jme.c

   1 /*
   2  * JMicron JMC2x0 series PCIe Ethernet Linux Device Driver
   3  *
   4  * Copyright 2008 JMicron Technology Corporation
   5  * http://www.jmicron.com/
   6  *
   7  * Author: Guo-Fu Tseng <cooldavid@cooldavid.org>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21  *
  22  */
  23
  24 #include <linux/module.h>
  25 #include <linux/kernel.h>
  26 #include <linux/pci.h>
  27 #include <linux/netdevice.h>
  28 #include <linux/etherdevice.h>
  29 #include <linux/ethtool.h>
  30 #include <linux/mii.h>
  31 #include <linux/crc32.h>
  32 #include <linux/delay.h>
  33 #include <linux/spinlock.h>
  34 #include <linux/in.h>
  35 #include <linux/ip.h>
  36 #include <linux/ipv6.h>
  37 #include <linux/tcp.h>
  38 #include <linux/udp.h>
  39 #include <linux/if_vlan.h>
  40 #include <linux/slab.h>
  41 #include <net/ip6_checksum.h>
  42 #include "jme.h"
  43
  44 static int force_pseudohp = -1;
  45 static int no_pseudohp = -1;
  46 static int no_extplug = -1;
  47 module_param(force_pseudohp, int, 0);
  48 MODULE_PARM_DESC(force_pseudohp,
  49         "Enable pseudo hot-plug feature manually by driver instead of BIOS.");
  50 module_param(no_pseudohp, int, 0);
  51 MODULE_PARM_DESC(no_pseudohp, "Disable pseudo hot-plug feature.");
  52 module_param(no_extplug, int, 0);
  53 MODULE_PARM_DESC(no_extplug,
  54         "Do not use external plug signal for pseudo hot-plug.");
  55
  56 static int
  57 jme_mdio_read(struct net_device *netdev, int phy, int reg)
  58 {
  59         struct jme_adapter *jme = netdev_priv(netdev);
  60         int i, val, again = (reg == MII_BMSR) ? 1 : 0;
  61
  62 read_again:
  63         jwrite32(jme, JME_SMI, SMI_OP_REQ |
  64                                 smi_phy_addr(phy) |
  65                                 smi_reg_addr(reg));
  66
  67         wmb();
  68         for (i = JME_PHY_TIMEOUT * 50 ; i > 0 ; --i) {
  69                 udelay(20);
  70                 val = jread32(jme, JME_SMI);
  71                 if ((val & SMI_OP_REQ) == 0)
  72                         break;
  73         }
  74
  75         if (i == 0) {
  76                 jeprintk(jme->pdev, "phy(%d) read timeout : %d\n", phy, reg);
  77                 return 0;
  78         }
  79
  80         if (again--)
  81                 goto read_again;
  82
  83         return (val & SMI_DATA_MASK) >> SMI_DATA_SHIFT;
  84 }
  85
  86 static void
  87 jme_mdio_write(struct net_device *netdev,
  88                                 int phy, int reg, int val)
  89 {
  90         struct jme_adapter *jme = netdev_priv(netdev);
  91         int i;
  92
  93         jwrite32(jme, JME_SMI, SMI_OP_WRITE | SMI_OP_REQ |
  94                 ((val << SMI_DATA_SHIFT) & SMI_DATA_MASK) |
  95                 smi_phy_addr(phy) | smi_reg_addr(reg));
  96
  97         wmb();
  98         for (i = JME_PHY_TIMEOUT * 50 ; i > 0 ; --i) {
  99                 udelay(20);
 100                 if ((jread32(jme, JME_SMI) & SMI_OP_REQ) == 0)
 101                         break;
 102         }
 103
 104         if (i == 0)
 105                 jeprintk(jme->pdev, "phy(%d) write timeout : %d\n", phy, reg);
 106 }
 107
 108 static inline void
 109 jme_reset_phy_processor(struct jme_adapter *jme)
 110 {
 111         u32 val;
 112
 113         jme_mdio_write(jme->dev,
 114                         jme->mii_if.phy_id,
 115                         MII_ADVERTISE, ADVERTISE_ALL |
 116                         ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
 117
 118         if (jme->pdev->device == PCI_DEVICE_ID_JMICRON_JMC250)
 119                 jme_mdio_write(jme->dev,
 120                                 jme->mii_if.phy_id,
 121                                 MII_CTRL1000,
 122                                 ADVERTISE_1000FULL | ADVERTISE_1000HALF);
 123
 124         val = jme_mdio_read(jme->dev,
 125                                 jme->mii_if.phy_id,
 126                                 MII_BMCR);
 127
 128         jme_mdio_write(jme->dev,
 129                         jme->mii_if.phy_id,
 130                         MII_BMCR, val | BMCR_RESET);
 131 }
 132
 133 static void
 134 jme_setup_wakeup_frame(struct jme_adapter *jme,
 135                 u32 *mask, u32 crc, int fnr)
 136 {
 137         int i;
 138
 139         /*
 140          * Setup CRC pattern
 141          */
 142         jwrite32(jme, JME_WFOI, WFOI_CRC_SEL | (fnr & WFOI_FRAME_SEL));
 143         wmb();
 144         jwrite32(jme, JME_WFODP, crc);
 145         wmb();
 146
 147         /*
 148          * Setup Mask
 149          */
 150         for (i = 0 ; i < WAKEUP_FRAME_MASK_DWNR ; ++i) {
 151                 jwrite32(jme, JME_WFOI,
 152                                 ((i << WFOI_MASK_SHIFT) & WFOI_MASK_SEL) |
 153                                 (fnr & WFOI_FRAME_SEL));
 154                 wmb();
 155                 jwrite32(jme, JME_WFODP, mask[i]);
 156                 wmb();
 157         }
 158 }
 159
 160 static inline void
 161 jme_reset_mac_processor(struct jme_adapter *jme)
 162 {
 163         u32 mask[WAKEUP_FRAME_MASK_DWNR] = {0, 0, 0, 0};
 164         u32 crc = 0xCDCDCDCD;
 165         u32 gpreg0;
 166         int i;
 167
 168         jwrite32(jme, JME_GHC, jme->reg_ghc | GHC_SWRST);
 169         udelay(2);
 170         jwrite32(jme, JME_GHC, jme->reg_ghc);
 171
 172         jwrite32(jme, JME_RXDBA_LO, 0x00000000);
 173         jwrite32(jme, JME_RXDBA_HI, 0x00000000);
 174         jwrite32(jme, JME_RXQDC, 0x00000000);
 175         jwrite32(jme, JME_RXNDA, 0x00000000);
 176         jwrite32(jme, JME_TXDBA_LO, 0x00000000);
 177         jwrite32(jme, JME_TXDBA_HI, 0x00000000);
 178         jwrite32(jme, JME_TXQDC, 0x00000000);
 179         jwrite32(jme, JME_TXNDA, 0x00000000);
 180
 181         jwrite32(jme, JME_RXMCHT_LO, 0x00000000);
 182         jwrite32(jme, JME_RXMCHT_HI, 0x00000000);
 183         for (i = 0 ; i < WAKEUP_FRAME_NR ; ++i)
 184                 jme_setup_wakeup_frame(jme, mask, crc, i);
 185         if (jme->fpgaver)
 186                 gpreg0 = GPREG0_DEFAULT | GPREG0_LNKINTPOLL;
 187         else
 188                 gpreg0 = GPREG0_DEFAULT;
 189         jwrite32(jme, JME_GPREG0, gpreg0);
 190         jwrite32(jme, JME_GPREG1, GPREG1_DEFAULT);
 191 }
 192
 193 static inline void
 194 jme_reset_ghc_speed(struct jme_adapter *jme)
 195 {
 196         jme->reg_ghc &= ~(GHC_SPEED_1000M | GHC_DPX);
 197         jwrite32(jme, JME_GHC, jme->reg_ghc);
 198 }
 199
 200 static inline void
 201 jme_clear_pm(struct jme_adapter *jme)
 202 {
 203         jwrite32(jme, JME_PMCS, 0xFFFF0000 | jme->reg_pmcs);
 204         pci_set_power_state(jme->pdev, PCI_D0);
 205         pci_enable_wake(jme->pdev, PCI_D0, false);
 206 }
 207
 208 static int
 209 jme_reload_eeprom(struct jme_adapter *jme)
 210 {
 211         u32 val;
 212         int i;
 213
 214         val = jread32(jme, JME_SMBCSR);
 215
 216         if (val & SMBCSR_EEPROMD) {
 217                 val |= SMBCSR_CNACK;
 218                 jwrite32(jme, JME_SMBCSR, val);
 219                 val |= SMBCSR_RELOAD;
 220                 jwrite32(jme, JME_SMBCSR, val);
 221                 mdelay(12);
 222
 223                 for (i = JME_EEPROM_RELOAD_TIMEOUT; i > 0; --i) {
 224                         mdelay(1);
 225                         if ((jread32(jme, JME_SMBCSR) & SMBCSR_RELOAD) == 0)
 226                                 break;
 227                 }
 228
 229                 if (i == 0) {
 230                         jeprintk(jme->pdev, "eeprom reload timeout\n");
 231                         return -EIO;
 232                 }
 233         }
 234
 235         return 0;
 236 }
 237
 238 static void
 239 jme_load_macaddr(struct net_device *netdev)
 240 {
 241         struct jme_adapter *jme = netdev_priv(netdev);
 242         unsigned char macaddr[6];
 243         u32 val;
 244
 245         spin_lock_bh(&jme->macaddr_lock);
 246         val = jread32(jme, JME_RXUMA_LO);
 247         macaddr[0] = (val >>  0) & 0xFF;
 248         macaddr[1] = (val >>  8) & 0xFF;
 249         macaddr[2] = (val >> 16) & 0xFF;
 250         macaddr[3] = (val >> 24) & 0xFF;
 251         val = jread32(jme, JME_RXUMA_HI);
 252         macaddr[4] = (val >>  0) & 0xFF;
 253         macaddr[5] = (val >>  8) & 0xFF;
 254         memcpy(netdev->dev_addr, macaddr, 6);
 255         spin_unlock_bh(&jme->macaddr_lock);
 256 }
 257
 258 static inline void
 259 jme_set_rx_pcc(struct jme_adapter *jme, int p)
 260 {
 261         switch (p) {
 262         case PCC_OFF:
 263                 jwrite32(jme, JME_PCCRX0,
 264                         ((PCC_OFF_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
 265                         ((PCC_OFF_CNT << PCCRX_SHIFT) & PCCRX_MASK));
 266                 break;
 267         case PCC_P1:
 268                 jwrite32(jme, JME_PCCRX0,
 269                         ((PCC_P1_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
 270                         ((PCC_P1_CNT << PCCRX_SHIFT) & PCCRX_MASK));
 271                 break;
 272         case PCC_P2:
 273                 jwrite32(jme, JME_PCCRX0,
 274                         ((PCC_P2_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
 275                         ((PCC_P2_CNT << PCCRX_SHIFT) & PCCRX_MASK));
 276                 break;
 277         case PCC_P3:
 278                 jwrite32(jme, JME_PCCRX0,
 279                         ((PCC_P3_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
 280                         ((PCC_P3_CNT << PCCRX_SHIFT) & PCCRX_MASK));
 281                 break;
 282         default:
 283                 break;
 284         }
 285         wmb();
 286
 287         if (!(test_bit(JME_FLAG_POLL, &jme->flags)))
 288 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,33)
 289                 msg_rx_status(jme, "Switched to PCC_P%d\n", p);
 290 #else
 291                 netif_info(jme, rx_status, jme->dev, "Switched to PCC_P%d\n", p);
 292 #endif
 293 }
 294
 295 static void
 296 jme_start_irq(struct jme_adapter *jme)
 297 {
 298         register struct dynpcc_info *dpi = &(jme->dpi);
 299
 300         jme_set_rx_pcc(jme, PCC_P1);
 301         dpi->cur                = PCC_P1;
 302         dpi->attempt            = PCC_P1;
 303         dpi->cnt                = 0;
 304
 305         jwrite32(jme, JME_PCCTX,
 306                         ((PCC_TX_TO << PCCTXTO_SHIFT) & PCCTXTO_MASK) |
 307                         ((PCC_TX_CNT << PCCTX_SHIFT) & PCCTX_MASK) |
 308                         PCCTXQ0_EN
 309                 );
 310
 311         /*
 312          * Enable Interrupts
 313          */
 314         jwrite32(jme, JME_IENS, INTR_ENABLE);
 315 }
 316
 317 static inline void
 318 jme_stop_irq(struct jme_adapter *jme)
 319 {
 320         /*
 321          * Disable Interrupts
 322          */
 323         jwrite32f(jme, JME_IENC, INTR_ENABLE);
 324 }
 325
 326 static u32
 327 jme_linkstat_from_phy(struct jme_adapter *jme)
 328 {
 329         u32 phylink, bmsr;
 330
 331         phylink = jme_mdio_read(jme->dev, jme->mii_if.phy_id, 17);
 332         bmsr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMSR);
 333         if (bmsr & BMSR_ANCOMP)
 334                 phylink |= PHY_LINK_AUTONEG_COMPLETE;
 335
 336         return phylink;
 337 }
 338
 339 static inline void
 340 jme_set_phyfifoa(struct jme_adapter *jme)
 341 {
 342         jme_mdio_write(jme->dev, jme->mii_if.phy_id, 27, 0x0004);
 343 }
 344
 345 static inline void
 346 jme_set_phyfifob(struct jme_adapter *jme)
 347 {
 348         jme_mdio_write(jme->dev, jme->mii_if.phy_id, 27, 0x0000);
 349 }
 350
 351 static int
 352 jme_check_link(struct net_device *netdev, int testonly)
 353 {
 354         struct jme_adapter *jme = netdev_priv(netdev);
 355         u32 phylink, ghc, cnt = JME_SPDRSV_TIMEOUT, bmcr, gpreg1;
 356         char linkmsg[64];
 357         int rc = 0;
 358
 359         linkmsg[0] = '\0';
 360
 361         if (jme->fpgaver)
 362                 phylink = jme_linkstat_from_phy(jme);
 363         else
 364                 phylink = jread32(jme, JME_PHY_LINK);
 365
 366         if (phylink & PHY_LINK_UP) {
 367                 if (!(phylink & PHY_LINK_AUTONEG_COMPLETE)) {
 368                         /*
 369                          * If we did not enable AN
 370                          * Speed/Duplex Info should be obtained from SMI
 371                          */
 372                         phylink = PHY_LINK_UP;
 373
 374                         bmcr = jme_mdio_read(jme->dev,
 375                                                 jme->mii_if.phy_id,
 376                                                 MII_BMCR);
 377
 378                         phylink |= ((bmcr & BMCR_SPEED1000) &&
 379                                         (bmcr & BMCR_SPEED100) == 0) ?
 380                                         PHY_LINK_SPEED_1000M :
 381                                         (bmcr & BMCR_SPEED100) ?
 382                                         PHY_LINK_SPEED_100M :
 383                                         PHY_LINK_SPEED_10M;
 384
 385                         phylink |= (bmcr & BMCR_FULLDPLX) ?
 386                                          PHY_LINK_DUPLEX : 0;
 387
 388                         strcat(linkmsg, "Forced: ");
 389                 } else {
 390                         /*
 391                          * Keep polling for speed/duplex resolve complete
 392                          */
 393                         while (!(phylink & PHY_LINK_SPEEDDPU_RESOLVED) &&
 394                                 --cnt) {
 395
 396                                 udelay(1);
 397
 398                                 if (jme->fpgaver)
 399                                         phylink = jme_linkstat_from_phy(jme);
 400                                 else
 401                                         phylink = jread32(jme, JME_PHY_LINK);
 402                         }
 403                         if (!cnt)
 404                                 jeprintk(jme->pdev,
 405                                         "Waiting speed resolve timeout.\n");
 406
 407                         strcat(linkmsg, "ANed: ");
 408                 }
 409
 410                 if (jme->phylink == phylink) {
 411                         rc = 1;
 412                         goto out;
 413                 }
 414                 if (testonly)
 415                         goto out;
 416
 417                 jme->phylink = phylink;
 418
 419                 ghc = jme->reg_ghc & ~(GHC_SPEED | GHC_DPX |
 420                                 GHC_TO_CLK_PCIE | GHC_TXMAC_CLK_PCIE |
 421                                 GHC_TO_CLK_GPHY | GHC_TXMAC_CLK_GPHY);
 422                 switch (phylink & PHY_LINK_SPEED_MASK) {
 423                 case PHY_LINK_SPEED_10M:
 424                         ghc |= GHC_SPEED_10M |
 425                                 GHC_TO_CLK_PCIE | GHC_TXMAC_CLK_PCIE;
 426                         strcat(linkmsg, "10 Mbps, ");
 427                         break;
 428                 case PHY_LINK_SPEED_100M:
 429                         ghc |= GHC_SPEED_100M |
 430                                 GHC_TO_CLK_PCIE | GHC_TXMAC_CLK_PCIE;
 431                         strcat(linkmsg, "100 Mbps, ");
 432                         break;
 433                 case PHY_LINK_SPEED_1000M:
 434                         ghc |= GHC_SPEED_1000M |
 435                                 GHC_TO_CLK_GPHY | GHC_TXMAC_CLK_GPHY;
 436                         strcat(linkmsg, "1000 Mbps, ");
 437                         break;
 438                 default:
 439                         break;
 440                 }
 441
 442                 if (phylink & PHY_LINK_DUPLEX) {
 443                         jwrite32(jme, JME_TXMCS, TXMCS_DEFAULT);
 444                         ghc |= GHC_DPX;
 445                 } else {
 446                         jwrite32(jme, JME_TXMCS, TXMCS_DEFAULT |
 447                                                 TXMCS_BACKOFF |
 448                                                 TXMCS_CARRIERSENSE |
 449                                                 TXMCS_COLLISION);
 450                         jwrite32(jme, JME_TXTRHD, TXTRHD_TXPEN |
 451                                 ((0x2000 << TXTRHD_TXP_SHIFT) & TXTRHD_TXP) |
 452                                 TXTRHD_TXREN |
 453                                 ((8 << TXTRHD_TXRL_SHIFT) & TXTRHD_TXRL));
 454                 }
 455
 456                 gpreg1 = GPREG1_DEFAULT;
 457                 if (is_buggy250(jme->pdev->device, jme->chiprev)) {
 458                         if (!(phylink & PHY_LINK_DUPLEX))
 459                                 gpreg1 |= GPREG1_HALFMODEPATCH;
 460                         switch (phylink & PHY_LINK_SPEED_MASK) {
 461                         case PHY_LINK_SPEED_10M:
 462                                 jme_set_phyfifoa(jme);
 463                                 gpreg1 |= GPREG1_RSSPATCH;
 464                                 break;
 465                         case PHY_LINK_SPEED_100M:
 466                                 jme_set_phyfifob(jme);
 467                                 gpreg1 |= GPREG1_RSSPATCH;
 468                                 break;
 469                         case PHY_LINK_SPEED_1000M:
 470                                 jme_set_phyfifoa(jme);
 471                                 break;
 472                         default:
 473                                 break;
 474                         }
 475                 }
 476
 477                 jwrite32(jme, JME_GPREG1, gpreg1);
 478                 jwrite32(jme, JME_GHC, ghc);
 479                 jme->reg_ghc = ghc;
 480
 481                 strcat(linkmsg, (phylink & PHY_LINK_DUPLEX) ?
 482                                         "Full-Duplex, " :
 483                                         "Half-Duplex, ");
 484                 strcat(linkmsg, (phylink & PHY_LINK_MDI_STAT) ?
 485                                         "MDI-X" :
 486                                         "MDI");
 487 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,33)
 488                 msg_link(jme, "Link is up at %s.\n", linkmsg);
 489 #else
 490                 netif_info(jme, link, jme->dev, "Link is up at %s.\n", linkmsg);
 491 #endif
 492                 netif_carrier_on(netdev);
 493         } else {
 494                 if (testonly)
 495                         goto out;
 496
 497 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,33)
 498                 msg_link(jme, "Link is down.\n");
 499 #else
 500                 netif_info(jme, link, jme->dev, "Link is down.\n");
 501 #endif
 502                 jme->phylink = 0;
 503                 netif_carrier_off(netdev);
 504         }
 505
 506 out:
 507         return rc;
 508 }
 509
 510 static int
 511 jme_setup_tx_resources(struct jme_adapter *jme)
 512 {
 513         struct jme_ring *txring = &(jme->txring[0]);
 514
 515         txring->alloc = dma_alloc_coherent(&(jme->pdev->dev),
 516                                    TX_RING_ALLOC_SIZE(jme->tx_ring_size),
 517                                    &(txring->dmaalloc),
 518                                    GFP_ATOMIC);
 519
 520         if (!txring->alloc)
 521                 goto err_set_null;
 522
 523         /*
 524          * 16 Bytes align
 525          */
 526         txring->desc            = (void *)ALIGN((unsigned long)(txring->alloc),
 527                                                 RING_DESC_ALIGN);
 528         txring->dma             = ALIGN(txring->dmaalloc, RING_DESC_ALIGN);
 529         txring->next_to_use     = 0;
 530         atomic_set(&txring->next_to_clean, 0);
 531         atomic_set(&txring->nr_free, jme->tx_ring_size);
 532
 533         txring->bufinf          = kmalloc(sizeof(struct jme_buffer_info) *
 534                                         jme->tx_ring_size, GFP_ATOMIC);
 535         if (unlikely(!(txring->bufinf)))
 536                 goto err_free_txring;
 537
 538         /*
 539          * Initialize Transmit Descriptors
 540          */
 541         memset(txring->alloc, 0, TX_RING_ALLOC_SIZE(jme->tx_ring_size));
 542         memset(txring->bufinf, 0,
 543                 sizeof(struct jme_buffer_info) * jme->tx_ring_size);
 544
 545         return 0;
 546
 547 err_free_txring:
 548         dma_free_coherent(&(jme->pdev->dev),
 549                           TX_RING_ALLOC_SIZE(jme->tx_ring_size),
 550                           txring->alloc,
 551                           txring->dmaalloc);
 552
 553 err_set_null:
 554         txring->desc = NULL;
 555         txring->dmaalloc = 0;
 556         txring->dma = 0;
 557         txring->bufinf = NULL;
 558
 559         return -ENOMEM;
 560 }
 561
 562 static void
 563 jme_free_tx_resources(struct jme_adapter *jme)
 564 {
 565         int i;
 566         struct jme_ring *txring = &(jme->txring[0]);
 567         struct jme_buffer_info *txbi;
 568
 569         if (txring->alloc) {
 570                 if (txring->bufinf) {
 571                         for (i = 0 ; i < jme->tx_ring_size ; ++i) {
 572                                 txbi = txring->bufinf + i;
 573                                 if (txbi->skb) {
 574                                         dev_kfree_skb(txbi->skb);
 575                                         txbi->skb = NULL;
 576                                 }
 577                                 txbi->mapping           = 0;
 578                                 txbi->len               = 0;
 579                                 txbi->nr_desc           = 0;
 580                                 txbi->start_xmit        = 0;
 581                         }
 582                         kfree(txring->bufinf);
 583                 }
 584
 585                 dma_free_coherent(&(jme->pdev->dev),
 586                                   TX_RING_ALLOC_SIZE(jme->tx_ring_size),
 587                                   txring->alloc,
 588                                   txring->dmaalloc);
 589
 590                 txring->alloc           = NULL;
 591                 txring->desc            = NULL;
 592                 txring->dmaalloc        = 0;
 593                 txring->dma             = 0;
 594                 txring->bufinf          = NULL;
 595         }
 596         txring->next_to_use     = 0;
 597         atomic_set(&txring->next_to_clean, 0);
 598         atomic_set(&txring->nr_free, 0);
 599 }
 600
 601 static inline void
 602 jme_enable_tx_engine(struct jme_adapter *jme)
 603 {
 604         /*
 605          * Select Queue 0
 606          */
 607         jwrite32(jme, JME_TXCS, TXCS_DEFAULT | TXCS_SELECT_QUEUE0);
 608         wmb();
 609
 610         /*
 611          * Setup TX Queue 0 DMA Bass Address
 612          */
 613         jwrite32(jme, JME_TXDBA_LO, (__u64)jme->txring[0].dma & 0xFFFFFFFFUL);
 614         jwrite32(jme, JME_TXDBA_HI, (__u64)(jme->txring[0].dma) >> 32);
 615         jwrite32(jme, JME_TXNDA, (__u64)jme->txring[0].dma & 0xFFFFFFFFUL);
 616
 617         /*
 618          * Setup TX Descptor Count
 619          */
 620         jwrite32(jme, JME_TXQDC, jme->tx_ring_size);
 621
 622         /*
 623          * Enable TX Engine
 624          */
 625         wmb();
 626         jwrite32(jme, JME_TXCS, jme->reg_txcs |
 627                                 TXCS_SELECT_QUEUE0 |
 628                                 TXCS_ENABLE);
 629
 630 }
 631
 632 static inline void
 633 jme_restart_tx_engine(struct jme_adapter *jme)
 634 {
 635         /*
 636          * Restart TX Engine
 637          */
 638         jwrite32(jme, JME_TXCS, jme->reg_txcs |
 639                                 TXCS_SELECT_QUEUE0 |
 640                                 TXCS_ENABLE);
 641 }
 642
 643 static inline void
 644 jme_disable_tx_engine(struct jme_adapter *jme)
 645 {
 646         int i;
 647         u32 val;
 648
 649         /*
 650          * Disable TX Engine
 651          */
 652         jwrite32(jme, JME_TXCS, jme->reg_txcs | TXCS_SELECT_QUEUE0);
 653         wmb();
 654
 655         val = jread32(jme, JME_TXCS);
 656         for (i = JME_TX_DISABLE_TIMEOUT ; (val & TXCS_ENABLE) && i > 0 ; --i) {
 657                 mdelay(1);
 658                 val = jread32(jme, JME_TXCS);
 659                 rmb();
 660         }
 661
 662         if (!i)
 663                 jeprintk(jme->pdev, "Disable TX engine timeout.\n");
 664 }
 665
 666 static void
 667 jme_set_clean_rxdesc(struct jme_adapter *jme, int i)
 668 {
 669         struct jme_ring *rxring = &(jme->rxring[0]);
 670         register struct rxdesc *rxdesc = rxring->desc;
 671         struct jme_buffer_info *rxbi = rxring->bufinf;
 672         rxdesc += i;
 673         rxbi += i;
 674
 675         rxdesc->dw[0] = 0;
 676         rxdesc->dw[1] = 0;
 677         rxdesc->desc1.bufaddrh  = cpu_to_le32((__u64)rxbi->mapping >> 32);
 678         rxdesc->desc1.bufaddrl  = cpu_to_le32(
 679                                         (__u64)rxbi->mapping & 0xFFFFFFFFUL);
 680         rxdesc->desc1.datalen   = cpu_to_le16(rxbi->len);
 681         if (jme->dev->features & NETIF_F_HIGHDMA)
 682                 rxdesc->desc1.flags = RXFLAG_64BIT;
 683         wmb();
 684         rxdesc->desc1.flags     |= RXFLAG_OWN | RXFLAG_INT;
 685 }
 686
 687 static int
 688 jme_make_new_rx_buf(struct jme_adapter *jme, int i)
 689 {
 690         struct jme_ring *rxring = &(jme->rxring[0]);
 691         struct jme_buffer_info *rxbi = rxring->bufinf + i;
 692         struct sk_buff *skb;
 693
 694         skb = netdev_alloc_skb(jme->dev,
 695                 jme->dev->mtu + RX_EXTRA_LEN);
 696         if (unlikely(!skb))
 697                 return -ENOMEM;
 698 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)
 699         skb->dev = jme->dev;
 700 #endif
 701
 702         rxbi->skb = skb;
 703         rxbi->len = skb_tailroom(skb);
 704         rxbi->mapping = pci_map_page(jme->pdev,
 705                                         virt_to_page(skb->data),
 706                                         offset_in_page(skb->data),
 707                                         rxbi->len,
 708                                         PCI_DMA_FROMDEVICE);
 709
 710         return 0;
 711 }
 712
 713 static void
 714 jme_free_rx_buf(struct jme_adapter *jme, int i)
 715 {
 716         struct jme_ring *rxring = &(jme->rxring[0]);
 717         struct jme_buffer_info *rxbi = rxring->bufinf;
 718         rxbi += i;
 719
 720         if (rxbi->skb) {
 721                 pci_unmap_page(jme->pdev,
 722                                  rxbi->mapping,
 723                                  rxbi->len,
 724                                  PCI_DMA_FROMDEVICE);
 725                 dev_kfree_skb(rxbi->skb);
 726                 rxbi->skb = NULL;
 727                 rxbi->mapping = 0;
 728                 rxbi->len = 0;
 729         }
 730 }
 731
 732 static void
 733 jme_free_rx_resources(struct jme_adapter *jme)
 734 {
 735         int i;
 736         struct jme_ring *rxring = &(jme->rxring[0]);
 737
 738         if (rxring->alloc) {
 739                 if (rxring->bufinf) {
 740                         for (i = 0 ; i < jme->rx_ring_size ; ++i)
 741                                 jme_free_rx_buf(jme, i);
 742                         kfree(rxring->bufinf);
 743                 }
 744
 745                 dma_free_coherent(&(jme->pdev->dev),
 746                                   RX_RING_ALLOC_SIZE(jme->rx_ring_size),
 747                                   rxring->alloc,
 748                                   rxring->dmaalloc);
 749                 rxring->alloc    = NULL;
 750                 rxring->desc     = NULL;
 751                 rxring->dmaalloc = 0;
 752                 rxring->dma      = 0;
 753                 rxring->bufinf   = NULL;
 754         }
 755         rxring->next_to_use   = 0;
 756         atomic_set(&rxring->next_to_clean, 0);
 757 }
 758
 759 static int
 760 jme_setup_rx_resources(struct jme_adapter *jme)
 761 {
 762         int i;
 763         struct jme_ring *rxring = &(jme->rxring[0]);
 764
 765         rxring->alloc = dma_alloc_coherent(&(jme->pdev->dev),
 766                                    RX_RING_ALLOC_SIZE(jme->rx_ring_size),
 767                                    &(rxring->dmaalloc),
 768                                    GFP_ATOMIC);
 769         if (!rxring->alloc)
 770                 goto err_set_null;
 771
 772         /*
 773          * 16 Bytes align
 774          */
 775         rxring->desc            = (void *)ALIGN((unsigned long)(rxring->alloc),
 776                                                 RING_DESC_ALIGN);
 777         rxring->dma             = ALIGN(rxring->dmaalloc, RING_DESC_ALIGN);
 778         rxring->next_to_use     = 0;
 779         atomic_set(&rxring->next_to_clean, 0);
 780
 781         rxring->bufinf          = kmalloc(sizeof(struct jme_buffer_info) *
 782                                         jme->rx_ring_size, GFP_ATOMIC);
 783         if (unlikely(!(rxring->bufinf)))
 784                 goto err_free_rxring;
 785
 786         /*
 787          * Initiallize Receive Descriptors
 788          */
 789         memset(rxring->bufinf, 0,
 790                 sizeof(struct jme_buffer_info) * jme->rx_ring_size);
 791         for (i = 0 ; i < jme->rx_ring_size ; ++i) {
 792                 if (unlikely(jme_make_new_rx_buf(jme, i))) {
 793                         jme_free_rx_resources(jme);
 794                         return -ENOMEM;
 795                 }
 796
 797                 jme_set_clean_rxdesc(jme, i);
 798         }
 799
 800         return 0;
 801
 802 err_free_rxring:
 803         dma_free_coherent(&(jme->pdev->dev),
 804                           RX_RING_ALLOC_SIZE(jme->rx_ring_size),
 805                           rxring->alloc,
 806                           rxring->dmaalloc);
 807 err_set_null:
 808         rxring->desc = NULL;
 809         rxring->dmaalloc = 0;
 810         rxring->dma = 0;
 811         rxring->bufinf = NULL;
 812
 813         return -ENOMEM;
 814 }
 815
 816 static inline void
 817 jme_enable_rx_engine(struct jme_adapter *jme)
 818 {
 819         /*
 820          * Select Queue 0
 821          */
 822         jwrite32(jme, JME_RXCS, jme->reg_rxcs |
 823                                 RXCS_QUEUESEL_Q0);
 824         wmb();
 825
 826         /*
 827          * Setup RX DMA Bass Address
 828          */
 829         jwrite32(jme, JME_RXDBA_LO, (__u64)(jme->rxring[0].dma) & 0xFFFFFFFFUL);
 830         jwrite32(jme, JME_RXDBA_HI, (__u64)(jme->rxring[0].dma) >> 32);
 831         jwrite32(jme, JME_RXNDA, (__u64)(jme->rxring[0].dma) & 0xFFFFFFFFUL);
 832
 833         /*
 834          * Setup RX Descriptor Count
 835          */
 836         jwrite32(jme, JME_RXQDC, jme->rx_ring_size);
 837
 838         /*
 839          * Setup Unicast Filter
 840          */
 841         jme_set_multi(jme->dev);
 842
 843         /*
 844          * Enable RX Engine
 845          */
 846         wmb();
 847         jwrite32(jme, JME_RXCS, jme->reg_rxcs |
 848                                 RXCS_QUEUESEL_Q0 |
 849                                 RXCS_ENABLE |
 850                                 RXCS_QST);
 851 }
 852
 853 static inline void
 854 jme_restart_rx_engine(struct jme_adapter *jme)
 855 {
 856         /*
 857          * Start RX Engine
 858          */
 859         jwrite32(jme, JME_RXCS, jme->reg_rxcs |
 860                                 RXCS_QUEUESEL_Q0 |
 861                                 RXCS_ENABLE |
 862                                 RXCS_QST);
 863 }
 864
 865 static inline void
 866 jme_disable_rx_engine(struct jme_adapter *jme)
 867 {
 868         int i;
 869         u32 val;
 870
 871         /*
 872          * Disable RX Engine
 873          */
 874         jwrite32(jme, JME_RXCS, jme->reg_rxcs);
 875         wmb();
 876
 877         val = jread32(jme, JME_RXCS);
 878         for (i = JME_RX_DISABLE_TIMEOUT ; (val & RXCS_ENABLE) && i > 0 ; --i) {
 879                 mdelay(1);
 880                 val = jread32(jme, JME_RXCS);
 881                 rmb();
 882         }
 883
 884         if (!i)
 885                 jeprintk(jme->pdev, "Disable RX engine timeout.\n");
 886
 887 }
 888
 889 static int
 890 jme_rxsum_ok(struct jme_adapter *jme, u16 flags)
 891 {
 892         if (!(flags & (RXWBFLAG_TCPON | RXWBFLAG_UDPON | RXWBFLAG_IPV4)))
 893                 return false;
 894
 895         if (unlikely((flags & (RXWBFLAG_MF | RXWBFLAG_TCPON | RXWBFLAG_TCPCS))
 896                         == RXWBFLAG_TCPON)) {
 897                 if (flags & RXWBFLAG_IPV4)
 898 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,33)
 899                         msg_rx_err(jme, "TCP Checksum error\n");
 900 #else
 901                         netif_err(jme, rx_err, jme->dev, "TCP Checksum error\n");
 902 #endif
 903                 return false;
 904         }
 905
 906         if (unlikely((flags & (RXWBFLAG_MF | RXWBFLAG_UDPON | RXWBFLAG_UDPCS))
 907                         == RXWBFLAG_UDPON)) {
 908                 if (flags & RXWBFLAG_IPV4)
 909 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,33)
 910                         msg_rx_err(jme, "UDP Checksum error.\n");
 911 #else
 912                         netif_err(jme, rx_err, jme->dev, "UDP Checksum error.\n");
 913 #endif
 914                 return false;
 915         }
 916
 917         if (unlikely((flags & (RXWBFLAG_IPV4 | RXWBFLAG_IPCS))
 918                         == RXWBFLAG_IPV4)) {
 919 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,33)
 920                 msg_rx_err(jme, "IPv4 Checksum error.\n");
 921 #else
 922                 netif_err(jme, rx_err, jme->dev, "IPv4 Checksum error.\n");
 923 #endif
 924                 return false;
 925         }
 926
 927         return true;
 928 }
 929
 930 static void
 931 jme_alloc_and_feed_skb(struct jme_adapter *jme, int idx)
 932 {
 933         struct jme_ring *rxring = &(jme->rxring[0]);
 934         struct rxdesc *rxdesc = rxring->desc;
 935         struct jme_buffer_info *rxbi = rxring->bufinf;
 936         struct sk_buff *skb;
 937         int framesize;
 938
 939         rxdesc += idx;
 940         rxbi += idx;
 941
 942         skb = rxbi->skb;
 943         pci_dma_sync_single_for_cpu(jme->pdev,
 944                                         rxbi->mapping,
 945                                         rxbi->len,
 946                                         PCI_DMA_FROMDEVICE);
 947
 948         if (unlikely(jme_make_new_rx_buf(jme, idx))) {
 949                 pci_dma_sync_single_for_device(jme->pdev,
 950                                                 rxbi->mapping,
 951                                                 rxbi->len,
 952                                                 PCI_DMA_FROMDEVICE);
 953
 954                 ++(NET_STAT(jme).rx_dropped);
 955         } else {
 956                 framesize = le16_to_cpu(rxdesc->descwb.framesize)
 957                                 - RX_PREPAD_SIZE;
 958
 959                 skb_reserve(skb, RX_PREPAD_SIZE);
 960                 skb_put(skb, framesize);
 961                 skb->protocol = eth_type_trans(skb, jme->dev);
 962
 963                 if (jme_rxsum_ok(jme, le16_to_cpu(rxdesc->descwb.flags)))
 964                         skb->ip_summed = CHECKSUM_UNNECESSARY;
 965                 else
 966                         skb->ip_summed = CHECKSUM_NONE;
 967
 968                 if (rxdesc->descwb.flags & cpu_to_le16(RXWBFLAG_TAGON)) {
 969                         if (jme->vlgrp) {
 970                                 jme->jme_vlan_rx(skb, jme->vlgrp,
 971                                         le16_to_cpu(rxdesc->descwb.vlan));
 972                                 NET_STAT(jme).rx_bytes += 4;
 973                         } else {
 974                                 dev_kfree_skb(skb);
 975                         }
 976                 } else {
 977                         jme->jme_rx(skb);
 978                 }
 979
 980                 if ((rxdesc->descwb.flags & cpu_to_le16(RXWBFLAG_DEST)) ==
 981                     cpu_to_le16(RXWBFLAG_DEST_MUL))
 982                         ++(NET_STAT(jme).multicast);
 983
 984                 NET_STAT(jme).rx_bytes += framesize;
 985                 ++(NET_STAT(jme).rx_packets);
 986         }
 987
 988         jme_set_clean_rxdesc(jme, idx);
 989
 990 }
 991
 992 static int
 993 jme_process_receive(struct jme_adapter *jme, int limit)
 994 {
 995         struct jme_ring *rxring = &(jme->rxring[0]);
 996         struct rxdesc *rxdesc = rxring->desc;
 997         int i, j, ccnt, desccnt, mask = jme->rx_ring_mask;
 998
 999         if (unlikely(!atomic_dec_and_test(&jme->rx_cleaning)))
1000                 goto out_inc;
1001
1002         if (unlikely(atomic_read(&jme->link_changing) != 1))
1003                 goto out_inc;
1004
1005         if (unlikely(!netif_carrier_ok(jme->dev)))
1006                 goto out_inc;
1007
1008         i = atomic_read(&rxring->next_to_clean);
1009         while (limit > 0) {
1010                 rxdesc = rxring->desc;
1011                 rxdesc += i;
1012
1013                 if ((rxdesc->descwb.flags & cpu_to_le16(RXWBFLAG_OWN)) ||
1014                 !(rxdesc->descwb.desccnt & RXWBDCNT_WBCPL))
1015                         goto out;
1016                 --limit;
1017
1018                 desccnt = rxdesc->descwb.desccnt & RXWBDCNT_DCNT;
1019
1020                 if (unlikely(desccnt > 1 ||
1021                 rxdesc->descwb.errstat & RXWBERR_ALLERR)) {
1022
1023                         if (rxdesc->descwb.errstat & RXWBERR_CRCERR)
1024                                 ++(NET_STAT(jme).rx_crc_errors);
1025                         else if (rxdesc->descwb.errstat & RXWBERR_OVERUN)
1026                                 ++(NET_STAT(jme).rx_fifo_errors);
1027                         else
1028                                 ++(NET_STAT(jme).rx_errors);
1029
1030                         if (desccnt > 1)
1031                                 limit -= desccnt - 1;
1032
1033                         for (j = i, ccnt = desccnt ; ccnt-- ; ) {
1034                                 jme_set_clean_rxdesc(jme, j);
1035                                 j = (j + 1) & (mask);
1036                         }
1037
1038                 } else {
1039                         jme_alloc_and_feed_skb(jme, i);
1040                 }
1041
1042                 i = (i + desccnt) & (mask);
1043         }
1044
1045 out:
1046         atomic_set(&rxring->next_to_clean, i);
1047
1048 out_inc:
1049         atomic_inc(&jme->rx_cleaning);
1050
1051         return limit > 0 ? limit : 0;
1052
1053 }
1054
1055 static void
1056 jme_attempt_pcc(struct dynpcc_info *dpi, int atmp)
1057 {
1058         if (likely(atmp == dpi->cur)) {
1059                 dpi->cnt = 0;
1060                 return;
1061         }
1062
1063         if (dpi->attempt == atmp) {
1064                 ++(dpi->cnt);
1065         } else {
1066                 dpi->attempt = atmp;
1067                 dpi->cnt = 0;
1068         }
1069
1070 }
1071
1072 static void
1073 jme_dynamic_pcc(struct jme_adapter *jme)
1074 {
1075         register struct dynpcc_info *dpi = &(jme->dpi);
1076
1077         if ((NET_STAT(jme).rx_bytes - dpi->last_bytes) > PCC_P3_THRESHOLD)
1078                 jme_attempt_pcc(dpi, PCC_P3);
1079         else if ((NET_STAT(jme).rx_packets - dpi->last_pkts) > PCC_P2_THRESHOLD ||
1080                  dpi->intr_cnt > PCC_INTR_THRESHOLD)
1081                 jme_attempt_pcc(dpi, PCC_P2);
1082         else
1083                 jme_attempt_pcc(dpi, PCC_P1);
1084
1085         if (unlikely(dpi->attempt != dpi->cur && dpi->cnt > 5)) {
1086                 if (dpi->attempt < dpi->cur)
1087                         tasklet_schedule(&jme->rxclean_task);
1088                 jme_set_rx_pcc(jme, dpi->attempt);
1089                 dpi->cur = dpi->attempt;
1090                 dpi->cnt = 0;
1091         }
1092 }
1093
1094 static void
1095 jme_start_pcc_timer(struct jme_adapter *jme)
1096 {
1097         struct dynpcc_info *dpi = &(jme->dpi);
1098         dpi->last_bytes         = NET_STAT(jme).rx_bytes;
1099         dpi->last_pkts          = NET_STAT(jme).rx_packets;
1100         dpi->intr_cnt           = 0;
1101         jwrite32(jme, JME_TMCSR,
1102                 TMCSR_EN | ((0xFFFFFF - PCC_INTERVAL_US) & TMCSR_CNT));
1103 }
1104
1105 static inline void
1106 jme_stop_pcc_timer(struct jme_adapter *jme)
1107 {
1108         jwrite32(jme, JME_TMCSR, 0);
1109 }
1110
1111 static void
1112 jme_shutdown_nic(struct jme_adapter *jme)
1113 {
1114         u32 phylink;
1115
1116         phylink = jme_linkstat_from_phy(jme);
1117
1118         if (!(phylink & PHY_LINK_UP)) {
1119                 /*
1120                  * Disable all interrupt before issue timer
1121                  */
1122                 jme_stop_irq(jme);
1123                 jwrite32(jme, JME_TIMER2, TMCSR_EN | 0xFFFFFE);
1124         }
1125 }
1126
1127 static void
1128 jme_pcc_tasklet(unsigned long arg)
1129 {
1130         struct jme_adapter *jme = (struct jme_adapter *)arg;
1131         struct net_device *netdev = jme->dev;
1132
1133         if (unlikely(test_bit(JME_FLAG_SHUTDOWN, &jme->flags))) {
1134                 jme_shutdown_nic(jme);
1135                 return;
1136         }
1137
1138         if (unlikely(!netif_carrier_ok(netdev) ||
1139                 (atomic_read(&jme->link_changing) != 1)
1140         )) {
1141                 jme_stop_pcc_timer(jme);
1142                 return;
1143         }
1144
1145         if (!(test_bit(JME_FLAG_POLL, &jme->flags)))
1146                 jme_dynamic_pcc(jme);
1147
1148         jme_start_pcc_timer(jme);
1149 }
1150
1151 static inline void
1152 jme_polling_mode(struct jme_adapter *jme)
1153 {
1154         jme_set_rx_pcc(jme, PCC_OFF);
1155 }
1156
1157 static inline void
1158 jme_interrupt_mode(struct jme_adapter *jme)
1159 {
1160         jme_set_rx_pcc(jme, PCC_P1);
1161 }
1162
1163 static inline int
1164 jme_pseudo_hotplug_enabled(struct jme_adapter *jme)
1165 {
1166         u32 apmc;
1167         apmc = jread32(jme, JME_APMC);
1168         return apmc & JME_APMC_PSEUDO_HP_EN;
1169 }
1170
1171 static void
1172 jme_start_shutdown_timer(struct jme_adapter *jme)
1173 {
1174         u32 apmc;
1175
1176         apmc = jread32(jme, JME_APMC) | JME_APMC_PCIE_SD_EN;
1177         apmc &= ~JME_APMC_EPIEN_CTRL;
1178         if (!no_extplug) {
1179                 jwrite32f(jme, JME_APMC, apmc | JME_APMC_EPIEN_CTRL_EN);
1180                 wmb();
1181         }
1182         jwrite32f(jme, JME_APMC, apmc);
1183
1184         jwrite32f(jme, JME_TIMER2, 0);
1185         set_bit(JME_FLAG_SHUTDOWN, &jme->flags);
1186         jwrite32(jme, JME_TMCSR,
1187                 TMCSR_EN | ((0xFFFFFF - APMC_PHP_SHUTDOWN_DELAY) & TMCSR_CNT));
1188 }
1189
1190 static void
1191 jme_stop_shutdown_timer(struct jme_adapter *jme)
1192 {
1193         u32 apmc;
1194
1195         jwrite32f(jme, JME_TMCSR, 0);
1196         jwrite32f(jme, JME_TIMER2, 0);
1197         clear_bit(JME_FLAG_SHUTDOWN, &jme->flags);
1198
1199         apmc = jread32(jme, JME_APMC);
1200         apmc &= ~(JME_APMC_PCIE_SD_EN | JME_APMC_EPIEN_CTRL);
1201         jwrite32f(jme, JME_APMC, apmc | JME_APMC_EPIEN_CTRL_DIS);
1202         wmb();
1203         jwrite32f(jme, JME_APMC, apmc);
1204 }
1205
1206 static void
1207 jme_link_change_tasklet(unsigned long arg)
1208 {
1209         struct jme_adapter *jme = (struct jme_adapter *)arg;
1210         struct net_device *netdev = jme->dev;
1211         int rc;
1212
1213         while (!atomic_dec_and_test(&jme->link_changing)) {
1214                 atomic_inc(&jme->link_changing);
1215 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,33)
1216                 msg_intr(jme, "Get link change lock failed.\n");
1217 #else
1218                 netif_info(jme, intr, jme->dev, "Get link change lock failed.\n");
1219 #endif
1220                 while (atomic_read(&jme->link_changing) != 1)
1221 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,33)
1222                         msg_intr(jme, "Waiting link change lock.\n");
1223 #else
1224                         netif_info(jme, intr, jme->dev, "Waiting link change lock.\n");
1225 #endif
1226         }
1227
1228         if (jme_check_link(netdev, 1) && jme->old_mtu == netdev->mtu)
1229                 goto out;
1230
1231         jme->old_mtu = netdev->mtu;
1232         netif_stop_queue(netdev);
1233         if (jme_pseudo_hotplug_enabled(jme))
1234                 jme_stop_shutdown_timer(jme);
1235
1236         jme_stop_pcc_timer(jme);
1237         tasklet_disable(&jme->txclean_task);
1238         tasklet_disable(&jme->rxclean_task);
1239         tasklet_disable(&jme->rxempty_task);
1240
1241         if (netif_carrier_ok(netdev)) {
1242                 jme_reset_ghc_speed(jme);
1243                 jme_disable_rx_engine(jme);
1244                 jme_disable_tx_engine(jme);
1245                 jme_reset_mac_processor(jme);
1246                 jme_free_rx_resources(jme);
1247                 jme_free_tx_resources(jme);
1248
1249                 if (test_bit(JME_FLAG_POLL, &jme->flags))
1250                         jme_polling_mode(jme);
1251
1252                 netif_carrier_off(netdev);
1253         }
1254
1255         jme_check_link(netdev, 0);
1256         if (netif_carrier_ok(netdev)) {
1257                 rc = jme_setup_rx_resources(jme);
1258                 if (rc) {
1259                         jeprintk(jme->pdev, "Allocating resources for RX error"
1260                                 ", Device STOPPED!\n");
1261                         goto out_enable_tasklet;
1262                 }
1263
1264                 rc = jme_setup_tx_resources(jme);
1265                 if (rc) {
1266                         jeprintk(jme->pdev, "Allocating resources for TX error"
1267                                 ", Device STOPPED!\n");
1268                         goto err_out_free_rx_resources;
1269                 }
1270
1271                 jme_enable_rx_engine(jme);
1272                 jme_enable_tx_engine(jme);
1273
1274                 netif_start_queue(netdev);
1275
1276                 if (test_bit(JME_FLAG_POLL, &jme->flags))
1277                         jme_interrupt_mode(jme);
1278
1279                 jme_start_pcc_timer(jme);
1280         } else if (jme_pseudo_hotplug_enabled(jme)) {
1281                 jme_start_shutdown_timer(jme);
1282         }
1283
1284         goto out_enable_tasklet;
1285
1286 err_out_free_rx_resources:
1287         jme_free_rx_resources(jme);
1288 out_enable_tasklet:
1289         tasklet_enable(&jme->txclean_task);
1290         tasklet_hi_enable(&jme->rxclean_task);
1291         tasklet_hi_enable(&jme->rxempty_task);
1292 out:
1293         atomic_inc(&jme->link_changing);
1294 }
1295
1296 static void
1297 jme_rx_clean_tasklet(unsigned long arg)
1298 {
1299         struct jme_adapter *jme = (struct jme_adapter *)arg;
1300         struct dynpcc_info *dpi = &(jme->dpi);
1301
1302         jme_process_receive(jme, jme->rx_ring_size);
1303         ++(dpi->intr_cnt);
1304
1305 }
1306
1307 static int
1308 jme_poll(JME_NAPI_HOLDER(holder), JME_NAPI_WEIGHT(budget))
1309 {
1310         struct jme_adapter *jme = jme_napi_priv(holder);
1311         DECLARE_NETDEV
1312         int rest;
1313
1314         rest = jme_process_receive(jme, JME_NAPI_WEIGHT_VAL(budget));
1315
1316         while (atomic_read(&jme->rx_empty) > 0) {
1317                 atomic_dec(&jme->rx_empty);
1318                 ++(NET_STAT(jme).rx_dropped);
1319                 jme_restart_rx_engine(jme);
1320         }
1321         atomic_inc(&jme->rx_empty);
1322
1323         if (rest) {
1324                 JME_RX_COMPLETE(netdev, holder);
1325                 jme_interrupt_mode(jme);
1326         }
1327
1328         JME_NAPI_WEIGHT_SET(budget, rest);
1329         return JME_NAPI_WEIGHT_VAL(budget) - rest;
1330 }
1331
1332 static void
1333 jme_rx_empty_tasklet(unsigned long arg)
1334 {
1335         struct jme_adapter *jme = (struct jme_adapter *)arg;
1336
1337         if (unlikely(atomic_read(&jme->link_changing) != 1))
1338                 return;
1339
1340         if (unlikely(!netif_carrier_ok(jme->dev)))
1341                 return;
1342
1343 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,33)
1344         msg_rx_status(jme, "RX Queue Full!\n");
1345 #else
1346         netif_info(jme, rx_status, jme->dev, "RX Queue Full!\n");
1347 #endif
1348
1349         jme_rx_clean_tasklet(arg);
1350
1351         while (atomic_read(&jme->rx_empty) > 0) {
1352                 atomic_dec(&jme->rx_empty);
1353                 ++(NET_STAT(jme).rx_dropped);
1354                 jme_restart_rx_engine(jme);
1355         }
1356         atomic_inc(&jme->rx_empty);
1357 }
1358
1359 static void
1360 jme_wake_queue_if_stopped(struct jme_adapter *jme)
1361 {
1362         struct jme_ring *txring = &(jme->txring[0]);
1363
1364         smp_wmb();
1365         if (unlikely(netif_queue_stopped(jme->dev) &&
1366         atomic_read(&txring->nr_free) >= (jme->tx_wake_threshold))) {
1367 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,33)
1368                 msg_tx_done(jme, "TX Queue Waked.\n");
1369 #else
1370                 netif_info(jme, tx_done, jme->dev, "TX Queue Waked.\n");
1371 #endif
1372                 netif_wake_queue(jme->dev);
1373         }
1374
1375 }
1376
1377 static void
1378 jme_tx_clean_tasklet(unsigned long arg)
1379 {
1380         struct jme_adapter *jme = (struct jme_adapter *)arg;
1381         struct jme_ring *txring = &(jme->txring[0]);
1382         struct txdesc *txdesc = txring->desc;
1383         struct jme_buffer_info *txbi = txring->bufinf, *ctxbi, *ttxbi;
1384         int i, j, cnt = 0, max, err, mask;
1385
1386         tx_dbg(jme, "Into txclean.\n");
1387
1388         if (unlikely(!atomic_dec_and_test(&jme->tx_cleaning)))
1389                 goto out;
1390
1391         if (unlikely(atomic_read(&jme->link_changing) != 1))
1392                 goto out;
1393
1394         if (unlikely(!netif_carrier_ok(jme->dev)))
1395                 goto out;
1396
1397         max = jme->tx_ring_size - atomic_read(&txring->nr_free);
1398         mask = jme->tx_ring_mask;
1399
1400         for (i = atomic_read(&txring->next_to_clean) ; cnt < max ; ) {
1401
1402                 ctxbi = txbi + i;
1403
1404                 if (likely(ctxbi->skb &&
1405                 !(txdesc[i].descwb.flags & TXWBFLAG_OWN))) {
1406
1407                         tx_dbg(jme, "txclean: %d+%d@%lu\n",
1408                                         i, ctxbi->nr_desc, jiffies);
1409
1410                         err = txdesc[i].descwb.flags & TXWBFLAG_ALLERR;
1411
1412                         for (j = 1 ; j < ctxbi->nr_desc ; ++j) {
1413                                 ttxbi = txbi + ((i + j) & (mask));
1414                                 txdesc[(i + j) & (mask)].dw[0] = 0;
1415
1416                                 pci_unmap_page(jme->pdev,
1417                                                  ttxbi->mapping,
1418                                                  ttxbi->len,
1419                                                  PCI_DMA_TODEVICE);
1420
1421                                 ttxbi->mapping = 0;
1422                                 ttxbi->len = 0;
1423                         }
1424
1425                         dev_kfree_skb(ctxbi->skb);
1426
1427                         cnt += ctxbi->nr_desc;
1428
1429                         if (unlikely(err)) {
1430                                 ++(NET_STAT(jme).tx_carrier_errors);
1431                         } else {
1432                                 ++(NET_STAT(jme).tx_packets);
1433                                 NET_STAT(jme).tx_bytes += ctxbi->len;
1434                         }
1435
1436                         ctxbi->skb = NULL;
1437                         ctxbi->len = 0;
1438                         ctxbi->start_xmit = 0;
1439
1440                 } else {
1441                         break;
1442                 }
1443
1444                 i = (i + ctxbi->nr_desc) & mask;
1445
1446                 ctxbi->nr_desc = 0;
1447         }
1448
1449         tx_dbg(jme, "txclean: done %d@%lu.\n", i, jiffies);
1450         atomic_set(&txring->next_to_clean, i);
1451         atomic_add(cnt, &txring->nr_free);
1452
1453         jme_wake_queue_if_stopped(jme);
1454
1455 out:
1456         atomic_inc(&jme->tx_cleaning);
1457 }
1458
1459 static void
1460 jme_intr_msi(struct jme_adapter *jme, u32 intrstat)
1461 {
1462         /*
1463          * Disable interrupt
1464          */
1465         jwrite32f(jme, JME_IENC, INTR_ENABLE);
1466
1467         if (intrstat & (INTR_LINKCH | INTR_SWINTR)) {
1468                 /*
1469                  * Link change event is critical
1470                  * all other events are ignored
1471                  */
1472                 jwrite32(jme, JME_IEVE, intrstat);
1473                 tasklet_schedule(&jme->linkch_task);
1474                 goto out_reenable;
1475         }
1476
1477         if (intrstat & INTR_TMINTR) {
1478                 jwrite32(jme, JME_IEVE, INTR_TMINTR);
1479                 tasklet_schedule(&jme->pcc_task);
1480         }
1481
1482         if (intrstat & (INTR_PCCTXTO | INTR_PCCTX)) {
1483                 jwrite32(jme, JME_IEVE, INTR_PCCTXTO | INTR_PCCTX | INTR_TX0);
1484                 tasklet_schedule(&jme->txclean_task);
1485         }
1486
1487         if ((intrstat & (INTR_PCCRX0TO | INTR_PCCRX0 | INTR_RX0EMP))) {
1488                 jwrite32(jme, JME_IEVE, (intrstat & (INTR_PCCRX0TO |
1489                                                      INTR_PCCRX0 |
1490                                                      INTR_RX0EMP)) |
1491                                         INTR_RX0);
1492         }
1493
1494         if (test_bit(JME_FLAG_POLL, &jme->flags)) {
1495                 if (intrstat & INTR_RX0EMP)
1496                         atomic_inc(&jme->rx_empty);
1497
1498                 if ((intrstat & (INTR_PCCRX0TO | INTR_PCCRX0 | INTR_RX0EMP))) {
1499                         if (likely(JME_RX_SCHEDULE_PREP(jme))) {
1500                                 jme_polling_mode(jme);
1501                                 JME_RX_SCHEDULE(jme);
1502                         }
1503                 }
1504         } else {
1505                 if (intrstat & INTR_RX0EMP) {
1506                         atomic_inc(&jme->rx_empty);
1507                         tasklet_hi_schedule(&jme->rxempty_task);
1508                 } else if (intrstat & (INTR_PCCRX0TO | INTR_PCCRX0)) {
1509                         tasklet_hi_schedule(&jme->rxclean_task);
1510                 }
1511         }
1512
1513 out_reenable:
1514         /*
1515          * Re-enable interrupt
1516          */
1517         jwrite32f(jme, JME_IENS, INTR_ENABLE);
1518 }
1519
1520 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,18)
1521 static irqreturn_t
1522 jme_intr(int irq, void *dev_id, struct pt_regs *regs)
1523 #else
1524 static irqreturn_t
1525 jme_intr(int irq, void *dev_id)
1526 #endif
1527 {
1528         struct net_device *netdev = dev_id;
1529         struct jme_adapter *jme = netdev_priv(netdev);
1530         u32 intrstat;
1531
1532         intrstat = jread32(jme, JME_IEVE);
1533
1534         /*
1535          * Check if it's really an interrupt for us
1536          */
1537         if (unlikely((intrstat & INTR_ENABLE) == 0))
1538                 return IRQ_NONE;
1539
1540         /*
1541          * Check if the device still exist
1542          */
1543         if (unlikely(intrstat == ~((typeof(intrstat))0)))
1544                 return IRQ_NONE;
1545
1546         jme_intr_msi(jme, intrstat);
1547
1548         return IRQ_HANDLED;
1549 }
1550
1551 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,18)
1552 static irqreturn_t
1553 jme_msi(int irq, void *dev_id, struct pt_regs *regs)
1554 #else
1555 static irqreturn_t
1556 jme_msi(int irq, void *dev_id)
1557 #endif
1558 {
1559         struct net_device *netdev = dev_id;
1560         struct jme_adapter *jme = netdev_priv(netdev);
1561         u32 intrstat;
1562
1563         intrstat = jread32(jme, JME_IEVE);
1564
1565         jme_intr_msi(jme, intrstat);
1566
1567         return IRQ_HANDLED;
1568 }
1569
1570 static void
1571 jme_reset_link(struct jme_adapter *jme)
1572 {
1573         jwrite32(jme, JME_TMCSR, TMCSR_SWIT);
1574 }
1575
1576 static void
1577 jme_restart_an(struct jme_adapter *jme)
1578 {
1579         u32 bmcr;
1580
1581         spin_lock_bh(&jme->phy_lock);
1582         bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
1583         bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
1584         jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, bmcr);
1585         spin_unlock_bh(&jme->phy_lock);
1586 }
1587
1588 static int
1589 jme_request_irq(struct jme_adapter *jme)
1590 {
1591         int rc;
1592         struct net_device *netdev = jme->dev;
1593 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,18)
1594         irqreturn_t (*handler)(int, void *, struct pt_regs *) = jme_intr;
1595         int irq_flags = SA_SHIRQ;
1596 #else
1597         irq_handler_t handler = jme_intr;
1598         int irq_flags = IRQF_SHARED;
1599 #endif
1600
1601         if (!pci_enable_msi(jme->pdev)) {
1602                 set_bit(JME_FLAG_MSI, &jme->flags);
1603                 handler = jme_msi;
1604                 irq_flags = 0;
1605         }
1606
1607         rc = request_irq(jme->pdev->irq, handler, irq_flags, netdev->name,
1608                           netdev);
1609         if (rc) {
1610                 jeprintk(jme->pdev,
1611                         "Unable to request %s interrupt (return: %d)\n",
1612                         test_bit(JME_FLAG_MSI, &jme->flags) ? "MSI" : "INTx",
1613                         rc);
1614
1615                 if (test_bit(JME_FLAG_MSI, &jme->flags)) {
1616                         pci_disable_msi(jme->pdev);
1617                         clear_bit(JME_FLAG_MSI, &jme->flags);
1618                 }
1619         } else {
1620                 netdev->irq = jme->pdev->irq;
1621         }
1622
1623         return rc;
1624 }
1625
1626 static void
1627 jme_free_irq(struct jme_adapter *jme)
1628 {
1629         free_irq(jme->pdev->irq, jme->dev);
1630         if (test_bit(JME_FLAG_MSI, &jme->flags)) {
1631                 pci_disable_msi(jme->pdev);
1632                 clear_bit(JME_FLAG_MSI, &jme->flags);
1633                 jme->dev->irq = jme->pdev->irq;
1634         }
1635 }
1636
1637 static int
1638 jme_open(struct net_device *netdev)
1639 {
1640         struct jme_adapter *jme = netdev_priv(netdev);
1641         int rc;
1642
1643         jme_clear_pm(jme);
1644         JME_NAPI_ENABLE(jme);
1645
1646         tasklet_enable(&jme->linkch_task);
1647         tasklet_enable(&jme->txclean_task);
1648         tasklet_hi_enable(&jme->rxclean_task);
1649         tasklet_hi_enable(&jme->rxempty_task);
1650
1651         rc = jme_request_irq(jme);
1652         if (rc)
1653                 goto err_out;
1654
1655         jme_start_irq(jme);
1656
1657         if (test_bit(JME_FLAG_SSET, &jme->flags))
1658                 jme_set_settings(netdev, &jme->old_ecmd);
1659         else
1660                 jme_reset_phy_processor(jme);
1661
1662         jme_reset_link(jme);
1663
1664         return 0;
1665
1666 err_out:
1667         netif_stop_queue(netdev);
1668         netif_carrier_off(netdev);
1669         return rc;
1670 }
1671
1672 #ifdef CONFIG_PM
1673 static void
1674 jme_set_100m_half(struct jme_adapter *jme)
1675 {
1676         u32 bmcr, tmp;
1677
1678         bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
1679         tmp = bmcr & ~(BMCR_ANENABLE | BMCR_SPEED100 |
1680                        BMCR_SPEED1000 | BMCR_FULLDPLX);
1681         tmp |= BMCR_SPEED100;
1682
1683         if (bmcr != tmp)
1684                 jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, tmp);
1685
1686         if (jme->fpgaver)
1687                 jwrite32(jme, JME_GHC, GHC_SPEED_100M | GHC_LINK_POLL);
1688         else
1689                 jwrite32(jme, JME_GHC, GHC_SPEED_100M);
1690 }
1691
1692 #define JME_WAIT_LINK_TIME 2000 /* 2000ms */
1693 static void
1694 jme_wait_link(struct jme_adapter *jme)
1695 {
1696         u32 phylink, to = JME_WAIT_LINK_TIME;
1697
1698         mdelay(1000);
1699         phylink = jme_linkstat_from_phy(jme);
1700         while (!(phylink & PHY_LINK_UP) && (to -= 10) > 0) {
1701                 mdelay(10);
1702                 phylink = jme_linkstat_from_phy(jme);
1703         }
1704 }
1705 #endif
1706
1707 static inline void
1708 jme_phy_off(struct jme_adapter *jme)
1709 {
1710         jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, BMCR_PDOWN);
1711 }
1712
1713 static int
1714 jme_close(struct net_device *netdev)
1715 {
1716         struct jme_adapter *jme = netdev_priv(netdev);
1717
1718         netif_stop_queue(netdev);
1719         netif_carrier_off(netdev);
1720
1721         jme_stop_irq(jme);
1722         jme_free_irq(jme);
1723
1724         JME_NAPI_DISABLE(jme);
1725
1726         tasklet_disable(&jme->linkch_task);
1727         tasklet_disable(&jme->txclean_task);
1728         tasklet_disable(&jme->rxclean_task);
1729         tasklet_disable(&jme->rxempty_task);
1730
1731         jme_reset_ghc_speed(jme);
1732         jme_disable_rx_engine(jme);
1733         jme_disable_tx_engine(jme);
1734         jme_reset_mac_processor(jme);
1735         jme_free_rx_resources(jme);
1736         jme_free_tx_resources(jme);
1737         jme->phylink = 0;
1738         jme_phy_off(jme);
1739
1740         return 0;
1741 }
1742
1743 static int
1744 jme_alloc_txdesc(struct jme_adapter *jme,
1745                         struct sk_buff *skb)
1746 {
1747         struct jme_ring *txring = &(jme->txring[0]);
1748         int idx, nr_alloc, mask = jme->tx_ring_mask;
1749
1750         idx = txring->next_to_use;
1751         nr_alloc = skb_shinfo(skb)->nr_frags + 2;
1752
1753         if (unlikely(atomic_read(&txring->nr_free) < nr_alloc))
1754                 return -1;
1755
1756         atomic_sub(nr_alloc, &txring->nr_free);
1757
1758         txring->next_to_use = (txring->next_to_use + nr_alloc) & mask;
1759
1760         return idx;
1761 }
1762
1763 static void
1764 jme_fill_tx_map(struct pci_dev *pdev,
1765                 struct txdesc *txdesc,
1766                 struct jme_buffer_info *txbi,
1767                 struct page *page,
1768                 u32 page_offset,
1769                 u32 len,
1770                 u8 hidma)
1771 {
1772         dma_addr_t dmaaddr;
1773
1774         dmaaddr = pci_map_page(pdev,
1775                                 page,
1776                                 page_offset,
1777                                 len,
1778                                 PCI_DMA_TODEVICE);
1779
1780         pci_dma_sync_single_for_device(pdev,
1781                                        dmaaddr,
1782                                        len,
1783                                        PCI_DMA_TODEVICE);
1784
1785         txdesc->dw[0] = 0;
1786         txdesc->dw[1] = 0;
1787         txdesc->desc2.flags     = TXFLAG_OWN;
1788         txdesc->desc2.flags     |= (hidma) ? TXFLAG_64BIT : 0;
1789         txdesc->desc2.datalen   = cpu_to_le16(len);
1790         txdesc->desc2.bufaddrh  = cpu_to_le32((__u64)dmaaddr >> 32);
1791         txdesc->desc2.bufaddrl  = cpu_to_le32(
1792                                         (__u64)dmaaddr & 0xFFFFFFFFUL);
1793
1794         txbi->mapping = dmaaddr;
1795         txbi->len = len;
1796 }
1797
1798 static void
1799 jme_map_tx_skb(struct jme_adapter *jme, struct sk_buff *skb, int idx)
1800 {
1801         struct jme_ring *txring = &(jme->txring[0]);
1802         struct txdesc *txdesc = txring->desc, *ctxdesc;
1803         struct jme_buffer_info *txbi = txring->bufinf, *ctxbi;
1804         u8 hidma = jme->dev->features & NETIF_F_HIGHDMA;
1805         int i, nr_frags = skb_shinfo(skb)->nr_frags;
1806         int mask = jme->tx_ring_mask;
1807         struct skb_frag_struct *frag;
1808         u32 len;
1809
1810         for (i = 0 ; i < nr_frags ; ++i) {
1811                 frag = &skb_shinfo(skb)->frags[i];
1812                 ctxdesc = txdesc + ((idx + i + 2) & (mask));
1813                 ctxbi = txbi + ((idx + i + 2) & (mask));
1814
1815                 jme_fill_tx_map(jme->pdev, ctxdesc, ctxbi, frag->page,
1816                                  frag->page_offset, frag->size, hidma);
1817         }
1818
1819         len = skb_is_nonlinear(skb) ? skb_headlen(skb) : skb->len;
1820         ctxdesc = txdesc + ((idx + 1) & (mask));
1821         ctxbi = txbi + ((idx + 1) & (mask));
1822         jme_fill_tx_map(jme->pdev, ctxdesc, ctxbi, virt_to_page(skb->data),
1823                         offset_in_page(skb->data), len, hidma);
1824
1825 }
1826
1827 static int
1828 jme_expand_header(struct jme_adapter *jme, struct sk_buff *skb)
1829 {
1830         if (unlikely(
1831 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,17)
1832         skb_shinfo(skb)->tso_size
1833 #else
1834         skb_shinfo(skb)->gso_size
1835 #endif
1836                         && skb_header_cloned(skb) &&
1837                         pskb_expand_head(skb, 0, 0, GFP_ATOMIC))) {
1838                 dev_kfree_skb(skb);
1839                 return -1;
1840         }
1841
1842         return 0;
1843 }
1844
1845 static int
1846 jme_tx_tso(struct sk_buff *skb, __le16 *mss, u8 *flags)
1847 {
1848 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,17)
1849         *mss = cpu_to_le16(skb_shinfo(skb)->tso_size << TXDESC_MSS_SHIFT);
1850 #else
1851         *mss = cpu_to_le16(skb_shinfo(skb)->gso_size << TXDESC_MSS_SHIFT);
1852 #endif
1853         if (*mss) {
1854                 *flags |= TXFLAG_LSEN;
1855
1856                 if (skb->protocol == htons(ETH_P_IP)) {
1857                         struct iphdr *iph = ip_hdr(skb);
1858
1859                         iph->check = 0;
1860                         tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
1861                                                                 iph->daddr, 0,
1862                                                                 IPPROTO_TCP,
1863                                                                 0);
1864                 } else {
1865                         struct ipv6hdr *ip6h = ipv6_hdr(skb);
1866
1867                         tcp_hdr(skb)->check = ~csum_ipv6_magic(&ip6h->saddr,
1868                                                                 &ip6h->daddr, 0,
1869                                                                 IPPROTO_TCP,
1870                                                                 0);
1871                 }
1872
1873                 return 0;
1874         }
1875
1876         return 1;
1877 }
1878
1879 static void
1880 jme_tx_csum(struct jme_adapter *jme, struct sk_buff *skb, u8 *flags)
1881 {
1882 #ifdef CHECKSUM_PARTIAL
1883         if (skb->ip_summed == CHECKSUM_PARTIAL)
1884 #else
1885         if (skb->ip_summed == CHECKSUM_HW)
1886 #endif
1887         {
1888                 u8 ip_proto;
1889
1890 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,21)
1891                 if (skb->protocol == htons(ETH_P_IP))
1892                         ip_proto = ip_hdr(skb)->protocol;
1893                 else if (skb->protocol == htons(ETH_P_IPV6))
1894                         ip_proto = ipv6_hdr(skb)->nexthdr;
1895                 else
1896                         ip_proto = 0;
1897 #else
1898                 switch (skb->protocol) {
1899                 case htons(ETH_P_IP):
1900                         ip_proto = ip_hdr(skb)->protocol;
1901                         break;
1902                 case htons(ETH_P_IPV6):
1903                         ip_proto = ipv6_hdr(skb)->nexthdr;
1904                         break;
1905                 default:
1906                         ip_proto = 0;
1907                         break;
1908                 }
1909 #endif
1910
1911                 switch (ip_proto) {
1912                 case IPPROTO_TCP:
1913                         *flags |= TXFLAG_TCPCS;
1914                         break;
1915                 case IPPROTO_UDP:
1916                         *flags |= TXFLAG_UDPCS;
1917                         break;
1918                 default:
1919 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,33)
1920                         msg_tx_err(jme, "Error upper layer protocol.\n");
1921 #else
1922                         netif_err(jme, tx_err, jme->dev, "Error upper layer protocol.\n");
1923 #endif
1924                         break;
1925                 }
1926         }
1927 }
1928
1929 static inline void
1930 jme_tx_vlan(struct sk_buff *skb, __le16 *vlan, u8 *flags)
1931 {
1932         if (vlan_tx_tag_present(skb)) {
1933                 *flags |= TXFLAG_TAGON;
1934                 *vlan = cpu_to_le16(vlan_tx_tag_get(skb));
1935         }
1936 }
1937
1938 static int
1939 jme_fill_tx_desc(struct jme_adapter *jme, struct sk_buff *skb, int idx)
1940 {
1941         struct jme_ring *txring = &(jme->txring[0]);
1942         struct txdesc *txdesc;
1943         struct jme_buffer_info *txbi;
1944         u8 flags;
1945
1946         txdesc = (struct txdesc *)txring->desc + idx;
1947         txbi = txring->bufinf + idx;
1948
1949         txdesc->dw[0] = 0;
1950         txdesc->dw[1] = 0;
1951         txdesc->dw[2] = 0;
1952         txdesc->dw[3] = 0;
1953         txdesc->desc1.pktsize = cpu_to_le16(skb->len);
1954         /*
1955          * Set OWN bit at final.
1956          * When kernel transmit faster than NIC.
1957          * And NIC trying to send this descriptor before we tell
1958          * it to start sending this TX queue.
1959          * Other fields are already filled correctly.
1960          */
1961         wmb();
1962         flags = TXFLAG_OWN | TXFLAG_INT;
1963         /*
1964          * Set checksum flags while not tso
1965          */
1966         if (jme_tx_tso(skb, &txdesc->desc1.mss, &flags))
1967                 jme_tx_csum(jme, skb, &flags);
1968         jme_tx_vlan(skb, &txdesc->desc1.vlan, &flags);
1969         jme_map_tx_skb(jme, skb, idx);
1970         txdesc->desc1.flags = flags;
1971         /*
1972          * Set tx buffer info after telling NIC to send
1973          * For better tx_clean timing
1974          */
1975         wmb();
1976         txbi->nr_desc = skb_shinfo(skb)->nr_frags + 2;
1977         txbi->skb = skb;
1978         txbi->len = skb->len;
1979         txbi->start_xmit = jiffies;
1980         if (!txbi->start_xmit)
1981                 txbi->start_xmit = (0UL-1);
1982
1983         return 0;
1984 }
1985
1986 static void
1987 jme_stop_queue_if_full(struct jme_adapter *jme)
1988 {
1989         struct jme_ring *txring = &(jme->txring[0]);
1990         struct jme_buffer_info *txbi = txring->bufinf;
1991         int idx = atomic_read(&txring->next_to_clean);
1992
1993         txbi += idx;
1994
1995         smp_wmb();
1996         if (unlikely(atomic_read(&txring->nr_free) < (MAX_SKB_FRAGS+2))) {
1997                 netif_stop_queue(jme->dev);
1998 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,33)
1999                 msg_tx_queued(jme, "TX Queue Paused.\n");
2000 #else
2001                 netif_info(jme, tx_queued, jme->dev, "TX Queue Paused.\n");
2002 #endif
2003                 smp_wmb();
2004                 if (atomic_read(&txring->nr_free)
2005                         >= (jme->tx_wake_threshold)) {
2006                         netif_wake_queue(jme->dev);
2007 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,33)
2008                         msg_tx_queued(jme, "TX Queue Fast Waked.\n");
2009 #else
2010                         netif_info(jme, tx_queued, jme->dev, "TX Queue Fast Waked.\n");
2011 #endif
2012                 }
2013         }
2014
2015         if (unlikely(txbi->start_xmit &&
2016                         (jiffies - txbi->start_xmit) >= TX_TIMEOUT &&
2017                         txbi->skb)) {
2018                 netif_stop_queue(jme->dev);
2019 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,33)
2020                 msg_tx_queued(jme, "TX Queue Stopped %d@%lu.\n", idx, jiffies);
2021 #else
2022                 netif_info(jme, tx_queued, jme->dev, "TX Queue Stopped %d@%lu.\n", idx, jiffies);
2023 #endif
2024         }
2025 }
2026
2027 /*
2028  * This function is already protected by netif_tx_lock()
2029  */
2030
2031 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,31)
2032 static int
2033 #else
2034 static netdev_tx_t
2035 #endif
2036 jme_start_xmit(struct sk_buff *skb, struct net_device *netdev)
2037 {
2038         struct jme_adapter *jme = netdev_priv(netdev);
2039         int idx;
2040
2041         if (unlikely(jme_expand_header(jme, skb))) {
2042                 ++(NET_STAT(jme).tx_dropped);
2043                 return NETDEV_TX_OK;
2044         }
2045
2046         idx = jme_alloc_txdesc(jme, skb);
2047
2048         if (unlikely(idx < 0)) {
2049                 netif_stop_queue(netdev);
2050 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,33)
2051                 msg_tx_err(jme, "BUG! Tx ring full when queue awake!\n");
2052 #else
2053                 netif_err(jme, tx_err, jme->dev, "BUG! Tx ring full when queue awake!\n");
2054 #endif
2055
2056                 return NETDEV_TX_BUSY;
2057         }
2058
2059         jme_fill_tx_desc(jme, skb, idx);
2060
2061         jwrite32(jme, JME_TXCS, jme->reg_txcs |
2062                                 TXCS_SELECT_QUEUE0 |
2063                                 TXCS_QUEUE0S |
2064                                 TXCS_ENABLE);
2065 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,29)
2066         netdev->trans_start = jiffies;
2067 #endif
2068
2069         tx_dbg(jme, "xmit: %d+%d@%lu\n", idx,
2070                         skb_shinfo(skb)->nr_frags + 2,
2071                         jiffies);
2072         jme_stop_queue_if_full(jme);
2073
2074         return NETDEV_TX_OK;
2075 }
2076
2077 static int
2078 jme_set_macaddr(struct net_device *netdev, void *p)
2079 {
2080         struct jme_adapter *jme = netdev_priv(netdev);
2081         struct sockaddr *addr = p;
2082         u32 val;
2083
2084         if (netif_running(netdev))
2085                 return -EBUSY;
2086
2087         spin_lock_bh(&jme->macaddr_lock);
2088         memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
2089
2090         val = (addr->sa_data[3] & 0xff) << 24 |
2091               (addr->sa_data[2] & 0xff) << 16 |
2092               (addr->sa_data[1] & 0xff) <<  8 |
2093               (addr->sa_data[0] & 0xff);
2094         jwrite32(jme, JME_RXUMA_LO, val);
2095         val = (addr->sa_data[5] & 0xff) << 8 |
2096               (addr->sa_data[4] & 0xff);
2097         jwrite32(jme, JME_RXUMA_HI, val);
2098         spin_unlock_bh(&jme->macaddr_lock);
2099
2100         return 0;
2101 }
2102
2103 static void
2104 jme_set_multi(struct net_device *netdev)
2105 {
2106         struct jme_adapter *jme = netdev_priv(netdev);
2107         u32 mc_hash[2] = {};
2108 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,33)
2109         int i;
2110 #endif
2111
2112         spin_lock_bh(&jme->rxmcs_lock);
2113
2114         jme->reg_rxmcs |= RXMCS_BRDFRAME | RXMCS_UNIFRAME;
2115
2116         if (netdev->flags & IFF_PROMISC) {
2117                 jme->reg_rxmcs |= RXMCS_ALLFRAME;
2118         } else if (netdev->flags & IFF_ALLMULTI) {
2119                 jme->reg_rxmcs |= RXMCS_ALLMULFRAME;
2120         } else if (netdev->flags & IFF_MULTICAST) {
2121 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,34)
2122                 struct dev_mc_list *mclist;
2123 #else
2124                 struct netdev_hw_addr *ha;
2125 #endif
2126                 int bit_nr;
2127
2128                 jme->reg_rxmcs |= RXMCS_MULFRAME | RXMCS_MULFILTERED;
2129 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,33)
2130                 for (i = 0, mclist = netdev->mc_list;
2131                         mclist && i < netdev->mc_count;
2132                         ++i, mclist = mclist->next) {
2133 #elif LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,34)
2134                 netdev_for_each_mc_addr(mclist, netdev) {
2135 #else
2136                 netdev_for_each_mc_addr(ha, netdev) {
2137 #endif
2138 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,34)
2139                         bit_nr = ether_crc(ETH_ALEN, mclist->dmi_addr) & 0x3F;
2140 #else
2141                         bit_nr = ether_crc(ETH_ALEN, ha->addr) & 0x3F;
2142 #endif
2143                         mc_hash[bit_nr >> 5] |= 1 << (bit_nr & 0x1F);
2144                 }
2145
2146                 jwrite32(jme, JME_RXMCHT_LO, mc_hash[0]);
2147                 jwrite32(jme, JME_RXMCHT_HI, mc_hash[1]);
2148         }
2149
2150         wmb();
2151         jwrite32(jme, JME_RXMCS, jme->reg_rxmcs);
2152
2153         spin_unlock_bh(&jme->rxmcs_lock);
2154 }
2155
2156 static int
2157 jme_change_mtu(struct net_device *netdev, int new_mtu)
2158 {
2159         struct jme_adapter *jme = netdev_priv(netdev);
2160
2161         if (new_mtu == jme->old_mtu)
2162                 return 0;
2163
2164         if (((new_mtu + ETH_HLEN) > MAX_ETHERNET_JUMBO_PACKET_SIZE) ||
2165                 ((new_mtu) < IPV6_MIN_MTU))
2166                 return -EINVAL;
2167
2168         if (new_mtu > 4000) {
2169                 jme->reg_rxcs &= ~RXCS_FIFOTHNP;
2170                 jme->reg_rxcs |= RXCS_FIFOTHNP_64QW;
2171                 jme_restart_rx_engine(jme);
2172         } else {
2173                 jme->reg_rxcs &= ~RXCS_FIFOTHNP;
2174                 jme->reg_rxcs |= RXCS_FIFOTHNP_128QW;
2175                 jme_restart_rx_engine(jme);
2176         }
2177
2178         if (new_mtu > 1900) {
2179                 netdev->features &= ~(NETIF_F_HW_CSUM |
2180                                 NETIF_F_TSO
2181 #ifdef NETIF_F_TSO6
2182                                 | NETIF_F_TSO6
2183 #endif
2184                                 );
2185         } else {
2186                 if (test_bit(JME_FLAG_TXCSUM, &jme->flags))
2187                         netdev->features |= NETIF_F_HW_CSUM;
2188                 if (test_bit(JME_FLAG_TSO, &jme->flags))
2189                         netdev->features |= NETIF_F_TSO
2190 #ifdef NETIF_F_TSO6
2191                                 | NETIF_F_TSO6
2192 #endif
2193                                 ;
2194         }
2195
2196         netdev->mtu = new_mtu;
2197         jme_reset_link(jme);
2198
2199         return 0;
2200 }
2201
2202 static void
2203 jme_tx_timeout(struct net_device *netdev)
2204 {
2205         struct jme_adapter *jme = netdev_priv(netdev);
2206
2207         jme->phylink = 0;
2208         jme_reset_phy_processor(jme);
2209         if (test_bit(JME_FLAG_SSET, &jme->flags))
2210                 jme_set_settings(netdev, &jme->old_ecmd);
2211
2212         /*
2213          * Force to Reset the link again
2214          */
2215         jme_reset_link(jme);
2216 }
2217
2218 static inline void jme_pause_rx(struct jme_adapter *jme)
2219 {
2220         atomic_dec(&jme->link_changing);
2221
2222         jme_set_rx_pcc(jme, PCC_OFF);
2223         if (test_bit(JME_FLAG_POLL, &jme->flags)) {
2224                 JME_NAPI_DISABLE(jme);
2225         } else {
2226                 tasklet_disable(&jme->rxclean_task);
2227                 tasklet_disable(&jme->rxempty_task);
2228         }
2229 }
2230
2231 static inline void jme_resume_rx(struct jme_adapter *jme)
2232 {
2233         struct dynpcc_info *dpi = &(jme->dpi);
2234
2235         if (test_bit(JME_FLAG_POLL, &jme->flags)) {
2236                 JME_NAPI_ENABLE(jme);
2237         } else {
2238                 tasklet_hi_enable(&jme->rxclean_task);
2239                 tasklet_hi_enable(&jme->rxempty_task);
2240         }
2241         dpi->cur                = PCC_P1;
2242         dpi->attempt            = PCC_P1;
2243         dpi->cnt                = 0;
2244         jme_set_rx_pcc(jme, PCC_P1);
2245
2246         atomic_inc(&jme->link_changing);
2247 }
2248
2249 static void
2250 jme_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp)
2251 {
2252         struct jme_adapter *jme = netdev_priv(netdev);
2253
2254         jme_pause_rx(jme);
2255         jme->vlgrp = grp;
2256         jme_resume_rx(jme);
2257 }
2258
2259 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,21)
2260 static void
2261 jme_vlan_rx_kill_vid(struct net_device *netdev, unsigned short vid)
2262 {
2263         struct jme_adapter *jme = netdev_priv(netdev);
2264
2265         if(jme->vlgrp) {
2266                 jme_pause_rx(jme);
2267 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,20)
2268                 jme->vlgrp->vlan_devices[vid] = NULL;
2269 #else
2270                 vlan_group_set_device(jme->vlgrp, vid, NULL);
2271 #endif
2272                 jme_resume_rx(jme);
2273         }
2274 }
2275 #endif
2276
2277 static void
2278 jme_get_drvinfo(struct net_device *netdev,
2279                      struct ethtool_drvinfo *info)
2280 {
2281         struct jme_adapter *jme = netdev_priv(netdev);
2282
2283         strcpy(info->driver, DRV_NAME);
2284         strcpy(info->version, DRV_VERSION);
2285         strcpy(info->bus_info, pci_name(jme->pdev));
2286 }
2287
2288 static int
2289 jme_get_regs_len(struct net_device *netdev)
2290 {
2291         return JME_REG_LEN;
2292 }
2293
2294 static void
2295 mmapio_memcpy(struct jme_adapter *jme, u32 *p, u32 reg, int len)
2296 {
2297         int i;
2298
2299         for (i = 0 ; i < len ; i += 4)
2300                 p[i >> 2] = jread32(jme, reg + i);
2301 }
2302
2303 static void
2304 mdio_memcpy(struct jme_adapter *jme, u32 *p, int reg_nr)
2305 {
2306         int i;
2307         u16 *p16 = (u16 *)p;
2308
2309         for (i = 0 ; i < reg_nr ; ++i)
2310                 p16[i] = jme_mdio_read(jme->dev, jme->mii_if.phy_id, i);
2311 }
2312
2313 static void
2314 jme_get_regs(struct net_device *netdev, struct ethtool_regs *regs, void *p)
2315 {
2316         struct jme_adapter *jme = netdev_priv(netdev);
2317         u32 *p32 = (u32 *)p;
2318
2319         memset(p, 0xFF, JME_REG_LEN);
2320
2321         regs->version = 1;
2322         mmapio_memcpy(jme, p32, JME_MAC, JME_MAC_LEN);
2323
2324         p32 += 0x100 >> 2;
2325         mmapio_memcpy(jme, p32, JME_PHY, JME_PHY_LEN);
2326
2327         p32 += 0x100 >> 2;
2328         mmapio_memcpy(jme, p32, JME_MISC, JME_MISC_LEN);
2329
2330         p32 += 0x100 >> 2;
2331         mmapio_memcpy(jme, p32, JME_RSS, JME_RSS_LEN);
2332
2333         p32 += 0x100 >> 2;
2334         mdio_memcpy(jme, p32, JME_PHY_REG_NR);
2335 }
2336
2337 static int
2338 jme_get_coalesce(struct net_device *netdev, struct ethtool_coalesce *ecmd)
2339 {
2340         struct jme_adapter *jme = netdev_priv(netdev);
2341
2342         ecmd->tx_coalesce_usecs = PCC_TX_TO;
2343         ecmd->tx_max_coalesced_frames = PCC_TX_CNT;
2344
2345         if (test_bit(JME_FLAG_POLL, &jme->flags)) {
2346                 ecmd->use_adaptive_rx_coalesce = false;
2347                 ecmd->rx_coalesce_usecs = 0;
2348                 ecmd->rx_max_coalesced_frames = 0;
2349                 return 0;
2350         }
2351
2352         ecmd->use_adaptive_rx_coalesce = true;
2353
2354         switch (jme->dpi.cur) {
2355         case PCC_P1:
2356                 ecmd->rx_coalesce_usecs = PCC_P1_TO;
2357                 ecmd->rx_max_coalesced_frames = PCC_P1_CNT;
2358                 break;
2359         case PCC_P2:
2360                 ecmd->rx_coalesce_usecs = PCC_P2_TO;
2361                 ecmd->rx_max_coalesced_frames = PCC_P2_CNT;
2362                 break;
2363         case PCC_P3:
2364                 ecmd->rx_coalesce_usecs = PCC_P3_TO;
2365                 ecmd->rx_max_coalesced_frames = PCC_P3_CNT;
2366                 break;
2367         default:
2368                 break;
2369         }
2370
2371         return 0;
2372 }
2373
2374 static int
2375 jme_set_coalesce(struct net_device *netdev, struct ethtool_coalesce *ecmd)
2376 {
2377         struct jme_adapter *jme = netdev_priv(netdev);
2378         struct dynpcc_info *dpi = &(jme->dpi);
2379
2380         if (netif_running(netdev))
2381                 return -EBUSY;
2382
2383         if (ecmd->use_adaptive_rx_coalesce &&
2384             test_bit(JME_FLAG_POLL, &jme->flags)) {
2385                 clear_bit(JME_FLAG_POLL, &jme->flags);
2386                 jme->jme_rx = netif_rx;
2387                 jme->jme_vlan_rx = vlan_hwaccel_rx;
2388                 dpi->cur                = PCC_P1;
2389                 dpi->attempt            = PCC_P1;
2390                 dpi->cnt                = 0;
2391                 jme_set_rx_pcc(jme, PCC_P1);
2392                 jme_interrupt_mode(jme);
2393         } else if (!(ecmd->use_adaptive_rx_coalesce) &&
2394                    !(test_bit(JME_FLAG_POLL, &jme->flags))) {
2395                 set_bit(JME_FLAG_POLL, &jme->flags);
2396                 jme->jme_rx = netif_receive_skb;
2397                 jme->jme_vlan_rx = vlan_hwaccel_receive_skb;
2398                 jme_interrupt_mode(jme);
2399         }
2400
2401         return 0;
2402 }
2403
2404 static void
2405 jme_get_pauseparam(struct net_device *netdev,
2406                         struct ethtool_pauseparam *ecmd)
2407 {
2408         struct jme_adapter *jme = netdev_priv(netdev);
2409         u32 val;
2410
2411         ecmd->tx_pause = (jme->reg_txpfc & TXPFC_PF_EN) != 0;
2412         ecmd->rx_pause = (jme->reg_rxmcs & RXMCS_FLOWCTRL) != 0;
2413
2414         spin_lock_bh(&jme->phy_lock);
2415         val = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_ADVERTISE);
2416         spin_unlock_bh(&jme->phy_lock);
2417
2418         ecmd->autoneg =
2419                 (val & (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM)) != 0;
2420 }
2421
2422 static int
2423 jme_set_pauseparam(struct net_device *netdev,
2424                         struct ethtool_pauseparam *ecmd)
2425 {
2426         struct jme_adapter *jme = netdev_priv(netdev);
2427         u32 val;
2428
2429         if (((jme->reg_txpfc & TXPFC_PF_EN) != 0) ^
2430                 (ecmd->tx_pause != 0)) {
2431
2432                 if (ecmd->tx_pause)
2433                         jme->reg_txpfc |= TXPFC_PF_EN;
2434                 else
2435                         jme->reg_txpfc &= ~TXPFC_PF_EN;
2436
2437                 jwrite32(jme, JME_TXPFC, jme->reg_txpfc);
2438         }
2439
2440         spin_lock_bh(&jme->rxmcs_lock);
2441         if (((jme->reg_rxmcs & RXMCS_FLOWCTRL) != 0) ^
2442                 (ecmd->rx_pause != 0)) {
2443
2444                 if (ecmd->rx_pause)
2445                         jme->reg_rxmcs |= RXMCS_FLOWCTRL;
2446                 else
2447                         jme->reg_rxmcs &= ~RXMCS_FLOWCTRL;
2448
2449                 jwrite32(jme, JME_RXMCS, jme->reg_rxmcs);
2450         }
2451         spin_unlock_bh(&jme->rxmcs_lock);
2452
2453         spin_lock_bh(&jme->phy_lock);
2454         val = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_ADVERTISE);
2455         if (((val & (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM)) != 0) ^
2456                 (ecmd->autoneg != 0)) {
2457
2458                 if (ecmd->autoneg)
2459                         val |= (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
2460                 else
2461                         val &= ~(ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
2462
2463                 jme_mdio_write(jme->dev, jme->mii_if.phy_id,
2464                                 MII_ADVERTISE, val);
2465         }
2466         spin_unlock_bh(&jme->phy_lock);
2467
2468         return 0;
2469 }
2470
2471 static void
2472 jme_get_wol(struct net_device *netdev,
2473                 struct ethtool_wolinfo *wol)
2474 {
2475         struct jme_adapter *jme = netdev_priv(netdev);
2476
2477         wol->supported = WAKE_MAGIC | WAKE_PHY;
2478
2479         wol->wolopts = 0;
2480
2481         if (jme->reg_pmcs & (PMCS_LFEN | PMCS_LREN))
2482                 wol->wolopts |= WAKE_PHY;
2483
2484         if (jme->reg_pmcs & PMCS_MFEN)
2485                 wol->wolopts |= WAKE_MAGIC;
2486
2487 }
2488
2489 static int
2490 jme_set_wol(struct net_device *netdev,
2491                 struct ethtool_wolinfo *wol)
2492 {
2493         struct jme_adapter *jme = netdev_priv(netdev);
2494
2495         if (wol->wolopts & (WAKE_MAGICSECURE |
2496                                 WAKE_UCAST |
2497                                 WAKE_MCAST |
2498                                 WAKE_BCAST |
2499                                 WAKE_ARP))
2500                 return -EOPNOTSUPP;
2501
2502         jme->reg_pmcs = 0;
2503
2504         if (wol->wolopts & WAKE_PHY)
2505                 jme->reg_pmcs |= PMCS_LFEN | PMCS_LREN;
2506
2507         if (wol->wolopts & WAKE_MAGIC)
2508                 jme->reg_pmcs |= PMCS_MFEN;
2509
2510         jwrite32(jme, JME_PMCS, jme->reg_pmcs);
2511
2512         return 0;
2513 }
2514
2515 static int
2516 jme_get_settings(struct net_device *netdev,
2517                      struct ethtool_cmd *ecmd)
2518 {
2519         struct jme_adapter *jme = netdev_priv(netdev);
2520         int rc;
2521
2522         spin_lock_bh(&jme->phy_lock);
2523         rc = mii_ethtool_gset(&(jme->mii_if), ecmd);
2524         spin_unlock_bh(&jme->phy_lock);
2525         return rc;
2526 }
2527
2528 static int
2529 jme_set_settings(struct net_device *netdev,
2530                      struct ethtool_cmd *ecmd)
2531 {
2532         struct jme_adapter *jme = netdev_priv(netdev);
2533         int rc, fdc = 0;
2534
2535         if (ecmd->speed == SPEED_1000 && ecmd->autoneg != AUTONEG_ENABLE)
2536                 return -EINVAL;
2537
2538         if (jme->mii_if.force_media &&
2539         ecmd->autoneg != AUTONEG_ENABLE &&
2540         (jme->mii_if.full_duplex != ecmd->duplex))
2541                 fdc = 1;
2542
2543         spin_lock_bh(&jme->phy_lock);
2544         rc = mii_ethtool_sset(&(jme->mii_if), ecmd);
2545         spin_unlock_bh(&jme->phy_lock);
2546
2547         if (!rc && fdc)
2548                 jme_reset_link(jme);
2549
2550         if (!rc) {
2551                 set_bit(JME_FLAG_SSET, &jme->flags);
2552                 jme->old_ecmd = *ecmd;
2553         }
2554
2555         return rc;
2556 }
2557
2558 static u32
2559 jme_get_link(struct net_device *netdev)
2560 {
2561         struct jme_adapter *jme = netdev_priv(netdev);
2562         return jread32(jme, JME_PHY_LINK) & PHY_LINK_UP;
2563 }
2564
2565 static u32
2566 jme_get_msglevel(struct net_device *netdev)
2567 {
2568         struct jme_adapter *jme = netdev_priv(netdev);
2569         return jme->msg_enable;
2570 }
2571
2572 static void
2573 jme_set_msglevel(struct net_device *netdev, u32 value)
2574 {
2575         struct jme_adapter *jme = netdev_priv(netdev);
2576         jme->msg_enable = value;
2577 }
2578
2579 static u32
2580 jme_get_rx_csum(struct net_device *netdev)
2581 {
2582         struct jme_adapter *jme = netdev_priv(netdev);
2583         return jme->reg_rxmcs & RXMCS_CHECKSUM;
2584 }
2585
2586 static int
2587 jme_set_rx_csum(struct net_device *netdev, u32 on)
2588 {
2589         struct jme_adapter *jme = netdev_priv(netdev);
2590
2591         spin_lock_bh(&jme->rxmcs_lock);
2592         if (on)
2593                 jme->reg_rxmcs |= RXMCS_CHECKSUM;
2594         else
2595                 jme->reg_rxmcs &= ~RXMCS_CHECKSUM;
2596         jwrite32(jme, JME_RXMCS, jme->reg_rxmcs);
2597         spin_unlock_bh(&jme->rxmcs_lock);
2598
2599         return 0;
2600 }
2601
2602 static int
2603 jme_set_tx_csum(struct net_device *netdev, u32 on)
2604 {
2605         struct jme_adapter *jme = netdev_priv(netdev);
2606
2607         if (on) {
2608                 set_bit(JME_FLAG_TXCSUM, &jme->flags);
2609                 if (netdev->mtu <= 1900)
2610                         netdev->features |= NETIF_F_HW_CSUM;
2611         } else {
2612                 clear_bit(JME_FLAG_TXCSUM, &jme->flags);
2613                 netdev->features &= ~NETIF_F_HW_CSUM;
2614         }
2615
2616         return 0;
2617 }
2618
2619 static int
2620 jme_set_tso(struct net_device *netdev, u32 on)
2621 {
2622         struct jme_adapter *jme = netdev_priv(netdev);
2623
2624         if (on) {
2625                 set_bit(JME_FLAG_TSO, &jme->flags);
2626                 if (netdev->mtu <= 1900)
2627                         netdev->features |= NETIF_F_TSO
2628 #ifdef NETIF_F_TSO6
2629                                 | NETIF_F_TSO6
2630 #endif
2631                                 ;
2632         } else {
2633                 clear_bit(JME_FLAG_TSO, &jme->flags);
2634                 netdev->features &= ~(NETIF_F_TSO
2635 #ifdef NETIF_F_TSO6
2636                                 | NETIF_F_TSO6
2637 #endif
2638                                 );
2639         }
2640
2641         return 0;
2642 }
2643
2644 static int
2645 jme_nway_reset(struct net_device *netdev)
2646 {
2647         struct jme_adapter *jme = netdev_priv(netdev);
2648         jme_restart_an(jme);
2649         return 0;
2650 }
2651
2652 static u8
2653 jme_smb_read(struct jme_adapter *jme, unsigned int addr)
2654 {
2655         u32 val;
2656         int to;
2657
2658         val = jread32(jme, JME_SMBCSR);
2659         to = JME_SMB_BUSY_TIMEOUT;
2660         while ((val & SMBCSR_BUSY) && --to) {
2661                 msleep(1);
2662                 val = jread32(jme, JME_SMBCSR);
2663         }
2664         if (!to) {
2665 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,33)
2666                 msg_hw(jme, "SMB Bus Busy.\n");
2667 #else
2668                 netif_err(jme, hw, jme->dev, "SMB Bus Busy.\n");
2669 #endif
2670                 return 0xFF;
2671         }
2672
2673         jwrite32(jme, JME_SMBINTF,
2674                 ((addr << SMBINTF_HWADDR_SHIFT) & SMBINTF_HWADDR) |
2675                 SMBINTF_HWRWN_READ |
2676                 SMBINTF_HWCMD);
2677
2678         val = jread32(jme, JME_SMBINTF);
2679         to = JME_SMB_BUSY_TIMEOUT;
2680         while ((val & SMBINTF_HWCMD) && --to) {
2681                 msleep(1);
2682                 val = jread32(jme, JME_SMBINTF);
2683         }
2684         if (!to) {
2685 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,33)
2686                 msg_hw(jme, "SMB Bus Busy.\n");
2687 #else
2688                 netif_err(jme, hw, jme->dev, "SMB Bus Busy.\n");
2689 #endif
2690                 return 0xFF;
2691         }
2692
2693         return (val & SMBINTF_HWDATR) >> SMBINTF_HWDATR_SHIFT;
2694 }
2695
2696 static void
2697 jme_smb_write(struct jme_adapter *jme, unsigned int addr, u8 data)
2698 {
2699         u32 val;
2700         int to;
2701
2702         val = jread32(jme, JME_SMBCSR);
2703         to = JME_SMB_BUSY_TIMEOUT;
2704         while ((val & SMBCSR_BUSY) && --to) {
2705                 msleep(1);
2706                 val = jread32(jme, JME_SMBCSR);
2707         }
2708         if (!to) {
2709 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,33)
2710                 msg_hw(jme, "SMB Bus Busy.\n");
2711 #else
2712                 netif_err(jme, hw, jme->dev, "SMB Bus Busy.\n");
2713 #endif
2714                 return;
2715         }
2716
2717         jwrite32(jme, JME_SMBINTF,
2718                 ((data << SMBINTF_HWDATW_SHIFT) & SMBINTF_HWDATW) |
2719                 ((addr << SMBINTF_HWADDR_SHIFT) & SMBINTF_HWADDR) |
2720                 SMBINTF_HWRWN_WRITE |
2721                 SMBINTF_HWCMD);
2722
2723         val = jread32(jme, JME_SMBINTF);
2724         to = JME_SMB_BUSY_TIMEOUT;
2725         while ((val & SMBINTF_HWCMD) && --to) {
2726                 msleep(1);
2727                 val = jread32(jme, JME_SMBINTF);
2728         }
2729         if (!to) {
2730 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,33)
2731                 msg_hw(jme, "SMB Bus Busy.\n");
2732 #else
2733                 netif_err(jme, hw, jme->dev, "SMB Bus Busy.\n");
2734 #endif
2735                 return;
2736         }
2737
2738         mdelay(2);
2739 }
2740
2741 static int
2742 jme_get_eeprom_len(struct net_device *netdev)
2743 {
2744         struct jme_adapter *jme = netdev_priv(netdev);
2745         u32 val;
2746         val = jread32(jme, JME_SMBCSR);
2747         return (val & SMBCSR_EEPROMD) ? JME_SMB_LEN : 0;
2748 }
2749
2750 static int
2751 jme_get_eeprom(struct net_device *netdev,
2752                 struct ethtool_eeprom *eeprom, u8 *data)
2753 {
2754         struct jme_adapter *jme = netdev_priv(netdev);
2755         int i, offset = eeprom->offset, len = eeprom->len;
2756
2757         /*
2758          * ethtool will check the boundary for us
2759          */
2760         eeprom->magic = JME_EEPROM_MAGIC;
2761         for (i = 0 ; i < len ; ++i)
2762                 data[i] = jme_smb_read(jme, i + offset);
2763
2764         return 0;
2765 }
2766
2767 static int
2768 jme_set_eeprom(struct net_device *netdev,
2769                 struct ethtool_eeprom *eeprom, u8 *data)
2770 {
2771         struct jme_adapter *jme = netdev_priv(netdev);
2772         int i, offset = eeprom->offset, len = eeprom->len;
2773
2774         if (eeprom->magic != JME_EEPROM_MAGIC)
2775                 return -EINVAL;
2776
2777         /*
2778          * ethtool will check the boundary for us
2779          */
2780         for (i = 0 ; i < len ; ++i)
2781                 jme_smb_write(jme, i + offset, data[i]);
2782
2783         return 0;
2784 }
2785
2786 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,18)
2787 static struct ethtool_ops jme_ethtool_ops = {
2788 #else
2789 static const struct ethtool_ops jme_ethtool_ops = {
2790 #endif
2791         .get_drvinfo            = jme_get_drvinfo,
2792         .get_regs_len           = jme_get_regs_len,
2793         .get_regs               = jme_get_regs,
2794         .get_coalesce           = jme_get_coalesce,
2795         .set_coalesce           = jme_set_coalesce,
2796         .get_pauseparam         = jme_get_pauseparam,
2797         .set_pauseparam         = jme_set_pauseparam,
2798         .get_wol                = jme_get_wol,
2799         .set_wol                = jme_set_wol,
2800         .get_settings           = jme_get_settings,
2801         .set_settings           = jme_set_settings,
2802         .get_link               = jme_get_link,
2803         .get_msglevel           = jme_get_msglevel,
2804         .set_msglevel           = jme_set_msglevel,
2805         .get_rx_csum            = jme_get_rx_csum,
2806         .set_rx_csum            = jme_set_rx_csum,
2807         .set_tx_csum            = jme_set_tx_csum,
2808         .set_tso                = jme_set_tso,
2809         .set_sg                 = ethtool_op_set_sg,
2810         .nway_reset             = jme_nway_reset,
2811         .get_eeprom_len         = jme_get_eeprom_len,
2812         .get_eeprom             = jme_get_eeprom,
2813         .set_eeprom             = jme_set_eeprom,
2814 };
2815
2816 static int
2817 jme_pci_dma64(struct pci_dev *pdev)
2818 {
2819         if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250 &&
2820 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,29)
2821             !pci_set_dma_mask(pdev, DMA_BIT_MASK(64))
2822 #else
2823             !pci_set_dma_mask(pdev, DMA_64BIT_MASK)
2824 #endif
2825            )
2826 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,29)
2827                 if (!pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)))
2828 #else
2829                 if (!pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK))
2830 #endif
2831                         return 1;
2832
2833         if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250 &&
2834 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,29)
2835             !pci_set_dma_mask(pdev, DMA_BIT_MASK(40))
2836 #else
2837             !pci_set_dma_mask(pdev, DMA_40BIT_MASK)
2838 #endif
2839            )
2840 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,29)
2841                 if (!pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(40)))
2842 #else
2843                 if (!pci_set_consistent_dma_mask(pdev, DMA_40BIT_MASK))
2844 #endif
2845                         return 1;
2846
2847 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,29)
2848         if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32)))
2849                 if (!pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)))
2850 #else
2851         if (!pci_set_dma_mask(pdev, DMA_32BIT_MASK))
2852                 if (!pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK))
2853 #endif
2854                         return 0;
2855
2856         return -1;
2857 }
2858
2859 static inline void
2860 jme_phy_init(struct jme_adapter *jme)
2861 {
2862         u16 reg26;
2863
2864         reg26 = jme_mdio_read(jme->dev, jme->mii_if.phy_id, 26);
2865         jme_mdio_write(jme->dev, jme->mii_if.phy_id, 26, reg26 | 0x1000);
2866 }
2867
2868 static inline void
2869 jme_check_hw_ver(struct jme_adapter *jme)
2870 {
2871         u32 chipmode;
2872
2873         chipmode = jread32(jme, JME_CHIPMODE);
2874
2875         jme->fpgaver = (chipmode & CM_FPGAVER_MASK) >> CM_FPGAVER_SHIFT;
2876         jme->chiprev = (chipmode & CM_CHIPREV_MASK) >> CM_CHIPREV_SHIFT;
2877 }
2878
2879 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,29)
2880 static const struct net_device_ops jme_netdev_ops = {
2881         .ndo_open               = jme_open,
2882         .ndo_stop               = jme_close,
2883         .ndo_validate_addr      = eth_validate_addr,
2884         .ndo_start_xmit         = jme_start_xmit,
2885         .ndo_set_mac_address    = jme_set_macaddr,
2886         .ndo_set_multicast_list = jme_set_multi,
2887         .ndo_change_mtu         = jme_change_mtu,
2888         .ndo_tx_timeout         = jme_tx_timeout,
2889         .ndo_vlan_rx_register   = jme_vlan_rx_register,
2890 };
2891 #endif
2892
2893 static int __devinit
2894 jme_init_one(struct pci_dev *pdev,
2895              const struct pci_device_id *ent)
2896 {
2897         int rc = 0, using_dac, i;
2898         struct net_device *netdev;
2899         struct jme_adapter *jme;
2900         u16 bmcr, bmsr;
2901         u32 apmc;
2902
2903         /*
2904          * set up PCI device basics
2905          */
2906         rc = pci_enable_device(pdev);
2907         if (rc) {
2908                 jeprintk(pdev, "Cannot enable PCI device.\n");
2909                 goto err_out;
2910         }
2911
2912         using_dac = jme_pci_dma64(pdev);
2913         if (using_dac < 0) {
2914                 jeprintk(pdev, "Cannot set PCI DMA Mask.\n");
2915                 rc = -EIO;
2916                 goto err_out_disable_pdev;
2917         }
2918
2919         if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
2920                 jeprintk(pdev, "No PCI resource region found.\n");
2921                 rc = -ENOMEM;
2922                 goto err_out_disable_pdev;
2923         }
2924
2925         rc = pci_request_regions(pdev, DRV_NAME);
2926         if (rc) {
2927                 jeprintk(pdev, "Cannot obtain PCI resource region.\n");
2928                 goto err_out_disable_pdev;
2929         }
2930
2931         pci_set_master(pdev);
2932
2933         /*
2934          * alloc and init net device
2935          */
2936         netdev = alloc_etherdev(sizeof(*jme));
2937         if (!netdev) {
2938                 jeprintk(pdev, "Cannot allocate netdev structure.\n");
2939                 rc = -ENOMEM;
2940                 goto err_out_release_regions;
2941         }
2942 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,29)
2943         netdev->netdev_ops = &jme_netdev_ops;
2944 #else
2945         netdev->open                    = jme_open;
2946         netdev->stop                    = jme_close;
2947         netdev->hard_start_xmit         = jme_start_xmit;
2948         netdev->set_mac_address         = jme_set_macaddr;
2949         netdev->set_multicast_list      = jme_set_multi;
2950         netdev->change_mtu              = jme_change_mtu;
2951         netdev->tx_timeout              = jme_tx_timeout;
2952         netdev->vlan_rx_register        = jme_vlan_rx_register;
2953 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,21)
2954         netdev->vlan_rx_kill_vid        = jme_vlan_rx_kill_vid;
2955 #endif
2956         NETDEV_GET_STATS(netdev, &jme_get_stats);
2957 #endif
2958         netdev->ethtool_ops             = &jme_ethtool_ops;
2959         netdev->watchdog_timeo          = TX_TIMEOUT;
2960         netdev->features                =       NETIF_F_HW_CSUM |
2961                                                 NETIF_F_SG |
2962                                                 NETIF_F_TSO |
2963 #ifdef NETIF_F_TSO6
2964                                                 NETIF_F_TSO6 |
2965 #endif
2966                                                 NETIF_F_HW_VLAN_TX |
2967                                                 NETIF_F_HW_VLAN_RX;
2968         if (using_dac)
2969                 netdev->features        |=      NETIF_F_HIGHDMA;
2970
2971         SET_NETDEV_DEV(netdev, &pdev->dev);
2972         pci_set_drvdata(pdev, netdev);
2973
2974         /*
2975          * init adapter info
2976          */
2977         jme = netdev_priv(netdev);
2978         jme->pdev = pdev;
2979         jme->dev = netdev;
2980         jme->jme_rx = netif_rx;
2981         jme->jme_vlan_rx = vlan_hwaccel_rx;
2982         jme->old_mtu = netdev->mtu = 1500;
2983         jme->phylink = 0;
2984         jme->tx_ring_size = 1 << 10;
2985         jme->tx_ring_mask = jme->tx_ring_size - 1;
2986         jme->tx_wake_threshold = 1 << 9;
2987         jme->rx_ring_size = 1 << 9;
2988         jme->rx_ring_mask = jme->rx_ring_size - 1;
2989         jme->msg_enable = JME_DEF_MSG_ENABLE;
2990         jme->regs = ioremap(pci_resource_start(pdev, 0),
2991                              pci_resource_len(pdev, 0));
2992         if (!(jme->regs)) {
2993                 jeprintk(pdev, "Mapping PCI resource region error.\n");
2994                 rc = -ENOMEM;
2995                 goto err_out_free_netdev;
2996         }
2997
2998         if (no_pseudohp) {
2999                 apmc = jread32(jme, JME_APMC) & ~JME_APMC_PSEUDO_HP_EN;
3000                 jwrite32(jme, JME_APMC, apmc);
3001         } else if (force_pseudohp) {
3002                 apmc = jread32(jme, JME_APMC) | JME_APMC_PSEUDO_HP_EN;
3003                 jwrite32(jme, JME_APMC, apmc);
3004         }
3005
3006         NETIF_NAPI_SET(netdev, &jme->napi, jme_poll, jme->rx_ring_size >> 2)
3007
3008         spin_lock_init(&jme->phy_lock);
3009         spin_lock_init(&jme->macaddr_lock);
3010         spin_lock_init(&jme->rxmcs_lock);
3011
3012         atomic_set(&jme->link_changing, 1);
3013         atomic_set(&jme->rx_cleaning, 1);
3014         atomic_set(&jme->tx_cleaning, 1);
3015         atomic_set(&jme->rx_empty, 1);
3016
3017         tasklet_init(&jme->pcc_task,
3018                      jme_pcc_tasklet,
3019                      (unsigned long) jme);
3020         tasklet_init(&jme->linkch_task,
3021                      jme_link_change_tasklet,
3022                      (unsigned long) jme);
3023         tasklet_init(&jme->txclean_task,
3024                      jme_tx_clean_tasklet,
3025                      (unsigned long) jme);
3026         tasklet_init(&jme->rxclean_task,
3027                      jme_rx_clean_tasklet,
3028                      (unsigned long) jme);
3029         tasklet_init(&jme->rxempty_task,
3030                      jme_rx_empty_tasklet,
3031                      (unsigned long) jme);
3032         tasklet_disable_nosync(&jme->linkch_task);
3033         tasklet_disable_nosync(&jme->txclean_task);
3034         tasklet_disable_nosync(&jme->rxclean_task);
3035         tasklet_disable_nosync(&jme->rxempty_task);
3036         jme->dpi.cur = PCC_P1;
3037
3038         jme->reg_ghc = 0;
3039         jme->reg_rxcs = RXCS_DEFAULT;
3040         jme->reg_rxmcs = RXMCS_DEFAULT;
3041         jme->reg_txpfc = 0;
3042         jme->reg_pmcs = PMCS_MFEN;
3043         set_bit(JME_FLAG_TXCSUM, &jme->flags);
3044         set_bit(JME_FLAG_TSO, &jme->flags);
3045
3046         /*
3047          * Get Max Read Req Size from PCI Config Space
3048          */
3049         pci_read_config_byte(pdev, PCI_DCSR_MRRS, &jme->mrrs);
3050         jme->mrrs &= PCI_DCSR_MRRS_MASK;
3051         switch (jme->mrrs) {
3052         case MRRS_128B:
3053                 jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_128B;
3054                 break;
3055         case MRRS_256B:
3056                 jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_256B;
3057                 break;
3058         default:
3059                 jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_512B;
3060                 break;
3061         };
3062
3063         /*
3064          * Must check before reset_mac_processor
3065          */
3066         jme_check_hw_ver(jme);
3067         jme->mii_if.dev = netdev;
3068         if (jme->fpgaver) {
3069                 jme->mii_if.phy_id = 0;
3070                 for (i = 1 ; i < 32 ; ++i) {
3071                         bmcr = jme_mdio_read(netdev, i, MII_BMCR);
3072                         bmsr = jme_mdio_read(netdev, i, MII_BMSR);
3073                         if (bmcr != 0xFFFFU && (bmcr != 0 || bmsr != 0)) {
3074                                 jme->mii_if.phy_id = i;
3075                                 break;
3076                         }
3077                 }
3078
3079                 if (!jme->mii_if.phy_id) {
3080                         rc = -EIO;
3081                         jeprintk(pdev, "Can not find phy_id.\n");
3082                          goto err_out_unmap;
3083                 }
3084
3085                 jme->reg_ghc |= GHC_LINK_POLL;
3086         } else {
3087                 jme->mii_if.phy_id = 1;
3088         }
3089         if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250)
3090                 jme->mii_if.supports_gmii = true;
3091         else
3092                 jme->mii_if.supports_gmii = false;
3093         jme->mii_if.mdio_read = jme_mdio_read;
3094         jme->mii_if.mdio_write = jme_mdio_write;
3095
3096         jme_clear_pm(jme);
3097         jme_set_phyfifoa(jme);
3098         pci_read_config_byte(pdev, PCI_REVISION_ID, &jme->rev);
3099         if (!jme->fpgaver)
3100                 jme_phy_init(jme);
3101         jme_phy_off(jme);
3102
3103         /*
3104          * Reset MAC processor and reload EEPROM for MAC Address
3105          */
3106         jme_reset_mac_processor(jme);
3107         rc = jme_reload_eeprom(jme);
3108         if (rc) {
3109                 jeprintk(pdev,
3110                         "Reload eeprom for reading MAC Address error.\n");
3111                 goto err_out_unmap;
3112         }
3113         jme_load_macaddr(netdev);
3114
3115         /*
3116          * Tell stack that we are not ready to work until open()
3117          */
3118         netif_carrier_off(netdev);
3119         netif_stop_queue(netdev);
3120
3121         /*
3122          * Register netdev
3123          */
3124         rc = register_netdev(netdev);
3125         if (rc) {
3126                 jeprintk(pdev, "Cannot register net device.\n");
3127                 goto err_out_unmap;
3128         }
3129
3130 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,33)
3131         msg_probe(jme, "%s%s ver:%x rev:%x "
3132                         "macaddr: %02x:%02x:%02x:%02x:%02x:%02x\n",
3133                 (jme->pdev->device == PCI_DEVICE_ID_JMICRON_JMC250) ?
3134                         "JMC250 Gigabit Ethernet" :
3135                         (jme->pdev->device == PCI_DEVICE_ID_JMICRON_JMC260) ?
3136                                 "JMC260 Fast Ethernet" : "Unknown",
3137                 (jme->fpgaver != 0) ? " (FPGA)" : "",
3138                 (jme->fpgaver != 0) ? jme->fpgaver : jme->chiprev,
3139                 jme->rev,
3140                 netdev->dev_addr[0],
3141                 netdev->dev_addr[1],
3142                 netdev->dev_addr[2],
3143                 netdev->dev_addr[3],
3144                 netdev->dev_addr[4],
3145                 netdev->dev_addr[5]);
3146 #else
3147         netif_info(jme, probe, jme->dev, "%s%s ver:%x rev:%x macaddr:%pM\n",
3148                    (jme->pdev->device == PCI_DEVICE_ID_JMICRON_JMC250) ?
3149                    "JMC250 Gigabit Ethernet" :
3150                    (jme->pdev->device == PCI_DEVICE_ID_JMICRON_JMC260) ?
3151                    "JMC260 Fast Ethernet" : "Unknown",
3152                    (jme->fpgaver != 0) ? " (FPGA)" : "",
3153                    (jme->fpgaver != 0) ? jme->fpgaver : jme->chiprev,
3154                    jme->rev, netdev->dev_addr);
3155 #endif
3156
3157         return 0;
3158
3159 err_out_unmap:
3160         iounmap(jme->regs);
3161 err_out_free_netdev:
3162         pci_set_drvdata(pdev, NULL);
3163         free_netdev(netdev);
3164 err_out_release_regions:
3165         pci_release_regions(pdev);
3166 err_out_disable_pdev:
3167         pci_disable_device(pdev);
3168 err_out:
3169         return rc;
3170 }
3171
3172 static void __devexit
3173 jme_remove_one(struct pci_dev *pdev)
3174 {
3175         struct net_device *netdev = pci_get_drvdata(pdev);
3176         struct jme_adapter *jme = netdev_priv(netdev);
3177
3178         unregister_netdev(netdev);
3179         iounmap(jme->regs);
3180         pci_set_drvdata(pdev, NULL);
3181         free_netdev(netdev);
3182         pci_release_regions(pdev);
3183         pci_disable_device(pdev);
3184
3185 }
3186
3187 #ifdef CONFIG_PM
3188 static int
3189 jme_suspend(struct pci_dev *pdev, pm_message_t state)
3190 {
3191         struct net_device *netdev = pci_get_drvdata(pdev);
3192         struct jme_adapter *jme = netdev_priv(netdev);
3193
3194         atomic_dec(&jme->link_changing);
3195
3196         netif_device_detach(netdev);
3197         netif_stop_queue(netdev);
3198         jme_stop_irq(jme);
3199
3200         tasklet_disable(&jme->txclean_task);
3201         tasklet_disable(&jme->rxclean_task);
3202         tasklet_disable(&jme->rxempty_task);
3203
3204         if (netif_carrier_ok(netdev)) {
3205                 if (test_bit(JME_FLAG_POLL, &jme->flags))
3206                         jme_polling_mode(jme);
3207
3208                 jme_stop_pcc_timer(jme);
3209                 jme_reset_ghc_speed(jme);
3210                 jme_disable_rx_engine(jme);
3211                 jme_disable_tx_engine(jme);
3212                 jme_reset_mac_processor(jme);
3213                 jme_free_rx_resources(jme);
3214                 jme_free_tx_resources(jme);
3215                 netif_carrier_off(netdev);
3216                 jme->phylink = 0;
3217         }
3218
3219         tasklet_enable(&jme->txclean_task);
3220         tasklet_hi_enable(&jme->rxclean_task);
3221         tasklet_hi_enable(&jme->rxempty_task);
3222
3223         pci_save_state(pdev);
3224         if (jme->reg_pmcs) {
3225                 jme_set_100m_half(jme);
3226
3227                 if (jme->reg_pmcs & (PMCS_LFEN | PMCS_LREN))
3228                         jme_wait_link(jme);
3229
3230                 jwrite32(jme, JME_PMCS, jme->reg_pmcs);
3231
3232                 pci_enable_wake(pdev, PCI_D3cold, true);
3233         } else {
3234                 jme_phy_off(jme);
3235         }
3236         pci_set_power_state(pdev, PCI_D3cold);
3237
3238         return 0;
3239 }
3240
3241 static int
3242 jme_resume(struct pci_dev *pdev)
3243 {
3244         struct net_device *netdev = pci_get_drvdata(pdev);
3245         struct jme_adapter *jme = netdev_priv(netdev);
3246
3247         jme_clear_pm(jme);
3248         pci_restore_state(pdev);
3249
3250         if (test_bit(JME_FLAG_SSET, &jme->flags))
3251                 jme_set_settings(netdev, &jme->old_ecmd);
3252         else
3253                 jme_reset_phy_processor(jme);
3254
3255         jme_start_irq(jme);
3256         netif_device_attach(netdev);
3257
3258         atomic_inc(&jme->link_changing);
3259
3260         jme_reset_link(jme);
3261
3262         return 0;
3263 }
3264 #endif
3265
3266 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,24)
3267 static struct pci_device_id jme_pci_tbl[] = {
3268 #else
3269 static DEFINE_PCI_DEVICE_TABLE(jme_pci_tbl) = {
3270 #endif
3271         { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMC250) },
3272         { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMC260) },
3273         { }
3274 };
3275
3276 static struct pci_driver jme_driver = {
3277         .name           = DRV_NAME,
3278         .id_table       = jme_pci_tbl,
3279         .probe          = jme_init_one,
3280         .remove         = __devexit_p(jme_remove_one),
3281 #ifdef CONFIG_PM
3282         .suspend        = jme_suspend,
3283         .resume         = jme_resume,
3284 #endif /* CONFIG_PM */
3285 };
3286
3287 static int __init
3288 jme_init_module(void)
3289 {
3290         printk(KERN_INFO PFX "JMicron JMC2XX ethernet "
3291                "driver version %s\n", DRV_VERSION);
3292         return pci_register_driver(&jme_driver);
3293 }
3294
3295 static void __exit
3296 jme_cleanup_module(void)
3297 {
3298         pci_unregister_driver(&jme_driver);
3299 }
3300
3301 module_init(jme_init_module);
3302 module_exit(jme_cleanup_module);
3303
3304 MODULE_AUTHOR("Guo-Fu Tseng <cooldavid@cooldavid.org>");
3305 MODULE_DESCRIPTION("JMicron JMC2x0 PCI Express Ethernet driver");
3306 MODULE_LICENSE("GPL");
3307 MODULE_VERSION(DRV_VERSION);
3308 MODULE_DEVICE_TABLE(pci, jme_pci_tbl);
3309