drivers/net/ethernet/jme.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * JMicron JMC2x0 series PCIe Ethernet Linux Device Driver
   4  *
   5  * Copyright 2008 JMicron Technology Corporation
   6  * https://www.jmicron.com/
   7  * Copyright (c) 2009 - 2010 Guo-Fu Tseng <cooldavid@cooldavid.org>
   8  *
   9  * Author: Guo-Fu Tseng <cooldavid@cooldavid.org>
  10  */
  11
  12 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  13
  14 #include <linux/module.h>
  15 #include <linux/kernel.h>
  16 #include <linux/pci.h>
  17 #include <linux/netdevice.h>
  18 #include <linux/etherdevice.h>
  19 #include <linux/ethtool.h>
  20 #include <linux/mii.h>
  21 #include <linux/crc32.h>
  22 #include <linux/delay.h>
  23 #include <linux/spinlock.h>
  24 #include <linux/in.h>
  25 #include <linux/ip.h>
  26 #include <linux/ipv6.h>
  27 #include <linux/tcp.h>
  28 #include <linux/udp.h>
  29 #include <linux/if_vlan.h>
  30 #include <linux/slab.h>
  31 #include <net/ip6_checksum.h>
  32 #include "jme.h"
  33
  34 static int force_pseudohp = -1;
  35 static int no_pseudohp = -1;
  36 static int no_extplug = -1;
  37 module_param(force_pseudohp, int, 0);
  38 MODULE_PARM_DESC(force_pseudohp,
  39         "Enable pseudo hot-plug feature manually by driver instead of BIOS.");
  40 module_param(no_pseudohp, int, 0);
  41 MODULE_PARM_DESC(no_pseudohp, "Disable pseudo hot-plug feature.");
  42 module_param(no_extplug, int, 0);
  43 MODULE_PARM_DESC(no_extplug,
  44         "Do not use external plug signal for pseudo hot-plug.");
  45
  46 static int
  47 jme_mdio_read(struct net_device *netdev, int phy, int reg)
  48 {
  49         struct jme_adapter *jme = netdev_priv(netdev);
  50         int i, val, again = (reg == MII_BMSR) ? 1 : 0;
  51
  52 read_again:
  53         jwrite32(jme, JME_SMI, SMI_OP_REQ |
  54                                 smi_phy_addr(phy) |
  55                                 smi_reg_addr(reg));
  56
  57         wmb();
  58         for (i = JME_PHY_TIMEOUT * 50 ; i > 0 ; --i) {
  59                 udelay(20);
  60                 val = jread32(jme, JME_SMI);
  61                 if ((val & SMI_OP_REQ) == 0)
  62                         break;
  63         }
  64
  65         if (i == 0) {
  66                 pr_err("phy(%d) read timeout : %d\n", phy, reg);
  67                 return 0;
  68         }
  69
  70         if (again--)
  71                 goto read_again;
  72
  73         return (val & SMI_DATA_MASK) >> SMI_DATA_SHIFT;
  74 }
  75
  76 static void
  77 jme_mdio_write(struct net_device *netdev,
  78                                 int phy, int reg, int val)
  79 {
  80         struct jme_adapter *jme = netdev_priv(netdev);
  81         int i;
  82
  83         jwrite32(jme, JME_SMI, SMI_OP_WRITE | SMI_OP_REQ |
  84                 ((val << SMI_DATA_SHIFT) & SMI_DATA_MASK) |
  85                 smi_phy_addr(phy) | smi_reg_addr(reg));
  86
  87         wmb();
  88         for (i = JME_PHY_TIMEOUT * 50 ; i > 0 ; --i) {
  89                 udelay(20);
  90                 if ((jread32(jme, JME_SMI) & SMI_OP_REQ) == 0)
  91                         break;
  92         }
  93
  94         if (i == 0)
  95                 pr_err("phy(%d) write timeout : %d\n", phy, reg);
  96 }
  97
  98 static inline void
  99 jme_reset_phy_processor(struct jme_adapter *jme)
 100 {
 101         u32 val;
 102
 103         jme_mdio_write(jme->dev,
 104                         jme->mii_if.phy_id,
 105                         MII_ADVERTISE, ADVERTISE_ALL |
 106                         ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
 107
 108         if (jme->pdev->device == PCI_DEVICE_ID_JMICRON_JMC250)
 109                 jme_mdio_write(jme->dev,
 110                                 jme->mii_if.phy_id,
 111                                 MII_CTRL1000,
 112                                 ADVERTISE_1000FULL | ADVERTISE_1000HALF);
 113
 114         val = jme_mdio_read(jme->dev,
 115                                 jme->mii_if.phy_id,
 116                                 MII_BMCR);
 117
 118         jme_mdio_write(jme->dev,
 119                         jme->mii_if.phy_id,
 120                         MII_BMCR, val | BMCR_RESET);
 121 }
 122
 123 static void
 124 jme_setup_wakeup_frame(struct jme_adapter *jme,
 125                        const u32 *mask, u32 crc, int fnr)
 126 {
 127         int i;
 128
 129         /*
 130          * Setup CRC pattern
 131          */
 132         jwrite32(jme, JME_WFOI, WFOI_CRC_SEL | (fnr & WFOI_FRAME_SEL));
 133         wmb();
 134         jwrite32(jme, JME_WFODP, crc);
 135         wmb();
 136
 137         /*
 138          * Setup Mask
 139          */
 140         for (i = 0 ; i < WAKEUP_FRAME_MASK_DWNR ; ++i) {
 141                 jwrite32(jme, JME_WFOI,
 142                                 ((i << WFOI_MASK_SHIFT) & WFOI_MASK_SEL) |
 143                                 (fnr & WFOI_FRAME_SEL));
 144                 wmb();
 145                 jwrite32(jme, JME_WFODP, mask[i]);
 146                 wmb();
 147         }
 148 }
 149
 150 static inline void
 151 jme_mac_rxclk_off(struct jme_adapter *jme)
 152 {
 153         jme->reg_gpreg1 |= GPREG1_RXCLKOFF;
 154         jwrite32f(jme, JME_GPREG1, jme->reg_gpreg1);
 155 }
 156
 157 static inline void
 158 jme_mac_rxclk_on(struct jme_adapter *jme)
 159 {
 160         jme->reg_gpreg1 &= ~GPREG1_RXCLKOFF;
 161         jwrite32f(jme, JME_GPREG1, jme->reg_gpreg1);
 162 }
 163
 164 static inline void
 165 jme_mac_txclk_off(struct jme_adapter *jme)
 166 {
 167         jme->reg_ghc &= ~(GHC_TO_CLK_SRC | GHC_TXMAC_CLK_SRC);
 168         jwrite32f(jme, JME_GHC, jme->reg_ghc);
 169 }
 170
 171 static inline void
 172 jme_mac_txclk_on(struct jme_adapter *jme)
 173 {
 174         u32 speed = jme->reg_ghc & GHC_SPEED;
 175         if (speed == GHC_SPEED_1000M)
 176                 jme->reg_ghc |= GHC_TO_CLK_GPHY | GHC_TXMAC_CLK_GPHY;
 177         else
 178                 jme->reg_ghc |= GHC_TO_CLK_PCIE | GHC_TXMAC_CLK_PCIE;
 179         jwrite32f(jme, JME_GHC, jme->reg_ghc);
 180 }
 181
 182 static inline void
 183 jme_reset_ghc_speed(struct jme_adapter *jme)
 184 {
 185         jme->reg_ghc &= ~(GHC_SPEED | GHC_DPX);
 186         jwrite32f(jme, JME_GHC, jme->reg_ghc);
 187 }
 188
 189 static inline void
 190 jme_reset_250A2_workaround(struct jme_adapter *jme)
 191 {
 192         jme->reg_gpreg1 &= ~(GPREG1_HALFMODEPATCH |
 193                              GPREG1_RSSPATCH);
 194         jwrite32(jme, JME_GPREG1, jme->reg_gpreg1);
 195 }
 196
 197 static inline void
 198 jme_assert_ghc_reset(struct jme_adapter *jme)
 199 {
 200         jme->reg_ghc |= GHC_SWRST;
 201         jwrite32f(jme, JME_GHC, jme->reg_ghc);
 202 }
 203
 204 static inline void
 205 jme_clear_ghc_reset(struct jme_adapter *jme)
 206 {
 207         jme->reg_ghc &= ~GHC_SWRST;
 208         jwrite32f(jme, JME_GHC, jme->reg_ghc);
 209 }
 210
 211 static void
 212 jme_reset_mac_processor(struct jme_adapter *jme)
 213 {
 214         static const u32 mask[WAKEUP_FRAME_MASK_DWNR] = {0, 0, 0, 0};
 215         u32 crc = 0xCDCDCDCD;
 216         u32 gpreg0;
 217         int i;
 218
 219         jme_reset_ghc_speed(jme);
 220         jme_reset_250A2_workaround(jme);
 221
 222         jme_mac_rxclk_on(jme);
 223         jme_mac_txclk_on(jme);
 224         udelay(1);
 225         jme_assert_ghc_reset(jme);
 226         udelay(1);
 227         jme_mac_rxclk_off(jme);
 228         jme_mac_txclk_off(jme);
 229         udelay(1);
 230         jme_clear_ghc_reset(jme);
 231         udelay(1);
 232         jme_mac_rxclk_on(jme);
 233         jme_mac_txclk_on(jme);
 234         udelay(1);
 235         jme_mac_rxclk_off(jme);
 236         jme_mac_txclk_off(jme);
 237
 238         jwrite32(jme, JME_RXDBA_LO, 0x00000000);
 239         jwrite32(jme, JME_RXDBA_HI, 0x00000000);
 240         jwrite32(jme, JME_RXQDC, 0x00000000);
 241         jwrite32(jme, JME_RXNDA, 0x00000000);
 242         jwrite32(jme, JME_TXDBA_LO, 0x00000000);
 243         jwrite32(jme, JME_TXDBA_HI, 0x00000000);
 244         jwrite32(jme, JME_TXQDC, 0x00000000);
 245         jwrite32(jme, JME_TXNDA, 0x00000000);
 246
 247         jwrite32(jme, JME_RXMCHT_LO, 0x00000000);
 248         jwrite32(jme, JME_RXMCHT_HI, 0x00000000);
 249         for (i = 0 ; i < WAKEUP_FRAME_NR ; ++i)
 250                 jme_setup_wakeup_frame(jme, mask, crc, i);
 251         if (jme->fpgaver)
 252                 gpreg0 = GPREG0_DEFAULT | GPREG0_LNKINTPOLL;
 253         else
 254                 gpreg0 = GPREG0_DEFAULT;
 255         jwrite32(jme, JME_GPREG0, gpreg0);
 256 }
 257
 258 static inline void
 259 jme_clear_pm_enable_wol(struct jme_adapter *jme)
 260 {
 261         jwrite32(jme, JME_PMCS, PMCS_STMASK | jme->reg_pmcs);
 262 }
 263
 264 static inline void
 265 jme_clear_pm_disable_wol(struct jme_adapter *jme)
 266 {
 267         jwrite32(jme, JME_PMCS, PMCS_STMASK);
 268 }
 269
 270 static int
 271 jme_reload_eeprom(struct jme_adapter *jme)
 272 {
 273         u32 val;
 274         int i;
 275
 276         val = jread32(jme, JME_SMBCSR);
 277
 278         if (val & SMBCSR_EEPROMD) {
 279                 val |= SMBCSR_CNACK;
 280                 jwrite32(jme, JME_SMBCSR, val);
 281                 val |= SMBCSR_RELOAD;
 282                 jwrite32(jme, JME_SMBCSR, val);
 283                 mdelay(12);
 284
 285                 for (i = JME_EEPROM_RELOAD_TIMEOUT; i > 0; --i) {
 286                         mdelay(1);
 287                         if ((jread32(jme, JME_SMBCSR) & SMBCSR_RELOAD) == 0)
 288                                 break;
 289                 }
 290
 291                 if (i == 0) {
 292                         pr_err("eeprom reload timeout\n");
 293                         return -EIO;
 294                 }
 295         }
 296
 297         return 0;
 298 }
 299
 300 static void
 301 jme_load_macaddr(struct net_device *netdev)
 302 {
 303         struct jme_adapter *jme = netdev_priv(netdev);
 304         unsigned char macaddr[ETH_ALEN];
 305         u32 val;
 306
 307         spin_lock_bh(&jme->macaddr_lock);
 308         val = jread32(jme, JME_RXUMA_LO);
 309         macaddr[0] = (val >>  0) & 0xFF;
 310         macaddr[1] = (val >>  8) & 0xFF;
 311         macaddr[2] = (val >> 16) & 0xFF;
 312         macaddr[3] = (val >> 24) & 0xFF;
 313         val = jread32(jme, JME_RXUMA_HI);
 314         macaddr[4] = (val >>  0) & 0xFF;
 315         macaddr[5] = (val >>  8) & 0xFF;
 316         memcpy(netdev->dev_addr, macaddr, ETH_ALEN);
 317         spin_unlock_bh(&jme->macaddr_lock);
 318 }
 319
 320 static inline void
 321 jme_set_rx_pcc(struct jme_adapter *jme, int p)
 322 {
 323         switch (p) {
 324         case PCC_OFF:
 325                 jwrite32(jme, JME_PCCRX0,
 326                         ((PCC_OFF_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
 327                         ((PCC_OFF_CNT << PCCRX_SHIFT) & PCCRX_MASK));
 328                 break;
 329         case PCC_P1:
 330                 jwrite32(jme, JME_PCCRX0,
 331                         ((PCC_P1_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
 332                         ((PCC_P1_CNT << PCCRX_SHIFT) & PCCRX_MASK));
 333                 break;
 334         case PCC_P2:
 335                 jwrite32(jme, JME_PCCRX0,
 336                         ((PCC_P2_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
 337                         ((PCC_P2_CNT << PCCRX_SHIFT) & PCCRX_MASK));
 338                 break;
 339         case PCC_P3:
 340                 jwrite32(jme, JME_PCCRX0,
 341                         ((PCC_P3_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
 342                         ((PCC_P3_CNT << PCCRX_SHIFT) & PCCRX_MASK));
 343                 break;
 344         default:
 345                 break;
 346         }
 347         wmb();
 348
 349         if (!(test_bit(JME_FLAG_POLL, &jme->flags)))
 350                 netif_info(jme, rx_status, jme->dev, "Switched to PCC_P%d\n", p);
 351 }
 352
 353 static void
 354 jme_start_irq(struct jme_adapter *jme)
 355 {
 356         register struct dynpcc_info *dpi = &(jme->dpi);
 357
 358         jme_set_rx_pcc(jme, PCC_P1);
 359         dpi->cur                = PCC_P1;
 360         dpi->attempt            = PCC_P1;
 361         dpi->cnt                = 0;
 362
 363         jwrite32(jme, JME_PCCTX,
 364                         ((PCC_TX_TO << PCCTXTO_SHIFT) & PCCTXTO_MASK) |
 365                         ((PCC_TX_CNT << PCCTX_SHIFT) & PCCTX_MASK) |
 366                         PCCTXQ0_EN
 367                 );
 368
 369         /*
 370          * Enable Interrupts
 371          */
 372         jwrite32(jme, JME_IENS, INTR_ENABLE);
 373 }
 374
 375 static inline void
 376 jme_stop_irq(struct jme_adapter *jme)
 377 {
 378         /*
 379          * Disable Interrupts
 380          */
 381         jwrite32f(jme, JME_IENC, INTR_ENABLE);
 382 }
 383
 384 static u32
 385 jme_linkstat_from_phy(struct jme_adapter *jme)
 386 {
 387         u32 phylink, bmsr;
 388
 389         phylink = jme_mdio_read(jme->dev, jme->mii_if.phy_id, 17);
 390         bmsr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMSR);
 391         if (bmsr & BMSR_ANCOMP)
 392                 phylink |= PHY_LINK_AUTONEG_COMPLETE;
 393
 394         return phylink;
 395 }
 396
 397 static inline void
 398 jme_set_phyfifo_5level(struct jme_adapter *jme)
 399 {
 400         jme_mdio_write(jme->dev, jme->mii_if.phy_id, 27, 0x0004);
 401 }
 402
 403 static inline void
 404 jme_set_phyfifo_8level(struct jme_adapter *jme)
 405 {
 406         jme_mdio_write(jme->dev, jme->mii_if.phy_id, 27, 0x0000);
 407 }
 408
 409 static int
 410 jme_check_link(struct net_device *netdev, int testonly)
 411 {
 412         struct jme_adapter *jme = netdev_priv(netdev);
 413         u32 phylink, cnt = JME_SPDRSV_TIMEOUT, bmcr;
 414         char linkmsg[64];
 415         int rc = 0;
 416
 417         linkmsg[0] = '\0';
 418
 419         if (jme->fpgaver)
 420                 phylink = jme_linkstat_from_phy(jme);
 421         else
 422                 phylink = jread32(jme, JME_PHY_LINK);
 423
 424         if (phylink & PHY_LINK_UP) {
 425                 if (!(phylink & PHY_LINK_AUTONEG_COMPLETE)) {
 426                         /*
 427                          * If we did not enable AN
 428                          * Speed/Duplex Info should be obtained from SMI
 429                          */
 430                         phylink = PHY_LINK_UP;
 431
 432                         bmcr = jme_mdio_read(jme->dev,
 433                                                 jme->mii_if.phy_id,
 434                                                 MII_BMCR);
 435
 436                         phylink |= ((bmcr & BMCR_SPEED1000) &&
 437                                         (bmcr & BMCR_SPEED100) == 0) ?
 438                                         PHY_LINK_SPEED_1000M :
 439                                         (bmcr & BMCR_SPEED100) ?
 440                                         PHY_LINK_SPEED_100M :
 441                                         PHY_LINK_SPEED_10M;
 442
 443                         phylink |= (bmcr & BMCR_FULLDPLX) ?
 444                                          PHY_LINK_DUPLEX : 0;
 445
 446                         strcat(linkmsg, "Forced: ");
 447                 } else {
 448                         /*
 449                          * Keep polling for speed/duplex resolve complete
 450                          */
 451                         while (!(phylink & PHY_LINK_SPEEDDPU_RESOLVED) &&
 452                                 --cnt) {
 453
 454                                 udelay(1);
 455
 456                                 if (jme->fpgaver)
 457                                         phylink = jme_linkstat_from_phy(jme);
 458                                 else
 459                                         phylink = jread32(jme, JME_PHY_LINK);
 460                         }
 461                         if (!cnt)
 462                                 pr_err("Waiting speed resolve timeout\n");
 463
 464                         strcat(linkmsg, "ANed: ");
 465                 }
 466
 467                 if (jme->phylink == phylink) {
 468                         rc = 1;
 469                         goto out;
 470                 }
 471                 if (testonly)
 472                         goto out;
 473
 474                 jme->phylink = phylink;
 475
 476                 /*
 477                  * The speed/duplex setting of jme->reg_ghc already cleared
 478                  * by jme_reset_mac_processor()
 479                  */
 480                 switch (phylink & PHY_LINK_SPEED_MASK) {
 481                 case PHY_LINK_SPEED_10M:
 482                         jme->reg_ghc |= GHC_SPEED_10M;
 483                         strcat(linkmsg, "10 Mbps, ");
 484                         break;
 485                 case PHY_LINK_SPEED_100M:
 486                         jme->reg_ghc |= GHC_SPEED_100M;
 487                         strcat(linkmsg, "100 Mbps, ");
 488                         break;
 489                 case PHY_LINK_SPEED_1000M:
 490                         jme->reg_ghc |= GHC_SPEED_1000M;
 491                         strcat(linkmsg, "1000 Mbps, ");
 492                         break;
 493                 default:
 494                         break;
 495                 }
 496
 497                 if (phylink & PHY_LINK_DUPLEX) {
 498                         jwrite32(jme, JME_TXMCS, TXMCS_DEFAULT);
 499                         jwrite32(jme, JME_TXTRHD, TXTRHD_FULLDUPLEX);
 500                         jme->reg_ghc |= GHC_DPX;
 501                 } else {
 502                         jwrite32(jme, JME_TXMCS, TXMCS_DEFAULT |
 503                                                 TXMCS_BACKOFF |
 504                                                 TXMCS_CARRIERSENSE |
 505                                                 TXMCS_COLLISION);
 506                         jwrite32(jme, JME_TXTRHD, TXTRHD_HALFDUPLEX);
 507                 }
 508
 509                 jwrite32(jme, JME_GHC, jme->reg_ghc);
 510
 511                 if (is_buggy250(jme->pdev->device, jme->chiprev)) {
 512                         jme->reg_gpreg1 &= ~(GPREG1_HALFMODEPATCH |
 513                                              GPREG1_RSSPATCH);
 514                         if (!(phylink & PHY_LINK_DUPLEX))
 515                                 jme->reg_gpreg1 |= GPREG1_HALFMODEPATCH;
 516                         switch (phylink & PHY_LINK_SPEED_MASK) {
 517                         case PHY_LINK_SPEED_10M:
 518                                 jme_set_phyfifo_8level(jme);
 519                                 jme->reg_gpreg1 |= GPREG1_RSSPATCH;
 520                                 break;
 521                         case PHY_LINK_SPEED_100M:
 522                                 jme_set_phyfifo_5level(jme);
 523                                 jme->reg_gpreg1 |= GPREG1_RSSPATCH;
 524                                 break;
 525                         case PHY_LINK_SPEED_1000M:
 526                                 jme_set_phyfifo_8level(jme);
 527                                 break;
 528                         default:
 529                                 break;
 530                         }
 531                 }
 532                 jwrite32(jme, JME_GPREG1, jme->reg_gpreg1);
 533
 534                 strcat(linkmsg, (phylink & PHY_LINK_DUPLEX) ?
 535                                         "Full-Duplex, " :
 536                                         "Half-Duplex, ");
 537                 strcat(linkmsg, (phylink & PHY_LINK_MDI_STAT) ?
 538                                         "MDI-X" :
 539                                         "MDI");
 540                 netif_info(jme, link, jme->dev, "Link is up at %s\n", linkmsg);
 541                 netif_carrier_on(netdev);
 542         } else {
 543                 if (testonly)
 544                         goto out;
 545
 546                 netif_info(jme, link, jme->dev, "Link is down\n");
 547                 jme->phylink = 0;
 548                 netif_carrier_off(netdev);
 549         }
 550
 551 out:
 552         return rc;
 553 }
 554
 555 static int
 556 jme_setup_tx_resources(struct jme_adapter *jme)
 557 {
 558         struct jme_ring *txring = &(jme->txring[0]);
 559
 560         txring->alloc = dma_alloc_coherent(&(jme->pdev->dev),
 561                                    TX_RING_ALLOC_SIZE(jme->tx_ring_size),
 562                                    &(txring->dmaalloc),
 563                                    GFP_ATOMIC);
 564
 565         if (!txring->alloc)
 566                 goto err_set_null;
 567
 568         /*
 569          * 16 Bytes align
 570          */
 571         txring->desc            = (void *)ALIGN((unsigned long)(txring->alloc),
 572                                                 RING_DESC_ALIGN);
 573         txring->dma             = ALIGN(txring->dmaalloc, RING_DESC_ALIGN);
 574         txring->next_to_use     = 0;
 575         atomic_set(&txring->next_to_clean, 0);
 576         atomic_set(&txring->nr_free, jme->tx_ring_size);
 577
 578         txring->bufinf          = kcalloc(jme->tx_ring_size,
 579                                                 sizeof(struct jme_buffer_info),
 580                                                 GFP_ATOMIC);
 581         if (unlikely(!(txring->bufinf)))
 582                 goto err_free_txring;
 583
 584         return 0;
 585
 586 err_free_txring:
 587         dma_free_coherent(&(jme->pdev->dev),
 588                           TX_RING_ALLOC_SIZE(jme->tx_ring_size),
 589                           txring->alloc,
 590                           txring->dmaalloc);
 591
 592 err_set_null:
 593         txring->desc = NULL;
 594         txring->dmaalloc = 0;
 595         txring->dma = 0;
 596         txring->bufinf = NULL;
 597
 598         return -ENOMEM;
 599 }
 600
 601 static void
 602 jme_free_tx_resources(struct jme_adapter *jme)
 603 {
 604         int i;
 605         struct jme_ring *txring = &(jme->txring[0]);
 606         struct jme_buffer_info *txbi;
 607
 608         if (txring->alloc) {
 609                 if (txring->bufinf) {
 610                         for (i = 0 ; i < jme->tx_ring_size ; ++i) {
 611                                 txbi = txring->bufinf + i;
 612                                 if (txbi->skb) {
 613                                         dev_kfree_skb(txbi->skb);
 614                                         txbi->skb = NULL;
 615                                 }
 616                                 txbi->mapping           = 0;
 617                                 txbi->len               = 0;
 618                                 txbi->nr_desc           = 0;
 619                                 txbi->start_xmit        = 0;
 620                         }
 621                         kfree(txring->bufinf);
 622                 }
 623
 624                 dma_free_coherent(&(jme->pdev->dev),
 625                                   TX_RING_ALLOC_SIZE(jme->tx_ring_size),
 626                                   txring->alloc,
 627                                   txring->dmaalloc);
 628
 629                 txring->alloc           = NULL;
 630                 txring->desc            = NULL;
 631                 txring->dmaalloc        = 0;
 632                 txring->dma             = 0;
 633                 txring->bufinf          = NULL;
 634         }
 635         txring->next_to_use     = 0;
 636         atomic_set(&txring->next_to_clean, 0);
 637         atomic_set(&txring->nr_free, 0);
 638 }
 639
 640 static inline void
 641 jme_enable_tx_engine(struct jme_adapter *jme)
 642 {
 643         /*
 644          * Select Queue 0
 645          */
 646         jwrite32(jme, JME_TXCS, TXCS_DEFAULT | TXCS_SELECT_QUEUE0);
 647         wmb();
 648
 649         /*
 650          * Setup TX Queue 0 DMA Bass Address
 651          */
 652         jwrite32(jme, JME_TXDBA_LO, (__u64)jme->txring[0].dma & 0xFFFFFFFFUL);
 653         jwrite32(jme, JME_TXDBA_HI, (__u64)(jme->txring[0].dma) >> 32);
 654         jwrite32(jme, JME_TXNDA, (__u64)jme->txring[0].dma & 0xFFFFFFFFUL);
 655
 656         /*
 657          * Setup TX Descptor Count
 658          */
 659         jwrite32(jme, JME_TXQDC, jme->tx_ring_size);
 660
 661         /*
 662          * Enable TX Engine
 663          */
 664         wmb();
 665         jwrite32f(jme, JME_TXCS, jme->reg_txcs |
 666                                 TXCS_SELECT_QUEUE0 |
 667                                 TXCS_ENABLE);
 668
 669         /*
 670          * Start clock for TX MAC Processor
 671          */
 672         jme_mac_txclk_on(jme);
 673 }
 674
 675 static inline void
 676 jme_disable_tx_engine(struct jme_adapter *jme)
 677 {
 678         int i;
 679         u32 val;
 680
 681         /*
 682          * Disable TX Engine
 683          */
 684         jwrite32(jme, JME_TXCS, jme->reg_txcs | TXCS_SELECT_QUEUE0);
 685         wmb();
 686
 687         val = jread32(jme, JME_TXCS);
 688         for (i = JME_TX_DISABLE_TIMEOUT ; (val & TXCS_ENABLE) && i > 0 ; --i) {
 689                 mdelay(1);
 690                 val = jread32(jme, JME_TXCS);
 691                 rmb();
 692         }
 693
 694         if (!i)
 695                 pr_err("Disable TX engine timeout\n");
 696
 697         /*
 698          * Stop clock for TX MAC Processor
 699          */
 700         jme_mac_txclk_off(jme);
 701 }
 702
 703 static void
 704 jme_set_clean_rxdesc(struct jme_adapter *jme, int i)
 705 {
 706         struct jme_ring *rxring = &(jme->rxring[0]);
 707         register struct rxdesc *rxdesc = rxring->desc;
 708         struct jme_buffer_info *rxbi = rxring->bufinf;
 709         rxdesc += i;
 710         rxbi += i;
 711
 712         rxdesc->dw[0] = 0;
 713         rxdesc->dw[1] = 0;
 714         rxdesc->desc1.bufaddrh  = cpu_to_le32((__u64)rxbi->mapping >> 32);
 715         rxdesc->desc1.bufaddrl  = cpu_to_le32(
 716                                         (__u64)rxbi->mapping & 0xFFFFFFFFUL);
 717         rxdesc->desc1.datalen   = cpu_to_le16(rxbi->len);
 718         if (jme->dev->features & NETIF_F_HIGHDMA)
 719                 rxdesc->desc1.flags = RXFLAG_64BIT;
 720         wmb();
 721         rxdesc->desc1.flags     |= RXFLAG_OWN | RXFLAG_INT;
 722 }
 723
 724 static int
 725 jme_make_new_rx_buf(struct jme_adapter *jme, int i)
 726 {
 727         struct jme_ring *rxring = &(jme->rxring[0]);
 728         struct jme_buffer_info *rxbi = rxring->bufinf + i;
 729         struct sk_buff *skb;
 730         dma_addr_t mapping;
 731
 732         skb = netdev_alloc_skb(jme->dev,
 733                 jme->dev->mtu + RX_EXTRA_LEN);
 734         if (unlikely(!skb))
 735                 return -ENOMEM;
 736
 737         mapping = dma_map_page(&jme->pdev->dev, virt_to_page(skb->data),
 738                                offset_in_page(skb->data), skb_tailroom(skb),
 739                                DMA_FROM_DEVICE);
 740         if (unlikely(dma_mapping_error(&jme->pdev->dev, mapping))) {
 741                 dev_kfree_skb(skb);
 742                 return -ENOMEM;
 743         }
 744
 745         if (likely(rxbi->mapping))
 746                 dma_unmap_page(&jme->pdev->dev, rxbi->mapping, rxbi->len,
 747                                DMA_FROM_DEVICE);
 748
 749         rxbi->skb = skb;
 750         rxbi->len = skb_tailroom(skb);
 751         rxbi->mapping = mapping;
 752         return 0;
 753 }
 754
 755 static void
 756 jme_free_rx_buf(struct jme_adapter *jme, int i)
 757 {
 758         struct jme_ring *rxring = &(jme->rxring[0]);
 759         struct jme_buffer_info *rxbi = rxring->bufinf;
 760         rxbi += i;
 761
 762         if (rxbi->skb) {
 763                 dma_unmap_page(&jme->pdev->dev, rxbi->mapping, rxbi->len,
 764                                DMA_FROM_DEVICE);
 765                 dev_kfree_skb(rxbi->skb);
 766                 rxbi->skb = NULL;
 767                 rxbi->mapping = 0;
 768                 rxbi->len = 0;
 769         }
 770 }
 771
 772 static void
 773 jme_free_rx_resources(struct jme_adapter *jme)
 774 {
 775         int i;
 776         struct jme_ring *rxring = &(jme->rxring[0]);
 777
 778         if (rxring->alloc) {
 779                 if (rxring->bufinf) {
 780                         for (i = 0 ; i < jme->rx_ring_size ; ++i)
 781                                 jme_free_rx_buf(jme, i);
 782                         kfree(rxring->bufinf);
 783                 }
 784
 785                 dma_free_coherent(&(jme->pdev->dev),
 786                                   RX_RING_ALLOC_SIZE(jme->rx_ring_size),
 787                                   rxring->alloc,
 788                                   rxring->dmaalloc);
 789                 rxring->alloc    = NULL;
 790                 rxring->desc     = NULL;
 791                 rxring->dmaalloc = 0;
 792                 rxring->dma      = 0;
 793                 rxring->bufinf   = NULL;
 794         }
 795         rxring->next_to_use   = 0;
 796         atomic_set(&rxring->next_to_clean, 0);
 797 }
 798
 799 static int
 800 jme_setup_rx_resources(struct jme_adapter *jme)
 801 {
 802         int i;
 803         struct jme_ring *rxring = &(jme->rxring[0]);
 804
 805         rxring->alloc = dma_alloc_coherent(&(jme->pdev->dev),
 806                                    RX_RING_ALLOC_SIZE(jme->rx_ring_size),
 807                                    &(rxring->dmaalloc),
 808                                    GFP_ATOMIC);
 809         if (!rxring->alloc)
 810                 goto err_set_null;
 811
 812         /*
 813          * 16 Bytes align
 814          */
 815         rxring->desc            = (void *)ALIGN((unsigned long)(rxring->alloc),
 816                                                 RING_DESC_ALIGN);
 817         rxring->dma             = ALIGN(rxring->dmaalloc, RING_DESC_ALIGN);
 818         rxring->next_to_use     = 0;
 819         atomic_set(&rxring->next_to_clean, 0);
 820
 821         rxring->bufinf          = kcalloc(jme->rx_ring_size,
 822                                                 sizeof(struct jme_buffer_info),
 823                                                 GFP_ATOMIC);
 824         if (unlikely(!(rxring->bufinf)))
 825                 goto err_free_rxring;
 826
 827         /*
 828          * Initiallize Receive Descriptors
 829          */
 830         for (i = 0 ; i < jme->rx_ring_size ; ++i) {
 831                 if (unlikely(jme_make_new_rx_buf(jme, i))) {
 832                         jme_free_rx_resources(jme);
 833                         return -ENOMEM;
 834                 }
 835
 836                 jme_set_clean_rxdesc(jme, i);
 837         }
 838
 839         return 0;
 840
 841 err_free_rxring:
 842         dma_free_coherent(&(jme->pdev->dev),
 843                           RX_RING_ALLOC_SIZE(jme->rx_ring_size),
 844                           rxring->alloc,
 845                           rxring->dmaalloc);
 846 err_set_null:
 847         rxring->desc = NULL;
 848         rxring->dmaalloc = 0;
 849         rxring->dma = 0;
 850         rxring->bufinf = NULL;
 851
 852         return -ENOMEM;
 853 }
 854
 855 static inline void
 856 jme_enable_rx_engine(struct jme_adapter *jme)
 857 {
 858         /*
 859          * Select Queue 0
 860          */
 861         jwrite32(jme, JME_RXCS, jme->reg_rxcs |
 862                                 RXCS_QUEUESEL_Q0);
 863         wmb();
 864
 865         /*
 866          * Setup RX DMA Bass Address
 867          */
 868         jwrite32(jme, JME_RXDBA_LO, (__u64)(jme->rxring[0].dma) & 0xFFFFFFFFUL);
 869         jwrite32(jme, JME_RXDBA_HI, (__u64)(jme->rxring[0].dma) >> 32);
 870         jwrite32(jme, JME_RXNDA, (__u64)(jme->rxring[0].dma) & 0xFFFFFFFFUL);
 871
 872         /*
 873          * Setup RX Descriptor Count
 874          */
 875         jwrite32(jme, JME_RXQDC, jme->rx_ring_size);
 876
 877         /*
 878          * Setup Unicast Filter
 879          */
 880         jme_set_unicastaddr(jme->dev);
 881         jme_set_multi(jme->dev);
 882
 883         /*
 884          * Enable RX Engine
 885          */
 886         wmb();
 887         jwrite32f(jme, JME_RXCS, jme->reg_rxcs |
 888                                 RXCS_QUEUESEL_Q0 |
 889                                 RXCS_ENABLE |
 890                                 RXCS_QST);
 891
 892         /*
 893          * Start clock for RX MAC Processor
 894          */
 895         jme_mac_rxclk_on(jme);
 896 }
 897
 898 static inline void
 899 jme_restart_rx_engine(struct jme_adapter *jme)
 900 {
 901         /*
 902          * Start RX Engine
 903          */
 904         jwrite32(jme, JME_RXCS, jme->reg_rxcs |
 905                                 RXCS_QUEUESEL_Q0 |
 906                                 RXCS_ENABLE |
 907                                 RXCS_QST);
 908 }
 909
 910 static inline void
 911 jme_disable_rx_engine(struct jme_adapter *jme)
 912 {
 913         int i;
 914         u32 val;
 915
 916         /*
 917          * Disable RX Engine
 918          */
 919         jwrite32(jme, JME_RXCS, jme->reg_rxcs);
 920         wmb();
 921
 922         val = jread32(jme, JME_RXCS);
 923         for (i = JME_RX_DISABLE_TIMEOUT ; (val & RXCS_ENABLE) && i > 0 ; --i) {
 924                 mdelay(1);
 925                 val = jread32(jme, JME_RXCS);
 926                 rmb();
 927         }
 928
 929         if (!i)
 930                 pr_err("Disable RX engine timeout\n");
 931
 932         /*
 933          * Stop clock for RX MAC Processor
 934          */
 935         jme_mac_rxclk_off(jme);
 936 }
 937
 938 static u16
 939 jme_udpsum(struct sk_buff *skb)
 940 {
 941         u16 csum = 0xFFFFu;
 942
 943         if (skb->len < (ETH_HLEN + sizeof(struct iphdr)))
 944                 return csum;
 945         if (skb->protocol != htons(ETH_P_IP))
 946                 return csum;
 947         skb_set_network_header(skb, ETH_HLEN);
 948         if ((ip_hdr(skb)->protocol != IPPROTO_UDP) ||
 949             (skb->len < (ETH_HLEN +
 950                         (ip_hdr(skb)->ihl << 2) +
 951                         sizeof(struct udphdr)))) {
 952                 skb_reset_network_header(skb);
 953                 return csum;
 954         }
 955         skb_set_transport_header(skb,
 956                         ETH_HLEN + (ip_hdr(skb)->ihl << 2));
 957         csum = udp_hdr(skb)->check;
 958         skb_reset_transport_header(skb);
 959         skb_reset_network_header(skb);
 960
 961         return csum;
 962 }
 963
 964 static int
 965 jme_rxsum_ok(struct jme_adapter *jme, u16 flags, struct sk_buff *skb)
 966 {
 967         if (!(flags & (RXWBFLAG_TCPON | RXWBFLAG_UDPON | RXWBFLAG_IPV4)))
 968                 return false;
 969
 970         if (unlikely((flags & (RXWBFLAG_MF | RXWBFLAG_TCPON | RXWBFLAG_TCPCS))
 971                         == RXWBFLAG_TCPON)) {
 972                 if (flags & RXWBFLAG_IPV4)
 973                         netif_err(jme, rx_err, jme->dev, "TCP Checksum error\n");
 974                 return false;
 975         }
 976
 977         if (unlikely((flags & (RXWBFLAG_MF | RXWBFLAG_UDPON | RXWBFLAG_UDPCS))
 978                         == RXWBFLAG_UDPON) && jme_udpsum(skb)) {
 979                 if (flags & RXWBFLAG_IPV4)
 980                         netif_err(jme, rx_err, jme->dev, "UDP Checksum error\n");
 981                 return false;
 982         }
 983
 984         if (unlikely((flags & (RXWBFLAG_IPV4 | RXWBFLAG_IPCS))
 985                         == RXWBFLAG_IPV4)) {
 986                 netif_err(jme, rx_err, jme->dev, "IPv4 Checksum error\n");
 987                 return false;
 988         }
 989
 990         return true;
 991 }
 992
 993 static void
 994 jme_alloc_and_feed_skb(struct jme_adapter *jme, int idx)
 995 {
 996         struct jme_ring *rxring = &(jme->rxring[0]);
 997         struct rxdesc *rxdesc = rxring->desc;
 998         struct jme_buffer_info *rxbi = rxring->bufinf;
 999         struct sk_buff *skb;
1000         int framesize;
1001
1002         rxdesc += idx;
1003         rxbi += idx;
1004
1005         skb = rxbi->skb;
1006         dma_sync_single_for_cpu(&jme->pdev->dev, rxbi->mapping, rxbi->len,
1007                                 DMA_FROM_DEVICE);
1008
1009         if (unlikely(jme_make_new_rx_buf(jme, idx))) {
1010                 dma_sync_single_for_device(&jme->pdev->dev, rxbi->mapping,
1011                                            rxbi->len, DMA_FROM_DEVICE);
1012
1013                 ++(NET_STAT(jme).rx_dropped);
1014         } else {
1015                 framesize = le16_to_cpu(rxdesc->descwb.framesize)
1016                                 - RX_PREPAD_SIZE;
1017
1018                 skb_reserve(skb, RX_PREPAD_SIZE);
1019                 skb_put(skb, framesize);
1020                 skb->protocol = eth_type_trans(skb, jme->dev);
1021
1022                 if (jme_rxsum_ok(jme, le16_to_cpu(rxdesc->descwb.flags), skb))
1023                         skb->ip_summed = CHECKSUM_UNNECESSARY;
1024                 else
1025                         skb_checksum_none_assert(skb);
1026
1027                 if (rxdesc->descwb.flags & cpu_to_le16(RXWBFLAG_TAGON)) {
1028                         u16 vid = le16_to_cpu(rxdesc->descwb.vlan);
1029
1030                         __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid);
1031                         NET_STAT(jme).rx_bytes += 4;
1032                 }
1033                 jme->jme_rx(skb);
1034
1035                 if ((rxdesc->descwb.flags & cpu_to_le16(RXWBFLAG_DEST)) ==
1036                     cpu_to_le16(RXWBFLAG_DEST_MUL))
1037                         ++(NET_STAT(jme).multicast);
1038
1039                 NET_STAT(jme).rx_bytes += framesize;
1040                 ++(NET_STAT(jme).rx_packets);
1041         }
1042
1043         jme_set_clean_rxdesc(jme, idx);
1044
1045 }
1046
1047 static int
1048 jme_process_receive(struct jme_adapter *jme, int limit)
1049 {
1050         struct jme_ring *rxring = &(jme->rxring[0]);
1051         struct rxdesc *rxdesc;
1052         int i, j, ccnt, desccnt, mask = jme->rx_ring_mask;
1053
1054         if (unlikely(!atomic_dec_and_test(&jme->rx_cleaning)))
1055                 goto out_inc;
1056
1057         if (unlikely(atomic_read(&jme->link_changing) != 1))
1058                 goto out_inc;
1059
1060         if (unlikely(!netif_carrier_ok(jme->dev)))
1061                 goto out_inc;
1062
1063         i = atomic_read(&rxring->next_to_clean);
1064         while (limit > 0) {
1065                 rxdesc = rxring->desc;
1066                 rxdesc += i;
1067
1068                 if ((rxdesc->descwb.flags & cpu_to_le16(RXWBFLAG_OWN)) ||
1069                 !(rxdesc->descwb.desccnt & RXWBDCNT_WBCPL))
1070                         goto out;
1071                 --limit;
1072
1073                 rmb();
1074                 desccnt = rxdesc->descwb.desccnt & RXWBDCNT_DCNT;
1075
1076                 if (unlikely(desccnt > 1 ||
1077                 rxdesc->descwb.errstat & RXWBERR_ALLERR)) {
1078
1079                         if (rxdesc->descwb.errstat & RXWBERR_CRCERR)
1080                                 ++(NET_STAT(jme).rx_crc_errors);
1081                         else if (rxdesc->descwb.errstat & RXWBERR_OVERUN)
1082                                 ++(NET_STAT(jme).rx_fifo_errors);
1083                         else
1084                                 ++(NET_STAT(jme).rx_errors);
1085
1086                         if (desccnt > 1)
1087                                 limit -= desccnt - 1;
1088
1089                         for (j = i, ccnt = desccnt ; ccnt-- ; ) {
1090                                 jme_set_clean_rxdesc(jme, j);
1091                                 j = (j + 1) & (mask);
1092                         }
1093
1094                 } else {
1095                         jme_alloc_and_feed_skb(jme, i);
1096                 }
1097
1098                 i = (i + desccnt) & (mask);
1099         }
1100
1101 out:
1102         atomic_set(&rxring->next_to_clean, i);
1103
1104 out_inc:
1105         atomic_inc(&jme->rx_cleaning);
1106
1107         return limit > 0 ? limit : 0;
1108
1109 }
1110
1111 static void
1112 jme_attempt_pcc(struct dynpcc_info *dpi, int atmp)
1113 {
1114         if (likely(atmp == dpi->cur)) {
1115                 dpi->cnt = 0;
1116                 return;
1117         }
1118
1119         if (dpi->attempt == atmp) {
1120                 ++(dpi->cnt);
1121         } else {
1122                 dpi->attempt = atmp;
1123                 dpi->cnt = 0;
1124         }
1125
1126 }
1127
1128 static void
1129 jme_dynamic_pcc(struct jme_adapter *jme)
1130 {
1131         register struct dynpcc_info *dpi = &(jme->dpi);
1132
1133         if ((NET_STAT(jme).rx_bytes - dpi->last_bytes) > PCC_P3_THRESHOLD)
1134                 jme_attempt_pcc(dpi, PCC_P3);
1135         else if ((NET_STAT(jme).rx_packets - dpi->last_pkts) > PCC_P2_THRESHOLD ||
1136                  dpi->intr_cnt > PCC_INTR_THRESHOLD)
1137                 jme_attempt_pcc(dpi, PCC_P2);
1138         else
1139                 jme_attempt_pcc(dpi, PCC_P1);
1140
1141         if (unlikely(dpi->attempt != dpi->cur && dpi->cnt > 5)) {
1142                 if (dpi->attempt < dpi->cur)
1143                         tasklet_schedule(&jme->rxclean_task);
1144                 jme_set_rx_pcc(jme, dpi->attempt);
1145                 dpi->cur = dpi->attempt;
1146                 dpi->cnt = 0;
1147         }
1148 }
1149
1150 static void
1151 jme_start_pcc_timer(struct jme_adapter *jme)
1152 {
1153         struct dynpcc_info *dpi = &(jme->dpi);
1154         dpi->last_bytes         = NET_STAT(jme).rx_bytes;
1155         dpi->last_pkts          = NET_STAT(jme).rx_packets;
1156         dpi->intr_cnt           = 0;
1157         jwrite32(jme, JME_TMCSR,
1158                 TMCSR_EN | ((0xFFFFFF - PCC_INTERVAL_US) & TMCSR_CNT));
1159 }
1160
1161 static inline void
1162 jme_stop_pcc_timer(struct jme_adapter *jme)
1163 {
1164         jwrite32(jme, JME_TMCSR, 0);
1165 }
1166
1167 static void
1168 jme_shutdown_nic(struct jme_adapter *jme)
1169 {
1170         u32 phylink;
1171
1172         phylink = jme_linkstat_from_phy(jme);
1173
1174         if (!(phylink & PHY_LINK_UP)) {
1175                 /*
1176                  * Disable all interrupt before issue timer
1177                  */
1178                 jme_stop_irq(jme);
1179                 jwrite32(jme, JME_TIMER2, TMCSR_EN | 0xFFFFFE);
1180         }
1181 }
1182
1183 static void
1184 jme_pcc_tasklet(struct tasklet_struct *t)
1185 {
1186         struct jme_adapter *jme = from_tasklet(jme, t, pcc_task);
1187         struct net_device *netdev = jme->dev;
1188
1189         if (unlikely(test_bit(JME_FLAG_SHUTDOWN, &jme->flags))) {
1190                 jme_shutdown_nic(jme);
1191                 return;
1192         }
1193
1194         if (unlikely(!netif_carrier_ok(netdev) ||
1195                 (atomic_read(&jme->link_changing) != 1)
1196         )) {
1197                 jme_stop_pcc_timer(jme);
1198                 return;
1199         }
1200
1201         if (!(test_bit(JME_FLAG_POLL, &jme->flags)))
1202                 jme_dynamic_pcc(jme);
1203
1204         jme_start_pcc_timer(jme);
1205 }
1206
1207 static inline void
1208 jme_polling_mode(struct jme_adapter *jme)
1209 {
1210         jme_set_rx_pcc(jme, PCC_OFF);
1211 }
1212
1213 static inline void
1214 jme_interrupt_mode(struct jme_adapter *jme)
1215 {
1216         jme_set_rx_pcc(jme, PCC_P1);
1217 }
1218
1219 static inline int
1220 jme_pseudo_hotplug_enabled(struct jme_adapter *jme)
1221 {
1222         u32 apmc;
1223         apmc = jread32(jme, JME_APMC);
1224         return apmc & JME_APMC_PSEUDO_HP_EN;
1225 }
1226
1227 static void
1228 jme_start_shutdown_timer(struct jme_adapter *jme)
1229 {
1230         u32 apmc;
1231
1232         apmc = jread32(jme, JME_APMC) | JME_APMC_PCIE_SD_EN;
1233         apmc &= ~JME_APMC_EPIEN_CTRL;
1234         if (!no_extplug) {
1235                 jwrite32f(jme, JME_APMC, apmc | JME_APMC_EPIEN_CTRL_EN);
1236                 wmb();
1237         }
1238         jwrite32f(jme, JME_APMC, apmc);
1239
1240         jwrite32f(jme, JME_TIMER2, 0);
1241         set_bit(JME_FLAG_SHUTDOWN, &jme->flags);
1242         jwrite32(jme, JME_TMCSR,
1243                 TMCSR_EN | ((0xFFFFFF - APMC_PHP_SHUTDOWN_DELAY) & TMCSR_CNT));
1244 }
1245
1246 static void
1247 jme_stop_shutdown_timer(struct jme_adapter *jme)
1248 {
1249         u32 apmc;
1250
1251         jwrite32f(jme, JME_TMCSR, 0);
1252         jwrite32f(jme, JME_TIMER2, 0);
1253         clear_bit(JME_FLAG_SHUTDOWN, &jme->flags);
1254
1255         apmc = jread32(jme, JME_APMC);
1256         apmc &= ~(JME_APMC_PCIE_SD_EN | JME_APMC_EPIEN_CTRL);
1257         jwrite32f(jme, JME_APMC, apmc | JME_APMC_EPIEN_CTRL_DIS);
1258         wmb();
1259         jwrite32f(jme, JME_APMC, apmc);
1260 }
1261
1262 static void jme_link_change_work(struct work_struct *work)
1263 {
1264         struct jme_adapter *jme = container_of(work, struct jme_adapter, linkch_task);
1265         struct net_device *netdev = jme->dev;
1266         int rc;
1267
1268         while (!atomic_dec_and_test(&jme->link_changing)) {
1269                 atomic_inc(&jme->link_changing);
1270                 netif_info(jme, intr, jme->dev, "Get link change lock failed\n");
1271                 while (atomic_read(&jme->link_changing) != 1)
1272                         netif_info(jme, intr, jme->dev, "Waiting link change lock\n");
1273         }
1274
1275         if (jme_check_link(netdev, 1) && jme->old_mtu == netdev->mtu)
1276                 goto out;
1277
1278         jme->old_mtu = netdev->mtu;
1279         netif_stop_queue(netdev);
1280         if (jme_pseudo_hotplug_enabled(jme))
1281                 jme_stop_shutdown_timer(jme);
1282
1283         jme_stop_pcc_timer(jme);
1284         tasklet_disable(&jme->txclean_task);
1285         tasklet_disable(&jme->rxclean_task);
1286         tasklet_disable(&jme->rxempty_task);
1287
1288         if (netif_carrier_ok(netdev)) {
1289                 jme_disable_rx_engine(jme);
1290                 jme_disable_tx_engine(jme);
1291                 jme_reset_mac_processor(jme);
1292                 jme_free_rx_resources(jme);
1293                 jme_free_tx_resources(jme);
1294
1295                 if (test_bit(JME_FLAG_POLL, &jme->flags))
1296                         jme_polling_mode(jme);
1297
1298                 netif_carrier_off(netdev);
1299         }
1300
1301         jme_check_link(netdev, 0);
1302         if (netif_carrier_ok(netdev)) {
1303                 rc = jme_setup_rx_resources(jme);
1304                 if (rc) {
1305                         pr_err("Allocating resources for RX error, Device STOPPED!\n");
1306                         goto out_enable_tasklet;
1307                 }
1308
1309                 rc = jme_setup_tx_resources(jme);
1310                 if (rc) {
1311                         pr_err("Allocating resources for TX error, Device STOPPED!\n");
1312                         goto err_out_free_rx_resources;
1313                 }
1314
1315                 jme_enable_rx_engine(jme);
1316                 jme_enable_tx_engine(jme);
1317
1318                 netif_start_queue(netdev);
1319
1320                 if (test_bit(JME_FLAG_POLL, &jme->flags))
1321                         jme_interrupt_mode(jme);
1322
1323                 jme_start_pcc_timer(jme);
1324         } else if (jme_pseudo_hotplug_enabled(jme)) {
1325                 jme_start_shutdown_timer(jme);
1326         }
1327
1328         goto out_enable_tasklet;
1329
1330 err_out_free_rx_resources:
1331         jme_free_rx_resources(jme);
1332 out_enable_tasklet:
1333         tasklet_enable(&jme->txclean_task);
1334         tasklet_enable(&jme->rxclean_task);
1335         tasklet_enable(&jme->rxempty_task);
1336 out:
1337         atomic_inc(&jme->link_changing);
1338 }
1339
1340 static void
1341 jme_rx_clean_tasklet(struct tasklet_struct *t)
1342 {
1343         struct jme_adapter *jme = from_tasklet(jme, t, rxclean_task);
1344         struct dynpcc_info *dpi = &(jme->dpi);
1345
1346         jme_process_receive(jme, jme->rx_ring_size);
1347         ++(dpi->intr_cnt);
1348
1349 }
1350
1351 static int
1352 jme_poll(JME_NAPI_HOLDER(holder), JME_NAPI_WEIGHT(budget))
1353 {
1354         struct jme_adapter *jme = jme_napi_priv(holder);
1355         int rest;
1356
1357         rest = jme_process_receive(jme, JME_NAPI_WEIGHT_VAL(budget));
1358
1359         while (atomic_read(&jme->rx_empty) > 0) {
1360                 atomic_dec(&jme->rx_empty);
1361                 ++(NET_STAT(jme).rx_dropped);
1362                 jme_restart_rx_engine(jme);
1363         }
1364         atomic_inc(&jme->rx_empty);
1365
1366         if (rest) {
1367                 JME_RX_COMPLETE(netdev, holder);
1368                 jme_interrupt_mode(jme);
1369         }
1370
1371         JME_NAPI_WEIGHT_SET(budget, rest);
1372         return JME_NAPI_WEIGHT_VAL(budget) - rest;
1373 }
1374
1375 static void
1376 jme_rx_empty_tasklet(struct tasklet_struct *t)
1377 {
1378         struct jme_adapter *jme = from_tasklet(jme, t, rxempty_task);
1379
1380         if (unlikely(atomic_read(&jme->link_changing) != 1))
1381                 return;
1382
1383         if (unlikely(!netif_carrier_ok(jme->dev)))
1384                 return;
1385
1386         netif_info(jme, rx_status, jme->dev, "RX Queue Full!\n");
1387
1388         jme_rx_clean_tasklet(&jme->rxclean_task);
1389
1390         while (atomic_read(&jme->rx_empty) > 0) {
1391                 atomic_dec(&jme->rx_empty);
1392                 ++(NET_STAT(jme).rx_dropped);
1393                 jme_restart_rx_engine(jme);
1394         }
1395         atomic_inc(&jme->rx_empty);
1396 }
1397
1398 static void
1399 jme_wake_queue_if_stopped(struct jme_adapter *jme)
1400 {
1401         struct jme_ring *txring = &(jme->txring[0]);
1402
1403         smp_wmb();
1404         if (unlikely(netif_queue_stopped(jme->dev) &&
1405         atomic_read(&txring->nr_free) >= (jme->tx_wake_threshold))) {
1406                 netif_info(jme, tx_done, jme->dev, "TX Queue Waked\n");
1407                 netif_wake_queue(jme->dev);
1408         }
1409
1410 }
1411
1412 static void jme_tx_clean_tasklet(struct tasklet_struct *t)
1413 {
1414         struct jme_adapter *jme = from_tasklet(jme, t, txclean_task);
1415         struct jme_ring *txring = &(jme->txring[0]);
1416         struct txdesc *txdesc = txring->desc;
1417         struct jme_buffer_info *txbi = txring->bufinf, *ctxbi, *ttxbi;
1418         int i, j, cnt = 0, max, err, mask;
1419
1420         tx_dbg(jme, "Into txclean\n");
1421
1422         if (unlikely(!atomic_dec_and_test(&jme->tx_cleaning)))
1423                 goto out;
1424
1425         if (unlikely(atomic_read(&jme->link_changing) != 1))
1426                 goto out;
1427
1428         if (unlikely(!netif_carrier_ok(jme->dev)))
1429                 goto out;
1430
1431         max = jme->tx_ring_size - atomic_read(&txring->nr_free);
1432         mask = jme->tx_ring_mask;
1433
1434         for (i = atomic_read(&txring->next_to_clean) ; cnt < max ; ) {
1435
1436                 ctxbi = txbi + i;
1437
1438                 if (likely(ctxbi->skb &&
1439                 !(txdesc[i].descwb.flags & TXWBFLAG_OWN))) {
1440
1441                         tx_dbg(jme, "txclean: %d+%d@%lu\n",
1442                                i, ctxbi->nr_desc, jiffies);
1443
1444                         err = txdesc[i].descwb.flags & TXWBFLAG_ALLERR;
1445
1446                         for (j = 1 ; j < ctxbi->nr_desc ; ++j) {
1447                                 ttxbi = txbi + ((i + j) & (mask));
1448                                 txdesc[(i + j) & (mask)].dw[0] = 0;
1449
1450                                 dma_unmap_page(&jme->pdev->dev,
1451                                                ttxbi->mapping, ttxbi->len,
1452                                                DMA_TO_DEVICE);
1453
1454                                 ttxbi->mapping = 0;
1455                                 ttxbi->len = 0;
1456                         }
1457
1458                         dev_kfree_skb(ctxbi->skb);
1459
1460                         cnt += ctxbi->nr_desc;
1461
1462                         if (unlikely(err)) {
1463                                 ++(NET_STAT(jme).tx_carrier_errors);
1464                         } else {
1465                                 ++(NET_STAT(jme).tx_packets);
1466                                 NET_STAT(jme).tx_bytes += ctxbi->len;
1467                         }
1468
1469                         ctxbi->skb = NULL;
1470                         ctxbi->len = 0;
1471                         ctxbi->start_xmit = 0;
1472
1473                 } else {
1474                         break;
1475                 }
1476
1477                 i = (i + ctxbi->nr_desc) & mask;
1478
1479                 ctxbi->nr_desc = 0;
1480         }
1481
1482         tx_dbg(jme, "txclean: done %d@%lu\n", i, jiffies);
1483         atomic_set(&txring->next_to_clean, i);
1484         atomic_add(cnt, &txring->nr_free);
1485
1486         jme_wake_queue_if_stopped(jme);
1487
1488 out:
1489         atomic_inc(&jme->tx_cleaning);
1490 }
1491
1492 static void
1493 jme_intr_msi(struct jme_adapter *jme, u32 intrstat)
1494 {
1495         /*
1496          * Disable interrupt
1497          */
1498         jwrite32f(jme, JME_IENC, INTR_ENABLE);
1499
1500         if (intrstat & (INTR_LINKCH | INTR_SWINTR)) {
1501                 /*
1502                  * Link change event is critical
1503                  * all other events are ignored
1504                  */
1505                 jwrite32(jme, JME_IEVE, intrstat);
1506                 schedule_work(&jme->linkch_task);
1507                 goto out_reenable;
1508         }
1509
1510         if (intrstat & INTR_TMINTR) {
1511                 jwrite32(jme, JME_IEVE, INTR_TMINTR);
1512                 tasklet_schedule(&jme->pcc_task);
1513         }
1514
1515         if (intrstat & (INTR_PCCTXTO | INTR_PCCTX)) {
1516                 jwrite32(jme, JME_IEVE, INTR_PCCTXTO | INTR_PCCTX | INTR_TX0);
1517                 tasklet_schedule(&jme->txclean_task);
1518         }
1519
1520         if ((intrstat & (INTR_PCCRX0TO | INTR_PCCRX0 | INTR_RX0EMP))) {
1521                 jwrite32(jme, JME_IEVE, (intrstat & (INTR_PCCRX0TO |
1522                                                      INTR_PCCRX0 |
1523                                                      INTR_RX0EMP)) |
1524                                         INTR_RX0);
1525         }
1526
1527         if (test_bit(JME_FLAG_POLL, &jme->flags)) {
1528                 if (intrstat & INTR_RX0EMP)
1529                         atomic_inc(&jme->rx_empty);
1530
1531                 if ((intrstat & (INTR_PCCRX0TO | INTR_PCCRX0 | INTR_RX0EMP))) {
1532                         if (likely(JME_RX_SCHEDULE_PREP(jme))) {
1533                                 jme_polling_mode(jme);
1534                                 JME_RX_SCHEDULE(jme);
1535                         }
1536                 }
1537         } else {
1538                 if (intrstat & INTR_RX0EMP) {
1539                         atomic_inc(&jme->rx_empty);
1540                         tasklet_hi_schedule(&jme->rxempty_task);
1541                 } else if (intrstat & (INTR_PCCRX0TO | INTR_PCCRX0)) {
1542                         tasklet_hi_schedule(&jme->rxclean_task);
1543                 }
1544         }
1545
1546 out_reenable:
1547         /*
1548          * Re-enable interrupt
1549          */
1550         jwrite32f(jme, JME_IENS, INTR_ENABLE);
1551 }
1552
1553 static irqreturn_t
1554 jme_intr(int irq, void *dev_id)
1555 {
1556         struct net_device *netdev = dev_id;
1557         struct jme_adapter *jme = netdev_priv(netdev);
1558         u32 intrstat;
1559
1560         intrstat = jread32(jme, JME_IEVE);
1561
1562         /*
1563          * Check if it's really an interrupt for us
1564          */
1565         if (unlikely((intrstat & INTR_ENABLE) == 0))
1566                 return IRQ_NONE;
1567
1568         /*
1569          * Check if the device still exist
1570          */
1571         if (unlikely(intrstat == ~((typeof(intrstat))0)))
1572                 return IRQ_NONE;
1573
1574         jme_intr_msi(jme, intrstat);
1575
1576         return IRQ_HANDLED;
1577 }
1578
1579 static irqreturn_t
1580 jme_msi(int irq, void *dev_id)
1581 {
1582         struct net_device *netdev = dev_id;
1583         struct jme_adapter *jme = netdev_priv(netdev);
1584         u32 intrstat;
1585
1586         intrstat = jread32(jme, JME_IEVE);
1587
1588         jme_intr_msi(jme, intrstat);
1589
1590         return IRQ_HANDLED;
1591 }
1592
1593 static void
1594 jme_reset_link(struct jme_adapter *jme)
1595 {
1596         jwrite32(jme, JME_TMCSR, TMCSR_SWIT);
1597 }
1598
1599 static void
1600 jme_restart_an(struct jme_adapter *jme)
1601 {
1602         u32 bmcr;
1603
1604         spin_lock_bh(&jme->phy_lock);
1605         bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
1606         bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
1607         jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, bmcr);
1608         spin_unlock_bh(&jme->phy_lock);
1609 }
1610
1611 static int
1612 jme_request_irq(struct jme_adapter *jme)
1613 {
1614         int rc;
1615         struct net_device *netdev = jme->dev;
1616         irq_handler_t handler = jme_intr;
1617         int irq_flags = IRQF_SHARED;
1618
1619         if (!pci_enable_msi(jme->pdev)) {
1620                 set_bit(JME_FLAG_MSI, &jme->flags);
1621                 handler = jme_msi;
1622                 irq_flags = 0;
1623         }
1624
1625         rc = request_irq(jme->pdev->irq, handler, irq_flags, netdev->name,
1626                           netdev);
1627         if (rc) {
1628                 netdev_err(netdev,
1629                            "Unable to request %s interrupt (return: %d)\n",
1630                            test_bit(JME_FLAG_MSI, &jme->flags) ? "MSI" : "INTx",
1631                            rc);
1632
1633                 if (test_bit(JME_FLAG_MSI, &jme->flags)) {
1634                         pci_disable_msi(jme->pdev);
1635                         clear_bit(JME_FLAG_MSI, &jme->flags);
1636                 }
1637         } else {
1638                 netdev->irq = jme->pdev->irq;
1639         }
1640
1641         return rc;
1642 }
1643
1644 static void
1645 jme_free_irq(struct jme_adapter *jme)
1646 {
1647         free_irq(jme->pdev->irq, jme->dev);
1648         if (test_bit(JME_FLAG_MSI, &jme->flags)) {
1649                 pci_disable_msi(jme->pdev);
1650                 clear_bit(JME_FLAG_MSI, &jme->flags);
1651                 jme->dev->irq = jme->pdev->irq;
1652         }
1653 }
1654
1655 static inline void
1656 jme_new_phy_on(struct jme_adapter *jme)
1657 {
1658         u32 reg;
1659
1660         reg = jread32(jme, JME_PHY_PWR);
1661         reg &= ~(PHY_PWR_DWN1SEL | PHY_PWR_DWN1SW |
1662                  PHY_PWR_DWN2 | PHY_PWR_CLKSEL);
1663         jwrite32(jme, JME_PHY_PWR, reg);
1664
1665         pci_read_config_dword(jme->pdev, PCI_PRIV_PE1, &reg);
1666         reg &= ~PE1_GPREG0_PBG;
1667         reg |= PE1_GPREG0_ENBG;
1668         pci_write_config_dword(jme->pdev, PCI_PRIV_PE1, reg);
1669 }
1670
1671 static inline void
1672 jme_new_phy_off(struct jme_adapter *jme)
1673 {
1674         u32 reg;
1675
1676         reg = jread32(jme, JME_PHY_PWR);
1677         reg |= PHY_PWR_DWN1SEL | PHY_PWR_DWN1SW |
1678                PHY_PWR_DWN2 | PHY_PWR_CLKSEL;
1679         jwrite32(jme, JME_PHY_PWR, reg);
1680
1681         pci_read_config_dword(jme->pdev, PCI_PRIV_PE1, &reg);
1682         reg &= ~PE1_GPREG0_PBG;
1683         reg |= PE1_GPREG0_PDD3COLD;
1684         pci_write_config_dword(jme->pdev, PCI_PRIV_PE1, reg);
1685 }
1686
1687 static inline void
1688 jme_phy_on(struct jme_adapter *jme)
1689 {
1690         u32 bmcr;
1691
1692         bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
1693         bmcr &= ~BMCR_PDOWN;
1694         jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, bmcr);
1695
1696         if (new_phy_power_ctrl(jme->chip_main_rev))
1697                 jme_new_phy_on(jme);
1698 }
1699
1700 static inline void
1701 jme_phy_off(struct jme_adapter *jme)
1702 {
1703         u32 bmcr;
1704
1705         bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
1706         bmcr |= BMCR_PDOWN;
1707         jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, bmcr);
1708
1709         if (new_phy_power_ctrl(jme->chip_main_rev))
1710                 jme_new_phy_off(jme);
1711 }
1712
1713 static int
1714 jme_phy_specreg_read(struct jme_adapter *jme, u32 specreg)
1715 {
1716         u32 phy_addr;
1717
1718         phy_addr = JM_PHY_SPEC_REG_READ | specreg;
1719         jme_mdio_write(jme->dev, jme->mii_if.phy_id, JM_PHY_SPEC_ADDR_REG,
1720                         phy_addr);
1721         return jme_mdio_read(jme->dev, jme->mii_if.phy_id,
1722                         JM_PHY_SPEC_DATA_REG);
1723 }
1724
1725 static void
1726 jme_phy_specreg_write(struct jme_adapter *jme, u32 ext_reg, u32 phy_data)
1727 {
1728         u32 phy_addr;
1729
1730         phy_addr = JM_PHY_SPEC_REG_WRITE | ext_reg;
1731         jme_mdio_write(jme->dev, jme->mii_if.phy_id, JM_PHY_SPEC_DATA_REG,
1732                         phy_data);
1733         jme_mdio_write(jme->dev, jme->mii_if.phy_id, JM_PHY_SPEC_ADDR_REG,
1734                         phy_addr);
1735 }
1736
1737 static int
1738 jme_phy_calibration(struct jme_adapter *jme)
1739 {
1740         u32 ctrl1000, phy_data;
1741
1742         jme_phy_off(jme);
1743         jme_phy_on(jme);
1744         /*  Enabel PHY test mode 1 */
1745         ctrl1000 = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_CTRL1000);
1746         ctrl1000 &= ~PHY_GAD_TEST_MODE_MSK;
1747         ctrl1000 |= PHY_GAD_TEST_MODE_1;
1748         jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_CTRL1000, ctrl1000);
1749
1750         phy_data = jme_phy_specreg_read(jme, JM_PHY_EXT_COMM_2_REG);
1751         phy_data &= ~JM_PHY_EXT_COMM_2_CALI_MODE_0;
1752         phy_data |= JM_PHY_EXT_COMM_2_CALI_LATCH |
1753                         JM_PHY_EXT_COMM_2_CALI_ENABLE;
1754         jme_phy_specreg_write(jme, JM_PHY_EXT_COMM_2_REG, phy_data);
1755         msleep(20);
1756         phy_data = jme_phy_specreg_read(jme, JM_PHY_EXT_COMM_2_REG);
1757         phy_data &= ~(JM_PHY_EXT_COMM_2_CALI_ENABLE |
1758                         JM_PHY_EXT_COMM_2_CALI_MODE_0 |
1759                         JM_PHY_EXT_COMM_2_CALI_LATCH);
1760         jme_phy_specreg_write(jme, JM_PHY_EXT_COMM_2_REG, phy_data);
1761
1762         /*  Disable PHY test mode */
1763         ctrl1000 = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_CTRL1000);
1764         ctrl1000 &= ~PHY_GAD_TEST_MODE_MSK;
1765         jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_CTRL1000, ctrl1000);
1766         return 0;
1767 }
1768
1769 static int
1770 jme_phy_setEA(struct jme_adapter *jme)
1771 {
1772         u32 phy_comm0 = 0, phy_comm1 = 0;
1773         u8 nic_ctrl;
1774
1775         pci_read_config_byte(jme->pdev, PCI_PRIV_SHARE_NICCTRL, &nic_ctrl);
1776         if ((nic_ctrl & 0x3) == JME_FLAG_PHYEA_ENABLE)
1777                 return 0;
1778
1779         switch (jme->pdev->device) {
1780         case PCI_DEVICE_ID_JMICRON_JMC250:
1781                 if (((jme->chip_main_rev == 5) &&
1782                         ((jme->chip_sub_rev == 0) || (jme->chip_sub_rev == 1) ||
1783                         (jme->chip_sub_rev == 3))) ||
1784                         (jme->chip_main_rev >= 6)) {
1785                         phy_comm0 = 0x008A;
1786                         phy_comm1 = 0x4109;
1787                 }
1788                 if ((jme->chip_main_rev == 3) &&
1789                         ((jme->chip_sub_rev == 1) || (jme->chip_sub_rev == 2)))
1790                         phy_comm0 = 0xE088;
1791                 break;
1792         case PCI_DEVICE_ID_JMICRON_JMC260:
1793                 if (((jme->chip_main_rev == 5) &&
1794                         ((jme->chip_sub_rev == 0) || (jme->chip_sub_rev == 1) ||
1795                         (jme->chip_sub_rev == 3))) ||
1796                         (jme->chip_main_rev >= 6)) {
1797                         phy_comm0 = 0x008A;
1798                         phy_comm1 = 0x4109;
1799                 }
1800                 if ((jme->chip_main_rev == 3) &&
1801                         ((jme->chip_sub_rev == 1) || (jme->chip_sub_rev == 2)))
1802                         phy_comm0 = 0xE088;
1803                 if ((jme->chip_main_rev == 2) && (jme->chip_sub_rev == 0))
1804                         phy_comm0 = 0x608A;
1805                 if ((jme->chip_main_rev == 2) && (jme->chip_sub_rev == 2))
1806                         phy_comm0 = 0x408A;
1807                 break;
1808         default:
1809                 return -ENODEV;
1810         }
1811         if (phy_comm0)
1812                 jme_phy_specreg_write(jme, JM_PHY_EXT_COMM_0_REG, phy_comm0);
1813         if (phy_comm1)
1814                 jme_phy_specreg_write(jme, JM_PHY_EXT_COMM_1_REG, phy_comm1);
1815
1816         return 0;
1817 }
1818
1819 static int
1820 jme_open(struct net_device *netdev)
1821 {
1822         struct jme_adapter *jme = netdev_priv(netdev);
1823         int rc;
1824
1825         jme_clear_pm_disable_wol(jme);
1826         JME_NAPI_ENABLE(jme);
1827
1828         tasklet_setup(&jme->txclean_task, jme_tx_clean_tasklet);
1829         tasklet_setup(&jme->rxclean_task, jme_rx_clean_tasklet);
1830         tasklet_setup(&jme->rxempty_task, jme_rx_empty_tasklet);
1831
1832         rc = jme_request_irq(jme);
1833         if (rc)
1834                 goto err_out;
1835
1836         jme_start_irq(jme);
1837
1838         jme_phy_on(jme);
1839         if (test_bit(JME_FLAG_SSET, &jme->flags))
1840                 jme_set_link_ksettings(netdev, &jme->old_cmd);
1841         else
1842                 jme_reset_phy_processor(jme);
1843         jme_phy_calibration(jme);
1844         jme_phy_setEA(jme);
1845         jme_reset_link(jme);
1846
1847         return 0;
1848
1849 err_out:
1850         netif_stop_queue(netdev);
1851         netif_carrier_off(netdev);
1852         return rc;
1853 }
1854
1855 static void
1856 jme_set_100m_half(struct jme_adapter *jme)
1857 {
1858         u32 bmcr, tmp;
1859
1860         jme_phy_on(jme);
1861         bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
1862         tmp = bmcr & ~(BMCR_ANENABLE | BMCR_SPEED100 |
1863                        BMCR_SPEED1000 | BMCR_FULLDPLX);
1864         tmp |= BMCR_SPEED100;
1865
1866         if (bmcr != tmp)
1867                 jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, tmp);
1868
1869         if (jme->fpgaver)
1870                 jwrite32(jme, JME_GHC, GHC_SPEED_100M | GHC_LINK_POLL);
1871         else
1872                 jwrite32(jme, JME_GHC, GHC_SPEED_100M);
1873 }
1874
1875 #define JME_WAIT_LINK_TIME 2000 /* 2000ms */
1876 static void
1877 jme_wait_link(struct jme_adapter *jme)
1878 {
1879         u32 phylink, to = JME_WAIT_LINK_TIME;
1880
1881         msleep(1000);
1882         phylink = jme_linkstat_from_phy(jme);
1883         while (!(phylink & PHY_LINK_UP) && (to -= 10) > 0) {
1884                 usleep_range(10000, 11000);
1885                 phylink = jme_linkstat_from_phy(jme);
1886         }
1887 }
1888
1889 static void
1890 jme_powersave_phy(struct jme_adapter *jme)
1891 {
1892         if (jme->reg_pmcs && device_may_wakeup(&jme->pdev->dev)) {
1893                 jme_set_100m_half(jme);
1894                 if (jme->reg_pmcs & (PMCS_LFEN | PMCS_LREN))
1895                         jme_wait_link(jme);
1896                 jme_clear_pm_enable_wol(jme);
1897         } else {
1898                 jme_phy_off(jme);
1899         }
1900 }
1901
1902 static int
1903 jme_close(struct net_device *netdev)
1904 {
1905         struct jme_adapter *jme = netdev_priv(netdev);
1906
1907         netif_stop_queue(netdev);
1908         netif_carrier_off(netdev);
1909
1910         jme_stop_irq(jme);
1911         jme_free_irq(jme);
1912
1913         JME_NAPI_DISABLE(jme);
1914
1915         cancel_work_sync(&jme->linkch_task);
1916         tasklet_kill(&jme->txclean_task);
1917         tasklet_kill(&jme->rxclean_task);
1918         tasklet_kill(&jme->rxempty_task);
1919
1920         jme_disable_rx_engine(jme);
1921         jme_disable_tx_engine(jme);
1922         jme_reset_mac_processor(jme);
1923         jme_free_rx_resources(jme);
1924         jme_free_tx_resources(jme);
1925         jme->phylink = 0;
1926         jme_phy_off(jme);
1927
1928         return 0;
1929 }
1930
1931 static int
1932 jme_alloc_txdesc(struct jme_adapter *jme,
1933                         struct sk_buff *skb)
1934 {
1935         struct jme_ring *txring = &(jme->txring[0]);
1936         int idx, nr_alloc, mask = jme->tx_ring_mask;
1937
1938         idx = txring->next_to_use;
1939         nr_alloc = skb_shinfo(skb)->nr_frags + 2;
1940
1941         if (unlikely(atomic_read(&txring->nr_free) < nr_alloc))
1942                 return -1;
1943
1944         atomic_sub(nr_alloc, &txring->nr_free);
1945
1946         txring->next_to_use = (txring->next_to_use + nr_alloc) & mask;
1947
1948         return idx;
1949 }
1950
1951 static int
1952 jme_fill_tx_map(struct pci_dev *pdev,
1953                 struct txdesc *txdesc,
1954                 struct jme_buffer_info *txbi,
1955                 struct page *page,
1956                 u32 page_offset,
1957                 u32 len,
1958                 bool hidma)
1959 {
1960         dma_addr_t dmaaddr;
1961
1962         dmaaddr = dma_map_page(&pdev->dev, page, page_offset, len,
1963                                DMA_TO_DEVICE);
1964
1965         if (unlikely(dma_mapping_error(&pdev->dev, dmaaddr)))
1966                 return -EINVAL;
1967
1968         dma_sync_single_for_device(&pdev->dev, dmaaddr, len, DMA_TO_DEVICE);
1969
1970         txdesc->dw[0] = 0;
1971         txdesc->dw[1] = 0;
1972         txdesc->desc2.flags     = TXFLAG_OWN;
1973         txdesc->desc2.flags     |= (hidma) ? TXFLAG_64BIT : 0;
1974         txdesc->desc2.datalen   = cpu_to_le16(len);
1975         txdesc->desc2.bufaddrh  = cpu_to_le32((__u64)dmaaddr >> 32);
1976         txdesc->desc2.bufaddrl  = cpu_to_le32(
1977                                         (__u64)dmaaddr & 0xFFFFFFFFUL);
1978
1979         txbi->mapping = dmaaddr;
1980         txbi->len = len;
1981         return 0;
1982 }
1983
1984 static void jme_drop_tx_map(struct jme_adapter *jme, int startidx, int count)
1985 {
1986         struct jme_ring *txring = &(jme->txring[0]);
1987         struct jme_buffer_info *txbi = txring->bufinf, *ctxbi;
1988         int mask = jme->tx_ring_mask;
1989         int j;
1990
1991         for (j = 0 ; j < count ; j++) {
1992                 ctxbi = txbi + ((startidx + j + 2) & (mask));
1993                 dma_unmap_page(&jme->pdev->dev, ctxbi->mapping, ctxbi->len,
1994                                DMA_TO_DEVICE);
1995
1996                 ctxbi->mapping = 0;
1997                 ctxbi->len = 0;
1998         }
1999 }
2000
2001 static int
2002 jme_map_tx_skb(struct jme_adapter *jme, struct sk_buff *skb, int idx)
2003 {
2004         struct jme_ring *txring = &(jme->txring[0]);
2005         struct txdesc *txdesc = txring->desc, *ctxdesc;
2006         struct jme_buffer_info *txbi = txring->bufinf, *ctxbi;
2007         bool hidma = jme->dev->features & NETIF_F_HIGHDMA;
2008         int i, nr_frags = skb_shinfo(skb)->nr_frags;
2009         int mask = jme->tx_ring_mask;
2010         u32 len;
2011         int ret = 0;
2012
2013         for (i = 0 ; i < nr_frags ; ++i) {
2014                 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
2015
2016                 ctxdesc = txdesc + ((idx + i + 2) & (mask));
2017                 ctxbi = txbi + ((idx + i + 2) & (mask));
2018
2019                 ret = jme_fill_tx_map(jme->pdev, ctxdesc, ctxbi,
2020                                       skb_frag_page(frag), skb_frag_off(frag),
2021                                       skb_frag_size(frag), hidma);
2022                 if (ret) {
2023                         jme_drop_tx_map(jme, idx, i);
2024                         goto out;
2025                 }
2026         }
2027
2028         len = skb_is_nonlinear(skb) ? skb_headlen(skb) : skb->len;
2029         ctxdesc = txdesc + ((idx + 1) & (mask));
2030         ctxbi = txbi + ((idx + 1) & (mask));
2031         ret = jme_fill_tx_map(jme->pdev, ctxdesc, ctxbi, virt_to_page(skb->data),
2032                         offset_in_page(skb->data), len, hidma);
2033         if (ret)
2034                 jme_drop_tx_map(jme, idx, i);
2035
2036 out:
2037         return ret;
2038
2039 }
2040
2041
2042 static int
2043 jme_tx_tso(struct sk_buff *skb, __le16 *mss, u8 *flags)
2044 {
2045         *mss = cpu_to_le16(skb_shinfo(skb)->gso_size << TXDESC_MSS_SHIFT);
2046         if (*mss) {
2047                 *flags |= TXFLAG_LSEN;
2048
2049                 if (skb->protocol == htons(ETH_P_IP)) {
2050                         struct iphdr *iph = ip_hdr(skb);
2051
2052                         iph->check = 0;
2053                         tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
2054                                                                 iph->daddr, 0,
2055                                                                 IPPROTO_TCP,
2056                                                                 0);
2057                 } else {
2058                         tcp_v6_gso_csum_prep(skb);
2059                 }
2060
2061                 return 0;
2062         }
2063
2064         return 1;
2065 }
2066
2067 static void
2068 jme_tx_csum(struct jme_adapter *jme, struct sk_buff *skb, u8 *flags)
2069 {
2070         if (skb->ip_summed == CHECKSUM_PARTIAL) {
2071                 u8 ip_proto;
2072
2073                 switch (skb->protocol) {
2074                 case htons(ETH_P_IP):
2075                         ip_proto = ip_hdr(skb)->protocol;
2076                         break;
2077                 case htons(ETH_P_IPV6):
2078                         ip_proto = ipv6_hdr(skb)->nexthdr;
2079                         break;
2080                 default:
2081                         ip_proto = 0;
2082                         break;
2083                 }
2084
2085                 switch (ip_proto) {
2086                 case IPPROTO_TCP:
2087                         *flags |= TXFLAG_TCPCS;
2088                         break;
2089                 case IPPROTO_UDP:
2090                         *flags |= TXFLAG_UDPCS;
2091                         break;
2092                 default:
2093                         netif_err(jme, tx_err, jme->dev, "Error upper layer protocol\n");
2094                         break;
2095                 }
2096         }
2097 }
2098
2099 static inline void
2100 jme_tx_vlan(struct sk_buff *skb, __le16 *vlan, u8 *flags)
2101 {
2102         if (skb_vlan_tag_present(skb)) {
2103                 *flags |= TXFLAG_TAGON;
2104                 *vlan = cpu_to_le16(skb_vlan_tag_get(skb));
2105         }
2106 }
2107
2108 static int
2109 jme_fill_tx_desc(struct jme_adapter *jme, struct sk_buff *skb, int idx)
2110 {
2111         struct jme_ring *txring = &(jme->txring[0]);
2112         struct txdesc *txdesc;
2113         struct jme_buffer_info *txbi;
2114         u8 flags;
2115         int ret = 0;
2116
2117         txdesc = (struct txdesc *)txring->desc + idx;
2118         txbi = txring->bufinf + idx;
2119
2120         txdesc->dw[0] = 0;
2121         txdesc->dw[1] = 0;
2122         txdesc->dw[2] = 0;
2123         txdesc->dw[3] = 0;
2124         txdesc->desc1.pktsize = cpu_to_le16(skb->len);
2125         /*
2126          * Set OWN bit at final.
2127          * When kernel transmit faster than NIC.
2128          * And NIC trying to send this descriptor before we tell
2129          * it to start sending this TX queue.
2130          * Other fields are already filled correctly.
2131          */
2132         wmb();
2133         flags = TXFLAG_OWN | TXFLAG_INT;
2134         /*
2135          * Set checksum flags while not tso
2136          */
2137         if (jme_tx_tso(skb, &txdesc->desc1.mss, &flags))
2138                 jme_tx_csum(jme, skb, &flags);
2139         jme_tx_vlan(skb, &txdesc->desc1.vlan, &flags);
2140         ret = jme_map_tx_skb(jme, skb, idx);
2141         if (ret)
2142                 return ret;
2143
2144         txdesc->desc1.flags = flags;
2145         /*
2146          * Set tx buffer info after telling NIC to send
2147          * For better tx_clean timing
2148          */
2149         wmb();
2150         txbi->nr_desc = skb_shinfo(skb)->nr_frags + 2;
2151         txbi->skb = skb;
2152         txbi->len = skb->len;
2153         txbi->start_xmit = jiffies;
2154         if (!txbi->start_xmit)
2155                 txbi->start_xmit = (0UL-1);
2156
2157         return 0;
2158 }
2159
2160 static void
2161 jme_stop_queue_if_full(struct jme_adapter *jme)
2162 {
2163         struct jme_ring *txring = &(jme->txring[0]);
2164         struct jme_buffer_info *txbi = txring->bufinf;
2165         int idx = atomic_read(&txring->next_to_clean);
2166
2167         txbi += idx;
2168
2169         smp_wmb();
2170         if (unlikely(atomic_read(&txring->nr_free) < (MAX_SKB_FRAGS+2))) {
2171                 netif_stop_queue(jme->dev);
2172                 netif_info(jme, tx_queued, jme->dev, "TX Queue Paused\n");
2173                 smp_wmb();
2174                 if (atomic_read(&txring->nr_free)
2175                         >= (jme->tx_wake_threshold)) {
2176                         netif_wake_queue(jme->dev);
2177                         netif_info(jme, tx_queued, jme->dev, "TX Queue Fast Waked\n");
2178                 }
2179         }
2180
2181         if (unlikely(txbi->start_xmit &&
2182                         (jiffies - txbi->start_xmit) >= TX_TIMEOUT &&
2183                         txbi->skb)) {
2184                 netif_stop_queue(jme->dev);
2185                 netif_info(jme, tx_queued, jme->dev,
2186                            "TX Queue Stopped %d@%lu\n", idx, jiffies);
2187         }
2188 }
2189
2190 /*
2191  * This function is already protected by netif_tx_lock()
2192  */
2193
2194 static netdev_tx_t
2195 jme_start_xmit(struct sk_buff *skb, struct net_device *netdev)
2196 {
2197         struct jme_adapter *jme = netdev_priv(netdev);
2198         int idx;
2199
2200         if (unlikely(skb_is_gso(skb) && skb_cow_head(skb, 0))) {
2201                 dev_kfree_skb_any(skb);
2202                 ++(NET_STAT(jme).tx_dropped);
2203                 return NETDEV_TX_OK;
2204         }
2205
2206         idx = jme_alloc_txdesc(jme, skb);
2207
2208         if (unlikely(idx < 0)) {
2209                 netif_stop_queue(netdev);
2210                 netif_err(jme, tx_err, jme->dev,
2211                           "BUG! Tx ring full when queue awake!\n");
2212
2213                 return NETDEV_TX_BUSY;
2214         }
2215
2216         if (jme_fill_tx_desc(jme, skb, idx))
2217                 return NETDEV_TX_OK;
2218
2219         jwrite32(jme, JME_TXCS, jme->reg_txcs |
2220                                 TXCS_SELECT_QUEUE0 |
2221                                 TXCS_QUEUE0S |
2222                                 TXCS_ENABLE);
2223
2224         tx_dbg(jme, "xmit: %d+%d@%lu\n",
2225                idx, skb_shinfo(skb)->nr_frags + 2, jiffies);
2226         jme_stop_queue_if_full(jme);
2227
2228         return NETDEV_TX_OK;
2229 }
2230
2231 static void
2232 jme_set_unicastaddr(struct net_device *netdev)
2233 {
2234         struct jme_adapter *jme = netdev_priv(netdev);
2235         u32 val;
2236
2237         val = (netdev->dev_addr[3] & 0xff) << 24 |
2238               (netdev->dev_addr[2] & 0xff) << 16 |
2239               (netdev->dev_addr[1] & 0xff) <<  8 |
2240               (netdev->dev_addr[0] & 0xff);
2241         jwrite32(jme, JME_RXUMA_LO, val);
2242         val = (netdev->dev_addr[5] & 0xff) << 8 |
2243               (netdev->dev_addr[4] & 0xff);
2244         jwrite32(jme, JME_RXUMA_HI, val);
2245 }
2246
2247 static int
2248 jme_set_macaddr(struct net_device *netdev, void *p)
2249 {
2250         struct jme_adapter *jme = netdev_priv(netdev);
2251         struct sockaddr *addr = p;
2252
2253         if (netif_running(netdev))
2254                 return -EBUSY;
2255
2256         spin_lock_bh(&jme->macaddr_lock);
2257         memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
2258         jme_set_unicastaddr(netdev);
2259         spin_unlock_bh(&jme->macaddr_lock);
2260
2261         return 0;
2262 }
2263
2264 static void
2265 jme_set_multi(struct net_device *netdev)
2266 {
2267         struct jme_adapter *jme = netdev_priv(netdev);
2268         u32 mc_hash[2] = {};
2269
2270         spin_lock_bh(&jme->rxmcs_lock);
2271
2272         jme->reg_rxmcs |= RXMCS_BRDFRAME | RXMCS_UNIFRAME;
2273
2274         if (netdev->flags & IFF_PROMISC) {
2275                 jme->reg_rxmcs |= RXMCS_ALLFRAME;
2276         } else if (netdev->flags & IFF_ALLMULTI) {
2277                 jme->reg_rxmcs |= RXMCS_ALLMULFRAME;
2278         } else if (netdev->flags & IFF_MULTICAST) {
2279                 struct netdev_hw_addr *ha;
2280                 int bit_nr;
2281
2282                 jme->reg_rxmcs |= RXMCS_MULFRAME | RXMCS_MULFILTERED;
2283                 netdev_for_each_mc_addr(ha, netdev) {
2284                         bit_nr = ether_crc(ETH_ALEN, ha->addr) & 0x3F;
2285                         mc_hash[bit_nr >> 5] |= 1 << (bit_nr & 0x1F);
2286                 }
2287
2288                 jwrite32(jme, JME_RXMCHT_LO, mc_hash[0]);
2289                 jwrite32(jme, JME_RXMCHT_HI, mc_hash[1]);
2290         }
2291
2292         wmb();
2293         jwrite32(jme, JME_RXMCS, jme->reg_rxmcs);
2294
2295         spin_unlock_bh(&jme->rxmcs_lock);
2296 }
2297
2298 static int
2299 jme_change_mtu(struct net_device *netdev, int new_mtu)
2300 {
2301         struct jme_adapter *jme = netdev_priv(netdev);
2302
2303         netdev->mtu = new_mtu;
2304         netdev_update_features(netdev);
2305
2306         jme_restart_rx_engine(jme);
2307         jme_reset_link(jme);
2308
2309         return 0;
2310 }
2311
2312 static void
2313 jme_tx_timeout(struct net_device *netdev, unsigned int txqueue)
2314 {
2315         struct jme_adapter *jme = netdev_priv(netdev);
2316
2317         jme->phylink = 0;
2318         jme_reset_phy_processor(jme);
2319         if (test_bit(JME_FLAG_SSET, &jme->flags))
2320                 jme_set_link_ksettings(netdev, &jme->old_cmd);
2321
2322         /*
2323          * Force to Reset the link again
2324          */
2325         jme_reset_link(jme);
2326 }
2327
2328 static void
2329 jme_get_drvinfo(struct net_device *netdev,
2330                      struct ethtool_drvinfo *info)
2331 {
2332         struct jme_adapter *jme = netdev_priv(netdev);
2333
2334         strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
2335         strlcpy(info->version, DRV_VERSION, sizeof(info->version));
2336         strlcpy(info->bus_info, pci_name(jme->pdev), sizeof(info->bus_info));
2337 }
2338
2339 static int
2340 jme_get_regs_len(struct net_device *netdev)
2341 {
2342         return JME_REG_LEN;
2343 }
2344
2345 static void
2346 mmapio_memcpy(struct jme_adapter *jme, u32 *p, u32 reg, int len)
2347 {
2348         int i;
2349
2350         for (i = 0 ; i < len ; i += 4)
2351                 p[i >> 2] = jread32(jme, reg + i);
2352 }
2353
2354 static void
2355 mdio_memcpy(struct jme_adapter *jme, u32 *p, int reg_nr)
2356 {
2357         int i;
2358         u16 *p16 = (u16 *)p;
2359
2360         for (i = 0 ; i < reg_nr ; ++i)
2361                 p16[i] = jme_mdio_read(jme->dev, jme->mii_if.phy_id, i);
2362 }
2363
2364 static void
2365 jme_get_regs(struct net_device *netdev, struct ethtool_regs *regs, void *p)
2366 {
2367         struct jme_adapter *jme = netdev_priv(netdev);
2368         u32 *p32 = (u32 *)p;
2369
2370         memset(p, 0xFF, JME_REG_LEN);
2371
2372         regs->version = 1;
2373         mmapio_memcpy(jme, p32, JME_MAC, JME_MAC_LEN);
2374
2375         p32 += 0x100 >> 2;
2376         mmapio_memcpy(jme, p32, JME_PHY, JME_PHY_LEN);
2377
2378         p32 += 0x100 >> 2;
2379         mmapio_memcpy(jme, p32, JME_MISC, JME_MISC_LEN);
2380
2381         p32 += 0x100 >> 2;
2382         mmapio_memcpy(jme, p32, JME_RSS, JME_RSS_LEN);
2383
2384         p32 += 0x100 >> 2;
2385         mdio_memcpy(jme, p32, JME_PHY_REG_NR);
2386 }
2387
2388 static int jme_get_coalesce(struct net_device *netdev,
2389                             struct ethtool_coalesce *ecmd,
2390                             struct kernel_ethtool_coalesce *kernel_coal,
2391                             struct netlink_ext_ack *extack)
2392 {
2393         struct jme_adapter *jme = netdev_priv(netdev);
2394
2395         ecmd->tx_coalesce_usecs = PCC_TX_TO;
2396         ecmd->tx_max_coalesced_frames = PCC_TX_CNT;
2397
2398         if (test_bit(JME_FLAG_POLL, &jme->flags)) {
2399                 ecmd->use_adaptive_rx_coalesce = false;
2400                 ecmd->rx_coalesce_usecs = 0;
2401                 ecmd->rx_max_coalesced_frames = 0;
2402                 return 0;
2403         }
2404
2405         ecmd->use_adaptive_rx_coalesce = true;
2406
2407         switch (jme->dpi.cur) {
2408         case PCC_P1:
2409                 ecmd->rx_coalesce_usecs = PCC_P1_TO;
2410                 ecmd->rx_max_coalesced_frames = PCC_P1_CNT;
2411                 break;
2412         case PCC_P2:
2413                 ecmd->rx_coalesce_usecs = PCC_P2_TO;
2414                 ecmd->rx_max_coalesced_frames = PCC_P2_CNT;
2415                 break;
2416         case PCC_P3:
2417                 ecmd->rx_coalesce_usecs = PCC_P3_TO;
2418                 ecmd->rx_max_coalesced_frames = PCC_P3_CNT;
2419                 break;
2420         default:
2421                 break;
2422         }
2423
2424         return 0;
2425 }
2426
2427 static int jme_set_coalesce(struct net_device *netdev,
2428                             struct ethtool_coalesce *ecmd,
2429                             struct kernel_ethtool_coalesce *kernel_coal,
2430                             struct netlink_ext_ack *extack)
2431 {
2432         struct jme_adapter *jme = netdev_priv(netdev);
2433         struct dynpcc_info *dpi = &(jme->dpi);
2434
2435         if (netif_running(netdev))
2436                 return -EBUSY;
2437
2438         if (ecmd->use_adaptive_rx_coalesce &&
2439             test_bit(JME_FLAG_POLL, &jme->flags)) {
2440                 clear_bit(JME_FLAG_POLL, &jme->flags);
2441                 jme->jme_rx = netif_rx;
2442                 dpi->cur                = PCC_P1;
2443                 dpi->attempt            = PCC_P1;
2444                 dpi->cnt                = 0;
2445                 jme_set_rx_pcc(jme, PCC_P1);
2446                 jme_interrupt_mode(jme);
2447         } else if (!(ecmd->use_adaptive_rx_coalesce) &&
2448                    !(test_bit(JME_FLAG_POLL, &jme->flags))) {
2449                 set_bit(JME_FLAG_POLL, &jme->flags);
2450                 jme->jme_rx = netif_receive_skb;
2451                 jme_interrupt_mode(jme);
2452         }
2453
2454         return 0;
2455 }
2456
2457 static void
2458 jme_get_pauseparam(struct net_device *netdev,
2459                         struct ethtool_pauseparam *ecmd)
2460 {
2461         struct jme_adapter *jme = netdev_priv(netdev);
2462         u32 val;
2463
2464         ecmd->tx_pause = (jme->reg_txpfc & TXPFC_PF_EN) != 0;
2465         ecmd->rx_pause = (jme->reg_rxmcs & RXMCS_FLOWCTRL) != 0;
2466
2467         spin_lock_bh(&jme->phy_lock);
2468         val = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_ADVERTISE);
2469         spin_unlock_bh(&jme->phy_lock);
2470
2471         ecmd->autoneg =
2472                 (val & (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM)) != 0;
2473 }
2474
2475 static int
2476 jme_set_pauseparam(struct net_device *netdev,
2477                         struct ethtool_pauseparam *ecmd)
2478 {
2479         struct jme_adapter *jme = netdev_priv(netdev);
2480         u32 val;
2481
2482         if (((jme->reg_txpfc & TXPFC_PF_EN) != 0) ^
2483                 (ecmd->tx_pause != 0)) {
2484
2485                 if (ecmd->tx_pause)
2486                         jme->reg_txpfc |= TXPFC_PF_EN;
2487                 else
2488                         jme->reg_txpfc &= ~TXPFC_PF_EN;
2489
2490                 jwrite32(jme, JME_TXPFC, jme->reg_txpfc);
2491         }
2492
2493         spin_lock_bh(&jme->rxmcs_lock);
2494         if (((jme->reg_rxmcs & RXMCS_FLOWCTRL) != 0) ^
2495                 (ecmd->rx_pause != 0)) {
2496
2497                 if (ecmd->rx_pause)
2498                         jme->reg_rxmcs |= RXMCS_FLOWCTRL;
2499                 else
2500                         jme->reg_rxmcs &= ~RXMCS_FLOWCTRL;
2501
2502                 jwrite32(jme, JME_RXMCS, jme->reg_rxmcs);
2503         }
2504         spin_unlock_bh(&jme->rxmcs_lock);
2505
2506         spin_lock_bh(&jme->phy_lock);
2507         val = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_ADVERTISE);
2508         if (((val & (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM)) != 0) ^
2509                 (ecmd->autoneg != 0)) {
2510
2511                 if (ecmd->autoneg)
2512                         val |= (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
2513                 else
2514                         val &= ~(ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
2515
2516                 jme_mdio_write(jme->dev, jme->mii_if.phy_id,
2517                                 MII_ADVERTISE, val);
2518         }
2519         spin_unlock_bh(&jme->phy_lock);
2520
2521         return 0;
2522 }
2523
2524 static void
2525 jme_get_wol(struct net_device *netdev,
2526                 struct ethtool_wolinfo *wol)
2527 {
2528         struct jme_adapter *jme = netdev_priv(netdev);
2529
2530         wol->supported = WAKE_MAGIC | WAKE_PHY;
2531
2532         wol->wolopts = 0;
2533
2534         if (jme->reg_pmcs & (PMCS_LFEN | PMCS_LREN))
2535                 wol->wolopts |= WAKE_PHY;
2536
2537         if (jme->reg_pmcs & PMCS_MFEN)
2538                 wol->wolopts |= WAKE_MAGIC;
2539
2540 }
2541
2542 static int
2543 jme_set_wol(struct net_device *netdev,
2544                 struct ethtool_wolinfo *wol)
2545 {
2546         struct jme_adapter *jme = netdev_priv(netdev);
2547
2548         if (wol->wolopts & (WAKE_MAGICSECURE |
2549                                 WAKE_UCAST |
2550                                 WAKE_MCAST |
2551                                 WAKE_BCAST |
2552                                 WAKE_ARP))
2553                 return -EOPNOTSUPP;
2554
2555         jme->reg_pmcs = 0;
2556
2557         if (wol->wolopts & WAKE_PHY)
2558                 jme->reg_pmcs |= PMCS_LFEN | PMCS_LREN;
2559
2560         if (wol->wolopts & WAKE_MAGIC)
2561                 jme->reg_pmcs |= PMCS_MFEN;
2562
2563         return 0;
2564 }
2565
2566 static int
2567 jme_get_link_ksettings(struct net_device *netdev,
2568                        struct ethtool_link_ksettings *cmd)
2569 {
2570         struct jme_adapter *jme = netdev_priv(netdev);
2571
2572         spin_lock_bh(&jme->phy_lock);
2573         mii_ethtool_get_link_ksettings(&jme->mii_if, cmd);
2574         spin_unlock_bh(&jme->phy_lock);
2575         return 0;
2576 }
2577
2578 static int
2579 jme_set_link_ksettings(struct net_device *netdev,
2580                        const struct ethtool_link_ksettings *cmd)
2581 {
2582         struct jme_adapter *jme = netdev_priv(netdev);
2583         int rc, fdc = 0;
2584
2585         if (cmd->base.speed == SPEED_1000 &&
2586             cmd->base.autoneg != AUTONEG_ENABLE)
2587                 return -EINVAL;
2588
2589         /*
2590          * Check If user changed duplex only while force_media.
2591          * Hardware would not generate link change interrupt.
2592          */
2593         if (jme->mii_if.force_media &&
2594             cmd->base.autoneg != AUTONEG_ENABLE &&
2595             (jme->mii_if.full_duplex != cmd->base.duplex))
2596                 fdc = 1;
2597
2598         spin_lock_bh(&jme->phy_lock);
2599         rc = mii_ethtool_set_link_ksettings(&jme->mii_if, cmd);
2600         spin_unlock_bh(&jme->phy_lock);
2601
2602         if (!rc) {
2603                 if (fdc)
2604                         jme_reset_link(jme);
2605                 jme->old_cmd = *cmd;
2606                 set_bit(JME_FLAG_SSET, &jme->flags);
2607         }
2608
2609         return rc;
2610 }
2611
2612 static int
2613 jme_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd)
2614 {
2615         int rc;
2616         struct jme_adapter *jme = netdev_priv(netdev);
2617         struct mii_ioctl_data *mii_data = if_mii(rq);
2618         unsigned int duplex_chg;
2619
2620         if (cmd == SIOCSMIIREG) {
2621                 u16 val = mii_data->val_in;
2622                 if (!(val & (BMCR_RESET|BMCR_ANENABLE)) &&
2623                     (val & BMCR_SPEED1000))
2624                         return -EINVAL;
2625         }
2626
2627         spin_lock_bh(&jme->phy_lock);
2628         rc = generic_mii_ioctl(&jme->mii_if, mii_data, cmd, &duplex_chg);
2629         spin_unlock_bh(&jme->phy_lock);
2630
2631         if (!rc && (cmd == SIOCSMIIREG)) {
2632                 if (duplex_chg)
2633                         jme_reset_link(jme);
2634                 jme_get_link_ksettings(netdev, &jme->old_cmd);
2635                 set_bit(JME_FLAG_SSET, &jme->flags);
2636         }
2637
2638         return rc;
2639 }
2640
2641 static u32
2642 jme_get_link(struct net_device *netdev)
2643 {
2644         struct jme_adapter *jme = netdev_priv(netdev);
2645         return jread32(jme, JME_PHY_LINK) & PHY_LINK_UP;
2646 }
2647
2648 static u32
2649 jme_get_msglevel(struct net_device *netdev)
2650 {
2651         struct jme_adapter *jme = netdev_priv(netdev);
2652         return jme->msg_enable;
2653 }
2654
2655 static void
2656 jme_set_msglevel(struct net_device *netdev, u32 value)
2657 {
2658         struct jme_adapter *jme = netdev_priv(netdev);
2659         jme->msg_enable = value;
2660 }
2661
2662 static netdev_features_t
2663 jme_fix_features(struct net_device *netdev, netdev_features_t features)
2664 {
2665         if (netdev->mtu > 1900)
2666                 features &= ~(NETIF_F_ALL_TSO | NETIF_F_CSUM_MASK);
2667         return features;
2668 }
2669
2670 static int
2671 jme_set_features(struct net_device *netdev, netdev_features_t features)
2672 {
2673         struct jme_adapter *jme = netdev_priv(netdev);
2674
2675         spin_lock_bh(&jme->rxmcs_lock);
2676         if (features & NETIF_F_RXCSUM)
2677                 jme->reg_rxmcs |= RXMCS_CHECKSUM;
2678         else
2679                 jme->reg_rxmcs &= ~RXMCS_CHECKSUM;
2680         jwrite32(jme, JME_RXMCS, jme->reg_rxmcs);
2681         spin_unlock_bh(&jme->rxmcs_lock);
2682
2683         return 0;
2684 }
2685
2686 #ifdef CONFIG_NET_POLL_CONTROLLER
2687 static void jme_netpoll(struct net_device *dev)
2688 {
2689         unsigned long flags;
2690
2691         local_irq_save(flags);
2692         jme_intr(dev->irq, dev);
2693         local_irq_restore(flags);
2694 }
2695 #endif
2696
2697 static int
2698 jme_nway_reset(struct net_device *netdev)
2699 {
2700         struct jme_adapter *jme = netdev_priv(netdev);
2701         jme_restart_an(jme);
2702         return 0;
2703 }
2704
2705 static u8
2706 jme_smb_read(struct jme_adapter *jme, unsigned int addr)
2707 {
2708         u32 val;
2709         int to;
2710
2711         val = jread32(jme, JME_SMBCSR);
2712         to = JME_SMB_BUSY_TIMEOUT;
2713         while ((val & SMBCSR_BUSY) && --to) {
2714                 msleep(1);
2715                 val = jread32(jme, JME_SMBCSR);
2716         }
2717         if (!to) {
2718                 netif_err(jme, hw, jme->dev, "SMB Bus Busy\n");
2719                 return 0xFF;
2720         }
2721
2722         jwrite32(jme, JME_SMBINTF,
2723                 ((addr << SMBINTF_HWADDR_SHIFT) & SMBINTF_HWADDR) |
2724                 SMBINTF_HWRWN_READ |
2725                 SMBINTF_HWCMD);
2726
2727         val = jread32(jme, JME_SMBINTF);
2728         to = JME_SMB_BUSY_TIMEOUT;
2729         while ((val & SMBINTF_HWCMD) && --to) {
2730                 msleep(1);
2731                 val = jread32(jme, JME_SMBINTF);
2732         }
2733         if (!to) {
2734                 netif_err(jme, hw, jme->dev, "SMB Bus Busy\n");
2735                 return 0xFF;
2736         }
2737
2738         return (val & SMBINTF_HWDATR) >> SMBINTF_HWDATR_SHIFT;
2739 }
2740
2741 static void
2742 jme_smb_write(struct jme_adapter *jme, unsigned int addr, u8 data)
2743 {
2744         u32 val;
2745         int to;
2746
2747         val = jread32(jme, JME_SMBCSR);
2748         to = JME_SMB_BUSY_TIMEOUT;
2749         while ((val & SMBCSR_BUSY) && --to) {
2750                 msleep(1);
2751                 val = jread32(jme, JME_SMBCSR);
2752         }
2753         if (!to) {
2754                 netif_err(jme, hw, jme->dev, "SMB Bus Busy\n");
2755                 return;
2756         }
2757
2758         jwrite32(jme, JME_SMBINTF,
2759                 ((data << SMBINTF_HWDATW_SHIFT) & SMBINTF_HWDATW) |
2760                 ((addr << SMBINTF_HWADDR_SHIFT) & SMBINTF_HWADDR) |
2761                 SMBINTF_HWRWN_WRITE |
2762                 SMBINTF_HWCMD);
2763
2764         val = jread32(jme, JME_SMBINTF);
2765         to = JME_SMB_BUSY_TIMEOUT;
2766         while ((val & SMBINTF_HWCMD) && --to) {
2767                 msleep(1);
2768                 val = jread32(jme, JME_SMBINTF);
2769         }
2770         if (!to) {
2771                 netif_err(jme, hw, jme->dev, "SMB Bus Busy\n");
2772                 return;
2773         }
2774
2775         mdelay(2);
2776 }
2777
2778 static int
2779 jme_get_eeprom_len(struct net_device *netdev)
2780 {
2781         struct jme_adapter *jme = netdev_priv(netdev);
2782         u32 val;
2783         val = jread32(jme, JME_SMBCSR);
2784         return (val & SMBCSR_EEPROMD) ? JME_SMB_LEN : 0;
2785 }
2786
2787 static int
2788 jme_get_eeprom(struct net_device *netdev,
2789                 struct ethtool_eeprom *eeprom, u8 *data)
2790 {
2791         struct jme_adapter *jme = netdev_priv(netdev);
2792         int i, offset = eeprom->offset, len = eeprom->len;
2793
2794         /*
2795          * ethtool will check the boundary for us
2796          */
2797         eeprom->magic = JME_EEPROM_MAGIC;
2798         for (i = 0 ; i < len ; ++i)
2799                 data[i] = jme_smb_read(jme, i + offset);
2800
2801         return 0;
2802 }
2803
2804 static int
2805 jme_set_eeprom(struct net_device *netdev,
2806                 struct ethtool_eeprom *eeprom, u8 *data)
2807 {
2808         struct jme_adapter *jme = netdev_priv(netdev);
2809         int i, offset = eeprom->offset, len = eeprom->len;
2810
2811         if (eeprom->magic != JME_EEPROM_MAGIC)
2812                 return -EINVAL;
2813
2814         /*
2815          * ethtool will check the boundary for us
2816          */
2817         for (i = 0 ; i < len ; ++i)
2818                 jme_smb_write(jme, i + offset, data[i]);
2819
2820         return 0;
2821 }
2822
2823 static const struct ethtool_ops jme_ethtool_ops = {
2824         .supported_coalesce_params = ETHTOOL_COALESCE_USECS |
2825                                      ETHTOOL_COALESCE_MAX_FRAMES |
2826                                      ETHTOOL_COALESCE_USE_ADAPTIVE_RX,
2827         .get_drvinfo            = jme_get_drvinfo,
2828         .get_regs_len           = jme_get_regs_len,
2829         .get_regs               = jme_get_regs,
2830         .get_coalesce           = jme_get_coalesce,
2831         .set_coalesce           = jme_set_coalesce,
2832         .get_pauseparam         = jme_get_pauseparam,
2833         .set_pauseparam         = jme_set_pauseparam,
2834         .get_wol                = jme_get_wol,
2835         .set_wol                = jme_set_wol,
2836         .get_link               = jme_get_link,
2837         .get_msglevel           = jme_get_msglevel,
2838         .set_msglevel           = jme_set_msglevel,
2839         .nway_reset             = jme_nway_reset,
2840         .get_eeprom_len         = jme_get_eeprom_len,
2841         .get_eeprom             = jme_get_eeprom,
2842         .set_eeprom             = jme_set_eeprom,
2843         .get_link_ksettings     = jme_get_link_ksettings,
2844         .set_link_ksettings     = jme_set_link_ksettings,
2845 };
2846
2847 static int
2848 jme_pci_dma64(struct pci_dev *pdev)
2849 {
2850         if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250 &&
2851             !dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)))
2852                 return 1;
2853
2854         if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250 &&
2855             !dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(40)))
2856                 return 1;
2857
2858         if (!dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))
2859                 return 0;
2860
2861         return -1;
2862 }
2863
2864 static inline void
2865 jme_phy_init(struct jme_adapter *jme)
2866 {
2867         u16 reg26;
2868
2869         reg26 = jme_mdio_read(jme->dev, jme->mii_if.phy_id, 26);
2870         jme_mdio_write(jme->dev, jme->mii_if.phy_id, 26, reg26 | 0x1000);
2871 }
2872
2873 static inline void
2874 jme_check_hw_ver(struct jme_adapter *jme)
2875 {
2876         u32 chipmode;
2877
2878         chipmode = jread32(jme, JME_CHIPMODE);
2879
2880         jme->fpgaver = (chipmode & CM_FPGAVER_MASK) >> CM_FPGAVER_SHIFT;
2881         jme->chiprev = (chipmode & CM_CHIPREV_MASK) >> CM_CHIPREV_SHIFT;
2882         jme->chip_main_rev = jme->chiprev & 0xF;
2883         jme->chip_sub_rev = (jme->chiprev >> 4) & 0xF;
2884 }
2885
2886 static const struct net_device_ops jme_netdev_ops = {
2887         .ndo_open               = jme_open,
2888         .ndo_stop               = jme_close,
2889         .ndo_validate_addr      = eth_validate_addr,
2890         .ndo_eth_ioctl          = jme_ioctl,
2891         .ndo_start_xmit         = jme_start_xmit,
2892         .ndo_set_mac_address    = jme_set_macaddr,
2893         .ndo_set_rx_mode        = jme_set_multi,
2894         .ndo_change_mtu         = jme_change_mtu,
2895         .ndo_tx_timeout         = jme_tx_timeout,
2896         .ndo_fix_features       = jme_fix_features,
2897         .ndo_set_features       = jme_set_features,
2898 #ifdef CONFIG_NET_POLL_CONTROLLER
2899         .ndo_poll_controller    = jme_netpoll,
2900 #endif
2901 };
2902
2903 static int
2904 jme_init_one(struct pci_dev *pdev,
2905              const struct pci_device_id *ent)
2906 {
2907         int rc = 0, using_dac, i;
2908         struct net_device *netdev;
2909         struct jme_adapter *jme;
2910         u16 bmcr, bmsr;
2911         u32 apmc;
2912
2913         /*
2914          * set up PCI device basics
2915          */
2916         pci_disable_link_state(pdev, PCIE_LINK_STATE_L0S | PCIE_LINK_STATE_L1 |
2917                                PCIE_LINK_STATE_CLKPM);
2918
2919         rc = pci_enable_device(pdev);
2920         if (rc) {
2921                 pr_err("Cannot enable PCI device\n");
2922                 goto err_out;
2923         }
2924
2925         using_dac = jme_pci_dma64(pdev);
2926         if (using_dac < 0) {
2927                 pr_err("Cannot set PCI DMA Mask\n");
2928                 rc = -EIO;
2929                 goto err_out_disable_pdev;
2930         }
2931
2932         if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
2933                 pr_err("No PCI resource region found\n");
2934                 rc = -ENOMEM;
2935                 goto err_out_disable_pdev;
2936         }
2937
2938         rc = pci_request_regions(pdev, DRV_NAME);
2939         if (rc) {
2940                 pr_err("Cannot obtain PCI resource region\n");
2941                 goto err_out_disable_pdev;
2942         }
2943
2944         pci_set_master(pdev);
2945
2946         /*
2947          * alloc and init net device
2948          */
2949         netdev = alloc_etherdev(sizeof(*jme));
2950         if (!netdev) {
2951                 rc = -ENOMEM;
2952                 goto err_out_release_regions;
2953         }
2954         netdev->netdev_ops = &jme_netdev_ops;
2955         netdev->ethtool_ops             = &jme_ethtool_ops;
2956         netdev->watchdog_timeo          = TX_TIMEOUT;
2957         netdev->hw_features             =       NETIF_F_IP_CSUM |
2958                                                 NETIF_F_IPV6_CSUM |
2959                                                 NETIF_F_SG |
2960                                                 NETIF_F_TSO |
2961                                                 NETIF_F_TSO6 |
2962                                                 NETIF_F_RXCSUM;
2963         netdev->features                =       NETIF_F_IP_CSUM |
2964                                                 NETIF_F_IPV6_CSUM |
2965                                                 NETIF_F_SG |
2966                                                 NETIF_F_TSO |
2967                                                 NETIF_F_TSO6 |
2968                                                 NETIF_F_HW_VLAN_CTAG_TX |
2969                                                 NETIF_F_HW_VLAN_CTAG_RX;
2970         if (using_dac)
2971                 netdev->features        |=      NETIF_F_HIGHDMA;
2972
2973         /* MTU range: 1280 - 9202*/
2974         netdev->min_mtu = IPV6_MIN_MTU;
2975         netdev->max_mtu = MAX_ETHERNET_JUMBO_PACKET_SIZE - ETH_HLEN;
2976
2977         SET_NETDEV_DEV(netdev, &pdev->dev);
2978         pci_set_drvdata(pdev, netdev);
2979
2980         /*
2981          * init adapter info
2982          */
2983         jme = netdev_priv(netdev);
2984         jme->pdev = pdev;
2985         jme->dev = netdev;
2986         jme->jme_rx = netif_rx;
2987         jme->old_mtu = netdev->mtu = 1500;
2988         jme->phylink = 0;
2989         jme->tx_ring_size = 1 << 10;
2990         jme->tx_ring_mask = jme->tx_ring_size - 1;
2991         jme->tx_wake_threshold = 1 << 9;
2992         jme->rx_ring_size = 1 << 9;
2993         jme->rx_ring_mask = jme->rx_ring_size - 1;
2994         jme->msg_enable = JME_DEF_MSG_ENABLE;
2995         jme->regs = ioremap(pci_resource_start(pdev, 0),
2996                              pci_resource_len(pdev, 0));
2997         if (!(jme->regs)) {
2998                 pr_err("Mapping PCI resource region error\n");
2999                 rc = -ENOMEM;
3000                 goto err_out_free_netdev;
3001         }
3002
3003         if (no_pseudohp) {
3004                 apmc = jread32(jme, JME_APMC) & ~JME_APMC_PSEUDO_HP_EN;
3005                 jwrite32(jme, JME_APMC, apmc);
3006         } else if (force_pseudohp) {
3007                 apmc = jread32(jme, JME_APMC) | JME_APMC_PSEUDO_HP_EN;
3008                 jwrite32(jme, JME_APMC, apmc);
3009         }
3010
3011         NETIF_NAPI_SET(netdev, &jme->napi, jme_poll, NAPI_POLL_WEIGHT)
3012
3013         spin_lock_init(&jme->phy_lock);
3014         spin_lock_init(&jme->macaddr_lock);
3015         spin_lock_init(&jme->rxmcs_lock);
3016
3017         atomic_set(&jme->link_changing, 1);
3018         atomic_set(&jme->rx_cleaning, 1);
3019         atomic_set(&jme->tx_cleaning, 1);
3020         atomic_set(&jme->rx_empty, 1);
3021
3022         tasklet_setup(&jme->pcc_task, jme_pcc_tasklet);
3023         INIT_WORK(&jme->linkch_task, jme_link_change_work);
3024         jme->dpi.cur = PCC_P1;
3025
3026         jme->reg_ghc = 0;
3027         jme->reg_rxcs = RXCS_DEFAULT;
3028         jme->reg_rxmcs = RXMCS_DEFAULT;
3029         jme->reg_txpfc = 0;
3030         jme->reg_pmcs = PMCS_MFEN;
3031         jme->reg_gpreg1 = GPREG1_DEFAULT;
3032
3033         if (jme->reg_rxmcs & RXMCS_CHECKSUM)
3034                 netdev->features |= NETIF_F_RXCSUM;
3035
3036         /*
3037          * Get Max Read Req Size from PCI Config Space
3038          */
3039         pci_read_config_byte(pdev, PCI_DCSR_MRRS, &jme->mrrs);
3040         jme->mrrs &= PCI_DCSR_MRRS_MASK;
3041         switch (jme->mrrs) {
3042         case MRRS_128B:
3043                 jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_128B;
3044                 break;
3045         case MRRS_256B:
3046                 jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_256B;
3047                 break;
3048         default:
3049                 jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_512B;
3050                 break;
3051         }
3052
3053         /*
3054          * Must check before reset_mac_processor
3055          */
3056         jme_check_hw_ver(jme);
3057         jme->mii_if.dev = netdev;
3058         if (jme->fpgaver) {
3059                 jme->mii_if.phy_id = 0;
3060                 for (i = 1 ; i < 32 ; ++i) {
3061                         bmcr = jme_mdio_read(netdev, i, MII_BMCR);
3062                         bmsr = jme_mdio_read(netdev, i, MII_BMSR);
3063                         if (bmcr != 0xFFFFU && (bmcr != 0 || bmsr != 0)) {
3064                                 jme->mii_if.phy_id = i;
3065                                 break;
3066                         }
3067                 }
3068
3069                 if (!jme->mii_if.phy_id) {
3070                         rc = -EIO;
3071                         pr_err("Can not find phy_id\n");
3072                         goto err_out_unmap;
3073                 }
3074
3075                 jme->reg_ghc |= GHC_LINK_POLL;
3076         } else {
3077                 jme->mii_if.phy_id = 1;
3078         }
3079         if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250)
3080                 jme->mii_if.supports_gmii = true;
3081         else
3082                 jme->mii_if.supports_gmii = false;
3083         jme->mii_if.phy_id_mask = 0x1F;
3084         jme->mii_if.reg_num_mask = 0x1F;
3085         jme->mii_if.mdio_read = jme_mdio_read;
3086         jme->mii_if.mdio_write = jme_mdio_write;
3087
3088         jme_clear_pm_disable_wol(jme);
3089         device_init_wakeup(&pdev->dev, true);
3090
3091         jme_set_phyfifo_5level(jme);
3092         jme->pcirev = pdev->revision;
3093         if (!jme->fpgaver)
3094                 jme_phy_init(jme);
3095         jme_phy_off(jme);
3096
3097         /*
3098          * Reset MAC processor and reload EEPROM for MAC Address
3099          */
3100         jme_reset_mac_processor(jme);
3101         rc = jme_reload_eeprom(jme);
3102         if (rc) {
3103                 pr_err("Reload eeprom for reading MAC Address error\n");
3104                 goto err_out_unmap;
3105         }
3106         jme_load_macaddr(netdev);
3107
3108         /*
3109          * Tell stack that we are not ready to work until open()
3110          */
3111         netif_carrier_off(netdev);
3112
3113         rc = register_netdev(netdev);
3114         if (rc) {
3115                 pr_err("Cannot register net device\n");
3116                 goto err_out_unmap;
3117         }
3118
3119         netif_info(jme, probe, jme->dev, "%s%s chiprev:%x pcirev:%x macaddr:%pM\n",
3120                    (jme->pdev->device == PCI_DEVICE_ID_JMICRON_JMC250) ?
3121                    "JMC250 Gigabit Ethernet" :
3122                    (jme->pdev->device == PCI_DEVICE_ID_JMICRON_JMC260) ?
3123                    "JMC260 Fast Ethernet" : "Unknown",
3124                    (jme->fpgaver != 0) ? " (FPGA)" : "",
3125                    (jme->fpgaver != 0) ? jme->fpgaver : jme->chiprev,
3126                    jme->pcirev, netdev->dev_addr);
3127
3128         return 0;
3129
3130 err_out_unmap:
3131         iounmap(jme->regs);
3132 err_out_free_netdev:
3133         free_netdev(netdev);
3134 err_out_release_regions:
3135         pci_release_regions(pdev);
3136 err_out_disable_pdev:
3137         pci_disable_device(pdev);
3138 err_out:
3139         return rc;
3140 }
3141
3142 static void
3143 jme_remove_one(struct pci_dev *pdev)
3144 {
3145         struct net_device *netdev = pci_get_drvdata(pdev);
3146         struct jme_adapter *jme = netdev_priv(netdev);
3147
3148         unregister_netdev(netdev);
3149         iounmap(jme->regs);
3150         free_netdev(netdev);
3151         pci_release_regions(pdev);
3152         pci_disable_device(pdev);
3153
3154 }
3155
3156 static void
3157 jme_shutdown(struct pci_dev *pdev)
3158 {
3159         struct net_device *netdev = pci_get_drvdata(pdev);
3160         struct jme_adapter *jme = netdev_priv(netdev);
3161
3162         jme_powersave_phy(jme);
3163         pci_pme_active(pdev, true);
3164 }
3165
3166 #ifdef CONFIG_PM_SLEEP
3167 static int
3168 jme_suspend(struct device *dev)
3169 {
3170         struct net_device *netdev = dev_get_drvdata(dev);
3171         struct jme_adapter *jme = netdev_priv(netdev);
3172
3173         if (!netif_running(netdev))
3174                 return 0;
3175
3176         atomic_dec(&jme->link_changing);
3177
3178         netif_device_detach(netdev);
3179         netif_stop_queue(netdev);
3180         jme_stop_irq(jme);
3181
3182         tasklet_disable(&jme->txclean_task);
3183         tasklet_disable(&jme->rxclean_task);
3184         tasklet_disable(&jme->rxempty_task);
3185
3186         if (netif_carrier_ok(netdev)) {
3187                 if (test_bit(JME_FLAG_POLL, &jme->flags))
3188                         jme_polling_mode(jme);
3189
3190                 jme_stop_pcc_timer(jme);
3191                 jme_disable_rx_engine(jme);
3192                 jme_disable_tx_engine(jme);
3193                 jme_reset_mac_processor(jme);
3194                 jme_free_rx_resources(jme);
3195                 jme_free_tx_resources(jme);
3196                 netif_carrier_off(netdev);
3197                 jme->phylink = 0;
3198         }
3199
3200         tasklet_enable(&jme->txclean_task);
3201         tasklet_enable(&jme->rxclean_task);
3202         tasklet_enable(&jme->rxempty_task);
3203
3204         jme_powersave_phy(jme);
3205
3206         return 0;
3207 }
3208
3209 static int
3210 jme_resume(struct device *dev)
3211 {
3212         struct net_device *netdev = dev_get_drvdata(dev);
3213         struct jme_adapter *jme = netdev_priv(netdev);
3214
3215         if (!netif_running(netdev))
3216                 return 0;
3217
3218         jme_clear_pm_disable_wol(jme);
3219         jme_phy_on(jme);
3220         if (test_bit(JME_FLAG_SSET, &jme->flags))
3221                 jme_set_link_ksettings(netdev, &jme->old_cmd);
3222         else
3223                 jme_reset_phy_processor(jme);
3224         jme_phy_calibration(jme);
3225         jme_phy_setEA(jme);
3226         netif_device_attach(netdev);
3227
3228         atomic_inc(&jme->link_changing);
3229
3230         jme_reset_link(jme);
3231
3232         jme_start_irq(jme);
3233
3234         return 0;
3235 }
3236
3237 static SIMPLE_DEV_PM_OPS(jme_pm_ops, jme_suspend, jme_resume);
3238 #define JME_PM_OPS (&jme_pm_ops)
3239
3240 #else
3241
3242 #define JME_PM_OPS NULL
3243 #endif
3244
3245 static const struct pci_device_id jme_pci_tbl[] = {
3246         { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMC250) },
3247         { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMC260) },
3248         { }
3249 };
3250
3251 static struct pci_driver jme_driver = {
3252         .name           = DRV_NAME,
3253         .id_table       = jme_pci_tbl,
3254         .probe          = jme_init_one,
3255         .remove         = jme_remove_one,
3256         .shutdown       = jme_shutdown,
3257         .driver.pm      = JME_PM_OPS,
3258 };
3259
3260 static int __init
3261 jme_init_module(void)
3262 {
3263         pr_info("JMicron JMC2XX ethernet driver version %s\n", DRV_VERSION);
3264         return pci_register_driver(&jme_driver);
3265 }
3266
3267 static void __exit
3268 jme_cleanup_module(void)
3269 {
3270         pci_unregister_driver(&jme_driver);
3271 }
3272
3273 module_init(jme_init_module);
3274 module_exit(jme_cleanup_module);
3275
3276 MODULE_AUTHOR("Guo-Fu Tseng <cooldavid@cooldavid.org>");
3277 MODULE_DESCRIPTION("JMicron JMC2x0 PCI Express Ethernet driver");
3278 MODULE_LICENSE("GPL");
3279 MODULE_VERSION(DRV_VERSION);
3280 MODULE_DEVICE_TABLE(pci, jme_pci_tbl);