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 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_enable_wol(struct jme_adapter *jme)
 274 {
 275         jwrite32(jme, JME_PMCS, PMCS_STMASK | jme->reg_pmcs);
 276 }
 277
 278 static inline void
 279 jme_clear_pm_disable_wol(struct jme_adapter *jme)
 280 {
 281         jwrite32(jme, JME_PMCS, PMCS_STMASK);
 282 }
 283
 284 static int
 285 jme_reload_eeprom(struct jme_adapter *jme)
 286 {
 287         u32 val;
 288         int i;
 289
 290         val = jread32(jme, JME_SMBCSR);
 291
 292         if (val & SMBCSR_EEPROMD) {
 293                 val |= SMBCSR_CNACK;
 294                 jwrite32(jme, JME_SMBCSR, val);
 295                 val |= SMBCSR_RELOAD;
 296                 jwrite32(jme, JME_SMBCSR, val);
 297                 mdelay(12);
 298
 299                 for (i = JME_EEPROM_RELOAD_TIMEOUT; i > 0; --i) {
 300                         mdelay(1);
 301                         if ((jread32(jme, JME_SMBCSR) & SMBCSR_RELOAD) == 0)
 302                                 break;
 303                 }
 304
 305                 if (i == 0) {
 306                         pr_err("eeprom reload timeout\n");
 307                         return -EIO;
 308                 }
 309         }
 310
 311         return 0;
 312 }
 313
 314 static void
 315 jme_load_macaddr(struct net_device *netdev)
 316 {
 317         struct jme_adapter *jme = netdev_priv(netdev);
 318         unsigned char macaddr[ETH_ALEN];
 319         u32 val;
 320
 321         spin_lock_bh(&jme->macaddr_lock);
 322         val = jread32(jme, JME_RXUMA_LO);
 323         macaddr[0] = (val >>  0) & 0xFF;
 324         macaddr[1] = (val >>  8) & 0xFF;
 325         macaddr[2] = (val >> 16) & 0xFF;
 326         macaddr[3] = (val >> 24) & 0xFF;
 327         val = jread32(jme, JME_RXUMA_HI);
 328         macaddr[4] = (val >>  0) & 0xFF;
 329         macaddr[5] = (val >>  8) & 0xFF;
 330         memcpy(netdev->dev_addr, macaddr, ETH_ALEN);
 331         spin_unlock_bh(&jme->macaddr_lock);
 332 }
 333
 334 static inline void
 335 jme_set_rx_pcc(struct jme_adapter *jme, int p)
 336 {
 337         switch (p) {
 338         case PCC_OFF:
 339                 jwrite32(jme, JME_PCCRX0,
 340                         ((PCC_OFF_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
 341                         ((PCC_OFF_CNT << PCCRX_SHIFT) & PCCRX_MASK));
 342                 break;
 343         case PCC_P1:
 344                 jwrite32(jme, JME_PCCRX0,
 345                         ((PCC_P1_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
 346                         ((PCC_P1_CNT << PCCRX_SHIFT) & PCCRX_MASK));
 347                 break;
 348         case PCC_P2:
 349                 jwrite32(jme, JME_PCCRX0,
 350                         ((PCC_P2_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
 351                         ((PCC_P2_CNT << PCCRX_SHIFT) & PCCRX_MASK));
 352                 break;
 353         case PCC_P3:
 354                 jwrite32(jme, JME_PCCRX0,
 355                         ((PCC_P3_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
 356                         ((PCC_P3_CNT << PCCRX_SHIFT) & PCCRX_MASK));
 357                 break;
 358         default:
 359                 break;
 360         }
 361         wmb();
 362
 363         if (!(test_bit(JME_FLAG_POLL, &jme->flags)))
 364                 netif_info(jme, rx_status, jme->dev, "Switched to PCC_P%d\n", p);
 365 }
 366
 367 static void
 368 jme_start_irq(struct jme_adapter *jme)
 369 {
 370         register struct dynpcc_info *dpi = &(jme->dpi);
 371
 372         jme_set_rx_pcc(jme, PCC_P1);
 373         dpi->cur                = PCC_P1;
 374         dpi->attempt            = PCC_P1;
 375         dpi->cnt                = 0;
 376
 377         jwrite32(jme, JME_PCCTX,
 378                         ((PCC_TX_TO << PCCTXTO_SHIFT) & PCCTXTO_MASK) |
 379                         ((PCC_TX_CNT << PCCTX_SHIFT) & PCCTX_MASK) |
 380                         PCCTXQ0_EN
 381                 );
 382
 383         /*
 384          * Enable Interrupts
 385          */
 386         jwrite32(jme, JME_IENS, INTR_ENABLE);
 387 }
 388
 389 static inline void
 390 jme_stop_irq(struct jme_adapter *jme)
 391 {
 392         /*
 393          * Disable Interrupts
 394          */
 395         jwrite32f(jme, JME_IENC, INTR_ENABLE);
 396 }
 397
 398 static u32
 399 jme_linkstat_from_phy(struct jme_adapter *jme)
 400 {
 401         u32 phylink, bmsr;
 402
 403         phylink = jme_mdio_read(jme->dev, jme->mii_if.phy_id, 17);
 404         bmsr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMSR);
 405         if (bmsr & BMSR_ANCOMP)
 406                 phylink |= PHY_LINK_AUTONEG_COMPLETE;
 407
 408         return phylink;
 409 }
 410
 411 static inline void
 412 jme_set_phyfifo_5level(struct jme_adapter *jme)
 413 {
 414         jme_mdio_write(jme->dev, jme->mii_if.phy_id, 27, 0x0004);
 415 }
 416
 417 static inline void
 418 jme_set_phyfifo_8level(struct jme_adapter *jme)
 419 {
 420         jme_mdio_write(jme->dev, jme->mii_if.phy_id, 27, 0x0000);
 421 }
 422
 423 static int
 424 jme_check_link(struct net_device *netdev, int testonly)
 425 {
 426         struct jme_adapter *jme = netdev_priv(netdev);
 427         u32 phylink, cnt = JME_SPDRSV_TIMEOUT, bmcr;
 428         char linkmsg[64];
 429         int rc = 0;
 430
 431         linkmsg[0] = '\0';
 432
 433         if (jme->fpgaver)
 434                 phylink = jme_linkstat_from_phy(jme);
 435         else
 436                 phylink = jread32(jme, JME_PHY_LINK);
 437
 438         if (phylink & PHY_LINK_UP) {
 439                 if (!(phylink & PHY_LINK_AUTONEG_COMPLETE)) {
 440                         /*
 441                          * If we did not enable AN
 442                          * Speed/Duplex Info should be obtained from SMI
 443                          */
 444                         phylink = PHY_LINK_UP;
 445
 446                         bmcr = jme_mdio_read(jme->dev,
 447                                                 jme->mii_if.phy_id,
 448                                                 MII_BMCR);
 449
 450                         phylink |= ((bmcr & BMCR_SPEED1000) &&
 451                                         (bmcr & BMCR_SPEED100) == 0) ?
 452                                         PHY_LINK_SPEED_1000M :
 453                                         (bmcr & BMCR_SPEED100) ?
 454                                         PHY_LINK_SPEED_100M :
 455                                         PHY_LINK_SPEED_10M;
 456
 457                         phylink |= (bmcr & BMCR_FULLDPLX) ?
 458                                          PHY_LINK_DUPLEX : 0;
 459
 460                         strcat(linkmsg, "Forced: ");
 461                 } else {
 462                         /*
 463                          * Keep polling for speed/duplex resolve complete
 464                          */
 465                         while (!(phylink & PHY_LINK_SPEEDDPU_RESOLVED) &&
 466                                 --cnt) {
 467
 468                                 udelay(1);
 469
 470                                 if (jme->fpgaver)
 471                                         phylink = jme_linkstat_from_phy(jme);
 472                                 else
 473                                         phylink = jread32(jme, JME_PHY_LINK);
 474                         }
 475                         if (!cnt)
 476                                 pr_err("Waiting speed resolve timeout\n");
 477
 478                         strcat(linkmsg, "ANed: ");
 479                 }
 480
 481                 if (jme->phylink == phylink) {
 482                         rc = 1;
 483                         goto out;
 484                 }
 485                 if (testonly)
 486                         goto out;
 487
 488                 jme->phylink = phylink;
 489
 490                 /*
 491                  * The speed/duplex setting of jme->reg_ghc already cleared
 492                  * by jme_reset_mac_processor()
 493                  */
 494                 switch (phylink & PHY_LINK_SPEED_MASK) {
 495                 case PHY_LINK_SPEED_10M:
 496                         jme->reg_ghc |= GHC_SPEED_10M;
 497                         strcat(linkmsg, "10 Mbps, ");
 498                         break;
 499                 case PHY_LINK_SPEED_100M:
 500                         jme->reg_ghc |= GHC_SPEED_100M;
 501                         strcat(linkmsg, "100 Mbps, ");
 502                         break;
 503                 case PHY_LINK_SPEED_1000M:
 504                         jme->reg_ghc |= GHC_SPEED_1000M;
 505                         strcat(linkmsg, "1000 Mbps, ");
 506                         break;
 507                 default:
 508                         break;
 509                 }
 510
 511                 if (phylink & PHY_LINK_DUPLEX) {
 512                         jwrite32(jme, JME_TXMCS, TXMCS_DEFAULT);
 513                         jwrite32(jme, JME_TXTRHD, TXTRHD_FULLDUPLEX);
 514                         jme->reg_ghc |= GHC_DPX;
 515                 } else {
 516                         jwrite32(jme, JME_TXMCS, TXMCS_DEFAULT |
 517                                                 TXMCS_BACKOFF |
 518                                                 TXMCS_CARRIERSENSE |
 519                                                 TXMCS_COLLISION);
 520                         jwrite32(jme, JME_TXTRHD, TXTRHD_HALFDUPLEX);
 521                 }
 522
 523                 jwrite32(jme, JME_GHC, jme->reg_ghc);
 524
 525                 if (is_buggy250(jme->pdev->device, jme->chiprev)) {
 526                         jme->reg_gpreg1 &= ~(GPREG1_HALFMODEPATCH |
 527                                              GPREG1_RSSPATCH);
 528                         if (!(phylink & PHY_LINK_DUPLEX))
 529                                 jme->reg_gpreg1 |= GPREG1_HALFMODEPATCH;
 530                         switch (phylink & PHY_LINK_SPEED_MASK) {
 531                         case PHY_LINK_SPEED_10M:
 532                                 jme_set_phyfifo_8level(jme);
 533                                 jme->reg_gpreg1 |= GPREG1_RSSPATCH;
 534                                 break;
 535                         case PHY_LINK_SPEED_100M:
 536                                 jme_set_phyfifo_5level(jme);
 537                                 jme->reg_gpreg1 |= GPREG1_RSSPATCH;
 538                                 break;
 539                         case PHY_LINK_SPEED_1000M:
 540                                 jme_set_phyfifo_8level(jme);
 541                                 break;
 542                         default:
 543                                 break;
 544                         }
 545                 }
 546                 jwrite32(jme, JME_GPREG1, jme->reg_gpreg1);
 547
 548                 strcat(linkmsg, (phylink & PHY_LINK_DUPLEX) ?
 549                                         "Full-Duplex, " :
 550                                         "Half-Duplex, ");
 551                 strcat(linkmsg, (phylink & PHY_LINK_MDI_STAT) ?
 552                                         "MDI-X" :
 553                                         "MDI");
 554                 netif_info(jme, link, jme->dev, "Link is up at %s\n", linkmsg);
 555                 netif_carrier_on(netdev);
 556         } else {
 557                 if (testonly)
 558                         goto out;
 559
 560                 netif_info(jme, link, jme->dev, "Link is down\n");
 561                 jme->phylink = 0;
 562                 netif_carrier_off(netdev);
 563         }
 564
 565 out:
 566         return rc;
 567 }
 568
 569 static int
 570 jme_setup_tx_resources(struct jme_adapter *jme)
 571 {
 572         struct jme_ring *txring = &(jme->txring[0]);
 573
 574         txring->alloc = dma_alloc_coherent(&(jme->pdev->dev),
 575                                    TX_RING_ALLOC_SIZE(jme->tx_ring_size),
 576                                    &(txring->dmaalloc),
 577                                    GFP_ATOMIC);
 578
 579         if (!txring->alloc)
 580                 goto err_set_null;
 581
 582         /*
 583          * 16 Bytes align
 584          */
 585         txring->desc            = (void *)ALIGN((unsigned long)(txring->alloc),
 586                                                 RING_DESC_ALIGN);
 587         txring->dma             = ALIGN(txring->dmaalloc, RING_DESC_ALIGN);
 588         txring->next_to_use     = 0;
 589         atomic_set(&txring->next_to_clean, 0);
 590         atomic_set(&txring->nr_free, jme->tx_ring_size);
 591
 592         txring->bufinf          = kcalloc(jme->tx_ring_size,
 593                                                 sizeof(struct jme_buffer_info),
 594                                                 GFP_ATOMIC);
 595         if (unlikely(!(txring->bufinf)))
 596                 goto err_free_txring;
 597
 598         /*
 599          * Initialize Transmit Descriptors
 600          */
 601         memset(txring->alloc, 0, TX_RING_ALLOC_SIZE(jme->tx_ring_size));
 602
 603         return 0;
 604
 605 err_free_txring:
 606         dma_free_coherent(&(jme->pdev->dev),
 607                           TX_RING_ALLOC_SIZE(jme->tx_ring_size),
 608                           txring->alloc,
 609                           txring->dmaalloc);
 610
 611 err_set_null:
 612         txring->desc = NULL;
 613         txring->dmaalloc = 0;
 614         txring->dma = 0;
 615         txring->bufinf = NULL;
 616
 617         return -ENOMEM;
 618 }
 619
 620 static void
 621 jme_free_tx_resources(struct jme_adapter *jme)
 622 {
 623         int i;
 624         struct jme_ring *txring = &(jme->txring[0]);
 625         struct jme_buffer_info *txbi;
 626
 627         if (txring->alloc) {
 628                 if (txring->bufinf) {
 629                         for (i = 0 ; i < jme->tx_ring_size ; ++i) {
 630                                 txbi = txring->bufinf + i;
 631                                 if (txbi->skb) {
 632                                         dev_kfree_skb(txbi->skb);
 633                                         txbi->skb = NULL;
 634                                 }
 635                                 txbi->mapping           = 0;
 636                                 txbi->len               = 0;
 637                                 txbi->nr_desc           = 0;
 638                                 txbi->start_xmit        = 0;
 639                         }
 640                         kfree(txring->bufinf);
 641                 }
 642
 643                 dma_free_coherent(&(jme->pdev->dev),
 644                                   TX_RING_ALLOC_SIZE(jme->tx_ring_size),
 645                                   txring->alloc,
 646                                   txring->dmaalloc);
 647
 648                 txring->alloc           = NULL;
 649                 txring->desc            = NULL;
 650                 txring->dmaalloc        = 0;
 651                 txring->dma             = 0;
 652                 txring->bufinf          = NULL;
 653         }
 654         txring->next_to_use     = 0;
 655         atomic_set(&txring->next_to_clean, 0);
 656         atomic_set(&txring->nr_free, 0);
 657 }
 658
 659 static inline void
 660 jme_enable_tx_engine(struct jme_adapter *jme)
 661 {
 662         /*
 663          * Select Queue 0
 664          */
 665         jwrite32(jme, JME_TXCS, TXCS_DEFAULT | TXCS_SELECT_QUEUE0);
 666         wmb();
 667
 668         /*
 669          * Setup TX Queue 0 DMA Bass Address
 670          */
 671         jwrite32(jme, JME_TXDBA_LO, (__u64)jme->txring[0].dma & 0xFFFFFFFFUL);
 672         jwrite32(jme, JME_TXDBA_HI, (__u64)(jme->txring[0].dma) >> 32);
 673         jwrite32(jme, JME_TXNDA, (__u64)jme->txring[0].dma & 0xFFFFFFFFUL);
 674
 675         /*
 676          * Setup TX Descptor Count
 677          */
 678         jwrite32(jme, JME_TXQDC, jme->tx_ring_size);
 679
 680         /*
 681          * Enable TX Engine
 682          */
 683         wmb();
 684         jwrite32f(jme, JME_TXCS, jme->reg_txcs |
 685                                 TXCS_SELECT_QUEUE0 |
 686                                 TXCS_ENABLE);
 687
 688         /*
 689          * Start clock for TX MAC Processor
 690          */
 691         jme_mac_txclk_on(jme);
 692 }
 693
 694 static inline void
 695 jme_disable_tx_engine(struct jme_adapter *jme)
 696 {
 697         int i;
 698         u32 val;
 699
 700         /*
 701          * Disable TX Engine
 702          */
 703         jwrite32(jme, JME_TXCS, jme->reg_txcs | TXCS_SELECT_QUEUE0);
 704         wmb();
 705
 706         val = jread32(jme, JME_TXCS);
 707         for (i = JME_TX_DISABLE_TIMEOUT ; (val & TXCS_ENABLE) && i > 0 ; --i) {
 708                 mdelay(1);
 709                 val = jread32(jme, JME_TXCS);
 710                 rmb();
 711         }
 712
 713         if (!i)
 714                 pr_err("Disable TX engine timeout\n");
 715
 716         /*
 717          * Stop clock for TX MAC Processor
 718          */
 719         jme_mac_txclk_off(jme);
 720 }
 721
 722 static void
 723 jme_set_clean_rxdesc(struct jme_adapter *jme, int i)
 724 {
 725         struct jme_ring *rxring = &(jme->rxring[0]);
 726         register struct rxdesc *rxdesc = rxring->desc;
 727         struct jme_buffer_info *rxbi = rxring->bufinf;
 728         rxdesc += i;
 729         rxbi += i;
 730
 731         rxdesc->dw[0] = 0;
 732         rxdesc->dw[1] = 0;
 733         rxdesc->desc1.bufaddrh  = cpu_to_le32((__u64)rxbi->mapping >> 32);
 734         rxdesc->desc1.bufaddrl  = cpu_to_le32(
 735                                         (__u64)rxbi->mapping & 0xFFFFFFFFUL);
 736         rxdesc->desc1.datalen   = cpu_to_le16(rxbi->len);
 737         if (jme->dev->features & NETIF_F_HIGHDMA)
 738                 rxdesc->desc1.flags = RXFLAG_64BIT;
 739         wmb();
 740         rxdesc->desc1.flags     |= RXFLAG_OWN | RXFLAG_INT;
 741 }
 742
 743 static int
 744 jme_make_new_rx_buf(struct jme_adapter *jme, int i)
 745 {
 746         struct jme_ring *rxring = &(jme->rxring[0]);
 747         struct jme_buffer_info *rxbi = rxring->bufinf + i;
 748         struct sk_buff *skb;
 749         dma_addr_t mapping;
 750
 751         skb = netdev_alloc_skb(jme->dev,
 752                 jme->dev->mtu + RX_EXTRA_LEN);
 753         if (unlikely(!skb))
 754                 return -ENOMEM;
 755
 756         mapping = pci_map_page(jme->pdev, virt_to_page(skb->data),
 757                                offset_in_page(skb->data), skb_tailroom(skb),
 758                                PCI_DMA_FROMDEVICE);
 759         if (unlikely(pci_dma_mapping_error(jme->pdev, mapping))) {
 760                 dev_kfree_skb(skb);
 761                 return -ENOMEM;
 762         }
 763
 764         if (likely(rxbi->mapping))
 765                 pci_unmap_page(jme->pdev, rxbi->mapping,
 766                                rxbi->len, PCI_DMA_FROMDEVICE);
 767
 768         rxbi->skb = skb;
 769         rxbi->len = skb_tailroom(skb);
 770         rxbi->mapping = mapping;
 771         return 0;
 772 }
 773
 774 static void
 775 jme_free_rx_buf(struct jme_adapter *jme, int i)
 776 {
 777         struct jme_ring *rxring = &(jme->rxring[0]);
 778         struct jme_buffer_info *rxbi = rxring->bufinf;
 779         rxbi += i;
 780
 781         if (rxbi->skb) {
 782                 pci_unmap_page(jme->pdev,
 783                                  rxbi->mapping,
 784                                  rxbi->len,
 785                                  PCI_DMA_FROMDEVICE);
 786                 dev_kfree_skb(rxbi->skb);
 787                 rxbi->skb = NULL;
 788                 rxbi->mapping = 0;
 789                 rxbi->len = 0;
 790         }
 791 }
 792
 793 static void
 794 jme_free_rx_resources(struct jme_adapter *jme)
 795 {
 796         int i;
 797         struct jme_ring *rxring = &(jme->rxring[0]);
 798
 799         if (rxring->alloc) {
 800                 if (rxring->bufinf) {
 801                         for (i = 0 ; i < jme->rx_ring_size ; ++i)
 802                                 jme_free_rx_buf(jme, i);
 803                         kfree(rxring->bufinf);
 804                 }
 805
 806                 dma_free_coherent(&(jme->pdev->dev),
 807                                   RX_RING_ALLOC_SIZE(jme->rx_ring_size),
 808                                   rxring->alloc,
 809                                   rxring->dmaalloc);
 810                 rxring->alloc    = NULL;
 811                 rxring->desc     = NULL;
 812                 rxring->dmaalloc = 0;
 813                 rxring->dma      = 0;
 814                 rxring->bufinf   = NULL;
 815         }
 816         rxring->next_to_use   = 0;
 817         atomic_set(&rxring->next_to_clean, 0);
 818 }
 819
 820 static int
 821 jme_setup_rx_resources(struct jme_adapter *jme)
 822 {
 823         int i;
 824         struct jme_ring *rxring = &(jme->rxring[0]);
 825
 826         rxring->alloc = dma_alloc_coherent(&(jme->pdev->dev),
 827                                    RX_RING_ALLOC_SIZE(jme->rx_ring_size),
 828                                    &(rxring->dmaalloc),
 829                                    GFP_ATOMIC);
 830         if (!rxring->alloc)
 831                 goto err_set_null;
 832
 833         /*
 834          * 16 Bytes align
 835          */
 836         rxring->desc            = (void *)ALIGN((unsigned long)(rxring->alloc),
 837                                                 RING_DESC_ALIGN);
 838         rxring->dma             = ALIGN(rxring->dmaalloc, RING_DESC_ALIGN);
 839         rxring->next_to_use     = 0;
 840         atomic_set(&rxring->next_to_clean, 0);
 841
 842         rxring->bufinf          = kcalloc(jme->rx_ring_size,
 843                                                 sizeof(struct jme_buffer_info),
 844                                                 GFP_ATOMIC);
 845         if (unlikely(!(rxring->bufinf)))
 846                 goto err_free_rxring;
 847
 848         /*
 849          * Initiallize Receive Descriptors
 850          */
 851         for (i = 0 ; i < jme->rx_ring_size ; ++i) {
 852                 if (unlikely(jme_make_new_rx_buf(jme, i))) {
 853                         jme_free_rx_resources(jme);
 854                         return -ENOMEM;
 855                 }
 856
 857                 jme_set_clean_rxdesc(jme, i);
 858         }
 859
 860         return 0;
 861
 862 err_free_rxring:
 863         dma_free_coherent(&(jme->pdev->dev),
 864                           RX_RING_ALLOC_SIZE(jme->rx_ring_size),
 865                           rxring->alloc,
 866                           rxring->dmaalloc);
 867 err_set_null:
 868         rxring->desc = NULL;
 869         rxring->dmaalloc = 0;
 870         rxring->dma = 0;
 871         rxring->bufinf = NULL;
 872
 873         return -ENOMEM;
 874 }
 875
 876 static inline void
 877 jme_enable_rx_engine(struct jme_adapter *jme)
 878 {
 879         /*
 880          * Select Queue 0
 881          */
 882         jwrite32(jme, JME_RXCS, jme->reg_rxcs |
 883                                 RXCS_QUEUESEL_Q0);
 884         wmb();
 885
 886         /*
 887          * Setup RX DMA Bass Address
 888          */
 889         jwrite32(jme, JME_RXDBA_LO, (__u64)(jme->rxring[0].dma) & 0xFFFFFFFFUL);
 890         jwrite32(jme, JME_RXDBA_HI, (__u64)(jme->rxring[0].dma) >> 32);
 891         jwrite32(jme, JME_RXNDA, (__u64)(jme->rxring[0].dma) & 0xFFFFFFFFUL);
 892
 893         /*
 894          * Setup RX Descriptor Count
 895          */
 896         jwrite32(jme, JME_RXQDC, jme->rx_ring_size);
 897
 898         /*
 899          * Setup Unicast Filter
 900          */
 901         jme_set_unicastaddr(jme->dev);
 902         jme_set_multi(jme->dev);
 903
 904         /*
 905          * Enable RX Engine
 906          */
 907         wmb();
 908         jwrite32f(jme, JME_RXCS, jme->reg_rxcs |
 909                                 RXCS_QUEUESEL_Q0 |
 910                                 RXCS_ENABLE |
 911                                 RXCS_QST);
 912
 913         /*
 914          * Start clock for RX MAC Processor
 915          */
 916         jme_mac_rxclk_on(jme);
 917 }
 918
 919 static inline void
 920 jme_restart_rx_engine(struct jme_adapter *jme)
 921 {
 922         /*
 923          * Start RX Engine
 924          */
 925         jwrite32(jme, JME_RXCS, jme->reg_rxcs |
 926                                 RXCS_QUEUESEL_Q0 |
 927                                 RXCS_ENABLE |
 928                                 RXCS_QST);
 929 }
 930
 931 static inline void
 932 jme_disable_rx_engine(struct jme_adapter *jme)
 933 {
 934         int i;
 935         u32 val;
 936
 937         /*
 938          * Disable RX Engine
 939          */
 940         jwrite32(jme, JME_RXCS, jme->reg_rxcs);
 941         wmb();
 942
 943         val = jread32(jme, JME_RXCS);
 944         for (i = JME_RX_DISABLE_TIMEOUT ; (val & RXCS_ENABLE) && i > 0 ; --i) {
 945                 mdelay(1);
 946                 val = jread32(jme, JME_RXCS);
 947                 rmb();
 948         }
 949
 950         if (!i)
 951                 pr_err("Disable RX engine timeout\n");
 952
 953         /*
 954          * Stop clock for RX MAC Processor
 955          */
 956         jme_mac_rxclk_off(jme);
 957 }
 958
 959 static u16
 960 jme_udpsum(struct sk_buff *skb)
 961 {
 962         u16 csum = 0xFFFFu;
 963
 964         if (skb->len < (ETH_HLEN + sizeof(struct iphdr)))
 965                 return csum;
 966         if (skb->protocol != htons(ETH_P_IP))
 967                 return csum;
 968         skb_set_network_header(skb, ETH_HLEN);
 969         if ((ip_hdr(skb)->protocol != IPPROTO_UDP) ||
 970             (skb->len < (ETH_HLEN +
 971                         (ip_hdr(skb)->ihl << 2) +
 972                         sizeof(struct udphdr)))) {
 973                 skb_reset_network_header(skb);
 974                 return csum;
 975         }
 976         skb_set_transport_header(skb,
 977                         ETH_HLEN + (ip_hdr(skb)->ihl << 2));
 978         csum = udp_hdr(skb)->check;
 979         skb_reset_transport_header(skb);
 980         skb_reset_network_header(skb);
 981
 982         return csum;
 983 }
 984
 985 static int
 986 jme_rxsum_ok(struct jme_adapter *jme, u16 flags, struct sk_buff *skb)
 987 {
 988         if (!(flags & (RXWBFLAG_TCPON | RXWBFLAG_UDPON | RXWBFLAG_IPV4)))
 989                 return false;
 990
 991         if (unlikely((flags & (RXWBFLAG_MF | RXWBFLAG_TCPON | RXWBFLAG_TCPCS))
 992                         == RXWBFLAG_TCPON)) {
 993                 if (flags & RXWBFLAG_IPV4)
 994                         netif_err(jme, rx_err, jme->dev, "TCP Checksum error\n");
 995                 return false;
 996         }
 997
 998         if (unlikely((flags & (RXWBFLAG_MF | RXWBFLAG_UDPON | RXWBFLAG_UDPCS))
 999                         == RXWBFLAG_UDPON) && jme_udpsum(skb)) {
1000                 if (flags & RXWBFLAG_IPV4)
1001                         netif_err(jme, rx_err, jme->dev, "UDP Checksum error\n");
1002                 return false;
1003         }
1004
1005         if (unlikely((flags & (RXWBFLAG_IPV4 | RXWBFLAG_IPCS))
1006                         == RXWBFLAG_IPV4)) {
1007                 netif_err(jme, rx_err, jme->dev, "IPv4 Checksum error\n");
1008                 return false;
1009         }
1010
1011         return true;
1012 }
1013
1014 static void
1015 jme_alloc_and_feed_skb(struct jme_adapter *jme, int idx)
1016 {
1017         struct jme_ring *rxring = &(jme->rxring[0]);
1018         struct rxdesc *rxdesc = rxring->desc;
1019         struct jme_buffer_info *rxbi = rxring->bufinf;
1020         struct sk_buff *skb;
1021         int framesize;
1022
1023         rxdesc += idx;
1024         rxbi += idx;
1025
1026         skb = rxbi->skb;
1027         pci_dma_sync_single_for_cpu(jme->pdev,
1028                                         rxbi->mapping,
1029                                         rxbi->len,
1030                                         PCI_DMA_FROMDEVICE);
1031
1032         if (unlikely(jme_make_new_rx_buf(jme, idx))) {
1033                 pci_dma_sync_single_for_device(jme->pdev,
1034                                                 rxbi->mapping,
1035                                                 rxbi->len,
1036                                                 PCI_DMA_FROMDEVICE);
1037
1038                 ++(NET_STAT(jme).rx_dropped);
1039         } else {
1040                 framesize = le16_to_cpu(rxdesc->descwb.framesize)
1041                                 - RX_PREPAD_SIZE;
1042
1043                 skb_reserve(skb, RX_PREPAD_SIZE);
1044                 skb_put(skb, framesize);
1045                 skb->protocol = eth_type_trans(skb, jme->dev);
1046
1047                 if (jme_rxsum_ok(jme, le16_to_cpu(rxdesc->descwb.flags), skb))
1048                         skb->ip_summed = CHECKSUM_UNNECESSARY;
1049                 else
1050                         skb_checksum_none_assert(skb);
1051
1052                 if (rxdesc->descwb.flags & cpu_to_le16(RXWBFLAG_TAGON)) {
1053                         u16 vid = le16_to_cpu(rxdesc->descwb.vlan);
1054
1055                         __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid);
1056                         NET_STAT(jme).rx_bytes += 4;
1057                 }
1058                 jme->jme_rx(skb);
1059
1060                 if ((rxdesc->descwb.flags & cpu_to_le16(RXWBFLAG_DEST)) ==
1061                     cpu_to_le16(RXWBFLAG_DEST_MUL))
1062                         ++(NET_STAT(jme).multicast);
1063
1064                 NET_STAT(jme).rx_bytes += framesize;
1065                 ++(NET_STAT(jme).rx_packets);
1066         }
1067
1068         jme_set_clean_rxdesc(jme, idx);
1069
1070 }
1071
1072 static int
1073 jme_process_receive(struct jme_adapter *jme, int limit)
1074 {
1075         struct jme_ring *rxring = &(jme->rxring[0]);
1076         struct rxdesc *rxdesc;
1077         int i, j, ccnt, desccnt, mask = jme->rx_ring_mask;
1078
1079         if (unlikely(!atomic_dec_and_test(&jme->rx_cleaning)))
1080                 goto out_inc;
1081
1082         if (unlikely(atomic_read(&jme->link_changing) != 1))
1083                 goto out_inc;
1084
1085         if (unlikely(!netif_carrier_ok(jme->dev)))
1086                 goto out_inc;
1087
1088         i = atomic_read(&rxring->next_to_clean);
1089         while (limit > 0) {
1090                 rxdesc = rxring->desc;
1091                 rxdesc += i;
1092
1093                 if ((rxdesc->descwb.flags & cpu_to_le16(RXWBFLAG_OWN)) ||
1094                 !(rxdesc->descwb.desccnt & RXWBDCNT_WBCPL))
1095                         goto out;
1096                 --limit;
1097
1098                 rmb();
1099                 desccnt = rxdesc->descwb.desccnt & RXWBDCNT_DCNT;
1100
1101                 if (unlikely(desccnt > 1 ||
1102                 rxdesc->descwb.errstat & RXWBERR_ALLERR)) {
1103
1104                         if (rxdesc->descwb.errstat & RXWBERR_CRCERR)
1105                                 ++(NET_STAT(jme).rx_crc_errors);
1106                         else if (rxdesc->descwb.errstat & RXWBERR_OVERUN)
1107                                 ++(NET_STAT(jme).rx_fifo_errors);
1108                         else
1109                                 ++(NET_STAT(jme).rx_errors);
1110
1111                         if (desccnt > 1)
1112                                 limit -= desccnt - 1;
1113
1114                         for (j = i, ccnt = desccnt ; ccnt-- ; ) {
1115                                 jme_set_clean_rxdesc(jme, j);
1116                                 j = (j + 1) & (mask);
1117                         }
1118
1119                 } else {
1120                         jme_alloc_and_feed_skb(jme, i);
1121                 }
1122
1123                 i = (i + desccnt) & (mask);
1124         }
1125
1126 out:
1127         atomic_set(&rxring->next_to_clean, i);
1128
1129 out_inc:
1130         atomic_inc(&jme->rx_cleaning);
1131
1132         return limit > 0 ? limit : 0;
1133
1134 }
1135
1136 static void
1137 jme_attempt_pcc(struct dynpcc_info *dpi, int atmp)
1138 {
1139         if (likely(atmp == dpi->cur)) {
1140                 dpi->cnt = 0;
1141                 return;
1142         }
1143
1144         if (dpi->attempt == atmp) {
1145                 ++(dpi->cnt);
1146         } else {
1147                 dpi->attempt = atmp;
1148                 dpi->cnt = 0;
1149         }
1150
1151 }
1152
1153 static void
1154 jme_dynamic_pcc(struct jme_adapter *jme)
1155 {
1156         register struct dynpcc_info *dpi = &(jme->dpi);
1157
1158         if ((NET_STAT(jme).rx_bytes - dpi->last_bytes) > PCC_P3_THRESHOLD)
1159                 jme_attempt_pcc(dpi, PCC_P3);
1160         else if ((NET_STAT(jme).rx_packets - dpi->last_pkts) > PCC_P2_THRESHOLD ||
1161                  dpi->intr_cnt > PCC_INTR_THRESHOLD)
1162                 jme_attempt_pcc(dpi, PCC_P2);
1163         else
1164                 jme_attempt_pcc(dpi, PCC_P1);
1165
1166         if (unlikely(dpi->attempt != dpi->cur && dpi->cnt > 5)) {
1167                 if (dpi->attempt < dpi->cur)
1168                         tasklet_schedule(&jme->rxclean_task);
1169                 jme_set_rx_pcc(jme, dpi->attempt);
1170                 dpi->cur = dpi->attempt;
1171                 dpi->cnt = 0;
1172         }
1173 }
1174
1175 static void
1176 jme_start_pcc_timer(struct jme_adapter *jme)
1177 {
1178         struct dynpcc_info *dpi = &(jme->dpi);
1179         dpi->last_bytes         = NET_STAT(jme).rx_bytes;
1180         dpi->last_pkts          = NET_STAT(jme).rx_packets;
1181         dpi->intr_cnt           = 0;
1182         jwrite32(jme, JME_TMCSR,
1183                 TMCSR_EN | ((0xFFFFFF - PCC_INTERVAL_US) & TMCSR_CNT));
1184 }
1185
1186 static inline void
1187 jme_stop_pcc_timer(struct jme_adapter *jme)
1188 {
1189         jwrite32(jme, JME_TMCSR, 0);
1190 }
1191
1192 static void
1193 jme_shutdown_nic(struct jme_adapter *jme)
1194 {
1195         u32 phylink;
1196
1197         phylink = jme_linkstat_from_phy(jme);
1198
1199         if (!(phylink & PHY_LINK_UP)) {
1200                 /*
1201                  * Disable all interrupt before issue timer
1202                  */
1203                 jme_stop_irq(jme);
1204                 jwrite32(jme, JME_TIMER2, TMCSR_EN | 0xFFFFFE);
1205         }
1206 }
1207
1208 static void
1209 jme_pcc_tasklet(unsigned long arg)
1210 {
1211         struct jme_adapter *jme = (struct jme_adapter *)arg;
1212         struct net_device *netdev = jme->dev;
1213
1214         if (unlikely(test_bit(JME_FLAG_SHUTDOWN, &jme->flags))) {
1215                 jme_shutdown_nic(jme);
1216                 return;
1217         }
1218
1219         if (unlikely(!netif_carrier_ok(netdev) ||
1220                 (atomic_read(&jme->link_changing) != 1)
1221         )) {
1222                 jme_stop_pcc_timer(jme);
1223                 return;
1224         }
1225
1226         if (!(test_bit(JME_FLAG_POLL, &jme->flags)))
1227                 jme_dynamic_pcc(jme);
1228
1229         jme_start_pcc_timer(jme);
1230 }
1231
1232 static inline void
1233 jme_polling_mode(struct jme_adapter *jme)
1234 {
1235         jme_set_rx_pcc(jme, PCC_OFF);
1236 }
1237
1238 static inline void
1239 jme_interrupt_mode(struct jme_adapter *jme)
1240 {
1241         jme_set_rx_pcc(jme, PCC_P1);
1242 }
1243
1244 static inline int
1245 jme_pseudo_hotplug_enabled(struct jme_adapter *jme)
1246 {
1247         u32 apmc;
1248         apmc = jread32(jme, JME_APMC);
1249         return apmc & JME_APMC_PSEUDO_HP_EN;
1250 }
1251
1252 static void
1253 jme_start_shutdown_timer(struct jme_adapter *jme)
1254 {
1255         u32 apmc;
1256
1257         apmc = jread32(jme, JME_APMC) | JME_APMC_PCIE_SD_EN;
1258         apmc &= ~JME_APMC_EPIEN_CTRL;
1259         if (!no_extplug) {
1260                 jwrite32f(jme, JME_APMC, apmc | JME_APMC_EPIEN_CTRL_EN);
1261                 wmb();
1262         }
1263         jwrite32f(jme, JME_APMC, apmc);
1264
1265         jwrite32f(jme, JME_TIMER2, 0);
1266         set_bit(JME_FLAG_SHUTDOWN, &jme->flags);
1267         jwrite32(jme, JME_TMCSR,
1268                 TMCSR_EN | ((0xFFFFFF - APMC_PHP_SHUTDOWN_DELAY) & TMCSR_CNT));
1269 }
1270
1271 static void
1272 jme_stop_shutdown_timer(struct jme_adapter *jme)
1273 {
1274         u32 apmc;
1275
1276         jwrite32f(jme, JME_TMCSR, 0);
1277         jwrite32f(jme, JME_TIMER2, 0);
1278         clear_bit(JME_FLAG_SHUTDOWN, &jme->flags);
1279
1280         apmc = jread32(jme, JME_APMC);
1281         apmc &= ~(JME_APMC_PCIE_SD_EN | JME_APMC_EPIEN_CTRL);
1282         jwrite32f(jme, JME_APMC, apmc | JME_APMC_EPIEN_CTRL_DIS);
1283         wmb();
1284         jwrite32f(jme, JME_APMC, apmc);
1285 }
1286
1287 static void
1288 jme_link_change_tasklet(unsigned long arg)
1289 {
1290         struct jme_adapter *jme = (struct jme_adapter *)arg;
1291         struct net_device *netdev = jme->dev;
1292         int rc;
1293
1294         while (!atomic_dec_and_test(&jme->link_changing)) {
1295                 atomic_inc(&jme->link_changing);
1296                 netif_info(jme, intr, jme->dev, "Get link change lock failed\n");
1297                 while (atomic_read(&jme->link_changing) != 1)
1298                         netif_info(jme, intr, jme->dev, "Waiting link change lock\n");
1299         }
1300
1301         if (jme_check_link(netdev, 1) && jme->old_mtu == netdev->mtu)
1302                 goto out;
1303
1304         jme->old_mtu = netdev->mtu;
1305         netif_stop_queue(netdev);
1306         if (jme_pseudo_hotplug_enabled(jme))
1307                 jme_stop_shutdown_timer(jme);
1308
1309         jme_stop_pcc_timer(jme);
1310         tasklet_disable(&jme->txclean_task);
1311         tasklet_disable(&jme->rxclean_task);
1312         tasklet_disable(&jme->rxempty_task);
1313
1314         if (netif_carrier_ok(netdev)) {
1315                 jme_disable_rx_engine(jme);
1316                 jme_disable_tx_engine(jme);
1317                 jme_reset_mac_processor(jme);
1318                 jme_free_rx_resources(jme);
1319                 jme_free_tx_resources(jme);
1320
1321                 if (test_bit(JME_FLAG_POLL, &jme->flags))
1322                         jme_polling_mode(jme);
1323
1324                 netif_carrier_off(netdev);
1325         }
1326
1327         jme_check_link(netdev, 0);
1328         if (netif_carrier_ok(netdev)) {
1329                 rc = jme_setup_rx_resources(jme);
1330                 if (rc) {
1331                         pr_err("Allocating resources for RX error, Device STOPPED!\n");
1332                         goto out_enable_tasklet;
1333                 }
1334
1335                 rc = jme_setup_tx_resources(jme);
1336                 if (rc) {
1337                         pr_err("Allocating resources for TX error, Device STOPPED!\n");
1338                         goto err_out_free_rx_resources;
1339                 }
1340
1341                 jme_enable_rx_engine(jme);
1342                 jme_enable_tx_engine(jme);
1343
1344                 netif_start_queue(netdev);
1345
1346                 if (test_bit(JME_FLAG_POLL, &jme->flags))
1347                         jme_interrupt_mode(jme);
1348
1349                 jme_start_pcc_timer(jme);
1350         } else if (jme_pseudo_hotplug_enabled(jme)) {
1351                 jme_start_shutdown_timer(jme);
1352         }
1353
1354         goto out_enable_tasklet;
1355
1356 err_out_free_rx_resources:
1357         jme_free_rx_resources(jme);
1358 out_enable_tasklet:
1359         tasklet_enable(&jme->txclean_task);
1360         tasklet_enable(&jme->rxclean_task);
1361         tasklet_enable(&jme->rxempty_task);
1362 out:
1363         atomic_inc(&jme->link_changing);
1364 }
1365
1366 static void
1367 jme_rx_clean_tasklet(unsigned long arg)
1368 {
1369         struct jme_adapter *jme = (struct jme_adapter *)arg;
1370         struct dynpcc_info *dpi = &(jme->dpi);
1371
1372         jme_process_receive(jme, jme->rx_ring_size);
1373         ++(dpi->intr_cnt);
1374
1375 }
1376
1377 static int
1378 jme_poll(JME_NAPI_HOLDER(holder), JME_NAPI_WEIGHT(budget))
1379 {
1380         struct jme_adapter *jme = jme_napi_priv(holder);
1381         int rest;
1382
1383         rest = jme_process_receive(jme, JME_NAPI_WEIGHT_VAL(budget));
1384
1385         while (atomic_read(&jme->rx_empty) > 0) {
1386                 atomic_dec(&jme->rx_empty);
1387                 ++(NET_STAT(jme).rx_dropped);
1388                 jme_restart_rx_engine(jme);
1389         }
1390         atomic_inc(&jme->rx_empty);
1391
1392         if (rest) {
1393                 JME_RX_COMPLETE(netdev, holder);
1394                 jme_interrupt_mode(jme);
1395         }
1396
1397         JME_NAPI_WEIGHT_SET(budget, rest);
1398         return JME_NAPI_WEIGHT_VAL(budget) - rest;
1399 }
1400
1401 static void
1402 jme_rx_empty_tasklet(unsigned long arg)
1403 {
1404         struct jme_adapter *jme = (struct jme_adapter *)arg;
1405
1406         if (unlikely(atomic_read(&jme->link_changing) != 1))
1407                 return;
1408
1409         if (unlikely(!netif_carrier_ok(jme->dev)))
1410                 return;
1411
1412         netif_info(jme, rx_status, jme->dev, "RX Queue Full!\n");
1413
1414         jme_rx_clean_tasklet(arg);
1415
1416         while (atomic_read(&jme->rx_empty) > 0) {
1417                 atomic_dec(&jme->rx_empty);
1418                 ++(NET_STAT(jme).rx_dropped);
1419                 jme_restart_rx_engine(jme);
1420         }
1421         atomic_inc(&jme->rx_empty);
1422 }
1423
1424 static void
1425 jme_wake_queue_if_stopped(struct jme_adapter *jme)
1426 {
1427         struct jme_ring *txring = &(jme->txring[0]);
1428
1429         smp_wmb();
1430         if (unlikely(netif_queue_stopped(jme->dev) &&
1431         atomic_read(&txring->nr_free) >= (jme->tx_wake_threshold))) {
1432                 netif_info(jme, tx_done, jme->dev, "TX Queue Waked\n");
1433                 netif_wake_queue(jme->dev);
1434         }
1435
1436 }
1437
1438 static void
1439 jme_tx_clean_tasklet(unsigned long arg)
1440 {
1441         struct jme_adapter *jme = (struct jme_adapter *)arg;
1442         struct jme_ring *txring = &(jme->txring[0]);
1443         struct txdesc *txdesc = txring->desc;
1444         struct jme_buffer_info *txbi = txring->bufinf, *ctxbi, *ttxbi;
1445         int i, j, cnt = 0, max, err, mask;
1446
1447         tx_dbg(jme, "Into txclean\n");
1448
1449         if (unlikely(!atomic_dec_and_test(&jme->tx_cleaning)))
1450                 goto out;
1451
1452         if (unlikely(atomic_read(&jme->link_changing) != 1))
1453                 goto out;
1454
1455         if (unlikely(!netif_carrier_ok(jme->dev)))
1456                 goto out;
1457
1458         max = jme->tx_ring_size - atomic_read(&txring->nr_free);
1459         mask = jme->tx_ring_mask;
1460
1461         for (i = atomic_read(&txring->next_to_clean) ; cnt < max ; ) {
1462
1463                 ctxbi = txbi + i;
1464
1465                 if (likely(ctxbi->skb &&
1466                 !(txdesc[i].descwb.flags & TXWBFLAG_OWN))) {
1467
1468                         tx_dbg(jme, "txclean: %d+%d@%lu\n",
1469                                i, ctxbi->nr_desc, jiffies);
1470
1471                         err = txdesc[i].descwb.flags & TXWBFLAG_ALLERR;
1472
1473                         for (j = 1 ; j < ctxbi->nr_desc ; ++j) {
1474                                 ttxbi = txbi + ((i + j) & (mask));
1475                                 txdesc[(i + j) & (mask)].dw[0] = 0;
1476
1477                                 pci_unmap_page(jme->pdev,
1478                                                  ttxbi->mapping,
1479                                                  ttxbi->len,
1480                                                  PCI_DMA_TODEVICE);
1481
1482                                 ttxbi->mapping = 0;
1483                                 ttxbi->len = 0;
1484                         }
1485
1486                         dev_kfree_skb(ctxbi->skb);
1487
1488                         cnt += ctxbi->nr_desc;
1489
1490                         if (unlikely(err)) {
1491                                 ++(NET_STAT(jme).tx_carrier_errors);
1492                         } else {
1493                                 ++(NET_STAT(jme).tx_packets);
1494                                 NET_STAT(jme).tx_bytes += ctxbi->len;
1495                         }
1496
1497                         ctxbi->skb = NULL;
1498                         ctxbi->len = 0;
1499                         ctxbi->start_xmit = 0;
1500
1501                 } else {
1502                         break;
1503                 }
1504
1505                 i = (i + ctxbi->nr_desc) & mask;
1506
1507                 ctxbi->nr_desc = 0;
1508         }
1509
1510         tx_dbg(jme, "txclean: done %d@%lu\n", i, jiffies);
1511         atomic_set(&txring->next_to_clean, i);
1512         atomic_add(cnt, &txring->nr_free);
1513
1514         jme_wake_queue_if_stopped(jme);
1515
1516 out:
1517         atomic_inc(&jme->tx_cleaning);
1518 }
1519
1520 static void
1521 jme_intr_msi(struct jme_adapter *jme, u32 intrstat)
1522 {
1523         /*
1524          * Disable interrupt
1525          */
1526         jwrite32f(jme, JME_IENC, INTR_ENABLE);
1527
1528         if (intrstat & (INTR_LINKCH | INTR_SWINTR)) {
1529                 /*
1530                  * Link change event is critical
1531                  * all other events are ignored
1532                  */
1533                 jwrite32(jme, JME_IEVE, intrstat);
1534                 tasklet_schedule(&jme->linkch_task);
1535                 goto out_reenable;
1536         }
1537
1538         if (intrstat & INTR_TMINTR) {
1539                 jwrite32(jme, JME_IEVE, INTR_TMINTR);
1540                 tasklet_schedule(&jme->pcc_task);
1541         }
1542
1543         if (intrstat & (INTR_PCCTXTO | INTR_PCCTX)) {
1544                 jwrite32(jme, JME_IEVE, INTR_PCCTXTO | INTR_PCCTX | INTR_TX0);
1545                 tasklet_schedule(&jme->txclean_task);
1546         }
1547
1548         if ((intrstat & (INTR_PCCRX0TO | INTR_PCCRX0 | INTR_RX0EMP))) {
1549                 jwrite32(jme, JME_IEVE, (intrstat & (INTR_PCCRX0TO |
1550                                                      INTR_PCCRX0 |
1551                                                      INTR_RX0EMP)) |
1552                                         INTR_RX0);
1553         }
1554
1555         if (test_bit(JME_FLAG_POLL, &jme->flags)) {
1556                 if (intrstat & INTR_RX0EMP)
1557                         atomic_inc(&jme->rx_empty);
1558
1559                 if ((intrstat & (INTR_PCCRX0TO | INTR_PCCRX0 | INTR_RX0EMP))) {
1560                         if (likely(JME_RX_SCHEDULE_PREP(jme))) {
1561                                 jme_polling_mode(jme);
1562                                 JME_RX_SCHEDULE(jme);
1563                         }
1564                 }
1565         } else {
1566                 if (intrstat & INTR_RX0EMP) {
1567                         atomic_inc(&jme->rx_empty);
1568                         tasklet_hi_schedule(&jme->rxempty_task);
1569                 } else if (intrstat & (INTR_PCCRX0TO | INTR_PCCRX0)) {
1570                         tasklet_hi_schedule(&jme->rxclean_task);
1571                 }
1572         }
1573
1574 out_reenable:
1575         /*
1576          * Re-enable interrupt
1577          */
1578         jwrite32f(jme, JME_IENS, INTR_ENABLE);
1579 }
1580
1581 static irqreturn_t
1582 jme_intr(int irq, void *dev_id)
1583 {
1584         struct net_device *netdev = dev_id;
1585         struct jme_adapter *jme = netdev_priv(netdev);
1586         u32 intrstat;
1587
1588         intrstat = jread32(jme, JME_IEVE);
1589
1590         /*
1591          * Check if it's really an interrupt for us
1592          */
1593         if (unlikely((intrstat & INTR_ENABLE) == 0))
1594                 return IRQ_NONE;
1595
1596         /*
1597          * Check if the device still exist
1598          */
1599         if (unlikely(intrstat == ~((typeof(intrstat))0)))
1600                 return IRQ_NONE;
1601
1602         jme_intr_msi(jme, intrstat);
1603
1604         return IRQ_HANDLED;
1605 }
1606
1607 static irqreturn_t
1608 jme_msi(int irq, void *dev_id)
1609 {
1610         struct net_device *netdev = dev_id;
1611         struct jme_adapter *jme = netdev_priv(netdev);
1612         u32 intrstat;
1613
1614         intrstat = jread32(jme, JME_IEVE);
1615
1616         jme_intr_msi(jme, intrstat);
1617
1618         return IRQ_HANDLED;
1619 }
1620
1621 static void
1622 jme_reset_link(struct jme_adapter *jme)
1623 {
1624         jwrite32(jme, JME_TMCSR, TMCSR_SWIT);
1625 }
1626
1627 static void
1628 jme_restart_an(struct jme_adapter *jme)
1629 {
1630         u32 bmcr;
1631
1632         spin_lock_bh(&jme->phy_lock);
1633         bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
1634         bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
1635         jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, bmcr);
1636         spin_unlock_bh(&jme->phy_lock);
1637 }
1638
1639 static int
1640 jme_request_irq(struct jme_adapter *jme)
1641 {
1642         int rc;
1643         struct net_device *netdev = jme->dev;
1644         irq_handler_t handler = jme_intr;
1645         int irq_flags = IRQF_SHARED;
1646
1647         if (!pci_enable_msi(jme->pdev)) {
1648                 set_bit(JME_FLAG_MSI, &jme->flags);
1649                 handler = jme_msi;
1650                 irq_flags = 0;
1651         }
1652
1653         rc = request_irq(jme->pdev->irq, handler, irq_flags, netdev->name,
1654                           netdev);
1655         if (rc) {
1656                 netdev_err(netdev,
1657                            "Unable to request %s interrupt (return: %d)\n",
1658                            test_bit(JME_FLAG_MSI, &jme->flags) ? "MSI" : "INTx",
1659                            rc);
1660
1661                 if (test_bit(JME_FLAG_MSI, &jme->flags)) {
1662                         pci_disable_msi(jme->pdev);
1663                         clear_bit(JME_FLAG_MSI, &jme->flags);
1664                 }
1665         } else {
1666                 netdev->irq = jme->pdev->irq;
1667         }
1668
1669         return rc;
1670 }
1671
1672 static void
1673 jme_free_irq(struct jme_adapter *jme)
1674 {
1675         free_irq(jme->pdev->irq, jme->dev);
1676         if (test_bit(JME_FLAG_MSI, &jme->flags)) {
1677                 pci_disable_msi(jme->pdev);
1678                 clear_bit(JME_FLAG_MSI, &jme->flags);
1679                 jme->dev->irq = jme->pdev->irq;
1680         }
1681 }
1682
1683 static inline void
1684 jme_new_phy_on(struct jme_adapter *jme)
1685 {
1686         u32 reg;
1687
1688         reg = jread32(jme, JME_PHY_PWR);
1689         reg &= ~(PHY_PWR_DWN1SEL | PHY_PWR_DWN1SW |
1690                  PHY_PWR_DWN2 | PHY_PWR_CLKSEL);
1691         jwrite32(jme, JME_PHY_PWR, reg);
1692
1693         pci_read_config_dword(jme->pdev, PCI_PRIV_PE1, &reg);
1694         reg &= ~PE1_GPREG0_PBG;
1695         reg |= PE1_GPREG0_ENBG;
1696         pci_write_config_dword(jme->pdev, PCI_PRIV_PE1, reg);
1697 }
1698
1699 static inline void
1700 jme_new_phy_off(struct jme_adapter *jme)
1701 {
1702         u32 reg;
1703
1704         reg = jread32(jme, JME_PHY_PWR);
1705         reg |= PHY_PWR_DWN1SEL | PHY_PWR_DWN1SW |
1706                PHY_PWR_DWN2 | PHY_PWR_CLKSEL;
1707         jwrite32(jme, JME_PHY_PWR, reg);
1708
1709         pci_read_config_dword(jme->pdev, PCI_PRIV_PE1, &reg);
1710         reg &= ~PE1_GPREG0_PBG;
1711         reg |= PE1_GPREG0_PDD3COLD;
1712         pci_write_config_dword(jme->pdev, PCI_PRIV_PE1, reg);
1713 }
1714
1715 static inline void
1716 jme_phy_on(struct jme_adapter *jme)
1717 {
1718         u32 bmcr;
1719
1720         bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
1721         bmcr &= ~BMCR_PDOWN;
1722         jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, bmcr);
1723
1724         if (new_phy_power_ctrl(jme->chip_main_rev))
1725                 jme_new_phy_on(jme);
1726 }
1727
1728 static inline void
1729 jme_phy_off(struct jme_adapter *jme)
1730 {
1731         u32 bmcr;
1732
1733         bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
1734         bmcr |= BMCR_PDOWN;
1735         jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, bmcr);
1736
1737         if (new_phy_power_ctrl(jme->chip_main_rev))
1738                 jme_new_phy_off(jme);
1739 }
1740
1741 static int
1742 jme_phy_specreg_read(struct jme_adapter *jme, u32 specreg)
1743 {
1744         u32 phy_addr;
1745
1746         phy_addr = JM_PHY_SPEC_REG_READ | specreg;
1747         jme_mdio_write(jme->dev, jme->mii_if.phy_id, JM_PHY_SPEC_ADDR_REG,
1748                         phy_addr);
1749         return jme_mdio_read(jme->dev, jme->mii_if.phy_id,
1750                         JM_PHY_SPEC_DATA_REG);
1751 }
1752
1753 static void
1754 jme_phy_specreg_write(struct jme_adapter *jme, u32 ext_reg, u32 phy_data)
1755 {
1756         u32 phy_addr;
1757
1758         phy_addr = JM_PHY_SPEC_REG_WRITE | ext_reg;
1759         jme_mdio_write(jme->dev, jme->mii_if.phy_id, JM_PHY_SPEC_DATA_REG,
1760                         phy_data);
1761         jme_mdio_write(jme->dev, jme->mii_if.phy_id, JM_PHY_SPEC_ADDR_REG,
1762                         phy_addr);
1763 }
1764
1765 static int
1766 jme_phy_calibration(struct jme_adapter *jme)
1767 {
1768         u32 ctrl1000, phy_data;
1769
1770         jme_phy_off(jme);
1771         jme_phy_on(jme);
1772         /*  Enabel PHY test mode 1 */
1773         ctrl1000 = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_CTRL1000);
1774         ctrl1000 &= ~PHY_GAD_TEST_MODE_MSK;
1775         ctrl1000 |= PHY_GAD_TEST_MODE_1;
1776         jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_CTRL1000, ctrl1000);
1777
1778         phy_data = jme_phy_specreg_read(jme, JM_PHY_EXT_COMM_2_REG);
1779         phy_data &= ~JM_PHY_EXT_COMM_2_CALI_MODE_0;
1780         phy_data |= JM_PHY_EXT_COMM_2_CALI_LATCH |
1781                         JM_PHY_EXT_COMM_2_CALI_ENABLE;
1782         jme_phy_specreg_write(jme, JM_PHY_EXT_COMM_2_REG, phy_data);
1783         msleep(20);
1784         phy_data = jme_phy_specreg_read(jme, JM_PHY_EXT_COMM_2_REG);
1785         phy_data &= ~(JM_PHY_EXT_COMM_2_CALI_ENABLE |
1786                         JM_PHY_EXT_COMM_2_CALI_MODE_0 |
1787                         JM_PHY_EXT_COMM_2_CALI_LATCH);
1788         jme_phy_specreg_write(jme, JM_PHY_EXT_COMM_2_REG, phy_data);
1789
1790         /*  Disable PHY test mode */
1791         ctrl1000 = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_CTRL1000);
1792         ctrl1000 &= ~PHY_GAD_TEST_MODE_MSK;
1793         jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_CTRL1000, ctrl1000);
1794         return 0;
1795 }
1796
1797 static int
1798 jme_phy_setEA(struct jme_adapter *jme)
1799 {
1800         u32 phy_comm0 = 0, phy_comm1 = 0;
1801         u8 nic_ctrl;
1802
1803         pci_read_config_byte(jme->pdev, PCI_PRIV_SHARE_NICCTRL, &nic_ctrl);
1804         if ((nic_ctrl & 0x3) == JME_FLAG_PHYEA_ENABLE)
1805                 return 0;
1806
1807         switch (jme->pdev->device) {
1808         case PCI_DEVICE_ID_JMICRON_JMC250:
1809                 if (((jme->chip_main_rev == 5) &&
1810                         ((jme->chip_sub_rev == 0) || (jme->chip_sub_rev == 1) ||
1811                         (jme->chip_sub_rev == 3))) ||
1812                         (jme->chip_main_rev >= 6)) {
1813                         phy_comm0 = 0x008A;
1814                         phy_comm1 = 0x4109;
1815                 }
1816                 if ((jme->chip_main_rev == 3) &&
1817                         ((jme->chip_sub_rev == 1) || (jme->chip_sub_rev == 2)))
1818                         phy_comm0 = 0xE088;
1819                 break;
1820         case PCI_DEVICE_ID_JMICRON_JMC260:
1821                 if (((jme->chip_main_rev == 5) &&
1822                         ((jme->chip_sub_rev == 0) || (jme->chip_sub_rev == 1) ||
1823                         (jme->chip_sub_rev == 3))) ||
1824                         (jme->chip_main_rev >= 6)) {
1825                         phy_comm0 = 0x008A;
1826                         phy_comm1 = 0x4109;
1827                 }
1828                 if ((jme->chip_main_rev == 3) &&
1829                         ((jme->chip_sub_rev == 1) || (jme->chip_sub_rev == 2)))
1830                         phy_comm0 = 0xE088;
1831                 if ((jme->chip_main_rev == 2) && (jme->chip_sub_rev == 0))
1832                         phy_comm0 = 0x608A;
1833                 if ((jme->chip_main_rev == 2) && (jme->chip_sub_rev == 2))
1834                         phy_comm0 = 0x408A;
1835                 break;
1836         default:
1837                 return -ENODEV;
1838         }
1839         if (phy_comm0)
1840                 jme_phy_specreg_write(jme, JM_PHY_EXT_COMM_0_REG, phy_comm0);
1841         if (phy_comm1)
1842                 jme_phy_specreg_write(jme, JM_PHY_EXT_COMM_1_REG, phy_comm1);
1843
1844         return 0;
1845 }
1846
1847 static int
1848 jme_open(struct net_device *netdev)
1849 {
1850         struct jme_adapter *jme = netdev_priv(netdev);
1851         int rc;
1852
1853         jme_clear_pm_disable_wol(jme);
1854         JME_NAPI_ENABLE(jme);
1855
1856         tasklet_init(&jme->linkch_task, jme_link_change_tasklet,
1857                      (unsigned long) jme);
1858         tasklet_init(&jme->txclean_task, jme_tx_clean_tasklet,
1859                      (unsigned long) jme);
1860         tasklet_init(&jme->rxclean_task, jme_rx_clean_tasklet,
1861                      (unsigned long) jme);
1862         tasklet_init(&jme->rxempty_task, jme_rx_empty_tasklet,
1863                      (unsigned long) jme);
1864
1865         rc = jme_request_irq(jme);
1866         if (rc)
1867                 goto err_out;
1868
1869         jme_start_irq(jme);
1870
1871         jme_phy_on(jme);
1872         if (test_bit(JME_FLAG_SSET, &jme->flags))
1873                 jme_set_link_ksettings(netdev, &jme->old_cmd);
1874         else
1875                 jme_reset_phy_processor(jme);
1876         jme_phy_calibration(jme);
1877         jme_phy_setEA(jme);
1878         jme_reset_link(jme);
1879
1880         return 0;
1881
1882 err_out:
1883         netif_stop_queue(netdev);
1884         netif_carrier_off(netdev);
1885         return rc;
1886 }
1887
1888 static void
1889 jme_set_100m_half(struct jme_adapter *jme)
1890 {
1891         u32 bmcr, tmp;
1892
1893         jme_phy_on(jme);
1894         bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
1895         tmp = bmcr & ~(BMCR_ANENABLE | BMCR_SPEED100 |
1896                        BMCR_SPEED1000 | BMCR_FULLDPLX);
1897         tmp |= BMCR_SPEED100;
1898
1899         if (bmcr != tmp)
1900                 jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, tmp);
1901
1902         if (jme->fpgaver)
1903                 jwrite32(jme, JME_GHC, GHC_SPEED_100M | GHC_LINK_POLL);
1904         else
1905                 jwrite32(jme, JME_GHC, GHC_SPEED_100M);
1906 }
1907
1908 #define JME_WAIT_LINK_TIME 2000 /* 2000ms */
1909 static void
1910 jme_wait_link(struct jme_adapter *jme)
1911 {
1912         u32 phylink, to = JME_WAIT_LINK_TIME;
1913
1914         msleep(1000);
1915         phylink = jme_linkstat_from_phy(jme);
1916         while (!(phylink & PHY_LINK_UP) && (to -= 10) > 0) {
1917                 usleep_range(10000, 11000);
1918                 phylink = jme_linkstat_from_phy(jme);
1919         }
1920 }
1921
1922 static void
1923 jme_powersave_phy(struct jme_adapter *jme)
1924 {
1925         if (jme->reg_pmcs && device_may_wakeup(&jme->pdev->dev)) {
1926                 jme_set_100m_half(jme);
1927                 if (jme->reg_pmcs & (PMCS_LFEN | PMCS_LREN))
1928                         jme_wait_link(jme);
1929                 jme_clear_pm_enable_wol(jme);
1930         } else {
1931                 jme_phy_off(jme);
1932         }
1933 }
1934
1935 static int
1936 jme_close(struct net_device *netdev)
1937 {
1938         struct jme_adapter *jme = netdev_priv(netdev);
1939
1940         netif_stop_queue(netdev);
1941         netif_carrier_off(netdev);
1942
1943         jme_stop_irq(jme);
1944         jme_free_irq(jme);
1945
1946         JME_NAPI_DISABLE(jme);
1947
1948         tasklet_kill(&jme->linkch_task);
1949         tasklet_kill(&jme->txclean_task);
1950         tasklet_kill(&jme->rxclean_task);
1951         tasklet_kill(&jme->rxempty_task);
1952
1953         jme_disable_rx_engine(jme);
1954         jme_disable_tx_engine(jme);
1955         jme_reset_mac_processor(jme);
1956         jme_free_rx_resources(jme);
1957         jme_free_tx_resources(jme);
1958         jme->phylink = 0;
1959         jme_phy_off(jme);
1960
1961         return 0;
1962 }
1963
1964 static int
1965 jme_alloc_txdesc(struct jme_adapter *jme,
1966                         struct sk_buff *skb)
1967 {
1968         struct jme_ring *txring = &(jme->txring[0]);
1969         int idx, nr_alloc, mask = jme->tx_ring_mask;
1970
1971         idx = txring->next_to_use;
1972         nr_alloc = skb_shinfo(skb)->nr_frags + 2;
1973
1974         if (unlikely(atomic_read(&txring->nr_free) < nr_alloc))
1975                 return -1;
1976
1977         atomic_sub(nr_alloc, &txring->nr_free);
1978
1979         txring->next_to_use = (txring->next_to_use + nr_alloc) & mask;
1980
1981         return idx;
1982 }
1983
1984 static int
1985 jme_fill_tx_map(struct pci_dev *pdev,
1986                 struct txdesc *txdesc,
1987                 struct jme_buffer_info *txbi,
1988                 struct page *page,
1989                 u32 page_offset,
1990                 u32 len,
1991                 bool hidma)
1992 {
1993         dma_addr_t dmaaddr;
1994
1995         dmaaddr = pci_map_page(pdev,
1996                                 page,
1997                                 page_offset,
1998                                 len,
1999                                 PCI_DMA_TODEVICE);
2000
2001         if (unlikely(pci_dma_mapping_error(pdev, dmaaddr)))
2002                 return -EINVAL;
2003
2004         pci_dma_sync_single_for_device(pdev,
2005                                        dmaaddr,
2006                                        len,
2007                                        PCI_DMA_TODEVICE);
2008
2009         txdesc->dw[0] = 0;
2010         txdesc->dw[1] = 0;
2011         txdesc->desc2.flags     = TXFLAG_OWN;
2012         txdesc->desc2.flags     |= (hidma) ? TXFLAG_64BIT : 0;
2013         txdesc->desc2.datalen   = cpu_to_le16(len);
2014         txdesc->desc2.bufaddrh  = cpu_to_le32((__u64)dmaaddr >> 32);
2015         txdesc->desc2.bufaddrl  = cpu_to_le32(
2016                                         (__u64)dmaaddr & 0xFFFFFFFFUL);
2017
2018         txbi->mapping = dmaaddr;
2019         txbi->len = len;
2020         return 0;
2021 }
2022
2023 static void jme_drop_tx_map(struct jme_adapter *jme, int startidx, int count)
2024 {
2025         struct jme_ring *txring = &(jme->txring[0]);
2026         struct jme_buffer_info *txbi = txring->bufinf, *ctxbi;
2027         int mask = jme->tx_ring_mask;
2028         int j;
2029
2030         for (j = 0 ; j < count ; j++) {
2031                 ctxbi = txbi + ((startidx + j + 2) & (mask));
2032                 pci_unmap_page(jme->pdev,
2033                                 ctxbi->mapping,
2034                                 ctxbi->len,
2035                                 PCI_DMA_TODEVICE);
2036
2037                 ctxbi->mapping = 0;
2038                 ctxbi->len = 0;
2039         }
2040 }
2041
2042 static int
2043 jme_map_tx_skb(struct jme_adapter *jme, struct sk_buff *skb, int idx)
2044 {
2045         struct jme_ring *txring = &(jme->txring[0]);
2046         struct txdesc *txdesc = txring->desc, *ctxdesc;
2047         struct jme_buffer_info *txbi = txring->bufinf, *ctxbi;
2048         bool hidma = jme->dev->features & NETIF_F_HIGHDMA;
2049         int i, nr_frags = skb_shinfo(skb)->nr_frags;
2050         int mask = jme->tx_ring_mask;
2051         const struct skb_frag_struct *frag;
2052         u32 len;
2053         int ret = 0;
2054
2055         for (i = 0 ; i < nr_frags ; ++i) {
2056                 frag = &skb_shinfo(skb)->frags[i];
2057                 ctxdesc = txdesc + ((idx + i + 2) & (mask));
2058                 ctxbi = txbi + ((idx + i + 2) & (mask));
2059
2060                 ret = jme_fill_tx_map(jme->pdev, ctxdesc, ctxbi,
2061                                 skb_frag_page(frag),
2062                                 frag->page_offset, skb_frag_size(frag), hidma);
2063                 if (ret) {
2064                         jme_drop_tx_map(jme, idx, i);
2065                         goto out;
2066                 }
2067
2068         }
2069
2070         len = skb_is_nonlinear(skb) ? skb_headlen(skb) : skb->len;
2071         ctxdesc = txdesc + ((idx + 1) & (mask));
2072         ctxbi = txbi + ((idx + 1) & (mask));
2073         ret = jme_fill_tx_map(jme->pdev, ctxdesc, ctxbi, virt_to_page(skb->data),
2074                         offset_in_page(skb->data), len, hidma);
2075         if (ret)
2076                 jme_drop_tx_map(jme, idx, i);
2077
2078 out:
2079         return ret;
2080
2081 }
2082
2083
2084 static int
2085 jme_tx_tso(struct sk_buff *skb, __le16 *mss, u8 *flags)
2086 {
2087         *mss = cpu_to_le16(skb_shinfo(skb)->gso_size << TXDESC_MSS_SHIFT);
2088         if (*mss) {
2089                 *flags |= TXFLAG_LSEN;
2090
2091                 if (skb->protocol == htons(ETH_P_IP)) {
2092                         struct iphdr *iph = ip_hdr(skb);
2093
2094                         iph->check = 0;
2095                         tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
2096                                                                 iph->daddr, 0,
2097                                                                 IPPROTO_TCP,
2098                                                                 0);
2099                 } else {
2100                         struct ipv6hdr *ip6h = ipv6_hdr(skb);
2101
2102                         tcp_hdr(skb)->check = ~csum_ipv6_magic(&ip6h->saddr,
2103                                                                 &ip6h->daddr, 0,
2104                                                                 IPPROTO_TCP,
2105                                                                 0);
2106                 }
2107
2108                 return 0;
2109         }
2110
2111         return 1;
2112 }
2113
2114 static void
2115 jme_tx_csum(struct jme_adapter *jme, struct sk_buff *skb, u8 *flags)
2116 {
2117         if (skb->ip_summed == CHECKSUM_PARTIAL) {
2118                 u8 ip_proto;
2119
2120                 switch (skb->protocol) {
2121                 case htons(ETH_P_IP):
2122                         ip_proto = ip_hdr(skb)->protocol;
2123                         break;
2124                 case htons(ETH_P_IPV6):
2125                         ip_proto = ipv6_hdr(skb)->nexthdr;
2126                         break;
2127                 default:
2128                         ip_proto = 0;
2129                         break;
2130                 }
2131
2132                 switch (ip_proto) {
2133                 case IPPROTO_TCP:
2134                         *flags |= TXFLAG_TCPCS;
2135                         break;
2136                 case IPPROTO_UDP:
2137                         *flags |= TXFLAG_UDPCS;
2138                         break;
2139                 default:
2140                         netif_err(jme, tx_err, jme->dev, "Error upper layer protocol\n");
2141                         break;
2142                 }
2143         }
2144 }
2145
2146 static inline void
2147 jme_tx_vlan(struct sk_buff *skb, __le16 *vlan, u8 *flags)
2148 {
2149         if (skb_vlan_tag_present(skb)) {
2150                 *flags |= TXFLAG_TAGON;
2151                 *vlan = cpu_to_le16(skb_vlan_tag_get(skb));
2152         }
2153 }
2154
2155 static int
2156 jme_fill_tx_desc(struct jme_adapter *jme, struct sk_buff *skb, int idx)
2157 {
2158         struct jme_ring *txring = &(jme->txring[0]);
2159         struct txdesc *txdesc;
2160         struct jme_buffer_info *txbi;
2161         u8 flags;
2162         int ret = 0;
2163
2164         txdesc = (struct txdesc *)txring->desc + idx;
2165         txbi = txring->bufinf + idx;
2166
2167         txdesc->dw[0] = 0;
2168         txdesc->dw[1] = 0;
2169         txdesc->dw[2] = 0;
2170         txdesc->dw[3] = 0;
2171         txdesc->desc1.pktsize = cpu_to_le16(skb->len);
2172         /*
2173          * Set OWN bit at final.
2174          * When kernel transmit faster than NIC.
2175          * And NIC trying to send this descriptor before we tell
2176          * it to start sending this TX queue.
2177          * Other fields are already filled correctly.
2178          */
2179         wmb();
2180         flags = TXFLAG_OWN | TXFLAG_INT;
2181         /*
2182          * Set checksum flags while not tso
2183          */
2184         if (jme_tx_tso(skb, &txdesc->desc1.mss, &flags))
2185                 jme_tx_csum(jme, skb, &flags);
2186         jme_tx_vlan(skb, &txdesc->desc1.vlan, &flags);
2187         ret = jme_map_tx_skb(jme, skb, idx);
2188         if (ret)
2189                 return ret;
2190
2191         txdesc->desc1.flags = flags;
2192         /*
2193          * Set tx buffer info after telling NIC to send
2194          * For better tx_clean timing
2195          */
2196         wmb();
2197         txbi->nr_desc = skb_shinfo(skb)->nr_frags + 2;
2198         txbi->skb = skb;
2199         txbi->len = skb->len;
2200         txbi->start_xmit = jiffies;
2201         if (!txbi->start_xmit)
2202                 txbi->start_xmit = (0UL-1);
2203
2204         return 0;
2205 }
2206
2207 static void
2208 jme_stop_queue_if_full(struct jme_adapter *jme)
2209 {
2210         struct jme_ring *txring = &(jme->txring[0]);
2211         struct jme_buffer_info *txbi = txring->bufinf;
2212         int idx = atomic_read(&txring->next_to_clean);
2213
2214         txbi += idx;
2215
2216         smp_wmb();
2217         if (unlikely(atomic_read(&txring->nr_free) < (MAX_SKB_FRAGS+2))) {
2218                 netif_stop_queue(jme->dev);
2219                 netif_info(jme, tx_queued, jme->dev, "TX Queue Paused\n");
2220                 smp_wmb();
2221                 if (atomic_read(&txring->nr_free)
2222                         >= (jme->tx_wake_threshold)) {
2223                         netif_wake_queue(jme->dev);
2224                         netif_info(jme, tx_queued, jme->dev, "TX Queue Fast Waked\n");
2225                 }
2226         }
2227
2228         if (unlikely(txbi->start_xmit &&
2229                         (jiffies - txbi->start_xmit) >= TX_TIMEOUT &&
2230                         txbi->skb)) {
2231                 netif_stop_queue(jme->dev);
2232                 netif_info(jme, tx_queued, jme->dev,
2233                            "TX Queue Stopped %d@%lu\n", idx, jiffies);
2234         }
2235 }
2236
2237 /*
2238  * This function is already protected by netif_tx_lock()
2239  */
2240
2241 static netdev_tx_t
2242 jme_start_xmit(struct sk_buff *skb, struct net_device *netdev)
2243 {
2244         struct jme_adapter *jme = netdev_priv(netdev);
2245         int idx;
2246
2247         if (unlikely(skb_is_gso(skb) && skb_cow_head(skb, 0))) {
2248                 dev_kfree_skb_any(skb);
2249                 ++(NET_STAT(jme).tx_dropped);
2250                 return NETDEV_TX_OK;
2251         }
2252
2253         idx = jme_alloc_txdesc(jme, skb);
2254
2255         if (unlikely(idx < 0)) {
2256                 netif_stop_queue(netdev);
2257                 netif_err(jme, tx_err, jme->dev,
2258                           "BUG! Tx ring full when queue awake!\n");
2259
2260                 return NETDEV_TX_BUSY;
2261         }
2262
2263         if (jme_fill_tx_desc(jme, skb, idx))
2264                 return NETDEV_TX_OK;
2265
2266         jwrite32(jme, JME_TXCS, jme->reg_txcs |
2267                                 TXCS_SELECT_QUEUE0 |
2268                                 TXCS_QUEUE0S |
2269                                 TXCS_ENABLE);
2270
2271         tx_dbg(jme, "xmit: %d+%d@%lu\n",
2272                idx, skb_shinfo(skb)->nr_frags + 2, jiffies);
2273         jme_stop_queue_if_full(jme);
2274
2275         return NETDEV_TX_OK;
2276 }
2277
2278 static void
2279 jme_set_unicastaddr(struct net_device *netdev)
2280 {
2281         struct jme_adapter *jme = netdev_priv(netdev);
2282         u32 val;
2283
2284         val = (netdev->dev_addr[3] & 0xff) << 24 |
2285               (netdev->dev_addr[2] & 0xff) << 16 |
2286               (netdev->dev_addr[1] & 0xff) <<  8 |
2287               (netdev->dev_addr[0] & 0xff);
2288         jwrite32(jme, JME_RXUMA_LO, val);
2289         val = (netdev->dev_addr[5] & 0xff) << 8 |
2290               (netdev->dev_addr[4] & 0xff);
2291         jwrite32(jme, JME_RXUMA_HI, val);
2292 }
2293
2294 static int
2295 jme_set_macaddr(struct net_device *netdev, void *p)
2296 {
2297         struct jme_adapter *jme = netdev_priv(netdev);
2298         struct sockaddr *addr = p;
2299
2300         if (netif_running(netdev))
2301                 return -EBUSY;
2302
2303         spin_lock_bh(&jme->macaddr_lock);
2304         memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
2305         jme_set_unicastaddr(netdev);
2306         spin_unlock_bh(&jme->macaddr_lock);
2307
2308         return 0;
2309 }
2310
2311 static void
2312 jme_set_multi(struct net_device *netdev)
2313 {
2314         struct jme_adapter *jme = netdev_priv(netdev);
2315         u32 mc_hash[2] = {};
2316
2317         spin_lock_bh(&jme->rxmcs_lock);
2318
2319         jme->reg_rxmcs |= RXMCS_BRDFRAME | RXMCS_UNIFRAME;
2320
2321         if (netdev->flags & IFF_PROMISC) {
2322                 jme->reg_rxmcs |= RXMCS_ALLFRAME;
2323         } else if (netdev->flags & IFF_ALLMULTI) {
2324                 jme->reg_rxmcs |= RXMCS_ALLMULFRAME;
2325         } else if (netdev->flags & IFF_MULTICAST) {
2326                 struct netdev_hw_addr *ha;
2327                 int bit_nr;
2328
2329                 jme->reg_rxmcs |= RXMCS_MULFRAME | RXMCS_MULFILTERED;
2330                 netdev_for_each_mc_addr(ha, netdev) {
2331                         bit_nr = ether_crc(ETH_ALEN, ha->addr) & 0x3F;
2332                         mc_hash[bit_nr >> 5] |= 1 << (bit_nr & 0x1F);
2333                 }
2334
2335                 jwrite32(jme, JME_RXMCHT_LO, mc_hash[0]);
2336                 jwrite32(jme, JME_RXMCHT_HI, mc_hash[1]);
2337         }
2338
2339         wmb();
2340         jwrite32(jme, JME_RXMCS, jme->reg_rxmcs);
2341
2342         spin_unlock_bh(&jme->rxmcs_lock);
2343 }
2344
2345 static int
2346 jme_change_mtu(struct net_device *netdev, int new_mtu)
2347 {
2348         struct jme_adapter *jme = netdev_priv(netdev);
2349
2350         netdev->mtu = new_mtu;
2351         netdev_update_features(netdev);
2352
2353         jme_restart_rx_engine(jme);
2354         jme_reset_link(jme);
2355
2356         return 0;
2357 }
2358
2359 static void
2360 jme_tx_timeout(struct net_device *netdev)
2361 {
2362         struct jme_adapter *jme = netdev_priv(netdev);
2363
2364         jme->phylink = 0;
2365         jme_reset_phy_processor(jme);
2366         if (test_bit(JME_FLAG_SSET, &jme->flags))
2367                 jme_set_link_ksettings(netdev, &jme->old_cmd);
2368
2369         /*
2370          * Force to Reset the link again
2371          */
2372         jme_reset_link(jme);
2373 }
2374
2375 static void
2376 jme_get_drvinfo(struct net_device *netdev,
2377                      struct ethtool_drvinfo *info)
2378 {
2379         struct jme_adapter *jme = netdev_priv(netdev);
2380
2381         strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
2382         strlcpy(info->version, DRV_VERSION, sizeof(info->version));
2383         strlcpy(info->bus_info, pci_name(jme->pdev), sizeof(info->bus_info));
2384 }
2385
2386 static int
2387 jme_get_regs_len(struct net_device *netdev)
2388 {
2389         return JME_REG_LEN;
2390 }
2391
2392 static void
2393 mmapio_memcpy(struct jme_adapter *jme, u32 *p, u32 reg, int len)
2394 {
2395         int i;
2396
2397         for (i = 0 ; i < len ; i += 4)
2398                 p[i >> 2] = jread32(jme, reg + i);
2399 }
2400
2401 static void
2402 mdio_memcpy(struct jme_adapter *jme, u32 *p, int reg_nr)
2403 {
2404         int i;
2405         u16 *p16 = (u16 *)p;
2406
2407         for (i = 0 ; i < reg_nr ; ++i)
2408                 p16[i] = jme_mdio_read(jme->dev, jme->mii_if.phy_id, i);
2409 }
2410
2411 static void
2412 jme_get_regs(struct net_device *netdev, struct ethtool_regs *regs, void *p)
2413 {
2414         struct jme_adapter *jme = netdev_priv(netdev);
2415         u32 *p32 = (u32 *)p;
2416
2417         memset(p, 0xFF, JME_REG_LEN);
2418
2419         regs->version = 1;
2420         mmapio_memcpy(jme, p32, JME_MAC, JME_MAC_LEN);
2421
2422         p32 += 0x100 >> 2;
2423         mmapio_memcpy(jme, p32, JME_PHY, JME_PHY_LEN);
2424
2425         p32 += 0x100 >> 2;
2426         mmapio_memcpy(jme, p32, JME_MISC, JME_MISC_LEN);
2427
2428         p32 += 0x100 >> 2;
2429         mmapio_memcpy(jme, p32, JME_RSS, JME_RSS_LEN);
2430
2431         p32 += 0x100 >> 2;
2432         mdio_memcpy(jme, p32, JME_PHY_REG_NR);
2433 }
2434
2435 static int
2436 jme_get_coalesce(struct net_device *netdev, struct ethtool_coalesce *ecmd)
2437 {
2438         struct jme_adapter *jme = netdev_priv(netdev);
2439
2440         ecmd->tx_coalesce_usecs = PCC_TX_TO;
2441         ecmd->tx_max_coalesced_frames = PCC_TX_CNT;
2442
2443         if (test_bit(JME_FLAG_POLL, &jme->flags)) {
2444                 ecmd->use_adaptive_rx_coalesce = false;
2445                 ecmd->rx_coalesce_usecs = 0;
2446                 ecmd->rx_max_coalesced_frames = 0;
2447                 return 0;
2448         }
2449
2450         ecmd->use_adaptive_rx_coalesce = true;
2451
2452         switch (jme->dpi.cur) {
2453         case PCC_P1:
2454                 ecmd->rx_coalesce_usecs = PCC_P1_TO;
2455                 ecmd->rx_max_coalesced_frames = PCC_P1_CNT;
2456                 break;
2457         case PCC_P2:
2458                 ecmd->rx_coalesce_usecs = PCC_P2_TO;
2459                 ecmd->rx_max_coalesced_frames = PCC_P2_CNT;
2460                 break;
2461         case PCC_P3:
2462                 ecmd->rx_coalesce_usecs = PCC_P3_TO;
2463                 ecmd->rx_max_coalesced_frames = PCC_P3_CNT;
2464                 break;
2465         default:
2466                 break;
2467         }
2468
2469         return 0;
2470 }
2471
2472 static int
2473 jme_set_coalesce(struct net_device *netdev, struct ethtool_coalesce *ecmd)
2474 {
2475         struct jme_adapter *jme = netdev_priv(netdev);
2476         struct dynpcc_info *dpi = &(jme->dpi);
2477
2478         if (netif_running(netdev))
2479                 return -EBUSY;
2480
2481         if (ecmd->use_adaptive_rx_coalesce &&
2482             test_bit(JME_FLAG_POLL, &jme->flags)) {
2483                 clear_bit(JME_FLAG_POLL, &jme->flags);
2484                 jme->jme_rx = netif_rx;
2485                 dpi->cur                = PCC_P1;
2486                 dpi->attempt            = PCC_P1;
2487                 dpi->cnt                = 0;
2488                 jme_set_rx_pcc(jme, PCC_P1);
2489                 jme_interrupt_mode(jme);
2490         } else if (!(ecmd->use_adaptive_rx_coalesce) &&
2491                    !(test_bit(JME_FLAG_POLL, &jme->flags))) {
2492                 set_bit(JME_FLAG_POLL, &jme->flags);
2493                 jme->jme_rx = netif_receive_skb;
2494                 jme_interrupt_mode(jme);
2495         }
2496
2497         return 0;
2498 }
2499
2500 static void
2501 jme_get_pauseparam(struct net_device *netdev,
2502                         struct ethtool_pauseparam *ecmd)
2503 {
2504         struct jme_adapter *jme = netdev_priv(netdev);
2505         u32 val;
2506
2507         ecmd->tx_pause = (jme->reg_txpfc & TXPFC_PF_EN) != 0;
2508         ecmd->rx_pause = (jme->reg_rxmcs & RXMCS_FLOWCTRL) != 0;
2509
2510         spin_lock_bh(&jme->phy_lock);
2511         val = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_ADVERTISE);
2512         spin_unlock_bh(&jme->phy_lock);
2513
2514         ecmd->autoneg =
2515                 (val & (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM)) != 0;
2516 }
2517
2518 static int
2519 jme_set_pauseparam(struct net_device *netdev,
2520                         struct ethtool_pauseparam *ecmd)
2521 {
2522         struct jme_adapter *jme = netdev_priv(netdev);
2523         u32 val;
2524
2525         if (((jme->reg_txpfc & TXPFC_PF_EN) != 0) ^
2526                 (ecmd->tx_pause != 0)) {
2527
2528                 if (ecmd->tx_pause)
2529                         jme->reg_txpfc |= TXPFC_PF_EN;
2530                 else
2531                         jme->reg_txpfc &= ~TXPFC_PF_EN;
2532
2533                 jwrite32(jme, JME_TXPFC, jme->reg_txpfc);
2534         }
2535
2536         spin_lock_bh(&jme->rxmcs_lock);
2537         if (((jme->reg_rxmcs & RXMCS_FLOWCTRL) != 0) ^
2538                 (ecmd->rx_pause != 0)) {
2539
2540                 if (ecmd->rx_pause)
2541                         jme->reg_rxmcs |= RXMCS_FLOWCTRL;
2542                 else
2543                         jme->reg_rxmcs &= ~RXMCS_FLOWCTRL;
2544
2545                 jwrite32(jme, JME_RXMCS, jme->reg_rxmcs);
2546         }
2547         spin_unlock_bh(&jme->rxmcs_lock);
2548
2549         spin_lock_bh(&jme->phy_lock);
2550         val = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_ADVERTISE);
2551         if (((val & (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM)) != 0) ^
2552                 (ecmd->autoneg != 0)) {
2553
2554                 if (ecmd->autoneg)
2555                         val |= (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
2556                 else
2557                         val &= ~(ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
2558
2559                 jme_mdio_write(jme->dev, jme->mii_if.phy_id,
2560                                 MII_ADVERTISE, val);
2561         }
2562         spin_unlock_bh(&jme->phy_lock);
2563
2564         return 0;
2565 }
2566
2567 static void
2568 jme_get_wol(struct net_device *netdev,
2569                 struct ethtool_wolinfo *wol)
2570 {
2571         struct jme_adapter *jme = netdev_priv(netdev);
2572
2573         wol->supported = WAKE_MAGIC | WAKE_PHY;
2574
2575         wol->wolopts = 0;
2576
2577         if (jme->reg_pmcs & (PMCS_LFEN | PMCS_LREN))
2578                 wol->wolopts |= WAKE_PHY;
2579
2580         if (jme->reg_pmcs & PMCS_MFEN)
2581                 wol->wolopts |= WAKE_MAGIC;
2582
2583 }
2584
2585 static int
2586 jme_set_wol(struct net_device *netdev,
2587                 struct ethtool_wolinfo *wol)
2588 {
2589         struct jme_adapter *jme = netdev_priv(netdev);
2590
2591         if (wol->wolopts & (WAKE_MAGICSECURE |
2592                                 WAKE_UCAST |
2593                                 WAKE_MCAST |
2594                                 WAKE_BCAST |
2595                                 WAKE_ARP))
2596                 return -EOPNOTSUPP;
2597
2598         jme->reg_pmcs = 0;
2599
2600         if (wol->wolopts & WAKE_PHY)
2601                 jme->reg_pmcs |= PMCS_LFEN | PMCS_LREN;
2602
2603         if (wol->wolopts & WAKE_MAGIC)
2604                 jme->reg_pmcs |= PMCS_MFEN;
2605
2606         return 0;
2607 }
2608
2609 static int
2610 jme_get_link_ksettings(struct net_device *netdev,
2611                        struct ethtool_link_ksettings *cmd)
2612 {
2613         struct jme_adapter *jme = netdev_priv(netdev);
2614
2615         spin_lock_bh(&jme->phy_lock);
2616         mii_ethtool_get_link_ksettings(&jme->mii_if, cmd);
2617         spin_unlock_bh(&jme->phy_lock);
2618         return 0;
2619 }
2620
2621 static int
2622 jme_set_link_ksettings(struct net_device *netdev,
2623                        const struct ethtool_link_ksettings *cmd)
2624 {
2625         struct jme_adapter *jme = netdev_priv(netdev);
2626         int rc, fdc = 0;
2627
2628         if (cmd->base.speed == SPEED_1000 &&
2629             cmd->base.autoneg != AUTONEG_ENABLE)
2630                 return -EINVAL;
2631
2632         /*
2633          * Check If user changed duplex only while force_media.
2634          * Hardware would not generate link change interrupt.
2635          */
2636         if (jme->mii_if.force_media &&
2637             cmd->base.autoneg != AUTONEG_ENABLE &&
2638             (jme->mii_if.full_duplex != cmd->base.duplex))
2639                 fdc = 1;
2640
2641         spin_lock_bh(&jme->phy_lock);
2642         rc = mii_ethtool_set_link_ksettings(&jme->mii_if, cmd);
2643         spin_unlock_bh(&jme->phy_lock);
2644
2645         if (!rc) {
2646                 if (fdc)
2647                         jme_reset_link(jme);
2648                 jme->old_cmd = *cmd;
2649                 set_bit(JME_FLAG_SSET, &jme->flags);
2650         }
2651
2652         return rc;
2653 }
2654
2655 static int
2656 jme_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd)
2657 {
2658         int rc;
2659         struct jme_adapter *jme = netdev_priv(netdev);
2660         struct mii_ioctl_data *mii_data = if_mii(rq);
2661         unsigned int duplex_chg;
2662
2663         if (cmd == SIOCSMIIREG) {
2664                 u16 val = mii_data->val_in;
2665                 if (!(val & (BMCR_RESET|BMCR_ANENABLE)) &&
2666                     (val & BMCR_SPEED1000))
2667                         return -EINVAL;
2668         }
2669
2670         spin_lock_bh(&jme->phy_lock);
2671         rc = generic_mii_ioctl(&jme->mii_if, mii_data, cmd, &duplex_chg);
2672         spin_unlock_bh(&jme->phy_lock);
2673
2674         if (!rc && (cmd == SIOCSMIIREG)) {
2675                 if (duplex_chg)
2676                         jme_reset_link(jme);
2677                 jme_get_link_ksettings(netdev, &jme->old_cmd);
2678                 set_bit(JME_FLAG_SSET, &jme->flags);
2679         }
2680
2681         return rc;
2682 }
2683
2684 static u32
2685 jme_get_link(struct net_device *netdev)
2686 {
2687         struct jme_adapter *jme = netdev_priv(netdev);
2688         return jread32(jme, JME_PHY_LINK) & PHY_LINK_UP;
2689 }
2690
2691 static u32
2692 jme_get_msglevel(struct net_device *netdev)
2693 {
2694         struct jme_adapter *jme = netdev_priv(netdev);
2695         return jme->msg_enable;
2696 }
2697
2698 static void
2699 jme_set_msglevel(struct net_device *netdev, u32 value)
2700 {
2701         struct jme_adapter *jme = netdev_priv(netdev);
2702         jme->msg_enable = value;
2703 }
2704
2705 static netdev_features_t
2706 jme_fix_features(struct net_device *netdev, netdev_features_t features)
2707 {
2708         if (netdev->mtu > 1900)
2709                 features &= ~(NETIF_F_ALL_TSO | NETIF_F_CSUM_MASK);
2710         return features;
2711 }
2712
2713 static int
2714 jme_set_features(struct net_device *netdev, netdev_features_t features)
2715 {
2716         struct jme_adapter *jme = netdev_priv(netdev);
2717
2718         spin_lock_bh(&jme->rxmcs_lock);
2719         if (features & NETIF_F_RXCSUM)
2720                 jme->reg_rxmcs |= RXMCS_CHECKSUM;
2721         else
2722                 jme->reg_rxmcs &= ~RXMCS_CHECKSUM;
2723         jwrite32(jme, JME_RXMCS, jme->reg_rxmcs);
2724         spin_unlock_bh(&jme->rxmcs_lock);
2725
2726         return 0;
2727 }
2728
2729 #ifdef CONFIG_NET_POLL_CONTROLLER
2730 static void jme_netpoll(struct net_device *dev)
2731 {
2732         unsigned long flags;
2733
2734         local_irq_save(flags);
2735         jme_intr(dev->irq, dev);
2736         local_irq_restore(flags);
2737 }
2738 #endif
2739
2740 static int
2741 jme_nway_reset(struct net_device *netdev)
2742 {
2743         struct jme_adapter *jme = netdev_priv(netdev);
2744         jme_restart_an(jme);
2745         return 0;
2746 }
2747
2748 static u8
2749 jme_smb_read(struct jme_adapter *jme, unsigned int addr)
2750 {
2751         u32 val;
2752         int to;
2753
2754         val = jread32(jme, JME_SMBCSR);
2755         to = JME_SMB_BUSY_TIMEOUT;
2756         while ((val & SMBCSR_BUSY) && --to) {
2757                 msleep(1);
2758                 val = jread32(jme, JME_SMBCSR);
2759         }
2760         if (!to) {
2761                 netif_err(jme, hw, jme->dev, "SMB Bus Busy\n");
2762                 return 0xFF;
2763         }
2764
2765         jwrite32(jme, JME_SMBINTF,
2766                 ((addr << SMBINTF_HWADDR_SHIFT) & SMBINTF_HWADDR) |
2767                 SMBINTF_HWRWN_READ |
2768                 SMBINTF_HWCMD);
2769
2770         val = jread32(jme, JME_SMBINTF);
2771         to = JME_SMB_BUSY_TIMEOUT;
2772         while ((val & SMBINTF_HWCMD) && --to) {
2773                 msleep(1);
2774                 val = jread32(jme, JME_SMBINTF);
2775         }
2776         if (!to) {
2777                 netif_err(jme, hw, jme->dev, "SMB Bus Busy\n");
2778                 return 0xFF;
2779         }
2780
2781         return (val & SMBINTF_HWDATR) >> SMBINTF_HWDATR_SHIFT;
2782 }
2783
2784 static void
2785 jme_smb_write(struct jme_adapter *jme, unsigned int addr, u8 data)
2786 {
2787         u32 val;
2788         int to;
2789
2790         val = jread32(jme, JME_SMBCSR);
2791         to = JME_SMB_BUSY_TIMEOUT;
2792         while ((val & SMBCSR_BUSY) && --to) {
2793                 msleep(1);
2794                 val = jread32(jme, JME_SMBCSR);
2795         }
2796         if (!to) {
2797                 netif_err(jme, hw, jme->dev, "SMB Bus Busy\n");
2798                 return;
2799         }
2800
2801         jwrite32(jme, JME_SMBINTF,
2802                 ((data << SMBINTF_HWDATW_SHIFT) & SMBINTF_HWDATW) |
2803                 ((addr << SMBINTF_HWADDR_SHIFT) & SMBINTF_HWADDR) |
2804                 SMBINTF_HWRWN_WRITE |
2805                 SMBINTF_HWCMD);
2806
2807         val = jread32(jme, JME_SMBINTF);
2808         to = JME_SMB_BUSY_TIMEOUT;
2809         while ((val & SMBINTF_HWCMD) && --to) {
2810                 msleep(1);
2811                 val = jread32(jme, JME_SMBINTF);
2812         }
2813         if (!to) {
2814                 netif_err(jme, hw, jme->dev, "SMB Bus Busy\n");
2815                 return;
2816         }
2817
2818         mdelay(2);
2819 }
2820
2821 static int
2822 jme_get_eeprom_len(struct net_device *netdev)
2823 {
2824         struct jme_adapter *jme = netdev_priv(netdev);
2825         u32 val;
2826         val = jread32(jme, JME_SMBCSR);
2827         return (val & SMBCSR_EEPROMD) ? JME_SMB_LEN : 0;
2828 }
2829
2830 static int
2831 jme_get_eeprom(struct net_device *netdev,
2832                 struct ethtool_eeprom *eeprom, u8 *data)
2833 {
2834         struct jme_adapter *jme = netdev_priv(netdev);
2835         int i, offset = eeprom->offset, len = eeprom->len;
2836
2837         /*
2838          * ethtool will check the boundary for us
2839          */
2840         eeprom->magic = JME_EEPROM_MAGIC;
2841         for (i = 0 ; i < len ; ++i)
2842                 data[i] = jme_smb_read(jme, i + offset);
2843
2844         return 0;
2845 }
2846
2847 static int
2848 jme_set_eeprom(struct net_device *netdev,
2849                 struct ethtool_eeprom *eeprom, u8 *data)
2850 {
2851         struct jme_adapter *jme = netdev_priv(netdev);
2852         int i, offset = eeprom->offset, len = eeprom->len;
2853
2854         if (eeprom->magic != JME_EEPROM_MAGIC)
2855                 return -EINVAL;
2856
2857         /*
2858          * ethtool will check the boundary for us
2859          */
2860         for (i = 0 ; i < len ; ++i)
2861                 jme_smb_write(jme, i + offset, data[i]);
2862
2863         return 0;
2864 }
2865
2866 static const struct ethtool_ops jme_ethtool_ops = {
2867         .get_drvinfo            = jme_get_drvinfo,
2868         .get_regs_len           = jme_get_regs_len,
2869         .get_regs               = jme_get_regs,
2870         .get_coalesce           = jme_get_coalesce,
2871         .set_coalesce           = jme_set_coalesce,
2872         .get_pauseparam         = jme_get_pauseparam,
2873         .set_pauseparam         = jme_set_pauseparam,
2874         .get_wol                = jme_get_wol,
2875         .set_wol                = jme_set_wol,
2876         .get_link               = jme_get_link,
2877         .get_msglevel           = jme_get_msglevel,
2878         .set_msglevel           = jme_set_msglevel,
2879         .nway_reset             = jme_nway_reset,
2880         .get_eeprom_len         = jme_get_eeprom_len,
2881         .get_eeprom             = jme_get_eeprom,
2882         .set_eeprom             = jme_set_eeprom,
2883         .get_link_ksettings     = jme_get_link_ksettings,
2884         .set_link_ksettings     = jme_set_link_ksettings,
2885 };
2886
2887 static int
2888 jme_pci_dma64(struct pci_dev *pdev)
2889 {
2890         if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250 &&
2891             !pci_set_dma_mask(pdev, DMA_BIT_MASK(64)))
2892                 if (!pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)))
2893                         return 1;
2894
2895         if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250 &&
2896             !pci_set_dma_mask(pdev, DMA_BIT_MASK(40)))
2897                 if (!pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(40)))
2898                         return 1;
2899
2900         if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32)))
2901                 if (!pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)))
2902                         return 0;
2903
2904         return -1;
2905 }
2906
2907 static inline void
2908 jme_phy_init(struct jme_adapter *jme)
2909 {
2910         u16 reg26;
2911
2912         reg26 = jme_mdio_read(jme->dev, jme->mii_if.phy_id, 26);
2913         jme_mdio_write(jme->dev, jme->mii_if.phy_id, 26, reg26 | 0x1000);
2914 }
2915
2916 static inline void
2917 jme_check_hw_ver(struct jme_adapter *jme)
2918 {
2919         u32 chipmode;
2920
2921         chipmode = jread32(jme, JME_CHIPMODE);
2922
2923         jme->fpgaver = (chipmode & CM_FPGAVER_MASK) >> CM_FPGAVER_SHIFT;
2924         jme->chiprev = (chipmode & CM_CHIPREV_MASK) >> CM_CHIPREV_SHIFT;
2925         jme->chip_main_rev = jme->chiprev & 0xF;
2926         jme->chip_sub_rev = (jme->chiprev >> 4) & 0xF;
2927 }
2928
2929 static const struct net_device_ops jme_netdev_ops = {
2930         .ndo_open               = jme_open,
2931         .ndo_stop               = jme_close,
2932         .ndo_validate_addr      = eth_validate_addr,
2933         .ndo_do_ioctl           = jme_ioctl,
2934         .ndo_start_xmit         = jme_start_xmit,
2935         .ndo_set_mac_address    = jme_set_macaddr,
2936         .ndo_set_rx_mode        = jme_set_multi,
2937         .ndo_change_mtu         = jme_change_mtu,
2938         .ndo_tx_timeout         = jme_tx_timeout,
2939         .ndo_fix_features       = jme_fix_features,
2940         .ndo_set_features       = jme_set_features,
2941 #ifdef CONFIG_NET_POLL_CONTROLLER
2942         .ndo_poll_controller    = jme_netpoll,
2943 #endif
2944 };
2945
2946 static int
2947 jme_init_one(struct pci_dev *pdev,
2948              const struct pci_device_id *ent)
2949 {
2950         int rc = 0, using_dac, i;
2951         struct net_device *netdev;
2952         struct jme_adapter *jme;
2953         u16 bmcr, bmsr;
2954         u32 apmc;
2955
2956         /*
2957          * set up PCI device basics
2958          */
2959         pci_disable_link_state(pdev, PCIE_LINK_STATE_L0S | PCIE_LINK_STATE_L1 |
2960                                PCIE_LINK_STATE_CLKPM);
2961
2962         rc = pci_enable_device(pdev);
2963         if (rc) {
2964                 pr_err("Cannot enable PCI device\n");
2965                 goto err_out;
2966         }
2967
2968         using_dac = jme_pci_dma64(pdev);
2969         if (using_dac < 0) {
2970                 pr_err("Cannot set PCI DMA Mask\n");
2971                 rc = -EIO;
2972                 goto err_out_disable_pdev;
2973         }
2974
2975         if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
2976                 pr_err("No PCI resource region found\n");
2977                 rc = -ENOMEM;
2978                 goto err_out_disable_pdev;
2979         }
2980
2981         rc = pci_request_regions(pdev, DRV_NAME);
2982         if (rc) {
2983                 pr_err("Cannot obtain PCI resource region\n");
2984                 goto err_out_disable_pdev;
2985         }
2986
2987         pci_set_master(pdev);
2988
2989         /*
2990          * alloc and init net device
2991          */
2992         netdev = alloc_etherdev(sizeof(*jme));
2993         if (!netdev) {
2994                 rc = -ENOMEM;
2995                 goto err_out_release_regions;
2996         }
2997         netdev->netdev_ops = &jme_netdev_ops;
2998         netdev->ethtool_ops             = &jme_ethtool_ops;
2999         netdev->watchdog_timeo          = TX_TIMEOUT;
3000         netdev->hw_features             =       NETIF_F_IP_CSUM |
3001                                                 NETIF_F_IPV6_CSUM |
3002                                                 NETIF_F_SG |
3003                                                 NETIF_F_TSO |
3004                                                 NETIF_F_TSO6 |
3005                                                 NETIF_F_RXCSUM;
3006         netdev->features                =       NETIF_F_IP_CSUM |
3007                                                 NETIF_F_IPV6_CSUM |
3008                                                 NETIF_F_SG |
3009                                                 NETIF_F_TSO |
3010                                                 NETIF_F_TSO6 |
3011                                                 NETIF_F_HW_VLAN_CTAG_TX |
3012                                                 NETIF_F_HW_VLAN_CTAG_RX;
3013         if (using_dac)
3014                 netdev->features        |=      NETIF_F_HIGHDMA;
3015
3016         /* MTU range: 1280 - 9202*/
3017         netdev->min_mtu = IPV6_MIN_MTU;
3018         netdev->max_mtu = MAX_ETHERNET_JUMBO_PACKET_SIZE - ETH_HLEN;
3019
3020         SET_NETDEV_DEV(netdev, &pdev->dev);
3021         pci_set_drvdata(pdev, netdev);
3022
3023         /*
3024          * init adapter info
3025          */
3026         jme = netdev_priv(netdev);
3027         jme->pdev = pdev;
3028         jme->dev = netdev;
3029         jme->jme_rx = netif_rx;
3030         jme->old_mtu = netdev->mtu = 1500;
3031         jme->phylink = 0;
3032         jme->tx_ring_size = 1 << 10;
3033         jme->tx_ring_mask = jme->tx_ring_size - 1;
3034         jme->tx_wake_threshold = 1 << 9;
3035         jme->rx_ring_size = 1 << 9;
3036         jme->rx_ring_mask = jme->rx_ring_size - 1;
3037         jme->msg_enable = JME_DEF_MSG_ENABLE;
3038         jme->regs = ioremap(pci_resource_start(pdev, 0),
3039                              pci_resource_len(pdev, 0));
3040         if (!(jme->regs)) {
3041                 pr_err("Mapping PCI resource region error\n");
3042                 rc = -ENOMEM;
3043                 goto err_out_free_netdev;
3044         }
3045
3046         if (no_pseudohp) {
3047                 apmc = jread32(jme, JME_APMC) & ~JME_APMC_PSEUDO_HP_EN;
3048                 jwrite32(jme, JME_APMC, apmc);
3049         } else if (force_pseudohp) {
3050                 apmc = jread32(jme, JME_APMC) | JME_APMC_PSEUDO_HP_EN;
3051                 jwrite32(jme, JME_APMC, apmc);
3052         }
3053
3054         NETIF_NAPI_SET(netdev, &jme->napi, jme_poll, NAPI_POLL_WEIGHT)
3055
3056         spin_lock_init(&jme->phy_lock);
3057         spin_lock_init(&jme->macaddr_lock);
3058         spin_lock_init(&jme->rxmcs_lock);
3059
3060         atomic_set(&jme->link_changing, 1);
3061         atomic_set(&jme->rx_cleaning, 1);
3062         atomic_set(&jme->tx_cleaning, 1);
3063         atomic_set(&jme->rx_empty, 1);
3064
3065         tasklet_init(&jme->pcc_task,
3066                      jme_pcc_tasklet,
3067                      (unsigned long) jme);
3068         jme->dpi.cur = PCC_P1;
3069
3070         jme->reg_ghc = 0;
3071         jme->reg_rxcs = RXCS_DEFAULT;
3072         jme->reg_rxmcs = RXMCS_DEFAULT;
3073         jme->reg_txpfc = 0;
3074         jme->reg_pmcs = PMCS_MFEN;
3075         jme->reg_gpreg1 = GPREG1_DEFAULT;
3076
3077         if (jme->reg_rxmcs & RXMCS_CHECKSUM)
3078                 netdev->features |= NETIF_F_RXCSUM;
3079
3080         /*
3081          * Get Max Read Req Size from PCI Config Space
3082          */
3083         pci_read_config_byte(pdev, PCI_DCSR_MRRS, &jme->mrrs);
3084         jme->mrrs &= PCI_DCSR_MRRS_MASK;
3085         switch (jme->mrrs) {
3086         case MRRS_128B:
3087                 jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_128B;
3088                 break;
3089         case MRRS_256B:
3090                 jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_256B;
3091                 break;
3092         default:
3093                 jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_512B;
3094                 break;
3095         }
3096
3097         /*
3098          * Must check before reset_mac_processor
3099          */
3100         jme_check_hw_ver(jme);
3101         jme->mii_if.dev = netdev;
3102         if (jme->fpgaver) {
3103                 jme->mii_if.phy_id = 0;
3104                 for (i = 1 ; i < 32 ; ++i) {
3105                         bmcr = jme_mdio_read(netdev, i, MII_BMCR);
3106                         bmsr = jme_mdio_read(netdev, i, MII_BMSR);
3107                         if (bmcr != 0xFFFFU && (bmcr != 0 || bmsr != 0)) {
3108                                 jme->mii_if.phy_id = i;
3109                                 break;
3110                         }
3111                 }
3112
3113                 if (!jme->mii_if.phy_id) {
3114                         rc = -EIO;
3115                         pr_err("Can not find phy_id\n");
3116                         goto err_out_unmap;
3117                 }
3118
3119                 jme->reg_ghc |= GHC_LINK_POLL;
3120         } else {
3121                 jme->mii_if.phy_id = 1;
3122         }
3123         if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250)
3124                 jme->mii_if.supports_gmii = true;
3125         else
3126                 jme->mii_if.supports_gmii = false;
3127         jme->mii_if.phy_id_mask = 0x1F;
3128         jme->mii_if.reg_num_mask = 0x1F;
3129         jme->mii_if.mdio_read = jme_mdio_read;
3130         jme->mii_if.mdio_write = jme_mdio_write;
3131
3132         jme_clear_pm_disable_wol(jme);
3133         device_init_wakeup(&pdev->dev, true);
3134
3135         jme_set_phyfifo_5level(jme);
3136         jme->pcirev = pdev->revision;
3137         if (!jme->fpgaver)
3138                 jme_phy_init(jme);
3139         jme_phy_off(jme);
3140
3141         /*
3142          * Reset MAC processor and reload EEPROM for MAC Address
3143          */
3144         jme_reset_mac_processor(jme);
3145         rc = jme_reload_eeprom(jme);
3146         if (rc) {
3147                 pr_err("Reload eeprom for reading MAC Address error\n");
3148                 goto err_out_unmap;
3149         }
3150         jme_load_macaddr(netdev);
3151
3152         /*
3153          * Tell stack that we are not ready to work until open()
3154          */
3155         netif_carrier_off(netdev);
3156
3157         rc = register_netdev(netdev);
3158         if (rc) {
3159                 pr_err("Cannot register net device\n");
3160                 goto err_out_unmap;
3161         }
3162
3163         netif_info(jme, probe, jme->dev, "%s%s chiprev:%x pcirev:%x macaddr:%pM\n",
3164                    (jme->pdev->device == PCI_DEVICE_ID_JMICRON_JMC250) ?
3165                    "JMC250 Gigabit Ethernet" :
3166                    (jme->pdev->device == PCI_DEVICE_ID_JMICRON_JMC260) ?
3167                    "JMC260 Fast Ethernet" : "Unknown",
3168                    (jme->fpgaver != 0) ? " (FPGA)" : "",
3169                    (jme->fpgaver != 0) ? jme->fpgaver : jme->chiprev,
3170                    jme->pcirev, netdev->dev_addr);
3171
3172         return 0;
3173
3174 err_out_unmap:
3175         iounmap(jme->regs);
3176 err_out_free_netdev:
3177         free_netdev(netdev);
3178 err_out_release_regions:
3179         pci_release_regions(pdev);
3180 err_out_disable_pdev:
3181         pci_disable_device(pdev);
3182 err_out:
3183         return rc;
3184 }
3185
3186 static void
3187 jme_remove_one(struct pci_dev *pdev)
3188 {
3189         struct net_device *netdev = pci_get_drvdata(pdev);
3190         struct jme_adapter *jme = netdev_priv(netdev);
3191
3192         unregister_netdev(netdev);
3193         iounmap(jme->regs);
3194         free_netdev(netdev);
3195         pci_release_regions(pdev);
3196         pci_disable_device(pdev);
3197
3198 }
3199
3200 static void
3201 jme_shutdown(struct pci_dev *pdev)
3202 {
3203         struct net_device *netdev = pci_get_drvdata(pdev);
3204         struct jme_adapter *jme = netdev_priv(netdev);
3205
3206         jme_powersave_phy(jme);
3207         pci_pme_active(pdev, true);
3208 }
3209
3210 #ifdef CONFIG_PM_SLEEP
3211 static int
3212 jme_suspend(struct device *dev)
3213 {
3214         struct pci_dev *pdev = to_pci_dev(dev);
3215         struct net_device *netdev = pci_get_drvdata(pdev);
3216         struct jme_adapter *jme = netdev_priv(netdev);
3217
3218         if (!netif_running(netdev))
3219                 return 0;
3220
3221         atomic_dec(&jme->link_changing);
3222
3223         netif_device_detach(netdev);
3224         netif_stop_queue(netdev);
3225         jme_stop_irq(jme);
3226
3227         tasklet_disable(&jme->txclean_task);
3228         tasklet_disable(&jme->rxclean_task);
3229         tasklet_disable(&jme->rxempty_task);
3230
3231         if (netif_carrier_ok(netdev)) {
3232                 if (test_bit(JME_FLAG_POLL, &jme->flags))
3233                         jme_polling_mode(jme);
3234
3235                 jme_stop_pcc_timer(jme);
3236                 jme_disable_rx_engine(jme);
3237                 jme_disable_tx_engine(jme);
3238                 jme_reset_mac_processor(jme);
3239                 jme_free_rx_resources(jme);
3240                 jme_free_tx_resources(jme);
3241                 netif_carrier_off(netdev);
3242                 jme->phylink = 0;
3243         }
3244
3245         tasklet_enable(&jme->txclean_task);
3246         tasklet_enable(&jme->rxclean_task);
3247         tasklet_enable(&jme->rxempty_task);
3248
3249         jme_powersave_phy(jme);
3250
3251         return 0;
3252 }
3253
3254 static int
3255 jme_resume(struct device *dev)
3256 {
3257         struct pci_dev *pdev = to_pci_dev(dev);
3258         struct net_device *netdev = pci_get_drvdata(pdev);
3259         struct jme_adapter *jme = netdev_priv(netdev);
3260
3261         if (!netif_running(netdev))
3262                 return 0;
3263
3264         jme_clear_pm_disable_wol(jme);
3265         jme_phy_on(jme);
3266         if (test_bit(JME_FLAG_SSET, &jme->flags))
3267                 jme_set_link_ksettings(netdev, &jme->old_cmd);
3268         else
3269                 jme_reset_phy_processor(jme);
3270         jme_phy_calibration(jme);
3271         jme_phy_setEA(jme);
3272         netif_device_attach(netdev);
3273
3274         atomic_inc(&jme->link_changing);
3275
3276         jme_reset_link(jme);
3277
3278         jme_start_irq(jme);
3279
3280         return 0;
3281 }
3282
3283 static SIMPLE_DEV_PM_OPS(jme_pm_ops, jme_suspend, jme_resume);
3284 #define JME_PM_OPS (&jme_pm_ops)
3285
3286 #else
3287
3288 #define JME_PM_OPS NULL
3289 #endif
3290
3291 static const struct pci_device_id jme_pci_tbl[] = {
3292         { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMC250) },
3293         { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMC260) },
3294         { }
3295 };
3296
3297 static struct pci_driver jme_driver = {
3298         .name           = DRV_NAME,
3299         .id_table       = jme_pci_tbl,
3300         .probe          = jme_init_one,
3301         .remove         = jme_remove_one,
3302         .shutdown       = jme_shutdown,
3303         .driver.pm      = JME_PM_OPS,
3304 };
3305
3306 static int __init
3307 jme_init_module(void)
3308 {
3309         pr_info("JMicron JMC2XX ethernet driver version %s\n", DRV_VERSION);
3310         return pci_register_driver(&jme_driver);
3311 }
3312
3313 static void __exit
3314 jme_cleanup_module(void)
3315 {
3316         pci_unregister_driver(&jme_driver);
3317 }
3318
3319 module_init(jme_init_module);
3320 module_exit(jme_cleanup_module);
3321
3322 MODULE_AUTHOR("Guo-Fu Tseng <cooldavid@cooldavid.org>");
3323 MODULE_DESCRIPTION("JMicron JMC2x0 PCI Express Ethernet driver");
3324 MODULE_LICENSE("GPL");
3325 MODULE_VERSION(DRV_VERSION);
3326 MODULE_DEVICE_TABLE(pci, jme_pci_tbl);