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