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> |
Patrick Ohly | c6cb090 | 2009-02-12 05:03:42 +0000 | [diff] [blame] | 37 | #include <linux/net_tstamp.h> |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 38 | #include <linux/mii.h> |
| 39 | #include <linux/ethtool.h> |
| 40 | #include <linux/if_vlan.h> |
| 41 | #include <linux/pci.h> |
Alexander Duyck | c54106b | 2008-10-16 21:26:57 -0700 | [diff] [blame] | 42 | #include <linux/pci-aspm.h> |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 43 | #include <linux/delay.h> |
| 44 | #include <linux/interrupt.h> |
| 45 | #include <linux/if_ether.h> |
Alexander Duyck | 40a914f | 2008-11-27 00:24:37 -0800 | [diff] [blame] | 46 | #include <linux/aer.h> |
Jeff Kirsher | 421e02f | 2008-10-17 11:08:31 -0700 | [diff] [blame] | 47 | #ifdef CONFIG_IGB_DCA |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 48 | #include <linux/dca.h> |
| 49 | #endif |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 50 | #include "igb.h" |
| 51 | |
Alexander Duyck | 86d5d38 | 2009-02-06 23:23:12 +0000 | [diff] [blame] | 52 | #define DRV_VERSION "1.3.16-k2" |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 53 | char igb_driver_name[] = "igb"; |
| 54 | char igb_driver_version[] = DRV_VERSION; |
| 55 | static const char igb_driver_string[] = |
| 56 | "Intel(R) Gigabit Ethernet Network Driver"; |
Alexander Duyck | 86d5d38 | 2009-02-06 23:23:12 +0000 | [diff] [blame] | 57 | static const char igb_copyright[] = "Copyright (c) 2007-2009 Intel Corporation."; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 58 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 59 | static const struct e1000_info *igb_info_tbl[] = { |
| 60 | [board_82575] = &e1000_82575_info, |
| 61 | }; |
| 62 | |
| 63 | static struct pci_device_id igb_pci_tbl[] = { |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 64 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576), board_82575 }, |
| 65 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_FIBER), board_82575 }, |
| 66 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_SERDES), board_82575 }, |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 67 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82575EB_COPPER), board_82575 }, |
| 68 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82575EB_FIBER_SERDES), board_82575 }, |
| 69 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82575GB_QUAD_COPPER), board_82575 }, |
| 70 | /* required last entry */ |
| 71 | {0, } |
| 72 | }; |
| 73 | |
| 74 | MODULE_DEVICE_TABLE(pci, igb_pci_tbl); |
| 75 | |
| 76 | void igb_reset(struct igb_adapter *); |
| 77 | static int igb_setup_all_tx_resources(struct igb_adapter *); |
| 78 | static int igb_setup_all_rx_resources(struct igb_adapter *); |
| 79 | static void igb_free_all_tx_resources(struct igb_adapter *); |
| 80 | static void igb_free_all_rx_resources(struct igb_adapter *); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 81 | void igb_update_stats(struct igb_adapter *); |
| 82 | static int igb_probe(struct pci_dev *, const struct pci_device_id *); |
| 83 | static void __devexit igb_remove(struct pci_dev *pdev); |
| 84 | static int igb_sw_init(struct igb_adapter *); |
| 85 | static int igb_open(struct net_device *); |
| 86 | static int igb_close(struct net_device *); |
| 87 | static void igb_configure_tx(struct igb_adapter *); |
| 88 | static void igb_configure_rx(struct igb_adapter *); |
| 89 | static void igb_setup_rctl(struct igb_adapter *); |
| 90 | static void igb_clean_all_tx_rings(struct igb_adapter *); |
| 91 | static void igb_clean_all_rx_rings(struct igb_adapter *); |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 92 | static void igb_clean_tx_ring(struct igb_ring *); |
| 93 | static void igb_clean_rx_ring(struct igb_ring *); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 94 | static void igb_set_multi(struct net_device *); |
| 95 | static void igb_update_phy_info(unsigned long); |
| 96 | static void igb_watchdog(unsigned long); |
| 97 | static void igb_watchdog_task(struct work_struct *); |
| 98 | static int igb_xmit_frame_ring_adv(struct sk_buff *, struct net_device *, |
| 99 | struct igb_ring *); |
| 100 | static int igb_xmit_frame_adv(struct sk_buff *skb, struct net_device *); |
| 101 | static struct net_device_stats *igb_get_stats(struct net_device *); |
| 102 | static int igb_change_mtu(struct net_device *, int); |
| 103 | static int igb_set_mac(struct net_device *, void *); |
| 104 | static irqreturn_t igb_intr(int irq, void *); |
| 105 | static irqreturn_t igb_intr_msi(int irq, void *); |
| 106 | static irqreturn_t igb_msix_other(int irq, void *); |
| 107 | static irqreturn_t igb_msix_rx(int irq, void *); |
| 108 | static irqreturn_t igb_msix_tx(int irq, void *); |
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 *); |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 125 | static void igb_ping_all_vfs(struct igb_adapter *); |
| 126 | static void igb_msg_task(struct igb_adapter *); |
| 127 | static int igb_rcv_msg_from_vf(struct igb_adapter *, u32); |
Alexander Duyck | e173952 | 2009-02-19 20:39:44 -0800 | [diff] [blame] | 128 | static inline void igb_set_rah_pool(struct e1000_hw *, int , int); |
| 129 | static void igb_set_mc_list_pools(struct igb_adapter *, int, u16); |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 130 | static void igb_vmm_control(struct igb_adapter *); |
Alexander Duyck | e173952 | 2009-02-19 20:39:44 -0800 | [diff] [blame] | 131 | static inline void igb_set_vmolr(struct e1000_hw *, int); |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 132 | static inline int igb_set_vf_rlpml(struct igb_adapter *, int, int); |
| 133 | static int igb_set_vf_mac(struct igb_adapter *adapter, int, unsigned char *); |
| 134 | static void igb_restore_vf_multicasts(struct igb_adapter *adapter); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 135 | |
| 136 | static int igb_suspend(struct pci_dev *, pm_message_t); |
| 137 | #ifdef CONFIG_PM |
| 138 | static int igb_resume(struct pci_dev *); |
| 139 | #endif |
| 140 | static void igb_shutdown(struct pci_dev *); |
Jeff Kirsher | 421e02f | 2008-10-17 11:08:31 -0700 | [diff] [blame] | 141 | #ifdef CONFIG_IGB_DCA |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 142 | static int igb_notify_dca(struct notifier_block *, unsigned long, void *); |
| 143 | static struct notifier_block dca_notifier = { |
| 144 | .notifier_call = igb_notify_dca, |
| 145 | .next = NULL, |
| 146 | .priority = 0 |
| 147 | }; |
| 148 | #endif |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 149 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 150 | /* for netdump / net console */ |
| 151 | static void igb_netpoll(struct net_device *); |
| 152 | #endif |
| 153 | |
Alexander Duyck | 3768011 | 2009-02-19 20:40:30 -0800 | [diff] [blame] | 154 | #ifdef CONFIG_PCI_IOV |
| 155 | static ssize_t igb_set_num_vfs(struct device *, struct device_attribute *, |
| 156 | const char *, size_t); |
| 157 | static ssize_t igb_show_num_vfs(struct device *, struct device_attribute *, |
| 158 | char *); |
| 159 | DEVICE_ATTR(num_vfs, S_IRUGO | S_IWUSR, igb_show_num_vfs, igb_set_num_vfs); |
| 160 | #endif |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 161 | static pci_ers_result_t igb_io_error_detected(struct pci_dev *, |
| 162 | pci_channel_state_t); |
| 163 | static pci_ers_result_t igb_io_slot_reset(struct pci_dev *); |
| 164 | static void igb_io_resume(struct pci_dev *); |
| 165 | |
| 166 | static struct pci_error_handlers igb_err_handler = { |
| 167 | .error_detected = igb_io_error_detected, |
| 168 | .slot_reset = igb_io_slot_reset, |
| 169 | .resume = igb_io_resume, |
| 170 | }; |
| 171 | |
| 172 | |
| 173 | static struct pci_driver igb_driver = { |
| 174 | .name = igb_driver_name, |
| 175 | .id_table = igb_pci_tbl, |
| 176 | .probe = igb_probe, |
| 177 | .remove = __devexit_p(igb_remove), |
| 178 | #ifdef CONFIG_PM |
| 179 | /* Power Managment Hooks */ |
| 180 | .suspend = igb_suspend, |
| 181 | .resume = igb_resume, |
| 182 | #endif |
| 183 | .shutdown = igb_shutdown, |
| 184 | .err_handler = &igb_err_handler |
| 185 | }; |
| 186 | |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 187 | static int global_quad_port_a; /* global quad port a indication */ |
| 188 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 189 | MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>"); |
| 190 | MODULE_DESCRIPTION("Intel(R) Gigabit Ethernet Network Driver"); |
| 191 | MODULE_LICENSE("GPL"); |
| 192 | MODULE_VERSION(DRV_VERSION); |
| 193 | |
Patrick Ohly | 38c845c | 2009-02-12 05:03:41 +0000 | [diff] [blame] | 194 | /** |
| 195 | * Scale the NIC clock cycle by a large factor so that |
| 196 | * relatively small clock corrections can be added or |
| 197 | * substracted at each clock tick. The drawbacks of a |
| 198 | * large factor are a) that the clock register overflows |
| 199 | * more quickly (not such a big deal) and b) that the |
| 200 | * increment per tick has to fit into 24 bits. |
| 201 | * |
| 202 | * Note that |
| 203 | * TIMINCA = IGB_TSYNC_CYCLE_TIME_IN_NANOSECONDS * |
| 204 | * IGB_TSYNC_SCALE |
| 205 | * TIMINCA += TIMINCA * adjustment [ppm] / 1e9 |
| 206 | * |
| 207 | * The base scale factor is intentionally a power of two |
| 208 | * so that the division in %struct timecounter can be done with |
| 209 | * a shift. |
| 210 | */ |
| 211 | #define IGB_TSYNC_SHIFT (19) |
| 212 | #define IGB_TSYNC_SCALE (1<<IGB_TSYNC_SHIFT) |
| 213 | |
| 214 | /** |
| 215 | * The duration of one clock cycle of the NIC. |
| 216 | * |
| 217 | * @todo This hard-coded value is part of the specification and might change |
| 218 | * in future hardware revisions. Add revision check. |
| 219 | */ |
| 220 | #define IGB_TSYNC_CYCLE_TIME_IN_NANOSECONDS 16 |
| 221 | |
| 222 | #if (IGB_TSYNC_SCALE * IGB_TSYNC_CYCLE_TIME_IN_NANOSECONDS) >= (1<<24) |
| 223 | # error IGB_TSYNC_SCALE and/or IGB_TSYNC_CYCLE_TIME_IN_NANOSECONDS are too large to fit into TIMINCA |
| 224 | #endif |
| 225 | |
| 226 | /** |
| 227 | * igb_read_clock - read raw cycle counter (to be used by time counter) |
| 228 | */ |
| 229 | static cycle_t igb_read_clock(const struct cyclecounter *tc) |
| 230 | { |
| 231 | struct igb_adapter *adapter = |
| 232 | container_of(tc, struct igb_adapter, cycles); |
| 233 | struct e1000_hw *hw = &adapter->hw; |
| 234 | u64 stamp; |
| 235 | |
| 236 | stamp = rd32(E1000_SYSTIML); |
| 237 | stamp |= (u64)rd32(E1000_SYSTIMH) << 32ULL; |
| 238 | |
| 239 | return stamp; |
| 240 | } |
| 241 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 242 | #ifdef DEBUG |
| 243 | /** |
| 244 | * igb_get_hw_dev_name - return device name string |
| 245 | * used by hardware layer to print debugging information |
| 246 | **/ |
| 247 | char *igb_get_hw_dev_name(struct e1000_hw *hw) |
| 248 | { |
| 249 | struct igb_adapter *adapter = hw->back; |
| 250 | return adapter->netdev->name; |
| 251 | } |
Patrick Ohly | 38c845c | 2009-02-12 05:03:41 +0000 | [diff] [blame] | 252 | |
| 253 | /** |
| 254 | * igb_get_time_str - format current NIC and system time as string |
| 255 | */ |
| 256 | static char *igb_get_time_str(struct igb_adapter *adapter, |
| 257 | char buffer[160]) |
| 258 | { |
| 259 | cycle_t hw = adapter->cycles.read(&adapter->cycles); |
| 260 | struct timespec nic = ns_to_timespec(timecounter_read(&adapter->clock)); |
| 261 | struct timespec sys; |
| 262 | struct timespec delta; |
| 263 | getnstimeofday(&sys); |
| 264 | |
| 265 | delta = timespec_sub(nic, sys); |
| 266 | |
| 267 | sprintf(buffer, |
Patrick Ohly | 33af6bc | 2009-02-12 05:03:43 +0000 | [diff] [blame] | 268 | "HW %llu, NIC %ld.%09lus, SYS %ld.%09lus, NIC-SYS %lds + %09luns", |
| 269 | hw, |
Patrick Ohly | 38c845c | 2009-02-12 05:03:41 +0000 | [diff] [blame] | 270 | (long)nic.tv_sec, nic.tv_nsec, |
| 271 | (long)sys.tv_sec, sys.tv_nsec, |
| 272 | (long)delta.tv_sec, delta.tv_nsec); |
| 273 | |
| 274 | return buffer; |
| 275 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 276 | #endif |
| 277 | |
| 278 | /** |
| 279 | * igb_init_module - Driver Registration Routine |
| 280 | * |
| 281 | * igb_init_module is the first routine called when the driver is |
| 282 | * loaded. All it does is register with the PCI subsystem. |
| 283 | **/ |
| 284 | static int __init igb_init_module(void) |
| 285 | { |
| 286 | int ret; |
| 287 | printk(KERN_INFO "%s - version %s\n", |
| 288 | igb_driver_string, igb_driver_version); |
| 289 | |
| 290 | printk(KERN_INFO "%s\n", igb_copyright); |
| 291 | |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 292 | global_quad_port_a = 0; |
| 293 | |
Jeff Kirsher | 421e02f | 2008-10-17 11:08:31 -0700 | [diff] [blame] | 294 | #ifdef CONFIG_IGB_DCA |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 295 | dca_register_notify(&dca_notifier); |
| 296 | #endif |
Alexander Duyck | bbd98fe | 2009-01-31 00:52:30 -0800 | [diff] [blame] | 297 | |
| 298 | ret = pci_register_driver(&igb_driver); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 299 | return ret; |
| 300 | } |
| 301 | |
| 302 | module_init(igb_init_module); |
| 303 | |
| 304 | /** |
| 305 | * igb_exit_module - Driver Exit Cleanup Routine |
| 306 | * |
| 307 | * igb_exit_module is called just before the driver is removed |
| 308 | * from memory. |
| 309 | **/ |
| 310 | static void __exit igb_exit_module(void) |
| 311 | { |
Jeff Kirsher | 421e02f | 2008-10-17 11:08:31 -0700 | [diff] [blame] | 312 | #ifdef CONFIG_IGB_DCA |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 313 | dca_unregister_notify(&dca_notifier); |
| 314 | #endif |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 315 | pci_unregister_driver(&igb_driver); |
| 316 | } |
| 317 | |
| 318 | module_exit(igb_exit_module); |
| 319 | |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 320 | #define Q_IDX_82576(i) (((i & 0x1) << 3) + (i >> 1)) |
| 321 | /** |
| 322 | * igb_cache_ring_register - Descriptor ring to register mapping |
| 323 | * @adapter: board private structure to initialize |
| 324 | * |
| 325 | * Once we know the feature-set enabled for the device, we'll cache |
| 326 | * the register offset the descriptor ring is assigned to. |
| 327 | **/ |
| 328 | static void igb_cache_ring_register(struct igb_adapter *adapter) |
| 329 | { |
| 330 | int i; |
Alexander Duyck | 1bfaf07 | 2009-02-19 20:39:23 -0800 | [diff] [blame] | 331 | unsigned int rbase_offset = adapter->vfs_allocated_count; |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 332 | |
| 333 | switch (adapter->hw.mac.type) { |
| 334 | case e1000_82576: |
| 335 | /* The queues are allocated for virtualization such that VF 0 |
| 336 | * is allocated queues 0 and 8, VF 1 queues 1 and 9, etc. |
| 337 | * In order to avoid collision we start at the first free queue |
| 338 | * and continue consuming queues in the same sequence |
| 339 | */ |
| 340 | for (i = 0; i < adapter->num_rx_queues; i++) |
Alexander Duyck | 1bfaf07 | 2009-02-19 20:39:23 -0800 | [diff] [blame] | 341 | adapter->rx_ring[i].reg_idx = rbase_offset + |
| 342 | Q_IDX_82576(i); |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 343 | for (i = 0; i < adapter->num_tx_queues; i++) |
Alexander Duyck | 1bfaf07 | 2009-02-19 20:39:23 -0800 | [diff] [blame] | 344 | adapter->tx_ring[i].reg_idx = rbase_offset + |
| 345 | Q_IDX_82576(i); |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 346 | break; |
| 347 | case e1000_82575: |
| 348 | default: |
| 349 | for (i = 0; i < adapter->num_rx_queues; i++) |
| 350 | adapter->rx_ring[i].reg_idx = i; |
| 351 | for (i = 0; i < adapter->num_tx_queues; i++) |
| 352 | adapter->tx_ring[i].reg_idx = i; |
| 353 | break; |
| 354 | } |
| 355 | } |
| 356 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 357 | /** |
| 358 | * igb_alloc_queues - Allocate memory for all rings |
| 359 | * @adapter: board private structure to initialize |
| 360 | * |
| 361 | * We allocate one ring per queue at run-time since we don't know the |
| 362 | * number of queues at compile-time. |
| 363 | **/ |
| 364 | static int igb_alloc_queues(struct igb_adapter *adapter) |
| 365 | { |
| 366 | int i; |
| 367 | |
| 368 | adapter->tx_ring = kcalloc(adapter->num_tx_queues, |
| 369 | sizeof(struct igb_ring), GFP_KERNEL); |
| 370 | if (!adapter->tx_ring) |
| 371 | return -ENOMEM; |
| 372 | |
| 373 | adapter->rx_ring = kcalloc(adapter->num_rx_queues, |
| 374 | sizeof(struct igb_ring), GFP_KERNEL); |
| 375 | if (!adapter->rx_ring) { |
| 376 | kfree(adapter->tx_ring); |
| 377 | return -ENOMEM; |
| 378 | } |
| 379 | |
Alexander Duyck | 6eb5a7f | 2008-07-08 15:14:44 -0700 | [diff] [blame] | 380 | adapter->rx_ring->buddy = adapter->tx_ring; |
| 381 | |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 382 | for (i = 0; i < adapter->num_tx_queues; i++) { |
| 383 | struct igb_ring *ring = &(adapter->tx_ring[i]); |
Alexander Duyck | 68fd991 | 2008-11-20 00:48:10 -0800 | [diff] [blame] | 384 | ring->count = adapter->tx_ring_count; |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 385 | ring->adapter = adapter; |
| 386 | ring->queue_index = i; |
| 387 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 388 | for (i = 0; i < adapter->num_rx_queues; i++) { |
| 389 | struct igb_ring *ring = &(adapter->rx_ring[i]); |
Alexander Duyck | 68fd991 | 2008-11-20 00:48:10 -0800 | [diff] [blame] | 390 | ring->count = adapter->rx_ring_count; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 391 | ring->adapter = adapter; |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 392 | ring->queue_index = i; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 393 | ring->itr_register = E1000_ITR; |
| 394 | |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 395 | /* set a default napi handler for each rx_ring */ |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 396 | netif_napi_add(adapter->netdev, &ring->napi, igb_poll, 64); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 397 | } |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 398 | |
| 399 | igb_cache_ring_register(adapter); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 400 | return 0; |
| 401 | } |
| 402 | |
Alexander Duyck | a88f10e | 2008-07-08 15:13:38 -0700 | [diff] [blame] | 403 | static void igb_free_queues(struct igb_adapter *adapter) |
| 404 | { |
| 405 | int i; |
| 406 | |
| 407 | for (i = 0; i < adapter->num_rx_queues; i++) |
| 408 | netif_napi_del(&adapter->rx_ring[i].napi); |
| 409 | |
| 410 | kfree(adapter->tx_ring); |
| 411 | kfree(adapter->rx_ring); |
| 412 | } |
| 413 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 414 | #define IGB_N0_QUEUE -1 |
| 415 | static void igb_assign_vector(struct igb_adapter *adapter, int rx_queue, |
| 416 | int tx_queue, int msix_vector) |
| 417 | { |
| 418 | u32 msixbm = 0; |
| 419 | struct e1000_hw *hw = &adapter->hw; |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 420 | u32 ivar, index; |
| 421 | |
| 422 | switch (hw->mac.type) { |
| 423 | case e1000_82575: |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 424 | /* The 82575 assigns vectors using a bitmask, which matches the |
| 425 | bitmask for the EICR/EIMS/EIMC registers. To assign one |
| 426 | or more queues to a vector, we write the appropriate bits |
| 427 | into the MSIXBM register for that vector. */ |
| 428 | if (rx_queue > IGB_N0_QUEUE) { |
| 429 | msixbm = E1000_EICR_RX_QUEUE0 << rx_queue; |
| 430 | adapter->rx_ring[rx_queue].eims_value = msixbm; |
| 431 | } |
| 432 | if (tx_queue > IGB_N0_QUEUE) { |
| 433 | msixbm |= E1000_EICR_TX_QUEUE0 << tx_queue; |
| 434 | adapter->tx_ring[tx_queue].eims_value = |
| 435 | E1000_EICR_TX_QUEUE0 << tx_queue; |
| 436 | } |
| 437 | array_wr32(E1000_MSIXBM(0), msix_vector, msixbm); |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 438 | break; |
| 439 | case e1000_82576: |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 440 | /* 82576 uses a table-based method for assigning vectors. |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 441 | Each queue has a single entry in the table to which we write |
| 442 | a vector number along with a "valid" bit. Sadly, the layout |
| 443 | of the table is somewhat counterintuitive. */ |
| 444 | if (rx_queue > IGB_N0_QUEUE) { |
Alexander Duyck | 1bfaf07 | 2009-02-19 20:39:23 -0800 | [diff] [blame] | 445 | index = (rx_queue >> 1) + adapter->vfs_allocated_count; |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 446 | ivar = array_rd32(E1000_IVAR0, index); |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 447 | if (rx_queue & 0x1) { |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 448 | /* vector goes into third byte of register */ |
| 449 | ivar = ivar & 0xFF00FFFF; |
| 450 | ivar |= (msix_vector | E1000_IVAR_VALID) << 16; |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 451 | } else { |
| 452 | /* vector goes into low byte of register */ |
| 453 | ivar = ivar & 0xFFFFFF00; |
| 454 | ivar |= msix_vector | E1000_IVAR_VALID; |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 455 | } |
| 456 | adapter->rx_ring[rx_queue].eims_value= 1 << msix_vector; |
| 457 | array_wr32(E1000_IVAR0, index, ivar); |
| 458 | } |
| 459 | if (tx_queue > IGB_N0_QUEUE) { |
Alexander Duyck | 1bfaf07 | 2009-02-19 20:39:23 -0800 | [diff] [blame] | 460 | index = (tx_queue >> 1) + adapter->vfs_allocated_count; |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 461 | ivar = array_rd32(E1000_IVAR0, index); |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 462 | if (tx_queue & 0x1) { |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 463 | /* vector goes into high byte of register */ |
| 464 | ivar = ivar & 0x00FFFFFF; |
| 465 | ivar |= (msix_vector | E1000_IVAR_VALID) << 24; |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 466 | } else { |
| 467 | /* vector goes into second byte of register */ |
| 468 | ivar = ivar & 0xFFFF00FF; |
| 469 | ivar |= (msix_vector | E1000_IVAR_VALID) << 8; |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 470 | } |
| 471 | adapter->tx_ring[tx_queue].eims_value= 1 << msix_vector; |
| 472 | array_wr32(E1000_IVAR0, index, ivar); |
| 473 | } |
| 474 | break; |
| 475 | default: |
| 476 | BUG(); |
| 477 | break; |
| 478 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 479 | } |
| 480 | |
| 481 | /** |
| 482 | * igb_configure_msix - Configure MSI-X hardware |
| 483 | * |
| 484 | * igb_configure_msix sets up the hardware to properly |
| 485 | * generate MSI-X interrupts. |
| 486 | **/ |
| 487 | static void igb_configure_msix(struct igb_adapter *adapter) |
| 488 | { |
| 489 | u32 tmp; |
| 490 | int i, vector = 0; |
| 491 | struct e1000_hw *hw = &adapter->hw; |
| 492 | |
| 493 | adapter->eims_enable_mask = 0; |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 494 | if (hw->mac.type == e1000_82576) |
| 495 | /* Turn on MSI-X capability first, or our settings |
| 496 | * won't stick. And it will take days to debug. */ |
| 497 | wr32(E1000_GPIE, E1000_GPIE_MSIX_MODE | |
Alexander Duyck | eebbbdb | 2009-02-06 23:19:29 +0000 | [diff] [blame] | 498 | E1000_GPIE_PBA | E1000_GPIE_EIAME | |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 499 | E1000_GPIE_NSICR); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 500 | |
| 501 | for (i = 0; i < adapter->num_tx_queues; i++) { |
| 502 | struct igb_ring *tx_ring = &adapter->tx_ring[i]; |
| 503 | igb_assign_vector(adapter, IGB_N0_QUEUE, i, vector++); |
| 504 | adapter->eims_enable_mask |= tx_ring->eims_value; |
| 505 | if (tx_ring->itr_val) |
Alexander Duyck | 6eb5a7f | 2008-07-08 15:14:44 -0700 | [diff] [blame] | 506 | writel(tx_ring->itr_val, |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 507 | hw->hw_addr + tx_ring->itr_register); |
| 508 | else |
| 509 | writel(1, hw->hw_addr + tx_ring->itr_register); |
| 510 | } |
| 511 | |
| 512 | for (i = 0; i < adapter->num_rx_queues; i++) { |
| 513 | struct igb_ring *rx_ring = &adapter->rx_ring[i]; |
Harvey Harrison | 25ac3c2 | 2008-07-16 12:45:27 -0700 | [diff] [blame] | 514 | rx_ring->buddy = NULL; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 515 | igb_assign_vector(adapter, i, IGB_N0_QUEUE, vector++); |
| 516 | adapter->eims_enable_mask |= rx_ring->eims_value; |
| 517 | if (rx_ring->itr_val) |
Alexander Duyck | 6eb5a7f | 2008-07-08 15:14:44 -0700 | [diff] [blame] | 518 | writel(rx_ring->itr_val, |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 519 | hw->hw_addr + rx_ring->itr_register); |
| 520 | else |
| 521 | writel(1, hw->hw_addr + rx_ring->itr_register); |
| 522 | } |
| 523 | |
| 524 | |
| 525 | /* set vector for other causes, i.e. link changes */ |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 526 | switch (hw->mac.type) { |
| 527 | case e1000_82575: |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 528 | array_wr32(E1000_MSIXBM(0), vector++, |
| 529 | E1000_EIMS_OTHER); |
| 530 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 531 | tmp = rd32(E1000_CTRL_EXT); |
| 532 | /* enable MSI-X PBA support*/ |
| 533 | tmp |= E1000_CTRL_EXT_PBA_CLR; |
| 534 | |
| 535 | /* Auto-Mask interrupts upon ICR read. */ |
| 536 | tmp |= E1000_CTRL_EXT_EIAME; |
| 537 | tmp |= E1000_CTRL_EXT_IRCA; |
| 538 | |
| 539 | wr32(E1000_CTRL_EXT, tmp); |
| 540 | adapter->eims_enable_mask |= E1000_EIMS_OTHER; |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 541 | adapter->eims_other = E1000_EIMS_OTHER; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 542 | |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 543 | break; |
| 544 | |
| 545 | case e1000_82576: |
| 546 | tmp = (vector++ | E1000_IVAR_VALID) << 8; |
| 547 | wr32(E1000_IVAR_MISC, tmp); |
| 548 | |
| 549 | adapter->eims_enable_mask = (1 << (vector)) - 1; |
| 550 | adapter->eims_other = 1 << (vector - 1); |
| 551 | break; |
| 552 | default: |
| 553 | /* do nothing, since nothing else supports MSI-X */ |
| 554 | break; |
| 555 | } /* switch (hw->mac.type) */ |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 556 | wrfl(); |
| 557 | } |
| 558 | |
| 559 | /** |
| 560 | * igb_request_msix - Initialize MSI-X interrupts |
| 561 | * |
| 562 | * igb_request_msix allocates MSI-X vectors and requests interrupts from the |
| 563 | * kernel. |
| 564 | **/ |
| 565 | static int igb_request_msix(struct igb_adapter *adapter) |
| 566 | { |
| 567 | struct net_device *netdev = adapter->netdev; |
| 568 | int i, err = 0, vector = 0; |
| 569 | |
| 570 | vector = 0; |
| 571 | |
| 572 | for (i = 0; i < adapter->num_tx_queues; i++) { |
| 573 | struct igb_ring *ring = &(adapter->tx_ring[i]); |
Alexander Duyck | cb7b48f | 2008-12-05 15:08:03 -0800 | [diff] [blame] | 574 | sprintf(ring->name, "%s-tx-%d", netdev->name, i); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 575 | err = request_irq(adapter->msix_entries[vector].vector, |
| 576 | &igb_msix_tx, 0, ring->name, |
| 577 | &(adapter->tx_ring[i])); |
| 578 | if (err) |
| 579 | goto out; |
| 580 | ring->itr_register = E1000_EITR(0) + (vector << 2); |
Alexander Duyck | 6eb5a7f | 2008-07-08 15:14:44 -0700 | [diff] [blame] | 581 | ring->itr_val = 976; /* ~4000 ints/sec */ |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 582 | vector++; |
| 583 | } |
| 584 | for (i = 0; i < adapter->num_rx_queues; i++) { |
| 585 | struct igb_ring *ring = &(adapter->rx_ring[i]); |
| 586 | if (strlen(netdev->name) < (IFNAMSIZ - 5)) |
Alexander Duyck | cb7b48f | 2008-12-05 15:08:03 -0800 | [diff] [blame] | 587 | sprintf(ring->name, "%s-rx-%d", netdev->name, i); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 588 | else |
| 589 | memcpy(ring->name, netdev->name, IFNAMSIZ); |
| 590 | err = request_irq(adapter->msix_entries[vector].vector, |
| 591 | &igb_msix_rx, 0, ring->name, |
| 592 | &(adapter->rx_ring[i])); |
| 593 | if (err) |
| 594 | goto out; |
| 595 | ring->itr_register = E1000_EITR(0) + (vector << 2); |
| 596 | ring->itr_val = adapter->itr; |
| 597 | vector++; |
| 598 | } |
| 599 | |
| 600 | err = request_irq(adapter->msix_entries[vector].vector, |
| 601 | &igb_msix_other, 0, netdev->name, netdev); |
| 602 | if (err) |
| 603 | goto out; |
| 604 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 605 | igb_configure_msix(adapter); |
| 606 | return 0; |
| 607 | out: |
| 608 | return err; |
| 609 | } |
| 610 | |
| 611 | static void igb_reset_interrupt_capability(struct igb_adapter *adapter) |
| 612 | { |
| 613 | if (adapter->msix_entries) { |
| 614 | pci_disable_msix(adapter->pdev); |
| 615 | kfree(adapter->msix_entries); |
| 616 | adapter->msix_entries = NULL; |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 617 | } else if (adapter->flags & IGB_FLAG_HAS_MSI) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 618 | pci_disable_msi(adapter->pdev); |
| 619 | return; |
| 620 | } |
| 621 | |
| 622 | |
| 623 | /** |
| 624 | * igb_set_interrupt_capability - set MSI or MSI-X if supported |
| 625 | * |
| 626 | * Attempt to configure interrupts using the best available |
| 627 | * capabilities of the hardware and kernel. |
| 628 | **/ |
| 629 | static void igb_set_interrupt_capability(struct igb_adapter *adapter) |
| 630 | { |
| 631 | int err; |
| 632 | int numvecs, i; |
| 633 | |
Alexander Duyck | 83b7180 | 2009-02-06 23:15:45 +0000 | [diff] [blame] | 634 | /* Number of supported queues. */ |
| 635 | /* Having more queues than CPUs doesn't make sense. */ |
| 636 | adapter->num_rx_queues = min_t(u32, IGB_MAX_RX_QUEUES, num_online_cpus()); |
| 637 | adapter->num_tx_queues = min_t(u32, IGB_MAX_TX_QUEUES, num_online_cpus()); |
| 638 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 639 | numvecs = adapter->num_tx_queues + adapter->num_rx_queues + 1; |
| 640 | adapter->msix_entries = kcalloc(numvecs, sizeof(struct msix_entry), |
| 641 | GFP_KERNEL); |
| 642 | if (!adapter->msix_entries) |
| 643 | goto msi_only; |
| 644 | |
| 645 | for (i = 0; i < numvecs; i++) |
| 646 | adapter->msix_entries[i].entry = i; |
| 647 | |
| 648 | err = pci_enable_msix(adapter->pdev, |
| 649 | adapter->msix_entries, |
| 650 | numvecs); |
| 651 | if (err == 0) |
Alexander Duyck | 34a20e8 | 2008-08-26 04:25:13 -0700 | [diff] [blame] | 652 | goto out; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 653 | |
| 654 | igb_reset_interrupt_capability(adapter); |
| 655 | |
| 656 | /* If we can't do MSI-X, try MSI */ |
| 657 | msi_only: |
| 658 | adapter->num_rx_queues = 1; |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 659 | adapter->num_tx_queues = 1; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 660 | if (!pci_enable_msi(adapter->pdev)) |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 661 | adapter->flags |= IGB_FLAG_HAS_MSI; |
Alexander Duyck | 34a20e8 | 2008-08-26 04:25:13 -0700 | [diff] [blame] | 662 | out: |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 663 | /* Notify the stack of the (possibly) reduced Tx Queue count. */ |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 664 | adapter->netdev->real_num_tx_queues = adapter->num_tx_queues; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 665 | return; |
| 666 | } |
| 667 | |
| 668 | /** |
| 669 | * igb_request_irq - initialize interrupts |
| 670 | * |
| 671 | * Attempts to configure interrupts using the best available |
| 672 | * capabilities of the hardware and kernel. |
| 673 | **/ |
| 674 | static int igb_request_irq(struct igb_adapter *adapter) |
| 675 | { |
| 676 | struct net_device *netdev = adapter->netdev; |
| 677 | struct e1000_hw *hw = &adapter->hw; |
| 678 | int err = 0; |
| 679 | |
| 680 | if (adapter->msix_entries) { |
| 681 | err = igb_request_msix(adapter); |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 682 | if (!err) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 683 | goto request_done; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 684 | /* fall back to MSI */ |
| 685 | igb_reset_interrupt_capability(adapter); |
| 686 | if (!pci_enable_msi(adapter->pdev)) |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 687 | adapter->flags |= IGB_FLAG_HAS_MSI; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 688 | igb_free_all_tx_resources(adapter); |
| 689 | igb_free_all_rx_resources(adapter); |
| 690 | adapter->num_rx_queues = 1; |
| 691 | igb_alloc_queues(adapter); |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 692 | } else { |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 693 | switch (hw->mac.type) { |
| 694 | case e1000_82575: |
| 695 | wr32(E1000_MSIXBM(0), |
| 696 | (E1000_EICR_RX_QUEUE0 | E1000_EIMS_OTHER)); |
| 697 | break; |
| 698 | case e1000_82576: |
| 699 | wr32(E1000_IVAR0, E1000_IVAR_VALID); |
| 700 | break; |
| 701 | default: |
| 702 | break; |
| 703 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 704 | } |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 705 | |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 706 | if (adapter->flags & IGB_FLAG_HAS_MSI) { |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 707 | err = request_irq(adapter->pdev->irq, &igb_intr_msi, 0, |
| 708 | netdev->name, netdev); |
| 709 | if (!err) |
| 710 | goto request_done; |
| 711 | /* fall back to legacy interrupts */ |
| 712 | igb_reset_interrupt_capability(adapter); |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 713 | adapter->flags &= ~IGB_FLAG_HAS_MSI; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 714 | } |
| 715 | |
| 716 | err = request_irq(adapter->pdev->irq, &igb_intr, IRQF_SHARED, |
| 717 | netdev->name, netdev); |
| 718 | |
Andy Gospodarek | 6cb5e57 | 2008-02-15 14:05:25 -0800 | [diff] [blame] | 719 | if (err) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 720 | dev_err(&adapter->pdev->dev, "Error %d getting interrupt\n", |
| 721 | err); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 722 | |
| 723 | request_done: |
| 724 | return err; |
| 725 | } |
| 726 | |
| 727 | static void igb_free_irq(struct igb_adapter *adapter) |
| 728 | { |
| 729 | struct net_device *netdev = adapter->netdev; |
| 730 | |
| 731 | if (adapter->msix_entries) { |
| 732 | int vector = 0, i; |
| 733 | |
| 734 | for (i = 0; i < adapter->num_tx_queues; i++) |
| 735 | free_irq(adapter->msix_entries[vector++].vector, |
| 736 | &(adapter->tx_ring[i])); |
| 737 | for (i = 0; i < adapter->num_rx_queues; i++) |
| 738 | free_irq(adapter->msix_entries[vector++].vector, |
| 739 | &(adapter->rx_ring[i])); |
| 740 | |
| 741 | free_irq(adapter->msix_entries[vector++].vector, netdev); |
| 742 | return; |
| 743 | } |
| 744 | |
| 745 | free_irq(adapter->pdev->irq, netdev); |
| 746 | } |
| 747 | |
| 748 | /** |
| 749 | * igb_irq_disable - Mask off interrupt generation on the NIC |
| 750 | * @adapter: board private structure |
| 751 | **/ |
| 752 | static void igb_irq_disable(struct igb_adapter *adapter) |
| 753 | { |
| 754 | struct e1000_hw *hw = &adapter->hw; |
| 755 | |
| 756 | if (adapter->msix_entries) { |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 757 | wr32(E1000_EIAM, 0); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 758 | wr32(E1000_EIMC, ~0); |
| 759 | wr32(E1000_EIAC, 0); |
| 760 | } |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 761 | |
| 762 | wr32(E1000_IAM, 0); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 763 | wr32(E1000_IMC, ~0); |
| 764 | wrfl(); |
| 765 | synchronize_irq(adapter->pdev->irq); |
| 766 | } |
| 767 | |
| 768 | /** |
| 769 | * igb_irq_enable - Enable default interrupt generation settings |
| 770 | * @adapter: board private structure |
| 771 | **/ |
| 772 | static void igb_irq_enable(struct igb_adapter *adapter) |
| 773 | { |
| 774 | struct e1000_hw *hw = &adapter->hw; |
| 775 | |
| 776 | if (adapter->msix_entries) { |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 777 | wr32(E1000_EIAC, adapter->eims_enable_mask); |
| 778 | wr32(E1000_EIAM, adapter->eims_enable_mask); |
| 779 | wr32(E1000_EIMS, adapter->eims_enable_mask); |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 780 | if (adapter->vfs_allocated_count) |
| 781 | wr32(E1000_MBVFIMR, 0xFF); |
| 782 | wr32(E1000_IMS, (E1000_IMS_LSC | E1000_IMS_VMMB | |
| 783 | E1000_IMS_DOUTSYNC)); |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 784 | } else { |
| 785 | wr32(E1000_IMS, IMS_ENABLE_MASK); |
| 786 | wr32(E1000_IAM, IMS_ENABLE_MASK); |
| 787 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 788 | } |
| 789 | |
| 790 | static void igb_update_mng_vlan(struct igb_adapter *adapter) |
| 791 | { |
| 792 | struct net_device *netdev = adapter->netdev; |
| 793 | u16 vid = adapter->hw.mng_cookie.vlan_id; |
| 794 | u16 old_vid = adapter->mng_vlan_id; |
| 795 | if (adapter->vlgrp) { |
| 796 | if (!vlan_group_get_device(adapter->vlgrp, vid)) { |
| 797 | if (adapter->hw.mng_cookie.status & |
| 798 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN) { |
| 799 | igb_vlan_rx_add_vid(netdev, vid); |
| 800 | adapter->mng_vlan_id = vid; |
| 801 | } else |
| 802 | adapter->mng_vlan_id = IGB_MNG_VLAN_NONE; |
| 803 | |
| 804 | if ((old_vid != (u16)IGB_MNG_VLAN_NONE) && |
| 805 | (vid != old_vid) && |
| 806 | !vlan_group_get_device(adapter->vlgrp, old_vid)) |
| 807 | igb_vlan_rx_kill_vid(netdev, old_vid); |
| 808 | } else |
| 809 | adapter->mng_vlan_id = vid; |
| 810 | } |
| 811 | } |
| 812 | |
| 813 | /** |
| 814 | * igb_release_hw_control - release control of the h/w to f/w |
| 815 | * @adapter: address of board private structure |
| 816 | * |
| 817 | * igb_release_hw_control resets CTRL_EXT:DRV_LOAD bit. |
| 818 | * For ASF and Pass Through versions of f/w this means that the |
| 819 | * driver is no longer loaded. |
| 820 | * |
| 821 | **/ |
| 822 | static void igb_release_hw_control(struct igb_adapter *adapter) |
| 823 | { |
| 824 | struct e1000_hw *hw = &adapter->hw; |
| 825 | u32 ctrl_ext; |
| 826 | |
| 827 | /* Let firmware take over control of h/w */ |
| 828 | ctrl_ext = rd32(E1000_CTRL_EXT); |
| 829 | wr32(E1000_CTRL_EXT, |
| 830 | ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD); |
| 831 | } |
| 832 | |
| 833 | |
| 834 | /** |
| 835 | * igb_get_hw_control - get control of the h/w from f/w |
| 836 | * @adapter: address of board private structure |
| 837 | * |
| 838 | * igb_get_hw_control sets CTRL_EXT:DRV_LOAD bit. |
| 839 | * For ASF and Pass Through versions of f/w this means that |
| 840 | * the driver is loaded. |
| 841 | * |
| 842 | **/ |
| 843 | static void igb_get_hw_control(struct igb_adapter *adapter) |
| 844 | { |
| 845 | struct e1000_hw *hw = &adapter->hw; |
| 846 | u32 ctrl_ext; |
| 847 | |
| 848 | /* Let firmware know the driver has taken over */ |
| 849 | ctrl_ext = rd32(E1000_CTRL_EXT); |
| 850 | wr32(E1000_CTRL_EXT, |
| 851 | ctrl_ext | E1000_CTRL_EXT_DRV_LOAD); |
| 852 | } |
| 853 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 854 | /** |
| 855 | * igb_configure - configure the hardware for RX and TX |
| 856 | * @adapter: private board structure |
| 857 | **/ |
| 858 | static void igb_configure(struct igb_adapter *adapter) |
| 859 | { |
| 860 | struct net_device *netdev = adapter->netdev; |
| 861 | int i; |
| 862 | |
| 863 | igb_get_hw_control(adapter); |
| 864 | igb_set_multi(netdev); |
| 865 | |
| 866 | igb_restore_vlan(adapter); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 867 | |
| 868 | igb_configure_tx(adapter); |
| 869 | igb_setup_rctl(adapter); |
| 870 | igb_configure_rx(adapter); |
Alexander Duyck | 662d720 | 2008-06-27 11:00:29 -0700 | [diff] [blame] | 871 | |
| 872 | igb_rx_fifo_flush_82575(&adapter->hw); |
| 873 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 874 | /* call IGB_DESC_UNUSED which always leaves |
| 875 | * at least 1 descriptor unused to make sure |
| 876 | * next_to_use != next_to_clean */ |
| 877 | for (i = 0; i < adapter->num_rx_queues; i++) { |
| 878 | struct igb_ring *ring = &adapter->rx_ring[i]; |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 879 | igb_alloc_rx_buffers_adv(ring, IGB_DESC_UNUSED(ring)); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 880 | } |
| 881 | |
| 882 | |
| 883 | adapter->tx_queue_len = netdev->tx_queue_len; |
| 884 | } |
| 885 | |
| 886 | |
| 887 | /** |
| 888 | * igb_up - Open the interface and prepare it to handle traffic |
| 889 | * @adapter: board private structure |
| 890 | **/ |
| 891 | |
| 892 | int igb_up(struct igb_adapter *adapter) |
| 893 | { |
| 894 | struct e1000_hw *hw = &adapter->hw; |
| 895 | int i; |
| 896 | |
| 897 | /* hardware has been reset, we need to reload some things */ |
| 898 | igb_configure(adapter); |
| 899 | |
| 900 | clear_bit(__IGB_DOWN, &adapter->state); |
| 901 | |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 902 | for (i = 0; i < adapter->num_rx_queues; i++) |
| 903 | napi_enable(&adapter->rx_ring[i].napi); |
| 904 | if (adapter->msix_entries) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 905 | igb_configure_msix(adapter); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 906 | |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 907 | igb_vmm_control(adapter); |
Alexander Duyck | e173952 | 2009-02-19 20:39:44 -0800 | [diff] [blame] | 908 | igb_set_rah_pool(hw, adapter->vfs_allocated_count, 0); |
| 909 | igb_set_vmolr(hw, adapter->vfs_allocated_count); |
| 910 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 911 | /* Clear any pending interrupts. */ |
| 912 | rd32(E1000_ICR); |
| 913 | igb_irq_enable(adapter); |
| 914 | |
| 915 | /* Fire a link change interrupt to start the watchdog. */ |
| 916 | wr32(E1000_ICS, E1000_ICS_LSC); |
| 917 | return 0; |
| 918 | } |
| 919 | |
| 920 | void igb_down(struct igb_adapter *adapter) |
| 921 | { |
| 922 | struct e1000_hw *hw = &adapter->hw; |
| 923 | struct net_device *netdev = adapter->netdev; |
| 924 | u32 tctl, rctl; |
| 925 | int i; |
| 926 | |
| 927 | /* signal that we're down so the interrupt handler does not |
| 928 | * reschedule our watchdog timer */ |
| 929 | set_bit(__IGB_DOWN, &adapter->state); |
| 930 | |
| 931 | /* disable receives in the hardware */ |
| 932 | rctl = rd32(E1000_RCTL); |
| 933 | wr32(E1000_RCTL, rctl & ~E1000_RCTL_EN); |
| 934 | /* flush and sleep below */ |
| 935 | |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 936 | netif_tx_stop_all_queues(netdev); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 937 | |
| 938 | /* disable transmits in the hardware */ |
| 939 | tctl = rd32(E1000_TCTL); |
| 940 | tctl &= ~E1000_TCTL_EN; |
| 941 | wr32(E1000_TCTL, tctl); |
| 942 | /* flush both disables and wait for them to finish */ |
| 943 | wrfl(); |
| 944 | msleep(10); |
| 945 | |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 946 | for (i = 0; i < adapter->num_rx_queues; i++) |
| 947 | napi_disable(&adapter->rx_ring[i].napi); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 948 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 949 | igb_irq_disable(adapter); |
| 950 | |
| 951 | del_timer_sync(&adapter->watchdog_timer); |
| 952 | del_timer_sync(&adapter->phy_info_timer); |
| 953 | |
| 954 | netdev->tx_queue_len = adapter->tx_queue_len; |
| 955 | netif_carrier_off(netdev); |
Alexander Duyck | 04fe635 | 2009-02-06 23:22:32 +0000 | [diff] [blame] | 956 | |
| 957 | /* record the stats before reset*/ |
| 958 | igb_update_stats(adapter); |
| 959 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 960 | adapter->link_speed = 0; |
| 961 | adapter->link_duplex = 0; |
| 962 | |
Jeff Kirsher | 3023682 | 2008-06-24 17:01:15 -0700 | [diff] [blame] | 963 | if (!pci_channel_offline(adapter->pdev)) |
| 964 | igb_reset(adapter); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 965 | igb_clean_all_tx_rings(adapter); |
| 966 | igb_clean_all_rx_rings(adapter); |
| 967 | } |
| 968 | |
| 969 | void igb_reinit_locked(struct igb_adapter *adapter) |
| 970 | { |
| 971 | WARN_ON(in_interrupt()); |
| 972 | while (test_and_set_bit(__IGB_RESETTING, &adapter->state)) |
| 973 | msleep(1); |
| 974 | igb_down(adapter); |
| 975 | igb_up(adapter); |
| 976 | clear_bit(__IGB_RESETTING, &adapter->state); |
| 977 | } |
| 978 | |
| 979 | void igb_reset(struct igb_adapter *adapter) |
| 980 | { |
| 981 | struct e1000_hw *hw = &adapter->hw; |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 982 | struct e1000_mac_info *mac = &hw->mac; |
| 983 | struct e1000_fc_info *fc = &hw->fc; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 984 | u32 pba = 0, tx_space, min_tx_space, min_rx_space; |
| 985 | u16 hwm; |
| 986 | |
| 987 | /* Repartition Pba for greater than 9k mtu |
| 988 | * To take effect CTRL.RST is required. |
| 989 | */ |
Alexander Duyck | fa4dfae | 2009-02-06 23:21:31 +0000 | [diff] [blame] | 990 | switch (mac->type) { |
| 991 | case e1000_82576: |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 992 | pba = E1000_PBA_64K; |
Alexander Duyck | fa4dfae | 2009-02-06 23:21:31 +0000 | [diff] [blame] | 993 | break; |
| 994 | case e1000_82575: |
| 995 | default: |
| 996 | pba = E1000_PBA_34K; |
| 997 | break; |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 998 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 999 | |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 1000 | if ((adapter->max_frame_size > ETH_FRAME_LEN + ETH_FCS_LEN) && |
| 1001 | (mac->type < e1000_82576)) { |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1002 | /* adjust PBA for jumbo frames */ |
| 1003 | wr32(E1000_PBA, pba); |
| 1004 | |
| 1005 | /* To maintain wire speed transmits, the Tx FIFO should be |
| 1006 | * large enough to accommodate two full transmit packets, |
| 1007 | * rounded up to the next 1KB and expressed in KB. Likewise, |
| 1008 | * the Rx FIFO should be large enough to accommodate at least |
| 1009 | * one full receive packet and is similarly rounded up and |
| 1010 | * expressed in KB. */ |
| 1011 | pba = rd32(E1000_PBA); |
| 1012 | /* upper 16 bits has Tx packet buffer allocation size in KB */ |
| 1013 | tx_space = pba >> 16; |
| 1014 | /* lower 16 bits has Rx packet buffer allocation size in KB */ |
| 1015 | pba &= 0xffff; |
| 1016 | /* the tx fifo also stores 16 bytes of information about the tx |
| 1017 | * but don't include ethernet FCS because hardware appends it */ |
| 1018 | min_tx_space = (adapter->max_frame_size + |
Alexander Duyck | 85e8d00 | 2009-02-16 00:00:20 -0800 | [diff] [blame] | 1019 | sizeof(union e1000_adv_tx_desc) - |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1020 | ETH_FCS_LEN) * 2; |
| 1021 | min_tx_space = ALIGN(min_tx_space, 1024); |
| 1022 | min_tx_space >>= 10; |
| 1023 | /* software strips receive CRC, so leave room for it */ |
| 1024 | min_rx_space = adapter->max_frame_size; |
| 1025 | min_rx_space = ALIGN(min_rx_space, 1024); |
| 1026 | min_rx_space >>= 10; |
| 1027 | |
| 1028 | /* If current Tx allocation is less than the min Tx FIFO size, |
| 1029 | * and the min Tx FIFO size is less than the current Rx FIFO |
| 1030 | * allocation, take space away from current Rx allocation */ |
| 1031 | if (tx_space < min_tx_space && |
| 1032 | ((min_tx_space - tx_space) < pba)) { |
| 1033 | pba = pba - (min_tx_space - tx_space); |
| 1034 | |
| 1035 | /* if short on rx space, rx wins and must trump tx |
| 1036 | * adjustment */ |
| 1037 | if (pba < min_rx_space) |
| 1038 | pba = min_rx_space; |
| 1039 | } |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 1040 | wr32(E1000_PBA, pba); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1041 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1042 | |
| 1043 | /* flow control settings */ |
| 1044 | /* The high water mark must be low enough to fit one full frame |
| 1045 | * (or the size used for early receive) above it in the Rx FIFO. |
| 1046 | * Set it to the lower of: |
| 1047 | * - 90% of the Rx FIFO size, or |
| 1048 | * - the full Rx FIFO size minus one full frame */ |
| 1049 | hwm = min(((pba << 10) * 9 / 10), |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 1050 | ((pba << 10) - 2 * adapter->max_frame_size)); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1051 | |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 1052 | if (mac->type < e1000_82576) { |
| 1053 | fc->high_water = hwm & 0xFFF8; /* 8-byte granularity */ |
| 1054 | fc->low_water = fc->high_water - 8; |
| 1055 | } else { |
| 1056 | fc->high_water = hwm & 0xFFF0; /* 16-byte granularity */ |
| 1057 | fc->low_water = fc->high_water - 16; |
| 1058 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1059 | fc->pause_time = 0xFFFF; |
| 1060 | fc->send_xon = 1; |
| 1061 | fc->type = fc->original_type; |
| 1062 | |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 1063 | /* disable receive for all VFs and wait one second */ |
| 1064 | if (adapter->vfs_allocated_count) { |
| 1065 | int i; |
| 1066 | for (i = 0 ; i < adapter->vfs_allocated_count; i++) |
| 1067 | adapter->vf_data[i].clear_to_send = false; |
| 1068 | |
| 1069 | /* ping all the active vfs to let them know we are going down */ |
| 1070 | igb_ping_all_vfs(adapter); |
| 1071 | |
| 1072 | /* disable transmits and receives */ |
| 1073 | wr32(E1000_VFRE, 0); |
| 1074 | wr32(E1000_VFTE, 0); |
| 1075 | } |
| 1076 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1077 | /* Allow time for pending master requests to run */ |
| 1078 | adapter->hw.mac.ops.reset_hw(&adapter->hw); |
| 1079 | wr32(E1000_WUC, 0); |
| 1080 | |
| 1081 | if (adapter->hw.mac.ops.init_hw(&adapter->hw)) |
| 1082 | dev_err(&adapter->pdev->dev, "Hardware Error\n"); |
| 1083 | |
| 1084 | igb_update_mng_vlan(adapter); |
| 1085 | |
| 1086 | /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */ |
| 1087 | wr32(E1000_VET, ETHERNET_IEEE_VLAN_TYPE); |
| 1088 | |
| 1089 | igb_reset_adaptive(&adapter->hw); |
Alexander Duyck | f5f4cf0 | 2008-11-21 21:30:24 -0800 | [diff] [blame] | 1090 | igb_get_phy_info(&adapter->hw); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1091 | } |
| 1092 | |
Stephen Hemminger | 2e5c692 | 2008-11-19 22:20:44 -0800 | [diff] [blame] | 1093 | static const struct net_device_ops igb_netdev_ops = { |
| 1094 | .ndo_open = igb_open, |
| 1095 | .ndo_stop = igb_close, |
Stephen Hemminger | 0082982 | 2008-11-20 20:14:53 -0800 | [diff] [blame] | 1096 | .ndo_start_xmit = igb_xmit_frame_adv, |
Stephen Hemminger | 2e5c692 | 2008-11-19 22:20:44 -0800 | [diff] [blame] | 1097 | .ndo_get_stats = igb_get_stats, |
| 1098 | .ndo_set_multicast_list = igb_set_multi, |
| 1099 | .ndo_set_mac_address = igb_set_mac, |
| 1100 | .ndo_change_mtu = igb_change_mtu, |
| 1101 | .ndo_do_ioctl = igb_ioctl, |
| 1102 | .ndo_tx_timeout = igb_tx_timeout, |
| 1103 | .ndo_validate_addr = eth_validate_addr, |
| 1104 | .ndo_vlan_rx_register = igb_vlan_rx_register, |
| 1105 | .ndo_vlan_rx_add_vid = igb_vlan_rx_add_vid, |
| 1106 | .ndo_vlan_rx_kill_vid = igb_vlan_rx_kill_vid, |
| 1107 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 1108 | .ndo_poll_controller = igb_netpoll, |
| 1109 | #endif |
| 1110 | }; |
| 1111 | |
Taku Izumi | 42bfd33a | 2008-06-20 12:10:30 +0900 | [diff] [blame] | 1112 | /** |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1113 | * igb_probe - Device Initialization Routine |
| 1114 | * @pdev: PCI device information struct |
| 1115 | * @ent: entry in igb_pci_tbl |
| 1116 | * |
| 1117 | * Returns 0 on success, negative on failure |
| 1118 | * |
| 1119 | * igb_probe initializes an adapter identified by a pci_dev structure. |
| 1120 | * The OS initialization, configuring of the adapter private structure, |
| 1121 | * and a hardware reset occur. |
| 1122 | **/ |
| 1123 | static int __devinit igb_probe(struct pci_dev *pdev, |
| 1124 | const struct pci_device_id *ent) |
| 1125 | { |
| 1126 | struct net_device *netdev; |
| 1127 | struct igb_adapter *adapter; |
| 1128 | struct e1000_hw *hw; |
Alexander Duyck | c54106b | 2008-10-16 21:26:57 -0700 | [diff] [blame] | 1129 | struct pci_dev *us_dev; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1130 | const struct e1000_info *ei = igb_info_tbl[ent->driver_data]; |
| 1131 | unsigned long mmio_start, mmio_len; |
Alexander Duyck | 450c87c | 2009-02-06 23:22:11 +0000 | [diff] [blame] | 1132 | int err, pci_using_dac, pos; |
Alexander Duyck | c54106b | 2008-10-16 21:26:57 -0700 | [diff] [blame] | 1133 | u16 eeprom_data = 0, state = 0; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1134 | u16 eeprom_apme_mask = IGB_EEPROM_APME; |
| 1135 | u32 part_num; |
| 1136 | |
Alexander Duyck | aed5dec | 2009-02-06 23:16:04 +0000 | [diff] [blame] | 1137 | err = pci_enable_device_mem(pdev); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1138 | if (err) |
| 1139 | return err; |
| 1140 | |
| 1141 | pci_using_dac = 0; |
| 1142 | err = pci_set_dma_mask(pdev, DMA_64BIT_MASK); |
| 1143 | if (!err) { |
| 1144 | err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK); |
| 1145 | if (!err) |
| 1146 | pci_using_dac = 1; |
| 1147 | } else { |
| 1148 | err = pci_set_dma_mask(pdev, DMA_32BIT_MASK); |
| 1149 | if (err) { |
| 1150 | err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK); |
| 1151 | if (err) { |
| 1152 | dev_err(&pdev->dev, "No usable DMA " |
| 1153 | "configuration, aborting\n"); |
| 1154 | goto err_dma; |
| 1155 | } |
| 1156 | } |
| 1157 | } |
| 1158 | |
Alexander Duyck | c54106b | 2008-10-16 21:26:57 -0700 | [diff] [blame] | 1159 | /* 82575 requires that the pci-e link partner disable the L0s state */ |
| 1160 | switch (pdev->device) { |
| 1161 | case E1000_DEV_ID_82575EB_COPPER: |
| 1162 | case E1000_DEV_ID_82575EB_FIBER_SERDES: |
| 1163 | case E1000_DEV_ID_82575GB_QUAD_COPPER: |
| 1164 | us_dev = pdev->bus->self; |
| 1165 | pos = pci_find_capability(us_dev, PCI_CAP_ID_EXP); |
| 1166 | if (pos) { |
| 1167 | pci_read_config_word(us_dev, pos + PCI_EXP_LNKCTL, |
| 1168 | &state); |
| 1169 | state &= ~PCIE_LINK_STATE_L0S; |
| 1170 | pci_write_config_word(us_dev, pos + PCI_EXP_LNKCTL, |
| 1171 | state); |
Bjorn Helgaas | ac45020 | 2008-11-13 06:20:10 +0000 | [diff] [blame] | 1172 | dev_info(&pdev->dev, |
| 1173 | "Disabling ASPM L0s upstream switch port %s\n", |
| 1174 | pci_name(us_dev)); |
Alexander Duyck | c54106b | 2008-10-16 21:26:57 -0700 | [diff] [blame] | 1175 | } |
| 1176 | default: |
| 1177 | break; |
| 1178 | } |
| 1179 | |
Alexander Duyck | aed5dec | 2009-02-06 23:16:04 +0000 | [diff] [blame] | 1180 | err = pci_request_selected_regions(pdev, pci_select_bars(pdev, |
| 1181 | IORESOURCE_MEM), |
| 1182 | igb_driver_name); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1183 | if (err) |
| 1184 | goto err_pci_reg; |
| 1185 | |
Jeff Kirsher | ea943d4 | 2008-12-11 20:34:19 -0800 | [diff] [blame] | 1186 | err = pci_enable_pcie_error_reporting(pdev); |
| 1187 | if (err) { |
| 1188 | dev_err(&pdev->dev, "pci_enable_pcie_error_reporting failed " |
| 1189 | "0x%x\n", err); |
| 1190 | /* non-fatal, continue */ |
| 1191 | } |
Alexander Duyck | 40a914f | 2008-11-27 00:24:37 -0800 | [diff] [blame] | 1192 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1193 | pci_set_master(pdev); |
Auke Kok | c682fc2 | 2008-04-23 11:09:34 -0700 | [diff] [blame] | 1194 | pci_save_state(pdev); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1195 | |
| 1196 | err = -ENOMEM; |
Alexander Duyck | 1bfaf07 | 2009-02-19 20:39:23 -0800 | [diff] [blame] | 1197 | netdev = alloc_etherdev_mq(sizeof(struct igb_adapter), |
| 1198 | IGB_ABS_MAX_TX_QUEUES); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1199 | if (!netdev) |
| 1200 | goto err_alloc_etherdev; |
| 1201 | |
| 1202 | SET_NETDEV_DEV(netdev, &pdev->dev); |
| 1203 | |
| 1204 | pci_set_drvdata(pdev, netdev); |
| 1205 | adapter = netdev_priv(netdev); |
| 1206 | adapter->netdev = netdev; |
| 1207 | adapter->pdev = pdev; |
| 1208 | hw = &adapter->hw; |
| 1209 | hw->back = adapter; |
| 1210 | adapter->msg_enable = NETIF_MSG_DRV | NETIF_MSG_PROBE; |
| 1211 | |
| 1212 | mmio_start = pci_resource_start(pdev, 0); |
| 1213 | mmio_len = pci_resource_len(pdev, 0); |
| 1214 | |
| 1215 | err = -EIO; |
Alexander Duyck | 28b0759 | 2009-02-06 23:20:31 +0000 | [diff] [blame] | 1216 | hw->hw_addr = ioremap(mmio_start, mmio_len); |
| 1217 | if (!hw->hw_addr) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1218 | goto err_ioremap; |
| 1219 | |
Stephen Hemminger | 2e5c692 | 2008-11-19 22:20:44 -0800 | [diff] [blame] | 1220 | netdev->netdev_ops = &igb_netdev_ops; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1221 | igb_set_ethtool_ops(netdev); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1222 | netdev->watchdog_timeo = 5 * HZ; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1223 | |
| 1224 | strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1); |
| 1225 | |
| 1226 | netdev->mem_start = mmio_start; |
| 1227 | netdev->mem_end = mmio_start + mmio_len; |
| 1228 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1229 | /* PCI config space info */ |
| 1230 | hw->vendor_id = pdev->vendor; |
| 1231 | hw->device_id = pdev->device; |
| 1232 | hw->revision_id = pdev->revision; |
| 1233 | hw->subsystem_vendor_id = pdev->subsystem_vendor; |
| 1234 | hw->subsystem_device_id = pdev->subsystem_device; |
| 1235 | |
| 1236 | /* setup the private structure */ |
| 1237 | hw->back = adapter; |
| 1238 | /* Copy the default MAC, PHY and NVM function pointers */ |
| 1239 | memcpy(&hw->mac.ops, ei->mac_ops, sizeof(hw->mac.ops)); |
| 1240 | memcpy(&hw->phy.ops, ei->phy_ops, sizeof(hw->phy.ops)); |
| 1241 | memcpy(&hw->nvm.ops, ei->nvm_ops, sizeof(hw->nvm.ops)); |
| 1242 | /* Initialize skew-specific constants */ |
| 1243 | err = ei->get_invariants(hw); |
| 1244 | if (err) |
Alexander Duyck | 450c87c | 2009-02-06 23:22:11 +0000 | [diff] [blame] | 1245 | goto err_sw_init; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1246 | |
Alexander Duyck | 450c87c | 2009-02-06 23:22:11 +0000 | [diff] [blame] | 1247 | /* setup the private structure */ |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1248 | err = igb_sw_init(adapter); |
| 1249 | if (err) |
| 1250 | goto err_sw_init; |
| 1251 | |
| 1252 | igb_get_bus_info_pcie(hw); |
| 1253 | |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 1254 | /* set flags */ |
| 1255 | switch (hw->mac.type) { |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 1256 | case e1000_82575: |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 1257 | adapter->flags |= IGB_FLAG_NEED_CTX_IDX; |
| 1258 | break; |
Alexander Duyck | bbd98fe | 2009-01-31 00:52:30 -0800 | [diff] [blame] | 1259 | case e1000_82576: |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 1260 | default: |
| 1261 | break; |
| 1262 | } |
| 1263 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1264 | hw->phy.autoneg_wait_to_complete = false; |
| 1265 | hw->mac.adaptive_ifs = true; |
| 1266 | |
| 1267 | /* Copper options */ |
| 1268 | if (hw->phy.media_type == e1000_media_type_copper) { |
| 1269 | hw->phy.mdix = AUTO_ALL_MODES; |
| 1270 | hw->phy.disable_polarity_correction = false; |
| 1271 | hw->phy.ms_type = e1000_ms_hw_default; |
| 1272 | } |
| 1273 | |
| 1274 | if (igb_check_reset_block(hw)) |
| 1275 | dev_info(&pdev->dev, |
| 1276 | "PHY reset is blocked due to SOL/IDER session.\n"); |
| 1277 | |
| 1278 | netdev->features = NETIF_F_SG | |
Alexander Duyck | 7d8eb29 | 2009-02-06 23:18:27 +0000 | [diff] [blame] | 1279 | NETIF_F_IP_CSUM | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1280 | NETIF_F_HW_VLAN_TX | |
| 1281 | NETIF_F_HW_VLAN_RX | |
| 1282 | NETIF_F_HW_VLAN_FILTER; |
| 1283 | |
Alexander Duyck | 7d8eb29 | 2009-02-06 23:18:27 +0000 | [diff] [blame] | 1284 | netdev->features |= NETIF_F_IPV6_CSUM; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1285 | netdev->features |= NETIF_F_TSO; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1286 | netdev->features |= NETIF_F_TSO6; |
Jeff Kirsher | 48f29ff | 2008-06-05 04:06:27 -0700 | [diff] [blame] | 1287 | |
Herbert Xu | 5c0999b | 2009-01-19 15:20:57 -0800 | [diff] [blame] | 1288 | netdev->features |= NETIF_F_GRO; |
Alexander Duyck | d335252 | 2008-07-08 15:12:13 -0700 | [diff] [blame] | 1289 | |
Jeff Kirsher | 48f29ff | 2008-06-05 04:06:27 -0700 | [diff] [blame] | 1290 | netdev->vlan_features |= NETIF_F_TSO; |
| 1291 | netdev->vlan_features |= NETIF_F_TSO6; |
Alexander Duyck | 7d8eb29 | 2009-02-06 23:18:27 +0000 | [diff] [blame] | 1292 | netdev->vlan_features |= NETIF_F_IP_CSUM; |
Jeff Kirsher | 48f29ff | 2008-06-05 04:06:27 -0700 | [diff] [blame] | 1293 | netdev->vlan_features |= NETIF_F_SG; |
| 1294 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1295 | if (pci_using_dac) |
| 1296 | netdev->features |= NETIF_F_HIGHDMA; |
| 1297 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1298 | adapter->en_mng_pt = igb_enable_mng_pass_thru(&adapter->hw); |
| 1299 | |
| 1300 | /* before reading the NVM, reset the controller to put the device in a |
| 1301 | * known good starting state */ |
| 1302 | hw->mac.ops.reset_hw(hw); |
| 1303 | |
| 1304 | /* make sure the NVM is good */ |
| 1305 | if (igb_validate_nvm_checksum(hw) < 0) { |
| 1306 | dev_err(&pdev->dev, "The NVM Checksum Is Not Valid\n"); |
| 1307 | err = -EIO; |
| 1308 | goto err_eeprom; |
| 1309 | } |
| 1310 | |
| 1311 | /* copy the MAC address out of the NVM */ |
| 1312 | if (hw->mac.ops.read_mac_addr(hw)) |
| 1313 | dev_err(&pdev->dev, "NVM Read Error\n"); |
| 1314 | |
| 1315 | memcpy(netdev->dev_addr, hw->mac.addr, netdev->addr_len); |
| 1316 | memcpy(netdev->perm_addr, hw->mac.addr, netdev->addr_len); |
| 1317 | |
| 1318 | if (!is_valid_ether_addr(netdev->perm_addr)) { |
| 1319 | dev_err(&pdev->dev, "Invalid MAC Address\n"); |
| 1320 | err = -EIO; |
| 1321 | goto err_eeprom; |
| 1322 | } |
| 1323 | |
| 1324 | init_timer(&adapter->watchdog_timer); |
| 1325 | adapter->watchdog_timer.function = &igb_watchdog; |
| 1326 | adapter->watchdog_timer.data = (unsigned long) adapter; |
| 1327 | |
| 1328 | init_timer(&adapter->phy_info_timer); |
| 1329 | adapter->phy_info_timer.function = &igb_update_phy_info; |
| 1330 | adapter->phy_info_timer.data = (unsigned long) adapter; |
| 1331 | |
| 1332 | INIT_WORK(&adapter->reset_task, igb_reset_task); |
| 1333 | INIT_WORK(&adapter->watchdog_task, igb_watchdog_task); |
| 1334 | |
Alexander Duyck | 450c87c | 2009-02-06 23:22:11 +0000 | [diff] [blame] | 1335 | /* Initialize link properties that are user-changeable */ |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1336 | adapter->fc_autoneg = true; |
| 1337 | hw->mac.autoneg = true; |
| 1338 | hw->phy.autoneg_advertised = 0x2f; |
| 1339 | |
| 1340 | hw->fc.original_type = e1000_fc_default; |
| 1341 | hw->fc.type = e1000_fc_default; |
| 1342 | |
Alexander Duyck | cbd347a | 2009-02-15 23:59:44 -0800 | [diff] [blame] | 1343 | adapter->itr_setting = IGB_DEFAULT_ITR; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1344 | adapter->itr = IGB_START_ITR; |
| 1345 | |
| 1346 | igb_validate_mdi_setting(hw); |
| 1347 | |
| 1348 | adapter->rx_csum = 1; |
| 1349 | |
| 1350 | /* Initial Wake on LAN setting If APM wake is enabled in the EEPROM, |
| 1351 | * enable the ACPI Magic Packet filter |
| 1352 | */ |
| 1353 | |
Alexander Duyck | a2cf8b6 | 2009-03-13 20:41:17 +0000 | [diff] [blame] | 1354 | if (hw->bus.func == 0) |
Alexander Duyck | 312c75a | 2009-02-06 23:17:47 +0000 | [diff] [blame] | 1355 | hw->nvm.ops.read(hw, NVM_INIT_CONTROL3_PORT_A, 1, &eeprom_data); |
Alexander Duyck | a2cf8b6 | 2009-03-13 20:41:17 +0000 | [diff] [blame] | 1356 | else if (hw->bus.func == 1) |
| 1357 | hw->nvm.ops.read(hw, NVM_INIT_CONTROL3_PORT_B, 1, &eeprom_data); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1358 | |
| 1359 | if (eeprom_data & eeprom_apme_mask) |
| 1360 | adapter->eeprom_wol |= E1000_WUFC_MAG; |
| 1361 | |
| 1362 | /* now that we have the eeprom settings, apply the special cases where |
| 1363 | * the eeprom may be wrong or the board simply won't support wake on |
| 1364 | * lan on a particular port */ |
| 1365 | switch (pdev->device) { |
| 1366 | case E1000_DEV_ID_82575GB_QUAD_COPPER: |
| 1367 | adapter->eeprom_wol = 0; |
| 1368 | break; |
| 1369 | case E1000_DEV_ID_82575EB_FIBER_SERDES: |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 1370 | case E1000_DEV_ID_82576_FIBER: |
| 1371 | case E1000_DEV_ID_82576_SERDES: |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1372 | /* Wake events only supported on port A for dual fiber |
| 1373 | * regardless of eeprom setting */ |
| 1374 | if (rd32(E1000_STATUS) & E1000_STATUS_FUNC_1) |
| 1375 | adapter->eeprom_wol = 0; |
| 1376 | break; |
| 1377 | } |
| 1378 | |
| 1379 | /* initialize the wol settings based on the eeprom settings */ |
| 1380 | adapter->wol = adapter->eeprom_wol; |
\"Rafael J. Wysocki\ | e1b86d8 | 2008-11-07 20:30:37 +0000 | [diff] [blame] | 1381 | device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1382 | |
| 1383 | /* reset the hardware with the new settings */ |
| 1384 | igb_reset(adapter); |
| 1385 | |
| 1386 | /* let the f/w know that the h/w is now under the control of the |
| 1387 | * driver. */ |
| 1388 | igb_get_hw_control(adapter); |
| 1389 | |
| 1390 | /* tell the stack to leave us alone until igb_open() is called */ |
| 1391 | netif_carrier_off(netdev); |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 1392 | netif_tx_stop_all_queues(netdev); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1393 | |
| 1394 | strcpy(netdev->name, "eth%d"); |
| 1395 | err = register_netdev(netdev); |
| 1396 | if (err) |
| 1397 | goto err_register; |
| 1398 | |
Alexander Duyck | 3768011 | 2009-02-19 20:40:30 -0800 | [diff] [blame] | 1399 | #ifdef CONFIG_PCI_IOV |
| 1400 | /* since iov functionality isn't critical to base device function we |
| 1401 | * can accept failure. If it fails we don't allow iov to be enabled */ |
| 1402 | if (hw->mac.type == e1000_82576) { |
| 1403 | err = pci_enable_sriov(pdev, 0); |
| 1404 | if (!err) |
| 1405 | err = device_create_file(&netdev->dev, |
| 1406 | &dev_attr_num_vfs); |
| 1407 | if (err) |
| 1408 | dev_err(&pdev->dev, "Failed to initialize IOV\n"); |
| 1409 | } |
| 1410 | |
| 1411 | #endif |
Jeff Kirsher | 421e02f | 2008-10-17 11:08:31 -0700 | [diff] [blame] | 1412 | #ifdef CONFIG_IGB_DCA |
Alexander Duyck | bbd98fe | 2009-01-31 00:52:30 -0800 | [diff] [blame] | 1413 | if (dca_add_requester(&pdev->dev) == 0) { |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 1414 | adapter->flags |= IGB_FLAG_DCA_ENABLED; |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 1415 | dev_info(&pdev->dev, "DCA enabled\n"); |
| 1416 | /* Always use CB2 mode, difference is masked |
| 1417 | * in the CB driver. */ |
Alexander Duyck | cbd347a | 2009-02-15 23:59:44 -0800 | [diff] [blame] | 1418 | wr32(E1000_DCA_CTRL, E1000_DCA_CTRL_DCA_MODE_CB2); |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 1419 | igb_setup_dca(adapter); |
| 1420 | } |
| 1421 | #endif |
| 1422 | |
Patrick Ohly | 38c845c | 2009-02-12 05:03:41 +0000 | [diff] [blame] | 1423 | /* |
| 1424 | * Initialize hardware timer: we keep it running just in case |
| 1425 | * that some program needs it later on. |
| 1426 | */ |
| 1427 | memset(&adapter->cycles, 0, sizeof(adapter->cycles)); |
| 1428 | adapter->cycles.read = igb_read_clock; |
| 1429 | adapter->cycles.mask = CLOCKSOURCE_MASK(64); |
| 1430 | adapter->cycles.mult = 1; |
| 1431 | adapter->cycles.shift = IGB_TSYNC_SHIFT; |
| 1432 | wr32(E1000_TIMINCA, |
| 1433 | (1<<24) | |
| 1434 | IGB_TSYNC_CYCLE_TIME_IN_NANOSECONDS * IGB_TSYNC_SCALE); |
| 1435 | #if 0 |
| 1436 | /* |
| 1437 | * Avoid rollover while we initialize by resetting the time counter. |
| 1438 | */ |
| 1439 | wr32(E1000_SYSTIML, 0x00000000); |
| 1440 | wr32(E1000_SYSTIMH, 0x00000000); |
| 1441 | #else |
| 1442 | /* |
| 1443 | * Set registers so that rollover occurs soon to test this. |
| 1444 | */ |
| 1445 | wr32(E1000_SYSTIML, 0x00000000); |
| 1446 | wr32(E1000_SYSTIMH, 0xFF800000); |
| 1447 | #endif |
| 1448 | wrfl(); |
| 1449 | timecounter_init(&adapter->clock, |
| 1450 | &adapter->cycles, |
| 1451 | ktime_to_ns(ktime_get_real())); |
| 1452 | |
Patrick Ohly | 33af6bc | 2009-02-12 05:03:43 +0000 | [diff] [blame] | 1453 | /* |
| 1454 | * Synchronize our NIC clock against system wall clock. NIC |
| 1455 | * time stamp reading requires ~3us per sample, each sample |
| 1456 | * was pretty stable even under load => only require 10 |
| 1457 | * samples for each offset comparison. |
| 1458 | */ |
| 1459 | memset(&adapter->compare, 0, sizeof(adapter->compare)); |
| 1460 | adapter->compare.source = &adapter->clock; |
| 1461 | adapter->compare.target = ktime_get_real; |
| 1462 | adapter->compare.num_samples = 10; |
| 1463 | timecompare_update(&adapter->compare, 0); |
| 1464 | |
Patrick Ohly | 38c845c | 2009-02-12 05:03:41 +0000 | [diff] [blame] | 1465 | #ifdef DEBUG |
| 1466 | { |
| 1467 | char buffer[160]; |
| 1468 | printk(KERN_DEBUG |
| 1469 | "igb: %s: hw %p initialized timer\n", |
| 1470 | igb_get_time_str(adapter, buffer), |
| 1471 | &adapter->hw); |
| 1472 | } |
| 1473 | #endif |
| 1474 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1475 | dev_info(&pdev->dev, "Intel(R) Gigabit Ethernet Network Connection\n"); |
| 1476 | /* print bus type/speed/width info */ |
Johannes Berg | 7c510e4 | 2008-10-27 17:47:26 -0700 | [diff] [blame] | 1477 | dev_info(&pdev->dev, "%s: (PCIe:%s:%s) %pM\n", |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1478 | netdev->name, |
| 1479 | ((hw->bus.speed == e1000_bus_speed_2500) |
| 1480 | ? "2.5Gb/s" : "unknown"), |
| 1481 | ((hw->bus.width == e1000_bus_width_pcie_x4) |
| 1482 | ? "Width x4" : (hw->bus.width == e1000_bus_width_pcie_x1) |
| 1483 | ? "Width x1" : "unknown"), |
Johannes Berg | 7c510e4 | 2008-10-27 17:47:26 -0700 | [diff] [blame] | 1484 | netdev->dev_addr); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1485 | |
| 1486 | igb_read_part_num(hw, &part_num); |
| 1487 | dev_info(&pdev->dev, "%s: PBA No: %06x-%03x\n", netdev->name, |
| 1488 | (part_num >> 8), (part_num & 0xff)); |
| 1489 | |
| 1490 | dev_info(&pdev->dev, |
| 1491 | "Using %s interrupts. %d rx queue(s), %d tx queue(s)\n", |
| 1492 | adapter->msix_entries ? "MSI-X" : |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 1493 | (adapter->flags & IGB_FLAG_HAS_MSI) ? "MSI" : "legacy", |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1494 | adapter->num_rx_queues, adapter->num_tx_queues); |
| 1495 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1496 | return 0; |
| 1497 | |
| 1498 | err_register: |
| 1499 | igb_release_hw_control(adapter); |
| 1500 | err_eeprom: |
| 1501 | if (!igb_check_reset_block(hw)) |
Alexander Duyck | f5f4cf0 | 2008-11-21 21:30:24 -0800 | [diff] [blame] | 1502 | igb_reset_phy(hw); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1503 | |
| 1504 | if (hw->flash_address) |
| 1505 | iounmap(hw->flash_address); |
| 1506 | |
Alexander Duyck | a88f10e | 2008-07-08 15:13:38 -0700 | [diff] [blame] | 1507 | igb_free_queues(adapter); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1508 | err_sw_init: |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1509 | iounmap(hw->hw_addr); |
| 1510 | err_ioremap: |
| 1511 | free_netdev(netdev); |
| 1512 | err_alloc_etherdev: |
Alexander Duyck | aed5dec | 2009-02-06 23:16:04 +0000 | [diff] [blame] | 1513 | pci_release_selected_regions(pdev, pci_select_bars(pdev, |
| 1514 | IORESOURCE_MEM)); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1515 | err_pci_reg: |
| 1516 | err_dma: |
| 1517 | pci_disable_device(pdev); |
| 1518 | return err; |
| 1519 | } |
| 1520 | |
| 1521 | /** |
| 1522 | * igb_remove - Device Removal Routine |
| 1523 | * @pdev: PCI device information struct |
| 1524 | * |
| 1525 | * igb_remove is called by the PCI subsystem to alert the driver |
| 1526 | * that it should release a PCI device. The could be caused by a |
| 1527 | * Hot-Plug event, or because the driver is going to be removed from |
| 1528 | * memory. |
| 1529 | **/ |
| 1530 | static void __devexit igb_remove(struct pci_dev *pdev) |
| 1531 | { |
| 1532 | struct net_device *netdev = pci_get_drvdata(pdev); |
| 1533 | struct igb_adapter *adapter = netdev_priv(netdev); |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 1534 | struct e1000_hw *hw = &adapter->hw; |
Jeff Kirsher | ea943d4 | 2008-12-11 20:34:19 -0800 | [diff] [blame] | 1535 | int err; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1536 | |
| 1537 | /* flush_scheduled work may reschedule our watchdog task, so |
| 1538 | * explicitly disable watchdog tasks from being rescheduled */ |
| 1539 | set_bit(__IGB_DOWN, &adapter->state); |
| 1540 | del_timer_sync(&adapter->watchdog_timer); |
| 1541 | del_timer_sync(&adapter->phy_info_timer); |
| 1542 | |
| 1543 | flush_scheduled_work(); |
| 1544 | |
Jeff Kirsher | 421e02f | 2008-10-17 11:08:31 -0700 | [diff] [blame] | 1545 | #ifdef CONFIG_IGB_DCA |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 1546 | if (adapter->flags & IGB_FLAG_DCA_ENABLED) { |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 1547 | dev_info(&pdev->dev, "DCA disabled\n"); |
| 1548 | dca_remove_requester(&pdev->dev); |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 1549 | adapter->flags &= ~IGB_FLAG_DCA_ENABLED; |
Alexander Duyck | cbd347a | 2009-02-15 23:59:44 -0800 | [diff] [blame] | 1550 | wr32(E1000_DCA_CTRL, E1000_DCA_CTRL_DCA_MODE_DISABLE); |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 1551 | } |
| 1552 | #endif |
| 1553 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1554 | /* Release control of h/w to f/w. If f/w is AMT enabled, this |
| 1555 | * would have already happened in close and is redundant. */ |
| 1556 | igb_release_hw_control(adapter); |
| 1557 | |
| 1558 | unregister_netdev(netdev); |
| 1559 | |
Alexander Duyck | f5f4cf0 | 2008-11-21 21:30:24 -0800 | [diff] [blame] | 1560 | if (!igb_check_reset_block(&adapter->hw)) |
| 1561 | igb_reset_phy(&adapter->hw); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1562 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1563 | igb_reset_interrupt_capability(adapter); |
| 1564 | |
Alexander Duyck | a88f10e | 2008-07-08 15:13:38 -0700 | [diff] [blame] | 1565 | igb_free_queues(adapter); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1566 | |
Alexander Duyck | 3768011 | 2009-02-19 20:40:30 -0800 | [diff] [blame] | 1567 | #ifdef CONFIG_PCI_IOV |
| 1568 | /* reclaim resources allocated to VFs */ |
| 1569 | if (adapter->vf_data) { |
| 1570 | /* disable iov and allow time for transactions to clear */ |
| 1571 | pci_disable_sriov(pdev); |
| 1572 | msleep(500); |
| 1573 | |
| 1574 | kfree(adapter->vf_data); |
| 1575 | adapter->vf_data = NULL; |
| 1576 | wr32(E1000_IOVCTL, E1000_IOVCTL_REUSE_VFQ); |
| 1577 | msleep(100); |
| 1578 | dev_info(&pdev->dev, "IOV Disabled\n"); |
| 1579 | } |
| 1580 | #endif |
Alexander Duyck | 28b0759 | 2009-02-06 23:20:31 +0000 | [diff] [blame] | 1581 | iounmap(hw->hw_addr); |
| 1582 | if (hw->flash_address) |
| 1583 | iounmap(hw->flash_address); |
Alexander Duyck | aed5dec | 2009-02-06 23:16:04 +0000 | [diff] [blame] | 1584 | pci_release_selected_regions(pdev, pci_select_bars(pdev, |
| 1585 | IORESOURCE_MEM)); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1586 | |
| 1587 | free_netdev(netdev); |
| 1588 | |
Jeff Kirsher | ea943d4 | 2008-12-11 20:34:19 -0800 | [diff] [blame] | 1589 | err = pci_disable_pcie_error_reporting(pdev); |
| 1590 | if (err) |
| 1591 | dev_err(&pdev->dev, |
| 1592 | "pci_disable_pcie_error_reporting failed 0x%x\n", err); |
Alexander Duyck | 40a914f | 2008-11-27 00:24:37 -0800 | [diff] [blame] | 1593 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1594 | pci_disable_device(pdev); |
| 1595 | } |
| 1596 | |
| 1597 | /** |
| 1598 | * igb_sw_init - Initialize general software structures (struct igb_adapter) |
| 1599 | * @adapter: board private structure to initialize |
| 1600 | * |
| 1601 | * igb_sw_init initializes the Adapter private data structure. |
| 1602 | * Fields are initialized based on PCI device information and |
| 1603 | * OS network device settings (MTU size). |
| 1604 | **/ |
| 1605 | static int __devinit igb_sw_init(struct igb_adapter *adapter) |
| 1606 | { |
| 1607 | struct e1000_hw *hw = &adapter->hw; |
| 1608 | struct net_device *netdev = adapter->netdev; |
| 1609 | struct pci_dev *pdev = adapter->pdev; |
| 1610 | |
| 1611 | pci_read_config_word(pdev, PCI_COMMAND, &hw->bus.pci_cmd_word); |
| 1612 | |
Alexander Duyck | 68fd991 | 2008-11-20 00:48:10 -0800 | [diff] [blame] | 1613 | adapter->tx_ring_count = IGB_DEFAULT_TXD; |
| 1614 | adapter->rx_ring_count = IGB_DEFAULT_RXD; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1615 | adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE; |
| 1616 | adapter->rx_ps_hdr_size = 0; /* disable packet split */ |
| 1617 | adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN; |
| 1618 | adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN; |
| 1619 | |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 1620 | /* This call may decrease the number of queues depending on |
| 1621 | * interrupt mode. */ |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1622 | igb_set_interrupt_capability(adapter); |
| 1623 | |
| 1624 | if (igb_alloc_queues(adapter)) { |
| 1625 | dev_err(&pdev->dev, "Unable to allocate memory for queues\n"); |
| 1626 | return -ENOMEM; |
| 1627 | } |
| 1628 | |
| 1629 | /* Explicitly disable IRQ since the NIC can be in any state. */ |
| 1630 | igb_irq_disable(adapter); |
| 1631 | |
| 1632 | set_bit(__IGB_DOWN, &adapter->state); |
| 1633 | return 0; |
| 1634 | } |
| 1635 | |
| 1636 | /** |
| 1637 | * igb_open - Called when a network interface is made active |
| 1638 | * @netdev: network interface device structure |
| 1639 | * |
| 1640 | * Returns 0 on success, negative value on failure |
| 1641 | * |
| 1642 | * The open entry point is called when a network interface is made |
| 1643 | * active by the system (IFF_UP). At this point all resources needed |
| 1644 | * for transmit and receive operations are allocated, the interrupt |
| 1645 | * handler is registered with the OS, the watchdog timer is started, |
| 1646 | * and the stack is notified that the interface is ready. |
| 1647 | **/ |
| 1648 | static int igb_open(struct net_device *netdev) |
| 1649 | { |
| 1650 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 1651 | struct e1000_hw *hw = &adapter->hw; |
| 1652 | int err; |
| 1653 | int i; |
| 1654 | |
| 1655 | /* disallow open during test */ |
| 1656 | if (test_bit(__IGB_TESTING, &adapter->state)) |
| 1657 | return -EBUSY; |
| 1658 | |
| 1659 | /* allocate transmit descriptors */ |
| 1660 | err = igb_setup_all_tx_resources(adapter); |
| 1661 | if (err) |
| 1662 | goto err_setup_tx; |
| 1663 | |
| 1664 | /* allocate receive descriptors */ |
| 1665 | err = igb_setup_all_rx_resources(adapter); |
| 1666 | if (err) |
| 1667 | goto err_setup_rx; |
| 1668 | |
| 1669 | /* e1000_power_up_phy(adapter); */ |
| 1670 | |
| 1671 | adapter->mng_vlan_id = IGB_MNG_VLAN_NONE; |
| 1672 | if ((adapter->hw.mng_cookie.status & |
| 1673 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN)) |
| 1674 | igb_update_mng_vlan(adapter); |
| 1675 | |
| 1676 | /* before we allocate an interrupt, we must be ready to handle it. |
| 1677 | * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt |
| 1678 | * as soon as we call pci_request_irq, so we have to setup our |
| 1679 | * clean_rx handler before we do so. */ |
| 1680 | igb_configure(adapter); |
| 1681 | |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 1682 | igb_vmm_control(adapter); |
Alexander Duyck | e173952 | 2009-02-19 20:39:44 -0800 | [diff] [blame] | 1683 | igb_set_rah_pool(hw, adapter->vfs_allocated_count, 0); |
| 1684 | igb_set_vmolr(hw, adapter->vfs_allocated_count); |
| 1685 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1686 | err = igb_request_irq(adapter); |
| 1687 | if (err) |
| 1688 | goto err_req_irq; |
| 1689 | |
| 1690 | /* From here on the code is the same as igb_up() */ |
| 1691 | clear_bit(__IGB_DOWN, &adapter->state); |
| 1692 | |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 1693 | for (i = 0; i < adapter->num_rx_queues; i++) |
| 1694 | napi_enable(&adapter->rx_ring[i].napi); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1695 | |
| 1696 | /* Clear any pending interrupts. */ |
| 1697 | rd32(E1000_ICR); |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 1698 | |
| 1699 | igb_irq_enable(adapter); |
| 1700 | |
Jeff Kirsher | d55b53f | 2008-07-18 04:33:03 -0700 | [diff] [blame] | 1701 | netif_tx_start_all_queues(netdev); |
| 1702 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1703 | /* Fire a link status change interrupt to start the watchdog. */ |
| 1704 | wr32(E1000_ICS, E1000_ICS_LSC); |
| 1705 | |
| 1706 | return 0; |
| 1707 | |
| 1708 | err_req_irq: |
| 1709 | igb_release_hw_control(adapter); |
| 1710 | /* e1000_power_down_phy(adapter); */ |
| 1711 | igb_free_all_rx_resources(adapter); |
| 1712 | err_setup_rx: |
| 1713 | igb_free_all_tx_resources(adapter); |
| 1714 | err_setup_tx: |
| 1715 | igb_reset(adapter); |
| 1716 | |
| 1717 | return err; |
| 1718 | } |
| 1719 | |
| 1720 | /** |
| 1721 | * igb_close - Disables a network interface |
| 1722 | * @netdev: network interface device structure |
| 1723 | * |
| 1724 | * Returns 0, this is not allowed to fail |
| 1725 | * |
| 1726 | * The close entry point is called when an interface is de-activated |
| 1727 | * by the OS. The hardware is still under the driver's control, but |
| 1728 | * needs to be disabled. A global MAC reset is issued to stop the |
| 1729 | * hardware, and all transmit and receive resources are freed. |
| 1730 | **/ |
| 1731 | static int igb_close(struct net_device *netdev) |
| 1732 | { |
| 1733 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 1734 | |
| 1735 | WARN_ON(test_bit(__IGB_RESETTING, &adapter->state)); |
| 1736 | igb_down(adapter); |
| 1737 | |
| 1738 | igb_free_irq(adapter); |
| 1739 | |
| 1740 | igb_free_all_tx_resources(adapter); |
| 1741 | igb_free_all_rx_resources(adapter); |
| 1742 | |
| 1743 | /* kill manageability vlan ID if supported, but not if a vlan with |
| 1744 | * the same ID is registered on the host OS (let 8021q kill it) */ |
| 1745 | if ((adapter->hw.mng_cookie.status & |
| 1746 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN) && |
| 1747 | !(adapter->vlgrp && |
| 1748 | vlan_group_get_device(adapter->vlgrp, adapter->mng_vlan_id))) |
| 1749 | igb_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); |
| 1750 | |
| 1751 | return 0; |
| 1752 | } |
| 1753 | |
| 1754 | /** |
| 1755 | * igb_setup_tx_resources - allocate Tx resources (Descriptors) |
| 1756 | * @adapter: board private structure |
| 1757 | * @tx_ring: tx descriptor ring (for a specific queue) to setup |
| 1758 | * |
| 1759 | * Return 0 on success, negative on failure |
| 1760 | **/ |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1761 | int igb_setup_tx_resources(struct igb_adapter *adapter, |
| 1762 | struct igb_ring *tx_ring) |
| 1763 | { |
| 1764 | struct pci_dev *pdev = adapter->pdev; |
| 1765 | int size; |
| 1766 | |
| 1767 | size = sizeof(struct igb_buffer) * tx_ring->count; |
| 1768 | tx_ring->buffer_info = vmalloc(size); |
| 1769 | if (!tx_ring->buffer_info) |
| 1770 | goto err; |
| 1771 | memset(tx_ring->buffer_info, 0, size); |
| 1772 | |
| 1773 | /* round up to nearest 4K */ |
Alexander Duyck | 85e8d00 | 2009-02-16 00:00:20 -0800 | [diff] [blame] | 1774 | tx_ring->size = tx_ring->count * sizeof(union e1000_adv_tx_desc); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1775 | tx_ring->size = ALIGN(tx_ring->size, 4096); |
| 1776 | |
| 1777 | tx_ring->desc = pci_alloc_consistent(pdev, tx_ring->size, |
| 1778 | &tx_ring->dma); |
| 1779 | |
| 1780 | if (!tx_ring->desc) |
| 1781 | goto err; |
| 1782 | |
| 1783 | tx_ring->adapter = adapter; |
| 1784 | tx_ring->next_to_use = 0; |
| 1785 | tx_ring->next_to_clean = 0; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1786 | return 0; |
| 1787 | |
| 1788 | err: |
| 1789 | vfree(tx_ring->buffer_info); |
| 1790 | dev_err(&adapter->pdev->dev, |
| 1791 | "Unable to allocate memory for the transmit descriptor ring\n"); |
| 1792 | return -ENOMEM; |
| 1793 | } |
| 1794 | |
| 1795 | /** |
| 1796 | * igb_setup_all_tx_resources - wrapper to allocate Tx resources |
| 1797 | * (Descriptors) for all queues |
| 1798 | * @adapter: board private structure |
| 1799 | * |
| 1800 | * Return 0 on success, negative on failure |
| 1801 | **/ |
| 1802 | static int igb_setup_all_tx_resources(struct igb_adapter *adapter) |
| 1803 | { |
| 1804 | int i, err = 0; |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 1805 | int r_idx; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1806 | |
| 1807 | for (i = 0; i < adapter->num_tx_queues; i++) { |
| 1808 | err = igb_setup_tx_resources(adapter, &adapter->tx_ring[i]); |
| 1809 | if (err) { |
| 1810 | dev_err(&adapter->pdev->dev, |
| 1811 | "Allocation for Tx Queue %u failed\n", i); |
| 1812 | for (i--; i >= 0; i--) |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 1813 | igb_free_tx_resources(&adapter->tx_ring[i]); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1814 | break; |
| 1815 | } |
| 1816 | } |
| 1817 | |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 1818 | for (i = 0; i < IGB_MAX_TX_QUEUES; i++) { |
| 1819 | r_idx = i % adapter->num_tx_queues; |
| 1820 | adapter->multi_tx_table[i] = &adapter->tx_ring[r_idx]; |
Alexander Duyck | eebbbdb | 2009-02-06 23:19:29 +0000 | [diff] [blame] | 1821 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1822 | return err; |
| 1823 | } |
| 1824 | |
| 1825 | /** |
| 1826 | * igb_configure_tx - Configure transmit Unit after Reset |
| 1827 | * @adapter: board private structure |
| 1828 | * |
| 1829 | * Configure the Tx unit of the MAC after a reset. |
| 1830 | **/ |
| 1831 | static void igb_configure_tx(struct igb_adapter *adapter) |
| 1832 | { |
Alexander Duyck | 0e014cb | 2008-12-26 01:33:18 -0800 | [diff] [blame] | 1833 | u64 tdba; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1834 | struct e1000_hw *hw = &adapter->hw; |
| 1835 | u32 tctl; |
| 1836 | u32 txdctl, txctrl; |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 1837 | int i, j; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1838 | |
| 1839 | for (i = 0; i < adapter->num_tx_queues; i++) { |
Alexander Duyck | 73cd78f | 2009-02-12 18:16:59 +0000 | [diff] [blame] | 1840 | struct igb_ring *ring = &adapter->tx_ring[i]; |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 1841 | j = ring->reg_idx; |
| 1842 | wr32(E1000_TDLEN(j), |
Alexander Duyck | 85e8d00 | 2009-02-16 00:00:20 -0800 | [diff] [blame] | 1843 | ring->count * sizeof(union e1000_adv_tx_desc)); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1844 | tdba = ring->dma; |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 1845 | wr32(E1000_TDBAL(j), |
Alexander Duyck | 73cd78f | 2009-02-12 18:16:59 +0000 | [diff] [blame] | 1846 | tdba & 0x00000000ffffffffULL); |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 1847 | wr32(E1000_TDBAH(j), tdba >> 32); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1848 | |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 1849 | ring->head = E1000_TDH(j); |
| 1850 | ring->tail = E1000_TDT(j); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1851 | writel(0, hw->hw_addr + ring->tail); |
| 1852 | writel(0, hw->hw_addr + ring->head); |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 1853 | txdctl = rd32(E1000_TXDCTL(j)); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1854 | txdctl |= E1000_TXDCTL_QUEUE_ENABLE; |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 1855 | wr32(E1000_TXDCTL(j), txdctl); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1856 | |
| 1857 | /* Turn off Relaxed Ordering on head write-backs. The |
| 1858 | * writebacks MUST be delivered in order or it will |
| 1859 | * completely screw up our bookeeping. |
| 1860 | */ |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 1861 | txctrl = rd32(E1000_DCA_TXCTRL(j)); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1862 | txctrl &= ~E1000_DCA_TXCTRL_TX_WB_RO_EN; |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 1863 | wr32(E1000_DCA_TXCTRL(j), txctrl); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1864 | } |
| 1865 | |
Alexander Duyck | e173952 | 2009-02-19 20:39:44 -0800 | [diff] [blame] | 1866 | /* disable queue 0 to prevent tail bump w/o re-configuration */ |
| 1867 | if (adapter->vfs_allocated_count) |
| 1868 | wr32(E1000_TXDCTL(0), 0); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1869 | |
| 1870 | /* Program the Transmit Control Register */ |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1871 | tctl = rd32(E1000_TCTL); |
| 1872 | tctl &= ~E1000_TCTL_CT; |
| 1873 | tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC | |
| 1874 | (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT); |
| 1875 | |
| 1876 | igb_config_collision_dist(hw); |
| 1877 | |
| 1878 | /* Setup Transmit Descriptor Settings for eop descriptor */ |
| 1879 | adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_RS; |
| 1880 | |
| 1881 | /* Enable transmits */ |
| 1882 | tctl |= E1000_TCTL_EN; |
| 1883 | |
| 1884 | wr32(E1000_TCTL, tctl); |
| 1885 | } |
| 1886 | |
| 1887 | /** |
| 1888 | * igb_setup_rx_resources - allocate Rx resources (Descriptors) |
| 1889 | * @adapter: board private structure |
| 1890 | * @rx_ring: rx descriptor ring (for a specific queue) to setup |
| 1891 | * |
| 1892 | * Returns 0 on success, negative on failure |
| 1893 | **/ |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1894 | int igb_setup_rx_resources(struct igb_adapter *adapter, |
| 1895 | struct igb_ring *rx_ring) |
| 1896 | { |
| 1897 | struct pci_dev *pdev = adapter->pdev; |
| 1898 | int size, desc_len; |
| 1899 | |
| 1900 | size = sizeof(struct igb_buffer) * rx_ring->count; |
| 1901 | rx_ring->buffer_info = vmalloc(size); |
| 1902 | if (!rx_ring->buffer_info) |
| 1903 | goto err; |
| 1904 | memset(rx_ring->buffer_info, 0, size); |
| 1905 | |
| 1906 | desc_len = sizeof(union e1000_adv_rx_desc); |
| 1907 | |
| 1908 | /* Round up to nearest 4K */ |
| 1909 | rx_ring->size = rx_ring->count * desc_len; |
| 1910 | rx_ring->size = ALIGN(rx_ring->size, 4096); |
| 1911 | |
| 1912 | rx_ring->desc = pci_alloc_consistent(pdev, rx_ring->size, |
| 1913 | &rx_ring->dma); |
| 1914 | |
| 1915 | if (!rx_ring->desc) |
| 1916 | goto err; |
| 1917 | |
| 1918 | rx_ring->next_to_clean = 0; |
| 1919 | rx_ring->next_to_use = 0; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1920 | |
| 1921 | rx_ring->adapter = adapter; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1922 | |
| 1923 | return 0; |
| 1924 | |
| 1925 | err: |
| 1926 | vfree(rx_ring->buffer_info); |
| 1927 | dev_err(&adapter->pdev->dev, "Unable to allocate memory for " |
| 1928 | "the receive descriptor ring\n"); |
| 1929 | return -ENOMEM; |
| 1930 | } |
| 1931 | |
| 1932 | /** |
| 1933 | * igb_setup_all_rx_resources - wrapper to allocate Rx resources |
| 1934 | * (Descriptors) for all queues |
| 1935 | * @adapter: board private structure |
| 1936 | * |
| 1937 | * Return 0 on success, negative on failure |
| 1938 | **/ |
| 1939 | static int igb_setup_all_rx_resources(struct igb_adapter *adapter) |
| 1940 | { |
| 1941 | int i, err = 0; |
| 1942 | |
| 1943 | for (i = 0; i < adapter->num_rx_queues; i++) { |
| 1944 | err = igb_setup_rx_resources(adapter, &adapter->rx_ring[i]); |
| 1945 | if (err) { |
| 1946 | dev_err(&adapter->pdev->dev, |
| 1947 | "Allocation for Rx Queue %u failed\n", i); |
| 1948 | for (i--; i >= 0; i--) |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 1949 | igb_free_rx_resources(&adapter->rx_ring[i]); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1950 | break; |
| 1951 | } |
| 1952 | } |
| 1953 | |
| 1954 | return err; |
| 1955 | } |
| 1956 | |
| 1957 | /** |
| 1958 | * igb_setup_rctl - configure the receive control registers |
| 1959 | * @adapter: Board private structure |
| 1960 | **/ |
| 1961 | static void igb_setup_rctl(struct igb_adapter *adapter) |
| 1962 | { |
| 1963 | struct e1000_hw *hw = &adapter->hw; |
| 1964 | u32 rctl; |
| 1965 | u32 srrctl = 0; |
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 | rctl = rd32(E1000_RCTL); |
| 1969 | |
| 1970 | rctl &= ~(3 << E1000_RCTL_MO_SHIFT); |
Alexander Duyck | 69d728b | 2008-11-25 01:04:03 -0800 | [diff] [blame] | 1971 | rctl &= ~(E1000_RCTL_LBM_TCVR | E1000_RCTL_LBM_MAC); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1972 | |
Alexander Duyck | 69d728b | 2008-11-25 01:04:03 -0800 | [diff] [blame] | 1973 | rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | E1000_RCTL_RDMTS_HALF | |
Alexander Duyck | 28b0759 | 2009-02-06 23:20:31 +0000 | [diff] [blame] | 1974 | (hw->mac.mc_filter_type << E1000_RCTL_MO_SHIFT); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1975 | |
Auke Kok | 87cb7e8 | 2008-07-08 15:08:29 -0700 | [diff] [blame] | 1976 | /* |
| 1977 | * enable stripping of CRC. It's unlikely this will break BMC |
| 1978 | * redirection as it did with e1000. Newer features require |
| 1979 | * that the HW strips the CRC. |
Alexander Duyck | 73cd78f | 2009-02-12 18:16:59 +0000 | [diff] [blame] | 1980 | */ |
Auke Kok | 87cb7e8 | 2008-07-08 15:08:29 -0700 | [diff] [blame] | 1981 | rctl |= E1000_RCTL_SECRC; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1982 | |
Alexander Duyck | 9b07f3d3 | 2008-11-25 01:03:26 -0800 | [diff] [blame] | 1983 | /* |
Alexander Duyck | ec54d7d | 2009-01-31 00:52:57 -0800 | [diff] [blame] | 1984 | * disable store bad packets and clear size bits. |
Alexander Duyck | 9b07f3d3 | 2008-11-25 01:03:26 -0800 | [diff] [blame] | 1985 | */ |
Alexander Duyck | ec54d7d | 2009-01-31 00:52:57 -0800 | [diff] [blame] | 1986 | rctl &= ~(E1000_RCTL_SBP | E1000_RCTL_SZ_256); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1987 | |
Alexander Duyck | ec54d7d | 2009-01-31 00:52:57 -0800 | [diff] [blame] | 1988 | /* enable LPE when to prevent packets larger than max_frame_size */ |
Alexander Duyck | 9b07f3d3 | 2008-11-25 01:03:26 -0800 | [diff] [blame] | 1989 | rctl |= E1000_RCTL_LPE; |
Alexander Duyck | b4557be | 2008-12-10 01:08:59 -0800 | [diff] [blame] | 1990 | |
| 1991 | /* Setup buffer sizes */ |
| 1992 | switch (adapter->rx_buffer_len) { |
| 1993 | case IGB_RXBUFFER_256: |
| 1994 | rctl |= E1000_RCTL_SZ_256; |
| 1995 | break; |
| 1996 | case IGB_RXBUFFER_512: |
| 1997 | rctl |= E1000_RCTL_SZ_512; |
| 1998 | break; |
| 1999 | default: |
| 2000 | srrctl = ALIGN(adapter->rx_buffer_len, 1024) |
| 2001 | >> E1000_SRRCTL_BSIZEPKT_SHIFT; |
| 2002 | break; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2003 | } |
| 2004 | |
| 2005 | /* 82575 and greater support packet-split where the protocol |
| 2006 | * header is placed in skb->data and the packet data is |
| 2007 | * placed in pages hanging off of skb_shinfo(skb)->nr_frags. |
| 2008 | * In the case of a non-split, skb->data is linearly filled, |
| 2009 | * followed by the page buffers. Therefore, skb->data is |
| 2010 | * sized to hold the largest protocol header. |
| 2011 | */ |
| 2012 | /* allocations using alloc_page take too long for regular MTU |
| 2013 | * so only enable packet split for jumbo frames */ |
Alexander Duyck | ec54d7d | 2009-01-31 00:52:57 -0800 | [diff] [blame] | 2014 | if (adapter->netdev->mtu > ETH_DATA_LEN) { |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2015 | adapter->rx_ps_hdr_size = IGB_RXBUFFER_128; |
Alexander Duyck | bf36c1a | 2008-07-08 15:11:40 -0700 | [diff] [blame] | 2016 | srrctl |= adapter->rx_ps_hdr_size << |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2017 | E1000_SRRCTL_BSIZEHDRSIZE_SHIFT; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2018 | srrctl |= E1000_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS; |
| 2019 | } else { |
| 2020 | adapter->rx_ps_hdr_size = 0; |
| 2021 | srrctl |= E1000_SRRCTL_DESCTYPE_ADV_ONEBUF; |
| 2022 | } |
| 2023 | |
Alexander Duyck | e173952 | 2009-02-19 20:39:44 -0800 | [diff] [blame] | 2024 | /* Attention!!! For SR-IOV PF driver operations you must enable |
| 2025 | * queue drop for all VF and PF queues to prevent head of line blocking |
| 2026 | * if an un-trusted VF does not provide descriptors to hardware. |
| 2027 | */ |
| 2028 | if (adapter->vfs_allocated_count) { |
| 2029 | u32 vmolr; |
| 2030 | |
| 2031 | j = adapter->rx_ring[0].reg_idx; |
| 2032 | |
| 2033 | /* set all queue drop enable bits */ |
| 2034 | wr32(E1000_QDE, ALL_QUEUES); |
| 2035 | srrctl |= E1000_SRRCTL_DROP_EN; |
| 2036 | |
| 2037 | /* disable queue 0 to prevent tail write w/o re-config */ |
| 2038 | wr32(E1000_RXDCTL(0), 0); |
| 2039 | |
| 2040 | vmolr = rd32(E1000_VMOLR(j)); |
| 2041 | if (rctl & E1000_RCTL_LPE) |
| 2042 | vmolr |= E1000_VMOLR_LPE; |
| 2043 | if (adapter->num_rx_queues > 0) |
| 2044 | vmolr |= E1000_VMOLR_RSSE; |
| 2045 | wr32(E1000_VMOLR(j), vmolr); |
| 2046 | } |
| 2047 | |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 2048 | for (i = 0; i < adapter->num_rx_queues; i++) { |
| 2049 | j = adapter->rx_ring[i].reg_idx; |
| 2050 | wr32(E1000_SRRCTL(j), srrctl); |
| 2051 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2052 | |
| 2053 | wr32(E1000_RCTL, rctl); |
| 2054 | } |
| 2055 | |
| 2056 | /** |
Alexander Duyck | e173952 | 2009-02-19 20:39:44 -0800 | [diff] [blame] | 2057 | * igb_rlpml_set - set maximum receive packet size |
| 2058 | * @adapter: board private structure |
| 2059 | * |
| 2060 | * Configure maximum receivable packet size. |
| 2061 | **/ |
| 2062 | static void igb_rlpml_set(struct igb_adapter *adapter) |
| 2063 | { |
| 2064 | u32 max_frame_size = adapter->max_frame_size; |
| 2065 | struct e1000_hw *hw = &adapter->hw; |
| 2066 | u16 pf_id = adapter->vfs_allocated_count; |
| 2067 | |
| 2068 | if (adapter->vlgrp) |
| 2069 | max_frame_size += VLAN_TAG_SIZE; |
| 2070 | |
| 2071 | /* if vfs are enabled we set RLPML to the largest possible request |
| 2072 | * size and set the VMOLR RLPML to the size we need */ |
| 2073 | if (pf_id) { |
| 2074 | igb_set_vf_rlpml(adapter, max_frame_size, pf_id); |
| 2075 | max_frame_size = MAX_STD_JUMBO_FRAME_SIZE + VLAN_TAG_SIZE; |
| 2076 | } |
| 2077 | |
| 2078 | wr32(E1000_RLPML, max_frame_size); |
| 2079 | } |
| 2080 | |
| 2081 | /** |
| 2082 | * igb_configure_vt_default_pool - Configure VT default pool |
| 2083 | * @adapter: board private structure |
| 2084 | * |
| 2085 | * Configure the default pool |
| 2086 | **/ |
| 2087 | static void igb_configure_vt_default_pool(struct igb_adapter *adapter) |
| 2088 | { |
| 2089 | struct e1000_hw *hw = &adapter->hw; |
| 2090 | u16 pf_id = adapter->vfs_allocated_count; |
| 2091 | u32 vtctl; |
| 2092 | |
| 2093 | /* not in sr-iov mode - do nothing */ |
| 2094 | if (!pf_id) |
| 2095 | return; |
| 2096 | |
| 2097 | vtctl = rd32(E1000_VT_CTL); |
| 2098 | vtctl &= ~(E1000_VT_CTL_DEFAULT_POOL_MASK | |
| 2099 | E1000_VT_CTL_DISABLE_DEF_POOL); |
| 2100 | vtctl |= pf_id << E1000_VT_CTL_DEFAULT_POOL_SHIFT; |
| 2101 | wr32(E1000_VT_CTL, vtctl); |
| 2102 | } |
| 2103 | |
| 2104 | /** |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2105 | * igb_configure_rx - Configure receive Unit after Reset |
| 2106 | * @adapter: board private structure |
| 2107 | * |
| 2108 | * Configure the Rx unit of the MAC after a reset. |
| 2109 | **/ |
| 2110 | static void igb_configure_rx(struct igb_adapter *adapter) |
| 2111 | { |
| 2112 | u64 rdba; |
| 2113 | struct e1000_hw *hw = &adapter->hw; |
| 2114 | u32 rctl, rxcsum; |
| 2115 | u32 rxdctl; |
Hannes Eder | 9107584 | 2009-02-18 19:36:04 -0800 | [diff] [blame] | 2116 | int i; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2117 | |
| 2118 | /* disable receives while setting up the descriptors */ |
| 2119 | rctl = rd32(E1000_RCTL); |
| 2120 | wr32(E1000_RCTL, rctl & ~E1000_RCTL_EN); |
| 2121 | wrfl(); |
| 2122 | mdelay(10); |
| 2123 | |
| 2124 | if (adapter->itr_setting > 3) |
Alexander Duyck | 6eb5a7f | 2008-07-08 15:14:44 -0700 | [diff] [blame] | 2125 | wr32(E1000_ITR, adapter->itr); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2126 | |
| 2127 | /* Setup the HW Rx Head and Tail Descriptor Pointers and |
| 2128 | * the Base and Length of the Rx Descriptor Ring */ |
| 2129 | for (i = 0; i < adapter->num_rx_queues; i++) { |
Alexander Duyck | 73cd78f | 2009-02-12 18:16:59 +0000 | [diff] [blame] | 2130 | struct igb_ring *ring = &adapter->rx_ring[i]; |
Hannes Eder | 9107584 | 2009-02-18 19:36:04 -0800 | [diff] [blame] | 2131 | int j = ring->reg_idx; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2132 | rdba = ring->dma; |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 2133 | wr32(E1000_RDBAL(j), |
Alexander Duyck | 73cd78f | 2009-02-12 18:16:59 +0000 | [diff] [blame] | 2134 | rdba & 0x00000000ffffffffULL); |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 2135 | wr32(E1000_RDBAH(j), rdba >> 32); |
| 2136 | wr32(E1000_RDLEN(j), |
Alexander Duyck | 73cd78f | 2009-02-12 18:16:59 +0000 | [diff] [blame] | 2137 | ring->count * sizeof(union e1000_adv_rx_desc)); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2138 | |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 2139 | ring->head = E1000_RDH(j); |
| 2140 | ring->tail = E1000_RDT(j); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2141 | writel(0, hw->hw_addr + ring->tail); |
| 2142 | writel(0, hw->hw_addr + ring->head); |
| 2143 | |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 2144 | rxdctl = rd32(E1000_RXDCTL(j)); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2145 | rxdctl |= E1000_RXDCTL_QUEUE_ENABLE; |
| 2146 | rxdctl &= 0xFFF00000; |
| 2147 | rxdctl |= IGB_RX_PTHRESH; |
| 2148 | rxdctl |= IGB_RX_HTHRESH << 8; |
| 2149 | rxdctl |= IGB_RX_WTHRESH << 16; |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 2150 | wr32(E1000_RXDCTL(j), rxdctl); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2151 | } |
| 2152 | |
| 2153 | if (adapter->num_rx_queues > 1) { |
| 2154 | u32 random[10]; |
| 2155 | u32 mrqc; |
| 2156 | u32 j, shift; |
| 2157 | union e1000_reta { |
| 2158 | u32 dword; |
| 2159 | u8 bytes[4]; |
| 2160 | } reta; |
| 2161 | |
| 2162 | get_random_bytes(&random[0], 40); |
| 2163 | |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 2164 | if (hw->mac.type >= e1000_82576) |
| 2165 | shift = 0; |
| 2166 | else |
| 2167 | shift = 6; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2168 | for (j = 0; j < (32 * 4); j++) { |
| 2169 | reta.bytes[j & 3] = |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 2170 | adapter->rx_ring[(j % adapter->num_rx_queues)].reg_idx << shift; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2171 | if ((j & 3) == 3) |
| 2172 | writel(reta.dword, |
| 2173 | hw->hw_addr + E1000_RETA(0) + (j & ~3)); |
| 2174 | } |
Alexander Duyck | e173952 | 2009-02-19 20:39:44 -0800 | [diff] [blame] | 2175 | if (adapter->vfs_allocated_count) |
| 2176 | mrqc = E1000_MRQC_ENABLE_VMDQ_RSS_2Q; |
| 2177 | else |
| 2178 | mrqc = E1000_MRQC_ENABLE_RSS_4Q; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2179 | |
| 2180 | /* Fill out hash function seeds */ |
| 2181 | for (j = 0; j < 10; j++) |
| 2182 | array_wr32(E1000_RSSRK(0), j, random[j]); |
| 2183 | |
| 2184 | mrqc |= (E1000_MRQC_RSS_FIELD_IPV4 | |
| 2185 | E1000_MRQC_RSS_FIELD_IPV4_TCP); |
| 2186 | mrqc |= (E1000_MRQC_RSS_FIELD_IPV6 | |
| 2187 | E1000_MRQC_RSS_FIELD_IPV6_TCP); |
| 2188 | mrqc |= (E1000_MRQC_RSS_FIELD_IPV4_UDP | |
| 2189 | E1000_MRQC_RSS_FIELD_IPV6_UDP); |
| 2190 | mrqc |= (E1000_MRQC_RSS_FIELD_IPV6_UDP_EX | |
| 2191 | E1000_MRQC_RSS_FIELD_IPV6_TCP_EX); |
| 2192 | |
| 2193 | |
| 2194 | wr32(E1000_MRQC, mrqc); |
| 2195 | |
| 2196 | /* Multiqueue and raw packet checksumming are mutually |
| 2197 | * exclusive. Note that this not the same as TCP/IP |
| 2198 | * checksumming, which works fine. */ |
| 2199 | rxcsum = rd32(E1000_RXCSUM); |
| 2200 | rxcsum |= E1000_RXCSUM_PCSD; |
| 2201 | wr32(E1000_RXCSUM, rxcsum); |
| 2202 | } else { |
Alexander Duyck | e173952 | 2009-02-19 20:39:44 -0800 | [diff] [blame] | 2203 | /* Enable multi-queue for sr-iov */ |
| 2204 | if (adapter->vfs_allocated_count) |
| 2205 | wr32(E1000_MRQC, E1000_MRQC_ENABLE_VMDQ); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2206 | /* Enable Receive Checksum Offload for TCP and UDP */ |
| 2207 | rxcsum = rd32(E1000_RXCSUM); |
Alexander Duyck | 56fbbb4 | 2009-02-12 18:17:42 +0000 | [diff] [blame] | 2208 | if (adapter->rx_csum) |
| 2209 | rxcsum |= E1000_RXCSUM_TUOFL | E1000_RXCSUM_IPPCSE; |
| 2210 | else |
| 2211 | rxcsum &= ~(E1000_RXCSUM_TUOFL | E1000_RXCSUM_IPPCSE); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2212 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2213 | wr32(E1000_RXCSUM, rxcsum); |
| 2214 | } |
| 2215 | |
Alexander Duyck | e173952 | 2009-02-19 20:39:44 -0800 | [diff] [blame] | 2216 | /* Set the default pool for the PF's first queue */ |
| 2217 | igb_configure_vt_default_pool(adapter); |
| 2218 | |
| 2219 | igb_rlpml_set(adapter); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2220 | |
| 2221 | /* Enable Receives */ |
| 2222 | wr32(E1000_RCTL, rctl); |
| 2223 | } |
| 2224 | |
| 2225 | /** |
| 2226 | * igb_free_tx_resources - Free Tx Resources per Queue |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2227 | * @tx_ring: Tx descriptor ring for a specific queue |
| 2228 | * |
| 2229 | * Free all transmit software resources |
| 2230 | **/ |
Alexander Duyck | 68fd991 | 2008-11-20 00:48:10 -0800 | [diff] [blame] | 2231 | void igb_free_tx_resources(struct igb_ring *tx_ring) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2232 | { |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 2233 | struct pci_dev *pdev = tx_ring->adapter->pdev; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2234 | |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 2235 | igb_clean_tx_ring(tx_ring); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2236 | |
| 2237 | vfree(tx_ring->buffer_info); |
| 2238 | tx_ring->buffer_info = NULL; |
| 2239 | |
| 2240 | pci_free_consistent(pdev, tx_ring->size, tx_ring->desc, tx_ring->dma); |
| 2241 | |
| 2242 | tx_ring->desc = NULL; |
| 2243 | } |
| 2244 | |
| 2245 | /** |
| 2246 | * igb_free_all_tx_resources - Free Tx Resources for All Queues |
| 2247 | * @adapter: board private structure |
| 2248 | * |
| 2249 | * Free all transmit software resources |
| 2250 | **/ |
| 2251 | static void igb_free_all_tx_resources(struct igb_adapter *adapter) |
| 2252 | { |
| 2253 | int i; |
| 2254 | |
| 2255 | for (i = 0; i < adapter->num_tx_queues; i++) |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 2256 | igb_free_tx_resources(&adapter->tx_ring[i]); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2257 | } |
| 2258 | |
| 2259 | static void igb_unmap_and_free_tx_resource(struct igb_adapter *adapter, |
| 2260 | struct igb_buffer *buffer_info) |
| 2261 | { |
| 2262 | if (buffer_info->dma) { |
| 2263 | pci_unmap_page(adapter->pdev, |
| 2264 | buffer_info->dma, |
| 2265 | buffer_info->length, |
| 2266 | PCI_DMA_TODEVICE); |
| 2267 | buffer_info->dma = 0; |
| 2268 | } |
| 2269 | if (buffer_info->skb) { |
| 2270 | dev_kfree_skb_any(buffer_info->skb); |
| 2271 | buffer_info->skb = NULL; |
| 2272 | } |
| 2273 | buffer_info->time_stamp = 0; |
Alexander Duyck | 73cd78f | 2009-02-12 18:16:59 +0000 | [diff] [blame] | 2274 | buffer_info->next_to_watch = 0; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2275 | /* buffer_info must be completely set up in the transmit path */ |
| 2276 | } |
| 2277 | |
| 2278 | /** |
| 2279 | * igb_clean_tx_ring - Free Tx Buffers |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2280 | * @tx_ring: ring to be cleaned |
| 2281 | **/ |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 2282 | static void igb_clean_tx_ring(struct igb_ring *tx_ring) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2283 | { |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 2284 | struct igb_adapter *adapter = tx_ring->adapter; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2285 | struct igb_buffer *buffer_info; |
| 2286 | unsigned long size; |
| 2287 | unsigned int i; |
| 2288 | |
| 2289 | if (!tx_ring->buffer_info) |
| 2290 | return; |
| 2291 | /* Free all the Tx ring sk_buffs */ |
| 2292 | |
| 2293 | for (i = 0; i < tx_ring->count; i++) { |
| 2294 | buffer_info = &tx_ring->buffer_info[i]; |
| 2295 | igb_unmap_and_free_tx_resource(adapter, buffer_info); |
| 2296 | } |
| 2297 | |
| 2298 | size = sizeof(struct igb_buffer) * tx_ring->count; |
| 2299 | memset(tx_ring->buffer_info, 0, size); |
| 2300 | |
| 2301 | /* Zero out the descriptor ring */ |
| 2302 | |
| 2303 | memset(tx_ring->desc, 0, tx_ring->size); |
| 2304 | |
| 2305 | tx_ring->next_to_use = 0; |
| 2306 | tx_ring->next_to_clean = 0; |
| 2307 | |
| 2308 | writel(0, adapter->hw.hw_addr + tx_ring->head); |
| 2309 | writel(0, adapter->hw.hw_addr + tx_ring->tail); |
| 2310 | } |
| 2311 | |
| 2312 | /** |
| 2313 | * igb_clean_all_tx_rings - Free Tx Buffers for all queues |
| 2314 | * @adapter: board private structure |
| 2315 | **/ |
| 2316 | static void igb_clean_all_tx_rings(struct igb_adapter *adapter) |
| 2317 | { |
| 2318 | int i; |
| 2319 | |
| 2320 | for (i = 0; i < adapter->num_tx_queues; i++) |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 2321 | igb_clean_tx_ring(&adapter->tx_ring[i]); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2322 | } |
| 2323 | |
| 2324 | /** |
| 2325 | * igb_free_rx_resources - Free Rx Resources |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2326 | * @rx_ring: ring to clean the resources from |
| 2327 | * |
| 2328 | * Free all receive software resources |
| 2329 | **/ |
Alexander Duyck | 68fd991 | 2008-11-20 00:48:10 -0800 | [diff] [blame] | 2330 | void igb_free_rx_resources(struct igb_ring *rx_ring) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2331 | { |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 2332 | struct pci_dev *pdev = rx_ring->adapter->pdev; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2333 | |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 2334 | igb_clean_rx_ring(rx_ring); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2335 | |
| 2336 | vfree(rx_ring->buffer_info); |
| 2337 | rx_ring->buffer_info = NULL; |
| 2338 | |
| 2339 | pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma); |
| 2340 | |
| 2341 | rx_ring->desc = NULL; |
| 2342 | } |
| 2343 | |
| 2344 | /** |
| 2345 | * igb_free_all_rx_resources - Free Rx Resources for All Queues |
| 2346 | * @adapter: board private structure |
| 2347 | * |
| 2348 | * Free all receive software resources |
| 2349 | **/ |
| 2350 | static void igb_free_all_rx_resources(struct igb_adapter *adapter) |
| 2351 | { |
| 2352 | int i; |
| 2353 | |
| 2354 | for (i = 0; i < adapter->num_rx_queues; i++) |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 2355 | igb_free_rx_resources(&adapter->rx_ring[i]); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2356 | } |
| 2357 | |
| 2358 | /** |
| 2359 | * igb_clean_rx_ring - Free Rx Buffers per Queue |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2360 | * @rx_ring: ring to free buffers from |
| 2361 | **/ |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 2362 | static void igb_clean_rx_ring(struct igb_ring *rx_ring) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2363 | { |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 2364 | struct igb_adapter *adapter = rx_ring->adapter; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2365 | struct igb_buffer *buffer_info; |
| 2366 | struct pci_dev *pdev = adapter->pdev; |
| 2367 | unsigned long size; |
| 2368 | unsigned int i; |
| 2369 | |
| 2370 | if (!rx_ring->buffer_info) |
| 2371 | return; |
| 2372 | /* Free all the Rx ring sk_buffs */ |
| 2373 | for (i = 0; i < rx_ring->count; i++) { |
| 2374 | buffer_info = &rx_ring->buffer_info[i]; |
| 2375 | if (buffer_info->dma) { |
| 2376 | if (adapter->rx_ps_hdr_size) |
| 2377 | pci_unmap_single(pdev, buffer_info->dma, |
| 2378 | adapter->rx_ps_hdr_size, |
| 2379 | PCI_DMA_FROMDEVICE); |
| 2380 | else |
| 2381 | pci_unmap_single(pdev, buffer_info->dma, |
| 2382 | adapter->rx_buffer_len, |
| 2383 | PCI_DMA_FROMDEVICE); |
| 2384 | buffer_info->dma = 0; |
| 2385 | } |
| 2386 | |
| 2387 | if (buffer_info->skb) { |
| 2388 | dev_kfree_skb(buffer_info->skb); |
| 2389 | buffer_info->skb = NULL; |
| 2390 | } |
| 2391 | if (buffer_info->page) { |
Alexander Duyck | bf36c1a | 2008-07-08 15:11:40 -0700 | [diff] [blame] | 2392 | if (buffer_info->page_dma) |
| 2393 | pci_unmap_page(pdev, buffer_info->page_dma, |
| 2394 | PAGE_SIZE / 2, |
| 2395 | PCI_DMA_FROMDEVICE); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2396 | put_page(buffer_info->page); |
| 2397 | buffer_info->page = NULL; |
| 2398 | buffer_info->page_dma = 0; |
Alexander Duyck | bf36c1a | 2008-07-08 15:11:40 -0700 | [diff] [blame] | 2399 | buffer_info->page_offset = 0; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2400 | } |
| 2401 | } |
| 2402 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2403 | size = sizeof(struct igb_buffer) * rx_ring->count; |
| 2404 | memset(rx_ring->buffer_info, 0, size); |
| 2405 | |
| 2406 | /* Zero out the descriptor ring */ |
| 2407 | memset(rx_ring->desc, 0, rx_ring->size); |
| 2408 | |
| 2409 | rx_ring->next_to_clean = 0; |
| 2410 | rx_ring->next_to_use = 0; |
| 2411 | |
| 2412 | writel(0, adapter->hw.hw_addr + rx_ring->head); |
| 2413 | writel(0, adapter->hw.hw_addr + rx_ring->tail); |
| 2414 | } |
| 2415 | |
| 2416 | /** |
| 2417 | * igb_clean_all_rx_rings - Free Rx Buffers for all queues |
| 2418 | * @adapter: board private structure |
| 2419 | **/ |
| 2420 | static void igb_clean_all_rx_rings(struct igb_adapter *adapter) |
| 2421 | { |
| 2422 | int i; |
| 2423 | |
| 2424 | for (i = 0; i < adapter->num_rx_queues; i++) |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 2425 | igb_clean_rx_ring(&adapter->rx_ring[i]); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2426 | } |
| 2427 | |
| 2428 | /** |
| 2429 | * igb_set_mac - Change the Ethernet Address of the NIC |
| 2430 | * @netdev: network interface device structure |
| 2431 | * @p: pointer to an address structure |
| 2432 | * |
| 2433 | * Returns 0 on success, negative on failure |
| 2434 | **/ |
| 2435 | static int igb_set_mac(struct net_device *netdev, void *p) |
| 2436 | { |
| 2437 | struct igb_adapter *adapter = netdev_priv(netdev); |
Alexander Duyck | 28b0759 | 2009-02-06 23:20:31 +0000 | [diff] [blame] | 2438 | struct e1000_hw *hw = &adapter->hw; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2439 | struct sockaddr *addr = p; |
| 2440 | |
| 2441 | if (!is_valid_ether_addr(addr->sa_data)) |
| 2442 | return -EADDRNOTAVAIL; |
| 2443 | |
| 2444 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); |
Alexander Duyck | 28b0759 | 2009-02-06 23:20:31 +0000 | [diff] [blame] | 2445 | memcpy(hw->mac.addr, addr->sa_data, netdev->addr_len); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2446 | |
Alexander Duyck | 28b0759 | 2009-02-06 23:20:31 +0000 | [diff] [blame] | 2447 | hw->mac.ops.rar_set(hw, hw->mac.addr, 0); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2448 | |
Alexander Duyck | e173952 | 2009-02-19 20:39:44 -0800 | [diff] [blame] | 2449 | igb_set_rah_pool(hw, adapter->vfs_allocated_count, 0); |
| 2450 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2451 | return 0; |
| 2452 | } |
| 2453 | |
| 2454 | /** |
| 2455 | * igb_set_multi - Multicast and Promiscuous mode set |
| 2456 | * @netdev: network interface device structure |
| 2457 | * |
| 2458 | * The set_multi entry point is called whenever the multicast address |
| 2459 | * list or the network interface flags are updated. This routine is |
| 2460 | * responsible for configuring the hardware for proper multicast, |
| 2461 | * promiscuous mode, and all-multi behavior. |
| 2462 | **/ |
| 2463 | static void igb_set_multi(struct net_device *netdev) |
| 2464 | { |
| 2465 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 2466 | struct e1000_hw *hw = &adapter->hw; |
| 2467 | struct e1000_mac_info *mac = &hw->mac; |
| 2468 | struct dev_mc_list *mc_ptr; |
| 2469 | u8 *mta_list; |
| 2470 | u32 rctl; |
| 2471 | int i; |
| 2472 | |
| 2473 | /* Check for Promiscuous and All Multicast modes */ |
| 2474 | |
| 2475 | rctl = rd32(E1000_RCTL); |
| 2476 | |
Patrick McHardy | 746b9f0 | 2008-07-16 20:15:45 -0700 | [diff] [blame] | 2477 | if (netdev->flags & IFF_PROMISC) { |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2478 | rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE); |
Patrick McHardy | 746b9f0 | 2008-07-16 20:15:45 -0700 | [diff] [blame] | 2479 | rctl &= ~E1000_RCTL_VFE; |
| 2480 | } else { |
| 2481 | if (netdev->flags & IFF_ALLMULTI) { |
| 2482 | rctl |= E1000_RCTL_MPE; |
| 2483 | rctl &= ~E1000_RCTL_UPE; |
| 2484 | } else |
| 2485 | rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE); |
Patrick McHardy | 78ed11a | 2008-07-16 20:16:14 -0700 | [diff] [blame] | 2486 | rctl |= E1000_RCTL_VFE; |
Patrick McHardy | 746b9f0 | 2008-07-16 20:15:45 -0700 | [diff] [blame] | 2487 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2488 | wr32(E1000_RCTL, rctl); |
| 2489 | |
| 2490 | if (!netdev->mc_count) { |
| 2491 | /* nothing to program, so clear mc list */ |
Alexander Duyck | 8a90086 | 2009-02-06 23:20:10 +0000 | [diff] [blame] | 2492 | igb_update_mc_addr_list(hw, NULL, 0, 1, |
| 2493 | mac->rar_entry_count); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2494 | return; |
| 2495 | } |
| 2496 | |
| 2497 | mta_list = kzalloc(netdev->mc_count * 6, GFP_ATOMIC); |
| 2498 | if (!mta_list) |
| 2499 | return; |
| 2500 | |
| 2501 | /* The shared function expects a packed array of only addresses. */ |
| 2502 | mc_ptr = netdev->mc_list; |
| 2503 | |
| 2504 | for (i = 0; i < netdev->mc_count; i++) { |
| 2505 | if (!mc_ptr) |
| 2506 | break; |
| 2507 | memcpy(mta_list + (i*ETH_ALEN), mc_ptr->dmi_addr, ETH_ALEN); |
| 2508 | mc_ptr = mc_ptr->next; |
| 2509 | } |
Alexander Duyck | e173952 | 2009-02-19 20:39:44 -0800 | [diff] [blame] | 2510 | igb_update_mc_addr_list(hw, mta_list, i, |
| 2511 | adapter->vfs_allocated_count + 1, |
| 2512 | mac->rar_entry_count); |
| 2513 | |
| 2514 | igb_set_mc_list_pools(adapter, i, mac->rar_entry_count); |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 2515 | igb_restore_vf_multicasts(adapter); |
| 2516 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2517 | kfree(mta_list); |
| 2518 | } |
| 2519 | |
| 2520 | /* Need to wait a few seconds after link up to get diagnostic information from |
| 2521 | * the phy */ |
| 2522 | static void igb_update_phy_info(unsigned long data) |
| 2523 | { |
| 2524 | struct igb_adapter *adapter = (struct igb_adapter *) data; |
Alexander Duyck | f5f4cf0 | 2008-11-21 21:30:24 -0800 | [diff] [blame] | 2525 | igb_get_phy_info(&adapter->hw); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2526 | } |
| 2527 | |
| 2528 | /** |
Alexander Duyck | 4d6b725 | 2009-02-06 23:16:24 +0000 | [diff] [blame] | 2529 | * igb_has_link - check shared code for link and determine up/down |
| 2530 | * @adapter: pointer to driver private info |
| 2531 | **/ |
| 2532 | static bool igb_has_link(struct igb_adapter *adapter) |
| 2533 | { |
| 2534 | struct e1000_hw *hw = &adapter->hw; |
| 2535 | bool link_active = false; |
| 2536 | s32 ret_val = 0; |
| 2537 | |
| 2538 | /* get_link_status is set on LSC (link status) interrupt or |
| 2539 | * rx sequence error interrupt. get_link_status will stay |
| 2540 | * false until the e1000_check_for_link establishes link |
| 2541 | * for copper adapters ONLY |
| 2542 | */ |
| 2543 | switch (hw->phy.media_type) { |
| 2544 | case e1000_media_type_copper: |
| 2545 | if (hw->mac.get_link_status) { |
| 2546 | ret_val = hw->mac.ops.check_for_link(hw); |
| 2547 | link_active = !hw->mac.get_link_status; |
| 2548 | } else { |
| 2549 | link_active = true; |
| 2550 | } |
| 2551 | break; |
| 2552 | case e1000_media_type_fiber: |
| 2553 | ret_val = hw->mac.ops.check_for_link(hw); |
| 2554 | link_active = !!(rd32(E1000_STATUS) & E1000_STATUS_LU); |
| 2555 | break; |
| 2556 | case e1000_media_type_internal_serdes: |
| 2557 | ret_val = hw->mac.ops.check_for_link(hw); |
| 2558 | link_active = hw->mac.serdes_has_link; |
| 2559 | break; |
| 2560 | default: |
| 2561 | case e1000_media_type_unknown: |
| 2562 | break; |
| 2563 | } |
| 2564 | |
| 2565 | return link_active; |
| 2566 | } |
| 2567 | |
| 2568 | /** |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2569 | * igb_watchdog - Timer Call-back |
| 2570 | * @data: pointer to adapter cast into an unsigned long |
| 2571 | **/ |
| 2572 | static void igb_watchdog(unsigned long data) |
| 2573 | { |
| 2574 | struct igb_adapter *adapter = (struct igb_adapter *)data; |
| 2575 | /* Do the rest outside of interrupt context */ |
| 2576 | schedule_work(&adapter->watchdog_task); |
| 2577 | } |
| 2578 | |
| 2579 | static void igb_watchdog_task(struct work_struct *work) |
| 2580 | { |
| 2581 | struct igb_adapter *adapter = container_of(work, |
| 2582 | struct igb_adapter, watchdog_task); |
| 2583 | struct e1000_hw *hw = &adapter->hw; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2584 | struct net_device *netdev = adapter->netdev; |
| 2585 | struct igb_ring *tx_ring = adapter->tx_ring; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2586 | u32 link; |
Alexander Duyck | 7a6ea55 | 2008-08-26 04:25:03 -0700 | [diff] [blame] | 2587 | u32 eics = 0; |
Alexander Duyck | 7a6ea55 | 2008-08-26 04:25:03 -0700 | [diff] [blame] | 2588 | int i; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2589 | |
Alexander Duyck | 4d6b725 | 2009-02-06 23:16:24 +0000 | [diff] [blame] | 2590 | link = igb_has_link(adapter); |
| 2591 | if ((netif_carrier_ok(netdev)) && link) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2592 | goto link_up; |
| 2593 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2594 | if (link) { |
| 2595 | if (!netif_carrier_ok(netdev)) { |
| 2596 | u32 ctrl; |
| 2597 | hw->mac.ops.get_speed_and_duplex(&adapter->hw, |
| 2598 | &adapter->link_speed, |
| 2599 | &adapter->link_duplex); |
| 2600 | |
| 2601 | ctrl = rd32(E1000_CTRL); |
Alexander Duyck | 527d47c | 2008-11-27 00:21:39 -0800 | [diff] [blame] | 2602 | /* Links status message must follow this format */ |
| 2603 | printk(KERN_INFO "igb: %s NIC Link is Up %d Mbps %s, " |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2604 | "Flow Control: %s\n", |
Alexander Duyck | 527d47c | 2008-11-27 00:21:39 -0800 | [diff] [blame] | 2605 | netdev->name, |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2606 | adapter->link_speed, |
| 2607 | adapter->link_duplex == FULL_DUPLEX ? |
| 2608 | "Full Duplex" : "Half Duplex", |
| 2609 | ((ctrl & E1000_CTRL_TFCE) && (ctrl & |
| 2610 | E1000_CTRL_RFCE)) ? "RX/TX" : ((ctrl & |
| 2611 | E1000_CTRL_RFCE) ? "RX" : ((ctrl & |
| 2612 | E1000_CTRL_TFCE) ? "TX" : "None"))); |
| 2613 | |
| 2614 | /* tweak tx_queue_len according to speed/duplex and |
| 2615 | * adjust the timeout factor */ |
| 2616 | netdev->tx_queue_len = adapter->tx_queue_len; |
| 2617 | adapter->tx_timeout_factor = 1; |
| 2618 | switch (adapter->link_speed) { |
| 2619 | case SPEED_10: |
| 2620 | netdev->tx_queue_len = 10; |
| 2621 | adapter->tx_timeout_factor = 14; |
| 2622 | break; |
| 2623 | case SPEED_100: |
| 2624 | netdev->tx_queue_len = 100; |
| 2625 | /* maybe add some timeout factor ? */ |
| 2626 | break; |
| 2627 | } |
| 2628 | |
| 2629 | netif_carrier_on(netdev); |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 2630 | netif_tx_wake_all_queues(netdev); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2631 | |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 2632 | igb_ping_all_vfs(adapter); |
| 2633 | |
Alexander Duyck | 4b1a987 | 2009-02-06 23:19:50 +0000 | [diff] [blame] | 2634 | /* link state has changed, schedule phy info update */ |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2635 | if (!test_bit(__IGB_DOWN, &adapter->state)) |
| 2636 | mod_timer(&adapter->phy_info_timer, |
| 2637 | round_jiffies(jiffies + 2 * HZ)); |
| 2638 | } |
| 2639 | } else { |
| 2640 | if (netif_carrier_ok(netdev)) { |
| 2641 | adapter->link_speed = 0; |
| 2642 | adapter->link_duplex = 0; |
Alexander Duyck | 527d47c | 2008-11-27 00:21:39 -0800 | [diff] [blame] | 2643 | /* Links status message must follow this format */ |
| 2644 | printk(KERN_INFO "igb: %s NIC Link is Down\n", |
| 2645 | netdev->name); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2646 | netif_carrier_off(netdev); |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 2647 | netif_tx_stop_all_queues(netdev); |
Alexander Duyck | 4b1a987 | 2009-02-06 23:19:50 +0000 | [diff] [blame] | 2648 | |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 2649 | igb_ping_all_vfs(adapter); |
| 2650 | |
Alexander Duyck | 4b1a987 | 2009-02-06 23:19:50 +0000 | [diff] [blame] | 2651 | /* link state has changed, schedule phy info update */ |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2652 | if (!test_bit(__IGB_DOWN, &adapter->state)) |
| 2653 | mod_timer(&adapter->phy_info_timer, |
| 2654 | round_jiffies(jiffies + 2 * HZ)); |
| 2655 | } |
| 2656 | } |
| 2657 | |
| 2658 | link_up: |
| 2659 | igb_update_stats(adapter); |
| 2660 | |
Alexander Duyck | 4b1a987 | 2009-02-06 23:19:50 +0000 | [diff] [blame] | 2661 | hw->mac.tx_packet_delta = adapter->stats.tpt - adapter->tpt_old; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2662 | adapter->tpt_old = adapter->stats.tpt; |
Alexander Duyck | 4b1a987 | 2009-02-06 23:19:50 +0000 | [diff] [blame] | 2663 | hw->mac.collision_delta = adapter->stats.colc - adapter->colc_old; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2664 | adapter->colc_old = adapter->stats.colc; |
| 2665 | |
| 2666 | adapter->gorc = adapter->stats.gorc - adapter->gorc_old; |
| 2667 | adapter->gorc_old = adapter->stats.gorc; |
| 2668 | adapter->gotc = adapter->stats.gotc - adapter->gotc_old; |
| 2669 | adapter->gotc_old = adapter->stats.gotc; |
| 2670 | |
| 2671 | igb_update_adaptive(&adapter->hw); |
| 2672 | |
| 2673 | if (!netif_carrier_ok(netdev)) { |
| 2674 | if (IGB_DESC_UNUSED(tx_ring) + 1 < tx_ring->count) { |
| 2675 | /* We've lost link, so the controller stops DMA, |
| 2676 | * but we've got queued Tx work that's never going |
| 2677 | * to get done, so reset controller to flush Tx. |
| 2678 | * (Do the reset outside of interrupt context). */ |
| 2679 | adapter->tx_timeout_count++; |
| 2680 | schedule_work(&adapter->reset_task); |
| 2681 | } |
| 2682 | } |
| 2683 | |
| 2684 | /* Cause software interrupt to ensure rx ring is cleaned */ |
Alexander Duyck | 7a6ea55 | 2008-08-26 04:25:03 -0700 | [diff] [blame] | 2685 | if (adapter->msix_entries) { |
| 2686 | for (i = 0; i < adapter->num_rx_queues; i++) |
| 2687 | eics |= adapter->rx_ring[i].eims_value; |
| 2688 | wr32(E1000_EICS, eics); |
| 2689 | } else { |
| 2690 | wr32(E1000_ICS, E1000_ICS_RXDMT0); |
| 2691 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2692 | |
| 2693 | /* Force detection of hung controller every watchdog period */ |
| 2694 | tx_ring->detect_tx_hung = true; |
| 2695 | |
| 2696 | /* Reset the timer */ |
| 2697 | if (!test_bit(__IGB_DOWN, &adapter->state)) |
| 2698 | mod_timer(&adapter->watchdog_timer, |
| 2699 | round_jiffies(jiffies + 2 * HZ)); |
| 2700 | } |
| 2701 | |
| 2702 | enum latency_range { |
| 2703 | lowest_latency = 0, |
| 2704 | low_latency = 1, |
| 2705 | bulk_latency = 2, |
| 2706 | latency_invalid = 255 |
| 2707 | }; |
| 2708 | |
| 2709 | |
Alexander Duyck | 6eb5a7f | 2008-07-08 15:14:44 -0700 | [diff] [blame] | 2710 | /** |
| 2711 | * igb_update_ring_itr - update the dynamic ITR value based on packet size |
| 2712 | * |
| 2713 | * Stores a new ITR value based on strictly on packet size. This |
| 2714 | * algorithm is less sophisticated than that used in igb_update_itr, |
| 2715 | * due to the difficulty of synchronizing statistics across multiple |
| 2716 | * receive rings. The divisors and thresholds used by this fuction |
| 2717 | * were determined based on theoretical maximum wire speed and testing |
| 2718 | * data, in order to minimize response time while increasing bulk |
| 2719 | * throughput. |
| 2720 | * This functionality is controlled by the InterruptThrottleRate module |
| 2721 | * parameter (see igb_param.c) |
| 2722 | * NOTE: This function is called only when operating in a multiqueue |
| 2723 | * receive environment. |
| 2724 | * @rx_ring: pointer to ring |
| 2725 | **/ |
| 2726 | static void igb_update_ring_itr(struct igb_ring *rx_ring) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2727 | { |
Alexander Duyck | 6eb5a7f | 2008-07-08 15:14:44 -0700 | [diff] [blame] | 2728 | int new_val = rx_ring->itr_val; |
| 2729 | int avg_wire_size = 0; |
| 2730 | struct igb_adapter *adapter = rx_ring->adapter; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2731 | |
Alexander Duyck | 6eb5a7f | 2008-07-08 15:14:44 -0700 | [diff] [blame] | 2732 | if (!rx_ring->total_packets) |
| 2733 | goto clear_counts; /* no packets, so don't do anything */ |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2734 | |
Alexander Duyck | 6eb5a7f | 2008-07-08 15:14:44 -0700 | [diff] [blame] | 2735 | /* For non-gigabit speeds, just fix the interrupt rate at 4000 |
| 2736 | * ints/sec - ITR timer value of 120 ticks. |
| 2737 | */ |
| 2738 | if (adapter->link_speed != SPEED_1000) { |
| 2739 | new_val = 120; |
| 2740 | goto set_itr_val; |
| 2741 | } |
| 2742 | avg_wire_size = rx_ring->total_bytes / rx_ring->total_packets; |
| 2743 | |
| 2744 | /* Add 24 bytes to size to account for CRC, preamble, and gap */ |
| 2745 | avg_wire_size += 24; |
| 2746 | |
| 2747 | /* Don't starve jumbo frames */ |
| 2748 | avg_wire_size = min(avg_wire_size, 3000); |
| 2749 | |
| 2750 | /* Give a little boost to mid-size frames */ |
| 2751 | if ((avg_wire_size > 300) && (avg_wire_size < 1200)) |
| 2752 | new_val = avg_wire_size / 3; |
| 2753 | else |
| 2754 | new_val = avg_wire_size / 2; |
| 2755 | |
| 2756 | set_itr_val: |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2757 | if (new_val != rx_ring->itr_val) { |
| 2758 | rx_ring->itr_val = new_val; |
Alexander Duyck | 6eb5a7f | 2008-07-08 15:14:44 -0700 | [diff] [blame] | 2759 | rx_ring->set_itr = 1; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2760 | } |
Alexander Duyck | 6eb5a7f | 2008-07-08 15:14:44 -0700 | [diff] [blame] | 2761 | clear_counts: |
| 2762 | rx_ring->total_bytes = 0; |
| 2763 | rx_ring->total_packets = 0; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2764 | } |
| 2765 | |
| 2766 | /** |
| 2767 | * igb_update_itr - update the dynamic ITR value based on statistics |
| 2768 | * Stores a new ITR value based on packets and byte |
| 2769 | * counts during the last interrupt. The advantage of per interrupt |
| 2770 | * computation is faster updates and more accurate ITR for the current |
| 2771 | * traffic pattern. Constants in this function were computed |
| 2772 | * based on theoretical maximum wire speed and thresholds were set based |
| 2773 | * on testing data as well as attempting to minimize response time |
| 2774 | * while increasing bulk throughput. |
| 2775 | * this functionality is controlled by the InterruptThrottleRate module |
| 2776 | * parameter (see igb_param.c) |
| 2777 | * NOTE: These calculations are only valid when operating in a single- |
| 2778 | * queue environment. |
| 2779 | * @adapter: pointer to adapter |
| 2780 | * @itr_setting: current adapter->itr |
| 2781 | * @packets: the number of packets during this measurement interval |
| 2782 | * @bytes: the number of bytes during this measurement interval |
| 2783 | **/ |
| 2784 | static unsigned int igb_update_itr(struct igb_adapter *adapter, u16 itr_setting, |
| 2785 | int packets, int bytes) |
| 2786 | { |
| 2787 | unsigned int retval = itr_setting; |
| 2788 | |
| 2789 | if (packets == 0) |
| 2790 | goto update_itr_done; |
| 2791 | |
| 2792 | switch (itr_setting) { |
| 2793 | case lowest_latency: |
| 2794 | /* handle TSO and jumbo frames */ |
| 2795 | if (bytes/packets > 8000) |
| 2796 | retval = bulk_latency; |
| 2797 | else if ((packets < 5) && (bytes > 512)) |
| 2798 | retval = low_latency; |
| 2799 | break; |
| 2800 | case low_latency: /* 50 usec aka 20000 ints/s */ |
| 2801 | if (bytes > 10000) { |
| 2802 | /* this if handles the TSO accounting */ |
| 2803 | if (bytes/packets > 8000) { |
| 2804 | retval = bulk_latency; |
| 2805 | } else if ((packets < 10) || ((bytes/packets) > 1200)) { |
| 2806 | retval = bulk_latency; |
| 2807 | } else if ((packets > 35)) { |
| 2808 | retval = lowest_latency; |
| 2809 | } |
| 2810 | } else if (bytes/packets > 2000) { |
| 2811 | retval = bulk_latency; |
| 2812 | } else if (packets <= 2 && bytes < 512) { |
| 2813 | retval = lowest_latency; |
| 2814 | } |
| 2815 | break; |
| 2816 | case bulk_latency: /* 250 usec aka 4000 ints/s */ |
| 2817 | if (bytes > 25000) { |
| 2818 | if (packets > 35) |
| 2819 | retval = low_latency; |
Alexander Duyck | 1e5c3d2 | 2009-02-12 18:17:21 +0000 | [diff] [blame] | 2820 | } else if (bytes < 1500) { |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2821 | retval = low_latency; |
| 2822 | } |
| 2823 | break; |
| 2824 | } |
| 2825 | |
| 2826 | update_itr_done: |
| 2827 | return retval; |
| 2828 | } |
| 2829 | |
Alexander Duyck | 6eb5a7f | 2008-07-08 15:14:44 -0700 | [diff] [blame] | 2830 | static void igb_set_itr(struct igb_adapter *adapter) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2831 | { |
| 2832 | u16 current_itr; |
| 2833 | u32 new_itr = adapter->itr; |
| 2834 | |
| 2835 | /* for non-gigabit speeds, just fix the interrupt rate at 4000 */ |
| 2836 | if (adapter->link_speed != SPEED_1000) { |
| 2837 | current_itr = 0; |
| 2838 | new_itr = 4000; |
| 2839 | goto set_itr_now; |
| 2840 | } |
| 2841 | |
| 2842 | adapter->rx_itr = igb_update_itr(adapter, |
| 2843 | adapter->rx_itr, |
| 2844 | adapter->rx_ring->total_packets, |
| 2845 | adapter->rx_ring->total_bytes); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2846 | |
Alexander Duyck | 6eb5a7f | 2008-07-08 15:14:44 -0700 | [diff] [blame] | 2847 | if (adapter->rx_ring->buddy) { |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2848 | adapter->tx_itr = igb_update_itr(adapter, |
| 2849 | adapter->tx_itr, |
| 2850 | adapter->tx_ring->total_packets, |
| 2851 | adapter->tx_ring->total_bytes); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2852 | current_itr = max(adapter->rx_itr, adapter->tx_itr); |
| 2853 | } else { |
| 2854 | current_itr = adapter->rx_itr; |
| 2855 | } |
| 2856 | |
Alexander Duyck | 6eb5a7f | 2008-07-08 15:14:44 -0700 | [diff] [blame] | 2857 | /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
Alexander Duyck | 73cd78f | 2009-02-12 18:16:59 +0000 | [diff] [blame] | 2858 | if (adapter->itr_setting == 3 && current_itr == lowest_latency) |
Alexander Duyck | 6eb5a7f | 2008-07-08 15:14:44 -0700 | [diff] [blame] | 2859 | current_itr = low_latency; |
| 2860 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2861 | switch (current_itr) { |
| 2862 | /* counts and packets in update_itr are dependent on these numbers */ |
| 2863 | case lowest_latency: |
| 2864 | new_itr = 70000; |
| 2865 | break; |
| 2866 | case low_latency: |
| 2867 | new_itr = 20000; /* aka hwitr = ~200 */ |
| 2868 | break; |
| 2869 | case bulk_latency: |
| 2870 | new_itr = 4000; |
| 2871 | break; |
| 2872 | default: |
| 2873 | break; |
| 2874 | } |
| 2875 | |
| 2876 | set_itr_now: |
Alexander Duyck | 6eb5a7f | 2008-07-08 15:14:44 -0700 | [diff] [blame] | 2877 | adapter->rx_ring->total_bytes = 0; |
| 2878 | adapter->rx_ring->total_packets = 0; |
| 2879 | if (adapter->rx_ring->buddy) { |
| 2880 | adapter->rx_ring->buddy->total_bytes = 0; |
| 2881 | adapter->rx_ring->buddy->total_packets = 0; |
| 2882 | } |
| 2883 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2884 | if (new_itr != adapter->itr) { |
| 2885 | /* this attempts to bias the interrupt rate towards Bulk |
| 2886 | * by adding intermediate steps when interrupt rate is |
| 2887 | * increasing */ |
| 2888 | new_itr = new_itr > adapter->itr ? |
| 2889 | min(adapter->itr + (new_itr >> 2), new_itr) : |
| 2890 | new_itr; |
| 2891 | /* Don't write the value here; it resets the adapter's |
| 2892 | * internal timer, and causes us to delay far longer than |
| 2893 | * we should between interrupts. Instead, we write the ITR |
| 2894 | * value at the beginning of the next interrupt so the timing |
| 2895 | * ends up being correct. |
| 2896 | */ |
| 2897 | adapter->itr = new_itr; |
Alexander Duyck | 6eb5a7f | 2008-07-08 15:14:44 -0700 | [diff] [blame] | 2898 | adapter->rx_ring->itr_val = 1000000000 / (new_itr * 256); |
| 2899 | adapter->rx_ring->set_itr = 1; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2900 | } |
| 2901 | |
| 2902 | return; |
| 2903 | } |
| 2904 | |
| 2905 | |
| 2906 | #define IGB_TX_FLAGS_CSUM 0x00000001 |
| 2907 | #define IGB_TX_FLAGS_VLAN 0x00000002 |
| 2908 | #define IGB_TX_FLAGS_TSO 0x00000004 |
| 2909 | #define IGB_TX_FLAGS_IPV4 0x00000008 |
Patrick Ohly | 33af6bc | 2009-02-12 05:03:43 +0000 | [diff] [blame] | 2910 | #define IGB_TX_FLAGS_TSTAMP 0x00000010 |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2911 | #define IGB_TX_FLAGS_VLAN_MASK 0xffff0000 |
| 2912 | #define IGB_TX_FLAGS_VLAN_SHIFT 16 |
| 2913 | |
| 2914 | static inline int igb_tso_adv(struct igb_adapter *adapter, |
| 2915 | struct igb_ring *tx_ring, |
| 2916 | struct sk_buff *skb, u32 tx_flags, u8 *hdr_len) |
| 2917 | { |
| 2918 | struct e1000_adv_tx_context_desc *context_desc; |
| 2919 | unsigned int i; |
| 2920 | int err; |
| 2921 | struct igb_buffer *buffer_info; |
| 2922 | u32 info = 0, tu_cmd = 0; |
| 2923 | u32 mss_l4len_idx, l4len; |
| 2924 | *hdr_len = 0; |
| 2925 | |
| 2926 | if (skb_header_cloned(skb)) { |
| 2927 | err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); |
| 2928 | if (err) |
| 2929 | return err; |
| 2930 | } |
| 2931 | |
| 2932 | l4len = tcp_hdrlen(skb); |
| 2933 | *hdr_len += l4len; |
| 2934 | |
| 2935 | if (skb->protocol == htons(ETH_P_IP)) { |
| 2936 | struct iphdr *iph = ip_hdr(skb); |
| 2937 | iph->tot_len = 0; |
| 2938 | iph->check = 0; |
| 2939 | tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, |
| 2940 | iph->daddr, 0, |
| 2941 | IPPROTO_TCP, |
| 2942 | 0); |
| 2943 | } else if (skb_shinfo(skb)->gso_type == SKB_GSO_TCPV6) { |
| 2944 | ipv6_hdr(skb)->payload_len = 0; |
| 2945 | tcp_hdr(skb)->check = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, |
| 2946 | &ipv6_hdr(skb)->daddr, |
| 2947 | 0, IPPROTO_TCP, 0); |
| 2948 | } |
| 2949 | |
| 2950 | i = tx_ring->next_to_use; |
| 2951 | |
| 2952 | buffer_info = &tx_ring->buffer_info[i]; |
| 2953 | context_desc = E1000_TX_CTXTDESC_ADV(*tx_ring, i); |
| 2954 | /* VLAN MACLEN IPLEN */ |
| 2955 | if (tx_flags & IGB_TX_FLAGS_VLAN) |
| 2956 | info |= (tx_flags & IGB_TX_FLAGS_VLAN_MASK); |
| 2957 | info |= (skb_network_offset(skb) << E1000_ADVTXD_MACLEN_SHIFT); |
| 2958 | *hdr_len += skb_network_offset(skb); |
| 2959 | info |= skb_network_header_len(skb); |
| 2960 | *hdr_len += skb_network_header_len(skb); |
| 2961 | context_desc->vlan_macip_lens = cpu_to_le32(info); |
| 2962 | |
| 2963 | /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */ |
| 2964 | tu_cmd |= (E1000_TXD_CMD_DEXT | E1000_ADVTXD_DTYP_CTXT); |
| 2965 | |
| 2966 | if (skb->protocol == htons(ETH_P_IP)) |
| 2967 | tu_cmd |= E1000_ADVTXD_TUCMD_IPV4; |
| 2968 | tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP; |
| 2969 | |
| 2970 | context_desc->type_tucmd_mlhl = cpu_to_le32(tu_cmd); |
| 2971 | |
| 2972 | /* MSS L4LEN IDX */ |
| 2973 | mss_l4len_idx = (skb_shinfo(skb)->gso_size << E1000_ADVTXD_MSS_SHIFT); |
| 2974 | mss_l4len_idx |= (l4len << E1000_ADVTXD_L4LEN_SHIFT); |
| 2975 | |
Alexander Duyck | 73cd78f | 2009-02-12 18:16:59 +0000 | [diff] [blame] | 2976 | /* For 82575, context index must be unique per ring. */ |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 2977 | if (adapter->flags & IGB_FLAG_NEED_CTX_IDX) |
| 2978 | mss_l4len_idx |= tx_ring->queue_index << 4; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2979 | |
| 2980 | context_desc->mss_l4len_idx = cpu_to_le32(mss_l4len_idx); |
| 2981 | context_desc->seqnum_seed = 0; |
| 2982 | |
| 2983 | buffer_info->time_stamp = jiffies; |
Alexander Duyck | 0e014cb | 2008-12-26 01:33:18 -0800 | [diff] [blame] | 2984 | buffer_info->next_to_watch = i; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2985 | buffer_info->dma = 0; |
| 2986 | i++; |
| 2987 | if (i == tx_ring->count) |
| 2988 | i = 0; |
| 2989 | |
| 2990 | tx_ring->next_to_use = i; |
| 2991 | |
| 2992 | return true; |
| 2993 | } |
| 2994 | |
| 2995 | static inline bool igb_tx_csum_adv(struct igb_adapter *adapter, |
| 2996 | struct igb_ring *tx_ring, |
| 2997 | struct sk_buff *skb, u32 tx_flags) |
| 2998 | { |
| 2999 | struct e1000_adv_tx_context_desc *context_desc; |
| 3000 | unsigned int i; |
| 3001 | struct igb_buffer *buffer_info; |
| 3002 | u32 info = 0, tu_cmd = 0; |
| 3003 | |
| 3004 | if ((skb->ip_summed == CHECKSUM_PARTIAL) || |
| 3005 | (tx_flags & IGB_TX_FLAGS_VLAN)) { |
| 3006 | i = tx_ring->next_to_use; |
| 3007 | buffer_info = &tx_ring->buffer_info[i]; |
| 3008 | context_desc = E1000_TX_CTXTDESC_ADV(*tx_ring, i); |
| 3009 | |
| 3010 | if (tx_flags & IGB_TX_FLAGS_VLAN) |
| 3011 | info |= (tx_flags & IGB_TX_FLAGS_VLAN_MASK); |
| 3012 | info |= (skb_network_offset(skb) << E1000_ADVTXD_MACLEN_SHIFT); |
| 3013 | if (skb->ip_summed == CHECKSUM_PARTIAL) |
| 3014 | info |= skb_network_header_len(skb); |
| 3015 | |
| 3016 | context_desc->vlan_macip_lens = cpu_to_le32(info); |
| 3017 | |
| 3018 | tu_cmd |= (E1000_TXD_CMD_DEXT | E1000_ADVTXD_DTYP_CTXT); |
| 3019 | |
| 3020 | if (skb->ip_summed == CHECKSUM_PARTIAL) { |
Mitch Williams | 44b0cda | 2008-03-07 10:32:13 -0800 | [diff] [blame] | 3021 | switch (skb->protocol) { |
Harvey Harrison | 09640e6 | 2009-02-01 00:45:17 -0800 | [diff] [blame] | 3022 | case cpu_to_be16(ETH_P_IP): |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3023 | tu_cmd |= E1000_ADVTXD_TUCMD_IPV4; |
Mitch Williams | 44b0cda | 2008-03-07 10:32:13 -0800 | [diff] [blame] | 3024 | if (ip_hdr(skb)->protocol == IPPROTO_TCP) |
| 3025 | tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP; |
| 3026 | break; |
Harvey Harrison | 09640e6 | 2009-02-01 00:45:17 -0800 | [diff] [blame] | 3027 | case cpu_to_be16(ETH_P_IPV6): |
Mitch Williams | 44b0cda | 2008-03-07 10:32:13 -0800 | [diff] [blame] | 3028 | /* XXX what about other V6 headers?? */ |
| 3029 | if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP) |
| 3030 | tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP; |
| 3031 | break; |
| 3032 | default: |
| 3033 | if (unlikely(net_ratelimit())) |
| 3034 | dev_warn(&adapter->pdev->dev, |
| 3035 | "partial checksum but proto=%x!\n", |
| 3036 | skb->protocol); |
| 3037 | break; |
| 3038 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3039 | } |
| 3040 | |
| 3041 | context_desc->type_tucmd_mlhl = cpu_to_le32(tu_cmd); |
| 3042 | context_desc->seqnum_seed = 0; |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 3043 | if (adapter->flags & IGB_FLAG_NEED_CTX_IDX) |
| 3044 | context_desc->mss_l4len_idx = |
| 3045 | cpu_to_le32(tx_ring->queue_index << 4); |
Alexander Duyck | 265de40 | 2009-02-06 23:22:52 +0000 | [diff] [blame] | 3046 | else |
| 3047 | context_desc->mss_l4len_idx = 0; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3048 | |
| 3049 | buffer_info->time_stamp = jiffies; |
Alexander Duyck | 0e014cb | 2008-12-26 01:33:18 -0800 | [diff] [blame] | 3050 | buffer_info->next_to_watch = i; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3051 | buffer_info->dma = 0; |
| 3052 | |
| 3053 | i++; |
| 3054 | if (i == tx_ring->count) |
| 3055 | i = 0; |
| 3056 | tx_ring->next_to_use = i; |
| 3057 | |
| 3058 | return true; |
| 3059 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3060 | return false; |
| 3061 | } |
| 3062 | |
| 3063 | #define IGB_MAX_TXD_PWR 16 |
| 3064 | #define IGB_MAX_DATA_PER_TXD (1<<IGB_MAX_TXD_PWR) |
| 3065 | |
| 3066 | static inline int igb_tx_map_adv(struct igb_adapter *adapter, |
Alexander Duyck | 0e014cb | 2008-12-26 01:33:18 -0800 | [diff] [blame] | 3067 | struct igb_ring *tx_ring, struct sk_buff *skb, |
| 3068 | unsigned int first) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3069 | { |
| 3070 | struct igb_buffer *buffer_info; |
| 3071 | unsigned int len = skb_headlen(skb); |
| 3072 | unsigned int count = 0, i; |
| 3073 | unsigned int f; |
| 3074 | |
| 3075 | i = tx_ring->next_to_use; |
| 3076 | |
| 3077 | buffer_info = &tx_ring->buffer_info[i]; |
| 3078 | BUG_ON(len >= IGB_MAX_DATA_PER_TXD); |
| 3079 | buffer_info->length = len; |
| 3080 | /* set time_stamp *before* dma to help avoid a possible race */ |
| 3081 | buffer_info->time_stamp = jiffies; |
Alexander Duyck | 0e014cb | 2008-12-26 01:33:18 -0800 | [diff] [blame] | 3082 | buffer_info->next_to_watch = i; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3083 | buffer_info->dma = pci_map_single(adapter->pdev, skb->data, len, |
| 3084 | PCI_DMA_TODEVICE); |
| 3085 | count++; |
| 3086 | i++; |
| 3087 | if (i == tx_ring->count) |
| 3088 | i = 0; |
| 3089 | |
| 3090 | for (f = 0; f < skb_shinfo(skb)->nr_frags; f++) { |
| 3091 | struct skb_frag_struct *frag; |
| 3092 | |
| 3093 | frag = &skb_shinfo(skb)->frags[f]; |
| 3094 | len = frag->size; |
| 3095 | |
| 3096 | buffer_info = &tx_ring->buffer_info[i]; |
| 3097 | BUG_ON(len >= IGB_MAX_DATA_PER_TXD); |
| 3098 | buffer_info->length = len; |
| 3099 | buffer_info->time_stamp = jiffies; |
Alexander Duyck | 0e014cb | 2008-12-26 01:33:18 -0800 | [diff] [blame] | 3100 | buffer_info->next_to_watch = i; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3101 | buffer_info->dma = pci_map_page(adapter->pdev, |
| 3102 | frag->page, |
| 3103 | frag->page_offset, |
| 3104 | len, |
| 3105 | PCI_DMA_TODEVICE); |
| 3106 | |
| 3107 | count++; |
| 3108 | i++; |
| 3109 | if (i == tx_ring->count) |
| 3110 | i = 0; |
| 3111 | } |
| 3112 | |
Alexander Duyck | 0e014cb | 2008-12-26 01:33:18 -0800 | [diff] [blame] | 3113 | i = ((i == 0) ? tx_ring->count - 1 : i - 1); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3114 | tx_ring->buffer_info[i].skb = skb; |
Alexander Duyck | 0e014cb | 2008-12-26 01:33:18 -0800 | [diff] [blame] | 3115 | tx_ring->buffer_info[first].next_to_watch = i; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3116 | |
| 3117 | return count; |
| 3118 | } |
| 3119 | |
| 3120 | static inline void igb_tx_queue_adv(struct igb_adapter *adapter, |
| 3121 | struct igb_ring *tx_ring, |
| 3122 | int tx_flags, int count, u32 paylen, |
| 3123 | u8 hdr_len) |
| 3124 | { |
| 3125 | union e1000_adv_tx_desc *tx_desc = NULL; |
| 3126 | struct igb_buffer *buffer_info; |
| 3127 | u32 olinfo_status = 0, cmd_type_len; |
| 3128 | unsigned int i; |
| 3129 | |
| 3130 | cmd_type_len = (E1000_ADVTXD_DTYP_DATA | E1000_ADVTXD_DCMD_IFCS | |
| 3131 | E1000_ADVTXD_DCMD_DEXT); |
| 3132 | |
| 3133 | if (tx_flags & IGB_TX_FLAGS_VLAN) |
| 3134 | cmd_type_len |= E1000_ADVTXD_DCMD_VLE; |
| 3135 | |
Patrick Ohly | 33af6bc | 2009-02-12 05:03:43 +0000 | [diff] [blame] | 3136 | if (tx_flags & IGB_TX_FLAGS_TSTAMP) |
| 3137 | cmd_type_len |= E1000_ADVTXD_MAC_TSTAMP; |
| 3138 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3139 | if (tx_flags & IGB_TX_FLAGS_TSO) { |
| 3140 | cmd_type_len |= E1000_ADVTXD_DCMD_TSE; |
| 3141 | |
| 3142 | /* insert tcp checksum */ |
| 3143 | olinfo_status |= E1000_TXD_POPTS_TXSM << 8; |
| 3144 | |
| 3145 | /* insert ip checksum */ |
| 3146 | if (tx_flags & IGB_TX_FLAGS_IPV4) |
| 3147 | olinfo_status |= E1000_TXD_POPTS_IXSM << 8; |
| 3148 | |
| 3149 | } else if (tx_flags & IGB_TX_FLAGS_CSUM) { |
| 3150 | olinfo_status |= E1000_TXD_POPTS_TXSM << 8; |
| 3151 | } |
| 3152 | |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 3153 | if ((adapter->flags & IGB_FLAG_NEED_CTX_IDX) && |
| 3154 | (tx_flags & (IGB_TX_FLAGS_CSUM | IGB_TX_FLAGS_TSO | |
| 3155 | IGB_TX_FLAGS_VLAN))) |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 3156 | olinfo_status |= tx_ring->queue_index << 4; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3157 | |
| 3158 | olinfo_status |= ((paylen - hdr_len) << E1000_ADVTXD_PAYLEN_SHIFT); |
| 3159 | |
| 3160 | i = tx_ring->next_to_use; |
| 3161 | while (count--) { |
| 3162 | buffer_info = &tx_ring->buffer_info[i]; |
| 3163 | tx_desc = E1000_TX_DESC_ADV(*tx_ring, i); |
| 3164 | tx_desc->read.buffer_addr = cpu_to_le64(buffer_info->dma); |
| 3165 | tx_desc->read.cmd_type_len = |
| 3166 | cpu_to_le32(cmd_type_len | buffer_info->length); |
| 3167 | tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status); |
| 3168 | i++; |
| 3169 | if (i == tx_ring->count) |
| 3170 | i = 0; |
| 3171 | } |
| 3172 | |
| 3173 | tx_desc->read.cmd_type_len |= cpu_to_le32(adapter->txd_cmd); |
| 3174 | /* Force memory writes to complete before letting h/w |
| 3175 | * know there are new descriptors to fetch. (Only |
| 3176 | * applicable for weak-ordered memory model archs, |
| 3177 | * such as IA-64). */ |
| 3178 | wmb(); |
| 3179 | |
| 3180 | tx_ring->next_to_use = i; |
| 3181 | writel(i, adapter->hw.hw_addr + tx_ring->tail); |
| 3182 | /* we need this if more than one processor can write to our tail |
| 3183 | * at a time, it syncronizes IO on IA64/Altix systems */ |
| 3184 | mmiowb(); |
| 3185 | } |
| 3186 | |
| 3187 | static int __igb_maybe_stop_tx(struct net_device *netdev, |
| 3188 | struct igb_ring *tx_ring, int size) |
| 3189 | { |
| 3190 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 3191 | |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 3192 | netif_stop_subqueue(netdev, tx_ring->queue_index); |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 3193 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3194 | /* Herbert's original patch had: |
| 3195 | * smp_mb__after_netif_stop_queue(); |
| 3196 | * but since that doesn't exist yet, just open code it. */ |
| 3197 | smp_mb(); |
| 3198 | |
| 3199 | /* We need to check again in a case another CPU has just |
| 3200 | * made room available. */ |
| 3201 | if (IGB_DESC_UNUSED(tx_ring) < size) |
| 3202 | return -EBUSY; |
| 3203 | |
| 3204 | /* A reprieve! */ |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 3205 | netif_wake_subqueue(netdev, tx_ring->queue_index); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3206 | ++adapter->restart_queue; |
| 3207 | return 0; |
| 3208 | } |
| 3209 | |
| 3210 | static int igb_maybe_stop_tx(struct net_device *netdev, |
| 3211 | struct igb_ring *tx_ring, int size) |
| 3212 | { |
| 3213 | if (IGB_DESC_UNUSED(tx_ring) >= size) |
| 3214 | return 0; |
| 3215 | return __igb_maybe_stop_tx(netdev, tx_ring, size); |
| 3216 | } |
| 3217 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3218 | static int igb_xmit_frame_ring_adv(struct sk_buff *skb, |
| 3219 | struct net_device *netdev, |
| 3220 | struct igb_ring *tx_ring) |
| 3221 | { |
| 3222 | struct igb_adapter *adapter = netdev_priv(netdev); |
Alexander Duyck | 0e014cb | 2008-12-26 01:33:18 -0800 | [diff] [blame] | 3223 | unsigned int first; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3224 | unsigned int tx_flags = 0; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3225 | u8 hdr_len = 0; |
| 3226 | int tso = 0; |
Patrick Ohly | 33af6bc | 2009-02-12 05:03:43 +0000 | [diff] [blame] | 3227 | union skb_shared_tx *shtx; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3228 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3229 | if (test_bit(__IGB_DOWN, &adapter->state)) { |
| 3230 | dev_kfree_skb_any(skb); |
| 3231 | return NETDEV_TX_OK; |
| 3232 | } |
| 3233 | |
| 3234 | if (skb->len <= 0) { |
| 3235 | dev_kfree_skb_any(skb); |
| 3236 | return NETDEV_TX_OK; |
| 3237 | } |
| 3238 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3239 | /* need: 1 descriptor per page, |
| 3240 | * + 2 desc gap to keep tail from touching head, |
| 3241 | * + 1 desc for skb->data, |
| 3242 | * + 1 desc for context descriptor, |
| 3243 | * otherwise try next time */ |
| 3244 | if (igb_maybe_stop_tx(netdev, tx_ring, skb_shinfo(skb)->nr_frags + 4)) { |
| 3245 | /* this is a hard error */ |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3246 | return NETDEV_TX_BUSY; |
| 3247 | } |
Patrick Ohly | 33af6bc | 2009-02-12 05:03:43 +0000 | [diff] [blame] | 3248 | |
| 3249 | /* |
| 3250 | * TODO: check that there currently is no other packet with |
| 3251 | * time stamping in the queue |
| 3252 | * |
| 3253 | * When doing time stamping, keep the connection to the socket |
| 3254 | * a while longer: it is still needed by skb_hwtstamp_tx(), |
| 3255 | * called either in igb_tx_hwtstamp() or by our caller when |
| 3256 | * doing software time stamping. |
| 3257 | */ |
| 3258 | shtx = skb_tx(skb); |
| 3259 | if (unlikely(shtx->hardware)) { |
| 3260 | shtx->in_progress = 1; |
| 3261 | tx_flags |= IGB_TX_FLAGS_TSTAMP; |
Patrick Ohly | 33af6bc | 2009-02-12 05:03:43 +0000 | [diff] [blame] | 3262 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3263 | |
| 3264 | if (adapter->vlgrp && vlan_tx_tag_present(skb)) { |
| 3265 | tx_flags |= IGB_TX_FLAGS_VLAN; |
| 3266 | tx_flags |= (vlan_tx_tag_get(skb) << IGB_TX_FLAGS_VLAN_SHIFT); |
| 3267 | } |
| 3268 | |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 3269 | if (skb->protocol == htons(ETH_P_IP)) |
| 3270 | tx_flags |= IGB_TX_FLAGS_IPV4; |
| 3271 | |
Alexander Duyck | 0e014cb | 2008-12-26 01:33:18 -0800 | [diff] [blame] | 3272 | first = tx_ring->next_to_use; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3273 | tso = skb_is_gso(skb) ? igb_tso_adv(adapter, tx_ring, skb, tx_flags, |
| 3274 | &hdr_len) : 0; |
| 3275 | |
| 3276 | if (tso < 0) { |
| 3277 | dev_kfree_skb_any(skb); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3278 | return NETDEV_TX_OK; |
| 3279 | } |
| 3280 | |
| 3281 | if (tso) |
| 3282 | tx_flags |= IGB_TX_FLAGS_TSO; |
Alexander Duyck | bc1cbd3 | 2009-02-13 14:45:17 +0000 | [diff] [blame] | 3283 | else if (igb_tx_csum_adv(adapter, tx_ring, skb, tx_flags) && |
| 3284 | (skb->ip_summed == CHECKSUM_PARTIAL)) |
| 3285 | tx_flags |= IGB_TX_FLAGS_CSUM; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3286 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3287 | igb_tx_queue_adv(adapter, tx_ring, tx_flags, |
Alexander Duyck | 0e014cb | 2008-12-26 01:33:18 -0800 | [diff] [blame] | 3288 | igb_tx_map_adv(adapter, tx_ring, skb, first), |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3289 | skb->len, hdr_len); |
| 3290 | |
| 3291 | netdev->trans_start = jiffies; |
| 3292 | |
| 3293 | /* Make sure there is space in the ring for the next send. */ |
| 3294 | igb_maybe_stop_tx(netdev, tx_ring, MAX_SKB_FRAGS + 4); |
| 3295 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3296 | return NETDEV_TX_OK; |
| 3297 | } |
| 3298 | |
| 3299 | static int igb_xmit_frame_adv(struct sk_buff *skb, struct net_device *netdev) |
| 3300 | { |
| 3301 | struct igb_adapter *adapter = netdev_priv(netdev); |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 3302 | struct igb_ring *tx_ring; |
| 3303 | |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 3304 | int r_idx = 0; |
Alexander Duyck | 1bfaf07 | 2009-02-19 20:39:23 -0800 | [diff] [blame] | 3305 | r_idx = skb->queue_mapping & (IGB_ABS_MAX_TX_QUEUES - 1); |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 3306 | tx_ring = adapter->multi_tx_table[r_idx]; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3307 | |
| 3308 | /* This goes back to the question of how to logically map a tx queue |
| 3309 | * to a flow. Right now, performance is impacted slightly negatively |
| 3310 | * if using multiple tx queues. If the stack breaks away from a |
| 3311 | * single qdisc implementation, we can look at this again. */ |
| 3312 | return (igb_xmit_frame_ring_adv(skb, netdev, tx_ring)); |
| 3313 | } |
| 3314 | |
| 3315 | /** |
| 3316 | * igb_tx_timeout - Respond to a Tx Hang |
| 3317 | * @netdev: network interface device structure |
| 3318 | **/ |
| 3319 | static void igb_tx_timeout(struct net_device *netdev) |
| 3320 | { |
| 3321 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 3322 | struct e1000_hw *hw = &adapter->hw; |
| 3323 | |
| 3324 | /* Do the reset outside of interrupt context */ |
| 3325 | adapter->tx_timeout_count++; |
| 3326 | schedule_work(&adapter->reset_task); |
Alexander Duyck | 265de40 | 2009-02-06 23:22:52 +0000 | [diff] [blame] | 3327 | wr32(E1000_EICS, |
| 3328 | (adapter->eims_enable_mask & ~adapter->eims_other)); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3329 | } |
| 3330 | |
| 3331 | static void igb_reset_task(struct work_struct *work) |
| 3332 | { |
| 3333 | struct igb_adapter *adapter; |
| 3334 | adapter = container_of(work, struct igb_adapter, reset_task); |
| 3335 | |
| 3336 | igb_reinit_locked(adapter); |
| 3337 | } |
| 3338 | |
| 3339 | /** |
| 3340 | * igb_get_stats - Get System Network Statistics |
| 3341 | * @netdev: network interface device structure |
| 3342 | * |
| 3343 | * Returns the address of the device statistics structure. |
| 3344 | * The statistics are actually updated from the timer callback. |
| 3345 | **/ |
Alexander Duyck | 73cd78f | 2009-02-12 18:16:59 +0000 | [diff] [blame] | 3346 | static struct net_device_stats *igb_get_stats(struct net_device *netdev) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3347 | { |
| 3348 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 3349 | |
| 3350 | /* only return the current stats */ |
| 3351 | return &adapter->net_stats; |
| 3352 | } |
| 3353 | |
| 3354 | /** |
| 3355 | * igb_change_mtu - Change the Maximum Transfer Unit |
| 3356 | * @netdev: network interface device structure |
| 3357 | * @new_mtu: new value for maximum frame size |
| 3358 | * |
| 3359 | * Returns 0 on success, negative on failure |
| 3360 | **/ |
| 3361 | static int igb_change_mtu(struct net_device *netdev, int new_mtu) |
| 3362 | { |
| 3363 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 3364 | int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN; |
| 3365 | |
| 3366 | if ((max_frame < ETH_ZLEN + ETH_FCS_LEN) || |
| 3367 | (max_frame > MAX_JUMBO_FRAME_SIZE)) { |
| 3368 | dev_err(&adapter->pdev->dev, "Invalid MTU setting\n"); |
| 3369 | return -EINVAL; |
| 3370 | } |
| 3371 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3372 | if (max_frame > MAX_STD_JUMBO_FRAME_SIZE) { |
| 3373 | dev_err(&adapter->pdev->dev, "MTU > 9216 not supported.\n"); |
| 3374 | return -EINVAL; |
| 3375 | } |
| 3376 | |
| 3377 | while (test_and_set_bit(__IGB_RESETTING, &adapter->state)) |
| 3378 | msleep(1); |
Alexander Duyck | 73cd78f | 2009-02-12 18:16:59 +0000 | [diff] [blame] | 3379 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3380 | /* igb_down has a dependency on max_frame_size */ |
| 3381 | adapter->max_frame_size = max_frame; |
| 3382 | if (netif_running(netdev)) |
| 3383 | igb_down(adapter); |
| 3384 | |
| 3385 | /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN |
| 3386 | * means we reserve 2 more, this pushes us to allocate from the next |
| 3387 | * larger slab size. |
| 3388 | * i.e. RXBUFFER_2048 --> size-4096 slab |
| 3389 | */ |
| 3390 | |
| 3391 | if (max_frame <= IGB_RXBUFFER_256) |
| 3392 | adapter->rx_buffer_len = IGB_RXBUFFER_256; |
| 3393 | else if (max_frame <= IGB_RXBUFFER_512) |
| 3394 | adapter->rx_buffer_len = IGB_RXBUFFER_512; |
| 3395 | else if (max_frame <= IGB_RXBUFFER_1024) |
| 3396 | adapter->rx_buffer_len = IGB_RXBUFFER_1024; |
| 3397 | else if (max_frame <= IGB_RXBUFFER_2048) |
| 3398 | adapter->rx_buffer_len = IGB_RXBUFFER_2048; |
| 3399 | else |
Alexander Duyck | bf36c1a | 2008-07-08 15:11:40 -0700 | [diff] [blame] | 3400 | #if (PAGE_SIZE / 2) > IGB_RXBUFFER_16384 |
| 3401 | adapter->rx_buffer_len = IGB_RXBUFFER_16384; |
| 3402 | #else |
| 3403 | adapter->rx_buffer_len = PAGE_SIZE / 2; |
| 3404 | #endif |
Alexander Duyck | e173952 | 2009-02-19 20:39:44 -0800 | [diff] [blame] | 3405 | |
| 3406 | /* if sr-iov is enabled we need to force buffer size to 1K or larger */ |
| 3407 | if (adapter->vfs_allocated_count && |
| 3408 | (adapter->rx_buffer_len < IGB_RXBUFFER_1024)) |
| 3409 | adapter->rx_buffer_len = IGB_RXBUFFER_1024; |
| 3410 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3411 | /* adjust allocation if LPE protects us, and we aren't using SBP */ |
| 3412 | if ((max_frame == ETH_FRAME_LEN + ETH_FCS_LEN) || |
| 3413 | (max_frame == MAXIMUM_ETHERNET_VLAN_SIZE)) |
| 3414 | adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE; |
| 3415 | |
| 3416 | dev_info(&adapter->pdev->dev, "changing MTU from %d to %d\n", |
| 3417 | netdev->mtu, new_mtu); |
| 3418 | netdev->mtu = new_mtu; |
| 3419 | |
| 3420 | if (netif_running(netdev)) |
| 3421 | igb_up(adapter); |
| 3422 | else |
| 3423 | igb_reset(adapter); |
| 3424 | |
| 3425 | clear_bit(__IGB_RESETTING, &adapter->state); |
| 3426 | |
| 3427 | return 0; |
| 3428 | } |
| 3429 | |
| 3430 | /** |
| 3431 | * igb_update_stats - Update the board statistics counters |
| 3432 | * @adapter: board private structure |
| 3433 | **/ |
| 3434 | |
| 3435 | void igb_update_stats(struct igb_adapter *adapter) |
| 3436 | { |
| 3437 | struct e1000_hw *hw = &adapter->hw; |
| 3438 | struct pci_dev *pdev = adapter->pdev; |
| 3439 | u16 phy_tmp; |
| 3440 | |
| 3441 | #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF |
| 3442 | |
| 3443 | /* |
| 3444 | * Prevent stats update while adapter is being reset, or if the pci |
| 3445 | * connection is down. |
| 3446 | */ |
| 3447 | if (adapter->link_speed == 0) |
| 3448 | return; |
| 3449 | if (pci_channel_offline(pdev)) |
| 3450 | return; |
| 3451 | |
| 3452 | adapter->stats.crcerrs += rd32(E1000_CRCERRS); |
| 3453 | adapter->stats.gprc += rd32(E1000_GPRC); |
| 3454 | adapter->stats.gorc += rd32(E1000_GORCL); |
| 3455 | rd32(E1000_GORCH); /* clear GORCL */ |
| 3456 | adapter->stats.bprc += rd32(E1000_BPRC); |
| 3457 | adapter->stats.mprc += rd32(E1000_MPRC); |
| 3458 | adapter->stats.roc += rd32(E1000_ROC); |
| 3459 | |
| 3460 | adapter->stats.prc64 += rd32(E1000_PRC64); |
| 3461 | adapter->stats.prc127 += rd32(E1000_PRC127); |
| 3462 | adapter->stats.prc255 += rd32(E1000_PRC255); |
| 3463 | adapter->stats.prc511 += rd32(E1000_PRC511); |
| 3464 | adapter->stats.prc1023 += rd32(E1000_PRC1023); |
| 3465 | adapter->stats.prc1522 += rd32(E1000_PRC1522); |
| 3466 | adapter->stats.symerrs += rd32(E1000_SYMERRS); |
| 3467 | adapter->stats.sec += rd32(E1000_SEC); |
| 3468 | |
| 3469 | adapter->stats.mpc += rd32(E1000_MPC); |
| 3470 | adapter->stats.scc += rd32(E1000_SCC); |
| 3471 | adapter->stats.ecol += rd32(E1000_ECOL); |
| 3472 | adapter->stats.mcc += rd32(E1000_MCC); |
| 3473 | adapter->stats.latecol += rd32(E1000_LATECOL); |
| 3474 | adapter->stats.dc += rd32(E1000_DC); |
| 3475 | adapter->stats.rlec += rd32(E1000_RLEC); |
| 3476 | adapter->stats.xonrxc += rd32(E1000_XONRXC); |
| 3477 | adapter->stats.xontxc += rd32(E1000_XONTXC); |
| 3478 | adapter->stats.xoffrxc += rd32(E1000_XOFFRXC); |
| 3479 | adapter->stats.xofftxc += rd32(E1000_XOFFTXC); |
| 3480 | adapter->stats.fcruc += rd32(E1000_FCRUC); |
| 3481 | adapter->stats.gptc += rd32(E1000_GPTC); |
| 3482 | adapter->stats.gotc += rd32(E1000_GOTCL); |
| 3483 | rd32(E1000_GOTCH); /* clear GOTCL */ |
| 3484 | adapter->stats.rnbc += rd32(E1000_RNBC); |
| 3485 | adapter->stats.ruc += rd32(E1000_RUC); |
| 3486 | adapter->stats.rfc += rd32(E1000_RFC); |
| 3487 | adapter->stats.rjc += rd32(E1000_RJC); |
| 3488 | adapter->stats.tor += rd32(E1000_TORH); |
| 3489 | adapter->stats.tot += rd32(E1000_TOTH); |
| 3490 | adapter->stats.tpr += rd32(E1000_TPR); |
| 3491 | |
| 3492 | adapter->stats.ptc64 += rd32(E1000_PTC64); |
| 3493 | adapter->stats.ptc127 += rd32(E1000_PTC127); |
| 3494 | adapter->stats.ptc255 += rd32(E1000_PTC255); |
| 3495 | adapter->stats.ptc511 += rd32(E1000_PTC511); |
| 3496 | adapter->stats.ptc1023 += rd32(E1000_PTC1023); |
| 3497 | adapter->stats.ptc1522 += rd32(E1000_PTC1522); |
| 3498 | |
| 3499 | adapter->stats.mptc += rd32(E1000_MPTC); |
| 3500 | adapter->stats.bptc += rd32(E1000_BPTC); |
| 3501 | |
| 3502 | /* used for adaptive IFS */ |
| 3503 | |
| 3504 | hw->mac.tx_packet_delta = rd32(E1000_TPT); |
| 3505 | adapter->stats.tpt += hw->mac.tx_packet_delta; |
| 3506 | hw->mac.collision_delta = rd32(E1000_COLC); |
| 3507 | adapter->stats.colc += hw->mac.collision_delta; |
| 3508 | |
| 3509 | adapter->stats.algnerrc += rd32(E1000_ALGNERRC); |
| 3510 | adapter->stats.rxerrc += rd32(E1000_RXERRC); |
| 3511 | adapter->stats.tncrs += rd32(E1000_TNCRS); |
| 3512 | adapter->stats.tsctc += rd32(E1000_TSCTC); |
| 3513 | adapter->stats.tsctfc += rd32(E1000_TSCTFC); |
| 3514 | |
| 3515 | adapter->stats.iac += rd32(E1000_IAC); |
| 3516 | adapter->stats.icrxoc += rd32(E1000_ICRXOC); |
| 3517 | adapter->stats.icrxptc += rd32(E1000_ICRXPTC); |
| 3518 | adapter->stats.icrxatc += rd32(E1000_ICRXATC); |
| 3519 | adapter->stats.ictxptc += rd32(E1000_ICTXPTC); |
| 3520 | adapter->stats.ictxatc += rd32(E1000_ICTXATC); |
| 3521 | adapter->stats.ictxqec += rd32(E1000_ICTXQEC); |
| 3522 | adapter->stats.ictxqmtc += rd32(E1000_ICTXQMTC); |
| 3523 | adapter->stats.icrxdmtc += rd32(E1000_ICRXDMTC); |
| 3524 | |
| 3525 | /* Fill out the OS statistics structure */ |
| 3526 | adapter->net_stats.multicast = adapter->stats.mprc; |
| 3527 | adapter->net_stats.collisions = adapter->stats.colc; |
| 3528 | |
| 3529 | /* Rx Errors */ |
| 3530 | |
| 3531 | /* RLEC on some newer hardware can be incorrect so build |
| 3532 | * our own version based on RUC and ROC */ |
| 3533 | adapter->net_stats.rx_errors = adapter->stats.rxerrc + |
| 3534 | adapter->stats.crcerrs + adapter->stats.algnerrc + |
| 3535 | adapter->stats.ruc + adapter->stats.roc + |
| 3536 | adapter->stats.cexterr; |
| 3537 | adapter->net_stats.rx_length_errors = adapter->stats.ruc + |
| 3538 | adapter->stats.roc; |
| 3539 | adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs; |
| 3540 | adapter->net_stats.rx_frame_errors = adapter->stats.algnerrc; |
| 3541 | adapter->net_stats.rx_missed_errors = adapter->stats.mpc; |
| 3542 | |
| 3543 | /* Tx Errors */ |
| 3544 | adapter->net_stats.tx_errors = adapter->stats.ecol + |
| 3545 | adapter->stats.latecol; |
| 3546 | adapter->net_stats.tx_aborted_errors = adapter->stats.ecol; |
| 3547 | adapter->net_stats.tx_window_errors = adapter->stats.latecol; |
| 3548 | adapter->net_stats.tx_carrier_errors = adapter->stats.tncrs; |
| 3549 | |
| 3550 | /* Tx Dropped needs to be maintained elsewhere */ |
| 3551 | |
| 3552 | /* Phy Stats */ |
| 3553 | if (hw->phy.media_type == e1000_media_type_copper) { |
| 3554 | if ((adapter->link_speed == SPEED_1000) && |
Alexander Duyck | 73cd78f | 2009-02-12 18:16:59 +0000 | [diff] [blame] | 3555 | (!igb_read_phy_reg(hw, PHY_1000T_STATUS, &phy_tmp))) { |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3556 | phy_tmp &= PHY_IDLE_ERROR_COUNT_MASK; |
| 3557 | adapter->phy_stats.idle_errors += phy_tmp; |
| 3558 | } |
| 3559 | } |
| 3560 | |
| 3561 | /* Management Stats */ |
| 3562 | adapter->stats.mgptc += rd32(E1000_MGTPTC); |
| 3563 | adapter->stats.mgprc += rd32(E1000_MGTPRC); |
| 3564 | adapter->stats.mgpdc += rd32(E1000_MGTPDC); |
| 3565 | } |
| 3566 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3567 | static irqreturn_t igb_msix_other(int irq, void *data) |
| 3568 | { |
| 3569 | struct net_device *netdev = data; |
| 3570 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 3571 | struct e1000_hw *hw = &adapter->hw; |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 3572 | u32 icr = rd32(E1000_ICR); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3573 | |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 3574 | /* reading ICR causes bit 31 of EICR to be cleared */ |
Alexander Duyck | dda0e08 | 2009-02-06 23:19:08 +0000 | [diff] [blame] | 3575 | |
| 3576 | if(icr & E1000_ICR_DOUTSYNC) { |
| 3577 | /* HW is reporting DMA is out of sync */ |
| 3578 | adapter->stats.doosync++; |
| 3579 | } |
Alexander Duyck | eebbbdb | 2009-02-06 23:19:29 +0000 | [diff] [blame] | 3580 | |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 3581 | /* Check for a mailbox event */ |
| 3582 | if (icr & E1000_ICR_VMMB) |
| 3583 | igb_msg_task(adapter); |
| 3584 | |
| 3585 | if (icr & E1000_ICR_LSC) { |
| 3586 | hw->mac.get_link_status = 1; |
| 3587 | /* guard against interrupt when we're going down */ |
| 3588 | if (!test_bit(__IGB_DOWN, &adapter->state)) |
| 3589 | mod_timer(&adapter->watchdog_timer, jiffies + 1); |
| 3590 | } |
| 3591 | |
| 3592 | wr32(E1000_IMS, E1000_IMS_LSC | E1000_IMS_DOUTSYNC | E1000_IMS_VMMB); |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 3593 | wr32(E1000_EIMS, adapter->eims_other); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3594 | |
| 3595 | return IRQ_HANDLED; |
| 3596 | } |
| 3597 | |
| 3598 | static irqreturn_t igb_msix_tx(int irq, void *data) |
| 3599 | { |
| 3600 | struct igb_ring *tx_ring = data; |
| 3601 | struct igb_adapter *adapter = tx_ring->adapter; |
| 3602 | struct e1000_hw *hw = &adapter->hw; |
| 3603 | |
Jeff Kirsher | 421e02f | 2008-10-17 11:08:31 -0700 | [diff] [blame] | 3604 | #ifdef CONFIG_IGB_DCA |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 3605 | if (adapter->flags & IGB_FLAG_DCA_ENABLED) |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 3606 | igb_update_tx_dca(tx_ring); |
| 3607 | #endif |
Alexander Duyck | 73cd78f | 2009-02-12 18:16:59 +0000 | [diff] [blame] | 3608 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3609 | tx_ring->total_bytes = 0; |
| 3610 | tx_ring->total_packets = 0; |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 3611 | |
| 3612 | /* auto mask will automatically reenable the interrupt when we write |
| 3613 | * EICS */ |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 3614 | if (!igb_clean_tx_irq(tx_ring)) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3615 | /* Ring was not completely cleaned, so fire another interrupt */ |
| 3616 | wr32(E1000_EICS, tx_ring->eims_value); |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 3617 | else |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3618 | wr32(E1000_EIMS, tx_ring->eims_value); |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 3619 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3620 | return IRQ_HANDLED; |
| 3621 | } |
| 3622 | |
Alexander Duyck | 6eb5a7f | 2008-07-08 15:14:44 -0700 | [diff] [blame] | 3623 | static void igb_write_itr(struct igb_ring *ring) |
| 3624 | { |
| 3625 | struct e1000_hw *hw = &ring->adapter->hw; |
| 3626 | if ((ring->adapter->itr_setting & 3) && ring->set_itr) { |
| 3627 | switch (hw->mac.type) { |
| 3628 | case e1000_82576: |
Alexander Duyck | 73cd78f | 2009-02-12 18:16:59 +0000 | [diff] [blame] | 3629 | wr32(ring->itr_register, ring->itr_val | |
Alexander Duyck | 6eb5a7f | 2008-07-08 15:14:44 -0700 | [diff] [blame] | 3630 | 0x80000000); |
| 3631 | break; |
| 3632 | default: |
Alexander Duyck | 73cd78f | 2009-02-12 18:16:59 +0000 | [diff] [blame] | 3633 | wr32(ring->itr_register, ring->itr_val | |
Alexander Duyck | 6eb5a7f | 2008-07-08 15:14:44 -0700 | [diff] [blame] | 3634 | (ring->itr_val << 16)); |
| 3635 | break; |
| 3636 | } |
| 3637 | ring->set_itr = 0; |
| 3638 | } |
| 3639 | } |
| 3640 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3641 | static irqreturn_t igb_msix_rx(int irq, void *data) |
| 3642 | { |
| 3643 | struct igb_ring *rx_ring = data; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3644 | |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 3645 | /* Write the ITR value calculated at the end of the |
| 3646 | * previous interrupt. |
| 3647 | */ |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3648 | |
Alexander Duyck | 6eb5a7f | 2008-07-08 15:14:44 -0700 | [diff] [blame] | 3649 | igb_write_itr(rx_ring); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3650 | |
Ben Hutchings | 288379f | 2009-01-19 16:43:59 -0800 | [diff] [blame] | 3651 | if (napi_schedule_prep(&rx_ring->napi)) |
| 3652 | __napi_schedule(&rx_ring->napi); |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 3653 | |
Jeff Kirsher | 421e02f | 2008-10-17 11:08:31 -0700 | [diff] [blame] | 3654 | #ifdef CONFIG_IGB_DCA |
David S. Miller | 8d25332 | 2008-12-26 15:13:55 -0800 | [diff] [blame] | 3655 | if (rx_ring->adapter->flags & IGB_FLAG_DCA_ENABLED) |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 3656 | igb_update_rx_dca(rx_ring); |
| 3657 | #endif |
| 3658 | return IRQ_HANDLED; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3659 | } |
| 3660 | |
Jeff Kirsher | 421e02f | 2008-10-17 11:08:31 -0700 | [diff] [blame] | 3661 | #ifdef CONFIG_IGB_DCA |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 3662 | static void igb_update_rx_dca(struct igb_ring *rx_ring) |
| 3663 | { |
| 3664 | u32 dca_rxctrl; |
| 3665 | struct igb_adapter *adapter = rx_ring->adapter; |
| 3666 | struct e1000_hw *hw = &adapter->hw; |
| 3667 | int cpu = get_cpu(); |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 3668 | int q = rx_ring->reg_idx; |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 3669 | |
| 3670 | if (rx_ring->cpu != cpu) { |
| 3671 | dca_rxctrl = rd32(E1000_DCA_RXCTRL(q)); |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 3672 | if (hw->mac.type == e1000_82576) { |
| 3673 | dca_rxctrl &= ~E1000_DCA_RXCTRL_CPUID_MASK_82576; |
Maciej Sosnowski | 92be791 | 2009-03-13 20:40:21 +0000 | [diff] [blame] | 3674 | dca_rxctrl |= dca3_get_tag(&adapter->pdev->dev, cpu) << |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 3675 | E1000_DCA_RXCTRL_CPUID_SHIFT; |
| 3676 | } else { |
| 3677 | dca_rxctrl &= ~E1000_DCA_RXCTRL_CPUID_MASK; |
Maciej Sosnowski | 92be791 | 2009-03-13 20:40:21 +0000 | [diff] [blame] | 3678 | dca_rxctrl |= dca3_get_tag(&adapter->pdev->dev, cpu); |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 3679 | } |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 3680 | dca_rxctrl |= E1000_DCA_RXCTRL_DESC_DCA_EN; |
| 3681 | dca_rxctrl |= E1000_DCA_RXCTRL_HEAD_DCA_EN; |
| 3682 | dca_rxctrl |= E1000_DCA_RXCTRL_DATA_DCA_EN; |
| 3683 | wr32(E1000_DCA_RXCTRL(q), dca_rxctrl); |
| 3684 | rx_ring->cpu = cpu; |
| 3685 | } |
| 3686 | put_cpu(); |
| 3687 | } |
| 3688 | |
| 3689 | static void igb_update_tx_dca(struct igb_ring *tx_ring) |
| 3690 | { |
| 3691 | u32 dca_txctrl; |
| 3692 | struct igb_adapter *adapter = tx_ring->adapter; |
| 3693 | struct e1000_hw *hw = &adapter->hw; |
| 3694 | int cpu = get_cpu(); |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 3695 | int q = tx_ring->reg_idx; |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 3696 | |
| 3697 | if (tx_ring->cpu != cpu) { |
| 3698 | dca_txctrl = rd32(E1000_DCA_TXCTRL(q)); |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 3699 | if (hw->mac.type == e1000_82576) { |
| 3700 | dca_txctrl &= ~E1000_DCA_TXCTRL_CPUID_MASK_82576; |
Maciej Sosnowski | 92be791 | 2009-03-13 20:40:21 +0000 | [diff] [blame] | 3701 | dca_txctrl |= dca3_get_tag(&adapter->pdev->dev, cpu) << |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 3702 | E1000_DCA_TXCTRL_CPUID_SHIFT; |
| 3703 | } else { |
| 3704 | dca_txctrl &= ~E1000_DCA_TXCTRL_CPUID_MASK; |
Maciej Sosnowski | 92be791 | 2009-03-13 20:40:21 +0000 | [diff] [blame] | 3705 | dca_txctrl |= dca3_get_tag(&adapter->pdev->dev, cpu); |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 3706 | } |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 3707 | dca_txctrl |= E1000_DCA_TXCTRL_DESC_DCA_EN; |
| 3708 | wr32(E1000_DCA_TXCTRL(q), dca_txctrl); |
| 3709 | tx_ring->cpu = cpu; |
| 3710 | } |
| 3711 | put_cpu(); |
| 3712 | } |
| 3713 | |
| 3714 | static void igb_setup_dca(struct igb_adapter *adapter) |
| 3715 | { |
| 3716 | int i; |
| 3717 | |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 3718 | if (!(adapter->flags & IGB_FLAG_DCA_ENABLED)) |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 3719 | return; |
| 3720 | |
| 3721 | for (i = 0; i < adapter->num_tx_queues; i++) { |
| 3722 | adapter->tx_ring[i].cpu = -1; |
| 3723 | igb_update_tx_dca(&adapter->tx_ring[i]); |
| 3724 | } |
| 3725 | for (i = 0; i < adapter->num_rx_queues; i++) { |
| 3726 | adapter->rx_ring[i].cpu = -1; |
| 3727 | igb_update_rx_dca(&adapter->rx_ring[i]); |
| 3728 | } |
| 3729 | } |
| 3730 | |
| 3731 | static int __igb_notify_dca(struct device *dev, void *data) |
| 3732 | { |
| 3733 | struct net_device *netdev = dev_get_drvdata(dev); |
| 3734 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 3735 | struct e1000_hw *hw = &adapter->hw; |
| 3736 | unsigned long event = *(unsigned long *)data; |
| 3737 | |
| 3738 | switch (event) { |
| 3739 | case DCA_PROVIDER_ADD: |
| 3740 | /* if already enabled, don't do it again */ |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 3741 | if (adapter->flags & IGB_FLAG_DCA_ENABLED) |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 3742 | break; |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 3743 | /* Always use CB2 mode, difference is masked |
| 3744 | * in the CB driver. */ |
Alexander Duyck | cbd347a | 2009-02-15 23:59:44 -0800 | [diff] [blame] | 3745 | wr32(E1000_DCA_CTRL, E1000_DCA_CTRL_DCA_MODE_CB2); |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 3746 | if (dca_add_requester(dev) == 0) { |
Alexander Duyck | bbd98fe | 2009-01-31 00:52:30 -0800 | [diff] [blame] | 3747 | adapter->flags |= IGB_FLAG_DCA_ENABLED; |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 3748 | dev_info(&adapter->pdev->dev, "DCA enabled\n"); |
| 3749 | igb_setup_dca(adapter); |
| 3750 | break; |
| 3751 | } |
| 3752 | /* Fall Through since DCA is disabled. */ |
| 3753 | case DCA_PROVIDER_REMOVE: |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 3754 | if (adapter->flags & IGB_FLAG_DCA_ENABLED) { |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 3755 | /* without this a class_device is left |
| 3756 | * hanging around in the sysfs model */ |
| 3757 | dca_remove_requester(dev); |
| 3758 | dev_info(&adapter->pdev->dev, "DCA disabled\n"); |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 3759 | adapter->flags &= ~IGB_FLAG_DCA_ENABLED; |
Alexander Duyck | cbd347a | 2009-02-15 23:59:44 -0800 | [diff] [blame] | 3760 | wr32(E1000_DCA_CTRL, E1000_DCA_CTRL_DCA_MODE_DISABLE); |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 3761 | } |
| 3762 | break; |
| 3763 | } |
Alexander Duyck | bbd98fe | 2009-01-31 00:52:30 -0800 | [diff] [blame] | 3764 | |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 3765 | return 0; |
| 3766 | } |
| 3767 | |
| 3768 | static int igb_notify_dca(struct notifier_block *nb, unsigned long event, |
| 3769 | void *p) |
| 3770 | { |
| 3771 | int ret_val; |
| 3772 | |
| 3773 | ret_val = driver_for_each_device(&igb_driver.driver, NULL, &event, |
| 3774 | __igb_notify_dca); |
| 3775 | |
| 3776 | return ret_val ? NOTIFY_BAD : NOTIFY_DONE; |
| 3777 | } |
Jeff Kirsher | 421e02f | 2008-10-17 11:08:31 -0700 | [diff] [blame] | 3778 | #endif /* CONFIG_IGB_DCA */ |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3779 | |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 3780 | static void igb_ping_all_vfs(struct igb_adapter *adapter) |
| 3781 | { |
| 3782 | struct e1000_hw *hw = &adapter->hw; |
| 3783 | u32 ping; |
| 3784 | int i; |
| 3785 | |
| 3786 | for (i = 0 ; i < adapter->vfs_allocated_count; i++) { |
| 3787 | ping = E1000_PF_CONTROL_MSG; |
| 3788 | if (adapter->vf_data[i].clear_to_send) |
| 3789 | ping |= E1000_VT_MSGTYPE_CTS; |
| 3790 | igb_write_mbx(hw, &ping, 1, i); |
| 3791 | } |
| 3792 | } |
| 3793 | |
| 3794 | static int igb_set_vf_multicasts(struct igb_adapter *adapter, |
| 3795 | u32 *msgbuf, u32 vf) |
| 3796 | { |
| 3797 | int n = (msgbuf[0] & E1000_VT_MSGINFO_MASK) >> E1000_VT_MSGINFO_SHIFT; |
| 3798 | u16 *hash_list = (u16 *)&msgbuf[1]; |
| 3799 | struct vf_data_storage *vf_data = &adapter->vf_data[vf]; |
| 3800 | int i; |
| 3801 | |
| 3802 | /* only up to 30 hash values supported */ |
| 3803 | if (n > 30) |
| 3804 | n = 30; |
| 3805 | |
| 3806 | /* salt away the number of multi cast addresses assigned |
| 3807 | * to this VF for later use to restore when the PF multi cast |
| 3808 | * list changes |
| 3809 | */ |
| 3810 | vf_data->num_vf_mc_hashes = n; |
| 3811 | |
| 3812 | /* VFs are limited to using the MTA hash table for their multicast |
| 3813 | * addresses */ |
| 3814 | for (i = 0; i < n; i++) |
| 3815 | vf_data->vf_mc_hashes[i] = hash_list[i];; |
| 3816 | |
| 3817 | /* Flush and reset the mta with the new values */ |
| 3818 | igb_set_multi(adapter->netdev); |
| 3819 | |
| 3820 | return 0; |
| 3821 | } |
| 3822 | |
| 3823 | static void igb_restore_vf_multicasts(struct igb_adapter *adapter) |
| 3824 | { |
| 3825 | struct e1000_hw *hw = &adapter->hw; |
| 3826 | struct vf_data_storage *vf_data; |
| 3827 | int i, j; |
| 3828 | |
| 3829 | for (i = 0; i < adapter->vfs_allocated_count; i++) { |
| 3830 | vf_data = &adapter->vf_data[i]; |
| 3831 | for (j = 0; j < vf_data[i].num_vf_mc_hashes; j++) |
| 3832 | igb_mta_set(hw, vf_data->vf_mc_hashes[j]); |
| 3833 | } |
| 3834 | } |
| 3835 | |
| 3836 | static void igb_clear_vf_vfta(struct igb_adapter *adapter, u32 vf) |
| 3837 | { |
| 3838 | struct e1000_hw *hw = &adapter->hw; |
| 3839 | u32 pool_mask, reg, vid; |
| 3840 | int i; |
| 3841 | |
| 3842 | pool_mask = 1 << (E1000_VLVF_POOLSEL_SHIFT + vf); |
| 3843 | |
| 3844 | /* Find the vlan filter for this id */ |
| 3845 | for (i = 0; i < E1000_VLVF_ARRAY_SIZE; i++) { |
| 3846 | reg = rd32(E1000_VLVF(i)); |
| 3847 | |
| 3848 | /* remove the vf from the pool */ |
| 3849 | reg &= ~pool_mask; |
| 3850 | |
| 3851 | /* if pool is empty then remove entry from vfta */ |
| 3852 | if (!(reg & E1000_VLVF_POOLSEL_MASK) && |
| 3853 | (reg & E1000_VLVF_VLANID_ENABLE)) { |
| 3854 | reg = 0; |
| 3855 | vid = reg & E1000_VLVF_VLANID_MASK; |
| 3856 | igb_vfta_set(hw, vid, false); |
| 3857 | } |
| 3858 | |
| 3859 | wr32(E1000_VLVF(i), reg); |
| 3860 | } |
| 3861 | } |
| 3862 | |
| 3863 | static s32 igb_vlvf_set(struct igb_adapter *adapter, u32 vid, bool add, u32 vf) |
| 3864 | { |
| 3865 | struct e1000_hw *hw = &adapter->hw; |
| 3866 | u32 reg, i; |
| 3867 | |
| 3868 | /* It is an error to call this function when VFs are not enabled */ |
| 3869 | if (!adapter->vfs_allocated_count) |
| 3870 | return -1; |
| 3871 | |
| 3872 | /* Find the vlan filter for this id */ |
| 3873 | for (i = 0; i < E1000_VLVF_ARRAY_SIZE; i++) { |
| 3874 | reg = rd32(E1000_VLVF(i)); |
| 3875 | if ((reg & E1000_VLVF_VLANID_ENABLE) && |
| 3876 | vid == (reg & E1000_VLVF_VLANID_MASK)) |
| 3877 | break; |
| 3878 | } |
| 3879 | |
| 3880 | if (add) { |
| 3881 | if (i == E1000_VLVF_ARRAY_SIZE) { |
| 3882 | /* Did not find a matching VLAN ID entry that was |
| 3883 | * enabled. Search for a free filter entry, i.e. |
| 3884 | * one without the enable bit set |
| 3885 | */ |
| 3886 | for (i = 0; i < E1000_VLVF_ARRAY_SIZE; i++) { |
| 3887 | reg = rd32(E1000_VLVF(i)); |
| 3888 | if (!(reg & E1000_VLVF_VLANID_ENABLE)) |
| 3889 | break; |
| 3890 | } |
| 3891 | } |
| 3892 | if (i < E1000_VLVF_ARRAY_SIZE) { |
| 3893 | /* Found an enabled/available entry */ |
| 3894 | reg |= 1 << (E1000_VLVF_POOLSEL_SHIFT + vf); |
| 3895 | |
| 3896 | /* if !enabled we need to set this up in vfta */ |
| 3897 | if (!(reg & E1000_VLVF_VLANID_ENABLE)) { |
Alexander Duyck | cad6d05 | 2009-03-13 20:41:37 +0000 | [diff] [blame^] | 3898 | /* add VID to filter table, if bit already set |
| 3899 | * PF must have added it outside of table */ |
| 3900 | if (igb_vfta_set(hw, vid, true)) |
| 3901 | reg |= 1 << (E1000_VLVF_POOLSEL_SHIFT + |
| 3902 | adapter->vfs_allocated_count); |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 3903 | reg |= E1000_VLVF_VLANID_ENABLE; |
| 3904 | } |
Alexander Duyck | cad6d05 | 2009-03-13 20:41:37 +0000 | [diff] [blame^] | 3905 | reg &= ~E1000_VLVF_VLANID_MASK; |
| 3906 | reg |= vid; |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 3907 | |
| 3908 | wr32(E1000_VLVF(i), reg); |
| 3909 | return 0; |
| 3910 | } |
| 3911 | } else { |
| 3912 | if (i < E1000_VLVF_ARRAY_SIZE) { |
| 3913 | /* remove vf from the pool */ |
| 3914 | reg &= ~(1 << (E1000_VLVF_POOLSEL_SHIFT + vf)); |
| 3915 | /* if pool is empty then remove entry from vfta */ |
| 3916 | if (!(reg & E1000_VLVF_POOLSEL_MASK)) { |
| 3917 | reg = 0; |
| 3918 | igb_vfta_set(hw, vid, false); |
| 3919 | } |
| 3920 | wr32(E1000_VLVF(i), reg); |
| 3921 | return 0; |
| 3922 | } |
| 3923 | } |
| 3924 | return -1; |
| 3925 | } |
| 3926 | |
| 3927 | static int igb_set_vf_vlan(struct igb_adapter *adapter, u32 *msgbuf, u32 vf) |
| 3928 | { |
| 3929 | int add = (msgbuf[0] & E1000_VT_MSGINFO_MASK) >> E1000_VT_MSGINFO_SHIFT; |
| 3930 | int vid = (msgbuf[1] & E1000_VLVF_VLANID_MASK); |
| 3931 | |
| 3932 | return igb_vlvf_set(adapter, vid, add, vf); |
| 3933 | } |
| 3934 | |
| 3935 | static inline void igb_vf_reset_event(struct igb_adapter *adapter, u32 vf) |
| 3936 | { |
| 3937 | struct e1000_hw *hw = &adapter->hw; |
| 3938 | |
| 3939 | /* disable mailbox functionality for vf */ |
| 3940 | adapter->vf_data[vf].clear_to_send = false; |
| 3941 | |
| 3942 | /* reset offloads to defaults */ |
| 3943 | igb_set_vmolr(hw, vf); |
| 3944 | |
| 3945 | /* reset vlans for device */ |
| 3946 | igb_clear_vf_vfta(adapter, vf); |
| 3947 | |
| 3948 | /* reset multicast table array for vf */ |
| 3949 | adapter->vf_data[vf].num_vf_mc_hashes = 0; |
| 3950 | |
| 3951 | /* Flush and reset the mta with the new values */ |
| 3952 | igb_set_multi(adapter->netdev); |
| 3953 | } |
| 3954 | |
| 3955 | static inline void igb_vf_reset_msg(struct igb_adapter *adapter, u32 vf) |
| 3956 | { |
| 3957 | struct e1000_hw *hw = &adapter->hw; |
| 3958 | unsigned char *vf_mac = adapter->vf_data[vf].vf_mac_addresses; |
| 3959 | u32 reg, msgbuf[3]; |
| 3960 | u8 *addr = (u8 *)(&msgbuf[1]); |
| 3961 | |
| 3962 | /* process all the same items cleared in a function level reset */ |
| 3963 | igb_vf_reset_event(adapter, vf); |
| 3964 | |
| 3965 | /* set vf mac address */ |
| 3966 | igb_rar_set(hw, vf_mac, vf + 1); |
| 3967 | igb_set_rah_pool(hw, vf, vf + 1); |
| 3968 | |
| 3969 | /* enable transmit and receive for vf */ |
| 3970 | reg = rd32(E1000_VFTE); |
| 3971 | wr32(E1000_VFTE, reg | (1 << vf)); |
| 3972 | reg = rd32(E1000_VFRE); |
| 3973 | wr32(E1000_VFRE, reg | (1 << vf)); |
| 3974 | |
| 3975 | /* enable mailbox functionality for vf */ |
| 3976 | adapter->vf_data[vf].clear_to_send = true; |
| 3977 | |
| 3978 | /* reply to reset with ack and vf mac address */ |
| 3979 | msgbuf[0] = E1000_VF_RESET | E1000_VT_MSGTYPE_ACK; |
| 3980 | memcpy(addr, vf_mac, 6); |
| 3981 | igb_write_mbx(hw, msgbuf, 3, vf); |
| 3982 | } |
| 3983 | |
| 3984 | static int igb_set_vf_mac_addr(struct igb_adapter *adapter, u32 *msg, int vf) |
| 3985 | { |
| 3986 | unsigned char *addr = (char *)&msg[1]; |
| 3987 | int err = -1; |
| 3988 | |
| 3989 | if (is_valid_ether_addr(addr)) |
| 3990 | err = igb_set_vf_mac(adapter, vf, addr); |
| 3991 | |
| 3992 | return err; |
| 3993 | |
| 3994 | } |
| 3995 | |
| 3996 | static void igb_rcv_ack_from_vf(struct igb_adapter *adapter, u32 vf) |
| 3997 | { |
| 3998 | struct e1000_hw *hw = &adapter->hw; |
| 3999 | u32 msg = E1000_VT_MSGTYPE_NACK; |
| 4000 | |
| 4001 | /* if device isn't clear to send it shouldn't be reading either */ |
| 4002 | if (!adapter->vf_data[vf].clear_to_send) |
| 4003 | igb_write_mbx(hw, &msg, 1, vf); |
| 4004 | } |
| 4005 | |
| 4006 | |
| 4007 | static void igb_msg_task(struct igb_adapter *adapter) |
| 4008 | { |
| 4009 | struct e1000_hw *hw = &adapter->hw; |
| 4010 | u32 vf; |
| 4011 | |
| 4012 | for (vf = 0; vf < adapter->vfs_allocated_count; vf++) { |
| 4013 | /* process any reset requests */ |
| 4014 | if (!igb_check_for_rst(hw, vf)) { |
| 4015 | adapter->vf_data[vf].clear_to_send = false; |
| 4016 | igb_vf_reset_event(adapter, vf); |
| 4017 | } |
| 4018 | |
| 4019 | /* process any messages pending */ |
| 4020 | if (!igb_check_for_msg(hw, vf)) |
| 4021 | igb_rcv_msg_from_vf(adapter, vf); |
| 4022 | |
| 4023 | /* process any acks */ |
| 4024 | if (!igb_check_for_ack(hw, vf)) |
| 4025 | igb_rcv_ack_from_vf(adapter, vf); |
| 4026 | |
| 4027 | } |
| 4028 | } |
| 4029 | |
| 4030 | static int igb_rcv_msg_from_vf(struct igb_adapter *adapter, u32 vf) |
| 4031 | { |
| 4032 | u32 mbx_size = E1000_VFMAILBOX_SIZE; |
| 4033 | u32 msgbuf[mbx_size]; |
| 4034 | struct e1000_hw *hw = &adapter->hw; |
| 4035 | s32 retval; |
| 4036 | |
| 4037 | retval = igb_read_mbx(hw, msgbuf, mbx_size, vf); |
| 4038 | |
| 4039 | if (retval) |
| 4040 | dev_err(&adapter->pdev->dev, |
| 4041 | "Error receiving message from VF\n"); |
| 4042 | |
| 4043 | /* this is a message we already processed, do nothing */ |
| 4044 | if (msgbuf[0] & (E1000_VT_MSGTYPE_ACK | E1000_VT_MSGTYPE_NACK)) |
| 4045 | return retval; |
| 4046 | |
| 4047 | /* |
| 4048 | * until the vf completes a reset it should not be |
| 4049 | * allowed to start any configuration. |
| 4050 | */ |
| 4051 | |
| 4052 | if (msgbuf[0] == E1000_VF_RESET) { |
| 4053 | igb_vf_reset_msg(adapter, vf); |
| 4054 | |
| 4055 | return retval; |
| 4056 | } |
| 4057 | |
| 4058 | if (!adapter->vf_data[vf].clear_to_send) { |
| 4059 | msgbuf[0] |= E1000_VT_MSGTYPE_NACK; |
| 4060 | igb_write_mbx(hw, msgbuf, 1, vf); |
| 4061 | return retval; |
| 4062 | } |
| 4063 | |
| 4064 | switch ((msgbuf[0] & 0xFFFF)) { |
| 4065 | case E1000_VF_SET_MAC_ADDR: |
| 4066 | retval = igb_set_vf_mac_addr(adapter, msgbuf, vf); |
| 4067 | break; |
| 4068 | case E1000_VF_SET_MULTICAST: |
| 4069 | retval = igb_set_vf_multicasts(adapter, msgbuf, vf); |
| 4070 | break; |
| 4071 | case E1000_VF_SET_LPE: |
| 4072 | retval = igb_set_vf_rlpml(adapter, msgbuf[1], vf); |
| 4073 | break; |
| 4074 | case E1000_VF_SET_VLAN: |
| 4075 | retval = igb_set_vf_vlan(adapter, msgbuf, vf); |
| 4076 | break; |
| 4077 | default: |
| 4078 | dev_err(&adapter->pdev->dev, "Unhandled Msg %08x\n", msgbuf[0]); |
| 4079 | retval = -1; |
| 4080 | break; |
| 4081 | } |
| 4082 | |
| 4083 | /* notify the VF of the results of what it sent us */ |
| 4084 | if (retval) |
| 4085 | msgbuf[0] |= E1000_VT_MSGTYPE_NACK; |
| 4086 | else |
| 4087 | msgbuf[0] |= E1000_VT_MSGTYPE_ACK; |
| 4088 | |
| 4089 | msgbuf[0] |= E1000_VT_MSGTYPE_CTS; |
| 4090 | |
| 4091 | igb_write_mbx(hw, msgbuf, 1, vf); |
| 4092 | |
| 4093 | return retval; |
| 4094 | } |
| 4095 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4096 | /** |
| 4097 | * igb_intr_msi - Interrupt Handler |
| 4098 | * @irq: interrupt number |
| 4099 | * @data: pointer to a network interface device structure |
| 4100 | **/ |
| 4101 | static irqreturn_t igb_intr_msi(int irq, void *data) |
| 4102 | { |
| 4103 | struct net_device *netdev = data; |
| 4104 | struct igb_adapter *adapter = netdev_priv(netdev); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4105 | struct e1000_hw *hw = &adapter->hw; |
| 4106 | /* read ICR disables interrupts using IAM */ |
| 4107 | u32 icr = rd32(E1000_ICR); |
| 4108 | |
Alexander Duyck | 6eb5a7f | 2008-07-08 15:14:44 -0700 | [diff] [blame] | 4109 | igb_write_itr(adapter->rx_ring); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4110 | |
Alexander Duyck | dda0e08 | 2009-02-06 23:19:08 +0000 | [diff] [blame] | 4111 | if(icr & E1000_ICR_DOUTSYNC) { |
| 4112 | /* HW is reporting DMA is out of sync */ |
| 4113 | adapter->stats.doosync++; |
| 4114 | } |
| 4115 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4116 | if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) { |
| 4117 | hw->mac.get_link_status = 1; |
| 4118 | if (!test_bit(__IGB_DOWN, &adapter->state)) |
| 4119 | mod_timer(&adapter->watchdog_timer, jiffies + 1); |
| 4120 | } |
| 4121 | |
Ben Hutchings | 288379f | 2009-01-19 16:43:59 -0800 | [diff] [blame] | 4122 | napi_schedule(&adapter->rx_ring[0].napi); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4123 | |
| 4124 | return IRQ_HANDLED; |
| 4125 | } |
| 4126 | |
| 4127 | /** |
Alexander Duyck | 4a3c643 | 2009-02-06 23:20:49 +0000 | [diff] [blame] | 4128 | * igb_intr - Legacy Interrupt Handler |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4129 | * @irq: interrupt number |
| 4130 | * @data: pointer to a network interface device structure |
| 4131 | **/ |
| 4132 | static irqreturn_t igb_intr(int irq, void *data) |
| 4133 | { |
| 4134 | struct net_device *netdev = data; |
| 4135 | struct igb_adapter *adapter = netdev_priv(netdev); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4136 | struct e1000_hw *hw = &adapter->hw; |
| 4137 | /* Interrupt Auto-Mask...upon reading ICR, interrupts are masked. No |
| 4138 | * need for the IMC write */ |
| 4139 | u32 icr = rd32(E1000_ICR); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4140 | if (!icr) |
| 4141 | return IRQ_NONE; /* Not our interrupt */ |
| 4142 | |
Alexander Duyck | 6eb5a7f | 2008-07-08 15:14:44 -0700 | [diff] [blame] | 4143 | igb_write_itr(adapter->rx_ring); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4144 | |
| 4145 | /* IMS will not auto-mask if INT_ASSERTED is not set, and if it is |
| 4146 | * not set, then the adapter didn't send an interrupt */ |
| 4147 | if (!(icr & E1000_ICR_INT_ASSERTED)) |
| 4148 | return IRQ_NONE; |
| 4149 | |
Alexander Duyck | dda0e08 | 2009-02-06 23:19:08 +0000 | [diff] [blame] | 4150 | if(icr & E1000_ICR_DOUTSYNC) { |
| 4151 | /* HW is reporting DMA is out of sync */ |
| 4152 | adapter->stats.doosync++; |
| 4153 | } |
| 4154 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4155 | if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) { |
| 4156 | hw->mac.get_link_status = 1; |
| 4157 | /* guard against interrupt when we're going down */ |
| 4158 | if (!test_bit(__IGB_DOWN, &adapter->state)) |
| 4159 | mod_timer(&adapter->watchdog_timer, jiffies + 1); |
| 4160 | } |
| 4161 | |
Ben Hutchings | 288379f | 2009-01-19 16:43:59 -0800 | [diff] [blame] | 4162 | napi_schedule(&adapter->rx_ring[0].napi); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4163 | |
| 4164 | return IRQ_HANDLED; |
| 4165 | } |
| 4166 | |
Alexander Duyck | 4654425 | 2009-02-19 20:39:04 -0800 | [diff] [blame] | 4167 | static inline void igb_rx_irq_enable(struct igb_ring *rx_ring) |
| 4168 | { |
| 4169 | struct igb_adapter *adapter = rx_ring->adapter; |
| 4170 | struct e1000_hw *hw = &adapter->hw; |
| 4171 | |
| 4172 | if (adapter->itr_setting & 3) { |
| 4173 | if (adapter->num_rx_queues == 1) |
| 4174 | igb_set_itr(adapter); |
| 4175 | else |
| 4176 | igb_update_ring_itr(rx_ring); |
| 4177 | } |
| 4178 | |
| 4179 | if (!test_bit(__IGB_DOWN, &adapter->state)) { |
| 4180 | if (adapter->msix_entries) |
| 4181 | wr32(E1000_EIMS, rx_ring->eims_value); |
| 4182 | else |
| 4183 | igb_irq_enable(adapter); |
| 4184 | } |
| 4185 | } |
| 4186 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4187 | /** |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 4188 | * igb_poll - NAPI Rx polling callback |
| 4189 | * @napi: napi polling structure |
| 4190 | * @budget: count of how many packets we should handle |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4191 | **/ |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 4192 | static int igb_poll(struct napi_struct *napi, int budget) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4193 | { |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 4194 | struct igb_ring *rx_ring = container_of(napi, struct igb_ring, napi); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4195 | int work_done = 0; |
| 4196 | |
Jeff Kirsher | 421e02f | 2008-10-17 11:08:31 -0700 | [diff] [blame] | 4197 | #ifdef CONFIG_IGB_DCA |
Alexander Duyck | bd38e5d | 2009-03-13 20:40:58 +0000 | [diff] [blame] | 4198 | if (rx_ring->adapter->flags & IGB_FLAG_DCA_ENABLED) |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 4199 | igb_update_rx_dca(rx_ring); |
| 4200 | #endif |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 4201 | igb_clean_rx_irq_adv(rx_ring, &work_done, budget); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4202 | |
Alexander Duyck | 4654425 | 2009-02-19 20:39:04 -0800 | [diff] [blame] | 4203 | if (rx_ring->buddy) { |
| 4204 | #ifdef CONFIG_IGB_DCA |
Alexander Duyck | bd38e5d | 2009-03-13 20:40:58 +0000 | [diff] [blame] | 4205 | if (rx_ring->adapter->flags & IGB_FLAG_DCA_ENABLED) |
Alexander Duyck | 4654425 | 2009-02-19 20:39:04 -0800 | [diff] [blame] | 4206 | igb_update_tx_dca(rx_ring->buddy); |
| 4207 | #endif |
| 4208 | if (!igb_clean_tx_irq(rx_ring->buddy)) |
| 4209 | work_done = budget; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4210 | } |
| 4211 | |
Alexander Duyck | 4654425 | 2009-02-19 20:39:04 -0800 | [diff] [blame] | 4212 | /* If not enough Rx work done, exit the polling mode */ |
Alexander Duyck | 5e6d5b1 | 2009-03-13 20:40:38 +0000 | [diff] [blame] | 4213 | if (work_done < budget) { |
Alexander Duyck | 4654425 | 2009-02-19 20:39:04 -0800 | [diff] [blame] | 4214 | napi_complete(napi); |
| 4215 | igb_rx_irq_enable(rx_ring); |
| 4216 | } |
| 4217 | |
| 4218 | return work_done; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4219 | } |
Al Viro | 6d8126f | 2008-03-16 22:23:24 +0000 | [diff] [blame] | 4220 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4221 | /** |
Patrick Ohly | 33af6bc | 2009-02-12 05:03:43 +0000 | [diff] [blame] | 4222 | * igb_hwtstamp - utility function which checks for TX time stamp |
| 4223 | * @adapter: board private structure |
| 4224 | * @skb: packet that was just sent |
| 4225 | * |
| 4226 | * If we were asked to do hardware stamping and such a time stamp is |
| 4227 | * available, then it must have been for this skb here because we only |
| 4228 | * allow only one such packet into the queue. |
| 4229 | */ |
| 4230 | static void igb_tx_hwtstamp(struct igb_adapter *adapter, struct sk_buff *skb) |
| 4231 | { |
| 4232 | union skb_shared_tx *shtx = skb_tx(skb); |
| 4233 | struct e1000_hw *hw = &adapter->hw; |
| 4234 | |
| 4235 | if (unlikely(shtx->hardware)) { |
| 4236 | u32 valid = rd32(E1000_TSYNCTXCTL) & E1000_TSYNCTXCTL_VALID; |
| 4237 | if (valid) { |
| 4238 | u64 regval = rd32(E1000_TXSTMPL); |
| 4239 | u64 ns; |
| 4240 | struct skb_shared_hwtstamps shhwtstamps; |
| 4241 | |
| 4242 | memset(&shhwtstamps, 0, sizeof(shhwtstamps)); |
| 4243 | regval |= (u64)rd32(E1000_TXSTMPH) << 32; |
| 4244 | ns = timecounter_cyc2time(&adapter->clock, |
| 4245 | regval); |
| 4246 | timecompare_update(&adapter->compare, ns); |
| 4247 | shhwtstamps.hwtstamp = ns_to_ktime(ns); |
| 4248 | shhwtstamps.syststamp = |
| 4249 | timecompare_transform(&adapter->compare, ns); |
| 4250 | skb_tstamp_tx(skb, &shhwtstamps); |
| 4251 | } |
Patrick Ohly | 33af6bc | 2009-02-12 05:03:43 +0000 | [diff] [blame] | 4252 | } |
| 4253 | } |
| 4254 | |
| 4255 | /** |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4256 | * igb_clean_tx_irq - Reclaim resources after transmit completes |
| 4257 | * @adapter: board private structure |
| 4258 | * returns true if ring is completely cleaned |
| 4259 | **/ |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 4260 | static bool igb_clean_tx_irq(struct igb_ring *tx_ring) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4261 | { |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 4262 | struct igb_adapter *adapter = tx_ring->adapter; |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 4263 | struct net_device *netdev = adapter->netdev; |
Alexander Duyck | 0e014cb | 2008-12-26 01:33:18 -0800 | [diff] [blame] | 4264 | struct e1000_hw *hw = &adapter->hw; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4265 | struct igb_buffer *buffer_info; |
| 4266 | struct sk_buff *skb; |
Alexander Duyck | 0e014cb | 2008-12-26 01:33:18 -0800 | [diff] [blame] | 4267 | union e1000_adv_tx_desc *tx_desc, *eop_desc; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4268 | unsigned int total_bytes = 0, total_packets = 0; |
Alexander Duyck | 0e014cb | 2008-12-26 01:33:18 -0800 | [diff] [blame] | 4269 | unsigned int i, eop, count = 0; |
| 4270 | bool cleaned = false; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4271 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4272 | i = tx_ring->next_to_clean; |
Alexander Duyck | 0e014cb | 2008-12-26 01:33:18 -0800 | [diff] [blame] | 4273 | eop = tx_ring->buffer_info[i].next_to_watch; |
| 4274 | eop_desc = E1000_TX_DESC_ADV(*tx_ring, eop); |
| 4275 | |
| 4276 | while ((eop_desc->wb.status & cpu_to_le32(E1000_TXD_STAT_DD)) && |
| 4277 | (count < tx_ring->count)) { |
| 4278 | for (cleaned = false; !cleaned; count++) { |
| 4279 | tx_desc = E1000_TX_DESC_ADV(*tx_ring, i); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4280 | buffer_info = &tx_ring->buffer_info[i]; |
Alexander Duyck | 0e014cb | 2008-12-26 01:33:18 -0800 | [diff] [blame] | 4281 | cleaned = (i == eop); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4282 | skb = buffer_info->skb; |
| 4283 | |
| 4284 | if (skb) { |
| 4285 | unsigned int segs, bytecount; |
| 4286 | /* gso_segs is currently only valid for tcp */ |
| 4287 | segs = skb_shinfo(skb)->gso_segs ?: 1; |
| 4288 | /* multiply data chunks by size of headers */ |
| 4289 | bytecount = ((segs - 1) * skb_headlen(skb)) + |
| 4290 | skb->len; |
| 4291 | total_packets += segs; |
| 4292 | total_bytes += bytecount; |
Patrick Ohly | 33af6bc | 2009-02-12 05:03:43 +0000 | [diff] [blame] | 4293 | |
| 4294 | igb_tx_hwtstamp(adapter, skb); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4295 | } |
| 4296 | |
| 4297 | igb_unmap_and_free_tx_resource(adapter, buffer_info); |
Alexander Duyck | 0e014cb | 2008-12-26 01:33:18 -0800 | [diff] [blame] | 4298 | tx_desc->wb.status = 0; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4299 | |
| 4300 | i++; |
| 4301 | if (i == tx_ring->count) |
| 4302 | i = 0; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4303 | } |
Alexander Duyck | 0e014cb | 2008-12-26 01:33:18 -0800 | [diff] [blame] | 4304 | eop = tx_ring->buffer_info[i].next_to_watch; |
| 4305 | eop_desc = E1000_TX_DESC_ADV(*tx_ring, eop); |
| 4306 | } |
| 4307 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4308 | tx_ring->next_to_clean = i; |
| 4309 | |
Alexander Duyck | fc7d345 | 2008-08-26 04:25:08 -0700 | [diff] [blame] | 4310 | if (unlikely(count && |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4311 | netif_carrier_ok(netdev) && |
| 4312 | IGB_DESC_UNUSED(tx_ring) >= IGB_TX_QUEUE_WAKE)) { |
| 4313 | /* Make sure that anybody stopping the queue after this |
| 4314 | * sees the new next_to_clean. |
| 4315 | */ |
| 4316 | smp_mb(); |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 4317 | if (__netif_subqueue_stopped(netdev, tx_ring->queue_index) && |
| 4318 | !(test_bit(__IGB_DOWN, &adapter->state))) { |
| 4319 | netif_wake_subqueue(netdev, tx_ring->queue_index); |
| 4320 | ++adapter->restart_queue; |
| 4321 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4322 | } |
| 4323 | |
| 4324 | if (tx_ring->detect_tx_hung) { |
| 4325 | /* Detect a transmit hang in hardware, this serializes the |
| 4326 | * check with the clearing of time_stamp and movement of i */ |
| 4327 | tx_ring->detect_tx_hung = false; |
| 4328 | if (tx_ring->buffer_info[i].time_stamp && |
| 4329 | time_after(jiffies, tx_ring->buffer_info[i].time_stamp + |
| 4330 | (adapter->tx_timeout_factor * HZ)) |
| 4331 | && !(rd32(E1000_STATUS) & |
| 4332 | E1000_STATUS_TXOFF)) { |
| 4333 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4334 | /* detected Tx unit hang */ |
| 4335 | dev_err(&adapter->pdev->dev, |
| 4336 | "Detected Tx Unit Hang\n" |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 4337 | " Tx Queue <%d>\n" |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4338 | " TDH <%x>\n" |
| 4339 | " TDT <%x>\n" |
| 4340 | " next_to_use <%x>\n" |
| 4341 | " next_to_clean <%x>\n" |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4342 | "buffer_info[next_to_clean]\n" |
| 4343 | " time_stamp <%lx>\n" |
Alexander Duyck | 0e014cb | 2008-12-26 01:33:18 -0800 | [diff] [blame] | 4344 | " next_to_watch <%x>\n" |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4345 | " jiffies <%lx>\n" |
| 4346 | " desc.status <%x>\n", |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 4347 | tx_ring->queue_index, |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4348 | readl(adapter->hw.hw_addr + tx_ring->head), |
| 4349 | readl(adapter->hw.hw_addr + tx_ring->tail), |
| 4350 | tx_ring->next_to_use, |
| 4351 | tx_ring->next_to_clean, |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4352 | tx_ring->buffer_info[i].time_stamp, |
Alexander Duyck | 0e014cb | 2008-12-26 01:33:18 -0800 | [diff] [blame] | 4353 | eop, |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4354 | jiffies, |
Alexander Duyck | 0e014cb | 2008-12-26 01:33:18 -0800 | [diff] [blame] | 4355 | eop_desc->wb.status); |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 4356 | netif_stop_subqueue(netdev, tx_ring->queue_index); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4357 | } |
| 4358 | } |
| 4359 | tx_ring->total_bytes += total_bytes; |
| 4360 | tx_ring->total_packets += total_packets; |
Alexander Duyck | e21ed35 | 2008-07-08 15:07:24 -0700 | [diff] [blame] | 4361 | tx_ring->tx_stats.bytes += total_bytes; |
| 4362 | tx_ring->tx_stats.packets += total_packets; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4363 | adapter->net_stats.tx_bytes += total_bytes; |
| 4364 | adapter->net_stats.tx_packets += total_packets; |
Alexander Duyck | 0e014cb | 2008-12-26 01:33:18 -0800 | [diff] [blame] | 4365 | return (count < tx_ring->count); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4366 | } |
| 4367 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4368 | /** |
| 4369 | * igb_receive_skb - helper function to handle rx indications |
Alexander Duyck | eebbbdb | 2009-02-06 23:19:29 +0000 | [diff] [blame] | 4370 | * @ring: pointer to receive ring receving this packet |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4371 | * @status: descriptor status field as written by hardware |
Alexander Duyck | 73cd78f | 2009-02-12 18:16:59 +0000 | [diff] [blame] | 4372 | * @rx_desc: receive descriptor containing vlan and type information. |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4373 | * @skb: pointer to sk_buff to be indicated to stack |
| 4374 | **/ |
Alexander Duyck | d335252 | 2008-07-08 15:12:13 -0700 | [diff] [blame] | 4375 | static void igb_receive_skb(struct igb_ring *ring, u8 status, |
| 4376 | union e1000_adv_rx_desc * rx_desc, |
| 4377 | struct sk_buff *skb) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4378 | { |
Alexander Duyck | d335252 | 2008-07-08 15:12:13 -0700 | [diff] [blame] | 4379 | struct igb_adapter * adapter = ring->adapter; |
| 4380 | bool vlan_extracted = (adapter->vlgrp && (status & E1000_RXD_STAT_VP)); |
| 4381 | |
David S. Miller | 0c8dfc8 | 2009-01-27 16:22:32 -0800 | [diff] [blame] | 4382 | skb_record_rx_queue(skb, ring->queue_index); |
Herbert Xu | 5c0999b | 2009-01-19 15:20:57 -0800 | [diff] [blame] | 4383 | if (skb->ip_summed == CHECKSUM_UNNECESSARY) { |
Alexander Duyck | d335252 | 2008-07-08 15:12:13 -0700 | [diff] [blame] | 4384 | if (vlan_extracted) |
Herbert Xu | 5c0999b | 2009-01-19 15:20:57 -0800 | [diff] [blame] | 4385 | vlan_gro_receive(&ring->napi, adapter->vlgrp, |
| 4386 | le16_to_cpu(rx_desc->wb.upper.vlan), |
| 4387 | skb); |
Alexander Duyck | d335252 | 2008-07-08 15:12:13 -0700 | [diff] [blame] | 4388 | else |
Herbert Xu | 5c0999b | 2009-01-19 15:20:57 -0800 | [diff] [blame] | 4389 | napi_gro_receive(&ring->napi, skb); |
Alexander Duyck | d335252 | 2008-07-08 15:12:13 -0700 | [diff] [blame] | 4390 | } else { |
Alexander Duyck | d335252 | 2008-07-08 15:12:13 -0700 | [diff] [blame] | 4391 | if (vlan_extracted) |
| 4392 | vlan_hwaccel_receive_skb(skb, adapter->vlgrp, |
| 4393 | le16_to_cpu(rx_desc->wb.upper.vlan)); |
| 4394 | else |
Alexander Duyck | d335252 | 2008-07-08 15:12:13 -0700 | [diff] [blame] | 4395 | netif_receive_skb(skb); |
Alexander Duyck | d335252 | 2008-07-08 15:12:13 -0700 | [diff] [blame] | 4396 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4397 | } |
| 4398 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4399 | static inline void igb_rx_checksum_adv(struct igb_adapter *adapter, |
| 4400 | u32 status_err, struct sk_buff *skb) |
| 4401 | { |
| 4402 | skb->ip_summed = CHECKSUM_NONE; |
| 4403 | |
| 4404 | /* Ignore Checksum bit is set or checksum is disabled through ethtool */ |
| 4405 | if ((status_err & E1000_RXD_STAT_IXSM) || !adapter->rx_csum) |
| 4406 | return; |
| 4407 | /* TCP/UDP checksum error bit is set */ |
| 4408 | if (status_err & |
| 4409 | (E1000_RXDEXT_STATERR_TCPE | E1000_RXDEXT_STATERR_IPE)) { |
| 4410 | /* let the stack verify checksum errors */ |
| 4411 | adapter->hw_csum_err++; |
| 4412 | return; |
| 4413 | } |
| 4414 | /* It must be a TCP or UDP packet with a valid checksum */ |
| 4415 | if (status_err & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS)) |
| 4416 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
| 4417 | |
| 4418 | adapter->hw_csum_good++; |
| 4419 | } |
| 4420 | |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 4421 | static bool igb_clean_rx_irq_adv(struct igb_ring *rx_ring, |
| 4422 | int *work_done, int budget) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4423 | { |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 4424 | struct igb_adapter *adapter = rx_ring->adapter; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4425 | struct net_device *netdev = adapter->netdev; |
Patrick Ohly | 33af6bc | 2009-02-12 05:03:43 +0000 | [diff] [blame] | 4426 | struct e1000_hw *hw = &adapter->hw; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4427 | struct pci_dev *pdev = adapter->pdev; |
| 4428 | union e1000_adv_rx_desc *rx_desc , *next_rxd; |
| 4429 | struct igb_buffer *buffer_info , *next_buffer; |
| 4430 | struct sk_buff *skb; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4431 | bool cleaned = false; |
| 4432 | int cleaned_count = 0; |
| 4433 | unsigned int total_bytes = 0, total_packets = 0; |
Alexander Duyck | 73cd78f | 2009-02-12 18:16:59 +0000 | [diff] [blame] | 4434 | unsigned int i; |
| 4435 | u32 length, hlen, staterr; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4436 | |
| 4437 | i = rx_ring->next_to_clean; |
Alexander Duyck | 69d3ca5 | 2009-02-06 23:15:04 +0000 | [diff] [blame] | 4438 | buffer_info = &rx_ring->buffer_info[i]; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4439 | rx_desc = E1000_RX_DESC_ADV(*rx_ring, i); |
| 4440 | staterr = le32_to_cpu(rx_desc->wb.upper.status_error); |
| 4441 | |
| 4442 | while (staterr & E1000_RXD_STAT_DD) { |
| 4443 | if (*work_done >= budget) |
| 4444 | break; |
| 4445 | (*work_done)++; |
Alexander Duyck | 69d3ca5 | 2009-02-06 23:15:04 +0000 | [diff] [blame] | 4446 | |
| 4447 | skb = buffer_info->skb; |
| 4448 | prefetch(skb->data - NET_IP_ALIGN); |
| 4449 | buffer_info->skb = NULL; |
| 4450 | |
| 4451 | i++; |
| 4452 | if (i == rx_ring->count) |
| 4453 | i = 0; |
| 4454 | next_rxd = E1000_RX_DESC_ADV(*rx_ring, i); |
| 4455 | prefetch(next_rxd); |
| 4456 | next_buffer = &rx_ring->buffer_info[i]; |
| 4457 | |
| 4458 | length = le16_to_cpu(rx_desc->wb.upper.length); |
| 4459 | cleaned = true; |
| 4460 | cleaned_count++; |
| 4461 | |
| 4462 | if (!adapter->rx_ps_hdr_size) { |
| 4463 | pci_unmap_single(pdev, buffer_info->dma, |
| 4464 | adapter->rx_buffer_len + |
| 4465 | NET_IP_ALIGN, |
| 4466 | PCI_DMA_FROMDEVICE); |
| 4467 | skb_put(skb, length); |
| 4468 | goto send_up; |
| 4469 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4470 | |
| 4471 | /* HW will not DMA in data larger than the given buffer, even |
| 4472 | * if it parses the (NFS, of course) header to be larger. In |
| 4473 | * that case, it fills the header buffer and spills the rest |
| 4474 | * into the page. |
| 4475 | */ |
Al Viro | 7deb07b | 2008-03-16 22:43:06 +0000 | [diff] [blame] | 4476 | hlen = (le16_to_cpu(rx_desc->wb.lower.lo_dword.hdr_info) & |
| 4477 | E1000_RXDADV_HDRBUFLEN_MASK) >> E1000_RXDADV_HDRBUFLEN_SHIFT; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4478 | if (hlen > adapter->rx_ps_hdr_size) |
| 4479 | hlen = adapter->rx_ps_hdr_size; |
| 4480 | |
Alexander Duyck | bf36c1a | 2008-07-08 15:11:40 -0700 | [diff] [blame] | 4481 | if (!skb_shinfo(skb)->nr_frags) { |
| 4482 | pci_unmap_single(pdev, buffer_info->dma, |
Alexander Duyck | 73cd78f | 2009-02-12 18:16:59 +0000 | [diff] [blame] | 4483 | adapter->rx_ps_hdr_size + NET_IP_ALIGN, |
Alexander Duyck | bf36c1a | 2008-07-08 15:11:40 -0700 | [diff] [blame] | 4484 | PCI_DMA_FROMDEVICE); |
| 4485 | skb_put(skb, hlen); |
| 4486 | } |
| 4487 | |
| 4488 | if (length) { |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4489 | pci_unmap_page(pdev, buffer_info->page_dma, |
Alexander Duyck | bf36c1a | 2008-07-08 15:11:40 -0700 | [diff] [blame] | 4490 | PAGE_SIZE / 2, PCI_DMA_FROMDEVICE); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4491 | buffer_info->page_dma = 0; |
Alexander Duyck | bf36c1a | 2008-07-08 15:11:40 -0700 | [diff] [blame] | 4492 | |
| 4493 | skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags++, |
| 4494 | buffer_info->page, |
| 4495 | buffer_info->page_offset, |
| 4496 | length); |
| 4497 | |
| 4498 | if ((adapter->rx_buffer_len > (PAGE_SIZE / 2)) || |
| 4499 | (page_count(buffer_info->page) != 1)) |
| 4500 | buffer_info->page = NULL; |
| 4501 | else |
| 4502 | get_page(buffer_info->page); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4503 | |
| 4504 | skb->len += length; |
| 4505 | skb->data_len += length; |
Alexander Duyck | bf36c1a | 2008-07-08 15:11:40 -0700 | [diff] [blame] | 4506 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4507 | skb->truesize += length; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4508 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4509 | |
Alexander Duyck | bf36c1a | 2008-07-08 15:11:40 -0700 | [diff] [blame] | 4510 | if (!(staterr & E1000_RXD_STAT_EOP)) { |
Alexander Duyck | b2d5653 | 2008-11-20 00:47:34 -0800 | [diff] [blame] | 4511 | buffer_info->skb = next_buffer->skb; |
| 4512 | buffer_info->dma = next_buffer->dma; |
| 4513 | next_buffer->skb = skb; |
| 4514 | next_buffer->dma = 0; |
Alexander Duyck | bf36c1a | 2008-07-08 15:11:40 -0700 | [diff] [blame] | 4515 | goto next_desc; |
| 4516 | } |
Alexander Duyck | 69d3ca5 | 2009-02-06 23:15:04 +0000 | [diff] [blame] | 4517 | send_up: |
Patrick Ohly | 33af6bc | 2009-02-12 05:03:43 +0000 | [diff] [blame] | 4518 | /* |
| 4519 | * If this bit is set, then the RX registers contain |
| 4520 | * the time stamp. No other packet will be time |
| 4521 | * stamped until we read these registers, so read the |
| 4522 | * registers to make them available again. Because |
| 4523 | * only one packet can be time stamped at a time, we |
| 4524 | * know that the register values must belong to this |
| 4525 | * one here and therefore we don't need to compare |
| 4526 | * any of the additional attributes stored for it. |
| 4527 | * |
| 4528 | * If nothing went wrong, then it should have a |
| 4529 | * skb_shared_tx that we can turn into a |
| 4530 | * skb_shared_hwtstamps. |
| 4531 | * |
| 4532 | * TODO: can time stamping be triggered (thus locking |
| 4533 | * the registers) without the packet reaching this point |
| 4534 | * here? In that case RX time stamping would get stuck. |
| 4535 | * |
| 4536 | * TODO: in "time stamp all packets" mode this bit is |
| 4537 | * not set. Need a global flag for this mode and then |
| 4538 | * always read the registers. Cannot be done without |
| 4539 | * a race condition. |
| 4540 | */ |
| 4541 | if (unlikely(staterr & E1000_RXD_STAT_TS)) { |
| 4542 | u64 regval; |
| 4543 | u64 ns; |
| 4544 | struct skb_shared_hwtstamps *shhwtstamps = |
| 4545 | skb_hwtstamps(skb); |
| 4546 | |
| 4547 | WARN(!(rd32(E1000_TSYNCRXCTL) & E1000_TSYNCRXCTL_VALID), |
| 4548 | "igb: no RX time stamp available for time stamped packet"); |
| 4549 | regval = rd32(E1000_RXSTMPL); |
| 4550 | regval |= (u64)rd32(E1000_RXSTMPH) << 32; |
| 4551 | ns = timecounter_cyc2time(&adapter->clock, regval); |
| 4552 | timecompare_update(&adapter->compare, ns); |
| 4553 | memset(shhwtstamps, 0, sizeof(*shhwtstamps)); |
| 4554 | shhwtstamps->hwtstamp = ns_to_ktime(ns); |
| 4555 | shhwtstamps->syststamp = |
| 4556 | timecompare_transform(&adapter->compare, ns); |
| 4557 | } |
| 4558 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4559 | if (staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) { |
| 4560 | dev_kfree_skb_irq(skb); |
| 4561 | goto next_desc; |
| 4562 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4563 | |
| 4564 | total_bytes += skb->len; |
| 4565 | total_packets++; |
| 4566 | |
| 4567 | igb_rx_checksum_adv(adapter, staterr, skb); |
| 4568 | |
| 4569 | skb->protocol = eth_type_trans(skb, netdev); |
| 4570 | |
Alexander Duyck | d335252 | 2008-07-08 15:12:13 -0700 | [diff] [blame] | 4571 | igb_receive_skb(rx_ring, staterr, rx_desc, skb); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4572 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4573 | next_desc: |
| 4574 | rx_desc->wb.upper.status_error = 0; |
| 4575 | |
| 4576 | /* return some buffers to hardware, one at a time is too slow */ |
| 4577 | if (cleaned_count >= IGB_RX_BUFFER_WRITE) { |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 4578 | igb_alloc_rx_buffers_adv(rx_ring, cleaned_count); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4579 | cleaned_count = 0; |
| 4580 | } |
| 4581 | |
| 4582 | /* use prefetched values */ |
| 4583 | rx_desc = next_rxd; |
| 4584 | buffer_info = next_buffer; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4585 | staterr = le32_to_cpu(rx_desc->wb.upper.status_error); |
| 4586 | } |
Alexander Duyck | bf36c1a | 2008-07-08 15:11:40 -0700 | [diff] [blame] | 4587 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4588 | rx_ring->next_to_clean = i; |
| 4589 | cleaned_count = IGB_DESC_UNUSED(rx_ring); |
| 4590 | |
| 4591 | if (cleaned_count) |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 4592 | igb_alloc_rx_buffers_adv(rx_ring, cleaned_count); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4593 | |
| 4594 | rx_ring->total_packets += total_packets; |
| 4595 | rx_ring->total_bytes += total_bytes; |
| 4596 | rx_ring->rx_stats.packets += total_packets; |
| 4597 | rx_ring->rx_stats.bytes += total_bytes; |
| 4598 | adapter->net_stats.rx_bytes += total_bytes; |
| 4599 | adapter->net_stats.rx_packets += total_packets; |
| 4600 | return cleaned; |
| 4601 | } |
| 4602 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4603 | /** |
| 4604 | * igb_alloc_rx_buffers_adv - Replace used receive buffers; packet split |
| 4605 | * @adapter: address of board private structure |
| 4606 | **/ |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 4607 | static void igb_alloc_rx_buffers_adv(struct igb_ring *rx_ring, |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4608 | int cleaned_count) |
| 4609 | { |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 4610 | struct igb_adapter *adapter = rx_ring->adapter; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4611 | struct net_device *netdev = adapter->netdev; |
| 4612 | struct pci_dev *pdev = adapter->pdev; |
| 4613 | union e1000_adv_rx_desc *rx_desc; |
| 4614 | struct igb_buffer *buffer_info; |
| 4615 | struct sk_buff *skb; |
| 4616 | unsigned int i; |
Alexander Duyck | db76176 | 2009-02-06 23:15:25 +0000 | [diff] [blame] | 4617 | int bufsz; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4618 | |
| 4619 | i = rx_ring->next_to_use; |
| 4620 | buffer_info = &rx_ring->buffer_info[i]; |
| 4621 | |
Alexander Duyck | db76176 | 2009-02-06 23:15:25 +0000 | [diff] [blame] | 4622 | if (adapter->rx_ps_hdr_size) |
| 4623 | bufsz = adapter->rx_ps_hdr_size; |
| 4624 | else |
| 4625 | bufsz = adapter->rx_buffer_len; |
| 4626 | bufsz += NET_IP_ALIGN; |
| 4627 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4628 | while (cleaned_count--) { |
| 4629 | rx_desc = E1000_RX_DESC_ADV(*rx_ring, i); |
| 4630 | |
Alexander Duyck | bf36c1a | 2008-07-08 15:11:40 -0700 | [diff] [blame] | 4631 | if (adapter->rx_ps_hdr_size && !buffer_info->page_dma) { |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4632 | if (!buffer_info->page) { |
Alexander Duyck | bf36c1a | 2008-07-08 15:11:40 -0700 | [diff] [blame] | 4633 | buffer_info->page = alloc_page(GFP_ATOMIC); |
| 4634 | if (!buffer_info->page) { |
| 4635 | adapter->alloc_rx_buff_failed++; |
| 4636 | goto no_buffers; |
| 4637 | } |
| 4638 | buffer_info->page_offset = 0; |
| 4639 | } else { |
| 4640 | buffer_info->page_offset ^= PAGE_SIZE / 2; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4641 | } |
| 4642 | buffer_info->page_dma = |
Alexander Duyck | db76176 | 2009-02-06 23:15:25 +0000 | [diff] [blame] | 4643 | pci_map_page(pdev, buffer_info->page, |
Alexander Duyck | bf36c1a | 2008-07-08 15:11:40 -0700 | [diff] [blame] | 4644 | buffer_info->page_offset, |
| 4645 | PAGE_SIZE / 2, |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4646 | PCI_DMA_FROMDEVICE); |
| 4647 | } |
| 4648 | |
| 4649 | if (!buffer_info->skb) { |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4650 | skb = netdev_alloc_skb(netdev, bufsz); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4651 | if (!skb) { |
| 4652 | adapter->alloc_rx_buff_failed++; |
| 4653 | goto no_buffers; |
| 4654 | } |
| 4655 | |
| 4656 | /* Make buffer alignment 2 beyond a 16 byte boundary |
| 4657 | * this will result in a 16 byte aligned IP header after |
| 4658 | * the 14 byte MAC header is removed |
| 4659 | */ |
| 4660 | skb_reserve(skb, NET_IP_ALIGN); |
| 4661 | |
| 4662 | buffer_info->skb = skb; |
| 4663 | buffer_info->dma = pci_map_single(pdev, skb->data, |
| 4664 | bufsz, |
| 4665 | PCI_DMA_FROMDEVICE); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4666 | } |
| 4667 | /* Refresh the desc even if buffer_addrs didn't change because |
| 4668 | * each write-back erases this info. */ |
| 4669 | if (adapter->rx_ps_hdr_size) { |
| 4670 | rx_desc->read.pkt_addr = |
| 4671 | cpu_to_le64(buffer_info->page_dma); |
| 4672 | rx_desc->read.hdr_addr = cpu_to_le64(buffer_info->dma); |
| 4673 | } else { |
| 4674 | rx_desc->read.pkt_addr = |
| 4675 | cpu_to_le64(buffer_info->dma); |
| 4676 | rx_desc->read.hdr_addr = 0; |
| 4677 | } |
| 4678 | |
| 4679 | i++; |
| 4680 | if (i == rx_ring->count) |
| 4681 | i = 0; |
| 4682 | buffer_info = &rx_ring->buffer_info[i]; |
| 4683 | } |
| 4684 | |
| 4685 | no_buffers: |
| 4686 | if (rx_ring->next_to_use != i) { |
| 4687 | rx_ring->next_to_use = i; |
| 4688 | if (i == 0) |
| 4689 | i = (rx_ring->count - 1); |
| 4690 | else |
| 4691 | i--; |
| 4692 | |
| 4693 | /* Force memory writes to complete before letting h/w |
| 4694 | * know there are new descriptors to fetch. (Only |
| 4695 | * applicable for weak-ordered memory model archs, |
| 4696 | * such as IA-64). */ |
| 4697 | wmb(); |
| 4698 | writel(i, adapter->hw.hw_addr + rx_ring->tail); |
| 4699 | } |
| 4700 | } |
| 4701 | |
| 4702 | /** |
| 4703 | * igb_mii_ioctl - |
| 4704 | * @netdev: |
| 4705 | * @ifreq: |
| 4706 | * @cmd: |
| 4707 | **/ |
| 4708 | static int igb_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) |
| 4709 | { |
| 4710 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 4711 | struct mii_ioctl_data *data = if_mii(ifr); |
| 4712 | |
| 4713 | if (adapter->hw.phy.media_type != e1000_media_type_copper) |
| 4714 | return -EOPNOTSUPP; |
| 4715 | |
| 4716 | switch (cmd) { |
| 4717 | case SIOCGMIIPHY: |
| 4718 | data->phy_id = adapter->hw.phy.addr; |
| 4719 | break; |
| 4720 | case SIOCGMIIREG: |
| 4721 | if (!capable(CAP_NET_ADMIN)) |
| 4722 | return -EPERM; |
Alexander Duyck | f5f4cf0 | 2008-11-21 21:30:24 -0800 | [diff] [blame] | 4723 | if (igb_read_phy_reg(&adapter->hw, data->reg_num & 0x1F, |
| 4724 | &data->val_out)) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4725 | return -EIO; |
| 4726 | break; |
| 4727 | case SIOCSMIIREG: |
| 4728 | default: |
| 4729 | return -EOPNOTSUPP; |
| 4730 | } |
| 4731 | return 0; |
| 4732 | } |
| 4733 | |
| 4734 | /** |
Patrick Ohly | c6cb090 | 2009-02-12 05:03:42 +0000 | [diff] [blame] | 4735 | * igb_hwtstamp_ioctl - control hardware time stamping |
| 4736 | * @netdev: |
| 4737 | * @ifreq: |
| 4738 | * @cmd: |
| 4739 | * |
Patrick Ohly | 33af6bc | 2009-02-12 05:03:43 +0000 | [diff] [blame] | 4740 | * Outgoing time stamping can be enabled and disabled. Play nice and |
| 4741 | * disable it when requested, although it shouldn't case any overhead |
| 4742 | * when no packet needs it. At most one packet in the queue may be |
| 4743 | * marked for time stamping, otherwise it would be impossible to tell |
| 4744 | * for sure to which packet the hardware time stamp belongs. |
| 4745 | * |
| 4746 | * Incoming time stamping has to be configured via the hardware |
| 4747 | * filters. Not all combinations are supported, in particular event |
| 4748 | * type has to be specified. Matching the kind of event packet is |
| 4749 | * not supported, with the exception of "all V2 events regardless of |
| 4750 | * level 2 or 4". |
| 4751 | * |
Patrick Ohly | c6cb090 | 2009-02-12 05:03:42 +0000 | [diff] [blame] | 4752 | **/ |
| 4753 | static int igb_hwtstamp_ioctl(struct net_device *netdev, |
| 4754 | struct ifreq *ifr, int cmd) |
| 4755 | { |
Patrick Ohly | 33af6bc | 2009-02-12 05:03:43 +0000 | [diff] [blame] | 4756 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 4757 | struct e1000_hw *hw = &adapter->hw; |
Patrick Ohly | c6cb090 | 2009-02-12 05:03:42 +0000 | [diff] [blame] | 4758 | struct hwtstamp_config config; |
Patrick Ohly | 33af6bc | 2009-02-12 05:03:43 +0000 | [diff] [blame] | 4759 | u32 tsync_tx_ctl_bit = E1000_TSYNCTXCTL_ENABLED; |
| 4760 | u32 tsync_rx_ctl_bit = E1000_TSYNCRXCTL_ENABLED; |
| 4761 | u32 tsync_rx_ctl_type = 0; |
| 4762 | u32 tsync_rx_cfg = 0; |
| 4763 | int is_l4 = 0; |
| 4764 | int is_l2 = 0; |
| 4765 | short port = 319; /* PTP */ |
| 4766 | u32 regval; |
Patrick Ohly | c6cb090 | 2009-02-12 05:03:42 +0000 | [diff] [blame] | 4767 | |
| 4768 | if (copy_from_user(&config, ifr->ifr_data, sizeof(config))) |
| 4769 | return -EFAULT; |
| 4770 | |
| 4771 | /* reserved for future extensions */ |
| 4772 | if (config.flags) |
| 4773 | return -EINVAL; |
| 4774 | |
Patrick Ohly | 33af6bc | 2009-02-12 05:03:43 +0000 | [diff] [blame] | 4775 | switch (config.tx_type) { |
| 4776 | case HWTSTAMP_TX_OFF: |
| 4777 | tsync_tx_ctl_bit = 0; |
| 4778 | break; |
| 4779 | case HWTSTAMP_TX_ON: |
| 4780 | tsync_tx_ctl_bit = E1000_TSYNCTXCTL_ENABLED; |
| 4781 | break; |
| 4782 | default: |
| 4783 | return -ERANGE; |
| 4784 | } |
Patrick Ohly | c6cb090 | 2009-02-12 05:03:42 +0000 | [diff] [blame] | 4785 | |
Patrick Ohly | 33af6bc | 2009-02-12 05:03:43 +0000 | [diff] [blame] | 4786 | switch (config.rx_filter) { |
| 4787 | case HWTSTAMP_FILTER_NONE: |
| 4788 | tsync_rx_ctl_bit = 0; |
| 4789 | break; |
| 4790 | case HWTSTAMP_FILTER_PTP_V1_L4_EVENT: |
| 4791 | case HWTSTAMP_FILTER_PTP_V2_L4_EVENT: |
| 4792 | case HWTSTAMP_FILTER_PTP_V2_L2_EVENT: |
| 4793 | case HWTSTAMP_FILTER_ALL: |
| 4794 | /* |
| 4795 | * register TSYNCRXCFG must be set, therefore it is not |
| 4796 | * possible to time stamp both Sync and Delay_Req messages |
| 4797 | * => fall back to time stamping all packets |
| 4798 | */ |
| 4799 | tsync_rx_ctl_type = E1000_TSYNCRXCTL_TYPE_ALL; |
| 4800 | config.rx_filter = HWTSTAMP_FILTER_ALL; |
| 4801 | break; |
| 4802 | case HWTSTAMP_FILTER_PTP_V1_L4_SYNC: |
| 4803 | tsync_rx_ctl_type = E1000_TSYNCRXCTL_TYPE_L4_V1; |
| 4804 | tsync_rx_cfg = E1000_TSYNCRXCFG_PTP_V1_SYNC_MESSAGE; |
| 4805 | is_l4 = 1; |
| 4806 | break; |
| 4807 | case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ: |
| 4808 | tsync_rx_ctl_type = E1000_TSYNCRXCTL_TYPE_L4_V1; |
| 4809 | tsync_rx_cfg = E1000_TSYNCRXCFG_PTP_V1_DELAY_REQ_MESSAGE; |
| 4810 | is_l4 = 1; |
| 4811 | break; |
| 4812 | case HWTSTAMP_FILTER_PTP_V2_L2_SYNC: |
| 4813 | case HWTSTAMP_FILTER_PTP_V2_L4_SYNC: |
| 4814 | tsync_rx_ctl_type = E1000_TSYNCRXCTL_TYPE_L2_L4_V2; |
| 4815 | tsync_rx_cfg = E1000_TSYNCRXCFG_PTP_V2_SYNC_MESSAGE; |
| 4816 | is_l2 = 1; |
| 4817 | is_l4 = 1; |
| 4818 | config.rx_filter = HWTSTAMP_FILTER_SOME; |
| 4819 | break; |
| 4820 | case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ: |
| 4821 | case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ: |
| 4822 | tsync_rx_ctl_type = E1000_TSYNCRXCTL_TYPE_L2_L4_V2; |
| 4823 | tsync_rx_cfg = E1000_TSYNCRXCFG_PTP_V2_DELAY_REQ_MESSAGE; |
| 4824 | is_l2 = 1; |
| 4825 | is_l4 = 1; |
| 4826 | config.rx_filter = HWTSTAMP_FILTER_SOME; |
| 4827 | break; |
| 4828 | case HWTSTAMP_FILTER_PTP_V2_EVENT: |
| 4829 | case HWTSTAMP_FILTER_PTP_V2_SYNC: |
| 4830 | case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ: |
| 4831 | tsync_rx_ctl_type = E1000_TSYNCRXCTL_TYPE_EVENT_V2; |
| 4832 | config.rx_filter = HWTSTAMP_FILTER_PTP_V2_EVENT; |
| 4833 | is_l2 = 1; |
| 4834 | break; |
| 4835 | default: |
| 4836 | return -ERANGE; |
| 4837 | } |
| 4838 | |
| 4839 | /* enable/disable TX */ |
| 4840 | regval = rd32(E1000_TSYNCTXCTL); |
| 4841 | regval = (regval & ~E1000_TSYNCTXCTL_ENABLED) | tsync_tx_ctl_bit; |
| 4842 | wr32(E1000_TSYNCTXCTL, regval); |
| 4843 | |
| 4844 | /* enable/disable RX, define which PTP packets are time stamped */ |
| 4845 | regval = rd32(E1000_TSYNCRXCTL); |
| 4846 | regval = (regval & ~E1000_TSYNCRXCTL_ENABLED) | tsync_rx_ctl_bit; |
| 4847 | regval = (regval & ~0xE) | tsync_rx_ctl_type; |
| 4848 | wr32(E1000_TSYNCRXCTL, regval); |
| 4849 | wr32(E1000_TSYNCRXCFG, tsync_rx_cfg); |
| 4850 | |
| 4851 | /* |
| 4852 | * Ethertype Filter Queue Filter[0][15:0] = 0x88F7 |
| 4853 | * (Ethertype to filter on) |
| 4854 | * Ethertype Filter Queue Filter[0][26] = 0x1 (Enable filter) |
| 4855 | * Ethertype Filter Queue Filter[0][30] = 0x1 (Enable Timestamping) |
| 4856 | */ |
| 4857 | wr32(E1000_ETQF0, is_l2 ? 0x440088f7 : 0); |
| 4858 | |
| 4859 | /* L4 Queue Filter[0]: only filter by source and destination port */ |
| 4860 | wr32(E1000_SPQF0, htons(port)); |
| 4861 | wr32(E1000_IMIREXT(0), is_l4 ? |
| 4862 | ((1<<12) | (1<<19) /* bypass size and control flags */) : 0); |
| 4863 | wr32(E1000_IMIR(0), is_l4 ? |
| 4864 | (htons(port) |
| 4865 | | (0<<16) /* immediate interrupt disabled */ |
| 4866 | | 0 /* (1<<17) bit cleared: do not bypass |
| 4867 | destination port check */) |
| 4868 | : 0); |
| 4869 | wr32(E1000_FTQF0, is_l4 ? |
| 4870 | (0x11 /* UDP */ |
| 4871 | | (1<<15) /* VF not compared */ |
| 4872 | | (1<<27) /* Enable Timestamping */ |
| 4873 | | (7<<28) /* only source port filter enabled, |
| 4874 | source/target address and protocol |
| 4875 | masked */) |
| 4876 | : ((1<<15) | (15<<28) /* all mask bits set = filter not |
| 4877 | enabled */)); |
| 4878 | |
| 4879 | wrfl(); |
| 4880 | |
| 4881 | adapter->hwtstamp_config = config; |
| 4882 | |
| 4883 | /* clear TX/RX time stamp registers, just to be sure */ |
| 4884 | regval = rd32(E1000_TXSTMPH); |
| 4885 | regval = rd32(E1000_RXSTMPH); |
| 4886 | |
| 4887 | return copy_to_user(ifr->ifr_data, &config, sizeof(config)) ? |
| 4888 | -EFAULT : 0; |
Patrick Ohly | c6cb090 | 2009-02-12 05:03:42 +0000 | [diff] [blame] | 4889 | } |
| 4890 | |
| 4891 | /** |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4892 | * igb_ioctl - |
| 4893 | * @netdev: |
| 4894 | * @ifreq: |
| 4895 | * @cmd: |
| 4896 | **/ |
| 4897 | static int igb_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) |
| 4898 | { |
| 4899 | switch (cmd) { |
| 4900 | case SIOCGMIIPHY: |
| 4901 | case SIOCGMIIREG: |
| 4902 | case SIOCSMIIREG: |
| 4903 | return igb_mii_ioctl(netdev, ifr, cmd); |
Patrick Ohly | c6cb090 | 2009-02-12 05:03:42 +0000 | [diff] [blame] | 4904 | case SIOCSHWTSTAMP: |
| 4905 | return igb_hwtstamp_ioctl(netdev, ifr, cmd); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4906 | default: |
| 4907 | return -EOPNOTSUPP; |
| 4908 | } |
| 4909 | } |
| 4910 | |
| 4911 | static void igb_vlan_rx_register(struct net_device *netdev, |
| 4912 | struct vlan_group *grp) |
| 4913 | { |
| 4914 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 4915 | struct e1000_hw *hw = &adapter->hw; |
| 4916 | u32 ctrl, rctl; |
| 4917 | |
| 4918 | igb_irq_disable(adapter); |
| 4919 | adapter->vlgrp = grp; |
| 4920 | |
| 4921 | if (grp) { |
| 4922 | /* enable VLAN tag insert/strip */ |
| 4923 | ctrl = rd32(E1000_CTRL); |
| 4924 | ctrl |= E1000_CTRL_VME; |
| 4925 | wr32(E1000_CTRL, ctrl); |
| 4926 | |
| 4927 | /* enable VLAN receive filtering */ |
| 4928 | rctl = rd32(E1000_RCTL); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4929 | rctl &= ~E1000_RCTL_CFIEN; |
| 4930 | wr32(E1000_RCTL, rctl); |
| 4931 | igb_update_mng_vlan(adapter); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4932 | } else { |
| 4933 | /* disable VLAN tag insert/strip */ |
| 4934 | ctrl = rd32(E1000_CTRL); |
| 4935 | ctrl &= ~E1000_CTRL_VME; |
| 4936 | wr32(E1000_CTRL, ctrl); |
| 4937 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4938 | if (adapter->mng_vlan_id != (u16)IGB_MNG_VLAN_NONE) { |
| 4939 | igb_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); |
| 4940 | adapter->mng_vlan_id = IGB_MNG_VLAN_NONE; |
| 4941 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4942 | } |
| 4943 | |
Alexander Duyck | e173952 | 2009-02-19 20:39:44 -0800 | [diff] [blame] | 4944 | igb_rlpml_set(adapter); |
| 4945 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4946 | if (!test_bit(__IGB_DOWN, &adapter->state)) |
| 4947 | igb_irq_enable(adapter); |
| 4948 | } |
| 4949 | |
| 4950 | static void igb_vlan_rx_add_vid(struct net_device *netdev, u16 vid) |
| 4951 | { |
| 4952 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 4953 | struct e1000_hw *hw = &adapter->hw; |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 4954 | int pf_id = adapter->vfs_allocated_count; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4955 | |
Alexander Duyck | 28b0759 | 2009-02-06 23:20:31 +0000 | [diff] [blame] | 4956 | if ((hw->mng_cookie.status & |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4957 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN) && |
| 4958 | (vid == adapter->mng_vlan_id)) |
| 4959 | return; |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 4960 | |
| 4961 | /* add vid to vlvf if sr-iov is enabled, |
| 4962 | * if that fails add directly to filter table */ |
| 4963 | if (igb_vlvf_set(adapter, vid, true, pf_id)) |
| 4964 | igb_vfta_set(hw, vid, true); |
| 4965 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4966 | } |
| 4967 | |
| 4968 | static void igb_vlan_rx_kill_vid(struct net_device *netdev, u16 vid) |
| 4969 | { |
| 4970 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 4971 | struct e1000_hw *hw = &adapter->hw; |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 4972 | int pf_id = adapter->vfs_allocated_count; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4973 | |
| 4974 | igb_irq_disable(adapter); |
| 4975 | vlan_group_set_device(adapter->vlgrp, vid, NULL); |
| 4976 | |
| 4977 | if (!test_bit(__IGB_DOWN, &adapter->state)) |
| 4978 | igb_irq_enable(adapter); |
| 4979 | |
| 4980 | if ((adapter->hw.mng_cookie.status & |
| 4981 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN) && |
| 4982 | (vid == adapter->mng_vlan_id)) { |
| 4983 | /* release control to f/w */ |
| 4984 | igb_release_hw_control(adapter); |
| 4985 | return; |
| 4986 | } |
| 4987 | |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 4988 | /* remove vid from vlvf if sr-iov is enabled, |
| 4989 | * if not in vlvf remove from vfta */ |
| 4990 | if (igb_vlvf_set(adapter, vid, false, pf_id)) |
| 4991 | igb_vfta_set(hw, vid, false); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4992 | } |
| 4993 | |
| 4994 | static void igb_restore_vlan(struct igb_adapter *adapter) |
| 4995 | { |
| 4996 | igb_vlan_rx_register(adapter->netdev, adapter->vlgrp); |
| 4997 | |
| 4998 | if (adapter->vlgrp) { |
| 4999 | u16 vid; |
| 5000 | for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) { |
| 5001 | if (!vlan_group_get_device(adapter->vlgrp, vid)) |
| 5002 | continue; |
| 5003 | igb_vlan_rx_add_vid(adapter->netdev, vid); |
| 5004 | } |
| 5005 | } |
| 5006 | } |
| 5007 | |
| 5008 | int igb_set_spd_dplx(struct igb_adapter *adapter, u16 spddplx) |
| 5009 | { |
| 5010 | struct e1000_mac_info *mac = &adapter->hw.mac; |
| 5011 | |
| 5012 | mac->autoneg = 0; |
| 5013 | |
| 5014 | /* Fiber NICs only allow 1000 gbps Full duplex */ |
| 5015 | if ((adapter->hw.phy.media_type == e1000_media_type_fiber) && |
| 5016 | spddplx != (SPEED_1000 + DUPLEX_FULL)) { |
| 5017 | dev_err(&adapter->pdev->dev, |
| 5018 | "Unsupported Speed/Duplex configuration\n"); |
| 5019 | return -EINVAL; |
| 5020 | } |
| 5021 | |
| 5022 | switch (spddplx) { |
| 5023 | case SPEED_10 + DUPLEX_HALF: |
| 5024 | mac->forced_speed_duplex = ADVERTISE_10_HALF; |
| 5025 | break; |
| 5026 | case SPEED_10 + DUPLEX_FULL: |
| 5027 | mac->forced_speed_duplex = ADVERTISE_10_FULL; |
| 5028 | break; |
| 5029 | case SPEED_100 + DUPLEX_HALF: |
| 5030 | mac->forced_speed_duplex = ADVERTISE_100_HALF; |
| 5031 | break; |
| 5032 | case SPEED_100 + DUPLEX_FULL: |
| 5033 | mac->forced_speed_duplex = ADVERTISE_100_FULL; |
| 5034 | break; |
| 5035 | case SPEED_1000 + DUPLEX_FULL: |
| 5036 | mac->autoneg = 1; |
| 5037 | adapter->hw.phy.autoneg_advertised = ADVERTISE_1000_FULL; |
| 5038 | break; |
| 5039 | case SPEED_1000 + DUPLEX_HALF: /* not supported */ |
| 5040 | default: |
| 5041 | dev_err(&adapter->pdev->dev, |
| 5042 | "Unsupported Speed/Duplex configuration\n"); |
| 5043 | return -EINVAL; |
| 5044 | } |
| 5045 | return 0; |
| 5046 | } |
| 5047 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5048 | static int igb_suspend(struct pci_dev *pdev, pm_message_t state) |
| 5049 | { |
| 5050 | struct net_device *netdev = pci_get_drvdata(pdev); |
| 5051 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 5052 | struct e1000_hw *hw = &adapter->hw; |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 5053 | u32 ctrl, rctl, status; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5054 | u32 wufc = adapter->wol; |
| 5055 | #ifdef CONFIG_PM |
| 5056 | int retval = 0; |
| 5057 | #endif |
| 5058 | |
| 5059 | netif_device_detach(netdev); |
| 5060 | |
Alexander Duyck | a88f10e | 2008-07-08 15:13:38 -0700 | [diff] [blame] | 5061 | if (netif_running(netdev)) |
| 5062 | igb_close(netdev); |
| 5063 | |
| 5064 | igb_reset_interrupt_capability(adapter); |
| 5065 | |
| 5066 | igb_free_queues(adapter); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5067 | |
| 5068 | #ifdef CONFIG_PM |
| 5069 | retval = pci_save_state(pdev); |
| 5070 | if (retval) |
| 5071 | return retval; |
| 5072 | #endif |
| 5073 | |
| 5074 | status = rd32(E1000_STATUS); |
| 5075 | if (status & E1000_STATUS_LU) |
| 5076 | wufc &= ~E1000_WUFC_LNKC; |
| 5077 | |
| 5078 | if (wufc) { |
| 5079 | igb_setup_rctl(adapter); |
| 5080 | igb_set_multi(netdev); |
| 5081 | |
| 5082 | /* turn on all-multi mode if wake on multicast is enabled */ |
| 5083 | if (wufc & E1000_WUFC_MC) { |
| 5084 | rctl = rd32(E1000_RCTL); |
| 5085 | rctl |= E1000_RCTL_MPE; |
| 5086 | wr32(E1000_RCTL, rctl); |
| 5087 | } |
| 5088 | |
| 5089 | ctrl = rd32(E1000_CTRL); |
| 5090 | /* advertise wake from D3Cold */ |
| 5091 | #define E1000_CTRL_ADVD3WUC 0x00100000 |
| 5092 | /* phy power management enable */ |
| 5093 | #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000 |
| 5094 | ctrl |= E1000_CTRL_ADVD3WUC; |
| 5095 | wr32(E1000_CTRL, ctrl); |
| 5096 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5097 | /* Allow time for pending master requests to run */ |
| 5098 | igb_disable_pcie_master(&adapter->hw); |
| 5099 | |
| 5100 | wr32(E1000_WUC, E1000_WUC_PME_EN); |
| 5101 | wr32(E1000_WUFC, wufc); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5102 | } else { |
| 5103 | wr32(E1000_WUC, 0); |
| 5104 | wr32(E1000_WUFC, 0); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5105 | } |
| 5106 | |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 5107 | /* make sure adapter isn't asleep if manageability/wol is enabled */ |
| 5108 | if (wufc || adapter->en_mng_pt) { |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5109 | pci_enable_wake(pdev, PCI_D3hot, 1); |
| 5110 | pci_enable_wake(pdev, PCI_D3cold, 1); |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 5111 | } else { |
| 5112 | igb_shutdown_fiber_serdes_link_82575(hw); |
| 5113 | pci_enable_wake(pdev, PCI_D3hot, 0); |
| 5114 | pci_enable_wake(pdev, PCI_D3cold, 0); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5115 | } |
| 5116 | |
| 5117 | /* Release control of h/w to f/w. If f/w is AMT enabled, this |
| 5118 | * would have already happened in close and is redundant. */ |
| 5119 | igb_release_hw_control(adapter); |
| 5120 | |
| 5121 | pci_disable_device(pdev); |
| 5122 | |
| 5123 | pci_set_power_state(pdev, pci_choose_state(pdev, state)); |
| 5124 | |
| 5125 | return 0; |
| 5126 | } |
| 5127 | |
| 5128 | #ifdef CONFIG_PM |
| 5129 | static int igb_resume(struct pci_dev *pdev) |
| 5130 | { |
| 5131 | struct net_device *netdev = pci_get_drvdata(pdev); |
| 5132 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 5133 | struct e1000_hw *hw = &adapter->hw; |
| 5134 | u32 err; |
| 5135 | |
| 5136 | pci_set_power_state(pdev, PCI_D0); |
| 5137 | pci_restore_state(pdev); |
Taku Izumi | 42bfd33a | 2008-06-20 12:10:30 +0900 | [diff] [blame] | 5138 | |
Alexander Duyck | aed5dec | 2009-02-06 23:16:04 +0000 | [diff] [blame] | 5139 | err = pci_enable_device_mem(pdev); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5140 | if (err) { |
| 5141 | dev_err(&pdev->dev, |
| 5142 | "igb: Cannot enable PCI device from suspend\n"); |
| 5143 | return err; |
| 5144 | } |
| 5145 | pci_set_master(pdev); |
| 5146 | |
| 5147 | pci_enable_wake(pdev, PCI_D3hot, 0); |
| 5148 | pci_enable_wake(pdev, PCI_D3cold, 0); |
| 5149 | |
Alexander Duyck | a88f10e | 2008-07-08 15:13:38 -0700 | [diff] [blame] | 5150 | igb_set_interrupt_capability(adapter); |
| 5151 | |
| 5152 | if (igb_alloc_queues(adapter)) { |
| 5153 | dev_err(&pdev->dev, "Unable to allocate memory for queues\n"); |
| 5154 | return -ENOMEM; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5155 | } |
| 5156 | |
| 5157 | /* e1000_power_up_phy(adapter); */ |
| 5158 | |
| 5159 | igb_reset(adapter); |
Alexander Duyck | a8564f0 | 2009-02-06 23:21:10 +0000 | [diff] [blame] | 5160 | |
| 5161 | /* let the f/w know that the h/w is now under the control of the |
| 5162 | * driver. */ |
| 5163 | igb_get_hw_control(adapter); |
| 5164 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5165 | wr32(E1000_WUS, ~0); |
| 5166 | |
Alexander Duyck | a88f10e | 2008-07-08 15:13:38 -0700 | [diff] [blame] | 5167 | if (netif_running(netdev)) { |
| 5168 | err = igb_open(netdev); |
| 5169 | if (err) |
| 5170 | return err; |
| 5171 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5172 | |
| 5173 | netif_device_attach(netdev); |
| 5174 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5175 | return 0; |
| 5176 | } |
| 5177 | #endif |
| 5178 | |
| 5179 | static void igb_shutdown(struct pci_dev *pdev) |
| 5180 | { |
| 5181 | igb_suspend(pdev, PMSG_SUSPEND); |
| 5182 | } |
| 5183 | |
| 5184 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 5185 | /* |
| 5186 | * Polling 'interrupt' - used by things like netconsole to send skbs |
| 5187 | * without having to re-enable interrupts. It's not called while |
| 5188 | * the interrupt routine is executing. |
| 5189 | */ |
| 5190 | static void igb_netpoll(struct net_device *netdev) |
| 5191 | { |
| 5192 | struct igb_adapter *adapter = netdev_priv(netdev); |
Alexander Duyck | eebbbdb | 2009-02-06 23:19:29 +0000 | [diff] [blame] | 5193 | struct e1000_hw *hw = &adapter->hw; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5194 | int i; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5195 | |
Alexander Duyck | eebbbdb | 2009-02-06 23:19:29 +0000 | [diff] [blame] | 5196 | if (!adapter->msix_entries) { |
| 5197 | igb_irq_disable(adapter); |
| 5198 | napi_schedule(&adapter->rx_ring[0].napi); |
| 5199 | return; |
| 5200 | } |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 5201 | |
Alexander Duyck | eebbbdb | 2009-02-06 23:19:29 +0000 | [diff] [blame] | 5202 | for (i = 0; i < adapter->num_tx_queues; i++) { |
| 5203 | struct igb_ring *tx_ring = &adapter->tx_ring[i]; |
| 5204 | wr32(E1000_EIMC, tx_ring->eims_value); |
| 5205 | igb_clean_tx_irq(tx_ring); |
| 5206 | wr32(E1000_EIMS, tx_ring->eims_value); |
| 5207 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5208 | |
Alexander Duyck | eebbbdb | 2009-02-06 23:19:29 +0000 | [diff] [blame] | 5209 | for (i = 0; i < adapter->num_rx_queues; i++) { |
| 5210 | struct igb_ring *rx_ring = &adapter->rx_ring[i]; |
| 5211 | wr32(E1000_EIMC, rx_ring->eims_value); |
| 5212 | napi_schedule(&rx_ring->napi); |
| 5213 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5214 | } |
| 5215 | #endif /* CONFIG_NET_POLL_CONTROLLER */ |
| 5216 | |
| 5217 | /** |
| 5218 | * igb_io_error_detected - called when PCI error is detected |
| 5219 | * @pdev: Pointer to PCI device |
| 5220 | * @state: The current pci connection state |
| 5221 | * |
| 5222 | * This function is called after a PCI bus error affecting |
| 5223 | * this device has been detected. |
| 5224 | */ |
| 5225 | static pci_ers_result_t igb_io_error_detected(struct pci_dev *pdev, |
| 5226 | pci_channel_state_t state) |
| 5227 | { |
| 5228 | struct net_device *netdev = pci_get_drvdata(pdev); |
| 5229 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 5230 | |
| 5231 | netif_device_detach(netdev); |
| 5232 | |
| 5233 | if (netif_running(netdev)) |
| 5234 | igb_down(adapter); |
| 5235 | pci_disable_device(pdev); |
| 5236 | |
| 5237 | /* Request a slot slot reset. */ |
| 5238 | return PCI_ERS_RESULT_NEED_RESET; |
| 5239 | } |
| 5240 | |
| 5241 | /** |
| 5242 | * igb_io_slot_reset - called after the pci bus has been reset. |
| 5243 | * @pdev: Pointer to PCI device |
| 5244 | * |
| 5245 | * Restart the card from scratch, as if from a cold-boot. Implementation |
| 5246 | * resembles the first-half of the igb_resume routine. |
| 5247 | */ |
| 5248 | static pci_ers_result_t igb_io_slot_reset(struct pci_dev *pdev) |
| 5249 | { |
| 5250 | struct net_device *netdev = pci_get_drvdata(pdev); |
| 5251 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 5252 | struct e1000_hw *hw = &adapter->hw; |
Alexander Duyck | 40a914f | 2008-11-27 00:24:37 -0800 | [diff] [blame] | 5253 | pci_ers_result_t result; |
Taku Izumi | 42bfd33a | 2008-06-20 12:10:30 +0900 | [diff] [blame] | 5254 | int err; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5255 | |
Alexander Duyck | aed5dec | 2009-02-06 23:16:04 +0000 | [diff] [blame] | 5256 | if (pci_enable_device_mem(pdev)) { |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5257 | dev_err(&pdev->dev, |
| 5258 | "Cannot re-enable PCI device after reset.\n"); |
Alexander Duyck | 40a914f | 2008-11-27 00:24:37 -0800 | [diff] [blame] | 5259 | result = PCI_ERS_RESULT_DISCONNECT; |
| 5260 | } else { |
| 5261 | pci_set_master(pdev); |
| 5262 | pci_restore_state(pdev); |
| 5263 | |
| 5264 | pci_enable_wake(pdev, PCI_D3hot, 0); |
| 5265 | pci_enable_wake(pdev, PCI_D3cold, 0); |
| 5266 | |
| 5267 | igb_reset(adapter); |
| 5268 | wr32(E1000_WUS, ~0); |
| 5269 | result = PCI_ERS_RESULT_RECOVERED; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5270 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5271 | |
Jeff Kirsher | ea943d4 | 2008-12-11 20:34:19 -0800 | [diff] [blame] | 5272 | err = pci_cleanup_aer_uncorrect_error_status(pdev); |
| 5273 | if (err) { |
| 5274 | dev_err(&pdev->dev, "pci_cleanup_aer_uncorrect_error_status " |
| 5275 | "failed 0x%0x\n", err); |
| 5276 | /* non-fatal, continue */ |
| 5277 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5278 | |
Alexander Duyck | 40a914f | 2008-11-27 00:24:37 -0800 | [diff] [blame] | 5279 | return result; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5280 | } |
| 5281 | |
| 5282 | /** |
| 5283 | * igb_io_resume - called when traffic can start flowing again. |
| 5284 | * @pdev: Pointer to PCI device |
| 5285 | * |
| 5286 | * This callback is called when the error recovery driver tells us that |
| 5287 | * its OK to resume normal operation. Implementation resembles the |
| 5288 | * second-half of the igb_resume routine. |
| 5289 | */ |
| 5290 | static void igb_io_resume(struct pci_dev *pdev) |
| 5291 | { |
| 5292 | struct net_device *netdev = pci_get_drvdata(pdev); |
| 5293 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 5294 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5295 | if (netif_running(netdev)) { |
| 5296 | if (igb_up(adapter)) { |
| 5297 | dev_err(&pdev->dev, "igb_up failed after reset\n"); |
| 5298 | return; |
| 5299 | } |
| 5300 | } |
| 5301 | |
| 5302 | netif_device_attach(netdev); |
| 5303 | |
| 5304 | /* let the f/w know that the h/w is now under the control of the |
| 5305 | * driver. */ |
| 5306 | igb_get_hw_control(adapter); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5307 | } |
| 5308 | |
Alexander Duyck | e173952 | 2009-02-19 20:39:44 -0800 | [diff] [blame] | 5309 | static inline void igb_set_vmolr(struct e1000_hw *hw, int vfn) |
| 5310 | { |
| 5311 | u32 reg_data; |
| 5312 | |
| 5313 | reg_data = rd32(E1000_VMOLR(vfn)); |
| 5314 | reg_data |= E1000_VMOLR_BAM | /* Accept broadcast */ |
| 5315 | E1000_VMOLR_ROPE | /* Accept packets matched in UTA */ |
| 5316 | E1000_VMOLR_ROMPE | /* Accept packets matched in MTA */ |
| 5317 | E1000_VMOLR_AUPE | /* Accept untagged packets */ |
| 5318 | E1000_VMOLR_STRVLAN; /* Strip vlan tags */ |
| 5319 | wr32(E1000_VMOLR(vfn), reg_data); |
| 5320 | } |
| 5321 | |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 5322 | static inline int igb_set_vf_rlpml(struct igb_adapter *adapter, int size, |
| 5323 | int vfn) |
Alexander Duyck | e173952 | 2009-02-19 20:39:44 -0800 | [diff] [blame] | 5324 | { |
| 5325 | struct e1000_hw *hw = &adapter->hw; |
| 5326 | u32 vmolr; |
| 5327 | |
| 5328 | vmolr = rd32(E1000_VMOLR(vfn)); |
| 5329 | vmolr &= ~E1000_VMOLR_RLPML_MASK; |
| 5330 | vmolr |= size | E1000_VMOLR_LPE; |
| 5331 | wr32(E1000_VMOLR(vfn), vmolr); |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 5332 | |
| 5333 | return 0; |
Alexander Duyck | e173952 | 2009-02-19 20:39:44 -0800 | [diff] [blame] | 5334 | } |
| 5335 | |
| 5336 | static inline void igb_set_rah_pool(struct e1000_hw *hw, int pool, int entry) |
| 5337 | { |
| 5338 | u32 reg_data; |
| 5339 | |
| 5340 | reg_data = rd32(E1000_RAH(entry)); |
| 5341 | reg_data &= ~E1000_RAH_POOL_MASK; |
| 5342 | reg_data |= E1000_RAH_POOL_1 << pool;; |
| 5343 | wr32(E1000_RAH(entry), reg_data); |
| 5344 | } |
| 5345 | |
| 5346 | static void igb_set_mc_list_pools(struct igb_adapter *adapter, |
| 5347 | int entry_count, u16 total_rar_filters) |
| 5348 | { |
| 5349 | struct e1000_hw *hw = &adapter->hw; |
| 5350 | int i = adapter->vfs_allocated_count + 1; |
| 5351 | |
| 5352 | if ((i + entry_count) < total_rar_filters) |
| 5353 | total_rar_filters = i + entry_count; |
| 5354 | |
| 5355 | for (; i < total_rar_filters; i++) |
| 5356 | igb_set_rah_pool(hw, adapter->vfs_allocated_count, i); |
| 5357 | } |
| 5358 | |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 5359 | static int igb_set_vf_mac(struct igb_adapter *adapter, |
| 5360 | int vf, unsigned char *mac_addr) |
| 5361 | { |
| 5362 | struct e1000_hw *hw = &adapter->hw; |
| 5363 | int rar_entry = vf + 1; /* VF MAC addresses start at entry 1 */ |
| 5364 | |
| 5365 | igb_rar_set(hw, mac_addr, rar_entry); |
| 5366 | |
Alexander Duyck | 3768011 | 2009-02-19 20:40:30 -0800 | [diff] [blame] | 5367 | memcpy(adapter->vf_data[vf].vf_mac_addresses, mac_addr, ETH_ALEN); |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 5368 | |
| 5369 | igb_set_rah_pool(hw, vf, rar_entry); |
| 5370 | |
| 5371 | return 0; |
| 5372 | } |
| 5373 | |
| 5374 | static void igb_vmm_control(struct igb_adapter *adapter) |
| 5375 | { |
| 5376 | struct e1000_hw *hw = &adapter->hw; |
| 5377 | u32 reg_data; |
| 5378 | |
| 5379 | if (!adapter->vfs_allocated_count) |
| 5380 | return; |
| 5381 | |
| 5382 | /* VF's need PF reset indication before they |
| 5383 | * can send/receive mail */ |
| 5384 | reg_data = rd32(E1000_CTRL_EXT); |
| 5385 | reg_data |= E1000_CTRL_EXT_PFRSTD; |
| 5386 | wr32(E1000_CTRL_EXT, reg_data); |
| 5387 | |
| 5388 | igb_vmdq_set_loopback_pf(hw, true); |
| 5389 | igb_vmdq_set_replication_pf(hw, true); |
| 5390 | } |
| 5391 | |
Alexander Duyck | 3768011 | 2009-02-19 20:40:30 -0800 | [diff] [blame] | 5392 | #ifdef CONFIG_PCI_IOV |
| 5393 | static ssize_t igb_show_num_vfs(struct device *dev, |
| 5394 | struct device_attribute *attr, char *buf) |
| 5395 | { |
| 5396 | struct igb_adapter *adapter = netdev_priv(to_net_dev(dev)); |
| 5397 | |
| 5398 | return sprintf(buf, "%d\n", adapter->vfs_allocated_count); |
| 5399 | } |
| 5400 | |
| 5401 | static ssize_t igb_set_num_vfs(struct device *dev, |
| 5402 | struct device_attribute *attr, |
| 5403 | const char *buf, size_t count) |
| 5404 | { |
| 5405 | struct net_device *netdev = to_net_dev(dev); |
| 5406 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 5407 | struct e1000_hw *hw = &adapter->hw; |
| 5408 | struct pci_dev *pdev = adapter->pdev; |
| 5409 | unsigned int num_vfs, i; |
| 5410 | unsigned char mac_addr[ETH_ALEN]; |
| 5411 | int err; |
| 5412 | |
| 5413 | sscanf(buf, "%u", &num_vfs); |
| 5414 | |
| 5415 | if (num_vfs > 7) |
| 5416 | num_vfs = 7; |
| 5417 | |
| 5418 | /* value unchanged do nothing */ |
| 5419 | if (num_vfs == adapter->vfs_allocated_count) |
| 5420 | return count; |
| 5421 | |
| 5422 | if (netdev->flags & IFF_UP) |
| 5423 | igb_close(netdev); |
| 5424 | |
| 5425 | igb_reset_interrupt_capability(adapter); |
| 5426 | igb_free_queues(adapter); |
| 5427 | adapter->tx_ring = NULL; |
| 5428 | adapter->rx_ring = NULL; |
| 5429 | adapter->vfs_allocated_count = 0; |
| 5430 | |
| 5431 | /* reclaim resources allocated to VFs since we are changing count */ |
| 5432 | if (adapter->vf_data) { |
| 5433 | /* disable iov and allow time for transactions to clear */ |
| 5434 | pci_disable_sriov(pdev); |
| 5435 | msleep(500); |
| 5436 | |
| 5437 | kfree(adapter->vf_data); |
| 5438 | adapter->vf_data = NULL; |
| 5439 | wr32(E1000_IOVCTL, E1000_IOVCTL_REUSE_VFQ); |
| 5440 | msleep(100); |
| 5441 | dev_info(&pdev->dev, "IOV Disabled\n"); |
| 5442 | } |
| 5443 | |
| 5444 | if (num_vfs) { |
| 5445 | adapter->vf_data = kcalloc(num_vfs, |
| 5446 | sizeof(struct vf_data_storage), |
| 5447 | GFP_KERNEL); |
| 5448 | if (!adapter->vf_data) { |
| 5449 | dev_err(&pdev->dev, "Could not allocate VF private " |
| 5450 | "data - IOV enable failed\n"); |
| 5451 | } else { |
| 5452 | err = pci_enable_sriov(pdev, num_vfs); |
| 5453 | if (!err) { |
| 5454 | adapter->vfs_allocated_count = num_vfs; |
| 5455 | dev_info(&pdev->dev, "%d vfs allocated\n", num_vfs); |
| 5456 | for (i = 0; i < adapter->vfs_allocated_count; i++) { |
| 5457 | random_ether_addr(mac_addr); |
| 5458 | igb_set_vf_mac(adapter, i, mac_addr); |
| 5459 | } |
| 5460 | } else { |
| 5461 | kfree(adapter->vf_data); |
| 5462 | adapter->vf_data = NULL; |
| 5463 | } |
| 5464 | } |
| 5465 | } |
| 5466 | |
| 5467 | igb_set_interrupt_capability(adapter); |
| 5468 | igb_alloc_queues(adapter); |
| 5469 | igb_reset(adapter); |
| 5470 | |
| 5471 | if (netdev->flags & IFF_UP) |
| 5472 | igb_open(netdev); |
| 5473 | |
| 5474 | return count; |
| 5475 | } |
| 5476 | #endif /* CONFIG_PCI_IOV */ |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5477 | /* igb_main.c */ |