Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1 | /******************************************************************************* |
| 2 | |
| 3 | Intel(R) Gigabit Ethernet Linux driver |
| 4 | Copyright(c) 2007 Intel Corporation. |
| 5 | |
| 6 | This program is free software; you can redistribute it and/or modify it |
| 7 | under the terms and conditions of the GNU General Public License, |
| 8 | version 2, as published by the Free Software Foundation. |
| 9 | |
| 10 | This program is distributed in the hope it will be useful, but WITHOUT |
| 11 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 12 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| 13 | more details. |
| 14 | |
| 15 | You should have received a copy of the GNU General Public License along with |
| 16 | this program; if not, write to the Free Software Foundation, Inc., |
| 17 | 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. |
| 18 | |
| 19 | The full GNU General Public License is included in this distribution in |
| 20 | the file called "COPYING". |
| 21 | |
| 22 | Contact Information: |
| 23 | e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> |
| 24 | Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
| 25 | |
| 26 | *******************************************************************************/ |
| 27 | |
| 28 | #include <linux/module.h> |
| 29 | #include <linux/types.h> |
| 30 | #include <linux/init.h> |
| 31 | #include <linux/vmalloc.h> |
| 32 | #include <linux/pagemap.h> |
| 33 | #include <linux/netdevice.h> |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 34 | #include <linux/ipv6.h> |
| 35 | #include <net/checksum.h> |
| 36 | #include <net/ip6_checksum.h> |
| 37 | #include <linux/mii.h> |
| 38 | #include <linux/ethtool.h> |
| 39 | #include <linux/if_vlan.h> |
| 40 | #include <linux/pci.h> |
| 41 | #include <linux/delay.h> |
| 42 | #include <linux/interrupt.h> |
| 43 | #include <linux/if_ether.h> |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame^] | 44 | #ifdef CONFIG_DCA |
| 45 | #include <linux/dca.h> |
| 46 | #endif |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 47 | #include "igb.h" |
| 48 | |
| 49 | #define DRV_VERSION "1.0.8-k2" |
| 50 | char igb_driver_name[] = "igb"; |
| 51 | char igb_driver_version[] = DRV_VERSION; |
| 52 | static const char igb_driver_string[] = |
| 53 | "Intel(R) Gigabit Ethernet Network Driver"; |
| 54 | static const char igb_copyright[] = "Copyright (c) 2007 Intel Corporation."; |
| 55 | |
| 56 | |
| 57 | static const struct e1000_info *igb_info_tbl[] = { |
| 58 | [board_82575] = &e1000_82575_info, |
| 59 | }; |
| 60 | |
| 61 | static struct pci_device_id igb_pci_tbl[] = { |
| 62 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82575EB_COPPER), board_82575 }, |
| 63 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82575EB_FIBER_SERDES), board_82575 }, |
| 64 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82575GB_QUAD_COPPER), board_82575 }, |
| 65 | /* required last entry */ |
| 66 | {0, } |
| 67 | }; |
| 68 | |
| 69 | MODULE_DEVICE_TABLE(pci, igb_pci_tbl); |
| 70 | |
| 71 | void igb_reset(struct igb_adapter *); |
| 72 | static int igb_setup_all_tx_resources(struct igb_adapter *); |
| 73 | static int igb_setup_all_rx_resources(struct igb_adapter *); |
| 74 | static void igb_free_all_tx_resources(struct igb_adapter *); |
| 75 | static void igb_free_all_rx_resources(struct igb_adapter *); |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 76 | static void igb_free_tx_resources(struct igb_ring *); |
| 77 | static void igb_free_rx_resources(struct igb_ring *); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 78 | void igb_update_stats(struct igb_adapter *); |
| 79 | static int igb_probe(struct pci_dev *, const struct pci_device_id *); |
| 80 | static void __devexit igb_remove(struct pci_dev *pdev); |
| 81 | static int igb_sw_init(struct igb_adapter *); |
| 82 | static int igb_open(struct net_device *); |
| 83 | static int igb_close(struct net_device *); |
| 84 | static void igb_configure_tx(struct igb_adapter *); |
| 85 | static void igb_configure_rx(struct igb_adapter *); |
| 86 | static void igb_setup_rctl(struct igb_adapter *); |
| 87 | static void igb_clean_all_tx_rings(struct igb_adapter *); |
| 88 | static void igb_clean_all_rx_rings(struct igb_adapter *); |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 89 | static void igb_clean_tx_ring(struct igb_ring *); |
| 90 | static void igb_clean_rx_ring(struct igb_ring *); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 91 | static void igb_set_multi(struct net_device *); |
| 92 | static void igb_update_phy_info(unsigned long); |
| 93 | static void igb_watchdog(unsigned long); |
| 94 | static void igb_watchdog_task(struct work_struct *); |
| 95 | static int igb_xmit_frame_ring_adv(struct sk_buff *, struct net_device *, |
| 96 | struct igb_ring *); |
| 97 | static int igb_xmit_frame_adv(struct sk_buff *skb, struct net_device *); |
| 98 | static struct net_device_stats *igb_get_stats(struct net_device *); |
| 99 | static int igb_change_mtu(struct net_device *, int); |
| 100 | static int igb_set_mac(struct net_device *, void *); |
| 101 | static irqreturn_t igb_intr(int irq, void *); |
| 102 | static irqreturn_t igb_intr_msi(int irq, void *); |
| 103 | static irqreturn_t igb_msix_other(int irq, void *); |
| 104 | static irqreturn_t igb_msix_rx(int irq, void *); |
| 105 | static irqreturn_t igb_msix_tx(int irq, void *); |
| 106 | static int igb_clean_rx_ring_msix(struct napi_struct *, int); |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame^] | 107 | #ifdef CONFIG_DCA |
| 108 | static void igb_update_rx_dca(struct igb_ring *); |
| 109 | static void igb_update_tx_dca(struct igb_ring *); |
| 110 | static void igb_setup_dca(struct igb_adapter *); |
| 111 | #endif /* CONFIG_DCA */ |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 112 | static bool igb_clean_tx_irq(struct igb_ring *); |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 113 | static int igb_poll(struct napi_struct *, int); |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 114 | static bool igb_clean_rx_irq_adv(struct igb_ring *, int *, int); |
| 115 | static void igb_alloc_rx_buffers_adv(struct igb_ring *, int); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 116 | static int igb_ioctl(struct net_device *, struct ifreq *, int cmd); |
| 117 | static void igb_tx_timeout(struct net_device *); |
| 118 | static void igb_reset_task(struct work_struct *); |
| 119 | static void igb_vlan_rx_register(struct net_device *, struct vlan_group *); |
| 120 | static void igb_vlan_rx_add_vid(struct net_device *, u16); |
| 121 | static void igb_vlan_rx_kill_vid(struct net_device *, u16); |
| 122 | static void igb_restore_vlan(struct igb_adapter *); |
| 123 | |
| 124 | static int igb_suspend(struct pci_dev *, pm_message_t); |
| 125 | #ifdef CONFIG_PM |
| 126 | static int igb_resume(struct pci_dev *); |
| 127 | #endif |
| 128 | static void igb_shutdown(struct pci_dev *); |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame^] | 129 | #ifdef CONFIG_DCA |
| 130 | static int igb_notify_dca(struct notifier_block *, unsigned long, void *); |
| 131 | static struct notifier_block dca_notifier = { |
| 132 | .notifier_call = igb_notify_dca, |
| 133 | .next = NULL, |
| 134 | .priority = 0 |
| 135 | }; |
| 136 | #endif |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 137 | |
| 138 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 139 | /* for netdump / net console */ |
| 140 | static void igb_netpoll(struct net_device *); |
| 141 | #endif |
| 142 | |
| 143 | static pci_ers_result_t igb_io_error_detected(struct pci_dev *, |
| 144 | pci_channel_state_t); |
| 145 | static pci_ers_result_t igb_io_slot_reset(struct pci_dev *); |
| 146 | static void igb_io_resume(struct pci_dev *); |
| 147 | |
| 148 | static struct pci_error_handlers igb_err_handler = { |
| 149 | .error_detected = igb_io_error_detected, |
| 150 | .slot_reset = igb_io_slot_reset, |
| 151 | .resume = igb_io_resume, |
| 152 | }; |
| 153 | |
| 154 | |
| 155 | static struct pci_driver igb_driver = { |
| 156 | .name = igb_driver_name, |
| 157 | .id_table = igb_pci_tbl, |
| 158 | .probe = igb_probe, |
| 159 | .remove = __devexit_p(igb_remove), |
| 160 | #ifdef CONFIG_PM |
| 161 | /* Power Managment Hooks */ |
| 162 | .suspend = igb_suspend, |
| 163 | .resume = igb_resume, |
| 164 | #endif |
| 165 | .shutdown = igb_shutdown, |
| 166 | .err_handler = &igb_err_handler |
| 167 | }; |
| 168 | |
| 169 | MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>"); |
| 170 | MODULE_DESCRIPTION("Intel(R) Gigabit Ethernet Network Driver"); |
| 171 | MODULE_LICENSE("GPL"); |
| 172 | MODULE_VERSION(DRV_VERSION); |
| 173 | |
| 174 | #ifdef DEBUG |
| 175 | /** |
| 176 | * igb_get_hw_dev_name - return device name string |
| 177 | * used by hardware layer to print debugging information |
| 178 | **/ |
| 179 | char *igb_get_hw_dev_name(struct e1000_hw *hw) |
| 180 | { |
| 181 | struct igb_adapter *adapter = hw->back; |
| 182 | return adapter->netdev->name; |
| 183 | } |
| 184 | #endif |
| 185 | |
| 186 | /** |
| 187 | * igb_init_module - Driver Registration Routine |
| 188 | * |
| 189 | * igb_init_module is the first routine called when the driver is |
| 190 | * loaded. All it does is register with the PCI subsystem. |
| 191 | **/ |
| 192 | static int __init igb_init_module(void) |
| 193 | { |
| 194 | int ret; |
| 195 | printk(KERN_INFO "%s - version %s\n", |
| 196 | igb_driver_string, igb_driver_version); |
| 197 | |
| 198 | printk(KERN_INFO "%s\n", igb_copyright); |
| 199 | |
| 200 | ret = pci_register_driver(&igb_driver); |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame^] | 201 | #ifdef CONFIG_DCA |
| 202 | dca_register_notify(&dca_notifier); |
| 203 | #endif |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 204 | return ret; |
| 205 | } |
| 206 | |
| 207 | module_init(igb_init_module); |
| 208 | |
| 209 | /** |
| 210 | * igb_exit_module - Driver Exit Cleanup Routine |
| 211 | * |
| 212 | * igb_exit_module is called just before the driver is removed |
| 213 | * from memory. |
| 214 | **/ |
| 215 | static void __exit igb_exit_module(void) |
| 216 | { |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame^] | 217 | #ifdef CONFIG_DCA |
| 218 | dca_unregister_notify(&dca_notifier); |
| 219 | #endif |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 220 | pci_unregister_driver(&igb_driver); |
| 221 | } |
| 222 | |
| 223 | module_exit(igb_exit_module); |
| 224 | |
| 225 | /** |
| 226 | * igb_alloc_queues - Allocate memory for all rings |
| 227 | * @adapter: board private structure to initialize |
| 228 | * |
| 229 | * We allocate one ring per queue at run-time since we don't know the |
| 230 | * number of queues at compile-time. |
| 231 | **/ |
| 232 | static int igb_alloc_queues(struct igb_adapter *adapter) |
| 233 | { |
| 234 | int i; |
| 235 | |
| 236 | adapter->tx_ring = kcalloc(adapter->num_tx_queues, |
| 237 | sizeof(struct igb_ring), GFP_KERNEL); |
| 238 | if (!adapter->tx_ring) |
| 239 | return -ENOMEM; |
| 240 | |
| 241 | adapter->rx_ring = kcalloc(adapter->num_rx_queues, |
| 242 | sizeof(struct igb_ring), GFP_KERNEL); |
| 243 | if (!adapter->rx_ring) { |
| 244 | kfree(adapter->tx_ring); |
| 245 | return -ENOMEM; |
| 246 | } |
| 247 | |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 248 | for (i = 0; i < adapter->num_tx_queues; i++) { |
| 249 | struct igb_ring *ring = &(adapter->tx_ring[i]); |
| 250 | ring->adapter = adapter; |
| 251 | ring->queue_index = i; |
| 252 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 253 | for (i = 0; i < adapter->num_rx_queues; i++) { |
| 254 | struct igb_ring *ring = &(adapter->rx_ring[i]); |
| 255 | ring->adapter = adapter; |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 256 | ring->queue_index = i; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 257 | ring->itr_register = E1000_ITR; |
| 258 | |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 259 | /* set a default napi handler for each rx_ring */ |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 260 | netif_napi_add(adapter->netdev, &ring->napi, igb_poll, 64); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 261 | } |
| 262 | return 0; |
| 263 | } |
| 264 | |
| 265 | #define IGB_N0_QUEUE -1 |
| 266 | static void igb_assign_vector(struct igb_adapter *adapter, int rx_queue, |
| 267 | int tx_queue, int msix_vector) |
| 268 | { |
| 269 | u32 msixbm = 0; |
| 270 | struct e1000_hw *hw = &adapter->hw; |
| 271 | /* The 82575 assigns vectors using a bitmask, which matches the |
| 272 | bitmask for the EICR/EIMS/EIMC registers. To assign one |
| 273 | or more queues to a vector, we write the appropriate bits |
| 274 | into the MSIXBM register for that vector. */ |
| 275 | if (rx_queue > IGB_N0_QUEUE) { |
| 276 | msixbm = E1000_EICR_RX_QUEUE0 << rx_queue; |
| 277 | adapter->rx_ring[rx_queue].eims_value = msixbm; |
| 278 | } |
| 279 | if (tx_queue > IGB_N0_QUEUE) { |
| 280 | msixbm |= E1000_EICR_TX_QUEUE0 << tx_queue; |
| 281 | adapter->tx_ring[tx_queue].eims_value = |
| 282 | E1000_EICR_TX_QUEUE0 << tx_queue; |
| 283 | } |
| 284 | array_wr32(E1000_MSIXBM(0), msix_vector, msixbm); |
| 285 | } |
| 286 | |
| 287 | /** |
| 288 | * igb_configure_msix - Configure MSI-X hardware |
| 289 | * |
| 290 | * igb_configure_msix sets up the hardware to properly |
| 291 | * generate MSI-X interrupts. |
| 292 | **/ |
| 293 | static void igb_configure_msix(struct igb_adapter *adapter) |
| 294 | { |
| 295 | u32 tmp; |
| 296 | int i, vector = 0; |
| 297 | struct e1000_hw *hw = &adapter->hw; |
| 298 | |
| 299 | adapter->eims_enable_mask = 0; |
| 300 | |
| 301 | for (i = 0; i < adapter->num_tx_queues; i++) { |
| 302 | struct igb_ring *tx_ring = &adapter->tx_ring[i]; |
| 303 | igb_assign_vector(adapter, IGB_N0_QUEUE, i, vector++); |
| 304 | adapter->eims_enable_mask |= tx_ring->eims_value; |
| 305 | if (tx_ring->itr_val) |
| 306 | writel(1000000000 / (tx_ring->itr_val * 256), |
| 307 | hw->hw_addr + tx_ring->itr_register); |
| 308 | else |
| 309 | writel(1, hw->hw_addr + tx_ring->itr_register); |
| 310 | } |
| 311 | |
| 312 | for (i = 0; i < adapter->num_rx_queues; i++) { |
| 313 | struct igb_ring *rx_ring = &adapter->rx_ring[i]; |
| 314 | igb_assign_vector(adapter, i, IGB_N0_QUEUE, vector++); |
| 315 | adapter->eims_enable_mask |= rx_ring->eims_value; |
| 316 | if (rx_ring->itr_val) |
| 317 | writel(1000000000 / (rx_ring->itr_val * 256), |
| 318 | hw->hw_addr + rx_ring->itr_register); |
| 319 | else |
| 320 | writel(1, hw->hw_addr + rx_ring->itr_register); |
| 321 | } |
| 322 | |
| 323 | |
| 324 | /* set vector for other causes, i.e. link changes */ |
| 325 | array_wr32(E1000_MSIXBM(0), vector++, |
| 326 | E1000_EIMS_OTHER); |
| 327 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 328 | tmp = rd32(E1000_CTRL_EXT); |
| 329 | /* enable MSI-X PBA support*/ |
| 330 | tmp |= E1000_CTRL_EXT_PBA_CLR; |
| 331 | |
| 332 | /* Auto-Mask interrupts upon ICR read. */ |
| 333 | tmp |= E1000_CTRL_EXT_EIAME; |
| 334 | tmp |= E1000_CTRL_EXT_IRCA; |
| 335 | |
| 336 | wr32(E1000_CTRL_EXT, tmp); |
| 337 | adapter->eims_enable_mask |= E1000_EIMS_OTHER; |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 338 | adapter->eims_other = E1000_EIMS_OTHER; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 339 | |
| 340 | wrfl(); |
| 341 | } |
| 342 | |
| 343 | /** |
| 344 | * igb_request_msix - Initialize MSI-X interrupts |
| 345 | * |
| 346 | * igb_request_msix allocates MSI-X vectors and requests interrupts from the |
| 347 | * kernel. |
| 348 | **/ |
| 349 | static int igb_request_msix(struct igb_adapter *adapter) |
| 350 | { |
| 351 | struct net_device *netdev = adapter->netdev; |
| 352 | int i, err = 0, vector = 0; |
| 353 | |
| 354 | vector = 0; |
| 355 | |
| 356 | for (i = 0; i < adapter->num_tx_queues; i++) { |
| 357 | struct igb_ring *ring = &(adapter->tx_ring[i]); |
| 358 | sprintf(ring->name, "%s-tx%d", netdev->name, i); |
| 359 | err = request_irq(adapter->msix_entries[vector].vector, |
| 360 | &igb_msix_tx, 0, ring->name, |
| 361 | &(adapter->tx_ring[i])); |
| 362 | if (err) |
| 363 | goto out; |
| 364 | ring->itr_register = E1000_EITR(0) + (vector << 2); |
| 365 | ring->itr_val = adapter->itr; |
| 366 | vector++; |
| 367 | } |
| 368 | for (i = 0; i < adapter->num_rx_queues; i++) { |
| 369 | struct igb_ring *ring = &(adapter->rx_ring[i]); |
| 370 | if (strlen(netdev->name) < (IFNAMSIZ - 5)) |
| 371 | sprintf(ring->name, "%s-rx%d", netdev->name, i); |
| 372 | else |
| 373 | memcpy(ring->name, netdev->name, IFNAMSIZ); |
| 374 | err = request_irq(adapter->msix_entries[vector].vector, |
| 375 | &igb_msix_rx, 0, ring->name, |
| 376 | &(adapter->rx_ring[i])); |
| 377 | if (err) |
| 378 | goto out; |
| 379 | ring->itr_register = E1000_EITR(0) + (vector << 2); |
| 380 | ring->itr_val = adapter->itr; |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 381 | /* overwrite the poll routine for MSIX, we've already done |
| 382 | * netif_napi_add */ |
| 383 | ring->napi.poll = &igb_clean_rx_ring_msix; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 384 | vector++; |
| 385 | } |
| 386 | |
| 387 | err = request_irq(adapter->msix_entries[vector].vector, |
| 388 | &igb_msix_other, 0, netdev->name, netdev); |
| 389 | if (err) |
| 390 | goto out; |
| 391 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 392 | igb_configure_msix(adapter); |
| 393 | return 0; |
| 394 | out: |
| 395 | return err; |
| 396 | } |
| 397 | |
| 398 | static void igb_reset_interrupt_capability(struct igb_adapter *adapter) |
| 399 | { |
| 400 | if (adapter->msix_entries) { |
| 401 | pci_disable_msix(adapter->pdev); |
| 402 | kfree(adapter->msix_entries); |
| 403 | adapter->msix_entries = NULL; |
| 404 | } else if (adapter->msi_enabled) |
| 405 | pci_disable_msi(adapter->pdev); |
| 406 | return; |
| 407 | } |
| 408 | |
| 409 | |
| 410 | /** |
| 411 | * igb_set_interrupt_capability - set MSI or MSI-X if supported |
| 412 | * |
| 413 | * Attempt to configure interrupts using the best available |
| 414 | * capabilities of the hardware and kernel. |
| 415 | **/ |
| 416 | static void igb_set_interrupt_capability(struct igb_adapter *adapter) |
| 417 | { |
| 418 | int err; |
| 419 | int numvecs, i; |
| 420 | |
| 421 | numvecs = adapter->num_tx_queues + adapter->num_rx_queues + 1; |
| 422 | adapter->msix_entries = kcalloc(numvecs, sizeof(struct msix_entry), |
| 423 | GFP_KERNEL); |
| 424 | if (!adapter->msix_entries) |
| 425 | goto msi_only; |
| 426 | |
| 427 | for (i = 0; i < numvecs; i++) |
| 428 | adapter->msix_entries[i].entry = i; |
| 429 | |
| 430 | err = pci_enable_msix(adapter->pdev, |
| 431 | adapter->msix_entries, |
| 432 | numvecs); |
| 433 | if (err == 0) |
| 434 | return; |
| 435 | |
| 436 | igb_reset_interrupt_capability(adapter); |
| 437 | |
| 438 | /* If we can't do MSI-X, try MSI */ |
| 439 | msi_only: |
| 440 | adapter->num_rx_queues = 1; |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 441 | adapter->num_tx_queues = 1; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 442 | if (!pci_enable_msi(adapter->pdev)) |
| 443 | adapter->msi_enabled = 1; |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 444 | |
| 445 | #ifdef CONFIG_NETDEVICES_MULTIQUEUE |
| 446 | /* Notify the stack of the (possibly) reduced Tx Queue count. */ |
| 447 | adapter->netdev->egress_subqueue_count = adapter->num_tx_queues; |
| 448 | #endif |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 449 | return; |
| 450 | } |
| 451 | |
| 452 | /** |
| 453 | * igb_request_irq - initialize interrupts |
| 454 | * |
| 455 | * Attempts to configure interrupts using the best available |
| 456 | * capabilities of the hardware and kernel. |
| 457 | **/ |
| 458 | static int igb_request_irq(struct igb_adapter *adapter) |
| 459 | { |
| 460 | struct net_device *netdev = adapter->netdev; |
| 461 | struct e1000_hw *hw = &adapter->hw; |
| 462 | int err = 0; |
| 463 | |
| 464 | if (adapter->msix_entries) { |
| 465 | err = igb_request_msix(adapter); |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 466 | if (!err) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 467 | goto request_done; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 468 | /* fall back to MSI */ |
| 469 | igb_reset_interrupt_capability(adapter); |
| 470 | if (!pci_enable_msi(adapter->pdev)) |
| 471 | adapter->msi_enabled = 1; |
| 472 | igb_free_all_tx_resources(adapter); |
| 473 | igb_free_all_rx_resources(adapter); |
| 474 | adapter->num_rx_queues = 1; |
| 475 | igb_alloc_queues(adapter); |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 476 | } else { |
| 477 | wr32(E1000_MSIXBM(0), (E1000_EICR_RX_QUEUE0 | |
| 478 | E1000_EIMS_OTHER)); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 479 | } |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 480 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 481 | if (adapter->msi_enabled) { |
| 482 | err = request_irq(adapter->pdev->irq, &igb_intr_msi, 0, |
| 483 | netdev->name, netdev); |
| 484 | if (!err) |
| 485 | goto request_done; |
| 486 | /* fall back to legacy interrupts */ |
| 487 | igb_reset_interrupt_capability(adapter); |
| 488 | adapter->msi_enabled = 0; |
| 489 | } |
| 490 | |
| 491 | err = request_irq(adapter->pdev->irq, &igb_intr, IRQF_SHARED, |
| 492 | netdev->name, netdev); |
| 493 | |
Andy Gospodarek | 6cb5e57 | 2008-02-15 14:05:25 -0800 | [diff] [blame] | 494 | if (err) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 495 | dev_err(&adapter->pdev->dev, "Error %d getting interrupt\n", |
| 496 | err); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 497 | |
| 498 | request_done: |
| 499 | return err; |
| 500 | } |
| 501 | |
| 502 | static void igb_free_irq(struct igb_adapter *adapter) |
| 503 | { |
| 504 | struct net_device *netdev = adapter->netdev; |
| 505 | |
| 506 | if (adapter->msix_entries) { |
| 507 | int vector = 0, i; |
| 508 | |
| 509 | for (i = 0; i < adapter->num_tx_queues; i++) |
| 510 | free_irq(adapter->msix_entries[vector++].vector, |
| 511 | &(adapter->tx_ring[i])); |
| 512 | for (i = 0; i < adapter->num_rx_queues; i++) |
| 513 | free_irq(adapter->msix_entries[vector++].vector, |
| 514 | &(adapter->rx_ring[i])); |
| 515 | |
| 516 | free_irq(adapter->msix_entries[vector++].vector, netdev); |
| 517 | return; |
| 518 | } |
| 519 | |
| 520 | free_irq(adapter->pdev->irq, netdev); |
| 521 | } |
| 522 | |
| 523 | /** |
| 524 | * igb_irq_disable - Mask off interrupt generation on the NIC |
| 525 | * @adapter: board private structure |
| 526 | **/ |
| 527 | static void igb_irq_disable(struct igb_adapter *adapter) |
| 528 | { |
| 529 | struct e1000_hw *hw = &adapter->hw; |
| 530 | |
| 531 | if (adapter->msix_entries) { |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 532 | wr32(E1000_EIAM, 0); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 533 | wr32(E1000_EIMC, ~0); |
| 534 | wr32(E1000_EIAC, 0); |
| 535 | } |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 536 | |
| 537 | wr32(E1000_IAM, 0); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 538 | wr32(E1000_IMC, ~0); |
| 539 | wrfl(); |
| 540 | synchronize_irq(adapter->pdev->irq); |
| 541 | } |
| 542 | |
| 543 | /** |
| 544 | * igb_irq_enable - Enable default interrupt generation settings |
| 545 | * @adapter: board private structure |
| 546 | **/ |
| 547 | static void igb_irq_enable(struct igb_adapter *adapter) |
| 548 | { |
| 549 | struct e1000_hw *hw = &adapter->hw; |
| 550 | |
| 551 | if (adapter->msix_entries) { |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 552 | wr32(E1000_EIAC, adapter->eims_enable_mask); |
| 553 | wr32(E1000_EIAM, adapter->eims_enable_mask); |
| 554 | wr32(E1000_EIMS, adapter->eims_enable_mask); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 555 | wr32(E1000_IMS, E1000_IMS_LSC); |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 556 | } else { |
| 557 | wr32(E1000_IMS, IMS_ENABLE_MASK); |
| 558 | wr32(E1000_IAM, IMS_ENABLE_MASK); |
| 559 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 560 | } |
| 561 | |
| 562 | static void igb_update_mng_vlan(struct igb_adapter *adapter) |
| 563 | { |
| 564 | struct net_device *netdev = adapter->netdev; |
| 565 | u16 vid = adapter->hw.mng_cookie.vlan_id; |
| 566 | u16 old_vid = adapter->mng_vlan_id; |
| 567 | if (adapter->vlgrp) { |
| 568 | if (!vlan_group_get_device(adapter->vlgrp, vid)) { |
| 569 | if (adapter->hw.mng_cookie.status & |
| 570 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN) { |
| 571 | igb_vlan_rx_add_vid(netdev, vid); |
| 572 | adapter->mng_vlan_id = vid; |
| 573 | } else |
| 574 | adapter->mng_vlan_id = IGB_MNG_VLAN_NONE; |
| 575 | |
| 576 | if ((old_vid != (u16)IGB_MNG_VLAN_NONE) && |
| 577 | (vid != old_vid) && |
| 578 | !vlan_group_get_device(adapter->vlgrp, old_vid)) |
| 579 | igb_vlan_rx_kill_vid(netdev, old_vid); |
| 580 | } else |
| 581 | adapter->mng_vlan_id = vid; |
| 582 | } |
| 583 | } |
| 584 | |
| 585 | /** |
| 586 | * igb_release_hw_control - release control of the h/w to f/w |
| 587 | * @adapter: address of board private structure |
| 588 | * |
| 589 | * igb_release_hw_control resets CTRL_EXT:DRV_LOAD bit. |
| 590 | * For ASF and Pass Through versions of f/w this means that the |
| 591 | * driver is no longer loaded. |
| 592 | * |
| 593 | **/ |
| 594 | static void igb_release_hw_control(struct igb_adapter *adapter) |
| 595 | { |
| 596 | struct e1000_hw *hw = &adapter->hw; |
| 597 | u32 ctrl_ext; |
| 598 | |
| 599 | /* Let firmware take over control of h/w */ |
| 600 | ctrl_ext = rd32(E1000_CTRL_EXT); |
| 601 | wr32(E1000_CTRL_EXT, |
| 602 | ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD); |
| 603 | } |
| 604 | |
| 605 | |
| 606 | /** |
| 607 | * igb_get_hw_control - get control of the h/w from f/w |
| 608 | * @adapter: address of board private structure |
| 609 | * |
| 610 | * igb_get_hw_control sets CTRL_EXT:DRV_LOAD bit. |
| 611 | * For ASF and Pass Through versions of f/w this means that |
| 612 | * the driver is loaded. |
| 613 | * |
| 614 | **/ |
| 615 | static void igb_get_hw_control(struct igb_adapter *adapter) |
| 616 | { |
| 617 | struct e1000_hw *hw = &adapter->hw; |
| 618 | u32 ctrl_ext; |
| 619 | |
| 620 | /* Let firmware know the driver has taken over */ |
| 621 | ctrl_ext = rd32(E1000_CTRL_EXT); |
| 622 | wr32(E1000_CTRL_EXT, |
| 623 | ctrl_ext | E1000_CTRL_EXT_DRV_LOAD); |
| 624 | } |
| 625 | |
| 626 | static void igb_init_manageability(struct igb_adapter *adapter) |
| 627 | { |
| 628 | struct e1000_hw *hw = &adapter->hw; |
| 629 | |
| 630 | if (adapter->en_mng_pt) { |
| 631 | u32 manc2h = rd32(E1000_MANC2H); |
| 632 | u32 manc = rd32(E1000_MANC); |
| 633 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 634 | /* enable receiving management packets to the host */ |
| 635 | /* this will probably generate destination unreachable messages |
| 636 | * from the host OS, but the packets will be handled on SMBUS */ |
| 637 | manc |= E1000_MANC_EN_MNG2HOST; |
| 638 | #define E1000_MNG2HOST_PORT_623 (1 << 5) |
| 639 | #define E1000_MNG2HOST_PORT_664 (1 << 6) |
| 640 | manc2h |= E1000_MNG2HOST_PORT_623; |
| 641 | manc2h |= E1000_MNG2HOST_PORT_664; |
| 642 | wr32(E1000_MANC2H, manc2h); |
| 643 | |
| 644 | wr32(E1000_MANC, manc); |
| 645 | } |
| 646 | } |
| 647 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 648 | /** |
| 649 | * igb_configure - configure the hardware for RX and TX |
| 650 | * @adapter: private board structure |
| 651 | **/ |
| 652 | static void igb_configure(struct igb_adapter *adapter) |
| 653 | { |
| 654 | struct net_device *netdev = adapter->netdev; |
| 655 | int i; |
| 656 | |
| 657 | igb_get_hw_control(adapter); |
| 658 | igb_set_multi(netdev); |
| 659 | |
| 660 | igb_restore_vlan(adapter); |
| 661 | igb_init_manageability(adapter); |
| 662 | |
| 663 | igb_configure_tx(adapter); |
| 664 | igb_setup_rctl(adapter); |
| 665 | igb_configure_rx(adapter); |
Alexander Duyck | 662d720 | 2008-06-27 11:00:29 -0700 | [diff] [blame] | 666 | |
| 667 | igb_rx_fifo_flush_82575(&adapter->hw); |
| 668 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 669 | /* call IGB_DESC_UNUSED which always leaves |
| 670 | * at least 1 descriptor unused to make sure |
| 671 | * next_to_use != next_to_clean */ |
| 672 | for (i = 0; i < adapter->num_rx_queues; i++) { |
| 673 | struct igb_ring *ring = &adapter->rx_ring[i]; |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 674 | igb_alloc_rx_buffers_adv(ring, IGB_DESC_UNUSED(ring)); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 675 | } |
| 676 | |
| 677 | |
| 678 | adapter->tx_queue_len = netdev->tx_queue_len; |
| 679 | } |
| 680 | |
| 681 | |
| 682 | /** |
| 683 | * igb_up - Open the interface and prepare it to handle traffic |
| 684 | * @adapter: board private structure |
| 685 | **/ |
| 686 | |
| 687 | int igb_up(struct igb_adapter *adapter) |
| 688 | { |
| 689 | struct e1000_hw *hw = &adapter->hw; |
| 690 | int i; |
| 691 | |
| 692 | /* hardware has been reset, we need to reload some things */ |
| 693 | igb_configure(adapter); |
| 694 | |
| 695 | clear_bit(__IGB_DOWN, &adapter->state); |
| 696 | |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 697 | for (i = 0; i < adapter->num_rx_queues; i++) |
| 698 | napi_enable(&adapter->rx_ring[i].napi); |
| 699 | if (adapter->msix_entries) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 700 | igb_configure_msix(adapter); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 701 | |
| 702 | /* Clear any pending interrupts. */ |
| 703 | rd32(E1000_ICR); |
| 704 | igb_irq_enable(adapter); |
| 705 | |
| 706 | /* Fire a link change interrupt to start the watchdog. */ |
| 707 | wr32(E1000_ICS, E1000_ICS_LSC); |
| 708 | return 0; |
| 709 | } |
| 710 | |
| 711 | void igb_down(struct igb_adapter *adapter) |
| 712 | { |
| 713 | struct e1000_hw *hw = &adapter->hw; |
| 714 | struct net_device *netdev = adapter->netdev; |
| 715 | u32 tctl, rctl; |
| 716 | int i; |
| 717 | |
| 718 | /* signal that we're down so the interrupt handler does not |
| 719 | * reschedule our watchdog timer */ |
| 720 | set_bit(__IGB_DOWN, &adapter->state); |
| 721 | |
| 722 | /* disable receives in the hardware */ |
| 723 | rctl = rd32(E1000_RCTL); |
| 724 | wr32(E1000_RCTL, rctl & ~E1000_RCTL_EN); |
| 725 | /* flush and sleep below */ |
| 726 | |
| 727 | netif_stop_queue(netdev); |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 728 | #ifdef CONFIG_NETDEVICES_MULTIQUEUE |
| 729 | for (i = 0; i < adapter->num_tx_queues; i++) |
| 730 | netif_stop_subqueue(netdev, i); |
| 731 | #endif |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 732 | |
| 733 | /* disable transmits in the hardware */ |
| 734 | tctl = rd32(E1000_TCTL); |
| 735 | tctl &= ~E1000_TCTL_EN; |
| 736 | wr32(E1000_TCTL, tctl); |
| 737 | /* flush both disables and wait for them to finish */ |
| 738 | wrfl(); |
| 739 | msleep(10); |
| 740 | |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 741 | for (i = 0; i < adapter->num_rx_queues; i++) |
| 742 | napi_disable(&adapter->rx_ring[i].napi); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 743 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 744 | igb_irq_disable(adapter); |
| 745 | |
| 746 | del_timer_sync(&adapter->watchdog_timer); |
| 747 | del_timer_sync(&adapter->phy_info_timer); |
| 748 | |
| 749 | netdev->tx_queue_len = adapter->tx_queue_len; |
| 750 | netif_carrier_off(netdev); |
| 751 | adapter->link_speed = 0; |
| 752 | adapter->link_duplex = 0; |
| 753 | |
Jeff Kirsher | 3023682 | 2008-06-24 17:01:15 -0700 | [diff] [blame] | 754 | if (!pci_channel_offline(adapter->pdev)) |
| 755 | igb_reset(adapter); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 756 | igb_clean_all_tx_rings(adapter); |
| 757 | igb_clean_all_rx_rings(adapter); |
| 758 | } |
| 759 | |
| 760 | void igb_reinit_locked(struct igb_adapter *adapter) |
| 761 | { |
| 762 | WARN_ON(in_interrupt()); |
| 763 | while (test_and_set_bit(__IGB_RESETTING, &adapter->state)) |
| 764 | msleep(1); |
| 765 | igb_down(adapter); |
| 766 | igb_up(adapter); |
| 767 | clear_bit(__IGB_RESETTING, &adapter->state); |
| 768 | } |
| 769 | |
| 770 | void igb_reset(struct igb_adapter *adapter) |
| 771 | { |
| 772 | struct e1000_hw *hw = &adapter->hw; |
| 773 | struct e1000_fc_info *fc = &adapter->hw.fc; |
| 774 | u32 pba = 0, tx_space, min_tx_space, min_rx_space; |
| 775 | u16 hwm; |
| 776 | |
| 777 | /* Repartition Pba for greater than 9k mtu |
| 778 | * To take effect CTRL.RST is required. |
| 779 | */ |
| 780 | pba = E1000_PBA_34K; |
| 781 | |
| 782 | if (adapter->max_frame_size > ETH_FRAME_LEN + ETH_FCS_LEN) { |
| 783 | /* adjust PBA for jumbo frames */ |
| 784 | wr32(E1000_PBA, pba); |
| 785 | |
| 786 | /* To maintain wire speed transmits, the Tx FIFO should be |
| 787 | * large enough to accommodate two full transmit packets, |
| 788 | * rounded up to the next 1KB and expressed in KB. Likewise, |
| 789 | * the Rx FIFO should be large enough to accommodate at least |
| 790 | * one full receive packet and is similarly rounded up and |
| 791 | * expressed in KB. */ |
| 792 | pba = rd32(E1000_PBA); |
| 793 | /* upper 16 bits has Tx packet buffer allocation size in KB */ |
| 794 | tx_space = pba >> 16; |
| 795 | /* lower 16 bits has Rx packet buffer allocation size in KB */ |
| 796 | pba &= 0xffff; |
| 797 | /* the tx fifo also stores 16 bytes of information about the tx |
| 798 | * but don't include ethernet FCS because hardware appends it */ |
| 799 | min_tx_space = (adapter->max_frame_size + |
| 800 | sizeof(struct e1000_tx_desc) - |
| 801 | ETH_FCS_LEN) * 2; |
| 802 | min_tx_space = ALIGN(min_tx_space, 1024); |
| 803 | min_tx_space >>= 10; |
| 804 | /* software strips receive CRC, so leave room for it */ |
| 805 | min_rx_space = adapter->max_frame_size; |
| 806 | min_rx_space = ALIGN(min_rx_space, 1024); |
| 807 | min_rx_space >>= 10; |
| 808 | |
| 809 | /* If current Tx allocation is less than the min Tx FIFO size, |
| 810 | * and the min Tx FIFO size is less than the current Rx FIFO |
| 811 | * allocation, take space away from current Rx allocation */ |
| 812 | if (tx_space < min_tx_space && |
| 813 | ((min_tx_space - tx_space) < pba)) { |
| 814 | pba = pba - (min_tx_space - tx_space); |
| 815 | |
| 816 | /* if short on rx space, rx wins and must trump tx |
| 817 | * adjustment */ |
| 818 | if (pba < min_rx_space) |
| 819 | pba = min_rx_space; |
| 820 | } |
| 821 | } |
| 822 | wr32(E1000_PBA, pba); |
| 823 | |
| 824 | /* flow control settings */ |
| 825 | /* The high water mark must be low enough to fit one full frame |
| 826 | * (or the size used for early receive) above it in the Rx FIFO. |
| 827 | * Set it to the lower of: |
| 828 | * - 90% of the Rx FIFO size, or |
| 829 | * - the full Rx FIFO size minus one full frame */ |
| 830 | hwm = min(((pba << 10) * 9 / 10), |
| 831 | ((pba << 10) - adapter->max_frame_size)); |
| 832 | |
| 833 | fc->high_water = hwm & 0xFFF8; /* 8-byte granularity */ |
| 834 | fc->low_water = fc->high_water - 8; |
| 835 | fc->pause_time = 0xFFFF; |
| 836 | fc->send_xon = 1; |
| 837 | fc->type = fc->original_type; |
| 838 | |
| 839 | /* Allow time for pending master requests to run */ |
| 840 | adapter->hw.mac.ops.reset_hw(&adapter->hw); |
| 841 | wr32(E1000_WUC, 0); |
| 842 | |
| 843 | if (adapter->hw.mac.ops.init_hw(&adapter->hw)) |
| 844 | dev_err(&adapter->pdev->dev, "Hardware Error\n"); |
| 845 | |
| 846 | igb_update_mng_vlan(adapter); |
| 847 | |
| 848 | /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */ |
| 849 | wr32(E1000_VET, ETHERNET_IEEE_VLAN_TYPE); |
| 850 | |
| 851 | igb_reset_adaptive(&adapter->hw); |
Bill Hayes | 68707ac | 2008-02-19 10:24:41 -0800 | [diff] [blame] | 852 | if (adapter->hw.phy.ops.get_phy_info) |
| 853 | adapter->hw.phy.ops.get_phy_info(&adapter->hw); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 854 | } |
| 855 | |
| 856 | /** |
Taku Izumi | 42bfd33a | 2008-06-20 12:10:30 +0900 | [diff] [blame] | 857 | * igb_is_need_ioport - determine if an adapter needs ioport resources or not |
| 858 | * @pdev: PCI device information struct |
| 859 | * |
| 860 | * Returns true if an adapter needs ioport resources |
| 861 | **/ |
| 862 | static int igb_is_need_ioport(struct pci_dev *pdev) |
| 863 | { |
| 864 | switch (pdev->device) { |
| 865 | /* Currently there are no adapters that need ioport resources */ |
| 866 | default: |
| 867 | return false; |
| 868 | } |
| 869 | } |
| 870 | |
| 871 | /** |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 872 | * igb_probe - Device Initialization Routine |
| 873 | * @pdev: PCI device information struct |
| 874 | * @ent: entry in igb_pci_tbl |
| 875 | * |
| 876 | * Returns 0 on success, negative on failure |
| 877 | * |
| 878 | * igb_probe initializes an adapter identified by a pci_dev structure. |
| 879 | * The OS initialization, configuring of the adapter private structure, |
| 880 | * and a hardware reset occur. |
| 881 | **/ |
| 882 | static int __devinit igb_probe(struct pci_dev *pdev, |
| 883 | const struct pci_device_id *ent) |
| 884 | { |
| 885 | struct net_device *netdev; |
| 886 | struct igb_adapter *adapter; |
| 887 | struct e1000_hw *hw; |
| 888 | const struct e1000_info *ei = igb_info_tbl[ent->driver_data]; |
| 889 | unsigned long mmio_start, mmio_len; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 890 | int i, err, pci_using_dac; |
| 891 | u16 eeprom_data = 0; |
| 892 | u16 eeprom_apme_mask = IGB_EEPROM_APME; |
| 893 | u32 part_num; |
Taku Izumi | 42bfd33a | 2008-06-20 12:10:30 +0900 | [diff] [blame] | 894 | int bars, need_ioport; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 895 | |
Taku Izumi | 42bfd33a | 2008-06-20 12:10:30 +0900 | [diff] [blame] | 896 | /* do not allocate ioport bars when not needed */ |
| 897 | need_ioport = igb_is_need_ioport(pdev); |
| 898 | if (need_ioport) { |
| 899 | bars = pci_select_bars(pdev, IORESOURCE_MEM | IORESOURCE_IO); |
| 900 | err = pci_enable_device(pdev); |
| 901 | } else { |
| 902 | bars = pci_select_bars(pdev, IORESOURCE_MEM); |
| 903 | err = pci_enable_device_mem(pdev); |
| 904 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 905 | if (err) |
| 906 | return err; |
| 907 | |
| 908 | pci_using_dac = 0; |
| 909 | err = pci_set_dma_mask(pdev, DMA_64BIT_MASK); |
| 910 | if (!err) { |
| 911 | err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK); |
| 912 | if (!err) |
| 913 | pci_using_dac = 1; |
| 914 | } else { |
| 915 | err = pci_set_dma_mask(pdev, DMA_32BIT_MASK); |
| 916 | if (err) { |
| 917 | err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK); |
| 918 | if (err) { |
| 919 | dev_err(&pdev->dev, "No usable DMA " |
| 920 | "configuration, aborting\n"); |
| 921 | goto err_dma; |
| 922 | } |
| 923 | } |
| 924 | } |
| 925 | |
Taku Izumi | 42bfd33a | 2008-06-20 12:10:30 +0900 | [diff] [blame] | 926 | err = pci_request_selected_regions(pdev, bars, igb_driver_name); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 927 | if (err) |
| 928 | goto err_pci_reg; |
| 929 | |
| 930 | pci_set_master(pdev); |
Auke Kok | c682fc2 | 2008-04-23 11:09:34 -0700 | [diff] [blame] | 931 | pci_save_state(pdev); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 932 | |
| 933 | err = -ENOMEM; |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 934 | #ifdef CONFIG_NETDEVICES_MULTIQUEUE |
| 935 | netdev = alloc_etherdev_mq(sizeof(struct igb_adapter), IGB_MAX_TX_QUEUES); |
| 936 | #else |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 937 | netdev = alloc_etherdev(sizeof(struct igb_adapter)); |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 938 | #endif /* CONFIG_NETDEVICES_MULTIQUEUE */ |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 939 | if (!netdev) |
| 940 | goto err_alloc_etherdev; |
| 941 | |
| 942 | SET_NETDEV_DEV(netdev, &pdev->dev); |
| 943 | |
| 944 | pci_set_drvdata(pdev, netdev); |
| 945 | adapter = netdev_priv(netdev); |
| 946 | adapter->netdev = netdev; |
| 947 | adapter->pdev = pdev; |
| 948 | hw = &adapter->hw; |
| 949 | hw->back = adapter; |
| 950 | adapter->msg_enable = NETIF_MSG_DRV | NETIF_MSG_PROBE; |
Taku Izumi | 42bfd33a | 2008-06-20 12:10:30 +0900 | [diff] [blame] | 951 | adapter->bars = bars; |
| 952 | adapter->need_ioport = need_ioport; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 953 | |
| 954 | mmio_start = pci_resource_start(pdev, 0); |
| 955 | mmio_len = pci_resource_len(pdev, 0); |
| 956 | |
| 957 | err = -EIO; |
| 958 | adapter->hw.hw_addr = ioremap(mmio_start, mmio_len); |
| 959 | if (!adapter->hw.hw_addr) |
| 960 | goto err_ioremap; |
| 961 | |
| 962 | netdev->open = &igb_open; |
| 963 | netdev->stop = &igb_close; |
| 964 | netdev->get_stats = &igb_get_stats; |
| 965 | netdev->set_multicast_list = &igb_set_multi; |
| 966 | netdev->set_mac_address = &igb_set_mac; |
| 967 | netdev->change_mtu = &igb_change_mtu; |
| 968 | netdev->do_ioctl = &igb_ioctl; |
| 969 | igb_set_ethtool_ops(netdev); |
| 970 | netdev->tx_timeout = &igb_tx_timeout; |
| 971 | netdev->watchdog_timeo = 5 * HZ; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 972 | netdev->vlan_rx_register = igb_vlan_rx_register; |
| 973 | netdev->vlan_rx_add_vid = igb_vlan_rx_add_vid; |
| 974 | netdev->vlan_rx_kill_vid = igb_vlan_rx_kill_vid; |
| 975 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 976 | netdev->poll_controller = igb_netpoll; |
| 977 | #endif |
| 978 | netdev->hard_start_xmit = &igb_xmit_frame_adv; |
| 979 | |
| 980 | strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1); |
| 981 | |
| 982 | netdev->mem_start = mmio_start; |
| 983 | netdev->mem_end = mmio_start + mmio_len; |
| 984 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 985 | /* PCI config space info */ |
| 986 | hw->vendor_id = pdev->vendor; |
| 987 | hw->device_id = pdev->device; |
| 988 | hw->revision_id = pdev->revision; |
| 989 | hw->subsystem_vendor_id = pdev->subsystem_vendor; |
| 990 | hw->subsystem_device_id = pdev->subsystem_device; |
| 991 | |
| 992 | /* setup the private structure */ |
| 993 | hw->back = adapter; |
| 994 | /* Copy the default MAC, PHY and NVM function pointers */ |
| 995 | memcpy(&hw->mac.ops, ei->mac_ops, sizeof(hw->mac.ops)); |
| 996 | memcpy(&hw->phy.ops, ei->phy_ops, sizeof(hw->phy.ops)); |
| 997 | memcpy(&hw->nvm.ops, ei->nvm_ops, sizeof(hw->nvm.ops)); |
| 998 | /* Initialize skew-specific constants */ |
| 999 | err = ei->get_invariants(hw); |
| 1000 | if (err) |
| 1001 | goto err_hw_init; |
| 1002 | |
| 1003 | err = igb_sw_init(adapter); |
| 1004 | if (err) |
| 1005 | goto err_sw_init; |
| 1006 | |
| 1007 | igb_get_bus_info_pcie(hw); |
| 1008 | |
| 1009 | hw->phy.autoneg_wait_to_complete = false; |
| 1010 | hw->mac.adaptive_ifs = true; |
| 1011 | |
| 1012 | /* Copper options */ |
| 1013 | if (hw->phy.media_type == e1000_media_type_copper) { |
| 1014 | hw->phy.mdix = AUTO_ALL_MODES; |
| 1015 | hw->phy.disable_polarity_correction = false; |
| 1016 | hw->phy.ms_type = e1000_ms_hw_default; |
| 1017 | } |
| 1018 | |
| 1019 | if (igb_check_reset_block(hw)) |
| 1020 | dev_info(&pdev->dev, |
| 1021 | "PHY reset is blocked due to SOL/IDER session.\n"); |
| 1022 | |
| 1023 | netdev->features = NETIF_F_SG | |
| 1024 | NETIF_F_HW_CSUM | |
| 1025 | NETIF_F_HW_VLAN_TX | |
| 1026 | NETIF_F_HW_VLAN_RX | |
| 1027 | NETIF_F_HW_VLAN_FILTER; |
| 1028 | |
| 1029 | netdev->features |= NETIF_F_TSO; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1030 | netdev->features |= NETIF_F_TSO6; |
Jeff Kirsher | 48f29ff | 2008-06-05 04:06:27 -0700 | [diff] [blame] | 1031 | |
| 1032 | netdev->vlan_features |= NETIF_F_TSO; |
| 1033 | netdev->vlan_features |= NETIF_F_TSO6; |
| 1034 | netdev->vlan_features |= NETIF_F_HW_CSUM; |
| 1035 | netdev->vlan_features |= NETIF_F_SG; |
| 1036 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1037 | if (pci_using_dac) |
| 1038 | netdev->features |= NETIF_F_HIGHDMA; |
| 1039 | |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 1040 | #ifdef CONFIG_NETDEVICES_MULTIQUEUE |
| 1041 | netdev->features |= NETIF_F_MULTI_QUEUE; |
| 1042 | #endif |
| 1043 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1044 | netdev->features |= NETIF_F_LLTX; |
| 1045 | adapter->en_mng_pt = igb_enable_mng_pass_thru(&adapter->hw); |
| 1046 | |
| 1047 | /* before reading the NVM, reset the controller to put the device in a |
| 1048 | * known good starting state */ |
| 1049 | hw->mac.ops.reset_hw(hw); |
| 1050 | |
| 1051 | /* make sure the NVM is good */ |
| 1052 | if (igb_validate_nvm_checksum(hw) < 0) { |
| 1053 | dev_err(&pdev->dev, "The NVM Checksum Is Not Valid\n"); |
| 1054 | err = -EIO; |
| 1055 | goto err_eeprom; |
| 1056 | } |
| 1057 | |
| 1058 | /* copy the MAC address out of the NVM */ |
| 1059 | if (hw->mac.ops.read_mac_addr(hw)) |
| 1060 | dev_err(&pdev->dev, "NVM Read Error\n"); |
| 1061 | |
| 1062 | memcpy(netdev->dev_addr, hw->mac.addr, netdev->addr_len); |
| 1063 | memcpy(netdev->perm_addr, hw->mac.addr, netdev->addr_len); |
| 1064 | |
| 1065 | if (!is_valid_ether_addr(netdev->perm_addr)) { |
| 1066 | dev_err(&pdev->dev, "Invalid MAC Address\n"); |
| 1067 | err = -EIO; |
| 1068 | goto err_eeprom; |
| 1069 | } |
| 1070 | |
| 1071 | init_timer(&adapter->watchdog_timer); |
| 1072 | adapter->watchdog_timer.function = &igb_watchdog; |
| 1073 | adapter->watchdog_timer.data = (unsigned long) adapter; |
| 1074 | |
| 1075 | init_timer(&adapter->phy_info_timer); |
| 1076 | adapter->phy_info_timer.function = &igb_update_phy_info; |
| 1077 | adapter->phy_info_timer.data = (unsigned long) adapter; |
| 1078 | |
| 1079 | INIT_WORK(&adapter->reset_task, igb_reset_task); |
| 1080 | INIT_WORK(&adapter->watchdog_task, igb_watchdog_task); |
| 1081 | |
| 1082 | /* Initialize link & ring properties that are user-changeable */ |
| 1083 | adapter->tx_ring->count = 256; |
| 1084 | for (i = 0; i < adapter->num_tx_queues; i++) |
| 1085 | adapter->tx_ring[i].count = adapter->tx_ring->count; |
| 1086 | adapter->rx_ring->count = 256; |
| 1087 | for (i = 0; i < adapter->num_rx_queues; i++) |
| 1088 | adapter->rx_ring[i].count = adapter->rx_ring->count; |
| 1089 | |
| 1090 | adapter->fc_autoneg = true; |
| 1091 | hw->mac.autoneg = true; |
| 1092 | hw->phy.autoneg_advertised = 0x2f; |
| 1093 | |
| 1094 | hw->fc.original_type = e1000_fc_default; |
| 1095 | hw->fc.type = e1000_fc_default; |
| 1096 | |
| 1097 | adapter->itr_setting = 3; |
| 1098 | adapter->itr = IGB_START_ITR; |
| 1099 | |
| 1100 | igb_validate_mdi_setting(hw); |
| 1101 | |
| 1102 | adapter->rx_csum = 1; |
| 1103 | |
| 1104 | /* Initial Wake on LAN setting If APM wake is enabled in the EEPROM, |
| 1105 | * enable the ACPI Magic Packet filter |
| 1106 | */ |
| 1107 | |
| 1108 | if (hw->bus.func == 0 || |
| 1109 | hw->device_id == E1000_DEV_ID_82575EB_COPPER) |
| 1110 | hw->nvm.ops.read_nvm(hw, NVM_INIT_CONTROL3_PORT_A, 1, |
| 1111 | &eeprom_data); |
| 1112 | |
| 1113 | if (eeprom_data & eeprom_apme_mask) |
| 1114 | adapter->eeprom_wol |= E1000_WUFC_MAG; |
| 1115 | |
| 1116 | /* now that we have the eeprom settings, apply the special cases where |
| 1117 | * the eeprom may be wrong or the board simply won't support wake on |
| 1118 | * lan on a particular port */ |
| 1119 | switch (pdev->device) { |
| 1120 | case E1000_DEV_ID_82575GB_QUAD_COPPER: |
| 1121 | adapter->eeprom_wol = 0; |
| 1122 | break; |
| 1123 | case E1000_DEV_ID_82575EB_FIBER_SERDES: |
| 1124 | /* Wake events only supported on port A for dual fiber |
| 1125 | * regardless of eeprom setting */ |
| 1126 | if (rd32(E1000_STATUS) & E1000_STATUS_FUNC_1) |
| 1127 | adapter->eeprom_wol = 0; |
| 1128 | break; |
| 1129 | } |
| 1130 | |
| 1131 | /* initialize the wol settings based on the eeprom settings */ |
| 1132 | adapter->wol = adapter->eeprom_wol; |
| 1133 | |
| 1134 | /* reset the hardware with the new settings */ |
| 1135 | igb_reset(adapter); |
| 1136 | |
| 1137 | /* let the f/w know that the h/w is now under the control of the |
| 1138 | * driver. */ |
| 1139 | igb_get_hw_control(adapter); |
| 1140 | |
| 1141 | /* tell the stack to leave us alone until igb_open() is called */ |
| 1142 | netif_carrier_off(netdev); |
| 1143 | netif_stop_queue(netdev); |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 1144 | #ifdef CONFIG_NETDEVICES_MULTIQUEUE |
| 1145 | for (i = 0; i < adapter->num_tx_queues; i++) |
| 1146 | netif_stop_subqueue(netdev, i); |
| 1147 | #endif |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1148 | |
| 1149 | strcpy(netdev->name, "eth%d"); |
| 1150 | err = register_netdev(netdev); |
| 1151 | if (err) |
| 1152 | goto err_register; |
| 1153 | |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame^] | 1154 | #ifdef CONFIG_DCA |
| 1155 | if (dca_add_requester(&pdev->dev) == 0) { |
| 1156 | adapter->dca_enabled = true; |
| 1157 | dev_info(&pdev->dev, "DCA enabled\n"); |
| 1158 | /* Always use CB2 mode, difference is masked |
| 1159 | * in the CB driver. */ |
| 1160 | wr32(E1000_DCA_CTRL, 2); |
| 1161 | igb_setup_dca(adapter); |
| 1162 | } |
| 1163 | #endif |
| 1164 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1165 | dev_info(&pdev->dev, "Intel(R) Gigabit Ethernet Network Connection\n"); |
| 1166 | /* print bus type/speed/width info */ |
| 1167 | dev_info(&pdev->dev, |
| 1168 | "%s: (PCIe:%s:%s) %02x:%02x:%02x:%02x:%02x:%02x\n", |
| 1169 | netdev->name, |
| 1170 | ((hw->bus.speed == e1000_bus_speed_2500) |
| 1171 | ? "2.5Gb/s" : "unknown"), |
| 1172 | ((hw->bus.width == e1000_bus_width_pcie_x4) |
| 1173 | ? "Width x4" : (hw->bus.width == e1000_bus_width_pcie_x1) |
| 1174 | ? "Width x1" : "unknown"), |
| 1175 | netdev->dev_addr[0], netdev->dev_addr[1], netdev->dev_addr[2], |
| 1176 | netdev->dev_addr[3], netdev->dev_addr[4], netdev->dev_addr[5]); |
| 1177 | |
| 1178 | igb_read_part_num(hw, &part_num); |
| 1179 | dev_info(&pdev->dev, "%s: PBA No: %06x-%03x\n", netdev->name, |
| 1180 | (part_num >> 8), (part_num & 0xff)); |
| 1181 | |
| 1182 | dev_info(&pdev->dev, |
| 1183 | "Using %s interrupts. %d rx queue(s), %d tx queue(s)\n", |
| 1184 | adapter->msix_entries ? "MSI-X" : |
| 1185 | adapter->msi_enabled ? "MSI" : "legacy", |
| 1186 | adapter->num_rx_queues, adapter->num_tx_queues); |
| 1187 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1188 | return 0; |
| 1189 | |
| 1190 | err_register: |
| 1191 | igb_release_hw_control(adapter); |
| 1192 | err_eeprom: |
| 1193 | if (!igb_check_reset_block(hw)) |
| 1194 | hw->phy.ops.reset_phy(hw); |
| 1195 | |
| 1196 | if (hw->flash_address) |
| 1197 | iounmap(hw->flash_address); |
| 1198 | |
| 1199 | igb_remove_device(hw); |
| 1200 | kfree(adapter->tx_ring); |
| 1201 | kfree(adapter->rx_ring); |
| 1202 | err_sw_init: |
| 1203 | err_hw_init: |
| 1204 | iounmap(hw->hw_addr); |
| 1205 | err_ioremap: |
| 1206 | free_netdev(netdev); |
| 1207 | err_alloc_etherdev: |
Taku Izumi | 42bfd33a | 2008-06-20 12:10:30 +0900 | [diff] [blame] | 1208 | pci_release_selected_regions(pdev, bars); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1209 | err_pci_reg: |
| 1210 | err_dma: |
| 1211 | pci_disable_device(pdev); |
| 1212 | return err; |
| 1213 | } |
| 1214 | |
| 1215 | /** |
| 1216 | * igb_remove - Device Removal Routine |
| 1217 | * @pdev: PCI device information struct |
| 1218 | * |
| 1219 | * igb_remove is called by the PCI subsystem to alert the driver |
| 1220 | * that it should release a PCI device. The could be caused by a |
| 1221 | * Hot-Plug event, or because the driver is going to be removed from |
| 1222 | * memory. |
| 1223 | **/ |
| 1224 | static void __devexit igb_remove(struct pci_dev *pdev) |
| 1225 | { |
| 1226 | struct net_device *netdev = pci_get_drvdata(pdev); |
| 1227 | struct igb_adapter *adapter = netdev_priv(netdev); |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame^] | 1228 | struct e1000_hw *hw = &adapter->hw; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1229 | |
| 1230 | /* flush_scheduled work may reschedule our watchdog task, so |
| 1231 | * explicitly disable watchdog tasks from being rescheduled */ |
| 1232 | set_bit(__IGB_DOWN, &adapter->state); |
| 1233 | del_timer_sync(&adapter->watchdog_timer); |
| 1234 | del_timer_sync(&adapter->phy_info_timer); |
| 1235 | |
| 1236 | flush_scheduled_work(); |
| 1237 | |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame^] | 1238 | #ifdef CONFIG_DCA |
| 1239 | if (adapter->dca_enabled) { |
| 1240 | dev_info(&pdev->dev, "DCA disabled\n"); |
| 1241 | dca_remove_requester(&pdev->dev); |
| 1242 | adapter->dca_enabled = false; |
| 1243 | wr32(E1000_DCA_CTRL, 1); |
| 1244 | } |
| 1245 | #endif |
| 1246 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1247 | /* Release control of h/w to f/w. If f/w is AMT enabled, this |
| 1248 | * would have already happened in close and is redundant. */ |
| 1249 | igb_release_hw_control(adapter); |
| 1250 | |
| 1251 | unregister_netdev(netdev); |
| 1252 | |
| 1253 | if (!igb_check_reset_block(&adapter->hw)) |
| 1254 | adapter->hw.phy.ops.reset_phy(&adapter->hw); |
| 1255 | |
| 1256 | igb_remove_device(&adapter->hw); |
| 1257 | igb_reset_interrupt_capability(adapter); |
| 1258 | |
| 1259 | kfree(adapter->tx_ring); |
| 1260 | kfree(adapter->rx_ring); |
| 1261 | |
| 1262 | iounmap(adapter->hw.hw_addr); |
| 1263 | if (adapter->hw.flash_address) |
| 1264 | iounmap(adapter->hw.flash_address); |
Taku Izumi | 42bfd33a | 2008-06-20 12:10:30 +0900 | [diff] [blame] | 1265 | pci_release_selected_regions(pdev, adapter->bars); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1266 | |
| 1267 | free_netdev(netdev); |
| 1268 | |
| 1269 | pci_disable_device(pdev); |
| 1270 | } |
| 1271 | |
| 1272 | /** |
| 1273 | * igb_sw_init - Initialize general software structures (struct igb_adapter) |
| 1274 | * @adapter: board private structure to initialize |
| 1275 | * |
| 1276 | * igb_sw_init initializes the Adapter private data structure. |
| 1277 | * Fields are initialized based on PCI device information and |
| 1278 | * OS network device settings (MTU size). |
| 1279 | **/ |
| 1280 | static int __devinit igb_sw_init(struct igb_adapter *adapter) |
| 1281 | { |
| 1282 | struct e1000_hw *hw = &adapter->hw; |
| 1283 | struct net_device *netdev = adapter->netdev; |
| 1284 | struct pci_dev *pdev = adapter->pdev; |
| 1285 | |
| 1286 | pci_read_config_word(pdev, PCI_COMMAND, &hw->bus.pci_cmd_word); |
| 1287 | |
| 1288 | adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE; |
| 1289 | adapter->rx_ps_hdr_size = 0; /* disable packet split */ |
| 1290 | adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN; |
| 1291 | adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN; |
| 1292 | |
| 1293 | /* Number of supported queues. */ |
| 1294 | /* Having more queues than CPUs doesn't make sense. */ |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 1295 | adapter->num_rx_queues = min((u32)IGB_MAX_RX_QUEUES, (u32)num_online_cpus()); |
| 1296 | #ifdef CONFIG_NETDEVICES_MULTIQUEUE |
| 1297 | adapter->num_tx_queues = min(IGB_MAX_TX_QUEUES, num_online_cpus()); |
| 1298 | #else |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1299 | adapter->num_tx_queues = 1; |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 1300 | #endif /* CONFIG_NET_MULTI_QUEUE_DEVICE */ |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1301 | |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 1302 | /* This call may decrease the number of queues depending on |
| 1303 | * interrupt mode. */ |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1304 | igb_set_interrupt_capability(adapter); |
| 1305 | |
| 1306 | if (igb_alloc_queues(adapter)) { |
| 1307 | dev_err(&pdev->dev, "Unable to allocate memory for queues\n"); |
| 1308 | return -ENOMEM; |
| 1309 | } |
| 1310 | |
| 1311 | /* Explicitly disable IRQ since the NIC can be in any state. */ |
| 1312 | igb_irq_disable(adapter); |
| 1313 | |
| 1314 | set_bit(__IGB_DOWN, &adapter->state); |
| 1315 | return 0; |
| 1316 | } |
| 1317 | |
| 1318 | /** |
| 1319 | * igb_open - Called when a network interface is made active |
| 1320 | * @netdev: network interface device structure |
| 1321 | * |
| 1322 | * Returns 0 on success, negative value on failure |
| 1323 | * |
| 1324 | * The open entry point is called when a network interface is made |
| 1325 | * active by the system (IFF_UP). At this point all resources needed |
| 1326 | * for transmit and receive operations are allocated, the interrupt |
| 1327 | * handler is registered with the OS, the watchdog timer is started, |
| 1328 | * and the stack is notified that the interface is ready. |
| 1329 | **/ |
| 1330 | static int igb_open(struct net_device *netdev) |
| 1331 | { |
| 1332 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 1333 | struct e1000_hw *hw = &adapter->hw; |
| 1334 | int err; |
| 1335 | int i; |
| 1336 | |
| 1337 | /* disallow open during test */ |
| 1338 | if (test_bit(__IGB_TESTING, &adapter->state)) |
| 1339 | return -EBUSY; |
| 1340 | |
| 1341 | /* allocate transmit descriptors */ |
| 1342 | err = igb_setup_all_tx_resources(adapter); |
| 1343 | if (err) |
| 1344 | goto err_setup_tx; |
| 1345 | |
| 1346 | /* allocate receive descriptors */ |
| 1347 | err = igb_setup_all_rx_resources(adapter); |
| 1348 | if (err) |
| 1349 | goto err_setup_rx; |
| 1350 | |
| 1351 | /* e1000_power_up_phy(adapter); */ |
| 1352 | |
| 1353 | adapter->mng_vlan_id = IGB_MNG_VLAN_NONE; |
| 1354 | if ((adapter->hw.mng_cookie.status & |
| 1355 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN)) |
| 1356 | igb_update_mng_vlan(adapter); |
| 1357 | |
| 1358 | /* before we allocate an interrupt, we must be ready to handle it. |
| 1359 | * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt |
| 1360 | * as soon as we call pci_request_irq, so we have to setup our |
| 1361 | * clean_rx handler before we do so. */ |
| 1362 | igb_configure(adapter); |
| 1363 | |
| 1364 | err = igb_request_irq(adapter); |
| 1365 | if (err) |
| 1366 | goto err_req_irq; |
| 1367 | |
| 1368 | /* From here on the code is the same as igb_up() */ |
| 1369 | clear_bit(__IGB_DOWN, &adapter->state); |
| 1370 | |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 1371 | for (i = 0; i < adapter->num_rx_queues; i++) |
| 1372 | napi_enable(&adapter->rx_ring[i].napi); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1373 | |
| 1374 | /* Clear any pending interrupts. */ |
| 1375 | rd32(E1000_ICR); |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 1376 | |
| 1377 | igb_irq_enable(adapter); |
| 1378 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1379 | /* Fire a link status change interrupt to start the watchdog. */ |
| 1380 | wr32(E1000_ICS, E1000_ICS_LSC); |
| 1381 | |
| 1382 | return 0; |
| 1383 | |
| 1384 | err_req_irq: |
| 1385 | igb_release_hw_control(adapter); |
| 1386 | /* e1000_power_down_phy(adapter); */ |
| 1387 | igb_free_all_rx_resources(adapter); |
| 1388 | err_setup_rx: |
| 1389 | igb_free_all_tx_resources(adapter); |
| 1390 | err_setup_tx: |
| 1391 | igb_reset(adapter); |
| 1392 | |
| 1393 | return err; |
| 1394 | } |
| 1395 | |
| 1396 | /** |
| 1397 | * igb_close - Disables a network interface |
| 1398 | * @netdev: network interface device structure |
| 1399 | * |
| 1400 | * Returns 0, this is not allowed to fail |
| 1401 | * |
| 1402 | * The close entry point is called when an interface is de-activated |
| 1403 | * by the OS. The hardware is still under the driver's control, but |
| 1404 | * needs to be disabled. A global MAC reset is issued to stop the |
| 1405 | * hardware, and all transmit and receive resources are freed. |
| 1406 | **/ |
| 1407 | static int igb_close(struct net_device *netdev) |
| 1408 | { |
| 1409 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 1410 | |
| 1411 | WARN_ON(test_bit(__IGB_RESETTING, &adapter->state)); |
| 1412 | igb_down(adapter); |
| 1413 | |
| 1414 | igb_free_irq(adapter); |
| 1415 | |
| 1416 | igb_free_all_tx_resources(adapter); |
| 1417 | igb_free_all_rx_resources(adapter); |
| 1418 | |
| 1419 | /* kill manageability vlan ID if supported, but not if a vlan with |
| 1420 | * the same ID is registered on the host OS (let 8021q kill it) */ |
| 1421 | if ((adapter->hw.mng_cookie.status & |
| 1422 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN) && |
| 1423 | !(adapter->vlgrp && |
| 1424 | vlan_group_get_device(adapter->vlgrp, adapter->mng_vlan_id))) |
| 1425 | igb_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); |
| 1426 | |
| 1427 | return 0; |
| 1428 | } |
| 1429 | |
| 1430 | /** |
| 1431 | * igb_setup_tx_resources - allocate Tx resources (Descriptors) |
| 1432 | * @adapter: board private structure |
| 1433 | * @tx_ring: tx descriptor ring (for a specific queue) to setup |
| 1434 | * |
| 1435 | * Return 0 on success, negative on failure |
| 1436 | **/ |
| 1437 | |
| 1438 | int igb_setup_tx_resources(struct igb_adapter *adapter, |
| 1439 | struct igb_ring *tx_ring) |
| 1440 | { |
| 1441 | struct pci_dev *pdev = adapter->pdev; |
| 1442 | int size; |
| 1443 | |
| 1444 | size = sizeof(struct igb_buffer) * tx_ring->count; |
| 1445 | tx_ring->buffer_info = vmalloc(size); |
| 1446 | if (!tx_ring->buffer_info) |
| 1447 | goto err; |
| 1448 | memset(tx_ring->buffer_info, 0, size); |
| 1449 | |
| 1450 | /* round up to nearest 4K */ |
| 1451 | tx_ring->size = tx_ring->count * sizeof(struct e1000_tx_desc) |
| 1452 | + sizeof(u32); |
| 1453 | tx_ring->size = ALIGN(tx_ring->size, 4096); |
| 1454 | |
| 1455 | tx_ring->desc = pci_alloc_consistent(pdev, tx_ring->size, |
| 1456 | &tx_ring->dma); |
| 1457 | |
| 1458 | if (!tx_ring->desc) |
| 1459 | goto err; |
| 1460 | |
| 1461 | tx_ring->adapter = adapter; |
| 1462 | tx_ring->next_to_use = 0; |
| 1463 | tx_ring->next_to_clean = 0; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1464 | return 0; |
| 1465 | |
| 1466 | err: |
| 1467 | vfree(tx_ring->buffer_info); |
| 1468 | dev_err(&adapter->pdev->dev, |
| 1469 | "Unable to allocate memory for the transmit descriptor ring\n"); |
| 1470 | return -ENOMEM; |
| 1471 | } |
| 1472 | |
| 1473 | /** |
| 1474 | * igb_setup_all_tx_resources - wrapper to allocate Tx resources |
| 1475 | * (Descriptors) for all queues |
| 1476 | * @adapter: board private structure |
| 1477 | * |
| 1478 | * Return 0 on success, negative on failure |
| 1479 | **/ |
| 1480 | static int igb_setup_all_tx_resources(struct igb_adapter *adapter) |
| 1481 | { |
| 1482 | int i, err = 0; |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 1483 | #ifdef CONFIG_NETDEVICES_MULTIQUEUE |
| 1484 | int r_idx; |
| 1485 | #endif |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1486 | |
| 1487 | for (i = 0; i < adapter->num_tx_queues; i++) { |
| 1488 | err = igb_setup_tx_resources(adapter, &adapter->tx_ring[i]); |
| 1489 | if (err) { |
| 1490 | dev_err(&adapter->pdev->dev, |
| 1491 | "Allocation for Tx Queue %u failed\n", i); |
| 1492 | for (i--; i >= 0; i--) |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 1493 | igb_free_tx_resources(&adapter->tx_ring[i]); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1494 | break; |
| 1495 | } |
| 1496 | } |
| 1497 | |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 1498 | #ifdef CONFIG_NETDEVICES_MULTIQUEUE |
| 1499 | for (i = 0; i < IGB_MAX_TX_QUEUES; i++) { |
| 1500 | r_idx = i % adapter->num_tx_queues; |
| 1501 | adapter->multi_tx_table[i] = &adapter->tx_ring[r_idx]; |
| 1502 | } |
| 1503 | #endif |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1504 | return err; |
| 1505 | } |
| 1506 | |
| 1507 | /** |
| 1508 | * igb_configure_tx - Configure transmit Unit after Reset |
| 1509 | * @adapter: board private structure |
| 1510 | * |
| 1511 | * Configure the Tx unit of the MAC after a reset. |
| 1512 | **/ |
| 1513 | static void igb_configure_tx(struct igb_adapter *adapter) |
| 1514 | { |
| 1515 | u64 tdba, tdwba; |
| 1516 | struct e1000_hw *hw = &adapter->hw; |
| 1517 | u32 tctl; |
| 1518 | u32 txdctl, txctrl; |
| 1519 | int i; |
| 1520 | |
| 1521 | for (i = 0; i < adapter->num_tx_queues; i++) { |
| 1522 | struct igb_ring *ring = &(adapter->tx_ring[i]); |
| 1523 | |
| 1524 | wr32(E1000_TDLEN(i), |
| 1525 | ring->count * sizeof(struct e1000_tx_desc)); |
| 1526 | tdba = ring->dma; |
| 1527 | wr32(E1000_TDBAL(i), |
| 1528 | tdba & 0x00000000ffffffffULL); |
| 1529 | wr32(E1000_TDBAH(i), tdba >> 32); |
| 1530 | |
| 1531 | tdwba = ring->dma + ring->count * sizeof(struct e1000_tx_desc); |
| 1532 | tdwba |= 1; /* enable head wb */ |
| 1533 | wr32(E1000_TDWBAL(i), |
| 1534 | tdwba & 0x00000000ffffffffULL); |
| 1535 | wr32(E1000_TDWBAH(i), tdwba >> 32); |
| 1536 | |
| 1537 | ring->head = E1000_TDH(i); |
| 1538 | ring->tail = E1000_TDT(i); |
| 1539 | writel(0, hw->hw_addr + ring->tail); |
| 1540 | writel(0, hw->hw_addr + ring->head); |
| 1541 | txdctl = rd32(E1000_TXDCTL(i)); |
| 1542 | txdctl |= E1000_TXDCTL_QUEUE_ENABLE; |
| 1543 | wr32(E1000_TXDCTL(i), txdctl); |
| 1544 | |
| 1545 | /* Turn off Relaxed Ordering on head write-backs. The |
| 1546 | * writebacks MUST be delivered in order or it will |
| 1547 | * completely screw up our bookeeping. |
| 1548 | */ |
| 1549 | txctrl = rd32(E1000_DCA_TXCTRL(i)); |
| 1550 | txctrl &= ~E1000_DCA_TXCTRL_TX_WB_RO_EN; |
| 1551 | wr32(E1000_DCA_TXCTRL(i), txctrl); |
| 1552 | } |
| 1553 | |
| 1554 | |
| 1555 | |
| 1556 | /* Use the default values for the Tx Inter Packet Gap (IPG) timer */ |
| 1557 | |
| 1558 | /* Program the Transmit Control Register */ |
| 1559 | |
| 1560 | tctl = rd32(E1000_TCTL); |
| 1561 | tctl &= ~E1000_TCTL_CT; |
| 1562 | tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC | |
| 1563 | (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT); |
| 1564 | |
| 1565 | igb_config_collision_dist(hw); |
| 1566 | |
| 1567 | /* Setup Transmit Descriptor Settings for eop descriptor */ |
| 1568 | adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_RS; |
| 1569 | |
| 1570 | /* Enable transmits */ |
| 1571 | tctl |= E1000_TCTL_EN; |
| 1572 | |
| 1573 | wr32(E1000_TCTL, tctl); |
| 1574 | } |
| 1575 | |
| 1576 | /** |
| 1577 | * igb_setup_rx_resources - allocate Rx resources (Descriptors) |
| 1578 | * @adapter: board private structure |
| 1579 | * @rx_ring: rx descriptor ring (for a specific queue) to setup |
| 1580 | * |
| 1581 | * Returns 0 on success, negative on failure |
| 1582 | **/ |
| 1583 | |
| 1584 | int igb_setup_rx_resources(struct igb_adapter *adapter, |
| 1585 | struct igb_ring *rx_ring) |
| 1586 | { |
| 1587 | struct pci_dev *pdev = adapter->pdev; |
| 1588 | int size, desc_len; |
| 1589 | |
| 1590 | size = sizeof(struct igb_buffer) * rx_ring->count; |
| 1591 | rx_ring->buffer_info = vmalloc(size); |
| 1592 | if (!rx_ring->buffer_info) |
| 1593 | goto err; |
| 1594 | memset(rx_ring->buffer_info, 0, size); |
| 1595 | |
| 1596 | desc_len = sizeof(union e1000_adv_rx_desc); |
| 1597 | |
| 1598 | /* Round up to nearest 4K */ |
| 1599 | rx_ring->size = rx_ring->count * desc_len; |
| 1600 | rx_ring->size = ALIGN(rx_ring->size, 4096); |
| 1601 | |
| 1602 | rx_ring->desc = pci_alloc_consistent(pdev, rx_ring->size, |
| 1603 | &rx_ring->dma); |
| 1604 | |
| 1605 | if (!rx_ring->desc) |
| 1606 | goto err; |
| 1607 | |
| 1608 | rx_ring->next_to_clean = 0; |
| 1609 | rx_ring->next_to_use = 0; |
| 1610 | rx_ring->pending_skb = NULL; |
| 1611 | |
| 1612 | rx_ring->adapter = adapter; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1613 | |
| 1614 | return 0; |
| 1615 | |
| 1616 | err: |
| 1617 | vfree(rx_ring->buffer_info); |
| 1618 | dev_err(&adapter->pdev->dev, "Unable to allocate memory for " |
| 1619 | "the receive descriptor ring\n"); |
| 1620 | return -ENOMEM; |
| 1621 | } |
| 1622 | |
| 1623 | /** |
| 1624 | * igb_setup_all_rx_resources - wrapper to allocate Rx resources |
| 1625 | * (Descriptors) for all queues |
| 1626 | * @adapter: board private structure |
| 1627 | * |
| 1628 | * Return 0 on success, negative on failure |
| 1629 | **/ |
| 1630 | static int igb_setup_all_rx_resources(struct igb_adapter *adapter) |
| 1631 | { |
| 1632 | int i, err = 0; |
| 1633 | |
| 1634 | for (i = 0; i < adapter->num_rx_queues; i++) { |
| 1635 | err = igb_setup_rx_resources(adapter, &adapter->rx_ring[i]); |
| 1636 | if (err) { |
| 1637 | dev_err(&adapter->pdev->dev, |
| 1638 | "Allocation for Rx Queue %u failed\n", i); |
| 1639 | for (i--; i >= 0; i--) |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 1640 | igb_free_rx_resources(&adapter->rx_ring[i]); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1641 | break; |
| 1642 | } |
| 1643 | } |
| 1644 | |
| 1645 | return err; |
| 1646 | } |
| 1647 | |
| 1648 | /** |
| 1649 | * igb_setup_rctl - configure the receive control registers |
| 1650 | * @adapter: Board private structure |
| 1651 | **/ |
| 1652 | static void igb_setup_rctl(struct igb_adapter *adapter) |
| 1653 | { |
| 1654 | struct e1000_hw *hw = &adapter->hw; |
| 1655 | u32 rctl; |
| 1656 | u32 srrctl = 0; |
| 1657 | int i; |
| 1658 | |
| 1659 | rctl = rd32(E1000_RCTL); |
| 1660 | |
| 1661 | rctl &= ~(3 << E1000_RCTL_MO_SHIFT); |
| 1662 | |
| 1663 | rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | |
| 1664 | E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF | |
| 1665 | (adapter->hw.mac.mc_filter_type << E1000_RCTL_MO_SHIFT); |
| 1666 | |
| 1667 | /* disable the stripping of CRC because it breaks |
| 1668 | * BMC firmware connected over SMBUS |
| 1669 | rctl |= E1000_RCTL_SECRC; |
| 1670 | */ |
| 1671 | |
| 1672 | rctl &= ~E1000_RCTL_SBP; |
| 1673 | |
| 1674 | if (adapter->netdev->mtu <= ETH_DATA_LEN) |
| 1675 | rctl &= ~E1000_RCTL_LPE; |
| 1676 | else |
| 1677 | rctl |= E1000_RCTL_LPE; |
| 1678 | if (adapter->rx_buffer_len <= IGB_RXBUFFER_2048) { |
| 1679 | /* Setup buffer sizes */ |
| 1680 | rctl &= ~E1000_RCTL_SZ_4096; |
| 1681 | rctl |= E1000_RCTL_BSEX; |
| 1682 | switch (adapter->rx_buffer_len) { |
| 1683 | case IGB_RXBUFFER_256: |
| 1684 | rctl |= E1000_RCTL_SZ_256; |
| 1685 | rctl &= ~E1000_RCTL_BSEX; |
| 1686 | break; |
| 1687 | case IGB_RXBUFFER_512: |
| 1688 | rctl |= E1000_RCTL_SZ_512; |
| 1689 | rctl &= ~E1000_RCTL_BSEX; |
| 1690 | break; |
| 1691 | case IGB_RXBUFFER_1024: |
| 1692 | rctl |= E1000_RCTL_SZ_1024; |
| 1693 | rctl &= ~E1000_RCTL_BSEX; |
| 1694 | break; |
| 1695 | case IGB_RXBUFFER_2048: |
| 1696 | default: |
| 1697 | rctl |= E1000_RCTL_SZ_2048; |
| 1698 | rctl &= ~E1000_RCTL_BSEX; |
| 1699 | break; |
| 1700 | case IGB_RXBUFFER_4096: |
| 1701 | rctl |= E1000_RCTL_SZ_4096; |
| 1702 | break; |
| 1703 | case IGB_RXBUFFER_8192: |
| 1704 | rctl |= E1000_RCTL_SZ_8192; |
| 1705 | break; |
| 1706 | case IGB_RXBUFFER_16384: |
| 1707 | rctl |= E1000_RCTL_SZ_16384; |
| 1708 | break; |
| 1709 | } |
| 1710 | } else { |
| 1711 | rctl &= ~E1000_RCTL_BSEX; |
| 1712 | srrctl = adapter->rx_buffer_len >> E1000_SRRCTL_BSIZEPKT_SHIFT; |
| 1713 | } |
| 1714 | |
| 1715 | /* 82575 and greater support packet-split where the protocol |
| 1716 | * header is placed in skb->data and the packet data is |
| 1717 | * placed in pages hanging off of skb_shinfo(skb)->nr_frags. |
| 1718 | * In the case of a non-split, skb->data is linearly filled, |
| 1719 | * followed by the page buffers. Therefore, skb->data is |
| 1720 | * sized to hold the largest protocol header. |
| 1721 | */ |
| 1722 | /* allocations using alloc_page take too long for regular MTU |
| 1723 | * so only enable packet split for jumbo frames */ |
| 1724 | if (rctl & E1000_RCTL_LPE) { |
| 1725 | adapter->rx_ps_hdr_size = IGB_RXBUFFER_128; |
| 1726 | srrctl = adapter->rx_ps_hdr_size << |
| 1727 | E1000_SRRCTL_BSIZEHDRSIZE_SHIFT; |
| 1728 | /* buffer size is ALWAYS one page */ |
| 1729 | srrctl |= PAGE_SIZE >> E1000_SRRCTL_BSIZEPKT_SHIFT; |
| 1730 | srrctl |= E1000_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS; |
| 1731 | } else { |
| 1732 | adapter->rx_ps_hdr_size = 0; |
| 1733 | srrctl |= E1000_SRRCTL_DESCTYPE_ADV_ONEBUF; |
| 1734 | } |
| 1735 | |
| 1736 | for (i = 0; i < adapter->num_rx_queues; i++) |
| 1737 | wr32(E1000_SRRCTL(i), srrctl); |
| 1738 | |
| 1739 | wr32(E1000_RCTL, rctl); |
| 1740 | } |
| 1741 | |
| 1742 | /** |
| 1743 | * igb_configure_rx - Configure receive Unit after Reset |
| 1744 | * @adapter: board private structure |
| 1745 | * |
| 1746 | * Configure the Rx unit of the MAC after a reset. |
| 1747 | **/ |
| 1748 | static void igb_configure_rx(struct igb_adapter *adapter) |
| 1749 | { |
| 1750 | u64 rdba; |
| 1751 | struct e1000_hw *hw = &adapter->hw; |
| 1752 | u32 rctl, rxcsum; |
| 1753 | u32 rxdctl; |
| 1754 | int i; |
| 1755 | |
| 1756 | /* disable receives while setting up the descriptors */ |
| 1757 | rctl = rd32(E1000_RCTL); |
| 1758 | wr32(E1000_RCTL, rctl & ~E1000_RCTL_EN); |
| 1759 | wrfl(); |
| 1760 | mdelay(10); |
| 1761 | |
| 1762 | if (adapter->itr_setting > 3) |
| 1763 | wr32(E1000_ITR, |
| 1764 | 1000000000 / (adapter->itr * 256)); |
| 1765 | |
| 1766 | /* Setup the HW Rx Head and Tail Descriptor Pointers and |
| 1767 | * the Base and Length of the Rx Descriptor Ring */ |
| 1768 | for (i = 0; i < adapter->num_rx_queues; i++) { |
| 1769 | struct igb_ring *ring = &(adapter->rx_ring[i]); |
| 1770 | rdba = ring->dma; |
| 1771 | wr32(E1000_RDBAL(i), |
| 1772 | rdba & 0x00000000ffffffffULL); |
| 1773 | wr32(E1000_RDBAH(i), rdba >> 32); |
| 1774 | wr32(E1000_RDLEN(i), |
| 1775 | ring->count * sizeof(union e1000_adv_rx_desc)); |
| 1776 | |
| 1777 | ring->head = E1000_RDH(i); |
| 1778 | ring->tail = E1000_RDT(i); |
| 1779 | writel(0, hw->hw_addr + ring->tail); |
| 1780 | writel(0, hw->hw_addr + ring->head); |
| 1781 | |
| 1782 | rxdctl = rd32(E1000_RXDCTL(i)); |
| 1783 | rxdctl |= E1000_RXDCTL_QUEUE_ENABLE; |
| 1784 | rxdctl &= 0xFFF00000; |
| 1785 | rxdctl |= IGB_RX_PTHRESH; |
| 1786 | rxdctl |= IGB_RX_HTHRESH << 8; |
| 1787 | rxdctl |= IGB_RX_WTHRESH << 16; |
| 1788 | wr32(E1000_RXDCTL(i), rxdctl); |
| 1789 | } |
| 1790 | |
| 1791 | if (adapter->num_rx_queues > 1) { |
| 1792 | u32 random[10]; |
| 1793 | u32 mrqc; |
| 1794 | u32 j, shift; |
| 1795 | union e1000_reta { |
| 1796 | u32 dword; |
| 1797 | u8 bytes[4]; |
| 1798 | } reta; |
| 1799 | |
| 1800 | get_random_bytes(&random[0], 40); |
| 1801 | |
| 1802 | shift = 6; |
| 1803 | for (j = 0; j < (32 * 4); j++) { |
| 1804 | reta.bytes[j & 3] = |
| 1805 | (j % adapter->num_rx_queues) << shift; |
| 1806 | if ((j & 3) == 3) |
| 1807 | writel(reta.dword, |
| 1808 | hw->hw_addr + E1000_RETA(0) + (j & ~3)); |
| 1809 | } |
| 1810 | mrqc = E1000_MRQC_ENABLE_RSS_4Q; |
| 1811 | |
| 1812 | /* Fill out hash function seeds */ |
| 1813 | for (j = 0; j < 10; j++) |
| 1814 | array_wr32(E1000_RSSRK(0), j, random[j]); |
| 1815 | |
| 1816 | mrqc |= (E1000_MRQC_RSS_FIELD_IPV4 | |
| 1817 | E1000_MRQC_RSS_FIELD_IPV4_TCP); |
| 1818 | mrqc |= (E1000_MRQC_RSS_FIELD_IPV6 | |
| 1819 | E1000_MRQC_RSS_FIELD_IPV6_TCP); |
| 1820 | mrqc |= (E1000_MRQC_RSS_FIELD_IPV4_UDP | |
| 1821 | E1000_MRQC_RSS_FIELD_IPV6_UDP); |
| 1822 | mrqc |= (E1000_MRQC_RSS_FIELD_IPV6_UDP_EX | |
| 1823 | E1000_MRQC_RSS_FIELD_IPV6_TCP_EX); |
| 1824 | |
| 1825 | |
| 1826 | wr32(E1000_MRQC, mrqc); |
| 1827 | |
| 1828 | /* Multiqueue and raw packet checksumming are mutually |
| 1829 | * exclusive. Note that this not the same as TCP/IP |
| 1830 | * checksumming, which works fine. */ |
| 1831 | rxcsum = rd32(E1000_RXCSUM); |
| 1832 | rxcsum |= E1000_RXCSUM_PCSD; |
| 1833 | wr32(E1000_RXCSUM, rxcsum); |
| 1834 | } else { |
| 1835 | /* Enable Receive Checksum Offload for TCP and UDP */ |
| 1836 | rxcsum = rd32(E1000_RXCSUM); |
| 1837 | if (adapter->rx_csum) { |
| 1838 | rxcsum |= E1000_RXCSUM_TUOFL; |
| 1839 | |
| 1840 | /* Enable IPv4 payload checksum for UDP fragments |
| 1841 | * Must be used in conjunction with packet-split. */ |
| 1842 | if (adapter->rx_ps_hdr_size) |
| 1843 | rxcsum |= E1000_RXCSUM_IPPCSE; |
| 1844 | } else { |
| 1845 | rxcsum &= ~E1000_RXCSUM_TUOFL; |
| 1846 | /* don't need to clear IPPCSE as it defaults to 0 */ |
| 1847 | } |
| 1848 | wr32(E1000_RXCSUM, rxcsum); |
| 1849 | } |
| 1850 | |
| 1851 | if (adapter->vlgrp) |
| 1852 | wr32(E1000_RLPML, |
| 1853 | adapter->max_frame_size + VLAN_TAG_SIZE); |
| 1854 | else |
| 1855 | wr32(E1000_RLPML, adapter->max_frame_size); |
| 1856 | |
| 1857 | /* Enable Receives */ |
| 1858 | wr32(E1000_RCTL, rctl); |
| 1859 | } |
| 1860 | |
| 1861 | /** |
| 1862 | * igb_free_tx_resources - Free Tx Resources per Queue |
| 1863 | * @adapter: board private structure |
| 1864 | * @tx_ring: Tx descriptor ring for a specific queue |
| 1865 | * |
| 1866 | * Free all transmit software resources |
| 1867 | **/ |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 1868 | static void igb_free_tx_resources(struct igb_ring *tx_ring) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1869 | { |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 1870 | struct pci_dev *pdev = tx_ring->adapter->pdev; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1871 | |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 1872 | igb_clean_tx_ring(tx_ring); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1873 | |
| 1874 | vfree(tx_ring->buffer_info); |
| 1875 | tx_ring->buffer_info = NULL; |
| 1876 | |
| 1877 | pci_free_consistent(pdev, tx_ring->size, tx_ring->desc, tx_ring->dma); |
| 1878 | |
| 1879 | tx_ring->desc = NULL; |
| 1880 | } |
| 1881 | |
| 1882 | /** |
| 1883 | * igb_free_all_tx_resources - Free Tx Resources for All Queues |
| 1884 | * @adapter: board private structure |
| 1885 | * |
| 1886 | * Free all transmit software resources |
| 1887 | **/ |
| 1888 | static void igb_free_all_tx_resources(struct igb_adapter *adapter) |
| 1889 | { |
| 1890 | int i; |
| 1891 | |
| 1892 | for (i = 0; i < adapter->num_tx_queues; i++) |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 1893 | igb_free_tx_resources(&adapter->tx_ring[i]); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1894 | } |
| 1895 | |
| 1896 | static void igb_unmap_and_free_tx_resource(struct igb_adapter *adapter, |
| 1897 | struct igb_buffer *buffer_info) |
| 1898 | { |
| 1899 | if (buffer_info->dma) { |
| 1900 | pci_unmap_page(adapter->pdev, |
| 1901 | buffer_info->dma, |
| 1902 | buffer_info->length, |
| 1903 | PCI_DMA_TODEVICE); |
| 1904 | buffer_info->dma = 0; |
| 1905 | } |
| 1906 | if (buffer_info->skb) { |
| 1907 | dev_kfree_skb_any(buffer_info->skb); |
| 1908 | buffer_info->skb = NULL; |
| 1909 | } |
| 1910 | buffer_info->time_stamp = 0; |
| 1911 | /* buffer_info must be completely set up in the transmit path */ |
| 1912 | } |
| 1913 | |
| 1914 | /** |
| 1915 | * igb_clean_tx_ring - Free Tx Buffers |
| 1916 | * @adapter: board private structure |
| 1917 | * @tx_ring: ring to be cleaned |
| 1918 | **/ |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 1919 | static void igb_clean_tx_ring(struct igb_ring *tx_ring) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1920 | { |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 1921 | struct igb_adapter *adapter = tx_ring->adapter; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1922 | struct igb_buffer *buffer_info; |
| 1923 | unsigned long size; |
| 1924 | unsigned int i; |
| 1925 | |
| 1926 | if (!tx_ring->buffer_info) |
| 1927 | return; |
| 1928 | /* Free all the Tx ring sk_buffs */ |
| 1929 | |
| 1930 | for (i = 0; i < tx_ring->count; i++) { |
| 1931 | buffer_info = &tx_ring->buffer_info[i]; |
| 1932 | igb_unmap_and_free_tx_resource(adapter, buffer_info); |
| 1933 | } |
| 1934 | |
| 1935 | size = sizeof(struct igb_buffer) * tx_ring->count; |
| 1936 | memset(tx_ring->buffer_info, 0, size); |
| 1937 | |
| 1938 | /* Zero out the descriptor ring */ |
| 1939 | |
| 1940 | memset(tx_ring->desc, 0, tx_ring->size); |
| 1941 | |
| 1942 | tx_ring->next_to_use = 0; |
| 1943 | tx_ring->next_to_clean = 0; |
| 1944 | |
| 1945 | writel(0, adapter->hw.hw_addr + tx_ring->head); |
| 1946 | writel(0, adapter->hw.hw_addr + tx_ring->tail); |
| 1947 | } |
| 1948 | |
| 1949 | /** |
| 1950 | * igb_clean_all_tx_rings - Free Tx Buffers for all queues |
| 1951 | * @adapter: board private structure |
| 1952 | **/ |
| 1953 | static void igb_clean_all_tx_rings(struct igb_adapter *adapter) |
| 1954 | { |
| 1955 | int i; |
| 1956 | |
| 1957 | for (i = 0; i < adapter->num_tx_queues; i++) |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 1958 | igb_clean_tx_ring(&adapter->tx_ring[i]); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1959 | } |
| 1960 | |
| 1961 | /** |
| 1962 | * igb_free_rx_resources - Free Rx Resources |
| 1963 | * @adapter: board private structure |
| 1964 | * @rx_ring: ring to clean the resources from |
| 1965 | * |
| 1966 | * Free all receive software resources |
| 1967 | **/ |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 1968 | static void igb_free_rx_resources(struct igb_ring *rx_ring) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1969 | { |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 1970 | struct pci_dev *pdev = rx_ring->adapter->pdev; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1971 | |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 1972 | igb_clean_rx_ring(rx_ring); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1973 | |
| 1974 | vfree(rx_ring->buffer_info); |
| 1975 | rx_ring->buffer_info = NULL; |
| 1976 | |
| 1977 | pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma); |
| 1978 | |
| 1979 | rx_ring->desc = NULL; |
| 1980 | } |
| 1981 | |
| 1982 | /** |
| 1983 | * igb_free_all_rx_resources - Free Rx Resources for All Queues |
| 1984 | * @adapter: board private structure |
| 1985 | * |
| 1986 | * Free all receive software resources |
| 1987 | **/ |
| 1988 | static void igb_free_all_rx_resources(struct igb_adapter *adapter) |
| 1989 | { |
| 1990 | int i; |
| 1991 | |
| 1992 | for (i = 0; i < adapter->num_rx_queues; i++) |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 1993 | igb_free_rx_resources(&adapter->rx_ring[i]); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1994 | } |
| 1995 | |
| 1996 | /** |
| 1997 | * igb_clean_rx_ring - Free Rx Buffers per Queue |
| 1998 | * @adapter: board private structure |
| 1999 | * @rx_ring: ring to free buffers from |
| 2000 | **/ |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 2001 | static void igb_clean_rx_ring(struct igb_ring *rx_ring) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2002 | { |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 2003 | struct igb_adapter *adapter = rx_ring->adapter; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2004 | struct igb_buffer *buffer_info; |
| 2005 | struct pci_dev *pdev = adapter->pdev; |
| 2006 | unsigned long size; |
| 2007 | unsigned int i; |
| 2008 | |
| 2009 | if (!rx_ring->buffer_info) |
| 2010 | return; |
| 2011 | /* Free all the Rx ring sk_buffs */ |
| 2012 | for (i = 0; i < rx_ring->count; i++) { |
| 2013 | buffer_info = &rx_ring->buffer_info[i]; |
| 2014 | if (buffer_info->dma) { |
| 2015 | if (adapter->rx_ps_hdr_size) |
| 2016 | pci_unmap_single(pdev, buffer_info->dma, |
| 2017 | adapter->rx_ps_hdr_size, |
| 2018 | PCI_DMA_FROMDEVICE); |
| 2019 | else |
| 2020 | pci_unmap_single(pdev, buffer_info->dma, |
| 2021 | adapter->rx_buffer_len, |
| 2022 | PCI_DMA_FROMDEVICE); |
| 2023 | buffer_info->dma = 0; |
| 2024 | } |
| 2025 | |
| 2026 | if (buffer_info->skb) { |
| 2027 | dev_kfree_skb(buffer_info->skb); |
| 2028 | buffer_info->skb = NULL; |
| 2029 | } |
| 2030 | if (buffer_info->page) { |
| 2031 | pci_unmap_page(pdev, buffer_info->page_dma, |
| 2032 | PAGE_SIZE, PCI_DMA_FROMDEVICE); |
| 2033 | put_page(buffer_info->page); |
| 2034 | buffer_info->page = NULL; |
| 2035 | buffer_info->page_dma = 0; |
| 2036 | } |
| 2037 | } |
| 2038 | |
| 2039 | /* there also may be some cached data from a chained receive */ |
| 2040 | if (rx_ring->pending_skb) { |
| 2041 | dev_kfree_skb(rx_ring->pending_skb); |
| 2042 | rx_ring->pending_skb = NULL; |
| 2043 | } |
| 2044 | |
| 2045 | size = sizeof(struct igb_buffer) * rx_ring->count; |
| 2046 | memset(rx_ring->buffer_info, 0, size); |
| 2047 | |
| 2048 | /* Zero out the descriptor ring */ |
| 2049 | memset(rx_ring->desc, 0, rx_ring->size); |
| 2050 | |
| 2051 | rx_ring->next_to_clean = 0; |
| 2052 | rx_ring->next_to_use = 0; |
| 2053 | |
| 2054 | writel(0, adapter->hw.hw_addr + rx_ring->head); |
| 2055 | writel(0, adapter->hw.hw_addr + rx_ring->tail); |
| 2056 | } |
| 2057 | |
| 2058 | /** |
| 2059 | * igb_clean_all_rx_rings - Free Rx Buffers for all queues |
| 2060 | * @adapter: board private structure |
| 2061 | **/ |
| 2062 | static void igb_clean_all_rx_rings(struct igb_adapter *adapter) |
| 2063 | { |
| 2064 | int i; |
| 2065 | |
| 2066 | for (i = 0; i < adapter->num_rx_queues; i++) |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 2067 | igb_clean_rx_ring(&adapter->rx_ring[i]); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2068 | } |
| 2069 | |
| 2070 | /** |
| 2071 | * igb_set_mac - Change the Ethernet Address of the NIC |
| 2072 | * @netdev: network interface device structure |
| 2073 | * @p: pointer to an address structure |
| 2074 | * |
| 2075 | * Returns 0 on success, negative on failure |
| 2076 | **/ |
| 2077 | static int igb_set_mac(struct net_device *netdev, void *p) |
| 2078 | { |
| 2079 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 2080 | struct sockaddr *addr = p; |
| 2081 | |
| 2082 | if (!is_valid_ether_addr(addr->sa_data)) |
| 2083 | return -EADDRNOTAVAIL; |
| 2084 | |
| 2085 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); |
| 2086 | memcpy(adapter->hw.mac.addr, addr->sa_data, netdev->addr_len); |
| 2087 | |
| 2088 | adapter->hw.mac.ops.rar_set(&adapter->hw, adapter->hw.mac.addr, 0); |
| 2089 | |
| 2090 | return 0; |
| 2091 | } |
| 2092 | |
| 2093 | /** |
| 2094 | * igb_set_multi - Multicast and Promiscuous mode set |
| 2095 | * @netdev: network interface device structure |
| 2096 | * |
| 2097 | * The set_multi entry point is called whenever the multicast address |
| 2098 | * list or the network interface flags are updated. This routine is |
| 2099 | * responsible for configuring the hardware for proper multicast, |
| 2100 | * promiscuous mode, and all-multi behavior. |
| 2101 | **/ |
| 2102 | static void igb_set_multi(struct net_device *netdev) |
| 2103 | { |
| 2104 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 2105 | struct e1000_hw *hw = &adapter->hw; |
| 2106 | struct e1000_mac_info *mac = &hw->mac; |
| 2107 | struct dev_mc_list *mc_ptr; |
| 2108 | u8 *mta_list; |
| 2109 | u32 rctl; |
| 2110 | int i; |
| 2111 | |
| 2112 | /* Check for Promiscuous and All Multicast modes */ |
| 2113 | |
| 2114 | rctl = rd32(E1000_RCTL); |
| 2115 | |
| 2116 | if (netdev->flags & IFF_PROMISC) |
| 2117 | rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE); |
| 2118 | else if (netdev->flags & IFF_ALLMULTI) { |
| 2119 | rctl |= E1000_RCTL_MPE; |
| 2120 | rctl &= ~E1000_RCTL_UPE; |
| 2121 | } else |
| 2122 | rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE); |
| 2123 | |
| 2124 | wr32(E1000_RCTL, rctl); |
| 2125 | |
| 2126 | if (!netdev->mc_count) { |
| 2127 | /* nothing to program, so clear mc list */ |
| 2128 | igb_update_mc_addr_list(hw, NULL, 0, 1, |
| 2129 | mac->rar_entry_count); |
| 2130 | return; |
| 2131 | } |
| 2132 | |
| 2133 | mta_list = kzalloc(netdev->mc_count * 6, GFP_ATOMIC); |
| 2134 | if (!mta_list) |
| 2135 | return; |
| 2136 | |
| 2137 | /* The shared function expects a packed array of only addresses. */ |
| 2138 | mc_ptr = netdev->mc_list; |
| 2139 | |
| 2140 | for (i = 0; i < netdev->mc_count; i++) { |
| 2141 | if (!mc_ptr) |
| 2142 | break; |
| 2143 | memcpy(mta_list + (i*ETH_ALEN), mc_ptr->dmi_addr, ETH_ALEN); |
| 2144 | mc_ptr = mc_ptr->next; |
| 2145 | } |
| 2146 | igb_update_mc_addr_list(hw, mta_list, i, 1, mac->rar_entry_count); |
| 2147 | kfree(mta_list); |
| 2148 | } |
| 2149 | |
| 2150 | /* Need to wait a few seconds after link up to get diagnostic information from |
| 2151 | * the phy */ |
| 2152 | static void igb_update_phy_info(unsigned long data) |
| 2153 | { |
| 2154 | struct igb_adapter *adapter = (struct igb_adapter *) data; |
Bill Hayes | 68707ac | 2008-02-19 10:24:41 -0800 | [diff] [blame] | 2155 | if (adapter->hw.phy.ops.get_phy_info) |
| 2156 | adapter->hw.phy.ops.get_phy_info(&adapter->hw); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2157 | } |
| 2158 | |
| 2159 | /** |
| 2160 | * igb_watchdog - Timer Call-back |
| 2161 | * @data: pointer to adapter cast into an unsigned long |
| 2162 | **/ |
| 2163 | static void igb_watchdog(unsigned long data) |
| 2164 | { |
| 2165 | struct igb_adapter *adapter = (struct igb_adapter *)data; |
| 2166 | /* Do the rest outside of interrupt context */ |
| 2167 | schedule_work(&adapter->watchdog_task); |
| 2168 | } |
| 2169 | |
| 2170 | static void igb_watchdog_task(struct work_struct *work) |
| 2171 | { |
| 2172 | struct igb_adapter *adapter = container_of(work, |
| 2173 | struct igb_adapter, watchdog_task); |
| 2174 | struct e1000_hw *hw = &adapter->hw; |
| 2175 | |
| 2176 | struct net_device *netdev = adapter->netdev; |
| 2177 | struct igb_ring *tx_ring = adapter->tx_ring; |
| 2178 | struct e1000_mac_info *mac = &adapter->hw.mac; |
| 2179 | u32 link; |
| 2180 | s32 ret_val; |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 2181 | #ifdef CONFIG_NETDEVICES_MULTIQUEUE |
| 2182 | int i; |
| 2183 | #endif |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2184 | |
| 2185 | if ((netif_carrier_ok(netdev)) && |
| 2186 | (rd32(E1000_STATUS) & E1000_STATUS_LU)) |
| 2187 | goto link_up; |
| 2188 | |
| 2189 | ret_val = hw->mac.ops.check_for_link(&adapter->hw); |
| 2190 | if ((ret_val == E1000_ERR_PHY) && |
| 2191 | (hw->phy.type == e1000_phy_igp_3) && |
| 2192 | (rd32(E1000_CTRL) & |
| 2193 | E1000_PHY_CTRL_GBE_DISABLE)) |
| 2194 | dev_info(&adapter->pdev->dev, |
| 2195 | "Gigabit has been disabled, downgrading speed\n"); |
| 2196 | |
| 2197 | if ((hw->phy.media_type == e1000_media_type_internal_serdes) && |
| 2198 | !(rd32(E1000_TXCW) & E1000_TXCW_ANE)) |
| 2199 | link = mac->serdes_has_link; |
| 2200 | else |
| 2201 | link = rd32(E1000_STATUS) & |
| 2202 | E1000_STATUS_LU; |
| 2203 | |
| 2204 | if (link) { |
| 2205 | if (!netif_carrier_ok(netdev)) { |
| 2206 | u32 ctrl; |
| 2207 | hw->mac.ops.get_speed_and_duplex(&adapter->hw, |
| 2208 | &adapter->link_speed, |
| 2209 | &adapter->link_duplex); |
| 2210 | |
| 2211 | ctrl = rd32(E1000_CTRL); |
| 2212 | dev_info(&adapter->pdev->dev, |
| 2213 | "NIC Link is Up %d Mbps %s, " |
| 2214 | "Flow Control: %s\n", |
| 2215 | adapter->link_speed, |
| 2216 | adapter->link_duplex == FULL_DUPLEX ? |
| 2217 | "Full Duplex" : "Half Duplex", |
| 2218 | ((ctrl & E1000_CTRL_TFCE) && (ctrl & |
| 2219 | E1000_CTRL_RFCE)) ? "RX/TX" : ((ctrl & |
| 2220 | E1000_CTRL_RFCE) ? "RX" : ((ctrl & |
| 2221 | E1000_CTRL_TFCE) ? "TX" : "None"))); |
| 2222 | |
| 2223 | /* tweak tx_queue_len according to speed/duplex and |
| 2224 | * adjust the timeout factor */ |
| 2225 | netdev->tx_queue_len = adapter->tx_queue_len; |
| 2226 | adapter->tx_timeout_factor = 1; |
| 2227 | switch (adapter->link_speed) { |
| 2228 | case SPEED_10: |
| 2229 | netdev->tx_queue_len = 10; |
| 2230 | adapter->tx_timeout_factor = 14; |
| 2231 | break; |
| 2232 | case SPEED_100: |
| 2233 | netdev->tx_queue_len = 100; |
| 2234 | /* maybe add some timeout factor ? */ |
| 2235 | break; |
| 2236 | } |
| 2237 | |
| 2238 | netif_carrier_on(netdev); |
| 2239 | netif_wake_queue(netdev); |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 2240 | #ifdef CONFIG_NETDEVICES_MULTIQUEUE |
| 2241 | for (i = 0; i < adapter->num_tx_queues; i++) |
| 2242 | netif_wake_subqueue(netdev, i); |
| 2243 | #endif |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2244 | |
| 2245 | if (!test_bit(__IGB_DOWN, &adapter->state)) |
| 2246 | mod_timer(&adapter->phy_info_timer, |
| 2247 | round_jiffies(jiffies + 2 * HZ)); |
| 2248 | } |
| 2249 | } else { |
| 2250 | if (netif_carrier_ok(netdev)) { |
| 2251 | adapter->link_speed = 0; |
| 2252 | adapter->link_duplex = 0; |
| 2253 | dev_info(&adapter->pdev->dev, "NIC Link is Down\n"); |
| 2254 | netif_carrier_off(netdev); |
| 2255 | netif_stop_queue(netdev); |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 2256 | #ifdef CONFIG_NETDEVICES_MULTIQUEUE |
| 2257 | for (i = 0; i < adapter->num_tx_queues; i++) |
| 2258 | netif_stop_subqueue(netdev, i); |
| 2259 | #endif |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2260 | if (!test_bit(__IGB_DOWN, &adapter->state)) |
| 2261 | mod_timer(&adapter->phy_info_timer, |
| 2262 | round_jiffies(jiffies + 2 * HZ)); |
| 2263 | } |
| 2264 | } |
| 2265 | |
| 2266 | link_up: |
| 2267 | igb_update_stats(adapter); |
| 2268 | |
| 2269 | mac->tx_packet_delta = adapter->stats.tpt - adapter->tpt_old; |
| 2270 | adapter->tpt_old = adapter->stats.tpt; |
| 2271 | mac->collision_delta = adapter->stats.colc - adapter->colc_old; |
| 2272 | adapter->colc_old = adapter->stats.colc; |
| 2273 | |
| 2274 | adapter->gorc = adapter->stats.gorc - adapter->gorc_old; |
| 2275 | adapter->gorc_old = adapter->stats.gorc; |
| 2276 | adapter->gotc = adapter->stats.gotc - adapter->gotc_old; |
| 2277 | adapter->gotc_old = adapter->stats.gotc; |
| 2278 | |
| 2279 | igb_update_adaptive(&adapter->hw); |
| 2280 | |
| 2281 | if (!netif_carrier_ok(netdev)) { |
| 2282 | if (IGB_DESC_UNUSED(tx_ring) + 1 < tx_ring->count) { |
| 2283 | /* We've lost link, so the controller stops DMA, |
| 2284 | * but we've got queued Tx work that's never going |
| 2285 | * to get done, so reset controller to flush Tx. |
| 2286 | * (Do the reset outside of interrupt context). */ |
| 2287 | adapter->tx_timeout_count++; |
| 2288 | schedule_work(&adapter->reset_task); |
| 2289 | } |
| 2290 | } |
| 2291 | |
| 2292 | /* Cause software interrupt to ensure rx ring is cleaned */ |
| 2293 | wr32(E1000_ICS, E1000_ICS_RXDMT0); |
| 2294 | |
| 2295 | /* Force detection of hung controller every watchdog period */ |
| 2296 | tx_ring->detect_tx_hung = true; |
| 2297 | |
| 2298 | /* Reset the timer */ |
| 2299 | if (!test_bit(__IGB_DOWN, &adapter->state)) |
| 2300 | mod_timer(&adapter->watchdog_timer, |
| 2301 | round_jiffies(jiffies + 2 * HZ)); |
| 2302 | } |
| 2303 | |
| 2304 | enum latency_range { |
| 2305 | lowest_latency = 0, |
| 2306 | low_latency = 1, |
| 2307 | bulk_latency = 2, |
| 2308 | latency_invalid = 255 |
| 2309 | }; |
| 2310 | |
| 2311 | |
| 2312 | static void igb_lower_rx_eitr(struct igb_adapter *adapter, |
| 2313 | struct igb_ring *rx_ring) |
| 2314 | { |
| 2315 | struct e1000_hw *hw = &adapter->hw; |
| 2316 | int new_val; |
| 2317 | |
| 2318 | new_val = rx_ring->itr_val / 2; |
| 2319 | if (new_val < IGB_MIN_DYN_ITR) |
| 2320 | new_val = IGB_MIN_DYN_ITR; |
| 2321 | |
| 2322 | if (new_val != rx_ring->itr_val) { |
| 2323 | rx_ring->itr_val = new_val; |
| 2324 | wr32(rx_ring->itr_register, |
| 2325 | 1000000000 / (new_val * 256)); |
| 2326 | } |
| 2327 | } |
| 2328 | |
| 2329 | static void igb_raise_rx_eitr(struct igb_adapter *adapter, |
| 2330 | struct igb_ring *rx_ring) |
| 2331 | { |
| 2332 | struct e1000_hw *hw = &adapter->hw; |
| 2333 | int new_val; |
| 2334 | |
| 2335 | new_val = rx_ring->itr_val * 2; |
| 2336 | if (new_val > IGB_MAX_DYN_ITR) |
| 2337 | new_val = IGB_MAX_DYN_ITR; |
| 2338 | |
| 2339 | if (new_val != rx_ring->itr_val) { |
| 2340 | rx_ring->itr_val = new_val; |
| 2341 | wr32(rx_ring->itr_register, |
| 2342 | 1000000000 / (new_val * 256)); |
| 2343 | } |
| 2344 | } |
| 2345 | |
| 2346 | /** |
| 2347 | * igb_update_itr - update the dynamic ITR value based on statistics |
| 2348 | * Stores a new ITR value based on packets and byte |
| 2349 | * counts during the last interrupt. The advantage of per interrupt |
| 2350 | * computation is faster updates and more accurate ITR for the current |
| 2351 | * traffic pattern. Constants in this function were computed |
| 2352 | * based on theoretical maximum wire speed and thresholds were set based |
| 2353 | * on testing data as well as attempting to minimize response time |
| 2354 | * while increasing bulk throughput. |
| 2355 | * this functionality is controlled by the InterruptThrottleRate module |
| 2356 | * parameter (see igb_param.c) |
| 2357 | * NOTE: These calculations are only valid when operating in a single- |
| 2358 | * queue environment. |
| 2359 | * @adapter: pointer to adapter |
| 2360 | * @itr_setting: current adapter->itr |
| 2361 | * @packets: the number of packets during this measurement interval |
| 2362 | * @bytes: the number of bytes during this measurement interval |
| 2363 | **/ |
| 2364 | static unsigned int igb_update_itr(struct igb_adapter *adapter, u16 itr_setting, |
| 2365 | int packets, int bytes) |
| 2366 | { |
| 2367 | unsigned int retval = itr_setting; |
| 2368 | |
| 2369 | if (packets == 0) |
| 2370 | goto update_itr_done; |
| 2371 | |
| 2372 | switch (itr_setting) { |
| 2373 | case lowest_latency: |
| 2374 | /* handle TSO and jumbo frames */ |
| 2375 | if (bytes/packets > 8000) |
| 2376 | retval = bulk_latency; |
| 2377 | else if ((packets < 5) && (bytes > 512)) |
| 2378 | retval = low_latency; |
| 2379 | break; |
| 2380 | case low_latency: /* 50 usec aka 20000 ints/s */ |
| 2381 | if (bytes > 10000) { |
| 2382 | /* this if handles the TSO accounting */ |
| 2383 | if (bytes/packets > 8000) { |
| 2384 | retval = bulk_latency; |
| 2385 | } else if ((packets < 10) || ((bytes/packets) > 1200)) { |
| 2386 | retval = bulk_latency; |
| 2387 | } else if ((packets > 35)) { |
| 2388 | retval = lowest_latency; |
| 2389 | } |
| 2390 | } else if (bytes/packets > 2000) { |
| 2391 | retval = bulk_latency; |
| 2392 | } else if (packets <= 2 && bytes < 512) { |
| 2393 | retval = lowest_latency; |
| 2394 | } |
| 2395 | break; |
| 2396 | case bulk_latency: /* 250 usec aka 4000 ints/s */ |
| 2397 | if (bytes > 25000) { |
| 2398 | if (packets > 35) |
| 2399 | retval = low_latency; |
| 2400 | } else if (bytes < 6000) { |
| 2401 | retval = low_latency; |
| 2402 | } |
| 2403 | break; |
| 2404 | } |
| 2405 | |
| 2406 | update_itr_done: |
| 2407 | return retval; |
| 2408 | } |
| 2409 | |
| 2410 | static void igb_set_itr(struct igb_adapter *adapter, u16 itr_register, |
| 2411 | int rx_only) |
| 2412 | { |
| 2413 | u16 current_itr; |
| 2414 | u32 new_itr = adapter->itr; |
| 2415 | |
| 2416 | /* for non-gigabit speeds, just fix the interrupt rate at 4000 */ |
| 2417 | if (adapter->link_speed != SPEED_1000) { |
| 2418 | current_itr = 0; |
| 2419 | new_itr = 4000; |
| 2420 | goto set_itr_now; |
| 2421 | } |
| 2422 | |
| 2423 | adapter->rx_itr = igb_update_itr(adapter, |
| 2424 | adapter->rx_itr, |
| 2425 | adapter->rx_ring->total_packets, |
| 2426 | adapter->rx_ring->total_bytes); |
| 2427 | /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
| 2428 | if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency) |
| 2429 | adapter->rx_itr = low_latency; |
| 2430 | |
| 2431 | if (!rx_only) { |
| 2432 | adapter->tx_itr = igb_update_itr(adapter, |
| 2433 | adapter->tx_itr, |
| 2434 | adapter->tx_ring->total_packets, |
| 2435 | adapter->tx_ring->total_bytes); |
| 2436 | /* conservative mode (itr 3) eliminates the |
| 2437 | * lowest_latency setting */ |
| 2438 | if (adapter->itr_setting == 3 && |
| 2439 | adapter->tx_itr == lowest_latency) |
| 2440 | adapter->tx_itr = low_latency; |
| 2441 | |
| 2442 | current_itr = max(adapter->rx_itr, adapter->tx_itr); |
| 2443 | } else { |
| 2444 | current_itr = adapter->rx_itr; |
| 2445 | } |
| 2446 | |
| 2447 | switch (current_itr) { |
| 2448 | /* counts and packets in update_itr are dependent on these numbers */ |
| 2449 | case lowest_latency: |
| 2450 | new_itr = 70000; |
| 2451 | break; |
| 2452 | case low_latency: |
| 2453 | new_itr = 20000; /* aka hwitr = ~200 */ |
| 2454 | break; |
| 2455 | case bulk_latency: |
| 2456 | new_itr = 4000; |
| 2457 | break; |
| 2458 | default: |
| 2459 | break; |
| 2460 | } |
| 2461 | |
| 2462 | set_itr_now: |
| 2463 | if (new_itr != adapter->itr) { |
| 2464 | /* this attempts to bias the interrupt rate towards Bulk |
| 2465 | * by adding intermediate steps when interrupt rate is |
| 2466 | * increasing */ |
| 2467 | new_itr = new_itr > adapter->itr ? |
| 2468 | min(adapter->itr + (new_itr >> 2), new_itr) : |
| 2469 | new_itr; |
| 2470 | /* Don't write the value here; it resets the adapter's |
| 2471 | * internal timer, and causes us to delay far longer than |
| 2472 | * we should between interrupts. Instead, we write the ITR |
| 2473 | * value at the beginning of the next interrupt so the timing |
| 2474 | * ends up being correct. |
| 2475 | */ |
| 2476 | adapter->itr = new_itr; |
| 2477 | adapter->set_itr = 1; |
| 2478 | } |
| 2479 | |
| 2480 | return; |
| 2481 | } |
| 2482 | |
| 2483 | |
| 2484 | #define IGB_TX_FLAGS_CSUM 0x00000001 |
| 2485 | #define IGB_TX_FLAGS_VLAN 0x00000002 |
| 2486 | #define IGB_TX_FLAGS_TSO 0x00000004 |
| 2487 | #define IGB_TX_FLAGS_IPV4 0x00000008 |
| 2488 | #define IGB_TX_FLAGS_VLAN_MASK 0xffff0000 |
| 2489 | #define IGB_TX_FLAGS_VLAN_SHIFT 16 |
| 2490 | |
| 2491 | static inline int igb_tso_adv(struct igb_adapter *adapter, |
| 2492 | struct igb_ring *tx_ring, |
| 2493 | struct sk_buff *skb, u32 tx_flags, u8 *hdr_len) |
| 2494 | { |
| 2495 | struct e1000_adv_tx_context_desc *context_desc; |
| 2496 | unsigned int i; |
| 2497 | int err; |
| 2498 | struct igb_buffer *buffer_info; |
| 2499 | u32 info = 0, tu_cmd = 0; |
| 2500 | u32 mss_l4len_idx, l4len; |
| 2501 | *hdr_len = 0; |
| 2502 | |
| 2503 | if (skb_header_cloned(skb)) { |
| 2504 | err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); |
| 2505 | if (err) |
| 2506 | return err; |
| 2507 | } |
| 2508 | |
| 2509 | l4len = tcp_hdrlen(skb); |
| 2510 | *hdr_len += l4len; |
| 2511 | |
| 2512 | if (skb->protocol == htons(ETH_P_IP)) { |
| 2513 | struct iphdr *iph = ip_hdr(skb); |
| 2514 | iph->tot_len = 0; |
| 2515 | iph->check = 0; |
| 2516 | tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, |
| 2517 | iph->daddr, 0, |
| 2518 | IPPROTO_TCP, |
| 2519 | 0); |
| 2520 | } else if (skb_shinfo(skb)->gso_type == SKB_GSO_TCPV6) { |
| 2521 | ipv6_hdr(skb)->payload_len = 0; |
| 2522 | tcp_hdr(skb)->check = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, |
| 2523 | &ipv6_hdr(skb)->daddr, |
| 2524 | 0, IPPROTO_TCP, 0); |
| 2525 | } |
| 2526 | |
| 2527 | i = tx_ring->next_to_use; |
| 2528 | |
| 2529 | buffer_info = &tx_ring->buffer_info[i]; |
| 2530 | context_desc = E1000_TX_CTXTDESC_ADV(*tx_ring, i); |
| 2531 | /* VLAN MACLEN IPLEN */ |
| 2532 | if (tx_flags & IGB_TX_FLAGS_VLAN) |
| 2533 | info |= (tx_flags & IGB_TX_FLAGS_VLAN_MASK); |
| 2534 | info |= (skb_network_offset(skb) << E1000_ADVTXD_MACLEN_SHIFT); |
| 2535 | *hdr_len += skb_network_offset(skb); |
| 2536 | info |= skb_network_header_len(skb); |
| 2537 | *hdr_len += skb_network_header_len(skb); |
| 2538 | context_desc->vlan_macip_lens = cpu_to_le32(info); |
| 2539 | |
| 2540 | /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */ |
| 2541 | tu_cmd |= (E1000_TXD_CMD_DEXT | E1000_ADVTXD_DTYP_CTXT); |
| 2542 | |
| 2543 | if (skb->protocol == htons(ETH_P_IP)) |
| 2544 | tu_cmd |= E1000_ADVTXD_TUCMD_IPV4; |
| 2545 | tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP; |
| 2546 | |
| 2547 | context_desc->type_tucmd_mlhl = cpu_to_le32(tu_cmd); |
| 2548 | |
| 2549 | /* MSS L4LEN IDX */ |
| 2550 | mss_l4len_idx = (skb_shinfo(skb)->gso_size << E1000_ADVTXD_MSS_SHIFT); |
| 2551 | mss_l4len_idx |= (l4len << E1000_ADVTXD_L4LEN_SHIFT); |
| 2552 | |
| 2553 | /* Context index must be unique per ring. Luckily, so is the interrupt |
| 2554 | * mask value. */ |
| 2555 | mss_l4len_idx |= tx_ring->eims_value >> 4; |
| 2556 | |
| 2557 | context_desc->mss_l4len_idx = cpu_to_le32(mss_l4len_idx); |
| 2558 | context_desc->seqnum_seed = 0; |
| 2559 | |
| 2560 | buffer_info->time_stamp = jiffies; |
| 2561 | buffer_info->dma = 0; |
| 2562 | i++; |
| 2563 | if (i == tx_ring->count) |
| 2564 | i = 0; |
| 2565 | |
| 2566 | tx_ring->next_to_use = i; |
| 2567 | |
| 2568 | return true; |
| 2569 | } |
| 2570 | |
| 2571 | static inline bool igb_tx_csum_adv(struct igb_adapter *adapter, |
| 2572 | struct igb_ring *tx_ring, |
| 2573 | struct sk_buff *skb, u32 tx_flags) |
| 2574 | { |
| 2575 | struct e1000_adv_tx_context_desc *context_desc; |
| 2576 | unsigned int i; |
| 2577 | struct igb_buffer *buffer_info; |
| 2578 | u32 info = 0, tu_cmd = 0; |
| 2579 | |
| 2580 | if ((skb->ip_summed == CHECKSUM_PARTIAL) || |
| 2581 | (tx_flags & IGB_TX_FLAGS_VLAN)) { |
| 2582 | i = tx_ring->next_to_use; |
| 2583 | buffer_info = &tx_ring->buffer_info[i]; |
| 2584 | context_desc = E1000_TX_CTXTDESC_ADV(*tx_ring, i); |
| 2585 | |
| 2586 | if (tx_flags & IGB_TX_FLAGS_VLAN) |
| 2587 | info |= (tx_flags & IGB_TX_FLAGS_VLAN_MASK); |
| 2588 | info |= (skb_network_offset(skb) << E1000_ADVTXD_MACLEN_SHIFT); |
| 2589 | if (skb->ip_summed == CHECKSUM_PARTIAL) |
| 2590 | info |= skb_network_header_len(skb); |
| 2591 | |
| 2592 | context_desc->vlan_macip_lens = cpu_to_le32(info); |
| 2593 | |
| 2594 | tu_cmd |= (E1000_TXD_CMD_DEXT | E1000_ADVTXD_DTYP_CTXT); |
| 2595 | |
| 2596 | if (skb->ip_summed == CHECKSUM_PARTIAL) { |
Mitch Williams | 44b0cda | 2008-03-07 10:32:13 -0800 | [diff] [blame] | 2597 | switch (skb->protocol) { |
| 2598 | case __constant_htons(ETH_P_IP): |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2599 | tu_cmd |= E1000_ADVTXD_TUCMD_IPV4; |
Mitch Williams | 44b0cda | 2008-03-07 10:32:13 -0800 | [diff] [blame] | 2600 | if (ip_hdr(skb)->protocol == IPPROTO_TCP) |
| 2601 | tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP; |
| 2602 | break; |
| 2603 | case __constant_htons(ETH_P_IPV6): |
| 2604 | /* XXX what about other V6 headers?? */ |
| 2605 | if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP) |
| 2606 | tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP; |
| 2607 | break; |
| 2608 | default: |
| 2609 | if (unlikely(net_ratelimit())) |
| 2610 | dev_warn(&adapter->pdev->dev, |
| 2611 | "partial checksum but proto=%x!\n", |
| 2612 | skb->protocol); |
| 2613 | break; |
| 2614 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2615 | } |
| 2616 | |
| 2617 | context_desc->type_tucmd_mlhl = cpu_to_le32(tu_cmd); |
| 2618 | context_desc->seqnum_seed = 0; |
| 2619 | context_desc->mss_l4len_idx = |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 2620 | cpu_to_le32(tx_ring->queue_index << 4); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2621 | |
| 2622 | buffer_info->time_stamp = jiffies; |
| 2623 | buffer_info->dma = 0; |
| 2624 | |
| 2625 | i++; |
| 2626 | if (i == tx_ring->count) |
| 2627 | i = 0; |
| 2628 | tx_ring->next_to_use = i; |
| 2629 | |
| 2630 | return true; |
| 2631 | } |
| 2632 | |
| 2633 | |
| 2634 | return false; |
| 2635 | } |
| 2636 | |
| 2637 | #define IGB_MAX_TXD_PWR 16 |
| 2638 | #define IGB_MAX_DATA_PER_TXD (1<<IGB_MAX_TXD_PWR) |
| 2639 | |
| 2640 | static inline int igb_tx_map_adv(struct igb_adapter *adapter, |
| 2641 | struct igb_ring *tx_ring, |
| 2642 | struct sk_buff *skb) |
| 2643 | { |
| 2644 | struct igb_buffer *buffer_info; |
| 2645 | unsigned int len = skb_headlen(skb); |
| 2646 | unsigned int count = 0, i; |
| 2647 | unsigned int f; |
| 2648 | |
| 2649 | i = tx_ring->next_to_use; |
| 2650 | |
| 2651 | buffer_info = &tx_ring->buffer_info[i]; |
| 2652 | BUG_ON(len >= IGB_MAX_DATA_PER_TXD); |
| 2653 | buffer_info->length = len; |
| 2654 | /* set time_stamp *before* dma to help avoid a possible race */ |
| 2655 | buffer_info->time_stamp = jiffies; |
| 2656 | buffer_info->dma = pci_map_single(adapter->pdev, skb->data, len, |
| 2657 | PCI_DMA_TODEVICE); |
| 2658 | count++; |
| 2659 | i++; |
| 2660 | if (i == tx_ring->count) |
| 2661 | i = 0; |
| 2662 | |
| 2663 | for (f = 0; f < skb_shinfo(skb)->nr_frags; f++) { |
| 2664 | struct skb_frag_struct *frag; |
| 2665 | |
| 2666 | frag = &skb_shinfo(skb)->frags[f]; |
| 2667 | len = frag->size; |
| 2668 | |
| 2669 | buffer_info = &tx_ring->buffer_info[i]; |
| 2670 | BUG_ON(len >= IGB_MAX_DATA_PER_TXD); |
| 2671 | buffer_info->length = len; |
| 2672 | buffer_info->time_stamp = jiffies; |
| 2673 | buffer_info->dma = pci_map_page(adapter->pdev, |
| 2674 | frag->page, |
| 2675 | frag->page_offset, |
| 2676 | len, |
| 2677 | PCI_DMA_TODEVICE); |
| 2678 | |
| 2679 | count++; |
| 2680 | i++; |
| 2681 | if (i == tx_ring->count) |
| 2682 | i = 0; |
| 2683 | } |
| 2684 | |
| 2685 | i = (i == 0) ? tx_ring->count - 1 : i - 1; |
| 2686 | tx_ring->buffer_info[i].skb = skb; |
| 2687 | |
| 2688 | return count; |
| 2689 | } |
| 2690 | |
| 2691 | static inline void igb_tx_queue_adv(struct igb_adapter *adapter, |
| 2692 | struct igb_ring *tx_ring, |
| 2693 | int tx_flags, int count, u32 paylen, |
| 2694 | u8 hdr_len) |
| 2695 | { |
| 2696 | union e1000_adv_tx_desc *tx_desc = NULL; |
| 2697 | struct igb_buffer *buffer_info; |
| 2698 | u32 olinfo_status = 0, cmd_type_len; |
| 2699 | unsigned int i; |
| 2700 | |
| 2701 | cmd_type_len = (E1000_ADVTXD_DTYP_DATA | E1000_ADVTXD_DCMD_IFCS | |
| 2702 | E1000_ADVTXD_DCMD_DEXT); |
| 2703 | |
| 2704 | if (tx_flags & IGB_TX_FLAGS_VLAN) |
| 2705 | cmd_type_len |= E1000_ADVTXD_DCMD_VLE; |
| 2706 | |
| 2707 | if (tx_flags & IGB_TX_FLAGS_TSO) { |
| 2708 | cmd_type_len |= E1000_ADVTXD_DCMD_TSE; |
| 2709 | |
| 2710 | /* insert tcp checksum */ |
| 2711 | olinfo_status |= E1000_TXD_POPTS_TXSM << 8; |
| 2712 | |
| 2713 | /* insert ip checksum */ |
| 2714 | if (tx_flags & IGB_TX_FLAGS_IPV4) |
| 2715 | olinfo_status |= E1000_TXD_POPTS_IXSM << 8; |
| 2716 | |
| 2717 | } else if (tx_flags & IGB_TX_FLAGS_CSUM) { |
| 2718 | olinfo_status |= E1000_TXD_POPTS_TXSM << 8; |
| 2719 | } |
| 2720 | |
| 2721 | if (tx_flags & (IGB_TX_FLAGS_CSUM | IGB_TX_FLAGS_TSO | |
| 2722 | IGB_TX_FLAGS_VLAN)) |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 2723 | olinfo_status |= tx_ring->queue_index << 4; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2724 | |
| 2725 | olinfo_status |= ((paylen - hdr_len) << E1000_ADVTXD_PAYLEN_SHIFT); |
| 2726 | |
| 2727 | i = tx_ring->next_to_use; |
| 2728 | while (count--) { |
| 2729 | buffer_info = &tx_ring->buffer_info[i]; |
| 2730 | tx_desc = E1000_TX_DESC_ADV(*tx_ring, i); |
| 2731 | tx_desc->read.buffer_addr = cpu_to_le64(buffer_info->dma); |
| 2732 | tx_desc->read.cmd_type_len = |
| 2733 | cpu_to_le32(cmd_type_len | buffer_info->length); |
| 2734 | tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status); |
| 2735 | i++; |
| 2736 | if (i == tx_ring->count) |
| 2737 | i = 0; |
| 2738 | } |
| 2739 | |
| 2740 | tx_desc->read.cmd_type_len |= cpu_to_le32(adapter->txd_cmd); |
| 2741 | /* Force memory writes to complete before letting h/w |
| 2742 | * know there are new descriptors to fetch. (Only |
| 2743 | * applicable for weak-ordered memory model archs, |
| 2744 | * such as IA-64). */ |
| 2745 | wmb(); |
| 2746 | |
| 2747 | tx_ring->next_to_use = i; |
| 2748 | writel(i, adapter->hw.hw_addr + tx_ring->tail); |
| 2749 | /* we need this if more than one processor can write to our tail |
| 2750 | * at a time, it syncronizes IO on IA64/Altix systems */ |
| 2751 | mmiowb(); |
| 2752 | } |
| 2753 | |
| 2754 | static int __igb_maybe_stop_tx(struct net_device *netdev, |
| 2755 | struct igb_ring *tx_ring, int size) |
| 2756 | { |
| 2757 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 2758 | |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 2759 | #ifdef CONFIG_NETDEVICES_MULTIQUEUE |
| 2760 | netif_stop_subqueue(netdev, tx_ring->queue_index); |
| 2761 | #else |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2762 | netif_stop_queue(netdev); |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 2763 | #endif |
| 2764 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2765 | /* Herbert's original patch had: |
| 2766 | * smp_mb__after_netif_stop_queue(); |
| 2767 | * but since that doesn't exist yet, just open code it. */ |
| 2768 | smp_mb(); |
| 2769 | |
| 2770 | /* We need to check again in a case another CPU has just |
| 2771 | * made room available. */ |
| 2772 | if (IGB_DESC_UNUSED(tx_ring) < size) |
| 2773 | return -EBUSY; |
| 2774 | |
| 2775 | /* A reprieve! */ |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 2776 | #ifdef CONFIG_NETDEVICES_MULTIQUEUE |
| 2777 | netif_wake_subqueue(netdev, tx_ring->queue_index); |
| 2778 | #else |
| 2779 | netif_wake_queue(netdev); |
| 2780 | #endif |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2781 | ++adapter->restart_queue; |
| 2782 | return 0; |
| 2783 | } |
| 2784 | |
| 2785 | static int igb_maybe_stop_tx(struct net_device *netdev, |
| 2786 | struct igb_ring *tx_ring, int size) |
| 2787 | { |
| 2788 | if (IGB_DESC_UNUSED(tx_ring) >= size) |
| 2789 | return 0; |
| 2790 | return __igb_maybe_stop_tx(netdev, tx_ring, size); |
| 2791 | } |
| 2792 | |
| 2793 | #define TXD_USE_COUNT(S) (((S) >> (IGB_MAX_TXD_PWR)) + 1) |
| 2794 | |
| 2795 | static int igb_xmit_frame_ring_adv(struct sk_buff *skb, |
| 2796 | struct net_device *netdev, |
| 2797 | struct igb_ring *tx_ring) |
| 2798 | { |
| 2799 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 2800 | unsigned int tx_flags = 0; |
| 2801 | unsigned int len; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2802 | u8 hdr_len = 0; |
| 2803 | int tso = 0; |
| 2804 | |
| 2805 | len = skb_headlen(skb); |
| 2806 | |
| 2807 | if (test_bit(__IGB_DOWN, &adapter->state)) { |
| 2808 | dev_kfree_skb_any(skb); |
| 2809 | return NETDEV_TX_OK; |
| 2810 | } |
| 2811 | |
| 2812 | if (skb->len <= 0) { |
| 2813 | dev_kfree_skb_any(skb); |
| 2814 | return NETDEV_TX_OK; |
| 2815 | } |
| 2816 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2817 | /* need: 1 descriptor per page, |
| 2818 | * + 2 desc gap to keep tail from touching head, |
| 2819 | * + 1 desc for skb->data, |
| 2820 | * + 1 desc for context descriptor, |
| 2821 | * otherwise try next time */ |
| 2822 | if (igb_maybe_stop_tx(netdev, tx_ring, skb_shinfo(skb)->nr_frags + 4)) { |
| 2823 | /* this is a hard error */ |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2824 | return NETDEV_TX_BUSY; |
| 2825 | } |
| 2826 | |
| 2827 | if (adapter->vlgrp && vlan_tx_tag_present(skb)) { |
| 2828 | tx_flags |= IGB_TX_FLAGS_VLAN; |
| 2829 | tx_flags |= (vlan_tx_tag_get(skb) << IGB_TX_FLAGS_VLAN_SHIFT); |
| 2830 | } |
| 2831 | |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 2832 | if (skb->protocol == htons(ETH_P_IP)) |
| 2833 | tx_flags |= IGB_TX_FLAGS_IPV4; |
| 2834 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2835 | tso = skb_is_gso(skb) ? igb_tso_adv(adapter, tx_ring, skb, tx_flags, |
| 2836 | &hdr_len) : 0; |
| 2837 | |
| 2838 | if (tso < 0) { |
| 2839 | dev_kfree_skb_any(skb); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2840 | return NETDEV_TX_OK; |
| 2841 | } |
| 2842 | |
| 2843 | if (tso) |
| 2844 | tx_flags |= IGB_TX_FLAGS_TSO; |
| 2845 | else if (igb_tx_csum_adv(adapter, tx_ring, skb, tx_flags)) |
| 2846 | if (skb->ip_summed == CHECKSUM_PARTIAL) |
| 2847 | tx_flags |= IGB_TX_FLAGS_CSUM; |
| 2848 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2849 | igb_tx_queue_adv(adapter, tx_ring, tx_flags, |
| 2850 | igb_tx_map_adv(adapter, tx_ring, skb), |
| 2851 | skb->len, hdr_len); |
| 2852 | |
| 2853 | netdev->trans_start = jiffies; |
| 2854 | |
| 2855 | /* Make sure there is space in the ring for the next send. */ |
| 2856 | igb_maybe_stop_tx(netdev, tx_ring, MAX_SKB_FRAGS + 4); |
| 2857 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2858 | return NETDEV_TX_OK; |
| 2859 | } |
| 2860 | |
| 2861 | static int igb_xmit_frame_adv(struct sk_buff *skb, struct net_device *netdev) |
| 2862 | { |
| 2863 | struct igb_adapter *adapter = netdev_priv(netdev); |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 2864 | struct igb_ring *tx_ring; |
| 2865 | |
| 2866 | #ifdef CONFIG_NETDEVICES_MULTIQUEUE |
| 2867 | int r_idx = 0; |
| 2868 | r_idx = skb->queue_mapping & (IGB_MAX_TX_QUEUES - 1); |
| 2869 | tx_ring = adapter->multi_tx_table[r_idx]; |
| 2870 | #else |
| 2871 | tx_ring = &adapter->tx_ring[0]; |
| 2872 | #endif |
| 2873 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2874 | |
| 2875 | /* This goes back to the question of how to logically map a tx queue |
| 2876 | * to a flow. Right now, performance is impacted slightly negatively |
| 2877 | * if using multiple tx queues. If the stack breaks away from a |
| 2878 | * single qdisc implementation, we can look at this again. */ |
| 2879 | return (igb_xmit_frame_ring_adv(skb, netdev, tx_ring)); |
| 2880 | } |
| 2881 | |
| 2882 | /** |
| 2883 | * igb_tx_timeout - Respond to a Tx Hang |
| 2884 | * @netdev: network interface device structure |
| 2885 | **/ |
| 2886 | static void igb_tx_timeout(struct net_device *netdev) |
| 2887 | { |
| 2888 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 2889 | struct e1000_hw *hw = &adapter->hw; |
| 2890 | |
| 2891 | /* Do the reset outside of interrupt context */ |
| 2892 | adapter->tx_timeout_count++; |
| 2893 | schedule_work(&adapter->reset_task); |
| 2894 | wr32(E1000_EICS, adapter->eims_enable_mask & |
| 2895 | ~(E1000_EIMS_TCP_TIMER | E1000_EIMS_OTHER)); |
| 2896 | } |
| 2897 | |
| 2898 | static void igb_reset_task(struct work_struct *work) |
| 2899 | { |
| 2900 | struct igb_adapter *adapter; |
| 2901 | adapter = container_of(work, struct igb_adapter, reset_task); |
| 2902 | |
| 2903 | igb_reinit_locked(adapter); |
| 2904 | } |
| 2905 | |
| 2906 | /** |
| 2907 | * igb_get_stats - Get System Network Statistics |
| 2908 | * @netdev: network interface device structure |
| 2909 | * |
| 2910 | * Returns the address of the device statistics structure. |
| 2911 | * The statistics are actually updated from the timer callback. |
| 2912 | **/ |
| 2913 | static struct net_device_stats * |
| 2914 | igb_get_stats(struct net_device *netdev) |
| 2915 | { |
| 2916 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 2917 | |
| 2918 | /* only return the current stats */ |
| 2919 | return &adapter->net_stats; |
| 2920 | } |
| 2921 | |
| 2922 | /** |
| 2923 | * igb_change_mtu - Change the Maximum Transfer Unit |
| 2924 | * @netdev: network interface device structure |
| 2925 | * @new_mtu: new value for maximum frame size |
| 2926 | * |
| 2927 | * Returns 0 on success, negative on failure |
| 2928 | **/ |
| 2929 | static int igb_change_mtu(struct net_device *netdev, int new_mtu) |
| 2930 | { |
| 2931 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 2932 | int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN; |
| 2933 | |
| 2934 | if ((max_frame < ETH_ZLEN + ETH_FCS_LEN) || |
| 2935 | (max_frame > MAX_JUMBO_FRAME_SIZE)) { |
| 2936 | dev_err(&adapter->pdev->dev, "Invalid MTU setting\n"); |
| 2937 | return -EINVAL; |
| 2938 | } |
| 2939 | |
| 2940 | #define MAX_STD_JUMBO_FRAME_SIZE 9234 |
| 2941 | if (max_frame > MAX_STD_JUMBO_FRAME_SIZE) { |
| 2942 | dev_err(&adapter->pdev->dev, "MTU > 9216 not supported.\n"); |
| 2943 | return -EINVAL; |
| 2944 | } |
| 2945 | |
| 2946 | while (test_and_set_bit(__IGB_RESETTING, &adapter->state)) |
| 2947 | msleep(1); |
| 2948 | /* igb_down has a dependency on max_frame_size */ |
| 2949 | adapter->max_frame_size = max_frame; |
| 2950 | if (netif_running(netdev)) |
| 2951 | igb_down(adapter); |
| 2952 | |
| 2953 | /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN |
| 2954 | * means we reserve 2 more, this pushes us to allocate from the next |
| 2955 | * larger slab size. |
| 2956 | * i.e. RXBUFFER_2048 --> size-4096 slab |
| 2957 | */ |
| 2958 | |
| 2959 | if (max_frame <= IGB_RXBUFFER_256) |
| 2960 | adapter->rx_buffer_len = IGB_RXBUFFER_256; |
| 2961 | else if (max_frame <= IGB_RXBUFFER_512) |
| 2962 | adapter->rx_buffer_len = IGB_RXBUFFER_512; |
| 2963 | else if (max_frame <= IGB_RXBUFFER_1024) |
| 2964 | adapter->rx_buffer_len = IGB_RXBUFFER_1024; |
| 2965 | else if (max_frame <= IGB_RXBUFFER_2048) |
| 2966 | adapter->rx_buffer_len = IGB_RXBUFFER_2048; |
| 2967 | else |
| 2968 | adapter->rx_buffer_len = IGB_RXBUFFER_4096; |
| 2969 | /* adjust allocation if LPE protects us, and we aren't using SBP */ |
| 2970 | if ((max_frame == ETH_FRAME_LEN + ETH_FCS_LEN) || |
| 2971 | (max_frame == MAXIMUM_ETHERNET_VLAN_SIZE)) |
| 2972 | adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE; |
| 2973 | |
| 2974 | dev_info(&adapter->pdev->dev, "changing MTU from %d to %d\n", |
| 2975 | netdev->mtu, new_mtu); |
| 2976 | netdev->mtu = new_mtu; |
| 2977 | |
| 2978 | if (netif_running(netdev)) |
| 2979 | igb_up(adapter); |
| 2980 | else |
| 2981 | igb_reset(adapter); |
| 2982 | |
| 2983 | clear_bit(__IGB_RESETTING, &adapter->state); |
| 2984 | |
| 2985 | return 0; |
| 2986 | } |
| 2987 | |
| 2988 | /** |
| 2989 | * igb_update_stats - Update the board statistics counters |
| 2990 | * @adapter: board private structure |
| 2991 | **/ |
| 2992 | |
| 2993 | void igb_update_stats(struct igb_adapter *adapter) |
| 2994 | { |
| 2995 | struct e1000_hw *hw = &adapter->hw; |
| 2996 | struct pci_dev *pdev = adapter->pdev; |
| 2997 | u16 phy_tmp; |
| 2998 | |
| 2999 | #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF |
| 3000 | |
| 3001 | /* |
| 3002 | * Prevent stats update while adapter is being reset, or if the pci |
| 3003 | * connection is down. |
| 3004 | */ |
| 3005 | if (adapter->link_speed == 0) |
| 3006 | return; |
| 3007 | if (pci_channel_offline(pdev)) |
| 3008 | return; |
| 3009 | |
| 3010 | adapter->stats.crcerrs += rd32(E1000_CRCERRS); |
| 3011 | adapter->stats.gprc += rd32(E1000_GPRC); |
| 3012 | adapter->stats.gorc += rd32(E1000_GORCL); |
| 3013 | rd32(E1000_GORCH); /* clear GORCL */ |
| 3014 | adapter->stats.bprc += rd32(E1000_BPRC); |
| 3015 | adapter->stats.mprc += rd32(E1000_MPRC); |
| 3016 | adapter->stats.roc += rd32(E1000_ROC); |
| 3017 | |
| 3018 | adapter->stats.prc64 += rd32(E1000_PRC64); |
| 3019 | adapter->stats.prc127 += rd32(E1000_PRC127); |
| 3020 | adapter->stats.prc255 += rd32(E1000_PRC255); |
| 3021 | adapter->stats.prc511 += rd32(E1000_PRC511); |
| 3022 | adapter->stats.prc1023 += rd32(E1000_PRC1023); |
| 3023 | adapter->stats.prc1522 += rd32(E1000_PRC1522); |
| 3024 | adapter->stats.symerrs += rd32(E1000_SYMERRS); |
| 3025 | adapter->stats.sec += rd32(E1000_SEC); |
| 3026 | |
| 3027 | adapter->stats.mpc += rd32(E1000_MPC); |
| 3028 | adapter->stats.scc += rd32(E1000_SCC); |
| 3029 | adapter->stats.ecol += rd32(E1000_ECOL); |
| 3030 | adapter->stats.mcc += rd32(E1000_MCC); |
| 3031 | adapter->stats.latecol += rd32(E1000_LATECOL); |
| 3032 | adapter->stats.dc += rd32(E1000_DC); |
| 3033 | adapter->stats.rlec += rd32(E1000_RLEC); |
| 3034 | adapter->stats.xonrxc += rd32(E1000_XONRXC); |
| 3035 | adapter->stats.xontxc += rd32(E1000_XONTXC); |
| 3036 | adapter->stats.xoffrxc += rd32(E1000_XOFFRXC); |
| 3037 | adapter->stats.xofftxc += rd32(E1000_XOFFTXC); |
| 3038 | adapter->stats.fcruc += rd32(E1000_FCRUC); |
| 3039 | adapter->stats.gptc += rd32(E1000_GPTC); |
| 3040 | adapter->stats.gotc += rd32(E1000_GOTCL); |
| 3041 | rd32(E1000_GOTCH); /* clear GOTCL */ |
| 3042 | adapter->stats.rnbc += rd32(E1000_RNBC); |
| 3043 | adapter->stats.ruc += rd32(E1000_RUC); |
| 3044 | adapter->stats.rfc += rd32(E1000_RFC); |
| 3045 | adapter->stats.rjc += rd32(E1000_RJC); |
| 3046 | adapter->stats.tor += rd32(E1000_TORH); |
| 3047 | adapter->stats.tot += rd32(E1000_TOTH); |
| 3048 | adapter->stats.tpr += rd32(E1000_TPR); |
| 3049 | |
| 3050 | adapter->stats.ptc64 += rd32(E1000_PTC64); |
| 3051 | adapter->stats.ptc127 += rd32(E1000_PTC127); |
| 3052 | adapter->stats.ptc255 += rd32(E1000_PTC255); |
| 3053 | adapter->stats.ptc511 += rd32(E1000_PTC511); |
| 3054 | adapter->stats.ptc1023 += rd32(E1000_PTC1023); |
| 3055 | adapter->stats.ptc1522 += rd32(E1000_PTC1522); |
| 3056 | |
| 3057 | adapter->stats.mptc += rd32(E1000_MPTC); |
| 3058 | adapter->stats.bptc += rd32(E1000_BPTC); |
| 3059 | |
| 3060 | /* used for adaptive IFS */ |
| 3061 | |
| 3062 | hw->mac.tx_packet_delta = rd32(E1000_TPT); |
| 3063 | adapter->stats.tpt += hw->mac.tx_packet_delta; |
| 3064 | hw->mac.collision_delta = rd32(E1000_COLC); |
| 3065 | adapter->stats.colc += hw->mac.collision_delta; |
| 3066 | |
| 3067 | adapter->stats.algnerrc += rd32(E1000_ALGNERRC); |
| 3068 | adapter->stats.rxerrc += rd32(E1000_RXERRC); |
| 3069 | adapter->stats.tncrs += rd32(E1000_TNCRS); |
| 3070 | adapter->stats.tsctc += rd32(E1000_TSCTC); |
| 3071 | adapter->stats.tsctfc += rd32(E1000_TSCTFC); |
| 3072 | |
| 3073 | adapter->stats.iac += rd32(E1000_IAC); |
| 3074 | adapter->stats.icrxoc += rd32(E1000_ICRXOC); |
| 3075 | adapter->stats.icrxptc += rd32(E1000_ICRXPTC); |
| 3076 | adapter->stats.icrxatc += rd32(E1000_ICRXATC); |
| 3077 | adapter->stats.ictxptc += rd32(E1000_ICTXPTC); |
| 3078 | adapter->stats.ictxatc += rd32(E1000_ICTXATC); |
| 3079 | adapter->stats.ictxqec += rd32(E1000_ICTXQEC); |
| 3080 | adapter->stats.ictxqmtc += rd32(E1000_ICTXQMTC); |
| 3081 | adapter->stats.icrxdmtc += rd32(E1000_ICRXDMTC); |
| 3082 | |
| 3083 | /* Fill out the OS statistics structure */ |
| 3084 | adapter->net_stats.multicast = adapter->stats.mprc; |
| 3085 | adapter->net_stats.collisions = adapter->stats.colc; |
| 3086 | |
| 3087 | /* Rx Errors */ |
| 3088 | |
| 3089 | /* RLEC on some newer hardware can be incorrect so build |
| 3090 | * our own version based on RUC and ROC */ |
| 3091 | adapter->net_stats.rx_errors = adapter->stats.rxerrc + |
| 3092 | adapter->stats.crcerrs + adapter->stats.algnerrc + |
| 3093 | adapter->stats.ruc + adapter->stats.roc + |
| 3094 | adapter->stats.cexterr; |
| 3095 | adapter->net_stats.rx_length_errors = adapter->stats.ruc + |
| 3096 | adapter->stats.roc; |
| 3097 | adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs; |
| 3098 | adapter->net_stats.rx_frame_errors = adapter->stats.algnerrc; |
| 3099 | adapter->net_stats.rx_missed_errors = adapter->stats.mpc; |
| 3100 | |
| 3101 | /* Tx Errors */ |
| 3102 | adapter->net_stats.tx_errors = adapter->stats.ecol + |
| 3103 | adapter->stats.latecol; |
| 3104 | adapter->net_stats.tx_aborted_errors = adapter->stats.ecol; |
| 3105 | adapter->net_stats.tx_window_errors = adapter->stats.latecol; |
| 3106 | adapter->net_stats.tx_carrier_errors = adapter->stats.tncrs; |
| 3107 | |
| 3108 | /* Tx Dropped needs to be maintained elsewhere */ |
| 3109 | |
| 3110 | /* Phy Stats */ |
| 3111 | if (hw->phy.media_type == e1000_media_type_copper) { |
| 3112 | if ((adapter->link_speed == SPEED_1000) && |
| 3113 | (!hw->phy.ops.read_phy_reg(hw, PHY_1000T_STATUS, |
| 3114 | &phy_tmp))) { |
| 3115 | phy_tmp &= PHY_IDLE_ERROR_COUNT_MASK; |
| 3116 | adapter->phy_stats.idle_errors += phy_tmp; |
| 3117 | } |
| 3118 | } |
| 3119 | |
| 3120 | /* Management Stats */ |
| 3121 | adapter->stats.mgptc += rd32(E1000_MGTPTC); |
| 3122 | adapter->stats.mgprc += rd32(E1000_MGTPRC); |
| 3123 | adapter->stats.mgpdc += rd32(E1000_MGTPDC); |
| 3124 | } |
| 3125 | |
| 3126 | |
| 3127 | static irqreturn_t igb_msix_other(int irq, void *data) |
| 3128 | { |
| 3129 | struct net_device *netdev = data; |
| 3130 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 3131 | struct e1000_hw *hw = &adapter->hw; |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 3132 | u32 icr = rd32(E1000_ICR); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3133 | |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 3134 | /* reading ICR causes bit 31 of EICR to be cleared */ |
| 3135 | if (!(icr & E1000_ICR_LSC)) |
| 3136 | goto no_link_interrupt; |
| 3137 | hw->mac.get_link_status = 1; |
| 3138 | /* guard against interrupt when we're going down */ |
| 3139 | if (!test_bit(__IGB_DOWN, &adapter->state)) |
| 3140 | mod_timer(&adapter->watchdog_timer, jiffies + 1); |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 3141 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3142 | no_link_interrupt: |
| 3143 | wr32(E1000_IMS, E1000_IMS_LSC); |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 3144 | wr32(E1000_EIMS, adapter->eims_other); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3145 | |
| 3146 | return IRQ_HANDLED; |
| 3147 | } |
| 3148 | |
| 3149 | static irqreturn_t igb_msix_tx(int irq, void *data) |
| 3150 | { |
| 3151 | struct igb_ring *tx_ring = data; |
| 3152 | struct igb_adapter *adapter = tx_ring->adapter; |
| 3153 | struct e1000_hw *hw = &adapter->hw; |
| 3154 | |
| 3155 | if (!tx_ring->itr_val) |
| 3156 | wr32(E1000_EIMC, tx_ring->eims_value); |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame^] | 3157 | #ifdef CONFIG_DCA |
| 3158 | if (adapter->dca_enabled) |
| 3159 | igb_update_tx_dca(tx_ring); |
| 3160 | #endif |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3161 | tx_ring->total_bytes = 0; |
| 3162 | tx_ring->total_packets = 0; |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 3163 | |
| 3164 | /* auto mask will automatically reenable the interrupt when we write |
| 3165 | * EICS */ |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 3166 | if (!igb_clean_tx_irq(tx_ring)) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3167 | /* Ring was not completely cleaned, so fire another interrupt */ |
| 3168 | wr32(E1000_EICS, tx_ring->eims_value); |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 3169 | else |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3170 | wr32(E1000_EIMS, tx_ring->eims_value); |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 3171 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3172 | return IRQ_HANDLED; |
| 3173 | } |
| 3174 | |
| 3175 | static irqreturn_t igb_msix_rx(int irq, void *data) |
| 3176 | { |
| 3177 | struct igb_ring *rx_ring = data; |
| 3178 | struct igb_adapter *adapter = rx_ring->adapter; |
| 3179 | struct e1000_hw *hw = &adapter->hw; |
| 3180 | |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 3181 | /* Write the ITR value calculated at the end of the |
| 3182 | * previous interrupt. |
| 3183 | */ |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3184 | |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 3185 | if (adapter->set_itr) { |
| 3186 | wr32(rx_ring->itr_register, |
| 3187 | 1000000000 / (rx_ring->itr_val * 256)); |
| 3188 | adapter->set_itr = 0; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3189 | } |
| 3190 | |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 3191 | if (netif_rx_schedule_prep(adapter->netdev, &rx_ring->napi)) |
| 3192 | __netif_rx_schedule(adapter->netdev, &rx_ring->napi); |
| 3193 | |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame^] | 3194 | #ifdef CONFIG_DCA |
| 3195 | if (adapter->dca_enabled) |
| 3196 | igb_update_rx_dca(rx_ring); |
| 3197 | #endif |
| 3198 | return IRQ_HANDLED; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3199 | } |
| 3200 | |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame^] | 3201 | #ifdef CONFIG_DCA |
| 3202 | static void igb_update_rx_dca(struct igb_ring *rx_ring) |
| 3203 | { |
| 3204 | u32 dca_rxctrl; |
| 3205 | struct igb_adapter *adapter = rx_ring->adapter; |
| 3206 | struct e1000_hw *hw = &adapter->hw; |
| 3207 | int cpu = get_cpu(); |
| 3208 | int q = rx_ring - adapter->rx_ring; |
| 3209 | |
| 3210 | if (rx_ring->cpu != cpu) { |
| 3211 | dca_rxctrl = rd32(E1000_DCA_RXCTRL(q)); |
| 3212 | dca_rxctrl &= ~E1000_DCA_RXCTRL_CPUID_MASK; |
| 3213 | dca_rxctrl |= dca_get_tag(cpu); |
| 3214 | dca_rxctrl |= E1000_DCA_RXCTRL_DESC_DCA_EN; |
| 3215 | dca_rxctrl |= E1000_DCA_RXCTRL_HEAD_DCA_EN; |
| 3216 | dca_rxctrl |= E1000_DCA_RXCTRL_DATA_DCA_EN; |
| 3217 | wr32(E1000_DCA_RXCTRL(q), dca_rxctrl); |
| 3218 | rx_ring->cpu = cpu; |
| 3219 | } |
| 3220 | put_cpu(); |
| 3221 | } |
| 3222 | |
| 3223 | static void igb_update_tx_dca(struct igb_ring *tx_ring) |
| 3224 | { |
| 3225 | u32 dca_txctrl; |
| 3226 | struct igb_adapter *adapter = tx_ring->adapter; |
| 3227 | struct e1000_hw *hw = &adapter->hw; |
| 3228 | int cpu = get_cpu(); |
| 3229 | int q = tx_ring - adapter->tx_ring; |
| 3230 | |
| 3231 | if (tx_ring->cpu != cpu) { |
| 3232 | dca_txctrl = rd32(E1000_DCA_TXCTRL(q)); |
| 3233 | dca_txctrl &= ~E1000_DCA_TXCTRL_CPUID_MASK; |
| 3234 | dca_txctrl |= dca_get_tag(cpu); |
| 3235 | dca_txctrl |= E1000_DCA_TXCTRL_DESC_DCA_EN; |
| 3236 | wr32(E1000_DCA_TXCTRL(q), dca_txctrl); |
| 3237 | tx_ring->cpu = cpu; |
| 3238 | } |
| 3239 | put_cpu(); |
| 3240 | } |
| 3241 | |
| 3242 | static void igb_setup_dca(struct igb_adapter *adapter) |
| 3243 | { |
| 3244 | int i; |
| 3245 | |
| 3246 | if (!(adapter->dca_enabled)) |
| 3247 | return; |
| 3248 | |
| 3249 | for (i = 0; i < adapter->num_tx_queues; i++) { |
| 3250 | adapter->tx_ring[i].cpu = -1; |
| 3251 | igb_update_tx_dca(&adapter->tx_ring[i]); |
| 3252 | } |
| 3253 | for (i = 0; i < adapter->num_rx_queues; i++) { |
| 3254 | adapter->rx_ring[i].cpu = -1; |
| 3255 | igb_update_rx_dca(&adapter->rx_ring[i]); |
| 3256 | } |
| 3257 | } |
| 3258 | |
| 3259 | static int __igb_notify_dca(struct device *dev, void *data) |
| 3260 | { |
| 3261 | struct net_device *netdev = dev_get_drvdata(dev); |
| 3262 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 3263 | struct e1000_hw *hw = &adapter->hw; |
| 3264 | unsigned long event = *(unsigned long *)data; |
| 3265 | |
| 3266 | switch (event) { |
| 3267 | case DCA_PROVIDER_ADD: |
| 3268 | /* if already enabled, don't do it again */ |
| 3269 | if (adapter->dca_enabled) |
| 3270 | break; |
| 3271 | adapter->dca_enabled = true; |
| 3272 | /* Always use CB2 mode, difference is masked |
| 3273 | * in the CB driver. */ |
| 3274 | wr32(E1000_DCA_CTRL, 2); |
| 3275 | if (dca_add_requester(dev) == 0) { |
| 3276 | dev_info(&adapter->pdev->dev, "DCA enabled\n"); |
| 3277 | igb_setup_dca(adapter); |
| 3278 | break; |
| 3279 | } |
| 3280 | /* Fall Through since DCA is disabled. */ |
| 3281 | case DCA_PROVIDER_REMOVE: |
| 3282 | if (adapter->dca_enabled) { |
| 3283 | /* without this a class_device is left |
| 3284 | * hanging around in the sysfs model */ |
| 3285 | dca_remove_requester(dev); |
| 3286 | dev_info(&adapter->pdev->dev, "DCA disabled\n"); |
| 3287 | adapter->dca_enabled = false; |
| 3288 | wr32(E1000_DCA_CTRL, 1); |
| 3289 | } |
| 3290 | break; |
| 3291 | } |
| 3292 | |
| 3293 | return 0; |
| 3294 | } |
| 3295 | |
| 3296 | static int igb_notify_dca(struct notifier_block *nb, unsigned long event, |
| 3297 | void *p) |
| 3298 | { |
| 3299 | int ret_val; |
| 3300 | |
| 3301 | ret_val = driver_for_each_device(&igb_driver.driver, NULL, &event, |
| 3302 | __igb_notify_dca); |
| 3303 | |
| 3304 | return ret_val ? NOTIFY_BAD : NOTIFY_DONE; |
| 3305 | } |
| 3306 | #endif /* CONFIG_DCA */ |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3307 | |
| 3308 | /** |
| 3309 | * igb_intr_msi - Interrupt Handler |
| 3310 | * @irq: interrupt number |
| 3311 | * @data: pointer to a network interface device structure |
| 3312 | **/ |
| 3313 | static irqreturn_t igb_intr_msi(int irq, void *data) |
| 3314 | { |
| 3315 | struct net_device *netdev = data; |
| 3316 | struct igb_adapter *adapter = netdev_priv(netdev); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3317 | struct e1000_hw *hw = &adapter->hw; |
| 3318 | /* read ICR disables interrupts using IAM */ |
| 3319 | u32 icr = rd32(E1000_ICR); |
| 3320 | |
| 3321 | /* Write the ITR value calculated at the end of the |
| 3322 | * previous interrupt. |
| 3323 | */ |
| 3324 | if (adapter->set_itr) { |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 3325 | wr32(E1000_ITR, 1000000000 / (adapter->itr * 256)); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3326 | adapter->set_itr = 0; |
| 3327 | } |
| 3328 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3329 | if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) { |
| 3330 | hw->mac.get_link_status = 1; |
| 3331 | if (!test_bit(__IGB_DOWN, &adapter->state)) |
| 3332 | mod_timer(&adapter->watchdog_timer, jiffies + 1); |
| 3333 | } |
| 3334 | |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 3335 | netif_rx_schedule(netdev, &adapter->rx_ring[0].napi); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3336 | |
| 3337 | return IRQ_HANDLED; |
| 3338 | } |
| 3339 | |
| 3340 | /** |
| 3341 | * igb_intr - Interrupt Handler |
| 3342 | * @irq: interrupt number |
| 3343 | * @data: pointer to a network interface device structure |
| 3344 | **/ |
| 3345 | static irqreturn_t igb_intr(int irq, void *data) |
| 3346 | { |
| 3347 | struct net_device *netdev = data; |
| 3348 | struct igb_adapter *adapter = netdev_priv(netdev); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3349 | struct e1000_hw *hw = &adapter->hw; |
| 3350 | /* Interrupt Auto-Mask...upon reading ICR, interrupts are masked. No |
| 3351 | * need for the IMC write */ |
| 3352 | u32 icr = rd32(E1000_ICR); |
| 3353 | u32 eicr = 0; |
| 3354 | if (!icr) |
| 3355 | return IRQ_NONE; /* Not our interrupt */ |
| 3356 | |
| 3357 | /* Write the ITR value calculated at the end of the |
| 3358 | * previous interrupt. |
| 3359 | */ |
| 3360 | if (adapter->set_itr) { |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 3361 | wr32(E1000_ITR, 1000000000 / (adapter->itr * 256)); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3362 | adapter->set_itr = 0; |
| 3363 | } |
| 3364 | |
| 3365 | /* IMS will not auto-mask if INT_ASSERTED is not set, and if it is |
| 3366 | * not set, then the adapter didn't send an interrupt */ |
| 3367 | if (!(icr & E1000_ICR_INT_ASSERTED)) |
| 3368 | return IRQ_NONE; |
| 3369 | |
| 3370 | eicr = rd32(E1000_EICR); |
| 3371 | |
| 3372 | if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) { |
| 3373 | hw->mac.get_link_status = 1; |
| 3374 | /* guard against interrupt when we're going down */ |
| 3375 | if (!test_bit(__IGB_DOWN, &adapter->state)) |
| 3376 | mod_timer(&adapter->watchdog_timer, jiffies + 1); |
| 3377 | } |
| 3378 | |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 3379 | netif_rx_schedule(netdev, &adapter->rx_ring[0].napi); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3380 | |
| 3381 | return IRQ_HANDLED; |
| 3382 | } |
| 3383 | |
| 3384 | /** |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 3385 | * igb_poll - NAPI Rx polling callback |
| 3386 | * @napi: napi polling structure |
| 3387 | * @budget: count of how many packets we should handle |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3388 | **/ |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 3389 | static int igb_poll(struct napi_struct *napi, int budget) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3390 | { |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 3391 | struct igb_ring *rx_ring = container_of(napi, struct igb_ring, napi); |
| 3392 | struct igb_adapter *adapter = rx_ring->adapter; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3393 | struct net_device *netdev = adapter->netdev; |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 3394 | int tx_clean_complete, work_done = 0; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3395 | |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 3396 | /* this poll routine only supports one tx and one rx queue */ |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame^] | 3397 | #ifdef CONFIG_DCA |
| 3398 | if (adapter->dca_enabled) |
| 3399 | igb_update_tx_dca(&adapter->tx_ring[0]); |
| 3400 | #endif |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 3401 | tx_clean_complete = igb_clean_tx_irq(&adapter->tx_ring[0]); |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame^] | 3402 | |
| 3403 | #ifdef CONFIG_DCA |
| 3404 | if (adapter->dca_enabled) |
| 3405 | igb_update_rx_dca(&adapter->rx_ring[0]); |
| 3406 | #endif |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 3407 | igb_clean_rx_irq_adv(&adapter->rx_ring[0], &work_done, budget); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3408 | |
| 3409 | /* If no Tx and not enough Rx work done, exit the polling mode */ |
| 3410 | if ((tx_clean_complete && (work_done < budget)) || |
| 3411 | !netif_running(netdev)) { |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3412 | if (adapter->itr_setting & 3) |
| 3413 | igb_set_itr(adapter, E1000_ITR, false); |
| 3414 | netif_rx_complete(netdev, napi); |
| 3415 | if (!test_bit(__IGB_DOWN, &adapter->state)) |
| 3416 | igb_irq_enable(adapter); |
| 3417 | return 0; |
| 3418 | } |
| 3419 | |
| 3420 | return 1; |
| 3421 | } |
| 3422 | |
| 3423 | static int igb_clean_rx_ring_msix(struct napi_struct *napi, int budget) |
| 3424 | { |
| 3425 | struct igb_ring *rx_ring = container_of(napi, struct igb_ring, napi); |
| 3426 | struct igb_adapter *adapter = rx_ring->adapter; |
| 3427 | struct e1000_hw *hw = &adapter->hw; |
| 3428 | struct net_device *netdev = adapter->netdev; |
| 3429 | int work_done = 0; |
| 3430 | |
| 3431 | /* Keep link state information with original netdev */ |
| 3432 | if (!netif_carrier_ok(netdev)) |
| 3433 | goto quit_polling; |
| 3434 | |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame^] | 3435 | #ifdef CONFIG_DCA |
| 3436 | if (adapter->dca_enabled) |
| 3437 | igb_update_rx_dca(rx_ring); |
| 3438 | #endif |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 3439 | igb_clean_rx_irq_adv(rx_ring, &work_done, budget); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3440 | |
| 3441 | |
| 3442 | /* If not enough Rx work done, exit the polling mode */ |
| 3443 | if ((work_done == 0) || !netif_running(netdev)) { |
| 3444 | quit_polling: |
| 3445 | netif_rx_complete(netdev, napi); |
| 3446 | |
| 3447 | wr32(E1000_EIMS, rx_ring->eims_value); |
| 3448 | if ((adapter->itr_setting & 3) && !rx_ring->no_itr_adjust && |
| 3449 | (rx_ring->total_packets > IGB_DYN_ITR_PACKET_THRESHOLD)) { |
| 3450 | int mean_size = rx_ring->total_bytes / |
| 3451 | rx_ring->total_packets; |
| 3452 | if (mean_size < IGB_DYN_ITR_LENGTH_LOW) |
| 3453 | igb_raise_rx_eitr(adapter, rx_ring); |
| 3454 | else if (mean_size > IGB_DYN_ITR_LENGTH_HIGH) |
| 3455 | igb_lower_rx_eitr(adapter, rx_ring); |
| 3456 | } |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 3457 | |
| 3458 | if (!test_bit(__IGB_DOWN, &adapter->state)) |
| 3459 | wr32(E1000_EIMS, rx_ring->eims_value); |
| 3460 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3461 | return 0; |
| 3462 | } |
| 3463 | |
| 3464 | return 1; |
| 3465 | } |
Al Viro | 6d8126f | 2008-03-16 22:23:24 +0000 | [diff] [blame] | 3466 | |
| 3467 | static inline u32 get_head(struct igb_ring *tx_ring) |
| 3468 | { |
| 3469 | void *end = (struct e1000_tx_desc *)tx_ring->desc + tx_ring->count; |
| 3470 | return le32_to_cpu(*(volatile __le32 *)end); |
| 3471 | } |
| 3472 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3473 | /** |
| 3474 | * igb_clean_tx_irq - Reclaim resources after transmit completes |
| 3475 | * @adapter: board private structure |
| 3476 | * returns true if ring is completely cleaned |
| 3477 | **/ |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 3478 | static bool igb_clean_tx_irq(struct igb_ring *tx_ring) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3479 | { |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 3480 | struct igb_adapter *adapter = tx_ring->adapter; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3481 | struct e1000_hw *hw = &adapter->hw; |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 3482 | struct net_device *netdev = adapter->netdev; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3483 | struct e1000_tx_desc *tx_desc; |
| 3484 | struct igb_buffer *buffer_info; |
| 3485 | struct sk_buff *skb; |
| 3486 | unsigned int i; |
| 3487 | u32 head, oldhead; |
| 3488 | unsigned int count = 0; |
| 3489 | bool cleaned = false; |
| 3490 | bool retval = true; |
| 3491 | unsigned int total_bytes = 0, total_packets = 0; |
| 3492 | |
| 3493 | rmb(); |
Al Viro | 6d8126f | 2008-03-16 22:23:24 +0000 | [diff] [blame] | 3494 | head = get_head(tx_ring); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3495 | i = tx_ring->next_to_clean; |
| 3496 | while (1) { |
| 3497 | while (i != head) { |
| 3498 | cleaned = true; |
| 3499 | tx_desc = E1000_TX_DESC(*tx_ring, i); |
| 3500 | buffer_info = &tx_ring->buffer_info[i]; |
| 3501 | skb = buffer_info->skb; |
| 3502 | |
| 3503 | if (skb) { |
| 3504 | unsigned int segs, bytecount; |
| 3505 | /* gso_segs is currently only valid for tcp */ |
| 3506 | segs = skb_shinfo(skb)->gso_segs ?: 1; |
| 3507 | /* multiply data chunks by size of headers */ |
| 3508 | bytecount = ((segs - 1) * skb_headlen(skb)) + |
| 3509 | skb->len; |
| 3510 | total_packets += segs; |
| 3511 | total_bytes += bytecount; |
| 3512 | } |
| 3513 | |
| 3514 | igb_unmap_and_free_tx_resource(adapter, buffer_info); |
| 3515 | tx_desc->upper.data = 0; |
| 3516 | |
| 3517 | i++; |
| 3518 | if (i == tx_ring->count) |
| 3519 | i = 0; |
| 3520 | |
| 3521 | count++; |
| 3522 | if (count == IGB_MAX_TX_CLEAN) { |
| 3523 | retval = false; |
| 3524 | goto done_cleaning; |
| 3525 | } |
| 3526 | } |
| 3527 | oldhead = head; |
| 3528 | rmb(); |
Al Viro | 6d8126f | 2008-03-16 22:23:24 +0000 | [diff] [blame] | 3529 | head = get_head(tx_ring); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3530 | if (head == oldhead) |
| 3531 | goto done_cleaning; |
| 3532 | } /* while (1) */ |
| 3533 | |
| 3534 | done_cleaning: |
| 3535 | tx_ring->next_to_clean = i; |
| 3536 | |
| 3537 | if (unlikely(cleaned && |
| 3538 | netif_carrier_ok(netdev) && |
| 3539 | IGB_DESC_UNUSED(tx_ring) >= IGB_TX_QUEUE_WAKE)) { |
| 3540 | /* Make sure that anybody stopping the queue after this |
| 3541 | * sees the new next_to_clean. |
| 3542 | */ |
| 3543 | smp_mb(); |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 3544 | #ifdef CONFIG_NETDEVICES_MULTIQUEUE |
| 3545 | if (__netif_subqueue_stopped(netdev, tx_ring->queue_index) && |
| 3546 | !(test_bit(__IGB_DOWN, &adapter->state))) { |
| 3547 | netif_wake_subqueue(netdev, tx_ring->queue_index); |
| 3548 | ++adapter->restart_queue; |
| 3549 | } |
| 3550 | #else |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3551 | if (netif_queue_stopped(netdev) && |
| 3552 | !(test_bit(__IGB_DOWN, &adapter->state))) { |
| 3553 | netif_wake_queue(netdev); |
| 3554 | ++adapter->restart_queue; |
| 3555 | } |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 3556 | #endif |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3557 | } |
| 3558 | |
| 3559 | if (tx_ring->detect_tx_hung) { |
| 3560 | /* Detect a transmit hang in hardware, this serializes the |
| 3561 | * check with the clearing of time_stamp and movement of i */ |
| 3562 | tx_ring->detect_tx_hung = false; |
| 3563 | if (tx_ring->buffer_info[i].time_stamp && |
| 3564 | time_after(jiffies, tx_ring->buffer_info[i].time_stamp + |
| 3565 | (adapter->tx_timeout_factor * HZ)) |
| 3566 | && !(rd32(E1000_STATUS) & |
| 3567 | E1000_STATUS_TXOFF)) { |
| 3568 | |
| 3569 | tx_desc = E1000_TX_DESC(*tx_ring, i); |
| 3570 | /* detected Tx unit hang */ |
| 3571 | dev_err(&adapter->pdev->dev, |
| 3572 | "Detected Tx Unit Hang\n" |
| 3573 | " Tx Queue <%lu>\n" |
| 3574 | " TDH <%x>\n" |
| 3575 | " TDT <%x>\n" |
| 3576 | " next_to_use <%x>\n" |
| 3577 | " next_to_clean <%x>\n" |
| 3578 | " head (WB) <%x>\n" |
| 3579 | "buffer_info[next_to_clean]\n" |
| 3580 | " time_stamp <%lx>\n" |
| 3581 | " jiffies <%lx>\n" |
| 3582 | " desc.status <%x>\n", |
| 3583 | (unsigned long)((tx_ring - adapter->tx_ring) / |
| 3584 | sizeof(struct igb_ring)), |
| 3585 | readl(adapter->hw.hw_addr + tx_ring->head), |
| 3586 | readl(adapter->hw.hw_addr + tx_ring->tail), |
| 3587 | tx_ring->next_to_use, |
| 3588 | tx_ring->next_to_clean, |
| 3589 | head, |
| 3590 | tx_ring->buffer_info[i].time_stamp, |
| 3591 | jiffies, |
| 3592 | tx_desc->upper.fields.status); |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 3593 | #ifdef CONFIG_NETDEVICES_MULTIQUEUE |
| 3594 | netif_stop_subqueue(netdev, tx_ring->queue_index); |
| 3595 | #else |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3596 | netif_stop_queue(netdev); |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 3597 | #endif |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3598 | } |
| 3599 | } |
| 3600 | tx_ring->total_bytes += total_bytes; |
| 3601 | tx_ring->total_packets += total_packets; |
Alexander Duyck | e21ed35 | 2008-07-08 15:07:24 -0700 | [diff] [blame] | 3602 | tx_ring->tx_stats.bytes += total_bytes; |
| 3603 | tx_ring->tx_stats.packets += total_packets; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3604 | adapter->net_stats.tx_bytes += total_bytes; |
| 3605 | adapter->net_stats.tx_packets += total_packets; |
| 3606 | return retval; |
| 3607 | } |
| 3608 | |
| 3609 | |
| 3610 | /** |
| 3611 | * igb_receive_skb - helper function to handle rx indications |
| 3612 | * @adapter: board private structure |
| 3613 | * @status: descriptor status field as written by hardware |
| 3614 | * @vlan: descriptor vlan field as written by hardware (no le/be conversion) |
| 3615 | * @skb: pointer to sk_buff to be indicated to stack |
| 3616 | **/ |
Al Viro | 6d8126f | 2008-03-16 22:23:24 +0000 | [diff] [blame] | 3617 | static void igb_receive_skb(struct igb_adapter *adapter, u8 status, __le16 vlan, |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3618 | struct sk_buff *skb) |
| 3619 | { |
| 3620 | if (adapter->vlgrp && (status & E1000_RXD_STAT_VP)) |
| 3621 | vlan_hwaccel_receive_skb(skb, adapter->vlgrp, |
Patrick McHardy | 38b2219 | 2008-07-06 20:48:41 -0700 | [diff] [blame] | 3622 | le16_to_cpu(vlan)); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3623 | else |
| 3624 | netif_receive_skb(skb); |
| 3625 | } |
| 3626 | |
| 3627 | |
| 3628 | static inline void igb_rx_checksum_adv(struct igb_adapter *adapter, |
| 3629 | u32 status_err, struct sk_buff *skb) |
| 3630 | { |
| 3631 | skb->ip_summed = CHECKSUM_NONE; |
| 3632 | |
| 3633 | /* Ignore Checksum bit is set or checksum is disabled through ethtool */ |
| 3634 | if ((status_err & E1000_RXD_STAT_IXSM) || !adapter->rx_csum) |
| 3635 | return; |
| 3636 | /* TCP/UDP checksum error bit is set */ |
| 3637 | if (status_err & |
| 3638 | (E1000_RXDEXT_STATERR_TCPE | E1000_RXDEXT_STATERR_IPE)) { |
| 3639 | /* let the stack verify checksum errors */ |
| 3640 | adapter->hw_csum_err++; |
| 3641 | return; |
| 3642 | } |
| 3643 | /* It must be a TCP or UDP packet with a valid checksum */ |
| 3644 | if (status_err & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS)) |
| 3645 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
| 3646 | |
| 3647 | adapter->hw_csum_good++; |
| 3648 | } |
| 3649 | |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 3650 | static bool igb_clean_rx_irq_adv(struct igb_ring *rx_ring, |
| 3651 | int *work_done, int budget) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3652 | { |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 3653 | struct igb_adapter *adapter = rx_ring->adapter; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3654 | struct net_device *netdev = adapter->netdev; |
| 3655 | struct pci_dev *pdev = adapter->pdev; |
| 3656 | union e1000_adv_rx_desc *rx_desc , *next_rxd; |
| 3657 | struct igb_buffer *buffer_info , *next_buffer; |
| 3658 | struct sk_buff *skb; |
| 3659 | unsigned int i, j; |
| 3660 | u32 length, hlen, staterr; |
| 3661 | bool cleaned = false; |
| 3662 | int cleaned_count = 0; |
| 3663 | unsigned int total_bytes = 0, total_packets = 0; |
| 3664 | |
| 3665 | i = rx_ring->next_to_clean; |
| 3666 | rx_desc = E1000_RX_DESC_ADV(*rx_ring, i); |
| 3667 | staterr = le32_to_cpu(rx_desc->wb.upper.status_error); |
| 3668 | |
| 3669 | while (staterr & E1000_RXD_STAT_DD) { |
| 3670 | if (*work_done >= budget) |
| 3671 | break; |
| 3672 | (*work_done)++; |
| 3673 | buffer_info = &rx_ring->buffer_info[i]; |
| 3674 | |
| 3675 | /* HW will not DMA in data larger than the given buffer, even |
| 3676 | * if it parses the (NFS, of course) header to be larger. In |
| 3677 | * that case, it fills the header buffer and spills the rest |
| 3678 | * into the page. |
| 3679 | */ |
Al Viro | 7deb07b | 2008-03-16 22:43:06 +0000 | [diff] [blame] | 3680 | hlen = (le16_to_cpu(rx_desc->wb.lower.lo_dword.hdr_info) & |
| 3681 | E1000_RXDADV_HDRBUFLEN_MASK) >> E1000_RXDADV_HDRBUFLEN_SHIFT; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3682 | if (hlen > adapter->rx_ps_hdr_size) |
| 3683 | hlen = adapter->rx_ps_hdr_size; |
| 3684 | |
| 3685 | length = le16_to_cpu(rx_desc->wb.upper.length); |
| 3686 | cleaned = true; |
| 3687 | cleaned_count++; |
| 3688 | |
| 3689 | if (rx_ring->pending_skb != NULL) { |
| 3690 | skb = rx_ring->pending_skb; |
| 3691 | rx_ring->pending_skb = NULL; |
| 3692 | j = rx_ring->pending_skb_page; |
| 3693 | } else { |
| 3694 | skb = buffer_info->skb; |
| 3695 | prefetch(skb->data - NET_IP_ALIGN); |
| 3696 | buffer_info->skb = NULL; |
| 3697 | if (hlen) { |
| 3698 | pci_unmap_single(pdev, buffer_info->dma, |
| 3699 | adapter->rx_ps_hdr_size + |
| 3700 | NET_IP_ALIGN, |
| 3701 | PCI_DMA_FROMDEVICE); |
| 3702 | skb_put(skb, hlen); |
| 3703 | } else { |
| 3704 | pci_unmap_single(pdev, buffer_info->dma, |
| 3705 | adapter->rx_buffer_len + |
| 3706 | NET_IP_ALIGN, |
| 3707 | PCI_DMA_FROMDEVICE); |
| 3708 | skb_put(skb, length); |
| 3709 | goto send_up; |
| 3710 | } |
| 3711 | j = 0; |
| 3712 | } |
| 3713 | |
| 3714 | while (length) { |
| 3715 | pci_unmap_page(pdev, buffer_info->page_dma, |
| 3716 | PAGE_SIZE, PCI_DMA_FROMDEVICE); |
| 3717 | buffer_info->page_dma = 0; |
| 3718 | skb_fill_page_desc(skb, j, buffer_info->page, |
| 3719 | 0, length); |
| 3720 | buffer_info->page = NULL; |
| 3721 | |
| 3722 | skb->len += length; |
| 3723 | skb->data_len += length; |
| 3724 | skb->truesize += length; |
| 3725 | rx_desc->wb.upper.status_error = 0; |
| 3726 | if (staterr & E1000_RXD_STAT_EOP) |
| 3727 | break; |
| 3728 | |
| 3729 | j++; |
| 3730 | cleaned_count++; |
| 3731 | i++; |
| 3732 | if (i == rx_ring->count) |
| 3733 | i = 0; |
| 3734 | |
| 3735 | buffer_info = &rx_ring->buffer_info[i]; |
| 3736 | rx_desc = E1000_RX_DESC_ADV(*rx_ring, i); |
| 3737 | staterr = le32_to_cpu(rx_desc->wb.upper.status_error); |
| 3738 | length = le16_to_cpu(rx_desc->wb.upper.length); |
| 3739 | if (!(staterr & E1000_RXD_STAT_DD)) { |
| 3740 | rx_ring->pending_skb = skb; |
| 3741 | rx_ring->pending_skb_page = j; |
| 3742 | goto out; |
| 3743 | } |
| 3744 | } |
| 3745 | send_up: |
| 3746 | pskb_trim(skb, skb->len - 4); |
| 3747 | i++; |
| 3748 | if (i == rx_ring->count) |
| 3749 | i = 0; |
| 3750 | next_rxd = E1000_RX_DESC_ADV(*rx_ring, i); |
| 3751 | prefetch(next_rxd); |
| 3752 | next_buffer = &rx_ring->buffer_info[i]; |
| 3753 | |
| 3754 | if (staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) { |
| 3755 | dev_kfree_skb_irq(skb); |
| 3756 | goto next_desc; |
| 3757 | } |
| 3758 | rx_ring->no_itr_adjust |= (staterr & E1000_RXD_STAT_DYNINT); |
| 3759 | |
| 3760 | total_bytes += skb->len; |
| 3761 | total_packets++; |
| 3762 | |
| 3763 | igb_rx_checksum_adv(adapter, staterr, skb); |
| 3764 | |
| 3765 | skb->protocol = eth_type_trans(skb, netdev); |
| 3766 | |
| 3767 | igb_receive_skb(adapter, staterr, rx_desc->wb.upper.vlan, skb); |
| 3768 | |
| 3769 | netdev->last_rx = jiffies; |
| 3770 | |
| 3771 | next_desc: |
| 3772 | rx_desc->wb.upper.status_error = 0; |
| 3773 | |
| 3774 | /* return some buffers to hardware, one at a time is too slow */ |
| 3775 | if (cleaned_count >= IGB_RX_BUFFER_WRITE) { |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 3776 | igb_alloc_rx_buffers_adv(rx_ring, cleaned_count); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3777 | cleaned_count = 0; |
| 3778 | } |
| 3779 | |
| 3780 | /* use prefetched values */ |
| 3781 | rx_desc = next_rxd; |
| 3782 | buffer_info = next_buffer; |
| 3783 | |
| 3784 | staterr = le32_to_cpu(rx_desc->wb.upper.status_error); |
| 3785 | } |
| 3786 | out: |
| 3787 | rx_ring->next_to_clean = i; |
| 3788 | cleaned_count = IGB_DESC_UNUSED(rx_ring); |
| 3789 | |
| 3790 | if (cleaned_count) |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 3791 | igb_alloc_rx_buffers_adv(rx_ring, cleaned_count); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3792 | |
| 3793 | rx_ring->total_packets += total_packets; |
| 3794 | rx_ring->total_bytes += total_bytes; |
| 3795 | rx_ring->rx_stats.packets += total_packets; |
| 3796 | rx_ring->rx_stats.bytes += total_bytes; |
| 3797 | adapter->net_stats.rx_bytes += total_bytes; |
| 3798 | adapter->net_stats.rx_packets += total_packets; |
| 3799 | return cleaned; |
| 3800 | } |
| 3801 | |
| 3802 | |
| 3803 | /** |
| 3804 | * igb_alloc_rx_buffers_adv - Replace used receive buffers; packet split |
| 3805 | * @adapter: address of board private structure |
| 3806 | **/ |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 3807 | static void igb_alloc_rx_buffers_adv(struct igb_ring *rx_ring, |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3808 | int cleaned_count) |
| 3809 | { |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 3810 | struct igb_adapter *adapter = rx_ring->adapter; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3811 | struct net_device *netdev = adapter->netdev; |
| 3812 | struct pci_dev *pdev = adapter->pdev; |
| 3813 | union e1000_adv_rx_desc *rx_desc; |
| 3814 | struct igb_buffer *buffer_info; |
| 3815 | struct sk_buff *skb; |
| 3816 | unsigned int i; |
| 3817 | |
| 3818 | i = rx_ring->next_to_use; |
| 3819 | buffer_info = &rx_ring->buffer_info[i]; |
| 3820 | |
| 3821 | while (cleaned_count--) { |
| 3822 | rx_desc = E1000_RX_DESC_ADV(*rx_ring, i); |
| 3823 | |
| 3824 | if (adapter->rx_ps_hdr_size && !buffer_info->page) { |
| 3825 | buffer_info->page = alloc_page(GFP_ATOMIC); |
| 3826 | if (!buffer_info->page) { |
| 3827 | adapter->alloc_rx_buff_failed++; |
| 3828 | goto no_buffers; |
| 3829 | } |
| 3830 | buffer_info->page_dma = |
| 3831 | pci_map_page(pdev, |
| 3832 | buffer_info->page, |
| 3833 | 0, PAGE_SIZE, |
| 3834 | PCI_DMA_FROMDEVICE); |
| 3835 | } |
| 3836 | |
| 3837 | if (!buffer_info->skb) { |
| 3838 | int bufsz; |
| 3839 | |
| 3840 | if (adapter->rx_ps_hdr_size) |
| 3841 | bufsz = adapter->rx_ps_hdr_size; |
| 3842 | else |
| 3843 | bufsz = adapter->rx_buffer_len; |
| 3844 | bufsz += NET_IP_ALIGN; |
| 3845 | skb = netdev_alloc_skb(netdev, bufsz); |
| 3846 | |
| 3847 | if (!skb) { |
| 3848 | adapter->alloc_rx_buff_failed++; |
| 3849 | goto no_buffers; |
| 3850 | } |
| 3851 | |
| 3852 | /* Make buffer alignment 2 beyond a 16 byte boundary |
| 3853 | * this will result in a 16 byte aligned IP header after |
| 3854 | * the 14 byte MAC header is removed |
| 3855 | */ |
| 3856 | skb_reserve(skb, NET_IP_ALIGN); |
| 3857 | |
| 3858 | buffer_info->skb = skb; |
| 3859 | buffer_info->dma = pci_map_single(pdev, skb->data, |
| 3860 | bufsz, |
| 3861 | PCI_DMA_FROMDEVICE); |
| 3862 | |
| 3863 | } |
| 3864 | /* Refresh the desc even if buffer_addrs didn't change because |
| 3865 | * each write-back erases this info. */ |
| 3866 | if (adapter->rx_ps_hdr_size) { |
| 3867 | rx_desc->read.pkt_addr = |
| 3868 | cpu_to_le64(buffer_info->page_dma); |
| 3869 | rx_desc->read.hdr_addr = cpu_to_le64(buffer_info->dma); |
| 3870 | } else { |
| 3871 | rx_desc->read.pkt_addr = |
| 3872 | cpu_to_le64(buffer_info->dma); |
| 3873 | rx_desc->read.hdr_addr = 0; |
| 3874 | } |
| 3875 | |
| 3876 | i++; |
| 3877 | if (i == rx_ring->count) |
| 3878 | i = 0; |
| 3879 | buffer_info = &rx_ring->buffer_info[i]; |
| 3880 | } |
| 3881 | |
| 3882 | no_buffers: |
| 3883 | if (rx_ring->next_to_use != i) { |
| 3884 | rx_ring->next_to_use = i; |
| 3885 | if (i == 0) |
| 3886 | i = (rx_ring->count - 1); |
| 3887 | else |
| 3888 | i--; |
| 3889 | |
| 3890 | /* Force memory writes to complete before letting h/w |
| 3891 | * know there are new descriptors to fetch. (Only |
| 3892 | * applicable for weak-ordered memory model archs, |
| 3893 | * such as IA-64). */ |
| 3894 | wmb(); |
| 3895 | writel(i, adapter->hw.hw_addr + rx_ring->tail); |
| 3896 | } |
| 3897 | } |
| 3898 | |
| 3899 | /** |
| 3900 | * igb_mii_ioctl - |
| 3901 | * @netdev: |
| 3902 | * @ifreq: |
| 3903 | * @cmd: |
| 3904 | **/ |
| 3905 | static int igb_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) |
| 3906 | { |
| 3907 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 3908 | struct mii_ioctl_data *data = if_mii(ifr); |
| 3909 | |
| 3910 | if (adapter->hw.phy.media_type != e1000_media_type_copper) |
| 3911 | return -EOPNOTSUPP; |
| 3912 | |
| 3913 | switch (cmd) { |
| 3914 | case SIOCGMIIPHY: |
| 3915 | data->phy_id = adapter->hw.phy.addr; |
| 3916 | break; |
| 3917 | case SIOCGMIIREG: |
| 3918 | if (!capable(CAP_NET_ADMIN)) |
| 3919 | return -EPERM; |
| 3920 | if (adapter->hw.phy.ops.read_phy_reg(&adapter->hw, |
| 3921 | data->reg_num |
| 3922 | & 0x1F, &data->val_out)) |
| 3923 | return -EIO; |
| 3924 | break; |
| 3925 | case SIOCSMIIREG: |
| 3926 | default: |
| 3927 | return -EOPNOTSUPP; |
| 3928 | } |
| 3929 | return 0; |
| 3930 | } |
| 3931 | |
| 3932 | /** |
| 3933 | * igb_ioctl - |
| 3934 | * @netdev: |
| 3935 | * @ifreq: |
| 3936 | * @cmd: |
| 3937 | **/ |
| 3938 | static int igb_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) |
| 3939 | { |
| 3940 | switch (cmd) { |
| 3941 | case SIOCGMIIPHY: |
| 3942 | case SIOCGMIIREG: |
| 3943 | case SIOCSMIIREG: |
| 3944 | return igb_mii_ioctl(netdev, ifr, cmd); |
| 3945 | default: |
| 3946 | return -EOPNOTSUPP; |
| 3947 | } |
| 3948 | } |
| 3949 | |
| 3950 | static void igb_vlan_rx_register(struct net_device *netdev, |
| 3951 | struct vlan_group *grp) |
| 3952 | { |
| 3953 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 3954 | struct e1000_hw *hw = &adapter->hw; |
| 3955 | u32 ctrl, rctl; |
| 3956 | |
| 3957 | igb_irq_disable(adapter); |
| 3958 | adapter->vlgrp = grp; |
| 3959 | |
| 3960 | if (grp) { |
| 3961 | /* enable VLAN tag insert/strip */ |
| 3962 | ctrl = rd32(E1000_CTRL); |
| 3963 | ctrl |= E1000_CTRL_VME; |
| 3964 | wr32(E1000_CTRL, ctrl); |
| 3965 | |
| 3966 | /* enable VLAN receive filtering */ |
| 3967 | rctl = rd32(E1000_RCTL); |
| 3968 | rctl |= E1000_RCTL_VFE; |
| 3969 | rctl &= ~E1000_RCTL_CFIEN; |
| 3970 | wr32(E1000_RCTL, rctl); |
| 3971 | igb_update_mng_vlan(adapter); |
| 3972 | wr32(E1000_RLPML, |
| 3973 | adapter->max_frame_size + VLAN_TAG_SIZE); |
| 3974 | } else { |
| 3975 | /* disable VLAN tag insert/strip */ |
| 3976 | ctrl = rd32(E1000_CTRL); |
| 3977 | ctrl &= ~E1000_CTRL_VME; |
| 3978 | wr32(E1000_CTRL, ctrl); |
| 3979 | |
| 3980 | /* disable VLAN filtering */ |
| 3981 | rctl = rd32(E1000_RCTL); |
| 3982 | rctl &= ~E1000_RCTL_VFE; |
| 3983 | wr32(E1000_RCTL, rctl); |
| 3984 | if (adapter->mng_vlan_id != (u16)IGB_MNG_VLAN_NONE) { |
| 3985 | igb_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); |
| 3986 | adapter->mng_vlan_id = IGB_MNG_VLAN_NONE; |
| 3987 | } |
| 3988 | wr32(E1000_RLPML, |
| 3989 | adapter->max_frame_size); |
| 3990 | } |
| 3991 | |
| 3992 | if (!test_bit(__IGB_DOWN, &adapter->state)) |
| 3993 | igb_irq_enable(adapter); |
| 3994 | } |
| 3995 | |
| 3996 | static void igb_vlan_rx_add_vid(struct net_device *netdev, u16 vid) |
| 3997 | { |
| 3998 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 3999 | struct e1000_hw *hw = &adapter->hw; |
| 4000 | u32 vfta, index; |
| 4001 | |
| 4002 | if ((adapter->hw.mng_cookie.status & |
| 4003 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN) && |
| 4004 | (vid == adapter->mng_vlan_id)) |
| 4005 | return; |
| 4006 | /* add VID to filter table */ |
| 4007 | index = (vid >> 5) & 0x7F; |
| 4008 | vfta = array_rd32(E1000_VFTA, index); |
| 4009 | vfta |= (1 << (vid & 0x1F)); |
| 4010 | igb_write_vfta(&adapter->hw, index, vfta); |
| 4011 | } |
| 4012 | |
| 4013 | static void igb_vlan_rx_kill_vid(struct net_device *netdev, u16 vid) |
| 4014 | { |
| 4015 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 4016 | struct e1000_hw *hw = &adapter->hw; |
| 4017 | u32 vfta, index; |
| 4018 | |
| 4019 | igb_irq_disable(adapter); |
| 4020 | vlan_group_set_device(adapter->vlgrp, vid, NULL); |
| 4021 | |
| 4022 | if (!test_bit(__IGB_DOWN, &adapter->state)) |
| 4023 | igb_irq_enable(adapter); |
| 4024 | |
| 4025 | if ((adapter->hw.mng_cookie.status & |
| 4026 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN) && |
| 4027 | (vid == adapter->mng_vlan_id)) { |
| 4028 | /* release control to f/w */ |
| 4029 | igb_release_hw_control(adapter); |
| 4030 | return; |
| 4031 | } |
| 4032 | |
| 4033 | /* remove VID from filter table */ |
| 4034 | index = (vid >> 5) & 0x7F; |
| 4035 | vfta = array_rd32(E1000_VFTA, index); |
| 4036 | vfta &= ~(1 << (vid & 0x1F)); |
| 4037 | igb_write_vfta(&adapter->hw, index, vfta); |
| 4038 | } |
| 4039 | |
| 4040 | static void igb_restore_vlan(struct igb_adapter *adapter) |
| 4041 | { |
| 4042 | igb_vlan_rx_register(adapter->netdev, adapter->vlgrp); |
| 4043 | |
| 4044 | if (adapter->vlgrp) { |
| 4045 | u16 vid; |
| 4046 | for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) { |
| 4047 | if (!vlan_group_get_device(adapter->vlgrp, vid)) |
| 4048 | continue; |
| 4049 | igb_vlan_rx_add_vid(adapter->netdev, vid); |
| 4050 | } |
| 4051 | } |
| 4052 | } |
| 4053 | |
| 4054 | int igb_set_spd_dplx(struct igb_adapter *adapter, u16 spddplx) |
| 4055 | { |
| 4056 | struct e1000_mac_info *mac = &adapter->hw.mac; |
| 4057 | |
| 4058 | mac->autoneg = 0; |
| 4059 | |
| 4060 | /* Fiber NICs only allow 1000 gbps Full duplex */ |
| 4061 | if ((adapter->hw.phy.media_type == e1000_media_type_fiber) && |
| 4062 | spddplx != (SPEED_1000 + DUPLEX_FULL)) { |
| 4063 | dev_err(&adapter->pdev->dev, |
| 4064 | "Unsupported Speed/Duplex configuration\n"); |
| 4065 | return -EINVAL; |
| 4066 | } |
| 4067 | |
| 4068 | switch (spddplx) { |
| 4069 | case SPEED_10 + DUPLEX_HALF: |
| 4070 | mac->forced_speed_duplex = ADVERTISE_10_HALF; |
| 4071 | break; |
| 4072 | case SPEED_10 + DUPLEX_FULL: |
| 4073 | mac->forced_speed_duplex = ADVERTISE_10_FULL; |
| 4074 | break; |
| 4075 | case SPEED_100 + DUPLEX_HALF: |
| 4076 | mac->forced_speed_duplex = ADVERTISE_100_HALF; |
| 4077 | break; |
| 4078 | case SPEED_100 + DUPLEX_FULL: |
| 4079 | mac->forced_speed_duplex = ADVERTISE_100_FULL; |
| 4080 | break; |
| 4081 | case SPEED_1000 + DUPLEX_FULL: |
| 4082 | mac->autoneg = 1; |
| 4083 | adapter->hw.phy.autoneg_advertised = ADVERTISE_1000_FULL; |
| 4084 | break; |
| 4085 | case SPEED_1000 + DUPLEX_HALF: /* not supported */ |
| 4086 | default: |
| 4087 | dev_err(&adapter->pdev->dev, |
| 4088 | "Unsupported Speed/Duplex configuration\n"); |
| 4089 | return -EINVAL; |
| 4090 | } |
| 4091 | return 0; |
| 4092 | } |
| 4093 | |
| 4094 | |
| 4095 | static int igb_suspend(struct pci_dev *pdev, pm_message_t state) |
| 4096 | { |
| 4097 | struct net_device *netdev = pci_get_drvdata(pdev); |
| 4098 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 4099 | struct e1000_hw *hw = &adapter->hw; |
| 4100 | u32 ctrl, ctrl_ext, rctl, status; |
| 4101 | u32 wufc = adapter->wol; |
| 4102 | #ifdef CONFIG_PM |
| 4103 | int retval = 0; |
| 4104 | #endif |
| 4105 | |
| 4106 | netif_device_detach(netdev); |
| 4107 | |
| 4108 | if (netif_running(netdev)) { |
| 4109 | WARN_ON(test_bit(__IGB_RESETTING, &adapter->state)); |
| 4110 | igb_down(adapter); |
| 4111 | igb_free_irq(adapter); |
| 4112 | } |
| 4113 | |
| 4114 | #ifdef CONFIG_PM |
| 4115 | retval = pci_save_state(pdev); |
| 4116 | if (retval) |
| 4117 | return retval; |
| 4118 | #endif |
| 4119 | |
| 4120 | status = rd32(E1000_STATUS); |
| 4121 | if (status & E1000_STATUS_LU) |
| 4122 | wufc &= ~E1000_WUFC_LNKC; |
| 4123 | |
| 4124 | if (wufc) { |
| 4125 | igb_setup_rctl(adapter); |
| 4126 | igb_set_multi(netdev); |
| 4127 | |
| 4128 | /* turn on all-multi mode if wake on multicast is enabled */ |
| 4129 | if (wufc & E1000_WUFC_MC) { |
| 4130 | rctl = rd32(E1000_RCTL); |
| 4131 | rctl |= E1000_RCTL_MPE; |
| 4132 | wr32(E1000_RCTL, rctl); |
| 4133 | } |
| 4134 | |
| 4135 | ctrl = rd32(E1000_CTRL); |
| 4136 | /* advertise wake from D3Cold */ |
| 4137 | #define E1000_CTRL_ADVD3WUC 0x00100000 |
| 4138 | /* phy power management enable */ |
| 4139 | #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000 |
| 4140 | ctrl |= E1000_CTRL_ADVD3WUC; |
| 4141 | wr32(E1000_CTRL, ctrl); |
| 4142 | |
| 4143 | if (adapter->hw.phy.media_type == e1000_media_type_fiber || |
| 4144 | adapter->hw.phy.media_type == |
| 4145 | e1000_media_type_internal_serdes) { |
| 4146 | /* keep the laser running in D3 */ |
| 4147 | ctrl_ext = rd32(E1000_CTRL_EXT); |
| 4148 | ctrl_ext |= E1000_CTRL_EXT_SDP7_DATA; |
| 4149 | wr32(E1000_CTRL_EXT, ctrl_ext); |
| 4150 | } |
| 4151 | |
| 4152 | /* Allow time for pending master requests to run */ |
| 4153 | igb_disable_pcie_master(&adapter->hw); |
| 4154 | |
| 4155 | wr32(E1000_WUC, E1000_WUC_PME_EN); |
| 4156 | wr32(E1000_WUFC, wufc); |
| 4157 | pci_enable_wake(pdev, PCI_D3hot, 1); |
| 4158 | pci_enable_wake(pdev, PCI_D3cold, 1); |
| 4159 | } else { |
| 4160 | wr32(E1000_WUC, 0); |
| 4161 | wr32(E1000_WUFC, 0); |
| 4162 | pci_enable_wake(pdev, PCI_D3hot, 0); |
| 4163 | pci_enable_wake(pdev, PCI_D3cold, 0); |
| 4164 | } |
| 4165 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4166 | /* make sure adapter isn't asleep if manageability is enabled */ |
| 4167 | if (adapter->en_mng_pt) { |
| 4168 | pci_enable_wake(pdev, PCI_D3hot, 1); |
| 4169 | pci_enable_wake(pdev, PCI_D3cold, 1); |
| 4170 | } |
| 4171 | |
| 4172 | /* Release control of h/w to f/w. If f/w is AMT enabled, this |
| 4173 | * would have already happened in close and is redundant. */ |
| 4174 | igb_release_hw_control(adapter); |
| 4175 | |
| 4176 | pci_disable_device(pdev); |
| 4177 | |
| 4178 | pci_set_power_state(pdev, pci_choose_state(pdev, state)); |
| 4179 | |
| 4180 | return 0; |
| 4181 | } |
| 4182 | |
| 4183 | #ifdef CONFIG_PM |
| 4184 | static int igb_resume(struct pci_dev *pdev) |
| 4185 | { |
| 4186 | struct net_device *netdev = pci_get_drvdata(pdev); |
| 4187 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 4188 | struct e1000_hw *hw = &adapter->hw; |
| 4189 | u32 err; |
| 4190 | |
| 4191 | pci_set_power_state(pdev, PCI_D0); |
| 4192 | pci_restore_state(pdev); |
Taku Izumi | 42bfd33a | 2008-06-20 12:10:30 +0900 | [diff] [blame] | 4193 | |
| 4194 | if (adapter->need_ioport) |
| 4195 | err = pci_enable_device(pdev); |
| 4196 | else |
| 4197 | err = pci_enable_device_mem(pdev); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4198 | if (err) { |
| 4199 | dev_err(&pdev->dev, |
| 4200 | "igb: Cannot enable PCI device from suspend\n"); |
| 4201 | return err; |
| 4202 | } |
| 4203 | pci_set_master(pdev); |
| 4204 | |
| 4205 | pci_enable_wake(pdev, PCI_D3hot, 0); |
| 4206 | pci_enable_wake(pdev, PCI_D3cold, 0); |
| 4207 | |
| 4208 | if (netif_running(netdev)) { |
| 4209 | err = igb_request_irq(adapter); |
| 4210 | if (err) |
| 4211 | return err; |
| 4212 | } |
| 4213 | |
| 4214 | /* e1000_power_up_phy(adapter); */ |
| 4215 | |
| 4216 | igb_reset(adapter); |
| 4217 | wr32(E1000_WUS, ~0); |
| 4218 | |
| 4219 | igb_init_manageability(adapter); |
| 4220 | |
| 4221 | if (netif_running(netdev)) |
| 4222 | igb_up(adapter); |
| 4223 | |
| 4224 | netif_device_attach(netdev); |
| 4225 | |
| 4226 | /* let the f/w know that the h/w is now under the control of the |
| 4227 | * driver. */ |
| 4228 | igb_get_hw_control(adapter); |
| 4229 | |
| 4230 | return 0; |
| 4231 | } |
| 4232 | #endif |
| 4233 | |
| 4234 | static void igb_shutdown(struct pci_dev *pdev) |
| 4235 | { |
| 4236 | igb_suspend(pdev, PMSG_SUSPEND); |
| 4237 | } |
| 4238 | |
| 4239 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 4240 | /* |
| 4241 | * Polling 'interrupt' - used by things like netconsole to send skbs |
| 4242 | * without having to re-enable interrupts. It's not called while |
| 4243 | * the interrupt routine is executing. |
| 4244 | */ |
| 4245 | static void igb_netpoll(struct net_device *netdev) |
| 4246 | { |
| 4247 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 4248 | int i; |
| 4249 | int work_done = 0; |
| 4250 | |
| 4251 | igb_irq_disable(adapter); |
| 4252 | for (i = 0; i < adapter->num_tx_queues; i++) |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 4253 | igb_clean_tx_irq(&adapter->tx_ring[i]); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4254 | |
| 4255 | for (i = 0; i < adapter->num_rx_queues; i++) |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 4256 | igb_clean_rx_irq_adv(&adapter->rx_ring[i], |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4257 | &work_done, |
| 4258 | adapter->rx_ring[i].napi.weight); |
| 4259 | |
| 4260 | igb_irq_enable(adapter); |
| 4261 | } |
| 4262 | #endif /* CONFIG_NET_POLL_CONTROLLER */ |
| 4263 | |
| 4264 | /** |
| 4265 | * igb_io_error_detected - called when PCI error is detected |
| 4266 | * @pdev: Pointer to PCI device |
| 4267 | * @state: The current pci connection state |
| 4268 | * |
| 4269 | * This function is called after a PCI bus error affecting |
| 4270 | * this device has been detected. |
| 4271 | */ |
| 4272 | static pci_ers_result_t igb_io_error_detected(struct pci_dev *pdev, |
| 4273 | pci_channel_state_t state) |
| 4274 | { |
| 4275 | struct net_device *netdev = pci_get_drvdata(pdev); |
| 4276 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 4277 | |
| 4278 | netif_device_detach(netdev); |
| 4279 | |
| 4280 | if (netif_running(netdev)) |
| 4281 | igb_down(adapter); |
| 4282 | pci_disable_device(pdev); |
| 4283 | |
| 4284 | /* Request a slot slot reset. */ |
| 4285 | return PCI_ERS_RESULT_NEED_RESET; |
| 4286 | } |
| 4287 | |
| 4288 | /** |
| 4289 | * igb_io_slot_reset - called after the pci bus has been reset. |
| 4290 | * @pdev: Pointer to PCI device |
| 4291 | * |
| 4292 | * Restart the card from scratch, as if from a cold-boot. Implementation |
| 4293 | * resembles the first-half of the igb_resume routine. |
| 4294 | */ |
| 4295 | static pci_ers_result_t igb_io_slot_reset(struct pci_dev *pdev) |
| 4296 | { |
| 4297 | struct net_device *netdev = pci_get_drvdata(pdev); |
| 4298 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 4299 | struct e1000_hw *hw = &adapter->hw; |
Taku Izumi | 42bfd33a | 2008-06-20 12:10:30 +0900 | [diff] [blame] | 4300 | int err; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4301 | |
Taku Izumi | 42bfd33a | 2008-06-20 12:10:30 +0900 | [diff] [blame] | 4302 | if (adapter->need_ioport) |
| 4303 | err = pci_enable_device(pdev); |
| 4304 | else |
| 4305 | err = pci_enable_device_mem(pdev); |
| 4306 | if (err) { |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4307 | dev_err(&pdev->dev, |
| 4308 | "Cannot re-enable PCI device after reset.\n"); |
| 4309 | return PCI_ERS_RESULT_DISCONNECT; |
| 4310 | } |
| 4311 | pci_set_master(pdev); |
Auke Kok | c682fc2 | 2008-04-23 11:09:34 -0700 | [diff] [blame] | 4312 | pci_restore_state(pdev); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4313 | |
| 4314 | pci_enable_wake(pdev, PCI_D3hot, 0); |
| 4315 | pci_enable_wake(pdev, PCI_D3cold, 0); |
| 4316 | |
| 4317 | igb_reset(adapter); |
| 4318 | wr32(E1000_WUS, ~0); |
| 4319 | |
| 4320 | return PCI_ERS_RESULT_RECOVERED; |
| 4321 | } |
| 4322 | |
| 4323 | /** |
| 4324 | * igb_io_resume - called when traffic can start flowing again. |
| 4325 | * @pdev: Pointer to PCI device |
| 4326 | * |
| 4327 | * This callback is called when the error recovery driver tells us that |
| 4328 | * its OK to resume normal operation. Implementation resembles the |
| 4329 | * second-half of the igb_resume routine. |
| 4330 | */ |
| 4331 | static void igb_io_resume(struct pci_dev *pdev) |
| 4332 | { |
| 4333 | struct net_device *netdev = pci_get_drvdata(pdev); |
| 4334 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 4335 | |
| 4336 | igb_init_manageability(adapter); |
| 4337 | |
| 4338 | if (netif_running(netdev)) { |
| 4339 | if (igb_up(adapter)) { |
| 4340 | dev_err(&pdev->dev, "igb_up failed after reset\n"); |
| 4341 | return; |
| 4342 | } |
| 4343 | } |
| 4344 | |
| 4345 | netif_device_attach(netdev); |
| 4346 | |
| 4347 | /* let the f/w know that the h/w is now under the control of the |
| 4348 | * driver. */ |
| 4349 | igb_get_hw_control(adapter); |
| 4350 | |
| 4351 | } |
| 4352 | |
| 4353 | /* igb_main.c */ |