drivers/net/ethernet/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/pci-aspm.h>
  31 #include <linux/netdevice.h>
  32 #include <linux/etherdevice.h>
  33 #include <linux/ethtool.h>
  34 #include <linux/mii.h>
  35 #include <linux/crc32.h>
  36 #include <linux/delay.h>
  37 #include <linux/spinlock.h>
  38 #include <linux/in.h>
  39 #include <linux/ip.h>
  40 #include <linux/ipv6.h>
  41 #include <linux/tcp.h>
  42 #include <linux/udp.h>
  43 #include <linux/if_vlan.h>
  44 #include <linux/slab.h>
  45 #include <net/ip6_checksum.h>
  46 #include "jme.h"
  47
  48 static int force_pseudohp = -1;
  49 static int no_pseudohp = -1;
  50 static int no_extplug = -1;
  51 module_param(force_pseudohp, int, 0);
  52 MODULE_PARM_DESC(force_pseudohp,
  53         "Enable pseudo hot-plug feature manually by driver instead of BIOS.");
  54 module_param(no_pseudohp, int, 0);
  55 MODULE_PARM_DESC(no_pseudohp, "Disable pseudo hot-plug feature.");
  56 module_param(no_extplug, int, 0);
  57 MODULE_PARM_DESC(no_extplug,
  58         "Do not use external plug signal for pseudo hot-plug.");
  59
  60 static int
  61 jme_mdio_read(struct net_device *netdev, int phy, int reg)
  62 {
  63         struct jme_adapter *jme = netdev_priv(netdev);
  64         int i, val, again = (reg == MII_BMSR) ? 1 : 0;
  65
  66 read_again:
  67         jwrite32(jme, JME_SMI, SMI_OP_REQ |
  68                                 smi_phy_addr(phy) |
  69                                 smi_reg_addr(reg));
  70
  71         wmb();
  72         for (i = JME_PHY_TIMEOUT * 50 ; i > 0 ; --i) {
  73                 udelay(20);
  74                 val = jread32(jme, JME_SMI);
  75                 if ((val & SMI_OP_REQ) == 0)
  76                         break;
  77         }
  78
  79         if (i == 0) {
  80                 pr_err("phy(%d) read timeout : %d\n", phy, reg);
  81                 return 0;
  82         }
  83
  84         if (again--)
  85                 goto read_again;
  86
  87         return (val & SMI_DATA_MASK) >> SMI_DATA_SHIFT;
  88 }
  89
  90 static void
  91 jme_mdio_write(struct net_device *netdev,
  92                                 int phy, int reg, int val)
  93 {
  94         struct jme_adapter *jme = netdev_priv(netdev);
  95         int i;
  96
  97         jwrite32(jme, JME_SMI, SMI_OP_WRITE | SMI_OP_REQ |
  98                 ((val << SMI_DATA_SHIFT) & SMI_DATA_MASK) |
  99                 smi_phy_addr(phy) | smi_reg_addr(reg));
 100
 101         wmb();
 102         for (i = JME_PHY_TIMEOUT * 50 ; i > 0 ; --i) {
 103                 udelay(20);
 104                 if ((jread32(jme, JME_SMI) & SMI_OP_REQ) == 0)
 105                         break;
 106         }
 107
 108         if (i == 0)
 109                 pr_err("phy(%d) write timeout : %d\n", phy, reg);
 110 }
 111
 112 static inline void
 113 jme_reset_phy_processor(struct jme_adapter *jme)
 114 {
 115         u32 val;
 116
 117         jme_mdio_write(jme->dev,
 118                         jme->mii_if.phy_id,
 119                         MII_ADVERTISE, ADVERTISE_ALL |
 120                         ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
 121
 122         if (jme->pdev->device == PCI_DEVICE_ID_JMICRON_JMC250)
 123                 jme_mdio_write(jme->dev,
 124                                 jme->mii_if.phy_id,
 125                                 MII_CTRL1000,
 126                                 ADVERTISE_1000FULL | ADVERTISE_1000HALF);
 127
 128         val = jme_mdio_read(jme->dev,
 129                                 jme->mii_if.phy_id,
 130                                 MII_BMCR);
 131
 132         jme_mdio_write(jme->dev,
 133                         jme->mii_if.phy_id,
 134                         MII_BMCR, val | BMCR_RESET);
 135 }
 136
 137 static void
 138 jme_setup_wakeup_frame(struct jme_adapter *jme,
 139                        const u32 *mask, u32 crc, int fnr)
 140 {
 141         int i;
 142
 143         /*
 144          * Setup CRC pattern
 145          */
 146         jwrite32(jme, JME_WFOI, WFOI_CRC_SEL | (fnr & WFOI_FRAME_SEL));
 147         wmb();
 148         jwrite32(jme, JME_WFODP, crc);
 149         wmb();
 150
 151         /*
 152          * Setup Mask
 153          */
 154         for (i = 0 ; i < WAKEUP_FRAME_MASK_DWNR ; ++i) {
 155                 jwrite32(jme, JME_WFOI,
 156                                 ((i << WFOI_MASK_SHIFT) & WFOI_MASK_SEL) |
 157                                 (fnr & WFOI_FRAME_SEL));
 158                 wmb();
 159                 jwrite32(jme, JME_WFODP, mask[i]);
 160                 wmb();
 161         }
 162 }
 163
 164 static inline void
 165 jme_mac_rxclk_off(struct jme_adapter *jme)
 166 {
 167         jme->reg_gpreg1 |= GPREG1_RXCLKOFF;
 168         jwrite32f(jme, JME_GPREG1, jme->reg_gpreg1);
 169 }
 170
 171 static inline void
 172 jme_mac_rxclk_on(struct jme_adapter *jme)
 173 {
 174         jme->reg_gpreg1 &= ~GPREG1_RXCLKOFF;
 175         jwrite32f(jme, JME_GPREG1, jme->reg_gpreg1);
 176 }
 177
 178 static inline void
 179 jme_mac_txclk_off(struct jme_adapter *jme)
 180 {
 181         jme->reg_ghc &= ~(GHC_TO_CLK_SRC | GHC_TXMAC_CLK_SRC);
 182         jwrite32f(jme, JME_GHC, jme->reg_ghc);
 183 }
 184
 185 static inline void
 186 jme_mac_txclk_on(struct jme_adapter *jme)
 187 {
 188         u32 speed = jme->reg_ghc & GHC_SPEED;
 189         if (speed == GHC_SPEED_1000M)
 190                 jme->reg_ghc |= GHC_TO_CLK_GPHY | GHC_TXMAC_CLK_GPHY;
 191         else
 192                 jme->reg_ghc |= GHC_TO_CLK_PCIE | GHC_TXMAC_CLK_PCIE;
 193         jwrite32f(jme, JME_GHC, jme->reg_ghc);
 194 }
 195
 196 static inline void
 197 jme_reset_ghc_speed(struct jme_adapter *jme)
 198 {
 199         jme->reg_ghc &= ~(GHC_SPEED | GHC_DPX);
 200         jwrite32f(jme, JME_GHC, jme->reg_ghc);
 201 }
 202
 203 static inline void
 204 jme_reset_250A2_workaround(struct jme_adapter *jme)
 205 {
 206         jme->reg_gpreg1 &= ~(GPREG1_HALFMODEPATCH |
 207                              GPREG1_RSSPATCH);
 208         jwrite32(jme, JME_GPREG1, jme->reg_gpreg1);
 209 }
 210
 211 static inline void
 212 jme_assert_ghc_reset(struct jme_adapter *jme)
 213 {
 214         jme->reg_ghc |= GHC_SWRST;
 215         jwrite32f(jme, JME_GHC, jme->reg_ghc);
 216 }
 217
 218 static inline void
 219 jme_clear_ghc_reset(struct jme_adapter *jme)
 220 {
 221         jme->reg_ghc &= ~GHC_SWRST;
 222         jwrite32f(jme, JME_GHC, jme->reg_ghc);
 223 }
 224
 225 static inline void
 226 jme_reset_mac_processor(struct jme_adapter *jme)
 227 {
 228         static const u32 mask[WAKEUP_FRAME_MASK_DWNR] = {0, 0, 0, 0};
 229         u32 crc = 0xCDCDCDCD;
 230         u32 gpreg0;
 231         int i;
 232
 233         jme_reset_ghc_speed(jme);
 234         jme_reset_250A2_workaround(jme);
 235
 236         jme_mac_rxclk_on(jme);
 237         jme_mac_txclk_on(jme);
 238         udelay(1);
 239         jme_assert_ghc_reset(jme);
 240         udelay(1);
 241         jme_mac_rxclk_off(jme);
 242         jme_mac_txclk_off(jme);
 243         udelay(1);
 244         jme_clear_ghc_reset(jme);
 245         udelay(1);
 246         jme_mac_rxclk_on(jme);
 247         jme_mac_txclk_on(jme);
 248         udelay(1);
 249         jme_mac_rxclk_off(jme);
 250         jme_mac_txclk_off(jme);
 251
 252         jwrite32(jme, JME_RXDBA_LO, 0x00000000);
 253         jwrite32(jme, JME_RXDBA_HI, 0x00000000);
 254         jwrite32(jme, JME_RXQDC, 0x00000000);
 255         jwrite32(jme, JME_RXNDA, 0x00000000);
 256         jwrite32(jme, JME_TXDBA_LO, 0x00000000);
 257         jwrite32(jme, JME_TXDBA_HI, 0x00000000);
 258         jwrite32(jme, JME_TXQDC, 0x00000000);
 259         jwrite32(jme, JME_TXNDA, 0x00000000);
 260
 261         jwrite32(jme, JME_RXMCHT_LO, 0x00000000);
 262         jwrite32(jme, JME_RXMCHT_HI, 0x00000000);
 263         for (i = 0 ; i < WAKEUP_FRAME_NR ; ++i)
 264                 jme_setup_wakeup_frame(jme, mask, crc, i);
 265         if (jme->fpgaver)
 266                 gpreg0 = GPREG0_DEFAULT | GPREG0_LNKINTPOLL;
 267         else
 268                 gpreg0 = GPREG0_DEFAULT;
 269         jwrite32(jme, JME_GPREG0, gpreg0);
 270 }
 271
 272 static inline void
 273 jme_clear_pm(struct jme_adapter *jme)
 274 {
 275         jwrite32(jme, JME_PMCS, PMCS_STMASK | jme->reg_pmcs);
 276 }
 277
 278 static int
 279 jme_reload_eeprom(struct jme_adapter *jme)
 280 {
 281         u32 val;
 282         int i;
 283
 284         val = jread32(jme, JME_SMBCSR);
 285
 286         if (val & SMBCSR_EEPROMD) {
 287                 val |= SMBCSR_CNACK;
 288                 jwrite32(jme, JME_SMBCSR, val);
 289                 val |= SMBCSR_RELOAD;
 290                 jwrite32(jme, JME_SMBCSR, val);
 291                 mdelay(12);
 292
 293                 for (i = JME_EEPROM_RELOAD_TIMEOUT; i > 0; --i) {
 294                         mdelay(1);
 295                         if ((jread32(jme, JME_SMBCSR) & SMBCSR_RELOAD) == 0)
 296                                 break;
 297                 }
 298
 299                 if (i == 0) {
 300                         pr_err("eeprom reload timeout\n");
 301                         return -EIO;
 302                 }
 303         }
 304
 305         return 0;
 306 }
 307
 308 static void
 309 jme_load_macaddr(struct net_device *netdev)
 310 {
 311         struct jme_adapter *jme = netdev_priv(netdev);
 312         unsigned char macaddr[ETH_ALEN];
 313         u32 val;
 314
 315         spin_lock_bh(&jme->macaddr_lock);
 316         val = jread32(jme, JME_RXUMA_LO);
 317         macaddr[0] = (val >>  0) & 0xFF;
 318         macaddr[1] = (val >>  8) & 0xFF;
 319         macaddr[2] = (val >> 16) & 0xFF;
 320         macaddr[3] = (val >> 24) & 0xFF;
 321         val = jread32(jme, JME_RXUMA_HI);
 322         macaddr[4] = (val >>  0) & 0xFF;
 323         macaddr[5] = (val >>  8) & 0xFF;
 324         memcpy(netdev->dev_addr, macaddr, ETH_ALEN);
 325         spin_unlock_bh(&jme->macaddr_lock);
 326 }
 327
 328 static inline void
 329 jme_set_rx_pcc(struct jme_adapter *jme, int p)
 330 {
 331         switch (p) {
 332         case PCC_OFF:
 333                 jwrite32(jme, JME_PCCRX0,
 334                         ((PCC_OFF_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
 335                         ((PCC_OFF_CNT << PCCRX_SHIFT) & PCCRX_MASK));
 336                 break;
 337         case PCC_P1:
 338                 jwrite32(jme, JME_PCCRX0,
 339                         ((PCC_P1_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
 340                         ((PCC_P1_CNT << PCCRX_SHIFT) & PCCRX_MASK));
 341                 break;
 342         case PCC_P2:
 343                 jwrite32(jme, JME_PCCRX0,
 344                         ((PCC_P2_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
 345                         ((PCC_P2_CNT << PCCRX_SHIFT) & PCCRX_MASK));
 346                 break;
 347         case PCC_P3:
 348                 jwrite32(jme, JME_PCCRX0,
 349                         ((PCC_P3_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
 350                         ((PCC_P3_CNT << PCCRX_SHIFT) & PCCRX_MASK));
 351                 break;
 352         default:
 353                 break;
 354         }
 355         wmb();
 356
 357         if (!(test_bit(JME_FLAG_POLL, &jme->flags)))
 358                 netif_info(jme, rx_status, jme->dev, "Switched to PCC_P%d\n", p);
 359 }
 360
 361 static void
 362 jme_start_irq(struct jme_adapter *jme)
 363 {
 364         register struct dynpcc_info *dpi = &(jme->dpi);
 365
 366         jme_set_rx_pcc(jme, PCC_P1);
 367         dpi->cur                = PCC_P1;
 368         dpi->attempt            = PCC_P1;
 369         dpi->cnt                = 0;
 370
 371         jwrite32(jme, JME_PCCTX,
 372                         ((PCC_TX_TO << PCCTXTO_SHIFT) & PCCTXTO_MASK) |
 373                         ((PCC_TX_CNT << PCCTX_SHIFT) & PCCTX_MASK) |
 374                         PCCTXQ0_EN
 375                 );
 376
 377         /*
 378          * Enable Interrupts
 379          */
 380         jwrite32(jme, JME_IENS, INTR_ENABLE);
 381 }
 382
 383 static inline void
 384 jme_stop_irq(struct jme_adapter *jme)
 385 {
 386         /*
 387          * Disable Interrupts
 388          */
 389         jwrite32f(jme, JME_IENC, INTR_ENABLE);
 390 }
 391
 392 static u32
 393 jme_linkstat_from_phy(struct jme_adapter *jme)
 394 {
 395         u32 phylink, bmsr;
 396
 397         phylink = jme_mdio_read(jme->dev, jme->mii_if.phy_id, 17);
 398         bmsr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMSR);
 399         if (bmsr & BMSR_ANCOMP)
 400                 phylink |= PHY_LINK_AUTONEG_COMPLETE;
 401
 402         return phylink;
 403 }
 404
 405 static inline void
 406 jme_set_phyfifo_5level(struct jme_adapter *jme)
 407 {
 408         jme_mdio_write(jme->dev, jme->mii_if.phy_id, 27, 0x0004);
 409 }
 410
 411 static inline void
 412 jme_set_phyfifo_8level(struct jme_adapter *jme)
 413 {
 414         jme_mdio_write(jme->dev, jme->mii_if.phy_id, 27, 0x0000);
 415 }
 416
 417 static int
 418 jme_check_link(struct net_device *netdev, int testonly)
 419 {
 420         struct jme_adapter *jme = netdev_priv(netdev);
 421         u32 phylink, cnt = JME_SPDRSV_TIMEOUT, bmcr;
 422         char linkmsg[64];
 423         int rc = 0;
 424
 425         linkmsg[0] = '\0';
 426
 427         if (jme->fpgaver)
 428                 phylink = jme_linkstat_from_phy(jme);
 429         else
 430                 phylink = jread32(jme, JME_PHY_LINK);
 431
 432         if (phylink & PHY_LINK_UP) {
 433                 if (!(phylink & PHY_LINK_AUTONEG_COMPLETE)) {
 434                         /*
 435                          * If we did not enable AN
 436                          * Speed/Duplex Info should be obtained from SMI
 437                          */
 438                         phylink = PHY_LINK_UP;
 439
 440                         bmcr = jme_mdio_read(jme->dev,
 441                                                 jme->mii_if.phy_id,
 442                                                 MII_BMCR);
 443
 444                         phylink |= ((bmcr & BMCR_SPEED1000) &&
 445                                         (bmcr & BMCR_SPEED100) == 0) ?
 446                                         PHY_LINK_SPEED_1000M :
 447                                         (bmcr & BMCR_SPEED100) ?
 448                                         PHY_LINK_SPEED_100M :
 449                                         PHY_LINK_SPEED_10M;
 450
 451                         phylink |= (bmcr & BMCR_FULLDPLX) ?
 452                                          PHY_LINK_DUPLEX : 0;
 453
 454                         strcat(linkmsg, "Forced: ");
 455                 } else {
 456                         /*
 457                          * Keep polling for speed/duplex resolve complete
 458                          */
 459                         while (!(phylink & PHY_LINK_SPEEDDPU_RESOLVED) &&
 460                                 --cnt) {
 461
 462                                 udelay(1);
 463
 464                                 if (jme->fpgaver)
 465                                         phylink = jme_linkstat_from_phy(jme);
 466                                 else
 467                                         phylink = jread32(jme, JME_PHY_LINK);
 468                         }
 469                         if (!cnt)
 470                                 pr_err("Waiting speed resolve timeout\n");
 471
 472                         strcat(linkmsg, "ANed: ");
 473                 }
 474
 475                 if (jme->phylink == phylink) {
 476                         rc = 1;
 477                         goto out;
 478                 }
 479                 if (testonly)
 480                         goto out;
 481
 482                 jme->phylink = phylink;
 483
 484                 /*
 485                  * The speed/duplex setting of jme->reg_ghc already cleared
 486                  * by jme_reset_mac_processor()
 487                  */
 488                 switch (phylink & PHY_LINK_SPEED_MASK) {
 489                 case PHY_LINK_SPEED_10M:
 490                         jme->reg_ghc |= GHC_SPEED_10M;
 491                         strcat(linkmsg, "10 Mbps, ");
 492                         break;
 493                 case PHY_LINK_SPEED_100M:
 494                         jme->reg_ghc |= GHC_SPEED_100M;
 495                         strcat(linkmsg, "100 Mbps, ");
 496                         break;
 497                 case PHY_LINK_SPEED_1000M:
 498                         jme->reg_ghc |= GHC_SPEED_1000M;
 499                         strcat(linkmsg, "1000 Mbps, ");
 500                         break;
 501                 default:
 502                         break;
 503                 }
 504
 505                 if (phylink & PHY_LINK_DUPLEX) {
 506                         jwrite32(jme, JME_TXMCS, TXMCS_DEFAULT);
 507                         jwrite32(jme, JME_TXTRHD, TXTRHD_FULLDUPLEX);
 508                         jme->reg_ghc |= GHC_DPX;
 509                 } else {
 510                         jwrite32(jme, JME_TXMCS, TXMCS_DEFAULT |
 511                                                 TXMCS_BACKOFF |
 512                                                 TXMCS_CARRIERSENSE |
 513                                                 TXMCS_COLLISION);
 514                         jwrite32(jme, JME_TXTRHD, TXTRHD_HALFDUPLEX);
 515                 }
 516
 517                 jwrite32(jme, JME_GHC, jme->reg_ghc);
 518
 519                 if (is_buggy250(jme->pdev->device, jme->chiprev)) {
 520                         jme->reg_gpreg1 &= ~(GPREG1_HALFMODEPATCH |
 521                                              GPREG1_RSSPATCH);
 522                         if (!(phylink & PHY_LINK_DUPLEX))
 523                                 jme->reg_gpreg1 |= GPREG1_HALFMODEPATCH;
 524                         switch (phylink & PHY_LINK_SPEED_MASK) {
 525                         case PHY_LINK_SPEED_10M:
 526                                 jme_set_phyfifo_8level(jme);
 527                                 jme->reg_gpreg1 |= GPREG1_RSSPATCH;
 528                                 break;
 529                         case PHY_LINK_SPEED_100M:
 530                                 jme_set_phyfifo_5level(jme);
 531                                 jme->reg_gpreg1 |= GPREG1_RSSPATCH;
 532                                 break;
 533                         case PHY_LINK_SPEED_1000M:
 534                                 jme_set_phyfifo_8level(jme);
 535                                 break;
 536                         default:
 537                                 break;
 538                         }
 539                 }
 540                 jwrite32(jme, JME_GPREG1, jme->reg_gpreg1);
 541
 542                 strcat(linkmsg, (phylink & PHY_LINK_DUPLEX) ?
 543                                         "Full-Duplex, " :
 544                                         "Half-Duplex, ");
 545                 strcat(linkmsg, (phylink & PHY_LINK_MDI_STAT) ?
 546                                         "MDI-X" :
 547                                         "MDI");
 548                 netif_info(jme, link, jme->dev, "Link is up at %s\n", linkmsg);
 549                 netif_carrier_on(netdev);
 550         } else {
 551                 if (testonly)
 552                         goto out;
 553
 554                 netif_info(jme, link, jme->dev, "Link is down\n");
 555                 jme->phylink = 0;
 556                 netif_carrier_off(netdev);
 557         }
 558
 559 out:
 560         return rc;
 561 }
 562
 563 static int
 564 jme_setup_tx_resources(struct jme_adapter *jme)
 565 {
 566         struct jme_ring *txring = &(jme->txring[0]);
 567
 568         txring->alloc = dma_alloc_coherent(&(jme->pdev->dev),
 569                                    TX_RING_ALLOC_SIZE(jme->tx_ring_size),
 570                                    &(txring->dmaalloc),
 571                                    GFP_ATOMIC);
 572
 573         if (!txring->alloc)
 574                 goto err_set_null;
 575
 576         /*
 577          * 16 Bytes align
 578          */
 579         txring->desc            = (void *)ALIGN((unsigned long)(txring->alloc),
 580                                                 RING_DESC_ALIGN);
 581         txring->dma             = ALIGN(txring->dmaalloc, RING_DESC_ALIGN);
 582         txring->next_to_use     = 0;
 583         atomic_set(&txring->next_to_clean, 0);
 584         atomic_set(&txring->nr_free, jme->tx_ring_size);
 585
 586         txring->bufinf          = kmalloc(sizeof(struct jme_buffer_info) *
 587                                         jme->tx_ring_size, GFP_ATOMIC);
 588         if (unlikely(!(txring->bufinf)))
 589                 goto err_free_txring;
 590
 591         /*
 592          * Initialize Transmit Descriptors
 593          */
 594         memset(txring->alloc, 0, TX_RING_ALLOC_SIZE(jme->tx_ring_size));
 595         memset(txring->bufinf, 0,
 596                 sizeof(struct jme_buffer_info) * jme->tx_ring_size);
 597
 598         return 0;
 599
 600 err_free_txring:
 601         dma_free_coherent(&(jme->pdev->dev),
 602                           TX_RING_ALLOC_SIZE(jme->tx_ring_size),
 603                           txring->alloc,
 604                           txring->dmaalloc);
 605
 606 err_set_null:
 607         txring->desc = NULL;
 608         txring->dmaalloc = 0;
 609         txring->dma = 0;
 610         txring->bufinf = NULL;
 611
 612         return -ENOMEM;
 613 }
 614
 615 static void
 616 jme_free_tx_resources(struct jme_adapter *jme)
 617 {
 618         int i;
 619         struct jme_ring *txring = &(jme->txring[0]);
 620         struct jme_buffer_info *txbi;
 621
 622         if (txring->alloc) {
 623                 if (txring->bufinf) {
 624                         for (i = 0 ; i < jme->tx_ring_size ; ++i) {
 625                                 txbi = txring->bufinf + i;
 626                                 if (txbi->skb) {
 627                                         dev_kfree_skb(txbi->skb);
 628                                         txbi->skb = NULL;
 629                                 }
 630                                 txbi->mapping           = 0;
 631                                 txbi->len               = 0;
 632                                 txbi->nr_desc           = 0;
 633                                 txbi->start_xmit        = 0;
 634                         }
 635                         kfree(txring->bufinf);
 636                 }
 637
 638                 dma_free_coherent(&(jme->pdev->dev),
 639                                   TX_RING_ALLOC_SIZE(jme->tx_ring_size),
 640                                   txring->alloc,
 641                                   txring->dmaalloc);
 642
 643                 txring->alloc           = NULL;
 644                 txring->desc            = NULL;
 645                 txring->dmaalloc        = 0;
 646                 txring->dma             = 0;
 647                 txring->bufinf          = NULL;
 648         }
 649         txring->next_to_use     = 0;
 650         atomic_set(&txring->next_to_clean, 0);
 651         atomic_set(&txring->nr_free, 0);
 652 }
 653
 654 static inline void
 655 jme_enable_tx_engine(struct jme_adapter *jme)
 656 {
 657         /*
 658          * Select Queue 0
 659          */
 660         jwrite32(jme, JME_TXCS, TXCS_DEFAULT | TXCS_SELECT_QUEUE0);
 661         wmb();
 662
 663         /*
 664          * Setup TX Queue 0 DMA Bass Address
 665          */
 666         jwrite32(jme, JME_TXDBA_LO, (__u64)jme->txring[0].dma & 0xFFFFFFFFUL);
 667         jwrite32(jme, JME_TXDBA_HI, (__u64)(jme->txring[0].dma) >> 32);
 668         jwrite32(jme, JME_TXNDA, (__u64)jme->txring[0].dma & 0xFFFFFFFFUL);
 669
 670         /*
 671          * Setup TX Descptor Count
 672          */
 673         jwrite32(jme, JME_TXQDC, jme->tx_ring_size);
 674
 675         /*
 676          * Enable TX Engine
 677          */
 678         wmb();
 679         jwrite32f(jme, JME_TXCS, jme->reg_txcs |
 680                                 TXCS_SELECT_QUEUE0 |
 681                                 TXCS_ENABLE);
 682
 683         /*
 684          * Start clock for TX MAC Processor
 685          */
 686         jme_mac_txclk_on(jme);
 687 }
 688
 689 static inline void
 690 jme_restart_tx_engine(struct jme_adapter *jme)
 691 {
 692         /*
 693          * Restart TX Engine
 694          */
 695         jwrite32(jme, JME_TXCS, jme->reg_txcs |
 696                                 TXCS_SELECT_QUEUE0 |
 697                                 TXCS_ENABLE);
 698 }
 699
 700 static inline void
 701 jme_disable_tx_engine(struct jme_adapter *jme)
 702 {
 703         int i;
 704         u32 val;
 705
 706         /*
 707          * Disable TX Engine
 708          */
 709         jwrite32(jme, JME_TXCS, jme->reg_txcs | TXCS_SELECT_QUEUE0);
 710         wmb();
 711
 712         val = jread32(jme, JME_TXCS);
 713         for (i = JME_TX_DISABLE_TIMEOUT ; (val & TXCS_ENABLE) && i > 0 ; --i) {
 714                 mdelay(1);
 715                 val = jread32(jme, JME_TXCS);
 716                 rmb();
 717         }
 718
 719         if (!i)
 720                 pr_err("Disable TX engine timeout\n");
 721
 722         /*
 723          * Stop clock for TX MAC Processor
 724          */
 725         jme_mac_txclk_off(jme);
 726 }
 727
 728 static void
 729 jme_set_clean_rxdesc(struct jme_adapter *jme, int i)
 730 {
 731         struct jme_ring *rxring = &(jme->rxring[0]);
 732         register struct rxdesc *rxdesc = rxring->desc;
 733         struct jme_buffer_info *rxbi = rxring->bufinf;
 734         rxdesc += i;
 735         rxbi += i;
 736
 737         rxdesc->dw[0] = 0;
 738         rxdesc->dw[1] = 0;
 739         rxdesc->desc1.bufaddrh  = cpu_to_le32((__u64)rxbi->mapping >> 32);
 740         rxdesc->desc1.bufaddrl  = cpu_to_le32(
 741                                         (__u64)rxbi->mapping & 0xFFFFFFFFUL);
 742         rxdesc->desc1.datalen   = cpu_to_le16(rxbi->len);
 743         if (jme->dev->features & NETIF_F_HIGHDMA)
 744                 rxdesc->desc1.flags = RXFLAG_64BIT;
 745         wmb();
 746         rxdesc->desc1.flags     |= RXFLAG_OWN | RXFLAG_INT;
 747 }
 748
 749 static int
 750 jme_make_new_rx_buf(struct jme_adapter *jme, int i)
 751 {
 752         struct jme_ring *rxring = &(jme->rxring[0]);
 753         struct jme_buffer_info *rxbi = rxring->bufinf + i;
 754         struct sk_buff *skb;
 755         dma_addr_t mapping;
 756
 757         skb = netdev_alloc_skb(jme->dev,
 758                 jme->dev->mtu + RX_EXTRA_LEN);
 759         if (unlikely(!skb))
 760                 return -ENOMEM;
 761
 762         mapping = pci_map_page(jme->pdev, virt_to_page(skb->data),
 763                                offset_in_page(skb->data), skb_tailroom(skb),
 764                                PCI_DMA_FROMDEVICE);
 765         if (unlikely(pci_dma_mapping_error(jme->pdev, mapping))) {
 766                 dev_kfree_skb(skb);
 767                 return -ENOMEM;
 768         }
 769
 770         if (likely(rxbi->mapping))
 771                 pci_unmap_page(jme->pdev, rxbi->mapping,
 772                                rxbi->len, PCI_DMA_FROMDEVICE);
 773
 774         rxbi->skb = skb;
 775         rxbi->len = skb_tailroom(skb);
 776         rxbi->mapping = mapping;
 777         return 0;
 778 }
 779
 780 static void
 781 jme_free_rx_buf(struct jme_adapter *jme, int i)
 782 {
 783         struct jme_ring *rxring = &(jme->rxring[0]);
 784         struct jme_buffer_info *rxbi = rxring->bufinf;
 785         rxbi += i;
 786
 787         if (rxbi->skb) {
 788                 pci_unmap_page(jme->pdev,
 789                                  rxbi->mapping,
 790                                  rxbi->len,
 791                                  PCI_DMA_FROMDEVICE);
 792                 dev_kfree_skb(rxbi->skb);
 793                 rxbi->skb = NULL;
 794                 rxbi->mapping = 0;
 795                 rxbi->len = 0;
 796         }
 797 }
 798
 799 static void
 800 jme_free_rx_resources(struct jme_adapter *jme)
 801 {
 802         int i;
 803         struct jme_ring *rxring = &(jme->rxring[0]);
 804
 805         if (rxring->alloc) {
 806                 if (rxring->bufinf) {
 807                         for (i = 0 ; i < jme->rx_ring_size ; ++i)
 808                                 jme_free_rx_buf(jme, i);
 809                         kfree(rxring->bufinf);
 810                 }
 811
 812                 dma_free_coherent(&(jme->pdev->dev),
 813                                   RX_RING_ALLOC_SIZE(jme->rx_ring_size),
 814                                   rxring->alloc,
 815                                   rxring->dmaalloc);
 816                 rxring->alloc    = NULL;
 817                 rxring->desc     = NULL;
 818                 rxring->dmaalloc = 0;
 819                 rxring->dma      = 0;
 820                 rxring->bufinf   = NULL;
 821         }
 822         rxring->next_to_use   = 0;
 823         atomic_set(&rxring->next_to_clean, 0);
 824 }
 825
 826 static int
 827 jme_setup_rx_resources(struct jme_adapter *jme)
 828 {
 829         int i;
 830         struct jme_ring *rxring = &(jme->rxring[0]);
 831
 832         rxring->alloc = dma_alloc_coherent(&(jme->pdev->dev),
 833                                    RX_RING_ALLOC_SIZE(jme->rx_ring_size),
 834                                    &(rxring->dmaalloc),
 835                                    GFP_ATOMIC);
 836         if (!rxring->alloc)
 837                 goto err_set_null;
 838
 839         /*
 840          * 16 Bytes align
 841          */
 842         rxring->desc            = (void *)ALIGN((unsigned long)(rxring->alloc),
 843                                                 RING_DESC_ALIGN);
 844         rxring->dma             = ALIGN(rxring->dmaalloc, RING_DESC_ALIGN);
 845         rxring->next_to_use     = 0;
 846         atomic_set(&rxring->next_to_clean, 0);
 847
 848         rxring->bufinf          = kmalloc(sizeof(struct jme_buffer_info) *
 849                                         jme->rx_ring_size, GFP_ATOMIC);
 850         if (unlikely(!(rxring->bufinf)))
 851                 goto err_free_rxring;
 852
 853         /*
 854          * Initiallize Receive Descriptors
 855          */
 856         memset(rxring->bufinf, 0,
 857                 sizeof(struct jme_buffer_info) * jme->rx_ring_size);
 858         for (i = 0 ; i < jme->rx_ring_size ; ++i) {
 859                 if (unlikely(jme_make_new_rx_buf(jme, i))) {
 860                         jme_free_rx_resources(jme);
 861                         return -ENOMEM;
 862                 }
 863
 864                 jme_set_clean_rxdesc(jme, i);
 865         }
 866
 867         return 0;
 868
 869 err_free_rxring:
 870         dma_free_coherent(&(jme->pdev->dev),
 871                           RX_RING_ALLOC_SIZE(jme->rx_ring_size),
 872                           rxring->alloc,
 873                           rxring->dmaalloc);
 874 err_set_null:
 875         rxring->desc = NULL;
 876         rxring->dmaalloc = 0;
 877         rxring->dma = 0;
 878         rxring->bufinf = NULL;
 879
 880         return -ENOMEM;
 881 }
 882
 883 static inline void
 884 jme_enable_rx_engine(struct jme_adapter *jme)
 885 {
 886         /*
 887          * Select Queue 0
 888          */
 889         jwrite32(jme, JME_RXCS, jme->reg_rxcs |
 890                                 RXCS_QUEUESEL_Q0);
 891         wmb();
 892
 893         /*
 894          * Setup RX DMA Bass Address
 895          */
 896         jwrite32(jme, JME_RXDBA_LO, (__u64)(jme->rxring[0].dma) & 0xFFFFFFFFUL);
 897         jwrite32(jme, JME_RXDBA_HI, (__u64)(jme->rxring[0].dma) >> 32);
 898         jwrite32(jme, JME_RXNDA, (__u64)(jme->rxring[0].dma) & 0xFFFFFFFFUL);
 899
 900         /*
 901          * Setup RX Descriptor Count
 902          */
 903         jwrite32(jme, JME_RXQDC, jme->rx_ring_size);
 904
 905         /*
 906          * Setup Unicast Filter
 907          */
 908         jme_set_unicastaddr(jme->dev);
 909         jme_set_multi(jme->dev);
 910
 911         /*
 912          * Enable RX Engine
 913          */
 914         wmb();
 915         jwrite32f(jme, JME_RXCS, jme->reg_rxcs |
 916                                 RXCS_QUEUESEL_Q0 |
 917                                 RXCS_ENABLE |
 918                                 RXCS_QST);
 919
 920         /*
 921          * Start clock for RX MAC Processor
 922          */
 923         jme_mac_rxclk_on(jme);
 924 }
 925
 926 static inline void
 927 jme_restart_rx_engine(struct jme_adapter *jme)
 928 {
 929         /*
 930          * Start RX Engine
 931          */
 932         jwrite32(jme, JME_RXCS, jme->reg_rxcs |
 933                                 RXCS_QUEUESEL_Q0 |
 934                                 RXCS_ENABLE |
 935                                 RXCS_QST);
 936 }
 937
 938 static inline void
 939 jme_disable_rx_engine(struct jme_adapter *jme)
 940 {
 941         int i;
 942         u32 val;
 943
 944         /*
 945          * Disable RX Engine
 946          */
 947         jwrite32(jme, JME_RXCS, jme->reg_rxcs);
 948         wmb();
 949
 950         val = jread32(jme, JME_RXCS);
 951         for (i = JME_RX_DISABLE_TIMEOUT ; (val & RXCS_ENABLE) && i > 0 ; --i) {
 952                 mdelay(1);
 953                 val = jread32(jme, JME_RXCS);
 954                 rmb();
 955         }
 956
 957         if (!i)
 958                 pr_err("Disable RX engine timeout\n");
 959
 960         /*
 961          * Stop clock for RX MAC Processor
 962          */
 963         jme_mac_rxclk_off(jme);
 964 }
 965
 966 static u16
 967 jme_udpsum(struct sk_buff *skb)
 968 {
 969         u16 csum = 0xFFFFu;
 970
 971         if (skb->len < (ETH_HLEN + sizeof(struct iphdr)))
 972                 return csum;
 973         if (skb->protocol != htons(ETH_P_IP))
 974                 return csum;
 975         skb_set_network_header(skb, ETH_HLEN);
 976         if ((ip_hdr(skb)->protocol != IPPROTO_UDP) ||
 977             (skb->len < (ETH_HLEN +
 978                         (ip_hdr(skb)->ihl << 2) +
 979                         sizeof(struct udphdr)))) {
 980                 skb_reset_network_header(skb);
 981                 return csum;
 982         }
 983         skb_set_transport_header(skb,
 984                         ETH_HLEN + (ip_hdr(skb)->ihl << 2));
 985         csum = udp_hdr(skb)->check;
 986         skb_reset_transport_header(skb);
 987         skb_reset_network_header(skb);
 988
 989         return csum;
 990 }
 991
 992 static int
 993 jme_rxsum_ok(struct jme_adapter *jme, u16 flags, struct sk_buff *skb)
 994 {
 995         if (!(flags & (RXWBFLAG_TCPON | RXWBFLAG_UDPON | RXWBFLAG_IPV4)))
 996                 return false;
 997
 998         if (unlikely((flags & (RXWBFLAG_MF | RXWBFLAG_TCPON | RXWBFLAG_TCPCS))
 999                         == RXWBFLAG_TCPON)) {
1000                 if (flags & RXWBFLAG_IPV4)
1001                         netif_err(jme, rx_err, jme->dev, "TCP Checksum error\n");
1002                 return false;
1003         }
1004
1005         if (unlikely((flags & (RXWBFLAG_MF | RXWBFLAG_UDPON | RXWBFLAG_UDPCS))
1006                         == RXWBFLAG_UDPON) && jme_udpsum(skb)) {
1007                 if (flags & RXWBFLAG_IPV4)
1008                         netif_err(jme, rx_err, jme->dev, "UDP Checksum error\n");
1009                 return false;
1010         }
1011
1012         if (unlikely((flags & (RXWBFLAG_IPV4 | RXWBFLAG_IPCS))
1013                         == RXWBFLAG_IPV4)) {
1014                 netif_err(jme, rx_err, jme->dev, "IPv4 Checksum error\n");
1015                 return false;
1016         }
1017
1018         return true;
1019 }
1020
1021 static void
1022 jme_alloc_and_feed_skb(struct jme_adapter *jme, int idx)
1023 {
1024         struct jme_ring *rxring = &(jme->rxring[0]);
1025         struct rxdesc *rxdesc = rxring->desc;
1026         struct jme_buffer_info *rxbi = rxring->bufinf;
1027         struct sk_buff *skb;
1028         int framesize;
1029
1030         rxdesc += idx;
1031         rxbi += idx;
1032
1033         skb = rxbi->skb;
1034         pci_dma_sync_single_for_cpu(jme->pdev,
1035                                         rxbi->mapping,
1036                                         rxbi->len,
1037                                         PCI_DMA_FROMDEVICE);
1038
1039         if (unlikely(jme_make_new_rx_buf(jme, idx))) {
1040                 pci_dma_sync_single_for_device(jme->pdev,
1041                                                 rxbi->mapping,
1042                                                 rxbi->len,
1043                                                 PCI_DMA_FROMDEVICE);
1044
1045                 ++(NET_STAT(jme).rx_dropped);
1046         } else {
1047                 framesize = le16_to_cpu(rxdesc->descwb.framesize)
1048                                 - RX_PREPAD_SIZE;
1049
1050                 skb_reserve(skb, RX_PREPAD_SIZE);
1051                 skb_put(skb, framesize);
1052                 skb->protocol = eth_type_trans(skb, jme->dev);
1053
1054                 if (jme_rxsum_ok(jme, le16_to_cpu(rxdesc->descwb.flags), skb))
1055                         skb->ip_summed = CHECKSUM_UNNECESSARY;
1056                 else
1057                         skb_checksum_none_assert(skb);
1058
1059                 if (rxdesc->descwb.flags & cpu_to_le16(RXWBFLAG_TAGON)) {
1060                         u16 vid = le16_to_cpu(rxdesc->descwb.vlan);
1061
1062                         __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid);
1063                         NET_STAT(jme).rx_bytes += 4;
1064                 }
1065                 jme->jme_rx(skb);
1066
1067                 if ((rxdesc->descwb.flags & cpu_to_le16(RXWBFLAG_DEST)) ==
1068                     cpu_to_le16(RXWBFLAG_DEST_MUL))
1069                         ++(NET_STAT(jme).multicast);
1070
1071                 NET_STAT(jme).rx_bytes += framesize;
1072                 ++(NET_STAT(jme).rx_packets);
1073         }
1074
1075         jme_set_clean_rxdesc(jme, idx);
1076
1077 }
1078
1079 static int
1080 jme_process_receive(struct jme_adapter *jme, int limit)
1081 {
1082         struct jme_ring *rxring = &(jme->rxring[0]);
1083         struct rxdesc *rxdesc = rxring->desc;
1084         int i, j, ccnt, desccnt, mask = jme->rx_ring_mask;
1085
1086         if (unlikely(!atomic_dec_and_test(&jme->rx_cleaning)))
1087                 goto out_inc;
1088
1089         if (unlikely(atomic_read(&jme->link_changing) != 1))
1090                 goto out_inc;
1091
1092         if (unlikely(!netif_carrier_ok(jme->dev)))
1093                 goto out_inc;
1094
1095         i = atomic_read(&rxring->next_to_clean);
1096         while (limit > 0) {
1097                 rxdesc = rxring->desc;
1098                 rxdesc += i;
1099
1100                 if ((rxdesc->descwb.flags & cpu_to_le16(RXWBFLAG_OWN)) ||
1101                 !(rxdesc->descwb.desccnt & RXWBDCNT_WBCPL))
1102                         goto out;
1103                 --limit;
1104
1105                 rmb();
1106                 desccnt = rxdesc->descwb.desccnt & RXWBDCNT_DCNT;
1107
1108                 if (unlikely(desccnt > 1 ||
1109                 rxdesc->descwb.errstat & RXWBERR_ALLERR)) {
1110
1111                         if (rxdesc->descwb.errstat & RXWBERR_CRCERR)
1112                                 ++(NET_STAT(jme).rx_crc_errors);
1113                         else if (rxdesc->descwb.errstat & RXWBERR_OVERUN)
1114                                 ++(NET_STAT(jme).rx_fifo_errors);
1115                         else
1116                                 ++(NET_STAT(jme).rx_errors);
1117
1118                         if (desccnt > 1)
1119                                 limit -= desccnt - 1;
1120
1121                         for (j = i, ccnt = desccnt ; ccnt-- ; ) {
1122                                 jme_set_clean_rxdesc(jme, j);
1123                                 j = (j + 1) & (mask);
1124                         }
1125
1126                 } else {
1127                         jme_alloc_and_feed_skb(jme, i);
1128                 }
1129
1130                 i = (i + desccnt) & (mask);
1131         }
1132
1133 out:
1134         atomic_set(&rxring->next_to_clean, i);
1135
1136 out_inc:
1137         atomic_inc(&jme->rx_cleaning);
1138
1139         return limit > 0 ? limit : 0;
1140
1141 }
1142
1143 static void
1144 jme_attempt_pcc(struct dynpcc_info *dpi, int atmp)
1145 {
1146         if (likely(atmp == dpi->cur)) {
1147                 dpi->cnt = 0;
1148                 return;
1149         }
1150
1151         if (dpi->attempt == atmp) {
1152                 ++(dpi->cnt);
1153         } else {
1154                 dpi->attempt = atmp;
1155                 dpi->cnt = 0;
1156         }
1157
1158 }
1159
1160 static void
1161 jme_dynamic_pcc(struct jme_adapter *jme)
1162 {
1163         register struct dynpcc_info *dpi = &(jme->dpi);
1164
1165         if ((NET_STAT(jme).rx_bytes - dpi->last_bytes) > PCC_P3_THRESHOLD)
1166                 jme_attempt_pcc(dpi, PCC_P3);
1167         else if ((NET_STAT(jme).rx_packets - dpi->last_pkts) > PCC_P2_THRESHOLD ||
1168                  dpi->intr_cnt > PCC_INTR_THRESHOLD)
1169                 jme_attempt_pcc(dpi, PCC_P2);
1170         else
1171                 jme_attempt_pcc(dpi, PCC_P1);
1172
1173         if (unlikely(dpi->attempt != dpi->cur && dpi->cnt > 5)) {
1174                 if (dpi->attempt < dpi->cur)
1175                         tasklet_schedule(&jme->rxclean_task);
1176                 jme_set_rx_pcc(jme, dpi->attempt);
1177                 dpi->cur = dpi->attempt;
1178                 dpi->cnt = 0;
1179         }
1180 }
1181
1182 static void
1183 jme_start_pcc_timer(struct jme_adapter *jme)
1184 {
1185         struct dynpcc_info *dpi = &(jme->dpi);
1186         dpi->last_bytes         = NET_STAT(jme).rx_bytes;
1187         dpi->last_pkts          = NET_STAT(jme).rx_packets;
1188         dpi->intr_cnt           = 0;
1189         jwrite32(jme, JME_TMCSR,
1190                 TMCSR_EN | ((0xFFFFFF - PCC_INTERVAL_US) & TMCSR_CNT));
1191 }
1192
1193 static inline void
1194 jme_stop_pcc_timer(struct jme_adapter *jme)
1195 {
1196         jwrite32(jme, JME_TMCSR, 0);
1197 }
1198
1199 static void
1200 jme_shutdown_nic(struct jme_adapter *jme)
1201 {
1202         u32 phylink;
1203
1204         phylink = jme_linkstat_from_phy(jme);
1205
1206         if (!(phylink & PHY_LINK_UP)) {
1207                 /*
1208                  * Disable all interrupt before issue timer
1209                  */
1210                 jme_stop_irq(jme);
1211                 jwrite32(jme, JME_TIMER2, TMCSR_EN | 0xFFFFFE);
1212         }
1213 }
1214
1215 static void
1216 jme_pcc_tasklet(unsigned long arg)
1217 {
1218         struct jme_adapter *jme = (struct jme_adapter *)arg;
1219         struct net_device *netdev = jme->dev;
1220
1221         if (unlikely(test_bit(JME_FLAG_SHUTDOWN, &jme->flags))) {
1222                 jme_shutdown_nic(jme);
1223                 return;
1224         }
1225
1226         if (unlikely(!netif_carrier_ok(netdev) ||
1227                 (atomic_read(&jme->link_changing) != 1)
1228         )) {
1229                 jme_stop_pcc_timer(jme);
1230                 return;
1231         }
1232
1233         if (!(test_bit(JME_FLAG_POLL, &jme->flags)))
1234                 jme_dynamic_pcc(jme);
1235
1236         jme_start_pcc_timer(jme);
1237 }
1238
1239 static inline void
1240 jme_polling_mode(struct jme_adapter *jme)
1241 {
1242         jme_set_rx_pcc(jme, PCC_OFF);
1243 }
1244
1245 static inline void
1246 jme_interrupt_mode(struct jme_adapter *jme)
1247 {
1248         jme_set_rx_pcc(jme, PCC_P1);
1249 }
1250
1251 static inline int
1252 jme_pseudo_hotplug_enabled(struct jme_adapter *jme)
1253 {
1254         u32 apmc;
1255         apmc = jread32(jme, JME_APMC);
1256         return apmc & JME_APMC_PSEUDO_HP_EN;
1257 }
1258
1259 static void
1260 jme_start_shutdown_timer(struct jme_adapter *jme)
1261 {
1262         u32 apmc;
1263
1264         apmc = jread32(jme, JME_APMC) | JME_APMC_PCIE_SD_EN;
1265         apmc &= ~JME_APMC_EPIEN_CTRL;
1266         if (!no_extplug) {
1267                 jwrite32f(jme, JME_APMC, apmc | JME_APMC_EPIEN_CTRL_EN);
1268                 wmb();
1269         }
1270         jwrite32f(jme, JME_APMC, apmc);
1271
1272         jwrite32f(jme, JME_TIMER2, 0);
1273         set_bit(JME_FLAG_SHUTDOWN, &jme->flags);
1274         jwrite32(jme, JME_TMCSR,
1275                 TMCSR_EN | ((0xFFFFFF - APMC_PHP_SHUTDOWN_DELAY) & TMCSR_CNT));
1276 }
1277
1278 static void
1279 jme_stop_shutdown_timer(struct jme_adapter *jme)
1280 {
1281         u32 apmc;
1282
1283         jwrite32f(jme, JME_TMCSR, 0);
1284         jwrite32f(jme, JME_TIMER2, 0);
1285         clear_bit(JME_FLAG_SHUTDOWN, &jme->flags);
1286
1287         apmc = jread32(jme, JME_APMC);
1288         apmc &= ~(JME_APMC_PCIE_SD_EN | JME_APMC_EPIEN_CTRL);
1289         jwrite32f(jme, JME_APMC, apmc | JME_APMC_EPIEN_CTRL_DIS);
1290         wmb();
1291         jwrite32f(jme, JME_APMC, apmc);
1292 }
1293
1294 static void
1295 jme_link_change_tasklet(unsigned long arg)
1296 {
1297         struct jme_adapter *jme = (struct jme_adapter *)arg;
1298         struct net_device *netdev = jme->dev;
1299         int rc;
1300
1301         while (!atomic_dec_and_test(&jme->link_changing)) {
1302                 atomic_inc(&jme->link_changing);
1303                 netif_info(jme, intr, jme->dev, "Get link change lock failed\n");
1304                 while (atomic_read(&jme->link_changing) != 1)
1305                         netif_info(jme, intr, jme->dev, "Waiting link change lock\n");
1306         }
1307
1308         if (jme_check_link(netdev, 1) && jme->old_mtu == netdev->mtu)
1309                 goto out;
1310
1311         jme->old_mtu = netdev->mtu;
1312         netif_stop_queue(netdev);
1313         if (jme_pseudo_hotplug_enabled(jme))
1314                 jme_stop_shutdown_timer(jme);
1315
1316         jme_stop_pcc_timer(jme);
1317         tasklet_disable(&jme->txclean_task);
1318         tasklet_disable(&jme->rxclean_task);
1319         tasklet_disable(&jme->rxempty_task);
1320
1321         if (netif_carrier_ok(netdev)) {
1322                 jme_disable_rx_engine(jme);
1323                 jme_disable_tx_engine(jme);
1324                 jme_reset_mac_processor(jme);
1325                 jme_free_rx_resources(jme);
1326                 jme_free_tx_resources(jme);
1327
1328                 if (test_bit(JME_FLAG_POLL, &jme->flags))
1329                         jme_polling_mode(jme);
1330
1331                 netif_carrier_off(netdev);
1332         }
1333
1334         jme_check_link(netdev, 0);
1335         if (netif_carrier_ok(netdev)) {
1336                 rc = jme_setup_rx_resources(jme);
1337                 if (rc) {
1338                         pr_err("Allocating resources for RX error, Device STOPPED!\n");
1339                         goto out_enable_tasklet;
1340                 }
1341
1342                 rc = jme_setup_tx_resources(jme);
1343                 if (rc) {
1344                         pr_err("Allocating resources for TX error, Device STOPPED!\n");
1345                         goto err_out_free_rx_resources;
1346                 }
1347
1348                 jme_enable_rx_engine(jme);
1349                 jme_enable_tx_engine(jme);
1350
1351                 netif_start_queue(netdev);
1352
1353                 if (test_bit(JME_FLAG_POLL, &jme->flags))
1354                         jme_interrupt_mode(jme);
1355
1356                 jme_start_pcc_timer(jme);
1357         } else if (jme_pseudo_hotplug_enabled(jme)) {
1358                 jme_start_shutdown_timer(jme);
1359         }
1360
1361         goto out_enable_tasklet;
1362
1363 err_out_free_rx_resources:
1364         jme_free_rx_resources(jme);
1365 out_enable_tasklet:
1366         tasklet_enable(&jme->txclean_task);
1367         tasklet_hi_enable(&jme->rxclean_task);
1368         tasklet_hi_enable(&jme->rxempty_task);
1369 out:
1370         atomic_inc(&jme->link_changing);
1371 }
1372
1373 static void
1374 jme_rx_clean_tasklet(unsigned long arg)
1375 {
1376         struct jme_adapter *jme = (struct jme_adapter *)arg;
1377         struct dynpcc_info *dpi = &(jme->dpi);
1378
1379         jme_process_receive(jme, jme->rx_ring_size);
1380         ++(dpi->intr_cnt);
1381
1382 }
1383
1384 static int
1385 jme_poll(JME_NAPI_HOLDER(holder), JME_NAPI_WEIGHT(budget))
1386 {
1387         struct jme_adapter *jme = jme_napi_priv(holder);
1388         int rest;
1389
1390         rest = jme_process_receive(jme, JME_NAPI_WEIGHT_VAL(budget));
1391
1392         while (atomic_read(&jme->rx_empty) > 0) {
1393                 atomic_dec(&jme->rx_empty);
1394                 ++(NET_STAT(jme).rx_dropped);
1395                 jme_restart_rx_engine(jme);
1396         }
1397         atomic_inc(&jme->rx_empty);
1398
1399         if (rest) {
1400                 JME_RX_COMPLETE(netdev, holder);
1401                 jme_interrupt_mode(jme);
1402         }
1403
1404         JME_NAPI_WEIGHT_SET(budget, rest);
1405         return JME_NAPI_WEIGHT_VAL(budget) - rest;
1406 }
1407
1408 static void
1409 jme_rx_empty_tasklet(unsigned long arg)
1410 {
1411         struct jme_adapter *jme = (struct jme_adapter *)arg;
1412
1413         if (unlikely(atomic_read(&jme->link_changing) != 1))
1414                 return;
1415
1416         if (unlikely(!netif_carrier_ok(jme->dev)))
1417                 return;
1418
1419         netif_info(jme, rx_status, jme->dev, "RX Queue Full!\n");
1420
1421         jme_rx_clean_tasklet(arg);
1422
1423         while (atomic_read(&jme->rx_empty) > 0) {
1424                 atomic_dec(&jme->rx_empty);
1425                 ++(NET_STAT(jme).rx_dropped);
1426                 jme_restart_rx_engine(jme);
1427         }
1428         atomic_inc(&jme->rx_empty);
1429 }
1430
1431 static void
1432 jme_wake_queue_if_stopped(struct jme_adapter *jme)
1433 {
1434         struct jme_ring *txring = &(jme->txring[0]);
1435
1436         smp_wmb();
1437         if (unlikely(netif_queue_stopped(jme->dev) &&
1438         atomic_read(&txring->nr_free) >= (jme->tx_wake_threshold))) {
1439                 netif_info(jme, tx_done, jme->dev, "TX Queue Waked\n");
1440                 netif_wake_queue(jme->dev);
1441         }
1442
1443 }
1444
1445 static void
1446 jme_tx_clean_tasklet(unsigned long arg)
1447 {
1448         struct jme_adapter *jme = (struct jme_adapter *)arg;
1449         struct jme_ring *txring = &(jme->txring[0]);
1450         struct txdesc *txdesc = txring->desc;
1451         struct jme_buffer_info *txbi = txring->bufinf, *ctxbi, *ttxbi;
1452         int i, j, cnt = 0, max, err, mask;
1453
1454         tx_dbg(jme, "Into txclean\n");
1455
1456         if (unlikely(!atomic_dec_and_test(&jme->tx_cleaning)))
1457                 goto out;
1458
1459         if (unlikely(atomic_read(&jme->link_changing) != 1))
1460                 goto out;
1461
1462         if (unlikely(!netif_carrier_ok(jme->dev)))
1463                 goto out;
1464
1465         max = jme->tx_ring_size - atomic_read(&txring->nr_free);
1466         mask = jme->tx_ring_mask;
1467
1468         for (i = atomic_read(&txring->next_to_clean) ; cnt < max ; ) {
1469
1470                 ctxbi = txbi + i;
1471
1472                 if (likely(ctxbi->skb &&
1473                 !(txdesc[i].descwb.flags & TXWBFLAG_OWN))) {
1474
1475                         tx_dbg(jme, "txclean: %d+%d@%lu\n",
1476                                i, ctxbi->nr_desc, jiffies);
1477
1478                         err = txdesc[i].descwb.flags & TXWBFLAG_ALLERR;
1479
1480                         for (j = 1 ; j < ctxbi->nr_desc ; ++j) {
1481                                 ttxbi = txbi + ((i + j) & (mask));
1482                                 txdesc[(i + j) & (mask)].dw[0] = 0;
1483
1484                                 pci_unmap_page(jme->pdev,
1485                                                  ttxbi->mapping,
1486                                                  ttxbi->len,
1487                                                  PCI_DMA_TODEVICE);
1488
1489                                 ttxbi->mapping = 0;
1490                                 ttxbi->len = 0;
1491                         }
1492
1493                         dev_kfree_skb(ctxbi->skb);
1494
1495                         cnt += ctxbi->nr_desc;
1496
1497                         if (unlikely(err)) {
1498                                 ++(NET_STAT(jme).tx_carrier_errors);
1499                         } else {
1500                                 ++(NET_STAT(jme).tx_packets);
1501                                 NET_STAT(jme).tx_bytes += ctxbi->len;
1502                         }
1503
1504                         ctxbi->skb = NULL;
1505                         ctxbi->len = 0;
1506                         ctxbi->start_xmit = 0;
1507
1508                 } else {
1509                         break;
1510                 }
1511
1512                 i = (i + ctxbi->nr_desc) & mask;
1513
1514                 ctxbi->nr_desc = 0;
1515         }
1516
1517         tx_dbg(jme, "txclean: done %d@%lu\n", i, jiffies);
1518         atomic_set(&txring->next_to_clean, i);
1519         atomic_add(cnt, &txring->nr_free);
1520
1521         jme_wake_queue_if_stopped(jme);
1522
1523 out:
1524         atomic_inc(&jme->tx_cleaning);
1525 }
1526
1527 static void
1528 jme_intr_msi(struct jme_adapter *jme, u32 intrstat)
1529 {
1530         /*
1531          * Disable interrupt
1532          */
1533         jwrite32f(jme, JME_IENC, INTR_ENABLE);
1534
1535         if (intrstat & (INTR_LINKCH | INTR_SWINTR)) {
1536                 /*
1537                  * Link change event is critical
1538                  * all other events are ignored
1539                  */
1540                 jwrite32(jme, JME_IEVE, intrstat);
1541                 tasklet_schedule(&jme->linkch_task);
1542                 goto out_reenable;
1543         }
1544
1545         if (intrstat & INTR_TMINTR) {
1546                 jwrite32(jme, JME_IEVE, INTR_TMINTR);
1547                 tasklet_schedule(&jme->pcc_task);
1548         }
1549
1550         if (intrstat & (INTR_PCCTXTO | INTR_PCCTX)) {
1551                 jwrite32(jme, JME_IEVE, INTR_PCCTXTO | INTR_PCCTX | INTR_TX0);
1552                 tasklet_schedule(&jme->txclean_task);
1553         }
1554
1555         if ((intrstat & (INTR_PCCRX0TO | INTR_PCCRX0 | INTR_RX0EMP))) {
1556                 jwrite32(jme, JME_IEVE, (intrstat & (INTR_PCCRX0TO |
1557                                                      INTR_PCCRX0 |
1558                                                      INTR_RX0EMP)) |
1559                                         INTR_RX0);
1560         }
1561
1562         if (test_bit(JME_FLAG_POLL, &jme->flags)) {
1563                 if (intrstat & INTR_RX0EMP)
1564                         atomic_inc(&jme->rx_empty);
1565
1566                 if ((intrstat & (INTR_PCCRX0TO | INTR_PCCRX0 | INTR_RX0EMP))) {
1567                         if (likely(JME_RX_SCHEDULE_PREP(jme))) {
1568                                 jme_polling_mode(jme);
1569                                 JME_RX_SCHEDULE(jme);
1570                         }
1571                 }
1572         } else {
1573                 if (intrstat & INTR_RX0EMP) {
1574                         atomic_inc(&jme->rx_empty);
1575                         tasklet_hi_schedule(&jme->rxempty_task);
1576                 } else if (intrstat & (INTR_PCCRX0TO | INTR_PCCRX0)) {
1577                         tasklet_hi_schedule(&jme->rxclean_task);
1578                 }
1579         }
1580
1581 out_reenable:
1582         /*
1583          * Re-enable interrupt
1584          */
1585         jwrite32f(jme, JME_IENS, INTR_ENABLE);
1586 }
1587
1588 static irqreturn_t
1589 jme_intr(int irq, void *dev_id)
1590 {
1591         struct net_device *netdev = dev_id;
1592         struct jme_adapter *jme = netdev_priv(netdev);
1593         u32 intrstat;
1594
1595         intrstat = jread32(jme, JME_IEVE);
1596
1597         /*
1598          * Check if it's really an interrupt for us
1599          */
1600         if (unlikely((intrstat & INTR_ENABLE) == 0))
1601                 return IRQ_NONE;
1602
1603         /*
1604          * Check if the device still exist
1605          */
1606         if (unlikely(intrstat == ~((typeof(intrstat))0)))
1607                 return IRQ_NONE;
1608
1609         jme_intr_msi(jme, intrstat);
1610
1611         return IRQ_HANDLED;
1612 }
1613
1614 static irqreturn_t
1615 jme_msi(int irq, void *dev_id)
1616 {
1617         struct net_device *netdev = dev_id;
1618         struct jme_adapter *jme = netdev_priv(netdev);
1619         u32 intrstat;
1620
1621         intrstat = jread32(jme, JME_IEVE);
1622
1623         jme_intr_msi(jme, intrstat);
1624
1625         return IRQ_HANDLED;
1626 }
1627
1628 static void
1629 jme_reset_link(struct jme_adapter *jme)
1630 {
1631         jwrite32(jme, JME_TMCSR, TMCSR_SWIT);
1632 }
1633
1634 static void
1635 jme_restart_an(struct jme_adapter *jme)
1636 {
1637         u32 bmcr;
1638
1639         spin_lock_bh(&jme->phy_lock);
1640         bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
1641         bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
1642         jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, bmcr);
1643         spin_unlock_bh(&jme->phy_lock);
1644 }
1645
1646 static int
1647 jme_request_irq(struct jme_adapter *jme)
1648 {
1649         int rc;
1650         struct net_device *netdev = jme->dev;
1651         irq_handler_t handler = jme_intr;
1652         int irq_flags = IRQF_SHARED;
1653
1654         if (!pci_enable_msi(jme->pdev)) {
1655                 set_bit(JME_FLAG_MSI, &jme->flags);
1656                 handler = jme_msi;
1657                 irq_flags = 0;
1658         }
1659
1660         rc = request_irq(jme->pdev->irq, handler, irq_flags, netdev->name,
1661                           netdev);
1662         if (rc) {
1663                 netdev_err(netdev,
1664                            "Unable to request %s interrupt (return: %d)\n",
1665                            test_bit(JME_FLAG_MSI, &jme->flags) ? "MSI" : "INTx",
1666                            rc);
1667
1668                 if (test_bit(JME_FLAG_MSI, &jme->flags)) {
1669                         pci_disable_msi(jme->pdev);
1670                         clear_bit(JME_FLAG_MSI, &jme->flags);
1671                 }
1672         } else {
1673                 netdev->irq = jme->pdev->irq;
1674         }
1675
1676         return rc;
1677 }
1678
1679 static void
1680 jme_free_irq(struct jme_adapter *jme)
1681 {
1682         free_irq(jme->pdev->irq, jme->dev);
1683         if (test_bit(JME_FLAG_MSI, &jme->flags)) {
1684                 pci_disable_msi(jme->pdev);
1685                 clear_bit(JME_FLAG_MSI, &jme->flags);
1686                 jme->dev->irq = jme->pdev->irq;
1687         }
1688 }
1689
1690 static inline void
1691 jme_new_phy_on(struct jme_adapter *jme)
1692 {
1693         u32 reg;
1694
1695         reg = jread32(jme, JME_PHY_PWR);
1696         reg &= ~(PHY_PWR_DWN1SEL | PHY_PWR_DWN1SW |
1697                  PHY_PWR_DWN2 | PHY_PWR_CLKSEL);
1698         jwrite32(jme, JME_PHY_PWR, reg);
1699
1700         pci_read_config_dword(jme->pdev, PCI_PRIV_PE1, &reg);
1701         reg &= ~PE1_GPREG0_PBG;
1702         reg |= PE1_GPREG0_ENBG;
1703         pci_write_config_dword(jme->pdev, PCI_PRIV_PE1, reg);
1704 }
1705
1706 static inline void
1707 jme_new_phy_off(struct jme_adapter *jme)
1708 {
1709         u32 reg;
1710
1711         reg = jread32(jme, JME_PHY_PWR);
1712         reg |= PHY_PWR_DWN1SEL | PHY_PWR_DWN1SW |
1713                PHY_PWR_DWN2 | PHY_PWR_CLKSEL;
1714         jwrite32(jme, JME_PHY_PWR, reg);
1715
1716         pci_read_config_dword(jme->pdev, PCI_PRIV_PE1, &reg);
1717         reg &= ~PE1_GPREG0_PBG;
1718         reg |= PE1_GPREG0_PDD3COLD;
1719         pci_write_config_dword(jme->pdev, PCI_PRIV_PE1, reg);
1720 }
1721
1722 static inline void
1723 jme_phy_on(struct jme_adapter *jme)
1724 {
1725         u32 bmcr;
1726
1727         bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
1728         bmcr &= ~BMCR_PDOWN;
1729         jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, bmcr);
1730
1731         if (new_phy_power_ctrl(jme->chip_main_rev))
1732                 jme_new_phy_on(jme);
1733 }
1734
1735 static inline void
1736 jme_phy_off(struct jme_adapter *jme)
1737 {
1738         u32 bmcr;
1739
1740         bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
1741         bmcr |= BMCR_PDOWN;
1742         jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, bmcr);
1743
1744         if (new_phy_power_ctrl(jme->chip_main_rev))
1745                 jme_new_phy_off(jme);
1746 }
1747
1748 static int
1749 jme_phy_specreg_read(struct jme_adapter *jme, u32 specreg)
1750 {
1751         u32 phy_addr;
1752
1753         phy_addr = JM_PHY_SPEC_REG_READ | specreg;
1754         jme_mdio_write(jme->dev, jme->mii_if.phy_id, JM_PHY_SPEC_ADDR_REG,
1755                         phy_addr);
1756         return jme_mdio_read(jme->dev, jme->mii_if.phy_id,
1757                         JM_PHY_SPEC_DATA_REG);
1758 }
1759
1760 static void
1761 jme_phy_specreg_write(struct jme_adapter *jme, u32 ext_reg, u32 phy_data)
1762 {
1763         u32 phy_addr;
1764
1765         phy_addr = JM_PHY_SPEC_REG_WRITE | ext_reg;
1766         jme_mdio_write(jme->dev, jme->mii_if.phy_id, JM_PHY_SPEC_DATA_REG,
1767                         phy_data);
1768         jme_mdio_write(jme->dev, jme->mii_if.phy_id, JM_PHY_SPEC_ADDR_REG,
1769                         phy_addr);
1770 }
1771
1772 static int
1773 jme_phy_calibration(struct jme_adapter *jme)
1774 {
1775         u32 ctrl1000, phy_data;
1776
1777         jme_phy_off(jme);
1778         jme_phy_on(jme);
1779         /*  Enabel PHY test mode 1 */
1780         ctrl1000 = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_CTRL1000);
1781         ctrl1000 &= ~PHY_GAD_TEST_MODE_MSK;
1782         ctrl1000 |= PHY_GAD_TEST_MODE_1;
1783         jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_CTRL1000, ctrl1000);
1784
1785         phy_data = jme_phy_specreg_read(jme, JM_PHY_EXT_COMM_2_REG);
1786         phy_data &= ~JM_PHY_EXT_COMM_2_CALI_MODE_0;
1787         phy_data |= JM_PHY_EXT_COMM_2_CALI_LATCH |
1788                         JM_PHY_EXT_COMM_2_CALI_ENABLE;
1789         jme_phy_specreg_write(jme, JM_PHY_EXT_COMM_2_REG, phy_data);
1790         msleep(20);
1791         phy_data = jme_phy_specreg_read(jme, JM_PHY_EXT_COMM_2_REG);
1792         phy_data &= ~(JM_PHY_EXT_COMM_2_CALI_ENABLE |
1793                         JM_PHY_EXT_COMM_2_CALI_MODE_0 |
1794                         JM_PHY_EXT_COMM_2_CALI_LATCH);
1795         jme_phy_specreg_write(jme, JM_PHY_EXT_COMM_2_REG, phy_data);
1796
1797         /*  Disable PHY test mode */
1798         ctrl1000 = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_CTRL1000);
1799         ctrl1000 &= ~PHY_GAD_TEST_MODE_MSK;
1800         jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_CTRL1000, ctrl1000);
1801         return 0;
1802 }
1803
1804 static int
1805 jme_phy_setEA(struct jme_adapter *jme)
1806 {
1807         u32 phy_comm0 = 0, phy_comm1 = 0;
1808         u8 nic_ctrl;
1809
1810         pci_read_config_byte(jme->pdev, PCI_PRIV_SHARE_NICCTRL, &nic_ctrl);
1811         if ((nic_ctrl & 0x3) == JME_FLAG_PHYEA_ENABLE)
1812                 return 0;
1813
1814         switch (jme->pdev->device) {
1815         case PCI_DEVICE_ID_JMICRON_JMC250:
1816                 if (((jme->chip_main_rev == 5) &&
1817                         ((jme->chip_sub_rev == 0) || (jme->chip_sub_rev == 1) ||
1818                         (jme->chip_sub_rev == 3))) ||
1819                         (jme->chip_main_rev >= 6)) {
1820                         phy_comm0 = 0x008A;
1821                         phy_comm1 = 0x4109;
1822                 }
1823                 if ((jme->chip_main_rev == 3) &&
1824                         ((jme->chip_sub_rev == 1) || (jme->chip_sub_rev == 2)))
1825                         phy_comm0 = 0xE088;
1826                 break;
1827         case PCI_DEVICE_ID_JMICRON_JMC260:
1828                 if (((jme->chip_main_rev == 5) &&
1829                         ((jme->chip_sub_rev == 0) || (jme->chip_sub_rev == 1) ||
1830                         (jme->chip_sub_rev == 3))) ||
1831                         (jme->chip_main_rev >= 6)) {
1832                         phy_comm0 = 0x008A;
1833                         phy_comm1 = 0x4109;
1834                 }
1835                 if ((jme->chip_main_rev == 3) &&
1836                         ((jme->chip_sub_rev == 1) || (jme->chip_sub_rev == 2)))
1837                         phy_comm0 = 0xE088;
1838                 if ((jme->chip_main_rev == 2) && (jme->chip_sub_rev == 0))
1839                         phy_comm0 = 0x608A;
1840                 if ((jme->chip_main_rev == 2) && (jme->chip_sub_rev == 2))
1841                         phy_comm0 = 0x408A;
1842                 break;
1843         default:
1844                 return -ENODEV;
1845         }
1846         if (phy_comm0)
1847                 jme_phy_specreg_write(jme, JM_PHY_EXT_COMM_0_REG, phy_comm0);
1848         if (phy_comm1)
1849                 jme_phy_specreg_write(jme, JM_PHY_EXT_COMM_1_REG, phy_comm1);
1850
1851         return 0;
1852 }
1853
1854 static int
1855 jme_open(struct net_device *netdev)
1856 {
1857         struct jme_adapter *jme = netdev_priv(netdev);
1858         int rc;
1859
1860         jme_clear_pm(jme);
1861         JME_NAPI_ENABLE(jme);
1862
1863         tasklet_init(&jme->linkch_task, jme_link_change_tasklet,
1864                      (unsigned long) jme);
1865         tasklet_init(&jme->txclean_task, jme_tx_clean_tasklet,
1866                      (unsigned long) jme);
1867         tasklet_init(&jme->rxclean_task, jme_rx_clean_tasklet,
1868                      (unsigned long) jme);
1869         tasklet_init(&jme->rxempty_task, jme_rx_empty_tasklet,
1870                      (unsigned long) jme);
1871
1872         rc = jme_request_irq(jme);
1873         if (rc)
1874                 goto err_out;
1875
1876         jme_start_irq(jme);
1877
1878         jme_phy_on(jme);
1879         if (test_bit(JME_FLAG_SSET, &jme->flags))
1880                 jme_set_settings(netdev, &jme->old_ecmd);
1881         else
1882                 jme_reset_phy_processor(jme);
1883         jme_phy_calibration(jme);
1884         jme_phy_setEA(jme);
1885         jme_reset_link(jme);
1886
1887         return 0;
1888
1889 err_out:
1890         netif_stop_queue(netdev);
1891         netif_carrier_off(netdev);
1892         return rc;
1893 }
1894
1895 static void
1896 jme_set_100m_half(struct jme_adapter *jme)
1897 {
1898         u32 bmcr, tmp;
1899
1900         jme_phy_on(jme);
1901         bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
1902         tmp = bmcr & ~(BMCR_ANENABLE | BMCR_SPEED100 |
1903                        BMCR_SPEED1000 | BMCR_FULLDPLX);
1904         tmp |= BMCR_SPEED100;
1905
1906         if (bmcr != tmp)
1907                 jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, tmp);
1908
1909         if (jme->fpgaver)
1910                 jwrite32(jme, JME_GHC, GHC_SPEED_100M | GHC_LINK_POLL);
1911         else
1912                 jwrite32(jme, JME_GHC, GHC_SPEED_100M);
1913 }
1914
1915 #define JME_WAIT_LINK_TIME 2000 /* 2000ms */
1916 static void
1917 jme_wait_link(struct jme_adapter *jme)
1918 {
1919         u32 phylink, to = JME_WAIT_LINK_TIME;
1920
1921         mdelay(1000);
1922         phylink = jme_linkstat_from_phy(jme);
1923         while (!(phylink & PHY_LINK_UP) && (to -= 10) > 0) {
1924                 mdelay(10);
1925                 phylink = jme_linkstat_from_phy(jme);
1926         }
1927 }
1928
1929 static void
1930 jme_powersave_phy(struct jme_adapter *jme)
1931 {
1932         if (jme->reg_pmcs) {
1933                 jme_set_100m_half(jme);
1934                 if (jme->reg_pmcs & (PMCS_LFEN | PMCS_LREN))
1935                         jme_wait_link(jme);
1936                 jme_clear_pm(jme);
1937         } else {
1938                 jme_phy_off(jme);
1939         }
1940 }
1941
1942 static int
1943 jme_close(struct net_device *netdev)
1944 {
1945         struct jme_adapter *jme = netdev_priv(netdev);
1946
1947         netif_stop_queue(netdev);
1948         netif_carrier_off(netdev);
1949
1950         jme_stop_irq(jme);
1951         jme_free_irq(jme);
1952
1953         JME_NAPI_DISABLE(jme);
1954
1955         tasklet_kill(&jme->linkch_task);
1956         tasklet_kill(&jme->txclean_task);
1957         tasklet_kill(&jme->rxclean_task);
1958         tasklet_kill(&jme->rxempty_task);
1959
1960         jme_disable_rx_engine(jme);
1961         jme_disable_tx_engine(jme);
1962         jme_reset_mac_processor(jme);
1963         jme_free_rx_resources(jme);
1964         jme_free_tx_resources(jme);
1965         jme->phylink = 0;
1966         jme_phy_off(jme);
1967
1968         return 0;
1969 }
1970
1971 static int
1972 jme_alloc_txdesc(struct jme_adapter *jme,
1973                         struct sk_buff *skb)
1974 {
1975         struct jme_ring *txring = &(jme->txring[0]);
1976         int idx, nr_alloc, mask = jme->tx_ring_mask;
1977
1978         idx = txring->next_to_use;
1979         nr_alloc = skb_shinfo(skb)->nr_frags + 2;
1980
1981         if (unlikely(atomic_read(&txring->nr_free) < nr_alloc))
1982                 return -1;
1983
1984         atomic_sub(nr_alloc, &txring->nr_free);
1985
1986         txring->next_to_use = (txring->next_to_use + nr_alloc) & mask;
1987
1988         return idx;
1989 }
1990
1991 static void
1992 jme_fill_tx_map(struct pci_dev *pdev,
1993                 struct txdesc *txdesc,
1994                 struct jme_buffer_info *txbi,
1995                 struct page *page,
1996                 u32 page_offset,
1997                 u32 len,
1998                 bool hidma)
1999 {
2000         dma_addr_t dmaaddr;
2001
2002         dmaaddr = pci_map_page(pdev,
2003                                 page,
2004                                 page_offset,
2005                                 len,
2006                                 PCI_DMA_TODEVICE);
2007
2008         pci_dma_sync_single_for_device(pdev,
2009                                        dmaaddr,
2010                                        len,
2011                                        PCI_DMA_TODEVICE);
2012
2013         txdesc->dw[0] = 0;
2014         txdesc->dw[1] = 0;
2015         txdesc->desc2.flags     = TXFLAG_OWN;
2016         txdesc->desc2.flags     |= (hidma) ? TXFLAG_64BIT : 0;
2017         txdesc->desc2.datalen   = cpu_to_le16(len);
2018         txdesc->desc2.bufaddrh  = cpu_to_le32((__u64)dmaaddr >> 32);
2019         txdesc->desc2.bufaddrl  = cpu_to_le32(
2020                                         (__u64)dmaaddr & 0xFFFFFFFFUL);
2021
2022         txbi->mapping = dmaaddr;
2023         txbi->len = len;
2024 }
2025
2026 static void
2027 jme_map_tx_skb(struct jme_adapter *jme, struct sk_buff *skb, int idx)
2028 {
2029         struct jme_ring *txring = &(jme->txring[0]);
2030         struct txdesc *txdesc = txring->desc, *ctxdesc;
2031         struct jme_buffer_info *txbi = txring->bufinf, *ctxbi;
2032         bool hidma = jme->dev->features & NETIF_F_HIGHDMA;
2033         int i, nr_frags = skb_shinfo(skb)->nr_frags;
2034         int mask = jme->tx_ring_mask;
2035         const struct skb_frag_struct *frag;
2036         u32 len;
2037
2038         for (i = 0 ; i < nr_frags ; ++i) {
2039                 frag = &skb_shinfo(skb)->frags[i];
2040                 ctxdesc = txdesc + ((idx + i + 2) & (mask));
2041                 ctxbi = txbi + ((idx + i + 2) & (mask));
2042
2043                 jme_fill_tx_map(jme->pdev, ctxdesc, ctxbi,
2044                                 skb_frag_page(frag),
2045                                 frag->page_offset, skb_frag_size(frag), hidma);
2046         }
2047
2048         len = skb_is_nonlinear(skb) ? skb_headlen(skb) : skb->len;
2049         ctxdesc = txdesc + ((idx + 1) & (mask));
2050         ctxbi = txbi + ((idx + 1) & (mask));
2051         jme_fill_tx_map(jme->pdev, ctxdesc, ctxbi, virt_to_page(skb->data),
2052                         offset_in_page(skb->data), len, hidma);
2053
2054 }
2055
2056 static int
2057 jme_expand_header(struct jme_adapter *jme, struct sk_buff *skb)
2058 {
2059         if (unlikely(skb_shinfo(skb)->gso_size &&
2060                         skb_header_cloned(skb) &&
2061                         pskb_expand_head(skb, 0, 0, GFP_ATOMIC))) {
2062                 dev_kfree_skb(skb);
2063                 return -1;
2064         }
2065
2066         return 0;
2067 }
2068
2069 static int
2070 jme_tx_tso(struct sk_buff *skb, __le16 *mss, u8 *flags)
2071 {
2072         *mss = cpu_to_le16(skb_shinfo(skb)->gso_size << TXDESC_MSS_SHIFT);
2073         if (*mss) {
2074                 *flags |= TXFLAG_LSEN;
2075
2076                 if (skb->protocol == htons(ETH_P_IP)) {
2077                         struct iphdr *iph = ip_hdr(skb);
2078
2079                         iph->check = 0;
2080                         tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
2081                                                                 iph->daddr, 0,
2082                                                                 IPPROTO_TCP,
2083                                                                 0);
2084                 } else {
2085                         struct ipv6hdr *ip6h = ipv6_hdr(skb);
2086
2087                         tcp_hdr(skb)->check = ~csum_ipv6_magic(&ip6h->saddr,
2088                                                                 &ip6h->daddr, 0,
2089                                                                 IPPROTO_TCP,
2090                                                                 0);
2091                 }
2092
2093                 return 0;
2094         }
2095
2096         return 1;
2097 }
2098
2099 static void
2100 jme_tx_csum(struct jme_adapter *jme, struct sk_buff *skb, u8 *flags)
2101 {
2102         if (skb->ip_summed == CHECKSUM_PARTIAL) {
2103                 u8 ip_proto;
2104
2105                 switch (skb->protocol) {
2106                 case htons(ETH_P_IP):
2107                         ip_proto = ip_hdr(skb)->protocol;
2108                         break;
2109                 case htons(ETH_P_IPV6):
2110                         ip_proto = ipv6_hdr(skb)->nexthdr;
2111                         break;
2112                 default:
2113                         ip_proto = 0;
2114                         break;
2115                 }
2116
2117                 switch (ip_proto) {
2118                 case IPPROTO_TCP:
2119                         *flags |= TXFLAG_TCPCS;
2120                         break;
2121                 case IPPROTO_UDP:
2122                         *flags |= TXFLAG_UDPCS;
2123                         break;
2124                 default:
2125                         netif_err(jme, tx_err, jme->dev, "Error upper layer protocol\n");
2126                         break;
2127                 }
2128         }
2129 }
2130
2131 static inline void
2132 jme_tx_vlan(struct sk_buff *skb, __le16 *vlan, u8 *flags)
2133 {
2134         if (vlan_tx_tag_present(skb)) {
2135                 *flags |= TXFLAG_TAGON;
2136                 *vlan = cpu_to_le16(vlan_tx_tag_get(skb));
2137         }
2138 }
2139
2140 static int
2141 jme_fill_tx_desc(struct jme_adapter *jme, struct sk_buff *skb, int idx)
2142 {
2143         struct jme_ring *txring = &(jme->txring[0]);
2144         struct txdesc *txdesc;
2145         struct jme_buffer_info *txbi;
2146         u8 flags;
2147
2148         txdesc = (struct txdesc *)txring->desc + idx;
2149         txbi = txring->bufinf + idx;
2150
2151         txdesc->dw[0] = 0;
2152         txdesc->dw[1] = 0;
2153         txdesc->dw[2] = 0;
2154         txdesc->dw[3] = 0;
2155         txdesc->desc1.pktsize = cpu_to_le16(skb->len);
2156         /*
2157          * Set OWN bit at final.
2158          * When kernel transmit faster than NIC.
2159          * And NIC trying to send this descriptor before we tell
2160          * it to start sending this TX queue.
2161          * Other fields are already filled correctly.
2162          */
2163         wmb();
2164         flags = TXFLAG_OWN | TXFLAG_INT;
2165         /*
2166          * Set checksum flags while not tso
2167          */
2168         if (jme_tx_tso(skb, &txdesc->desc1.mss, &flags))
2169                 jme_tx_csum(jme, skb, &flags);
2170         jme_tx_vlan(skb, &txdesc->desc1.vlan, &flags);
2171         jme_map_tx_skb(jme, skb, idx);
2172         txdesc->desc1.flags = flags;
2173         /*
2174          * Set tx buffer info after telling NIC to send
2175          * For better tx_clean timing
2176          */
2177         wmb();
2178         txbi->nr_desc = skb_shinfo(skb)->nr_frags + 2;
2179         txbi->skb = skb;
2180         txbi->len = skb->len;
2181         txbi->start_xmit = jiffies;
2182         if (!txbi->start_xmit)
2183                 txbi->start_xmit = (0UL-1);
2184
2185         return 0;
2186 }
2187
2188 static void
2189 jme_stop_queue_if_full(struct jme_adapter *jme)
2190 {
2191         struct jme_ring *txring = &(jme->txring[0]);
2192         struct jme_buffer_info *txbi = txring->bufinf;
2193         int idx = atomic_read(&txring->next_to_clean);
2194
2195         txbi += idx;
2196
2197         smp_wmb();
2198         if (unlikely(atomic_read(&txring->nr_free) < (MAX_SKB_FRAGS+2))) {
2199                 netif_stop_queue(jme->dev);
2200                 netif_info(jme, tx_queued, jme->dev, "TX Queue Paused\n");
2201                 smp_wmb();
2202                 if (atomic_read(&txring->nr_free)
2203                         >= (jme->tx_wake_threshold)) {
2204                         netif_wake_queue(jme->dev);
2205                         netif_info(jme, tx_queued, jme->dev, "TX Queue Fast Waked\n");
2206                 }
2207         }
2208
2209         if (unlikely(txbi->start_xmit &&
2210                         (jiffies - txbi->start_xmit) >= TX_TIMEOUT &&
2211                         txbi->skb)) {
2212                 netif_stop_queue(jme->dev);
2213                 netif_info(jme, tx_queued, jme->dev,
2214                            "TX Queue Stopped %d@%lu\n", idx, jiffies);
2215         }
2216 }
2217
2218 /*
2219  * This function is already protected by netif_tx_lock()
2220  */
2221
2222 static netdev_tx_t
2223 jme_start_xmit(struct sk_buff *skb, struct net_device *netdev)
2224 {
2225         struct jme_adapter *jme = netdev_priv(netdev);
2226         int idx;
2227
2228         if (unlikely(jme_expand_header(jme, skb))) {
2229                 ++(NET_STAT(jme).tx_dropped);
2230                 return NETDEV_TX_OK;
2231         }
2232
2233         idx = jme_alloc_txdesc(jme, skb);
2234
2235         if (unlikely(idx < 0)) {
2236                 netif_stop_queue(netdev);
2237                 netif_err(jme, tx_err, jme->dev,
2238                           "BUG! Tx ring full when queue awake!\n");
2239
2240                 return NETDEV_TX_BUSY;
2241         }
2242
2243         jme_fill_tx_desc(jme, skb, idx);
2244
2245         jwrite32(jme, JME_TXCS, jme->reg_txcs |
2246                                 TXCS_SELECT_QUEUE0 |
2247                                 TXCS_QUEUE0S |
2248                                 TXCS_ENABLE);
2249
2250         tx_dbg(jme, "xmit: %d+%d@%lu\n",
2251                idx, skb_shinfo(skb)->nr_frags + 2, jiffies);
2252         jme_stop_queue_if_full(jme);
2253
2254         return NETDEV_TX_OK;
2255 }
2256
2257 static void
2258 jme_set_unicastaddr(struct net_device *netdev)
2259 {
2260         struct jme_adapter *jme = netdev_priv(netdev);
2261         u32 val;
2262
2263         val = (netdev->dev_addr[3] & 0xff) << 24 |
2264               (netdev->dev_addr[2] & 0xff) << 16 |
2265               (netdev->dev_addr[1] & 0xff) <<  8 |
2266               (netdev->dev_addr[0] & 0xff);
2267         jwrite32(jme, JME_RXUMA_LO, val);
2268         val = (netdev->dev_addr[5] & 0xff) << 8 |
2269               (netdev->dev_addr[4] & 0xff);
2270         jwrite32(jme, JME_RXUMA_HI, val);
2271 }
2272
2273 static int
2274 jme_set_macaddr(struct net_device *netdev, void *p)
2275 {
2276         struct jme_adapter *jme = netdev_priv(netdev);
2277         struct sockaddr *addr = p;
2278
2279         if (netif_running(netdev))
2280                 return -EBUSY;
2281
2282         spin_lock_bh(&jme->macaddr_lock);
2283         memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
2284         jme_set_unicastaddr(netdev);
2285         spin_unlock_bh(&jme->macaddr_lock);
2286
2287         return 0;
2288 }
2289
2290 static void
2291 jme_set_multi(struct net_device *netdev)
2292 {
2293         struct jme_adapter *jme = netdev_priv(netdev);
2294         u32 mc_hash[2] = {};
2295
2296         spin_lock_bh(&jme->rxmcs_lock);
2297
2298         jme->reg_rxmcs |= RXMCS_BRDFRAME | RXMCS_UNIFRAME;
2299
2300         if (netdev->flags & IFF_PROMISC) {
2301                 jme->reg_rxmcs |= RXMCS_ALLFRAME;
2302         } else if (netdev->flags & IFF_ALLMULTI) {
2303                 jme->reg_rxmcs |= RXMCS_ALLMULFRAME;
2304         } else if (netdev->flags & IFF_MULTICAST) {
2305                 struct netdev_hw_addr *ha;
2306                 int bit_nr;
2307
2308                 jme->reg_rxmcs |= RXMCS_MULFRAME | RXMCS_MULFILTERED;
2309                 netdev_for_each_mc_addr(ha, netdev) {
2310                         bit_nr = ether_crc(ETH_ALEN, ha->addr) & 0x3F;
2311                         mc_hash[bit_nr >> 5] |= 1 << (bit_nr & 0x1F);
2312                 }
2313
2314                 jwrite32(jme, JME_RXMCHT_LO, mc_hash[0]);
2315                 jwrite32(jme, JME_RXMCHT_HI, mc_hash[1]);
2316         }
2317
2318         wmb();
2319         jwrite32(jme, JME_RXMCS, jme->reg_rxmcs);
2320
2321         spin_unlock_bh(&jme->rxmcs_lock);
2322 }
2323
2324 static int
2325 jme_change_mtu(struct net_device *netdev, int new_mtu)
2326 {
2327         struct jme_adapter *jme = netdev_priv(netdev);
2328
2329         if (new_mtu == jme->old_mtu)
2330                 return 0;
2331
2332         if (((new_mtu + ETH_HLEN) > MAX_ETHERNET_JUMBO_PACKET_SIZE) ||
2333                 ((new_mtu) < IPV6_MIN_MTU))
2334                 return -EINVAL;
2335
2336
2337         netdev->mtu = new_mtu;
2338         netdev_update_features(netdev);
2339
2340         jme_restart_rx_engine(jme);
2341         jme_reset_link(jme);
2342
2343         return 0;
2344 }
2345
2346 static void
2347 jme_tx_timeout(struct net_device *netdev)
2348 {
2349         struct jme_adapter *jme = netdev_priv(netdev);
2350
2351         jme->phylink = 0;
2352         jme_reset_phy_processor(jme);
2353         if (test_bit(JME_FLAG_SSET, &jme->flags))
2354                 jme_set_settings(netdev, &jme->old_ecmd);
2355
2356         /*
2357          * Force to Reset the link again
2358          */
2359         jme_reset_link(jme);
2360 }
2361
2362 static inline void jme_pause_rx(struct jme_adapter *jme)
2363 {
2364         atomic_dec(&jme->link_changing);
2365
2366         jme_set_rx_pcc(jme, PCC_OFF);
2367         if (test_bit(JME_FLAG_POLL, &jme->flags)) {
2368                 JME_NAPI_DISABLE(jme);
2369         } else {
2370                 tasklet_disable(&jme->rxclean_task);
2371                 tasklet_disable(&jme->rxempty_task);
2372         }
2373 }
2374
2375 static inline void jme_resume_rx(struct jme_adapter *jme)
2376 {
2377         struct dynpcc_info *dpi = &(jme->dpi);
2378
2379         if (test_bit(JME_FLAG_POLL, &jme->flags)) {
2380                 JME_NAPI_ENABLE(jme);
2381         } else {
2382                 tasklet_hi_enable(&jme->rxclean_task);
2383                 tasklet_hi_enable(&jme->rxempty_task);
2384         }
2385         dpi->cur                = PCC_P1;
2386         dpi->attempt            = PCC_P1;
2387         dpi->cnt                = 0;
2388         jme_set_rx_pcc(jme, PCC_P1);
2389
2390         atomic_inc(&jme->link_changing);
2391 }
2392
2393 static void
2394 jme_get_drvinfo(struct net_device *netdev,
2395                      struct ethtool_drvinfo *info)
2396 {
2397         struct jme_adapter *jme = netdev_priv(netdev);
2398
2399         strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
2400         strlcpy(info->version, DRV_VERSION, sizeof(info->version));
2401         strlcpy(info->bus_info, pci_name(jme->pdev), sizeof(info->bus_info));
2402 }
2403
2404 static int
2405 jme_get_regs_len(struct net_device *netdev)
2406 {
2407         return JME_REG_LEN;
2408 }
2409
2410 static void
2411 mmapio_memcpy(struct jme_adapter *jme, u32 *p, u32 reg, int len)
2412 {
2413         int i;
2414
2415         for (i = 0 ; i < len ; i += 4)
2416                 p[i >> 2] = jread32(jme, reg + i);
2417 }
2418
2419 static void
2420 mdio_memcpy(struct jme_adapter *jme, u32 *p, int reg_nr)
2421 {
2422         int i;
2423         u16 *p16 = (u16 *)p;
2424
2425         for (i = 0 ; i < reg_nr ; ++i)
2426                 p16[i] = jme_mdio_read(jme->dev, jme->mii_if.phy_id, i);
2427 }
2428
2429 static void
2430 jme_get_regs(struct net_device *netdev, struct ethtool_regs *regs, void *p)
2431 {
2432         struct jme_adapter *jme = netdev_priv(netdev);
2433         u32 *p32 = (u32 *)p;
2434
2435         memset(p, 0xFF, JME_REG_LEN);
2436
2437         regs->version = 1;
2438         mmapio_memcpy(jme, p32, JME_MAC, JME_MAC_LEN);
2439
2440         p32 += 0x100 >> 2;
2441         mmapio_memcpy(jme, p32, JME_PHY, JME_PHY_LEN);
2442
2443         p32 += 0x100 >> 2;
2444         mmapio_memcpy(jme, p32, JME_MISC, JME_MISC_LEN);
2445
2446         p32 += 0x100 >> 2;
2447         mmapio_memcpy(jme, p32, JME_RSS, JME_RSS_LEN);
2448
2449         p32 += 0x100 >> 2;
2450         mdio_memcpy(jme, p32, JME_PHY_REG_NR);
2451 }
2452
2453 static int
2454 jme_get_coalesce(struct net_device *netdev, struct ethtool_coalesce *ecmd)
2455 {
2456         struct jme_adapter *jme = netdev_priv(netdev);
2457
2458         ecmd->tx_coalesce_usecs = PCC_TX_TO;
2459         ecmd->tx_max_coalesced_frames = PCC_TX_CNT;
2460
2461         if (test_bit(JME_FLAG_POLL, &jme->flags)) {
2462                 ecmd->use_adaptive_rx_coalesce = false;
2463                 ecmd->rx_coalesce_usecs = 0;
2464                 ecmd->rx_max_coalesced_frames = 0;
2465                 return 0;
2466         }
2467
2468         ecmd->use_adaptive_rx_coalesce = true;
2469
2470         switch (jme->dpi.cur) {
2471         case PCC_P1:
2472                 ecmd->rx_coalesce_usecs = PCC_P1_TO;
2473                 ecmd->rx_max_coalesced_frames = PCC_P1_CNT;
2474                 break;
2475         case PCC_P2:
2476                 ecmd->rx_coalesce_usecs = PCC_P2_TO;
2477                 ecmd->rx_max_coalesced_frames = PCC_P2_CNT;
2478                 break;
2479         case PCC_P3:
2480                 ecmd->rx_coalesce_usecs = PCC_P3_TO;
2481                 ecmd->rx_max_coalesced_frames = PCC_P3_CNT;
2482                 break;
2483         default:
2484                 break;
2485         }
2486
2487         return 0;
2488 }
2489
2490 static int
2491 jme_set_coalesce(struct net_device *netdev, struct ethtool_coalesce *ecmd)
2492 {
2493         struct jme_adapter *jme = netdev_priv(netdev);
2494         struct dynpcc_info *dpi = &(jme->dpi);
2495
2496         if (netif_running(netdev))
2497                 return -EBUSY;
2498
2499         if (ecmd->use_adaptive_rx_coalesce &&
2500             test_bit(JME_FLAG_POLL, &jme->flags)) {
2501                 clear_bit(JME_FLAG_POLL, &jme->flags);
2502                 jme->jme_rx = netif_rx;
2503                 dpi->cur                = PCC_P1;
2504                 dpi->attempt            = PCC_P1;
2505                 dpi->cnt                = 0;
2506                 jme_set_rx_pcc(jme, PCC_P1);
2507                 jme_interrupt_mode(jme);
2508         } else if (!(ecmd->use_adaptive_rx_coalesce) &&
2509                    !(test_bit(JME_FLAG_POLL, &jme->flags))) {
2510                 set_bit(JME_FLAG_POLL, &jme->flags);
2511                 jme->jme_rx = netif_receive_skb;
2512                 jme_interrupt_mode(jme);
2513         }
2514
2515         return 0;
2516 }
2517
2518 static void
2519 jme_get_pauseparam(struct net_device *netdev,
2520                         struct ethtool_pauseparam *ecmd)
2521 {
2522         struct jme_adapter *jme = netdev_priv(netdev);
2523         u32 val;
2524
2525         ecmd->tx_pause = (jme->reg_txpfc & TXPFC_PF_EN) != 0;
2526         ecmd->rx_pause = (jme->reg_rxmcs & RXMCS_FLOWCTRL) != 0;
2527
2528         spin_lock_bh(&jme->phy_lock);
2529         val = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_ADVERTISE);
2530         spin_unlock_bh(&jme->phy_lock);
2531
2532         ecmd->autoneg =
2533                 (val & (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM)) != 0;
2534 }
2535
2536 static int
2537 jme_set_pauseparam(struct net_device *netdev,
2538                         struct ethtool_pauseparam *ecmd)
2539 {
2540         struct jme_adapter *jme = netdev_priv(netdev);
2541         u32 val;
2542
2543         if (((jme->reg_txpfc & TXPFC_PF_EN) != 0) ^
2544                 (ecmd->tx_pause != 0)) {
2545
2546                 if (ecmd->tx_pause)
2547                         jme->reg_txpfc |= TXPFC_PF_EN;
2548                 else
2549                         jme->reg_txpfc &= ~TXPFC_PF_EN;
2550
2551                 jwrite32(jme, JME_TXPFC, jme->reg_txpfc);
2552         }
2553
2554         spin_lock_bh(&jme->rxmcs_lock);
2555         if (((jme->reg_rxmcs & RXMCS_FLOWCTRL) != 0) ^
2556                 (ecmd->rx_pause != 0)) {
2557
2558                 if (ecmd->rx_pause)
2559                         jme->reg_rxmcs |= RXMCS_FLOWCTRL;
2560                 else
2561                         jme->reg_rxmcs &= ~RXMCS_FLOWCTRL;
2562
2563                 jwrite32(jme, JME_RXMCS, jme->reg_rxmcs);
2564         }
2565         spin_unlock_bh(&jme->rxmcs_lock);
2566
2567         spin_lock_bh(&jme->phy_lock);
2568         val = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_ADVERTISE);
2569         if (((val & (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM)) != 0) ^
2570                 (ecmd->autoneg != 0)) {
2571
2572                 if (ecmd->autoneg)
2573                         val |= (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
2574                 else
2575                         val &= ~(ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
2576
2577                 jme_mdio_write(jme->dev, jme->mii_if.phy_id,
2578                                 MII_ADVERTISE, val);
2579         }
2580         spin_unlock_bh(&jme->phy_lock);
2581
2582         return 0;
2583 }
2584
2585 static void
2586 jme_get_wol(struct net_device *netdev,
2587                 struct ethtool_wolinfo *wol)
2588 {
2589         struct jme_adapter *jme = netdev_priv(netdev);
2590
2591         wol->supported = WAKE_MAGIC | WAKE_PHY;
2592
2593         wol->wolopts = 0;
2594
2595         if (jme->reg_pmcs & (PMCS_LFEN | PMCS_LREN))
2596                 wol->wolopts |= WAKE_PHY;
2597
2598         if (jme->reg_pmcs & PMCS_MFEN)
2599                 wol->wolopts |= WAKE_MAGIC;
2600
2601 }
2602
2603 static int
2604 jme_set_wol(struct net_device *netdev,
2605                 struct ethtool_wolinfo *wol)
2606 {
2607         struct jme_adapter *jme = netdev_priv(netdev);
2608
2609         if (wol->wolopts & (WAKE_MAGICSECURE |
2610                                 WAKE_UCAST |
2611                                 WAKE_MCAST |
2612                                 WAKE_BCAST |
2613                                 WAKE_ARP))
2614                 return -EOPNOTSUPP;
2615
2616         jme->reg_pmcs = 0;
2617
2618         if (wol->wolopts & WAKE_PHY)
2619                 jme->reg_pmcs |= PMCS_LFEN | PMCS_LREN;
2620
2621         if (wol->wolopts & WAKE_MAGIC)
2622                 jme->reg_pmcs |= PMCS_MFEN;
2623
2624         jwrite32(jme, JME_PMCS, jme->reg_pmcs);
2625         device_set_wakeup_enable(&jme->pdev->dev, !!(jme->reg_pmcs));
2626
2627         return 0;
2628 }
2629
2630 static int
2631 jme_get_settings(struct net_device *netdev,
2632                      struct ethtool_cmd *ecmd)
2633 {
2634         struct jme_adapter *jme = netdev_priv(netdev);
2635         int rc;
2636
2637         spin_lock_bh(&jme->phy_lock);
2638         rc = mii_ethtool_gset(&(jme->mii_if), ecmd);
2639         spin_unlock_bh(&jme->phy_lock);
2640         return rc;
2641 }
2642
2643 static int
2644 jme_set_settings(struct net_device *netdev,
2645                      struct ethtool_cmd *ecmd)
2646 {
2647         struct jme_adapter *jme = netdev_priv(netdev);
2648         int rc, fdc = 0;
2649
2650         if (ethtool_cmd_speed(ecmd) == SPEED_1000
2651             && ecmd->autoneg != AUTONEG_ENABLE)
2652                 return -EINVAL;
2653
2654         /*
2655          * Check If user changed duplex only while force_media.
2656          * Hardware would not generate link change interrupt.
2657          */
2658         if (jme->mii_if.force_media &&
2659         ecmd->autoneg != AUTONEG_ENABLE &&
2660         (jme->mii_if.full_duplex != ecmd->duplex))
2661                 fdc = 1;
2662
2663         spin_lock_bh(&jme->phy_lock);
2664         rc = mii_ethtool_sset(&(jme->mii_if), ecmd);
2665         spin_unlock_bh(&jme->phy_lock);
2666
2667         if (!rc) {
2668                 if (fdc)
2669                         jme_reset_link(jme);
2670                 jme->old_ecmd = *ecmd;
2671                 set_bit(JME_FLAG_SSET, &jme->flags);
2672         }
2673
2674         return rc;
2675 }
2676
2677 static int
2678 jme_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd)
2679 {
2680         int rc;
2681         struct jme_adapter *jme = netdev_priv(netdev);
2682         struct mii_ioctl_data *mii_data = if_mii(rq);
2683         unsigned int duplex_chg;
2684
2685         if (cmd == SIOCSMIIREG) {
2686                 u16 val = mii_data->val_in;
2687                 if (!(val & (BMCR_RESET|BMCR_ANENABLE)) &&
2688                     (val & BMCR_SPEED1000))
2689                         return -EINVAL;
2690         }
2691
2692         spin_lock_bh(&jme->phy_lock);
2693         rc = generic_mii_ioctl(&jme->mii_if, mii_data, cmd, &duplex_chg);
2694         spin_unlock_bh(&jme->phy_lock);
2695
2696         if (!rc && (cmd == SIOCSMIIREG)) {
2697                 if (duplex_chg)
2698                         jme_reset_link(jme);
2699                 jme_get_settings(netdev, &jme->old_ecmd);
2700                 set_bit(JME_FLAG_SSET, &jme->flags);
2701         }
2702
2703         return rc;
2704 }
2705
2706 static u32
2707 jme_get_link(struct net_device *netdev)
2708 {
2709         struct jme_adapter *jme = netdev_priv(netdev);
2710         return jread32(jme, JME_PHY_LINK) & PHY_LINK_UP;
2711 }
2712
2713 static u32
2714 jme_get_msglevel(struct net_device *netdev)
2715 {
2716         struct jme_adapter *jme = netdev_priv(netdev);
2717         return jme->msg_enable;
2718 }
2719
2720 static void
2721 jme_set_msglevel(struct net_device *netdev, u32 value)
2722 {
2723         struct jme_adapter *jme = netdev_priv(netdev);
2724         jme->msg_enable = value;
2725 }
2726
2727 static netdev_features_t
2728 jme_fix_features(struct net_device *netdev, netdev_features_t features)
2729 {
2730         if (netdev->mtu > 1900)
2731                 features &= ~(NETIF_F_ALL_TSO | NETIF_F_ALL_CSUM);
2732         return features;
2733 }
2734
2735 static int
2736 jme_set_features(struct net_device *netdev, netdev_features_t features)
2737 {
2738         struct jme_adapter *jme = netdev_priv(netdev);
2739
2740         spin_lock_bh(&jme->rxmcs_lock);
2741         if (features & NETIF_F_RXCSUM)
2742                 jme->reg_rxmcs |= RXMCS_CHECKSUM;
2743         else
2744                 jme->reg_rxmcs &= ~RXMCS_CHECKSUM;
2745         jwrite32(jme, JME_RXMCS, jme->reg_rxmcs);
2746         spin_unlock_bh(&jme->rxmcs_lock);
2747
2748         return 0;
2749 }
2750
2751 #ifdef CONFIG_NET_POLL_CONTROLLER
2752 static void jme_netpoll(struct net_device *dev)
2753 {
2754         unsigned long flags;
2755
2756         local_irq_save(flags);
2757         jme_intr(dev->irq, dev);
2758         local_irq_restore(flags);
2759 }
2760 #endif
2761
2762 static int
2763 jme_nway_reset(struct net_device *netdev)
2764 {
2765         struct jme_adapter *jme = netdev_priv(netdev);
2766         jme_restart_an(jme);
2767         return 0;
2768 }
2769
2770 static u8
2771 jme_smb_read(struct jme_adapter *jme, unsigned int addr)
2772 {
2773         u32 val;
2774         int to;
2775
2776         val = jread32(jme, JME_SMBCSR);
2777         to = JME_SMB_BUSY_TIMEOUT;
2778         while ((val & SMBCSR_BUSY) && --to) {
2779                 msleep(1);
2780                 val = jread32(jme, JME_SMBCSR);
2781         }
2782         if (!to) {
2783                 netif_err(jme, hw, jme->dev, "SMB Bus Busy\n");
2784                 return 0xFF;
2785         }
2786
2787         jwrite32(jme, JME_SMBINTF,
2788                 ((addr << SMBINTF_HWADDR_SHIFT) & SMBINTF_HWADDR) |
2789                 SMBINTF_HWRWN_READ |
2790                 SMBINTF_HWCMD);
2791
2792         val = jread32(jme, JME_SMBINTF);
2793         to = JME_SMB_BUSY_TIMEOUT;
2794         while ((val & SMBINTF_HWCMD) && --to) {
2795                 msleep(1);
2796                 val = jread32(jme, JME_SMBINTF);
2797         }
2798         if (!to) {
2799                 netif_err(jme, hw, jme->dev, "SMB Bus Busy\n");
2800                 return 0xFF;
2801         }
2802
2803         return (val & SMBINTF_HWDATR) >> SMBINTF_HWDATR_SHIFT;
2804 }
2805
2806 static void
2807 jme_smb_write(struct jme_adapter *jme, unsigned int addr, u8 data)
2808 {
2809         u32 val;
2810         int to;
2811
2812         val = jread32(jme, JME_SMBCSR);
2813         to = JME_SMB_BUSY_TIMEOUT;
2814         while ((val & SMBCSR_BUSY) && --to) {
2815                 msleep(1);
2816                 val = jread32(jme, JME_SMBCSR);
2817         }
2818         if (!to) {
2819                 netif_err(jme, hw, jme->dev, "SMB Bus Busy\n");
2820                 return;
2821         }
2822
2823         jwrite32(jme, JME_SMBINTF,
2824                 ((data << SMBINTF_HWDATW_SHIFT) & SMBINTF_HWDATW) |
2825                 ((addr << SMBINTF_HWADDR_SHIFT) & SMBINTF_HWADDR) |
2826                 SMBINTF_HWRWN_WRITE |
2827                 SMBINTF_HWCMD);
2828
2829         val = jread32(jme, JME_SMBINTF);
2830         to = JME_SMB_BUSY_TIMEOUT;
2831         while ((val & SMBINTF_HWCMD) && --to) {
2832                 msleep(1);
2833                 val = jread32(jme, JME_SMBINTF);
2834         }
2835         if (!to) {
2836                 netif_err(jme, hw, jme->dev, "SMB Bus Busy\n");
2837                 return;
2838         }
2839
2840         mdelay(2);
2841 }
2842
2843 static int
2844 jme_get_eeprom_len(struct net_device *netdev)
2845 {
2846         struct jme_adapter *jme = netdev_priv(netdev);
2847         u32 val;
2848         val = jread32(jme, JME_SMBCSR);
2849         return (val & SMBCSR_EEPROMD) ? JME_SMB_LEN : 0;
2850 }
2851
2852 static int
2853 jme_get_eeprom(struct net_device *netdev,
2854                 struct ethtool_eeprom *eeprom, u8 *data)
2855 {
2856         struct jme_adapter *jme = netdev_priv(netdev);
2857         int i, offset = eeprom->offset, len = eeprom->len;
2858
2859         /*
2860          * ethtool will check the boundary for us
2861          */
2862         eeprom->magic = JME_EEPROM_MAGIC;
2863         for (i = 0 ; i < len ; ++i)
2864                 data[i] = jme_smb_read(jme, i + offset);
2865
2866         return 0;
2867 }
2868
2869 static int
2870 jme_set_eeprom(struct net_device *netdev,
2871                 struct ethtool_eeprom *eeprom, u8 *data)
2872 {
2873         struct jme_adapter *jme = netdev_priv(netdev);
2874         int i, offset = eeprom->offset, len = eeprom->len;
2875
2876         if (eeprom->magic != JME_EEPROM_MAGIC)
2877                 return -EINVAL;
2878
2879         /*
2880          * ethtool will check the boundary for us
2881          */
2882         for (i = 0 ; i < len ; ++i)
2883                 jme_smb_write(jme, i + offset, data[i]);
2884
2885         return 0;
2886 }
2887
2888 static const struct ethtool_ops jme_ethtool_ops = {
2889         .get_drvinfo            = jme_get_drvinfo,
2890         .get_regs_len           = jme_get_regs_len,
2891         .get_regs               = jme_get_regs,
2892         .get_coalesce           = jme_get_coalesce,
2893         .set_coalesce           = jme_set_coalesce,
2894         .get_pauseparam         = jme_get_pauseparam,
2895         .set_pauseparam         = jme_set_pauseparam,
2896         .get_wol                = jme_get_wol,
2897         .set_wol                = jme_set_wol,
2898         .get_settings           = jme_get_settings,
2899         .set_settings           = jme_set_settings,
2900         .get_link               = jme_get_link,
2901         .get_msglevel           = jme_get_msglevel,
2902         .set_msglevel           = jme_set_msglevel,
2903         .nway_reset             = jme_nway_reset,
2904         .get_eeprom_len         = jme_get_eeprom_len,
2905         .get_eeprom             = jme_get_eeprom,
2906         .set_eeprom             = jme_set_eeprom,
2907 };
2908
2909 static int
2910 jme_pci_dma64(struct pci_dev *pdev)
2911 {
2912         if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250 &&
2913             !pci_set_dma_mask(pdev, DMA_BIT_MASK(64)))
2914                 if (!pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)))
2915                         return 1;
2916
2917         if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250 &&
2918             !pci_set_dma_mask(pdev, DMA_BIT_MASK(40)))
2919                 if (!pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(40)))
2920                         return 1;
2921
2922         if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32)))
2923                 if (!pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)))
2924                         return 0;
2925
2926         return -1;
2927 }
2928
2929 static inline void
2930 jme_phy_init(struct jme_adapter *jme)
2931 {
2932         u16 reg26;
2933
2934         reg26 = jme_mdio_read(jme->dev, jme->mii_if.phy_id, 26);
2935         jme_mdio_write(jme->dev, jme->mii_if.phy_id, 26, reg26 | 0x1000);
2936 }
2937
2938 static inline void
2939 jme_check_hw_ver(struct jme_adapter *jme)
2940 {
2941         u32 chipmode;
2942
2943         chipmode = jread32(jme, JME_CHIPMODE);
2944
2945         jme->fpgaver = (chipmode & CM_FPGAVER_MASK) >> CM_FPGAVER_SHIFT;
2946         jme->chiprev = (chipmode & CM_CHIPREV_MASK) >> CM_CHIPREV_SHIFT;
2947         jme->chip_main_rev = jme->chiprev & 0xF;
2948         jme->chip_sub_rev = (jme->chiprev >> 4) & 0xF;
2949 }
2950
2951 static const struct net_device_ops jme_netdev_ops = {
2952         .ndo_open               = jme_open,
2953         .ndo_stop               = jme_close,
2954         .ndo_validate_addr      = eth_validate_addr,
2955         .ndo_do_ioctl           = jme_ioctl,
2956         .ndo_start_xmit         = jme_start_xmit,
2957         .ndo_set_mac_address    = jme_set_macaddr,
2958         .ndo_set_rx_mode        = jme_set_multi,
2959         .ndo_change_mtu         = jme_change_mtu,
2960         .ndo_tx_timeout         = jme_tx_timeout,
2961         .ndo_fix_features       = jme_fix_features,
2962         .ndo_set_features       = jme_set_features,
2963 #ifdef CONFIG_NET_POLL_CONTROLLER
2964         .ndo_poll_controller    = jme_netpoll,
2965 #endif
2966 };
2967
2968 static int
2969 jme_init_one(struct pci_dev *pdev,
2970              const struct pci_device_id *ent)
2971 {
2972         int rc = 0, using_dac, i;
2973         struct net_device *netdev;
2974         struct jme_adapter *jme;
2975         u16 bmcr, bmsr;
2976         u32 apmc;
2977
2978         /*
2979          * set up PCI device basics
2980          */
2981         pci_disable_link_state(pdev, PCIE_LINK_STATE_L0S | PCIE_LINK_STATE_L1 |
2982                                PCIE_LINK_STATE_CLKPM);
2983
2984         rc = pci_enable_device(pdev);
2985         if (rc) {
2986                 pr_err("Cannot enable PCI device\n");
2987                 goto err_out;
2988         }
2989
2990         using_dac = jme_pci_dma64(pdev);
2991         if (using_dac < 0) {
2992                 pr_err("Cannot set PCI DMA Mask\n");
2993                 rc = -EIO;
2994                 goto err_out_disable_pdev;
2995         }
2996
2997         if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
2998                 pr_err("No PCI resource region found\n");
2999                 rc = -ENOMEM;
3000                 goto err_out_disable_pdev;
3001         }
3002
3003         rc = pci_request_regions(pdev, DRV_NAME);
3004         if (rc) {
3005                 pr_err("Cannot obtain PCI resource region\n");
3006                 goto err_out_disable_pdev;
3007         }
3008
3009         pci_set_master(pdev);
3010
3011         /*
3012          * alloc and init net device
3013          */
3014         netdev = alloc_etherdev(sizeof(*jme));
3015         if (!netdev) {
3016                 rc = -ENOMEM;
3017                 goto err_out_release_regions;
3018         }
3019         netdev->netdev_ops = &jme_netdev_ops;
3020         netdev->ethtool_ops             = &jme_ethtool_ops;
3021         netdev->watchdog_timeo          = TX_TIMEOUT;
3022         netdev->hw_features             =       NETIF_F_IP_CSUM |
3023                                                 NETIF_F_IPV6_CSUM |
3024                                                 NETIF_F_SG |
3025                                                 NETIF_F_TSO |
3026                                                 NETIF_F_TSO6 |
3027                                                 NETIF_F_RXCSUM;
3028         netdev->features                =       NETIF_F_IP_CSUM |
3029                                                 NETIF_F_IPV6_CSUM |
3030                                                 NETIF_F_SG |
3031                                                 NETIF_F_TSO |
3032                                                 NETIF_F_TSO6 |
3033                                                 NETIF_F_HW_VLAN_CTAG_TX |
3034                                                 NETIF_F_HW_VLAN_CTAG_RX;
3035         if (using_dac)
3036                 netdev->features        |=      NETIF_F_HIGHDMA;
3037
3038         SET_NETDEV_DEV(netdev, &pdev->dev);
3039         pci_set_drvdata(pdev, netdev);
3040
3041         /*
3042          * init adapter info
3043          */
3044         jme = netdev_priv(netdev);
3045         jme->pdev = pdev;
3046         jme->dev = netdev;
3047         jme->jme_rx = netif_rx;
3048         jme->old_mtu = netdev->mtu = 1500;
3049         jme->phylink = 0;
3050         jme->tx_ring_size = 1 << 10;
3051         jme->tx_ring_mask = jme->tx_ring_size - 1;
3052         jme->tx_wake_threshold = 1 << 9;
3053         jme->rx_ring_size = 1 << 9;
3054         jme->rx_ring_mask = jme->rx_ring_size - 1;
3055         jme->msg_enable = JME_DEF_MSG_ENABLE;
3056         jme->regs = ioremap(pci_resource_start(pdev, 0),
3057                              pci_resource_len(pdev, 0));
3058         if (!(jme->regs)) {
3059                 pr_err("Mapping PCI resource region error\n");
3060                 rc = -ENOMEM;
3061                 goto err_out_free_netdev;
3062         }
3063
3064         if (no_pseudohp) {
3065                 apmc = jread32(jme, JME_APMC) & ~JME_APMC_PSEUDO_HP_EN;
3066                 jwrite32(jme, JME_APMC, apmc);
3067         } else if (force_pseudohp) {
3068                 apmc = jread32(jme, JME_APMC) | JME_APMC_PSEUDO_HP_EN;
3069                 jwrite32(jme, JME_APMC, apmc);
3070         }
3071
3072         NETIF_NAPI_SET(netdev, &jme->napi, jme_poll, NAPI_POLL_WEIGHT)
3073
3074         spin_lock_init(&jme->phy_lock);
3075         spin_lock_init(&jme->macaddr_lock);
3076         spin_lock_init(&jme->rxmcs_lock);
3077
3078         atomic_set(&jme->link_changing, 1);
3079         atomic_set(&jme->rx_cleaning, 1);
3080         atomic_set(&jme->tx_cleaning, 1);
3081         atomic_set(&jme->rx_empty, 1);
3082
3083         tasklet_init(&jme->pcc_task,
3084                      jme_pcc_tasklet,
3085                      (unsigned long) jme);
3086         jme->dpi.cur = PCC_P1;
3087
3088         jme->reg_ghc = 0;
3089         jme->reg_rxcs = RXCS_DEFAULT;
3090         jme->reg_rxmcs = RXMCS_DEFAULT;
3091         jme->reg_txpfc = 0;
3092         jme->reg_pmcs = PMCS_MFEN;
3093         jme->reg_gpreg1 = GPREG1_DEFAULT;
3094
3095         if (jme->reg_rxmcs & RXMCS_CHECKSUM)
3096                 netdev->features |= NETIF_F_RXCSUM;
3097
3098         /*
3099          * Get Max Read Req Size from PCI Config Space
3100          */
3101         pci_read_config_byte(pdev, PCI_DCSR_MRRS, &jme->mrrs);
3102         jme->mrrs &= PCI_DCSR_MRRS_MASK;
3103         switch (jme->mrrs) {
3104         case MRRS_128B:
3105                 jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_128B;
3106                 break;
3107         case MRRS_256B:
3108                 jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_256B;
3109                 break;
3110         default:
3111                 jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_512B;
3112                 break;
3113         }
3114
3115         /*
3116          * Must check before reset_mac_processor
3117          */
3118         jme_check_hw_ver(jme);
3119         jme->mii_if.dev = netdev;
3120         if (jme->fpgaver) {
3121                 jme->mii_if.phy_id = 0;
3122                 for (i = 1 ; i < 32 ; ++i) {
3123                         bmcr = jme_mdio_read(netdev, i, MII_BMCR);
3124                         bmsr = jme_mdio_read(netdev, i, MII_BMSR);
3125                         if (bmcr != 0xFFFFU && (bmcr != 0 || bmsr != 0)) {
3126                                 jme->mii_if.phy_id = i;
3127                                 break;
3128                         }
3129                 }
3130
3131                 if (!jme->mii_if.phy_id) {
3132                         rc = -EIO;
3133                         pr_err("Can not find phy_id\n");
3134                         goto err_out_unmap;
3135                 }
3136
3137                 jme->reg_ghc |= GHC_LINK_POLL;
3138         } else {
3139                 jme->mii_if.phy_id = 1;
3140         }
3141         if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250)
3142                 jme->mii_if.supports_gmii = true;
3143         else
3144                 jme->mii_if.supports_gmii = false;
3145         jme->mii_if.phy_id_mask = 0x1F;
3146         jme->mii_if.reg_num_mask = 0x1F;
3147         jme->mii_if.mdio_read = jme_mdio_read;
3148         jme->mii_if.mdio_write = jme_mdio_write;
3149
3150         jme_clear_pm(jme);
3151         device_set_wakeup_enable(&pdev->dev, true);
3152
3153         jme_set_phyfifo_5level(jme);
3154         jme->pcirev = pdev->revision;
3155         if (!jme->fpgaver)
3156                 jme_phy_init(jme);
3157         jme_phy_off(jme);
3158
3159         /*
3160          * Reset MAC processor and reload EEPROM for MAC Address
3161          */
3162         jme_reset_mac_processor(jme);
3163         rc = jme_reload_eeprom(jme);
3164         if (rc) {
3165                 pr_err("Reload eeprom for reading MAC Address error\n");
3166                 goto err_out_unmap;
3167         }
3168         jme_load_macaddr(netdev);
3169
3170         /*
3171          * Tell stack that we are not ready to work until open()
3172          */
3173         netif_carrier_off(netdev);
3174
3175         rc = register_netdev(netdev);
3176         if (rc) {
3177                 pr_err("Cannot register net device\n");
3178                 goto err_out_unmap;
3179         }
3180
3181         netif_info(jme, probe, jme->dev, "%s%s chiprev:%x pcirev:%x macaddr:%pM\n",
3182                    (jme->pdev->device == PCI_DEVICE_ID_JMICRON_JMC250) ?
3183                    "JMC250 Gigabit Ethernet" :
3184                    (jme->pdev->device == PCI_DEVICE_ID_JMICRON_JMC260) ?
3185                    "JMC260 Fast Ethernet" : "Unknown",
3186                    (jme->fpgaver != 0) ? " (FPGA)" : "",
3187                    (jme->fpgaver != 0) ? jme->fpgaver : jme->chiprev,
3188                    jme->pcirev, netdev->dev_addr);
3189
3190         return 0;
3191
3192 err_out_unmap:
3193         iounmap(jme->regs);
3194 err_out_free_netdev:
3195         free_netdev(netdev);
3196 err_out_release_regions:
3197         pci_release_regions(pdev);
3198 err_out_disable_pdev:
3199         pci_disable_device(pdev);
3200 err_out:
3201         return rc;
3202 }
3203
3204 static void
3205 jme_remove_one(struct pci_dev *pdev)
3206 {
3207         struct net_device *netdev = pci_get_drvdata(pdev);
3208         struct jme_adapter *jme = netdev_priv(netdev);
3209
3210         unregister_netdev(netdev);
3211         iounmap(jme->regs);
3212         free_netdev(netdev);
3213         pci_release_regions(pdev);
3214         pci_disable_device(pdev);
3215
3216 }
3217
3218 static void
3219 jme_shutdown(struct pci_dev *pdev)
3220 {
3221         struct net_device *netdev = pci_get_drvdata(pdev);
3222         struct jme_adapter *jme = netdev_priv(netdev);
3223
3224         jme_powersave_phy(jme);
3225         pci_pme_active(pdev, true);
3226 }
3227
3228 #ifdef CONFIG_PM_SLEEP
3229 static int
3230 jme_suspend(struct device *dev)
3231 {
3232         struct pci_dev *pdev = to_pci_dev(dev);
3233         struct net_device *netdev = pci_get_drvdata(pdev);
3234         struct jme_adapter *jme = netdev_priv(netdev);
3235
3236         if (!netif_running(netdev))
3237                 return 0;
3238
3239         atomic_dec(&jme->link_changing);
3240
3241         netif_device_detach(netdev);
3242         netif_stop_queue(netdev);
3243         jme_stop_irq(jme);
3244
3245         tasklet_disable(&jme->txclean_task);
3246         tasklet_disable(&jme->rxclean_task);
3247         tasklet_disable(&jme->rxempty_task);
3248
3249         if (netif_carrier_ok(netdev)) {
3250                 if (test_bit(JME_FLAG_POLL, &jme->flags))
3251                         jme_polling_mode(jme);
3252
3253                 jme_stop_pcc_timer(jme);
3254                 jme_disable_rx_engine(jme);
3255                 jme_disable_tx_engine(jme);
3256                 jme_reset_mac_processor(jme);
3257                 jme_free_rx_resources(jme);
3258                 jme_free_tx_resources(jme);
3259                 netif_carrier_off(netdev);
3260                 jme->phylink = 0;
3261         }
3262
3263         tasklet_enable(&jme->txclean_task);
3264         tasklet_hi_enable(&jme->rxclean_task);
3265         tasklet_hi_enable(&jme->rxempty_task);
3266
3267         jme_powersave_phy(jme);
3268
3269         return 0;
3270 }
3271
3272 static int
3273 jme_resume(struct device *dev)
3274 {
3275         struct pci_dev *pdev = to_pci_dev(dev);
3276         struct net_device *netdev = pci_get_drvdata(pdev);
3277         struct jme_adapter *jme = netdev_priv(netdev);
3278
3279         if (!netif_running(netdev))
3280                 return 0;
3281
3282         jme_clear_pm(jme);
3283         jme_phy_on(jme);
3284         if (test_bit(JME_FLAG_SSET, &jme->flags))
3285                 jme_set_settings(netdev, &jme->old_ecmd);
3286         else
3287                 jme_reset_phy_processor(jme);
3288         jme_phy_calibration(jme);
3289         jme_phy_setEA(jme);
3290         jme_start_irq(jme);
3291         netif_device_attach(netdev);
3292
3293         atomic_inc(&jme->link_changing);
3294
3295         jme_reset_link(jme);
3296
3297         return 0;
3298 }
3299
3300 static SIMPLE_DEV_PM_OPS(jme_pm_ops, jme_suspend, jme_resume);
3301 #define JME_PM_OPS (&jme_pm_ops)
3302
3303 #else
3304
3305 #define JME_PM_OPS NULL
3306 #endif
3307
3308 static DEFINE_PCI_DEVICE_TABLE(jme_pci_tbl) = {
3309         { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMC250) },
3310         { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMC260) },
3311         { }
3312 };
3313
3314 static struct pci_driver jme_driver = {
3315         .name           = DRV_NAME,
3316         .id_table       = jme_pci_tbl,
3317         .probe          = jme_init_one,
3318         .remove         = jme_remove_one,
3319         .shutdown       = jme_shutdown,
3320         .driver.pm      = JME_PM_OPS,
3321 };
3322
3323 static int __init
3324 jme_init_module(void)
3325 {
3326         pr_info("JMicron JMC2XX ethernet driver version %s\n", DRV_VERSION);
3327         return pci_register_driver(&jme_driver);
3328 }
3329
3330 static void __exit
3331 jme_cleanup_module(void)
3332 {
3333         pci_unregister_driver(&jme_driver);
3334 }
3335
3336 module_init(jme_init_module);
3337 module_exit(jme_cleanup_module);
3338
3339 MODULE_AUTHOR("Guo-Fu Tseng <cooldavid@cooldavid.org>");
3340 MODULE_DESCRIPTION("JMicron JMC2x0 PCI Express Ethernet driver");
3341 MODULE_LICENSE("GPL");
3342 MODULE_VERSION(DRV_VERSION);
3343 MODULE_DEVICE_TABLE(pci, jme_pci_tbl);