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 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  26
  27 #include <linux/module.h>
  28 #include <linux/kernel.h>
  29 #include <linux/pci.h>
  30 #include <linux/netdevice.h>
  31 #include <linux/etherdevice.h>
  32 #include <linux/ethtool.h>
  33 #include <linux/mii.h>
  34 #include <linux/crc32.h>
  35 #include <linux/delay.h>
  36 #include <linux/spinlock.h>
  37 #include <linux/in.h>
  38 #include <linux/ip.h>
  39 #include <linux/ipv6.h>
  40 #include <linux/tcp.h>
  41 #include <linux/udp.h>
  42 #include <linux/if_vlan.h>
  43 #include <linux/slab.h>
  44 #include <net/ip6_checksum.h>
  45 #include "jme.h"
  46
  47 static int force_pseudohp = -1;
  48 static int no_pseudohp = -1;
  49 static int no_extplug = -1;
  50 module_param(force_pseudohp, int, 0);
  51 MODULE_PARM_DESC(force_pseudohp,
  52         "Enable pseudo hot-plug feature manually by driver instead of BIOS.");
  53 module_param(no_pseudohp, int, 0);
  54 MODULE_PARM_DESC(no_pseudohp, "Disable pseudo hot-plug feature.");
  55 module_param(no_extplug, int, 0);
  56 MODULE_PARM_DESC(no_extplug,
  57         "Do not use external plug signal for pseudo hot-plug.");
  58
  59 static int
  60 jme_mdio_read(struct net_device *netdev, int phy, int reg)
  61 {
  62         struct jme_adapter *jme = netdev_priv(netdev);
  63         int i, val, again = (reg == MII_BMSR) ? 1 : 0;
  64
  65 read_again:
  66         jwrite32(jme, JME_SMI, SMI_OP_REQ |
  67                                 smi_phy_addr(phy) |
  68                                 smi_reg_addr(reg));
  69
  70         wmb();
  71         for (i = JME_PHY_TIMEOUT * 50 ; i > 0 ; --i) {
  72                 udelay(20);
  73                 val = jread32(jme, JME_SMI);
  74                 if ((val & SMI_OP_REQ) == 0)
  75                         break;
  76         }
  77
  78         if (i == 0) {
  79                 pr_err("phy(%d) read timeout : %d\n", phy, reg);
  80                 return 0;
  81         }
  82
  83         if (again--)
  84                 goto read_again;
  85
  86         return (val & SMI_DATA_MASK) >> SMI_DATA_SHIFT;
  87 }
  88
  89 static void
  90 jme_mdio_write(struct net_device *netdev,
  91                                 int phy, int reg, int val)
  92 {
  93         struct jme_adapter *jme = netdev_priv(netdev);
  94         int i;
  95
  96         jwrite32(jme, JME_SMI, SMI_OP_WRITE | SMI_OP_REQ |
  97                 ((val << SMI_DATA_SHIFT) & SMI_DATA_MASK) |
  98                 smi_phy_addr(phy) | smi_reg_addr(reg));
  99
 100         wmb();
 101         for (i = JME_PHY_TIMEOUT * 50 ; i > 0 ; --i) {
 102                 udelay(20);
 103                 if ((jread32(jme, JME_SMI) & SMI_OP_REQ) == 0)
 104                         break;
 105         }
 106
 107         if (i == 0)
 108                 pr_err("phy(%d) write timeout : %d\n", phy, reg);
 109 }
 110
 111 static inline void
 112 jme_reset_phy_processor(struct jme_adapter *jme)
 113 {
 114         u32 val;
 115
 116         jme_mdio_write(jme->dev,
 117                         jme->mii_if.phy_id,
 118                         MII_ADVERTISE, ADVERTISE_ALL |
 119                         ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
 120
 121         if (jme->pdev->device == PCI_DEVICE_ID_JMICRON_JMC250)
 122                 jme_mdio_write(jme->dev,
 123                                 jme->mii_if.phy_id,
 124                                 MII_CTRL1000,
 125                                 ADVERTISE_1000FULL | ADVERTISE_1000HALF);
 126
 127         val = jme_mdio_read(jme->dev,
 128                                 jme->mii_if.phy_id,
 129                                 MII_BMCR);
 130
 131         jme_mdio_write(jme->dev,
 132                         jme->mii_if.phy_id,
 133                         MII_BMCR, val | BMCR_RESET);
 134 }
 135
 136 static void
 137 jme_setup_wakeup_frame(struct jme_adapter *jme,
 138                        const u32 *mask, u32 crc, int fnr)
 139 {
 140         int i;
 141
 142         /*
 143          * Setup CRC pattern
 144          */
 145         jwrite32(jme, JME_WFOI, WFOI_CRC_SEL | (fnr & WFOI_FRAME_SEL));
 146         wmb();
 147         jwrite32(jme, JME_WFODP, crc);
 148         wmb();
 149
 150         /*
 151          * Setup Mask
 152          */
 153         for (i = 0 ; i < WAKEUP_FRAME_MASK_DWNR ; ++i) {
 154                 jwrite32(jme, JME_WFOI,
 155                                 ((i << WFOI_MASK_SHIFT) & WFOI_MASK_SEL) |
 156                                 (fnr & WFOI_FRAME_SEL));
 157                 wmb();
 158                 jwrite32(jme, JME_WFODP, mask[i]);
 159                 wmb();
 160         }
 161 }
 162
 163 static inline void
 164 jme_mac_rxclk_off(struct jme_adapter *jme)
 165 {
 166         jme->reg_gpreg1 |= GPREG1_RXCLKOFF;
 167         jwrite32f(jme, JME_GPREG1, jme->reg_gpreg1);
 168 }
 169
 170 static inline void
 171 jme_mac_rxclk_on(struct jme_adapter *jme)
 172 {
 173         jme->reg_gpreg1 &= ~GPREG1_RXCLKOFF;
 174         jwrite32f(jme, JME_GPREG1, jme->reg_gpreg1);
 175 }
 176
 177 static inline void
 178 jme_mac_txclk_off(struct jme_adapter *jme)
 179 {
 180         jme->reg_ghc &= ~(GHC_TO_CLK_SRC | GHC_TXMAC_CLK_SRC);
 181         jwrite32f(jme, JME_GHC, jme->reg_ghc);
 182 }
 183
 184 static inline void
 185 jme_mac_txclk_on(struct jme_adapter *jme)
 186 {
 187         u32 speed = jme->reg_ghc & GHC_SPEED;
 188         if (speed == GHC_SPEED_1000M)
 189                 jme->reg_ghc |= GHC_TO_CLK_GPHY | GHC_TXMAC_CLK_GPHY;
 190         else
 191                 jme->reg_ghc |= GHC_TO_CLK_PCIE | GHC_TXMAC_CLK_PCIE;
 192         jwrite32f(jme, JME_GHC, jme->reg_ghc);
 193 }
 194
 195 static inline void
 196 jme_reset_ghc_speed(struct jme_adapter *jme)
 197 {
 198         jme->reg_ghc &= ~(GHC_SPEED | GHC_DPX);
 199         jwrite32f(jme, JME_GHC, jme->reg_ghc);
 200 }
 201
 202 static inline void
 203 jme_reset_250A2_workaround(struct jme_adapter *jme)
 204 {
 205         jme->reg_gpreg1 &= ~(GPREG1_HALFMODEPATCH |
 206                              GPREG1_RSSPATCH);
 207         jwrite32(jme, JME_GPREG1, jme->reg_gpreg1);
 208 }
 209
 210 static inline void
 211 jme_assert_ghc_reset(struct jme_adapter *jme)
 212 {
 213         jme->reg_ghc |= GHC_SWRST;
 214         jwrite32f(jme, JME_GHC, jme->reg_ghc);
 215 }
 216
 217 static inline void
 218 jme_clear_ghc_reset(struct jme_adapter *jme)
 219 {
 220         jme->reg_ghc &= ~GHC_SWRST;
 221         jwrite32f(jme, JME_GHC, jme->reg_ghc);
 222 }
 223
 224 static inline void
 225 jme_reset_mac_processor(struct jme_adapter *jme)
 226 {
 227         static const u32 mask[WAKEUP_FRAME_MASK_DWNR] = {0, 0, 0, 0};
 228         u32 crc = 0xCDCDCDCD;
 229         u32 gpreg0;
 230         int i;
 231
 232         jme_reset_ghc_speed(jme);
 233         jme_reset_250A2_workaround(jme);
 234
 235         jme_mac_rxclk_on(jme);
 236         jme_mac_txclk_on(jme);
 237         udelay(1);
 238         jme_assert_ghc_reset(jme);
 239         udelay(1);
 240         jme_mac_rxclk_off(jme);
 241         jme_mac_txclk_off(jme);
 242         udelay(1);
 243         jme_clear_ghc_reset(jme);
 244         udelay(1);
 245         jme_mac_rxclk_on(jme);
 246         jme_mac_txclk_on(jme);
 247         udelay(1);
 248         jme_mac_rxclk_off(jme);
 249         jme_mac_txclk_off(jme);
 250
 251         jwrite32(jme, JME_RXDBA_LO, 0x00000000);
 252         jwrite32(jme, JME_RXDBA_HI, 0x00000000);
 253         jwrite32(jme, JME_RXQDC, 0x00000000);
 254         jwrite32(jme, JME_RXNDA, 0x00000000);
 255         jwrite32(jme, JME_TXDBA_LO, 0x00000000);
 256         jwrite32(jme, JME_TXDBA_HI, 0x00000000);
 257         jwrite32(jme, JME_TXQDC, 0x00000000);
 258         jwrite32(jme, JME_TXNDA, 0x00000000);
 259
 260         jwrite32(jme, JME_RXMCHT_LO, 0x00000000);
 261         jwrite32(jme, JME_RXMCHT_HI, 0x00000000);
 262         for (i = 0 ; i < WAKEUP_FRAME_NR ; ++i)
 263                 jme_setup_wakeup_frame(jme, mask, crc, i);
 264         if (jme->fpgaver)
 265                 gpreg0 = GPREG0_DEFAULT | GPREG0_LNKINTPOLL;
 266         else
 267                 gpreg0 = GPREG0_DEFAULT;
 268         jwrite32(jme, JME_GPREG0, gpreg0);
 269 }
 270
 271 static inline void
 272 jme_clear_pm(struct jme_adapter *jme)
 273 {
 274         jwrite32(jme, JME_PMCS, 0xFFFF0000 | jme->reg_pmcs);
 275         pci_set_power_state(jme->pdev, PCI_D0);
 276         pci_enable_wake(jme->pdev, PCI_D0, false);
 277 }
 278
 279 static int
 280 jme_reload_eeprom(struct jme_adapter *jme)
 281 {
 282         u32 val;
 283         int i;
 284
 285         val = jread32(jme, JME_SMBCSR);
 286
 287         if (val & SMBCSR_EEPROMD) {
 288                 val |= SMBCSR_CNACK;
 289                 jwrite32(jme, JME_SMBCSR, val);
 290                 val |= SMBCSR_RELOAD;
 291                 jwrite32(jme, JME_SMBCSR, val);
 292                 mdelay(12);
 293
 294                 for (i = JME_EEPROM_RELOAD_TIMEOUT; i > 0; --i) {
 295                         mdelay(1);
 296                         if ((jread32(jme, JME_SMBCSR) & SMBCSR_RELOAD) == 0)
 297                                 break;
 298                 }
 299
 300                 if (i == 0) {
 301                         pr_err("eeprom reload timeout\n");
 302                         return -EIO;
 303                 }
 304         }
 305
 306         return 0;
 307 }
 308
 309 static void
 310 jme_load_macaddr(struct net_device *netdev)
 311 {
 312         struct jme_adapter *jme = netdev_priv(netdev);
 313         unsigned char macaddr[6];
 314         u32 val;
 315
 316         spin_lock_bh(&jme->macaddr_lock);
 317         val = jread32(jme, JME_RXUMA_LO);
 318         macaddr[0] = (val >>  0) & 0xFF;
 319         macaddr[1] = (val >>  8) & 0xFF;
 320         macaddr[2] = (val >> 16) & 0xFF;
 321         macaddr[3] = (val >> 24) & 0xFF;
 322         val = jread32(jme, JME_RXUMA_HI);
 323         macaddr[4] = (val >>  0) & 0xFF;
 324         macaddr[5] = (val >>  8) & 0xFF;
 325         memcpy(netdev->dev_addr, macaddr, 6);
 326         spin_unlock_bh(&jme->macaddr_lock);
 327 }
 328
 329 static inline void
 330 jme_set_rx_pcc(struct jme_adapter *jme, int p)
 331 {
 332         switch (p) {
 333         case PCC_OFF:
 334                 jwrite32(jme, JME_PCCRX0,
 335                         ((PCC_OFF_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
 336                         ((PCC_OFF_CNT << PCCRX_SHIFT) & PCCRX_MASK));
 337                 break;
 338         case PCC_P1:
 339                 jwrite32(jme, JME_PCCRX0,
 340                         ((PCC_P1_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
 341                         ((PCC_P1_CNT << PCCRX_SHIFT) & PCCRX_MASK));
 342                 break;
 343         case PCC_P2:
 344                 jwrite32(jme, JME_PCCRX0,
 345                         ((PCC_P2_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
 346                         ((PCC_P2_CNT << PCCRX_SHIFT) & PCCRX_MASK));
 347                 break;
 348         case PCC_P3:
 349                 jwrite32(jme, JME_PCCRX0,
 350                         ((PCC_P3_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
 351                         ((PCC_P3_CNT << PCCRX_SHIFT) & PCCRX_MASK));
 352                 break;
 353         default:
 354                 break;
 355         }
 356         wmb();
 357
 358         if (!(test_bit(JME_FLAG_POLL, &jme->flags)))
 359                 netif_info(jme, rx_status, jme->dev, "Switched to PCC_P%d\n", p);
 360 }
 361
 362 static void
 363 jme_start_irq(struct jme_adapter *jme)
 364 {
 365         register struct dynpcc_info *dpi = &(jme->dpi);
 366
 367         jme_set_rx_pcc(jme, PCC_P1);
 368         dpi->cur                = PCC_P1;
 369         dpi->attempt            = PCC_P1;
 370         dpi->cnt                = 0;
 371
 372         jwrite32(jme, JME_PCCTX,
 373                         ((PCC_TX_TO << PCCTXTO_SHIFT) & PCCTXTO_MASK) |
 374                         ((PCC_TX_CNT << PCCTX_SHIFT) & PCCTX_MASK) |
 375                         PCCTXQ0_EN
 376                 );
 377
 378         /*
 379          * Enable Interrupts
 380          */
 381         jwrite32(jme, JME_IENS, INTR_ENABLE);
 382 }
 383
 384 static inline void
 385 jme_stop_irq(struct jme_adapter *jme)
 386 {
 387         /*
 388          * Disable Interrupts
 389          */
 390         jwrite32f(jme, JME_IENC, INTR_ENABLE);
 391 }
 392
 393 static u32
 394 jme_linkstat_from_phy(struct jme_adapter *jme)
 395 {
 396         u32 phylink, bmsr;
 397
 398         phylink = jme_mdio_read(jme->dev, jme->mii_if.phy_id, 17);
 399         bmsr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMSR);
 400         if (bmsr & BMSR_ANCOMP)
 401                 phylink |= PHY_LINK_AUTONEG_COMPLETE;
 402
 403         return phylink;
 404 }
 405
 406 static inline void
 407 jme_set_phyfifo_5level(struct jme_adapter *jme)
 408 {
 409         jme_mdio_write(jme->dev, jme->mii_if.phy_id, 27, 0x0004);
 410 }
 411
 412 static inline void
 413 jme_set_phyfifo_8level(struct jme_adapter *jme)
 414 {
 415         jme_mdio_write(jme->dev, jme->mii_if.phy_id, 27, 0x0000);
 416 }
 417
 418 static int
 419 jme_check_link(struct net_device *netdev, int testonly)
 420 {
 421         struct jme_adapter *jme = netdev_priv(netdev);
 422         u32 phylink, cnt = JME_SPDRSV_TIMEOUT, bmcr;
 423         char linkmsg[64];
 424         int rc = 0;
 425
 426         linkmsg[0] = '\0';
 427
 428         if (jme->fpgaver)
 429                 phylink = jme_linkstat_from_phy(jme);
 430         else
 431                 phylink = jread32(jme, JME_PHY_LINK);
 432
 433         if (phylink & PHY_LINK_UP) {
 434                 if (!(phylink & PHY_LINK_AUTONEG_COMPLETE)) {
 435                         /*
 436                          * If we did not enable AN
 437                          * Speed/Duplex Info should be obtained from SMI
 438                          */
 439                         phylink = PHY_LINK_UP;
 440
 441                         bmcr = jme_mdio_read(jme->dev,
 442                                                 jme->mii_if.phy_id,
 443                                                 MII_BMCR);
 444
 445                         phylink |= ((bmcr & BMCR_SPEED1000) &&
 446                                         (bmcr & BMCR_SPEED100) == 0) ?
 447                                         PHY_LINK_SPEED_1000M :
 448                                         (bmcr & BMCR_SPEED100) ?
 449                                         PHY_LINK_SPEED_100M :
 450                                         PHY_LINK_SPEED_10M;
 451
 452                         phylink |= (bmcr & BMCR_FULLDPLX) ?
 453                                          PHY_LINK_DUPLEX : 0;
 454
 455                         strcat(linkmsg, "Forced: ");
 456                 } else {
 457                         /*
 458                          * Keep polling for speed/duplex resolve complete
 459                          */
 460                         while (!(phylink & PHY_LINK_SPEEDDPU_RESOLVED) &&
 461                                 --cnt) {
 462
 463                                 udelay(1);
 464
 465                                 if (jme->fpgaver)
 466                                         phylink = jme_linkstat_from_phy(jme);
 467                                 else
 468                                         phylink = jread32(jme, JME_PHY_LINK);
 469                         }
 470                         if (!cnt)
 471                                 pr_err("Waiting speed resolve timeout\n");
 472
 473                         strcat(linkmsg, "ANed: ");
 474                 }
 475
 476                 if (jme->phylink == phylink) {
 477                         rc = 1;
 478                         goto out;
 479                 }
 480                 if (testonly)
 481                         goto out;
 482
 483                 jme->phylink = phylink;
 484
 485                 /*
 486                  * The speed/duplex setting of jme->reg_ghc already cleared
 487                  * by jme_reset_mac_processor()
 488                  */
 489                 switch (phylink & PHY_LINK_SPEED_MASK) {
 490                 case PHY_LINK_SPEED_10M:
 491                         jme->reg_ghc |= GHC_SPEED_10M;
 492                         strcat(linkmsg, "10 Mbps, ");
 493                         break;
 494                 case PHY_LINK_SPEED_100M:
 495                         jme->reg_ghc |= GHC_SPEED_100M;
 496                         strcat(linkmsg, "100 Mbps, ");
 497                         break;
 498                 case PHY_LINK_SPEED_1000M:
 499                         jme->reg_ghc |= GHC_SPEED_1000M;
 500                         strcat(linkmsg, "1000 Mbps, ");
 501                         break;
 502                 default:
 503                         break;
 504                 }
 505
 506                 if (phylink & PHY_LINK_DUPLEX) {
 507                         jwrite32(jme, JME_TXMCS, TXMCS_DEFAULT);
 508                         jwrite32(jme, JME_TXTRHD, TXTRHD_FULLDUPLEX);
 509                         jme->reg_ghc |= GHC_DPX;
 510                 } else {
 511                         jwrite32(jme, JME_TXMCS, TXMCS_DEFAULT |
 512                                                 TXMCS_BACKOFF |
 513                                                 TXMCS_CARRIERSENSE |
 514                                                 TXMCS_COLLISION);
 515                         jwrite32(jme, JME_TXTRHD, TXTRHD_HALFDUPLEX);
 516                 }
 517
 518                 jwrite32(jme, JME_GHC, jme->reg_ghc);
 519
 520                 if (is_buggy250(jme->pdev->device, jme->chiprev)) {
 521                         jme->reg_gpreg1 &= ~(GPREG1_HALFMODEPATCH |
 522                                              GPREG1_RSSPATCH);
 523                         if (!(phylink & PHY_LINK_DUPLEX))
 524                                 jme->reg_gpreg1 |= GPREG1_HALFMODEPATCH;
 525                         switch (phylink & PHY_LINK_SPEED_MASK) {
 526                         case PHY_LINK_SPEED_10M:
 527                                 jme_set_phyfifo_8level(jme);
 528                                 jme->reg_gpreg1 |= GPREG1_RSSPATCH;
 529                                 break;
 530                         case PHY_LINK_SPEED_100M:
 531                                 jme_set_phyfifo_5level(jme);
 532                                 jme->reg_gpreg1 |= GPREG1_RSSPATCH;
 533                                 break;
 534                         case PHY_LINK_SPEED_1000M:
 535                                 jme_set_phyfifo_8level(jme);
 536                                 break;
 537                         default:
 538                                 break;
 539                         }
 540                 }
 541                 jwrite32(jme, JME_GPREG1, jme->reg_gpreg1);
 542
 543                 strcat(linkmsg, (phylink & PHY_LINK_DUPLEX) ?
 544                                         "Full-Duplex, " :
 545                                         "Half-Duplex, ");
 546                 strcat(linkmsg, (phylink & PHY_LINK_MDI_STAT) ?
 547                                         "MDI-X" :
 548                                         "MDI");
 549                 netif_info(jme, link, jme->dev, "Link is up at %s\n", linkmsg);
 550                 netif_carrier_on(netdev);
 551         } else {
 552                 if (testonly)
 553                         goto out;
 554
 555                 netif_info(jme, link, jme->dev, "Link is down\n");
 556                 jme->phylink = 0;
 557                 netif_carrier_off(netdev);
 558         }
 559
 560 out:
 561         return rc;
 562 }
 563
 564 static int
 565 jme_setup_tx_resources(struct jme_adapter *jme)
 566 {
 567         struct jme_ring *txring = &(jme->txring[0]);
 568
 569         txring->alloc = dma_alloc_coherent(&(jme->pdev->dev),
 570                                    TX_RING_ALLOC_SIZE(jme->tx_ring_size),
 571                                    &(txring->dmaalloc),
 572                                    GFP_ATOMIC);
 573
 574         if (!txring->alloc)
 575                 goto err_set_null;
 576
 577         /*
 578          * 16 Bytes align
 579          */
 580         txring->desc            = (void *)ALIGN((unsigned long)(txring->alloc),
 581                                                 RING_DESC_ALIGN);
 582         txring->dma             = ALIGN(txring->dmaalloc, RING_DESC_ALIGN);
 583         txring->next_to_use     = 0;
 584         atomic_set(&txring->next_to_clean, 0);
 585         atomic_set(&txring->nr_free, jme->tx_ring_size);
 586
 587         txring->bufinf          = kmalloc(sizeof(struct jme_buffer_info) *
 588                                         jme->tx_ring_size, GFP_ATOMIC);
 589         if (unlikely(!(txring->bufinf)))
 590                 goto err_free_txring;
 591
 592         /*
 593          * Initialize Transmit Descriptors
 594          */
 595         memset(txring->alloc, 0, TX_RING_ALLOC_SIZE(jme->tx_ring_size));
 596         memset(txring->bufinf, 0,
 597                 sizeof(struct jme_buffer_info) * jme->tx_ring_size);
 598
 599         return 0;
 600
 601 err_free_txring:
 602         dma_free_coherent(&(jme->pdev->dev),
 603                           TX_RING_ALLOC_SIZE(jme->tx_ring_size),
 604                           txring->alloc,
 605                           txring->dmaalloc);
 606
 607 err_set_null:
 608         txring->desc = NULL;
 609         txring->dmaalloc = 0;
 610         txring->dma = 0;
 611         txring->bufinf = NULL;
 612
 613         return -ENOMEM;
 614 }
 615
 616 static void
 617 jme_free_tx_resources(struct jme_adapter *jme)
 618 {
 619         int i;
 620         struct jme_ring *txring = &(jme->txring[0]);
 621         struct jme_buffer_info *txbi;
 622
 623         if (txring->alloc) {
 624                 if (txring->bufinf) {
 625                         for (i = 0 ; i < jme->tx_ring_size ; ++i) {
 626                                 txbi = txring->bufinf + i;
 627                                 if (txbi->skb) {
 628                                         dev_kfree_skb(txbi->skb);
 629                                         txbi->skb = NULL;
 630                                 }
 631                                 txbi->mapping           = 0;
 632                                 txbi->len               = 0;
 633                                 txbi->nr_desc           = 0;
 634                                 txbi->start_xmit        = 0;
 635                         }
 636                         kfree(txring->bufinf);
 637                 }
 638
 639                 dma_free_coherent(&(jme->pdev->dev),
 640                                   TX_RING_ALLOC_SIZE(jme->tx_ring_size),
 641                                   txring->alloc,
 642                                   txring->dmaalloc);
 643
 644                 txring->alloc           = NULL;
 645                 txring->desc            = NULL;
 646                 txring->dmaalloc        = 0;
 647                 txring->dma             = 0;
 648                 txring->bufinf          = NULL;
 649         }
 650         txring->next_to_use     = 0;
 651         atomic_set(&txring->next_to_clean, 0);
 652         atomic_set(&txring->nr_free, 0);
 653 }
 654
 655 static inline void
 656 jme_enable_tx_engine(struct jme_adapter *jme)
 657 {
 658         /*
 659          * Select Queue 0
 660          */
 661         jwrite32(jme, JME_TXCS, TXCS_DEFAULT | TXCS_SELECT_QUEUE0);
 662         wmb();
 663
 664         /*
 665          * Setup TX Queue 0 DMA Bass Address
 666          */
 667         jwrite32(jme, JME_TXDBA_LO, (__u64)jme->txring[0].dma & 0xFFFFFFFFUL);
 668         jwrite32(jme, JME_TXDBA_HI, (__u64)(jme->txring[0].dma) >> 32);
 669         jwrite32(jme, JME_TXNDA, (__u64)jme->txring[0].dma & 0xFFFFFFFFUL);
 670
 671         /*
 672          * Setup TX Descptor Count
 673          */
 674         jwrite32(jme, JME_TXQDC, jme->tx_ring_size);
 675
 676         /*
 677          * Enable TX Engine
 678          */
 679         wmb();
 680         jwrite32f(jme, JME_TXCS, jme->reg_txcs |
 681                                 TXCS_SELECT_QUEUE0 |
 682                                 TXCS_ENABLE);
 683
 684         /*
 685          * Start clock for TX MAC Processor
 686          */
 687         jme_mac_txclk_on(jme);
 688 }
 689
 690 static inline void
 691 jme_restart_tx_engine(struct jme_adapter *jme)
 692 {
 693         /*
 694          * Restart TX Engine
 695          */
 696         jwrite32(jme, JME_TXCS, jme->reg_txcs |
 697                                 TXCS_SELECT_QUEUE0 |
 698                                 TXCS_ENABLE);
 699 }
 700
 701 static inline void
 702 jme_disable_tx_engine(struct jme_adapter *jme)
 703 {
 704         int i;
 705         u32 val;
 706
 707         /*
 708          * Disable TX Engine
 709          */
 710         jwrite32(jme, JME_TXCS, jme->reg_txcs | TXCS_SELECT_QUEUE0);
 711         wmb();
 712
 713         val = jread32(jme, JME_TXCS);
 714         for (i = JME_TX_DISABLE_TIMEOUT ; (val & TXCS_ENABLE) && i > 0 ; --i) {
 715                 mdelay(1);
 716                 val = jread32(jme, JME_TXCS);
 717                 rmb();
 718         }
 719
 720         if (!i)
 721                 pr_err("Disable TX engine timeout\n");
 722
 723         /*
 724          * Stop clock for TX MAC Processor
 725          */
 726         jme_mac_txclk_off(jme);
 727 }
 728
 729 static void
 730 jme_set_clean_rxdesc(struct jme_adapter *jme, int i)
 731 {
 732         struct jme_ring *rxring = &(jme->rxring[0]);
 733         register struct rxdesc *rxdesc = rxring->desc;
 734         struct jme_buffer_info *rxbi = rxring->bufinf;
 735         rxdesc += i;
 736         rxbi += i;
 737
 738         rxdesc->dw[0] = 0;
 739         rxdesc->dw[1] = 0;
 740         rxdesc->desc1.bufaddrh  = cpu_to_le32((__u64)rxbi->mapping >> 32);
 741         rxdesc->desc1.bufaddrl  = cpu_to_le32(
 742                                         (__u64)rxbi->mapping & 0xFFFFFFFFUL);
 743         rxdesc->desc1.datalen   = cpu_to_le16(rxbi->len);
 744         if (jme->dev->features & NETIF_F_HIGHDMA)
 745                 rxdesc->desc1.flags = RXFLAG_64BIT;
 746         wmb();
 747         rxdesc->desc1.flags     |= RXFLAG_OWN | RXFLAG_INT;
 748 }
 749
 750 static int
 751 jme_make_new_rx_buf(struct jme_adapter *jme, int i)
 752 {
 753         struct jme_ring *rxring = &(jme->rxring[0]);
 754         struct jme_buffer_info *rxbi = rxring->bufinf + i;
 755         struct sk_buff *skb;
 756
 757         skb = netdev_alloc_skb(jme->dev,
 758                 jme->dev->mtu + RX_EXTRA_LEN);
 759         if (unlikely(!skb))
 760                 return -ENOMEM;
 761
 762         rxbi->skb = skb;
 763         rxbi->len = skb_tailroom(skb);
 764         rxbi->mapping = pci_map_page(jme->pdev,
 765                                         virt_to_page(skb->data),
 766                                         offset_in_page(skb->data),
 767                                         rxbi->len,
 768                                         PCI_DMA_FROMDEVICE);
 769
 770         return 0;
 771 }
 772
 773 static void
 774 jme_free_rx_buf(struct jme_adapter *jme, int i)
 775 {
 776         struct jme_ring *rxring = &(jme->rxring[0]);
 777         struct jme_buffer_info *rxbi = rxring->bufinf;
 778         rxbi += i;
 779
 780         if (rxbi->skb) {
 781                 pci_unmap_page(jme->pdev,
 782                                  rxbi->mapping,
 783                                  rxbi->len,
 784                                  PCI_DMA_FROMDEVICE);
 785                 dev_kfree_skb(rxbi->skb);
 786                 rxbi->skb = NULL;
 787                 rxbi->mapping = 0;
 788                 rxbi->len = 0;
 789         }
 790 }
 791
 792 static void
 793 jme_free_rx_resources(struct jme_adapter *jme)
 794 {
 795         int i;
 796         struct jme_ring *rxring = &(jme->rxring[0]);
 797
 798         if (rxring->alloc) {
 799                 if (rxring->bufinf) {
 800                         for (i = 0 ; i < jme->rx_ring_size ; ++i)
 801                                 jme_free_rx_buf(jme, i);
 802                         kfree(rxring->bufinf);
 803                 }
 804
 805                 dma_free_coherent(&(jme->pdev->dev),
 806                                   RX_RING_ALLOC_SIZE(jme->rx_ring_size),
 807                                   rxring->alloc,
 808                                   rxring->dmaalloc);
 809                 rxring->alloc    = NULL;
 810                 rxring->desc     = NULL;
 811                 rxring->dmaalloc = 0;
 812                 rxring->dma      = 0;
 813                 rxring->bufinf   = NULL;
 814         }
 815         rxring->next_to_use   = 0;
 816         atomic_set(&rxring->next_to_clean, 0);
 817 }
 818
 819 static int
 820 jme_setup_rx_resources(struct jme_adapter *jme)
 821 {
 822         int i;
 823         struct jme_ring *rxring = &(jme->rxring[0]);
 824
 825         rxring->alloc = dma_alloc_coherent(&(jme->pdev->dev),
 826                                    RX_RING_ALLOC_SIZE(jme->rx_ring_size),
 827                                    &(rxring->dmaalloc),
 828                                    GFP_ATOMIC);
 829         if (!rxring->alloc)
 830                 goto err_set_null;
 831
 832         /*
 833          * 16 Bytes align
 834          */
 835         rxring->desc            = (void *)ALIGN((unsigned long)(rxring->alloc),
 836                                                 RING_DESC_ALIGN);
 837         rxring->dma             = ALIGN(rxring->dmaalloc, RING_DESC_ALIGN);
 838         rxring->next_to_use     = 0;
 839         atomic_set(&rxring->next_to_clean, 0);
 840
 841         rxring->bufinf          = kmalloc(sizeof(struct jme_buffer_info) *
 842                                         jme->rx_ring_size, GFP_ATOMIC);
 843         if (unlikely(!(rxring->bufinf)))
 844                 goto err_free_rxring;
 845
 846         /*
 847          * Initiallize Receive Descriptors
 848          */
 849         memset(rxring->bufinf, 0,
 850                 sizeof(struct jme_buffer_info) * jme->rx_ring_size);
 851         for (i = 0 ; i < jme->rx_ring_size ; ++i) {
 852                 if (unlikely(jme_make_new_rx_buf(jme, i))) {
 853                         jme_free_rx_resources(jme);
 854                         return -ENOMEM;
 855                 }
 856
 857                 jme_set_clean_rxdesc(jme, i);
 858         }
 859
 860         return 0;
 861
 862 err_free_rxring:
 863         dma_free_coherent(&(jme->pdev->dev),
 864                           RX_RING_ALLOC_SIZE(jme->rx_ring_size),
 865                           rxring->alloc,
 866                           rxring->dmaalloc);
 867 err_set_null:
 868         rxring->desc = NULL;
 869         rxring->dmaalloc = 0;
 870         rxring->dma = 0;
 871         rxring->bufinf = NULL;
 872
 873         return -ENOMEM;
 874 }
 875
 876 static inline void
 877 jme_enable_rx_engine(struct jme_adapter *jme)
 878 {
 879         /*
 880          * Select Queue 0
 881          */
 882         jwrite32(jme, JME_RXCS, jme->reg_rxcs |
 883                                 RXCS_QUEUESEL_Q0);
 884         wmb();
 885
 886         /*
 887          * Setup RX DMA Bass Address
 888          */
 889         jwrite32(jme, JME_RXDBA_LO, (__u64)(jme->rxring[0].dma) & 0xFFFFFFFFUL);
 890         jwrite32(jme, JME_RXDBA_HI, (__u64)(jme->rxring[0].dma) >> 32);
 891         jwrite32(jme, JME_RXNDA, (__u64)(jme->rxring[0].dma) & 0xFFFFFFFFUL);
 892
 893         /*
 894          * Setup RX Descriptor Count
 895          */
 896         jwrite32(jme, JME_RXQDC, jme->rx_ring_size);
 897
 898         /*
 899          * Setup Unicast Filter
 900          */
 901         jme_set_unicastaddr(jme->dev);
 902         jme_set_multi(jme->dev);
 903
 904         /*
 905          * Enable RX Engine
 906          */
 907         wmb();
 908         jwrite32f(jme, JME_RXCS, jme->reg_rxcs |
 909                                 RXCS_QUEUESEL_Q0 |
 910                                 RXCS_ENABLE |
 911                                 RXCS_QST);
 912
 913         /*
 914          * Start clock for RX MAC Processor
 915          */
 916         jme_mac_rxclk_on(jme);
 917 }
 918
 919 static inline void
 920 jme_restart_rx_engine(struct jme_adapter *jme)
 921 {
 922         /*
 923          * Start RX Engine
 924          */
 925         jwrite32(jme, JME_RXCS, jme->reg_rxcs |
 926                                 RXCS_QUEUESEL_Q0 |
 927                                 RXCS_ENABLE |
 928                                 RXCS_QST);
 929 }
 930
 931 static inline void
 932 jme_disable_rx_engine(struct jme_adapter *jme)
 933 {
 934         int i;
 935         u32 val;
 936
 937         /*
 938          * Disable RX Engine
 939          */
 940         jwrite32(jme, JME_RXCS, jme->reg_rxcs);
 941         wmb();
 942
 943         val = jread32(jme, JME_RXCS);
 944         for (i = JME_RX_DISABLE_TIMEOUT ; (val & RXCS_ENABLE) && i > 0 ; --i) {
 945                 mdelay(1);
 946                 val = jread32(jme, JME_RXCS);
 947                 rmb();
 948         }
 949
 950         if (!i)
 951                 pr_err("Disable RX engine timeout\n");
 952
 953         /*
 954          * Stop clock for RX MAC Processor
 955          */
 956         jme_mac_rxclk_off(jme);
 957 }
 958
 959 static int
 960 jme_rxsum_ok(struct jme_adapter *jme, u16 flags)
 961 {
 962         if (!(flags & (RXWBFLAG_TCPON | RXWBFLAG_UDPON | RXWBFLAG_IPV4)))
 963                 return false;
 964
 965         if (unlikely((flags & (RXWBFLAG_MF | RXWBFLAG_TCPON | RXWBFLAG_TCPCS))
 966                         == RXWBFLAG_TCPON)) {
 967                 if (flags & RXWBFLAG_IPV4)
 968                         netif_err(jme, rx_err, jme->dev, "TCP Checksum error\n");
 969                 return false;
 970         }
 971
 972         if (unlikely((flags & (RXWBFLAG_MF | RXWBFLAG_UDPON | RXWBFLAG_UDPCS))
 973                         == RXWBFLAG_UDPON)) {
 974                 if (flags & RXWBFLAG_IPV4)
 975                         netif_err(jme, rx_err, jme->dev, "UDP Checksum error\n");
 976                 return false;
 977         }
 978
 979         if (unlikely((flags & (RXWBFLAG_IPV4 | RXWBFLAG_IPCS))
 980                         == RXWBFLAG_IPV4)) {
 981                 netif_err(jme, rx_err, jme->dev, "IPv4 Checksum error\n");
 982                 return false;
 983         }
 984
 985         return true;
 986 }
 987
 988 static void
 989 jme_alloc_and_feed_skb(struct jme_adapter *jme, int idx)
 990 {
 991         struct jme_ring *rxring = &(jme->rxring[0]);
 992         struct rxdesc *rxdesc = rxring->desc;
 993         struct jme_buffer_info *rxbi = rxring->bufinf;
 994         struct sk_buff *skb;
 995         int framesize;
 996
 997         rxdesc += idx;
 998         rxbi += idx;
 999
1000         skb = rxbi->skb;
1001         pci_dma_sync_single_for_cpu(jme->pdev,
1002                                         rxbi->mapping,
1003                                         rxbi->len,
1004                                         PCI_DMA_FROMDEVICE);
1005
1006         if (unlikely(jme_make_new_rx_buf(jme, idx))) {
1007                 pci_dma_sync_single_for_device(jme->pdev,
1008                                                 rxbi->mapping,
1009                                                 rxbi->len,
1010                                                 PCI_DMA_FROMDEVICE);
1011
1012                 ++(NET_STAT(jme).rx_dropped);
1013         } else {
1014                 framesize = le16_to_cpu(rxdesc->descwb.framesize)
1015                                 - RX_PREPAD_SIZE;
1016
1017                 skb_reserve(skb, RX_PREPAD_SIZE);
1018                 skb_put(skb, framesize);
1019                 skb->protocol = eth_type_trans(skb, jme->dev);
1020
1021                 if (jme_rxsum_ok(jme, le16_to_cpu(rxdesc->descwb.flags)))
1022                         skb->ip_summed = CHECKSUM_UNNECESSARY;
1023                 else
1024                         skb_checksum_none_assert(skb);
1025
1026                 if (rxdesc->descwb.flags & cpu_to_le16(RXWBFLAG_TAGON)) {
1027                         if (jme->vlgrp) {
1028                                 jme->jme_vlan_rx(skb, jme->vlgrp,
1029                                         le16_to_cpu(rxdesc->descwb.vlan));
1030                                 NET_STAT(jme).rx_bytes += 4;
1031                         } else {
1032                                 dev_kfree_skb(skb);
1033                         }
1034                 } else {
1035                         jme->jme_rx(skb);
1036                 }
1037
1038                 if ((rxdesc->descwb.flags & cpu_to_le16(RXWBFLAG_DEST)) ==
1039                     cpu_to_le16(RXWBFLAG_DEST_MUL))
1040                         ++(NET_STAT(jme).multicast);
1041
1042                 NET_STAT(jme).rx_bytes += framesize;
1043                 ++(NET_STAT(jme).rx_packets);
1044         }
1045
1046         jme_set_clean_rxdesc(jme, idx);
1047
1048 }
1049
1050 static int
1051 jme_process_receive(struct jme_adapter *jme, int limit)
1052 {
1053         struct jme_ring *rxring = &(jme->rxring[0]);
1054         struct rxdesc *rxdesc = rxring->desc;
1055         int i, j, ccnt, desccnt, mask = jme->rx_ring_mask;
1056
1057         if (unlikely(!atomic_dec_and_test(&jme->rx_cleaning)))
1058                 goto out_inc;
1059
1060         if (unlikely(atomic_read(&jme->link_changing) != 1))
1061                 goto out_inc;
1062
1063         if (unlikely(!netif_carrier_ok(jme->dev)))
1064                 goto out_inc;
1065
1066         i = atomic_read(&rxring->next_to_clean);
1067         while (limit > 0) {
1068                 rxdesc = rxring->desc;
1069                 rxdesc += i;
1070
1071                 if ((rxdesc->descwb.flags & cpu_to_le16(RXWBFLAG_OWN)) ||
1072                 !(rxdesc->descwb.desccnt & RXWBDCNT_WBCPL))
1073                         goto out;
1074                 --limit;
1075
1076                 rmb();
1077                 desccnt = rxdesc->descwb.desccnt & RXWBDCNT_DCNT;
1078
1079                 if (unlikely(desccnt > 1 ||
1080                 rxdesc->descwb.errstat & RXWBERR_ALLERR)) {
1081
1082                         if (rxdesc->descwb.errstat & RXWBERR_CRCERR)
1083                                 ++(NET_STAT(jme).rx_crc_errors);
1084                         else if (rxdesc->descwb.errstat & RXWBERR_OVERUN)
1085                                 ++(NET_STAT(jme).rx_fifo_errors);
1086                         else
1087                                 ++(NET_STAT(jme).rx_errors);
1088
1089                         if (desccnt > 1)
1090                                 limit -= desccnt - 1;
1091
1092                         for (j = i, ccnt = desccnt ; ccnt-- ; ) {
1093                                 jme_set_clean_rxdesc(jme, j);
1094                                 j = (j + 1) & (mask);
1095                         }
1096
1097                 } else {
1098                         jme_alloc_and_feed_skb(jme, i);
1099                 }
1100
1101                 i = (i + desccnt) & (mask);
1102         }
1103
1104 out:
1105         atomic_set(&rxring->next_to_clean, i);
1106
1107 out_inc:
1108         atomic_inc(&jme->rx_cleaning);
1109
1110         return limit > 0 ? limit : 0;
1111
1112 }
1113
1114 static void
1115 jme_attempt_pcc(struct dynpcc_info *dpi, int atmp)
1116 {
1117         if (likely(atmp == dpi->cur)) {
1118                 dpi->cnt = 0;
1119                 return;
1120         }
1121
1122         if (dpi->attempt == atmp) {
1123                 ++(dpi->cnt);
1124         } else {
1125                 dpi->attempt = atmp;
1126                 dpi->cnt = 0;
1127         }
1128
1129 }
1130
1131 static void
1132 jme_dynamic_pcc(struct jme_adapter *jme)
1133 {
1134         register struct dynpcc_info *dpi = &(jme->dpi);
1135
1136         if ((NET_STAT(jme).rx_bytes - dpi->last_bytes) > PCC_P3_THRESHOLD)
1137                 jme_attempt_pcc(dpi, PCC_P3);
1138         else if ((NET_STAT(jme).rx_packets - dpi->last_pkts) > PCC_P2_THRESHOLD ||
1139                  dpi->intr_cnt > PCC_INTR_THRESHOLD)
1140                 jme_attempt_pcc(dpi, PCC_P2);
1141         else
1142                 jme_attempt_pcc(dpi, PCC_P1);
1143
1144         if (unlikely(dpi->attempt != dpi->cur && dpi->cnt > 5)) {
1145                 if (dpi->attempt < dpi->cur)
1146                         tasklet_schedule(&jme->rxclean_task);
1147                 jme_set_rx_pcc(jme, dpi->attempt);
1148                 dpi->cur = dpi->attempt;
1149                 dpi->cnt = 0;
1150         }
1151 }
1152
1153 static void
1154 jme_start_pcc_timer(struct jme_adapter *jme)
1155 {
1156         struct dynpcc_info *dpi = &(jme->dpi);
1157         dpi->last_bytes         = NET_STAT(jme).rx_bytes;
1158         dpi->last_pkts          = NET_STAT(jme).rx_packets;
1159         dpi->intr_cnt           = 0;
1160         jwrite32(jme, JME_TMCSR,
1161                 TMCSR_EN | ((0xFFFFFF - PCC_INTERVAL_US) & TMCSR_CNT));
1162 }
1163
1164 static inline void
1165 jme_stop_pcc_timer(struct jme_adapter *jme)
1166 {
1167         jwrite32(jme, JME_TMCSR, 0);
1168 }
1169
1170 static void
1171 jme_shutdown_nic(struct jme_adapter *jme)
1172 {
1173         u32 phylink;
1174
1175         phylink = jme_linkstat_from_phy(jme);
1176
1177         if (!(phylink & PHY_LINK_UP)) {
1178                 /*
1179                  * Disable all interrupt before issue timer
1180                  */
1181                 jme_stop_irq(jme);
1182                 jwrite32(jme, JME_TIMER2, TMCSR_EN | 0xFFFFFE);
1183         }
1184 }
1185
1186 static void
1187 jme_pcc_tasklet(unsigned long arg)
1188 {
1189         struct jme_adapter *jme = (struct jme_adapter *)arg;
1190         struct net_device *netdev = jme->dev;
1191
1192         if (unlikely(test_bit(JME_FLAG_SHUTDOWN, &jme->flags))) {
1193                 jme_shutdown_nic(jme);
1194                 return;
1195         }
1196
1197         if (unlikely(!netif_carrier_ok(netdev) ||
1198                 (atomic_read(&jme->link_changing) != 1)
1199         )) {
1200                 jme_stop_pcc_timer(jme);
1201                 return;
1202         }
1203
1204         if (!(test_bit(JME_FLAG_POLL, &jme->flags)))
1205                 jme_dynamic_pcc(jme);
1206
1207         jme_start_pcc_timer(jme);
1208 }
1209
1210 static inline void
1211 jme_polling_mode(struct jme_adapter *jme)
1212 {
1213         jme_set_rx_pcc(jme, PCC_OFF);
1214 }
1215
1216 static inline void
1217 jme_interrupt_mode(struct jme_adapter *jme)
1218 {
1219         jme_set_rx_pcc(jme, PCC_P1);
1220 }
1221
1222 static inline int
1223 jme_pseudo_hotplug_enabled(struct jme_adapter *jme)
1224 {
1225         u32 apmc;
1226         apmc = jread32(jme, JME_APMC);
1227         return apmc & JME_APMC_PSEUDO_HP_EN;
1228 }
1229
1230 static void
1231 jme_start_shutdown_timer(struct jme_adapter *jme)
1232 {
1233         u32 apmc;
1234
1235         apmc = jread32(jme, JME_APMC) | JME_APMC_PCIE_SD_EN;
1236         apmc &= ~JME_APMC_EPIEN_CTRL;
1237         if (!no_extplug) {
1238                 jwrite32f(jme, JME_APMC, apmc | JME_APMC_EPIEN_CTRL_EN);
1239                 wmb();
1240         }
1241         jwrite32f(jme, JME_APMC, apmc);
1242
1243         jwrite32f(jme, JME_TIMER2, 0);
1244         set_bit(JME_FLAG_SHUTDOWN, &jme->flags);
1245         jwrite32(jme, JME_TMCSR,
1246                 TMCSR_EN | ((0xFFFFFF - APMC_PHP_SHUTDOWN_DELAY) & TMCSR_CNT));
1247 }
1248
1249 static void
1250 jme_stop_shutdown_timer(struct jme_adapter *jme)
1251 {
1252         u32 apmc;
1253
1254         jwrite32f(jme, JME_TMCSR, 0);
1255         jwrite32f(jme, JME_TIMER2, 0);
1256         clear_bit(JME_FLAG_SHUTDOWN, &jme->flags);
1257
1258         apmc = jread32(jme, JME_APMC);
1259         apmc &= ~(JME_APMC_PCIE_SD_EN | JME_APMC_EPIEN_CTRL);
1260         jwrite32f(jme, JME_APMC, apmc | JME_APMC_EPIEN_CTRL_DIS);
1261         wmb();
1262         jwrite32f(jme, JME_APMC, apmc);
1263 }
1264
1265 static void
1266 jme_link_change_tasklet(unsigned long arg)
1267 {
1268         struct jme_adapter *jme = (struct jme_adapter *)arg;
1269         struct net_device *netdev = jme->dev;
1270         int rc;
1271
1272         while (!atomic_dec_and_test(&jme->link_changing)) {
1273                 atomic_inc(&jme->link_changing);
1274                 netif_info(jme, intr, jme->dev, "Get link change lock failed\n");
1275                 while (atomic_read(&jme->link_changing) != 1)
1276                         netif_info(jme, intr, jme->dev, "Waiting link change lock\n");
1277         }
1278
1279         if (jme_check_link(netdev, 1) && jme->old_mtu == netdev->mtu)
1280                 goto out;
1281
1282         jme->old_mtu = netdev->mtu;
1283         netif_stop_queue(netdev);
1284         if (jme_pseudo_hotplug_enabled(jme))
1285                 jme_stop_shutdown_timer(jme);
1286
1287         jme_stop_pcc_timer(jme);
1288         tasklet_disable(&jme->txclean_task);
1289         tasklet_disable(&jme->rxclean_task);
1290         tasklet_disable(&jme->rxempty_task);
1291
1292         if (netif_carrier_ok(netdev)) {
1293                 jme_disable_rx_engine(jme);
1294                 jme_disable_tx_engine(jme);
1295                 jme_reset_mac_processor(jme);
1296                 jme_free_rx_resources(jme);
1297                 jme_free_tx_resources(jme);
1298
1299                 if (test_bit(JME_FLAG_POLL, &jme->flags))
1300                         jme_polling_mode(jme);
1301
1302                 netif_carrier_off(netdev);
1303         }
1304
1305         jme_check_link(netdev, 0);
1306         if (netif_carrier_ok(netdev)) {
1307                 rc = jme_setup_rx_resources(jme);
1308                 if (rc) {
1309                         pr_err("Allocating resources for RX error, Device STOPPED!\n");
1310                         goto out_enable_tasklet;
1311                 }
1312
1313                 rc = jme_setup_tx_resources(jme);
1314                 if (rc) {
1315                         pr_err("Allocating resources for TX error, Device STOPPED!\n");
1316                         goto err_out_free_rx_resources;
1317                 }
1318
1319                 jme_enable_rx_engine(jme);
1320                 jme_enable_tx_engine(jme);
1321
1322                 netif_start_queue(netdev);
1323
1324                 if (test_bit(JME_FLAG_POLL, &jme->flags))
1325                         jme_interrupt_mode(jme);
1326
1327                 jme_start_pcc_timer(jme);
1328         } else if (jme_pseudo_hotplug_enabled(jme)) {
1329                 jme_start_shutdown_timer(jme);
1330         }
1331
1332         goto out_enable_tasklet;
1333
1334 err_out_free_rx_resources:
1335         jme_free_rx_resources(jme);
1336 out_enable_tasklet:
1337         tasklet_enable(&jme->txclean_task);
1338         tasklet_hi_enable(&jme->rxclean_task);
1339         tasklet_hi_enable(&jme->rxempty_task);
1340 out:
1341         atomic_inc(&jme->link_changing);
1342 }
1343
1344 static void
1345 jme_rx_clean_tasklet(unsigned long arg)
1346 {
1347         struct jme_adapter *jme = (struct jme_adapter *)arg;
1348         struct dynpcc_info *dpi = &(jme->dpi);
1349
1350         jme_process_receive(jme, jme->rx_ring_size);
1351         ++(dpi->intr_cnt);
1352
1353 }
1354
1355 static int
1356 jme_poll(JME_NAPI_HOLDER(holder), JME_NAPI_WEIGHT(budget))
1357 {
1358         struct jme_adapter *jme = jme_napi_priv(holder);
1359         int rest;
1360
1361         rest = jme_process_receive(jme, JME_NAPI_WEIGHT_VAL(budget));
1362
1363         while (atomic_read(&jme->rx_empty) > 0) {
1364                 atomic_dec(&jme->rx_empty);
1365                 ++(NET_STAT(jme).rx_dropped);
1366                 jme_restart_rx_engine(jme);
1367         }
1368         atomic_inc(&jme->rx_empty);
1369
1370         if (rest) {
1371                 JME_RX_COMPLETE(netdev, holder);
1372                 jme_interrupt_mode(jme);
1373         }
1374
1375         JME_NAPI_WEIGHT_SET(budget, rest);
1376         return JME_NAPI_WEIGHT_VAL(budget) - rest;
1377 }
1378
1379 static void
1380 jme_rx_empty_tasklet(unsigned long arg)
1381 {
1382         struct jme_adapter *jme = (struct jme_adapter *)arg;
1383
1384         if (unlikely(atomic_read(&jme->link_changing) != 1))
1385                 return;
1386
1387         if (unlikely(!netif_carrier_ok(jme->dev)))
1388                 return;
1389
1390         netif_info(jme, rx_status, jme->dev, "RX Queue Full!\n");
1391
1392         jme_rx_clean_tasklet(arg);
1393
1394         while (atomic_read(&jme->rx_empty) > 0) {
1395                 atomic_dec(&jme->rx_empty);
1396                 ++(NET_STAT(jme).rx_dropped);
1397                 jme_restart_rx_engine(jme);
1398         }
1399         atomic_inc(&jme->rx_empty);
1400 }
1401
1402 static void
1403 jme_wake_queue_if_stopped(struct jme_adapter *jme)
1404 {
1405         struct jme_ring *txring = &(jme->txring[0]);
1406
1407         smp_wmb();
1408         if (unlikely(netif_queue_stopped(jme->dev) &&
1409         atomic_read(&txring->nr_free) >= (jme->tx_wake_threshold))) {
1410                 netif_info(jme, tx_done, jme->dev, "TX Queue Waked\n");
1411                 netif_wake_queue(jme->dev);
1412         }
1413
1414 }
1415
1416 static void
1417 jme_tx_clean_tasklet(unsigned long arg)
1418 {
1419         struct jme_adapter *jme = (struct jme_adapter *)arg;
1420         struct jme_ring *txring = &(jme->txring[0]);
1421         struct txdesc *txdesc = txring->desc;
1422         struct jme_buffer_info *txbi = txring->bufinf, *ctxbi, *ttxbi;
1423         int i, j, cnt = 0, max, err, mask;
1424
1425         tx_dbg(jme, "Into txclean\n");
1426
1427         if (unlikely(!atomic_dec_and_test(&jme->tx_cleaning)))
1428                 goto out;
1429
1430         if (unlikely(atomic_read(&jme->link_changing) != 1))
1431                 goto out;
1432
1433         if (unlikely(!netif_carrier_ok(jme->dev)))
1434                 goto out;
1435
1436         max = jme->tx_ring_size - atomic_read(&txring->nr_free);
1437         mask = jme->tx_ring_mask;
1438
1439         for (i = atomic_read(&txring->next_to_clean) ; cnt < max ; ) {
1440
1441                 ctxbi = txbi + i;
1442
1443                 if (likely(ctxbi->skb &&
1444                 !(txdesc[i].descwb.flags & TXWBFLAG_OWN))) {
1445
1446                         tx_dbg(jme, "txclean: %d+%d@%lu\n",
1447                                i, ctxbi->nr_desc, jiffies);
1448
1449                         err = txdesc[i].descwb.flags & TXWBFLAG_ALLERR;
1450
1451                         for (j = 1 ; j < ctxbi->nr_desc ; ++j) {
1452                                 ttxbi = txbi + ((i + j) & (mask));
1453                                 txdesc[(i + j) & (mask)].dw[0] = 0;
1454
1455                                 pci_unmap_page(jme->pdev,
1456                                                  ttxbi->mapping,
1457                                                  ttxbi->len,
1458                                                  PCI_DMA_TODEVICE);
1459
1460                                 ttxbi->mapping = 0;
1461                                 ttxbi->len = 0;
1462                         }
1463
1464                         dev_kfree_skb(ctxbi->skb);
1465
1466                         cnt += ctxbi->nr_desc;
1467
1468                         if (unlikely(err)) {
1469                                 ++(NET_STAT(jme).tx_carrier_errors);
1470                         } else {
1471                                 ++(NET_STAT(jme).tx_packets);
1472                                 NET_STAT(jme).tx_bytes += ctxbi->len;
1473                         }
1474
1475                         ctxbi->skb = NULL;
1476                         ctxbi->len = 0;
1477                         ctxbi->start_xmit = 0;
1478
1479                 } else {
1480                         break;
1481                 }
1482
1483                 i = (i + ctxbi->nr_desc) & mask;
1484
1485                 ctxbi->nr_desc = 0;
1486         }
1487
1488         tx_dbg(jme, "txclean: done %d@%lu\n", i, jiffies);
1489         atomic_set(&txring->next_to_clean, i);
1490         atomic_add(cnt, &txring->nr_free);
1491
1492         jme_wake_queue_if_stopped(jme);
1493
1494 out:
1495         atomic_inc(&jme->tx_cleaning);
1496 }
1497
1498 static void
1499 jme_intr_msi(struct jme_adapter *jme, u32 intrstat)
1500 {
1501         /*
1502          * Disable interrupt
1503          */
1504         jwrite32f(jme, JME_IENC, INTR_ENABLE);
1505
1506         if (intrstat & (INTR_LINKCH | INTR_SWINTR)) {
1507                 /*
1508                  * Link change event is critical
1509                  * all other events are ignored
1510                  */
1511                 jwrite32(jme, JME_IEVE, intrstat);
1512                 tasklet_schedule(&jme->linkch_task);
1513                 goto out_reenable;
1514         }
1515
1516         if (intrstat & INTR_TMINTR) {
1517                 jwrite32(jme, JME_IEVE, INTR_TMINTR);
1518                 tasklet_schedule(&jme->pcc_task);
1519         }
1520
1521         if (intrstat & (INTR_PCCTXTO | INTR_PCCTX)) {
1522                 jwrite32(jme, JME_IEVE, INTR_PCCTXTO | INTR_PCCTX | INTR_TX0);
1523                 tasklet_schedule(&jme->txclean_task);
1524         }
1525
1526         if ((intrstat & (INTR_PCCRX0TO | INTR_PCCRX0 | INTR_RX0EMP))) {
1527                 jwrite32(jme, JME_IEVE, (intrstat & (INTR_PCCRX0TO |
1528                                                      INTR_PCCRX0 |
1529                                                      INTR_RX0EMP)) |
1530                                         INTR_RX0);
1531         }
1532
1533         if (test_bit(JME_FLAG_POLL, &jme->flags)) {
1534                 if (intrstat & INTR_RX0EMP)
1535                         atomic_inc(&jme->rx_empty);
1536
1537                 if ((intrstat & (INTR_PCCRX0TO | INTR_PCCRX0 | INTR_RX0EMP))) {
1538                         if (likely(JME_RX_SCHEDULE_PREP(jme))) {
1539                                 jme_polling_mode(jme);
1540                                 JME_RX_SCHEDULE(jme);
1541                         }
1542                 }
1543         } else {
1544                 if (intrstat & INTR_RX0EMP) {
1545                         atomic_inc(&jme->rx_empty);
1546                         tasklet_hi_schedule(&jme->rxempty_task);
1547                 } else if (intrstat & (INTR_PCCRX0TO | INTR_PCCRX0)) {
1548                         tasklet_hi_schedule(&jme->rxclean_task);
1549                 }
1550         }
1551
1552 out_reenable:
1553         /*
1554          * Re-enable interrupt
1555          */
1556         jwrite32f(jme, JME_IENS, INTR_ENABLE);
1557 }
1558
1559 static irqreturn_t
1560 jme_intr(int irq, void *dev_id)
1561 {
1562         struct net_device *netdev = dev_id;
1563         struct jme_adapter *jme = netdev_priv(netdev);
1564         u32 intrstat;
1565
1566         intrstat = jread32(jme, JME_IEVE);
1567
1568         /*
1569          * Check if it's really an interrupt for us
1570          */
1571         if (unlikely((intrstat & INTR_ENABLE) == 0))
1572                 return IRQ_NONE;
1573
1574         /*
1575          * Check if the device still exist
1576          */
1577         if (unlikely(intrstat == ~((typeof(intrstat))0)))
1578                 return IRQ_NONE;
1579
1580         jme_intr_msi(jme, intrstat);
1581
1582         return IRQ_HANDLED;
1583 }
1584
1585 static irqreturn_t
1586 jme_msi(int irq, void *dev_id)
1587 {
1588         struct net_device *netdev = dev_id;
1589         struct jme_adapter *jme = netdev_priv(netdev);
1590         u32 intrstat;
1591
1592         intrstat = jread32(jme, JME_IEVE);
1593
1594         jme_intr_msi(jme, intrstat);
1595
1596         return IRQ_HANDLED;
1597 }
1598
1599 static void
1600 jme_reset_link(struct jme_adapter *jme)
1601 {
1602         jwrite32(jme, JME_TMCSR, TMCSR_SWIT);
1603 }
1604
1605 static void
1606 jme_restart_an(struct jme_adapter *jme)
1607 {
1608         u32 bmcr;
1609
1610         spin_lock_bh(&jme->phy_lock);
1611         bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
1612         bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
1613         jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, bmcr);
1614         spin_unlock_bh(&jme->phy_lock);
1615 }
1616
1617 static int
1618 jme_request_irq(struct jme_adapter *jme)
1619 {
1620         int rc;
1621         struct net_device *netdev = jme->dev;
1622         irq_handler_t handler = jme_intr;
1623         int irq_flags = IRQF_SHARED;
1624
1625         if (!pci_enable_msi(jme->pdev)) {
1626                 set_bit(JME_FLAG_MSI, &jme->flags);
1627                 handler = jme_msi;
1628                 irq_flags = 0;
1629         }
1630
1631         rc = request_irq(jme->pdev->irq, handler, irq_flags, netdev->name,
1632                           netdev);
1633         if (rc) {
1634                 netdev_err(netdev,
1635                            "Unable to request %s interrupt (return: %d)\n",
1636                            test_bit(JME_FLAG_MSI, &jme->flags) ? "MSI" : "INTx",
1637                            rc);
1638
1639                 if (test_bit(JME_FLAG_MSI, &jme->flags)) {
1640                         pci_disable_msi(jme->pdev);
1641                         clear_bit(JME_FLAG_MSI, &jme->flags);
1642                 }
1643         } else {
1644                 netdev->irq = jme->pdev->irq;
1645         }
1646
1647         return rc;
1648 }
1649
1650 static void
1651 jme_free_irq(struct jme_adapter *jme)
1652 {
1653         free_irq(jme->pdev->irq, jme->dev);
1654         if (test_bit(JME_FLAG_MSI, &jme->flags)) {
1655                 pci_disable_msi(jme->pdev);
1656                 clear_bit(JME_FLAG_MSI, &jme->flags);
1657                 jme->dev->irq = jme->pdev->irq;
1658         }
1659 }
1660
1661 static inline void
1662 jme_new_phy_on(struct jme_adapter *jme)
1663 {
1664         u32 reg;
1665
1666         reg = jread32(jme, JME_PHY_PWR);
1667         reg &= ~(PHY_PWR_DWN1SEL | PHY_PWR_DWN1SW |
1668                  PHY_PWR_DWN2 | PHY_PWR_CLKSEL);
1669         jwrite32(jme, JME_PHY_PWR, reg);
1670
1671         pci_read_config_dword(jme->pdev, PCI_PRIV_PE1, &reg);
1672         reg &= ~PE1_GPREG0_PBG;
1673         reg |= PE1_GPREG0_ENBG;
1674         pci_write_config_dword(jme->pdev, PCI_PRIV_PE1, reg);
1675 }
1676
1677 static inline void
1678 jme_new_phy_off(struct jme_adapter *jme)
1679 {
1680         u32 reg;
1681
1682         reg = jread32(jme, JME_PHY_PWR);
1683         reg |= PHY_PWR_DWN1SEL | PHY_PWR_DWN1SW |
1684                PHY_PWR_DWN2 | PHY_PWR_CLKSEL;
1685         jwrite32(jme, JME_PHY_PWR, reg);
1686
1687         pci_read_config_dword(jme->pdev, PCI_PRIV_PE1, &reg);
1688         reg &= ~PE1_GPREG0_PBG;
1689         reg |= PE1_GPREG0_PDD3COLD;
1690         pci_write_config_dword(jme->pdev, PCI_PRIV_PE1, reg);
1691 }
1692
1693 static inline void
1694 jme_phy_on(struct jme_adapter *jme)
1695 {
1696         u32 bmcr;
1697
1698         bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
1699         bmcr &= ~BMCR_PDOWN;
1700         jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, bmcr);
1701
1702         if (new_phy_power_ctrl(jme->chip_main_rev))
1703                 jme_new_phy_on(jme);
1704 }
1705
1706 static inline void
1707 jme_phy_off(struct jme_adapter *jme)
1708 {
1709         u32 bmcr;
1710
1711         bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
1712         bmcr |= BMCR_PDOWN;
1713         jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, bmcr);
1714
1715         if (new_phy_power_ctrl(jme->chip_main_rev))
1716                 jme_new_phy_off(jme);
1717 }
1718
1719 static int
1720 jme_open(struct net_device *netdev)
1721 {
1722         struct jme_adapter *jme = netdev_priv(netdev);
1723         int rc;
1724
1725         jme_clear_pm(jme);
1726         JME_NAPI_ENABLE(jme);
1727
1728         tasklet_enable(&jme->linkch_task);
1729         tasklet_enable(&jme->txclean_task);
1730         tasklet_hi_enable(&jme->rxclean_task);
1731         tasklet_hi_enable(&jme->rxempty_task);
1732
1733         rc = jme_request_irq(jme);
1734         if (rc)
1735                 goto err_out;
1736
1737         jme_start_irq(jme);
1738
1739         jme_phy_on(jme);
1740         if (test_bit(JME_FLAG_SSET, &jme->flags))
1741                 jme_set_settings(netdev, &jme->old_ecmd);
1742         else
1743                 jme_reset_phy_processor(jme);
1744
1745         jme_reset_link(jme);
1746
1747         return 0;
1748
1749 err_out:
1750         netif_stop_queue(netdev);
1751         netif_carrier_off(netdev);
1752         return rc;
1753 }
1754
1755 static void
1756 jme_set_100m_half(struct jme_adapter *jme)
1757 {
1758         u32 bmcr, tmp;
1759
1760         jme_phy_on(jme);
1761         bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
1762         tmp = bmcr & ~(BMCR_ANENABLE | BMCR_SPEED100 |
1763                        BMCR_SPEED1000 | BMCR_FULLDPLX);
1764         tmp |= BMCR_SPEED100;
1765
1766         if (bmcr != tmp)
1767                 jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, tmp);
1768
1769         if (jme->fpgaver)
1770                 jwrite32(jme, JME_GHC, GHC_SPEED_100M | GHC_LINK_POLL);
1771         else
1772                 jwrite32(jme, JME_GHC, GHC_SPEED_100M);
1773 }
1774
1775 #define JME_WAIT_LINK_TIME 2000 /* 2000ms */
1776 static void
1777 jme_wait_link(struct jme_adapter *jme)
1778 {
1779         u32 phylink, to = JME_WAIT_LINK_TIME;
1780
1781         mdelay(1000);
1782         phylink = jme_linkstat_from_phy(jme);
1783         while (!(phylink & PHY_LINK_UP) && (to -= 10) > 0) {
1784                 mdelay(10);
1785                 phylink = jme_linkstat_from_phy(jme);
1786         }
1787 }
1788
1789 static void
1790 jme_powersave_phy(struct jme_adapter *jme)
1791 {
1792         if (jme->reg_pmcs) {
1793                 jme_set_100m_half(jme);
1794
1795                 if (jme->reg_pmcs & (PMCS_LFEN | PMCS_LREN))
1796                         jme_wait_link(jme);
1797
1798                 jwrite32(jme, JME_PMCS, jme->reg_pmcs);
1799         } else {
1800                 jme_phy_off(jme);
1801         }
1802 }
1803
1804 static int
1805 jme_close(struct net_device *netdev)
1806 {
1807         struct jme_adapter *jme = netdev_priv(netdev);
1808
1809         netif_stop_queue(netdev);
1810         netif_carrier_off(netdev);
1811
1812         jme_stop_irq(jme);
1813         jme_free_irq(jme);
1814
1815         JME_NAPI_DISABLE(jme);
1816
1817         tasklet_disable(&jme->linkch_task);
1818         tasklet_disable(&jme->txclean_task);
1819         tasklet_disable(&jme->rxclean_task);
1820         tasklet_disable(&jme->rxempty_task);
1821
1822         jme_disable_rx_engine(jme);
1823         jme_disable_tx_engine(jme);
1824         jme_reset_mac_processor(jme);
1825         jme_free_rx_resources(jme);
1826         jme_free_tx_resources(jme);
1827         jme->phylink = 0;
1828         jme_phy_off(jme);
1829
1830         return 0;
1831 }
1832
1833 static int
1834 jme_alloc_txdesc(struct jme_adapter *jme,
1835                         struct sk_buff *skb)
1836 {
1837         struct jme_ring *txring = &(jme->txring[0]);
1838         int idx, nr_alloc, mask = jme->tx_ring_mask;
1839
1840         idx = txring->next_to_use;
1841         nr_alloc = skb_shinfo(skb)->nr_frags + 2;
1842
1843         if (unlikely(atomic_read(&txring->nr_free) < nr_alloc))
1844                 return -1;
1845
1846         atomic_sub(nr_alloc, &txring->nr_free);
1847
1848         txring->next_to_use = (txring->next_to_use + nr_alloc) & mask;
1849
1850         return idx;
1851 }
1852
1853 static void
1854 jme_fill_tx_map(struct pci_dev *pdev,
1855                 struct txdesc *txdesc,
1856                 struct jme_buffer_info *txbi,
1857                 struct page *page,
1858                 u32 page_offset,
1859                 u32 len,
1860                 u8 hidma)
1861 {
1862         dma_addr_t dmaaddr;
1863
1864         dmaaddr = pci_map_page(pdev,
1865                                 page,
1866                                 page_offset,
1867                                 len,
1868                                 PCI_DMA_TODEVICE);
1869
1870         pci_dma_sync_single_for_device(pdev,
1871                                        dmaaddr,
1872                                        len,
1873                                        PCI_DMA_TODEVICE);
1874
1875         txdesc->dw[0] = 0;
1876         txdesc->dw[1] = 0;
1877         txdesc->desc2.flags     = TXFLAG_OWN;
1878         txdesc->desc2.flags     |= (hidma) ? TXFLAG_64BIT : 0;
1879         txdesc->desc2.datalen   = cpu_to_le16(len);
1880         txdesc->desc2.bufaddrh  = cpu_to_le32((__u64)dmaaddr >> 32);
1881         txdesc->desc2.bufaddrl  = cpu_to_le32(
1882                                         (__u64)dmaaddr & 0xFFFFFFFFUL);
1883
1884         txbi->mapping = dmaaddr;
1885         txbi->len = len;
1886 }
1887
1888 static void
1889 jme_map_tx_skb(struct jme_adapter *jme, struct sk_buff *skb, int idx)
1890 {
1891         struct jme_ring *txring = &(jme->txring[0]);
1892         struct txdesc *txdesc = txring->desc, *ctxdesc;
1893         struct jme_buffer_info *txbi = txring->bufinf, *ctxbi;
1894         u8 hidma = jme->dev->features & NETIF_F_HIGHDMA;
1895         int i, nr_frags = skb_shinfo(skb)->nr_frags;
1896         int mask = jme->tx_ring_mask;
1897         struct skb_frag_struct *frag;
1898         u32 len;
1899
1900         for (i = 0 ; i < nr_frags ; ++i) {
1901                 frag = &skb_shinfo(skb)->frags[i];
1902                 ctxdesc = txdesc + ((idx + i + 2) & (mask));
1903                 ctxbi = txbi + ((idx + i + 2) & (mask));
1904
1905                 jme_fill_tx_map(jme->pdev, ctxdesc, ctxbi, frag->page,
1906                                  frag->page_offset, frag->size, hidma);
1907         }
1908
1909         len = skb_is_nonlinear(skb) ? skb_headlen(skb) : skb->len;
1910         ctxdesc = txdesc + ((idx + 1) & (mask));
1911         ctxbi = txbi + ((idx + 1) & (mask));
1912         jme_fill_tx_map(jme->pdev, ctxdesc, ctxbi, virt_to_page(skb->data),
1913                         offset_in_page(skb->data), len, hidma);
1914
1915 }
1916
1917 static int
1918 jme_expand_header(struct jme_adapter *jme, struct sk_buff *skb)
1919 {
1920         if (unlikely(skb_shinfo(skb)->gso_size &&
1921                         skb_header_cloned(skb) &&
1922                         pskb_expand_head(skb, 0, 0, GFP_ATOMIC))) {
1923                 dev_kfree_skb(skb);
1924                 return -1;
1925         }
1926
1927         return 0;
1928 }
1929
1930 static int
1931 jme_tx_tso(struct sk_buff *skb, __le16 *mss, u8 *flags)
1932 {
1933         *mss = cpu_to_le16(skb_shinfo(skb)->gso_size << TXDESC_MSS_SHIFT);
1934         if (*mss) {
1935                 *flags |= TXFLAG_LSEN;
1936
1937                 if (skb->protocol == htons(ETH_P_IP)) {
1938                         struct iphdr *iph = ip_hdr(skb);
1939
1940                         iph->check = 0;
1941                         tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
1942                                                                 iph->daddr, 0,
1943                                                                 IPPROTO_TCP,
1944                                                                 0);
1945                 } else {
1946                         struct ipv6hdr *ip6h = ipv6_hdr(skb);
1947
1948                         tcp_hdr(skb)->check = ~csum_ipv6_magic(&ip6h->saddr,
1949                                                                 &ip6h->daddr, 0,
1950                                                                 IPPROTO_TCP,
1951                                                                 0);
1952                 }
1953
1954                 return 0;
1955         }
1956
1957         return 1;
1958 }
1959
1960 static void
1961 jme_tx_csum(struct jme_adapter *jme, struct sk_buff *skb, u8 *flags)
1962 {
1963         if (skb->ip_summed == CHECKSUM_PARTIAL) {
1964                 u8 ip_proto;
1965
1966                 switch (skb->protocol) {
1967                 case htons(ETH_P_IP):
1968                         ip_proto = ip_hdr(skb)->protocol;
1969                         break;
1970                 case htons(ETH_P_IPV6):
1971                         ip_proto = ipv6_hdr(skb)->nexthdr;
1972                         break;
1973                 default:
1974                         ip_proto = 0;
1975                         break;
1976                 }
1977
1978                 switch (ip_proto) {
1979                 case IPPROTO_TCP:
1980                         *flags |= TXFLAG_TCPCS;
1981                         break;
1982                 case IPPROTO_UDP:
1983                         *flags |= TXFLAG_UDPCS;
1984                         break;
1985                 default:
1986                         netif_err(jme, tx_err, jme->dev, "Error upper layer protocol\n");
1987                         break;
1988                 }
1989         }
1990 }
1991
1992 static inline void
1993 jme_tx_vlan(struct sk_buff *skb, __le16 *vlan, u8 *flags)
1994 {
1995         if (vlan_tx_tag_present(skb)) {
1996                 *flags |= TXFLAG_TAGON;
1997                 *vlan = cpu_to_le16(vlan_tx_tag_get(skb));
1998         }
1999 }
2000
2001 static int
2002 jme_fill_tx_desc(struct jme_adapter *jme, struct sk_buff *skb, int idx)
2003 {
2004         struct jme_ring *txring = &(jme->txring[0]);
2005         struct txdesc *txdesc;
2006         struct jme_buffer_info *txbi;
2007         u8 flags;
2008
2009         txdesc = (struct txdesc *)txring->desc + idx;
2010         txbi = txring->bufinf + idx;
2011
2012         txdesc->dw[0] = 0;
2013         txdesc->dw[1] = 0;
2014         txdesc->dw[2] = 0;
2015         txdesc->dw[3] = 0;
2016         txdesc->desc1.pktsize = cpu_to_le16(skb->len);
2017         /*
2018          * Set OWN bit at final.
2019          * When kernel transmit faster than NIC.
2020          * And NIC trying to send this descriptor before we tell
2021          * it to start sending this TX queue.
2022          * Other fields are already filled correctly.
2023          */
2024         wmb();
2025         flags = TXFLAG_OWN | TXFLAG_INT;
2026         /*
2027          * Set checksum flags while not tso
2028          */
2029         if (jme_tx_tso(skb, &txdesc->desc1.mss, &flags))
2030                 jme_tx_csum(jme, skb, &flags);
2031         jme_tx_vlan(skb, &txdesc->desc1.vlan, &flags);
2032         jme_map_tx_skb(jme, skb, idx);
2033         txdesc->desc1.flags = flags;
2034         /*
2035          * Set tx buffer info after telling NIC to send
2036          * For better tx_clean timing
2037          */
2038         wmb();
2039         txbi->nr_desc = skb_shinfo(skb)->nr_frags + 2;
2040         txbi->skb = skb;
2041         txbi->len = skb->len;
2042         txbi->start_xmit = jiffies;
2043         if (!txbi->start_xmit)
2044                 txbi->start_xmit = (0UL-1);
2045
2046         return 0;
2047 }
2048
2049 static void
2050 jme_stop_queue_if_full(struct jme_adapter *jme)
2051 {
2052         struct jme_ring *txring = &(jme->txring[0]);
2053         struct jme_buffer_info *txbi = txring->bufinf;
2054         int idx = atomic_read(&txring->next_to_clean);
2055
2056         txbi += idx;
2057
2058         smp_wmb();
2059         if (unlikely(atomic_read(&txring->nr_free) < (MAX_SKB_FRAGS+2))) {
2060                 netif_stop_queue(jme->dev);
2061                 netif_info(jme, tx_queued, jme->dev, "TX Queue Paused\n");
2062                 smp_wmb();
2063                 if (atomic_read(&txring->nr_free)
2064                         >= (jme->tx_wake_threshold)) {
2065                         netif_wake_queue(jme->dev);
2066                         netif_info(jme, tx_queued, jme->dev, "TX Queue Fast Waked\n");
2067                 }
2068         }
2069
2070         if (unlikely(txbi->start_xmit &&
2071                         (jiffies - txbi->start_xmit) >= TX_TIMEOUT &&
2072                         txbi->skb)) {
2073                 netif_stop_queue(jme->dev);
2074                 netif_info(jme, tx_queued, jme->dev,
2075                            "TX Queue Stopped %d@%lu\n", idx, jiffies);
2076         }
2077 }
2078
2079 /*
2080  * This function is already protected by netif_tx_lock()
2081  */
2082
2083 static netdev_tx_t
2084 jme_start_xmit(struct sk_buff *skb, struct net_device *netdev)
2085 {
2086         struct jme_adapter *jme = netdev_priv(netdev);
2087         int idx;
2088
2089         if (unlikely(jme_expand_header(jme, skb))) {
2090                 ++(NET_STAT(jme).tx_dropped);
2091                 return NETDEV_TX_OK;
2092         }
2093
2094         idx = jme_alloc_txdesc(jme, skb);
2095
2096         if (unlikely(idx < 0)) {
2097                 netif_stop_queue(netdev);
2098                 netif_err(jme, tx_err, jme->dev,
2099                           "BUG! Tx ring full when queue awake!\n");
2100
2101                 return NETDEV_TX_BUSY;
2102         }
2103
2104         jme_fill_tx_desc(jme, skb, idx);
2105
2106         jwrite32(jme, JME_TXCS, jme->reg_txcs |
2107                                 TXCS_SELECT_QUEUE0 |
2108                                 TXCS_QUEUE0S |
2109                                 TXCS_ENABLE);
2110
2111         tx_dbg(jme, "xmit: %d+%d@%lu\n",
2112                idx, skb_shinfo(skb)->nr_frags + 2, jiffies);
2113         jme_stop_queue_if_full(jme);
2114
2115         return NETDEV_TX_OK;
2116 }
2117
2118 static void
2119 jme_set_unicastaddr(struct net_device *netdev)
2120 {
2121         struct jme_adapter *jme = netdev_priv(netdev);
2122         u32 val;
2123
2124         val = (netdev->dev_addr[3] & 0xff) << 24 |
2125               (netdev->dev_addr[2] & 0xff) << 16 |
2126               (netdev->dev_addr[1] & 0xff) <<  8 |
2127               (netdev->dev_addr[0] & 0xff);
2128         jwrite32(jme, JME_RXUMA_LO, val);
2129         val = (netdev->dev_addr[5] & 0xff) << 8 |
2130               (netdev->dev_addr[4] & 0xff);
2131         jwrite32(jme, JME_RXUMA_HI, val);
2132 }
2133
2134 static int
2135 jme_set_macaddr(struct net_device *netdev, void *p)
2136 {
2137         struct jme_adapter *jme = netdev_priv(netdev);
2138         struct sockaddr *addr = p;
2139
2140         if (netif_running(netdev))
2141                 return -EBUSY;
2142
2143         spin_lock_bh(&jme->macaddr_lock);
2144         memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
2145         jme_set_unicastaddr(netdev);
2146         spin_unlock_bh(&jme->macaddr_lock);
2147
2148         return 0;
2149 }
2150
2151 static void
2152 jme_set_multi(struct net_device *netdev)
2153 {
2154         struct jme_adapter *jme = netdev_priv(netdev);
2155         u32 mc_hash[2] = {};
2156
2157         spin_lock_bh(&jme->rxmcs_lock);
2158
2159         jme->reg_rxmcs |= RXMCS_BRDFRAME | RXMCS_UNIFRAME;
2160
2161         if (netdev->flags & IFF_PROMISC) {
2162                 jme->reg_rxmcs |= RXMCS_ALLFRAME;
2163         } else if (netdev->flags & IFF_ALLMULTI) {
2164                 jme->reg_rxmcs |= RXMCS_ALLMULFRAME;
2165         } else if (netdev->flags & IFF_MULTICAST) {
2166                 struct netdev_hw_addr *ha;
2167                 int bit_nr;
2168
2169                 jme->reg_rxmcs |= RXMCS_MULFRAME | RXMCS_MULFILTERED;
2170                 netdev_for_each_mc_addr(ha, netdev) {
2171                         bit_nr = ether_crc(ETH_ALEN, ha->addr) & 0x3F;
2172                         mc_hash[bit_nr >> 5] |= 1 << (bit_nr & 0x1F);
2173                 }
2174
2175                 jwrite32(jme, JME_RXMCHT_LO, mc_hash[0]);
2176                 jwrite32(jme, JME_RXMCHT_HI, mc_hash[1]);
2177         }
2178
2179         wmb();
2180         jwrite32(jme, JME_RXMCS, jme->reg_rxmcs);
2181
2182         spin_unlock_bh(&jme->rxmcs_lock);
2183 }
2184
2185 static int
2186 jme_change_mtu(struct net_device *netdev, int new_mtu)
2187 {
2188         struct jme_adapter *jme = netdev_priv(netdev);
2189
2190         if (new_mtu == jme->old_mtu)
2191                 return 0;
2192
2193         if (((new_mtu + ETH_HLEN) > MAX_ETHERNET_JUMBO_PACKET_SIZE) ||
2194                 ((new_mtu) < IPV6_MIN_MTU))
2195                 return -EINVAL;
2196
2197         if (new_mtu > 4000) {
2198                 jme->reg_rxcs &= ~RXCS_FIFOTHNP;
2199                 jme->reg_rxcs |= RXCS_FIFOTHNP_64QW;
2200                 jme_restart_rx_engine(jme);
2201         } else {
2202                 jme->reg_rxcs &= ~RXCS_FIFOTHNP;
2203                 jme->reg_rxcs |= RXCS_FIFOTHNP_128QW;
2204                 jme_restart_rx_engine(jme);
2205         }
2206
2207         if (new_mtu > 1900) {
2208                 netdev->features &= ~(NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
2209                                 NETIF_F_TSO | NETIF_F_TSO6);
2210         } else {
2211                 if (test_bit(JME_FLAG_TXCSUM, &jme->flags))
2212                         netdev->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
2213                 if (test_bit(JME_FLAG_TSO, &jme->flags))
2214                         netdev->features |= NETIF_F_TSO | NETIF_F_TSO6;
2215         }
2216
2217         netdev->mtu = new_mtu;
2218         jme_reset_link(jme);
2219
2220         return 0;
2221 }
2222
2223 static void
2224 jme_tx_timeout(struct net_device *netdev)
2225 {
2226         struct jme_adapter *jme = netdev_priv(netdev);
2227
2228         jme->phylink = 0;
2229         jme_reset_phy_processor(jme);
2230         if (test_bit(JME_FLAG_SSET, &jme->flags))
2231                 jme_set_settings(netdev, &jme->old_ecmd);
2232
2233         /*
2234          * Force to Reset the link again
2235          */
2236         jme_reset_link(jme);
2237 }
2238
2239 static inline void jme_pause_rx(struct jme_adapter *jme)
2240 {
2241         atomic_dec(&jme->link_changing);
2242
2243         jme_set_rx_pcc(jme, PCC_OFF);
2244         if (test_bit(JME_FLAG_POLL, &jme->flags)) {
2245                 JME_NAPI_DISABLE(jme);
2246         } else {
2247                 tasklet_disable(&jme->rxclean_task);
2248                 tasklet_disable(&jme->rxempty_task);
2249         }
2250 }
2251
2252 static inline void jme_resume_rx(struct jme_adapter *jme)
2253 {
2254         struct dynpcc_info *dpi = &(jme->dpi);
2255
2256         if (test_bit(JME_FLAG_POLL, &jme->flags)) {
2257                 JME_NAPI_ENABLE(jme);
2258         } else {
2259                 tasklet_hi_enable(&jme->rxclean_task);
2260                 tasklet_hi_enable(&jme->rxempty_task);
2261         }
2262         dpi->cur                = PCC_P1;
2263         dpi->attempt            = PCC_P1;
2264         dpi->cnt                = 0;
2265         jme_set_rx_pcc(jme, PCC_P1);
2266
2267         atomic_inc(&jme->link_changing);
2268 }
2269
2270 static void
2271 jme_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp)
2272 {
2273         struct jme_adapter *jme = netdev_priv(netdev);
2274
2275         jme_pause_rx(jme);
2276         jme->vlgrp = grp;
2277         jme_resume_rx(jme);
2278 }
2279
2280 static void
2281 jme_get_drvinfo(struct net_device *netdev,
2282                      struct ethtool_drvinfo *info)
2283 {
2284         struct jme_adapter *jme = netdev_priv(netdev);
2285
2286         strcpy(info->driver, DRV_NAME);
2287         strcpy(info->version, DRV_VERSION);
2288         strcpy(info->bus_info, pci_name(jme->pdev));
2289 }
2290
2291 static int
2292 jme_get_regs_len(struct net_device *netdev)
2293 {
2294         return JME_REG_LEN;
2295 }
2296
2297 static void
2298 mmapio_memcpy(struct jme_adapter *jme, u32 *p, u32 reg, int len)
2299 {
2300         int i;
2301
2302         for (i = 0 ; i < len ; i += 4)
2303                 p[i >> 2] = jread32(jme, reg + i);
2304 }
2305
2306 static void
2307 mdio_memcpy(struct jme_adapter *jme, u32 *p, int reg_nr)
2308 {
2309         int i;
2310         u16 *p16 = (u16 *)p;
2311
2312         for (i = 0 ; i < reg_nr ; ++i)
2313                 p16[i] = jme_mdio_read(jme->dev, jme->mii_if.phy_id, i);
2314 }
2315
2316 static void
2317 jme_get_regs(struct net_device *netdev, struct ethtool_regs *regs, void *p)
2318 {
2319         struct jme_adapter *jme = netdev_priv(netdev);
2320         u32 *p32 = (u32 *)p;
2321
2322         memset(p, 0xFF, JME_REG_LEN);
2323
2324         regs->version = 1;
2325         mmapio_memcpy(jme, p32, JME_MAC, JME_MAC_LEN);
2326
2327         p32 += 0x100 >> 2;
2328         mmapio_memcpy(jme, p32, JME_PHY, JME_PHY_LEN);
2329
2330         p32 += 0x100 >> 2;
2331         mmapio_memcpy(jme, p32, JME_MISC, JME_MISC_LEN);
2332
2333         p32 += 0x100 >> 2;
2334         mmapio_memcpy(jme, p32, JME_RSS, JME_RSS_LEN);
2335
2336         p32 += 0x100 >> 2;
2337         mdio_memcpy(jme, p32, JME_PHY_REG_NR);
2338 }
2339
2340 static int
2341 jme_get_coalesce(struct net_device *netdev, struct ethtool_coalesce *ecmd)
2342 {
2343         struct jme_adapter *jme = netdev_priv(netdev);
2344
2345         ecmd->tx_coalesce_usecs = PCC_TX_TO;
2346         ecmd->tx_max_coalesced_frames = PCC_TX_CNT;
2347
2348         if (test_bit(JME_FLAG_POLL, &jme->flags)) {
2349                 ecmd->use_adaptive_rx_coalesce = false;
2350                 ecmd->rx_coalesce_usecs = 0;
2351                 ecmd->rx_max_coalesced_frames = 0;
2352                 return 0;
2353         }
2354
2355         ecmd->use_adaptive_rx_coalesce = true;
2356
2357         switch (jme->dpi.cur) {
2358         case PCC_P1:
2359                 ecmd->rx_coalesce_usecs = PCC_P1_TO;
2360                 ecmd->rx_max_coalesced_frames = PCC_P1_CNT;
2361                 break;
2362         case PCC_P2:
2363                 ecmd->rx_coalesce_usecs = PCC_P2_TO;
2364                 ecmd->rx_max_coalesced_frames = PCC_P2_CNT;
2365                 break;
2366         case PCC_P3:
2367                 ecmd->rx_coalesce_usecs = PCC_P3_TO;
2368                 ecmd->rx_max_coalesced_frames = PCC_P3_CNT;
2369                 break;
2370         default:
2371                 break;
2372         }
2373
2374         return 0;
2375 }
2376
2377 static int
2378 jme_set_coalesce(struct net_device *netdev, struct ethtool_coalesce *ecmd)
2379 {
2380         struct jme_adapter *jme = netdev_priv(netdev);
2381         struct dynpcc_info *dpi = &(jme->dpi);
2382
2383         if (netif_running(netdev))
2384                 return -EBUSY;
2385
2386         if (ecmd->use_adaptive_rx_coalesce &&
2387             test_bit(JME_FLAG_POLL, &jme->flags)) {
2388                 clear_bit(JME_FLAG_POLL, &jme->flags);
2389                 jme->jme_rx = netif_rx;
2390                 jme->jme_vlan_rx = vlan_hwaccel_rx;
2391                 dpi->cur                = PCC_P1;
2392                 dpi->attempt            = PCC_P1;
2393                 dpi->cnt                = 0;
2394                 jme_set_rx_pcc(jme, PCC_P1);
2395                 jme_interrupt_mode(jme);
2396         } else if (!(ecmd->use_adaptive_rx_coalesce) &&
2397                    !(test_bit(JME_FLAG_POLL, &jme->flags))) {
2398                 set_bit(JME_FLAG_POLL, &jme->flags);
2399                 jme->jme_rx = netif_receive_skb;
2400                 jme->jme_vlan_rx = vlan_hwaccel_receive_skb;
2401                 jme_interrupt_mode(jme);
2402         }
2403
2404         return 0;
2405 }
2406
2407 static void
2408 jme_get_pauseparam(struct net_device *netdev,
2409                         struct ethtool_pauseparam *ecmd)
2410 {
2411         struct jme_adapter *jme = netdev_priv(netdev);
2412         u32 val;
2413
2414         ecmd->tx_pause = (jme->reg_txpfc & TXPFC_PF_EN) != 0;
2415         ecmd->rx_pause = (jme->reg_rxmcs & RXMCS_FLOWCTRL) != 0;
2416
2417         spin_lock_bh(&jme->phy_lock);
2418         val = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_ADVERTISE);
2419         spin_unlock_bh(&jme->phy_lock);
2420
2421         ecmd->autoneg =
2422                 (val & (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM)) != 0;
2423 }
2424
2425 static int
2426 jme_set_pauseparam(struct net_device *netdev,
2427                         struct ethtool_pauseparam *ecmd)
2428 {
2429         struct jme_adapter *jme = netdev_priv(netdev);
2430         u32 val;
2431
2432         if (((jme->reg_txpfc & TXPFC_PF_EN) != 0) ^
2433                 (ecmd->tx_pause != 0)) {
2434
2435                 if (ecmd->tx_pause)
2436                         jme->reg_txpfc |= TXPFC_PF_EN;
2437                 else
2438                         jme->reg_txpfc &= ~TXPFC_PF_EN;
2439
2440                 jwrite32(jme, JME_TXPFC, jme->reg_txpfc);
2441         }
2442
2443         spin_lock_bh(&jme->rxmcs_lock);
2444         if (((jme->reg_rxmcs & RXMCS_FLOWCTRL) != 0) ^
2445                 (ecmd->rx_pause != 0)) {
2446
2447                 if (ecmd->rx_pause)
2448                         jme->reg_rxmcs |= RXMCS_FLOWCTRL;
2449                 else
2450                         jme->reg_rxmcs &= ~RXMCS_FLOWCTRL;
2451
2452                 jwrite32(jme, JME_RXMCS, jme->reg_rxmcs);
2453         }
2454         spin_unlock_bh(&jme->rxmcs_lock);
2455
2456         spin_lock_bh(&jme->phy_lock);
2457         val = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_ADVERTISE);
2458         if (((val & (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM)) != 0) ^
2459                 (ecmd->autoneg != 0)) {
2460
2461                 if (ecmd->autoneg)
2462                         val |= (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
2463                 else
2464                         val &= ~(ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
2465
2466                 jme_mdio_write(jme->dev, jme->mii_if.phy_id,
2467                                 MII_ADVERTISE, val);
2468         }
2469         spin_unlock_bh(&jme->phy_lock);
2470
2471         return 0;
2472 }
2473
2474 static void
2475 jme_get_wol(struct net_device *netdev,
2476                 struct ethtool_wolinfo *wol)
2477 {
2478         struct jme_adapter *jme = netdev_priv(netdev);
2479
2480         wol->supported = WAKE_MAGIC | WAKE_PHY;
2481
2482         wol->wolopts = 0;
2483
2484         if (jme->reg_pmcs & (PMCS_LFEN | PMCS_LREN))
2485                 wol->wolopts |= WAKE_PHY;
2486
2487         if (jme->reg_pmcs & PMCS_MFEN)
2488                 wol->wolopts |= WAKE_MAGIC;
2489
2490 }
2491
2492 static int
2493 jme_set_wol(struct net_device *netdev,
2494                 struct ethtool_wolinfo *wol)
2495 {
2496         struct jme_adapter *jme = netdev_priv(netdev);
2497
2498         if (wol->wolopts & (WAKE_MAGICSECURE |
2499                                 WAKE_UCAST |
2500                                 WAKE_MCAST |
2501                                 WAKE_BCAST |
2502                                 WAKE_ARP))
2503                 return -EOPNOTSUPP;
2504
2505         jme->reg_pmcs = 0;
2506
2507         if (wol->wolopts & WAKE_PHY)
2508                 jme->reg_pmcs |= PMCS_LFEN | PMCS_LREN;
2509
2510         if (wol->wolopts & WAKE_MAGIC)
2511                 jme->reg_pmcs |= PMCS_MFEN;
2512
2513         jwrite32(jme, JME_PMCS, jme->reg_pmcs);
2514
2515         return 0;
2516 }
2517
2518 static int
2519 jme_get_settings(struct net_device *netdev,
2520                      struct ethtool_cmd *ecmd)
2521 {
2522         struct jme_adapter *jme = netdev_priv(netdev);
2523         int rc;
2524
2525         spin_lock_bh(&jme->phy_lock);
2526         rc = mii_ethtool_gset(&(jme->mii_if), ecmd);
2527         spin_unlock_bh(&jme->phy_lock);
2528         return rc;
2529 }
2530
2531 static int
2532 jme_set_settings(struct net_device *netdev,
2533                      struct ethtool_cmd *ecmd)
2534 {
2535         struct jme_adapter *jme = netdev_priv(netdev);
2536         int rc, fdc = 0;
2537
2538         if (ecmd->speed == SPEED_1000 && ecmd->autoneg != AUTONEG_ENABLE)
2539                 return -EINVAL;
2540
2541         /*
2542          * Check If user changed duplex only while force_media.
2543          * Hardware would not generate link change interrupt.
2544          */
2545         if (jme->mii_if.force_media &&
2546         ecmd->autoneg != AUTONEG_ENABLE &&
2547         (jme->mii_if.full_duplex != ecmd->duplex))
2548                 fdc = 1;
2549
2550         spin_lock_bh(&jme->phy_lock);
2551         rc = mii_ethtool_sset(&(jme->mii_if), ecmd);
2552         spin_unlock_bh(&jme->phy_lock);
2553
2554         if (!rc) {
2555                 if (fdc)
2556                         jme_reset_link(jme);
2557                 jme->old_ecmd = *ecmd;
2558                 set_bit(JME_FLAG_SSET, &jme->flags);
2559         }
2560
2561         return rc;
2562 }
2563
2564 static int
2565 jme_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd)
2566 {
2567         int rc;
2568         struct jme_adapter *jme = netdev_priv(netdev);
2569         struct mii_ioctl_data *mii_data = if_mii(rq);
2570         unsigned int duplex_chg;
2571
2572         if (cmd == SIOCSMIIREG) {
2573                 u16 val = mii_data->val_in;
2574                 if (!(val & (BMCR_RESET|BMCR_ANENABLE)) &&
2575                     (val & BMCR_SPEED1000))
2576                         return -EINVAL;
2577         }
2578
2579         spin_lock_bh(&jme->phy_lock);
2580         rc = generic_mii_ioctl(&jme->mii_if, mii_data, cmd, &duplex_chg);
2581         spin_unlock_bh(&jme->phy_lock);
2582
2583         if (!rc && (cmd == SIOCSMIIREG)) {
2584                 if (duplex_chg)
2585                         jme_reset_link(jme);
2586                 jme_get_settings(netdev, &jme->old_ecmd);
2587                 set_bit(JME_FLAG_SSET, &jme->flags);
2588         }
2589
2590         return rc;
2591 }
2592
2593 static u32
2594 jme_get_link(struct net_device *netdev)
2595 {
2596         struct jme_adapter *jme = netdev_priv(netdev);
2597         return jread32(jme, JME_PHY_LINK) & PHY_LINK_UP;
2598 }
2599
2600 static u32
2601 jme_get_msglevel(struct net_device *netdev)
2602 {
2603         struct jme_adapter *jme = netdev_priv(netdev);
2604         return jme->msg_enable;
2605 }
2606
2607 static void
2608 jme_set_msglevel(struct net_device *netdev, u32 value)
2609 {
2610         struct jme_adapter *jme = netdev_priv(netdev);
2611         jme->msg_enable = value;
2612 }
2613
2614 static u32
2615 jme_get_rx_csum(struct net_device *netdev)
2616 {
2617         struct jme_adapter *jme = netdev_priv(netdev);
2618         return jme->reg_rxmcs & RXMCS_CHECKSUM;
2619 }
2620
2621 static int
2622 jme_set_rx_csum(struct net_device *netdev, u32 on)
2623 {
2624         struct jme_adapter *jme = netdev_priv(netdev);
2625
2626         spin_lock_bh(&jme->rxmcs_lock);
2627         if (on)
2628                 jme->reg_rxmcs |= RXMCS_CHECKSUM;
2629         else
2630                 jme->reg_rxmcs &= ~RXMCS_CHECKSUM;
2631         jwrite32(jme, JME_RXMCS, jme->reg_rxmcs);
2632         spin_unlock_bh(&jme->rxmcs_lock);
2633
2634         return 0;
2635 }
2636
2637 static int
2638 jme_set_tx_csum(struct net_device *netdev, u32 on)
2639 {
2640         struct jme_adapter *jme = netdev_priv(netdev);
2641
2642         if (on) {
2643                 set_bit(JME_FLAG_TXCSUM, &jme->flags);
2644                 if (netdev->mtu <= 1900)
2645                         netdev->features |=
2646                                 NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
2647         } else {
2648                 clear_bit(JME_FLAG_TXCSUM, &jme->flags);
2649                 netdev->features &=
2650                                 ~(NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM);
2651         }
2652
2653         return 0;
2654 }
2655
2656 static int
2657 jme_set_tso(struct net_device *netdev, u32 on)
2658 {
2659         struct jme_adapter *jme = netdev_priv(netdev);
2660
2661         if (on) {
2662                 set_bit(JME_FLAG_TSO, &jme->flags);
2663                 if (netdev->mtu <= 1900)
2664                         netdev->features |= NETIF_F_TSO | NETIF_F_TSO6;
2665         } else {
2666                 clear_bit(JME_FLAG_TSO, &jme->flags);
2667                 netdev->features &= ~(NETIF_F_TSO | NETIF_F_TSO6);
2668         }
2669
2670         return 0;
2671 }
2672
2673 static int
2674 jme_nway_reset(struct net_device *netdev)
2675 {
2676         struct jme_adapter *jme = netdev_priv(netdev);
2677         jme_restart_an(jme);
2678         return 0;
2679 }
2680
2681 static u8
2682 jme_smb_read(struct jme_adapter *jme, unsigned int addr)
2683 {
2684         u32 val;
2685         int to;
2686
2687         val = jread32(jme, JME_SMBCSR);
2688         to = JME_SMB_BUSY_TIMEOUT;
2689         while ((val & SMBCSR_BUSY) && --to) {
2690                 msleep(1);
2691                 val = jread32(jme, JME_SMBCSR);
2692         }
2693         if (!to) {
2694                 netif_err(jme, hw, jme->dev, "SMB Bus Busy\n");
2695                 return 0xFF;
2696         }
2697
2698         jwrite32(jme, JME_SMBINTF,
2699                 ((addr << SMBINTF_HWADDR_SHIFT) & SMBINTF_HWADDR) |
2700                 SMBINTF_HWRWN_READ |
2701                 SMBINTF_HWCMD);
2702
2703         val = jread32(jme, JME_SMBINTF);
2704         to = JME_SMB_BUSY_TIMEOUT;
2705         while ((val & SMBINTF_HWCMD) && --to) {
2706                 msleep(1);
2707                 val = jread32(jme, JME_SMBINTF);
2708         }
2709         if (!to) {
2710                 netif_err(jme, hw, jme->dev, "SMB Bus Busy\n");
2711                 return 0xFF;
2712         }
2713
2714         return (val & SMBINTF_HWDATR) >> SMBINTF_HWDATR_SHIFT;
2715 }
2716
2717 static void
2718 jme_smb_write(struct jme_adapter *jme, unsigned int addr, u8 data)
2719 {
2720         u32 val;
2721         int to;
2722
2723         val = jread32(jme, JME_SMBCSR);
2724         to = JME_SMB_BUSY_TIMEOUT;
2725         while ((val & SMBCSR_BUSY) && --to) {
2726                 msleep(1);
2727                 val = jread32(jme, JME_SMBCSR);
2728         }
2729         if (!to) {
2730                 netif_err(jme, hw, jme->dev, "SMB Bus Busy\n");
2731                 return;
2732         }
2733
2734         jwrite32(jme, JME_SMBINTF,
2735                 ((data << SMBINTF_HWDATW_SHIFT) & SMBINTF_HWDATW) |
2736                 ((addr << SMBINTF_HWADDR_SHIFT) & SMBINTF_HWADDR) |
2737                 SMBINTF_HWRWN_WRITE |
2738                 SMBINTF_HWCMD);
2739
2740         val = jread32(jme, JME_SMBINTF);
2741         to = JME_SMB_BUSY_TIMEOUT;
2742         while ((val & SMBINTF_HWCMD) && --to) {
2743                 msleep(1);
2744                 val = jread32(jme, JME_SMBINTF);
2745         }
2746         if (!to) {
2747                 netif_err(jme, hw, jme->dev, "SMB Bus Busy\n");
2748                 return;
2749         }
2750
2751         mdelay(2);
2752 }
2753
2754 static int
2755 jme_get_eeprom_len(struct net_device *netdev)
2756 {
2757         struct jme_adapter *jme = netdev_priv(netdev);
2758         u32 val;
2759         val = jread32(jme, JME_SMBCSR);
2760         return (val & SMBCSR_EEPROMD) ? JME_SMB_LEN : 0;
2761 }
2762
2763 static int
2764 jme_get_eeprom(struct net_device *netdev,
2765                 struct ethtool_eeprom *eeprom, u8 *data)
2766 {
2767         struct jme_adapter *jme = netdev_priv(netdev);
2768         int i, offset = eeprom->offset, len = eeprom->len;
2769
2770         /*
2771          * ethtool will check the boundary for us
2772          */
2773         eeprom->magic = JME_EEPROM_MAGIC;
2774         for (i = 0 ; i < len ; ++i)
2775                 data[i] = jme_smb_read(jme, i + offset);
2776
2777         return 0;
2778 }
2779
2780 static int
2781 jme_set_eeprom(struct net_device *netdev,
2782                 struct ethtool_eeprom *eeprom, u8 *data)
2783 {
2784         struct jme_adapter *jme = netdev_priv(netdev);
2785         int i, offset = eeprom->offset, len = eeprom->len;
2786
2787         if (eeprom->magic != JME_EEPROM_MAGIC)
2788                 return -EINVAL;
2789
2790         /*
2791          * ethtool will check the boundary for us
2792          */
2793         for (i = 0 ; i < len ; ++i)
2794                 jme_smb_write(jme, i + offset, data[i]);
2795
2796         return 0;
2797 }
2798
2799 static const struct ethtool_ops jme_ethtool_ops = {
2800         .get_drvinfo            = jme_get_drvinfo,
2801         .get_regs_len           = jme_get_regs_len,
2802         .get_regs               = jme_get_regs,
2803         .get_coalesce           = jme_get_coalesce,
2804         .set_coalesce           = jme_set_coalesce,
2805         .get_pauseparam         = jme_get_pauseparam,
2806         .set_pauseparam         = jme_set_pauseparam,
2807         .get_wol                = jme_get_wol,
2808         .set_wol                = jme_set_wol,
2809         .get_settings           = jme_get_settings,
2810         .set_settings           = jme_set_settings,
2811         .get_link               = jme_get_link,
2812         .get_msglevel           = jme_get_msglevel,
2813         .set_msglevel           = jme_set_msglevel,
2814         .get_rx_csum            = jme_get_rx_csum,
2815         .set_rx_csum            = jme_set_rx_csum,
2816         .set_tx_csum            = jme_set_tx_csum,
2817         .set_tso                = jme_set_tso,
2818         .set_sg                 = ethtool_op_set_sg,
2819         .nway_reset             = jme_nway_reset,
2820         .get_eeprom_len         = jme_get_eeprom_len,
2821         .get_eeprom             = jme_get_eeprom,
2822         .set_eeprom             = jme_set_eeprom,
2823 };
2824
2825 static int
2826 jme_pci_dma64(struct pci_dev *pdev)
2827 {
2828         if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250 &&
2829             !pci_set_dma_mask(pdev, DMA_BIT_MASK(64)))
2830                 if (!pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)))
2831                         return 1;
2832
2833         if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250 &&
2834             !pci_set_dma_mask(pdev, DMA_BIT_MASK(40)))
2835                 if (!pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(40)))
2836                         return 1;
2837
2838         if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32)))
2839                 if (!pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)))
2840                         return 0;
2841
2842         return -1;
2843 }
2844
2845 static inline void
2846 jme_phy_init(struct jme_adapter *jme)
2847 {
2848         u16 reg26;
2849
2850         reg26 = jme_mdio_read(jme->dev, jme->mii_if.phy_id, 26);
2851         jme_mdio_write(jme->dev, jme->mii_if.phy_id, 26, reg26 | 0x1000);
2852 }
2853
2854 static inline void
2855 jme_check_hw_ver(struct jme_adapter *jme)
2856 {
2857         u32 chipmode;
2858
2859         chipmode = jread32(jme, JME_CHIPMODE);
2860
2861         jme->fpgaver = (chipmode & CM_FPGAVER_MASK) >> CM_FPGAVER_SHIFT;
2862         jme->chiprev = (chipmode & CM_CHIPREV_MASK) >> CM_CHIPREV_SHIFT;
2863         jme->chip_main_rev = jme->chiprev & 0xF;
2864         jme->chip_sub_rev = (jme->chiprev >> 4) & 0xF;
2865 }
2866
2867 static const struct net_device_ops jme_netdev_ops = {
2868         .ndo_open               = jme_open,
2869         .ndo_stop               = jme_close,
2870         .ndo_validate_addr      = eth_validate_addr,
2871         .ndo_do_ioctl           = jme_ioctl,
2872         .ndo_start_xmit         = jme_start_xmit,
2873         .ndo_set_mac_address    = jme_set_macaddr,
2874         .ndo_set_multicast_list = jme_set_multi,
2875         .ndo_change_mtu         = jme_change_mtu,
2876         .ndo_tx_timeout         = jme_tx_timeout,
2877         .ndo_vlan_rx_register   = jme_vlan_rx_register,
2878 };
2879
2880 static int __devinit
2881 jme_init_one(struct pci_dev *pdev,
2882              const struct pci_device_id *ent)
2883 {
2884         int rc = 0, using_dac, i;
2885         struct net_device *netdev;
2886         struct jme_adapter *jme;
2887         u16 bmcr, bmsr;
2888         u32 apmc;
2889
2890         /*
2891          * set up PCI device basics
2892          */
2893         rc = pci_enable_device(pdev);
2894         if (rc) {
2895                 pr_err("Cannot enable PCI device\n");
2896                 goto err_out;
2897         }
2898
2899         using_dac = jme_pci_dma64(pdev);
2900         if (using_dac < 0) {
2901                 pr_err("Cannot set PCI DMA Mask\n");
2902                 rc = -EIO;
2903                 goto err_out_disable_pdev;
2904         }
2905
2906         if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
2907                 pr_err("No PCI resource region found\n");
2908                 rc = -ENOMEM;
2909                 goto err_out_disable_pdev;
2910         }
2911
2912         rc = pci_request_regions(pdev, DRV_NAME);
2913         if (rc) {
2914                 pr_err("Cannot obtain PCI resource region\n");
2915                 goto err_out_disable_pdev;
2916         }
2917
2918         pci_set_master(pdev);
2919
2920         /*
2921          * alloc and init net device
2922          */
2923         netdev = alloc_etherdev(sizeof(*jme));
2924         if (!netdev) {
2925                 pr_err("Cannot allocate netdev structure\n");
2926                 rc = -ENOMEM;
2927                 goto err_out_release_regions;
2928         }
2929         netdev->netdev_ops = &jme_netdev_ops;
2930         netdev->ethtool_ops             = &jme_ethtool_ops;
2931         netdev->watchdog_timeo          = TX_TIMEOUT;
2932         netdev->features                =       NETIF_F_IP_CSUM |
2933                                                 NETIF_F_IPV6_CSUM |
2934                                                 NETIF_F_SG |
2935                                                 NETIF_F_TSO |
2936                                                 NETIF_F_TSO6 |
2937                                                 NETIF_F_HW_VLAN_TX |
2938                                                 NETIF_F_HW_VLAN_RX;
2939         if (using_dac)
2940                 netdev->features        |=      NETIF_F_HIGHDMA;
2941
2942         SET_NETDEV_DEV(netdev, &pdev->dev);
2943         pci_set_drvdata(pdev, netdev);
2944
2945         /*
2946          * init adapter info
2947          */
2948         jme = netdev_priv(netdev);
2949         jme->pdev = pdev;
2950         jme->dev = netdev;
2951         jme->jme_rx = netif_rx;
2952         jme->jme_vlan_rx = vlan_hwaccel_rx;
2953         jme->old_mtu = netdev->mtu = 1500;
2954         jme->phylink = 0;
2955         jme->tx_ring_size = 1 << 10;
2956         jme->tx_ring_mask = jme->tx_ring_size - 1;
2957         jme->tx_wake_threshold = 1 << 9;
2958         jme->rx_ring_size = 1 << 9;
2959         jme->rx_ring_mask = jme->rx_ring_size - 1;
2960         jme->msg_enable = JME_DEF_MSG_ENABLE;
2961         jme->regs = ioremap(pci_resource_start(pdev, 0),
2962                              pci_resource_len(pdev, 0));
2963         if (!(jme->regs)) {
2964                 pr_err("Mapping PCI resource region error\n");
2965                 rc = -ENOMEM;
2966                 goto err_out_free_netdev;
2967         }
2968
2969         if (no_pseudohp) {
2970                 apmc = jread32(jme, JME_APMC) & ~JME_APMC_PSEUDO_HP_EN;
2971                 jwrite32(jme, JME_APMC, apmc);
2972         } else if (force_pseudohp) {
2973                 apmc = jread32(jme, JME_APMC) | JME_APMC_PSEUDO_HP_EN;
2974                 jwrite32(jme, JME_APMC, apmc);
2975         }
2976
2977         NETIF_NAPI_SET(netdev, &jme->napi, jme_poll, jme->rx_ring_size >> 2)
2978
2979         spin_lock_init(&jme->phy_lock);
2980         spin_lock_init(&jme->macaddr_lock);
2981         spin_lock_init(&jme->rxmcs_lock);
2982
2983         atomic_set(&jme->link_changing, 1);
2984         atomic_set(&jme->rx_cleaning, 1);
2985         atomic_set(&jme->tx_cleaning, 1);
2986         atomic_set(&jme->rx_empty, 1);
2987
2988         tasklet_init(&jme->pcc_task,
2989                      jme_pcc_tasklet,
2990                      (unsigned long) jme);
2991         tasklet_init(&jme->linkch_task,
2992                      jme_link_change_tasklet,
2993                      (unsigned long) jme);
2994         tasklet_init(&jme->txclean_task,
2995                      jme_tx_clean_tasklet,
2996                      (unsigned long) jme);
2997         tasklet_init(&jme->rxclean_task,
2998                      jme_rx_clean_tasklet,
2999                      (unsigned long) jme);
3000         tasklet_init(&jme->rxempty_task,
3001                      jme_rx_empty_tasklet,
3002                      (unsigned long) jme);
3003         tasklet_disable_nosync(&jme->linkch_task);
3004         tasklet_disable_nosync(&jme->txclean_task);
3005         tasklet_disable_nosync(&jme->rxclean_task);
3006         tasklet_disable_nosync(&jme->rxempty_task);
3007         jme->dpi.cur = PCC_P1;
3008
3009         jme->reg_ghc = 0;
3010         jme->reg_rxcs = RXCS_DEFAULT;
3011         jme->reg_rxmcs = RXMCS_DEFAULT;
3012         jme->reg_txpfc = 0;
3013         jme->reg_pmcs = PMCS_MFEN;
3014         jme->reg_gpreg1 = GPREG1_DEFAULT;
3015         set_bit(JME_FLAG_TXCSUM, &jme->flags);
3016         set_bit(JME_FLAG_TSO, &jme->flags);
3017
3018         /*
3019          * Get Max Read Req Size from PCI Config Space
3020          */
3021         pci_read_config_byte(pdev, PCI_DCSR_MRRS, &jme->mrrs);
3022         jme->mrrs &= PCI_DCSR_MRRS_MASK;
3023         switch (jme->mrrs) {
3024         case MRRS_128B:
3025                 jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_128B;
3026                 break;
3027         case MRRS_256B:
3028                 jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_256B;
3029                 break;
3030         default:
3031                 jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_512B;
3032                 break;
3033         }
3034
3035         /*
3036          * Must check before reset_mac_processor
3037          */
3038         jme_check_hw_ver(jme);
3039         jme->mii_if.dev = netdev;
3040         if (jme->fpgaver) {
3041                 jme->mii_if.phy_id = 0;
3042                 for (i = 1 ; i < 32 ; ++i) {
3043                         bmcr = jme_mdio_read(netdev, i, MII_BMCR);
3044                         bmsr = jme_mdio_read(netdev, i, MII_BMSR);
3045                         if (bmcr != 0xFFFFU && (bmcr != 0 || bmsr != 0)) {
3046                                 jme->mii_if.phy_id = i;
3047                                 break;
3048                         }
3049                 }
3050
3051                 if (!jme->mii_if.phy_id) {
3052                         rc = -EIO;
3053                         pr_err("Can not find phy_id\n");
3054                         goto err_out_unmap;
3055                 }
3056
3057                 jme->reg_ghc |= GHC_LINK_POLL;
3058         } else {
3059                 jme->mii_if.phy_id = 1;
3060         }
3061         if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250)
3062                 jme->mii_if.supports_gmii = true;
3063         else
3064                 jme->mii_if.supports_gmii = false;
3065         jme->mii_if.phy_id_mask = 0x1F;
3066         jme->mii_if.reg_num_mask = 0x1F;
3067         jme->mii_if.mdio_read = jme_mdio_read;
3068         jme->mii_if.mdio_write = jme_mdio_write;
3069
3070         jme_clear_pm(jme);
3071         jme_set_phyfifo_5level(jme);
3072         pci_read_config_byte(pdev, PCI_REVISION_ID, &jme->pcirev);
3073         if (!jme->fpgaver)
3074                 jme_phy_init(jme);
3075         jme_phy_off(jme);
3076
3077         /*
3078          * Reset MAC processor and reload EEPROM for MAC Address
3079          */
3080         jme_reset_mac_processor(jme);
3081         rc = jme_reload_eeprom(jme);
3082         if (rc) {
3083                 pr_err("Reload eeprom for reading MAC Address error\n");
3084                 goto err_out_unmap;
3085         }
3086         jme_load_macaddr(netdev);
3087
3088         /*
3089          * Tell stack that we are not ready to work until open()
3090          */
3091         netif_carrier_off(netdev);
3092
3093         rc = register_netdev(netdev);
3094         if (rc) {
3095                 pr_err("Cannot register net device\n");
3096                 goto err_out_unmap;
3097         }
3098
3099         netif_info(jme, probe, jme->dev, "%s%s chiprev:%x pcirev:%x macaddr:%pM\n",
3100                    (jme->pdev->device == PCI_DEVICE_ID_JMICRON_JMC250) ?
3101                    "JMC250 Gigabit Ethernet" :
3102                    (jme->pdev->device == PCI_DEVICE_ID_JMICRON_JMC260) ?
3103                    "JMC260 Fast Ethernet" : "Unknown",
3104                    (jme->fpgaver != 0) ? " (FPGA)" : "",
3105                    (jme->fpgaver != 0) ? jme->fpgaver : jme->chiprev,
3106                    jme->pcirev, netdev->dev_addr);
3107
3108         return 0;
3109
3110 err_out_unmap:
3111         iounmap(jme->regs);
3112 err_out_free_netdev:
3113         pci_set_drvdata(pdev, NULL);
3114         free_netdev(netdev);
3115 err_out_release_regions:
3116         pci_release_regions(pdev);
3117 err_out_disable_pdev:
3118         pci_disable_device(pdev);
3119 err_out:
3120         return rc;
3121 }
3122
3123 static void __devexit
3124 jme_remove_one(struct pci_dev *pdev)
3125 {
3126         struct net_device *netdev = pci_get_drvdata(pdev);
3127         struct jme_adapter *jme = netdev_priv(netdev);
3128
3129         unregister_netdev(netdev);
3130         iounmap(jme->regs);
3131         pci_set_drvdata(pdev, NULL);
3132         free_netdev(netdev);
3133         pci_release_regions(pdev);
3134         pci_disable_device(pdev);
3135
3136 }
3137
3138 static void
3139 jme_shutdown(struct pci_dev *pdev)
3140 {
3141         struct net_device *netdev = pci_get_drvdata(pdev);
3142         struct jme_adapter *jme = netdev_priv(netdev);
3143
3144         jme_powersave_phy(jme);
3145         pci_pme_active(pdev, true);
3146 }
3147
3148 #ifdef CONFIG_PM
3149 static int
3150 jme_suspend(struct pci_dev *pdev, pm_message_t state)
3151 {
3152         struct net_device *netdev = pci_get_drvdata(pdev);
3153         struct jme_adapter *jme = netdev_priv(netdev);
3154
3155         atomic_dec(&jme->link_changing);
3156
3157         netif_device_detach(netdev);
3158         netif_stop_queue(netdev);
3159         jme_stop_irq(jme);
3160
3161         tasklet_disable(&jme->txclean_task);
3162         tasklet_disable(&jme->rxclean_task);
3163         tasklet_disable(&jme->rxempty_task);
3164
3165         if (netif_carrier_ok(netdev)) {
3166                 if (test_bit(JME_FLAG_POLL, &jme->flags))
3167                         jme_polling_mode(jme);
3168
3169                 jme_stop_pcc_timer(jme);
3170                 jme_disable_rx_engine(jme);
3171                 jme_disable_tx_engine(jme);
3172                 jme_reset_mac_processor(jme);
3173                 jme_free_rx_resources(jme);
3174                 jme_free_tx_resources(jme);
3175                 netif_carrier_off(netdev);
3176                 jme->phylink = 0;
3177         }
3178
3179         tasklet_enable(&jme->txclean_task);
3180         tasklet_hi_enable(&jme->rxclean_task);
3181         tasklet_hi_enable(&jme->rxempty_task);
3182
3183         pci_save_state(pdev);
3184         jme_powersave_phy(jme);
3185         pci_enable_wake(jme->pdev, PCI_D3hot, true);
3186         pci_set_power_state(pdev, PCI_D3hot);
3187
3188         return 0;
3189 }
3190
3191 static int
3192 jme_resume(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_clear_pm(jme);
3198         pci_restore_state(pdev);
3199
3200         jme_phy_on(jme);
3201         if (test_bit(JME_FLAG_SSET, &jme->flags))
3202                 jme_set_settings(netdev, &jme->old_ecmd);
3203         else
3204                 jme_reset_phy_processor(jme);
3205
3206         jme_start_irq(jme);
3207         netif_device_attach(netdev);
3208
3209         atomic_inc(&jme->link_changing);
3210
3211         jme_reset_link(jme);
3212
3213         return 0;
3214 }
3215 #endif
3216
3217 static DEFINE_PCI_DEVICE_TABLE(jme_pci_tbl) = {
3218         { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMC250) },
3219         { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMC260) },
3220         { }
3221 };
3222
3223 static struct pci_driver jme_driver = {
3224         .name           = DRV_NAME,
3225         .id_table       = jme_pci_tbl,
3226         .probe          = jme_init_one,
3227         .remove         = __devexit_p(jme_remove_one),
3228 #ifdef CONFIG_PM
3229         .suspend        = jme_suspend,
3230         .resume         = jme_resume,
3231 #endif /* CONFIG_PM */
3232         .shutdown       = jme_shutdown,
3233 };
3234
3235 static int __init
3236 jme_init_module(void)
3237 {
3238         pr_info("JMicron JMC2XX ethernet driver version %s\n", DRV_VERSION);
3239         return pci_register_driver(&jme_driver);
3240 }
3241
3242 static void __exit
3243 jme_cleanup_module(void)
3244 {
3245         pci_unregister_driver(&jme_driver);
3246 }
3247
3248 module_init(jme_init_module);
3249 module_exit(jme_cleanup_module);
3250
3251 MODULE_AUTHOR("Guo-Fu Tseng <cooldavid@cooldavid.org>");
3252 MODULE_DESCRIPTION("JMicron JMC2x0 PCI Express Ethernet driver");
3253 MODULE_LICENSE("GPL");
3254 MODULE_VERSION(DRV_VERSION);
3255 MODULE_DEVICE_TABLE(pci, jme_pci_tbl);
3256