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 47static int force_pseudohp = -1; 48static int no_pseudohp = -1; 49static int no_extplug = -1; 50module_param(force_pseudohp, int, 0); 51MODULE_PARM_DESC(force_pseudohp, 52 "Enable pseudo hot-plug feature manually by driver instead of BIOS."); 53module_param(no_pseudohp, int, 0); 54MODULE_PARM_DESC(no_pseudohp, "Disable pseudo hot-plug feature."); 55module_param(no_extplug, int, 0); 56MODULE_PARM_DESC(no_extplug, 57 "Do not use external plug signal for pseudo hot-plug."); 58 59static int 60jme_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 65read_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 89static void 90jme_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 111static inline void 112jme_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 136static void 137jme_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 163static inline void 164jme_mac_rxclk_off(struct jme_adapter *jme) 165{ 166 jme->reg_gpreg1 |= GPREG1_RXCLKOFF; 167 jwrite32f(jme, JME_GPREG1, jme->reg_gpreg1); 168} 169 170static inline void 171jme_mac_rxclk_on(struct jme_adapter *jme) 172{ 173 jme->reg_gpreg1 &= ~GPREG1_RXCLKOFF; 174 jwrite32f(jme, JME_GPREG1, jme->reg_gpreg1); 175} 176 177static inline void 178jme_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 184static inline void 185jme_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 195static inline void 196jme_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 202static inline void 203jme_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 210static inline void 211jme_assert_ghc_reset(struct jme_adapter *jme) 212{ 213 jme->reg_ghc |= GHC_SWRST; 214 jwrite32f(jme, JME_GHC, jme->reg_ghc); 215} 216 217static inline void 218jme_clear_ghc_reset(struct jme_adapter *jme) 219{ 220 jme->reg_ghc &= ~GHC_SWRST; 221 jwrite32f(jme, JME_GHC, jme->reg_ghc); 222} 223 224static inline void 225jme_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 271static inline void 272jme_clear_pm(struct jme_adapter *jme) 273{ 274 jwrite32(jme, JME_PMCS, PMCS_STMASK | jme->reg_pmcs); 275} 276 277static int 278jme_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 307static void 308jme_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 327static inline void 328jme_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 360static void 361jme_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 382static inline void 383jme_stop_irq(struct jme_adapter *jme) 384{ 385 /* 386 * Disable Interrupts 387 */ 388 jwrite32f(jme, JME_IENC, INTR_ENABLE); 389} 390 391static u32 392jme_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 404static inline void 405jme_set_phyfifo_5level(struct jme_adapter *jme) 406{ 407 jme_mdio_write(jme->dev, jme->mii_if.phy_id, 27, 0x0004); 408} 409 410static inline void 411jme_set_phyfifo_8level(struct jme_adapter *jme) 412{ 413 jme_mdio_write(jme->dev, jme->mii_if.phy_id, 27, 0x0000); 414} 415 416static int 417jme_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 558out: 559 return rc; 560} 561 562static int 563jme_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 599err_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 605err_set_null: 606 txring->desc = NULL; 607 txring->dmaalloc = 0; 608 txring->dma = 0; 609 txring->bufinf = NULL; 610 611 return -ENOMEM; 612} 613 614static void 615jme_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 653static inline void 654jme_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 688static inline void 689jme_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 699static inline void 700jme_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 727static void 728jme_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 748static int 749jme_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 779static void 780jme_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 798static void 799jme_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 825static int 826jme_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 868err_free_rxring: 869 dma_free_coherent(&(jme->pdev->dev), 870 RX_RING_ALLOC_SIZE(jme->rx_ring_size), 871 rxring->alloc, 872 rxring->dmaalloc); 873err_set_null: 874 rxring->desc = NULL; 875 rxring->dmaalloc = 0; 876 rxring->dma = 0; 877 rxring->bufinf = NULL; 878 879 return -ENOMEM; 880} 881 882static inline void 883jme_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 925static inline void 926jme_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 937static inline void 938jme_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 965static u16 966jme_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 991static int 992jme_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 1020static void 1021jme_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 1078static int 1079jme_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 1132out: 1133 atomic_set(&rxring->next_to_clean, i); 1134 1135out_inc: 1136 atomic_inc(&jme->rx_cleaning); 1137 1138 return limit > 0 ? limit : 0; 1139 1140} 1141 1142static void 1143jme_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 1159static void 1160jme_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 1181static void 1182jme_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 1192static inline void 1193jme_stop_pcc_timer(struct jme_adapter *jme) 1194{ 1195 jwrite32(jme, JME_TMCSR, 0); 1196} 1197 1198static void 1199jme_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 1214static void 1215jme_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 1238static inline void 1239jme_polling_mode(struct jme_adapter *jme) 1240{ 1241 jme_set_rx_pcc(jme, PCC_OFF); 1242} 1243 1244static inline void 1245jme_interrupt_mode(struct jme_adapter *jme) 1246{ 1247 jme_set_rx_pcc(jme, PCC_P1); 1248} 1249 1250static inline int 1251jme_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 1258static void 1259jme_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 1277static void 1278jme_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 1293static void 1294jme_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 1362err_out_free_rx_resources: 1363 jme_free_rx_resources(jme); 1364out_enable_tasklet: 1365 tasklet_enable(&jme->txclean_task); 1366 tasklet_hi_enable(&jme->rxclean_task); 1367 tasklet_hi_enable(&jme->rxempty_task); 1368out: 1369 atomic_inc(&jme->link_changing); 1370} 1371 1372static void 1373jme_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 1383static int 1384jme_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 1407static void 1408jme_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 1430static void 1431jme_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 1444static void 1445jme_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 1522out: 1523 atomic_inc(&jme->tx_cleaning); 1524} 1525 1526static void 1527jme_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 1580out_reenable: 1581 /* 1582 * Re-enable interrupt 1583 */ 1584 jwrite32f(jme, JME_IENS, INTR_ENABLE); 1585} 1586 1587static irqreturn_t 1588jme_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 1613static irqreturn_t 1614jme_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 1627static void 1628jme_reset_link(struct jme_adapter *jme) 1629{ 1630 jwrite32(jme, JME_TMCSR, TMCSR_SWIT); 1631} 1632 1633static void 1634jme_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 1645static int 1646jme_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 1678static void 1679jme_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 1689static inline void 1690jme_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, ®); 1700 reg &= ~PE1_GPREG0_PBG; 1701 reg |= PE1_GPREG0_ENBG; 1702 pci_write_config_dword(jme->pdev, PCI_PRIV_PE1, reg); 1703} 1704 1705static inline void 1706jme_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, ®); 1716 reg &= ~PE1_GPREG0_PBG; 1717 reg |= PE1_GPREG0_PDD3COLD; 1718 pci_write_config_dword(jme->pdev, PCI_PRIV_PE1, reg); 1719} 1720 1721static inline void 1722jme_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 1734static inline void 1735jme_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 1747static int 1748jme_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 1759static void 1760jme_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 1771static int 1772jme_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 1803static int 1804jme_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 1853static int 1854jme_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 1884err_out: 1885 netif_stop_queue(netdev); 1886 netif_carrier_off(netdev); 1887 return rc; 1888} 1889 1890static void 1891jme_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 */ 1911static void 1912jme_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 1924static void 1925jme_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 1937static int 1938jme_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 1966static int 1967jme_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 1986static void 1987jme_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 2021static void 2022jme_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 2051static int 2052jme_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 2064static int 2065jme_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 2094static void 2095jme_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 2126static inline void 2127jme_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 2135static int 2136jme_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 2183static void 2184jme_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 2217static netdev_tx_t 2218jme_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 2252static void 2253jme_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 2268static int 2269jme_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 2285static void 2286jme_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 2319static int 2320jme_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 2341static void 2342jme_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 2357static 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 2370static 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 2388static void 2389jme_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 2399static int 2400jme_get_regs_len(struct net_device *netdev) 2401{ 2402 return JME_REG_LEN; 2403} 2404 2405static void 2406mmapio_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 2414static void 2415mdio_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 2424static void 2425jme_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 2448static int 2449jme_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 2485static int 2486jme_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 2513static void 2514jme_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 2531static int 2532jme_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 2580static void 2581jme_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 2598static int 2599jme_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 2625static int 2626jme_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 2638static int 2639jme_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 2672static int 2673jme_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 2701static u32 2702jme_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 2708static u32 2709jme_get_msglevel(struct net_device *netdev) 2710{ 2711 struct jme_adapter *jme = netdev_priv(netdev); 2712 return jme->msg_enable; 2713} 2714 2715static void 2716jme_set_msglevel(struct net_device *netdev, u32 value) 2717{ 2718 struct jme_adapter *jme = netdev_priv(netdev); 2719 jme->msg_enable = value; 2720} 2721 2722static netdev_features_t 2723jme_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 2730static int 2731jme_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 2746static int 2747jme_nway_reset(struct net_device *netdev) 2748{ 2749 struct jme_adapter *jme = netdev_priv(netdev); 2750 jme_restart_an(jme); 2751 return 0; 2752} 2753 2754static u8 2755jme_smb_read(struct jme_adapter *jme, unsigned int addr) 2756{ 2757 u32 val; 2758 int to; 2759 2760 val = jread32(jme, JME_SMBCSR); 2761 to = JME_SMB_BUSY_TIMEOUT; 2762 while ((val & SMBCSR_BUSY) && --to) { 2763 msleep(1); 2764 val = jread32(jme, JME_SMBCSR); 2765 } 2766 if (!to) { 2767 netif_err(jme, hw, jme->dev, "SMB Bus Busy\n"); 2768 return 0xFF; 2769 } 2770 2771 jwrite32(jme, JME_SMBINTF, 2772 ((addr << SMBINTF_HWADDR_SHIFT) & SMBINTF_HWADDR) | 2773 SMBINTF_HWRWN_READ | 2774 SMBINTF_HWCMD); 2775 2776 val = jread32(jme, JME_SMBINTF); 2777 to = JME_SMB_BUSY_TIMEOUT; 2778 while ((val & SMBINTF_HWCMD) && --to) { 2779 msleep(1); 2780 val = jread32(jme, JME_SMBINTF); 2781 } 2782 if (!to) { 2783 netif_err(jme, hw, jme->dev, "SMB Bus Busy\n"); 2784 return 0xFF; 2785 } 2786 2787 return (val & SMBINTF_HWDATR) >> SMBINTF_HWDATR_SHIFT; 2788} 2789 2790static void 2791jme_smb_write(struct jme_adapter *jme, unsigned int addr, u8 data) 2792{ 2793 u32 val; 2794 int to; 2795 2796 val = jread32(jme, JME_SMBCSR); 2797 to = JME_SMB_BUSY_TIMEOUT; 2798 while ((val & SMBCSR_BUSY) && --to) { 2799 msleep(1); 2800 val = jread32(jme, JME_SMBCSR); 2801 } 2802 if (!to) { 2803 netif_err(jme, hw, jme->dev, "SMB Bus Busy\n"); 2804 return; 2805 } 2806 2807 jwrite32(jme, JME_SMBINTF, 2808 ((data << SMBINTF_HWDATW_SHIFT) & SMBINTF_HWDATW) | 2809 ((addr << SMBINTF_HWADDR_SHIFT) & SMBINTF_HWADDR) | 2810 SMBINTF_HWRWN_WRITE | 2811 SMBINTF_HWCMD); 2812 2813 val = jread32(jme, JME_SMBINTF); 2814 to = JME_SMB_BUSY_TIMEOUT; 2815 while ((val & SMBINTF_HWCMD) && --to) { 2816 msleep(1); 2817 val = jread32(jme, JME_SMBINTF); 2818 } 2819 if (!to) { 2820 netif_err(jme, hw, jme->dev, "SMB Bus Busy\n"); 2821 return; 2822 } 2823 2824 mdelay(2); 2825} 2826 2827static int 2828jme_get_eeprom_len(struct net_device *netdev) 2829{ 2830 struct jme_adapter *jme = netdev_priv(netdev); 2831 u32 val; 2832 val = jread32(jme, JME_SMBCSR); 2833 return (val & SMBCSR_EEPROMD) ? JME_SMB_LEN : 0; 2834} 2835 2836static int 2837jme_get_eeprom(struct net_device *netdev, 2838 struct ethtool_eeprom *eeprom, u8 *data) 2839{ 2840 struct jme_adapter *jme = netdev_priv(netdev); 2841 int i, offset = eeprom->offset, len = eeprom->len; 2842 2843 /* 2844 * ethtool will check the boundary for us 2845 */ 2846 eeprom->magic = JME_EEPROM_MAGIC; 2847 for (i = 0 ; i < len ; ++i) 2848 data[i] = jme_smb_read(jme, i + offset); 2849 2850 return 0; 2851} 2852 2853static int 2854jme_set_eeprom(struct net_device *netdev, 2855 struct ethtool_eeprom *eeprom, u8 *data) 2856{ 2857 struct jme_adapter *jme = netdev_priv(netdev); 2858 int i, offset = eeprom->offset, len = eeprom->len; 2859 2860 if (eeprom->magic != JME_EEPROM_MAGIC) 2861 return -EINVAL; 2862 2863 /* 2864 * ethtool will check the boundary for us 2865 */ 2866 for (i = 0 ; i < len ; ++i) 2867 jme_smb_write(jme, i + offset, data[i]); 2868 2869 return 0; 2870} 2871 2872static const struct ethtool_ops jme_ethtool_ops = { 2873 .get_drvinfo = jme_get_drvinfo, 2874 .get_regs_len = jme_get_regs_len, 2875 .get_regs = jme_get_regs, 2876 .get_coalesce = jme_get_coalesce, 2877 .set_coalesce = jme_set_coalesce, 2878 .get_pauseparam = jme_get_pauseparam, 2879 .set_pauseparam = jme_set_pauseparam, 2880 .get_wol = jme_get_wol, 2881 .set_wol = jme_set_wol, 2882 .get_settings = jme_get_settings, 2883 .set_settings = jme_set_settings, 2884 .get_link = jme_get_link, 2885 .get_msglevel = jme_get_msglevel, 2886 .set_msglevel = jme_set_msglevel, 2887 .nway_reset = jme_nway_reset, 2888 .get_eeprom_len = jme_get_eeprom_len, 2889 .get_eeprom = jme_get_eeprom, 2890 .set_eeprom = jme_set_eeprom, 2891}; 2892 2893static int 2894jme_pci_dma64(struct pci_dev *pdev) 2895{ 2896 if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250 && 2897 !pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) 2898 if (!pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64))) 2899 return 1; 2900 2901 if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250 && 2902 !pci_set_dma_mask(pdev, DMA_BIT_MASK(40))) 2903 if (!pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(40))) 2904 return 1; 2905 2906 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) 2907 if (!pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32))) 2908 return 0; 2909 2910 return -1; 2911} 2912 2913static inline void 2914jme_phy_init(struct jme_adapter *jme) 2915{ 2916 u16 reg26; 2917 2918 reg26 = jme_mdio_read(jme->dev, jme->mii_if.phy_id, 26); 2919 jme_mdio_write(jme->dev, jme->mii_if.phy_id, 26, reg26 | 0x1000); 2920} 2921 2922static inline void 2923jme_check_hw_ver(struct jme_adapter *jme) 2924{ 2925 u32 chipmode; 2926 2927 chipmode = jread32(jme, JME_CHIPMODE); 2928 2929 jme->fpgaver = (chipmode & CM_FPGAVER_MASK) >> CM_FPGAVER_SHIFT; 2930 jme->chiprev = (chipmode & CM_CHIPREV_MASK) >> CM_CHIPREV_SHIFT; 2931 jme->chip_main_rev = jme->chiprev & 0xF; 2932 jme->chip_sub_rev = (jme->chiprev >> 4) & 0xF; 2933} 2934 2935static const struct net_device_ops jme_netdev_ops = { 2936 .ndo_open = jme_open, 2937 .ndo_stop = jme_close, 2938 .ndo_validate_addr = eth_validate_addr, 2939 .ndo_do_ioctl = jme_ioctl, 2940 .ndo_start_xmit = jme_start_xmit, 2941 .ndo_set_mac_address = jme_set_macaddr, 2942 .ndo_set_rx_mode = jme_set_multi, 2943 .ndo_change_mtu = jme_change_mtu, 2944 .ndo_tx_timeout = jme_tx_timeout, 2945 .ndo_fix_features = jme_fix_features, 2946 .ndo_set_features = jme_set_features, 2947}; 2948 2949static int __devinit 2950jme_init_one(struct pci_dev *pdev, 2951 const struct pci_device_id *ent) 2952{ 2953 int rc = 0, using_dac, i; 2954 struct net_device *netdev; 2955 struct jme_adapter *jme; 2956 u16 bmcr, bmsr; 2957 u32 apmc; 2958 2959 /* 2960 * set up PCI device basics 2961 */ 2962 rc = pci_enable_device(pdev); 2963 if (rc) { 2964 pr_err("Cannot enable PCI device\n"); 2965 goto err_out; 2966 } 2967 2968 using_dac = jme_pci_dma64(pdev); 2969 if (using_dac < 0) { 2970 pr_err("Cannot set PCI DMA Mask\n"); 2971 rc = -EIO; 2972 goto err_out_disable_pdev; 2973 } 2974 2975 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) { 2976 pr_err("No PCI resource region found\n"); 2977 rc = -ENOMEM; 2978 goto err_out_disable_pdev; 2979 } 2980 2981 rc = pci_request_regions(pdev, DRV_NAME); 2982 if (rc) { 2983 pr_err("Cannot obtain PCI resource region\n"); 2984 goto err_out_disable_pdev; 2985 } 2986 2987 pci_set_master(pdev); 2988 2989 /* 2990 * alloc and init net device 2991 */ 2992 netdev = alloc_etherdev(sizeof(*jme)); 2993 if (!netdev) { 2994 rc = -ENOMEM; 2995 goto err_out_release_regions; 2996 } 2997 netdev->netdev_ops = &jme_netdev_ops; 2998 netdev->ethtool_ops = &jme_ethtool_ops; 2999 netdev->watchdog_timeo = TX_TIMEOUT; 3000 netdev->hw_features = NETIF_F_IP_CSUM | 3001 NETIF_F_IPV6_CSUM | 3002 NETIF_F_SG | 3003 NETIF_F_TSO | 3004 NETIF_F_TSO6 | 3005 NETIF_F_RXCSUM; 3006 netdev->features = NETIF_F_IP_CSUM | 3007 NETIF_F_IPV6_CSUM | 3008 NETIF_F_SG | 3009 NETIF_F_TSO | 3010 NETIF_F_TSO6 | 3011 NETIF_F_HW_VLAN_TX | 3012 NETIF_F_HW_VLAN_RX; 3013 if (using_dac) 3014 netdev->features |= NETIF_F_HIGHDMA; 3015 3016 SET_NETDEV_DEV(netdev, &pdev->dev); 3017 pci_set_drvdata(pdev, netdev); 3018 3019 /* 3020 * init adapter info 3021 */ 3022 jme = netdev_priv(netdev); 3023 jme->pdev = pdev; 3024 jme->dev = netdev; 3025 jme->jme_rx = netif_rx; 3026 jme->old_mtu = netdev->mtu = 1500; 3027 jme->phylink = 0; 3028 jme->tx_ring_size = 1 << 10; 3029 jme->tx_ring_mask = jme->tx_ring_size - 1; 3030 jme->tx_wake_threshold = 1 << 9; 3031 jme->rx_ring_size = 1 << 9; 3032 jme->rx_ring_mask = jme->rx_ring_size - 1; 3033 jme->msg_enable = JME_DEF_MSG_ENABLE; 3034 jme->regs = ioremap(pci_resource_start(pdev, 0), 3035 pci_resource_len(pdev, 0)); 3036 if (!(jme->regs)) { 3037 pr_err("Mapping PCI resource region error\n"); 3038 rc = -ENOMEM; 3039 goto err_out_free_netdev; 3040 } 3041 3042 if (no_pseudohp) { 3043 apmc = jread32(jme, JME_APMC) & ~JME_APMC_PSEUDO_HP_EN; 3044 jwrite32(jme, JME_APMC, apmc); 3045 } else if (force_pseudohp) { 3046 apmc = jread32(jme, JME_APMC) | JME_APMC_PSEUDO_HP_EN; 3047 jwrite32(jme, JME_APMC, apmc); 3048 } 3049 3050 NETIF_NAPI_SET(netdev, &jme->napi, jme_poll, jme->rx_ring_size >> 2) 3051 3052 spin_lock_init(&jme->phy_lock); 3053 spin_lock_init(&jme->macaddr_lock); 3054 spin_lock_init(&jme->rxmcs_lock); 3055 3056 atomic_set(&jme->link_changing, 1); 3057 atomic_set(&jme->rx_cleaning, 1); 3058 atomic_set(&jme->tx_cleaning, 1); 3059 atomic_set(&jme->rx_empty, 1); 3060 3061 tasklet_init(&jme->pcc_task, 3062 jme_pcc_tasklet, 3063 (unsigned long) jme); 3064 tasklet_init(&jme->linkch_task, 3065 jme_link_change_tasklet, 3066 (unsigned long) jme); 3067 tasklet_init(&jme->txclean_task, 3068 jme_tx_clean_tasklet, 3069 (unsigned long) jme); 3070 tasklet_init(&jme->rxclean_task, 3071 jme_rx_clean_tasklet, 3072 (unsigned long) jme); 3073 tasklet_init(&jme->rxempty_task, 3074 jme_rx_empty_tasklet, 3075 (unsigned long) jme); 3076 tasklet_disable_nosync(&jme->linkch_task); 3077 tasklet_disable_nosync(&jme->txclean_task); 3078 tasklet_disable_nosync(&jme->rxclean_task); 3079 tasklet_disable_nosync(&jme->rxempty_task); 3080 jme->dpi.cur = PCC_P1; 3081 3082 jme->reg_ghc = 0; 3083 jme->reg_rxcs = RXCS_DEFAULT; 3084 jme->reg_rxmcs = RXMCS_DEFAULT; 3085 jme->reg_txpfc = 0; 3086 jme->reg_pmcs = PMCS_MFEN; 3087 jme->reg_gpreg1 = GPREG1_DEFAULT; 3088 3089 if (jme->reg_rxmcs & RXMCS_CHECKSUM) 3090 netdev->features |= NETIF_F_RXCSUM; 3091 3092 /* 3093 * Get Max Read Req Size from PCI Config Space 3094 */ 3095 pci_read_config_byte(pdev, PCI_DCSR_MRRS, &jme->mrrs); 3096 jme->mrrs &= PCI_DCSR_MRRS_MASK; 3097 switch (jme->mrrs) { 3098 case MRRS_128B: 3099 jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_128B; 3100 break; 3101 case MRRS_256B: 3102 jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_256B; 3103 break; 3104 default: 3105 jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_512B; 3106 break; 3107 } 3108 3109 /* 3110 * Must check before reset_mac_processor 3111 */ 3112 jme_check_hw_ver(jme); 3113 jme->mii_if.dev = netdev; 3114 if (jme->fpgaver) { 3115 jme->mii_if.phy_id = 0; 3116 for (i = 1 ; i < 32 ; ++i) { 3117 bmcr = jme_mdio_read(netdev, i, MII_BMCR); 3118 bmsr = jme_mdio_read(netdev, i, MII_BMSR); 3119 if (bmcr != 0xFFFFU && (bmcr != 0 || bmsr != 0)) { 3120 jme->mii_if.phy_id = i; 3121 break; 3122 } 3123 } 3124 3125 if (!jme->mii_if.phy_id) { 3126 rc = -EIO; 3127 pr_err("Can not find phy_id\n"); 3128 goto err_out_unmap; 3129 } 3130 3131 jme->reg_ghc |= GHC_LINK_POLL; 3132 } else { 3133 jme->mii_if.phy_id = 1; 3134 } 3135 if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250) 3136 jme->mii_if.supports_gmii = true; 3137 else 3138 jme->mii_if.supports_gmii = false; 3139 jme->mii_if.phy_id_mask = 0x1F; 3140 jme->mii_if.reg_num_mask = 0x1F; 3141 jme->mii_if.mdio_read = jme_mdio_read; 3142 jme->mii_if.mdio_write = jme_mdio_write; 3143 3144 jme_clear_pm(jme); 3145 pci_set_power_state(jme->pdev, PCI_D0); 3146 device_set_wakeup_enable(&pdev->dev, true); 3147 3148 jme_set_phyfifo_5level(jme); 3149 jme->pcirev = pdev->revision; 3150 if (!jme->fpgaver) 3151 jme_phy_init(jme); 3152 jme_phy_off(jme); 3153 3154 /* 3155 * Reset MAC processor and reload EEPROM for MAC Address 3156 */ 3157 jme_reset_mac_processor(jme); 3158 rc = jme_reload_eeprom(jme); 3159 if (rc) { 3160 pr_err("Reload eeprom for reading MAC Address error\n"); 3161 goto err_out_unmap; 3162 } 3163 jme_load_macaddr(netdev); 3164 3165 /* 3166 * Tell stack that we are not ready to work until open() 3167 */ 3168 netif_carrier_off(netdev); 3169 3170 rc = register_netdev(netdev); 3171 if (rc) { 3172 pr_err("Cannot register net device\n"); 3173 goto err_out_unmap; 3174 } 3175 3176 netif_info(jme, probe, jme->dev, "%s%s chiprev:%x pcirev:%x macaddr:%pM\n", 3177 (jme->pdev->device == PCI_DEVICE_ID_JMICRON_JMC250) ? 3178 "JMC250 Gigabit Ethernet" : 3179 (jme->pdev->device == PCI_DEVICE_ID_JMICRON_JMC260) ? 3180 "JMC260 Fast Ethernet" : "Unknown", 3181 (jme->fpgaver != 0) ? " (FPGA)" : "", 3182 (jme->fpgaver != 0) ? jme->fpgaver : jme->chiprev, 3183 jme->pcirev, netdev->dev_addr); 3184 3185 return 0; 3186 3187err_out_unmap: 3188 iounmap(jme->regs); 3189err_out_free_netdev: 3190 pci_set_drvdata(pdev, NULL); 3191 free_netdev(netdev); 3192err_out_release_regions: 3193 pci_release_regions(pdev); 3194err_out_disable_pdev: 3195 pci_disable_device(pdev); 3196err_out: 3197 return rc; 3198} 3199 3200static void __devexit 3201jme_remove_one(struct pci_dev *pdev) 3202{ 3203 struct net_device *netdev = pci_get_drvdata(pdev); 3204 struct jme_adapter *jme = netdev_priv(netdev); 3205 3206 unregister_netdev(netdev); 3207 iounmap(jme->regs); 3208 pci_set_drvdata(pdev, NULL); 3209 free_netdev(netdev); 3210 pci_release_regions(pdev); 3211 pci_disable_device(pdev); 3212 3213} 3214 3215static void 3216jme_shutdown(struct pci_dev *pdev) 3217{ 3218 struct net_device *netdev = pci_get_drvdata(pdev); 3219 struct jme_adapter *jme = netdev_priv(netdev); 3220 3221 jme_powersave_phy(jme); 3222 pci_pme_active(pdev, true); 3223} 3224 3225#ifdef CONFIG_PM_SLEEP 3226static int 3227jme_suspend(struct device *dev) 3228{ 3229 struct pci_dev *pdev = to_pci_dev(dev); 3230 struct net_device *netdev = pci_get_drvdata(pdev); 3231 struct jme_adapter *jme = netdev_priv(netdev); 3232 3233 if (!netif_running(netdev)) 3234 return 0; 3235 3236 atomic_dec(&jme->link_changing); 3237 3238 netif_device_detach(netdev); 3239 netif_stop_queue(netdev); 3240 jme_stop_irq(jme); 3241 3242 tasklet_disable(&jme->txclean_task); 3243 tasklet_disable(&jme->rxclean_task); 3244 tasklet_disable(&jme->rxempty_task); 3245 3246 if (netif_carrier_ok(netdev)) { 3247 if (test_bit(JME_FLAG_POLL, &jme->flags)) 3248 jme_polling_mode(jme); 3249 3250 jme_stop_pcc_timer(jme); 3251 jme_disable_rx_engine(jme); 3252 jme_disable_tx_engine(jme); 3253 jme_reset_mac_processor(jme); 3254 jme_free_rx_resources(jme); 3255 jme_free_tx_resources(jme); 3256 netif_carrier_off(netdev); 3257 jme->phylink = 0; 3258 } 3259 3260 tasklet_enable(&jme->txclean_task); 3261 tasklet_hi_enable(&jme->rxclean_task); 3262 tasklet_hi_enable(&jme->rxempty_task); 3263 3264 jme_powersave_phy(jme); 3265 3266 return 0; 3267} 3268 3269static int 3270jme_resume(struct device *dev) 3271{ 3272 struct pci_dev *pdev = to_pci_dev(dev); 3273 struct net_device *netdev = pci_get_drvdata(pdev); 3274 struct jme_adapter *jme = netdev_priv(netdev); 3275 3276 if (!netif_running(netdev)) 3277 return 0; 3278 3279 jme_clear_pm(jme); 3280 jme_phy_on(jme); 3281 if (test_bit(JME_FLAG_SSET, &jme->flags)) 3282 jme_set_settings(netdev, &jme->old_ecmd); 3283 else 3284 jme_reset_phy_processor(jme); 3285 jme_phy_calibration(jme); 3286 jme_phy_setEA(jme); 3287 jme_start_irq(jme); 3288 netif_device_attach(netdev); 3289 3290 atomic_inc(&jme->link_changing); 3291 3292 jme_reset_link(jme); 3293 3294 return 0; 3295} 3296 3297static SIMPLE_DEV_PM_OPS(jme_pm_ops, jme_suspend, jme_resume); 3298#define JME_PM_OPS (&jme_pm_ops) 3299 3300#else 3301 3302#define JME_PM_OPS NULL 3303#endif 3304 3305static DEFINE_PCI_DEVICE_TABLE(jme_pci_tbl) = { 3306 { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMC250) }, 3307 { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMC260) }, 3308 { } 3309}; 3310 3311static struct pci_driver jme_driver = { 3312 .name = DRV_NAME, 3313 .id_table = jme_pci_tbl, 3314 .probe = jme_init_one, 3315 .remove = __devexit_p(jme_remove_one), 3316 .shutdown = jme_shutdown, 3317 .driver.pm = JME_PM_OPS, 3318}; 3319 3320static int __init 3321jme_init_module(void) 3322{ 3323 pr_info("JMicron JMC2XX ethernet driver version %s\n", DRV_VERSION); 3324 return pci_register_driver(&jme_driver); 3325} 3326 3327static void __exit 3328jme_cleanup_module(void) 3329{ 3330 pci_unregister_driver(&jme_driver); 3331} 3332 3333module_init(jme_init_module); 3334module_exit(jme_cleanup_module); 3335 3336MODULE_AUTHOR("Guo-Fu Tseng <cooldavid@cooldavid.org>"); 3337MODULE_DESCRIPTION("JMicron JMC2x0 PCI Express Ethernet driver"); 3338MODULE_LICENSE("GPL"); 3339MODULE_VERSION(DRV_VERSION); 3340MODULE_DEVICE_TABLE(pci, jme_pci_tbl); 3341