Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1 | /******************************************************************************* |
| 2 | |
| 3 | Intel(R) Gigabit Ethernet Linux driver |
Alexander Duyck | 86d5d38 | 2009-02-06 23:23:12 +0000 | [diff] [blame] | 4 | Copyright(c) 2007-2009 Intel Corporation. |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 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> |
Alexander Duyck | c54106b | 2008-10-16 21:26:57 -0700 | [diff] [blame] | 41 | #include <linux/pci-aspm.h> |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 42 | #include <linux/delay.h> |
| 43 | #include <linux/interrupt.h> |
| 44 | #include <linux/if_ether.h> |
Alexander Duyck | 40a914f | 2008-11-27 00:24:37 -0800 | [diff] [blame] | 45 | #include <linux/aer.h> |
Jeff Kirsher | 421e02f | 2008-10-17 11:08:31 -0700 | [diff] [blame] | 46 | #ifdef CONFIG_IGB_DCA |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 47 | #include <linux/dca.h> |
| 48 | #endif |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 49 | #include "igb.h" |
| 50 | |
Alexander Duyck | 86d5d38 | 2009-02-06 23:23:12 +0000 | [diff] [blame] | 51 | #define DRV_VERSION "1.3.16-k2" |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 52 | char igb_driver_name[] = "igb"; |
| 53 | char igb_driver_version[] = DRV_VERSION; |
| 54 | static const char igb_driver_string[] = |
| 55 | "Intel(R) Gigabit Ethernet Network Driver"; |
Alexander Duyck | 86d5d38 | 2009-02-06 23:23:12 +0000 | [diff] [blame] | 56 | static const char igb_copyright[] = "Copyright (c) 2007-2009 Intel Corporation."; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 57 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 58 | static const struct e1000_info *igb_info_tbl[] = { |
| 59 | [board_82575] = &e1000_82575_info, |
| 60 | }; |
| 61 | |
| 62 | static struct pci_device_id igb_pci_tbl[] = { |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 63 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576), board_82575 }, |
| 64 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_FIBER), board_82575 }, |
| 65 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_SERDES), board_82575 }, |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 66 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82575EB_COPPER), board_82575 }, |
| 67 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82575EB_FIBER_SERDES), board_82575 }, |
| 68 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82575GB_QUAD_COPPER), board_82575 }, |
| 69 | /* required last entry */ |
| 70 | {0, } |
| 71 | }; |
| 72 | |
| 73 | MODULE_DEVICE_TABLE(pci, igb_pci_tbl); |
| 74 | |
| 75 | void igb_reset(struct igb_adapter *); |
| 76 | static int igb_setup_all_tx_resources(struct igb_adapter *); |
| 77 | static int igb_setup_all_rx_resources(struct igb_adapter *); |
| 78 | static void igb_free_all_tx_resources(struct igb_adapter *); |
| 79 | static void igb_free_all_rx_resources(struct igb_adapter *); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 80 | void igb_update_stats(struct igb_adapter *); |
| 81 | static int igb_probe(struct pci_dev *, const struct pci_device_id *); |
| 82 | static void __devexit igb_remove(struct pci_dev *pdev); |
| 83 | static int igb_sw_init(struct igb_adapter *); |
| 84 | static int igb_open(struct net_device *); |
| 85 | static int igb_close(struct net_device *); |
| 86 | static void igb_configure_tx(struct igb_adapter *); |
| 87 | static void igb_configure_rx(struct igb_adapter *); |
| 88 | static void igb_setup_rctl(struct igb_adapter *); |
| 89 | static void igb_clean_all_tx_rings(struct igb_adapter *); |
| 90 | static void igb_clean_all_rx_rings(struct igb_adapter *); |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 91 | static void igb_clean_tx_ring(struct igb_ring *); |
| 92 | static void igb_clean_rx_ring(struct igb_ring *); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 93 | static void igb_set_multi(struct net_device *); |
| 94 | static void igb_update_phy_info(unsigned long); |
| 95 | static void igb_watchdog(unsigned long); |
| 96 | static void igb_watchdog_task(struct work_struct *); |
| 97 | static int igb_xmit_frame_ring_adv(struct sk_buff *, struct net_device *, |
| 98 | struct igb_ring *); |
| 99 | static int igb_xmit_frame_adv(struct sk_buff *skb, struct net_device *); |
| 100 | static struct net_device_stats *igb_get_stats(struct net_device *); |
| 101 | static int igb_change_mtu(struct net_device *, int); |
| 102 | static int igb_set_mac(struct net_device *, void *); |
| 103 | static irqreturn_t igb_intr(int irq, void *); |
| 104 | static irqreturn_t igb_intr_msi(int irq, void *); |
| 105 | static irqreturn_t igb_msix_other(int irq, void *); |
| 106 | static irqreturn_t igb_msix_rx(int irq, void *); |
| 107 | static irqreturn_t igb_msix_tx(int irq, void *); |
| 108 | static int igb_clean_rx_ring_msix(struct napi_struct *, int); |
Jeff Kirsher | 421e02f | 2008-10-17 11:08:31 -0700 | [diff] [blame] | 109 | #ifdef CONFIG_IGB_DCA |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 110 | static void igb_update_rx_dca(struct igb_ring *); |
| 111 | static void igb_update_tx_dca(struct igb_ring *); |
| 112 | static void igb_setup_dca(struct igb_adapter *); |
Jeff Kirsher | 421e02f | 2008-10-17 11:08:31 -0700 | [diff] [blame] | 113 | #endif /* CONFIG_IGB_DCA */ |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 114 | static bool igb_clean_tx_irq(struct igb_ring *); |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 115 | static int igb_poll(struct napi_struct *, int); |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 116 | static bool igb_clean_rx_irq_adv(struct igb_ring *, int *, int); |
| 117 | static void igb_alloc_rx_buffers_adv(struct igb_ring *, int); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 118 | static int igb_ioctl(struct net_device *, struct ifreq *, int cmd); |
| 119 | static void igb_tx_timeout(struct net_device *); |
| 120 | static void igb_reset_task(struct work_struct *); |
| 121 | static void igb_vlan_rx_register(struct net_device *, struct vlan_group *); |
| 122 | static void igb_vlan_rx_add_vid(struct net_device *, u16); |
| 123 | static void igb_vlan_rx_kill_vid(struct net_device *, u16); |
| 124 | static void igb_restore_vlan(struct igb_adapter *); |
| 125 | |
| 126 | static int igb_suspend(struct pci_dev *, pm_message_t); |
| 127 | #ifdef CONFIG_PM |
| 128 | static int igb_resume(struct pci_dev *); |
| 129 | #endif |
| 130 | static void igb_shutdown(struct pci_dev *); |
Jeff Kirsher | 421e02f | 2008-10-17 11:08:31 -0700 | [diff] [blame] | 131 | #ifdef CONFIG_IGB_DCA |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 132 | static int igb_notify_dca(struct notifier_block *, unsigned long, void *); |
| 133 | static struct notifier_block dca_notifier = { |
| 134 | .notifier_call = igb_notify_dca, |
| 135 | .next = NULL, |
| 136 | .priority = 0 |
| 137 | }; |
| 138 | #endif |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 139 | |
| 140 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 141 | /* for netdump / net console */ |
| 142 | static void igb_netpoll(struct net_device *); |
| 143 | #endif |
| 144 | |
| 145 | static pci_ers_result_t igb_io_error_detected(struct pci_dev *, |
| 146 | pci_channel_state_t); |
| 147 | static pci_ers_result_t igb_io_slot_reset(struct pci_dev *); |
| 148 | static void igb_io_resume(struct pci_dev *); |
| 149 | |
| 150 | static struct pci_error_handlers igb_err_handler = { |
| 151 | .error_detected = igb_io_error_detected, |
| 152 | .slot_reset = igb_io_slot_reset, |
| 153 | .resume = igb_io_resume, |
| 154 | }; |
| 155 | |
| 156 | |
| 157 | static struct pci_driver igb_driver = { |
| 158 | .name = igb_driver_name, |
| 159 | .id_table = igb_pci_tbl, |
| 160 | .probe = igb_probe, |
| 161 | .remove = __devexit_p(igb_remove), |
| 162 | #ifdef CONFIG_PM |
| 163 | /* Power Managment Hooks */ |
| 164 | .suspend = igb_suspend, |
| 165 | .resume = igb_resume, |
| 166 | #endif |
| 167 | .shutdown = igb_shutdown, |
| 168 | .err_handler = &igb_err_handler |
| 169 | }; |
| 170 | |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 171 | static int global_quad_port_a; /* global quad port a indication */ |
| 172 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 173 | MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>"); |
| 174 | MODULE_DESCRIPTION("Intel(R) Gigabit Ethernet Network Driver"); |
| 175 | MODULE_LICENSE("GPL"); |
| 176 | MODULE_VERSION(DRV_VERSION); |
| 177 | |
Patrick Ohly | 38c845c | 2009-02-12 05:03:41 +0000 | [diff] [blame^] | 178 | /** |
| 179 | * Scale the NIC clock cycle by a large factor so that |
| 180 | * relatively small clock corrections can be added or |
| 181 | * substracted at each clock tick. The drawbacks of a |
| 182 | * large factor are a) that the clock register overflows |
| 183 | * more quickly (not such a big deal) and b) that the |
| 184 | * increment per tick has to fit into 24 bits. |
| 185 | * |
| 186 | * Note that |
| 187 | * TIMINCA = IGB_TSYNC_CYCLE_TIME_IN_NANOSECONDS * |
| 188 | * IGB_TSYNC_SCALE |
| 189 | * TIMINCA += TIMINCA * adjustment [ppm] / 1e9 |
| 190 | * |
| 191 | * The base scale factor is intentionally a power of two |
| 192 | * so that the division in %struct timecounter can be done with |
| 193 | * a shift. |
| 194 | */ |
| 195 | #define IGB_TSYNC_SHIFT (19) |
| 196 | #define IGB_TSYNC_SCALE (1<<IGB_TSYNC_SHIFT) |
| 197 | |
| 198 | /** |
| 199 | * The duration of one clock cycle of the NIC. |
| 200 | * |
| 201 | * @todo This hard-coded value is part of the specification and might change |
| 202 | * in future hardware revisions. Add revision check. |
| 203 | */ |
| 204 | #define IGB_TSYNC_CYCLE_TIME_IN_NANOSECONDS 16 |
| 205 | |
| 206 | #if (IGB_TSYNC_SCALE * IGB_TSYNC_CYCLE_TIME_IN_NANOSECONDS) >= (1<<24) |
| 207 | # error IGB_TSYNC_SCALE and/or IGB_TSYNC_CYCLE_TIME_IN_NANOSECONDS are too large to fit into TIMINCA |
| 208 | #endif |
| 209 | |
| 210 | /** |
| 211 | * igb_read_clock - read raw cycle counter (to be used by time counter) |
| 212 | */ |
| 213 | static cycle_t igb_read_clock(const struct cyclecounter *tc) |
| 214 | { |
| 215 | struct igb_adapter *adapter = |
| 216 | container_of(tc, struct igb_adapter, cycles); |
| 217 | struct e1000_hw *hw = &adapter->hw; |
| 218 | u64 stamp; |
| 219 | |
| 220 | stamp = rd32(E1000_SYSTIML); |
| 221 | stamp |= (u64)rd32(E1000_SYSTIMH) << 32ULL; |
| 222 | |
| 223 | return stamp; |
| 224 | } |
| 225 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 226 | #ifdef DEBUG |
| 227 | /** |
| 228 | * igb_get_hw_dev_name - return device name string |
| 229 | * used by hardware layer to print debugging information |
| 230 | **/ |
| 231 | char *igb_get_hw_dev_name(struct e1000_hw *hw) |
| 232 | { |
| 233 | struct igb_adapter *adapter = hw->back; |
| 234 | return adapter->netdev->name; |
| 235 | } |
Patrick Ohly | 38c845c | 2009-02-12 05:03:41 +0000 | [diff] [blame^] | 236 | |
| 237 | /** |
| 238 | * igb_get_time_str - format current NIC and system time as string |
| 239 | */ |
| 240 | static char *igb_get_time_str(struct igb_adapter *adapter, |
| 241 | char buffer[160]) |
| 242 | { |
| 243 | cycle_t hw = adapter->cycles.read(&adapter->cycles); |
| 244 | struct timespec nic = ns_to_timespec(timecounter_read(&adapter->clock)); |
| 245 | struct timespec sys; |
| 246 | struct timespec delta; |
| 247 | getnstimeofday(&sys); |
| 248 | |
| 249 | delta = timespec_sub(nic, sys); |
| 250 | |
| 251 | sprintf(buffer, |
| 252 | "NIC %ld.%09lus, SYS %ld.%09lus, NIC-SYS %lds + %09luns", |
| 253 | (long)nic.tv_sec, nic.tv_nsec, |
| 254 | (long)sys.tv_sec, sys.tv_nsec, |
| 255 | (long)delta.tv_sec, delta.tv_nsec); |
| 256 | |
| 257 | return buffer; |
| 258 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 259 | #endif |
| 260 | |
| 261 | /** |
| 262 | * igb_init_module - Driver Registration Routine |
| 263 | * |
| 264 | * igb_init_module is the first routine called when the driver is |
| 265 | * loaded. All it does is register with the PCI subsystem. |
| 266 | **/ |
| 267 | static int __init igb_init_module(void) |
| 268 | { |
| 269 | int ret; |
| 270 | printk(KERN_INFO "%s - version %s\n", |
| 271 | igb_driver_string, igb_driver_version); |
| 272 | |
| 273 | printk(KERN_INFO "%s\n", igb_copyright); |
| 274 | |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 275 | global_quad_port_a = 0; |
| 276 | |
Jeff Kirsher | 421e02f | 2008-10-17 11:08:31 -0700 | [diff] [blame] | 277 | #ifdef CONFIG_IGB_DCA |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 278 | dca_register_notify(&dca_notifier); |
| 279 | #endif |
Alexander Duyck | bbd98fe | 2009-01-31 00:52:30 -0800 | [diff] [blame] | 280 | |
| 281 | ret = pci_register_driver(&igb_driver); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 282 | return ret; |
| 283 | } |
| 284 | |
| 285 | module_init(igb_init_module); |
| 286 | |
| 287 | /** |
| 288 | * igb_exit_module - Driver Exit Cleanup Routine |
| 289 | * |
| 290 | * igb_exit_module is called just before the driver is removed |
| 291 | * from memory. |
| 292 | **/ |
| 293 | static void __exit igb_exit_module(void) |
| 294 | { |
Jeff Kirsher | 421e02f | 2008-10-17 11:08:31 -0700 | [diff] [blame] | 295 | #ifdef CONFIG_IGB_DCA |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 296 | dca_unregister_notify(&dca_notifier); |
| 297 | #endif |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 298 | pci_unregister_driver(&igb_driver); |
| 299 | } |
| 300 | |
| 301 | module_exit(igb_exit_module); |
| 302 | |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 303 | #define Q_IDX_82576(i) (((i & 0x1) << 3) + (i >> 1)) |
| 304 | /** |
| 305 | * igb_cache_ring_register - Descriptor ring to register mapping |
| 306 | * @adapter: board private structure to initialize |
| 307 | * |
| 308 | * Once we know the feature-set enabled for the device, we'll cache |
| 309 | * the register offset the descriptor ring is assigned to. |
| 310 | **/ |
| 311 | static void igb_cache_ring_register(struct igb_adapter *adapter) |
| 312 | { |
| 313 | int i; |
| 314 | |
| 315 | switch (adapter->hw.mac.type) { |
| 316 | case e1000_82576: |
| 317 | /* The queues are allocated for virtualization such that VF 0 |
| 318 | * is allocated queues 0 and 8, VF 1 queues 1 and 9, etc. |
| 319 | * In order to avoid collision we start at the first free queue |
| 320 | * and continue consuming queues in the same sequence |
| 321 | */ |
| 322 | for (i = 0; i < adapter->num_rx_queues; i++) |
| 323 | adapter->rx_ring[i].reg_idx = Q_IDX_82576(i); |
| 324 | for (i = 0; i < adapter->num_tx_queues; i++) |
| 325 | adapter->tx_ring[i].reg_idx = Q_IDX_82576(i); |
| 326 | break; |
| 327 | case e1000_82575: |
| 328 | default: |
| 329 | for (i = 0; i < adapter->num_rx_queues; i++) |
| 330 | adapter->rx_ring[i].reg_idx = i; |
| 331 | for (i = 0; i < adapter->num_tx_queues; i++) |
| 332 | adapter->tx_ring[i].reg_idx = i; |
| 333 | break; |
| 334 | } |
| 335 | } |
| 336 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 337 | /** |
| 338 | * igb_alloc_queues - Allocate memory for all rings |
| 339 | * @adapter: board private structure to initialize |
| 340 | * |
| 341 | * We allocate one ring per queue at run-time since we don't know the |
| 342 | * number of queues at compile-time. |
| 343 | **/ |
| 344 | static int igb_alloc_queues(struct igb_adapter *adapter) |
| 345 | { |
| 346 | int i; |
| 347 | |
| 348 | adapter->tx_ring = kcalloc(adapter->num_tx_queues, |
| 349 | sizeof(struct igb_ring), GFP_KERNEL); |
| 350 | if (!adapter->tx_ring) |
| 351 | return -ENOMEM; |
| 352 | |
| 353 | adapter->rx_ring = kcalloc(adapter->num_rx_queues, |
| 354 | sizeof(struct igb_ring), GFP_KERNEL); |
| 355 | if (!adapter->rx_ring) { |
| 356 | kfree(adapter->tx_ring); |
| 357 | return -ENOMEM; |
| 358 | } |
| 359 | |
Alexander Duyck | 6eb5a7f | 2008-07-08 15:14:44 -0700 | [diff] [blame] | 360 | adapter->rx_ring->buddy = adapter->tx_ring; |
| 361 | |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 362 | for (i = 0; i < adapter->num_tx_queues; i++) { |
| 363 | struct igb_ring *ring = &(adapter->tx_ring[i]); |
Alexander Duyck | 68fd991 | 2008-11-20 00:48:10 -0800 | [diff] [blame] | 364 | ring->count = adapter->tx_ring_count; |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 365 | ring->adapter = adapter; |
| 366 | ring->queue_index = i; |
| 367 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 368 | for (i = 0; i < adapter->num_rx_queues; i++) { |
| 369 | struct igb_ring *ring = &(adapter->rx_ring[i]); |
Alexander Duyck | 68fd991 | 2008-11-20 00:48:10 -0800 | [diff] [blame] | 370 | ring->count = adapter->rx_ring_count; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 371 | ring->adapter = adapter; |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 372 | ring->queue_index = i; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 373 | ring->itr_register = E1000_ITR; |
| 374 | |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 375 | /* set a default napi handler for each rx_ring */ |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 376 | netif_napi_add(adapter->netdev, &ring->napi, igb_poll, 64); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 377 | } |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 378 | |
| 379 | igb_cache_ring_register(adapter); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 380 | return 0; |
| 381 | } |
| 382 | |
Alexander Duyck | a88f10e | 2008-07-08 15:13:38 -0700 | [diff] [blame] | 383 | static void igb_free_queues(struct igb_adapter *adapter) |
| 384 | { |
| 385 | int i; |
| 386 | |
| 387 | for (i = 0; i < adapter->num_rx_queues; i++) |
| 388 | netif_napi_del(&adapter->rx_ring[i].napi); |
| 389 | |
| 390 | kfree(adapter->tx_ring); |
| 391 | kfree(adapter->rx_ring); |
| 392 | } |
| 393 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 394 | #define IGB_N0_QUEUE -1 |
| 395 | static void igb_assign_vector(struct igb_adapter *adapter, int rx_queue, |
| 396 | int tx_queue, int msix_vector) |
| 397 | { |
| 398 | u32 msixbm = 0; |
| 399 | struct e1000_hw *hw = &adapter->hw; |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 400 | u32 ivar, index; |
| 401 | |
| 402 | switch (hw->mac.type) { |
| 403 | case e1000_82575: |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 404 | /* The 82575 assigns vectors using a bitmask, which matches the |
| 405 | bitmask for the EICR/EIMS/EIMC registers. To assign one |
| 406 | or more queues to a vector, we write the appropriate bits |
| 407 | into the MSIXBM register for that vector. */ |
| 408 | if (rx_queue > IGB_N0_QUEUE) { |
| 409 | msixbm = E1000_EICR_RX_QUEUE0 << rx_queue; |
| 410 | adapter->rx_ring[rx_queue].eims_value = msixbm; |
| 411 | } |
| 412 | if (tx_queue > IGB_N0_QUEUE) { |
| 413 | msixbm |= E1000_EICR_TX_QUEUE0 << tx_queue; |
| 414 | adapter->tx_ring[tx_queue].eims_value = |
| 415 | E1000_EICR_TX_QUEUE0 << tx_queue; |
| 416 | } |
| 417 | array_wr32(E1000_MSIXBM(0), msix_vector, msixbm); |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 418 | break; |
| 419 | case e1000_82576: |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 420 | /* 82576 uses a table-based method for assigning vectors. |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 421 | Each queue has a single entry in the table to which we write |
| 422 | a vector number along with a "valid" bit. Sadly, the layout |
| 423 | of the table is somewhat counterintuitive. */ |
| 424 | if (rx_queue > IGB_N0_QUEUE) { |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 425 | index = (rx_queue >> 1); |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 426 | ivar = array_rd32(E1000_IVAR0, index); |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 427 | if (rx_queue & 0x1) { |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 428 | /* vector goes into third byte of register */ |
| 429 | ivar = ivar & 0xFF00FFFF; |
| 430 | ivar |= (msix_vector | E1000_IVAR_VALID) << 16; |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 431 | } else { |
| 432 | /* vector goes into low byte of register */ |
| 433 | ivar = ivar & 0xFFFFFF00; |
| 434 | ivar |= msix_vector | E1000_IVAR_VALID; |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 435 | } |
| 436 | adapter->rx_ring[rx_queue].eims_value= 1 << msix_vector; |
| 437 | array_wr32(E1000_IVAR0, index, ivar); |
| 438 | } |
| 439 | if (tx_queue > IGB_N0_QUEUE) { |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 440 | index = (tx_queue >> 1); |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 441 | ivar = array_rd32(E1000_IVAR0, index); |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 442 | if (tx_queue & 0x1) { |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 443 | /* vector goes into high byte of register */ |
| 444 | ivar = ivar & 0x00FFFFFF; |
| 445 | ivar |= (msix_vector | E1000_IVAR_VALID) << 24; |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 446 | } else { |
| 447 | /* vector goes into second byte of register */ |
| 448 | ivar = ivar & 0xFFFF00FF; |
| 449 | ivar |= (msix_vector | E1000_IVAR_VALID) << 8; |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 450 | } |
| 451 | adapter->tx_ring[tx_queue].eims_value= 1 << msix_vector; |
| 452 | array_wr32(E1000_IVAR0, index, ivar); |
| 453 | } |
| 454 | break; |
| 455 | default: |
| 456 | BUG(); |
| 457 | break; |
| 458 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 459 | } |
| 460 | |
| 461 | /** |
| 462 | * igb_configure_msix - Configure MSI-X hardware |
| 463 | * |
| 464 | * igb_configure_msix sets up the hardware to properly |
| 465 | * generate MSI-X interrupts. |
| 466 | **/ |
| 467 | static void igb_configure_msix(struct igb_adapter *adapter) |
| 468 | { |
| 469 | u32 tmp; |
| 470 | int i, vector = 0; |
| 471 | struct e1000_hw *hw = &adapter->hw; |
| 472 | |
| 473 | adapter->eims_enable_mask = 0; |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 474 | if (hw->mac.type == e1000_82576) |
| 475 | /* Turn on MSI-X capability first, or our settings |
| 476 | * won't stick. And it will take days to debug. */ |
| 477 | wr32(E1000_GPIE, E1000_GPIE_MSIX_MODE | |
Alexander Duyck | eebbbdb | 2009-02-06 23:19:29 +0000 | [diff] [blame] | 478 | E1000_GPIE_PBA | E1000_GPIE_EIAME | |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 479 | E1000_GPIE_NSICR); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 480 | |
| 481 | for (i = 0; i < adapter->num_tx_queues; i++) { |
| 482 | struct igb_ring *tx_ring = &adapter->tx_ring[i]; |
| 483 | igb_assign_vector(adapter, IGB_N0_QUEUE, i, vector++); |
| 484 | adapter->eims_enable_mask |= tx_ring->eims_value; |
| 485 | if (tx_ring->itr_val) |
Alexander Duyck | 6eb5a7f | 2008-07-08 15:14:44 -0700 | [diff] [blame] | 486 | writel(tx_ring->itr_val, |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 487 | hw->hw_addr + tx_ring->itr_register); |
| 488 | else |
| 489 | writel(1, hw->hw_addr + tx_ring->itr_register); |
| 490 | } |
| 491 | |
| 492 | for (i = 0; i < adapter->num_rx_queues; i++) { |
| 493 | struct igb_ring *rx_ring = &adapter->rx_ring[i]; |
Harvey Harrison | 25ac3c2 | 2008-07-16 12:45:27 -0700 | [diff] [blame] | 494 | rx_ring->buddy = NULL; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 495 | igb_assign_vector(adapter, i, IGB_N0_QUEUE, vector++); |
| 496 | adapter->eims_enable_mask |= rx_ring->eims_value; |
| 497 | if (rx_ring->itr_val) |
Alexander Duyck | 6eb5a7f | 2008-07-08 15:14:44 -0700 | [diff] [blame] | 498 | writel(rx_ring->itr_val, |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 499 | hw->hw_addr + rx_ring->itr_register); |
| 500 | else |
| 501 | writel(1, hw->hw_addr + rx_ring->itr_register); |
| 502 | } |
| 503 | |
| 504 | |
| 505 | /* set vector for other causes, i.e. link changes */ |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 506 | switch (hw->mac.type) { |
| 507 | case e1000_82575: |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 508 | array_wr32(E1000_MSIXBM(0), vector++, |
| 509 | E1000_EIMS_OTHER); |
| 510 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 511 | tmp = rd32(E1000_CTRL_EXT); |
| 512 | /* enable MSI-X PBA support*/ |
| 513 | tmp |= E1000_CTRL_EXT_PBA_CLR; |
| 514 | |
| 515 | /* Auto-Mask interrupts upon ICR read. */ |
| 516 | tmp |= E1000_CTRL_EXT_EIAME; |
| 517 | tmp |= E1000_CTRL_EXT_IRCA; |
| 518 | |
| 519 | wr32(E1000_CTRL_EXT, tmp); |
| 520 | adapter->eims_enable_mask |= E1000_EIMS_OTHER; |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 521 | adapter->eims_other = E1000_EIMS_OTHER; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 522 | |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 523 | break; |
| 524 | |
| 525 | case e1000_82576: |
| 526 | tmp = (vector++ | E1000_IVAR_VALID) << 8; |
| 527 | wr32(E1000_IVAR_MISC, tmp); |
| 528 | |
| 529 | adapter->eims_enable_mask = (1 << (vector)) - 1; |
| 530 | adapter->eims_other = 1 << (vector - 1); |
| 531 | break; |
| 532 | default: |
| 533 | /* do nothing, since nothing else supports MSI-X */ |
| 534 | break; |
| 535 | } /* switch (hw->mac.type) */ |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 536 | wrfl(); |
| 537 | } |
| 538 | |
| 539 | /** |
| 540 | * igb_request_msix - Initialize MSI-X interrupts |
| 541 | * |
| 542 | * igb_request_msix allocates MSI-X vectors and requests interrupts from the |
| 543 | * kernel. |
| 544 | **/ |
| 545 | static int igb_request_msix(struct igb_adapter *adapter) |
| 546 | { |
| 547 | struct net_device *netdev = adapter->netdev; |
| 548 | int i, err = 0, vector = 0; |
| 549 | |
| 550 | vector = 0; |
| 551 | |
| 552 | for (i = 0; i < adapter->num_tx_queues; i++) { |
| 553 | struct igb_ring *ring = &(adapter->tx_ring[i]); |
Alexander Duyck | cb7b48f | 2008-12-05 15:08:03 -0800 | [diff] [blame] | 554 | sprintf(ring->name, "%s-tx-%d", netdev->name, i); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 555 | err = request_irq(adapter->msix_entries[vector].vector, |
| 556 | &igb_msix_tx, 0, ring->name, |
| 557 | &(adapter->tx_ring[i])); |
| 558 | if (err) |
| 559 | goto out; |
| 560 | ring->itr_register = E1000_EITR(0) + (vector << 2); |
Alexander Duyck | 6eb5a7f | 2008-07-08 15:14:44 -0700 | [diff] [blame] | 561 | ring->itr_val = 976; /* ~4000 ints/sec */ |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 562 | vector++; |
| 563 | } |
| 564 | for (i = 0; i < adapter->num_rx_queues; i++) { |
| 565 | struct igb_ring *ring = &(adapter->rx_ring[i]); |
| 566 | if (strlen(netdev->name) < (IFNAMSIZ - 5)) |
Alexander Duyck | cb7b48f | 2008-12-05 15:08:03 -0800 | [diff] [blame] | 567 | sprintf(ring->name, "%s-rx-%d", netdev->name, i); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 568 | else |
| 569 | memcpy(ring->name, netdev->name, IFNAMSIZ); |
| 570 | err = request_irq(adapter->msix_entries[vector].vector, |
| 571 | &igb_msix_rx, 0, ring->name, |
| 572 | &(adapter->rx_ring[i])); |
| 573 | if (err) |
| 574 | goto out; |
| 575 | ring->itr_register = E1000_EITR(0) + (vector << 2); |
| 576 | ring->itr_val = adapter->itr; |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 577 | /* overwrite the poll routine for MSIX, we've already done |
| 578 | * netif_napi_add */ |
| 579 | ring->napi.poll = &igb_clean_rx_ring_msix; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 580 | vector++; |
| 581 | } |
| 582 | |
| 583 | err = request_irq(adapter->msix_entries[vector].vector, |
| 584 | &igb_msix_other, 0, netdev->name, netdev); |
| 585 | if (err) |
| 586 | goto out; |
| 587 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 588 | igb_configure_msix(adapter); |
| 589 | return 0; |
| 590 | out: |
| 591 | return err; |
| 592 | } |
| 593 | |
| 594 | static void igb_reset_interrupt_capability(struct igb_adapter *adapter) |
| 595 | { |
| 596 | if (adapter->msix_entries) { |
| 597 | pci_disable_msix(adapter->pdev); |
| 598 | kfree(adapter->msix_entries); |
| 599 | adapter->msix_entries = NULL; |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 600 | } else if (adapter->flags & IGB_FLAG_HAS_MSI) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 601 | pci_disable_msi(adapter->pdev); |
| 602 | return; |
| 603 | } |
| 604 | |
| 605 | |
| 606 | /** |
| 607 | * igb_set_interrupt_capability - set MSI or MSI-X if supported |
| 608 | * |
| 609 | * Attempt to configure interrupts using the best available |
| 610 | * capabilities of the hardware and kernel. |
| 611 | **/ |
| 612 | static void igb_set_interrupt_capability(struct igb_adapter *adapter) |
| 613 | { |
| 614 | int err; |
| 615 | int numvecs, i; |
| 616 | |
Alexander Duyck | 83b7180 | 2009-02-06 23:15:45 +0000 | [diff] [blame] | 617 | /* Number of supported queues. */ |
| 618 | /* Having more queues than CPUs doesn't make sense. */ |
| 619 | adapter->num_rx_queues = min_t(u32, IGB_MAX_RX_QUEUES, num_online_cpus()); |
| 620 | adapter->num_tx_queues = min_t(u32, IGB_MAX_TX_QUEUES, num_online_cpus()); |
| 621 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 622 | numvecs = adapter->num_tx_queues + adapter->num_rx_queues + 1; |
| 623 | adapter->msix_entries = kcalloc(numvecs, sizeof(struct msix_entry), |
| 624 | GFP_KERNEL); |
| 625 | if (!adapter->msix_entries) |
| 626 | goto msi_only; |
| 627 | |
| 628 | for (i = 0; i < numvecs; i++) |
| 629 | adapter->msix_entries[i].entry = i; |
| 630 | |
| 631 | err = pci_enable_msix(adapter->pdev, |
| 632 | adapter->msix_entries, |
| 633 | numvecs); |
| 634 | if (err == 0) |
Alexander Duyck | 34a20e8 | 2008-08-26 04:25:13 -0700 | [diff] [blame] | 635 | goto out; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 636 | |
| 637 | igb_reset_interrupt_capability(adapter); |
| 638 | |
| 639 | /* If we can't do MSI-X, try MSI */ |
| 640 | msi_only: |
| 641 | adapter->num_rx_queues = 1; |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 642 | adapter->num_tx_queues = 1; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 643 | if (!pci_enable_msi(adapter->pdev)) |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 644 | adapter->flags |= IGB_FLAG_HAS_MSI; |
Alexander Duyck | 34a20e8 | 2008-08-26 04:25:13 -0700 | [diff] [blame] | 645 | out: |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 646 | /* Notify the stack of the (possibly) reduced Tx Queue count. */ |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 647 | adapter->netdev->real_num_tx_queues = adapter->num_tx_queues; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 648 | return; |
| 649 | } |
| 650 | |
| 651 | /** |
| 652 | * igb_request_irq - initialize interrupts |
| 653 | * |
| 654 | * Attempts to configure interrupts using the best available |
| 655 | * capabilities of the hardware and kernel. |
| 656 | **/ |
| 657 | static int igb_request_irq(struct igb_adapter *adapter) |
| 658 | { |
| 659 | struct net_device *netdev = adapter->netdev; |
| 660 | struct e1000_hw *hw = &adapter->hw; |
| 661 | int err = 0; |
| 662 | |
| 663 | if (adapter->msix_entries) { |
| 664 | err = igb_request_msix(adapter); |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 665 | if (!err) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 666 | goto request_done; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 667 | /* fall back to MSI */ |
| 668 | igb_reset_interrupt_capability(adapter); |
| 669 | if (!pci_enable_msi(adapter->pdev)) |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 670 | adapter->flags |= IGB_FLAG_HAS_MSI; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 671 | igb_free_all_tx_resources(adapter); |
| 672 | igb_free_all_rx_resources(adapter); |
| 673 | adapter->num_rx_queues = 1; |
| 674 | igb_alloc_queues(adapter); |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 675 | } else { |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 676 | switch (hw->mac.type) { |
| 677 | case e1000_82575: |
| 678 | wr32(E1000_MSIXBM(0), |
| 679 | (E1000_EICR_RX_QUEUE0 | E1000_EIMS_OTHER)); |
| 680 | break; |
| 681 | case e1000_82576: |
| 682 | wr32(E1000_IVAR0, E1000_IVAR_VALID); |
| 683 | break; |
| 684 | default: |
| 685 | break; |
| 686 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 687 | } |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 688 | |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 689 | if (adapter->flags & IGB_FLAG_HAS_MSI) { |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 690 | err = request_irq(adapter->pdev->irq, &igb_intr_msi, 0, |
| 691 | netdev->name, netdev); |
| 692 | if (!err) |
| 693 | goto request_done; |
| 694 | /* fall back to legacy interrupts */ |
| 695 | igb_reset_interrupt_capability(adapter); |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 696 | adapter->flags &= ~IGB_FLAG_HAS_MSI; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 697 | } |
| 698 | |
| 699 | err = request_irq(adapter->pdev->irq, &igb_intr, IRQF_SHARED, |
| 700 | netdev->name, netdev); |
| 701 | |
Andy Gospodarek | 6cb5e57 | 2008-02-15 14:05:25 -0800 | [diff] [blame] | 702 | if (err) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 703 | dev_err(&adapter->pdev->dev, "Error %d getting interrupt\n", |
| 704 | err); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 705 | |
| 706 | request_done: |
| 707 | return err; |
| 708 | } |
| 709 | |
| 710 | static void igb_free_irq(struct igb_adapter *adapter) |
| 711 | { |
| 712 | struct net_device *netdev = adapter->netdev; |
| 713 | |
| 714 | if (adapter->msix_entries) { |
| 715 | int vector = 0, i; |
| 716 | |
| 717 | for (i = 0; i < adapter->num_tx_queues; i++) |
| 718 | free_irq(adapter->msix_entries[vector++].vector, |
| 719 | &(adapter->tx_ring[i])); |
| 720 | for (i = 0; i < adapter->num_rx_queues; i++) |
| 721 | free_irq(adapter->msix_entries[vector++].vector, |
| 722 | &(adapter->rx_ring[i])); |
| 723 | |
| 724 | free_irq(adapter->msix_entries[vector++].vector, netdev); |
| 725 | return; |
| 726 | } |
| 727 | |
| 728 | free_irq(adapter->pdev->irq, netdev); |
| 729 | } |
| 730 | |
| 731 | /** |
| 732 | * igb_irq_disable - Mask off interrupt generation on the NIC |
| 733 | * @adapter: board private structure |
| 734 | **/ |
| 735 | static void igb_irq_disable(struct igb_adapter *adapter) |
| 736 | { |
| 737 | struct e1000_hw *hw = &adapter->hw; |
| 738 | |
| 739 | if (adapter->msix_entries) { |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 740 | wr32(E1000_EIAM, 0); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 741 | wr32(E1000_EIMC, ~0); |
| 742 | wr32(E1000_EIAC, 0); |
| 743 | } |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 744 | |
| 745 | wr32(E1000_IAM, 0); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 746 | wr32(E1000_IMC, ~0); |
| 747 | wrfl(); |
| 748 | synchronize_irq(adapter->pdev->irq); |
| 749 | } |
| 750 | |
| 751 | /** |
| 752 | * igb_irq_enable - Enable default interrupt generation settings |
| 753 | * @adapter: board private structure |
| 754 | **/ |
| 755 | static void igb_irq_enable(struct igb_adapter *adapter) |
| 756 | { |
| 757 | struct e1000_hw *hw = &adapter->hw; |
| 758 | |
| 759 | if (adapter->msix_entries) { |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 760 | wr32(E1000_EIAC, adapter->eims_enable_mask); |
| 761 | wr32(E1000_EIAM, adapter->eims_enable_mask); |
| 762 | wr32(E1000_EIMS, adapter->eims_enable_mask); |
Alexander Duyck | dda0e08 | 2009-02-06 23:19:08 +0000 | [diff] [blame] | 763 | wr32(E1000_IMS, E1000_IMS_LSC | E1000_IMS_DOUTSYNC); |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 764 | } else { |
| 765 | wr32(E1000_IMS, IMS_ENABLE_MASK); |
| 766 | wr32(E1000_IAM, IMS_ENABLE_MASK); |
| 767 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 768 | } |
| 769 | |
| 770 | static void igb_update_mng_vlan(struct igb_adapter *adapter) |
| 771 | { |
| 772 | struct net_device *netdev = adapter->netdev; |
| 773 | u16 vid = adapter->hw.mng_cookie.vlan_id; |
| 774 | u16 old_vid = adapter->mng_vlan_id; |
| 775 | if (adapter->vlgrp) { |
| 776 | if (!vlan_group_get_device(adapter->vlgrp, vid)) { |
| 777 | if (adapter->hw.mng_cookie.status & |
| 778 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN) { |
| 779 | igb_vlan_rx_add_vid(netdev, vid); |
| 780 | adapter->mng_vlan_id = vid; |
| 781 | } else |
| 782 | adapter->mng_vlan_id = IGB_MNG_VLAN_NONE; |
| 783 | |
| 784 | if ((old_vid != (u16)IGB_MNG_VLAN_NONE) && |
| 785 | (vid != old_vid) && |
| 786 | !vlan_group_get_device(adapter->vlgrp, old_vid)) |
| 787 | igb_vlan_rx_kill_vid(netdev, old_vid); |
| 788 | } else |
| 789 | adapter->mng_vlan_id = vid; |
| 790 | } |
| 791 | } |
| 792 | |
| 793 | /** |
| 794 | * igb_release_hw_control - release control of the h/w to f/w |
| 795 | * @adapter: address of board private structure |
| 796 | * |
| 797 | * igb_release_hw_control resets CTRL_EXT:DRV_LOAD bit. |
| 798 | * For ASF and Pass Through versions of f/w this means that the |
| 799 | * driver is no longer loaded. |
| 800 | * |
| 801 | **/ |
| 802 | static void igb_release_hw_control(struct igb_adapter *adapter) |
| 803 | { |
| 804 | struct e1000_hw *hw = &adapter->hw; |
| 805 | u32 ctrl_ext; |
| 806 | |
| 807 | /* Let firmware take over control of h/w */ |
| 808 | ctrl_ext = rd32(E1000_CTRL_EXT); |
| 809 | wr32(E1000_CTRL_EXT, |
| 810 | ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD); |
| 811 | } |
| 812 | |
| 813 | |
| 814 | /** |
| 815 | * igb_get_hw_control - get control of the h/w from f/w |
| 816 | * @adapter: address of board private structure |
| 817 | * |
| 818 | * igb_get_hw_control sets CTRL_EXT:DRV_LOAD bit. |
| 819 | * For ASF and Pass Through versions of f/w this means that |
| 820 | * the driver is loaded. |
| 821 | * |
| 822 | **/ |
| 823 | static void igb_get_hw_control(struct igb_adapter *adapter) |
| 824 | { |
| 825 | struct e1000_hw *hw = &adapter->hw; |
| 826 | u32 ctrl_ext; |
| 827 | |
| 828 | /* Let firmware know the driver has taken over */ |
| 829 | ctrl_ext = rd32(E1000_CTRL_EXT); |
| 830 | wr32(E1000_CTRL_EXT, |
| 831 | ctrl_ext | E1000_CTRL_EXT_DRV_LOAD); |
| 832 | } |
| 833 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 834 | /** |
| 835 | * igb_configure - configure the hardware for RX and TX |
| 836 | * @adapter: private board structure |
| 837 | **/ |
| 838 | static void igb_configure(struct igb_adapter *adapter) |
| 839 | { |
| 840 | struct net_device *netdev = adapter->netdev; |
| 841 | int i; |
| 842 | |
| 843 | igb_get_hw_control(adapter); |
| 844 | igb_set_multi(netdev); |
| 845 | |
| 846 | igb_restore_vlan(adapter); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 847 | |
| 848 | igb_configure_tx(adapter); |
| 849 | igb_setup_rctl(adapter); |
| 850 | igb_configure_rx(adapter); |
Alexander Duyck | 662d720 | 2008-06-27 11:00:29 -0700 | [diff] [blame] | 851 | |
| 852 | igb_rx_fifo_flush_82575(&adapter->hw); |
| 853 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 854 | /* call IGB_DESC_UNUSED which always leaves |
| 855 | * at least 1 descriptor unused to make sure |
| 856 | * next_to_use != next_to_clean */ |
| 857 | for (i = 0; i < adapter->num_rx_queues; i++) { |
| 858 | struct igb_ring *ring = &adapter->rx_ring[i]; |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 859 | igb_alloc_rx_buffers_adv(ring, IGB_DESC_UNUSED(ring)); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 860 | } |
| 861 | |
| 862 | |
| 863 | adapter->tx_queue_len = netdev->tx_queue_len; |
| 864 | } |
| 865 | |
| 866 | |
| 867 | /** |
| 868 | * igb_up - Open the interface and prepare it to handle traffic |
| 869 | * @adapter: board private structure |
| 870 | **/ |
| 871 | |
| 872 | int igb_up(struct igb_adapter *adapter) |
| 873 | { |
| 874 | struct e1000_hw *hw = &adapter->hw; |
| 875 | int i; |
| 876 | |
| 877 | /* hardware has been reset, we need to reload some things */ |
| 878 | igb_configure(adapter); |
| 879 | |
| 880 | clear_bit(__IGB_DOWN, &adapter->state); |
| 881 | |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 882 | for (i = 0; i < adapter->num_rx_queues; i++) |
| 883 | napi_enable(&adapter->rx_ring[i].napi); |
| 884 | if (adapter->msix_entries) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 885 | igb_configure_msix(adapter); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 886 | |
| 887 | /* Clear any pending interrupts. */ |
| 888 | rd32(E1000_ICR); |
| 889 | igb_irq_enable(adapter); |
| 890 | |
| 891 | /* Fire a link change interrupt to start the watchdog. */ |
| 892 | wr32(E1000_ICS, E1000_ICS_LSC); |
| 893 | return 0; |
| 894 | } |
| 895 | |
| 896 | void igb_down(struct igb_adapter *adapter) |
| 897 | { |
| 898 | struct e1000_hw *hw = &adapter->hw; |
| 899 | struct net_device *netdev = adapter->netdev; |
| 900 | u32 tctl, rctl; |
| 901 | int i; |
| 902 | |
| 903 | /* signal that we're down so the interrupt handler does not |
| 904 | * reschedule our watchdog timer */ |
| 905 | set_bit(__IGB_DOWN, &adapter->state); |
| 906 | |
| 907 | /* disable receives in the hardware */ |
| 908 | rctl = rd32(E1000_RCTL); |
| 909 | wr32(E1000_RCTL, rctl & ~E1000_RCTL_EN); |
| 910 | /* flush and sleep below */ |
| 911 | |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 912 | netif_tx_stop_all_queues(netdev); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 913 | |
| 914 | /* disable transmits in the hardware */ |
| 915 | tctl = rd32(E1000_TCTL); |
| 916 | tctl &= ~E1000_TCTL_EN; |
| 917 | wr32(E1000_TCTL, tctl); |
| 918 | /* flush both disables and wait for them to finish */ |
| 919 | wrfl(); |
| 920 | msleep(10); |
| 921 | |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 922 | for (i = 0; i < adapter->num_rx_queues; i++) |
| 923 | napi_disable(&adapter->rx_ring[i].napi); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 924 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 925 | igb_irq_disable(adapter); |
| 926 | |
| 927 | del_timer_sync(&adapter->watchdog_timer); |
| 928 | del_timer_sync(&adapter->phy_info_timer); |
| 929 | |
| 930 | netdev->tx_queue_len = adapter->tx_queue_len; |
| 931 | netif_carrier_off(netdev); |
Alexander Duyck | 04fe635 | 2009-02-06 23:22:32 +0000 | [diff] [blame] | 932 | |
| 933 | /* record the stats before reset*/ |
| 934 | igb_update_stats(adapter); |
| 935 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 936 | adapter->link_speed = 0; |
| 937 | adapter->link_duplex = 0; |
| 938 | |
Jeff Kirsher | 3023682 | 2008-06-24 17:01:15 -0700 | [diff] [blame] | 939 | if (!pci_channel_offline(adapter->pdev)) |
| 940 | igb_reset(adapter); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 941 | igb_clean_all_tx_rings(adapter); |
| 942 | igb_clean_all_rx_rings(adapter); |
| 943 | } |
| 944 | |
| 945 | void igb_reinit_locked(struct igb_adapter *adapter) |
| 946 | { |
| 947 | WARN_ON(in_interrupt()); |
| 948 | while (test_and_set_bit(__IGB_RESETTING, &adapter->state)) |
| 949 | msleep(1); |
| 950 | igb_down(adapter); |
| 951 | igb_up(adapter); |
| 952 | clear_bit(__IGB_RESETTING, &adapter->state); |
| 953 | } |
| 954 | |
| 955 | void igb_reset(struct igb_adapter *adapter) |
| 956 | { |
| 957 | struct e1000_hw *hw = &adapter->hw; |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 958 | struct e1000_mac_info *mac = &hw->mac; |
| 959 | struct e1000_fc_info *fc = &hw->fc; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 960 | u32 pba = 0, tx_space, min_tx_space, min_rx_space; |
| 961 | u16 hwm; |
| 962 | |
| 963 | /* Repartition Pba for greater than 9k mtu |
| 964 | * To take effect CTRL.RST is required. |
| 965 | */ |
Alexander Duyck | fa4dfae | 2009-02-06 23:21:31 +0000 | [diff] [blame] | 966 | switch (mac->type) { |
| 967 | case e1000_82576: |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 968 | pba = E1000_PBA_64K; |
Alexander Duyck | fa4dfae | 2009-02-06 23:21:31 +0000 | [diff] [blame] | 969 | break; |
| 970 | case e1000_82575: |
| 971 | default: |
| 972 | pba = E1000_PBA_34K; |
| 973 | break; |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 974 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 975 | |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 976 | if ((adapter->max_frame_size > ETH_FRAME_LEN + ETH_FCS_LEN) && |
| 977 | (mac->type < e1000_82576)) { |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 978 | /* adjust PBA for jumbo frames */ |
| 979 | wr32(E1000_PBA, pba); |
| 980 | |
| 981 | /* To maintain wire speed transmits, the Tx FIFO should be |
| 982 | * large enough to accommodate two full transmit packets, |
| 983 | * rounded up to the next 1KB and expressed in KB. Likewise, |
| 984 | * the Rx FIFO should be large enough to accommodate at least |
| 985 | * one full receive packet and is similarly rounded up and |
| 986 | * expressed in KB. */ |
| 987 | pba = rd32(E1000_PBA); |
| 988 | /* upper 16 bits has Tx packet buffer allocation size in KB */ |
| 989 | tx_space = pba >> 16; |
| 990 | /* lower 16 bits has Rx packet buffer allocation size in KB */ |
| 991 | pba &= 0xffff; |
| 992 | /* the tx fifo also stores 16 bytes of information about the tx |
| 993 | * but don't include ethernet FCS because hardware appends it */ |
| 994 | min_tx_space = (adapter->max_frame_size + |
| 995 | sizeof(struct e1000_tx_desc) - |
| 996 | ETH_FCS_LEN) * 2; |
| 997 | min_tx_space = ALIGN(min_tx_space, 1024); |
| 998 | min_tx_space >>= 10; |
| 999 | /* software strips receive CRC, so leave room for it */ |
| 1000 | min_rx_space = adapter->max_frame_size; |
| 1001 | min_rx_space = ALIGN(min_rx_space, 1024); |
| 1002 | min_rx_space >>= 10; |
| 1003 | |
| 1004 | /* If current Tx allocation is less than the min Tx FIFO size, |
| 1005 | * and the min Tx FIFO size is less than the current Rx FIFO |
| 1006 | * allocation, take space away from current Rx allocation */ |
| 1007 | if (tx_space < min_tx_space && |
| 1008 | ((min_tx_space - tx_space) < pba)) { |
| 1009 | pba = pba - (min_tx_space - tx_space); |
| 1010 | |
| 1011 | /* if short on rx space, rx wins and must trump tx |
| 1012 | * adjustment */ |
| 1013 | if (pba < min_rx_space) |
| 1014 | pba = min_rx_space; |
| 1015 | } |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 1016 | wr32(E1000_PBA, pba); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1017 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1018 | |
| 1019 | /* flow control settings */ |
| 1020 | /* The high water mark must be low enough to fit one full frame |
| 1021 | * (or the size used for early receive) above it in the Rx FIFO. |
| 1022 | * Set it to the lower of: |
| 1023 | * - 90% of the Rx FIFO size, or |
| 1024 | * - the full Rx FIFO size minus one full frame */ |
| 1025 | hwm = min(((pba << 10) * 9 / 10), |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 1026 | ((pba << 10) - 2 * adapter->max_frame_size)); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1027 | |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 1028 | if (mac->type < e1000_82576) { |
| 1029 | fc->high_water = hwm & 0xFFF8; /* 8-byte granularity */ |
| 1030 | fc->low_water = fc->high_water - 8; |
| 1031 | } else { |
| 1032 | fc->high_water = hwm & 0xFFF0; /* 16-byte granularity */ |
| 1033 | fc->low_water = fc->high_water - 16; |
| 1034 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1035 | fc->pause_time = 0xFFFF; |
| 1036 | fc->send_xon = 1; |
| 1037 | fc->type = fc->original_type; |
| 1038 | |
| 1039 | /* Allow time for pending master requests to run */ |
| 1040 | adapter->hw.mac.ops.reset_hw(&adapter->hw); |
| 1041 | wr32(E1000_WUC, 0); |
| 1042 | |
| 1043 | if (adapter->hw.mac.ops.init_hw(&adapter->hw)) |
| 1044 | dev_err(&adapter->pdev->dev, "Hardware Error\n"); |
| 1045 | |
| 1046 | igb_update_mng_vlan(adapter); |
| 1047 | |
| 1048 | /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */ |
| 1049 | wr32(E1000_VET, ETHERNET_IEEE_VLAN_TYPE); |
| 1050 | |
| 1051 | igb_reset_adaptive(&adapter->hw); |
Alexander Duyck | f5f4cf0 | 2008-11-21 21:30:24 -0800 | [diff] [blame] | 1052 | igb_get_phy_info(&adapter->hw); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1053 | } |
| 1054 | |
Stephen Hemminger | 2e5c692 | 2008-11-19 22:20:44 -0800 | [diff] [blame] | 1055 | static const struct net_device_ops igb_netdev_ops = { |
| 1056 | .ndo_open = igb_open, |
| 1057 | .ndo_stop = igb_close, |
Stephen Hemminger | 0082982 | 2008-11-20 20:14:53 -0800 | [diff] [blame] | 1058 | .ndo_start_xmit = igb_xmit_frame_adv, |
Stephen Hemminger | 2e5c692 | 2008-11-19 22:20:44 -0800 | [diff] [blame] | 1059 | .ndo_get_stats = igb_get_stats, |
| 1060 | .ndo_set_multicast_list = igb_set_multi, |
| 1061 | .ndo_set_mac_address = igb_set_mac, |
| 1062 | .ndo_change_mtu = igb_change_mtu, |
| 1063 | .ndo_do_ioctl = igb_ioctl, |
| 1064 | .ndo_tx_timeout = igb_tx_timeout, |
| 1065 | .ndo_validate_addr = eth_validate_addr, |
| 1066 | .ndo_vlan_rx_register = igb_vlan_rx_register, |
| 1067 | .ndo_vlan_rx_add_vid = igb_vlan_rx_add_vid, |
| 1068 | .ndo_vlan_rx_kill_vid = igb_vlan_rx_kill_vid, |
| 1069 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 1070 | .ndo_poll_controller = igb_netpoll, |
| 1071 | #endif |
| 1072 | }; |
| 1073 | |
Taku Izumi | 42bfd33a | 2008-06-20 12:10:30 +0900 | [diff] [blame] | 1074 | /** |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1075 | * igb_probe - Device Initialization Routine |
| 1076 | * @pdev: PCI device information struct |
| 1077 | * @ent: entry in igb_pci_tbl |
| 1078 | * |
| 1079 | * Returns 0 on success, negative on failure |
| 1080 | * |
| 1081 | * igb_probe initializes an adapter identified by a pci_dev structure. |
| 1082 | * The OS initialization, configuring of the adapter private structure, |
| 1083 | * and a hardware reset occur. |
| 1084 | **/ |
| 1085 | static int __devinit igb_probe(struct pci_dev *pdev, |
| 1086 | const struct pci_device_id *ent) |
| 1087 | { |
| 1088 | struct net_device *netdev; |
| 1089 | struct igb_adapter *adapter; |
| 1090 | struct e1000_hw *hw; |
Alexander Duyck | c54106b | 2008-10-16 21:26:57 -0700 | [diff] [blame] | 1091 | struct pci_dev *us_dev; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1092 | const struct e1000_info *ei = igb_info_tbl[ent->driver_data]; |
| 1093 | unsigned long mmio_start, mmio_len; |
Alexander Duyck | 450c87c | 2009-02-06 23:22:11 +0000 | [diff] [blame] | 1094 | int err, pci_using_dac, pos; |
Alexander Duyck | c54106b | 2008-10-16 21:26:57 -0700 | [diff] [blame] | 1095 | u16 eeprom_data = 0, state = 0; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1096 | u16 eeprom_apme_mask = IGB_EEPROM_APME; |
| 1097 | u32 part_num; |
| 1098 | |
Alexander Duyck | aed5dec | 2009-02-06 23:16:04 +0000 | [diff] [blame] | 1099 | err = pci_enable_device_mem(pdev); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1100 | if (err) |
| 1101 | return err; |
| 1102 | |
| 1103 | pci_using_dac = 0; |
| 1104 | err = pci_set_dma_mask(pdev, DMA_64BIT_MASK); |
| 1105 | if (!err) { |
| 1106 | err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK); |
| 1107 | if (!err) |
| 1108 | pci_using_dac = 1; |
| 1109 | } else { |
| 1110 | err = pci_set_dma_mask(pdev, DMA_32BIT_MASK); |
| 1111 | if (err) { |
| 1112 | err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK); |
| 1113 | if (err) { |
| 1114 | dev_err(&pdev->dev, "No usable DMA " |
| 1115 | "configuration, aborting\n"); |
| 1116 | goto err_dma; |
| 1117 | } |
| 1118 | } |
| 1119 | } |
| 1120 | |
Alexander Duyck | c54106b | 2008-10-16 21:26:57 -0700 | [diff] [blame] | 1121 | /* 82575 requires that the pci-e link partner disable the L0s state */ |
| 1122 | switch (pdev->device) { |
| 1123 | case E1000_DEV_ID_82575EB_COPPER: |
| 1124 | case E1000_DEV_ID_82575EB_FIBER_SERDES: |
| 1125 | case E1000_DEV_ID_82575GB_QUAD_COPPER: |
| 1126 | us_dev = pdev->bus->self; |
| 1127 | pos = pci_find_capability(us_dev, PCI_CAP_ID_EXP); |
| 1128 | if (pos) { |
| 1129 | pci_read_config_word(us_dev, pos + PCI_EXP_LNKCTL, |
| 1130 | &state); |
| 1131 | state &= ~PCIE_LINK_STATE_L0S; |
| 1132 | pci_write_config_word(us_dev, pos + PCI_EXP_LNKCTL, |
| 1133 | state); |
Bjorn Helgaas | ac45020 | 2008-11-13 06:20:10 +0000 | [diff] [blame] | 1134 | dev_info(&pdev->dev, |
| 1135 | "Disabling ASPM L0s upstream switch port %s\n", |
| 1136 | pci_name(us_dev)); |
Alexander Duyck | c54106b | 2008-10-16 21:26:57 -0700 | [diff] [blame] | 1137 | } |
| 1138 | default: |
| 1139 | break; |
| 1140 | } |
| 1141 | |
Alexander Duyck | aed5dec | 2009-02-06 23:16:04 +0000 | [diff] [blame] | 1142 | err = pci_request_selected_regions(pdev, pci_select_bars(pdev, |
| 1143 | IORESOURCE_MEM), |
| 1144 | igb_driver_name); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1145 | if (err) |
| 1146 | goto err_pci_reg; |
| 1147 | |
Jeff Kirsher | ea943d4 | 2008-12-11 20:34:19 -0800 | [diff] [blame] | 1148 | err = pci_enable_pcie_error_reporting(pdev); |
| 1149 | if (err) { |
| 1150 | dev_err(&pdev->dev, "pci_enable_pcie_error_reporting failed " |
| 1151 | "0x%x\n", err); |
| 1152 | /* non-fatal, continue */ |
| 1153 | } |
Alexander Duyck | 40a914f | 2008-11-27 00:24:37 -0800 | [diff] [blame] | 1154 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1155 | pci_set_master(pdev); |
Auke Kok | c682fc2 | 2008-04-23 11:09:34 -0700 | [diff] [blame] | 1156 | pci_save_state(pdev); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1157 | |
| 1158 | err = -ENOMEM; |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 1159 | netdev = alloc_etherdev_mq(sizeof(struct igb_adapter), IGB_MAX_TX_QUEUES); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1160 | if (!netdev) |
| 1161 | goto err_alloc_etherdev; |
| 1162 | |
| 1163 | SET_NETDEV_DEV(netdev, &pdev->dev); |
| 1164 | |
| 1165 | pci_set_drvdata(pdev, netdev); |
| 1166 | adapter = netdev_priv(netdev); |
| 1167 | adapter->netdev = netdev; |
| 1168 | adapter->pdev = pdev; |
| 1169 | hw = &adapter->hw; |
| 1170 | hw->back = adapter; |
| 1171 | adapter->msg_enable = NETIF_MSG_DRV | NETIF_MSG_PROBE; |
| 1172 | |
| 1173 | mmio_start = pci_resource_start(pdev, 0); |
| 1174 | mmio_len = pci_resource_len(pdev, 0); |
| 1175 | |
| 1176 | err = -EIO; |
Alexander Duyck | 28b0759 | 2009-02-06 23:20:31 +0000 | [diff] [blame] | 1177 | hw->hw_addr = ioremap(mmio_start, mmio_len); |
| 1178 | if (!hw->hw_addr) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1179 | goto err_ioremap; |
| 1180 | |
Stephen Hemminger | 2e5c692 | 2008-11-19 22:20:44 -0800 | [diff] [blame] | 1181 | netdev->netdev_ops = &igb_netdev_ops; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1182 | igb_set_ethtool_ops(netdev); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1183 | netdev->watchdog_timeo = 5 * HZ; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1184 | |
| 1185 | strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1); |
| 1186 | |
| 1187 | netdev->mem_start = mmio_start; |
| 1188 | netdev->mem_end = mmio_start + mmio_len; |
| 1189 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1190 | /* PCI config space info */ |
| 1191 | hw->vendor_id = pdev->vendor; |
| 1192 | hw->device_id = pdev->device; |
| 1193 | hw->revision_id = pdev->revision; |
| 1194 | hw->subsystem_vendor_id = pdev->subsystem_vendor; |
| 1195 | hw->subsystem_device_id = pdev->subsystem_device; |
| 1196 | |
| 1197 | /* setup the private structure */ |
| 1198 | hw->back = adapter; |
| 1199 | /* Copy the default MAC, PHY and NVM function pointers */ |
| 1200 | memcpy(&hw->mac.ops, ei->mac_ops, sizeof(hw->mac.ops)); |
| 1201 | memcpy(&hw->phy.ops, ei->phy_ops, sizeof(hw->phy.ops)); |
| 1202 | memcpy(&hw->nvm.ops, ei->nvm_ops, sizeof(hw->nvm.ops)); |
| 1203 | /* Initialize skew-specific constants */ |
| 1204 | err = ei->get_invariants(hw); |
| 1205 | if (err) |
Alexander Duyck | 450c87c | 2009-02-06 23:22:11 +0000 | [diff] [blame] | 1206 | goto err_sw_init; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1207 | |
Alexander Duyck | 450c87c | 2009-02-06 23:22:11 +0000 | [diff] [blame] | 1208 | /* setup the private structure */ |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1209 | err = igb_sw_init(adapter); |
| 1210 | if (err) |
| 1211 | goto err_sw_init; |
| 1212 | |
| 1213 | igb_get_bus_info_pcie(hw); |
| 1214 | |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 1215 | /* set flags */ |
| 1216 | switch (hw->mac.type) { |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 1217 | case e1000_82575: |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 1218 | adapter->flags |= IGB_FLAG_NEED_CTX_IDX; |
| 1219 | break; |
Alexander Duyck | bbd98fe | 2009-01-31 00:52:30 -0800 | [diff] [blame] | 1220 | case e1000_82576: |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 1221 | default: |
| 1222 | break; |
| 1223 | } |
| 1224 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1225 | hw->phy.autoneg_wait_to_complete = false; |
| 1226 | hw->mac.adaptive_ifs = true; |
| 1227 | |
| 1228 | /* Copper options */ |
| 1229 | if (hw->phy.media_type == e1000_media_type_copper) { |
| 1230 | hw->phy.mdix = AUTO_ALL_MODES; |
| 1231 | hw->phy.disable_polarity_correction = false; |
| 1232 | hw->phy.ms_type = e1000_ms_hw_default; |
| 1233 | } |
| 1234 | |
| 1235 | if (igb_check_reset_block(hw)) |
| 1236 | dev_info(&pdev->dev, |
| 1237 | "PHY reset is blocked due to SOL/IDER session.\n"); |
| 1238 | |
| 1239 | netdev->features = NETIF_F_SG | |
Alexander Duyck | 7d8eb29 | 2009-02-06 23:18:27 +0000 | [diff] [blame] | 1240 | NETIF_F_IP_CSUM | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1241 | NETIF_F_HW_VLAN_TX | |
| 1242 | NETIF_F_HW_VLAN_RX | |
| 1243 | NETIF_F_HW_VLAN_FILTER; |
| 1244 | |
Alexander Duyck | 7d8eb29 | 2009-02-06 23:18:27 +0000 | [diff] [blame] | 1245 | netdev->features |= NETIF_F_IPV6_CSUM; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1246 | netdev->features |= NETIF_F_TSO; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1247 | netdev->features |= NETIF_F_TSO6; |
Jeff Kirsher | 48f29ff | 2008-06-05 04:06:27 -0700 | [diff] [blame] | 1248 | |
Alexander Duyck | d335252 | 2008-07-08 15:12:13 -0700 | [diff] [blame] | 1249 | #ifdef CONFIG_IGB_LRO |
Herbert Xu | 5c0999b | 2009-01-19 15:20:57 -0800 | [diff] [blame] | 1250 | netdev->features |= NETIF_F_GRO; |
Alexander Duyck | d335252 | 2008-07-08 15:12:13 -0700 | [diff] [blame] | 1251 | #endif |
| 1252 | |
Jeff Kirsher | 48f29ff | 2008-06-05 04:06:27 -0700 | [diff] [blame] | 1253 | netdev->vlan_features |= NETIF_F_TSO; |
| 1254 | netdev->vlan_features |= NETIF_F_TSO6; |
Alexander Duyck | 7d8eb29 | 2009-02-06 23:18:27 +0000 | [diff] [blame] | 1255 | netdev->vlan_features |= NETIF_F_IP_CSUM; |
Jeff Kirsher | 48f29ff | 2008-06-05 04:06:27 -0700 | [diff] [blame] | 1256 | netdev->vlan_features |= NETIF_F_SG; |
| 1257 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1258 | if (pci_using_dac) |
| 1259 | netdev->features |= NETIF_F_HIGHDMA; |
| 1260 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1261 | adapter->en_mng_pt = igb_enable_mng_pass_thru(&adapter->hw); |
| 1262 | |
| 1263 | /* before reading the NVM, reset the controller to put the device in a |
| 1264 | * known good starting state */ |
| 1265 | hw->mac.ops.reset_hw(hw); |
| 1266 | |
| 1267 | /* make sure the NVM is good */ |
| 1268 | if (igb_validate_nvm_checksum(hw) < 0) { |
| 1269 | dev_err(&pdev->dev, "The NVM Checksum Is Not Valid\n"); |
| 1270 | err = -EIO; |
| 1271 | goto err_eeprom; |
| 1272 | } |
| 1273 | |
| 1274 | /* copy the MAC address out of the NVM */ |
| 1275 | if (hw->mac.ops.read_mac_addr(hw)) |
| 1276 | dev_err(&pdev->dev, "NVM Read Error\n"); |
| 1277 | |
| 1278 | memcpy(netdev->dev_addr, hw->mac.addr, netdev->addr_len); |
| 1279 | memcpy(netdev->perm_addr, hw->mac.addr, netdev->addr_len); |
| 1280 | |
| 1281 | if (!is_valid_ether_addr(netdev->perm_addr)) { |
| 1282 | dev_err(&pdev->dev, "Invalid MAC Address\n"); |
| 1283 | err = -EIO; |
| 1284 | goto err_eeprom; |
| 1285 | } |
| 1286 | |
| 1287 | init_timer(&adapter->watchdog_timer); |
| 1288 | adapter->watchdog_timer.function = &igb_watchdog; |
| 1289 | adapter->watchdog_timer.data = (unsigned long) adapter; |
| 1290 | |
| 1291 | init_timer(&adapter->phy_info_timer); |
| 1292 | adapter->phy_info_timer.function = &igb_update_phy_info; |
| 1293 | adapter->phy_info_timer.data = (unsigned long) adapter; |
| 1294 | |
| 1295 | INIT_WORK(&adapter->reset_task, igb_reset_task); |
| 1296 | INIT_WORK(&adapter->watchdog_task, igb_watchdog_task); |
| 1297 | |
Alexander Duyck | 450c87c | 2009-02-06 23:22:11 +0000 | [diff] [blame] | 1298 | /* Initialize link properties that are user-changeable */ |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1299 | adapter->fc_autoneg = true; |
| 1300 | hw->mac.autoneg = true; |
| 1301 | hw->phy.autoneg_advertised = 0x2f; |
| 1302 | |
| 1303 | hw->fc.original_type = e1000_fc_default; |
| 1304 | hw->fc.type = e1000_fc_default; |
| 1305 | |
| 1306 | adapter->itr_setting = 3; |
| 1307 | adapter->itr = IGB_START_ITR; |
| 1308 | |
| 1309 | igb_validate_mdi_setting(hw); |
| 1310 | |
| 1311 | adapter->rx_csum = 1; |
| 1312 | |
| 1313 | /* Initial Wake on LAN setting If APM wake is enabled in the EEPROM, |
| 1314 | * enable the ACPI Magic Packet filter |
| 1315 | */ |
| 1316 | |
| 1317 | if (hw->bus.func == 0 || |
| 1318 | hw->device_id == E1000_DEV_ID_82575EB_COPPER) |
Alexander Duyck | 312c75a | 2009-02-06 23:17:47 +0000 | [diff] [blame] | 1319 | hw->nvm.ops.read(hw, NVM_INIT_CONTROL3_PORT_A, 1, &eeprom_data); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1320 | |
| 1321 | if (eeprom_data & eeprom_apme_mask) |
| 1322 | adapter->eeprom_wol |= E1000_WUFC_MAG; |
| 1323 | |
| 1324 | /* now that we have the eeprom settings, apply the special cases where |
| 1325 | * the eeprom may be wrong or the board simply won't support wake on |
| 1326 | * lan on a particular port */ |
| 1327 | switch (pdev->device) { |
| 1328 | case E1000_DEV_ID_82575GB_QUAD_COPPER: |
| 1329 | adapter->eeprom_wol = 0; |
| 1330 | break; |
| 1331 | case E1000_DEV_ID_82575EB_FIBER_SERDES: |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 1332 | case E1000_DEV_ID_82576_FIBER: |
| 1333 | case E1000_DEV_ID_82576_SERDES: |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1334 | /* Wake events only supported on port A for dual fiber |
| 1335 | * regardless of eeprom setting */ |
| 1336 | if (rd32(E1000_STATUS) & E1000_STATUS_FUNC_1) |
| 1337 | adapter->eeprom_wol = 0; |
| 1338 | break; |
| 1339 | } |
| 1340 | |
| 1341 | /* initialize the wol settings based on the eeprom settings */ |
| 1342 | adapter->wol = adapter->eeprom_wol; |
\"Rafael J. Wysocki\ | e1b86d8 | 2008-11-07 20:30:37 +0000 | [diff] [blame] | 1343 | device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1344 | |
| 1345 | /* reset the hardware with the new settings */ |
| 1346 | igb_reset(adapter); |
| 1347 | |
| 1348 | /* let the f/w know that the h/w is now under the control of the |
| 1349 | * driver. */ |
| 1350 | igb_get_hw_control(adapter); |
| 1351 | |
| 1352 | /* tell the stack to leave us alone until igb_open() is called */ |
| 1353 | netif_carrier_off(netdev); |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 1354 | netif_tx_stop_all_queues(netdev); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1355 | |
| 1356 | strcpy(netdev->name, "eth%d"); |
| 1357 | err = register_netdev(netdev); |
| 1358 | if (err) |
| 1359 | goto err_register; |
| 1360 | |
Jeff Kirsher | 421e02f | 2008-10-17 11:08:31 -0700 | [diff] [blame] | 1361 | #ifdef CONFIG_IGB_DCA |
Alexander Duyck | bbd98fe | 2009-01-31 00:52:30 -0800 | [diff] [blame] | 1362 | if (dca_add_requester(&pdev->dev) == 0) { |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 1363 | adapter->flags |= IGB_FLAG_DCA_ENABLED; |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 1364 | dev_info(&pdev->dev, "DCA enabled\n"); |
| 1365 | /* Always use CB2 mode, difference is masked |
| 1366 | * in the CB driver. */ |
| 1367 | wr32(E1000_DCA_CTRL, 2); |
| 1368 | igb_setup_dca(adapter); |
| 1369 | } |
| 1370 | #endif |
| 1371 | |
Patrick Ohly | 38c845c | 2009-02-12 05:03:41 +0000 | [diff] [blame^] | 1372 | /* |
| 1373 | * Initialize hardware timer: we keep it running just in case |
| 1374 | * that some program needs it later on. |
| 1375 | */ |
| 1376 | memset(&adapter->cycles, 0, sizeof(adapter->cycles)); |
| 1377 | adapter->cycles.read = igb_read_clock; |
| 1378 | adapter->cycles.mask = CLOCKSOURCE_MASK(64); |
| 1379 | adapter->cycles.mult = 1; |
| 1380 | adapter->cycles.shift = IGB_TSYNC_SHIFT; |
| 1381 | wr32(E1000_TIMINCA, |
| 1382 | (1<<24) | |
| 1383 | IGB_TSYNC_CYCLE_TIME_IN_NANOSECONDS * IGB_TSYNC_SCALE); |
| 1384 | #if 0 |
| 1385 | /* |
| 1386 | * Avoid rollover while we initialize by resetting the time counter. |
| 1387 | */ |
| 1388 | wr32(E1000_SYSTIML, 0x00000000); |
| 1389 | wr32(E1000_SYSTIMH, 0x00000000); |
| 1390 | #else |
| 1391 | /* |
| 1392 | * Set registers so that rollover occurs soon to test this. |
| 1393 | */ |
| 1394 | wr32(E1000_SYSTIML, 0x00000000); |
| 1395 | wr32(E1000_SYSTIMH, 0xFF800000); |
| 1396 | #endif |
| 1397 | wrfl(); |
| 1398 | timecounter_init(&adapter->clock, |
| 1399 | &adapter->cycles, |
| 1400 | ktime_to_ns(ktime_get_real())); |
| 1401 | |
| 1402 | #ifdef DEBUG |
| 1403 | { |
| 1404 | char buffer[160]; |
| 1405 | printk(KERN_DEBUG |
| 1406 | "igb: %s: hw %p initialized timer\n", |
| 1407 | igb_get_time_str(adapter, buffer), |
| 1408 | &adapter->hw); |
| 1409 | } |
| 1410 | #endif |
| 1411 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1412 | dev_info(&pdev->dev, "Intel(R) Gigabit Ethernet Network Connection\n"); |
| 1413 | /* print bus type/speed/width info */ |
Johannes Berg | 7c510e4 | 2008-10-27 17:47:26 -0700 | [diff] [blame] | 1414 | dev_info(&pdev->dev, "%s: (PCIe:%s:%s) %pM\n", |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1415 | netdev->name, |
| 1416 | ((hw->bus.speed == e1000_bus_speed_2500) |
| 1417 | ? "2.5Gb/s" : "unknown"), |
| 1418 | ((hw->bus.width == e1000_bus_width_pcie_x4) |
| 1419 | ? "Width x4" : (hw->bus.width == e1000_bus_width_pcie_x1) |
| 1420 | ? "Width x1" : "unknown"), |
Johannes Berg | 7c510e4 | 2008-10-27 17:47:26 -0700 | [diff] [blame] | 1421 | netdev->dev_addr); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1422 | |
| 1423 | igb_read_part_num(hw, &part_num); |
| 1424 | dev_info(&pdev->dev, "%s: PBA No: %06x-%03x\n", netdev->name, |
| 1425 | (part_num >> 8), (part_num & 0xff)); |
| 1426 | |
| 1427 | dev_info(&pdev->dev, |
| 1428 | "Using %s interrupts. %d rx queue(s), %d tx queue(s)\n", |
| 1429 | adapter->msix_entries ? "MSI-X" : |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 1430 | (adapter->flags & IGB_FLAG_HAS_MSI) ? "MSI" : "legacy", |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1431 | adapter->num_rx_queues, adapter->num_tx_queues); |
| 1432 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1433 | return 0; |
| 1434 | |
| 1435 | err_register: |
| 1436 | igb_release_hw_control(adapter); |
| 1437 | err_eeprom: |
| 1438 | if (!igb_check_reset_block(hw)) |
Alexander Duyck | f5f4cf0 | 2008-11-21 21:30:24 -0800 | [diff] [blame] | 1439 | igb_reset_phy(hw); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1440 | |
| 1441 | if (hw->flash_address) |
| 1442 | iounmap(hw->flash_address); |
| 1443 | |
Alexander Duyck | a88f10e | 2008-07-08 15:13:38 -0700 | [diff] [blame] | 1444 | igb_free_queues(adapter); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1445 | err_sw_init: |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1446 | iounmap(hw->hw_addr); |
| 1447 | err_ioremap: |
| 1448 | free_netdev(netdev); |
| 1449 | err_alloc_etherdev: |
Alexander Duyck | aed5dec | 2009-02-06 23:16:04 +0000 | [diff] [blame] | 1450 | pci_release_selected_regions(pdev, pci_select_bars(pdev, |
| 1451 | IORESOURCE_MEM)); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1452 | err_pci_reg: |
| 1453 | err_dma: |
| 1454 | pci_disable_device(pdev); |
| 1455 | return err; |
| 1456 | } |
| 1457 | |
| 1458 | /** |
| 1459 | * igb_remove - Device Removal Routine |
| 1460 | * @pdev: PCI device information struct |
| 1461 | * |
| 1462 | * igb_remove is called by the PCI subsystem to alert the driver |
| 1463 | * that it should release a PCI device. The could be caused by a |
| 1464 | * Hot-Plug event, or because the driver is going to be removed from |
| 1465 | * memory. |
| 1466 | **/ |
| 1467 | static void __devexit igb_remove(struct pci_dev *pdev) |
| 1468 | { |
| 1469 | struct net_device *netdev = pci_get_drvdata(pdev); |
| 1470 | struct igb_adapter *adapter = netdev_priv(netdev); |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 1471 | struct e1000_hw *hw = &adapter->hw; |
Jeff Kirsher | ea943d4 | 2008-12-11 20:34:19 -0800 | [diff] [blame] | 1472 | int err; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1473 | |
| 1474 | /* flush_scheduled work may reschedule our watchdog task, so |
| 1475 | * explicitly disable watchdog tasks from being rescheduled */ |
| 1476 | set_bit(__IGB_DOWN, &adapter->state); |
| 1477 | del_timer_sync(&adapter->watchdog_timer); |
| 1478 | del_timer_sync(&adapter->phy_info_timer); |
| 1479 | |
| 1480 | flush_scheduled_work(); |
| 1481 | |
Jeff Kirsher | 421e02f | 2008-10-17 11:08:31 -0700 | [diff] [blame] | 1482 | #ifdef CONFIG_IGB_DCA |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 1483 | if (adapter->flags & IGB_FLAG_DCA_ENABLED) { |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 1484 | dev_info(&pdev->dev, "DCA disabled\n"); |
| 1485 | dca_remove_requester(&pdev->dev); |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 1486 | adapter->flags &= ~IGB_FLAG_DCA_ENABLED; |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 1487 | wr32(E1000_DCA_CTRL, 1); |
| 1488 | } |
| 1489 | #endif |
| 1490 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1491 | /* Release control of h/w to f/w. If f/w is AMT enabled, this |
| 1492 | * would have already happened in close and is redundant. */ |
| 1493 | igb_release_hw_control(adapter); |
| 1494 | |
| 1495 | unregister_netdev(netdev); |
| 1496 | |
Alexander Duyck | f5f4cf0 | 2008-11-21 21:30:24 -0800 | [diff] [blame] | 1497 | if (!igb_check_reset_block(&adapter->hw)) |
| 1498 | igb_reset_phy(&adapter->hw); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1499 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1500 | igb_reset_interrupt_capability(adapter); |
| 1501 | |
Alexander Duyck | a88f10e | 2008-07-08 15:13:38 -0700 | [diff] [blame] | 1502 | igb_free_queues(adapter); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1503 | |
Alexander Duyck | 28b0759 | 2009-02-06 23:20:31 +0000 | [diff] [blame] | 1504 | iounmap(hw->hw_addr); |
| 1505 | if (hw->flash_address) |
| 1506 | iounmap(hw->flash_address); |
Alexander Duyck | aed5dec | 2009-02-06 23:16:04 +0000 | [diff] [blame] | 1507 | pci_release_selected_regions(pdev, pci_select_bars(pdev, |
| 1508 | IORESOURCE_MEM)); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1509 | |
| 1510 | free_netdev(netdev); |
| 1511 | |
Jeff Kirsher | ea943d4 | 2008-12-11 20:34:19 -0800 | [diff] [blame] | 1512 | err = pci_disable_pcie_error_reporting(pdev); |
| 1513 | if (err) |
| 1514 | dev_err(&pdev->dev, |
| 1515 | "pci_disable_pcie_error_reporting failed 0x%x\n", err); |
Alexander Duyck | 40a914f | 2008-11-27 00:24:37 -0800 | [diff] [blame] | 1516 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1517 | pci_disable_device(pdev); |
| 1518 | } |
| 1519 | |
| 1520 | /** |
| 1521 | * igb_sw_init - Initialize general software structures (struct igb_adapter) |
| 1522 | * @adapter: board private structure to initialize |
| 1523 | * |
| 1524 | * igb_sw_init initializes the Adapter private data structure. |
| 1525 | * Fields are initialized based on PCI device information and |
| 1526 | * OS network device settings (MTU size). |
| 1527 | **/ |
| 1528 | static int __devinit igb_sw_init(struct igb_adapter *adapter) |
| 1529 | { |
| 1530 | struct e1000_hw *hw = &adapter->hw; |
| 1531 | struct net_device *netdev = adapter->netdev; |
| 1532 | struct pci_dev *pdev = adapter->pdev; |
| 1533 | |
| 1534 | pci_read_config_word(pdev, PCI_COMMAND, &hw->bus.pci_cmd_word); |
| 1535 | |
Alexander Duyck | 68fd991 | 2008-11-20 00:48:10 -0800 | [diff] [blame] | 1536 | adapter->tx_ring_count = IGB_DEFAULT_TXD; |
| 1537 | adapter->rx_ring_count = IGB_DEFAULT_RXD; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1538 | adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE; |
| 1539 | adapter->rx_ps_hdr_size = 0; /* disable packet split */ |
| 1540 | adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN; |
| 1541 | adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN; |
| 1542 | |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 1543 | /* This call may decrease the number of queues depending on |
| 1544 | * interrupt mode. */ |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1545 | igb_set_interrupt_capability(adapter); |
| 1546 | |
| 1547 | if (igb_alloc_queues(adapter)) { |
| 1548 | dev_err(&pdev->dev, "Unable to allocate memory for queues\n"); |
| 1549 | return -ENOMEM; |
| 1550 | } |
| 1551 | |
| 1552 | /* Explicitly disable IRQ since the NIC can be in any state. */ |
| 1553 | igb_irq_disable(adapter); |
| 1554 | |
| 1555 | set_bit(__IGB_DOWN, &adapter->state); |
| 1556 | return 0; |
| 1557 | } |
| 1558 | |
| 1559 | /** |
| 1560 | * igb_open - Called when a network interface is made active |
| 1561 | * @netdev: network interface device structure |
| 1562 | * |
| 1563 | * Returns 0 on success, negative value on failure |
| 1564 | * |
| 1565 | * The open entry point is called when a network interface is made |
| 1566 | * active by the system (IFF_UP). At this point all resources needed |
| 1567 | * for transmit and receive operations are allocated, the interrupt |
| 1568 | * handler is registered with the OS, the watchdog timer is started, |
| 1569 | * and the stack is notified that the interface is ready. |
| 1570 | **/ |
| 1571 | static int igb_open(struct net_device *netdev) |
| 1572 | { |
| 1573 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 1574 | struct e1000_hw *hw = &adapter->hw; |
| 1575 | int err; |
| 1576 | int i; |
| 1577 | |
| 1578 | /* disallow open during test */ |
| 1579 | if (test_bit(__IGB_TESTING, &adapter->state)) |
| 1580 | return -EBUSY; |
| 1581 | |
| 1582 | /* allocate transmit descriptors */ |
| 1583 | err = igb_setup_all_tx_resources(adapter); |
| 1584 | if (err) |
| 1585 | goto err_setup_tx; |
| 1586 | |
| 1587 | /* allocate receive descriptors */ |
| 1588 | err = igb_setup_all_rx_resources(adapter); |
| 1589 | if (err) |
| 1590 | goto err_setup_rx; |
| 1591 | |
| 1592 | /* e1000_power_up_phy(adapter); */ |
| 1593 | |
| 1594 | adapter->mng_vlan_id = IGB_MNG_VLAN_NONE; |
| 1595 | if ((adapter->hw.mng_cookie.status & |
| 1596 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN)) |
| 1597 | igb_update_mng_vlan(adapter); |
| 1598 | |
| 1599 | /* before we allocate an interrupt, we must be ready to handle it. |
| 1600 | * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt |
| 1601 | * as soon as we call pci_request_irq, so we have to setup our |
| 1602 | * clean_rx handler before we do so. */ |
| 1603 | igb_configure(adapter); |
| 1604 | |
| 1605 | err = igb_request_irq(adapter); |
| 1606 | if (err) |
| 1607 | goto err_req_irq; |
| 1608 | |
| 1609 | /* From here on the code is the same as igb_up() */ |
| 1610 | clear_bit(__IGB_DOWN, &adapter->state); |
| 1611 | |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 1612 | for (i = 0; i < adapter->num_rx_queues; i++) |
| 1613 | napi_enable(&adapter->rx_ring[i].napi); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1614 | |
| 1615 | /* Clear any pending interrupts. */ |
| 1616 | rd32(E1000_ICR); |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 1617 | |
| 1618 | igb_irq_enable(adapter); |
| 1619 | |
Jeff Kirsher | d55b53f | 2008-07-18 04:33:03 -0700 | [diff] [blame] | 1620 | netif_tx_start_all_queues(netdev); |
| 1621 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1622 | /* Fire a link status change interrupt to start the watchdog. */ |
| 1623 | wr32(E1000_ICS, E1000_ICS_LSC); |
| 1624 | |
| 1625 | return 0; |
| 1626 | |
| 1627 | err_req_irq: |
| 1628 | igb_release_hw_control(adapter); |
| 1629 | /* e1000_power_down_phy(adapter); */ |
| 1630 | igb_free_all_rx_resources(adapter); |
| 1631 | err_setup_rx: |
| 1632 | igb_free_all_tx_resources(adapter); |
| 1633 | err_setup_tx: |
| 1634 | igb_reset(adapter); |
| 1635 | |
| 1636 | return err; |
| 1637 | } |
| 1638 | |
| 1639 | /** |
| 1640 | * igb_close - Disables a network interface |
| 1641 | * @netdev: network interface device structure |
| 1642 | * |
| 1643 | * Returns 0, this is not allowed to fail |
| 1644 | * |
| 1645 | * The close entry point is called when an interface is de-activated |
| 1646 | * by the OS. The hardware is still under the driver's control, but |
| 1647 | * needs to be disabled. A global MAC reset is issued to stop the |
| 1648 | * hardware, and all transmit and receive resources are freed. |
| 1649 | **/ |
| 1650 | static int igb_close(struct net_device *netdev) |
| 1651 | { |
| 1652 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 1653 | |
| 1654 | WARN_ON(test_bit(__IGB_RESETTING, &adapter->state)); |
| 1655 | igb_down(adapter); |
| 1656 | |
| 1657 | igb_free_irq(adapter); |
| 1658 | |
| 1659 | igb_free_all_tx_resources(adapter); |
| 1660 | igb_free_all_rx_resources(adapter); |
| 1661 | |
| 1662 | /* kill manageability vlan ID if supported, but not if a vlan with |
| 1663 | * the same ID is registered on the host OS (let 8021q kill it) */ |
| 1664 | if ((adapter->hw.mng_cookie.status & |
| 1665 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN) && |
| 1666 | !(adapter->vlgrp && |
| 1667 | vlan_group_get_device(adapter->vlgrp, adapter->mng_vlan_id))) |
| 1668 | igb_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); |
| 1669 | |
| 1670 | return 0; |
| 1671 | } |
| 1672 | |
| 1673 | /** |
| 1674 | * igb_setup_tx_resources - allocate Tx resources (Descriptors) |
| 1675 | * @adapter: board private structure |
| 1676 | * @tx_ring: tx descriptor ring (for a specific queue) to setup |
| 1677 | * |
| 1678 | * Return 0 on success, negative on failure |
| 1679 | **/ |
| 1680 | |
| 1681 | int igb_setup_tx_resources(struct igb_adapter *adapter, |
| 1682 | struct igb_ring *tx_ring) |
| 1683 | { |
| 1684 | struct pci_dev *pdev = adapter->pdev; |
| 1685 | int size; |
| 1686 | |
| 1687 | size = sizeof(struct igb_buffer) * tx_ring->count; |
| 1688 | tx_ring->buffer_info = vmalloc(size); |
| 1689 | if (!tx_ring->buffer_info) |
| 1690 | goto err; |
| 1691 | memset(tx_ring->buffer_info, 0, size); |
| 1692 | |
| 1693 | /* round up to nearest 4K */ |
Alexander Duyck | 0e014cb | 2008-12-26 01:33:18 -0800 | [diff] [blame] | 1694 | tx_ring->size = tx_ring->count * sizeof(struct e1000_tx_desc); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1695 | tx_ring->size = ALIGN(tx_ring->size, 4096); |
| 1696 | |
| 1697 | tx_ring->desc = pci_alloc_consistent(pdev, tx_ring->size, |
| 1698 | &tx_ring->dma); |
| 1699 | |
| 1700 | if (!tx_ring->desc) |
| 1701 | goto err; |
| 1702 | |
| 1703 | tx_ring->adapter = adapter; |
| 1704 | tx_ring->next_to_use = 0; |
| 1705 | tx_ring->next_to_clean = 0; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1706 | return 0; |
| 1707 | |
| 1708 | err: |
| 1709 | vfree(tx_ring->buffer_info); |
| 1710 | dev_err(&adapter->pdev->dev, |
| 1711 | "Unable to allocate memory for the transmit descriptor ring\n"); |
| 1712 | return -ENOMEM; |
| 1713 | } |
| 1714 | |
| 1715 | /** |
| 1716 | * igb_setup_all_tx_resources - wrapper to allocate Tx resources |
| 1717 | * (Descriptors) for all queues |
| 1718 | * @adapter: board private structure |
| 1719 | * |
| 1720 | * Return 0 on success, negative on failure |
| 1721 | **/ |
| 1722 | static int igb_setup_all_tx_resources(struct igb_adapter *adapter) |
| 1723 | { |
| 1724 | int i, err = 0; |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 1725 | int r_idx; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1726 | |
| 1727 | for (i = 0; i < adapter->num_tx_queues; i++) { |
| 1728 | err = igb_setup_tx_resources(adapter, &adapter->tx_ring[i]); |
| 1729 | if (err) { |
| 1730 | dev_err(&adapter->pdev->dev, |
| 1731 | "Allocation for Tx Queue %u failed\n", i); |
| 1732 | for (i--; i >= 0; i--) |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 1733 | igb_free_tx_resources(&adapter->tx_ring[i]); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1734 | break; |
| 1735 | } |
| 1736 | } |
| 1737 | |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 1738 | for (i = 0; i < IGB_MAX_TX_QUEUES; i++) { |
| 1739 | r_idx = i % adapter->num_tx_queues; |
| 1740 | adapter->multi_tx_table[i] = &adapter->tx_ring[r_idx]; |
Alexander Duyck | eebbbdb | 2009-02-06 23:19:29 +0000 | [diff] [blame] | 1741 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1742 | return err; |
| 1743 | } |
| 1744 | |
| 1745 | /** |
| 1746 | * igb_configure_tx - Configure transmit Unit after Reset |
| 1747 | * @adapter: board private structure |
| 1748 | * |
| 1749 | * Configure the Tx unit of the MAC after a reset. |
| 1750 | **/ |
| 1751 | static void igb_configure_tx(struct igb_adapter *adapter) |
| 1752 | { |
Alexander Duyck | 0e014cb | 2008-12-26 01:33:18 -0800 | [diff] [blame] | 1753 | u64 tdba; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1754 | struct e1000_hw *hw = &adapter->hw; |
| 1755 | u32 tctl; |
| 1756 | u32 txdctl, txctrl; |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 1757 | int i, j; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1758 | |
| 1759 | for (i = 0; i < adapter->num_tx_queues; i++) { |
| 1760 | struct igb_ring *ring = &(adapter->tx_ring[i]); |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 1761 | j = ring->reg_idx; |
| 1762 | wr32(E1000_TDLEN(j), |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1763 | ring->count * sizeof(struct e1000_tx_desc)); |
| 1764 | tdba = ring->dma; |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 1765 | wr32(E1000_TDBAL(j), |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1766 | tdba & 0x00000000ffffffffULL); |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 1767 | wr32(E1000_TDBAH(j), tdba >> 32); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1768 | |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 1769 | ring->head = E1000_TDH(j); |
| 1770 | ring->tail = E1000_TDT(j); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1771 | writel(0, hw->hw_addr + ring->tail); |
| 1772 | writel(0, hw->hw_addr + ring->head); |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 1773 | txdctl = rd32(E1000_TXDCTL(j)); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1774 | txdctl |= E1000_TXDCTL_QUEUE_ENABLE; |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 1775 | wr32(E1000_TXDCTL(j), txdctl); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1776 | |
| 1777 | /* Turn off Relaxed Ordering on head write-backs. The |
| 1778 | * writebacks MUST be delivered in order or it will |
| 1779 | * completely screw up our bookeeping. |
| 1780 | */ |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 1781 | txctrl = rd32(E1000_DCA_TXCTRL(j)); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1782 | txctrl &= ~E1000_DCA_TXCTRL_TX_WB_RO_EN; |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 1783 | wr32(E1000_DCA_TXCTRL(j), txctrl); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1784 | } |
| 1785 | |
| 1786 | |
| 1787 | |
| 1788 | /* Use the default values for the Tx Inter Packet Gap (IPG) timer */ |
| 1789 | |
| 1790 | /* Program the Transmit Control Register */ |
| 1791 | |
| 1792 | tctl = rd32(E1000_TCTL); |
| 1793 | tctl &= ~E1000_TCTL_CT; |
| 1794 | tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC | |
| 1795 | (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT); |
| 1796 | |
| 1797 | igb_config_collision_dist(hw); |
| 1798 | |
| 1799 | /* Setup Transmit Descriptor Settings for eop descriptor */ |
| 1800 | adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_RS; |
| 1801 | |
| 1802 | /* Enable transmits */ |
| 1803 | tctl |= E1000_TCTL_EN; |
| 1804 | |
| 1805 | wr32(E1000_TCTL, tctl); |
| 1806 | } |
| 1807 | |
| 1808 | /** |
| 1809 | * igb_setup_rx_resources - allocate Rx resources (Descriptors) |
| 1810 | * @adapter: board private structure |
| 1811 | * @rx_ring: rx descriptor ring (for a specific queue) to setup |
| 1812 | * |
| 1813 | * Returns 0 on success, negative on failure |
| 1814 | **/ |
| 1815 | |
| 1816 | int igb_setup_rx_resources(struct igb_adapter *adapter, |
| 1817 | struct igb_ring *rx_ring) |
| 1818 | { |
| 1819 | struct pci_dev *pdev = adapter->pdev; |
| 1820 | int size, desc_len; |
| 1821 | |
| 1822 | size = sizeof(struct igb_buffer) * rx_ring->count; |
| 1823 | rx_ring->buffer_info = vmalloc(size); |
| 1824 | if (!rx_ring->buffer_info) |
| 1825 | goto err; |
| 1826 | memset(rx_ring->buffer_info, 0, size); |
| 1827 | |
| 1828 | desc_len = sizeof(union e1000_adv_rx_desc); |
| 1829 | |
| 1830 | /* Round up to nearest 4K */ |
| 1831 | rx_ring->size = rx_ring->count * desc_len; |
| 1832 | rx_ring->size = ALIGN(rx_ring->size, 4096); |
| 1833 | |
| 1834 | rx_ring->desc = pci_alloc_consistent(pdev, rx_ring->size, |
| 1835 | &rx_ring->dma); |
| 1836 | |
| 1837 | if (!rx_ring->desc) |
| 1838 | goto err; |
| 1839 | |
| 1840 | rx_ring->next_to_clean = 0; |
| 1841 | rx_ring->next_to_use = 0; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1842 | |
| 1843 | rx_ring->adapter = adapter; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1844 | |
| 1845 | return 0; |
| 1846 | |
| 1847 | err: |
| 1848 | vfree(rx_ring->buffer_info); |
| 1849 | dev_err(&adapter->pdev->dev, "Unable to allocate memory for " |
| 1850 | "the receive descriptor ring\n"); |
| 1851 | return -ENOMEM; |
| 1852 | } |
| 1853 | |
| 1854 | /** |
| 1855 | * igb_setup_all_rx_resources - wrapper to allocate Rx resources |
| 1856 | * (Descriptors) for all queues |
| 1857 | * @adapter: board private structure |
| 1858 | * |
| 1859 | * Return 0 on success, negative on failure |
| 1860 | **/ |
| 1861 | static int igb_setup_all_rx_resources(struct igb_adapter *adapter) |
| 1862 | { |
| 1863 | int i, err = 0; |
| 1864 | |
| 1865 | for (i = 0; i < adapter->num_rx_queues; i++) { |
| 1866 | err = igb_setup_rx_resources(adapter, &adapter->rx_ring[i]); |
| 1867 | if (err) { |
| 1868 | dev_err(&adapter->pdev->dev, |
| 1869 | "Allocation for Rx Queue %u failed\n", i); |
| 1870 | for (i--; i >= 0; i--) |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 1871 | igb_free_rx_resources(&adapter->rx_ring[i]); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1872 | break; |
| 1873 | } |
| 1874 | } |
| 1875 | |
| 1876 | return err; |
| 1877 | } |
| 1878 | |
| 1879 | /** |
| 1880 | * igb_setup_rctl - configure the receive control registers |
| 1881 | * @adapter: Board private structure |
| 1882 | **/ |
| 1883 | static void igb_setup_rctl(struct igb_adapter *adapter) |
| 1884 | { |
| 1885 | struct e1000_hw *hw = &adapter->hw; |
| 1886 | u32 rctl; |
| 1887 | u32 srrctl = 0; |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 1888 | int i, j; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1889 | |
| 1890 | rctl = rd32(E1000_RCTL); |
| 1891 | |
| 1892 | rctl &= ~(3 << E1000_RCTL_MO_SHIFT); |
Alexander Duyck | 69d728b | 2008-11-25 01:04:03 -0800 | [diff] [blame] | 1893 | rctl &= ~(E1000_RCTL_LBM_TCVR | E1000_RCTL_LBM_MAC); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1894 | |
Alexander Duyck | 69d728b | 2008-11-25 01:04:03 -0800 | [diff] [blame] | 1895 | rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | E1000_RCTL_RDMTS_HALF | |
Alexander Duyck | 28b0759 | 2009-02-06 23:20:31 +0000 | [diff] [blame] | 1896 | (hw->mac.mc_filter_type << E1000_RCTL_MO_SHIFT); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1897 | |
Auke Kok | 87cb7e8 | 2008-07-08 15:08:29 -0700 | [diff] [blame] | 1898 | /* |
| 1899 | * enable stripping of CRC. It's unlikely this will break BMC |
| 1900 | * redirection as it did with e1000. Newer features require |
| 1901 | * that the HW strips the CRC. |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1902 | */ |
Auke Kok | 87cb7e8 | 2008-07-08 15:08:29 -0700 | [diff] [blame] | 1903 | rctl |= E1000_RCTL_SECRC; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1904 | |
Alexander Duyck | 9b07f3d3 | 2008-11-25 01:03:26 -0800 | [diff] [blame] | 1905 | /* |
Alexander Duyck | ec54d7d | 2009-01-31 00:52:57 -0800 | [diff] [blame] | 1906 | * disable store bad packets and clear size bits. |
Alexander Duyck | 9b07f3d3 | 2008-11-25 01:03:26 -0800 | [diff] [blame] | 1907 | */ |
Alexander Duyck | ec54d7d | 2009-01-31 00:52:57 -0800 | [diff] [blame] | 1908 | rctl &= ~(E1000_RCTL_SBP | E1000_RCTL_SZ_256); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1909 | |
Alexander Duyck | ec54d7d | 2009-01-31 00:52:57 -0800 | [diff] [blame] | 1910 | /* enable LPE when to prevent packets larger than max_frame_size */ |
Alexander Duyck | 9b07f3d3 | 2008-11-25 01:03:26 -0800 | [diff] [blame] | 1911 | rctl |= E1000_RCTL_LPE; |
Alexander Duyck | b4557be | 2008-12-10 01:08:59 -0800 | [diff] [blame] | 1912 | |
| 1913 | /* Setup buffer sizes */ |
| 1914 | switch (adapter->rx_buffer_len) { |
| 1915 | case IGB_RXBUFFER_256: |
| 1916 | rctl |= E1000_RCTL_SZ_256; |
| 1917 | break; |
| 1918 | case IGB_RXBUFFER_512: |
| 1919 | rctl |= E1000_RCTL_SZ_512; |
| 1920 | break; |
| 1921 | default: |
| 1922 | srrctl = ALIGN(adapter->rx_buffer_len, 1024) |
| 1923 | >> E1000_SRRCTL_BSIZEPKT_SHIFT; |
| 1924 | break; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1925 | } |
| 1926 | |
| 1927 | /* 82575 and greater support packet-split where the protocol |
| 1928 | * header is placed in skb->data and the packet data is |
| 1929 | * placed in pages hanging off of skb_shinfo(skb)->nr_frags. |
| 1930 | * In the case of a non-split, skb->data is linearly filled, |
| 1931 | * followed by the page buffers. Therefore, skb->data is |
| 1932 | * sized to hold the largest protocol header. |
| 1933 | */ |
| 1934 | /* allocations using alloc_page take too long for regular MTU |
| 1935 | * so only enable packet split for jumbo frames */ |
Alexander Duyck | ec54d7d | 2009-01-31 00:52:57 -0800 | [diff] [blame] | 1936 | if (adapter->netdev->mtu > ETH_DATA_LEN) { |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1937 | adapter->rx_ps_hdr_size = IGB_RXBUFFER_128; |
Alexander Duyck | bf36c1a | 2008-07-08 15:11:40 -0700 | [diff] [blame] | 1938 | srrctl |= adapter->rx_ps_hdr_size << |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1939 | E1000_SRRCTL_BSIZEHDRSIZE_SHIFT; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1940 | srrctl |= E1000_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS; |
| 1941 | } else { |
| 1942 | adapter->rx_ps_hdr_size = 0; |
| 1943 | srrctl |= E1000_SRRCTL_DESCTYPE_ADV_ONEBUF; |
| 1944 | } |
| 1945 | |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 1946 | for (i = 0; i < adapter->num_rx_queues; i++) { |
| 1947 | j = adapter->rx_ring[i].reg_idx; |
| 1948 | wr32(E1000_SRRCTL(j), srrctl); |
| 1949 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1950 | |
| 1951 | wr32(E1000_RCTL, rctl); |
| 1952 | } |
| 1953 | |
| 1954 | /** |
| 1955 | * igb_configure_rx - Configure receive Unit after Reset |
| 1956 | * @adapter: board private structure |
| 1957 | * |
| 1958 | * Configure the Rx unit of the MAC after a reset. |
| 1959 | **/ |
| 1960 | static void igb_configure_rx(struct igb_adapter *adapter) |
| 1961 | { |
| 1962 | u64 rdba; |
| 1963 | struct e1000_hw *hw = &adapter->hw; |
| 1964 | u32 rctl, rxcsum; |
| 1965 | u32 rxdctl; |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 1966 | int i, j; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1967 | |
| 1968 | /* disable receives while setting up the descriptors */ |
| 1969 | rctl = rd32(E1000_RCTL); |
| 1970 | wr32(E1000_RCTL, rctl & ~E1000_RCTL_EN); |
| 1971 | wrfl(); |
| 1972 | mdelay(10); |
| 1973 | |
| 1974 | if (adapter->itr_setting > 3) |
Alexander Duyck | 6eb5a7f | 2008-07-08 15:14:44 -0700 | [diff] [blame] | 1975 | wr32(E1000_ITR, adapter->itr); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1976 | |
| 1977 | /* Setup the HW Rx Head and Tail Descriptor Pointers and |
| 1978 | * the Base and Length of the Rx Descriptor Ring */ |
| 1979 | for (i = 0; i < adapter->num_rx_queues; i++) { |
| 1980 | struct igb_ring *ring = &(adapter->rx_ring[i]); |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 1981 | j = ring->reg_idx; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1982 | rdba = ring->dma; |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 1983 | wr32(E1000_RDBAL(j), |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1984 | rdba & 0x00000000ffffffffULL); |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 1985 | wr32(E1000_RDBAH(j), rdba >> 32); |
| 1986 | wr32(E1000_RDLEN(j), |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1987 | ring->count * sizeof(union e1000_adv_rx_desc)); |
| 1988 | |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 1989 | ring->head = E1000_RDH(j); |
| 1990 | ring->tail = E1000_RDT(j); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1991 | writel(0, hw->hw_addr + ring->tail); |
| 1992 | writel(0, hw->hw_addr + ring->head); |
| 1993 | |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 1994 | rxdctl = rd32(E1000_RXDCTL(j)); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1995 | rxdctl |= E1000_RXDCTL_QUEUE_ENABLE; |
| 1996 | rxdctl &= 0xFFF00000; |
| 1997 | rxdctl |= IGB_RX_PTHRESH; |
| 1998 | rxdctl |= IGB_RX_HTHRESH << 8; |
| 1999 | rxdctl |= IGB_RX_WTHRESH << 16; |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 2000 | wr32(E1000_RXDCTL(j), rxdctl); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2001 | } |
| 2002 | |
| 2003 | if (adapter->num_rx_queues > 1) { |
| 2004 | u32 random[10]; |
| 2005 | u32 mrqc; |
| 2006 | u32 j, shift; |
| 2007 | union e1000_reta { |
| 2008 | u32 dword; |
| 2009 | u8 bytes[4]; |
| 2010 | } reta; |
| 2011 | |
| 2012 | get_random_bytes(&random[0], 40); |
| 2013 | |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 2014 | if (hw->mac.type >= e1000_82576) |
| 2015 | shift = 0; |
| 2016 | else |
| 2017 | shift = 6; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2018 | for (j = 0; j < (32 * 4); j++) { |
| 2019 | reta.bytes[j & 3] = |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 2020 | adapter->rx_ring[(j % adapter->num_rx_queues)].reg_idx << shift; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2021 | if ((j & 3) == 3) |
| 2022 | writel(reta.dword, |
| 2023 | hw->hw_addr + E1000_RETA(0) + (j & ~3)); |
| 2024 | } |
| 2025 | mrqc = E1000_MRQC_ENABLE_RSS_4Q; |
| 2026 | |
| 2027 | /* Fill out hash function seeds */ |
| 2028 | for (j = 0; j < 10; j++) |
| 2029 | array_wr32(E1000_RSSRK(0), j, random[j]); |
| 2030 | |
| 2031 | mrqc |= (E1000_MRQC_RSS_FIELD_IPV4 | |
| 2032 | E1000_MRQC_RSS_FIELD_IPV4_TCP); |
| 2033 | mrqc |= (E1000_MRQC_RSS_FIELD_IPV6 | |
| 2034 | E1000_MRQC_RSS_FIELD_IPV6_TCP); |
| 2035 | mrqc |= (E1000_MRQC_RSS_FIELD_IPV4_UDP | |
| 2036 | E1000_MRQC_RSS_FIELD_IPV6_UDP); |
| 2037 | mrqc |= (E1000_MRQC_RSS_FIELD_IPV6_UDP_EX | |
| 2038 | E1000_MRQC_RSS_FIELD_IPV6_TCP_EX); |
| 2039 | |
| 2040 | |
| 2041 | wr32(E1000_MRQC, mrqc); |
| 2042 | |
| 2043 | /* Multiqueue and raw packet checksumming are mutually |
| 2044 | * exclusive. Note that this not the same as TCP/IP |
| 2045 | * checksumming, which works fine. */ |
| 2046 | rxcsum = rd32(E1000_RXCSUM); |
| 2047 | rxcsum |= E1000_RXCSUM_PCSD; |
| 2048 | wr32(E1000_RXCSUM, rxcsum); |
| 2049 | } else { |
| 2050 | /* Enable Receive Checksum Offload for TCP and UDP */ |
| 2051 | rxcsum = rd32(E1000_RXCSUM); |
| 2052 | if (adapter->rx_csum) { |
| 2053 | rxcsum |= E1000_RXCSUM_TUOFL; |
| 2054 | |
| 2055 | /* Enable IPv4 payload checksum for UDP fragments |
| 2056 | * Must be used in conjunction with packet-split. */ |
| 2057 | if (adapter->rx_ps_hdr_size) |
| 2058 | rxcsum |= E1000_RXCSUM_IPPCSE; |
| 2059 | } else { |
| 2060 | rxcsum &= ~E1000_RXCSUM_TUOFL; |
| 2061 | /* don't need to clear IPPCSE as it defaults to 0 */ |
| 2062 | } |
| 2063 | wr32(E1000_RXCSUM, rxcsum); |
| 2064 | } |
| 2065 | |
| 2066 | if (adapter->vlgrp) |
| 2067 | wr32(E1000_RLPML, |
| 2068 | adapter->max_frame_size + VLAN_TAG_SIZE); |
| 2069 | else |
| 2070 | wr32(E1000_RLPML, adapter->max_frame_size); |
| 2071 | |
| 2072 | /* Enable Receives */ |
| 2073 | wr32(E1000_RCTL, rctl); |
| 2074 | } |
| 2075 | |
| 2076 | /** |
| 2077 | * igb_free_tx_resources - Free Tx Resources per Queue |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2078 | * @tx_ring: Tx descriptor ring for a specific queue |
| 2079 | * |
| 2080 | * Free all transmit software resources |
| 2081 | **/ |
Alexander Duyck | 68fd991 | 2008-11-20 00:48:10 -0800 | [diff] [blame] | 2082 | void igb_free_tx_resources(struct igb_ring *tx_ring) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2083 | { |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 2084 | struct pci_dev *pdev = tx_ring->adapter->pdev; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2085 | |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 2086 | igb_clean_tx_ring(tx_ring); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2087 | |
| 2088 | vfree(tx_ring->buffer_info); |
| 2089 | tx_ring->buffer_info = NULL; |
| 2090 | |
| 2091 | pci_free_consistent(pdev, tx_ring->size, tx_ring->desc, tx_ring->dma); |
| 2092 | |
| 2093 | tx_ring->desc = NULL; |
| 2094 | } |
| 2095 | |
| 2096 | /** |
| 2097 | * igb_free_all_tx_resources - Free Tx Resources for All Queues |
| 2098 | * @adapter: board private structure |
| 2099 | * |
| 2100 | * Free all transmit software resources |
| 2101 | **/ |
| 2102 | static void igb_free_all_tx_resources(struct igb_adapter *adapter) |
| 2103 | { |
| 2104 | int i; |
| 2105 | |
| 2106 | for (i = 0; i < adapter->num_tx_queues; i++) |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 2107 | igb_free_tx_resources(&adapter->tx_ring[i]); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2108 | } |
| 2109 | |
| 2110 | static void igb_unmap_and_free_tx_resource(struct igb_adapter *adapter, |
| 2111 | struct igb_buffer *buffer_info) |
| 2112 | { |
| 2113 | if (buffer_info->dma) { |
| 2114 | pci_unmap_page(adapter->pdev, |
| 2115 | buffer_info->dma, |
| 2116 | buffer_info->length, |
| 2117 | PCI_DMA_TODEVICE); |
| 2118 | buffer_info->dma = 0; |
| 2119 | } |
| 2120 | if (buffer_info->skb) { |
| 2121 | dev_kfree_skb_any(buffer_info->skb); |
| 2122 | buffer_info->skb = NULL; |
| 2123 | } |
| 2124 | buffer_info->time_stamp = 0; |
| 2125 | /* buffer_info must be completely set up in the transmit path */ |
| 2126 | } |
| 2127 | |
| 2128 | /** |
| 2129 | * igb_clean_tx_ring - Free Tx Buffers |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2130 | * @tx_ring: ring to be cleaned |
| 2131 | **/ |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 2132 | static void igb_clean_tx_ring(struct igb_ring *tx_ring) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2133 | { |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 2134 | struct igb_adapter *adapter = tx_ring->adapter; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2135 | struct igb_buffer *buffer_info; |
| 2136 | unsigned long size; |
| 2137 | unsigned int i; |
| 2138 | |
| 2139 | if (!tx_ring->buffer_info) |
| 2140 | return; |
| 2141 | /* Free all the Tx ring sk_buffs */ |
| 2142 | |
| 2143 | for (i = 0; i < tx_ring->count; i++) { |
| 2144 | buffer_info = &tx_ring->buffer_info[i]; |
| 2145 | igb_unmap_and_free_tx_resource(adapter, buffer_info); |
| 2146 | } |
| 2147 | |
| 2148 | size = sizeof(struct igb_buffer) * tx_ring->count; |
| 2149 | memset(tx_ring->buffer_info, 0, size); |
| 2150 | |
| 2151 | /* Zero out the descriptor ring */ |
| 2152 | |
| 2153 | memset(tx_ring->desc, 0, tx_ring->size); |
| 2154 | |
| 2155 | tx_ring->next_to_use = 0; |
| 2156 | tx_ring->next_to_clean = 0; |
| 2157 | |
| 2158 | writel(0, adapter->hw.hw_addr + tx_ring->head); |
| 2159 | writel(0, adapter->hw.hw_addr + tx_ring->tail); |
| 2160 | } |
| 2161 | |
| 2162 | /** |
| 2163 | * igb_clean_all_tx_rings - Free Tx Buffers for all queues |
| 2164 | * @adapter: board private structure |
| 2165 | **/ |
| 2166 | static void igb_clean_all_tx_rings(struct igb_adapter *adapter) |
| 2167 | { |
| 2168 | int i; |
| 2169 | |
| 2170 | for (i = 0; i < adapter->num_tx_queues; i++) |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 2171 | igb_clean_tx_ring(&adapter->tx_ring[i]); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2172 | } |
| 2173 | |
| 2174 | /** |
| 2175 | * igb_free_rx_resources - Free Rx Resources |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2176 | * @rx_ring: ring to clean the resources from |
| 2177 | * |
| 2178 | * Free all receive software resources |
| 2179 | **/ |
Alexander Duyck | 68fd991 | 2008-11-20 00:48:10 -0800 | [diff] [blame] | 2180 | void igb_free_rx_resources(struct igb_ring *rx_ring) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2181 | { |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 2182 | struct pci_dev *pdev = rx_ring->adapter->pdev; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2183 | |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 2184 | igb_clean_rx_ring(rx_ring); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2185 | |
| 2186 | vfree(rx_ring->buffer_info); |
| 2187 | rx_ring->buffer_info = NULL; |
| 2188 | |
| 2189 | pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma); |
| 2190 | |
| 2191 | rx_ring->desc = NULL; |
| 2192 | } |
| 2193 | |
| 2194 | /** |
| 2195 | * igb_free_all_rx_resources - Free Rx Resources for All Queues |
| 2196 | * @adapter: board private structure |
| 2197 | * |
| 2198 | * Free all receive software resources |
| 2199 | **/ |
| 2200 | static void igb_free_all_rx_resources(struct igb_adapter *adapter) |
| 2201 | { |
| 2202 | int i; |
| 2203 | |
| 2204 | for (i = 0; i < adapter->num_rx_queues; i++) |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 2205 | igb_free_rx_resources(&adapter->rx_ring[i]); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2206 | } |
| 2207 | |
| 2208 | /** |
| 2209 | * igb_clean_rx_ring - Free Rx Buffers per Queue |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2210 | * @rx_ring: ring to free buffers from |
| 2211 | **/ |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 2212 | static void igb_clean_rx_ring(struct igb_ring *rx_ring) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2213 | { |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 2214 | struct igb_adapter *adapter = rx_ring->adapter; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2215 | struct igb_buffer *buffer_info; |
| 2216 | struct pci_dev *pdev = adapter->pdev; |
| 2217 | unsigned long size; |
| 2218 | unsigned int i; |
| 2219 | |
| 2220 | if (!rx_ring->buffer_info) |
| 2221 | return; |
| 2222 | /* Free all the Rx ring sk_buffs */ |
| 2223 | for (i = 0; i < rx_ring->count; i++) { |
| 2224 | buffer_info = &rx_ring->buffer_info[i]; |
| 2225 | if (buffer_info->dma) { |
| 2226 | if (adapter->rx_ps_hdr_size) |
| 2227 | pci_unmap_single(pdev, buffer_info->dma, |
| 2228 | adapter->rx_ps_hdr_size, |
| 2229 | PCI_DMA_FROMDEVICE); |
| 2230 | else |
| 2231 | pci_unmap_single(pdev, buffer_info->dma, |
| 2232 | adapter->rx_buffer_len, |
| 2233 | PCI_DMA_FROMDEVICE); |
| 2234 | buffer_info->dma = 0; |
| 2235 | } |
| 2236 | |
| 2237 | if (buffer_info->skb) { |
| 2238 | dev_kfree_skb(buffer_info->skb); |
| 2239 | buffer_info->skb = NULL; |
| 2240 | } |
| 2241 | if (buffer_info->page) { |
Alexander Duyck | bf36c1a | 2008-07-08 15:11:40 -0700 | [diff] [blame] | 2242 | if (buffer_info->page_dma) |
| 2243 | pci_unmap_page(pdev, buffer_info->page_dma, |
| 2244 | PAGE_SIZE / 2, |
| 2245 | PCI_DMA_FROMDEVICE); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2246 | put_page(buffer_info->page); |
| 2247 | buffer_info->page = NULL; |
| 2248 | buffer_info->page_dma = 0; |
Alexander Duyck | bf36c1a | 2008-07-08 15:11:40 -0700 | [diff] [blame] | 2249 | buffer_info->page_offset = 0; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2250 | } |
| 2251 | } |
| 2252 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2253 | size = sizeof(struct igb_buffer) * rx_ring->count; |
| 2254 | memset(rx_ring->buffer_info, 0, size); |
| 2255 | |
| 2256 | /* Zero out the descriptor ring */ |
| 2257 | memset(rx_ring->desc, 0, rx_ring->size); |
| 2258 | |
| 2259 | rx_ring->next_to_clean = 0; |
| 2260 | rx_ring->next_to_use = 0; |
| 2261 | |
| 2262 | writel(0, adapter->hw.hw_addr + rx_ring->head); |
| 2263 | writel(0, adapter->hw.hw_addr + rx_ring->tail); |
| 2264 | } |
| 2265 | |
| 2266 | /** |
| 2267 | * igb_clean_all_rx_rings - Free Rx Buffers for all queues |
| 2268 | * @adapter: board private structure |
| 2269 | **/ |
| 2270 | static void igb_clean_all_rx_rings(struct igb_adapter *adapter) |
| 2271 | { |
| 2272 | int i; |
| 2273 | |
| 2274 | for (i = 0; i < adapter->num_rx_queues; i++) |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 2275 | igb_clean_rx_ring(&adapter->rx_ring[i]); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2276 | } |
| 2277 | |
| 2278 | /** |
| 2279 | * igb_set_mac - Change the Ethernet Address of the NIC |
| 2280 | * @netdev: network interface device structure |
| 2281 | * @p: pointer to an address structure |
| 2282 | * |
| 2283 | * Returns 0 on success, negative on failure |
| 2284 | **/ |
| 2285 | static int igb_set_mac(struct net_device *netdev, void *p) |
| 2286 | { |
| 2287 | struct igb_adapter *adapter = netdev_priv(netdev); |
Alexander Duyck | 28b0759 | 2009-02-06 23:20:31 +0000 | [diff] [blame] | 2288 | struct e1000_hw *hw = &adapter->hw; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2289 | struct sockaddr *addr = p; |
| 2290 | |
| 2291 | if (!is_valid_ether_addr(addr->sa_data)) |
| 2292 | return -EADDRNOTAVAIL; |
| 2293 | |
| 2294 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); |
Alexander Duyck | 28b0759 | 2009-02-06 23:20:31 +0000 | [diff] [blame] | 2295 | memcpy(hw->mac.addr, addr->sa_data, netdev->addr_len); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2296 | |
Alexander Duyck | 28b0759 | 2009-02-06 23:20:31 +0000 | [diff] [blame] | 2297 | hw->mac.ops.rar_set(hw, hw->mac.addr, 0); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2298 | |
| 2299 | return 0; |
| 2300 | } |
| 2301 | |
| 2302 | /** |
| 2303 | * igb_set_multi - Multicast and Promiscuous mode set |
| 2304 | * @netdev: network interface device structure |
| 2305 | * |
| 2306 | * The set_multi entry point is called whenever the multicast address |
| 2307 | * list or the network interface flags are updated. This routine is |
| 2308 | * responsible for configuring the hardware for proper multicast, |
| 2309 | * promiscuous mode, and all-multi behavior. |
| 2310 | **/ |
| 2311 | static void igb_set_multi(struct net_device *netdev) |
| 2312 | { |
| 2313 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 2314 | struct e1000_hw *hw = &adapter->hw; |
| 2315 | struct e1000_mac_info *mac = &hw->mac; |
| 2316 | struct dev_mc_list *mc_ptr; |
| 2317 | u8 *mta_list; |
| 2318 | u32 rctl; |
| 2319 | int i; |
| 2320 | |
| 2321 | /* Check for Promiscuous and All Multicast modes */ |
| 2322 | |
| 2323 | rctl = rd32(E1000_RCTL); |
| 2324 | |
Patrick McHardy | 746b9f0 | 2008-07-16 20:15:45 -0700 | [diff] [blame] | 2325 | if (netdev->flags & IFF_PROMISC) { |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2326 | rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE); |
Patrick McHardy | 746b9f0 | 2008-07-16 20:15:45 -0700 | [diff] [blame] | 2327 | rctl &= ~E1000_RCTL_VFE; |
| 2328 | } else { |
| 2329 | if (netdev->flags & IFF_ALLMULTI) { |
| 2330 | rctl |= E1000_RCTL_MPE; |
| 2331 | rctl &= ~E1000_RCTL_UPE; |
| 2332 | } else |
| 2333 | rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE); |
Patrick McHardy | 78ed11a | 2008-07-16 20:16:14 -0700 | [diff] [blame] | 2334 | rctl |= E1000_RCTL_VFE; |
Patrick McHardy | 746b9f0 | 2008-07-16 20:15:45 -0700 | [diff] [blame] | 2335 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2336 | wr32(E1000_RCTL, rctl); |
| 2337 | |
| 2338 | if (!netdev->mc_count) { |
| 2339 | /* nothing to program, so clear mc list */ |
Alexander Duyck | 8a90086 | 2009-02-06 23:20:10 +0000 | [diff] [blame] | 2340 | igb_update_mc_addr_list(hw, NULL, 0, 1, |
| 2341 | mac->rar_entry_count); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2342 | return; |
| 2343 | } |
| 2344 | |
| 2345 | mta_list = kzalloc(netdev->mc_count * 6, GFP_ATOMIC); |
| 2346 | if (!mta_list) |
| 2347 | return; |
| 2348 | |
| 2349 | /* The shared function expects a packed array of only addresses. */ |
| 2350 | mc_ptr = netdev->mc_list; |
| 2351 | |
| 2352 | for (i = 0; i < netdev->mc_count; i++) { |
| 2353 | if (!mc_ptr) |
| 2354 | break; |
| 2355 | memcpy(mta_list + (i*ETH_ALEN), mc_ptr->dmi_addr, ETH_ALEN); |
| 2356 | mc_ptr = mc_ptr->next; |
| 2357 | } |
Alexander Duyck | 8a90086 | 2009-02-06 23:20:10 +0000 | [diff] [blame] | 2358 | igb_update_mc_addr_list(hw, mta_list, i, 1, mac->rar_entry_count); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2359 | kfree(mta_list); |
| 2360 | } |
| 2361 | |
| 2362 | /* Need to wait a few seconds after link up to get diagnostic information from |
| 2363 | * the phy */ |
| 2364 | static void igb_update_phy_info(unsigned long data) |
| 2365 | { |
| 2366 | struct igb_adapter *adapter = (struct igb_adapter *) data; |
Alexander Duyck | f5f4cf0 | 2008-11-21 21:30:24 -0800 | [diff] [blame] | 2367 | igb_get_phy_info(&adapter->hw); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2368 | } |
| 2369 | |
| 2370 | /** |
Alexander Duyck | 4d6b725 | 2009-02-06 23:16:24 +0000 | [diff] [blame] | 2371 | * igb_has_link - check shared code for link and determine up/down |
| 2372 | * @adapter: pointer to driver private info |
| 2373 | **/ |
| 2374 | static bool igb_has_link(struct igb_adapter *adapter) |
| 2375 | { |
| 2376 | struct e1000_hw *hw = &adapter->hw; |
| 2377 | bool link_active = false; |
| 2378 | s32 ret_val = 0; |
| 2379 | |
| 2380 | /* get_link_status is set on LSC (link status) interrupt or |
| 2381 | * rx sequence error interrupt. get_link_status will stay |
| 2382 | * false until the e1000_check_for_link establishes link |
| 2383 | * for copper adapters ONLY |
| 2384 | */ |
| 2385 | switch (hw->phy.media_type) { |
| 2386 | case e1000_media_type_copper: |
| 2387 | if (hw->mac.get_link_status) { |
| 2388 | ret_val = hw->mac.ops.check_for_link(hw); |
| 2389 | link_active = !hw->mac.get_link_status; |
| 2390 | } else { |
| 2391 | link_active = true; |
| 2392 | } |
| 2393 | break; |
| 2394 | case e1000_media_type_fiber: |
| 2395 | ret_val = hw->mac.ops.check_for_link(hw); |
| 2396 | link_active = !!(rd32(E1000_STATUS) & E1000_STATUS_LU); |
| 2397 | break; |
| 2398 | case e1000_media_type_internal_serdes: |
| 2399 | ret_val = hw->mac.ops.check_for_link(hw); |
| 2400 | link_active = hw->mac.serdes_has_link; |
| 2401 | break; |
| 2402 | default: |
| 2403 | case e1000_media_type_unknown: |
| 2404 | break; |
| 2405 | } |
| 2406 | |
| 2407 | return link_active; |
| 2408 | } |
| 2409 | |
| 2410 | /** |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2411 | * igb_watchdog - Timer Call-back |
| 2412 | * @data: pointer to adapter cast into an unsigned long |
| 2413 | **/ |
| 2414 | static void igb_watchdog(unsigned long data) |
| 2415 | { |
| 2416 | struct igb_adapter *adapter = (struct igb_adapter *)data; |
| 2417 | /* Do the rest outside of interrupt context */ |
| 2418 | schedule_work(&adapter->watchdog_task); |
| 2419 | } |
| 2420 | |
| 2421 | static void igb_watchdog_task(struct work_struct *work) |
| 2422 | { |
| 2423 | struct igb_adapter *adapter = container_of(work, |
| 2424 | struct igb_adapter, watchdog_task); |
| 2425 | struct e1000_hw *hw = &adapter->hw; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2426 | struct net_device *netdev = adapter->netdev; |
| 2427 | struct igb_ring *tx_ring = adapter->tx_ring; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2428 | u32 link; |
Alexander Duyck | 7a6ea55 | 2008-08-26 04:25:03 -0700 | [diff] [blame] | 2429 | u32 eics = 0; |
Alexander Duyck | 7a6ea55 | 2008-08-26 04:25:03 -0700 | [diff] [blame] | 2430 | int i; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2431 | |
Alexander Duyck | 4d6b725 | 2009-02-06 23:16:24 +0000 | [diff] [blame] | 2432 | link = igb_has_link(adapter); |
| 2433 | if ((netif_carrier_ok(netdev)) && link) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2434 | goto link_up; |
| 2435 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2436 | if (link) { |
| 2437 | if (!netif_carrier_ok(netdev)) { |
| 2438 | u32 ctrl; |
| 2439 | hw->mac.ops.get_speed_and_duplex(&adapter->hw, |
| 2440 | &adapter->link_speed, |
| 2441 | &adapter->link_duplex); |
| 2442 | |
| 2443 | ctrl = rd32(E1000_CTRL); |
Alexander Duyck | 527d47c | 2008-11-27 00:21:39 -0800 | [diff] [blame] | 2444 | /* Links status message must follow this format */ |
| 2445 | printk(KERN_INFO "igb: %s NIC Link is Up %d Mbps %s, " |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2446 | "Flow Control: %s\n", |
Alexander Duyck | 527d47c | 2008-11-27 00:21:39 -0800 | [diff] [blame] | 2447 | netdev->name, |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2448 | adapter->link_speed, |
| 2449 | adapter->link_duplex == FULL_DUPLEX ? |
| 2450 | "Full Duplex" : "Half Duplex", |
| 2451 | ((ctrl & E1000_CTRL_TFCE) && (ctrl & |
| 2452 | E1000_CTRL_RFCE)) ? "RX/TX" : ((ctrl & |
| 2453 | E1000_CTRL_RFCE) ? "RX" : ((ctrl & |
| 2454 | E1000_CTRL_TFCE) ? "TX" : "None"))); |
| 2455 | |
| 2456 | /* tweak tx_queue_len according to speed/duplex and |
| 2457 | * adjust the timeout factor */ |
| 2458 | netdev->tx_queue_len = adapter->tx_queue_len; |
| 2459 | adapter->tx_timeout_factor = 1; |
| 2460 | switch (adapter->link_speed) { |
| 2461 | case SPEED_10: |
| 2462 | netdev->tx_queue_len = 10; |
| 2463 | adapter->tx_timeout_factor = 14; |
| 2464 | break; |
| 2465 | case SPEED_100: |
| 2466 | netdev->tx_queue_len = 100; |
| 2467 | /* maybe add some timeout factor ? */ |
| 2468 | break; |
| 2469 | } |
| 2470 | |
| 2471 | netif_carrier_on(netdev); |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 2472 | netif_tx_wake_all_queues(netdev); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2473 | |
Alexander Duyck | 4b1a987 | 2009-02-06 23:19:50 +0000 | [diff] [blame] | 2474 | /* link state has changed, schedule phy info update */ |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2475 | if (!test_bit(__IGB_DOWN, &adapter->state)) |
| 2476 | mod_timer(&adapter->phy_info_timer, |
| 2477 | round_jiffies(jiffies + 2 * HZ)); |
| 2478 | } |
| 2479 | } else { |
| 2480 | if (netif_carrier_ok(netdev)) { |
| 2481 | adapter->link_speed = 0; |
| 2482 | adapter->link_duplex = 0; |
Alexander Duyck | 527d47c | 2008-11-27 00:21:39 -0800 | [diff] [blame] | 2483 | /* Links status message must follow this format */ |
| 2484 | printk(KERN_INFO "igb: %s NIC Link is Down\n", |
| 2485 | netdev->name); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2486 | netif_carrier_off(netdev); |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 2487 | netif_tx_stop_all_queues(netdev); |
Alexander Duyck | 4b1a987 | 2009-02-06 23:19:50 +0000 | [diff] [blame] | 2488 | |
| 2489 | /* link state has changed, schedule phy info update */ |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2490 | if (!test_bit(__IGB_DOWN, &adapter->state)) |
| 2491 | mod_timer(&adapter->phy_info_timer, |
| 2492 | round_jiffies(jiffies + 2 * HZ)); |
| 2493 | } |
| 2494 | } |
| 2495 | |
| 2496 | link_up: |
| 2497 | igb_update_stats(adapter); |
| 2498 | |
Alexander Duyck | 4b1a987 | 2009-02-06 23:19:50 +0000 | [diff] [blame] | 2499 | hw->mac.tx_packet_delta = adapter->stats.tpt - adapter->tpt_old; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2500 | adapter->tpt_old = adapter->stats.tpt; |
Alexander Duyck | 4b1a987 | 2009-02-06 23:19:50 +0000 | [diff] [blame] | 2501 | hw->mac.collision_delta = adapter->stats.colc - adapter->colc_old; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2502 | adapter->colc_old = adapter->stats.colc; |
| 2503 | |
| 2504 | adapter->gorc = adapter->stats.gorc - adapter->gorc_old; |
| 2505 | adapter->gorc_old = adapter->stats.gorc; |
| 2506 | adapter->gotc = adapter->stats.gotc - adapter->gotc_old; |
| 2507 | adapter->gotc_old = adapter->stats.gotc; |
| 2508 | |
| 2509 | igb_update_adaptive(&adapter->hw); |
| 2510 | |
| 2511 | if (!netif_carrier_ok(netdev)) { |
| 2512 | if (IGB_DESC_UNUSED(tx_ring) + 1 < tx_ring->count) { |
| 2513 | /* We've lost link, so the controller stops DMA, |
| 2514 | * but we've got queued Tx work that's never going |
| 2515 | * to get done, so reset controller to flush Tx. |
| 2516 | * (Do the reset outside of interrupt context). */ |
| 2517 | adapter->tx_timeout_count++; |
| 2518 | schedule_work(&adapter->reset_task); |
| 2519 | } |
| 2520 | } |
| 2521 | |
| 2522 | /* Cause software interrupt to ensure rx ring is cleaned */ |
Alexander Duyck | 7a6ea55 | 2008-08-26 04:25:03 -0700 | [diff] [blame] | 2523 | if (adapter->msix_entries) { |
| 2524 | for (i = 0; i < adapter->num_rx_queues; i++) |
| 2525 | eics |= adapter->rx_ring[i].eims_value; |
| 2526 | wr32(E1000_EICS, eics); |
| 2527 | } else { |
| 2528 | wr32(E1000_ICS, E1000_ICS_RXDMT0); |
| 2529 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2530 | |
| 2531 | /* Force detection of hung controller every watchdog period */ |
| 2532 | tx_ring->detect_tx_hung = true; |
| 2533 | |
| 2534 | /* Reset the timer */ |
| 2535 | if (!test_bit(__IGB_DOWN, &adapter->state)) |
| 2536 | mod_timer(&adapter->watchdog_timer, |
| 2537 | round_jiffies(jiffies + 2 * HZ)); |
| 2538 | } |
| 2539 | |
| 2540 | enum latency_range { |
| 2541 | lowest_latency = 0, |
| 2542 | low_latency = 1, |
| 2543 | bulk_latency = 2, |
| 2544 | latency_invalid = 255 |
| 2545 | }; |
| 2546 | |
| 2547 | |
Alexander Duyck | 6eb5a7f | 2008-07-08 15:14:44 -0700 | [diff] [blame] | 2548 | /** |
| 2549 | * igb_update_ring_itr - update the dynamic ITR value based on packet size |
| 2550 | * |
| 2551 | * Stores a new ITR value based on strictly on packet size. This |
| 2552 | * algorithm is less sophisticated than that used in igb_update_itr, |
| 2553 | * due to the difficulty of synchronizing statistics across multiple |
| 2554 | * receive rings. The divisors and thresholds used by this fuction |
| 2555 | * were determined based on theoretical maximum wire speed and testing |
| 2556 | * data, in order to minimize response time while increasing bulk |
| 2557 | * throughput. |
| 2558 | * This functionality is controlled by the InterruptThrottleRate module |
| 2559 | * parameter (see igb_param.c) |
| 2560 | * NOTE: This function is called only when operating in a multiqueue |
| 2561 | * receive environment. |
| 2562 | * @rx_ring: pointer to ring |
| 2563 | **/ |
| 2564 | static void igb_update_ring_itr(struct igb_ring *rx_ring) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2565 | { |
Alexander Duyck | 6eb5a7f | 2008-07-08 15:14:44 -0700 | [diff] [blame] | 2566 | int new_val = rx_ring->itr_val; |
| 2567 | int avg_wire_size = 0; |
| 2568 | struct igb_adapter *adapter = rx_ring->adapter; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2569 | |
Alexander Duyck | 6eb5a7f | 2008-07-08 15:14:44 -0700 | [diff] [blame] | 2570 | if (!rx_ring->total_packets) |
| 2571 | goto clear_counts; /* no packets, so don't do anything */ |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2572 | |
Alexander Duyck | 6eb5a7f | 2008-07-08 15:14:44 -0700 | [diff] [blame] | 2573 | /* For non-gigabit speeds, just fix the interrupt rate at 4000 |
| 2574 | * ints/sec - ITR timer value of 120 ticks. |
| 2575 | */ |
| 2576 | if (adapter->link_speed != SPEED_1000) { |
| 2577 | new_val = 120; |
| 2578 | goto set_itr_val; |
| 2579 | } |
| 2580 | avg_wire_size = rx_ring->total_bytes / rx_ring->total_packets; |
| 2581 | |
| 2582 | /* Add 24 bytes to size to account for CRC, preamble, and gap */ |
| 2583 | avg_wire_size += 24; |
| 2584 | |
| 2585 | /* Don't starve jumbo frames */ |
| 2586 | avg_wire_size = min(avg_wire_size, 3000); |
| 2587 | |
| 2588 | /* Give a little boost to mid-size frames */ |
| 2589 | if ((avg_wire_size > 300) && (avg_wire_size < 1200)) |
| 2590 | new_val = avg_wire_size / 3; |
| 2591 | else |
| 2592 | new_val = avg_wire_size / 2; |
| 2593 | |
| 2594 | set_itr_val: |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2595 | if (new_val != rx_ring->itr_val) { |
| 2596 | rx_ring->itr_val = new_val; |
Alexander Duyck | 6eb5a7f | 2008-07-08 15:14:44 -0700 | [diff] [blame] | 2597 | rx_ring->set_itr = 1; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2598 | } |
Alexander Duyck | 6eb5a7f | 2008-07-08 15:14:44 -0700 | [diff] [blame] | 2599 | clear_counts: |
| 2600 | rx_ring->total_bytes = 0; |
| 2601 | rx_ring->total_packets = 0; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2602 | } |
| 2603 | |
| 2604 | /** |
| 2605 | * igb_update_itr - update the dynamic ITR value based on statistics |
| 2606 | * Stores a new ITR value based on packets and byte |
| 2607 | * counts during the last interrupt. The advantage of per interrupt |
| 2608 | * computation is faster updates and more accurate ITR for the current |
| 2609 | * traffic pattern. Constants in this function were computed |
| 2610 | * based on theoretical maximum wire speed and thresholds were set based |
| 2611 | * on testing data as well as attempting to minimize response time |
| 2612 | * while increasing bulk throughput. |
| 2613 | * this functionality is controlled by the InterruptThrottleRate module |
| 2614 | * parameter (see igb_param.c) |
| 2615 | * NOTE: These calculations are only valid when operating in a single- |
| 2616 | * queue environment. |
| 2617 | * @adapter: pointer to adapter |
| 2618 | * @itr_setting: current adapter->itr |
| 2619 | * @packets: the number of packets during this measurement interval |
| 2620 | * @bytes: the number of bytes during this measurement interval |
| 2621 | **/ |
| 2622 | static unsigned int igb_update_itr(struct igb_adapter *adapter, u16 itr_setting, |
| 2623 | int packets, int bytes) |
| 2624 | { |
| 2625 | unsigned int retval = itr_setting; |
| 2626 | |
| 2627 | if (packets == 0) |
| 2628 | goto update_itr_done; |
| 2629 | |
| 2630 | switch (itr_setting) { |
| 2631 | case lowest_latency: |
| 2632 | /* handle TSO and jumbo frames */ |
| 2633 | if (bytes/packets > 8000) |
| 2634 | retval = bulk_latency; |
| 2635 | else if ((packets < 5) && (bytes > 512)) |
| 2636 | retval = low_latency; |
| 2637 | break; |
| 2638 | case low_latency: /* 50 usec aka 20000 ints/s */ |
| 2639 | if (bytes > 10000) { |
| 2640 | /* this if handles the TSO accounting */ |
| 2641 | if (bytes/packets > 8000) { |
| 2642 | retval = bulk_latency; |
| 2643 | } else if ((packets < 10) || ((bytes/packets) > 1200)) { |
| 2644 | retval = bulk_latency; |
| 2645 | } else if ((packets > 35)) { |
| 2646 | retval = lowest_latency; |
| 2647 | } |
| 2648 | } else if (bytes/packets > 2000) { |
| 2649 | retval = bulk_latency; |
| 2650 | } else if (packets <= 2 && bytes < 512) { |
| 2651 | retval = lowest_latency; |
| 2652 | } |
| 2653 | break; |
| 2654 | case bulk_latency: /* 250 usec aka 4000 ints/s */ |
| 2655 | if (bytes > 25000) { |
| 2656 | if (packets > 35) |
| 2657 | retval = low_latency; |
| 2658 | } else if (bytes < 6000) { |
| 2659 | retval = low_latency; |
| 2660 | } |
| 2661 | break; |
| 2662 | } |
| 2663 | |
| 2664 | update_itr_done: |
| 2665 | return retval; |
| 2666 | } |
| 2667 | |
Alexander Duyck | 6eb5a7f | 2008-07-08 15:14:44 -0700 | [diff] [blame] | 2668 | static void igb_set_itr(struct igb_adapter *adapter) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2669 | { |
| 2670 | u16 current_itr; |
| 2671 | u32 new_itr = adapter->itr; |
| 2672 | |
| 2673 | /* for non-gigabit speeds, just fix the interrupt rate at 4000 */ |
| 2674 | if (adapter->link_speed != SPEED_1000) { |
| 2675 | current_itr = 0; |
| 2676 | new_itr = 4000; |
| 2677 | goto set_itr_now; |
| 2678 | } |
| 2679 | |
| 2680 | adapter->rx_itr = igb_update_itr(adapter, |
| 2681 | adapter->rx_itr, |
| 2682 | adapter->rx_ring->total_packets, |
| 2683 | adapter->rx_ring->total_bytes); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2684 | |
Alexander Duyck | 6eb5a7f | 2008-07-08 15:14:44 -0700 | [diff] [blame] | 2685 | if (adapter->rx_ring->buddy) { |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2686 | adapter->tx_itr = igb_update_itr(adapter, |
| 2687 | adapter->tx_itr, |
| 2688 | adapter->tx_ring->total_packets, |
| 2689 | adapter->tx_ring->total_bytes); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2690 | |
| 2691 | current_itr = max(adapter->rx_itr, adapter->tx_itr); |
| 2692 | } else { |
| 2693 | current_itr = adapter->rx_itr; |
| 2694 | } |
| 2695 | |
Alexander Duyck | 6eb5a7f | 2008-07-08 15:14:44 -0700 | [diff] [blame] | 2696 | /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
| 2697 | if (adapter->itr_setting == 3 && |
| 2698 | current_itr == lowest_latency) |
| 2699 | current_itr = low_latency; |
| 2700 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2701 | switch (current_itr) { |
| 2702 | /* counts and packets in update_itr are dependent on these numbers */ |
| 2703 | case lowest_latency: |
| 2704 | new_itr = 70000; |
| 2705 | break; |
| 2706 | case low_latency: |
| 2707 | new_itr = 20000; /* aka hwitr = ~200 */ |
| 2708 | break; |
| 2709 | case bulk_latency: |
| 2710 | new_itr = 4000; |
| 2711 | break; |
| 2712 | default: |
| 2713 | break; |
| 2714 | } |
| 2715 | |
| 2716 | set_itr_now: |
Alexander Duyck | 6eb5a7f | 2008-07-08 15:14:44 -0700 | [diff] [blame] | 2717 | adapter->rx_ring->total_bytes = 0; |
| 2718 | adapter->rx_ring->total_packets = 0; |
| 2719 | if (adapter->rx_ring->buddy) { |
| 2720 | adapter->rx_ring->buddy->total_bytes = 0; |
| 2721 | adapter->rx_ring->buddy->total_packets = 0; |
| 2722 | } |
| 2723 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2724 | if (new_itr != adapter->itr) { |
| 2725 | /* this attempts to bias the interrupt rate towards Bulk |
| 2726 | * by adding intermediate steps when interrupt rate is |
| 2727 | * increasing */ |
| 2728 | new_itr = new_itr > adapter->itr ? |
| 2729 | min(adapter->itr + (new_itr >> 2), new_itr) : |
| 2730 | new_itr; |
| 2731 | /* Don't write the value here; it resets the adapter's |
| 2732 | * internal timer, and causes us to delay far longer than |
| 2733 | * we should between interrupts. Instead, we write the ITR |
| 2734 | * value at the beginning of the next interrupt so the timing |
| 2735 | * ends up being correct. |
| 2736 | */ |
| 2737 | adapter->itr = new_itr; |
Alexander Duyck | 6eb5a7f | 2008-07-08 15:14:44 -0700 | [diff] [blame] | 2738 | adapter->rx_ring->itr_val = 1000000000 / (new_itr * 256); |
| 2739 | adapter->rx_ring->set_itr = 1; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2740 | } |
| 2741 | |
| 2742 | return; |
| 2743 | } |
| 2744 | |
| 2745 | |
| 2746 | #define IGB_TX_FLAGS_CSUM 0x00000001 |
| 2747 | #define IGB_TX_FLAGS_VLAN 0x00000002 |
| 2748 | #define IGB_TX_FLAGS_TSO 0x00000004 |
| 2749 | #define IGB_TX_FLAGS_IPV4 0x00000008 |
| 2750 | #define IGB_TX_FLAGS_VLAN_MASK 0xffff0000 |
| 2751 | #define IGB_TX_FLAGS_VLAN_SHIFT 16 |
| 2752 | |
| 2753 | static inline int igb_tso_adv(struct igb_adapter *adapter, |
| 2754 | struct igb_ring *tx_ring, |
| 2755 | struct sk_buff *skb, u32 tx_flags, u8 *hdr_len) |
| 2756 | { |
| 2757 | struct e1000_adv_tx_context_desc *context_desc; |
| 2758 | unsigned int i; |
| 2759 | int err; |
| 2760 | struct igb_buffer *buffer_info; |
| 2761 | u32 info = 0, tu_cmd = 0; |
| 2762 | u32 mss_l4len_idx, l4len; |
| 2763 | *hdr_len = 0; |
| 2764 | |
| 2765 | if (skb_header_cloned(skb)) { |
| 2766 | err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); |
| 2767 | if (err) |
| 2768 | return err; |
| 2769 | } |
| 2770 | |
| 2771 | l4len = tcp_hdrlen(skb); |
| 2772 | *hdr_len += l4len; |
| 2773 | |
| 2774 | if (skb->protocol == htons(ETH_P_IP)) { |
| 2775 | struct iphdr *iph = ip_hdr(skb); |
| 2776 | iph->tot_len = 0; |
| 2777 | iph->check = 0; |
| 2778 | tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, |
| 2779 | iph->daddr, 0, |
| 2780 | IPPROTO_TCP, |
| 2781 | 0); |
| 2782 | } else if (skb_shinfo(skb)->gso_type == SKB_GSO_TCPV6) { |
| 2783 | ipv6_hdr(skb)->payload_len = 0; |
| 2784 | tcp_hdr(skb)->check = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, |
| 2785 | &ipv6_hdr(skb)->daddr, |
| 2786 | 0, IPPROTO_TCP, 0); |
| 2787 | } |
| 2788 | |
| 2789 | i = tx_ring->next_to_use; |
| 2790 | |
| 2791 | buffer_info = &tx_ring->buffer_info[i]; |
| 2792 | context_desc = E1000_TX_CTXTDESC_ADV(*tx_ring, i); |
| 2793 | /* VLAN MACLEN IPLEN */ |
| 2794 | if (tx_flags & IGB_TX_FLAGS_VLAN) |
| 2795 | info |= (tx_flags & IGB_TX_FLAGS_VLAN_MASK); |
| 2796 | info |= (skb_network_offset(skb) << E1000_ADVTXD_MACLEN_SHIFT); |
| 2797 | *hdr_len += skb_network_offset(skb); |
| 2798 | info |= skb_network_header_len(skb); |
| 2799 | *hdr_len += skb_network_header_len(skb); |
| 2800 | context_desc->vlan_macip_lens = cpu_to_le32(info); |
| 2801 | |
| 2802 | /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */ |
| 2803 | tu_cmd |= (E1000_TXD_CMD_DEXT | E1000_ADVTXD_DTYP_CTXT); |
| 2804 | |
| 2805 | if (skb->protocol == htons(ETH_P_IP)) |
| 2806 | tu_cmd |= E1000_ADVTXD_TUCMD_IPV4; |
| 2807 | tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP; |
| 2808 | |
| 2809 | context_desc->type_tucmd_mlhl = cpu_to_le32(tu_cmd); |
| 2810 | |
| 2811 | /* MSS L4LEN IDX */ |
| 2812 | mss_l4len_idx = (skb_shinfo(skb)->gso_size << E1000_ADVTXD_MSS_SHIFT); |
| 2813 | mss_l4len_idx |= (l4len << E1000_ADVTXD_L4LEN_SHIFT); |
| 2814 | |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 2815 | /* Context index must be unique per ring. */ |
| 2816 | if (adapter->flags & IGB_FLAG_NEED_CTX_IDX) |
| 2817 | mss_l4len_idx |= tx_ring->queue_index << 4; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2818 | |
| 2819 | context_desc->mss_l4len_idx = cpu_to_le32(mss_l4len_idx); |
| 2820 | context_desc->seqnum_seed = 0; |
| 2821 | |
| 2822 | buffer_info->time_stamp = jiffies; |
Alexander Duyck | 0e014cb | 2008-12-26 01:33:18 -0800 | [diff] [blame] | 2823 | buffer_info->next_to_watch = i; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2824 | buffer_info->dma = 0; |
| 2825 | i++; |
| 2826 | if (i == tx_ring->count) |
| 2827 | i = 0; |
| 2828 | |
| 2829 | tx_ring->next_to_use = i; |
| 2830 | |
| 2831 | return true; |
| 2832 | } |
| 2833 | |
| 2834 | static inline bool igb_tx_csum_adv(struct igb_adapter *adapter, |
| 2835 | struct igb_ring *tx_ring, |
| 2836 | struct sk_buff *skb, u32 tx_flags) |
| 2837 | { |
| 2838 | struct e1000_adv_tx_context_desc *context_desc; |
| 2839 | unsigned int i; |
| 2840 | struct igb_buffer *buffer_info; |
| 2841 | u32 info = 0, tu_cmd = 0; |
| 2842 | |
| 2843 | if ((skb->ip_summed == CHECKSUM_PARTIAL) || |
| 2844 | (tx_flags & IGB_TX_FLAGS_VLAN)) { |
| 2845 | i = tx_ring->next_to_use; |
| 2846 | buffer_info = &tx_ring->buffer_info[i]; |
| 2847 | context_desc = E1000_TX_CTXTDESC_ADV(*tx_ring, i); |
| 2848 | |
| 2849 | if (tx_flags & IGB_TX_FLAGS_VLAN) |
| 2850 | info |= (tx_flags & IGB_TX_FLAGS_VLAN_MASK); |
| 2851 | info |= (skb_network_offset(skb) << E1000_ADVTXD_MACLEN_SHIFT); |
| 2852 | if (skb->ip_summed == CHECKSUM_PARTIAL) |
| 2853 | info |= skb_network_header_len(skb); |
| 2854 | |
| 2855 | context_desc->vlan_macip_lens = cpu_to_le32(info); |
| 2856 | |
| 2857 | tu_cmd |= (E1000_TXD_CMD_DEXT | E1000_ADVTXD_DTYP_CTXT); |
| 2858 | |
| 2859 | if (skb->ip_summed == CHECKSUM_PARTIAL) { |
Mitch Williams | 44b0cda | 2008-03-07 10:32:13 -0800 | [diff] [blame] | 2860 | switch (skb->protocol) { |
Harvey Harrison | 09640e6 | 2009-02-01 00:45:17 -0800 | [diff] [blame] | 2861 | case cpu_to_be16(ETH_P_IP): |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2862 | tu_cmd |= E1000_ADVTXD_TUCMD_IPV4; |
Mitch Williams | 44b0cda | 2008-03-07 10:32:13 -0800 | [diff] [blame] | 2863 | if (ip_hdr(skb)->protocol == IPPROTO_TCP) |
| 2864 | tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP; |
| 2865 | break; |
Harvey Harrison | 09640e6 | 2009-02-01 00:45:17 -0800 | [diff] [blame] | 2866 | case cpu_to_be16(ETH_P_IPV6): |
Mitch Williams | 44b0cda | 2008-03-07 10:32:13 -0800 | [diff] [blame] | 2867 | /* XXX what about other V6 headers?? */ |
| 2868 | if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP) |
| 2869 | tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP; |
| 2870 | break; |
| 2871 | default: |
| 2872 | if (unlikely(net_ratelimit())) |
| 2873 | dev_warn(&adapter->pdev->dev, |
| 2874 | "partial checksum but proto=%x!\n", |
| 2875 | skb->protocol); |
| 2876 | break; |
| 2877 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2878 | } |
| 2879 | |
| 2880 | context_desc->type_tucmd_mlhl = cpu_to_le32(tu_cmd); |
| 2881 | context_desc->seqnum_seed = 0; |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 2882 | if (adapter->flags & IGB_FLAG_NEED_CTX_IDX) |
| 2883 | context_desc->mss_l4len_idx = |
| 2884 | cpu_to_le32(tx_ring->queue_index << 4); |
Alexander Duyck | 265de40 | 2009-02-06 23:22:52 +0000 | [diff] [blame] | 2885 | else |
| 2886 | context_desc->mss_l4len_idx = 0; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2887 | |
| 2888 | buffer_info->time_stamp = jiffies; |
Alexander Duyck | 0e014cb | 2008-12-26 01:33:18 -0800 | [diff] [blame] | 2889 | buffer_info->next_to_watch = i; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2890 | buffer_info->dma = 0; |
| 2891 | |
| 2892 | i++; |
| 2893 | if (i == tx_ring->count) |
| 2894 | i = 0; |
| 2895 | tx_ring->next_to_use = i; |
| 2896 | |
| 2897 | return true; |
| 2898 | } |
| 2899 | |
| 2900 | |
| 2901 | return false; |
| 2902 | } |
| 2903 | |
| 2904 | #define IGB_MAX_TXD_PWR 16 |
| 2905 | #define IGB_MAX_DATA_PER_TXD (1<<IGB_MAX_TXD_PWR) |
| 2906 | |
| 2907 | static inline int igb_tx_map_adv(struct igb_adapter *adapter, |
Alexander Duyck | 0e014cb | 2008-12-26 01:33:18 -0800 | [diff] [blame] | 2908 | struct igb_ring *tx_ring, struct sk_buff *skb, |
| 2909 | unsigned int first) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2910 | { |
| 2911 | struct igb_buffer *buffer_info; |
| 2912 | unsigned int len = skb_headlen(skb); |
| 2913 | unsigned int count = 0, i; |
| 2914 | unsigned int f; |
| 2915 | |
| 2916 | i = tx_ring->next_to_use; |
| 2917 | |
| 2918 | buffer_info = &tx_ring->buffer_info[i]; |
| 2919 | BUG_ON(len >= IGB_MAX_DATA_PER_TXD); |
| 2920 | buffer_info->length = len; |
| 2921 | /* set time_stamp *before* dma to help avoid a possible race */ |
| 2922 | buffer_info->time_stamp = jiffies; |
Alexander Duyck | 0e014cb | 2008-12-26 01:33:18 -0800 | [diff] [blame] | 2923 | buffer_info->next_to_watch = i; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2924 | buffer_info->dma = pci_map_single(adapter->pdev, skb->data, len, |
| 2925 | PCI_DMA_TODEVICE); |
| 2926 | count++; |
| 2927 | i++; |
| 2928 | if (i == tx_ring->count) |
| 2929 | i = 0; |
| 2930 | |
| 2931 | for (f = 0; f < skb_shinfo(skb)->nr_frags; f++) { |
| 2932 | struct skb_frag_struct *frag; |
| 2933 | |
| 2934 | frag = &skb_shinfo(skb)->frags[f]; |
| 2935 | len = frag->size; |
| 2936 | |
| 2937 | buffer_info = &tx_ring->buffer_info[i]; |
| 2938 | BUG_ON(len >= IGB_MAX_DATA_PER_TXD); |
| 2939 | buffer_info->length = len; |
| 2940 | buffer_info->time_stamp = jiffies; |
Alexander Duyck | 0e014cb | 2008-12-26 01:33:18 -0800 | [diff] [blame] | 2941 | buffer_info->next_to_watch = i; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2942 | buffer_info->dma = pci_map_page(adapter->pdev, |
| 2943 | frag->page, |
| 2944 | frag->page_offset, |
| 2945 | len, |
| 2946 | PCI_DMA_TODEVICE); |
| 2947 | |
| 2948 | count++; |
| 2949 | i++; |
| 2950 | if (i == tx_ring->count) |
| 2951 | i = 0; |
| 2952 | } |
| 2953 | |
Alexander Duyck | 0e014cb | 2008-12-26 01:33:18 -0800 | [diff] [blame] | 2954 | i = ((i == 0) ? tx_ring->count - 1 : i - 1); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2955 | tx_ring->buffer_info[i].skb = skb; |
Alexander Duyck | 0e014cb | 2008-12-26 01:33:18 -0800 | [diff] [blame] | 2956 | tx_ring->buffer_info[first].next_to_watch = i; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2957 | |
| 2958 | return count; |
| 2959 | } |
| 2960 | |
| 2961 | static inline void igb_tx_queue_adv(struct igb_adapter *adapter, |
| 2962 | struct igb_ring *tx_ring, |
| 2963 | int tx_flags, int count, u32 paylen, |
| 2964 | u8 hdr_len) |
| 2965 | { |
| 2966 | union e1000_adv_tx_desc *tx_desc = NULL; |
| 2967 | struct igb_buffer *buffer_info; |
| 2968 | u32 olinfo_status = 0, cmd_type_len; |
| 2969 | unsigned int i; |
| 2970 | |
| 2971 | cmd_type_len = (E1000_ADVTXD_DTYP_DATA | E1000_ADVTXD_DCMD_IFCS | |
| 2972 | E1000_ADVTXD_DCMD_DEXT); |
| 2973 | |
| 2974 | if (tx_flags & IGB_TX_FLAGS_VLAN) |
| 2975 | cmd_type_len |= E1000_ADVTXD_DCMD_VLE; |
| 2976 | |
| 2977 | if (tx_flags & IGB_TX_FLAGS_TSO) { |
| 2978 | cmd_type_len |= E1000_ADVTXD_DCMD_TSE; |
| 2979 | |
| 2980 | /* insert tcp checksum */ |
| 2981 | olinfo_status |= E1000_TXD_POPTS_TXSM << 8; |
| 2982 | |
| 2983 | /* insert ip checksum */ |
| 2984 | if (tx_flags & IGB_TX_FLAGS_IPV4) |
| 2985 | olinfo_status |= E1000_TXD_POPTS_IXSM << 8; |
| 2986 | |
| 2987 | } else if (tx_flags & IGB_TX_FLAGS_CSUM) { |
| 2988 | olinfo_status |= E1000_TXD_POPTS_TXSM << 8; |
| 2989 | } |
| 2990 | |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 2991 | if ((adapter->flags & IGB_FLAG_NEED_CTX_IDX) && |
| 2992 | (tx_flags & (IGB_TX_FLAGS_CSUM | IGB_TX_FLAGS_TSO | |
| 2993 | IGB_TX_FLAGS_VLAN))) |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 2994 | olinfo_status |= tx_ring->queue_index << 4; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2995 | |
| 2996 | olinfo_status |= ((paylen - hdr_len) << E1000_ADVTXD_PAYLEN_SHIFT); |
| 2997 | |
| 2998 | i = tx_ring->next_to_use; |
| 2999 | while (count--) { |
| 3000 | buffer_info = &tx_ring->buffer_info[i]; |
| 3001 | tx_desc = E1000_TX_DESC_ADV(*tx_ring, i); |
| 3002 | tx_desc->read.buffer_addr = cpu_to_le64(buffer_info->dma); |
| 3003 | tx_desc->read.cmd_type_len = |
| 3004 | cpu_to_le32(cmd_type_len | buffer_info->length); |
| 3005 | tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status); |
| 3006 | i++; |
| 3007 | if (i == tx_ring->count) |
| 3008 | i = 0; |
| 3009 | } |
| 3010 | |
| 3011 | tx_desc->read.cmd_type_len |= cpu_to_le32(adapter->txd_cmd); |
| 3012 | /* Force memory writes to complete before letting h/w |
| 3013 | * know there are new descriptors to fetch. (Only |
| 3014 | * applicable for weak-ordered memory model archs, |
| 3015 | * such as IA-64). */ |
| 3016 | wmb(); |
| 3017 | |
| 3018 | tx_ring->next_to_use = i; |
| 3019 | writel(i, adapter->hw.hw_addr + tx_ring->tail); |
| 3020 | /* we need this if more than one processor can write to our tail |
| 3021 | * at a time, it syncronizes IO on IA64/Altix systems */ |
| 3022 | mmiowb(); |
| 3023 | } |
| 3024 | |
| 3025 | static int __igb_maybe_stop_tx(struct net_device *netdev, |
| 3026 | struct igb_ring *tx_ring, int size) |
| 3027 | { |
| 3028 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 3029 | |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 3030 | netif_stop_subqueue(netdev, tx_ring->queue_index); |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 3031 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3032 | /* Herbert's original patch had: |
| 3033 | * smp_mb__after_netif_stop_queue(); |
| 3034 | * but since that doesn't exist yet, just open code it. */ |
| 3035 | smp_mb(); |
| 3036 | |
| 3037 | /* We need to check again in a case another CPU has just |
| 3038 | * made room available. */ |
| 3039 | if (IGB_DESC_UNUSED(tx_ring) < size) |
| 3040 | return -EBUSY; |
| 3041 | |
| 3042 | /* A reprieve! */ |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 3043 | netif_wake_subqueue(netdev, tx_ring->queue_index); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3044 | ++adapter->restart_queue; |
| 3045 | return 0; |
| 3046 | } |
| 3047 | |
| 3048 | static int igb_maybe_stop_tx(struct net_device *netdev, |
| 3049 | struct igb_ring *tx_ring, int size) |
| 3050 | { |
| 3051 | if (IGB_DESC_UNUSED(tx_ring) >= size) |
| 3052 | return 0; |
| 3053 | return __igb_maybe_stop_tx(netdev, tx_ring, size); |
| 3054 | } |
| 3055 | |
| 3056 | #define TXD_USE_COUNT(S) (((S) >> (IGB_MAX_TXD_PWR)) + 1) |
| 3057 | |
| 3058 | static int igb_xmit_frame_ring_adv(struct sk_buff *skb, |
| 3059 | struct net_device *netdev, |
| 3060 | struct igb_ring *tx_ring) |
| 3061 | { |
| 3062 | struct igb_adapter *adapter = netdev_priv(netdev); |
Alexander Duyck | 0e014cb | 2008-12-26 01:33:18 -0800 | [diff] [blame] | 3063 | unsigned int first; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3064 | unsigned int tx_flags = 0; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3065 | u8 hdr_len = 0; |
| 3066 | int tso = 0; |
| 3067 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3068 | if (test_bit(__IGB_DOWN, &adapter->state)) { |
| 3069 | dev_kfree_skb_any(skb); |
| 3070 | return NETDEV_TX_OK; |
| 3071 | } |
| 3072 | |
| 3073 | if (skb->len <= 0) { |
| 3074 | dev_kfree_skb_any(skb); |
| 3075 | return NETDEV_TX_OK; |
| 3076 | } |
| 3077 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3078 | /* need: 1 descriptor per page, |
| 3079 | * + 2 desc gap to keep tail from touching head, |
| 3080 | * + 1 desc for skb->data, |
| 3081 | * + 1 desc for context descriptor, |
| 3082 | * otherwise try next time */ |
| 3083 | if (igb_maybe_stop_tx(netdev, tx_ring, skb_shinfo(skb)->nr_frags + 4)) { |
| 3084 | /* this is a hard error */ |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3085 | return NETDEV_TX_BUSY; |
| 3086 | } |
Alexander Duyck | 6eb5a7f | 2008-07-08 15:14:44 -0700 | [diff] [blame] | 3087 | skb_orphan(skb); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3088 | |
| 3089 | if (adapter->vlgrp && vlan_tx_tag_present(skb)) { |
| 3090 | tx_flags |= IGB_TX_FLAGS_VLAN; |
| 3091 | tx_flags |= (vlan_tx_tag_get(skb) << IGB_TX_FLAGS_VLAN_SHIFT); |
| 3092 | } |
| 3093 | |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 3094 | if (skb->protocol == htons(ETH_P_IP)) |
| 3095 | tx_flags |= IGB_TX_FLAGS_IPV4; |
| 3096 | |
Alexander Duyck | 0e014cb | 2008-12-26 01:33:18 -0800 | [diff] [blame] | 3097 | first = tx_ring->next_to_use; |
| 3098 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3099 | tso = skb_is_gso(skb) ? igb_tso_adv(adapter, tx_ring, skb, tx_flags, |
| 3100 | &hdr_len) : 0; |
| 3101 | |
| 3102 | if (tso < 0) { |
| 3103 | dev_kfree_skb_any(skb); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3104 | return NETDEV_TX_OK; |
| 3105 | } |
| 3106 | |
| 3107 | if (tso) |
| 3108 | tx_flags |= IGB_TX_FLAGS_TSO; |
| 3109 | else if (igb_tx_csum_adv(adapter, tx_ring, skb, tx_flags)) |
| 3110 | if (skb->ip_summed == CHECKSUM_PARTIAL) |
| 3111 | tx_flags |= IGB_TX_FLAGS_CSUM; |
| 3112 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3113 | igb_tx_queue_adv(adapter, tx_ring, tx_flags, |
Alexander Duyck | 0e014cb | 2008-12-26 01:33:18 -0800 | [diff] [blame] | 3114 | igb_tx_map_adv(adapter, tx_ring, skb, first), |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3115 | skb->len, hdr_len); |
| 3116 | |
| 3117 | netdev->trans_start = jiffies; |
| 3118 | |
| 3119 | /* Make sure there is space in the ring for the next send. */ |
| 3120 | igb_maybe_stop_tx(netdev, tx_ring, MAX_SKB_FRAGS + 4); |
| 3121 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3122 | return NETDEV_TX_OK; |
| 3123 | } |
| 3124 | |
| 3125 | static int igb_xmit_frame_adv(struct sk_buff *skb, struct net_device *netdev) |
| 3126 | { |
| 3127 | struct igb_adapter *adapter = netdev_priv(netdev); |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 3128 | struct igb_ring *tx_ring; |
| 3129 | |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 3130 | int r_idx = 0; |
| 3131 | r_idx = skb->queue_mapping & (IGB_MAX_TX_QUEUES - 1); |
| 3132 | tx_ring = adapter->multi_tx_table[r_idx]; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3133 | |
| 3134 | /* This goes back to the question of how to logically map a tx queue |
| 3135 | * to a flow. Right now, performance is impacted slightly negatively |
| 3136 | * if using multiple tx queues. If the stack breaks away from a |
| 3137 | * single qdisc implementation, we can look at this again. */ |
| 3138 | return (igb_xmit_frame_ring_adv(skb, netdev, tx_ring)); |
| 3139 | } |
| 3140 | |
| 3141 | /** |
| 3142 | * igb_tx_timeout - Respond to a Tx Hang |
| 3143 | * @netdev: network interface device structure |
| 3144 | **/ |
| 3145 | static void igb_tx_timeout(struct net_device *netdev) |
| 3146 | { |
| 3147 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 3148 | struct e1000_hw *hw = &adapter->hw; |
| 3149 | |
| 3150 | /* Do the reset outside of interrupt context */ |
| 3151 | adapter->tx_timeout_count++; |
| 3152 | schedule_work(&adapter->reset_task); |
Alexander Duyck | 265de40 | 2009-02-06 23:22:52 +0000 | [diff] [blame] | 3153 | wr32(E1000_EICS, |
| 3154 | (adapter->eims_enable_mask & ~adapter->eims_other)); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3155 | } |
| 3156 | |
| 3157 | static void igb_reset_task(struct work_struct *work) |
| 3158 | { |
| 3159 | struct igb_adapter *adapter; |
| 3160 | adapter = container_of(work, struct igb_adapter, reset_task); |
| 3161 | |
| 3162 | igb_reinit_locked(adapter); |
| 3163 | } |
| 3164 | |
| 3165 | /** |
| 3166 | * igb_get_stats - Get System Network Statistics |
| 3167 | * @netdev: network interface device structure |
| 3168 | * |
| 3169 | * Returns the address of the device statistics structure. |
| 3170 | * The statistics are actually updated from the timer callback. |
| 3171 | **/ |
| 3172 | static struct net_device_stats * |
| 3173 | igb_get_stats(struct net_device *netdev) |
| 3174 | { |
| 3175 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 3176 | |
| 3177 | /* only return the current stats */ |
| 3178 | return &adapter->net_stats; |
| 3179 | } |
| 3180 | |
| 3181 | /** |
| 3182 | * igb_change_mtu - Change the Maximum Transfer Unit |
| 3183 | * @netdev: network interface device structure |
| 3184 | * @new_mtu: new value for maximum frame size |
| 3185 | * |
| 3186 | * Returns 0 on success, negative on failure |
| 3187 | **/ |
| 3188 | static int igb_change_mtu(struct net_device *netdev, int new_mtu) |
| 3189 | { |
| 3190 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 3191 | int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN; |
| 3192 | |
| 3193 | if ((max_frame < ETH_ZLEN + ETH_FCS_LEN) || |
| 3194 | (max_frame > MAX_JUMBO_FRAME_SIZE)) { |
| 3195 | dev_err(&adapter->pdev->dev, "Invalid MTU setting\n"); |
| 3196 | return -EINVAL; |
| 3197 | } |
| 3198 | |
| 3199 | #define MAX_STD_JUMBO_FRAME_SIZE 9234 |
| 3200 | if (max_frame > MAX_STD_JUMBO_FRAME_SIZE) { |
| 3201 | dev_err(&adapter->pdev->dev, "MTU > 9216 not supported.\n"); |
| 3202 | return -EINVAL; |
| 3203 | } |
| 3204 | |
| 3205 | while (test_and_set_bit(__IGB_RESETTING, &adapter->state)) |
| 3206 | msleep(1); |
| 3207 | /* igb_down has a dependency on max_frame_size */ |
| 3208 | adapter->max_frame_size = max_frame; |
| 3209 | if (netif_running(netdev)) |
| 3210 | igb_down(adapter); |
| 3211 | |
| 3212 | /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN |
| 3213 | * means we reserve 2 more, this pushes us to allocate from the next |
| 3214 | * larger slab size. |
| 3215 | * i.e. RXBUFFER_2048 --> size-4096 slab |
| 3216 | */ |
| 3217 | |
| 3218 | if (max_frame <= IGB_RXBUFFER_256) |
| 3219 | adapter->rx_buffer_len = IGB_RXBUFFER_256; |
| 3220 | else if (max_frame <= IGB_RXBUFFER_512) |
| 3221 | adapter->rx_buffer_len = IGB_RXBUFFER_512; |
| 3222 | else if (max_frame <= IGB_RXBUFFER_1024) |
| 3223 | adapter->rx_buffer_len = IGB_RXBUFFER_1024; |
| 3224 | else if (max_frame <= IGB_RXBUFFER_2048) |
| 3225 | adapter->rx_buffer_len = IGB_RXBUFFER_2048; |
| 3226 | else |
Alexander Duyck | bf36c1a | 2008-07-08 15:11:40 -0700 | [diff] [blame] | 3227 | #if (PAGE_SIZE / 2) > IGB_RXBUFFER_16384 |
| 3228 | adapter->rx_buffer_len = IGB_RXBUFFER_16384; |
| 3229 | #else |
| 3230 | adapter->rx_buffer_len = PAGE_SIZE / 2; |
| 3231 | #endif |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3232 | /* adjust allocation if LPE protects us, and we aren't using SBP */ |
| 3233 | if ((max_frame == ETH_FRAME_LEN + ETH_FCS_LEN) || |
| 3234 | (max_frame == MAXIMUM_ETHERNET_VLAN_SIZE)) |
| 3235 | adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE; |
| 3236 | |
| 3237 | dev_info(&adapter->pdev->dev, "changing MTU from %d to %d\n", |
| 3238 | netdev->mtu, new_mtu); |
| 3239 | netdev->mtu = new_mtu; |
| 3240 | |
| 3241 | if (netif_running(netdev)) |
| 3242 | igb_up(adapter); |
| 3243 | else |
| 3244 | igb_reset(adapter); |
| 3245 | |
| 3246 | clear_bit(__IGB_RESETTING, &adapter->state); |
| 3247 | |
| 3248 | return 0; |
| 3249 | } |
| 3250 | |
| 3251 | /** |
| 3252 | * igb_update_stats - Update the board statistics counters |
| 3253 | * @adapter: board private structure |
| 3254 | **/ |
| 3255 | |
| 3256 | void igb_update_stats(struct igb_adapter *adapter) |
| 3257 | { |
| 3258 | struct e1000_hw *hw = &adapter->hw; |
| 3259 | struct pci_dev *pdev = adapter->pdev; |
| 3260 | u16 phy_tmp; |
| 3261 | |
| 3262 | #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF |
| 3263 | |
| 3264 | /* |
| 3265 | * Prevent stats update while adapter is being reset, or if the pci |
| 3266 | * connection is down. |
| 3267 | */ |
| 3268 | if (adapter->link_speed == 0) |
| 3269 | return; |
| 3270 | if (pci_channel_offline(pdev)) |
| 3271 | return; |
| 3272 | |
| 3273 | adapter->stats.crcerrs += rd32(E1000_CRCERRS); |
| 3274 | adapter->stats.gprc += rd32(E1000_GPRC); |
| 3275 | adapter->stats.gorc += rd32(E1000_GORCL); |
| 3276 | rd32(E1000_GORCH); /* clear GORCL */ |
| 3277 | adapter->stats.bprc += rd32(E1000_BPRC); |
| 3278 | adapter->stats.mprc += rd32(E1000_MPRC); |
| 3279 | adapter->stats.roc += rd32(E1000_ROC); |
| 3280 | |
| 3281 | adapter->stats.prc64 += rd32(E1000_PRC64); |
| 3282 | adapter->stats.prc127 += rd32(E1000_PRC127); |
| 3283 | adapter->stats.prc255 += rd32(E1000_PRC255); |
| 3284 | adapter->stats.prc511 += rd32(E1000_PRC511); |
| 3285 | adapter->stats.prc1023 += rd32(E1000_PRC1023); |
| 3286 | adapter->stats.prc1522 += rd32(E1000_PRC1522); |
| 3287 | adapter->stats.symerrs += rd32(E1000_SYMERRS); |
| 3288 | adapter->stats.sec += rd32(E1000_SEC); |
| 3289 | |
| 3290 | adapter->stats.mpc += rd32(E1000_MPC); |
| 3291 | adapter->stats.scc += rd32(E1000_SCC); |
| 3292 | adapter->stats.ecol += rd32(E1000_ECOL); |
| 3293 | adapter->stats.mcc += rd32(E1000_MCC); |
| 3294 | adapter->stats.latecol += rd32(E1000_LATECOL); |
| 3295 | adapter->stats.dc += rd32(E1000_DC); |
| 3296 | adapter->stats.rlec += rd32(E1000_RLEC); |
| 3297 | adapter->stats.xonrxc += rd32(E1000_XONRXC); |
| 3298 | adapter->stats.xontxc += rd32(E1000_XONTXC); |
| 3299 | adapter->stats.xoffrxc += rd32(E1000_XOFFRXC); |
| 3300 | adapter->stats.xofftxc += rd32(E1000_XOFFTXC); |
| 3301 | adapter->stats.fcruc += rd32(E1000_FCRUC); |
| 3302 | adapter->stats.gptc += rd32(E1000_GPTC); |
| 3303 | adapter->stats.gotc += rd32(E1000_GOTCL); |
| 3304 | rd32(E1000_GOTCH); /* clear GOTCL */ |
| 3305 | adapter->stats.rnbc += rd32(E1000_RNBC); |
| 3306 | adapter->stats.ruc += rd32(E1000_RUC); |
| 3307 | adapter->stats.rfc += rd32(E1000_RFC); |
| 3308 | adapter->stats.rjc += rd32(E1000_RJC); |
| 3309 | adapter->stats.tor += rd32(E1000_TORH); |
| 3310 | adapter->stats.tot += rd32(E1000_TOTH); |
| 3311 | adapter->stats.tpr += rd32(E1000_TPR); |
| 3312 | |
| 3313 | adapter->stats.ptc64 += rd32(E1000_PTC64); |
| 3314 | adapter->stats.ptc127 += rd32(E1000_PTC127); |
| 3315 | adapter->stats.ptc255 += rd32(E1000_PTC255); |
| 3316 | adapter->stats.ptc511 += rd32(E1000_PTC511); |
| 3317 | adapter->stats.ptc1023 += rd32(E1000_PTC1023); |
| 3318 | adapter->stats.ptc1522 += rd32(E1000_PTC1522); |
| 3319 | |
| 3320 | adapter->stats.mptc += rd32(E1000_MPTC); |
| 3321 | adapter->stats.bptc += rd32(E1000_BPTC); |
| 3322 | |
| 3323 | /* used for adaptive IFS */ |
| 3324 | |
| 3325 | hw->mac.tx_packet_delta = rd32(E1000_TPT); |
| 3326 | adapter->stats.tpt += hw->mac.tx_packet_delta; |
| 3327 | hw->mac.collision_delta = rd32(E1000_COLC); |
| 3328 | adapter->stats.colc += hw->mac.collision_delta; |
| 3329 | |
| 3330 | adapter->stats.algnerrc += rd32(E1000_ALGNERRC); |
| 3331 | adapter->stats.rxerrc += rd32(E1000_RXERRC); |
| 3332 | adapter->stats.tncrs += rd32(E1000_TNCRS); |
| 3333 | adapter->stats.tsctc += rd32(E1000_TSCTC); |
| 3334 | adapter->stats.tsctfc += rd32(E1000_TSCTFC); |
| 3335 | |
| 3336 | adapter->stats.iac += rd32(E1000_IAC); |
| 3337 | adapter->stats.icrxoc += rd32(E1000_ICRXOC); |
| 3338 | adapter->stats.icrxptc += rd32(E1000_ICRXPTC); |
| 3339 | adapter->stats.icrxatc += rd32(E1000_ICRXATC); |
| 3340 | adapter->stats.ictxptc += rd32(E1000_ICTXPTC); |
| 3341 | adapter->stats.ictxatc += rd32(E1000_ICTXATC); |
| 3342 | adapter->stats.ictxqec += rd32(E1000_ICTXQEC); |
| 3343 | adapter->stats.ictxqmtc += rd32(E1000_ICTXQMTC); |
| 3344 | adapter->stats.icrxdmtc += rd32(E1000_ICRXDMTC); |
| 3345 | |
| 3346 | /* Fill out the OS statistics structure */ |
| 3347 | adapter->net_stats.multicast = adapter->stats.mprc; |
| 3348 | adapter->net_stats.collisions = adapter->stats.colc; |
| 3349 | |
| 3350 | /* Rx Errors */ |
| 3351 | |
| 3352 | /* RLEC on some newer hardware can be incorrect so build |
| 3353 | * our own version based on RUC and ROC */ |
| 3354 | adapter->net_stats.rx_errors = adapter->stats.rxerrc + |
| 3355 | adapter->stats.crcerrs + adapter->stats.algnerrc + |
| 3356 | adapter->stats.ruc + adapter->stats.roc + |
| 3357 | adapter->stats.cexterr; |
| 3358 | adapter->net_stats.rx_length_errors = adapter->stats.ruc + |
| 3359 | adapter->stats.roc; |
| 3360 | adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs; |
| 3361 | adapter->net_stats.rx_frame_errors = adapter->stats.algnerrc; |
| 3362 | adapter->net_stats.rx_missed_errors = adapter->stats.mpc; |
| 3363 | |
| 3364 | /* Tx Errors */ |
| 3365 | adapter->net_stats.tx_errors = adapter->stats.ecol + |
| 3366 | adapter->stats.latecol; |
| 3367 | adapter->net_stats.tx_aborted_errors = adapter->stats.ecol; |
| 3368 | adapter->net_stats.tx_window_errors = adapter->stats.latecol; |
| 3369 | adapter->net_stats.tx_carrier_errors = adapter->stats.tncrs; |
| 3370 | |
| 3371 | /* Tx Dropped needs to be maintained elsewhere */ |
| 3372 | |
| 3373 | /* Phy Stats */ |
| 3374 | if (hw->phy.media_type == e1000_media_type_copper) { |
| 3375 | if ((adapter->link_speed == SPEED_1000) && |
Alexander Duyck | f5f4cf0 | 2008-11-21 21:30:24 -0800 | [diff] [blame] | 3376 | (!igb_read_phy_reg(hw, PHY_1000T_STATUS, |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3377 | &phy_tmp))) { |
| 3378 | phy_tmp &= PHY_IDLE_ERROR_COUNT_MASK; |
| 3379 | adapter->phy_stats.idle_errors += phy_tmp; |
| 3380 | } |
| 3381 | } |
| 3382 | |
| 3383 | /* Management Stats */ |
| 3384 | adapter->stats.mgptc += rd32(E1000_MGTPTC); |
| 3385 | adapter->stats.mgprc += rd32(E1000_MGTPRC); |
| 3386 | adapter->stats.mgpdc += rd32(E1000_MGTPDC); |
| 3387 | } |
| 3388 | |
| 3389 | |
| 3390 | static irqreturn_t igb_msix_other(int irq, void *data) |
| 3391 | { |
| 3392 | struct net_device *netdev = data; |
| 3393 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 3394 | struct e1000_hw *hw = &adapter->hw; |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 3395 | u32 icr = rd32(E1000_ICR); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3396 | |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 3397 | /* reading ICR causes bit 31 of EICR to be cleared */ |
Alexander Duyck | dda0e08 | 2009-02-06 23:19:08 +0000 | [diff] [blame] | 3398 | |
| 3399 | if(icr & E1000_ICR_DOUTSYNC) { |
| 3400 | /* HW is reporting DMA is out of sync */ |
| 3401 | adapter->stats.doosync++; |
| 3402 | } |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 3403 | if (!(icr & E1000_ICR_LSC)) |
| 3404 | goto no_link_interrupt; |
| 3405 | hw->mac.get_link_status = 1; |
| 3406 | /* guard against interrupt when we're going down */ |
| 3407 | if (!test_bit(__IGB_DOWN, &adapter->state)) |
| 3408 | mod_timer(&adapter->watchdog_timer, jiffies + 1); |
Alexander Duyck | eebbbdb | 2009-02-06 23:19:29 +0000 | [diff] [blame] | 3409 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3410 | no_link_interrupt: |
Alexander Duyck | dda0e08 | 2009-02-06 23:19:08 +0000 | [diff] [blame] | 3411 | wr32(E1000_IMS, E1000_IMS_LSC | E1000_IMS_DOUTSYNC); |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 3412 | wr32(E1000_EIMS, adapter->eims_other); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3413 | |
| 3414 | return IRQ_HANDLED; |
| 3415 | } |
| 3416 | |
| 3417 | static irqreturn_t igb_msix_tx(int irq, void *data) |
| 3418 | { |
| 3419 | struct igb_ring *tx_ring = data; |
| 3420 | struct igb_adapter *adapter = tx_ring->adapter; |
| 3421 | struct e1000_hw *hw = &adapter->hw; |
| 3422 | |
Jeff Kirsher | 421e02f | 2008-10-17 11:08:31 -0700 | [diff] [blame] | 3423 | #ifdef CONFIG_IGB_DCA |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 3424 | if (adapter->flags & IGB_FLAG_DCA_ENABLED) |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 3425 | igb_update_tx_dca(tx_ring); |
| 3426 | #endif |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3427 | tx_ring->total_bytes = 0; |
| 3428 | tx_ring->total_packets = 0; |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 3429 | |
| 3430 | /* auto mask will automatically reenable the interrupt when we write |
| 3431 | * EICS */ |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 3432 | if (!igb_clean_tx_irq(tx_ring)) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3433 | /* Ring was not completely cleaned, so fire another interrupt */ |
| 3434 | wr32(E1000_EICS, tx_ring->eims_value); |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 3435 | else |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3436 | wr32(E1000_EIMS, tx_ring->eims_value); |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 3437 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3438 | return IRQ_HANDLED; |
| 3439 | } |
| 3440 | |
Alexander Duyck | 6eb5a7f | 2008-07-08 15:14:44 -0700 | [diff] [blame] | 3441 | static void igb_write_itr(struct igb_ring *ring) |
| 3442 | { |
| 3443 | struct e1000_hw *hw = &ring->adapter->hw; |
| 3444 | if ((ring->adapter->itr_setting & 3) && ring->set_itr) { |
| 3445 | switch (hw->mac.type) { |
| 3446 | case e1000_82576: |
| 3447 | wr32(ring->itr_register, |
| 3448 | ring->itr_val | |
| 3449 | 0x80000000); |
| 3450 | break; |
| 3451 | default: |
| 3452 | wr32(ring->itr_register, |
| 3453 | ring->itr_val | |
| 3454 | (ring->itr_val << 16)); |
| 3455 | break; |
| 3456 | } |
| 3457 | ring->set_itr = 0; |
| 3458 | } |
| 3459 | } |
| 3460 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3461 | static irqreturn_t igb_msix_rx(int irq, void *data) |
| 3462 | { |
| 3463 | struct igb_ring *rx_ring = data; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3464 | |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 3465 | /* Write the ITR value calculated at the end of the |
| 3466 | * previous interrupt. |
| 3467 | */ |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3468 | |
Alexander Duyck | 6eb5a7f | 2008-07-08 15:14:44 -0700 | [diff] [blame] | 3469 | igb_write_itr(rx_ring); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3470 | |
Ben Hutchings | 288379f | 2009-01-19 16:43:59 -0800 | [diff] [blame] | 3471 | if (napi_schedule_prep(&rx_ring->napi)) |
| 3472 | __napi_schedule(&rx_ring->napi); |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 3473 | |
Jeff Kirsher | 421e02f | 2008-10-17 11:08:31 -0700 | [diff] [blame] | 3474 | #ifdef CONFIG_IGB_DCA |
David S. Miller | 8d25332 | 2008-12-26 15:13:55 -0800 | [diff] [blame] | 3475 | if (rx_ring->adapter->flags & IGB_FLAG_DCA_ENABLED) |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 3476 | igb_update_rx_dca(rx_ring); |
| 3477 | #endif |
| 3478 | return IRQ_HANDLED; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3479 | } |
| 3480 | |
Jeff Kirsher | 421e02f | 2008-10-17 11:08:31 -0700 | [diff] [blame] | 3481 | #ifdef CONFIG_IGB_DCA |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 3482 | static void igb_update_rx_dca(struct igb_ring *rx_ring) |
| 3483 | { |
| 3484 | u32 dca_rxctrl; |
| 3485 | struct igb_adapter *adapter = rx_ring->adapter; |
| 3486 | struct e1000_hw *hw = &adapter->hw; |
| 3487 | int cpu = get_cpu(); |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 3488 | int q = rx_ring->reg_idx; |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 3489 | |
| 3490 | if (rx_ring->cpu != cpu) { |
| 3491 | dca_rxctrl = rd32(E1000_DCA_RXCTRL(q)); |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 3492 | if (hw->mac.type == e1000_82576) { |
| 3493 | dca_rxctrl &= ~E1000_DCA_RXCTRL_CPUID_MASK_82576; |
| 3494 | dca_rxctrl |= dca_get_tag(cpu) << |
| 3495 | E1000_DCA_RXCTRL_CPUID_SHIFT; |
| 3496 | } else { |
| 3497 | dca_rxctrl &= ~E1000_DCA_RXCTRL_CPUID_MASK; |
| 3498 | dca_rxctrl |= dca_get_tag(cpu); |
| 3499 | } |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 3500 | dca_rxctrl |= E1000_DCA_RXCTRL_DESC_DCA_EN; |
| 3501 | dca_rxctrl |= E1000_DCA_RXCTRL_HEAD_DCA_EN; |
| 3502 | dca_rxctrl |= E1000_DCA_RXCTRL_DATA_DCA_EN; |
| 3503 | wr32(E1000_DCA_RXCTRL(q), dca_rxctrl); |
| 3504 | rx_ring->cpu = cpu; |
| 3505 | } |
| 3506 | put_cpu(); |
| 3507 | } |
| 3508 | |
| 3509 | static void igb_update_tx_dca(struct igb_ring *tx_ring) |
| 3510 | { |
| 3511 | u32 dca_txctrl; |
| 3512 | struct igb_adapter *adapter = tx_ring->adapter; |
| 3513 | struct e1000_hw *hw = &adapter->hw; |
| 3514 | int cpu = get_cpu(); |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 3515 | int q = tx_ring->reg_idx; |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 3516 | |
| 3517 | if (tx_ring->cpu != cpu) { |
| 3518 | dca_txctrl = rd32(E1000_DCA_TXCTRL(q)); |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 3519 | if (hw->mac.type == e1000_82576) { |
| 3520 | dca_txctrl &= ~E1000_DCA_TXCTRL_CPUID_MASK_82576; |
| 3521 | dca_txctrl |= dca_get_tag(cpu) << |
| 3522 | E1000_DCA_TXCTRL_CPUID_SHIFT; |
| 3523 | } else { |
| 3524 | dca_txctrl &= ~E1000_DCA_TXCTRL_CPUID_MASK; |
| 3525 | dca_txctrl |= dca_get_tag(cpu); |
| 3526 | } |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 3527 | dca_txctrl |= E1000_DCA_TXCTRL_DESC_DCA_EN; |
| 3528 | wr32(E1000_DCA_TXCTRL(q), dca_txctrl); |
| 3529 | tx_ring->cpu = cpu; |
| 3530 | } |
| 3531 | put_cpu(); |
| 3532 | } |
| 3533 | |
| 3534 | static void igb_setup_dca(struct igb_adapter *adapter) |
| 3535 | { |
| 3536 | int i; |
| 3537 | |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 3538 | if (!(adapter->flags & IGB_FLAG_DCA_ENABLED)) |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 3539 | return; |
| 3540 | |
| 3541 | for (i = 0; i < adapter->num_tx_queues; i++) { |
| 3542 | adapter->tx_ring[i].cpu = -1; |
| 3543 | igb_update_tx_dca(&adapter->tx_ring[i]); |
| 3544 | } |
| 3545 | for (i = 0; i < adapter->num_rx_queues; i++) { |
| 3546 | adapter->rx_ring[i].cpu = -1; |
| 3547 | igb_update_rx_dca(&adapter->rx_ring[i]); |
| 3548 | } |
| 3549 | } |
| 3550 | |
| 3551 | static int __igb_notify_dca(struct device *dev, void *data) |
| 3552 | { |
| 3553 | struct net_device *netdev = dev_get_drvdata(dev); |
| 3554 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 3555 | struct e1000_hw *hw = &adapter->hw; |
| 3556 | unsigned long event = *(unsigned long *)data; |
| 3557 | |
| 3558 | switch (event) { |
| 3559 | case DCA_PROVIDER_ADD: |
| 3560 | /* if already enabled, don't do it again */ |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 3561 | if (adapter->flags & IGB_FLAG_DCA_ENABLED) |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 3562 | break; |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 3563 | /* Always use CB2 mode, difference is masked |
| 3564 | * in the CB driver. */ |
| 3565 | wr32(E1000_DCA_CTRL, 2); |
| 3566 | if (dca_add_requester(dev) == 0) { |
Alexander Duyck | bbd98fe | 2009-01-31 00:52:30 -0800 | [diff] [blame] | 3567 | adapter->flags |= IGB_FLAG_DCA_ENABLED; |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 3568 | dev_info(&adapter->pdev->dev, "DCA enabled\n"); |
| 3569 | igb_setup_dca(adapter); |
| 3570 | break; |
| 3571 | } |
| 3572 | /* Fall Through since DCA is disabled. */ |
| 3573 | case DCA_PROVIDER_REMOVE: |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 3574 | if (adapter->flags & IGB_FLAG_DCA_ENABLED) { |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 3575 | /* without this a class_device is left |
| 3576 | * hanging around in the sysfs model */ |
| 3577 | dca_remove_requester(dev); |
| 3578 | dev_info(&adapter->pdev->dev, "DCA disabled\n"); |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 3579 | adapter->flags &= ~IGB_FLAG_DCA_ENABLED; |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 3580 | wr32(E1000_DCA_CTRL, 1); |
| 3581 | } |
| 3582 | break; |
| 3583 | } |
Alexander Duyck | bbd98fe | 2009-01-31 00:52:30 -0800 | [diff] [blame] | 3584 | |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 3585 | return 0; |
| 3586 | } |
| 3587 | |
| 3588 | static int igb_notify_dca(struct notifier_block *nb, unsigned long event, |
| 3589 | void *p) |
| 3590 | { |
| 3591 | int ret_val; |
| 3592 | |
| 3593 | ret_val = driver_for_each_device(&igb_driver.driver, NULL, &event, |
| 3594 | __igb_notify_dca); |
| 3595 | |
| 3596 | return ret_val ? NOTIFY_BAD : NOTIFY_DONE; |
| 3597 | } |
Jeff Kirsher | 421e02f | 2008-10-17 11:08:31 -0700 | [diff] [blame] | 3598 | #endif /* CONFIG_IGB_DCA */ |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3599 | |
| 3600 | /** |
| 3601 | * igb_intr_msi - Interrupt Handler |
| 3602 | * @irq: interrupt number |
| 3603 | * @data: pointer to a network interface device structure |
| 3604 | **/ |
| 3605 | static irqreturn_t igb_intr_msi(int irq, void *data) |
| 3606 | { |
| 3607 | struct net_device *netdev = data; |
| 3608 | struct igb_adapter *adapter = netdev_priv(netdev); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3609 | struct e1000_hw *hw = &adapter->hw; |
| 3610 | /* read ICR disables interrupts using IAM */ |
| 3611 | u32 icr = rd32(E1000_ICR); |
| 3612 | |
Alexander Duyck | 6eb5a7f | 2008-07-08 15:14:44 -0700 | [diff] [blame] | 3613 | igb_write_itr(adapter->rx_ring); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3614 | |
Alexander Duyck | dda0e08 | 2009-02-06 23:19:08 +0000 | [diff] [blame] | 3615 | if(icr & E1000_ICR_DOUTSYNC) { |
| 3616 | /* HW is reporting DMA is out of sync */ |
| 3617 | adapter->stats.doosync++; |
| 3618 | } |
| 3619 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3620 | if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) { |
| 3621 | hw->mac.get_link_status = 1; |
| 3622 | if (!test_bit(__IGB_DOWN, &adapter->state)) |
| 3623 | mod_timer(&adapter->watchdog_timer, jiffies + 1); |
| 3624 | } |
| 3625 | |
Ben Hutchings | 288379f | 2009-01-19 16:43:59 -0800 | [diff] [blame] | 3626 | napi_schedule(&adapter->rx_ring[0].napi); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3627 | |
| 3628 | return IRQ_HANDLED; |
| 3629 | } |
| 3630 | |
| 3631 | /** |
Alexander Duyck | 4a3c643 | 2009-02-06 23:20:49 +0000 | [diff] [blame] | 3632 | * igb_intr - Legacy Interrupt Handler |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3633 | * @irq: interrupt number |
| 3634 | * @data: pointer to a network interface device structure |
| 3635 | **/ |
| 3636 | static irqreturn_t igb_intr(int irq, void *data) |
| 3637 | { |
| 3638 | struct net_device *netdev = data; |
| 3639 | struct igb_adapter *adapter = netdev_priv(netdev); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3640 | struct e1000_hw *hw = &adapter->hw; |
| 3641 | /* Interrupt Auto-Mask...upon reading ICR, interrupts are masked. No |
| 3642 | * need for the IMC write */ |
| 3643 | u32 icr = rd32(E1000_ICR); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3644 | if (!icr) |
| 3645 | return IRQ_NONE; /* Not our interrupt */ |
| 3646 | |
Alexander Duyck | 6eb5a7f | 2008-07-08 15:14:44 -0700 | [diff] [blame] | 3647 | igb_write_itr(adapter->rx_ring); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3648 | |
| 3649 | /* IMS will not auto-mask if INT_ASSERTED is not set, and if it is |
| 3650 | * not set, then the adapter didn't send an interrupt */ |
| 3651 | if (!(icr & E1000_ICR_INT_ASSERTED)) |
| 3652 | return IRQ_NONE; |
| 3653 | |
Alexander Duyck | dda0e08 | 2009-02-06 23:19:08 +0000 | [diff] [blame] | 3654 | if(icr & E1000_ICR_DOUTSYNC) { |
| 3655 | /* HW is reporting DMA is out of sync */ |
| 3656 | adapter->stats.doosync++; |
| 3657 | } |
| 3658 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3659 | if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) { |
| 3660 | hw->mac.get_link_status = 1; |
| 3661 | /* guard against interrupt when we're going down */ |
| 3662 | if (!test_bit(__IGB_DOWN, &adapter->state)) |
| 3663 | mod_timer(&adapter->watchdog_timer, jiffies + 1); |
| 3664 | } |
| 3665 | |
Ben Hutchings | 288379f | 2009-01-19 16:43:59 -0800 | [diff] [blame] | 3666 | napi_schedule(&adapter->rx_ring[0].napi); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3667 | |
| 3668 | return IRQ_HANDLED; |
| 3669 | } |
| 3670 | |
| 3671 | /** |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 3672 | * igb_poll - NAPI Rx polling callback |
| 3673 | * @napi: napi polling structure |
| 3674 | * @budget: count of how many packets we should handle |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3675 | **/ |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 3676 | static int igb_poll(struct napi_struct *napi, int budget) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3677 | { |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 3678 | struct igb_ring *rx_ring = container_of(napi, struct igb_ring, napi); |
| 3679 | struct igb_adapter *adapter = rx_ring->adapter; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3680 | struct net_device *netdev = adapter->netdev; |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 3681 | int tx_clean_complete, work_done = 0; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3682 | |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 3683 | /* this poll routine only supports one tx and one rx queue */ |
Jeff Kirsher | 421e02f | 2008-10-17 11:08:31 -0700 | [diff] [blame] | 3684 | #ifdef CONFIG_IGB_DCA |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 3685 | if (adapter->flags & IGB_FLAG_DCA_ENABLED) |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 3686 | igb_update_tx_dca(&adapter->tx_ring[0]); |
| 3687 | #endif |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 3688 | tx_clean_complete = igb_clean_tx_irq(&adapter->tx_ring[0]); |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 3689 | |
Jeff Kirsher | 421e02f | 2008-10-17 11:08:31 -0700 | [diff] [blame] | 3690 | #ifdef CONFIG_IGB_DCA |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 3691 | if (adapter->flags & IGB_FLAG_DCA_ENABLED) |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 3692 | igb_update_rx_dca(&adapter->rx_ring[0]); |
| 3693 | #endif |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 3694 | igb_clean_rx_irq_adv(&adapter->rx_ring[0], &work_done, budget); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3695 | |
| 3696 | /* If no Tx and not enough Rx work done, exit the polling mode */ |
| 3697 | if ((tx_clean_complete && (work_done < budget)) || |
| 3698 | !netif_running(netdev)) { |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3699 | if (adapter->itr_setting & 3) |
Alexander Duyck | 6eb5a7f | 2008-07-08 15:14:44 -0700 | [diff] [blame] | 3700 | igb_set_itr(adapter); |
Ben Hutchings | 288379f | 2009-01-19 16:43:59 -0800 | [diff] [blame] | 3701 | napi_complete(napi); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3702 | if (!test_bit(__IGB_DOWN, &adapter->state)) |
| 3703 | igb_irq_enable(adapter); |
| 3704 | return 0; |
| 3705 | } |
| 3706 | |
| 3707 | return 1; |
| 3708 | } |
| 3709 | |
| 3710 | static int igb_clean_rx_ring_msix(struct napi_struct *napi, int budget) |
| 3711 | { |
| 3712 | struct igb_ring *rx_ring = container_of(napi, struct igb_ring, napi); |
| 3713 | struct igb_adapter *adapter = rx_ring->adapter; |
| 3714 | struct e1000_hw *hw = &adapter->hw; |
| 3715 | struct net_device *netdev = adapter->netdev; |
| 3716 | int work_done = 0; |
| 3717 | |
Jeff Kirsher | 421e02f | 2008-10-17 11:08:31 -0700 | [diff] [blame] | 3718 | #ifdef CONFIG_IGB_DCA |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 3719 | if (adapter->flags & IGB_FLAG_DCA_ENABLED) |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 3720 | igb_update_rx_dca(rx_ring); |
| 3721 | #endif |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 3722 | igb_clean_rx_irq_adv(rx_ring, &work_done, budget); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3723 | |
| 3724 | |
| 3725 | /* If not enough Rx work done, exit the polling mode */ |
| 3726 | if ((work_done == 0) || !netif_running(netdev)) { |
Ben Hutchings | 288379f | 2009-01-19 16:43:59 -0800 | [diff] [blame] | 3727 | napi_complete(napi); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3728 | |
Alexander Duyck | 6eb5a7f | 2008-07-08 15:14:44 -0700 | [diff] [blame] | 3729 | if (adapter->itr_setting & 3) { |
| 3730 | if (adapter->num_rx_queues == 1) |
| 3731 | igb_set_itr(adapter); |
| 3732 | else |
| 3733 | igb_update_ring_itr(rx_ring); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3734 | } |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 3735 | |
| 3736 | if (!test_bit(__IGB_DOWN, &adapter->state)) |
| 3737 | wr32(E1000_EIMS, rx_ring->eims_value); |
| 3738 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3739 | return 0; |
| 3740 | } |
| 3741 | |
| 3742 | return 1; |
| 3743 | } |
Al Viro | 6d8126f | 2008-03-16 22:23:24 +0000 | [diff] [blame] | 3744 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3745 | /** |
| 3746 | * igb_clean_tx_irq - Reclaim resources after transmit completes |
| 3747 | * @adapter: board private structure |
| 3748 | * returns true if ring is completely cleaned |
| 3749 | **/ |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 3750 | static bool igb_clean_tx_irq(struct igb_ring *tx_ring) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3751 | { |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 3752 | struct igb_adapter *adapter = tx_ring->adapter; |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 3753 | struct net_device *netdev = adapter->netdev; |
Alexander Duyck | 0e014cb | 2008-12-26 01:33:18 -0800 | [diff] [blame] | 3754 | struct e1000_hw *hw = &adapter->hw; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3755 | struct igb_buffer *buffer_info; |
| 3756 | struct sk_buff *skb; |
Alexander Duyck | 0e014cb | 2008-12-26 01:33:18 -0800 | [diff] [blame] | 3757 | union e1000_adv_tx_desc *tx_desc, *eop_desc; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3758 | unsigned int total_bytes = 0, total_packets = 0; |
Alexander Duyck | 0e014cb | 2008-12-26 01:33:18 -0800 | [diff] [blame] | 3759 | unsigned int i, eop, count = 0; |
| 3760 | bool cleaned = false; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3761 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3762 | i = tx_ring->next_to_clean; |
Alexander Duyck | 0e014cb | 2008-12-26 01:33:18 -0800 | [diff] [blame] | 3763 | eop = tx_ring->buffer_info[i].next_to_watch; |
| 3764 | eop_desc = E1000_TX_DESC_ADV(*tx_ring, eop); |
| 3765 | |
| 3766 | while ((eop_desc->wb.status & cpu_to_le32(E1000_TXD_STAT_DD)) && |
| 3767 | (count < tx_ring->count)) { |
| 3768 | for (cleaned = false; !cleaned; count++) { |
| 3769 | tx_desc = E1000_TX_DESC_ADV(*tx_ring, i); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3770 | buffer_info = &tx_ring->buffer_info[i]; |
Alexander Duyck | 0e014cb | 2008-12-26 01:33:18 -0800 | [diff] [blame] | 3771 | cleaned = (i == eop); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3772 | skb = buffer_info->skb; |
| 3773 | |
| 3774 | if (skb) { |
| 3775 | unsigned int segs, bytecount; |
| 3776 | /* gso_segs is currently only valid for tcp */ |
| 3777 | segs = skb_shinfo(skb)->gso_segs ?: 1; |
| 3778 | /* multiply data chunks by size of headers */ |
| 3779 | bytecount = ((segs - 1) * skb_headlen(skb)) + |
| 3780 | skb->len; |
| 3781 | total_packets += segs; |
| 3782 | total_bytes += bytecount; |
| 3783 | } |
| 3784 | |
| 3785 | igb_unmap_and_free_tx_resource(adapter, buffer_info); |
Alexander Duyck | 0e014cb | 2008-12-26 01:33:18 -0800 | [diff] [blame] | 3786 | tx_desc->wb.status = 0; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3787 | |
| 3788 | i++; |
| 3789 | if (i == tx_ring->count) |
| 3790 | i = 0; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3791 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3792 | |
Alexander Duyck | 0e014cb | 2008-12-26 01:33:18 -0800 | [diff] [blame] | 3793 | eop = tx_ring->buffer_info[i].next_to_watch; |
| 3794 | eop_desc = E1000_TX_DESC_ADV(*tx_ring, eop); |
| 3795 | } |
| 3796 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3797 | tx_ring->next_to_clean = i; |
| 3798 | |
Alexander Duyck | fc7d345 | 2008-08-26 04:25:08 -0700 | [diff] [blame] | 3799 | if (unlikely(count && |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3800 | netif_carrier_ok(netdev) && |
| 3801 | IGB_DESC_UNUSED(tx_ring) >= IGB_TX_QUEUE_WAKE)) { |
| 3802 | /* Make sure that anybody stopping the queue after this |
| 3803 | * sees the new next_to_clean. |
| 3804 | */ |
| 3805 | smp_mb(); |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 3806 | if (__netif_subqueue_stopped(netdev, tx_ring->queue_index) && |
| 3807 | !(test_bit(__IGB_DOWN, &adapter->state))) { |
| 3808 | netif_wake_subqueue(netdev, tx_ring->queue_index); |
| 3809 | ++adapter->restart_queue; |
| 3810 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3811 | } |
| 3812 | |
| 3813 | if (tx_ring->detect_tx_hung) { |
| 3814 | /* Detect a transmit hang in hardware, this serializes the |
| 3815 | * check with the clearing of time_stamp and movement of i */ |
| 3816 | tx_ring->detect_tx_hung = false; |
| 3817 | if (tx_ring->buffer_info[i].time_stamp && |
| 3818 | time_after(jiffies, tx_ring->buffer_info[i].time_stamp + |
| 3819 | (adapter->tx_timeout_factor * HZ)) |
| 3820 | && !(rd32(E1000_STATUS) & |
| 3821 | E1000_STATUS_TXOFF)) { |
| 3822 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3823 | /* detected Tx unit hang */ |
| 3824 | dev_err(&adapter->pdev->dev, |
| 3825 | "Detected Tx Unit Hang\n" |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 3826 | " Tx Queue <%d>\n" |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3827 | " TDH <%x>\n" |
| 3828 | " TDT <%x>\n" |
| 3829 | " next_to_use <%x>\n" |
| 3830 | " next_to_clean <%x>\n" |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3831 | "buffer_info[next_to_clean]\n" |
| 3832 | " time_stamp <%lx>\n" |
Alexander Duyck | 0e014cb | 2008-12-26 01:33:18 -0800 | [diff] [blame] | 3833 | " next_to_watch <%x>\n" |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3834 | " jiffies <%lx>\n" |
| 3835 | " desc.status <%x>\n", |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 3836 | tx_ring->queue_index, |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3837 | readl(adapter->hw.hw_addr + tx_ring->head), |
| 3838 | readl(adapter->hw.hw_addr + tx_ring->tail), |
| 3839 | tx_ring->next_to_use, |
| 3840 | tx_ring->next_to_clean, |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3841 | tx_ring->buffer_info[i].time_stamp, |
Alexander Duyck | 0e014cb | 2008-12-26 01:33:18 -0800 | [diff] [blame] | 3842 | eop, |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3843 | jiffies, |
Alexander Duyck | 0e014cb | 2008-12-26 01:33:18 -0800 | [diff] [blame] | 3844 | eop_desc->wb.status); |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 3845 | netif_stop_subqueue(netdev, tx_ring->queue_index); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3846 | } |
| 3847 | } |
| 3848 | tx_ring->total_bytes += total_bytes; |
| 3849 | tx_ring->total_packets += total_packets; |
Alexander Duyck | e21ed35 | 2008-07-08 15:07:24 -0700 | [diff] [blame] | 3850 | tx_ring->tx_stats.bytes += total_bytes; |
| 3851 | tx_ring->tx_stats.packets += total_packets; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3852 | adapter->net_stats.tx_bytes += total_bytes; |
| 3853 | adapter->net_stats.tx_packets += total_packets; |
Alexander Duyck | 0e014cb | 2008-12-26 01:33:18 -0800 | [diff] [blame] | 3854 | return (count < tx_ring->count); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3855 | } |
| 3856 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3857 | /** |
| 3858 | * igb_receive_skb - helper function to handle rx indications |
Alexander Duyck | eebbbdb | 2009-02-06 23:19:29 +0000 | [diff] [blame] | 3859 | * @ring: pointer to receive ring receving this packet |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3860 | * @status: descriptor status field as written by hardware |
| 3861 | * @vlan: descriptor vlan field as written by hardware (no le/be conversion) |
| 3862 | * @skb: pointer to sk_buff to be indicated to stack |
| 3863 | **/ |
Alexander Duyck | d335252 | 2008-07-08 15:12:13 -0700 | [diff] [blame] | 3864 | static void igb_receive_skb(struct igb_ring *ring, u8 status, |
| 3865 | union e1000_adv_rx_desc * rx_desc, |
| 3866 | struct sk_buff *skb) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3867 | { |
Alexander Duyck | d335252 | 2008-07-08 15:12:13 -0700 | [diff] [blame] | 3868 | struct igb_adapter * adapter = ring->adapter; |
| 3869 | bool vlan_extracted = (adapter->vlgrp && (status & E1000_RXD_STAT_VP)); |
| 3870 | |
David S. Miller | 0c8dfc8 | 2009-01-27 16:22:32 -0800 | [diff] [blame] | 3871 | skb_record_rx_queue(skb, ring->queue_index); |
Herbert Xu | 5c0999b | 2009-01-19 15:20:57 -0800 | [diff] [blame] | 3872 | if (skb->ip_summed == CHECKSUM_UNNECESSARY) { |
Alexander Duyck | d335252 | 2008-07-08 15:12:13 -0700 | [diff] [blame] | 3873 | if (vlan_extracted) |
Herbert Xu | 5c0999b | 2009-01-19 15:20:57 -0800 | [diff] [blame] | 3874 | vlan_gro_receive(&ring->napi, adapter->vlgrp, |
| 3875 | le16_to_cpu(rx_desc->wb.upper.vlan), |
| 3876 | skb); |
Alexander Duyck | d335252 | 2008-07-08 15:12:13 -0700 | [diff] [blame] | 3877 | else |
Herbert Xu | 5c0999b | 2009-01-19 15:20:57 -0800 | [diff] [blame] | 3878 | napi_gro_receive(&ring->napi, skb); |
Alexander Duyck | d335252 | 2008-07-08 15:12:13 -0700 | [diff] [blame] | 3879 | } else { |
Alexander Duyck | d335252 | 2008-07-08 15:12:13 -0700 | [diff] [blame] | 3880 | if (vlan_extracted) |
| 3881 | vlan_hwaccel_receive_skb(skb, adapter->vlgrp, |
| 3882 | le16_to_cpu(rx_desc->wb.upper.vlan)); |
| 3883 | else |
Alexander Duyck | d335252 | 2008-07-08 15:12:13 -0700 | [diff] [blame] | 3884 | netif_receive_skb(skb); |
Alexander Duyck | d335252 | 2008-07-08 15:12:13 -0700 | [diff] [blame] | 3885 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3886 | } |
| 3887 | |
| 3888 | |
| 3889 | static inline void igb_rx_checksum_adv(struct igb_adapter *adapter, |
| 3890 | u32 status_err, struct sk_buff *skb) |
| 3891 | { |
| 3892 | skb->ip_summed = CHECKSUM_NONE; |
| 3893 | |
| 3894 | /* Ignore Checksum bit is set or checksum is disabled through ethtool */ |
| 3895 | if ((status_err & E1000_RXD_STAT_IXSM) || !adapter->rx_csum) |
| 3896 | return; |
| 3897 | /* TCP/UDP checksum error bit is set */ |
| 3898 | if (status_err & |
| 3899 | (E1000_RXDEXT_STATERR_TCPE | E1000_RXDEXT_STATERR_IPE)) { |
| 3900 | /* let the stack verify checksum errors */ |
| 3901 | adapter->hw_csum_err++; |
| 3902 | return; |
| 3903 | } |
| 3904 | /* It must be a TCP or UDP packet with a valid checksum */ |
| 3905 | if (status_err & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS)) |
| 3906 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
| 3907 | |
| 3908 | adapter->hw_csum_good++; |
| 3909 | } |
| 3910 | |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 3911 | static bool igb_clean_rx_irq_adv(struct igb_ring *rx_ring, |
| 3912 | int *work_done, int budget) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3913 | { |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 3914 | struct igb_adapter *adapter = rx_ring->adapter; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3915 | struct net_device *netdev = adapter->netdev; |
| 3916 | struct pci_dev *pdev = adapter->pdev; |
| 3917 | union e1000_adv_rx_desc *rx_desc , *next_rxd; |
| 3918 | struct igb_buffer *buffer_info , *next_buffer; |
| 3919 | struct sk_buff *skb; |
Alexander Duyck | bf36c1a | 2008-07-08 15:11:40 -0700 | [diff] [blame] | 3920 | unsigned int i; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3921 | u32 length, hlen, staterr; |
| 3922 | bool cleaned = false; |
| 3923 | int cleaned_count = 0; |
| 3924 | unsigned int total_bytes = 0, total_packets = 0; |
| 3925 | |
| 3926 | i = rx_ring->next_to_clean; |
Alexander Duyck | 69d3ca5 | 2009-02-06 23:15:04 +0000 | [diff] [blame] | 3927 | buffer_info = &rx_ring->buffer_info[i]; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3928 | rx_desc = E1000_RX_DESC_ADV(*rx_ring, i); |
| 3929 | staterr = le32_to_cpu(rx_desc->wb.upper.status_error); |
| 3930 | |
| 3931 | while (staterr & E1000_RXD_STAT_DD) { |
| 3932 | if (*work_done >= budget) |
| 3933 | break; |
| 3934 | (*work_done)++; |
Alexander Duyck | 69d3ca5 | 2009-02-06 23:15:04 +0000 | [diff] [blame] | 3935 | |
| 3936 | skb = buffer_info->skb; |
| 3937 | prefetch(skb->data - NET_IP_ALIGN); |
| 3938 | buffer_info->skb = NULL; |
| 3939 | |
| 3940 | i++; |
| 3941 | if (i == rx_ring->count) |
| 3942 | i = 0; |
| 3943 | next_rxd = E1000_RX_DESC_ADV(*rx_ring, i); |
| 3944 | prefetch(next_rxd); |
| 3945 | next_buffer = &rx_ring->buffer_info[i]; |
| 3946 | |
| 3947 | length = le16_to_cpu(rx_desc->wb.upper.length); |
| 3948 | cleaned = true; |
| 3949 | cleaned_count++; |
| 3950 | |
| 3951 | if (!adapter->rx_ps_hdr_size) { |
| 3952 | pci_unmap_single(pdev, buffer_info->dma, |
| 3953 | adapter->rx_buffer_len + |
| 3954 | NET_IP_ALIGN, |
| 3955 | PCI_DMA_FROMDEVICE); |
| 3956 | skb_put(skb, length); |
| 3957 | goto send_up; |
| 3958 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3959 | |
| 3960 | /* HW will not DMA in data larger than the given buffer, even |
| 3961 | * if it parses the (NFS, of course) header to be larger. In |
| 3962 | * that case, it fills the header buffer and spills the rest |
| 3963 | * into the page. |
| 3964 | */ |
Al Viro | 7deb07b | 2008-03-16 22:43:06 +0000 | [diff] [blame] | 3965 | hlen = (le16_to_cpu(rx_desc->wb.lower.lo_dword.hdr_info) & |
| 3966 | E1000_RXDADV_HDRBUFLEN_MASK) >> E1000_RXDADV_HDRBUFLEN_SHIFT; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3967 | if (hlen > adapter->rx_ps_hdr_size) |
| 3968 | hlen = adapter->rx_ps_hdr_size; |
| 3969 | |
Alexander Duyck | bf36c1a | 2008-07-08 15:11:40 -0700 | [diff] [blame] | 3970 | if (!skb_shinfo(skb)->nr_frags) { |
| 3971 | pci_unmap_single(pdev, buffer_info->dma, |
| 3972 | adapter->rx_ps_hdr_size + |
| 3973 | NET_IP_ALIGN, |
| 3974 | PCI_DMA_FROMDEVICE); |
| 3975 | skb_put(skb, hlen); |
| 3976 | } |
| 3977 | |
| 3978 | if (length) { |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3979 | pci_unmap_page(pdev, buffer_info->page_dma, |
Alexander Duyck | bf36c1a | 2008-07-08 15:11:40 -0700 | [diff] [blame] | 3980 | PAGE_SIZE / 2, PCI_DMA_FROMDEVICE); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3981 | buffer_info->page_dma = 0; |
Alexander Duyck | bf36c1a | 2008-07-08 15:11:40 -0700 | [diff] [blame] | 3982 | |
| 3983 | skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags++, |
| 3984 | buffer_info->page, |
| 3985 | buffer_info->page_offset, |
| 3986 | length); |
| 3987 | |
| 3988 | if ((adapter->rx_buffer_len > (PAGE_SIZE / 2)) || |
| 3989 | (page_count(buffer_info->page) != 1)) |
| 3990 | buffer_info->page = NULL; |
| 3991 | else |
| 3992 | get_page(buffer_info->page); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3993 | |
| 3994 | skb->len += length; |
| 3995 | skb->data_len += length; |
Alexander Duyck | bf36c1a | 2008-07-08 15:11:40 -0700 | [diff] [blame] | 3996 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3997 | skb->truesize += length; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3998 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3999 | |
Alexander Duyck | bf36c1a | 2008-07-08 15:11:40 -0700 | [diff] [blame] | 4000 | if (!(staterr & E1000_RXD_STAT_EOP)) { |
Alexander Duyck | b2d5653 | 2008-11-20 00:47:34 -0800 | [diff] [blame] | 4001 | buffer_info->skb = next_buffer->skb; |
| 4002 | buffer_info->dma = next_buffer->dma; |
| 4003 | next_buffer->skb = skb; |
| 4004 | next_buffer->dma = 0; |
Alexander Duyck | bf36c1a | 2008-07-08 15:11:40 -0700 | [diff] [blame] | 4005 | goto next_desc; |
| 4006 | } |
Alexander Duyck | 69d3ca5 | 2009-02-06 23:15:04 +0000 | [diff] [blame] | 4007 | send_up: |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4008 | if (staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) { |
| 4009 | dev_kfree_skb_irq(skb); |
| 4010 | goto next_desc; |
| 4011 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4012 | |
| 4013 | total_bytes += skb->len; |
| 4014 | total_packets++; |
| 4015 | |
| 4016 | igb_rx_checksum_adv(adapter, staterr, skb); |
| 4017 | |
| 4018 | skb->protocol = eth_type_trans(skb, netdev); |
| 4019 | |
Alexander Duyck | d335252 | 2008-07-08 15:12:13 -0700 | [diff] [blame] | 4020 | igb_receive_skb(rx_ring, staterr, rx_desc, skb); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4021 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4022 | next_desc: |
| 4023 | rx_desc->wb.upper.status_error = 0; |
| 4024 | |
| 4025 | /* return some buffers to hardware, one at a time is too slow */ |
| 4026 | if (cleaned_count >= IGB_RX_BUFFER_WRITE) { |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 4027 | igb_alloc_rx_buffers_adv(rx_ring, cleaned_count); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4028 | cleaned_count = 0; |
| 4029 | } |
| 4030 | |
| 4031 | /* use prefetched values */ |
| 4032 | rx_desc = next_rxd; |
| 4033 | buffer_info = next_buffer; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4034 | staterr = le32_to_cpu(rx_desc->wb.upper.status_error); |
| 4035 | } |
Alexander Duyck | bf36c1a | 2008-07-08 15:11:40 -0700 | [diff] [blame] | 4036 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4037 | rx_ring->next_to_clean = i; |
| 4038 | cleaned_count = IGB_DESC_UNUSED(rx_ring); |
| 4039 | |
| 4040 | if (cleaned_count) |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 4041 | igb_alloc_rx_buffers_adv(rx_ring, cleaned_count); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4042 | |
| 4043 | rx_ring->total_packets += total_packets; |
| 4044 | rx_ring->total_bytes += total_bytes; |
| 4045 | rx_ring->rx_stats.packets += total_packets; |
| 4046 | rx_ring->rx_stats.bytes += total_bytes; |
| 4047 | adapter->net_stats.rx_bytes += total_bytes; |
| 4048 | adapter->net_stats.rx_packets += total_packets; |
| 4049 | return cleaned; |
| 4050 | } |
| 4051 | |
| 4052 | |
| 4053 | /** |
| 4054 | * igb_alloc_rx_buffers_adv - Replace used receive buffers; packet split |
| 4055 | * @adapter: address of board private structure |
| 4056 | **/ |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 4057 | static void igb_alloc_rx_buffers_adv(struct igb_ring *rx_ring, |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4058 | int cleaned_count) |
| 4059 | { |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 4060 | struct igb_adapter *adapter = rx_ring->adapter; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4061 | struct net_device *netdev = adapter->netdev; |
| 4062 | struct pci_dev *pdev = adapter->pdev; |
| 4063 | union e1000_adv_rx_desc *rx_desc; |
| 4064 | struct igb_buffer *buffer_info; |
| 4065 | struct sk_buff *skb; |
| 4066 | unsigned int i; |
Alexander Duyck | db76176 | 2009-02-06 23:15:25 +0000 | [diff] [blame] | 4067 | int bufsz; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4068 | |
| 4069 | i = rx_ring->next_to_use; |
| 4070 | buffer_info = &rx_ring->buffer_info[i]; |
| 4071 | |
Alexander Duyck | db76176 | 2009-02-06 23:15:25 +0000 | [diff] [blame] | 4072 | if (adapter->rx_ps_hdr_size) |
| 4073 | bufsz = adapter->rx_ps_hdr_size; |
| 4074 | else |
| 4075 | bufsz = adapter->rx_buffer_len; |
| 4076 | bufsz += NET_IP_ALIGN; |
| 4077 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4078 | while (cleaned_count--) { |
| 4079 | rx_desc = E1000_RX_DESC_ADV(*rx_ring, i); |
| 4080 | |
Alexander Duyck | bf36c1a | 2008-07-08 15:11:40 -0700 | [diff] [blame] | 4081 | if (adapter->rx_ps_hdr_size && !buffer_info->page_dma) { |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4082 | if (!buffer_info->page) { |
Alexander Duyck | bf36c1a | 2008-07-08 15:11:40 -0700 | [diff] [blame] | 4083 | buffer_info->page = alloc_page(GFP_ATOMIC); |
| 4084 | if (!buffer_info->page) { |
| 4085 | adapter->alloc_rx_buff_failed++; |
| 4086 | goto no_buffers; |
| 4087 | } |
| 4088 | buffer_info->page_offset = 0; |
| 4089 | } else { |
| 4090 | buffer_info->page_offset ^= PAGE_SIZE / 2; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4091 | } |
| 4092 | buffer_info->page_dma = |
Alexander Duyck | db76176 | 2009-02-06 23:15:25 +0000 | [diff] [blame] | 4093 | pci_map_page(pdev, buffer_info->page, |
Alexander Duyck | bf36c1a | 2008-07-08 15:11:40 -0700 | [diff] [blame] | 4094 | buffer_info->page_offset, |
| 4095 | PAGE_SIZE / 2, |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4096 | PCI_DMA_FROMDEVICE); |
| 4097 | } |
| 4098 | |
| 4099 | if (!buffer_info->skb) { |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4100 | skb = netdev_alloc_skb(netdev, bufsz); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4101 | if (!skb) { |
| 4102 | adapter->alloc_rx_buff_failed++; |
| 4103 | goto no_buffers; |
| 4104 | } |
| 4105 | |
| 4106 | /* Make buffer alignment 2 beyond a 16 byte boundary |
| 4107 | * this will result in a 16 byte aligned IP header after |
| 4108 | * the 14 byte MAC header is removed |
| 4109 | */ |
| 4110 | skb_reserve(skb, NET_IP_ALIGN); |
| 4111 | |
| 4112 | buffer_info->skb = skb; |
| 4113 | buffer_info->dma = pci_map_single(pdev, skb->data, |
| 4114 | bufsz, |
| 4115 | PCI_DMA_FROMDEVICE); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4116 | } |
| 4117 | /* Refresh the desc even if buffer_addrs didn't change because |
| 4118 | * each write-back erases this info. */ |
| 4119 | if (adapter->rx_ps_hdr_size) { |
| 4120 | rx_desc->read.pkt_addr = |
| 4121 | cpu_to_le64(buffer_info->page_dma); |
| 4122 | rx_desc->read.hdr_addr = cpu_to_le64(buffer_info->dma); |
| 4123 | } else { |
| 4124 | rx_desc->read.pkt_addr = |
| 4125 | cpu_to_le64(buffer_info->dma); |
| 4126 | rx_desc->read.hdr_addr = 0; |
| 4127 | } |
| 4128 | |
| 4129 | i++; |
| 4130 | if (i == rx_ring->count) |
| 4131 | i = 0; |
| 4132 | buffer_info = &rx_ring->buffer_info[i]; |
| 4133 | } |
| 4134 | |
| 4135 | no_buffers: |
| 4136 | if (rx_ring->next_to_use != i) { |
| 4137 | rx_ring->next_to_use = i; |
| 4138 | if (i == 0) |
| 4139 | i = (rx_ring->count - 1); |
| 4140 | else |
| 4141 | i--; |
| 4142 | |
| 4143 | /* Force memory writes to complete before letting h/w |
| 4144 | * know there are new descriptors to fetch. (Only |
| 4145 | * applicable for weak-ordered memory model archs, |
| 4146 | * such as IA-64). */ |
| 4147 | wmb(); |
| 4148 | writel(i, adapter->hw.hw_addr + rx_ring->tail); |
| 4149 | } |
| 4150 | } |
| 4151 | |
| 4152 | /** |
| 4153 | * igb_mii_ioctl - |
| 4154 | * @netdev: |
| 4155 | * @ifreq: |
| 4156 | * @cmd: |
| 4157 | **/ |
| 4158 | static int igb_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) |
| 4159 | { |
| 4160 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 4161 | struct mii_ioctl_data *data = if_mii(ifr); |
| 4162 | |
| 4163 | if (adapter->hw.phy.media_type != e1000_media_type_copper) |
| 4164 | return -EOPNOTSUPP; |
| 4165 | |
| 4166 | switch (cmd) { |
| 4167 | case SIOCGMIIPHY: |
| 4168 | data->phy_id = adapter->hw.phy.addr; |
| 4169 | break; |
| 4170 | case SIOCGMIIREG: |
| 4171 | if (!capable(CAP_NET_ADMIN)) |
| 4172 | return -EPERM; |
Alexander Duyck | f5f4cf0 | 2008-11-21 21:30:24 -0800 | [diff] [blame] | 4173 | if (igb_read_phy_reg(&adapter->hw, data->reg_num & 0x1F, |
| 4174 | &data->val_out)) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4175 | return -EIO; |
| 4176 | break; |
| 4177 | case SIOCSMIIREG: |
| 4178 | default: |
| 4179 | return -EOPNOTSUPP; |
| 4180 | } |
| 4181 | return 0; |
| 4182 | } |
| 4183 | |
| 4184 | /** |
| 4185 | * igb_ioctl - |
| 4186 | * @netdev: |
| 4187 | * @ifreq: |
| 4188 | * @cmd: |
| 4189 | **/ |
| 4190 | static int igb_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) |
| 4191 | { |
| 4192 | switch (cmd) { |
| 4193 | case SIOCGMIIPHY: |
| 4194 | case SIOCGMIIREG: |
| 4195 | case SIOCSMIIREG: |
| 4196 | return igb_mii_ioctl(netdev, ifr, cmd); |
| 4197 | default: |
| 4198 | return -EOPNOTSUPP; |
| 4199 | } |
| 4200 | } |
| 4201 | |
| 4202 | static void igb_vlan_rx_register(struct net_device *netdev, |
| 4203 | struct vlan_group *grp) |
| 4204 | { |
| 4205 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 4206 | struct e1000_hw *hw = &adapter->hw; |
| 4207 | u32 ctrl, rctl; |
| 4208 | |
| 4209 | igb_irq_disable(adapter); |
| 4210 | adapter->vlgrp = grp; |
| 4211 | |
| 4212 | if (grp) { |
| 4213 | /* enable VLAN tag insert/strip */ |
| 4214 | ctrl = rd32(E1000_CTRL); |
| 4215 | ctrl |= E1000_CTRL_VME; |
| 4216 | wr32(E1000_CTRL, ctrl); |
| 4217 | |
| 4218 | /* enable VLAN receive filtering */ |
| 4219 | rctl = rd32(E1000_RCTL); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4220 | rctl &= ~E1000_RCTL_CFIEN; |
| 4221 | wr32(E1000_RCTL, rctl); |
| 4222 | igb_update_mng_vlan(adapter); |
| 4223 | wr32(E1000_RLPML, |
| 4224 | adapter->max_frame_size + VLAN_TAG_SIZE); |
| 4225 | } else { |
| 4226 | /* disable VLAN tag insert/strip */ |
| 4227 | ctrl = rd32(E1000_CTRL); |
| 4228 | ctrl &= ~E1000_CTRL_VME; |
| 4229 | wr32(E1000_CTRL, ctrl); |
| 4230 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4231 | if (adapter->mng_vlan_id != (u16)IGB_MNG_VLAN_NONE) { |
| 4232 | igb_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); |
| 4233 | adapter->mng_vlan_id = IGB_MNG_VLAN_NONE; |
| 4234 | } |
| 4235 | wr32(E1000_RLPML, |
| 4236 | adapter->max_frame_size); |
| 4237 | } |
| 4238 | |
| 4239 | if (!test_bit(__IGB_DOWN, &adapter->state)) |
| 4240 | igb_irq_enable(adapter); |
| 4241 | } |
| 4242 | |
| 4243 | static void igb_vlan_rx_add_vid(struct net_device *netdev, u16 vid) |
| 4244 | { |
| 4245 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 4246 | struct e1000_hw *hw = &adapter->hw; |
| 4247 | u32 vfta, index; |
| 4248 | |
Alexander Duyck | 28b0759 | 2009-02-06 23:20:31 +0000 | [diff] [blame] | 4249 | if ((hw->mng_cookie.status & |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4250 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN) && |
| 4251 | (vid == adapter->mng_vlan_id)) |
| 4252 | return; |
| 4253 | /* add VID to filter table */ |
| 4254 | index = (vid >> 5) & 0x7F; |
| 4255 | vfta = array_rd32(E1000_VFTA, index); |
| 4256 | vfta |= (1 << (vid & 0x1F)); |
| 4257 | igb_write_vfta(&adapter->hw, index, vfta); |
| 4258 | } |
| 4259 | |
| 4260 | static void igb_vlan_rx_kill_vid(struct net_device *netdev, u16 vid) |
| 4261 | { |
| 4262 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 4263 | struct e1000_hw *hw = &adapter->hw; |
| 4264 | u32 vfta, index; |
| 4265 | |
| 4266 | igb_irq_disable(adapter); |
| 4267 | vlan_group_set_device(adapter->vlgrp, vid, NULL); |
| 4268 | |
| 4269 | if (!test_bit(__IGB_DOWN, &adapter->state)) |
| 4270 | igb_irq_enable(adapter); |
| 4271 | |
| 4272 | if ((adapter->hw.mng_cookie.status & |
| 4273 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN) && |
| 4274 | (vid == adapter->mng_vlan_id)) { |
| 4275 | /* release control to f/w */ |
| 4276 | igb_release_hw_control(adapter); |
| 4277 | return; |
| 4278 | } |
| 4279 | |
| 4280 | /* remove VID from filter table */ |
| 4281 | index = (vid >> 5) & 0x7F; |
| 4282 | vfta = array_rd32(E1000_VFTA, index); |
| 4283 | vfta &= ~(1 << (vid & 0x1F)); |
| 4284 | igb_write_vfta(&adapter->hw, index, vfta); |
| 4285 | } |
| 4286 | |
| 4287 | static void igb_restore_vlan(struct igb_adapter *adapter) |
| 4288 | { |
| 4289 | igb_vlan_rx_register(adapter->netdev, adapter->vlgrp); |
| 4290 | |
| 4291 | if (adapter->vlgrp) { |
| 4292 | u16 vid; |
| 4293 | for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) { |
| 4294 | if (!vlan_group_get_device(adapter->vlgrp, vid)) |
| 4295 | continue; |
| 4296 | igb_vlan_rx_add_vid(adapter->netdev, vid); |
| 4297 | } |
| 4298 | } |
| 4299 | } |
| 4300 | |
| 4301 | int igb_set_spd_dplx(struct igb_adapter *adapter, u16 spddplx) |
| 4302 | { |
| 4303 | struct e1000_mac_info *mac = &adapter->hw.mac; |
| 4304 | |
| 4305 | mac->autoneg = 0; |
| 4306 | |
| 4307 | /* Fiber NICs only allow 1000 gbps Full duplex */ |
| 4308 | if ((adapter->hw.phy.media_type == e1000_media_type_fiber) && |
| 4309 | spddplx != (SPEED_1000 + DUPLEX_FULL)) { |
| 4310 | dev_err(&adapter->pdev->dev, |
| 4311 | "Unsupported Speed/Duplex configuration\n"); |
| 4312 | return -EINVAL; |
| 4313 | } |
| 4314 | |
| 4315 | switch (spddplx) { |
| 4316 | case SPEED_10 + DUPLEX_HALF: |
| 4317 | mac->forced_speed_duplex = ADVERTISE_10_HALF; |
| 4318 | break; |
| 4319 | case SPEED_10 + DUPLEX_FULL: |
| 4320 | mac->forced_speed_duplex = ADVERTISE_10_FULL; |
| 4321 | break; |
| 4322 | case SPEED_100 + DUPLEX_HALF: |
| 4323 | mac->forced_speed_duplex = ADVERTISE_100_HALF; |
| 4324 | break; |
| 4325 | case SPEED_100 + DUPLEX_FULL: |
| 4326 | mac->forced_speed_duplex = ADVERTISE_100_FULL; |
| 4327 | break; |
| 4328 | case SPEED_1000 + DUPLEX_FULL: |
| 4329 | mac->autoneg = 1; |
| 4330 | adapter->hw.phy.autoneg_advertised = ADVERTISE_1000_FULL; |
| 4331 | break; |
| 4332 | case SPEED_1000 + DUPLEX_HALF: /* not supported */ |
| 4333 | default: |
| 4334 | dev_err(&adapter->pdev->dev, |
| 4335 | "Unsupported Speed/Duplex configuration\n"); |
| 4336 | return -EINVAL; |
| 4337 | } |
| 4338 | return 0; |
| 4339 | } |
| 4340 | |
| 4341 | |
| 4342 | static int igb_suspend(struct pci_dev *pdev, pm_message_t state) |
| 4343 | { |
| 4344 | struct net_device *netdev = pci_get_drvdata(pdev); |
| 4345 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 4346 | struct e1000_hw *hw = &adapter->hw; |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 4347 | u32 ctrl, rctl, status; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4348 | u32 wufc = adapter->wol; |
| 4349 | #ifdef CONFIG_PM |
| 4350 | int retval = 0; |
| 4351 | #endif |
| 4352 | |
| 4353 | netif_device_detach(netdev); |
| 4354 | |
Alexander Duyck | a88f10e | 2008-07-08 15:13:38 -0700 | [diff] [blame] | 4355 | if (netif_running(netdev)) |
| 4356 | igb_close(netdev); |
| 4357 | |
| 4358 | igb_reset_interrupt_capability(adapter); |
| 4359 | |
| 4360 | igb_free_queues(adapter); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4361 | |
| 4362 | #ifdef CONFIG_PM |
| 4363 | retval = pci_save_state(pdev); |
| 4364 | if (retval) |
| 4365 | return retval; |
| 4366 | #endif |
| 4367 | |
| 4368 | status = rd32(E1000_STATUS); |
| 4369 | if (status & E1000_STATUS_LU) |
| 4370 | wufc &= ~E1000_WUFC_LNKC; |
| 4371 | |
| 4372 | if (wufc) { |
| 4373 | igb_setup_rctl(adapter); |
| 4374 | igb_set_multi(netdev); |
| 4375 | |
| 4376 | /* turn on all-multi mode if wake on multicast is enabled */ |
| 4377 | if (wufc & E1000_WUFC_MC) { |
| 4378 | rctl = rd32(E1000_RCTL); |
| 4379 | rctl |= E1000_RCTL_MPE; |
| 4380 | wr32(E1000_RCTL, rctl); |
| 4381 | } |
| 4382 | |
| 4383 | ctrl = rd32(E1000_CTRL); |
| 4384 | /* advertise wake from D3Cold */ |
| 4385 | #define E1000_CTRL_ADVD3WUC 0x00100000 |
| 4386 | /* phy power management enable */ |
| 4387 | #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000 |
| 4388 | ctrl |= E1000_CTRL_ADVD3WUC; |
| 4389 | wr32(E1000_CTRL, ctrl); |
| 4390 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4391 | /* Allow time for pending master requests to run */ |
| 4392 | igb_disable_pcie_master(&adapter->hw); |
| 4393 | |
| 4394 | wr32(E1000_WUC, E1000_WUC_PME_EN); |
| 4395 | wr32(E1000_WUFC, wufc); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4396 | } else { |
| 4397 | wr32(E1000_WUC, 0); |
| 4398 | wr32(E1000_WUFC, 0); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4399 | } |
| 4400 | |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 4401 | /* make sure adapter isn't asleep if manageability/wol is enabled */ |
| 4402 | if (wufc || adapter->en_mng_pt) { |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4403 | pci_enable_wake(pdev, PCI_D3hot, 1); |
| 4404 | pci_enable_wake(pdev, PCI_D3cold, 1); |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 4405 | } else { |
| 4406 | igb_shutdown_fiber_serdes_link_82575(hw); |
| 4407 | pci_enable_wake(pdev, PCI_D3hot, 0); |
| 4408 | pci_enable_wake(pdev, PCI_D3cold, 0); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4409 | } |
| 4410 | |
| 4411 | /* Release control of h/w to f/w. If f/w is AMT enabled, this |
| 4412 | * would have already happened in close and is redundant. */ |
| 4413 | igb_release_hw_control(adapter); |
| 4414 | |
| 4415 | pci_disable_device(pdev); |
| 4416 | |
| 4417 | pci_set_power_state(pdev, pci_choose_state(pdev, state)); |
| 4418 | |
| 4419 | return 0; |
| 4420 | } |
| 4421 | |
| 4422 | #ifdef CONFIG_PM |
| 4423 | static int igb_resume(struct pci_dev *pdev) |
| 4424 | { |
| 4425 | struct net_device *netdev = pci_get_drvdata(pdev); |
| 4426 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 4427 | struct e1000_hw *hw = &adapter->hw; |
| 4428 | u32 err; |
| 4429 | |
| 4430 | pci_set_power_state(pdev, PCI_D0); |
| 4431 | pci_restore_state(pdev); |
Taku Izumi | 42bfd33a | 2008-06-20 12:10:30 +0900 | [diff] [blame] | 4432 | |
Alexander Duyck | aed5dec | 2009-02-06 23:16:04 +0000 | [diff] [blame] | 4433 | err = pci_enable_device_mem(pdev); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4434 | if (err) { |
| 4435 | dev_err(&pdev->dev, |
| 4436 | "igb: Cannot enable PCI device from suspend\n"); |
| 4437 | return err; |
| 4438 | } |
| 4439 | pci_set_master(pdev); |
| 4440 | |
| 4441 | pci_enable_wake(pdev, PCI_D3hot, 0); |
| 4442 | pci_enable_wake(pdev, PCI_D3cold, 0); |
| 4443 | |
Alexander Duyck | a88f10e | 2008-07-08 15:13:38 -0700 | [diff] [blame] | 4444 | igb_set_interrupt_capability(adapter); |
| 4445 | |
| 4446 | if (igb_alloc_queues(adapter)) { |
| 4447 | dev_err(&pdev->dev, "Unable to allocate memory for queues\n"); |
| 4448 | return -ENOMEM; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4449 | } |
| 4450 | |
| 4451 | /* e1000_power_up_phy(adapter); */ |
| 4452 | |
| 4453 | igb_reset(adapter); |
Alexander Duyck | a8564f0 | 2009-02-06 23:21:10 +0000 | [diff] [blame] | 4454 | |
| 4455 | /* let the f/w know that the h/w is now under the control of the |
| 4456 | * driver. */ |
| 4457 | igb_get_hw_control(adapter); |
| 4458 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4459 | wr32(E1000_WUS, ~0); |
| 4460 | |
Alexander Duyck | a88f10e | 2008-07-08 15:13:38 -0700 | [diff] [blame] | 4461 | if (netif_running(netdev)) { |
| 4462 | err = igb_open(netdev); |
| 4463 | if (err) |
| 4464 | return err; |
| 4465 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4466 | |
| 4467 | netif_device_attach(netdev); |
| 4468 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4469 | return 0; |
| 4470 | } |
| 4471 | #endif |
| 4472 | |
| 4473 | static void igb_shutdown(struct pci_dev *pdev) |
| 4474 | { |
| 4475 | igb_suspend(pdev, PMSG_SUSPEND); |
| 4476 | } |
| 4477 | |
| 4478 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 4479 | /* |
| 4480 | * Polling 'interrupt' - used by things like netconsole to send skbs |
| 4481 | * without having to re-enable interrupts. It's not called while |
| 4482 | * the interrupt routine is executing. |
| 4483 | */ |
| 4484 | static void igb_netpoll(struct net_device *netdev) |
| 4485 | { |
| 4486 | struct igb_adapter *adapter = netdev_priv(netdev); |
Alexander Duyck | eebbbdb | 2009-02-06 23:19:29 +0000 | [diff] [blame] | 4487 | struct e1000_hw *hw = &adapter->hw; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4488 | int i; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4489 | |
Alexander Duyck | eebbbdb | 2009-02-06 23:19:29 +0000 | [diff] [blame] | 4490 | if (!adapter->msix_entries) { |
| 4491 | igb_irq_disable(adapter); |
| 4492 | napi_schedule(&adapter->rx_ring[0].napi); |
| 4493 | return; |
| 4494 | } |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 4495 | |
Alexander Duyck | eebbbdb | 2009-02-06 23:19:29 +0000 | [diff] [blame] | 4496 | for (i = 0; i < adapter->num_tx_queues; i++) { |
| 4497 | struct igb_ring *tx_ring = &adapter->tx_ring[i]; |
| 4498 | wr32(E1000_EIMC, tx_ring->eims_value); |
| 4499 | igb_clean_tx_irq(tx_ring); |
| 4500 | wr32(E1000_EIMS, tx_ring->eims_value); |
| 4501 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4502 | |
Alexander Duyck | eebbbdb | 2009-02-06 23:19:29 +0000 | [diff] [blame] | 4503 | for (i = 0; i < adapter->num_rx_queues; i++) { |
| 4504 | struct igb_ring *rx_ring = &adapter->rx_ring[i]; |
| 4505 | wr32(E1000_EIMC, rx_ring->eims_value); |
| 4506 | napi_schedule(&rx_ring->napi); |
| 4507 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4508 | } |
| 4509 | #endif /* CONFIG_NET_POLL_CONTROLLER */ |
| 4510 | |
| 4511 | /** |
| 4512 | * igb_io_error_detected - called when PCI error is detected |
| 4513 | * @pdev: Pointer to PCI device |
| 4514 | * @state: The current pci connection state |
| 4515 | * |
| 4516 | * This function is called after a PCI bus error affecting |
| 4517 | * this device has been detected. |
| 4518 | */ |
| 4519 | static pci_ers_result_t igb_io_error_detected(struct pci_dev *pdev, |
| 4520 | pci_channel_state_t state) |
| 4521 | { |
| 4522 | struct net_device *netdev = pci_get_drvdata(pdev); |
| 4523 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 4524 | |
| 4525 | netif_device_detach(netdev); |
| 4526 | |
| 4527 | if (netif_running(netdev)) |
| 4528 | igb_down(adapter); |
| 4529 | pci_disable_device(pdev); |
| 4530 | |
| 4531 | /* Request a slot slot reset. */ |
| 4532 | return PCI_ERS_RESULT_NEED_RESET; |
| 4533 | } |
| 4534 | |
| 4535 | /** |
| 4536 | * igb_io_slot_reset - called after the pci bus has been reset. |
| 4537 | * @pdev: Pointer to PCI device |
| 4538 | * |
| 4539 | * Restart the card from scratch, as if from a cold-boot. Implementation |
| 4540 | * resembles the first-half of the igb_resume routine. |
| 4541 | */ |
| 4542 | static pci_ers_result_t igb_io_slot_reset(struct pci_dev *pdev) |
| 4543 | { |
| 4544 | struct net_device *netdev = pci_get_drvdata(pdev); |
| 4545 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 4546 | struct e1000_hw *hw = &adapter->hw; |
Alexander Duyck | 40a914f | 2008-11-27 00:24:37 -0800 | [diff] [blame] | 4547 | pci_ers_result_t result; |
Taku Izumi | 42bfd33a | 2008-06-20 12:10:30 +0900 | [diff] [blame] | 4548 | int err; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4549 | |
Alexander Duyck | aed5dec | 2009-02-06 23:16:04 +0000 | [diff] [blame] | 4550 | if (pci_enable_device_mem(pdev)) { |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4551 | dev_err(&pdev->dev, |
| 4552 | "Cannot re-enable PCI device after reset.\n"); |
Alexander Duyck | 40a914f | 2008-11-27 00:24:37 -0800 | [diff] [blame] | 4553 | result = PCI_ERS_RESULT_DISCONNECT; |
| 4554 | } else { |
| 4555 | pci_set_master(pdev); |
| 4556 | pci_restore_state(pdev); |
| 4557 | |
| 4558 | pci_enable_wake(pdev, PCI_D3hot, 0); |
| 4559 | pci_enable_wake(pdev, PCI_D3cold, 0); |
| 4560 | |
| 4561 | igb_reset(adapter); |
| 4562 | wr32(E1000_WUS, ~0); |
| 4563 | result = PCI_ERS_RESULT_RECOVERED; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4564 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4565 | |
Jeff Kirsher | ea943d4 | 2008-12-11 20:34:19 -0800 | [diff] [blame] | 4566 | err = pci_cleanup_aer_uncorrect_error_status(pdev); |
| 4567 | if (err) { |
| 4568 | dev_err(&pdev->dev, "pci_cleanup_aer_uncorrect_error_status " |
| 4569 | "failed 0x%0x\n", err); |
| 4570 | /* non-fatal, continue */ |
| 4571 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4572 | |
Alexander Duyck | 40a914f | 2008-11-27 00:24:37 -0800 | [diff] [blame] | 4573 | return result; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4574 | } |
| 4575 | |
| 4576 | /** |
| 4577 | * igb_io_resume - called when traffic can start flowing again. |
| 4578 | * @pdev: Pointer to PCI device |
| 4579 | * |
| 4580 | * This callback is called when the error recovery driver tells us that |
| 4581 | * its OK to resume normal operation. Implementation resembles the |
| 4582 | * second-half of the igb_resume routine. |
| 4583 | */ |
| 4584 | static void igb_io_resume(struct pci_dev *pdev) |
| 4585 | { |
| 4586 | struct net_device *netdev = pci_get_drvdata(pdev); |
| 4587 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 4588 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4589 | if (netif_running(netdev)) { |
| 4590 | if (igb_up(adapter)) { |
| 4591 | dev_err(&pdev->dev, "igb_up failed after reset\n"); |
| 4592 | return; |
| 4593 | } |
| 4594 | } |
| 4595 | |
| 4596 | netif_device_attach(netdev); |
| 4597 | |
| 4598 | /* let the f/w know that the h/w is now under the control of the |
| 4599 | * driver. */ |
| 4600 | igb_get_hw_control(adapter); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4601 | } |
| 4602 | |
| 4603 | /* igb_main.c */ |