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 /*
  25  * TODO:
  26  *      -  Implement MSI-X.
  27  *         Along with multiple RX queue, for CPU load balancing.
  28  *      -  Decode register dump for ethtool.
  29  */
  30
  31 #include <linux/version.h>
  32 #include <linux/module.h>
  33 #include <linux/kernel.h>
  34 #include <linux/pci.h>
  35 #include <linux/netdevice.h>
  36 #include <linux/etherdevice.h>
  37 #include <linux/ethtool.h>
  38 #include <linux/mii.h>
  39 #include <linux/crc32.h>
  40 #include <linux/delay.h>
  41 #include <linux/spinlock.h>
  42 #include <linux/in.h>
  43 #include <linux/ip.h>
  44 #include <linux/ipv6.h>
  45 #include <linux/tcp.h>
  46 #include <linux/udp.h>
  47 #include <linux/if_vlan.h>
  48 #include "jme.h"
  49
  50 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,21)
  51 static struct net_device_stats *
  52 jme_get_stats(struct net_device *netdev)
  53 {
  54         struct jme_adapter *jme = netdev_priv(netdev);
  55         return &jme->stats;
  56 }
  57 #endif
  58
  59 static int
  60 jme_mdio_read(struct net_device *netdev, int phy, int reg)
  61 {
  62         struct jme_adapter *jme = netdev_priv(netdev);
  63         int i, val;
  64
  65         jwrite32(jme, JME_SMI, SMI_OP_REQ |
  66                                 smi_phy_addr(phy) |
  67                                 smi_reg_addr(reg));
  68
  69         wmb();
  70         for (i = JME_PHY_TIMEOUT ; i > 0 ; --i) {
  71                 udelay(1);
  72                 val = jread32(jme, JME_SMI);
  73                 if ((val & SMI_OP_REQ) == 0)
  74                         break;
  75         }
  76
  77         if (i == 0) {
  78                 jeprintk(netdev->name, "phy read timeout : %d\n", reg);
  79                 return 0;
  80         }
  81
  82         return ((val & SMI_DATA_MASK) >> SMI_DATA_SHIFT);
  83 }
  84
  85 static void
  86 jme_mdio_write(struct net_device *netdev,
  87                                 int phy, int reg, int val)
  88 {
  89         struct jme_adapter *jme = netdev_priv(netdev);
  90         int i;
  91
  92         jwrite32(jme, JME_SMI, SMI_OP_WRITE | SMI_OP_REQ |
  93                 ((val << SMI_DATA_SHIFT) & SMI_DATA_MASK) |
  94                 smi_phy_addr(phy) | smi_reg_addr(reg));
  95
  96         wmb();
  97         for (i = JME_PHY_TIMEOUT ; i > 0 ; --i) {
  98                 udelay(1);
  99                 val = jread32(jme, JME_SMI);
 100                 if ((val & SMI_OP_REQ) == 0)
 101                         break;
 102         }
 103
 104         if (i == 0)
 105                 jeprintk(netdev->name, "phy write timeout : %d\n", reg);
 106
 107         return;
 108 }
 109
 110 __always_inline static 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         jme_mdio_write(jme->dev,
 121                         jme->mii_if.phy_id,
 122                         MII_CTRL1000,
 123                         ADVERTISE_1000FULL | ADVERTISE_1000HALF);
 124
 125         val = jme_mdio_read(jme->dev,
 126                                 jme->mii_if.phy_id,
 127                                 MII_BMCR);
 128
 129         jme_mdio_write(jme->dev,
 130                         jme->mii_if.phy_id,
 131                         MII_BMCR, val | BMCR_RESET);
 132
 133         return;
 134 }
 135
 136 static void
 137 jme_setup_wakeup_frame(struct jme_adapter *jme,
 138                 __u32 *mask, __u32 crc, int fnr)
 139 {
 140         int i;
 141
 142         /*
 143          * Setup CRC pattern
 144          */
 145         jwrite32(jme, JME_WFOI, WFOI_CRC_SEL | (fnr & WFOI_FRAME_SEL));
 146         wmb();
 147         jwrite32(jme, JME_WFODP, crc);
 148         wmb();
 149
 150         /*
 151          * Setup Mask
 152          */
 153         for(i = 0 ; i < WAKEUP_FRAME_MASK_DWNR ; ++i) {
 154                 jwrite32(jme, JME_WFOI,
 155                                 ((i << WFOI_MASK_SHIFT) & WFOI_MASK_SEL) |
 156                                 (fnr & WFOI_FRAME_SEL));
 157                 wmb();
 158                 jwrite32(jme, JME_WFODP, mask[i]);
 159                 wmb();
 160         }
 161 }
 162
 163 __always_inline static void
 164 jme_reset_mac_processor(struct jme_adapter *jme)
 165 {
 166         __u32 mask[WAKEUP_FRAME_MASK_DWNR] = {0,0,0,0};
 167         __u32 crc = 0xCDCDCDCD;
 168         int i;
 169
 170         jwrite32(jme, JME_GHC, jme->reg_ghc | GHC_SWRST);
 171         udelay(2);
 172         jwrite32(jme, JME_GHC, jme->reg_ghc);
 173         jwrite32(jme, JME_RXMCHT_LO, 0x00000000);
 174         jwrite32(jme, JME_RXMCHT_HI, 0x00000000);
 175         for(i = 0 ; i < WAKEUP_FRAME_NR ; ++i)
 176                 jme_setup_wakeup_frame(jme, mask, crc, i);
 177         jwrite32(jme, JME_GPREG0, GPREG0_DEFAULT);
 178         jwrite32(jme, JME_GPREG1, 0);
 179 }
 180
 181 __always_inline static void
 182 jme_clear_pm(struct jme_adapter *jme)
 183 {
 184         jwrite32(jme, JME_PMCS, 0xFFFF0000 | jme->reg_pmcs);
 185         pci_set_power_state(jme->pdev, PCI_D0);
 186         pci_enable_wake(jme->pdev, PCI_D0, false);
 187 }
 188
 189 static int
 190 jme_reload_eeprom(struct jme_adapter *jme)
 191 {
 192         __u32 val;
 193         int i;
 194
 195         val = jread32(jme, JME_SMBCSR);
 196
 197         if(val & SMBCSR_EEPROMD)
 198         {
 199                 val |= SMBCSR_CNACK;
 200                 jwrite32(jme, JME_SMBCSR, val);
 201                 val |= SMBCSR_RELOAD;
 202                 jwrite32(jme, JME_SMBCSR, val);
 203                 mdelay(12);
 204
 205                 for (i = JME_SMB_TIMEOUT; i > 0; --i)
 206                 {
 207                         mdelay(1);
 208                         if ((jread32(jme, JME_SMBCSR) & SMBCSR_RELOAD) == 0)
 209                                 break;
 210                 }
 211
 212                 if(i == 0) {
 213                         jeprintk(jme->dev->name, "eeprom reload timeout\n");
 214                         return -EIO;
 215                 }
 216         }
 217         else
 218                 return -EIO;
 219
 220         return 0;
 221 }
 222
 223 static void
 224 jme_load_macaddr(struct net_device *netdev)
 225 {
 226         struct jme_adapter *jme = netdev_priv(netdev);
 227         unsigned char macaddr[6];
 228         __u32 val;
 229
 230         spin_lock(&jme->macaddr_lock);
 231         val = jread32(jme, JME_RXUMA_LO);
 232         macaddr[0] = (val >>  0) & 0xFF;
 233         macaddr[1] = (val >>  8) & 0xFF;
 234         macaddr[2] = (val >> 16) & 0xFF;
 235         macaddr[3] = (val >> 24) & 0xFF;
 236         val = jread32(jme, JME_RXUMA_HI);
 237         macaddr[4] = (val >>  0) & 0xFF;
 238         macaddr[5] = (val >>  8) & 0xFF;
 239         memcpy(netdev->dev_addr, macaddr, 6);
 240         spin_unlock(&jme->macaddr_lock);
 241 }
 242
 243 __always_inline static void
 244 jme_set_rx_pcc(struct jme_adapter *jme, int p)
 245 {
 246         switch(p) {
 247         case PCC_OFF:
 248                 jwrite32(jme, JME_PCCRX0,
 249                         ((PCC_OFF_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
 250                         ((PCC_OFF_CNT << PCCRX_SHIFT) & PCCRX_MASK));
 251                 break;
 252         case PCC_P1:
 253                 jwrite32(jme, JME_PCCRX0,
 254                         ((PCC_P1_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
 255                         ((PCC_P1_CNT << PCCRX_SHIFT) & PCCRX_MASK));
 256                 break;
 257         case PCC_P2:
 258                 jwrite32(jme, JME_PCCRX0,
 259                         ((PCC_P2_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
 260                         ((PCC_P2_CNT << PCCRX_SHIFT) & PCCRX_MASK));
 261                 break;
 262         case PCC_P3:
 263                 jwrite32(jme, JME_PCCRX0,
 264                         ((PCC_P3_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
 265                         ((PCC_P3_CNT << PCCRX_SHIFT) & PCCRX_MASK));
 266                 break;
 267         default:
 268                 break;
 269         }
 270         wmb();
 271
 272         if(!(jme->flags & JME_FLAG_POLL))
 273                 dprintk(jme->dev->name, "Switched to PCC_P%d\n", p);
 274 }
 275
 276 static void
 277 jme_start_irq(struct jme_adapter *jme)
 278 {
 279         register struct dynpcc_info *dpi = &(jme->dpi);
 280
 281         jme_set_rx_pcc(jme, PCC_P1);
 282         dpi->cur                = PCC_P1;
 283         dpi->attempt            = PCC_P1;
 284         dpi->cnt                = 0;
 285
 286         jwrite32(jme, JME_PCCTX,
 287                         ((PCC_TX_TO << PCCTXTO_SHIFT) & PCCTXTO_MASK) |
 288                         ((PCC_TX_CNT << PCCTX_SHIFT) & PCCTX_MASK) |
 289                         PCCTXQ0_EN
 290                 );
 291
 292         /*
 293          * Enable Interrupts
 294          */
 295         jwrite32(jme, JME_IENS, INTR_ENABLE);
 296 }
 297
 298 __always_inline static void
 299 jme_stop_irq(struct jme_adapter *jme)
 300 {
 301         /*
 302          * Disable Interrupts
 303          */
 304         jwrite32(jme, JME_IENC, INTR_ENABLE);
 305 }
 306
 307
 308 __always_inline static void
 309 jme_enable_shadow(struct jme_adapter *jme)
 310 {
 311         jwrite32(jme,
 312                  JME_SHBA_LO,
 313                  ((__u32)jme->shadow_dma & ~((__u32)0x1F)) | SHBA_POSTEN);
 314 }
 315
 316 __always_inline static void
 317 jme_disable_shadow(struct jme_adapter *jme)
 318 {
 319         jwrite32(jme, JME_SHBA_LO, 0x0);
 320 }
 321
 322 static int
 323 jme_check_link(struct net_device *netdev, int testonly)
 324 {
 325         struct jme_adapter *jme = netdev_priv(netdev);
 326         __u32 phylink, ghc, cnt = JME_SPDRSV_TIMEOUT, bmcr;
 327         char linkmsg[64];
 328         int rc = 0;
 329
 330         linkmsg[0] = '\0';
 331         phylink = jread32(jme, JME_PHY_LINK);
 332
 333         if (phylink & PHY_LINK_UP) {
 334                 if(!(phylink & PHY_LINK_AUTONEG_COMPLETE)) {
 335                         /*
 336                          * If we did not enable AN
 337                          * Speed/Duplex Info should be obtained from SMI
 338                          */
 339                         phylink = PHY_LINK_UP;
 340
 341                         bmcr = jme_mdio_read(jme->dev,
 342                                                 jme->mii_if.phy_id,
 343                                                 MII_BMCR);
 344
 345
 346                         phylink |= ((bmcr & BMCR_SPEED1000) &&
 347                                         (bmcr & BMCR_SPEED100) == 0) ?
 348                                         PHY_LINK_SPEED_1000M :
 349                                         (bmcr & BMCR_SPEED100) ?
 350                                         PHY_LINK_SPEED_100M :
 351                                         PHY_LINK_SPEED_10M;
 352
 353                         phylink |= (bmcr & BMCR_FULLDPLX) ?
 354                                          PHY_LINK_DUPLEX : 0;
 355
 356                         strcat(linkmsg, "Forced: ");
 357                 }
 358                 else {
 359                         /*
 360                          * Keep polling for speed/duplex resolve complete
 361                          */
 362                         while(!(phylink & PHY_LINK_SPEEDDPU_RESOLVED) &&
 363                                 --cnt) {
 364
 365                                 udelay(1);
 366                                 phylink = jread32(jme, JME_PHY_LINK);
 367
 368                         }
 369
 370                         if(!cnt)
 371                                 jeprintk(netdev->name,
 372                                         "Waiting speed resolve timeout.\n");
 373
 374                         strcat(linkmsg, "ANed: ");
 375                 }
 376
 377                 if(jme->phylink == phylink) {
 378                         rc = 1;
 379                         goto out;
 380                 }
 381                 if(testonly)
 382                         goto out;
 383
 384                 jme->phylink = phylink;
 385
 386                 switch(phylink & PHY_LINK_SPEED_MASK) {
 387                         case PHY_LINK_SPEED_10M:
 388                                 ghc = GHC_SPEED_10M;
 389                                 strcat(linkmsg, "10 Mbps, ");
 390                                 break;
 391                         case PHY_LINK_SPEED_100M:
 392                                 ghc = GHC_SPEED_100M;
 393                                 strcat(linkmsg, "100 Mbps, ");
 394                                 break;
 395                         case PHY_LINK_SPEED_1000M:
 396                                 ghc = GHC_SPEED_1000M;
 397                                 strcat(linkmsg, "1000 Mbps, ");
 398                                 break;
 399                         default:
 400                                 ghc = 0;
 401                                 break;
 402                 }
 403                 ghc |= (phylink & PHY_LINK_DUPLEX) ? GHC_DPX : 0;
 404
 405                 strcat(linkmsg, (phylink &PHY_LINK_DUPLEX) ?
 406                                         "Full-Duplex, " :
 407                                         "Half-Duplex, ");
 408
 409                 if(phylink & PHY_LINK_MDI_STAT)
 410                         strcat(linkmsg, "MDI-X");
 411                 else
 412                         strcat(linkmsg, "MDI");
 413
 414                 if(phylink & PHY_LINK_DUPLEX)
 415                         jwrite32(jme, JME_TXMCS, TXMCS_DEFAULT);
 416                 else {
 417                         jwrite32(jme, JME_TXMCS, TXMCS_DEFAULT |
 418                                                 TXMCS_BACKOFF |
 419                                                 TXMCS_CARRIERSENSE |
 420                                                 TXMCS_COLLISION);
 421                         jwrite32(jme, JME_TXTRHD, TXTRHD_TXPEN |
 422                                 ((0x2000 << TXTRHD_TXP_SHIFT) & TXTRHD_TXP) |
 423                                 TXTRHD_TXREN |
 424                                 ((8 << TXTRHD_TXRL_SHIFT) & TXTRHD_TXRL));
 425                 }
 426
 427                 jme->reg_ghc = ghc;
 428                 jwrite32(jme, JME_GHC, ghc);
 429
 430                 jprintk(netdev->name, "Link is up at %s.\n", linkmsg);
 431                 netif_carrier_on(netdev);
 432         }
 433         else {
 434                 if(testonly)
 435                         goto out;
 436
 437                 jprintk(netdev->name, "Link is down.\n");
 438                 jme->phylink = 0;
 439                 netif_carrier_off(netdev);
 440         }
 441
 442 out:
 443         return rc;
 444 }
 445
 446 static int
 447 jme_setup_tx_resources(struct jme_adapter *jme)
 448 {
 449         struct jme_ring *txring = &(jme->txring[0]);
 450
 451         txring->alloc = dma_alloc_coherent(&(jme->pdev->dev),
 452                                    TX_RING_ALLOC_SIZE(jme->tx_ring_size),
 453                                    &(txring->dmaalloc),
 454                                    GFP_ATOMIC);
 455
 456         if(!txring->alloc) {
 457                 txring->desc = NULL;
 458                 txring->dmaalloc = 0;
 459                 txring->dma = 0;
 460                 return -ENOMEM;
 461         }
 462
 463         /*
 464          * 16 Bytes align
 465          */
 466         txring->desc            = (void*)ALIGN((unsigned long)(txring->alloc),
 467                                                 RING_DESC_ALIGN);
 468         txring->dma             = ALIGN(txring->dmaalloc, RING_DESC_ALIGN);
 469         txring->next_to_use     = 0;
 470         txring->next_to_clean   = 0;
 471         atomic_set(&txring->nr_free, jme->tx_ring_size);
 472
 473         /*
 474          * Initialize Transmit Descriptors
 475          */
 476         memset(txring->alloc, 0, TX_RING_ALLOC_SIZE(jme->tx_ring_size));
 477         memset(txring->bufinf, 0,
 478                 sizeof(struct jme_buffer_info) * jme->tx_ring_size);
 479
 480         return 0;
 481 }
 482
 483 static void
 484 jme_free_tx_resources(struct jme_adapter *jme)
 485 {
 486         int i;
 487         struct jme_ring *txring = &(jme->txring[0]);
 488         struct jme_buffer_info *txbi = txring->bufinf;
 489
 490         if(txring->alloc) {
 491                 for(i = 0 ; i < jme->tx_ring_size ; ++i) {
 492                         txbi = txring->bufinf + i;
 493                         if(txbi->skb) {
 494                                 dev_kfree_skb(txbi->skb);
 495                                 txbi->skb = NULL;
 496                         }
 497                         txbi->mapping   = 0;
 498                         txbi->len       = 0;
 499                         txbi->nr_desc   = 0;
 500                 }
 501
 502                 dma_free_coherent(&(jme->pdev->dev),
 503                                   TX_RING_ALLOC_SIZE(jme->tx_ring_size),
 504                                   txring->alloc,
 505                                   txring->dmaalloc);
 506
 507                 txring->alloc           = NULL;
 508                 txring->desc            = NULL;
 509                 txring->dmaalloc        = 0;
 510                 txring->dma             = 0;
 511         }
 512         txring->next_to_use     = 0;
 513         txring->next_to_clean   = 0;
 514         atomic_set(&txring->nr_free, 0);
 515
 516 }
 517
 518 __always_inline static void
 519 jme_enable_tx_engine(struct jme_adapter *jme)
 520 {
 521         /*
 522          * Select Queue 0
 523          */
 524         jwrite32(jme, JME_TXCS, TXCS_DEFAULT | TXCS_SELECT_QUEUE0);
 525
 526         /*
 527          * Setup TX Queue 0 DMA Bass Address
 528          */
 529         jwrite32(jme, JME_TXDBA_LO, (__u64)jme->txring[0].dma & 0xFFFFFFFFUL);
 530         jwrite32(jme, JME_TXDBA_HI, (__u64)(jme->txring[0].dma) >> 32);
 531         jwrite32(jme, JME_TXNDA, (__u64)jme->txring[0].dma & 0xFFFFFFFFUL);
 532
 533         /*
 534          * Setup TX Descptor Count
 535          */
 536         jwrite32(jme, JME_TXQDC, jme->tx_ring_size);
 537
 538         /*
 539          * Enable TX Engine
 540          */
 541         wmb();
 542         jwrite32(jme, JME_TXCS, jme->reg_txcs |
 543                                 TXCS_SELECT_QUEUE0 |
 544                                 TXCS_ENABLE);
 545
 546 }
 547
 548 __always_inline static void
 549 jme_restart_tx_engine(struct jme_adapter *jme)
 550 {
 551         /*
 552          * Restart TX Engine
 553          */
 554         jwrite32(jme, JME_TXCS, jme->reg_txcs |
 555                                 TXCS_SELECT_QUEUE0 |
 556                                 TXCS_ENABLE);
 557 }
 558
 559 __always_inline static void
 560 jme_disable_tx_engine(struct jme_adapter *jme)
 561 {
 562         int i;
 563         __u32 val;
 564
 565         /*
 566          * Disable TX Engine
 567          */
 568         jwrite32(jme, JME_TXCS, jme->reg_txcs | TXCS_SELECT_QUEUE0);
 569
 570         val = jread32(jme, JME_TXCS);
 571         for(i = JME_TX_DISABLE_TIMEOUT ; (val & TXCS_ENABLE) && i > 0 ; --i)
 572         {
 573                 mdelay(1);
 574                 val = jread32(jme, JME_TXCS);
 575         }
 576
 577         if(!i) {
 578                 jeprintk(jme->dev->name, "Disable TX engine timeout.\n");
 579                 jme_reset_mac_processor(jme);
 580         }
 581
 582
 583 }
 584
 585 static void
 586 jme_set_clean_rxdesc(struct jme_adapter *jme, int i)
 587 {
 588         struct jme_ring *rxring = jme->rxring;
 589         register volatile struct rxdesc* rxdesc = rxring->desc;
 590         struct jme_buffer_info *rxbi = rxring->bufinf;
 591         rxdesc += i;
 592         rxbi += i;
 593
 594         rxdesc->dw[0] = 0;
 595         rxdesc->dw[1] = 0;
 596         rxdesc->desc1.bufaddrh  = cpu_to_le32((__u64)rxbi->mapping >> 32);
 597         rxdesc->desc1.bufaddrl  = cpu_to_le32(
 598                                         (__u64)rxbi->mapping & 0xFFFFFFFFUL);
 599         rxdesc->desc1.datalen   = cpu_to_le16(rxbi->len);
 600         if(jme->dev->features & NETIF_F_HIGHDMA)
 601                 rxdesc->desc1.flags = RXFLAG_64BIT;
 602         wmb();
 603         rxdesc->desc1.flags     |= RXFLAG_OWN | RXFLAG_INT;
 604 }
 605
 606 static int
 607 jme_make_new_rx_buf(struct jme_adapter *jme, int i)
 608 {
 609         struct jme_ring *rxring = &(jme->rxring[0]);
 610         struct jme_buffer_info *rxbi = rxring->bufinf + i;
 611         unsigned long offset;
 612         struct sk_buff* skb;
 613
 614         skb = netdev_alloc_skb(jme->dev,
 615                 jme->dev->mtu + RX_EXTRA_LEN);
 616         if(unlikely(!skb))
 617                 return -ENOMEM;
 618
 619         if(unlikely(offset =
 620                         (unsigned long)(skb->data)
 621                         & ((unsigned long)RX_BUF_DMA_ALIGN - 1)))
 622                 skb_reserve(skb, RX_BUF_DMA_ALIGN - offset);
 623
 624         rxbi->skb = skb;
 625         rxbi->len = skb_tailroom(skb);
 626         rxbi->mapping = pci_map_page(jme->pdev,
 627                                         virt_to_page(skb->data),
 628                                         offset_in_page(skb->data),
 629                                         rxbi->len,
 630                                         PCI_DMA_FROMDEVICE);
 631
 632         return 0;
 633 }
 634
 635 static void
 636 jme_free_rx_buf(struct jme_adapter *jme, int i)
 637 {
 638         struct jme_ring *rxring = &(jme->rxring[0]);
 639         struct jme_buffer_info *rxbi = rxring->bufinf;
 640         rxbi += i;
 641
 642         if(rxbi->skb) {
 643                 pci_unmap_page(jme->pdev,
 644                                  rxbi->mapping,
 645                                  rxbi->len,
 646                                  PCI_DMA_FROMDEVICE);
 647                 dev_kfree_skb(rxbi->skb);
 648                 rxbi->skb = NULL;
 649                 rxbi->mapping = 0;
 650                 rxbi->len = 0;
 651         }
 652 }
 653
 654 static void
 655 jme_free_rx_resources(struct jme_adapter *jme)
 656 {
 657         int i;
 658         struct jme_ring *rxring = &(jme->rxring[0]);
 659
 660         if(rxring->alloc) {
 661                 for(i = 0 ; i < jme->rx_ring_size ; ++i)
 662                         jme_free_rx_buf(jme, i);
 663
 664                 dma_free_coherent(&(jme->pdev->dev),
 665                                   RX_RING_ALLOC_SIZE(jme->rx_ring_size),
 666                                   rxring->alloc,
 667                                   rxring->dmaalloc);
 668                 rxring->alloc    = NULL;
 669                 rxring->desc     = NULL;
 670                 rxring->dmaalloc = 0;
 671                 rxring->dma      = 0;
 672         }
 673         rxring->next_to_use   = 0;
 674         rxring->next_to_clean = 0;
 675 }
 676
 677 static int
 678 jme_setup_rx_resources(struct jme_adapter *jme)
 679 {
 680         int i;
 681         struct jme_ring *rxring = &(jme->rxring[0]);
 682
 683         rxring->alloc = dma_alloc_coherent(&(jme->pdev->dev),
 684                                    RX_RING_ALLOC_SIZE(jme->rx_ring_size),
 685                                    &(rxring->dmaalloc),
 686                                    GFP_ATOMIC);
 687         if(!rxring->alloc) {
 688                 rxring->desc = NULL;
 689                 rxring->dmaalloc = 0;
 690                 rxring->dma = 0;
 691                 return -ENOMEM;
 692         }
 693
 694         /*
 695          * 16 Bytes align
 696          */
 697         rxring->desc            = (void*)ALIGN((unsigned long)(rxring->alloc),
 698                                                 RING_DESC_ALIGN);
 699         rxring->dma             = ALIGN(rxring->dmaalloc, RING_DESC_ALIGN);
 700         rxring->next_to_use     = 0;
 701         rxring->next_to_clean   = 0;
 702
 703         /*
 704          * Initiallize Receive Descriptors
 705          */
 706         for(i = 0 ; i < jme->rx_ring_size ; ++i) {
 707                 if(unlikely(jme_make_new_rx_buf(jme, i))) {
 708                         jme_free_rx_resources(jme);
 709                         return -ENOMEM;
 710                 }
 711
 712                 jme_set_clean_rxdesc(jme, i);
 713         }
 714
 715         return 0;
 716 }
 717
 718 __always_inline static void
 719 jme_enable_rx_engine(struct jme_adapter *jme)
 720 {
 721         /*
 722          * Setup RX DMA Bass Address
 723          */
 724         jwrite32(jme, JME_RXDBA_LO, (__u64)jme->rxring[0].dma & 0xFFFFFFFFUL);
 725         jwrite32(jme, JME_RXDBA_HI, (__u64)(jme->rxring[0].dma) >> 32);
 726         jwrite32(jme, JME_RXNDA, (__u64)jme->rxring[0].dma & 0xFFFFFFFFUL);
 727
 728         /*
 729          * Setup RX Descriptor Count
 730          */
 731         jwrite32(jme, JME_RXQDC, jme->rx_ring_size);
 732
 733         /*
 734          * Setup Unicast Filter
 735          */
 736         jme_set_multi(jme->dev);
 737
 738         /*
 739          * Enable RX Engine
 740          */
 741         wmb();
 742         jwrite32(jme, JME_RXCS, jme->reg_rxcs |
 743                                 RXCS_QUEUESEL_Q0 |
 744                                 RXCS_ENABLE |
 745                                 RXCS_QST);
 746 }
 747
 748 __always_inline static void
 749 jme_restart_rx_engine(struct jme_adapter *jme)
 750 {
 751         /*
 752          * Start RX Engine
 753          */
 754         jwrite32(jme, JME_RXCS, jme->reg_rxcs |
 755                                 RXCS_QUEUESEL_Q0 |
 756                                 RXCS_ENABLE |
 757                                 RXCS_QST);
 758 }
 759
 760
 761 __always_inline static void
 762 jme_disable_rx_engine(struct jme_adapter *jme)
 763 {
 764         int i;
 765         __u32 val;
 766
 767         /*
 768          * Disable RX Engine
 769          */
 770         jwrite32(jme, JME_RXCS, jme->reg_rxcs);
 771
 772         val = jread32(jme, JME_RXCS);
 773         for(i = JME_RX_DISABLE_TIMEOUT ; (val & RXCS_ENABLE) && i > 0 ; --i)
 774         {
 775                 mdelay(1);
 776                 val = jread32(jme, JME_RXCS);
 777         }
 778
 779         if(!i)
 780                 jeprintk(jme->dev->name, "Disable RX engine timeout.\n");
 781
 782 }
 783
 784 static int
 785 jme_rxsum_ok(struct jme_adapter *jme, __u16 flags)
 786 {
 787         if(!(flags & (RXWBFLAG_TCPON | RXWBFLAG_UDPON | RXWBFLAG_IPV4)))
 788                 return false;
 789
 790         if(unlikely((flags & RXWBFLAG_TCPON) &&
 791         !(flags & RXWBFLAG_TCPCS))) {
 792                 csum_dbg(jme->dev->name, "TCP Checksum error.\n");
 793                 return false;
 794         }
 795
 796         if(unlikely((flags & RXWBFLAG_UDPON) &&
 797         !(flags & RXWBFLAG_UDPCS))) {
 798                 csum_dbg(jme->dev->name, "UDP Checksum error.\n");
 799                 return false;
 800         }
 801
 802         if(unlikely((flags & RXWBFLAG_IPV4) &&
 803         !(flags & RXWBFLAG_IPCS))) {
 804                 csum_dbg(jme->dev->name, "IPv4 Checksum error.\n");
 805                 return false;
 806         }
 807
 808         return true;
 809 }
 810
 811 static void
 812 jme_alloc_and_feed_skb(struct jme_adapter *jme, int idx)
 813 {
 814         struct jme_ring *rxring = &(jme->rxring[0]);
 815         volatile struct rxdesc *rxdesc = rxring->desc;
 816         struct jme_buffer_info *rxbi = rxring->bufinf;
 817         struct sk_buff *skb;
 818         int framesize;
 819
 820         rxdesc += idx;
 821         rxbi += idx;
 822
 823         skb = rxbi->skb;
 824         pci_dma_sync_single_for_cpu(jme->pdev,
 825                                         rxbi->mapping,
 826                                         rxbi->len,
 827                                         PCI_DMA_FROMDEVICE);
 828
 829         if(unlikely(jme_make_new_rx_buf(jme, idx))) {
 830                 pci_dma_sync_single_for_device(jme->pdev,
 831                                                 rxbi->mapping,
 832                                                 rxbi->len,
 833                                                 PCI_DMA_FROMDEVICE);
 834
 835                 ++(NET_STAT(jme).rx_dropped);
 836         }
 837         else {
 838                 framesize = le16_to_cpu(rxdesc->descwb.framesize)
 839                                 - RX_PREPAD_SIZE;
 840
 841                 skb_reserve(skb, RX_PREPAD_SIZE);
 842                 skb_put(skb, framesize);
 843                 skb->protocol = eth_type_trans(skb, jme->dev);
 844
 845                 if(jme_rxsum_ok(jme, rxdesc->descwb.flags))
 846                         skb->ip_summed = CHECKSUM_UNNECESSARY;
 847                 else
 848                         skb->ip_summed = CHECKSUM_NONE;
 849
 850
 851                 if(rxdesc->descwb.flags & RXWBFLAG_TAGON) {
 852                         vlan_dbg(jme->dev->name, "VLAN: %04x\n",
 853                                         rxdesc->descwb.vlan);
 854                         if(jme->vlgrp) {
 855                                 vlan_dbg(jme->dev->name,
 856                                         "VLAN Passed to kernel.\n");
 857                                 vlan_hwaccel_rx(skb, jme->vlgrp,
 858                                         le32_to_cpu(rxdesc->descwb.vlan));
 859                                 NET_STAT(jme).rx_bytes += 4;
 860                         }
 861                 }
 862                 else {
 863                         netif_rx(skb);
 864                 }
 865
 866                 if((le16_to_cpu(rxdesc->descwb.flags) & RXWBFLAG_DEST) ==
 867                                 RXWBFLAG_DEST_MUL)
 868                         ++(NET_STAT(jme).multicast);
 869
 870                 jme->dev->last_rx = jiffies;
 871                 NET_STAT(jme).rx_bytes += framesize;
 872                 ++(NET_STAT(jme).rx_packets);
 873         }
 874
 875         jme_set_clean_rxdesc(jme, idx);
 876
 877 }
 878
 879
 880
 881 static int
 882 jme_process_receive(struct jme_adapter *jme, int limit)
 883 {
 884         struct jme_ring *rxring = &(jme->rxring[0]);
 885         volatile struct rxdesc *rxdesc = rxring->desc;
 886         int i, j, ccnt, desccnt, mask = jme->rx_ring_mask;
 887
 888         if(unlikely(!atomic_dec_and_test(&jme->rx_cleaning)))
 889                 goto out_inc;
 890
 891         if(unlikely(atomic_read(&jme->link_changing) != 1))
 892                 goto out_inc;
 893
 894         if(unlikely(!netif_carrier_ok(jme->dev)))
 895                 goto out_inc;
 896
 897         i = rxring->next_to_clean;
 898         while( limit-- > 0 )
 899         {
 900                 rxdesc = rxring->desc;
 901                 rxdesc += i;
 902
 903                 if((rxdesc->descwb.flags & RXWBFLAG_OWN) ||
 904                 !(rxdesc->descwb.desccnt & RXWBDCNT_WBCPL))
 905                         goto out;
 906
 907                 desccnt = rxdesc->descwb.desccnt & RXWBDCNT_DCNT;
 908
 909                 rx_dbg(jme->dev->name, "RX: Cleaning %d\n", i);
 910
 911                 if(unlikely(desccnt > 1 ||
 912                 rxdesc->descwb.errstat & RXWBERR_ALLERR)) {
 913
 914                         if(rxdesc->descwb.errstat & RXWBERR_CRCERR)
 915                                 ++(NET_STAT(jme).rx_crc_errors);
 916                         else if(rxdesc->descwb.errstat & RXWBERR_OVERUN)
 917                                 ++(NET_STAT(jme).rx_fifo_errors);
 918                         else
 919                                 ++(NET_STAT(jme).rx_errors);
 920
 921                         if(desccnt > 1) {
 922                                 rx_dbg(jme->dev->name,
 923                                         "RX: More than one(%d) descriptor, "
 924                                         "framelen=%d\n",
 925                                         desccnt, le16_to_cpu(rxdesc->descwb.framesize));
 926                                 limit -= desccnt - 1;
 927                         }
 928
 929                         for(j = i, ccnt = desccnt ; ccnt-- ; ) {
 930                                 jme_set_clean_rxdesc(jme, j);
 931                                 j = (j + 1) & (mask);
 932                         }
 933
 934                 }
 935                 else {
 936                         jme_alloc_and_feed_skb(jme, i);
 937                 }
 938
 939                 i = (i + desccnt) & (mask);
 940         }
 941
 942
 943 out:
 944         rx_dbg(jme->dev->name, "RX: Stop at %d\n", i);
 945         rx_dbg(jme->dev->name, "RX: RXNDA offset %d\n",
 946                 (jread32(jme, JME_RXNDA) - jread32(jme, JME_RXDBA_LO))
 947                         >> 4);
 948
 949         rxring->next_to_clean = i;
 950
 951 out_inc:
 952         atomic_inc(&jme->rx_cleaning);
 953
 954         return limit > 0 ? limit : 0;
 955
 956 }
 957
 958 static void
 959 jme_attempt_pcc(struct dynpcc_info *dpi, int atmp)
 960 {
 961         if(likely(atmp == dpi->cur)) {
 962                 dpi->cnt = 0;
 963                 return;
 964         }
 965
 966         if(dpi->attempt == atmp) {
 967                 ++(dpi->cnt);
 968         }
 969         else {
 970                 dpi->attempt = atmp;
 971                 dpi->cnt = 0;
 972         }
 973
 974 }
 975
 976 static void
 977 jme_dynamic_pcc(struct jme_adapter *jme)
 978 {
 979         register struct dynpcc_info *dpi = &(jme->dpi);
 980
 981         if((NET_STAT(jme).rx_bytes - dpi->last_bytes) > PCC_P3_THRESHOLD)
 982                 jme_attempt_pcc(dpi, PCC_P3);
 983         else if((NET_STAT(jme).rx_packets - dpi->last_pkts) > PCC_P2_THRESHOLD
 984         || dpi->intr_cnt > PCC_INTR_THRESHOLD)
 985                 jme_attempt_pcc(dpi, PCC_P2);
 986         else
 987                 jme_attempt_pcc(dpi, PCC_P1);
 988
 989         if(unlikely(dpi->attempt != dpi->cur && dpi->cnt > 5)) {
 990                 jme_set_rx_pcc(jme, dpi->attempt);
 991                 dpi->cur = dpi->attempt;
 992                 dpi->cnt = 0;
 993         }
 994 }
 995
 996 static void
 997 jme_start_pcc_timer(struct jme_adapter *jme)
 998 {
 999         struct dynpcc_info *dpi = &(jme->dpi);
1000         dpi->last_bytes         = NET_STAT(jme).rx_bytes;
1001         dpi->last_pkts          = NET_STAT(jme).rx_packets;
1002         dpi->intr_cnt           = 0;
1003         jwrite32(jme, JME_TMCSR,
1004                 TMCSR_EN | ((0xFFFFFF - PCC_INTERVAL_US) & TMCSR_CNT));
1005 }
1006
1007 __always_inline static void
1008 jme_stop_pcc_timer(struct jme_adapter *jme)
1009 {
1010         jwrite32(jme, JME_TMCSR, 0);
1011 }
1012
1013 static void
1014 jme_pcc_tasklet(unsigned long arg)
1015 {
1016         struct jme_adapter *jme = (struct jme_adapter*)arg;
1017         struct net_device *netdev = jme->dev;
1018
1019
1020         if(unlikely(!netif_carrier_ok(netdev) ||
1021                 (atomic_read(&jme->link_changing) != 1)
1022         )) {
1023                 jme_stop_pcc_timer(jme);
1024                 return;
1025         }
1026
1027         if(!(jme->flags & JME_FLAG_POLL))
1028                 jme_dynamic_pcc(jme);
1029
1030         jme_start_pcc_timer(jme);
1031 }
1032
1033 __always_inline static void
1034 jme_polling_mode(struct jme_adapter *jme)
1035 {
1036         jme_set_rx_pcc(jme, PCC_OFF);
1037 }
1038
1039 __always_inline static void
1040 jme_interrupt_mode(struct jme_adapter *jme)
1041 {
1042         jme_set_rx_pcc(jme, PCC_P1);
1043 }
1044
1045 static void
1046 jme_link_change_tasklet(unsigned long arg)
1047 {
1048         struct jme_adapter *jme = (struct jme_adapter*)arg;
1049         struct net_device *netdev = jme->dev;
1050         int timeout = WAIT_TASKLET_TIMEOUT;
1051         int rc;
1052
1053         if(!atomic_dec_and_test(&jme->link_changing))
1054                 goto out;
1055
1056         if(jme_check_link(netdev, 1) && jme->old_mtu == netdev->mtu)
1057                 goto out;
1058
1059         jme->old_mtu = netdev->mtu;
1060         netif_stop_queue(netdev);
1061
1062         while(--timeout > 0 &&
1063                 (
1064                 atomic_read(&jme->rx_cleaning) != 1 ||
1065                 atomic_read(&jme->tx_cleaning) != 1
1066                 )) {
1067
1068                 mdelay(1);
1069         }
1070
1071         if(netif_carrier_ok(netdev)) {
1072                 jme_stop_pcc_timer(jme);
1073                 jme_reset_mac_processor(jme);
1074                 jme_free_rx_resources(jme);
1075                 jme_free_tx_resources(jme);
1076
1077                 if(jme->flags & JME_FLAG_POLL) {
1078                         jme_polling_mode(jme);
1079                         napi_disable(&jme->napi);
1080                 }
1081         }
1082
1083         jme_check_link(netdev, 0);
1084         if(netif_carrier_ok(netdev)) {
1085                 rc = jme_setup_rx_resources(jme);
1086                 if(rc) {
1087                         jeprintk(netdev->name,
1088                                 "Allocating resources for RX error"
1089                                 ", Device STOPPED!\n");
1090                         goto out;
1091                 }
1092
1093
1094                 rc = jme_setup_tx_resources(jme);
1095                 if(rc) {
1096                         jeprintk(netdev->name,
1097                                 "Allocating resources for TX error"
1098                                 ", Device STOPPED!\n");
1099                         goto err_out_free_rx_resources;
1100                 }
1101
1102                 jme_enable_rx_engine(jme);
1103                 jme_enable_tx_engine(jme);
1104
1105                 netif_start_queue(netdev);
1106
1107                 if(jme->flags & JME_FLAG_POLL) {
1108                         napi_enable(&jme->napi);
1109                         jme_interrupt_mode(jme);
1110                 }
1111
1112                 jme_start_pcc_timer(jme);
1113         }
1114
1115         goto out;
1116
1117 err_out_free_rx_resources:
1118         jme_free_rx_resources(jme);
1119 out:
1120         atomic_inc(&jme->link_changing);
1121 }
1122
1123 static void
1124 jme_rx_clean_tasklet(unsigned long arg)
1125 {
1126         struct jme_adapter *jme = (struct jme_adapter*)arg;
1127         struct dynpcc_info *dpi = &(jme->dpi);
1128
1129         jme_process_receive(jme, jme->rx_ring_size);
1130         ++(dpi->intr_cnt);
1131
1132 }
1133
1134 static int
1135 jme_poll(struct napi_struct *napi, int budget)
1136 {
1137         struct jme_adapter *jme = container_of(napi, struct jme_adapter, napi);
1138         struct net_device *netdev = jme->dev;
1139         int rest;
1140
1141         rest = jme_process_receive(jme, budget);
1142
1143         while(!atomic_dec_and_test(&jme->rx_empty)) {
1144                 ++(NET_STAT(jme).rx_dropped);
1145                 jme_restart_rx_engine(jme);
1146         }
1147         atomic_inc(&jme->rx_empty);
1148
1149         if(rest) {
1150                 netif_rx_complete(netdev, napi);
1151                 jme_interrupt_mode(jme);
1152         }
1153
1154         return budget - rest;
1155 }
1156
1157 static void
1158 jme_rx_empty_tasklet(unsigned long arg)
1159 {
1160         struct jme_adapter *jme = (struct jme_adapter*)arg;
1161
1162         if(unlikely(atomic_read(&jme->link_changing) != 1))
1163                 return;
1164
1165         if(unlikely(!netif_carrier_ok(jme->dev)))
1166                 return;
1167
1168         queue_dbg(jme->dev->name, "RX Queue Full!\n");
1169
1170         jme_rx_clean_tasklet(arg);
1171         jme_restart_rx_engine(jme);
1172 }
1173
1174 static void
1175 jme_wake_queue_if_stopped(struct jme_adapter *jme)
1176 {
1177         struct jme_ring *txring = jme->txring;
1178
1179         smp_wmb();
1180         if(unlikely(netif_queue_stopped(jme->dev) &&
1181         atomic_read(&txring->nr_free) >= (jme->tx_wake_threshold))) {
1182
1183                 queue_dbg(jme->dev->name, "TX Queue Waked.\n");
1184                 netif_wake_queue(jme->dev);
1185
1186         }
1187
1188 }
1189
1190 static void
1191 jme_tx_clean_tasklet(unsigned long arg)
1192 {
1193         struct jme_adapter *jme = (struct jme_adapter*)arg;
1194         struct jme_ring *txring = &(jme->txring[0]);
1195         volatile struct txdesc *txdesc = txring->desc;
1196         struct jme_buffer_info *txbi = txring->bufinf, *ctxbi, *ttxbi;
1197         int i, j, cnt = 0, max, err, mask;
1198
1199         if(unlikely(!atomic_dec_and_test(&jme->tx_cleaning)))
1200                 goto out;
1201
1202         if(unlikely(atomic_read(&jme->link_changing) != 1))
1203                 goto out;
1204
1205         if(unlikely(!netif_carrier_ok(jme->dev)))
1206                 goto out;
1207
1208         max = jme->tx_ring_size - atomic_read(&txring->nr_free);
1209         mask = jme->tx_ring_mask;
1210
1211         tx_dbg(jme->dev->name, "Tx Tasklet: In\n");
1212
1213         for(i = txring->next_to_clean ; cnt < max ; ) {
1214
1215                 ctxbi = txbi + i;
1216
1217                 if(likely(ctxbi->skb &&
1218                 !(txdesc[i].descwb.flags & TXWBFLAG_OWN))) {
1219
1220                         err = txdesc[i].descwb.flags & TXWBFLAG_ALLERR;
1221
1222                         tx_dbg(jme->dev->name,
1223                                 "Tx Tasklet: Clean %d+%d\n",
1224                                 i, ctxbi->nr_desc);
1225
1226                         for(j = 1 ; j < ctxbi->nr_desc ; ++j) {
1227                                 ttxbi = txbi + ((i + j) & (mask));
1228                                 txdesc[(i + j) & (mask)].dw[0] = 0;
1229
1230                                 pci_unmap_page(jme->pdev,
1231                                                  ttxbi->mapping,
1232                                                  ttxbi->len,
1233                                                  PCI_DMA_TODEVICE);
1234
1235                                 ttxbi->mapping = 0;
1236                                 ttxbi->len = 0;
1237                         }
1238
1239                         dev_kfree_skb(ctxbi->skb);
1240
1241                         cnt += ctxbi->nr_desc;
1242
1243                         if(unlikely(err))
1244                                 ++(NET_STAT(jme).tx_carrier_errors);
1245                         else {
1246                                 ++(NET_STAT(jme).tx_packets);
1247                                 NET_STAT(jme).tx_bytes += ctxbi->len;
1248                         }
1249
1250                         ctxbi->skb = NULL;
1251                         ctxbi->len = 0;
1252                 }
1253                 else {
1254                         if(!ctxbi->skb)
1255                                 tx_dbg(jme->dev->name,
1256                                         "Tx Tasklet:"
1257                                         " Stopped due to no skb.\n");
1258                         else
1259                                 tx_dbg(jme->dev->name,
1260                                         "Tx Tasklet:"
1261                                         "Stopped due to not done.\n");
1262                         break;
1263                 }
1264
1265                 i = (i + ctxbi->nr_desc) & mask;
1266
1267                 ctxbi->nr_desc = 0;
1268         }
1269
1270         tx_dbg(jme->dev->name,
1271                 "Tx Tasklet: Stop %d Jiffies %lu\n",
1272                 i, jiffies);
1273         txring->next_to_clean = i;
1274
1275         atomic_add(cnt, &txring->nr_free);
1276
1277         jme_wake_queue_if_stopped(jme);
1278
1279 out:
1280         atomic_inc(&jme->tx_cleaning);
1281 }
1282
1283 static void
1284 jme_intr_msi(struct jme_adapter *jme, __u32 intrstat)
1285 {
1286         /*
1287          * Disable interrupt
1288          */
1289         jwrite32f(jme, JME_IENC, INTR_ENABLE);
1290
1291         /*
1292          * Write 1 clear interrupt status
1293          */
1294         jwrite32f(jme, JME_IEVE, intrstat);
1295
1296         if(intrstat & (INTR_LINKCH | INTR_SWINTR)) {
1297                 tasklet_schedule(&jme->linkch_task);
1298                 goto out_reenable;
1299         }
1300
1301         if(intrstat & INTR_TMINTR)
1302                 tasklet_schedule(&jme->pcc_task);
1303
1304         if(intrstat & (INTR_PCCTXTO | INTR_PCCTX))
1305                 tasklet_schedule(&jme->txclean_task);
1306
1307         if(jme->flags & JME_FLAG_POLL) {
1308                 if(intrstat & INTR_RX0EMP)
1309                         atomic_inc(&jme->rx_empty);
1310
1311                 if((intrstat & (INTR_PCCRX0TO | INTR_PCCRX0 | INTR_RX0EMP))) {
1312                         if(likely(
1313                         netif_rx_schedule_prep(jme->dev, &jme->napi))) {
1314                                 jme_polling_mode(jme);
1315                                 __netif_rx_schedule(jme->dev, &jme->napi);
1316                         }
1317                 }
1318         }
1319         else {
1320                 if(intrstat & INTR_RX0EMP)
1321                         tasklet_schedule(&jme->rxempty_task);
1322
1323                 if(intrstat & (INTR_PCCRX0TO | INTR_PCCRX0))
1324                         tasklet_schedule(&jme->rxclean_task);
1325         }
1326
1327 out_reenable:
1328         /*
1329          * Re-enable interrupt
1330          */
1331         jwrite32f(jme, JME_IENS, INTR_ENABLE);
1332
1333
1334 }
1335
1336 static irqreturn_t
1337 jme_intr(int irq, void *dev_id)
1338 {
1339         struct net_device *netdev = dev_id;
1340         struct jme_adapter *jme = netdev_priv(netdev);
1341         __u32 intrstat;
1342
1343         intrstat = jread32(jme, JME_IEVE);
1344
1345         /*
1346          * Check if it's really an interrupt for us
1347          */
1348         if(unlikely(intrstat == 0))
1349                 return IRQ_NONE;
1350
1351         /*
1352          * Check if the device still exist
1353          */
1354         if(unlikely(intrstat == ~((typeof(intrstat))0)))
1355                 return IRQ_NONE;
1356
1357         jme_intr_msi(jme, intrstat);
1358
1359         return IRQ_HANDLED;
1360 }
1361
1362 static irqreturn_t
1363 jme_msi(int irq, void *dev_id)
1364 {
1365         struct net_device *netdev = dev_id;
1366         struct jme_adapter *jme = netdev_priv(netdev);
1367         __u32 intrstat;
1368
1369         pci_dma_sync_single_for_cpu(jme->pdev,
1370                                     jme->shadow_dma,
1371                                     sizeof(__u32) * SHADOW_REG_NR,
1372                                     PCI_DMA_FROMDEVICE);
1373         intrstat = jme->shadow_regs[SHADOW_IEVE];
1374         jme->shadow_regs[SHADOW_IEVE] = 0;
1375
1376         jme_intr_msi(jme, intrstat);
1377
1378         return IRQ_HANDLED;
1379 }
1380
1381
1382 static void
1383 jme_reset_link(struct jme_adapter *jme)
1384 {
1385         jwrite32(jme, JME_TMCSR, TMCSR_SWIT);
1386 }
1387
1388 static void
1389 jme_restart_an(struct jme_adapter *jme)
1390 {
1391         __u32 bmcr;
1392         unsigned long flags;
1393
1394         spin_lock_irqsave(&jme->phy_lock, flags);
1395         bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
1396         bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
1397         jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, bmcr);
1398         spin_unlock_irqrestore(&jme->phy_lock, flags);
1399 }
1400
1401 static int
1402 jme_request_irq(struct jme_adapter *jme)
1403 {
1404         int rc;
1405         struct net_device *netdev = jme->dev;
1406         irq_handler_t handler = jme_intr;
1407         int irq_flags = IRQF_SHARED;
1408
1409         if (!pci_enable_msi(jme->pdev)) {
1410                 jme->flags |= JME_FLAG_MSI;
1411                 handler = jme_msi;
1412                 irq_flags = 0;
1413         }
1414
1415         rc = request_irq(jme->pdev->irq, handler, irq_flags, netdev->name,
1416                           netdev);
1417         if(rc) {
1418                 jeprintk(netdev->name,
1419                         "Unable to request %s interrupt (return: %d)\n",
1420                         jme->flags & JME_FLAG_MSI ? "MSI":"INTx", rc);
1421
1422                 if(jme->flags & JME_FLAG_MSI) {
1423                         pci_disable_msi(jme->pdev);
1424                         jme->flags &= ~JME_FLAG_MSI;
1425                 }
1426         }
1427         else {
1428                 netdev->irq = jme->pdev->irq;
1429         }
1430
1431         return rc;
1432 }
1433
1434 static void
1435 jme_free_irq(struct jme_adapter *jme)
1436 {
1437         free_irq(jme->pdev->irq, jme->dev);
1438         if (jme->flags & JME_FLAG_MSI) {
1439                 pci_disable_msi(jme->pdev);
1440                 jme->flags &= ~JME_FLAG_MSI;
1441                 jme->dev->irq = jme->pdev->irq;
1442         }
1443 }
1444
1445 static int
1446 jme_open(struct net_device *netdev)
1447 {
1448         struct jme_adapter *jme = netdev_priv(netdev);
1449         int rc, timeout = 100;
1450
1451         while(
1452                 --timeout > 0 &&
1453                 (
1454                 atomic_read(&jme->link_changing) != 1 ||
1455                 atomic_read(&jme->rx_cleaning) != 1 ||
1456                 atomic_read(&jme->tx_cleaning) != 1
1457                 )
1458         )
1459                 msleep(10);
1460
1461         if(!timeout) {
1462                 rc = -EBUSY;
1463                 goto err_out;
1464         }
1465
1466         jme_clear_pm(jme);
1467         jme_reset_mac_processor(jme);
1468
1469         rc = jme_request_irq(jme);
1470         if(rc)
1471                 goto err_out;
1472
1473         jme_enable_shadow(jme);
1474         jme_start_irq(jme);
1475
1476         if(jme->flags & JME_FLAG_SSET)
1477                 jme_set_settings(netdev, &jme->old_ecmd);
1478         else
1479                 jme_reset_phy_processor(jme);
1480
1481         jme_reset_link(jme);
1482
1483         return 0;
1484
1485 err_out:
1486         netif_stop_queue(netdev);
1487         netif_carrier_off(netdev);
1488         return rc;
1489 }
1490
1491 static void
1492 jme_set_100m_half(struct jme_adapter *jme)
1493 {
1494         __u32 bmcr, tmp;
1495
1496         bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
1497         tmp = bmcr & ~(BMCR_ANENABLE | BMCR_SPEED100 |
1498                        BMCR_SPEED1000 | BMCR_FULLDPLX);
1499         tmp |= BMCR_SPEED100;
1500
1501         if (bmcr != tmp)
1502                 jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, tmp);
1503
1504         jwrite32(jme, JME_GHC, GHC_SPEED_100M);
1505 }
1506
1507 static void
1508 jme_phy_off(struct jme_adapter *jme)
1509 {
1510         jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, BMCR_PDOWN);
1511 }
1512
1513
1514 static int
1515 jme_close(struct net_device *netdev)
1516 {
1517         struct jme_adapter *jme = netdev_priv(netdev);
1518
1519         netif_stop_queue(netdev);
1520         netif_carrier_off(netdev);
1521
1522         jme_stop_irq(jme);
1523         jme_disable_shadow(jme);
1524         jme_free_irq(jme);
1525
1526         if(jme->flags & JME_FLAG_POLL)
1527                 napi_disable(&jme->napi);
1528
1529         tasklet_kill(&jme->linkch_task);
1530         tasklet_kill(&jme->txclean_task);
1531         tasklet_kill(&jme->rxclean_task);
1532         tasklet_kill(&jme->rxempty_task);
1533
1534         jme_reset_mac_processor(jme);
1535         jme_free_rx_resources(jme);
1536         jme_free_tx_resources(jme);
1537         jme->phylink = 0;
1538         jme_phy_off(jme);
1539
1540         return 0;
1541 }
1542
1543 static int
1544 jme_alloc_txdesc(struct jme_adapter *jme,
1545                         struct sk_buff *skb)
1546 {
1547         struct jme_ring *txring = jme->txring;
1548         int idx, nr_alloc, mask = jme->tx_ring_mask;
1549
1550         idx = txring->next_to_use;
1551         nr_alloc = skb_shinfo(skb)->nr_frags + 2;
1552
1553         if(unlikely(atomic_read(&txring->nr_free) < nr_alloc))
1554                 return -1;
1555
1556         atomic_sub(nr_alloc, &txring->nr_free);
1557
1558         txring->next_to_use = (txring->next_to_use + nr_alloc) & mask;
1559
1560         return idx;
1561 }
1562
1563 static void
1564 jme_fill_tx_map(struct pci_dev *pdev,
1565                 volatile struct txdesc *txdesc,
1566                 struct jme_buffer_info *txbi,
1567                 struct page *page,
1568                 __u32 page_offset,
1569                 __u32 len,
1570                 __u8 hidma)
1571 {
1572         dma_addr_t dmaaddr;
1573
1574         dmaaddr = pci_map_page(pdev,
1575                                 page,
1576                                 page_offset,
1577                                 len,
1578                                 PCI_DMA_TODEVICE);
1579
1580         pci_dma_sync_single_for_device(pdev,
1581                                        dmaaddr,
1582                                        len,
1583                                        PCI_DMA_TODEVICE);
1584
1585         txdesc->dw[0] = 0;
1586         txdesc->dw[1] = 0;
1587         txdesc->desc2.flags     = TXFLAG_OWN;
1588         txdesc->desc2.flags     |= (hidma)?TXFLAG_64BIT:0;
1589         txdesc->desc2.datalen   = cpu_to_le16(len);
1590         txdesc->desc2.bufaddrh  = cpu_to_le32((__u64)dmaaddr >> 32);
1591         txdesc->desc2.bufaddrl  = cpu_to_le32(
1592                                         (__u64)dmaaddr & 0xFFFFFFFFUL);
1593
1594         txbi->mapping = dmaaddr;
1595         txbi->len = len;
1596 }
1597
1598 static void
1599 jme_map_tx_skb(struct jme_adapter *jme, struct sk_buff *skb, int idx)
1600 {
1601         struct jme_ring *txring = jme->txring;
1602         volatile struct txdesc *txdesc = txring->desc, *ctxdesc;
1603         struct jme_buffer_info *txbi = txring->bufinf, *ctxbi;
1604         __u8 hidma = jme->dev->features & NETIF_F_HIGHDMA;
1605         int i, nr_frags = skb_shinfo(skb)->nr_frags;
1606         int mask = jme->tx_ring_mask;
1607         struct skb_frag_struct *frag;
1608         __u32 len;
1609
1610         for(i = 0 ; i < nr_frags ; ++i) {
1611                 frag = &skb_shinfo(skb)->frags[i];
1612                 ctxdesc = txdesc + ((idx + i + 2) & (mask));
1613                 ctxbi = txbi + ((idx + i + 2) & (mask));
1614
1615                 jme_fill_tx_map(jme->pdev, ctxdesc, ctxbi, frag->page,
1616                                  frag->page_offset, frag->size, hidma);
1617         }
1618
1619         len = skb_is_nonlinear(skb)?skb_headlen(skb):skb->len;
1620         ctxdesc = txdesc + ((idx + 1) & (mask));
1621         ctxbi = txbi + ((idx + 1) & (mask));
1622         jme_fill_tx_map(jme->pdev, ctxdesc, ctxbi, virt_to_page(skb->data),
1623                         offset_in_page(skb->data), len, hidma);
1624
1625 }
1626
1627 static int
1628 jme_expand_header(struct jme_adapter *jme, struct sk_buff *skb)
1629 {
1630         if(unlikely(skb_shinfo(skb)->gso_size &&
1631                         skb_header_cloned(skb) &&
1632                         pskb_expand_head(skb, 0, 0, GFP_ATOMIC))) {
1633                 dev_kfree_skb(skb);
1634                 return -1;
1635         }
1636
1637         return 0;
1638 }
1639
1640 static int
1641 jme_tx_tso(struct sk_buff *skb,
1642                 volatile __u16 *mss, __u8 *flags)
1643 {
1644         if((*mss = (skb_shinfo(skb)->gso_size << TXDESC_MSS_SHIFT))) {
1645                 *flags |= TXFLAG_LSEN;
1646
1647                 if(skb->protocol == __constant_htons(ETH_P_IP)) {
1648                         struct iphdr *iph = ip_hdr(skb);
1649
1650                         iph->check = 0;
1651                         tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
1652                                                                 iph->daddr, 0,
1653                                                                 IPPROTO_TCP,
1654                                                                 0);
1655                 }
1656                 else {
1657                         struct ipv6hdr *ip6h = ipv6_hdr(skb);
1658
1659                         tcp_hdr(skb)->check = ~csum_ipv6_magic(&ip6h->saddr,
1660                                                                 &ip6h->daddr, 0,
1661                                                                 IPPROTO_TCP,
1662                                                                 0);
1663                 }
1664
1665                 return 0;
1666         }
1667
1668         return 1;
1669 }
1670
1671 static void
1672 jme_tx_csum(struct sk_buff *skb, __u8 *flags)
1673 {
1674         if(skb->ip_summed == CHECKSUM_PARTIAL) {
1675                 __u8 ip_proto;
1676
1677                 switch (skb->protocol) {
1678                 case __constant_htons(ETH_P_IP):
1679                         ip_proto = ip_hdr(skb)->protocol;
1680                         break;
1681                 case __constant_htons(ETH_P_IPV6):
1682                         ip_proto = ipv6_hdr(skb)->nexthdr;
1683                         break;
1684                 default:
1685                         ip_proto = 0;
1686                         break;
1687                 }
1688
1689                 switch(ip_proto) {
1690                 case IPPROTO_TCP:
1691                         *flags |= TXFLAG_TCPCS;
1692                         break;
1693                 case IPPROTO_UDP:
1694                         *flags |= TXFLAG_UDPCS;
1695                         break;
1696                 default:
1697                         jeprintk("jme", "Error upper layer protocol.\n");
1698                         break;
1699                 }
1700         }
1701 }
1702
1703 __always_inline static void
1704 jme_tx_vlan(struct sk_buff *skb, volatile __u16 *vlan, __u8 *flags)
1705 {
1706         if(vlan_tx_tag_present(skb)) {
1707                 vlan_dbg("jme", "Tag found!(%04x)\n", vlan_tx_tag_get(skb));
1708                 *flags |= TXFLAG_TAGON;
1709                 *vlan = vlan_tx_tag_get(skb);
1710         }
1711 }
1712
1713 static int
1714 jme_fill_first_tx_desc(struct jme_adapter *jme, struct sk_buff *skb, int idx)
1715 {
1716         struct jme_ring *txring = jme->txring;
1717         volatile struct txdesc *txdesc;
1718         struct jme_buffer_info *txbi;
1719         __u8 flags;
1720
1721         txdesc = (volatile struct txdesc*)txring->desc + idx;
1722         txbi = txring->bufinf + idx;
1723
1724         txdesc->dw[0] = 0;
1725         txdesc->dw[1] = 0;
1726         txdesc->dw[2] = 0;
1727         txdesc->dw[3] = 0;
1728         txdesc->desc1.pktsize = cpu_to_le16(skb->len);
1729         /*
1730          * Set OWN bit at final.
1731          * When kernel transmit faster than NIC.
1732          * And NIC trying to send this descriptor before we tell
1733          * it to start sending this TX queue.
1734          * Other fields are already filled correctly.
1735          */
1736         wmb();
1737         flags = TXFLAG_OWN | TXFLAG_INT;
1738         //Set checksum flags while not tso
1739         if(jme_tx_tso(skb, &txdesc->desc1.mss, &flags))
1740                 jme_tx_csum(skb, &flags);
1741         jme_tx_vlan(skb, &txdesc->desc1.vlan, &flags);
1742         txdesc->desc1.flags = flags;
1743         /*
1744          * Set tx buffer info after telling NIC to send
1745          * For better tx_clean timing
1746          */
1747         wmb();
1748         txbi->nr_desc = skb_shinfo(skb)->nr_frags + 2;
1749         txbi->skb = skb;
1750         txbi->len = skb->len;
1751
1752         return 0;
1753 }
1754
1755 static void
1756 jme_stop_queue_if_full(struct jme_adapter *jme)
1757 {
1758         struct jme_ring *txring = jme->txring;
1759
1760         smp_wmb();
1761         if(unlikely(atomic_read(&txring->nr_free) < (MAX_SKB_FRAGS+2))) {
1762                 netif_stop_queue(jme->dev);
1763                 queue_dbg(jme->dev->name, "TX Queue Paused.\n");
1764                 smp_wmb();
1765                 if (atomic_read(&txring->nr_free) >= (jme->tx_wake_threshold)) {
1766                         netif_wake_queue(jme->dev);
1767                         queue_dbg(jme->dev->name, "TX Queue Fast Waked.\n");
1768                 }
1769         }
1770
1771 }
1772
1773 /*
1774  * This function is already protected by netif_tx_lock()
1775  */
1776 static int
1777 jme_start_xmit(struct sk_buff *skb, struct net_device *netdev)
1778 {
1779         struct jme_adapter *jme = netdev_priv(netdev);
1780         int idx;
1781
1782         if(skb_shinfo(skb)->nr_frags) {
1783                 tx_dbg(netdev->name, "Frags: %d Headlen: %d Len: %d MSS: %d Sum:%d\n",
1784                         skb_shinfo(skb)->nr_frags,
1785                         skb_headlen(skb),
1786                         skb->len,
1787                         skb_shinfo(skb)->gso_size,
1788                         skb->ip_summed);
1789         }
1790
1791         if(unlikely(jme_expand_header(jme, skb))) {
1792                 ++(NET_STAT(jme).tx_dropped);
1793                 return NETDEV_TX_OK;
1794         }
1795
1796         idx = jme_alloc_txdesc(jme, skb);
1797
1798         if(unlikely(idx<0)) {
1799                 netif_stop_queue(netdev);
1800                 jeprintk(netdev->name,
1801                                 "BUG! Tx ring full when queue awake!\n");
1802
1803                 return NETDEV_TX_BUSY;
1804         }
1805
1806         jme_map_tx_skb(jme, skb, idx);
1807         jme_fill_first_tx_desc(jme, skb, idx);
1808
1809         tx_dbg(jme->dev->name, "Xmit: %d+%d\n", idx, skb_shinfo(skb)->nr_frags + 2);
1810
1811         jwrite32(jme, JME_TXCS, jme->reg_txcs |
1812                                 TXCS_SELECT_QUEUE0 |
1813                                 TXCS_QUEUE0S |
1814                                 TXCS_ENABLE);
1815         netdev->trans_start = jiffies;
1816
1817         jme_stop_queue_if_full(jme);
1818
1819         return NETDEV_TX_OK;
1820 }
1821
1822 static int
1823 jme_set_macaddr(struct net_device *netdev, void *p)
1824 {
1825         struct jme_adapter *jme = netdev_priv(netdev);
1826         struct sockaddr *addr = p;
1827         __u32 val;
1828
1829         if(netif_running(netdev))
1830                 return -EBUSY;
1831
1832         spin_lock(&jme->macaddr_lock);
1833         memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
1834
1835         val = addr->sa_data[3] << 24 |
1836               addr->sa_data[2] << 16 |
1837               addr->sa_data[1] <<  8 |
1838               addr->sa_data[0];
1839         jwrite32(jme, JME_RXUMA_LO, val);
1840         val = addr->sa_data[5] << 8 |
1841               addr->sa_data[4];
1842         jwrite32(jme, JME_RXUMA_HI, val);
1843         spin_unlock(&jme->macaddr_lock);
1844
1845         return 0;
1846 }
1847
1848 static void
1849 jme_set_multi(struct net_device *netdev)
1850 {
1851         struct jme_adapter *jme = netdev_priv(netdev);
1852         u32 mc_hash[2] = {};
1853         int i;
1854         unsigned long flags;
1855
1856         spin_lock_irqsave(&jme->rxmcs_lock, flags);
1857
1858         jme->reg_rxmcs |= RXMCS_BRDFRAME | RXMCS_UNIFRAME;
1859
1860         if (netdev->flags & IFF_PROMISC) {
1861                 jme->reg_rxmcs |= RXMCS_ALLFRAME;
1862         }
1863         else if (netdev->flags & IFF_ALLMULTI) {
1864                 jme->reg_rxmcs |= RXMCS_ALLMULFRAME;
1865         }
1866         else if(netdev->flags & IFF_MULTICAST) {
1867                 struct dev_mc_list *mclist;
1868                 int bit_nr;
1869
1870                 jme->reg_rxmcs |= RXMCS_MULFRAME | RXMCS_MULFILTERED;
1871                 for (i = 0, mclist = netdev->mc_list;
1872                         mclist && i < netdev->mc_count;
1873                         ++i, mclist = mclist->next) {
1874
1875                         bit_nr = ether_crc(ETH_ALEN, mclist->dmi_addr) & 0x3F;
1876                         mc_hash[bit_nr >> 5] |= 1 << (bit_nr & 0x1F);
1877                 }
1878
1879                 jwrite32(jme, JME_RXMCHT_LO, mc_hash[0]);
1880                 jwrite32(jme, JME_RXMCHT_HI, mc_hash[1]);
1881         }
1882
1883         wmb();
1884         jwrite32(jme, JME_RXMCS, jme->reg_rxmcs);
1885
1886         spin_unlock_irqrestore(&jme->rxmcs_lock, flags);
1887 }
1888
1889 static int
1890 jme_change_mtu(struct net_device *netdev, int new_mtu)
1891 {
1892         struct jme_adapter *jme = netdev_priv(netdev);
1893
1894         if(new_mtu == jme->old_mtu)
1895                 return 0;
1896
1897         if (((new_mtu + ETH_HLEN) > MAX_ETHERNET_JUMBO_PACKET_SIZE) ||
1898                 ((new_mtu) < IPV6_MIN_MTU))
1899                 return -EINVAL;
1900
1901         if(new_mtu > 4000) {
1902                 jme->reg_rxcs &= ~RXCS_FIFOTHNP;
1903                 jme->reg_rxcs |= RXCS_FIFOTHNP_64QW;
1904                 jme_restart_rx_engine(jme);
1905         }
1906         else {
1907                 jme->reg_rxcs &= ~RXCS_FIFOTHNP;
1908                 jme->reg_rxcs |= RXCS_FIFOTHNP_128QW;
1909                 jme_restart_rx_engine(jme);
1910         }
1911
1912         if(new_mtu > 1900) {
1913                 netdev->features &= ~(NETIF_F_HW_CSUM |
1914                                 NETIF_F_TSO |
1915                                 NETIF_F_TSO6);
1916         }
1917         else {
1918                 if(jme->flags & JME_FLAG_TXCSUM)
1919                         netdev->features |= NETIF_F_HW_CSUM;
1920                 if(jme->flags & JME_FLAG_TSO)
1921                         netdev->features |= NETIF_F_TSO | NETIF_F_TSO6;
1922         }
1923
1924         netdev->mtu = new_mtu;
1925         jme_reset_link(jme);
1926
1927         return 0;
1928 }
1929
1930 static void
1931 jme_tx_timeout(struct net_device *netdev)
1932 {
1933         struct jme_adapter *jme = netdev_priv(netdev);
1934
1935         /*
1936          * Reset the link
1937          * And the link change will reinitialize all RX/TX resources
1938          */
1939         jme->phylink = 0;
1940         jme_reset_link(jme);
1941 }
1942
1943 static void
1944 jme_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp)
1945 {
1946         struct jme_adapter *jme = netdev_priv(netdev);
1947
1948         jme->vlgrp = grp;
1949 }
1950
1951 static void
1952 jme_get_drvinfo(struct net_device *netdev,
1953                      struct ethtool_drvinfo *info)
1954 {
1955         struct jme_adapter *jme = netdev_priv(netdev);
1956
1957         strcpy(info->driver, DRV_NAME);
1958         strcpy(info->version, DRV_VERSION);
1959         strcpy(info->bus_info, pci_name(jme->pdev));
1960 }
1961
1962 static int
1963 jme_get_regs_len(struct net_device *netdev)
1964 {
1965         return 0x400;
1966 }
1967
1968 static void
1969 mmapio_memcpy(struct jme_adapter *jme, __u32 *p, __u32 reg, int len)
1970 {
1971         int i;
1972
1973         for(i = 0 ; i < len ; i += 4)
1974                 p[i >> 2] = jread32(jme, reg + i);
1975
1976 }
1977
1978 static void
1979 jme_get_regs(struct net_device *netdev, struct ethtool_regs *regs, void *p)
1980 {
1981         struct jme_adapter *jme = netdev_priv(netdev);
1982         __u32 *p32 = (__u32*)p;
1983
1984         memset(p, 0, 0x400);
1985
1986         regs->version = 1;
1987         mmapio_memcpy(jme, p32, JME_MAC, JME_MAC_LEN);
1988
1989         p32 += 0x100 >> 2;
1990         mmapio_memcpy(jme, p32, JME_PHY, JME_PHY_LEN);
1991
1992         p32 += 0x100 >> 2;
1993         mmapio_memcpy(jme, p32, JME_MISC, JME_MISC_LEN);
1994
1995         p32 += 0x100 >> 2;
1996         mmapio_memcpy(jme, p32, JME_RSS, JME_RSS_LEN);
1997
1998 }
1999
2000 static int
2001 jme_get_coalesce(struct net_device *netdev, struct ethtool_coalesce *ecmd)
2002 {
2003         struct jme_adapter *jme = netdev_priv(netdev);
2004
2005         if(jme->flags & JME_FLAG_POLL)
2006                 ecmd->use_adaptive_rx_coalesce = false;
2007         else
2008                 ecmd->use_adaptive_rx_coalesce = true;
2009
2010         ecmd->tx_coalesce_usecs = PCC_TX_TO;
2011         ecmd->tx_max_coalesced_frames = PCC_TX_CNT;
2012
2013         switch(jme->dpi.cur) {
2014         case PCC_P1:
2015                 ecmd->rx_coalesce_usecs = PCC_P1_TO;
2016                 ecmd->rx_max_coalesced_frames = PCC_P1_CNT;
2017                 break;
2018         case PCC_P2:
2019                 ecmd->rx_coalesce_usecs = PCC_P2_TO;
2020                 ecmd->rx_max_coalesced_frames = PCC_P2_CNT;
2021                 break;
2022         case PCC_P3:
2023                 ecmd->rx_coalesce_usecs = PCC_P3_TO;
2024                 ecmd->rx_max_coalesced_frames = PCC_P3_CNT;
2025                 break;
2026         default:
2027                 break;
2028         }
2029
2030         return 0;
2031 }
2032
2033 static int
2034 jme_set_coalesce(struct net_device *netdev, struct ethtool_coalesce *ecmd)
2035 {
2036         struct jme_adapter *jme = netdev_priv(netdev);
2037         struct dynpcc_info *dpi = &(jme->dpi);
2038
2039         if(ecmd->use_adaptive_rx_coalesce
2040         && (jme->flags & JME_FLAG_POLL)) {
2041                 jme->flags &= ~JME_FLAG_POLL;
2042                 napi_disable(&jme->napi);
2043                 dpi->cur                = PCC_P1;
2044                 dpi->attempt            = PCC_P1;
2045                 dpi->cnt                = 0;
2046                 jme_set_rx_pcc(jme, PCC_P1);
2047                 jme_interrupt_mode(jme);
2048         }
2049         else if(!(ecmd->use_adaptive_rx_coalesce)
2050         && !(jme->flags & JME_FLAG_POLL)) {
2051                 jme->flags |= JME_FLAG_POLL;
2052                 napi_enable(&jme->napi);
2053                 jme_interrupt_mode(jme);
2054         }
2055
2056         return 0;
2057 }
2058
2059 static void
2060 jme_get_pauseparam(struct net_device *netdev,
2061                         struct ethtool_pauseparam *ecmd)
2062 {
2063         struct jme_adapter *jme = netdev_priv(netdev);
2064         unsigned long flags;
2065         __u32 val;
2066
2067         ecmd->tx_pause = (jme->reg_txpfc & TXPFC_PF_EN) != 0;
2068         ecmd->rx_pause = (jme->reg_rxmcs & RXMCS_FLOWCTRL) != 0;
2069
2070         spin_lock_irqsave(&jme->phy_lock, flags);
2071         val = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_ADVERTISE);
2072         spin_unlock_irqrestore(&jme->phy_lock, flags);
2073
2074         ecmd->autoneg =
2075                 (val & (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM)) != 0;
2076 }
2077
2078 static int
2079 jme_set_pauseparam(struct net_device *netdev,
2080                         struct ethtool_pauseparam *ecmd)
2081 {
2082         struct jme_adapter *jme = netdev_priv(netdev);
2083         unsigned long flags;
2084         __u32 val;
2085
2086         if( ((jme->reg_txpfc & TXPFC_PF_EN) != 0) !=
2087                 (ecmd->tx_pause != 0)) {
2088
2089                 if(ecmd->tx_pause)
2090                         jme->reg_txpfc |= TXPFC_PF_EN;
2091                 else
2092                         jme->reg_txpfc &= ~TXPFC_PF_EN;
2093
2094                 jwrite32(jme, JME_TXPFC, jme->reg_txpfc);
2095         }
2096
2097         spin_lock_irqsave(&jme->rxmcs_lock, flags);
2098         if( ((jme->reg_rxmcs & RXMCS_FLOWCTRL) != 0) !=
2099                 (ecmd->rx_pause != 0)) {
2100
2101                 if(ecmd->rx_pause)
2102                         jme->reg_rxmcs |= RXMCS_FLOWCTRL;
2103                 else
2104                         jme->reg_rxmcs &= ~RXMCS_FLOWCTRL;
2105
2106                 jwrite32(jme, JME_RXMCS, jme->reg_rxmcs);
2107         }
2108         spin_unlock_irqrestore(&jme->rxmcs_lock, flags);
2109
2110         spin_lock_irqsave(&jme->phy_lock, flags);
2111         val = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_ADVERTISE);
2112         if( ((val & (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM)) != 0) !=
2113                 (ecmd->autoneg != 0)) {
2114
2115                 if(ecmd->autoneg)
2116                         val |= (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
2117                 else
2118                         val &= ~(ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
2119
2120                 jme_mdio_write(jme->dev, jme->mii_if.phy_id,
2121                                 MII_ADVERTISE, val);
2122         }
2123         spin_unlock_irqrestore(&jme->phy_lock, flags);
2124
2125         return 0;
2126 }
2127
2128 static void
2129 jme_get_wol(struct net_device *netdev,
2130                 struct ethtool_wolinfo *wol)
2131 {
2132         struct jme_adapter *jme = netdev_priv(netdev);
2133
2134         wol->supported = WAKE_MAGIC | WAKE_PHY;
2135
2136         wol->wolopts = 0;
2137
2138         if(jme->reg_pmcs & (PMCS_LFEN | PMCS_LREN))
2139                 wol->wolopts |= WAKE_PHY;
2140
2141         if(jme->reg_pmcs & PMCS_MFEN)
2142                 wol->wolopts |= WAKE_MAGIC;
2143
2144 }
2145
2146 static int
2147 jme_set_wol(struct net_device *netdev,
2148                 struct ethtool_wolinfo *wol)
2149 {
2150         struct jme_adapter *jme = netdev_priv(netdev);
2151
2152         if(wol->wolopts & (WAKE_MAGICSECURE |
2153                                 WAKE_UCAST |
2154                                 WAKE_MCAST |
2155                                 WAKE_BCAST |
2156                                 WAKE_ARP))
2157                 return -EOPNOTSUPP;
2158
2159         jme->reg_pmcs = 0;
2160
2161         if(wol->wolopts & WAKE_PHY)
2162                 jme->reg_pmcs |= PMCS_LFEN | PMCS_LREN;
2163
2164         if(wol->wolopts & WAKE_MAGIC)
2165                 jme->reg_pmcs |= PMCS_MFEN;
2166
2167
2168         return 0;
2169 }
2170
2171 static int
2172 jme_get_settings(struct net_device *netdev,
2173                      struct ethtool_cmd *ecmd)
2174 {
2175         struct jme_adapter *jme = netdev_priv(netdev);
2176         int rc;
2177         unsigned long flags;
2178
2179         spin_lock_irqsave(&jme->phy_lock, flags);
2180         rc = mii_ethtool_gset(&(jme->mii_if), ecmd);
2181         spin_unlock_irqrestore(&jme->phy_lock, flags);
2182         return rc;
2183 }
2184
2185 static int
2186 jme_set_settings(struct net_device *netdev,
2187                      struct ethtool_cmd *ecmd)
2188 {
2189         struct jme_adapter *jme = netdev_priv(netdev);
2190         int rc, fdc=0;
2191         unsigned long flags;
2192
2193         if(ecmd->speed == SPEED_1000 && ecmd->autoneg != AUTONEG_ENABLE)
2194                 return -EINVAL;
2195
2196         if(jme->mii_if.force_media &&
2197         ecmd->autoneg != AUTONEG_ENABLE &&
2198         (jme->mii_if.full_duplex != ecmd->duplex))
2199                 fdc = 1;
2200
2201         spin_lock_irqsave(&jme->phy_lock, flags);
2202         rc = mii_ethtool_sset(&(jme->mii_if), ecmd);
2203         spin_unlock_irqrestore(&jme->phy_lock, flags);
2204
2205         if(!rc && fdc)
2206                 jme_reset_link(jme);
2207
2208         if(!rc) {
2209                 jme->flags |= JME_FLAG_SSET;
2210                 jme->old_ecmd = *ecmd;
2211         }
2212
2213         return rc;
2214 }
2215
2216 static __u32
2217 jme_get_link(struct net_device *netdev)
2218 {
2219         struct jme_adapter *jme = netdev_priv(netdev);
2220         return jread32(jme, JME_PHY_LINK) & PHY_LINK_UP;
2221 }
2222
2223 static u32
2224 jme_get_rx_csum(struct net_device *netdev)
2225 {
2226         struct jme_adapter *jme = netdev_priv(netdev);
2227
2228         return jme->reg_rxmcs & RXMCS_CHECKSUM;
2229 }
2230
2231 static int
2232 jme_set_rx_csum(struct net_device *netdev, u32 on)
2233 {
2234         struct jme_adapter *jme = netdev_priv(netdev);
2235         unsigned long flags;
2236
2237         spin_lock_irqsave(&jme->rxmcs_lock, flags);
2238         if(on)
2239                 jme->reg_rxmcs |= RXMCS_CHECKSUM;
2240         else
2241                 jme->reg_rxmcs &= ~RXMCS_CHECKSUM;
2242         jwrite32(jme, JME_RXMCS, jme->reg_rxmcs);
2243         spin_unlock_irqrestore(&jme->rxmcs_lock, flags);
2244
2245         return 0;
2246 }
2247
2248 static int
2249 jme_set_tx_csum(struct net_device *netdev, u32 on)
2250 {
2251         struct jme_adapter *jme = netdev_priv(netdev);
2252
2253         if(on) {
2254                 jme->flags |= JME_FLAG_TXCSUM;
2255                 if(netdev->mtu <= 1900)
2256                         netdev->features |= NETIF_F_HW_CSUM;
2257         }
2258         else {
2259                 jme->flags &= ~JME_FLAG_TXCSUM;
2260                 netdev->features &= ~NETIF_F_HW_CSUM;
2261         }
2262
2263         return 0;
2264 }
2265
2266 static int
2267 jme_set_tso(struct net_device *netdev, u32 on)
2268 {
2269         struct jme_adapter *jme = netdev_priv(netdev);
2270
2271         if (on) {
2272                 jme->flags |= JME_FLAG_TSO;
2273                 if(netdev->mtu <= 1900)
2274                         netdev->features |= NETIF_F_TSO | NETIF_F_TSO6;
2275         }
2276         else {
2277                 jme->flags &= ~JME_FLAG_TSO;
2278                 netdev->features &= ~(NETIF_F_TSO | NETIF_F_TSO6);
2279         }
2280
2281         return 0;
2282 }
2283
2284 static int
2285 jme_nway_reset(struct net_device *netdev)
2286 {
2287         struct jme_adapter *jme = netdev_priv(netdev);
2288         jme_restart_an(jme);
2289         return 0;
2290 }
2291
2292 static const struct ethtool_ops jme_ethtool_ops = {
2293         .get_drvinfo            = jme_get_drvinfo,
2294         .get_regs_len           = jme_get_regs_len,
2295         .get_regs               = jme_get_regs,
2296         .get_coalesce           = jme_get_coalesce,
2297         .set_coalesce           = jme_set_coalesce,
2298         .get_pauseparam         = jme_get_pauseparam,
2299         .set_pauseparam         = jme_set_pauseparam,
2300         .get_wol                = jme_get_wol,
2301         .set_wol                = jme_set_wol,
2302         .get_settings           = jme_get_settings,
2303         .set_settings           = jme_set_settings,
2304         .get_link               = jme_get_link,
2305         .get_rx_csum            = jme_get_rx_csum,
2306         .set_rx_csum            = jme_set_rx_csum,
2307         .set_tx_csum            = jme_set_tx_csum,
2308         .set_tso                = jme_set_tso,
2309         .set_sg                 = ethtool_op_set_sg,
2310         .nway_reset             = jme_nway_reset,
2311 };
2312
2313 static int
2314 jme_pci_dma64(struct pci_dev *pdev)
2315 {
2316         if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK))
2317                 if(!pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK)) {
2318                         dprintk("jme", "64Bit DMA Selected.\n");
2319                         return 1;
2320                 }
2321
2322         if (!pci_set_dma_mask(pdev, DMA_40BIT_MASK))
2323                 if(!pci_set_consistent_dma_mask(pdev, DMA_40BIT_MASK)) {
2324                         dprintk("jme", "40Bit DMA Selected.\n");
2325                         return 1;
2326                 }
2327
2328         if (!pci_set_dma_mask(pdev, DMA_32BIT_MASK))
2329                 if(!pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK)) {
2330                         dprintk("jme", "32Bit DMA Selected.\n");
2331                         return 0;
2332                 }
2333
2334         return -1;
2335 }
2336
2337 __always_inline static void
2338 jme_set_phy_ps(struct jme_adapter *jme)
2339 {
2340         jme_mdio_write(jme->dev, jme->mii_if.phy_id, 26, 0x00001000);
2341 }
2342
2343 static int __devinit
2344 jme_init_one(struct pci_dev *pdev,
2345              const struct pci_device_id *ent)
2346 {
2347         int rc = 0, using_dac;
2348         struct net_device *netdev;
2349         struct jme_adapter *jme;
2350
2351         /*
2352          * set up PCI device basics
2353          */
2354         rc = pci_enable_device(pdev);
2355         if(rc) {
2356                 printk(KERN_ERR PFX "Cannot enable PCI device.\n");
2357                 goto err_out;
2358         }
2359
2360         using_dac = jme_pci_dma64(pdev);
2361         if(using_dac < 0) {
2362                 printk(KERN_ERR PFX "Cannot set PCI DMA Mask.\n");
2363                 rc = -EIO;
2364                 goto err_out_disable_pdev;
2365         }
2366
2367         if(!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
2368                 printk(KERN_ERR PFX "No PCI resource region found.\n");
2369                 rc = -ENOMEM;
2370                 goto err_out_disable_pdev;
2371         }
2372
2373         rc = pci_request_regions(pdev, DRV_NAME);
2374         if(rc) {
2375                 printk(KERN_ERR PFX "Cannot obtain PCI resource region.\n");
2376                 goto err_out_disable_pdev;
2377         }
2378
2379         pci_set_master(pdev);
2380
2381         /*
2382          * alloc and init net device
2383          */
2384         netdev = alloc_etherdev(sizeof(*jme));
2385         if(!netdev) {
2386                 printk(KERN_ERR PFX "Cannot allocate netdev structure.\n");
2387                 rc = -ENOMEM;
2388                 goto err_out_release_regions;
2389         }
2390         netdev->open                    = jme_open;
2391         netdev->stop                    = jme_close;
2392         netdev->hard_start_xmit         = jme_start_xmit;
2393         netdev->set_mac_address         = jme_set_macaddr;
2394         netdev->set_multicast_list      = jme_set_multi;
2395         netdev->change_mtu              = jme_change_mtu;
2396         netdev->ethtool_ops             = &jme_ethtool_ops;
2397         netdev->tx_timeout              = jme_tx_timeout;
2398         netdev->watchdog_timeo          = TX_TIMEOUT;
2399         netdev->vlan_rx_register        = jme_vlan_rx_register;
2400         NETDEV_GET_STATS(netdev, &jme_get_stats);
2401         netdev->features                =       NETIF_F_HW_CSUM |
2402                                                 NETIF_F_SG |
2403                                                 NETIF_F_TSO |
2404                                                 NETIF_F_TSO6 |
2405                                                 NETIF_F_HW_VLAN_TX |
2406                                                 NETIF_F_HW_VLAN_RX;
2407         if(using_dac)
2408                 netdev->features        |=      NETIF_F_HIGHDMA;
2409
2410         SET_NETDEV_DEV(netdev, &pdev->dev);
2411         pci_set_drvdata(pdev, netdev);
2412
2413         /*
2414          * init adapter info
2415          */
2416         jme = netdev_priv(netdev);
2417         jme->pdev = pdev;
2418         jme->dev = netdev;
2419         jme->old_mtu = netdev->mtu = 1500;
2420         jme->phylink = 0;
2421         jme->tx_ring_size = 1 << 10;
2422         jme->tx_ring_mask = jme->tx_ring_size - 1;
2423         jme->tx_wake_threshold = 1 << 9;
2424         jme->rx_ring_size = 1 << 9;
2425         jme->rx_ring_mask = jme->rx_ring_size - 1;
2426         jme->regs = ioremap(pci_resource_start(pdev, 0),
2427                              pci_resource_len(pdev, 0));
2428         if (!(jme->regs)) {
2429                 printk(KERN_ERR PFX "Mapping PCI resource region error.\n");
2430                 rc = -ENOMEM;
2431                 goto err_out_free_netdev;
2432         }
2433         jme->shadow_regs = pci_alloc_consistent(pdev,
2434                                                 sizeof(__u32) * SHADOW_REG_NR,
2435                                                 &(jme->shadow_dma));
2436         if (!(jme->shadow_regs)) {
2437                 printk(KERN_ERR PFX "Allocating shadow register mapping error.\n");
2438                 rc = -ENOMEM;
2439                 goto err_out_unmap;
2440         }
2441
2442         netif_napi_add(netdev, &jme->napi, jme_poll, jme->rx_ring_size >> 2);
2443
2444         spin_lock_init(&jme->phy_lock);
2445         spin_lock_init(&jme->macaddr_lock);
2446         spin_lock_init(&jme->rxmcs_lock);
2447
2448         atomic_set(&jme->link_changing, 1);
2449         atomic_set(&jme->rx_cleaning, 1);
2450         atomic_set(&jme->tx_cleaning, 1);
2451         atomic_set(&jme->rx_empty, 1);
2452
2453         tasklet_init(&jme->pcc_task,
2454                      &jme_pcc_tasklet,
2455                      (unsigned long) jme);
2456         tasklet_init(&jme->linkch_task,
2457                      &jme_link_change_tasklet,
2458                      (unsigned long) jme);
2459         tasklet_init(&jme->txclean_task,
2460                      &jme_tx_clean_tasklet,
2461                      (unsigned long) jme);
2462         tasklet_init(&jme->rxclean_task,
2463                      &jme_rx_clean_tasklet,
2464                      (unsigned long) jme);
2465         tasklet_init(&jme->rxempty_task,
2466                      &jme_rx_empty_tasklet,
2467                      (unsigned long) jme);
2468         jme->mii_if.dev = netdev;
2469         jme->mii_if.phy_id = 1;
2470         jme->mii_if.supports_gmii = 1;
2471         jme->mii_if.mdio_read = jme_mdio_read;
2472         jme->mii_if.mdio_write = jme_mdio_write;
2473
2474         jme->dpi.cur = PCC_P1;
2475
2476         jme->reg_ghc = GHC_DPX | GHC_SPEED_1000M;
2477         jme->reg_rxcs = RXCS_DEFAULT;
2478         jme->reg_rxmcs = RXMCS_DEFAULT;
2479         jme->reg_txpfc = 0;
2480         jme->reg_pmcs = PMCS_LFEN | PMCS_LREN | PMCS_MFEN;
2481         jme->flags = JME_FLAG_TXCSUM | JME_FLAG_TSO | JME_FLAG_POLL;
2482
2483         /*
2484          * Get Max Read Req Size from PCI Config Space
2485          */
2486         pci_read_config_byte(pdev, PCI_CONF_DCSR_MRRS, &jme->mrrs);
2487         switch(jme->mrrs) {
2488                 case MRRS_128B:
2489                         jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_128B;
2490                         break;
2491                 case MRRS_256B:
2492                         jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_256B;
2493                         break;
2494                 default:
2495                         jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_512B;
2496                         break;
2497         };
2498
2499
2500         /*
2501          * Reset MAC processor and reload EEPROM for MAC Address
2502          */
2503         jme_clear_pm(jme);
2504         jme_set_phy_ps(jme);
2505         jme_phy_off(jme);
2506         jme_reset_mac_processor(jme);
2507         rc = jme_reload_eeprom(jme);
2508         if(rc) {
2509                 printk(KERN_ERR PFX
2510                         "Reload eeprom for reading MAC Address error.\n");
2511                 goto err_out_free_shadow;
2512         }
2513         jme_load_macaddr(netdev);
2514
2515
2516         /*
2517          * Tell stack that we are not ready to work until open()
2518          */
2519         netif_carrier_off(netdev);
2520         netif_stop_queue(netdev);
2521
2522         /*
2523          * Register netdev
2524          */
2525         rc = register_netdev(netdev);
2526         if(rc) {
2527                 printk(KERN_ERR PFX "Cannot register net device.\n");
2528                 goto err_out_free_shadow;
2529         }
2530
2531         jprintk(netdev->name,
2532                 "JMC250 gigabit eth %02x:%02x:%02x:%02x:%02x:%02x\n",
2533                 netdev->dev_addr[0],
2534                 netdev->dev_addr[1],
2535                 netdev->dev_addr[2],
2536                 netdev->dev_addr[3],
2537                 netdev->dev_addr[4],
2538                 netdev->dev_addr[5]);
2539
2540         return 0;
2541
2542 err_out_free_shadow:
2543         pci_free_consistent(pdev,
2544                             sizeof(__u32) * SHADOW_REG_NR,
2545                             jme->shadow_regs,
2546                             jme->shadow_dma);
2547 err_out_unmap:
2548         iounmap(jme->regs);
2549 err_out_free_netdev:
2550         pci_set_drvdata(pdev, NULL);
2551         free_netdev(netdev);
2552 err_out_release_regions:
2553         pci_release_regions(pdev);
2554 err_out_disable_pdev:
2555         pci_disable_device(pdev);
2556 err_out:
2557         return rc;
2558 }
2559
2560 static void __devexit
2561 jme_remove_one(struct pci_dev *pdev)
2562 {
2563         struct net_device *netdev = pci_get_drvdata(pdev);
2564         struct jme_adapter *jme = netdev_priv(netdev);
2565
2566         unregister_netdev(netdev);
2567         pci_free_consistent(pdev,
2568                             sizeof(__u32) * SHADOW_REG_NR,
2569                             jme->shadow_regs,
2570                             jme->shadow_dma);
2571         iounmap(jme->regs);
2572         pci_set_drvdata(pdev, NULL);
2573         free_netdev(netdev);
2574         pci_release_regions(pdev);
2575         pci_disable_device(pdev);
2576
2577 }
2578
2579 static int
2580 jme_suspend(struct pci_dev *pdev, pm_message_t state)
2581 {
2582         struct net_device *netdev = pci_get_drvdata(pdev);
2583         struct jme_adapter *jme = netdev_priv(netdev);
2584         int timeout = 100;
2585
2586         atomic_dec(&jme->link_changing);
2587
2588         netif_device_detach(netdev);
2589         netif_stop_queue(netdev);
2590         jme_stop_irq(jme);
2591         jme_free_irq(jme);
2592
2593         while(--timeout > 0 &&
2594         (
2595                 atomic_read(&jme->rx_cleaning) != 1 ||
2596                 atomic_read(&jme->tx_cleaning) != 1
2597         )) {
2598                 mdelay(1);
2599         }
2600         if(!timeout) {
2601                 jeprintk(netdev->name, "Waiting tasklets timeout.\n");
2602                 return -EBUSY;
2603         }
2604         jme_disable_shadow(jme);
2605
2606         if(netif_carrier_ok(netdev)) {
2607                 jme_stop_pcc_timer(jme);
2608                 jme_reset_mac_processor(jme);
2609                 jme_free_rx_resources(jme);
2610                 jme_free_tx_resources(jme);
2611                 netif_carrier_off(netdev);
2612                 jme->phylink = 0;
2613
2614                 if(jme->flags & JME_FLAG_POLL) {
2615                         jme_polling_mode(jme);
2616                         napi_disable(&jme->napi);
2617                 }
2618         }
2619
2620
2621         pci_save_state(pdev);
2622         if(jme->reg_pmcs) {
2623                 jme_set_100m_half(jme);
2624                 jwrite32(jme, JME_PMCS, jme->reg_pmcs);
2625                 pci_enable_wake(pdev, PCI_D3hot, true);
2626                 pci_enable_wake(pdev, PCI_D3cold, true);
2627         }
2628         else {
2629                 jme_phy_off(jme);
2630                 pci_enable_wake(pdev, PCI_D3hot, false);
2631                 pci_enable_wake(pdev, PCI_D3cold, false);
2632         }
2633         pci_set_power_state(pdev, pci_choose_state(pdev, state));
2634
2635         return 0;
2636 }
2637
2638 static int
2639 jme_resume(struct pci_dev *pdev)
2640 {
2641         struct net_device *netdev = pci_get_drvdata(pdev);
2642         struct jme_adapter *jme = netdev_priv(netdev);
2643
2644         jme_clear_pm(jme);
2645         pci_restore_state(pdev);
2646
2647         if(jme->flags & JME_FLAG_SSET)
2648                 jme_set_settings(netdev, &jme->old_ecmd);
2649         else
2650                 jme_reset_phy_processor(jme);
2651
2652         jme_reset_mac_processor(jme);
2653         jme_enable_shadow(jme);
2654         jme_request_irq(jme);
2655         jme_start_irq(jme);
2656         netif_device_attach(netdev);
2657
2658         atomic_inc(&jme->link_changing);
2659
2660         jme_reset_link(jme);
2661
2662         return 0;
2663 }
2664
2665 static struct pci_device_id jme_pci_tbl[] = {
2666         { PCI_VDEVICE(JMICRON, 0x250) },
2667         { }
2668 };
2669
2670 static struct pci_driver jme_driver = {
2671         .name           = DRV_NAME,
2672         .id_table       = jme_pci_tbl,
2673         .probe          = jme_init_one,
2674         .remove         = __devexit_p(jme_remove_one),
2675 #ifdef CONFIG_PM
2676         .suspend        = jme_suspend,
2677         .resume         = jme_resume,
2678 #endif /* CONFIG_PM */
2679 };
2680
2681 static int __init
2682 jme_init_module(void)
2683 {
2684         printk(KERN_INFO PFX "JMicron JMC250 gigabit ethernet "
2685                "driver version %s\n", DRV_VERSION);
2686         return pci_register_driver(&jme_driver);
2687 }
2688
2689 static void __exit
2690 jme_cleanup_module(void)
2691 {
2692         pci_unregister_driver(&jme_driver);
2693 }
2694
2695 module_init(jme_init_module);
2696 module_exit(jme_cleanup_module);
2697
2698 MODULE_AUTHOR("Guo-Fu Tseng <cooldavid@cooldavid.org>");
2699 MODULE_DESCRIPTION("JMicron JMC2x0 PCI Express Ethernet driver");
2700 MODULE_LICENSE("GPL");
2701 MODULE_VERSION(DRV_VERSION);
2702 MODULE_DEVICE_TABLE(pci, jme_pci_tbl);
2703