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 = pci_map_page(jme->pdev, virt_to_page(skb->data),
 738                                offset_in_page(skb->data), skb_tailroom(skb),
 739                                PCI_DMA_FROMDEVICE);
 740         if (unlikely(pci_dma_mapping_error(jme->pdev, mapping))) {
 741                 dev_kfree_skb(skb);
 742                 return -ENOMEM;
 743         }
 744
 745         if (likely(rxbi->mapping))
 746                 pci_unmap_page(jme->pdev, rxbi->mapping,
 747                                rxbi->len, PCI_DMA_FROMDEVICE);
 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                 pci_unmap_page(jme->pdev,
 764                                  rxbi->mapping,
 765                                  rxbi->len,
 766                                  PCI_DMA_FROMDEVICE);
 767                 dev_kfree_skb(rxbi->skb);
 768                 rxbi->skb = NULL;
 769                 rxbi->mapping = 0;
 770                 rxbi->len = 0;
 771         }
 772 }
 773
 774 static void
 775 jme_free_rx_resources(struct jme_adapter *jme)
 776 {
 777         int i;
 778         struct jme_ring *rxring = &(jme->rxring[0]);
 779
 780         if (rxring->alloc) {
 781                 if (rxring->bufinf) {
 782                         for (i = 0 ; i < jme->rx_ring_size ; ++i)
 783                                 jme_free_rx_buf(jme, i);
 784                         kfree(rxring->bufinf);
 785                 }
 786
 787                 dma_free_coherent(&(jme->pdev->dev),
 788                                   RX_RING_ALLOC_SIZE(jme->rx_ring_size),
 789                                   rxring->alloc,
 790                                   rxring->dmaalloc);
 791                 rxring->alloc    = NULL;
 792                 rxring->desc     = NULL;
 793                 rxring->dmaalloc = 0;
 794                 rxring->dma      = 0;
 795                 rxring->bufinf   = NULL;
 796         }
 797         rxring->next_to_use   = 0;
 798         atomic_set(&rxring->next_to_clean, 0);
 799 }
 800
 801 static int
 802 jme_setup_rx_resources(struct jme_adapter *jme)
 803 {
 804         int i;
 805         struct jme_ring *rxring = &(jme->rxring[0]);
 806
 807         rxring->alloc = dma_alloc_coherent(&(jme->pdev->dev),
 808                                    RX_RING_ALLOC_SIZE(jme->rx_ring_size),
 809                                    &(rxring->dmaalloc),
 810                                    GFP_ATOMIC);
 811         if (!rxring->alloc)
 812                 goto err_set_null;
 813
 814         /*
 815          * 16 Bytes align
 816          */
 817         rxring->desc            = (void *)ALIGN((unsigned long)(rxring->alloc),
 818                                                 RING_DESC_ALIGN);
 819         rxring->dma             = ALIGN(rxring->dmaalloc, RING_DESC_ALIGN);
 820         rxring->next_to_use     = 0;
 821         atomic_set(&rxring->next_to_clean, 0);
 822
 823         rxring->bufinf          = kcalloc(jme->rx_ring_size,
 824                                                 sizeof(struct jme_buffer_info),
 825                                                 GFP_ATOMIC);
 826         if (unlikely(!(rxring->bufinf)))
 827                 goto err_free_rxring;
 828
 829         /*
 830          * Initiallize Receive Descriptors
 831          */
 832         for (i = 0 ; i < jme->rx_ring_size ; ++i) {
 833                 if (unlikely(jme_make_new_rx_buf(jme, i))) {
 834                         jme_free_rx_resources(jme);
 835                         return -ENOMEM;
 836                 }
 837
 838                 jme_set_clean_rxdesc(jme, i);
 839         }
 840
 841         return 0;
 842
 843 err_free_rxring:
 844         dma_free_coherent(&(jme->pdev->dev),
 845                           RX_RING_ALLOC_SIZE(jme->rx_ring_size),
 846                           rxring->alloc,
 847                           rxring->dmaalloc);
 848 err_set_null:
 849         rxring->desc = NULL;
 850         rxring->dmaalloc = 0;
 851         rxring->dma = 0;
 852         rxring->bufinf = NULL;
 853
 854         return -ENOMEM;
 855 }
 856
 857 static inline void
 858 jme_enable_rx_engine(struct jme_adapter *jme)
 859 {
 860         /*
 861          * Select Queue 0
 862          */
 863         jwrite32(jme, JME_RXCS, jme->reg_rxcs |
 864                                 RXCS_QUEUESEL_Q0);
 865         wmb();
 866
 867         /*
 868          * Setup RX DMA Bass Address
 869          */
 870         jwrite32(jme, JME_RXDBA_LO, (__u64)(jme->rxring[0].dma) & 0xFFFFFFFFUL);
 871         jwrite32(jme, JME_RXDBA_HI, (__u64)(jme->rxring[0].dma) >> 32);
 872         jwrite32(jme, JME_RXNDA, (__u64)(jme->rxring[0].dma) & 0xFFFFFFFFUL);
 873
 874         /*
 875          * Setup RX Descriptor Count
 876          */
 877         jwrite32(jme, JME_RXQDC, jme->rx_ring_size);
 878
 879         /*
 880          * Setup Unicast Filter
 881          */
 882         jme_set_unicastaddr(jme->dev);
 883         jme_set_multi(jme->dev);
 884
 885         /*
 886          * Enable RX Engine
 887          */
 888         wmb();
 889         jwrite32f(jme, JME_RXCS, jme->reg_rxcs |
 890                                 RXCS_QUEUESEL_Q0 |
 891                                 RXCS_ENABLE |
 892                                 RXCS_QST);
 893
 894         /*
 895          * Start clock for RX MAC Processor
 896          */
 897         jme_mac_rxclk_on(jme);
 898 }
 899
 900 static inline void
 901 jme_restart_rx_engine(struct jme_adapter *jme)
 902 {
 903         /*
 904          * Start RX Engine
 905          */
 906         jwrite32(jme, JME_RXCS, jme->reg_rxcs |
 907                                 RXCS_QUEUESEL_Q0 |
 908                                 RXCS_ENABLE |
 909                                 RXCS_QST);
 910 }
 911
 912 static inline void
 913 jme_disable_rx_engine(struct jme_adapter *jme)
 914 {
 915         int i;
 916         u32 val;
 917
 918         /*
 919          * Disable RX Engine
 920          */
 921         jwrite32(jme, JME_RXCS, jme->reg_rxcs);
 922         wmb();
 923
 924         val = jread32(jme, JME_RXCS);
 925         for (i = JME_RX_DISABLE_TIMEOUT ; (val & RXCS_ENABLE) && i > 0 ; --i) {
 926                 mdelay(1);
 927                 val = jread32(jme, JME_RXCS);
 928                 rmb();
 929         }
 930
 931         if (!i)
 932                 pr_err("Disable RX engine timeout\n");
 933
 934         /*
 935          * Stop clock for RX MAC Processor
 936          */
 937         jme_mac_rxclk_off(jme);
 938 }
 939
 940 static u16
 941 jme_udpsum(struct sk_buff *skb)
 942 {
 943         u16 csum = 0xFFFFu;
 944
 945         if (skb->len < (ETH_HLEN + sizeof(struct iphdr)))
 946                 return csum;
 947         if (skb->protocol != htons(ETH_P_IP))
 948                 return csum;
 949         skb_set_network_header(skb, ETH_HLEN);
 950         if ((ip_hdr(skb)->protocol != IPPROTO_UDP) ||
 951             (skb->len < (ETH_HLEN +
 952                         (ip_hdr(skb)->ihl << 2) +
 953                         sizeof(struct udphdr)))) {
 954                 skb_reset_network_header(skb);
 955                 return csum;
 956         }
 957         skb_set_transport_header(skb,
 958                         ETH_HLEN + (ip_hdr(skb)->ihl << 2));
 959         csum = udp_hdr(skb)->check;
 960         skb_reset_transport_header(skb);
 961         skb_reset_network_header(skb);
 962
 963         return csum;
 964 }
 965
 966 static int
 967 jme_rxsum_ok(struct jme_adapter *jme, u16 flags, struct sk_buff *skb)
 968 {
 969         if (!(flags & (RXWBFLAG_TCPON | RXWBFLAG_UDPON | RXWBFLAG_IPV4)))
 970                 return false;
 971
 972         if (unlikely((flags & (RXWBFLAG_MF | RXWBFLAG_TCPON | RXWBFLAG_TCPCS))
 973                         == RXWBFLAG_TCPON)) {
 974                 if (flags & RXWBFLAG_IPV4)
 975                         netif_err(jme, rx_err, jme->dev, "TCP Checksum error\n");
 976                 return false;
 977         }
 978
 979         if (unlikely((flags & (RXWBFLAG_MF | RXWBFLAG_UDPON | RXWBFLAG_UDPCS))
 980                         == RXWBFLAG_UDPON) && jme_udpsum(skb)) {
 981                 if (flags & RXWBFLAG_IPV4)
 982                         netif_err(jme, rx_err, jme->dev, "UDP Checksum error\n");
 983                 return false;
 984         }
 985
 986         if (unlikely((flags & (RXWBFLAG_IPV4 | RXWBFLAG_IPCS))
 987                         == RXWBFLAG_IPV4)) {
 988                 netif_err(jme, rx_err, jme->dev, "IPv4 Checksum error\n");
 989                 return false;
 990         }
 991
 992         return true;
 993 }
 994
 995 static void
 996 jme_alloc_and_feed_skb(struct jme_adapter *jme, int idx)
 997 {
 998         struct jme_ring *rxring = &(jme->rxring[0]);
 999         struct rxdesc *rxdesc = rxring->desc;
1000         struct jme_buffer_info *rxbi = rxring->bufinf;
1001         struct sk_buff *skb;
1002         int framesize;
1003
1004         rxdesc += idx;
1005         rxbi += idx;
1006
1007         skb = rxbi->skb;
1008         pci_dma_sync_single_for_cpu(jme->pdev,
1009                                         rxbi->mapping,
1010                                         rxbi->len,
1011                                         PCI_DMA_FROMDEVICE);
1012
1013         if (unlikely(jme_make_new_rx_buf(jme, idx))) {
1014                 pci_dma_sync_single_for_device(jme->pdev,
1015                                                 rxbi->mapping,
1016                                                 rxbi->len,
1017                                                 PCI_DMA_FROMDEVICE);
1018
1019                 ++(NET_STAT(jme).rx_dropped);
1020         } else {
1021                 framesize = le16_to_cpu(rxdesc->descwb.framesize)
1022                                 - RX_PREPAD_SIZE;
1023
1024                 skb_reserve(skb, RX_PREPAD_SIZE);
1025                 skb_put(skb, framesize);
1026                 skb->protocol = eth_type_trans(skb, jme->dev);
1027
1028                 if (jme_rxsum_ok(jme, le16_to_cpu(rxdesc->descwb.flags), skb))
1029                         skb->ip_summed = CHECKSUM_UNNECESSARY;
1030                 else
1031                         skb_checksum_none_assert(skb);
1032
1033                 if (rxdesc->descwb.flags & cpu_to_le16(RXWBFLAG_TAGON)) {
1034                         u16 vid = le16_to_cpu(rxdesc->descwb.vlan);
1035
1036                         __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid);
1037                         NET_STAT(jme).rx_bytes += 4;
1038                 }
1039                 jme->jme_rx(skb);
1040
1041                 if ((rxdesc->descwb.flags & cpu_to_le16(RXWBFLAG_DEST)) ==
1042                     cpu_to_le16(RXWBFLAG_DEST_MUL))
1043                         ++(NET_STAT(jme).multicast);
1044
1045                 NET_STAT(jme).rx_bytes += framesize;
1046                 ++(NET_STAT(jme).rx_packets);
1047         }
1048
1049         jme_set_clean_rxdesc(jme, idx);
1050
1051 }
1052
1053 static int
1054 jme_process_receive(struct jme_adapter *jme, int limit)
1055 {
1056         struct jme_ring *rxring = &(jme->rxring[0]);
1057         struct rxdesc *rxdesc;
1058         int i, j, ccnt, desccnt, mask = jme->rx_ring_mask;
1059
1060         if (unlikely(!atomic_dec_and_test(&jme->rx_cleaning)))
1061                 goto out_inc;
1062
1063         if (unlikely(atomic_read(&jme->link_changing) != 1))
1064                 goto out_inc;
1065
1066         if (unlikely(!netif_carrier_ok(jme->dev)))
1067                 goto out_inc;
1068
1069         i = atomic_read(&rxring->next_to_clean);
1070         while (limit > 0) {
1071                 rxdesc = rxring->desc;
1072                 rxdesc += i;
1073
1074                 if ((rxdesc->descwb.flags & cpu_to_le16(RXWBFLAG_OWN)) ||
1075                 !(rxdesc->descwb.desccnt & RXWBDCNT_WBCPL))
1076                         goto out;
1077                 --limit;
1078
1079                 rmb();
1080                 desccnt = rxdesc->descwb.desccnt & RXWBDCNT_DCNT;
1081
1082                 if (unlikely(desccnt > 1 ||
1083                 rxdesc->descwb.errstat & RXWBERR_ALLERR)) {
1084
1085                         if (rxdesc->descwb.errstat & RXWBERR_CRCERR)
1086                                 ++(NET_STAT(jme).rx_crc_errors);
1087                         else if (rxdesc->descwb.errstat & RXWBERR_OVERUN)
1088                                 ++(NET_STAT(jme).rx_fifo_errors);
1089                         else
1090                                 ++(NET_STAT(jme).rx_errors);
1091
1092                         if (desccnt > 1)
1093                                 limit -= desccnt - 1;
1094
1095                         for (j = i, ccnt = desccnt ; ccnt-- ; ) {
1096                                 jme_set_clean_rxdesc(jme, j);
1097                                 j = (j + 1) & (mask);
1098                         }
1099
1100                 } else {
1101                         jme_alloc_and_feed_skb(jme, i);
1102                 }
1103
1104                 i = (i + desccnt) & (mask);
1105         }
1106
1107 out:
1108         atomic_set(&rxring->next_to_clean, i);
1109
1110 out_inc:
1111         atomic_inc(&jme->rx_cleaning);
1112
1113         return limit > 0 ? limit : 0;
1114
1115 }
1116
1117 static void
1118 jme_attempt_pcc(struct dynpcc_info *dpi, int atmp)
1119 {
1120         if (likely(atmp == dpi->cur)) {
1121                 dpi->cnt = 0;
1122                 return;
1123         }
1124
1125         if (dpi->attempt == atmp) {
1126                 ++(dpi->cnt);
1127         } else {
1128                 dpi->attempt = atmp;
1129                 dpi->cnt = 0;
1130         }
1131
1132 }
1133
1134 static void
1135 jme_dynamic_pcc(struct jme_adapter *jme)
1136 {
1137         register struct dynpcc_info *dpi = &(jme->dpi);
1138
1139         if ((NET_STAT(jme).rx_bytes - dpi->last_bytes) > PCC_P3_THRESHOLD)
1140                 jme_attempt_pcc(dpi, PCC_P3);
1141         else if ((NET_STAT(jme).rx_packets - dpi->last_pkts) > PCC_P2_THRESHOLD ||
1142                  dpi->intr_cnt > PCC_INTR_THRESHOLD)
1143                 jme_attempt_pcc(dpi, PCC_P2);
1144         else
1145                 jme_attempt_pcc(dpi, PCC_P1);
1146
1147         if (unlikely(dpi->attempt != dpi->cur && dpi->cnt > 5)) {
1148                 if (dpi->attempt < dpi->cur)
1149                         tasklet_schedule(&jme->rxclean_task);
1150                 jme_set_rx_pcc(jme, dpi->attempt);
1151                 dpi->cur = dpi->attempt;
1152                 dpi->cnt = 0;
1153         }
1154 }
1155
1156 static void
1157 jme_start_pcc_timer(struct jme_adapter *jme)
1158 {
1159         struct dynpcc_info *dpi = &(jme->dpi);
1160         dpi->last_bytes         = NET_STAT(jme).rx_bytes;
1161         dpi->last_pkts          = NET_STAT(jme).rx_packets;
1162         dpi->intr_cnt           = 0;
1163         jwrite32(jme, JME_TMCSR,
1164                 TMCSR_EN | ((0xFFFFFF - PCC_INTERVAL_US) & TMCSR_CNT));
1165 }
1166
1167 static inline void
1168 jme_stop_pcc_timer(struct jme_adapter *jme)
1169 {
1170         jwrite32(jme, JME_TMCSR, 0);
1171 }
1172
1173 static void
1174 jme_shutdown_nic(struct jme_adapter *jme)
1175 {
1176         u32 phylink;
1177
1178         phylink = jme_linkstat_from_phy(jme);
1179
1180         if (!(phylink & PHY_LINK_UP)) {
1181                 /*
1182                  * Disable all interrupt before issue timer
1183                  */
1184                 jme_stop_irq(jme);
1185                 jwrite32(jme, JME_TIMER2, TMCSR_EN | 0xFFFFFE);
1186         }
1187 }
1188
1189 static void
1190 jme_pcc_tasklet(unsigned long arg)
1191 {
1192         struct jme_adapter *jme = (struct jme_adapter *)arg;
1193         struct net_device *netdev = jme->dev;
1194
1195         if (unlikely(test_bit(JME_FLAG_SHUTDOWN, &jme->flags))) {
1196                 jme_shutdown_nic(jme);
1197                 return;
1198         }
1199
1200         if (unlikely(!netif_carrier_ok(netdev) ||
1201                 (atomic_read(&jme->link_changing) != 1)
1202         )) {
1203                 jme_stop_pcc_timer(jme);
1204                 return;
1205         }
1206
1207         if (!(test_bit(JME_FLAG_POLL, &jme->flags)))
1208                 jme_dynamic_pcc(jme);
1209
1210         jme_start_pcc_timer(jme);
1211 }
1212
1213 static inline void
1214 jme_polling_mode(struct jme_adapter *jme)
1215 {
1216         jme_set_rx_pcc(jme, PCC_OFF);
1217 }
1218
1219 static inline void
1220 jme_interrupt_mode(struct jme_adapter *jme)
1221 {
1222         jme_set_rx_pcc(jme, PCC_P1);
1223 }
1224
1225 static inline int
1226 jme_pseudo_hotplug_enabled(struct jme_adapter *jme)
1227 {
1228         u32 apmc;
1229         apmc = jread32(jme, JME_APMC);
1230         return apmc & JME_APMC_PSEUDO_HP_EN;
1231 }
1232
1233 static void
1234 jme_start_shutdown_timer(struct jme_adapter *jme)
1235 {
1236         u32 apmc;
1237
1238         apmc = jread32(jme, JME_APMC) | JME_APMC_PCIE_SD_EN;
1239         apmc &= ~JME_APMC_EPIEN_CTRL;
1240         if (!no_extplug) {
1241                 jwrite32f(jme, JME_APMC, apmc | JME_APMC_EPIEN_CTRL_EN);
1242                 wmb();
1243         }
1244         jwrite32f(jme, JME_APMC, apmc);
1245
1246         jwrite32f(jme, JME_TIMER2, 0);
1247         set_bit(JME_FLAG_SHUTDOWN, &jme->flags);
1248         jwrite32(jme, JME_TMCSR,
1249                 TMCSR_EN | ((0xFFFFFF - APMC_PHP_SHUTDOWN_DELAY) & TMCSR_CNT));
1250 }
1251
1252 static void
1253 jme_stop_shutdown_timer(struct jme_adapter *jme)
1254 {
1255         u32 apmc;
1256
1257         jwrite32f(jme, JME_TMCSR, 0);
1258         jwrite32f(jme, JME_TIMER2, 0);
1259         clear_bit(JME_FLAG_SHUTDOWN, &jme->flags);
1260
1261         apmc = jread32(jme, JME_APMC);
1262         apmc &= ~(JME_APMC_PCIE_SD_EN | JME_APMC_EPIEN_CTRL);
1263         jwrite32f(jme, JME_APMC, apmc | JME_APMC_EPIEN_CTRL_DIS);
1264         wmb();
1265         jwrite32f(jme, JME_APMC, apmc);
1266 }
1267
1268 static void
1269 jme_link_change_tasklet(unsigned long arg)
1270 {
1271         struct jme_adapter *jme = (struct jme_adapter *)arg;
1272         struct net_device *netdev = jme->dev;
1273         int rc;
1274
1275         while (!atomic_dec_and_test(&jme->link_changing)) {
1276                 atomic_inc(&jme->link_changing);
1277                 netif_info(jme, intr, jme->dev, "Get link change lock failed\n");
1278                 while (atomic_read(&jme->link_changing) != 1)
1279                         netif_info(jme, intr, jme->dev, "Waiting link change lock\n");
1280         }
1281
1282         if (jme_check_link(netdev, 1) && jme->old_mtu == netdev->mtu)
1283                 goto out;
1284
1285         jme->old_mtu = netdev->mtu;
1286         netif_stop_queue(netdev);
1287         if (jme_pseudo_hotplug_enabled(jme))
1288                 jme_stop_shutdown_timer(jme);
1289
1290         jme_stop_pcc_timer(jme);
1291         tasklet_disable(&jme->txclean_task);
1292         tasklet_disable(&jme->rxclean_task);
1293         tasklet_disable(&jme->rxempty_task);
1294
1295         if (netif_carrier_ok(netdev)) {
1296                 jme_disable_rx_engine(jme);
1297                 jme_disable_tx_engine(jme);
1298                 jme_reset_mac_processor(jme);
1299                 jme_free_rx_resources(jme);
1300                 jme_free_tx_resources(jme);
1301
1302                 if (test_bit(JME_FLAG_POLL, &jme->flags))
1303                         jme_polling_mode(jme);
1304
1305                 netif_carrier_off(netdev);
1306         }
1307
1308         jme_check_link(netdev, 0);
1309         if (netif_carrier_ok(netdev)) {
1310                 rc = jme_setup_rx_resources(jme);
1311                 if (rc) {
1312                         pr_err("Allocating resources for RX error, Device STOPPED!\n");
1313                         goto out_enable_tasklet;
1314                 }
1315
1316                 rc = jme_setup_tx_resources(jme);
1317                 if (rc) {
1318                         pr_err("Allocating resources for TX error, Device STOPPED!\n");
1319                         goto err_out_free_rx_resources;
1320                 }
1321
1322                 jme_enable_rx_engine(jme);
1323                 jme_enable_tx_engine(jme);
1324
1325                 netif_start_queue(netdev);
1326
1327                 if (test_bit(JME_FLAG_POLL, &jme->flags))
1328                         jme_interrupt_mode(jme);
1329
1330                 jme_start_pcc_timer(jme);
1331         } else if (jme_pseudo_hotplug_enabled(jme)) {
1332                 jme_start_shutdown_timer(jme);
1333         }
1334
1335         goto out_enable_tasklet;
1336
1337 err_out_free_rx_resources:
1338         jme_free_rx_resources(jme);
1339 out_enable_tasklet:
1340         tasklet_enable(&jme->txclean_task);
1341         tasklet_enable(&jme->rxclean_task);
1342         tasklet_enable(&jme->rxempty_task);
1343 out:
1344         atomic_inc(&jme->link_changing);
1345 }
1346
1347 static void
1348 jme_rx_clean_tasklet(unsigned long arg)
1349 {
1350         struct jme_adapter *jme = (struct jme_adapter *)arg;
1351         struct dynpcc_info *dpi = &(jme->dpi);
1352
1353         jme_process_receive(jme, jme->rx_ring_size);
1354         ++(dpi->intr_cnt);
1355
1356 }
1357
1358 static int
1359 jme_poll(JME_NAPI_HOLDER(holder), JME_NAPI_WEIGHT(budget))
1360 {
1361         struct jme_adapter *jme = jme_napi_priv(holder);
1362         int rest;
1363
1364         rest = jme_process_receive(jme, JME_NAPI_WEIGHT_VAL(budget));
1365
1366         while (atomic_read(&jme->rx_empty) > 0) {
1367                 atomic_dec(&jme->rx_empty);
1368                 ++(NET_STAT(jme).rx_dropped);
1369                 jme_restart_rx_engine(jme);
1370         }
1371         atomic_inc(&jme->rx_empty);
1372
1373         if (rest) {
1374                 JME_RX_COMPLETE(netdev, holder);
1375                 jme_interrupt_mode(jme);
1376         }
1377
1378         JME_NAPI_WEIGHT_SET(budget, rest);
1379         return JME_NAPI_WEIGHT_VAL(budget) - rest;
1380 }
1381
1382 static void
1383 jme_rx_empty_tasklet(unsigned long arg)
1384 {
1385         struct jme_adapter *jme = (struct jme_adapter *)arg;
1386
1387         if (unlikely(atomic_read(&jme->link_changing) != 1))
1388                 return;
1389
1390         if (unlikely(!netif_carrier_ok(jme->dev)))
1391                 return;
1392
1393         netif_info(jme, rx_status, jme->dev, "RX Queue Full!\n");
1394
1395         jme_rx_clean_tasklet(arg);
1396
1397         while (atomic_read(&jme->rx_empty) > 0) {
1398                 atomic_dec(&jme->rx_empty);
1399                 ++(NET_STAT(jme).rx_dropped);
1400                 jme_restart_rx_engine(jme);
1401         }
1402         atomic_inc(&jme->rx_empty);
1403 }
1404
1405 static void
1406 jme_wake_queue_if_stopped(struct jme_adapter *jme)
1407 {
1408         struct jme_ring *txring = &(jme->txring[0]);
1409
1410         smp_wmb();
1411         if (unlikely(netif_queue_stopped(jme->dev) &&
1412         atomic_read(&txring->nr_free) >= (jme->tx_wake_threshold))) {
1413                 netif_info(jme, tx_done, jme->dev, "TX Queue Waked\n");
1414                 netif_wake_queue(jme->dev);
1415         }
1416
1417 }
1418
1419 static void
1420 jme_tx_clean_tasklet(unsigned long arg)
1421 {
1422         struct jme_adapter *jme = (struct jme_adapter *)arg;
1423         struct jme_ring *txring = &(jme->txring[0]);
1424         struct txdesc *txdesc = txring->desc;
1425         struct jme_buffer_info *txbi = txring->bufinf, *ctxbi, *ttxbi;
1426         int i, j, cnt = 0, max, err, mask;
1427
1428         tx_dbg(jme, "Into txclean\n");
1429
1430         if (unlikely(!atomic_dec_and_test(&jme->tx_cleaning)))
1431                 goto out;
1432
1433         if (unlikely(atomic_read(&jme->link_changing) != 1))
1434                 goto out;
1435
1436         if (unlikely(!netif_carrier_ok(jme->dev)))
1437                 goto out;
1438
1439         max = jme->tx_ring_size - atomic_read(&txring->nr_free);
1440         mask = jme->tx_ring_mask;
1441
1442         for (i = atomic_read(&txring->next_to_clean) ; cnt < max ; ) {
1443
1444                 ctxbi = txbi + i;
1445
1446                 if (likely(ctxbi->skb &&
1447                 !(txdesc[i].descwb.flags & TXWBFLAG_OWN))) {
1448
1449                         tx_dbg(jme, "txclean: %d+%d@%lu\n",
1450                                i, ctxbi->nr_desc, jiffies);
1451
1452                         err = txdesc[i].descwb.flags & TXWBFLAG_ALLERR;
1453
1454                         for (j = 1 ; j < ctxbi->nr_desc ; ++j) {
1455                                 ttxbi = txbi + ((i + j) & (mask));
1456                                 txdesc[(i + j) & (mask)].dw[0] = 0;
1457
1458                                 pci_unmap_page(jme->pdev,
1459                                                  ttxbi->mapping,
1460                                                  ttxbi->len,
1461                                                  PCI_DMA_TODEVICE);
1462
1463                                 ttxbi->mapping = 0;
1464                                 ttxbi->len = 0;
1465                         }
1466
1467                         dev_kfree_skb(ctxbi->skb);
1468
1469                         cnt += ctxbi->nr_desc;
1470
1471                         if (unlikely(err)) {
1472                                 ++(NET_STAT(jme).tx_carrier_errors);
1473                         } else {
1474                                 ++(NET_STAT(jme).tx_packets);
1475                                 NET_STAT(jme).tx_bytes += ctxbi->len;
1476                         }
1477
1478                         ctxbi->skb = NULL;
1479                         ctxbi->len = 0;
1480                         ctxbi->start_xmit = 0;
1481
1482                 } else {
1483                         break;
1484                 }
1485
1486                 i = (i + ctxbi->nr_desc) & mask;
1487
1488                 ctxbi->nr_desc = 0;
1489         }
1490
1491         tx_dbg(jme, "txclean: done %d@%lu\n", i, jiffies);
1492         atomic_set(&txring->next_to_clean, i);
1493         atomic_add(cnt, &txring->nr_free);
1494
1495         jme_wake_queue_if_stopped(jme);
1496
1497 out:
1498         atomic_inc(&jme->tx_cleaning);
1499 }
1500
1501 static void
1502 jme_intr_msi(struct jme_adapter *jme, u32 intrstat)
1503 {
1504         /*
1505          * Disable interrupt
1506          */
1507         jwrite32f(jme, JME_IENC, INTR_ENABLE);
1508
1509         if (intrstat & (INTR_LINKCH | INTR_SWINTR)) {
1510                 /*
1511                  * Link change event is critical
1512                  * all other events are ignored
1513                  */
1514                 jwrite32(jme, JME_IEVE, intrstat);
1515                 tasklet_schedule(&jme->linkch_task);
1516                 goto out_reenable;
1517         }
1518
1519         if (intrstat & INTR_TMINTR) {
1520                 jwrite32(jme, JME_IEVE, INTR_TMINTR);
1521                 tasklet_schedule(&jme->pcc_task);
1522         }
1523
1524         if (intrstat & (INTR_PCCTXTO | INTR_PCCTX)) {
1525                 jwrite32(jme, JME_IEVE, INTR_PCCTXTO | INTR_PCCTX | INTR_TX0);
1526                 tasklet_schedule(&jme->txclean_task);
1527         }
1528
1529         if ((intrstat & (INTR_PCCRX0TO | INTR_PCCRX0 | INTR_RX0EMP))) {
1530                 jwrite32(jme, JME_IEVE, (intrstat & (INTR_PCCRX0TO |
1531                                                      INTR_PCCRX0 |
1532                                                      INTR_RX0EMP)) |
1533                                         INTR_RX0);
1534         }
1535
1536         if (test_bit(JME_FLAG_POLL, &jme->flags)) {
1537                 if (intrstat & INTR_RX0EMP)
1538                         atomic_inc(&jme->rx_empty);
1539
1540                 if ((intrstat & (INTR_PCCRX0TO | INTR_PCCRX0 | INTR_RX0EMP))) {
1541                         if (likely(JME_RX_SCHEDULE_PREP(jme))) {
1542                                 jme_polling_mode(jme);
1543                                 JME_RX_SCHEDULE(jme);
1544                         }
1545                 }
1546         } else {
1547                 if (intrstat & INTR_RX0EMP) {
1548                         atomic_inc(&jme->rx_empty);
1549                         tasklet_hi_schedule(&jme->rxempty_task);
1550                 } else if (intrstat & (INTR_PCCRX0TO | INTR_PCCRX0)) {
1551                         tasklet_hi_schedule(&jme->rxclean_task);
1552                 }
1553         }
1554
1555 out_reenable:
1556         /*
1557          * Re-enable interrupt
1558          */
1559         jwrite32f(jme, JME_IENS, INTR_ENABLE);
1560 }
1561
1562 static irqreturn_t
1563 jme_intr(int irq, void *dev_id)
1564 {
1565         struct net_device *netdev = dev_id;
1566         struct jme_adapter *jme = netdev_priv(netdev);
1567         u32 intrstat;
1568
1569         intrstat = jread32(jme, JME_IEVE);
1570
1571         /*
1572          * Check if it's really an interrupt for us
1573          */
1574         if (unlikely((intrstat & INTR_ENABLE) == 0))
1575                 return IRQ_NONE;
1576
1577         /*
1578          * Check if the device still exist
1579          */
1580         if (unlikely(intrstat == ~((typeof(intrstat))0)))
1581                 return IRQ_NONE;
1582
1583         jme_intr_msi(jme, intrstat);
1584
1585         return IRQ_HANDLED;
1586 }
1587
1588 static irqreturn_t
1589 jme_msi(int irq, void *dev_id)
1590 {
1591         struct net_device *netdev = dev_id;
1592         struct jme_adapter *jme = netdev_priv(netdev);
1593         u32 intrstat;
1594
1595         intrstat = jread32(jme, JME_IEVE);
1596
1597         jme_intr_msi(jme, intrstat);
1598
1599         return IRQ_HANDLED;
1600 }
1601
1602 static void
1603 jme_reset_link(struct jme_adapter *jme)
1604 {
1605         jwrite32(jme, JME_TMCSR, TMCSR_SWIT);
1606 }
1607
1608 static void
1609 jme_restart_an(struct jme_adapter *jme)
1610 {
1611         u32 bmcr;
1612
1613         spin_lock_bh(&jme->phy_lock);
1614         bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
1615         bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
1616         jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, bmcr);
1617         spin_unlock_bh(&jme->phy_lock);
1618 }
1619
1620 static int
1621 jme_request_irq(struct jme_adapter *jme)
1622 {
1623         int rc;
1624         struct net_device *netdev = jme->dev;
1625         irq_handler_t handler = jme_intr;
1626         int irq_flags = IRQF_SHARED;
1627
1628         if (!pci_enable_msi(jme->pdev)) {
1629                 set_bit(JME_FLAG_MSI, &jme->flags);
1630                 handler = jme_msi;
1631                 irq_flags = 0;
1632         }
1633
1634         rc = request_irq(jme->pdev->irq, handler, irq_flags, netdev->name,
1635                           netdev);
1636         if (rc) {
1637                 netdev_err(netdev,
1638                            "Unable to request %s interrupt (return: %d)\n",
1639                            test_bit(JME_FLAG_MSI, &jme->flags) ? "MSI" : "INTx",
1640                            rc);
1641
1642                 if (test_bit(JME_FLAG_MSI, &jme->flags)) {
1643                         pci_disable_msi(jme->pdev);
1644                         clear_bit(JME_FLAG_MSI, &jme->flags);
1645                 }
1646         } else {
1647                 netdev->irq = jme->pdev->irq;
1648         }
1649
1650         return rc;
1651 }
1652
1653 static void
1654 jme_free_irq(struct jme_adapter *jme)
1655 {
1656         free_irq(jme->pdev->irq, jme->dev);
1657         if (test_bit(JME_FLAG_MSI, &jme->flags)) {
1658                 pci_disable_msi(jme->pdev);
1659                 clear_bit(JME_FLAG_MSI, &jme->flags);
1660                 jme->dev->irq = jme->pdev->irq;
1661         }
1662 }
1663
1664 static inline void
1665 jme_new_phy_on(struct jme_adapter *jme)
1666 {
1667         u32 reg;
1668
1669         reg = jread32(jme, JME_PHY_PWR);
1670         reg &= ~(PHY_PWR_DWN1SEL | PHY_PWR_DWN1SW |
1671                  PHY_PWR_DWN2 | PHY_PWR_CLKSEL);
1672         jwrite32(jme, JME_PHY_PWR, reg);
1673
1674         pci_read_config_dword(jme->pdev, PCI_PRIV_PE1, &reg);
1675         reg &= ~PE1_GPREG0_PBG;
1676         reg |= PE1_GPREG0_ENBG;
1677         pci_write_config_dword(jme->pdev, PCI_PRIV_PE1, reg);
1678 }
1679
1680 static inline void
1681 jme_new_phy_off(struct jme_adapter *jme)
1682 {
1683         u32 reg;
1684
1685         reg = jread32(jme, JME_PHY_PWR);
1686         reg |= PHY_PWR_DWN1SEL | PHY_PWR_DWN1SW |
1687                PHY_PWR_DWN2 | PHY_PWR_CLKSEL;
1688         jwrite32(jme, JME_PHY_PWR, reg);
1689
1690         pci_read_config_dword(jme->pdev, PCI_PRIV_PE1, &reg);
1691         reg &= ~PE1_GPREG0_PBG;
1692         reg |= PE1_GPREG0_PDD3COLD;
1693         pci_write_config_dword(jme->pdev, PCI_PRIV_PE1, reg);
1694 }
1695
1696 static inline void
1697 jme_phy_on(struct jme_adapter *jme)
1698 {
1699         u32 bmcr;
1700
1701         bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
1702         bmcr &= ~BMCR_PDOWN;
1703         jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, bmcr);
1704
1705         if (new_phy_power_ctrl(jme->chip_main_rev))
1706                 jme_new_phy_on(jme);
1707 }
1708
1709 static inline void
1710 jme_phy_off(struct jme_adapter *jme)
1711 {
1712         u32 bmcr;
1713
1714         bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
1715         bmcr |= BMCR_PDOWN;
1716         jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, bmcr);
1717
1718         if (new_phy_power_ctrl(jme->chip_main_rev))
1719                 jme_new_phy_off(jme);
1720 }
1721
1722 static int
1723 jme_phy_specreg_read(struct jme_adapter *jme, u32 specreg)
1724 {
1725         u32 phy_addr;
1726
1727         phy_addr = JM_PHY_SPEC_REG_READ | specreg;
1728         jme_mdio_write(jme->dev, jme->mii_if.phy_id, JM_PHY_SPEC_ADDR_REG,
1729                         phy_addr);
1730         return jme_mdio_read(jme->dev, jme->mii_if.phy_id,
1731                         JM_PHY_SPEC_DATA_REG);
1732 }
1733
1734 static void
1735 jme_phy_specreg_write(struct jme_adapter *jme, u32 ext_reg, u32 phy_data)
1736 {
1737         u32 phy_addr;
1738
1739         phy_addr = JM_PHY_SPEC_REG_WRITE | ext_reg;
1740         jme_mdio_write(jme->dev, jme->mii_if.phy_id, JM_PHY_SPEC_DATA_REG,
1741                         phy_data);
1742         jme_mdio_write(jme->dev, jme->mii_if.phy_id, JM_PHY_SPEC_ADDR_REG,
1743                         phy_addr);
1744 }
1745
1746 static int
1747 jme_phy_calibration(struct jme_adapter *jme)
1748 {
1749         u32 ctrl1000, phy_data;
1750
1751         jme_phy_off(jme);
1752         jme_phy_on(jme);
1753         /*  Enabel PHY test mode 1 */
1754         ctrl1000 = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_CTRL1000);
1755         ctrl1000 &= ~PHY_GAD_TEST_MODE_MSK;
1756         ctrl1000 |= PHY_GAD_TEST_MODE_1;
1757         jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_CTRL1000, ctrl1000);
1758
1759         phy_data = jme_phy_specreg_read(jme, JM_PHY_EXT_COMM_2_REG);
1760         phy_data &= ~JM_PHY_EXT_COMM_2_CALI_MODE_0;
1761         phy_data |= JM_PHY_EXT_COMM_2_CALI_LATCH |
1762                         JM_PHY_EXT_COMM_2_CALI_ENABLE;
1763         jme_phy_specreg_write(jme, JM_PHY_EXT_COMM_2_REG, phy_data);
1764         msleep(20);
1765         phy_data = jme_phy_specreg_read(jme, JM_PHY_EXT_COMM_2_REG);
1766         phy_data &= ~(JM_PHY_EXT_COMM_2_CALI_ENABLE |
1767                         JM_PHY_EXT_COMM_2_CALI_MODE_0 |
1768                         JM_PHY_EXT_COMM_2_CALI_LATCH);
1769         jme_phy_specreg_write(jme, JM_PHY_EXT_COMM_2_REG, phy_data);
1770
1771         /*  Disable PHY test mode */
1772         ctrl1000 = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_CTRL1000);
1773         ctrl1000 &= ~PHY_GAD_TEST_MODE_MSK;
1774         jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_CTRL1000, ctrl1000);
1775         return 0;
1776 }
1777
1778 static int
1779 jme_phy_setEA(struct jme_adapter *jme)
1780 {
1781         u32 phy_comm0 = 0, phy_comm1 = 0;
1782         u8 nic_ctrl;
1783
1784         pci_read_config_byte(jme->pdev, PCI_PRIV_SHARE_NICCTRL, &nic_ctrl);
1785         if ((nic_ctrl & 0x3) == JME_FLAG_PHYEA_ENABLE)
1786                 return 0;
1787
1788         switch (jme->pdev->device) {
1789         case PCI_DEVICE_ID_JMICRON_JMC250:
1790                 if (((jme->chip_main_rev == 5) &&
1791                         ((jme->chip_sub_rev == 0) || (jme->chip_sub_rev == 1) ||
1792                         (jme->chip_sub_rev == 3))) ||
1793                         (jme->chip_main_rev >= 6)) {
1794                         phy_comm0 = 0x008A;
1795                         phy_comm1 = 0x4109;
1796                 }
1797                 if ((jme->chip_main_rev == 3) &&
1798                         ((jme->chip_sub_rev == 1) || (jme->chip_sub_rev == 2)))
1799                         phy_comm0 = 0xE088;
1800                 break;
1801         case PCI_DEVICE_ID_JMICRON_JMC260:
1802                 if (((jme->chip_main_rev == 5) &&
1803                         ((jme->chip_sub_rev == 0) || (jme->chip_sub_rev == 1) ||
1804                         (jme->chip_sub_rev == 3))) ||
1805                         (jme->chip_main_rev >= 6)) {
1806                         phy_comm0 = 0x008A;
1807                         phy_comm1 = 0x4109;
1808                 }
1809                 if ((jme->chip_main_rev == 3) &&
1810                         ((jme->chip_sub_rev == 1) || (jme->chip_sub_rev == 2)))
1811                         phy_comm0 = 0xE088;
1812                 if ((jme->chip_main_rev == 2) && (jme->chip_sub_rev == 0))
1813                         phy_comm0 = 0x608A;
1814                 if ((jme->chip_main_rev == 2) && (jme->chip_sub_rev == 2))
1815                         phy_comm0 = 0x408A;
1816                 break;
1817         default:
1818                 return -ENODEV;
1819         }
1820         if (phy_comm0)
1821                 jme_phy_specreg_write(jme, JM_PHY_EXT_COMM_0_REG, phy_comm0);
1822         if (phy_comm1)
1823                 jme_phy_specreg_write(jme, JM_PHY_EXT_COMM_1_REG, phy_comm1);
1824
1825         return 0;
1826 }
1827
1828 static int
1829 jme_open(struct net_device *netdev)
1830 {
1831         struct jme_adapter *jme = netdev_priv(netdev);
1832         int rc;
1833
1834         jme_clear_pm_disable_wol(jme);
1835         JME_NAPI_ENABLE(jme);
1836
1837         tasklet_init(&jme->linkch_task, jme_link_change_tasklet,
1838                      (unsigned long) jme);
1839         tasklet_init(&jme->txclean_task, jme_tx_clean_tasklet,
1840                      (unsigned long) jme);
1841         tasklet_init(&jme->rxclean_task, jme_rx_clean_tasklet,
1842                      (unsigned long) jme);
1843         tasklet_init(&jme->rxempty_task, jme_rx_empty_tasklet,
1844                      (unsigned long) jme);
1845
1846         rc = jme_request_irq(jme);
1847         if (rc)
1848                 goto err_out;
1849
1850         jme_start_irq(jme);
1851
1852         jme_phy_on(jme);
1853         if (test_bit(JME_FLAG_SSET, &jme->flags))
1854                 jme_set_link_ksettings(netdev, &jme->old_cmd);
1855         else
1856                 jme_reset_phy_processor(jme);
1857         jme_phy_calibration(jme);
1858         jme_phy_setEA(jme);
1859         jme_reset_link(jme);
1860
1861         return 0;
1862
1863 err_out:
1864         netif_stop_queue(netdev);
1865         netif_carrier_off(netdev);
1866         return rc;
1867 }
1868
1869 static void
1870 jme_set_100m_half(struct jme_adapter *jme)
1871 {
1872         u32 bmcr, tmp;
1873
1874         jme_phy_on(jme);
1875         bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
1876         tmp = bmcr & ~(BMCR_ANENABLE | BMCR_SPEED100 |
1877                        BMCR_SPEED1000 | BMCR_FULLDPLX);
1878         tmp |= BMCR_SPEED100;
1879
1880         if (bmcr != tmp)
1881                 jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, tmp);
1882
1883         if (jme->fpgaver)
1884                 jwrite32(jme, JME_GHC, GHC_SPEED_100M | GHC_LINK_POLL);
1885         else
1886                 jwrite32(jme, JME_GHC, GHC_SPEED_100M);
1887 }
1888
1889 #define JME_WAIT_LINK_TIME 2000 /* 2000ms */
1890 static void
1891 jme_wait_link(struct jme_adapter *jme)
1892 {
1893         u32 phylink, to = JME_WAIT_LINK_TIME;
1894
1895         msleep(1000);
1896         phylink = jme_linkstat_from_phy(jme);
1897         while (!(phylink & PHY_LINK_UP) && (to -= 10) > 0) {
1898                 usleep_range(10000, 11000);
1899                 phylink = jme_linkstat_from_phy(jme);
1900         }
1901 }
1902
1903 static void
1904 jme_powersave_phy(struct jme_adapter *jme)
1905 {
1906         if (jme->reg_pmcs && device_may_wakeup(&jme->pdev->dev)) {
1907                 jme_set_100m_half(jme);
1908                 if (jme->reg_pmcs & (PMCS_LFEN | PMCS_LREN))
1909                         jme_wait_link(jme);
1910                 jme_clear_pm_enable_wol(jme);
1911         } else {
1912                 jme_phy_off(jme);
1913         }
1914 }
1915
1916 static int
1917 jme_close(struct net_device *netdev)
1918 {
1919         struct jme_adapter *jme = netdev_priv(netdev);
1920
1921         netif_stop_queue(netdev);
1922         netif_carrier_off(netdev);
1923
1924         jme_stop_irq(jme);
1925         jme_free_irq(jme);
1926
1927         JME_NAPI_DISABLE(jme);
1928
1929         tasklet_kill(&jme->linkch_task);
1930         tasklet_kill(&jme->txclean_task);
1931         tasklet_kill(&jme->rxclean_task);
1932         tasklet_kill(&jme->rxempty_task);
1933
1934         jme_disable_rx_engine(jme);
1935         jme_disable_tx_engine(jme);
1936         jme_reset_mac_processor(jme);
1937         jme_free_rx_resources(jme);
1938         jme_free_tx_resources(jme);
1939         jme->phylink = 0;
1940         jme_phy_off(jme);
1941
1942         return 0;
1943 }
1944
1945 static int
1946 jme_alloc_txdesc(struct jme_adapter *jme,
1947                         struct sk_buff *skb)
1948 {
1949         struct jme_ring *txring = &(jme->txring[0]);
1950         int idx, nr_alloc, mask = jme->tx_ring_mask;
1951
1952         idx = txring->next_to_use;
1953         nr_alloc = skb_shinfo(skb)->nr_frags + 2;
1954
1955         if (unlikely(atomic_read(&txring->nr_free) < nr_alloc))
1956                 return -1;
1957
1958         atomic_sub(nr_alloc, &txring->nr_free);
1959
1960         txring->next_to_use = (txring->next_to_use + nr_alloc) & mask;
1961
1962         return idx;
1963 }
1964
1965 static int
1966 jme_fill_tx_map(struct pci_dev *pdev,
1967                 struct txdesc *txdesc,
1968                 struct jme_buffer_info *txbi,
1969                 struct page *page,
1970                 u32 page_offset,
1971                 u32 len,
1972                 bool hidma)
1973 {
1974         dma_addr_t dmaaddr;
1975
1976         dmaaddr = pci_map_page(pdev,
1977                                 page,
1978                                 page_offset,
1979                                 len,
1980                                 PCI_DMA_TODEVICE);
1981
1982         if (unlikely(pci_dma_mapping_error(pdev, dmaaddr)))
1983                 return -EINVAL;
1984
1985         pci_dma_sync_single_for_device(pdev,
1986                                        dmaaddr,
1987                                        len,
1988                                        PCI_DMA_TODEVICE);
1989
1990         txdesc->dw[0] = 0;
1991         txdesc->dw[1] = 0;
1992         txdesc->desc2.flags     = TXFLAG_OWN;
1993         txdesc->desc2.flags     |= (hidma) ? TXFLAG_64BIT : 0;
1994         txdesc->desc2.datalen   = cpu_to_le16(len);
1995         txdesc->desc2.bufaddrh  = cpu_to_le32((__u64)dmaaddr >> 32);
1996         txdesc->desc2.bufaddrl  = cpu_to_le32(
1997                                         (__u64)dmaaddr & 0xFFFFFFFFUL);
1998
1999         txbi->mapping = dmaaddr;
2000         txbi->len = len;
2001         return 0;
2002 }
2003
2004 static void jme_drop_tx_map(struct jme_adapter *jme, int startidx, int count)
2005 {
2006         struct jme_ring *txring = &(jme->txring[0]);
2007         struct jme_buffer_info *txbi = txring->bufinf, *ctxbi;
2008         int mask = jme->tx_ring_mask;
2009         int j;
2010
2011         for (j = 0 ; j < count ; j++) {
2012                 ctxbi = txbi + ((startidx + j + 2) & (mask));
2013                 pci_unmap_page(jme->pdev,
2014                                 ctxbi->mapping,
2015                                 ctxbi->len,
2016                                 PCI_DMA_TODEVICE);
2017
2018                 ctxbi->mapping = 0;
2019                 ctxbi->len = 0;
2020         }
2021 }
2022
2023 static int
2024 jme_map_tx_skb(struct jme_adapter *jme, struct sk_buff *skb, int idx)
2025 {
2026         struct jme_ring *txring = &(jme->txring[0]);
2027         struct txdesc *txdesc = txring->desc, *ctxdesc;
2028         struct jme_buffer_info *txbi = txring->bufinf, *ctxbi;
2029         bool hidma = jme->dev->features & NETIF_F_HIGHDMA;
2030         int i, nr_frags = skb_shinfo(skb)->nr_frags;
2031         int mask = jme->tx_ring_mask;
2032         u32 len;
2033         int ret = 0;
2034
2035         for (i = 0 ; i < nr_frags ; ++i) {
2036                 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
2037
2038                 ctxdesc = txdesc + ((idx + i + 2) & (mask));
2039                 ctxbi = txbi + ((idx + i + 2) & (mask));
2040
2041                 ret = jme_fill_tx_map(jme->pdev, ctxdesc, ctxbi,
2042                                       skb_frag_page(frag), skb_frag_off(frag),
2043                                       skb_frag_size(frag), hidma);
2044                 if (ret) {
2045                         jme_drop_tx_map(jme, idx, i);
2046                         goto out;
2047                 }
2048         }
2049
2050         len = skb_is_nonlinear(skb) ? skb_headlen(skb) : skb->len;
2051         ctxdesc = txdesc + ((idx + 1) & (mask));
2052         ctxbi = txbi + ((idx + 1) & (mask));
2053         ret = jme_fill_tx_map(jme->pdev, ctxdesc, ctxbi, virt_to_page(skb->data),
2054                         offset_in_page(skb->data), len, hidma);
2055         if (ret)
2056                 jme_drop_tx_map(jme, idx, i);
2057
2058 out:
2059         return ret;
2060
2061 }
2062
2063
2064 static int
2065 jme_tx_tso(struct sk_buff *skb, __le16 *mss, u8 *flags)
2066 {
2067         *mss = cpu_to_le16(skb_shinfo(skb)->gso_size << TXDESC_MSS_SHIFT);
2068         if (*mss) {
2069                 *flags |= TXFLAG_LSEN;
2070
2071                 if (skb->protocol == htons(ETH_P_IP)) {
2072                         struct iphdr *iph = ip_hdr(skb);
2073
2074                         iph->check = 0;
2075                         tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
2076                                                                 iph->daddr, 0,
2077                                                                 IPPROTO_TCP,
2078                                                                 0);
2079                 } else {
2080                         tcp_v6_gso_csum_prep(skb);
2081                 }
2082
2083                 return 0;
2084         }
2085
2086         return 1;
2087 }
2088
2089 static void
2090 jme_tx_csum(struct jme_adapter *jme, struct sk_buff *skb, u8 *flags)
2091 {
2092         if (skb->ip_summed == CHECKSUM_PARTIAL) {
2093                 u8 ip_proto;
2094
2095                 switch (skb->protocol) {
2096                 case htons(ETH_P_IP):
2097                         ip_proto = ip_hdr(skb)->protocol;
2098                         break;
2099                 case htons(ETH_P_IPV6):
2100                         ip_proto = ipv6_hdr(skb)->nexthdr;
2101                         break;
2102                 default:
2103                         ip_proto = 0;
2104                         break;
2105                 }
2106
2107                 switch (ip_proto) {
2108                 case IPPROTO_TCP:
2109                         *flags |= TXFLAG_TCPCS;
2110                         break;
2111                 case IPPROTO_UDP:
2112                         *flags |= TXFLAG_UDPCS;
2113                         break;
2114                 default:
2115                         netif_err(jme, tx_err, jme->dev, "Error upper layer protocol\n");
2116                         break;
2117                 }
2118         }
2119 }
2120
2121 static inline void
2122 jme_tx_vlan(struct sk_buff *skb, __le16 *vlan, u8 *flags)
2123 {
2124         if (skb_vlan_tag_present(skb)) {
2125                 *flags |= TXFLAG_TAGON;
2126                 *vlan = cpu_to_le16(skb_vlan_tag_get(skb));
2127         }
2128 }
2129
2130 static int
2131 jme_fill_tx_desc(struct jme_adapter *jme, struct sk_buff *skb, int idx)
2132 {
2133         struct jme_ring *txring = &(jme->txring[0]);
2134         struct txdesc *txdesc;
2135         struct jme_buffer_info *txbi;
2136         u8 flags;
2137         int ret = 0;
2138
2139         txdesc = (struct txdesc *)txring->desc + idx;
2140         txbi = txring->bufinf + idx;
2141
2142         txdesc->dw[0] = 0;
2143         txdesc->dw[1] = 0;
2144         txdesc->dw[2] = 0;
2145         txdesc->dw[3] = 0;
2146         txdesc->desc1.pktsize = cpu_to_le16(skb->len);
2147         /*
2148          * Set OWN bit at final.
2149          * When kernel transmit faster than NIC.
2150          * And NIC trying to send this descriptor before we tell
2151          * it to start sending this TX queue.
2152          * Other fields are already filled correctly.
2153          */
2154         wmb();
2155         flags = TXFLAG_OWN | TXFLAG_INT;
2156         /*
2157          * Set checksum flags while not tso
2158          */
2159         if (jme_tx_tso(skb, &txdesc->desc1.mss, &flags))
2160                 jme_tx_csum(jme, skb, &flags);
2161         jme_tx_vlan(skb, &txdesc->desc1.vlan, &flags);
2162         ret = jme_map_tx_skb(jme, skb, idx);
2163         if (ret)
2164                 return ret;
2165
2166         txdesc->desc1.flags = flags;
2167         /*
2168          * Set tx buffer info after telling NIC to send
2169          * For better tx_clean timing
2170          */
2171         wmb();
2172         txbi->nr_desc = skb_shinfo(skb)->nr_frags + 2;
2173         txbi->skb = skb;
2174         txbi->len = skb->len;
2175         txbi->start_xmit = jiffies;
2176         if (!txbi->start_xmit)
2177                 txbi->start_xmit = (0UL-1);
2178
2179         return 0;
2180 }
2181
2182 static void
2183 jme_stop_queue_if_full(struct jme_adapter *jme)
2184 {
2185         struct jme_ring *txring = &(jme->txring[0]);
2186         struct jme_buffer_info *txbi = txring->bufinf;
2187         int idx = atomic_read(&txring->next_to_clean);
2188
2189         txbi += idx;
2190
2191         smp_wmb();
2192         if (unlikely(atomic_read(&txring->nr_free) < (MAX_SKB_FRAGS+2))) {
2193                 netif_stop_queue(jme->dev);
2194                 netif_info(jme, tx_queued, jme->dev, "TX Queue Paused\n");
2195                 smp_wmb();
2196                 if (atomic_read(&txring->nr_free)
2197                         >= (jme->tx_wake_threshold)) {
2198                         netif_wake_queue(jme->dev);
2199                         netif_info(jme, tx_queued, jme->dev, "TX Queue Fast Waked\n");
2200                 }
2201         }
2202
2203         if (unlikely(txbi->start_xmit &&
2204                         (jiffies - txbi->start_xmit) >= TX_TIMEOUT &&
2205                         txbi->skb)) {
2206                 netif_stop_queue(jme->dev);
2207                 netif_info(jme, tx_queued, jme->dev,
2208                            "TX Queue Stopped %d@%lu\n", idx, jiffies);
2209         }
2210 }
2211
2212 /*
2213  * This function is already protected by netif_tx_lock()
2214  */
2215
2216 static netdev_tx_t
2217 jme_start_xmit(struct sk_buff *skb, struct net_device *netdev)
2218 {
2219         struct jme_adapter *jme = netdev_priv(netdev);
2220         int idx;
2221
2222         if (unlikely(skb_is_gso(skb) && skb_cow_head(skb, 0))) {
2223                 dev_kfree_skb_any(skb);
2224                 ++(NET_STAT(jme).tx_dropped);
2225                 return NETDEV_TX_OK;
2226         }
2227
2228         idx = jme_alloc_txdesc(jme, skb);
2229
2230         if (unlikely(idx < 0)) {
2231                 netif_stop_queue(netdev);
2232                 netif_err(jme, tx_err, jme->dev,
2233                           "BUG! Tx ring full when queue awake!\n");
2234
2235                 return NETDEV_TX_BUSY;
2236         }
2237
2238         if (jme_fill_tx_desc(jme, skb, idx))
2239                 return NETDEV_TX_OK;
2240
2241         jwrite32(jme, JME_TXCS, jme->reg_txcs |
2242                                 TXCS_SELECT_QUEUE0 |
2243                                 TXCS_QUEUE0S |
2244                                 TXCS_ENABLE);
2245
2246         tx_dbg(jme, "xmit: %d+%d@%lu\n",
2247                idx, skb_shinfo(skb)->nr_frags + 2, jiffies);
2248         jme_stop_queue_if_full(jme);
2249
2250         return NETDEV_TX_OK;
2251 }
2252
2253 static void
2254 jme_set_unicastaddr(struct net_device *netdev)
2255 {
2256         struct jme_adapter *jme = netdev_priv(netdev);
2257         u32 val;
2258
2259         val = (netdev->dev_addr[3] & 0xff) << 24 |
2260               (netdev->dev_addr[2] & 0xff) << 16 |
2261               (netdev->dev_addr[1] & 0xff) <<  8 |
2262               (netdev->dev_addr[0] & 0xff);
2263         jwrite32(jme, JME_RXUMA_LO, val);
2264         val = (netdev->dev_addr[5] & 0xff) << 8 |
2265               (netdev->dev_addr[4] & 0xff);
2266         jwrite32(jme, JME_RXUMA_HI, val);
2267 }
2268
2269 static int
2270 jme_set_macaddr(struct net_device *netdev, void *p)
2271 {
2272         struct jme_adapter *jme = netdev_priv(netdev);
2273         struct sockaddr *addr = p;
2274
2275         if (netif_running(netdev))
2276                 return -EBUSY;
2277
2278         spin_lock_bh(&jme->macaddr_lock);
2279         memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
2280         jme_set_unicastaddr(netdev);
2281         spin_unlock_bh(&jme->macaddr_lock);
2282
2283         return 0;
2284 }
2285
2286 static void
2287 jme_set_multi(struct net_device *netdev)
2288 {
2289         struct jme_adapter *jme = netdev_priv(netdev);
2290         u32 mc_hash[2] = {};
2291
2292         spin_lock_bh(&jme->rxmcs_lock);
2293
2294         jme->reg_rxmcs |= RXMCS_BRDFRAME | RXMCS_UNIFRAME;
2295
2296         if (netdev->flags & IFF_PROMISC) {
2297                 jme->reg_rxmcs |= RXMCS_ALLFRAME;
2298         } else if (netdev->flags & IFF_ALLMULTI) {
2299                 jme->reg_rxmcs |= RXMCS_ALLMULFRAME;
2300         } else if (netdev->flags & IFF_MULTICAST) {
2301                 struct netdev_hw_addr *ha;
2302                 int bit_nr;
2303
2304                 jme->reg_rxmcs |= RXMCS_MULFRAME | RXMCS_MULFILTERED;
2305                 netdev_for_each_mc_addr(ha, netdev) {
2306                         bit_nr = ether_crc(ETH_ALEN, ha->addr) & 0x3F;
2307                         mc_hash[bit_nr >> 5] |= 1 << (bit_nr & 0x1F);
2308                 }
2309
2310                 jwrite32(jme, JME_RXMCHT_LO, mc_hash[0]);
2311                 jwrite32(jme, JME_RXMCHT_HI, mc_hash[1]);
2312         }
2313
2314         wmb();
2315         jwrite32(jme, JME_RXMCS, jme->reg_rxmcs);
2316
2317         spin_unlock_bh(&jme->rxmcs_lock);
2318 }
2319
2320 static int
2321 jme_change_mtu(struct net_device *netdev, int new_mtu)
2322 {
2323         struct jme_adapter *jme = netdev_priv(netdev);
2324
2325         netdev->mtu = new_mtu;
2326         netdev_update_features(netdev);
2327
2328         jme_restart_rx_engine(jme);
2329         jme_reset_link(jme);
2330
2331         return 0;
2332 }
2333
2334 static void
2335 jme_tx_timeout(struct net_device *netdev, unsigned int txqueue)
2336 {
2337         struct jme_adapter *jme = netdev_priv(netdev);
2338
2339         jme->phylink = 0;
2340         jme_reset_phy_processor(jme);
2341         if (test_bit(JME_FLAG_SSET, &jme->flags))
2342                 jme_set_link_ksettings(netdev, &jme->old_cmd);
2343
2344         /*
2345          * Force to Reset the link again
2346          */
2347         jme_reset_link(jme);
2348 }
2349
2350 static void
2351 jme_get_drvinfo(struct net_device *netdev,
2352                      struct ethtool_drvinfo *info)
2353 {
2354         struct jme_adapter *jme = netdev_priv(netdev);
2355
2356         strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
2357         strlcpy(info->version, DRV_VERSION, sizeof(info->version));
2358         strlcpy(info->bus_info, pci_name(jme->pdev), sizeof(info->bus_info));
2359 }
2360
2361 static int
2362 jme_get_regs_len(struct net_device *netdev)
2363 {
2364         return JME_REG_LEN;
2365 }
2366
2367 static void
2368 mmapio_memcpy(struct jme_adapter *jme, u32 *p, u32 reg, int len)
2369 {
2370         int i;
2371
2372         for (i = 0 ; i < len ; i += 4)
2373                 p[i >> 2] = jread32(jme, reg + i);
2374 }
2375
2376 static void
2377 mdio_memcpy(struct jme_adapter *jme, u32 *p, int reg_nr)
2378 {
2379         int i;
2380         u16 *p16 = (u16 *)p;
2381
2382         for (i = 0 ; i < reg_nr ; ++i)
2383                 p16[i] = jme_mdio_read(jme->dev, jme->mii_if.phy_id, i);
2384 }
2385
2386 static void
2387 jme_get_regs(struct net_device *netdev, struct ethtool_regs *regs, void *p)
2388 {
2389         struct jme_adapter *jme = netdev_priv(netdev);
2390         u32 *p32 = (u32 *)p;
2391
2392         memset(p, 0xFF, JME_REG_LEN);
2393
2394         regs->version = 1;
2395         mmapio_memcpy(jme, p32, JME_MAC, JME_MAC_LEN);
2396
2397         p32 += 0x100 >> 2;
2398         mmapio_memcpy(jme, p32, JME_PHY, JME_PHY_LEN);
2399
2400         p32 += 0x100 >> 2;
2401         mmapio_memcpy(jme, p32, JME_MISC, JME_MISC_LEN);
2402
2403         p32 += 0x100 >> 2;
2404         mmapio_memcpy(jme, p32, JME_RSS, JME_RSS_LEN);
2405
2406         p32 += 0x100 >> 2;
2407         mdio_memcpy(jme, p32, JME_PHY_REG_NR);
2408 }
2409
2410 static int
2411 jme_get_coalesce(struct net_device *netdev, struct ethtool_coalesce *ecmd)
2412 {
2413         struct jme_adapter *jme = netdev_priv(netdev);
2414
2415         ecmd->tx_coalesce_usecs = PCC_TX_TO;
2416         ecmd->tx_max_coalesced_frames = PCC_TX_CNT;
2417
2418         if (test_bit(JME_FLAG_POLL, &jme->flags)) {
2419                 ecmd->use_adaptive_rx_coalesce = false;
2420                 ecmd->rx_coalesce_usecs = 0;
2421                 ecmd->rx_max_coalesced_frames = 0;
2422                 return 0;
2423         }
2424
2425         ecmd->use_adaptive_rx_coalesce = true;
2426
2427         switch (jme->dpi.cur) {
2428         case PCC_P1:
2429                 ecmd->rx_coalesce_usecs = PCC_P1_TO;
2430                 ecmd->rx_max_coalesced_frames = PCC_P1_CNT;
2431                 break;
2432         case PCC_P2:
2433                 ecmd->rx_coalesce_usecs = PCC_P2_TO;
2434                 ecmd->rx_max_coalesced_frames = PCC_P2_CNT;
2435                 break;
2436         case PCC_P3:
2437                 ecmd->rx_coalesce_usecs = PCC_P3_TO;
2438                 ecmd->rx_max_coalesced_frames = PCC_P3_CNT;
2439                 break;
2440         default:
2441                 break;
2442         }
2443
2444         return 0;
2445 }
2446
2447 static int
2448 jme_set_coalesce(struct net_device *netdev, struct ethtool_coalesce *ecmd)
2449 {
2450         struct jme_adapter *jme = netdev_priv(netdev);
2451         struct dynpcc_info *dpi = &(jme->dpi);
2452
2453         if (netif_running(netdev))
2454                 return -EBUSY;
2455
2456         if (ecmd->use_adaptive_rx_coalesce &&
2457             test_bit(JME_FLAG_POLL, &jme->flags)) {
2458                 clear_bit(JME_FLAG_POLL, &jme->flags);
2459                 jme->jme_rx = netif_rx;
2460                 dpi->cur                = PCC_P1;
2461                 dpi->attempt            = PCC_P1;
2462                 dpi->cnt                = 0;
2463                 jme_set_rx_pcc(jme, PCC_P1);
2464                 jme_interrupt_mode(jme);
2465         } else if (!(ecmd->use_adaptive_rx_coalesce) &&
2466                    !(test_bit(JME_FLAG_POLL, &jme->flags))) {
2467                 set_bit(JME_FLAG_POLL, &jme->flags);
2468                 jme->jme_rx = netif_receive_skb;
2469                 jme_interrupt_mode(jme);
2470         }
2471
2472         return 0;
2473 }
2474
2475 static void
2476 jme_get_pauseparam(struct net_device *netdev,
2477                         struct ethtool_pauseparam *ecmd)
2478 {
2479         struct jme_adapter *jme = netdev_priv(netdev);
2480         u32 val;
2481
2482         ecmd->tx_pause = (jme->reg_txpfc & TXPFC_PF_EN) != 0;
2483         ecmd->rx_pause = (jme->reg_rxmcs & RXMCS_FLOWCTRL) != 0;
2484
2485         spin_lock_bh(&jme->phy_lock);
2486         val = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_ADVERTISE);
2487         spin_unlock_bh(&jme->phy_lock);
2488
2489         ecmd->autoneg =
2490                 (val & (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM)) != 0;
2491 }
2492
2493 static int
2494 jme_set_pauseparam(struct net_device *netdev,
2495                         struct ethtool_pauseparam *ecmd)
2496 {
2497         struct jme_adapter *jme = netdev_priv(netdev);
2498         u32 val;
2499
2500         if (((jme->reg_txpfc & TXPFC_PF_EN) != 0) ^
2501                 (ecmd->tx_pause != 0)) {
2502
2503                 if (ecmd->tx_pause)
2504                         jme->reg_txpfc |= TXPFC_PF_EN;
2505                 else
2506                         jme->reg_txpfc &= ~TXPFC_PF_EN;
2507
2508                 jwrite32(jme, JME_TXPFC, jme->reg_txpfc);
2509         }
2510
2511         spin_lock_bh(&jme->rxmcs_lock);
2512         if (((jme->reg_rxmcs & RXMCS_FLOWCTRL) != 0) ^
2513                 (ecmd->rx_pause != 0)) {
2514
2515                 if (ecmd->rx_pause)
2516                         jme->reg_rxmcs |= RXMCS_FLOWCTRL;
2517                 else
2518                         jme->reg_rxmcs &= ~RXMCS_FLOWCTRL;
2519
2520                 jwrite32(jme, JME_RXMCS, jme->reg_rxmcs);
2521         }
2522         spin_unlock_bh(&jme->rxmcs_lock);
2523
2524         spin_lock_bh(&jme->phy_lock);
2525         val = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_ADVERTISE);
2526         if (((val & (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM)) != 0) ^
2527                 (ecmd->autoneg != 0)) {
2528
2529                 if (ecmd->autoneg)
2530                         val |= (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
2531                 else
2532                         val &= ~(ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
2533
2534                 jme_mdio_write(jme->dev, jme->mii_if.phy_id,
2535                                 MII_ADVERTISE, val);
2536         }
2537         spin_unlock_bh(&jme->phy_lock);
2538
2539         return 0;
2540 }
2541
2542 static void
2543 jme_get_wol(struct net_device *netdev,
2544                 struct ethtool_wolinfo *wol)
2545 {
2546         struct jme_adapter *jme = netdev_priv(netdev);
2547
2548         wol->supported = WAKE_MAGIC | WAKE_PHY;
2549
2550         wol->wolopts = 0;
2551
2552         if (jme->reg_pmcs & (PMCS_LFEN | PMCS_LREN))
2553                 wol->wolopts |= WAKE_PHY;
2554
2555         if (jme->reg_pmcs & PMCS_MFEN)
2556                 wol->wolopts |= WAKE_MAGIC;
2557
2558 }
2559
2560 static int
2561 jme_set_wol(struct net_device *netdev,
2562                 struct ethtool_wolinfo *wol)
2563 {
2564         struct jme_adapter *jme = netdev_priv(netdev);
2565
2566         if (wol->wolopts & (WAKE_MAGICSECURE |
2567                                 WAKE_UCAST |
2568                                 WAKE_MCAST |
2569                                 WAKE_BCAST |
2570                                 WAKE_ARP))
2571                 return -EOPNOTSUPP;
2572
2573         jme->reg_pmcs = 0;
2574
2575         if (wol->wolopts & WAKE_PHY)
2576                 jme->reg_pmcs |= PMCS_LFEN | PMCS_LREN;
2577
2578         if (wol->wolopts & WAKE_MAGIC)
2579                 jme->reg_pmcs |= PMCS_MFEN;
2580
2581         return 0;
2582 }
2583
2584 static int
2585 jme_get_link_ksettings(struct net_device *netdev,
2586                        struct ethtool_link_ksettings *cmd)
2587 {
2588         struct jme_adapter *jme = netdev_priv(netdev);
2589
2590         spin_lock_bh(&jme->phy_lock);
2591         mii_ethtool_get_link_ksettings(&jme->mii_if, cmd);
2592         spin_unlock_bh(&jme->phy_lock);
2593         return 0;
2594 }
2595
2596 static int
2597 jme_set_link_ksettings(struct net_device *netdev,
2598                        const struct ethtool_link_ksettings *cmd)
2599 {
2600         struct jme_adapter *jme = netdev_priv(netdev);
2601         int rc, fdc = 0;
2602
2603         if (cmd->base.speed == SPEED_1000 &&
2604             cmd->base.autoneg != AUTONEG_ENABLE)
2605                 return -EINVAL;
2606
2607         /*
2608          * Check If user changed duplex only while force_media.
2609          * Hardware would not generate link change interrupt.
2610          */
2611         if (jme->mii_if.force_media &&
2612             cmd->base.autoneg != AUTONEG_ENABLE &&
2613             (jme->mii_if.full_duplex != cmd->base.duplex))
2614                 fdc = 1;
2615
2616         spin_lock_bh(&jme->phy_lock);
2617         rc = mii_ethtool_set_link_ksettings(&jme->mii_if, cmd);
2618         spin_unlock_bh(&jme->phy_lock);
2619
2620         if (!rc) {
2621                 if (fdc)
2622                         jme_reset_link(jme);
2623                 jme->old_cmd = *cmd;
2624                 set_bit(JME_FLAG_SSET, &jme->flags);
2625         }
2626
2627         return rc;
2628 }
2629
2630 static int
2631 jme_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd)
2632 {
2633         int rc;
2634         struct jme_adapter *jme = netdev_priv(netdev);
2635         struct mii_ioctl_data *mii_data = if_mii(rq);
2636         unsigned int duplex_chg;
2637
2638         if (cmd == SIOCSMIIREG) {
2639                 u16 val = mii_data->val_in;
2640                 if (!(val & (BMCR_RESET|BMCR_ANENABLE)) &&
2641                     (val & BMCR_SPEED1000))
2642                         return -EINVAL;
2643         }
2644
2645         spin_lock_bh(&jme->phy_lock);
2646         rc = generic_mii_ioctl(&jme->mii_if, mii_data, cmd, &duplex_chg);
2647         spin_unlock_bh(&jme->phy_lock);
2648
2649         if (!rc && (cmd == SIOCSMIIREG)) {
2650                 if (duplex_chg)
2651                         jme_reset_link(jme);
2652                 jme_get_link_ksettings(netdev, &jme->old_cmd);
2653                 set_bit(JME_FLAG_SSET, &jme->flags);
2654         }
2655
2656         return rc;
2657 }
2658
2659 static u32
2660 jme_get_link(struct net_device *netdev)
2661 {
2662         struct jme_adapter *jme = netdev_priv(netdev);
2663         return jread32(jme, JME_PHY_LINK) & PHY_LINK_UP;
2664 }
2665
2666 static u32
2667 jme_get_msglevel(struct net_device *netdev)
2668 {
2669         struct jme_adapter *jme = netdev_priv(netdev);
2670         return jme->msg_enable;
2671 }
2672
2673 static void
2674 jme_set_msglevel(struct net_device *netdev, u32 value)
2675 {
2676         struct jme_adapter *jme = netdev_priv(netdev);
2677         jme->msg_enable = value;
2678 }
2679
2680 static netdev_features_t
2681 jme_fix_features(struct net_device *netdev, netdev_features_t features)
2682 {
2683         if (netdev->mtu > 1900)
2684                 features &= ~(NETIF_F_ALL_TSO | NETIF_F_CSUM_MASK);
2685         return features;
2686 }
2687
2688 static int
2689 jme_set_features(struct net_device *netdev, netdev_features_t features)
2690 {
2691         struct jme_adapter *jme = netdev_priv(netdev);
2692
2693         spin_lock_bh(&jme->rxmcs_lock);
2694         if (features & NETIF_F_RXCSUM)
2695                 jme->reg_rxmcs |= RXMCS_CHECKSUM;
2696         else
2697                 jme->reg_rxmcs &= ~RXMCS_CHECKSUM;
2698         jwrite32(jme, JME_RXMCS, jme->reg_rxmcs);
2699         spin_unlock_bh(&jme->rxmcs_lock);
2700
2701         return 0;
2702 }
2703
2704 #ifdef CONFIG_NET_POLL_CONTROLLER
2705 static void jme_netpoll(struct net_device *dev)
2706 {
2707         unsigned long flags;
2708
2709         local_irq_save(flags);
2710         jme_intr(dev->irq, dev);
2711         local_irq_restore(flags);
2712 }
2713 #endif
2714
2715 static int
2716 jme_nway_reset(struct net_device *netdev)
2717 {
2718         struct jme_adapter *jme = netdev_priv(netdev);
2719         jme_restart_an(jme);
2720         return 0;
2721 }
2722
2723 static u8
2724 jme_smb_read(struct jme_adapter *jme, unsigned int addr)
2725 {
2726         u32 val;
2727         int to;
2728
2729         val = jread32(jme, JME_SMBCSR);
2730         to = JME_SMB_BUSY_TIMEOUT;
2731         while ((val & SMBCSR_BUSY) && --to) {
2732                 msleep(1);
2733                 val = jread32(jme, JME_SMBCSR);
2734         }
2735         if (!to) {
2736                 netif_err(jme, hw, jme->dev, "SMB Bus Busy\n");
2737                 return 0xFF;
2738         }
2739
2740         jwrite32(jme, JME_SMBINTF,
2741                 ((addr << SMBINTF_HWADDR_SHIFT) & SMBINTF_HWADDR) |
2742                 SMBINTF_HWRWN_READ |
2743                 SMBINTF_HWCMD);
2744
2745         val = jread32(jme, JME_SMBINTF);
2746         to = JME_SMB_BUSY_TIMEOUT;
2747         while ((val & SMBINTF_HWCMD) && --to) {
2748                 msleep(1);
2749                 val = jread32(jme, JME_SMBINTF);
2750         }
2751         if (!to) {
2752                 netif_err(jme, hw, jme->dev, "SMB Bus Busy\n");
2753                 return 0xFF;
2754         }
2755
2756         return (val & SMBINTF_HWDATR) >> SMBINTF_HWDATR_SHIFT;
2757 }
2758
2759 static void
2760 jme_smb_write(struct jme_adapter *jme, unsigned int addr, u8 data)
2761 {
2762         u32 val;
2763         int to;
2764
2765         val = jread32(jme, JME_SMBCSR);
2766         to = JME_SMB_BUSY_TIMEOUT;
2767         while ((val & SMBCSR_BUSY) && --to) {
2768                 msleep(1);
2769                 val = jread32(jme, JME_SMBCSR);
2770         }
2771         if (!to) {
2772                 netif_err(jme, hw, jme->dev, "SMB Bus Busy\n");
2773                 return;
2774         }
2775
2776         jwrite32(jme, JME_SMBINTF,
2777                 ((data << SMBINTF_HWDATW_SHIFT) & SMBINTF_HWDATW) |
2778                 ((addr << SMBINTF_HWADDR_SHIFT) & SMBINTF_HWADDR) |
2779                 SMBINTF_HWRWN_WRITE |
2780                 SMBINTF_HWCMD);
2781
2782         val = jread32(jme, JME_SMBINTF);
2783         to = JME_SMB_BUSY_TIMEOUT;
2784         while ((val & SMBINTF_HWCMD) && --to) {
2785                 msleep(1);
2786                 val = jread32(jme, JME_SMBINTF);
2787         }
2788         if (!to) {
2789                 netif_err(jme, hw, jme->dev, "SMB Bus Busy\n");
2790                 return;
2791         }
2792
2793         mdelay(2);
2794 }
2795
2796 static int
2797 jme_get_eeprom_len(struct net_device *netdev)
2798 {
2799         struct jme_adapter *jme = netdev_priv(netdev);
2800         u32 val;
2801         val = jread32(jme, JME_SMBCSR);
2802         return (val & SMBCSR_EEPROMD) ? JME_SMB_LEN : 0;
2803 }
2804
2805 static int
2806 jme_get_eeprom(struct net_device *netdev,
2807                 struct ethtool_eeprom *eeprom, u8 *data)
2808 {
2809         struct jme_adapter *jme = netdev_priv(netdev);
2810         int i, offset = eeprom->offset, len = eeprom->len;
2811
2812         /*
2813          * ethtool will check the boundary for us
2814          */
2815         eeprom->magic = JME_EEPROM_MAGIC;
2816         for (i = 0 ; i < len ; ++i)
2817                 data[i] = jme_smb_read(jme, i + offset);
2818
2819         return 0;
2820 }
2821
2822 static int
2823 jme_set_eeprom(struct net_device *netdev,
2824                 struct ethtool_eeprom *eeprom, u8 *data)
2825 {
2826         struct jme_adapter *jme = netdev_priv(netdev);
2827         int i, offset = eeprom->offset, len = eeprom->len;
2828
2829         if (eeprom->magic != JME_EEPROM_MAGIC)
2830                 return -EINVAL;
2831
2832         /*
2833          * ethtool will check the boundary for us
2834          */
2835         for (i = 0 ; i < len ; ++i)
2836                 jme_smb_write(jme, i + offset, data[i]);
2837
2838         return 0;
2839 }
2840
2841 static const struct ethtool_ops jme_ethtool_ops = {
2842         .supported_coalesce_params = ETHTOOL_COALESCE_USECS |
2843                                      ETHTOOL_COALESCE_MAX_FRAMES |
2844                                      ETHTOOL_COALESCE_USE_ADAPTIVE_RX,
2845         .get_drvinfo            = jme_get_drvinfo,
2846         .get_regs_len           = jme_get_regs_len,
2847         .get_regs               = jme_get_regs,
2848         .get_coalesce           = jme_get_coalesce,
2849         .set_coalesce           = jme_set_coalesce,
2850         .get_pauseparam         = jme_get_pauseparam,
2851         .set_pauseparam         = jme_set_pauseparam,
2852         .get_wol                = jme_get_wol,
2853         .set_wol                = jme_set_wol,
2854         .get_link               = jme_get_link,
2855         .get_msglevel           = jme_get_msglevel,
2856         .set_msglevel           = jme_set_msglevel,
2857         .nway_reset             = jme_nway_reset,
2858         .get_eeprom_len         = jme_get_eeprom_len,
2859         .get_eeprom             = jme_get_eeprom,
2860         .set_eeprom             = jme_set_eeprom,
2861         .get_link_ksettings     = jme_get_link_ksettings,
2862         .set_link_ksettings     = jme_set_link_ksettings,
2863 };
2864
2865 static int
2866 jme_pci_dma64(struct pci_dev *pdev)
2867 {
2868         if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250 &&
2869             !pci_set_dma_mask(pdev, DMA_BIT_MASK(64)))
2870                 if (!pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)))
2871                         return 1;
2872
2873         if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250 &&
2874             !pci_set_dma_mask(pdev, DMA_BIT_MASK(40)))
2875                 if (!pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(40)))
2876                         return 1;
2877
2878         if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32)))
2879                 if (!pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)))
2880                         return 0;
2881
2882         return -1;
2883 }
2884
2885 static inline void
2886 jme_phy_init(struct jme_adapter *jme)
2887 {
2888         u16 reg26;
2889
2890         reg26 = jme_mdio_read(jme->dev, jme->mii_if.phy_id, 26);
2891         jme_mdio_write(jme->dev, jme->mii_if.phy_id, 26, reg26 | 0x1000);
2892 }
2893
2894 static inline void
2895 jme_check_hw_ver(struct jme_adapter *jme)
2896 {
2897         u32 chipmode;
2898
2899         chipmode = jread32(jme, JME_CHIPMODE);
2900
2901         jme->fpgaver = (chipmode & CM_FPGAVER_MASK) >> CM_FPGAVER_SHIFT;
2902         jme->chiprev = (chipmode & CM_CHIPREV_MASK) >> CM_CHIPREV_SHIFT;
2903         jme->chip_main_rev = jme->chiprev & 0xF;
2904         jme->chip_sub_rev = (jme->chiprev >> 4) & 0xF;
2905 }
2906
2907 static const struct net_device_ops jme_netdev_ops = {
2908         .ndo_open               = jme_open,
2909         .ndo_stop               = jme_close,
2910         .ndo_validate_addr      = eth_validate_addr,
2911         .ndo_do_ioctl           = jme_ioctl,
2912         .ndo_start_xmit         = jme_start_xmit,
2913         .ndo_set_mac_address    = jme_set_macaddr,
2914         .ndo_set_rx_mode        = jme_set_multi,
2915         .ndo_change_mtu         = jme_change_mtu,
2916         .ndo_tx_timeout         = jme_tx_timeout,
2917         .ndo_fix_features       = jme_fix_features,
2918         .ndo_set_features       = jme_set_features,
2919 #ifdef CONFIG_NET_POLL_CONTROLLER
2920         .ndo_poll_controller    = jme_netpoll,
2921 #endif
2922 };
2923
2924 static int
2925 jme_init_one(struct pci_dev *pdev,
2926              const struct pci_device_id *ent)
2927 {
2928         int rc = 0, using_dac, i;
2929         struct net_device *netdev;
2930         struct jme_adapter *jme;
2931         u16 bmcr, bmsr;
2932         u32 apmc;
2933
2934         /*
2935          * set up PCI device basics
2936          */
2937         pci_disable_link_state(pdev, PCIE_LINK_STATE_L0S | PCIE_LINK_STATE_L1 |
2938                                PCIE_LINK_STATE_CLKPM);
2939
2940         rc = pci_enable_device(pdev);
2941         if (rc) {
2942                 pr_err("Cannot enable PCI device\n");
2943                 goto err_out;
2944         }
2945
2946         using_dac = jme_pci_dma64(pdev);
2947         if (using_dac < 0) {
2948                 pr_err("Cannot set PCI DMA Mask\n");
2949                 rc = -EIO;
2950                 goto err_out_disable_pdev;
2951         }
2952
2953         if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
2954                 pr_err("No PCI resource region found\n");
2955                 rc = -ENOMEM;
2956                 goto err_out_disable_pdev;
2957         }
2958
2959         rc = pci_request_regions(pdev, DRV_NAME);
2960         if (rc) {
2961                 pr_err("Cannot obtain PCI resource region\n");
2962                 goto err_out_disable_pdev;
2963         }
2964
2965         pci_set_master(pdev);
2966
2967         /*
2968          * alloc and init net device
2969          */
2970         netdev = alloc_etherdev(sizeof(*jme));
2971         if (!netdev) {
2972                 rc = -ENOMEM;
2973                 goto err_out_release_regions;
2974         }
2975         netdev->netdev_ops = &jme_netdev_ops;
2976         netdev->ethtool_ops             = &jme_ethtool_ops;
2977         netdev->watchdog_timeo          = TX_TIMEOUT;
2978         netdev->hw_features             =       NETIF_F_IP_CSUM |
2979                                                 NETIF_F_IPV6_CSUM |
2980                                                 NETIF_F_SG |
2981                                                 NETIF_F_TSO |
2982                                                 NETIF_F_TSO6 |
2983                                                 NETIF_F_RXCSUM;
2984         netdev->features                =       NETIF_F_IP_CSUM |
2985                                                 NETIF_F_IPV6_CSUM |
2986                                                 NETIF_F_SG |
2987                                                 NETIF_F_TSO |
2988                                                 NETIF_F_TSO6 |
2989                                                 NETIF_F_HW_VLAN_CTAG_TX |
2990                                                 NETIF_F_HW_VLAN_CTAG_RX;
2991         if (using_dac)
2992                 netdev->features        |=      NETIF_F_HIGHDMA;
2993
2994         /* MTU range: 1280 - 9202*/
2995         netdev->min_mtu = IPV6_MIN_MTU;
2996         netdev->max_mtu = MAX_ETHERNET_JUMBO_PACKET_SIZE - ETH_HLEN;
2997
2998         SET_NETDEV_DEV(netdev, &pdev->dev);
2999         pci_set_drvdata(pdev, netdev);
3000
3001         /*
3002          * init adapter info
3003          */
3004         jme = netdev_priv(netdev);
3005         jme->pdev = pdev;
3006         jme->dev = netdev;
3007         jme->jme_rx = netif_rx;
3008         jme->old_mtu = netdev->mtu = 1500;
3009         jme->phylink = 0;
3010         jme->tx_ring_size = 1 << 10;
3011         jme->tx_ring_mask = jme->tx_ring_size - 1;
3012         jme->tx_wake_threshold = 1 << 9;
3013         jme->rx_ring_size = 1 << 9;
3014         jme->rx_ring_mask = jme->rx_ring_size - 1;
3015         jme->msg_enable = JME_DEF_MSG_ENABLE;
3016         jme->regs = ioremap(pci_resource_start(pdev, 0),
3017                              pci_resource_len(pdev, 0));
3018         if (!(jme->regs)) {
3019                 pr_err("Mapping PCI resource region error\n");
3020                 rc = -ENOMEM;
3021                 goto err_out_free_netdev;
3022         }
3023
3024         if (no_pseudohp) {
3025                 apmc = jread32(jme, JME_APMC) & ~JME_APMC_PSEUDO_HP_EN;
3026                 jwrite32(jme, JME_APMC, apmc);
3027         } else if (force_pseudohp) {
3028                 apmc = jread32(jme, JME_APMC) | JME_APMC_PSEUDO_HP_EN;
3029                 jwrite32(jme, JME_APMC, apmc);
3030         }
3031
3032         NETIF_NAPI_SET(netdev, &jme->napi, jme_poll, NAPI_POLL_WEIGHT)
3033
3034         spin_lock_init(&jme->phy_lock);
3035         spin_lock_init(&jme->macaddr_lock);
3036         spin_lock_init(&jme->rxmcs_lock);
3037
3038         atomic_set(&jme->link_changing, 1);
3039         atomic_set(&jme->rx_cleaning, 1);
3040         atomic_set(&jme->tx_cleaning, 1);
3041         atomic_set(&jme->rx_empty, 1);
3042
3043         tasklet_init(&jme->pcc_task,
3044                      jme_pcc_tasklet,
3045                      (unsigned long) jme);
3046         jme->dpi.cur = PCC_P1;
3047
3048         jme->reg_ghc = 0;
3049         jme->reg_rxcs = RXCS_DEFAULT;
3050         jme->reg_rxmcs = RXMCS_DEFAULT;
3051         jme->reg_txpfc = 0;
3052         jme->reg_pmcs = PMCS_MFEN;
3053         jme->reg_gpreg1 = GPREG1_DEFAULT;
3054
3055         if (jme->reg_rxmcs & RXMCS_CHECKSUM)
3056                 netdev->features |= NETIF_F_RXCSUM;
3057
3058         /*
3059          * Get Max Read Req Size from PCI Config Space
3060          */
3061         pci_read_config_byte(pdev, PCI_DCSR_MRRS, &jme->mrrs);
3062         jme->mrrs &= PCI_DCSR_MRRS_MASK;
3063         switch (jme->mrrs) {
3064         case MRRS_128B:
3065                 jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_128B;
3066                 break;
3067         case MRRS_256B:
3068                 jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_256B;
3069                 break;
3070         default:
3071                 jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_512B;
3072                 break;
3073         }
3074
3075         /*
3076          * Must check before reset_mac_processor
3077          */
3078         jme_check_hw_ver(jme);
3079         jme->mii_if.dev = netdev;
3080         if (jme->fpgaver) {
3081                 jme->mii_if.phy_id = 0;
3082                 for (i = 1 ; i < 32 ; ++i) {
3083                         bmcr = jme_mdio_read(netdev, i, MII_BMCR);
3084                         bmsr = jme_mdio_read(netdev, i, MII_BMSR);
3085                         if (bmcr != 0xFFFFU && (bmcr != 0 || bmsr != 0)) {
3086                                 jme->mii_if.phy_id = i;
3087                                 break;
3088                         }
3089                 }
3090
3091                 if (!jme->mii_if.phy_id) {
3092                         rc = -EIO;
3093                         pr_err("Can not find phy_id\n");
3094                         goto err_out_unmap;
3095                 }
3096
3097                 jme->reg_ghc |= GHC_LINK_POLL;
3098         } else {
3099                 jme->mii_if.phy_id = 1;
3100         }
3101         if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250)
3102                 jme->mii_if.supports_gmii = true;
3103         else
3104                 jme->mii_if.supports_gmii = false;
3105         jme->mii_if.phy_id_mask = 0x1F;
3106         jme->mii_if.reg_num_mask = 0x1F;
3107         jme->mii_if.mdio_read = jme_mdio_read;
3108         jme->mii_if.mdio_write = jme_mdio_write;
3109
3110         jme_clear_pm_disable_wol(jme);
3111         device_init_wakeup(&pdev->dev, true);
3112
3113         jme_set_phyfifo_5level(jme);
3114         jme->pcirev = pdev->revision;
3115         if (!jme->fpgaver)
3116                 jme_phy_init(jme);
3117         jme_phy_off(jme);
3118
3119         /*
3120          * Reset MAC processor and reload EEPROM for MAC Address
3121          */
3122         jme_reset_mac_processor(jme);
3123         rc = jme_reload_eeprom(jme);
3124         if (rc) {
3125                 pr_err("Reload eeprom for reading MAC Address error\n");
3126                 goto err_out_unmap;
3127         }
3128         jme_load_macaddr(netdev);
3129
3130         /*
3131          * Tell stack that we are not ready to work until open()
3132          */
3133         netif_carrier_off(netdev);
3134
3135         rc = register_netdev(netdev);
3136         if (rc) {
3137                 pr_err("Cannot register net device\n");
3138                 goto err_out_unmap;
3139         }
3140
3141         netif_info(jme, probe, jme->dev, "%s%s chiprev:%x pcirev:%x macaddr:%pM\n",
3142                    (jme->pdev->device == PCI_DEVICE_ID_JMICRON_JMC250) ?
3143                    "JMC250 Gigabit Ethernet" :
3144                    (jme->pdev->device == PCI_DEVICE_ID_JMICRON_JMC260) ?
3145                    "JMC260 Fast Ethernet" : "Unknown",
3146                    (jme->fpgaver != 0) ? " (FPGA)" : "",
3147                    (jme->fpgaver != 0) ? jme->fpgaver : jme->chiprev,
3148                    jme->pcirev, netdev->dev_addr);
3149
3150         return 0;
3151
3152 err_out_unmap:
3153         iounmap(jme->regs);
3154 err_out_free_netdev:
3155         free_netdev(netdev);
3156 err_out_release_regions:
3157         pci_release_regions(pdev);
3158 err_out_disable_pdev:
3159         pci_disable_device(pdev);
3160 err_out:
3161         return rc;
3162 }
3163
3164 static void
3165 jme_remove_one(struct pci_dev *pdev)
3166 {
3167         struct net_device *netdev = pci_get_drvdata(pdev);
3168         struct jme_adapter *jme = netdev_priv(netdev);
3169
3170         unregister_netdev(netdev);
3171         iounmap(jme->regs);
3172         free_netdev(netdev);
3173         pci_release_regions(pdev);
3174         pci_disable_device(pdev);
3175
3176 }
3177
3178 static void
3179 jme_shutdown(struct pci_dev *pdev)
3180 {
3181         struct net_device *netdev = pci_get_drvdata(pdev);
3182         struct jme_adapter *jme = netdev_priv(netdev);
3183
3184         jme_powersave_phy(jme);
3185         pci_pme_active(pdev, true);
3186 }
3187
3188 #ifdef CONFIG_PM_SLEEP
3189 static int
3190 jme_suspend(struct device *dev)
3191 {
3192         struct net_device *netdev = dev_get_drvdata(dev);
3193         struct jme_adapter *jme = netdev_priv(netdev);
3194
3195         if (!netif_running(netdev))
3196                 return 0;
3197
3198         atomic_dec(&jme->link_changing);
3199
3200         netif_device_detach(netdev);
3201         netif_stop_queue(netdev);
3202         jme_stop_irq(jme);
3203
3204         tasklet_disable(&jme->txclean_task);
3205         tasklet_disable(&jme->rxclean_task);
3206         tasklet_disable(&jme->rxempty_task);
3207
3208         if (netif_carrier_ok(netdev)) {
3209                 if (test_bit(JME_FLAG_POLL, &jme->flags))
3210                         jme_polling_mode(jme);
3211
3212                 jme_stop_pcc_timer(jme);
3213                 jme_disable_rx_engine(jme);
3214                 jme_disable_tx_engine(jme);
3215                 jme_reset_mac_processor(jme);
3216                 jme_free_rx_resources(jme);
3217                 jme_free_tx_resources(jme);
3218                 netif_carrier_off(netdev);
3219                 jme->phylink = 0;
3220         }
3221
3222         tasklet_enable(&jme->txclean_task);
3223         tasklet_enable(&jme->rxclean_task);
3224         tasklet_enable(&jme->rxempty_task);
3225
3226         jme_powersave_phy(jme);
3227
3228         return 0;
3229 }
3230
3231 static int
3232 jme_resume(struct device *dev)
3233 {
3234         struct net_device *netdev = dev_get_drvdata(dev);
3235         struct jme_adapter *jme = netdev_priv(netdev);
3236
3237         if (!netif_running(netdev))
3238                 return 0;
3239
3240         jme_clear_pm_disable_wol(jme);
3241         jme_phy_on(jme);
3242         if (test_bit(JME_FLAG_SSET, &jme->flags))
3243                 jme_set_link_ksettings(netdev, &jme->old_cmd);
3244         else
3245                 jme_reset_phy_processor(jme);
3246         jme_phy_calibration(jme);
3247         jme_phy_setEA(jme);
3248         netif_device_attach(netdev);
3249
3250         atomic_inc(&jme->link_changing);
3251
3252         jme_reset_link(jme);
3253
3254         jme_start_irq(jme);
3255
3256         return 0;
3257 }
3258
3259 static SIMPLE_DEV_PM_OPS(jme_pm_ops, jme_suspend, jme_resume);
3260 #define JME_PM_OPS (&jme_pm_ops)
3261
3262 #else
3263
3264 #define JME_PM_OPS NULL
3265 #endif
3266
3267 static const struct pci_device_id jme_pci_tbl[] = {
3268         { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMC250) },
3269         { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMC260) },
3270         { }
3271 };
3272
3273 static struct pci_driver jme_driver = {
3274         .name           = DRV_NAME,
3275         .id_table       = jme_pci_tbl,
3276         .probe          = jme_init_one,
3277         .remove         = jme_remove_one,
3278         .shutdown       = jme_shutdown,
3279         .driver.pm      = JME_PM_OPS,
3280 };
3281
3282 static int __init
3283 jme_init_module(void)
3284 {
3285         pr_info("JMicron JMC2XX ethernet driver version %s\n", DRV_VERSION);
3286         return pci_register_driver(&jme_driver);
3287 }
3288
3289 static void __exit
3290 jme_cleanup_module(void)
3291 {
3292         pci_unregister_driver(&jme_driver);
3293 }
3294
3295 module_init(jme_init_module);
3296 module_exit(jme_cleanup_module);
3297
3298 MODULE_AUTHOR("Guo-Fu Tseng <cooldavid@cooldavid.org>");
3299 MODULE_DESCRIPTION("JMicron JMC2x0 PCI Express Ethernet driver");
3300 MODULE_LICENSE("GPL");
3301 MODULE_VERSION(DRV_VERSION);
3302 MODULE_DEVICE_TABLE(pci, jme_pci_tbl);