jme.c

   1 /*
   2  * JMicron JMC2x0 series PCIe Ethernet Linux Device Driver
   3  *
   4  * Copyright 2008 JMicron Technology Corporation
   5  * http://www.jmicron.com/
   6  *
   7  * Author: Guo-Fu Tseng <cooldavid@cooldavid.org>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21  *
  22  */
  23
  24 #include <linux/version.h>
  25 #include <linux/module.h>
  26 #include <linux/kernel.h>
  27 #include <linux/pci.h>
  28 #include <linux/netdevice.h>
  29 #include <linux/etherdevice.h>
  30 #include <linux/ethtool.h>
  31 #include <linux/mii.h>
  32 #include <linux/crc32.h>
  33 #include <linux/delay.h>
  34 #include <linux/spinlock.h>
  35 #include <linux/in.h>
  36 #include <linux/ip.h>
  37 #include <linux/ipv6.h>
  38 #include <linux/tcp.h>
  39 #include <linux/udp.h>
  40 #include <linux/if_vlan.h>
  41 #include <linux/slab.h>
  42 #include <net/ip6_checksum.h>
  43 #include "jme.h"
  44
  45 static int force_pseudohp = -1;
  46 static int no_pseudohp = -1;
  47 static int no_extplug = -1;
  48 module_param(force_pseudohp, int, 0);
  49 MODULE_PARM_DESC(force_pseudohp,
  50         "Enable pseudo hot-plug feature manually by driver instead of BIOS.");
  51 module_param(no_pseudohp, int, 0);
  52 MODULE_PARM_DESC(no_pseudohp, "Disable pseudo hot-plug feature.");
  53 module_param(no_extplug, int, 0);
  54 MODULE_PARM_DESC(no_extplug,
  55         "Do not use external plug signal for pseudo hot-plug.");
  56
  57 static int
  58 jme_mdio_read(struct net_device *netdev, int phy, int reg)
  59 {
  60         struct jme_adapter *jme = netdev_priv(netdev);
  61         int i, val, again = (reg == MII_BMSR) ? 1 : 0;
  62
  63 read_again:
  64         jwrite32(jme, JME_SMI, SMI_OP_REQ |
  65                                 smi_phy_addr(phy) |
  66                                 smi_reg_addr(reg));
  67
  68         wmb();
  69         for (i = JME_PHY_TIMEOUT * 50 ; i > 0 ; --i) {
  70                 udelay(20);
  71                 val = jread32(jme, JME_SMI);
  72                 if ((val & SMI_OP_REQ) == 0)
  73                         break;
  74         }
  75
  76         if (i == 0) {
  77                 jeprintk(jme->pdev, "phy(%d) read timeout : %d\n", phy, reg);
  78                 return 0;
  79         }
  80
  81         if (again--)
  82                 goto read_again;
  83
  84         return (val & SMI_DATA_MASK) >> SMI_DATA_SHIFT;
  85 }
  86
  87 static void
  88 jme_mdio_write(struct net_device *netdev,
  89                                 int phy, int reg, int val)
  90 {
  91         struct jme_adapter *jme = netdev_priv(netdev);
  92         int i;
  93
  94         jwrite32(jme, JME_SMI, SMI_OP_WRITE | SMI_OP_REQ |
  95                 ((val << SMI_DATA_SHIFT) & SMI_DATA_MASK) |
  96                 smi_phy_addr(phy) | smi_reg_addr(reg));
  97
  98         wmb();
  99         for (i = JME_PHY_TIMEOUT * 50 ; i > 0 ; --i) {
 100                 udelay(20);
 101                 if ((jread32(jme, JME_SMI) & SMI_OP_REQ) == 0)
 102                         break;
 103         }
 104
 105         if (i == 0)
 106                 jeprintk(jme->pdev, "phy(%d) write timeout : %d\n", phy, reg);
 107 }
 108
 109 static inline void
 110 jme_reset_phy_processor(struct jme_adapter *jme)
 111 {
 112         u32 val;
 113
 114         jme_mdio_write(jme->dev,
 115                         jme->mii_if.phy_id,
 116                         MII_ADVERTISE, ADVERTISE_ALL |
 117                         ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
 118
 119         if (jme->pdev->device == PCI_DEVICE_ID_JMICRON_JMC250)
 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
 134 static void
 135 jme_setup_wakeup_frame(struct jme_adapter *jme,
 136                 u32 *mask, u32 crc, int fnr)
 137 {
 138         int i;
 139
 140         /*
 141          * Setup CRC pattern
 142          */
 143         jwrite32(jme, JME_WFOI, WFOI_CRC_SEL | (fnr & WFOI_FRAME_SEL));
 144         wmb();
 145         jwrite32(jme, JME_WFODP, crc);
 146         wmb();
 147
 148         /*
 149          * Setup Mask
 150          */
 151         for (i = 0 ; i < WAKEUP_FRAME_MASK_DWNR ; ++i) {
 152                 jwrite32(jme, JME_WFOI,
 153                                 ((i << WFOI_MASK_SHIFT) & WFOI_MASK_SEL) |
 154                                 (fnr & WFOI_FRAME_SEL));
 155                 wmb();
 156                 jwrite32(jme, JME_WFODP, mask[i]);
 157                 wmb();
 158         }
 159 }
 160
 161 static inline void
 162 jme_reset_mac_processor(struct jme_adapter *jme)
 163 {
 164         u32 mask[WAKEUP_FRAME_MASK_DWNR] = {0, 0, 0, 0};
 165         u32 crc = 0xCDCDCDCD;
 166         u32 gpreg0;
 167         int i;
 168
 169         jwrite32(jme, JME_GHC, jme->reg_ghc | GHC_SWRST);
 170         udelay(2);
 171         jwrite32(jme, JME_GHC, jme->reg_ghc);
 172
 173         jwrite32(jme, JME_RXDBA_LO, 0x00000000);
 174         jwrite32(jme, JME_RXDBA_HI, 0x00000000);
 175         jwrite32(jme, JME_RXQDC, 0x00000000);
 176         jwrite32(jme, JME_RXNDA, 0x00000000);
 177         jwrite32(jme, JME_TXDBA_LO, 0x00000000);
 178         jwrite32(jme, JME_TXDBA_HI, 0x00000000);
 179         jwrite32(jme, JME_TXQDC, 0x00000000);
 180         jwrite32(jme, JME_TXNDA, 0x00000000);
 181
 182         jwrite32(jme, JME_RXMCHT_LO, 0x00000000);
 183         jwrite32(jme, JME_RXMCHT_HI, 0x00000000);
 184         for (i = 0 ; i < WAKEUP_FRAME_NR ; ++i)
 185                 jme_setup_wakeup_frame(jme, mask, crc, i);
 186         if (jme->fpgaver)
 187                 gpreg0 = GPREG0_DEFAULT | GPREG0_LNKINTPOLL;
 188         else
 189                 gpreg0 = GPREG0_DEFAULT;
 190         jwrite32(jme, JME_GPREG0, gpreg0);
 191         jwrite32(jme, JME_GPREG1, GPREG1_DEFAULT);
 192 }
 193
 194 static inline void
 195 jme_reset_ghc_speed(struct jme_adapter *jme)
 196 {
 197         jme->reg_ghc &= ~(GHC_SPEED_1000M | GHC_DPX);
 198         jwrite32(jme, JME_GHC, jme->reg_ghc);
 199 }
 200
 201 static inline void
 202 jme_clear_pm(struct jme_adapter *jme)
 203 {
 204         jwrite32(jme, JME_PMCS, 0xFFFF0000 | jme->reg_pmcs);
 205         pci_set_power_state(jme->pdev, PCI_D0);
 206         pci_enable_wake(jme->pdev, PCI_D0, false);
 207 }
 208
 209 static int
 210 jme_reload_eeprom(struct jme_adapter *jme)
 211 {
 212         u32 val;
 213         int i;
 214
 215         val = jread32(jme, JME_SMBCSR);
 216
 217         if (val & SMBCSR_EEPROMD) {
 218                 val |= SMBCSR_CNACK;
 219                 jwrite32(jme, JME_SMBCSR, val);
 220                 val |= SMBCSR_RELOAD;
 221                 jwrite32(jme, JME_SMBCSR, val);
 222                 mdelay(12);
 223
 224                 for (i = JME_EEPROM_RELOAD_TIMEOUT; i > 0; --i) {
 225                         mdelay(1);
 226                         if ((jread32(jme, JME_SMBCSR) & SMBCSR_RELOAD) == 0)
 227                                 break;
 228                 }
 229
 230                 if (i == 0) {
 231                         jeprintk(jme->pdev, "eeprom reload timeout\n");
 232                         return -EIO;
 233                 }
 234         }
 235
 236         return 0;
 237 }
 238
 239 static void
 240 jme_load_macaddr(struct net_device *netdev)
 241 {
 242         struct jme_adapter *jme = netdev_priv(netdev);
 243         unsigned char macaddr[6];
 244         u32 val;
 245
 246         spin_lock_bh(&jme->macaddr_lock);
 247         val = jread32(jme, JME_RXUMA_LO);
 248         macaddr[0] = (val >>  0) & 0xFF;
 249         macaddr[1] = (val >>  8) & 0xFF;
 250         macaddr[2] = (val >> 16) & 0xFF;
 251         macaddr[3] = (val >> 24) & 0xFF;
 252         val = jread32(jme, JME_RXUMA_HI);
 253         macaddr[4] = (val >>  0) & 0xFF;
 254         macaddr[5] = (val >>  8) & 0xFF;
 255         memcpy(netdev->dev_addr, macaddr, 6);
 256         spin_unlock_bh(&jme->macaddr_lock);
 257 }
 258
 259 static inline void
 260 jme_set_rx_pcc(struct jme_adapter *jme, int p)
 261 {
 262         switch (p) {
 263         case PCC_OFF:
 264                 jwrite32(jme, JME_PCCRX0,
 265                         ((PCC_OFF_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
 266                         ((PCC_OFF_CNT << PCCRX_SHIFT) & PCCRX_MASK));
 267                 break;
 268         case PCC_P1:
 269                 jwrite32(jme, JME_PCCRX0,
 270                         ((PCC_P1_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
 271                         ((PCC_P1_CNT << PCCRX_SHIFT) & PCCRX_MASK));
 272                 break;
 273         case PCC_P2:
 274                 jwrite32(jme, JME_PCCRX0,
 275                         ((PCC_P2_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
 276                         ((PCC_P2_CNT << PCCRX_SHIFT) & PCCRX_MASK));
 277                 break;
 278         case PCC_P3:
 279                 jwrite32(jme, JME_PCCRX0,
 280                         ((PCC_P3_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
 281                         ((PCC_P3_CNT << PCCRX_SHIFT) & PCCRX_MASK));
 282                 break;
 283         default:
 284                 break;
 285         }
 286         wmb();
 287
 288         if (!(test_bit(JME_FLAG_POLL, &jme->flags)))
 289 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,33)
 290                 msg_rx_status(jme, "Switched to PCC_P%d\n", p);
 291 #else
 292                 netif_info(jme, rx_status, jme->dev, "Switched to PCC_P%d\n", p);
 293 #endif
 294 }
 295
 296 static void
 297 jme_start_irq(struct jme_adapter *jme)
 298 {
 299         register struct dynpcc_info *dpi = &(jme->dpi);
 300
 301         jme_set_rx_pcc(jme, PCC_P1);
 302         dpi->cur                = PCC_P1;
 303         dpi->attempt            = PCC_P1;
 304         dpi->cnt                = 0;
 305
 306         jwrite32(jme, JME_PCCTX,
 307                         ((PCC_TX_TO << PCCTXTO_SHIFT) & PCCTXTO_MASK) |
 308                         ((PCC_TX_CNT << PCCTX_SHIFT) & PCCTX_MASK) |
 309                         PCCTXQ0_EN
 310                 );
 311
 312         /*
 313          * Enable Interrupts
 314          */
 315         jwrite32(jme, JME_IENS, INTR_ENABLE);
 316 }
 317
 318 static inline void
 319 jme_stop_irq(struct jme_adapter *jme)
 320 {
 321         /*
 322          * Disable Interrupts
 323          */
 324         jwrite32f(jme, JME_IENC, INTR_ENABLE);
 325 }
 326
 327 static u32
 328 jme_linkstat_from_phy(struct jme_adapter *jme)
 329 {
 330         u32 phylink, bmsr;
 331
 332         phylink = jme_mdio_read(jme->dev, jme->mii_if.phy_id, 17);
 333         bmsr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMSR);
 334         if (bmsr & BMSR_ANCOMP)
 335                 phylink |= PHY_LINK_AUTONEG_COMPLETE;
 336
 337         return phylink;
 338 }
 339
 340 static inline void
 341 jme_set_phyfifoa(struct jme_adapter *jme)
 342 {
 343         jme_mdio_write(jme->dev, jme->mii_if.phy_id, 27, 0x0004);
 344 }
 345
 346 static inline void
 347 jme_set_phyfifob(struct jme_adapter *jme)
 348 {
 349         jme_mdio_write(jme->dev, jme->mii_if.phy_id, 27, 0x0000);
 350 }
 351
 352 static int
 353 jme_check_link(struct net_device *netdev, int testonly)
 354 {
 355         struct jme_adapter *jme = netdev_priv(netdev);
 356         u32 phylink, ghc, cnt = JME_SPDRSV_TIMEOUT, bmcr, gpreg1;
 357         char linkmsg[64];
 358         int rc = 0;
 359
 360         linkmsg[0] = '\0';
 361
 362         if (jme->fpgaver)
 363                 phylink = jme_linkstat_from_phy(jme);
 364         else
 365                 phylink = jread32(jme, JME_PHY_LINK);
 366
 367         if (phylink & PHY_LINK_UP) {
 368                 if (!(phylink & PHY_LINK_AUTONEG_COMPLETE)) {
 369                         /*
 370                          * If we did not enable AN
 371                          * Speed/Duplex Info should be obtained from SMI
 372                          */
 373                         phylink = PHY_LINK_UP;
 374
 375                         bmcr = jme_mdio_read(jme->dev,
 376                                                 jme->mii_if.phy_id,
 377                                                 MII_BMCR);
 378
 379                         phylink |= ((bmcr & BMCR_SPEED1000) &&
 380                                         (bmcr & BMCR_SPEED100) == 0) ?
 381                                         PHY_LINK_SPEED_1000M :
 382                                         (bmcr & BMCR_SPEED100) ?
 383                                         PHY_LINK_SPEED_100M :
 384                                         PHY_LINK_SPEED_10M;
 385
 386                         phylink |= (bmcr & BMCR_FULLDPLX) ?
 387                                          PHY_LINK_DUPLEX : 0;
 388
 389                         strcat(linkmsg, "Forced: ");
 390                 } else {
 391                         /*
 392                          * Keep polling for speed/duplex resolve complete
 393                          */
 394                         while (!(phylink & PHY_LINK_SPEEDDPU_RESOLVED) &&
 395                                 --cnt) {
 396
 397                                 udelay(1);
 398
 399                                 if (jme->fpgaver)
 400                                         phylink = jme_linkstat_from_phy(jme);
 401                                 else
 402                                         phylink = jread32(jme, JME_PHY_LINK);
 403                         }
 404                         if (!cnt)
 405                                 jeprintk(jme->pdev,
 406                                         "Waiting speed resolve timeout.\n");
 407
 408                         strcat(linkmsg, "ANed: ");
 409                 }
 410
 411                 if (jme->phylink == phylink) {
 412                         rc = 1;
 413                         goto out;
 414                 }
 415                 if (testonly)
 416                         goto out;
 417
 418                 jme->phylink = phylink;
 419
 420                 ghc = jme->reg_ghc & ~(GHC_SPEED | GHC_DPX |
 421                                 GHC_TO_CLK_PCIE | GHC_TXMAC_CLK_PCIE |
 422                                 GHC_TO_CLK_GPHY | GHC_TXMAC_CLK_GPHY);
 423                 switch (phylink & PHY_LINK_SPEED_MASK) {
 424                 case PHY_LINK_SPEED_10M:
 425                         ghc |= GHC_SPEED_10M |
 426                                 GHC_TO_CLK_PCIE | GHC_TXMAC_CLK_PCIE;
 427                         strcat(linkmsg, "10 Mbps, ");
 428                         break;
 429                 case PHY_LINK_SPEED_100M:
 430                         ghc |= GHC_SPEED_100M |
 431                                 GHC_TO_CLK_PCIE | GHC_TXMAC_CLK_PCIE;
 432                         strcat(linkmsg, "100 Mbps, ");
 433                         break;
 434                 case PHY_LINK_SPEED_1000M:
 435                         ghc |= GHC_SPEED_1000M |
 436                                 GHC_TO_CLK_GPHY | GHC_TXMAC_CLK_GPHY;
 437                         strcat(linkmsg, "1000 Mbps, ");
 438                         break;
 439                 default:
 440                         break;
 441                 }
 442
 443                 if (phylink & PHY_LINK_DUPLEX) {
 444                         jwrite32(jme, JME_TXMCS, TXMCS_DEFAULT);
 445                         ghc |= GHC_DPX;
 446                 } else {
 447                         jwrite32(jme, JME_TXMCS, TXMCS_DEFAULT |
 448                                                 TXMCS_BACKOFF |
 449                                                 TXMCS_CARRIERSENSE |
 450                                                 TXMCS_COLLISION);
 451                         jwrite32(jme, JME_TXTRHD, TXTRHD_TXPEN |
 452                                 ((0x2000 << TXTRHD_TXP_SHIFT) & TXTRHD_TXP) |
 453                                 TXTRHD_TXREN |
 454                                 ((8 << TXTRHD_TXRL_SHIFT) & TXTRHD_TXRL));
 455                 }
 456
 457                 gpreg1 = GPREG1_DEFAULT;
 458                 if (is_buggy250(jme->pdev->device, jme->chiprev)) {
 459                         if (!(phylink & PHY_LINK_DUPLEX))
 460                                 gpreg1 |= GPREG1_HALFMODEPATCH;
 461                         switch (phylink & PHY_LINK_SPEED_MASK) {
 462                         case PHY_LINK_SPEED_10M:
 463                                 jme_set_phyfifoa(jme);
 464                                 gpreg1 |= GPREG1_RSSPATCH;
 465                                 break;
 466                         case PHY_LINK_SPEED_100M:
 467                                 jme_set_phyfifob(jme);
 468                                 gpreg1 |= GPREG1_RSSPATCH;
 469                                 break;
 470                         case PHY_LINK_SPEED_1000M:
 471                                 jme_set_phyfifoa(jme);
 472                                 break;
 473                         default:
 474                                 break;
 475                         }
 476                 }
 477
 478                 jwrite32(jme, JME_GPREG1, gpreg1);
 479                 jwrite32(jme, JME_GHC, ghc);
 480                 jme->reg_ghc = ghc;
 481
 482                 strcat(linkmsg, (phylink & PHY_LINK_DUPLEX) ?
 483                                         "Full-Duplex, " :
 484                                         "Half-Duplex, ");
 485                 strcat(linkmsg, (phylink & PHY_LINK_MDI_STAT) ?
 486                                         "MDI-X" :
 487                                         "MDI");
 488 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,33)
 489                 msg_link(jme, "Link is up at %s.\n", linkmsg);
 490 #else
 491                 netif_info(jme, link, jme->dev, "Link is up at %s.\n", linkmsg);
 492 #endif
 493                 netif_carrier_on(netdev);
 494         } else {
 495                 if (testonly)
 496                         goto out;
 497
 498 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,33)
 499                 msg_link(jme, "Link is down.\n");
 500 #else
 501                 netif_info(jme, link, jme->dev, "Link is down.\n");
 502 #endif
 503                 jme->phylink = 0;
 504                 netif_carrier_off(netdev);
 505         }
 506
 507 out:
 508         return rc;
 509 }
 510
 511 static int
 512 jme_setup_tx_resources(struct jme_adapter *jme)
 513 {
 514         struct jme_ring *txring = &(jme->txring[0]);
 515
 516         txring->alloc = dma_alloc_coherent(&(jme->pdev->dev),
 517                                    TX_RING_ALLOC_SIZE(jme->tx_ring_size),
 518                                    &(txring->dmaalloc),
 519                                    GFP_ATOMIC);
 520
 521         if (!txring->alloc)
 522                 goto err_set_null;
 523
 524         /*
 525          * 16 Bytes align
 526          */
 527         txring->desc            = (void *)ALIGN((unsigned long)(txring->alloc),
 528                                                 RING_DESC_ALIGN);
 529         txring->dma             = ALIGN(txring->dmaalloc, RING_DESC_ALIGN);
 530         txring->next_to_use     = 0;
 531         atomic_set(&txring->next_to_clean, 0);
 532         atomic_set(&txring->nr_free, jme->tx_ring_size);
 533
 534         txring->bufinf          = kmalloc(sizeof(struct jme_buffer_info) *
 535                                         jme->tx_ring_size, GFP_ATOMIC);
 536         if (unlikely(!(txring->bufinf)))
 537                 goto err_free_txring;
 538
 539         /*
 540          * Initialize Transmit Descriptors
 541          */
 542         memset(txring->alloc, 0, TX_RING_ALLOC_SIZE(jme->tx_ring_size));
 543         memset(txring->bufinf, 0,
 544                 sizeof(struct jme_buffer_info) * jme->tx_ring_size);
 545
 546         return 0;
 547
 548 err_free_txring:
 549         dma_free_coherent(&(jme->pdev->dev),
 550                           TX_RING_ALLOC_SIZE(jme->tx_ring_size),
 551                           txring->alloc,
 552                           txring->dmaalloc);
 553
 554 err_set_null:
 555         txring->desc = NULL;
 556         txring->dmaalloc = 0;
 557         txring->dma = 0;
 558         txring->bufinf = NULL;
 559
 560         return -ENOMEM;
 561 }
 562
 563 static void
 564 jme_free_tx_resources(struct jme_adapter *jme)
 565 {
 566         int i;
 567         struct jme_ring *txring = &(jme->txring[0]);
 568         struct jme_buffer_info *txbi;
 569
 570         if (txring->alloc) {
 571                 if (txring->bufinf) {
 572                         for (i = 0 ; i < jme->tx_ring_size ; ++i) {
 573                                 txbi = txring->bufinf + i;
 574                                 if (txbi->skb) {
 575                                         dev_kfree_skb(txbi->skb);
 576                                         txbi->skb = NULL;
 577                                 }
 578                                 txbi->mapping           = 0;
 579                                 txbi->len               = 0;
 580                                 txbi->nr_desc           = 0;
 581                                 txbi->start_xmit        = 0;
 582                         }
 583                         kfree(txring->bufinf);
 584                 }
 585
 586                 dma_free_coherent(&(jme->pdev->dev),
 587                                   TX_RING_ALLOC_SIZE(jme->tx_ring_size),
 588                                   txring->alloc,
 589                                   txring->dmaalloc);
 590
 591                 txring->alloc           = NULL;
 592                 txring->desc            = NULL;
 593                 txring->dmaalloc        = 0;
 594                 txring->dma             = 0;
 595                 txring->bufinf          = NULL;
 596         }
 597         txring->next_to_use     = 0;
 598         atomic_set(&txring->next_to_clean, 0);
 599         atomic_set(&txring->nr_free, 0);
 600 }
 601
 602 static inline void
 603 jme_enable_tx_engine(struct jme_adapter *jme)
 604 {
 605         /*
 606          * Select Queue 0
 607          */
 608         jwrite32(jme, JME_TXCS, TXCS_DEFAULT | TXCS_SELECT_QUEUE0);
 609         wmb();
 610
 611         /*
 612          * Setup TX Queue 0 DMA Bass Address
 613          */
 614         jwrite32(jme, JME_TXDBA_LO, (__u64)jme->txring[0].dma & 0xFFFFFFFFUL);
 615         jwrite32(jme, JME_TXDBA_HI, (__u64)(jme->txring[0].dma) >> 32);
 616         jwrite32(jme, JME_TXNDA, (__u64)jme->txring[0].dma & 0xFFFFFFFFUL);
 617
 618         /*
 619          * Setup TX Descptor Count
 620          */
 621         jwrite32(jme, JME_TXQDC, jme->tx_ring_size);
 622
 623         /*
 624          * Enable TX Engine
 625          */
 626         wmb();
 627         jwrite32(jme, JME_TXCS, jme->reg_txcs |
 628                                 TXCS_SELECT_QUEUE0 |
 629                                 TXCS_ENABLE);
 630
 631 }
 632
 633 static inline void
 634 jme_restart_tx_engine(struct jme_adapter *jme)
 635 {
 636         /*
 637          * Restart TX Engine
 638          */
 639         jwrite32(jme, JME_TXCS, jme->reg_txcs |
 640                                 TXCS_SELECT_QUEUE0 |
 641                                 TXCS_ENABLE);
 642 }
 643
 644 static inline void
 645 jme_disable_tx_engine(struct jme_adapter *jme)
 646 {
 647         int i;
 648         u32 val;
 649
 650         /*
 651          * Disable TX Engine
 652          */
 653         jwrite32(jme, JME_TXCS, jme->reg_txcs | TXCS_SELECT_QUEUE0);
 654         wmb();
 655
 656         val = jread32(jme, JME_TXCS);
 657         for (i = JME_TX_DISABLE_TIMEOUT ; (val & TXCS_ENABLE) && i > 0 ; --i) {
 658                 mdelay(1);
 659                 val = jread32(jme, JME_TXCS);
 660                 rmb();
 661         }
 662
 663         if (!i)
 664                 jeprintk(jme->pdev, "Disable TX engine timeout.\n");
 665 }
 666
 667 static void
 668 jme_set_clean_rxdesc(struct jme_adapter *jme, int i)
 669 {
 670         struct jme_ring *rxring = &(jme->rxring[0]);
 671         register struct rxdesc *rxdesc = rxring->desc;
 672         struct jme_buffer_info *rxbi = rxring->bufinf;
 673         rxdesc += i;
 674         rxbi += i;
 675
 676         rxdesc->dw[0] = 0;
 677         rxdesc->dw[1] = 0;
 678         rxdesc->desc1.bufaddrh  = cpu_to_le32((__u64)rxbi->mapping >> 32);
 679         rxdesc->desc1.bufaddrl  = cpu_to_le32(
 680                                         (__u64)rxbi->mapping & 0xFFFFFFFFUL);
 681         rxdesc->desc1.datalen   = cpu_to_le16(rxbi->len);
 682         if (jme->dev->features & NETIF_F_HIGHDMA)
 683                 rxdesc->desc1.flags = RXFLAG_64BIT;
 684         wmb();
 685         rxdesc->desc1.flags     |= RXFLAG_OWN | RXFLAG_INT;
 686 }
 687
 688 static int
 689 jme_make_new_rx_buf(struct jme_adapter *jme, int i)
 690 {
 691         struct jme_ring *rxring = &(jme->rxring[0]);
 692         struct jme_buffer_info *rxbi = rxring->bufinf + i;
 693         struct sk_buff *skb;
 694
 695         skb = netdev_alloc_skb(jme->dev,
 696                 jme->dev->mtu + RX_EXTRA_LEN);
 697         if (unlikely(!skb))
 698                 return -ENOMEM;
 699 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)
 700         skb->dev = jme->dev;
 701 #endif
 702
 703         rxbi->skb = skb;
 704         rxbi->len = skb_tailroom(skb);
 705         rxbi->mapping = pci_map_page(jme->pdev,
 706                                         virt_to_page(skb->data),
 707                                         offset_in_page(skb->data),
 708                                         rxbi->len,
 709                                         PCI_DMA_FROMDEVICE);
 710
 711         return 0;
 712 }
 713
 714 static void
 715 jme_free_rx_buf(struct jme_adapter *jme, int i)
 716 {
 717         struct jme_ring *rxring = &(jme->rxring[0]);
 718         struct jme_buffer_info *rxbi = rxring->bufinf;
 719         rxbi += i;
 720
 721         if (rxbi->skb) {
 722                 pci_unmap_page(jme->pdev,
 723                                  rxbi->mapping,
 724                                  rxbi->len,
 725                                  PCI_DMA_FROMDEVICE);
 726                 dev_kfree_skb(rxbi->skb);
 727                 rxbi->skb = NULL;
 728                 rxbi->mapping = 0;
 729                 rxbi->len = 0;
 730         }
 731 }
 732
 733 static void
 734 jme_free_rx_resources(struct jme_adapter *jme)
 735 {
 736         int i;
 737         struct jme_ring *rxring = &(jme->rxring[0]);
 738
 739         if (rxring->alloc) {
 740                 if (rxring->bufinf) {
 741                         for (i = 0 ; i < jme->rx_ring_size ; ++i)
 742                                 jme_free_rx_buf(jme, i);
 743                         kfree(rxring->bufinf);
 744                 }
 745
 746                 dma_free_coherent(&(jme->pdev->dev),
 747                                   RX_RING_ALLOC_SIZE(jme->rx_ring_size),
 748                                   rxring->alloc,
 749                                   rxring->dmaalloc);
 750                 rxring->alloc    = NULL;
 751                 rxring->desc     = NULL;
 752                 rxring->dmaalloc = 0;
 753                 rxring->dma      = 0;
 754                 rxring->bufinf   = NULL;
 755         }
 756         rxring->next_to_use   = 0;
 757         atomic_set(&rxring->next_to_clean, 0);
 758 }
 759
 760 static int
 761 jme_setup_rx_resources(struct jme_adapter *jme)
 762 {
 763         int i;
 764         struct jme_ring *rxring = &(jme->rxring[0]);
 765
 766         rxring->alloc = dma_alloc_coherent(&(jme->pdev->dev),
 767                                    RX_RING_ALLOC_SIZE(jme->rx_ring_size),
 768                                    &(rxring->dmaalloc),
 769                                    GFP_ATOMIC);
 770         if (!rxring->alloc)
 771                 goto err_set_null;
 772
 773         /*
 774          * 16 Bytes align
 775          */
 776         rxring->desc            = (void *)ALIGN((unsigned long)(rxring->alloc),
 777                                                 RING_DESC_ALIGN);
 778         rxring->dma             = ALIGN(rxring->dmaalloc, RING_DESC_ALIGN);
 779         rxring->next_to_use     = 0;
 780         atomic_set(&rxring->next_to_clean, 0);
 781
 782         rxring->bufinf          = kmalloc(sizeof(struct jme_buffer_info) *
 783                                         jme->rx_ring_size, GFP_ATOMIC);
 784         if (unlikely(!(rxring->bufinf)))
 785                 goto err_free_rxring;
 786
 787         /*
 788          * Initiallize Receive Descriptors
 789          */
 790         memset(rxring->bufinf, 0,
 791                 sizeof(struct jme_buffer_info) * jme->rx_ring_size);
 792         for (i = 0 ; i < jme->rx_ring_size ; ++i) {
 793                 if (unlikely(jme_make_new_rx_buf(jme, i))) {
 794                         jme_free_rx_resources(jme);
 795                         return -ENOMEM;
 796                 }
 797
 798                 jme_set_clean_rxdesc(jme, i);
 799         }
 800
 801         return 0;
 802
 803 err_free_rxring:
 804         dma_free_coherent(&(jme->pdev->dev),
 805                           RX_RING_ALLOC_SIZE(jme->rx_ring_size),
 806                           rxring->alloc,
 807                           rxring->dmaalloc);
 808 err_set_null:
 809         rxring->desc = NULL;
 810         rxring->dmaalloc = 0;
 811         rxring->dma = 0;
 812         rxring->bufinf = NULL;
 813
 814         return -ENOMEM;
 815 }
 816
 817 static inline void
 818 jme_enable_rx_engine(struct jme_adapter *jme)
 819 {
 820         /*
 821          * Select Queue 0
 822          */
 823         jwrite32(jme, JME_RXCS, jme->reg_rxcs |
 824                                 RXCS_QUEUESEL_Q0);
 825         wmb();
 826
 827         /*
 828          * Setup RX DMA Bass Address
 829          */
 830         jwrite32(jme, JME_RXDBA_LO, (__u64)(jme->rxring[0].dma) & 0xFFFFFFFFUL);
 831         jwrite32(jme, JME_RXDBA_HI, (__u64)(jme->rxring[0].dma) >> 32);
 832         jwrite32(jme, JME_RXNDA, (__u64)(jme->rxring[0].dma) & 0xFFFFFFFFUL);
 833
 834         /*
 835          * Setup RX Descriptor Count
 836          */
 837         jwrite32(jme, JME_RXQDC, jme->rx_ring_size);
 838
 839         /*
 840          * Setup Unicast Filter
 841          */
 842         jme_set_multi(jme->dev);
 843
 844         /*
 845          * Enable RX Engine
 846          */
 847         wmb();
 848         jwrite32(jme, JME_RXCS, jme->reg_rxcs |
 849                                 RXCS_QUEUESEL_Q0 |
 850                                 RXCS_ENABLE |
 851                                 RXCS_QST);
 852 }
 853
 854 static inline void
 855 jme_restart_rx_engine(struct jme_adapter *jme)
 856 {
 857         /*
 858          * Start RX Engine
 859          */
 860         jwrite32(jme, JME_RXCS, jme->reg_rxcs |
 861                                 RXCS_QUEUESEL_Q0 |
 862                                 RXCS_ENABLE |
 863                                 RXCS_QST);
 864 }
 865
 866 static inline void
 867 jme_disable_rx_engine(struct jme_adapter *jme)
 868 {
 869         int i;
 870         u32 val;
 871
 872         /*
 873          * Disable RX Engine
 874          */
 875         jwrite32(jme, JME_RXCS, jme->reg_rxcs);
 876         wmb();
 877
 878         val = jread32(jme, JME_RXCS);
 879         for (i = JME_RX_DISABLE_TIMEOUT ; (val & RXCS_ENABLE) && i > 0 ; --i) {
 880                 mdelay(1);
 881                 val = jread32(jme, JME_RXCS);
 882                 rmb();
 883         }
 884
 885         if (!i)
 886                 jeprintk(jme->pdev, "Disable RX engine timeout.\n");
 887
 888 }
 889
 890 static int
 891 jme_rxsum_ok(struct jme_adapter *jme, u16 flags)
 892 {
 893         if (!(flags & (RXWBFLAG_TCPON | RXWBFLAG_UDPON | RXWBFLAG_IPV4)))
 894                 return false;
 895
 896         if (unlikely((flags & (RXWBFLAG_MF | RXWBFLAG_TCPON | RXWBFLAG_TCPCS))
 897                         == RXWBFLAG_TCPON)) {
 898                 if (flags & RXWBFLAG_IPV4)
 899 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,33)
 900                         msg_rx_err(jme, "TCP Checksum error\n");
 901 #else
 902                         netif_err(jme, rx_err, jme->dev, "TCP Checksum error\n");
 903 #endif
 904                 return false;
 905         }
 906
 907         if (unlikely((flags & (RXWBFLAG_MF | RXWBFLAG_UDPON | RXWBFLAG_UDPCS))
 908                         == RXWBFLAG_UDPON)) {
 909                 if (flags & RXWBFLAG_IPV4)
 910 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,33)
 911                         msg_rx_err(jme, "UDP Checksum error.\n");
 912 #else
 913                         netif_err(jme, rx_err, jme->dev, "UDP Checksum error.\n");
 914 #endif
 915                 return false;
 916         }
 917
 918         if (unlikely((flags & (RXWBFLAG_IPV4 | RXWBFLAG_IPCS))
 919                         == RXWBFLAG_IPV4)) {
 920 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,33)
 921                 msg_rx_err(jme, "IPv4 Checksum error.\n");
 922 #else
 923                 netif_err(jme, rx_err, jme->dev, "IPv4 Checksum error.\n");
 924 #endif
 925                 return false;
 926         }
 927
 928         return true;
 929 }
 930
 931 static void
 932 jme_alloc_and_feed_skb(struct jme_adapter *jme, int idx)
 933 {
 934         struct jme_ring *rxring = &(jme->rxring[0]);
 935         struct rxdesc *rxdesc = rxring->desc;
 936         struct jme_buffer_info *rxbi = rxring->bufinf;
 937         struct sk_buff *skb;
 938         int framesize;
 939
 940         rxdesc += idx;
 941         rxbi += idx;
 942
 943         skb = rxbi->skb;
 944         pci_dma_sync_single_for_cpu(jme->pdev,
 945                                         rxbi->mapping,
 946                                         rxbi->len,
 947                                         PCI_DMA_FROMDEVICE);
 948
 949         if (unlikely(jme_make_new_rx_buf(jme, idx))) {
 950                 pci_dma_sync_single_for_device(jme->pdev,
 951                                                 rxbi->mapping,
 952                                                 rxbi->len,
 953                                                 PCI_DMA_FROMDEVICE);
 954
 955                 ++(NET_STAT(jme).rx_dropped);
 956         } else {
 957                 framesize = le16_to_cpu(rxdesc->descwb.framesize)
 958                                 - RX_PREPAD_SIZE;
 959
 960                 skb_reserve(skb, RX_PREPAD_SIZE);
 961                 skb_put(skb, framesize);
 962                 skb->protocol = eth_type_trans(skb, jme->dev);
 963
 964                 if (jme_rxsum_ok(jme, le16_to_cpu(rxdesc->descwb.flags)))
 965                         skb->ip_summed = CHECKSUM_UNNECESSARY;
 966                 else
 967 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,35)
 968                         skb->ip_summed = CHECKSUM_NONE;
 969 #else
 970                         skb_checksum_none_assert(skb);
 971 #endif
 972
 973                 if (rxdesc->descwb.flags & cpu_to_le16(RXWBFLAG_TAGON)) {
 974                         if (jme->vlgrp) {
 975                                 jme->jme_vlan_rx(skb, jme->vlgrp,
 976                                         le16_to_cpu(rxdesc->descwb.vlan));
 977                                 NET_STAT(jme).rx_bytes += 4;
 978                         } else {
 979                                 dev_kfree_skb(skb);
 980                         }
 981                 } else {
 982                         jme->jme_rx(skb);
 983                 }
 984
 985                 if ((rxdesc->descwb.flags & cpu_to_le16(RXWBFLAG_DEST)) ==
 986                     cpu_to_le16(RXWBFLAG_DEST_MUL))
 987                         ++(NET_STAT(jme).multicast);
 988
 989                 NET_STAT(jme).rx_bytes += framesize;
 990                 ++(NET_STAT(jme).rx_packets);
 991         }
 992
 993         jme_set_clean_rxdesc(jme, idx);
 994
 995 }
 996
 997 static int
 998 jme_process_receive(struct jme_adapter *jme, int limit)
 999 {
1000         struct jme_ring *rxring = &(jme->rxring[0]);
1001         struct rxdesc *rxdesc = rxring->desc;
1002         int i, j, ccnt, desccnt, mask = jme->rx_ring_mask;
1003
1004         if (unlikely(!atomic_dec_and_test(&jme->rx_cleaning)))
1005                 goto out_inc;
1006
1007         if (unlikely(atomic_read(&jme->link_changing) != 1))
1008                 goto out_inc;
1009
1010         if (unlikely(!netif_carrier_ok(jme->dev)))
1011                 goto out_inc;
1012
1013         i = atomic_read(&rxring->next_to_clean);
1014         while (limit > 0) {
1015                 rxdesc = rxring->desc;
1016                 rxdesc += i;
1017
1018                 if ((rxdesc->descwb.flags & cpu_to_le16(RXWBFLAG_OWN)) ||
1019                 !(rxdesc->descwb.desccnt & RXWBDCNT_WBCPL))
1020                         goto out;
1021                 --limit;
1022
1023                 desccnt = rxdesc->descwb.desccnt & RXWBDCNT_DCNT;
1024
1025                 if (unlikely(desccnt > 1 ||
1026                 rxdesc->descwb.errstat & RXWBERR_ALLERR)) {
1027
1028                         if (rxdesc->descwb.errstat & RXWBERR_CRCERR)
1029                                 ++(NET_STAT(jme).rx_crc_errors);
1030                         else if (rxdesc->descwb.errstat & RXWBERR_OVERUN)
1031                                 ++(NET_STAT(jme).rx_fifo_errors);
1032                         else
1033                                 ++(NET_STAT(jme).rx_errors);
1034
1035                         if (desccnt > 1)
1036                                 limit -= desccnt - 1;
1037
1038                         for (j = i, ccnt = desccnt ; ccnt-- ; ) {
1039                                 jme_set_clean_rxdesc(jme, j);
1040                                 j = (j + 1) & (mask);
1041                         }
1042
1043                 } else {
1044                         jme_alloc_and_feed_skb(jme, i);
1045                 }
1046
1047                 i = (i + desccnt) & (mask);
1048         }
1049
1050 out:
1051         atomic_set(&rxring->next_to_clean, i);
1052
1053 out_inc:
1054         atomic_inc(&jme->rx_cleaning);
1055
1056         return limit > 0 ? limit : 0;
1057
1058 }
1059
1060 static void
1061 jme_attempt_pcc(struct dynpcc_info *dpi, int atmp)
1062 {
1063         if (likely(atmp == dpi->cur)) {
1064                 dpi->cnt = 0;
1065                 return;
1066         }
1067
1068         if (dpi->attempt == atmp) {
1069                 ++(dpi->cnt);
1070         } else {
1071                 dpi->attempt = atmp;
1072                 dpi->cnt = 0;
1073         }
1074
1075 }
1076
1077 static void
1078 jme_dynamic_pcc(struct jme_adapter *jme)
1079 {
1080         register struct dynpcc_info *dpi = &(jme->dpi);
1081
1082         if ((NET_STAT(jme).rx_bytes - dpi->last_bytes) > PCC_P3_THRESHOLD)
1083                 jme_attempt_pcc(dpi, PCC_P3);
1084         else if ((NET_STAT(jme).rx_packets - dpi->last_pkts) > PCC_P2_THRESHOLD ||
1085                  dpi->intr_cnt > PCC_INTR_THRESHOLD)
1086                 jme_attempt_pcc(dpi, PCC_P2);
1087         else
1088                 jme_attempt_pcc(dpi, PCC_P1);
1089
1090         if (unlikely(dpi->attempt != dpi->cur && dpi->cnt > 5)) {
1091                 if (dpi->attempt < dpi->cur)
1092                         tasklet_schedule(&jme->rxclean_task);
1093                 jme_set_rx_pcc(jme, dpi->attempt);
1094                 dpi->cur = dpi->attempt;
1095                 dpi->cnt = 0;
1096         }
1097 }
1098
1099 static void
1100 jme_start_pcc_timer(struct jme_adapter *jme)
1101 {
1102         struct dynpcc_info *dpi = &(jme->dpi);
1103         dpi->last_bytes         = NET_STAT(jme).rx_bytes;
1104         dpi->last_pkts          = NET_STAT(jme).rx_packets;
1105         dpi->intr_cnt           = 0;
1106         jwrite32(jme, JME_TMCSR,
1107                 TMCSR_EN | ((0xFFFFFF - PCC_INTERVAL_US) & TMCSR_CNT));
1108 }
1109
1110 static inline void
1111 jme_stop_pcc_timer(struct jme_adapter *jme)
1112 {
1113         jwrite32(jme, JME_TMCSR, 0);
1114 }
1115
1116 static void
1117 jme_shutdown_nic(struct jme_adapter *jme)
1118 {
1119         u32 phylink;
1120
1121         phylink = jme_linkstat_from_phy(jme);
1122
1123         if (!(phylink & PHY_LINK_UP)) {
1124                 /*
1125                  * Disable all interrupt before issue timer
1126                  */
1127                 jme_stop_irq(jme);
1128                 jwrite32(jme, JME_TIMER2, TMCSR_EN | 0xFFFFFE);
1129         }
1130 }
1131
1132 static void
1133 jme_pcc_tasklet(unsigned long arg)
1134 {
1135         struct jme_adapter *jme = (struct jme_adapter *)arg;
1136         struct net_device *netdev = jme->dev;
1137
1138         if (unlikely(test_bit(JME_FLAG_SHUTDOWN, &jme->flags))) {
1139                 jme_shutdown_nic(jme);
1140                 return;
1141         }
1142
1143         if (unlikely(!netif_carrier_ok(netdev) ||
1144                 (atomic_read(&jme->link_changing) != 1)
1145         )) {
1146                 jme_stop_pcc_timer(jme);
1147                 return;
1148         }
1149
1150         if (!(test_bit(JME_FLAG_POLL, &jme->flags)))
1151                 jme_dynamic_pcc(jme);
1152
1153         jme_start_pcc_timer(jme);
1154 }
1155
1156 static inline void
1157 jme_polling_mode(struct jme_adapter *jme)
1158 {
1159         jme_set_rx_pcc(jme, PCC_OFF);
1160 }
1161
1162 static inline void
1163 jme_interrupt_mode(struct jme_adapter *jme)
1164 {
1165         jme_set_rx_pcc(jme, PCC_P1);
1166 }
1167
1168 static inline int
1169 jme_pseudo_hotplug_enabled(struct jme_adapter *jme)
1170 {
1171         u32 apmc;
1172         apmc = jread32(jme, JME_APMC);
1173         return apmc & JME_APMC_PSEUDO_HP_EN;
1174 }
1175
1176 static void
1177 jme_start_shutdown_timer(struct jme_adapter *jme)
1178 {
1179         u32 apmc;
1180
1181         apmc = jread32(jme, JME_APMC) | JME_APMC_PCIE_SD_EN;
1182         apmc &= ~JME_APMC_EPIEN_CTRL;
1183         if (!no_extplug) {
1184                 jwrite32f(jme, JME_APMC, apmc | JME_APMC_EPIEN_CTRL_EN);
1185                 wmb();
1186         }
1187         jwrite32f(jme, JME_APMC, apmc);
1188
1189         jwrite32f(jme, JME_TIMER2, 0);
1190         set_bit(JME_FLAG_SHUTDOWN, &jme->flags);
1191         jwrite32(jme, JME_TMCSR,
1192                 TMCSR_EN | ((0xFFFFFF - APMC_PHP_SHUTDOWN_DELAY) & TMCSR_CNT));
1193 }
1194
1195 static void
1196 jme_stop_shutdown_timer(struct jme_adapter *jme)
1197 {
1198         u32 apmc;
1199
1200         jwrite32f(jme, JME_TMCSR, 0);
1201         jwrite32f(jme, JME_TIMER2, 0);
1202         clear_bit(JME_FLAG_SHUTDOWN, &jme->flags);
1203
1204         apmc = jread32(jme, JME_APMC);
1205         apmc &= ~(JME_APMC_PCIE_SD_EN | JME_APMC_EPIEN_CTRL);
1206         jwrite32f(jme, JME_APMC, apmc | JME_APMC_EPIEN_CTRL_DIS);
1207         wmb();
1208         jwrite32f(jme, JME_APMC, apmc);
1209 }
1210
1211 static void
1212 jme_link_change_tasklet(unsigned long arg)
1213 {
1214         struct jme_adapter *jme = (struct jme_adapter *)arg;
1215         struct net_device *netdev = jme->dev;
1216         int rc;
1217
1218         while (!atomic_dec_and_test(&jme->link_changing)) {
1219                 atomic_inc(&jme->link_changing);
1220 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,33)
1221                 msg_intr(jme, "Get link change lock failed.\n");
1222 #else
1223                 netif_info(jme, intr, jme->dev, "Get link change lock failed.\n");
1224 #endif
1225                 while (atomic_read(&jme->link_changing) != 1)
1226 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,33)
1227                         msg_intr(jme, "Waiting link change lock.\n");
1228 #else
1229                         netif_info(jme, intr, jme->dev, "Waiting link change lock.\n");
1230 #endif
1231         }
1232
1233         if (jme_check_link(netdev, 1) && jme->old_mtu == netdev->mtu)
1234                 goto out;
1235
1236         jme->old_mtu = netdev->mtu;
1237         netif_stop_queue(netdev);
1238         if (jme_pseudo_hotplug_enabled(jme))
1239                 jme_stop_shutdown_timer(jme);
1240
1241         jme_stop_pcc_timer(jme);
1242         tasklet_disable(&jme->txclean_task);
1243         tasklet_disable(&jme->rxclean_task);
1244         tasklet_disable(&jme->rxempty_task);
1245
1246         if (netif_carrier_ok(netdev)) {
1247                 jme_reset_ghc_speed(jme);
1248                 jme_disable_rx_engine(jme);
1249                 jme_disable_tx_engine(jme);
1250                 jme_reset_mac_processor(jme);
1251                 jme_free_rx_resources(jme);
1252                 jme_free_tx_resources(jme);
1253
1254                 if (test_bit(JME_FLAG_POLL, &jme->flags))
1255                         jme_polling_mode(jme);
1256
1257                 netif_carrier_off(netdev);
1258         }
1259
1260         jme_check_link(netdev, 0);
1261         if (netif_carrier_ok(netdev)) {
1262                 rc = jme_setup_rx_resources(jme);
1263                 if (rc) {
1264                         jeprintk(jme->pdev, "Allocating resources for RX error"
1265                                 ", Device STOPPED!\n");
1266                         goto out_enable_tasklet;
1267                 }
1268
1269                 rc = jme_setup_tx_resources(jme);
1270                 if (rc) {
1271                         jeprintk(jme->pdev, "Allocating resources for TX error"
1272                                 ", Device STOPPED!\n");
1273                         goto err_out_free_rx_resources;
1274                 }
1275
1276                 jme_enable_rx_engine(jme);
1277                 jme_enable_tx_engine(jme);
1278
1279                 netif_start_queue(netdev);
1280
1281                 if (test_bit(JME_FLAG_POLL, &jme->flags))
1282                         jme_interrupt_mode(jme);
1283
1284                 jme_start_pcc_timer(jme);
1285         } else if (jme_pseudo_hotplug_enabled(jme)) {
1286                 jme_start_shutdown_timer(jme);
1287         }
1288
1289         goto out_enable_tasklet;
1290
1291 err_out_free_rx_resources:
1292         jme_free_rx_resources(jme);
1293 out_enable_tasklet:
1294         tasklet_enable(&jme->txclean_task);
1295         tasklet_hi_enable(&jme->rxclean_task);
1296         tasklet_hi_enable(&jme->rxempty_task);
1297 out:
1298         atomic_inc(&jme->link_changing);
1299 }
1300
1301 static void
1302 jme_rx_clean_tasklet(unsigned long arg)
1303 {
1304         struct jme_adapter *jme = (struct jme_adapter *)arg;
1305         struct dynpcc_info *dpi = &(jme->dpi);
1306
1307         jme_process_receive(jme, jme->rx_ring_size);
1308         ++(dpi->intr_cnt);
1309
1310 }
1311
1312 static int
1313 jme_poll(JME_NAPI_HOLDER(holder), JME_NAPI_WEIGHT(budget))
1314 {
1315         struct jme_adapter *jme = jme_napi_priv(holder);
1316         DECLARE_NETDEV
1317         int rest;
1318
1319         rest = jme_process_receive(jme, JME_NAPI_WEIGHT_VAL(budget));
1320
1321         while (atomic_read(&jme->rx_empty) > 0) {
1322                 atomic_dec(&jme->rx_empty);
1323                 ++(NET_STAT(jme).rx_dropped);
1324                 jme_restart_rx_engine(jme);
1325         }
1326         atomic_inc(&jme->rx_empty);
1327
1328         if (rest) {
1329                 JME_RX_COMPLETE(netdev, holder);
1330                 jme_interrupt_mode(jme);
1331         }
1332
1333         JME_NAPI_WEIGHT_SET(budget, rest);
1334         return JME_NAPI_WEIGHT_VAL(budget) - rest;
1335 }
1336
1337 static void
1338 jme_rx_empty_tasklet(unsigned long arg)
1339 {
1340         struct jme_adapter *jme = (struct jme_adapter *)arg;
1341
1342         if (unlikely(atomic_read(&jme->link_changing) != 1))
1343                 return;
1344
1345         if (unlikely(!netif_carrier_ok(jme->dev)))
1346                 return;
1347
1348 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,33)
1349         msg_rx_status(jme, "RX Queue Full!\n");
1350 #else
1351         netif_info(jme, rx_status, jme->dev, "RX Queue Full!\n");
1352 #endif
1353
1354         jme_rx_clean_tasklet(arg);
1355
1356         while (atomic_read(&jme->rx_empty) > 0) {
1357                 atomic_dec(&jme->rx_empty);
1358                 ++(NET_STAT(jme).rx_dropped);
1359                 jme_restart_rx_engine(jme);
1360         }
1361         atomic_inc(&jme->rx_empty);
1362 }
1363
1364 static void
1365 jme_wake_queue_if_stopped(struct jme_adapter *jme)
1366 {
1367         struct jme_ring *txring = &(jme->txring[0]);
1368
1369         smp_wmb();
1370         if (unlikely(netif_queue_stopped(jme->dev) &&
1371         atomic_read(&txring->nr_free) >= (jme->tx_wake_threshold))) {
1372 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,33)
1373                 msg_tx_done(jme, "TX Queue Waked.\n");
1374 #else
1375                 netif_info(jme, tx_done, jme->dev, "TX Queue Waked.\n");
1376 #endif
1377                 netif_wake_queue(jme->dev);
1378         }
1379
1380 }
1381
1382 static void
1383 jme_tx_clean_tasklet(unsigned long arg)
1384 {
1385         struct jme_adapter *jme = (struct jme_adapter *)arg;
1386         struct jme_ring *txring = &(jme->txring[0]);
1387         struct txdesc *txdesc = txring->desc;
1388         struct jme_buffer_info *txbi = txring->bufinf, *ctxbi, *ttxbi;
1389         int i, j, cnt = 0, max, err, mask;
1390
1391         tx_dbg(jme, "Into txclean.\n");
1392
1393         if (unlikely(!atomic_dec_and_test(&jme->tx_cleaning)))
1394                 goto out;
1395
1396         if (unlikely(atomic_read(&jme->link_changing) != 1))
1397                 goto out;
1398
1399         if (unlikely(!netif_carrier_ok(jme->dev)))
1400                 goto out;
1401
1402         max = jme->tx_ring_size - atomic_read(&txring->nr_free);
1403         mask = jme->tx_ring_mask;
1404
1405         for (i = atomic_read(&txring->next_to_clean) ; cnt < max ; ) {
1406
1407                 ctxbi = txbi + i;
1408
1409                 if (likely(ctxbi->skb &&
1410                 !(txdesc[i].descwb.flags & TXWBFLAG_OWN))) {
1411
1412                         tx_dbg(jme, "txclean: %d+%d@%lu\n",
1413                                         i, ctxbi->nr_desc, jiffies);
1414
1415                         err = txdesc[i].descwb.flags & TXWBFLAG_ALLERR;
1416
1417                         for (j = 1 ; j < ctxbi->nr_desc ; ++j) {
1418                                 ttxbi = txbi + ((i + j) & (mask));
1419                                 txdesc[(i + j) & (mask)].dw[0] = 0;
1420
1421                                 pci_unmap_page(jme->pdev,
1422                                                  ttxbi->mapping,
1423                                                  ttxbi->len,
1424                                                  PCI_DMA_TODEVICE);
1425
1426                                 ttxbi->mapping = 0;
1427                                 ttxbi->len = 0;
1428                         }
1429
1430                         dev_kfree_skb(ctxbi->skb);
1431
1432                         cnt += ctxbi->nr_desc;
1433
1434                         if (unlikely(err)) {
1435                                 ++(NET_STAT(jme).tx_carrier_errors);
1436                         } else {
1437                                 ++(NET_STAT(jme).tx_packets);
1438                                 NET_STAT(jme).tx_bytes += ctxbi->len;
1439                         }
1440
1441                         ctxbi->skb = NULL;
1442                         ctxbi->len = 0;
1443                         ctxbi->start_xmit = 0;
1444
1445                 } else {
1446                         break;
1447                 }
1448
1449                 i = (i + ctxbi->nr_desc) & mask;
1450
1451                 ctxbi->nr_desc = 0;
1452         }
1453
1454         tx_dbg(jme, "txclean: done %d@%lu.\n", i, jiffies);
1455         atomic_set(&txring->next_to_clean, i);
1456         atomic_add(cnt, &txring->nr_free);
1457
1458         jme_wake_queue_if_stopped(jme);
1459
1460 out:
1461         atomic_inc(&jme->tx_cleaning);
1462 }
1463
1464 static void
1465 jme_intr_msi(struct jme_adapter *jme, u32 intrstat)
1466 {
1467         /*
1468          * Disable interrupt
1469          */
1470         jwrite32f(jme, JME_IENC, INTR_ENABLE);
1471
1472         if (intrstat & (INTR_LINKCH | INTR_SWINTR)) {
1473                 /*
1474                  * Link change event is critical
1475                  * all other events are ignored
1476                  */
1477                 jwrite32(jme, JME_IEVE, intrstat);
1478                 tasklet_schedule(&jme->linkch_task);
1479                 goto out_reenable;
1480         }
1481
1482         if (intrstat & INTR_TMINTR) {
1483                 jwrite32(jme, JME_IEVE, INTR_TMINTR);
1484                 tasklet_schedule(&jme->pcc_task);
1485         }
1486
1487         if (intrstat & (INTR_PCCTXTO | INTR_PCCTX)) {
1488                 jwrite32(jme, JME_IEVE, INTR_PCCTXTO | INTR_PCCTX | INTR_TX0);
1489                 tasklet_schedule(&jme->txclean_task);
1490         }
1491
1492         if ((intrstat & (INTR_PCCRX0TO | INTR_PCCRX0 | INTR_RX0EMP))) {
1493                 jwrite32(jme, JME_IEVE, (intrstat & (INTR_PCCRX0TO |
1494                                                      INTR_PCCRX0 |
1495                                                      INTR_RX0EMP)) |
1496                                         INTR_RX0);
1497         }
1498
1499         if (test_bit(JME_FLAG_POLL, &jme->flags)) {
1500                 if (intrstat & INTR_RX0EMP)
1501                         atomic_inc(&jme->rx_empty);
1502
1503                 if ((intrstat & (INTR_PCCRX0TO | INTR_PCCRX0 | INTR_RX0EMP))) {
1504                         if (likely(JME_RX_SCHEDULE_PREP(jme))) {
1505                                 jme_polling_mode(jme);
1506                                 JME_RX_SCHEDULE(jme);
1507                         }
1508                 }
1509         } else {
1510                 if (intrstat & INTR_RX0EMP) {
1511                         atomic_inc(&jme->rx_empty);
1512                         tasklet_hi_schedule(&jme->rxempty_task);
1513                 } else if (intrstat & (INTR_PCCRX0TO | INTR_PCCRX0)) {
1514                         tasklet_hi_schedule(&jme->rxclean_task);
1515                 }
1516         }
1517
1518 out_reenable:
1519         /*
1520          * Re-enable interrupt
1521          */
1522         jwrite32f(jme, JME_IENS, INTR_ENABLE);
1523 }
1524
1525 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,18)
1526 static irqreturn_t
1527 jme_intr(int irq, void *dev_id, struct pt_regs *regs)
1528 #else
1529 static irqreturn_t
1530 jme_intr(int irq, void *dev_id)
1531 #endif
1532 {
1533         struct net_device *netdev = dev_id;
1534         struct jme_adapter *jme = netdev_priv(netdev);
1535         u32 intrstat;
1536
1537         intrstat = jread32(jme, JME_IEVE);
1538
1539         /*
1540          * Check if it's really an interrupt for us
1541          */
1542         if (unlikely((intrstat & INTR_ENABLE) == 0))
1543                 return IRQ_NONE;
1544
1545         /*
1546          * Check if the device still exist
1547          */
1548         if (unlikely(intrstat == ~((typeof(intrstat))0)))
1549                 return IRQ_NONE;
1550
1551         jme_intr_msi(jme, intrstat);
1552
1553         return IRQ_HANDLED;
1554 }
1555
1556 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,18)
1557 static irqreturn_t
1558 jme_msi(int irq, void *dev_id, struct pt_regs *regs)
1559 #else
1560 static irqreturn_t
1561 jme_msi(int irq, void *dev_id)
1562 #endif
1563 {
1564         struct net_device *netdev = dev_id;
1565         struct jme_adapter *jme = netdev_priv(netdev);
1566         u32 intrstat;
1567
1568         intrstat = jread32(jme, JME_IEVE);
1569
1570         jme_intr_msi(jme, intrstat);
1571
1572         return IRQ_HANDLED;
1573 }
1574
1575 static void
1576 jme_reset_link(struct jme_adapter *jme)
1577 {
1578         jwrite32(jme, JME_TMCSR, TMCSR_SWIT);
1579 }
1580
1581 static void
1582 jme_restart_an(struct jme_adapter *jme)
1583 {
1584         u32 bmcr;
1585
1586         spin_lock_bh(&jme->phy_lock);
1587         bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
1588         bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
1589         jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, bmcr);
1590         spin_unlock_bh(&jme->phy_lock);
1591 }
1592
1593 static int
1594 jme_request_irq(struct jme_adapter *jme)
1595 {
1596         int rc;
1597         struct net_device *netdev = jme->dev;
1598 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,18)
1599         irqreturn_t (*handler)(int, void *, struct pt_regs *) = jme_intr;
1600         int irq_flags = SA_SHIRQ;
1601 #else
1602         irq_handler_t handler = jme_intr;
1603         int irq_flags = IRQF_SHARED;
1604 #endif
1605
1606         if (!pci_enable_msi(jme->pdev)) {
1607                 set_bit(JME_FLAG_MSI, &jme->flags);
1608                 handler = jme_msi;
1609                 irq_flags = 0;
1610         }
1611
1612         rc = request_irq(jme->pdev->irq, handler, irq_flags, netdev->name,
1613                           netdev);
1614         if (rc) {
1615                 jeprintk(jme->pdev,
1616                         "Unable to request %s interrupt (return: %d)\n",
1617                         test_bit(JME_FLAG_MSI, &jme->flags) ? "MSI" : "INTx",
1618                         rc);
1619
1620                 if (test_bit(JME_FLAG_MSI, &jme->flags)) {
1621                         pci_disable_msi(jme->pdev);
1622                         clear_bit(JME_FLAG_MSI, &jme->flags);
1623                 }
1624         } else {
1625                 netdev->irq = jme->pdev->irq;
1626         }
1627
1628         return rc;
1629 }
1630
1631 static void
1632 jme_free_irq(struct jme_adapter *jme)
1633 {
1634         free_irq(jme->pdev->irq, jme->dev);
1635         if (test_bit(JME_FLAG_MSI, &jme->flags)) {
1636                 pci_disable_msi(jme->pdev);
1637                 clear_bit(JME_FLAG_MSI, &jme->flags);
1638                 jme->dev->irq = jme->pdev->irq;
1639         }
1640 }
1641
1642 static int
1643 jme_open(struct net_device *netdev)
1644 {
1645         struct jme_adapter *jme = netdev_priv(netdev);
1646         int rc;
1647
1648         jme_clear_pm(jme);
1649         JME_NAPI_ENABLE(jme);
1650
1651         tasklet_enable(&jme->linkch_task);
1652         tasklet_enable(&jme->txclean_task);
1653         tasklet_hi_enable(&jme->rxclean_task);
1654         tasklet_hi_enable(&jme->rxempty_task);
1655
1656         rc = jme_request_irq(jme);
1657         if (rc)
1658                 goto err_out;
1659
1660         jme_start_irq(jme);
1661
1662         if (test_bit(JME_FLAG_SSET, &jme->flags))
1663                 jme_set_settings(netdev, &jme->old_ecmd);
1664         else
1665                 jme_reset_phy_processor(jme);
1666
1667         jme_reset_link(jme);
1668
1669         return 0;
1670
1671 err_out:
1672         netif_stop_queue(netdev);
1673         netif_carrier_off(netdev);
1674         return rc;
1675 }
1676
1677 #ifdef CONFIG_PM
1678 static void
1679 jme_set_100m_half(struct jme_adapter *jme)
1680 {
1681         u32 bmcr, tmp;
1682
1683         bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
1684         tmp = bmcr & ~(BMCR_ANENABLE | BMCR_SPEED100 |
1685                        BMCR_SPEED1000 | BMCR_FULLDPLX);
1686         tmp |= BMCR_SPEED100;
1687
1688         if (bmcr != tmp)
1689                 jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, tmp);
1690
1691         if (jme->fpgaver)
1692                 jwrite32(jme, JME_GHC, GHC_SPEED_100M | GHC_LINK_POLL);
1693         else
1694                 jwrite32(jme, JME_GHC, GHC_SPEED_100M);
1695 }
1696
1697 #define JME_WAIT_LINK_TIME 2000 /* 2000ms */
1698 static void
1699 jme_wait_link(struct jme_adapter *jme)
1700 {
1701         u32 phylink, to = JME_WAIT_LINK_TIME;
1702
1703         mdelay(1000);
1704         phylink = jme_linkstat_from_phy(jme);
1705         while (!(phylink & PHY_LINK_UP) && (to -= 10) > 0) {
1706                 mdelay(10);
1707                 phylink = jme_linkstat_from_phy(jme);
1708         }
1709 }
1710 #endif
1711
1712 static inline void
1713 jme_phy_off(struct jme_adapter *jme)
1714 {
1715         jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, BMCR_PDOWN);
1716 }
1717
1718 static int
1719 jme_close(struct net_device *netdev)
1720 {
1721         struct jme_adapter *jme = netdev_priv(netdev);
1722
1723         netif_stop_queue(netdev);
1724         netif_carrier_off(netdev);
1725
1726         jme_stop_irq(jme);
1727         jme_free_irq(jme);
1728
1729         JME_NAPI_DISABLE(jme);
1730
1731         tasklet_disable(&jme->linkch_task);
1732         tasklet_disable(&jme->txclean_task);
1733         tasklet_disable(&jme->rxclean_task);
1734         tasklet_disable(&jme->rxempty_task);
1735
1736         jme_reset_ghc_speed(jme);
1737         jme_disable_rx_engine(jme);
1738         jme_disable_tx_engine(jme);
1739         jme_reset_mac_processor(jme);
1740         jme_free_rx_resources(jme);
1741         jme_free_tx_resources(jme);
1742         jme->phylink = 0;
1743         jme_phy_off(jme);
1744
1745         return 0;
1746 }
1747
1748 static int
1749 jme_alloc_txdesc(struct jme_adapter *jme,
1750                         struct sk_buff *skb)
1751 {
1752         struct jme_ring *txring = &(jme->txring[0]);
1753         int idx, nr_alloc, mask = jme->tx_ring_mask;
1754
1755         idx = txring->next_to_use;
1756         nr_alloc = skb_shinfo(skb)->nr_frags + 2;
1757
1758         if (unlikely(atomic_read(&txring->nr_free) < nr_alloc))
1759                 return -1;
1760
1761         atomic_sub(nr_alloc, &txring->nr_free);
1762
1763         txring->next_to_use = (txring->next_to_use + nr_alloc) & mask;
1764
1765         return idx;
1766 }
1767
1768 static void
1769 jme_fill_tx_map(struct pci_dev *pdev,
1770                 struct txdesc *txdesc,
1771                 struct jme_buffer_info *txbi,
1772                 struct page *page,
1773                 u32 page_offset,
1774                 u32 len,
1775                 u8 hidma)
1776 {
1777         dma_addr_t dmaaddr;
1778
1779         dmaaddr = pci_map_page(pdev,
1780                                 page,
1781                                 page_offset,
1782                                 len,
1783                                 PCI_DMA_TODEVICE);
1784
1785         pci_dma_sync_single_for_device(pdev,
1786                                        dmaaddr,
1787                                        len,
1788                                        PCI_DMA_TODEVICE);
1789
1790         txdesc->dw[0] = 0;
1791         txdesc->dw[1] = 0;
1792         txdesc->desc2.flags     = TXFLAG_OWN;
1793         txdesc->desc2.flags     |= (hidma) ? TXFLAG_64BIT : 0;
1794         txdesc->desc2.datalen   = cpu_to_le16(len);
1795         txdesc->desc2.bufaddrh  = cpu_to_le32((__u64)dmaaddr >> 32);
1796         txdesc->desc2.bufaddrl  = cpu_to_le32(
1797                                         (__u64)dmaaddr & 0xFFFFFFFFUL);
1798
1799         txbi->mapping = dmaaddr;
1800         txbi->len = len;
1801 }
1802
1803 static void
1804 jme_map_tx_skb(struct jme_adapter *jme, struct sk_buff *skb, int idx)
1805 {
1806         struct jme_ring *txring = &(jme->txring[0]);
1807         struct txdesc *txdesc = txring->desc, *ctxdesc;
1808         struct jme_buffer_info *txbi = txring->bufinf, *ctxbi;
1809         u8 hidma = jme->dev->features & NETIF_F_HIGHDMA;
1810         int i, nr_frags = skb_shinfo(skb)->nr_frags;
1811         int mask = jme->tx_ring_mask;
1812         struct skb_frag_struct *frag;
1813         u32 len;
1814
1815         for (i = 0 ; i < nr_frags ; ++i) {
1816                 frag = &skb_shinfo(skb)->frags[i];
1817                 ctxdesc = txdesc + ((idx + i + 2) & (mask));
1818                 ctxbi = txbi + ((idx + i + 2) & (mask));
1819
1820                 jme_fill_tx_map(jme->pdev, ctxdesc, ctxbi, frag->page,
1821                                  frag->page_offset, frag->size, hidma);
1822         }
1823
1824         len = skb_is_nonlinear(skb) ? skb_headlen(skb) : skb->len;
1825         ctxdesc = txdesc + ((idx + 1) & (mask));
1826         ctxbi = txbi + ((idx + 1) & (mask));
1827         jme_fill_tx_map(jme->pdev, ctxdesc, ctxbi, virt_to_page(skb->data),
1828                         offset_in_page(skb->data), len, hidma);
1829
1830 }
1831
1832 static int
1833 jme_expand_header(struct jme_adapter *jme, struct sk_buff *skb)
1834 {
1835         if (unlikely(
1836 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,17)
1837         skb_shinfo(skb)->tso_size
1838 #else
1839         skb_shinfo(skb)->gso_size
1840 #endif
1841                         && skb_header_cloned(skb) &&
1842                         pskb_expand_head(skb, 0, 0, GFP_ATOMIC))) {
1843                 dev_kfree_skb(skb);
1844                 return -1;
1845         }
1846
1847         return 0;
1848 }
1849
1850 static int
1851 jme_tx_tso(struct sk_buff *skb, __le16 *mss, u8 *flags)
1852 {
1853 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,17)
1854         *mss = cpu_to_le16(skb_shinfo(skb)->tso_size << TXDESC_MSS_SHIFT);
1855 #else
1856         *mss = cpu_to_le16(skb_shinfo(skb)->gso_size << TXDESC_MSS_SHIFT);
1857 #endif
1858         if (*mss) {
1859                 *flags |= TXFLAG_LSEN;
1860
1861                 if (skb->protocol == htons(ETH_P_IP)) {
1862                         struct iphdr *iph = ip_hdr(skb);
1863
1864                         iph->check = 0;
1865                         tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
1866                                                                 iph->daddr, 0,
1867                                                                 IPPROTO_TCP,
1868                                                                 0);
1869                 } else {
1870                         struct ipv6hdr *ip6h = ipv6_hdr(skb);
1871
1872                         tcp_hdr(skb)->check = ~csum_ipv6_magic(&ip6h->saddr,
1873                                                                 &ip6h->daddr, 0,
1874                                                                 IPPROTO_TCP,
1875                                                                 0);
1876                 }
1877
1878                 return 0;
1879         }
1880
1881         return 1;
1882 }
1883
1884 static void
1885 jme_tx_csum(struct jme_adapter *jme, struct sk_buff *skb, u8 *flags)
1886 {
1887 #ifdef CHECKSUM_PARTIAL
1888         if (skb->ip_summed == CHECKSUM_PARTIAL)
1889 #else
1890         if (skb->ip_summed == CHECKSUM_HW)
1891 #endif
1892         {
1893                 u8 ip_proto;
1894
1895 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,21)
1896                 if (skb->protocol == htons(ETH_P_IP))
1897                         ip_proto = ip_hdr(skb)->protocol;
1898                 else if (skb->protocol == htons(ETH_P_IPV6))
1899                         ip_proto = ipv6_hdr(skb)->nexthdr;
1900                 else
1901                         ip_proto = 0;
1902 #else
1903                 switch (skb->protocol) {
1904                 case htons(ETH_P_IP):
1905                         ip_proto = ip_hdr(skb)->protocol;
1906                         break;
1907                 case htons(ETH_P_IPV6):
1908                         ip_proto = ipv6_hdr(skb)->nexthdr;
1909                         break;
1910                 default:
1911                         ip_proto = 0;
1912                         break;
1913                 }
1914 #endif
1915
1916                 switch (ip_proto) {
1917                 case IPPROTO_TCP:
1918                         *flags |= TXFLAG_TCPCS;
1919                         break;
1920                 case IPPROTO_UDP:
1921                         *flags |= TXFLAG_UDPCS;
1922                         break;
1923                 default:
1924 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,33)
1925                         msg_tx_err(jme, "Error upper layer protocol.\n");
1926 #else
1927                         netif_err(jme, tx_err, jme->dev, "Error upper layer protocol.\n");
1928 #endif
1929                         break;
1930                 }
1931         }
1932 }
1933
1934 static inline void
1935 jme_tx_vlan(struct sk_buff *skb, __le16 *vlan, u8 *flags)
1936 {
1937         if (vlan_tx_tag_present(skb)) {
1938                 *flags |= TXFLAG_TAGON;
1939                 *vlan = cpu_to_le16(vlan_tx_tag_get(skb));
1940         }
1941 }
1942
1943 static int
1944 jme_fill_tx_desc(struct jme_adapter *jme, struct sk_buff *skb, int idx)
1945 {
1946         struct jme_ring *txring = &(jme->txring[0]);
1947         struct txdesc *txdesc;
1948         struct jme_buffer_info *txbi;
1949         u8 flags;
1950
1951         txdesc = (struct txdesc *)txring->desc + idx;
1952         txbi = txring->bufinf + idx;
1953
1954         txdesc->dw[0] = 0;
1955         txdesc->dw[1] = 0;
1956         txdesc->dw[2] = 0;
1957         txdesc->dw[3] = 0;
1958         txdesc->desc1.pktsize = cpu_to_le16(skb->len);
1959         /*
1960          * Set OWN bit at final.
1961          * When kernel transmit faster than NIC.
1962          * And NIC trying to send this descriptor before we tell
1963          * it to start sending this TX queue.
1964          * Other fields are already filled correctly.
1965          */
1966         wmb();
1967         flags = TXFLAG_OWN | TXFLAG_INT;
1968         /*
1969          * Set checksum flags while not tso
1970          */
1971         if (jme_tx_tso(skb, &txdesc->desc1.mss, &flags))
1972                 jme_tx_csum(jme, skb, &flags);
1973         jme_tx_vlan(skb, &txdesc->desc1.vlan, &flags);
1974         jme_map_tx_skb(jme, skb, idx);
1975         txdesc->desc1.flags = flags;
1976         /*
1977          * Set tx buffer info after telling NIC to send
1978          * For better tx_clean timing
1979          */
1980         wmb();
1981         txbi->nr_desc = skb_shinfo(skb)->nr_frags + 2;
1982         txbi->skb = skb;
1983         txbi->len = skb->len;
1984         txbi->start_xmit = jiffies;
1985         if (!txbi->start_xmit)
1986                 txbi->start_xmit = (0UL-1);
1987
1988         return 0;
1989 }
1990
1991 static void
1992 jme_stop_queue_if_full(struct jme_adapter *jme)
1993 {
1994         struct jme_ring *txring = &(jme->txring[0]);
1995         struct jme_buffer_info *txbi = txring->bufinf;
1996         int idx = atomic_read(&txring->next_to_clean);
1997
1998         txbi += idx;
1999
2000         smp_wmb();
2001         if (unlikely(atomic_read(&txring->nr_free) < (MAX_SKB_FRAGS+2))) {
2002                 netif_stop_queue(jme->dev);
2003 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,33)
2004                 msg_tx_queued(jme, "TX Queue Paused.\n");
2005 #else
2006                 netif_info(jme, tx_queued, jme->dev, "TX Queue Paused.\n");
2007 #endif
2008                 smp_wmb();
2009                 if (atomic_read(&txring->nr_free)
2010                         >= (jme->tx_wake_threshold)) {
2011                         netif_wake_queue(jme->dev);
2012 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,33)
2013                         msg_tx_queued(jme, "TX Queue Fast Waked.\n");
2014 #else
2015                         netif_info(jme, tx_queued, jme->dev, "TX Queue Fast Waked.\n");
2016 #endif
2017                 }
2018         }
2019
2020         if (unlikely(txbi->start_xmit &&
2021                         (jiffies - txbi->start_xmit) >= TX_TIMEOUT &&
2022                         txbi->skb)) {
2023                 netif_stop_queue(jme->dev);
2024 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,33)
2025                 msg_tx_queued(jme, "TX Queue Stopped %d@%lu.\n", idx, jiffies);
2026 #else
2027                 netif_info(jme, tx_queued, jme->dev, "TX Queue Stopped %d@%lu.\n", idx, jiffies);
2028 #endif
2029         }
2030 }
2031
2032 /*
2033  * This function is already protected by netif_tx_lock()
2034  */
2035
2036 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,31)
2037 static int
2038 #else
2039 static netdev_tx_t
2040 #endif
2041 jme_start_xmit(struct sk_buff *skb, struct net_device *netdev)
2042 {
2043         struct jme_adapter *jme = netdev_priv(netdev);
2044         int idx;
2045
2046         if (unlikely(jme_expand_header(jme, skb))) {
2047                 ++(NET_STAT(jme).tx_dropped);
2048                 return NETDEV_TX_OK;
2049         }
2050
2051         idx = jme_alloc_txdesc(jme, skb);
2052
2053         if (unlikely(idx < 0)) {
2054                 netif_stop_queue(netdev);
2055 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,33)
2056                 msg_tx_err(jme, "BUG! Tx ring full when queue awake!\n");
2057 #else
2058                 netif_err(jme, tx_err, jme->dev, "BUG! Tx ring full when queue awake!\n");
2059 #endif
2060
2061                 return NETDEV_TX_BUSY;
2062         }
2063
2064         jme_fill_tx_desc(jme, skb, idx);
2065
2066         jwrite32(jme, JME_TXCS, jme->reg_txcs |
2067                                 TXCS_SELECT_QUEUE0 |
2068                                 TXCS_QUEUE0S |
2069                                 TXCS_ENABLE);
2070 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,29)
2071         netdev->trans_start = jiffies;
2072 #endif
2073
2074         tx_dbg(jme, "xmit: %d+%d@%lu\n", idx,
2075                         skb_shinfo(skb)->nr_frags + 2,
2076                         jiffies);
2077         jme_stop_queue_if_full(jme);
2078
2079         return NETDEV_TX_OK;
2080 }
2081
2082 static int
2083 jme_set_macaddr(struct net_device *netdev, void *p)
2084 {
2085         struct jme_adapter *jme = netdev_priv(netdev);
2086         struct sockaddr *addr = p;
2087         u32 val;
2088
2089         if (netif_running(netdev))
2090                 return -EBUSY;
2091
2092         spin_lock_bh(&jme->macaddr_lock);
2093         memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
2094
2095         val = (addr->sa_data[3] & 0xff) << 24 |
2096               (addr->sa_data[2] & 0xff) << 16 |
2097               (addr->sa_data[1] & 0xff) <<  8 |
2098               (addr->sa_data[0] & 0xff);
2099         jwrite32(jme, JME_RXUMA_LO, val);
2100         val = (addr->sa_data[5] & 0xff) << 8 |
2101               (addr->sa_data[4] & 0xff);
2102         jwrite32(jme, JME_RXUMA_HI, val);
2103         spin_unlock_bh(&jme->macaddr_lock);
2104
2105         return 0;
2106 }
2107
2108 static void
2109 jme_set_multi(struct net_device *netdev)
2110 {
2111         struct jme_adapter *jme = netdev_priv(netdev);
2112         u32 mc_hash[2] = {};
2113 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,33)
2114         int i;
2115 #endif
2116
2117         spin_lock_bh(&jme->rxmcs_lock);
2118
2119         jme->reg_rxmcs |= RXMCS_BRDFRAME | RXMCS_UNIFRAME;
2120
2121         if (netdev->flags & IFF_PROMISC) {
2122                 jme->reg_rxmcs |= RXMCS_ALLFRAME;
2123         } else if (netdev->flags & IFF_ALLMULTI) {
2124                 jme->reg_rxmcs |= RXMCS_ALLMULFRAME;
2125         } else if (netdev->flags & IFF_MULTICAST) {
2126 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,34)
2127                 struct dev_mc_list *mclist;
2128 #else
2129                 struct netdev_hw_addr *ha;
2130 #endif
2131                 int bit_nr;
2132
2133                 jme->reg_rxmcs |= RXMCS_MULFRAME | RXMCS_MULFILTERED;
2134 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,33)
2135                 for (i = 0, mclist = netdev->mc_list;
2136                         mclist && i < netdev->mc_count;
2137                         ++i, mclist = mclist->next) {
2138 #elif LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,34)
2139                 netdev_for_each_mc_addr(mclist, netdev) {
2140 #else
2141                 netdev_for_each_mc_addr(ha, netdev) {
2142 #endif
2143 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,34)
2144                         bit_nr = ether_crc(ETH_ALEN, mclist->dmi_addr) & 0x3F;
2145 #else
2146                         bit_nr = ether_crc(ETH_ALEN, ha->addr) & 0x3F;
2147 #endif
2148                         mc_hash[bit_nr >> 5] |= 1 << (bit_nr & 0x1F);
2149                 }
2150
2151                 jwrite32(jme, JME_RXMCHT_LO, mc_hash[0]);
2152                 jwrite32(jme, JME_RXMCHT_HI, mc_hash[1]);
2153         }
2154
2155         wmb();
2156         jwrite32(jme, JME_RXMCS, jme->reg_rxmcs);
2157
2158         spin_unlock_bh(&jme->rxmcs_lock);
2159 }
2160
2161 static int
2162 jme_change_mtu(struct net_device *netdev, int new_mtu)
2163 {
2164         struct jme_adapter *jme = netdev_priv(netdev);
2165
2166         if (new_mtu == jme->old_mtu)
2167                 return 0;
2168
2169         if (((new_mtu + ETH_HLEN) > MAX_ETHERNET_JUMBO_PACKET_SIZE) ||
2170                 ((new_mtu) < IPV6_MIN_MTU))
2171                 return -EINVAL;
2172
2173         if (new_mtu > 4000) {
2174                 jme->reg_rxcs &= ~RXCS_FIFOTHNP;
2175                 jme->reg_rxcs |= RXCS_FIFOTHNP_64QW;
2176                 jme_restart_rx_engine(jme);
2177         } else {
2178                 jme->reg_rxcs &= ~RXCS_FIFOTHNP;
2179                 jme->reg_rxcs |= RXCS_FIFOTHNP_128QW;
2180                 jme_restart_rx_engine(jme);
2181         }
2182
2183         if (new_mtu > 1900) {
2184                 netdev->features &= ~(NETIF_F_HW_CSUM |
2185                                 NETIF_F_TSO
2186 #ifdef NETIF_F_TSO6
2187                                 | NETIF_F_TSO6
2188 #endif
2189                                 );
2190         } else {
2191                 if (test_bit(JME_FLAG_TXCSUM, &jme->flags))
2192                         netdev->features |= NETIF_F_HW_CSUM;
2193                 if (test_bit(JME_FLAG_TSO, &jme->flags))
2194                         netdev->features |= NETIF_F_TSO
2195 #ifdef NETIF_F_TSO6
2196                                 | NETIF_F_TSO6
2197 #endif
2198                                 ;
2199         }
2200
2201         netdev->mtu = new_mtu;
2202         jme_reset_link(jme);
2203
2204         return 0;
2205 }
2206
2207 static void
2208 jme_tx_timeout(struct net_device *netdev)
2209 {
2210         struct jme_adapter *jme = netdev_priv(netdev);
2211
2212         jme->phylink = 0;
2213         jme_reset_phy_processor(jme);
2214         if (test_bit(JME_FLAG_SSET, &jme->flags))
2215                 jme_set_settings(netdev, &jme->old_ecmd);
2216
2217         /*
2218          * Force to Reset the link again
2219          */
2220         jme_reset_link(jme);
2221 }
2222
2223 static inline void jme_pause_rx(struct jme_adapter *jme)
2224 {
2225         atomic_dec(&jme->link_changing);
2226
2227         jme_set_rx_pcc(jme, PCC_OFF);
2228         if (test_bit(JME_FLAG_POLL, &jme->flags)) {
2229                 JME_NAPI_DISABLE(jme);
2230         } else {
2231                 tasklet_disable(&jme->rxclean_task);
2232                 tasklet_disable(&jme->rxempty_task);
2233         }
2234 }
2235
2236 static inline void jme_resume_rx(struct jme_adapter *jme)
2237 {
2238         struct dynpcc_info *dpi = &(jme->dpi);
2239
2240         if (test_bit(JME_FLAG_POLL, &jme->flags)) {
2241                 JME_NAPI_ENABLE(jme);
2242         } else {
2243                 tasklet_hi_enable(&jme->rxclean_task);
2244                 tasklet_hi_enable(&jme->rxempty_task);
2245         }
2246         dpi->cur                = PCC_P1;
2247         dpi->attempt            = PCC_P1;
2248         dpi->cnt                = 0;
2249         jme_set_rx_pcc(jme, PCC_P1);
2250
2251         atomic_inc(&jme->link_changing);
2252 }
2253
2254 static void
2255 jme_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp)
2256 {
2257         struct jme_adapter *jme = netdev_priv(netdev);
2258
2259         jme_pause_rx(jme);
2260         jme->vlgrp = grp;
2261         jme_resume_rx(jme);
2262 }
2263
2264 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,21)
2265 static void
2266 jme_vlan_rx_kill_vid(struct net_device *netdev, unsigned short vid)
2267 {
2268         struct jme_adapter *jme = netdev_priv(netdev);
2269
2270         if(jme->vlgrp) {
2271                 jme_pause_rx(jme);
2272 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,20)
2273                 jme->vlgrp->vlan_devices[vid] = NULL;
2274 #else
2275                 vlan_group_set_device(jme->vlgrp, vid, NULL);
2276 #endif
2277                 jme_resume_rx(jme);
2278         }
2279 }
2280 #endif
2281
2282 static void
2283 jme_get_drvinfo(struct net_device *netdev,
2284                      struct ethtool_drvinfo *info)
2285 {
2286         struct jme_adapter *jme = netdev_priv(netdev);
2287
2288         strcpy(info->driver, DRV_NAME);
2289         strcpy(info->version, DRV_VERSION);
2290         strcpy(info->bus_info, pci_name(jme->pdev));
2291 }
2292
2293 static int
2294 jme_get_regs_len(struct net_device *netdev)
2295 {
2296         return JME_REG_LEN;
2297 }
2298
2299 static void
2300 mmapio_memcpy(struct jme_adapter *jme, u32 *p, u32 reg, int len)
2301 {
2302         int i;
2303
2304         for (i = 0 ; i < len ; i += 4)
2305                 p[i >> 2] = jread32(jme, reg + i);
2306 }
2307
2308 static void
2309 mdio_memcpy(struct jme_adapter *jme, u32 *p, int reg_nr)
2310 {
2311         int i;
2312         u16 *p16 = (u16 *)p;
2313
2314         for (i = 0 ; i < reg_nr ; ++i)
2315                 p16[i] = jme_mdio_read(jme->dev, jme->mii_if.phy_id, i);
2316 }
2317
2318 static void
2319 jme_get_regs(struct net_device *netdev, struct ethtool_regs *regs, void *p)
2320 {
2321         struct jme_adapter *jme = netdev_priv(netdev);
2322         u32 *p32 = (u32 *)p;
2323
2324         memset(p, 0xFF, JME_REG_LEN);
2325
2326         regs->version = 1;
2327         mmapio_memcpy(jme, p32, JME_MAC, JME_MAC_LEN);
2328
2329         p32 += 0x100 >> 2;
2330         mmapio_memcpy(jme, p32, JME_PHY, JME_PHY_LEN);
2331
2332         p32 += 0x100 >> 2;
2333         mmapio_memcpy(jme, p32, JME_MISC, JME_MISC_LEN);
2334
2335         p32 += 0x100 >> 2;
2336         mmapio_memcpy(jme, p32, JME_RSS, JME_RSS_LEN);
2337
2338         p32 += 0x100 >> 2;
2339         mdio_memcpy(jme, p32, JME_PHY_REG_NR);
2340 }
2341
2342 static int
2343 jme_get_coalesce(struct net_device *netdev, struct ethtool_coalesce *ecmd)
2344 {
2345         struct jme_adapter *jme = netdev_priv(netdev);
2346
2347         ecmd->tx_coalesce_usecs = PCC_TX_TO;
2348         ecmd->tx_max_coalesced_frames = PCC_TX_CNT;
2349
2350         if (test_bit(JME_FLAG_POLL, &jme->flags)) {
2351                 ecmd->use_adaptive_rx_coalesce = false;
2352                 ecmd->rx_coalesce_usecs = 0;
2353                 ecmd->rx_max_coalesced_frames = 0;
2354                 return 0;
2355         }
2356
2357         ecmd->use_adaptive_rx_coalesce = true;
2358
2359         switch (jme->dpi.cur) {
2360         case PCC_P1:
2361                 ecmd->rx_coalesce_usecs = PCC_P1_TO;
2362                 ecmd->rx_max_coalesced_frames = PCC_P1_CNT;
2363                 break;
2364         case PCC_P2:
2365                 ecmd->rx_coalesce_usecs = PCC_P2_TO;
2366                 ecmd->rx_max_coalesced_frames = PCC_P2_CNT;
2367                 break;
2368         case PCC_P3:
2369                 ecmd->rx_coalesce_usecs = PCC_P3_TO;
2370                 ecmd->rx_max_coalesced_frames = PCC_P3_CNT;
2371                 break;
2372         default:
2373                 break;
2374         }
2375
2376         return 0;
2377 }
2378
2379 static int
2380 jme_set_coalesce(struct net_device *netdev, struct ethtool_coalesce *ecmd)
2381 {
2382         struct jme_adapter *jme = netdev_priv(netdev);
2383         struct dynpcc_info *dpi = &(jme->dpi);
2384
2385         if (netif_running(netdev))
2386                 return -EBUSY;
2387
2388         if (ecmd->use_adaptive_rx_coalesce &&
2389             test_bit(JME_FLAG_POLL, &jme->flags)) {
2390                 clear_bit(JME_FLAG_POLL, &jme->flags);
2391                 jme->jme_rx = netif_rx;
2392                 jme->jme_vlan_rx = vlan_hwaccel_rx;
2393                 dpi->cur                = PCC_P1;
2394                 dpi->attempt            = PCC_P1;
2395                 dpi->cnt                = 0;
2396                 jme_set_rx_pcc(jme, PCC_P1);
2397                 jme_interrupt_mode(jme);
2398         } else if (!(ecmd->use_adaptive_rx_coalesce) &&
2399                    !(test_bit(JME_FLAG_POLL, &jme->flags))) {
2400                 set_bit(JME_FLAG_POLL, &jme->flags);
2401                 jme->jme_rx = netif_receive_skb;
2402                 jme->jme_vlan_rx = vlan_hwaccel_receive_skb;
2403                 jme_interrupt_mode(jme);
2404         }
2405
2406         return 0;
2407 }
2408
2409 static void
2410 jme_get_pauseparam(struct net_device *netdev,
2411                         struct ethtool_pauseparam *ecmd)
2412 {
2413         struct jme_adapter *jme = netdev_priv(netdev);
2414         u32 val;
2415
2416         ecmd->tx_pause = (jme->reg_txpfc & TXPFC_PF_EN) != 0;
2417         ecmd->rx_pause = (jme->reg_rxmcs & RXMCS_FLOWCTRL) != 0;
2418
2419         spin_lock_bh(&jme->phy_lock);
2420         val = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_ADVERTISE);
2421         spin_unlock_bh(&jme->phy_lock);
2422
2423         ecmd->autoneg =
2424                 (val & (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM)) != 0;
2425 }
2426
2427 static int
2428 jme_set_pauseparam(struct net_device *netdev,
2429                         struct ethtool_pauseparam *ecmd)
2430 {
2431         struct jme_adapter *jme = netdev_priv(netdev);
2432         u32 val;
2433
2434         if (((jme->reg_txpfc & TXPFC_PF_EN) != 0) ^
2435                 (ecmd->tx_pause != 0)) {
2436
2437                 if (ecmd->tx_pause)
2438                         jme->reg_txpfc |= TXPFC_PF_EN;
2439                 else
2440                         jme->reg_txpfc &= ~TXPFC_PF_EN;
2441
2442                 jwrite32(jme, JME_TXPFC, jme->reg_txpfc);
2443         }
2444
2445         spin_lock_bh(&jme->rxmcs_lock);
2446         if (((jme->reg_rxmcs & RXMCS_FLOWCTRL) != 0) ^
2447                 (ecmd->rx_pause != 0)) {
2448
2449                 if (ecmd->rx_pause)
2450                         jme->reg_rxmcs |= RXMCS_FLOWCTRL;
2451                 else
2452                         jme->reg_rxmcs &= ~RXMCS_FLOWCTRL;
2453
2454                 jwrite32(jme, JME_RXMCS, jme->reg_rxmcs);
2455         }
2456         spin_unlock_bh(&jme->rxmcs_lock);
2457
2458         spin_lock_bh(&jme->phy_lock);
2459         val = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_ADVERTISE);
2460         if (((val & (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM)) != 0) ^
2461                 (ecmd->autoneg != 0)) {
2462
2463                 if (ecmd->autoneg)
2464                         val |= (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
2465                 else
2466                         val &= ~(ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
2467
2468                 jme_mdio_write(jme->dev, jme->mii_if.phy_id,
2469                                 MII_ADVERTISE, val);
2470         }
2471         spin_unlock_bh(&jme->phy_lock);
2472
2473         return 0;
2474 }
2475
2476 static void
2477 jme_get_wol(struct net_device *netdev,
2478                 struct ethtool_wolinfo *wol)
2479 {
2480         struct jme_adapter *jme = netdev_priv(netdev);
2481
2482         wol->supported = WAKE_MAGIC | WAKE_PHY;
2483
2484         wol->wolopts = 0;
2485
2486         if (jme->reg_pmcs & (PMCS_LFEN | PMCS_LREN))
2487                 wol->wolopts |= WAKE_PHY;
2488
2489         if (jme->reg_pmcs & PMCS_MFEN)
2490                 wol->wolopts |= WAKE_MAGIC;
2491
2492 }
2493
2494 static int
2495 jme_set_wol(struct net_device *netdev,
2496                 struct ethtool_wolinfo *wol)
2497 {
2498         struct jme_adapter *jme = netdev_priv(netdev);
2499
2500         if (wol->wolopts & (WAKE_MAGICSECURE |
2501                                 WAKE_UCAST |
2502                                 WAKE_MCAST |
2503                                 WAKE_BCAST |
2504                                 WAKE_ARP))
2505                 return -EOPNOTSUPP;
2506
2507         jme->reg_pmcs = 0;
2508
2509         if (wol->wolopts & WAKE_PHY)
2510                 jme->reg_pmcs |= PMCS_LFEN | PMCS_LREN;
2511
2512         if (wol->wolopts & WAKE_MAGIC)
2513                 jme->reg_pmcs |= PMCS_MFEN;
2514
2515         jwrite32(jme, JME_PMCS, jme->reg_pmcs);
2516
2517         return 0;
2518 }
2519
2520 static int
2521 jme_get_settings(struct net_device *netdev,
2522                      struct ethtool_cmd *ecmd)
2523 {
2524         struct jme_adapter *jme = netdev_priv(netdev);
2525         int rc;
2526
2527         spin_lock_bh(&jme->phy_lock);
2528         rc = mii_ethtool_gset(&(jme->mii_if), ecmd);
2529         spin_unlock_bh(&jme->phy_lock);
2530         return rc;
2531 }
2532
2533 static int
2534 jme_set_settings(struct net_device *netdev,
2535                      struct ethtool_cmd *ecmd)
2536 {
2537         struct jme_adapter *jme = netdev_priv(netdev);
2538         int rc, fdc = 0;
2539
2540         if (ecmd->speed == SPEED_1000 && ecmd->autoneg != AUTONEG_ENABLE)
2541                 return -EINVAL;
2542
2543         if (jme->mii_if.force_media &&
2544         ecmd->autoneg != AUTONEG_ENABLE &&
2545         (jme->mii_if.full_duplex != ecmd->duplex))
2546                 fdc = 1;
2547
2548         spin_lock_bh(&jme->phy_lock);
2549         rc = mii_ethtool_sset(&(jme->mii_if), ecmd);
2550         spin_unlock_bh(&jme->phy_lock);
2551
2552         if (!rc && fdc)
2553                 jme_reset_link(jme);
2554
2555         if (!rc) {
2556                 set_bit(JME_FLAG_SSET, &jme->flags);
2557                 jme->old_ecmd = *ecmd;
2558         }
2559
2560         return rc;
2561 }
2562
2563 static u32
2564 jme_get_link(struct net_device *netdev)
2565 {
2566         struct jme_adapter *jme = netdev_priv(netdev);
2567         return jread32(jme, JME_PHY_LINK) & PHY_LINK_UP;
2568 }
2569
2570 static u32
2571 jme_get_msglevel(struct net_device *netdev)
2572 {
2573         struct jme_adapter *jme = netdev_priv(netdev);
2574         return jme->msg_enable;
2575 }
2576
2577 static void
2578 jme_set_msglevel(struct net_device *netdev, u32 value)
2579 {
2580         struct jme_adapter *jme = netdev_priv(netdev);
2581         jme->msg_enable = value;
2582 }
2583
2584 static u32
2585 jme_get_rx_csum(struct net_device *netdev)
2586 {
2587         struct jme_adapter *jme = netdev_priv(netdev);
2588         return jme->reg_rxmcs & RXMCS_CHECKSUM;
2589 }
2590
2591 static int
2592 jme_set_rx_csum(struct net_device *netdev, u32 on)
2593 {
2594         struct jme_adapter *jme = netdev_priv(netdev);
2595
2596         spin_lock_bh(&jme->rxmcs_lock);
2597         if (on)
2598                 jme->reg_rxmcs |= RXMCS_CHECKSUM;
2599         else
2600                 jme->reg_rxmcs &= ~RXMCS_CHECKSUM;
2601         jwrite32(jme, JME_RXMCS, jme->reg_rxmcs);
2602         spin_unlock_bh(&jme->rxmcs_lock);
2603
2604         return 0;
2605 }
2606
2607 static int
2608 jme_set_tx_csum(struct net_device *netdev, u32 on)
2609 {
2610         struct jme_adapter *jme = netdev_priv(netdev);
2611
2612         if (on) {
2613                 set_bit(JME_FLAG_TXCSUM, &jme->flags);
2614                 if (netdev->mtu <= 1900)
2615                         netdev->features |= NETIF_F_HW_CSUM;
2616         } else {
2617                 clear_bit(JME_FLAG_TXCSUM, &jme->flags);
2618                 netdev->features &= ~NETIF_F_HW_CSUM;
2619         }
2620
2621         return 0;
2622 }
2623
2624 static int
2625 jme_set_tso(struct net_device *netdev, u32 on)
2626 {
2627         struct jme_adapter *jme = netdev_priv(netdev);
2628
2629         if (on) {
2630                 set_bit(JME_FLAG_TSO, &jme->flags);
2631                 if (netdev->mtu <= 1900)
2632                         netdev->features |= NETIF_F_TSO
2633 #ifdef NETIF_F_TSO6
2634                                 | NETIF_F_TSO6
2635 #endif
2636                                 ;
2637         } else {
2638                 clear_bit(JME_FLAG_TSO, &jme->flags);
2639                 netdev->features &= ~(NETIF_F_TSO
2640 #ifdef NETIF_F_TSO6
2641                                 | NETIF_F_TSO6
2642 #endif
2643                                 );
2644         }
2645
2646         return 0;
2647 }
2648
2649 static int
2650 jme_nway_reset(struct net_device *netdev)
2651 {
2652         struct jme_adapter *jme = netdev_priv(netdev);
2653         jme_restart_an(jme);
2654         return 0;
2655 }
2656
2657 static u8
2658 jme_smb_read(struct jme_adapter *jme, unsigned int addr)
2659 {
2660         u32 val;
2661         int to;
2662
2663         val = jread32(jme, JME_SMBCSR);
2664         to = JME_SMB_BUSY_TIMEOUT;
2665         while ((val & SMBCSR_BUSY) && --to) {
2666                 msleep(1);
2667                 val = jread32(jme, JME_SMBCSR);
2668         }
2669         if (!to) {
2670 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,33)
2671                 msg_hw(jme, "SMB Bus Busy.\n");
2672 #else
2673                 netif_err(jme, hw, jme->dev, "SMB Bus Busy.\n");
2674 #endif
2675                 return 0xFF;
2676         }
2677
2678         jwrite32(jme, JME_SMBINTF,
2679                 ((addr << SMBINTF_HWADDR_SHIFT) & SMBINTF_HWADDR) |
2680                 SMBINTF_HWRWN_READ |
2681                 SMBINTF_HWCMD);
2682
2683         val = jread32(jme, JME_SMBINTF);
2684         to = JME_SMB_BUSY_TIMEOUT;
2685         while ((val & SMBINTF_HWCMD) && --to) {
2686                 msleep(1);
2687                 val = jread32(jme, JME_SMBINTF);
2688         }
2689         if (!to) {
2690 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,33)
2691                 msg_hw(jme, "SMB Bus Busy.\n");
2692 #else
2693                 netif_err(jme, hw, jme->dev, "SMB Bus Busy.\n");
2694 #endif
2695                 return 0xFF;
2696         }
2697
2698         return (val & SMBINTF_HWDATR) >> SMBINTF_HWDATR_SHIFT;
2699 }
2700
2701 static void
2702 jme_smb_write(struct jme_adapter *jme, unsigned int addr, u8 data)
2703 {
2704         u32 val;
2705         int to;
2706
2707         val = jread32(jme, JME_SMBCSR);
2708         to = JME_SMB_BUSY_TIMEOUT;
2709         while ((val & SMBCSR_BUSY) && --to) {
2710                 msleep(1);
2711                 val = jread32(jme, JME_SMBCSR);
2712         }
2713         if (!to) {
2714 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,33)
2715                 msg_hw(jme, "SMB Bus Busy.\n");
2716 #else
2717                 netif_err(jme, hw, jme->dev, "SMB Bus Busy.\n");
2718 #endif
2719                 return;
2720         }
2721
2722         jwrite32(jme, JME_SMBINTF,
2723                 ((data << SMBINTF_HWDATW_SHIFT) & SMBINTF_HWDATW) |
2724                 ((addr << SMBINTF_HWADDR_SHIFT) & SMBINTF_HWADDR) |
2725                 SMBINTF_HWRWN_WRITE |
2726                 SMBINTF_HWCMD);
2727
2728         val = jread32(jme, JME_SMBINTF);
2729         to = JME_SMB_BUSY_TIMEOUT;
2730         while ((val & SMBINTF_HWCMD) && --to) {
2731                 msleep(1);
2732                 val = jread32(jme, JME_SMBINTF);
2733         }
2734         if (!to) {
2735 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,33)
2736                 msg_hw(jme, "SMB Bus Busy.\n");
2737 #else
2738                 netif_err(jme, hw, jme->dev, "SMB Bus Busy.\n");
2739 #endif
2740                 return;
2741         }
2742
2743         mdelay(2);
2744 }
2745
2746 static int
2747 jme_get_eeprom_len(struct net_device *netdev)
2748 {
2749         struct jme_adapter *jme = netdev_priv(netdev);
2750         u32 val;
2751         val = jread32(jme, JME_SMBCSR);
2752         return (val & SMBCSR_EEPROMD) ? JME_SMB_LEN : 0;
2753 }
2754
2755 static int
2756 jme_get_eeprom(struct net_device *netdev,
2757                 struct ethtool_eeprom *eeprom, u8 *data)
2758 {
2759         struct jme_adapter *jme = netdev_priv(netdev);
2760         int i, offset = eeprom->offset, len = eeprom->len;
2761
2762         /*
2763          * ethtool will check the boundary for us
2764          */
2765         eeprom->magic = JME_EEPROM_MAGIC;
2766         for (i = 0 ; i < len ; ++i)
2767                 data[i] = jme_smb_read(jme, i + offset);
2768
2769         return 0;
2770 }
2771
2772 static int
2773 jme_set_eeprom(struct net_device *netdev,
2774                 struct ethtool_eeprom *eeprom, u8 *data)
2775 {
2776         struct jme_adapter *jme = netdev_priv(netdev);
2777         int i, offset = eeprom->offset, len = eeprom->len;
2778
2779         if (eeprom->magic != JME_EEPROM_MAGIC)
2780                 return -EINVAL;
2781
2782         /*
2783          * ethtool will check the boundary for us
2784          */
2785         for (i = 0 ; i < len ; ++i)
2786                 jme_smb_write(jme, i + offset, data[i]);
2787
2788         return 0;
2789 }
2790
2791 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,18)
2792 static struct ethtool_ops jme_ethtool_ops = {
2793 #else
2794 static const struct ethtool_ops jme_ethtool_ops = {
2795 #endif
2796         .get_drvinfo            = jme_get_drvinfo,
2797         .get_regs_len           = jme_get_regs_len,
2798         .get_regs               = jme_get_regs,
2799         .get_coalesce           = jme_get_coalesce,
2800         .set_coalesce           = jme_set_coalesce,
2801         .get_pauseparam         = jme_get_pauseparam,
2802         .set_pauseparam         = jme_set_pauseparam,
2803         .get_wol                = jme_get_wol,
2804         .set_wol                = jme_set_wol,
2805         .get_settings           = jme_get_settings,
2806         .set_settings           = jme_set_settings,
2807         .get_link               = jme_get_link,
2808         .get_msglevel           = jme_get_msglevel,
2809         .set_msglevel           = jme_set_msglevel,
2810         .get_rx_csum            = jme_get_rx_csum,
2811         .set_rx_csum            = jme_set_rx_csum,
2812         .set_tx_csum            = jme_set_tx_csum,
2813         .set_tso                = jme_set_tso,
2814         .set_sg                 = ethtool_op_set_sg,
2815         .nway_reset             = jme_nway_reset,
2816         .get_eeprom_len         = jme_get_eeprom_len,
2817         .get_eeprom             = jme_get_eeprom,
2818         .set_eeprom             = jme_set_eeprom,
2819 };
2820
2821 static int
2822 jme_pci_dma64(struct pci_dev *pdev)
2823 {
2824         if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250 &&
2825 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,29)
2826             !pci_set_dma_mask(pdev, DMA_BIT_MASK(64))
2827 #else
2828             !pci_set_dma_mask(pdev, DMA_64BIT_MASK)
2829 #endif
2830            )
2831 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,29)
2832                 if (!pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)))
2833 #else
2834                 if (!pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK))
2835 #endif
2836                         return 1;
2837
2838         if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250 &&
2839 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,29)
2840             !pci_set_dma_mask(pdev, DMA_BIT_MASK(40))
2841 #else
2842             !pci_set_dma_mask(pdev, DMA_40BIT_MASK)
2843 #endif
2844            )
2845 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,29)
2846                 if (!pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(40)))
2847 #else
2848                 if (!pci_set_consistent_dma_mask(pdev, DMA_40BIT_MASK))
2849 #endif
2850                         return 1;
2851
2852 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,29)
2853         if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32)))
2854                 if (!pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)))
2855 #else
2856         if (!pci_set_dma_mask(pdev, DMA_32BIT_MASK))
2857                 if (!pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK))
2858 #endif
2859                         return 0;
2860
2861         return -1;
2862 }
2863
2864 static inline void
2865 jme_phy_init(struct jme_adapter *jme)
2866 {
2867         u16 reg26;
2868
2869         reg26 = jme_mdio_read(jme->dev, jme->mii_if.phy_id, 26);
2870         jme_mdio_write(jme->dev, jme->mii_if.phy_id, 26, reg26 | 0x1000);
2871 }
2872
2873 static inline void
2874 jme_check_hw_ver(struct jme_adapter *jme)
2875 {
2876         u32 chipmode;
2877
2878         chipmode = jread32(jme, JME_CHIPMODE);
2879
2880         jme->fpgaver = (chipmode & CM_FPGAVER_MASK) >> CM_FPGAVER_SHIFT;
2881         jme->chiprev = (chipmode & CM_CHIPREV_MASK) >> CM_CHIPREV_SHIFT;
2882 }
2883
2884 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,29)
2885 static const struct net_device_ops jme_netdev_ops = {
2886         .ndo_open               = jme_open,
2887         .ndo_stop               = jme_close,
2888         .ndo_validate_addr      = eth_validate_addr,
2889         .ndo_start_xmit         = jme_start_xmit,
2890         .ndo_set_mac_address    = jme_set_macaddr,
2891         .ndo_set_multicast_list = jme_set_multi,
2892         .ndo_change_mtu         = jme_change_mtu,
2893         .ndo_tx_timeout         = jme_tx_timeout,
2894         .ndo_vlan_rx_register   = jme_vlan_rx_register,
2895 };
2896 #endif
2897
2898 static int __devinit
2899 jme_init_one(struct pci_dev *pdev,
2900              const struct pci_device_id *ent)
2901 {
2902         int rc = 0, using_dac, i;
2903         struct net_device *netdev;
2904         struct jme_adapter *jme;
2905         u16 bmcr, bmsr;
2906         u32 apmc;
2907
2908         /*
2909          * set up PCI device basics
2910          */
2911         rc = pci_enable_device(pdev);
2912         if (rc) {
2913                 jeprintk(pdev, "Cannot enable PCI device.\n");
2914                 goto err_out;
2915         }
2916
2917         using_dac = jme_pci_dma64(pdev);
2918         if (using_dac < 0) {
2919                 jeprintk(pdev, "Cannot set PCI DMA Mask.\n");
2920                 rc = -EIO;
2921                 goto err_out_disable_pdev;
2922         }
2923
2924         if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
2925                 jeprintk(pdev, "No PCI resource region found.\n");
2926                 rc = -ENOMEM;
2927                 goto err_out_disable_pdev;
2928         }
2929
2930         rc = pci_request_regions(pdev, DRV_NAME);
2931         if (rc) {
2932                 jeprintk(pdev, "Cannot obtain PCI resource region.\n");
2933                 goto err_out_disable_pdev;
2934         }
2935
2936         pci_set_master(pdev);
2937
2938         /*
2939          * alloc and init net device
2940          */
2941         netdev = alloc_etherdev(sizeof(*jme));
2942         if (!netdev) {
2943                 jeprintk(pdev, "Cannot allocate netdev structure.\n");
2944                 rc = -ENOMEM;
2945                 goto err_out_release_regions;
2946         }
2947 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,29)
2948         netdev->netdev_ops = &jme_netdev_ops;
2949 #else
2950         netdev->open                    = jme_open;
2951         netdev->stop                    = jme_close;
2952         netdev->hard_start_xmit         = jme_start_xmit;
2953         netdev->set_mac_address         = jme_set_macaddr;
2954         netdev->set_multicast_list      = jme_set_multi;
2955         netdev->change_mtu              = jme_change_mtu;
2956         netdev->tx_timeout              = jme_tx_timeout;
2957         netdev->vlan_rx_register        = jme_vlan_rx_register;
2958 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,21)
2959         netdev->vlan_rx_kill_vid        = jme_vlan_rx_kill_vid;
2960 #endif
2961         NETDEV_GET_STATS(netdev, &jme_get_stats);
2962 #endif
2963         netdev->ethtool_ops             = &jme_ethtool_ops;
2964         netdev->watchdog_timeo          = TX_TIMEOUT;
2965         netdev->features                =       NETIF_F_HW_CSUM |
2966                                                 NETIF_F_SG |
2967                                                 NETIF_F_TSO |
2968 #ifdef NETIF_F_TSO6
2969                                                 NETIF_F_TSO6 |
2970 #endif
2971                                                 NETIF_F_HW_VLAN_TX |
2972                                                 NETIF_F_HW_VLAN_RX;
2973         if (using_dac)
2974                 netdev->features        |=      NETIF_F_HIGHDMA;
2975
2976         SET_NETDEV_DEV(netdev, &pdev->dev);
2977         pci_set_drvdata(pdev, netdev);
2978
2979         /*
2980          * init adapter info
2981          */
2982         jme = netdev_priv(netdev);
2983         jme->pdev = pdev;
2984         jme->dev = netdev;
2985         jme->jme_rx = netif_rx;
2986         jme->jme_vlan_rx = vlan_hwaccel_rx;
2987         jme->old_mtu = netdev->mtu = 1500;
2988         jme->phylink = 0;
2989         jme->tx_ring_size = 1 << 10;
2990         jme->tx_ring_mask = jme->tx_ring_size - 1;
2991         jme->tx_wake_threshold = 1 << 9;
2992         jme->rx_ring_size = 1 << 9;
2993         jme->rx_ring_mask = jme->rx_ring_size - 1;
2994         jme->msg_enable = JME_DEF_MSG_ENABLE;
2995         jme->regs = ioremap(pci_resource_start(pdev, 0),
2996                              pci_resource_len(pdev, 0));
2997         if (!(jme->regs)) {
2998                 jeprintk(pdev, "Mapping PCI resource region error.\n");
2999                 rc = -ENOMEM;
3000                 goto err_out_free_netdev;
3001         }
3002
3003         if (no_pseudohp) {
3004                 apmc = jread32(jme, JME_APMC) & ~JME_APMC_PSEUDO_HP_EN;
3005                 jwrite32(jme, JME_APMC, apmc);
3006         } else if (force_pseudohp) {
3007                 apmc = jread32(jme, JME_APMC) | JME_APMC_PSEUDO_HP_EN;
3008                 jwrite32(jme, JME_APMC, apmc);
3009         }
3010
3011         NETIF_NAPI_SET(netdev, &jme->napi, jme_poll, jme->rx_ring_size >> 2)
3012
3013         spin_lock_init(&jme->phy_lock);
3014         spin_lock_init(&jme->macaddr_lock);
3015         spin_lock_init(&jme->rxmcs_lock);
3016
3017         atomic_set(&jme->link_changing, 1);
3018         atomic_set(&jme->rx_cleaning, 1);
3019         atomic_set(&jme->tx_cleaning, 1);
3020         atomic_set(&jme->rx_empty, 1);
3021
3022         tasklet_init(&jme->pcc_task,
3023                      jme_pcc_tasklet,
3024                      (unsigned long) jme);
3025         tasklet_init(&jme->linkch_task,
3026                      jme_link_change_tasklet,
3027                      (unsigned long) jme);
3028         tasklet_init(&jme->txclean_task,
3029                      jme_tx_clean_tasklet,
3030                      (unsigned long) jme);
3031         tasklet_init(&jme->rxclean_task,
3032                      jme_rx_clean_tasklet,
3033                      (unsigned long) jme);
3034         tasklet_init(&jme->rxempty_task,
3035                      jme_rx_empty_tasklet,
3036                      (unsigned long) jme);
3037         tasklet_disable_nosync(&jme->linkch_task);
3038         tasklet_disable_nosync(&jme->txclean_task);
3039         tasklet_disable_nosync(&jme->rxclean_task);
3040         tasklet_disable_nosync(&jme->rxempty_task);
3041         jme->dpi.cur = PCC_P1;
3042
3043         jme->reg_ghc = 0;
3044         jme->reg_rxcs = RXCS_DEFAULT;
3045         jme->reg_rxmcs = RXMCS_DEFAULT;
3046         jme->reg_txpfc = 0;
3047         jme->reg_pmcs = PMCS_MFEN;
3048         set_bit(JME_FLAG_TXCSUM, &jme->flags);
3049         set_bit(JME_FLAG_TSO, &jme->flags);
3050
3051         /*
3052          * Get Max Read Req Size from PCI Config Space
3053          */
3054         pci_read_config_byte(pdev, PCI_DCSR_MRRS, &jme->mrrs);
3055         jme->mrrs &= PCI_DCSR_MRRS_MASK;
3056         switch (jme->mrrs) {
3057         case MRRS_128B:
3058                 jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_128B;
3059                 break;
3060         case MRRS_256B:
3061                 jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_256B;
3062                 break;
3063         default:
3064                 jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_512B;
3065                 break;
3066         }
3067
3068         /*
3069          * Must check before reset_mac_processor
3070          */
3071         jme_check_hw_ver(jme);
3072         jme->mii_if.dev = netdev;
3073         if (jme->fpgaver) {
3074                 jme->mii_if.phy_id = 0;
3075                 for (i = 1 ; i < 32 ; ++i) {
3076                         bmcr = jme_mdio_read(netdev, i, MII_BMCR);
3077                         bmsr = jme_mdio_read(netdev, i, MII_BMSR);
3078                         if (bmcr != 0xFFFFU && (bmcr != 0 || bmsr != 0)) {
3079                                 jme->mii_if.phy_id = i;
3080                                 break;
3081                         }
3082                 }
3083
3084                 if (!jme->mii_if.phy_id) {
3085                         rc = -EIO;
3086                         jeprintk(pdev, "Can not find phy_id.\n");
3087                          goto err_out_unmap;
3088                 }
3089
3090                 jme->reg_ghc |= GHC_LINK_POLL;
3091         } else {
3092                 jme->mii_if.phy_id = 1;
3093         }
3094         if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250)
3095                 jme->mii_if.supports_gmii = true;
3096         else
3097                 jme->mii_if.supports_gmii = false;
3098         jme->mii_if.mdio_read = jme_mdio_read;
3099         jme->mii_if.mdio_write = jme_mdio_write;
3100
3101         jme_clear_pm(jme);
3102         jme_set_phyfifoa(jme);
3103         pci_read_config_byte(pdev, PCI_REVISION_ID, &jme->rev);
3104         if (!jme->fpgaver)
3105                 jme_phy_init(jme);
3106         jme_phy_off(jme);
3107
3108         /*
3109          * Reset MAC processor and reload EEPROM for MAC Address
3110          */
3111         jme_reset_mac_processor(jme);
3112         rc = jme_reload_eeprom(jme);
3113         if (rc) {
3114                 jeprintk(pdev,
3115                         "Reload eeprom for reading MAC Address error.\n");
3116                 goto err_out_unmap;
3117         }
3118         jme_load_macaddr(netdev);
3119
3120         /*
3121          * Tell stack that we are not ready to work until open()
3122          */
3123         netif_carrier_off(netdev);
3124         netif_stop_queue(netdev);
3125
3126         /*
3127          * Register netdev
3128          */
3129         rc = register_netdev(netdev);
3130         if (rc) {
3131                 jeprintk(pdev, "Cannot register net device.\n");
3132                 goto err_out_unmap;
3133         }
3134
3135 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,33)
3136         msg_probe(jme, "%s%s ver:%x rev:%x "
3137                         "macaddr: %02x:%02x:%02x:%02x:%02x:%02x\n",
3138                 (jme->pdev->device == PCI_DEVICE_ID_JMICRON_JMC250) ?
3139                         "JMC250 Gigabit Ethernet" :
3140                         (jme->pdev->device == PCI_DEVICE_ID_JMICRON_JMC260) ?
3141                                 "JMC260 Fast Ethernet" : "Unknown",
3142                 (jme->fpgaver != 0) ? " (FPGA)" : "",
3143                 (jme->fpgaver != 0) ? jme->fpgaver : jme->chiprev,
3144                 jme->rev,
3145                 netdev->dev_addr[0],
3146                 netdev->dev_addr[1],
3147                 netdev->dev_addr[2],
3148                 netdev->dev_addr[3],
3149                 netdev->dev_addr[4],
3150                 netdev->dev_addr[5]);
3151 #else
3152         netif_info(jme, probe, jme->dev, "%s%s ver:%x rev:%x macaddr:%pM\n",
3153                    (jme->pdev->device == PCI_DEVICE_ID_JMICRON_JMC250) ?
3154                    "JMC250 Gigabit Ethernet" :
3155                    (jme->pdev->device == PCI_DEVICE_ID_JMICRON_JMC260) ?
3156                    "JMC260 Fast Ethernet" : "Unknown",
3157                    (jme->fpgaver != 0) ? " (FPGA)" : "",
3158                    (jme->fpgaver != 0) ? jme->fpgaver : jme->chiprev,
3159                    jme->rev, netdev->dev_addr);
3160 #endif
3161
3162         return 0;
3163
3164 err_out_unmap:
3165         iounmap(jme->regs);
3166 err_out_free_netdev:
3167         pci_set_drvdata(pdev, NULL);
3168         free_netdev(netdev);
3169 err_out_release_regions:
3170         pci_release_regions(pdev);
3171 err_out_disable_pdev:
3172         pci_disable_device(pdev);
3173 err_out:
3174         return rc;
3175 }
3176
3177 static void __devexit
3178 jme_remove_one(struct pci_dev *pdev)
3179 {
3180         struct net_device *netdev = pci_get_drvdata(pdev);
3181         struct jme_adapter *jme = netdev_priv(netdev);
3182
3183         unregister_netdev(netdev);
3184         iounmap(jme->regs);
3185         pci_set_drvdata(pdev, NULL);
3186         free_netdev(netdev);
3187         pci_release_regions(pdev);
3188         pci_disable_device(pdev);
3189
3190 }
3191
3192 #ifdef CONFIG_PM
3193 static int
3194 jme_suspend(struct pci_dev *pdev, pm_message_t state)
3195 {
3196         struct net_device *netdev = pci_get_drvdata(pdev);
3197         struct jme_adapter *jme = netdev_priv(netdev);
3198
3199         atomic_dec(&jme->link_changing);
3200
3201         netif_device_detach(netdev);
3202         netif_stop_queue(netdev);
3203         jme_stop_irq(jme);
3204
3205         tasklet_disable(&jme->txclean_task);
3206         tasklet_disable(&jme->rxclean_task);
3207         tasklet_disable(&jme->rxempty_task);
3208
3209         if (netif_carrier_ok(netdev)) {
3210                 if (test_bit(JME_FLAG_POLL, &jme->flags))
3211                         jme_polling_mode(jme);
3212
3213                 jme_stop_pcc_timer(jme);
3214                 jme_reset_ghc_speed(jme);
3215                 jme_disable_rx_engine(jme);
3216                 jme_disable_tx_engine(jme);
3217                 jme_reset_mac_processor(jme);
3218                 jme_free_rx_resources(jme);
3219                 jme_free_tx_resources(jme);
3220                 netif_carrier_off(netdev);
3221                 jme->phylink = 0;
3222         }
3223
3224         tasklet_enable(&jme->txclean_task);
3225         tasklet_hi_enable(&jme->rxclean_task);
3226         tasklet_hi_enable(&jme->rxempty_task);
3227
3228         pci_save_state(pdev);
3229         if (jme->reg_pmcs) {
3230                 jme_set_100m_half(jme);
3231
3232                 if (jme->reg_pmcs & (PMCS_LFEN | PMCS_LREN))
3233                         jme_wait_link(jme);
3234
3235                 jwrite32(jme, JME_PMCS, jme->reg_pmcs);
3236
3237                 pci_enable_wake(pdev, PCI_D3cold, true);
3238         } else {
3239                 jme_phy_off(jme);
3240         }
3241         pci_set_power_state(pdev, PCI_D3cold);
3242
3243         return 0;
3244 }
3245
3246 static int
3247 jme_resume(struct pci_dev *pdev)
3248 {
3249         struct net_device *netdev = pci_get_drvdata(pdev);
3250         struct jme_adapter *jme = netdev_priv(netdev);
3251
3252         jme_clear_pm(jme);
3253         pci_restore_state(pdev);
3254
3255         if (test_bit(JME_FLAG_SSET, &jme->flags))
3256                 jme_set_settings(netdev, &jme->old_ecmd);
3257         else
3258                 jme_reset_phy_processor(jme);
3259
3260         jme_start_irq(jme);
3261         netif_device_attach(netdev);
3262
3263         atomic_inc(&jme->link_changing);
3264
3265         jme_reset_link(jme);
3266
3267         return 0;
3268 }
3269 #endif
3270
3271 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,24)
3272 static struct pci_device_id jme_pci_tbl[] = {
3273 #else
3274 static DEFINE_PCI_DEVICE_TABLE(jme_pci_tbl) = {
3275 #endif
3276         { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMC250) },
3277         { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMC260) },
3278         { }
3279 };
3280
3281 static struct pci_driver jme_driver = {
3282         .name           = DRV_NAME,
3283         .id_table       = jme_pci_tbl,
3284         .probe          = jme_init_one,
3285         .remove         = __devexit_p(jme_remove_one),
3286 #ifdef CONFIG_PM
3287         .suspend        = jme_suspend,
3288         .resume         = jme_resume,
3289 #endif /* CONFIG_PM */
3290 };
3291
3292 static int __init
3293 jme_init_module(void)
3294 {
3295         printk(KERN_INFO PFX "JMicron JMC2XX ethernet "
3296                "driver version %s\n", DRV_VERSION);
3297         return pci_register_driver(&jme_driver);
3298 }
3299
3300 static void __exit
3301 jme_cleanup_module(void)
3302 {
3303         pci_unregister_driver(&jme_driver);
3304 }
3305
3306 module_init(jme_init_module);
3307 module_exit(jme_cleanup_module);
3308
3309 MODULE_AUTHOR("Guo-Fu Tseng <cooldavid@cooldavid.org>");
3310 MODULE_DESCRIPTION("JMicron JMC2x0 PCI Express Ethernet driver");
3311 MODULE_LICENSE("GPL");
3312 MODULE_VERSION(DRV_VERSION);
3313 MODULE_DEVICE_TABLE(pci, jme_pci_tbl);
3314