1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * JMicron JMC2x0 series PCIe Ethernet Linux Device Driver 4 * 5 * Copyright 2008 JMicron Technology Corporation 6 * http://www.jmicron.com/ 7 * Copyright (c) 2009 - 2010 Guo-Fu Tseng <cooldavid@cooldavid.org> 8 * 9 * Author: Guo-Fu Tseng <cooldavid@cooldavid.org> 10 */ 11 12 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 13 14 #include <linux/module.h> 15 #include <linux/kernel.h> 16 #include <linux/pci.h> 17 #include <linux/pci-aspm.h> 18 #include <linux/netdevice.h> 19 #include <linux/etherdevice.h> 20 #include <linux/ethtool.h> 21 #include <linux/mii.h> 22 #include <linux/crc32.h> 23 #include <linux/delay.h> 24 #include <linux/spinlock.h> 25 #include <linux/in.h> 26 #include <linux/ip.h> 27 #include <linux/ipv6.h> 28 #include <linux/tcp.h> 29 #include <linux/udp.h> 30 #include <linux/if_vlan.h> 31 #include <linux/slab.h> 32 #include <net/ip6_checksum.h> 33 #include "jme.h" 34 35 static int force_pseudohp = -1; 36 static int no_pseudohp = -1; 37 static int no_extplug = -1; 38 module_param(force_pseudohp, int, 0); 39 MODULE_PARM_DESC(force_pseudohp, 40 "Enable pseudo hot-plug feature manually by driver instead of BIOS."); 41 module_param(no_pseudohp, int, 0); 42 MODULE_PARM_DESC(no_pseudohp, "Disable pseudo hot-plug feature."); 43 module_param(no_extplug, int, 0); 44 MODULE_PARM_DESC(no_extplug, 45 "Do not use external plug signal for pseudo hot-plug."); 46 47 static int 48 jme_mdio_read(struct net_device *netdev, int phy, int reg) 49 { 50 struct jme_adapter *jme = netdev_priv(netdev); 51 int i, val, again = (reg == MII_BMSR) ? 1 : 0; 52 53 read_again: 54 jwrite32(jme, JME_SMI, SMI_OP_REQ | 55 smi_phy_addr(phy) | 56 smi_reg_addr(reg)); 57 58 wmb(); 59 for (i = JME_PHY_TIMEOUT * 50 ; i > 0 ; --i) { 60 udelay(20); 61 val = jread32(jme, JME_SMI); 62 if ((val & SMI_OP_REQ) == 0) 63 break; 64 } 65 66 if (i == 0) { 67 pr_err("phy(%d) read timeout : %d\n", phy, reg); 68 return 0; 69 } 70 71 if (again--) 72 goto read_again; 73 74 return (val & SMI_DATA_MASK) >> SMI_DATA_SHIFT; 75 } 76 77 static void 78 jme_mdio_write(struct net_device *netdev, 79 int phy, int reg, int val) 80 { 81 struct jme_adapter *jme = netdev_priv(netdev); 82 int i; 83 84 jwrite32(jme, JME_SMI, SMI_OP_WRITE | SMI_OP_REQ | 85 ((val << SMI_DATA_SHIFT) & SMI_DATA_MASK) | 86 smi_phy_addr(phy) | smi_reg_addr(reg)); 87 88 wmb(); 89 for (i = JME_PHY_TIMEOUT * 50 ; i > 0 ; --i) { 90 udelay(20); 91 if ((jread32(jme, JME_SMI) & SMI_OP_REQ) == 0) 92 break; 93 } 94 95 if (i == 0) 96 pr_err("phy(%d) write timeout : %d\n", phy, reg); 97 } 98 99 static inline void 100 jme_reset_phy_processor(struct jme_adapter *jme) 101 { 102 u32 val; 103 104 jme_mdio_write(jme->dev, 105 jme->mii_if.phy_id, 106 MII_ADVERTISE, ADVERTISE_ALL | 107 ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM); 108 109 if (jme->pdev->device == PCI_DEVICE_ID_JMICRON_JMC250) 110 jme_mdio_write(jme->dev, 111 jme->mii_if.phy_id, 112 MII_CTRL1000, 113 ADVERTISE_1000FULL | ADVERTISE_1000HALF); 114 115 val = jme_mdio_read(jme->dev, 116 jme->mii_if.phy_id, 117 MII_BMCR); 118 119 jme_mdio_write(jme->dev, 120 jme->mii_if.phy_id, 121 MII_BMCR, val | BMCR_RESET); 122 } 123 124 static void 125 jme_setup_wakeup_frame(struct jme_adapter *jme, 126 const u32 *mask, u32 crc, int fnr) 127 { 128 int i; 129 130 /* 131 * Setup CRC pattern 132 */ 133 jwrite32(jme, JME_WFOI, WFOI_CRC_SEL | (fnr & WFOI_FRAME_SEL)); 134 wmb(); 135 jwrite32(jme, JME_WFODP, crc); 136 wmb(); 137 138 /* 139 * Setup Mask 140 */ 141 for (i = 0 ; i < WAKEUP_FRAME_MASK_DWNR ; ++i) { 142 jwrite32(jme, JME_WFOI, 143 ((i << WFOI_MASK_SHIFT) & WFOI_MASK_SEL) | 144 (fnr & WFOI_FRAME_SEL)); 145 wmb(); 146 jwrite32(jme, JME_WFODP, mask[i]); 147 wmb(); 148 } 149 } 150 151 static inline void 152 jme_mac_rxclk_off(struct jme_adapter *jme) 153 { 154 jme->reg_gpreg1 |= GPREG1_RXCLKOFF; 155 jwrite32f(jme, JME_GPREG1, jme->reg_gpreg1); 156 } 157 158 static inline void 159 jme_mac_rxclk_on(struct jme_adapter *jme) 160 { 161 jme->reg_gpreg1 &= ~GPREG1_RXCLKOFF; 162 jwrite32f(jme, JME_GPREG1, jme->reg_gpreg1); 163 } 164 165 static inline void 166 jme_mac_txclk_off(struct jme_adapter *jme) 167 { 168 jme->reg_ghc &= ~(GHC_TO_CLK_SRC | GHC_TXMAC_CLK_SRC); 169 jwrite32f(jme, JME_GHC, jme->reg_ghc); 170 } 171 172 static inline void 173 jme_mac_txclk_on(struct jme_adapter *jme) 174 { 175 u32 speed = jme->reg_ghc & GHC_SPEED; 176 if (speed == GHC_SPEED_1000M) 177 jme->reg_ghc |= GHC_TO_CLK_GPHY | GHC_TXMAC_CLK_GPHY; 178 else 179 jme->reg_ghc |= GHC_TO_CLK_PCIE | GHC_TXMAC_CLK_PCIE; 180 jwrite32f(jme, JME_GHC, jme->reg_ghc); 181 } 182 183 static inline void 184 jme_reset_ghc_speed(struct jme_adapter *jme) 185 { 186 jme->reg_ghc &= ~(GHC_SPEED | GHC_DPX); 187 jwrite32f(jme, JME_GHC, jme->reg_ghc); 188 } 189 190 static inline void 191 jme_reset_250A2_workaround(struct jme_adapter *jme) 192 { 193 jme->reg_gpreg1 &= ~(GPREG1_HALFMODEPATCH | 194 GPREG1_RSSPATCH); 195 jwrite32(jme, JME_GPREG1, jme->reg_gpreg1); 196 } 197 198 static inline void 199 jme_assert_ghc_reset(struct jme_adapter *jme) 200 { 201 jme->reg_ghc |= GHC_SWRST; 202 jwrite32f(jme, JME_GHC, jme->reg_ghc); 203 } 204 205 static inline void 206 jme_clear_ghc_reset(struct jme_adapter *jme) 207 { 208 jme->reg_ghc &= ~GHC_SWRST; 209 jwrite32f(jme, JME_GHC, jme->reg_ghc); 210 } 211 212 static void 213 jme_reset_mac_processor(struct jme_adapter *jme) 214 { 215 static const u32 mask[WAKEUP_FRAME_MASK_DWNR] = {0, 0, 0, 0}; 216 u32 crc = 0xCDCDCDCD; 217 u32 gpreg0; 218 int i; 219 220 jme_reset_ghc_speed(jme); 221 jme_reset_250A2_workaround(jme); 222 223 jme_mac_rxclk_on(jme); 224 jme_mac_txclk_on(jme); 225 udelay(1); 226 jme_assert_ghc_reset(jme); 227 udelay(1); 228 jme_mac_rxclk_off(jme); 229 jme_mac_txclk_off(jme); 230 udelay(1); 231 jme_clear_ghc_reset(jme); 232 udelay(1); 233 jme_mac_rxclk_on(jme); 234 jme_mac_txclk_on(jme); 235 udelay(1); 236 jme_mac_rxclk_off(jme); 237 jme_mac_txclk_off(jme); 238 239 jwrite32(jme, JME_RXDBA_LO, 0x00000000); 240 jwrite32(jme, JME_RXDBA_HI, 0x00000000); 241 jwrite32(jme, JME_RXQDC, 0x00000000); 242 jwrite32(jme, JME_RXNDA, 0x00000000); 243 jwrite32(jme, JME_TXDBA_LO, 0x00000000); 244 jwrite32(jme, JME_TXDBA_HI, 0x00000000); 245 jwrite32(jme, JME_TXQDC, 0x00000000); 246 jwrite32(jme, JME_TXNDA, 0x00000000); 247 248 jwrite32(jme, JME_RXMCHT_LO, 0x00000000); 249 jwrite32(jme, JME_RXMCHT_HI, 0x00000000); 250 for (i = 0 ; i < WAKEUP_FRAME_NR ; ++i) 251 jme_setup_wakeup_frame(jme, mask, crc, i); 252 if (jme->fpgaver) 253 gpreg0 = GPREG0_DEFAULT | GPREG0_LNKINTPOLL; 254 else 255 gpreg0 = GPREG0_DEFAULT; 256 jwrite32(jme, JME_GPREG0, gpreg0); 257 } 258 259 static inline void 260 jme_clear_pm_enable_wol(struct jme_adapter *jme) 261 { 262 jwrite32(jme, JME_PMCS, PMCS_STMASK | jme->reg_pmcs); 263 } 264 265 static inline void 266 jme_clear_pm_disable_wol(struct jme_adapter *jme) 267 { 268 jwrite32(jme, JME_PMCS, PMCS_STMASK); 269 } 270 271 static int 272 jme_reload_eeprom(struct jme_adapter *jme) 273 { 274 u32 val; 275 int i; 276 277 val = jread32(jme, JME_SMBCSR); 278 279 if (val & SMBCSR_EEPROMD) { 280 val |= SMBCSR_CNACK; 281 jwrite32(jme, JME_SMBCSR, val); 282 val |= SMBCSR_RELOAD; 283 jwrite32(jme, JME_SMBCSR, val); 284 mdelay(12); 285 286 for (i = JME_EEPROM_RELOAD_TIMEOUT; i > 0; --i) { 287 mdelay(1); 288 if ((jread32(jme, JME_SMBCSR) & SMBCSR_RELOAD) == 0) 289 break; 290 } 291 292 if (i == 0) { 293 pr_err("eeprom reload timeout\n"); 294 return -EIO; 295 } 296 } 297 298 return 0; 299 } 300 301 static void 302 jme_load_macaddr(struct net_device *netdev) 303 { 304 struct jme_adapter *jme = netdev_priv(netdev); 305 unsigned char macaddr[ETH_ALEN]; 306 u32 val; 307 308 spin_lock_bh(&jme->macaddr_lock); 309 val = jread32(jme, JME_RXUMA_LO); 310 macaddr[0] = (val >> 0) & 0xFF; 311 macaddr[1] = (val >> 8) & 0xFF; 312 macaddr[2] = (val >> 16) & 0xFF; 313 macaddr[3] = (val >> 24) & 0xFF; 314 val = jread32(jme, JME_RXUMA_HI); 315 macaddr[4] = (val >> 0) & 0xFF; 316 macaddr[5] = (val >> 8) & 0xFF; 317 memcpy(netdev->dev_addr, macaddr, ETH_ALEN); 318 spin_unlock_bh(&jme->macaddr_lock); 319 } 320 321 static inline void 322 jme_set_rx_pcc(struct jme_adapter *jme, int p) 323 { 324 switch (p) { 325 case PCC_OFF: 326 jwrite32(jme, JME_PCCRX0, 327 ((PCC_OFF_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) | 328 ((PCC_OFF_CNT << PCCRX_SHIFT) & PCCRX_MASK)); 329 break; 330 case PCC_P1: 331 jwrite32(jme, JME_PCCRX0, 332 ((PCC_P1_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) | 333 ((PCC_P1_CNT << PCCRX_SHIFT) & PCCRX_MASK)); 334 break; 335 case PCC_P2: 336 jwrite32(jme, JME_PCCRX0, 337 ((PCC_P2_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) | 338 ((PCC_P2_CNT << PCCRX_SHIFT) & PCCRX_MASK)); 339 break; 340 case PCC_P3: 341 jwrite32(jme, JME_PCCRX0, 342 ((PCC_P3_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) | 343 ((PCC_P3_CNT << PCCRX_SHIFT) & PCCRX_MASK)); 344 break; 345 default: 346 break; 347 } 348 wmb(); 349 350 if (!(test_bit(JME_FLAG_POLL, &jme->flags))) 351 netif_info(jme, rx_status, jme->dev, "Switched to PCC_P%d\n", p); 352 } 353 354 static void 355 jme_start_irq(struct jme_adapter *jme) 356 { 357 register struct dynpcc_info *dpi = &(jme->dpi); 358 359 jme_set_rx_pcc(jme, PCC_P1); 360 dpi->cur = PCC_P1; 361 dpi->attempt = PCC_P1; 362 dpi->cnt = 0; 363 364 jwrite32(jme, JME_PCCTX, 365 ((PCC_TX_TO << PCCTXTO_SHIFT) & PCCTXTO_MASK) | 366 ((PCC_TX_CNT << PCCTX_SHIFT) & PCCTX_MASK) | 367 PCCTXQ0_EN 368 ); 369 370 /* 371 * Enable Interrupts 372 */ 373 jwrite32(jme, JME_IENS, INTR_ENABLE); 374 } 375 376 static inline void 377 jme_stop_irq(struct jme_adapter *jme) 378 { 379 /* 380 * Disable Interrupts 381 */ 382 jwrite32f(jme, JME_IENC, INTR_ENABLE); 383 } 384 385 static u32 386 jme_linkstat_from_phy(struct jme_adapter *jme) 387 { 388 u32 phylink, bmsr; 389 390 phylink = jme_mdio_read(jme->dev, jme->mii_if.phy_id, 17); 391 bmsr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMSR); 392 if (bmsr & BMSR_ANCOMP) 393 phylink |= PHY_LINK_AUTONEG_COMPLETE; 394 395 return phylink; 396 } 397 398 static inline void 399 jme_set_phyfifo_5level(struct jme_adapter *jme) 400 { 401 jme_mdio_write(jme->dev, jme->mii_if.phy_id, 27, 0x0004); 402 } 403 404 static inline void 405 jme_set_phyfifo_8level(struct jme_adapter *jme) 406 { 407 jme_mdio_write(jme->dev, jme->mii_if.phy_id, 27, 0x0000); 408 } 409 410 static int 411 jme_check_link(struct net_device *netdev, int testonly) 412 { 413 struct jme_adapter *jme = netdev_priv(netdev); 414 u32 phylink, cnt = JME_SPDRSV_TIMEOUT, bmcr; 415 char linkmsg[64]; 416 int rc = 0; 417 418 linkmsg[0] = '\0'; 419 420 if (jme->fpgaver) 421 phylink = jme_linkstat_from_phy(jme); 422 else 423 phylink = jread32(jme, JME_PHY_LINK); 424 425 if (phylink & PHY_LINK_UP) { 426 if (!(phylink & PHY_LINK_AUTONEG_COMPLETE)) { 427 /* 428 * If we did not enable AN 429 * Speed/Duplex Info should be obtained from SMI 430 */ 431 phylink = PHY_LINK_UP; 432 433 bmcr = jme_mdio_read(jme->dev, 434 jme->mii_if.phy_id, 435 MII_BMCR); 436 437 phylink |= ((bmcr & BMCR_SPEED1000) && 438 (bmcr & BMCR_SPEED100) == 0) ? 439 PHY_LINK_SPEED_1000M : 440 (bmcr & BMCR_SPEED100) ? 441 PHY_LINK_SPEED_100M : 442 PHY_LINK_SPEED_10M; 443 444 phylink |= (bmcr & BMCR_FULLDPLX) ? 445 PHY_LINK_DUPLEX : 0; 446 447 strcat(linkmsg, "Forced: "); 448 } else { 449 /* 450 * Keep polling for speed/duplex resolve complete 451 */ 452 while (!(phylink & PHY_LINK_SPEEDDPU_RESOLVED) && 453 --cnt) { 454 455 udelay(1); 456 457 if (jme->fpgaver) 458 phylink = jme_linkstat_from_phy(jme); 459 else 460 phylink = jread32(jme, JME_PHY_LINK); 461 } 462 if (!cnt) 463 pr_err("Waiting speed resolve timeout\n"); 464 465 strcat(linkmsg, "ANed: "); 466 } 467 468 if (jme->phylink == phylink) { 469 rc = 1; 470 goto out; 471 } 472 if (testonly) 473 goto out; 474 475 jme->phylink = phylink; 476 477 /* 478 * The speed/duplex setting of jme->reg_ghc already cleared 479 * by jme_reset_mac_processor() 480 */ 481 switch (phylink & PHY_LINK_SPEED_MASK) { 482 case PHY_LINK_SPEED_10M: 483 jme->reg_ghc |= GHC_SPEED_10M; 484 strcat(linkmsg, "10 Mbps, "); 485 break; 486 case PHY_LINK_SPEED_100M: 487 jme->reg_ghc |= GHC_SPEED_100M; 488 strcat(linkmsg, "100 Mbps, "); 489 break; 490 case PHY_LINK_SPEED_1000M: 491 jme->reg_ghc |= GHC_SPEED_1000M; 492 strcat(linkmsg, "1000 Mbps, "); 493 break; 494 default: 495 break; 496 } 497 498 if (phylink & PHY_LINK_DUPLEX) { 499 jwrite32(jme, JME_TXMCS, TXMCS_DEFAULT); 500 jwrite32(jme, JME_TXTRHD, TXTRHD_FULLDUPLEX); 501 jme->reg_ghc |= GHC_DPX; 502 } else { 503 jwrite32(jme, JME_TXMCS, TXMCS_DEFAULT | 504 TXMCS_BACKOFF | 505 TXMCS_CARRIERSENSE | 506 TXMCS_COLLISION); 507 jwrite32(jme, JME_TXTRHD, TXTRHD_HALFDUPLEX); 508 } 509 510 jwrite32(jme, JME_GHC, jme->reg_ghc); 511 512 if (is_buggy250(jme->pdev->device, jme->chiprev)) { 513 jme->reg_gpreg1 &= ~(GPREG1_HALFMODEPATCH | 514 GPREG1_RSSPATCH); 515 if (!(phylink & PHY_LINK_DUPLEX)) 516 jme->reg_gpreg1 |= GPREG1_HALFMODEPATCH; 517 switch (phylink & PHY_LINK_SPEED_MASK) { 518 case PHY_LINK_SPEED_10M: 519 jme_set_phyfifo_8level(jme); 520 jme->reg_gpreg1 |= GPREG1_RSSPATCH; 521 break; 522 case PHY_LINK_SPEED_100M: 523 jme_set_phyfifo_5level(jme); 524 jme->reg_gpreg1 |= GPREG1_RSSPATCH; 525 break; 526 case PHY_LINK_SPEED_1000M: 527 jme_set_phyfifo_8level(jme); 528 break; 529 default: 530 break; 531 } 532 } 533 jwrite32(jme, JME_GPREG1, jme->reg_gpreg1); 534 535 strcat(linkmsg, (phylink & PHY_LINK_DUPLEX) ? 536 "Full-Duplex, " : 537 "Half-Duplex, "); 538 strcat(linkmsg, (phylink & PHY_LINK_MDI_STAT) ? 539 "MDI-X" : 540 "MDI"); 541 netif_info(jme, link, jme->dev, "Link is up at %s\n", linkmsg); 542 netif_carrier_on(netdev); 543 } else { 544 if (testonly) 545 goto out; 546 547 netif_info(jme, link, jme->dev, "Link is down\n"); 548 jme->phylink = 0; 549 netif_carrier_off(netdev); 550 } 551 552 out: 553 return rc; 554 } 555 556 static int 557 jme_setup_tx_resources(struct jme_adapter *jme) 558 { 559 struct jme_ring *txring = &(jme->txring[0]); 560 561 txring->alloc = dma_alloc_coherent(&(jme->pdev->dev), 562 TX_RING_ALLOC_SIZE(jme->tx_ring_size), 563 &(txring->dmaalloc), 564 GFP_ATOMIC); 565 566 if (!txring->alloc) 567 goto err_set_null; 568 569 /* 570 * 16 Bytes align 571 */ 572 txring->desc = (void *)ALIGN((unsigned long)(txring->alloc), 573 RING_DESC_ALIGN); 574 txring->dma = ALIGN(txring->dmaalloc, RING_DESC_ALIGN); 575 txring->next_to_use = 0; 576 atomic_set(&txring->next_to_clean, 0); 577 atomic_set(&txring->nr_free, jme->tx_ring_size); 578 579 txring->bufinf = kcalloc(jme->tx_ring_size, 580 sizeof(struct jme_buffer_info), 581 GFP_ATOMIC); 582 if (unlikely(!(txring->bufinf))) 583 goto err_free_txring; 584 585 return 0; 586 587 err_free_txring: 588 dma_free_coherent(&(jme->pdev->dev), 589 TX_RING_ALLOC_SIZE(jme->tx_ring_size), 590 txring->alloc, 591 txring->dmaalloc); 592 593 err_set_null: 594 txring->desc = NULL; 595 txring->dmaalloc = 0; 596 txring->dma = 0; 597 txring->bufinf = NULL; 598 599 return -ENOMEM; 600 } 601 602 static void 603 jme_free_tx_resources(struct jme_adapter *jme) 604 { 605 int i; 606 struct jme_ring *txring = &(jme->txring[0]); 607 struct jme_buffer_info *txbi; 608 609 if (txring->alloc) { 610 if (txring->bufinf) { 611 for (i = 0 ; i < jme->tx_ring_size ; ++i) { 612 txbi = txring->bufinf + i; 613 if (txbi->skb) { 614 dev_kfree_skb(txbi->skb); 615 txbi->skb = NULL; 616 } 617 txbi->mapping = 0; 618 txbi->len = 0; 619 txbi->nr_desc = 0; 620 txbi->start_xmit = 0; 621 } 622 kfree(txring->bufinf); 623 } 624 625 dma_free_coherent(&(jme->pdev->dev), 626 TX_RING_ALLOC_SIZE(jme->tx_ring_size), 627 txring->alloc, 628 txring->dmaalloc); 629 630 txring->alloc = NULL; 631 txring->desc = NULL; 632 txring->dmaalloc = 0; 633 txring->dma = 0; 634 txring->bufinf = NULL; 635 } 636 txring->next_to_use = 0; 637 atomic_set(&txring->next_to_clean, 0); 638 atomic_set(&txring->nr_free, 0); 639 } 640 641 static inline void 642 jme_enable_tx_engine(struct jme_adapter *jme) 643 { 644 /* 645 * Select Queue 0 646 */ 647 jwrite32(jme, JME_TXCS, TXCS_DEFAULT | TXCS_SELECT_QUEUE0); 648 wmb(); 649 650 /* 651 * Setup TX Queue 0 DMA Bass Address 652 */ 653 jwrite32(jme, JME_TXDBA_LO, (__u64)jme->txring[0].dma & 0xFFFFFFFFUL); 654 jwrite32(jme, JME_TXDBA_HI, (__u64)(jme->txring[0].dma) >> 32); 655 jwrite32(jme, JME_TXNDA, (__u64)jme->txring[0].dma & 0xFFFFFFFFUL); 656 657 /* 658 * Setup TX Descptor Count 659 */ 660 jwrite32(jme, JME_TXQDC, jme->tx_ring_size); 661 662 /* 663 * Enable TX Engine 664 */ 665 wmb(); 666 jwrite32f(jme, JME_TXCS, jme->reg_txcs | 667 TXCS_SELECT_QUEUE0 | 668 TXCS_ENABLE); 669 670 /* 671 * Start clock for TX MAC Processor 672 */ 673 jme_mac_txclk_on(jme); 674 } 675 676 static inline void 677 jme_disable_tx_engine(struct jme_adapter *jme) 678 { 679 int i; 680 u32 val; 681 682 /* 683 * Disable TX Engine 684 */ 685 jwrite32(jme, JME_TXCS, jme->reg_txcs | TXCS_SELECT_QUEUE0); 686 wmb(); 687 688 val = jread32(jme, JME_TXCS); 689 for (i = JME_TX_DISABLE_TIMEOUT ; (val & TXCS_ENABLE) && i > 0 ; --i) { 690 mdelay(1); 691 val = jread32(jme, JME_TXCS); 692 rmb(); 693 } 694 695 if (!i) 696 pr_err("Disable TX engine timeout\n"); 697 698 /* 699 * Stop clock for TX MAC Processor 700 */ 701 jme_mac_txclk_off(jme); 702 } 703 704 static void 705 jme_set_clean_rxdesc(struct jme_adapter *jme, int i) 706 { 707 struct jme_ring *rxring = &(jme->rxring[0]); 708 register struct rxdesc *rxdesc = rxring->desc; 709 struct jme_buffer_info *rxbi = rxring->bufinf; 710 rxdesc += i; 711 rxbi += i; 712 713 rxdesc->dw[0] = 0; 714 rxdesc->dw[1] = 0; 715 rxdesc->desc1.bufaddrh = cpu_to_le32((__u64)rxbi->mapping >> 32); 716 rxdesc->desc1.bufaddrl = cpu_to_le32( 717 (__u64)rxbi->mapping & 0xFFFFFFFFUL); 718 rxdesc->desc1.datalen = cpu_to_le16(rxbi->len); 719 if (jme->dev->features & NETIF_F_HIGHDMA) 720 rxdesc->desc1.flags = RXFLAG_64BIT; 721 wmb(); 722 rxdesc->desc1.flags |= RXFLAG_OWN | RXFLAG_INT; 723 } 724 725 static int 726 jme_make_new_rx_buf(struct jme_adapter *jme, int i) 727 { 728 struct jme_ring *rxring = &(jme->rxring[0]); 729 struct jme_buffer_info *rxbi = rxring->bufinf + i; 730 struct sk_buff *skb; 731 dma_addr_t mapping; 732 733 skb = netdev_alloc_skb(jme->dev, 734 jme->dev->mtu + RX_EXTRA_LEN); 735 if (unlikely(!skb)) 736 return -ENOMEM; 737 738 mapping = pci_map_page(jme->pdev, virt_to_page(skb->data), 739 offset_in_page(skb->data), skb_tailroom(skb), 740 PCI_DMA_FROMDEVICE); 741 if (unlikely(pci_dma_mapping_error(jme->pdev, mapping))) { 742 dev_kfree_skb(skb); 743 return -ENOMEM; 744 } 745 746 if (likely(rxbi->mapping)) 747 pci_unmap_page(jme->pdev, rxbi->mapping, 748 rxbi->len, PCI_DMA_FROMDEVICE); 749 750 rxbi->skb = skb; 751 rxbi->len = skb_tailroom(skb); 752 rxbi->mapping = mapping; 753 return 0; 754 } 755 756 static void 757 jme_free_rx_buf(struct jme_adapter *jme, int i) 758 { 759 struct jme_ring *rxring = &(jme->rxring[0]); 760 struct jme_buffer_info *rxbi = rxring->bufinf; 761 rxbi += i; 762 763 if (rxbi->skb) { 764 pci_unmap_page(jme->pdev, 765 rxbi->mapping, 766 rxbi->len, 767 PCI_DMA_FROMDEVICE); 768 dev_kfree_skb(rxbi->skb); 769 rxbi->skb = NULL; 770 rxbi->mapping = 0; 771 rxbi->len = 0; 772 } 773 } 774 775 static void 776 jme_free_rx_resources(struct jme_adapter *jme) 777 { 778 int i; 779 struct jme_ring *rxring = &(jme->rxring[0]); 780 781 if (rxring->alloc) { 782 if (rxring->bufinf) { 783 for (i = 0 ; i < jme->rx_ring_size ; ++i) 784 jme_free_rx_buf(jme, i); 785 kfree(rxring->bufinf); 786 } 787 788 dma_free_coherent(&(jme->pdev->dev), 789 RX_RING_ALLOC_SIZE(jme->rx_ring_size), 790 rxring->alloc, 791 rxring->dmaalloc); 792 rxring->alloc = NULL; 793 rxring->desc = NULL; 794 rxring->dmaalloc = 0; 795 rxring->dma = 0; 796 rxring->bufinf = NULL; 797 } 798 rxring->next_to_use = 0; 799 atomic_set(&rxring->next_to_clean, 0); 800 } 801 802 static int 803 jme_setup_rx_resources(struct jme_adapter *jme) 804 { 805 int i; 806 struct jme_ring *rxring = &(jme->rxring[0]); 807 808 rxring->alloc = dma_alloc_coherent(&(jme->pdev->dev), 809 RX_RING_ALLOC_SIZE(jme->rx_ring_size), 810 &(rxring->dmaalloc), 811 GFP_ATOMIC); 812 if (!rxring->alloc) 813 goto err_set_null; 814 815 /* 816 * 16 Bytes align 817 */ 818 rxring->desc = (void *)ALIGN((unsigned long)(rxring->alloc), 819 RING_DESC_ALIGN); 820 rxring->dma = ALIGN(rxring->dmaalloc, RING_DESC_ALIGN); 821 rxring->next_to_use = 0; 822 atomic_set(&rxring->next_to_clean, 0); 823 824 rxring->bufinf = kcalloc(jme->rx_ring_size, 825 sizeof(struct jme_buffer_info), 826 GFP_ATOMIC); 827 if (unlikely(!(rxring->bufinf))) 828 goto err_free_rxring; 829 830 /* 831 * Initiallize Receive Descriptors 832 */ 833 for (i = 0 ; i < jme->rx_ring_size ; ++i) { 834 if (unlikely(jme_make_new_rx_buf(jme, i))) { 835 jme_free_rx_resources(jme); 836 return -ENOMEM; 837 } 838 839 jme_set_clean_rxdesc(jme, i); 840 } 841 842 return 0; 843 844 err_free_rxring: 845 dma_free_coherent(&(jme->pdev->dev), 846 RX_RING_ALLOC_SIZE(jme->rx_ring_size), 847 rxring->alloc, 848 rxring->dmaalloc); 849 err_set_null: 850 rxring->desc = NULL; 851 rxring->dmaalloc = 0; 852 rxring->dma = 0; 853 rxring->bufinf = NULL; 854 855 return -ENOMEM; 856 } 857 858 static inline void 859 jme_enable_rx_engine(struct jme_adapter *jme) 860 { 861 /* 862 * Select Queue 0 863 */ 864 jwrite32(jme, JME_RXCS, jme->reg_rxcs | 865 RXCS_QUEUESEL_Q0); 866 wmb(); 867 868 /* 869 * Setup RX DMA Bass Address 870 */ 871 jwrite32(jme, JME_RXDBA_LO, (__u64)(jme->rxring[0].dma) & 0xFFFFFFFFUL); 872 jwrite32(jme, JME_RXDBA_HI, (__u64)(jme->rxring[0].dma) >> 32); 873 jwrite32(jme, JME_RXNDA, (__u64)(jme->rxring[0].dma) & 0xFFFFFFFFUL); 874 875 /* 876 * Setup RX Descriptor Count 877 */ 878 jwrite32(jme, JME_RXQDC, jme->rx_ring_size); 879 880 /* 881 * Setup Unicast Filter 882 */ 883 jme_set_unicastaddr(jme->dev); 884 jme_set_multi(jme->dev); 885 886 /* 887 * Enable RX Engine 888 */ 889 wmb(); 890 jwrite32f(jme, JME_RXCS, jme->reg_rxcs | 891 RXCS_QUEUESEL_Q0 | 892 RXCS_ENABLE | 893 RXCS_QST); 894 895 /* 896 * Start clock for RX MAC Processor 897 */ 898 jme_mac_rxclk_on(jme); 899 } 900 901 static inline void 902 jme_restart_rx_engine(struct jme_adapter *jme) 903 { 904 /* 905 * Start RX Engine 906 */ 907 jwrite32(jme, JME_RXCS, jme->reg_rxcs | 908 RXCS_QUEUESEL_Q0 | 909 RXCS_ENABLE | 910 RXCS_QST); 911 } 912 913 static inline void 914 jme_disable_rx_engine(struct jme_adapter *jme) 915 { 916 int i; 917 u32 val; 918 919 /* 920 * Disable RX Engine 921 */ 922 jwrite32(jme, JME_RXCS, jme->reg_rxcs); 923 wmb(); 924 925 val = jread32(jme, JME_RXCS); 926 for (i = JME_RX_DISABLE_TIMEOUT ; (val & RXCS_ENABLE) && i > 0 ; --i) { 927 mdelay(1); 928 val = jread32(jme, JME_RXCS); 929 rmb(); 930 } 931 932 if (!i) 933 pr_err("Disable RX engine timeout\n"); 934 935 /* 936 * Stop clock for RX MAC Processor 937 */ 938 jme_mac_rxclk_off(jme); 939 } 940 941 static u16 942 jme_udpsum(struct sk_buff *skb) 943 { 944 u16 csum = 0xFFFFu; 945 946 if (skb->len < (ETH_HLEN + sizeof(struct iphdr))) 947 return csum; 948 if (skb->protocol != htons(ETH_P_IP)) 949 return csum; 950 skb_set_network_header(skb, ETH_HLEN); 951 if ((ip_hdr(skb)->protocol != IPPROTO_UDP) || 952 (skb->len < (ETH_HLEN + 953 (ip_hdr(skb)->ihl << 2) + 954 sizeof(struct udphdr)))) { 955 skb_reset_network_header(skb); 956 return csum; 957 } 958 skb_set_transport_header(skb, 959 ETH_HLEN + (ip_hdr(skb)->ihl << 2)); 960 csum = udp_hdr(skb)->check; 961 skb_reset_transport_header(skb); 962 skb_reset_network_header(skb); 963 964 return csum; 965 } 966 967 static int 968 jme_rxsum_ok(struct jme_adapter *jme, u16 flags, struct sk_buff *skb) 969 { 970 if (!(flags & (RXWBFLAG_TCPON | RXWBFLAG_UDPON | RXWBFLAG_IPV4))) 971 return false; 972 973 if (unlikely((flags & (RXWBFLAG_MF | RXWBFLAG_TCPON | RXWBFLAG_TCPCS)) 974 == RXWBFLAG_TCPON)) { 975 if (flags & RXWBFLAG_IPV4) 976 netif_err(jme, rx_err, jme->dev, "TCP Checksum error\n"); 977 return false; 978 } 979 980 if (unlikely((flags & (RXWBFLAG_MF | RXWBFLAG_UDPON | RXWBFLAG_UDPCS)) 981 == RXWBFLAG_UDPON) && jme_udpsum(skb)) { 982 if (flags & RXWBFLAG_IPV4) 983 netif_err(jme, rx_err, jme->dev, "UDP Checksum error\n"); 984 return false; 985 } 986 987 if (unlikely((flags & (RXWBFLAG_IPV4 | RXWBFLAG_IPCS)) 988 == RXWBFLAG_IPV4)) { 989 netif_err(jme, rx_err, jme->dev, "IPv4 Checksum error\n"); 990 return false; 991 } 992 993 return true; 994 } 995 996 static void 997 jme_alloc_and_feed_skb(struct jme_adapter *jme, int idx) 998 { 999 struct jme_ring *rxring = &(jme->rxring[0]); 1000 struct rxdesc *rxdesc = rxring->desc; 1001 struct jme_buffer_info *rxbi = rxring->bufinf; 1002 struct sk_buff *skb; 1003 int framesize; 1004 1005 rxdesc += idx; 1006 rxbi += idx; 1007 1008 skb = rxbi->skb; 1009 pci_dma_sync_single_for_cpu(jme->pdev, 1010 rxbi->mapping, 1011 rxbi->len, 1012 PCI_DMA_FROMDEVICE); 1013 1014 if (unlikely(jme_make_new_rx_buf(jme, idx))) { 1015 pci_dma_sync_single_for_device(jme->pdev, 1016 rxbi->mapping, 1017 rxbi->len, 1018 PCI_DMA_FROMDEVICE); 1019 1020 ++(NET_STAT(jme).rx_dropped); 1021 } else { 1022 framesize = le16_to_cpu(rxdesc->descwb.framesize) 1023 - RX_PREPAD_SIZE; 1024 1025 skb_reserve(skb, RX_PREPAD_SIZE); 1026 skb_put(skb, framesize); 1027 skb->protocol = eth_type_trans(skb, jme->dev); 1028 1029 if (jme_rxsum_ok(jme, le16_to_cpu(rxdesc->descwb.flags), skb)) 1030 skb->ip_summed = CHECKSUM_UNNECESSARY; 1031 else 1032 skb_checksum_none_assert(skb); 1033 1034 if (rxdesc->descwb.flags & cpu_to_le16(RXWBFLAG_TAGON)) { 1035 u16 vid = le16_to_cpu(rxdesc->descwb.vlan); 1036 1037 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid); 1038 NET_STAT(jme).rx_bytes += 4; 1039 } 1040 jme->jme_rx(skb); 1041 1042 if ((rxdesc->descwb.flags & cpu_to_le16(RXWBFLAG_DEST)) == 1043 cpu_to_le16(RXWBFLAG_DEST_MUL)) 1044 ++(NET_STAT(jme).multicast); 1045 1046 NET_STAT(jme).rx_bytes += framesize; 1047 ++(NET_STAT(jme).rx_packets); 1048 } 1049 1050 jme_set_clean_rxdesc(jme, idx); 1051 1052 } 1053 1054 static int 1055 jme_process_receive(struct jme_adapter *jme, int limit) 1056 { 1057 struct jme_ring *rxring = &(jme->rxring[0]); 1058 struct rxdesc *rxdesc; 1059 int i, j, ccnt, desccnt, mask = jme->rx_ring_mask; 1060 1061 if (unlikely(!atomic_dec_and_test(&jme->rx_cleaning))) 1062 goto out_inc; 1063 1064 if (unlikely(atomic_read(&jme->link_changing) != 1)) 1065 goto out_inc; 1066 1067 if (unlikely(!netif_carrier_ok(jme->dev))) 1068 goto out_inc; 1069 1070 i = atomic_read(&rxring->next_to_clean); 1071 while (limit > 0) { 1072 rxdesc = rxring->desc; 1073 rxdesc += i; 1074 1075 if ((rxdesc->descwb.flags & cpu_to_le16(RXWBFLAG_OWN)) || 1076 !(rxdesc->descwb.desccnt & RXWBDCNT_WBCPL)) 1077 goto out; 1078 --limit; 1079 1080 rmb(); 1081 desccnt = rxdesc->descwb.desccnt & RXWBDCNT_DCNT; 1082 1083 if (unlikely(desccnt > 1 || 1084 rxdesc->descwb.errstat & RXWBERR_ALLERR)) { 1085 1086 if (rxdesc->descwb.errstat & RXWBERR_CRCERR) 1087 ++(NET_STAT(jme).rx_crc_errors); 1088 else if (rxdesc->descwb.errstat & RXWBERR_OVERUN) 1089 ++(NET_STAT(jme).rx_fifo_errors); 1090 else 1091 ++(NET_STAT(jme).rx_errors); 1092 1093 if (desccnt > 1) 1094 limit -= desccnt - 1; 1095 1096 for (j = i, ccnt = desccnt ; ccnt-- ; ) { 1097 jme_set_clean_rxdesc(jme, j); 1098 j = (j + 1) & (mask); 1099 } 1100 1101 } else { 1102 jme_alloc_and_feed_skb(jme, i); 1103 } 1104 1105 i = (i + desccnt) & (mask); 1106 } 1107 1108 out: 1109 atomic_set(&rxring->next_to_clean, i); 1110 1111 out_inc: 1112 atomic_inc(&jme->rx_cleaning); 1113 1114 return limit > 0 ? limit : 0; 1115 1116 } 1117 1118 static void 1119 jme_attempt_pcc(struct dynpcc_info *dpi, int atmp) 1120 { 1121 if (likely(atmp == dpi->cur)) { 1122 dpi->cnt = 0; 1123 return; 1124 } 1125 1126 if (dpi->attempt == atmp) { 1127 ++(dpi->cnt); 1128 } else { 1129 dpi->attempt = atmp; 1130 dpi->cnt = 0; 1131 } 1132 1133 } 1134 1135 static void 1136 jme_dynamic_pcc(struct jme_adapter *jme) 1137 { 1138 register struct dynpcc_info *dpi = &(jme->dpi); 1139 1140 if ((NET_STAT(jme).rx_bytes - dpi->last_bytes) > PCC_P3_THRESHOLD) 1141 jme_attempt_pcc(dpi, PCC_P3); 1142 else if ((NET_STAT(jme).rx_packets - dpi->last_pkts) > PCC_P2_THRESHOLD || 1143 dpi->intr_cnt > PCC_INTR_THRESHOLD) 1144 jme_attempt_pcc(dpi, PCC_P2); 1145 else 1146 jme_attempt_pcc(dpi, PCC_P1); 1147 1148 if (unlikely(dpi->attempt != dpi->cur && dpi->cnt > 5)) { 1149 if (dpi->attempt < dpi->cur) 1150 tasklet_schedule(&jme->rxclean_task); 1151 jme_set_rx_pcc(jme, dpi->attempt); 1152 dpi->cur = dpi->attempt; 1153 dpi->cnt = 0; 1154 } 1155 } 1156 1157 static void 1158 jme_start_pcc_timer(struct jme_adapter *jme) 1159 { 1160 struct dynpcc_info *dpi = &(jme->dpi); 1161 dpi->last_bytes = NET_STAT(jme).rx_bytes; 1162 dpi->last_pkts = NET_STAT(jme).rx_packets; 1163 dpi->intr_cnt = 0; 1164 jwrite32(jme, JME_TMCSR, 1165 TMCSR_EN | ((0xFFFFFF - PCC_INTERVAL_US) & TMCSR_CNT)); 1166 } 1167 1168 static inline void 1169 jme_stop_pcc_timer(struct jme_adapter *jme) 1170 { 1171 jwrite32(jme, JME_TMCSR, 0); 1172 } 1173 1174 static void 1175 jme_shutdown_nic(struct jme_adapter *jme) 1176 { 1177 u32 phylink; 1178 1179 phylink = jme_linkstat_from_phy(jme); 1180 1181 if (!(phylink & PHY_LINK_UP)) { 1182 /* 1183 * Disable all interrupt before issue timer 1184 */ 1185 jme_stop_irq(jme); 1186 jwrite32(jme, JME_TIMER2, TMCSR_EN | 0xFFFFFE); 1187 } 1188 } 1189 1190 static void 1191 jme_pcc_tasklet(unsigned long arg) 1192 { 1193 struct jme_adapter *jme = (struct jme_adapter *)arg; 1194 struct net_device *netdev = jme->dev; 1195 1196 if (unlikely(test_bit(JME_FLAG_SHUTDOWN, &jme->flags))) { 1197 jme_shutdown_nic(jme); 1198 return; 1199 } 1200 1201 if (unlikely(!netif_carrier_ok(netdev) || 1202 (atomic_read(&jme->link_changing) != 1) 1203 )) { 1204 jme_stop_pcc_timer(jme); 1205 return; 1206 } 1207 1208 if (!(test_bit(JME_FLAG_POLL, &jme->flags))) 1209 jme_dynamic_pcc(jme); 1210 1211 jme_start_pcc_timer(jme); 1212 } 1213 1214 static inline void 1215 jme_polling_mode(struct jme_adapter *jme) 1216 { 1217 jme_set_rx_pcc(jme, PCC_OFF); 1218 } 1219 1220 static inline void 1221 jme_interrupt_mode(struct jme_adapter *jme) 1222 { 1223 jme_set_rx_pcc(jme, PCC_P1); 1224 } 1225 1226 static inline int 1227 jme_pseudo_hotplug_enabled(struct jme_adapter *jme) 1228 { 1229 u32 apmc; 1230 apmc = jread32(jme, JME_APMC); 1231 return apmc & JME_APMC_PSEUDO_HP_EN; 1232 } 1233 1234 static void 1235 jme_start_shutdown_timer(struct jme_adapter *jme) 1236 { 1237 u32 apmc; 1238 1239 apmc = jread32(jme, JME_APMC) | JME_APMC_PCIE_SD_EN; 1240 apmc &= ~JME_APMC_EPIEN_CTRL; 1241 if (!no_extplug) { 1242 jwrite32f(jme, JME_APMC, apmc | JME_APMC_EPIEN_CTRL_EN); 1243 wmb(); 1244 } 1245 jwrite32f(jme, JME_APMC, apmc); 1246 1247 jwrite32f(jme, JME_TIMER2, 0); 1248 set_bit(JME_FLAG_SHUTDOWN, &jme->flags); 1249 jwrite32(jme, JME_TMCSR, 1250 TMCSR_EN | ((0xFFFFFF - APMC_PHP_SHUTDOWN_DELAY) & TMCSR_CNT)); 1251 } 1252 1253 static void 1254 jme_stop_shutdown_timer(struct jme_adapter *jme) 1255 { 1256 u32 apmc; 1257 1258 jwrite32f(jme, JME_TMCSR, 0); 1259 jwrite32f(jme, JME_TIMER2, 0); 1260 clear_bit(JME_FLAG_SHUTDOWN, &jme->flags); 1261 1262 apmc = jread32(jme, JME_APMC); 1263 apmc &= ~(JME_APMC_PCIE_SD_EN | JME_APMC_EPIEN_CTRL); 1264 jwrite32f(jme, JME_APMC, apmc | JME_APMC_EPIEN_CTRL_DIS); 1265 wmb(); 1266 jwrite32f(jme, JME_APMC, apmc); 1267 } 1268 1269 static void 1270 jme_link_change_tasklet(unsigned long arg) 1271 { 1272 struct jme_adapter *jme = (struct jme_adapter *)arg; 1273 struct net_device *netdev = jme->dev; 1274 int rc; 1275 1276 while (!atomic_dec_and_test(&jme->link_changing)) { 1277 atomic_inc(&jme->link_changing); 1278 netif_info(jme, intr, jme->dev, "Get link change lock failed\n"); 1279 while (atomic_read(&jme->link_changing) != 1) 1280 netif_info(jme, intr, jme->dev, "Waiting link change lock\n"); 1281 } 1282 1283 if (jme_check_link(netdev, 1) && jme->old_mtu == netdev->mtu) 1284 goto out; 1285 1286 jme->old_mtu = netdev->mtu; 1287 netif_stop_queue(netdev); 1288 if (jme_pseudo_hotplug_enabled(jme)) 1289 jme_stop_shutdown_timer(jme); 1290 1291 jme_stop_pcc_timer(jme); 1292 tasklet_disable(&jme->txclean_task); 1293 tasklet_disable(&jme->rxclean_task); 1294 tasklet_disable(&jme->rxempty_task); 1295 1296 if (netif_carrier_ok(netdev)) { 1297 jme_disable_rx_engine(jme); 1298 jme_disable_tx_engine(jme); 1299 jme_reset_mac_processor(jme); 1300 jme_free_rx_resources(jme); 1301 jme_free_tx_resources(jme); 1302 1303 if (test_bit(JME_FLAG_POLL, &jme->flags)) 1304 jme_polling_mode(jme); 1305 1306 netif_carrier_off(netdev); 1307 } 1308 1309 jme_check_link(netdev, 0); 1310 if (netif_carrier_ok(netdev)) { 1311 rc = jme_setup_rx_resources(jme); 1312 if (rc) { 1313 pr_err("Allocating resources for RX error, Device STOPPED!\n"); 1314 goto out_enable_tasklet; 1315 } 1316 1317 rc = jme_setup_tx_resources(jme); 1318 if (rc) { 1319 pr_err("Allocating resources for TX error, Device STOPPED!\n"); 1320 goto err_out_free_rx_resources; 1321 } 1322 1323 jme_enable_rx_engine(jme); 1324 jme_enable_tx_engine(jme); 1325 1326 netif_start_queue(netdev); 1327 1328 if (test_bit(JME_FLAG_POLL, &jme->flags)) 1329 jme_interrupt_mode(jme); 1330 1331 jme_start_pcc_timer(jme); 1332 } else if (jme_pseudo_hotplug_enabled(jme)) { 1333 jme_start_shutdown_timer(jme); 1334 } 1335 1336 goto out_enable_tasklet; 1337 1338 err_out_free_rx_resources: 1339 jme_free_rx_resources(jme); 1340 out_enable_tasklet: 1341 tasklet_enable(&jme->txclean_task); 1342 tasklet_enable(&jme->rxclean_task); 1343 tasklet_enable(&jme->rxempty_task); 1344 out: 1345 atomic_inc(&jme->link_changing); 1346 } 1347 1348 static void 1349 jme_rx_clean_tasklet(unsigned long arg) 1350 { 1351 struct jme_adapter *jme = (struct jme_adapter *)arg; 1352 struct dynpcc_info *dpi = &(jme->dpi); 1353 1354 jme_process_receive(jme, jme->rx_ring_size); 1355 ++(dpi->intr_cnt); 1356 1357 } 1358 1359 static int 1360 jme_poll(JME_NAPI_HOLDER(holder), JME_NAPI_WEIGHT(budget)) 1361 { 1362 struct jme_adapter *jme = jme_napi_priv(holder); 1363 int rest; 1364 1365 rest = jme_process_receive(jme, JME_NAPI_WEIGHT_VAL(budget)); 1366 1367 while (atomic_read(&jme->rx_empty) > 0) { 1368 atomic_dec(&jme->rx_empty); 1369 ++(NET_STAT(jme).rx_dropped); 1370 jme_restart_rx_engine(jme); 1371 } 1372 atomic_inc(&jme->rx_empty); 1373 1374 if (rest) { 1375 JME_RX_COMPLETE(netdev, holder); 1376 jme_interrupt_mode(jme); 1377 } 1378 1379 JME_NAPI_WEIGHT_SET(budget, rest); 1380 return JME_NAPI_WEIGHT_VAL(budget) - rest; 1381 } 1382 1383 static void 1384 jme_rx_empty_tasklet(unsigned long arg) 1385 { 1386 struct jme_adapter *jme = (struct jme_adapter *)arg; 1387 1388 if (unlikely(atomic_read(&jme->link_changing) != 1)) 1389 return; 1390 1391 if (unlikely(!netif_carrier_ok(jme->dev))) 1392 return; 1393 1394 netif_info(jme, rx_status, jme->dev, "RX Queue Full!\n"); 1395 1396 jme_rx_clean_tasklet(arg); 1397 1398 while (atomic_read(&jme->rx_empty) > 0) { 1399 atomic_dec(&jme->rx_empty); 1400 ++(NET_STAT(jme).rx_dropped); 1401 jme_restart_rx_engine(jme); 1402 } 1403 atomic_inc(&jme->rx_empty); 1404 } 1405 1406 static void 1407 jme_wake_queue_if_stopped(struct jme_adapter *jme) 1408 { 1409 struct jme_ring *txring = &(jme->txring[0]); 1410 1411 smp_wmb(); 1412 if (unlikely(netif_queue_stopped(jme->dev) && 1413 atomic_read(&txring->nr_free) >= (jme->tx_wake_threshold))) { 1414 netif_info(jme, tx_done, jme->dev, "TX Queue Waked\n"); 1415 netif_wake_queue(jme->dev); 1416 } 1417 1418 } 1419 1420 static void 1421 jme_tx_clean_tasklet(unsigned long arg) 1422 { 1423 struct jme_adapter *jme = (struct jme_adapter *)arg; 1424 struct jme_ring *txring = &(jme->txring[0]); 1425 struct txdesc *txdesc = txring->desc; 1426 struct jme_buffer_info *txbi = txring->bufinf, *ctxbi, *ttxbi; 1427 int i, j, cnt = 0, max, err, mask; 1428 1429 tx_dbg(jme, "Into txclean\n"); 1430 1431 if (unlikely(!atomic_dec_and_test(&jme->tx_cleaning))) 1432 goto out; 1433 1434 if (unlikely(atomic_read(&jme->link_changing) != 1)) 1435 goto out; 1436 1437 if (unlikely(!netif_carrier_ok(jme->dev))) 1438 goto out; 1439 1440 max = jme->tx_ring_size - atomic_read(&txring->nr_free); 1441 mask = jme->tx_ring_mask; 1442 1443 for (i = atomic_read(&txring->next_to_clean) ; cnt < max ; ) { 1444 1445 ctxbi = txbi + i; 1446 1447 if (likely(ctxbi->skb && 1448 !(txdesc[i].descwb.flags & TXWBFLAG_OWN))) { 1449 1450 tx_dbg(jme, "txclean: %d+%d@%lu\n", 1451 i, ctxbi->nr_desc, jiffies); 1452 1453 err = txdesc[i].descwb.flags & TXWBFLAG_ALLERR; 1454 1455 for (j = 1 ; j < ctxbi->nr_desc ; ++j) { 1456 ttxbi = txbi + ((i + j) & (mask)); 1457 txdesc[(i + j) & (mask)].dw[0] = 0; 1458 1459 pci_unmap_page(jme->pdev, 1460 ttxbi->mapping, 1461 ttxbi->len, 1462 PCI_DMA_TODEVICE); 1463 1464 ttxbi->mapping = 0; 1465 ttxbi->len = 0; 1466 } 1467 1468 dev_kfree_skb(ctxbi->skb); 1469 1470 cnt += ctxbi->nr_desc; 1471 1472 if (unlikely(err)) { 1473 ++(NET_STAT(jme).tx_carrier_errors); 1474 } else { 1475 ++(NET_STAT(jme).tx_packets); 1476 NET_STAT(jme).tx_bytes += ctxbi->len; 1477 } 1478 1479 ctxbi->skb = NULL; 1480 ctxbi->len = 0; 1481 ctxbi->start_xmit = 0; 1482 1483 } else { 1484 break; 1485 } 1486 1487 i = (i + ctxbi->nr_desc) & mask; 1488 1489 ctxbi->nr_desc = 0; 1490 } 1491 1492 tx_dbg(jme, "txclean: done %d@%lu\n", i, jiffies); 1493 atomic_set(&txring->next_to_clean, i); 1494 atomic_add(cnt, &txring->nr_free); 1495 1496 jme_wake_queue_if_stopped(jme); 1497 1498 out: 1499 atomic_inc(&jme->tx_cleaning); 1500 } 1501 1502 static void 1503 jme_intr_msi(struct jme_adapter *jme, u32 intrstat) 1504 { 1505 /* 1506 * Disable interrupt 1507 */ 1508 jwrite32f(jme, JME_IENC, INTR_ENABLE); 1509 1510 if (intrstat & (INTR_LINKCH | INTR_SWINTR)) { 1511 /* 1512 * Link change event is critical 1513 * all other events are ignored 1514 */ 1515 jwrite32(jme, JME_IEVE, intrstat); 1516 tasklet_schedule(&jme->linkch_task); 1517 goto out_reenable; 1518 } 1519 1520 if (intrstat & INTR_TMINTR) { 1521 jwrite32(jme, JME_IEVE, INTR_TMINTR); 1522 tasklet_schedule(&jme->pcc_task); 1523 } 1524 1525 if (intrstat & (INTR_PCCTXTO | INTR_PCCTX)) { 1526 jwrite32(jme, JME_IEVE, INTR_PCCTXTO | INTR_PCCTX | INTR_TX0); 1527 tasklet_schedule(&jme->txclean_task); 1528 } 1529 1530 if ((intrstat & (INTR_PCCRX0TO | INTR_PCCRX0 | INTR_RX0EMP))) { 1531 jwrite32(jme, JME_IEVE, (intrstat & (INTR_PCCRX0TO | 1532 INTR_PCCRX0 | 1533 INTR_RX0EMP)) | 1534 INTR_RX0); 1535 } 1536 1537 if (test_bit(JME_FLAG_POLL, &jme->flags)) { 1538 if (intrstat & INTR_RX0EMP) 1539 atomic_inc(&jme->rx_empty); 1540 1541 if ((intrstat & (INTR_PCCRX0TO | INTR_PCCRX0 | INTR_RX0EMP))) { 1542 if (likely(JME_RX_SCHEDULE_PREP(jme))) { 1543 jme_polling_mode(jme); 1544 JME_RX_SCHEDULE(jme); 1545 } 1546 } 1547 } else { 1548 if (intrstat & INTR_RX0EMP) { 1549 atomic_inc(&jme->rx_empty); 1550 tasklet_hi_schedule(&jme->rxempty_task); 1551 } else if (intrstat & (INTR_PCCRX0TO | INTR_PCCRX0)) { 1552 tasklet_hi_schedule(&jme->rxclean_task); 1553 } 1554 } 1555 1556 out_reenable: 1557 /* 1558 * Re-enable interrupt 1559 */ 1560 jwrite32f(jme, JME_IENS, INTR_ENABLE); 1561 } 1562 1563 static irqreturn_t 1564 jme_intr(int irq, void *dev_id) 1565 { 1566 struct net_device *netdev = dev_id; 1567 struct jme_adapter *jme = netdev_priv(netdev); 1568 u32 intrstat; 1569 1570 intrstat = jread32(jme, JME_IEVE); 1571 1572 /* 1573 * Check if it's really an interrupt for us 1574 */ 1575 if (unlikely((intrstat & INTR_ENABLE) == 0)) 1576 return IRQ_NONE; 1577 1578 /* 1579 * Check if the device still exist 1580 */ 1581 if (unlikely(intrstat == ~((typeof(intrstat))0))) 1582 return IRQ_NONE; 1583 1584 jme_intr_msi(jme, intrstat); 1585 1586 return IRQ_HANDLED; 1587 } 1588 1589 static irqreturn_t 1590 jme_msi(int irq, void *dev_id) 1591 { 1592 struct net_device *netdev = dev_id; 1593 struct jme_adapter *jme = netdev_priv(netdev); 1594 u32 intrstat; 1595 1596 intrstat = jread32(jme, JME_IEVE); 1597 1598 jme_intr_msi(jme, intrstat); 1599 1600 return IRQ_HANDLED; 1601 } 1602 1603 static void 1604 jme_reset_link(struct jme_adapter *jme) 1605 { 1606 jwrite32(jme, JME_TMCSR, TMCSR_SWIT); 1607 } 1608 1609 static void 1610 jme_restart_an(struct jme_adapter *jme) 1611 { 1612 u32 bmcr; 1613 1614 spin_lock_bh(&jme->phy_lock); 1615 bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR); 1616 bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART); 1617 jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, bmcr); 1618 spin_unlock_bh(&jme->phy_lock); 1619 } 1620 1621 static int 1622 jme_request_irq(struct jme_adapter *jme) 1623 { 1624 int rc; 1625 struct net_device *netdev = jme->dev; 1626 irq_handler_t handler = jme_intr; 1627 int irq_flags = IRQF_SHARED; 1628 1629 if (!pci_enable_msi(jme->pdev)) { 1630 set_bit(JME_FLAG_MSI, &jme->flags); 1631 handler = jme_msi; 1632 irq_flags = 0; 1633 } 1634 1635 rc = request_irq(jme->pdev->irq, handler, irq_flags, netdev->name, 1636 netdev); 1637 if (rc) { 1638 netdev_err(netdev, 1639 "Unable to request %s interrupt (return: %d)\n", 1640 test_bit(JME_FLAG_MSI, &jme->flags) ? "MSI" : "INTx", 1641 rc); 1642 1643 if (test_bit(JME_FLAG_MSI, &jme->flags)) { 1644 pci_disable_msi(jme->pdev); 1645 clear_bit(JME_FLAG_MSI, &jme->flags); 1646 } 1647 } else { 1648 netdev->irq = jme->pdev->irq; 1649 } 1650 1651 return rc; 1652 } 1653 1654 static void 1655 jme_free_irq(struct jme_adapter *jme) 1656 { 1657 free_irq(jme->pdev->irq, jme->dev); 1658 if (test_bit(JME_FLAG_MSI, &jme->flags)) { 1659 pci_disable_msi(jme->pdev); 1660 clear_bit(JME_FLAG_MSI, &jme->flags); 1661 jme->dev->irq = jme->pdev->irq; 1662 } 1663 } 1664 1665 static inline void 1666 jme_new_phy_on(struct jme_adapter *jme) 1667 { 1668 u32 reg; 1669 1670 reg = jread32(jme, JME_PHY_PWR); 1671 reg &= ~(PHY_PWR_DWN1SEL | PHY_PWR_DWN1SW | 1672 PHY_PWR_DWN2 | PHY_PWR_CLKSEL); 1673 jwrite32(jme, JME_PHY_PWR, reg); 1674 1675 pci_read_config_dword(jme->pdev, PCI_PRIV_PE1, ®); 1676 reg &= ~PE1_GPREG0_PBG; 1677 reg |= PE1_GPREG0_ENBG; 1678 pci_write_config_dword(jme->pdev, PCI_PRIV_PE1, reg); 1679 } 1680 1681 static inline void 1682 jme_new_phy_off(struct jme_adapter *jme) 1683 { 1684 u32 reg; 1685 1686 reg = jread32(jme, JME_PHY_PWR); 1687 reg |= PHY_PWR_DWN1SEL | PHY_PWR_DWN1SW | 1688 PHY_PWR_DWN2 | PHY_PWR_CLKSEL; 1689 jwrite32(jme, JME_PHY_PWR, reg); 1690 1691 pci_read_config_dword(jme->pdev, PCI_PRIV_PE1, ®); 1692 reg &= ~PE1_GPREG0_PBG; 1693 reg |= PE1_GPREG0_PDD3COLD; 1694 pci_write_config_dword(jme->pdev, PCI_PRIV_PE1, reg); 1695 } 1696 1697 static inline void 1698 jme_phy_on(struct jme_adapter *jme) 1699 { 1700 u32 bmcr; 1701 1702 bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR); 1703 bmcr &= ~BMCR_PDOWN; 1704 jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, bmcr); 1705 1706 if (new_phy_power_ctrl(jme->chip_main_rev)) 1707 jme_new_phy_on(jme); 1708 } 1709 1710 static inline void 1711 jme_phy_off(struct jme_adapter *jme) 1712 { 1713 u32 bmcr; 1714 1715 bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR); 1716 bmcr |= BMCR_PDOWN; 1717 jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, bmcr); 1718 1719 if (new_phy_power_ctrl(jme->chip_main_rev)) 1720 jme_new_phy_off(jme); 1721 } 1722 1723 static int 1724 jme_phy_specreg_read(struct jme_adapter *jme, u32 specreg) 1725 { 1726 u32 phy_addr; 1727 1728 phy_addr = JM_PHY_SPEC_REG_READ | specreg; 1729 jme_mdio_write(jme->dev, jme->mii_if.phy_id, JM_PHY_SPEC_ADDR_REG, 1730 phy_addr); 1731 return jme_mdio_read(jme->dev, jme->mii_if.phy_id, 1732 JM_PHY_SPEC_DATA_REG); 1733 } 1734 1735 static void 1736 jme_phy_specreg_write(struct jme_adapter *jme, u32 ext_reg, u32 phy_data) 1737 { 1738 u32 phy_addr; 1739 1740 phy_addr = JM_PHY_SPEC_REG_WRITE | ext_reg; 1741 jme_mdio_write(jme->dev, jme->mii_if.phy_id, JM_PHY_SPEC_DATA_REG, 1742 phy_data); 1743 jme_mdio_write(jme->dev, jme->mii_if.phy_id, JM_PHY_SPEC_ADDR_REG, 1744 phy_addr); 1745 } 1746 1747 static int 1748 jme_phy_calibration(struct jme_adapter *jme) 1749 { 1750 u32 ctrl1000, phy_data; 1751 1752 jme_phy_off(jme); 1753 jme_phy_on(jme); 1754 /* Enabel PHY test mode 1 */ 1755 ctrl1000 = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_CTRL1000); 1756 ctrl1000 &= ~PHY_GAD_TEST_MODE_MSK; 1757 ctrl1000 |= PHY_GAD_TEST_MODE_1; 1758 jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_CTRL1000, ctrl1000); 1759 1760 phy_data = jme_phy_specreg_read(jme, JM_PHY_EXT_COMM_2_REG); 1761 phy_data &= ~JM_PHY_EXT_COMM_2_CALI_MODE_0; 1762 phy_data |= JM_PHY_EXT_COMM_2_CALI_LATCH | 1763 JM_PHY_EXT_COMM_2_CALI_ENABLE; 1764 jme_phy_specreg_write(jme, JM_PHY_EXT_COMM_2_REG, phy_data); 1765 msleep(20); 1766 phy_data = jme_phy_specreg_read(jme, JM_PHY_EXT_COMM_2_REG); 1767 phy_data &= ~(JM_PHY_EXT_COMM_2_CALI_ENABLE | 1768 JM_PHY_EXT_COMM_2_CALI_MODE_0 | 1769 JM_PHY_EXT_COMM_2_CALI_LATCH); 1770 jme_phy_specreg_write(jme, JM_PHY_EXT_COMM_2_REG, phy_data); 1771 1772 /* Disable PHY test mode */ 1773 ctrl1000 = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_CTRL1000); 1774 ctrl1000 &= ~PHY_GAD_TEST_MODE_MSK; 1775 jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_CTRL1000, ctrl1000); 1776 return 0; 1777 } 1778 1779 static int 1780 jme_phy_setEA(struct jme_adapter *jme) 1781 { 1782 u32 phy_comm0 = 0, phy_comm1 = 0; 1783 u8 nic_ctrl; 1784 1785 pci_read_config_byte(jme->pdev, PCI_PRIV_SHARE_NICCTRL, &nic_ctrl); 1786 if ((nic_ctrl & 0x3) == JME_FLAG_PHYEA_ENABLE) 1787 return 0; 1788 1789 switch (jme->pdev->device) { 1790 case PCI_DEVICE_ID_JMICRON_JMC250: 1791 if (((jme->chip_main_rev == 5) && 1792 ((jme->chip_sub_rev == 0) || (jme->chip_sub_rev == 1) || 1793 (jme->chip_sub_rev == 3))) || 1794 (jme->chip_main_rev >= 6)) { 1795 phy_comm0 = 0x008A; 1796 phy_comm1 = 0x4109; 1797 } 1798 if ((jme->chip_main_rev == 3) && 1799 ((jme->chip_sub_rev == 1) || (jme->chip_sub_rev == 2))) 1800 phy_comm0 = 0xE088; 1801 break; 1802 case PCI_DEVICE_ID_JMICRON_JMC260: 1803 if (((jme->chip_main_rev == 5) && 1804 ((jme->chip_sub_rev == 0) || (jme->chip_sub_rev == 1) || 1805 (jme->chip_sub_rev == 3))) || 1806 (jme->chip_main_rev >= 6)) { 1807 phy_comm0 = 0x008A; 1808 phy_comm1 = 0x4109; 1809 } 1810 if ((jme->chip_main_rev == 3) && 1811 ((jme->chip_sub_rev == 1) || (jme->chip_sub_rev == 2))) 1812 phy_comm0 = 0xE088; 1813 if ((jme->chip_main_rev == 2) && (jme->chip_sub_rev == 0)) 1814 phy_comm0 = 0x608A; 1815 if ((jme->chip_main_rev == 2) && (jme->chip_sub_rev == 2)) 1816 phy_comm0 = 0x408A; 1817 break; 1818 default: 1819 return -ENODEV; 1820 } 1821 if (phy_comm0) 1822 jme_phy_specreg_write(jme, JM_PHY_EXT_COMM_0_REG, phy_comm0); 1823 if (phy_comm1) 1824 jme_phy_specreg_write(jme, JM_PHY_EXT_COMM_1_REG, phy_comm1); 1825 1826 return 0; 1827 } 1828 1829 static int 1830 jme_open(struct net_device *netdev) 1831 { 1832 struct jme_adapter *jme = netdev_priv(netdev); 1833 int rc; 1834 1835 jme_clear_pm_disable_wol(jme); 1836 JME_NAPI_ENABLE(jme); 1837 1838 tasklet_init(&jme->linkch_task, jme_link_change_tasklet, 1839 (unsigned long) jme); 1840 tasklet_init(&jme->txclean_task, jme_tx_clean_tasklet, 1841 (unsigned long) jme); 1842 tasklet_init(&jme->rxclean_task, jme_rx_clean_tasklet, 1843 (unsigned long) jme); 1844 tasklet_init(&jme->rxempty_task, jme_rx_empty_tasklet, 1845 (unsigned long) jme); 1846 1847 rc = jme_request_irq(jme); 1848 if (rc) 1849 goto err_out; 1850 1851 jme_start_irq(jme); 1852 1853 jme_phy_on(jme); 1854 if (test_bit(JME_FLAG_SSET, &jme->flags)) 1855 jme_set_link_ksettings(netdev, &jme->old_cmd); 1856 else 1857 jme_reset_phy_processor(jme); 1858 jme_phy_calibration(jme); 1859 jme_phy_setEA(jme); 1860 jme_reset_link(jme); 1861 1862 return 0; 1863 1864 err_out: 1865 netif_stop_queue(netdev); 1866 netif_carrier_off(netdev); 1867 return rc; 1868 } 1869 1870 static void 1871 jme_set_100m_half(struct jme_adapter *jme) 1872 { 1873 u32 bmcr, tmp; 1874 1875 jme_phy_on(jme); 1876 bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR); 1877 tmp = bmcr & ~(BMCR_ANENABLE | BMCR_SPEED100 | 1878 BMCR_SPEED1000 | BMCR_FULLDPLX); 1879 tmp |= BMCR_SPEED100; 1880 1881 if (bmcr != tmp) 1882 jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, tmp); 1883 1884 if (jme->fpgaver) 1885 jwrite32(jme, JME_GHC, GHC_SPEED_100M | GHC_LINK_POLL); 1886 else 1887 jwrite32(jme, JME_GHC, GHC_SPEED_100M); 1888 } 1889 1890 #define JME_WAIT_LINK_TIME 2000 /* 2000ms */ 1891 static void 1892 jme_wait_link(struct jme_adapter *jme) 1893 { 1894 u32 phylink, to = JME_WAIT_LINK_TIME; 1895 1896 msleep(1000); 1897 phylink = jme_linkstat_from_phy(jme); 1898 while (!(phylink & PHY_LINK_UP) && (to -= 10) > 0) { 1899 usleep_range(10000, 11000); 1900 phylink = jme_linkstat_from_phy(jme); 1901 } 1902 } 1903 1904 static void 1905 jme_powersave_phy(struct jme_adapter *jme) 1906 { 1907 if (jme->reg_pmcs && device_may_wakeup(&jme->pdev->dev)) { 1908 jme_set_100m_half(jme); 1909 if (jme->reg_pmcs & (PMCS_LFEN | PMCS_LREN)) 1910 jme_wait_link(jme); 1911 jme_clear_pm_enable_wol(jme); 1912 } else { 1913 jme_phy_off(jme); 1914 } 1915 } 1916 1917 static int 1918 jme_close(struct net_device *netdev) 1919 { 1920 struct jme_adapter *jme = netdev_priv(netdev); 1921 1922 netif_stop_queue(netdev); 1923 netif_carrier_off(netdev); 1924 1925 jme_stop_irq(jme); 1926 jme_free_irq(jme); 1927 1928 JME_NAPI_DISABLE(jme); 1929 1930 tasklet_kill(&jme->linkch_task); 1931 tasklet_kill(&jme->txclean_task); 1932 tasklet_kill(&jme->rxclean_task); 1933 tasklet_kill(&jme->rxempty_task); 1934 1935 jme_disable_rx_engine(jme); 1936 jme_disable_tx_engine(jme); 1937 jme_reset_mac_processor(jme); 1938 jme_free_rx_resources(jme); 1939 jme_free_tx_resources(jme); 1940 jme->phylink = 0; 1941 jme_phy_off(jme); 1942 1943 return 0; 1944 } 1945 1946 static int 1947 jme_alloc_txdesc(struct jme_adapter *jme, 1948 struct sk_buff *skb) 1949 { 1950 struct jme_ring *txring = &(jme->txring[0]); 1951 int idx, nr_alloc, mask = jme->tx_ring_mask; 1952 1953 idx = txring->next_to_use; 1954 nr_alloc = skb_shinfo(skb)->nr_frags + 2; 1955 1956 if (unlikely(atomic_read(&txring->nr_free) < nr_alloc)) 1957 return -1; 1958 1959 atomic_sub(nr_alloc, &txring->nr_free); 1960 1961 txring->next_to_use = (txring->next_to_use + nr_alloc) & mask; 1962 1963 return idx; 1964 } 1965 1966 static int 1967 jme_fill_tx_map(struct pci_dev *pdev, 1968 struct txdesc *txdesc, 1969 struct jme_buffer_info *txbi, 1970 struct page *page, 1971 u32 page_offset, 1972 u32 len, 1973 bool hidma) 1974 { 1975 dma_addr_t dmaaddr; 1976 1977 dmaaddr = pci_map_page(pdev, 1978 page, 1979 page_offset, 1980 len, 1981 PCI_DMA_TODEVICE); 1982 1983 if (unlikely(pci_dma_mapping_error(pdev, dmaaddr))) 1984 return -EINVAL; 1985 1986 pci_dma_sync_single_for_device(pdev, 1987 dmaaddr, 1988 len, 1989 PCI_DMA_TODEVICE); 1990 1991 txdesc->dw[0] = 0; 1992 txdesc->dw[1] = 0; 1993 txdesc->desc2.flags = TXFLAG_OWN; 1994 txdesc->desc2.flags |= (hidma) ? TXFLAG_64BIT : 0; 1995 txdesc->desc2.datalen = cpu_to_le16(len); 1996 txdesc->desc2.bufaddrh = cpu_to_le32((__u64)dmaaddr >> 32); 1997 txdesc->desc2.bufaddrl = cpu_to_le32( 1998 (__u64)dmaaddr & 0xFFFFFFFFUL); 1999 2000 txbi->mapping = dmaaddr; 2001 txbi->len = len; 2002 return 0; 2003 } 2004 2005 static void jme_drop_tx_map(struct jme_adapter *jme, int startidx, int count) 2006 { 2007 struct jme_ring *txring = &(jme->txring[0]); 2008 struct jme_buffer_info *txbi = txring->bufinf, *ctxbi; 2009 int mask = jme->tx_ring_mask; 2010 int j; 2011 2012 for (j = 0 ; j < count ; j++) { 2013 ctxbi = txbi + ((startidx + j + 2) & (mask)); 2014 pci_unmap_page(jme->pdev, 2015 ctxbi->mapping, 2016 ctxbi->len, 2017 PCI_DMA_TODEVICE); 2018 2019 ctxbi->mapping = 0; 2020 ctxbi->len = 0; 2021 } 2022 } 2023 2024 static int 2025 jme_map_tx_skb(struct jme_adapter *jme, struct sk_buff *skb, int idx) 2026 { 2027 struct jme_ring *txring = &(jme->txring[0]); 2028 struct txdesc *txdesc = txring->desc, *ctxdesc; 2029 struct jme_buffer_info *txbi = txring->bufinf, *ctxbi; 2030 bool hidma = jme->dev->features & NETIF_F_HIGHDMA; 2031 int i, nr_frags = skb_shinfo(skb)->nr_frags; 2032 int mask = jme->tx_ring_mask; 2033 u32 len; 2034 int ret = 0; 2035 2036 for (i = 0 ; i < nr_frags ; ++i) { 2037 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i]; 2038 2039 ctxdesc = txdesc + ((idx + i + 2) & (mask)); 2040 ctxbi = txbi + ((idx + i + 2) & (mask)); 2041 2042 ret = jme_fill_tx_map(jme->pdev, ctxdesc, ctxbi, 2043 skb_frag_page(frag), skb_frag_off(frag), 2044 skb_frag_size(frag), hidma); 2045 if (ret) { 2046 jme_drop_tx_map(jme, idx, i); 2047 goto out; 2048 } 2049 } 2050 2051 len = skb_is_nonlinear(skb) ? skb_headlen(skb) : skb->len; 2052 ctxdesc = txdesc + ((idx + 1) & (mask)); 2053 ctxbi = txbi + ((idx + 1) & (mask)); 2054 ret = jme_fill_tx_map(jme->pdev, ctxdesc, ctxbi, virt_to_page(skb->data), 2055 offset_in_page(skb->data), len, hidma); 2056 if (ret) 2057 jme_drop_tx_map(jme, idx, i); 2058 2059 out: 2060 return ret; 2061 2062 } 2063 2064 2065 static int 2066 jme_tx_tso(struct sk_buff *skb, __le16 *mss, u8 *flags) 2067 { 2068 *mss = cpu_to_le16(skb_shinfo(skb)->gso_size << TXDESC_MSS_SHIFT); 2069 if (*mss) { 2070 *flags |= TXFLAG_LSEN; 2071 2072 if (skb->protocol == htons(ETH_P_IP)) { 2073 struct iphdr *iph = ip_hdr(skb); 2074 2075 iph->check = 0; 2076 tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, 2077 iph->daddr, 0, 2078 IPPROTO_TCP, 2079 0); 2080 } else { 2081 struct ipv6hdr *ip6h = ipv6_hdr(skb); 2082 2083 tcp_hdr(skb)->check = ~csum_ipv6_magic(&ip6h->saddr, 2084 &ip6h->daddr, 0, 2085 IPPROTO_TCP, 2086 0); 2087 } 2088 2089 return 0; 2090 } 2091 2092 return 1; 2093 } 2094 2095 static void 2096 jme_tx_csum(struct jme_adapter *jme, struct sk_buff *skb, u8 *flags) 2097 { 2098 if (skb->ip_summed == CHECKSUM_PARTIAL) { 2099 u8 ip_proto; 2100 2101 switch (skb->protocol) { 2102 case htons(ETH_P_IP): 2103 ip_proto = ip_hdr(skb)->protocol; 2104 break; 2105 case htons(ETH_P_IPV6): 2106 ip_proto = ipv6_hdr(skb)->nexthdr; 2107 break; 2108 default: 2109 ip_proto = 0; 2110 break; 2111 } 2112 2113 switch (ip_proto) { 2114 case IPPROTO_TCP: 2115 *flags |= TXFLAG_TCPCS; 2116 break; 2117 case IPPROTO_UDP: 2118 *flags |= TXFLAG_UDPCS; 2119 break; 2120 default: 2121 netif_err(jme, tx_err, jme->dev, "Error upper layer protocol\n"); 2122 break; 2123 } 2124 } 2125 } 2126 2127 static inline void 2128 jme_tx_vlan(struct sk_buff *skb, __le16 *vlan, u8 *flags) 2129 { 2130 if (skb_vlan_tag_present(skb)) { 2131 *flags |= TXFLAG_TAGON; 2132 *vlan = cpu_to_le16(skb_vlan_tag_get(skb)); 2133 } 2134 } 2135 2136 static int 2137 jme_fill_tx_desc(struct jme_adapter *jme, struct sk_buff *skb, int idx) 2138 { 2139 struct jme_ring *txring = &(jme->txring[0]); 2140 struct txdesc *txdesc; 2141 struct jme_buffer_info *txbi; 2142 u8 flags; 2143 int ret = 0; 2144 2145 txdesc = (struct txdesc *)txring->desc + idx; 2146 txbi = txring->bufinf + idx; 2147 2148 txdesc->dw[0] = 0; 2149 txdesc->dw[1] = 0; 2150 txdesc->dw[2] = 0; 2151 txdesc->dw[3] = 0; 2152 txdesc->desc1.pktsize = cpu_to_le16(skb->len); 2153 /* 2154 * Set OWN bit at final. 2155 * When kernel transmit faster than NIC. 2156 * And NIC trying to send this descriptor before we tell 2157 * it to start sending this TX queue. 2158 * Other fields are already filled correctly. 2159 */ 2160 wmb(); 2161 flags = TXFLAG_OWN | TXFLAG_INT; 2162 /* 2163 * Set checksum flags while not tso 2164 */ 2165 if (jme_tx_tso(skb, &txdesc->desc1.mss, &flags)) 2166 jme_tx_csum(jme, skb, &flags); 2167 jme_tx_vlan(skb, &txdesc->desc1.vlan, &flags); 2168 ret = jme_map_tx_skb(jme, skb, idx); 2169 if (ret) 2170 return ret; 2171 2172 txdesc->desc1.flags = flags; 2173 /* 2174 * Set tx buffer info after telling NIC to send 2175 * For better tx_clean timing 2176 */ 2177 wmb(); 2178 txbi->nr_desc = skb_shinfo(skb)->nr_frags + 2; 2179 txbi->skb = skb; 2180 txbi->len = skb->len; 2181 txbi->start_xmit = jiffies; 2182 if (!txbi->start_xmit) 2183 txbi->start_xmit = (0UL-1); 2184 2185 return 0; 2186 } 2187 2188 static void 2189 jme_stop_queue_if_full(struct jme_adapter *jme) 2190 { 2191 struct jme_ring *txring = &(jme->txring[0]); 2192 struct jme_buffer_info *txbi = txring->bufinf; 2193 int idx = atomic_read(&txring->next_to_clean); 2194 2195 txbi += idx; 2196 2197 smp_wmb(); 2198 if (unlikely(atomic_read(&txring->nr_free) < (MAX_SKB_FRAGS+2))) { 2199 netif_stop_queue(jme->dev); 2200 netif_info(jme, tx_queued, jme->dev, "TX Queue Paused\n"); 2201 smp_wmb(); 2202 if (atomic_read(&txring->nr_free) 2203 >= (jme->tx_wake_threshold)) { 2204 netif_wake_queue(jme->dev); 2205 netif_info(jme, tx_queued, jme->dev, "TX Queue Fast Waked\n"); 2206 } 2207 } 2208 2209 if (unlikely(txbi->start_xmit && 2210 (jiffies - txbi->start_xmit) >= TX_TIMEOUT && 2211 txbi->skb)) { 2212 netif_stop_queue(jme->dev); 2213 netif_info(jme, tx_queued, jme->dev, 2214 "TX Queue Stopped %d@%lu\n", idx, jiffies); 2215 } 2216 } 2217 2218 /* 2219 * This function is already protected by netif_tx_lock() 2220 */ 2221 2222 static netdev_tx_t 2223 jme_start_xmit(struct sk_buff *skb, struct net_device *netdev) 2224 { 2225 struct jme_adapter *jme = netdev_priv(netdev); 2226 int idx; 2227 2228 if (unlikely(skb_is_gso(skb) && skb_cow_head(skb, 0))) { 2229 dev_kfree_skb_any(skb); 2230 ++(NET_STAT(jme).tx_dropped); 2231 return NETDEV_TX_OK; 2232 } 2233 2234 idx = jme_alloc_txdesc(jme, skb); 2235 2236 if (unlikely(idx < 0)) { 2237 netif_stop_queue(netdev); 2238 netif_err(jme, tx_err, jme->dev, 2239 "BUG! Tx ring full when queue awake!\n"); 2240 2241 return NETDEV_TX_BUSY; 2242 } 2243 2244 if (jme_fill_tx_desc(jme, skb, idx)) 2245 return NETDEV_TX_OK; 2246 2247 jwrite32(jme, JME_TXCS, jme->reg_txcs | 2248 TXCS_SELECT_QUEUE0 | 2249 TXCS_QUEUE0S | 2250 TXCS_ENABLE); 2251 2252 tx_dbg(jme, "xmit: %d+%d@%lu\n", 2253 idx, skb_shinfo(skb)->nr_frags + 2, jiffies); 2254 jme_stop_queue_if_full(jme); 2255 2256 return NETDEV_TX_OK; 2257 } 2258 2259 static void 2260 jme_set_unicastaddr(struct net_device *netdev) 2261 { 2262 struct jme_adapter *jme = netdev_priv(netdev); 2263 u32 val; 2264 2265 val = (netdev->dev_addr[3] & 0xff) << 24 | 2266 (netdev->dev_addr[2] & 0xff) << 16 | 2267 (netdev->dev_addr[1] & 0xff) << 8 | 2268 (netdev->dev_addr[0] & 0xff); 2269 jwrite32(jme, JME_RXUMA_LO, val); 2270 val = (netdev->dev_addr[5] & 0xff) << 8 | 2271 (netdev->dev_addr[4] & 0xff); 2272 jwrite32(jme, JME_RXUMA_HI, val); 2273 } 2274 2275 static int 2276 jme_set_macaddr(struct net_device *netdev, void *p) 2277 { 2278 struct jme_adapter *jme = netdev_priv(netdev); 2279 struct sockaddr *addr = p; 2280 2281 if (netif_running(netdev)) 2282 return -EBUSY; 2283 2284 spin_lock_bh(&jme->macaddr_lock); 2285 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); 2286 jme_set_unicastaddr(netdev); 2287 spin_unlock_bh(&jme->macaddr_lock); 2288 2289 return 0; 2290 } 2291 2292 static void 2293 jme_set_multi(struct net_device *netdev) 2294 { 2295 struct jme_adapter *jme = netdev_priv(netdev); 2296 u32 mc_hash[2] = {}; 2297 2298 spin_lock_bh(&jme->rxmcs_lock); 2299 2300 jme->reg_rxmcs |= RXMCS_BRDFRAME | RXMCS_UNIFRAME; 2301 2302 if (netdev->flags & IFF_PROMISC) { 2303 jme->reg_rxmcs |= RXMCS_ALLFRAME; 2304 } else if (netdev->flags & IFF_ALLMULTI) { 2305 jme->reg_rxmcs |= RXMCS_ALLMULFRAME; 2306 } else if (netdev->flags & IFF_MULTICAST) { 2307 struct netdev_hw_addr *ha; 2308 int bit_nr; 2309 2310 jme->reg_rxmcs |= RXMCS_MULFRAME | RXMCS_MULFILTERED; 2311 netdev_for_each_mc_addr(ha, netdev) { 2312 bit_nr = ether_crc(ETH_ALEN, ha->addr) & 0x3F; 2313 mc_hash[bit_nr >> 5] |= 1 << (bit_nr & 0x1F); 2314 } 2315 2316 jwrite32(jme, JME_RXMCHT_LO, mc_hash[0]); 2317 jwrite32(jme, JME_RXMCHT_HI, mc_hash[1]); 2318 } 2319 2320 wmb(); 2321 jwrite32(jme, JME_RXMCS, jme->reg_rxmcs); 2322 2323 spin_unlock_bh(&jme->rxmcs_lock); 2324 } 2325 2326 static int 2327 jme_change_mtu(struct net_device *netdev, int new_mtu) 2328 { 2329 struct jme_adapter *jme = netdev_priv(netdev); 2330 2331 netdev->mtu = new_mtu; 2332 netdev_update_features(netdev); 2333 2334 jme_restart_rx_engine(jme); 2335 jme_reset_link(jme); 2336 2337 return 0; 2338 } 2339 2340 static void 2341 jme_tx_timeout(struct net_device *netdev) 2342 { 2343 struct jme_adapter *jme = netdev_priv(netdev); 2344 2345 jme->phylink = 0; 2346 jme_reset_phy_processor(jme); 2347 if (test_bit(JME_FLAG_SSET, &jme->flags)) 2348 jme_set_link_ksettings(netdev, &jme->old_cmd); 2349 2350 /* 2351 * Force to Reset the link again 2352 */ 2353 jme_reset_link(jme); 2354 } 2355 2356 static void 2357 jme_get_drvinfo(struct net_device *netdev, 2358 struct ethtool_drvinfo *info) 2359 { 2360 struct jme_adapter *jme = netdev_priv(netdev); 2361 2362 strlcpy(info->driver, DRV_NAME, sizeof(info->driver)); 2363 strlcpy(info->version, DRV_VERSION, sizeof(info->version)); 2364 strlcpy(info->bus_info, pci_name(jme->pdev), sizeof(info->bus_info)); 2365 } 2366 2367 static int 2368 jme_get_regs_len(struct net_device *netdev) 2369 { 2370 return JME_REG_LEN; 2371 } 2372 2373 static void 2374 mmapio_memcpy(struct jme_adapter *jme, u32 *p, u32 reg, int len) 2375 { 2376 int i; 2377 2378 for (i = 0 ; i < len ; i += 4) 2379 p[i >> 2] = jread32(jme, reg + i); 2380 } 2381 2382 static void 2383 mdio_memcpy(struct jme_adapter *jme, u32 *p, int reg_nr) 2384 { 2385 int i; 2386 u16 *p16 = (u16 *)p; 2387 2388 for (i = 0 ; i < reg_nr ; ++i) 2389 p16[i] = jme_mdio_read(jme->dev, jme->mii_if.phy_id, i); 2390 } 2391 2392 static void 2393 jme_get_regs(struct net_device *netdev, struct ethtool_regs *regs, void *p) 2394 { 2395 struct jme_adapter *jme = netdev_priv(netdev); 2396 u32 *p32 = (u32 *)p; 2397 2398 memset(p, 0xFF, JME_REG_LEN); 2399 2400 regs->version = 1; 2401 mmapio_memcpy(jme, p32, JME_MAC, JME_MAC_LEN); 2402 2403 p32 += 0x100 >> 2; 2404 mmapio_memcpy(jme, p32, JME_PHY, JME_PHY_LEN); 2405 2406 p32 += 0x100 >> 2; 2407 mmapio_memcpy(jme, p32, JME_MISC, JME_MISC_LEN); 2408 2409 p32 += 0x100 >> 2; 2410 mmapio_memcpy(jme, p32, JME_RSS, JME_RSS_LEN); 2411 2412 p32 += 0x100 >> 2; 2413 mdio_memcpy(jme, p32, JME_PHY_REG_NR); 2414 } 2415 2416 static int 2417 jme_get_coalesce(struct net_device *netdev, struct ethtool_coalesce *ecmd) 2418 { 2419 struct jme_adapter *jme = netdev_priv(netdev); 2420 2421 ecmd->tx_coalesce_usecs = PCC_TX_TO; 2422 ecmd->tx_max_coalesced_frames = PCC_TX_CNT; 2423 2424 if (test_bit(JME_FLAG_POLL, &jme->flags)) { 2425 ecmd->use_adaptive_rx_coalesce = false; 2426 ecmd->rx_coalesce_usecs = 0; 2427 ecmd->rx_max_coalesced_frames = 0; 2428 return 0; 2429 } 2430 2431 ecmd->use_adaptive_rx_coalesce = true; 2432 2433 switch (jme->dpi.cur) { 2434 case PCC_P1: 2435 ecmd->rx_coalesce_usecs = PCC_P1_TO; 2436 ecmd->rx_max_coalesced_frames = PCC_P1_CNT; 2437 break; 2438 case PCC_P2: 2439 ecmd->rx_coalesce_usecs = PCC_P2_TO; 2440 ecmd->rx_max_coalesced_frames = PCC_P2_CNT; 2441 break; 2442 case PCC_P3: 2443 ecmd->rx_coalesce_usecs = PCC_P3_TO; 2444 ecmd->rx_max_coalesced_frames = PCC_P3_CNT; 2445 break; 2446 default: 2447 break; 2448 } 2449 2450 return 0; 2451 } 2452 2453 static int 2454 jme_set_coalesce(struct net_device *netdev, struct ethtool_coalesce *ecmd) 2455 { 2456 struct jme_adapter *jme = netdev_priv(netdev); 2457 struct dynpcc_info *dpi = &(jme->dpi); 2458 2459 if (netif_running(netdev)) 2460 return -EBUSY; 2461 2462 if (ecmd->use_adaptive_rx_coalesce && 2463 test_bit(JME_FLAG_POLL, &jme->flags)) { 2464 clear_bit(JME_FLAG_POLL, &jme->flags); 2465 jme->jme_rx = netif_rx; 2466 dpi->cur = PCC_P1; 2467 dpi->attempt = PCC_P1; 2468 dpi->cnt = 0; 2469 jme_set_rx_pcc(jme, PCC_P1); 2470 jme_interrupt_mode(jme); 2471 } else if (!(ecmd->use_adaptive_rx_coalesce) && 2472 !(test_bit(JME_FLAG_POLL, &jme->flags))) { 2473 set_bit(JME_FLAG_POLL, &jme->flags); 2474 jme->jme_rx = netif_receive_skb; 2475 jme_interrupt_mode(jme); 2476 } 2477 2478 return 0; 2479 } 2480 2481 static void 2482 jme_get_pauseparam(struct net_device *netdev, 2483 struct ethtool_pauseparam *ecmd) 2484 { 2485 struct jme_adapter *jme = netdev_priv(netdev); 2486 u32 val; 2487 2488 ecmd->tx_pause = (jme->reg_txpfc & TXPFC_PF_EN) != 0; 2489 ecmd->rx_pause = (jme->reg_rxmcs & RXMCS_FLOWCTRL) != 0; 2490 2491 spin_lock_bh(&jme->phy_lock); 2492 val = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_ADVERTISE); 2493 spin_unlock_bh(&jme->phy_lock); 2494 2495 ecmd->autoneg = 2496 (val & (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM)) != 0; 2497 } 2498 2499 static int 2500 jme_set_pauseparam(struct net_device *netdev, 2501 struct ethtool_pauseparam *ecmd) 2502 { 2503 struct jme_adapter *jme = netdev_priv(netdev); 2504 u32 val; 2505 2506 if (((jme->reg_txpfc & TXPFC_PF_EN) != 0) ^ 2507 (ecmd->tx_pause != 0)) { 2508 2509 if (ecmd->tx_pause) 2510 jme->reg_txpfc |= TXPFC_PF_EN; 2511 else 2512 jme->reg_txpfc &= ~TXPFC_PF_EN; 2513 2514 jwrite32(jme, JME_TXPFC, jme->reg_txpfc); 2515 } 2516 2517 spin_lock_bh(&jme->rxmcs_lock); 2518 if (((jme->reg_rxmcs & RXMCS_FLOWCTRL) != 0) ^ 2519 (ecmd->rx_pause != 0)) { 2520 2521 if (ecmd->rx_pause) 2522 jme->reg_rxmcs |= RXMCS_FLOWCTRL; 2523 else 2524 jme->reg_rxmcs &= ~RXMCS_FLOWCTRL; 2525 2526 jwrite32(jme, JME_RXMCS, jme->reg_rxmcs); 2527 } 2528 spin_unlock_bh(&jme->rxmcs_lock); 2529 2530 spin_lock_bh(&jme->phy_lock); 2531 val = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_ADVERTISE); 2532 if (((val & (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM)) != 0) ^ 2533 (ecmd->autoneg != 0)) { 2534 2535 if (ecmd->autoneg) 2536 val |= (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM); 2537 else 2538 val &= ~(ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM); 2539 2540 jme_mdio_write(jme->dev, jme->mii_if.phy_id, 2541 MII_ADVERTISE, val); 2542 } 2543 spin_unlock_bh(&jme->phy_lock); 2544 2545 return 0; 2546 } 2547 2548 static void 2549 jme_get_wol(struct net_device *netdev, 2550 struct ethtool_wolinfo *wol) 2551 { 2552 struct jme_adapter *jme = netdev_priv(netdev); 2553 2554 wol->supported = WAKE_MAGIC | WAKE_PHY; 2555 2556 wol->wolopts = 0; 2557 2558 if (jme->reg_pmcs & (PMCS_LFEN | PMCS_LREN)) 2559 wol->wolopts |= WAKE_PHY; 2560 2561 if (jme->reg_pmcs & PMCS_MFEN) 2562 wol->wolopts |= WAKE_MAGIC; 2563 2564 } 2565 2566 static int 2567 jme_set_wol(struct net_device *netdev, 2568 struct ethtool_wolinfo *wol) 2569 { 2570 struct jme_adapter *jme = netdev_priv(netdev); 2571 2572 if (wol->wolopts & (WAKE_MAGICSECURE | 2573 WAKE_UCAST | 2574 WAKE_MCAST | 2575 WAKE_BCAST | 2576 WAKE_ARP)) 2577 return -EOPNOTSUPP; 2578 2579 jme->reg_pmcs = 0; 2580 2581 if (wol->wolopts & WAKE_PHY) 2582 jme->reg_pmcs |= PMCS_LFEN | PMCS_LREN; 2583 2584 if (wol->wolopts & WAKE_MAGIC) 2585 jme->reg_pmcs |= PMCS_MFEN; 2586 2587 return 0; 2588 } 2589 2590 static int 2591 jme_get_link_ksettings(struct net_device *netdev, 2592 struct ethtool_link_ksettings *cmd) 2593 { 2594 struct jme_adapter *jme = netdev_priv(netdev); 2595 2596 spin_lock_bh(&jme->phy_lock); 2597 mii_ethtool_get_link_ksettings(&jme->mii_if, cmd); 2598 spin_unlock_bh(&jme->phy_lock); 2599 return 0; 2600 } 2601 2602 static int 2603 jme_set_link_ksettings(struct net_device *netdev, 2604 const struct ethtool_link_ksettings *cmd) 2605 { 2606 struct jme_adapter *jme = netdev_priv(netdev); 2607 int rc, fdc = 0; 2608 2609 if (cmd->base.speed == SPEED_1000 && 2610 cmd->base.autoneg != AUTONEG_ENABLE) 2611 return -EINVAL; 2612 2613 /* 2614 * Check If user changed duplex only while force_media. 2615 * Hardware would not generate link change interrupt. 2616 */ 2617 if (jme->mii_if.force_media && 2618 cmd->base.autoneg != AUTONEG_ENABLE && 2619 (jme->mii_if.full_duplex != cmd->base.duplex)) 2620 fdc = 1; 2621 2622 spin_lock_bh(&jme->phy_lock); 2623 rc = mii_ethtool_set_link_ksettings(&jme->mii_if, cmd); 2624 spin_unlock_bh(&jme->phy_lock); 2625 2626 if (!rc) { 2627 if (fdc) 2628 jme_reset_link(jme); 2629 jme->old_cmd = *cmd; 2630 set_bit(JME_FLAG_SSET, &jme->flags); 2631 } 2632 2633 return rc; 2634 } 2635 2636 static int 2637 jme_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd) 2638 { 2639 int rc; 2640 struct jme_adapter *jme = netdev_priv(netdev); 2641 struct mii_ioctl_data *mii_data = if_mii(rq); 2642 unsigned int duplex_chg; 2643 2644 if (cmd == SIOCSMIIREG) { 2645 u16 val = mii_data->val_in; 2646 if (!(val & (BMCR_RESET|BMCR_ANENABLE)) && 2647 (val & BMCR_SPEED1000)) 2648 return -EINVAL; 2649 } 2650 2651 spin_lock_bh(&jme->phy_lock); 2652 rc = generic_mii_ioctl(&jme->mii_if, mii_data, cmd, &duplex_chg); 2653 spin_unlock_bh(&jme->phy_lock); 2654 2655 if (!rc && (cmd == SIOCSMIIREG)) { 2656 if (duplex_chg) 2657 jme_reset_link(jme); 2658 jme_get_link_ksettings(netdev, &jme->old_cmd); 2659 set_bit(JME_FLAG_SSET, &jme->flags); 2660 } 2661 2662 return rc; 2663 } 2664 2665 static u32 2666 jme_get_link(struct net_device *netdev) 2667 { 2668 struct jme_adapter *jme = netdev_priv(netdev); 2669 return jread32(jme, JME_PHY_LINK) & PHY_LINK_UP; 2670 } 2671 2672 static u32 2673 jme_get_msglevel(struct net_device *netdev) 2674 { 2675 struct jme_adapter *jme = netdev_priv(netdev); 2676 return jme->msg_enable; 2677 } 2678 2679 static void 2680 jme_set_msglevel(struct net_device *netdev, u32 value) 2681 { 2682 struct jme_adapter *jme = netdev_priv(netdev); 2683 jme->msg_enable = value; 2684 } 2685 2686 static netdev_features_t 2687 jme_fix_features(struct net_device *netdev, netdev_features_t features) 2688 { 2689 if (netdev->mtu > 1900) 2690 features &= ~(NETIF_F_ALL_TSO | NETIF_F_CSUM_MASK); 2691 return features; 2692 } 2693 2694 static int 2695 jme_set_features(struct net_device *netdev, netdev_features_t features) 2696 { 2697 struct jme_adapter *jme = netdev_priv(netdev); 2698 2699 spin_lock_bh(&jme->rxmcs_lock); 2700 if (features & NETIF_F_RXCSUM) 2701 jme->reg_rxmcs |= RXMCS_CHECKSUM; 2702 else 2703 jme->reg_rxmcs &= ~RXMCS_CHECKSUM; 2704 jwrite32(jme, JME_RXMCS, jme->reg_rxmcs); 2705 spin_unlock_bh(&jme->rxmcs_lock); 2706 2707 return 0; 2708 } 2709 2710 #ifdef CONFIG_NET_POLL_CONTROLLER 2711 static void jme_netpoll(struct net_device *dev) 2712 { 2713 unsigned long flags; 2714 2715 local_irq_save(flags); 2716 jme_intr(dev->irq, dev); 2717 local_irq_restore(flags); 2718 } 2719 #endif 2720 2721 static int 2722 jme_nway_reset(struct net_device *netdev) 2723 { 2724 struct jme_adapter *jme = netdev_priv(netdev); 2725 jme_restart_an(jme); 2726 return 0; 2727 } 2728 2729 static u8 2730 jme_smb_read(struct jme_adapter *jme, unsigned int addr) 2731 { 2732 u32 val; 2733 int to; 2734 2735 val = jread32(jme, JME_SMBCSR); 2736 to = JME_SMB_BUSY_TIMEOUT; 2737 while ((val & SMBCSR_BUSY) && --to) { 2738 msleep(1); 2739 val = jread32(jme, JME_SMBCSR); 2740 } 2741 if (!to) { 2742 netif_err(jme, hw, jme->dev, "SMB Bus Busy\n"); 2743 return 0xFF; 2744 } 2745 2746 jwrite32(jme, JME_SMBINTF, 2747 ((addr << SMBINTF_HWADDR_SHIFT) & SMBINTF_HWADDR) | 2748 SMBINTF_HWRWN_READ | 2749 SMBINTF_HWCMD); 2750 2751 val = jread32(jme, JME_SMBINTF); 2752 to = JME_SMB_BUSY_TIMEOUT; 2753 while ((val & SMBINTF_HWCMD) && --to) { 2754 msleep(1); 2755 val = jread32(jme, JME_SMBINTF); 2756 } 2757 if (!to) { 2758 netif_err(jme, hw, jme->dev, "SMB Bus Busy\n"); 2759 return 0xFF; 2760 } 2761 2762 return (val & SMBINTF_HWDATR) >> SMBINTF_HWDATR_SHIFT; 2763 } 2764 2765 static void 2766 jme_smb_write(struct jme_adapter *jme, unsigned int addr, u8 data) 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; 2780 } 2781 2782 jwrite32(jme, JME_SMBINTF, 2783 ((data << SMBINTF_HWDATW_SHIFT) & SMBINTF_HWDATW) | 2784 ((addr << SMBINTF_HWADDR_SHIFT) & SMBINTF_HWADDR) | 2785 SMBINTF_HWRWN_WRITE | 2786 SMBINTF_HWCMD); 2787 2788 val = jread32(jme, JME_SMBINTF); 2789 to = JME_SMB_BUSY_TIMEOUT; 2790 while ((val & SMBINTF_HWCMD) && --to) { 2791 msleep(1); 2792 val = jread32(jme, JME_SMBINTF); 2793 } 2794 if (!to) { 2795 netif_err(jme, hw, jme->dev, "SMB Bus Busy\n"); 2796 return; 2797 } 2798 2799 mdelay(2); 2800 } 2801 2802 static int 2803 jme_get_eeprom_len(struct net_device *netdev) 2804 { 2805 struct jme_adapter *jme = netdev_priv(netdev); 2806 u32 val; 2807 val = jread32(jme, JME_SMBCSR); 2808 return (val & SMBCSR_EEPROMD) ? JME_SMB_LEN : 0; 2809 } 2810 2811 static int 2812 jme_get_eeprom(struct net_device *netdev, 2813 struct ethtool_eeprom *eeprom, u8 *data) 2814 { 2815 struct jme_adapter *jme = netdev_priv(netdev); 2816 int i, offset = eeprom->offset, len = eeprom->len; 2817 2818 /* 2819 * ethtool will check the boundary for us 2820 */ 2821 eeprom->magic = JME_EEPROM_MAGIC; 2822 for (i = 0 ; i < len ; ++i) 2823 data[i] = jme_smb_read(jme, i + offset); 2824 2825 return 0; 2826 } 2827 2828 static int 2829 jme_set_eeprom(struct net_device *netdev, 2830 struct ethtool_eeprom *eeprom, u8 *data) 2831 { 2832 struct jme_adapter *jme = netdev_priv(netdev); 2833 int i, offset = eeprom->offset, len = eeprom->len; 2834 2835 if (eeprom->magic != JME_EEPROM_MAGIC) 2836 return -EINVAL; 2837 2838 /* 2839 * ethtool will check the boundary for us 2840 */ 2841 for (i = 0 ; i < len ; ++i) 2842 jme_smb_write(jme, i + offset, data[i]); 2843 2844 return 0; 2845 } 2846 2847 static const struct ethtool_ops jme_ethtool_ops = { 2848 .get_drvinfo = jme_get_drvinfo, 2849 .get_regs_len = jme_get_regs_len, 2850 .get_regs = jme_get_regs, 2851 .get_coalesce = jme_get_coalesce, 2852 .set_coalesce = jme_set_coalesce, 2853 .get_pauseparam = jme_get_pauseparam, 2854 .set_pauseparam = jme_set_pauseparam, 2855 .get_wol = jme_get_wol, 2856 .set_wol = jme_set_wol, 2857 .get_link = jme_get_link, 2858 .get_msglevel = jme_get_msglevel, 2859 .set_msglevel = jme_set_msglevel, 2860 .nway_reset = jme_nway_reset, 2861 .get_eeprom_len = jme_get_eeprom_len, 2862 .get_eeprom = jme_get_eeprom, 2863 .set_eeprom = jme_set_eeprom, 2864 .get_link_ksettings = jme_get_link_ksettings, 2865 .set_link_ksettings = jme_set_link_ksettings, 2866 }; 2867 2868 static int 2869 jme_pci_dma64(struct pci_dev *pdev) 2870 { 2871 if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250 && 2872 !pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) 2873 if (!pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64))) 2874 return 1; 2875 2876 if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250 && 2877 !pci_set_dma_mask(pdev, DMA_BIT_MASK(40))) 2878 if (!pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(40))) 2879 return 1; 2880 2881 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) 2882 if (!pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32))) 2883 return 0; 2884 2885 return -1; 2886 } 2887 2888 static inline void 2889 jme_phy_init(struct jme_adapter *jme) 2890 { 2891 u16 reg26; 2892 2893 reg26 = jme_mdio_read(jme->dev, jme->mii_if.phy_id, 26); 2894 jme_mdio_write(jme->dev, jme->mii_if.phy_id, 26, reg26 | 0x1000); 2895 } 2896 2897 static inline void 2898 jme_check_hw_ver(struct jme_adapter *jme) 2899 { 2900 u32 chipmode; 2901 2902 chipmode = jread32(jme, JME_CHIPMODE); 2903 2904 jme->fpgaver = (chipmode & CM_FPGAVER_MASK) >> CM_FPGAVER_SHIFT; 2905 jme->chiprev = (chipmode & CM_CHIPREV_MASK) >> CM_CHIPREV_SHIFT; 2906 jme->chip_main_rev = jme->chiprev & 0xF; 2907 jme->chip_sub_rev = (jme->chiprev >> 4) & 0xF; 2908 } 2909 2910 static const struct net_device_ops jme_netdev_ops = { 2911 .ndo_open = jme_open, 2912 .ndo_stop = jme_close, 2913 .ndo_validate_addr = eth_validate_addr, 2914 .ndo_do_ioctl = jme_ioctl, 2915 .ndo_start_xmit = jme_start_xmit, 2916 .ndo_set_mac_address = jme_set_macaddr, 2917 .ndo_set_rx_mode = jme_set_multi, 2918 .ndo_change_mtu = jme_change_mtu, 2919 .ndo_tx_timeout = jme_tx_timeout, 2920 .ndo_fix_features = jme_fix_features, 2921 .ndo_set_features = jme_set_features, 2922 #ifdef CONFIG_NET_POLL_CONTROLLER 2923 .ndo_poll_controller = jme_netpoll, 2924 #endif 2925 }; 2926 2927 static int 2928 jme_init_one(struct pci_dev *pdev, 2929 const struct pci_device_id *ent) 2930 { 2931 int rc = 0, using_dac, i; 2932 struct net_device *netdev; 2933 struct jme_adapter *jme; 2934 u16 bmcr, bmsr; 2935 u32 apmc; 2936 2937 /* 2938 * set up PCI device basics 2939 */ 2940 pci_disable_link_state(pdev, PCIE_LINK_STATE_L0S | PCIE_LINK_STATE_L1 | 2941 PCIE_LINK_STATE_CLKPM); 2942 2943 rc = pci_enable_device(pdev); 2944 if (rc) { 2945 pr_err("Cannot enable PCI device\n"); 2946 goto err_out; 2947 } 2948 2949 using_dac = jme_pci_dma64(pdev); 2950 if (using_dac < 0) { 2951 pr_err("Cannot set PCI DMA Mask\n"); 2952 rc = -EIO; 2953 goto err_out_disable_pdev; 2954 } 2955 2956 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) { 2957 pr_err("No PCI resource region found\n"); 2958 rc = -ENOMEM; 2959 goto err_out_disable_pdev; 2960 } 2961 2962 rc = pci_request_regions(pdev, DRV_NAME); 2963 if (rc) { 2964 pr_err("Cannot obtain PCI resource region\n"); 2965 goto err_out_disable_pdev; 2966 } 2967 2968 pci_set_master(pdev); 2969 2970 /* 2971 * alloc and init net device 2972 */ 2973 netdev = alloc_etherdev(sizeof(*jme)); 2974 if (!netdev) { 2975 rc = -ENOMEM; 2976 goto err_out_release_regions; 2977 } 2978 netdev->netdev_ops = &jme_netdev_ops; 2979 netdev->ethtool_ops = &jme_ethtool_ops; 2980 netdev->watchdog_timeo = TX_TIMEOUT; 2981 netdev->hw_features = NETIF_F_IP_CSUM | 2982 NETIF_F_IPV6_CSUM | 2983 NETIF_F_SG | 2984 NETIF_F_TSO | 2985 NETIF_F_TSO6 | 2986 NETIF_F_RXCSUM; 2987 netdev->features = NETIF_F_IP_CSUM | 2988 NETIF_F_IPV6_CSUM | 2989 NETIF_F_SG | 2990 NETIF_F_TSO | 2991 NETIF_F_TSO6 | 2992 NETIF_F_HW_VLAN_CTAG_TX | 2993 NETIF_F_HW_VLAN_CTAG_RX; 2994 if (using_dac) 2995 netdev->features |= NETIF_F_HIGHDMA; 2996 2997 /* MTU range: 1280 - 9202*/ 2998 netdev->min_mtu = IPV6_MIN_MTU; 2999 netdev->max_mtu = MAX_ETHERNET_JUMBO_PACKET_SIZE - ETH_HLEN; 3000 3001 SET_NETDEV_DEV(netdev, &pdev->dev); 3002 pci_set_drvdata(pdev, netdev); 3003 3004 /* 3005 * init adapter info 3006 */ 3007 jme = netdev_priv(netdev); 3008 jme->pdev = pdev; 3009 jme->dev = netdev; 3010 jme->jme_rx = netif_rx; 3011 jme->old_mtu = netdev->mtu = 1500; 3012 jme->phylink = 0; 3013 jme->tx_ring_size = 1 << 10; 3014 jme->tx_ring_mask = jme->tx_ring_size - 1; 3015 jme->tx_wake_threshold = 1 << 9; 3016 jme->rx_ring_size = 1 << 9; 3017 jme->rx_ring_mask = jme->rx_ring_size - 1; 3018 jme->msg_enable = JME_DEF_MSG_ENABLE; 3019 jme->regs = ioremap(pci_resource_start(pdev, 0), 3020 pci_resource_len(pdev, 0)); 3021 if (!(jme->regs)) { 3022 pr_err("Mapping PCI resource region error\n"); 3023 rc = -ENOMEM; 3024 goto err_out_free_netdev; 3025 } 3026 3027 if (no_pseudohp) { 3028 apmc = jread32(jme, JME_APMC) & ~JME_APMC_PSEUDO_HP_EN; 3029 jwrite32(jme, JME_APMC, apmc); 3030 } else if (force_pseudohp) { 3031 apmc = jread32(jme, JME_APMC) | JME_APMC_PSEUDO_HP_EN; 3032 jwrite32(jme, JME_APMC, apmc); 3033 } 3034 3035 NETIF_NAPI_SET(netdev, &jme->napi, jme_poll, NAPI_POLL_WEIGHT) 3036 3037 spin_lock_init(&jme->phy_lock); 3038 spin_lock_init(&jme->macaddr_lock); 3039 spin_lock_init(&jme->rxmcs_lock); 3040 3041 atomic_set(&jme->link_changing, 1); 3042 atomic_set(&jme->rx_cleaning, 1); 3043 atomic_set(&jme->tx_cleaning, 1); 3044 atomic_set(&jme->rx_empty, 1); 3045 3046 tasklet_init(&jme->pcc_task, 3047 jme_pcc_tasklet, 3048 (unsigned long) jme); 3049 jme->dpi.cur = PCC_P1; 3050 3051 jme->reg_ghc = 0; 3052 jme->reg_rxcs = RXCS_DEFAULT; 3053 jme->reg_rxmcs = RXMCS_DEFAULT; 3054 jme->reg_txpfc = 0; 3055 jme->reg_pmcs = PMCS_MFEN; 3056 jme->reg_gpreg1 = GPREG1_DEFAULT; 3057 3058 if (jme->reg_rxmcs & RXMCS_CHECKSUM) 3059 netdev->features |= NETIF_F_RXCSUM; 3060 3061 /* 3062 * Get Max Read Req Size from PCI Config Space 3063 */ 3064 pci_read_config_byte(pdev, PCI_DCSR_MRRS, &jme->mrrs); 3065 jme->mrrs &= PCI_DCSR_MRRS_MASK; 3066 switch (jme->mrrs) { 3067 case MRRS_128B: 3068 jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_128B; 3069 break; 3070 case MRRS_256B: 3071 jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_256B; 3072 break; 3073 default: 3074 jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_512B; 3075 break; 3076 } 3077 3078 /* 3079 * Must check before reset_mac_processor 3080 */ 3081 jme_check_hw_ver(jme); 3082 jme->mii_if.dev = netdev; 3083 if (jme->fpgaver) { 3084 jme->mii_if.phy_id = 0; 3085 for (i = 1 ; i < 32 ; ++i) { 3086 bmcr = jme_mdio_read(netdev, i, MII_BMCR); 3087 bmsr = jme_mdio_read(netdev, i, MII_BMSR); 3088 if (bmcr != 0xFFFFU && (bmcr != 0 || bmsr != 0)) { 3089 jme->mii_if.phy_id = i; 3090 break; 3091 } 3092 } 3093 3094 if (!jme->mii_if.phy_id) { 3095 rc = -EIO; 3096 pr_err("Can not find phy_id\n"); 3097 goto err_out_unmap; 3098 } 3099 3100 jme->reg_ghc |= GHC_LINK_POLL; 3101 } else { 3102 jme->mii_if.phy_id = 1; 3103 } 3104 if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250) 3105 jme->mii_if.supports_gmii = true; 3106 else 3107 jme->mii_if.supports_gmii = false; 3108 jme->mii_if.phy_id_mask = 0x1F; 3109 jme->mii_if.reg_num_mask = 0x1F; 3110 jme->mii_if.mdio_read = jme_mdio_read; 3111 jme->mii_if.mdio_write = jme_mdio_write; 3112 3113 jme_clear_pm_disable_wol(jme); 3114 device_init_wakeup(&pdev->dev, true); 3115 3116 jme_set_phyfifo_5level(jme); 3117 jme->pcirev = pdev->revision; 3118 if (!jme->fpgaver) 3119 jme_phy_init(jme); 3120 jme_phy_off(jme); 3121 3122 /* 3123 * Reset MAC processor and reload EEPROM for MAC Address 3124 */ 3125 jme_reset_mac_processor(jme); 3126 rc = jme_reload_eeprom(jme); 3127 if (rc) { 3128 pr_err("Reload eeprom for reading MAC Address error\n"); 3129 goto err_out_unmap; 3130 } 3131 jme_load_macaddr(netdev); 3132 3133 /* 3134 * Tell stack that we are not ready to work until open() 3135 */ 3136 netif_carrier_off(netdev); 3137 3138 rc = register_netdev(netdev); 3139 if (rc) { 3140 pr_err("Cannot register net device\n"); 3141 goto err_out_unmap; 3142 } 3143 3144 netif_info(jme, probe, jme->dev, "%s%s chiprev:%x pcirev:%x macaddr:%pM\n", 3145 (jme->pdev->device == PCI_DEVICE_ID_JMICRON_JMC250) ? 3146 "JMC250 Gigabit Ethernet" : 3147 (jme->pdev->device == PCI_DEVICE_ID_JMICRON_JMC260) ? 3148 "JMC260 Fast Ethernet" : "Unknown", 3149 (jme->fpgaver != 0) ? " (FPGA)" : "", 3150 (jme->fpgaver != 0) ? jme->fpgaver : jme->chiprev, 3151 jme->pcirev, netdev->dev_addr); 3152 3153 return 0; 3154 3155 err_out_unmap: 3156 iounmap(jme->regs); 3157 err_out_free_netdev: 3158 free_netdev(netdev); 3159 err_out_release_regions: 3160 pci_release_regions(pdev); 3161 err_out_disable_pdev: 3162 pci_disable_device(pdev); 3163 err_out: 3164 return rc; 3165 } 3166 3167 static void 3168 jme_remove_one(struct pci_dev *pdev) 3169 { 3170 struct net_device *netdev = pci_get_drvdata(pdev); 3171 struct jme_adapter *jme = netdev_priv(netdev); 3172 3173 unregister_netdev(netdev); 3174 iounmap(jme->regs); 3175 free_netdev(netdev); 3176 pci_release_regions(pdev); 3177 pci_disable_device(pdev); 3178 3179 } 3180 3181 static void 3182 jme_shutdown(struct pci_dev *pdev) 3183 { 3184 struct net_device *netdev = pci_get_drvdata(pdev); 3185 struct jme_adapter *jme = netdev_priv(netdev); 3186 3187 jme_powersave_phy(jme); 3188 pci_pme_active(pdev, true); 3189 } 3190 3191 #ifdef CONFIG_PM_SLEEP 3192 static int 3193 jme_suspend(struct device *dev) 3194 { 3195 struct net_device *netdev = dev_get_drvdata(dev); 3196 struct jme_adapter *jme = netdev_priv(netdev); 3197 3198 if (!netif_running(netdev)) 3199 return 0; 3200 3201 atomic_dec(&jme->link_changing); 3202 3203 netif_device_detach(netdev); 3204 netif_stop_queue(netdev); 3205 jme_stop_irq(jme); 3206 3207 tasklet_disable(&jme->txclean_task); 3208 tasklet_disable(&jme->rxclean_task); 3209 tasklet_disable(&jme->rxempty_task); 3210 3211 if (netif_carrier_ok(netdev)) { 3212 if (test_bit(JME_FLAG_POLL, &jme->flags)) 3213 jme_polling_mode(jme); 3214 3215 jme_stop_pcc_timer(jme); 3216 jme_disable_rx_engine(jme); 3217 jme_disable_tx_engine(jme); 3218 jme_reset_mac_processor(jme); 3219 jme_free_rx_resources(jme); 3220 jme_free_tx_resources(jme); 3221 netif_carrier_off(netdev); 3222 jme->phylink = 0; 3223 } 3224 3225 tasklet_enable(&jme->txclean_task); 3226 tasklet_enable(&jme->rxclean_task); 3227 tasklet_enable(&jme->rxempty_task); 3228 3229 jme_powersave_phy(jme); 3230 3231 return 0; 3232 } 3233 3234 static int 3235 jme_resume(struct device *dev) 3236 { 3237 struct net_device *netdev = dev_get_drvdata(dev); 3238 struct jme_adapter *jme = netdev_priv(netdev); 3239 3240 if (!netif_running(netdev)) 3241 return 0; 3242 3243 jme_clear_pm_disable_wol(jme); 3244 jme_phy_on(jme); 3245 if (test_bit(JME_FLAG_SSET, &jme->flags)) 3246 jme_set_link_ksettings(netdev, &jme->old_cmd); 3247 else 3248 jme_reset_phy_processor(jme); 3249 jme_phy_calibration(jme); 3250 jme_phy_setEA(jme); 3251 netif_device_attach(netdev); 3252 3253 atomic_inc(&jme->link_changing); 3254 3255 jme_reset_link(jme); 3256 3257 jme_start_irq(jme); 3258 3259 return 0; 3260 } 3261 3262 static SIMPLE_DEV_PM_OPS(jme_pm_ops, jme_suspend, jme_resume); 3263 #define JME_PM_OPS (&jme_pm_ops) 3264 3265 #else 3266 3267 #define JME_PM_OPS NULL 3268 #endif 3269 3270 static const struct pci_device_id jme_pci_tbl[] = { 3271 { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMC250) }, 3272 { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMC260) }, 3273 { } 3274 }; 3275 3276 static struct pci_driver jme_driver = { 3277 .name = DRV_NAME, 3278 .id_table = jme_pci_tbl, 3279 .probe = jme_init_one, 3280 .remove = jme_remove_one, 3281 .shutdown = jme_shutdown, 3282 .driver.pm = JME_PM_OPS, 3283 }; 3284 3285 static int __init 3286 jme_init_module(void) 3287 { 3288 pr_info("JMicron JMC2XX ethernet driver version %s\n", DRV_VERSION); 3289 return pci_register_driver(&jme_driver); 3290 } 3291 3292 static void __exit 3293 jme_cleanup_module(void) 3294 { 3295 pci_unregister_driver(&jme_driver); 3296 } 3297 3298 module_init(jme_init_module); 3299 module_exit(jme_cleanup_module); 3300 3301 MODULE_AUTHOR("Guo-Fu Tseng <cooldavid@cooldavid.org>"); 3302 MODULE_DESCRIPTION("JMicron JMC2x0 PCI Express Ethernet driver"); 3303 MODULE_LICENSE("GPL"); 3304 MODULE_VERSION(DRV_VERSION); 3305 MODULE_DEVICE_TABLE(pci, jme_pci_tbl); 3306