1/* 2 * Copyright(c) 2008 - 2009 Atheros Corporation. All rights reserved. 3 * 4 * Derived from Intel e1000 driver 5 * Copyright(c) 1999 - 2005 Intel Corporation. All rights reserved. 6 * 7 * This program is free software; you can redistribute it and/or modify it 8 * under the terms of the GNU General Public License as published by the Free 9 * Software Foundation; either version 2 of the License, or (at your option) 10 * any later version. 11 * 12 * This program is distributed in the hope that it will be useful, but WITHOUT 13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 15 * more details. 16 * 17 * You should have received a copy of the GNU General Public License along with 18 * this program; if not, write to the Free Software Foundation, Inc., 59 19 * Temple Place - Suite 330, Boston, MA 02111-1307, USA. 20 */ 21 22#include "atl1c.h" 23 24#define ATL1C_DRV_VERSION "1.0.1.1-NAPI" 25char atl1c_driver_name[] = "atl1c"; 26char atl1c_driver_version[] = ATL1C_DRV_VERSION; 27 28/* 29 * atl1c_pci_tbl - PCI Device ID Table 30 * 31 * Wildcard entries (PCI_ANY_ID) should come last 32 * Last entry must be all 0s 33 * 34 * { Vendor ID, Device ID, SubVendor ID, SubDevice ID, 35 * Class, Class Mask, private data (not used) } 36 */ 37static const struct pci_device_id atl1c_pci_tbl[] = { 38 {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, PCI_DEVICE_ID_ATTANSIC_L1C)}, 39 {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, PCI_DEVICE_ID_ATTANSIC_L2C)}, 40 {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, PCI_DEVICE_ID_ATHEROS_L2C_B)}, 41 {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, PCI_DEVICE_ID_ATHEROS_L2C_B2)}, 42 {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, PCI_DEVICE_ID_ATHEROS_L1D)}, 43 {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, PCI_DEVICE_ID_ATHEROS_L1D_2_0)}, 44 /* required last entry */ 45 { 0 } 46}; 47MODULE_DEVICE_TABLE(pci, atl1c_pci_tbl); 48 49MODULE_AUTHOR("Jie Yang"); 50MODULE_AUTHOR("Qualcomm Atheros Inc., <nic-devel@qualcomm.com>"); 51MODULE_DESCRIPTION("Qualcomm Atheros 100/1000M Ethernet Network Driver"); 52MODULE_LICENSE("GPL"); 53MODULE_VERSION(ATL1C_DRV_VERSION); 54 55static int atl1c_stop_mac(struct atl1c_hw *hw); 56static void atl1c_disable_l0s_l1(struct atl1c_hw *hw); 57static void atl1c_set_aspm(struct atl1c_hw *hw, u16 link_speed); 58static void atl1c_start_mac(struct atl1c_adapter *adapter); 59static void atl1c_clean_rx_irq(struct atl1c_adapter *adapter, 60 int *work_done, int work_to_do); 61static int atl1c_up(struct atl1c_adapter *adapter); 62static void atl1c_down(struct atl1c_adapter *adapter); 63static int atl1c_reset_mac(struct atl1c_hw *hw); 64static void atl1c_reset_dma_ring(struct atl1c_adapter *adapter); 65static int atl1c_configure(struct atl1c_adapter *adapter); 66static int atl1c_alloc_rx_buffer(struct atl1c_adapter *adapter); 67 68static const u16 atl1c_pay_load_size[] = { 69 128, 256, 512, 1024, 2048, 4096, 70}; 71 72 73static const u32 atl1c_default_msg = NETIF_MSG_DRV | NETIF_MSG_PROBE | 74 NETIF_MSG_LINK | NETIF_MSG_TIMER | NETIF_MSG_IFDOWN | NETIF_MSG_IFUP; 75static void atl1c_pcie_patch(struct atl1c_hw *hw) 76{ 77 u32 mst_data, data; 78 79 /* pclk sel could switch to 25M */ 80 AT_READ_REG(hw, REG_MASTER_CTRL, &mst_data); 81 mst_data &= ~MASTER_CTRL_CLK_SEL_DIS; 82 AT_WRITE_REG(hw, REG_MASTER_CTRL, mst_data); 83 84 /* WoL/PCIE related settings */ 85 if (hw->nic_type == athr_l1c || hw->nic_type == athr_l2c) { 86 AT_READ_REG(hw, REG_PCIE_PHYMISC, &data); 87 data |= PCIE_PHYMISC_FORCE_RCV_DET; 88 AT_WRITE_REG(hw, REG_PCIE_PHYMISC, data); 89 } else { /* new dev set bit5 of MASTER */ 90 if (!(mst_data & MASTER_CTRL_WAKEN_25M)) 91 AT_WRITE_REG(hw, REG_MASTER_CTRL, 92 mst_data | MASTER_CTRL_WAKEN_25M); 93 } 94 /* aspm/PCIE setting only for l2cb 1.0 */ 95 if (hw->nic_type == athr_l2c_b && hw->revision_id == L2CB_V10) { 96 AT_READ_REG(hw, REG_PCIE_PHYMISC2, &data); 97 data = FIELD_SETX(data, PCIE_PHYMISC2_CDR_BW, 98 L2CB1_PCIE_PHYMISC2_CDR_BW); 99 data = FIELD_SETX(data, PCIE_PHYMISC2_L0S_TH, 100 L2CB1_PCIE_PHYMISC2_L0S_TH); 101 AT_WRITE_REG(hw, REG_PCIE_PHYMISC2, data); 102 /* extend L1 sync timer */ 103 AT_READ_REG(hw, REG_LINK_CTRL, &data); 104 data |= LINK_CTRL_EXT_SYNC; 105 AT_WRITE_REG(hw, REG_LINK_CTRL, data); 106 } 107 /* l2cb 1.x & l1d 1.x */ 108 if (hw->nic_type == athr_l2c_b || hw->nic_type == athr_l1d) { 109 AT_READ_REG(hw, REG_PM_CTRL, &data); 110 data |= PM_CTRL_L0S_BUFSRX_EN; 111 AT_WRITE_REG(hw, REG_PM_CTRL, data); 112 /* clear vendor msg */ 113 AT_READ_REG(hw, REG_DMA_DBG, &data); 114 AT_WRITE_REG(hw, REG_DMA_DBG, data & ~DMA_DBG_VENDOR_MSG); 115 } 116} 117 118/* FIXME: no need any more ? */ 119/* 120 * atl1c_init_pcie - init PCIE module 121 */ 122static void atl1c_reset_pcie(struct atl1c_hw *hw, u32 flag) 123{ 124 u32 data; 125 u32 pci_cmd; 126 struct pci_dev *pdev = hw->adapter->pdev; 127 int pos; 128 129 AT_READ_REG(hw, PCI_COMMAND, &pci_cmd); 130 pci_cmd &= ~PCI_COMMAND_INTX_DISABLE; 131 pci_cmd |= (PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER | 132 PCI_COMMAND_IO); 133 AT_WRITE_REG(hw, PCI_COMMAND, pci_cmd); 134 135 /* 136 * Clear any PowerSaveing Settings 137 */ 138 pci_enable_wake(pdev, PCI_D3hot, 0); 139 pci_enable_wake(pdev, PCI_D3cold, 0); 140 /* wol sts read-clear */ 141 AT_READ_REG(hw, REG_WOL_CTRL, &data); 142 AT_WRITE_REG(hw, REG_WOL_CTRL, 0); 143 144 /* 145 * Mask some pcie error bits 146 */ 147 pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_ERR); 148 if (pos) { 149 pci_read_config_dword(pdev, pos + PCI_ERR_UNCOR_SEVER, &data); 150 data &= ~(PCI_ERR_UNC_DLP | PCI_ERR_UNC_FCP); 151 pci_write_config_dword(pdev, pos + PCI_ERR_UNCOR_SEVER, data); 152 } 153 /* clear error status */ 154 pcie_capability_write_word(pdev, PCI_EXP_DEVSTA, 155 PCI_EXP_DEVSTA_NFED | 156 PCI_EXP_DEVSTA_FED | 157 PCI_EXP_DEVSTA_CED | 158 PCI_EXP_DEVSTA_URD); 159 160 AT_READ_REG(hw, REG_LTSSM_ID_CTRL, &data); 161 data &= ~LTSSM_ID_EN_WRO; 162 AT_WRITE_REG(hw, REG_LTSSM_ID_CTRL, data); 163 164 atl1c_pcie_patch(hw); 165 if (flag & ATL1C_PCIE_L0S_L1_DISABLE) 166 atl1c_disable_l0s_l1(hw); 167 168 msleep(5); 169} 170 171/** 172 * atl1c_irq_enable - Enable default interrupt generation settings 173 * @adapter: board private structure 174 */ 175static inline void atl1c_irq_enable(struct atl1c_adapter *adapter) 176{ 177 if (likely(atomic_dec_and_test(&adapter->irq_sem))) { 178 AT_WRITE_REG(&adapter->hw, REG_ISR, 0x7FFFFFFF); 179 AT_WRITE_REG(&adapter->hw, REG_IMR, adapter->hw.intr_mask); 180 AT_WRITE_FLUSH(&adapter->hw); 181 } 182} 183 184/** 185 * atl1c_irq_disable - Mask off interrupt generation on the NIC 186 * @adapter: board private structure 187 */ 188static inline void atl1c_irq_disable(struct atl1c_adapter *adapter) 189{ 190 atomic_inc(&adapter->irq_sem); 191 AT_WRITE_REG(&adapter->hw, REG_IMR, 0); 192 AT_WRITE_REG(&adapter->hw, REG_ISR, ISR_DIS_INT); 193 AT_WRITE_FLUSH(&adapter->hw); 194 synchronize_irq(adapter->pdev->irq); 195} 196 197/** 198 * atl1c_irq_reset - reset interrupt confiure on the NIC 199 * @adapter: board private structure 200 */ 201static inline void atl1c_irq_reset(struct atl1c_adapter *adapter) 202{ 203 atomic_set(&adapter->irq_sem, 1); 204 atl1c_irq_enable(adapter); 205} 206 207/* 208 * atl1c_wait_until_idle - wait up to AT_HW_MAX_IDLE_DELAY reads 209 * of the idle status register until the device is actually idle 210 */ 211static u32 atl1c_wait_until_idle(struct atl1c_hw *hw, u32 modu_ctrl) 212{ 213 int timeout; 214 u32 data; 215 216 for (timeout = 0; timeout < AT_HW_MAX_IDLE_DELAY; timeout++) { 217 AT_READ_REG(hw, REG_IDLE_STATUS, &data); 218 if ((data & modu_ctrl) == 0) 219 return 0; 220 msleep(1); 221 } 222 return data; 223} 224 225/** 226 * atl1c_phy_config - Timer Call-back 227 * @data: pointer to netdev cast into an unsigned long 228 */ 229static void atl1c_phy_config(unsigned long data) 230{ 231 struct atl1c_adapter *adapter = (struct atl1c_adapter *) data; 232 struct atl1c_hw *hw = &adapter->hw; 233 unsigned long flags; 234 235 spin_lock_irqsave(&adapter->mdio_lock, flags); 236 atl1c_restart_autoneg(hw); 237 spin_unlock_irqrestore(&adapter->mdio_lock, flags); 238} 239 240void atl1c_reinit_locked(struct atl1c_adapter *adapter) 241{ 242 WARN_ON(in_interrupt()); 243 atl1c_down(adapter); 244 atl1c_up(adapter); 245 clear_bit(__AT_RESETTING, &adapter->flags); 246} 247 248static void atl1c_check_link_status(struct atl1c_adapter *adapter) 249{ 250 struct atl1c_hw *hw = &adapter->hw; 251 struct net_device *netdev = adapter->netdev; 252 struct pci_dev *pdev = adapter->pdev; 253 int err; 254 unsigned long flags; 255 u16 speed, duplex, phy_data; 256 257 spin_lock_irqsave(&adapter->mdio_lock, flags); 258 /* MII_BMSR must read twise */ 259 atl1c_read_phy_reg(hw, MII_BMSR, &phy_data); 260 atl1c_read_phy_reg(hw, MII_BMSR, &phy_data); 261 spin_unlock_irqrestore(&adapter->mdio_lock, flags); 262 263 if ((phy_data & BMSR_LSTATUS) == 0) { 264 /* link down */ 265 netif_carrier_off(netdev); 266 hw->hibernate = true; 267 if (atl1c_reset_mac(hw) != 0) 268 if (netif_msg_hw(adapter)) 269 dev_warn(&pdev->dev, "reset mac failed\n"); 270 atl1c_set_aspm(hw, SPEED_0); 271 atl1c_post_phy_linkchg(hw, SPEED_0); 272 atl1c_reset_dma_ring(adapter); 273 atl1c_configure(adapter); 274 } else { 275 /* Link Up */ 276 hw->hibernate = false; 277 spin_lock_irqsave(&adapter->mdio_lock, flags); 278 err = atl1c_get_speed_and_duplex(hw, &speed, &duplex); 279 spin_unlock_irqrestore(&adapter->mdio_lock, flags); 280 if (unlikely(err)) 281 return; 282 /* link result is our setting */ 283 if (adapter->link_speed != speed || 284 adapter->link_duplex != duplex) { 285 adapter->link_speed = speed; 286 adapter->link_duplex = duplex; 287 atl1c_set_aspm(hw, speed); 288 atl1c_post_phy_linkchg(hw, speed); 289 atl1c_start_mac(adapter); 290 if (netif_msg_link(adapter)) 291 dev_info(&pdev->dev, 292 "%s: %s NIC Link is Up<%d Mbps %s>\n", 293 atl1c_driver_name, netdev->name, 294 adapter->link_speed, 295 adapter->link_duplex == FULL_DUPLEX ? 296 "Full Duplex" : "Half Duplex"); 297 } 298 if (!netif_carrier_ok(netdev)) 299 netif_carrier_on(netdev); 300 } 301} 302 303static void atl1c_link_chg_event(struct atl1c_adapter *adapter) 304{ 305 struct net_device *netdev = adapter->netdev; 306 struct pci_dev *pdev = adapter->pdev; 307 u16 phy_data; 308 u16 link_up; 309 310 spin_lock(&adapter->mdio_lock); 311 atl1c_read_phy_reg(&adapter->hw, MII_BMSR, &phy_data); 312 atl1c_read_phy_reg(&adapter->hw, MII_BMSR, &phy_data); 313 spin_unlock(&adapter->mdio_lock); 314 link_up = phy_data & BMSR_LSTATUS; 315 /* notify upper layer link down ASAP */ 316 if (!link_up) { 317 if (netif_carrier_ok(netdev)) { 318 /* old link state: Up */ 319 netif_carrier_off(netdev); 320 if (netif_msg_link(adapter)) 321 dev_info(&pdev->dev, 322 "%s: %s NIC Link is Down\n", 323 atl1c_driver_name, netdev->name); 324 adapter->link_speed = SPEED_0; 325 } 326 } 327 328 set_bit(ATL1C_WORK_EVENT_LINK_CHANGE, &adapter->work_event); 329 schedule_work(&adapter->common_task); 330} 331 332static void atl1c_common_task(struct work_struct *work) 333{ 334 struct atl1c_adapter *adapter; 335 struct net_device *netdev; 336 337 adapter = container_of(work, struct atl1c_adapter, common_task); 338 netdev = adapter->netdev; 339 340 if (test_bit(__AT_DOWN, &adapter->flags)) 341 return; 342 343 if (test_and_clear_bit(ATL1C_WORK_EVENT_RESET, &adapter->work_event)) { 344 netif_device_detach(netdev); 345 atl1c_down(adapter); 346 atl1c_up(adapter); 347 netif_device_attach(netdev); 348 } 349 350 if (test_and_clear_bit(ATL1C_WORK_EVENT_LINK_CHANGE, 351 &adapter->work_event)) { 352 atl1c_irq_disable(adapter); 353 atl1c_check_link_status(adapter); 354 atl1c_irq_enable(adapter); 355 } 356} 357 358 359static void atl1c_del_timer(struct atl1c_adapter *adapter) 360{ 361 del_timer_sync(&adapter->phy_config_timer); 362} 363 364 365/** 366 * atl1c_tx_timeout - Respond to a Tx Hang 367 * @netdev: network interface device structure 368 */ 369static void atl1c_tx_timeout(struct net_device *netdev) 370{ 371 struct atl1c_adapter *adapter = netdev_priv(netdev); 372 373 /* Do the reset outside of interrupt context */ 374 set_bit(ATL1C_WORK_EVENT_RESET, &adapter->work_event); 375 schedule_work(&adapter->common_task); 376} 377 378/** 379 * atl1c_set_multi - Multicast and Promiscuous mode set 380 * @netdev: network interface device structure 381 * 382 * The set_multi entry point is called whenever the multicast address 383 * list or the network interface flags are updated. This routine is 384 * responsible for configuring the hardware for proper multicast, 385 * promiscuous mode, and all-multi behavior. 386 */ 387static void atl1c_set_multi(struct net_device *netdev) 388{ 389 struct atl1c_adapter *adapter = netdev_priv(netdev); 390 struct atl1c_hw *hw = &adapter->hw; 391 struct netdev_hw_addr *ha; 392 u32 mac_ctrl_data; 393 u32 hash_value; 394 395 /* Check for Promiscuous and All Multicast modes */ 396 AT_READ_REG(hw, REG_MAC_CTRL, &mac_ctrl_data); 397 398 if (netdev->flags & IFF_PROMISC) { 399 mac_ctrl_data |= MAC_CTRL_PROMIS_EN; 400 } else if (netdev->flags & IFF_ALLMULTI) { 401 mac_ctrl_data |= MAC_CTRL_MC_ALL_EN; 402 mac_ctrl_data &= ~MAC_CTRL_PROMIS_EN; 403 } else { 404 mac_ctrl_data &= ~(MAC_CTRL_PROMIS_EN | MAC_CTRL_MC_ALL_EN); 405 } 406 407 AT_WRITE_REG(hw, REG_MAC_CTRL, mac_ctrl_data); 408 409 /* clear the old settings from the multicast hash table */ 410 AT_WRITE_REG(hw, REG_RX_HASH_TABLE, 0); 411 AT_WRITE_REG_ARRAY(hw, REG_RX_HASH_TABLE, 1, 0); 412 413 /* comoute mc addresses' hash value ,and put it into hash table */ 414 netdev_for_each_mc_addr(ha, netdev) { 415 hash_value = atl1c_hash_mc_addr(hw, ha->addr); 416 atl1c_hash_set(hw, hash_value); 417 } 418} 419 420static void __atl1c_vlan_mode(netdev_features_t features, u32 *mac_ctrl_data) 421{ 422 if (features & NETIF_F_HW_VLAN_CTAG_RX) { 423 /* enable VLAN tag insert/strip */ 424 *mac_ctrl_data |= MAC_CTRL_RMV_VLAN; 425 } else { 426 /* disable VLAN tag insert/strip */ 427 *mac_ctrl_data &= ~MAC_CTRL_RMV_VLAN; 428 } 429} 430 431static void atl1c_vlan_mode(struct net_device *netdev, 432 netdev_features_t features) 433{ 434 struct atl1c_adapter *adapter = netdev_priv(netdev); 435 struct pci_dev *pdev = adapter->pdev; 436 u32 mac_ctrl_data = 0; 437 438 if (netif_msg_pktdata(adapter)) 439 dev_dbg(&pdev->dev, "atl1c_vlan_mode\n"); 440 441 atl1c_irq_disable(adapter); 442 AT_READ_REG(&adapter->hw, REG_MAC_CTRL, &mac_ctrl_data); 443 __atl1c_vlan_mode(features, &mac_ctrl_data); 444 AT_WRITE_REG(&adapter->hw, REG_MAC_CTRL, mac_ctrl_data); 445 atl1c_irq_enable(adapter); 446} 447 448static void atl1c_restore_vlan(struct atl1c_adapter *adapter) 449{ 450 struct pci_dev *pdev = adapter->pdev; 451 452 if (netif_msg_pktdata(adapter)) 453 dev_dbg(&pdev->dev, "atl1c_restore_vlan\n"); 454 atl1c_vlan_mode(adapter->netdev, adapter->netdev->features); 455} 456 457/** 458 * atl1c_set_mac - Change the Ethernet Address of the NIC 459 * @netdev: network interface device structure 460 * @p: pointer to an address structure 461 * 462 * Returns 0 on success, negative on failure 463 */ 464static int atl1c_set_mac_addr(struct net_device *netdev, void *p) 465{ 466 struct atl1c_adapter *adapter = netdev_priv(netdev); 467 struct sockaddr *addr = p; 468 469 if (!is_valid_ether_addr(addr->sa_data)) 470 return -EADDRNOTAVAIL; 471 472 if (netif_running(netdev)) 473 return -EBUSY; 474 475 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); 476 memcpy(adapter->hw.mac_addr, addr->sa_data, netdev->addr_len); 477 478 atl1c_hw_set_mac_addr(&adapter->hw, adapter->hw.mac_addr); 479 480 return 0; 481} 482 483static void atl1c_set_rxbufsize(struct atl1c_adapter *adapter, 484 struct net_device *dev) 485{ 486 unsigned int head_size; 487 int mtu = dev->mtu; 488 489 adapter->rx_buffer_len = mtu > AT_RX_BUF_SIZE ? 490 roundup(mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN, 8) : AT_RX_BUF_SIZE; 491 492 head_size = SKB_DATA_ALIGN(adapter->rx_buffer_len + NET_SKB_PAD) + 493 SKB_DATA_ALIGN(sizeof(struct skb_shared_info)); 494 adapter->rx_frag_size = roundup_pow_of_two(head_size); 495} 496 497static netdev_features_t atl1c_fix_features(struct net_device *netdev, 498 netdev_features_t features) 499{ 500 /* 501 * Since there is no support for separate rx/tx vlan accel 502 * enable/disable make sure tx flag is always in same state as rx. 503 */ 504 if (features & NETIF_F_HW_VLAN_CTAG_RX) 505 features |= NETIF_F_HW_VLAN_CTAG_TX; 506 else 507 features &= ~NETIF_F_HW_VLAN_CTAG_TX; 508 509 if (netdev->mtu > MAX_TSO_FRAME_SIZE) 510 features &= ~(NETIF_F_TSO | NETIF_F_TSO6); 511 512 return features; 513} 514 515static int atl1c_set_features(struct net_device *netdev, 516 netdev_features_t features) 517{ 518 netdev_features_t changed = netdev->features ^ features; 519 520 if (changed & NETIF_F_HW_VLAN_CTAG_RX) 521 atl1c_vlan_mode(netdev, features); 522 523 return 0; 524} 525 526/** 527 * atl1c_change_mtu - Change the Maximum Transfer Unit 528 * @netdev: network interface device structure 529 * @new_mtu: new value for maximum frame size 530 * 531 * Returns 0 on success, negative on failure 532 */ 533static int atl1c_change_mtu(struct net_device *netdev, int new_mtu) 534{ 535 struct atl1c_adapter *adapter = netdev_priv(netdev); 536 struct atl1c_hw *hw = &adapter->hw; 537 int old_mtu = netdev->mtu; 538 int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN; 539 540 /* Fast Ethernet controller doesn't support jumbo packet */ 541 if (((hw->nic_type == athr_l2c || 542 hw->nic_type == athr_l2c_b || 543 hw->nic_type == athr_l2c_b2) && new_mtu > ETH_DATA_LEN) || 544 max_frame < ETH_ZLEN + ETH_FCS_LEN || 545 max_frame > MAX_JUMBO_FRAME_SIZE) { 546 if (netif_msg_link(adapter)) 547 dev_warn(&adapter->pdev->dev, "invalid MTU setting\n"); 548 return -EINVAL; 549 } 550 /* set MTU */ 551 if (old_mtu != new_mtu && netif_running(netdev)) { 552 while (test_and_set_bit(__AT_RESETTING, &adapter->flags)) 553 msleep(1); 554 netdev->mtu = new_mtu; 555 adapter->hw.max_frame_size = new_mtu; 556 atl1c_set_rxbufsize(adapter, netdev); 557 atl1c_down(adapter); 558 netdev_update_features(netdev); 559 atl1c_up(adapter); 560 clear_bit(__AT_RESETTING, &adapter->flags); 561 } 562 return 0; 563} 564 565/* 566 * caller should hold mdio_lock 567 */ 568static int atl1c_mdio_read(struct net_device *netdev, int phy_id, int reg_num) 569{ 570 struct atl1c_adapter *adapter = netdev_priv(netdev); 571 u16 result; 572 573 atl1c_read_phy_reg(&adapter->hw, reg_num, &result); 574 return result; 575} 576 577static void atl1c_mdio_write(struct net_device *netdev, int phy_id, 578 int reg_num, int val) 579{ 580 struct atl1c_adapter *adapter = netdev_priv(netdev); 581 582 atl1c_write_phy_reg(&adapter->hw, reg_num, val); 583} 584 585static int atl1c_mii_ioctl(struct net_device *netdev, 586 struct ifreq *ifr, int cmd) 587{ 588 struct atl1c_adapter *adapter = netdev_priv(netdev); 589 struct pci_dev *pdev = adapter->pdev; 590 struct mii_ioctl_data *data = if_mii(ifr); 591 unsigned long flags; 592 int retval = 0; 593 594 if (!netif_running(netdev)) 595 return -EINVAL; 596 597 spin_lock_irqsave(&adapter->mdio_lock, flags); 598 switch (cmd) { 599 case SIOCGMIIPHY: 600 data->phy_id = 0; 601 break; 602 603 case SIOCGMIIREG: 604 if (atl1c_read_phy_reg(&adapter->hw, data->reg_num & 0x1F, 605 &data->val_out)) { 606 retval = -EIO; 607 goto out; 608 } 609 break; 610 611 case SIOCSMIIREG: 612 if (data->reg_num & ~(0x1F)) { 613 retval = -EFAULT; 614 goto out; 615 } 616 617 dev_dbg(&pdev->dev, "<atl1c_mii_ioctl> write %x %x", 618 data->reg_num, data->val_in); 619 if (atl1c_write_phy_reg(&adapter->hw, 620 data->reg_num, data->val_in)) { 621 retval = -EIO; 622 goto out; 623 } 624 break; 625 626 default: 627 retval = -EOPNOTSUPP; 628 break; 629 } 630out: 631 spin_unlock_irqrestore(&adapter->mdio_lock, flags); 632 return retval; 633} 634 635static int atl1c_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) 636{ 637 switch (cmd) { 638 case SIOCGMIIPHY: 639 case SIOCGMIIREG: 640 case SIOCSMIIREG: 641 return atl1c_mii_ioctl(netdev, ifr, cmd); 642 default: 643 return -EOPNOTSUPP; 644 } 645} 646 647/** 648 * atl1c_alloc_queues - Allocate memory for all rings 649 * @adapter: board private structure to initialize 650 * 651 */ 652static int atl1c_alloc_queues(struct atl1c_adapter *adapter) 653{ 654 return 0; 655} 656 657static void atl1c_set_mac_type(struct atl1c_hw *hw) 658{ 659 switch (hw->device_id) { 660 case PCI_DEVICE_ID_ATTANSIC_L2C: 661 hw->nic_type = athr_l2c; 662 break; 663 case PCI_DEVICE_ID_ATTANSIC_L1C: 664 hw->nic_type = athr_l1c; 665 break; 666 case PCI_DEVICE_ID_ATHEROS_L2C_B: 667 hw->nic_type = athr_l2c_b; 668 break; 669 case PCI_DEVICE_ID_ATHEROS_L2C_B2: 670 hw->nic_type = athr_l2c_b2; 671 break; 672 case PCI_DEVICE_ID_ATHEROS_L1D: 673 hw->nic_type = athr_l1d; 674 break; 675 case PCI_DEVICE_ID_ATHEROS_L1D_2_0: 676 hw->nic_type = athr_l1d_2; 677 break; 678 default: 679 break; 680 } 681} 682 683static int atl1c_setup_mac_funcs(struct atl1c_hw *hw) 684{ 685 u32 link_ctrl_data; 686 687 atl1c_set_mac_type(hw); 688 AT_READ_REG(hw, REG_LINK_CTRL, &link_ctrl_data); 689 690 hw->ctrl_flags = ATL1C_INTR_MODRT_ENABLE | 691 ATL1C_TXQ_MODE_ENHANCE; 692 hw->ctrl_flags |= ATL1C_ASPM_L0S_SUPPORT | 693 ATL1C_ASPM_L1_SUPPORT; 694 hw->ctrl_flags |= ATL1C_ASPM_CTRL_MON; 695 696 if (hw->nic_type == athr_l1c || 697 hw->nic_type == athr_l1d || 698 hw->nic_type == athr_l1d_2) 699 hw->link_cap_flags |= ATL1C_LINK_CAP_1000M; 700 return 0; 701} 702 703struct atl1c_platform_patch { 704 u16 pci_did; 705 u8 pci_revid; 706 u16 subsystem_vid; 707 u16 subsystem_did; 708 u32 patch_flag; 709#define ATL1C_LINK_PATCH 0x1 710}; 711static const struct atl1c_platform_patch plats[] = { 712{0x2060, 0xC1, 0x1019, 0x8152, 0x1}, 713{0x2060, 0xC1, 0x1019, 0x2060, 0x1}, 714{0x2060, 0xC1, 0x1019, 0xE000, 0x1}, 715{0x2062, 0xC0, 0x1019, 0x8152, 0x1}, 716{0x2062, 0xC0, 0x1019, 0x2062, 0x1}, 717{0x2062, 0xC0, 0x1458, 0xE000, 0x1}, 718{0x2062, 0xC1, 0x1019, 0x8152, 0x1}, 719{0x2062, 0xC1, 0x1019, 0x2062, 0x1}, 720{0x2062, 0xC1, 0x1458, 0xE000, 0x1}, 721{0x2062, 0xC1, 0x1565, 0x2802, 0x1}, 722{0x2062, 0xC1, 0x1565, 0x2801, 0x1}, 723{0x1073, 0xC0, 0x1019, 0x8151, 0x1}, 724{0x1073, 0xC0, 0x1019, 0x1073, 0x1}, 725{0x1073, 0xC0, 0x1458, 0xE000, 0x1}, 726{0x1083, 0xC0, 0x1458, 0xE000, 0x1}, 727{0x1083, 0xC0, 0x1019, 0x8151, 0x1}, 728{0x1083, 0xC0, 0x1019, 0x1083, 0x1}, 729{0x1083, 0xC0, 0x1462, 0x7680, 0x1}, 730{0x1083, 0xC0, 0x1565, 0x2803, 0x1}, 731{0}, 732}; 733 734static void atl1c_patch_assign(struct atl1c_hw *hw) 735{ 736 struct pci_dev *pdev = hw->adapter->pdev; 737 u32 misc_ctrl; 738 int i = 0; 739 740 hw->msi_lnkpatch = false; 741 742 while (plats[i].pci_did != 0) { 743 if (plats[i].pci_did == hw->device_id && 744 plats[i].pci_revid == hw->revision_id && 745 plats[i].subsystem_vid == hw->subsystem_vendor_id && 746 plats[i].subsystem_did == hw->subsystem_id) { 747 if (plats[i].patch_flag & ATL1C_LINK_PATCH) 748 hw->msi_lnkpatch = true; 749 } 750 i++; 751 } 752 753 if (hw->device_id == PCI_DEVICE_ID_ATHEROS_L2C_B2 && 754 hw->revision_id == L2CB_V21) { 755 /* config access mode */ 756 pci_write_config_dword(pdev, REG_PCIE_IND_ACC_ADDR, 757 REG_PCIE_DEV_MISC_CTRL); 758 pci_read_config_dword(pdev, REG_PCIE_IND_ACC_DATA, &misc_ctrl); 759 misc_ctrl &= ~0x100; 760 pci_write_config_dword(pdev, REG_PCIE_IND_ACC_ADDR, 761 REG_PCIE_DEV_MISC_CTRL); 762 pci_write_config_dword(pdev, REG_PCIE_IND_ACC_DATA, misc_ctrl); 763 } 764} 765/** 766 * atl1c_sw_init - Initialize general software structures (struct atl1c_adapter) 767 * @adapter: board private structure to initialize 768 * 769 * atl1c_sw_init initializes the Adapter private data structure. 770 * Fields are initialized based on PCI device information and 771 * OS network device settings (MTU size). 772 */ 773static int atl1c_sw_init(struct atl1c_adapter *adapter) 774{ 775 struct atl1c_hw *hw = &adapter->hw; 776 struct pci_dev *pdev = adapter->pdev; 777 u32 revision; 778 779 780 adapter->wol = 0; 781 device_set_wakeup_enable(&pdev->dev, false); 782 adapter->link_speed = SPEED_0; 783 adapter->link_duplex = FULL_DUPLEX; 784 adapter->tpd_ring[0].count = 1024; 785 adapter->rfd_ring.count = 512; 786 787 hw->vendor_id = pdev->vendor; 788 hw->device_id = pdev->device; 789 hw->subsystem_vendor_id = pdev->subsystem_vendor; 790 hw->subsystem_id = pdev->subsystem_device; 791 pci_read_config_dword(pdev, PCI_CLASS_REVISION, &revision); 792 hw->revision_id = revision & 0xFF; 793 /* before link up, we assume hibernate is true */ 794 hw->hibernate = true; 795 hw->media_type = MEDIA_TYPE_AUTO_SENSOR; 796 if (atl1c_setup_mac_funcs(hw) != 0) { 797 dev_err(&pdev->dev, "set mac function pointers failed\n"); 798 return -1; 799 } 800 atl1c_patch_assign(hw); 801 802 hw->intr_mask = IMR_NORMAL_MASK; 803 hw->phy_configured = false; 804 hw->preamble_len = 7; 805 hw->max_frame_size = adapter->netdev->mtu; 806 hw->autoneg_advertised = ADVERTISED_Autoneg; 807 hw->indirect_tab = 0xE4E4E4E4; 808 hw->base_cpu = 0; 809 810 hw->ict = 50000; /* 100ms */ 811 hw->smb_timer = 200000; /* 400ms */ 812 hw->rx_imt = 200; 813 hw->tx_imt = 1000; 814 815 hw->tpd_burst = 5; 816 hw->rfd_burst = 8; 817 hw->dma_order = atl1c_dma_ord_out; 818 hw->dmar_block = atl1c_dma_req_1024; 819 820 if (atl1c_alloc_queues(adapter)) { 821 dev_err(&pdev->dev, "Unable to allocate memory for queues\n"); 822 return -ENOMEM; 823 } 824 /* TODO */ 825 atl1c_set_rxbufsize(adapter, adapter->netdev); 826 atomic_set(&adapter->irq_sem, 1); 827 spin_lock_init(&adapter->mdio_lock); 828 spin_lock_init(&adapter->tx_lock); 829 set_bit(__AT_DOWN, &adapter->flags); 830 831 return 0; 832} 833 834static inline void atl1c_clean_buffer(struct pci_dev *pdev, 835 struct atl1c_buffer *buffer_info) 836{ 837 u16 pci_driection; 838 if (buffer_info->flags & ATL1C_BUFFER_FREE) 839 return; 840 if (buffer_info->dma) { 841 if (buffer_info->flags & ATL1C_PCIMAP_FROMDEVICE) 842 pci_driection = PCI_DMA_FROMDEVICE; 843 else 844 pci_driection = PCI_DMA_TODEVICE; 845 846 if (buffer_info->flags & ATL1C_PCIMAP_SINGLE) 847 pci_unmap_single(pdev, buffer_info->dma, 848 buffer_info->length, pci_driection); 849 else if (buffer_info->flags & ATL1C_PCIMAP_PAGE) 850 pci_unmap_page(pdev, buffer_info->dma, 851 buffer_info->length, pci_driection); 852 } 853 if (buffer_info->skb) 854 dev_consume_skb_any(buffer_info->skb); 855 buffer_info->dma = 0; 856 buffer_info->skb = NULL; 857 ATL1C_SET_BUFFER_STATE(buffer_info, ATL1C_BUFFER_FREE); 858} 859/** 860 * atl1c_clean_tx_ring - Free Tx-skb 861 * @adapter: board private structure 862 */ 863static void atl1c_clean_tx_ring(struct atl1c_adapter *adapter, 864 enum atl1c_trans_queue type) 865{ 866 struct atl1c_tpd_ring *tpd_ring = &adapter->tpd_ring[type]; 867 struct atl1c_buffer *buffer_info; 868 struct pci_dev *pdev = adapter->pdev; 869 u16 index, ring_count; 870 871 ring_count = tpd_ring->count; 872 for (index = 0; index < ring_count; index++) { 873 buffer_info = &tpd_ring->buffer_info[index]; 874 atl1c_clean_buffer(pdev, buffer_info); 875 } 876 877 /* Zero out Tx-buffers */ 878 memset(tpd_ring->desc, 0, sizeof(struct atl1c_tpd_desc) * 879 ring_count); 880 atomic_set(&tpd_ring->next_to_clean, 0); 881 tpd_ring->next_to_use = 0; 882} 883 884/** 885 * atl1c_clean_rx_ring - Free rx-reservation skbs 886 * @adapter: board private structure 887 */ 888static void atl1c_clean_rx_ring(struct atl1c_adapter *adapter) 889{ 890 struct atl1c_rfd_ring *rfd_ring = &adapter->rfd_ring; 891 struct atl1c_rrd_ring *rrd_ring = &adapter->rrd_ring; 892 struct atl1c_buffer *buffer_info; 893 struct pci_dev *pdev = adapter->pdev; 894 int j; 895 896 for (j = 0; j < rfd_ring->count; j++) { 897 buffer_info = &rfd_ring->buffer_info[j]; 898 atl1c_clean_buffer(pdev, buffer_info); 899 } 900 /* zero out the descriptor ring */ 901 memset(rfd_ring->desc, 0, rfd_ring->size); 902 rfd_ring->next_to_clean = 0; 903 rfd_ring->next_to_use = 0; 904 rrd_ring->next_to_use = 0; 905 rrd_ring->next_to_clean = 0; 906} 907 908/* 909 * Read / Write Ptr Initialize: 910 */ 911static void atl1c_init_ring_ptrs(struct atl1c_adapter *adapter) 912{ 913 struct atl1c_tpd_ring *tpd_ring = adapter->tpd_ring; 914 struct atl1c_rfd_ring *rfd_ring = &adapter->rfd_ring; 915 struct atl1c_rrd_ring *rrd_ring = &adapter->rrd_ring; 916 struct atl1c_buffer *buffer_info; 917 int i, j; 918 919 for (i = 0; i < AT_MAX_TRANSMIT_QUEUE; i++) { 920 tpd_ring[i].next_to_use = 0; 921 atomic_set(&tpd_ring[i].next_to_clean, 0); 922 buffer_info = tpd_ring[i].buffer_info; 923 for (j = 0; j < tpd_ring->count; j++) 924 ATL1C_SET_BUFFER_STATE(&buffer_info[i], 925 ATL1C_BUFFER_FREE); 926 } 927 rfd_ring->next_to_use = 0; 928 rfd_ring->next_to_clean = 0; 929 rrd_ring->next_to_use = 0; 930 rrd_ring->next_to_clean = 0; 931 for (j = 0; j < rfd_ring->count; j++) { 932 buffer_info = &rfd_ring->buffer_info[j]; 933 ATL1C_SET_BUFFER_STATE(buffer_info, ATL1C_BUFFER_FREE); 934 } 935} 936 937/** 938 * atl1c_free_ring_resources - Free Tx / RX descriptor Resources 939 * @adapter: board private structure 940 * 941 * Free all transmit software resources 942 */ 943static void atl1c_free_ring_resources(struct atl1c_adapter *adapter) 944{ 945 struct pci_dev *pdev = adapter->pdev; 946 947 pci_free_consistent(pdev, adapter->ring_header.size, 948 adapter->ring_header.desc, 949 adapter->ring_header.dma); 950 adapter->ring_header.desc = NULL; 951 952 /* Note: just free tdp_ring.buffer_info, 953 * it contain rfd_ring.buffer_info, do not double free */ 954 if (adapter->tpd_ring[0].buffer_info) { 955 kfree(adapter->tpd_ring[0].buffer_info); 956 adapter->tpd_ring[0].buffer_info = NULL; 957 } 958 if (adapter->rx_page) { 959 put_page(adapter->rx_page); 960 adapter->rx_page = NULL; 961 } 962} 963 964/** 965 * atl1c_setup_mem_resources - allocate Tx / RX descriptor resources 966 * @adapter: board private structure 967 * 968 * Return 0 on success, negative on failure 969 */ 970static int atl1c_setup_ring_resources(struct atl1c_adapter *adapter) 971{ 972 struct pci_dev *pdev = adapter->pdev; 973 struct atl1c_tpd_ring *tpd_ring = adapter->tpd_ring; 974 struct atl1c_rfd_ring *rfd_ring = &adapter->rfd_ring; 975 struct atl1c_rrd_ring *rrd_ring = &adapter->rrd_ring; 976 struct atl1c_ring_header *ring_header = &adapter->ring_header; 977 int size; 978 int i; 979 int count = 0; 980 int rx_desc_count = 0; 981 u32 offset = 0; 982 983 rrd_ring->count = rfd_ring->count; 984 for (i = 1; i < AT_MAX_TRANSMIT_QUEUE; i++) 985 tpd_ring[i].count = tpd_ring[0].count; 986 987 /* 2 tpd queue, one high priority queue, 988 * another normal priority queue */ 989 size = sizeof(struct atl1c_buffer) * (tpd_ring->count * 2 + 990 rfd_ring->count); 991 tpd_ring->buffer_info = kzalloc(size, GFP_KERNEL); 992 if (unlikely(!tpd_ring->buffer_info)) 993 goto err_nomem; 994 995 for (i = 0; i < AT_MAX_TRANSMIT_QUEUE; i++) { 996 tpd_ring[i].buffer_info = 997 (tpd_ring->buffer_info + count); 998 count += tpd_ring[i].count; 999 } 1000 1001 rfd_ring->buffer_info = 1002 (tpd_ring->buffer_info + count); 1003 count += rfd_ring->count; 1004 rx_desc_count += rfd_ring->count; 1005 1006 /* 1007 * real ring DMA buffer 1008 * each ring/block may need up to 8 bytes for alignment, hence the 1009 * additional bytes tacked onto the end. 1010 */ 1011 ring_header->size = size = 1012 sizeof(struct atl1c_tpd_desc) * tpd_ring->count * 2 + 1013 sizeof(struct atl1c_rx_free_desc) * rx_desc_count + 1014 sizeof(struct atl1c_recv_ret_status) * rx_desc_count + 1015 8 * 4; 1016 1017 ring_header->desc = dma_zalloc_coherent(&pdev->dev, ring_header->size, 1018 &ring_header->dma, GFP_KERNEL); 1019 if (unlikely(!ring_header->desc)) { 1020 dev_err(&pdev->dev, "could not get memory for DMA buffer\n"); 1021 goto err_nomem; 1022 } 1023 /* init TPD ring */ 1024 1025 tpd_ring[0].dma = roundup(ring_header->dma, 8); 1026 offset = tpd_ring[0].dma - ring_header->dma; 1027 for (i = 0; i < AT_MAX_TRANSMIT_QUEUE; i++) { 1028 tpd_ring[i].dma = ring_header->dma + offset; 1029 tpd_ring[i].desc = (u8 *) ring_header->desc + offset; 1030 tpd_ring[i].size = 1031 sizeof(struct atl1c_tpd_desc) * tpd_ring[i].count; 1032 offset += roundup(tpd_ring[i].size, 8); 1033 } 1034 /* init RFD ring */ 1035 rfd_ring->dma = ring_header->dma + offset; 1036 rfd_ring->desc = (u8 *) ring_header->desc + offset; 1037 rfd_ring->size = sizeof(struct atl1c_rx_free_desc) * rfd_ring->count; 1038 offset += roundup(rfd_ring->size, 8); 1039 1040 /* init RRD ring */ 1041 rrd_ring->dma = ring_header->dma + offset; 1042 rrd_ring->desc = (u8 *) ring_header->desc + offset; 1043 rrd_ring->size = sizeof(struct atl1c_recv_ret_status) * 1044 rrd_ring->count; 1045 offset += roundup(rrd_ring->size, 8); 1046 1047 return 0; 1048 1049err_nomem: 1050 kfree(tpd_ring->buffer_info); 1051 return -ENOMEM; 1052} 1053 1054static void atl1c_configure_des_ring(struct atl1c_adapter *adapter) 1055{ 1056 struct atl1c_hw *hw = &adapter->hw; 1057 struct atl1c_rfd_ring *rfd_ring = &adapter->rfd_ring; 1058 struct atl1c_rrd_ring *rrd_ring = &adapter->rrd_ring; 1059 struct atl1c_tpd_ring *tpd_ring = (struct atl1c_tpd_ring *) 1060 adapter->tpd_ring; 1061 1062 /* TPD */ 1063 AT_WRITE_REG(hw, REG_TX_BASE_ADDR_HI, 1064 (u32)((tpd_ring[atl1c_trans_normal].dma & 1065 AT_DMA_HI_ADDR_MASK) >> 32)); 1066 /* just enable normal priority TX queue */ 1067 AT_WRITE_REG(hw, REG_TPD_PRI0_ADDR_LO, 1068 (u32)(tpd_ring[atl1c_trans_normal].dma & 1069 AT_DMA_LO_ADDR_MASK)); 1070 AT_WRITE_REG(hw, REG_TPD_PRI1_ADDR_LO, 1071 (u32)(tpd_ring[atl1c_trans_high].dma & 1072 AT_DMA_LO_ADDR_MASK)); 1073 AT_WRITE_REG(hw, REG_TPD_RING_SIZE, 1074 (u32)(tpd_ring[0].count & TPD_RING_SIZE_MASK)); 1075 1076 1077 /* RFD */ 1078 AT_WRITE_REG(hw, REG_RX_BASE_ADDR_HI, 1079 (u32)((rfd_ring->dma & AT_DMA_HI_ADDR_MASK) >> 32)); 1080 AT_WRITE_REG(hw, REG_RFD0_HEAD_ADDR_LO, 1081 (u32)(rfd_ring->dma & AT_DMA_LO_ADDR_MASK)); 1082 1083 AT_WRITE_REG(hw, REG_RFD_RING_SIZE, 1084 rfd_ring->count & RFD_RING_SIZE_MASK); 1085 AT_WRITE_REG(hw, REG_RX_BUF_SIZE, 1086 adapter->rx_buffer_len & RX_BUF_SIZE_MASK); 1087 1088 /* RRD */ 1089 AT_WRITE_REG(hw, REG_RRD0_HEAD_ADDR_LO, 1090 (u32)(rrd_ring->dma & AT_DMA_LO_ADDR_MASK)); 1091 AT_WRITE_REG(hw, REG_RRD_RING_SIZE, 1092 (rrd_ring->count & RRD_RING_SIZE_MASK)); 1093 1094 if (hw->nic_type == athr_l2c_b) { 1095 AT_WRITE_REG(hw, REG_SRAM_RXF_LEN, 0x02a0L); 1096 AT_WRITE_REG(hw, REG_SRAM_TXF_LEN, 0x0100L); 1097 AT_WRITE_REG(hw, REG_SRAM_RXF_ADDR, 0x029f0000L); 1098 AT_WRITE_REG(hw, REG_SRAM_RFD0_INFO, 0x02bf02a0L); 1099 AT_WRITE_REG(hw, REG_SRAM_TXF_ADDR, 0x03bf02c0L); 1100 AT_WRITE_REG(hw, REG_SRAM_TRD_ADDR, 0x03df03c0L); 1101 AT_WRITE_REG(hw, REG_TXF_WATER_MARK, 0); /* TX watermark, to enter l1 state.*/ 1102 AT_WRITE_REG(hw, REG_RXD_DMA_CTRL, 0); /* RXD threshold.*/ 1103 } 1104 /* Load all of base address above */ 1105 AT_WRITE_REG(hw, REG_LOAD_PTR, 1); 1106} 1107 1108static void atl1c_configure_tx(struct atl1c_adapter *adapter) 1109{ 1110 struct atl1c_hw *hw = &adapter->hw; 1111 int max_pay_load; 1112 u16 tx_offload_thresh; 1113 u32 txq_ctrl_data; 1114 1115 tx_offload_thresh = MAX_TSO_FRAME_SIZE; 1116 AT_WRITE_REG(hw, REG_TX_TSO_OFFLOAD_THRESH, 1117 (tx_offload_thresh >> 3) & TX_TSO_OFFLOAD_THRESH_MASK); 1118 max_pay_load = pcie_get_readrq(adapter->pdev) >> 8; 1119 hw->dmar_block = min_t(u32, max_pay_load, hw->dmar_block); 1120 /* 1121 * if BIOS had changed the dam-read-max-length to an invalid value, 1122 * restore it to default value 1123 */ 1124 if (hw->dmar_block < DEVICE_CTRL_MAXRRS_MIN) { 1125 pcie_set_readrq(adapter->pdev, 128 << DEVICE_CTRL_MAXRRS_MIN); 1126 hw->dmar_block = DEVICE_CTRL_MAXRRS_MIN; 1127 } 1128 txq_ctrl_data = 1129 hw->nic_type == athr_l2c_b || hw->nic_type == athr_l2c_b2 ? 1130 L2CB_TXQ_CFGV : L1C_TXQ_CFGV; 1131 1132 AT_WRITE_REG(hw, REG_TXQ_CTRL, txq_ctrl_data); 1133} 1134 1135static void atl1c_configure_rx(struct atl1c_adapter *adapter) 1136{ 1137 struct atl1c_hw *hw = &adapter->hw; 1138 u32 rxq_ctrl_data; 1139 1140 rxq_ctrl_data = (hw->rfd_burst & RXQ_RFD_BURST_NUM_MASK) << 1141 RXQ_RFD_BURST_NUM_SHIFT; 1142 1143 if (hw->ctrl_flags & ATL1C_RX_IPV6_CHKSUM) 1144 rxq_ctrl_data |= IPV6_CHKSUM_CTRL_EN; 1145 1146 /* aspm for gigabit */ 1147 if (hw->nic_type != athr_l1d_2 && (hw->device_id & 1) != 0) 1148 rxq_ctrl_data = FIELD_SETX(rxq_ctrl_data, ASPM_THRUPUT_LIMIT, 1149 ASPM_THRUPUT_LIMIT_100M); 1150 1151 AT_WRITE_REG(hw, REG_RXQ_CTRL, rxq_ctrl_data); 1152} 1153 1154static void atl1c_configure_dma(struct atl1c_adapter *adapter) 1155{ 1156 struct atl1c_hw *hw = &adapter->hw; 1157 u32 dma_ctrl_data; 1158 1159 dma_ctrl_data = FIELDX(DMA_CTRL_RORDER_MODE, DMA_CTRL_RORDER_MODE_OUT) | 1160 DMA_CTRL_RREQ_PRI_DATA | 1161 FIELDX(DMA_CTRL_RREQ_BLEN, hw->dmar_block) | 1162 FIELDX(DMA_CTRL_WDLY_CNT, DMA_CTRL_WDLY_CNT_DEF) | 1163 FIELDX(DMA_CTRL_RDLY_CNT, DMA_CTRL_RDLY_CNT_DEF); 1164 1165 AT_WRITE_REG(hw, REG_DMA_CTRL, dma_ctrl_data); 1166} 1167 1168/* 1169 * Stop the mac, transmit and receive units 1170 * hw - Struct containing variables accessed by shared code 1171 * return : 0 or idle status (if error) 1172 */ 1173static int atl1c_stop_mac(struct atl1c_hw *hw) 1174{ 1175 u32 data; 1176 1177 AT_READ_REG(hw, REG_RXQ_CTRL, &data); 1178 data &= ~RXQ_CTRL_EN; 1179 AT_WRITE_REG(hw, REG_RXQ_CTRL, data); 1180 1181 AT_READ_REG(hw, REG_TXQ_CTRL, &data); 1182 data &= ~TXQ_CTRL_EN; 1183 AT_WRITE_REG(hw, REG_TXQ_CTRL, data); 1184 1185 atl1c_wait_until_idle(hw, IDLE_STATUS_RXQ_BUSY | IDLE_STATUS_TXQ_BUSY); 1186 1187 AT_READ_REG(hw, REG_MAC_CTRL, &data); 1188 data &= ~(MAC_CTRL_TX_EN | MAC_CTRL_RX_EN); 1189 AT_WRITE_REG(hw, REG_MAC_CTRL, data); 1190 1191 return (int)atl1c_wait_until_idle(hw, 1192 IDLE_STATUS_TXMAC_BUSY | IDLE_STATUS_RXMAC_BUSY); 1193} 1194 1195static void atl1c_start_mac(struct atl1c_adapter *adapter) 1196{ 1197 struct atl1c_hw *hw = &adapter->hw; 1198 u32 mac, txq, rxq; 1199 1200 hw->mac_duplex = adapter->link_duplex == FULL_DUPLEX ? true : false; 1201 hw->mac_speed = adapter->link_speed == SPEED_1000 ? 1202 atl1c_mac_speed_1000 : atl1c_mac_speed_10_100; 1203 1204 AT_READ_REG(hw, REG_TXQ_CTRL, &txq); 1205 AT_READ_REG(hw, REG_RXQ_CTRL, &rxq); 1206 AT_READ_REG(hw, REG_MAC_CTRL, &mac); 1207 1208 txq |= TXQ_CTRL_EN; 1209 rxq |= RXQ_CTRL_EN; 1210 mac |= MAC_CTRL_TX_EN | MAC_CTRL_TX_FLOW | 1211 MAC_CTRL_RX_EN | MAC_CTRL_RX_FLOW | 1212 MAC_CTRL_ADD_CRC | MAC_CTRL_PAD | 1213 MAC_CTRL_BC_EN | MAC_CTRL_SINGLE_PAUSE_EN | 1214 MAC_CTRL_HASH_ALG_CRC32; 1215 if (hw->mac_duplex) 1216 mac |= MAC_CTRL_DUPLX; 1217 else 1218 mac &= ~MAC_CTRL_DUPLX; 1219 mac = FIELD_SETX(mac, MAC_CTRL_SPEED, hw->mac_speed); 1220 mac = FIELD_SETX(mac, MAC_CTRL_PRMLEN, hw->preamble_len); 1221 1222 AT_WRITE_REG(hw, REG_TXQ_CTRL, txq); 1223 AT_WRITE_REG(hw, REG_RXQ_CTRL, rxq); 1224 AT_WRITE_REG(hw, REG_MAC_CTRL, mac); 1225} 1226 1227/* 1228 * Reset the transmit and receive units; mask and clear all interrupts. 1229 * hw - Struct containing variables accessed by shared code 1230 * return : 0 or idle status (if error) 1231 */ 1232static int atl1c_reset_mac(struct atl1c_hw *hw) 1233{ 1234 struct atl1c_adapter *adapter = hw->adapter; 1235 struct pci_dev *pdev = adapter->pdev; 1236 u32 ctrl_data = 0; 1237 1238 atl1c_stop_mac(hw); 1239 /* 1240 * Issue Soft Reset to the MAC. This will reset the chip's 1241 * transmit, receive, DMA. It will not effect 1242 * the current PCI configuration. The global reset bit is self- 1243 * clearing, and should clear within a microsecond. 1244 */ 1245 AT_READ_REG(hw, REG_MASTER_CTRL, &ctrl_data); 1246 ctrl_data |= MASTER_CTRL_OOB_DIS; 1247 AT_WRITE_REG(hw, REG_MASTER_CTRL, ctrl_data | MASTER_CTRL_SOFT_RST); 1248 1249 AT_WRITE_FLUSH(hw); 1250 msleep(10); 1251 /* Wait at least 10ms for All module to be Idle */ 1252 1253 if (atl1c_wait_until_idle(hw, IDLE_STATUS_MASK)) { 1254 dev_err(&pdev->dev, 1255 "MAC state machine can't be idle since" 1256 " disabled for 10ms second\n"); 1257 return -1; 1258 } 1259 AT_WRITE_REG(hw, REG_MASTER_CTRL, ctrl_data); 1260 1261 /* driver control speed/duplex */ 1262 AT_READ_REG(hw, REG_MAC_CTRL, &ctrl_data); 1263 AT_WRITE_REG(hw, REG_MAC_CTRL, ctrl_data | MAC_CTRL_SPEED_MODE_SW); 1264 1265 /* clk switch setting */ 1266 AT_READ_REG(hw, REG_SERDES, &ctrl_data); 1267 switch (hw->nic_type) { 1268 case athr_l2c_b: 1269 ctrl_data &= ~(SERDES_PHY_CLK_SLOWDOWN | 1270 SERDES_MAC_CLK_SLOWDOWN); 1271 AT_WRITE_REG(hw, REG_SERDES, ctrl_data); 1272 break; 1273 case athr_l2c_b2: 1274 case athr_l1d_2: 1275 ctrl_data |= SERDES_PHY_CLK_SLOWDOWN | SERDES_MAC_CLK_SLOWDOWN; 1276 AT_WRITE_REG(hw, REG_SERDES, ctrl_data); 1277 break; 1278 default: 1279 break; 1280 } 1281 1282 return 0; 1283} 1284 1285static void atl1c_disable_l0s_l1(struct atl1c_hw *hw) 1286{ 1287 u16 ctrl_flags = hw->ctrl_flags; 1288 1289 hw->ctrl_flags &= ~(ATL1C_ASPM_L0S_SUPPORT | ATL1C_ASPM_L1_SUPPORT); 1290 atl1c_set_aspm(hw, SPEED_0); 1291 hw->ctrl_flags = ctrl_flags; 1292} 1293 1294/* 1295 * Set ASPM state. 1296 * Enable/disable L0s/L1 depend on link state. 1297 */ 1298static void atl1c_set_aspm(struct atl1c_hw *hw, u16 link_speed) 1299{ 1300 u32 pm_ctrl_data; 1301 u32 link_l1_timer; 1302 1303 AT_READ_REG(hw, REG_PM_CTRL, &pm_ctrl_data); 1304 pm_ctrl_data &= ~(PM_CTRL_ASPM_L1_EN | 1305 PM_CTRL_ASPM_L0S_EN | 1306 PM_CTRL_MAC_ASPM_CHK); 1307 /* L1 timer */ 1308 if (hw->nic_type == athr_l2c_b2 || hw->nic_type == athr_l1d_2) { 1309 pm_ctrl_data &= ~PMCTRL_TXL1_AFTER_L0S; 1310 link_l1_timer = 1311 link_speed == SPEED_1000 || link_speed == SPEED_100 ? 1312 L1D_PMCTRL_L1_ENTRY_TM_16US : 1; 1313 pm_ctrl_data = FIELD_SETX(pm_ctrl_data, 1314 L1D_PMCTRL_L1_ENTRY_TM, link_l1_timer); 1315 } else { 1316 link_l1_timer = hw->nic_type == athr_l2c_b ? 1317 L2CB1_PM_CTRL_L1_ENTRY_TM : L1C_PM_CTRL_L1_ENTRY_TM; 1318 if (link_speed != SPEED_1000 && link_speed != SPEED_100) 1319 link_l1_timer = 1; 1320 pm_ctrl_data = FIELD_SETX(pm_ctrl_data, 1321 PM_CTRL_L1_ENTRY_TIMER, link_l1_timer); 1322 } 1323 1324 /* L0S/L1 enable */ 1325 if ((hw->ctrl_flags & ATL1C_ASPM_L0S_SUPPORT) && link_speed != SPEED_0) 1326 pm_ctrl_data |= PM_CTRL_ASPM_L0S_EN | PM_CTRL_MAC_ASPM_CHK; 1327 if (hw->ctrl_flags & ATL1C_ASPM_L1_SUPPORT) 1328 pm_ctrl_data |= PM_CTRL_ASPM_L1_EN | PM_CTRL_MAC_ASPM_CHK; 1329 1330 /* l2cb & l1d & l2cb2 & l1d2 */ 1331 if (hw->nic_type == athr_l2c_b || hw->nic_type == athr_l1d || 1332 hw->nic_type == athr_l2c_b2 || hw->nic_type == athr_l1d_2) { 1333 pm_ctrl_data = FIELD_SETX(pm_ctrl_data, 1334 PM_CTRL_PM_REQ_TIMER, PM_CTRL_PM_REQ_TO_DEF); 1335 pm_ctrl_data |= PM_CTRL_RCVR_WT_TIMER | 1336 PM_CTRL_SERDES_PD_EX_L1 | 1337 PM_CTRL_CLK_SWH_L1; 1338 pm_ctrl_data &= ~(PM_CTRL_SERDES_L1_EN | 1339 PM_CTRL_SERDES_PLL_L1_EN | 1340 PM_CTRL_SERDES_BUFS_RX_L1_EN | 1341 PM_CTRL_SA_DLY_EN | 1342 PM_CTRL_HOTRST); 1343 /* disable l0s if link down or l2cb */ 1344 if (link_speed == SPEED_0 || hw->nic_type == athr_l2c_b) 1345 pm_ctrl_data &= ~PM_CTRL_ASPM_L0S_EN; 1346 } else { /* l1c */ 1347 pm_ctrl_data = 1348 FIELD_SETX(pm_ctrl_data, PM_CTRL_L1_ENTRY_TIMER, 0); 1349 if (link_speed != SPEED_0) { 1350 pm_ctrl_data |= PM_CTRL_SERDES_L1_EN | 1351 PM_CTRL_SERDES_PLL_L1_EN | 1352 PM_CTRL_SERDES_BUFS_RX_L1_EN; 1353 pm_ctrl_data &= ~(PM_CTRL_SERDES_PD_EX_L1 | 1354 PM_CTRL_CLK_SWH_L1 | 1355 PM_CTRL_ASPM_L0S_EN | 1356 PM_CTRL_ASPM_L1_EN); 1357 } else { /* link down */ 1358 pm_ctrl_data |= PM_CTRL_CLK_SWH_L1; 1359 pm_ctrl_data &= ~(PM_CTRL_SERDES_L1_EN | 1360 PM_CTRL_SERDES_PLL_L1_EN | 1361 PM_CTRL_SERDES_BUFS_RX_L1_EN | 1362 PM_CTRL_ASPM_L0S_EN); 1363 } 1364 } 1365 AT_WRITE_REG(hw, REG_PM_CTRL, pm_ctrl_data); 1366 1367 return; 1368} 1369 1370/** 1371 * atl1c_configure - Configure Transmit&Receive Unit after Reset 1372 * @adapter: board private structure 1373 * 1374 * Configure the Tx /Rx unit of the MAC after a reset. 1375 */ 1376static int atl1c_configure_mac(struct atl1c_adapter *adapter) 1377{ 1378 struct atl1c_hw *hw = &adapter->hw; 1379 u32 master_ctrl_data = 0; 1380 u32 intr_modrt_data; 1381 u32 data; 1382 1383 AT_READ_REG(hw, REG_MASTER_CTRL, &master_ctrl_data); 1384 master_ctrl_data &= ~(MASTER_CTRL_TX_ITIMER_EN | 1385 MASTER_CTRL_RX_ITIMER_EN | 1386 MASTER_CTRL_INT_RDCLR); 1387 /* clear interrupt status */ 1388 AT_WRITE_REG(hw, REG_ISR, 0xFFFFFFFF); 1389 /* Clear any WOL status */ 1390 AT_WRITE_REG(hw, REG_WOL_CTRL, 0); 1391 /* set Interrupt Clear Timer 1392 * HW will enable self to assert interrupt event to system after 1393 * waiting x-time for software to notify it accept interrupt. 1394 */ 1395 1396 data = CLK_GATING_EN_ALL; 1397 if (hw->ctrl_flags & ATL1C_CLK_GATING_EN) { 1398 if (hw->nic_type == athr_l2c_b) 1399 data &= ~CLK_GATING_RXMAC_EN; 1400 } else 1401 data = 0; 1402 AT_WRITE_REG(hw, REG_CLK_GATING_CTRL, data); 1403 1404 AT_WRITE_REG(hw, REG_INT_RETRIG_TIMER, 1405 hw->ict & INT_RETRIG_TIMER_MASK); 1406 1407 atl1c_configure_des_ring(adapter); 1408 1409 if (hw->ctrl_flags & ATL1C_INTR_MODRT_ENABLE) { 1410 intr_modrt_data = (hw->tx_imt & IRQ_MODRT_TIMER_MASK) << 1411 IRQ_MODRT_TX_TIMER_SHIFT; 1412 intr_modrt_data |= (hw->rx_imt & IRQ_MODRT_TIMER_MASK) << 1413 IRQ_MODRT_RX_TIMER_SHIFT; 1414 AT_WRITE_REG(hw, REG_IRQ_MODRT_TIMER_INIT, intr_modrt_data); 1415 master_ctrl_data |= 1416 MASTER_CTRL_TX_ITIMER_EN | MASTER_CTRL_RX_ITIMER_EN; 1417 } 1418 1419 if (hw->ctrl_flags & ATL1C_INTR_CLEAR_ON_READ) 1420 master_ctrl_data |= MASTER_CTRL_INT_RDCLR; 1421 1422 master_ctrl_data |= MASTER_CTRL_SA_TIMER_EN; 1423 AT_WRITE_REG(hw, REG_MASTER_CTRL, master_ctrl_data); 1424 1425 AT_WRITE_REG(hw, REG_SMB_STAT_TIMER, 1426 hw->smb_timer & SMB_STAT_TIMER_MASK); 1427 1428 /* set MTU */ 1429 AT_WRITE_REG(hw, REG_MTU, hw->max_frame_size + ETH_HLEN + 1430 VLAN_HLEN + ETH_FCS_LEN); 1431 1432 atl1c_configure_tx(adapter); 1433 atl1c_configure_rx(adapter); 1434 atl1c_configure_dma(adapter); 1435 1436 return 0; 1437} 1438 1439static int atl1c_configure(struct atl1c_adapter *adapter) 1440{ 1441 struct net_device *netdev = adapter->netdev; 1442 int num; 1443 1444 atl1c_init_ring_ptrs(adapter); 1445 atl1c_set_multi(netdev); 1446 atl1c_restore_vlan(adapter); 1447 1448 num = atl1c_alloc_rx_buffer(adapter); 1449 if (unlikely(num == 0)) 1450 return -ENOMEM; 1451 1452 if (atl1c_configure_mac(adapter)) 1453 return -EIO; 1454 1455 return 0; 1456} 1457 1458static void atl1c_update_hw_stats(struct atl1c_adapter *adapter) 1459{ 1460 u16 hw_reg_addr = 0; 1461 unsigned long *stats_item = NULL; 1462 u32 data; 1463 1464 /* update rx status */ 1465 hw_reg_addr = REG_MAC_RX_STATUS_BIN; 1466 stats_item = &adapter->hw_stats.rx_ok; 1467 while (hw_reg_addr <= REG_MAC_RX_STATUS_END) { 1468 AT_READ_REG(&adapter->hw, hw_reg_addr, &data); 1469 *stats_item += data; 1470 stats_item++; 1471 hw_reg_addr += 4; 1472 } 1473/* update tx status */ 1474 hw_reg_addr = REG_MAC_TX_STATUS_BIN; 1475 stats_item = &adapter->hw_stats.tx_ok; 1476 while (hw_reg_addr <= REG_MAC_TX_STATUS_END) { 1477 AT_READ_REG(&adapter->hw, hw_reg_addr, &data); 1478 *stats_item += data; 1479 stats_item++; 1480 hw_reg_addr += 4; 1481 } 1482} 1483 1484/** 1485 * atl1c_get_stats - Get System Network Statistics 1486 * @netdev: network interface device structure 1487 * 1488 * Returns the address of the device statistics structure. 1489 * The statistics are actually updated from the timer callback. 1490 */ 1491static struct net_device_stats *atl1c_get_stats(struct net_device *netdev) 1492{ 1493 struct atl1c_adapter *adapter = netdev_priv(netdev); 1494 struct atl1c_hw_stats *hw_stats = &adapter->hw_stats; 1495 struct net_device_stats *net_stats = &netdev->stats; 1496 1497 atl1c_update_hw_stats(adapter); 1498 net_stats->rx_bytes = hw_stats->rx_byte_cnt; 1499 net_stats->tx_bytes = hw_stats->tx_byte_cnt; 1500 net_stats->multicast = hw_stats->rx_mcast; 1501 net_stats->collisions = hw_stats->tx_1_col + 1502 hw_stats->tx_2_col + 1503 hw_stats->tx_late_col + 1504 hw_stats->tx_abort_col; 1505 1506 net_stats->rx_errors = hw_stats->rx_frag + 1507 hw_stats->rx_fcs_err + 1508 hw_stats->rx_len_err + 1509 hw_stats->rx_sz_ov + 1510 hw_stats->rx_rrd_ov + 1511 hw_stats->rx_align_err + 1512 hw_stats->rx_rxf_ov; 1513 1514 net_stats->rx_fifo_errors = hw_stats->rx_rxf_ov; 1515 net_stats->rx_length_errors = hw_stats->rx_len_err; 1516 net_stats->rx_crc_errors = hw_stats->rx_fcs_err; 1517 net_stats->rx_frame_errors = hw_stats->rx_align_err; 1518 net_stats->rx_dropped = hw_stats->rx_rrd_ov; 1519 1520 net_stats->tx_errors = hw_stats->tx_late_col + 1521 hw_stats->tx_abort_col + 1522 hw_stats->tx_underrun + 1523 hw_stats->tx_trunc; 1524 1525 net_stats->tx_fifo_errors = hw_stats->tx_underrun; 1526 net_stats->tx_aborted_errors = hw_stats->tx_abort_col; 1527 net_stats->tx_window_errors = hw_stats->tx_late_col; 1528 1529 net_stats->rx_packets = hw_stats->rx_ok + net_stats->rx_errors; 1530 net_stats->tx_packets = hw_stats->tx_ok + net_stats->tx_errors; 1531 1532 return net_stats; 1533} 1534 1535static inline void atl1c_clear_phy_int(struct atl1c_adapter *adapter) 1536{ 1537 u16 phy_data; 1538 1539 spin_lock(&adapter->mdio_lock); 1540 atl1c_read_phy_reg(&adapter->hw, MII_ISR, &phy_data); 1541 spin_unlock(&adapter->mdio_lock); 1542} 1543 1544static bool atl1c_clean_tx_irq(struct atl1c_adapter *adapter, 1545 enum atl1c_trans_queue type) 1546{ 1547 struct atl1c_tpd_ring *tpd_ring = &adapter->tpd_ring[type]; 1548 struct atl1c_buffer *buffer_info; 1549 struct pci_dev *pdev = adapter->pdev; 1550 u16 next_to_clean = atomic_read(&tpd_ring->next_to_clean); 1551 u16 hw_next_to_clean; 1552 u16 reg; 1553 1554 reg = type == atl1c_trans_high ? REG_TPD_PRI1_CIDX : REG_TPD_PRI0_CIDX; 1555 1556 AT_READ_REGW(&adapter->hw, reg, &hw_next_to_clean); 1557 1558 while (next_to_clean != hw_next_to_clean) { 1559 buffer_info = &tpd_ring->buffer_info[next_to_clean]; 1560 atl1c_clean_buffer(pdev, buffer_info); 1561 if (++next_to_clean == tpd_ring->count) 1562 next_to_clean = 0; 1563 atomic_set(&tpd_ring->next_to_clean, next_to_clean); 1564 } 1565 1566 if (netif_queue_stopped(adapter->netdev) && 1567 netif_carrier_ok(adapter->netdev)) { 1568 netif_wake_queue(adapter->netdev); 1569 } 1570 1571 return true; 1572} 1573 1574/** 1575 * atl1c_intr - Interrupt Handler 1576 * @irq: interrupt number 1577 * @data: pointer to a network interface device structure 1578 */ 1579static irqreturn_t atl1c_intr(int irq, void *data) 1580{ 1581 struct net_device *netdev = data; 1582 struct atl1c_adapter *adapter = netdev_priv(netdev); 1583 struct pci_dev *pdev = adapter->pdev; 1584 struct atl1c_hw *hw = &adapter->hw; 1585 int max_ints = AT_MAX_INT_WORK; 1586 int handled = IRQ_NONE; 1587 u32 status; 1588 u32 reg_data; 1589 1590 do { 1591 AT_READ_REG(hw, REG_ISR, ®_data); 1592 status = reg_data & hw->intr_mask; 1593 1594 if (status == 0 || (status & ISR_DIS_INT) != 0) { 1595 if (max_ints != AT_MAX_INT_WORK) 1596 handled = IRQ_HANDLED; 1597 break; 1598 } 1599 /* link event */ 1600 if (status & ISR_GPHY) 1601 atl1c_clear_phy_int(adapter); 1602 /* Ack ISR */ 1603 AT_WRITE_REG(hw, REG_ISR, status | ISR_DIS_INT); 1604 if (status & ISR_RX_PKT) { 1605 if (likely(napi_schedule_prep(&adapter->napi))) { 1606 hw->intr_mask &= ~ISR_RX_PKT; 1607 AT_WRITE_REG(hw, REG_IMR, hw->intr_mask); 1608 __napi_schedule(&adapter->napi); 1609 } 1610 } 1611 if (status & ISR_TX_PKT) 1612 atl1c_clean_tx_irq(adapter, atl1c_trans_normal); 1613 1614 handled = IRQ_HANDLED; 1615 /* check if PCIE PHY Link down */ 1616 if (status & ISR_ERROR) { 1617 if (netif_msg_hw(adapter)) 1618 dev_err(&pdev->dev, 1619 "atl1c hardware error (status = 0x%x)\n", 1620 status & ISR_ERROR); 1621 /* reset MAC */ 1622 set_bit(ATL1C_WORK_EVENT_RESET, &adapter->work_event); 1623 schedule_work(&adapter->common_task); 1624 return IRQ_HANDLED; 1625 } 1626 1627 if (status & ISR_OVER) 1628 if (netif_msg_intr(adapter)) 1629 dev_warn(&pdev->dev, 1630 "TX/RX overflow (status = 0x%x)\n", 1631 status & ISR_OVER); 1632 1633 /* link event */ 1634 if (status & (ISR_GPHY | ISR_MANUAL)) { 1635 netdev->stats.tx_carrier_errors++; 1636 atl1c_link_chg_event(adapter); 1637 break; 1638 } 1639 1640 } while (--max_ints > 0); 1641 /* re-enable Interrupt*/ 1642 AT_WRITE_REG(&adapter->hw, REG_ISR, 0); 1643 return handled; 1644} 1645 1646static inline void atl1c_rx_checksum(struct atl1c_adapter *adapter, 1647 struct sk_buff *skb, struct atl1c_recv_ret_status *prrs) 1648{ 1649 /* 1650 * The pid field in RRS in not correct sometimes, so we 1651 * cannot figure out if the packet is fragmented or not, 1652 * so we tell the KERNEL CHECKSUM_NONE 1653 */ 1654 skb_checksum_none_assert(skb); 1655} 1656 1657static struct sk_buff *atl1c_alloc_skb(struct atl1c_adapter *adapter) 1658{ 1659 struct sk_buff *skb; 1660 struct page *page; 1661 1662 if (adapter->rx_frag_size > PAGE_SIZE) 1663 return netdev_alloc_skb(adapter->netdev, 1664 adapter->rx_buffer_len); 1665 1666 page = adapter->rx_page; 1667 if (!page) { 1668 adapter->rx_page = page = alloc_page(GFP_ATOMIC); 1669 if (unlikely(!page)) 1670 return NULL; 1671 adapter->rx_page_offset = 0; 1672 } 1673 1674 skb = build_skb(page_address(page) + adapter->rx_page_offset, 1675 adapter->rx_frag_size); 1676 if (likely(skb)) { 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 1686static 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 1757static 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 1770static 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 1789static 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 } 1819rrs_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 */ 1870static 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) { 1883quit_polling: 1884 napi_complete(napi); 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 */ 1898static 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 1908static 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 */ 1927static 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 1942static struct atl1c_buffer * 1943atl1c_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*/ 1952static 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 1969static 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 2046check_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 2069static 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 2091static 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 2184err_dma: 2185 buffer_info->dma = 0; 2186 buffer_info->length = 0; 2187 return -1; 2188} 2189 2190static 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 2200static 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 unsigned long flags; 2205 u16 tpd_req = 1; 2206 struct atl1c_tpd_desc *tpd; 2207 enum atl1c_trans_queue type = atl1c_trans_normal; 2208 2209 if (test_bit(__AT_DOWN, &adapter->flags)) { 2210 dev_kfree_skb_any(skb); 2211 return NETDEV_TX_OK; 2212 } 2213 2214 tpd_req = atl1c_cal_tpd_req(skb); 2215 if (!spin_trylock_irqsave(&adapter->tx_lock, flags)) { 2216 if (netif_msg_pktdata(adapter)) 2217 dev_info(&adapter->pdev->dev, "tx locked\n"); 2218 return NETDEV_TX_LOCKED; 2219 } 2220 2221 if (atl1c_tpd_avail(adapter, type) < tpd_req) { 2222 /* no enough descriptor, just stop queue */ 2223 netif_stop_queue(netdev); 2224 spin_unlock_irqrestore(&adapter->tx_lock, flags); 2225 return NETDEV_TX_BUSY; 2226 } 2227 2228 tpd = atl1c_get_tpd(adapter, type); 2229 2230 /* do TSO and check sum */ 2231 if (atl1c_tso_csum(adapter, skb, &tpd, type) != 0) { 2232 spin_unlock_irqrestore(&adapter->tx_lock, flags); 2233 dev_kfree_skb_any(skb); 2234 return NETDEV_TX_OK; 2235 } 2236 2237 if (unlikely(skb_vlan_tag_present(skb))) { 2238 u16 vlan = skb_vlan_tag_get(skb); 2239 __le16 tag; 2240 2241 vlan = cpu_to_le16(vlan); 2242 AT_VLAN_TO_TAG(vlan, tag); 2243 tpd->word1 |= 1 << TPD_INS_VTAG_SHIFT; 2244 tpd->vlan_tag = tag; 2245 } 2246 2247 if (skb_network_offset(skb) != ETH_HLEN) 2248 tpd->word1 |= 1 << TPD_ETH_TYPE_SHIFT; /* Ethernet frame */ 2249 2250 if (atl1c_tx_map(adapter, skb, tpd, type) < 0) { 2251 netif_info(adapter, tx_done, adapter->netdev, 2252 "tx-skb droppted due to dma error\n"); 2253 /* roll back tpd/buffer */ 2254 atl1c_tx_rollback(adapter, tpd, type); 2255 spin_unlock_irqrestore(&adapter->tx_lock, flags); 2256 dev_kfree_skb_any(skb); 2257 } else { 2258 atl1c_tx_queue(adapter, skb, tpd, type); 2259 spin_unlock_irqrestore(&adapter->tx_lock, flags); 2260 } 2261 2262 return NETDEV_TX_OK; 2263} 2264 2265static void atl1c_free_irq(struct atl1c_adapter *adapter) 2266{ 2267 struct net_device *netdev = adapter->netdev; 2268 2269 free_irq(adapter->pdev->irq, netdev); 2270 2271 if (adapter->have_msi) 2272 pci_disable_msi(adapter->pdev); 2273} 2274 2275static int atl1c_request_irq(struct atl1c_adapter *adapter) 2276{ 2277 struct pci_dev *pdev = adapter->pdev; 2278 struct net_device *netdev = adapter->netdev; 2279 int flags = 0; 2280 int err = 0; 2281 2282 adapter->have_msi = true; 2283 err = pci_enable_msi(adapter->pdev); 2284 if (err) { 2285 if (netif_msg_ifup(adapter)) 2286 dev_err(&pdev->dev, 2287 "Unable to allocate MSI interrupt Error: %d\n", 2288 err); 2289 adapter->have_msi = false; 2290 } 2291 2292 if (!adapter->have_msi) 2293 flags |= IRQF_SHARED; 2294 err = request_irq(adapter->pdev->irq, atl1c_intr, flags, 2295 netdev->name, netdev); 2296 if (err) { 2297 if (netif_msg_ifup(adapter)) 2298 dev_err(&pdev->dev, 2299 "Unable to allocate interrupt Error: %d\n", 2300 err); 2301 if (adapter->have_msi) 2302 pci_disable_msi(adapter->pdev); 2303 return err; 2304 } 2305 if (netif_msg_ifup(adapter)) 2306 dev_dbg(&pdev->dev, "atl1c_request_irq OK\n"); 2307 return err; 2308} 2309 2310 2311static void atl1c_reset_dma_ring(struct atl1c_adapter *adapter) 2312{ 2313 /* release tx-pending skbs and reset tx/rx ring index */ 2314 atl1c_clean_tx_ring(adapter, atl1c_trans_normal); 2315 atl1c_clean_tx_ring(adapter, atl1c_trans_high); 2316 atl1c_clean_rx_ring(adapter); 2317} 2318 2319static int atl1c_up(struct atl1c_adapter *adapter) 2320{ 2321 struct net_device *netdev = adapter->netdev; 2322 int err; 2323 2324 netif_carrier_off(netdev); 2325 2326 err = atl1c_configure(adapter); 2327 if (unlikely(err)) 2328 goto err_up; 2329 2330 err = atl1c_request_irq(adapter); 2331 if (unlikely(err)) 2332 goto err_up; 2333 2334 atl1c_check_link_status(adapter); 2335 clear_bit(__AT_DOWN, &adapter->flags); 2336 napi_enable(&adapter->napi); 2337 atl1c_irq_enable(adapter); 2338 netif_start_queue(netdev); 2339 return err; 2340 2341err_up: 2342 atl1c_clean_rx_ring(adapter); 2343 return err; 2344} 2345 2346static void atl1c_down(struct atl1c_adapter *adapter) 2347{ 2348 struct net_device *netdev = adapter->netdev; 2349 2350 atl1c_del_timer(adapter); 2351 adapter->work_event = 0; /* clear all event */ 2352 /* signal that we're down so the interrupt handler does not 2353 * reschedule our watchdog timer */ 2354 set_bit(__AT_DOWN, &adapter->flags); 2355 netif_carrier_off(netdev); 2356 napi_disable(&adapter->napi); 2357 atl1c_irq_disable(adapter); 2358 atl1c_free_irq(adapter); 2359 /* disable ASPM if device inactive */ 2360 atl1c_disable_l0s_l1(&adapter->hw); 2361 /* reset MAC to disable all RX/TX */ 2362 atl1c_reset_mac(&adapter->hw); 2363 msleep(1); 2364 2365 adapter->link_speed = SPEED_0; 2366 adapter->link_duplex = -1; 2367 atl1c_reset_dma_ring(adapter); 2368} 2369 2370/** 2371 * atl1c_open - Called when a network interface is made active 2372 * @netdev: network interface device structure 2373 * 2374 * Returns 0 on success, negative value on failure 2375 * 2376 * The open entry point is called when a network interface is made 2377 * active by the system (IFF_UP). At this point all resources needed 2378 * for transmit and receive operations are allocated, the interrupt 2379 * handler is registered with the OS, the watchdog timer is started, 2380 * and the stack is notified that the interface is ready. 2381 */ 2382static int atl1c_open(struct net_device *netdev) 2383{ 2384 struct atl1c_adapter *adapter = netdev_priv(netdev); 2385 int err; 2386 2387 /* disallow open during test */ 2388 if (test_bit(__AT_TESTING, &adapter->flags)) 2389 return -EBUSY; 2390 2391 /* allocate rx/tx dma buffer & descriptors */ 2392 err = atl1c_setup_ring_resources(adapter); 2393 if (unlikely(err)) 2394 return err; 2395 2396 err = atl1c_up(adapter); 2397 if (unlikely(err)) 2398 goto err_up; 2399 2400 return 0; 2401 2402err_up: 2403 atl1c_free_irq(adapter); 2404 atl1c_free_ring_resources(adapter); 2405 atl1c_reset_mac(&adapter->hw); 2406 return err; 2407} 2408 2409/** 2410 * atl1c_close - Disables a network interface 2411 * @netdev: network interface device structure 2412 * 2413 * Returns 0, this is not allowed to fail 2414 * 2415 * The close entry point is called when an interface is de-activated 2416 * by the OS. The hardware is still under the drivers control, but 2417 * needs to be disabled. A global MAC reset is issued to stop the 2418 * hardware, and all transmit and receive resources are freed. 2419 */ 2420static int atl1c_close(struct net_device *netdev) 2421{ 2422 struct atl1c_adapter *adapter = netdev_priv(netdev); 2423 2424 WARN_ON(test_bit(__AT_RESETTING, &adapter->flags)); 2425 set_bit(__AT_DOWN, &adapter->flags); 2426 cancel_work_sync(&adapter->common_task); 2427 atl1c_down(adapter); 2428 atl1c_free_ring_resources(adapter); 2429 return 0; 2430} 2431 2432static int atl1c_suspend(struct device *dev) 2433{ 2434 struct pci_dev *pdev = to_pci_dev(dev); 2435 struct net_device *netdev = pci_get_drvdata(pdev); 2436 struct atl1c_adapter *adapter = netdev_priv(netdev); 2437 struct atl1c_hw *hw = &adapter->hw; 2438 u32 wufc = adapter->wol; 2439 2440 atl1c_disable_l0s_l1(hw); 2441 if (netif_running(netdev)) { 2442 WARN_ON(test_bit(__AT_RESETTING, &adapter->flags)); 2443 atl1c_down(adapter); 2444 } 2445 netif_device_detach(netdev); 2446 2447 if (wufc) 2448 if (atl1c_phy_to_ps_link(hw) != 0) 2449 dev_dbg(&pdev->dev, "phy power saving failed"); 2450 2451 atl1c_power_saving(hw, wufc); 2452 2453 return 0; 2454} 2455 2456#ifdef CONFIG_PM_SLEEP 2457static int atl1c_resume(struct device *dev) 2458{ 2459 struct pci_dev *pdev = to_pci_dev(dev); 2460 struct net_device *netdev = pci_get_drvdata(pdev); 2461 struct atl1c_adapter *adapter = netdev_priv(netdev); 2462 2463 AT_WRITE_REG(&adapter->hw, REG_WOL_CTRL, 0); 2464 atl1c_reset_pcie(&adapter->hw, ATL1C_PCIE_L0S_L1_DISABLE); 2465 2466 atl1c_phy_reset(&adapter->hw); 2467 atl1c_reset_mac(&adapter->hw); 2468 atl1c_phy_init(&adapter->hw); 2469 2470#if 0 2471 AT_READ_REG(&adapter->hw, REG_PM_CTRLSTAT, &pm_data); 2472 pm_data &= ~PM_CTRLSTAT_PME_EN; 2473 AT_WRITE_REG(&adapter->hw, REG_PM_CTRLSTAT, pm_data); 2474#endif 2475 2476 netif_device_attach(netdev); 2477 if (netif_running(netdev)) 2478 atl1c_up(adapter); 2479 2480 return 0; 2481} 2482#endif 2483 2484static void atl1c_shutdown(struct pci_dev *pdev) 2485{ 2486 struct net_device *netdev = pci_get_drvdata(pdev); 2487 struct atl1c_adapter *adapter = netdev_priv(netdev); 2488 2489 atl1c_suspend(&pdev->dev); 2490 pci_wake_from_d3(pdev, adapter->wol); 2491 pci_set_power_state(pdev, PCI_D3hot); 2492} 2493 2494static const struct net_device_ops atl1c_netdev_ops = { 2495 .ndo_open = atl1c_open, 2496 .ndo_stop = atl1c_close, 2497 .ndo_validate_addr = eth_validate_addr, 2498 .ndo_start_xmit = atl1c_xmit_frame, 2499 .ndo_set_mac_address = atl1c_set_mac_addr, 2500 .ndo_set_rx_mode = atl1c_set_multi, 2501 .ndo_change_mtu = atl1c_change_mtu, 2502 .ndo_fix_features = atl1c_fix_features, 2503 .ndo_set_features = atl1c_set_features, 2504 .ndo_do_ioctl = atl1c_ioctl, 2505 .ndo_tx_timeout = atl1c_tx_timeout, 2506 .ndo_get_stats = atl1c_get_stats, 2507#ifdef CONFIG_NET_POLL_CONTROLLER 2508 .ndo_poll_controller = atl1c_netpoll, 2509#endif 2510}; 2511 2512static int atl1c_init_netdev(struct net_device *netdev, struct pci_dev *pdev) 2513{ 2514 SET_NETDEV_DEV(netdev, &pdev->dev); 2515 pci_set_drvdata(pdev, netdev); 2516 2517 netdev->netdev_ops = &atl1c_netdev_ops; 2518 netdev->watchdog_timeo = AT_TX_WATCHDOG; 2519 atl1c_set_ethtool_ops(netdev); 2520 2521 /* TODO: add when ready */ 2522 netdev->hw_features = NETIF_F_SG | 2523 NETIF_F_HW_CSUM | 2524 NETIF_F_HW_VLAN_CTAG_RX | 2525 NETIF_F_TSO | 2526 NETIF_F_TSO6; 2527 netdev->features = netdev->hw_features | 2528 NETIF_F_HW_VLAN_CTAG_TX; 2529 return 0; 2530} 2531 2532/** 2533 * atl1c_probe - Device Initialization Routine 2534 * @pdev: PCI device information struct 2535 * @ent: entry in atl1c_pci_tbl 2536 * 2537 * Returns 0 on success, negative on failure 2538 * 2539 * atl1c_probe initializes an adapter identified by a pci_dev structure. 2540 * The OS initialization, configuring of the adapter private structure, 2541 * and a hardware reset occur. 2542 */ 2543static int atl1c_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 2544{ 2545 struct net_device *netdev; 2546 struct atl1c_adapter *adapter; 2547 static int cards_found; 2548 2549 int err = 0; 2550 2551 /* enable device (incl. PCI PM wakeup and hotplug setup) */ 2552 err = pci_enable_device_mem(pdev); 2553 if (err) { 2554 dev_err(&pdev->dev, "cannot enable PCI device\n"); 2555 return err; 2556 } 2557 2558 /* 2559 * The atl1c chip can DMA to 64-bit addresses, but it uses a single 2560 * shared register for the high 32 bits, so only a single, aligned, 2561 * 4 GB physical address range can be used at a time. 2562 * 2563 * Supporting 64-bit DMA on this hardware is more trouble than it's 2564 * worth. It is far easier to limit to 32-bit DMA than update 2565 * various kernel subsystems to support the mechanics required by a 2566 * fixed-high-32-bit system. 2567 */ 2568 if ((pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) || 2569 (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)) { 2570 dev_err(&pdev->dev, "No usable DMA configuration,aborting\n"); 2571 goto err_dma; 2572 } 2573 2574 err = pci_request_regions(pdev, atl1c_driver_name); 2575 if (err) { 2576 dev_err(&pdev->dev, "cannot obtain PCI resources\n"); 2577 goto err_pci_reg; 2578 } 2579 2580 pci_set_master(pdev); 2581 2582 netdev = alloc_etherdev(sizeof(struct atl1c_adapter)); 2583 if (netdev == NULL) { 2584 err = -ENOMEM; 2585 goto err_alloc_etherdev; 2586 } 2587 2588 err = atl1c_init_netdev(netdev, pdev); 2589 if (err) { 2590 dev_err(&pdev->dev, "init netdevice failed\n"); 2591 goto err_init_netdev; 2592 } 2593 adapter = netdev_priv(netdev); 2594 adapter->bd_number = cards_found; 2595 adapter->netdev = netdev; 2596 adapter->pdev = pdev; 2597 adapter->hw.adapter = adapter; 2598 adapter->msg_enable = netif_msg_init(-1, atl1c_default_msg); 2599 adapter->hw.hw_addr = ioremap(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0)); 2600 if (!adapter->hw.hw_addr) { 2601 err = -EIO; 2602 dev_err(&pdev->dev, "cannot map device registers\n"); 2603 goto err_ioremap; 2604 } 2605 2606 /* init mii data */ 2607 adapter->mii.dev = netdev; 2608 adapter->mii.mdio_read = atl1c_mdio_read; 2609 adapter->mii.mdio_write = atl1c_mdio_write; 2610 adapter->mii.phy_id_mask = 0x1f; 2611 adapter->mii.reg_num_mask = MDIO_CTRL_REG_MASK; 2612 netif_napi_add(netdev, &adapter->napi, atl1c_clean, 64); 2613 setup_timer(&adapter->phy_config_timer, atl1c_phy_config, 2614 (unsigned long)adapter); 2615 /* setup the private structure */ 2616 err = atl1c_sw_init(adapter); 2617 if (err) { 2618 dev_err(&pdev->dev, "net device private data init failed\n"); 2619 goto err_sw_init; 2620 } 2621 atl1c_reset_pcie(&adapter->hw, ATL1C_PCIE_L0S_L1_DISABLE); 2622 2623 /* Init GPHY as early as possible due to power saving issue */ 2624 atl1c_phy_reset(&adapter->hw); 2625 2626 err = atl1c_reset_mac(&adapter->hw); 2627 if (err) { 2628 err = -EIO; 2629 goto err_reset; 2630 } 2631 2632 /* reset the controller to 2633 * put the device in a known good starting state */ 2634 err = atl1c_phy_init(&adapter->hw); 2635 if (err) { 2636 err = -EIO; 2637 goto err_reset; 2638 } 2639 if (atl1c_read_mac_addr(&adapter->hw)) { 2640 /* got a random MAC address, set NET_ADDR_RANDOM to netdev */ 2641 netdev->addr_assign_type = NET_ADDR_RANDOM; 2642 } 2643 memcpy(netdev->dev_addr, adapter->hw.mac_addr, netdev->addr_len); 2644 if (netif_msg_probe(adapter)) 2645 dev_dbg(&pdev->dev, "mac address : %pM\n", 2646 adapter->hw.mac_addr); 2647 2648 atl1c_hw_set_mac_addr(&adapter->hw, adapter->hw.mac_addr); 2649 INIT_WORK(&adapter->common_task, atl1c_common_task); 2650 adapter->work_event = 0; 2651 err = register_netdev(netdev); 2652 if (err) { 2653 dev_err(&pdev->dev, "register netdevice failed\n"); 2654 goto err_register; 2655 } 2656 2657 if (netif_msg_probe(adapter)) 2658 dev_info(&pdev->dev, "version %s\n", ATL1C_DRV_VERSION); 2659 cards_found++; 2660 return 0; 2661 2662err_reset: 2663err_register: 2664err_sw_init: 2665 iounmap(adapter->hw.hw_addr); 2666err_init_netdev: 2667err_ioremap: 2668 free_netdev(netdev); 2669err_alloc_etherdev: 2670 pci_release_regions(pdev); 2671err_pci_reg: 2672err_dma: 2673 pci_disable_device(pdev); 2674 return err; 2675} 2676 2677/** 2678 * atl1c_remove - Device Removal Routine 2679 * @pdev: PCI device information struct 2680 * 2681 * atl1c_remove is called by the PCI subsystem to alert the driver 2682 * that it should release a PCI device. The could be caused by a 2683 * Hot-Plug event, or because the driver is going to be removed from 2684 * memory. 2685 */ 2686static void atl1c_remove(struct pci_dev *pdev) 2687{ 2688 struct net_device *netdev = pci_get_drvdata(pdev); 2689 struct atl1c_adapter *adapter = netdev_priv(netdev); 2690 2691 unregister_netdev(netdev); 2692 /* restore permanent address */ 2693 atl1c_hw_set_mac_addr(&adapter->hw, adapter->hw.perm_mac_addr); 2694 atl1c_phy_disable(&adapter->hw); 2695 2696 iounmap(adapter->hw.hw_addr); 2697 2698 pci_release_regions(pdev); 2699 pci_disable_device(pdev); 2700 free_netdev(netdev); 2701} 2702 2703/** 2704 * atl1c_io_error_detected - called when PCI error is detected 2705 * @pdev: Pointer to PCI device 2706 * @state: The current pci connection state 2707 * 2708 * This function is called after a PCI bus error affecting 2709 * this device has been detected. 2710 */ 2711static pci_ers_result_t atl1c_io_error_detected(struct pci_dev *pdev, 2712 pci_channel_state_t state) 2713{ 2714 struct net_device *netdev = pci_get_drvdata(pdev); 2715 struct atl1c_adapter *adapter = netdev_priv(netdev); 2716 2717 netif_device_detach(netdev); 2718 2719 if (state == pci_channel_io_perm_failure) 2720 return PCI_ERS_RESULT_DISCONNECT; 2721 2722 if (netif_running(netdev)) 2723 atl1c_down(adapter); 2724 2725 pci_disable_device(pdev); 2726 2727 /* Request a slot slot reset. */ 2728 return PCI_ERS_RESULT_NEED_RESET; 2729} 2730 2731/** 2732 * atl1c_io_slot_reset - called after the pci bus has been reset. 2733 * @pdev: Pointer to PCI device 2734 * 2735 * Restart the card from scratch, as if from a cold-boot. Implementation 2736 * resembles the first-half of the e1000_resume routine. 2737 */ 2738static pci_ers_result_t atl1c_io_slot_reset(struct pci_dev *pdev) 2739{ 2740 struct net_device *netdev = pci_get_drvdata(pdev); 2741 struct atl1c_adapter *adapter = netdev_priv(netdev); 2742 2743 if (pci_enable_device(pdev)) { 2744 if (netif_msg_hw(adapter)) 2745 dev_err(&pdev->dev, 2746 "Cannot re-enable PCI device after reset\n"); 2747 return PCI_ERS_RESULT_DISCONNECT; 2748 } 2749 pci_set_master(pdev); 2750 2751 pci_enable_wake(pdev, PCI_D3hot, 0); 2752 pci_enable_wake(pdev, PCI_D3cold, 0); 2753 2754 atl1c_reset_mac(&adapter->hw); 2755 2756 return PCI_ERS_RESULT_RECOVERED; 2757} 2758 2759/** 2760 * atl1c_io_resume - called when traffic can start flowing again. 2761 * @pdev: Pointer to PCI device 2762 * 2763 * This callback is called when the error recovery driver tells us that 2764 * its OK to resume normal operation. Implementation resembles the 2765 * second-half of the atl1c_resume routine. 2766 */ 2767static void atl1c_io_resume(struct pci_dev *pdev) 2768{ 2769 struct net_device *netdev = pci_get_drvdata(pdev); 2770 struct atl1c_adapter *adapter = netdev_priv(netdev); 2771 2772 if (netif_running(netdev)) { 2773 if (atl1c_up(adapter)) { 2774 if (netif_msg_hw(adapter)) 2775 dev_err(&pdev->dev, 2776 "Cannot bring device back up after reset\n"); 2777 return; 2778 } 2779 } 2780 2781 netif_device_attach(netdev); 2782} 2783 2784static const struct pci_error_handlers atl1c_err_handler = { 2785 .error_detected = atl1c_io_error_detected, 2786 .slot_reset = atl1c_io_slot_reset, 2787 .resume = atl1c_io_resume, 2788}; 2789 2790static SIMPLE_DEV_PM_OPS(atl1c_pm_ops, atl1c_suspend, atl1c_resume); 2791 2792static struct pci_driver atl1c_driver = { 2793 .name = atl1c_driver_name, 2794 .id_table = atl1c_pci_tbl, 2795 .probe = atl1c_probe, 2796 .remove = atl1c_remove, 2797 .shutdown = atl1c_shutdown, 2798 .err_handler = &atl1c_err_handler, 2799 .driver.pm = &atl1c_pm_ops, 2800}; 2801 2802module_pci_driver(atl1c_driver); 2803