Jie Yang | 43250dd | 2009-02-18 17:24:15 -0800 | [diff] [blame] | 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 "1.0.0.1-NAPI" |
| 25 | char atl1c_driver_name[] = "atl1c"; |
| 26 | char atl1c_driver_version[] = ATL1C_DRV_VERSION; |
| 27 | #define PCI_DEVICE_ID_ATTANSIC_L2C 0x1062 |
| 28 | #define PCI_DEVICE_ID_ATTANSIC_L1C 0x1063 |
| 29 | /* |
| 30 | * atl1c_pci_tbl - PCI Device ID Table |
| 31 | * |
| 32 | * Wildcard entries (PCI_ANY_ID) should come last |
| 33 | * Last entry must be all 0s |
| 34 | * |
| 35 | * { Vendor ID, Device ID, SubVendor ID, SubDevice ID, |
| 36 | * Class, Class Mask, private data (not used) } |
| 37 | */ |
| 38 | static struct pci_device_id atl1c_pci_tbl[] = { |
| 39 | {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, PCI_DEVICE_ID_ATTANSIC_L1C)}, |
| 40 | {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, PCI_DEVICE_ID_ATTANSIC_L2C)}, |
| 41 | /* required last entry */ |
| 42 | { 0 } |
| 43 | }; |
| 44 | MODULE_DEVICE_TABLE(pci, atl1c_pci_tbl); |
| 45 | |
| 46 | MODULE_AUTHOR("Jie Yang <jie.yang@atheros.com>"); |
| 47 | MODULE_DESCRIPTION("Atheros 1000M Ethernet Network Driver"); |
| 48 | MODULE_LICENSE("GPL"); |
| 49 | MODULE_VERSION(ATL1C_DRV_VERSION); |
| 50 | |
| 51 | static int atl1c_stop_mac(struct atl1c_hw *hw); |
| 52 | static void atl1c_enable_rx_ctrl(struct atl1c_hw *hw); |
| 53 | static void atl1c_enable_tx_ctrl(struct atl1c_hw *hw); |
| 54 | static void atl1c_disable_l0s_l1(struct atl1c_hw *hw); |
| 55 | static void atl1c_set_aspm(struct atl1c_hw *hw, bool linkup); |
| 56 | static void atl1c_setup_mac_ctrl(struct atl1c_adapter *adapter); |
| 57 | static void atl1c_clean_rx_irq(struct atl1c_adapter *adapter, u8 que, |
| 58 | int *work_done, int work_to_do); |
| 59 | |
| 60 | static const u16 atl1c_pay_load_size[] = { |
| 61 | 128, 256, 512, 1024, 2048, 4096, |
| 62 | }; |
| 63 | |
| 64 | static const u16 atl1c_rfd_prod_idx_regs[AT_MAX_RECEIVE_QUEUE] = |
| 65 | { |
| 66 | REG_MB_RFD0_PROD_IDX, |
| 67 | REG_MB_RFD1_PROD_IDX, |
| 68 | REG_MB_RFD2_PROD_IDX, |
| 69 | REG_MB_RFD3_PROD_IDX |
| 70 | }; |
| 71 | |
| 72 | static const u16 atl1c_rfd_addr_lo_regs[AT_MAX_RECEIVE_QUEUE] = |
| 73 | { |
| 74 | REG_RFD0_HEAD_ADDR_LO, |
| 75 | REG_RFD1_HEAD_ADDR_LO, |
| 76 | REG_RFD2_HEAD_ADDR_LO, |
| 77 | REG_RFD3_HEAD_ADDR_LO |
| 78 | }; |
| 79 | |
| 80 | static const u16 atl1c_rrd_addr_lo_regs[AT_MAX_RECEIVE_QUEUE] = |
| 81 | { |
| 82 | REG_RRD0_HEAD_ADDR_LO, |
| 83 | REG_RRD1_HEAD_ADDR_LO, |
| 84 | REG_RRD2_HEAD_ADDR_LO, |
| 85 | REG_RRD3_HEAD_ADDR_LO |
| 86 | }; |
| 87 | |
| 88 | static const u32 atl1c_default_msg = NETIF_MSG_DRV | NETIF_MSG_PROBE | |
| 89 | NETIF_MSG_LINK | NETIF_MSG_TIMER | NETIF_MSG_IFDOWN | NETIF_MSG_IFUP; |
| 90 | |
| 91 | /* |
| 92 | * atl1c_init_pcie - init PCIE module |
| 93 | */ |
| 94 | static void atl1c_reset_pcie(struct atl1c_hw *hw, u32 flag) |
| 95 | { |
| 96 | u32 data; |
| 97 | u32 pci_cmd; |
| 98 | struct pci_dev *pdev = hw->adapter->pdev; |
| 99 | |
| 100 | AT_READ_REG(hw, PCI_COMMAND, &pci_cmd); |
| 101 | pci_cmd &= ~PCI_COMMAND_INTX_DISABLE; |
| 102 | pci_cmd |= (PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER | |
| 103 | PCI_COMMAND_IO); |
| 104 | AT_WRITE_REG(hw, PCI_COMMAND, pci_cmd); |
| 105 | |
| 106 | /* |
| 107 | * Clear any PowerSaveing Settings |
| 108 | */ |
| 109 | pci_enable_wake(pdev, PCI_D3hot, 0); |
| 110 | pci_enable_wake(pdev, PCI_D3cold, 0); |
| 111 | |
| 112 | /* |
| 113 | * Mask some pcie error bits |
| 114 | */ |
| 115 | AT_READ_REG(hw, REG_PCIE_UC_SEVERITY, &data); |
| 116 | data &= ~PCIE_UC_SERVRITY_DLP; |
| 117 | data &= ~PCIE_UC_SERVRITY_FCP; |
| 118 | AT_WRITE_REG(hw, REG_PCIE_UC_SEVERITY, data); |
| 119 | |
| 120 | if (flag & ATL1C_PCIE_L0S_L1_DISABLE) |
| 121 | atl1c_disable_l0s_l1(hw); |
| 122 | if (flag & ATL1C_PCIE_PHY_RESET) |
| 123 | AT_WRITE_REG(hw, REG_GPHY_CTRL, GPHY_CTRL_DEFAULT); |
| 124 | else |
| 125 | AT_WRITE_REG(hw, REG_GPHY_CTRL, |
| 126 | GPHY_CTRL_DEFAULT | GPHY_CTRL_EXT_RESET); |
| 127 | |
| 128 | msleep(1); |
| 129 | } |
| 130 | |
| 131 | /* |
| 132 | * atl1c_irq_enable - Enable default interrupt generation settings |
| 133 | * @adapter: board private structure |
| 134 | */ |
| 135 | static inline void atl1c_irq_enable(struct atl1c_adapter *adapter) |
| 136 | { |
| 137 | if (likely(atomic_dec_and_test(&adapter->irq_sem))) { |
| 138 | AT_WRITE_REG(&adapter->hw, REG_ISR, 0x7FFFFFFF); |
| 139 | AT_WRITE_REG(&adapter->hw, REG_IMR, adapter->hw.intr_mask); |
| 140 | AT_WRITE_FLUSH(&adapter->hw); |
| 141 | } |
| 142 | } |
| 143 | |
| 144 | /* |
| 145 | * atl1c_irq_disable - Mask off interrupt generation on the NIC |
| 146 | * @adapter: board private structure |
| 147 | */ |
| 148 | static inline void atl1c_irq_disable(struct atl1c_adapter *adapter) |
| 149 | { |
| 150 | atomic_inc(&adapter->irq_sem); |
| 151 | AT_WRITE_REG(&adapter->hw, REG_IMR, 0); |
| 152 | AT_WRITE_FLUSH(&adapter->hw); |
| 153 | synchronize_irq(adapter->pdev->irq); |
| 154 | } |
| 155 | |
| 156 | /* |
| 157 | * atl1c_irq_reset - reset interrupt confiure on the NIC |
| 158 | * @adapter: board private structure |
| 159 | */ |
| 160 | static inline void atl1c_irq_reset(struct atl1c_adapter *adapter) |
| 161 | { |
| 162 | atomic_set(&adapter->irq_sem, 1); |
| 163 | atl1c_irq_enable(adapter); |
| 164 | } |
| 165 | |
| 166 | /* |
Joe Perches | c930a66 | 2009-05-31 20:44:54 +0000 | [diff] [blame] | 167 | * atl1c_wait_until_idle - wait up to AT_HW_MAX_IDLE_DELAY reads |
| 168 | * of the idle status register until the device is actually idle |
| 169 | */ |
| 170 | static u32 atl1c_wait_until_idle(struct atl1c_hw *hw) |
| 171 | { |
| 172 | int timeout; |
| 173 | u32 data; |
| 174 | |
| 175 | for (timeout = 0; timeout < AT_HW_MAX_IDLE_DELAY; timeout++) { |
| 176 | AT_READ_REG(hw, REG_IDLE_STATUS, &data); |
| 177 | if ((data & IDLE_STATUS_MASK) == 0) |
| 178 | return 0; |
| 179 | msleep(1); |
| 180 | } |
| 181 | return data; |
| 182 | } |
| 183 | |
| 184 | /* |
Jie Yang | 43250dd | 2009-02-18 17:24:15 -0800 | [diff] [blame] | 185 | * atl1c_phy_config - Timer Call-back |
| 186 | * @data: pointer to netdev cast into an unsigned long |
| 187 | */ |
| 188 | static void atl1c_phy_config(unsigned long data) |
| 189 | { |
| 190 | struct atl1c_adapter *adapter = (struct atl1c_adapter *) data; |
| 191 | struct atl1c_hw *hw = &adapter->hw; |
| 192 | unsigned long flags; |
| 193 | |
| 194 | spin_lock_irqsave(&adapter->mdio_lock, flags); |
| 195 | atl1c_restart_autoneg(hw); |
| 196 | spin_unlock_irqrestore(&adapter->mdio_lock, flags); |
| 197 | } |
| 198 | |
| 199 | void atl1c_reinit_locked(struct atl1c_adapter *adapter) |
| 200 | { |
| 201 | |
| 202 | WARN_ON(in_interrupt()); |
| 203 | atl1c_down(adapter); |
| 204 | atl1c_up(adapter); |
| 205 | clear_bit(__AT_RESETTING, &adapter->flags); |
| 206 | } |
| 207 | |
| 208 | static void atl1c_reset_task(struct work_struct *work) |
| 209 | { |
| 210 | struct atl1c_adapter *adapter; |
| 211 | struct net_device *netdev; |
| 212 | |
| 213 | adapter = container_of(work, struct atl1c_adapter, reset_task); |
| 214 | netdev = adapter->netdev; |
| 215 | |
| 216 | netif_device_detach(netdev); |
| 217 | atl1c_down(adapter); |
| 218 | atl1c_up(adapter); |
| 219 | netif_device_attach(netdev); |
| 220 | } |
| 221 | |
| 222 | static void atl1c_check_link_status(struct atl1c_adapter *adapter) |
| 223 | { |
| 224 | struct atl1c_hw *hw = &adapter->hw; |
| 225 | struct net_device *netdev = adapter->netdev; |
| 226 | struct pci_dev *pdev = adapter->pdev; |
| 227 | int err; |
| 228 | unsigned long flags; |
| 229 | u16 speed, duplex, phy_data; |
| 230 | |
| 231 | spin_lock_irqsave(&adapter->mdio_lock, flags); |
| 232 | /* MII_BMSR must read twise */ |
| 233 | atl1c_read_phy_reg(hw, MII_BMSR, &phy_data); |
| 234 | atl1c_read_phy_reg(hw, MII_BMSR, &phy_data); |
| 235 | spin_unlock_irqrestore(&adapter->mdio_lock, flags); |
| 236 | |
| 237 | if ((phy_data & BMSR_LSTATUS) == 0) { |
| 238 | /* link down */ |
| 239 | if (netif_carrier_ok(netdev)) { |
| 240 | hw->hibernate = true; |
Jie Yang | 43250dd | 2009-02-18 17:24:15 -0800 | [diff] [blame] | 241 | if (atl1c_stop_mac(hw) != 0) |
| 242 | if (netif_msg_hw(adapter)) |
| 243 | dev_warn(&pdev->dev, |
| 244 | "stop mac failed\n"); |
Jie Yang | 52fbc10 | 2009-04-27 19:42:03 +0000 | [diff] [blame] | 245 | atl1c_set_aspm(hw, false); |
Jie Yang | 43250dd | 2009-02-18 17:24:15 -0800 | [diff] [blame] | 246 | } |
| 247 | netif_carrier_off(netdev); |
| 248 | } else { |
| 249 | /* Link Up */ |
| 250 | hw->hibernate = false; |
| 251 | spin_lock_irqsave(&adapter->mdio_lock, flags); |
| 252 | err = atl1c_get_speed_and_duplex(hw, &speed, &duplex); |
| 253 | spin_unlock_irqrestore(&adapter->mdio_lock, flags); |
| 254 | if (unlikely(err)) |
| 255 | return; |
| 256 | /* link result is our setting */ |
| 257 | if (adapter->link_speed != speed || |
| 258 | adapter->link_duplex != duplex) { |
| 259 | adapter->link_speed = speed; |
| 260 | adapter->link_duplex = duplex; |
Jie Yang | 52fbc10 | 2009-04-27 19:42:03 +0000 | [diff] [blame] | 261 | atl1c_set_aspm(hw, true); |
Jie Yang | 43250dd | 2009-02-18 17:24:15 -0800 | [diff] [blame] | 262 | atl1c_enable_tx_ctrl(hw); |
| 263 | atl1c_enable_rx_ctrl(hw); |
| 264 | atl1c_setup_mac_ctrl(adapter); |
Jie Yang | 43250dd | 2009-02-18 17:24:15 -0800 | [diff] [blame] | 265 | if (netif_msg_link(adapter)) |
| 266 | dev_info(&pdev->dev, |
| 267 | "%s: %s NIC Link is Up<%d Mbps %s>\n", |
| 268 | atl1c_driver_name, netdev->name, |
| 269 | adapter->link_speed, |
| 270 | adapter->link_duplex == FULL_DUPLEX ? |
| 271 | "Full Duplex" : "Half Duplex"); |
| 272 | } |
| 273 | if (!netif_carrier_ok(netdev)) |
| 274 | netif_carrier_on(netdev); |
| 275 | } |
| 276 | } |
| 277 | |
| 278 | /* |
| 279 | * atl1c_link_chg_task - deal with link change event Out of interrupt context |
| 280 | * @netdev: network interface device structure |
| 281 | */ |
| 282 | static void atl1c_link_chg_task(struct work_struct *work) |
| 283 | { |
| 284 | struct atl1c_adapter *adapter; |
| 285 | |
| 286 | adapter = container_of(work, struct atl1c_adapter, link_chg_task); |
| 287 | atl1c_check_link_status(adapter); |
| 288 | } |
| 289 | |
| 290 | static void atl1c_link_chg_event(struct atl1c_adapter *adapter) |
| 291 | { |
| 292 | struct net_device *netdev = adapter->netdev; |
| 293 | struct pci_dev *pdev = adapter->pdev; |
| 294 | u16 phy_data; |
| 295 | u16 link_up; |
| 296 | |
| 297 | spin_lock(&adapter->mdio_lock); |
| 298 | atl1c_read_phy_reg(&adapter->hw, MII_BMSR, &phy_data); |
| 299 | atl1c_read_phy_reg(&adapter->hw, MII_BMSR, &phy_data); |
| 300 | spin_unlock(&adapter->mdio_lock); |
| 301 | link_up = phy_data & BMSR_LSTATUS; |
| 302 | /* notify upper layer link down ASAP */ |
| 303 | if (!link_up) { |
| 304 | if (netif_carrier_ok(netdev)) { |
| 305 | /* old link state: Up */ |
| 306 | netif_carrier_off(netdev); |
| 307 | if (netif_msg_link(adapter)) |
| 308 | dev_info(&pdev->dev, |
| 309 | "%s: %s NIC Link is Down\n", |
| 310 | atl1c_driver_name, netdev->name); |
| 311 | adapter->link_speed = SPEED_0; |
| 312 | } |
| 313 | } |
| 314 | schedule_work(&adapter->link_chg_task); |
| 315 | } |
| 316 | |
| 317 | static void atl1c_del_timer(struct atl1c_adapter *adapter) |
| 318 | { |
| 319 | del_timer_sync(&adapter->phy_config_timer); |
| 320 | } |
| 321 | |
| 322 | static void atl1c_cancel_work(struct atl1c_adapter *adapter) |
| 323 | { |
| 324 | cancel_work_sync(&adapter->reset_task); |
| 325 | cancel_work_sync(&adapter->link_chg_task); |
| 326 | } |
| 327 | |
| 328 | /* |
| 329 | * atl1c_tx_timeout - Respond to a Tx Hang |
| 330 | * @netdev: network interface device structure |
| 331 | */ |
| 332 | static void atl1c_tx_timeout(struct net_device *netdev) |
| 333 | { |
| 334 | struct atl1c_adapter *adapter = netdev_priv(netdev); |
| 335 | |
| 336 | /* Do the reset outside of interrupt context */ |
| 337 | schedule_work(&adapter->reset_task); |
| 338 | } |
| 339 | |
| 340 | /* |
| 341 | * atl1c_set_multi - Multicast and Promiscuous mode set |
| 342 | * @netdev: network interface device structure |
| 343 | * |
| 344 | * The set_multi entry point is called whenever the multicast address |
| 345 | * list or the network interface flags are updated. This routine is |
| 346 | * responsible for configuring the hardware for proper multicast, |
| 347 | * promiscuous mode, and all-multi behavior. |
| 348 | */ |
| 349 | static void atl1c_set_multi(struct net_device *netdev) |
| 350 | { |
| 351 | struct atl1c_adapter *adapter = netdev_priv(netdev); |
| 352 | struct atl1c_hw *hw = &adapter->hw; |
| 353 | struct dev_mc_list *mc_ptr; |
| 354 | u32 mac_ctrl_data; |
| 355 | u32 hash_value; |
| 356 | |
| 357 | /* Check for Promiscuous and All Multicast modes */ |
| 358 | AT_READ_REG(hw, REG_MAC_CTRL, &mac_ctrl_data); |
| 359 | |
| 360 | if (netdev->flags & IFF_PROMISC) { |
| 361 | mac_ctrl_data |= MAC_CTRL_PROMIS_EN; |
| 362 | } else if (netdev->flags & IFF_ALLMULTI) { |
| 363 | mac_ctrl_data |= MAC_CTRL_MC_ALL_EN; |
| 364 | mac_ctrl_data &= ~MAC_CTRL_PROMIS_EN; |
| 365 | } else { |
| 366 | mac_ctrl_data &= ~(MAC_CTRL_PROMIS_EN | MAC_CTRL_MC_ALL_EN); |
| 367 | } |
| 368 | |
| 369 | AT_WRITE_REG(hw, REG_MAC_CTRL, mac_ctrl_data); |
| 370 | |
| 371 | /* clear the old settings from the multicast hash table */ |
| 372 | AT_WRITE_REG(hw, REG_RX_HASH_TABLE, 0); |
| 373 | AT_WRITE_REG_ARRAY(hw, REG_RX_HASH_TABLE, 1, 0); |
| 374 | |
| 375 | /* comoute mc addresses' hash value ,and put it into hash table */ |
| 376 | for (mc_ptr = netdev->mc_list; mc_ptr; mc_ptr = mc_ptr->next) { |
| 377 | hash_value = atl1c_hash_mc_addr(hw, mc_ptr->dmi_addr); |
| 378 | atl1c_hash_set(hw, hash_value); |
| 379 | } |
| 380 | } |
| 381 | |
| 382 | static void atl1c_vlan_rx_register(struct net_device *netdev, |
| 383 | struct vlan_group *grp) |
| 384 | { |
| 385 | struct atl1c_adapter *adapter = netdev_priv(netdev); |
| 386 | struct pci_dev *pdev = adapter->pdev; |
| 387 | u32 mac_ctrl_data = 0; |
| 388 | |
| 389 | if (netif_msg_pktdata(adapter)) |
| 390 | dev_dbg(&pdev->dev, "atl1c_vlan_rx_register\n"); |
| 391 | |
| 392 | atl1c_irq_disable(adapter); |
| 393 | |
| 394 | adapter->vlgrp = grp; |
| 395 | AT_READ_REG(&adapter->hw, REG_MAC_CTRL, &mac_ctrl_data); |
| 396 | |
| 397 | if (grp) { |
| 398 | /* enable VLAN tag insert/strip */ |
| 399 | mac_ctrl_data |= MAC_CTRL_RMV_VLAN; |
| 400 | } else { |
| 401 | /* disable VLAN tag insert/strip */ |
| 402 | mac_ctrl_data &= ~MAC_CTRL_RMV_VLAN; |
| 403 | } |
| 404 | |
| 405 | AT_WRITE_REG(&adapter->hw, REG_MAC_CTRL, mac_ctrl_data); |
| 406 | atl1c_irq_enable(adapter); |
| 407 | } |
| 408 | |
| 409 | static void atl1c_restore_vlan(struct atl1c_adapter *adapter) |
| 410 | { |
| 411 | struct pci_dev *pdev = adapter->pdev; |
| 412 | |
| 413 | if (netif_msg_pktdata(adapter)) |
| 414 | dev_dbg(&pdev->dev, "atl1c_restore_vlan !"); |
| 415 | atl1c_vlan_rx_register(adapter->netdev, adapter->vlgrp); |
| 416 | } |
| 417 | /* |
| 418 | * atl1c_set_mac - Change the Ethernet Address of the NIC |
| 419 | * @netdev: network interface device structure |
| 420 | * @p: pointer to an address structure |
| 421 | * |
| 422 | * Returns 0 on success, negative on failure |
| 423 | */ |
| 424 | static int atl1c_set_mac_addr(struct net_device *netdev, void *p) |
| 425 | { |
| 426 | struct atl1c_adapter *adapter = netdev_priv(netdev); |
| 427 | struct sockaddr *addr = p; |
| 428 | |
| 429 | if (!is_valid_ether_addr(addr->sa_data)) |
| 430 | return -EADDRNOTAVAIL; |
| 431 | |
| 432 | if (netif_running(netdev)) |
| 433 | return -EBUSY; |
| 434 | |
| 435 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); |
| 436 | memcpy(adapter->hw.mac_addr, addr->sa_data, netdev->addr_len); |
| 437 | |
| 438 | atl1c_hw_set_mac_addr(&adapter->hw); |
| 439 | |
| 440 | return 0; |
| 441 | } |
| 442 | |
| 443 | static void atl1c_set_rxbufsize(struct atl1c_adapter *adapter, |
| 444 | struct net_device *dev) |
| 445 | { |
| 446 | int mtu = dev->mtu; |
| 447 | |
| 448 | adapter->rx_buffer_len = mtu > AT_RX_BUF_SIZE ? |
| 449 | roundup(mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN, 8) : AT_RX_BUF_SIZE; |
| 450 | } |
| 451 | /* |
| 452 | * atl1c_change_mtu - Change the Maximum Transfer Unit |
| 453 | * @netdev: network interface device structure |
| 454 | * @new_mtu: new value for maximum frame size |
| 455 | * |
| 456 | * Returns 0 on success, negative on failure |
| 457 | */ |
| 458 | static int atl1c_change_mtu(struct net_device *netdev, int new_mtu) |
| 459 | { |
| 460 | struct atl1c_adapter *adapter = netdev_priv(netdev); |
| 461 | int old_mtu = netdev->mtu; |
| 462 | int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN; |
| 463 | |
| 464 | if ((max_frame < ETH_ZLEN + ETH_FCS_LEN) || |
| 465 | (max_frame > MAX_JUMBO_FRAME_SIZE)) { |
| 466 | if (netif_msg_link(adapter)) |
| 467 | dev_warn(&adapter->pdev->dev, "invalid MTU setting\n"); |
| 468 | return -EINVAL; |
| 469 | } |
| 470 | /* set MTU */ |
| 471 | if (old_mtu != new_mtu && netif_running(netdev)) { |
| 472 | while (test_and_set_bit(__AT_RESETTING, &adapter->flags)) |
| 473 | msleep(1); |
| 474 | netdev->mtu = new_mtu; |
| 475 | adapter->hw.max_frame_size = new_mtu; |
| 476 | atl1c_set_rxbufsize(adapter, netdev); |
| 477 | atl1c_down(adapter); |
| 478 | atl1c_up(adapter); |
| 479 | clear_bit(__AT_RESETTING, &adapter->flags); |
| 480 | if (adapter->hw.ctrl_flags & ATL1C_FPGA_VERSION) { |
| 481 | u32 phy_data; |
| 482 | |
| 483 | AT_READ_REG(&adapter->hw, 0x1414, &phy_data); |
| 484 | phy_data |= 0x10000000; |
| 485 | AT_WRITE_REG(&adapter->hw, 0x1414, phy_data); |
| 486 | } |
| 487 | |
| 488 | } |
| 489 | return 0; |
| 490 | } |
| 491 | |
| 492 | /* |
| 493 | * caller should hold mdio_lock |
| 494 | */ |
| 495 | static int atl1c_mdio_read(struct net_device *netdev, int phy_id, int reg_num) |
| 496 | { |
| 497 | struct atl1c_adapter *adapter = netdev_priv(netdev); |
| 498 | u16 result; |
| 499 | |
| 500 | atl1c_read_phy_reg(&adapter->hw, reg_num & MDIO_REG_ADDR_MASK, &result); |
| 501 | return result; |
| 502 | } |
| 503 | |
| 504 | static void atl1c_mdio_write(struct net_device *netdev, int phy_id, |
| 505 | int reg_num, int val) |
| 506 | { |
| 507 | struct atl1c_adapter *adapter = netdev_priv(netdev); |
| 508 | |
| 509 | atl1c_write_phy_reg(&adapter->hw, reg_num & MDIO_REG_ADDR_MASK, val); |
| 510 | } |
| 511 | |
| 512 | /* |
| 513 | * atl1c_mii_ioctl - |
| 514 | * @netdev: |
| 515 | * @ifreq: |
| 516 | * @cmd: |
| 517 | */ |
| 518 | static int atl1c_mii_ioctl(struct net_device *netdev, |
| 519 | struct ifreq *ifr, int cmd) |
| 520 | { |
| 521 | struct atl1c_adapter *adapter = netdev_priv(netdev); |
| 522 | struct pci_dev *pdev = adapter->pdev; |
| 523 | struct mii_ioctl_data *data = if_mii(ifr); |
| 524 | unsigned long flags; |
| 525 | int retval = 0; |
| 526 | |
| 527 | if (!netif_running(netdev)) |
| 528 | return -EINVAL; |
| 529 | |
| 530 | spin_lock_irqsave(&adapter->mdio_lock, flags); |
| 531 | switch (cmd) { |
| 532 | case SIOCGMIIPHY: |
| 533 | data->phy_id = 0; |
| 534 | break; |
| 535 | |
| 536 | case SIOCGMIIREG: |
| 537 | if (!capable(CAP_NET_ADMIN)) { |
| 538 | retval = -EPERM; |
| 539 | goto out; |
| 540 | } |
| 541 | if (atl1c_read_phy_reg(&adapter->hw, data->reg_num & 0x1F, |
| 542 | &data->val_out)) { |
| 543 | retval = -EIO; |
| 544 | goto out; |
| 545 | } |
| 546 | break; |
| 547 | |
| 548 | case SIOCSMIIREG: |
| 549 | if (!capable(CAP_NET_ADMIN)) { |
| 550 | retval = -EPERM; |
| 551 | goto out; |
| 552 | } |
| 553 | if (data->reg_num & ~(0x1F)) { |
| 554 | retval = -EFAULT; |
| 555 | goto out; |
| 556 | } |
| 557 | |
| 558 | dev_dbg(&pdev->dev, "<atl1c_mii_ioctl> write %x %x", |
| 559 | data->reg_num, data->val_in); |
| 560 | if (atl1c_write_phy_reg(&adapter->hw, |
| 561 | data->reg_num, data->val_in)) { |
| 562 | retval = -EIO; |
| 563 | goto out; |
| 564 | } |
| 565 | break; |
| 566 | |
| 567 | default: |
| 568 | retval = -EOPNOTSUPP; |
| 569 | break; |
| 570 | } |
| 571 | out: |
| 572 | spin_unlock_irqrestore(&adapter->mdio_lock, flags); |
| 573 | return retval; |
| 574 | } |
| 575 | |
| 576 | /* |
| 577 | * atl1c_ioctl - |
| 578 | * @netdev: |
| 579 | * @ifreq: |
| 580 | * @cmd: |
| 581 | */ |
| 582 | static int atl1c_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) |
| 583 | { |
| 584 | switch (cmd) { |
| 585 | case SIOCGMIIPHY: |
| 586 | case SIOCGMIIREG: |
| 587 | case SIOCSMIIREG: |
| 588 | return atl1c_mii_ioctl(netdev, ifr, cmd); |
| 589 | default: |
| 590 | return -EOPNOTSUPP; |
| 591 | } |
| 592 | } |
| 593 | |
| 594 | /* |
| 595 | * atl1c_alloc_queues - Allocate memory for all rings |
| 596 | * @adapter: board private structure to initialize |
| 597 | * |
| 598 | */ |
| 599 | static int __devinit atl1c_alloc_queues(struct atl1c_adapter *adapter) |
| 600 | { |
| 601 | return 0; |
| 602 | } |
| 603 | |
| 604 | static void atl1c_set_mac_type(struct atl1c_hw *hw) |
| 605 | { |
| 606 | switch (hw->device_id) { |
| 607 | case PCI_DEVICE_ID_ATTANSIC_L2C: |
| 608 | hw->nic_type = athr_l2c; |
| 609 | break; |
| 610 | |
| 611 | case PCI_DEVICE_ID_ATTANSIC_L1C: |
| 612 | hw->nic_type = athr_l1c; |
| 613 | break; |
| 614 | |
| 615 | default: |
| 616 | break; |
| 617 | } |
| 618 | } |
| 619 | |
| 620 | static int atl1c_setup_mac_funcs(struct atl1c_hw *hw) |
| 621 | { |
| 622 | u32 phy_status_data; |
| 623 | u32 link_ctrl_data; |
| 624 | |
| 625 | atl1c_set_mac_type(hw); |
| 626 | AT_READ_REG(hw, REG_PHY_STATUS, &phy_status_data); |
| 627 | AT_READ_REG(hw, REG_LINK_CTRL, &link_ctrl_data); |
| 628 | |
| 629 | hw->ctrl_flags = ATL1C_INTR_CLEAR_ON_READ | |
| 630 | ATL1C_INTR_MODRT_ENABLE | |
| 631 | ATL1C_RX_IPV6_CHKSUM | |
| 632 | ATL1C_TXQ_MODE_ENHANCE; |
| 633 | if (link_ctrl_data & LINK_CTRL_L0S_EN) |
| 634 | hw->ctrl_flags |= ATL1C_ASPM_L0S_SUPPORT; |
| 635 | if (link_ctrl_data & LINK_CTRL_L1_EN) |
| 636 | hw->ctrl_flags |= ATL1C_ASPM_L1_SUPPORT; |
| 637 | |
| 638 | if (hw->nic_type == athr_l1c) { |
| 639 | hw->ctrl_flags |= ATL1C_ASPM_CTRL_MON; |
| 640 | hw->ctrl_flags |= ATL1C_LINK_CAP_1000M; |
| 641 | } |
| 642 | return 0; |
| 643 | } |
| 644 | /* |
| 645 | * atl1c_sw_init - Initialize general software structures (struct atl1c_adapter) |
| 646 | * @adapter: board private structure to initialize |
| 647 | * |
| 648 | * atl1c_sw_init initializes the Adapter private data structure. |
| 649 | * Fields are initialized based on PCI device information and |
| 650 | * OS network device settings (MTU size). |
| 651 | */ |
| 652 | static int __devinit atl1c_sw_init(struct atl1c_adapter *adapter) |
| 653 | { |
| 654 | struct atl1c_hw *hw = &adapter->hw; |
| 655 | struct pci_dev *pdev = adapter->pdev; |
| 656 | |
| 657 | adapter->wol = 0; |
| 658 | adapter->link_speed = SPEED_0; |
| 659 | adapter->link_duplex = FULL_DUPLEX; |
| 660 | adapter->num_rx_queues = AT_DEF_RECEIVE_QUEUE; |
| 661 | adapter->tpd_ring[0].count = 1024; |
| 662 | adapter->rfd_ring[0].count = 512; |
| 663 | |
| 664 | hw->vendor_id = pdev->vendor; |
| 665 | hw->device_id = pdev->device; |
| 666 | hw->subsystem_vendor_id = pdev->subsystem_vendor; |
| 667 | hw->subsystem_id = pdev->subsystem_device; |
| 668 | |
| 669 | /* before link up, we assume hibernate is true */ |
| 670 | hw->hibernate = true; |
| 671 | hw->media_type = MEDIA_TYPE_AUTO_SENSOR; |
| 672 | if (atl1c_setup_mac_funcs(hw) != 0) { |
| 673 | dev_err(&pdev->dev, "set mac function pointers failed\n"); |
| 674 | return -1; |
| 675 | } |
| 676 | hw->intr_mask = IMR_NORMAL_MASK; |
| 677 | hw->phy_configured = false; |
| 678 | hw->preamble_len = 7; |
| 679 | hw->max_frame_size = adapter->netdev->mtu; |
| 680 | if (adapter->num_rx_queues < 2) { |
| 681 | hw->rss_type = atl1c_rss_disable; |
| 682 | hw->rss_mode = atl1c_rss_mode_disable; |
| 683 | } else { |
| 684 | hw->rss_type = atl1c_rss_ipv4; |
| 685 | hw->rss_mode = atl1c_rss_mul_que_mul_int; |
| 686 | hw->rss_hash_bits = 16; |
| 687 | } |
| 688 | hw->autoneg_advertised = ADVERTISED_Autoneg; |
| 689 | hw->indirect_tab = 0xE4E4E4E4; |
| 690 | hw->base_cpu = 0; |
| 691 | |
| 692 | hw->ict = 50000; /* 100ms */ |
| 693 | hw->smb_timer = 200000; /* 400ms */ |
| 694 | hw->cmb_tpd = 4; |
| 695 | hw->cmb_tx_timer = 1; /* 2 us */ |
| 696 | hw->rx_imt = 200; |
| 697 | hw->tx_imt = 1000; |
| 698 | |
| 699 | hw->tpd_burst = 5; |
| 700 | hw->rfd_burst = 8; |
| 701 | hw->dma_order = atl1c_dma_ord_out; |
| 702 | hw->dmar_block = atl1c_dma_req_1024; |
| 703 | hw->dmaw_block = atl1c_dma_req_1024; |
| 704 | hw->dmar_dly_cnt = 15; |
| 705 | hw->dmaw_dly_cnt = 4; |
| 706 | |
| 707 | if (atl1c_alloc_queues(adapter)) { |
| 708 | dev_err(&pdev->dev, "Unable to allocate memory for queues\n"); |
| 709 | return -ENOMEM; |
| 710 | } |
| 711 | /* TODO */ |
| 712 | atl1c_set_rxbufsize(adapter, adapter->netdev); |
| 713 | atomic_set(&adapter->irq_sem, 1); |
| 714 | spin_lock_init(&adapter->mdio_lock); |
| 715 | spin_lock_init(&adapter->tx_lock); |
| 716 | set_bit(__AT_DOWN, &adapter->flags); |
| 717 | |
| 718 | return 0; |
| 719 | } |
| 720 | |
| 721 | /* |
| 722 | * atl1c_clean_tx_ring - Free Tx-skb |
| 723 | * @adapter: board private structure |
| 724 | */ |
| 725 | static void atl1c_clean_tx_ring(struct atl1c_adapter *adapter, |
| 726 | enum atl1c_trans_queue type) |
| 727 | { |
| 728 | struct atl1c_tpd_ring *tpd_ring = &adapter->tpd_ring[type]; |
| 729 | struct atl1c_buffer *buffer_info; |
| 730 | struct pci_dev *pdev = adapter->pdev; |
| 731 | u16 index, ring_count; |
| 732 | |
| 733 | ring_count = tpd_ring->count; |
| 734 | for (index = 0; index < ring_count; index++) { |
| 735 | buffer_info = &tpd_ring->buffer_info[index]; |
| 736 | if (buffer_info->state == ATL1_BUFFER_FREE) |
| 737 | continue; |
| 738 | if (buffer_info->dma) |
| 739 | pci_unmap_single(pdev, buffer_info->dma, |
| 740 | buffer_info->length, |
| 741 | PCI_DMA_TODEVICE); |
| 742 | if (buffer_info->skb) |
| 743 | dev_kfree_skb(buffer_info->skb); |
| 744 | buffer_info->dma = 0; |
| 745 | buffer_info->skb = NULL; |
| 746 | buffer_info->state = ATL1_BUFFER_FREE; |
| 747 | } |
| 748 | |
| 749 | /* Zero out Tx-buffers */ |
| 750 | memset(tpd_ring->desc, 0, sizeof(struct atl1c_tpd_desc) * |
| 751 | ring_count); |
| 752 | atomic_set(&tpd_ring->next_to_clean, 0); |
| 753 | tpd_ring->next_to_use = 0; |
| 754 | } |
| 755 | |
| 756 | /* |
| 757 | * atl1c_clean_rx_ring - Free rx-reservation skbs |
| 758 | * @adapter: board private structure |
| 759 | */ |
| 760 | static void atl1c_clean_rx_ring(struct atl1c_adapter *adapter) |
| 761 | { |
| 762 | struct atl1c_rfd_ring *rfd_ring = adapter->rfd_ring; |
| 763 | struct atl1c_rrd_ring *rrd_ring = adapter->rrd_ring; |
| 764 | struct atl1c_buffer *buffer_info; |
| 765 | struct pci_dev *pdev = adapter->pdev; |
| 766 | int i, j; |
| 767 | |
| 768 | for (i = 0; i < adapter->num_rx_queues; i++) { |
| 769 | for (j = 0; j < rfd_ring[i].count; j++) { |
| 770 | buffer_info = &rfd_ring[i].buffer_info[j]; |
| 771 | if (buffer_info->state == ATL1_BUFFER_FREE) |
| 772 | continue; |
| 773 | if (buffer_info->dma) |
| 774 | pci_unmap_single(pdev, buffer_info->dma, |
| 775 | buffer_info->length, |
| 776 | PCI_DMA_FROMDEVICE); |
| 777 | if (buffer_info->skb) |
| 778 | dev_kfree_skb(buffer_info->skb); |
| 779 | buffer_info->state = ATL1_BUFFER_FREE; |
| 780 | buffer_info->skb = NULL; |
| 781 | } |
| 782 | /* zero out the descriptor ring */ |
| 783 | memset(rfd_ring[i].desc, 0, rfd_ring[i].size); |
| 784 | rfd_ring[i].next_to_clean = 0; |
| 785 | rfd_ring[i].next_to_use = 0; |
| 786 | rrd_ring[i].next_to_use = 0; |
| 787 | rrd_ring[i].next_to_clean = 0; |
| 788 | } |
| 789 | } |
| 790 | |
| 791 | /* |
| 792 | * Read / Write Ptr Initialize: |
| 793 | */ |
| 794 | static void atl1c_init_ring_ptrs(struct atl1c_adapter *adapter) |
| 795 | { |
| 796 | struct atl1c_tpd_ring *tpd_ring = adapter->tpd_ring; |
| 797 | struct atl1c_rfd_ring *rfd_ring = adapter->rfd_ring; |
| 798 | struct atl1c_rrd_ring *rrd_ring = adapter->rrd_ring; |
| 799 | struct atl1c_buffer *buffer_info; |
| 800 | int i, j; |
| 801 | |
| 802 | for (i = 0; i < AT_MAX_TRANSMIT_QUEUE; i++) { |
| 803 | tpd_ring[i].next_to_use = 0; |
| 804 | atomic_set(&tpd_ring[i].next_to_clean, 0); |
| 805 | buffer_info = tpd_ring[i].buffer_info; |
| 806 | for (j = 0; j < tpd_ring->count; j++) |
| 807 | buffer_info[i].state = ATL1_BUFFER_FREE; |
| 808 | } |
| 809 | for (i = 0; i < adapter->num_rx_queues; i++) { |
| 810 | rfd_ring[i].next_to_use = 0; |
| 811 | rfd_ring[i].next_to_clean = 0; |
| 812 | rrd_ring[i].next_to_use = 0; |
| 813 | rrd_ring[i].next_to_clean = 0; |
| 814 | for (j = 0; j < rfd_ring[i].count; j++) { |
| 815 | buffer_info = &rfd_ring[i].buffer_info[j]; |
| 816 | buffer_info->state = ATL1_BUFFER_FREE; |
| 817 | } |
| 818 | } |
| 819 | } |
| 820 | |
| 821 | /* |
| 822 | * atl1c_free_ring_resources - Free Tx / RX descriptor Resources |
| 823 | * @adapter: board private structure |
| 824 | * |
| 825 | * Free all transmit software resources |
| 826 | */ |
| 827 | static void atl1c_free_ring_resources(struct atl1c_adapter *adapter) |
| 828 | { |
| 829 | struct pci_dev *pdev = adapter->pdev; |
| 830 | |
| 831 | pci_free_consistent(pdev, adapter->ring_header.size, |
| 832 | adapter->ring_header.desc, |
| 833 | adapter->ring_header.dma); |
| 834 | adapter->ring_header.desc = NULL; |
| 835 | |
| 836 | /* Note: just free tdp_ring.buffer_info, |
| 837 | * it contain rfd_ring.buffer_info, do not double free */ |
| 838 | if (adapter->tpd_ring[0].buffer_info) { |
| 839 | kfree(adapter->tpd_ring[0].buffer_info); |
| 840 | adapter->tpd_ring[0].buffer_info = NULL; |
| 841 | } |
| 842 | } |
| 843 | |
| 844 | /* |
| 845 | * atl1c_setup_mem_resources - allocate Tx / RX descriptor resources |
| 846 | * @adapter: board private structure |
| 847 | * |
| 848 | * Return 0 on success, negative on failure |
| 849 | */ |
| 850 | static int atl1c_setup_ring_resources(struct atl1c_adapter *adapter) |
| 851 | { |
| 852 | struct pci_dev *pdev = adapter->pdev; |
| 853 | struct atl1c_tpd_ring *tpd_ring = adapter->tpd_ring; |
| 854 | struct atl1c_rfd_ring *rfd_ring = adapter->rfd_ring; |
| 855 | struct atl1c_rrd_ring *rrd_ring = adapter->rrd_ring; |
| 856 | struct atl1c_ring_header *ring_header = &adapter->ring_header; |
| 857 | int num_rx_queues = adapter->num_rx_queues; |
| 858 | int size; |
| 859 | int i; |
| 860 | int count = 0; |
| 861 | int rx_desc_count = 0; |
| 862 | u32 offset = 0; |
| 863 | |
| 864 | rrd_ring[0].count = rfd_ring[0].count; |
| 865 | for (i = 1; i < AT_MAX_TRANSMIT_QUEUE; i++) |
| 866 | tpd_ring[i].count = tpd_ring[0].count; |
| 867 | |
| 868 | for (i = 1; i < adapter->num_rx_queues; i++) |
| 869 | rfd_ring[i].count = rrd_ring[i].count = rfd_ring[0].count; |
| 870 | |
| 871 | /* 2 tpd queue, one high priority queue, |
| 872 | * another normal priority queue */ |
| 873 | size = sizeof(struct atl1c_buffer) * (tpd_ring->count * 2 + |
| 874 | rfd_ring->count * num_rx_queues); |
| 875 | tpd_ring->buffer_info = kzalloc(size, GFP_KERNEL); |
| 876 | if (unlikely(!tpd_ring->buffer_info)) { |
| 877 | dev_err(&pdev->dev, "kzalloc failed, size = %d\n", |
| 878 | size); |
| 879 | goto err_nomem; |
| 880 | } |
| 881 | for (i = 0; i < AT_MAX_TRANSMIT_QUEUE; i++) { |
| 882 | tpd_ring[i].buffer_info = |
| 883 | (struct atl1c_buffer *) (tpd_ring->buffer_info + count); |
| 884 | count += tpd_ring[i].count; |
| 885 | } |
| 886 | |
| 887 | for (i = 0; i < num_rx_queues; i++) { |
| 888 | rfd_ring[i].buffer_info = |
| 889 | (struct atl1c_buffer *) (tpd_ring->buffer_info + count); |
| 890 | count += rfd_ring[i].count; |
| 891 | rx_desc_count += rfd_ring[i].count; |
| 892 | } |
| 893 | /* |
| 894 | * real ring DMA buffer |
| 895 | * each ring/block may need up to 8 bytes for alignment, hence the |
| 896 | * additional bytes tacked onto the end. |
| 897 | */ |
| 898 | ring_header->size = size = |
| 899 | sizeof(struct atl1c_tpd_desc) * tpd_ring->count * 2 + |
| 900 | sizeof(struct atl1c_rx_free_desc) * rx_desc_count + |
| 901 | sizeof(struct atl1c_recv_ret_status) * rx_desc_count + |
| 902 | sizeof(struct atl1c_hw_stats) + |
| 903 | 8 * 4 + 8 * 2 * num_rx_queues; |
| 904 | |
| 905 | ring_header->desc = pci_alloc_consistent(pdev, ring_header->size, |
| 906 | &ring_header->dma); |
| 907 | if (unlikely(!ring_header->desc)) { |
| 908 | dev_err(&pdev->dev, "pci_alloc_consistend failed\n"); |
| 909 | goto err_nomem; |
| 910 | } |
| 911 | memset(ring_header->desc, 0, ring_header->size); |
| 912 | /* init TPD ring */ |
| 913 | |
| 914 | tpd_ring[0].dma = roundup(ring_header->dma, 8); |
| 915 | offset = tpd_ring[0].dma - ring_header->dma; |
| 916 | for (i = 0; i < AT_MAX_TRANSMIT_QUEUE; i++) { |
| 917 | tpd_ring[i].dma = ring_header->dma + offset; |
| 918 | tpd_ring[i].desc = (u8 *) ring_header->desc + offset; |
| 919 | tpd_ring[i].size = |
| 920 | sizeof(struct atl1c_tpd_desc) * tpd_ring[i].count; |
| 921 | offset += roundup(tpd_ring[i].size, 8); |
| 922 | } |
| 923 | /* init RFD ring */ |
| 924 | for (i = 0; i < num_rx_queues; i++) { |
| 925 | rfd_ring[i].dma = ring_header->dma + offset; |
| 926 | rfd_ring[i].desc = (u8 *) ring_header->desc + offset; |
| 927 | rfd_ring[i].size = sizeof(struct atl1c_rx_free_desc) * |
| 928 | rfd_ring[i].count; |
| 929 | offset += roundup(rfd_ring[i].size, 8); |
| 930 | } |
| 931 | |
| 932 | /* init RRD ring */ |
| 933 | for (i = 0; i < num_rx_queues; i++) { |
| 934 | rrd_ring[i].dma = ring_header->dma + offset; |
| 935 | rrd_ring[i].desc = (u8 *) ring_header->desc + offset; |
| 936 | rrd_ring[i].size = sizeof(struct atl1c_recv_ret_status) * |
| 937 | rrd_ring[i].count; |
| 938 | offset += roundup(rrd_ring[i].size, 8); |
| 939 | } |
| 940 | |
| 941 | adapter->smb.dma = ring_header->dma + offset; |
| 942 | adapter->smb.smb = (u8 *)ring_header->desc + offset; |
| 943 | return 0; |
| 944 | |
| 945 | err_nomem: |
| 946 | kfree(tpd_ring->buffer_info); |
| 947 | return -ENOMEM; |
| 948 | } |
| 949 | |
| 950 | static void atl1c_configure_des_ring(struct atl1c_adapter *adapter) |
| 951 | { |
| 952 | struct atl1c_hw *hw = &adapter->hw; |
| 953 | struct atl1c_rfd_ring *rfd_ring = (struct atl1c_rfd_ring *) |
| 954 | adapter->rfd_ring; |
| 955 | struct atl1c_rrd_ring *rrd_ring = (struct atl1c_rrd_ring *) |
| 956 | adapter->rrd_ring; |
| 957 | struct atl1c_tpd_ring *tpd_ring = (struct atl1c_tpd_ring *) |
| 958 | adapter->tpd_ring; |
| 959 | struct atl1c_cmb *cmb = (struct atl1c_cmb *) &adapter->cmb; |
| 960 | struct atl1c_smb *smb = (struct atl1c_smb *) &adapter->smb; |
| 961 | int i; |
| 962 | |
| 963 | /* TPD */ |
| 964 | AT_WRITE_REG(hw, REG_TX_BASE_ADDR_HI, |
| 965 | (u32)((tpd_ring[atl1c_trans_normal].dma & |
| 966 | AT_DMA_HI_ADDR_MASK) >> 32)); |
| 967 | /* just enable normal priority TX queue */ |
| 968 | AT_WRITE_REG(hw, REG_NTPD_HEAD_ADDR_LO, |
| 969 | (u32)(tpd_ring[atl1c_trans_normal].dma & |
| 970 | AT_DMA_LO_ADDR_MASK)); |
| 971 | AT_WRITE_REG(hw, REG_HTPD_HEAD_ADDR_LO, |
| 972 | (u32)(tpd_ring[atl1c_trans_high].dma & |
| 973 | AT_DMA_LO_ADDR_MASK)); |
| 974 | AT_WRITE_REG(hw, REG_TPD_RING_SIZE, |
| 975 | (u32)(tpd_ring[0].count & TPD_RING_SIZE_MASK)); |
| 976 | |
| 977 | |
| 978 | /* RFD */ |
| 979 | AT_WRITE_REG(hw, REG_RX_BASE_ADDR_HI, |
| 980 | (u32)((rfd_ring[0].dma & AT_DMA_HI_ADDR_MASK) >> 32)); |
| 981 | for (i = 0; i < adapter->num_rx_queues; i++) |
| 982 | AT_WRITE_REG(hw, atl1c_rfd_addr_lo_regs[i], |
| 983 | (u32)(rfd_ring[i].dma & AT_DMA_LO_ADDR_MASK)); |
| 984 | |
| 985 | AT_WRITE_REG(hw, REG_RFD_RING_SIZE, |
| 986 | rfd_ring[0].count & RFD_RING_SIZE_MASK); |
| 987 | AT_WRITE_REG(hw, REG_RX_BUF_SIZE, |
| 988 | adapter->rx_buffer_len & RX_BUF_SIZE_MASK); |
| 989 | |
| 990 | /* RRD */ |
| 991 | for (i = 0; i < adapter->num_rx_queues; i++) |
| 992 | AT_WRITE_REG(hw, atl1c_rrd_addr_lo_regs[i], |
| 993 | (u32)(rrd_ring[i].dma & AT_DMA_LO_ADDR_MASK)); |
| 994 | AT_WRITE_REG(hw, REG_RRD_RING_SIZE, |
| 995 | (rrd_ring[0].count & RRD_RING_SIZE_MASK)); |
| 996 | |
| 997 | /* CMB */ |
| 998 | AT_WRITE_REG(hw, REG_CMB_BASE_ADDR_LO, cmb->dma & AT_DMA_LO_ADDR_MASK); |
| 999 | |
| 1000 | /* SMB */ |
| 1001 | AT_WRITE_REG(hw, REG_SMB_BASE_ADDR_HI, |
| 1002 | (u32)((smb->dma & AT_DMA_HI_ADDR_MASK) >> 32)); |
| 1003 | AT_WRITE_REG(hw, REG_SMB_BASE_ADDR_LO, |
| 1004 | (u32)(smb->dma & AT_DMA_LO_ADDR_MASK)); |
| 1005 | /* Load all of base address above */ |
| 1006 | AT_WRITE_REG(hw, REG_LOAD_PTR, 1); |
| 1007 | } |
| 1008 | |
| 1009 | static void atl1c_configure_tx(struct atl1c_adapter *adapter) |
| 1010 | { |
| 1011 | struct atl1c_hw *hw = &adapter->hw; |
| 1012 | u32 dev_ctrl_data; |
| 1013 | u32 max_pay_load; |
| 1014 | u16 tx_offload_thresh; |
| 1015 | u32 txq_ctrl_data; |
| 1016 | u32 extra_size = 0; /* Jumbo frame threshold in QWORD unit */ |
| 1017 | |
| 1018 | extra_size = ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN; |
| 1019 | tx_offload_thresh = MAX_TX_OFFLOAD_THRESH; |
| 1020 | AT_WRITE_REG(hw, REG_TX_TSO_OFFLOAD_THRESH, |
| 1021 | (tx_offload_thresh >> 3) & TX_TSO_OFFLOAD_THRESH_MASK); |
| 1022 | AT_READ_REG(hw, REG_DEVICE_CTRL, &dev_ctrl_data); |
| 1023 | max_pay_load = (dev_ctrl_data >> DEVICE_CTRL_MAX_PAYLOAD_SHIFT) & |
| 1024 | DEVICE_CTRL_MAX_PAYLOAD_MASK; |
| 1025 | hw->dmaw_block = min(max_pay_load, hw->dmaw_block); |
| 1026 | max_pay_load = (dev_ctrl_data >> DEVICE_CTRL_MAX_RREQ_SZ_SHIFT) & |
| 1027 | DEVICE_CTRL_MAX_RREQ_SZ_MASK; |
| 1028 | hw->dmar_block = min(max_pay_load, hw->dmar_block); |
| 1029 | |
| 1030 | txq_ctrl_data = (hw->tpd_burst & TXQ_NUM_TPD_BURST_MASK) << |
| 1031 | TXQ_NUM_TPD_BURST_SHIFT; |
| 1032 | if (hw->ctrl_flags & ATL1C_TXQ_MODE_ENHANCE) |
| 1033 | txq_ctrl_data |= TXQ_CTRL_ENH_MODE; |
| 1034 | txq_ctrl_data |= (atl1c_pay_load_size[hw->dmar_block] & |
| 1035 | TXQ_TXF_BURST_NUM_MASK) << TXQ_TXF_BURST_NUM_SHIFT; |
| 1036 | |
| 1037 | AT_WRITE_REG(hw, REG_TXQ_CTRL, txq_ctrl_data); |
| 1038 | } |
| 1039 | |
| 1040 | static void atl1c_configure_rx(struct atl1c_adapter *adapter) |
| 1041 | { |
| 1042 | struct atl1c_hw *hw = &adapter->hw; |
| 1043 | u32 rxq_ctrl_data; |
| 1044 | |
| 1045 | rxq_ctrl_data = (hw->rfd_burst & RXQ_RFD_BURST_NUM_MASK) << |
| 1046 | RXQ_RFD_BURST_NUM_SHIFT; |
| 1047 | |
| 1048 | if (hw->ctrl_flags & ATL1C_RX_IPV6_CHKSUM) |
| 1049 | rxq_ctrl_data |= IPV6_CHKSUM_CTRL_EN; |
| 1050 | if (hw->rss_type == atl1c_rss_ipv4) |
| 1051 | rxq_ctrl_data |= RSS_HASH_IPV4; |
| 1052 | if (hw->rss_type == atl1c_rss_ipv4_tcp) |
| 1053 | rxq_ctrl_data |= RSS_HASH_IPV4_TCP; |
| 1054 | if (hw->rss_type == atl1c_rss_ipv6) |
| 1055 | rxq_ctrl_data |= RSS_HASH_IPV6; |
| 1056 | if (hw->rss_type == atl1c_rss_ipv6_tcp) |
| 1057 | rxq_ctrl_data |= RSS_HASH_IPV6_TCP; |
| 1058 | if (hw->rss_type != atl1c_rss_disable) |
| 1059 | rxq_ctrl_data |= RRS_HASH_CTRL_EN; |
| 1060 | |
| 1061 | rxq_ctrl_data |= (hw->rss_mode & RSS_MODE_MASK) << |
| 1062 | RSS_MODE_SHIFT; |
| 1063 | rxq_ctrl_data |= (hw->rss_hash_bits & RSS_HASH_BITS_MASK) << |
| 1064 | RSS_HASH_BITS_SHIFT; |
| 1065 | if (hw->ctrl_flags & ATL1C_ASPM_CTRL_MON) |
| 1066 | rxq_ctrl_data |= (ASPM_THRUPUT_LIMIT_100M & |
| 1067 | ASPM_THRUPUT_LIMIT_MASK) << ASPM_THRUPUT_LIMIT_SHIFT; |
| 1068 | |
| 1069 | AT_WRITE_REG(hw, REG_RXQ_CTRL, rxq_ctrl_data); |
| 1070 | } |
| 1071 | |
| 1072 | static void atl1c_configure_rss(struct atl1c_adapter *adapter) |
| 1073 | { |
| 1074 | struct atl1c_hw *hw = &adapter->hw; |
| 1075 | |
| 1076 | AT_WRITE_REG(hw, REG_IDT_TABLE, hw->indirect_tab); |
| 1077 | AT_WRITE_REG(hw, REG_BASE_CPU_NUMBER, hw->base_cpu); |
| 1078 | } |
| 1079 | |
| 1080 | static void atl1c_configure_dma(struct atl1c_adapter *adapter) |
| 1081 | { |
| 1082 | struct atl1c_hw *hw = &adapter->hw; |
| 1083 | u32 dma_ctrl_data; |
| 1084 | |
| 1085 | dma_ctrl_data = DMA_CTRL_DMAR_REQ_PRI; |
| 1086 | if (hw->ctrl_flags & ATL1C_CMB_ENABLE) |
| 1087 | dma_ctrl_data |= DMA_CTRL_CMB_EN; |
| 1088 | if (hw->ctrl_flags & ATL1C_SMB_ENABLE) |
| 1089 | dma_ctrl_data |= DMA_CTRL_SMB_EN; |
| 1090 | else |
| 1091 | dma_ctrl_data |= MAC_CTRL_SMB_DIS; |
| 1092 | |
| 1093 | switch (hw->dma_order) { |
| 1094 | case atl1c_dma_ord_in: |
| 1095 | dma_ctrl_data |= DMA_CTRL_DMAR_IN_ORDER; |
| 1096 | break; |
| 1097 | case atl1c_dma_ord_enh: |
| 1098 | dma_ctrl_data |= DMA_CTRL_DMAR_ENH_ORDER; |
| 1099 | break; |
| 1100 | case atl1c_dma_ord_out: |
| 1101 | dma_ctrl_data |= DMA_CTRL_DMAR_OUT_ORDER; |
| 1102 | break; |
| 1103 | default: |
| 1104 | break; |
| 1105 | } |
| 1106 | |
| 1107 | dma_ctrl_data |= (((u32)hw->dmar_block) & DMA_CTRL_DMAR_BURST_LEN_MASK) |
| 1108 | << DMA_CTRL_DMAR_BURST_LEN_SHIFT; |
| 1109 | dma_ctrl_data |= (((u32)hw->dmaw_block) & DMA_CTRL_DMAW_BURST_LEN_MASK) |
| 1110 | << DMA_CTRL_DMAW_BURST_LEN_SHIFT; |
| 1111 | dma_ctrl_data |= (((u32)hw->dmar_dly_cnt) & DMA_CTRL_DMAR_DLY_CNT_MASK) |
| 1112 | << DMA_CTRL_DMAR_DLY_CNT_SHIFT; |
| 1113 | dma_ctrl_data |= (((u32)hw->dmaw_dly_cnt) & DMA_CTRL_DMAW_DLY_CNT_MASK) |
| 1114 | << DMA_CTRL_DMAW_DLY_CNT_SHIFT; |
| 1115 | |
| 1116 | AT_WRITE_REG(hw, REG_DMA_CTRL, dma_ctrl_data); |
| 1117 | } |
| 1118 | |
| 1119 | /* |
| 1120 | * Stop the mac, transmit and receive units |
| 1121 | * hw - Struct containing variables accessed by shared code |
| 1122 | * return : 0 or idle status (if error) |
| 1123 | */ |
| 1124 | static int atl1c_stop_mac(struct atl1c_hw *hw) |
| 1125 | { |
| 1126 | u32 data; |
Jie Yang | 43250dd | 2009-02-18 17:24:15 -0800 | [diff] [blame] | 1127 | |
| 1128 | AT_READ_REG(hw, REG_RXQ_CTRL, &data); |
| 1129 | data &= ~(RXQ1_CTRL_EN | RXQ2_CTRL_EN | |
| 1130 | RXQ3_CTRL_EN | RXQ_CTRL_EN); |
| 1131 | AT_WRITE_REG(hw, REG_RXQ_CTRL, data); |
| 1132 | |
| 1133 | AT_READ_REG(hw, REG_TXQ_CTRL, &data); |
| 1134 | data &= ~TXQ_CTRL_EN; |
| 1135 | AT_WRITE_REG(hw, REG_TWSI_CTRL, data); |
| 1136 | |
Joe Perches | c930a66 | 2009-05-31 20:44:54 +0000 | [diff] [blame] | 1137 | atl1c_wait_until_idle(hw); |
Jie Yang | 43250dd | 2009-02-18 17:24:15 -0800 | [diff] [blame] | 1138 | |
| 1139 | AT_READ_REG(hw, REG_MAC_CTRL, &data); |
| 1140 | data &= ~(MAC_CTRL_TX_EN | MAC_CTRL_RX_EN); |
| 1141 | AT_WRITE_REG(hw, REG_MAC_CTRL, data); |
| 1142 | |
Joe Perches | c930a66 | 2009-05-31 20:44:54 +0000 | [diff] [blame] | 1143 | return (int)atl1c_wait_until_idle(hw); |
Jie Yang | 43250dd | 2009-02-18 17:24:15 -0800 | [diff] [blame] | 1144 | } |
| 1145 | |
| 1146 | static void atl1c_enable_rx_ctrl(struct atl1c_hw *hw) |
| 1147 | { |
| 1148 | u32 data; |
| 1149 | |
| 1150 | AT_READ_REG(hw, REG_RXQ_CTRL, &data); |
| 1151 | switch (hw->adapter->num_rx_queues) { |
| 1152 | case 4: |
| 1153 | data |= (RXQ3_CTRL_EN | RXQ2_CTRL_EN | RXQ1_CTRL_EN); |
| 1154 | break; |
| 1155 | case 3: |
| 1156 | data |= (RXQ2_CTRL_EN | RXQ1_CTRL_EN); |
| 1157 | break; |
| 1158 | case 2: |
| 1159 | data |= RXQ1_CTRL_EN; |
| 1160 | break; |
| 1161 | default: |
| 1162 | break; |
| 1163 | } |
| 1164 | data |= RXQ_CTRL_EN; |
| 1165 | AT_WRITE_REG(hw, REG_RXQ_CTRL, data); |
| 1166 | } |
| 1167 | |
| 1168 | static void atl1c_enable_tx_ctrl(struct atl1c_hw *hw) |
| 1169 | { |
| 1170 | u32 data; |
| 1171 | |
| 1172 | AT_READ_REG(hw, REG_TXQ_CTRL, &data); |
| 1173 | data |= TXQ_CTRL_EN; |
| 1174 | AT_WRITE_REG(hw, REG_TXQ_CTRL, data); |
| 1175 | } |
| 1176 | |
| 1177 | /* |
| 1178 | * Reset the transmit and receive units; mask and clear all interrupts. |
| 1179 | * hw - Struct containing variables accessed by shared code |
| 1180 | * return : 0 or idle status (if error) |
| 1181 | */ |
| 1182 | static int atl1c_reset_mac(struct atl1c_hw *hw) |
| 1183 | { |
| 1184 | struct atl1c_adapter *adapter = (struct atl1c_adapter *)hw->adapter; |
| 1185 | struct pci_dev *pdev = adapter->pdev; |
Jie Yang | 43250dd | 2009-02-18 17:24:15 -0800 | [diff] [blame] | 1186 | int ret; |
| 1187 | |
| 1188 | AT_WRITE_REG(hw, REG_IMR, 0); |
| 1189 | AT_WRITE_REG(hw, REG_ISR, ISR_DIS_INT); |
| 1190 | |
| 1191 | ret = atl1c_stop_mac(hw); |
| 1192 | if (ret) |
| 1193 | return ret; |
| 1194 | /* |
| 1195 | * Issue Soft Reset to the MAC. This will reset the chip's |
| 1196 | * transmit, receive, DMA. It will not effect |
| 1197 | * the current PCI configuration. The global reset bit is self- |
| 1198 | * clearing, and should clear within a microsecond. |
| 1199 | */ |
| 1200 | AT_WRITE_REGW(hw, REG_MASTER_CTRL, MASTER_CTRL_SOFT_RST); |
| 1201 | AT_WRITE_FLUSH(hw); |
| 1202 | msleep(10); |
| 1203 | /* Wait at least 10ms for All module to be Idle */ |
Joe Perches | c930a66 | 2009-05-31 20:44:54 +0000 | [diff] [blame] | 1204 | |
| 1205 | if (atl1c_wait_until_idle(hw)) { |
Jie Yang | 43250dd | 2009-02-18 17:24:15 -0800 | [diff] [blame] | 1206 | dev_err(&pdev->dev, |
Joe Perches | c930a66 | 2009-05-31 20:44:54 +0000 | [diff] [blame] | 1207 | "MAC state machine can't be idle since" |
Jie Yang | 43250dd | 2009-02-18 17:24:15 -0800 | [diff] [blame] | 1208 | " disabled for 10ms second\n"); |
| 1209 | return -1; |
| 1210 | } |
| 1211 | return 0; |
| 1212 | } |
| 1213 | |
| 1214 | static void atl1c_disable_l0s_l1(struct atl1c_hw *hw) |
| 1215 | { |
| 1216 | u32 pm_ctrl_data; |
| 1217 | |
| 1218 | AT_READ_REG(hw, REG_PM_CTRL, &pm_ctrl_data); |
| 1219 | pm_ctrl_data &= ~(PM_CTRL_L1_ENTRY_TIMER_MASK << |
| 1220 | PM_CTRL_L1_ENTRY_TIMER_SHIFT); |
| 1221 | pm_ctrl_data &= ~PM_CTRL_CLK_SWH_L1; |
| 1222 | pm_ctrl_data &= ~PM_CTRL_ASPM_L0S_EN; |
| 1223 | pm_ctrl_data &= ~PM_CTRL_ASPM_L1_EN; |
| 1224 | pm_ctrl_data &= ~PM_CTRL_MAC_ASPM_CHK; |
| 1225 | pm_ctrl_data &= ~PM_CTRL_SERDES_PD_EX_L1; |
| 1226 | |
| 1227 | pm_ctrl_data |= PM_CTRL_SERDES_BUDS_RX_L1_EN; |
| 1228 | pm_ctrl_data |= PM_CTRL_SERDES_PLL_L1_EN; |
| 1229 | pm_ctrl_data |= PM_CTRL_SERDES_L1_EN; |
| 1230 | AT_WRITE_REG(hw, REG_PM_CTRL, pm_ctrl_data); |
| 1231 | } |
| 1232 | |
| 1233 | /* |
| 1234 | * Set ASPM state. |
| 1235 | * Enable/disable L0s/L1 depend on link state. |
| 1236 | */ |
| 1237 | static void atl1c_set_aspm(struct atl1c_hw *hw, bool linkup) |
| 1238 | { |
| 1239 | u32 pm_ctrl_data; |
| 1240 | |
| 1241 | AT_READ_REG(hw, REG_PM_CTRL, &pm_ctrl_data); |
| 1242 | |
Jie Yang | 52fbc10 | 2009-04-27 19:42:03 +0000 | [diff] [blame] | 1243 | pm_ctrl_data &= ~PM_CTRL_SERDES_PD_EX_L1; |
Jie Yang | 43250dd | 2009-02-18 17:24:15 -0800 | [diff] [blame] | 1244 | pm_ctrl_data &= ~(PM_CTRL_L1_ENTRY_TIMER_MASK << |
| 1245 | PM_CTRL_L1_ENTRY_TIMER_SHIFT); |
| 1246 | |
| 1247 | pm_ctrl_data |= PM_CTRL_MAC_ASPM_CHK; |
| 1248 | |
| 1249 | if (linkup) { |
| 1250 | pm_ctrl_data |= PM_CTRL_SERDES_PLL_L1_EN; |
| 1251 | pm_ctrl_data &= ~PM_CTRL_CLK_SWH_L1; |
| 1252 | |
Jie Yang | 52fbc10 | 2009-04-27 19:42:03 +0000 | [diff] [blame] | 1253 | pm_ctrl_data |= PM_CTRL_SERDES_BUDS_RX_L1_EN; |
| 1254 | pm_ctrl_data |= PM_CTRL_SERDES_L1_EN; |
Jie Yang | 43250dd | 2009-02-18 17:24:15 -0800 | [diff] [blame] | 1255 | } else { |
Jie Yang | 52fbc10 | 2009-04-27 19:42:03 +0000 | [diff] [blame] | 1256 | pm_ctrl_data &= ~PM_CTRL_SERDES_BUDS_RX_L1_EN; |
| 1257 | pm_ctrl_data &= ~PM_CTRL_SERDES_L1_EN; |
Jie Yang | 43250dd | 2009-02-18 17:24:15 -0800 | [diff] [blame] | 1258 | pm_ctrl_data &= ~PM_CTRL_ASPM_L0S_EN; |
| 1259 | pm_ctrl_data &= ~PM_CTRL_SERDES_PLL_L1_EN; |
| 1260 | |
| 1261 | pm_ctrl_data |= PM_CTRL_CLK_SWH_L1; |
| 1262 | |
| 1263 | if (hw->ctrl_flags & ATL1C_ASPM_L1_SUPPORT) |
| 1264 | pm_ctrl_data |= PM_CTRL_ASPM_L1_EN; |
| 1265 | else |
| 1266 | pm_ctrl_data &= ~PM_CTRL_ASPM_L1_EN; |
| 1267 | } |
| 1268 | |
| 1269 | AT_WRITE_REG(hw, REG_PM_CTRL, pm_ctrl_data); |
| 1270 | } |
| 1271 | |
| 1272 | static void atl1c_setup_mac_ctrl(struct atl1c_adapter *adapter) |
| 1273 | { |
| 1274 | struct atl1c_hw *hw = &adapter->hw; |
| 1275 | struct net_device *netdev = adapter->netdev; |
| 1276 | u32 mac_ctrl_data; |
| 1277 | |
| 1278 | mac_ctrl_data = MAC_CTRL_TX_EN | MAC_CTRL_RX_EN; |
| 1279 | mac_ctrl_data |= (MAC_CTRL_TX_FLOW | MAC_CTRL_RX_FLOW); |
| 1280 | |
| 1281 | if (adapter->link_duplex == FULL_DUPLEX) { |
| 1282 | hw->mac_duplex = true; |
| 1283 | mac_ctrl_data |= MAC_CTRL_DUPLX; |
| 1284 | } |
| 1285 | |
| 1286 | if (adapter->link_speed == SPEED_1000) |
| 1287 | hw->mac_speed = atl1c_mac_speed_1000; |
| 1288 | else |
| 1289 | hw->mac_speed = atl1c_mac_speed_10_100; |
| 1290 | |
| 1291 | mac_ctrl_data |= (hw->mac_speed & MAC_CTRL_SPEED_MASK) << |
| 1292 | MAC_CTRL_SPEED_SHIFT; |
| 1293 | |
| 1294 | mac_ctrl_data |= (MAC_CTRL_ADD_CRC | MAC_CTRL_PAD); |
| 1295 | mac_ctrl_data |= ((hw->preamble_len & MAC_CTRL_PRMLEN_MASK) << |
| 1296 | MAC_CTRL_PRMLEN_SHIFT); |
| 1297 | |
| 1298 | if (adapter->vlgrp) |
| 1299 | mac_ctrl_data |= MAC_CTRL_RMV_VLAN; |
| 1300 | |
| 1301 | mac_ctrl_data |= MAC_CTRL_BC_EN; |
| 1302 | if (netdev->flags & IFF_PROMISC) |
| 1303 | mac_ctrl_data |= MAC_CTRL_PROMIS_EN; |
| 1304 | if (netdev->flags & IFF_ALLMULTI) |
| 1305 | mac_ctrl_data |= MAC_CTRL_MC_ALL_EN; |
| 1306 | |
| 1307 | mac_ctrl_data |= MAC_CTRL_SINGLE_PAUSE_EN; |
| 1308 | AT_WRITE_REG(hw, REG_MAC_CTRL, mac_ctrl_data); |
| 1309 | } |
| 1310 | |
| 1311 | /* |
| 1312 | * atl1c_configure - Configure Transmit&Receive Unit after Reset |
| 1313 | * @adapter: board private structure |
| 1314 | * |
| 1315 | * Configure the Tx /Rx unit of the MAC after a reset. |
| 1316 | */ |
| 1317 | static int atl1c_configure(struct atl1c_adapter *adapter) |
| 1318 | { |
| 1319 | struct atl1c_hw *hw = &adapter->hw; |
| 1320 | u32 master_ctrl_data = 0; |
| 1321 | u32 intr_modrt_data; |
| 1322 | |
| 1323 | /* clear interrupt status */ |
| 1324 | AT_WRITE_REG(hw, REG_ISR, 0xFFFFFFFF); |
| 1325 | /* Clear any WOL status */ |
| 1326 | AT_WRITE_REG(hw, REG_WOL_CTRL, 0); |
| 1327 | /* set Interrupt Clear Timer |
| 1328 | * HW will enable self to assert interrupt event to system after |
| 1329 | * waiting x-time for software to notify it accept interrupt. |
| 1330 | */ |
| 1331 | AT_WRITE_REG(hw, REG_INT_RETRIG_TIMER, |
| 1332 | hw->ict & INT_RETRIG_TIMER_MASK); |
| 1333 | |
| 1334 | atl1c_configure_des_ring(adapter); |
| 1335 | |
| 1336 | if (hw->ctrl_flags & ATL1C_INTR_MODRT_ENABLE) { |
| 1337 | intr_modrt_data = (hw->tx_imt & IRQ_MODRT_TIMER_MASK) << |
| 1338 | IRQ_MODRT_TX_TIMER_SHIFT; |
| 1339 | intr_modrt_data |= (hw->rx_imt & IRQ_MODRT_TIMER_MASK) << |
| 1340 | IRQ_MODRT_RX_TIMER_SHIFT; |
| 1341 | AT_WRITE_REG(hw, REG_IRQ_MODRT_TIMER_INIT, intr_modrt_data); |
| 1342 | master_ctrl_data |= |
| 1343 | MASTER_CTRL_TX_ITIMER_EN | MASTER_CTRL_RX_ITIMER_EN; |
| 1344 | } |
| 1345 | |
| 1346 | if (hw->ctrl_flags & ATL1C_INTR_CLEAR_ON_READ) |
| 1347 | master_ctrl_data |= MASTER_CTRL_INT_RDCLR; |
| 1348 | |
| 1349 | AT_WRITE_REG(hw, REG_MASTER_CTRL, master_ctrl_data); |
| 1350 | |
| 1351 | if (hw->ctrl_flags & ATL1C_CMB_ENABLE) { |
| 1352 | AT_WRITE_REG(hw, REG_CMB_TPD_THRESH, |
| 1353 | hw->cmb_tpd & CMB_TPD_THRESH_MASK); |
| 1354 | AT_WRITE_REG(hw, REG_CMB_TX_TIMER, |
| 1355 | hw->cmb_tx_timer & CMB_TX_TIMER_MASK); |
| 1356 | } |
| 1357 | |
| 1358 | if (hw->ctrl_flags & ATL1C_SMB_ENABLE) |
| 1359 | AT_WRITE_REG(hw, REG_SMB_STAT_TIMER, |
| 1360 | hw->smb_timer & SMB_STAT_TIMER_MASK); |
| 1361 | /* set MTU */ |
| 1362 | AT_WRITE_REG(hw, REG_MTU, hw->max_frame_size + ETH_HLEN + |
| 1363 | VLAN_HLEN + ETH_FCS_LEN); |
| 1364 | /* HDS, disable */ |
| 1365 | AT_WRITE_REG(hw, REG_HDS_CTRL, 0); |
| 1366 | |
| 1367 | atl1c_configure_tx(adapter); |
| 1368 | atl1c_configure_rx(adapter); |
| 1369 | atl1c_configure_rss(adapter); |
| 1370 | atl1c_configure_dma(adapter); |
| 1371 | |
| 1372 | return 0; |
| 1373 | } |
| 1374 | |
| 1375 | static void atl1c_update_hw_stats(struct atl1c_adapter *adapter) |
| 1376 | { |
| 1377 | u16 hw_reg_addr = 0; |
| 1378 | unsigned long *stats_item = NULL; |
| 1379 | u32 data; |
| 1380 | |
| 1381 | /* update rx status */ |
| 1382 | hw_reg_addr = REG_MAC_RX_STATUS_BIN; |
| 1383 | stats_item = &adapter->hw_stats.rx_ok; |
| 1384 | while (hw_reg_addr <= REG_MAC_RX_STATUS_END) { |
| 1385 | AT_READ_REG(&adapter->hw, hw_reg_addr, &data); |
| 1386 | *stats_item += data; |
| 1387 | stats_item++; |
| 1388 | hw_reg_addr += 4; |
| 1389 | } |
| 1390 | /* update tx status */ |
| 1391 | hw_reg_addr = REG_MAC_TX_STATUS_BIN; |
| 1392 | stats_item = &adapter->hw_stats.tx_ok; |
| 1393 | while (hw_reg_addr <= REG_MAC_TX_STATUS_END) { |
| 1394 | AT_READ_REG(&adapter->hw, hw_reg_addr, &data); |
| 1395 | *stats_item += data; |
| 1396 | stats_item++; |
| 1397 | hw_reg_addr += 4; |
| 1398 | } |
| 1399 | } |
| 1400 | |
| 1401 | /* |
| 1402 | * atl1c_get_stats - Get System Network Statistics |
| 1403 | * @netdev: network interface device structure |
| 1404 | * |
| 1405 | * Returns the address of the device statistics structure. |
| 1406 | * The statistics are actually updated from the timer callback. |
| 1407 | */ |
| 1408 | static struct net_device_stats *atl1c_get_stats(struct net_device *netdev) |
| 1409 | { |
| 1410 | struct atl1c_adapter *adapter = netdev_priv(netdev); |
| 1411 | struct atl1c_hw_stats *hw_stats = &adapter->hw_stats; |
| 1412 | struct net_device_stats *net_stats = &adapter->net_stats; |
| 1413 | |
| 1414 | atl1c_update_hw_stats(adapter); |
| 1415 | net_stats->rx_packets = hw_stats->rx_ok; |
| 1416 | net_stats->tx_packets = hw_stats->tx_ok; |
| 1417 | net_stats->rx_bytes = hw_stats->rx_byte_cnt; |
| 1418 | net_stats->tx_bytes = hw_stats->tx_byte_cnt; |
| 1419 | net_stats->multicast = hw_stats->rx_mcast; |
| 1420 | net_stats->collisions = hw_stats->tx_1_col + |
| 1421 | hw_stats->tx_2_col * 2 + |
| 1422 | hw_stats->tx_late_col + hw_stats->tx_abort_col; |
| 1423 | net_stats->rx_errors = hw_stats->rx_frag + hw_stats->rx_fcs_err + |
| 1424 | hw_stats->rx_len_err + hw_stats->rx_sz_ov + |
| 1425 | hw_stats->rx_rrd_ov + hw_stats->rx_align_err; |
| 1426 | net_stats->rx_fifo_errors = hw_stats->rx_rxf_ov; |
| 1427 | net_stats->rx_length_errors = hw_stats->rx_len_err; |
| 1428 | net_stats->rx_crc_errors = hw_stats->rx_fcs_err; |
| 1429 | net_stats->rx_frame_errors = hw_stats->rx_align_err; |
| 1430 | net_stats->rx_over_errors = hw_stats->rx_rrd_ov + hw_stats->rx_rxf_ov; |
| 1431 | |
| 1432 | net_stats->rx_missed_errors = hw_stats->rx_rrd_ov + hw_stats->rx_rxf_ov; |
| 1433 | |
| 1434 | net_stats->tx_errors = hw_stats->tx_late_col + hw_stats->tx_abort_col + |
| 1435 | hw_stats->tx_underrun + hw_stats->tx_trunc; |
| 1436 | net_stats->tx_fifo_errors = hw_stats->tx_underrun; |
| 1437 | net_stats->tx_aborted_errors = hw_stats->tx_abort_col; |
| 1438 | net_stats->tx_window_errors = hw_stats->tx_late_col; |
| 1439 | |
| 1440 | return &adapter->net_stats; |
| 1441 | } |
| 1442 | |
| 1443 | static inline void atl1c_clear_phy_int(struct atl1c_adapter *adapter) |
| 1444 | { |
| 1445 | u16 phy_data; |
| 1446 | |
| 1447 | spin_lock(&adapter->mdio_lock); |
| 1448 | atl1c_read_phy_reg(&adapter->hw, MII_ISR, &phy_data); |
| 1449 | spin_unlock(&adapter->mdio_lock); |
| 1450 | } |
| 1451 | |
| 1452 | static bool atl1c_clean_tx_irq(struct atl1c_adapter *adapter, |
| 1453 | enum atl1c_trans_queue type) |
| 1454 | { |
| 1455 | struct atl1c_tpd_ring *tpd_ring = (struct atl1c_tpd_ring *) |
| 1456 | &adapter->tpd_ring[type]; |
| 1457 | struct atl1c_buffer *buffer_info; |
| 1458 | u16 next_to_clean = atomic_read(&tpd_ring->next_to_clean); |
| 1459 | u16 hw_next_to_clean; |
| 1460 | u16 shift; |
| 1461 | u32 data; |
| 1462 | |
| 1463 | if (type == atl1c_trans_high) |
| 1464 | shift = MB_HTPD_CONS_IDX_SHIFT; |
| 1465 | else |
| 1466 | shift = MB_NTPD_CONS_IDX_SHIFT; |
| 1467 | |
| 1468 | AT_READ_REG(&adapter->hw, REG_MB_PRIO_CONS_IDX, &data); |
| 1469 | hw_next_to_clean = (data >> shift) & MB_PRIO_PROD_IDX_MASK; |
| 1470 | |
| 1471 | while (next_to_clean != hw_next_to_clean) { |
| 1472 | buffer_info = &tpd_ring->buffer_info[next_to_clean]; |
| 1473 | if (buffer_info->state == ATL1_BUFFER_BUSY) { |
| 1474 | pci_unmap_page(adapter->pdev, buffer_info->dma, |
| 1475 | buffer_info->length, PCI_DMA_TODEVICE); |
| 1476 | buffer_info->dma = 0; |
| 1477 | if (buffer_info->skb) { |
| 1478 | dev_kfree_skb_irq(buffer_info->skb); |
| 1479 | buffer_info->skb = NULL; |
| 1480 | } |
| 1481 | buffer_info->state = ATL1_BUFFER_FREE; |
| 1482 | } |
| 1483 | if (++next_to_clean == tpd_ring->count) |
| 1484 | next_to_clean = 0; |
| 1485 | atomic_set(&tpd_ring->next_to_clean, next_to_clean); |
| 1486 | } |
| 1487 | |
| 1488 | if (netif_queue_stopped(adapter->netdev) && |
| 1489 | netif_carrier_ok(adapter->netdev)) { |
| 1490 | netif_wake_queue(adapter->netdev); |
| 1491 | } |
| 1492 | |
| 1493 | return true; |
| 1494 | } |
| 1495 | |
| 1496 | /* |
| 1497 | * atl1c_intr - Interrupt Handler |
| 1498 | * @irq: interrupt number |
| 1499 | * @data: pointer to a network interface device structure |
| 1500 | * @pt_regs: CPU registers structure |
| 1501 | */ |
| 1502 | static irqreturn_t atl1c_intr(int irq, void *data) |
| 1503 | { |
| 1504 | struct net_device *netdev = data; |
| 1505 | struct atl1c_adapter *adapter = netdev_priv(netdev); |
| 1506 | struct pci_dev *pdev = adapter->pdev; |
| 1507 | struct atl1c_hw *hw = &adapter->hw; |
| 1508 | int max_ints = AT_MAX_INT_WORK; |
| 1509 | int handled = IRQ_NONE; |
| 1510 | u32 status; |
| 1511 | u32 reg_data; |
| 1512 | |
| 1513 | do { |
| 1514 | AT_READ_REG(hw, REG_ISR, ®_data); |
| 1515 | status = reg_data & hw->intr_mask; |
| 1516 | |
| 1517 | if (status == 0 || (status & ISR_DIS_INT) != 0) { |
| 1518 | if (max_ints != AT_MAX_INT_WORK) |
| 1519 | handled = IRQ_HANDLED; |
| 1520 | break; |
| 1521 | } |
| 1522 | /* link event */ |
| 1523 | if (status & ISR_GPHY) |
| 1524 | atl1c_clear_phy_int(adapter); |
| 1525 | /* Ack ISR */ |
| 1526 | AT_WRITE_REG(hw, REG_ISR, status | ISR_DIS_INT); |
| 1527 | if (status & ISR_RX_PKT) { |
| 1528 | if (likely(napi_schedule_prep(&adapter->napi))) { |
| 1529 | hw->intr_mask &= ~ISR_RX_PKT; |
| 1530 | AT_WRITE_REG(hw, REG_IMR, hw->intr_mask); |
| 1531 | __napi_schedule(&adapter->napi); |
| 1532 | } |
| 1533 | } |
| 1534 | if (status & ISR_TX_PKT) |
| 1535 | atl1c_clean_tx_irq(adapter, atl1c_trans_normal); |
| 1536 | |
| 1537 | handled = IRQ_HANDLED; |
| 1538 | /* check if PCIE PHY Link down */ |
| 1539 | if (status & ISR_ERROR) { |
| 1540 | if (netif_msg_hw(adapter)) |
| 1541 | dev_err(&pdev->dev, |
| 1542 | "atl1c hardware error (status = 0x%x)\n", |
| 1543 | status & ISR_ERROR); |
| 1544 | /* reset MAC */ |
| 1545 | hw->intr_mask &= ~ISR_ERROR; |
| 1546 | AT_WRITE_REG(hw, REG_IMR, hw->intr_mask); |
| 1547 | schedule_work(&adapter->reset_task); |
| 1548 | break; |
| 1549 | } |
| 1550 | |
| 1551 | if (status & ISR_OVER) |
| 1552 | if (netif_msg_intr(adapter)) |
| 1553 | dev_warn(&pdev->dev, |
| 1554 | "TX/RX over flow (status = 0x%x)\n", |
| 1555 | status & ISR_OVER); |
| 1556 | |
| 1557 | /* link event */ |
| 1558 | if (status & (ISR_GPHY | ISR_MANUAL)) { |
| 1559 | adapter->net_stats.tx_carrier_errors++; |
| 1560 | atl1c_link_chg_event(adapter); |
| 1561 | break; |
| 1562 | } |
| 1563 | |
| 1564 | } while (--max_ints > 0); |
| 1565 | /* re-enable Interrupt*/ |
| 1566 | AT_WRITE_REG(&adapter->hw, REG_ISR, 0); |
| 1567 | return handled; |
| 1568 | } |
| 1569 | |
| 1570 | static inline void atl1c_rx_checksum(struct atl1c_adapter *adapter, |
| 1571 | struct sk_buff *skb, struct atl1c_recv_ret_status *prrs) |
| 1572 | { |
| 1573 | /* |
| 1574 | * The pid field in RRS in not correct sometimes, so we |
| 1575 | * cannot figure out if the packet is fragmented or not, |
| 1576 | * so we tell the KERNEL CHECKSUM_NONE |
| 1577 | */ |
| 1578 | skb->ip_summed = CHECKSUM_NONE; |
| 1579 | } |
| 1580 | |
| 1581 | static int atl1c_alloc_rx_buffer(struct atl1c_adapter *adapter, const int ringid) |
| 1582 | { |
| 1583 | struct atl1c_rfd_ring *rfd_ring = &adapter->rfd_ring[ringid]; |
| 1584 | struct pci_dev *pdev = adapter->pdev; |
| 1585 | struct atl1c_buffer *buffer_info, *next_info; |
| 1586 | struct sk_buff *skb; |
| 1587 | void *vir_addr = NULL; |
| 1588 | u16 num_alloc = 0; |
| 1589 | u16 rfd_next_to_use, next_next; |
| 1590 | struct atl1c_rx_free_desc *rfd_desc; |
| 1591 | |
| 1592 | next_next = rfd_next_to_use = rfd_ring->next_to_use; |
| 1593 | if (++next_next == rfd_ring->count) |
| 1594 | next_next = 0; |
| 1595 | buffer_info = &rfd_ring->buffer_info[rfd_next_to_use]; |
| 1596 | next_info = &rfd_ring->buffer_info[next_next]; |
| 1597 | |
| 1598 | while (next_info->state == ATL1_BUFFER_FREE) { |
| 1599 | rfd_desc = ATL1C_RFD_DESC(rfd_ring, rfd_next_to_use); |
| 1600 | |
| 1601 | skb = dev_alloc_skb(adapter->rx_buffer_len); |
| 1602 | if (unlikely(!skb)) { |
| 1603 | if (netif_msg_rx_err(adapter)) |
| 1604 | dev_warn(&pdev->dev, "alloc rx buffer failed\n"); |
| 1605 | break; |
| 1606 | } |
| 1607 | |
| 1608 | /* |
| 1609 | * Make buffer alignment 2 beyond a 16 byte boundary |
| 1610 | * this will result in a 16 byte aligned IP header after |
| 1611 | * the 14 byte MAC header is removed |
| 1612 | */ |
| 1613 | vir_addr = skb->data; |
| 1614 | buffer_info->state = ATL1_BUFFER_BUSY; |
| 1615 | buffer_info->skb = skb; |
| 1616 | buffer_info->length = adapter->rx_buffer_len; |
| 1617 | buffer_info->dma = pci_map_single(pdev, vir_addr, |
| 1618 | buffer_info->length, |
| 1619 | PCI_DMA_FROMDEVICE); |
| 1620 | rfd_desc->buffer_addr = cpu_to_le64(buffer_info->dma); |
| 1621 | rfd_next_to_use = next_next; |
| 1622 | if (++next_next == rfd_ring->count) |
| 1623 | next_next = 0; |
| 1624 | buffer_info = &rfd_ring->buffer_info[rfd_next_to_use]; |
| 1625 | next_info = &rfd_ring->buffer_info[next_next]; |
| 1626 | num_alloc++; |
| 1627 | } |
| 1628 | |
| 1629 | if (num_alloc) { |
| 1630 | /* TODO: update mailbox here */ |
| 1631 | wmb(); |
| 1632 | rfd_ring->next_to_use = rfd_next_to_use; |
| 1633 | AT_WRITE_REG(&adapter->hw, atl1c_rfd_prod_idx_regs[ringid], |
| 1634 | rfd_ring->next_to_use & MB_RFDX_PROD_IDX_MASK); |
| 1635 | } |
| 1636 | |
| 1637 | return num_alloc; |
| 1638 | } |
| 1639 | |
| 1640 | static void atl1c_clean_rrd(struct atl1c_rrd_ring *rrd_ring, |
| 1641 | struct atl1c_recv_ret_status *rrs, u16 num) |
| 1642 | { |
| 1643 | u16 i; |
| 1644 | /* the relationship between rrd and rfd is one map one */ |
| 1645 | for (i = 0; i < num; i++, rrs = ATL1C_RRD_DESC(rrd_ring, |
| 1646 | rrd_ring->next_to_clean)) { |
| 1647 | rrs->word3 &= ~RRS_RXD_UPDATED; |
| 1648 | if (++rrd_ring->next_to_clean == rrd_ring->count) |
| 1649 | rrd_ring->next_to_clean = 0; |
| 1650 | } |
| 1651 | } |
| 1652 | |
| 1653 | static void atl1c_clean_rfd(struct atl1c_rfd_ring *rfd_ring, |
| 1654 | struct atl1c_recv_ret_status *rrs, u16 num) |
| 1655 | { |
| 1656 | u16 i; |
| 1657 | u16 rfd_index; |
| 1658 | struct atl1c_buffer *buffer_info = rfd_ring->buffer_info; |
| 1659 | |
| 1660 | rfd_index = (rrs->word0 >> RRS_RX_RFD_INDEX_SHIFT) & |
| 1661 | RRS_RX_RFD_INDEX_MASK; |
| 1662 | for (i = 0; i < num; i++) { |
| 1663 | buffer_info[rfd_index].skb = NULL; |
| 1664 | buffer_info[rfd_index].state = ATL1_BUFFER_FREE; |
| 1665 | if (++rfd_index == rfd_ring->count) |
| 1666 | rfd_index = 0; |
| 1667 | } |
| 1668 | rfd_ring->next_to_clean = rfd_index; |
| 1669 | } |
| 1670 | |
| 1671 | static void atl1c_clean_rx_irq(struct atl1c_adapter *adapter, u8 que, |
| 1672 | int *work_done, int work_to_do) |
| 1673 | { |
| 1674 | u16 rfd_num, rfd_index; |
| 1675 | u16 count = 0; |
| 1676 | u16 length; |
| 1677 | struct pci_dev *pdev = adapter->pdev; |
| 1678 | struct net_device *netdev = adapter->netdev; |
| 1679 | struct atl1c_rfd_ring *rfd_ring = &adapter->rfd_ring[que]; |
| 1680 | struct atl1c_rrd_ring *rrd_ring = &adapter->rrd_ring[que]; |
| 1681 | struct sk_buff *skb; |
| 1682 | struct atl1c_recv_ret_status *rrs; |
| 1683 | struct atl1c_buffer *buffer_info; |
| 1684 | |
| 1685 | while (1) { |
| 1686 | if (*work_done >= work_to_do) |
| 1687 | break; |
| 1688 | rrs = ATL1C_RRD_DESC(rrd_ring, rrd_ring->next_to_clean); |
| 1689 | if (likely(RRS_RXD_IS_VALID(rrs->word3))) { |
| 1690 | rfd_num = (rrs->word0 >> RRS_RX_RFD_CNT_SHIFT) & |
| 1691 | RRS_RX_RFD_CNT_MASK; |
roel kluin | 37b76c6 | 2009-07-12 12:57:38 +0000 | [diff] [blame] | 1692 | if (unlikely(rfd_num != 1)) |
Jie Yang | 43250dd | 2009-02-18 17:24:15 -0800 | [diff] [blame] | 1693 | /* TODO support mul rfd*/ |
| 1694 | if (netif_msg_rx_err(adapter)) |
| 1695 | dev_warn(&pdev->dev, |
| 1696 | "Multi rfd not support yet!\n"); |
| 1697 | goto rrs_checked; |
| 1698 | } else { |
| 1699 | break; |
| 1700 | } |
| 1701 | rrs_checked: |
| 1702 | atl1c_clean_rrd(rrd_ring, rrs, rfd_num); |
| 1703 | if (rrs->word3 & (RRS_RX_ERR_SUM | RRS_802_3_LEN_ERR)) { |
| 1704 | atl1c_clean_rfd(rfd_ring, rrs, rfd_num); |
| 1705 | if (netif_msg_rx_err(adapter)) |
| 1706 | dev_warn(&pdev->dev, |
| 1707 | "wrong packet! rrs word3 is %x\n", |
| 1708 | rrs->word3); |
| 1709 | continue; |
| 1710 | } |
| 1711 | |
| 1712 | length = le16_to_cpu((rrs->word3 >> RRS_PKT_SIZE_SHIFT) & |
| 1713 | RRS_PKT_SIZE_MASK); |
| 1714 | /* Good Receive */ |
| 1715 | if (likely(rfd_num == 1)) { |
| 1716 | rfd_index = (rrs->word0 >> RRS_RX_RFD_INDEX_SHIFT) & |
| 1717 | RRS_RX_RFD_INDEX_MASK; |
| 1718 | buffer_info = &rfd_ring->buffer_info[rfd_index]; |
| 1719 | pci_unmap_single(pdev, buffer_info->dma, |
| 1720 | buffer_info->length, PCI_DMA_FROMDEVICE); |
| 1721 | skb = buffer_info->skb; |
| 1722 | } else { |
| 1723 | /* TODO */ |
| 1724 | if (netif_msg_rx_err(adapter)) |
| 1725 | dev_warn(&pdev->dev, |
| 1726 | "Multi rfd not support yet!\n"); |
| 1727 | break; |
| 1728 | } |
| 1729 | atl1c_clean_rfd(rfd_ring, rrs, rfd_num); |
| 1730 | skb_put(skb, length - ETH_FCS_LEN); |
| 1731 | skb->protocol = eth_type_trans(skb, netdev); |
| 1732 | skb->dev = netdev; |
| 1733 | atl1c_rx_checksum(adapter, skb, rrs); |
| 1734 | if (unlikely(adapter->vlgrp) && rrs->word3 & RRS_VLAN_INS) { |
| 1735 | u16 vlan; |
| 1736 | |
| 1737 | AT_TAG_TO_VLAN(rrs->vlan_tag, vlan); |
| 1738 | vlan = le16_to_cpu(vlan); |
| 1739 | vlan_hwaccel_receive_skb(skb, adapter->vlgrp, vlan); |
| 1740 | } else |
| 1741 | netif_receive_skb(skb); |
| 1742 | |
| 1743 | netdev->last_rx = jiffies; |
| 1744 | (*work_done)++; |
| 1745 | count++; |
| 1746 | } |
| 1747 | if (count) |
| 1748 | atl1c_alloc_rx_buffer(adapter, que); |
| 1749 | } |
| 1750 | |
| 1751 | /* |
| 1752 | * atl1c_clean - NAPI Rx polling callback |
| 1753 | * @adapter: board private structure |
| 1754 | */ |
| 1755 | static int atl1c_clean(struct napi_struct *napi, int budget) |
| 1756 | { |
| 1757 | struct atl1c_adapter *adapter = |
| 1758 | container_of(napi, struct atl1c_adapter, napi); |
| 1759 | int work_done = 0; |
| 1760 | |
| 1761 | /* Keep link state information with original netdev */ |
| 1762 | if (!netif_carrier_ok(adapter->netdev)) |
| 1763 | goto quit_polling; |
| 1764 | /* just enable one RXQ */ |
| 1765 | atl1c_clean_rx_irq(adapter, 0, &work_done, budget); |
| 1766 | |
| 1767 | if (work_done < budget) { |
| 1768 | quit_polling: |
| 1769 | napi_complete(napi); |
| 1770 | adapter->hw.intr_mask |= ISR_RX_PKT; |
| 1771 | AT_WRITE_REG(&adapter->hw, REG_IMR, adapter->hw.intr_mask); |
| 1772 | } |
| 1773 | return work_done; |
| 1774 | } |
| 1775 | |
| 1776 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 1777 | |
| 1778 | /* |
| 1779 | * Polling 'interrupt' - used by things like netconsole to send skbs |
| 1780 | * without having to re-enable interrupts. It's not called while |
| 1781 | * the interrupt routine is executing. |
| 1782 | */ |
| 1783 | static void atl1c_netpoll(struct net_device *netdev) |
| 1784 | { |
| 1785 | struct atl1c_adapter *adapter = netdev_priv(netdev); |
| 1786 | |
| 1787 | disable_irq(adapter->pdev->irq); |
| 1788 | atl1c_intr(adapter->pdev->irq, netdev); |
| 1789 | enable_irq(adapter->pdev->irq); |
| 1790 | } |
| 1791 | #endif |
| 1792 | |
| 1793 | static inline u16 atl1c_tpd_avail(struct atl1c_adapter *adapter, enum atl1c_trans_queue type) |
| 1794 | { |
| 1795 | struct atl1c_tpd_ring *tpd_ring = &adapter->tpd_ring[type]; |
| 1796 | u16 next_to_use = 0; |
| 1797 | u16 next_to_clean = 0; |
| 1798 | |
| 1799 | next_to_clean = atomic_read(&tpd_ring->next_to_clean); |
| 1800 | next_to_use = tpd_ring->next_to_use; |
| 1801 | |
| 1802 | return (u16)(next_to_clean > next_to_use) ? |
| 1803 | (next_to_clean - next_to_use - 1) : |
| 1804 | (tpd_ring->count + next_to_clean - next_to_use - 1); |
| 1805 | } |
| 1806 | |
| 1807 | /* |
| 1808 | * get next usable tpd |
| 1809 | * Note: should call atl1c_tdp_avail to make sure |
| 1810 | * there is enough tpd to use |
| 1811 | */ |
| 1812 | static struct atl1c_tpd_desc *atl1c_get_tpd(struct atl1c_adapter *adapter, |
| 1813 | enum atl1c_trans_queue type) |
| 1814 | { |
| 1815 | struct atl1c_tpd_ring *tpd_ring = &adapter->tpd_ring[type]; |
| 1816 | struct atl1c_tpd_desc *tpd_desc; |
| 1817 | u16 next_to_use = 0; |
| 1818 | |
| 1819 | next_to_use = tpd_ring->next_to_use; |
| 1820 | if (++tpd_ring->next_to_use == tpd_ring->count) |
| 1821 | tpd_ring->next_to_use = 0; |
| 1822 | tpd_desc = ATL1C_TPD_DESC(tpd_ring, next_to_use); |
| 1823 | memset(tpd_desc, 0, sizeof(struct atl1c_tpd_desc)); |
| 1824 | return tpd_desc; |
| 1825 | } |
| 1826 | |
| 1827 | static struct atl1c_buffer * |
| 1828 | atl1c_get_tx_buffer(struct atl1c_adapter *adapter, struct atl1c_tpd_desc *tpd) |
| 1829 | { |
| 1830 | struct atl1c_tpd_ring *tpd_ring = adapter->tpd_ring; |
| 1831 | |
| 1832 | return &tpd_ring->buffer_info[tpd - |
| 1833 | (struct atl1c_tpd_desc *)tpd_ring->desc]; |
| 1834 | } |
| 1835 | |
| 1836 | /* Calculate the transmit packet descript needed*/ |
| 1837 | static u16 atl1c_cal_tpd_req(const struct sk_buff *skb) |
| 1838 | { |
| 1839 | u16 tpd_req; |
| 1840 | u16 proto_hdr_len = 0; |
| 1841 | |
| 1842 | tpd_req = skb_shinfo(skb)->nr_frags + 1; |
| 1843 | |
| 1844 | if (skb_is_gso(skb)) { |
| 1845 | proto_hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
| 1846 | if (proto_hdr_len < skb_headlen(skb)) |
| 1847 | tpd_req++; |
| 1848 | if (skb_shinfo(skb)->gso_type & SKB_GSO_TCPV6) |
| 1849 | tpd_req++; |
| 1850 | } |
| 1851 | return tpd_req; |
| 1852 | } |
| 1853 | |
| 1854 | static int atl1c_tso_csum(struct atl1c_adapter *adapter, |
| 1855 | struct sk_buff *skb, |
| 1856 | struct atl1c_tpd_desc **tpd, |
| 1857 | enum atl1c_trans_queue type) |
| 1858 | { |
| 1859 | struct pci_dev *pdev = adapter->pdev; |
| 1860 | u8 hdr_len; |
| 1861 | u32 real_len; |
| 1862 | unsigned short offload_type; |
| 1863 | int err; |
| 1864 | |
| 1865 | if (skb_is_gso(skb)) { |
| 1866 | if (skb_header_cloned(skb)) { |
| 1867 | err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); |
| 1868 | if (unlikely(err)) |
| 1869 | return -1; |
| 1870 | } |
| 1871 | offload_type = skb_shinfo(skb)->gso_type; |
| 1872 | |
| 1873 | if (offload_type & SKB_GSO_TCPV4) { |
| 1874 | real_len = (((unsigned char *)ip_hdr(skb) - skb->data) |
| 1875 | + ntohs(ip_hdr(skb)->tot_len)); |
| 1876 | |
| 1877 | if (real_len < skb->len) |
| 1878 | pskb_trim(skb, real_len); |
| 1879 | |
| 1880 | hdr_len = (skb_transport_offset(skb) + tcp_hdrlen(skb)); |
| 1881 | if (unlikely(skb->len == hdr_len)) { |
| 1882 | /* only xsum need */ |
| 1883 | if (netif_msg_tx_queued(adapter)) |
| 1884 | dev_warn(&pdev->dev, |
| 1885 | "IPV4 tso with zero data??\n"); |
| 1886 | goto check_sum; |
| 1887 | } else { |
| 1888 | ip_hdr(skb)->check = 0; |
| 1889 | tcp_hdr(skb)->check = ~csum_tcpudp_magic( |
| 1890 | ip_hdr(skb)->saddr, |
| 1891 | ip_hdr(skb)->daddr, |
| 1892 | 0, IPPROTO_TCP, 0); |
| 1893 | (*tpd)->word1 |= 1 << TPD_IPV4_PACKET_SHIFT; |
| 1894 | } |
| 1895 | } |
| 1896 | |
| 1897 | if (offload_type & SKB_GSO_TCPV6) { |
| 1898 | struct atl1c_tpd_ext_desc *etpd = |
| 1899 | *(struct atl1c_tpd_ext_desc **)(tpd); |
| 1900 | |
| 1901 | memset(etpd, 0, sizeof(struct atl1c_tpd_ext_desc)); |
| 1902 | *tpd = atl1c_get_tpd(adapter, type); |
| 1903 | ipv6_hdr(skb)->payload_len = 0; |
| 1904 | /* check payload == 0 byte ? */ |
| 1905 | hdr_len = (skb_transport_offset(skb) + tcp_hdrlen(skb)); |
| 1906 | if (unlikely(skb->len == hdr_len)) { |
| 1907 | /* only xsum need */ |
| 1908 | if (netif_msg_tx_queued(adapter)) |
| 1909 | dev_warn(&pdev->dev, |
| 1910 | "IPV6 tso with zero data??\n"); |
| 1911 | goto check_sum; |
| 1912 | } else |
| 1913 | tcp_hdr(skb)->check = ~csum_ipv6_magic( |
| 1914 | &ipv6_hdr(skb)->saddr, |
| 1915 | &ipv6_hdr(skb)->daddr, |
| 1916 | 0, IPPROTO_TCP, 0); |
| 1917 | etpd->word1 |= 1 << TPD_LSO_EN_SHIFT; |
| 1918 | etpd->word1 |= 1 << TPD_LSO_VER_SHIFT; |
| 1919 | etpd->pkt_len = cpu_to_le32(skb->len); |
| 1920 | (*tpd)->word1 |= 1 << TPD_LSO_VER_SHIFT; |
| 1921 | } |
| 1922 | |
| 1923 | (*tpd)->word1 |= 1 << TPD_LSO_EN_SHIFT; |
| 1924 | (*tpd)->word1 |= (skb_transport_offset(skb) & TPD_TCPHDR_OFFSET_MASK) << |
| 1925 | TPD_TCPHDR_OFFSET_SHIFT; |
| 1926 | (*tpd)->word1 |= (skb_shinfo(skb)->gso_size & TPD_MSS_MASK) << |
| 1927 | TPD_MSS_SHIFT; |
| 1928 | return 0; |
| 1929 | } |
| 1930 | |
| 1931 | check_sum: |
| 1932 | if (likely(skb->ip_summed == CHECKSUM_PARTIAL)) { |
| 1933 | u8 css, cso; |
| 1934 | cso = skb_transport_offset(skb); |
| 1935 | |
| 1936 | if (unlikely(cso & 0x1)) { |
| 1937 | if (netif_msg_tx_err(adapter)) |
| 1938 | dev_err(&adapter->pdev->dev, |
| 1939 | "payload offset should not an event number\n"); |
| 1940 | return -1; |
| 1941 | } else { |
| 1942 | css = cso + skb->csum_offset; |
| 1943 | |
| 1944 | (*tpd)->word1 |= ((cso >> 1) & TPD_PLOADOFFSET_MASK) << |
| 1945 | TPD_PLOADOFFSET_SHIFT; |
| 1946 | (*tpd)->word1 |= ((css >> 1) & TPD_CCSUM_OFFSET_MASK) << |
| 1947 | TPD_CCSUM_OFFSET_SHIFT; |
| 1948 | (*tpd)->word1 |= 1 << TPD_CCSUM_EN_SHIFT; |
| 1949 | } |
| 1950 | } |
| 1951 | return 0; |
| 1952 | } |
| 1953 | |
| 1954 | static void atl1c_tx_map(struct atl1c_adapter *adapter, |
| 1955 | struct sk_buff *skb, struct atl1c_tpd_desc *tpd, |
| 1956 | enum atl1c_trans_queue type) |
| 1957 | { |
| 1958 | struct atl1c_tpd_desc *use_tpd = NULL; |
| 1959 | struct atl1c_buffer *buffer_info = NULL; |
| 1960 | u16 buf_len = skb_headlen(skb); |
| 1961 | u16 map_len = 0; |
| 1962 | u16 mapped_len = 0; |
| 1963 | u16 hdr_len = 0; |
| 1964 | u16 nr_frags; |
| 1965 | u16 f; |
| 1966 | int tso; |
| 1967 | |
| 1968 | nr_frags = skb_shinfo(skb)->nr_frags; |
| 1969 | tso = (tpd->word1 >> TPD_LSO_EN_SHIFT) & TPD_LSO_EN_MASK; |
| 1970 | if (tso) { |
| 1971 | /* TSO */ |
| 1972 | map_len = hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
| 1973 | use_tpd = tpd; |
| 1974 | |
| 1975 | buffer_info = atl1c_get_tx_buffer(adapter, use_tpd); |
| 1976 | buffer_info->length = map_len; |
| 1977 | buffer_info->dma = pci_map_single(adapter->pdev, |
| 1978 | skb->data, hdr_len, PCI_DMA_TODEVICE); |
| 1979 | buffer_info->state = ATL1_BUFFER_BUSY; |
| 1980 | mapped_len += map_len; |
| 1981 | use_tpd->buffer_addr = cpu_to_le64(buffer_info->dma); |
| 1982 | use_tpd->buffer_len = cpu_to_le16(buffer_info->length); |
| 1983 | } |
| 1984 | |
| 1985 | if (mapped_len < buf_len) { |
| 1986 | /* mapped_len == 0, means we should use the first tpd, |
| 1987 | which is given by caller */ |
| 1988 | if (mapped_len == 0) |
| 1989 | use_tpd = tpd; |
| 1990 | else { |
| 1991 | use_tpd = atl1c_get_tpd(adapter, type); |
| 1992 | memcpy(use_tpd, tpd, sizeof(struct atl1c_tpd_desc)); |
| 1993 | use_tpd = atl1c_get_tpd(adapter, type); |
| 1994 | memcpy(use_tpd, tpd, sizeof(struct atl1c_tpd_desc)); |
| 1995 | } |
| 1996 | buffer_info = atl1c_get_tx_buffer(adapter, use_tpd); |
| 1997 | buffer_info->length = buf_len - mapped_len; |
| 1998 | buffer_info->dma = |
| 1999 | pci_map_single(adapter->pdev, skb->data + mapped_len, |
| 2000 | buffer_info->length, PCI_DMA_TODEVICE); |
| 2001 | buffer_info->state = ATL1_BUFFER_BUSY; |
| 2002 | |
| 2003 | use_tpd->buffer_addr = cpu_to_le64(buffer_info->dma); |
| 2004 | use_tpd->buffer_len = cpu_to_le16(buffer_info->length); |
| 2005 | } |
| 2006 | |
| 2007 | for (f = 0; f < nr_frags; f++) { |
| 2008 | struct skb_frag_struct *frag; |
| 2009 | |
| 2010 | frag = &skb_shinfo(skb)->frags[f]; |
| 2011 | |
| 2012 | use_tpd = atl1c_get_tpd(adapter, type); |
| 2013 | memcpy(use_tpd, tpd, sizeof(struct atl1c_tpd_desc)); |
| 2014 | |
| 2015 | buffer_info = atl1c_get_tx_buffer(adapter, use_tpd); |
| 2016 | buffer_info->length = frag->size; |
| 2017 | buffer_info->dma = |
| 2018 | pci_map_page(adapter->pdev, frag->page, |
| 2019 | frag->page_offset, |
| 2020 | buffer_info->length, |
| 2021 | PCI_DMA_TODEVICE); |
| 2022 | buffer_info->state = ATL1_BUFFER_BUSY; |
| 2023 | |
| 2024 | use_tpd->buffer_addr = cpu_to_le64(buffer_info->dma); |
| 2025 | use_tpd->buffer_len = cpu_to_le16(buffer_info->length); |
| 2026 | } |
| 2027 | |
| 2028 | /* The last tpd */ |
| 2029 | use_tpd->word1 |= 1 << TPD_EOP_SHIFT; |
| 2030 | /* The last buffer info contain the skb address, |
| 2031 | so it will be free after unmap */ |
| 2032 | buffer_info->skb = skb; |
| 2033 | } |
| 2034 | |
| 2035 | static void atl1c_tx_queue(struct atl1c_adapter *adapter, struct sk_buff *skb, |
| 2036 | struct atl1c_tpd_desc *tpd, enum atl1c_trans_queue type) |
| 2037 | { |
| 2038 | struct atl1c_tpd_ring *tpd_ring = &adapter->tpd_ring[type]; |
| 2039 | u32 prod_data; |
| 2040 | |
| 2041 | AT_READ_REG(&adapter->hw, REG_MB_PRIO_PROD_IDX, &prod_data); |
| 2042 | switch (type) { |
| 2043 | case atl1c_trans_high: |
| 2044 | prod_data &= 0xFFFF0000; |
| 2045 | prod_data |= tpd_ring->next_to_use & 0xFFFF; |
| 2046 | break; |
| 2047 | case atl1c_trans_normal: |
| 2048 | prod_data &= 0x0000FFFF; |
| 2049 | prod_data |= (tpd_ring->next_to_use & 0xFFFF) << 16; |
| 2050 | break; |
| 2051 | default: |
| 2052 | break; |
| 2053 | } |
| 2054 | wmb(); |
| 2055 | AT_WRITE_REG(&adapter->hw, REG_MB_PRIO_PROD_IDX, prod_data); |
| 2056 | } |
| 2057 | |
Stephen Hemminger | 61357325 | 2009-08-31 19:50:58 +0000 | [diff] [blame^] | 2058 | static netdev_tx_t atl1c_xmit_frame(struct sk_buff *skb, |
| 2059 | struct net_device *netdev) |
Jie Yang | 43250dd | 2009-02-18 17:24:15 -0800 | [diff] [blame] | 2060 | { |
| 2061 | struct atl1c_adapter *adapter = netdev_priv(netdev); |
| 2062 | unsigned long flags; |
| 2063 | u16 tpd_req = 1; |
| 2064 | struct atl1c_tpd_desc *tpd; |
| 2065 | enum atl1c_trans_queue type = atl1c_trans_normal; |
| 2066 | |
| 2067 | if (test_bit(__AT_DOWN, &adapter->flags)) { |
| 2068 | dev_kfree_skb_any(skb); |
| 2069 | return NETDEV_TX_OK; |
| 2070 | } |
| 2071 | |
| 2072 | tpd_req = atl1c_cal_tpd_req(skb); |
| 2073 | if (!spin_trylock_irqsave(&adapter->tx_lock, flags)) { |
| 2074 | if (netif_msg_pktdata(adapter)) |
| 2075 | dev_info(&adapter->pdev->dev, "tx locked\n"); |
| 2076 | return NETDEV_TX_LOCKED; |
| 2077 | } |
| 2078 | if (skb->mark == 0x01) |
| 2079 | type = atl1c_trans_high; |
| 2080 | else |
| 2081 | type = atl1c_trans_normal; |
| 2082 | |
| 2083 | if (atl1c_tpd_avail(adapter, type) < tpd_req) { |
| 2084 | /* no enough descriptor, just stop queue */ |
| 2085 | netif_stop_queue(netdev); |
| 2086 | spin_unlock_irqrestore(&adapter->tx_lock, flags); |
| 2087 | return NETDEV_TX_BUSY; |
| 2088 | } |
| 2089 | |
| 2090 | tpd = atl1c_get_tpd(adapter, type); |
| 2091 | |
| 2092 | /* do TSO and check sum */ |
| 2093 | if (atl1c_tso_csum(adapter, skb, &tpd, type) != 0) { |
| 2094 | spin_unlock_irqrestore(&adapter->tx_lock, flags); |
| 2095 | dev_kfree_skb_any(skb); |
| 2096 | return NETDEV_TX_OK; |
| 2097 | } |
| 2098 | |
| 2099 | if (unlikely(adapter->vlgrp && vlan_tx_tag_present(skb))) { |
| 2100 | u16 vlan = vlan_tx_tag_get(skb); |
| 2101 | __le16 tag; |
| 2102 | |
| 2103 | vlan = cpu_to_le16(vlan); |
| 2104 | AT_VLAN_TO_TAG(vlan, tag); |
| 2105 | tpd->word1 |= 1 << TPD_INS_VTAG_SHIFT; |
| 2106 | tpd->vlan_tag = tag; |
| 2107 | } |
| 2108 | |
| 2109 | if (skb_network_offset(skb) != ETH_HLEN) |
| 2110 | tpd->word1 |= 1 << TPD_ETH_TYPE_SHIFT; /* Ethernet frame */ |
| 2111 | |
| 2112 | atl1c_tx_map(adapter, skb, tpd, type); |
| 2113 | atl1c_tx_queue(adapter, skb, tpd, type); |
| 2114 | |
Jie Yang | 43250dd | 2009-02-18 17:24:15 -0800 | [diff] [blame] | 2115 | spin_unlock_irqrestore(&adapter->tx_lock, flags); |
| 2116 | return NETDEV_TX_OK; |
| 2117 | } |
| 2118 | |
| 2119 | static void atl1c_free_irq(struct atl1c_adapter *adapter) |
| 2120 | { |
| 2121 | struct net_device *netdev = adapter->netdev; |
| 2122 | |
| 2123 | free_irq(adapter->pdev->irq, netdev); |
| 2124 | |
| 2125 | if (adapter->have_msi) |
| 2126 | pci_disable_msi(adapter->pdev); |
| 2127 | } |
| 2128 | |
| 2129 | static int atl1c_request_irq(struct atl1c_adapter *adapter) |
| 2130 | { |
| 2131 | struct pci_dev *pdev = adapter->pdev; |
| 2132 | struct net_device *netdev = adapter->netdev; |
| 2133 | int flags = 0; |
| 2134 | int err = 0; |
| 2135 | |
| 2136 | adapter->have_msi = true; |
| 2137 | err = pci_enable_msi(adapter->pdev); |
| 2138 | if (err) { |
| 2139 | if (netif_msg_ifup(adapter)) |
| 2140 | dev_err(&pdev->dev, |
| 2141 | "Unable to allocate MSI interrupt Error: %d\n", |
| 2142 | err); |
| 2143 | adapter->have_msi = false; |
| 2144 | } else |
| 2145 | netdev->irq = pdev->irq; |
| 2146 | |
| 2147 | if (!adapter->have_msi) |
| 2148 | flags |= IRQF_SHARED; |
| 2149 | err = request_irq(adapter->pdev->irq, &atl1c_intr, flags, |
| 2150 | netdev->name, netdev); |
| 2151 | if (err) { |
| 2152 | if (netif_msg_ifup(adapter)) |
| 2153 | dev_err(&pdev->dev, |
| 2154 | "Unable to allocate interrupt Error: %d\n", |
| 2155 | err); |
| 2156 | if (adapter->have_msi) |
| 2157 | pci_disable_msi(adapter->pdev); |
| 2158 | return err; |
| 2159 | } |
| 2160 | if (netif_msg_ifup(adapter)) |
| 2161 | dev_dbg(&pdev->dev, "atl1c_request_irq OK\n"); |
| 2162 | return err; |
| 2163 | } |
| 2164 | |
| 2165 | int atl1c_up(struct atl1c_adapter *adapter) |
| 2166 | { |
| 2167 | struct net_device *netdev = adapter->netdev; |
| 2168 | int num; |
| 2169 | int err; |
| 2170 | int i; |
| 2171 | |
| 2172 | netif_carrier_off(netdev); |
| 2173 | atl1c_init_ring_ptrs(adapter); |
| 2174 | atl1c_set_multi(netdev); |
| 2175 | atl1c_restore_vlan(adapter); |
| 2176 | |
| 2177 | for (i = 0; i < adapter->num_rx_queues; i++) { |
| 2178 | num = atl1c_alloc_rx_buffer(adapter, i); |
| 2179 | if (unlikely(num == 0)) { |
| 2180 | err = -ENOMEM; |
| 2181 | goto err_alloc_rx; |
| 2182 | } |
| 2183 | } |
| 2184 | |
| 2185 | if (atl1c_configure(adapter)) { |
| 2186 | err = -EIO; |
| 2187 | goto err_up; |
| 2188 | } |
| 2189 | |
| 2190 | err = atl1c_request_irq(adapter); |
| 2191 | if (unlikely(err)) |
| 2192 | goto err_up; |
| 2193 | |
| 2194 | clear_bit(__AT_DOWN, &adapter->flags); |
| 2195 | napi_enable(&adapter->napi); |
| 2196 | atl1c_irq_enable(adapter); |
| 2197 | atl1c_check_link_status(adapter); |
| 2198 | netif_start_queue(netdev); |
| 2199 | return err; |
| 2200 | |
| 2201 | err_up: |
| 2202 | err_alloc_rx: |
| 2203 | atl1c_clean_rx_ring(adapter); |
| 2204 | return err; |
| 2205 | } |
| 2206 | |
| 2207 | void atl1c_down(struct atl1c_adapter *adapter) |
| 2208 | { |
| 2209 | struct net_device *netdev = adapter->netdev; |
| 2210 | |
| 2211 | atl1c_del_timer(adapter); |
| 2212 | atl1c_cancel_work(adapter); |
| 2213 | |
| 2214 | /* signal that we're down so the interrupt handler does not |
| 2215 | * reschedule our watchdog timer */ |
| 2216 | set_bit(__AT_DOWN, &adapter->flags); |
| 2217 | netif_carrier_off(netdev); |
| 2218 | napi_disable(&adapter->napi); |
| 2219 | atl1c_irq_disable(adapter); |
| 2220 | atl1c_free_irq(adapter); |
| 2221 | AT_WRITE_REG(&adapter->hw, REG_ISR, ISR_DIS_INT); |
| 2222 | /* reset MAC to disable all RX/TX */ |
| 2223 | atl1c_reset_mac(&adapter->hw); |
| 2224 | msleep(1); |
| 2225 | |
| 2226 | adapter->link_speed = SPEED_0; |
| 2227 | adapter->link_duplex = -1; |
| 2228 | atl1c_clean_tx_ring(adapter, atl1c_trans_normal); |
| 2229 | atl1c_clean_tx_ring(adapter, atl1c_trans_high); |
| 2230 | atl1c_clean_rx_ring(adapter); |
| 2231 | } |
| 2232 | |
| 2233 | /* |
| 2234 | * atl1c_open - Called when a network interface is made active |
| 2235 | * @netdev: network interface device structure |
| 2236 | * |
| 2237 | * Returns 0 on success, negative value on failure |
| 2238 | * |
| 2239 | * The open entry point is called when a network interface is made |
| 2240 | * active by the system (IFF_UP). At this point all resources needed |
| 2241 | * for transmit and receive operations are allocated, the interrupt |
| 2242 | * handler is registered with the OS, the watchdog timer is started, |
| 2243 | * and the stack is notified that the interface is ready. |
| 2244 | */ |
| 2245 | static int atl1c_open(struct net_device *netdev) |
| 2246 | { |
| 2247 | struct atl1c_adapter *adapter = netdev_priv(netdev); |
| 2248 | int err; |
| 2249 | |
| 2250 | /* disallow open during test */ |
| 2251 | if (test_bit(__AT_TESTING, &adapter->flags)) |
| 2252 | return -EBUSY; |
| 2253 | |
| 2254 | /* allocate rx/tx dma buffer & descriptors */ |
| 2255 | err = atl1c_setup_ring_resources(adapter); |
| 2256 | if (unlikely(err)) |
| 2257 | return err; |
| 2258 | |
| 2259 | err = atl1c_up(adapter); |
| 2260 | if (unlikely(err)) |
| 2261 | goto err_up; |
| 2262 | |
| 2263 | if (adapter->hw.ctrl_flags & ATL1C_FPGA_VERSION) { |
| 2264 | u32 phy_data; |
| 2265 | |
| 2266 | AT_READ_REG(&adapter->hw, REG_MDIO_CTRL, &phy_data); |
| 2267 | phy_data |= MDIO_AP_EN; |
| 2268 | AT_WRITE_REG(&adapter->hw, REG_MDIO_CTRL, phy_data); |
| 2269 | } |
| 2270 | return 0; |
| 2271 | |
| 2272 | err_up: |
| 2273 | atl1c_free_irq(adapter); |
| 2274 | atl1c_free_ring_resources(adapter); |
| 2275 | atl1c_reset_mac(&adapter->hw); |
| 2276 | return err; |
| 2277 | } |
| 2278 | |
| 2279 | /* |
| 2280 | * atl1c_close - Disables a network interface |
| 2281 | * @netdev: network interface device structure |
| 2282 | * |
| 2283 | * Returns 0, this is not allowed to fail |
| 2284 | * |
| 2285 | * The close entry point is called when an interface is de-activated |
| 2286 | * by the OS. The hardware is still under the drivers control, but |
| 2287 | * needs to be disabled. A global MAC reset is issued to stop the |
| 2288 | * hardware, and all transmit and receive resources are freed. |
| 2289 | */ |
| 2290 | static int atl1c_close(struct net_device *netdev) |
| 2291 | { |
| 2292 | struct atl1c_adapter *adapter = netdev_priv(netdev); |
| 2293 | |
| 2294 | WARN_ON(test_bit(__AT_RESETTING, &adapter->flags)); |
| 2295 | atl1c_down(adapter); |
| 2296 | atl1c_free_ring_resources(adapter); |
| 2297 | return 0; |
| 2298 | } |
| 2299 | |
| 2300 | static int atl1c_suspend(struct pci_dev *pdev, pm_message_t state) |
| 2301 | { |
| 2302 | struct net_device *netdev = pci_get_drvdata(pdev); |
| 2303 | struct atl1c_adapter *adapter = netdev_priv(netdev); |
| 2304 | struct atl1c_hw *hw = &adapter->hw; |
| 2305 | u32 ctrl; |
| 2306 | u32 mac_ctrl_data; |
| 2307 | u32 master_ctrl_data; |
| 2308 | u32 wol_ctrl_data; |
| 2309 | u16 mii_bmsr_data; |
| 2310 | u16 save_autoneg_advertised; |
| 2311 | u16 mii_intr_status_data; |
| 2312 | u32 wufc = adapter->wol; |
| 2313 | u32 i; |
| 2314 | int retval = 0; |
| 2315 | |
| 2316 | if (netif_running(netdev)) { |
| 2317 | WARN_ON(test_bit(__AT_RESETTING, &adapter->flags)); |
| 2318 | atl1c_down(adapter); |
| 2319 | } |
| 2320 | netif_device_detach(netdev); |
| 2321 | atl1c_disable_l0s_l1(hw); |
| 2322 | retval = pci_save_state(pdev); |
| 2323 | if (retval) |
| 2324 | return retval; |
| 2325 | if (wufc) { |
| 2326 | AT_READ_REG(hw, REG_MASTER_CTRL, &master_ctrl_data); |
| 2327 | master_ctrl_data &= ~MASTER_CTRL_CLK_SEL_DIS; |
| 2328 | |
| 2329 | /* get link status */ |
| 2330 | atl1c_read_phy_reg(hw, MII_BMSR, (u16 *)&mii_bmsr_data); |
| 2331 | atl1c_read_phy_reg(hw, MII_BMSR, (u16 *)&mii_bmsr_data); |
| 2332 | save_autoneg_advertised = hw->autoneg_advertised; |
| 2333 | hw->autoneg_advertised = ADVERTISED_10baseT_Half; |
| 2334 | if (atl1c_restart_autoneg(hw) != 0) |
| 2335 | if (netif_msg_link(adapter)) |
| 2336 | dev_warn(&pdev->dev, "phy autoneg failed\n"); |
| 2337 | hw->phy_configured = false; /* re-init PHY when resume */ |
| 2338 | hw->autoneg_advertised = save_autoneg_advertised; |
| 2339 | /* turn on magic packet wol */ |
| 2340 | if (wufc & AT_WUFC_MAG) |
| 2341 | wol_ctrl_data = WOL_MAGIC_EN | WOL_MAGIC_PME_EN; |
| 2342 | |
| 2343 | if (wufc & AT_WUFC_LNKC) { |
| 2344 | for (i = 0; i < AT_SUSPEND_LINK_TIMEOUT; i++) { |
| 2345 | msleep(100); |
| 2346 | atl1c_read_phy_reg(hw, MII_BMSR, |
| 2347 | (u16 *)&mii_bmsr_data); |
| 2348 | if (mii_bmsr_data & BMSR_LSTATUS) |
| 2349 | break; |
| 2350 | } |
| 2351 | if ((mii_bmsr_data & BMSR_LSTATUS) == 0) |
| 2352 | if (netif_msg_link(adapter)) |
| 2353 | dev_warn(&pdev->dev, |
| 2354 | "%s: Link may change" |
| 2355 | "when suspend\n", |
| 2356 | atl1c_driver_name); |
| 2357 | wol_ctrl_data |= WOL_LINK_CHG_EN | WOL_LINK_CHG_PME_EN; |
| 2358 | /* only link up can wake up */ |
| 2359 | if (atl1c_write_phy_reg(hw, MII_IER, IER_LINK_UP) != 0) { |
| 2360 | if (netif_msg_link(adapter)) |
| 2361 | dev_err(&pdev->dev, |
| 2362 | "%s: read write phy " |
| 2363 | "register failed.\n", |
| 2364 | atl1c_driver_name); |
| 2365 | goto wol_dis; |
| 2366 | } |
| 2367 | } |
| 2368 | /* clear phy interrupt */ |
| 2369 | atl1c_read_phy_reg(hw, MII_ISR, &mii_intr_status_data); |
| 2370 | /* Config MAC Ctrl register */ |
| 2371 | mac_ctrl_data = MAC_CTRL_RX_EN; |
| 2372 | /* set to 10/100M halt duplex */ |
| 2373 | mac_ctrl_data |= atl1c_mac_speed_10_100 << MAC_CTRL_SPEED_SHIFT; |
| 2374 | mac_ctrl_data |= (((u32)adapter->hw.preamble_len & |
| 2375 | MAC_CTRL_PRMLEN_MASK) << |
| 2376 | MAC_CTRL_PRMLEN_SHIFT); |
| 2377 | |
| 2378 | if (adapter->vlgrp) |
| 2379 | mac_ctrl_data |= MAC_CTRL_RMV_VLAN; |
| 2380 | |
| 2381 | /* magic packet maybe Broadcast&multicast&Unicast frame */ |
| 2382 | if (wufc & AT_WUFC_MAG) |
| 2383 | mac_ctrl_data |= MAC_CTRL_BC_EN; |
| 2384 | |
| 2385 | if (netif_msg_hw(adapter)) |
| 2386 | dev_dbg(&pdev->dev, |
| 2387 | "%s: suspend MAC=0x%x\n", |
| 2388 | atl1c_driver_name, mac_ctrl_data); |
| 2389 | AT_WRITE_REG(hw, REG_MASTER_CTRL, master_ctrl_data); |
| 2390 | AT_WRITE_REG(hw, REG_WOL_CTRL, wol_ctrl_data); |
| 2391 | AT_WRITE_REG(hw, REG_MAC_CTRL, mac_ctrl_data); |
| 2392 | |
| 2393 | /* pcie patch */ |
| 2394 | AT_READ_REG(hw, REG_PCIE_PHYMISC, &ctrl); |
| 2395 | ctrl |= PCIE_PHYMISC_FORCE_RCV_DET; |
| 2396 | AT_WRITE_REG(hw, REG_PCIE_PHYMISC, ctrl); |
| 2397 | |
| 2398 | pci_enable_wake(pdev, pci_choose_state(pdev, state), 1); |
| 2399 | goto suspend_exit; |
| 2400 | } |
| 2401 | wol_dis: |
| 2402 | |
| 2403 | /* WOL disabled */ |
| 2404 | AT_WRITE_REG(hw, REG_WOL_CTRL, 0); |
| 2405 | |
| 2406 | /* pcie patch */ |
| 2407 | AT_READ_REG(hw, REG_PCIE_PHYMISC, &ctrl); |
| 2408 | ctrl |= PCIE_PHYMISC_FORCE_RCV_DET; |
| 2409 | AT_WRITE_REG(hw, REG_PCIE_PHYMISC, ctrl); |
| 2410 | |
| 2411 | atl1c_phy_disable(hw); |
| 2412 | hw->phy_configured = false; /* re-init PHY when resume */ |
| 2413 | |
| 2414 | pci_enable_wake(pdev, pci_choose_state(pdev, state), 0); |
| 2415 | suspend_exit: |
| 2416 | |
| 2417 | pci_disable_device(pdev); |
| 2418 | pci_set_power_state(pdev, pci_choose_state(pdev, state)); |
| 2419 | |
| 2420 | return 0; |
| 2421 | } |
| 2422 | |
| 2423 | static int atl1c_resume(struct pci_dev *pdev) |
| 2424 | { |
| 2425 | struct net_device *netdev = pci_get_drvdata(pdev); |
| 2426 | struct atl1c_adapter *adapter = netdev_priv(netdev); |
| 2427 | |
| 2428 | pci_set_power_state(pdev, PCI_D0); |
| 2429 | pci_restore_state(pdev); |
| 2430 | pci_enable_wake(pdev, PCI_D3hot, 0); |
| 2431 | pci_enable_wake(pdev, PCI_D3cold, 0); |
| 2432 | |
| 2433 | AT_WRITE_REG(&adapter->hw, REG_WOL_CTRL, 0); |
| 2434 | |
| 2435 | atl1c_phy_reset(&adapter->hw); |
| 2436 | atl1c_reset_mac(&adapter->hw); |
| 2437 | netif_device_attach(netdev); |
| 2438 | if (netif_running(netdev)) |
| 2439 | atl1c_up(adapter); |
| 2440 | |
| 2441 | return 0; |
| 2442 | } |
| 2443 | |
| 2444 | static void atl1c_shutdown(struct pci_dev *pdev) |
| 2445 | { |
| 2446 | atl1c_suspend(pdev, PMSG_SUSPEND); |
| 2447 | } |
| 2448 | |
| 2449 | static const struct net_device_ops atl1c_netdev_ops = { |
| 2450 | .ndo_open = atl1c_open, |
| 2451 | .ndo_stop = atl1c_close, |
| 2452 | .ndo_validate_addr = eth_validate_addr, |
| 2453 | .ndo_start_xmit = atl1c_xmit_frame, |
| 2454 | .ndo_set_mac_address = atl1c_set_mac_addr, |
| 2455 | .ndo_set_multicast_list = atl1c_set_multi, |
| 2456 | .ndo_change_mtu = atl1c_change_mtu, |
| 2457 | .ndo_do_ioctl = atl1c_ioctl, |
| 2458 | .ndo_tx_timeout = atl1c_tx_timeout, |
| 2459 | .ndo_get_stats = atl1c_get_stats, |
| 2460 | .ndo_vlan_rx_register = atl1c_vlan_rx_register, |
| 2461 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 2462 | .ndo_poll_controller = atl1c_netpoll, |
| 2463 | #endif |
| 2464 | }; |
| 2465 | |
| 2466 | static int atl1c_init_netdev(struct net_device *netdev, struct pci_dev *pdev) |
| 2467 | { |
| 2468 | SET_NETDEV_DEV(netdev, &pdev->dev); |
| 2469 | pci_set_drvdata(pdev, netdev); |
| 2470 | |
| 2471 | netdev->irq = pdev->irq; |
| 2472 | netdev->netdev_ops = &atl1c_netdev_ops; |
| 2473 | netdev->watchdog_timeo = AT_TX_WATCHDOG; |
| 2474 | atl1c_set_ethtool_ops(netdev); |
| 2475 | |
| 2476 | /* TODO: add when ready */ |
| 2477 | netdev->features = NETIF_F_SG | |
| 2478 | NETIF_F_HW_CSUM | |
| 2479 | NETIF_F_HW_VLAN_TX | |
| 2480 | NETIF_F_HW_VLAN_RX | |
| 2481 | NETIF_F_TSO | |
| 2482 | NETIF_F_TSO6; |
| 2483 | return 0; |
| 2484 | } |
| 2485 | |
| 2486 | /* |
| 2487 | * atl1c_probe - Device Initialization Routine |
| 2488 | * @pdev: PCI device information struct |
| 2489 | * @ent: entry in atl1c_pci_tbl |
| 2490 | * |
| 2491 | * Returns 0 on success, negative on failure |
| 2492 | * |
| 2493 | * atl1c_probe initializes an adapter identified by a pci_dev structure. |
| 2494 | * The OS initialization, configuring of the adapter private structure, |
| 2495 | * and a hardware reset occur. |
| 2496 | */ |
| 2497 | static int __devinit atl1c_probe(struct pci_dev *pdev, |
| 2498 | const struct pci_device_id *ent) |
| 2499 | { |
| 2500 | struct net_device *netdev; |
| 2501 | struct atl1c_adapter *adapter; |
| 2502 | static int cards_found; |
| 2503 | |
| 2504 | int err = 0; |
| 2505 | |
| 2506 | /* enable device (incl. PCI PM wakeup and hotplug setup) */ |
| 2507 | err = pci_enable_device_mem(pdev); |
| 2508 | if (err) { |
| 2509 | dev_err(&pdev->dev, "cannot enable PCI device\n"); |
| 2510 | return err; |
| 2511 | } |
| 2512 | |
| 2513 | /* |
| 2514 | * The atl1c chip can DMA to 64-bit addresses, but it uses a single |
| 2515 | * shared register for the high 32 bits, so only a single, aligned, |
| 2516 | * 4 GB physical address range can be used at a time. |
| 2517 | * |
| 2518 | * Supporting 64-bit DMA on this hardware is more trouble than it's |
| 2519 | * worth. It is far easier to limit to 32-bit DMA than update |
| 2520 | * various kernel subsystems to support the mechanics required by a |
| 2521 | * fixed-high-32-bit system. |
| 2522 | */ |
Yang Hongyang | e930438 | 2009-04-13 14:40:14 -0700 | [diff] [blame] | 2523 | if ((pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) || |
| 2524 | (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)) { |
Jie Yang | 43250dd | 2009-02-18 17:24:15 -0800 | [diff] [blame] | 2525 | dev_err(&pdev->dev, "No usable DMA configuration,aborting\n"); |
| 2526 | goto err_dma; |
| 2527 | } |
| 2528 | |
| 2529 | err = pci_request_regions(pdev, atl1c_driver_name); |
| 2530 | if (err) { |
| 2531 | dev_err(&pdev->dev, "cannot obtain PCI resources\n"); |
| 2532 | goto err_pci_reg; |
| 2533 | } |
| 2534 | |
| 2535 | pci_set_master(pdev); |
| 2536 | |
| 2537 | netdev = alloc_etherdev(sizeof(struct atl1c_adapter)); |
| 2538 | if (netdev == NULL) { |
| 2539 | err = -ENOMEM; |
| 2540 | dev_err(&pdev->dev, "etherdev alloc failed\n"); |
| 2541 | goto err_alloc_etherdev; |
| 2542 | } |
| 2543 | |
| 2544 | err = atl1c_init_netdev(netdev, pdev); |
| 2545 | if (err) { |
| 2546 | dev_err(&pdev->dev, "init netdevice failed\n"); |
| 2547 | goto err_init_netdev; |
| 2548 | } |
| 2549 | adapter = netdev_priv(netdev); |
| 2550 | adapter->bd_number = cards_found; |
| 2551 | adapter->netdev = netdev; |
| 2552 | adapter->pdev = pdev; |
| 2553 | adapter->hw.adapter = adapter; |
| 2554 | adapter->msg_enable = netif_msg_init(-1, atl1c_default_msg); |
| 2555 | adapter->hw.hw_addr = ioremap(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0)); |
| 2556 | if (!adapter->hw.hw_addr) { |
| 2557 | err = -EIO; |
| 2558 | dev_err(&pdev->dev, "cannot map device registers\n"); |
| 2559 | goto err_ioremap; |
| 2560 | } |
| 2561 | netdev->base_addr = (unsigned long)adapter->hw.hw_addr; |
| 2562 | |
| 2563 | /* init mii data */ |
| 2564 | adapter->mii.dev = netdev; |
| 2565 | adapter->mii.mdio_read = atl1c_mdio_read; |
| 2566 | adapter->mii.mdio_write = atl1c_mdio_write; |
| 2567 | adapter->mii.phy_id_mask = 0x1f; |
| 2568 | adapter->mii.reg_num_mask = MDIO_REG_ADDR_MASK; |
| 2569 | netif_napi_add(netdev, &adapter->napi, atl1c_clean, 64); |
| 2570 | setup_timer(&adapter->phy_config_timer, atl1c_phy_config, |
| 2571 | (unsigned long)adapter); |
| 2572 | /* setup the private structure */ |
| 2573 | err = atl1c_sw_init(adapter); |
| 2574 | if (err) { |
| 2575 | dev_err(&pdev->dev, "net device private data init failed\n"); |
| 2576 | goto err_sw_init; |
| 2577 | } |
| 2578 | atl1c_reset_pcie(&adapter->hw, ATL1C_PCIE_L0S_L1_DISABLE | |
| 2579 | ATL1C_PCIE_PHY_RESET); |
| 2580 | |
| 2581 | /* Init GPHY as early as possible due to power saving issue */ |
| 2582 | atl1c_phy_reset(&adapter->hw); |
| 2583 | |
| 2584 | err = atl1c_reset_mac(&adapter->hw); |
| 2585 | if (err) { |
| 2586 | err = -EIO; |
| 2587 | goto err_reset; |
| 2588 | } |
| 2589 | |
| 2590 | device_init_wakeup(&pdev->dev, 1); |
| 2591 | /* reset the controller to |
| 2592 | * put the device in a known good starting state */ |
| 2593 | err = atl1c_phy_init(&adapter->hw); |
| 2594 | if (err) { |
| 2595 | err = -EIO; |
| 2596 | goto err_reset; |
| 2597 | } |
| 2598 | if (atl1c_read_mac_addr(&adapter->hw) != 0) { |
| 2599 | err = -EIO; |
| 2600 | dev_err(&pdev->dev, "get mac address failed\n"); |
| 2601 | goto err_eeprom; |
| 2602 | } |
| 2603 | memcpy(netdev->dev_addr, adapter->hw.mac_addr, netdev->addr_len); |
| 2604 | memcpy(netdev->perm_addr, adapter->hw.mac_addr, netdev->addr_len); |
| 2605 | if (netif_msg_probe(adapter)) |
| 2606 | dev_dbg(&pdev->dev, |
| 2607 | "mac address : %02x-%02x-%02x-%02x-%02x-%02x\n", |
| 2608 | adapter->hw.mac_addr[0], adapter->hw.mac_addr[1], |
| 2609 | adapter->hw.mac_addr[2], adapter->hw.mac_addr[3], |
| 2610 | adapter->hw.mac_addr[4], adapter->hw.mac_addr[5]); |
| 2611 | |
| 2612 | atl1c_hw_set_mac_addr(&adapter->hw); |
| 2613 | INIT_WORK(&adapter->reset_task, atl1c_reset_task); |
| 2614 | INIT_WORK(&adapter->link_chg_task, atl1c_link_chg_task); |
| 2615 | err = register_netdev(netdev); |
| 2616 | if (err) { |
| 2617 | dev_err(&pdev->dev, "register netdevice failed\n"); |
| 2618 | goto err_register; |
| 2619 | } |
| 2620 | |
| 2621 | if (netif_msg_probe(adapter)) |
| 2622 | dev_info(&pdev->dev, "version %s\n", ATL1C_DRV_VERSION); |
| 2623 | cards_found++; |
| 2624 | return 0; |
| 2625 | |
| 2626 | err_reset: |
| 2627 | err_register: |
| 2628 | err_sw_init: |
| 2629 | err_eeprom: |
| 2630 | iounmap(adapter->hw.hw_addr); |
| 2631 | err_init_netdev: |
| 2632 | err_ioremap: |
| 2633 | free_netdev(netdev); |
| 2634 | err_alloc_etherdev: |
| 2635 | pci_release_regions(pdev); |
| 2636 | err_pci_reg: |
| 2637 | err_dma: |
| 2638 | pci_disable_device(pdev); |
| 2639 | return err; |
| 2640 | } |
| 2641 | |
| 2642 | /* |
| 2643 | * atl1c_remove - Device Removal Routine |
| 2644 | * @pdev: PCI device information struct |
| 2645 | * |
| 2646 | * atl1c_remove is called by the PCI subsystem to alert the driver |
| 2647 | * that it should release a PCI device. The could be caused by a |
| 2648 | * Hot-Plug event, or because the driver is going to be removed from |
| 2649 | * memory. |
| 2650 | */ |
| 2651 | static void __devexit atl1c_remove(struct pci_dev *pdev) |
| 2652 | { |
| 2653 | struct net_device *netdev = pci_get_drvdata(pdev); |
| 2654 | struct atl1c_adapter *adapter = netdev_priv(netdev); |
| 2655 | |
| 2656 | unregister_netdev(netdev); |
| 2657 | atl1c_phy_disable(&adapter->hw); |
| 2658 | |
| 2659 | iounmap(adapter->hw.hw_addr); |
| 2660 | |
| 2661 | pci_release_regions(pdev); |
| 2662 | pci_disable_device(pdev); |
| 2663 | free_netdev(netdev); |
| 2664 | } |
| 2665 | |
| 2666 | /* |
| 2667 | * atl1c_io_error_detected - called when PCI error is detected |
| 2668 | * @pdev: Pointer to PCI device |
| 2669 | * @state: The current pci connection state |
| 2670 | * |
| 2671 | * This function is called after a PCI bus error affecting |
| 2672 | * this device has been detected. |
| 2673 | */ |
| 2674 | static pci_ers_result_t atl1c_io_error_detected(struct pci_dev *pdev, |
| 2675 | pci_channel_state_t state) |
| 2676 | { |
| 2677 | struct net_device *netdev = pci_get_drvdata(pdev); |
| 2678 | struct atl1c_adapter *adapter = netdev_priv(netdev); |
| 2679 | |
| 2680 | netif_device_detach(netdev); |
| 2681 | |
Dean Nelson | 005fb4f | 2009-07-31 09:13:02 +0000 | [diff] [blame] | 2682 | if (state == pci_channel_io_perm_failure) |
| 2683 | return PCI_ERS_RESULT_DISCONNECT; |
| 2684 | |
Jie Yang | 43250dd | 2009-02-18 17:24:15 -0800 | [diff] [blame] | 2685 | if (netif_running(netdev)) |
| 2686 | atl1c_down(adapter); |
| 2687 | |
| 2688 | pci_disable_device(pdev); |
| 2689 | |
| 2690 | /* Request a slot slot reset. */ |
| 2691 | return PCI_ERS_RESULT_NEED_RESET; |
| 2692 | } |
| 2693 | |
| 2694 | /* |
| 2695 | * atl1c_io_slot_reset - called after the pci bus has been reset. |
| 2696 | * @pdev: Pointer to PCI device |
| 2697 | * |
| 2698 | * Restart the card from scratch, as if from a cold-boot. Implementation |
| 2699 | * resembles the first-half of the e1000_resume routine. |
| 2700 | */ |
| 2701 | static pci_ers_result_t atl1c_io_slot_reset(struct pci_dev *pdev) |
| 2702 | { |
| 2703 | struct net_device *netdev = pci_get_drvdata(pdev); |
| 2704 | struct atl1c_adapter *adapter = netdev_priv(netdev); |
| 2705 | |
| 2706 | if (pci_enable_device(pdev)) { |
| 2707 | if (netif_msg_hw(adapter)) |
| 2708 | dev_err(&pdev->dev, |
| 2709 | "Cannot re-enable PCI device after reset\n"); |
| 2710 | return PCI_ERS_RESULT_DISCONNECT; |
| 2711 | } |
| 2712 | pci_set_master(pdev); |
| 2713 | |
| 2714 | pci_enable_wake(pdev, PCI_D3hot, 0); |
| 2715 | pci_enable_wake(pdev, PCI_D3cold, 0); |
| 2716 | |
| 2717 | atl1c_reset_mac(&adapter->hw); |
| 2718 | |
| 2719 | return PCI_ERS_RESULT_RECOVERED; |
| 2720 | } |
| 2721 | |
| 2722 | /* |
| 2723 | * atl1c_io_resume - called when traffic can start flowing again. |
| 2724 | * @pdev: Pointer to PCI device |
| 2725 | * |
| 2726 | * This callback is called when the error recovery driver tells us that |
| 2727 | * its OK to resume normal operation. Implementation resembles the |
| 2728 | * second-half of the atl1c_resume routine. |
| 2729 | */ |
| 2730 | static void atl1c_io_resume(struct pci_dev *pdev) |
| 2731 | { |
| 2732 | struct net_device *netdev = pci_get_drvdata(pdev); |
| 2733 | struct atl1c_adapter *adapter = netdev_priv(netdev); |
| 2734 | |
| 2735 | if (netif_running(netdev)) { |
| 2736 | if (atl1c_up(adapter)) { |
| 2737 | if (netif_msg_hw(adapter)) |
| 2738 | dev_err(&pdev->dev, |
| 2739 | "Cannot bring device back up after reset\n"); |
| 2740 | return; |
| 2741 | } |
| 2742 | } |
| 2743 | |
| 2744 | netif_device_attach(netdev); |
| 2745 | } |
| 2746 | |
| 2747 | static struct pci_error_handlers atl1c_err_handler = { |
| 2748 | .error_detected = atl1c_io_error_detected, |
| 2749 | .slot_reset = atl1c_io_slot_reset, |
| 2750 | .resume = atl1c_io_resume, |
| 2751 | }; |
| 2752 | |
| 2753 | static struct pci_driver atl1c_driver = { |
| 2754 | .name = atl1c_driver_name, |
| 2755 | .id_table = atl1c_pci_tbl, |
| 2756 | .probe = atl1c_probe, |
| 2757 | .remove = __devexit_p(atl1c_remove), |
| 2758 | /* Power Managment Hooks */ |
| 2759 | .suspend = atl1c_suspend, |
| 2760 | .resume = atl1c_resume, |
| 2761 | .shutdown = atl1c_shutdown, |
| 2762 | .err_handler = &atl1c_err_handler |
| 2763 | }; |
| 2764 | |
| 2765 | /* |
| 2766 | * atl1c_init_module - Driver Registration Routine |
| 2767 | * |
| 2768 | * atl1c_init_module is the first routine called when the driver is |
| 2769 | * loaded. All it does is register with the PCI subsystem. |
| 2770 | */ |
| 2771 | static int __init atl1c_init_module(void) |
| 2772 | { |
| 2773 | return pci_register_driver(&atl1c_driver); |
| 2774 | } |
| 2775 | |
| 2776 | /* |
| 2777 | * atl1c_exit_module - Driver Exit Cleanup Routine |
| 2778 | * |
| 2779 | * atl1c_exit_module is called just before the driver is removed |
| 2780 | * from memory. |
| 2781 | */ |
| 2782 | static void __exit atl1c_exit_module(void) |
| 2783 | { |
| 2784 | pci_unregister_driver(&atl1c_driver); |
| 2785 | } |
| 2786 | |
| 2787 | module_init(atl1c_init_module); |
| 2788 | module_exit(atl1c_exit_module); |