drivers/net/ethernet/sun/niu.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /* niu.c: Neptune ethernet driver.
   3  *
   4  * Copyright (C) 2007, 2008 David S. Miller (davem@davemloft.net)
   5  */
   6
   7 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
   8
   9 #include <linux/module.h>
  10 #include <linux/init.h>
  11 #include <linux/interrupt.h>
  12 #include <linux/pci.h>
  13 #include <linux/dma-mapping.h>
  14 #include <linux/netdevice.h>
  15 #include <linux/ethtool.h>
  16 #include <linux/etherdevice.h>
  17 #include <linux/platform_device.h>
  18 #include <linux/delay.h>
  19 #include <linux/bitops.h>
  20 #include <linux/mii.h>
  21 #include <linux/if.h>
  22 #include <linux/if_ether.h>
  23 #include <linux/if_vlan.h>
  24 #include <linux/ip.h>
  25 #include <linux/in.h>
  26 #include <linux/ipv6.h>
  27 #include <linux/log2.h>
  28 #include <linux/jiffies.h>
  29 #include <linux/crc32.h>
  30 #include <linux/list.h>
  31 #include <linux/slab.h>
  32
  33 #include <linux/io.h>
  34 #include <linux/of_device.h>
  35
  36 #include "niu.h"
  37
  38 #define DRV_MODULE_NAME         "niu"
  39 #define DRV_MODULE_VERSION      "1.1"
  40 #define DRV_MODULE_RELDATE      "Apr 22, 2010"
  41
  42 static char version[] =
  43         DRV_MODULE_NAME ".c:v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n";
  44
  45 MODULE_AUTHOR("David S. Miller (davem@davemloft.net)");
  46 MODULE_DESCRIPTION("NIU ethernet driver");
  47 MODULE_LICENSE("GPL");
  48 MODULE_VERSION(DRV_MODULE_VERSION);
  49
  50 #ifndef readq
  51 static u64 readq(void __iomem *reg)
  52 {
  53         return ((u64) readl(reg)) | (((u64) readl(reg + 4UL)) << 32);
  54 }
  55
  56 static void writeq(u64 val, void __iomem *reg)
  57 {
  58         writel(val & 0xffffffff, reg);
  59         writel(val >> 32, reg + 0x4UL);
  60 }
  61 #endif
  62
  63 static const struct pci_device_id niu_pci_tbl[] = {
  64         {PCI_DEVICE(PCI_VENDOR_ID_SUN, 0xabcd)},
  65         {}
  66 };
  67
  68 MODULE_DEVICE_TABLE(pci, niu_pci_tbl);
  69
  70 #define NIU_TX_TIMEOUT                  (5 * HZ)
  71
  72 #define nr64(reg)               readq(np->regs + (reg))
  73 #define nw64(reg, val)          writeq((val), np->regs + (reg))
  74
  75 #define nr64_mac(reg)           readq(np->mac_regs + (reg))
  76 #define nw64_mac(reg, val)      writeq((val), np->mac_regs + (reg))
  77
  78 #define nr64_ipp(reg)           readq(np->regs + np->ipp_off + (reg))
  79 #define nw64_ipp(reg, val)      writeq((val), np->regs + np->ipp_off + (reg))
  80
  81 #define nr64_pcs(reg)           readq(np->regs + np->pcs_off + (reg))
  82 #define nw64_pcs(reg, val)      writeq((val), np->regs + np->pcs_off + (reg))
  83
  84 #define nr64_xpcs(reg)          readq(np->regs + np->xpcs_off + (reg))
  85 #define nw64_xpcs(reg, val)     writeq((val), np->regs + np->xpcs_off + (reg))
  86
  87 #define NIU_MSG_DEFAULT (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK)
  88
  89 static int niu_debug;
  90 static int debug = -1;
  91 module_param(debug, int, 0);
  92 MODULE_PARM_DESC(debug, "NIU debug level");
  93
  94 #define niu_lock_parent(np, flags) \
  95         spin_lock_irqsave(&np->parent->lock, flags)
  96 #define niu_unlock_parent(np, flags) \
  97         spin_unlock_irqrestore(&np->parent->lock, flags)
  98
  99 static int serdes_init_10g_serdes(struct niu *np);
 100
 101 static int __niu_wait_bits_clear_mac(struct niu *np, unsigned long reg,
 102                                      u64 bits, int limit, int delay)
 103 {
 104         while (--limit >= 0) {
 105                 u64 val = nr64_mac(reg);
 106
 107                 if (!(val & bits))
 108                         break;
 109                 udelay(delay);
 110         }
 111         if (limit < 0)
 112                 return -ENODEV;
 113         return 0;
 114 }
 115
 116 static int __niu_set_and_wait_clear_mac(struct niu *np, unsigned long reg,
 117                                         u64 bits, int limit, int delay,
 118                                         const char *reg_name)
 119 {
 120         int err;
 121
 122         nw64_mac(reg, bits);
 123         err = __niu_wait_bits_clear_mac(np, reg, bits, limit, delay);
 124         if (err)
 125                 netdev_err(np->dev, "bits (%llx) of register %s would not clear, val[%llx]\n",
 126                            (unsigned long long)bits, reg_name,
 127                            (unsigned long long)nr64_mac(reg));
 128         return err;
 129 }
 130
 131 #define niu_set_and_wait_clear_mac(NP, REG, BITS, LIMIT, DELAY, REG_NAME) \
 132 ({      BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
 133         __niu_set_and_wait_clear_mac(NP, REG, BITS, LIMIT, DELAY, REG_NAME); \
 134 })
 135
 136 static int __niu_wait_bits_clear_ipp(struct niu *np, unsigned long reg,
 137                                      u64 bits, int limit, int delay)
 138 {
 139         while (--limit >= 0) {
 140                 u64 val = nr64_ipp(reg);
 141
 142                 if (!(val & bits))
 143                         break;
 144                 udelay(delay);
 145         }
 146         if (limit < 0)
 147                 return -ENODEV;
 148         return 0;
 149 }
 150
 151 static int __niu_set_and_wait_clear_ipp(struct niu *np, unsigned long reg,
 152                                         u64 bits, int limit, int delay,
 153                                         const char *reg_name)
 154 {
 155         int err;
 156         u64 val;
 157
 158         val = nr64_ipp(reg);
 159         val |= bits;
 160         nw64_ipp(reg, val);
 161
 162         err = __niu_wait_bits_clear_ipp(np, reg, bits, limit, delay);
 163         if (err)
 164                 netdev_err(np->dev, "bits (%llx) of register %s would not clear, val[%llx]\n",
 165                            (unsigned long long)bits, reg_name,
 166                            (unsigned long long)nr64_ipp(reg));
 167         return err;
 168 }
 169
 170 #define niu_set_and_wait_clear_ipp(NP, REG, BITS, LIMIT, DELAY, REG_NAME) \
 171 ({      BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
 172         __niu_set_and_wait_clear_ipp(NP, REG, BITS, LIMIT, DELAY, REG_NAME); \
 173 })
 174
 175 static int __niu_wait_bits_clear(struct niu *np, unsigned long reg,
 176                                  u64 bits, int limit, int delay)
 177 {
 178         while (--limit >= 0) {
 179                 u64 val = nr64(reg);
 180
 181                 if (!(val & bits))
 182                         break;
 183                 udelay(delay);
 184         }
 185         if (limit < 0)
 186                 return -ENODEV;
 187         return 0;
 188 }
 189
 190 #define niu_wait_bits_clear(NP, REG, BITS, LIMIT, DELAY) \
 191 ({      BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
 192         __niu_wait_bits_clear(NP, REG, BITS, LIMIT, DELAY); \
 193 })
 194
 195 static int __niu_set_and_wait_clear(struct niu *np, unsigned long reg,
 196                                     u64 bits, int limit, int delay,
 197                                     const char *reg_name)
 198 {
 199         int err;
 200
 201         nw64(reg, bits);
 202         err = __niu_wait_bits_clear(np, reg, bits, limit, delay);
 203         if (err)
 204                 netdev_err(np->dev, "bits (%llx) of register %s would not clear, val[%llx]\n",
 205                            (unsigned long long)bits, reg_name,
 206                            (unsigned long long)nr64(reg));
 207         return err;
 208 }
 209
 210 #define niu_set_and_wait_clear(NP, REG, BITS, LIMIT, DELAY, REG_NAME) \
 211 ({      BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
 212         __niu_set_and_wait_clear(NP, REG, BITS, LIMIT, DELAY, REG_NAME); \
 213 })
 214
 215 static void niu_ldg_rearm(struct niu *np, struct niu_ldg *lp, int on)
 216 {
 217         u64 val = (u64) lp->timer;
 218
 219         if (on)
 220                 val |= LDG_IMGMT_ARM;
 221
 222         nw64(LDG_IMGMT(lp->ldg_num), val);
 223 }
 224
 225 static int niu_ldn_irq_enable(struct niu *np, int ldn, int on)
 226 {
 227         unsigned long mask_reg, bits;
 228         u64 val;
 229
 230         if (ldn < 0 || ldn > LDN_MAX)
 231                 return -EINVAL;
 232
 233         if (ldn < 64) {
 234                 mask_reg = LD_IM0(ldn);
 235                 bits = LD_IM0_MASK;
 236         } else {
 237                 mask_reg = LD_IM1(ldn - 64);
 238                 bits = LD_IM1_MASK;
 239         }
 240
 241         val = nr64(mask_reg);
 242         if (on)
 243                 val &= ~bits;
 244         else
 245                 val |= bits;
 246         nw64(mask_reg, val);
 247
 248         return 0;
 249 }
 250
 251 static int niu_enable_ldn_in_ldg(struct niu *np, struct niu_ldg *lp, int on)
 252 {
 253         struct niu_parent *parent = np->parent;
 254         int i;
 255
 256         for (i = 0; i <= LDN_MAX; i++) {
 257                 int err;
 258
 259                 if (parent->ldg_map[i] != lp->ldg_num)
 260                         continue;
 261
 262                 err = niu_ldn_irq_enable(np, i, on);
 263                 if (err)
 264                         return err;
 265         }
 266         return 0;
 267 }
 268
 269 static int niu_enable_interrupts(struct niu *np, int on)
 270 {
 271         int i;
 272
 273         for (i = 0; i < np->num_ldg; i++) {
 274                 struct niu_ldg *lp = &np->ldg[i];
 275                 int err;
 276
 277                 err = niu_enable_ldn_in_ldg(np, lp, on);
 278                 if (err)
 279                         return err;
 280         }
 281         for (i = 0; i < np->num_ldg; i++)
 282                 niu_ldg_rearm(np, &np->ldg[i], on);
 283
 284         return 0;
 285 }
 286
 287 static u32 phy_encode(u32 type, int port)
 288 {
 289         return type << (port * 2);
 290 }
 291
 292 static u32 phy_decode(u32 val, int port)
 293 {
 294         return (val >> (port * 2)) & PORT_TYPE_MASK;
 295 }
 296
 297 static int mdio_wait(struct niu *np)
 298 {
 299         int limit = 1000;
 300         u64 val;
 301
 302         while (--limit > 0) {
 303                 val = nr64(MIF_FRAME_OUTPUT);
 304                 if ((val >> MIF_FRAME_OUTPUT_TA_SHIFT) & 0x1)
 305                         return val & MIF_FRAME_OUTPUT_DATA;
 306
 307                 udelay(10);
 308         }
 309
 310         return -ENODEV;
 311 }
 312
 313 static int mdio_read(struct niu *np, int port, int dev, int reg)
 314 {
 315         int err;
 316
 317         nw64(MIF_FRAME_OUTPUT, MDIO_ADDR_OP(port, dev, reg));
 318         err = mdio_wait(np);
 319         if (err < 0)
 320                 return err;
 321
 322         nw64(MIF_FRAME_OUTPUT, MDIO_READ_OP(port, dev));
 323         return mdio_wait(np);
 324 }
 325
 326 static int mdio_write(struct niu *np, int port, int dev, int reg, int data)
 327 {
 328         int err;
 329
 330         nw64(MIF_FRAME_OUTPUT, MDIO_ADDR_OP(port, dev, reg));
 331         err = mdio_wait(np);
 332         if (err < 0)
 333                 return err;
 334
 335         nw64(MIF_FRAME_OUTPUT, MDIO_WRITE_OP(port, dev, data));
 336         err = mdio_wait(np);
 337         if (err < 0)
 338                 return err;
 339
 340         return 0;
 341 }
 342
 343 static int mii_read(struct niu *np, int port, int reg)
 344 {
 345         nw64(MIF_FRAME_OUTPUT, MII_READ_OP(port, reg));
 346         return mdio_wait(np);
 347 }
 348
 349 static int mii_write(struct niu *np, int port, int reg, int data)
 350 {
 351         int err;
 352
 353         nw64(MIF_FRAME_OUTPUT, MII_WRITE_OP(port, reg, data));
 354         err = mdio_wait(np);
 355         if (err < 0)
 356                 return err;
 357
 358         return 0;
 359 }
 360
 361 static int esr2_set_tx_cfg(struct niu *np, unsigned long channel, u32 val)
 362 {
 363         int err;
 364
 365         err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
 366                          ESR2_TI_PLL_TX_CFG_L(channel),
 367                          val & 0xffff);
 368         if (!err)
 369                 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
 370                                  ESR2_TI_PLL_TX_CFG_H(channel),
 371                                  val >> 16);
 372         return err;
 373 }
 374
 375 static int esr2_set_rx_cfg(struct niu *np, unsigned long channel, u32 val)
 376 {
 377         int err;
 378
 379         err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
 380                          ESR2_TI_PLL_RX_CFG_L(channel),
 381                          val & 0xffff);
 382         if (!err)
 383                 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
 384                                  ESR2_TI_PLL_RX_CFG_H(channel),
 385                                  val >> 16);
 386         return err;
 387 }
 388
 389 /* Mode is always 10G fiber.  */
 390 static int serdes_init_niu_10g_fiber(struct niu *np)
 391 {
 392         struct niu_link_config *lp = &np->link_config;
 393         u32 tx_cfg, rx_cfg;
 394         unsigned long i;
 395
 396         tx_cfg = (PLL_TX_CFG_ENTX | PLL_TX_CFG_SWING_1375MV);
 397         rx_cfg = (PLL_RX_CFG_ENRX | PLL_RX_CFG_TERM_0P8VDDT |
 398                   PLL_RX_CFG_ALIGN_ENA | PLL_RX_CFG_LOS_LTHRESH |
 399                   PLL_RX_CFG_EQ_LP_ADAPTIVE);
 400
 401         if (lp->loopback_mode == LOOPBACK_PHY) {
 402                 u16 test_cfg = PLL_TEST_CFG_LOOPBACK_CML_DIS;
 403
 404                 mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
 405                            ESR2_TI_PLL_TEST_CFG_L, test_cfg);
 406
 407                 tx_cfg |= PLL_TX_CFG_ENTEST;
 408                 rx_cfg |= PLL_RX_CFG_ENTEST;
 409         }
 410
 411         /* Initialize all 4 lanes of the SERDES.  */
 412         for (i = 0; i < 4; i++) {
 413                 int err = esr2_set_tx_cfg(np, i, tx_cfg);
 414                 if (err)
 415                         return err;
 416         }
 417
 418         for (i = 0; i < 4; i++) {
 419                 int err = esr2_set_rx_cfg(np, i, rx_cfg);
 420                 if (err)
 421                         return err;
 422         }
 423
 424         return 0;
 425 }
 426
 427 static int serdes_init_niu_1g_serdes(struct niu *np)
 428 {
 429         struct niu_link_config *lp = &np->link_config;
 430         u16 pll_cfg, pll_sts;
 431         int max_retry = 100;
 432         u64 sig, mask, val;
 433         u32 tx_cfg, rx_cfg;
 434         unsigned long i;
 435         int err;
 436
 437         tx_cfg = (PLL_TX_CFG_ENTX | PLL_TX_CFG_SWING_1375MV |
 438                   PLL_TX_CFG_RATE_HALF);
 439         rx_cfg = (PLL_RX_CFG_ENRX | PLL_RX_CFG_TERM_0P8VDDT |
 440                   PLL_RX_CFG_ALIGN_ENA | PLL_RX_CFG_LOS_LTHRESH |
 441                   PLL_RX_CFG_RATE_HALF);
 442
 443         if (np->port == 0)
 444                 rx_cfg |= PLL_RX_CFG_EQ_LP_ADAPTIVE;
 445
 446         if (lp->loopback_mode == LOOPBACK_PHY) {
 447                 u16 test_cfg = PLL_TEST_CFG_LOOPBACK_CML_DIS;
 448
 449                 mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
 450                            ESR2_TI_PLL_TEST_CFG_L, test_cfg);
 451
 452                 tx_cfg |= PLL_TX_CFG_ENTEST;
 453                 rx_cfg |= PLL_RX_CFG_ENTEST;
 454         }
 455
 456         /* Initialize PLL for 1G */
 457         pll_cfg = (PLL_CFG_ENPLL | PLL_CFG_MPY_8X);
 458
 459         err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
 460                          ESR2_TI_PLL_CFG_L, pll_cfg);
 461         if (err) {
 462                 netdev_err(np->dev, "NIU Port %d %s() mdio write to ESR2_TI_PLL_CFG_L failed\n",
 463                            np->port, __func__);
 464                 return err;
 465         }
 466
 467         pll_sts = PLL_CFG_ENPLL;
 468
 469         err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
 470                          ESR2_TI_PLL_STS_L, pll_sts);
 471         if (err) {
 472                 netdev_err(np->dev, "NIU Port %d %s() mdio write to ESR2_TI_PLL_STS_L failed\n",
 473                            np->port, __func__);
 474                 return err;
 475         }
 476
 477         udelay(200);
 478
 479         /* Initialize all 4 lanes of the SERDES.  */
 480         for (i = 0; i < 4; i++) {
 481                 err = esr2_set_tx_cfg(np, i, tx_cfg);
 482                 if (err)
 483                         return err;
 484         }
 485
 486         for (i = 0; i < 4; i++) {
 487                 err = esr2_set_rx_cfg(np, i, rx_cfg);
 488                 if (err)
 489                         return err;
 490         }
 491
 492         switch (np->port) {
 493         case 0:
 494                 val = (ESR_INT_SRDY0_P0 | ESR_INT_DET0_P0);
 495                 mask = val;
 496                 break;
 497
 498         case 1:
 499                 val = (ESR_INT_SRDY0_P1 | ESR_INT_DET0_P1);
 500                 mask = val;
 501                 break;
 502
 503         default:
 504                 return -EINVAL;
 505         }
 506
 507         while (max_retry--) {
 508                 sig = nr64(ESR_INT_SIGNALS);
 509                 if ((sig & mask) == val)
 510                         break;
 511
 512                 mdelay(500);
 513         }
 514
 515         if ((sig & mask) != val) {
 516                 netdev_err(np->dev, "Port %u signal bits [%08x] are not [%08x]\n",
 517                            np->port, (int)(sig & mask), (int)val);
 518                 return -ENODEV;
 519         }
 520
 521         return 0;
 522 }
 523
 524 static int serdes_init_niu_10g_serdes(struct niu *np)
 525 {
 526         struct niu_link_config *lp = &np->link_config;
 527         u32 tx_cfg, rx_cfg, pll_cfg, pll_sts;
 528         int max_retry = 100;
 529         u64 sig, mask, val;
 530         unsigned long i;
 531         int err;
 532
 533         tx_cfg = (PLL_TX_CFG_ENTX | PLL_TX_CFG_SWING_1375MV);
 534         rx_cfg = (PLL_RX_CFG_ENRX | PLL_RX_CFG_TERM_0P8VDDT |
 535                   PLL_RX_CFG_ALIGN_ENA | PLL_RX_CFG_LOS_LTHRESH |
 536                   PLL_RX_CFG_EQ_LP_ADAPTIVE);
 537
 538         if (lp->loopback_mode == LOOPBACK_PHY) {
 539                 u16 test_cfg = PLL_TEST_CFG_LOOPBACK_CML_DIS;
 540
 541                 mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
 542                            ESR2_TI_PLL_TEST_CFG_L, test_cfg);
 543
 544                 tx_cfg |= PLL_TX_CFG_ENTEST;
 545                 rx_cfg |= PLL_RX_CFG_ENTEST;
 546         }
 547
 548         /* Initialize PLL for 10G */
 549         pll_cfg = (PLL_CFG_ENPLL | PLL_CFG_MPY_10X);
 550
 551         err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
 552                          ESR2_TI_PLL_CFG_L, pll_cfg & 0xffff);
 553         if (err) {
 554                 netdev_err(np->dev, "NIU Port %d %s() mdio write to ESR2_TI_PLL_CFG_L failed\n",
 555                            np->port, __func__);
 556                 return err;
 557         }
 558
 559         pll_sts = PLL_CFG_ENPLL;
 560
 561         err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
 562                          ESR2_TI_PLL_STS_L, pll_sts & 0xffff);
 563         if (err) {
 564                 netdev_err(np->dev, "NIU Port %d %s() mdio write to ESR2_TI_PLL_STS_L failed\n",
 565                            np->port, __func__);
 566                 return err;
 567         }
 568
 569         udelay(200);
 570
 571         /* Initialize all 4 lanes of the SERDES.  */
 572         for (i = 0; i < 4; i++) {
 573                 err = esr2_set_tx_cfg(np, i, tx_cfg);
 574                 if (err)
 575                         return err;
 576         }
 577
 578         for (i = 0; i < 4; i++) {
 579                 err = esr2_set_rx_cfg(np, i, rx_cfg);
 580                 if (err)
 581                         return err;
 582         }
 583
 584         /* check if serdes is ready */
 585
 586         switch (np->port) {
 587         case 0:
 588                 mask = ESR_INT_SIGNALS_P0_BITS;
 589                 val = (ESR_INT_SRDY0_P0 |
 590                        ESR_INT_DET0_P0 |
 591                        ESR_INT_XSRDY_P0 |
 592                        ESR_INT_XDP_P0_CH3 |
 593                        ESR_INT_XDP_P0_CH2 |
 594                        ESR_INT_XDP_P0_CH1 |
 595                        ESR_INT_XDP_P0_CH0);
 596                 break;
 597
 598         case 1:
 599                 mask = ESR_INT_SIGNALS_P1_BITS;
 600                 val = (ESR_INT_SRDY0_P1 |
 601                        ESR_INT_DET0_P1 |
 602                        ESR_INT_XSRDY_P1 |
 603                        ESR_INT_XDP_P1_CH3 |
 604                        ESR_INT_XDP_P1_CH2 |
 605                        ESR_INT_XDP_P1_CH1 |
 606                        ESR_INT_XDP_P1_CH0);
 607                 break;
 608
 609         default:
 610                 return -EINVAL;
 611         }
 612
 613         while (max_retry--) {
 614                 sig = nr64(ESR_INT_SIGNALS);
 615                 if ((sig & mask) == val)
 616                         break;
 617
 618                 mdelay(500);
 619         }
 620
 621         if ((sig & mask) != val) {
 622                 pr_info("NIU Port %u signal bits [%08x] are not [%08x] for 10G...trying 1G\n",
 623                         np->port, (int)(sig & mask), (int)val);
 624
 625                 /* 10G failed, try initializing at 1G */
 626                 err = serdes_init_niu_1g_serdes(np);
 627                 if (!err) {
 628                         np->flags &= ~NIU_FLAGS_10G;
 629                         np->mac_xcvr = MAC_XCVR_PCS;
 630                 }  else {
 631                         netdev_err(np->dev, "Port %u 10G/1G SERDES Link Failed\n",
 632                                    np->port);
 633                         return -ENODEV;
 634                 }
 635         }
 636         return 0;
 637 }
 638
 639 static int esr_read_rxtx_ctrl(struct niu *np, unsigned long chan, u32 *val)
 640 {
 641         int err;
 642
 643         err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR, ESR_RXTX_CTRL_L(chan));
 644         if (err >= 0) {
 645                 *val = (err & 0xffff);
 646                 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
 647                                 ESR_RXTX_CTRL_H(chan));
 648                 if (err >= 0)
 649                         *val |= ((err & 0xffff) << 16);
 650                 err = 0;
 651         }
 652         return err;
 653 }
 654
 655 static int esr_read_glue0(struct niu *np, unsigned long chan, u32 *val)
 656 {
 657         int err;
 658
 659         err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
 660                         ESR_GLUE_CTRL0_L(chan));
 661         if (err >= 0) {
 662                 *val = (err & 0xffff);
 663                 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
 664                                 ESR_GLUE_CTRL0_H(chan));
 665                 if (err >= 0) {
 666                         *val |= ((err & 0xffff) << 16);
 667                         err = 0;
 668                 }
 669         }
 670         return err;
 671 }
 672
 673 static int esr_read_reset(struct niu *np, u32 *val)
 674 {
 675         int err;
 676
 677         err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
 678                         ESR_RXTX_RESET_CTRL_L);
 679         if (err >= 0) {
 680                 *val = (err & 0xffff);
 681                 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
 682                                 ESR_RXTX_RESET_CTRL_H);
 683                 if (err >= 0) {
 684                         *val |= ((err & 0xffff) << 16);
 685                         err = 0;
 686                 }
 687         }
 688         return err;
 689 }
 690
 691 static int esr_write_rxtx_ctrl(struct niu *np, unsigned long chan, u32 val)
 692 {
 693         int err;
 694
 695         err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
 696                          ESR_RXTX_CTRL_L(chan), val & 0xffff);
 697         if (!err)
 698                 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
 699                                  ESR_RXTX_CTRL_H(chan), (val >> 16));
 700         return err;
 701 }
 702
 703 static int esr_write_glue0(struct niu *np, unsigned long chan, u32 val)
 704 {
 705         int err;
 706
 707         err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
 708                         ESR_GLUE_CTRL0_L(chan), val & 0xffff);
 709         if (!err)
 710                 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
 711                                  ESR_GLUE_CTRL0_H(chan), (val >> 16));
 712         return err;
 713 }
 714
 715 static int esr_reset(struct niu *np)
 716 {
 717         u32 reset;
 718         int err;
 719
 720         err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
 721                          ESR_RXTX_RESET_CTRL_L, 0x0000);
 722         if (err)
 723                 return err;
 724         err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
 725                          ESR_RXTX_RESET_CTRL_H, 0xffff);
 726         if (err)
 727                 return err;
 728         udelay(200);
 729
 730         err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
 731                          ESR_RXTX_RESET_CTRL_L, 0xffff);
 732         if (err)
 733                 return err;
 734         udelay(200);
 735
 736         err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
 737                          ESR_RXTX_RESET_CTRL_H, 0x0000);
 738         if (err)
 739                 return err;
 740         udelay(200);
 741
 742         err = esr_read_reset(np, &reset);
 743         if (err)
 744                 return err;
 745         if (reset != 0) {
 746                 netdev_err(np->dev, "Port %u ESR_RESET did not clear [%08x]\n",
 747                            np->port, reset);
 748                 return -ENODEV;
 749         }
 750
 751         return 0;
 752 }
 753
 754 static int serdes_init_10g(struct niu *np)
 755 {
 756         struct niu_link_config *lp = &np->link_config;
 757         unsigned long ctrl_reg, test_cfg_reg, i;
 758         u64 ctrl_val, test_cfg_val, sig, mask, val;
 759         int err;
 760
 761         switch (np->port) {
 762         case 0:
 763                 ctrl_reg = ENET_SERDES_0_CTRL_CFG;
 764                 test_cfg_reg = ENET_SERDES_0_TEST_CFG;
 765                 break;
 766         case 1:
 767                 ctrl_reg = ENET_SERDES_1_CTRL_CFG;
 768                 test_cfg_reg = ENET_SERDES_1_TEST_CFG;
 769                 break;
 770
 771         default:
 772                 return -EINVAL;
 773         }
 774         ctrl_val = (ENET_SERDES_CTRL_SDET_0 |
 775                     ENET_SERDES_CTRL_SDET_1 |
 776                     ENET_SERDES_CTRL_SDET_2 |
 777                     ENET_SERDES_CTRL_SDET_3 |
 778                     (0x5 << ENET_SERDES_CTRL_EMPH_0_SHIFT) |
 779                     (0x5 << ENET_SERDES_CTRL_EMPH_1_SHIFT) |
 780                     (0x5 << ENET_SERDES_CTRL_EMPH_2_SHIFT) |
 781                     (0x5 << ENET_SERDES_CTRL_EMPH_3_SHIFT) |
 782                     (0x1 << ENET_SERDES_CTRL_LADJ_0_SHIFT) |
 783                     (0x1 << ENET_SERDES_CTRL_LADJ_1_SHIFT) |
 784                     (0x1 << ENET_SERDES_CTRL_LADJ_2_SHIFT) |
 785                     (0x1 << ENET_SERDES_CTRL_LADJ_3_SHIFT));
 786         test_cfg_val = 0;
 787
 788         if (lp->loopback_mode == LOOPBACK_PHY) {
 789                 test_cfg_val |= ((ENET_TEST_MD_PAD_LOOPBACK <<
 790                                   ENET_SERDES_TEST_MD_0_SHIFT) |
 791                                  (ENET_TEST_MD_PAD_LOOPBACK <<
 792                                   ENET_SERDES_TEST_MD_1_SHIFT) |
 793                                  (ENET_TEST_MD_PAD_LOOPBACK <<
 794                                   ENET_SERDES_TEST_MD_2_SHIFT) |
 795                                  (ENET_TEST_MD_PAD_LOOPBACK <<
 796                                   ENET_SERDES_TEST_MD_3_SHIFT));
 797         }
 798
 799         nw64(ctrl_reg, ctrl_val);
 800         nw64(test_cfg_reg, test_cfg_val);
 801
 802         /* Initialize all 4 lanes of the SERDES.  */
 803         for (i = 0; i < 4; i++) {
 804                 u32 rxtx_ctrl, glue0;
 805
 806                 err = esr_read_rxtx_ctrl(np, i, &rxtx_ctrl);
 807                 if (err)
 808                         return err;
 809                 err = esr_read_glue0(np, i, &glue0);
 810                 if (err)
 811                         return err;
 812
 813                 rxtx_ctrl &= ~(ESR_RXTX_CTRL_VMUXLO);
 814                 rxtx_ctrl |= (ESR_RXTX_CTRL_ENSTRETCH |
 815                               (2 << ESR_RXTX_CTRL_VMUXLO_SHIFT));
 816
 817                 glue0 &= ~(ESR_GLUE_CTRL0_SRATE |
 818                            ESR_GLUE_CTRL0_THCNT |
 819                            ESR_GLUE_CTRL0_BLTIME);
 820                 glue0 |= (ESR_GLUE_CTRL0_RXLOSENAB |
 821                           (0xf << ESR_GLUE_CTRL0_SRATE_SHIFT) |
 822                           (0xff << ESR_GLUE_CTRL0_THCNT_SHIFT) |
 823                           (BLTIME_300_CYCLES <<
 824                            ESR_GLUE_CTRL0_BLTIME_SHIFT));
 825
 826                 err = esr_write_rxtx_ctrl(np, i, rxtx_ctrl);
 827                 if (err)
 828                         return err;
 829                 err = esr_write_glue0(np, i, glue0);
 830                 if (err)
 831                         return err;
 832         }
 833
 834         err = esr_reset(np);
 835         if (err)
 836                 return err;
 837
 838         sig = nr64(ESR_INT_SIGNALS);
 839         switch (np->port) {
 840         case 0:
 841                 mask = ESR_INT_SIGNALS_P0_BITS;
 842                 val = (ESR_INT_SRDY0_P0 |
 843                        ESR_INT_DET0_P0 |
 844                        ESR_INT_XSRDY_P0 |
 845                        ESR_INT_XDP_P0_CH3 |
 846                        ESR_INT_XDP_P0_CH2 |
 847                        ESR_INT_XDP_P0_CH1 |
 848                        ESR_INT_XDP_P0_CH0);
 849                 break;
 850
 851         case 1:
 852                 mask = ESR_INT_SIGNALS_P1_BITS;
 853                 val = (ESR_INT_SRDY0_P1 |
 854                        ESR_INT_DET0_P1 |
 855                        ESR_INT_XSRDY_P1 |
 856                        ESR_INT_XDP_P1_CH3 |
 857                        ESR_INT_XDP_P1_CH2 |
 858                        ESR_INT_XDP_P1_CH1 |
 859                        ESR_INT_XDP_P1_CH0);
 860                 break;
 861
 862         default:
 863                 return -EINVAL;
 864         }
 865
 866         if ((sig & mask) != val) {
 867                 if (np->flags & NIU_FLAGS_HOTPLUG_PHY) {
 868                         np->flags &= ~NIU_FLAGS_HOTPLUG_PHY_PRESENT;
 869                         return 0;
 870                 }
 871                 netdev_err(np->dev, "Port %u signal bits [%08x] are not [%08x]\n",
 872                            np->port, (int)(sig & mask), (int)val);
 873                 return -ENODEV;
 874         }
 875         if (np->flags & NIU_FLAGS_HOTPLUG_PHY)
 876                 np->flags |= NIU_FLAGS_HOTPLUG_PHY_PRESENT;
 877         return 0;
 878 }
 879
 880 static int serdes_init_1g(struct niu *np)
 881 {
 882         u64 val;
 883
 884         val = nr64(ENET_SERDES_1_PLL_CFG);
 885         val &= ~ENET_SERDES_PLL_FBDIV2;
 886         switch (np->port) {
 887         case 0:
 888                 val |= ENET_SERDES_PLL_HRATE0;
 889                 break;
 890         case 1:
 891                 val |= ENET_SERDES_PLL_HRATE1;
 892                 break;
 893         case 2:
 894                 val |= ENET_SERDES_PLL_HRATE2;
 895                 break;
 896         case 3:
 897                 val |= ENET_SERDES_PLL_HRATE3;
 898                 break;
 899         default:
 900                 return -EINVAL;
 901         }
 902         nw64(ENET_SERDES_1_PLL_CFG, val);
 903
 904         return 0;
 905 }
 906
 907 static int serdes_init_1g_serdes(struct niu *np)
 908 {
 909         struct niu_link_config *lp = &np->link_config;
 910         unsigned long ctrl_reg, test_cfg_reg, pll_cfg, i;
 911         u64 ctrl_val, test_cfg_val, sig, mask, val;
 912         int err;
 913         u64 reset_val, val_rd;
 914
 915         val = ENET_SERDES_PLL_HRATE0 | ENET_SERDES_PLL_HRATE1 |
 916                 ENET_SERDES_PLL_HRATE2 | ENET_SERDES_PLL_HRATE3 |
 917                 ENET_SERDES_PLL_FBDIV0;
 918         switch (np->port) {
 919         case 0:
 920                 reset_val =  ENET_SERDES_RESET_0;
 921                 ctrl_reg = ENET_SERDES_0_CTRL_CFG;
 922                 test_cfg_reg = ENET_SERDES_0_TEST_CFG;
 923                 pll_cfg = ENET_SERDES_0_PLL_CFG;
 924                 break;
 925         case 1:
 926                 reset_val =  ENET_SERDES_RESET_1;
 927                 ctrl_reg = ENET_SERDES_1_CTRL_CFG;
 928                 test_cfg_reg = ENET_SERDES_1_TEST_CFG;
 929                 pll_cfg = ENET_SERDES_1_PLL_CFG;
 930                 break;
 931
 932         default:
 933                 return -EINVAL;
 934         }
 935         ctrl_val = (ENET_SERDES_CTRL_SDET_0 |
 936                     ENET_SERDES_CTRL_SDET_1 |
 937                     ENET_SERDES_CTRL_SDET_2 |
 938                     ENET_SERDES_CTRL_SDET_3 |
 939                     (0x5 << ENET_SERDES_CTRL_EMPH_0_SHIFT) |
 940                     (0x5 << ENET_SERDES_CTRL_EMPH_1_SHIFT) |
 941                     (0x5 << ENET_SERDES_CTRL_EMPH_2_SHIFT) |
 942                     (0x5 << ENET_SERDES_CTRL_EMPH_3_SHIFT) |
 943                     (0x1 << ENET_SERDES_CTRL_LADJ_0_SHIFT) |
 944                     (0x1 << ENET_SERDES_CTRL_LADJ_1_SHIFT) |
 945                     (0x1 << ENET_SERDES_CTRL_LADJ_2_SHIFT) |
 946                     (0x1 << ENET_SERDES_CTRL_LADJ_3_SHIFT));
 947         test_cfg_val = 0;
 948
 949         if (lp->loopback_mode == LOOPBACK_PHY) {
 950                 test_cfg_val |= ((ENET_TEST_MD_PAD_LOOPBACK <<
 951                                   ENET_SERDES_TEST_MD_0_SHIFT) |
 952                                  (ENET_TEST_MD_PAD_LOOPBACK <<
 953                                   ENET_SERDES_TEST_MD_1_SHIFT) |
 954                                  (ENET_TEST_MD_PAD_LOOPBACK <<
 955                                   ENET_SERDES_TEST_MD_2_SHIFT) |
 956                                  (ENET_TEST_MD_PAD_LOOPBACK <<
 957                                   ENET_SERDES_TEST_MD_3_SHIFT));
 958         }
 959
 960         nw64(ENET_SERDES_RESET, reset_val);
 961         mdelay(20);
 962         val_rd = nr64(ENET_SERDES_RESET);
 963         val_rd &= ~reset_val;
 964         nw64(pll_cfg, val);
 965         nw64(ctrl_reg, ctrl_val);
 966         nw64(test_cfg_reg, test_cfg_val);
 967         nw64(ENET_SERDES_RESET, val_rd);
 968         mdelay(2000);
 969
 970         /* Initialize all 4 lanes of the SERDES.  */
 971         for (i = 0; i < 4; i++) {
 972                 u32 rxtx_ctrl, glue0;
 973
 974                 err = esr_read_rxtx_ctrl(np, i, &rxtx_ctrl);
 975                 if (err)
 976                         return err;
 977                 err = esr_read_glue0(np, i, &glue0);
 978                 if (err)
 979                         return err;
 980
 981                 rxtx_ctrl &= ~(ESR_RXTX_CTRL_VMUXLO);
 982                 rxtx_ctrl |= (ESR_RXTX_CTRL_ENSTRETCH |
 983                               (2 << ESR_RXTX_CTRL_VMUXLO_SHIFT));
 984
 985                 glue0 &= ~(ESR_GLUE_CTRL0_SRATE |
 986                            ESR_GLUE_CTRL0_THCNT |
 987                            ESR_GLUE_CTRL0_BLTIME);
 988                 glue0 |= (ESR_GLUE_CTRL0_RXLOSENAB |
 989                           (0xf << ESR_GLUE_CTRL0_SRATE_SHIFT) |
 990                           (0xff << ESR_GLUE_CTRL0_THCNT_SHIFT) |
 991                           (BLTIME_300_CYCLES <<
 992                            ESR_GLUE_CTRL0_BLTIME_SHIFT));
 993
 994                 err = esr_write_rxtx_ctrl(np, i, rxtx_ctrl);
 995                 if (err)
 996                         return err;
 997                 err = esr_write_glue0(np, i, glue0);
 998                 if (err)
 999                         return err;
1000         }
1001
1002
1003         sig = nr64(ESR_INT_SIGNALS);
1004         switch (np->port) {
1005         case 0:
1006                 val = (ESR_INT_SRDY0_P0 | ESR_INT_DET0_P0);
1007                 mask = val;
1008                 break;
1009
1010         case 1:
1011                 val = (ESR_INT_SRDY0_P1 | ESR_INT_DET0_P1);
1012                 mask = val;
1013                 break;
1014
1015         default:
1016                 return -EINVAL;
1017         }
1018
1019         if ((sig & mask) != val) {
1020                 netdev_err(np->dev, "Port %u signal bits [%08x] are not [%08x]\n",
1021                            np->port, (int)(sig & mask), (int)val);
1022                 return -ENODEV;
1023         }
1024
1025         return 0;
1026 }
1027
1028 static int link_status_1g_serdes(struct niu *np, int *link_up_p)
1029 {
1030         struct niu_link_config *lp = &np->link_config;
1031         int link_up;
1032         u64 val;
1033         u16 current_speed;
1034         unsigned long flags;
1035         u8 current_duplex;
1036
1037         link_up = 0;
1038         current_speed = SPEED_INVALID;
1039         current_duplex = DUPLEX_INVALID;
1040
1041         spin_lock_irqsave(&np->lock, flags);
1042
1043         val = nr64_pcs(PCS_MII_STAT);
1044
1045         if (val & PCS_MII_STAT_LINK_STATUS) {
1046                 link_up = 1;
1047                 current_speed = SPEED_1000;
1048                 current_duplex = DUPLEX_FULL;
1049         }
1050
1051         lp->active_speed = current_speed;
1052         lp->active_duplex = current_duplex;
1053         spin_unlock_irqrestore(&np->lock, flags);
1054
1055         *link_up_p = link_up;
1056         return 0;
1057 }
1058
1059 static int link_status_10g_serdes(struct niu *np, int *link_up_p)
1060 {
1061         unsigned long flags;
1062         struct niu_link_config *lp = &np->link_config;
1063         int link_up = 0;
1064         int link_ok = 1;
1065         u64 val, val2;
1066         u16 current_speed;
1067         u8 current_duplex;
1068
1069         if (!(np->flags & NIU_FLAGS_10G))
1070                 return link_status_1g_serdes(np, link_up_p);
1071
1072         current_speed = SPEED_INVALID;
1073         current_duplex = DUPLEX_INVALID;
1074         spin_lock_irqsave(&np->lock, flags);
1075
1076         val = nr64_xpcs(XPCS_STATUS(0));
1077         val2 = nr64_mac(XMAC_INTER2);
1078         if (val2 & 0x01000000)
1079                 link_ok = 0;
1080
1081         if ((val & 0x1000ULL) && link_ok) {
1082                 link_up = 1;
1083                 current_speed = SPEED_10000;
1084                 current_duplex = DUPLEX_FULL;
1085         }
1086         lp->active_speed = current_speed;
1087         lp->active_duplex = current_duplex;
1088         spin_unlock_irqrestore(&np->lock, flags);
1089         *link_up_p = link_up;
1090         return 0;
1091 }
1092
1093 static int link_status_mii(struct niu *np, int *link_up_p)
1094 {
1095         struct niu_link_config *lp = &np->link_config;
1096         int err;
1097         int bmsr, advert, ctrl1000, stat1000, lpa, bmcr, estatus;
1098         int supported, advertising, active_speed, active_duplex;
1099
1100         err = mii_read(np, np->phy_addr, MII_BMCR);
1101         if (unlikely(err < 0))
1102                 return err;
1103         bmcr = err;
1104
1105         err = mii_read(np, np->phy_addr, MII_BMSR);
1106         if (unlikely(err < 0))
1107                 return err;
1108         bmsr = err;
1109
1110         err = mii_read(np, np->phy_addr, MII_ADVERTISE);
1111         if (unlikely(err < 0))
1112                 return err;
1113         advert = err;
1114
1115         err = mii_read(np, np->phy_addr, MII_LPA);
1116         if (unlikely(err < 0))
1117                 return err;
1118         lpa = err;
1119
1120         if (likely(bmsr & BMSR_ESTATEN)) {
1121                 err = mii_read(np, np->phy_addr, MII_ESTATUS);
1122                 if (unlikely(err < 0))
1123                         return err;
1124                 estatus = err;
1125
1126                 err = mii_read(np, np->phy_addr, MII_CTRL1000);
1127                 if (unlikely(err < 0))
1128                         return err;
1129                 ctrl1000 = err;
1130
1131                 err = mii_read(np, np->phy_addr, MII_STAT1000);
1132                 if (unlikely(err < 0))
1133                         return err;
1134                 stat1000 = err;
1135         } else
1136                 estatus = ctrl1000 = stat1000 = 0;
1137
1138         supported = 0;
1139         if (bmsr & BMSR_ANEGCAPABLE)
1140                 supported |= SUPPORTED_Autoneg;
1141         if (bmsr & BMSR_10HALF)
1142                 supported |= SUPPORTED_10baseT_Half;
1143         if (bmsr & BMSR_10FULL)
1144                 supported |= SUPPORTED_10baseT_Full;
1145         if (bmsr & BMSR_100HALF)
1146                 supported |= SUPPORTED_100baseT_Half;
1147         if (bmsr & BMSR_100FULL)
1148                 supported |= SUPPORTED_100baseT_Full;
1149         if (estatus & ESTATUS_1000_THALF)
1150                 supported |= SUPPORTED_1000baseT_Half;
1151         if (estatus & ESTATUS_1000_TFULL)
1152                 supported |= SUPPORTED_1000baseT_Full;
1153         lp->supported = supported;
1154
1155         advertising = mii_adv_to_ethtool_adv_t(advert);
1156         advertising |= mii_ctrl1000_to_ethtool_adv_t(ctrl1000);
1157
1158         if (bmcr & BMCR_ANENABLE) {
1159                 int neg, neg1000;
1160
1161                 lp->active_autoneg = 1;
1162                 advertising |= ADVERTISED_Autoneg;
1163
1164                 neg = advert & lpa;
1165                 neg1000 = (ctrl1000 << 2) & stat1000;
1166
1167                 if (neg1000 & (LPA_1000FULL | LPA_1000HALF))
1168                         active_speed = SPEED_1000;
1169                 else if (neg & LPA_100)
1170                         active_speed = SPEED_100;
1171                 else if (neg & (LPA_10HALF | LPA_10FULL))
1172                         active_speed = SPEED_10;
1173                 else
1174                         active_speed = SPEED_INVALID;
1175
1176                 if ((neg1000 & LPA_1000FULL) || (neg & LPA_DUPLEX))
1177                         active_duplex = DUPLEX_FULL;
1178                 else if (active_speed != SPEED_INVALID)
1179                         active_duplex = DUPLEX_HALF;
1180                 else
1181                         active_duplex = DUPLEX_INVALID;
1182         } else {
1183                 lp->active_autoneg = 0;
1184
1185                 if ((bmcr & BMCR_SPEED1000) && !(bmcr & BMCR_SPEED100))
1186                         active_speed = SPEED_1000;
1187                 else if (bmcr & BMCR_SPEED100)
1188                         active_speed = SPEED_100;
1189                 else
1190                         active_speed = SPEED_10;
1191
1192                 if (bmcr & BMCR_FULLDPLX)
1193                         active_duplex = DUPLEX_FULL;
1194                 else
1195                         active_duplex = DUPLEX_HALF;
1196         }
1197
1198         lp->active_advertising = advertising;
1199         lp->active_speed = active_speed;
1200         lp->active_duplex = active_duplex;
1201         *link_up_p = !!(bmsr & BMSR_LSTATUS);
1202
1203         return 0;
1204 }
1205
1206 static int link_status_1g_rgmii(struct niu *np, int *link_up_p)
1207 {
1208         struct niu_link_config *lp = &np->link_config;
1209         u16 current_speed, bmsr;
1210         unsigned long flags;
1211         u8 current_duplex;
1212         int err, link_up;
1213
1214         link_up = 0;
1215         current_speed = SPEED_INVALID;
1216         current_duplex = DUPLEX_INVALID;
1217
1218         spin_lock_irqsave(&np->lock, flags);
1219
1220         err = mii_read(np, np->phy_addr, MII_BMSR);
1221         if (err < 0)
1222                 goto out;
1223
1224         bmsr = err;
1225         if (bmsr & BMSR_LSTATUS) {
1226                 link_up = 1;
1227                 current_speed = SPEED_1000;
1228                 current_duplex = DUPLEX_FULL;
1229         }
1230         lp->active_speed = current_speed;
1231         lp->active_duplex = current_duplex;
1232         err = 0;
1233
1234 out:
1235         spin_unlock_irqrestore(&np->lock, flags);
1236
1237         *link_up_p = link_up;
1238         return err;
1239 }
1240
1241 static int link_status_1g(struct niu *np, int *link_up_p)
1242 {
1243         struct niu_link_config *lp = &np->link_config;
1244         unsigned long flags;
1245         int err;
1246
1247         spin_lock_irqsave(&np->lock, flags);
1248
1249         err = link_status_mii(np, link_up_p);
1250         lp->supported |= SUPPORTED_TP;
1251         lp->active_advertising |= ADVERTISED_TP;
1252
1253         spin_unlock_irqrestore(&np->lock, flags);
1254         return err;
1255 }
1256
1257 static int bcm8704_reset(struct niu *np)
1258 {
1259         int err, limit;
1260
1261         err = mdio_read(np, np->phy_addr,
1262                         BCM8704_PHYXS_DEV_ADDR, MII_BMCR);
1263         if (err < 0 || err == 0xffff)
1264                 return err;
1265         err |= BMCR_RESET;
1266         err = mdio_write(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
1267                          MII_BMCR, err);
1268         if (err)
1269                 return err;
1270
1271         limit = 1000;
1272         while (--limit >= 0) {
1273                 err = mdio_read(np, np->phy_addr,
1274                                 BCM8704_PHYXS_DEV_ADDR, MII_BMCR);
1275                 if (err < 0)
1276                         return err;
1277                 if (!(err & BMCR_RESET))
1278                         break;
1279         }
1280         if (limit < 0) {
1281                 netdev_err(np->dev, "Port %u PHY will not reset (bmcr=%04x)\n",
1282                            np->port, (err & 0xffff));
1283                 return -ENODEV;
1284         }
1285         return 0;
1286 }
1287
1288 /* When written, certain PHY registers need to be read back twice
1289  * in order for the bits to settle properly.
1290  */
1291 static int bcm8704_user_dev3_readback(struct niu *np, int reg)
1292 {
1293         int err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, reg);
1294         if (err < 0)
1295                 return err;
1296         err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, reg);
1297         if (err < 0)
1298                 return err;
1299         return 0;
1300 }
1301
1302 static int bcm8706_init_user_dev3(struct niu *np)
1303 {
1304         int err;
1305
1306
1307         err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1308                         BCM8704_USER_OPT_DIGITAL_CTRL);
1309         if (err < 0)
1310                 return err;
1311         err &= ~USER_ODIG_CTRL_GPIOS;
1312         err |= (0x3 << USER_ODIG_CTRL_GPIOS_SHIFT);
1313         err |=  USER_ODIG_CTRL_RESV2;
1314         err = mdio_write(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1315                          BCM8704_USER_OPT_DIGITAL_CTRL, err);
1316         if (err)
1317                 return err;
1318
1319         mdelay(1000);
1320
1321         return 0;
1322 }
1323
1324 static int bcm8704_init_user_dev3(struct niu *np)
1325 {
1326         int err;
1327
1328         err = mdio_write(np, np->phy_addr,
1329                          BCM8704_USER_DEV3_ADDR, BCM8704_USER_CONTROL,
1330                          (USER_CONTROL_OPTXRST_LVL |
1331                           USER_CONTROL_OPBIASFLT_LVL |
1332                           USER_CONTROL_OBTMPFLT_LVL |
1333                           USER_CONTROL_OPPRFLT_LVL |
1334                           USER_CONTROL_OPTXFLT_LVL |
1335                           USER_CONTROL_OPRXLOS_LVL |
1336                           USER_CONTROL_OPRXFLT_LVL |
1337                           USER_CONTROL_OPTXON_LVL |
1338                           (0x3f << USER_CONTROL_RES1_SHIFT)));
1339         if (err)
1340                 return err;
1341
1342         err = mdio_write(np, np->phy_addr,
1343                          BCM8704_USER_DEV3_ADDR, BCM8704_USER_PMD_TX_CONTROL,
1344                          (USER_PMD_TX_CTL_XFP_CLKEN |
1345                           (1 << USER_PMD_TX_CTL_TX_DAC_TXD_SH) |
1346                           (2 << USER_PMD_TX_CTL_TX_DAC_TXCK_SH) |
1347                           USER_PMD_TX_CTL_TSCK_LPWREN));
1348         if (err)
1349                 return err;
1350
1351         err = bcm8704_user_dev3_readback(np, BCM8704_USER_CONTROL);
1352         if (err)
1353                 return err;
1354         err = bcm8704_user_dev3_readback(np, BCM8704_USER_PMD_TX_CONTROL);
1355         if (err)
1356                 return err;
1357
1358         err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1359                         BCM8704_USER_OPT_DIGITAL_CTRL);
1360         if (err < 0)
1361                 return err;
1362         err &= ~USER_ODIG_CTRL_GPIOS;
1363         err |= (0x3 << USER_ODIG_CTRL_GPIOS_SHIFT);
1364         err = mdio_write(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1365                          BCM8704_USER_OPT_DIGITAL_CTRL, err);
1366         if (err)
1367                 return err;
1368
1369         mdelay(1000);
1370
1371         return 0;
1372 }
1373
1374 static int mrvl88x2011_act_led(struct niu *np, int val)
1375 {
1376         int     err;
1377
1378         err  = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
1379                 MRVL88X2011_LED_8_TO_11_CTL);
1380         if (err < 0)
1381                 return err;
1382
1383         err &= ~MRVL88X2011_LED(MRVL88X2011_LED_ACT,MRVL88X2011_LED_CTL_MASK);
1384         err |=  MRVL88X2011_LED(MRVL88X2011_LED_ACT,val);
1385
1386         return mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
1387                           MRVL88X2011_LED_8_TO_11_CTL, err);
1388 }
1389
1390 static int mrvl88x2011_led_blink_rate(struct niu *np, int rate)
1391 {
1392         int     err;
1393
1394         err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
1395                         MRVL88X2011_LED_BLINK_CTL);
1396         if (err >= 0) {
1397                 err &= ~MRVL88X2011_LED_BLKRATE_MASK;
1398                 err |= (rate << 4);
1399
1400                 err = mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
1401                                  MRVL88X2011_LED_BLINK_CTL, err);
1402         }
1403
1404         return err;
1405 }
1406
1407 static int xcvr_init_10g_mrvl88x2011(struct niu *np)
1408 {
1409         int     err;
1410
1411         /* Set LED functions */
1412         err = mrvl88x2011_led_blink_rate(np, MRVL88X2011_LED_BLKRATE_134MS);
1413         if (err)
1414                 return err;
1415
1416         /* led activity */
1417         err = mrvl88x2011_act_led(np, MRVL88X2011_LED_CTL_OFF);
1418         if (err)
1419                 return err;
1420
1421         err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
1422                         MRVL88X2011_GENERAL_CTL);
1423         if (err < 0)
1424                 return err;
1425
1426         err |= MRVL88X2011_ENA_XFPREFCLK;
1427
1428         err = mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
1429                          MRVL88X2011_GENERAL_CTL, err);
1430         if (err < 0)
1431                 return err;
1432
1433         err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1434                         MRVL88X2011_PMA_PMD_CTL_1);
1435         if (err < 0)
1436                 return err;
1437
1438         if (np->link_config.loopback_mode == LOOPBACK_MAC)
1439                 err |= MRVL88X2011_LOOPBACK;
1440         else
1441                 err &= ~MRVL88X2011_LOOPBACK;
1442
1443         err = mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1444                          MRVL88X2011_PMA_PMD_CTL_1, err);
1445         if (err < 0)
1446                 return err;
1447
1448         /* Enable PMD  */
1449         return mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1450                           MRVL88X2011_10G_PMD_TX_DIS, MRVL88X2011_ENA_PMDTX);
1451 }
1452
1453
1454 static int xcvr_diag_bcm870x(struct niu *np)
1455 {
1456         u16 analog_stat0, tx_alarm_status;
1457         int err = 0;
1458
1459 #if 1
1460         err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR,
1461                         MII_STAT1000);
1462         if (err < 0)
1463                 return err;
1464         pr_info("Port %u PMA_PMD(MII_STAT1000) [%04x]\n", np->port, err);
1465
1466         err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, 0x20);
1467         if (err < 0)
1468                 return err;
1469         pr_info("Port %u USER_DEV3(0x20) [%04x]\n", np->port, err);
1470
1471         err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
1472                         MII_NWAYTEST);
1473         if (err < 0)
1474                 return err;
1475         pr_info("Port %u PHYXS(MII_NWAYTEST) [%04x]\n", np->port, err);
1476 #endif
1477
1478         /* XXX dig this out it might not be so useful XXX */
1479         err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1480                         BCM8704_USER_ANALOG_STATUS0);
1481         if (err < 0)
1482                 return err;
1483         err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1484                         BCM8704_USER_ANALOG_STATUS0);
1485         if (err < 0)
1486                 return err;
1487         analog_stat0 = err;
1488
1489         err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1490                         BCM8704_USER_TX_ALARM_STATUS);
1491         if (err < 0)
1492                 return err;
1493         err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1494                         BCM8704_USER_TX_ALARM_STATUS);
1495         if (err < 0)
1496                 return err;
1497         tx_alarm_status = err;
1498
1499         if (analog_stat0 != 0x03fc) {
1500                 if ((analog_stat0 == 0x43bc) && (tx_alarm_status != 0)) {
1501                         pr_info("Port %u cable not connected or bad cable\n",
1502                                 np->port);
1503                 } else if (analog_stat0 == 0x639c) {
1504                         pr_info("Port %u optical module is bad or missing\n",
1505                                 np->port);
1506                 }
1507         }
1508
1509         return 0;
1510 }
1511
1512 static int xcvr_10g_set_lb_bcm870x(struct niu *np)
1513 {
1514         struct niu_link_config *lp = &np->link_config;
1515         int err;
1516
1517         err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
1518                         MII_BMCR);
1519         if (err < 0)
1520                 return err;
1521
1522         err &= ~BMCR_LOOPBACK;
1523
1524         if (lp->loopback_mode == LOOPBACK_MAC)
1525                 err |= BMCR_LOOPBACK;
1526
1527         err = mdio_write(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
1528                          MII_BMCR, err);
1529         if (err)
1530                 return err;
1531
1532         return 0;
1533 }
1534
1535 static int xcvr_init_10g_bcm8706(struct niu *np)
1536 {
1537         int err = 0;
1538         u64 val;
1539
1540         if ((np->flags & NIU_FLAGS_HOTPLUG_PHY) &&
1541             (np->flags & NIU_FLAGS_HOTPLUG_PHY_PRESENT) == 0)
1542                         return err;
1543
1544         val = nr64_mac(XMAC_CONFIG);
1545         val &= ~XMAC_CONFIG_LED_POLARITY;
1546         val |= XMAC_CONFIG_FORCE_LED_ON;
1547         nw64_mac(XMAC_CONFIG, val);
1548
1549         val = nr64(MIF_CONFIG);
1550         val |= MIF_CONFIG_INDIRECT_MODE;
1551         nw64(MIF_CONFIG, val);
1552
1553         err = bcm8704_reset(np);
1554         if (err)
1555                 return err;
1556
1557         err = xcvr_10g_set_lb_bcm870x(np);
1558         if (err)
1559                 return err;
1560
1561         err = bcm8706_init_user_dev3(np);
1562         if (err)
1563                 return err;
1564
1565         err = xcvr_diag_bcm870x(np);
1566         if (err)
1567                 return err;
1568
1569         return 0;
1570 }
1571
1572 static int xcvr_init_10g_bcm8704(struct niu *np)
1573 {
1574         int err;
1575
1576         err = bcm8704_reset(np);
1577         if (err)
1578                 return err;
1579
1580         err = bcm8704_init_user_dev3(np);
1581         if (err)
1582                 return err;
1583
1584         err = xcvr_10g_set_lb_bcm870x(np);
1585         if (err)
1586                 return err;
1587
1588         err =  xcvr_diag_bcm870x(np);
1589         if (err)
1590                 return err;
1591
1592         return 0;
1593 }
1594
1595 static int xcvr_init_10g(struct niu *np)
1596 {
1597         int phy_id, err;
1598         u64 val;
1599
1600         val = nr64_mac(XMAC_CONFIG);
1601         val &= ~XMAC_CONFIG_LED_POLARITY;
1602         val |= XMAC_CONFIG_FORCE_LED_ON;
1603         nw64_mac(XMAC_CONFIG, val);
1604
1605         /* XXX shared resource, lock parent XXX */
1606         val = nr64(MIF_CONFIG);
1607         val |= MIF_CONFIG_INDIRECT_MODE;
1608         nw64(MIF_CONFIG, val);
1609
1610         phy_id = phy_decode(np->parent->port_phy, np->port);
1611         phy_id = np->parent->phy_probe_info.phy_id[phy_id][np->port];
1612
1613         /* handle different phy types */
1614         switch (phy_id & NIU_PHY_ID_MASK) {
1615         case NIU_PHY_ID_MRVL88X2011:
1616                 err = xcvr_init_10g_mrvl88x2011(np);
1617                 break;
1618
1619         default: /* bcom 8704 */
1620                 err = xcvr_init_10g_bcm8704(np);
1621                 break;
1622         }
1623
1624         return err;
1625 }
1626
1627 static int mii_reset(struct niu *np)
1628 {
1629         int limit, err;
1630
1631         err = mii_write(np, np->phy_addr, MII_BMCR, BMCR_RESET);
1632         if (err)
1633                 return err;
1634
1635         limit = 1000;
1636         while (--limit >= 0) {
1637                 udelay(500);
1638                 err = mii_read(np, np->phy_addr, MII_BMCR);
1639                 if (err < 0)
1640                         return err;
1641                 if (!(err & BMCR_RESET))
1642                         break;
1643         }
1644         if (limit < 0) {
1645                 netdev_err(np->dev, "Port %u MII would not reset, bmcr[%04x]\n",
1646                            np->port, err);
1647                 return -ENODEV;
1648         }
1649
1650         return 0;
1651 }
1652
1653 static int xcvr_init_1g_rgmii(struct niu *np)
1654 {
1655         int err;
1656         u64 val;
1657         u16 bmcr, bmsr, estat;
1658
1659         val = nr64(MIF_CONFIG);
1660         val &= ~MIF_CONFIG_INDIRECT_MODE;
1661         nw64(MIF_CONFIG, val);
1662
1663         err = mii_reset(np);
1664         if (err)
1665                 return err;
1666
1667         err = mii_read(np, np->phy_addr, MII_BMSR);
1668         if (err < 0)
1669                 return err;
1670         bmsr = err;
1671
1672         estat = 0;
1673         if (bmsr & BMSR_ESTATEN) {
1674                 err = mii_read(np, np->phy_addr, MII_ESTATUS);
1675                 if (err < 0)
1676                         return err;
1677                 estat = err;
1678         }
1679
1680         bmcr = 0;
1681         err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
1682         if (err)
1683                 return err;
1684
1685         if (bmsr & BMSR_ESTATEN) {
1686                 u16 ctrl1000 = 0;
1687
1688                 if (estat & ESTATUS_1000_TFULL)
1689                         ctrl1000 |= ADVERTISE_1000FULL;
1690                 err = mii_write(np, np->phy_addr, MII_CTRL1000, ctrl1000);
1691                 if (err)
1692                         return err;
1693         }
1694
1695         bmcr = (BMCR_SPEED1000 | BMCR_FULLDPLX);
1696
1697         err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
1698         if (err)
1699                 return err;
1700
1701         err = mii_read(np, np->phy_addr, MII_BMCR);
1702         if (err < 0)
1703                 return err;
1704         bmcr = mii_read(np, np->phy_addr, MII_BMCR);
1705
1706         err = mii_read(np, np->phy_addr, MII_BMSR);
1707         if (err < 0)
1708                 return err;
1709
1710         return 0;
1711 }
1712
1713 static int mii_init_common(struct niu *np)
1714 {
1715         struct niu_link_config *lp = &np->link_config;
1716         u16 bmcr, bmsr, adv, estat;
1717         int err;
1718
1719         err = mii_reset(np);
1720         if (err)
1721                 return err;
1722
1723         err = mii_read(np, np->phy_addr, MII_BMSR);
1724         if (err < 0)
1725                 return err;
1726         bmsr = err;
1727
1728         estat = 0;
1729         if (bmsr & BMSR_ESTATEN) {
1730                 err = mii_read(np, np->phy_addr, MII_ESTATUS);
1731                 if (err < 0)
1732                         return err;
1733                 estat = err;
1734         }
1735
1736         bmcr = 0;
1737         err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
1738         if (err)
1739                 return err;
1740
1741         if (lp->loopback_mode == LOOPBACK_MAC) {
1742                 bmcr |= BMCR_LOOPBACK;
1743                 if (lp->active_speed == SPEED_1000)
1744                         bmcr |= BMCR_SPEED1000;
1745                 if (lp->active_duplex == DUPLEX_FULL)
1746                         bmcr |= BMCR_FULLDPLX;
1747         }
1748
1749         if (lp->loopback_mode == LOOPBACK_PHY) {
1750                 u16 aux;
1751
1752                 aux = (BCM5464R_AUX_CTL_EXT_LB |
1753                        BCM5464R_AUX_CTL_WRITE_1);
1754                 err = mii_write(np, np->phy_addr, BCM5464R_AUX_CTL, aux);
1755                 if (err)
1756                         return err;
1757         }
1758
1759         if (lp->autoneg) {
1760                 u16 ctrl1000;
1761
1762                 adv = ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP;
1763                 if ((bmsr & BMSR_10HALF) &&
1764                         (lp->advertising & ADVERTISED_10baseT_Half))
1765                         adv |= ADVERTISE_10HALF;
1766                 if ((bmsr & BMSR_10FULL) &&
1767                         (lp->advertising & ADVERTISED_10baseT_Full))
1768                         adv |= ADVERTISE_10FULL;
1769                 if ((bmsr & BMSR_100HALF) &&
1770                         (lp->advertising & ADVERTISED_100baseT_Half))
1771                         adv |= ADVERTISE_100HALF;
1772                 if ((bmsr & BMSR_100FULL) &&
1773                         (lp->advertising & ADVERTISED_100baseT_Full))
1774                         adv |= ADVERTISE_100FULL;
1775                 err = mii_write(np, np->phy_addr, MII_ADVERTISE, adv);
1776                 if (err)
1777                         return err;
1778
1779                 if (likely(bmsr & BMSR_ESTATEN)) {
1780                         ctrl1000 = 0;
1781                         if ((estat & ESTATUS_1000_THALF) &&
1782                                 (lp->advertising & ADVERTISED_1000baseT_Half))
1783                                 ctrl1000 |= ADVERTISE_1000HALF;
1784                         if ((estat & ESTATUS_1000_TFULL) &&
1785                                 (lp->advertising & ADVERTISED_1000baseT_Full))
1786                                 ctrl1000 |= ADVERTISE_1000FULL;
1787                         err = mii_write(np, np->phy_addr,
1788                                         MII_CTRL1000, ctrl1000);
1789                         if (err)
1790                                 return err;
1791                 }
1792
1793                 bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
1794         } else {
1795                 /* !lp->autoneg */
1796                 int fulldpx;
1797
1798                 if (lp->duplex == DUPLEX_FULL) {
1799                         bmcr |= BMCR_FULLDPLX;
1800                         fulldpx = 1;
1801                 } else if (lp->duplex == DUPLEX_HALF)
1802                         fulldpx = 0;
1803                 else
1804                         return -EINVAL;
1805
1806                 if (lp->speed == SPEED_1000) {
1807                         /* if X-full requested while not supported, or
1808                            X-half requested while not supported... */
1809                         if ((fulldpx && !(estat & ESTATUS_1000_TFULL)) ||
1810                                 (!fulldpx && !(estat & ESTATUS_1000_THALF)))
1811                                 return -EINVAL;
1812                         bmcr |= BMCR_SPEED1000;
1813                 } else if (lp->speed == SPEED_100) {
1814                         if ((fulldpx && !(bmsr & BMSR_100FULL)) ||
1815                                 (!fulldpx && !(bmsr & BMSR_100HALF)))
1816                                 return -EINVAL;
1817                         bmcr |= BMCR_SPEED100;
1818                 } else if (lp->speed == SPEED_10) {
1819                         if ((fulldpx && !(bmsr & BMSR_10FULL)) ||
1820                                 (!fulldpx && !(bmsr & BMSR_10HALF)))
1821                                 return -EINVAL;
1822                 } else
1823                         return -EINVAL;
1824         }
1825
1826         err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
1827         if (err)
1828                 return err;
1829
1830 #if 0
1831         err = mii_read(np, np->phy_addr, MII_BMCR);
1832         if (err < 0)
1833                 return err;
1834         bmcr = err;
1835
1836         err = mii_read(np, np->phy_addr, MII_BMSR);
1837         if (err < 0)
1838                 return err;
1839         bmsr = err;
1840
1841         pr_info("Port %u after MII init bmcr[%04x] bmsr[%04x]\n",
1842                 np->port, bmcr, bmsr);
1843 #endif
1844
1845         return 0;
1846 }
1847
1848 static int xcvr_init_1g(struct niu *np)
1849 {
1850         u64 val;
1851
1852         /* XXX shared resource, lock parent XXX */
1853         val = nr64(MIF_CONFIG);
1854         val &= ~MIF_CONFIG_INDIRECT_MODE;
1855         nw64(MIF_CONFIG, val);
1856
1857         return mii_init_common(np);
1858 }
1859
1860 static int niu_xcvr_init(struct niu *np)
1861 {
1862         const struct niu_phy_ops *ops = np->phy_ops;
1863         int err;
1864
1865         err = 0;
1866         if (ops->xcvr_init)
1867                 err = ops->xcvr_init(np);
1868
1869         return err;
1870 }
1871
1872 static int niu_serdes_init(struct niu *np)
1873 {
1874         const struct niu_phy_ops *ops = np->phy_ops;
1875         int err;
1876
1877         err = 0;
1878         if (ops->serdes_init)
1879                 err = ops->serdes_init(np);
1880
1881         return err;
1882 }
1883
1884 static void niu_init_xif(struct niu *);
1885 static void niu_handle_led(struct niu *, int status);
1886
1887 static int niu_link_status_common(struct niu *np, int link_up)
1888 {
1889         struct niu_link_config *lp = &np->link_config;
1890         struct net_device *dev = np->dev;
1891         unsigned long flags;
1892
1893         if (!netif_carrier_ok(dev) && link_up) {
1894                 netif_info(np, link, dev, "Link is up at %s, %s duplex\n",
1895                            lp->active_speed == SPEED_10000 ? "10Gb/sec" :
1896                            lp->active_speed == SPEED_1000 ? "1Gb/sec" :
1897                            lp->active_speed == SPEED_100 ? "100Mbit/sec" :
1898                            "10Mbit/sec",
1899                            lp->active_duplex == DUPLEX_FULL ? "full" : "half");
1900
1901                 spin_lock_irqsave(&np->lock, flags);
1902                 niu_init_xif(np);
1903                 niu_handle_led(np, 1);
1904                 spin_unlock_irqrestore(&np->lock, flags);
1905
1906                 netif_carrier_on(dev);
1907         } else if (netif_carrier_ok(dev) && !link_up) {
1908                 netif_warn(np, link, dev, "Link is down\n");
1909                 spin_lock_irqsave(&np->lock, flags);
1910                 niu_handle_led(np, 0);
1911                 spin_unlock_irqrestore(&np->lock, flags);
1912                 netif_carrier_off(dev);
1913         }
1914
1915         return 0;
1916 }
1917
1918 static int link_status_10g_mrvl(struct niu *np, int *link_up_p)
1919 {
1920         int err, link_up, pma_status, pcs_status;
1921
1922         link_up = 0;
1923
1924         err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1925                         MRVL88X2011_10G_PMD_STATUS_2);
1926         if (err < 0)
1927                 goto out;
1928
1929         /* Check PMA/PMD Register: 1.0001.2 == 1 */
1930         err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1931                         MRVL88X2011_PMA_PMD_STATUS_1);
1932         if (err < 0)
1933                 goto out;
1934
1935         pma_status = ((err & MRVL88X2011_LNK_STATUS_OK) ? 1 : 0);
1936
1937         /* Check PMC Register : 3.0001.2 == 1: read twice */
1938         err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
1939                         MRVL88X2011_PMA_PMD_STATUS_1);
1940         if (err < 0)
1941                 goto out;
1942
1943         err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
1944                         MRVL88X2011_PMA_PMD_STATUS_1);
1945         if (err < 0)
1946                 goto out;
1947
1948         pcs_status = ((err & MRVL88X2011_LNK_STATUS_OK) ? 1 : 0);
1949
1950         /* Check XGXS Register : 4.0018.[0-3,12] */
1951         err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV4_ADDR,
1952                         MRVL88X2011_10G_XGXS_LANE_STAT);
1953         if (err < 0)
1954                 goto out;
1955
1956         if (err == (PHYXS_XGXS_LANE_STAT_ALINGED | PHYXS_XGXS_LANE_STAT_LANE3 |
1957                     PHYXS_XGXS_LANE_STAT_LANE2 | PHYXS_XGXS_LANE_STAT_LANE1 |
1958                     PHYXS_XGXS_LANE_STAT_LANE0 | PHYXS_XGXS_LANE_STAT_MAGIC |
1959                     0x800))
1960                 link_up = (pma_status && pcs_status) ? 1 : 0;
1961
1962         np->link_config.active_speed = SPEED_10000;
1963         np->link_config.active_duplex = DUPLEX_FULL;
1964         err = 0;
1965 out:
1966         mrvl88x2011_act_led(np, (link_up ?
1967                                  MRVL88X2011_LED_CTL_PCS_ACT :
1968                                  MRVL88X2011_LED_CTL_OFF));
1969
1970         *link_up_p = link_up;
1971         return err;
1972 }
1973
1974 static int link_status_10g_bcm8706(struct niu *np, int *link_up_p)
1975 {
1976         int err, link_up;
1977         link_up = 0;
1978
1979         err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR,
1980                         BCM8704_PMD_RCV_SIGDET);
1981         if (err < 0 || err == 0xffff)
1982                 goto out;
1983         if (!(err & PMD_RCV_SIGDET_GLOBAL)) {
1984                 err = 0;
1985                 goto out;
1986         }
1987
1988         err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
1989                         BCM8704_PCS_10G_R_STATUS);
1990         if (err < 0)
1991                 goto out;
1992
1993         if (!(err & PCS_10G_R_STATUS_BLK_LOCK)) {
1994                 err = 0;
1995                 goto out;
1996         }
1997
1998         err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
1999                         BCM8704_PHYXS_XGXS_LANE_STAT);
2000         if (err < 0)
2001                 goto out;
2002         if (err != (PHYXS_XGXS_LANE_STAT_ALINGED |
2003                     PHYXS_XGXS_LANE_STAT_MAGIC |
2004                     PHYXS_XGXS_LANE_STAT_PATTEST |
2005                     PHYXS_XGXS_LANE_STAT_LANE3 |
2006                     PHYXS_XGXS_LANE_STAT_LANE2 |
2007                     PHYXS_XGXS_LANE_STAT_LANE1 |
2008                     PHYXS_XGXS_LANE_STAT_LANE0)) {
2009                 err = 0;
2010                 np->link_config.active_speed = SPEED_INVALID;
2011                 np->link_config.active_duplex = DUPLEX_INVALID;
2012                 goto out;
2013         }
2014
2015         link_up = 1;
2016         np->link_config.active_speed = SPEED_10000;
2017         np->link_config.active_duplex = DUPLEX_FULL;
2018         err = 0;
2019
2020 out:
2021         *link_up_p = link_up;
2022         return err;
2023 }
2024
2025 static int link_status_10g_bcom(struct niu *np, int *link_up_p)
2026 {
2027         int err, link_up;
2028
2029         link_up = 0;
2030
2031         err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR,
2032                         BCM8704_PMD_RCV_SIGDET);
2033         if (err < 0)
2034                 goto out;
2035         if (!(err & PMD_RCV_SIGDET_GLOBAL)) {
2036                 err = 0;
2037                 goto out;
2038         }
2039
2040         err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
2041                         BCM8704_PCS_10G_R_STATUS);
2042         if (err < 0)
2043                 goto out;
2044         if (!(err & PCS_10G_R_STATUS_BLK_LOCK)) {
2045                 err = 0;
2046                 goto out;
2047         }
2048
2049         err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
2050                         BCM8704_PHYXS_XGXS_LANE_STAT);
2051         if (err < 0)
2052                 goto out;
2053
2054         if (err != (PHYXS_XGXS_LANE_STAT_ALINGED |
2055                     PHYXS_XGXS_LANE_STAT_MAGIC |
2056                     PHYXS_XGXS_LANE_STAT_LANE3 |
2057                     PHYXS_XGXS_LANE_STAT_LANE2 |
2058                     PHYXS_XGXS_LANE_STAT_LANE1 |
2059                     PHYXS_XGXS_LANE_STAT_LANE0)) {
2060                 err = 0;
2061                 goto out;
2062         }
2063
2064         link_up = 1;
2065         np->link_config.active_speed = SPEED_10000;
2066         np->link_config.active_duplex = DUPLEX_FULL;
2067         err = 0;
2068
2069 out:
2070         *link_up_p = link_up;
2071         return err;
2072 }
2073
2074 static int link_status_10g(struct niu *np, int *link_up_p)
2075 {
2076         unsigned long flags;
2077         int err = -EINVAL;
2078
2079         spin_lock_irqsave(&np->lock, flags);
2080
2081         if (np->link_config.loopback_mode == LOOPBACK_DISABLED) {
2082                 int phy_id;
2083
2084                 phy_id = phy_decode(np->parent->port_phy, np->port);
2085                 phy_id = np->parent->phy_probe_info.phy_id[phy_id][np->port];
2086
2087                 /* handle different phy types */
2088                 switch (phy_id & NIU_PHY_ID_MASK) {
2089                 case NIU_PHY_ID_MRVL88X2011:
2090                         err = link_status_10g_mrvl(np, link_up_p);
2091                         break;
2092
2093                 default: /* bcom 8704 */
2094                         err = link_status_10g_bcom(np, link_up_p);
2095                         break;
2096                 }
2097         }
2098
2099         spin_unlock_irqrestore(&np->lock, flags);
2100
2101         return err;
2102 }
2103
2104 static int niu_10g_phy_present(struct niu *np)
2105 {
2106         u64 sig, mask, val;
2107
2108         sig = nr64(ESR_INT_SIGNALS);
2109         switch (np->port) {
2110         case 0:
2111                 mask = ESR_INT_SIGNALS_P0_BITS;
2112                 val = (ESR_INT_SRDY0_P0 |
2113                        ESR_INT_DET0_P0 |
2114                        ESR_INT_XSRDY_P0 |
2115                        ESR_INT_XDP_P0_CH3 |
2116                        ESR_INT_XDP_P0_CH2 |
2117                        ESR_INT_XDP_P0_CH1 |
2118                        ESR_INT_XDP_P0_CH0);
2119                 break;
2120
2121         case 1:
2122                 mask = ESR_INT_SIGNALS_P1_BITS;
2123                 val = (ESR_INT_SRDY0_P1 |
2124                        ESR_INT_DET0_P1 |
2125                        ESR_INT_XSRDY_P1 |
2126                        ESR_INT_XDP_P1_CH3 |
2127                        ESR_INT_XDP_P1_CH2 |
2128                        ESR_INT_XDP_P1_CH1 |
2129                        ESR_INT_XDP_P1_CH0);
2130                 break;
2131
2132         default:
2133                 return 0;
2134         }
2135
2136         if ((sig & mask) != val)
2137                 return 0;
2138         return 1;
2139 }
2140
2141 static int link_status_10g_hotplug(struct niu *np, int *link_up_p)
2142 {
2143         unsigned long flags;
2144         int err = 0;
2145         int phy_present;
2146         int phy_present_prev;
2147
2148         spin_lock_irqsave(&np->lock, flags);
2149
2150         if (np->link_config.loopback_mode == LOOPBACK_DISABLED) {
2151                 phy_present_prev = (np->flags & NIU_FLAGS_HOTPLUG_PHY_PRESENT) ?
2152                         1 : 0;
2153                 phy_present = niu_10g_phy_present(np);
2154                 if (phy_present != phy_present_prev) {
2155                         /* state change */
2156                         if (phy_present) {
2157                                 /* A NEM was just plugged in */
2158                                 np->flags |= NIU_FLAGS_HOTPLUG_PHY_PRESENT;
2159                                 if (np->phy_ops->xcvr_init)
2160                                         err = np->phy_ops->xcvr_init(np);
2161                                 if (err) {
2162                                         err = mdio_read(np, np->phy_addr,
2163                                                 BCM8704_PHYXS_DEV_ADDR, MII_BMCR);
2164                                         if (err == 0xffff) {
2165                                                 /* No mdio, back-to-back XAUI */
2166                                                 goto out;
2167                                         }
2168                                         /* debounce */
2169                                         np->flags &= ~NIU_FLAGS_HOTPLUG_PHY_PRESENT;
2170                                 }
2171                         } else {
2172                                 np->flags &= ~NIU_FLAGS_HOTPLUG_PHY_PRESENT;
2173                                 *link_up_p = 0;
2174                                 netif_warn(np, link, np->dev,
2175                                            "Hotplug PHY Removed\n");
2176                         }
2177                 }
2178 out:
2179                 if (np->flags & NIU_FLAGS_HOTPLUG_PHY_PRESENT) {
2180                         err = link_status_10g_bcm8706(np, link_up_p);
2181                         if (err == 0xffff) {
2182                                 /* No mdio, back-to-back XAUI: it is C10NEM */
2183                                 *link_up_p = 1;
2184                                 np->link_config.active_speed = SPEED_10000;
2185                                 np->link_config.active_duplex = DUPLEX_FULL;
2186                         }
2187                 }
2188         }
2189
2190         spin_unlock_irqrestore(&np->lock, flags);
2191
2192         return 0;
2193 }
2194
2195 static int niu_link_status(struct niu *np, int *link_up_p)
2196 {
2197         const struct niu_phy_ops *ops = np->phy_ops;
2198         int err;
2199
2200         err = 0;
2201         if (ops->link_status)
2202                 err = ops->link_status(np, link_up_p);
2203
2204         return err;
2205 }
2206
2207 static void niu_timer(struct timer_list *t)
2208 {
2209         struct niu *np = from_timer(np, t, timer);
2210         unsigned long off;
2211         int err, link_up;
2212
2213         err = niu_link_status(np, &link_up);
2214         if (!err)
2215                 niu_link_status_common(np, link_up);
2216
2217         if (netif_carrier_ok(np->dev))
2218                 off = 5 * HZ;
2219         else
2220                 off = 1 * HZ;
2221         np->timer.expires = jiffies + off;
2222
2223         add_timer(&np->timer);
2224 }
2225
2226 static const struct niu_phy_ops phy_ops_10g_serdes = {
2227         .serdes_init            = serdes_init_10g_serdes,
2228         .link_status            = link_status_10g_serdes,
2229 };
2230
2231 static const struct niu_phy_ops phy_ops_10g_serdes_niu = {
2232         .serdes_init            = serdes_init_niu_10g_serdes,
2233         .link_status            = link_status_10g_serdes,
2234 };
2235
2236 static const struct niu_phy_ops phy_ops_1g_serdes_niu = {
2237         .serdes_init            = serdes_init_niu_1g_serdes,
2238         .link_status            = link_status_1g_serdes,
2239 };
2240
2241 static const struct niu_phy_ops phy_ops_1g_rgmii = {
2242         .xcvr_init              = xcvr_init_1g_rgmii,
2243         .link_status            = link_status_1g_rgmii,
2244 };
2245
2246 static const struct niu_phy_ops phy_ops_10g_fiber_niu = {
2247         .serdes_init            = serdes_init_niu_10g_fiber,
2248         .xcvr_init              = xcvr_init_10g,
2249         .link_status            = link_status_10g,
2250 };
2251
2252 static const struct niu_phy_ops phy_ops_10g_fiber = {
2253         .serdes_init            = serdes_init_10g,
2254         .xcvr_init              = xcvr_init_10g,
2255         .link_status            = link_status_10g,
2256 };
2257
2258 static const struct niu_phy_ops phy_ops_10g_fiber_hotplug = {
2259         .serdes_init            = serdes_init_10g,
2260         .xcvr_init              = xcvr_init_10g_bcm8706,
2261         .link_status            = link_status_10g_hotplug,
2262 };
2263
2264 static const struct niu_phy_ops phy_ops_niu_10g_hotplug = {
2265         .serdes_init            = serdes_init_niu_10g_fiber,
2266         .xcvr_init              = xcvr_init_10g_bcm8706,
2267         .link_status            = link_status_10g_hotplug,
2268 };
2269
2270 static const struct niu_phy_ops phy_ops_10g_copper = {
2271         .serdes_init            = serdes_init_10g,
2272         .link_status            = link_status_10g, /* XXX */
2273 };
2274
2275 static const struct niu_phy_ops phy_ops_1g_fiber = {
2276         .serdes_init            = serdes_init_1g,
2277         .xcvr_init              = xcvr_init_1g,
2278         .link_status            = link_status_1g,
2279 };
2280
2281 static const struct niu_phy_ops phy_ops_1g_copper = {
2282         .xcvr_init              = xcvr_init_1g,
2283         .link_status            = link_status_1g,
2284 };
2285
2286 struct niu_phy_template {
2287         const struct niu_phy_ops        *ops;
2288         u32                             phy_addr_base;
2289 };
2290
2291 static const struct niu_phy_template phy_template_niu_10g_fiber = {
2292         .ops            = &phy_ops_10g_fiber_niu,
2293         .phy_addr_base  = 16,
2294 };
2295
2296 static const struct niu_phy_template phy_template_niu_10g_serdes = {
2297         .ops            = &phy_ops_10g_serdes_niu,
2298         .phy_addr_base  = 0,
2299 };
2300
2301 static const struct niu_phy_template phy_template_niu_1g_serdes = {
2302         .ops            = &phy_ops_1g_serdes_niu,
2303         .phy_addr_base  = 0,
2304 };
2305
2306 static const struct niu_phy_template phy_template_10g_fiber = {
2307         .ops            = &phy_ops_10g_fiber,
2308         .phy_addr_base  = 8,
2309 };
2310
2311 static const struct niu_phy_template phy_template_10g_fiber_hotplug = {
2312         .ops            = &phy_ops_10g_fiber_hotplug,
2313         .phy_addr_base  = 8,
2314 };
2315
2316 static const struct niu_phy_template phy_template_niu_10g_hotplug = {
2317         .ops            = &phy_ops_niu_10g_hotplug,
2318         .phy_addr_base  = 8,
2319 };
2320
2321 static const struct niu_phy_template phy_template_10g_copper = {
2322         .ops            = &phy_ops_10g_copper,
2323         .phy_addr_base  = 10,
2324 };
2325
2326 static const struct niu_phy_template phy_template_1g_fiber = {
2327         .ops            = &phy_ops_1g_fiber,
2328         .phy_addr_base  = 0,
2329 };
2330
2331 static const struct niu_phy_template phy_template_1g_copper = {
2332         .ops            = &phy_ops_1g_copper,
2333         .phy_addr_base  = 0,
2334 };
2335
2336 static const struct niu_phy_template phy_template_1g_rgmii = {
2337         .ops            = &phy_ops_1g_rgmii,
2338         .phy_addr_base  = 0,
2339 };
2340
2341 static const struct niu_phy_template phy_template_10g_serdes = {
2342         .ops            = &phy_ops_10g_serdes,
2343         .phy_addr_base  = 0,
2344 };
2345
2346 static int niu_atca_port_num[4] = {
2347         0, 0,  11, 10
2348 };
2349
2350 static int serdes_init_10g_serdes(struct niu *np)
2351 {
2352         struct niu_link_config *lp = &np->link_config;
2353         unsigned long ctrl_reg, test_cfg_reg, pll_cfg, i;
2354         u64 ctrl_val, test_cfg_val, sig, mask, val;
2355
2356         switch (np->port) {
2357         case 0:
2358                 ctrl_reg = ENET_SERDES_0_CTRL_CFG;
2359                 test_cfg_reg = ENET_SERDES_0_TEST_CFG;
2360                 pll_cfg = ENET_SERDES_0_PLL_CFG;
2361                 break;
2362         case 1:
2363                 ctrl_reg = ENET_SERDES_1_CTRL_CFG;
2364                 test_cfg_reg = ENET_SERDES_1_TEST_CFG;
2365                 pll_cfg = ENET_SERDES_1_PLL_CFG;
2366                 break;
2367
2368         default:
2369                 return -EINVAL;
2370         }
2371         ctrl_val = (ENET_SERDES_CTRL_SDET_0 |
2372                     ENET_SERDES_CTRL_SDET_1 |
2373                     ENET_SERDES_CTRL_SDET_2 |
2374                     ENET_SERDES_CTRL_SDET_3 |
2375                     (0x5 << ENET_SERDES_CTRL_EMPH_0_SHIFT) |
2376                     (0x5 << ENET_SERDES_CTRL_EMPH_1_SHIFT) |
2377                     (0x5 << ENET_SERDES_CTRL_EMPH_2_SHIFT) |
2378                     (0x5 << ENET_SERDES_CTRL_EMPH_3_SHIFT) |
2379                     (0x1 << ENET_SERDES_CTRL_LADJ_0_SHIFT) |
2380                     (0x1 << ENET_SERDES_CTRL_LADJ_1_SHIFT) |
2381                     (0x1 << ENET_SERDES_CTRL_LADJ_2_SHIFT) |
2382                     (0x1 << ENET_SERDES_CTRL_LADJ_3_SHIFT));
2383         test_cfg_val = 0;
2384
2385         if (lp->loopback_mode == LOOPBACK_PHY) {
2386                 test_cfg_val |= ((ENET_TEST_MD_PAD_LOOPBACK <<
2387                                   ENET_SERDES_TEST_MD_0_SHIFT) |
2388                                  (ENET_TEST_MD_PAD_LOOPBACK <<
2389                                   ENET_SERDES_TEST_MD_1_SHIFT) |
2390                                  (ENET_TEST_MD_PAD_LOOPBACK <<
2391                                   ENET_SERDES_TEST_MD_2_SHIFT) |
2392                                  (ENET_TEST_MD_PAD_LOOPBACK <<
2393                                   ENET_SERDES_TEST_MD_3_SHIFT));
2394         }
2395
2396         esr_reset(np);
2397         nw64(pll_cfg, ENET_SERDES_PLL_FBDIV2);
2398         nw64(ctrl_reg, ctrl_val);
2399         nw64(test_cfg_reg, test_cfg_val);
2400
2401         /* Initialize all 4 lanes of the SERDES.  */
2402         for (i = 0; i < 4; i++) {
2403                 u32 rxtx_ctrl, glue0;
2404                 int err;
2405
2406                 err = esr_read_rxtx_ctrl(np, i, &rxtx_ctrl);
2407                 if (err)
2408                         return err;
2409                 err = esr_read_glue0(np, i, &glue0);
2410                 if (err)
2411                         return err;
2412
2413                 rxtx_ctrl &= ~(ESR_RXTX_CTRL_VMUXLO);
2414                 rxtx_ctrl |= (ESR_RXTX_CTRL_ENSTRETCH |
2415                               (2 << ESR_RXTX_CTRL_VMUXLO_SHIFT));
2416
2417                 glue0 &= ~(ESR_GLUE_CTRL0_SRATE |
2418                            ESR_GLUE_CTRL0_THCNT |
2419                            ESR_GLUE_CTRL0_BLTIME);
2420                 glue0 |= (ESR_GLUE_CTRL0_RXLOSENAB |
2421                           (0xf << ESR_GLUE_CTRL0_SRATE_SHIFT) |
2422                           (0xff << ESR_GLUE_CTRL0_THCNT_SHIFT) |
2423                           (BLTIME_300_CYCLES <<
2424                            ESR_GLUE_CTRL0_BLTIME_SHIFT));
2425
2426                 err = esr_write_rxtx_ctrl(np, i, rxtx_ctrl);
2427                 if (err)
2428                         return err;
2429                 err = esr_write_glue0(np, i, glue0);
2430                 if (err)
2431                         return err;
2432         }
2433
2434
2435         sig = nr64(ESR_INT_SIGNALS);
2436         switch (np->port) {
2437         case 0:
2438                 mask = ESR_INT_SIGNALS_P0_BITS;
2439                 val = (ESR_INT_SRDY0_P0 |
2440                        ESR_INT_DET0_P0 |
2441                        ESR_INT_XSRDY_P0 |
2442                        ESR_INT_XDP_P0_CH3 |
2443                        ESR_INT_XDP_P0_CH2 |
2444                        ESR_INT_XDP_P0_CH1 |
2445                        ESR_INT_XDP_P0_CH0);
2446                 break;
2447
2448         case 1:
2449                 mask = ESR_INT_SIGNALS_P1_BITS;
2450                 val = (ESR_INT_SRDY0_P1 |
2451                        ESR_INT_DET0_P1 |
2452                        ESR_INT_XSRDY_P1 |
2453                        ESR_INT_XDP_P1_CH3 |
2454                        ESR_INT_XDP_P1_CH2 |
2455                        ESR_INT_XDP_P1_CH1 |
2456                        ESR_INT_XDP_P1_CH0);
2457                 break;
2458
2459         default:
2460                 return -EINVAL;
2461         }
2462
2463         if ((sig & mask) != val) {
2464                 int err;
2465                 err = serdes_init_1g_serdes(np);
2466                 if (!err) {
2467                         np->flags &= ~NIU_FLAGS_10G;
2468                         np->mac_xcvr = MAC_XCVR_PCS;
2469                 }  else {
2470                         netdev_err(np->dev, "Port %u 10G/1G SERDES Link Failed\n",
2471                                    np->port);
2472                         return -ENODEV;
2473                 }
2474         }
2475
2476         return 0;
2477 }
2478
2479 static int niu_determine_phy_disposition(struct niu *np)
2480 {
2481         struct niu_parent *parent = np->parent;
2482         u8 plat_type = parent->plat_type;
2483         const struct niu_phy_template *tp;
2484         u32 phy_addr_off = 0;
2485
2486         if (plat_type == PLAT_TYPE_NIU) {
2487                 switch (np->flags &
2488                         (NIU_FLAGS_10G |
2489                          NIU_FLAGS_FIBER |
2490                          NIU_FLAGS_XCVR_SERDES)) {
2491                 case NIU_FLAGS_10G | NIU_FLAGS_XCVR_SERDES:
2492                         /* 10G Serdes */
2493                         tp = &phy_template_niu_10g_serdes;
2494                         break;
2495                 case NIU_FLAGS_XCVR_SERDES:
2496                         /* 1G Serdes */
2497                         tp = &phy_template_niu_1g_serdes;
2498                         break;
2499                 case NIU_FLAGS_10G | NIU_FLAGS_FIBER:
2500                         /* 10G Fiber */
2501                 default:
2502                         if (np->flags & NIU_FLAGS_HOTPLUG_PHY) {
2503                                 tp = &phy_template_niu_10g_hotplug;
2504                                 if (np->port == 0)
2505                                         phy_addr_off = 8;
2506                                 if (np->port == 1)
2507                                         phy_addr_off = 12;
2508                         } else {
2509                                 tp = &phy_template_niu_10g_fiber;
2510                                 phy_addr_off += np->port;
2511                         }
2512                         break;
2513                 }
2514         } else {
2515                 switch (np->flags &
2516                         (NIU_FLAGS_10G |
2517                          NIU_FLAGS_FIBER |
2518                          NIU_FLAGS_XCVR_SERDES)) {
2519                 case 0:
2520                         /* 1G copper */
2521                         tp = &phy_template_1g_copper;
2522                         if (plat_type == PLAT_TYPE_VF_P0)
2523                                 phy_addr_off = 10;
2524                         else if (plat_type == PLAT_TYPE_VF_P1)
2525                                 phy_addr_off = 26;
2526
2527                         phy_addr_off += (np->port ^ 0x3);
2528                         break;
2529
2530                 case NIU_FLAGS_10G:
2531                         /* 10G copper */
2532                         tp = &phy_template_10g_copper;
2533                         break;
2534
2535                 case NIU_FLAGS_FIBER:
2536                         /* 1G fiber */
2537                         tp = &phy_template_1g_fiber;
2538                         break;
2539
2540                 case NIU_FLAGS_10G | NIU_FLAGS_FIBER:
2541                         /* 10G fiber */
2542                         tp = &phy_template_10g_fiber;
2543                         if (plat_type == PLAT_TYPE_VF_P0 ||
2544                             plat_type == PLAT_TYPE_VF_P1)
2545                                 phy_addr_off = 8;
2546                         phy_addr_off += np->port;
2547                         if (np->flags & NIU_FLAGS_HOTPLUG_PHY) {
2548                                 tp = &phy_template_10g_fiber_hotplug;
2549                                 if (np->port == 0)
2550                                         phy_addr_off = 8;
2551                                 if (np->port == 1)
2552                                         phy_addr_off = 12;
2553                         }
2554                         break;
2555
2556                 case NIU_FLAGS_10G | NIU_FLAGS_XCVR_SERDES:
2557                 case NIU_FLAGS_XCVR_SERDES | NIU_FLAGS_FIBER:
2558                 case NIU_FLAGS_XCVR_SERDES:
2559                         switch(np->port) {
2560                         case 0:
2561                         case 1:
2562                                 tp = &phy_template_10g_serdes;
2563                                 break;
2564                         case 2:
2565                         case 3:
2566                                 tp = &phy_template_1g_rgmii;
2567                                 break;
2568                         default:
2569                                 return -EINVAL;
2570                         }
2571                         phy_addr_off = niu_atca_port_num[np->port];
2572                         break;
2573
2574                 default:
2575                         return -EINVAL;
2576                 }
2577         }
2578
2579         np->phy_ops = tp->ops;
2580         np->phy_addr = tp->phy_addr_base + phy_addr_off;
2581
2582         return 0;
2583 }
2584
2585 static int niu_init_link(struct niu *np)
2586 {
2587         struct niu_parent *parent = np->parent;
2588         int err, ignore;
2589
2590         if (parent->plat_type == PLAT_TYPE_NIU) {
2591                 err = niu_xcvr_init(np);
2592                 if (err)
2593                         return err;
2594                 msleep(200);
2595         }
2596         err = niu_serdes_init(np);
2597         if (err && !(np->flags & NIU_FLAGS_HOTPLUG_PHY))
2598                 return err;
2599         msleep(200);
2600         err = niu_xcvr_init(np);
2601         if (!err || (np->flags & NIU_FLAGS_HOTPLUG_PHY))
2602                 niu_link_status(np, &ignore);
2603         return 0;
2604 }
2605
2606 static void niu_set_primary_mac(struct niu *np, unsigned char *addr)
2607 {
2608         u16 reg0 = addr[4] << 8 | addr[5];
2609         u16 reg1 = addr[2] << 8 | addr[3];
2610         u16 reg2 = addr[0] << 8 | addr[1];
2611
2612         if (np->flags & NIU_FLAGS_XMAC) {
2613                 nw64_mac(XMAC_ADDR0, reg0);
2614                 nw64_mac(XMAC_ADDR1, reg1);
2615                 nw64_mac(XMAC_ADDR2, reg2);
2616         } else {
2617                 nw64_mac(BMAC_ADDR0, reg0);
2618                 nw64_mac(BMAC_ADDR1, reg1);
2619                 nw64_mac(BMAC_ADDR2, reg2);
2620         }
2621 }
2622
2623 static int niu_num_alt_addr(struct niu *np)
2624 {
2625         if (np->flags & NIU_FLAGS_XMAC)
2626                 return XMAC_NUM_ALT_ADDR;
2627         else
2628                 return BMAC_NUM_ALT_ADDR;
2629 }
2630
2631 static int niu_set_alt_mac(struct niu *np, int index, unsigned char *addr)
2632 {
2633         u16 reg0 = addr[4] << 8 | addr[5];
2634         u16 reg1 = addr[2] << 8 | addr[3];
2635         u16 reg2 = addr[0] << 8 | addr[1];
2636
2637         if (index >= niu_num_alt_addr(np))
2638                 return -EINVAL;
2639
2640         if (np->flags & NIU_FLAGS_XMAC) {
2641                 nw64_mac(XMAC_ALT_ADDR0(index), reg0);
2642                 nw64_mac(XMAC_ALT_ADDR1(index), reg1);
2643                 nw64_mac(XMAC_ALT_ADDR2(index), reg2);
2644         } else {
2645                 nw64_mac(BMAC_ALT_ADDR0(index), reg0);
2646                 nw64_mac(BMAC_ALT_ADDR1(index), reg1);
2647                 nw64_mac(BMAC_ALT_ADDR2(index), reg2);
2648         }
2649
2650         return 0;
2651 }
2652
2653 static int niu_enable_alt_mac(struct niu *np, int index, int on)
2654 {
2655         unsigned long reg;
2656         u64 val, mask;
2657
2658         if (index >= niu_num_alt_addr(np))
2659                 return -EINVAL;
2660
2661         if (np->flags & NIU_FLAGS_XMAC) {
2662                 reg = XMAC_ADDR_CMPEN;
2663                 mask = 1 << index;
2664         } else {
2665                 reg = BMAC_ADDR_CMPEN;
2666                 mask = 1 << (index + 1);
2667         }
2668
2669         val = nr64_mac(reg);
2670         if (on)
2671                 val |= mask;
2672         else
2673                 val &= ~mask;
2674         nw64_mac(reg, val);
2675
2676         return 0;
2677 }
2678
2679 static void __set_rdc_table_num_hw(struct niu *np, unsigned long reg,
2680                                    int num, int mac_pref)
2681 {
2682         u64 val = nr64_mac(reg);
2683         val &= ~(HOST_INFO_MACRDCTBLN | HOST_INFO_MPR);
2684         val |= num;
2685         if (mac_pref)
2686                 val |= HOST_INFO_MPR;
2687         nw64_mac(reg, val);
2688 }
2689
2690 static int __set_rdc_table_num(struct niu *np,
2691                                int xmac_index, int bmac_index,
2692                                int rdc_table_num, int mac_pref)
2693 {
2694         unsigned long reg;
2695
2696         if (rdc_table_num & ~HOST_INFO_MACRDCTBLN)
2697                 return -EINVAL;
2698         if (np->flags & NIU_FLAGS_XMAC)
2699                 reg = XMAC_HOST_INFO(xmac_index);
2700         else
2701                 reg = BMAC_HOST_INFO(bmac_index);
2702         __set_rdc_table_num_hw(np, reg, rdc_table_num, mac_pref);
2703         return 0;
2704 }
2705
2706 static int niu_set_primary_mac_rdc_table(struct niu *np, int table_num,
2707                                          int mac_pref)
2708 {
2709         return __set_rdc_table_num(np, 17, 0, table_num, mac_pref);
2710 }
2711
2712 static int niu_set_multicast_mac_rdc_table(struct niu *np, int table_num,
2713                                            int mac_pref)
2714 {
2715         return __set_rdc_table_num(np, 16, 8, table_num, mac_pref);
2716 }
2717
2718 static int niu_set_alt_mac_rdc_table(struct niu *np, int idx,
2719                                      int table_num, int mac_pref)
2720 {
2721         if (idx >= niu_num_alt_addr(np))
2722                 return -EINVAL;
2723         return __set_rdc_table_num(np, idx, idx + 1, table_num, mac_pref);
2724 }
2725
2726 static u64 vlan_entry_set_parity(u64 reg_val)
2727 {
2728         u64 port01_mask;
2729         u64 port23_mask;
2730
2731         port01_mask = 0x00ff;
2732         port23_mask = 0xff00;
2733
2734         if (hweight64(reg_val & port01_mask) & 1)
2735                 reg_val |= ENET_VLAN_TBL_PARITY0;
2736         else
2737                 reg_val &= ~ENET_VLAN_TBL_PARITY0;
2738
2739         if (hweight64(reg_val & port23_mask) & 1)
2740                 reg_val |= ENET_VLAN_TBL_PARITY1;
2741         else
2742                 reg_val &= ~ENET_VLAN_TBL_PARITY1;
2743
2744         return reg_val;
2745 }
2746
2747 static void vlan_tbl_write(struct niu *np, unsigned long index,
2748                            int port, int vpr, int rdc_table)
2749 {
2750         u64 reg_val = nr64(ENET_VLAN_TBL(index));
2751
2752         reg_val &= ~((ENET_VLAN_TBL_VPR |
2753                       ENET_VLAN_TBL_VLANRDCTBLN) <<
2754                      ENET_VLAN_TBL_SHIFT(port));
2755         if (vpr)
2756                 reg_val |= (ENET_VLAN_TBL_VPR <<
2757                             ENET_VLAN_TBL_SHIFT(port));
2758         reg_val |= (rdc_table << ENET_VLAN_TBL_SHIFT(port));
2759
2760         reg_val = vlan_entry_set_parity(reg_val);
2761
2762         nw64(ENET_VLAN_TBL(index), reg_val);
2763 }
2764
2765 static void vlan_tbl_clear(struct niu *np)
2766 {
2767         int i;
2768
2769         for (i = 0; i < ENET_VLAN_TBL_NUM_ENTRIES; i++)
2770                 nw64(ENET_VLAN_TBL(i), 0);
2771 }
2772
2773 static int tcam_wait_bit(struct niu *np, u64 bit)
2774 {
2775         int limit = 1000;
2776
2777         while (--limit > 0) {
2778                 if (nr64(TCAM_CTL) & bit)
2779                         break;
2780                 udelay(1);
2781         }
2782         if (limit <= 0)
2783                 return -ENODEV;
2784
2785         return 0;
2786 }
2787
2788 static int tcam_flush(struct niu *np, int index)
2789 {
2790         nw64(TCAM_KEY_0, 0x00);
2791         nw64(TCAM_KEY_MASK_0, 0xff);
2792         nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_WRITE | index));
2793
2794         return tcam_wait_bit(np, TCAM_CTL_STAT);
2795 }
2796
2797 #if 0
2798 static int tcam_read(struct niu *np, int index,
2799                      u64 *key, u64 *mask)
2800 {
2801         int err;
2802
2803         nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_READ | index));
2804         err = tcam_wait_bit(np, TCAM_CTL_STAT);
2805         if (!err) {
2806                 key[0] = nr64(TCAM_KEY_0);
2807                 key[1] = nr64(TCAM_KEY_1);
2808                 key[2] = nr64(TCAM_KEY_2);
2809                 key[3] = nr64(TCAM_KEY_3);
2810                 mask[0] = nr64(TCAM_KEY_MASK_0);
2811                 mask[1] = nr64(TCAM_KEY_MASK_1);
2812                 mask[2] = nr64(TCAM_KEY_MASK_2);
2813                 mask[3] = nr64(TCAM_KEY_MASK_3);
2814         }
2815         return err;
2816 }
2817 #endif
2818
2819 static int tcam_write(struct niu *np, int index,
2820                       u64 *key, u64 *mask)
2821 {
2822         nw64(TCAM_KEY_0, key[0]);
2823         nw64(TCAM_KEY_1, key[1]);
2824         nw64(TCAM_KEY_2, key[2]);
2825         nw64(TCAM_KEY_3, key[3]);
2826         nw64(TCAM_KEY_MASK_0, mask[0]);
2827         nw64(TCAM_KEY_MASK_1, mask[1]);
2828         nw64(TCAM_KEY_MASK_2, mask[2]);
2829         nw64(TCAM_KEY_MASK_3, mask[3]);
2830         nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_WRITE | index));
2831
2832         return tcam_wait_bit(np, TCAM_CTL_STAT);
2833 }
2834
2835 #if 0
2836 static int tcam_assoc_read(struct niu *np, int index, u64 *data)
2837 {
2838         int err;
2839
2840         nw64(TCAM_CTL, (TCAM_CTL_RWC_RAM_READ | index));
2841         err = tcam_wait_bit(np, TCAM_CTL_STAT);
2842         if (!err)
2843                 *data = nr64(TCAM_KEY_1);
2844
2845         return err;
2846 }
2847 #endif
2848
2849 static int tcam_assoc_write(struct niu *np, int index, u64 assoc_data)
2850 {
2851         nw64(TCAM_KEY_1, assoc_data);
2852         nw64(TCAM_CTL, (TCAM_CTL_RWC_RAM_WRITE | index));
2853
2854         return tcam_wait_bit(np, TCAM_CTL_STAT);
2855 }
2856
2857 static void tcam_enable(struct niu *np, int on)
2858 {
2859         u64 val = nr64(FFLP_CFG_1);
2860
2861         if (on)
2862                 val &= ~FFLP_CFG_1_TCAM_DIS;
2863         else
2864                 val |= FFLP_CFG_1_TCAM_DIS;
2865         nw64(FFLP_CFG_1, val);
2866 }
2867
2868 static void tcam_set_lat_and_ratio(struct niu *np, u64 latency, u64 ratio)
2869 {
2870         u64 val = nr64(FFLP_CFG_1);
2871
2872         val &= ~(FFLP_CFG_1_FFLPINITDONE |
2873                  FFLP_CFG_1_CAMLAT |
2874                  FFLP_CFG_1_CAMRATIO);
2875         val |= (latency << FFLP_CFG_1_CAMLAT_SHIFT);
2876         val |= (ratio << FFLP_CFG_1_CAMRATIO_SHIFT);
2877         nw64(FFLP_CFG_1, val);
2878
2879         val = nr64(FFLP_CFG_1);
2880         val |= FFLP_CFG_1_FFLPINITDONE;
2881         nw64(FFLP_CFG_1, val);
2882 }
2883
2884 static int tcam_user_eth_class_enable(struct niu *np, unsigned long class,
2885                                       int on)
2886 {
2887         unsigned long reg;
2888         u64 val;
2889
2890         if (class < CLASS_CODE_ETHERTYPE1 ||
2891             class > CLASS_CODE_ETHERTYPE2)
2892                 return -EINVAL;
2893
2894         reg = L2_CLS(class - CLASS_CODE_ETHERTYPE1);
2895         val = nr64(reg);
2896         if (on)
2897                 val |= L2_CLS_VLD;
2898         else
2899                 val &= ~L2_CLS_VLD;
2900         nw64(reg, val);
2901
2902         return 0;
2903 }
2904
2905 #if 0
2906 static int tcam_user_eth_class_set(struct niu *np, unsigned long class,
2907                                    u64 ether_type)
2908 {
2909         unsigned long reg;
2910         u64 val;
2911
2912         if (class < CLASS_CODE_ETHERTYPE1 ||
2913             class > CLASS_CODE_ETHERTYPE2 ||
2914             (ether_type & ~(u64)0xffff) != 0)
2915                 return -EINVAL;
2916
2917         reg = L2_CLS(class - CLASS_CODE_ETHERTYPE1);
2918         val = nr64(reg);
2919         val &= ~L2_CLS_ETYPE;
2920         val |= (ether_type << L2_CLS_ETYPE_SHIFT);
2921         nw64(reg, val);
2922
2923         return 0;
2924 }
2925 #endif
2926
2927 static int tcam_user_ip_class_enable(struct niu *np, unsigned long class,
2928                                      int on)
2929 {
2930         unsigned long reg;
2931         u64 val;
2932
2933         if (class < CLASS_CODE_USER_PROG1 ||
2934             class > CLASS_CODE_USER_PROG4)
2935                 return -EINVAL;
2936
2937         reg = L3_CLS(class - CLASS_CODE_USER_PROG1);
2938         val = nr64(reg);
2939         if (on)
2940                 val |= L3_CLS_VALID;
2941         else
2942                 val &= ~L3_CLS_VALID;
2943         nw64(reg, val);
2944
2945         return 0;
2946 }
2947
2948 static int tcam_user_ip_class_set(struct niu *np, unsigned long class,
2949                                   int ipv6, u64 protocol_id,
2950                                   u64 tos_mask, u64 tos_val)
2951 {
2952         unsigned long reg;
2953         u64 val;
2954
2955         if (class < CLASS_CODE_USER_PROG1 ||
2956             class > CLASS_CODE_USER_PROG4 ||
2957             (protocol_id & ~(u64)0xff) != 0 ||
2958             (tos_mask & ~(u64)0xff) != 0 ||
2959             (tos_val & ~(u64)0xff) != 0)
2960                 return -EINVAL;
2961
2962         reg = L3_CLS(class - CLASS_CODE_USER_PROG1);
2963         val = nr64(reg);
2964         val &= ~(L3_CLS_IPVER | L3_CLS_PID |
2965                  L3_CLS_TOSMASK | L3_CLS_TOS);
2966         if (ipv6)
2967                 val |= L3_CLS_IPVER;
2968         val |= (protocol_id << L3_CLS_PID_SHIFT);
2969         val |= (tos_mask << L3_CLS_TOSMASK_SHIFT);
2970         val |= (tos_val << L3_CLS_TOS_SHIFT);
2971         nw64(reg, val);
2972
2973         return 0;
2974 }
2975
2976 static int tcam_early_init(struct niu *np)
2977 {
2978         unsigned long i;
2979         int err;
2980
2981         tcam_enable(np, 0);
2982         tcam_set_lat_and_ratio(np,
2983                                DEFAULT_TCAM_LATENCY,
2984                                DEFAULT_TCAM_ACCESS_RATIO);
2985         for (i = CLASS_CODE_ETHERTYPE1; i <= CLASS_CODE_ETHERTYPE2; i++) {
2986                 err = tcam_user_eth_class_enable(np, i, 0);
2987                 if (err)
2988                         return err;
2989         }
2990         for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_USER_PROG4; i++) {
2991                 err = tcam_user_ip_class_enable(np, i, 0);
2992                 if (err)
2993                         return err;
2994         }
2995
2996         return 0;
2997 }
2998
2999 static int tcam_flush_all(struct niu *np)
3000 {
3001         unsigned long i;
3002
3003         for (i = 0; i < np->parent->tcam_num_entries; i++) {
3004                 int err = tcam_flush(np, i);
3005                 if (err)
3006                         return err;
3007         }
3008         return 0;
3009 }
3010
3011 static u64 hash_addr_regval(unsigned long index, unsigned long num_entries)
3012 {
3013         return (u64)index | (num_entries == 1 ? HASH_TBL_ADDR_AUTOINC : 0);
3014 }
3015
3016 #if 0
3017 static int hash_read(struct niu *np, unsigned long partition,
3018                      unsigned long index, unsigned long num_entries,
3019                      u64 *data)
3020 {
3021         u64 val = hash_addr_regval(index, num_entries);
3022         unsigned long i;
3023
3024         if (partition >= FCRAM_NUM_PARTITIONS ||
3025             index + num_entries > FCRAM_SIZE)
3026                 return -EINVAL;
3027
3028         nw64(HASH_TBL_ADDR(partition), val);
3029         for (i = 0; i < num_entries; i++)
3030                 data[i] = nr64(HASH_TBL_DATA(partition));
3031
3032         return 0;
3033 }
3034 #endif
3035
3036 static int hash_write(struct niu *np, unsigned long partition,
3037                       unsigned long index, unsigned long num_entries,
3038                       u64 *data)
3039 {
3040         u64 val = hash_addr_regval(index, num_entries);
3041         unsigned long i;
3042
3043         if (partition >= FCRAM_NUM_PARTITIONS ||
3044             index + (num_entries * 8) > FCRAM_SIZE)
3045                 return -EINVAL;
3046
3047         nw64(HASH_TBL_ADDR(partition), val);
3048         for (i = 0; i < num_entries; i++)
3049                 nw64(HASH_TBL_DATA(partition), data[i]);
3050
3051         return 0;
3052 }
3053
3054 static void fflp_reset(struct niu *np)
3055 {
3056         u64 val;
3057
3058         nw64(FFLP_CFG_1, FFLP_CFG_1_PIO_FIO_RST);
3059         udelay(10);
3060         nw64(FFLP_CFG_1, 0);
3061
3062         val = FFLP_CFG_1_FCRAMOUTDR_NORMAL | FFLP_CFG_1_FFLPINITDONE;
3063         nw64(FFLP_CFG_1, val);
3064 }
3065
3066 static void fflp_set_timings(struct niu *np)
3067 {
3068         u64 val = nr64(FFLP_CFG_1);
3069
3070         val &= ~FFLP_CFG_1_FFLPINITDONE;
3071         val |= (DEFAULT_FCRAMRATIO << FFLP_CFG_1_FCRAMRATIO_SHIFT);
3072         nw64(FFLP_CFG_1, val);
3073
3074         val = nr64(FFLP_CFG_1);
3075         val |= FFLP_CFG_1_FFLPINITDONE;
3076         nw64(FFLP_CFG_1, val);
3077
3078         val = nr64(FCRAM_REF_TMR);
3079         val &= ~(FCRAM_REF_TMR_MAX | FCRAM_REF_TMR_MIN);
3080         val |= (DEFAULT_FCRAM_REFRESH_MAX << FCRAM_REF_TMR_MAX_SHIFT);
3081         val |= (DEFAULT_FCRAM_REFRESH_MIN << FCRAM_REF_TMR_MIN_SHIFT);
3082         nw64(FCRAM_REF_TMR, val);
3083 }
3084
3085 static int fflp_set_partition(struct niu *np, u64 partition,
3086                               u64 mask, u64 base, int enable)
3087 {
3088         unsigned long reg;
3089         u64 val;
3090
3091         if (partition >= FCRAM_NUM_PARTITIONS ||
3092             (mask & ~(u64)0x1f) != 0 ||
3093             (base & ~(u64)0x1f) != 0)
3094                 return -EINVAL;
3095
3096         reg = FLW_PRT_SEL(partition);
3097
3098         val = nr64(reg);
3099         val &= ~(FLW_PRT_SEL_EXT | FLW_PRT_SEL_MASK | FLW_PRT_SEL_BASE);
3100         val |= (mask << FLW_PRT_SEL_MASK_SHIFT);
3101         val |= (base << FLW_PRT_SEL_BASE_SHIFT);
3102         if (enable)
3103                 val |= FLW_PRT_SEL_EXT;
3104         nw64(reg, val);
3105
3106         return 0;
3107 }
3108
3109 static int fflp_disable_all_partitions(struct niu *np)
3110 {
3111         unsigned long i;
3112
3113         for (i = 0; i < FCRAM_NUM_PARTITIONS; i++) {
3114                 int err = fflp_set_partition(np, 0, 0, 0, 0);
3115                 if (err)
3116                         return err;
3117         }
3118         return 0;
3119 }
3120
3121 static void fflp_llcsnap_enable(struct niu *np, int on)
3122 {
3123         u64 val = nr64(FFLP_CFG_1);
3124
3125         if (on)
3126                 val |= FFLP_CFG_1_LLCSNAP;
3127         else
3128                 val &= ~FFLP_CFG_1_LLCSNAP;
3129         nw64(FFLP_CFG_1, val);
3130 }
3131
3132 static void fflp_errors_enable(struct niu *np, int on)
3133 {
3134         u64 val = nr64(FFLP_CFG_1);
3135
3136         if (on)
3137                 val &= ~FFLP_CFG_1_ERRORDIS;
3138         else
3139                 val |= FFLP_CFG_1_ERRORDIS;
3140         nw64(FFLP_CFG_1, val);
3141 }
3142
3143 static int fflp_hash_clear(struct niu *np)
3144 {
3145         struct fcram_hash_ipv4 ent;
3146         unsigned long i;
3147
3148         /* IPV4 hash entry with valid bit clear, rest is don't care.  */
3149         memset(&ent, 0, sizeof(ent));
3150         ent.header = HASH_HEADER_EXT;
3151
3152         for (i = 0; i < FCRAM_SIZE; i += sizeof(ent)) {
3153                 int err = hash_write(np, 0, i, 1, (u64 *) &ent);
3154                 if (err)
3155                         return err;
3156         }
3157         return 0;
3158 }
3159
3160 static int fflp_early_init(struct niu *np)
3161 {
3162         struct niu_parent *parent;
3163         unsigned long flags;
3164         int err;
3165
3166         niu_lock_parent(np, flags);
3167
3168         parent = np->parent;
3169         err = 0;
3170         if (!(parent->flags & PARENT_FLGS_CLS_HWINIT)) {
3171                 if (np->parent->plat_type != PLAT_TYPE_NIU) {
3172                         fflp_reset(np);
3173                         fflp_set_timings(np);
3174                         err = fflp_disable_all_partitions(np);
3175                         if (err) {
3176                                 netif_printk(np, probe, KERN_DEBUG, np->dev,
3177                                              "fflp_disable_all_partitions failed, err=%d\n",
3178                                              err);
3179                                 goto out;
3180                         }
3181                 }
3182
3183                 err = tcam_early_init(np);
3184                 if (err) {
3185                         netif_printk(np, probe, KERN_DEBUG, np->dev,
3186                                      "tcam_early_init failed, err=%d\n", err);
3187                         goto out;
3188                 }
3189                 fflp_llcsnap_enable(np, 1);
3190                 fflp_errors_enable(np, 0);
3191                 nw64(H1POLY, 0);
3192                 nw64(H2POLY, 0);
3193
3194                 err = tcam_flush_all(np);
3195                 if (err) {
3196                         netif_printk(np, probe, KERN_DEBUG, np->dev,
3197                                      "tcam_flush_all failed, err=%d\n", err);
3198                         goto out;
3199                 }
3200                 if (np->parent->plat_type != PLAT_TYPE_NIU) {
3201                         err = fflp_hash_clear(np);
3202                         if (err) {
3203                                 netif_printk(np, probe, KERN_DEBUG, np->dev,
3204                                              "fflp_hash_clear failed, err=%d\n",
3205                                              err);
3206                                 goto out;
3207                         }
3208                 }
3209
3210                 vlan_tbl_clear(np);
3211
3212                 parent->flags |= PARENT_FLGS_CLS_HWINIT;
3213         }
3214 out:
3215         niu_unlock_parent(np, flags);
3216         return err;
3217 }
3218
3219 static int niu_set_flow_key(struct niu *np, unsigned long class_code, u64 key)
3220 {
3221         if (class_code < CLASS_CODE_USER_PROG1 ||
3222             class_code > CLASS_CODE_SCTP_IPV6)
3223                 return -EINVAL;
3224
3225         nw64(FLOW_KEY(class_code - CLASS_CODE_USER_PROG1), key);
3226         return 0;
3227 }
3228
3229 static int niu_set_tcam_key(struct niu *np, unsigned long class_code, u64 key)
3230 {
3231         if (class_code < CLASS_CODE_USER_PROG1 ||
3232             class_code > CLASS_CODE_SCTP_IPV6)
3233                 return -EINVAL;
3234
3235         nw64(TCAM_KEY(class_code - CLASS_CODE_USER_PROG1), key);
3236         return 0;
3237 }
3238
3239 /* Entries for the ports are interleaved in the TCAM */
3240 static u16 tcam_get_index(struct niu *np, u16 idx)
3241 {
3242         /* One entry reserved for IP fragment rule */
3243         if (idx >= (np->clas.tcam_sz - 1))
3244                 idx = 0;
3245         return np->clas.tcam_top + ((idx+1) * np->parent->num_ports);
3246 }
3247
3248 static u16 tcam_get_size(struct niu *np)
3249 {
3250         /* One entry reserved for IP fragment rule */
3251         return np->clas.tcam_sz - 1;
3252 }
3253
3254 static u16 tcam_get_valid_entry_cnt(struct niu *np)
3255 {
3256         /* One entry reserved for IP fragment rule */
3257         return np->clas.tcam_valid_entries - 1;
3258 }
3259
3260 static void niu_rx_skb_append(struct sk_buff *skb, struct page *page,
3261                               u32 offset, u32 size, u32 truesize)
3262 {
3263         skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags, page, offset, size);
3264
3265         skb->len += size;
3266         skb->data_len += size;
3267         skb->truesize += truesize;
3268 }
3269
3270 static unsigned int niu_hash_rxaddr(struct rx_ring_info *rp, u64 a)
3271 {
3272         a >>= PAGE_SHIFT;
3273         a ^= (a >> ilog2(MAX_RBR_RING_SIZE));
3274
3275         return a & (MAX_RBR_RING_SIZE - 1);
3276 }
3277
3278 static struct page *niu_find_rxpage(struct rx_ring_info *rp, u64 addr,
3279                                     struct page ***link)
3280 {
3281         unsigned int h = niu_hash_rxaddr(rp, addr);
3282         struct page *p, **pp;
3283
3284         addr &= PAGE_MASK;
3285         pp = &rp->rxhash[h];
3286         for (; (p = *pp) != NULL; pp = (struct page **) &p->mapping) {
3287                 if (p->index == addr) {
3288                         *link = pp;
3289                         goto found;
3290                 }
3291         }
3292         BUG();
3293
3294 found:
3295         return p;
3296 }
3297
3298 static void niu_hash_page(struct rx_ring_info *rp, struct page *page, u64 base)
3299 {
3300         unsigned int h = niu_hash_rxaddr(rp, base);
3301
3302         page->index = base;
3303         page->mapping = (struct address_space *) rp->rxhash[h];
3304         rp->rxhash[h] = page;
3305 }
3306
3307 static int niu_rbr_add_page(struct niu *np, struct rx_ring_info *rp,
3308                             gfp_t mask, int start_index)
3309 {
3310         struct page *page;
3311         u64 addr;
3312         int i;
3313
3314         page = alloc_page(mask);
3315         if (!page)
3316                 return -ENOMEM;
3317
3318         addr = np->ops->map_page(np->device, page, 0,
3319                                  PAGE_SIZE, DMA_FROM_DEVICE);
3320         if (!addr) {
3321                 __free_page(page);
3322                 return -ENOMEM;
3323         }
3324
3325         niu_hash_page(rp, page, addr);
3326         if (rp->rbr_blocks_per_page > 1)
3327                 page_ref_add(page, rp->rbr_blocks_per_page - 1);
3328
3329         for (i = 0; i < rp->rbr_blocks_per_page; i++) {
3330                 __le32 *rbr = &rp->rbr[start_index + i];
3331
3332                 *rbr = cpu_to_le32(addr >> RBR_DESCR_ADDR_SHIFT);
3333                 addr += rp->rbr_block_size;
3334         }
3335
3336         return 0;
3337 }
3338
3339 static void niu_rbr_refill(struct niu *np, struct rx_ring_info *rp, gfp_t mask)
3340 {
3341         int index = rp->rbr_index;
3342
3343         rp->rbr_pending++;
3344         if ((rp->rbr_pending % rp->rbr_blocks_per_page) == 0) {
3345                 int err = niu_rbr_add_page(np, rp, mask, index);
3346
3347                 if (unlikely(err)) {
3348                         rp->rbr_pending--;
3349                         return;
3350                 }
3351
3352                 rp->rbr_index += rp->rbr_blocks_per_page;
3353                 BUG_ON(rp->rbr_index > rp->rbr_table_size);
3354                 if (rp->rbr_index == rp->rbr_table_size)
3355                         rp->rbr_index = 0;
3356
3357                 if (rp->rbr_pending >= rp->rbr_kick_thresh) {
3358                         nw64(RBR_KICK(rp->rx_channel), rp->rbr_pending);
3359                         rp->rbr_pending = 0;
3360                 }
3361         }
3362 }
3363
3364 static int niu_rx_pkt_ignore(struct niu *np, struct rx_ring_info *rp)
3365 {
3366         unsigned int index = rp->rcr_index;
3367         int num_rcr = 0;
3368
3369         rp->rx_dropped++;
3370         while (1) {
3371                 struct page *page, **link;
3372                 u64 addr, val;
3373                 u32 rcr_size;
3374
3375                 num_rcr++;
3376
3377                 val = le64_to_cpup(&rp->rcr[index]);
3378                 addr = (val & RCR_ENTRY_PKT_BUF_ADDR) <<
3379                         RCR_ENTRY_PKT_BUF_ADDR_SHIFT;
3380                 page = niu_find_rxpage(rp, addr, &link);
3381
3382                 rcr_size = rp->rbr_sizes[(val & RCR_ENTRY_PKTBUFSZ) >>
3383                                          RCR_ENTRY_PKTBUFSZ_SHIFT];
3384                 if ((page->index + PAGE_SIZE) - rcr_size == addr) {
3385                         *link = (struct page *) page->mapping;
3386                         np->ops->unmap_page(np->device, page->index,
3387                                             PAGE_SIZE, DMA_FROM_DEVICE);
3388                         page->index = 0;
3389                         page->mapping = NULL;
3390                         __free_page(page);
3391                         rp->rbr_refill_pending++;
3392                 }
3393
3394                 index = NEXT_RCR(rp, index);
3395                 if (!(val & RCR_ENTRY_MULTI))
3396                         break;
3397
3398         }
3399         rp->rcr_index = index;
3400
3401         return num_rcr;
3402 }
3403
3404 static int niu_process_rx_pkt(struct napi_struct *napi, struct niu *np,
3405                               struct rx_ring_info *rp)
3406 {
3407         unsigned int index = rp->rcr_index;
3408         struct rx_pkt_hdr1 *rh;
3409         struct sk_buff *skb;
3410         int len, num_rcr;
3411
3412         skb = netdev_alloc_skb(np->dev, RX_SKB_ALLOC_SIZE);
3413         if (unlikely(!skb))
3414                 return niu_rx_pkt_ignore(np, rp);
3415
3416         num_rcr = 0;
3417         while (1) {
3418                 struct page *page, **link;
3419                 u32 rcr_size, append_size;
3420                 u64 addr, val, off;
3421
3422                 num_rcr++;
3423
3424                 val = le64_to_cpup(&rp->rcr[index]);
3425
3426                 len = (val & RCR_ENTRY_L2_LEN) >>
3427                         RCR_ENTRY_L2_LEN_SHIFT;
3428                 append_size = len + ETH_HLEN + ETH_FCS_LEN;
3429
3430                 addr = (val & RCR_ENTRY_PKT_BUF_ADDR) <<
3431                         RCR_ENTRY_PKT_BUF_ADDR_SHIFT;
3432                 page = niu_find_rxpage(rp, addr, &link);
3433
3434                 rcr_size = rp->rbr_sizes[(val & RCR_ENTRY_PKTBUFSZ) >>
3435                                          RCR_ENTRY_PKTBUFSZ_SHIFT];
3436
3437                 off = addr & ~PAGE_MASK;
3438                 if (num_rcr == 1) {
3439                         int ptype;
3440
3441                         ptype = (val >> RCR_ENTRY_PKT_TYPE_SHIFT);
3442                         if ((ptype == RCR_PKT_TYPE_TCP ||
3443                              ptype == RCR_PKT_TYPE_UDP) &&
3444                             !(val & (RCR_ENTRY_NOPORT |
3445                                      RCR_ENTRY_ERROR)))
3446                                 skb->ip_summed = CHECKSUM_UNNECESSARY;
3447                         else
3448                                 skb_checksum_none_assert(skb);
3449                 } else if (!(val & RCR_ENTRY_MULTI))
3450                         append_size = append_size - skb->len;
3451
3452                 niu_rx_skb_append(skb, page, off, append_size, rcr_size);
3453                 if ((page->index + rp->rbr_block_size) - rcr_size == addr) {
3454                         *link = (struct page *) page->mapping;
3455                         np->ops->unmap_page(np->device, page->index,
3456                                             PAGE_SIZE, DMA_FROM_DEVICE);
3457                         page->index = 0;
3458                         page->mapping = NULL;
3459                         rp->rbr_refill_pending++;
3460                 } else
3461                         get_page(page);
3462
3463                 index = NEXT_RCR(rp, index);
3464                 if (!(val & RCR_ENTRY_MULTI))
3465                         break;
3466
3467         }
3468         rp->rcr_index = index;
3469
3470         len += sizeof(*rh);
3471         len = min_t(int, len, sizeof(*rh) + VLAN_ETH_HLEN);
3472         __pskb_pull_tail(skb, len);
3473
3474         rh = (struct rx_pkt_hdr1 *) skb->data;
3475         if (np->dev->features & NETIF_F_RXHASH)
3476                 skb_set_hash(skb,
3477                              ((u32)rh->hashval2_0 << 24 |
3478                               (u32)rh->hashval2_1 << 16 |
3479                               (u32)rh->hashval1_1 << 8 |
3480                               (u32)rh->hashval1_2 << 0),
3481                              PKT_HASH_TYPE_L3);
3482         skb_pull(skb, sizeof(*rh));
3483
3484         rp->rx_packets++;
3485         rp->rx_bytes += skb->len;
3486
3487         skb->protocol = eth_type_trans(skb, np->dev);
3488         skb_record_rx_queue(skb, rp->rx_channel);
3489         napi_gro_receive(napi, skb);
3490
3491         return num_rcr;
3492 }
3493
3494 static int niu_rbr_fill(struct niu *np, struct rx_ring_info *rp, gfp_t mask)
3495 {
3496         int blocks_per_page = rp->rbr_blocks_per_page;
3497         int err, index = rp->rbr_index;
3498
3499         err = 0;
3500         while (index < (rp->rbr_table_size - blocks_per_page)) {
3501                 err = niu_rbr_add_page(np, rp, mask, index);
3502                 if (unlikely(err))
3503                         break;
3504
3505                 index += blocks_per_page;
3506         }
3507
3508         rp->rbr_index = index;
3509         return err;
3510 }
3511
3512 static void niu_rbr_free(struct niu *np, struct rx_ring_info *rp)
3513 {
3514         int i;
3515
3516         for (i = 0; i < MAX_RBR_RING_SIZE; i++) {
3517                 struct page *page;
3518
3519                 page = rp->rxhash[i];
3520                 while (page) {
3521                         struct page *next = (struct page *) page->mapping;
3522                         u64 base = page->index;
3523
3524                         np->ops->unmap_page(np->device, base, PAGE_SIZE,
3525                                             DMA_FROM_DEVICE);
3526                         page->index = 0;
3527                         page->mapping = NULL;
3528
3529                         __free_page(page);
3530
3531                         page = next;
3532                 }
3533         }
3534
3535         for (i = 0; i < rp->rbr_table_size; i++)
3536                 rp->rbr[i] = cpu_to_le32(0);
3537         rp->rbr_index = 0;
3538 }
3539
3540 static int release_tx_packet(struct niu *np, struct tx_ring_info *rp, int idx)
3541 {
3542         struct tx_buff_info *tb = &rp->tx_buffs[idx];
3543         struct sk_buff *skb = tb->skb;
3544         struct tx_pkt_hdr *tp;
3545         u64 tx_flags;
3546         int i, len;
3547
3548         tp = (struct tx_pkt_hdr *) skb->data;
3549         tx_flags = le64_to_cpup(&tp->flags);
3550
3551         rp->tx_packets++;
3552         rp->tx_bytes += (((tx_flags & TXHDR_LEN) >> TXHDR_LEN_SHIFT) -
3553                          ((tx_flags & TXHDR_PAD) / 2));
3554
3555         len = skb_headlen(skb);
3556         np->ops->unmap_single(np->device, tb->mapping,
3557                               len, DMA_TO_DEVICE);
3558
3559         if (le64_to_cpu(rp->descr[idx]) & TX_DESC_MARK)
3560                 rp->mark_pending--;
3561
3562         tb->skb = NULL;
3563         do {
3564                 idx = NEXT_TX(rp, idx);
3565                 len -= MAX_TX_DESC_LEN;
3566         } while (len > 0);
3567
3568         for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
3569                 tb = &rp->tx_buffs[idx];
3570                 BUG_ON(tb->skb != NULL);
3571                 np->ops->unmap_page(np->device, tb->mapping,
3572                                     skb_frag_size(&skb_shinfo(skb)->frags[i]),
3573                                     DMA_TO_DEVICE);
3574                 idx = NEXT_TX(rp, idx);
3575         }
3576
3577         dev_kfree_skb(skb);
3578
3579         return idx;
3580 }
3581
3582 #define NIU_TX_WAKEUP_THRESH(rp)                ((rp)->pending / 4)
3583
3584 static void niu_tx_work(struct niu *np, struct tx_ring_info *rp)
3585 {
3586         struct netdev_queue *txq;
3587         u16 pkt_cnt, tmp;
3588         int cons, index;
3589         u64 cs;
3590
3591         index = (rp - np->tx_rings);
3592         txq = netdev_get_tx_queue(np->dev, index);
3593
3594         cs = rp->tx_cs;
3595         if (unlikely(!(cs & (TX_CS_MK | TX_CS_MMK))))
3596                 goto out;
3597
3598         tmp = pkt_cnt = (cs & TX_CS_PKT_CNT) >> TX_CS_PKT_CNT_SHIFT;
3599         pkt_cnt = (pkt_cnt - rp->last_pkt_cnt) &
3600                 (TX_CS_PKT_CNT >> TX_CS_PKT_CNT_SHIFT);
3601
3602         rp->last_pkt_cnt = tmp;
3603
3604         cons = rp->cons;
3605
3606         netif_printk(np, tx_done, KERN_DEBUG, np->dev,
3607                      "%s() pkt_cnt[%u] cons[%d]\n", __func__, pkt_cnt, cons);
3608
3609         while (pkt_cnt--)
3610                 cons = release_tx_packet(np, rp, cons);
3611
3612         rp->cons = cons;
3613         smp_mb();
3614
3615 out:
3616         if (unlikely(netif_tx_queue_stopped(txq) &&
3617                      (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp)))) {
3618                 __netif_tx_lock(txq, smp_processor_id());
3619                 if (netif_tx_queue_stopped(txq) &&
3620                     (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp)))
3621                         netif_tx_wake_queue(txq);
3622                 __netif_tx_unlock(txq);
3623         }
3624 }
3625
3626 static inline void niu_sync_rx_discard_stats(struct niu *np,
3627                                              struct rx_ring_info *rp,
3628                                              const int limit)
3629 {
3630         /* This elaborate scheme is needed for reading the RX discard
3631          * counters, as they are only 16-bit and can overflow quickly,
3632          * and because the overflow indication bit is not usable as
3633          * the counter value does not wrap, but remains at max value
3634          * 0xFFFF.
3635          *
3636          * In theory and in practice counters can be lost in between
3637          * reading nr64() and clearing the counter nw64().  For this
3638          * reason, the number of counter clearings nw64() is
3639          * limited/reduced though the limit parameter.
3640          */
3641         int rx_channel = rp->rx_channel;
3642         u32 misc, wred;
3643
3644         /* RXMISC (Receive Miscellaneous Discard Count), covers the
3645          * following discard events: IPP (Input Port Process),
3646          * FFLP/TCAM, Full RCR (Receive Completion Ring) RBR (Receive
3647          * Block Ring) prefetch buffer is empty.
3648          */
3649         misc = nr64(RXMISC(rx_channel));
3650         if (unlikely((misc & RXMISC_COUNT) > limit)) {
3651                 nw64(RXMISC(rx_channel), 0);
3652                 rp->rx_errors += misc & RXMISC_COUNT;
3653
3654                 if (unlikely(misc & RXMISC_OFLOW))
3655                         dev_err(np->device, "rx-%d: Counter overflow RXMISC discard\n",
3656                                 rx_channel);
3657
3658                 netif_printk(np, rx_err, KERN_DEBUG, np->dev,
3659                              "rx-%d: MISC drop=%u over=%u\n",
3660                              rx_channel, misc, misc-limit);
3661         }
3662
3663         /* WRED (Weighted Random Early Discard) by hardware */
3664         wred = nr64(RED_DIS_CNT(rx_channel));
3665         if (unlikely((wred & RED_DIS_CNT_COUNT) > limit)) {
3666                 nw64(RED_DIS_CNT(rx_channel), 0);
3667                 rp->rx_dropped += wred & RED_DIS_CNT_COUNT;
3668
3669                 if (unlikely(wred & RED_DIS_CNT_OFLOW))
3670                         dev_err(np->device, "rx-%d: Counter overflow WRED discard\n", rx_channel);
3671
3672                 netif_printk(np, rx_err, KERN_DEBUG, np->dev,
3673                              "rx-%d: WRED drop=%u over=%u\n",
3674                              rx_channel, wred, wred-limit);
3675         }
3676 }
3677
3678 static int niu_rx_work(struct napi_struct *napi, struct niu *np,
3679                        struct rx_ring_info *rp, int budget)
3680 {
3681         int qlen, rcr_done = 0, work_done = 0;
3682         struct rxdma_mailbox *mbox = rp->mbox;
3683         u64 stat;
3684
3685 #if 1
3686         stat = nr64(RX_DMA_CTL_STAT(rp->rx_channel));
3687         qlen = nr64(RCRSTAT_A(rp->rx_channel)) & RCRSTAT_A_QLEN;
3688 #else
3689         stat = le64_to_cpup(&mbox->rx_dma_ctl_stat);
3690         qlen = (le64_to_cpup(&mbox->rcrstat_a) & RCRSTAT_A_QLEN);
3691 #endif
3692         mbox->rx_dma_ctl_stat = 0;
3693         mbox->rcrstat_a = 0;
3694
3695         netif_printk(np, rx_status, KERN_DEBUG, np->dev,
3696                      "%s(chan[%d]), stat[%llx] qlen=%d\n",
3697                      __func__, rp->rx_channel, (unsigned long long)stat, qlen);
3698
3699         rcr_done = work_done = 0;
3700         qlen = min(qlen, budget);
3701         while (work_done < qlen) {
3702                 rcr_done += niu_process_rx_pkt(napi, np, rp);
3703                 work_done++;
3704         }
3705
3706         if (rp->rbr_refill_pending >= rp->rbr_kick_thresh) {
3707                 unsigned int i;
3708
3709                 for (i = 0; i < rp->rbr_refill_pending; i++)
3710                         niu_rbr_refill(np, rp, GFP_ATOMIC);
3711                 rp->rbr_refill_pending = 0;
3712         }
3713
3714         stat = (RX_DMA_CTL_STAT_MEX |
3715                 ((u64)work_done << RX_DMA_CTL_STAT_PKTREAD_SHIFT) |
3716                 ((u64)rcr_done << RX_DMA_CTL_STAT_PTRREAD_SHIFT));
3717
3718         nw64(RX_DMA_CTL_STAT(rp->rx_channel), stat);
3719
3720         /* Only sync discards stats when qlen indicate potential for drops */
3721         if (qlen > 10)
3722                 niu_sync_rx_discard_stats(np, rp, 0x7FFF);
3723
3724         return work_done;
3725 }
3726
3727 static int niu_poll_core(struct niu *np, struct niu_ldg *lp, int budget)
3728 {
3729         u64 v0 = lp->v0;
3730         u32 tx_vec = (v0 >> 32);
3731         u32 rx_vec = (v0 & 0xffffffff);
3732         int i, work_done = 0;
3733
3734         netif_printk(np, intr, KERN_DEBUG, np->dev,
3735                      "%s() v0[%016llx]\n", __func__, (unsigned long long)v0);
3736
3737         for (i = 0; i < np->num_tx_rings; i++) {
3738                 struct tx_ring_info *rp = &np->tx_rings[i];
3739                 if (tx_vec & (1 << rp->tx_channel))
3740                         niu_tx_work(np, rp);
3741                 nw64(LD_IM0(LDN_TXDMA(rp->tx_channel)), 0);
3742         }
3743
3744         for (i = 0; i < np->num_rx_rings; i++) {
3745                 struct rx_ring_info *rp = &np->rx_rings[i];
3746
3747                 if (rx_vec & (1 << rp->rx_channel)) {
3748                         int this_work_done;
3749
3750                         this_work_done = niu_rx_work(&lp->napi, np, rp,
3751                                                      budget);
3752
3753                         budget -= this_work_done;
3754                         work_done += this_work_done;
3755                 }
3756                 nw64(LD_IM0(LDN_RXDMA(rp->rx_channel)), 0);
3757         }
3758
3759         return work_done;
3760 }
3761
3762 static int niu_poll(struct napi_struct *napi, int budget)
3763 {
3764         struct niu_ldg *lp = container_of(napi, struct niu_ldg, napi);
3765         struct niu *np = lp->np;
3766         int work_done;
3767
3768         work_done = niu_poll_core(np, lp, budget);
3769
3770         if (work_done < budget) {
3771                 napi_complete_done(napi, work_done);
3772                 niu_ldg_rearm(np, lp, 1);
3773         }
3774         return work_done;
3775 }
3776
3777 static void niu_log_rxchan_errors(struct niu *np, struct rx_ring_info *rp,
3778                                   u64 stat)
3779 {
3780         netdev_err(np->dev, "RX channel %u errors ( ", rp->rx_channel);
3781
3782         if (stat & RX_DMA_CTL_STAT_RBR_TMOUT)
3783                 pr_cont("RBR_TMOUT ");
3784         if (stat & RX_DMA_CTL_STAT_RSP_CNT_ERR)
3785                 pr_cont("RSP_CNT ");
3786         if (stat & RX_DMA_CTL_STAT_BYTE_EN_BUS)
3787                 pr_cont("BYTE_EN_BUS ");
3788         if (stat & RX_DMA_CTL_STAT_RSP_DAT_ERR)
3789                 pr_cont("RSP_DAT ");
3790         if (stat & RX_DMA_CTL_STAT_RCR_ACK_ERR)
3791                 pr_cont("RCR_ACK ");
3792         if (stat & RX_DMA_CTL_STAT_RCR_SHA_PAR)
3793                 pr_cont("RCR_SHA_PAR ");
3794         if (stat & RX_DMA_CTL_STAT_RBR_PRE_PAR)
3795                 pr_cont("RBR_PRE_PAR ");
3796         if (stat & RX_DMA_CTL_STAT_CONFIG_ERR)
3797                 pr_cont("CONFIG ");
3798         if (stat & RX_DMA_CTL_STAT_RCRINCON)
3799                 pr_cont("RCRINCON ");
3800         if (stat & RX_DMA_CTL_STAT_RCRFULL)
3801                 pr_cont("RCRFULL ");
3802         if (stat & RX_DMA_CTL_STAT_RBRFULL)
3803                 pr_cont("RBRFULL ");
3804         if (stat & RX_DMA_CTL_STAT_RBRLOGPAGE)
3805                 pr_cont("RBRLOGPAGE ");
3806         if (stat & RX_DMA_CTL_STAT_CFIGLOGPAGE)
3807                 pr_cont("CFIGLOGPAGE ");
3808         if (stat & RX_DMA_CTL_STAT_DC_FIFO_ERR)
3809                 pr_cont("DC_FIDO ");
3810
3811         pr_cont(")\n");
3812 }
3813
3814 static int niu_rx_error(struct niu *np, struct rx_ring_info *rp)
3815 {
3816         u64 stat = nr64(RX_DMA_CTL_STAT(rp->rx_channel));
3817         int err = 0;
3818
3819
3820         if (stat & (RX_DMA_CTL_STAT_CHAN_FATAL |
3821                     RX_DMA_CTL_STAT_PORT_FATAL))
3822                 err = -EINVAL;
3823
3824         if (err) {
3825                 netdev_err(np->dev, "RX channel %u error, stat[%llx]\n",
3826                            rp->rx_channel,
3827                            (unsigned long long) stat);
3828
3829                 niu_log_rxchan_errors(np, rp, stat);
3830         }
3831
3832         nw64(RX_DMA_CTL_STAT(rp->rx_channel),
3833              stat & RX_DMA_CTL_WRITE_CLEAR_ERRS);
3834
3835         return err;
3836 }
3837
3838 static void niu_log_txchan_errors(struct niu *np, struct tx_ring_info *rp,
3839                                   u64 cs)
3840 {
3841         netdev_err(np->dev, "TX channel %u errors ( ", rp->tx_channel);
3842
3843         if (cs & TX_CS_MBOX_ERR)
3844                 pr_cont("MBOX ");
3845         if (cs & TX_CS_PKT_SIZE_ERR)
3846                 pr_cont("PKT_SIZE ");
3847         if (cs & TX_CS_TX_RING_OFLOW)
3848                 pr_cont("TX_RING_OFLOW ");
3849         if (cs & TX_CS_PREF_BUF_PAR_ERR)
3850                 pr_cont("PREF_BUF_PAR ");
3851         if (cs & TX_CS_NACK_PREF)
3852                 pr_cont("NACK_PREF ");
3853         if (cs & TX_CS_NACK_PKT_RD)
3854                 pr_cont("NACK_PKT_RD ");
3855         if (cs & TX_CS_CONF_PART_ERR)
3856                 pr_cont("CONF_PART ");
3857         if (cs & TX_CS_PKT_PRT_ERR)
3858                 pr_cont("PKT_PTR ");
3859
3860         pr_cont(")\n");
3861 }
3862
3863 static int niu_tx_error(struct niu *np, struct tx_ring_info *rp)
3864 {
3865         u64 cs, logh, logl;
3866
3867         cs = nr64(TX_CS(rp->tx_channel));
3868         logh = nr64(TX_RNG_ERR_LOGH(rp->tx_channel));
3869         logl = nr64(TX_RNG_ERR_LOGL(rp->tx_channel));
3870
3871         netdev_err(np->dev, "TX channel %u error, cs[%llx] logh[%llx] logl[%llx]\n",
3872                    rp->tx_channel,
3873                    (unsigned long long)cs,
3874                    (unsigned long long)logh,
3875                    (unsigned long long)logl);
3876
3877         niu_log_txchan_errors(np, rp, cs);
3878
3879         return -ENODEV;
3880 }
3881
3882 static int niu_mif_interrupt(struct niu *np)
3883 {
3884         u64 mif_status = nr64(MIF_STATUS);
3885         int phy_mdint = 0;
3886
3887         if (np->flags & NIU_FLAGS_XMAC) {
3888                 u64 xrxmac_stat = nr64_mac(XRXMAC_STATUS);
3889
3890                 if (xrxmac_stat & XRXMAC_STATUS_PHY_MDINT)
3891                         phy_mdint = 1;
3892         }
3893
3894         netdev_err(np->dev, "MIF interrupt, stat[%llx] phy_mdint(%d)\n",
3895                    (unsigned long long)mif_status, phy_mdint);
3896
3897         return -ENODEV;
3898 }
3899
3900 static void niu_xmac_interrupt(struct niu *np)
3901 {
3902         struct niu_xmac_stats *mp = &np->mac_stats.xmac;
3903         u64 val;
3904
3905         val = nr64_mac(XTXMAC_STATUS);
3906         if (val & XTXMAC_STATUS_FRAME_CNT_EXP)
3907                 mp->tx_frames += TXMAC_FRM_CNT_COUNT;
3908         if (val & XTXMAC_STATUS_BYTE_CNT_EXP)
3909                 mp->tx_bytes += TXMAC_BYTE_CNT_COUNT;
3910         if (val & XTXMAC_STATUS_TXFIFO_XFR_ERR)
3911                 mp->tx_fifo_errors++;
3912         if (val & XTXMAC_STATUS_TXMAC_OFLOW)
3913                 mp->tx_overflow_errors++;
3914         if (val & XTXMAC_STATUS_MAX_PSIZE_ERR)
3915                 mp->tx_max_pkt_size_errors++;
3916         if (val & XTXMAC_STATUS_TXMAC_UFLOW)
3917                 mp->tx_underflow_errors++;
3918
3919         val = nr64_mac(XRXMAC_STATUS);
3920         if (val & XRXMAC_STATUS_LCL_FLT_STATUS)
3921                 mp->rx_local_faults++;
3922         if (val & XRXMAC_STATUS_RFLT_DET)
3923                 mp->rx_remote_faults++;
3924         if (val & XRXMAC_STATUS_LFLT_CNT_EXP)
3925                 mp->rx_link_faults += LINK_FAULT_CNT_COUNT;
3926         if (val & XRXMAC_STATUS_ALIGNERR_CNT_EXP)
3927                 mp->rx_align_errors += RXMAC_ALIGN_ERR_CNT_COUNT;
3928         if (val & XRXMAC_STATUS_RXFRAG_CNT_EXP)
3929                 mp->rx_frags += RXMAC_FRAG_CNT_COUNT;
3930         if (val & XRXMAC_STATUS_RXMULTF_CNT_EXP)
3931                 mp->rx_mcasts += RXMAC_MC_FRM_CNT_COUNT;
3932         if (val & XRXMAC_STATUS_RXBCAST_CNT_EXP)
3933                 mp->rx_bcasts += RXMAC_BC_FRM_CNT_COUNT;
3934         if (val & XRXMAC_STATUS_RXHIST1_CNT_EXP)
3935                 mp->rx_hist_cnt1 += RXMAC_HIST_CNT1_COUNT;
3936         if (val & XRXMAC_STATUS_RXHIST2_CNT_EXP)
3937                 mp->rx_hist_cnt2 += RXMAC_HIST_CNT2_COUNT;
3938         if (val & XRXMAC_STATUS_RXHIST3_CNT_EXP)
3939                 mp->rx_hist_cnt3 += RXMAC_HIST_CNT3_COUNT;
3940         if (val & XRXMAC_STATUS_RXHIST4_CNT_EXP)
3941                 mp->rx_hist_cnt4 += RXMAC_HIST_CNT4_COUNT;
3942         if (val & XRXMAC_STATUS_RXHIST5_CNT_EXP)
3943                 mp->rx_hist_cnt5 += RXMAC_HIST_CNT5_COUNT;
3944         if (val & XRXMAC_STATUS_RXHIST6_CNT_EXP)
3945                 mp->rx_hist_cnt6 += RXMAC_HIST_CNT6_COUNT;
3946         if (val & XRXMAC_STATUS_RXHIST7_CNT_EXP)
3947                 mp->rx_hist_cnt7 += RXMAC_HIST_CNT7_COUNT;
3948         if (val & XRXMAC_STATUS_RXOCTET_CNT_EXP)
3949                 mp->rx_octets += RXMAC_BT_CNT_COUNT;
3950         if (val & XRXMAC_STATUS_CVIOLERR_CNT_EXP)
3951                 mp->rx_code_violations += RXMAC_CD_VIO_CNT_COUNT;
3952         if (val & XRXMAC_STATUS_LENERR_CNT_EXP)
3953                 mp->rx_len_errors += RXMAC_MPSZER_CNT_COUNT;
3954         if (val & XRXMAC_STATUS_CRCERR_CNT_EXP)
3955                 mp->rx_crc_errors += RXMAC_CRC_ER_CNT_COUNT;
3956         if (val & XRXMAC_STATUS_RXUFLOW)
3957                 mp->rx_underflows++;
3958         if (val & XRXMAC_STATUS_RXOFLOW)
3959                 mp->rx_overflows++;
3960
3961         val = nr64_mac(XMAC_FC_STAT);
3962         if (val & XMAC_FC_STAT_TX_MAC_NPAUSE)
3963                 mp->pause_off_state++;
3964         if (val & XMAC_FC_STAT_TX_MAC_PAUSE)
3965                 mp->pause_on_state++;
3966         if (val & XMAC_FC_STAT_RX_MAC_RPAUSE)
3967                 mp->pause_received++;
3968 }
3969
3970 static void niu_bmac_interrupt(struct niu *np)
3971 {
3972         struct niu_bmac_stats *mp = &np->mac_stats.bmac;
3973         u64 val;
3974
3975         val = nr64_mac(BTXMAC_STATUS);
3976         if (val & BTXMAC_STATUS_UNDERRUN)
3977                 mp->tx_underflow_errors++;
3978         if (val & BTXMAC_STATUS_MAX_PKT_ERR)
3979                 mp->tx_max_pkt_size_errors++;
3980         if (val & BTXMAC_STATUS_BYTE_CNT_EXP)
3981                 mp->tx_bytes += BTXMAC_BYTE_CNT_COUNT;
3982         if (val & BTXMAC_STATUS_FRAME_CNT_EXP)
3983                 mp->tx_frames += BTXMAC_FRM_CNT_COUNT;
3984
3985         val = nr64_mac(BRXMAC_STATUS);
3986         if (val & BRXMAC_STATUS_OVERFLOW)
3987                 mp->rx_overflows++;
3988         if (val & BRXMAC_STATUS_FRAME_CNT_EXP)
3989                 mp->rx_frames += BRXMAC_FRAME_CNT_COUNT;
3990         if (val & BRXMAC_STATUS_ALIGN_ERR_EXP)
3991                 mp->rx_align_errors += BRXMAC_ALIGN_ERR_CNT_COUNT;
3992         if (val & BRXMAC_STATUS_CRC_ERR_EXP)
3993                 mp->rx_crc_errors += BRXMAC_ALIGN_ERR_CNT_COUNT;
3994         if (val & BRXMAC_STATUS_LEN_ERR_EXP)
3995                 mp->rx_len_errors += BRXMAC_CODE_VIOL_ERR_CNT_COUNT;
3996
3997         val = nr64_mac(BMAC_CTRL_STATUS);
3998         if (val & BMAC_CTRL_STATUS_NOPAUSE)
3999                 mp->pause_off_state++;
4000         if (val & BMAC_CTRL_STATUS_PAUSE)
4001                 mp->pause_on_state++;
4002         if (val & BMAC_CTRL_STATUS_PAUSE_RECV)
4003                 mp->pause_received++;
4004 }
4005
4006 static int niu_mac_interrupt(struct niu *np)
4007 {
4008         if (np->flags & NIU_FLAGS_XMAC)
4009                 niu_xmac_interrupt(np);
4010         else
4011                 niu_bmac_interrupt(np);
4012
4013         return 0;
4014 }
4015
4016 static void niu_log_device_error(struct niu *np, u64 stat)
4017 {
4018         netdev_err(np->dev, "Core device errors ( ");
4019
4020         if (stat & SYS_ERR_MASK_META2)
4021                 pr_cont("META2 ");
4022         if (stat & SYS_ERR_MASK_META1)
4023                 pr_cont("META1 ");
4024         if (stat & SYS_ERR_MASK_PEU)
4025                 pr_cont("PEU ");
4026         if (stat & SYS_ERR_MASK_TXC)
4027                 pr_cont("TXC ");
4028         if (stat & SYS_ERR_MASK_RDMC)
4029                 pr_cont("RDMC ");
4030         if (stat & SYS_ERR_MASK_TDMC)
4031                 pr_cont("TDMC ");
4032         if (stat & SYS_ERR_MASK_ZCP)
4033                 pr_cont("ZCP ");
4034         if (stat & SYS_ERR_MASK_FFLP)
4035                 pr_cont("FFLP ");
4036         if (stat & SYS_ERR_MASK_IPP)
4037                 pr_cont("IPP ");
4038         if (stat & SYS_ERR_MASK_MAC)
4039                 pr_cont("MAC ");
4040         if (stat & SYS_ERR_MASK_SMX)
4041                 pr_cont("SMX ");
4042
4043         pr_cont(")\n");
4044 }
4045
4046 static int niu_device_error(struct niu *np)
4047 {
4048         u64 stat = nr64(SYS_ERR_STAT);
4049
4050         netdev_err(np->dev, "Core device error, stat[%llx]\n",
4051                    (unsigned long long)stat);
4052
4053         niu_log_device_error(np, stat);
4054
4055         return -ENODEV;
4056 }
4057
4058 static int niu_slowpath_interrupt(struct niu *np, struct niu_ldg *lp,
4059                               u64 v0, u64 v1, u64 v2)
4060 {
4061
4062         int i, err = 0;
4063
4064         lp->v0 = v0;
4065         lp->v1 = v1;
4066         lp->v2 = v2;
4067
4068         if (v1 & 0x00000000ffffffffULL) {
4069                 u32 rx_vec = (v1 & 0xffffffff);
4070
4071                 for (i = 0; i < np->num_rx_rings; i++) {
4072                         struct rx_ring_info *rp = &np->rx_rings[i];
4073
4074                         if (rx_vec & (1 << rp->rx_channel)) {
4075                                 int r = niu_rx_error(np, rp);
4076                                 if (r) {
4077                                         err = r;
4078                                 } else {
4079                                         if (!v0)
4080                                                 nw64(RX_DMA_CTL_STAT(rp->rx_channel),
4081                                                      RX_DMA_CTL_STAT_MEX);
4082                                 }
4083                         }
4084                 }
4085         }
4086         if (v1 & 0x7fffffff00000000ULL) {
4087                 u32 tx_vec = (v1 >> 32) & 0x7fffffff;
4088
4089                 for (i = 0; i < np->num_tx_rings; i++) {
4090                         struct tx_ring_info *rp = &np->tx_rings[i];
4091
4092                         if (tx_vec & (1 << rp->tx_channel)) {
4093                                 int r = niu_tx_error(np, rp);
4094                                 if (r)
4095                                         err = r;
4096                         }
4097                 }
4098         }
4099         if ((v0 | v1) & 0x8000000000000000ULL) {
4100                 int r = niu_mif_interrupt(np);
4101                 if (r)
4102                         err = r;
4103         }
4104         if (v2) {
4105                 if (v2 & 0x01ef) {
4106                         int r = niu_mac_interrupt(np);
4107                         if (r)
4108                                 err = r;
4109                 }
4110                 if (v2 & 0x0210) {
4111                         int r = niu_device_error(np);
4112                         if (r)
4113                                 err = r;
4114                 }
4115         }
4116
4117         if (err)
4118                 niu_enable_interrupts(np, 0);
4119
4120         return err;
4121 }
4122
4123 static void niu_rxchan_intr(struct niu *np, struct rx_ring_info *rp,
4124                             int ldn)
4125 {
4126         struct rxdma_mailbox *mbox = rp->mbox;
4127         u64 stat_write, stat = le64_to_cpup(&mbox->rx_dma_ctl_stat);
4128
4129         stat_write = (RX_DMA_CTL_STAT_RCRTHRES |
4130                       RX_DMA_CTL_STAT_RCRTO);
4131         nw64(RX_DMA_CTL_STAT(rp->rx_channel), stat_write);
4132
4133         netif_printk(np, intr, KERN_DEBUG, np->dev,
4134                      "%s() stat[%llx]\n", __func__, (unsigned long long)stat);
4135 }
4136
4137 static void niu_txchan_intr(struct niu *np, struct tx_ring_info *rp,
4138                             int ldn)
4139 {
4140         rp->tx_cs = nr64(TX_CS(rp->tx_channel));
4141
4142         netif_printk(np, intr, KERN_DEBUG, np->dev,
4143                      "%s() cs[%llx]\n", __func__, (unsigned long long)rp->tx_cs);
4144 }
4145
4146 static void __niu_fastpath_interrupt(struct niu *np, int ldg, u64 v0)
4147 {
4148         struct niu_parent *parent = np->parent;
4149         u32 rx_vec, tx_vec;
4150         int i;
4151
4152         tx_vec = (v0 >> 32);
4153         rx_vec = (v0 & 0xffffffff);
4154
4155         for (i = 0; i < np->num_rx_rings; i++) {
4156                 struct rx_ring_info *rp = &np->rx_rings[i];
4157                 int ldn = LDN_RXDMA(rp->rx_channel);
4158
4159                 if (parent->ldg_map[ldn] != ldg)
4160                         continue;
4161
4162                 nw64(LD_IM0(ldn), LD_IM0_MASK);
4163                 if (rx_vec & (1 << rp->rx_channel))
4164                         niu_rxchan_intr(np, rp, ldn);
4165         }
4166
4167         for (i = 0; i < np->num_tx_rings; i++) {
4168                 struct tx_ring_info *rp = &np->tx_rings[i];
4169                 int ldn = LDN_TXDMA(rp->tx_channel);
4170
4171                 if (parent->ldg_map[ldn] != ldg)
4172                         continue;
4173
4174                 nw64(LD_IM0(ldn), LD_IM0_MASK);
4175                 if (tx_vec & (1 << rp->tx_channel))
4176                         niu_txchan_intr(np, rp, ldn);
4177         }
4178 }
4179
4180 static void niu_schedule_napi(struct niu *np, struct niu_ldg *lp,
4181                               u64 v0, u64 v1, u64 v2)
4182 {
4183         if (likely(napi_schedule_prep(&lp->napi))) {
4184                 lp->v0 = v0;
4185                 lp->v1 = v1;
4186                 lp->v2 = v2;
4187                 __niu_fastpath_interrupt(np, lp->ldg_num, v0);
4188                 __napi_schedule(&lp->napi);
4189         }
4190 }
4191
4192 static irqreturn_t niu_interrupt(int irq, void *dev_id)
4193 {
4194         struct niu_ldg *lp = dev_id;
4195         struct niu *np = lp->np;
4196         int ldg = lp->ldg_num;
4197         unsigned long flags;
4198         u64 v0, v1, v2;
4199
4200         if (netif_msg_intr(np))
4201                 printk(KERN_DEBUG KBUILD_MODNAME ": " "%s() ldg[%p](%d)",
4202                        __func__, lp, ldg);
4203
4204         spin_lock_irqsave(&np->lock, flags);
4205
4206         v0 = nr64(LDSV0(ldg));
4207         v1 = nr64(LDSV1(ldg));
4208         v2 = nr64(LDSV2(ldg));
4209
4210         if (netif_msg_intr(np))
4211                 pr_cont(" v0[%llx] v1[%llx] v2[%llx]\n",
4212                        (unsigned long long) v0,
4213                        (unsigned long long) v1,
4214                        (unsigned long long) v2);
4215
4216         if (unlikely(!v0 && !v1 && !v2)) {
4217                 spin_unlock_irqrestore(&np->lock, flags);
4218                 return IRQ_NONE;
4219         }
4220
4221         if (unlikely((v0 & ((u64)1 << LDN_MIF)) || v1 || v2)) {
4222                 int err = niu_slowpath_interrupt(np, lp, v0, v1, v2);
4223                 if (err)
4224                         goto out;
4225         }
4226         if (likely(v0 & ~((u64)1 << LDN_MIF)))
4227                 niu_schedule_napi(np, lp, v0, v1, v2);
4228         else
4229                 niu_ldg_rearm(np, lp, 1);
4230 out:
4231         spin_unlock_irqrestore(&np->lock, flags);
4232
4233         return IRQ_HANDLED;
4234 }
4235
4236 static void niu_free_rx_ring_info(struct niu *np, struct rx_ring_info *rp)
4237 {
4238         if (rp->mbox) {
4239                 np->ops->free_coherent(np->device,
4240                                        sizeof(struct rxdma_mailbox),
4241                                        rp->mbox, rp->mbox_dma);
4242                 rp->mbox = NULL;
4243         }
4244         if (rp->rcr) {
4245                 np->ops->free_coherent(np->device,
4246                                        MAX_RCR_RING_SIZE * sizeof(__le64),
4247                                        rp->rcr, rp->rcr_dma);
4248                 rp->rcr = NULL;
4249                 rp->rcr_table_size = 0;
4250                 rp->rcr_index = 0;
4251         }
4252         if (rp->rbr) {
4253                 niu_rbr_free(np, rp);
4254
4255                 np->ops->free_coherent(np->device,
4256                                        MAX_RBR_RING_SIZE * sizeof(__le32),
4257                                        rp->rbr, rp->rbr_dma);
4258                 rp->rbr = NULL;
4259                 rp->rbr_table_size = 0;
4260                 rp->rbr_index = 0;
4261         }
4262         kfree(rp->rxhash);
4263         rp->rxhash = NULL;
4264 }
4265
4266 static void niu_free_tx_ring_info(struct niu *np, struct tx_ring_info *rp)
4267 {
4268         if (rp->mbox) {
4269                 np->ops->free_coherent(np->device,
4270                                        sizeof(struct txdma_mailbox),
4271                                        rp->mbox, rp->mbox_dma);
4272                 rp->mbox = NULL;
4273         }
4274         if (rp->descr) {
4275                 int i;
4276
4277                 for (i = 0; i < MAX_TX_RING_SIZE; i++) {
4278                         if (rp->tx_buffs[i].skb)
4279                                 (void) release_tx_packet(np, rp, i);
4280                 }
4281
4282                 np->ops->free_coherent(np->device,
4283                                        MAX_TX_RING_SIZE * sizeof(__le64),
4284                                        rp->descr, rp->descr_dma);
4285                 rp->descr = NULL;
4286                 rp->pending = 0;
4287                 rp->prod = 0;
4288                 rp->cons = 0;
4289                 rp->wrap_bit = 0;
4290         }
4291 }
4292
4293 static void niu_free_channels(struct niu *np)
4294 {
4295         int i;
4296
4297         if (np->rx_rings) {
4298                 for (i = 0; i < np->num_rx_rings; i++) {
4299                         struct rx_ring_info *rp = &np->rx_rings[i];
4300
4301                         niu_free_rx_ring_info(np, rp);
4302                 }
4303                 kfree(np->rx_rings);
4304                 np->rx_rings = NULL;
4305                 np->num_rx_rings = 0;
4306         }
4307
4308         if (np->tx_rings) {
4309                 for (i = 0; i < np->num_tx_rings; i++) {
4310                         struct tx_ring_info *rp = &np->tx_rings[i];
4311
4312                         niu_free_tx_ring_info(np, rp);
4313                 }
4314                 kfree(np->tx_rings);
4315                 np->tx_rings = NULL;
4316                 np->num_tx_rings = 0;
4317         }
4318 }
4319
4320 static int niu_alloc_rx_ring_info(struct niu *np,
4321                                   struct rx_ring_info *rp)
4322 {
4323         BUILD_BUG_ON(sizeof(struct rxdma_mailbox) != 64);
4324
4325         rp->rxhash = kcalloc(MAX_RBR_RING_SIZE, sizeof(struct page *),
4326                              GFP_KERNEL);
4327         if (!rp->rxhash)
4328                 return -ENOMEM;
4329
4330         rp->mbox = np->ops->alloc_coherent(np->device,
4331                                            sizeof(struct rxdma_mailbox),
4332                                            &rp->mbox_dma, GFP_KERNEL);
4333         if (!rp->mbox)
4334                 return -ENOMEM;
4335         if ((unsigned long)rp->mbox & (64UL - 1)) {
4336                 netdev_err(np->dev, "Coherent alloc gives misaligned RXDMA mailbox %p\n",
4337                            rp->mbox);
4338                 return -EINVAL;
4339         }
4340
4341         rp->rcr = np->ops->alloc_coherent(np->device,
4342                                           MAX_RCR_RING_SIZE * sizeof(__le64),
4343                                           &rp->rcr_dma, GFP_KERNEL);
4344         if (!rp->rcr)
4345                 return -ENOMEM;
4346         if ((unsigned long)rp->rcr & (64UL - 1)) {
4347                 netdev_err(np->dev, "Coherent alloc gives misaligned RXDMA RCR table %p\n",
4348                            rp->rcr);
4349                 return -EINVAL;
4350         }
4351         rp->rcr_table_size = MAX_RCR_RING_SIZE;
4352         rp->rcr_index = 0;
4353
4354         rp->rbr = np->ops->alloc_coherent(np->device,
4355                                           MAX_RBR_RING_SIZE * sizeof(__le32),
4356                                           &rp->rbr_dma, GFP_KERNEL);
4357         if (!rp->rbr)
4358                 return -ENOMEM;
4359         if ((unsigned long)rp->rbr & (64UL - 1)) {
4360                 netdev_err(np->dev, "Coherent alloc gives misaligned RXDMA RBR table %p\n",
4361                            rp->rbr);
4362                 return -EINVAL;
4363         }
4364         rp->rbr_table_size = MAX_RBR_RING_SIZE;
4365         rp->rbr_index = 0;
4366         rp->rbr_pending = 0;
4367
4368         return 0;
4369 }
4370
4371 static void niu_set_max_burst(struct niu *np, struct tx_ring_info *rp)
4372 {
4373         int mtu = np->dev->mtu;
4374
4375         /* These values are recommended by the HW designers for fair
4376          * utilization of DRR amongst the rings.
4377          */
4378         rp->max_burst = mtu + 32;
4379         if (rp->max_burst > 4096)
4380                 rp->max_burst = 4096;
4381 }
4382
4383 static int niu_alloc_tx_ring_info(struct niu *np,
4384                                   struct tx_ring_info *rp)
4385 {
4386         BUILD_BUG_ON(sizeof(struct txdma_mailbox) != 64);
4387
4388         rp->mbox = np->ops->alloc_coherent(np->device,
4389                                            sizeof(struct txdma_mailbox),
4390                                            &rp->mbox_dma, GFP_KERNEL);
4391         if (!rp->mbox)
4392                 return -ENOMEM;
4393         if ((unsigned long)rp->mbox & (64UL - 1)) {
4394                 netdev_err(np->dev, "Coherent alloc gives misaligned TXDMA mailbox %p\n",
4395                            rp->mbox);
4396                 return -EINVAL;
4397         }
4398
4399         rp->descr = np->ops->alloc_coherent(np->device,
4400                                             MAX_TX_RING_SIZE * sizeof(__le64),
4401                                             &rp->descr_dma, GFP_KERNEL);
4402         if (!rp->descr)
4403                 return -ENOMEM;
4404         if ((unsigned long)rp->descr & (64UL - 1)) {
4405                 netdev_err(np->dev, "Coherent alloc gives misaligned TXDMA descr table %p\n",
4406                            rp->descr);
4407                 return -EINVAL;
4408         }
4409
4410         rp->pending = MAX_TX_RING_SIZE;
4411         rp->prod = 0;
4412         rp->cons = 0;
4413         rp->wrap_bit = 0;
4414
4415         /* XXX make these configurable... XXX */
4416         rp->mark_freq = rp->pending / 4;
4417
4418         niu_set_max_burst(np, rp);
4419
4420         return 0;
4421 }
4422
4423 static void niu_size_rbr(struct niu *np, struct rx_ring_info *rp)
4424 {
4425         u16 bss;
4426
4427         bss = min(PAGE_SHIFT, 15);
4428
4429         rp->rbr_block_size = 1 << bss;
4430         rp->rbr_blocks_per_page = 1 << (PAGE_SHIFT-bss);
4431
4432         rp->rbr_sizes[0] = 256;
4433         rp->rbr_sizes[1] = 1024;
4434         if (np->dev->mtu > ETH_DATA_LEN) {
4435                 switch (PAGE_SIZE) {
4436                 case 4 * 1024:
4437                         rp->rbr_sizes[2] = 4096;
4438                         break;
4439
4440                 default:
4441                         rp->rbr_sizes[2] = 8192;
4442                         break;
4443                 }
4444         } else {
4445                 rp->rbr_sizes[2] = 2048;
4446         }
4447         rp->rbr_sizes[3] = rp->rbr_block_size;
4448 }
4449
4450 static int niu_alloc_channels(struct niu *np)
4451 {
4452         struct niu_parent *parent = np->parent;
4453         int first_rx_channel, first_tx_channel;
4454         int num_rx_rings, num_tx_rings;
4455         struct rx_ring_info *rx_rings;
4456         struct tx_ring_info *tx_rings;
4457         int i, port, err;
4458
4459         port = np->port;
4460         first_rx_channel = first_tx_channel = 0;
4461         for (i = 0; i < port; i++) {
4462                 first_rx_channel += parent->rxchan_per_port[i];
4463                 first_tx_channel += parent->txchan_per_port[i];
4464         }
4465
4466         num_rx_rings = parent->rxchan_per_port[port];
4467         num_tx_rings = parent->txchan_per_port[port];
4468
4469         rx_rings = kcalloc(num_rx_rings, sizeof(struct rx_ring_info),
4470                            GFP_KERNEL);
4471         err = -ENOMEM;
4472         if (!rx_rings)
4473                 goto out_err;
4474
4475         np->num_rx_rings = num_rx_rings;
4476         smp_wmb();
4477         np->rx_rings = rx_rings;
4478
4479         netif_set_real_num_rx_queues(np->dev, num_rx_rings);
4480
4481         for (i = 0; i < np->num_rx_rings; i++) {
4482                 struct rx_ring_info *rp = &np->rx_rings[i];
4483
4484                 rp->np = np;
4485                 rp->rx_channel = first_rx_channel + i;
4486
4487                 err = niu_alloc_rx_ring_info(np, rp);
4488                 if (err)
4489                         goto out_err;
4490
4491                 niu_size_rbr(np, rp);
4492
4493                 /* XXX better defaults, configurable, etc... XXX */
4494                 rp->nonsyn_window = 64;
4495                 rp->nonsyn_threshold = rp->rcr_table_size - 64;
4496                 rp->syn_window = 64;
4497                 rp->syn_threshold = rp->rcr_table_size - 64;
4498                 rp->rcr_pkt_threshold = 16;
4499                 rp->rcr_timeout = 8;
4500                 rp->rbr_kick_thresh = RBR_REFILL_MIN;
4501                 if (rp->rbr_kick_thresh < rp->rbr_blocks_per_page)
4502                         rp->rbr_kick_thresh = rp->rbr_blocks_per_page;
4503
4504                 err = niu_rbr_fill(np, rp, GFP_KERNEL);
4505                 if (err)
4506                         return err;
4507         }
4508
4509         tx_rings = kcalloc(num_tx_rings, sizeof(struct tx_ring_info),
4510                            GFP_KERNEL);
4511         err = -ENOMEM;
4512         if (!tx_rings)
4513                 goto out_err;
4514
4515         np->num_tx_rings = num_tx_rings;
4516         smp_wmb();
4517         np->tx_rings = tx_rings;
4518
4519         netif_set_real_num_tx_queues(np->dev, num_tx_rings);
4520
4521         for (i = 0; i < np->num_tx_rings; i++) {
4522                 struct tx_ring_info *rp = &np->tx_rings[i];
4523
4524                 rp->np = np;
4525                 rp->tx_channel = first_tx_channel + i;
4526
4527                 err = niu_alloc_tx_ring_info(np, rp);
4528                 if (err)
4529                         goto out_err;
4530         }
4531
4532         return 0;
4533
4534 out_err:
4535         niu_free_channels(np);
4536         return err;
4537 }
4538
4539 static int niu_tx_cs_sng_poll(struct niu *np, int channel)
4540 {
4541         int limit = 1000;
4542
4543         while (--limit > 0) {
4544                 u64 val = nr64(TX_CS(channel));
4545                 if (val & TX_CS_SNG_STATE)
4546                         return 0;
4547         }
4548         return -ENODEV;
4549 }
4550
4551 static int niu_tx_channel_stop(struct niu *np, int channel)
4552 {
4553         u64 val = nr64(TX_CS(channel));
4554
4555         val |= TX_CS_STOP_N_GO;
4556         nw64(TX_CS(channel), val);
4557
4558         return niu_tx_cs_sng_poll(np, channel);
4559 }
4560
4561 static int niu_tx_cs_reset_poll(struct niu *np, int channel)
4562 {
4563         int limit = 1000;
4564
4565         while (--limit > 0) {
4566                 u64 val = nr64(TX_CS(channel));
4567                 if (!(val & TX_CS_RST))
4568                         return 0;
4569         }
4570         return -ENODEV;
4571 }
4572
4573 static int niu_tx_channel_reset(struct niu *np, int channel)
4574 {
4575         u64 val = nr64(TX_CS(channel));
4576         int err;
4577
4578         val |= TX_CS_RST;
4579         nw64(TX_CS(channel), val);
4580
4581         err = niu_tx_cs_reset_poll(np, channel);
4582         if (!err)
4583                 nw64(TX_RING_KICK(channel), 0);
4584
4585         return err;
4586 }
4587
4588 static int niu_tx_channel_lpage_init(struct niu *np, int channel)
4589 {
4590         u64 val;
4591
4592         nw64(TX_LOG_MASK1(channel), 0);
4593         nw64(TX_LOG_VAL1(channel), 0);
4594         nw64(TX_LOG_MASK2(channel), 0);
4595         nw64(TX_LOG_VAL2(channel), 0);
4596         nw64(TX_LOG_PAGE_RELO1(channel), 0);
4597         nw64(TX_LOG_PAGE_RELO2(channel), 0);
4598         nw64(TX_LOG_PAGE_HDL(channel), 0);
4599
4600         val  = (u64)np->port << TX_LOG_PAGE_VLD_FUNC_SHIFT;
4601         val |= (TX_LOG_PAGE_VLD_PAGE0 | TX_LOG_PAGE_VLD_PAGE1);
4602         nw64(TX_LOG_PAGE_VLD(channel), val);
4603
4604         /* XXX TXDMA 32bit mode? XXX */
4605
4606         return 0;
4607 }
4608
4609 static void niu_txc_enable_port(struct niu *np, int on)
4610 {
4611         unsigned long flags;
4612         u64 val, mask;
4613
4614         niu_lock_parent(np, flags);
4615         val = nr64(TXC_CONTROL);
4616         mask = (u64)1 << np->port;
4617         if (on) {
4618                 val |= TXC_CONTROL_ENABLE | mask;
4619         } else {
4620                 val &= ~mask;
4621                 if ((val & ~TXC_CONTROL_ENABLE) == 0)
4622                         val &= ~TXC_CONTROL_ENABLE;
4623         }
4624         nw64(TXC_CONTROL, val);
4625         niu_unlock_parent(np, flags);
4626 }
4627
4628 static void niu_txc_set_imask(struct niu *np, u64 imask)
4629 {
4630         unsigned long flags;
4631         u64 val;
4632
4633         niu_lock_parent(np, flags);
4634         val = nr64(TXC_INT_MASK);
4635         val &= ~TXC_INT_MASK_VAL(np->port);
4636         val |= (imask << TXC_INT_MASK_VAL_SHIFT(np->port));
4637         niu_unlock_parent(np, flags);
4638 }
4639
4640 static void niu_txc_port_dma_enable(struct niu *np, int on)
4641 {
4642         u64 val = 0;
4643
4644         if (on) {
4645                 int i;
4646
4647                 for (i = 0; i < np->num_tx_rings; i++)
4648                         val |= (1 << np->tx_rings[i].tx_channel);
4649         }
4650         nw64(TXC_PORT_DMA(np->port), val);
4651 }
4652
4653 static int niu_init_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
4654 {
4655         int err, channel = rp->tx_channel;
4656         u64 val, ring_len;
4657
4658         err = niu_tx_channel_stop(np, channel);
4659         if (err)
4660                 return err;
4661
4662         err = niu_tx_channel_reset(np, channel);
4663         if (err)
4664                 return err;
4665
4666         err = niu_tx_channel_lpage_init(np, channel);
4667         if (err)
4668                 return err;
4669
4670         nw64(TXC_DMA_MAX(channel), rp->max_burst);
4671         nw64(TX_ENT_MSK(channel), 0);
4672
4673         if (rp->descr_dma & ~(TX_RNG_CFIG_STADDR_BASE |
4674                               TX_RNG_CFIG_STADDR)) {
4675                 netdev_err(np->dev, "TX ring channel %d DMA addr (%llx) is not aligned\n",
4676                            channel, (unsigned long long)rp->descr_dma);
4677                 return -EINVAL;
4678         }
4679
4680         /* The length field in TX_RNG_CFIG is measured in 64-byte
4681          * blocks.  rp->pending is the number of TX descriptors in
4682          * our ring, 8 bytes each, thus we divide by 8 bytes more
4683          * to get the proper value the chip wants.
4684          */
4685         ring_len = (rp->pending / 8);
4686
4687         val = ((ring_len << TX_RNG_CFIG_LEN_SHIFT) |
4688                rp->descr_dma);
4689         nw64(TX_RNG_CFIG(channel), val);
4690
4691         if (((rp->mbox_dma >> 32) & ~TXDMA_MBH_MBADDR) ||
4692             ((u32)rp->mbox_dma & ~TXDMA_MBL_MBADDR)) {
4693                 netdev_err(np->dev, "TX ring channel %d MBOX addr (%llx) has invalid bits\n",
4694                             channel, (unsigned long long)rp->mbox_dma);
4695                 return -EINVAL;
4696         }
4697         nw64(TXDMA_MBH(channel), rp->mbox_dma >> 32);
4698         nw64(TXDMA_MBL(channel), rp->mbox_dma & TXDMA_MBL_MBADDR);
4699
4700         nw64(TX_CS(channel), 0);
4701
4702         rp->last_pkt_cnt = 0;
4703
4704         return 0;
4705 }
4706
4707 static void niu_init_rdc_groups(struct niu *np)
4708 {
4709         struct niu_rdc_tables *tp = &np->parent->rdc_group_cfg[np->port];
4710         int i, first_table_num = tp->first_table_num;
4711
4712         for (i = 0; i < tp->num_tables; i++) {
4713                 struct rdc_table *tbl = &tp->tables[i];
4714                 int this_table = first_table_num + i;
4715                 int slot;
4716
4717                 for (slot = 0; slot < NIU_RDC_TABLE_SLOTS; slot++)
4718                         nw64(RDC_TBL(this_table, slot),
4719                              tbl->rxdma_channel[slot]);
4720         }
4721
4722         nw64(DEF_RDC(np->port), np->parent->rdc_default[np->port]);
4723 }
4724
4725 static void niu_init_drr_weight(struct niu *np)
4726 {
4727         int type = phy_decode(np->parent->port_phy, np->port);
4728         u64 val;
4729
4730         switch (type) {
4731         case PORT_TYPE_10G:
4732                 val = PT_DRR_WEIGHT_DEFAULT_10G;
4733                 break;
4734
4735         case PORT_TYPE_1G:
4736         default:
4737                 val = PT_DRR_WEIGHT_DEFAULT_1G;
4738                 break;
4739         }
4740         nw64(PT_DRR_WT(np->port), val);
4741 }
4742
4743 static int niu_init_hostinfo(struct niu *np)
4744 {
4745         struct niu_parent *parent = np->parent;
4746         struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
4747         int i, err, num_alt = niu_num_alt_addr(np);
4748         int first_rdc_table = tp->first_table_num;
4749
4750         err = niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
4751         if (err)
4752                 return err;
4753
4754         err = niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
4755         if (err)
4756                 return err;
4757
4758         for (i = 0; i < num_alt; i++) {
4759                 err = niu_set_alt_mac_rdc_table(np, i, first_rdc_table, 1);
4760                 if (err)
4761                         return err;
4762         }
4763
4764         return 0;
4765 }
4766
4767 static int niu_rx_channel_reset(struct niu *np, int channel)
4768 {
4769         return niu_set_and_wait_clear(np, RXDMA_CFIG1(channel),
4770                                       RXDMA_CFIG1_RST, 1000, 10,
4771                                       "RXDMA_CFIG1");
4772 }
4773
4774 static int niu_rx_channel_lpage_init(struct niu *np, int channel)
4775 {
4776         u64 val;
4777
4778         nw64(RX_LOG_MASK1(channel), 0);
4779         nw64(RX_LOG_VAL1(channel), 0);
4780         nw64(RX_LOG_MASK2(channel), 0);
4781         nw64(RX_LOG_VAL2(channel), 0);
4782         nw64(RX_LOG_PAGE_RELO1(channel), 0);
4783         nw64(RX_LOG_PAGE_RELO2(channel), 0);
4784         nw64(RX_LOG_PAGE_HDL(channel), 0);
4785
4786         val  = (u64)np->port << RX_LOG_PAGE_VLD_FUNC_SHIFT;
4787         val |= (RX_LOG_PAGE_VLD_PAGE0 | RX_LOG_PAGE_VLD_PAGE1);
4788         nw64(RX_LOG_PAGE_VLD(channel), val);
4789
4790         return 0;
4791 }
4792
4793 static void niu_rx_channel_wred_init(struct niu *np, struct rx_ring_info *rp)
4794 {
4795         u64 val;
4796
4797         val = (((u64)rp->nonsyn_window << RDC_RED_PARA_WIN_SHIFT) |
4798                ((u64)rp->nonsyn_threshold << RDC_RED_PARA_THRE_SHIFT) |
4799                ((u64)rp->syn_window << RDC_RED_PARA_WIN_SYN_SHIFT) |
4800                ((u64)rp->syn_threshold << RDC_RED_PARA_THRE_SYN_SHIFT));
4801         nw64(RDC_RED_PARA(rp->rx_channel), val);
4802 }
4803
4804 static int niu_compute_rbr_cfig_b(struct rx_ring_info *rp, u64 *ret)
4805 {
4806         u64 val = 0;
4807
4808         *ret = 0;
4809         switch (rp->rbr_block_size) {
4810         case 4 * 1024:
4811                 val |= (RBR_BLKSIZE_4K << RBR_CFIG_B_BLKSIZE_SHIFT);
4812                 break;
4813         case 8 * 1024:
4814                 val |= (RBR_BLKSIZE_8K << RBR_CFIG_B_BLKSIZE_SHIFT);
4815                 break;
4816         case 16 * 1024:
4817                 val |= (RBR_BLKSIZE_16K << RBR_CFIG_B_BLKSIZE_SHIFT);
4818                 break;
4819         case 32 * 1024:
4820                 val |= (RBR_BLKSIZE_32K << RBR_CFIG_B_BLKSIZE_SHIFT);
4821                 break;
4822         default:
4823                 return -EINVAL;
4824         }
4825         val |= RBR_CFIG_B_VLD2;
4826         switch (rp->rbr_sizes[2]) {
4827         case 2 * 1024:
4828                 val |= (RBR_BUFSZ2_2K << RBR_CFIG_B_BUFSZ2_SHIFT);
4829                 break;
4830         case 4 * 1024:
4831                 val |= (RBR_BUFSZ2_4K << RBR_CFIG_B_BUFSZ2_SHIFT);
4832                 break;
4833         case 8 * 1024:
4834                 val |= (RBR_BUFSZ2_8K << RBR_CFIG_B_BUFSZ2_SHIFT);
4835                 break;
4836         case 16 * 1024:
4837                 val |= (RBR_BUFSZ2_16K << RBR_CFIG_B_BUFSZ2_SHIFT);
4838                 break;
4839
4840         default:
4841                 return -EINVAL;
4842         }
4843         val |= RBR_CFIG_B_VLD1;
4844         switch (rp->rbr_sizes[1]) {
4845         case 1 * 1024:
4846                 val |= (RBR_BUFSZ1_1K << RBR_CFIG_B_BUFSZ1_SHIFT);
4847                 break;
4848         case 2 * 1024:
4849                 val |= (RBR_BUFSZ1_2K << RBR_CFIG_B_BUFSZ1_SHIFT);
4850                 break;
4851         case 4 * 1024:
4852                 val |= (RBR_BUFSZ1_4K << RBR_CFIG_B_BUFSZ1_SHIFT);
4853                 break;
4854         case 8 * 1024:
4855                 val |= (RBR_BUFSZ1_8K << RBR_CFIG_B_BUFSZ1_SHIFT);
4856                 break;
4857
4858         default:
4859                 return -EINVAL;
4860         }
4861         val |= RBR_CFIG_B_VLD0;
4862         switch (rp->rbr_sizes[0]) {
4863         case 256:
4864                 val |= (RBR_BUFSZ0_256 << RBR_CFIG_B_BUFSZ0_SHIFT);
4865                 break;
4866         case 512:
4867                 val |= (RBR_BUFSZ0_512 << RBR_CFIG_B_BUFSZ0_SHIFT);
4868                 break;
4869         case 1 * 1024:
4870                 val |= (RBR_BUFSZ0_1K << RBR_CFIG_B_BUFSZ0_SHIFT);
4871                 break;
4872         case 2 * 1024:
4873                 val |= (RBR_BUFSZ0_2K << RBR_CFIG_B_BUFSZ0_SHIFT);
4874                 break;
4875
4876         default:
4877                 return -EINVAL;
4878         }
4879
4880         *ret = val;
4881         return 0;
4882 }
4883
4884 static int niu_enable_rx_channel(struct niu *np, int channel, int on)
4885 {
4886         u64 val = nr64(RXDMA_CFIG1(channel));
4887         int limit;
4888
4889         if (on)
4890                 val |= RXDMA_CFIG1_EN;
4891         else
4892                 val &= ~RXDMA_CFIG1_EN;
4893         nw64(RXDMA_CFIG1(channel), val);
4894
4895         limit = 1000;
4896         while (--limit > 0) {
4897                 if (nr64(RXDMA_CFIG1(channel)) & RXDMA_CFIG1_QST)
4898                         break;
4899                 udelay(10);
4900         }
4901         if (limit <= 0)
4902                 return -ENODEV;
4903         return 0;
4904 }
4905
4906 static int niu_init_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
4907 {
4908         int err, channel = rp->rx_channel;
4909         u64 val;
4910
4911         err = niu_rx_channel_reset(np, channel);
4912         if (err)
4913                 return err;
4914
4915         err = niu_rx_channel_lpage_init(np, channel);
4916         if (err)
4917                 return err;
4918
4919         niu_rx_channel_wred_init(np, rp);
4920
4921         nw64(RX_DMA_ENT_MSK(channel), RX_DMA_ENT_MSK_RBR_EMPTY);
4922         nw64(RX_DMA_CTL_STAT(channel),
4923              (RX_DMA_CTL_STAT_MEX |
4924               RX_DMA_CTL_STAT_RCRTHRES |
4925               RX_DMA_CTL_STAT_RCRTO |
4926               RX_DMA_CTL_STAT_RBR_EMPTY));
4927         nw64(RXDMA_CFIG1(channel), rp->mbox_dma >> 32);
4928         nw64(RXDMA_CFIG2(channel),
4929              ((rp->mbox_dma & RXDMA_CFIG2_MBADDR_L) |
4930               RXDMA_CFIG2_FULL_HDR));
4931         nw64(RBR_CFIG_A(channel),
4932              ((u64)rp->rbr_table_size << RBR_CFIG_A_LEN_SHIFT) |
4933              (rp->rbr_dma & (RBR_CFIG_A_STADDR_BASE | RBR_CFIG_A_STADDR)));
4934         err = niu_compute_rbr_cfig_b(rp, &val);
4935         if (err)
4936                 return err;
4937         nw64(RBR_CFIG_B(channel), val);
4938         nw64(RCRCFIG_A(channel),
4939              ((u64)rp->rcr_table_size << RCRCFIG_A_LEN_SHIFT) |
4940              (rp->rcr_dma & (RCRCFIG_A_STADDR_BASE | RCRCFIG_A_STADDR)));
4941         nw64(RCRCFIG_B(channel),
4942              ((u64)rp->rcr_pkt_threshold << RCRCFIG_B_PTHRES_SHIFT) |
4943              RCRCFIG_B_ENTOUT |
4944              ((u64)rp->rcr_timeout << RCRCFIG_B_TIMEOUT_SHIFT));
4945
4946         err = niu_enable_rx_channel(np, channel, 1);
4947         if (err)
4948                 return err;
4949
4950         nw64(RBR_KICK(channel), rp->rbr_index);
4951
4952         val = nr64(RX_DMA_CTL_STAT(channel));
4953         val |= RX_DMA_CTL_STAT_RBR_EMPTY;
4954         nw64(RX_DMA_CTL_STAT(channel), val);
4955
4956         return 0;
4957 }
4958
4959 static int niu_init_rx_channels(struct niu *np)
4960 {
4961         unsigned long flags;
4962         u64 seed = jiffies_64;
4963         int err, i;
4964
4965         niu_lock_parent(np, flags);
4966         nw64(RX_DMA_CK_DIV, np->parent->rxdma_clock_divider);
4967         nw64(RED_RAN_INIT, RED_RAN_INIT_OPMODE | (seed & RED_RAN_INIT_VAL));
4968         niu_unlock_parent(np, flags);
4969
4970         /* XXX RXDMA 32bit mode? XXX */
4971
4972         niu_init_rdc_groups(np);
4973         niu_init_drr_weight(np);
4974
4975         err = niu_init_hostinfo(np);
4976         if (err)
4977                 return err;
4978
4979         for (i = 0; i < np->num_rx_rings; i++) {
4980                 struct rx_ring_info *rp = &np->rx_rings[i];
4981
4982                 err = niu_init_one_rx_channel(np, rp);
4983                 if (err)
4984                         return err;
4985         }
4986
4987         return 0;
4988 }
4989
4990 static int niu_set_ip_frag_rule(struct niu *np)
4991 {
4992         struct niu_parent *parent = np->parent;
4993         struct niu_classifier *cp = &np->clas;
4994         struct niu_tcam_entry *tp;
4995         int index, err;
4996
4997         index = cp->tcam_top;
4998         tp = &parent->tcam[index];
4999
5000         /* Note that the noport bit is the same in both ipv4 and
5001          * ipv6 format TCAM entries.
5002          */
5003         memset(tp, 0, sizeof(*tp));
5004         tp->key[1] = TCAM_V4KEY1_NOPORT;
5005         tp->key_mask[1] = TCAM_V4KEY1_NOPORT;
5006         tp->assoc_data = (TCAM_ASSOCDATA_TRES_USE_OFFSET |
5007                           ((u64)0 << TCAM_ASSOCDATA_OFFSET_SHIFT));
5008         err = tcam_write(np, index, tp->key, tp->key_mask);
5009         if (err)
5010                 return err;
5011         err = tcam_assoc_write(np, index, tp->assoc_data);
5012         if (err)
5013                 return err;
5014         tp->valid = 1;
5015         cp->tcam_valid_entries++;
5016
5017         return 0;
5018 }
5019
5020 static int niu_init_classifier_hw(struct niu *np)
5021 {
5022         struct niu_parent *parent = np->parent;
5023         struct niu_classifier *cp = &np->clas;
5024         int i, err;
5025
5026         nw64(H1POLY, cp->h1_init);
5027         nw64(H2POLY, cp->h2_init);
5028
5029         err = niu_init_hostinfo(np);
5030         if (err)
5031                 return err;
5032
5033         for (i = 0; i < ENET_VLAN_TBL_NUM_ENTRIES; i++) {
5034                 struct niu_vlan_rdc *vp = &cp->vlan_mappings[i];
5035
5036                 vlan_tbl_write(np, i, np->port,
5037                                vp->vlan_pref, vp->rdc_num);
5038         }
5039
5040         for (i = 0; i < cp->num_alt_mac_mappings; i++) {
5041                 struct niu_altmac_rdc *ap = &cp->alt_mac_mappings[i];
5042
5043                 err = niu_set_alt_mac_rdc_table(np, ap->alt_mac_num,
5044                                                 ap->rdc_num, ap->mac_pref);
5045                 if (err)
5046                         return err;
5047         }
5048
5049         for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_SCTP_IPV6; i++) {
5050                 int index = i - CLASS_CODE_USER_PROG1;
5051
5052                 err = niu_set_tcam_key(np, i, parent->tcam_key[index]);
5053                 if (err)
5054                         return err;
5055                 err = niu_set_flow_key(np, i, parent->flow_key[index]);
5056                 if (err)
5057                         return err;
5058         }
5059
5060         err = niu_set_ip_frag_rule(np);
5061         if (err)
5062                 return err;
5063
5064         tcam_enable(np, 1);
5065
5066         return 0;
5067 }
5068
5069 static int niu_zcp_write(struct niu *np, int index, u64 *data)
5070 {
5071         nw64(ZCP_RAM_DATA0, data[0]);
5072         nw64(ZCP_RAM_DATA1, data[1]);
5073         nw64(ZCP_RAM_DATA2, data[2]);
5074         nw64(ZCP_RAM_DATA3, data[3]);
5075         nw64(ZCP_RAM_DATA4, data[4]);
5076         nw64(ZCP_RAM_BE, ZCP_RAM_BE_VAL);
5077         nw64(ZCP_RAM_ACC,
5078              (ZCP_RAM_ACC_WRITE |
5079               (0 << ZCP_RAM_ACC_ZFCID_SHIFT) |
5080               (ZCP_RAM_SEL_CFIFO(np->port) << ZCP_RAM_ACC_RAM_SEL_SHIFT)));
5081
5082         return niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
5083                                    1000, 100);
5084 }
5085
5086 static int niu_zcp_read(struct niu *np, int index, u64 *data)
5087 {
5088         int err;
5089
5090         err = niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
5091                                   1000, 100);
5092         if (err) {
5093                 netdev_err(np->dev, "ZCP read busy won't clear, ZCP_RAM_ACC[%llx]\n",
5094                            (unsigned long long)nr64(ZCP_RAM_ACC));
5095                 return err;
5096         }
5097
5098         nw64(ZCP_RAM_ACC,
5099              (ZCP_RAM_ACC_READ |
5100               (0 << ZCP_RAM_ACC_ZFCID_SHIFT) |
5101               (ZCP_RAM_SEL_CFIFO(np->port) << ZCP_RAM_ACC_RAM_SEL_SHIFT)));
5102
5103         err = niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
5104                                   1000, 100);
5105         if (err) {
5106                 netdev_err(np->dev, "ZCP read busy2 won't clear, ZCP_RAM_ACC[%llx]\n",
5107                            (unsigned long long)nr64(ZCP_RAM_ACC));
5108                 return err;
5109         }
5110
5111         data[0] = nr64(ZCP_RAM_DATA0);
5112         data[1] = nr64(ZCP_RAM_DATA1);
5113         data[2] = nr64(ZCP_RAM_DATA2);
5114         data[3] = nr64(ZCP_RAM_DATA3);
5115         data[4] = nr64(ZCP_RAM_DATA4);
5116
5117         return 0;
5118 }
5119
5120 static void niu_zcp_cfifo_reset(struct niu *np)
5121 {
5122         u64 val = nr64(RESET_CFIFO);
5123
5124         val |= RESET_CFIFO_RST(np->port);
5125         nw64(RESET_CFIFO, val);
5126         udelay(10);
5127
5128         val &= ~RESET_CFIFO_RST(np->port);
5129         nw64(RESET_CFIFO, val);
5130 }
5131
5132 static int niu_init_zcp(struct niu *np)
5133 {
5134         u64 data[5], rbuf[5];
5135         int i, max, err;
5136
5137         if (np->parent->plat_type != PLAT_TYPE_NIU) {
5138                 if (np->port == 0 || np->port == 1)
5139                         max = ATLAS_P0_P1_CFIFO_ENTRIES;
5140                 else
5141                         max = ATLAS_P2_P3_CFIFO_ENTRIES;
5142         } else
5143                 max = NIU_CFIFO_ENTRIES;
5144
5145         data[0] = 0;
5146         data[1] = 0;
5147         data[2] = 0;
5148         data[3] = 0;
5149         data[4] = 0;
5150
5151         for (i = 0; i < max; i++) {
5152                 err = niu_zcp_write(np, i, data);
5153                 if (err)
5154                         return err;
5155                 err = niu_zcp_read(np, i, rbuf);
5156                 if (err)
5157                         return err;
5158         }
5159
5160         niu_zcp_cfifo_reset(np);
5161         nw64(CFIFO_ECC(np->port), 0);
5162         nw64(ZCP_INT_STAT, ZCP_INT_STAT_ALL);
5163         (void) nr64(ZCP_INT_STAT);
5164         nw64(ZCP_INT_MASK, ZCP_INT_MASK_ALL);
5165
5166         return 0;
5167 }
5168
5169 static void niu_ipp_write(struct niu *np, int index, u64 *data)
5170 {
5171         u64 val = nr64_ipp(IPP_CFIG);
5172
5173         nw64_ipp(IPP_CFIG, val | IPP_CFIG_DFIFO_PIO_W);
5174         nw64_ipp(IPP_DFIFO_WR_PTR, index);
5175         nw64_ipp(IPP_DFIFO_WR0, data[0]);
5176         nw64_ipp(IPP_DFIFO_WR1, data[1]);
5177         nw64_ipp(IPP_DFIFO_WR2, data[2]);
5178         nw64_ipp(IPP_DFIFO_WR3, data[3]);
5179         nw64_ipp(IPP_DFIFO_WR4, data[4]);
5180         nw64_ipp(IPP_CFIG, val & ~IPP_CFIG_DFIFO_PIO_W);
5181 }
5182
5183 static void niu_ipp_read(struct niu *np, int index, u64 *data)
5184 {
5185         nw64_ipp(IPP_DFIFO_RD_PTR, index);
5186         data[0] = nr64_ipp(IPP_DFIFO_RD0);
5187         data[1] = nr64_ipp(IPP_DFIFO_RD1);
5188         data[2] = nr64_ipp(IPP_DFIFO_RD2);
5189         data[3] = nr64_ipp(IPP_DFIFO_RD3);
5190         data[4] = nr64_ipp(IPP_DFIFO_RD4);
5191 }
5192
5193 static int niu_ipp_reset(struct niu *np)
5194 {
5195         return niu_set_and_wait_clear_ipp(np, IPP_CFIG, IPP_CFIG_SOFT_RST,
5196                                           1000, 100, "IPP_CFIG");
5197 }
5198
5199 static int niu_init_ipp(struct niu *np)
5200 {
5201         u64 data[5], rbuf[5], val;
5202         int i, max, err;
5203
5204         if (np->parent->plat_type != PLAT_TYPE_NIU) {
5205                 if (np->port == 0 || np->port == 1)
5206                         max = ATLAS_P0_P1_DFIFO_ENTRIES;
5207                 else
5208                         max = ATLAS_P2_P3_DFIFO_ENTRIES;
5209         } else
5210                 max = NIU_DFIFO_ENTRIES;
5211
5212         data[0] = 0;
5213         data[1] = 0;
5214         data[2] = 0;
5215         data[3] = 0;
5216         data[4] = 0;
5217
5218         for (i = 0; i < max; i++) {
5219                 niu_ipp_write(np, i, data);
5220                 niu_ipp_read(np, i, rbuf);
5221         }
5222
5223         (void) nr64_ipp(IPP_INT_STAT);
5224         (void) nr64_ipp(IPP_INT_STAT);
5225
5226         err = niu_ipp_reset(np);
5227         if (err)
5228                 return err;
5229
5230         (void) nr64_ipp(IPP_PKT_DIS);
5231         (void) nr64_ipp(IPP_BAD_CS_CNT);
5232         (void) nr64_ipp(IPP_ECC);
5233
5234         (void) nr64_ipp(IPP_INT_STAT);
5235
5236         nw64_ipp(IPP_MSK, ~IPP_MSK_ALL);
5237
5238         val = nr64_ipp(IPP_CFIG);
5239         val &= ~IPP_CFIG_IP_MAX_PKT;
5240         val |= (IPP_CFIG_IPP_ENABLE |
5241                 IPP_CFIG_DFIFO_ECC_EN |
5242                 IPP_CFIG_DROP_BAD_CRC |
5243                 IPP_CFIG_CKSUM_EN |
5244                 (0x1ffff << IPP_CFIG_IP_MAX_PKT_SHIFT));
5245         nw64_ipp(IPP_CFIG, val);
5246
5247         return 0;
5248 }
5249
5250 static void niu_handle_led(struct niu *np, int status)
5251 {
5252         u64 val;
5253         val = nr64_mac(XMAC_CONFIG);
5254
5255         if ((np->flags & NIU_FLAGS_10G) != 0 &&
5256             (np->flags & NIU_FLAGS_FIBER) != 0) {
5257                 if (status) {
5258                         val |= XMAC_CONFIG_LED_POLARITY;
5259                         val &= ~XMAC_CONFIG_FORCE_LED_ON;
5260                 } else {
5261                         val |= XMAC_CONFIG_FORCE_LED_ON;
5262                         val &= ~XMAC_CONFIG_LED_POLARITY;
5263                 }
5264         }
5265
5266         nw64_mac(XMAC_CONFIG, val);
5267 }
5268
5269 static void niu_init_xif_xmac(struct niu *np)
5270 {
5271         struct niu_link_config *lp = &np->link_config;
5272         u64 val;
5273
5274         if (np->flags & NIU_FLAGS_XCVR_SERDES) {
5275                 val = nr64(MIF_CONFIG);
5276                 val |= MIF_CONFIG_ATCA_GE;
5277                 nw64(MIF_CONFIG, val);
5278         }
5279
5280         val = nr64_mac(XMAC_CONFIG);
5281         val &= ~XMAC_CONFIG_SEL_POR_CLK_SRC;
5282
5283         val |= XMAC_CONFIG_TX_OUTPUT_EN;
5284
5285         if (lp->loopback_mode == LOOPBACK_MAC) {
5286                 val &= ~XMAC_CONFIG_SEL_POR_CLK_SRC;
5287                 val |= XMAC_CONFIG_LOOPBACK;
5288         } else {
5289                 val &= ~XMAC_CONFIG_LOOPBACK;
5290         }
5291
5292         if (np->flags & NIU_FLAGS_10G) {
5293                 val &= ~XMAC_CONFIG_LFS_DISABLE;
5294         } else {
5295                 val |= XMAC_CONFIG_LFS_DISABLE;
5296                 if (!(np->flags & NIU_FLAGS_FIBER) &&
5297                     !(np->flags & NIU_FLAGS_XCVR_SERDES))
5298                         val |= XMAC_CONFIG_1G_PCS_BYPASS;
5299                 else
5300                         val &= ~XMAC_CONFIG_1G_PCS_BYPASS;
5301         }
5302
5303         val &= ~XMAC_CONFIG_10G_XPCS_BYPASS;
5304
5305         if (lp->active_speed == SPEED_100)
5306                 val |= XMAC_CONFIG_SEL_CLK_25MHZ;
5307         else
5308                 val &= ~XMAC_CONFIG_SEL_CLK_25MHZ;
5309
5310         nw64_mac(XMAC_CONFIG, val);
5311
5312         val = nr64_mac(XMAC_CONFIG);
5313         val &= ~XMAC_CONFIG_MODE_MASK;
5314         if (np->flags & NIU_FLAGS_10G) {
5315                 val |= XMAC_CONFIG_MODE_XGMII;
5316         } else {
5317                 if (lp->active_speed == SPEED_1000)
5318                         val |= XMAC_CONFIG_MODE_GMII;
5319                 else
5320                         val |= XMAC_CONFIG_MODE_MII;
5321         }
5322
5323         nw64_mac(XMAC_CONFIG, val);
5324 }
5325
5326 static void niu_init_xif_bmac(struct niu *np)
5327 {
5328         struct niu_link_config *lp = &np->link_config;
5329         u64 val;
5330
5331         val = BMAC_XIF_CONFIG_TX_OUTPUT_EN;
5332
5333         if (lp->loopback_mode == LOOPBACK_MAC)
5334                 val |= BMAC_XIF_CONFIG_MII_LOOPBACK;
5335         else
5336                 val &= ~BMAC_XIF_CONFIG_MII_LOOPBACK;
5337
5338         if (lp->active_speed == SPEED_1000)
5339                 val |= BMAC_XIF_CONFIG_GMII_MODE;
5340         else
5341                 val &= ~BMAC_XIF_CONFIG_GMII_MODE;
5342
5343         val &= ~(BMAC_XIF_CONFIG_LINK_LED |
5344                  BMAC_XIF_CONFIG_LED_POLARITY);
5345
5346         if (!(np->flags & NIU_FLAGS_10G) &&
5347             !(np->flags & NIU_FLAGS_FIBER) &&
5348             lp->active_speed == SPEED_100)
5349                 val |= BMAC_XIF_CONFIG_25MHZ_CLOCK;
5350         else
5351                 val &= ~BMAC_XIF_CONFIG_25MHZ_CLOCK;
5352
5353         nw64_mac(BMAC_XIF_CONFIG, val);
5354 }
5355
5356 static void niu_init_xif(struct niu *np)
5357 {
5358         if (np->flags & NIU_FLAGS_XMAC)
5359                 niu_init_xif_xmac(np);
5360         else
5361                 niu_init_xif_bmac(np);
5362 }
5363
5364 static void niu_pcs_mii_reset(struct niu *np)
5365 {
5366         int limit = 1000;
5367         u64 val = nr64_pcs(PCS_MII_CTL);
5368         val |= PCS_MII_CTL_RST;
5369         nw64_pcs(PCS_MII_CTL, val);
5370         while ((--limit >= 0) && (val & PCS_MII_CTL_RST)) {
5371                 udelay(100);
5372                 val = nr64_pcs(PCS_MII_CTL);
5373         }
5374 }
5375
5376 static void niu_xpcs_reset(struct niu *np)
5377 {
5378         int limit = 1000;
5379         u64 val = nr64_xpcs(XPCS_CONTROL1);
5380         val |= XPCS_CONTROL1_RESET;
5381         nw64_xpcs(XPCS_CONTROL1, val);
5382         while ((--limit >= 0) && (val & XPCS_CONTROL1_RESET)) {
5383                 udelay(100);
5384                 val = nr64_xpcs(XPCS_CONTROL1);
5385         }
5386 }
5387
5388 static int niu_init_pcs(struct niu *np)
5389 {
5390         struct niu_link_config *lp = &np->link_config;
5391         u64 val;
5392
5393         switch (np->flags & (NIU_FLAGS_10G |
5394                              NIU_FLAGS_FIBER |
5395                              NIU_FLAGS_XCVR_SERDES)) {
5396         case NIU_FLAGS_FIBER:
5397                 /* 1G fiber */
5398                 nw64_pcs(PCS_CONF, PCS_CONF_MASK | PCS_CONF_ENABLE);
5399                 nw64_pcs(PCS_DPATH_MODE, 0);
5400                 niu_pcs_mii_reset(np);
5401                 break;
5402
5403         case NIU_FLAGS_10G:
5404         case NIU_FLAGS_10G | NIU_FLAGS_FIBER:
5405         case NIU_FLAGS_10G | NIU_FLAGS_XCVR_SERDES:
5406                 /* 10G SERDES */
5407                 if (!(np->flags & NIU_FLAGS_XMAC))
5408                         return -EINVAL;
5409
5410                 /* 10G copper or fiber */
5411                 val = nr64_mac(XMAC_CONFIG);
5412                 val &= ~XMAC_CONFIG_10G_XPCS_BYPASS;
5413                 nw64_mac(XMAC_CONFIG, val);
5414
5415                 niu_xpcs_reset(np);
5416
5417                 val = nr64_xpcs(XPCS_CONTROL1);
5418                 if (lp->loopback_mode == LOOPBACK_PHY)
5419                         val |= XPCS_CONTROL1_LOOPBACK;
5420                 else
5421                         val &= ~XPCS_CONTROL1_LOOPBACK;
5422                 nw64_xpcs(XPCS_CONTROL1, val);
5423
5424                 nw64_xpcs(XPCS_DESKEW_ERR_CNT, 0);
5425                 (void) nr64_xpcs(XPCS_SYMERR_CNT01);
5426                 (void) nr64_xpcs(XPCS_SYMERR_CNT23);
5427                 break;
5428
5429
5430         case NIU_FLAGS_XCVR_SERDES:
5431                 /* 1G SERDES */
5432                 niu_pcs_mii_reset(np);
5433                 nw64_pcs(PCS_CONF, PCS_CONF_MASK | PCS_CONF_ENABLE);
5434                 nw64_pcs(PCS_DPATH_MODE, 0);
5435                 break;
5436
5437         case 0:
5438                 /* 1G copper */
5439         case NIU_FLAGS_XCVR_SERDES | NIU_FLAGS_FIBER:
5440                 /* 1G RGMII FIBER */
5441                 nw64_pcs(PCS_DPATH_MODE, PCS_DPATH_MODE_MII);
5442                 niu_pcs_mii_reset(np);
5443                 break;
5444
5445         default:
5446                 return -EINVAL;
5447         }
5448
5449         return 0;
5450 }
5451
5452 static int niu_reset_tx_xmac(struct niu *np)
5453 {
5454         return niu_set_and_wait_clear_mac(np, XTXMAC_SW_RST,
5455                                           (XTXMAC_SW_RST_REG_RS |
5456                                            XTXMAC_SW_RST_SOFT_RST),
5457                                           1000, 100, "XTXMAC_SW_RST");
5458 }
5459
5460 static int niu_reset_tx_bmac(struct niu *np)
5461 {
5462         int limit;
5463
5464         nw64_mac(BTXMAC_SW_RST, BTXMAC_SW_RST_RESET);
5465         limit = 1000;
5466         while (--limit >= 0) {
5467                 if (!(nr64_mac(BTXMAC_SW_RST) & BTXMAC_SW_RST_RESET))
5468                         break;
5469                 udelay(100);
5470         }
5471         if (limit < 0) {
5472                 dev_err(np->device, "Port %u TX BMAC would not reset, BTXMAC_SW_RST[%llx]\n",
5473                         np->port,
5474                         (unsigned long long) nr64_mac(BTXMAC_SW_RST));
5475                 return -ENODEV;
5476         }
5477
5478         return 0;
5479 }
5480
5481 static int niu_reset_tx_mac(struct niu *np)
5482 {
5483         if (np->flags & NIU_FLAGS_XMAC)
5484                 return niu_reset_tx_xmac(np);
5485         else
5486                 return niu_reset_tx_bmac(np);
5487 }
5488
5489 static void niu_init_tx_xmac(struct niu *np, u64 min, u64 max)
5490 {
5491         u64 val;
5492
5493         val = nr64_mac(XMAC_MIN);
5494         val &= ~(XMAC_MIN_TX_MIN_PKT_SIZE |
5495                  XMAC_MIN_RX_MIN_PKT_SIZE);
5496         val |= (min << XMAC_MIN_RX_MIN_PKT_SIZE_SHFT);
5497         val |= (min << XMAC_MIN_TX_MIN_PKT_SIZE_SHFT);
5498         nw64_mac(XMAC_MIN, val);
5499
5500         nw64_mac(XMAC_MAX, max);
5501
5502         nw64_mac(XTXMAC_STAT_MSK, ~(u64)0);
5503
5504         val = nr64_mac(XMAC_IPG);
5505         if (np->flags & NIU_FLAGS_10G) {
5506                 val &= ~XMAC_IPG_IPG_XGMII;
5507                 val |= (IPG_12_15_XGMII << XMAC_IPG_IPG_XGMII_SHIFT);
5508         } else {
5509                 val &= ~XMAC_IPG_IPG_MII_GMII;
5510                 val |= (IPG_12_MII_GMII << XMAC_IPG_IPG_MII_GMII_SHIFT);
5511         }
5512         nw64_mac(XMAC_IPG, val);
5513
5514         val = nr64_mac(XMAC_CONFIG);
5515         val &= ~(XMAC_CONFIG_ALWAYS_NO_CRC |
5516                  XMAC_CONFIG_STRETCH_MODE |
5517                  XMAC_CONFIG_VAR_MIN_IPG_EN |
5518                  XMAC_CONFIG_TX_ENABLE);
5519         nw64_mac(XMAC_CONFIG, val);
5520
5521         nw64_mac(TXMAC_FRM_CNT, 0);
5522         nw64_mac(TXMAC_BYTE_CNT, 0);
5523 }
5524
5525 static void niu_init_tx_bmac(struct niu *np, u64 min, u64 max)
5526 {
5527         u64 val;
5528
5529         nw64_mac(BMAC_MIN_FRAME, min);
5530         nw64_mac(BMAC_MAX_FRAME, max);
5531
5532         nw64_mac(BTXMAC_STATUS_MASK, ~(u64)0);
5533         nw64_mac(BMAC_CTRL_TYPE, 0x8808);
5534         nw64_mac(BMAC_PREAMBLE_SIZE, 7);
5535
5536         val = nr64_mac(BTXMAC_CONFIG);
5537         val &= ~(BTXMAC_CONFIG_FCS_DISABLE |
5538                  BTXMAC_CONFIG_ENABLE);
5539         nw64_mac(BTXMAC_CONFIG, val);
5540 }
5541
5542 static void niu_init_tx_mac(struct niu *np)
5543 {
5544         u64 min, max;
5545
5546         min = 64;
5547         if (np->dev->mtu > ETH_DATA_LEN)
5548                 max = 9216;
5549         else
5550                 max = 1522;
5551
5552         /* The XMAC_MIN register only accepts values for TX min which
5553          * have the low 3 bits cleared.
5554          */
5555         BUG_ON(min & 0x7);
5556
5557         if (np->flags & NIU_FLAGS_XMAC)
5558                 niu_init_tx_xmac(np, min, max);
5559         else
5560                 niu_init_tx_bmac(np, min, max);
5561 }
5562
5563 static int niu_reset_rx_xmac(struct niu *np)
5564 {
5565         int limit;
5566
5567         nw64_mac(XRXMAC_SW_RST,
5568                  XRXMAC_SW_RST_REG_RS | XRXMAC_SW_RST_SOFT_RST);
5569         limit = 1000;
5570         while (--limit >= 0) {
5571                 if (!(nr64_mac(XRXMAC_SW_RST) & (XRXMAC_SW_RST_REG_RS |
5572                                                  XRXMAC_SW_RST_SOFT_RST)))
5573                         break;
5574                 udelay(100);
5575         }
5576         if (limit < 0) {
5577                 dev_err(np->device, "Port %u RX XMAC would not reset, XRXMAC_SW_RST[%llx]\n",
5578                         np->port,
5579                         (unsigned long long) nr64_mac(XRXMAC_SW_RST));
5580                 return -ENODEV;
5581         }
5582
5583         return 0;
5584 }
5585
5586 static int niu_reset_rx_bmac(struct niu *np)
5587 {
5588         int limit;
5589
5590         nw64_mac(BRXMAC_SW_RST, BRXMAC_SW_RST_RESET);
5591         limit = 1000;
5592         while (--limit >= 0) {
5593                 if (!(nr64_mac(BRXMAC_SW_RST) & BRXMAC_SW_RST_RESET))
5594                         break;
5595                 udelay(100);
5596         }
5597         if (limit < 0) {
5598                 dev_err(np->device, "Port %u RX BMAC would not reset, BRXMAC_SW_RST[%llx]\n",
5599                         np->port,
5600                         (unsigned long long) nr64_mac(BRXMAC_SW_RST));
5601                 return -ENODEV;
5602         }
5603
5604         return 0;
5605 }
5606
5607 static int niu_reset_rx_mac(struct niu *np)
5608 {
5609         if (np->flags & NIU_FLAGS_XMAC)
5610                 return niu_reset_rx_xmac(np);
5611         else
5612                 return niu_reset_rx_bmac(np);
5613 }
5614
5615 static void niu_init_rx_xmac(struct niu *np)
5616 {
5617         struct niu_parent *parent = np->parent;
5618         struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
5619         int first_rdc_table = tp->first_table_num;
5620         unsigned long i;
5621         u64 val;
5622
5623         nw64_mac(XMAC_ADD_FILT0, 0);
5624         nw64_mac(XMAC_ADD_FILT1, 0);
5625         nw64_mac(XMAC_ADD_FILT2, 0);
5626         nw64_mac(XMAC_ADD_FILT12_MASK, 0);
5627         nw64_mac(XMAC_ADD_FILT00_MASK, 0);
5628         for (i = 0; i < MAC_NUM_HASH; i++)
5629                 nw64_mac(XMAC_HASH_TBL(i), 0);
5630         nw64_mac(XRXMAC_STAT_MSK, ~(u64)0);
5631         niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
5632         niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
5633
5634         val = nr64_mac(XMAC_CONFIG);
5635         val &= ~(XMAC_CONFIG_RX_MAC_ENABLE |
5636                  XMAC_CONFIG_PROMISCUOUS |
5637                  XMAC_CONFIG_PROMISC_GROUP |
5638                  XMAC_CONFIG_ERR_CHK_DIS |
5639                  XMAC_CONFIG_RX_CRC_CHK_DIS |
5640                  XMAC_CONFIG_RESERVED_MULTICAST |
5641                  XMAC_CONFIG_RX_CODEV_CHK_DIS |
5642                  XMAC_CONFIG_ADDR_FILTER_EN |
5643                  XMAC_CONFIG_RCV_PAUSE_ENABLE |
5644                  XMAC_CONFIG_STRIP_CRC |
5645                  XMAC_CONFIG_PASS_FLOW_CTRL |
5646                  XMAC_CONFIG_MAC2IPP_PKT_CNT_EN);
5647         val |= (XMAC_CONFIG_HASH_FILTER_EN);
5648         nw64_mac(XMAC_CONFIG, val);
5649
5650         nw64_mac(RXMAC_BT_CNT, 0);
5651         nw64_mac(RXMAC_BC_FRM_CNT, 0);
5652         nw64_mac(RXMAC_MC_FRM_CNT, 0);
5653         nw64_mac(RXMAC_FRAG_CNT, 0);
5654         nw64_mac(RXMAC_HIST_CNT1, 0);
5655         nw64_mac(RXMAC_HIST_CNT2, 0);
5656         nw64_mac(RXMAC_HIST_CNT3, 0);
5657         nw64_mac(RXMAC_HIST_CNT4, 0);
5658         nw64_mac(RXMAC_HIST_CNT5, 0);
5659         nw64_mac(RXMAC_HIST_CNT6, 0);
5660         nw64_mac(RXMAC_HIST_CNT7, 0);
5661         nw64_mac(RXMAC_MPSZER_CNT, 0);
5662         nw64_mac(RXMAC_CRC_ER_CNT, 0);
5663         nw64_mac(RXMAC_CD_VIO_CNT, 0);
5664         nw64_mac(LINK_FAULT_CNT, 0);
5665 }
5666
5667 static void niu_init_rx_bmac(struct niu *np)
5668 {
5669         struct niu_parent *parent = np->parent;
5670         struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
5671         int first_rdc_table = tp->first_table_num;
5672         unsigned long i;
5673         u64 val;
5674
5675         nw64_mac(BMAC_ADD_FILT0, 0);
5676         nw64_mac(BMAC_ADD_FILT1, 0);
5677         nw64_mac(BMAC_ADD_FILT2, 0);
5678         nw64_mac(BMAC_ADD_FILT12_MASK, 0);
5679         nw64_mac(BMAC_ADD_FILT00_MASK, 0);
5680         for (i = 0; i < MAC_NUM_HASH; i++)
5681                 nw64_mac(BMAC_HASH_TBL(i), 0);
5682         niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
5683         niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
5684         nw64_mac(BRXMAC_STATUS_MASK, ~(u64)0);
5685
5686         val = nr64_mac(BRXMAC_CONFIG);
5687         val &= ~(BRXMAC_CONFIG_ENABLE |
5688                  BRXMAC_CONFIG_STRIP_PAD |
5689                  BRXMAC_CONFIG_STRIP_FCS |
5690                  BRXMAC_CONFIG_PROMISC |
5691                  BRXMAC_CONFIG_PROMISC_GRP |
5692                  BRXMAC_CONFIG_ADDR_FILT_EN |
5693                  BRXMAC_CONFIG_DISCARD_DIS);
5694         val |= (BRXMAC_CONFIG_HASH_FILT_EN);
5695         nw64_mac(BRXMAC_CONFIG, val);
5696
5697         val = nr64_mac(BMAC_ADDR_CMPEN);
5698         val |= BMAC_ADDR_CMPEN_EN0;
5699         nw64_mac(BMAC_ADDR_CMPEN, val);
5700 }
5701
5702 static void niu_init_rx_mac(struct niu *np)
5703 {
5704         niu_set_primary_mac(np, np->dev->dev_addr);
5705
5706         if (np->flags & NIU_FLAGS_XMAC)
5707                 niu_init_rx_xmac(np);
5708         else
5709                 niu_init_rx_bmac(np);
5710 }
5711
5712 static void niu_enable_tx_xmac(struct niu *np, int on)
5713 {
5714         u64 val = nr64_mac(XMAC_CONFIG);
5715
5716         if (on)
5717                 val |= XMAC_CONFIG_TX_ENABLE;
5718         else
5719                 val &= ~XMAC_CONFIG_TX_ENABLE;
5720         nw64_mac(XMAC_CONFIG, val);
5721 }
5722
5723 static void niu_enable_tx_bmac(struct niu *np, int on)
5724 {
5725         u64 val = nr64_mac(BTXMAC_CONFIG);
5726
5727         if (on)
5728                 val |= BTXMAC_CONFIG_ENABLE;
5729         else
5730                 val &= ~BTXMAC_CONFIG_ENABLE;
5731         nw64_mac(BTXMAC_CONFIG, val);
5732 }
5733
5734 static void niu_enable_tx_mac(struct niu *np, int on)
5735 {
5736         if (np->flags & NIU_FLAGS_XMAC)
5737                 niu_enable_tx_xmac(np, on);
5738         else
5739                 niu_enable_tx_bmac(np, on);
5740 }
5741
5742 static void niu_enable_rx_xmac(struct niu *np, int on)
5743 {
5744         u64 val = nr64_mac(XMAC_CONFIG);
5745
5746         val &= ~(XMAC_CONFIG_HASH_FILTER_EN |
5747                  XMAC_CONFIG_PROMISCUOUS);
5748
5749         if (np->flags & NIU_FLAGS_MCAST)
5750                 val |= XMAC_CONFIG_HASH_FILTER_EN;
5751         if (np->flags & NIU_FLAGS_PROMISC)
5752                 val |= XMAC_CONFIG_PROMISCUOUS;
5753
5754         if (on)
5755                 val |= XMAC_CONFIG_RX_MAC_ENABLE;
5756         else
5757                 val &= ~XMAC_CONFIG_RX_MAC_ENABLE;
5758         nw64_mac(XMAC_CONFIG, val);
5759 }
5760
5761 static void niu_enable_rx_bmac(struct niu *np, int on)
5762 {
5763         u64 val = nr64_mac(BRXMAC_CONFIG);
5764
5765         val &= ~(BRXMAC_CONFIG_HASH_FILT_EN |
5766                  BRXMAC_CONFIG_PROMISC);
5767
5768         if (np->flags & NIU_FLAGS_MCAST)
5769                 val |= BRXMAC_CONFIG_HASH_FILT_EN;
5770         if (np->flags & NIU_FLAGS_PROMISC)
5771                 val |= BRXMAC_CONFIG_PROMISC;
5772
5773         if (on)
5774                 val |= BRXMAC_CONFIG_ENABLE;
5775         else
5776                 val &= ~BRXMAC_CONFIG_ENABLE;
5777         nw64_mac(BRXMAC_CONFIG, val);
5778 }
5779
5780 static void niu_enable_rx_mac(struct niu *np, int on)
5781 {
5782         if (np->flags & NIU_FLAGS_XMAC)
5783                 niu_enable_rx_xmac(np, on);
5784         else
5785                 niu_enable_rx_bmac(np, on);
5786 }
5787
5788 static int niu_init_mac(struct niu *np)
5789 {
5790         int err;
5791
5792         niu_init_xif(np);
5793         err = niu_init_pcs(np);
5794         if (err)
5795                 return err;
5796
5797         err = niu_reset_tx_mac(np);
5798         if (err)
5799                 return err;
5800         niu_init_tx_mac(np);
5801         err = niu_reset_rx_mac(np);
5802         if (err)
5803                 return err;
5804         niu_init_rx_mac(np);
5805
5806         /* This looks hookey but the RX MAC reset we just did will
5807          * undo some of the state we setup in niu_init_tx_mac() so we
5808          * have to call it again.  In particular, the RX MAC reset will
5809          * set the XMAC_MAX register back to it's default value.
5810          */
5811         niu_init_tx_mac(np);
5812         niu_enable_tx_mac(np, 1);
5813
5814         niu_enable_rx_mac(np, 1);
5815
5816         return 0;
5817 }
5818
5819 static void niu_stop_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
5820 {
5821         (void) niu_tx_channel_stop(np, rp->tx_channel);
5822 }
5823
5824 static void niu_stop_tx_channels(struct niu *np)
5825 {
5826         int i;
5827
5828         for (i = 0; i < np->num_tx_rings; i++) {
5829                 struct tx_ring_info *rp = &np->tx_rings[i];
5830
5831                 niu_stop_one_tx_channel(np, rp);
5832         }
5833 }
5834
5835 static void niu_reset_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
5836 {
5837         (void) niu_tx_channel_reset(np, rp->tx_channel);
5838 }
5839
5840 static void niu_reset_tx_channels(struct niu *np)
5841 {
5842         int i;
5843
5844         for (i = 0; i < np->num_tx_rings; i++) {
5845                 struct tx_ring_info *rp = &np->tx_rings[i];
5846
5847                 niu_reset_one_tx_channel(np, rp);
5848         }
5849 }
5850
5851 static void niu_stop_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
5852 {
5853         (void) niu_enable_rx_channel(np, rp->rx_channel, 0);
5854 }
5855
5856 static void niu_stop_rx_channels(struct niu *np)
5857 {
5858         int i;
5859
5860         for (i = 0; i < np->num_rx_rings; i++) {
5861                 struct rx_ring_info *rp = &np->rx_rings[i];
5862
5863                 niu_stop_one_rx_channel(np, rp);
5864         }
5865 }
5866
5867 static void niu_reset_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
5868 {
5869         int channel = rp->rx_channel;
5870
5871         (void) niu_rx_channel_reset(np, channel);
5872         nw64(RX_DMA_ENT_MSK(channel), RX_DMA_ENT_MSK_ALL);
5873         nw64(RX_DMA_CTL_STAT(channel), 0);
5874         (void) niu_enable_rx_channel(np, channel, 0);
5875 }
5876
5877 static void niu_reset_rx_channels(struct niu *np)
5878 {
5879         int i;
5880
5881         for (i = 0; i < np->num_rx_rings; i++) {
5882                 struct rx_ring_info *rp = &np->rx_rings[i];
5883
5884                 niu_reset_one_rx_channel(np, rp);
5885         }
5886 }
5887
5888 static void niu_disable_ipp(struct niu *np)
5889 {
5890         u64 rd, wr, val;
5891         int limit;
5892
5893         rd = nr64_ipp(IPP_DFIFO_RD_PTR);
5894         wr = nr64_ipp(IPP_DFIFO_WR_PTR);
5895         limit = 100;
5896         while (--limit >= 0 && (rd != wr)) {
5897                 rd = nr64_ipp(IPP_DFIFO_RD_PTR);
5898                 wr = nr64_ipp(IPP_DFIFO_WR_PTR);
5899         }
5900         if (limit < 0 &&
5901             (rd != 0 && wr != 1)) {
5902                 netdev_err(np->dev, "IPP would not quiesce, rd_ptr[%llx] wr_ptr[%llx]\n",
5903                            (unsigned long long)nr64_ipp(IPP_DFIFO_RD_PTR),
5904                            (unsigned long long)nr64_ipp(IPP_DFIFO_WR_PTR));
5905         }
5906
5907         val = nr64_ipp(IPP_CFIG);
5908         val &= ~(IPP_CFIG_IPP_ENABLE |
5909                  IPP_CFIG_DFIFO_ECC_EN |
5910                  IPP_CFIG_DROP_BAD_CRC |
5911                  IPP_CFIG_CKSUM_EN);
5912         nw64_ipp(IPP_CFIG, val);
5913
5914         (void) niu_ipp_reset(np);
5915 }
5916
5917 static int niu_init_hw(struct niu *np)
5918 {
5919         int i, err;
5920
5921         netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize TXC\n");
5922         niu_txc_enable_port(np, 1);
5923         niu_txc_port_dma_enable(np, 1);
5924         niu_txc_set_imask(np, 0);
5925
5926         netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize TX channels\n");
5927         for (i = 0; i < np->num_tx_rings; i++) {
5928                 struct tx_ring_info *rp = &np->tx_rings[i];
5929
5930                 err = niu_init_one_tx_channel(np, rp);
5931                 if (err)
5932                         return err;
5933         }
5934
5935         netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize RX channels\n");
5936         err = niu_init_rx_channels(np);
5937         if (err)
5938                 goto out_uninit_tx_channels;
5939
5940         netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize classifier\n");
5941         err = niu_init_classifier_hw(np);
5942         if (err)
5943                 goto out_uninit_rx_channels;
5944
5945         netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize ZCP\n");
5946         err = niu_init_zcp(np);
5947         if (err)
5948                 goto out_uninit_rx_channels;
5949
5950         netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize IPP\n");
5951         err = niu_init_ipp(np);
5952         if (err)
5953                 goto out_uninit_rx_channels;
5954
5955         netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize MAC\n");
5956         err = niu_init_mac(np);
5957         if (err)
5958                 goto out_uninit_ipp;
5959
5960         return 0;
5961
5962 out_uninit_ipp:
5963         netif_printk(np, ifup, KERN_DEBUG, np->dev, "Uninit IPP\n");
5964         niu_disable_ipp(np);
5965
5966 out_uninit_rx_channels:
5967         netif_printk(np, ifup, KERN_DEBUG, np->dev, "Uninit RX channels\n");
5968         niu_stop_rx_channels(np);
5969         niu_reset_rx_channels(np);
5970
5971 out_uninit_tx_channels:
5972         netif_printk(np, ifup, KERN_DEBUG, np->dev, "Uninit TX channels\n");
5973         niu_stop_tx_channels(np);
5974         niu_reset_tx_channels(np);
5975
5976         return err;
5977 }
5978
5979 static void niu_stop_hw(struct niu *np)
5980 {
5981         netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Disable interrupts\n");
5982         niu_enable_interrupts(np, 0);
5983
5984         netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Disable RX MAC\n");
5985         niu_enable_rx_mac(np, 0);
5986
5987         netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Disable IPP\n");
5988         niu_disable_ipp(np);
5989
5990         netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Stop TX channels\n");
5991         niu_stop_tx_channels(np);
5992
5993         netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Stop RX channels\n");
5994         niu_stop_rx_channels(np);
5995
5996         netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Reset TX channels\n");
5997         niu_reset_tx_channels(np);
5998
5999         netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Reset RX channels\n");
6000         niu_reset_rx_channels(np);
6001 }
6002
6003 static void niu_set_irq_name(struct niu *np)
6004 {
6005         int port = np->port;
6006         int i, j = 1;
6007
6008         sprintf(np->irq_name[0], "%s:MAC", np->dev->name);
6009
6010         if (port == 0) {
6011                 sprintf(np->irq_name[1], "%s:MIF", np->dev->name);
6012                 sprintf(np->irq_name[2], "%s:SYSERR", np->dev->name);
6013                 j = 3;
6014         }
6015
6016         for (i = 0; i < np->num_ldg - j; i++) {
6017                 if (i < np->num_rx_rings)
6018                         sprintf(np->irq_name[i+j], "%s-rx-%d",
6019                                 np->dev->name, i);
6020                 else if (i < np->num_tx_rings + np->num_rx_rings)
6021                         sprintf(np->irq_name[i+j], "%s-tx-%d", np->dev->name,
6022                                 i - np->num_rx_rings);
6023         }
6024 }
6025
6026 static int niu_request_irq(struct niu *np)
6027 {
6028         int i, j, err;
6029
6030         niu_set_irq_name(np);
6031
6032         err = 0;
6033         for (i = 0; i < np->num_ldg; i++) {
6034                 struct niu_ldg *lp = &np->ldg[i];
6035
6036                 err = request_irq(lp->irq, niu_interrupt, IRQF_SHARED,
6037                                   np->irq_name[i], lp);
6038                 if (err)
6039                         goto out_free_irqs;
6040
6041         }
6042
6043         return 0;
6044
6045 out_free_irqs:
6046         for (j = 0; j < i; j++) {
6047                 struct niu_ldg *lp = &np->ldg[j];
6048
6049                 free_irq(lp->irq, lp);
6050         }
6051         return err;
6052 }
6053
6054 static void niu_free_irq(struct niu *np)
6055 {
6056         int i;
6057
6058         for (i = 0; i < np->num_ldg; i++) {
6059                 struct niu_ldg *lp = &np->ldg[i];
6060
6061                 free_irq(lp->irq, lp);
6062         }
6063 }
6064
6065 static void niu_enable_napi(struct niu *np)
6066 {
6067         int i;
6068
6069         for (i = 0; i < np->num_ldg; i++)
6070                 napi_enable(&np->ldg[i].napi);
6071 }
6072
6073 static void niu_disable_napi(struct niu *np)
6074 {
6075         int i;
6076
6077         for (i = 0; i < np->num_ldg; i++)
6078                 napi_disable(&np->ldg[i].napi);
6079 }
6080
6081 static int niu_open(struct net_device *dev)
6082 {
6083         struct niu *np = netdev_priv(dev);
6084         int err;
6085
6086         netif_carrier_off(dev);
6087
6088         err = niu_alloc_channels(np);
6089         if (err)
6090                 goto out_err;
6091
6092         err = niu_enable_interrupts(np, 0);
6093         if (err)
6094                 goto out_free_channels;
6095
6096         err = niu_request_irq(np);
6097         if (err)
6098                 goto out_free_channels;
6099
6100         niu_enable_napi(np);
6101
6102         spin_lock_irq(&np->lock);
6103
6104         err = niu_init_hw(np);
6105         if (!err) {
6106                 timer_setup(&np->timer, niu_timer, 0);
6107                 np->timer.expires = jiffies + HZ;
6108
6109                 err = niu_enable_interrupts(np, 1);
6110                 if (err)
6111                         niu_stop_hw(np);
6112         }
6113
6114         spin_unlock_irq(&np->lock);
6115
6116         if (err) {
6117                 niu_disable_napi(np);
6118                 goto out_free_irq;
6119         }
6120
6121         netif_tx_start_all_queues(dev);
6122
6123         if (np->link_config.loopback_mode != LOOPBACK_DISABLED)
6124                 netif_carrier_on(dev);
6125
6126         add_timer(&np->timer);
6127
6128         return 0;
6129
6130 out_free_irq:
6131         niu_free_irq(np);
6132
6133 out_free_channels:
6134         niu_free_channels(np);
6135
6136 out_err:
6137         return err;
6138 }
6139
6140 static void niu_full_shutdown(struct niu *np, struct net_device *dev)
6141 {
6142         cancel_work_sync(&np->reset_task);
6143
6144         niu_disable_napi(np);
6145         netif_tx_stop_all_queues(dev);
6146
6147         del_timer_sync(&np->timer);
6148
6149         spin_lock_irq(&np->lock);
6150
6151         niu_stop_hw(np);
6152
6153         spin_unlock_irq(&np->lock);
6154 }
6155
6156 static int niu_close(struct net_device *dev)
6157 {
6158         struct niu *np = netdev_priv(dev);
6159
6160         niu_full_shutdown(np, dev);
6161
6162         niu_free_irq(np);
6163
6164         niu_free_channels(np);
6165
6166         niu_handle_led(np, 0);
6167
6168         return 0;
6169 }
6170
6171 static void niu_sync_xmac_stats(struct niu *np)
6172 {
6173         struct niu_xmac_stats *mp = &np->mac_stats.xmac;
6174
6175         mp->tx_frames += nr64_mac(TXMAC_FRM_CNT);
6176         mp->tx_bytes += nr64_mac(TXMAC_BYTE_CNT);
6177
6178         mp->rx_link_faults += nr64_mac(LINK_FAULT_CNT);
6179         mp->rx_align_errors += nr64_mac(RXMAC_ALIGN_ERR_CNT);
6180         mp->rx_frags += nr64_mac(RXMAC_FRAG_CNT);
6181         mp->rx_mcasts += nr64_mac(RXMAC_MC_FRM_CNT);
6182         mp->rx_bcasts += nr64_mac(RXMAC_BC_FRM_CNT);
6183         mp->rx_hist_cnt1 += nr64_mac(RXMAC_HIST_CNT1);
6184         mp->rx_hist_cnt2 += nr64_mac(RXMAC_HIST_CNT2);
6185         mp->rx_hist_cnt3 += nr64_mac(RXMAC_HIST_CNT3);
6186         mp->rx_hist_cnt4 += nr64_mac(RXMAC_HIST_CNT4);
6187         mp->rx_hist_cnt5 += nr64_mac(RXMAC_HIST_CNT5);
6188         mp->rx_hist_cnt6 += nr64_mac(RXMAC_HIST_CNT6);
6189         mp->rx_hist_cnt7 += nr64_mac(RXMAC_HIST_CNT7);
6190         mp->rx_octets += nr64_mac(RXMAC_BT_CNT);
6191         mp->rx_code_violations += nr64_mac(RXMAC_CD_VIO_CNT);
6192         mp->rx_len_errors += nr64_mac(RXMAC_MPSZER_CNT);
6193         mp->rx_crc_errors += nr64_mac(RXMAC_CRC_ER_CNT);
6194 }
6195
6196 static void niu_sync_bmac_stats(struct niu *np)
6197 {
6198         struct niu_bmac_stats *mp = &np->mac_stats.bmac;
6199
6200         mp->tx_bytes += nr64_mac(BTXMAC_BYTE_CNT);
6201         mp->tx_frames += nr64_mac(BTXMAC_FRM_CNT);
6202
6203         mp->rx_frames += nr64_mac(BRXMAC_FRAME_CNT);
6204         mp->rx_align_errors += nr64_mac(BRXMAC_ALIGN_ERR_CNT);
6205         mp->rx_crc_errors += nr64_mac(BRXMAC_ALIGN_ERR_CNT);
6206         mp->rx_len_errors += nr64_mac(BRXMAC_CODE_VIOL_ERR_CNT);
6207 }
6208
6209 static void niu_sync_mac_stats(struct niu *np)
6210 {
6211         if (np->flags & NIU_FLAGS_XMAC)
6212                 niu_sync_xmac_stats(np);
6213         else
6214                 niu_sync_bmac_stats(np);
6215 }
6216
6217 static void niu_get_rx_stats(struct niu *np,
6218                              struct rtnl_link_stats64 *stats)
6219 {
6220         u64 pkts, dropped, errors, bytes;
6221         struct rx_ring_info *rx_rings;
6222         int i;
6223
6224         pkts = dropped = errors = bytes = 0;
6225
6226         rx_rings = READ_ONCE(np->rx_rings);
6227         if (!rx_rings)
6228                 goto no_rings;
6229
6230         for (i = 0; i < np->num_rx_rings; i++) {
6231                 struct rx_ring_info *rp = &rx_rings[i];
6232
6233                 niu_sync_rx_discard_stats(np, rp, 0);
6234
6235                 pkts += rp->rx_packets;
6236                 bytes += rp->rx_bytes;
6237                 dropped += rp->rx_dropped;
6238                 errors += rp->rx_errors;
6239         }
6240
6241 no_rings:
6242         stats->rx_packets = pkts;
6243         stats->rx_bytes = bytes;
6244         stats->rx_dropped = dropped;
6245         stats->rx_errors = errors;
6246 }
6247
6248 static void niu_get_tx_stats(struct niu *np,
6249                              struct rtnl_link_stats64 *stats)
6250 {
6251         u64 pkts, errors, bytes;
6252         struct tx_ring_info *tx_rings;
6253         int i;
6254
6255         pkts = errors = bytes = 0;
6256
6257         tx_rings = READ_ONCE(np->tx_rings);
6258         if (!tx_rings)
6259                 goto no_rings;
6260
6261         for (i = 0; i < np->num_tx_rings; i++) {
6262                 struct tx_ring_info *rp = &tx_rings[i];
6263
6264                 pkts += rp->tx_packets;
6265                 bytes += rp->tx_bytes;
6266                 errors += rp->tx_errors;
6267         }
6268
6269 no_rings:
6270         stats->tx_packets = pkts;
6271         stats->tx_bytes = bytes;
6272         stats->tx_errors = errors;
6273 }
6274
6275 static void niu_get_stats(struct net_device *dev,
6276                           struct rtnl_link_stats64 *stats)
6277 {
6278         struct niu *np = netdev_priv(dev);
6279
6280         if (netif_running(dev)) {
6281                 niu_get_rx_stats(np, stats);
6282                 niu_get_tx_stats(np, stats);
6283         }
6284 }
6285
6286 static void niu_load_hash_xmac(struct niu *np, u16 *hash)
6287 {
6288         int i;
6289
6290         for (i = 0; i < 16; i++)
6291                 nw64_mac(XMAC_HASH_TBL(i), hash[i]);
6292 }
6293
6294 static void niu_load_hash_bmac(struct niu *np, u16 *hash)
6295 {
6296         int i;
6297
6298         for (i = 0; i < 16; i++)
6299                 nw64_mac(BMAC_HASH_TBL(i), hash[i]);
6300 }
6301
6302 static void niu_load_hash(struct niu *np, u16 *hash)
6303 {
6304         if (np->flags & NIU_FLAGS_XMAC)
6305                 niu_load_hash_xmac(np, hash);
6306         else
6307                 niu_load_hash_bmac(np, hash);
6308 }
6309
6310 static void niu_set_rx_mode(struct net_device *dev)
6311 {
6312         struct niu *np = netdev_priv(dev);
6313         int i, alt_cnt, err;
6314         struct netdev_hw_addr *ha;
6315         unsigned long flags;
6316         u16 hash[16] = { 0, };
6317
6318         spin_lock_irqsave(&np->lock, flags);
6319         niu_enable_rx_mac(np, 0);
6320
6321         np->flags &= ~(NIU_FLAGS_MCAST | NIU_FLAGS_PROMISC);
6322         if (dev->flags & IFF_PROMISC)
6323                 np->flags |= NIU_FLAGS_PROMISC;
6324         if ((dev->flags & IFF_ALLMULTI) || (!netdev_mc_empty(dev)))
6325                 np->flags |= NIU_FLAGS_MCAST;
6326
6327         alt_cnt = netdev_uc_count(dev);
6328         if (alt_cnt > niu_num_alt_addr(np)) {
6329                 alt_cnt = 0;
6330                 np->flags |= NIU_FLAGS_PROMISC;
6331         }
6332
6333         if (alt_cnt) {
6334                 int index = 0;
6335
6336                 netdev_for_each_uc_addr(ha, dev) {
6337                         err = niu_set_alt_mac(np, index, ha->addr);
6338                         if (err)
6339                                 netdev_warn(dev, "Error %d adding alt mac %d\n",
6340                                             err, index);
6341                         err = niu_enable_alt_mac(np, index, 1);
6342                         if (err)
6343                                 netdev_warn(dev, "Error %d enabling alt mac %d\n",
6344                                             err, index);
6345
6346                         index++;
6347                 }
6348         } else {
6349                 int alt_start;
6350                 if (np->flags & NIU_FLAGS_XMAC)
6351                         alt_start = 0;
6352                 else
6353                         alt_start = 1;
6354                 for (i = alt_start; i < niu_num_alt_addr(np); i++) {
6355                         err = niu_enable_alt_mac(np, i, 0);
6356                         if (err)
6357                                 netdev_warn(dev, "Error %d disabling alt mac %d\n",
6358                                             err, i);
6359                 }
6360         }
6361         if (dev->flags & IFF_ALLMULTI) {
6362                 for (i = 0; i < 16; i++)
6363                         hash[i] = 0xffff;
6364         } else if (!netdev_mc_empty(dev)) {
6365                 netdev_for_each_mc_addr(ha, dev) {
6366                         u32 crc = ether_crc_le(ETH_ALEN, ha->addr);
6367
6368                         crc >>= 24;
6369                         hash[crc >> 4] |= (1 << (15 - (crc & 0xf)));
6370                 }
6371         }
6372
6373         if (np->flags & NIU_FLAGS_MCAST)
6374                 niu_load_hash(np, hash);
6375
6376         niu_enable_rx_mac(np, 1);
6377         spin_unlock_irqrestore(&np->lock, flags);
6378 }
6379
6380 static int niu_set_mac_addr(struct net_device *dev, void *p)
6381 {
6382         struct niu *np = netdev_priv(dev);
6383         struct sockaddr *addr = p;
6384         unsigned long flags;
6385
6386         if (!is_valid_ether_addr(addr->sa_data))
6387                 return -EADDRNOTAVAIL;
6388
6389         memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
6390
6391         if (!netif_running(dev))
6392                 return 0;
6393
6394         spin_lock_irqsave(&np->lock, flags);
6395         niu_enable_rx_mac(np, 0);
6396         niu_set_primary_mac(np, dev->dev_addr);
6397         niu_enable_rx_mac(np, 1);
6398         spin_unlock_irqrestore(&np->lock, flags);
6399
6400         return 0;
6401 }
6402
6403 static int niu_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
6404 {
6405         return -EOPNOTSUPP;
6406 }
6407
6408 static void niu_netif_stop(struct niu *np)
6409 {
6410         netif_trans_update(np->dev);    /* prevent tx timeout */
6411
6412         niu_disable_napi(np);
6413
6414         netif_tx_disable(np->dev);
6415 }
6416
6417 static void niu_netif_start(struct niu *np)
6418 {
6419         /* NOTE: unconditional netif_wake_queue is only appropriate
6420          * so long as all callers are assured to have free tx slots
6421          * (such as after niu_init_hw).
6422          */
6423         netif_tx_wake_all_queues(np->dev);
6424
6425         niu_enable_napi(np);
6426
6427         niu_enable_interrupts(np, 1);
6428 }
6429
6430 static void niu_reset_buffers(struct niu *np)
6431 {
6432         int i, j, k, err;
6433
6434         if (np->rx_rings) {
6435                 for (i = 0; i < np->num_rx_rings; i++) {
6436                         struct rx_ring_info *rp = &np->rx_rings[i];
6437
6438                         for (j = 0, k = 0; j < MAX_RBR_RING_SIZE; j++) {
6439                                 struct page *page;
6440
6441                                 page = rp->rxhash[j];
6442                                 while (page) {
6443                                         struct page *next =
6444                                                 (struct page *) page->mapping;
6445                                         u64 base = page->index;
6446                                         base = base >> RBR_DESCR_ADDR_SHIFT;
6447                                         rp->rbr[k++] = cpu_to_le32(base);
6448                                         page = next;
6449                                 }
6450                         }
6451                         for (; k < MAX_RBR_RING_SIZE; k++) {
6452                                 err = niu_rbr_add_page(np, rp, GFP_ATOMIC, k);
6453                                 if (unlikely(err))
6454                                         break;
6455                         }
6456
6457                         rp->rbr_index = rp->rbr_table_size - 1;
6458                         rp->rcr_index = 0;
6459                         rp->rbr_pending = 0;
6460                         rp->rbr_refill_pending = 0;
6461                 }
6462         }
6463         if (np->tx_rings) {
6464                 for (i = 0; i < np->num_tx_rings; i++) {
6465                         struct tx_ring_info *rp = &np->tx_rings[i];
6466
6467                         for (j = 0; j < MAX_TX_RING_SIZE; j++) {
6468                                 if (rp->tx_buffs[j].skb)
6469                                         (void) release_tx_packet(np, rp, j);
6470                         }
6471
6472                         rp->pending = MAX_TX_RING_SIZE;
6473                         rp->prod = 0;
6474                         rp->cons = 0;
6475                         rp->wrap_bit = 0;
6476                 }
6477         }
6478 }
6479
6480 static void niu_reset_task(struct work_struct *work)
6481 {
6482         struct niu *np = container_of(work, struct niu, reset_task);
6483         unsigned long flags;
6484         int err;
6485
6486         spin_lock_irqsave(&np->lock, flags);
6487         if (!netif_running(np->dev)) {
6488                 spin_unlock_irqrestore(&np->lock, flags);
6489                 return;
6490         }
6491
6492         spin_unlock_irqrestore(&np->lock, flags);
6493
6494         del_timer_sync(&np->timer);
6495
6496         niu_netif_stop(np);
6497
6498         spin_lock_irqsave(&np->lock, flags);
6499
6500         niu_stop_hw(np);
6501
6502         spin_unlock_irqrestore(&np->lock, flags);
6503
6504         niu_reset_buffers(np);
6505
6506         spin_lock_irqsave(&np->lock, flags);
6507
6508         err = niu_init_hw(np);
6509         if (!err) {
6510                 np->timer.expires = jiffies + HZ;
6511                 add_timer(&np->timer);
6512                 niu_netif_start(np);
6513         }
6514
6515         spin_unlock_irqrestore(&np->lock, flags);
6516 }
6517
6518 static void niu_tx_timeout(struct net_device *dev, unsigned int txqueue)
6519 {
6520         struct niu *np = netdev_priv(dev);
6521
6522         dev_err(np->device, "%s: Transmit timed out, resetting\n",
6523                 dev->name);
6524
6525         schedule_work(&np->reset_task);
6526 }
6527
6528 static void niu_set_txd(struct tx_ring_info *rp, int index,
6529                         u64 mapping, u64 len, u64 mark,
6530                         u64 n_frags)
6531 {
6532         __le64 *desc = &rp->descr[index];
6533
6534         *desc = cpu_to_le64(mark |
6535                             (n_frags << TX_DESC_NUM_PTR_SHIFT) |
6536                             (len << TX_DESC_TR_LEN_SHIFT) |
6537                             (mapping & TX_DESC_SAD));
6538 }
6539
6540 static u64 niu_compute_tx_flags(struct sk_buff *skb, struct ethhdr *ehdr,
6541                                 u64 pad_bytes, u64 len)
6542 {
6543         u16 eth_proto, eth_proto_inner;
6544         u64 csum_bits, l3off, ihl, ret;
6545         u8 ip_proto;
6546         int ipv6;
6547
6548         eth_proto = be16_to_cpu(ehdr->h_proto);
6549         eth_proto_inner = eth_proto;
6550         if (eth_proto == ETH_P_8021Q) {
6551                 struct vlan_ethhdr *vp = (struct vlan_ethhdr *) ehdr;
6552                 __be16 val = vp->h_vlan_encapsulated_proto;
6553
6554                 eth_proto_inner = be16_to_cpu(val);
6555         }
6556
6557         ipv6 = ihl = 0;
6558         switch (skb->protocol) {
6559         case cpu_to_be16(ETH_P_IP):
6560                 ip_proto = ip_hdr(skb)->protocol;
6561                 ihl = ip_hdr(skb)->ihl;
6562                 break;
6563         case cpu_to_be16(ETH_P_IPV6):
6564                 ip_proto = ipv6_hdr(skb)->nexthdr;
6565                 ihl = (40 >> 2);
6566                 ipv6 = 1;
6567                 break;
6568         default:
6569                 ip_proto = ihl = 0;
6570                 break;
6571         }
6572
6573         csum_bits = TXHDR_CSUM_NONE;
6574         if (skb->ip_summed == CHECKSUM_PARTIAL) {
6575                 u64 start, stuff;
6576
6577                 csum_bits = (ip_proto == IPPROTO_TCP ?
6578                              TXHDR_CSUM_TCP :
6579                              (ip_proto == IPPROTO_UDP ?
6580                               TXHDR_CSUM_UDP : TXHDR_CSUM_SCTP));
6581
6582                 start = skb_checksum_start_offset(skb) -
6583                         (pad_bytes + sizeof(struct tx_pkt_hdr));
6584                 stuff = start + skb->csum_offset;
6585
6586                 csum_bits |= (start / 2) << TXHDR_L4START_SHIFT;
6587                 csum_bits |= (stuff / 2) << TXHDR_L4STUFF_SHIFT;
6588         }
6589
6590         l3off = skb_network_offset(skb) -
6591                 (pad_bytes + sizeof(struct tx_pkt_hdr));
6592
6593         ret = (((pad_bytes / 2) << TXHDR_PAD_SHIFT) |
6594                (len << TXHDR_LEN_SHIFT) |
6595                ((l3off / 2) << TXHDR_L3START_SHIFT) |
6596                (ihl << TXHDR_IHL_SHIFT) |
6597                ((eth_proto_inner < ETH_P_802_3_MIN) ? TXHDR_LLC : 0) |
6598                ((eth_proto == ETH_P_8021Q) ? TXHDR_VLAN : 0) |
6599                (ipv6 ? TXHDR_IP_VER : 0) |
6600                csum_bits);
6601
6602         return ret;
6603 }
6604
6605 static netdev_tx_t niu_start_xmit(struct sk_buff *skb,
6606                                   struct net_device *dev)
6607 {
6608         struct niu *np = netdev_priv(dev);
6609         unsigned long align, headroom;
6610         struct netdev_queue *txq;
6611         struct tx_ring_info *rp;
6612         struct tx_pkt_hdr *tp;
6613         unsigned int len, nfg;
6614         struct ethhdr *ehdr;
6615         int prod, i, tlen;
6616         u64 mapping, mrk;
6617
6618         i = skb_get_queue_mapping(skb);
6619         rp = &np->tx_rings[i];
6620         txq = netdev_get_tx_queue(dev, i);
6621
6622         if (niu_tx_avail(rp) <= (skb_shinfo(skb)->nr_frags + 1)) {
6623                 netif_tx_stop_queue(txq);
6624                 dev_err(np->device, "%s: BUG! Tx ring full when queue awake!\n", dev->name);
6625                 rp->tx_errors++;
6626                 return NETDEV_TX_BUSY;
6627         }
6628
6629         if (eth_skb_pad(skb))
6630                 goto out;
6631
6632         len = sizeof(struct tx_pkt_hdr) + 15;
6633         if (skb_headroom(skb) < len) {
6634                 struct sk_buff *skb_new;
6635
6636                 skb_new = skb_realloc_headroom(skb, len);
6637                 if (!skb_new)
6638                         goto out_drop;
6639                 kfree_skb(skb);
6640                 skb = skb_new;
6641         } else
6642                 skb_orphan(skb);
6643
6644         align = ((unsigned long) skb->data & (16 - 1));
6645         headroom = align + sizeof(struct tx_pkt_hdr);
6646
6647         ehdr = (struct ethhdr *) skb->data;
6648         tp = skb_push(skb, headroom);
6649
6650         len = skb->len - sizeof(struct tx_pkt_hdr);
6651         tp->flags = cpu_to_le64(niu_compute_tx_flags(skb, ehdr, align, len));
6652         tp->resv = 0;
6653
6654         len = skb_headlen(skb);
6655         mapping = np->ops->map_single(np->device, skb->data,
6656                                       len, DMA_TO_DEVICE);
6657
6658         prod = rp->prod;
6659
6660         rp->tx_buffs[prod].skb = skb;
6661         rp->tx_buffs[prod].mapping = mapping;
6662
6663         mrk = TX_DESC_SOP;
6664         if (++rp->mark_counter == rp->mark_freq) {
6665                 rp->mark_counter = 0;
6666                 mrk |= TX_DESC_MARK;
6667                 rp->mark_pending++;
6668         }
6669
6670         tlen = len;
6671         nfg = skb_shinfo(skb)->nr_frags;
6672         while (tlen > 0) {
6673                 tlen -= MAX_TX_DESC_LEN;
6674                 nfg++;
6675         }
6676
6677         while (len > 0) {
6678                 unsigned int this_len = len;
6679
6680                 if (this_len > MAX_TX_DESC_LEN)
6681                         this_len = MAX_TX_DESC_LEN;
6682
6683                 niu_set_txd(rp, prod, mapping, this_len, mrk, nfg);
6684                 mrk = nfg = 0;
6685
6686                 prod = NEXT_TX(rp, prod);
6687                 mapping += this_len;
6688                 len -= this_len;
6689         }
6690
6691         for (i = 0; i <  skb_shinfo(skb)->nr_frags; i++) {
6692                 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
6693
6694                 len = skb_frag_size(frag);
6695                 mapping = np->ops->map_page(np->device, skb_frag_page(frag),
6696                                             skb_frag_off(frag), len,
6697                                             DMA_TO_DEVICE);
6698
6699                 rp->tx_buffs[prod].skb = NULL;
6700                 rp->tx_buffs[prod].mapping = mapping;
6701
6702                 niu_set_txd(rp, prod, mapping, len, 0, 0);
6703
6704                 prod = NEXT_TX(rp, prod);
6705         }
6706
6707         if (prod < rp->prod)
6708                 rp->wrap_bit ^= TX_RING_KICK_WRAP;
6709         rp->prod = prod;
6710
6711         nw64(TX_RING_KICK(rp->tx_channel), rp->wrap_bit | (prod << 3));
6712
6713         if (unlikely(niu_tx_avail(rp) <= (MAX_SKB_FRAGS + 1))) {
6714                 netif_tx_stop_queue(txq);
6715                 if (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp))
6716                         netif_tx_wake_queue(txq);
6717         }
6718
6719 out:
6720         return NETDEV_TX_OK;
6721
6722 out_drop:
6723         rp->tx_errors++;
6724         kfree_skb(skb);
6725         goto out;
6726 }
6727
6728 static int niu_change_mtu(struct net_device *dev, int new_mtu)
6729 {
6730         struct niu *np = netdev_priv(dev);
6731         int err, orig_jumbo, new_jumbo;
6732
6733         orig_jumbo = (dev->mtu > ETH_DATA_LEN);
6734         new_jumbo = (new_mtu > ETH_DATA_LEN);
6735
6736         dev->mtu = new_mtu;
6737
6738         if (!netif_running(dev) ||
6739             (orig_jumbo == new_jumbo))
6740                 return 0;
6741
6742         niu_full_shutdown(np, dev);
6743
6744         niu_free_channels(np);
6745
6746         niu_enable_napi(np);
6747
6748         err = niu_alloc_channels(np);
6749         if (err)
6750                 return err;
6751
6752         spin_lock_irq(&np->lock);
6753
6754         err = niu_init_hw(np);
6755         if (!err) {
6756                 timer_setup(&np->timer, niu_timer, 0);
6757                 np->timer.expires = jiffies + HZ;
6758
6759                 err = niu_enable_interrupts(np, 1);
6760                 if (err)
6761                         niu_stop_hw(np);
6762         }
6763
6764         spin_unlock_irq(&np->lock);
6765
6766         if (!err) {
6767                 netif_tx_start_all_queues(dev);
6768                 if (np->link_config.loopback_mode != LOOPBACK_DISABLED)
6769                         netif_carrier_on(dev);
6770
6771                 add_timer(&np->timer);
6772         }
6773
6774         return err;
6775 }
6776
6777 static void niu_get_drvinfo(struct net_device *dev,
6778                             struct ethtool_drvinfo *info)
6779 {
6780         struct niu *np = netdev_priv(dev);
6781         struct niu_vpd *vpd = &np->vpd;
6782
6783         strlcpy(info->driver, DRV_MODULE_NAME, sizeof(info->driver));
6784         strlcpy(info->version, DRV_MODULE_VERSION, sizeof(info->version));
6785         snprintf(info->fw_version, sizeof(info->fw_version), "%d.%d",
6786                 vpd->fcode_major, vpd->fcode_minor);
6787         if (np->parent->plat_type != PLAT_TYPE_NIU)
6788                 strlcpy(info->bus_info, pci_name(np->pdev),
6789                         sizeof(info->bus_info));
6790 }
6791
6792 static int niu_get_link_ksettings(struct net_device *dev,
6793                                   struct ethtool_link_ksettings *cmd)
6794 {
6795         struct niu *np = netdev_priv(dev);
6796         struct niu_link_config *lp;
6797
6798         lp = &np->link_config;
6799
6800         memset(cmd, 0, sizeof(*cmd));
6801         cmd->base.phy_address = np->phy_addr;
6802         ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported,
6803                                                 lp->supported);
6804         ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.advertising,
6805                                                 lp->active_advertising);
6806         cmd->base.autoneg = lp->active_autoneg;
6807         cmd->base.speed = lp->active_speed;
6808         cmd->base.duplex = lp->active_duplex;
6809         cmd->base.port = (np->flags & NIU_FLAGS_FIBER) ? PORT_FIBRE : PORT_TP;
6810
6811         return 0;
6812 }
6813
6814 static int niu_set_link_ksettings(struct net_device *dev,
6815                                   const struct ethtool_link_ksettings *cmd)
6816 {
6817         struct niu *np = netdev_priv(dev);
6818         struct niu_link_config *lp = &np->link_config;
6819
6820         ethtool_convert_link_mode_to_legacy_u32(&lp->advertising,
6821                                                 cmd->link_modes.advertising);
6822         lp->speed = cmd->base.speed;
6823         lp->duplex = cmd->base.duplex;
6824         lp->autoneg = cmd->base.autoneg;
6825         return niu_init_link(np);
6826 }
6827
6828 static u32 niu_get_msglevel(struct net_device *dev)
6829 {
6830         struct niu *np = netdev_priv(dev);
6831         return np->msg_enable;
6832 }
6833
6834 static void niu_set_msglevel(struct net_device *dev, u32 value)
6835 {
6836         struct niu *np = netdev_priv(dev);
6837         np->msg_enable = value;
6838 }
6839
6840 static int niu_nway_reset(struct net_device *dev)
6841 {
6842         struct niu *np = netdev_priv(dev);
6843
6844         if (np->link_config.autoneg)
6845                 return niu_init_link(np);
6846
6847         return 0;
6848 }
6849
6850 static int niu_get_eeprom_len(struct net_device *dev)
6851 {
6852         struct niu *np = netdev_priv(dev);
6853
6854         return np->eeprom_len;
6855 }
6856
6857 static int niu_get_eeprom(struct net_device *dev,
6858                           struct ethtool_eeprom *eeprom, u8 *data)
6859 {
6860         struct niu *np = netdev_priv(dev);
6861         u32 offset, len, val;
6862
6863         offset = eeprom->offset;
6864         len = eeprom->len;
6865
6866         if (offset + len < offset)
6867                 return -EINVAL;
6868         if (offset >= np->eeprom_len)
6869                 return -EINVAL;
6870         if (offset + len > np->eeprom_len)
6871                 len = eeprom->len = np->eeprom_len - offset;
6872
6873         if (offset & 3) {
6874                 u32 b_offset, b_count;
6875
6876                 b_offset = offset & 3;
6877                 b_count = 4 - b_offset;
6878                 if (b_count > len)
6879                         b_count = len;
6880
6881                 val = nr64(ESPC_NCR((offset - b_offset) / 4));
6882                 memcpy(data, ((char *)&val) + b_offset, b_count);
6883                 data += b_count;
6884                 len -= b_count;
6885                 offset += b_count;
6886         }
6887         while (len >= 4) {
6888                 val = nr64(ESPC_NCR(offset / 4));
6889                 memcpy(data, &val, 4);
6890                 data += 4;
6891                 len -= 4;
6892                 offset += 4;
6893         }
6894         if (len) {
6895                 val = nr64(ESPC_NCR(offset / 4));
6896                 memcpy(data, &val, len);
6897         }
6898         return 0;
6899 }
6900
6901 static void niu_ethflow_to_l3proto(int flow_type, u8 *pid)
6902 {
6903         switch (flow_type) {
6904         case TCP_V4_FLOW:
6905         case TCP_V6_FLOW:
6906                 *pid = IPPROTO_TCP;
6907                 break;
6908         case UDP_V4_FLOW:
6909         case UDP_V6_FLOW:
6910                 *pid = IPPROTO_UDP;
6911                 break;
6912         case SCTP_V4_FLOW:
6913         case SCTP_V6_FLOW:
6914                 *pid = IPPROTO_SCTP;
6915                 break;
6916         case AH_V4_FLOW:
6917         case AH_V6_FLOW:
6918                 *pid = IPPROTO_AH;
6919                 break;
6920         case ESP_V4_FLOW:
6921         case ESP_V6_FLOW:
6922                 *pid = IPPROTO_ESP;
6923                 break;
6924         default:
6925                 *pid = 0;
6926                 break;
6927         }
6928 }
6929
6930 static int niu_class_to_ethflow(u64 class, int *flow_type)
6931 {
6932         switch (class) {
6933         case CLASS_CODE_TCP_IPV4:
6934                 *flow_type = TCP_V4_FLOW;
6935                 break;
6936         case CLASS_CODE_UDP_IPV4:
6937                 *flow_type = UDP_V4_FLOW;
6938                 break;
6939         case CLASS_CODE_AH_ESP_IPV4:
6940                 *flow_type = AH_V4_FLOW;
6941                 break;
6942         case CLASS_CODE_SCTP_IPV4:
6943                 *flow_type = SCTP_V4_FLOW;
6944                 break;
6945         case CLASS_CODE_TCP_IPV6:
6946                 *flow_type = TCP_V6_FLOW;
6947                 break;
6948         case CLASS_CODE_UDP_IPV6:
6949                 *flow_type = UDP_V6_FLOW;
6950                 break;
6951         case CLASS_CODE_AH_ESP_IPV6:
6952                 *flow_type = AH_V6_FLOW;
6953                 break;
6954         case CLASS_CODE_SCTP_IPV6:
6955                 *flow_type = SCTP_V6_FLOW;
6956                 break;
6957         case CLASS_CODE_USER_PROG1:
6958         case CLASS_CODE_USER_PROG2:
6959         case CLASS_CODE_USER_PROG3:
6960         case CLASS_CODE_USER_PROG4:
6961                 *flow_type = IP_USER_FLOW;
6962                 break;
6963         default:
6964                 return -EINVAL;
6965         }
6966
6967         return 0;
6968 }
6969
6970 static int niu_ethflow_to_class(int flow_type, u64 *class)
6971 {
6972         switch (flow_type) {
6973         case TCP_V4_FLOW:
6974                 *class = CLASS_CODE_TCP_IPV4;
6975                 break;
6976         case UDP_V4_FLOW:
6977                 *class = CLASS_CODE_UDP_IPV4;
6978                 break;
6979         case AH_ESP_V4_FLOW:
6980         case AH_V4_FLOW:
6981         case ESP_V4_FLOW:
6982                 *class = CLASS_CODE_AH_ESP_IPV4;
6983                 break;
6984         case SCTP_V4_FLOW:
6985                 *class = CLASS_CODE_SCTP_IPV4;
6986                 break;
6987         case TCP_V6_FLOW:
6988                 *class = CLASS_CODE_TCP_IPV6;
6989                 break;
6990         case UDP_V6_FLOW:
6991                 *class = CLASS_CODE_UDP_IPV6;
6992                 break;
6993         case AH_ESP_V6_FLOW:
6994         case AH_V6_FLOW:
6995         case ESP_V6_FLOW:
6996                 *class = CLASS_CODE_AH_ESP_IPV6;
6997                 break;
6998         case SCTP_V6_FLOW:
6999                 *class = CLASS_CODE_SCTP_IPV6;
7000                 break;
7001         default:
7002                 return 0;
7003         }
7004
7005         return 1;
7006 }
7007
7008 static u64 niu_flowkey_to_ethflow(u64 flow_key)
7009 {
7010         u64 ethflow = 0;
7011
7012         if (flow_key & FLOW_KEY_L2DA)
7013                 ethflow |= RXH_L2DA;
7014         if (flow_key & FLOW_KEY_VLAN)
7015                 ethflow |= RXH_VLAN;
7016         if (flow_key & FLOW_KEY_IPSA)
7017                 ethflow |= RXH_IP_SRC;
7018         if (flow_key & FLOW_KEY_IPDA)
7019                 ethflow |= RXH_IP_DST;
7020         if (flow_key & FLOW_KEY_PROTO)
7021                 ethflow |= RXH_L3_PROTO;
7022         if (flow_key & (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_0_SHIFT))
7023                 ethflow |= RXH_L4_B_0_1;
7024         if (flow_key & (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_1_SHIFT))
7025                 ethflow |= RXH_L4_B_2_3;
7026
7027         return ethflow;
7028
7029 }
7030
7031 static int niu_ethflow_to_flowkey(u64 ethflow, u64 *flow_key)
7032 {
7033         u64 key = 0;
7034
7035         if (ethflow & RXH_L2DA)
7036                 key |= FLOW_KEY_L2DA;
7037         if (ethflow & RXH_VLAN)
7038                 key |= FLOW_KEY_VLAN;
7039         if (ethflow & RXH_IP_SRC)
7040                 key |= FLOW_KEY_IPSA;
7041         if (ethflow & RXH_IP_DST)
7042                 key |= FLOW_KEY_IPDA;
7043         if (ethflow & RXH_L3_PROTO)
7044                 key |= FLOW_KEY_PROTO;
7045         if (ethflow & RXH_L4_B_0_1)
7046                 key |= (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_0_SHIFT);
7047         if (ethflow & RXH_L4_B_2_3)
7048                 key |= (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_1_SHIFT);
7049
7050         *flow_key = key;
7051
7052         return 1;
7053
7054 }
7055
7056 static int niu_get_hash_opts(struct niu *np, struct ethtool_rxnfc *nfc)
7057 {
7058         u64 class;
7059
7060         nfc->data = 0;
7061
7062         if (!niu_ethflow_to_class(nfc->flow_type, &class))
7063                 return -EINVAL;
7064
7065         if (np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] &
7066             TCAM_KEY_DISC)
7067                 nfc->data = RXH_DISCARD;
7068         else
7069                 nfc->data = niu_flowkey_to_ethflow(np->parent->flow_key[class -
7070                                                       CLASS_CODE_USER_PROG1]);
7071         return 0;
7072 }
7073
7074 static void niu_get_ip4fs_from_tcam_key(struct niu_tcam_entry *tp,
7075                                         struct ethtool_rx_flow_spec *fsp)
7076 {
7077         u32 tmp;
7078         u16 prt;
7079
7080         tmp = (tp->key[3] & TCAM_V4KEY3_SADDR) >> TCAM_V4KEY3_SADDR_SHIFT;
7081         fsp->h_u.tcp_ip4_spec.ip4src = cpu_to_be32(tmp);
7082
7083         tmp = (tp->key[3] & TCAM_V4KEY3_DADDR) >> TCAM_V4KEY3_DADDR_SHIFT;
7084         fsp->h_u.tcp_ip4_spec.ip4dst = cpu_to_be32(tmp);
7085
7086         tmp = (tp->key_mask[3] & TCAM_V4KEY3_SADDR) >> TCAM_V4KEY3_SADDR_SHIFT;
7087         fsp->m_u.tcp_ip4_spec.ip4src = cpu_to_be32(tmp);
7088
7089         tmp = (tp->key_mask[3] & TCAM_V4KEY3_DADDR) >> TCAM_V4KEY3_DADDR_SHIFT;
7090         fsp->m_u.tcp_ip4_spec.ip4dst = cpu_to_be32(tmp);
7091
7092         fsp->h_u.tcp_ip4_spec.tos = (tp->key[2] & TCAM_V4KEY2_TOS) >>
7093                 TCAM_V4KEY2_TOS_SHIFT;
7094         fsp->m_u.tcp_ip4_spec.tos = (tp->key_mask[2] & TCAM_V4KEY2_TOS) >>
7095                 TCAM_V4KEY2_TOS_SHIFT;
7096
7097         switch (fsp->flow_type) {
7098         case TCP_V4_FLOW:
7099         case UDP_V4_FLOW:
7100         case SCTP_V4_FLOW:
7101                 prt = ((tp->key[2] & TCAM_V4KEY2_PORT_SPI) >>
7102                         TCAM_V4KEY2_PORT_SPI_SHIFT) >> 16;
7103                 fsp->h_u.tcp_ip4_spec.psrc = cpu_to_be16(prt);
7104
7105                 prt = ((tp->key[2] & TCAM_V4KEY2_PORT_SPI) >>
7106                         TCAM_V4KEY2_PORT_SPI_SHIFT) & 0xffff;
7107                 fsp->h_u.tcp_ip4_spec.pdst = cpu_to_be16(prt);
7108
7109                 prt = ((tp->key_mask[2] & TCAM_V4KEY2_PORT_SPI) >>
7110                         TCAM_V4KEY2_PORT_SPI_SHIFT) >> 16;
7111                 fsp->m_u.tcp_ip4_spec.psrc = cpu_to_be16(prt);
7112
7113                 prt = ((tp->key_mask[2] & TCAM_V4KEY2_PORT_SPI) >>
7114                          TCAM_V4KEY2_PORT_SPI_SHIFT) & 0xffff;
7115                 fsp->m_u.tcp_ip4_spec.pdst = cpu_to_be16(prt);
7116                 break;
7117         case AH_V4_FLOW:
7118         case ESP_V4_FLOW:
7119                 tmp = (tp->key[2] & TCAM_V4KEY2_PORT_SPI) >>
7120                         TCAM_V4KEY2_PORT_SPI_SHIFT;
7121                 fsp->h_u.ah_ip4_spec.spi = cpu_to_be32(tmp);
7122
7123                 tmp = (tp->key_mask[2] & TCAM_V4KEY2_PORT_SPI) >>
7124                         TCAM_V4KEY2_PORT_SPI_SHIFT;
7125                 fsp->m_u.ah_ip4_spec.spi = cpu_to_be32(tmp);
7126                 break;
7127         case IP_USER_FLOW:
7128                 tmp = (tp->key[2] & TCAM_V4KEY2_PORT_SPI) >>
7129                         TCAM_V4KEY2_PORT_SPI_SHIFT;
7130                 fsp->h_u.usr_ip4_spec.l4_4_bytes = cpu_to_be32(tmp);
7131
7132                 tmp = (tp->key_mask[2] & TCAM_V4KEY2_PORT_SPI) >>
7133                         TCAM_V4KEY2_PORT_SPI_SHIFT;
7134                 fsp->m_u.usr_ip4_spec.l4_4_bytes = cpu_to_be32(tmp);
7135
7136                 fsp->h_u.usr_ip4_spec.proto =
7137                         (tp->key[2] & TCAM_V4KEY2_PROTO) >>
7138                         TCAM_V4KEY2_PROTO_SHIFT;
7139                 fsp->m_u.usr_ip4_spec.proto =
7140                         (tp->key_mask[2] & TCAM_V4KEY2_PROTO) >>
7141                         TCAM_V4KEY2_PROTO_SHIFT;
7142
7143                 fsp->h_u.usr_ip4_spec.ip_ver = ETH_RX_NFC_IP4;
7144                 break;
7145         default:
7146                 break;
7147         }
7148 }
7149
7150 static int niu_get_ethtool_tcam_entry(struct niu *np,
7151                                       struct ethtool_rxnfc *nfc)
7152 {
7153         struct niu_parent *parent = np->parent;
7154         struct niu_tcam_entry *tp;
7155         struct ethtool_rx_flow_spec *fsp = &nfc->fs;
7156         u16 idx;
7157         u64 class;
7158         int ret = 0;
7159
7160         idx = tcam_get_index(np, (u16)nfc->fs.location);
7161
7162         tp = &parent->tcam[idx];
7163         if (!tp->valid) {
7164                 netdev_info(np->dev, "niu%d: entry [%d] invalid for idx[%d]\n",
7165                             parent->index, (u16)nfc->fs.location, idx);
7166                 return -EINVAL;
7167         }
7168
7169         /* fill the flow spec entry */
7170         class = (tp->key[0] & TCAM_V4KEY0_CLASS_CODE) >>
7171                 TCAM_V4KEY0_CLASS_CODE_SHIFT;
7172         ret = niu_class_to_ethflow(class, &fsp->flow_type);
7173         if (ret < 0) {
7174                 netdev_info(np->dev, "niu%d: niu_class_to_ethflow failed\n",
7175                             parent->index);
7176                 goto out;
7177         }
7178
7179         if (fsp->flow_type == AH_V4_FLOW || fsp->flow_type == AH_V6_FLOW) {
7180                 u32 proto = (tp->key[2] & TCAM_V4KEY2_PROTO) >>
7181                         TCAM_V4KEY2_PROTO_SHIFT;
7182                 if (proto == IPPROTO_ESP) {
7183                         if (fsp->flow_type == AH_V4_FLOW)
7184                                 fsp->flow_type = ESP_V4_FLOW;
7185                         else
7186                                 fsp->flow_type = ESP_V6_FLOW;
7187                 }
7188         }
7189
7190         switch (fsp->flow_type) {
7191         case TCP_V4_FLOW:
7192         case UDP_V4_FLOW:
7193         case SCTP_V4_FLOW:
7194         case AH_V4_FLOW:
7195         case ESP_V4_FLOW:
7196                 niu_get_ip4fs_from_tcam_key(tp, fsp);
7197                 break;
7198         case TCP_V6_FLOW:
7199         case UDP_V6_FLOW:
7200         case SCTP_V6_FLOW:
7201         case AH_V6_FLOW:
7202         case ESP_V6_FLOW:
7203                 /* Not yet implemented */
7204                 ret = -EINVAL;
7205                 break;
7206         case IP_USER_FLOW:
7207                 niu_get_ip4fs_from_tcam_key(tp, fsp);
7208                 break;
7209         default:
7210                 ret = -EINVAL;
7211                 break;
7212         }
7213
7214         if (ret < 0)
7215                 goto out;
7216
7217         if (tp->assoc_data & TCAM_ASSOCDATA_DISC)
7218                 fsp->ring_cookie = RX_CLS_FLOW_DISC;
7219         else
7220                 fsp->ring_cookie = (tp->assoc_data & TCAM_ASSOCDATA_OFFSET) >>
7221                         TCAM_ASSOCDATA_OFFSET_SHIFT;
7222
7223         /* put the tcam size here */
7224         nfc->data = tcam_get_size(np);
7225 out:
7226         return ret;
7227 }
7228
7229 static int niu_get_ethtool_tcam_all(struct niu *np,
7230                                     struct ethtool_rxnfc *nfc,
7231                                     u32 *rule_locs)
7232 {
7233         struct niu_parent *parent = np->parent;
7234         struct niu_tcam_entry *tp;
7235         int i, idx, cnt;
7236         unsigned long flags;
7237         int ret = 0;
7238
7239         /* put the tcam size here */
7240         nfc->data = tcam_get_size(np);
7241
7242         niu_lock_parent(np, flags);
7243         for (cnt = 0, i = 0; i < nfc->data; i++) {
7244                 idx = tcam_get_index(np, i);
7245                 tp = &parent->tcam[idx];
7246                 if (!tp->valid)
7247                         continue;
7248                 if (cnt == nfc->rule_cnt) {
7249                         ret = -EMSGSIZE;
7250                         break;
7251                 }
7252                 rule_locs[cnt] = i;
7253                 cnt++;
7254         }
7255         niu_unlock_parent(np, flags);
7256
7257         nfc->rule_cnt = cnt;
7258
7259         return ret;
7260 }
7261
7262 static int niu_get_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
7263                        u32 *rule_locs)
7264 {
7265         struct niu *np = netdev_priv(dev);
7266         int ret = 0;
7267
7268         switch (cmd->cmd) {
7269         case ETHTOOL_GRXFH:
7270                 ret = niu_get_hash_opts(np, cmd);
7271                 break;
7272         case ETHTOOL_GRXRINGS:
7273                 cmd->data = np->num_rx_rings;
7274                 break;
7275         case ETHTOOL_GRXCLSRLCNT:
7276                 cmd->rule_cnt = tcam_get_valid_entry_cnt(np);
7277                 break;
7278         case ETHTOOL_GRXCLSRULE:
7279                 ret = niu_get_ethtool_tcam_entry(np, cmd);
7280                 break;
7281         case ETHTOOL_GRXCLSRLALL:
7282                 ret = niu_get_ethtool_tcam_all(np, cmd, rule_locs);
7283                 break;
7284         default:
7285                 ret = -EINVAL;
7286                 break;
7287         }
7288
7289         return ret;
7290 }
7291
7292 static int niu_set_hash_opts(struct niu *np, struct ethtool_rxnfc *nfc)
7293 {
7294         u64 class;
7295         u64 flow_key = 0;
7296         unsigned long flags;
7297
7298         if (!niu_ethflow_to_class(nfc->flow_type, &class))
7299                 return -EINVAL;
7300
7301         if (class < CLASS_CODE_USER_PROG1 ||
7302             class > CLASS_CODE_SCTP_IPV6)
7303                 return -EINVAL;
7304
7305         if (nfc->data & RXH_DISCARD) {
7306                 niu_lock_parent(np, flags);
7307                 flow_key = np->parent->tcam_key[class -
7308                                                CLASS_CODE_USER_PROG1];
7309                 flow_key |= TCAM_KEY_DISC;
7310                 nw64(TCAM_KEY(class - CLASS_CODE_USER_PROG1), flow_key);
7311                 np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] = flow_key;
7312                 niu_unlock_parent(np, flags);
7313                 return 0;
7314         } else {
7315                 /* Discard was set before, but is not set now */
7316                 if (np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] &
7317                     TCAM_KEY_DISC) {
7318                         niu_lock_parent(np, flags);
7319                         flow_key = np->parent->tcam_key[class -
7320                                                CLASS_CODE_USER_PROG1];
7321                         flow_key &= ~TCAM_KEY_DISC;
7322                         nw64(TCAM_KEY(class - CLASS_CODE_USER_PROG1),
7323                              flow_key);
7324                         np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] =
7325                                 flow_key;
7326                         niu_unlock_parent(np, flags);
7327                 }
7328         }
7329
7330         if (!niu_ethflow_to_flowkey(nfc->data, &flow_key))
7331                 return -EINVAL;
7332
7333         niu_lock_parent(np, flags);
7334         nw64(FLOW_KEY(class - CLASS_CODE_USER_PROG1), flow_key);
7335         np->parent->flow_key[class - CLASS_CODE_USER_PROG1] = flow_key;
7336         niu_unlock_parent(np, flags);
7337
7338         return 0;
7339 }
7340
7341 static void niu_get_tcamkey_from_ip4fs(struct ethtool_rx_flow_spec *fsp,
7342                                        struct niu_tcam_entry *tp,
7343                                        int l2_rdc_tab, u64 class)
7344 {
7345         u8 pid = 0;
7346         u32 sip, dip, sipm, dipm, spi, spim;
7347         u16 sport, dport, spm, dpm;
7348
7349         sip = be32_to_cpu(fsp->h_u.tcp_ip4_spec.ip4src);
7350         sipm = be32_to_cpu(fsp->m_u.tcp_ip4_spec.ip4src);
7351         dip = be32_to_cpu(fsp->h_u.tcp_ip4_spec.ip4dst);
7352         dipm = be32_to_cpu(fsp->m_u.tcp_ip4_spec.ip4dst);
7353
7354         tp->key[0] = class << TCAM_V4KEY0_CLASS_CODE_SHIFT;
7355         tp->key_mask[0] = TCAM_V4KEY0_CLASS_CODE;
7356         tp->key[1] = (u64)l2_rdc_tab << TCAM_V4KEY1_L2RDCNUM_SHIFT;
7357         tp->key_mask[1] = TCAM_V4KEY1_L2RDCNUM;
7358
7359         tp->key[3] = (u64)sip << TCAM_V4KEY3_SADDR_SHIFT;
7360         tp->key[3] |= dip;
7361
7362         tp->key_mask[3] = (u64)sipm << TCAM_V4KEY3_SADDR_SHIFT;
7363         tp->key_mask[3] |= dipm;
7364
7365         tp->key[2] |= ((u64)fsp->h_u.tcp_ip4_spec.tos <<
7366                        TCAM_V4KEY2_TOS_SHIFT);
7367         tp->key_mask[2] |= ((u64)fsp->m_u.tcp_ip4_spec.tos <<
7368                             TCAM_V4KEY2_TOS_SHIFT);
7369         switch (fsp->flow_type) {
7370         case TCP_V4_FLOW:
7371         case UDP_V4_FLOW:
7372         case SCTP_V4_FLOW:
7373                 sport = be16_to_cpu(fsp->h_u.tcp_ip4_spec.psrc);
7374                 spm = be16_to_cpu(fsp->m_u.tcp_ip4_spec.psrc);
7375                 dport = be16_to_cpu(fsp->h_u.tcp_ip4_spec.pdst);
7376                 dpm = be16_to_cpu(fsp->m_u.tcp_ip4_spec.pdst);
7377
7378                 tp->key[2] |= (((u64)sport << 16) | dport);
7379                 tp->key_mask[2] |= (((u64)spm << 16) | dpm);
7380                 niu_ethflow_to_l3proto(fsp->flow_type, &pid);
7381                 break;
7382         case AH_V4_FLOW:
7383         case ESP_V4_FLOW:
7384                 spi = be32_to_cpu(fsp->h_u.ah_ip4_spec.spi);
7385                 spim = be32_to_cpu(fsp->m_u.ah_ip4_spec.spi);
7386
7387                 tp->key[2] |= spi;
7388                 tp->key_mask[2] |= spim;
7389                 niu_ethflow_to_l3proto(fsp->flow_type, &pid);
7390                 break;
7391         case IP_USER_FLOW:
7392                 spi = be32_to_cpu(fsp->h_u.usr_ip4_spec.l4_4_bytes);
7393                 spim = be32_to_cpu(fsp->m_u.usr_ip4_spec.l4_4_bytes);
7394
7395                 tp->key[2] |= spi;
7396                 tp->key_mask[2] |= spim;
7397                 pid = fsp->h_u.usr_ip4_spec.proto;
7398                 break;
7399         default:
7400                 break;
7401         }
7402
7403         tp->key[2] |= ((u64)pid << TCAM_V4KEY2_PROTO_SHIFT);
7404         if (pid) {
7405                 tp->key_mask[2] |= TCAM_V4KEY2_PROTO;
7406         }
7407 }
7408
7409 static int niu_add_ethtool_tcam_entry(struct niu *np,
7410                                       struct ethtool_rxnfc *nfc)
7411 {
7412         struct niu_parent *parent = np->parent;
7413         struct niu_tcam_entry *tp;
7414         struct ethtool_rx_flow_spec *fsp = &nfc->fs;
7415         struct niu_rdc_tables *rdc_table = &parent->rdc_group_cfg[np->port];
7416         int l2_rdc_table = rdc_table->first_table_num;
7417         u16 idx;
7418         u64 class;
7419         unsigned long flags;
7420         int err, ret;
7421
7422         ret = 0;
7423
7424         idx = nfc->fs.location;
7425         if (idx >= tcam_get_size(np))
7426                 return -EINVAL;
7427
7428         if (fsp->flow_type == IP_USER_FLOW) {
7429                 int i;
7430                 int add_usr_cls = 0;
7431                 struct ethtool_usrip4_spec *uspec = &fsp->h_u.usr_ip4_spec;
7432                 struct ethtool_usrip4_spec *umask = &fsp->m_u.usr_ip4_spec;
7433
7434                 if (uspec->ip_ver != ETH_RX_NFC_IP4)
7435                         return -EINVAL;
7436
7437                 niu_lock_parent(np, flags);
7438
7439                 for (i = 0; i < NIU_L3_PROG_CLS; i++) {
7440                         if (parent->l3_cls[i]) {
7441                                 if (uspec->proto == parent->l3_cls_pid[i]) {
7442                                         class = parent->l3_cls[i];
7443                                         parent->l3_cls_refcnt[i]++;
7444                                         add_usr_cls = 1;
7445                                         break;
7446                                 }
7447                         } else {
7448                                 /* Program new user IP class */
7449                                 switch (i) {
7450                                 case 0:
7451                                         class = CLASS_CODE_USER_PROG1;
7452                                         break;
7453                                 case 1:
7454                                         class = CLASS_CODE_USER_PROG2;
7455                                         break;
7456                                 case 2:
7457                                         class = CLASS_CODE_USER_PROG3;
7458                                         break;
7459                                 case 3:
7460                                         class = CLASS_CODE_USER_PROG4;
7461                                         break;
7462                                 default:
7463                                         class = CLASS_CODE_UNRECOG;
7464                                         break;
7465                                 }
7466                                 ret = tcam_user_ip_class_set(np, class, 0,
7467                                                              uspec->proto,
7468                                                              uspec->tos,
7469                                                              umask->tos);
7470                                 if (ret)
7471                                         goto out;
7472
7473                                 ret = tcam_user_ip_class_enable(np, class, 1);
7474                                 if (ret)
7475                                         goto out;
7476                                 parent->l3_cls[i] = class;
7477                                 parent->l3_cls_pid[i] = uspec->proto;
7478                                 parent->l3_cls_refcnt[i]++;
7479                                 add_usr_cls = 1;
7480                                 break;
7481                         }
7482                 }
7483                 if (!add_usr_cls) {
7484                         netdev_info(np->dev, "niu%d: %s(): Could not find/insert class for pid %d\n",
7485                                     parent->index, __func__, uspec->proto);
7486                         ret = -EINVAL;
7487                         goto out;
7488                 }
7489                 niu_unlock_parent(np, flags);
7490         } else {
7491                 if (!niu_ethflow_to_class(fsp->flow_type, &class)) {
7492                         return -EINVAL;
7493                 }
7494         }
7495
7496         niu_lock_parent(np, flags);
7497
7498         idx = tcam_get_index(np, idx);
7499         tp = &parent->tcam[idx];
7500
7501         memset(tp, 0, sizeof(*tp));
7502
7503         /* fill in the tcam key and mask */
7504         switch (fsp->flow_type) {
7505         case TCP_V4_FLOW:
7506         case UDP_V4_FLOW:
7507         case SCTP_V4_FLOW:
7508         case AH_V4_FLOW:
7509         case ESP_V4_FLOW:
7510                 niu_get_tcamkey_from_ip4fs(fsp, tp, l2_rdc_table, class);
7511                 break;
7512         case TCP_V6_FLOW:
7513         case UDP_V6_FLOW:
7514         case SCTP_V6_FLOW:
7515         case AH_V6_FLOW:
7516         case ESP_V6_FLOW:
7517                 /* Not yet implemented */
7518                 netdev_info(np->dev, "niu%d: In %s(): flow %d for IPv6 not implemented\n",
7519                             parent->index, __func__, fsp->flow_type);
7520                 ret = -EINVAL;
7521                 goto out;
7522         case IP_USER_FLOW:
7523                 niu_get_tcamkey_from_ip4fs(fsp, tp, l2_rdc_table, class);
7524                 break;
7525         default:
7526                 netdev_info(np->dev, "niu%d: In %s(): Unknown flow type %d\n",
7527                             parent->index, __func__, fsp->flow_type);
7528                 ret = -EINVAL;
7529                 goto out;
7530         }
7531
7532         /* fill in the assoc data */
7533         if (fsp->ring_cookie == RX_CLS_FLOW_DISC) {
7534                 tp->assoc_data = TCAM_ASSOCDATA_DISC;
7535         } else {
7536                 if (fsp->ring_cookie >= np->num_rx_rings) {
7537                         netdev_info(np->dev, "niu%d: In %s(): Invalid RX ring %lld\n",
7538                                     parent->index, __func__,
7539                                     (long long)fsp->ring_cookie);
7540                         ret = -EINVAL;
7541                         goto out;
7542                 }
7543                 tp->assoc_data = (TCAM_ASSOCDATA_TRES_USE_OFFSET |
7544                                   (fsp->ring_cookie <<
7545                                    TCAM_ASSOCDATA_OFFSET_SHIFT));
7546         }
7547
7548         err = tcam_write(np, idx, tp->key, tp->key_mask);
7549         if (err) {
7550                 ret = -EINVAL;
7551                 goto out;
7552         }
7553         err = tcam_assoc_write(np, idx, tp->assoc_data);
7554         if (err) {
7555                 ret = -EINVAL;
7556                 goto out;
7557         }
7558
7559         /* validate the entry */
7560         tp->valid = 1;
7561         np->clas.tcam_valid_entries++;
7562 out:
7563         niu_unlock_parent(np, flags);
7564
7565         return ret;
7566 }
7567
7568 static int niu_del_ethtool_tcam_entry(struct niu *np, u32 loc)
7569 {
7570         struct niu_parent *parent = np->parent;
7571         struct niu_tcam_entry *tp;
7572         u16 idx;
7573         unsigned long flags;
7574         u64 class;
7575         int ret = 0;
7576
7577         if (loc >= tcam_get_size(np))
7578                 return -EINVAL;
7579
7580         niu_lock_parent(np, flags);
7581
7582         idx = tcam_get_index(np, loc);
7583         tp = &parent->tcam[idx];
7584
7585         /* if the entry is of a user defined class, then update*/
7586         class = (tp->key[0] & TCAM_V4KEY0_CLASS_CODE) >>
7587                 TCAM_V4KEY0_CLASS_CODE_SHIFT;
7588
7589         if (class >= CLASS_CODE_USER_PROG1 && class <= CLASS_CODE_USER_PROG4) {
7590                 int i;
7591                 for (i = 0; i < NIU_L3_PROG_CLS; i++) {
7592                         if (parent->l3_cls[i] == class) {
7593                                 parent->l3_cls_refcnt[i]--;
7594                                 if (!parent->l3_cls_refcnt[i]) {
7595                                         /* disable class */
7596                                         ret = tcam_user_ip_class_enable(np,
7597                                                                         class,
7598                                                                         0);
7599                                         if (ret)
7600                                                 goto out;
7601                                         parent->l3_cls[i] = 0;
7602                                         parent->l3_cls_pid[i] = 0;
7603                                 }
7604                                 break;
7605                         }
7606                 }
7607                 if (i == NIU_L3_PROG_CLS) {
7608                         netdev_info(np->dev, "niu%d: In %s(): Usr class 0x%llx not found\n",
7609                                     parent->index, __func__,
7610                                     (unsigned long long)class);
7611                         ret = -EINVAL;
7612                         goto out;
7613                 }
7614         }
7615
7616         ret = tcam_flush(np, idx);
7617         if (ret)
7618                 goto out;
7619
7620         /* invalidate the entry */
7621         tp->valid = 0;
7622         np->clas.tcam_valid_entries--;
7623 out:
7624         niu_unlock_parent(np, flags);
7625
7626         return ret;
7627 }
7628
7629 static int niu_set_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
7630 {
7631         struct niu *np = netdev_priv(dev);
7632         int ret = 0;
7633
7634         switch (cmd->cmd) {
7635         case ETHTOOL_SRXFH:
7636                 ret = niu_set_hash_opts(np, cmd);
7637                 break;
7638         case ETHTOOL_SRXCLSRLINS:
7639                 ret = niu_add_ethtool_tcam_entry(np, cmd);
7640                 break;
7641         case ETHTOOL_SRXCLSRLDEL:
7642                 ret = niu_del_ethtool_tcam_entry(np, cmd->fs.location);
7643                 break;
7644         default:
7645                 ret = -EINVAL;
7646                 break;
7647         }
7648
7649         return ret;
7650 }
7651
7652 static const struct {
7653         const char string[ETH_GSTRING_LEN];
7654 } niu_xmac_stat_keys[] = {
7655         { "tx_frames" },
7656         { "tx_bytes" },
7657         { "tx_fifo_errors" },
7658         { "tx_overflow_errors" },
7659         { "tx_max_pkt_size_errors" },
7660         { "tx_underflow_errors" },
7661         { "rx_local_faults" },
7662         { "rx_remote_faults" },
7663         { "rx_link_faults" },
7664         { "rx_align_errors" },
7665         { "rx_frags" },
7666         { "rx_mcasts" },
7667         { "rx_bcasts" },
7668         { "rx_hist_cnt1" },
7669         { "rx_hist_cnt2" },
7670         { "rx_hist_cnt3" },
7671         { "rx_hist_cnt4" },
7672         { "rx_hist_cnt5" },
7673         { "rx_hist_cnt6" },
7674         { "rx_hist_cnt7" },
7675         { "rx_octets" },
7676         { "rx_code_violations" },
7677         { "rx_len_errors" },
7678         { "rx_crc_errors" },
7679         { "rx_underflows" },
7680         { "rx_overflows" },
7681         { "pause_off_state" },
7682         { "pause_on_state" },
7683         { "pause_received" },
7684 };
7685
7686 #define NUM_XMAC_STAT_KEYS      ARRAY_SIZE(niu_xmac_stat_keys)
7687
7688 static const struct {
7689         const char string[ETH_GSTRING_LEN];
7690 } niu_bmac_stat_keys[] = {
7691         { "tx_underflow_errors" },
7692         { "tx_max_pkt_size_errors" },
7693         { "tx_bytes" },
7694         { "tx_frames" },
7695         { "rx_overflows" },
7696         { "rx_frames" },
7697         { "rx_align_errors" },
7698         { "rx_crc_errors" },
7699         { "rx_len_errors" },
7700         { "pause_off_state" },
7701         { "pause_on_state" },
7702         { "pause_received" },
7703 };
7704
7705 #define NUM_BMAC_STAT_KEYS      ARRAY_SIZE(niu_bmac_stat_keys)
7706
7707 static const struct {
7708         const char string[ETH_GSTRING_LEN];
7709 } niu_rxchan_stat_keys[] = {
7710         { "rx_channel" },
7711         { "rx_packets" },
7712         { "rx_bytes" },
7713         { "rx_dropped" },
7714         { "rx_errors" },
7715 };
7716
7717 #define NUM_RXCHAN_STAT_KEYS    ARRAY_SIZE(niu_rxchan_stat_keys)
7718
7719 static const struct {
7720         const char string[ETH_GSTRING_LEN];
7721 } niu_txchan_stat_keys[] = {
7722         { "tx_channel" },
7723         { "tx_packets" },
7724         { "tx_bytes" },
7725         { "tx_errors" },
7726 };
7727
7728 #define NUM_TXCHAN_STAT_KEYS    ARRAY_SIZE(niu_txchan_stat_keys)
7729
7730 static void niu_get_strings(struct net_device *dev, u32 stringset, u8 *data)
7731 {
7732         struct niu *np = netdev_priv(dev);
7733         int i;
7734
7735         if (stringset != ETH_SS_STATS)
7736                 return;
7737
7738         if (np->flags & NIU_FLAGS_XMAC) {
7739                 memcpy(data, niu_xmac_stat_keys,
7740                        sizeof(niu_xmac_stat_keys));
7741                 data += sizeof(niu_xmac_stat_keys);
7742         } else {
7743                 memcpy(data, niu_bmac_stat_keys,
7744                        sizeof(niu_bmac_stat_keys));
7745                 data += sizeof(niu_bmac_stat_keys);
7746         }
7747         for (i = 0; i < np->num_rx_rings; i++) {
7748                 memcpy(data, niu_rxchan_stat_keys,
7749                        sizeof(niu_rxchan_stat_keys));
7750                 data += sizeof(niu_rxchan_stat_keys);
7751         }
7752         for (i = 0; i < np->num_tx_rings; i++) {
7753                 memcpy(data, niu_txchan_stat_keys,
7754                        sizeof(niu_txchan_stat_keys));
7755                 data += sizeof(niu_txchan_stat_keys);
7756         }
7757 }
7758
7759 static int niu_get_sset_count(struct net_device *dev, int stringset)
7760 {
7761         struct niu *np = netdev_priv(dev);
7762
7763         if (stringset != ETH_SS_STATS)
7764                 return -EINVAL;
7765
7766         return (np->flags & NIU_FLAGS_XMAC ?
7767                  NUM_XMAC_STAT_KEYS :
7768                  NUM_BMAC_STAT_KEYS) +
7769                 (np->num_rx_rings * NUM_RXCHAN_STAT_KEYS) +
7770                 (np->num_tx_rings * NUM_TXCHAN_STAT_KEYS);
7771 }
7772
7773 static void niu_get_ethtool_stats(struct net_device *dev,
7774                                   struct ethtool_stats *stats, u64 *data)
7775 {
7776         struct niu *np = netdev_priv(dev);
7777         int i;
7778
7779         niu_sync_mac_stats(np);
7780         if (np->flags & NIU_FLAGS_XMAC) {
7781                 memcpy(data, &np->mac_stats.xmac,
7782                        sizeof(struct niu_xmac_stats));
7783                 data += (sizeof(struct niu_xmac_stats) / sizeof(u64));
7784         } else {
7785                 memcpy(data, &np->mac_stats.bmac,
7786                        sizeof(struct niu_bmac_stats));
7787                 data += (sizeof(struct niu_bmac_stats) / sizeof(u64));
7788         }
7789         for (i = 0; i < np->num_rx_rings; i++) {
7790                 struct rx_ring_info *rp = &np->rx_rings[i];
7791
7792                 niu_sync_rx_discard_stats(np, rp, 0);
7793
7794                 data[0] = rp->rx_channel;
7795                 data[1] = rp->rx_packets;
7796                 data[2] = rp->rx_bytes;
7797                 data[3] = rp->rx_dropped;
7798                 data[4] = rp->rx_errors;
7799                 data += 5;
7800         }
7801         for (i = 0; i < np->num_tx_rings; i++) {
7802                 struct tx_ring_info *rp = &np->tx_rings[i];
7803
7804                 data[0] = rp->tx_channel;
7805                 data[1] = rp->tx_packets;
7806                 data[2] = rp->tx_bytes;
7807                 data[3] = rp->tx_errors;
7808                 data += 4;
7809         }
7810 }
7811
7812 static u64 niu_led_state_save(struct niu *np)
7813 {
7814         if (np->flags & NIU_FLAGS_XMAC)
7815                 return nr64_mac(XMAC_CONFIG);
7816         else
7817                 return nr64_mac(BMAC_XIF_CONFIG);
7818 }
7819
7820 static void niu_led_state_restore(struct niu *np, u64 val)
7821 {
7822         if (np->flags & NIU_FLAGS_XMAC)
7823                 nw64_mac(XMAC_CONFIG, val);
7824         else
7825                 nw64_mac(BMAC_XIF_CONFIG, val);
7826 }
7827
7828 static void niu_force_led(struct niu *np, int on)
7829 {
7830         u64 val, reg, bit;
7831
7832         if (np->flags & NIU_FLAGS_XMAC) {
7833                 reg = XMAC_CONFIG;
7834                 bit = XMAC_CONFIG_FORCE_LED_ON;
7835         } else {
7836                 reg = BMAC_XIF_CONFIG;
7837                 bit = BMAC_XIF_CONFIG_LINK_LED;
7838         }
7839
7840         val = nr64_mac(reg);
7841         if (on)
7842                 val |= bit;
7843         else
7844                 val &= ~bit;
7845         nw64_mac(reg, val);
7846 }
7847
7848 static int niu_set_phys_id(struct net_device *dev,
7849                            enum ethtool_phys_id_state state)
7850
7851 {
7852         struct niu *np = netdev_priv(dev);
7853
7854         if (!netif_running(dev))
7855                 return -EAGAIN;
7856
7857         switch (state) {
7858         case ETHTOOL_ID_ACTIVE:
7859                 np->orig_led_state = niu_led_state_save(np);
7860                 return 1;       /* cycle on/off once per second */
7861
7862         case ETHTOOL_ID_ON:
7863                 niu_force_led(np, 1);
7864                 break;
7865
7866         case ETHTOOL_ID_OFF:
7867                 niu_force_led(np, 0);
7868                 break;
7869
7870         case ETHTOOL_ID_INACTIVE:
7871                 niu_led_state_restore(np, np->orig_led_state);
7872         }
7873
7874         return 0;
7875 }
7876
7877 static const struct ethtool_ops niu_ethtool_ops = {
7878         .get_drvinfo            = niu_get_drvinfo,
7879         .get_link               = ethtool_op_get_link,
7880         .get_msglevel           = niu_get_msglevel,
7881         .set_msglevel           = niu_set_msglevel,
7882         .nway_reset             = niu_nway_reset,
7883         .get_eeprom_len         = niu_get_eeprom_len,
7884         .get_eeprom             = niu_get_eeprom,
7885         .get_strings            = niu_get_strings,
7886         .get_sset_count         = niu_get_sset_count,
7887         .get_ethtool_stats      = niu_get_ethtool_stats,
7888         .set_phys_id            = niu_set_phys_id,
7889         .get_rxnfc              = niu_get_nfc,
7890         .set_rxnfc              = niu_set_nfc,
7891         .get_link_ksettings     = niu_get_link_ksettings,
7892         .set_link_ksettings     = niu_set_link_ksettings,
7893 };
7894
7895 static int niu_ldg_assign_ldn(struct niu *np, struct niu_parent *parent,
7896                               int ldg, int ldn)
7897 {
7898         if (ldg < NIU_LDG_MIN || ldg > NIU_LDG_MAX)
7899                 return -EINVAL;
7900         if (ldn < 0 || ldn > LDN_MAX)
7901                 return -EINVAL;
7902
7903         parent->ldg_map[ldn] = ldg;
7904
7905         if (np->parent->plat_type == PLAT_TYPE_NIU) {
7906                 /* On N2 NIU, the ldn-->ldg assignments are setup and fixed by
7907                  * the firmware, and we're not supposed to change them.
7908                  * Validate the mapping, because if it's wrong we probably
7909                  * won't get any interrupts and that's painful to debug.
7910                  */
7911                 if (nr64(LDG_NUM(ldn)) != ldg) {
7912                         dev_err(np->device, "Port %u, mis-matched LDG assignment for ldn %d, should be %d is %llu\n",
7913                                 np->port, ldn, ldg,
7914                                 (unsigned long long) nr64(LDG_NUM(ldn)));
7915                         return -EINVAL;
7916                 }
7917         } else
7918                 nw64(LDG_NUM(ldn), ldg);
7919
7920         return 0;
7921 }
7922
7923 static int niu_set_ldg_timer_res(struct niu *np, int res)
7924 {
7925         if (res < 0 || res > LDG_TIMER_RES_VAL)
7926                 return -EINVAL;
7927
7928
7929         nw64(LDG_TIMER_RES, res);
7930
7931         return 0;
7932 }
7933
7934 static int niu_set_ldg_sid(struct niu *np, int ldg, int func, int vector)
7935 {
7936         if ((ldg < NIU_LDG_MIN || ldg > NIU_LDG_MAX) ||
7937             (func < 0 || func > 3) ||
7938             (vector < 0 || vector > 0x1f))
7939                 return -EINVAL;
7940
7941         nw64(SID(ldg), (func << SID_FUNC_SHIFT) | vector);
7942
7943         return 0;
7944 }
7945
7946 static int niu_pci_eeprom_read(struct niu *np, u32 addr)
7947 {
7948         u64 frame, frame_base = (ESPC_PIO_STAT_READ_START |
7949                                  (addr << ESPC_PIO_STAT_ADDR_SHIFT));
7950         int limit;
7951
7952         if (addr > (ESPC_PIO_STAT_ADDR >> ESPC_PIO_STAT_ADDR_SHIFT))
7953                 return -EINVAL;
7954
7955         frame = frame_base;
7956         nw64(ESPC_PIO_STAT, frame);
7957         limit = 64;
7958         do {
7959                 udelay(5);
7960                 frame = nr64(ESPC_PIO_STAT);
7961                 if (frame & ESPC_PIO_STAT_READ_END)
7962                         break;
7963         } while (limit--);
7964         if (!(frame & ESPC_PIO_STAT_READ_END)) {
7965                 dev_err(np->device, "EEPROM read timeout frame[%llx]\n",
7966                         (unsigned long long) frame);
7967                 return -ENODEV;
7968         }
7969
7970         frame = frame_base;
7971         nw64(ESPC_PIO_STAT, frame);
7972         limit = 64;
7973         do {
7974                 udelay(5);
7975                 frame = nr64(ESPC_PIO_STAT);
7976                 if (frame & ESPC_PIO_STAT_READ_END)
7977                         break;
7978         } while (limit--);
7979         if (!(frame & ESPC_PIO_STAT_READ_END)) {
7980                 dev_err(np->device, "EEPROM read timeout frame[%llx]\n",
7981                         (unsigned long long) frame);
7982                 return -ENODEV;
7983         }
7984
7985         frame = nr64(ESPC_PIO_STAT);
7986         return (frame & ESPC_PIO_STAT_DATA) >> ESPC_PIO_STAT_DATA_SHIFT;
7987 }
7988
7989 static int niu_pci_eeprom_read16(struct niu *np, u32 off)
7990 {
7991         int err = niu_pci_eeprom_read(np, off);
7992         u16 val;
7993
7994         if (err < 0)
7995                 return err;
7996         val = (err << 8);
7997         err = niu_pci_eeprom_read(np, off + 1);
7998         if (err < 0)
7999                 return err;
8000         val |= (err & 0xff);
8001
8002         return val;
8003 }
8004
8005 static int niu_pci_eeprom_read16_swp(struct niu *np, u32 off)
8006 {
8007         int err = niu_pci_eeprom_read(np, off);
8008         u16 val;
8009
8010         if (err < 0)
8011                 return err;
8012
8013         val = (err & 0xff);
8014         err = niu_pci_eeprom_read(np, off + 1);
8015         if (err < 0)
8016                 return err;
8017
8018         val |= (err & 0xff) << 8;
8019
8020         return val;
8021 }
8022
8023 static int niu_pci_vpd_get_propname(struct niu *np, u32 off, char *namebuf,
8024                                     int namebuf_len)
8025 {
8026         int i;
8027
8028         for (i = 0; i < namebuf_len; i++) {
8029                 int err = niu_pci_eeprom_read(np, off + i);
8030                 if (err < 0)
8031                         return err;
8032                 *namebuf++ = err;
8033                 if (!err)
8034                         break;
8035         }
8036         if (i >= namebuf_len)
8037                 return -EINVAL;
8038
8039         return i + 1;
8040 }
8041
8042 static void niu_vpd_parse_version(struct niu *np)
8043 {
8044         struct niu_vpd *vpd = &np->vpd;
8045         int len = strlen(vpd->version) + 1;
8046         const char *s = vpd->version;
8047         int i;
8048
8049         for (i = 0; i < len - 5; i++) {
8050                 if (!strncmp(s + i, "FCode ", 6))
8051                         break;
8052         }
8053         if (i >= len - 5)
8054                 return;
8055
8056         s += i + 5;
8057         sscanf(s, "%d.%d", &vpd->fcode_major, &vpd->fcode_minor);
8058
8059         netif_printk(np, probe, KERN_DEBUG, np->dev,
8060                      "VPD_SCAN: FCODE major(%d) minor(%d)\n",
8061                      vpd->fcode_major, vpd->fcode_minor);
8062         if (vpd->fcode_major > NIU_VPD_MIN_MAJOR ||
8063             (vpd->fcode_major == NIU_VPD_MIN_MAJOR &&
8064              vpd->fcode_minor >= NIU_VPD_MIN_MINOR))
8065                 np->flags |= NIU_FLAGS_VPD_VALID;
8066 }
8067
8068 /* ESPC_PIO_EN_ENABLE must be set */
8069 static int niu_pci_vpd_scan_props(struct niu *np, u32 start, u32 end)
8070 {
8071         unsigned int found_mask = 0;
8072 #define FOUND_MASK_MODEL        0x00000001
8073 #define FOUND_MASK_BMODEL       0x00000002
8074 #define FOUND_MASK_VERS         0x00000004
8075 #define FOUND_MASK_MAC          0x00000008
8076 #define FOUND_MASK_NMAC         0x00000010
8077 #define FOUND_MASK_PHY          0x00000020
8078 #define FOUND_MASK_ALL          0x0000003f
8079
8080         netif_printk(np, probe, KERN_DEBUG, np->dev,
8081                      "VPD_SCAN: start[%x] end[%x]\n", start, end);
8082         while (start < end) {
8083                 int len, err, prop_len;
8084                 char namebuf[64];
8085                 u8 *prop_buf;
8086                 int max_len;
8087
8088                 if (found_mask == FOUND_MASK_ALL) {
8089                         niu_vpd_parse_version(np);
8090                         return 1;
8091                 }
8092
8093                 err = niu_pci_eeprom_read(np, start + 2);
8094                 if (err < 0)
8095                         return err;
8096                 len = err;
8097                 start += 3;
8098
8099                 prop_len = niu_pci_eeprom_read(np, start + 4);
8100                 if (prop_len < 0)
8101                         return prop_len;
8102                 err = niu_pci_vpd_get_propname(np, start + 5, namebuf, 64);
8103                 if (err < 0)
8104                         return err;
8105
8106                 prop_buf = NULL;
8107                 max_len = 0;
8108                 if (!strcmp(namebuf, "model")) {
8109                         prop_buf = np->vpd.model;
8110                         max_len = NIU_VPD_MODEL_MAX;
8111                         found_mask |= FOUND_MASK_MODEL;
8112                 } else if (!strcmp(namebuf, "board-model")) {
8113                         prop_buf = np->vpd.board_model;
8114                         max_len = NIU_VPD_BD_MODEL_MAX;
8115                         found_mask |= FOUND_MASK_BMODEL;
8116                 } else if (!strcmp(namebuf, "version")) {
8117                         prop_buf = np->vpd.version;
8118                         max_len = NIU_VPD_VERSION_MAX;
8119                         found_mask |= FOUND_MASK_VERS;
8120                 } else if (!strcmp(namebuf, "local-mac-address")) {
8121                         prop_buf = np->vpd.local_mac;
8122                         max_len = ETH_ALEN;
8123                         found_mask |= FOUND_MASK_MAC;
8124                 } else if (!strcmp(namebuf, "num-mac-addresses")) {
8125                         prop_buf = &np->vpd.mac_num;
8126                         max_len = 1;
8127                         found_mask |= FOUND_MASK_NMAC;
8128                 } else if (!strcmp(namebuf, "phy-type")) {
8129                         prop_buf = np->vpd.phy_type;
8130                         max_len = NIU_VPD_PHY_TYPE_MAX;
8131                         found_mask |= FOUND_MASK_PHY;
8132                 }
8133
8134                 if (max_len && prop_len > max_len) {
8135                         dev_err(np->device, "Property '%s' length (%d) is too long\n", namebuf, prop_len);
8136                         return -EINVAL;
8137                 }
8138
8139                 if (prop_buf) {
8140                         u32 off = start + 5 + err;
8141                         int i;
8142
8143                         netif_printk(np, probe, KERN_DEBUG, np->dev,
8144                                      "VPD_SCAN: Reading in property [%s] len[%d]\n",
8145                                      namebuf, prop_len);
8146                         for (i = 0; i < prop_len; i++) {
8147                                 err = niu_pci_eeprom_read(np, off + i);
8148                                 if (err >= 0)
8149                                         *prop_buf = err;
8150                                 ++prop_buf;
8151                         }
8152                 }
8153
8154                 start += len;
8155         }
8156
8157         return 0;
8158 }
8159
8160 /* ESPC_PIO_EN_ENABLE must be set */
8161 static void niu_pci_vpd_fetch(struct niu *np, u32 start)
8162 {
8163         u32 offset;
8164         int err;
8165
8166         err = niu_pci_eeprom_read16_swp(np, start + 1);
8167         if (err < 0)
8168                 return;
8169
8170         offset = err + 3;
8171
8172         while (start + offset < ESPC_EEPROM_SIZE) {
8173                 u32 here = start + offset;
8174                 u32 end;
8175
8176                 err = niu_pci_eeprom_read(np, here);
8177                 if (err != 0x90)
8178                         return;
8179
8180                 err = niu_pci_eeprom_read16_swp(np, here + 1);
8181                 if (err < 0)
8182                         return;
8183
8184                 here = start + offset + 3;
8185                 end = start + offset + err;
8186
8187                 offset += err;
8188
8189                 err = niu_pci_vpd_scan_props(np, here, end);
8190                 if (err < 0 || err == 1)
8191                         return;
8192         }
8193 }
8194
8195 /* ESPC_PIO_EN_ENABLE must be set */
8196 static u32 niu_pci_vpd_offset(struct niu *np)
8197 {
8198         u32 start = 0, end = ESPC_EEPROM_SIZE, ret;
8199         int err;
8200
8201         while (start < end) {
8202                 ret = start;
8203
8204                 /* ROM header signature?  */
8205                 err = niu_pci_eeprom_read16(np, start +  0);
8206                 if (err != 0x55aa)
8207                         return 0;
8208
8209                 /* Apply offset to PCI data structure.  */
8210                 err = niu_pci_eeprom_read16(np, start + 23);
8211                 if (err < 0)
8212                         return 0;
8213                 start += err;
8214
8215                 /* Check for "PCIR" signature.  */
8216                 err = niu_pci_eeprom_read16(np, start +  0);
8217                 if (err != 0x5043)
8218                         return 0;
8219                 err = niu_pci_eeprom_read16(np, start +  2);
8220                 if (err != 0x4952)
8221                         return 0;
8222
8223                 /* Check for OBP image type.  */
8224                 err = niu_pci_eeprom_read(np, start + 20);
8225                 if (err < 0)
8226                         return 0;
8227                 if (err != 0x01) {
8228                         err = niu_pci_eeprom_read(np, ret + 2);
8229                         if (err < 0)
8230                                 return 0;
8231
8232                         start = ret + (err * 512);
8233                         continue;
8234                 }
8235
8236                 err = niu_pci_eeprom_read16_swp(np, start + 8);
8237                 if (err < 0)
8238                         return err;
8239                 ret += err;
8240
8241                 err = niu_pci_eeprom_read(np, ret + 0);
8242                 if (err != 0x82)
8243                         return 0;
8244
8245                 return ret;
8246         }
8247
8248         return 0;
8249 }
8250
8251 static int niu_phy_type_prop_decode(struct niu *np, const char *phy_prop)
8252 {
8253         if (!strcmp(phy_prop, "mif")) {
8254                 /* 1G copper, MII */
8255                 np->flags &= ~(NIU_FLAGS_FIBER |
8256                                NIU_FLAGS_10G);
8257                 np->mac_xcvr = MAC_XCVR_MII;
8258         } else if (!strcmp(phy_prop, "xgf")) {
8259                 /* 10G fiber, XPCS */
8260                 np->flags |= (NIU_FLAGS_10G |
8261                               NIU_FLAGS_FIBER);
8262                 np->mac_xcvr = MAC_XCVR_XPCS;
8263         } else if (!strcmp(phy_prop, "pcs")) {
8264                 /* 1G fiber, PCS */
8265                 np->flags &= ~NIU_FLAGS_10G;
8266                 np->flags |= NIU_FLAGS_FIBER;
8267                 np->mac_xcvr = MAC_XCVR_PCS;
8268         } else if (!strcmp(phy_prop, "xgc")) {
8269                 /* 10G copper, XPCS */
8270                 np->flags |= NIU_FLAGS_10G;
8271                 np->flags &= ~NIU_FLAGS_FIBER;
8272                 np->mac_xcvr = MAC_XCVR_XPCS;
8273         } else if (!strcmp(phy_prop, "xgsd") || !strcmp(phy_prop, "gsd")) {
8274                 /* 10G Serdes or 1G Serdes, default to 10G */
8275                 np->flags |= NIU_FLAGS_10G;
8276                 np->flags &= ~NIU_FLAGS_FIBER;
8277                 np->flags |= NIU_FLAGS_XCVR_SERDES;
8278                 np->mac_xcvr = MAC_XCVR_XPCS;
8279         } else {
8280                 return -EINVAL;
8281         }
8282         return 0;
8283 }
8284
8285 static int niu_pci_vpd_get_nports(struct niu *np)
8286 {
8287         int ports = 0;
8288
8289         if ((!strcmp(np->vpd.model, NIU_QGC_LP_MDL_STR)) ||
8290             (!strcmp(np->vpd.model, NIU_QGC_PEM_MDL_STR)) ||
8291             (!strcmp(np->vpd.model, NIU_MARAMBA_MDL_STR)) ||
8292             (!strcmp(np->vpd.model, NIU_KIMI_MDL_STR)) ||
8293             (!strcmp(np->vpd.model, NIU_ALONSO_MDL_STR))) {
8294                 ports = 4;
8295         } else if ((!strcmp(np->vpd.model, NIU_2XGF_LP_MDL_STR)) ||
8296                    (!strcmp(np->vpd.model, NIU_2XGF_PEM_MDL_STR)) ||
8297                    (!strcmp(np->vpd.model, NIU_FOXXY_MDL_STR)) ||
8298                    (!strcmp(np->vpd.model, NIU_2XGF_MRVL_MDL_STR))) {
8299                 ports = 2;
8300         }
8301
8302         return ports;
8303 }
8304
8305 static void niu_pci_vpd_validate(struct niu *np)
8306 {
8307         struct net_device *dev = np->dev;
8308         struct niu_vpd *vpd = &np->vpd;
8309         u8 val8;
8310
8311         if (!is_valid_ether_addr(&vpd->local_mac[0])) {
8312                 dev_err(np->device, "VPD MAC invalid, falling back to SPROM\n");
8313
8314                 np->flags &= ~NIU_FLAGS_VPD_VALID;
8315                 return;
8316         }
8317
8318         if (!strcmp(np->vpd.model, NIU_ALONSO_MDL_STR) ||
8319             !strcmp(np->vpd.model, NIU_KIMI_MDL_STR)) {
8320                 np->flags |= NIU_FLAGS_10G;
8321                 np->flags &= ~NIU_FLAGS_FIBER;
8322                 np->flags |= NIU_FLAGS_XCVR_SERDES;
8323                 np->mac_xcvr = MAC_XCVR_PCS;
8324                 if (np->port > 1) {
8325                         np->flags |= NIU_FLAGS_FIBER;
8326                         np->flags &= ~NIU_FLAGS_10G;
8327                 }
8328                 if (np->flags & NIU_FLAGS_10G)
8329                         np->mac_xcvr = MAC_XCVR_XPCS;
8330         } else if (!strcmp(np->vpd.model, NIU_FOXXY_MDL_STR)) {
8331                 np->flags |= (NIU_FLAGS_10G | NIU_FLAGS_FIBER |
8332                               NIU_FLAGS_HOTPLUG_PHY);
8333         } else if (niu_phy_type_prop_decode(np, np->vpd.phy_type)) {
8334                 dev_err(np->device, "Illegal phy string [%s]\n",
8335                         np->vpd.phy_type);
8336                 dev_err(np->device, "Falling back to SPROM\n");
8337                 np->flags &= ~NIU_FLAGS_VPD_VALID;
8338                 return;
8339         }
8340
8341         memcpy(dev->dev_addr, vpd->local_mac, ETH_ALEN);
8342
8343         val8 = dev->dev_addr[5];
8344         dev->dev_addr[5] += np->port;
8345         if (dev->dev_addr[5] < val8)
8346                 dev->dev_addr[4]++;
8347 }
8348
8349 static int niu_pci_probe_sprom(struct niu *np)
8350 {
8351         struct net_device *dev = np->dev;
8352         int len, i;
8353         u64 val, sum;
8354         u8 val8;
8355
8356         val = (nr64(ESPC_VER_IMGSZ) & ESPC_VER_IMGSZ_IMGSZ);
8357         val >>= ESPC_VER_IMGSZ_IMGSZ_SHIFT;
8358         len = val / 4;
8359
8360         np->eeprom_len = len;
8361
8362         netif_printk(np, probe, KERN_DEBUG, np->dev,
8363                      "SPROM: Image size %llu\n", (unsigned long long)val);
8364
8365         sum = 0;
8366         for (i = 0; i < len; i++) {
8367                 val = nr64(ESPC_NCR(i));
8368                 sum += (val >>  0) & 0xff;
8369                 sum += (val >>  8) & 0xff;
8370                 sum += (val >> 16) & 0xff;
8371                 sum += (val >> 24) & 0xff;
8372         }
8373         netif_printk(np, probe, KERN_DEBUG, np->dev,
8374                      "SPROM: Checksum %x\n", (int)(sum & 0xff));
8375         if ((sum & 0xff) != 0xab) {
8376                 dev_err(np->device, "Bad SPROM checksum (%x, should be 0xab)\n", (int)(sum & 0xff));
8377                 return -EINVAL;
8378         }
8379
8380         val = nr64(ESPC_PHY_TYPE);
8381         switch (np->port) {
8382         case 0:
8383                 val8 = (val & ESPC_PHY_TYPE_PORT0) >>
8384                         ESPC_PHY_TYPE_PORT0_SHIFT;
8385                 break;
8386         case 1:
8387                 val8 = (val & ESPC_PHY_TYPE_PORT1) >>
8388                         ESPC_PHY_TYPE_PORT1_SHIFT;
8389                 break;
8390         case 2:
8391                 val8 = (val & ESPC_PHY_TYPE_PORT2) >>
8392                         ESPC_PHY_TYPE_PORT2_SHIFT;
8393                 break;
8394         case 3:
8395                 val8 = (val & ESPC_PHY_TYPE_PORT3) >>
8396                         ESPC_PHY_TYPE_PORT3_SHIFT;
8397                 break;
8398         default:
8399                 dev_err(np->device, "Bogus port number %u\n",
8400                         np->port);
8401                 return -EINVAL;
8402         }
8403         netif_printk(np, probe, KERN_DEBUG, np->dev,
8404                      "SPROM: PHY type %x\n", val8);
8405
8406         switch (val8) {
8407         case ESPC_PHY_TYPE_1G_COPPER:
8408                 /* 1G copper, MII */
8409                 np->flags &= ~(NIU_FLAGS_FIBER |
8410                                NIU_FLAGS_10G);
8411                 np->mac_xcvr = MAC_XCVR_MII;
8412                 break;
8413
8414         case ESPC_PHY_TYPE_1G_FIBER:
8415                 /* 1G fiber, PCS */
8416                 np->flags &= ~NIU_FLAGS_10G;
8417                 np->flags |= NIU_FLAGS_FIBER;
8418                 np->mac_xcvr = MAC_XCVR_PCS;
8419                 break;
8420
8421         case ESPC_PHY_TYPE_10G_COPPER:
8422                 /* 10G copper, XPCS */
8423                 np->flags |= NIU_FLAGS_10G;
8424                 np->flags &= ~NIU_FLAGS_FIBER;
8425                 np->mac_xcvr = MAC_XCVR_XPCS;
8426                 break;
8427
8428         case ESPC_PHY_TYPE_10G_FIBER:
8429                 /* 10G fiber, XPCS */
8430                 np->flags |= (NIU_FLAGS_10G |
8431                               NIU_FLAGS_FIBER);
8432                 np->mac_xcvr = MAC_XCVR_XPCS;
8433                 break;
8434
8435         default:
8436                 dev_err(np->device, "Bogus SPROM phy type %u\n", val8);
8437                 return -EINVAL;
8438         }
8439
8440         val = nr64(ESPC_MAC_ADDR0);
8441         netif_printk(np, probe, KERN_DEBUG, np->dev,
8442                      "SPROM: MAC_ADDR0[%08llx]\n", (unsigned long long)val);
8443         dev->dev_addr[0] = (val >>  0) & 0xff;
8444         dev->dev_addr[1] = (val >>  8) & 0xff;
8445         dev->dev_addr[2] = (val >> 16) & 0xff;
8446         dev->dev_addr[3] = (val >> 24) & 0xff;
8447
8448         val = nr64(ESPC_MAC_ADDR1);
8449         netif_printk(np, probe, KERN_DEBUG, np->dev,
8450                      "SPROM: MAC_ADDR1[%08llx]\n", (unsigned long long)val);
8451         dev->dev_addr[4] = (val >>  0) & 0xff;
8452         dev->dev_addr[5] = (val >>  8) & 0xff;
8453
8454         if (!is_valid_ether_addr(&dev->dev_addr[0])) {
8455                 dev_err(np->device, "SPROM MAC address invalid [ %pM ]\n",
8456                         dev->dev_addr);
8457                 return -EINVAL;
8458         }
8459
8460         val8 = dev->dev_addr[5];
8461         dev->dev_addr[5] += np->port;
8462         if (dev->dev_addr[5] < val8)
8463                 dev->dev_addr[4]++;
8464
8465         val = nr64(ESPC_MOD_STR_LEN);
8466         netif_printk(np, probe, KERN_DEBUG, np->dev,
8467                      "SPROM: MOD_STR_LEN[%llu]\n", (unsigned long long)val);
8468         if (val >= 8 * 4)
8469                 return -EINVAL;
8470
8471         for (i = 0; i < val; i += 4) {
8472                 u64 tmp = nr64(ESPC_NCR(5 + (i / 4)));
8473
8474                 np->vpd.model[i + 3] = (tmp >>  0) & 0xff;
8475                 np->vpd.model[i + 2] = (tmp >>  8) & 0xff;
8476                 np->vpd.model[i + 1] = (tmp >> 16) & 0xff;
8477                 np->vpd.model[i + 0] = (tmp >> 24) & 0xff;
8478         }
8479         np->vpd.model[val] = '\0';
8480
8481         val = nr64(ESPC_BD_MOD_STR_LEN);
8482         netif_printk(np, probe, KERN_DEBUG, np->dev,
8483                      "SPROM: BD_MOD_STR_LEN[%llu]\n", (unsigned long long)val);
8484         if (val >= 4 * 4)
8485                 return -EINVAL;
8486
8487         for (i = 0; i < val; i += 4) {
8488                 u64 tmp = nr64(ESPC_NCR(14 + (i / 4)));
8489
8490                 np->vpd.board_model[i + 3] = (tmp >>  0) & 0xff;
8491                 np->vpd.board_model[i + 2] = (tmp >>  8) & 0xff;
8492                 np->vpd.board_model[i + 1] = (tmp >> 16) & 0xff;
8493                 np->vpd.board_model[i + 0] = (tmp >> 24) & 0xff;
8494         }
8495         np->vpd.board_model[val] = '\0';
8496
8497         np->vpd.mac_num =
8498                 nr64(ESPC_NUM_PORTS_MACS) & ESPC_NUM_PORTS_MACS_VAL;
8499         netif_printk(np, probe, KERN_DEBUG, np->dev,
8500                      "SPROM: NUM_PORTS_MACS[%d]\n", np->vpd.mac_num);
8501
8502         return 0;
8503 }
8504
8505 static int niu_get_and_validate_port(struct niu *np)
8506 {
8507         struct niu_parent *parent = np->parent;
8508
8509         if (np->port <= 1)
8510                 np->flags |= NIU_FLAGS_XMAC;
8511
8512         if (!parent->num_ports) {
8513                 if (parent->plat_type == PLAT_TYPE_NIU) {
8514                         parent->num_ports = 2;
8515                 } else {
8516                         parent->num_ports = niu_pci_vpd_get_nports(np);
8517                         if (!parent->num_ports) {
8518                                 /* Fall back to SPROM as last resort.
8519                                  * This will fail on most cards.
8520                                  */
8521                                 parent->num_ports = nr64(ESPC_NUM_PORTS_MACS) &
8522                                         ESPC_NUM_PORTS_MACS_VAL;
8523
8524                                 /* All of the current probing methods fail on
8525                                  * Maramba on-board parts.
8526                                  */
8527                                 if (!parent->num_ports)
8528                                         parent->num_ports = 4;
8529                         }
8530                 }
8531         }
8532
8533         if (np->port >= parent->num_ports)
8534                 return -ENODEV;
8535
8536         return 0;
8537 }
8538
8539 static int phy_record(struct niu_parent *parent, struct phy_probe_info *p,
8540                       int dev_id_1, int dev_id_2, u8 phy_port, int type)
8541 {
8542         u32 id = (dev_id_1 << 16) | dev_id_2;
8543         u8 idx;
8544
8545         if (dev_id_1 < 0 || dev_id_2 < 0)
8546                 return 0;
8547         if (type == PHY_TYPE_PMA_PMD || type == PHY_TYPE_PCS) {
8548                 /* Because of the NIU_PHY_ID_MASK being applied, the 8704
8549                  * test covers the 8706 as well.
8550                  */
8551                 if (((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_BCM8704) &&
8552                     ((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_MRVL88X2011))
8553                         return 0;
8554         } else {
8555                 if ((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_BCM5464R)
8556                         return 0;
8557         }
8558
8559         pr_info("niu%d: Found PHY %08x type %s at phy_port %u\n",
8560                 parent->index, id,
8561                 type == PHY_TYPE_PMA_PMD ? "PMA/PMD" :
8562                 type == PHY_TYPE_PCS ? "PCS" : "MII",
8563                 phy_port);
8564
8565         if (p->cur[type] >= NIU_MAX_PORTS) {
8566                 pr_err("Too many PHY ports\n");
8567                 return -EINVAL;
8568         }
8569         idx = p->cur[type];
8570         p->phy_id[type][idx] = id;
8571         p->phy_port[type][idx] = phy_port;
8572         p->cur[type] = idx + 1;
8573         return 0;
8574 }
8575
8576 static int port_has_10g(struct phy_probe_info *p, int port)
8577 {
8578         int i;
8579
8580         for (i = 0; i < p->cur[PHY_TYPE_PMA_PMD]; i++) {
8581                 if (p->phy_port[PHY_TYPE_PMA_PMD][i] == port)
8582                         return 1;
8583         }
8584         for (i = 0; i < p->cur[PHY_TYPE_PCS]; i++) {
8585                 if (p->phy_port[PHY_TYPE_PCS][i] == port)
8586                         return 1;
8587         }
8588
8589         return 0;
8590 }
8591
8592 static int count_10g_ports(struct phy_probe_info *p, int *lowest)
8593 {
8594         int port, cnt;
8595
8596         cnt = 0;
8597         *lowest = 32;
8598         for (port = 8; port < 32; port++) {
8599                 if (port_has_10g(p, port)) {
8600                         if (!cnt)
8601                                 *lowest = port;
8602                         cnt++;
8603                 }
8604         }
8605
8606         return cnt;
8607 }
8608
8609 static int count_1g_ports(struct phy_probe_info *p, int *lowest)
8610 {
8611         *lowest = 32;
8612         if (p->cur[PHY_TYPE_MII])
8613                 *lowest = p->phy_port[PHY_TYPE_MII][0];
8614
8615         return p->cur[PHY_TYPE_MII];
8616 }
8617
8618 static void niu_n2_divide_channels(struct niu_parent *parent)
8619 {
8620         int num_ports = parent->num_ports;
8621         int i;
8622
8623         for (i = 0; i < num_ports; i++) {
8624                 parent->rxchan_per_port[i] = (16 / num_ports);
8625                 parent->txchan_per_port[i] = (16 / num_ports);
8626
8627                 pr_info("niu%d: Port %u [%u RX chans] [%u TX chans]\n",
8628                         parent->index, i,
8629                         parent->rxchan_per_port[i],
8630                         parent->txchan_per_port[i]);
8631         }
8632 }
8633
8634 static void niu_divide_channels(struct niu_parent *parent,
8635                                 int num_10g, int num_1g)
8636 {
8637         int num_ports = parent->num_ports;
8638         int rx_chans_per_10g, rx_chans_per_1g;
8639         int tx_chans_per_10g, tx_chans_per_1g;
8640         int i, tot_rx, tot_tx;
8641
8642         if (!num_10g || !num_1g) {
8643                 rx_chans_per_10g = rx_chans_per_1g =
8644                         (NIU_NUM_RXCHAN / num_ports);
8645                 tx_chans_per_10g = tx_chans_per_1g =
8646                         (NIU_NUM_TXCHAN / num_ports);
8647         } else {
8648                 rx_chans_per_1g = NIU_NUM_RXCHAN / 8;
8649                 rx_chans_per_10g = (NIU_NUM_RXCHAN -
8650                                     (rx_chans_per_1g * num_1g)) /
8651                         num_10g;
8652
8653                 tx_chans_per_1g = NIU_NUM_TXCHAN / 6;
8654                 tx_chans_per_10g = (NIU_NUM_TXCHAN -
8655                                     (tx_chans_per_1g * num_1g)) /
8656                         num_10g;
8657         }
8658
8659         tot_rx = tot_tx = 0;
8660         for (i = 0; i < num_ports; i++) {
8661                 int type = phy_decode(parent->port_phy, i);
8662
8663                 if (type == PORT_TYPE_10G) {
8664                         parent->rxchan_per_port[i] = rx_chans_per_10g;
8665                         parent->txchan_per_port[i] = tx_chans_per_10g;
8666                 } else {
8667                         parent->rxchan_per_port[i] = rx_chans_per_1g;
8668                         parent->txchan_per_port[i] = tx_chans_per_1g;
8669                 }
8670                 pr_info("niu%d: Port %u [%u RX chans] [%u TX chans]\n",
8671                         parent->index, i,
8672                         parent->rxchan_per_port[i],
8673                         parent->txchan_per_port[i]);
8674                 tot_rx += parent->rxchan_per_port[i];
8675                 tot_tx += parent->txchan_per_port[i];
8676         }
8677
8678         if (tot_rx > NIU_NUM_RXCHAN) {
8679                 pr_err("niu%d: Too many RX channels (%d), resetting to one per port\n",
8680                        parent->index, tot_rx);
8681                 for (i = 0; i < num_ports; i++)
8682                         parent->rxchan_per_port[i] = 1;
8683         }
8684         if (tot_tx > NIU_NUM_TXCHAN) {
8685                 pr_err("niu%d: Too many TX channels (%d), resetting to one per port\n",
8686                        parent->index, tot_tx);
8687                 for (i = 0; i < num_ports; i++)
8688                         parent->txchan_per_port[i] = 1;
8689         }
8690         if (tot_rx < NIU_NUM_RXCHAN || tot_tx < NIU_NUM_TXCHAN) {
8691                 pr_warn("niu%d: Driver bug, wasted channels, RX[%d] TX[%d]\n",
8692                         parent->index, tot_rx, tot_tx);
8693         }
8694 }
8695
8696 static void niu_divide_rdc_groups(struct niu_parent *parent,
8697                                   int num_10g, int num_1g)
8698 {
8699         int i, num_ports = parent->num_ports;
8700         int rdc_group, rdc_groups_per_port;
8701         int rdc_channel_base;
8702
8703         rdc_group = 0;
8704         rdc_groups_per_port = NIU_NUM_RDC_TABLES / num_ports;
8705
8706         rdc_channel_base = 0;
8707
8708         for (i = 0; i < num_ports; i++) {
8709                 struct niu_rdc_tables *tp = &parent->rdc_group_cfg[i];
8710                 int grp, num_channels = parent->rxchan_per_port[i];
8711                 int this_channel_offset;
8712
8713                 tp->first_table_num = rdc_group;
8714                 tp->num_tables = rdc_groups_per_port;
8715                 this_channel_offset = 0;
8716                 for (grp = 0; grp < tp->num_tables; grp++) {
8717                         struct rdc_table *rt = &tp->tables[grp];
8718                         int slot;
8719
8720                         pr_info("niu%d: Port %d RDC tbl(%d) [ ",
8721                                 parent->index, i, tp->first_table_num + grp);
8722                         for (slot = 0; slot < NIU_RDC_TABLE_SLOTS; slot++) {
8723                                 rt->rxdma_channel[slot] =
8724                                         rdc_channel_base + this_channel_offset;
8725
8726                                 pr_cont("%d ", rt->rxdma_channel[slot]);
8727
8728                                 if (++this_channel_offset == num_channels)
8729                                         this_channel_offset = 0;
8730                         }
8731                         pr_cont("]\n");
8732                 }
8733
8734                 parent->rdc_default[i] = rdc_channel_base;
8735
8736                 rdc_channel_base += num_channels;
8737                 rdc_group += rdc_groups_per_port;
8738         }
8739 }
8740
8741 static int fill_phy_probe_info(struct niu *np, struct niu_parent *parent,
8742                                struct phy_probe_info *info)
8743 {
8744         unsigned long flags;
8745         int port, err;
8746
8747         memset(info, 0, sizeof(*info));
8748
8749         /* Port 0 to 7 are reserved for onboard Serdes, probe the rest.  */
8750         niu_lock_parent(np, flags);
8751         err = 0;
8752         for (port = 8; port < 32; port++) {
8753                 int dev_id_1, dev_id_2;
8754
8755                 dev_id_1 = mdio_read(np, port,
8756                                      NIU_PMA_PMD_DEV_ADDR, MII_PHYSID1);
8757                 dev_id_2 = mdio_read(np, port,
8758                                      NIU_PMA_PMD_DEV_ADDR, MII_PHYSID2);
8759                 err = phy_record(parent, info, dev_id_1, dev_id_2, port,
8760                                  PHY_TYPE_PMA_PMD);
8761                 if (err)
8762                         break;
8763                 dev_id_1 = mdio_read(np, port,
8764                                      NIU_PCS_DEV_ADDR, MII_PHYSID1);
8765                 dev_id_2 = mdio_read(np, port,
8766                                      NIU_PCS_DEV_ADDR, MII_PHYSID2);
8767                 err = phy_record(parent, info, dev_id_1, dev_id_2, port,
8768                                  PHY_TYPE_PCS);
8769                 if (err)
8770                         break;
8771                 dev_id_1 = mii_read(np, port, MII_PHYSID1);
8772                 dev_id_2 = mii_read(np, port, MII_PHYSID2);
8773                 err = phy_record(parent, info, dev_id_1, dev_id_2, port,
8774                                  PHY_TYPE_MII);
8775                 if (err)
8776                         break;
8777         }
8778         niu_unlock_parent(np, flags);
8779
8780         return err;
8781 }
8782
8783 static int walk_phys(struct niu *np, struct niu_parent *parent)
8784 {
8785         struct phy_probe_info *info = &parent->phy_probe_info;
8786         int lowest_10g, lowest_1g;
8787         int num_10g, num_1g;
8788         u32 val;
8789         int err;
8790
8791         num_10g = num_1g = 0;
8792
8793         if (!strcmp(np->vpd.model, NIU_ALONSO_MDL_STR) ||
8794             !strcmp(np->vpd.model, NIU_KIMI_MDL_STR)) {
8795                 num_10g = 0;
8796                 num_1g = 2;
8797                 parent->plat_type = PLAT_TYPE_ATCA_CP3220;
8798                 parent->num_ports = 4;
8799                 val = (phy_encode(PORT_TYPE_1G, 0) |
8800                        phy_encode(PORT_TYPE_1G, 1) |
8801                        phy_encode(PORT_TYPE_1G, 2) |
8802                        phy_encode(PORT_TYPE_1G, 3));
8803         } else if (!strcmp(np->vpd.model, NIU_FOXXY_MDL_STR)) {
8804                 num_10g = 2;
8805                 num_1g = 0;
8806                 parent->num_ports = 2;
8807                 val = (phy_encode(PORT_TYPE_10G, 0) |
8808                        phy_encode(PORT_TYPE_10G, 1));
8809         } else if ((np->flags & NIU_FLAGS_XCVR_SERDES) &&
8810                    (parent->plat_type == PLAT_TYPE_NIU)) {
8811                 /* this is the Monza case */
8812                 if (np->flags & NIU_FLAGS_10G) {
8813                         val = (phy_encode(PORT_TYPE_10G, 0) |
8814                                phy_encode(PORT_TYPE_10G, 1));
8815                 } else {
8816                         val = (phy_encode(PORT_TYPE_1G, 0) |
8817                                phy_encode(PORT_TYPE_1G, 1));
8818                 }
8819         } else {
8820                 err = fill_phy_probe_info(np, parent, info);
8821                 if (err)
8822                         return err;
8823
8824                 num_10g = count_10g_ports(info, &lowest_10g);
8825                 num_1g = count_1g_ports(info, &lowest_1g);
8826
8827                 switch ((num_10g << 4) | num_1g) {
8828                 case 0x24:
8829                         if (lowest_1g == 10)
8830                                 parent->plat_type = PLAT_TYPE_VF_P0;
8831                         else if (lowest_1g == 26)
8832                                 parent->plat_type = PLAT_TYPE_VF_P1;
8833                         else
8834                                 goto unknown_vg_1g_port;
8835
8836                         fallthrough;
8837                 case 0x22:
8838                         val = (phy_encode(PORT_TYPE_10G, 0) |
8839                                phy_encode(PORT_TYPE_10G, 1) |
8840                                phy_encode(PORT_TYPE_1G, 2) |
8841                                phy_encode(PORT_TYPE_1G, 3));
8842                         break;
8843
8844                 case 0x20:
8845                         val = (phy_encode(PORT_TYPE_10G, 0) |
8846                                phy_encode(PORT_TYPE_10G, 1));
8847                         break;
8848
8849                 case 0x10:
8850                         val = phy_encode(PORT_TYPE_10G, np->port);
8851                         break;
8852
8853                 case 0x14:
8854                         if (lowest_1g == 10)
8855                                 parent->plat_type = PLAT_TYPE_VF_P0;
8856                         else if (lowest_1g == 26)
8857                                 parent->plat_type = PLAT_TYPE_VF_P1;
8858                         else
8859                                 goto unknown_vg_1g_port;
8860
8861                         fallthrough;
8862                 case 0x13:
8863                         if ((lowest_10g & 0x7) == 0)
8864                                 val = (phy_encode(PORT_TYPE_10G, 0) |
8865                                        phy_encode(PORT_TYPE_1G, 1) |
8866                                        phy_encode(PORT_TYPE_1G, 2) |
8867                                        phy_encode(PORT_TYPE_1G, 3));
8868                         else
8869                                 val = (phy_encode(PORT_TYPE_1G, 0) |
8870                                        phy_encode(PORT_TYPE_10G, 1) |
8871                                        phy_encode(PORT_TYPE_1G, 2) |
8872                                        phy_encode(PORT_TYPE_1G, 3));
8873                         break;
8874
8875                 case 0x04:
8876                         if (lowest_1g == 10)
8877                                 parent->plat_type = PLAT_TYPE_VF_P0;
8878                         else if (lowest_1g == 26)
8879                                 parent->plat_type = PLAT_TYPE_VF_P1;
8880                         else
8881                                 goto unknown_vg_1g_port;
8882
8883                         val = (phy_encode(PORT_TYPE_1G, 0) |
8884                                phy_encode(PORT_TYPE_1G, 1) |
8885                                phy_encode(PORT_TYPE_1G, 2) |
8886                                phy_encode(PORT_TYPE_1G, 3));
8887                         break;
8888
8889                 default:
8890                         pr_err("Unsupported port config 10G[%d] 1G[%d]\n",
8891                                num_10g, num_1g);
8892                         return -EINVAL;
8893                 }
8894         }
8895
8896         parent->port_phy = val;
8897
8898         if (parent->plat_type == PLAT_TYPE_NIU)
8899                 niu_n2_divide_channels(parent);
8900         else
8901                 niu_divide_channels(parent, num_10g, num_1g);
8902
8903         niu_divide_rdc_groups(parent, num_10g, num_1g);
8904
8905         return 0;
8906
8907 unknown_vg_1g_port:
8908         pr_err("Cannot identify platform type, 1gport=%d\n", lowest_1g);
8909         return -EINVAL;
8910 }
8911
8912 static int niu_probe_ports(struct niu *np)
8913 {
8914         struct niu_parent *parent = np->parent;
8915         int err, i;
8916
8917         if (parent->port_phy == PORT_PHY_UNKNOWN) {
8918                 err = walk_phys(np, parent);
8919                 if (err)
8920                         return err;
8921
8922                 niu_set_ldg_timer_res(np, 2);
8923                 for (i = 0; i <= LDN_MAX; i++)
8924                         niu_ldn_irq_enable(np, i, 0);
8925         }
8926
8927         if (parent->port_phy == PORT_PHY_INVALID)
8928                 return -EINVAL;
8929
8930         return 0;
8931 }
8932
8933 static int niu_classifier_swstate_init(struct niu *np)
8934 {
8935         struct niu_classifier *cp = &np->clas;
8936
8937         cp->tcam_top = (u16) np->port;
8938         cp->tcam_sz = np->parent->tcam_num_entries / np->parent->num_ports;
8939         cp->h1_init = 0xffffffff;
8940         cp->h2_init = 0xffff;
8941
8942         return fflp_early_init(np);
8943 }
8944
8945 static void niu_link_config_init(struct niu *np)
8946 {
8947         struct niu_link_config *lp = &np->link_config;
8948
8949         lp->advertising = (ADVERTISED_10baseT_Half |
8950                            ADVERTISED_10baseT_Full |
8951                            ADVERTISED_100baseT_Half |
8952                            ADVERTISED_100baseT_Full |
8953                            ADVERTISED_1000baseT_Half |
8954                            ADVERTISED_1000baseT_Full |
8955                            ADVERTISED_10000baseT_Full |
8956                            ADVERTISED_Autoneg);
8957         lp->speed = lp->active_speed = SPEED_INVALID;
8958         lp->duplex = DUPLEX_FULL;
8959         lp->active_duplex = DUPLEX_INVALID;
8960         lp->autoneg = 1;
8961 #if 0
8962         lp->loopback_mode = LOOPBACK_MAC;
8963         lp->active_speed = SPEED_10000;
8964         lp->active_duplex = DUPLEX_FULL;
8965 #else
8966         lp->loopback_mode = LOOPBACK_DISABLED;
8967 #endif
8968 }
8969
8970 static int niu_init_mac_ipp_pcs_base(struct niu *np)
8971 {
8972         switch (np->port) {
8973         case 0:
8974                 np->mac_regs = np->regs + XMAC_PORT0_OFF;
8975                 np->ipp_off  = 0x00000;
8976                 np->pcs_off  = 0x04000;
8977                 np->xpcs_off = 0x02000;
8978                 break;
8979
8980         case 1:
8981                 np->mac_regs = np->regs + XMAC_PORT1_OFF;
8982                 np->ipp_off  = 0x08000;
8983                 np->pcs_off  = 0x0a000;
8984                 np->xpcs_off = 0x08000;
8985                 break;
8986
8987         case 2:
8988                 np->mac_regs = np->regs + BMAC_PORT2_OFF;
8989                 np->ipp_off  = 0x04000;
8990                 np->pcs_off  = 0x0e000;
8991                 np->xpcs_off = ~0UL;
8992                 break;
8993
8994         case 3:
8995                 np->mac_regs = np->regs + BMAC_PORT3_OFF;
8996                 np->ipp_off  = 0x0c000;
8997                 np->pcs_off  = 0x12000;
8998                 np->xpcs_off = ~0UL;
8999                 break;
9000
9001         default:
9002                 dev_err(np->device, "Port %u is invalid, cannot compute MAC block offset\n", np->port);
9003                 return -EINVAL;
9004         }
9005
9006         return 0;
9007 }
9008
9009 static void niu_try_msix(struct niu *np, u8 *ldg_num_map)
9010 {
9011         struct msix_entry msi_vec[NIU_NUM_LDG];
9012         struct niu_parent *parent = np->parent;
9013         struct pci_dev *pdev = np->pdev;
9014         int i, num_irqs;
9015         u8 first_ldg;
9016
9017         first_ldg = (NIU_NUM_LDG / parent->num_ports) * np->port;
9018         for (i = 0; i < (NIU_NUM_LDG / parent->num_ports); i++)
9019                 ldg_num_map[i] = first_ldg + i;
9020
9021         num_irqs = (parent->rxchan_per_port[np->port] +
9022                     parent->txchan_per_port[np->port] +
9023                     (np->port == 0 ? 3 : 1));
9024         BUG_ON(num_irqs > (NIU_NUM_LDG / parent->num_ports));
9025
9026         for (i = 0; i < num_irqs; i++) {
9027                 msi_vec[i].vector = 0;
9028                 msi_vec[i].entry = i;
9029         }
9030
9031         num_irqs = pci_enable_msix_range(pdev, msi_vec, 1, num_irqs);
9032         if (num_irqs < 0) {
9033                 np->flags &= ~NIU_FLAGS_MSIX;
9034                 return;
9035         }
9036
9037         np->flags |= NIU_FLAGS_MSIX;
9038         for (i = 0; i < num_irqs; i++)
9039                 np->ldg[i].irq = msi_vec[i].vector;
9040         np->num_ldg = num_irqs;
9041 }
9042
9043 static int niu_n2_irq_init(struct niu *np, u8 *ldg_num_map)
9044 {
9045 #ifdef CONFIG_SPARC64
9046         struct platform_device *op = np->op;
9047         const u32 *int_prop;
9048         int i;
9049
9050         int_prop = of_get_property(op->dev.of_node, "interrupts", NULL);
9051         if (!int_prop)
9052                 return -ENODEV;
9053
9054         for (i = 0; i < op->archdata.num_irqs; i++) {
9055                 ldg_num_map[i] = int_prop[i];
9056                 np->ldg[i].irq = op->archdata.irqs[i];
9057         }
9058
9059         np->num_ldg = op->archdata.num_irqs;
9060
9061         return 0;
9062 #else
9063         return -EINVAL;
9064 #endif
9065 }
9066
9067 static int niu_ldg_init(struct niu *np)
9068 {
9069         struct niu_parent *parent = np->parent;
9070         u8 ldg_num_map[NIU_NUM_LDG];
9071         int first_chan, num_chan;
9072         int i, err, ldg_rotor;
9073         u8 port;
9074
9075         np->num_ldg = 1;
9076         np->ldg[0].irq = np->dev->irq;
9077         if (parent->plat_type == PLAT_TYPE_NIU) {
9078                 err = niu_n2_irq_init(np, ldg_num_map);
9079                 if (err)
9080                         return err;
9081         } else
9082                 niu_try_msix(np, ldg_num_map);
9083
9084         port = np->port;
9085         for (i = 0; i < np->num_ldg; i++) {
9086                 struct niu_ldg *lp = &np->ldg[i];
9087
9088                 netif_napi_add(np->dev, &lp->napi, niu_poll, 64);
9089
9090                 lp->np = np;
9091                 lp->ldg_num = ldg_num_map[i];
9092                 lp->timer = 2; /* XXX */
9093
9094                 /* On N2 NIU the firmware has setup the SID mappings so they go
9095                  * to the correct values that will route the LDG to the proper
9096                  * interrupt in the NCU interrupt table.
9097                  */
9098                 if (np->parent->plat_type != PLAT_TYPE_NIU) {
9099                         err = niu_set_ldg_sid(np, lp->ldg_num, port, i);
9100                         if (err)
9101                                 return err;
9102                 }
9103         }
9104
9105         /* We adopt the LDG assignment ordering used by the N2 NIU
9106          * 'interrupt' properties because that simplifies a lot of
9107          * things.  This ordering is:
9108          *
9109          *      MAC
9110          *      MIF     (if port zero)
9111          *      SYSERR  (if port zero)
9112          *      RX channels
9113          *      TX channels
9114          */
9115
9116         ldg_rotor = 0;
9117
9118         err = niu_ldg_assign_ldn(np, parent, ldg_num_map[ldg_rotor],
9119                                   LDN_MAC(port));
9120         if (err)
9121                 return err;
9122
9123         ldg_rotor++;
9124         if (ldg_rotor == np->num_ldg)
9125                 ldg_rotor = 0;
9126
9127         if (port == 0) {
9128                 err = niu_ldg_assign_ldn(np, parent,
9129                                          ldg_num_map[ldg_rotor],
9130                                          LDN_MIF);
9131                 if (err)
9132                         return err;
9133
9134                 ldg_rotor++;
9135                 if (ldg_rotor == np->num_ldg)
9136                         ldg_rotor = 0;
9137
9138                 err = niu_ldg_assign_ldn(np, parent,
9139                                          ldg_num_map[ldg_rotor],
9140                                          LDN_DEVICE_ERROR);
9141                 if (err)
9142                         return err;
9143
9144                 ldg_rotor++;
9145                 if (ldg_rotor == np->num_ldg)
9146                         ldg_rotor = 0;
9147
9148         }
9149
9150         first_chan = 0;
9151         for (i = 0; i < port; i++)
9152                 first_chan += parent->rxchan_per_port[i];
9153         num_chan = parent->rxchan_per_port[port];
9154
9155         for (i = first_chan; i < (first_chan + num_chan); i++) {
9156                 err = niu_ldg_assign_ldn(np, parent,
9157                                          ldg_num_map[ldg_rotor],
9158                                          LDN_RXDMA(i));
9159                 if (err)
9160                         return err;
9161                 ldg_rotor++;
9162                 if (ldg_rotor == np->num_ldg)
9163                         ldg_rotor = 0;
9164         }
9165
9166         first_chan = 0;
9167         for (i = 0; i < port; i++)
9168                 first_chan += parent->txchan_per_port[i];
9169         num_chan = parent->txchan_per_port[port];
9170         for (i = first_chan; i < (first_chan + num_chan); i++) {
9171                 err = niu_ldg_assign_ldn(np, parent,
9172                                          ldg_num_map[ldg_rotor],
9173                                          LDN_TXDMA(i));
9174                 if (err)
9175                         return err;
9176                 ldg_rotor++;
9177                 if (ldg_rotor == np->num_ldg)
9178                         ldg_rotor = 0;
9179         }
9180
9181         return 0;
9182 }
9183
9184 static void niu_ldg_free(struct niu *np)
9185 {
9186         if (np->flags & NIU_FLAGS_MSIX)
9187                 pci_disable_msix(np->pdev);
9188 }
9189
9190 static int niu_get_of_props(struct niu *np)
9191 {
9192 #ifdef CONFIG_SPARC64
9193         struct net_device *dev = np->dev;
9194         struct device_node *dp;
9195         const char *phy_type;
9196         const u8 *mac_addr;
9197         const char *model;
9198         int prop_len;
9199
9200         if (np->parent->plat_type == PLAT_TYPE_NIU)
9201                 dp = np->op->dev.of_node;
9202         else
9203                 dp = pci_device_to_OF_node(np->pdev);
9204
9205         phy_type = of_get_property(dp, "phy-type", &prop_len);
9206         if (!phy_type) {
9207                 netdev_err(dev, "%pOF: OF node lacks phy-type property\n", dp);
9208                 return -EINVAL;
9209         }
9210
9211         if (!strcmp(phy_type, "none"))
9212                 return -ENODEV;
9213
9214         strcpy(np->vpd.phy_type, phy_type);
9215
9216         if (niu_phy_type_prop_decode(np, np->vpd.phy_type)) {
9217                 netdev_err(dev, "%pOF: Illegal phy string [%s]\n",
9218                            dp, np->vpd.phy_type);
9219                 return -EINVAL;
9220         }
9221
9222         mac_addr = of_get_property(dp, "local-mac-address", &prop_len);
9223         if (!mac_addr) {
9224                 netdev_err(dev, "%pOF: OF node lacks local-mac-address property\n",
9225                            dp);
9226                 return -EINVAL;
9227         }
9228         if (prop_len != dev->addr_len) {
9229                 netdev_err(dev, "%pOF: OF MAC address prop len (%d) is wrong\n",
9230                            dp, prop_len);
9231         }
9232         memcpy(dev->dev_addr, mac_addr, dev->addr_len);
9233         if (!is_valid_ether_addr(&dev->dev_addr[0])) {
9234                 netdev_err(dev, "%pOF: OF MAC address is invalid\n", dp);
9235                 netdev_err(dev, "%pOF: [ %pM ]\n", dp, dev->dev_addr);
9236                 return -EINVAL;
9237         }
9238
9239         model = of_get_property(dp, "model", &prop_len);
9240
9241         if (model)
9242                 strcpy(np->vpd.model, model);
9243
9244         if (of_find_property(dp, "hot-swappable-phy", &prop_len)) {
9245                 np->flags |= (NIU_FLAGS_10G | NIU_FLAGS_FIBER |
9246                         NIU_FLAGS_HOTPLUG_PHY);
9247         }
9248
9249         return 0;
9250 #else
9251         return -EINVAL;
9252 #endif
9253 }
9254
9255 static int niu_get_invariants(struct niu *np)
9256 {
9257         int err, have_props;
9258         u32 offset;
9259
9260         err = niu_get_of_props(np);
9261         if (err == -ENODEV)
9262                 return err;
9263
9264         have_props = !err;
9265
9266         err = niu_init_mac_ipp_pcs_base(np);
9267         if (err)
9268                 return err;
9269
9270         if (have_props) {
9271                 err = niu_get_and_validate_port(np);
9272                 if (err)
9273                         return err;
9274
9275         } else  {
9276                 if (np->parent->plat_type == PLAT_TYPE_NIU)
9277                         return -EINVAL;
9278
9279                 nw64(ESPC_PIO_EN, ESPC_PIO_EN_ENABLE);
9280                 offset = niu_pci_vpd_offset(np);
9281                 netif_printk(np, probe, KERN_DEBUG, np->dev,
9282                              "%s() VPD offset [%08x]\n", __func__, offset);
9283                 if (offset)
9284                         niu_pci_vpd_fetch(np, offset);
9285                 nw64(ESPC_PIO_EN, 0);
9286
9287                 if (np->flags & NIU_FLAGS_VPD_VALID) {
9288                         niu_pci_vpd_validate(np);
9289                         err = niu_get_and_validate_port(np);
9290                         if (err)
9291                                 return err;
9292                 }
9293
9294                 if (!(np->flags & NIU_FLAGS_VPD_VALID)) {
9295                         err = niu_get_and_validate_port(np);
9296                         if (err)
9297                                 return err;
9298                         err = niu_pci_probe_sprom(np);
9299                         if (err)
9300                                 return err;
9301                 }
9302         }
9303
9304         err = niu_probe_ports(np);
9305         if (err)
9306                 return err;
9307
9308         niu_ldg_init(np);
9309
9310         niu_classifier_swstate_init(np);
9311         niu_link_config_init(np);
9312
9313         err = niu_determine_phy_disposition(np);
9314         if (!err)
9315                 err = niu_init_link(np);
9316
9317         return err;
9318 }
9319
9320 static LIST_HEAD(niu_parent_list);
9321 static DEFINE_MUTEX(niu_parent_lock);
9322 static int niu_parent_index;
9323
9324 static ssize_t show_port_phy(struct device *dev,
9325                              struct device_attribute *attr, char *buf)
9326 {
9327         struct platform_device *plat_dev = to_platform_device(dev);
9328         struct niu_parent *p = dev_get_platdata(&plat_dev->dev);
9329         u32 port_phy = p->port_phy;
9330         char *orig_buf = buf;
9331         int i;
9332
9333         if (port_phy == PORT_PHY_UNKNOWN ||
9334             port_phy == PORT_PHY_INVALID)
9335                 return 0;
9336
9337         for (i = 0; i < p->num_ports; i++) {
9338                 const char *type_str;
9339                 int type;
9340
9341                 type = phy_decode(port_phy, i);
9342                 if (type == PORT_TYPE_10G)
9343                         type_str = "10G";
9344                 else
9345                         type_str = "1G";
9346                 buf += sprintf(buf,
9347                                (i == 0) ? "%s" : " %s",
9348                                type_str);
9349         }
9350         buf += sprintf(buf, "\n");
9351         return buf - orig_buf;
9352 }
9353
9354 static ssize_t show_plat_type(struct device *dev,
9355                               struct device_attribute *attr, char *buf)
9356 {
9357         struct platform_device *plat_dev = to_platform_device(dev);
9358         struct niu_parent *p = dev_get_platdata(&plat_dev->dev);
9359         const char *type_str;
9360
9361         switch (p->plat_type) {
9362         case PLAT_TYPE_ATLAS:
9363                 type_str = "atlas";
9364                 break;
9365         case PLAT_TYPE_NIU:
9366                 type_str = "niu";
9367                 break;
9368         case PLAT_TYPE_VF_P0:
9369                 type_str = "vf_p0";
9370                 break;
9371         case PLAT_TYPE_VF_P1:
9372                 type_str = "vf_p1";
9373                 break;
9374         default:
9375                 type_str = "unknown";
9376                 break;
9377         }
9378
9379         return sprintf(buf, "%s\n", type_str);
9380 }
9381
9382 static ssize_t __show_chan_per_port(struct device *dev,
9383                                     struct device_attribute *attr, char *buf,
9384                                     int rx)
9385 {
9386         struct platform_device *plat_dev = to_platform_device(dev);
9387         struct niu_parent *p = dev_get_platdata(&plat_dev->dev);
9388         char *orig_buf = buf;
9389         u8 *arr;
9390         int i;
9391
9392         arr = (rx ? p->rxchan_per_port : p->txchan_per_port);
9393
9394         for (i = 0; i < p->num_ports; i++) {
9395                 buf += sprintf(buf,
9396                                (i == 0) ? "%d" : " %d",
9397                                arr[i]);
9398         }
9399         buf += sprintf(buf, "\n");
9400
9401         return buf - orig_buf;
9402 }
9403
9404 static ssize_t show_rxchan_per_port(struct device *dev,
9405                                     struct device_attribute *attr, char *buf)
9406 {
9407         return __show_chan_per_port(dev, attr, buf, 1);
9408 }
9409
9410 static ssize_t show_txchan_per_port(struct device *dev,
9411                                     struct device_attribute *attr, char *buf)
9412 {
9413         return __show_chan_per_port(dev, attr, buf, 1);
9414 }
9415
9416 static ssize_t show_num_ports(struct device *dev,
9417                               struct device_attribute *attr, char *buf)
9418 {
9419         struct platform_device *plat_dev = to_platform_device(dev);
9420         struct niu_parent *p = dev_get_platdata(&plat_dev->dev);
9421
9422         return sprintf(buf, "%d\n", p->num_ports);
9423 }
9424
9425 static struct device_attribute niu_parent_attributes[] = {
9426         __ATTR(port_phy, 0444, show_port_phy, NULL),
9427         __ATTR(plat_type, 0444, show_plat_type, NULL),
9428         __ATTR(rxchan_per_port, 0444, show_rxchan_per_port, NULL),
9429         __ATTR(txchan_per_port, 0444, show_txchan_per_port, NULL),
9430         __ATTR(num_ports, 0444, show_num_ports, NULL),
9431         {}
9432 };
9433
9434 static struct niu_parent *niu_new_parent(struct niu *np,
9435                                          union niu_parent_id *id, u8 ptype)
9436 {
9437         struct platform_device *plat_dev;
9438         struct niu_parent *p;
9439         int i;
9440
9441         plat_dev = platform_device_register_simple("niu-board", niu_parent_index,
9442                                                    NULL, 0);
9443         if (IS_ERR(plat_dev))
9444                 return NULL;
9445
9446         for (i = 0; niu_parent_attributes[i].attr.name; i++) {
9447                 int err = device_create_file(&plat_dev->dev,
9448                                              &niu_parent_attributes[i]);
9449                 if (err)
9450                         goto fail_unregister;
9451         }
9452
9453         p = kzalloc(sizeof(*p), GFP_KERNEL);
9454         if (!p)
9455                 goto fail_unregister;
9456
9457         p->index = niu_parent_index++;
9458
9459         plat_dev->dev.platform_data = p;
9460         p->plat_dev = plat_dev;
9461
9462         memcpy(&p->id, id, sizeof(*id));
9463         p->plat_type = ptype;
9464         INIT_LIST_HEAD(&p->list);
9465         atomic_set(&p->refcnt, 0);
9466         list_add(&p->list, &niu_parent_list);
9467         spin_lock_init(&p->lock);
9468
9469         p->rxdma_clock_divider = 7500;
9470
9471         p->tcam_num_entries = NIU_PCI_TCAM_ENTRIES;
9472         if (p->plat_type == PLAT_TYPE_NIU)
9473                 p->tcam_num_entries = NIU_NONPCI_TCAM_ENTRIES;
9474
9475         for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_SCTP_IPV6; i++) {
9476                 int index = i - CLASS_CODE_USER_PROG1;
9477
9478                 p->tcam_key[index] = TCAM_KEY_TSEL;
9479                 p->flow_key[index] = (FLOW_KEY_IPSA |
9480                                       FLOW_KEY_IPDA |
9481                                       FLOW_KEY_PROTO |
9482                                       (FLOW_KEY_L4_BYTE12 <<
9483                                        FLOW_KEY_L4_0_SHIFT) |
9484                                       (FLOW_KEY_L4_BYTE12 <<
9485                                        FLOW_KEY_L4_1_SHIFT));
9486         }
9487
9488         for (i = 0; i < LDN_MAX + 1; i++)
9489                 p->ldg_map[i] = LDG_INVALID;
9490
9491         return p;
9492
9493 fail_unregister:
9494         platform_device_unregister(plat_dev);
9495         return NULL;
9496 }
9497
9498 static struct niu_parent *niu_get_parent(struct niu *np,
9499                                          union niu_parent_id *id, u8 ptype)
9500 {
9501         struct niu_parent *p, *tmp;
9502         int port = np->port;
9503
9504         mutex_lock(&niu_parent_lock);
9505         p = NULL;
9506         list_for_each_entry(tmp, &niu_parent_list, list) {
9507                 if (!memcmp(id, &tmp->id, sizeof(*id))) {
9508                         p = tmp;
9509                         break;
9510                 }
9511         }
9512         if (!p)
9513                 p = niu_new_parent(np, id, ptype);
9514
9515         if (p) {
9516                 char port_name[8];
9517                 int err;
9518
9519                 sprintf(port_name, "port%d", port);
9520                 err = sysfs_create_link(&p->plat_dev->dev.kobj,
9521                                         &np->device->kobj,
9522                                         port_name);
9523                 if (!err) {
9524                         p->ports[port] = np;
9525                         atomic_inc(&p->refcnt);
9526                 }
9527         }
9528         mutex_unlock(&niu_parent_lock);
9529
9530         return p;
9531 }
9532
9533 static void niu_put_parent(struct niu *np)
9534 {
9535         struct niu_parent *p = np->parent;
9536         u8 port = np->port;
9537         char port_name[8];
9538
9539         BUG_ON(!p || p->ports[port] != np);
9540
9541         netif_printk(np, probe, KERN_DEBUG, np->dev,
9542                      "%s() port[%u]\n", __func__, port);
9543
9544         sprintf(port_name, "port%d", port);
9545
9546         mutex_lock(&niu_parent_lock);
9547
9548         sysfs_remove_link(&p->plat_dev->dev.kobj, port_name);
9549
9550         p->ports[port] = NULL;
9551         np->parent = NULL;
9552
9553         if (atomic_dec_and_test(&p->refcnt)) {
9554                 list_del(&p->list);
9555                 platform_device_unregister(p->plat_dev);
9556         }
9557
9558         mutex_unlock(&niu_parent_lock);
9559 }
9560
9561 static void *niu_pci_alloc_coherent(struct device *dev, size_t size,
9562                                     u64 *handle, gfp_t flag)
9563 {
9564         dma_addr_t dh;
9565         void *ret;
9566
9567         ret = dma_alloc_coherent(dev, size, &dh, flag);
9568         if (ret)
9569                 *handle = dh;
9570         return ret;
9571 }
9572
9573 static void niu_pci_free_coherent(struct device *dev, size_t size,
9574                                   void *cpu_addr, u64 handle)
9575 {
9576         dma_free_coherent(dev, size, cpu_addr, handle);
9577 }
9578
9579 static u64 niu_pci_map_page(struct device *dev, struct page *page,
9580                             unsigned long offset, size_t size,
9581                             enum dma_data_direction direction)
9582 {
9583         return dma_map_page(dev, page, offset, size, direction);
9584 }
9585
9586 static void niu_pci_unmap_page(struct device *dev, u64 dma_address,
9587                                size_t size, enum dma_data_direction direction)
9588 {
9589         dma_unmap_page(dev, dma_address, size, direction);
9590 }
9591
9592 static u64 niu_pci_map_single(struct device *dev, void *cpu_addr,
9593                               size_t size,
9594                               enum dma_data_direction direction)
9595 {
9596         return dma_map_single(dev, cpu_addr, size, direction);
9597 }
9598
9599 static void niu_pci_unmap_single(struct device *dev, u64 dma_address,
9600                                  size_t size,
9601                                  enum dma_data_direction direction)
9602 {
9603         dma_unmap_single(dev, dma_address, size, direction);
9604 }
9605
9606 static const struct niu_ops niu_pci_ops = {
9607         .alloc_coherent = niu_pci_alloc_coherent,
9608         .free_coherent  = niu_pci_free_coherent,
9609         .map_page       = niu_pci_map_page,
9610         .unmap_page     = niu_pci_unmap_page,
9611         .map_single     = niu_pci_map_single,
9612         .unmap_single   = niu_pci_unmap_single,
9613 };
9614
9615 static void niu_driver_version(void)
9616 {
9617         static int niu_version_printed;
9618
9619         if (niu_version_printed++ == 0)
9620                 pr_info("%s", version);
9621 }
9622
9623 static struct net_device *niu_alloc_and_init(struct device *gen_dev,
9624                                              struct pci_dev *pdev,
9625                                              struct platform_device *op,
9626                                              const struct niu_ops *ops, u8 port)
9627 {
9628         struct net_device *dev;
9629         struct niu *np;
9630
9631         dev = alloc_etherdev_mq(sizeof(struct niu), NIU_NUM_TXCHAN);
9632         if (!dev)
9633                 return NULL;
9634
9635         SET_NETDEV_DEV(dev, gen_dev);
9636
9637         np = netdev_priv(dev);
9638         np->dev = dev;
9639         np->pdev = pdev;
9640         np->op = op;
9641         np->device = gen_dev;
9642         np->ops = ops;
9643
9644         np->msg_enable = niu_debug;
9645
9646         spin_lock_init(&np->lock);
9647         INIT_WORK(&np->reset_task, niu_reset_task);
9648
9649         np->port = port;
9650
9651         return dev;
9652 }
9653
9654 static const struct net_device_ops niu_netdev_ops = {
9655         .ndo_open               = niu_open,
9656         .ndo_stop               = niu_close,
9657         .ndo_start_xmit         = niu_start_xmit,
9658         .ndo_get_stats64        = niu_get_stats,
9659         .ndo_set_rx_mode        = niu_set_rx_mode,
9660         .ndo_validate_addr      = eth_validate_addr,
9661         .ndo_set_mac_address    = niu_set_mac_addr,
9662         .ndo_do_ioctl           = niu_ioctl,
9663         .ndo_tx_timeout         = niu_tx_timeout,
9664         .ndo_change_mtu         = niu_change_mtu,
9665 };
9666
9667 static void niu_assign_netdev_ops(struct net_device *dev)
9668 {
9669         dev->netdev_ops = &niu_netdev_ops;
9670         dev->ethtool_ops = &niu_ethtool_ops;
9671         dev->watchdog_timeo = NIU_TX_TIMEOUT;
9672 }
9673
9674 static void niu_device_announce(struct niu *np)
9675 {
9676         struct net_device *dev = np->dev;
9677
9678         pr_info("%s: NIU Ethernet %pM\n", dev->name, dev->dev_addr);
9679
9680         if (np->parent->plat_type == PLAT_TYPE_ATCA_CP3220) {
9681                 pr_info("%s: Port type[%s] mode[%s:%s] XCVR[%s] phy[%s]\n",
9682                                 dev->name,
9683                                 (np->flags & NIU_FLAGS_XMAC ? "XMAC" : "BMAC"),
9684                                 (np->flags & NIU_FLAGS_10G ? "10G" : "1G"),
9685                                 (np->flags & NIU_FLAGS_FIBER ? "RGMII FIBER" : "SERDES"),
9686                                 (np->mac_xcvr == MAC_XCVR_MII ? "MII" :
9687                                  (np->mac_xcvr == MAC_XCVR_PCS ? "PCS" : "XPCS")),
9688                                 np->vpd.phy_type);
9689         } else {
9690                 pr_info("%s: Port type[%s] mode[%s:%s] XCVR[%s] phy[%s]\n",
9691                                 dev->name,
9692                                 (np->flags & NIU_FLAGS_XMAC ? "XMAC" : "BMAC"),
9693                                 (np->flags & NIU_FLAGS_10G ? "10G" : "1G"),
9694                                 (np->flags & NIU_FLAGS_FIBER ? "FIBER" :
9695                                  (np->flags & NIU_FLAGS_XCVR_SERDES ? "SERDES" :
9696                                   "COPPER")),
9697                                 (np->mac_xcvr == MAC_XCVR_MII ? "MII" :
9698                                  (np->mac_xcvr == MAC_XCVR_PCS ? "PCS" : "XPCS")),
9699                                 np->vpd.phy_type);
9700         }
9701 }
9702
9703 static void niu_set_basic_features(struct net_device *dev)
9704 {
9705         dev->hw_features = NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_RXHASH;
9706         dev->features |= dev->hw_features | NETIF_F_RXCSUM;
9707 }
9708
9709 static int niu_pci_init_one(struct pci_dev *pdev,
9710                             const struct pci_device_id *ent)
9711 {
9712         union niu_parent_id parent_id;
9713         struct net_device *dev;
9714         struct niu *np;
9715         int err;
9716         u64 dma_mask;
9717
9718         niu_driver_version();
9719
9720         err = pci_enable_device(pdev);
9721         if (err) {
9722                 dev_err(&pdev->dev, "Cannot enable PCI device, aborting\n");
9723                 return err;
9724         }
9725
9726         if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM) ||
9727             !(pci_resource_flags(pdev, 2) & IORESOURCE_MEM)) {
9728                 dev_err(&pdev->dev, "Cannot find proper PCI device base addresses, aborting\n");
9729                 err = -ENODEV;
9730                 goto err_out_disable_pdev;
9731         }
9732
9733         err = pci_request_regions(pdev, DRV_MODULE_NAME);
9734         if (err) {
9735                 dev_err(&pdev->dev, "Cannot obtain PCI resources, aborting\n");
9736                 goto err_out_disable_pdev;
9737         }
9738
9739         if (!pci_is_pcie(pdev)) {
9740                 dev_err(&pdev->dev, "Cannot find PCI Express capability, aborting\n");
9741                 err = -ENODEV;
9742                 goto err_out_free_res;
9743         }
9744
9745         dev = niu_alloc_and_init(&pdev->dev, pdev, NULL,
9746                                  &niu_pci_ops, PCI_FUNC(pdev->devfn));
9747         if (!dev) {
9748                 err = -ENOMEM;
9749                 goto err_out_free_res;
9750         }
9751         np = netdev_priv(dev);
9752
9753         memset(&parent_id, 0, sizeof(parent_id));
9754         parent_id.pci.domain = pci_domain_nr(pdev->bus);
9755         parent_id.pci.bus = pdev->bus->number;
9756         parent_id.pci.device = PCI_SLOT(pdev->devfn);
9757
9758         np->parent = niu_get_parent(np, &parent_id,
9759                                     PLAT_TYPE_ATLAS);
9760         if (!np->parent) {
9761                 err = -ENOMEM;
9762                 goto err_out_free_dev;
9763         }
9764
9765         pcie_capability_clear_and_set_word(pdev, PCI_EXP_DEVCTL,
9766                 PCI_EXP_DEVCTL_NOSNOOP_EN,
9767                 PCI_EXP_DEVCTL_CERE | PCI_EXP_DEVCTL_NFERE |
9768                 PCI_EXP_DEVCTL_FERE | PCI_EXP_DEVCTL_URRE |
9769                 PCI_EXP_DEVCTL_RELAX_EN);
9770
9771         dma_mask = DMA_BIT_MASK(44);
9772         err = pci_set_dma_mask(pdev, dma_mask);
9773         if (!err) {
9774                 dev->features |= NETIF_F_HIGHDMA;
9775                 err = pci_set_consistent_dma_mask(pdev, dma_mask);
9776                 if (err) {
9777                         dev_err(&pdev->dev, "Unable to obtain 44 bit DMA for consistent allocations, aborting\n");
9778                         goto err_out_release_parent;
9779                 }
9780         }
9781         if (err) {
9782                 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
9783                 if (err) {
9784                         dev_err(&pdev->dev, "No usable DMA configuration, aborting\n");
9785                         goto err_out_release_parent;
9786                 }
9787         }
9788
9789         niu_set_basic_features(dev);
9790
9791         dev->priv_flags |= IFF_UNICAST_FLT;
9792
9793         np->regs = pci_ioremap_bar(pdev, 0);
9794         if (!np->regs) {
9795                 dev_err(&pdev->dev, "Cannot map device registers, aborting\n");
9796                 err = -ENOMEM;
9797                 goto err_out_release_parent;
9798         }
9799
9800         pci_set_master(pdev);
9801         pci_save_state(pdev);
9802
9803         dev->irq = pdev->irq;
9804
9805         /* MTU range: 68 - 9216 */
9806         dev->min_mtu = ETH_MIN_MTU;
9807         dev->max_mtu = NIU_MAX_MTU;
9808
9809         niu_assign_netdev_ops(dev);
9810
9811         err = niu_get_invariants(np);
9812         if (err) {
9813                 if (err != -ENODEV)
9814                         dev_err(&pdev->dev, "Problem fetching invariants of chip, aborting\n");
9815                 goto err_out_iounmap;
9816         }
9817
9818         err = register_netdev(dev);
9819         if (err) {
9820                 dev_err(&pdev->dev, "Cannot register net device, aborting\n");
9821                 goto err_out_iounmap;
9822         }
9823
9824         pci_set_drvdata(pdev, dev);
9825
9826         niu_device_announce(np);
9827
9828         return 0;
9829
9830 err_out_iounmap:
9831         if (np->regs) {
9832                 iounmap(np->regs);
9833                 np->regs = NULL;
9834         }
9835
9836 err_out_release_parent:
9837         niu_put_parent(np);
9838
9839 err_out_free_dev:
9840         free_netdev(dev);
9841
9842 err_out_free_res:
9843         pci_release_regions(pdev);
9844
9845 err_out_disable_pdev:
9846         pci_disable_device(pdev);
9847
9848         return err;
9849 }
9850
9851 static void niu_pci_remove_one(struct pci_dev *pdev)
9852 {
9853         struct net_device *dev = pci_get_drvdata(pdev);
9854
9855         if (dev) {
9856                 struct niu *np = netdev_priv(dev);
9857
9858                 unregister_netdev(dev);
9859                 if (np->regs) {
9860                         iounmap(np->regs);
9861                         np->regs = NULL;
9862                 }
9863
9864                 niu_ldg_free(np);
9865
9866                 niu_put_parent(np);
9867
9868                 free_netdev(dev);
9869                 pci_release_regions(pdev);
9870                 pci_disable_device(pdev);
9871         }
9872 }
9873
9874 static int __maybe_unused niu_suspend(struct device *dev_d)
9875 {
9876         struct net_device *dev = dev_get_drvdata(dev_d);
9877         struct niu *np = netdev_priv(dev);
9878         unsigned long flags;
9879
9880         if (!netif_running(dev))
9881                 return 0;
9882
9883         flush_work(&np->reset_task);
9884         niu_netif_stop(np);
9885
9886         del_timer_sync(&np->timer);
9887
9888         spin_lock_irqsave(&np->lock, flags);
9889         niu_enable_interrupts(np, 0);
9890         spin_unlock_irqrestore(&np->lock, flags);
9891
9892         netif_device_detach(dev);
9893
9894         spin_lock_irqsave(&np->lock, flags);
9895         niu_stop_hw(np);
9896         spin_unlock_irqrestore(&np->lock, flags);
9897
9898         return 0;
9899 }
9900
9901 static int __maybe_unused niu_resume(struct device *dev_d)
9902 {
9903         struct net_device *dev = dev_get_drvdata(dev_d);
9904         struct niu *np = netdev_priv(dev);
9905         unsigned long flags;
9906         int err;
9907
9908         if (!netif_running(dev))
9909                 return 0;
9910
9911         netif_device_attach(dev);
9912
9913         spin_lock_irqsave(&np->lock, flags);
9914
9915         err = niu_init_hw(np);
9916         if (!err) {
9917                 np->timer.expires = jiffies + HZ;
9918                 add_timer(&np->timer);
9919                 niu_netif_start(np);
9920         }
9921
9922         spin_unlock_irqrestore(&np->lock, flags);
9923
9924         return err;
9925 }
9926
9927 static SIMPLE_DEV_PM_OPS(niu_pm_ops, niu_suspend, niu_resume);
9928
9929 static struct pci_driver niu_pci_driver = {
9930         .name           = DRV_MODULE_NAME,
9931         .id_table       = niu_pci_tbl,
9932         .probe          = niu_pci_init_one,
9933         .remove         = niu_pci_remove_one,
9934         .driver.pm      = &niu_pm_ops,
9935 };
9936
9937 #ifdef CONFIG_SPARC64
9938 static void *niu_phys_alloc_coherent(struct device *dev, size_t size,
9939                                      u64 *dma_addr, gfp_t flag)
9940 {
9941         unsigned long order = get_order(size);
9942         unsigned long page = __get_free_pages(flag, order);
9943
9944         if (page == 0UL)
9945                 return NULL;
9946         memset((char *)page, 0, PAGE_SIZE << order);
9947         *dma_addr = __pa(page);
9948
9949         return (void *) page;
9950 }
9951
9952 static void niu_phys_free_coherent(struct device *dev, size_t size,
9953                                    void *cpu_addr, u64 handle)
9954 {
9955         unsigned long order = get_order(size);
9956
9957         free_pages((unsigned long) cpu_addr, order);
9958 }
9959
9960 static u64 niu_phys_map_page(struct device *dev, struct page *page,
9961                              unsigned long offset, size_t size,
9962                              enum dma_data_direction direction)
9963 {
9964         return page_to_phys(page) + offset;
9965 }
9966
9967 static void niu_phys_unmap_page(struct device *dev, u64 dma_address,
9968                                 size_t size, enum dma_data_direction direction)
9969 {
9970         /* Nothing to do.  */
9971 }
9972
9973 static u64 niu_phys_map_single(struct device *dev, void *cpu_addr,
9974                                size_t size,
9975                                enum dma_data_direction direction)
9976 {
9977         return __pa(cpu_addr);
9978 }
9979
9980 static void niu_phys_unmap_single(struct device *dev, u64 dma_address,
9981                                   size_t size,
9982                                   enum dma_data_direction direction)
9983 {
9984         /* Nothing to do.  */
9985 }
9986
9987 static const struct niu_ops niu_phys_ops = {
9988         .alloc_coherent = niu_phys_alloc_coherent,
9989         .free_coherent  = niu_phys_free_coherent,
9990         .map_page       = niu_phys_map_page,
9991         .unmap_page     = niu_phys_unmap_page,
9992         .map_single     = niu_phys_map_single,
9993         .unmap_single   = niu_phys_unmap_single,
9994 };
9995
9996 static int niu_of_probe(struct platform_device *op)
9997 {
9998         union niu_parent_id parent_id;
9999         struct net_device *dev;
10000         struct niu *np;
10001         const u32 *reg;
10002         int err;
10003
10004         niu_driver_version();
10005
10006         reg = of_get_property(op->dev.of_node, "reg", NULL);
10007         if (!reg) {
10008                 dev_err(&op->dev, "%pOF: No 'reg' property, aborting\n",
10009                         op->dev.of_node);
10010                 return -ENODEV;
10011         }
10012
10013         dev = niu_alloc_and_init(&op->dev, NULL, op,
10014                                  &niu_phys_ops, reg[0] & 0x1);
10015         if (!dev) {
10016                 err = -ENOMEM;
10017                 goto err_out;
10018         }
10019         np = netdev_priv(dev);
10020
10021         memset(&parent_id, 0, sizeof(parent_id));
10022         parent_id.of = of_get_parent(op->dev.of_node);
10023
10024         np->parent = niu_get_parent(np, &parent_id,
10025                                     PLAT_TYPE_NIU);
10026         if (!np->parent) {
10027                 err = -ENOMEM;
10028                 goto err_out_free_dev;
10029         }
10030
10031         niu_set_basic_features(dev);
10032
10033         np->regs = of_ioremap(&op->resource[1], 0,
10034                               resource_size(&op->resource[1]),
10035                               "niu regs");
10036         if (!np->regs) {
10037                 dev_err(&op->dev, "Cannot map device registers, aborting\n");
10038                 err = -ENOMEM;
10039                 goto err_out_release_parent;
10040         }
10041
10042         np->vir_regs_1 = of_ioremap(&op->resource[2], 0,
10043                                     resource_size(&op->resource[2]),
10044                                     "niu vregs-1");
10045         if (!np->vir_regs_1) {
10046                 dev_err(&op->dev, "Cannot map device vir registers 1, aborting\n");
10047                 err = -ENOMEM;
10048                 goto err_out_iounmap;
10049         }
10050
10051         np->vir_regs_2 = of_ioremap(&op->resource[3], 0,
10052                                     resource_size(&op->resource[3]),
10053                                     "niu vregs-2");
10054         if (!np->vir_regs_2) {
10055                 dev_err(&op->dev, "Cannot map device vir registers 2, aborting\n");
10056                 err = -ENOMEM;
10057                 goto err_out_iounmap;
10058         }
10059
10060         niu_assign_netdev_ops(dev);
10061
10062         err = niu_get_invariants(np);
10063         if (err) {
10064                 if (err != -ENODEV)
10065                         dev_err(&op->dev, "Problem fetching invariants of chip, aborting\n");
10066                 goto err_out_iounmap;
10067         }
10068
10069         err = register_netdev(dev);
10070         if (err) {
10071                 dev_err(&op->dev, "Cannot register net device, aborting\n");
10072                 goto err_out_iounmap;
10073         }
10074
10075         platform_set_drvdata(op, dev);
10076
10077         niu_device_announce(np);
10078
10079         return 0;
10080
10081 err_out_iounmap:
10082         if (np->vir_regs_1) {
10083                 of_iounmap(&op->resource[2], np->vir_regs_1,
10084                            resource_size(&op->resource[2]));
10085                 np->vir_regs_1 = NULL;
10086         }
10087
10088         if (np->vir_regs_2) {
10089                 of_iounmap(&op->resource[3], np->vir_regs_2,
10090                            resource_size(&op->resource[3]));
10091                 np->vir_regs_2 = NULL;
10092         }
10093
10094         if (np->regs) {
10095                 of_iounmap(&op->resource[1], np->regs,
10096                            resource_size(&op->resource[1]));
10097                 np->regs = NULL;
10098         }
10099
10100 err_out_release_parent:
10101         niu_put_parent(np);
10102
10103 err_out_free_dev:
10104         free_netdev(dev);
10105
10106 err_out:
10107         return err;
10108 }
10109
10110 static int niu_of_remove(struct platform_device *op)
10111 {
10112         struct net_device *dev = platform_get_drvdata(op);
10113
10114         if (dev) {
10115                 struct niu *np = netdev_priv(dev);
10116
10117                 unregister_netdev(dev);
10118
10119                 if (np->vir_regs_1) {
10120                         of_iounmap(&op->resource[2], np->vir_regs_1,
10121                                    resource_size(&op->resource[2]));
10122                         np->vir_regs_1 = NULL;
10123                 }
10124
10125                 if (np->vir_regs_2) {
10126                         of_iounmap(&op->resource[3], np->vir_regs_2,
10127                                    resource_size(&op->resource[3]));
10128                         np->vir_regs_2 = NULL;
10129                 }
10130
10131                 if (np->regs) {
10132                         of_iounmap(&op->resource[1], np->regs,
10133                                    resource_size(&op->resource[1]));
10134                         np->regs = NULL;
10135                 }
10136
10137                 niu_ldg_free(np);
10138
10139                 niu_put_parent(np);
10140
10141                 free_netdev(dev);
10142         }
10143         return 0;
10144 }
10145
10146 static const struct of_device_id niu_match[] = {
10147         {
10148                 .name = "network",
10149                 .compatible = "SUNW,niusl",
10150         },
10151         {},
10152 };
10153 MODULE_DEVICE_TABLE(of, niu_match);
10154
10155 static struct platform_driver niu_of_driver = {
10156         .driver = {
10157                 .name = "niu",
10158                 .of_match_table = niu_match,
10159         },
10160         .probe          = niu_of_probe,
10161         .remove         = niu_of_remove,
10162 };
10163
10164 #endif /* CONFIG_SPARC64 */
10165
10166 static int __init niu_init(void)
10167 {
10168         int err = 0;
10169
10170         BUILD_BUG_ON(PAGE_SIZE < 4 * 1024);
10171
10172         niu_debug = netif_msg_init(debug, NIU_MSG_DEFAULT);
10173
10174 #ifdef CONFIG_SPARC64
10175         err = platform_driver_register(&niu_of_driver);
10176 #endif
10177
10178         if (!err) {
10179                 err = pci_register_driver(&niu_pci_driver);
10180 #ifdef CONFIG_SPARC64
10181                 if (err)
10182                         platform_driver_unregister(&niu_of_driver);
10183 #endif
10184         }
10185
10186         return err;
10187 }
10188
10189 static void __exit niu_exit(void)
10190 {
10191         pci_unregister_driver(&niu_pci_driver);
10192 #ifdef CONFIG_SPARC64
10193         platform_driver_unregister(&niu_of_driver);
10194 #endif
10195 }
10196
10197 module_init(niu_init);
10198 module_exit(niu_exit);