drivers/net/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         device_set_wakeup_enable(&jme->pdev->dev, 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         dma_addr_t mapping;
 757
 758         skb = netdev_alloc_skb(jme->dev,
 759                 jme->dev->mtu + RX_EXTRA_LEN);
 760         if (unlikely(!skb))
 761                 return -ENOMEM;
 762
 763         mapping = pci_map_page(jme->pdev, virt_to_page(skb->data),
 764                                offset_in_page(skb->data), skb_tailroom(skb),
 765                                PCI_DMA_FROMDEVICE);
 766         if (unlikely(pci_dma_mapping_error(jme->pdev, mapping))) {
 767                 dev_kfree_skb(skb);
 768                 return -ENOMEM;
 769         }
 770
 771         if (likely(rxbi->mapping))
 772                 pci_unmap_page(jme->pdev, rxbi->mapping,
 773                                rxbi->len, PCI_DMA_FROMDEVICE);
 774
 775         rxbi->skb = skb;
 776         rxbi->len = skb_tailroom(skb);
 777         rxbi->mapping = mapping;
 778         return 0;
 779 }
 780
 781 static void
 782 jme_free_rx_buf(struct jme_adapter *jme, int i)
 783 {
 784         struct jme_ring *rxring = &(jme->rxring[0]);
 785         struct jme_buffer_info *rxbi = rxring->bufinf;
 786         rxbi += i;
 787
 788         if (rxbi->skb) {
 789                 pci_unmap_page(jme->pdev,
 790                                  rxbi->mapping,
 791                                  rxbi->len,
 792                                  PCI_DMA_FROMDEVICE);
 793                 dev_kfree_skb(rxbi->skb);
 794                 rxbi->skb = NULL;
 795                 rxbi->mapping = 0;
 796                 rxbi->len = 0;
 797         }
 798 }
 799
 800 static void
 801 jme_free_rx_resources(struct jme_adapter *jme)
 802 {
 803         int i;
 804         struct jme_ring *rxring = &(jme->rxring[0]);
 805
 806         if (rxring->alloc) {
 807                 if (rxring->bufinf) {
 808                         for (i = 0 ; i < jme->rx_ring_size ; ++i)
 809                                 jme_free_rx_buf(jme, i);
 810                         kfree(rxring->bufinf);
 811                 }
 812
 813                 dma_free_coherent(&(jme->pdev->dev),
 814                                   RX_RING_ALLOC_SIZE(jme->rx_ring_size),
 815                                   rxring->alloc,
 816                                   rxring->dmaalloc);
 817                 rxring->alloc    = NULL;
 818                 rxring->desc     = NULL;
 819                 rxring->dmaalloc = 0;
 820                 rxring->dma      = 0;
 821                 rxring->bufinf   = NULL;
 822         }
 823         rxring->next_to_use   = 0;
 824         atomic_set(&rxring->next_to_clean, 0);
 825 }
 826
 827 static int
 828 jme_setup_rx_resources(struct jme_adapter *jme)
 829 {
 830         int i;
 831         struct jme_ring *rxring = &(jme->rxring[0]);
 832
 833         rxring->alloc = dma_alloc_coherent(&(jme->pdev->dev),
 834                                    RX_RING_ALLOC_SIZE(jme->rx_ring_size),
 835                                    &(rxring->dmaalloc),
 836                                    GFP_ATOMIC);
 837         if (!rxring->alloc)
 838                 goto err_set_null;
 839
 840         /*
 841          * 16 Bytes align
 842          */
 843         rxring->desc            = (void *)ALIGN((unsigned long)(rxring->alloc),
 844                                                 RING_DESC_ALIGN);
 845         rxring->dma             = ALIGN(rxring->dmaalloc, RING_DESC_ALIGN);
 846         rxring->next_to_use     = 0;
 847         atomic_set(&rxring->next_to_clean, 0);
 848
 849         rxring->bufinf          = kmalloc(sizeof(struct jme_buffer_info) *
 850                                         jme->rx_ring_size, GFP_ATOMIC);
 851         if (unlikely(!(rxring->bufinf)))
 852                 goto err_free_rxring;
 853
 854         /*
 855          * Initiallize Receive Descriptors
 856          */
 857         memset(rxring->bufinf, 0,
 858                 sizeof(struct jme_buffer_info) * jme->rx_ring_size);
 859         for (i = 0 ; i < jme->rx_ring_size ; ++i) {
 860                 if (unlikely(jme_make_new_rx_buf(jme, i))) {
 861                         jme_free_rx_resources(jme);
 862                         return -ENOMEM;
 863                 }
 864
 865                 jme_set_clean_rxdesc(jme, i);
 866         }
 867
 868         return 0;
 869
 870 err_free_rxring:
 871         dma_free_coherent(&(jme->pdev->dev),
 872                           RX_RING_ALLOC_SIZE(jme->rx_ring_size),
 873                           rxring->alloc,
 874                           rxring->dmaalloc);
 875 err_set_null:
 876         rxring->desc = NULL;
 877         rxring->dmaalloc = 0;
 878         rxring->dma = 0;
 879         rxring->bufinf = NULL;
 880
 881         return -ENOMEM;
 882 }
 883
 884 static inline void
 885 jme_enable_rx_engine(struct jme_adapter *jme)
 886 {
 887         /*
 888          * Select Queue 0
 889          */
 890         jwrite32(jme, JME_RXCS, jme->reg_rxcs |
 891                                 RXCS_QUEUESEL_Q0);
 892         wmb();
 893
 894         /*
 895          * Setup RX DMA Bass Address
 896          */
 897         jwrite32(jme, JME_RXDBA_LO, (__u64)(jme->rxring[0].dma) & 0xFFFFFFFFUL);
 898         jwrite32(jme, JME_RXDBA_HI, (__u64)(jme->rxring[0].dma) >> 32);
 899         jwrite32(jme, JME_RXNDA, (__u64)(jme->rxring[0].dma) & 0xFFFFFFFFUL);
 900
 901         /*
 902          * Setup RX Descriptor Count
 903          */
 904         jwrite32(jme, JME_RXQDC, jme->rx_ring_size);
 905
 906         /*
 907          * Setup Unicast Filter
 908          */
 909         jme_set_unicastaddr(jme->dev);
 910         jme_set_multi(jme->dev);
 911
 912         /*
 913          * Enable RX Engine
 914          */
 915         wmb();
 916         jwrite32f(jme, JME_RXCS, jme->reg_rxcs |
 917                                 RXCS_QUEUESEL_Q0 |
 918                                 RXCS_ENABLE |
 919                                 RXCS_QST);
 920
 921         /*
 922          * Start clock for RX MAC Processor
 923          */
 924         jme_mac_rxclk_on(jme);
 925 }
 926
 927 static inline void
 928 jme_restart_rx_engine(struct jme_adapter *jme)
 929 {
 930         /*
 931          * Start RX Engine
 932          */
 933         jwrite32(jme, JME_RXCS, jme->reg_rxcs |
 934                                 RXCS_QUEUESEL_Q0 |
 935                                 RXCS_ENABLE |
 936                                 RXCS_QST);
 937 }
 938
 939 static inline void
 940 jme_disable_rx_engine(struct jme_adapter *jme)
 941 {
 942         int i;
 943         u32 val;
 944
 945         /*
 946          * Disable RX Engine
 947          */
 948         jwrite32(jme, JME_RXCS, jme->reg_rxcs);
 949         wmb();
 950
 951         val = jread32(jme, JME_RXCS);
 952         for (i = JME_RX_DISABLE_TIMEOUT ; (val & RXCS_ENABLE) && i > 0 ; --i) {
 953                 mdelay(1);
 954                 val = jread32(jme, JME_RXCS);
 955                 rmb();
 956         }
 957
 958         if (!i)
 959                 pr_err("Disable RX engine timeout\n");
 960
 961         /*
 962          * Stop clock for RX MAC Processor
 963          */
 964         jme_mac_rxclk_off(jme);
 965 }
 966
 967 static u16
 968 jme_udpsum(struct sk_buff *skb)
 969 {
 970         u16 csum = 0xFFFFu;
 971
 972         if (skb->len < (ETH_HLEN + sizeof(struct iphdr)))
 973                 return csum;
 974         if (skb->protocol != htons(ETH_P_IP))
 975                 return csum;
 976         skb_set_network_header(skb, ETH_HLEN);
 977         if ((ip_hdr(skb)->protocol != IPPROTO_UDP) ||
 978             (skb->len < (ETH_HLEN +
 979                         (ip_hdr(skb)->ihl << 2) +
 980                         sizeof(struct udphdr)))) {
 981                 skb_reset_network_header(skb);
 982                 return csum;
 983         }
 984         skb_set_transport_header(skb,
 985                         ETH_HLEN + (ip_hdr(skb)->ihl << 2));
 986         csum = udp_hdr(skb)->check;
 987         skb_reset_transport_header(skb);
 988         skb_reset_network_header(skb);
 989
 990         return csum;
 991 }
 992
 993 static int
 994 jme_rxsum_ok(struct jme_adapter *jme, u16 flags, struct sk_buff *skb)
 995 {
 996         if (!(flags & (RXWBFLAG_TCPON | RXWBFLAG_UDPON | RXWBFLAG_IPV4)))
 997                 return false;
 998
 999         if (unlikely((flags & (RXWBFLAG_MF | RXWBFLAG_TCPON | RXWBFLAG_TCPCS))
1000                         == RXWBFLAG_TCPON)) {
1001                 if (flags & RXWBFLAG_IPV4)
1002                         netif_err(jme, rx_err, jme->dev, "TCP Checksum error\n");
1003                 return false;
1004         }
1005
1006         if (unlikely((flags & (RXWBFLAG_MF | RXWBFLAG_UDPON | RXWBFLAG_UDPCS))
1007                         == RXWBFLAG_UDPON) && jme_udpsum(skb)) {
1008                 if (flags & RXWBFLAG_IPV4)
1009                         netif_err(jme, rx_err, jme->dev, "UDP Checksum error\n");
1010                 return false;
1011         }
1012
1013         if (unlikely((flags & (RXWBFLAG_IPV4 | RXWBFLAG_IPCS))
1014                         == RXWBFLAG_IPV4)) {
1015                 netif_err(jme, rx_err, jme->dev, "IPv4 Checksum error\n");
1016                 return false;
1017         }
1018
1019         return true;
1020 }
1021
1022 static void
1023 jme_alloc_and_feed_skb(struct jme_adapter *jme, int idx)
1024 {
1025         struct jme_ring *rxring = &(jme->rxring[0]);
1026         struct rxdesc *rxdesc = rxring->desc;
1027         struct jme_buffer_info *rxbi = rxring->bufinf;
1028         struct sk_buff *skb;
1029         int framesize;
1030
1031         rxdesc += idx;
1032         rxbi += idx;
1033
1034         skb = rxbi->skb;
1035         pci_dma_sync_single_for_cpu(jme->pdev,
1036                                         rxbi->mapping,
1037                                         rxbi->len,
1038                                         PCI_DMA_FROMDEVICE);
1039
1040         if (unlikely(jme_make_new_rx_buf(jme, idx))) {
1041                 pci_dma_sync_single_for_device(jme->pdev,
1042                                                 rxbi->mapping,
1043                                                 rxbi->len,
1044                                                 PCI_DMA_FROMDEVICE);
1045
1046                 ++(NET_STAT(jme).rx_dropped);
1047         } else {
1048                 framesize = le16_to_cpu(rxdesc->descwb.framesize)
1049                                 - RX_PREPAD_SIZE;
1050
1051                 skb_reserve(skb, RX_PREPAD_SIZE);
1052                 skb_put(skb, framesize);
1053                 skb->protocol = eth_type_trans(skb, jme->dev);
1054
1055                 if (jme_rxsum_ok(jme, le16_to_cpu(rxdesc->descwb.flags), skb))
1056                         skb->ip_summed = CHECKSUM_UNNECESSARY;
1057                 else
1058                         skb_checksum_none_assert(skb);
1059
1060                 if (rxdesc->descwb.flags & cpu_to_le16(RXWBFLAG_TAGON)) {
1061                         if (jme->vlgrp) {
1062                                 jme->jme_vlan_rx(skb, jme->vlgrp,
1063                                         le16_to_cpu(rxdesc->descwb.vlan));
1064                                 NET_STAT(jme).rx_bytes += 4;
1065                         } else {
1066                                 dev_kfree_skb(skb);
1067                         }
1068                 } else {
1069                         jme->jme_rx(skb);
1070                 }
1071
1072                 if ((rxdesc->descwb.flags & cpu_to_le16(RXWBFLAG_DEST)) ==
1073                     cpu_to_le16(RXWBFLAG_DEST_MUL))
1074                         ++(NET_STAT(jme).multicast);
1075
1076                 NET_STAT(jme).rx_bytes += framesize;
1077                 ++(NET_STAT(jme).rx_packets);
1078         }
1079
1080         jme_set_clean_rxdesc(jme, idx);
1081
1082 }
1083
1084 static int
1085 jme_process_receive(struct jme_adapter *jme, int limit)
1086 {
1087         struct jme_ring *rxring = &(jme->rxring[0]);
1088         struct rxdesc *rxdesc = rxring->desc;
1089         int i, j, ccnt, desccnt, mask = jme->rx_ring_mask;
1090
1091         if (unlikely(!atomic_dec_and_test(&jme->rx_cleaning)))
1092                 goto out_inc;
1093
1094         if (unlikely(atomic_read(&jme->link_changing) != 1))
1095                 goto out_inc;
1096
1097         if (unlikely(!netif_carrier_ok(jme->dev)))
1098                 goto out_inc;
1099
1100         i = atomic_read(&rxring->next_to_clean);
1101         while (limit > 0) {
1102                 rxdesc = rxring->desc;
1103                 rxdesc += i;
1104
1105                 if ((rxdesc->descwb.flags & cpu_to_le16(RXWBFLAG_OWN)) ||
1106                 !(rxdesc->descwb.desccnt & RXWBDCNT_WBCPL))
1107                         goto out;
1108                 --limit;
1109
1110                 rmb();
1111                 desccnt = rxdesc->descwb.desccnt & RXWBDCNT_DCNT;
1112
1113                 if (unlikely(desccnt > 1 ||
1114                 rxdesc->descwb.errstat & RXWBERR_ALLERR)) {
1115
1116                         if (rxdesc->descwb.errstat & RXWBERR_CRCERR)
1117                                 ++(NET_STAT(jme).rx_crc_errors);
1118                         else if (rxdesc->descwb.errstat & RXWBERR_OVERUN)
1119                                 ++(NET_STAT(jme).rx_fifo_errors);
1120                         else
1121                                 ++(NET_STAT(jme).rx_errors);
1122
1123                         if (desccnt > 1)
1124                                 limit -= desccnt - 1;
1125
1126                         for (j = i, ccnt = desccnt ; ccnt-- ; ) {
1127                                 jme_set_clean_rxdesc(jme, j);
1128                                 j = (j + 1) & (mask);
1129                         }
1130
1131                 } else {
1132                         jme_alloc_and_feed_skb(jme, i);
1133                 }
1134
1135                 i = (i + desccnt) & (mask);
1136         }
1137
1138 out:
1139         atomic_set(&rxring->next_to_clean, i);
1140
1141 out_inc:
1142         atomic_inc(&jme->rx_cleaning);
1143
1144         return limit > 0 ? limit : 0;
1145
1146 }
1147
1148 static void
1149 jme_attempt_pcc(struct dynpcc_info *dpi, int atmp)
1150 {
1151         if (likely(atmp == dpi->cur)) {
1152                 dpi->cnt = 0;
1153                 return;
1154         }
1155
1156         if (dpi->attempt == atmp) {
1157                 ++(dpi->cnt);
1158         } else {
1159                 dpi->attempt = atmp;
1160                 dpi->cnt = 0;
1161         }
1162
1163 }
1164
1165 static void
1166 jme_dynamic_pcc(struct jme_adapter *jme)
1167 {
1168         register struct dynpcc_info *dpi = &(jme->dpi);
1169
1170         if ((NET_STAT(jme).rx_bytes - dpi->last_bytes) > PCC_P3_THRESHOLD)
1171                 jme_attempt_pcc(dpi, PCC_P3);
1172         else if ((NET_STAT(jme).rx_packets - dpi->last_pkts) > PCC_P2_THRESHOLD ||
1173                  dpi->intr_cnt > PCC_INTR_THRESHOLD)
1174                 jme_attempt_pcc(dpi, PCC_P2);
1175         else
1176                 jme_attempt_pcc(dpi, PCC_P1);
1177
1178         if (unlikely(dpi->attempt != dpi->cur && dpi->cnt > 5)) {
1179                 if (dpi->attempt < dpi->cur)
1180                         tasklet_schedule(&jme->rxclean_task);
1181                 jme_set_rx_pcc(jme, dpi->attempt);
1182                 dpi->cur = dpi->attempt;
1183                 dpi->cnt = 0;
1184         }
1185 }
1186
1187 static void
1188 jme_start_pcc_timer(struct jme_adapter *jme)
1189 {
1190         struct dynpcc_info *dpi = &(jme->dpi);
1191         dpi->last_bytes         = NET_STAT(jme).rx_bytes;
1192         dpi->last_pkts          = NET_STAT(jme).rx_packets;
1193         dpi->intr_cnt           = 0;
1194         jwrite32(jme, JME_TMCSR,
1195                 TMCSR_EN | ((0xFFFFFF - PCC_INTERVAL_US) & TMCSR_CNT));
1196 }
1197
1198 static inline void
1199 jme_stop_pcc_timer(struct jme_adapter *jme)
1200 {
1201         jwrite32(jme, JME_TMCSR, 0);
1202 }
1203
1204 static void
1205 jme_shutdown_nic(struct jme_adapter *jme)
1206 {
1207         u32 phylink;
1208
1209         phylink = jme_linkstat_from_phy(jme);
1210
1211         if (!(phylink & PHY_LINK_UP)) {
1212                 /*
1213                  * Disable all interrupt before issue timer
1214                  */
1215                 jme_stop_irq(jme);
1216                 jwrite32(jme, JME_TIMER2, TMCSR_EN | 0xFFFFFE);
1217         }
1218 }
1219
1220 static void
1221 jme_pcc_tasklet(unsigned long arg)
1222 {
1223         struct jme_adapter *jme = (struct jme_adapter *)arg;
1224         struct net_device *netdev = jme->dev;
1225
1226         if (unlikely(test_bit(JME_FLAG_SHUTDOWN, &jme->flags))) {
1227                 jme_shutdown_nic(jme);
1228                 return;
1229         }
1230
1231         if (unlikely(!netif_carrier_ok(netdev) ||
1232                 (atomic_read(&jme->link_changing) != 1)
1233         )) {
1234                 jme_stop_pcc_timer(jme);
1235                 return;
1236         }
1237
1238         if (!(test_bit(JME_FLAG_POLL, &jme->flags)))
1239                 jme_dynamic_pcc(jme);
1240
1241         jme_start_pcc_timer(jme);
1242 }
1243
1244 static inline void
1245 jme_polling_mode(struct jme_adapter *jme)
1246 {
1247         jme_set_rx_pcc(jme, PCC_OFF);
1248 }
1249
1250 static inline void
1251 jme_interrupt_mode(struct jme_adapter *jme)
1252 {
1253         jme_set_rx_pcc(jme, PCC_P1);
1254 }
1255
1256 static inline int
1257 jme_pseudo_hotplug_enabled(struct jme_adapter *jme)
1258 {
1259         u32 apmc;
1260         apmc = jread32(jme, JME_APMC);
1261         return apmc & JME_APMC_PSEUDO_HP_EN;
1262 }
1263
1264 static void
1265 jme_start_shutdown_timer(struct jme_adapter *jme)
1266 {
1267         u32 apmc;
1268
1269         apmc = jread32(jme, JME_APMC) | JME_APMC_PCIE_SD_EN;
1270         apmc &= ~JME_APMC_EPIEN_CTRL;
1271         if (!no_extplug) {
1272                 jwrite32f(jme, JME_APMC, apmc | JME_APMC_EPIEN_CTRL_EN);
1273                 wmb();
1274         }
1275         jwrite32f(jme, JME_APMC, apmc);
1276
1277         jwrite32f(jme, JME_TIMER2, 0);
1278         set_bit(JME_FLAG_SHUTDOWN, &jme->flags);
1279         jwrite32(jme, JME_TMCSR,
1280                 TMCSR_EN | ((0xFFFFFF - APMC_PHP_SHUTDOWN_DELAY) & TMCSR_CNT));
1281 }
1282
1283 static void
1284 jme_stop_shutdown_timer(struct jme_adapter *jme)
1285 {
1286         u32 apmc;
1287
1288         jwrite32f(jme, JME_TMCSR, 0);
1289         jwrite32f(jme, JME_TIMER2, 0);
1290         clear_bit(JME_FLAG_SHUTDOWN, &jme->flags);
1291
1292         apmc = jread32(jme, JME_APMC);
1293         apmc &= ~(JME_APMC_PCIE_SD_EN | JME_APMC_EPIEN_CTRL);
1294         jwrite32f(jme, JME_APMC, apmc | JME_APMC_EPIEN_CTRL_DIS);
1295         wmb();
1296         jwrite32f(jme, JME_APMC, apmc);
1297 }
1298
1299 static void
1300 jme_link_change_tasklet(unsigned long arg)
1301 {
1302         struct jme_adapter *jme = (struct jme_adapter *)arg;
1303         struct net_device *netdev = jme->dev;
1304         int rc;
1305
1306         while (!atomic_dec_and_test(&jme->link_changing)) {
1307                 atomic_inc(&jme->link_changing);
1308                 netif_info(jme, intr, jme->dev, "Get link change lock failed\n");
1309                 while (atomic_read(&jme->link_changing) != 1)
1310                         netif_info(jme, intr, jme->dev, "Waiting link change lock\n");
1311         }
1312
1313         if (jme_check_link(netdev, 1) && jme->old_mtu == netdev->mtu)
1314                 goto out;
1315
1316         jme->old_mtu = netdev->mtu;
1317         netif_stop_queue(netdev);
1318         if (jme_pseudo_hotplug_enabled(jme))
1319                 jme_stop_shutdown_timer(jme);
1320
1321         jme_stop_pcc_timer(jme);
1322         tasklet_disable(&jme->txclean_task);
1323         tasklet_disable(&jme->rxclean_task);
1324         tasklet_disable(&jme->rxempty_task);
1325
1326         if (netif_carrier_ok(netdev)) {
1327                 jme_disable_rx_engine(jme);
1328                 jme_disable_tx_engine(jme);
1329                 jme_reset_mac_processor(jme);
1330                 jme_free_rx_resources(jme);
1331                 jme_free_tx_resources(jme);
1332
1333                 if (test_bit(JME_FLAG_POLL, &jme->flags))
1334                         jme_polling_mode(jme);
1335
1336                 netif_carrier_off(netdev);
1337         }
1338
1339         jme_check_link(netdev, 0);
1340         if (netif_carrier_ok(netdev)) {
1341                 rc = jme_setup_rx_resources(jme);
1342                 if (rc) {
1343                         pr_err("Allocating resources for RX error, Device STOPPED!\n");
1344                         goto out_enable_tasklet;
1345                 }
1346
1347                 rc = jme_setup_tx_resources(jme);
1348                 if (rc) {
1349                         pr_err("Allocating resources for TX error, Device STOPPED!\n");
1350                         goto err_out_free_rx_resources;
1351                 }
1352
1353                 jme_enable_rx_engine(jme);
1354                 jme_enable_tx_engine(jme);
1355
1356                 netif_start_queue(netdev);
1357
1358                 if (test_bit(JME_FLAG_POLL, &jme->flags))
1359                         jme_interrupt_mode(jme);
1360
1361                 jme_start_pcc_timer(jme);
1362         } else if (jme_pseudo_hotplug_enabled(jme)) {
1363                 jme_start_shutdown_timer(jme);
1364         }
1365
1366         goto out_enable_tasklet;
1367
1368 err_out_free_rx_resources:
1369         jme_free_rx_resources(jme);
1370 out_enable_tasklet:
1371         tasklet_enable(&jme->txclean_task);
1372         tasklet_hi_enable(&jme->rxclean_task);
1373         tasklet_hi_enable(&jme->rxempty_task);
1374 out:
1375         atomic_inc(&jme->link_changing);
1376 }
1377
1378 static void
1379 jme_rx_clean_tasklet(unsigned long arg)
1380 {
1381         struct jme_adapter *jme = (struct jme_adapter *)arg;
1382         struct dynpcc_info *dpi = &(jme->dpi);
1383
1384         jme_process_receive(jme, jme->rx_ring_size);
1385         ++(dpi->intr_cnt);
1386
1387 }
1388
1389 static int
1390 jme_poll(JME_NAPI_HOLDER(holder), JME_NAPI_WEIGHT(budget))
1391 {
1392         struct jme_adapter *jme = jme_napi_priv(holder);
1393         int rest;
1394
1395         rest = jme_process_receive(jme, JME_NAPI_WEIGHT_VAL(budget));
1396
1397         while (atomic_read(&jme->rx_empty) > 0) {
1398                 atomic_dec(&jme->rx_empty);
1399                 ++(NET_STAT(jme).rx_dropped);
1400                 jme_restart_rx_engine(jme);
1401         }
1402         atomic_inc(&jme->rx_empty);
1403
1404         if (rest) {
1405                 JME_RX_COMPLETE(netdev, holder);
1406                 jme_interrupt_mode(jme);
1407         }
1408
1409         JME_NAPI_WEIGHT_SET(budget, rest);
1410         return JME_NAPI_WEIGHT_VAL(budget) - rest;
1411 }
1412
1413 static void
1414 jme_rx_empty_tasklet(unsigned long arg)
1415 {
1416         struct jme_adapter *jme = (struct jme_adapter *)arg;
1417
1418         if (unlikely(atomic_read(&jme->link_changing) != 1))
1419                 return;
1420
1421         if (unlikely(!netif_carrier_ok(jme->dev)))
1422                 return;
1423
1424         netif_info(jme, rx_status, jme->dev, "RX Queue Full!\n");
1425
1426         jme_rx_clean_tasklet(arg);
1427
1428         while (atomic_read(&jme->rx_empty) > 0) {
1429                 atomic_dec(&jme->rx_empty);
1430                 ++(NET_STAT(jme).rx_dropped);
1431                 jme_restart_rx_engine(jme);
1432         }
1433         atomic_inc(&jme->rx_empty);
1434 }
1435
1436 static void
1437 jme_wake_queue_if_stopped(struct jme_adapter *jme)
1438 {
1439         struct jme_ring *txring = &(jme->txring[0]);
1440
1441         smp_wmb();
1442         if (unlikely(netif_queue_stopped(jme->dev) &&
1443         atomic_read(&txring->nr_free) >= (jme->tx_wake_threshold))) {
1444                 netif_info(jme, tx_done, jme->dev, "TX Queue Waked\n");
1445                 netif_wake_queue(jme->dev);
1446         }
1447
1448 }
1449
1450 static void
1451 jme_tx_clean_tasklet(unsigned long arg)
1452 {
1453         struct jme_adapter *jme = (struct jme_adapter *)arg;
1454         struct jme_ring *txring = &(jme->txring[0]);
1455         struct txdesc *txdesc = txring->desc;
1456         struct jme_buffer_info *txbi = txring->bufinf, *ctxbi, *ttxbi;
1457         int i, j, cnt = 0, max, err, mask;
1458
1459         tx_dbg(jme, "Into txclean\n");
1460
1461         if (unlikely(!atomic_dec_and_test(&jme->tx_cleaning)))
1462                 goto out;
1463
1464         if (unlikely(atomic_read(&jme->link_changing) != 1))
1465                 goto out;
1466
1467         if (unlikely(!netif_carrier_ok(jme->dev)))
1468                 goto out;
1469
1470         max = jme->tx_ring_size - atomic_read(&txring->nr_free);
1471         mask = jme->tx_ring_mask;
1472
1473         for (i = atomic_read(&txring->next_to_clean) ; cnt < max ; ) {
1474
1475                 ctxbi = txbi + i;
1476
1477                 if (likely(ctxbi->skb &&
1478                 !(txdesc[i].descwb.flags & TXWBFLAG_OWN))) {
1479
1480                         tx_dbg(jme, "txclean: %d+%d@%lu\n",
1481                                i, ctxbi->nr_desc, jiffies);
1482
1483                         err = txdesc[i].descwb.flags & TXWBFLAG_ALLERR;
1484
1485                         for (j = 1 ; j < ctxbi->nr_desc ; ++j) {
1486                                 ttxbi = txbi + ((i + j) & (mask));
1487                                 txdesc[(i + j) & (mask)].dw[0] = 0;
1488
1489                                 pci_unmap_page(jme->pdev,
1490                                                  ttxbi->mapping,
1491                                                  ttxbi->len,
1492                                                  PCI_DMA_TODEVICE);
1493
1494                                 ttxbi->mapping = 0;
1495                                 ttxbi->len = 0;
1496                         }
1497
1498                         dev_kfree_skb(ctxbi->skb);
1499
1500                         cnt += ctxbi->nr_desc;
1501
1502                         if (unlikely(err)) {
1503                                 ++(NET_STAT(jme).tx_carrier_errors);
1504                         } else {
1505                                 ++(NET_STAT(jme).tx_packets);
1506                                 NET_STAT(jme).tx_bytes += ctxbi->len;
1507                         }
1508
1509                         ctxbi->skb = NULL;
1510                         ctxbi->len = 0;
1511                         ctxbi->start_xmit = 0;
1512
1513                 } else {
1514                         break;
1515                 }
1516
1517                 i = (i + ctxbi->nr_desc) & mask;
1518
1519                 ctxbi->nr_desc = 0;
1520         }
1521
1522         tx_dbg(jme, "txclean: done %d@%lu\n", i, jiffies);
1523         atomic_set(&txring->next_to_clean, i);
1524         atomic_add(cnt, &txring->nr_free);
1525
1526         jme_wake_queue_if_stopped(jme);
1527
1528 out:
1529         atomic_inc(&jme->tx_cleaning);
1530 }
1531
1532 static void
1533 jme_intr_msi(struct jme_adapter *jme, u32 intrstat)
1534 {
1535         /*
1536          * Disable interrupt
1537          */
1538         jwrite32f(jme, JME_IENC, INTR_ENABLE);
1539
1540         if (intrstat & (INTR_LINKCH | INTR_SWINTR)) {
1541                 /*
1542                  * Link change event is critical
1543                  * all other events are ignored
1544                  */
1545                 jwrite32(jme, JME_IEVE, intrstat);
1546                 tasklet_schedule(&jme->linkch_task);
1547                 goto out_reenable;
1548         }
1549
1550         if (intrstat & INTR_TMINTR) {
1551                 jwrite32(jme, JME_IEVE, INTR_TMINTR);
1552                 tasklet_schedule(&jme->pcc_task);
1553         }
1554
1555         if (intrstat & (INTR_PCCTXTO | INTR_PCCTX)) {
1556                 jwrite32(jme, JME_IEVE, INTR_PCCTXTO | INTR_PCCTX | INTR_TX0);
1557                 tasklet_schedule(&jme->txclean_task);
1558         }
1559
1560         if ((intrstat & (INTR_PCCRX0TO | INTR_PCCRX0 | INTR_RX0EMP))) {
1561                 jwrite32(jme, JME_IEVE, (intrstat & (INTR_PCCRX0TO |
1562                                                      INTR_PCCRX0 |
1563                                                      INTR_RX0EMP)) |
1564                                         INTR_RX0);
1565         }
1566
1567         if (test_bit(JME_FLAG_POLL, &jme->flags)) {
1568                 if (intrstat & INTR_RX0EMP)
1569                         atomic_inc(&jme->rx_empty);
1570
1571                 if ((intrstat & (INTR_PCCRX0TO | INTR_PCCRX0 | INTR_RX0EMP))) {
1572                         if (likely(JME_RX_SCHEDULE_PREP(jme))) {
1573                                 jme_polling_mode(jme);
1574                                 JME_RX_SCHEDULE(jme);
1575                         }
1576                 }
1577         } else {
1578                 if (intrstat & INTR_RX0EMP) {
1579                         atomic_inc(&jme->rx_empty);
1580                         tasklet_hi_schedule(&jme->rxempty_task);
1581                 } else if (intrstat & (INTR_PCCRX0TO | INTR_PCCRX0)) {
1582                         tasklet_hi_schedule(&jme->rxclean_task);
1583                 }
1584         }
1585
1586 out_reenable:
1587         /*
1588          * Re-enable interrupt
1589          */
1590         jwrite32f(jme, JME_IENS, INTR_ENABLE);
1591 }
1592
1593 static irqreturn_t
1594 jme_intr(int irq, void *dev_id)
1595 {
1596         struct net_device *netdev = dev_id;
1597         struct jme_adapter *jme = netdev_priv(netdev);
1598         u32 intrstat;
1599
1600         intrstat = jread32(jme, JME_IEVE);
1601
1602         /*
1603          * Check if it's really an interrupt for us
1604          */
1605         if (unlikely((intrstat & INTR_ENABLE) == 0))
1606                 return IRQ_NONE;
1607
1608         /*
1609          * Check if the device still exist
1610          */
1611         if (unlikely(intrstat == ~((typeof(intrstat))0)))
1612                 return IRQ_NONE;
1613
1614         jme_intr_msi(jme, intrstat);
1615
1616         return IRQ_HANDLED;
1617 }
1618
1619 static irqreturn_t
1620 jme_msi(int irq, void *dev_id)
1621 {
1622         struct net_device *netdev = dev_id;
1623         struct jme_adapter *jme = netdev_priv(netdev);
1624         u32 intrstat;
1625
1626         intrstat = jread32(jme, JME_IEVE);
1627
1628         jme_intr_msi(jme, intrstat);
1629
1630         return IRQ_HANDLED;
1631 }
1632
1633 static void
1634 jme_reset_link(struct jme_adapter *jme)
1635 {
1636         jwrite32(jme, JME_TMCSR, TMCSR_SWIT);
1637 }
1638
1639 static void
1640 jme_restart_an(struct jme_adapter *jme)
1641 {
1642         u32 bmcr;
1643
1644         spin_lock_bh(&jme->phy_lock);
1645         bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
1646         bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
1647         jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, bmcr);
1648         spin_unlock_bh(&jme->phy_lock);
1649 }
1650
1651 static int
1652 jme_request_irq(struct jme_adapter *jme)
1653 {
1654         int rc;
1655         struct net_device *netdev = jme->dev;
1656         irq_handler_t handler = jme_intr;
1657         int irq_flags = IRQF_SHARED;
1658
1659         if (!pci_enable_msi(jme->pdev)) {
1660                 set_bit(JME_FLAG_MSI, &jme->flags);
1661                 handler = jme_msi;
1662                 irq_flags = 0;
1663         }
1664
1665         rc = request_irq(jme->pdev->irq, handler, irq_flags, netdev->name,
1666                           netdev);
1667         if (rc) {
1668                 netdev_err(netdev,
1669                            "Unable to request %s interrupt (return: %d)\n",
1670                            test_bit(JME_FLAG_MSI, &jme->flags) ? "MSI" : "INTx",
1671                            rc);
1672
1673                 if (test_bit(JME_FLAG_MSI, &jme->flags)) {
1674                         pci_disable_msi(jme->pdev);
1675                         clear_bit(JME_FLAG_MSI, &jme->flags);
1676                 }
1677         } else {
1678                 netdev->irq = jme->pdev->irq;
1679         }
1680
1681         return rc;
1682 }
1683
1684 static void
1685 jme_free_irq(struct jme_adapter *jme)
1686 {
1687         free_irq(jme->pdev->irq, jme->dev);
1688         if (test_bit(JME_FLAG_MSI, &jme->flags)) {
1689                 pci_disable_msi(jme->pdev);
1690                 clear_bit(JME_FLAG_MSI, &jme->flags);
1691                 jme->dev->irq = jme->pdev->irq;
1692         }
1693 }
1694
1695 static inline void
1696 jme_new_phy_on(struct jme_adapter *jme)
1697 {
1698         u32 reg;
1699
1700         reg = jread32(jme, JME_PHY_PWR);
1701         reg &= ~(PHY_PWR_DWN1SEL | PHY_PWR_DWN1SW |
1702                  PHY_PWR_DWN2 | PHY_PWR_CLKSEL);
1703         jwrite32(jme, JME_PHY_PWR, reg);
1704
1705         pci_read_config_dword(jme->pdev, PCI_PRIV_PE1, &reg);
1706         reg &= ~PE1_GPREG0_PBG;
1707         reg |= PE1_GPREG0_ENBG;
1708         pci_write_config_dword(jme->pdev, PCI_PRIV_PE1, reg);
1709 }
1710
1711 static inline void
1712 jme_new_phy_off(struct jme_adapter *jme)
1713 {
1714         u32 reg;
1715
1716         reg = jread32(jme, JME_PHY_PWR);
1717         reg |= PHY_PWR_DWN1SEL | PHY_PWR_DWN1SW |
1718                PHY_PWR_DWN2 | PHY_PWR_CLKSEL;
1719         jwrite32(jme, JME_PHY_PWR, reg);
1720
1721         pci_read_config_dword(jme->pdev, PCI_PRIV_PE1, &reg);
1722         reg &= ~PE1_GPREG0_PBG;
1723         reg |= PE1_GPREG0_PDD3COLD;
1724         pci_write_config_dword(jme->pdev, PCI_PRIV_PE1, reg);
1725 }
1726
1727 static inline void
1728 jme_phy_on(struct jme_adapter *jme)
1729 {
1730         u32 bmcr;
1731
1732         bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
1733         bmcr &= ~BMCR_PDOWN;
1734         jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, bmcr);
1735
1736         if (new_phy_power_ctrl(jme->chip_main_rev))
1737                 jme_new_phy_on(jme);
1738 }
1739
1740 static inline void
1741 jme_phy_off(struct jme_adapter *jme)
1742 {
1743         u32 bmcr;
1744
1745         bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
1746         bmcr |= BMCR_PDOWN;
1747         jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, bmcr);
1748
1749         if (new_phy_power_ctrl(jme->chip_main_rev))
1750                 jme_new_phy_off(jme);
1751 }
1752
1753 static int
1754 jme_open(struct net_device *netdev)
1755 {
1756         struct jme_adapter *jme = netdev_priv(netdev);
1757         int rc;
1758
1759         jme_clear_pm(jme);
1760         JME_NAPI_ENABLE(jme);
1761
1762         tasklet_enable(&jme->linkch_task);
1763         tasklet_enable(&jme->txclean_task);
1764         tasklet_hi_enable(&jme->rxclean_task);
1765         tasklet_hi_enable(&jme->rxempty_task);
1766
1767         rc = jme_request_irq(jme);
1768         if (rc)
1769                 goto err_out;
1770
1771         jme_start_irq(jme);
1772
1773         jme_phy_on(jme);
1774         if (test_bit(JME_FLAG_SSET, &jme->flags))
1775                 jme_set_settings(netdev, &jme->old_ecmd);
1776         else
1777                 jme_reset_phy_processor(jme);
1778
1779         jme_reset_link(jme);
1780
1781         return 0;
1782
1783 err_out:
1784         netif_stop_queue(netdev);
1785         netif_carrier_off(netdev);
1786         return rc;
1787 }
1788
1789 static void
1790 jme_set_100m_half(struct jme_adapter *jme)
1791 {
1792         u32 bmcr, tmp;
1793
1794         jme_phy_on(jme);
1795         bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
1796         tmp = bmcr & ~(BMCR_ANENABLE | BMCR_SPEED100 |
1797                        BMCR_SPEED1000 | BMCR_FULLDPLX);
1798         tmp |= BMCR_SPEED100;
1799
1800         if (bmcr != tmp)
1801                 jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, tmp);
1802
1803         if (jme->fpgaver)
1804                 jwrite32(jme, JME_GHC, GHC_SPEED_100M | GHC_LINK_POLL);
1805         else
1806                 jwrite32(jme, JME_GHC, GHC_SPEED_100M);
1807 }
1808
1809 #define JME_WAIT_LINK_TIME 2000 /* 2000ms */
1810 static void
1811 jme_wait_link(struct jme_adapter *jme)
1812 {
1813         u32 phylink, to = JME_WAIT_LINK_TIME;
1814
1815         mdelay(1000);
1816         phylink = jme_linkstat_from_phy(jme);
1817         while (!(phylink & PHY_LINK_UP) && (to -= 10) > 0) {
1818                 mdelay(10);
1819                 phylink = jme_linkstat_from_phy(jme);
1820         }
1821 }
1822
1823 static void
1824 jme_powersave_phy(struct jme_adapter *jme)
1825 {
1826         if (jme->reg_pmcs) {
1827                 jme_set_100m_half(jme);
1828
1829                 if (jme->reg_pmcs & (PMCS_LFEN | PMCS_LREN))
1830                         jme_wait_link(jme);
1831
1832                 jwrite32(jme, JME_PMCS, jme->reg_pmcs);
1833         } else {
1834                 jme_phy_off(jme);
1835         }
1836 }
1837
1838 static int
1839 jme_close(struct net_device *netdev)
1840 {
1841         struct jme_adapter *jme = netdev_priv(netdev);
1842
1843         netif_stop_queue(netdev);
1844         netif_carrier_off(netdev);
1845
1846         jme_stop_irq(jme);
1847         jme_free_irq(jme);
1848
1849         JME_NAPI_DISABLE(jme);
1850
1851         tasklet_disable(&jme->linkch_task);
1852         tasklet_disable(&jme->txclean_task);
1853         tasklet_disable(&jme->rxclean_task);
1854         tasklet_disable(&jme->rxempty_task);
1855
1856         jme_disable_rx_engine(jme);
1857         jme_disable_tx_engine(jme);
1858         jme_reset_mac_processor(jme);
1859         jme_free_rx_resources(jme);
1860         jme_free_tx_resources(jme);
1861         jme->phylink = 0;
1862         jme_phy_off(jme);
1863
1864         return 0;
1865 }
1866
1867 static int
1868 jme_alloc_txdesc(struct jme_adapter *jme,
1869                         struct sk_buff *skb)
1870 {
1871         struct jme_ring *txring = &(jme->txring[0]);
1872         int idx, nr_alloc, mask = jme->tx_ring_mask;
1873
1874         idx = txring->next_to_use;
1875         nr_alloc = skb_shinfo(skb)->nr_frags + 2;
1876
1877         if (unlikely(atomic_read(&txring->nr_free) < nr_alloc))
1878                 return -1;
1879
1880         atomic_sub(nr_alloc, &txring->nr_free);
1881
1882         txring->next_to_use = (txring->next_to_use + nr_alloc) & mask;
1883
1884         return idx;
1885 }
1886
1887 static void
1888 jme_fill_tx_map(struct pci_dev *pdev,
1889                 struct txdesc *txdesc,
1890                 struct jme_buffer_info *txbi,
1891                 struct page *page,
1892                 u32 page_offset,
1893                 u32 len,
1894                 u8 hidma)
1895 {
1896         dma_addr_t dmaaddr;
1897
1898         dmaaddr = pci_map_page(pdev,
1899                                 page,
1900                                 page_offset,
1901                                 len,
1902                                 PCI_DMA_TODEVICE);
1903
1904         pci_dma_sync_single_for_device(pdev,
1905                                        dmaaddr,
1906                                        len,
1907                                        PCI_DMA_TODEVICE);
1908
1909         txdesc->dw[0] = 0;
1910         txdesc->dw[1] = 0;
1911         txdesc->desc2.flags     = TXFLAG_OWN;
1912         txdesc->desc2.flags     |= (hidma) ? TXFLAG_64BIT : 0;
1913         txdesc->desc2.datalen   = cpu_to_le16(len);
1914         txdesc->desc2.bufaddrh  = cpu_to_le32((__u64)dmaaddr >> 32);
1915         txdesc->desc2.bufaddrl  = cpu_to_le32(
1916                                         (__u64)dmaaddr & 0xFFFFFFFFUL);
1917
1918         txbi->mapping = dmaaddr;
1919         txbi->len = len;
1920 }
1921
1922 static void
1923 jme_map_tx_skb(struct jme_adapter *jme, struct sk_buff *skb, int idx)
1924 {
1925         struct jme_ring *txring = &(jme->txring[0]);
1926         struct txdesc *txdesc = txring->desc, *ctxdesc;
1927         struct jme_buffer_info *txbi = txring->bufinf, *ctxbi;
1928         u8 hidma = jme->dev->features & NETIF_F_HIGHDMA;
1929         int i, nr_frags = skb_shinfo(skb)->nr_frags;
1930         int mask = jme->tx_ring_mask;
1931         struct skb_frag_struct *frag;
1932         u32 len;
1933
1934         for (i = 0 ; i < nr_frags ; ++i) {
1935                 frag = &skb_shinfo(skb)->frags[i];
1936                 ctxdesc = txdesc + ((idx + i + 2) & (mask));
1937                 ctxbi = txbi + ((idx + i + 2) & (mask));
1938
1939                 jme_fill_tx_map(jme->pdev, ctxdesc, ctxbi, frag->page,
1940                                  frag->page_offset, frag->size, hidma);
1941         }
1942
1943         len = skb_is_nonlinear(skb) ? skb_headlen(skb) : skb->len;
1944         ctxdesc = txdesc + ((idx + 1) & (mask));
1945         ctxbi = txbi + ((idx + 1) & (mask));
1946         jme_fill_tx_map(jme->pdev, ctxdesc, ctxbi, virt_to_page(skb->data),
1947                         offset_in_page(skb->data), len, hidma);
1948
1949 }
1950
1951 static int
1952 jme_expand_header(struct jme_adapter *jme, struct sk_buff *skb)
1953 {
1954         if (unlikely(skb_shinfo(skb)->gso_size &&
1955                         skb_header_cloned(skb) &&
1956                         pskb_expand_head(skb, 0, 0, GFP_ATOMIC))) {
1957                 dev_kfree_skb(skb);
1958                 return -1;
1959         }
1960
1961         return 0;
1962 }
1963
1964 static int
1965 jme_tx_tso(struct sk_buff *skb, __le16 *mss, u8 *flags)
1966 {
1967         *mss = cpu_to_le16(skb_shinfo(skb)->gso_size << TXDESC_MSS_SHIFT);
1968         if (*mss) {
1969                 *flags |= TXFLAG_LSEN;
1970
1971                 if (skb->protocol == htons(ETH_P_IP)) {
1972                         struct iphdr *iph = ip_hdr(skb);
1973
1974                         iph->check = 0;
1975                         tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
1976                                                                 iph->daddr, 0,
1977                                                                 IPPROTO_TCP,
1978                                                                 0);
1979                 } else {
1980                         struct ipv6hdr *ip6h = ipv6_hdr(skb);
1981
1982                         tcp_hdr(skb)->check = ~csum_ipv6_magic(&ip6h->saddr,
1983                                                                 &ip6h->daddr, 0,
1984                                                                 IPPROTO_TCP,
1985                                                                 0);
1986                 }
1987
1988                 return 0;
1989         }
1990
1991         return 1;
1992 }
1993
1994 static void
1995 jme_tx_csum(struct jme_adapter *jme, struct sk_buff *skb, u8 *flags)
1996 {
1997         if (skb->ip_summed == CHECKSUM_PARTIAL) {
1998                 u8 ip_proto;
1999
2000                 switch (skb->protocol) {
2001                 case htons(ETH_P_IP):
2002                         ip_proto = ip_hdr(skb)->protocol;
2003                         break;
2004                 case htons(ETH_P_IPV6):
2005                         ip_proto = ipv6_hdr(skb)->nexthdr;
2006                         break;
2007                 default:
2008                         ip_proto = 0;
2009                         break;
2010                 }
2011
2012                 switch (ip_proto) {
2013                 case IPPROTO_TCP:
2014                         *flags |= TXFLAG_TCPCS;
2015                         break;
2016                 case IPPROTO_UDP:
2017                         *flags |= TXFLAG_UDPCS;
2018                         break;
2019                 default:
2020                         netif_err(jme, tx_err, jme->dev, "Error upper layer protocol\n");
2021                         break;
2022                 }
2023         }
2024 }
2025
2026 static inline void
2027 jme_tx_vlan(struct sk_buff *skb, __le16 *vlan, u8 *flags)
2028 {
2029         if (vlan_tx_tag_present(skb)) {
2030                 *flags |= TXFLAG_TAGON;
2031                 *vlan = cpu_to_le16(vlan_tx_tag_get(skb));
2032         }
2033 }
2034
2035 static int
2036 jme_fill_tx_desc(struct jme_adapter *jme, struct sk_buff *skb, int idx)
2037 {
2038         struct jme_ring *txring = &(jme->txring[0]);
2039         struct txdesc *txdesc;
2040         struct jme_buffer_info *txbi;
2041         u8 flags;
2042
2043         txdesc = (struct txdesc *)txring->desc + idx;
2044         txbi = txring->bufinf + idx;
2045
2046         txdesc->dw[0] = 0;
2047         txdesc->dw[1] = 0;
2048         txdesc->dw[2] = 0;
2049         txdesc->dw[3] = 0;
2050         txdesc->desc1.pktsize = cpu_to_le16(skb->len);
2051         /*
2052          * Set OWN bit at final.
2053          * When kernel transmit faster than NIC.
2054          * And NIC trying to send this descriptor before we tell
2055          * it to start sending this TX queue.
2056          * Other fields are already filled correctly.
2057          */
2058         wmb();
2059         flags = TXFLAG_OWN | TXFLAG_INT;
2060         /*
2061          * Set checksum flags while not tso
2062          */
2063         if (jme_tx_tso(skb, &txdesc->desc1.mss, &flags))
2064                 jme_tx_csum(jme, skb, &flags);
2065         jme_tx_vlan(skb, &txdesc->desc1.vlan, &flags);
2066         jme_map_tx_skb(jme, skb, idx);
2067         txdesc->desc1.flags = flags;
2068         /*
2069          * Set tx buffer info after telling NIC to send
2070          * For better tx_clean timing
2071          */
2072         wmb();
2073         txbi->nr_desc = skb_shinfo(skb)->nr_frags + 2;
2074         txbi->skb = skb;
2075         txbi->len = skb->len;
2076         txbi->start_xmit = jiffies;
2077         if (!txbi->start_xmit)
2078                 txbi->start_xmit = (0UL-1);
2079
2080         return 0;
2081 }
2082
2083 static void
2084 jme_stop_queue_if_full(struct jme_adapter *jme)
2085 {
2086         struct jme_ring *txring = &(jme->txring[0]);
2087         struct jme_buffer_info *txbi = txring->bufinf;
2088         int idx = atomic_read(&txring->next_to_clean);
2089
2090         txbi += idx;
2091
2092         smp_wmb();
2093         if (unlikely(atomic_read(&txring->nr_free) < (MAX_SKB_FRAGS+2))) {
2094                 netif_stop_queue(jme->dev);
2095                 netif_info(jme, tx_queued, jme->dev, "TX Queue Paused\n");
2096                 smp_wmb();
2097                 if (atomic_read(&txring->nr_free)
2098                         >= (jme->tx_wake_threshold)) {
2099                         netif_wake_queue(jme->dev);
2100                         netif_info(jme, tx_queued, jme->dev, "TX Queue Fast Waked\n");
2101                 }
2102         }
2103
2104         if (unlikely(txbi->start_xmit &&
2105                         (jiffies - txbi->start_xmit) >= TX_TIMEOUT &&
2106                         txbi->skb)) {
2107                 netif_stop_queue(jme->dev);
2108                 netif_info(jme, tx_queued, jme->dev,
2109                            "TX Queue Stopped %d@%lu\n", idx, jiffies);
2110         }
2111 }
2112
2113 /*
2114  * This function is already protected by netif_tx_lock()
2115  */
2116
2117 static netdev_tx_t
2118 jme_start_xmit(struct sk_buff *skb, struct net_device *netdev)
2119 {
2120         struct jme_adapter *jme = netdev_priv(netdev);
2121         int idx;
2122
2123         if (unlikely(jme_expand_header(jme, skb))) {
2124                 ++(NET_STAT(jme).tx_dropped);
2125                 return NETDEV_TX_OK;
2126         }
2127
2128         idx = jme_alloc_txdesc(jme, skb);
2129
2130         if (unlikely(idx < 0)) {
2131                 netif_stop_queue(netdev);
2132                 netif_err(jme, tx_err, jme->dev,
2133                           "BUG! Tx ring full when queue awake!\n");
2134
2135                 return NETDEV_TX_BUSY;
2136         }
2137
2138         jme_fill_tx_desc(jme, skb, idx);
2139
2140         jwrite32(jme, JME_TXCS, jme->reg_txcs |
2141                                 TXCS_SELECT_QUEUE0 |
2142                                 TXCS_QUEUE0S |
2143                                 TXCS_ENABLE);
2144
2145         tx_dbg(jme, "xmit: %d+%d@%lu\n",
2146                idx, skb_shinfo(skb)->nr_frags + 2, jiffies);
2147         jme_stop_queue_if_full(jme);
2148
2149         return NETDEV_TX_OK;
2150 }
2151
2152 static void
2153 jme_set_unicastaddr(struct net_device *netdev)
2154 {
2155         struct jme_adapter *jme = netdev_priv(netdev);
2156         u32 val;
2157
2158         val = (netdev->dev_addr[3] & 0xff) << 24 |
2159               (netdev->dev_addr[2] & 0xff) << 16 |
2160               (netdev->dev_addr[1] & 0xff) <<  8 |
2161               (netdev->dev_addr[0] & 0xff);
2162         jwrite32(jme, JME_RXUMA_LO, val);
2163         val = (netdev->dev_addr[5] & 0xff) << 8 |
2164               (netdev->dev_addr[4] & 0xff);
2165         jwrite32(jme, JME_RXUMA_HI, val);
2166 }
2167
2168 static int
2169 jme_set_macaddr(struct net_device *netdev, void *p)
2170 {
2171         struct jme_adapter *jme = netdev_priv(netdev);
2172         struct sockaddr *addr = p;
2173
2174         if (netif_running(netdev))
2175                 return -EBUSY;
2176
2177         spin_lock_bh(&jme->macaddr_lock);
2178         memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
2179         jme_set_unicastaddr(netdev);
2180         spin_unlock_bh(&jme->macaddr_lock);
2181
2182         return 0;
2183 }
2184
2185 static void
2186 jme_set_multi(struct net_device *netdev)
2187 {
2188         struct jme_adapter *jme = netdev_priv(netdev);
2189         u32 mc_hash[2] = {};
2190
2191         spin_lock_bh(&jme->rxmcs_lock);
2192
2193         jme->reg_rxmcs |= RXMCS_BRDFRAME | RXMCS_UNIFRAME;
2194
2195         if (netdev->flags & IFF_PROMISC) {
2196                 jme->reg_rxmcs |= RXMCS_ALLFRAME;
2197         } else if (netdev->flags & IFF_ALLMULTI) {
2198                 jme->reg_rxmcs |= RXMCS_ALLMULFRAME;
2199         } else if (netdev->flags & IFF_MULTICAST) {
2200                 struct netdev_hw_addr *ha;
2201                 int bit_nr;
2202
2203                 jme->reg_rxmcs |= RXMCS_MULFRAME | RXMCS_MULFILTERED;
2204                 netdev_for_each_mc_addr(ha, netdev) {
2205                         bit_nr = ether_crc(ETH_ALEN, ha->addr) & 0x3F;
2206                         mc_hash[bit_nr >> 5] |= 1 << (bit_nr & 0x1F);
2207                 }
2208
2209                 jwrite32(jme, JME_RXMCHT_LO, mc_hash[0]);
2210                 jwrite32(jme, JME_RXMCHT_HI, mc_hash[1]);
2211         }
2212
2213         wmb();
2214         jwrite32(jme, JME_RXMCS, jme->reg_rxmcs);
2215
2216         spin_unlock_bh(&jme->rxmcs_lock);
2217 }
2218
2219 static int
2220 jme_change_mtu(struct net_device *netdev, int new_mtu)
2221 {
2222         struct jme_adapter *jme = netdev_priv(netdev);
2223
2224         if (new_mtu == jme->old_mtu)
2225                 return 0;
2226
2227         if (((new_mtu + ETH_HLEN) > MAX_ETHERNET_JUMBO_PACKET_SIZE) ||
2228                 ((new_mtu) < IPV6_MIN_MTU))
2229                 return -EINVAL;
2230
2231
2232         netdev->mtu = new_mtu;
2233         netdev_update_features(netdev);
2234
2235         jme_restart_rx_engine(jme);
2236         jme_reset_link(jme);
2237
2238         return 0;
2239 }
2240
2241 static void
2242 jme_tx_timeout(struct net_device *netdev)
2243 {
2244         struct jme_adapter *jme = netdev_priv(netdev);
2245
2246         jme->phylink = 0;
2247         jme_reset_phy_processor(jme);
2248         if (test_bit(JME_FLAG_SSET, &jme->flags))
2249                 jme_set_settings(netdev, &jme->old_ecmd);
2250
2251         /*
2252          * Force to Reset the link again
2253          */
2254         jme_reset_link(jme);
2255 }
2256
2257 static inline void jme_pause_rx(struct jme_adapter *jme)
2258 {
2259         atomic_dec(&jme->link_changing);
2260
2261         jme_set_rx_pcc(jme, PCC_OFF);
2262         if (test_bit(JME_FLAG_POLL, &jme->flags)) {
2263                 JME_NAPI_DISABLE(jme);
2264         } else {
2265                 tasklet_disable(&jme->rxclean_task);
2266                 tasklet_disable(&jme->rxempty_task);
2267         }
2268 }
2269
2270 static inline void jme_resume_rx(struct jme_adapter *jme)
2271 {
2272         struct dynpcc_info *dpi = &(jme->dpi);
2273
2274         if (test_bit(JME_FLAG_POLL, &jme->flags)) {
2275                 JME_NAPI_ENABLE(jme);
2276         } else {
2277                 tasklet_hi_enable(&jme->rxclean_task);
2278                 tasklet_hi_enable(&jme->rxempty_task);
2279         }
2280         dpi->cur                = PCC_P1;
2281         dpi->attempt            = PCC_P1;
2282         dpi->cnt                = 0;
2283         jme_set_rx_pcc(jme, PCC_P1);
2284
2285         atomic_inc(&jme->link_changing);
2286 }
2287
2288 static void
2289 jme_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp)
2290 {
2291         struct jme_adapter *jme = netdev_priv(netdev);
2292
2293         jme_pause_rx(jme);
2294         jme->vlgrp = grp;
2295         jme_resume_rx(jme);
2296 }
2297
2298 static void
2299 jme_get_drvinfo(struct net_device *netdev,
2300                      struct ethtool_drvinfo *info)
2301 {
2302         struct jme_adapter *jme = netdev_priv(netdev);
2303
2304         strcpy(info->driver, DRV_NAME);
2305         strcpy(info->version, DRV_VERSION);
2306         strcpy(info->bus_info, pci_name(jme->pdev));
2307 }
2308
2309 static int
2310 jme_get_regs_len(struct net_device *netdev)
2311 {
2312         return JME_REG_LEN;
2313 }
2314
2315 static void
2316 mmapio_memcpy(struct jme_adapter *jme, u32 *p, u32 reg, int len)
2317 {
2318         int i;
2319
2320         for (i = 0 ; i < len ; i += 4)
2321                 p[i >> 2] = jread32(jme, reg + i);
2322 }
2323
2324 static void
2325 mdio_memcpy(struct jme_adapter *jme, u32 *p, int reg_nr)
2326 {
2327         int i;
2328         u16 *p16 = (u16 *)p;
2329
2330         for (i = 0 ; i < reg_nr ; ++i)
2331                 p16[i] = jme_mdio_read(jme->dev, jme->mii_if.phy_id, i);
2332 }
2333
2334 static void
2335 jme_get_regs(struct net_device *netdev, struct ethtool_regs *regs, void *p)
2336 {
2337         struct jme_adapter *jme = netdev_priv(netdev);
2338         u32 *p32 = (u32 *)p;
2339
2340         memset(p, 0xFF, JME_REG_LEN);
2341
2342         regs->version = 1;
2343         mmapio_memcpy(jme, p32, JME_MAC, JME_MAC_LEN);
2344
2345         p32 += 0x100 >> 2;
2346         mmapio_memcpy(jme, p32, JME_PHY, JME_PHY_LEN);
2347
2348         p32 += 0x100 >> 2;
2349         mmapio_memcpy(jme, p32, JME_MISC, JME_MISC_LEN);
2350
2351         p32 += 0x100 >> 2;
2352         mmapio_memcpy(jme, p32, JME_RSS, JME_RSS_LEN);
2353
2354         p32 += 0x100 >> 2;
2355         mdio_memcpy(jme, p32, JME_PHY_REG_NR);
2356 }
2357
2358 static int
2359 jme_get_coalesce(struct net_device *netdev, struct ethtool_coalesce *ecmd)
2360 {
2361         struct jme_adapter *jme = netdev_priv(netdev);
2362
2363         ecmd->tx_coalesce_usecs = PCC_TX_TO;
2364         ecmd->tx_max_coalesced_frames = PCC_TX_CNT;
2365
2366         if (test_bit(JME_FLAG_POLL, &jme->flags)) {
2367                 ecmd->use_adaptive_rx_coalesce = false;
2368                 ecmd->rx_coalesce_usecs = 0;
2369                 ecmd->rx_max_coalesced_frames = 0;
2370                 return 0;
2371         }
2372
2373         ecmd->use_adaptive_rx_coalesce = true;
2374
2375         switch (jme->dpi.cur) {
2376         case PCC_P1:
2377                 ecmd->rx_coalesce_usecs = PCC_P1_TO;
2378                 ecmd->rx_max_coalesced_frames = PCC_P1_CNT;
2379                 break;
2380         case PCC_P2:
2381                 ecmd->rx_coalesce_usecs = PCC_P2_TO;
2382                 ecmd->rx_max_coalesced_frames = PCC_P2_CNT;
2383                 break;
2384         case PCC_P3:
2385                 ecmd->rx_coalesce_usecs = PCC_P3_TO;
2386                 ecmd->rx_max_coalesced_frames = PCC_P3_CNT;
2387                 break;
2388         default:
2389                 break;
2390         }
2391
2392         return 0;
2393 }
2394
2395 static int
2396 jme_set_coalesce(struct net_device *netdev, struct ethtool_coalesce *ecmd)
2397 {
2398         struct jme_adapter *jme = netdev_priv(netdev);
2399         struct dynpcc_info *dpi = &(jme->dpi);
2400
2401         if (netif_running(netdev))
2402                 return -EBUSY;
2403
2404         if (ecmd->use_adaptive_rx_coalesce &&
2405             test_bit(JME_FLAG_POLL, &jme->flags)) {
2406                 clear_bit(JME_FLAG_POLL, &jme->flags);
2407                 jme->jme_rx = netif_rx;
2408                 jme->jme_vlan_rx = vlan_hwaccel_rx;
2409                 dpi->cur                = PCC_P1;
2410                 dpi->attempt            = PCC_P1;
2411                 dpi->cnt                = 0;
2412                 jme_set_rx_pcc(jme, PCC_P1);
2413                 jme_interrupt_mode(jme);
2414         } else if (!(ecmd->use_adaptive_rx_coalesce) &&
2415                    !(test_bit(JME_FLAG_POLL, &jme->flags))) {
2416                 set_bit(JME_FLAG_POLL, &jme->flags);
2417                 jme->jme_rx = netif_receive_skb;
2418                 jme->jme_vlan_rx = vlan_hwaccel_receive_skb;
2419                 jme_interrupt_mode(jme);
2420         }
2421
2422         return 0;
2423 }
2424
2425 static void
2426 jme_get_pauseparam(struct net_device *netdev,
2427                         struct ethtool_pauseparam *ecmd)
2428 {
2429         struct jme_adapter *jme = netdev_priv(netdev);
2430         u32 val;
2431
2432         ecmd->tx_pause = (jme->reg_txpfc & TXPFC_PF_EN) != 0;
2433         ecmd->rx_pause = (jme->reg_rxmcs & RXMCS_FLOWCTRL) != 0;
2434
2435         spin_lock_bh(&jme->phy_lock);
2436         val = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_ADVERTISE);
2437         spin_unlock_bh(&jme->phy_lock);
2438
2439         ecmd->autoneg =
2440                 (val & (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM)) != 0;
2441 }
2442
2443 static int
2444 jme_set_pauseparam(struct net_device *netdev,
2445                         struct ethtool_pauseparam *ecmd)
2446 {
2447         struct jme_adapter *jme = netdev_priv(netdev);
2448         u32 val;
2449
2450         if (((jme->reg_txpfc & TXPFC_PF_EN) != 0) ^
2451                 (ecmd->tx_pause != 0)) {
2452
2453                 if (ecmd->tx_pause)
2454                         jme->reg_txpfc |= TXPFC_PF_EN;
2455                 else
2456                         jme->reg_txpfc &= ~TXPFC_PF_EN;
2457
2458                 jwrite32(jme, JME_TXPFC, jme->reg_txpfc);
2459         }
2460
2461         spin_lock_bh(&jme->rxmcs_lock);
2462         if (((jme->reg_rxmcs & RXMCS_FLOWCTRL) != 0) ^
2463                 (ecmd->rx_pause != 0)) {
2464
2465                 if (ecmd->rx_pause)
2466                         jme->reg_rxmcs |= RXMCS_FLOWCTRL;
2467                 else
2468                         jme->reg_rxmcs &= ~RXMCS_FLOWCTRL;
2469
2470                 jwrite32(jme, JME_RXMCS, jme->reg_rxmcs);
2471         }
2472         spin_unlock_bh(&jme->rxmcs_lock);
2473
2474         spin_lock_bh(&jme->phy_lock);
2475         val = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_ADVERTISE);
2476         if (((val & (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM)) != 0) ^
2477                 (ecmd->autoneg != 0)) {
2478
2479                 if (ecmd->autoneg)
2480                         val |= (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
2481                 else
2482                         val &= ~(ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
2483
2484                 jme_mdio_write(jme->dev, jme->mii_if.phy_id,
2485                                 MII_ADVERTISE, val);
2486         }
2487         spin_unlock_bh(&jme->phy_lock);
2488
2489         return 0;
2490 }
2491
2492 static void
2493 jme_get_wol(struct net_device *netdev,
2494                 struct ethtool_wolinfo *wol)
2495 {
2496         struct jme_adapter *jme = netdev_priv(netdev);
2497
2498         wol->supported = WAKE_MAGIC | WAKE_PHY;
2499
2500         wol->wolopts = 0;
2501
2502         if (jme->reg_pmcs & (PMCS_LFEN | PMCS_LREN))
2503                 wol->wolopts |= WAKE_PHY;
2504
2505         if (jme->reg_pmcs & PMCS_MFEN)
2506                 wol->wolopts |= WAKE_MAGIC;
2507
2508 }
2509
2510 static int
2511 jme_set_wol(struct net_device *netdev,
2512                 struct ethtool_wolinfo *wol)
2513 {
2514         struct jme_adapter *jme = netdev_priv(netdev);
2515
2516         if (wol->wolopts & (WAKE_MAGICSECURE |
2517                                 WAKE_UCAST |
2518                                 WAKE_MCAST |
2519                                 WAKE_BCAST |
2520                                 WAKE_ARP))
2521                 return -EOPNOTSUPP;
2522
2523         jme->reg_pmcs = 0;
2524
2525         if (wol->wolopts & WAKE_PHY)
2526                 jme->reg_pmcs |= PMCS_LFEN | PMCS_LREN;
2527
2528         if (wol->wolopts & WAKE_MAGIC)
2529                 jme->reg_pmcs |= PMCS_MFEN;
2530
2531         jwrite32(jme, JME_PMCS, jme->reg_pmcs);
2532
2533         device_set_wakeup_enable(&jme->pdev->dev, jme->reg_pmcs);
2534
2535         return 0;
2536 }
2537
2538 static int
2539 jme_get_settings(struct net_device *netdev,
2540                      struct ethtool_cmd *ecmd)
2541 {
2542         struct jme_adapter *jme = netdev_priv(netdev);
2543         int rc;
2544
2545         spin_lock_bh(&jme->phy_lock);
2546         rc = mii_ethtool_gset(&(jme->mii_if), ecmd);
2547         spin_unlock_bh(&jme->phy_lock);
2548         return rc;
2549 }
2550
2551 static int
2552 jme_set_settings(struct net_device *netdev,
2553                      struct ethtool_cmd *ecmd)
2554 {
2555         struct jme_adapter *jme = netdev_priv(netdev);
2556         int rc, fdc = 0;
2557
2558         if (ethtool_cmd_speed(ecmd) == SPEED_1000
2559             && ecmd->autoneg != AUTONEG_ENABLE)
2560                 return -EINVAL;
2561
2562         /*
2563          * Check If user changed duplex only while force_media.
2564          * Hardware would not generate link change interrupt.
2565          */
2566         if (jme->mii_if.force_media &&
2567         ecmd->autoneg != AUTONEG_ENABLE &&
2568         (jme->mii_if.full_duplex != ecmd->duplex))
2569                 fdc = 1;
2570
2571         spin_lock_bh(&jme->phy_lock);
2572         rc = mii_ethtool_sset(&(jme->mii_if), ecmd);
2573         spin_unlock_bh(&jme->phy_lock);
2574
2575         if (!rc) {
2576                 if (fdc)
2577                         jme_reset_link(jme);
2578                 jme->old_ecmd = *ecmd;
2579                 set_bit(JME_FLAG_SSET, &jme->flags);
2580         }
2581
2582         return rc;
2583 }
2584
2585 static int
2586 jme_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd)
2587 {
2588         int rc;
2589         struct jme_adapter *jme = netdev_priv(netdev);
2590         struct mii_ioctl_data *mii_data = if_mii(rq);
2591         unsigned int duplex_chg;
2592
2593         if (cmd == SIOCSMIIREG) {
2594                 u16 val = mii_data->val_in;
2595                 if (!(val & (BMCR_RESET|BMCR_ANENABLE)) &&
2596                     (val & BMCR_SPEED1000))
2597                         return -EINVAL;
2598         }
2599
2600         spin_lock_bh(&jme->phy_lock);
2601         rc = generic_mii_ioctl(&jme->mii_if, mii_data, cmd, &duplex_chg);
2602         spin_unlock_bh(&jme->phy_lock);
2603
2604         if (!rc && (cmd == SIOCSMIIREG)) {
2605                 if (duplex_chg)
2606                         jme_reset_link(jme);
2607                 jme_get_settings(netdev, &jme->old_ecmd);
2608                 set_bit(JME_FLAG_SSET, &jme->flags);
2609         }
2610
2611         return rc;
2612 }
2613
2614 static u32
2615 jme_get_link(struct net_device *netdev)
2616 {
2617         struct jme_adapter *jme = netdev_priv(netdev);
2618         return jread32(jme, JME_PHY_LINK) & PHY_LINK_UP;
2619 }
2620
2621 static u32
2622 jme_get_msglevel(struct net_device *netdev)
2623 {
2624         struct jme_adapter *jme = netdev_priv(netdev);
2625         return jme->msg_enable;
2626 }
2627
2628 static void
2629 jme_set_msglevel(struct net_device *netdev, u32 value)
2630 {
2631         struct jme_adapter *jme = netdev_priv(netdev);
2632         jme->msg_enable = value;
2633 }
2634
2635 static u32
2636 jme_fix_features(struct net_device *netdev, u32 features)
2637 {
2638         if (netdev->mtu > 1900)
2639                 features &= ~(NETIF_F_ALL_TSO | NETIF_F_ALL_CSUM);
2640         return features;
2641 }
2642
2643 static int
2644 jme_set_features(struct net_device *netdev, u32 features)
2645 {
2646         struct jme_adapter *jme = netdev_priv(netdev);
2647
2648         spin_lock_bh(&jme->rxmcs_lock);
2649         if (features & NETIF_F_RXCSUM)
2650                 jme->reg_rxmcs |= RXMCS_CHECKSUM;
2651         else
2652                 jme->reg_rxmcs &= ~RXMCS_CHECKSUM;
2653         jwrite32(jme, JME_RXMCS, jme->reg_rxmcs);
2654         spin_unlock_bh(&jme->rxmcs_lock);
2655
2656         return 0;
2657 }
2658
2659 static int
2660 jme_nway_reset(struct net_device *netdev)
2661 {
2662         struct jme_adapter *jme = netdev_priv(netdev);
2663         jme_restart_an(jme);
2664         return 0;
2665 }
2666
2667 static u8
2668 jme_smb_read(struct jme_adapter *jme, unsigned int addr)
2669 {
2670         u32 val;
2671         int to;
2672
2673         val = jread32(jme, JME_SMBCSR);
2674         to = JME_SMB_BUSY_TIMEOUT;
2675         while ((val & SMBCSR_BUSY) && --to) {
2676                 msleep(1);
2677                 val = jread32(jme, JME_SMBCSR);
2678         }
2679         if (!to) {
2680                 netif_err(jme, hw, jme->dev, "SMB Bus Busy\n");
2681                 return 0xFF;
2682         }
2683
2684         jwrite32(jme, JME_SMBINTF,
2685                 ((addr << SMBINTF_HWADDR_SHIFT) & SMBINTF_HWADDR) |
2686                 SMBINTF_HWRWN_READ |
2687                 SMBINTF_HWCMD);
2688
2689         val = jread32(jme, JME_SMBINTF);
2690         to = JME_SMB_BUSY_TIMEOUT;
2691         while ((val & SMBINTF_HWCMD) && --to) {
2692                 msleep(1);
2693                 val = jread32(jme, JME_SMBINTF);
2694         }
2695         if (!to) {
2696                 netif_err(jme, hw, jme->dev, "SMB Bus Busy\n");
2697                 return 0xFF;
2698         }
2699
2700         return (val & SMBINTF_HWDATR) >> SMBINTF_HWDATR_SHIFT;
2701 }
2702
2703 static void
2704 jme_smb_write(struct jme_adapter *jme, unsigned int addr, u8 data)
2705 {
2706         u32 val;
2707         int to;
2708
2709         val = jread32(jme, JME_SMBCSR);
2710         to = JME_SMB_BUSY_TIMEOUT;
2711         while ((val & SMBCSR_BUSY) && --to) {
2712                 msleep(1);
2713                 val = jread32(jme, JME_SMBCSR);
2714         }
2715         if (!to) {
2716                 netif_err(jme, hw, jme->dev, "SMB Bus Busy\n");
2717                 return;
2718         }
2719
2720         jwrite32(jme, JME_SMBINTF,
2721                 ((data << SMBINTF_HWDATW_SHIFT) & SMBINTF_HWDATW) |
2722                 ((addr << SMBINTF_HWADDR_SHIFT) & SMBINTF_HWADDR) |
2723                 SMBINTF_HWRWN_WRITE |
2724                 SMBINTF_HWCMD);
2725
2726         val = jread32(jme, JME_SMBINTF);
2727         to = JME_SMB_BUSY_TIMEOUT;
2728         while ((val & SMBINTF_HWCMD) && --to) {
2729                 msleep(1);
2730                 val = jread32(jme, JME_SMBINTF);
2731         }
2732         if (!to) {
2733                 netif_err(jme, hw, jme->dev, "SMB Bus Busy\n");
2734                 return;
2735         }
2736
2737         mdelay(2);
2738 }
2739
2740 static int
2741 jme_get_eeprom_len(struct net_device *netdev)
2742 {
2743         struct jme_adapter *jme = netdev_priv(netdev);
2744         u32 val;
2745         val = jread32(jme, JME_SMBCSR);
2746         return (val & SMBCSR_EEPROMD) ? JME_SMB_LEN : 0;
2747 }
2748
2749 static int
2750 jme_get_eeprom(struct net_device *netdev,
2751                 struct ethtool_eeprom *eeprom, u8 *data)
2752 {
2753         struct jme_adapter *jme = netdev_priv(netdev);
2754         int i, offset = eeprom->offset, len = eeprom->len;
2755
2756         /*
2757          * ethtool will check the boundary for us
2758          */
2759         eeprom->magic = JME_EEPROM_MAGIC;
2760         for (i = 0 ; i < len ; ++i)
2761                 data[i] = jme_smb_read(jme, i + offset);
2762
2763         return 0;
2764 }
2765
2766 static int
2767 jme_set_eeprom(struct net_device *netdev,
2768                 struct ethtool_eeprom *eeprom, u8 *data)
2769 {
2770         struct jme_adapter *jme = netdev_priv(netdev);
2771         int i, offset = eeprom->offset, len = eeprom->len;
2772
2773         if (eeprom->magic != JME_EEPROM_MAGIC)
2774                 return -EINVAL;
2775
2776         /*
2777          * ethtool will check the boundary for us
2778          */
2779         for (i = 0 ; i < len ; ++i)
2780                 jme_smb_write(jme, i + offset, data[i]);
2781
2782         return 0;
2783 }
2784
2785 static const struct ethtool_ops jme_ethtool_ops = {
2786         .get_drvinfo            = jme_get_drvinfo,
2787         .get_regs_len           = jme_get_regs_len,
2788         .get_regs               = jme_get_regs,
2789         .get_coalesce           = jme_get_coalesce,
2790         .set_coalesce           = jme_set_coalesce,
2791         .get_pauseparam         = jme_get_pauseparam,
2792         .set_pauseparam         = jme_set_pauseparam,
2793         .get_wol                = jme_get_wol,
2794         .set_wol                = jme_set_wol,
2795         .get_settings           = jme_get_settings,
2796         .set_settings           = jme_set_settings,
2797         .get_link               = jme_get_link,
2798         .get_msglevel           = jme_get_msglevel,
2799         .set_msglevel           = jme_set_msglevel,
2800         .nway_reset             = jme_nway_reset,
2801         .get_eeprom_len         = jme_get_eeprom_len,
2802         .get_eeprom             = jme_get_eeprom,
2803         .set_eeprom             = jme_set_eeprom,
2804 };
2805
2806 static int
2807 jme_pci_dma64(struct pci_dev *pdev)
2808 {
2809         if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250 &&
2810             !pci_set_dma_mask(pdev, DMA_BIT_MASK(64)))
2811                 if (!pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)))
2812                         return 1;
2813
2814         if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250 &&
2815             !pci_set_dma_mask(pdev, DMA_BIT_MASK(40)))
2816                 if (!pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(40)))
2817                         return 1;
2818
2819         if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32)))
2820                 if (!pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)))
2821                         return 0;
2822
2823         return -1;
2824 }
2825
2826 static inline void
2827 jme_phy_init(struct jme_adapter *jme)
2828 {
2829         u16 reg26;
2830
2831         reg26 = jme_mdio_read(jme->dev, jme->mii_if.phy_id, 26);
2832         jme_mdio_write(jme->dev, jme->mii_if.phy_id, 26, reg26 | 0x1000);
2833 }
2834
2835 static inline void
2836 jme_check_hw_ver(struct jme_adapter *jme)
2837 {
2838         u32 chipmode;
2839
2840         chipmode = jread32(jme, JME_CHIPMODE);
2841
2842         jme->fpgaver = (chipmode & CM_FPGAVER_MASK) >> CM_FPGAVER_SHIFT;
2843         jme->chiprev = (chipmode & CM_CHIPREV_MASK) >> CM_CHIPREV_SHIFT;
2844         jme->chip_main_rev = jme->chiprev & 0xF;
2845         jme->chip_sub_rev = (jme->chiprev >> 4) & 0xF;
2846 }
2847
2848 static const struct net_device_ops jme_netdev_ops = {
2849         .ndo_open               = jme_open,
2850         .ndo_stop               = jme_close,
2851         .ndo_validate_addr      = eth_validate_addr,
2852         .ndo_do_ioctl           = jme_ioctl,
2853         .ndo_start_xmit         = jme_start_xmit,
2854         .ndo_set_mac_address    = jme_set_macaddr,
2855         .ndo_set_multicast_list = jme_set_multi,
2856         .ndo_change_mtu         = jme_change_mtu,
2857         .ndo_tx_timeout         = jme_tx_timeout,
2858         .ndo_vlan_rx_register   = jme_vlan_rx_register,
2859         .ndo_fix_features       = jme_fix_features,
2860         .ndo_set_features       = jme_set_features,
2861 };
2862
2863 static int __devinit
2864 jme_init_one(struct pci_dev *pdev,
2865              const struct pci_device_id *ent)
2866 {
2867         int rc = 0, using_dac, i;
2868         struct net_device *netdev;
2869         struct jme_adapter *jme;
2870         u16 bmcr, bmsr;
2871         u32 apmc;
2872
2873         /*
2874          * set up PCI device basics
2875          */
2876         rc = pci_enable_device(pdev);
2877         if (rc) {
2878                 pr_err("Cannot enable PCI device\n");
2879                 goto err_out;
2880         }
2881
2882         using_dac = jme_pci_dma64(pdev);
2883         if (using_dac < 0) {
2884                 pr_err("Cannot set PCI DMA Mask\n");
2885                 rc = -EIO;
2886                 goto err_out_disable_pdev;
2887         }
2888
2889         if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
2890                 pr_err("No PCI resource region found\n");
2891                 rc = -ENOMEM;
2892                 goto err_out_disable_pdev;
2893         }
2894
2895         rc = pci_request_regions(pdev, DRV_NAME);
2896         if (rc) {
2897                 pr_err("Cannot obtain PCI resource region\n");
2898                 goto err_out_disable_pdev;
2899         }
2900
2901         pci_set_master(pdev);
2902
2903         /*
2904          * alloc and init net device
2905          */
2906         netdev = alloc_etherdev(sizeof(*jme));
2907         if (!netdev) {
2908                 pr_err("Cannot allocate netdev structure\n");
2909                 rc = -ENOMEM;
2910                 goto err_out_release_regions;
2911         }
2912         netdev->netdev_ops = &jme_netdev_ops;
2913         netdev->ethtool_ops             = &jme_ethtool_ops;
2914         netdev->watchdog_timeo          = TX_TIMEOUT;
2915         netdev->hw_features             =       NETIF_F_IP_CSUM |
2916                                                 NETIF_F_IPV6_CSUM |
2917                                                 NETIF_F_SG |
2918                                                 NETIF_F_TSO |
2919                                                 NETIF_F_TSO6 |
2920                                                 NETIF_F_RXCSUM;
2921         netdev->features                =       NETIF_F_IP_CSUM |
2922                                                 NETIF_F_IPV6_CSUM |
2923                                                 NETIF_F_SG |
2924                                                 NETIF_F_TSO |
2925                                                 NETIF_F_TSO6 |
2926                                                 NETIF_F_HW_VLAN_TX |
2927                                                 NETIF_F_HW_VLAN_RX;
2928         if (using_dac)
2929                 netdev->features        |=      NETIF_F_HIGHDMA;
2930
2931         SET_NETDEV_DEV(netdev, &pdev->dev);
2932         pci_set_drvdata(pdev, netdev);
2933
2934         /*
2935          * init adapter info
2936          */
2937         jme = netdev_priv(netdev);
2938         jme->pdev = pdev;
2939         jme->dev = netdev;
2940         jme->jme_rx = netif_rx;
2941         jme->jme_vlan_rx = vlan_hwaccel_rx;
2942         jme->old_mtu = netdev->mtu = 1500;
2943         jme->phylink = 0;
2944         jme->tx_ring_size = 1 << 10;
2945         jme->tx_ring_mask = jme->tx_ring_size - 1;
2946         jme->tx_wake_threshold = 1 << 9;
2947         jme->rx_ring_size = 1 << 9;
2948         jme->rx_ring_mask = jme->rx_ring_size - 1;
2949         jme->msg_enable = JME_DEF_MSG_ENABLE;
2950         jme->regs = ioremap(pci_resource_start(pdev, 0),
2951                              pci_resource_len(pdev, 0));
2952         if (!(jme->regs)) {
2953                 pr_err("Mapping PCI resource region error\n");
2954                 rc = -ENOMEM;
2955                 goto err_out_free_netdev;
2956         }
2957
2958         if (no_pseudohp) {
2959                 apmc = jread32(jme, JME_APMC) & ~JME_APMC_PSEUDO_HP_EN;
2960                 jwrite32(jme, JME_APMC, apmc);
2961         } else if (force_pseudohp) {
2962                 apmc = jread32(jme, JME_APMC) | JME_APMC_PSEUDO_HP_EN;
2963                 jwrite32(jme, JME_APMC, apmc);
2964         }
2965
2966         NETIF_NAPI_SET(netdev, &jme->napi, jme_poll, jme->rx_ring_size >> 2)
2967
2968         spin_lock_init(&jme->phy_lock);
2969         spin_lock_init(&jme->macaddr_lock);
2970         spin_lock_init(&jme->rxmcs_lock);
2971
2972         atomic_set(&jme->link_changing, 1);
2973         atomic_set(&jme->rx_cleaning, 1);
2974         atomic_set(&jme->tx_cleaning, 1);
2975         atomic_set(&jme->rx_empty, 1);
2976
2977         tasklet_init(&jme->pcc_task,
2978                      jme_pcc_tasklet,
2979                      (unsigned long) jme);
2980         tasklet_init(&jme->linkch_task,
2981                      jme_link_change_tasklet,
2982                      (unsigned long) jme);
2983         tasklet_init(&jme->txclean_task,
2984                      jme_tx_clean_tasklet,
2985                      (unsigned long) jme);
2986         tasklet_init(&jme->rxclean_task,
2987                      jme_rx_clean_tasklet,
2988                      (unsigned long) jme);
2989         tasklet_init(&jme->rxempty_task,
2990                      jme_rx_empty_tasklet,
2991                      (unsigned long) jme);
2992         tasklet_disable_nosync(&jme->linkch_task);
2993         tasklet_disable_nosync(&jme->txclean_task);
2994         tasklet_disable_nosync(&jme->rxclean_task);
2995         tasklet_disable_nosync(&jme->rxempty_task);
2996         jme->dpi.cur = PCC_P1;
2997
2998         jme->reg_ghc = 0;
2999         jme->reg_rxcs = RXCS_DEFAULT;
3000         jme->reg_rxmcs = RXMCS_DEFAULT;
3001         jme->reg_txpfc = 0;
3002         jme->reg_pmcs = PMCS_MFEN;
3003         jme->reg_gpreg1 = GPREG1_DEFAULT;
3004
3005         if (jme->reg_rxmcs & RXMCS_CHECKSUM)
3006                 netdev->features |= NETIF_F_RXCSUM;
3007
3008         /*
3009          * Get Max Read Req Size from PCI Config Space
3010          */
3011         pci_read_config_byte(pdev, PCI_DCSR_MRRS, &jme->mrrs);
3012         jme->mrrs &= PCI_DCSR_MRRS_MASK;
3013         switch (jme->mrrs) {
3014         case MRRS_128B:
3015                 jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_128B;
3016                 break;
3017         case MRRS_256B:
3018                 jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_256B;
3019                 break;
3020         default:
3021                 jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_512B;
3022                 break;
3023         }
3024
3025         /*
3026          * Must check before reset_mac_processor
3027          */
3028         jme_check_hw_ver(jme);
3029         jme->mii_if.dev = netdev;
3030         if (jme->fpgaver) {
3031                 jme->mii_if.phy_id = 0;
3032                 for (i = 1 ; i < 32 ; ++i) {
3033                         bmcr = jme_mdio_read(netdev, i, MII_BMCR);
3034                         bmsr = jme_mdio_read(netdev, i, MII_BMSR);
3035                         if (bmcr != 0xFFFFU && (bmcr != 0 || bmsr != 0)) {
3036                                 jme->mii_if.phy_id = i;
3037                                 break;
3038                         }
3039                 }
3040
3041                 if (!jme->mii_if.phy_id) {
3042                         rc = -EIO;
3043                         pr_err("Can not find phy_id\n");
3044                         goto err_out_unmap;
3045                 }
3046
3047                 jme->reg_ghc |= GHC_LINK_POLL;
3048         } else {
3049                 jme->mii_if.phy_id = 1;
3050         }
3051         if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250)
3052                 jme->mii_if.supports_gmii = true;
3053         else
3054                 jme->mii_if.supports_gmii = false;
3055         jme->mii_if.phy_id_mask = 0x1F;
3056         jme->mii_if.reg_num_mask = 0x1F;
3057         jme->mii_if.mdio_read = jme_mdio_read;
3058         jme->mii_if.mdio_write = jme_mdio_write;
3059
3060         jme_clear_pm(jme);
3061         jme_set_phyfifo_5level(jme);
3062         jme->pcirev = pdev->revision;
3063         if (!jme->fpgaver)
3064                 jme_phy_init(jme);
3065         jme_phy_off(jme);
3066
3067         /*
3068          * Reset MAC processor and reload EEPROM for MAC Address
3069          */
3070         jme_reset_mac_processor(jme);
3071         rc = jme_reload_eeprom(jme);
3072         if (rc) {
3073                 pr_err("Reload eeprom for reading MAC Address error\n");
3074                 goto err_out_unmap;
3075         }
3076         jme_load_macaddr(netdev);
3077
3078         /*
3079          * Tell stack that we are not ready to work until open()
3080          */
3081         netif_carrier_off(netdev);
3082
3083         rc = register_netdev(netdev);
3084         if (rc) {
3085                 pr_err("Cannot register net device\n");
3086                 goto err_out_unmap;
3087         }
3088
3089         netif_info(jme, probe, jme->dev, "%s%s chiprev:%x pcirev:%x macaddr:%pM\n",
3090                    (jme->pdev->device == PCI_DEVICE_ID_JMICRON_JMC250) ?
3091                    "JMC250 Gigabit Ethernet" :
3092                    (jme->pdev->device == PCI_DEVICE_ID_JMICRON_JMC260) ?
3093                    "JMC260 Fast Ethernet" : "Unknown",
3094                    (jme->fpgaver != 0) ? " (FPGA)" : "",
3095                    (jme->fpgaver != 0) ? jme->fpgaver : jme->chiprev,
3096                    jme->pcirev, netdev->dev_addr);
3097
3098         return 0;
3099
3100 err_out_unmap:
3101         iounmap(jme->regs);
3102 err_out_free_netdev:
3103         pci_set_drvdata(pdev, NULL);
3104         free_netdev(netdev);
3105 err_out_release_regions:
3106         pci_release_regions(pdev);
3107 err_out_disable_pdev:
3108         pci_disable_device(pdev);
3109 err_out:
3110         return rc;
3111 }
3112
3113 static void __devexit
3114 jme_remove_one(struct pci_dev *pdev)
3115 {
3116         struct net_device *netdev = pci_get_drvdata(pdev);
3117         struct jme_adapter *jme = netdev_priv(netdev);
3118
3119         unregister_netdev(netdev);
3120         iounmap(jme->regs);
3121         pci_set_drvdata(pdev, NULL);
3122         free_netdev(netdev);
3123         pci_release_regions(pdev);
3124         pci_disable_device(pdev);
3125
3126 }
3127
3128 static void
3129 jme_shutdown(struct pci_dev *pdev)
3130 {
3131         struct net_device *netdev = pci_get_drvdata(pdev);
3132         struct jme_adapter *jme = netdev_priv(netdev);
3133
3134         jme_powersave_phy(jme);
3135         pci_pme_active(pdev, true);
3136 }
3137
3138 #ifdef CONFIG_PM
3139 static int jme_suspend(struct device *dev)
3140 {
3141         struct pci_dev *pdev = to_pci_dev(dev);
3142         struct net_device *netdev = pci_get_drvdata(pdev);
3143         struct jme_adapter *jme = netdev_priv(netdev);
3144
3145         atomic_dec(&jme->link_changing);
3146
3147         netif_device_detach(netdev);
3148         netif_stop_queue(netdev);
3149         jme_stop_irq(jme);
3150
3151         tasklet_disable(&jme->txclean_task);
3152         tasklet_disable(&jme->rxclean_task);
3153         tasklet_disable(&jme->rxempty_task);
3154
3155         if (netif_carrier_ok(netdev)) {
3156                 if (test_bit(JME_FLAG_POLL, &jme->flags))
3157                         jme_polling_mode(jme);
3158
3159                 jme_stop_pcc_timer(jme);
3160                 jme_disable_rx_engine(jme);
3161                 jme_disable_tx_engine(jme);
3162                 jme_reset_mac_processor(jme);
3163                 jme_free_rx_resources(jme);
3164                 jme_free_tx_resources(jme);
3165                 netif_carrier_off(netdev);
3166                 jme->phylink = 0;
3167         }
3168
3169         tasklet_enable(&jme->txclean_task);
3170         tasklet_hi_enable(&jme->rxclean_task);
3171         tasklet_hi_enable(&jme->rxempty_task);
3172
3173         jme_powersave_phy(jme);
3174
3175         return 0;
3176 }
3177
3178 static int jme_resume(struct device *dev)
3179 {
3180         struct pci_dev *pdev = to_pci_dev(dev);
3181         struct net_device *netdev = pci_get_drvdata(pdev);
3182         struct jme_adapter *jme = netdev_priv(netdev);
3183
3184         jwrite32(jme, JME_PMCS, 0xFFFF0000 | jme->reg_pmcs);
3185
3186         jme_phy_on(jme);
3187         if (test_bit(JME_FLAG_SSET, &jme->flags))
3188                 jme_set_settings(netdev, &jme->old_ecmd);
3189         else
3190                 jme_reset_phy_processor(jme);
3191
3192         jme_start_irq(jme);
3193         netif_device_attach(netdev);
3194
3195         atomic_inc(&jme->link_changing);
3196
3197         jme_reset_link(jme);
3198
3199         return 0;
3200 }
3201
3202 static SIMPLE_DEV_PM_OPS(jme_pm_ops, jme_suspend, jme_resume);
3203 #define JME_PM_OPS (&jme_pm_ops)
3204
3205 #else
3206
3207 #define JME_PM_OPS NULL
3208 #endif
3209
3210 static DEFINE_PCI_DEVICE_TABLE(jme_pci_tbl) = {
3211         { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMC250) },
3212         { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMC260) },
3213         { }
3214 };
3215
3216 static struct pci_driver jme_driver = {
3217         .name           = DRV_NAME,
3218         .id_table       = jme_pci_tbl,
3219         .probe          = jme_init_one,
3220         .remove         = __devexit_p(jme_remove_one),
3221         .shutdown       = jme_shutdown,
3222         .driver.pm      = JME_PM_OPS,
3223 };
3224
3225 static int __init
3226 jme_init_module(void)
3227 {
3228         pr_info("JMicron JMC2XX ethernet driver version %s\n", DRV_VERSION);
3229         return pci_register_driver(&jme_driver);
3230 }
3231
3232 static void __exit
3233 jme_cleanup_module(void)
3234 {
3235         pci_unregister_driver(&jme_driver);
3236 }
3237
3238 module_init(jme_init_module);
3239 module_exit(jme_cleanup_module);
3240
3241 MODULE_AUTHOR("Guo-Fu Tseng <cooldavid@cooldavid.org>");
3242 MODULE_DESCRIPTION("JMicron JMC2x0 PCI Express Ethernet driver");
3243 MODULE_LICENSE("GPL");
3244 MODULE_VERSION(DRV_VERSION);
3245 MODULE_DEVICE_TABLE(pci, jme_pci_tbl);
3246