1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Copyright(c) 2008 - 2009 Atheros Corporation. All rights reserved. 4 * 5 * Derived from Intel e1000 driver 6 * Copyright(c) 1999 - 2005 Intel Corporation. All rights reserved. 7 */ 8 9 #include "atl1c.h" 10 11 #define ATL1C_DRV_VERSION "1.0.1.1-NAPI" 12 char atl1c_driver_name[] = "atl1c"; 13 char atl1c_driver_version[] = ATL1C_DRV_VERSION; 14 15 /* 16 * atl1c_pci_tbl - PCI Device ID Table 17 * 18 * Wildcard entries (PCI_ANY_ID) should come last 19 * Last entry must be all 0s 20 * 21 * { Vendor ID, Device ID, SubVendor ID, SubDevice ID, 22 * Class, Class Mask, private data (not used) } 23 */ 24 static const struct pci_device_id atl1c_pci_tbl[] = { 25 {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, PCI_DEVICE_ID_ATTANSIC_L1C)}, 26 {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, PCI_DEVICE_ID_ATTANSIC_L2C)}, 27 {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, PCI_DEVICE_ID_ATHEROS_L2C_B)}, 28 {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, PCI_DEVICE_ID_ATHEROS_L2C_B2)}, 29 {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, PCI_DEVICE_ID_ATHEROS_L1D)}, 30 {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, PCI_DEVICE_ID_ATHEROS_L1D_2_0)}, 31 /* required last entry */ 32 { 0 } 33 }; 34 MODULE_DEVICE_TABLE(pci, atl1c_pci_tbl); 35 36 MODULE_AUTHOR("Jie Yang"); 37 MODULE_AUTHOR("Qualcomm Atheros Inc., <nic-devel@qualcomm.com>"); 38 MODULE_DESCRIPTION("Qualcomm Atheros 100/1000M Ethernet Network Driver"); 39 MODULE_LICENSE("GPL"); 40 MODULE_VERSION(ATL1C_DRV_VERSION); 41 42 static int atl1c_stop_mac(struct atl1c_hw *hw); 43 static void atl1c_disable_l0s_l1(struct atl1c_hw *hw); 44 static void atl1c_set_aspm(struct atl1c_hw *hw, u16 link_speed); 45 static void atl1c_start_mac(struct atl1c_adapter *adapter); 46 static void atl1c_clean_rx_irq(struct atl1c_adapter *adapter, 47 int *work_done, int work_to_do); 48 static int atl1c_up(struct atl1c_adapter *adapter); 49 static void atl1c_down(struct atl1c_adapter *adapter); 50 static int atl1c_reset_mac(struct atl1c_hw *hw); 51 static void atl1c_reset_dma_ring(struct atl1c_adapter *adapter); 52 static int atl1c_configure(struct atl1c_adapter *adapter); 53 static int atl1c_alloc_rx_buffer(struct atl1c_adapter *adapter); 54 55 56 static const u32 atl1c_default_msg = NETIF_MSG_DRV | NETIF_MSG_PROBE | 57 NETIF_MSG_LINK | NETIF_MSG_TIMER | NETIF_MSG_IFDOWN | NETIF_MSG_IFUP; 58 static void atl1c_pcie_patch(struct atl1c_hw *hw) 59 { 60 u32 mst_data, data; 61 62 /* pclk sel could switch to 25M */ 63 AT_READ_REG(hw, REG_MASTER_CTRL, &mst_data); 64 mst_data &= ~MASTER_CTRL_CLK_SEL_DIS; 65 AT_WRITE_REG(hw, REG_MASTER_CTRL, mst_data); 66 67 /* WoL/PCIE related settings */ 68 if (hw->nic_type == athr_l1c || hw->nic_type == athr_l2c) { 69 AT_READ_REG(hw, REG_PCIE_PHYMISC, &data); 70 data |= PCIE_PHYMISC_FORCE_RCV_DET; 71 AT_WRITE_REG(hw, REG_PCIE_PHYMISC, data); 72 } else { /* new dev set bit5 of MASTER */ 73 if (!(mst_data & MASTER_CTRL_WAKEN_25M)) 74 AT_WRITE_REG(hw, REG_MASTER_CTRL, 75 mst_data | MASTER_CTRL_WAKEN_25M); 76 } 77 /* aspm/PCIE setting only for l2cb 1.0 */ 78 if (hw->nic_type == athr_l2c_b && hw->revision_id == L2CB_V10) { 79 AT_READ_REG(hw, REG_PCIE_PHYMISC2, &data); 80 data = FIELD_SETX(data, PCIE_PHYMISC2_CDR_BW, 81 L2CB1_PCIE_PHYMISC2_CDR_BW); 82 data = FIELD_SETX(data, PCIE_PHYMISC2_L0S_TH, 83 L2CB1_PCIE_PHYMISC2_L0S_TH); 84 AT_WRITE_REG(hw, REG_PCIE_PHYMISC2, data); 85 /* extend L1 sync timer */ 86 AT_READ_REG(hw, REG_LINK_CTRL, &data); 87 data |= LINK_CTRL_EXT_SYNC; 88 AT_WRITE_REG(hw, REG_LINK_CTRL, data); 89 } 90 /* l2cb 1.x & l1d 1.x */ 91 if (hw->nic_type == athr_l2c_b || hw->nic_type == athr_l1d) { 92 AT_READ_REG(hw, REG_PM_CTRL, &data); 93 data |= PM_CTRL_L0S_BUFSRX_EN; 94 AT_WRITE_REG(hw, REG_PM_CTRL, data); 95 /* clear vendor msg */ 96 AT_READ_REG(hw, REG_DMA_DBG, &data); 97 AT_WRITE_REG(hw, REG_DMA_DBG, data & ~DMA_DBG_VENDOR_MSG); 98 } 99 } 100 101 /* FIXME: no need any more ? */ 102 /* 103 * atl1c_init_pcie - init PCIE module 104 */ 105 static void atl1c_reset_pcie(struct atl1c_hw *hw, u32 flag) 106 { 107 u32 data; 108 u32 pci_cmd; 109 struct pci_dev *pdev = hw->adapter->pdev; 110 int pos; 111 112 AT_READ_REG(hw, PCI_COMMAND, &pci_cmd); 113 pci_cmd &= ~PCI_COMMAND_INTX_DISABLE; 114 pci_cmd |= (PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER | 115 PCI_COMMAND_IO); 116 AT_WRITE_REG(hw, PCI_COMMAND, pci_cmd); 117 118 /* 119 * Clear any PowerSaveing Settings 120 */ 121 pci_enable_wake(pdev, PCI_D3hot, 0); 122 pci_enable_wake(pdev, PCI_D3cold, 0); 123 /* wol sts read-clear */ 124 AT_READ_REG(hw, REG_WOL_CTRL, &data); 125 AT_WRITE_REG(hw, REG_WOL_CTRL, 0); 126 127 /* 128 * Mask some pcie error bits 129 */ 130 pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_ERR); 131 if (pos) { 132 pci_read_config_dword(pdev, pos + PCI_ERR_UNCOR_SEVER, &data); 133 data &= ~(PCI_ERR_UNC_DLP | PCI_ERR_UNC_FCP); 134 pci_write_config_dword(pdev, pos + PCI_ERR_UNCOR_SEVER, data); 135 } 136 /* clear error status */ 137 pcie_capability_write_word(pdev, PCI_EXP_DEVSTA, 138 PCI_EXP_DEVSTA_NFED | 139 PCI_EXP_DEVSTA_FED | 140 PCI_EXP_DEVSTA_CED | 141 PCI_EXP_DEVSTA_URD); 142 143 AT_READ_REG(hw, REG_LTSSM_ID_CTRL, &data); 144 data &= ~LTSSM_ID_EN_WRO; 145 AT_WRITE_REG(hw, REG_LTSSM_ID_CTRL, data); 146 147 atl1c_pcie_patch(hw); 148 if (flag & ATL1C_PCIE_L0S_L1_DISABLE) 149 atl1c_disable_l0s_l1(hw); 150 151 msleep(5); 152 } 153 154 /** 155 * atl1c_irq_enable - Enable default interrupt generation settings 156 * @adapter: board private structure 157 */ 158 static inline void atl1c_irq_enable(struct atl1c_adapter *adapter) 159 { 160 if (likely(atomic_dec_and_test(&adapter->irq_sem))) { 161 AT_WRITE_REG(&adapter->hw, REG_ISR, 0x7FFFFFFF); 162 AT_WRITE_REG(&adapter->hw, REG_IMR, adapter->hw.intr_mask); 163 AT_WRITE_FLUSH(&adapter->hw); 164 } 165 } 166 167 /** 168 * atl1c_irq_disable - Mask off interrupt generation on the NIC 169 * @adapter: board private structure 170 */ 171 static inline void atl1c_irq_disable(struct atl1c_adapter *adapter) 172 { 173 atomic_inc(&adapter->irq_sem); 174 AT_WRITE_REG(&adapter->hw, REG_IMR, 0); 175 AT_WRITE_REG(&adapter->hw, REG_ISR, ISR_DIS_INT); 176 AT_WRITE_FLUSH(&adapter->hw); 177 synchronize_irq(adapter->pdev->irq); 178 } 179 180 /** 181 * atl1c_irq_reset - reset interrupt confiure on the NIC 182 * @adapter: board private structure 183 */ 184 static inline void atl1c_irq_reset(struct atl1c_adapter *adapter) 185 { 186 atomic_set(&adapter->irq_sem, 1); 187 atl1c_irq_enable(adapter); 188 } 189 190 /* 191 * atl1c_wait_until_idle - wait up to AT_HW_MAX_IDLE_DELAY reads 192 * of the idle status register until the device is actually idle 193 */ 194 static u32 atl1c_wait_until_idle(struct atl1c_hw *hw, u32 modu_ctrl) 195 { 196 int timeout; 197 u32 data; 198 199 for (timeout = 0; timeout < AT_HW_MAX_IDLE_DELAY; timeout++) { 200 AT_READ_REG(hw, REG_IDLE_STATUS, &data); 201 if ((data & modu_ctrl) == 0) 202 return 0; 203 msleep(1); 204 } 205 return data; 206 } 207 208 /** 209 * atl1c_phy_config - Timer Call-back 210 * @data: pointer to netdev cast into an unsigned long 211 */ 212 static void atl1c_phy_config(struct timer_list *t) 213 { 214 struct atl1c_adapter *adapter = from_timer(adapter, t, 215 phy_config_timer); 216 struct atl1c_hw *hw = &adapter->hw; 217 unsigned long flags; 218 219 spin_lock_irqsave(&adapter->mdio_lock, flags); 220 atl1c_restart_autoneg(hw); 221 spin_unlock_irqrestore(&adapter->mdio_lock, flags); 222 } 223 224 void atl1c_reinit_locked(struct atl1c_adapter *adapter) 225 { 226 WARN_ON(in_interrupt()); 227 atl1c_down(adapter); 228 atl1c_up(adapter); 229 clear_bit(__AT_RESETTING, &adapter->flags); 230 } 231 232 static void atl1c_check_link_status(struct atl1c_adapter *adapter) 233 { 234 struct atl1c_hw *hw = &adapter->hw; 235 struct net_device *netdev = adapter->netdev; 236 struct pci_dev *pdev = adapter->pdev; 237 int err; 238 unsigned long flags; 239 u16 speed, duplex, phy_data; 240 241 spin_lock_irqsave(&adapter->mdio_lock, flags); 242 /* MII_BMSR must read twise */ 243 atl1c_read_phy_reg(hw, MII_BMSR, &phy_data); 244 atl1c_read_phy_reg(hw, MII_BMSR, &phy_data); 245 spin_unlock_irqrestore(&adapter->mdio_lock, flags); 246 247 if ((phy_data & BMSR_LSTATUS) == 0) { 248 /* link down */ 249 netif_carrier_off(netdev); 250 hw->hibernate = true; 251 if (atl1c_reset_mac(hw) != 0) 252 if (netif_msg_hw(adapter)) 253 dev_warn(&pdev->dev, "reset mac failed\n"); 254 atl1c_set_aspm(hw, SPEED_0); 255 atl1c_post_phy_linkchg(hw, SPEED_0); 256 atl1c_reset_dma_ring(adapter); 257 atl1c_configure(adapter); 258 } else { 259 /* Link Up */ 260 hw->hibernate = false; 261 spin_lock_irqsave(&adapter->mdio_lock, flags); 262 err = atl1c_get_speed_and_duplex(hw, &speed, &duplex); 263 spin_unlock_irqrestore(&adapter->mdio_lock, flags); 264 if (unlikely(err)) 265 return; 266 /* link result is our setting */ 267 if (adapter->link_speed != speed || 268 adapter->link_duplex != duplex) { 269 adapter->link_speed = speed; 270 adapter->link_duplex = duplex; 271 atl1c_set_aspm(hw, speed); 272 atl1c_post_phy_linkchg(hw, speed); 273 atl1c_start_mac(adapter); 274 if (netif_msg_link(adapter)) 275 dev_info(&pdev->dev, 276 "%s: %s NIC Link is Up<%d Mbps %s>\n", 277 atl1c_driver_name, netdev->name, 278 adapter->link_speed, 279 adapter->link_duplex == FULL_DUPLEX ? 280 "Full Duplex" : "Half Duplex"); 281 } 282 if (!netif_carrier_ok(netdev)) 283 netif_carrier_on(netdev); 284 } 285 } 286 287 static void atl1c_link_chg_event(struct atl1c_adapter *adapter) 288 { 289 struct net_device *netdev = adapter->netdev; 290 struct pci_dev *pdev = adapter->pdev; 291 u16 phy_data; 292 u16 link_up; 293 294 spin_lock(&adapter->mdio_lock); 295 atl1c_read_phy_reg(&adapter->hw, MII_BMSR, &phy_data); 296 atl1c_read_phy_reg(&adapter->hw, MII_BMSR, &phy_data); 297 spin_unlock(&adapter->mdio_lock); 298 link_up = phy_data & BMSR_LSTATUS; 299 /* notify upper layer link down ASAP */ 300 if (!link_up) { 301 if (netif_carrier_ok(netdev)) { 302 /* old link state: Up */ 303 netif_carrier_off(netdev); 304 if (netif_msg_link(adapter)) 305 dev_info(&pdev->dev, 306 "%s: %s NIC Link is Down\n", 307 atl1c_driver_name, netdev->name); 308 adapter->link_speed = SPEED_0; 309 } 310 } 311 312 set_bit(ATL1C_WORK_EVENT_LINK_CHANGE, &adapter->work_event); 313 schedule_work(&adapter->common_task); 314 } 315 316 static void atl1c_common_task(struct work_struct *work) 317 { 318 struct atl1c_adapter *adapter; 319 struct net_device *netdev; 320 321 adapter = container_of(work, struct atl1c_adapter, common_task); 322 netdev = adapter->netdev; 323 324 if (test_bit(__AT_DOWN, &adapter->flags)) 325 return; 326 327 if (test_and_clear_bit(ATL1C_WORK_EVENT_RESET, &adapter->work_event)) { 328 netif_device_detach(netdev); 329 atl1c_down(adapter); 330 atl1c_up(adapter); 331 netif_device_attach(netdev); 332 } 333 334 if (test_and_clear_bit(ATL1C_WORK_EVENT_LINK_CHANGE, 335 &adapter->work_event)) { 336 atl1c_irq_disable(adapter); 337 atl1c_check_link_status(adapter); 338 atl1c_irq_enable(adapter); 339 } 340 } 341 342 343 static void atl1c_del_timer(struct atl1c_adapter *adapter) 344 { 345 del_timer_sync(&adapter->phy_config_timer); 346 } 347 348 349 /** 350 * atl1c_tx_timeout - Respond to a Tx Hang 351 * @netdev: network interface device structure 352 */ 353 static void atl1c_tx_timeout(struct net_device *netdev) 354 { 355 struct atl1c_adapter *adapter = netdev_priv(netdev); 356 357 /* Do the reset outside of interrupt context */ 358 set_bit(ATL1C_WORK_EVENT_RESET, &adapter->work_event); 359 schedule_work(&adapter->common_task); 360 } 361 362 /** 363 * atl1c_set_multi - Multicast and Promiscuous mode set 364 * @netdev: network interface device structure 365 * 366 * The set_multi entry point is called whenever the multicast address 367 * list or the network interface flags are updated. This routine is 368 * responsible for configuring the hardware for proper multicast, 369 * promiscuous mode, and all-multi behavior. 370 */ 371 static void atl1c_set_multi(struct net_device *netdev) 372 { 373 struct atl1c_adapter *adapter = netdev_priv(netdev); 374 struct atl1c_hw *hw = &adapter->hw; 375 struct netdev_hw_addr *ha; 376 u32 mac_ctrl_data; 377 u32 hash_value; 378 379 /* Check for Promiscuous and All Multicast modes */ 380 AT_READ_REG(hw, REG_MAC_CTRL, &mac_ctrl_data); 381 382 if (netdev->flags & IFF_PROMISC) { 383 mac_ctrl_data |= MAC_CTRL_PROMIS_EN; 384 } else if (netdev->flags & IFF_ALLMULTI) { 385 mac_ctrl_data |= MAC_CTRL_MC_ALL_EN; 386 mac_ctrl_data &= ~MAC_CTRL_PROMIS_EN; 387 } else { 388 mac_ctrl_data &= ~(MAC_CTRL_PROMIS_EN | MAC_CTRL_MC_ALL_EN); 389 } 390 391 AT_WRITE_REG(hw, REG_MAC_CTRL, mac_ctrl_data); 392 393 /* clear the old settings from the multicast hash table */ 394 AT_WRITE_REG(hw, REG_RX_HASH_TABLE, 0); 395 AT_WRITE_REG_ARRAY(hw, REG_RX_HASH_TABLE, 1, 0); 396 397 /* comoute mc addresses' hash value ,and put it into hash table */ 398 netdev_for_each_mc_addr(ha, netdev) { 399 hash_value = atl1c_hash_mc_addr(hw, ha->addr); 400 atl1c_hash_set(hw, hash_value); 401 } 402 } 403 404 static void __atl1c_vlan_mode(netdev_features_t features, u32 *mac_ctrl_data) 405 { 406 if (features & NETIF_F_HW_VLAN_CTAG_RX) { 407 /* enable VLAN tag insert/strip */ 408 *mac_ctrl_data |= MAC_CTRL_RMV_VLAN; 409 } else { 410 /* disable VLAN tag insert/strip */ 411 *mac_ctrl_data &= ~MAC_CTRL_RMV_VLAN; 412 } 413 } 414 415 static void atl1c_vlan_mode(struct net_device *netdev, 416 netdev_features_t features) 417 { 418 struct atl1c_adapter *adapter = netdev_priv(netdev); 419 struct pci_dev *pdev = adapter->pdev; 420 u32 mac_ctrl_data = 0; 421 422 if (netif_msg_pktdata(adapter)) 423 dev_dbg(&pdev->dev, "atl1c_vlan_mode\n"); 424 425 atl1c_irq_disable(adapter); 426 AT_READ_REG(&adapter->hw, REG_MAC_CTRL, &mac_ctrl_data); 427 __atl1c_vlan_mode(features, &mac_ctrl_data); 428 AT_WRITE_REG(&adapter->hw, REG_MAC_CTRL, mac_ctrl_data); 429 atl1c_irq_enable(adapter); 430 } 431 432 static void atl1c_restore_vlan(struct atl1c_adapter *adapter) 433 { 434 struct pci_dev *pdev = adapter->pdev; 435 436 if (netif_msg_pktdata(adapter)) 437 dev_dbg(&pdev->dev, "atl1c_restore_vlan\n"); 438 atl1c_vlan_mode(adapter->netdev, adapter->netdev->features); 439 } 440 441 /** 442 * atl1c_set_mac - Change the Ethernet Address of the NIC 443 * @netdev: network interface device structure 444 * @p: pointer to an address structure 445 * 446 * Returns 0 on success, negative on failure 447 */ 448 static int atl1c_set_mac_addr(struct net_device *netdev, void *p) 449 { 450 struct atl1c_adapter *adapter = netdev_priv(netdev); 451 struct sockaddr *addr = p; 452 453 if (!is_valid_ether_addr(addr->sa_data)) 454 return -EADDRNOTAVAIL; 455 456 if (netif_running(netdev)) 457 return -EBUSY; 458 459 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); 460 memcpy(adapter->hw.mac_addr, addr->sa_data, netdev->addr_len); 461 462 atl1c_hw_set_mac_addr(&adapter->hw, adapter->hw.mac_addr); 463 464 return 0; 465 } 466 467 static void atl1c_set_rxbufsize(struct atl1c_adapter *adapter, 468 struct net_device *dev) 469 { 470 unsigned int head_size; 471 int mtu = dev->mtu; 472 473 adapter->rx_buffer_len = mtu > AT_RX_BUF_SIZE ? 474 roundup(mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN, 8) : AT_RX_BUF_SIZE; 475 476 head_size = SKB_DATA_ALIGN(adapter->rx_buffer_len + NET_SKB_PAD) + 477 SKB_DATA_ALIGN(sizeof(struct skb_shared_info)); 478 adapter->rx_frag_size = roundup_pow_of_two(head_size); 479 } 480 481 static netdev_features_t atl1c_fix_features(struct net_device *netdev, 482 netdev_features_t features) 483 { 484 /* 485 * Since there is no support for separate rx/tx vlan accel 486 * enable/disable make sure tx flag is always in same state as rx. 487 */ 488 if (features & NETIF_F_HW_VLAN_CTAG_RX) 489 features |= NETIF_F_HW_VLAN_CTAG_TX; 490 else 491 features &= ~NETIF_F_HW_VLAN_CTAG_TX; 492 493 if (netdev->mtu > MAX_TSO_FRAME_SIZE) 494 features &= ~(NETIF_F_TSO | NETIF_F_TSO6); 495 496 return features; 497 } 498 499 static int atl1c_set_features(struct net_device *netdev, 500 netdev_features_t features) 501 { 502 netdev_features_t changed = netdev->features ^ features; 503 504 if (changed & NETIF_F_HW_VLAN_CTAG_RX) 505 atl1c_vlan_mode(netdev, features); 506 507 return 0; 508 } 509 510 static void atl1c_set_max_mtu(struct net_device *netdev) 511 { 512 struct atl1c_adapter *adapter = netdev_priv(netdev); 513 struct atl1c_hw *hw = &adapter->hw; 514 515 switch (hw->nic_type) { 516 /* These (GbE) devices support jumbo packets, max_mtu 6122 */ 517 case athr_l1c: 518 case athr_l1d: 519 case athr_l1d_2: 520 netdev->max_mtu = MAX_JUMBO_FRAME_SIZE - 521 (ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN); 522 break; 523 /* The 10/100 devices don't support jumbo packets, max_mtu 1500 */ 524 default: 525 netdev->max_mtu = ETH_DATA_LEN; 526 break; 527 } 528 } 529 530 /** 531 * atl1c_change_mtu - Change the Maximum Transfer Unit 532 * @netdev: network interface device structure 533 * @new_mtu: new value for maximum frame size 534 * 535 * Returns 0 on success, negative on failure 536 */ 537 static int atl1c_change_mtu(struct net_device *netdev, int new_mtu) 538 { 539 struct atl1c_adapter *adapter = netdev_priv(netdev); 540 541 /* set MTU */ 542 if (netif_running(netdev)) { 543 while (test_and_set_bit(__AT_RESETTING, &adapter->flags)) 544 msleep(1); 545 netdev->mtu = new_mtu; 546 adapter->hw.max_frame_size = new_mtu; 547 atl1c_set_rxbufsize(adapter, netdev); 548 atl1c_down(adapter); 549 netdev_update_features(netdev); 550 atl1c_up(adapter); 551 clear_bit(__AT_RESETTING, &adapter->flags); 552 } 553 return 0; 554 } 555 556 /* 557 * caller should hold mdio_lock 558 */ 559 static int atl1c_mdio_read(struct net_device *netdev, int phy_id, int reg_num) 560 { 561 struct atl1c_adapter *adapter = netdev_priv(netdev); 562 u16 result; 563 564 atl1c_read_phy_reg(&adapter->hw, reg_num, &result); 565 return result; 566 } 567 568 static void atl1c_mdio_write(struct net_device *netdev, int phy_id, 569 int reg_num, int val) 570 { 571 struct atl1c_adapter *adapter = netdev_priv(netdev); 572 573 atl1c_write_phy_reg(&adapter->hw, reg_num, val); 574 } 575 576 static int atl1c_mii_ioctl(struct net_device *netdev, 577 struct ifreq *ifr, int cmd) 578 { 579 struct atl1c_adapter *adapter = netdev_priv(netdev); 580 struct pci_dev *pdev = adapter->pdev; 581 struct mii_ioctl_data *data = if_mii(ifr); 582 unsigned long flags; 583 int retval = 0; 584 585 if (!netif_running(netdev)) 586 return -EINVAL; 587 588 spin_lock_irqsave(&adapter->mdio_lock, flags); 589 switch (cmd) { 590 case SIOCGMIIPHY: 591 data->phy_id = 0; 592 break; 593 594 case SIOCGMIIREG: 595 if (atl1c_read_phy_reg(&adapter->hw, data->reg_num & 0x1F, 596 &data->val_out)) { 597 retval = -EIO; 598 goto out; 599 } 600 break; 601 602 case SIOCSMIIREG: 603 if (data->reg_num & ~(0x1F)) { 604 retval = -EFAULT; 605 goto out; 606 } 607 608 dev_dbg(&pdev->dev, "<atl1c_mii_ioctl> write %x %x", 609 data->reg_num, data->val_in); 610 if (atl1c_write_phy_reg(&adapter->hw, 611 data->reg_num, data->val_in)) { 612 retval = -EIO; 613 goto out; 614 } 615 break; 616 617 default: 618 retval = -EOPNOTSUPP; 619 break; 620 } 621 out: 622 spin_unlock_irqrestore(&adapter->mdio_lock, flags); 623 return retval; 624 } 625 626 static int atl1c_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) 627 { 628 switch (cmd) { 629 case SIOCGMIIPHY: 630 case SIOCGMIIREG: 631 case SIOCSMIIREG: 632 return atl1c_mii_ioctl(netdev, ifr, cmd); 633 default: 634 return -EOPNOTSUPP; 635 } 636 } 637 638 /** 639 * atl1c_alloc_queues - Allocate memory for all rings 640 * @adapter: board private structure to initialize 641 * 642 */ 643 static int atl1c_alloc_queues(struct atl1c_adapter *adapter) 644 { 645 return 0; 646 } 647 648 static void atl1c_set_mac_type(struct atl1c_hw *hw) 649 { 650 switch (hw->device_id) { 651 case PCI_DEVICE_ID_ATTANSIC_L2C: 652 hw->nic_type = athr_l2c; 653 break; 654 case PCI_DEVICE_ID_ATTANSIC_L1C: 655 hw->nic_type = athr_l1c; 656 break; 657 case PCI_DEVICE_ID_ATHEROS_L2C_B: 658 hw->nic_type = athr_l2c_b; 659 break; 660 case PCI_DEVICE_ID_ATHEROS_L2C_B2: 661 hw->nic_type = athr_l2c_b2; 662 break; 663 case PCI_DEVICE_ID_ATHEROS_L1D: 664 hw->nic_type = athr_l1d; 665 break; 666 case PCI_DEVICE_ID_ATHEROS_L1D_2_0: 667 hw->nic_type = athr_l1d_2; 668 break; 669 default: 670 break; 671 } 672 } 673 674 static int atl1c_setup_mac_funcs(struct atl1c_hw *hw) 675 { 676 u32 link_ctrl_data; 677 678 atl1c_set_mac_type(hw); 679 AT_READ_REG(hw, REG_LINK_CTRL, &link_ctrl_data); 680 681 hw->ctrl_flags = ATL1C_INTR_MODRT_ENABLE | 682 ATL1C_TXQ_MODE_ENHANCE; 683 hw->ctrl_flags |= ATL1C_ASPM_L0S_SUPPORT | 684 ATL1C_ASPM_L1_SUPPORT; 685 hw->ctrl_flags |= ATL1C_ASPM_CTRL_MON; 686 687 if (hw->nic_type == athr_l1c || 688 hw->nic_type == athr_l1d || 689 hw->nic_type == athr_l1d_2) 690 hw->link_cap_flags |= ATL1C_LINK_CAP_1000M; 691 return 0; 692 } 693 694 struct atl1c_platform_patch { 695 u16 pci_did; 696 u8 pci_revid; 697 u16 subsystem_vid; 698 u16 subsystem_did; 699 u32 patch_flag; 700 #define ATL1C_LINK_PATCH 0x1 701 }; 702 static const struct atl1c_platform_patch plats[] = { 703 {0x2060, 0xC1, 0x1019, 0x8152, 0x1}, 704 {0x2060, 0xC1, 0x1019, 0x2060, 0x1}, 705 {0x2060, 0xC1, 0x1019, 0xE000, 0x1}, 706 {0x2062, 0xC0, 0x1019, 0x8152, 0x1}, 707 {0x2062, 0xC0, 0x1019, 0x2062, 0x1}, 708 {0x2062, 0xC0, 0x1458, 0xE000, 0x1}, 709 {0x2062, 0xC1, 0x1019, 0x8152, 0x1}, 710 {0x2062, 0xC1, 0x1019, 0x2062, 0x1}, 711 {0x2062, 0xC1, 0x1458, 0xE000, 0x1}, 712 {0x2062, 0xC1, 0x1565, 0x2802, 0x1}, 713 {0x2062, 0xC1, 0x1565, 0x2801, 0x1}, 714 {0x1073, 0xC0, 0x1019, 0x8151, 0x1}, 715 {0x1073, 0xC0, 0x1019, 0x1073, 0x1}, 716 {0x1073, 0xC0, 0x1458, 0xE000, 0x1}, 717 {0x1083, 0xC0, 0x1458, 0xE000, 0x1}, 718 {0x1083, 0xC0, 0x1019, 0x8151, 0x1}, 719 {0x1083, 0xC0, 0x1019, 0x1083, 0x1}, 720 {0x1083, 0xC0, 0x1462, 0x7680, 0x1}, 721 {0x1083, 0xC0, 0x1565, 0x2803, 0x1}, 722 {0}, 723 }; 724 725 static void atl1c_patch_assign(struct atl1c_hw *hw) 726 { 727 struct pci_dev *pdev = hw->adapter->pdev; 728 u32 misc_ctrl; 729 int i = 0; 730 731 hw->msi_lnkpatch = false; 732 733 while (plats[i].pci_did != 0) { 734 if (plats[i].pci_did == hw->device_id && 735 plats[i].pci_revid == hw->revision_id && 736 plats[i].subsystem_vid == hw->subsystem_vendor_id && 737 plats[i].subsystem_did == hw->subsystem_id) { 738 if (plats[i].patch_flag & ATL1C_LINK_PATCH) 739 hw->msi_lnkpatch = true; 740 } 741 i++; 742 } 743 744 if (hw->device_id == PCI_DEVICE_ID_ATHEROS_L2C_B2 && 745 hw->revision_id == L2CB_V21) { 746 /* config access mode */ 747 pci_write_config_dword(pdev, REG_PCIE_IND_ACC_ADDR, 748 REG_PCIE_DEV_MISC_CTRL); 749 pci_read_config_dword(pdev, REG_PCIE_IND_ACC_DATA, &misc_ctrl); 750 misc_ctrl &= ~0x100; 751 pci_write_config_dword(pdev, REG_PCIE_IND_ACC_ADDR, 752 REG_PCIE_DEV_MISC_CTRL); 753 pci_write_config_dword(pdev, REG_PCIE_IND_ACC_DATA, misc_ctrl); 754 } 755 } 756 /** 757 * atl1c_sw_init - Initialize general software structures (struct atl1c_adapter) 758 * @adapter: board private structure to initialize 759 * 760 * atl1c_sw_init initializes the Adapter private data structure. 761 * Fields are initialized based on PCI device information and 762 * OS network device settings (MTU size). 763 */ 764 static int atl1c_sw_init(struct atl1c_adapter *adapter) 765 { 766 struct atl1c_hw *hw = &adapter->hw; 767 struct pci_dev *pdev = adapter->pdev; 768 u32 revision; 769 770 771 adapter->wol = 0; 772 device_set_wakeup_enable(&pdev->dev, false); 773 adapter->link_speed = SPEED_0; 774 adapter->link_duplex = FULL_DUPLEX; 775 adapter->tpd_ring[0].count = 1024; 776 adapter->rfd_ring.count = 512; 777 778 hw->vendor_id = pdev->vendor; 779 hw->device_id = pdev->device; 780 hw->subsystem_vendor_id = pdev->subsystem_vendor; 781 hw->subsystem_id = pdev->subsystem_device; 782 pci_read_config_dword(pdev, PCI_CLASS_REVISION, &revision); 783 hw->revision_id = revision & 0xFF; 784 /* before link up, we assume hibernate is true */ 785 hw->hibernate = true; 786 hw->media_type = MEDIA_TYPE_AUTO_SENSOR; 787 if (atl1c_setup_mac_funcs(hw) != 0) { 788 dev_err(&pdev->dev, "set mac function pointers failed\n"); 789 return -1; 790 } 791 atl1c_patch_assign(hw); 792 793 hw->intr_mask = IMR_NORMAL_MASK; 794 hw->phy_configured = false; 795 hw->preamble_len = 7; 796 hw->max_frame_size = adapter->netdev->mtu; 797 hw->autoneg_advertised = ADVERTISED_Autoneg; 798 hw->indirect_tab = 0xE4E4E4E4; 799 hw->base_cpu = 0; 800 801 hw->ict = 50000; /* 100ms */ 802 hw->smb_timer = 200000; /* 400ms */ 803 hw->rx_imt = 200; 804 hw->tx_imt = 1000; 805 806 hw->tpd_burst = 5; 807 hw->rfd_burst = 8; 808 hw->dma_order = atl1c_dma_ord_out; 809 hw->dmar_block = atl1c_dma_req_1024; 810 811 if (atl1c_alloc_queues(adapter)) { 812 dev_err(&pdev->dev, "Unable to allocate memory for queues\n"); 813 return -ENOMEM; 814 } 815 /* TODO */ 816 atl1c_set_rxbufsize(adapter, adapter->netdev); 817 atomic_set(&adapter->irq_sem, 1); 818 spin_lock_init(&adapter->mdio_lock); 819 set_bit(__AT_DOWN, &adapter->flags); 820 821 return 0; 822 } 823 824 static inline void atl1c_clean_buffer(struct pci_dev *pdev, 825 struct atl1c_buffer *buffer_info) 826 { 827 u16 pci_driection; 828 if (buffer_info->flags & ATL1C_BUFFER_FREE) 829 return; 830 if (buffer_info->dma) { 831 if (buffer_info->flags & ATL1C_PCIMAP_FROMDEVICE) 832 pci_driection = PCI_DMA_FROMDEVICE; 833 else 834 pci_driection = PCI_DMA_TODEVICE; 835 836 if (buffer_info->flags & ATL1C_PCIMAP_SINGLE) 837 pci_unmap_single(pdev, buffer_info->dma, 838 buffer_info->length, pci_driection); 839 else if (buffer_info->flags & ATL1C_PCIMAP_PAGE) 840 pci_unmap_page(pdev, buffer_info->dma, 841 buffer_info->length, pci_driection); 842 } 843 if (buffer_info->skb) 844 dev_consume_skb_any(buffer_info->skb); 845 buffer_info->dma = 0; 846 buffer_info->skb = NULL; 847 ATL1C_SET_BUFFER_STATE(buffer_info, ATL1C_BUFFER_FREE); 848 } 849 /** 850 * atl1c_clean_tx_ring - Free Tx-skb 851 * @adapter: board private structure 852 */ 853 static void atl1c_clean_tx_ring(struct atl1c_adapter *adapter, 854 enum atl1c_trans_queue type) 855 { 856 struct atl1c_tpd_ring *tpd_ring = &adapter->tpd_ring[type]; 857 struct atl1c_buffer *buffer_info; 858 struct pci_dev *pdev = adapter->pdev; 859 u16 index, ring_count; 860 861 ring_count = tpd_ring->count; 862 for (index = 0; index < ring_count; index++) { 863 buffer_info = &tpd_ring->buffer_info[index]; 864 atl1c_clean_buffer(pdev, buffer_info); 865 } 866 867 netdev_reset_queue(adapter->netdev); 868 869 /* Zero out Tx-buffers */ 870 memset(tpd_ring->desc, 0, sizeof(struct atl1c_tpd_desc) * 871 ring_count); 872 atomic_set(&tpd_ring->next_to_clean, 0); 873 tpd_ring->next_to_use = 0; 874 } 875 876 /** 877 * atl1c_clean_rx_ring - Free rx-reservation skbs 878 * @adapter: board private structure 879 */ 880 static void atl1c_clean_rx_ring(struct atl1c_adapter *adapter) 881 { 882 struct atl1c_rfd_ring *rfd_ring = &adapter->rfd_ring; 883 struct atl1c_rrd_ring *rrd_ring = &adapter->rrd_ring; 884 struct atl1c_buffer *buffer_info; 885 struct pci_dev *pdev = adapter->pdev; 886 int j; 887 888 for (j = 0; j < rfd_ring->count; j++) { 889 buffer_info = &rfd_ring->buffer_info[j]; 890 atl1c_clean_buffer(pdev, buffer_info); 891 } 892 /* zero out the descriptor ring */ 893 memset(rfd_ring->desc, 0, rfd_ring->size); 894 rfd_ring->next_to_clean = 0; 895 rfd_ring->next_to_use = 0; 896 rrd_ring->next_to_use = 0; 897 rrd_ring->next_to_clean = 0; 898 } 899 900 /* 901 * Read / Write Ptr Initialize: 902 */ 903 static void atl1c_init_ring_ptrs(struct atl1c_adapter *adapter) 904 { 905 struct atl1c_tpd_ring *tpd_ring = adapter->tpd_ring; 906 struct atl1c_rfd_ring *rfd_ring = &adapter->rfd_ring; 907 struct atl1c_rrd_ring *rrd_ring = &adapter->rrd_ring; 908 struct atl1c_buffer *buffer_info; 909 int i, j; 910 911 for (i = 0; i < AT_MAX_TRANSMIT_QUEUE; i++) { 912 tpd_ring[i].next_to_use = 0; 913 atomic_set(&tpd_ring[i].next_to_clean, 0); 914 buffer_info = tpd_ring[i].buffer_info; 915 for (j = 0; j < tpd_ring->count; j++) 916 ATL1C_SET_BUFFER_STATE(&buffer_info[i], 917 ATL1C_BUFFER_FREE); 918 } 919 rfd_ring->next_to_use = 0; 920 rfd_ring->next_to_clean = 0; 921 rrd_ring->next_to_use = 0; 922 rrd_ring->next_to_clean = 0; 923 for (j = 0; j < rfd_ring->count; j++) { 924 buffer_info = &rfd_ring->buffer_info[j]; 925 ATL1C_SET_BUFFER_STATE(buffer_info, ATL1C_BUFFER_FREE); 926 } 927 } 928 929 /** 930 * atl1c_free_ring_resources - Free Tx / RX descriptor Resources 931 * @adapter: board private structure 932 * 933 * Free all transmit software resources 934 */ 935 static void atl1c_free_ring_resources(struct atl1c_adapter *adapter) 936 { 937 struct pci_dev *pdev = adapter->pdev; 938 939 pci_free_consistent(pdev, adapter->ring_header.size, 940 adapter->ring_header.desc, 941 adapter->ring_header.dma); 942 adapter->ring_header.desc = NULL; 943 944 /* Note: just free tdp_ring.buffer_info, 945 * it contain rfd_ring.buffer_info, do not double free */ 946 if (adapter->tpd_ring[0].buffer_info) { 947 kfree(adapter->tpd_ring[0].buffer_info); 948 adapter->tpd_ring[0].buffer_info = NULL; 949 } 950 if (adapter->rx_page) { 951 put_page(adapter->rx_page); 952 adapter->rx_page = NULL; 953 } 954 } 955 956 /** 957 * atl1c_setup_mem_resources - allocate Tx / RX descriptor resources 958 * @adapter: board private structure 959 * 960 * Return 0 on success, negative on failure 961 */ 962 static int atl1c_setup_ring_resources(struct atl1c_adapter *adapter) 963 { 964 struct pci_dev *pdev = adapter->pdev; 965 struct atl1c_tpd_ring *tpd_ring = adapter->tpd_ring; 966 struct atl1c_rfd_ring *rfd_ring = &adapter->rfd_ring; 967 struct atl1c_rrd_ring *rrd_ring = &adapter->rrd_ring; 968 struct atl1c_ring_header *ring_header = &adapter->ring_header; 969 int size; 970 int i; 971 int count = 0; 972 int rx_desc_count = 0; 973 u32 offset = 0; 974 975 rrd_ring->count = rfd_ring->count; 976 for (i = 1; i < AT_MAX_TRANSMIT_QUEUE; i++) 977 tpd_ring[i].count = tpd_ring[0].count; 978 979 /* 2 tpd queue, one high priority queue, 980 * another normal priority queue */ 981 size = sizeof(struct atl1c_buffer) * (tpd_ring->count * 2 + 982 rfd_ring->count); 983 tpd_ring->buffer_info = kzalloc(size, GFP_KERNEL); 984 if (unlikely(!tpd_ring->buffer_info)) 985 goto err_nomem; 986 987 for (i = 0; i < AT_MAX_TRANSMIT_QUEUE; i++) { 988 tpd_ring[i].buffer_info = 989 (tpd_ring->buffer_info + count); 990 count += tpd_ring[i].count; 991 } 992 993 rfd_ring->buffer_info = 994 (tpd_ring->buffer_info + count); 995 count += rfd_ring->count; 996 rx_desc_count += rfd_ring->count; 997 998 /* 999 * real ring DMA buffer 1000 * each ring/block may need up to 8 bytes for alignment, hence the 1001 * additional bytes tacked onto the end. 1002 */ 1003 ring_header->size = size = 1004 sizeof(struct atl1c_tpd_desc) * tpd_ring->count * 2 + 1005 sizeof(struct atl1c_rx_free_desc) * rx_desc_count + 1006 sizeof(struct atl1c_recv_ret_status) * rx_desc_count + 1007 8 * 4; 1008 1009 ring_header->desc = dma_alloc_coherent(&pdev->dev, ring_header->size, 1010 &ring_header->dma, GFP_KERNEL); 1011 if (unlikely(!ring_header->desc)) { 1012 dev_err(&pdev->dev, "could not get memory for DMA buffer\n"); 1013 goto err_nomem; 1014 } 1015 /* init TPD ring */ 1016 1017 tpd_ring[0].dma = roundup(ring_header->dma, 8); 1018 offset = tpd_ring[0].dma - ring_header->dma; 1019 for (i = 0; i < AT_MAX_TRANSMIT_QUEUE; i++) { 1020 tpd_ring[i].dma = ring_header->dma + offset; 1021 tpd_ring[i].desc = (u8 *) ring_header->desc + offset; 1022 tpd_ring[i].size = 1023 sizeof(struct atl1c_tpd_desc) * tpd_ring[i].count; 1024 offset += roundup(tpd_ring[i].size, 8); 1025 } 1026 /* init RFD ring */ 1027 rfd_ring->dma = ring_header->dma + offset; 1028 rfd_ring->desc = (u8 *) ring_header->desc + offset; 1029 rfd_ring->size = sizeof(struct atl1c_rx_free_desc) * rfd_ring->count; 1030 offset += roundup(rfd_ring->size, 8); 1031 1032 /* init RRD ring */ 1033 rrd_ring->dma = ring_header->dma + offset; 1034 rrd_ring->desc = (u8 *) ring_header->desc + offset; 1035 rrd_ring->size = sizeof(struct atl1c_recv_ret_status) * 1036 rrd_ring->count; 1037 offset += roundup(rrd_ring->size, 8); 1038 1039 return 0; 1040 1041 err_nomem: 1042 kfree(tpd_ring->buffer_info); 1043 return -ENOMEM; 1044 } 1045 1046 static void atl1c_configure_des_ring(struct atl1c_adapter *adapter) 1047 { 1048 struct atl1c_hw *hw = &adapter->hw; 1049 struct atl1c_rfd_ring *rfd_ring = &adapter->rfd_ring; 1050 struct atl1c_rrd_ring *rrd_ring = &adapter->rrd_ring; 1051 struct atl1c_tpd_ring *tpd_ring = (struct atl1c_tpd_ring *) 1052 adapter->tpd_ring; 1053 1054 /* TPD */ 1055 AT_WRITE_REG(hw, REG_TX_BASE_ADDR_HI, 1056 (u32)((tpd_ring[atl1c_trans_normal].dma & 1057 AT_DMA_HI_ADDR_MASK) >> 32)); 1058 /* just enable normal priority TX queue */ 1059 AT_WRITE_REG(hw, REG_TPD_PRI0_ADDR_LO, 1060 (u32)(tpd_ring[atl1c_trans_normal].dma & 1061 AT_DMA_LO_ADDR_MASK)); 1062 AT_WRITE_REG(hw, REG_TPD_PRI1_ADDR_LO, 1063 (u32)(tpd_ring[atl1c_trans_high].dma & 1064 AT_DMA_LO_ADDR_MASK)); 1065 AT_WRITE_REG(hw, REG_TPD_RING_SIZE, 1066 (u32)(tpd_ring[0].count & TPD_RING_SIZE_MASK)); 1067 1068 1069 /* RFD */ 1070 AT_WRITE_REG(hw, REG_RX_BASE_ADDR_HI, 1071 (u32)((rfd_ring->dma & AT_DMA_HI_ADDR_MASK) >> 32)); 1072 AT_WRITE_REG(hw, REG_RFD0_HEAD_ADDR_LO, 1073 (u32)(rfd_ring->dma & AT_DMA_LO_ADDR_MASK)); 1074 1075 AT_WRITE_REG(hw, REG_RFD_RING_SIZE, 1076 rfd_ring->count & RFD_RING_SIZE_MASK); 1077 AT_WRITE_REG(hw, REG_RX_BUF_SIZE, 1078 adapter->rx_buffer_len & RX_BUF_SIZE_MASK); 1079 1080 /* RRD */ 1081 AT_WRITE_REG(hw, REG_RRD0_HEAD_ADDR_LO, 1082 (u32)(rrd_ring->dma & AT_DMA_LO_ADDR_MASK)); 1083 AT_WRITE_REG(hw, REG_RRD_RING_SIZE, 1084 (rrd_ring->count & RRD_RING_SIZE_MASK)); 1085 1086 if (hw->nic_type == athr_l2c_b) { 1087 AT_WRITE_REG(hw, REG_SRAM_RXF_LEN, 0x02a0L); 1088 AT_WRITE_REG(hw, REG_SRAM_TXF_LEN, 0x0100L); 1089 AT_WRITE_REG(hw, REG_SRAM_RXF_ADDR, 0x029f0000L); 1090 AT_WRITE_REG(hw, REG_SRAM_RFD0_INFO, 0x02bf02a0L); 1091 AT_WRITE_REG(hw, REG_SRAM_TXF_ADDR, 0x03bf02c0L); 1092 AT_WRITE_REG(hw, REG_SRAM_TRD_ADDR, 0x03df03c0L); 1093 AT_WRITE_REG(hw, REG_TXF_WATER_MARK, 0); /* TX watermark, to enter l1 state.*/ 1094 AT_WRITE_REG(hw, REG_RXD_DMA_CTRL, 0); /* RXD threshold.*/ 1095 } 1096 /* Load all of base address above */ 1097 AT_WRITE_REG(hw, REG_LOAD_PTR, 1); 1098 } 1099 1100 static void atl1c_configure_tx(struct atl1c_adapter *adapter) 1101 { 1102 struct atl1c_hw *hw = &adapter->hw; 1103 int max_pay_load; 1104 u16 tx_offload_thresh; 1105 u32 txq_ctrl_data; 1106 1107 tx_offload_thresh = MAX_TSO_FRAME_SIZE; 1108 AT_WRITE_REG(hw, REG_TX_TSO_OFFLOAD_THRESH, 1109 (tx_offload_thresh >> 3) & TX_TSO_OFFLOAD_THRESH_MASK); 1110 max_pay_load = pcie_get_readrq(adapter->pdev) >> 8; 1111 hw->dmar_block = min_t(u32, max_pay_load, hw->dmar_block); 1112 /* 1113 * if BIOS had changed the dam-read-max-length to an invalid value, 1114 * restore it to default value 1115 */ 1116 if (hw->dmar_block < DEVICE_CTRL_MAXRRS_MIN) { 1117 pcie_set_readrq(adapter->pdev, 128 << DEVICE_CTRL_MAXRRS_MIN); 1118 hw->dmar_block = DEVICE_CTRL_MAXRRS_MIN; 1119 } 1120 txq_ctrl_data = 1121 hw->nic_type == athr_l2c_b || hw->nic_type == athr_l2c_b2 ? 1122 L2CB_TXQ_CFGV : L1C_TXQ_CFGV; 1123 1124 AT_WRITE_REG(hw, REG_TXQ_CTRL, txq_ctrl_data); 1125 } 1126 1127 static void atl1c_configure_rx(struct atl1c_adapter *adapter) 1128 { 1129 struct atl1c_hw *hw = &adapter->hw; 1130 u32 rxq_ctrl_data; 1131 1132 rxq_ctrl_data = (hw->rfd_burst & RXQ_RFD_BURST_NUM_MASK) << 1133 RXQ_RFD_BURST_NUM_SHIFT; 1134 1135 if (hw->ctrl_flags & ATL1C_RX_IPV6_CHKSUM) 1136 rxq_ctrl_data |= IPV6_CHKSUM_CTRL_EN; 1137 1138 /* aspm for gigabit */ 1139 if (hw->nic_type != athr_l1d_2 && (hw->device_id & 1) != 0) 1140 rxq_ctrl_data = FIELD_SETX(rxq_ctrl_data, ASPM_THRUPUT_LIMIT, 1141 ASPM_THRUPUT_LIMIT_100M); 1142 1143 AT_WRITE_REG(hw, REG_RXQ_CTRL, rxq_ctrl_data); 1144 } 1145 1146 static void atl1c_configure_dma(struct atl1c_adapter *adapter) 1147 { 1148 struct atl1c_hw *hw = &adapter->hw; 1149 u32 dma_ctrl_data; 1150 1151 dma_ctrl_data = FIELDX(DMA_CTRL_RORDER_MODE, DMA_CTRL_RORDER_MODE_OUT) | 1152 DMA_CTRL_RREQ_PRI_DATA | 1153 FIELDX(DMA_CTRL_RREQ_BLEN, hw->dmar_block) | 1154 FIELDX(DMA_CTRL_WDLY_CNT, DMA_CTRL_WDLY_CNT_DEF) | 1155 FIELDX(DMA_CTRL_RDLY_CNT, DMA_CTRL_RDLY_CNT_DEF); 1156 1157 AT_WRITE_REG(hw, REG_DMA_CTRL, dma_ctrl_data); 1158 } 1159 1160 /* 1161 * Stop the mac, transmit and receive units 1162 * hw - Struct containing variables accessed by shared code 1163 * return : 0 or idle status (if error) 1164 */ 1165 static int atl1c_stop_mac(struct atl1c_hw *hw) 1166 { 1167 u32 data; 1168 1169 AT_READ_REG(hw, REG_RXQ_CTRL, &data); 1170 data &= ~RXQ_CTRL_EN; 1171 AT_WRITE_REG(hw, REG_RXQ_CTRL, data); 1172 1173 AT_READ_REG(hw, REG_TXQ_CTRL, &data); 1174 data &= ~TXQ_CTRL_EN; 1175 AT_WRITE_REG(hw, REG_TXQ_CTRL, data); 1176 1177 atl1c_wait_until_idle(hw, IDLE_STATUS_RXQ_BUSY | IDLE_STATUS_TXQ_BUSY); 1178 1179 AT_READ_REG(hw, REG_MAC_CTRL, &data); 1180 data &= ~(MAC_CTRL_TX_EN | MAC_CTRL_RX_EN); 1181 AT_WRITE_REG(hw, REG_MAC_CTRL, data); 1182 1183 return (int)atl1c_wait_until_idle(hw, 1184 IDLE_STATUS_TXMAC_BUSY | IDLE_STATUS_RXMAC_BUSY); 1185 } 1186 1187 static void atl1c_start_mac(struct atl1c_adapter *adapter) 1188 { 1189 struct atl1c_hw *hw = &adapter->hw; 1190 u32 mac, txq, rxq; 1191 1192 hw->mac_duplex = adapter->link_duplex == FULL_DUPLEX ? true : false; 1193 hw->mac_speed = adapter->link_speed == SPEED_1000 ? 1194 atl1c_mac_speed_1000 : atl1c_mac_speed_10_100; 1195 1196 AT_READ_REG(hw, REG_TXQ_CTRL, &txq); 1197 AT_READ_REG(hw, REG_RXQ_CTRL, &rxq); 1198 AT_READ_REG(hw, REG_MAC_CTRL, &mac); 1199 1200 txq |= TXQ_CTRL_EN; 1201 rxq |= RXQ_CTRL_EN; 1202 mac |= MAC_CTRL_TX_EN | MAC_CTRL_TX_FLOW | 1203 MAC_CTRL_RX_EN | MAC_CTRL_RX_FLOW | 1204 MAC_CTRL_ADD_CRC | MAC_CTRL_PAD | 1205 MAC_CTRL_BC_EN | MAC_CTRL_SINGLE_PAUSE_EN | 1206 MAC_CTRL_HASH_ALG_CRC32; 1207 if (hw->mac_duplex) 1208 mac |= MAC_CTRL_DUPLX; 1209 else 1210 mac &= ~MAC_CTRL_DUPLX; 1211 mac = FIELD_SETX(mac, MAC_CTRL_SPEED, hw->mac_speed); 1212 mac = FIELD_SETX(mac, MAC_CTRL_PRMLEN, hw->preamble_len); 1213 1214 AT_WRITE_REG(hw, REG_TXQ_CTRL, txq); 1215 AT_WRITE_REG(hw, REG_RXQ_CTRL, rxq); 1216 AT_WRITE_REG(hw, REG_MAC_CTRL, mac); 1217 } 1218 1219 /* 1220 * Reset the transmit and receive units; mask and clear all interrupts. 1221 * hw - Struct containing variables accessed by shared code 1222 * return : 0 or idle status (if error) 1223 */ 1224 static int atl1c_reset_mac(struct atl1c_hw *hw) 1225 { 1226 struct atl1c_adapter *adapter = hw->adapter; 1227 struct pci_dev *pdev = adapter->pdev; 1228 u32 ctrl_data = 0; 1229 1230 atl1c_stop_mac(hw); 1231 /* 1232 * Issue Soft Reset to the MAC. This will reset the chip's 1233 * transmit, receive, DMA. It will not effect 1234 * the current PCI configuration. The global reset bit is self- 1235 * clearing, and should clear within a microsecond. 1236 */ 1237 AT_READ_REG(hw, REG_MASTER_CTRL, &ctrl_data); 1238 ctrl_data |= MASTER_CTRL_OOB_DIS; 1239 AT_WRITE_REG(hw, REG_MASTER_CTRL, ctrl_data | MASTER_CTRL_SOFT_RST); 1240 1241 AT_WRITE_FLUSH(hw); 1242 msleep(10); 1243 /* Wait at least 10ms for All module to be Idle */ 1244 1245 if (atl1c_wait_until_idle(hw, IDLE_STATUS_MASK)) { 1246 dev_err(&pdev->dev, 1247 "MAC state machine can't be idle since" 1248 " disabled for 10ms second\n"); 1249 return -1; 1250 } 1251 AT_WRITE_REG(hw, REG_MASTER_CTRL, ctrl_data); 1252 1253 /* driver control speed/duplex */ 1254 AT_READ_REG(hw, REG_MAC_CTRL, &ctrl_data); 1255 AT_WRITE_REG(hw, REG_MAC_CTRL, ctrl_data | MAC_CTRL_SPEED_MODE_SW); 1256 1257 /* clk switch setting */ 1258 AT_READ_REG(hw, REG_SERDES, &ctrl_data); 1259 switch (hw->nic_type) { 1260 case athr_l2c_b: 1261 ctrl_data &= ~(SERDES_PHY_CLK_SLOWDOWN | 1262 SERDES_MAC_CLK_SLOWDOWN); 1263 AT_WRITE_REG(hw, REG_SERDES, ctrl_data); 1264 break; 1265 case athr_l2c_b2: 1266 case athr_l1d_2: 1267 ctrl_data |= SERDES_PHY_CLK_SLOWDOWN | SERDES_MAC_CLK_SLOWDOWN; 1268 AT_WRITE_REG(hw, REG_SERDES, ctrl_data); 1269 break; 1270 default: 1271 break; 1272 } 1273 1274 return 0; 1275 } 1276 1277 static void atl1c_disable_l0s_l1(struct atl1c_hw *hw) 1278 { 1279 u16 ctrl_flags = hw->ctrl_flags; 1280 1281 hw->ctrl_flags &= ~(ATL1C_ASPM_L0S_SUPPORT | ATL1C_ASPM_L1_SUPPORT); 1282 atl1c_set_aspm(hw, SPEED_0); 1283 hw->ctrl_flags = ctrl_flags; 1284 } 1285 1286 /* 1287 * Set ASPM state. 1288 * Enable/disable L0s/L1 depend on link state. 1289 */ 1290 static void atl1c_set_aspm(struct atl1c_hw *hw, u16 link_speed) 1291 { 1292 u32 pm_ctrl_data; 1293 u32 link_l1_timer; 1294 1295 AT_READ_REG(hw, REG_PM_CTRL, &pm_ctrl_data); 1296 pm_ctrl_data &= ~(PM_CTRL_ASPM_L1_EN | 1297 PM_CTRL_ASPM_L0S_EN | 1298 PM_CTRL_MAC_ASPM_CHK); 1299 /* L1 timer */ 1300 if (hw->nic_type == athr_l2c_b2 || hw->nic_type == athr_l1d_2) { 1301 pm_ctrl_data &= ~PMCTRL_TXL1_AFTER_L0S; 1302 link_l1_timer = 1303 link_speed == SPEED_1000 || link_speed == SPEED_100 ? 1304 L1D_PMCTRL_L1_ENTRY_TM_16US : 1; 1305 pm_ctrl_data = FIELD_SETX(pm_ctrl_data, 1306 L1D_PMCTRL_L1_ENTRY_TM, link_l1_timer); 1307 } else { 1308 link_l1_timer = hw->nic_type == athr_l2c_b ? 1309 L2CB1_PM_CTRL_L1_ENTRY_TM : L1C_PM_CTRL_L1_ENTRY_TM; 1310 if (link_speed != SPEED_1000 && link_speed != SPEED_100) 1311 link_l1_timer = 1; 1312 pm_ctrl_data = FIELD_SETX(pm_ctrl_data, 1313 PM_CTRL_L1_ENTRY_TIMER, link_l1_timer); 1314 } 1315 1316 /* L0S/L1 enable */ 1317 if ((hw->ctrl_flags & ATL1C_ASPM_L0S_SUPPORT) && link_speed != SPEED_0) 1318 pm_ctrl_data |= PM_CTRL_ASPM_L0S_EN | PM_CTRL_MAC_ASPM_CHK; 1319 if (hw->ctrl_flags & ATL1C_ASPM_L1_SUPPORT) 1320 pm_ctrl_data |= PM_CTRL_ASPM_L1_EN | PM_CTRL_MAC_ASPM_CHK; 1321 1322 /* l2cb & l1d & l2cb2 & l1d2 */ 1323 if (hw->nic_type == athr_l2c_b || hw->nic_type == athr_l1d || 1324 hw->nic_type == athr_l2c_b2 || hw->nic_type == athr_l1d_2) { 1325 pm_ctrl_data = FIELD_SETX(pm_ctrl_data, 1326 PM_CTRL_PM_REQ_TIMER, PM_CTRL_PM_REQ_TO_DEF); 1327 pm_ctrl_data |= PM_CTRL_RCVR_WT_TIMER | 1328 PM_CTRL_SERDES_PD_EX_L1 | 1329 PM_CTRL_CLK_SWH_L1; 1330 pm_ctrl_data &= ~(PM_CTRL_SERDES_L1_EN | 1331 PM_CTRL_SERDES_PLL_L1_EN | 1332 PM_CTRL_SERDES_BUFS_RX_L1_EN | 1333 PM_CTRL_SA_DLY_EN | 1334 PM_CTRL_HOTRST); 1335 /* disable l0s if link down or l2cb */ 1336 if (link_speed == SPEED_0 || hw->nic_type == athr_l2c_b) 1337 pm_ctrl_data &= ~PM_CTRL_ASPM_L0S_EN; 1338 } else { /* l1c */ 1339 pm_ctrl_data = 1340 FIELD_SETX(pm_ctrl_data, PM_CTRL_L1_ENTRY_TIMER, 0); 1341 if (link_speed != SPEED_0) { 1342 pm_ctrl_data |= PM_CTRL_SERDES_L1_EN | 1343 PM_CTRL_SERDES_PLL_L1_EN | 1344 PM_CTRL_SERDES_BUFS_RX_L1_EN; 1345 pm_ctrl_data &= ~(PM_CTRL_SERDES_PD_EX_L1 | 1346 PM_CTRL_CLK_SWH_L1 | 1347 PM_CTRL_ASPM_L0S_EN | 1348 PM_CTRL_ASPM_L1_EN); 1349 } else { /* link down */ 1350 pm_ctrl_data |= PM_CTRL_CLK_SWH_L1; 1351 pm_ctrl_data &= ~(PM_CTRL_SERDES_L1_EN | 1352 PM_CTRL_SERDES_PLL_L1_EN | 1353 PM_CTRL_SERDES_BUFS_RX_L1_EN | 1354 PM_CTRL_ASPM_L0S_EN); 1355 } 1356 } 1357 AT_WRITE_REG(hw, REG_PM_CTRL, pm_ctrl_data); 1358 1359 return; 1360 } 1361 1362 /** 1363 * atl1c_configure - Configure Transmit&Receive Unit after Reset 1364 * @adapter: board private structure 1365 * 1366 * Configure the Tx /Rx unit of the MAC after a reset. 1367 */ 1368 static int atl1c_configure_mac(struct atl1c_adapter *adapter) 1369 { 1370 struct atl1c_hw *hw = &adapter->hw; 1371 u32 master_ctrl_data = 0; 1372 u32 intr_modrt_data; 1373 u32 data; 1374 1375 AT_READ_REG(hw, REG_MASTER_CTRL, &master_ctrl_data); 1376 master_ctrl_data &= ~(MASTER_CTRL_TX_ITIMER_EN | 1377 MASTER_CTRL_RX_ITIMER_EN | 1378 MASTER_CTRL_INT_RDCLR); 1379 /* clear interrupt status */ 1380 AT_WRITE_REG(hw, REG_ISR, 0xFFFFFFFF); 1381 /* Clear any WOL status */ 1382 AT_WRITE_REG(hw, REG_WOL_CTRL, 0); 1383 /* set Interrupt Clear Timer 1384 * HW will enable self to assert interrupt event to system after 1385 * waiting x-time for software to notify it accept interrupt. 1386 */ 1387 1388 data = CLK_GATING_EN_ALL; 1389 if (hw->ctrl_flags & ATL1C_CLK_GATING_EN) { 1390 if (hw->nic_type == athr_l2c_b) 1391 data &= ~CLK_GATING_RXMAC_EN; 1392 } else 1393 data = 0; 1394 AT_WRITE_REG(hw, REG_CLK_GATING_CTRL, data); 1395 1396 AT_WRITE_REG(hw, REG_INT_RETRIG_TIMER, 1397 hw->ict & INT_RETRIG_TIMER_MASK); 1398 1399 atl1c_configure_des_ring(adapter); 1400 1401 if (hw->ctrl_flags & ATL1C_INTR_MODRT_ENABLE) { 1402 intr_modrt_data = (hw->tx_imt & IRQ_MODRT_TIMER_MASK) << 1403 IRQ_MODRT_TX_TIMER_SHIFT; 1404 intr_modrt_data |= (hw->rx_imt & IRQ_MODRT_TIMER_MASK) << 1405 IRQ_MODRT_RX_TIMER_SHIFT; 1406 AT_WRITE_REG(hw, REG_IRQ_MODRT_TIMER_INIT, intr_modrt_data); 1407 master_ctrl_data |= 1408 MASTER_CTRL_TX_ITIMER_EN | MASTER_CTRL_RX_ITIMER_EN; 1409 } 1410 1411 if (hw->ctrl_flags & ATL1C_INTR_CLEAR_ON_READ) 1412 master_ctrl_data |= MASTER_CTRL_INT_RDCLR; 1413 1414 master_ctrl_data |= MASTER_CTRL_SA_TIMER_EN; 1415 AT_WRITE_REG(hw, REG_MASTER_CTRL, master_ctrl_data); 1416 1417 AT_WRITE_REG(hw, REG_SMB_STAT_TIMER, 1418 hw->smb_timer & SMB_STAT_TIMER_MASK); 1419 1420 /* set MTU */ 1421 AT_WRITE_REG(hw, REG_MTU, hw->max_frame_size + ETH_HLEN + 1422 VLAN_HLEN + ETH_FCS_LEN); 1423 1424 atl1c_configure_tx(adapter); 1425 atl1c_configure_rx(adapter); 1426 atl1c_configure_dma(adapter); 1427 1428 return 0; 1429 } 1430 1431 static int atl1c_configure(struct atl1c_adapter *adapter) 1432 { 1433 struct net_device *netdev = adapter->netdev; 1434 int num; 1435 1436 atl1c_init_ring_ptrs(adapter); 1437 atl1c_set_multi(netdev); 1438 atl1c_restore_vlan(adapter); 1439 1440 num = atl1c_alloc_rx_buffer(adapter); 1441 if (unlikely(num == 0)) 1442 return -ENOMEM; 1443 1444 if (atl1c_configure_mac(adapter)) 1445 return -EIO; 1446 1447 return 0; 1448 } 1449 1450 static void atl1c_update_hw_stats(struct atl1c_adapter *adapter) 1451 { 1452 u16 hw_reg_addr = 0; 1453 unsigned long *stats_item = NULL; 1454 u32 data; 1455 1456 /* update rx status */ 1457 hw_reg_addr = REG_MAC_RX_STATUS_BIN; 1458 stats_item = &adapter->hw_stats.rx_ok; 1459 while (hw_reg_addr <= REG_MAC_RX_STATUS_END) { 1460 AT_READ_REG(&adapter->hw, hw_reg_addr, &data); 1461 *stats_item += data; 1462 stats_item++; 1463 hw_reg_addr += 4; 1464 } 1465 /* update tx status */ 1466 hw_reg_addr = REG_MAC_TX_STATUS_BIN; 1467 stats_item = &adapter->hw_stats.tx_ok; 1468 while (hw_reg_addr <= REG_MAC_TX_STATUS_END) { 1469 AT_READ_REG(&adapter->hw, hw_reg_addr, &data); 1470 *stats_item += data; 1471 stats_item++; 1472 hw_reg_addr += 4; 1473 } 1474 } 1475 1476 /** 1477 * atl1c_get_stats - Get System Network Statistics 1478 * @netdev: network interface device structure 1479 * 1480 * Returns the address of the device statistics structure. 1481 * The statistics are actually updated from the timer callback. 1482 */ 1483 static struct net_device_stats *atl1c_get_stats(struct net_device *netdev) 1484 { 1485 struct atl1c_adapter *adapter = netdev_priv(netdev); 1486 struct atl1c_hw_stats *hw_stats = &adapter->hw_stats; 1487 struct net_device_stats *net_stats = &netdev->stats; 1488 1489 atl1c_update_hw_stats(adapter); 1490 net_stats->rx_bytes = hw_stats->rx_byte_cnt; 1491 net_stats->tx_bytes = hw_stats->tx_byte_cnt; 1492 net_stats->multicast = hw_stats->rx_mcast; 1493 net_stats->collisions = hw_stats->tx_1_col + 1494 hw_stats->tx_2_col + 1495 hw_stats->tx_late_col + 1496 hw_stats->tx_abort_col; 1497 1498 net_stats->rx_errors = hw_stats->rx_frag + 1499 hw_stats->rx_fcs_err + 1500 hw_stats->rx_len_err + 1501 hw_stats->rx_sz_ov + 1502 hw_stats->rx_rrd_ov + 1503 hw_stats->rx_align_err + 1504 hw_stats->rx_rxf_ov; 1505 1506 net_stats->rx_fifo_errors = hw_stats->rx_rxf_ov; 1507 net_stats->rx_length_errors = hw_stats->rx_len_err; 1508 net_stats->rx_crc_errors = hw_stats->rx_fcs_err; 1509 net_stats->rx_frame_errors = hw_stats->rx_align_err; 1510 net_stats->rx_dropped = hw_stats->rx_rrd_ov; 1511 1512 net_stats->tx_errors = hw_stats->tx_late_col + 1513 hw_stats->tx_abort_col + 1514 hw_stats->tx_underrun + 1515 hw_stats->tx_trunc; 1516 1517 net_stats->tx_fifo_errors = hw_stats->tx_underrun; 1518 net_stats->tx_aborted_errors = hw_stats->tx_abort_col; 1519 net_stats->tx_window_errors = hw_stats->tx_late_col; 1520 1521 net_stats->rx_packets = hw_stats->rx_ok + net_stats->rx_errors; 1522 net_stats->tx_packets = hw_stats->tx_ok + net_stats->tx_errors; 1523 1524 return net_stats; 1525 } 1526 1527 static inline void atl1c_clear_phy_int(struct atl1c_adapter *adapter) 1528 { 1529 u16 phy_data; 1530 1531 spin_lock(&adapter->mdio_lock); 1532 atl1c_read_phy_reg(&adapter->hw, MII_ISR, &phy_data); 1533 spin_unlock(&adapter->mdio_lock); 1534 } 1535 1536 static bool atl1c_clean_tx_irq(struct atl1c_adapter *adapter, 1537 enum atl1c_trans_queue type) 1538 { 1539 struct atl1c_tpd_ring *tpd_ring = &adapter->tpd_ring[type]; 1540 struct atl1c_buffer *buffer_info; 1541 struct pci_dev *pdev = adapter->pdev; 1542 u16 next_to_clean = atomic_read(&tpd_ring->next_to_clean); 1543 u16 hw_next_to_clean; 1544 u16 reg; 1545 unsigned int total_bytes = 0, total_packets = 0; 1546 1547 reg = type == atl1c_trans_high ? REG_TPD_PRI1_CIDX : REG_TPD_PRI0_CIDX; 1548 1549 AT_READ_REGW(&adapter->hw, reg, &hw_next_to_clean); 1550 1551 while (next_to_clean != hw_next_to_clean) { 1552 buffer_info = &tpd_ring->buffer_info[next_to_clean]; 1553 if (buffer_info->skb) { 1554 total_bytes += buffer_info->skb->len; 1555 total_packets++; 1556 } 1557 atl1c_clean_buffer(pdev, buffer_info); 1558 if (++next_to_clean == tpd_ring->count) 1559 next_to_clean = 0; 1560 atomic_set(&tpd_ring->next_to_clean, next_to_clean); 1561 } 1562 1563 netdev_completed_queue(adapter->netdev, total_packets, total_bytes); 1564 1565 if (netif_queue_stopped(adapter->netdev) && 1566 netif_carrier_ok(adapter->netdev)) { 1567 netif_wake_queue(adapter->netdev); 1568 } 1569 1570 return true; 1571 } 1572 1573 /** 1574 * atl1c_intr - Interrupt Handler 1575 * @irq: interrupt number 1576 * @data: pointer to a network interface device structure 1577 */ 1578 static irqreturn_t atl1c_intr(int irq, void *data) 1579 { 1580 struct net_device *netdev = data; 1581 struct atl1c_adapter *adapter = netdev_priv(netdev); 1582 struct pci_dev *pdev = adapter->pdev; 1583 struct atl1c_hw *hw = &adapter->hw; 1584 int max_ints = AT_MAX_INT_WORK; 1585 int handled = IRQ_NONE; 1586 u32 status; 1587 u32 reg_data; 1588 1589 do { 1590 AT_READ_REG(hw, REG_ISR, ®_data); 1591 status = reg_data & hw->intr_mask; 1592 1593 if (status == 0 || (status & ISR_DIS_INT) != 0) { 1594 if (max_ints != AT_MAX_INT_WORK) 1595 handled = IRQ_HANDLED; 1596 break; 1597 } 1598 /* link event */ 1599 if (status & ISR_GPHY) 1600 atl1c_clear_phy_int(adapter); 1601 /* Ack ISR */ 1602 AT_WRITE_REG(hw, REG_ISR, status | ISR_DIS_INT); 1603 if (status & ISR_RX_PKT) { 1604 if (likely(napi_schedule_prep(&adapter->napi))) { 1605 hw->intr_mask &= ~ISR_RX_PKT; 1606 AT_WRITE_REG(hw, REG_IMR, hw->intr_mask); 1607 __napi_schedule(&adapter->napi); 1608 } 1609 } 1610 if (status & ISR_TX_PKT) 1611 atl1c_clean_tx_irq(adapter, atl1c_trans_normal); 1612 1613 handled = IRQ_HANDLED; 1614 /* check if PCIE PHY Link down */ 1615 if (status & ISR_ERROR) { 1616 if (netif_msg_hw(adapter)) 1617 dev_err(&pdev->dev, 1618 "atl1c hardware error (status = 0x%x)\n", 1619 status & ISR_ERROR); 1620 /* reset MAC */ 1621 set_bit(ATL1C_WORK_EVENT_RESET, &adapter->work_event); 1622 schedule_work(&adapter->common_task); 1623 return IRQ_HANDLED; 1624 } 1625 1626 if (status & ISR_OVER) 1627 if (netif_msg_intr(adapter)) 1628 dev_warn(&pdev->dev, 1629 "TX/RX overflow (status = 0x%x)\n", 1630 status & ISR_OVER); 1631 1632 /* link event */ 1633 if (status & (ISR_GPHY | ISR_MANUAL)) { 1634 netdev->stats.tx_carrier_errors++; 1635 atl1c_link_chg_event(adapter); 1636 break; 1637 } 1638 1639 } while (--max_ints > 0); 1640 /* re-enable Interrupt*/ 1641 AT_WRITE_REG(&adapter->hw, REG_ISR, 0); 1642 return handled; 1643 } 1644 1645 static inline void atl1c_rx_checksum(struct atl1c_adapter *adapter, 1646 struct sk_buff *skb, struct atl1c_recv_ret_status *prrs) 1647 { 1648 /* 1649 * The pid field in RRS in not correct sometimes, so we 1650 * cannot figure out if the packet is fragmented or not, 1651 * so we tell the KERNEL CHECKSUM_NONE 1652 */ 1653 skb_checksum_none_assert(skb); 1654 } 1655 1656 static struct sk_buff *atl1c_alloc_skb(struct atl1c_adapter *adapter) 1657 { 1658 struct sk_buff *skb; 1659 struct page *page; 1660 1661 if (adapter->rx_frag_size > PAGE_SIZE) 1662 return netdev_alloc_skb(adapter->netdev, 1663 adapter->rx_buffer_len); 1664 1665 page = adapter->rx_page; 1666 if (!page) { 1667 adapter->rx_page = page = alloc_page(GFP_ATOMIC); 1668 if (unlikely(!page)) 1669 return NULL; 1670 adapter->rx_page_offset = 0; 1671 } 1672 1673 skb = build_skb(page_address(page) + adapter->rx_page_offset, 1674 adapter->rx_frag_size); 1675 if (likely(skb)) { 1676 skb_reserve(skb, NET_SKB_PAD); 1677 adapter->rx_page_offset += adapter->rx_frag_size; 1678 if (adapter->rx_page_offset >= PAGE_SIZE) 1679 adapter->rx_page = NULL; 1680 else 1681 get_page(page); 1682 } 1683 return skb; 1684 } 1685 1686 static int atl1c_alloc_rx_buffer(struct atl1c_adapter *adapter) 1687 { 1688 struct atl1c_rfd_ring *rfd_ring = &adapter->rfd_ring; 1689 struct pci_dev *pdev = adapter->pdev; 1690 struct atl1c_buffer *buffer_info, *next_info; 1691 struct sk_buff *skb; 1692 void *vir_addr = NULL; 1693 u16 num_alloc = 0; 1694 u16 rfd_next_to_use, next_next; 1695 struct atl1c_rx_free_desc *rfd_desc; 1696 dma_addr_t mapping; 1697 1698 next_next = rfd_next_to_use = rfd_ring->next_to_use; 1699 if (++next_next == rfd_ring->count) 1700 next_next = 0; 1701 buffer_info = &rfd_ring->buffer_info[rfd_next_to_use]; 1702 next_info = &rfd_ring->buffer_info[next_next]; 1703 1704 while (next_info->flags & ATL1C_BUFFER_FREE) { 1705 rfd_desc = ATL1C_RFD_DESC(rfd_ring, rfd_next_to_use); 1706 1707 skb = atl1c_alloc_skb(adapter); 1708 if (unlikely(!skb)) { 1709 if (netif_msg_rx_err(adapter)) 1710 dev_warn(&pdev->dev, "alloc rx buffer failed\n"); 1711 break; 1712 } 1713 1714 /* 1715 * Make buffer alignment 2 beyond a 16 byte boundary 1716 * this will result in a 16 byte aligned IP header after 1717 * the 14 byte MAC header is removed 1718 */ 1719 vir_addr = skb->data; 1720 ATL1C_SET_BUFFER_STATE(buffer_info, ATL1C_BUFFER_BUSY); 1721 buffer_info->skb = skb; 1722 buffer_info->length = adapter->rx_buffer_len; 1723 mapping = pci_map_single(pdev, vir_addr, 1724 buffer_info->length, 1725 PCI_DMA_FROMDEVICE); 1726 if (unlikely(pci_dma_mapping_error(pdev, mapping))) { 1727 dev_kfree_skb(skb); 1728 buffer_info->skb = NULL; 1729 buffer_info->length = 0; 1730 ATL1C_SET_BUFFER_STATE(buffer_info, ATL1C_BUFFER_FREE); 1731 netif_warn(adapter, rx_err, adapter->netdev, "RX pci_map_single failed"); 1732 break; 1733 } 1734 buffer_info->dma = mapping; 1735 ATL1C_SET_PCIMAP_TYPE(buffer_info, ATL1C_PCIMAP_SINGLE, 1736 ATL1C_PCIMAP_FROMDEVICE); 1737 rfd_desc->buffer_addr = cpu_to_le64(buffer_info->dma); 1738 rfd_next_to_use = next_next; 1739 if (++next_next == rfd_ring->count) 1740 next_next = 0; 1741 buffer_info = &rfd_ring->buffer_info[rfd_next_to_use]; 1742 next_info = &rfd_ring->buffer_info[next_next]; 1743 num_alloc++; 1744 } 1745 1746 if (num_alloc) { 1747 /* TODO: update mailbox here */ 1748 wmb(); 1749 rfd_ring->next_to_use = rfd_next_to_use; 1750 AT_WRITE_REG(&adapter->hw, REG_MB_RFD0_PROD_IDX, 1751 rfd_ring->next_to_use & MB_RFDX_PROD_IDX_MASK); 1752 } 1753 1754 return num_alloc; 1755 } 1756 1757 static void atl1c_clean_rrd(struct atl1c_rrd_ring *rrd_ring, 1758 struct atl1c_recv_ret_status *rrs, u16 num) 1759 { 1760 u16 i; 1761 /* the relationship between rrd and rfd is one map one */ 1762 for (i = 0; i < num; i++, rrs = ATL1C_RRD_DESC(rrd_ring, 1763 rrd_ring->next_to_clean)) { 1764 rrs->word3 &= ~RRS_RXD_UPDATED; 1765 if (++rrd_ring->next_to_clean == rrd_ring->count) 1766 rrd_ring->next_to_clean = 0; 1767 } 1768 } 1769 1770 static void atl1c_clean_rfd(struct atl1c_rfd_ring *rfd_ring, 1771 struct atl1c_recv_ret_status *rrs, u16 num) 1772 { 1773 u16 i; 1774 u16 rfd_index; 1775 struct atl1c_buffer *buffer_info = rfd_ring->buffer_info; 1776 1777 rfd_index = (rrs->word0 >> RRS_RX_RFD_INDEX_SHIFT) & 1778 RRS_RX_RFD_INDEX_MASK; 1779 for (i = 0; i < num; i++) { 1780 buffer_info[rfd_index].skb = NULL; 1781 ATL1C_SET_BUFFER_STATE(&buffer_info[rfd_index], 1782 ATL1C_BUFFER_FREE); 1783 if (++rfd_index == rfd_ring->count) 1784 rfd_index = 0; 1785 } 1786 rfd_ring->next_to_clean = rfd_index; 1787 } 1788 1789 static void atl1c_clean_rx_irq(struct atl1c_adapter *adapter, 1790 int *work_done, int work_to_do) 1791 { 1792 u16 rfd_num, rfd_index; 1793 u16 count = 0; 1794 u16 length; 1795 struct pci_dev *pdev = adapter->pdev; 1796 struct net_device *netdev = adapter->netdev; 1797 struct atl1c_rfd_ring *rfd_ring = &adapter->rfd_ring; 1798 struct atl1c_rrd_ring *rrd_ring = &adapter->rrd_ring; 1799 struct sk_buff *skb; 1800 struct atl1c_recv_ret_status *rrs; 1801 struct atl1c_buffer *buffer_info; 1802 1803 while (1) { 1804 if (*work_done >= work_to_do) 1805 break; 1806 rrs = ATL1C_RRD_DESC(rrd_ring, rrd_ring->next_to_clean); 1807 if (likely(RRS_RXD_IS_VALID(rrs->word3))) { 1808 rfd_num = (rrs->word0 >> RRS_RX_RFD_CNT_SHIFT) & 1809 RRS_RX_RFD_CNT_MASK; 1810 if (unlikely(rfd_num != 1)) 1811 /* TODO support mul rfd*/ 1812 if (netif_msg_rx_err(adapter)) 1813 dev_warn(&pdev->dev, 1814 "Multi rfd not support yet!\n"); 1815 goto rrs_checked; 1816 } else { 1817 break; 1818 } 1819 rrs_checked: 1820 atl1c_clean_rrd(rrd_ring, rrs, rfd_num); 1821 if (rrs->word3 & (RRS_RX_ERR_SUM | RRS_802_3_LEN_ERR)) { 1822 atl1c_clean_rfd(rfd_ring, rrs, rfd_num); 1823 if (netif_msg_rx_err(adapter)) 1824 dev_warn(&pdev->dev, 1825 "wrong packet! rrs word3 is %x\n", 1826 rrs->word3); 1827 continue; 1828 } 1829 1830 length = le16_to_cpu((rrs->word3 >> RRS_PKT_SIZE_SHIFT) & 1831 RRS_PKT_SIZE_MASK); 1832 /* Good Receive */ 1833 if (likely(rfd_num == 1)) { 1834 rfd_index = (rrs->word0 >> RRS_RX_RFD_INDEX_SHIFT) & 1835 RRS_RX_RFD_INDEX_MASK; 1836 buffer_info = &rfd_ring->buffer_info[rfd_index]; 1837 pci_unmap_single(pdev, buffer_info->dma, 1838 buffer_info->length, PCI_DMA_FROMDEVICE); 1839 skb = buffer_info->skb; 1840 } else { 1841 /* TODO */ 1842 if (netif_msg_rx_err(adapter)) 1843 dev_warn(&pdev->dev, 1844 "Multi rfd not support yet!\n"); 1845 break; 1846 } 1847 atl1c_clean_rfd(rfd_ring, rrs, rfd_num); 1848 skb_put(skb, length - ETH_FCS_LEN); 1849 skb->protocol = eth_type_trans(skb, netdev); 1850 atl1c_rx_checksum(adapter, skb, rrs); 1851 if (rrs->word3 & RRS_VLAN_INS) { 1852 u16 vlan; 1853 1854 AT_TAG_TO_VLAN(rrs->vlan_tag, vlan); 1855 vlan = le16_to_cpu(vlan); 1856 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlan); 1857 } 1858 netif_receive_skb(skb); 1859 1860 (*work_done)++; 1861 count++; 1862 } 1863 if (count) 1864 atl1c_alloc_rx_buffer(adapter); 1865 } 1866 1867 /** 1868 * atl1c_clean - NAPI Rx polling callback 1869 */ 1870 static int atl1c_clean(struct napi_struct *napi, int budget) 1871 { 1872 struct atl1c_adapter *adapter = 1873 container_of(napi, struct atl1c_adapter, napi); 1874 int work_done = 0; 1875 1876 /* Keep link state information with original netdev */ 1877 if (!netif_carrier_ok(adapter->netdev)) 1878 goto quit_polling; 1879 /* just enable one RXQ */ 1880 atl1c_clean_rx_irq(adapter, &work_done, budget); 1881 1882 if (work_done < budget) { 1883 quit_polling: 1884 napi_complete_done(napi, work_done); 1885 adapter->hw.intr_mask |= ISR_RX_PKT; 1886 AT_WRITE_REG(&adapter->hw, REG_IMR, adapter->hw.intr_mask); 1887 } 1888 return work_done; 1889 } 1890 1891 #ifdef CONFIG_NET_POLL_CONTROLLER 1892 1893 /* 1894 * Polling 'interrupt' - used by things like netconsole to send skbs 1895 * without having to re-enable interrupts. It's not called while 1896 * the interrupt routine is executing. 1897 */ 1898 static void atl1c_netpoll(struct net_device *netdev) 1899 { 1900 struct atl1c_adapter *adapter = netdev_priv(netdev); 1901 1902 disable_irq(adapter->pdev->irq); 1903 atl1c_intr(adapter->pdev->irq, netdev); 1904 enable_irq(adapter->pdev->irq); 1905 } 1906 #endif 1907 1908 static inline u16 atl1c_tpd_avail(struct atl1c_adapter *adapter, enum atl1c_trans_queue type) 1909 { 1910 struct atl1c_tpd_ring *tpd_ring = &adapter->tpd_ring[type]; 1911 u16 next_to_use = 0; 1912 u16 next_to_clean = 0; 1913 1914 next_to_clean = atomic_read(&tpd_ring->next_to_clean); 1915 next_to_use = tpd_ring->next_to_use; 1916 1917 return (u16)(next_to_clean > next_to_use) ? 1918 (next_to_clean - next_to_use - 1) : 1919 (tpd_ring->count + next_to_clean - next_to_use - 1); 1920 } 1921 1922 /* 1923 * get next usable tpd 1924 * Note: should call atl1c_tdp_avail to make sure 1925 * there is enough tpd to use 1926 */ 1927 static struct atl1c_tpd_desc *atl1c_get_tpd(struct atl1c_adapter *adapter, 1928 enum atl1c_trans_queue type) 1929 { 1930 struct atl1c_tpd_ring *tpd_ring = &adapter->tpd_ring[type]; 1931 struct atl1c_tpd_desc *tpd_desc; 1932 u16 next_to_use = 0; 1933 1934 next_to_use = tpd_ring->next_to_use; 1935 if (++tpd_ring->next_to_use == tpd_ring->count) 1936 tpd_ring->next_to_use = 0; 1937 tpd_desc = ATL1C_TPD_DESC(tpd_ring, next_to_use); 1938 memset(tpd_desc, 0, sizeof(struct atl1c_tpd_desc)); 1939 return tpd_desc; 1940 } 1941 1942 static struct atl1c_buffer * 1943 atl1c_get_tx_buffer(struct atl1c_adapter *adapter, struct atl1c_tpd_desc *tpd) 1944 { 1945 struct atl1c_tpd_ring *tpd_ring = adapter->tpd_ring; 1946 1947 return &tpd_ring->buffer_info[tpd - 1948 (struct atl1c_tpd_desc *)tpd_ring->desc]; 1949 } 1950 1951 /* Calculate the transmit packet descript needed*/ 1952 static u16 atl1c_cal_tpd_req(const struct sk_buff *skb) 1953 { 1954 u16 tpd_req; 1955 u16 proto_hdr_len = 0; 1956 1957 tpd_req = skb_shinfo(skb)->nr_frags + 1; 1958 1959 if (skb_is_gso(skb)) { 1960 proto_hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); 1961 if (proto_hdr_len < skb_headlen(skb)) 1962 tpd_req++; 1963 if (skb_shinfo(skb)->gso_type & SKB_GSO_TCPV6) 1964 tpd_req++; 1965 } 1966 return tpd_req; 1967 } 1968 1969 static int atl1c_tso_csum(struct atl1c_adapter *adapter, 1970 struct sk_buff *skb, 1971 struct atl1c_tpd_desc **tpd, 1972 enum atl1c_trans_queue type) 1973 { 1974 struct pci_dev *pdev = adapter->pdev; 1975 unsigned short offload_type; 1976 u8 hdr_len; 1977 u32 real_len; 1978 1979 if (skb_is_gso(skb)) { 1980 int err; 1981 1982 err = skb_cow_head(skb, 0); 1983 if (err < 0) 1984 return err; 1985 1986 offload_type = skb_shinfo(skb)->gso_type; 1987 1988 if (offload_type & SKB_GSO_TCPV4) { 1989 real_len = (((unsigned char *)ip_hdr(skb) - skb->data) 1990 + ntohs(ip_hdr(skb)->tot_len)); 1991 1992 if (real_len < skb->len) 1993 pskb_trim(skb, real_len); 1994 1995 hdr_len = (skb_transport_offset(skb) + tcp_hdrlen(skb)); 1996 if (unlikely(skb->len == hdr_len)) { 1997 /* only xsum need */ 1998 if (netif_msg_tx_queued(adapter)) 1999 dev_warn(&pdev->dev, 2000 "IPV4 tso with zero data??\n"); 2001 goto check_sum; 2002 } else { 2003 ip_hdr(skb)->check = 0; 2004 tcp_hdr(skb)->check = ~csum_tcpudp_magic( 2005 ip_hdr(skb)->saddr, 2006 ip_hdr(skb)->daddr, 2007 0, IPPROTO_TCP, 0); 2008 (*tpd)->word1 |= 1 << TPD_IPV4_PACKET_SHIFT; 2009 } 2010 } 2011 2012 if (offload_type & SKB_GSO_TCPV6) { 2013 struct atl1c_tpd_ext_desc *etpd = 2014 *(struct atl1c_tpd_ext_desc **)(tpd); 2015 2016 memset(etpd, 0, sizeof(struct atl1c_tpd_ext_desc)); 2017 *tpd = atl1c_get_tpd(adapter, type); 2018 ipv6_hdr(skb)->payload_len = 0; 2019 /* check payload == 0 byte ? */ 2020 hdr_len = (skb_transport_offset(skb) + tcp_hdrlen(skb)); 2021 if (unlikely(skb->len == hdr_len)) { 2022 /* only xsum need */ 2023 if (netif_msg_tx_queued(adapter)) 2024 dev_warn(&pdev->dev, 2025 "IPV6 tso with zero data??\n"); 2026 goto check_sum; 2027 } else 2028 tcp_hdr(skb)->check = ~csum_ipv6_magic( 2029 &ipv6_hdr(skb)->saddr, 2030 &ipv6_hdr(skb)->daddr, 2031 0, IPPROTO_TCP, 0); 2032 etpd->word1 |= 1 << TPD_LSO_EN_SHIFT; 2033 etpd->word1 |= 1 << TPD_LSO_VER_SHIFT; 2034 etpd->pkt_len = cpu_to_le32(skb->len); 2035 (*tpd)->word1 |= 1 << TPD_LSO_VER_SHIFT; 2036 } 2037 2038 (*tpd)->word1 |= 1 << TPD_LSO_EN_SHIFT; 2039 (*tpd)->word1 |= (skb_transport_offset(skb) & TPD_TCPHDR_OFFSET_MASK) << 2040 TPD_TCPHDR_OFFSET_SHIFT; 2041 (*tpd)->word1 |= (skb_shinfo(skb)->gso_size & TPD_MSS_MASK) << 2042 TPD_MSS_SHIFT; 2043 return 0; 2044 } 2045 2046 check_sum: 2047 if (likely(skb->ip_summed == CHECKSUM_PARTIAL)) { 2048 u8 css, cso; 2049 cso = skb_checksum_start_offset(skb); 2050 2051 if (unlikely(cso & 0x1)) { 2052 if (netif_msg_tx_err(adapter)) 2053 dev_err(&adapter->pdev->dev, 2054 "payload offset should not an event number\n"); 2055 return -1; 2056 } else { 2057 css = cso + skb->csum_offset; 2058 2059 (*tpd)->word1 |= ((cso >> 1) & TPD_PLOADOFFSET_MASK) << 2060 TPD_PLOADOFFSET_SHIFT; 2061 (*tpd)->word1 |= ((css >> 1) & TPD_CCSUM_OFFSET_MASK) << 2062 TPD_CCSUM_OFFSET_SHIFT; 2063 (*tpd)->word1 |= 1 << TPD_CCSUM_EN_SHIFT; 2064 } 2065 } 2066 return 0; 2067 } 2068 2069 static void atl1c_tx_rollback(struct atl1c_adapter *adpt, 2070 struct atl1c_tpd_desc *first_tpd, 2071 enum atl1c_trans_queue type) 2072 { 2073 struct atl1c_tpd_ring *tpd_ring = &adpt->tpd_ring[type]; 2074 struct atl1c_buffer *buffer_info; 2075 struct atl1c_tpd_desc *tpd; 2076 u16 first_index, index; 2077 2078 first_index = first_tpd - (struct atl1c_tpd_desc *)tpd_ring->desc; 2079 index = first_index; 2080 while (index != tpd_ring->next_to_use) { 2081 tpd = ATL1C_TPD_DESC(tpd_ring, index); 2082 buffer_info = &tpd_ring->buffer_info[index]; 2083 atl1c_clean_buffer(adpt->pdev, buffer_info); 2084 memset(tpd, 0, sizeof(struct atl1c_tpd_desc)); 2085 if (++index == tpd_ring->count) 2086 index = 0; 2087 } 2088 tpd_ring->next_to_use = first_index; 2089 } 2090 2091 static int atl1c_tx_map(struct atl1c_adapter *adapter, 2092 struct sk_buff *skb, struct atl1c_tpd_desc *tpd, 2093 enum atl1c_trans_queue type) 2094 { 2095 struct atl1c_tpd_desc *use_tpd = NULL; 2096 struct atl1c_buffer *buffer_info = NULL; 2097 u16 buf_len = skb_headlen(skb); 2098 u16 map_len = 0; 2099 u16 mapped_len = 0; 2100 u16 hdr_len = 0; 2101 u16 nr_frags; 2102 u16 f; 2103 int tso; 2104 2105 nr_frags = skb_shinfo(skb)->nr_frags; 2106 tso = (tpd->word1 >> TPD_LSO_EN_SHIFT) & TPD_LSO_EN_MASK; 2107 if (tso) { 2108 /* TSO */ 2109 map_len = hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); 2110 use_tpd = tpd; 2111 2112 buffer_info = atl1c_get_tx_buffer(adapter, use_tpd); 2113 buffer_info->length = map_len; 2114 buffer_info->dma = pci_map_single(adapter->pdev, 2115 skb->data, hdr_len, PCI_DMA_TODEVICE); 2116 if (unlikely(pci_dma_mapping_error(adapter->pdev, 2117 buffer_info->dma))) 2118 goto err_dma; 2119 ATL1C_SET_BUFFER_STATE(buffer_info, ATL1C_BUFFER_BUSY); 2120 ATL1C_SET_PCIMAP_TYPE(buffer_info, ATL1C_PCIMAP_SINGLE, 2121 ATL1C_PCIMAP_TODEVICE); 2122 mapped_len += map_len; 2123 use_tpd->buffer_addr = cpu_to_le64(buffer_info->dma); 2124 use_tpd->buffer_len = cpu_to_le16(buffer_info->length); 2125 } 2126 2127 if (mapped_len < buf_len) { 2128 /* mapped_len == 0, means we should use the first tpd, 2129 which is given by caller */ 2130 if (mapped_len == 0) 2131 use_tpd = tpd; 2132 else { 2133 use_tpd = atl1c_get_tpd(adapter, type); 2134 memcpy(use_tpd, tpd, sizeof(struct atl1c_tpd_desc)); 2135 } 2136 buffer_info = atl1c_get_tx_buffer(adapter, use_tpd); 2137 buffer_info->length = buf_len - mapped_len; 2138 buffer_info->dma = 2139 pci_map_single(adapter->pdev, skb->data + mapped_len, 2140 buffer_info->length, PCI_DMA_TODEVICE); 2141 if (unlikely(pci_dma_mapping_error(adapter->pdev, 2142 buffer_info->dma))) 2143 goto err_dma; 2144 2145 ATL1C_SET_BUFFER_STATE(buffer_info, ATL1C_BUFFER_BUSY); 2146 ATL1C_SET_PCIMAP_TYPE(buffer_info, ATL1C_PCIMAP_SINGLE, 2147 ATL1C_PCIMAP_TODEVICE); 2148 use_tpd->buffer_addr = cpu_to_le64(buffer_info->dma); 2149 use_tpd->buffer_len = cpu_to_le16(buffer_info->length); 2150 } 2151 2152 for (f = 0; f < nr_frags; f++) { 2153 struct skb_frag_struct *frag; 2154 2155 frag = &skb_shinfo(skb)->frags[f]; 2156 2157 use_tpd = atl1c_get_tpd(adapter, type); 2158 memcpy(use_tpd, tpd, sizeof(struct atl1c_tpd_desc)); 2159 2160 buffer_info = atl1c_get_tx_buffer(adapter, use_tpd); 2161 buffer_info->length = skb_frag_size(frag); 2162 buffer_info->dma = skb_frag_dma_map(&adapter->pdev->dev, 2163 frag, 0, 2164 buffer_info->length, 2165 DMA_TO_DEVICE); 2166 if (dma_mapping_error(&adapter->pdev->dev, buffer_info->dma)) 2167 goto err_dma; 2168 2169 ATL1C_SET_BUFFER_STATE(buffer_info, ATL1C_BUFFER_BUSY); 2170 ATL1C_SET_PCIMAP_TYPE(buffer_info, ATL1C_PCIMAP_PAGE, 2171 ATL1C_PCIMAP_TODEVICE); 2172 use_tpd->buffer_addr = cpu_to_le64(buffer_info->dma); 2173 use_tpd->buffer_len = cpu_to_le16(buffer_info->length); 2174 } 2175 2176 /* The last tpd */ 2177 use_tpd->word1 |= 1 << TPD_EOP_SHIFT; 2178 /* The last buffer info contain the skb address, 2179 so it will be free after unmap */ 2180 buffer_info->skb = skb; 2181 2182 return 0; 2183 2184 err_dma: 2185 buffer_info->dma = 0; 2186 buffer_info->length = 0; 2187 return -1; 2188 } 2189 2190 static void atl1c_tx_queue(struct atl1c_adapter *adapter, struct sk_buff *skb, 2191 struct atl1c_tpd_desc *tpd, enum atl1c_trans_queue type) 2192 { 2193 struct atl1c_tpd_ring *tpd_ring = &adapter->tpd_ring[type]; 2194 u16 reg; 2195 2196 reg = type == atl1c_trans_high ? REG_TPD_PRI1_PIDX : REG_TPD_PRI0_PIDX; 2197 AT_WRITE_REGW(&adapter->hw, reg, tpd_ring->next_to_use); 2198 } 2199 2200 static netdev_tx_t atl1c_xmit_frame(struct sk_buff *skb, 2201 struct net_device *netdev) 2202 { 2203 struct atl1c_adapter *adapter = netdev_priv(netdev); 2204 u16 tpd_req = 1; 2205 struct atl1c_tpd_desc *tpd; 2206 enum atl1c_trans_queue type = atl1c_trans_normal; 2207 2208 if (test_bit(__AT_DOWN, &adapter->flags)) { 2209 dev_kfree_skb_any(skb); 2210 return NETDEV_TX_OK; 2211 } 2212 2213 tpd_req = atl1c_cal_tpd_req(skb); 2214 2215 if (atl1c_tpd_avail(adapter, type) < tpd_req) { 2216 /* no enough descriptor, just stop queue */ 2217 netif_stop_queue(netdev); 2218 return NETDEV_TX_BUSY; 2219 } 2220 2221 tpd = atl1c_get_tpd(adapter, type); 2222 2223 /* do TSO and check sum */ 2224 if (atl1c_tso_csum(adapter, skb, &tpd, type) != 0) { 2225 dev_kfree_skb_any(skb); 2226 return NETDEV_TX_OK; 2227 } 2228 2229 if (unlikely(skb_vlan_tag_present(skb))) { 2230 u16 vlan = skb_vlan_tag_get(skb); 2231 __le16 tag; 2232 2233 vlan = cpu_to_le16(vlan); 2234 AT_VLAN_TO_TAG(vlan, tag); 2235 tpd->word1 |= 1 << TPD_INS_VTAG_SHIFT; 2236 tpd->vlan_tag = tag; 2237 } 2238 2239 if (skb_network_offset(skb) != ETH_HLEN) 2240 tpd->word1 |= 1 << TPD_ETH_TYPE_SHIFT; /* Ethernet frame */ 2241 2242 if (atl1c_tx_map(adapter, skb, tpd, type) < 0) { 2243 netif_info(adapter, tx_done, adapter->netdev, 2244 "tx-skb dropped due to dma error\n"); 2245 /* roll back tpd/buffer */ 2246 atl1c_tx_rollback(adapter, tpd, type); 2247 dev_kfree_skb_any(skb); 2248 } else { 2249 netdev_sent_queue(adapter->netdev, skb->len); 2250 atl1c_tx_queue(adapter, skb, tpd, type); 2251 } 2252 2253 return NETDEV_TX_OK; 2254 } 2255 2256 static void atl1c_free_irq(struct atl1c_adapter *adapter) 2257 { 2258 struct net_device *netdev = adapter->netdev; 2259 2260 free_irq(adapter->pdev->irq, netdev); 2261 2262 if (adapter->have_msi) 2263 pci_disable_msi(adapter->pdev); 2264 } 2265 2266 static int atl1c_request_irq(struct atl1c_adapter *adapter) 2267 { 2268 struct pci_dev *pdev = adapter->pdev; 2269 struct net_device *netdev = adapter->netdev; 2270 int flags = 0; 2271 int err = 0; 2272 2273 adapter->have_msi = true; 2274 err = pci_enable_msi(adapter->pdev); 2275 if (err) { 2276 if (netif_msg_ifup(adapter)) 2277 dev_err(&pdev->dev, 2278 "Unable to allocate MSI interrupt Error: %d\n", 2279 err); 2280 adapter->have_msi = false; 2281 } 2282 2283 if (!adapter->have_msi) 2284 flags |= IRQF_SHARED; 2285 err = request_irq(adapter->pdev->irq, atl1c_intr, flags, 2286 netdev->name, netdev); 2287 if (err) { 2288 if (netif_msg_ifup(adapter)) 2289 dev_err(&pdev->dev, 2290 "Unable to allocate interrupt Error: %d\n", 2291 err); 2292 if (adapter->have_msi) 2293 pci_disable_msi(adapter->pdev); 2294 return err; 2295 } 2296 if (netif_msg_ifup(adapter)) 2297 dev_dbg(&pdev->dev, "atl1c_request_irq OK\n"); 2298 return err; 2299 } 2300 2301 2302 static void atl1c_reset_dma_ring(struct atl1c_adapter *adapter) 2303 { 2304 /* release tx-pending skbs and reset tx/rx ring index */ 2305 atl1c_clean_tx_ring(adapter, atl1c_trans_normal); 2306 atl1c_clean_tx_ring(adapter, atl1c_trans_high); 2307 atl1c_clean_rx_ring(adapter); 2308 } 2309 2310 static int atl1c_up(struct atl1c_adapter *adapter) 2311 { 2312 struct net_device *netdev = adapter->netdev; 2313 int err; 2314 2315 netif_carrier_off(netdev); 2316 2317 err = atl1c_configure(adapter); 2318 if (unlikely(err)) 2319 goto err_up; 2320 2321 err = atl1c_request_irq(adapter); 2322 if (unlikely(err)) 2323 goto err_up; 2324 2325 atl1c_check_link_status(adapter); 2326 clear_bit(__AT_DOWN, &adapter->flags); 2327 napi_enable(&adapter->napi); 2328 atl1c_irq_enable(adapter); 2329 netif_start_queue(netdev); 2330 return err; 2331 2332 err_up: 2333 atl1c_clean_rx_ring(adapter); 2334 return err; 2335 } 2336 2337 static void atl1c_down(struct atl1c_adapter *adapter) 2338 { 2339 struct net_device *netdev = adapter->netdev; 2340 2341 atl1c_del_timer(adapter); 2342 adapter->work_event = 0; /* clear all event */ 2343 /* signal that we're down so the interrupt handler does not 2344 * reschedule our watchdog timer */ 2345 set_bit(__AT_DOWN, &adapter->flags); 2346 netif_carrier_off(netdev); 2347 napi_disable(&adapter->napi); 2348 atl1c_irq_disable(adapter); 2349 atl1c_free_irq(adapter); 2350 /* disable ASPM if device inactive */ 2351 atl1c_disable_l0s_l1(&adapter->hw); 2352 /* reset MAC to disable all RX/TX */ 2353 atl1c_reset_mac(&adapter->hw); 2354 msleep(1); 2355 2356 adapter->link_speed = SPEED_0; 2357 adapter->link_duplex = -1; 2358 atl1c_reset_dma_ring(adapter); 2359 } 2360 2361 /** 2362 * atl1c_open - Called when a network interface is made active 2363 * @netdev: network interface device structure 2364 * 2365 * Returns 0 on success, negative value on failure 2366 * 2367 * The open entry point is called when a network interface is made 2368 * active by the system (IFF_UP). At this point all resources needed 2369 * for transmit and receive operations are allocated, the interrupt 2370 * handler is registered with the OS, the watchdog timer is started, 2371 * and the stack is notified that the interface is ready. 2372 */ 2373 static int atl1c_open(struct net_device *netdev) 2374 { 2375 struct atl1c_adapter *adapter = netdev_priv(netdev); 2376 int err; 2377 2378 /* disallow open during test */ 2379 if (test_bit(__AT_TESTING, &adapter->flags)) 2380 return -EBUSY; 2381 2382 /* allocate rx/tx dma buffer & descriptors */ 2383 err = atl1c_setup_ring_resources(adapter); 2384 if (unlikely(err)) 2385 return err; 2386 2387 err = atl1c_up(adapter); 2388 if (unlikely(err)) 2389 goto err_up; 2390 2391 return 0; 2392 2393 err_up: 2394 atl1c_free_irq(adapter); 2395 atl1c_free_ring_resources(adapter); 2396 atl1c_reset_mac(&adapter->hw); 2397 return err; 2398 } 2399 2400 /** 2401 * atl1c_close - Disables a network interface 2402 * @netdev: network interface device structure 2403 * 2404 * Returns 0, this is not allowed to fail 2405 * 2406 * The close entry point is called when an interface is de-activated 2407 * by the OS. The hardware is still under the drivers control, but 2408 * needs to be disabled. A global MAC reset is issued to stop the 2409 * hardware, and all transmit and receive resources are freed. 2410 */ 2411 static int atl1c_close(struct net_device *netdev) 2412 { 2413 struct atl1c_adapter *adapter = netdev_priv(netdev); 2414 2415 WARN_ON(test_bit(__AT_RESETTING, &adapter->flags)); 2416 set_bit(__AT_DOWN, &adapter->flags); 2417 cancel_work_sync(&adapter->common_task); 2418 atl1c_down(adapter); 2419 atl1c_free_ring_resources(adapter); 2420 return 0; 2421 } 2422 2423 static int atl1c_suspend(struct device *dev) 2424 { 2425 struct pci_dev *pdev = to_pci_dev(dev); 2426 struct net_device *netdev = pci_get_drvdata(pdev); 2427 struct atl1c_adapter *adapter = netdev_priv(netdev); 2428 struct atl1c_hw *hw = &adapter->hw; 2429 u32 wufc = adapter->wol; 2430 2431 atl1c_disable_l0s_l1(hw); 2432 if (netif_running(netdev)) { 2433 WARN_ON(test_bit(__AT_RESETTING, &adapter->flags)); 2434 atl1c_down(adapter); 2435 } 2436 netif_device_detach(netdev); 2437 2438 if (wufc) 2439 if (atl1c_phy_to_ps_link(hw) != 0) 2440 dev_dbg(&pdev->dev, "phy power saving failed"); 2441 2442 atl1c_power_saving(hw, wufc); 2443 2444 return 0; 2445 } 2446 2447 #ifdef CONFIG_PM_SLEEP 2448 static int atl1c_resume(struct device *dev) 2449 { 2450 struct pci_dev *pdev = to_pci_dev(dev); 2451 struct net_device *netdev = pci_get_drvdata(pdev); 2452 struct atl1c_adapter *adapter = netdev_priv(netdev); 2453 2454 AT_WRITE_REG(&adapter->hw, REG_WOL_CTRL, 0); 2455 atl1c_reset_pcie(&adapter->hw, ATL1C_PCIE_L0S_L1_DISABLE); 2456 2457 atl1c_phy_reset(&adapter->hw); 2458 atl1c_reset_mac(&adapter->hw); 2459 atl1c_phy_init(&adapter->hw); 2460 2461 #if 0 2462 AT_READ_REG(&adapter->hw, REG_PM_CTRLSTAT, &pm_data); 2463 pm_data &= ~PM_CTRLSTAT_PME_EN; 2464 AT_WRITE_REG(&adapter->hw, REG_PM_CTRLSTAT, pm_data); 2465 #endif 2466 2467 netif_device_attach(netdev); 2468 if (netif_running(netdev)) 2469 atl1c_up(adapter); 2470 2471 return 0; 2472 } 2473 #endif 2474 2475 static void atl1c_shutdown(struct pci_dev *pdev) 2476 { 2477 struct net_device *netdev = pci_get_drvdata(pdev); 2478 struct atl1c_adapter *adapter = netdev_priv(netdev); 2479 2480 atl1c_suspend(&pdev->dev); 2481 pci_wake_from_d3(pdev, adapter->wol); 2482 pci_set_power_state(pdev, PCI_D3hot); 2483 } 2484 2485 static const struct net_device_ops atl1c_netdev_ops = { 2486 .ndo_open = atl1c_open, 2487 .ndo_stop = atl1c_close, 2488 .ndo_validate_addr = eth_validate_addr, 2489 .ndo_start_xmit = atl1c_xmit_frame, 2490 .ndo_set_mac_address = atl1c_set_mac_addr, 2491 .ndo_set_rx_mode = atl1c_set_multi, 2492 .ndo_change_mtu = atl1c_change_mtu, 2493 .ndo_fix_features = atl1c_fix_features, 2494 .ndo_set_features = atl1c_set_features, 2495 .ndo_do_ioctl = atl1c_ioctl, 2496 .ndo_tx_timeout = atl1c_tx_timeout, 2497 .ndo_get_stats = atl1c_get_stats, 2498 #ifdef CONFIG_NET_POLL_CONTROLLER 2499 .ndo_poll_controller = atl1c_netpoll, 2500 #endif 2501 }; 2502 2503 static int atl1c_init_netdev(struct net_device *netdev, struct pci_dev *pdev) 2504 { 2505 SET_NETDEV_DEV(netdev, &pdev->dev); 2506 pci_set_drvdata(pdev, netdev); 2507 2508 netdev->netdev_ops = &atl1c_netdev_ops; 2509 netdev->watchdog_timeo = AT_TX_WATCHDOG; 2510 netdev->min_mtu = ETH_ZLEN - (ETH_HLEN + VLAN_HLEN); 2511 atl1c_set_ethtool_ops(netdev); 2512 2513 /* TODO: add when ready */ 2514 netdev->hw_features = NETIF_F_SG | 2515 NETIF_F_HW_CSUM | 2516 NETIF_F_HW_VLAN_CTAG_RX | 2517 NETIF_F_TSO | 2518 NETIF_F_TSO6; 2519 netdev->features = netdev->hw_features | 2520 NETIF_F_HW_VLAN_CTAG_TX; 2521 return 0; 2522 } 2523 2524 /** 2525 * atl1c_probe - Device Initialization Routine 2526 * @pdev: PCI device information struct 2527 * @ent: entry in atl1c_pci_tbl 2528 * 2529 * Returns 0 on success, negative on failure 2530 * 2531 * atl1c_probe initializes an adapter identified by a pci_dev structure. 2532 * The OS initialization, configuring of the adapter private structure, 2533 * and a hardware reset occur. 2534 */ 2535 static int atl1c_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 2536 { 2537 struct net_device *netdev; 2538 struct atl1c_adapter *adapter; 2539 static int cards_found; 2540 2541 int err = 0; 2542 2543 /* enable device (incl. PCI PM wakeup and hotplug setup) */ 2544 err = pci_enable_device_mem(pdev); 2545 if (err) { 2546 dev_err(&pdev->dev, "cannot enable PCI device\n"); 2547 return err; 2548 } 2549 2550 /* 2551 * The atl1c chip can DMA to 64-bit addresses, but it uses a single 2552 * shared register for the high 32 bits, so only a single, aligned, 2553 * 4 GB physical address range can be used at a time. 2554 * 2555 * Supporting 64-bit DMA on this hardware is more trouble than it's 2556 * worth. It is far easier to limit to 32-bit DMA than update 2557 * various kernel subsystems to support the mechanics required by a 2558 * fixed-high-32-bit system. 2559 */ 2560 if ((pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) || 2561 (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)) { 2562 dev_err(&pdev->dev, "No usable DMA configuration,aborting\n"); 2563 goto err_dma; 2564 } 2565 2566 err = pci_request_regions(pdev, atl1c_driver_name); 2567 if (err) { 2568 dev_err(&pdev->dev, "cannot obtain PCI resources\n"); 2569 goto err_pci_reg; 2570 } 2571 2572 pci_set_master(pdev); 2573 2574 netdev = alloc_etherdev(sizeof(struct atl1c_adapter)); 2575 if (netdev == NULL) { 2576 err = -ENOMEM; 2577 goto err_alloc_etherdev; 2578 } 2579 2580 err = atl1c_init_netdev(netdev, pdev); 2581 if (err) { 2582 dev_err(&pdev->dev, "init netdevice failed\n"); 2583 goto err_init_netdev; 2584 } 2585 adapter = netdev_priv(netdev); 2586 adapter->bd_number = cards_found; 2587 adapter->netdev = netdev; 2588 adapter->pdev = pdev; 2589 adapter->hw.adapter = adapter; 2590 adapter->msg_enable = netif_msg_init(-1, atl1c_default_msg); 2591 adapter->hw.hw_addr = ioremap(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0)); 2592 if (!adapter->hw.hw_addr) { 2593 err = -EIO; 2594 dev_err(&pdev->dev, "cannot map device registers\n"); 2595 goto err_ioremap; 2596 } 2597 2598 /* init mii data */ 2599 adapter->mii.dev = netdev; 2600 adapter->mii.mdio_read = atl1c_mdio_read; 2601 adapter->mii.mdio_write = atl1c_mdio_write; 2602 adapter->mii.phy_id_mask = 0x1f; 2603 adapter->mii.reg_num_mask = MDIO_CTRL_REG_MASK; 2604 netif_napi_add(netdev, &adapter->napi, atl1c_clean, 64); 2605 timer_setup(&adapter->phy_config_timer, atl1c_phy_config, 0); 2606 /* setup the private structure */ 2607 err = atl1c_sw_init(adapter); 2608 if (err) { 2609 dev_err(&pdev->dev, "net device private data init failed\n"); 2610 goto err_sw_init; 2611 } 2612 /* set max MTU */ 2613 atl1c_set_max_mtu(netdev); 2614 2615 atl1c_reset_pcie(&adapter->hw, ATL1C_PCIE_L0S_L1_DISABLE); 2616 2617 /* Init GPHY as early as possible due to power saving issue */ 2618 atl1c_phy_reset(&adapter->hw); 2619 2620 err = atl1c_reset_mac(&adapter->hw); 2621 if (err) { 2622 err = -EIO; 2623 goto err_reset; 2624 } 2625 2626 /* reset the controller to 2627 * put the device in a known good starting state */ 2628 err = atl1c_phy_init(&adapter->hw); 2629 if (err) { 2630 err = -EIO; 2631 goto err_reset; 2632 } 2633 if (atl1c_read_mac_addr(&adapter->hw)) { 2634 /* got a random MAC address, set NET_ADDR_RANDOM to netdev */ 2635 netdev->addr_assign_type = NET_ADDR_RANDOM; 2636 } 2637 memcpy(netdev->dev_addr, adapter->hw.mac_addr, netdev->addr_len); 2638 if (netif_msg_probe(adapter)) 2639 dev_dbg(&pdev->dev, "mac address : %pM\n", 2640 adapter->hw.mac_addr); 2641 2642 atl1c_hw_set_mac_addr(&adapter->hw, adapter->hw.mac_addr); 2643 INIT_WORK(&adapter->common_task, atl1c_common_task); 2644 adapter->work_event = 0; 2645 err = register_netdev(netdev); 2646 if (err) { 2647 dev_err(&pdev->dev, "register netdevice failed\n"); 2648 goto err_register; 2649 } 2650 2651 if (netif_msg_probe(adapter)) 2652 dev_info(&pdev->dev, "version %s\n", ATL1C_DRV_VERSION); 2653 cards_found++; 2654 return 0; 2655 2656 err_reset: 2657 err_register: 2658 err_sw_init: 2659 iounmap(adapter->hw.hw_addr); 2660 err_init_netdev: 2661 err_ioremap: 2662 free_netdev(netdev); 2663 err_alloc_etherdev: 2664 pci_release_regions(pdev); 2665 err_pci_reg: 2666 err_dma: 2667 pci_disable_device(pdev); 2668 return err; 2669 } 2670 2671 /** 2672 * atl1c_remove - Device Removal Routine 2673 * @pdev: PCI device information struct 2674 * 2675 * atl1c_remove is called by the PCI subsystem to alert the driver 2676 * that it should release a PCI device. The could be caused by a 2677 * Hot-Plug event, or because the driver is going to be removed from 2678 * memory. 2679 */ 2680 static void atl1c_remove(struct pci_dev *pdev) 2681 { 2682 struct net_device *netdev = pci_get_drvdata(pdev); 2683 struct atl1c_adapter *adapter = netdev_priv(netdev); 2684 2685 unregister_netdev(netdev); 2686 /* restore permanent address */ 2687 atl1c_hw_set_mac_addr(&adapter->hw, adapter->hw.perm_mac_addr); 2688 atl1c_phy_disable(&adapter->hw); 2689 2690 iounmap(adapter->hw.hw_addr); 2691 2692 pci_release_regions(pdev); 2693 pci_disable_device(pdev); 2694 free_netdev(netdev); 2695 } 2696 2697 /** 2698 * atl1c_io_error_detected - called when PCI error is detected 2699 * @pdev: Pointer to PCI device 2700 * @state: The current pci connection state 2701 * 2702 * This function is called after a PCI bus error affecting 2703 * this device has been detected. 2704 */ 2705 static pci_ers_result_t atl1c_io_error_detected(struct pci_dev *pdev, 2706 pci_channel_state_t state) 2707 { 2708 struct net_device *netdev = pci_get_drvdata(pdev); 2709 struct atl1c_adapter *adapter = netdev_priv(netdev); 2710 2711 netif_device_detach(netdev); 2712 2713 if (state == pci_channel_io_perm_failure) 2714 return PCI_ERS_RESULT_DISCONNECT; 2715 2716 if (netif_running(netdev)) 2717 atl1c_down(adapter); 2718 2719 pci_disable_device(pdev); 2720 2721 /* Request a slot slot reset. */ 2722 return PCI_ERS_RESULT_NEED_RESET; 2723 } 2724 2725 /** 2726 * atl1c_io_slot_reset - called after the pci bus has been reset. 2727 * @pdev: Pointer to PCI device 2728 * 2729 * Restart the card from scratch, as if from a cold-boot. Implementation 2730 * resembles the first-half of the e1000_resume routine. 2731 */ 2732 static pci_ers_result_t atl1c_io_slot_reset(struct pci_dev *pdev) 2733 { 2734 struct net_device *netdev = pci_get_drvdata(pdev); 2735 struct atl1c_adapter *adapter = netdev_priv(netdev); 2736 2737 if (pci_enable_device(pdev)) { 2738 if (netif_msg_hw(adapter)) 2739 dev_err(&pdev->dev, 2740 "Cannot re-enable PCI device after reset\n"); 2741 return PCI_ERS_RESULT_DISCONNECT; 2742 } 2743 pci_set_master(pdev); 2744 2745 pci_enable_wake(pdev, PCI_D3hot, 0); 2746 pci_enable_wake(pdev, PCI_D3cold, 0); 2747 2748 atl1c_reset_mac(&adapter->hw); 2749 2750 return PCI_ERS_RESULT_RECOVERED; 2751 } 2752 2753 /** 2754 * atl1c_io_resume - called when traffic can start flowing again. 2755 * @pdev: Pointer to PCI device 2756 * 2757 * This callback is called when the error recovery driver tells us that 2758 * its OK to resume normal operation. Implementation resembles the 2759 * second-half of the atl1c_resume routine. 2760 */ 2761 static void atl1c_io_resume(struct pci_dev *pdev) 2762 { 2763 struct net_device *netdev = pci_get_drvdata(pdev); 2764 struct atl1c_adapter *adapter = netdev_priv(netdev); 2765 2766 if (netif_running(netdev)) { 2767 if (atl1c_up(adapter)) { 2768 if (netif_msg_hw(adapter)) 2769 dev_err(&pdev->dev, 2770 "Cannot bring device back up after reset\n"); 2771 return; 2772 } 2773 } 2774 2775 netif_device_attach(netdev); 2776 } 2777 2778 static const struct pci_error_handlers atl1c_err_handler = { 2779 .error_detected = atl1c_io_error_detected, 2780 .slot_reset = atl1c_io_slot_reset, 2781 .resume = atl1c_io_resume, 2782 }; 2783 2784 static SIMPLE_DEV_PM_OPS(atl1c_pm_ops, atl1c_suspend, atl1c_resume); 2785 2786 static struct pci_driver atl1c_driver = { 2787 .name = atl1c_driver_name, 2788 .id_table = atl1c_pci_tbl, 2789 .probe = atl1c_probe, 2790 .remove = atl1c_remove, 2791 .shutdown = atl1c_shutdown, 2792 .err_handler = &atl1c_err_handler, 2793 .driver.pm = &atl1c_pm_ops, 2794 }; 2795 2796 module_pci_driver(atl1c_driver); 2797