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/netdevice.h>
  31 #include <linux/etherdevice.h>
  32 #include <linux/ethtool.h>
  33 #include <linux/mii.h>
  34 #include <linux/crc32.h>
  35 #include <linux/delay.h>
  36 #include <linux/spinlock.h>
  37 #include <linux/in.h>
  38 #include <linux/ip.h>
  39 #include <linux/ipv6.h>
  40 #include <linux/tcp.h>
  41 #include <linux/udp.h>
  42 #include <linux/if_vlan.h>
  43 #include <linux/slab.h>
  44 #include <net/ip6_checksum.h>
  45 #include "jme.h"
  46
  47 static int force_pseudohp = -1;
  48 static int no_pseudohp = -1;
  49 static int no_extplug = -1;
  50 module_param(force_pseudohp, int, 0);
  51 MODULE_PARM_DESC(force_pseudohp,
  52         "Enable pseudo hot-plug feature manually by driver instead of BIOS.");
  53 module_param(no_pseudohp, int, 0);
  54 MODULE_PARM_DESC(no_pseudohp, "Disable pseudo hot-plug feature.");
  55 module_param(no_extplug, int, 0);
  56 MODULE_PARM_DESC(no_extplug,
  57         "Do not use external plug signal for pseudo hot-plug.");
  58
  59 static int
  60 jme_mdio_read(struct net_device *netdev, int phy, int reg)
  61 {
  62         struct jme_adapter *jme = netdev_priv(netdev);
  63         int i, val, again = (reg == MII_BMSR) ? 1 : 0;
  64
  65 read_again:
  66         jwrite32(jme, JME_SMI, SMI_OP_REQ |
  67                                 smi_phy_addr(phy) |
  68                                 smi_reg_addr(reg));
  69
  70         wmb();
  71         for (i = JME_PHY_TIMEOUT * 50 ; i > 0 ; --i) {
  72                 udelay(20);
  73                 val = jread32(jme, JME_SMI);
  74                 if ((val & SMI_OP_REQ) == 0)
  75                         break;
  76         }
  77
  78         if (i == 0) {
  79                 pr_err("phy(%d) read timeout : %d\n", phy, reg);
  80                 return 0;
  81         }
  82
  83         if (again--)
  84                 goto read_again;
  85
  86         return (val & SMI_DATA_MASK) >> SMI_DATA_SHIFT;
  87 }
  88
  89 static void
  90 jme_mdio_write(struct net_device *netdev,
  91                                 int phy, int reg, int val)
  92 {
  93         struct jme_adapter *jme = netdev_priv(netdev);
  94         int i;
  95
  96         jwrite32(jme, JME_SMI, SMI_OP_WRITE | SMI_OP_REQ |
  97                 ((val << SMI_DATA_SHIFT) & SMI_DATA_MASK) |
  98                 smi_phy_addr(phy) | smi_reg_addr(reg));
  99
 100         wmb();
 101         for (i = JME_PHY_TIMEOUT * 50 ; i > 0 ; --i) {
 102                 udelay(20);
 103                 if ((jread32(jme, JME_SMI) & SMI_OP_REQ) == 0)
 104                         break;
 105         }
 106
 107         if (i == 0)
 108                 pr_err("phy(%d) write timeout : %d\n", phy, reg);
 109 }
 110
 111 static inline void
 112 jme_reset_phy_processor(struct jme_adapter *jme)
 113 {
 114         u32 val;
 115
 116         jme_mdio_write(jme->dev,
 117                         jme->mii_if.phy_id,
 118                         MII_ADVERTISE, ADVERTISE_ALL |
 119                         ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
 120
 121         if (jme->pdev->device == PCI_DEVICE_ID_JMICRON_JMC250)
 122                 jme_mdio_write(jme->dev,
 123                                 jme->mii_if.phy_id,
 124                                 MII_CTRL1000,
 125                                 ADVERTISE_1000FULL | ADVERTISE_1000HALF);
 126
 127         val = jme_mdio_read(jme->dev,
 128                                 jme->mii_if.phy_id,
 129                                 MII_BMCR);
 130
 131         jme_mdio_write(jme->dev,
 132                         jme->mii_if.phy_id,
 133                         MII_BMCR, val | BMCR_RESET);
 134 }
 135
 136 static void
 137 jme_setup_wakeup_frame(struct jme_adapter *jme,
 138                        const u32 *mask, u32 crc, int fnr)
 139 {
 140         int i;
 141
 142         /*
 143          * Setup CRC pattern
 144          */
 145         jwrite32(jme, JME_WFOI, WFOI_CRC_SEL | (fnr & WFOI_FRAME_SEL));
 146         wmb();
 147         jwrite32(jme, JME_WFODP, crc);
 148         wmb();
 149
 150         /*
 151          * Setup Mask
 152          */
 153         for (i = 0 ; i < WAKEUP_FRAME_MASK_DWNR ; ++i) {
 154                 jwrite32(jme, JME_WFOI,
 155                                 ((i << WFOI_MASK_SHIFT) & WFOI_MASK_SEL) |
 156                                 (fnr & WFOI_FRAME_SEL));
 157                 wmb();
 158                 jwrite32(jme, JME_WFODP, mask[i]);
 159                 wmb();
 160         }
 161 }
 162
 163 static inline void
 164 jme_mac_rxclk_off(struct jme_adapter *jme)
 165 {
 166         jme->reg_gpreg1 |= GPREG1_RXCLKOFF;
 167         jwrite32f(jme, JME_GPREG1, jme->reg_gpreg1);
 168 }
 169
 170 static inline void
 171 jme_mac_rxclk_on(struct jme_adapter *jme)
 172 {
 173         jme->reg_gpreg1 &= ~GPREG1_RXCLKOFF;
 174         jwrite32f(jme, JME_GPREG1, jme->reg_gpreg1);
 175 }
 176
 177 static inline void
 178 jme_mac_txclk_off(struct jme_adapter *jme)
 179 {
 180         jme->reg_ghc &= ~(GHC_TO_CLK_SRC | GHC_TXMAC_CLK_SRC);
 181         jwrite32f(jme, JME_GHC, jme->reg_ghc);
 182 }
 183
 184 static inline void
 185 jme_mac_txclk_on(struct jme_adapter *jme)
 186 {
 187         u32 speed = jme->reg_ghc & GHC_SPEED;
 188         if (speed == GHC_SPEED_1000M)
 189                 jme->reg_ghc |= GHC_TO_CLK_GPHY | GHC_TXMAC_CLK_GPHY;
 190         else
 191                 jme->reg_ghc |= GHC_TO_CLK_PCIE | GHC_TXMAC_CLK_PCIE;
 192         jwrite32f(jme, JME_GHC, jme->reg_ghc);
 193 }
 194
 195 static inline void
 196 jme_reset_ghc_speed(struct jme_adapter *jme)
 197 {
 198         jme->reg_ghc &= ~(GHC_SPEED | GHC_DPX);
 199         jwrite32f(jme, JME_GHC, jme->reg_ghc);
 200 }
 201
 202 static inline void
 203 jme_reset_250A2_workaround(struct jme_adapter *jme)
 204 {
 205         jme->reg_gpreg1 &= ~(GPREG1_HALFMODEPATCH |
 206                              GPREG1_RSSPATCH);
 207         jwrite32(jme, JME_GPREG1, jme->reg_gpreg1);
 208 }
 209
 210 static inline void
 211 jme_assert_ghc_reset(struct jme_adapter *jme)
 212 {
 213         jme->reg_ghc |= GHC_SWRST;
 214         jwrite32f(jme, JME_GHC, jme->reg_ghc);
 215 }
 216
 217 static inline void
 218 jme_clear_ghc_reset(struct jme_adapter *jme)
 219 {
 220         jme->reg_ghc &= ~GHC_SWRST;
 221         jwrite32f(jme, JME_GHC, jme->reg_ghc);
 222 }
 223
 224 static inline void
 225 jme_reset_mac_processor(struct jme_adapter *jme)
 226 {
 227         static const u32 mask[WAKEUP_FRAME_MASK_DWNR] = {0, 0, 0, 0};
 228         u32 crc = 0xCDCDCDCD;
 229         u32 gpreg0;
 230         int i;
 231
 232         jme_reset_ghc_speed(jme);
 233         jme_reset_250A2_workaround(jme);
 234
 235         jme_mac_rxclk_on(jme);
 236         jme_mac_txclk_on(jme);
 237         udelay(1);
 238         jme_assert_ghc_reset(jme);
 239         udelay(1);
 240         jme_mac_rxclk_off(jme);
 241         jme_mac_txclk_off(jme);
 242         udelay(1);
 243         jme_clear_ghc_reset(jme);
 244         udelay(1);
 245         jme_mac_rxclk_on(jme);
 246         jme_mac_txclk_on(jme);
 247         udelay(1);
 248         jme_mac_rxclk_off(jme);
 249         jme_mac_txclk_off(jme);
 250
 251         jwrite32(jme, JME_RXDBA_LO, 0x00000000);
 252         jwrite32(jme, JME_RXDBA_HI, 0x00000000);
 253         jwrite32(jme, JME_RXQDC, 0x00000000);
 254         jwrite32(jme, JME_RXNDA, 0x00000000);
 255         jwrite32(jme, JME_TXDBA_LO, 0x00000000);
 256         jwrite32(jme, JME_TXDBA_HI, 0x00000000);
 257         jwrite32(jme, JME_TXQDC, 0x00000000);
 258         jwrite32(jme, JME_TXNDA, 0x00000000);
 259
 260         jwrite32(jme, JME_RXMCHT_LO, 0x00000000);
 261         jwrite32(jme, JME_RXMCHT_HI, 0x00000000);
 262         for (i = 0 ; i < WAKEUP_FRAME_NR ; ++i)
 263                 jme_setup_wakeup_frame(jme, mask, crc, i);
 264         if (jme->fpgaver)
 265                 gpreg0 = GPREG0_DEFAULT | GPREG0_LNKINTPOLL;
 266         else
 267                 gpreg0 = GPREG0_DEFAULT;
 268         jwrite32(jme, JME_GPREG0, gpreg0);
 269 }
 270
 271 static inline void
 272 jme_clear_pm(struct jme_adapter *jme)
 273 {
 274         jwrite32(jme, JME_PMCS, PMCS_STMASK | jme->reg_pmcs);
 275 }
 276
 277 static int
 278 jme_reload_eeprom(struct jme_adapter *jme)
 279 {
 280         u32 val;
 281         int i;
 282
 283         val = jread32(jme, JME_SMBCSR);
 284
 285         if (val & SMBCSR_EEPROMD) {
 286                 val |= SMBCSR_CNACK;
 287                 jwrite32(jme, JME_SMBCSR, val);
 288                 val |= SMBCSR_RELOAD;
 289                 jwrite32(jme, JME_SMBCSR, val);
 290                 mdelay(12);
 291
 292                 for (i = JME_EEPROM_RELOAD_TIMEOUT; i > 0; --i) {
 293                         mdelay(1);
 294                         if ((jread32(jme, JME_SMBCSR) & SMBCSR_RELOAD) == 0)
 295                                 break;
 296                 }
 297
 298                 if (i == 0) {
 299                         pr_err("eeprom reload timeout\n");
 300                         return -EIO;
 301                 }
 302         }
 303
 304         return 0;
 305 }
 306
 307 static void
 308 jme_load_macaddr(struct net_device *netdev)
 309 {
 310         struct jme_adapter *jme = netdev_priv(netdev);
 311         unsigned char macaddr[6];
 312         u32 val;
 313
 314         spin_lock_bh(&jme->macaddr_lock);
 315         val = jread32(jme, JME_RXUMA_LO);
 316         macaddr[0] = (val >>  0) & 0xFF;
 317         macaddr[1] = (val >>  8) & 0xFF;
 318         macaddr[2] = (val >> 16) & 0xFF;
 319         macaddr[3] = (val >> 24) & 0xFF;
 320         val = jread32(jme, JME_RXUMA_HI);
 321         macaddr[4] = (val >>  0) & 0xFF;
 322         macaddr[5] = (val >>  8) & 0xFF;
 323         memcpy(netdev->dev_addr, macaddr, 6);
 324         spin_unlock_bh(&jme->macaddr_lock);
 325 }
 326
 327 static inline void
 328 jme_set_rx_pcc(struct jme_adapter *jme, int p)
 329 {
 330         switch (p) {
 331         case PCC_OFF:
 332                 jwrite32(jme, JME_PCCRX0,
 333                         ((PCC_OFF_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
 334                         ((PCC_OFF_CNT << PCCRX_SHIFT) & PCCRX_MASK));
 335                 break;
 336         case PCC_P1:
 337                 jwrite32(jme, JME_PCCRX0,
 338                         ((PCC_P1_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
 339                         ((PCC_P1_CNT << PCCRX_SHIFT) & PCCRX_MASK));
 340                 break;
 341         case PCC_P2:
 342                 jwrite32(jme, JME_PCCRX0,
 343                         ((PCC_P2_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
 344                         ((PCC_P2_CNT << PCCRX_SHIFT) & PCCRX_MASK));
 345                 break;
 346         case PCC_P3:
 347                 jwrite32(jme, JME_PCCRX0,
 348                         ((PCC_P3_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
 349                         ((PCC_P3_CNT << PCCRX_SHIFT) & PCCRX_MASK));
 350                 break;
 351         default:
 352                 break;
 353         }
 354         wmb();
 355
 356         if (!(test_bit(JME_FLAG_POLL, &jme->flags)))
 357                 netif_info(jme, rx_status, jme->dev, "Switched to PCC_P%d\n", p);
 358 }
 359
 360 static void
 361 jme_start_irq(struct jme_adapter *jme)
 362 {
 363         register struct dynpcc_info *dpi = &(jme->dpi);
 364
 365         jme_set_rx_pcc(jme, PCC_P1);
 366         dpi->cur                = PCC_P1;
 367         dpi->attempt            = PCC_P1;
 368         dpi->cnt                = 0;
 369
 370         jwrite32(jme, JME_PCCTX,
 371                         ((PCC_TX_TO << PCCTXTO_SHIFT) & PCCTXTO_MASK) |
 372                         ((PCC_TX_CNT << PCCTX_SHIFT) & PCCTX_MASK) |
 373                         PCCTXQ0_EN
 374                 );
 375
 376         /*
 377          * Enable Interrupts
 378          */
 379         jwrite32(jme, JME_IENS, INTR_ENABLE);
 380 }
 381
 382 static inline void
 383 jme_stop_irq(struct jme_adapter *jme)
 384 {
 385         /*
 386          * Disable Interrupts
 387          */
 388         jwrite32f(jme, JME_IENC, INTR_ENABLE);
 389 }
 390
 391 static u32
 392 jme_linkstat_from_phy(struct jme_adapter *jme)
 393 {
 394         u32 phylink, bmsr;
 395
 396         phylink = jme_mdio_read(jme->dev, jme->mii_if.phy_id, 17);
 397         bmsr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMSR);
 398         if (bmsr & BMSR_ANCOMP)
 399                 phylink |= PHY_LINK_AUTONEG_COMPLETE;
 400
 401         return phylink;
 402 }
 403
 404 static inline void
 405 jme_set_phyfifo_5level(struct jme_adapter *jme)
 406 {
 407         jme_mdio_write(jme->dev, jme->mii_if.phy_id, 27, 0x0004);
 408 }
 409
 410 static inline void
 411 jme_set_phyfifo_8level(struct jme_adapter *jme)
 412 {
 413         jme_mdio_write(jme->dev, jme->mii_if.phy_id, 27, 0x0000);
 414 }
 415
 416 static int
 417 jme_check_link(struct net_device *netdev, int testonly)
 418 {
 419         struct jme_adapter *jme = netdev_priv(netdev);
 420         u32 phylink, cnt = JME_SPDRSV_TIMEOUT, bmcr;
 421         char linkmsg[64];
 422         int rc = 0;
 423
 424         linkmsg[0] = '\0';
 425
 426         if (jme->fpgaver)
 427                 phylink = jme_linkstat_from_phy(jme);
 428         else
 429                 phylink = jread32(jme, JME_PHY_LINK);
 430
 431         if (phylink & PHY_LINK_UP) {
 432                 if (!(phylink & PHY_LINK_AUTONEG_COMPLETE)) {
 433                         /*
 434                          * If we did not enable AN
 435                          * Speed/Duplex Info should be obtained from SMI
 436                          */
 437                         phylink = PHY_LINK_UP;
 438
 439                         bmcr = jme_mdio_read(jme->dev,
 440                                                 jme->mii_if.phy_id,
 441                                                 MII_BMCR);
 442
 443                         phylink |= ((bmcr & BMCR_SPEED1000) &&
 444                                         (bmcr & BMCR_SPEED100) == 0) ?
 445                                         PHY_LINK_SPEED_1000M :
 446                                         (bmcr & BMCR_SPEED100) ?
 447                                         PHY_LINK_SPEED_100M :
 448                                         PHY_LINK_SPEED_10M;
 449
 450                         phylink |= (bmcr & BMCR_FULLDPLX) ?
 451                                          PHY_LINK_DUPLEX : 0;
 452
 453                         strcat(linkmsg, "Forced: ");
 454                 } else {
 455                         /*
 456                          * Keep polling for speed/duplex resolve complete
 457                          */
 458                         while (!(phylink & PHY_LINK_SPEEDDPU_RESOLVED) &&
 459                                 --cnt) {
 460
 461                                 udelay(1);
 462
 463                                 if (jme->fpgaver)
 464                                         phylink = jme_linkstat_from_phy(jme);
 465                                 else
 466                                         phylink = jread32(jme, JME_PHY_LINK);
 467                         }
 468                         if (!cnt)
 469                                 pr_err("Waiting speed resolve timeout\n");
 470
 471                         strcat(linkmsg, "ANed: ");
 472                 }
 473
 474                 if (jme->phylink == phylink) {
 475                         rc = 1;
 476                         goto out;
 477                 }
 478                 if (testonly)
 479                         goto out;
 480
 481                 jme->phylink = phylink;
 482
 483                 /*
 484                  * The speed/duplex setting of jme->reg_ghc already cleared
 485                  * by jme_reset_mac_processor()
 486                  */
 487                 switch (phylink & PHY_LINK_SPEED_MASK) {
 488                 case PHY_LINK_SPEED_10M:
 489                         jme->reg_ghc |= GHC_SPEED_10M;
 490                         strcat(linkmsg, "10 Mbps, ");
 491                         break;
 492                 case PHY_LINK_SPEED_100M:
 493                         jme->reg_ghc |= GHC_SPEED_100M;
 494                         strcat(linkmsg, "100 Mbps, ");
 495                         break;
 496                 case PHY_LINK_SPEED_1000M:
 497                         jme->reg_ghc |= GHC_SPEED_1000M;
 498                         strcat(linkmsg, "1000 Mbps, ");
 499                         break;
 500                 default:
 501                         break;
 502                 }
 503
 504                 if (phylink & PHY_LINK_DUPLEX) {
 505                         jwrite32(jme, JME_TXMCS, TXMCS_DEFAULT);
 506                         jwrite32(jme, JME_TXTRHD, TXTRHD_FULLDUPLEX);
 507                         jme->reg_ghc |= GHC_DPX;
 508                 } else {
 509                         jwrite32(jme, JME_TXMCS, TXMCS_DEFAULT |
 510                                                 TXMCS_BACKOFF |
 511                                                 TXMCS_CARRIERSENSE |
 512                                                 TXMCS_COLLISION);
 513                         jwrite32(jme, JME_TXTRHD, TXTRHD_HALFDUPLEX);
 514                 }
 515
 516                 jwrite32(jme, JME_GHC, jme->reg_ghc);
 517
 518                 if (is_buggy250(jme->pdev->device, jme->chiprev)) {
 519                         jme->reg_gpreg1 &= ~(GPREG1_HALFMODEPATCH |
 520                                              GPREG1_RSSPATCH);
 521                         if (!(phylink & PHY_LINK_DUPLEX))
 522                                 jme->reg_gpreg1 |= GPREG1_HALFMODEPATCH;
 523                         switch (phylink & PHY_LINK_SPEED_MASK) {
 524                         case PHY_LINK_SPEED_10M:
 525                                 jme_set_phyfifo_8level(jme);
 526                                 jme->reg_gpreg1 |= GPREG1_RSSPATCH;
 527                                 break;
 528                         case PHY_LINK_SPEED_100M:
 529                                 jme_set_phyfifo_5level(jme);
 530                                 jme->reg_gpreg1 |= GPREG1_RSSPATCH;
 531                                 break;
 532                         case PHY_LINK_SPEED_1000M:
 533                                 jme_set_phyfifo_8level(jme);
 534                                 break;
 535                         default:
 536                                 break;
 537                         }
 538                 }
 539                 jwrite32(jme, JME_GPREG1, jme->reg_gpreg1);
 540
 541                 strcat(linkmsg, (phylink & PHY_LINK_DUPLEX) ?
 542                                         "Full-Duplex, " :
 543                                         "Half-Duplex, ");
 544                 strcat(linkmsg, (phylink & PHY_LINK_MDI_STAT) ?
 545                                         "MDI-X" :
 546                                         "MDI");
 547                 netif_info(jme, link, jme->dev, "Link is up at %s\n", linkmsg);
 548                 netif_carrier_on(netdev);
 549         } else {
 550                 if (testonly)
 551                         goto out;
 552
 553                 netif_info(jme, link, jme->dev, "Link is down\n");
 554                 jme->phylink = 0;
 555                 netif_carrier_off(netdev);
 556         }
 557
 558 out:
 559         return rc;
 560 }
 561
 562 static int
 563 jme_setup_tx_resources(struct jme_adapter *jme)
 564 {
 565         struct jme_ring *txring = &(jme->txring[0]);
 566
 567         txring->alloc = dma_alloc_coherent(&(jme->pdev->dev),
 568                                    TX_RING_ALLOC_SIZE(jme->tx_ring_size),
 569                                    &(txring->dmaalloc),
 570                                    GFP_ATOMIC);
 571
 572         if (!txring->alloc)
 573                 goto err_set_null;
 574
 575         /*
 576          * 16 Bytes align
 577          */
 578         txring->desc            = (void *)ALIGN((unsigned long)(txring->alloc),
 579                                                 RING_DESC_ALIGN);
 580         txring->dma             = ALIGN(txring->dmaalloc, RING_DESC_ALIGN);
 581         txring->next_to_use     = 0;
 582         atomic_set(&txring->next_to_clean, 0);
 583         atomic_set(&txring->nr_free, jme->tx_ring_size);
 584
 585         txring->bufinf          = kmalloc(sizeof(struct jme_buffer_info) *
 586                                         jme->tx_ring_size, GFP_ATOMIC);
 587         if (unlikely(!(txring->bufinf)))
 588                 goto err_free_txring;
 589
 590         /*
 591          * Initialize Transmit Descriptors
 592          */
 593         memset(txring->alloc, 0, TX_RING_ALLOC_SIZE(jme->tx_ring_size));
 594         memset(txring->bufinf, 0,
 595                 sizeof(struct jme_buffer_info) * jme->tx_ring_size);
 596
 597         return 0;
 598
 599 err_free_txring:
 600         dma_free_coherent(&(jme->pdev->dev),
 601                           TX_RING_ALLOC_SIZE(jme->tx_ring_size),
 602                           txring->alloc,
 603                           txring->dmaalloc);
 604
 605 err_set_null:
 606         txring->desc = NULL;
 607         txring->dmaalloc = 0;
 608         txring->dma = 0;
 609         txring->bufinf = NULL;
 610
 611         return -ENOMEM;
 612 }
 613
 614 static void
 615 jme_free_tx_resources(struct jme_adapter *jme)
 616 {
 617         int i;
 618         struct jme_ring *txring = &(jme->txring[0]);
 619         struct jme_buffer_info *txbi;
 620
 621         if (txring->alloc) {
 622                 if (txring->bufinf) {
 623                         for (i = 0 ; i < jme->tx_ring_size ; ++i) {
 624                                 txbi = txring->bufinf + i;
 625                                 if (txbi->skb) {
 626                                         dev_kfree_skb(txbi->skb);
 627                                         txbi->skb = NULL;
 628                                 }
 629                                 txbi->mapping           = 0;
 630                                 txbi->len               = 0;
 631                                 txbi->nr_desc           = 0;
 632                                 txbi->start_xmit        = 0;
 633                         }
 634                         kfree(txring->bufinf);
 635                 }
 636
 637                 dma_free_coherent(&(jme->pdev->dev),
 638                                   TX_RING_ALLOC_SIZE(jme->tx_ring_size),
 639                                   txring->alloc,
 640                                   txring->dmaalloc);
 641
 642                 txring->alloc           = NULL;
 643                 txring->desc            = NULL;
 644                 txring->dmaalloc        = 0;
 645                 txring->dma             = 0;
 646                 txring->bufinf          = NULL;
 647         }
 648         txring->next_to_use     = 0;
 649         atomic_set(&txring->next_to_clean, 0);
 650         atomic_set(&txring->nr_free, 0);
 651 }
 652
 653 static inline void
 654 jme_enable_tx_engine(struct jme_adapter *jme)
 655 {
 656         /*
 657          * Select Queue 0
 658          */
 659         jwrite32(jme, JME_TXCS, TXCS_DEFAULT | TXCS_SELECT_QUEUE0);
 660         wmb();
 661
 662         /*
 663          * Setup TX Queue 0 DMA Bass Address
 664          */
 665         jwrite32(jme, JME_TXDBA_LO, (__u64)jme->txring[0].dma & 0xFFFFFFFFUL);
 666         jwrite32(jme, JME_TXDBA_HI, (__u64)(jme->txring[0].dma) >> 32);
 667         jwrite32(jme, JME_TXNDA, (__u64)jme->txring[0].dma & 0xFFFFFFFFUL);
 668
 669         /*
 670          * Setup TX Descptor Count
 671          */
 672         jwrite32(jme, JME_TXQDC, jme->tx_ring_size);
 673
 674         /*
 675          * Enable TX Engine
 676          */
 677         wmb();
 678         jwrite32f(jme, JME_TXCS, jme->reg_txcs |
 679                                 TXCS_SELECT_QUEUE0 |
 680                                 TXCS_ENABLE);
 681
 682         /*
 683          * Start clock for TX MAC Processor
 684          */
 685         jme_mac_txclk_on(jme);
 686 }
 687
 688 static inline void
 689 jme_restart_tx_engine(struct jme_adapter *jme)
 690 {
 691         /*
 692          * Restart TX Engine
 693          */
 694         jwrite32(jme, JME_TXCS, jme->reg_txcs |
 695                                 TXCS_SELECT_QUEUE0 |
 696                                 TXCS_ENABLE);
 697 }
 698
 699 static inline void
 700 jme_disable_tx_engine(struct jme_adapter *jme)
 701 {
 702         int i;
 703         u32 val;
 704
 705         /*
 706          * Disable TX Engine
 707          */
 708         jwrite32(jme, JME_TXCS, jme->reg_txcs | TXCS_SELECT_QUEUE0);
 709         wmb();
 710
 711         val = jread32(jme, JME_TXCS);
 712         for (i = JME_TX_DISABLE_TIMEOUT ; (val & TXCS_ENABLE) && i > 0 ; --i) {
 713                 mdelay(1);
 714                 val = jread32(jme, JME_TXCS);
 715                 rmb();
 716         }
 717
 718         if (!i)
 719                 pr_err("Disable TX engine timeout\n");
 720
 721         /*
 722          * Stop clock for TX MAC Processor
 723          */
 724         jme_mac_txclk_off(jme);
 725 }
 726
 727 static void
 728 jme_set_clean_rxdesc(struct jme_adapter *jme, int i)
 729 {
 730         struct jme_ring *rxring = &(jme->rxring[0]);
 731         register struct rxdesc *rxdesc = rxring->desc;
 732         struct jme_buffer_info *rxbi = rxring->bufinf;
 733         rxdesc += i;
 734         rxbi += i;
 735
 736         rxdesc->dw[0] = 0;
 737         rxdesc->dw[1] = 0;
 738         rxdesc->desc1.bufaddrh  = cpu_to_le32((__u64)rxbi->mapping >> 32);
 739         rxdesc->desc1.bufaddrl  = cpu_to_le32(
 740                                         (__u64)rxbi->mapping & 0xFFFFFFFFUL);
 741         rxdesc->desc1.datalen   = cpu_to_le16(rxbi->len);
 742         if (jme->dev->features & NETIF_F_HIGHDMA)
 743                 rxdesc->desc1.flags = RXFLAG_64BIT;
 744         wmb();
 745         rxdesc->desc1.flags     |= RXFLAG_OWN | RXFLAG_INT;
 746 }
 747
 748 static int
 749 jme_make_new_rx_buf(struct jme_adapter *jme, int i)
 750 {
 751         struct jme_ring *rxring = &(jme->rxring[0]);
 752         struct jme_buffer_info *rxbi = rxring->bufinf + i;
 753         struct sk_buff *skb;
 754         dma_addr_t mapping;
 755
 756         skb = netdev_alloc_skb(jme->dev,
 757                 jme->dev->mtu + RX_EXTRA_LEN);
 758         if (unlikely(!skb))
 759                 return -ENOMEM;
 760
 761         mapping = pci_map_page(jme->pdev, virt_to_page(skb->data),
 762                                offset_in_page(skb->data), skb_tailroom(skb),
 763                                PCI_DMA_FROMDEVICE);
 764         if (unlikely(pci_dma_mapping_error(jme->pdev, mapping))) {
 765                 dev_kfree_skb(skb);
 766                 return -ENOMEM;
 767         }
 768
 769         if (likely(rxbi->mapping))
 770                 pci_unmap_page(jme->pdev, rxbi->mapping,
 771                                rxbi->len, PCI_DMA_FROMDEVICE);
 772
 773         rxbi->skb = skb;
 774         rxbi->len = skb_tailroom(skb);
 775         rxbi->mapping = mapping;
 776         return 0;
 777 }
 778
 779 static void
 780 jme_free_rx_buf(struct jme_adapter *jme, int i)
 781 {
 782         struct jme_ring *rxring = &(jme->rxring[0]);
 783         struct jme_buffer_info *rxbi = rxring->bufinf;
 784         rxbi += i;
 785
 786         if (rxbi->skb) {
 787                 pci_unmap_page(jme->pdev,
 788                                  rxbi->mapping,
 789                                  rxbi->len,
 790                                  PCI_DMA_FROMDEVICE);
 791                 dev_kfree_skb(rxbi->skb);
 792                 rxbi->skb = NULL;
 793                 rxbi->mapping = 0;
 794                 rxbi->len = 0;
 795         }
 796 }
 797
 798 static void
 799 jme_free_rx_resources(struct jme_adapter *jme)
 800 {
 801         int i;
 802         struct jme_ring *rxring = &(jme->rxring[0]);
 803
 804         if (rxring->alloc) {
 805                 if (rxring->bufinf) {
 806                         for (i = 0 ; i < jme->rx_ring_size ; ++i)
 807                                 jme_free_rx_buf(jme, i);
 808                         kfree(rxring->bufinf);
 809                 }
 810
 811                 dma_free_coherent(&(jme->pdev->dev),
 812                                   RX_RING_ALLOC_SIZE(jme->rx_ring_size),
 813                                   rxring->alloc,
 814                                   rxring->dmaalloc);
 815                 rxring->alloc    = NULL;
 816                 rxring->desc     = NULL;
 817                 rxring->dmaalloc = 0;
 818                 rxring->dma      = 0;
 819                 rxring->bufinf   = NULL;
 820         }
 821         rxring->next_to_use   = 0;
 822         atomic_set(&rxring->next_to_clean, 0);
 823 }
 824
 825 static int
 826 jme_setup_rx_resources(struct jme_adapter *jme)
 827 {
 828         int i;
 829         struct jme_ring *rxring = &(jme->rxring[0]);
 830
 831         rxring->alloc = dma_alloc_coherent(&(jme->pdev->dev),
 832                                    RX_RING_ALLOC_SIZE(jme->rx_ring_size),
 833                                    &(rxring->dmaalloc),
 834                                    GFP_ATOMIC);
 835         if (!rxring->alloc)
 836                 goto err_set_null;
 837
 838         /*
 839          * 16 Bytes align
 840          */
 841         rxring->desc            = (void *)ALIGN((unsigned long)(rxring->alloc),
 842                                                 RING_DESC_ALIGN);
 843         rxring->dma             = ALIGN(rxring->dmaalloc, RING_DESC_ALIGN);
 844         rxring->next_to_use     = 0;
 845         atomic_set(&rxring->next_to_clean, 0);
 846
 847         rxring->bufinf          = kmalloc(sizeof(struct jme_buffer_info) *
 848                                         jme->rx_ring_size, GFP_ATOMIC);
 849         if (unlikely(!(rxring->bufinf)))
 850                 goto err_free_rxring;
 851
 852         /*
 853          * Initiallize Receive Descriptors
 854          */
 855         memset(rxring->bufinf, 0,
 856                 sizeof(struct jme_buffer_info) * jme->rx_ring_size);
 857         for (i = 0 ; i < jme->rx_ring_size ; ++i) {
 858                 if (unlikely(jme_make_new_rx_buf(jme, i))) {
 859                         jme_free_rx_resources(jme);
 860                         return -ENOMEM;
 861                 }
 862
 863                 jme_set_clean_rxdesc(jme, i);
 864         }
 865
 866         return 0;
 867
 868 err_free_rxring:
 869         dma_free_coherent(&(jme->pdev->dev),
 870                           RX_RING_ALLOC_SIZE(jme->rx_ring_size),
 871                           rxring->alloc,
 872                           rxring->dmaalloc);
 873 err_set_null:
 874         rxring->desc = NULL;
 875         rxring->dmaalloc = 0;
 876         rxring->dma = 0;
 877         rxring->bufinf = NULL;
 878
 879         return -ENOMEM;
 880 }
 881
 882 static inline void
 883 jme_enable_rx_engine(struct jme_adapter *jme)
 884 {
 885         /*
 886          * Select Queue 0
 887          */
 888         jwrite32(jme, JME_RXCS, jme->reg_rxcs |
 889                                 RXCS_QUEUESEL_Q0);
 890         wmb();
 891
 892         /*
 893          * Setup RX DMA Bass Address
 894          */
 895         jwrite32(jme, JME_RXDBA_LO, (__u64)(jme->rxring[0].dma) & 0xFFFFFFFFUL);
 896         jwrite32(jme, JME_RXDBA_HI, (__u64)(jme->rxring[0].dma) >> 32);
 897         jwrite32(jme, JME_RXNDA, (__u64)(jme->rxring[0].dma) & 0xFFFFFFFFUL);
 898
 899         /*
 900          * Setup RX Descriptor Count
 901          */
 902         jwrite32(jme, JME_RXQDC, jme->rx_ring_size);
 903
 904         /*
 905          * Setup Unicast Filter
 906          */
 907         jme_set_unicastaddr(jme->dev);
 908         jme_set_multi(jme->dev);
 909
 910         /*
 911          * Enable RX Engine
 912          */
 913         wmb();
 914         jwrite32f(jme, JME_RXCS, jme->reg_rxcs |
 915                                 RXCS_QUEUESEL_Q0 |
 916                                 RXCS_ENABLE |
 917                                 RXCS_QST);
 918
 919         /*
 920          * Start clock for RX MAC Processor
 921          */
 922         jme_mac_rxclk_on(jme);
 923 }
 924
 925 static inline void
 926 jme_restart_rx_engine(struct jme_adapter *jme)
 927 {
 928         /*
 929          * Start RX Engine
 930          */
 931         jwrite32(jme, JME_RXCS, jme->reg_rxcs |
 932                                 RXCS_QUEUESEL_Q0 |
 933                                 RXCS_ENABLE |
 934                                 RXCS_QST);
 935 }
 936
 937 static inline void
 938 jme_disable_rx_engine(struct jme_adapter *jme)
 939 {
 940         int i;
 941         u32 val;
 942
 943         /*
 944          * Disable RX Engine
 945          */
 946         jwrite32(jme, JME_RXCS, jme->reg_rxcs);
 947         wmb();
 948
 949         val = jread32(jme, JME_RXCS);
 950         for (i = JME_RX_DISABLE_TIMEOUT ; (val & RXCS_ENABLE) && i > 0 ; --i) {
 951                 mdelay(1);
 952                 val = jread32(jme, JME_RXCS);
 953                 rmb();
 954         }
 955
 956         if (!i)
 957                 pr_err("Disable RX engine timeout\n");
 958
 959         /*
 960          * Stop clock for RX MAC Processor
 961          */
 962         jme_mac_rxclk_off(jme);
 963 }
 964
 965 static u16
 966 jme_udpsum(struct sk_buff *skb)
 967 {
 968         u16 csum = 0xFFFFu;
 969
 970         if (skb->len < (ETH_HLEN + sizeof(struct iphdr)))
 971                 return csum;
 972         if (skb->protocol != htons(ETH_P_IP))
 973                 return csum;
 974         skb_set_network_header(skb, ETH_HLEN);
 975         if ((ip_hdr(skb)->protocol != IPPROTO_UDP) ||
 976             (skb->len < (ETH_HLEN +
 977                         (ip_hdr(skb)->ihl << 2) +
 978                         sizeof(struct udphdr)))) {
 979                 skb_reset_network_header(skb);
 980                 return csum;
 981         }
 982         skb_set_transport_header(skb,
 983                         ETH_HLEN + (ip_hdr(skb)->ihl << 2));
 984         csum = udp_hdr(skb)->check;
 985         skb_reset_transport_header(skb);
 986         skb_reset_network_header(skb);
 987
 988         return csum;
 989 }
 990
 991 static int
 992 jme_rxsum_ok(struct jme_adapter *jme, u16 flags, struct sk_buff *skb)
 993 {
 994         if (!(flags & (RXWBFLAG_TCPON | RXWBFLAG_UDPON | RXWBFLAG_IPV4)))
 995                 return false;
 996
 997         if (unlikely((flags & (RXWBFLAG_MF | RXWBFLAG_TCPON | RXWBFLAG_TCPCS))
 998                         == RXWBFLAG_TCPON)) {
 999                 if (flags & RXWBFLAG_IPV4)
1000                         netif_err(jme, rx_err, jme->dev, "TCP Checksum error\n");
1001                 return false;
1002         }
1003
1004         if (unlikely((flags & (RXWBFLAG_MF | RXWBFLAG_UDPON | RXWBFLAG_UDPCS))
1005                         == RXWBFLAG_UDPON) && jme_udpsum(skb)) {
1006                 if (flags & RXWBFLAG_IPV4)
1007                         netif_err(jme, rx_err, jme->dev, "UDP Checksum error\n");
1008                 return false;
1009         }
1010
1011         if (unlikely((flags & (RXWBFLAG_IPV4 | RXWBFLAG_IPCS))
1012                         == RXWBFLAG_IPV4)) {
1013                 netif_err(jme, rx_err, jme->dev, "IPv4 Checksum error\n");
1014                 return false;
1015         }
1016
1017         return true;
1018 }
1019
1020 static void
1021 jme_alloc_and_feed_skb(struct jme_adapter *jme, int idx)
1022 {
1023         struct jme_ring *rxring = &(jme->rxring[0]);
1024         struct rxdesc *rxdesc = rxring->desc;
1025         struct jme_buffer_info *rxbi = rxring->bufinf;
1026         struct sk_buff *skb;
1027         int framesize;
1028
1029         rxdesc += idx;
1030         rxbi += idx;
1031
1032         skb = rxbi->skb;
1033         pci_dma_sync_single_for_cpu(jme->pdev,
1034                                         rxbi->mapping,
1035                                         rxbi->len,
1036                                         PCI_DMA_FROMDEVICE);
1037
1038         if (unlikely(jme_make_new_rx_buf(jme, idx))) {
1039                 pci_dma_sync_single_for_device(jme->pdev,
1040                                                 rxbi->mapping,
1041                                                 rxbi->len,
1042                                                 PCI_DMA_FROMDEVICE);
1043
1044                 ++(NET_STAT(jme).rx_dropped);
1045         } else {
1046                 framesize = le16_to_cpu(rxdesc->descwb.framesize)
1047                                 - RX_PREPAD_SIZE;
1048
1049                 skb_reserve(skb, RX_PREPAD_SIZE);
1050                 skb_put(skb, framesize);
1051                 skb->protocol = eth_type_trans(skb, jme->dev);
1052
1053                 if (jme_rxsum_ok(jme, le16_to_cpu(rxdesc->descwb.flags), skb))
1054                         skb->ip_summed = CHECKSUM_UNNECESSARY;
1055                 else
1056                         skb_checksum_none_assert(skb);
1057
1058                 if (rxdesc->descwb.flags & cpu_to_le16(RXWBFLAG_TAGON)) {
1059                         u16 vid = le16_to_cpu(rxdesc->descwb.vlan);
1060
1061                         __vlan_hwaccel_put_tag(skb, vid);
1062                         NET_STAT(jme).rx_bytes += 4;
1063                 }
1064                 jme->jme_rx(skb);
1065
1066                 if ((rxdesc->descwb.flags & cpu_to_le16(RXWBFLAG_DEST)) ==
1067                     cpu_to_le16(RXWBFLAG_DEST_MUL))
1068                         ++(NET_STAT(jme).multicast);
1069
1070                 NET_STAT(jme).rx_bytes += framesize;
1071                 ++(NET_STAT(jme).rx_packets);
1072         }
1073
1074         jme_set_clean_rxdesc(jme, idx);
1075
1076 }
1077
1078 static int
1079 jme_process_receive(struct jme_adapter *jme, int limit)
1080 {
1081         struct jme_ring *rxring = &(jme->rxring[0]);
1082         struct rxdesc *rxdesc = rxring->desc;
1083         int i, j, ccnt, desccnt, mask = jme->rx_ring_mask;
1084
1085         if (unlikely(!atomic_dec_and_test(&jme->rx_cleaning)))
1086                 goto out_inc;
1087
1088         if (unlikely(atomic_read(&jme->link_changing) != 1))
1089                 goto out_inc;
1090
1091         if (unlikely(!netif_carrier_ok(jme->dev)))
1092                 goto out_inc;
1093
1094         i = atomic_read(&rxring->next_to_clean);
1095         while (limit > 0) {
1096                 rxdesc = rxring->desc;
1097                 rxdesc += i;
1098
1099                 if ((rxdesc->descwb.flags & cpu_to_le16(RXWBFLAG_OWN)) ||
1100                 !(rxdesc->descwb.desccnt & RXWBDCNT_WBCPL))
1101                         goto out;
1102                 --limit;
1103
1104                 rmb();
1105                 desccnt = rxdesc->descwb.desccnt & RXWBDCNT_DCNT;
1106
1107                 if (unlikely(desccnt > 1 ||
1108                 rxdesc->descwb.errstat & RXWBERR_ALLERR)) {
1109
1110                         if (rxdesc->descwb.errstat & RXWBERR_CRCERR)
1111                                 ++(NET_STAT(jme).rx_crc_errors);
1112                         else if (rxdesc->descwb.errstat & RXWBERR_OVERUN)
1113                                 ++(NET_STAT(jme).rx_fifo_errors);
1114                         else
1115                                 ++(NET_STAT(jme).rx_errors);
1116
1117                         if (desccnt > 1)
1118                                 limit -= desccnt - 1;
1119
1120                         for (j = i, ccnt = desccnt ; ccnt-- ; ) {
1121                                 jme_set_clean_rxdesc(jme, j);
1122                                 j = (j + 1) & (mask);
1123                         }
1124
1125                 } else {
1126                         jme_alloc_and_feed_skb(jme, i);
1127                 }
1128
1129                 i = (i + desccnt) & (mask);
1130         }
1131
1132 out:
1133         atomic_set(&rxring->next_to_clean, i);
1134
1135 out_inc:
1136         atomic_inc(&jme->rx_cleaning);
1137
1138         return limit > 0 ? limit : 0;
1139
1140 }
1141
1142 static void
1143 jme_attempt_pcc(struct dynpcc_info *dpi, int atmp)
1144 {
1145         if (likely(atmp == dpi->cur)) {
1146                 dpi->cnt = 0;
1147                 return;
1148         }
1149
1150         if (dpi->attempt == atmp) {
1151                 ++(dpi->cnt);
1152         } else {
1153                 dpi->attempt = atmp;
1154                 dpi->cnt = 0;
1155         }
1156
1157 }
1158
1159 static void
1160 jme_dynamic_pcc(struct jme_adapter *jme)
1161 {
1162         register struct dynpcc_info *dpi = &(jme->dpi);
1163
1164         if ((NET_STAT(jme).rx_bytes - dpi->last_bytes) > PCC_P3_THRESHOLD)
1165                 jme_attempt_pcc(dpi, PCC_P3);
1166         else if ((NET_STAT(jme).rx_packets - dpi->last_pkts) > PCC_P2_THRESHOLD ||
1167                  dpi->intr_cnt > PCC_INTR_THRESHOLD)
1168                 jme_attempt_pcc(dpi, PCC_P2);
1169         else
1170                 jme_attempt_pcc(dpi, PCC_P1);
1171
1172         if (unlikely(dpi->attempt != dpi->cur && dpi->cnt > 5)) {
1173                 if (dpi->attempt < dpi->cur)
1174                         tasklet_schedule(&jme->rxclean_task);
1175                 jme_set_rx_pcc(jme, dpi->attempt);
1176                 dpi->cur = dpi->attempt;
1177                 dpi->cnt = 0;
1178         }
1179 }
1180
1181 static void
1182 jme_start_pcc_timer(struct jme_adapter *jme)
1183 {
1184         struct dynpcc_info *dpi = &(jme->dpi);
1185         dpi->last_bytes         = NET_STAT(jme).rx_bytes;
1186         dpi->last_pkts          = NET_STAT(jme).rx_packets;
1187         dpi->intr_cnt           = 0;
1188         jwrite32(jme, JME_TMCSR,
1189                 TMCSR_EN | ((0xFFFFFF - PCC_INTERVAL_US) & TMCSR_CNT));
1190 }
1191
1192 static inline void
1193 jme_stop_pcc_timer(struct jme_adapter *jme)
1194 {
1195         jwrite32(jme, JME_TMCSR, 0);
1196 }
1197
1198 static void
1199 jme_shutdown_nic(struct jme_adapter *jme)
1200 {
1201         u32 phylink;
1202
1203         phylink = jme_linkstat_from_phy(jme);
1204
1205         if (!(phylink & PHY_LINK_UP)) {
1206                 /*
1207                  * Disable all interrupt before issue timer
1208                  */
1209                 jme_stop_irq(jme);
1210                 jwrite32(jme, JME_TIMER2, TMCSR_EN | 0xFFFFFE);
1211         }
1212 }
1213
1214 static void
1215 jme_pcc_tasklet(unsigned long arg)
1216 {
1217         struct jme_adapter *jme = (struct jme_adapter *)arg;
1218         struct net_device *netdev = jme->dev;
1219
1220         if (unlikely(test_bit(JME_FLAG_SHUTDOWN, &jme->flags))) {
1221                 jme_shutdown_nic(jme);
1222                 return;
1223         }
1224
1225         if (unlikely(!netif_carrier_ok(netdev) ||
1226                 (atomic_read(&jme->link_changing) != 1)
1227         )) {
1228                 jme_stop_pcc_timer(jme);
1229                 return;
1230         }
1231
1232         if (!(test_bit(JME_FLAG_POLL, &jme->flags)))
1233                 jme_dynamic_pcc(jme);
1234
1235         jme_start_pcc_timer(jme);
1236 }
1237
1238 static inline void
1239 jme_polling_mode(struct jme_adapter *jme)
1240 {
1241         jme_set_rx_pcc(jme, PCC_OFF);
1242 }
1243
1244 static inline void
1245 jme_interrupt_mode(struct jme_adapter *jme)
1246 {
1247         jme_set_rx_pcc(jme, PCC_P1);
1248 }
1249
1250 static inline int
1251 jme_pseudo_hotplug_enabled(struct jme_adapter *jme)
1252 {
1253         u32 apmc;
1254         apmc = jread32(jme, JME_APMC);
1255         return apmc & JME_APMC_PSEUDO_HP_EN;
1256 }
1257
1258 static void
1259 jme_start_shutdown_timer(struct jme_adapter *jme)
1260 {
1261         u32 apmc;
1262
1263         apmc = jread32(jme, JME_APMC) | JME_APMC_PCIE_SD_EN;
1264         apmc &= ~JME_APMC_EPIEN_CTRL;
1265         if (!no_extplug) {
1266                 jwrite32f(jme, JME_APMC, apmc | JME_APMC_EPIEN_CTRL_EN);
1267                 wmb();
1268         }
1269         jwrite32f(jme, JME_APMC, apmc);
1270
1271         jwrite32f(jme, JME_TIMER2, 0);
1272         set_bit(JME_FLAG_SHUTDOWN, &jme->flags);
1273         jwrite32(jme, JME_TMCSR,
1274                 TMCSR_EN | ((0xFFFFFF - APMC_PHP_SHUTDOWN_DELAY) & TMCSR_CNT));
1275 }
1276
1277 static void
1278 jme_stop_shutdown_timer(struct jme_adapter *jme)
1279 {
1280         u32 apmc;
1281
1282         jwrite32f(jme, JME_TMCSR, 0);
1283         jwrite32f(jme, JME_TIMER2, 0);
1284         clear_bit(JME_FLAG_SHUTDOWN, &jme->flags);
1285
1286         apmc = jread32(jme, JME_APMC);
1287         apmc &= ~(JME_APMC_PCIE_SD_EN | JME_APMC_EPIEN_CTRL);
1288         jwrite32f(jme, JME_APMC, apmc | JME_APMC_EPIEN_CTRL_DIS);
1289         wmb();
1290         jwrite32f(jme, JME_APMC, apmc);
1291 }
1292
1293 static void
1294 jme_link_change_tasklet(unsigned long arg)
1295 {
1296         struct jme_adapter *jme = (struct jme_adapter *)arg;
1297         struct net_device *netdev = jme->dev;
1298         int rc;
1299
1300         while (!atomic_dec_and_test(&jme->link_changing)) {
1301                 atomic_inc(&jme->link_changing);
1302                 netif_info(jme, intr, jme->dev, "Get link change lock failed\n");
1303                 while (atomic_read(&jme->link_changing) != 1)
1304                         netif_info(jme, intr, jme->dev, "Waiting link change lock\n");
1305         }
1306
1307         if (jme_check_link(netdev, 1) && jme->old_mtu == netdev->mtu)
1308                 goto out;
1309
1310         jme->old_mtu = netdev->mtu;
1311         netif_stop_queue(netdev);
1312         if (jme_pseudo_hotplug_enabled(jme))
1313                 jme_stop_shutdown_timer(jme);
1314
1315         jme_stop_pcc_timer(jme);
1316         tasklet_disable(&jme->txclean_task);
1317         tasklet_disable(&jme->rxclean_task);
1318         tasklet_disable(&jme->rxempty_task);
1319
1320         if (netif_carrier_ok(netdev)) {
1321                 jme_disable_rx_engine(jme);
1322                 jme_disable_tx_engine(jme);
1323                 jme_reset_mac_processor(jme);
1324                 jme_free_rx_resources(jme);
1325                 jme_free_tx_resources(jme);
1326
1327                 if (test_bit(JME_FLAG_POLL, &jme->flags))
1328                         jme_polling_mode(jme);
1329
1330                 netif_carrier_off(netdev);
1331         }
1332
1333         jme_check_link(netdev, 0);
1334         if (netif_carrier_ok(netdev)) {
1335                 rc = jme_setup_rx_resources(jme);
1336                 if (rc) {
1337                         pr_err("Allocating resources for RX error, Device STOPPED!\n");
1338                         goto out_enable_tasklet;
1339                 }
1340
1341                 rc = jme_setup_tx_resources(jme);
1342                 if (rc) {
1343                         pr_err("Allocating resources for TX error, Device STOPPED!\n");
1344                         goto err_out_free_rx_resources;
1345                 }
1346
1347                 jme_enable_rx_engine(jme);
1348                 jme_enable_tx_engine(jme);
1349
1350                 netif_start_queue(netdev);
1351
1352                 if (test_bit(JME_FLAG_POLL, &jme->flags))
1353                         jme_interrupt_mode(jme);
1354
1355                 jme_start_pcc_timer(jme);
1356         } else if (jme_pseudo_hotplug_enabled(jme)) {
1357                 jme_start_shutdown_timer(jme);
1358         }
1359
1360         goto out_enable_tasklet;
1361
1362 err_out_free_rx_resources:
1363         jme_free_rx_resources(jme);
1364 out_enable_tasklet:
1365         tasklet_enable(&jme->txclean_task);
1366         tasklet_hi_enable(&jme->rxclean_task);
1367         tasklet_hi_enable(&jme->rxempty_task);
1368 out:
1369         atomic_inc(&jme->link_changing);
1370 }
1371
1372 static void
1373 jme_rx_clean_tasklet(unsigned long arg)
1374 {
1375         struct jme_adapter *jme = (struct jme_adapter *)arg;
1376         struct dynpcc_info *dpi = &(jme->dpi);
1377
1378         jme_process_receive(jme, jme->rx_ring_size);
1379         ++(dpi->intr_cnt);
1380
1381 }
1382
1383 static int
1384 jme_poll(JME_NAPI_HOLDER(holder), JME_NAPI_WEIGHT(budget))
1385 {
1386         struct jme_adapter *jme = jme_napi_priv(holder);
1387         int rest;
1388
1389         rest = jme_process_receive(jme, JME_NAPI_WEIGHT_VAL(budget));
1390
1391         while (atomic_read(&jme->rx_empty) > 0) {
1392                 atomic_dec(&jme->rx_empty);
1393                 ++(NET_STAT(jme).rx_dropped);
1394                 jme_restart_rx_engine(jme);
1395         }
1396         atomic_inc(&jme->rx_empty);
1397
1398         if (rest) {
1399                 JME_RX_COMPLETE(netdev, holder);
1400                 jme_interrupt_mode(jme);
1401         }
1402
1403         JME_NAPI_WEIGHT_SET(budget, rest);
1404         return JME_NAPI_WEIGHT_VAL(budget) - rest;
1405 }
1406
1407 static void
1408 jme_rx_empty_tasklet(unsigned long arg)
1409 {
1410         struct jme_adapter *jme = (struct jme_adapter *)arg;
1411
1412         if (unlikely(atomic_read(&jme->link_changing) != 1))
1413                 return;
1414
1415         if (unlikely(!netif_carrier_ok(jme->dev)))
1416                 return;
1417
1418         netif_info(jme, rx_status, jme->dev, "RX Queue Full!\n");
1419
1420         jme_rx_clean_tasklet(arg);
1421
1422         while (atomic_read(&jme->rx_empty) > 0) {
1423                 atomic_dec(&jme->rx_empty);
1424                 ++(NET_STAT(jme).rx_dropped);
1425                 jme_restart_rx_engine(jme);
1426         }
1427         atomic_inc(&jme->rx_empty);
1428 }
1429
1430 static void
1431 jme_wake_queue_if_stopped(struct jme_adapter *jme)
1432 {
1433         struct jme_ring *txring = &(jme->txring[0]);
1434
1435         smp_wmb();
1436         if (unlikely(netif_queue_stopped(jme->dev) &&
1437         atomic_read(&txring->nr_free) >= (jme->tx_wake_threshold))) {
1438                 netif_info(jme, tx_done, jme->dev, "TX Queue Waked\n");
1439                 netif_wake_queue(jme->dev);
1440         }
1441
1442 }
1443
1444 static void
1445 jme_tx_clean_tasklet(unsigned long arg)
1446 {
1447         struct jme_adapter *jme = (struct jme_adapter *)arg;
1448         struct jme_ring *txring = &(jme->txring[0]);
1449         struct txdesc *txdesc = txring->desc;
1450         struct jme_buffer_info *txbi = txring->bufinf, *ctxbi, *ttxbi;
1451         int i, j, cnt = 0, max, err, mask;
1452
1453         tx_dbg(jme, "Into txclean\n");
1454
1455         if (unlikely(!atomic_dec_and_test(&jme->tx_cleaning)))
1456                 goto out;
1457
1458         if (unlikely(atomic_read(&jme->link_changing) != 1))
1459                 goto out;
1460
1461         if (unlikely(!netif_carrier_ok(jme->dev)))
1462                 goto out;
1463
1464         max = jme->tx_ring_size - atomic_read(&txring->nr_free);
1465         mask = jme->tx_ring_mask;
1466
1467         for (i = atomic_read(&txring->next_to_clean) ; cnt < max ; ) {
1468
1469                 ctxbi = txbi + i;
1470
1471                 if (likely(ctxbi->skb &&
1472                 !(txdesc[i].descwb.flags & TXWBFLAG_OWN))) {
1473
1474                         tx_dbg(jme, "txclean: %d+%d@%lu\n",
1475                                i, ctxbi->nr_desc, jiffies);
1476
1477                         err = txdesc[i].descwb.flags & TXWBFLAG_ALLERR;
1478
1479                         for (j = 1 ; j < ctxbi->nr_desc ; ++j) {
1480                                 ttxbi = txbi + ((i + j) & (mask));
1481                                 txdesc[(i + j) & (mask)].dw[0] = 0;
1482
1483                                 pci_unmap_page(jme->pdev,
1484                                                  ttxbi->mapping,
1485                                                  ttxbi->len,
1486                                                  PCI_DMA_TODEVICE);
1487
1488                                 ttxbi->mapping = 0;
1489                                 ttxbi->len = 0;
1490                         }
1491
1492                         dev_kfree_skb(ctxbi->skb);
1493
1494                         cnt += ctxbi->nr_desc;
1495
1496                         if (unlikely(err)) {
1497                                 ++(NET_STAT(jme).tx_carrier_errors);
1498                         } else {
1499                                 ++(NET_STAT(jme).tx_packets);
1500                                 NET_STAT(jme).tx_bytes += ctxbi->len;
1501                         }
1502
1503                         ctxbi->skb = NULL;
1504                         ctxbi->len = 0;
1505                         ctxbi->start_xmit = 0;
1506
1507                 } else {
1508                         break;
1509                 }
1510
1511                 i = (i + ctxbi->nr_desc) & mask;
1512
1513                 ctxbi->nr_desc = 0;
1514         }
1515
1516         tx_dbg(jme, "txclean: done %d@%lu\n", i, jiffies);
1517         atomic_set(&txring->next_to_clean, i);
1518         atomic_add(cnt, &txring->nr_free);
1519
1520         jme_wake_queue_if_stopped(jme);
1521
1522 out:
1523         atomic_inc(&jme->tx_cleaning);
1524 }
1525
1526 static void
1527 jme_intr_msi(struct jme_adapter *jme, u32 intrstat)
1528 {
1529         /*
1530          * Disable interrupt
1531          */
1532         jwrite32f(jme, JME_IENC, INTR_ENABLE);
1533
1534         if (intrstat & (INTR_LINKCH | INTR_SWINTR)) {
1535                 /*
1536                  * Link change event is critical
1537                  * all other events are ignored
1538                  */
1539                 jwrite32(jme, JME_IEVE, intrstat);
1540                 tasklet_schedule(&jme->linkch_task);
1541                 goto out_reenable;
1542         }
1543
1544         if (intrstat & INTR_TMINTR) {
1545                 jwrite32(jme, JME_IEVE, INTR_TMINTR);
1546                 tasklet_schedule(&jme->pcc_task);
1547         }
1548
1549         if (intrstat & (INTR_PCCTXTO | INTR_PCCTX)) {
1550                 jwrite32(jme, JME_IEVE, INTR_PCCTXTO | INTR_PCCTX | INTR_TX0);
1551                 tasklet_schedule(&jme->txclean_task);
1552         }
1553
1554         if ((intrstat & (INTR_PCCRX0TO | INTR_PCCRX0 | INTR_RX0EMP))) {
1555                 jwrite32(jme, JME_IEVE, (intrstat & (INTR_PCCRX0TO |
1556                                                      INTR_PCCRX0 |
1557                                                      INTR_RX0EMP)) |
1558                                         INTR_RX0);
1559         }
1560
1561         if (test_bit(JME_FLAG_POLL, &jme->flags)) {
1562                 if (intrstat & INTR_RX0EMP)
1563                         atomic_inc(&jme->rx_empty);
1564
1565                 if ((intrstat & (INTR_PCCRX0TO | INTR_PCCRX0 | INTR_RX0EMP))) {
1566                         if (likely(JME_RX_SCHEDULE_PREP(jme))) {
1567                                 jme_polling_mode(jme);
1568                                 JME_RX_SCHEDULE(jme);
1569                         }
1570                 }
1571         } else {
1572                 if (intrstat & INTR_RX0EMP) {
1573                         atomic_inc(&jme->rx_empty);
1574                         tasklet_hi_schedule(&jme->rxempty_task);
1575                 } else if (intrstat & (INTR_PCCRX0TO | INTR_PCCRX0)) {
1576                         tasklet_hi_schedule(&jme->rxclean_task);
1577                 }
1578         }
1579
1580 out_reenable:
1581         /*
1582          * Re-enable interrupt
1583          */
1584         jwrite32f(jme, JME_IENS, INTR_ENABLE);
1585 }
1586
1587 static irqreturn_t
1588 jme_intr(int irq, void *dev_id)
1589 {
1590         struct net_device *netdev = dev_id;
1591         struct jme_adapter *jme = netdev_priv(netdev);
1592         u32 intrstat;
1593
1594         intrstat = jread32(jme, JME_IEVE);
1595
1596         /*
1597          * Check if it's really an interrupt for us
1598          */
1599         if (unlikely((intrstat & INTR_ENABLE) == 0))
1600                 return IRQ_NONE;
1601
1602         /*
1603          * Check if the device still exist
1604          */
1605         if (unlikely(intrstat == ~((typeof(intrstat))0)))
1606                 return IRQ_NONE;
1607
1608         jme_intr_msi(jme, intrstat);
1609
1610         return IRQ_HANDLED;
1611 }
1612
1613 static irqreturn_t
1614 jme_msi(int irq, void *dev_id)
1615 {
1616         struct net_device *netdev = dev_id;
1617         struct jme_adapter *jme = netdev_priv(netdev);
1618         u32 intrstat;
1619
1620         intrstat = jread32(jme, JME_IEVE);
1621
1622         jme_intr_msi(jme, intrstat);
1623
1624         return IRQ_HANDLED;
1625 }
1626
1627 static void
1628 jme_reset_link(struct jme_adapter *jme)
1629 {
1630         jwrite32(jme, JME_TMCSR, TMCSR_SWIT);
1631 }
1632
1633 static void
1634 jme_restart_an(struct jme_adapter *jme)
1635 {
1636         u32 bmcr;
1637
1638         spin_lock_bh(&jme->phy_lock);
1639         bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
1640         bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
1641         jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, bmcr);
1642         spin_unlock_bh(&jme->phy_lock);
1643 }
1644
1645 static int
1646 jme_request_irq(struct jme_adapter *jme)
1647 {
1648         int rc;
1649         struct net_device *netdev = jme->dev;
1650         irq_handler_t handler = jme_intr;
1651         int irq_flags = IRQF_SHARED;
1652
1653         if (!pci_enable_msi(jme->pdev)) {
1654                 set_bit(JME_FLAG_MSI, &jme->flags);
1655                 handler = jme_msi;
1656                 irq_flags = 0;
1657         }
1658
1659         rc = request_irq(jme->pdev->irq, handler, irq_flags, netdev->name,
1660                           netdev);
1661         if (rc) {
1662                 netdev_err(netdev,
1663                            "Unable to request %s interrupt (return: %d)\n",
1664                            test_bit(JME_FLAG_MSI, &jme->flags) ? "MSI" : "INTx",
1665                            rc);
1666
1667                 if (test_bit(JME_FLAG_MSI, &jme->flags)) {
1668                         pci_disable_msi(jme->pdev);
1669                         clear_bit(JME_FLAG_MSI, &jme->flags);
1670                 }
1671         } else {
1672                 netdev->irq = jme->pdev->irq;
1673         }
1674
1675         return rc;
1676 }
1677
1678 static void
1679 jme_free_irq(struct jme_adapter *jme)
1680 {
1681         free_irq(jme->pdev->irq, jme->dev);
1682         if (test_bit(JME_FLAG_MSI, &jme->flags)) {
1683                 pci_disable_msi(jme->pdev);
1684                 clear_bit(JME_FLAG_MSI, &jme->flags);
1685                 jme->dev->irq = jme->pdev->irq;
1686         }
1687 }
1688
1689 static inline void
1690 jme_new_phy_on(struct jme_adapter *jme)
1691 {
1692         u32 reg;
1693
1694         reg = jread32(jme, JME_PHY_PWR);
1695         reg &= ~(PHY_PWR_DWN1SEL | PHY_PWR_DWN1SW |
1696                  PHY_PWR_DWN2 | PHY_PWR_CLKSEL);
1697         jwrite32(jme, JME_PHY_PWR, reg);
1698
1699         pci_read_config_dword(jme->pdev, PCI_PRIV_PE1, &reg);
1700         reg &= ~PE1_GPREG0_PBG;
1701         reg |= PE1_GPREG0_ENBG;
1702         pci_write_config_dword(jme->pdev, PCI_PRIV_PE1, reg);
1703 }
1704
1705 static inline void
1706 jme_new_phy_off(struct jme_adapter *jme)
1707 {
1708         u32 reg;
1709
1710         reg = jread32(jme, JME_PHY_PWR);
1711         reg |= PHY_PWR_DWN1SEL | PHY_PWR_DWN1SW |
1712                PHY_PWR_DWN2 | PHY_PWR_CLKSEL;
1713         jwrite32(jme, JME_PHY_PWR, reg);
1714
1715         pci_read_config_dword(jme->pdev, PCI_PRIV_PE1, &reg);
1716         reg &= ~PE1_GPREG0_PBG;
1717         reg |= PE1_GPREG0_PDD3COLD;
1718         pci_write_config_dword(jme->pdev, PCI_PRIV_PE1, reg);
1719 }
1720
1721 static inline void
1722 jme_phy_on(struct jme_adapter *jme)
1723 {
1724         u32 bmcr;
1725
1726         bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
1727         bmcr &= ~BMCR_PDOWN;
1728         jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, bmcr);
1729
1730         if (new_phy_power_ctrl(jme->chip_main_rev))
1731                 jme_new_phy_on(jme);
1732 }
1733
1734 static inline void
1735 jme_phy_off(struct jme_adapter *jme)
1736 {
1737         u32 bmcr;
1738
1739         bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
1740         bmcr |= BMCR_PDOWN;
1741         jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, bmcr);
1742
1743         if (new_phy_power_ctrl(jme->chip_main_rev))
1744                 jme_new_phy_off(jme);
1745 }
1746
1747 static int
1748 jme_phy_specreg_read(struct jme_adapter *jme, u32 specreg)
1749 {
1750         u32 phy_addr;
1751
1752         phy_addr = JM_PHY_SPEC_REG_READ | specreg;
1753         jme_mdio_write(jme->dev, jme->mii_if.phy_id, JM_PHY_SPEC_ADDR_REG,
1754                         phy_addr);
1755         return jme_mdio_read(jme->dev, jme->mii_if.phy_id,
1756                         JM_PHY_SPEC_DATA_REG);
1757 }
1758
1759 static void
1760 jme_phy_specreg_write(struct jme_adapter *jme, u32 ext_reg, u32 phy_data)
1761 {
1762         u32 phy_addr;
1763
1764         phy_addr = JM_PHY_SPEC_REG_WRITE | ext_reg;
1765         jme_mdio_write(jme->dev, jme->mii_if.phy_id, JM_PHY_SPEC_DATA_REG,
1766                         phy_data);
1767         jme_mdio_write(jme->dev, jme->mii_if.phy_id, JM_PHY_SPEC_ADDR_REG,
1768                         phy_addr);
1769 }
1770
1771 static int
1772 jme_phy_calibration(struct jme_adapter *jme)
1773 {
1774         u32 ctrl1000, phy_data;
1775
1776         jme_phy_off(jme);
1777         jme_phy_on(jme);
1778         /*  Enabel PHY test mode 1 */
1779         ctrl1000 = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_CTRL1000);
1780         ctrl1000 &= ~PHY_GAD_TEST_MODE_MSK;
1781         ctrl1000 |= PHY_GAD_TEST_MODE_1;
1782         jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_CTRL1000, ctrl1000);
1783
1784         phy_data = jme_phy_specreg_read(jme, JM_PHY_EXT_COMM_2_REG);
1785         phy_data &= ~JM_PHY_EXT_COMM_2_CALI_MODE_0;
1786         phy_data |= JM_PHY_EXT_COMM_2_CALI_LATCH |
1787                         JM_PHY_EXT_COMM_2_CALI_ENABLE;
1788         jme_phy_specreg_write(jme, JM_PHY_EXT_COMM_2_REG, phy_data);
1789         msleep(20);
1790         phy_data = jme_phy_specreg_read(jme, JM_PHY_EXT_COMM_2_REG);
1791         phy_data &= ~(JM_PHY_EXT_COMM_2_CALI_ENABLE |
1792                         JM_PHY_EXT_COMM_2_CALI_MODE_0 |
1793                         JM_PHY_EXT_COMM_2_CALI_LATCH);
1794         jme_phy_specreg_write(jme, JM_PHY_EXT_COMM_2_REG, phy_data);
1795
1796         /*  Disable PHY test mode */
1797         ctrl1000 = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_CTRL1000);
1798         ctrl1000 &= ~PHY_GAD_TEST_MODE_MSK;
1799         jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_CTRL1000, ctrl1000);
1800         return 0;
1801 }
1802
1803 static int
1804 jme_phy_setEA(struct jme_adapter *jme)
1805 {
1806         u32 phy_comm0 = 0, phy_comm1 = 0;
1807         u8 nic_ctrl;
1808
1809         pci_read_config_byte(jme->pdev, PCI_PRIV_SHARE_NICCTRL, &nic_ctrl);
1810         if ((nic_ctrl & 0x3) == JME_FLAG_PHYEA_ENABLE)
1811                 return 0;
1812
1813         switch (jme->pdev->device) {
1814         case PCI_DEVICE_ID_JMICRON_JMC250:
1815                 if (((jme->chip_main_rev == 5) &&
1816                         ((jme->chip_sub_rev == 0) || (jme->chip_sub_rev == 1) ||
1817                         (jme->chip_sub_rev == 3))) ||
1818                         (jme->chip_main_rev >= 6)) {
1819                         phy_comm0 = 0x008A;
1820                         phy_comm1 = 0x4109;
1821                 }
1822                 if ((jme->chip_main_rev == 3) &&
1823                         ((jme->chip_sub_rev == 1) || (jme->chip_sub_rev == 2)))
1824                         phy_comm0 = 0xE088;
1825                 break;
1826         case PCI_DEVICE_ID_JMICRON_JMC260:
1827                 if (((jme->chip_main_rev == 5) &&
1828                         ((jme->chip_sub_rev == 0) || (jme->chip_sub_rev == 1) ||
1829                         (jme->chip_sub_rev == 3))) ||
1830                         (jme->chip_main_rev >= 6)) {
1831                         phy_comm0 = 0x008A;
1832                         phy_comm1 = 0x4109;
1833                 }
1834                 if ((jme->chip_main_rev == 3) &&
1835                         ((jme->chip_sub_rev == 1) || (jme->chip_sub_rev == 2)))
1836                         phy_comm0 = 0xE088;
1837                 if ((jme->chip_main_rev == 2) && (jme->chip_sub_rev == 0))
1838                         phy_comm0 = 0x608A;
1839                 if ((jme->chip_main_rev == 2) && (jme->chip_sub_rev == 2))
1840                         phy_comm0 = 0x408A;
1841                 break;
1842         default:
1843                 return -ENODEV;
1844         }
1845         if (phy_comm0)
1846                 jme_phy_specreg_write(jme, JM_PHY_EXT_COMM_0_REG, phy_comm0);
1847         if (phy_comm1)
1848                 jme_phy_specreg_write(jme, JM_PHY_EXT_COMM_1_REG, phy_comm1);
1849
1850         return 0;
1851 }
1852
1853 static int
1854 jme_open(struct net_device *netdev)
1855 {
1856         struct jme_adapter *jme = netdev_priv(netdev);
1857         int rc;
1858
1859         jme_clear_pm(jme);
1860         JME_NAPI_ENABLE(jme);
1861
1862         tasklet_enable(&jme->linkch_task);
1863         tasklet_enable(&jme->txclean_task);
1864         tasklet_hi_enable(&jme->rxclean_task);
1865         tasklet_hi_enable(&jme->rxempty_task);
1866
1867         rc = jme_request_irq(jme);
1868         if (rc)
1869                 goto err_out;
1870
1871         jme_start_irq(jme);
1872
1873         jme_phy_on(jme);
1874         if (test_bit(JME_FLAG_SSET, &jme->flags))
1875                 jme_set_settings(netdev, &jme->old_ecmd);
1876         else
1877                 jme_reset_phy_processor(jme);
1878         jme_phy_calibration(jme);
1879         jme_phy_setEA(jme);
1880         jme_reset_link(jme);
1881
1882         return 0;
1883
1884 err_out:
1885         netif_stop_queue(netdev);
1886         netif_carrier_off(netdev);
1887         return rc;
1888 }
1889
1890 static void
1891 jme_set_100m_half(struct jme_adapter *jme)
1892 {
1893         u32 bmcr, tmp;
1894
1895         jme_phy_on(jme);
1896         bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
1897         tmp = bmcr & ~(BMCR_ANENABLE | BMCR_SPEED100 |
1898                        BMCR_SPEED1000 | BMCR_FULLDPLX);
1899         tmp |= BMCR_SPEED100;
1900
1901         if (bmcr != tmp)
1902                 jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, tmp);
1903
1904         if (jme->fpgaver)
1905                 jwrite32(jme, JME_GHC, GHC_SPEED_100M | GHC_LINK_POLL);
1906         else
1907                 jwrite32(jme, JME_GHC, GHC_SPEED_100M);
1908 }
1909
1910 #define JME_WAIT_LINK_TIME 2000 /* 2000ms */
1911 static void
1912 jme_wait_link(struct jme_adapter *jme)
1913 {
1914         u32 phylink, to = JME_WAIT_LINK_TIME;
1915
1916         mdelay(1000);
1917         phylink = jme_linkstat_from_phy(jme);
1918         while (!(phylink & PHY_LINK_UP) && (to -= 10) > 0) {
1919                 mdelay(10);
1920                 phylink = jme_linkstat_from_phy(jme);
1921         }
1922 }
1923
1924 static void
1925 jme_powersave_phy(struct jme_adapter *jme)
1926 {
1927         if (jme->reg_pmcs) {
1928                 jme_set_100m_half(jme);
1929                 if (jme->reg_pmcs & (PMCS_LFEN | PMCS_LREN))
1930                         jme_wait_link(jme);
1931                 jme_clear_pm(jme);
1932         } else {
1933                 jme_phy_off(jme);
1934         }
1935 }
1936
1937 static int
1938 jme_close(struct net_device *netdev)
1939 {
1940         struct jme_adapter *jme = netdev_priv(netdev);
1941
1942         netif_stop_queue(netdev);
1943         netif_carrier_off(netdev);
1944
1945         jme_stop_irq(jme);
1946         jme_free_irq(jme);
1947
1948         JME_NAPI_DISABLE(jme);
1949
1950         tasklet_disable(&jme->linkch_task);
1951         tasklet_disable(&jme->txclean_task);
1952         tasklet_disable(&jme->rxclean_task);
1953         tasklet_disable(&jme->rxempty_task);
1954
1955         jme_disable_rx_engine(jme);
1956         jme_disable_tx_engine(jme);
1957         jme_reset_mac_processor(jme);
1958         jme_free_rx_resources(jme);
1959         jme_free_tx_resources(jme);
1960         jme->phylink = 0;
1961         jme_phy_off(jme);
1962
1963         return 0;
1964 }
1965
1966 static int
1967 jme_alloc_txdesc(struct jme_adapter *jme,
1968                         struct sk_buff *skb)
1969 {
1970         struct jme_ring *txring = &(jme->txring[0]);
1971         int idx, nr_alloc, mask = jme->tx_ring_mask;
1972
1973         idx = txring->next_to_use;
1974         nr_alloc = skb_shinfo(skb)->nr_frags + 2;
1975
1976         if (unlikely(atomic_read(&txring->nr_free) < nr_alloc))
1977                 return -1;
1978
1979         atomic_sub(nr_alloc, &txring->nr_free);
1980
1981         txring->next_to_use = (txring->next_to_use + nr_alloc) & mask;
1982
1983         return idx;
1984 }
1985
1986 static void
1987 jme_fill_tx_map(struct pci_dev *pdev,
1988                 struct txdesc *txdesc,
1989                 struct jme_buffer_info *txbi,
1990                 struct page *page,
1991                 u32 page_offset,
1992                 u32 len,
1993                 bool hidma)
1994 {
1995         dma_addr_t dmaaddr;
1996
1997         dmaaddr = pci_map_page(pdev,
1998                                 page,
1999                                 page_offset,
2000                                 len,
2001                                 PCI_DMA_TODEVICE);
2002
2003         pci_dma_sync_single_for_device(pdev,
2004                                        dmaaddr,
2005                                        len,
2006                                        PCI_DMA_TODEVICE);
2007
2008         txdesc->dw[0] = 0;
2009         txdesc->dw[1] = 0;
2010         txdesc->desc2.flags     = TXFLAG_OWN;
2011         txdesc->desc2.flags     |= (hidma) ? TXFLAG_64BIT : 0;
2012         txdesc->desc2.datalen   = cpu_to_le16(len);
2013         txdesc->desc2.bufaddrh  = cpu_to_le32((__u64)dmaaddr >> 32);
2014         txdesc->desc2.bufaddrl  = cpu_to_le32(
2015                                         (__u64)dmaaddr & 0xFFFFFFFFUL);
2016
2017         txbi->mapping = dmaaddr;
2018         txbi->len = len;
2019 }
2020
2021 static void
2022 jme_map_tx_skb(struct jme_adapter *jme, struct sk_buff *skb, int idx)
2023 {
2024         struct jme_ring *txring = &(jme->txring[0]);
2025         struct txdesc *txdesc = txring->desc, *ctxdesc;
2026         struct jme_buffer_info *txbi = txring->bufinf, *ctxbi;
2027         bool hidma = jme->dev->features & NETIF_F_HIGHDMA;
2028         int i, nr_frags = skb_shinfo(skb)->nr_frags;
2029         int mask = jme->tx_ring_mask;
2030         const struct skb_frag_struct *frag;
2031         u32 len;
2032
2033         for (i = 0 ; i < nr_frags ; ++i) {
2034                 frag = &skb_shinfo(skb)->frags[i];
2035                 ctxdesc = txdesc + ((idx + i + 2) & (mask));
2036                 ctxbi = txbi + ((idx + i + 2) & (mask));
2037
2038                 jme_fill_tx_map(jme->pdev, ctxdesc, ctxbi,
2039                                 skb_frag_page(frag),
2040                                 frag->page_offset, skb_frag_size(frag), hidma);
2041         }
2042
2043         len = skb_is_nonlinear(skb) ? skb_headlen(skb) : skb->len;
2044         ctxdesc = txdesc + ((idx + 1) & (mask));
2045         ctxbi = txbi + ((idx + 1) & (mask));
2046         jme_fill_tx_map(jme->pdev, ctxdesc, ctxbi, virt_to_page(skb->data),
2047                         offset_in_page(skb->data), len, hidma);
2048
2049 }
2050
2051 static int
2052 jme_expand_header(struct jme_adapter *jme, struct sk_buff *skb)
2053 {
2054         if (unlikely(skb_shinfo(skb)->gso_size &&
2055                         skb_header_cloned(skb) &&
2056                         pskb_expand_head(skb, 0, 0, GFP_ATOMIC))) {
2057                 dev_kfree_skb(skb);
2058                 return -1;
2059         }
2060
2061         return 0;
2062 }
2063
2064 static int
2065 jme_tx_tso(struct sk_buff *skb, __le16 *mss, u8 *flags)
2066 {
2067         *mss = cpu_to_le16(skb_shinfo(skb)->gso_size << TXDESC_MSS_SHIFT);
2068         if (*mss) {
2069                 *flags |= TXFLAG_LSEN;
2070
2071                 if (skb->protocol == htons(ETH_P_IP)) {
2072                         struct iphdr *iph = ip_hdr(skb);
2073
2074                         iph->check = 0;
2075                         tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
2076                                                                 iph->daddr, 0,
2077                                                                 IPPROTO_TCP,
2078                                                                 0);
2079                 } else {
2080                         struct ipv6hdr *ip6h = ipv6_hdr(skb);
2081
2082                         tcp_hdr(skb)->check = ~csum_ipv6_magic(&ip6h->saddr,
2083                                                                 &ip6h->daddr, 0,
2084                                                                 IPPROTO_TCP,
2085                                                                 0);
2086                 }
2087
2088                 return 0;
2089         }
2090
2091         return 1;
2092 }
2093
2094 static void
2095 jme_tx_csum(struct jme_adapter *jme, struct sk_buff *skb, u8 *flags)
2096 {
2097         if (skb->ip_summed == CHECKSUM_PARTIAL) {
2098                 u8 ip_proto;
2099
2100                 switch (skb->protocol) {
2101                 case htons(ETH_P_IP):
2102                         ip_proto = ip_hdr(skb)->protocol;
2103                         break;
2104                 case htons(ETH_P_IPV6):
2105                         ip_proto = ipv6_hdr(skb)->nexthdr;
2106                         break;
2107                 default:
2108                         ip_proto = 0;
2109                         break;
2110                 }
2111
2112                 switch (ip_proto) {
2113                 case IPPROTO_TCP:
2114                         *flags |= TXFLAG_TCPCS;
2115                         break;
2116                 case IPPROTO_UDP:
2117                         *flags |= TXFLAG_UDPCS;
2118                         break;
2119                 default:
2120                         netif_err(jme, tx_err, jme->dev, "Error upper layer protocol\n");
2121                         break;
2122                 }
2123         }
2124 }
2125
2126 static inline void
2127 jme_tx_vlan(struct sk_buff *skb, __le16 *vlan, u8 *flags)
2128 {
2129         if (vlan_tx_tag_present(skb)) {
2130                 *flags |= TXFLAG_TAGON;
2131                 *vlan = cpu_to_le16(vlan_tx_tag_get(skb));
2132         }
2133 }
2134
2135 static int
2136 jme_fill_tx_desc(struct jme_adapter *jme, struct sk_buff *skb, int idx)
2137 {
2138         struct jme_ring *txring = &(jme->txring[0]);
2139         struct txdesc *txdesc;
2140         struct jme_buffer_info *txbi;
2141         u8 flags;
2142
2143         txdesc = (struct txdesc *)txring->desc + idx;
2144         txbi = txring->bufinf + idx;
2145
2146         txdesc->dw[0] = 0;
2147         txdesc->dw[1] = 0;
2148         txdesc->dw[2] = 0;
2149         txdesc->dw[3] = 0;
2150         txdesc->desc1.pktsize = cpu_to_le16(skb->len);
2151         /*
2152          * Set OWN bit at final.
2153          * When kernel transmit faster than NIC.
2154          * And NIC trying to send this descriptor before we tell
2155          * it to start sending this TX queue.
2156          * Other fields are already filled correctly.
2157          */
2158         wmb();
2159         flags = TXFLAG_OWN | TXFLAG_INT;
2160         /*
2161          * Set checksum flags while not tso
2162          */
2163         if (jme_tx_tso(skb, &txdesc->desc1.mss, &flags))
2164                 jme_tx_csum(jme, skb, &flags);
2165         jme_tx_vlan(skb, &txdesc->desc1.vlan, &flags);
2166         jme_map_tx_skb(jme, skb, idx);
2167         txdesc->desc1.flags = flags;
2168         /*
2169          * Set tx buffer info after telling NIC to send
2170          * For better tx_clean timing
2171          */
2172         wmb();
2173         txbi->nr_desc = skb_shinfo(skb)->nr_frags + 2;
2174         txbi->skb = skb;
2175         txbi->len = skb->len;
2176         txbi->start_xmit = jiffies;
2177         if (!txbi->start_xmit)
2178                 txbi->start_xmit = (0UL-1);
2179
2180         return 0;
2181 }
2182
2183 static void
2184 jme_stop_queue_if_full(struct jme_adapter *jme)
2185 {
2186         struct jme_ring *txring = &(jme->txring[0]);
2187         struct jme_buffer_info *txbi = txring->bufinf;
2188         int idx = atomic_read(&txring->next_to_clean);
2189
2190         txbi += idx;
2191
2192         smp_wmb();
2193         if (unlikely(atomic_read(&txring->nr_free) < (MAX_SKB_FRAGS+2))) {
2194                 netif_stop_queue(jme->dev);
2195                 netif_info(jme, tx_queued, jme->dev, "TX Queue Paused\n");
2196                 smp_wmb();
2197                 if (atomic_read(&txring->nr_free)
2198                         >= (jme->tx_wake_threshold)) {
2199                         netif_wake_queue(jme->dev);
2200                         netif_info(jme, tx_queued, jme->dev, "TX Queue Fast Waked\n");
2201                 }
2202         }
2203
2204         if (unlikely(txbi->start_xmit &&
2205                         (jiffies - txbi->start_xmit) >= TX_TIMEOUT &&
2206                         txbi->skb)) {
2207                 netif_stop_queue(jme->dev);
2208                 netif_info(jme, tx_queued, jme->dev,
2209                            "TX Queue Stopped %d@%lu\n", idx, jiffies);
2210         }
2211 }
2212
2213 /*
2214  * This function is already protected by netif_tx_lock()
2215  */
2216
2217 static netdev_tx_t
2218 jme_start_xmit(struct sk_buff *skb, struct net_device *netdev)
2219 {
2220         struct jme_adapter *jme = netdev_priv(netdev);
2221         int idx;
2222
2223         if (unlikely(jme_expand_header(jme, skb))) {
2224                 ++(NET_STAT(jme).tx_dropped);
2225                 return NETDEV_TX_OK;
2226         }
2227
2228         idx = jme_alloc_txdesc(jme, skb);
2229
2230         if (unlikely(idx < 0)) {
2231                 netif_stop_queue(netdev);
2232                 netif_err(jme, tx_err, jme->dev,
2233                           "BUG! Tx ring full when queue awake!\n");
2234
2235                 return NETDEV_TX_BUSY;
2236         }
2237
2238         jme_fill_tx_desc(jme, skb, idx);
2239
2240         jwrite32(jme, JME_TXCS, jme->reg_txcs |
2241                                 TXCS_SELECT_QUEUE0 |
2242                                 TXCS_QUEUE0S |
2243                                 TXCS_ENABLE);
2244
2245         tx_dbg(jme, "xmit: %d+%d@%lu\n",
2246                idx, skb_shinfo(skb)->nr_frags + 2, jiffies);
2247         jme_stop_queue_if_full(jme);
2248
2249         return NETDEV_TX_OK;
2250 }
2251
2252 static void
2253 jme_set_unicastaddr(struct net_device *netdev)
2254 {
2255         struct jme_adapter *jme = netdev_priv(netdev);
2256         u32 val;
2257
2258         val = (netdev->dev_addr[3] & 0xff) << 24 |
2259               (netdev->dev_addr[2] & 0xff) << 16 |
2260               (netdev->dev_addr[1] & 0xff) <<  8 |
2261               (netdev->dev_addr[0] & 0xff);
2262         jwrite32(jme, JME_RXUMA_LO, val);
2263         val = (netdev->dev_addr[5] & 0xff) << 8 |
2264               (netdev->dev_addr[4] & 0xff);
2265         jwrite32(jme, JME_RXUMA_HI, val);
2266 }
2267
2268 static int
2269 jme_set_macaddr(struct net_device *netdev, void *p)
2270 {
2271         struct jme_adapter *jme = netdev_priv(netdev);
2272         struct sockaddr *addr = p;
2273
2274         if (netif_running(netdev))
2275                 return -EBUSY;
2276
2277         spin_lock_bh(&jme->macaddr_lock);
2278         memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
2279         jme_set_unicastaddr(netdev);
2280         spin_unlock_bh(&jme->macaddr_lock);
2281
2282         return 0;
2283 }
2284
2285 static void
2286 jme_set_multi(struct net_device *netdev)
2287 {
2288         struct jme_adapter *jme = netdev_priv(netdev);
2289         u32 mc_hash[2] = {};
2290
2291         spin_lock_bh(&jme->rxmcs_lock);
2292
2293         jme->reg_rxmcs |= RXMCS_BRDFRAME | RXMCS_UNIFRAME;
2294
2295         if (netdev->flags & IFF_PROMISC) {
2296                 jme->reg_rxmcs |= RXMCS_ALLFRAME;
2297         } else if (netdev->flags & IFF_ALLMULTI) {
2298                 jme->reg_rxmcs |= RXMCS_ALLMULFRAME;
2299         } else if (netdev->flags & IFF_MULTICAST) {
2300                 struct netdev_hw_addr *ha;
2301                 int bit_nr;
2302
2303                 jme->reg_rxmcs |= RXMCS_MULFRAME | RXMCS_MULFILTERED;
2304                 netdev_for_each_mc_addr(ha, netdev) {
2305                         bit_nr = ether_crc(ETH_ALEN, ha->addr) & 0x3F;
2306                         mc_hash[bit_nr >> 5] |= 1 << (bit_nr & 0x1F);
2307                 }
2308
2309                 jwrite32(jme, JME_RXMCHT_LO, mc_hash[0]);
2310                 jwrite32(jme, JME_RXMCHT_HI, mc_hash[1]);
2311         }
2312
2313         wmb();
2314         jwrite32(jme, JME_RXMCS, jme->reg_rxmcs);
2315
2316         spin_unlock_bh(&jme->rxmcs_lock);
2317 }
2318
2319 static int
2320 jme_change_mtu(struct net_device *netdev, int new_mtu)
2321 {
2322         struct jme_adapter *jme = netdev_priv(netdev);
2323
2324         if (new_mtu == jme->old_mtu)
2325                 return 0;
2326
2327         if (((new_mtu + ETH_HLEN) > MAX_ETHERNET_JUMBO_PACKET_SIZE) ||
2328                 ((new_mtu) < IPV6_MIN_MTU))
2329                 return -EINVAL;
2330
2331
2332         netdev->mtu = new_mtu;
2333         netdev_update_features(netdev);
2334
2335         jme_restart_rx_engine(jme);
2336         jme_reset_link(jme);
2337
2338         return 0;
2339 }
2340
2341 static void
2342 jme_tx_timeout(struct net_device *netdev)
2343 {
2344         struct jme_adapter *jme = netdev_priv(netdev);
2345
2346         jme->phylink = 0;
2347         jme_reset_phy_processor(jme);
2348         if (test_bit(JME_FLAG_SSET, &jme->flags))
2349                 jme_set_settings(netdev, &jme->old_ecmd);
2350
2351         /*
2352          * Force to Reset the link again
2353          */
2354         jme_reset_link(jme);
2355 }
2356
2357 static inline void jme_pause_rx(struct jme_adapter *jme)
2358 {
2359         atomic_dec(&jme->link_changing);
2360
2361         jme_set_rx_pcc(jme, PCC_OFF);
2362         if (test_bit(JME_FLAG_POLL, &jme->flags)) {
2363                 JME_NAPI_DISABLE(jme);
2364         } else {
2365                 tasklet_disable(&jme->rxclean_task);
2366                 tasklet_disable(&jme->rxempty_task);
2367         }
2368 }
2369
2370 static inline void jme_resume_rx(struct jme_adapter *jme)
2371 {
2372         struct dynpcc_info *dpi = &(jme->dpi);
2373
2374         if (test_bit(JME_FLAG_POLL, &jme->flags)) {
2375                 JME_NAPI_ENABLE(jme);
2376         } else {
2377                 tasklet_hi_enable(&jme->rxclean_task);
2378                 tasklet_hi_enable(&jme->rxempty_task);
2379         }
2380         dpi->cur                = PCC_P1;
2381         dpi->attempt            = PCC_P1;
2382         dpi->cnt                = 0;
2383         jme_set_rx_pcc(jme, PCC_P1);
2384
2385         atomic_inc(&jme->link_changing);
2386 }
2387
2388 static void
2389 jme_get_drvinfo(struct net_device *netdev,
2390                      struct ethtool_drvinfo *info)
2391 {
2392         struct jme_adapter *jme = netdev_priv(netdev);
2393
2394         strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
2395         strlcpy(info->version, DRV_VERSION, sizeof(info->version));
2396         strlcpy(info->bus_info, pci_name(jme->pdev), sizeof(info->bus_info));
2397 }
2398
2399 static int
2400 jme_get_regs_len(struct net_device *netdev)
2401 {
2402         return JME_REG_LEN;
2403 }
2404
2405 static void
2406 mmapio_memcpy(struct jme_adapter *jme, u32 *p, u32 reg, int len)
2407 {
2408         int i;
2409
2410         for (i = 0 ; i < len ; i += 4)
2411                 p[i >> 2] = jread32(jme, reg + i);
2412 }
2413
2414 static void
2415 mdio_memcpy(struct jme_adapter *jme, u32 *p, int reg_nr)
2416 {
2417         int i;
2418         u16 *p16 = (u16 *)p;
2419
2420         for (i = 0 ; i < reg_nr ; ++i)
2421                 p16[i] = jme_mdio_read(jme->dev, jme->mii_if.phy_id, i);
2422 }
2423
2424 static void
2425 jme_get_regs(struct net_device *netdev, struct ethtool_regs *regs, void *p)
2426 {
2427         struct jme_adapter *jme = netdev_priv(netdev);
2428         u32 *p32 = (u32 *)p;
2429
2430         memset(p, 0xFF, JME_REG_LEN);
2431
2432         regs->version = 1;
2433         mmapio_memcpy(jme, p32, JME_MAC, JME_MAC_LEN);
2434
2435         p32 += 0x100 >> 2;
2436         mmapio_memcpy(jme, p32, JME_PHY, JME_PHY_LEN);
2437
2438         p32 += 0x100 >> 2;
2439         mmapio_memcpy(jme, p32, JME_MISC, JME_MISC_LEN);
2440
2441         p32 += 0x100 >> 2;
2442         mmapio_memcpy(jme, p32, JME_RSS, JME_RSS_LEN);
2443
2444         p32 += 0x100 >> 2;
2445         mdio_memcpy(jme, p32, JME_PHY_REG_NR);
2446 }
2447
2448 static int
2449 jme_get_coalesce(struct net_device *netdev, struct ethtool_coalesce *ecmd)
2450 {
2451         struct jme_adapter *jme = netdev_priv(netdev);
2452
2453         ecmd->tx_coalesce_usecs = PCC_TX_TO;
2454         ecmd->tx_max_coalesced_frames = PCC_TX_CNT;
2455
2456         if (test_bit(JME_FLAG_POLL, &jme->flags)) {
2457                 ecmd->use_adaptive_rx_coalesce = false;
2458                 ecmd->rx_coalesce_usecs = 0;
2459                 ecmd->rx_max_coalesced_frames = 0;
2460                 return 0;
2461         }
2462
2463         ecmd->use_adaptive_rx_coalesce = true;
2464
2465         switch (jme->dpi.cur) {
2466         case PCC_P1:
2467                 ecmd->rx_coalesce_usecs = PCC_P1_TO;
2468                 ecmd->rx_max_coalesced_frames = PCC_P1_CNT;
2469                 break;
2470         case PCC_P2:
2471                 ecmd->rx_coalesce_usecs = PCC_P2_TO;
2472                 ecmd->rx_max_coalesced_frames = PCC_P2_CNT;
2473                 break;
2474         case PCC_P3:
2475                 ecmd->rx_coalesce_usecs = PCC_P3_TO;
2476                 ecmd->rx_max_coalesced_frames = PCC_P3_CNT;
2477                 break;
2478         default:
2479                 break;
2480         }
2481
2482         return 0;
2483 }
2484
2485 static int
2486 jme_set_coalesce(struct net_device *netdev, struct ethtool_coalesce *ecmd)
2487 {
2488         struct jme_adapter *jme = netdev_priv(netdev);
2489         struct dynpcc_info *dpi = &(jme->dpi);
2490
2491         if (netif_running(netdev))
2492                 return -EBUSY;
2493
2494         if (ecmd->use_adaptive_rx_coalesce &&
2495             test_bit(JME_FLAG_POLL, &jme->flags)) {
2496                 clear_bit(JME_FLAG_POLL, &jme->flags);
2497                 jme->jme_rx = netif_rx;
2498                 dpi->cur                = PCC_P1;
2499                 dpi->attempt            = PCC_P1;
2500                 dpi->cnt                = 0;
2501                 jme_set_rx_pcc(jme, PCC_P1);
2502                 jme_interrupt_mode(jme);
2503         } else if (!(ecmd->use_adaptive_rx_coalesce) &&
2504                    !(test_bit(JME_FLAG_POLL, &jme->flags))) {
2505                 set_bit(JME_FLAG_POLL, &jme->flags);
2506                 jme->jme_rx = netif_receive_skb;
2507                 jme_interrupt_mode(jme);
2508         }
2509
2510         return 0;
2511 }
2512
2513 static void
2514 jme_get_pauseparam(struct net_device *netdev,
2515                         struct ethtool_pauseparam *ecmd)
2516 {
2517         struct jme_adapter *jme = netdev_priv(netdev);
2518         u32 val;
2519
2520         ecmd->tx_pause = (jme->reg_txpfc & TXPFC_PF_EN) != 0;
2521         ecmd->rx_pause = (jme->reg_rxmcs & RXMCS_FLOWCTRL) != 0;
2522
2523         spin_lock_bh(&jme->phy_lock);
2524         val = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_ADVERTISE);
2525         spin_unlock_bh(&jme->phy_lock);
2526
2527         ecmd->autoneg =
2528                 (val & (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM)) != 0;
2529 }
2530
2531 static int
2532 jme_set_pauseparam(struct net_device *netdev,
2533                         struct ethtool_pauseparam *ecmd)
2534 {
2535         struct jme_adapter *jme = netdev_priv(netdev);
2536         u32 val;
2537
2538         if (((jme->reg_txpfc & TXPFC_PF_EN) != 0) ^
2539                 (ecmd->tx_pause != 0)) {
2540
2541                 if (ecmd->tx_pause)
2542                         jme->reg_txpfc |= TXPFC_PF_EN;
2543                 else
2544                         jme->reg_txpfc &= ~TXPFC_PF_EN;
2545
2546                 jwrite32(jme, JME_TXPFC, jme->reg_txpfc);
2547         }
2548
2549         spin_lock_bh(&jme->rxmcs_lock);
2550         if (((jme->reg_rxmcs & RXMCS_FLOWCTRL) != 0) ^
2551                 (ecmd->rx_pause != 0)) {
2552
2553                 if (ecmd->rx_pause)
2554                         jme->reg_rxmcs |= RXMCS_FLOWCTRL;
2555                 else
2556                         jme->reg_rxmcs &= ~RXMCS_FLOWCTRL;
2557
2558                 jwrite32(jme, JME_RXMCS, jme->reg_rxmcs);
2559         }
2560         spin_unlock_bh(&jme->rxmcs_lock);
2561
2562         spin_lock_bh(&jme->phy_lock);
2563         val = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_ADVERTISE);
2564         if (((val & (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM)) != 0) ^
2565                 (ecmd->autoneg != 0)) {
2566
2567                 if (ecmd->autoneg)
2568                         val |= (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
2569                 else
2570                         val &= ~(ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
2571
2572                 jme_mdio_write(jme->dev, jme->mii_if.phy_id,
2573                                 MII_ADVERTISE, val);
2574         }
2575         spin_unlock_bh(&jme->phy_lock);
2576
2577         return 0;
2578 }
2579
2580 static void
2581 jme_get_wol(struct net_device *netdev,
2582                 struct ethtool_wolinfo *wol)
2583 {
2584         struct jme_adapter *jme = netdev_priv(netdev);
2585
2586         wol->supported = WAKE_MAGIC | WAKE_PHY;
2587
2588         wol->wolopts = 0;
2589
2590         if (jme->reg_pmcs & (PMCS_LFEN | PMCS_LREN))
2591                 wol->wolopts |= WAKE_PHY;
2592
2593         if (jme->reg_pmcs & PMCS_MFEN)
2594                 wol->wolopts |= WAKE_MAGIC;
2595
2596 }
2597
2598 static int
2599 jme_set_wol(struct net_device *netdev,
2600                 struct ethtool_wolinfo *wol)
2601 {
2602         struct jme_adapter *jme = netdev_priv(netdev);
2603
2604         if (wol->wolopts & (WAKE_MAGICSECURE |
2605                                 WAKE_UCAST |
2606                                 WAKE_MCAST |
2607                                 WAKE_BCAST |
2608                                 WAKE_ARP))
2609                 return -EOPNOTSUPP;
2610
2611         jme->reg_pmcs = 0;
2612
2613         if (wol->wolopts & WAKE_PHY)
2614                 jme->reg_pmcs |= PMCS_LFEN | PMCS_LREN;
2615
2616         if (wol->wolopts & WAKE_MAGIC)
2617                 jme->reg_pmcs |= PMCS_MFEN;
2618
2619         jwrite32(jme, JME_PMCS, jme->reg_pmcs);
2620         device_set_wakeup_enable(&jme->pdev->dev, !!(jme->reg_pmcs));
2621
2622         return 0;
2623 }
2624
2625 static int
2626 jme_get_settings(struct net_device *netdev,
2627                      struct ethtool_cmd *ecmd)
2628 {
2629         struct jme_adapter *jme = netdev_priv(netdev);
2630         int rc;
2631
2632         spin_lock_bh(&jme->phy_lock);
2633         rc = mii_ethtool_gset(&(jme->mii_if), ecmd);
2634         spin_unlock_bh(&jme->phy_lock);
2635         return rc;
2636 }
2637
2638 static int
2639 jme_set_settings(struct net_device *netdev,
2640                      struct ethtool_cmd *ecmd)
2641 {
2642         struct jme_adapter *jme = netdev_priv(netdev);
2643         int rc, fdc = 0;
2644
2645         if (ethtool_cmd_speed(ecmd) == SPEED_1000
2646             && ecmd->autoneg != AUTONEG_ENABLE)
2647                 return -EINVAL;
2648
2649         /*
2650          * Check If user changed duplex only while force_media.
2651          * Hardware would not generate link change interrupt.
2652          */
2653         if (jme->mii_if.force_media &&
2654         ecmd->autoneg != AUTONEG_ENABLE &&
2655         (jme->mii_if.full_duplex != ecmd->duplex))
2656                 fdc = 1;
2657
2658         spin_lock_bh(&jme->phy_lock);
2659         rc = mii_ethtool_sset(&(jme->mii_if), ecmd);
2660         spin_unlock_bh(&jme->phy_lock);
2661
2662         if (!rc) {
2663                 if (fdc)
2664                         jme_reset_link(jme);
2665                 jme->old_ecmd = *ecmd;
2666                 set_bit(JME_FLAG_SSET, &jme->flags);
2667         }
2668
2669         return rc;
2670 }
2671
2672 static int
2673 jme_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd)
2674 {
2675         int rc;
2676         struct jme_adapter *jme = netdev_priv(netdev);
2677         struct mii_ioctl_data *mii_data = if_mii(rq);
2678         unsigned int duplex_chg;
2679
2680         if (cmd == SIOCSMIIREG) {
2681                 u16 val = mii_data->val_in;
2682                 if (!(val & (BMCR_RESET|BMCR_ANENABLE)) &&
2683                     (val & BMCR_SPEED1000))
2684                         return -EINVAL;
2685         }
2686
2687         spin_lock_bh(&jme->phy_lock);
2688         rc = generic_mii_ioctl(&jme->mii_if, mii_data, cmd, &duplex_chg);
2689         spin_unlock_bh(&jme->phy_lock);
2690
2691         if (!rc && (cmd == SIOCSMIIREG)) {
2692                 if (duplex_chg)
2693                         jme_reset_link(jme);
2694                 jme_get_settings(netdev, &jme->old_ecmd);
2695                 set_bit(JME_FLAG_SSET, &jme->flags);
2696         }
2697
2698         return rc;
2699 }
2700
2701 static u32
2702 jme_get_link(struct net_device *netdev)
2703 {
2704         struct jme_adapter *jme = netdev_priv(netdev);
2705         return jread32(jme, JME_PHY_LINK) & PHY_LINK_UP;
2706 }
2707
2708 static u32
2709 jme_get_msglevel(struct net_device *netdev)
2710 {
2711         struct jme_adapter *jme = netdev_priv(netdev);
2712         return jme->msg_enable;
2713 }
2714
2715 static void
2716 jme_set_msglevel(struct net_device *netdev, u32 value)
2717 {
2718         struct jme_adapter *jme = netdev_priv(netdev);
2719         jme->msg_enable = value;
2720 }
2721
2722 static netdev_features_t
2723 jme_fix_features(struct net_device *netdev, netdev_features_t features)
2724 {
2725         if (netdev->mtu > 1900)
2726                 features &= ~(NETIF_F_ALL_TSO | NETIF_F_ALL_CSUM);
2727         return features;
2728 }
2729
2730 static int
2731 jme_set_features(struct net_device *netdev, netdev_features_t features)
2732 {
2733         struct jme_adapter *jme = netdev_priv(netdev);
2734
2735         spin_lock_bh(&jme->rxmcs_lock);
2736         if (features & NETIF_F_RXCSUM)
2737                 jme->reg_rxmcs |= RXMCS_CHECKSUM;
2738         else
2739                 jme->reg_rxmcs &= ~RXMCS_CHECKSUM;
2740         jwrite32(jme, JME_RXMCS, jme->reg_rxmcs);
2741         spin_unlock_bh(&jme->rxmcs_lock);
2742
2743         return 0;
2744 }
2745
2746 #ifdef CONFIG_NET_POLL_CONTROLLER
2747 static void jme_netpoll(struct net_device *dev)
2748 {
2749         unsigned long flags;
2750
2751         local_irq_save(flags);
2752         jme_intr(dev->irq, dev);
2753         local_irq_restore(flags);
2754 }
2755 #endif
2756
2757 static int
2758 jme_nway_reset(struct net_device *netdev)
2759 {
2760         struct jme_adapter *jme = netdev_priv(netdev);
2761         jme_restart_an(jme);
2762         return 0;
2763 }
2764
2765 static u8
2766 jme_smb_read(struct jme_adapter *jme, unsigned int addr)
2767 {
2768         u32 val;
2769         int to;
2770
2771         val = jread32(jme, JME_SMBCSR);
2772         to = JME_SMB_BUSY_TIMEOUT;
2773         while ((val & SMBCSR_BUSY) && --to) {
2774                 msleep(1);
2775                 val = jread32(jme, JME_SMBCSR);
2776         }
2777         if (!to) {
2778                 netif_err(jme, hw, jme->dev, "SMB Bus Busy\n");
2779                 return 0xFF;
2780         }
2781
2782         jwrite32(jme, JME_SMBINTF,
2783                 ((addr << SMBINTF_HWADDR_SHIFT) & SMBINTF_HWADDR) |
2784                 SMBINTF_HWRWN_READ |
2785                 SMBINTF_HWCMD);
2786
2787         val = jread32(jme, JME_SMBINTF);
2788         to = JME_SMB_BUSY_TIMEOUT;
2789         while ((val & SMBINTF_HWCMD) && --to) {
2790                 msleep(1);
2791                 val = jread32(jme, JME_SMBINTF);
2792         }
2793         if (!to) {
2794                 netif_err(jme, hw, jme->dev, "SMB Bus Busy\n");
2795                 return 0xFF;
2796         }
2797
2798         return (val & SMBINTF_HWDATR) >> SMBINTF_HWDATR_SHIFT;
2799 }
2800
2801 static void
2802 jme_smb_write(struct jme_adapter *jme, unsigned int addr, u8 data)
2803 {
2804         u32 val;
2805         int to;
2806
2807         val = jread32(jme, JME_SMBCSR);
2808         to = JME_SMB_BUSY_TIMEOUT;
2809         while ((val & SMBCSR_BUSY) && --to) {
2810                 msleep(1);
2811                 val = jread32(jme, JME_SMBCSR);
2812         }
2813         if (!to) {
2814                 netif_err(jme, hw, jme->dev, "SMB Bus Busy\n");
2815                 return;
2816         }
2817
2818         jwrite32(jme, JME_SMBINTF,
2819                 ((data << SMBINTF_HWDATW_SHIFT) & SMBINTF_HWDATW) |
2820                 ((addr << SMBINTF_HWADDR_SHIFT) & SMBINTF_HWADDR) |
2821                 SMBINTF_HWRWN_WRITE |
2822                 SMBINTF_HWCMD);
2823
2824         val = jread32(jme, JME_SMBINTF);
2825         to = JME_SMB_BUSY_TIMEOUT;
2826         while ((val & SMBINTF_HWCMD) && --to) {
2827                 msleep(1);
2828                 val = jread32(jme, JME_SMBINTF);
2829         }
2830         if (!to) {
2831                 netif_err(jme, hw, jme->dev, "SMB Bus Busy\n");
2832                 return;
2833         }
2834
2835         mdelay(2);
2836 }
2837
2838 static int
2839 jme_get_eeprom_len(struct net_device *netdev)
2840 {
2841         struct jme_adapter *jme = netdev_priv(netdev);
2842         u32 val;
2843         val = jread32(jme, JME_SMBCSR);
2844         return (val & SMBCSR_EEPROMD) ? JME_SMB_LEN : 0;
2845 }
2846
2847 static int
2848 jme_get_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         /*
2855          * ethtool will check the boundary for us
2856          */
2857         eeprom->magic = JME_EEPROM_MAGIC;
2858         for (i = 0 ; i < len ; ++i)
2859                 data[i] = jme_smb_read(jme, i + offset);
2860
2861         return 0;
2862 }
2863
2864 static int
2865 jme_set_eeprom(struct net_device *netdev,
2866                 struct ethtool_eeprom *eeprom, u8 *data)
2867 {
2868         struct jme_adapter *jme = netdev_priv(netdev);
2869         int i, offset = eeprom->offset, len = eeprom->len;
2870
2871         if (eeprom->magic != JME_EEPROM_MAGIC)
2872                 return -EINVAL;
2873
2874         /*
2875          * ethtool will check the boundary for us
2876          */
2877         for (i = 0 ; i < len ; ++i)
2878                 jme_smb_write(jme, i + offset, data[i]);
2879
2880         return 0;
2881 }
2882
2883 static const struct ethtool_ops jme_ethtool_ops = {
2884         .get_drvinfo            = jme_get_drvinfo,
2885         .get_regs_len           = jme_get_regs_len,
2886         .get_regs               = jme_get_regs,
2887         .get_coalesce           = jme_get_coalesce,
2888         .set_coalesce           = jme_set_coalesce,
2889         .get_pauseparam         = jme_get_pauseparam,
2890         .set_pauseparam         = jme_set_pauseparam,
2891         .get_wol                = jme_get_wol,
2892         .set_wol                = jme_set_wol,
2893         .get_settings           = jme_get_settings,
2894         .set_settings           = jme_set_settings,
2895         .get_link               = jme_get_link,
2896         .get_msglevel           = jme_get_msglevel,
2897         .set_msglevel           = jme_set_msglevel,
2898         .nway_reset             = jme_nway_reset,
2899         .get_eeprom_len         = jme_get_eeprom_len,
2900         .get_eeprom             = jme_get_eeprom,
2901         .set_eeprom             = jme_set_eeprom,
2902 };
2903
2904 static int
2905 jme_pci_dma64(struct pci_dev *pdev)
2906 {
2907         if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250 &&
2908             !pci_set_dma_mask(pdev, DMA_BIT_MASK(64)))
2909                 if (!pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)))
2910                         return 1;
2911
2912         if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250 &&
2913             !pci_set_dma_mask(pdev, DMA_BIT_MASK(40)))
2914                 if (!pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(40)))
2915                         return 1;
2916
2917         if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32)))
2918                 if (!pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)))
2919                         return 0;
2920
2921         return -1;
2922 }
2923
2924 static inline void
2925 jme_phy_init(struct jme_adapter *jme)
2926 {
2927         u16 reg26;
2928
2929         reg26 = jme_mdio_read(jme->dev, jme->mii_if.phy_id, 26);
2930         jme_mdio_write(jme->dev, jme->mii_if.phy_id, 26, reg26 | 0x1000);
2931 }
2932
2933 static inline void
2934 jme_check_hw_ver(struct jme_adapter *jme)
2935 {
2936         u32 chipmode;
2937
2938         chipmode = jread32(jme, JME_CHIPMODE);
2939
2940         jme->fpgaver = (chipmode & CM_FPGAVER_MASK) >> CM_FPGAVER_SHIFT;
2941         jme->chiprev = (chipmode & CM_CHIPREV_MASK) >> CM_CHIPREV_SHIFT;
2942         jme->chip_main_rev = jme->chiprev & 0xF;
2943         jme->chip_sub_rev = (jme->chiprev >> 4) & 0xF;
2944 }
2945
2946 static const struct net_device_ops jme_netdev_ops = {
2947         .ndo_open               = jme_open,
2948         .ndo_stop               = jme_close,
2949         .ndo_validate_addr      = eth_validate_addr,
2950         .ndo_do_ioctl           = jme_ioctl,
2951         .ndo_start_xmit         = jme_start_xmit,
2952         .ndo_set_mac_address    = jme_set_macaddr,
2953         .ndo_set_rx_mode        = jme_set_multi,
2954         .ndo_change_mtu         = jme_change_mtu,
2955         .ndo_tx_timeout         = jme_tx_timeout,
2956         .ndo_fix_features       = jme_fix_features,
2957         .ndo_set_features       = jme_set_features,
2958 #ifdef CONFIG_NET_POLL_CONTROLLER
2959         .ndo_poll_controller    = jme_netpoll,
2960 #endif
2961 };
2962
2963 static int __devinit
2964 jme_init_one(struct pci_dev *pdev,
2965              const struct pci_device_id *ent)
2966 {
2967         int rc = 0, using_dac, i;
2968         struct net_device *netdev;
2969         struct jme_adapter *jme;
2970         u16 bmcr, bmsr;
2971         u32 apmc;
2972
2973         /*
2974          * set up PCI device basics
2975          */
2976         rc = pci_enable_device(pdev);
2977         if (rc) {
2978                 pr_err("Cannot enable PCI device\n");
2979                 goto err_out;
2980         }
2981
2982         using_dac = jme_pci_dma64(pdev);
2983         if (using_dac < 0) {
2984                 pr_err("Cannot set PCI DMA Mask\n");
2985                 rc = -EIO;
2986                 goto err_out_disable_pdev;
2987         }
2988
2989         if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
2990                 pr_err("No PCI resource region found\n");
2991                 rc = -ENOMEM;
2992                 goto err_out_disable_pdev;
2993         }
2994
2995         rc = pci_request_regions(pdev, DRV_NAME);
2996         if (rc) {
2997                 pr_err("Cannot obtain PCI resource region\n");
2998                 goto err_out_disable_pdev;
2999         }
3000
3001         pci_set_master(pdev);
3002
3003         /*
3004          * alloc and init net device
3005          */
3006         netdev = alloc_etherdev(sizeof(*jme));
3007         if (!netdev) {
3008                 rc = -ENOMEM;
3009                 goto err_out_release_regions;
3010         }
3011         netdev->netdev_ops = &jme_netdev_ops;
3012         netdev->ethtool_ops             = &jme_ethtool_ops;
3013         netdev->watchdog_timeo          = TX_TIMEOUT;
3014         netdev->hw_features             =       NETIF_F_IP_CSUM |
3015                                                 NETIF_F_IPV6_CSUM |
3016                                                 NETIF_F_SG |
3017                                                 NETIF_F_TSO |
3018                                                 NETIF_F_TSO6 |
3019                                                 NETIF_F_RXCSUM;
3020         netdev->features                =       NETIF_F_IP_CSUM |
3021                                                 NETIF_F_IPV6_CSUM |
3022                                                 NETIF_F_SG |
3023                                                 NETIF_F_TSO |
3024                                                 NETIF_F_TSO6 |
3025                                                 NETIF_F_HW_VLAN_TX |
3026                                                 NETIF_F_HW_VLAN_RX;
3027         if (using_dac)
3028                 netdev->features        |=      NETIF_F_HIGHDMA;
3029
3030         SET_NETDEV_DEV(netdev, &pdev->dev);
3031         pci_set_drvdata(pdev, netdev);
3032
3033         /*
3034          * init adapter info
3035          */
3036         jme = netdev_priv(netdev);
3037         jme->pdev = pdev;
3038         jme->dev = netdev;
3039         jme->jme_rx = netif_rx;
3040         jme->old_mtu = netdev->mtu = 1500;
3041         jme->phylink = 0;
3042         jme->tx_ring_size = 1 << 10;
3043         jme->tx_ring_mask = jme->tx_ring_size - 1;
3044         jme->tx_wake_threshold = 1 << 9;
3045         jme->rx_ring_size = 1 << 9;
3046         jme->rx_ring_mask = jme->rx_ring_size - 1;
3047         jme->msg_enable = JME_DEF_MSG_ENABLE;
3048         jme->regs = ioremap(pci_resource_start(pdev, 0),
3049                              pci_resource_len(pdev, 0));
3050         if (!(jme->regs)) {
3051                 pr_err("Mapping PCI resource region error\n");
3052                 rc = -ENOMEM;
3053                 goto err_out_free_netdev;
3054         }
3055
3056         if (no_pseudohp) {
3057                 apmc = jread32(jme, JME_APMC) & ~JME_APMC_PSEUDO_HP_EN;
3058                 jwrite32(jme, JME_APMC, apmc);
3059         } else if (force_pseudohp) {
3060                 apmc = jread32(jme, JME_APMC) | JME_APMC_PSEUDO_HP_EN;
3061                 jwrite32(jme, JME_APMC, apmc);
3062         }
3063
3064         NETIF_NAPI_SET(netdev, &jme->napi, jme_poll, jme->rx_ring_size >> 2)
3065
3066         spin_lock_init(&jme->phy_lock);
3067         spin_lock_init(&jme->macaddr_lock);
3068         spin_lock_init(&jme->rxmcs_lock);
3069
3070         atomic_set(&jme->link_changing, 1);
3071         atomic_set(&jme->rx_cleaning, 1);
3072         atomic_set(&jme->tx_cleaning, 1);
3073         atomic_set(&jme->rx_empty, 1);
3074
3075         tasklet_init(&jme->pcc_task,
3076                      jme_pcc_tasklet,
3077                      (unsigned long) jme);
3078         tasklet_init(&jme->linkch_task,
3079                      jme_link_change_tasklet,
3080                      (unsigned long) jme);
3081         tasklet_init(&jme->txclean_task,
3082                      jme_tx_clean_tasklet,
3083                      (unsigned long) jme);
3084         tasklet_init(&jme->rxclean_task,
3085                      jme_rx_clean_tasklet,
3086                      (unsigned long) jme);
3087         tasklet_init(&jme->rxempty_task,
3088                      jme_rx_empty_tasklet,
3089                      (unsigned long) jme);
3090         tasklet_disable_nosync(&jme->linkch_task);
3091         tasklet_disable_nosync(&jme->txclean_task);
3092         tasklet_disable_nosync(&jme->rxclean_task);
3093         tasklet_disable_nosync(&jme->rxempty_task);
3094         jme->dpi.cur = PCC_P1;
3095
3096         jme->reg_ghc = 0;
3097         jme->reg_rxcs = RXCS_DEFAULT;
3098         jme->reg_rxmcs = RXMCS_DEFAULT;
3099         jme->reg_txpfc = 0;
3100         jme->reg_pmcs = PMCS_MFEN;
3101         jme->reg_gpreg1 = GPREG1_DEFAULT;
3102
3103         if (jme->reg_rxmcs & RXMCS_CHECKSUM)
3104                 netdev->features |= NETIF_F_RXCSUM;
3105
3106         /*
3107          * Get Max Read Req Size from PCI Config Space
3108          */
3109         pci_read_config_byte(pdev, PCI_DCSR_MRRS, &jme->mrrs);
3110         jme->mrrs &= PCI_DCSR_MRRS_MASK;
3111         switch (jme->mrrs) {
3112         case MRRS_128B:
3113                 jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_128B;
3114                 break;
3115         case MRRS_256B:
3116                 jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_256B;
3117                 break;
3118         default:
3119                 jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_512B;
3120                 break;
3121         }
3122
3123         /*
3124          * Must check before reset_mac_processor
3125          */
3126         jme_check_hw_ver(jme);
3127         jme->mii_if.dev = netdev;
3128         if (jme->fpgaver) {
3129                 jme->mii_if.phy_id = 0;
3130                 for (i = 1 ; i < 32 ; ++i) {
3131                         bmcr = jme_mdio_read(netdev, i, MII_BMCR);
3132                         bmsr = jme_mdio_read(netdev, i, MII_BMSR);
3133                         if (bmcr != 0xFFFFU && (bmcr != 0 || bmsr != 0)) {
3134                                 jme->mii_if.phy_id = i;
3135                                 break;
3136                         }
3137                 }
3138
3139                 if (!jme->mii_if.phy_id) {
3140                         rc = -EIO;
3141                         pr_err("Can not find phy_id\n");
3142                         goto err_out_unmap;
3143                 }
3144
3145                 jme->reg_ghc |= GHC_LINK_POLL;
3146         } else {
3147                 jme->mii_if.phy_id = 1;
3148         }
3149         if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250)
3150                 jme->mii_if.supports_gmii = true;
3151         else
3152                 jme->mii_if.supports_gmii = false;
3153         jme->mii_if.phy_id_mask = 0x1F;
3154         jme->mii_if.reg_num_mask = 0x1F;
3155         jme->mii_if.mdio_read = jme_mdio_read;
3156         jme->mii_if.mdio_write = jme_mdio_write;
3157
3158         jme_clear_pm(jme);
3159         pci_set_power_state(jme->pdev, PCI_D0);
3160         device_set_wakeup_enable(&pdev->dev, true);
3161
3162         jme_set_phyfifo_5level(jme);
3163         jme->pcirev = pdev->revision;
3164         if (!jme->fpgaver)
3165                 jme_phy_init(jme);
3166         jme_phy_off(jme);
3167
3168         /*
3169          * Reset MAC processor and reload EEPROM for MAC Address
3170          */
3171         jme_reset_mac_processor(jme);
3172         rc = jme_reload_eeprom(jme);
3173         if (rc) {
3174                 pr_err("Reload eeprom for reading MAC Address error\n");
3175                 goto err_out_unmap;
3176         }
3177         jme_load_macaddr(netdev);
3178
3179         /*
3180          * Tell stack that we are not ready to work until open()
3181          */
3182         netif_carrier_off(netdev);
3183
3184         rc = register_netdev(netdev);
3185         if (rc) {
3186                 pr_err("Cannot register net device\n");
3187                 goto err_out_unmap;
3188         }
3189
3190         netif_info(jme, probe, jme->dev, "%s%s chiprev:%x pcirev:%x macaddr:%pM\n",
3191                    (jme->pdev->device == PCI_DEVICE_ID_JMICRON_JMC250) ?
3192                    "JMC250 Gigabit Ethernet" :
3193                    (jme->pdev->device == PCI_DEVICE_ID_JMICRON_JMC260) ?
3194                    "JMC260 Fast Ethernet" : "Unknown",
3195                    (jme->fpgaver != 0) ? " (FPGA)" : "",
3196                    (jme->fpgaver != 0) ? jme->fpgaver : jme->chiprev,
3197                    jme->pcirev, netdev->dev_addr);
3198
3199         return 0;
3200
3201 err_out_unmap:
3202         iounmap(jme->regs);
3203 err_out_free_netdev:
3204         pci_set_drvdata(pdev, NULL);
3205         free_netdev(netdev);
3206 err_out_release_regions:
3207         pci_release_regions(pdev);
3208 err_out_disable_pdev:
3209         pci_disable_device(pdev);
3210 err_out:
3211         return rc;
3212 }
3213
3214 static void __devexit
3215 jme_remove_one(struct pci_dev *pdev)
3216 {
3217         struct net_device *netdev = pci_get_drvdata(pdev);
3218         struct jme_adapter *jme = netdev_priv(netdev);
3219
3220         unregister_netdev(netdev);
3221         iounmap(jme->regs);
3222         pci_set_drvdata(pdev, NULL);
3223         free_netdev(netdev);
3224         pci_release_regions(pdev);
3225         pci_disable_device(pdev);
3226
3227 }
3228
3229 static void
3230 jme_shutdown(struct pci_dev *pdev)
3231 {
3232         struct net_device *netdev = pci_get_drvdata(pdev);
3233         struct jme_adapter *jme = netdev_priv(netdev);
3234
3235         jme_powersave_phy(jme);
3236         pci_pme_active(pdev, true);
3237 }
3238
3239 #ifdef CONFIG_PM_SLEEP
3240 static int
3241 jme_suspend(struct device *dev)
3242 {
3243         struct pci_dev *pdev = to_pci_dev(dev);
3244         struct net_device *netdev = pci_get_drvdata(pdev);
3245         struct jme_adapter *jme = netdev_priv(netdev);
3246
3247         if (!netif_running(netdev))
3248                 return 0;
3249
3250         atomic_dec(&jme->link_changing);
3251
3252         netif_device_detach(netdev);
3253         netif_stop_queue(netdev);
3254         jme_stop_irq(jme);
3255
3256         tasklet_disable(&jme->txclean_task);
3257         tasklet_disable(&jme->rxclean_task);
3258         tasklet_disable(&jme->rxempty_task);
3259
3260         if (netif_carrier_ok(netdev)) {
3261                 if (test_bit(JME_FLAG_POLL, &jme->flags))
3262                         jme_polling_mode(jme);
3263
3264                 jme_stop_pcc_timer(jme);
3265                 jme_disable_rx_engine(jme);
3266                 jme_disable_tx_engine(jme);
3267                 jme_reset_mac_processor(jme);
3268                 jme_free_rx_resources(jme);
3269                 jme_free_tx_resources(jme);
3270                 netif_carrier_off(netdev);
3271                 jme->phylink = 0;
3272         }
3273
3274         tasklet_enable(&jme->txclean_task);
3275         tasklet_hi_enable(&jme->rxclean_task);
3276         tasklet_hi_enable(&jme->rxempty_task);
3277
3278         jme_powersave_phy(jme);
3279
3280         return 0;
3281 }
3282
3283 static int
3284 jme_resume(struct device *dev)
3285 {
3286         struct pci_dev *pdev = to_pci_dev(dev);
3287         struct net_device *netdev = pci_get_drvdata(pdev);
3288         struct jme_adapter *jme = netdev_priv(netdev);
3289
3290         if (!netif_running(netdev))
3291                 return 0;
3292
3293         jme_clear_pm(jme);
3294         jme_phy_on(jme);
3295         if (test_bit(JME_FLAG_SSET, &jme->flags))
3296                 jme_set_settings(netdev, &jme->old_ecmd);
3297         else
3298                 jme_reset_phy_processor(jme);
3299         jme_phy_calibration(jme);
3300         jme_phy_setEA(jme);
3301         jme_start_irq(jme);
3302         netif_device_attach(netdev);
3303
3304         atomic_inc(&jme->link_changing);
3305
3306         jme_reset_link(jme);
3307
3308         return 0;
3309 }
3310
3311 static SIMPLE_DEV_PM_OPS(jme_pm_ops, jme_suspend, jme_resume);
3312 #define JME_PM_OPS (&jme_pm_ops)
3313
3314 #else
3315
3316 #define JME_PM_OPS NULL
3317 #endif
3318
3319 static DEFINE_PCI_DEVICE_TABLE(jme_pci_tbl) = {
3320         { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMC250) },
3321         { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMC260) },
3322         { }
3323 };
3324
3325 static struct pci_driver jme_driver = {
3326         .name           = DRV_NAME,
3327         .id_table       = jme_pci_tbl,
3328         .probe          = jme_init_one,
3329         .remove         = __devexit_p(jme_remove_one),
3330         .shutdown       = jme_shutdown,
3331         .driver.pm      = JME_PM_OPS,
3332 };
3333
3334 static int __init
3335 jme_init_module(void)
3336 {
3337         pr_info("JMicron JMC2XX ethernet driver version %s\n", DRV_VERSION);
3338         return pci_register_driver(&jme_driver);
3339 }
3340
3341 static void __exit
3342 jme_cleanup_module(void)
3343 {
3344         pci_unregister_driver(&jme_driver);
3345 }
3346
3347 module_init(jme_init_module);
3348 module_exit(jme_cleanup_module);
3349
3350 MODULE_AUTHOR("Guo-Fu Tseng <cooldavid@cooldavid.org>");
3351 MODULE_DESCRIPTION("JMicron JMC2x0 PCI Express Ethernet driver");
3352 MODULE_LICENSE("GPL");
3353 MODULE_VERSION(DRV_VERSION);
3354 MODULE_DEVICE_TABLE(pci, jme_pci_tbl);