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  * Copyright (c) 2009 - 2010 Guo-Fu Tseng <cooldavid@cooldavid.org>
   7  *
   8  * Author: Guo-Fu Tseng <cooldavid@cooldavid.org>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  22  *
  23  */
  24
  25 #include <linux/version.h>
  26 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,28)
  27 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  28 #endif
  29
  30 #include <linux/module.h>
  31 #include <linux/kernel.h>
  32 #include <linux/pci.h>
  33 #include <linux/netdevice.h>
  34 #include <linux/etherdevice.h>
  35 #include <linux/ethtool.h>
  36 #include <linux/mii.h>
  37 #include <linux/crc32.h>
  38 #include <linux/delay.h>
  39 #include <linux/spinlock.h>
  40 #include <linux/in.h>
  41 #include <linux/ip.h>
  42 #include <linux/ipv6.h>
  43 #include <linux/tcp.h>
  44 #include <linux/udp.h>
  45 #include <linux/if_vlan.h>
  46 #include <linux/slab.h>
  47 #include <net/ip6_checksum.h>
  48 #include "jme.h"
  49
  50 static int force_pseudohp = -1;
  51 static int no_pseudohp = -1;
  52 static int no_extplug = -1;
  53 module_param(force_pseudohp, int, 0);
  54 MODULE_PARM_DESC(force_pseudohp,
  55         "Enable pseudo hot-plug feature manually by driver instead of BIOS.");
  56 module_param(no_pseudohp, int, 0);
  57 MODULE_PARM_DESC(no_pseudohp, "Disable pseudo hot-plug feature.");
  58 module_param(no_extplug, int, 0);
  59 MODULE_PARM_DESC(no_extplug,
  60         "Do not use external plug signal for pseudo hot-plug.");
  61
  62 static int
  63 jme_mdio_read(struct net_device *netdev, int phy, int reg)
  64 {
  65         struct jme_adapter *jme = netdev_priv(netdev);
  66         int i, val, again = (reg == MII_BMSR) ? 1 : 0;
  67
  68 read_again:
  69         jwrite32(jme, JME_SMI, SMI_OP_REQ |
  70                                 smi_phy_addr(phy) |
  71                                 smi_reg_addr(reg));
  72
  73         wmb();
  74         for (i = JME_PHY_TIMEOUT * 50 ; i > 0 ; --i) {
  75                 udelay(20);
  76                 val = jread32(jme, JME_SMI);
  77                 if ((val & SMI_OP_REQ) == 0)
  78                         break;
  79         }
  80
  81         if (i == 0) {
  82                 pr_err("phy(%d) read timeout : %d\n", phy, reg);
  83                 return 0;
  84         }
  85
  86         if (again--)
  87                 goto read_again;
  88
  89         return (val & SMI_DATA_MASK) >> SMI_DATA_SHIFT;
  90 }
  91
  92 static void
  93 jme_mdio_write(struct net_device *netdev,
  94                                 int phy, int reg, int val)
  95 {
  96         struct jme_adapter *jme = netdev_priv(netdev);
  97         int i;
  98
  99         jwrite32(jme, JME_SMI, SMI_OP_WRITE | SMI_OP_REQ |
 100                 ((val << SMI_DATA_SHIFT) & SMI_DATA_MASK) |
 101                 smi_phy_addr(phy) | smi_reg_addr(reg));
 102
 103         wmb();
 104         for (i = JME_PHY_TIMEOUT * 50 ; i > 0 ; --i) {
 105                 udelay(20);
 106                 if ((jread32(jme, JME_SMI) & SMI_OP_REQ) == 0)
 107                         break;
 108         }
 109
 110         if (i == 0)
 111                 pr_err("phy(%d) write timeout : %d\n", phy, reg);
 112 }
 113
 114 static inline void
 115 jme_reset_phy_processor(struct jme_adapter *jme)
 116 {
 117         u32 val;
 118
 119         jme_mdio_write(jme->dev,
 120                         jme->mii_if.phy_id,
 121                         MII_ADVERTISE, ADVERTISE_ALL |
 122                         ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
 123
 124         if (jme->pdev->device == PCI_DEVICE_ID_JMICRON_JMC250)
 125                 jme_mdio_write(jme->dev,
 126                                 jme->mii_if.phy_id,
 127                                 MII_CTRL1000,
 128                                 ADVERTISE_1000FULL | ADVERTISE_1000HALF);
 129
 130         val = jme_mdio_read(jme->dev,
 131                                 jme->mii_if.phy_id,
 132                                 MII_BMCR);
 133
 134         jme_mdio_write(jme->dev,
 135                         jme->mii_if.phy_id,
 136                         MII_BMCR, val | BMCR_RESET);
 137 }
 138
 139 static void
 140 jme_setup_wakeup_frame(struct jme_adapter *jme,
 141                        const u32 *mask, u32 crc, int fnr)
 142 {
 143         int i;
 144
 145         /*
 146          * Setup CRC pattern
 147          */
 148         jwrite32(jme, JME_WFOI, WFOI_CRC_SEL | (fnr & WFOI_FRAME_SEL));
 149         wmb();
 150         jwrite32(jme, JME_WFODP, crc);
 151         wmb();
 152
 153         /*
 154          * Setup Mask
 155          */
 156         for (i = 0 ; i < WAKEUP_FRAME_MASK_DWNR ; ++i) {
 157                 jwrite32(jme, JME_WFOI,
 158                                 ((i << WFOI_MASK_SHIFT) & WFOI_MASK_SEL) |
 159                                 (fnr & WFOI_FRAME_SEL));
 160                 wmb();
 161                 jwrite32(jme, JME_WFODP, mask[i]);
 162                 wmb();
 163         }
 164 }
 165
 166 static inline void
 167 jme_reset_mac_processor(struct jme_adapter *jme)
 168 {
 169         static const u32 mask[WAKEUP_FRAME_MASK_DWNR] = {0, 0, 0, 0};
 170         u32 crc = 0xCDCDCDCD;
 171         u32 gpreg0;
 172         int i;
 173
 174         jwrite32(jme, JME_GHC, jme->reg_ghc | GHC_SWRST);
 175         udelay(2);
 176         jwrite32(jme, JME_GHC, jme->reg_ghc);
 177
 178         jwrite32(jme, JME_RXDBA_LO, 0x00000000);
 179         jwrite32(jme, JME_RXDBA_HI, 0x00000000);
 180         jwrite32(jme, JME_RXQDC, 0x00000000);
 181         jwrite32(jme, JME_RXNDA, 0x00000000);
 182         jwrite32(jme, JME_TXDBA_LO, 0x00000000);
 183         jwrite32(jme, JME_TXDBA_HI, 0x00000000);
 184         jwrite32(jme, JME_TXQDC, 0x00000000);
 185         jwrite32(jme, JME_TXNDA, 0x00000000);
 186
 187         jwrite32(jme, JME_RXMCHT_LO, 0x00000000);
 188         jwrite32(jme, JME_RXMCHT_HI, 0x00000000);
 189         for (i = 0 ; i < WAKEUP_FRAME_NR ; ++i)
 190                 jme_setup_wakeup_frame(jme, mask, crc, i);
 191         if (jme->fpgaver)
 192                 gpreg0 = GPREG0_DEFAULT | GPREG0_LNKINTPOLL;
 193         else
 194                 gpreg0 = GPREG0_DEFAULT;
 195         jwrite32(jme, JME_GPREG0, gpreg0);
 196         jwrite32(jme, JME_GPREG1, GPREG1_DEFAULT);
 197 }
 198
 199 static inline void
 200 jme_reset_ghc_speed(struct jme_adapter *jme)
 201 {
 202         jme->reg_ghc &= ~(GHC_SPEED_1000M | GHC_DPX);
 203         jwrite32(jme, JME_GHC, jme->reg_ghc);
 204 }
 205
 206 static inline void
 207 jme_clear_pm(struct jme_adapter *jme)
 208 {
 209         jwrite32(jme, JME_PMCS, 0xFFFF0000 | jme->reg_pmcs);
 210         pci_set_power_state(jme->pdev, PCI_D0);
 211         pci_enable_wake(jme->pdev, PCI_D0, false);
 212 }
 213
 214 static int
 215 jme_reload_eeprom(struct jme_adapter *jme)
 216 {
 217         u32 val;
 218         int i;
 219
 220         val = jread32(jme, JME_SMBCSR);
 221
 222         if (val & SMBCSR_EEPROMD) {
 223                 val |= SMBCSR_CNACK;
 224                 jwrite32(jme, JME_SMBCSR, val);
 225                 val |= SMBCSR_RELOAD;
 226                 jwrite32(jme, JME_SMBCSR, val);
 227                 mdelay(12);
 228
 229                 for (i = JME_EEPROM_RELOAD_TIMEOUT; i > 0; --i) {
 230                         mdelay(1);
 231                         if ((jread32(jme, JME_SMBCSR) & SMBCSR_RELOAD) == 0)
 232                                 break;
 233                 }
 234
 235                 if (i == 0) {
 236                         pr_err("eeprom reload timeout\n");
 237                         return -EIO;
 238                 }
 239         }
 240
 241         return 0;
 242 }
 243
 244 static void
 245 jme_load_macaddr(struct net_device *netdev)
 246 {
 247         struct jme_adapter *jme = netdev_priv(netdev);
 248         unsigned char macaddr[6];
 249         u32 val;
 250
 251         spin_lock_bh(&jme->macaddr_lock);
 252         val = jread32(jme, JME_RXUMA_LO);
 253         macaddr[0] = (val >>  0) & 0xFF;
 254         macaddr[1] = (val >>  8) & 0xFF;
 255         macaddr[2] = (val >> 16) & 0xFF;
 256         macaddr[3] = (val >> 24) & 0xFF;
 257         val = jread32(jme, JME_RXUMA_HI);
 258         macaddr[4] = (val >>  0) & 0xFF;
 259         macaddr[5] = (val >>  8) & 0xFF;
 260         memcpy(netdev->dev_addr, macaddr, 6);
 261         spin_unlock_bh(&jme->macaddr_lock);
 262 }
 263
 264 static inline void
 265 jme_set_rx_pcc(struct jme_adapter *jme, int p)
 266 {
 267         switch (p) {
 268         case PCC_OFF:
 269                 jwrite32(jme, JME_PCCRX0,
 270                         ((PCC_OFF_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
 271                         ((PCC_OFF_CNT << PCCRX_SHIFT) & PCCRX_MASK));
 272                 break;
 273         case PCC_P1:
 274                 jwrite32(jme, JME_PCCRX0,
 275                         ((PCC_P1_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
 276                         ((PCC_P1_CNT << PCCRX_SHIFT) & PCCRX_MASK));
 277                 break;
 278         case PCC_P2:
 279                 jwrite32(jme, JME_PCCRX0,
 280                         ((PCC_P2_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
 281                         ((PCC_P2_CNT << PCCRX_SHIFT) & PCCRX_MASK));
 282                 break;
 283         case PCC_P3:
 284                 jwrite32(jme, JME_PCCRX0,
 285                         ((PCC_P3_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
 286                         ((PCC_P3_CNT << PCCRX_SHIFT) & PCCRX_MASK));
 287                 break;
 288         default:
 289                 break;
 290         }
 291         wmb();
 292
 293         if (!(test_bit(JME_FLAG_POLL, &jme->flags)))
 294                 netif_info(jme, rx_status, jme->dev, "Switched to PCC_P%d\n", p);
 295 }
 296
 297 static void
 298 jme_start_irq(struct jme_adapter *jme)
 299 {
 300         register struct dynpcc_info *dpi = &(jme->dpi);
 301
 302         jme_set_rx_pcc(jme, PCC_P1);
 303         dpi->cur                = PCC_P1;
 304         dpi->attempt            = PCC_P1;
 305         dpi->cnt                = 0;
 306
 307         jwrite32(jme, JME_PCCTX,
 308                         ((PCC_TX_TO << PCCTXTO_SHIFT) & PCCTXTO_MASK) |
 309                         ((PCC_TX_CNT << PCCTX_SHIFT) & PCCTX_MASK) |
 310                         PCCTXQ0_EN
 311                 );
 312
 313         /*
 314          * Enable Interrupts
 315          */
 316         jwrite32(jme, JME_IENS, INTR_ENABLE);
 317 }
 318
 319 static inline void
 320 jme_stop_irq(struct jme_adapter *jme)
 321 {
 322         /*
 323          * Disable Interrupts
 324          */
 325         jwrite32f(jme, JME_IENC, INTR_ENABLE);
 326 }
 327
 328 static u32
 329 jme_linkstat_from_phy(struct jme_adapter *jme)
 330 {
 331         u32 phylink, bmsr;
 332
 333         phylink = jme_mdio_read(jme->dev, jme->mii_if.phy_id, 17);
 334         bmsr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMSR);
 335         if (bmsr & BMSR_ANCOMP)
 336                 phylink |= PHY_LINK_AUTONEG_COMPLETE;
 337
 338         return phylink;
 339 }
 340
 341 static inline void
 342 jme_set_phyfifo_5level(struct jme_adapter *jme)
 343 {
 344         jme_mdio_write(jme->dev, jme->mii_if.phy_id, 27, 0x0004);
 345 }
 346
 347 static inline void
 348 jme_set_phyfifo_8level(struct jme_adapter *jme)
 349 {
 350         jme_mdio_write(jme->dev, jme->mii_if.phy_id, 27, 0x0000);
 351 }
 352
 353 static int
 354 jme_check_link(struct net_device *netdev, int testonly)
 355 {
 356         struct jme_adapter *jme = netdev_priv(netdev);
 357         u32 phylink, ghc, cnt = JME_SPDRSV_TIMEOUT, bmcr, gpreg1;
 358         char linkmsg[64];
 359         int rc = 0;
 360
 361         linkmsg[0] = '\0';
 362
 363         if (jme->fpgaver)
 364                 phylink = jme_linkstat_from_phy(jme);
 365         else
 366                 phylink = jread32(jme, JME_PHY_LINK);
 367
 368         if (phylink & PHY_LINK_UP) {
 369                 if (!(phylink & PHY_LINK_AUTONEG_COMPLETE)) {
 370                         /*
 371                          * If we did not enable AN
 372                          * Speed/Duplex Info should be obtained from SMI
 373                          */
 374                         phylink = PHY_LINK_UP;
 375
 376                         bmcr = jme_mdio_read(jme->dev,
 377                                                 jme->mii_if.phy_id,
 378                                                 MII_BMCR);
 379
 380                         phylink |= ((bmcr & BMCR_SPEED1000) &&
 381                                         (bmcr & BMCR_SPEED100) == 0) ?
 382                                         PHY_LINK_SPEED_1000M :
 383                                         (bmcr & BMCR_SPEED100) ?
 384                                         PHY_LINK_SPEED_100M :
 385                                         PHY_LINK_SPEED_10M;
 386
 387                         phylink |= (bmcr & BMCR_FULLDPLX) ?
 388                                          PHY_LINK_DUPLEX : 0;
 389
 390                         strcat(linkmsg, "Forced: ");
 391                 } else {
 392                         /*
 393                          * Keep polling for speed/duplex resolve complete
 394                          */
 395                         while (!(phylink & PHY_LINK_SPEEDDPU_RESOLVED) &&
 396                                 --cnt) {
 397
 398                                 udelay(1);
 399
 400                                 if (jme->fpgaver)
 401                                         phylink = jme_linkstat_from_phy(jme);
 402                                 else
 403                                         phylink = jread32(jme, JME_PHY_LINK);
 404                         }
 405                         if (!cnt)
 406                                 pr_err("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                         jwrite32(jme, JME_TXTRHD, TXTRHD_FULLDUPLEX);
 446                         ghc |= GHC_DPX;
 447                 } else {
 448                         jwrite32(jme, JME_TXMCS, TXMCS_DEFAULT |
 449                                                 TXMCS_BACKOFF |
 450                                                 TXMCS_CARRIERSENSE |
 451                                                 TXMCS_COLLISION);
 452                         jwrite32(jme, JME_TXTRHD, TXTRHD_HALFDUPLEX);
 453                 }
 454
 455                 gpreg1 = GPREG1_DEFAULT;
 456                 if (is_buggy250(jme->pdev->device, jme->chiprev)) {
 457                         if (!(phylink & PHY_LINK_DUPLEX))
 458                                 gpreg1 |= GPREG1_HALFMODEPATCH;
 459                         switch (phylink & PHY_LINK_SPEED_MASK) {
 460                         case PHY_LINK_SPEED_10M:
 461                                 jme_set_phyfifo_8level(jme);
 462                                 gpreg1 |= GPREG1_RSSPATCH;
 463                                 break;
 464                         case PHY_LINK_SPEED_100M:
 465                                 jme_set_phyfifo_5level(jme);
 466                                 gpreg1 |= GPREG1_RSSPATCH;
 467                                 break;
 468                         case PHY_LINK_SPEED_1000M:
 469                                 jme_set_phyfifo_8level(jme);
 470                                 break;
 471                         default:
 472                                 break;
 473                         }
 474                 }
 475
 476                 jwrite32(jme, JME_GPREG1, gpreg1);
 477                 jwrite32(jme, JME_GHC, ghc);
 478                 jme->reg_ghc = ghc;
 479
 480                 strcat(linkmsg, (phylink & PHY_LINK_DUPLEX) ?
 481                                         "Full-Duplex, " :
 482                                         "Half-Duplex, ");
 483                 strcat(linkmsg, (phylink & PHY_LINK_MDI_STAT) ?
 484                                         "MDI-X" :
 485                                         "MDI");
 486                 netif_info(jme, link, jme->dev, "Link is up at %s\n", linkmsg);
 487                 netif_carrier_on(netdev);
 488         } else {
 489                 if (testonly)
 490                         goto out;
 491
 492                 netif_info(jme, link, jme->dev, "Link is down\n");
 493                 jme->phylink = 0;
 494                 netif_carrier_off(netdev);
 495         }
 496
 497 out:
 498         return rc;
 499 }
 500
 501 static int
 502 jme_setup_tx_resources(struct jme_adapter *jme)
 503 {
 504         struct jme_ring *txring = &(jme->txring[0]);
 505
 506         txring->alloc = dma_alloc_coherent(&(jme->pdev->dev),
 507                                    TX_RING_ALLOC_SIZE(jme->tx_ring_size),
 508                                    &(txring->dmaalloc),
 509                                    GFP_ATOMIC);
 510
 511         if (!txring->alloc)
 512                 goto err_set_null;
 513
 514         /*
 515          * 16 Bytes align
 516          */
 517         txring->desc            = (void *)ALIGN((unsigned long)(txring->alloc),
 518                                                 RING_DESC_ALIGN);
 519         txring->dma             = ALIGN(txring->dmaalloc, RING_DESC_ALIGN);
 520         txring->next_to_use     = 0;
 521         atomic_set(&txring->next_to_clean, 0);
 522         atomic_set(&txring->nr_free, jme->tx_ring_size);
 523
 524         txring->bufinf          = kmalloc(sizeof(struct jme_buffer_info) *
 525                                         jme->tx_ring_size, GFP_ATOMIC);
 526         if (unlikely(!(txring->bufinf)))
 527                 goto err_free_txring;
 528
 529         /*
 530          * Initialize Transmit Descriptors
 531          */
 532         memset(txring->alloc, 0, TX_RING_ALLOC_SIZE(jme->tx_ring_size));
 533         memset(txring->bufinf, 0,
 534                 sizeof(struct jme_buffer_info) * jme->tx_ring_size);
 535
 536         return 0;
 537
 538 err_free_txring:
 539         dma_free_coherent(&(jme->pdev->dev),
 540                           TX_RING_ALLOC_SIZE(jme->tx_ring_size),
 541                           txring->alloc,
 542                           txring->dmaalloc);
 543
 544 err_set_null:
 545         txring->desc = NULL;
 546         txring->dmaalloc = 0;
 547         txring->dma = 0;
 548         txring->bufinf = NULL;
 549
 550         return -ENOMEM;
 551 }
 552
 553 static void
 554 jme_free_tx_resources(struct jme_adapter *jme)
 555 {
 556         int i;
 557         struct jme_ring *txring = &(jme->txring[0]);
 558         struct jme_buffer_info *txbi;
 559
 560         if (txring->alloc) {
 561                 if (txring->bufinf) {
 562                         for (i = 0 ; i < jme->tx_ring_size ; ++i) {
 563                                 txbi = txring->bufinf + i;
 564                                 if (txbi->skb) {
 565                                         dev_kfree_skb(txbi->skb);
 566                                         txbi->skb = NULL;
 567                                 }
 568                                 txbi->mapping           = 0;
 569                                 txbi->len               = 0;
 570                                 txbi->nr_desc           = 0;
 571                                 txbi->start_xmit        = 0;
 572                         }
 573                         kfree(txring->bufinf);
 574                 }
 575
 576                 dma_free_coherent(&(jme->pdev->dev),
 577                                   TX_RING_ALLOC_SIZE(jme->tx_ring_size),
 578                                   txring->alloc,
 579                                   txring->dmaalloc);
 580
 581                 txring->alloc           = NULL;
 582                 txring->desc            = NULL;
 583                 txring->dmaalloc        = 0;
 584                 txring->dma             = 0;
 585                 txring->bufinf          = NULL;
 586         }
 587         txring->next_to_use     = 0;
 588         atomic_set(&txring->next_to_clean, 0);
 589         atomic_set(&txring->nr_free, 0);
 590 }
 591
 592 static inline void
 593 jme_enable_tx_engine(struct jme_adapter *jme)
 594 {
 595         /*
 596          * Select Queue 0
 597          */
 598         jwrite32(jme, JME_TXCS, TXCS_DEFAULT | TXCS_SELECT_QUEUE0);
 599         wmb();
 600
 601         /*
 602          * Setup TX Queue 0 DMA Bass Address
 603          */
 604         jwrite32(jme, JME_TXDBA_LO, (__u64)jme->txring[0].dma & 0xFFFFFFFFUL);
 605         jwrite32(jme, JME_TXDBA_HI, (__u64)(jme->txring[0].dma) >> 32);
 606         jwrite32(jme, JME_TXNDA, (__u64)jme->txring[0].dma & 0xFFFFFFFFUL);
 607
 608         /*
 609          * Setup TX Descptor Count
 610          */
 611         jwrite32(jme, JME_TXQDC, jme->tx_ring_size);
 612
 613         /*
 614          * Enable TX Engine
 615          */
 616         wmb();
 617         jwrite32(jme, JME_TXCS, jme->reg_txcs |
 618                                 TXCS_SELECT_QUEUE0 |
 619                                 TXCS_ENABLE);
 620
 621 }
 622
 623 static inline void
 624 jme_restart_tx_engine(struct jme_adapter *jme)
 625 {
 626         /*
 627          * Restart TX Engine
 628          */
 629         jwrite32(jme, JME_TXCS, jme->reg_txcs |
 630                                 TXCS_SELECT_QUEUE0 |
 631                                 TXCS_ENABLE);
 632 }
 633
 634 static inline void
 635 jme_disable_tx_engine(struct jme_adapter *jme)
 636 {
 637         int i;
 638         u32 val;
 639
 640         /*
 641          * Disable TX Engine
 642          */
 643         jwrite32(jme, JME_TXCS, jme->reg_txcs | TXCS_SELECT_QUEUE0);
 644         wmb();
 645
 646         val = jread32(jme, JME_TXCS);
 647         for (i = JME_TX_DISABLE_TIMEOUT ; (val & TXCS_ENABLE) && i > 0 ; --i) {
 648                 mdelay(1);
 649                 val = jread32(jme, JME_TXCS);
 650                 rmb();
 651         }
 652
 653         if (!i)
 654                 pr_err("Disable TX engine timeout\n");
 655 }
 656
 657 static void
 658 jme_set_clean_rxdesc(struct jme_adapter *jme, int i)
 659 {
 660         struct jme_ring *rxring = &(jme->rxring[0]);
 661         register struct rxdesc *rxdesc = rxring->desc;
 662         struct jme_buffer_info *rxbi = rxring->bufinf;
 663         rxdesc += i;
 664         rxbi += i;
 665
 666         rxdesc->dw[0] = 0;
 667         rxdesc->dw[1] = 0;
 668         rxdesc->desc1.bufaddrh  = cpu_to_le32((__u64)rxbi->mapping >> 32);
 669         rxdesc->desc1.bufaddrl  = cpu_to_le32(
 670                                         (__u64)rxbi->mapping & 0xFFFFFFFFUL);
 671         rxdesc->desc1.datalen   = cpu_to_le16(rxbi->len);
 672         if (jme->dev->features & NETIF_F_HIGHDMA)
 673                 rxdesc->desc1.flags = RXFLAG_64BIT;
 674         wmb();
 675         rxdesc->desc1.flags     |= RXFLAG_OWN | RXFLAG_INT;
 676 }
 677
 678 static int
 679 jme_make_new_rx_buf(struct jme_adapter *jme, int i)
 680 {
 681         struct jme_ring *rxring = &(jme->rxring[0]);
 682         struct jme_buffer_info *rxbi = rxring->bufinf + i;
 683         struct sk_buff *skb;
 684
 685         skb = netdev_alloc_skb(jme->dev,
 686                 jme->dev->mtu + RX_EXTRA_LEN);
 687         if (unlikely(!skb))
 688                 return -ENOMEM;
 689 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)
 690         skb->dev = jme->dev;
 691 #endif
 692
 693         rxbi->skb = skb;
 694         rxbi->len = skb_tailroom(skb);
 695         rxbi->mapping = pci_map_page(jme->pdev,
 696                                         virt_to_page(skb->data),
 697                                         offset_in_page(skb->data),
 698                                         rxbi->len,
 699                                         PCI_DMA_FROMDEVICE);
 700
 701         return 0;
 702 }
 703
 704 static void
 705 jme_free_rx_buf(struct jme_adapter *jme, int i)
 706 {
 707         struct jme_ring *rxring = &(jme->rxring[0]);
 708         struct jme_buffer_info *rxbi = rxring->bufinf;
 709         rxbi += i;
 710
 711         if (rxbi->skb) {
 712                 pci_unmap_page(jme->pdev,
 713                                  rxbi->mapping,
 714                                  rxbi->len,
 715                                  PCI_DMA_FROMDEVICE);
 716                 dev_kfree_skb(rxbi->skb);
 717                 rxbi->skb = NULL;
 718                 rxbi->mapping = 0;
 719                 rxbi->len = 0;
 720         }
 721 }
 722
 723 static void
 724 jme_free_rx_resources(struct jme_adapter *jme)
 725 {
 726         int i;
 727         struct jme_ring *rxring = &(jme->rxring[0]);
 728
 729         if (rxring->alloc) {
 730                 if (rxring->bufinf) {
 731                         for (i = 0 ; i < jme->rx_ring_size ; ++i)
 732                                 jme_free_rx_buf(jme, i);
 733                         kfree(rxring->bufinf);
 734                 }
 735
 736                 dma_free_coherent(&(jme->pdev->dev),
 737                                   RX_RING_ALLOC_SIZE(jme->rx_ring_size),
 738                                   rxring->alloc,
 739                                   rxring->dmaalloc);
 740                 rxring->alloc    = NULL;
 741                 rxring->desc     = NULL;
 742                 rxring->dmaalloc = 0;
 743                 rxring->dma      = 0;
 744                 rxring->bufinf   = NULL;
 745         }
 746         rxring->next_to_use   = 0;
 747         atomic_set(&rxring->next_to_clean, 0);
 748 }
 749
 750 static int
 751 jme_setup_rx_resources(struct jme_adapter *jme)
 752 {
 753         int i;
 754         struct jme_ring *rxring = &(jme->rxring[0]);
 755
 756         rxring->alloc = dma_alloc_coherent(&(jme->pdev->dev),
 757                                    RX_RING_ALLOC_SIZE(jme->rx_ring_size),
 758                                    &(rxring->dmaalloc),
 759                                    GFP_ATOMIC);
 760         if (!rxring->alloc)
 761                 goto err_set_null;
 762
 763         /*
 764          * 16 Bytes align
 765          */
 766         rxring->desc            = (void *)ALIGN((unsigned long)(rxring->alloc),
 767                                                 RING_DESC_ALIGN);
 768         rxring->dma             = ALIGN(rxring->dmaalloc, RING_DESC_ALIGN);
 769         rxring->next_to_use     = 0;
 770         atomic_set(&rxring->next_to_clean, 0);
 771
 772         rxring->bufinf          = kmalloc(sizeof(struct jme_buffer_info) *
 773                                         jme->rx_ring_size, GFP_ATOMIC);
 774         if (unlikely(!(rxring->bufinf)))
 775                 goto err_free_rxring;
 776
 777         /*
 778          * Initiallize Receive Descriptors
 779          */
 780         memset(rxring->bufinf, 0,
 781                 sizeof(struct jme_buffer_info) * jme->rx_ring_size);
 782         for (i = 0 ; i < jme->rx_ring_size ; ++i) {
 783                 if (unlikely(jme_make_new_rx_buf(jme, i))) {
 784                         jme_free_rx_resources(jme);
 785                         return -ENOMEM;
 786                 }
 787
 788                 jme_set_clean_rxdesc(jme, i);
 789         }
 790
 791         return 0;
 792
 793 err_free_rxring:
 794         dma_free_coherent(&(jme->pdev->dev),
 795                           RX_RING_ALLOC_SIZE(jme->rx_ring_size),
 796                           rxring->alloc,
 797                           rxring->dmaalloc);
 798 err_set_null:
 799         rxring->desc = NULL;
 800         rxring->dmaalloc = 0;
 801         rxring->dma = 0;
 802         rxring->bufinf = NULL;
 803
 804         return -ENOMEM;
 805 }
 806
 807 static inline void
 808 jme_enable_rx_engine(struct jme_adapter *jme)
 809 {
 810         /*
 811          * Select Queue 0
 812          */
 813         jwrite32(jme, JME_RXCS, jme->reg_rxcs |
 814                                 RXCS_QUEUESEL_Q0);
 815         wmb();
 816
 817         /*
 818          * Setup RX DMA Bass Address
 819          */
 820         jwrite32(jme, JME_RXDBA_LO, (__u64)(jme->rxring[0].dma) & 0xFFFFFFFFUL);
 821         jwrite32(jme, JME_RXDBA_HI, (__u64)(jme->rxring[0].dma) >> 32);
 822         jwrite32(jme, JME_RXNDA, (__u64)(jme->rxring[0].dma) & 0xFFFFFFFFUL);
 823
 824         /*
 825          * Setup RX Descriptor Count
 826          */
 827         jwrite32(jme, JME_RXQDC, jme->rx_ring_size);
 828
 829         /*
 830          * Setup Unicast Filter
 831          */
 832         jme_set_multi(jme->dev);
 833
 834         /*
 835          * Enable RX Engine
 836          */
 837         wmb();
 838         jwrite32(jme, JME_RXCS, jme->reg_rxcs |
 839                                 RXCS_QUEUESEL_Q0 |
 840                                 RXCS_ENABLE |
 841                                 RXCS_QST);
 842 }
 843
 844 static inline void
 845 jme_restart_rx_engine(struct jme_adapter *jme)
 846 {
 847         /*
 848          * Start RX Engine
 849          */
 850         jwrite32(jme, JME_RXCS, jme->reg_rxcs |
 851                                 RXCS_QUEUESEL_Q0 |
 852                                 RXCS_ENABLE |
 853                                 RXCS_QST);
 854 }
 855
 856 static inline void
 857 jme_disable_rx_engine(struct jme_adapter *jme)
 858 {
 859         int i;
 860         u32 val;
 861
 862         /*
 863          * Disable RX Engine
 864          */
 865         jwrite32(jme, JME_RXCS, jme->reg_rxcs);
 866         wmb();
 867
 868         val = jread32(jme, JME_RXCS);
 869         for (i = JME_RX_DISABLE_TIMEOUT ; (val & RXCS_ENABLE) && i > 0 ; --i) {
 870                 mdelay(1);
 871                 val = jread32(jme, JME_RXCS);
 872                 rmb();
 873         }
 874
 875         if (!i)
 876                 pr_err("Disable RX engine timeout\n");
 877
 878 }
 879
 880 static int
 881 jme_rxsum_ok(struct jme_adapter *jme, u16 flags)
 882 {
 883         if (!(flags & (RXWBFLAG_TCPON | RXWBFLAG_UDPON | RXWBFLAG_IPV4)))
 884                 return false;
 885
 886         if (unlikely((flags & (RXWBFLAG_MF | RXWBFLAG_TCPON | RXWBFLAG_TCPCS))
 887                         == RXWBFLAG_TCPON)) {
 888                 if (flags & RXWBFLAG_IPV4)
 889                         netif_err(jme, rx_err, jme->dev, "TCP Checksum error\n");
 890                 return false;
 891         }
 892
 893         if (unlikely((flags & (RXWBFLAG_MF | RXWBFLAG_UDPON | RXWBFLAG_UDPCS))
 894                         == RXWBFLAG_UDPON)) {
 895                 if (flags & RXWBFLAG_IPV4)
 896                         netif_err(jme, rx_err, jme->dev, "UDP Checksum error\n");
 897                 return false;
 898         }
 899
 900         if (unlikely((flags & (RXWBFLAG_IPV4 | RXWBFLAG_IPCS))
 901                         == RXWBFLAG_IPV4)) {
 902                 netif_err(jme, rx_err, jme->dev, "IPv4 Checksum error\n");
 903                 return false;
 904         }
 905
 906         return true;
 907 }
 908
 909 static void
 910 jme_alloc_and_feed_skb(struct jme_adapter *jme, int idx)
 911 {
 912         struct jme_ring *rxring = &(jme->rxring[0]);
 913         struct rxdesc *rxdesc = rxring->desc;
 914         struct jme_buffer_info *rxbi = rxring->bufinf;
 915         struct sk_buff *skb;
 916         int framesize;
 917
 918         rxdesc += idx;
 919         rxbi += idx;
 920
 921         skb = rxbi->skb;
 922         pci_dma_sync_single_for_cpu(jme->pdev,
 923                                         rxbi->mapping,
 924                                         rxbi->len,
 925                                         PCI_DMA_FROMDEVICE);
 926
 927         if (unlikely(jme_make_new_rx_buf(jme, idx))) {
 928                 pci_dma_sync_single_for_device(jme->pdev,
 929                                                 rxbi->mapping,
 930                                                 rxbi->len,
 931                                                 PCI_DMA_FROMDEVICE);
 932
 933                 ++(NET_STAT(jme).rx_dropped);
 934         } else {
 935                 framesize = le16_to_cpu(rxdesc->descwb.framesize)
 936                                 - RX_PREPAD_SIZE;
 937
 938                 skb_reserve(skb, RX_PREPAD_SIZE);
 939                 skb_put(skb, framesize);
 940                 skb->protocol = eth_type_trans(skb, jme->dev);
 941
 942                 if (jme_rxsum_ok(jme, le16_to_cpu(rxdesc->descwb.flags)))
 943                         skb->ip_summed = CHECKSUM_UNNECESSARY;
 944                 else
 945 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,35)
 946                         skb->ip_summed = CHECKSUM_NONE;
 947 #else
 948                         skb_checksum_none_assert(skb);
 949 #endif
 950
 951                 if (rxdesc->descwb.flags & cpu_to_le16(RXWBFLAG_TAGON)) {
 952                         if (jme->vlgrp) {
 953                                 jme->jme_vlan_rx(skb, jme->vlgrp,
 954                                         le16_to_cpu(rxdesc->descwb.vlan));
 955                                 NET_STAT(jme).rx_bytes += 4;
 956                         } else {
 957                                 dev_kfree_skb(skb);
 958                         }
 959                 } else {
 960                         jme->jme_rx(skb);
 961                 }
 962
 963                 if ((rxdesc->descwb.flags & cpu_to_le16(RXWBFLAG_DEST)) ==
 964                     cpu_to_le16(RXWBFLAG_DEST_MUL))
 965                         ++(NET_STAT(jme).multicast);
 966
 967                 NET_STAT(jme).rx_bytes += framesize;
 968                 ++(NET_STAT(jme).rx_packets);
 969         }
 970
 971         jme_set_clean_rxdesc(jme, idx);
 972
 973 }
 974
 975 static int
 976 jme_process_receive(struct jme_adapter *jme, int limit)
 977 {
 978         struct jme_ring *rxring = &(jme->rxring[0]);
 979         struct rxdesc *rxdesc = rxring->desc;
 980         int i, j, ccnt, desccnt, mask = jme->rx_ring_mask;
 981
 982         if (unlikely(!atomic_dec_and_test(&jme->rx_cleaning)))
 983                 goto out_inc;
 984
 985         if (unlikely(atomic_read(&jme->link_changing) != 1))
 986                 goto out_inc;
 987
 988         if (unlikely(!netif_carrier_ok(jme->dev)))
 989                 goto out_inc;
 990
 991         i = atomic_read(&rxring->next_to_clean);
 992         while (limit > 0) {
 993                 rxdesc = rxring->desc;
 994                 rxdesc += i;
 995
 996                 if ((rxdesc->descwb.flags & cpu_to_le16(RXWBFLAG_OWN)) ||
 997                 !(rxdesc->descwb.desccnt & RXWBDCNT_WBCPL))
 998                         goto out;
 999                 --limit;
1000
1001                 rmb();
1002                 desccnt = rxdesc->descwb.desccnt & RXWBDCNT_DCNT;
1003
1004                 if (unlikely(desccnt > 1 ||
1005                 rxdesc->descwb.errstat & RXWBERR_ALLERR)) {
1006
1007                         if (rxdesc->descwb.errstat & RXWBERR_CRCERR)
1008                                 ++(NET_STAT(jme).rx_crc_errors);
1009                         else if (rxdesc->descwb.errstat & RXWBERR_OVERUN)
1010                                 ++(NET_STAT(jme).rx_fifo_errors);
1011                         else
1012                                 ++(NET_STAT(jme).rx_errors);
1013
1014                         if (desccnt > 1)
1015                                 limit -= desccnt - 1;
1016
1017                         for (j = i, ccnt = desccnt ; ccnt-- ; ) {
1018                                 jme_set_clean_rxdesc(jme, j);
1019                                 j = (j + 1) & (mask);
1020                         }
1021
1022                 } else {
1023                         jme_alloc_and_feed_skb(jme, i);
1024                 }
1025
1026                 i = (i + desccnt) & (mask);
1027         }
1028
1029 out:
1030         atomic_set(&rxring->next_to_clean, i);
1031
1032 out_inc:
1033         atomic_inc(&jme->rx_cleaning);
1034
1035         return limit > 0 ? limit : 0;
1036
1037 }
1038
1039 static void
1040 jme_attempt_pcc(struct dynpcc_info *dpi, int atmp)
1041 {
1042         if (likely(atmp == dpi->cur)) {
1043                 dpi->cnt = 0;
1044                 return;
1045         }
1046
1047         if (dpi->attempt == atmp) {
1048                 ++(dpi->cnt);
1049         } else {
1050                 dpi->attempt = atmp;
1051                 dpi->cnt = 0;
1052         }
1053
1054 }
1055
1056 static void
1057 jme_dynamic_pcc(struct jme_adapter *jme)
1058 {
1059         register struct dynpcc_info *dpi = &(jme->dpi);
1060
1061         if ((NET_STAT(jme).rx_bytes - dpi->last_bytes) > PCC_P3_THRESHOLD)
1062                 jme_attempt_pcc(dpi, PCC_P3);
1063         else if ((NET_STAT(jme).rx_packets - dpi->last_pkts) > PCC_P2_THRESHOLD ||
1064                  dpi->intr_cnt > PCC_INTR_THRESHOLD)
1065                 jme_attempt_pcc(dpi, PCC_P2);
1066         else
1067                 jme_attempt_pcc(dpi, PCC_P1);
1068
1069         if (unlikely(dpi->attempt != dpi->cur && dpi->cnt > 5)) {
1070                 if (dpi->attempt < dpi->cur)
1071                         tasklet_schedule(&jme->rxclean_task);
1072                 jme_set_rx_pcc(jme, dpi->attempt);
1073                 dpi->cur = dpi->attempt;
1074                 dpi->cnt = 0;
1075         }
1076 }
1077
1078 static void
1079 jme_start_pcc_timer(struct jme_adapter *jme)
1080 {
1081         struct dynpcc_info *dpi = &(jme->dpi);
1082         dpi->last_bytes         = NET_STAT(jme).rx_bytes;
1083         dpi->last_pkts          = NET_STAT(jme).rx_packets;
1084         dpi->intr_cnt           = 0;
1085         jwrite32(jme, JME_TMCSR,
1086                 TMCSR_EN | ((0xFFFFFF - PCC_INTERVAL_US) & TMCSR_CNT));
1087 }
1088
1089 static inline void
1090 jme_stop_pcc_timer(struct jme_adapter *jme)
1091 {
1092         jwrite32(jme, JME_TMCSR, 0);
1093 }
1094
1095 static void
1096 jme_shutdown_nic(struct jme_adapter *jme)
1097 {
1098         u32 phylink;
1099
1100         phylink = jme_linkstat_from_phy(jme);
1101
1102         if (!(phylink & PHY_LINK_UP)) {
1103                 /*
1104                  * Disable all interrupt before issue timer
1105                  */
1106                 jme_stop_irq(jme);
1107                 jwrite32(jme, JME_TIMER2, TMCSR_EN | 0xFFFFFE);
1108         }
1109 }
1110
1111 static void
1112 jme_pcc_tasklet(unsigned long arg)
1113 {
1114         struct jme_adapter *jme = (struct jme_adapter *)arg;
1115         struct net_device *netdev = jme->dev;
1116
1117         if (unlikely(test_bit(JME_FLAG_SHUTDOWN, &jme->flags))) {
1118                 jme_shutdown_nic(jme);
1119                 return;
1120         }
1121
1122         if (unlikely(!netif_carrier_ok(netdev) ||
1123                 (atomic_read(&jme->link_changing) != 1)
1124         )) {
1125                 jme_stop_pcc_timer(jme);
1126                 return;
1127         }
1128
1129         if (!(test_bit(JME_FLAG_POLL, &jme->flags)))
1130                 jme_dynamic_pcc(jme);
1131
1132         jme_start_pcc_timer(jme);
1133 }
1134
1135 static inline void
1136 jme_polling_mode(struct jme_adapter *jme)
1137 {
1138         jme_set_rx_pcc(jme, PCC_OFF);
1139 }
1140
1141 static inline void
1142 jme_interrupt_mode(struct jme_adapter *jme)
1143 {
1144         jme_set_rx_pcc(jme, PCC_P1);
1145 }
1146
1147 static inline int
1148 jme_pseudo_hotplug_enabled(struct jme_adapter *jme)
1149 {
1150         u32 apmc;
1151         apmc = jread32(jme, JME_APMC);
1152         return apmc & JME_APMC_PSEUDO_HP_EN;
1153 }
1154
1155 static void
1156 jme_start_shutdown_timer(struct jme_adapter *jme)
1157 {
1158         u32 apmc;
1159
1160         apmc = jread32(jme, JME_APMC) | JME_APMC_PCIE_SD_EN;
1161         apmc &= ~JME_APMC_EPIEN_CTRL;
1162         if (!no_extplug) {
1163                 jwrite32f(jme, JME_APMC, apmc | JME_APMC_EPIEN_CTRL_EN);
1164                 wmb();
1165         }
1166         jwrite32f(jme, JME_APMC, apmc);
1167
1168         jwrite32f(jme, JME_TIMER2, 0);
1169         set_bit(JME_FLAG_SHUTDOWN, &jme->flags);
1170         jwrite32(jme, JME_TMCSR,
1171                 TMCSR_EN | ((0xFFFFFF - APMC_PHP_SHUTDOWN_DELAY) & TMCSR_CNT));
1172 }
1173
1174 static void
1175 jme_stop_shutdown_timer(struct jme_adapter *jme)
1176 {
1177         u32 apmc;
1178
1179         jwrite32f(jme, JME_TMCSR, 0);
1180         jwrite32f(jme, JME_TIMER2, 0);
1181         clear_bit(JME_FLAG_SHUTDOWN, &jme->flags);
1182
1183         apmc = jread32(jme, JME_APMC);
1184         apmc &= ~(JME_APMC_PCIE_SD_EN | JME_APMC_EPIEN_CTRL);
1185         jwrite32f(jme, JME_APMC, apmc | JME_APMC_EPIEN_CTRL_DIS);
1186         wmb();
1187         jwrite32f(jme, JME_APMC, apmc);
1188 }
1189
1190 static void
1191 jme_link_change_tasklet(unsigned long arg)
1192 {
1193         struct jme_adapter *jme = (struct jme_adapter *)arg;
1194         struct net_device *netdev = jme->dev;
1195         int rc;
1196
1197         while (!atomic_dec_and_test(&jme->link_changing)) {
1198                 atomic_inc(&jme->link_changing);
1199                 netif_info(jme, intr, jme->dev, "Get link change lock failed\n");
1200                 while (atomic_read(&jme->link_changing) != 1)
1201                         netif_info(jme, intr, jme->dev, "Waiting link change lock\n");
1202         }
1203
1204         if (jme_check_link(netdev, 1) && jme->old_mtu == netdev->mtu)
1205                 goto out;
1206
1207         jme->old_mtu = netdev->mtu;
1208         netif_stop_queue(netdev);
1209         if (jme_pseudo_hotplug_enabled(jme))
1210                 jme_stop_shutdown_timer(jme);
1211
1212         jme_stop_pcc_timer(jme);
1213         tasklet_disable(&jme->txclean_task);
1214         tasklet_disable(&jme->rxclean_task);
1215         tasklet_disable(&jme->rxempty_task);
1216
1217         if (netif_carrier_ok(netdev)) {
1218                 jme_reset_ghc_speed(jme);
1219                 jme_disable_rx_engine(jme);
1220                 jme_disable_tx_engine(jme);
1221                 jme_reset_mac_processor(jme);
1222                 jme_free_rx_resources(jme);
1223                 jme_free_tx_resources(jme);
1224
1225                 if (test_bit(JME_FLAG_POLL, &jme->flags))
1226                         jme_polling_mode(jme);
1227
1228                 netif_carrier_off(netdev);
1229         }
1230
1231         jme_check_link(netdev, 0);
1232         if (netif_carrier_ok(netdev)) {
1233                 rc = jme_setup_rx_resources(jme);
1234                 if (rc) {
1235                         pr_err("Allocating resources for RX error, Device STOPPED!\n");
1236                         goto out_enable_tasklet;
1237                 }
1238
1239                 rc = jme_setup_tx_resources(jme);
1240                 if (rc) {
1241                         pr_err("Allocating resources for TX error, Device STOPPED!\n");
1242                         goto err_out_free_rx_resources;
1243                 }
1244
1245                 jme_enable_rx_engine(jme);
1246                 jme_enable_tx_engine(jme);
1247
1248                 netif_start_queue(netdev);
1249
1250                 if (test_bit(JME_FLAG_POLL, &jme->flags))
1251                         jme_interrupt_mode(jme);
1252
1253                 jme_start_pcc_timer(jme);
1254         } else if (jme_pseudo_hotplug_enabled(jme)) {
1255                 jme_start_shutdown_timer(jme);
1256         }
1257
1258         goto out_enable_tasklet;
1259
1260 err_out_free_rx_resources:
1261         jme_free_rx_resources(jme);
1262 out_enable_tasklet:
1263         tasklet_enable(&jme->txclean_task);
1264         tasklet_hi_enable(&jme->rxclean_task);
1265         tasklet_hi_enable(&jme->rxempty_task);
1266 out:
1267         atomic_inc(&jme->link_changing);
1268 }
1269
1270 static void
1271 jme_rx_clean_tasklet(unsigned long arg)
1272 {
1273         struct jme_adapter *jme = (struct jme_adapter *)arg;
1274         struct dynpcc_info *dpi = &(jme->dpi);
1275
1276         jme_process_receive(jme, jme->rx_ring_size);
1277         ++(dpi->intr_cnt);
1278
1279 }
1280
1281 static int
1282 jme_poll(JME_NAPI_HOLDER(holder), JME_NAPI_WEIGHT(budget))
1283 {
1284         struct jme_adapter *jme = jme_napi_priv(holder);
1285         DECLARE_NETDEV
1286         int rest;
1287
1288         rest = jme_process_receive(jme, JME_NAPI_WEIGHT_VAL(budget));
1289
1290         while (atomic_read(&jme->rx_empty) > 0) {
1291                 atomic_dec(&jme->rx_empty);
1292                 ++(NET_STAT(jme).rx_dropped);
1293                 jme_restart_rx_engine(jme);
1294         }
1295         atomic_inc(&jme->rx_empty);
1296
1297         if (rest) {
1298                 JME_RX_COMPLETE(netdev, holder);
1299                 jme_interrupt_mode(jme);
1300         }
1301
1302         JME_NAPI_WEIGHT_SET(budget, rest);
1303         return JME_NAPI_WEIGHT_VAL(budget) - rest;
1304 }
1305
1306 static void
1307 jme_rx_empty_tasklet(unsigned long arg)
1308 {
1309         struct jme_adapter *jme = (struct jme_adapter *)arg;
1310
1311         if (unlikely(atomic_read(&jme->link_changing) != 1))
1312                 return;
1313
1314         if (unlikely(!netif_carrier_ok(jme->dev)))
1315                 return;
1316
1317         netif_info(jme, rx_status, jme->dev, "RX Queue Full!\n");
1318
1319         jme_rx_clean_tasklet(arg);
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
1329 static void
1330 jme_wake_queue_if_stopped(struct jme_adapter *jme)
1331 {
1332         struct jme_ring *txring = &(jme->txring[0]);
1333
1334         smp_wmb();
1335         if (unlikely(netif_queue_stopped(jme->dev) &&
1336         atomic_read(&txring->nr_free) >= (jme->tx_wake_threshold))) {
1337                 netif_info(jme, tx_done, jme->dev, "TX Queue Waked\n");
1338                 netif_wake_queue(jme->dev);
1339         }
1340
1341 }
1342
1343 static void
1344 jme_tx_clean_tasklet(unsigned long arg)
1345 {
1346         struct jme_adapter *jme = (struct jme_adapter *)arg;
1347         struct jme_ring *txring = &(jme->txring[0]);
1348         struct txdesc *txdesc = txring->desc;
1349         struct jme_buffer_info *txbi = txring->bufinf, *ctxbi, *ttxbi;
1350         int i, j, cnt = 0, max, err, mask;
1351
1352         tx_dbg(jme, "Into txclean\n");
1353
1354         if (unlikely(!atomic_dec_and_test(&jme->tx_cleaning)))
1355                 goto out;
1356
1357         if (unlikely(atomic_read(&jme->link_changing) != 1))
1358                 goto out;
1359
1360         if (unlikely(!netif_carrier_ok(jme->dev)))
1361                 goto out;
1362
1363         max = jme->tx_ring_size - atomic_read(&txring->nr_free);
1364         mask = jme->tx_ring_mask;
1365
1366         for (i = atomic_read(&txring->next_to_clean) ; cnt < max ; ) {
1367
1368                 ctxbi = txbi + i;
1369
1370                 if (likely(ctxbi->skb &&
1371                 !(txdesc[i].descwb.flags & TXWBFLAG_OWN))) {
1372
1373                         tx_dbg(jme, "txclean: %d+%d@%lu\n",
1374                                i, ctxbi->nr_desc, jiffies);
1375
1376                         err = txdesc[i].descwb.flags & TXWBFLAG_ALLERR;
1377
1378                         for (j = 1 ; j < ctxbi->nr_desc ; ++j) {
1379                                 ttxbi = txbi + ((i + j) & (mask));
1380                                 txdesc[(i + j) & (mask)].dw[0] = 0;
1381
1382                                 pci_unmap_page(jme->pdev,
1383                                                  ttxbi->mapping,
1384                                                  ttxbi->len,
1385                                                  PCI_DMA_TODEVICE);
1386
1387                                 ttxbi->mapping = 0;
1388                                 ttxbi->len = 0;
1389                         }
1390
1391                         dev_kfree_skb(ctxbi->skb);
1392
1393                         cnt += ctxbi->nr_desc;
1394
1395                         if (unlikely(err)) {
1396                                 ++(NET_STAT(jme).tx_carrier_errors);
1397                         } else {
1398                                 ++(NET_STAT(jme).tx_packets);
1399                                 NET_STAT(jme).tx_bytes += ctxbi->len;
1400                         }
1401
1402                         ctxbi->skb = NULL;
1403                         ctxbi->len = 0;
1404                         ctxbi->start_xmit = 0;
1405
1406                 } else {
1407                         break;
1408                 }
1409
1410                 i = (i + ctxbi->nr_desc) & mask;
1411
1412                 ctxbi->nr_desc = 0;
1413         }
1414
1415         tx_dbg(jme, "txclean: done %d@%lu\n", i, jiffies);
1416         atomic_set(&txring->next_to_clean, i);
1417         atomic_add(cnt, &txring->nr_free);
1418
1419         jme_wake_queue_if_stopped(jme);
1420
1421 out:
1422         atomic_inc(&jme->tx_cleaning);
1423 }
1424
1425 static void
1426 jme_intr_msi(struct jme_adapter *jme, u32 intrstat)
1427 {
1428         /*
1429          * Disable interrupt
1430          */
1431         jwrite32f(jme, JME_IENC, INTR_ENABLE);
1432
1433         if (intrstat & (INTR_LINKCH | INTR_SWINTR)) {
1434                 /*
1435                  * Link change event is critical
1436                  * all other events are ignored
1437                  */
1438                 jwrite32(jme, JME_IEVE, intrstat);
1439                 tasklet_schedule(&jme->linkch_task);
1440                 goto out_reenable;
1441         }
1442
1443         if (intrstat & INTR_TMINTR) {
1444                 jwrite32(jme, JME_IEVE, INTR_TMINTR);
1445                 tasklet_schedule(&jme->pcc_task);
1446         }
1447
1448         if (intrstat & (INTR_PCCTXTO | INTR_PCCTX)) {
1449                 jwrite32(jme, JME_IEVE, INTR_PCCTXTO | INTR_PCCTX | INTR_TX0);
1450                 tasklet_schedule(&jme->txclean_task);
1451         }
1452
1453         if ((intrstat & (INTR_PCCRX0TO | INTR_PCCRX0 | INTR_RX0EMP))) {
1454                 jwrite32(jme, JME_IEVE, (intrstat & (INTR_PCCRX0TO |
1455                                                      INTR_PCCRX0 |
1456                                                      INTR_RX0EMP)) |
1457                                         INTR_RX0);
1458         }
1459
1460         if (test_bit(JME_FLAG_POLL, &jme->flags)) {
1461                 if (intrstat & INTR_RX0EMP)
1462                         atomic_inc(&jme->rx_empty);
1463
1464                 if ((intrstat & (INTR_PCCRX0TO | INTR_PCCRX0 | INTR_RX0EMP))) {
1465                         if (likely(JME_RX_SCHEDULE_PREP(jme))) {
1466                                 jme_polling_mode(jme);
1467                                 JME_RX_SCHEDULE(jme);
1468                         }
1469                 }
1470         } else {
1471                 if (intrstat & INTR_RX0EMP) {
1472                         atomic_inc(&jme->rx_empty);
1473                         tasklet_hi_schedule(&jme->rxempty_task);
1474                 } else if (intrstat & (INTR_PCCRX0TO | INTR_PCCRX0)) {
1475                         tasklet_hi_schedule(&jme->rxclean_task);
1476                 }
1477         }
1478
1479 out_reenable:
1480         /*
1481          * Re-enable interrupt
1482          */
1483         jwrite32f(jme, JME_IENS, INTR_ENABLE);
1484 }
1485
1486 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,18)
1487 static irqreturn_t
1488 jme_intr(int irq, void *dev_id, struct pt_regs *regs)
1489 #else
1490 static irqreturn_t
1491 jme_intr(int irq, void *dev_id)
1492 #endif
1493 {
1494         struct net_device *netdev = dev_id;
1495         struct jme_adapter *jme = netdev_priv(netdev);
1496         u32 intrstat;
1497
1498         intrstat = jread32(jme, JME_IEVE);
1499
1500         /*
1501          * Check if it's really an interrupt for us
1502          */
1503         if (unlikely((intrstat & INTR_ENABLE) == 0))
1504                 return IRQ_NONE;
1505
1506         /*
1507          * Check if the device still exist
1508          */
1509         if (unlikely(intrstat == ~((typeof(intrstat))0)))
1510                 return IRQ_NONE;
1511
1512         jme_intr_msi(jme, intrstat);
1513
1514         return IRQ_HANDLED;
1515 }
1516
1517 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,18)
1518 static irqreturn_t
1519 jme_msi(int irq, void *dev_id, struct pt_regs *regs)
1520 #else
1521 static irqreturn_t
1522 jme_msi(int irq, void *dev_id)
1523 #endif
1524 {
1525         struct net_device *netdev = dev_id;
1526         struct jme_adapter *jme = netdev_priv(netdev);
1527         u32 intrstat;
1528
1529         intrstat = jread32(jme, JME_IEVE);
1530
1531         jme_intr_msi(jme, intrstat);
1532
1533         return IRQ_HANDLED;
1534 }
1535
1536 static void
1537 jme_reset_link(struct jme_adapter *jme)
1538 {
1539         jwrite32(jme, JME_TMCSR, TMCSR_SWIT);
1540 }
1541
1542 static void
1543 jme_restart_an(struct jme_adapter *jme)
1544 {
1545         u32 bmcr;
1546
1547         spin_lock_bh(&jme->phy_lock);
1548         bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
1549         bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
1550         jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, bmcr);
1551         spin_unlock_bh(&jme->phy_lock);
1552 }
1553
1554 static int
1555 jme_request_irq(struct jme_adapter *jme)
1556 {
1557         int rc;
1558         struct net_device *netdev = jme->dev;
1559 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,18)
1560         irqreturn_t (*handler)(int, void *, struct pt_regs *) = jme_intr;
1561         int irq_flags = SA_SHIRQ;
1562 #else
1563         irq_handler_t handler = jme_intr;
1564         int irq_flags = IRQF_SHARED;
1565 #endif
1566
1567         if (!pci_enable_msi(jme->pdev)) {
1568                 set_bit(JME_FLAG_MSI, &jme->flags);
1569                 handler = jme_msi;
1570                 irq_flags = 0;
1571         }
1572
1573         rc = request_irq(jme->pdev->irq, handler, irq_flags, netdev->name,
1574                           netdev);
1575         if (rc) {
1576                 netdev_err(netdev,
1577                            "Unable to request %s interrupt (return: %d)\n",
1578                            test_bit(JME_FLAG_MSI, &jme->flags) ? "MSI" : "INTx",
1579                            rc);
1580
1581                 if (test_bit(JME_FLAG_MSI, &jme->flags)) {
1582                         pci_disable_msi(jme->pdev);
1583                         clear_bit(JME_FLAG_MSI, &jme->flags);
1584                 }
1585         } else {
1586                 netdev->irq = jme->pdev->irq;
1587         }
1588
1589         return rc;
1590 }
1591
1592 static void
1593 jme_free_irq(struct jme_adapter *jme)
1594 {
1595         free_irq(jme->pdev->irq, jme->dev);
1596         if (test_bit(JME_FLAG_MSI, &jme->flags)) {
1597                 pci_disable_msi(jme->pdev);
1598                 clear_bit(JME_FLAG_MSI, &jme->flags);
1599                 jme->dev->irq = jme->pdev->irq;
1600         }
1601 }
1602
1603 static inline void
1604 jme_new_phy_on(struct jme_adapter *jme)
1605 {
1606         u32 reg;
1607
1608         reg = jread32(jme, JME_PHY_PWR);
1609         reg &= ~(PHY_PWR_DWN1SEL | PHY_PWR_DWN1SW |
1610                  PHY_PWR_DWN2 | PHY_PWR_CLKSEL);
1611         jwrite32(jme, JME_PHY_PWR, reg);
1612
1613         pci_read_config_dword(jme->pdev, PCI_PRIV_PE1, &reg);
1614         reg &= ~PE1_GPREG0_PBG;
1615         reg |= PE1_GPREG0_ENBG;
1616         pci_write_config_dword(jme->pdev, PCI_PRIV_PE1, reg);
1617 }
1618
1619 static inline void
1620 jme_new_phy_off(struct jme_adapter *jme)
1621 {
1622         u32 reg;
1623
1624         reg = jread32(jme, JME_PHY_PWR);
1625         reg |= PHY_PWR_DWN1SEL | PHY_PWR_DWN1SW |
1626                PHY_PWR_DWN2 | PHY_PWR_CLKSEL;
1627         jwrite32(jme, JME_PHY_PWR, reg);
1628
1629         pci_read_config_dword(jme->pdev, PCI_PRIV_PE1, &reg);
1630         reg &= ~PE1_GPREG0_PBG;
1631         reg |= PE1_GPREG0_PDD3COLD;
1632         pci_write_config_dword(jme->pdev, PCI_PRIV_PE1, reg);
1633 }
1634
1635 static inline void
1636 jme_phy_on(struct jme_adapter *jme)
1637 {
1638         u32 bmcr;
1639
1640         bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
1641         bmcr &= ~BMCR_PDOWN;
1642         jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, bmcr);
1643
1644         if (new_phy_power_ctrl(jme->chip_main_rev))
1645                 jme_new_phy_on(jme);
1646 }
1647
1648 static inline void
1649 jme_phy_off(struct jme_adapter *jme)
1650 {
1651         u32 bmcr;
1652
1653         bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
1654         bmcr |= BMCR_PDOWN;
1655         jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, bmcr);
1656
1657         if (new_phy_power_ctrl(jme->chip_main_rev))
1658                 jme_new_phy_off(jme);
1659 }
1660
1661 static int
1662 jme_open(struct net_device *netdev)
1663 {
1664         struct jme_adapter *jme = netdev_priv(netdev);
1665         int rc;
1666
1667         jme_clear_pm(jme);
1668         JME_NAPI_ENABLE(jme);
1669
1670         tasklet_enable(&jme->linkch_task);
1671         tasklet_enable(&jme->txclean_task);
1672         tasklet_hi_enable(&jme->rxclean_task);
1673         tasklet_hi_enable(&jme->rxempty_task);
1674
1675         rc = jme_request_irq(jme);
1676         if (rc)
1677                 goto err_out;
1678
1679         jme_start_irq(jme);
1680
1681         jme_phy_on(jme);
1682         if (test_bit(JME_FLAG_SSET, &jme->flags))
1683                 jme_set_settings(netdev, &jme->old_ecmd);
1684         else
1685                 jme_reset_phy_processor(jme);
1686
1687         jme_reset_link(jme);
1688
1689         return 0;
1690
1691 err_out:
1692         netif_stop_queue(netdev);
1693         netif_carrier_off(netdev);
1694         return rc;
1695 }
1696
1697 static void
1698 jme_set_100m_half(struct jme_adapter *jme)
1699 {
1700         u32 bmcr, tmp;
1701
1702         jme_phy_on(jme);
1703         bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
1704         tmp = bmcr & ~(BMCR_ANENABLE | BMCR_SPEED100 |
1705                        BMCR_SPEED1000 | BMCR_FULLDPLX);
1706         tmp |= BMCR_SPEED100;
1707
1708         if (bmcr != tmp)
1709                 jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, tmp);
1710
1711         if (jme->fpgaver)
1712                 jwrite32(jme, JME_GHC, GHC_SPEED_100M | GHC_LINK_POLL);
1713         else
1714                 jwrite32(jme, JME_GHC, GHC_SPEED_100M);
1715 }
1716
1717 #define JME_WAIT_LINK_TIME 2000 /* 2000ms */
1718 static void
1719 jme_wait_link(struct jme_adapter *jme)
1720 {
1721         u32 phylink, to = JME_WAIT_LINK_TIME;
1722
1723         mdelay(1000);
1724         phylink = jme_linkstat_from_phy(jme);
1725         while (!(phylink & PHY_LINK_UP) && (to -= 10) > 0) {
1726                 mdelay(10);
1727                 phylink = jme_linkstat_from_phy(jme);
1728         }
1729 }
1730
1731 static void
1732 jme_powersave_phy(struct jme_adapter *jme)
1733 {
1734         if (jme->reg_pmcs) {
1735                 jme_set_100m_half(jme);
1736
1737                 if (jme->reg_pmcs & (PMCS_LFEN | PMCS_LREN))
1738                         jme_wait_link(jme);
1739
1740                 jwrite32(jme, JME_PMCS, jme->reg_pmcs);
1741         } else {
1742                 jme_phy_off(jme);
1743         }
1744 }
1745
1746 static int
1747 jme_close(struct net_device *netdev)
1748 {
1749         struct jme_adapter *jme = netdev_priv(netdev);
1750
1751         netif_stop_queue(netdev);
1752         netif_carrier_off(netdev);
1753
1754         jme_stop_irq(jme);
1755         jme_free_irq(jme);
1756
1757         JME_NAPI_DISABLE(jme);
1758
1759         tasklet_disable(&jme->linkch_task);
1760         tasklet_disable(&jme->txclean_task);
1761         tasklet_disable(&jme->rxclean_task);
1762         tasklet_disable(&jme->rxempty_task);
1763
1764         jme_reset_ghc_speed(jme);
1765         jme_disable_rx_engine(jme);
1766         jme_disable_tx_engine(jme);
1767         jme_reset_mac_processor(jme);
1768         jme_free_rx_resources(jme);
1769         jme_free_tx_resources(jme);
1770         jme->phylink = 0;
1771         jme_phy_off(jme);
1772
1773         return 0;
1774 }
1775
1776 static int
1777 jme_alloc_txdesc(struct jme_adapter *jme,
1778                         struct sk_buff *skb)
1779 {
1780         struct jme_ring *txring = &(jme->txring[0]);
1781         int idx, nr_alloc, mask = jme->tx_ring_mask;
1782
1783         idx = txring->next_to_use;
1784         nr_alloc = skb_shinfo(skb)->nr_frags + 2;
1785
1786         if (unlikely(atomic_read(&txring->nr_free) < nr_alloc))
1787                 return -1;
1788
1789         atomic_sub(nr_alloc, &txring->nr_free);
1790
1791         txring->next_to_use = (txring->next_to_use + nr_alloc) & mask;
1792
1793         return idx;
1794 }
1795
1796 static void
1797 jme_fill_tx_map(struct pci_dev *pdev,
1798                 struct txdesc *txdesc,
1799                 struct jme_buffer_info *txbi,
1800                 struct page *page,
1801                 u32 page_offset,
1802                 u32 len,
1803                 u8 hidma)
1804 {
1805         dma_addr_t dmaaddr;
1806
1807         dmaaddr = pci_map_page(pdev,
1808                                 page,
1809                                 page_offset,
1810                                 len,
1811                                 PCI_DMA_TODEVICE);
1812
1813         pci_dma_sync_single_for_device(pdev,
1814                                        dmaaddr,
1815                                        len,
1816                                        PCI_DMA_TODEVICE);
1817
1818         txdesc->dw[0] = 0;
1819         txdesc->dw[1] = 0;
1820         txdesc->desc2.flags     = TXFLAG_OWN;
1821         txdesc->desc2.flags     |= (hidma) ? TXFLAG_64BIT : 0;
1822         txdesc->desc2.datalen   = cpu_to_le16(len);
1823         txdesc->desc2.bufaddrh  = cpu_to_le32((__u64)dmaaddr >> 32);
1824         txdesc->desc2.bufaddrl  = cpu_to_le32(
1825                                         (__u64)dmaaddr & 0xFFFFFFFFUL);
1826
1827         txbi->mapping = dmaaddr;
1828         txbi->len = len;
1829 }
1830
1831 static void
1832 jme_map_tx_skb(struct jme_adapter *jme, struct sk_buff *skb, int idx)
1833 {
1834         struct jme_ring *txring = &(jme->txring[0]);
1835         struct txdesc *txdesc = txring->desc, *ctxdesc;
1836         struct jme_buffer_info *txbi = txring->bufinf, *ctxbi;
1837         u8 hidma = jme->dev->features & NETIF_F_HIGHDMA;
1838         int i, nr_frags = skb_shinfo(skb)->nr_frags;
1839         int mask = jme->tx_ring_mask;
1840         struct skb_frag_struct *frag;
1841         u32 len;
1842
1843         for (i = 0 ; i < nr_frags ; ++i) {
1844                 frag = &skb_shinfo(skb)->frags[i];
1845                 ctxdesc = txdesc + ((idx + i + 2) & (mask));
1846                 ctxbi = txbi + ((idx + i + 2) & (mask));
1847
1848                 jme_fill_tx_map(jme->pdev, ctxdesc, ctxbi, frag->page,
1849                                  frag->page_offset, frag->size, hidma);
1850         }
1851
1852         len = skb_is_nonlinear(skb) ? skb_headlen(skb) : skb->len;
1853         ctxdesc = txdesc + ((idx + 1) & (mask));
1854         ctxbi = txbi + ((idx + 1) & (mask));
1855         jme_fill_tx_map(jme->pdev, ctxdesc, ctxbi, virt_to_page(skb->data),
1856                         offset_in_page(skb->data), len, hidma);
1857
1858 }
1859
1860 static int
1861 jme_expand_header(struct jme_adapter *jme, struct sk_buff *skb)
1862 {
1863         if (unlikely(
1864 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,17)
1865         skb_shinfo(skb)->tso_size
1866 #else
1867         skb_shinfo(skb)->gso_size
1868 #endif
1869                         && skb_header_cloned(skb) &&
1870                         pskb_expand_head(skb, 0, 0, GFP_ATOMIC))) {
1871                 dev_kfree_skb(skb);
1872                 return -1;
1873         }
1874
1875         return 0;
1876 }
1877
1878 static int
1879 jme_tx_tso(struct sk_buff *skb, __le16 *mss, u8 *flags)
1880 {
1881 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,17)
1882         *mss = cpu_to_le16(skb_shinfo(skb)->tso_size << TXDESC_MSS_SHIFT);
1883 #else
1884         *mss = cpu_to_le16(skb_shinfo(skb)->gso_size << TXDESC_MSS_SHIFT);
1885 #endif
1886         if (*mss) {
1887                 *flags |= TXFLAG_LSEN;
1888
1889                 if (skb->protocol == htons(ETH_P_IP)) {
1890                         struct iphdr *iph = ip_hdr(skb);
1891
1892                         iph->check = 0;
1893                         tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
1894                                                                 iph->daddr, 0,
1895                                                                 IPPROTO_TCP,
1896                                                                 0);
1897                 } else {
1898                         struct ipv6hdr *ip6h = ipv6_hdr(skb);
1899
1900                         tcp_hdr(skb)->check = ~csum_ipv6_magic(&ip6h->saddr,
1901                                                                 &ip6h->daddr, 0,
1902                                                                 IPPROTO_TCP,
1903                                                                 0);
1904                 }
1905
1906                 return 0;
1907         }
1908
1909         return 1;
1910 }
1911
1912 static void
1913 jme_tx_csum(struct jme_adapter *jme, struct sk_buff *skb, u8 *flags)
1914 {
1915 #ifdef CHECKSUM_PARTIAL
1916         if (skb->ip_summed == CHECKSUM_PARTIAL)
1917 #else
1918         if (skb->ip_summed == CHECKSUM_HW)
1919 #endif
1920         {
1921                 u8 ip_proto;
1922
1923 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,21)
1924                 if (skb->protocol == htons(ETH_P_IP))
1925                         ip_proto = ip_hdr(skb)->protocol;
1926                 else if (skb->protocol == htons(ETH_P_IPV6))
1927                         ip_proto = ipv6_hdr(skb)->nexthdr;
1928                 else
1929                         ip_proto = 0;
1930 #else
1931                 switch (skb->protocol) {
1932                 case htons(ETH_P_IP):
1933                         ip_proto = ip_hdr(skb)->protocol;
1934                         break;
1935                 case htons(ETH_P_IPV6):
1936                         ip_proto = ipv6_hdr(skb)->nexthdr;
1937                         break;
1938                 default:
1939                         ip_proto = 0;
1940                         break;
1941                 }
1942 #endif
1943
1944                 switch (ip_proto) {
1945                 case IPPROTO_TCP:
1946                         *flags |= TXFLAG_TCPCS;
1947                         break;
1948                 case IPPROTO_UDP:
1949                         *flags |= TXFLAG_UDPCS;
1950                         break;
1951                 default:
1952                         netif_err(jme, tx_err, jme->dev, "Error upper layer protocol\n");
1953                         break;
1954                 }
1955         }
1956 }
1957
1958 static inline void
1959 jme_tx_vlan(struct sk_buff *skb, __le16 *vlan, u8 *flags)
1960 {
1961         if (vlan_tx_tag_present(skb)) {
1962                 *flags |= TXFLAG_TAGON;
1963                 *vlan = cpu_to_le16(vlan_tx_tag_get(skb));
1964         }
1965 }
1966
1967 static int
1968 jme_fill_tx_desc(struct jme_adapter *jme, struct sk_buff *skb, int idx)
1969 {
1970         struct jme_ring *txring = &(jme->txring[0]);
1971         struct txdesc *txdesc;
1972         struct jme_buffer_info *txbi;
1973         u8 flags;
1974
1975         txdesc = (struct txdesc *)txring->desc + idx;
1976         txbi = txring->bufinf + idx;
1977
1978         txdesc->dw[0] = 0;
1979         txdesc->dw[1] = 0;
1980         txdesc->dw[2] = 0;
1981         txdesc->dw[3] = 0;
1982         txdesc->desc1.pktsize = cpu_to_le16(skb->len);
1983         /*
1984          * Set OWN bit at final.
1985          * When kernel transmit faster than NIC.
1986          * And NIC trying to send this descriptor before we tell
1987          * it to start sending this TX queue.
1988          * Other fields are already filled correctly.
1989          */
1990         wmb();
1991         flags = TXFLAG_OWN | TXFLAG_INT;
1992         /*
1993          * Set checksum flags while not tso
1994          */
1995         if (jme_tx_tso(skb, &txdesc->desc1.mss, &flags))
1996                 jme_tx_csum(jme, skb, &flags);
1997         jme_tx_vlan(skb, &txdesc->desc1.vlan, &flags);
1998         jme_map_tx_skb(jme, skb, idx);
1999         txdesc->desc1.flags = flags;
2000         /*
2001          * Set tx buffer info after telling NIC to send
2002          * For better tx_clean timing
2003          */
2004         wmb();
2005         txbi->nr_desc = skb_shinfo(skb)->nr_frags + 2;
2006         txbi->skb = skb;
2007         txbi->len = skb->len;
2008         txbi->start_xmit = jiffies;
2009         if (!txbi->start_xmit)
2010                 txbi->start_xmit = (0UL-1);
2011
2012         return 0;
2013 }
2014
2015 static void
2016 jme_stop_queue_if_full(struct jme_adapter *jme)
2017 {
2018         struct jme_ring *txring = &(jme->txring[0]);
2019         struct jme_buffer_info *txbi = txring->bufinf;
2020         int idx = atomic_read(&txring->next_to_clean);
2021
2022         txbi += idx;
2023
2024         smp_wmb();
2025         if (unlikely(atomic_read(&txring->nr_free) < (MAX_SKB_FRAGS+2))) {
2026                 netif_stop_queue(jme->dev);
2027                 netif_info(jme, tx_queued, jme->dev, "TX Queue Paused\n");
2028                 smp_wmb();
2029                 if (atomic_read(&txring->nr_free)
2030                         >= (jme->tx_wake_threshold)) {
2031                         netif_wake_queue(jme->dev);
2032                         netif_info(jme, tx_queued, jme->dev, "TX Queue Fast Waked\n");
2033                 }
2034         }
2035
2036         if (unlikely(txbi->start_xmit &&
2037                         (jiffies - txbi->start_xmit) >= TX_TIMEOUT &&
2038                         txbi->skb)) {
2039                 netif_stop_queue(jme->dev);
2040                 netif_info(jme, tx_queued, jme->dev, "TX Queue Stopped %d@%lu\n", idx, jiffies);
2041         }
2042 }
2043
2044 /*
2045  * This function is already protected by netif_tx_lock()
2046  */
2047
2048 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,31)
2049 static int
2050 #else
2051 static netdev_tx_t
2052 #endif
2053 jme_start_xmit(struct sk_buff *skb, struct net_device *netdev)
2054 {
2055         struct jme_adapter *jme = netdev_priv(netdev);
2056         int idx;
2057
2058         if (unlikely(jme_expand_header(jme, skb))) {
2059                 ++(NET_STAT(jme).tx_dropped);
2060                 return NETDEV_TX_OK;
2061         }
2062
2063         idx = jme_alloc_txdesc(jme, skb);
2064
2065         if (unlikely(idx < 0)) {
2066                 netif_stop_queue(netdev);
2067                 netif_err(jme, tx_err, jme->dev,
2068                           "BUG! Tx ring full when queue awake!\n");
2069
2070                 return NETDEV_TX_BUSY;
2071         }
2072
2073         jme_fill_tx_desc(jme, skb, idx);
2074
2075         jwrite32(jme, JME_TXCS, jme->reg_txcs |
2076                                 TXCS_SELECT_QUEUE0 |
2077                                 TXCS_QUEUE0S |
2078                                 TXCS_ENABLE);
2079 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,29)
2080         netdev->trans_start = jiffies;
2081 #endif
2082
2083         tx_dbg(jme, "xmit: %d+%d@%lu\n",
2084                idx, skb_shinfo(skb)->nr_frags + 2, jiffies);
2085         jme_stop_queue_if_full(jme);
2086
2087         return NETDEV_TX_OK;
2088 }
2089
2090 static int
2091 jme_set_macaddr(struct net_device *netdev, void *p)
2092 {
2093         struct jme_adapter *jme = netdev_priv(netdev);
2094         struct sockaddr *addr = p;
2095         u32 val;
2096
2097         if (netif_running(netdev))
2098                 return -EBUSY;
2099
2100         spin_lock_bh(&jme->macaddr_lock);
2101         memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
2102
2103         val = (addr->sa_data[3] & 0xff) << 24 |
2104               (addr->sa_data[2] & 0xff) << 16 |
2105               (addr->sa_data[1] & 0xff) <<  8 |
2106               (addr->sa_data[0] & 0xff);
2107         jwrite32(jme, JME_RXUMA_LO, val);
2108         val = (addr->sa_data[5] & 0xff) << 8 |
2109               (addr->sa_data[4] & 0xff);
2110         jwrite32(jme, JME_RXUMA_HI, val);
2111         spin_unlock_bh(&jme->macaddr_lock);
2112
2113         return 0;
2114 }
2115
2116 static void
2117 jme_set_multi(struct net_device *netdev)
2118 {
2119         struct jme_adapter *jme = netdev_priv(netdev);
2120         u32 mc_hash[2] = {};
2121 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,33)
2122         int i;
2123 #endif
2124
2125         spin_lock_bh(&jme->rxmcs_lock);
2126
2127         jme->reg_rxmcs |= RXMCS_BRDFRAME | RXMCS_UNIFRAME;
2128
2129         if (netdev->flags & IFF_PROMISC) {
2130                 jme->reg_rxmcs |= RXMCS_ALLFRAME;
2131         } else if (netdev->flags & IFF_ALLMULTI) {
2132                 jme->reg_rxmcs |= RXMCS_ALLMULFRAME;
2133         } else if (netdev->flags & IFF_MULTICAST) {
2134 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,34)
2135                 struct dev_mc_list *mclist;
2136 #else
2137                 struct netdev_hw_addr *ha;
2138 #endif
2139                 int bit_nr;
2140
2141                 jme->reg_rxmcs |= RXMCS_MULFRAME | RXMCS_MULFILTERED;
2142 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,33)
2143                 for (i = 0, mclist = netdev->mc_list;
2144                         mclist && i < netdev->mc_count;
2145                         ++i, mclist = mclist->next) {
2146 #elif LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,34)
2147                 netdev_for_each_mc_addr(mclist, netdev) {
2148 #else
2149                 netdev_for_each_mc_addr(ha, netdev) {
2150 #endif
2151 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,34)
2152                         bit_nr = ether_crc(ETH_ALEN, mclist->dmi_addr) & 0x3F;
2153 #else
2154                         bit_nr = ether_crc(ETH_ALEN, ha->addr) & 0x3F;
2155 #endif
2156                         mc_hash[bit_nr >> 5] |= 1 << (bit_nr & 0x1F);
2157                 }
2158
2159                 jwrite32(jme, JME_RXMCHT_LO, mc_hash[0]);
2160                 jwrite32(jme, JME_RXMCHT_HI, mc_hash[1]);
2161         }
2162
2163         wmb();
2164         jwrite32(jme, JME_RXMCS, jme->reg_rxmcs);
2165
2166         spin_unlock_bh(&jme->rxmcs_lock);
2167 }
2168
2169 static int
2170 jme_change_mtu(struct net_device *netdev, int new_mtu)
2171 {
2172         struct jme_adapter *jme = netdev_priv(netdev);
2173
2174         if (new_mtu == jme->old_mtu)
2175                 return 0;
2176
2177         if (((new_mtu + ETH_HLEN) > MAX_ETHERNET_JUMBO_PACKET_SIZE) ||
2178                 ((new_mtu) < IPV6_MIN_MTU))
2179                 return -EINVAL;
2180
2181         if (new_mtu > 4000) {
2182                 jme->reg_rxcs &= ~RXCS_FIFOTHNP;
2183                 jme->reg_rxcs |= RXCS_FIFOTHNP_64QW;
2184                 jme_restart_rx_engine(jme);
2185         } else {
2186                 jme->reg_rxcs &= ~RXCS_FIFOTHNP;
2187                 jme->reg_rxcs |= RXCS_FIFOTHNP_128QW;
2188                 jme_restart_rx_engine(jme);
2189         }
2190
2191         if (new_mtu > 1900) {
2192                 netdev->features &= ~(NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
2193                                 NETIF_F_TSO | NETIF_F_TSO6);
2194         } else {
2195                 if (test_bit(JME_FLAG_TXCSUM, &jme->flags))
2196                         netdev->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
2197                 if (test_bit(JME_FLAG_TSO, &jme->flags))
2198                         netdev->features |= NETIF_F_TSO | NETIF_F_TSO6;
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         /*
2544          * Check If user changed duplex only while force_media.
2545          * Hardware would not generate link change interrupt.
2546          */
2547         if (jme->mii_if.force_media &&
2548         ecmd->autoneg != AUTONEG_ENABLE &&
2549         (jme->mii_if.full_duplex != ecmd->duplex))
2550                 fdc = 1;
2551
2552         spin_lock_bh(&jme->phy_lock);
2553         rc = mii_ethtool_sset(&(jme->mii_if), ecmd);
2554         spin_unlock_bh(&jme->phy_lock);
2555
2556         if (!rc) {
2557                 if (fdc)
2558                         jme_reset_link(jme);
2559                 jme->old_ecmd = *ecmd;
2560                 set_bit(JME_FLAG_SSET, &jme->flags);
2561         }
2562
2563         return rc;
2564 }
2565
2566 static int
2567 jme_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd)
2568 {
2569         int rc;
2570         struct jme_adapter *jme = netdev_priv(netdev);
2571         struct mii_ioctl_data *mii_data = if_mii(rq);
2572         unsigned int duplex_chg;
2573
2574         if (cmd == SIOCSMIIREG) {
2575                 u16 val = mii_data->val_in;
2576                 if (!(val & (BMCR_RESET|BMCR_ANENABLE)) &&
2577                     (val & BMCR_SPEED1000))
2578                         return -EINVAL;
2579         }
2580
2581         spin_lock_bh(&jme->phy_lock);
2582         rc = generic_mii_ioctl(&jme->mii_if, mii_data, cmd, &duplex_chg);
2583         spin_unlock_bh(&jme->phy_lock);
2584
2585         if (!rc && (cmd == SIOCSMIIREG)) {
2586                 if (duplex_chg)
2587                         jme_reset_link(jme);
2588                 jme_get_settings(netdev, &jme->old_ecmd);
2589                 set_bit(JME_FLAG_SSET, &jme->flags);
2590         }
2591
2592         return rc;
2593 }
2594
2595 static u32
2596 jme_get_link(struct net_device *netdev)
2597 {
2598         struct jme_adapter *jme = netdev_priv(netdev);
2599         return jread32(jme, JME_PHY_LINK) & PHY_LINK_UP;
2600 }
2601
2602 static u32
2603 jme_get_msglevel(struct net_device *netdev)
2604 {
2605         struct jme_adapter *jme = netdev_priv(netdev);
2606         return jme->msg_enable;
2607 }
2608
2609 static void
2610 jme_set_msglevel(struct net_device *netdev, u32 value)
2611 {
2612         struct jme_adapter *jme = netdev_priv(netdev);
2613         jme->msg_enable = value;
2614 }
2615
2616 static u32
2617 jme_get_rx_csum(struct net_device *netdev)
2618 {
2619         struct jme_adapter *jme = netdev_priv(netdev);
2620         return jme->reg_rxmcs & RXMCS_CHECKSUM;
2621 }
2622
2623 static int
2624 jme_set_rx_csum(struct net_device *netdev, u32 on)
2625 {
2626         struct jme_adapter *jme = netdev_priv(netdev);
2627
2628         spin_lock_bh(&jme->rxmcs_lock);
2629         if (on)
2630                 jme->reg_rxmcs |= RXMCS_CHECKSUM;
2631         else
2632                 jme->reg_rxmcs &= ~RXMCS_CHECKSUM;
2633         jwrite32(jme, JME_RXMCS, jme->reg_rxmcs);
2634         spin_unlock_bh(&jme->rxmcs_lock);
2635
2636         return 0;
2637 }
2638
2639 static int
2640 jme_set_tx_csum(struct net_device *netdev, u32 on)
2641 {
2642         struct jme_adapter *jme = netdev_priv(netdev);
2643
2644         if (on) {
2645                 set_bit(JME_FLAG_TXCSUM, &jme->flags);
2646                 if (netdev->mtu <= 1900)
2647                         netdev->features |=
2648                                 NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
2649         } else {
2650                 clear_bit(JME_FLAG_TXCSUM, &jme->flags);
2651                 netdev->features &=
2652                                 ~(NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM);
2653         }
2654
2655         return 0;
2656 }
2657
2658 static int
2659 jme_set_tso(struct net_device *netdev, u32 on)
2660 {
2661         struct jme_adapter *jme = netdev_priv(netdev);
2662
2663         if (on) {
2664                 set_bit(JME_FLAG_TSO, &jme->flags);
2665                 if (netdev->mtu <= 1900)
2666                         netdev->features |= NETIF_F_TSO | NETIF_F_TSO6;
2667         } else {
2668                 clear_bit(JME_FLAG_TSO, &jme->flags);
2669                 netdev->features &= ~(NETIF_F_TSO | NETIF_F_TSO6);
2670         }
2671
2672         return 0;
2673 }
2674
2675 static int
2676 jme_nway_reset(struct net_device *netdev)
2677 {
2678         struct jme_adapter *jme = netdev_priv(netdev);
2679         jme_restart_an(jme);
2680         return 0;
2681 }
2682
2683 static u8
2684 jme_smb_read(struct jme_adapter *jme, unsigned int addr)
2685 {
2686         u32 val;
2687         int to;
2688
2689         val = jread32(jme, JME_SMBCSR);
2690         to = JME_SMB_BUSY_TIMEOUT;
2691         while ((val & SMBCSR_BUSY) && --to) {
2692                 msleep(1);
2693                 val = jread32(jme, JME_SMBCSR);
2694         }
2695         if (!to) {
2696                 netif_err(jme, hw, jme->dev, "SMB Bus Busy\n");
2697                 return 0xFF;
2698         }
2699
2700         jwrite32(jme, JME_SMBINTF,
2701                 ((addr << SMBINTF_HWADDR_SHIFT) & SMBINTF_HWADDR) |
2702                 SMBINTF_HWRWN_READ |
2703                 SMBINTF_HWCMD);
2704
2705         val = jread32(jme, JME_SMBINTF);
2706         to = JME_SMB_BUSY_TIMEOUT;
2707         while ((val & SMBINTF_HWCMD) && --to) {
2708                 msleep(1);
2709                 val = jread32(jme, JME_SMBINTF);
2710         }
2711         if (!to) {
2712                 netif_err(jme, hw, jme->dev, "SMB Bus Busy\n");
2713                 return 0xFF;
2714         }
2715
2716         return (val & SMBINTF_HWDATR) >> SMBINTF_HWDATR_SHIFT;
2717 }
2718
2719 static void
2720 jme_smb_write(struct jme_adapter *jme, unsigned int addr, u8 data)
2721 {
2722         u32 val;
2723         int to;
2724
2725         val = jread32(jme, JME_SMBCSR);
2726         to = JME_SMB_BUSY_TIMEOUT;
2727         while ((val & SMBCSR_BUSY) && --to) {
2728                 msleep(1);
2729                 val = jread32(jme, JME_SMBCSR);
2730         }
2731         if (!to) {
2732                 netif_err(jme, hw, jme->dev, "SMB Bus Busy\n");
2733                 return;
2734         }
2735
2736         jwrite32(jme, JME_SMBINTF,
2737                 ((data << SMBINTF_HWDATW_SHIFT) & SMBINTF_HWDATW) |
2738                 ((addr << SMBINTF_HWADDR_SHIFT) & SMBINTF_HWADDR) |
2739                 SMBINTF_HWRWN_WRITE |
2740                 SMBINTF_HWCMD);
2741
2742         val = jread32(jme, JME_SMBINTF);
2743         to = JME_SMB_BUSY_TIMEOUT;
2744         while ((val & SMBINTF_HWCMD) && --to) {
2745                 msleep(1);
2746                 val = jread32(jme, JME_SMBINTF);
2747         }
2748         if (!to) {
2749                 netif_err(jme, hw, jme->dev, "SMB Bus Busy\n");
2750                 return;
2751         }
2752
2753         mdelay(2);
2754 }
2755
2756 static int
2757 jme_get_eeprom_len(struct net_device *netdev)
2758 {
2759         struct jme_adapter *jme = netdev_priv(netdev);
2760         u32 val;
2761         val = jread32(jme, JME_SMBCSR);
2762         return (val & SMBCSR_EEPROMD) ? JME_SMB_LEN : 0;
2763 }
2764
2765 static int
2766 jme_get_eeprom(struct net_device *netdev,
2767                 struct ethtool_eeprom *eeprom, u8 *data)
2768 {
2769         struct jme_adapter *jme = netdev_priv(netdev);
2770         int i, offset = eeprom->offset, len = eeprom->len;
2771
2772         /*
2773          * ethtool will check the boundary for us
2774          */
2775         eeprom->magic = JME_EEPROM_MAGIC;
2776         for (i = 0 ; i < len ; ++i)
2777                 data[i] = jme_smb_read(jme, i + offset);
2778
2779         return 0;
2780 }
2781
2782 static int
2783 jme_set_eeprom(struct net_device *netdev,
2784                 struct ethtool_eeprom *eeprom, u8 *data)
2785 {
2786         struct jme_adapter *jme = netdev_priv(netdev);
2787         int i, offset = eeprom->offset, len = eeprom->len;
2788
2789         if (eeprom->magic != JME_EEPROM_MAGIC)
2790                 return -EINVAL;
2791
2792         /*
2793          * ethtool will check the boundary for us
2794          */
2795         for (i = 0 ; i < len ; ++i)
2796                 jme_smb_write(jme, i + offset, data[i]);
2797
2798         return 0;
2799 }
2800
2801 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,18)
2802 static struct ethtool_ops jme_ethtool_ops = {
2803 #else
2804 static const struct ethtool_ops jme_ethtool_ops = {
2805 #endif
2806         .get_drvinfo            = jme_get_drvinfo,
2807         .get_regs_len           = jme_get_regs_len,
2808         .get_regs               = jme_get_regs,
2809         .get_coalesce           = jme_get_coalesce,
2810         .set_coalesce           = jme_set_coalesce,
2811         .get_pauseparam         = jme_get_pauseparam,
2812         .set_pauseparam         = jme_set_pauseparam,
2813         .get_wol                = jme_get_wol,
2814         .set_wol                = jme_set_wol,
2815         .get_settings           = jme_get_settings,
2816         .set_settings           = jme_set_settings,
2817         .get_link               = jme_get_link,
2818         .get_msglevel           = jme_get_msglevel,
2819         .set_msglevel           = jme_set_msglevel,
2820         .get_rx_csum            = jme_get_rx_csum,
2821         .set_rx_csum            = jme_set_rx_csum,
2822         .set_tx_csum            = jme_set_tx_csum,
2823         .set_tso                = jme_set_tso,
2824         .set_sg                 = ethtool_op_set_sg,
2825         .nway_reset             = jme_nway_reset,
2826         .get_eeprom_len         = jme_get_eeprom_len,
2827         .get_eeprom             = jme_get_eeprom,
2828         .set_eeprom             = jme_set_eeprom,
2829 };
2830
2831 static int
2832 jme_pci_dma64(struct pci_dev *pdev)
2833 {
2834         if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250 &&
2835 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,29)
2836             !pci_set_dma_mask(pdev, DMA_BIT_MASK(64))
2837 #else
2838             !pci_set_dma_mask(pdev, DMA_64BIT_MASK)
2839 #endif
2840            )
2841 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,29)
2842                 if (!pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)))
2843 #else
2844                 if (!pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK))
2845 #endif
2846                         return 1;
2847
2848         if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250 &&
2849 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,29)
2850             !pci_set_dma_mask(pdev, DMA_BIT_MASK(40))
2851 #else
2852             !pci_set_dma_mask(pdev, DMA_40BIT_MASK)
2853 #endif
2854            )
2855 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,29)
2856                 if (!pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(40)))
2857 #else
2858                 if (!pci_set_consistent_dma_mask(pdev, DMA_40BIT_MASK))
2859 #endif
2860                         return 1;
2861
2862 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,29)
2863         if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32)))
2864                 if (!pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)))
2865 #else
2866         if (!pci_set_dma_mask(pdev, DMA_32BIT_MASK))
2867                 if (!pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK))
2868 #endif
2869                         return 0;
2870
2871         return -1;
2872 }
2873
2874 static inline void
2875 jme_phy_init(struct jme_adapter *jme)
2876 {
2877         u16 reg26;
2878
2879         reg26 = jme_mdio_read(jme->dev, jme->mii_if.phy_id, 26);
2880         jme_mdio_write(jme->dev, jme->mii_if.phy_id, 26, reg26 | 0x1000);
2881 }
2882
2883 static inline void
2884 jme_check_hw_ver(struct jme_adapter *jme)
2885 {
2886         u32 chipmode;
2887
2888         chipmode = jread32(jme, JME_CHIPMODE);
2889
2890         jme->fpgaver = (chipmode & CM_FPGAVER_MASK) >> CM_FPGAVER_SHIFT;
2891         jme->chiprev = (chipmode & CM_CHIPREV_MASK) >> CM_CHIPREV_SHIFT;
2892         jme->chip_main_rev = jme->chiprev & 0xF;
2893         jme->chip_sub_rev = (jme->chiprev >> 4) & 0xF;
2894 }
2895
2896 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,29)
2897 static const struct net_device_ops jme_netdev_ops = {
2898         .ndo_open               = jme_open,
2899         .ndo_stop               = jme_close,
2900         .ndo_validate_addr      = eth_validate_addr,
2901         .ndo_do_ioctl           = jme_ioctl,
2902         .ndo_start_xmit         = jme_start_xmit,
2903         .ndo_set_mac_address    = jme_set_macaddr,
2904         .ndo_set_multicast_list = jme_set_multi,
2905         .ndo_change_mtu         = jme_change_mtu,
2906         .ndo_tx_timeout         = jme_tx_timeout,
2907         .ndo_vlan_rx_register   = jme_vlan_rx_register,
2908 };
2909 #endif
2910
2911 static int __devinit
2912 jme_init_one(struct pci_dev *pdev,
2913              const struct pci_device_id *ent)
2914 {
2915         int rc = 0, using_dac, i;
2916         struct net_device *netdev;
2917         struct jme_adapter *jme;
2918         u16 bmcr, bmsr;
2919         u32 apmc;
2920
2921         /*
2922          * set up PCI device basics
2923          */
2924         rc = pci_enable_device(pdev);
2925         if (rc) {
2926                 pr_err("Cannot enable PCI device\n");
2927                 goto err_out;
2928         }
2929
2930         using_dac = jme_pci_dma64(pdev);
2931         if (using_dac < 0) {
2932                 pr_err("Cannot set PCI DMA Mask\n");
2933                 rc = -EIO;
2934                 goto err_out_disable_pdev;
2935         }
2936
2937         if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
2938                 pr_err("No PCI resource region found\n");
2939                 rc = -ENOMEM;
2940                 goto err_out_disable_pdev;
2941         }
2942
2943         rc = pci_request_regions(pdev, DRV_NAME);
2944         if (rc) {
2945                 pr_err("Cannot obtain PCI resource region\n");
2946                 goto err_out_disable_pdev;
2947         }
2948
2949         pci_set_master(pdev);
2950
2951         /*
2952          * alloc and init net device
2953          */
2954         netdev = alloc_etherdev(sizeof(*jme));
2955         if (!netdev) {
2956                 pr_err("Cannot allocate netdev structure\n");
2957                 rc = -ENOMEM;
2958                 goto err_out_release_regions;
2959         }
2960 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,29)
2961         netdev->netdev_ops = &jme_netdev_ops;
2962 #else
2963         netdev->open                    = jme_open;
2964         netdev->stop                    = jme_close;
2965         netdev->do_ioctl                = jme_ioctl;
2966         netdev->hard_start_xmit         = jme_start_xmit;
2967         netdev->set_mac_address         = jme_set_macaddr;
2968         netdev->set_multicast_list      = jme_set_multi;
2969         netdev->change_mtu              = jme_change_mtu;
2970         netdev->tx_timeout              = jme_tx_timeout;
2971         netdev->vlan_rx_register        = jme_vlan_rx_register;
2972 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,21)
2973         netdev->vlan_rx_kill_vid        = jme_vlan_rx_kill_vid;
2974 #endif
2975         NETDEV_GET_STATS(netdev, &jme_get_stats);
2976 #endif
2977         netdev->ethtool_ops             = &jme_ethtool_ops;
2978         netdev->watchdog_timeo          = TX_TIMEOUT;
2979         netdev->features                =       NETIF_F_IP_CSUM |
2980                                                 NETIF_F_IPV6_CSUM |
2981                                                 NETIF_F_SG |
2982                                                 NETIF_F_TSO |
2983                                                 NETIF_F_TSO6 |
2984                                                 NETIF_F_HW_VLAN_TX |
2985                                                 NETIF_F_HW_VLAN_RX;
2986         if (using_dac)
2987                 netdev->features        |=      NETIF_F_HIGHDMA;
2988
2989         SET_NETDEV_DEV(netdev, &pdev->dev);
2990         pci_set_drvdata(pdev, netdev);
2991
2992         /*
2993          * init adapter info
2994          */
2995         jme = netdev_priv(netdev);
2996         jme->pdev = pdev;
2997         jme->dev = netdev;
2998         jme->jme_rx = netif_rx;
2999         jme->jme_vlan_rx = vlan_hwaccel_rx;
3000         jme->old_mtu = netdev->mtu = 1500;
3001         jme->phylink = 0;
3002         jme->tx_ring_size = 1 << 10;
3003         jme->tx_ring_mask = jme->tx_ring_size - 1;
3004         jme->tx_wake_threshold = 1 << 9;
3005         jme->rx_ring_size = 1 << 9;
3006         jme->rx_ring_mask = jme->rx_ring_size - 1;
3007         jme->msg_enable = JME_DEF_MSG_ENABLE;
3008         jme->regs = ioremap(pci_resource_start(pdev, 0),
3009                              pci_resource_len(pdev, 0));
3010         if (!(jme->regs)) {
3011                 pr_err("Mapping PCI resource region error\n");
3012                 rc = -ENOMEM;
3013                 goto err_out_free_netdev;
3014         }
3015
3016         if (no_pseudohp) {
3017                 apmc = jread32(jme, JME_APMC) & ~JME_APMC_PSEUDO_HP_EN;
3018                 jwrite32(jme, JME_APMC, apmc);
3019         } else if (force_pseudohp) {
3020                 apmc = jread32(jme, JME_APMC) | JME_APMC_PSEUDO_HP_EN;
3021                 jwrite32(jme, JME_APMC, apmc);
3022         }
3023
3024         NETIF_NAPI_SET(netdev, &jme->napi, jme_poll, jme->rx_ring_size >> 2)
3025
3026         spin_lock_init(&jme->phy_lock);
3027         spin_lock_init(&jme->macaddr_lock);
3028         spin_lock_init(&jme->rxmcs_lock);
3029
3030         atomic_set(&jme->link_changing, 1);
3031         atomic_set(&jme->rx_cleaning, 1);
3032         atomic_set(&jme->tx_cleaning, 1);
3033         atomic_set(&jme->rx_empty, 1);
3034
3035         tasklet_init(&jme->pcc_task,
3036                      jme_pcc_tasklet,
3037                      (unsigned long) jme);
3038         tasklet_init(&jme->linkch_task,
3039                      jme_link_change_tasklet,
3040                      (unsigned long) jme);
3041         tasklet_init(&jme->txclean_task,
3042                      jme_tx_clean_tasklet,
3043                      (unsigned long) jme);
3044         tasklet_init(&jme->rxclean_task,
3045                      jme_rx_clean_tasklet,
3046                      (unsigned long) jme);
3047         tasklet_init(&jme->rxempty_task,
3048                      jme_rx_empty_tasklet,
3049                      (unsigned long) jme);
3050         tasklet_disable_nosync(&jme->linkch_task);
3051         tasklet_disable_nosync(&jme->txclean_task);
3052         tasklet_disable_nosync(&jme->rxclean_task);
3053         tasklet_disable_nosync(&jme->rxempty_task);
3054         jme->dpi.cur = PCC_P1;
3055
3056         jme->reg_ghc = 0;
3057         jme->reg_rxcs = RXCS_DEFAULT;
3058         jme->reg_rxmcs = RXMCS_DEFAULT;
3059         jme->reg_txpfc = 0;
3060         jme->reg_pmcs = PMCS_MFEN;
3061         set_bit(JME_FLAG_TXCSUM, &jme->flags);
3062         set_bit(JME_FLAG_TSO, &jme->flags);
3063
3064         /*
3065          * Get Max Read Req Size from PCI Config Space
3066          */
3067         pci_read_config_byte(pdev, PCI_DCSR_MRRS, &jme->mrrs);
3068         jme->mrrs &= PCI_DCSR_MRRS_MASK;
3069         switch (jme->mrrs) {
3070         case MRRS_128B:
3071                 jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_128B;
3072                 break;
3073         case MRRS_256B:
3074                 jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_256B;
3075                 break;
3076         default:
3077                 jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_512B;
3078                 break;
3079         }
3080
3081         /*
3082          * Must check before reset_mac_processor
3083          */
3084         jme_check_hw_ver(jme);
3085         jme->mii_if.dev = netdev;
3086         if (jme->fpgaver) {
3087                 jme->mii_if.phy_id = 0;
3088                 for (i = 1 ; i < 32 ; ++i) {
3089                         bmcr = jme_mdio_read(netdev, i, MII_BMCR);
3090                         bmsr = jme_mdio_read(netdev, i, MII_BMSR);
3091                         if (bmcr != 0xFFFFU && (bmcr != 0 || bmsr != 0)) {
3092                                 jme->mii_if.phy_id = i;
3093                                 break;
3094                         }
3095                 }
3096
3097                 if (!jme->mii_if.phy_id) {
3098                         rc = -EIO;
3099                         pr_err("Can not find phy_id\n");
3100                         goto err_out_unmap;
3101                 }
3102
3103                 jme->reg_ghc |= GHC_LINK_POLL;
3104         } else {
3105                 jme->mii_if.phy_id = 1;
3106         }
3107         if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250)
3108                 jme->mii_if.supports_gmii = true;
3109         else
3110                 jme->mii_if.supports_gmii = false;
3111         jme->mii_if.phy_id_mask = 0x1F;
3112         jme->mii_if.reg_num_mask = 0x1F;
3113         jme->mii_if.mdio_read = jme_mdio_read;
3114         jme->mii_if.mdio_write = jme_mdio_write;
3115
3116         jme_clear_pm(jme);
3117         jme_set_phyfifo_5level(jme);
3118         pci_read_config_byte(pdev, PCI_REVISION_ID, &jme->pcirev);
3119         if (!jme->fpgaver)
3120                 jme_phy_init(jme);
3121         jme_phy_off(jme);
3122
3123         /*
3124          * Reset MAC processor and reload EEPROM for MAC Address
3125          */
3126         jme_reset_mac_processor(jme);
3127         rc = jme_reload_eeprom(jme);
3128         if (rc) {
3129                 pr_err("Reload eeprom for reading MAC Address error\n");
3130                 goto err_out_unmap;
3131         }
3132         jme_load_macaddr(netdev);
3133
3134         /*
3135          * Tell stack that we are not ready to work until open()
3136          */
3137         netif_carrier_off(netdev);
3138
3139         rc = register_netdev(netdev);
3140         if (rc) {
3141                 pr_err("Cannot register net device\n");
3142                 goto err_out_unmap;
3143         }
3144
3145         netif_info(jme, probe, jme->dev, "%s%s chipver:%x pcirev:%x "
3146                    "macaddr: %02x:%02x:%02x:%02x:%02x:%02x\n",
3147                    (jme->pdev->device == PCI_DEVICE_ID_JMICRON_JMC250) ?
3148                    "JMC250 Gigabit Ethernet" :
3149                    (jme->pdev->device == PCI_DEVICE_ID_JMICRON_JMC260) ?
3150                    "JMC260 Fast Ethernet" : "Unknown",
3151                    (jme->fpgaver != 0) ? " (FPGA)" : "",
3152                    (jme->fpgaver != 0) ? jme->fpgaver : jme->chiprev,
3153                    jme->pcirev,
3154                    netdev->dev_addr[0],
3155                    netdev->dev_addr[1],
3156                    netdev->dev_addr[2],
3157                    netdev->dev_addr[3],
3158                    netdev->dev_addr[4],
3159                    netdev->dev_addr[5]);
3160
3161         return 0;
3162
3163 err_out_unmap:
3164         iounmap(jme->regs);
3165 err_out_free_netdev:
3166         pci_set_drvdata(pdev, NULL);
3167         free_netdev(netdev);
3168 err_out_release_regions:
3169         pci_release_regions(pdev);
3170 err_out_disable_pdev:
3171         pci_disable_device(pdev);
3172 err_out:
3173         return rc;
3174 }
3175
3176 static void __devexit
3177 jme_remove_one(struct pci_dev *pdev)
3178 {
3179         struct net_device *netdev = pci_get_drvdata(pdev);
3180         struct jme_adapter *jme = netdev_priv(netdev);
3181
3182         unregister_netdev(netdev);
3183         iounmap(jme->regs);
3184         pci_set_drvdata(pdev, NULL);
3185         free_netdev(netdev);
3186         pci_release_regions(pdev);
3187         pci_disable_device(pdev);
3188
3189 }
3190
3191 static void
3192 jme_shutdown(struct pci_dev *pdev)
3193 {
3194         struct net_device *netdev = pci_get_drvdata(pdev);
3195         struct jme_adapter *jme = netdev_priv(netdev);
3196
3197         jme_powersave_phy(jme);
3198 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,27)
3199         pci_enable_wake(pdev, PCI_D3hot, true);
3200 #else
3201         pci_pme_active(pdev, true);
3202 #endif
3203 }
3204
3205 #ifdef CONFIG_PM
3206 static int
3207 jme_suspend(struct pci_dev *pdev, pm_message_t state)
3208 {
3209         struct net_device *netdev = pci_get_drvdata(pdev);
3210         struct jme_adapter *jme = netdev_priv(netdev);
3211
3212         atomic_dec(&jme->link_changing);
3213
3214         netif_device_detach(netdev);
3215         netif_stop_queue(netdev);
3216         jme_stop_irq(jme);
3217
3218         tasklet_disable(&jme->txclean_task);
3219         tasklet_disable(&jme->rxclean_task);
3220         tasklet_disable(&jme->rxempty_task);
3221
3222         if (netif_carrier_ok(netdev)) {
3223                 if (test_bit(JME_FLAG_POLL, &jme->flags))
3224                         jme_polling_mode(jme);
3225
3226                 jme_stop_pcc_timer(jme);
3227                 jme_reset_ghc_speed(jme);
3228                 jme_disable_rx_engine(jme);
3229                 jme_disable_tx_engine(jme);
3230                 jme_reset_mac_processor(jme);
3231                 jme_free_rx_resources(jme);
3232                 jme_free_tx_resources(jme);
3233                 netif_carrier_off(netdev);
3234                 jme->phylink = 0;
3235         }
3236
3237         tasklet_enable(&jme->txclean_task);
3238         tasklet_hi_enable(&jme->rxclean_task);
3239         tasklet_hi_enable(&jme->rxempty_task);
3240
3241         pci_save_state(pdev);
3242         jme_powersave_phy(jme);
3243         pci_enable_wake(pdev, PCI_D3hot, true);
3244         pci_set_power_state(pdev, PCI_D3hot);
3245
3246         return 0;
3247 }
3248
3249 static int
3250 jme_resume(struct pci_dev *pdev)
3251 {
3252         struct net_device *netdev = pci_get_drvdata(pdev);
3253         struct jme_adapter *jme = netdev_priv(netdev);
3254
3255         jme_clear_pm(jme);
3256         pci_restore_state(pdev);
3257
3258         jme_phy_on(jme);
3259         if (test_bit(JME_FLAG_SSET, &jme->flags))
3260                 jme_set_settings(netdev, &jme->old_ecmd);
3261         else
3262                 jme_reset_phy_processor(jme);
3263
3264         jme_start_irq(jme);
3265         netif_device_attach(netdev);
3266
3267         atomic_inc(&jme->link_changing);
3268
3269         jme_reset_link(jme);
3270
3271         return 0;
3272 }
3273 #endif
3274
3275 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,24)
3276 static struct pci_device_id jme_pci_tbl[] = {
3277 #else
3278 static DEFINE_PCI_DEVICE_TABLE(jme_pci_tbl) = {
3279 #endif
3280         { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMC250) },
3281         { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMC260) },
3282         { }
3283 };
3284
3285 static struct pci_driver jme_driver = {
3286         .name           = DRV_NAME,
3287         .id_table       = jme_pci_tbl,
3288         .probe          = jme_init_one,
3289         .remove         = __devexit_p(jme_remove_one),
3290 #ifdef CONFIG_PM
3291         .suspend        = jme_suspend,
3292         .resume         = jme_resume,
3293 #endif /* CONFIG_PM */
3294         .shutdown       = jme_shutdown,
3295 };
3296
3297 static int __init
3298 jme_init_module(void)
3299 {
3300         pr_info("JMicron JMC2XX ethernet driver version %s\n", DRV_VERSION);
3301         return pci_register_driver(&jme_driver);
3302 }
3303
3304 static void __exit
3305 jme_cleanup_module(void)
3306 {
3307         pci_unregister_driver(&jme_driver);
3308 }
3309
3310 module_init(jme_init_module);
3311 module_exit(jme_cleanup_module);
3312
3313 MODULE_AUTHOR("Guo-Fu Tseng <cooldavid@cooldavid.org>");
3314 MODULE_DESCRIPTION("JMicron JMC2x0 PCI Express Ethernet driver");
3315 MODULE_LICENSE("GPL");
3316 MODULE_VERSION(DRV_VERSION);
3317 MODULE_DEVICE_TABLE(pci, jme_pci_tbl);
3318