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 }, |
Alexander Duyck | 9eb2341 | 2009-03-13 20:42:15 +0000 | [diff] [blame] | 65 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_NS), board_82575 }, |
Alexander Duyck | 747d49b | 2009-10-05 06:33:27 +0000 | [diff] [blame] | 66 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_NS_SERDES), board_82575 }, |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 67 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_FIBER), board_82575 }, |
| 68 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_SERDES), board_82575 }, |
Alexander Duyck | 4703bf7 | 2009-07-23 18:09:48 +0000 | [diff] [blame] | 69 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_SERDES_QUAD), board_82575 }, |
Alexander Duyck | c8ea5ea | 2009-03-13 20:42:35 +0000 | [diff] [blame] | 70 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_QUAD_COPPER), board_82575 }, |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 71 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82575EB_COPPER), board_82575 }, |
| 72 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82575EB_FIBER_SERDES), board_82575 }, |
| 73 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82575GB_QUAD_COPPER), board_82575 }, |
| 74 | /* required last entry */ |
| 75 | {0, } |
| 76 | }; |
| 77 | |
| 78 | MODULE_DEVICE_TABLE(pci, igb_pci_tbl); |
| 79 | |
| 80 | void igb_reset(struct igb_adapter *); |
| 81 | static int igb_setup_all_tx_resources(struct igb_adapter *); |
| 82 | static int igb_setup_all_rx_resources(struct igb_adapter *); |
| 83 | static void igb_free_all_tx_resources(struct igb_adapter *); |
| 84 | static void igb_free_all_rx_resources(struct igb_adapter *); |
Alexander Duyck | 06cf266 | 2009-10-27 15:53:25 +0000 | [diff] [blame] | 85 | static void igb_setup_mrqc(struct igb_adapter *); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 86 | void igb_update_stats(struct igb_adapter *); |
| 87 | static int igb_probe(struct pci_dev *, const struct pci_device_id *); |
| 88 | static void __devexit igb_remove(struct pci_dev *pdev); |
| 89 | static int igb_sw_init(struct igb_adapter *); |
| 90 | static int igb_open(struct net_device *); |
| 91 | static int igb_close(struct net_device *); |
| 92 | static void igb_configure_tx(struct igb_adapter *); |
| 93 | static void igb_configure_rx(struct igb_adapter *); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 94 | static void igb_clean_all_tx_rings(struct igb_adapter *); |
| 95 | static void igb_clean_all_rx_rings(struct igb_adapter *); |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 96 | static void igb_clean_tx_ring(struct igb_ring *); |
| 97 | static void igb_clean_rx_ring(struct igb_ring *); |
Alexander Duyck | ff41f8d | 2009-09-03 14:48:56 +0000 | [diff] [blame] | 98 | static void igb_set_rx_mode(struct net_device *); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 99 | static void igb_update_phy_info(unsigned long); |
| 100 | static void igb_watchdog(unsigned long); |
| 101 | static void igb_watchdog_task(struct work_struct *); |
Alexander Duyck | b1a436c | 2009-10-27 15:54:43 +0000 | [diff] [blame] | 102 | static netdev_tx_t igb_xmit_frame_adv(struct sk_buff *skb, struct net_device *); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 103 | static struct net_device_stats *igb_get_stats(struct net_device *); |
| 104 | static int igb_change_mtu(struct net_device *, int); |
| 105 | static int igb_set_mac(struct net_device *, void *); |
Alexander Duyck | 68d480c | 2009-10-05 06:33:08 +0000 | [diff] [blame] | 106 | static void igb_set_uta(struct igb_adapter *adapter); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 107 | static irqreturn_t igb_intr(int irq, void *); |
| 108 | static irqreturn_t igb_intr_msi(int irq, void *); |
| 109 | static irqreturn_t igb_msix_other(int irq, void *); |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 110 | static irqreturn_t igb_msix_ring(int irq, void *); |
Jeff Kirsher | 421e02f | 2008-10-17 11:08:31 -0700 | [diff] [blame] | 111 | #ifdef CONFIG_IGB_DCA |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 112 | static void igb_update_dca(struct igb_q_vector *); |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 113 | static void igb_setup_dca(struct igb_adapter *); |
Jeff Kirsher | 421e02f | 2008-10-17 11:08:31 -0700 | [diff] [blame] | 114 | #endif /* CONFIG_IGB_DCA */ |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 115 | static bool igb_clean_tx_irq(struct igb_q_vector *); |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 116 | static int igb_poll(struct napi_struct *, int); |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 117 | static bool igb_clean_rx_irq_adv(struct igb_q_vector *, int *, 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 | 26ad917 | 2009-10-05 06:32:49 +0000 | [diff] [blame] | 125 | static void igb_rar_set_qsel(struct igb_adapter *, u8 *, u32 , u8); |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 126 | static void igb_ping_all_vfs(struct igb_adapter *); |
| 127 | static void igb_msg_task(struct igb_adapter *); |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 128 | static void igb_vmm_control(struct igb_adapter *); |
Alexander Duyck | f2ca0db | 2009-10-27 23:46:57 +0000 | [diff] [blame] | 129 | static int igb_set_vf_mac(struct igb_adapter *, int, unsigned char *); |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 130 | static void igb_restore_vf_multicasts(struct igb_adapter *adapter); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 131 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 132 | #ifdef CONFIG_PM |
Rafael J. Wysocki | 3fe7c4c | 2009-03-31 21:23:50 +0000 | [diff] [blame] | 133 | static int igb_suspend(struct pci_dev *, pm_message_t); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 134 | static int igb_resume(struct pci_dev *); |
| 135 | #endif |
| 136 | static void igb_shutdown(struct pci_dev *); |
Jeff Kirsher | 421e02f | 2008-10-17 11:08:31 -0700 | [diff] [blame] | 137 | #ifdef CONFIG_IGB_DCA |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 138 | static int igb_notify_dca(struct notifier_block *, unsigned long, void *); |
| 139 | static struct notifier_block dca_notifier = { |
| 140 | .notifier_call = igb_notify_dca, |
| 141 | .next = NULL, |
| 142 | .priority = 0 |
| 143 | }; |
| 144 | #endif |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 145 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 146 | /* for netdump / net console */ |
| 147 | static void igb_netpoll(struct net_device *); |
| 148 | #endif |
Alexander Duyck | 3768011 | 2009-02-19 20:40:30 -0800 | [diff] [blame] | 149 | #ifdef CONFIG_PCI_IOV |
Alexander Duyck | 2a3abf6 | 2009-04-07 14:37:52 +0000 | [diff] [blame] | 150 | static unsigned int max_vfs = 0; |
| 151 | module_param(max_vfs, uint, 0); |
| 152 | MODULE_PARM_DESC(max_vfs, "Maximum number of virtual functions to allocate " |
| 153 | "per physical function"); |
| 154 | #endif /* CONFIG_PCI_IOV */ |
| 155 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 156 | static pci_ers_result_t igb_io_error_detected(struct pci_dev *, |
| 157 | pci_channel_state_t); |
| 158 | static pci_ers_result_t igb_io_slot_reset(struct pci_dev *); |
| 159 | static void igb_io_resume(struct pci_dev *); |
| 160 | |
| 161 | static struct pci_error_handlers igb_err_handler = { |
| 162 | .error_detected = igb_io_error_detected, |
| 163 | .slot_reset = igb_io_slot_reset, |
| 164 | .resume = igb_io_resume, |
| 165 | }; |
| 166 | |
| 167 | |
| 168 | static struct pci_driver igb_driver = { |
| 169 | .name = igb_driver_name, |
| 170 | .id_table = igb_pci_tbl, |
| 171 | .probe = igb_probe, |
| 172 | .remove = __devexit_p(igb_remove), |
| 173 | #ifdef CONFIG_PM |
| 174 | /* Power Managment Hooks */ |
| 175 | .suspend = igb_suspend, |
| 176 | .resume = igb_resume, |
| 177 | #endif |
| 178 | .shutdown = igb_shutdown, |
| 179 | .err_handler = &igb_err_handler |
| 180 | }; |
| 181 | |
| 182 | MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>"); |
| 183 | MODULE_DESCRIPTION("Intel(R) Gigabit Ethernet Network Driver"); |
| 184 | MODULE_LICENSE("GPL"); |
| 185 | MODULE_VERSION(DRV_VERSION); |
| 186 | |
Patrick Ohly | 38c845c | 2009-02-12 05:03:41 +0000 | [diff] [blame] | 187 | /** |
Patrick Ohly | 38c845c | 2009-02-12 05:03:41 +0000 | [diff] [blame] | 188 | * igb_read_clock - read raw cycle counter (to be used by time counter) |
| 189 | */ |
| 190 | static cycle_t igb_read_clock(const struct cyclecounter *tc) |
| 191 | { |
| 192 | struct igb_adapter *adapter = |
| 193 | container_of(tc, struct igb_adapter, cycles); |
| 194 | struct e1000_hw *hw = &adapter->hw; |
Alexander Duyck | c5b9bd5 | 2009-10-27 23:46:01 +0000 | [diff] [blame] | 195 | u64 stamp = 0; |
| 196 | int shift = 0; |
Patrick Ohly | 38c845c | 2009-02-12 05:03:41 +0000 | [diff] [blame] | 197 | |
Alexander Duyck | c5b9bd5 | 2009-10-27 23:46:01 +0000 | [diff] [blame] | 198 | stamp |= (u64)rd32(E1000_SYSTIML) << shift; |
| 199 | stamp |= (u64)rd32(E1000_SYSTIMH) << (shift + 32); |
Patrick Ohly | 38c845c | 2009-02-12 05:03:41 +0000 | [diff] [blame] | 200 | return stamp; |
| 201 | } |
| 202 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 203 | #ifdef DEBUG |
| 204 | /** |
| 205 | * igb_get_hw_dev_name - return device name string |
| 206 | * used by hardware layer to print debugging information |
| 207 | **/ |
| 208 | char *igb_get_hw_dev_name(struct e1000_hw *hw) |
| 209 | { |
| 210 | struct igb_adapter *adapter = hw->back; |
| 211 | return adapter->netdev->name; |
| 212 | } |
Patrick Ohly | 38c845c | 2009-02-12 05:03:41 +0000 | [diff] [blame] | 213 | |
| 214 | /** |
| 215 | * igb_get_time_str - format current NIC and system time as string |
| 216 | */ |
| 217 | static char *igb_get_time_str(struct igb_adapter *adapter, |
| 218 | char buffer[160]) |
| 219 | { |
| 220 | cycle_t hw = adapter->cycles.read(&adapter->cycles); |
| 221 | struct timespec nic = ns_to_timespec(timecounter_read(&adapter->clock)); |
| 222 | struct timespec sys; |
| 223 | struct timespec delta; |
| 224 | getnstimeofday(&sys); |
| 225 | |
| 226 | delta = timespec_sub(nic, sys); |
| 227 | |
| 228 | sprintf(buffer, |
Patrick Ohly | 33af6bc | 2009-02-12 05:03:43 +0000 | [diff] [blame] | 229 | "HW %llu, NIC %ld.%09lus, SYS %ld.%09lus, NIC-SYS %lds + %09luns", |
| 230 | hw, |
Patrick Ohly | 38c845c | 2009-02-12 05:03:41 +0000 | [diff] [blame] | 231 | (long)nic.tv_sec, nic.tv_nsec, |
| 232 | (long)sys.tv_sec, sys.tv_nsec, |
| 233 | (long)delta.tv_sec, delta.tv_nsec); |
| 234 | |
| 235 | return buffer; |
| 236 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 237 | #endif |
| 238 | |
| 239 | /** |
| 240 | * igb_init_module - Driver Registration Routine |
| 241 | * |
| 242 | * igb_init_module is the first routine called when the driver is |
| 243 | * loaded. All it does is register with the PCI subsystem. |
| 244 | **/ |
| 245 | static int __init igb_init_module(void) |
| 246 | { |
| 247 | int ret; |
| 248 | printk(KERN_INFO "%s - version %s\n", |
| 249 | igb_driver_string, igb_driver_version); |
| 250 | |
| 251 | printk(KERN_INFO "%s\n", igb_copyright); |
| 252 | |
Jeff Kirsher | 421e02f | 2008-10-17 11:08:31 -0700 | [diff] [blame] | 253 | #ifdef CONFIG_IGB_DCA |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 254 | dca_register_notify(&dca_notifier); |
| 255 | #endif |
Alexander Duyck | bbd98fe | 2009-01-31 00:52:30 -0800 | [diff] [blame] | 256 | ret = pci_register_driver(&igb_driver); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 257 | return ret; |
| 258 | } |
| 259 | |
| 260 | module_init(igb_init_module); |
| 261 | |
| 262 | /** |
| 263 | * igb_exit_module - Driver Exit Cleanup Routine |
| 264 | * |
| 265 | * igb_exit_module is called just before the driver is removed |
| 266 | * from memory. |
| 267 | **/ |
| 268 | static void __exit igb_exit_module(void) |
| 269 | { |
Jeff Kirsher | 421e02f | 2008-10-17 11:08:31 -0700 | [diff] [blame] | 270 | #ifdef CONFIG_IGB_DCA |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 271 | dca_unregister_notify(&dca_notifier); |
| 272 | #endif |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 273 | pci_unregister_driver(&igb_driver); |
| 274 | } |
| 275 | |
| 276 | module_exit(igb_exit_module); |
| 277 | |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 278 | #define Q_IDX_82576(i) (((i & 0x1) << 3) + (i >> 1)) |
| 279 | /** |
| 280 | * igb_cache_ring_register - Descriptor ring to register mapping |
| 281 | * @adapter: board private structure to initialize |
| 282 | * |
| 283 | * Once we know the feature-set enabled for the device, we'll cache |
| 284 | * the register offset the descriptor ring is assigned to. |
| 285 | **/ |
| 286 | static void igb_cache_ring_register(struct igb_adapter *adapter) |
| 287 | { |
Alexander Duyck | ee1b9f0 | 2009-10-27 23:49:40 +0000 | [diff] [blame] | 288 | int i = 0, j = 0; |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 289 | u32 rbase_offset = adapter->vfs_allocated_count; |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 290 | |
| 291 | switch (adapter->hw.mac.type) { |
| 292 | case e1000_82576: |
| 293 | /* The queues are allocated for virtualization such that VF 0 |
| 294 | * is allocated queues 0 and 8, VF 1 queues 1 and 9, etc. |
| 295 | * In order to avoid collision we start at the first free queue |
| 296 | * and continue consuming queues in the same sequence |
| 297 | */ |
Alexander Duyck | ee1b9f0 | 2009-10-27 23:49:40 +0000 | [diff] [blame] | 298 | if (adapter->vfs_allocated_count) { |
| 299 | for (; i < adapter->num_rx_queues; i++) |
| 300 | adapter->rx_ring[i].reg_idx = rbase_offset + |
| 301 | Q_IDX_82576(i); |
| 302 | for (; j < adapter->num_tx_queues; j++) |
| 303 | adapter->tx_ring[j].reg_idx = rbase_offset + |
| 304 | Q_IDX_82576(j); |
| 305 | } |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 306 | case e1000_82575: |
| 307 | default: |
Alexander Duyck | ee1b9f0 | 2009-10-27 23:49:40 +0000 | [diff] [blame] | 308 | for (; i < adapter->num_rx_queues; i++) |
| 309 | adapter->rx_ring[i].reg_idx = rbase_offset + i; |
| 310 | for (; j < adapter->num_tx_queues; j++) |
| 311 | adapter->tx_ring[j].reg_idx = rbase_offset + j; |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 312 | break; |
| 313 | } |
| 314 | } |
| 315 | |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 316 | static void igb_free_queues(struct igb_adapter *adapter) |
| 317 | { |
| 318 | kfree(adapter->tx_ring); |
| 319 | kfree(adapter->rx_ring); |
| 320 | |
| 321 | adapter->tx_ring = NULL; |
| 322 | adapter->rx_ring = NULL; |
| 323 | |
| 324 | adapter->num_rx_queues = 0; |
| 325 | adapter->num_tx_queues = 0; |
| 326 | } |
| 327 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 328 | /** |
| 329 | * igb_alloc_queues - Allocate memory for all rings |
| 330 | * @adapter: board private structure to initialize |
| 331 | * |
| 332 | * We allocate one ring per queue at run-time since we don't know the |
| 333 | * number of queues at compile-time. |
| 334 | **/ |
| 335 | static int igb_alloc_queues(struct igb_adapter *adapter) |
| 336 | { |
| 337 | int i; |
| 338 | |
| 339 | adapter->tx_ring = kcalloc(adapter->num_tx_queues, |
| 340 | sizeof(struct igb_ring), GFP_KERNEL); |
| 341 | if (!adapter->tx_ring) |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 342 | goto err; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 343 | |
| 344 | adapter->rx_ring = kcalloc(adapter->num_rx_queues, |
| 345 | sizeof(struct igb_ring), GFP_KERNEL); |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 346 | if (!adapter->rx_ring) |
| 347 | goto err; |
Alexander Duyck | 6eb5a7f | 2008-07-08 15:14:44 -0700 | [diff] [blame] | 348 | |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 349 | for (i = 0; i < adapter->num_tx_queues; i++) { |
| 350 | struct igb_ring *ring = &(adapter->tx_ring[i]); |
Alexander Duyck | 68fd991 | 2008-11-20 00:48:10 -0800 | [diff] [blame] | 351 | ring->count = adapter->tx_ring_count; |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 352 | ring->queue_index = i; |
Alexander Duyck | 8078529 | 2009-10-27 15:51:47 +0000 | [diff] [blame] | 353 | ring->pdev = adapter->pdev; |
Alexander Duyck | e694e96 | 2009-10-27 15:53:06 +0000 | [diff] [blame] | 354 | ring->netdev = adapter->netdev; |
Alexander Duyck | 85ad76b | 2009-10-27 15:52:46 +0000 | [diff] [blame] | 355 | /* For 82575, context index must be unique per ring. */ |
| 356 | if (adapter->hw.mac.type == e1000_82575) |
| 357 | ring->flags = IGB_RING_FLAG_TX_CTX_IDX; |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 358 | } |
Alexander Duyck | 85ad76b | 2009-10-27 15:52:46 +0000 | [diff] [blame] | 359 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 360 | for (i = 0; i < adapter->num_rx_queues; i++) { |
| 361 | struct igb_ring *ring = &(adapter->rx_ring[i]); |
Alexander Duyck | 68fd991 | 2008-11-20 00:48:10 -0800 | [diff] [blame] | 362 | ring->count = adapter->rx_ring_count; |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 363 | ring->queue_index = i; |
Alexander Duyck | 8078529 | 2009-10-27 15:51:47 +0000 | [diff] [blame] | 364 | ring->pdev = adapter->pdev; |
Alexander Duyck | e694e96 | 2009-10-27 15:53:06 +0000 | [diff] [blame] | 365 | ring->netdev = adapter->netdev; |
Alexander Duyck | 4c84485 | 2009-10-27 15:52:07 +0000 | [diff] [blame] | 366 | ring->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE; |
Alexander Duyck | 85ad76b | 2009-10-27 15:52:46 +0000 | [diff] [blame] | 367 | ring->flags = IGB_RING_FLAG_RX_CSUM; /* enable rx checksum */ |
| 368 | /* set flag indicating ring supports SCTP checksum offload */ |
| 369 | if (adapter->hw.mac.type >= e1000_82576) |
| 370 | ring->flags |= IGB_RING_FLAG_RX_SCTP_CSUM; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 371 | } |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 372 | |
| 373 | igb_cache_ring_register(adapter); |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 374 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 375 | return 0; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 376 | |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 377 | err: |
| 378 | igb_free_queues(adapter); |
Alexander Duyck | a88f10e | 2008-07-08 15:13:38 -0700 | [diff] [blame] | 379 | |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 380 | return -ENOMEM; |
Alexander Duyck | a88f10e | 2008-07-08 15:13:38 -0700 | [diff] [blame] | 381 | } |
| 382 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 383 | #define IGB_N0_QUEUE -1 |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 384 | static void igb_assign_vector(struct igb_q_vector *q_vector, int msix_vector) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 385 | { |
| 386 | u32 msixbm = 0; |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 387 | struct igb_adapter *adapter = q_vector->adapter; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 388 | struct e1000_hw *hw = &adapter->hw; |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 389 | u32 ivar, index; |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 390 | int rx_queue = IGB_N0_QUEUE; |
| 391 | int tx_queue = IGB_N0_QUEUE; |
| 392 | |
| 393 | if (q_vector->rx_ring) |
| 394 | rx_queue = q_vector->rx_ring->reg_idx; |
| 395 | if (q_vector->tx_ring) |
| 396 | tx_queue = q_vector->tx_ring->reg_idx; |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 397 | |
| 398 | switch (hw->mac.type) { |
| 399 | case e1000_82575: |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 400 | /* The 82575 assigns vectors using a bitmask, which matches the |
| 401 | bitmask for the EICR/EIMS/EIMC registers. To assign one |
| 402 | or more queues to a vector, we write the appropriate bits |
| 403 | into the MSIXBM register for that vector. */ |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 404 | if (rx_queue > IGB_N0_QUEUE) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 405 | msixbm = E1000_EICR_RX_QUEUE0 << rx_queue; |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 406 | if (tx_queue > IGB_N0_QUEUE) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 407 | msixbm |= E1000_EICR_TX_QUEUE0 << tx_queue; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 408 | array_wr32(E1000_MSIXBM(0), msix_vector, msixbm); |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 409 | q_vector->eims_value = msixbm; |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 410 | break; |
| 411 | case e1000_82576: |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 412 | /* 82576 uses a table-based method for assigning vectors. |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 413 | Each queue has a single entry in the table to which we write |
| 414 | a vector number along with a "valid" bit. Sadly, the layout |
| 415 | of the table is somewhat counterintuitive. */ |
| 416 | if (rx_queue > IGB_N0_QUEUE) { |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 417 | index = (rx_queue & 0x7); |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 418 | ivar = array_rd32(E1000_IVAR0, index); |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 419 | if (rx_queue < 8) { |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 420 | /* vector goes into low byte of register */ |
| 421 | ivar = ivar & 0xFFFFFF00; |
| 422 | ivar |= msix_vector | E1000_IVAR_VALID; |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 423 | } else { |
| 424 | /* vector goes into third byte of register */ |
| 425 | ivar = ivar & 0xFF00FFFF; |
| 426 | ivar |= (msix_vector | E1000_IVAR_VALID) << 16; |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 427 | } |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 428 | array_wr32(E1000_IVAR0, index, ivar); |
| 429 | } |
| 430 | if (tx_queue > IGB_N0_QUEUE) { |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 431 | index = (tx_queue & 0x7); |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 432 | ivar = array_rd32(E1000_IVAR0, index); |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 433 | if (tx_queue < 8) { |
Alexander Duyck | 26bc19e | 2008-12-26 01:34:11 -0800 | [diff] [blame] | 434 | /* vector goes into second byte of register */ |
| 435 | ivar = ivar & 0xFFFF00FF; |
| 436 | ivar |= (msix_vector | E1000_IVAR_VALID) << 8; |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 437 | } else { |
| 438 | /* vector goes into high byte of register */ |
| 439 | ivar = ivar & 0x00FFFFFF; |
| 440 | ivar |= (msix_vector | E1000_IVAR_VALID) << 24; |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 441 | } |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 442 | array_wr32(E1000_IVAR0, index, ivar); |
| 443 | } |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 444 | q_vector->eims_value = 1 << msix_vector; |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 445 | break; |
| 446 | default: |
| 447 | BUG(); |
| 448 | break; |
| 449 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 450 | } |
| 451 | |
| 452 | /** |
| 453 | * igb_configure_msix - Configure MSI-X hardware |
| 454 | * |
| 455 | * igb_configure_msix sets up the hardware to properly |
| 456 | * generate MSI-X interrupts. |
| 457 | **/ |
| 458 | static void igb_configure_msix(struct igb_adapter *adapter) |
| 459 | { |
| 460 | u32 tmp; |
| 461 | int i, vector = 0; |
| 462 | struct e1000_hw *hw = &adapter->hw; |
| 463 | |
| 464 | adapter->eims_enable_mask = 0; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 465 | |
| 466 | /* set vector for other causes, i.e. link changes */ |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 467 | switch (hw->mac.type) { |
| 468 | case e1000_82575: |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 469 | tmp = rd32(E1000_CTRL_EXT); |
| 470 | /* enable MSI-X PBA support*/ |
| 471 | tmp |= E1000_CTRL_EXT_PBA_CLR; |
| 472 | |
| 473 | /* Auto-Mask interrupts upon ICR read. */ |
| 474 | tmp |= E1000_CTRL_EXT_EIAME; |
| 475 | tmp |= E1000_CTRL_EXT_IRCA; |
| 476 | |
| 477 | wr32(E1000_CTRL_EXT, tmp); |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 478 | |
| 479 | /* enable msix_other interrupt */ |
| 480 | array_wr32(E1000_MSIXBM(0), vector++, |
| 481 | E1000_EIMS_OTHER); |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 482 | adapter->eims_other = E1000_EIMS_OTHER; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 483 | |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 484 | break; |
| 485 | |
| 486 | case e1000_82576: |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 487 | /* Turn on MSI-X capability first, or our settings |
| 488 | * won't stick. And it will take days to debug. */ |
| 489 | wr32(E1000_GPIE, E1000_GPIE_MSIX_MODE | |
| 490 | E1000_GPIE_PBA | E1000_GPIE_EIAME | |
| 491 | E1000_GPIE_NSICR); |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 492 | |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 493 | /* enable msix_other interrupt */ |
| 494 | adapter->eims_other = 1 << vector; |
| 495 | tmp = (vector++ | E1000_IVAR_VALID) << 8; |
| 496 | |
| 497 | wr32(E1000_IVAR_MISC, tmp); |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 498 | break; |
| 499 | default: |
| 500 | /* do nothing, since nothing else supports MSI-X */ |
| 501 | break; |
| 502 | } /* switch (hw->mac.type) */ |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 503 | |
| 504 | adapter->eims_enable_mask |= adapter->eims_other; |
| 505 | |
| 506 | for (i = 0; i < adapter->num_q_vectors; i++) { |
| 507 | struct igb_q_vector *q_vector = adapter->q_vector[i]; |
| 508 | igb_assign_vector(q_vector, vector++); |
| 509 | adapter->eims_enable_mask |= q_vector->eims_value; |
| 510 | } |
| 511 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 512 | wrfl(); |
| 513 | } |
| 514 | |
| 515 | /** |
| 516 | * igb_request_msix - Initialize MSI-X interrupts |
| 517 | * |
| 518 | * igb_request_msix allocates MSI-X vectors and requests interrupts from the |
| 519 | * kernel. |
| 520 | **/ |
| 521 | static int igb_request_msix(struct igb_adapter *adapter) |
| 522 | { |
| 523 | struct net_device *netdev = adapter->netdev; |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 524 | struct e1000_hw *hw = &adapter->hw; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 525 | int i, err = 0, vector = 0; |
| 526 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 527 | err = request_irq(adapter->msix_entries[vector].vector, |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 528 | &igb_msix_other, 0, netdev->name, adapter); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 529 | if (err) |
| 530 | goto out; |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 531 | vector++; |
| 532 | |
| 533 | for (i = 0; i < adapter->num_q_vectors; i++) { |
| 534 | struct igb_q_vector *q_vector = adapter->q_vector[i]; |
| 535 | |
| 536 | q_vector->itr_register = hw->hw_addr + E1000_EITR(vector); |
| 537 | |
| 538 | if (q_vector->rx_ring && q_vector->tx_ring) |
| 539 | sprintf(q_vector->name, "%s-TxRx-%u", netdev->name, |
| 540 | q_vector->rx_ring->queue_index); |
| 541 | else if (q_vector->tx_ring) |
| 542 | sprintf(q_vector->name, "%s-tx-%u", netdev->name, |
| 543 | q_vector->tx_ring->queue_index); |
| 544 | else if (q_vector->rx_ring) |
| 545 | sprintf(q_vector->name, "%s-rx-%u", netdev->name, |
| 546 | q_vector->rx_ring->queue_index); |
| 547 | else |
| 548 | sprintf(q_vector->name, "%s-unused", netdev->name); |
| 549 | |
| 550 | err = request_irq(adapter->msix_entries[vector].vector, |
| 551 | &igb_msix_ring, 0, q_vector->name, |
| 552 | q_vector); |
| 553 | if (err) |
| 554 | goto out; |
| 555 | vector++; |
| 556 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 557 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 558 | igb_configure_msix(adapter); |
| 559 | return 0; |
| 560 | out: |
| 561 | return err; |
| 562 | } |
| 563 | |
| 564 | static void igb_reset_interrupt_capability(struct igb_adapter *adapter) |
| 565 | { |
| 566 | if (adapter->msix_entries) { |
| 567 | pci_disable_msix(adapter->pdev); |
| 568 | kfree(adapter->msix_entries); |
| 569 | adapter->msix_entries = NULL; |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 570 | } else if (adapter->flags & IGB_FLAG_HAS_MSI) { |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 571 | pci_disable_msi(adapter->pdev); |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 572 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 573 | } |
| 574 | |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 575 | /** |
| 576 | * igb_free_q_vectors - Free memory allocated for interrupt vectors |
| 577 | * @adapter: board private structure to initialize |
| 578 | * |
| 579 | * This function frees the memory allocated to the q_vectors. In addition if |
| 580 | * NAPI is enabled it will delete any references to the NAPI struct prior |
| 581 | * to freeing the q_vector. |
| 582 | **/ |
| 583 | static void igb_free_q_vectors(struct igb_adapter *adapter) |
| 584 | { |
| 585 | int v_idx; |
| 586 | |
| 587 | for (v_idx = 0; v_idx < adapter->num_q_vectors; v_idx++) { |
| 588 | struct igb_q_vector *q_vector = adapter->q_vector[v_idx]; |
| 589 | adapter->q_vector[v_idx] = NULL; |
| 590 | netif_napi_del(&q_vector->napi); |
| 591 | kfree(q_vector); |
| 592 | } |
| 593 | adapter->num_q_vectors = 0; |
| 594 | } |
| 595 | |
| 596 | /** |
| 597 | * igb_clear_interrupt_scheme - reset the device to a state of no interrupts |
| 598 | * |
| 599 | * This function resets the device so that it has 0 rx queues, tx queues, and |
| 600 | * MSI-X interrupts allocated. |
| 601 | */ |
| 602 | static void igb_clear_interrupt_scheme(struct igb_adapter *adapter) |
| 603 | { |
| 604 | igb_free_queues(adapter); |
| 605 | igb_free_q_vectors(adapter); |
| 606 | igb_reset_interrupt_capability(adapter); |
| 607 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 608 | |
| 609 | /** |
| 610 | * igb_set_interrupt_capability - set MSI or MSI-X if supported |
| 611 | * |
| 612 | * Attempt to configure interrupts using the best available |
| 613 | * capabilities of the hardware and kernel. |
| 614 | **/ |
| 615 | static void igb_set_interrupt_capability(struct igb_adapter *adapter) |
| 616 | { |
| 617 | int err; |
| 618 | int numvecs, i; |
| 619 | |
Alexander Duyck | 83b7180 | 2009-02-06 23:15:45 +0000 | [diff] [blame] | 620 | /* Number of supported queues. */ |
Alexander Duyck | 83b7180 | 2009-02-06 23:15:45 +0000 | [diff] [blame] | 621 | adapter->num_rx_queues = min_t(u32, IGB_MAX_RX_QUEUES, num_online_cpus()); |
| 622 | adapter->num_tx_queues = min_t(u32, IGB_MAX_TX_QUEUES, num_online_cpus()); |
| 623 | |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 624 | /* start with one vector for every rx queue */ |
| 625 | numvecs = adapter->num_rx_queues; |
| 626 | |
| 627 | /* if tx handler is seperate add 1 for every tx queue */ |
| 628 | numvecs += adapter->num_tx_queues; |
| 629 | |
| 630 | /* store the number of vectors reserved for queues */ |
| 631 | adapter->num_q_vectors = numvecs; |
| 632 | |
| 633 | /* add 1 vector for link status interrupts */ |
| 634 | numvecs++; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 635 | adapter->msix_entries = kcalloc(numvecs, sizeof(struct msix_entry), |
| 636 | GFP_KERNEL); |
| 637 | if (!adapter->msix_entries) |
| 638 | goto msi_only; |
| 639 | |
| 640 | for (i = 0; i < numvecs; i++) |
| 641 | adapter->msix_entries[i].entry = i; |
| 642 | |
| 643 | err = pci_enable_msix(adapter->pdev, |
| 644 | adapter->msix_entries, |
| 645 | numvecs); |
| 646 | if (err == 0) |
Alexander Duyck | 34a20e8 | 2008-08-26 04:25:13 -0700 | [diff] [blame] | 647 | goto out; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 648 | |
| 649 | igb_reset_interrupt_capability(adapter); |
| 650 | |
| 651 | /* If we can't do MSI-X, try MSI */ |
| 652 | msi_only: |
Alexander Duyck | 2a3abf6 | 2009-04-07 14:37:52 +0000 | [diff] [blame] | 653 | #ifdef CONFIG_PCI_IOV |
| 654 | /* disable SR-IOV for non MSI-X configurations */ |
| 655 | if (adapter->vf_data) { |
| 656 | struct e1000_hw *hw = &adapter->hw; |
| 657 | /* disable iov and allow time for transactions to clear */ |
| 658 | pci_disable_sriov(adapter->pdev); |
| 659 | msleep(500); |
| 660 | |
| 661 | kfree(adapter->vf_data); |
| 662 | adapter->vf_data = NULL; |
| 663 | wr32(E1000_IOVCTL, E1000_IOVCTL_REUSE_VFQ); |
| 664 | msleep(100); |
| 665 | dev_info(&adapter->pdev->dev, "IOV Disabled\n"); |
| 666 | } |
| 667 | #endif |
Alexander Duyck | 4fc82ad | 2009-10-27 23:45:42 +0000 | [diff] [blame] | 668 | adapter->vfs_allocated_count = 0; |
| 669 | adapter->flags |= IGB_FLAG_QUEUE_PAIRS; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 670 | adapter->num_rx_queues = 1; |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 671 | adapter->num_tx_queues = 1; |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 672 | adapter->num_q_vectors = 1; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 673 | if (!pci_enable_msi(adapter->pdev)) |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 674 | adapter->flags |= IGB_FLAG_HAS_MSI; |
Alexander Duyck | 34a20e8 | 2008-08-26 04:25:13 -0700 | [diff] [blame] | 675 | out: |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 676 | /* Notify the stack of the (possibly) reduced Tx Queue count. */ |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 677 | adapter->netdev->real_num_tx_queues = adapter->num_tx_queues; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 678 | return; |
| 679 | } |
| 680 | |
| 681 | /** |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 682 | * igb_alloc_q_vectors - Allocate memory for interrupt vectors |
| 683 | * @adapter: board private structure to initialize |
| 684 | * |
| 685 | * We allocate one q_vector per queue interrupt. If allocation fails we |
| 686 | * return -ENOMEM. |
| 687 | **/ |
| 688 | static int igb_alloc_q_vectors(struct igb_adapter *adapter) |
| 689 | { |
| 690 | struct igb_q_vector *q_vector; |
| 691 | struct e1000_hw *hw = &adapter->hw; |
| 692 | int v_idx; |
| 693 | |
| 694 | for (v_idx = 0; v_idx < adapter->num_q_vectors; v_idx++) { |
| 695 | q_vector = kzalloc(sizeof(struct igb_q_vector), GFP_KERNEL); |
| 696 | if (!q_vector) |
| 697 | goto err_out; |
| 698 | q_vector->adapter = adapter; |
| 699 | q_vector->itr_shift = (hw->mac.type == e1000_82575) ? 16 : 0; |
| 700 | q_vector->itr_register = hw->hw_addr + E1000_EITR(0); |
| 701 | q_vector->itr_val = IGB_START_ITR; |
| 702 | q_vector->set_itr = 1; |
| 703 | netif_napi_add(adapter->netdev, &q_vector->napi, igb_poll, 64); |
| 704 | adapter->q_vector[v_idx] = q_vector; |
| 705 | } |
| 706 | return 0; |
| 707 | |
| 708 | err_out: |
| 709 | while (v_idx) { |
| 710 | v_idx--; |
| 711 | q_vector = adapter->q_vector[v_idx]; |
| 712 | netif_napi_del(&q_vector->napi); |
| 713 | kfree(q_vector); |
| 714 | adapter->q_vector[v_idx] = NULL; |
| 715 | } |
| 716 | return -ENOMEM; |
| 717 | } |
| 718 | |
| 719 | static void igb_map_rx_ring_to_vector(struct igb_adapter *adapter, |
| 720 | int ring_idx, int v_idx) |
| 721 | { |
| 722 | struct igb_q_vector *q_vector; |
| 723 | |
| 724 | q_vector = adapter->q_vector[v_idx]; |
| 725 | q_vector->rx_ring = &adapter->rx_ring[ring_idx]; |
| 726 | q_vector->rx_ring->q_vector = q_vector; |
Alexander Duyck | 4fc82ad | 2009-10-27 23:45:42 +0000 | [diff] [blame] | 727 | q_vector->itr_val = adapter->rx_itr_setting; |
| 728 | if (q_vector->itr_val && q_vector->itr_val <= 3) |
| 729 | q_vector->itr_val = IGB_START_ITR; |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 730 | } |
| 731 | |
| 732 | static void igb_map_tx_ring_to_vector(struct igb_adapter *adapter, |
| 733 | int ring_idx, int v_idx) |
| 734 | { |
| 735 | struct igb_q_vector *q_vector; |
| 736 | |
| 737 | q_vector = adapter->q_vector[v_idx]; |
| 738 | q_vector->tx_ring = &adapter->tx_ring[ring_idx]; |
| 739 | q_vector->tx_ring->q_vector = q_vector; |
Alexander Duyck | 4fc82ad | 2009-10-27 23:45:42 +0000 | [diff] [blame] | 740 | q_vector->itr_val = adapter->tx_itr_setting; |
| 741 | if (q_vector->itr_val && q_vector->itr_val <= 3) |
| 742 | q_vector->itr_val = IGB_START_ITR; |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 743 | } |
| 744 | |
| 745 | /** |
| 746 | * igb_map_ring_to_vector - maps allocated queues to vectors |
| 747 | * |
| 748 | * This function maps the recently allocated queues to vectors. |
| 749 | **/ |
| 750 | static int igb_map_ring_to_vector(struct igb_adapter *adapter) |
| 751 | { |
| 752 | int i; |
| 753 | int v_idx = 0; |
| 754 | |
| 755 | if ((adapter->num_q_vectors < adapter->num_rx_queues) || |
| 756 | (adapter->num_q_vectors < adapter->num_tx_queues)) |
| 757 | return -ENOMEM; |
| 758 | |
| 759 | if (adapter->num_q_vectors >= |
| 760 | (adapter->num_rx_queues + adapter->num_tx_queues)) { |
| 761 | for (i = 0; i < adapter->num_rx_queues; i++) |
| 762 | igb_map_rx_ring_to_vector(adapter, i, v_idx++); |
| 763 | for (i = 0; i < adapter->num_tx_queues; i++) |
| 764 | igb_map_tx_ring_to_vector(adapter, i, v_idx++); |
| 765 | } else { |
| 766 | for (i = 0; i < adapter->num_rx_queues; i++) { |
| 767 | if (i < adapter->num_tx_queues) |
| 768 | igb_map_tx_ring_to_vector(adapter, i, v_idx); |
| 769 | igb_map_rx_ring_to_vector(adapter, i, v_idx++); |
| 770 | } |
| 771 | for (; i < adapter->num_tx_queues; i++) |
| 772 | igb_map_tx_ring_to_vector(adapter, i, v_idx++); |
| 773 | } |
| 774 | return 0; |
| 775 | } |
| 776 | |
| 777 | /** |
| 778 | * igb_init_interrupt_scheme - initialize interrupts, allocate queues/vectors |
| 779 | * |
| 780 | * This function initializes the interrupts and allocates all of the queues. |
| 781 | **/ |
| 782 | static int igb_init_interrupt_scheme(struct igb_adapter *adapter) |
| 783 | { |
| 784 | struct pci_dev *pdev = adapter->pdev; |
| 785 | int err; |
| 786 | |
| 787 | igb_set_interrupt_capability(adapter); |
| 788 | |
| 789 | err = igb_alloc_q_vectors(adapter); |
| 790 | if (err) { |
| 791 | dev_err(&pdev->dev, "Unable to allocate memory for vectors\n"); |
| 792 | goto err_alloc_q_vectors; |
| 793 | } |
| 794 | |
| 795 | err = igb_alloc_queues(adapter); |
| 796 | if (err) { |
| 797 | dev_err(&pdev->dev, "Unable to allocate memory for queues\n"); |
| 798 | goto err_alloc_queues; |
| 799 | } |
| 800 | |
| 801 | err = igb_map_ring_to_vector(adapter); |
| 802 | if (err) { |
| 803 | dev_err(&pdev->dev, "Invalid q_vector to ring mapping\n"); |
| 804 | goto err_map_queues; |
| 805 | } |
| 806 | |
| 807 | |
| 808 | return 0; |
| 809 | err_map_queues: |
| 810 | igb_free_queues(adapter); |
| 811 | err_alloc_queues: |
| 812 | igb_free_q_vectors(adapter); |
| 813 | err_alloc_q_vectors: |
| 814 | igb_reset_interrupt_capability(adapter); |
| 815 | return err; |
| 816 | } |
| 817 | |
| 818 | /** |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 819 | * igb_request_irq - initialize interrupts |
| 820 | * |
| 821 | * Attempts to configure interrupts using the best available |
| 822 | * capabilities of the hardware and kernel. |
| 823 | **/ |
| 824 | static int igb_request_irq(struct igb_adapter *adapter) |
| 825 | { |
| 826 | struct net_device *netdev = adapter->netdev; |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 827 | struct pci_dev *pdev = adapter->pdev; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 828 | struct e1000_hw *hw = &adapter->hw; |
| 829 | int err = 0; |
| 830 | |
| 831 | if (adapter->msix_entries) { |
| 832 | err = igb_request_msix(adapter); |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 833 | if (!err) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 834 | goto request_done; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 835 | /* fall back to MSI */ |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 836 | igb_clear_interrupt_scheme(adapter); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 837 | if (!pci_enable_msi(adapter->pdev)) |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 838 | adapter->flags |= IGB_FLAG_HAS_MSI; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 839 | igb_free_all_tx_resources(adapter); |
| 840 | igb_free_all_rx_resources(adapter); |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 841 | adapter->num_tx_queues = 1; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 842 | adapter->num_rx_queues = 1; |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 843 | adapter->num_q_vectors = 1; |
| 844 | err = igb_alloc_q_vectors(adapter); |
| 845 | if (err) { |
| 846 | dev_err(&pdev->dev, |
| 847 | "Unable to allocate memory for vectors\n"); |
| 848 | goto request_done; |
| 849 | } |
| 850 | err = igb_alloc_queues(adapter); |
| 851 | if (err) { |
| 852 | dev_err(&pdev->dev, |
| 853 | "Unable to allocate memory for queues\n"); |
| 854 | igb_free_q_vectors(adapter); |
| 855 | goto request_done; |
| 856 | } |
| 857 | igb_setup_all_tx_resources(adapter); |
| 858 | igb_setup_all_rx_resources(adapter); |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 859 | } else { |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 860 | switch (hw->mac.type) { |
| 861 | case e1000_82575: |
| 862 | wr32(E1000_MSIXBM(0), |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 863 | (E1000_EICR_RX_QUEUE0 | |
| 864 | E1000_EICR_TX_QUEUE0 | |
| 865 | E1000_EIMS_OTHER)); |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 866 | break; |
| 867 | case e1000_82576: |
| 868 | wr32(E1000_IVAR0, E1000_IVAR_VALID); |
| 869 | break; |
| 870 | default: |
| 871 | break; |
| 872 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 873 | } |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 874 | |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 875 | if (adapter->flags & IGB_FLAG_HAS_MSI) { |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 876 | err = request_irq(adapter->pdev->irq, &igb_intr_msi, 0, |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 877 | netdev->name, adapter); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 878 | if (!err) |
| 879 | goto request_done; |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 880 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 881 | /* fall back to legacy interrupts */ |
| 882 | igb_reset_interrupt_capability(adapter); |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 883 | adapter->flags &= ~IGB_FLAG_HAS_MSI; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 884 | } |
| 885 | |
| 886 | err = request_irq(adapter->pdev->irq, &igb_intr, IRQF_SHARED, |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 887 | netdev->name, adapter); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 888 | |
Andy Gospodarek | 6cb5e57 | 2008-02-15 14:05:25 -0800 | [diff] [blame] | 889 | if (err) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 890 | dev_err(&adapter->pdev->dev, "Error %d getting interrupt\n", |
| 891 | err); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 892 | |
| 893 | request_done: |
| 894 | return err; |
| 895 | } |
| 896 | |
| 897 | static void igb_free_irq(struct igb_adapter *adapter) |
| 898 | { |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 899 | if (adapter->msix_entries) { |
| 900 | int vector = 0, i; |
| 901 | |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 902 | free_irq(adapter->msix_entries[vector++].vector, adapter); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 903 | |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 904 | for (i = 0; i < adapter->num_q_vectors; i++) { |
| 905 | struct igb_q_vector *q_vector = adapter->q_vector[i]; |
| 906 | free_irq(adapter->msix_entries[vector++].vector, |
| 907 | q_vector); |
| 908 | } |
| 909 | } else { |
| 910 | free_irq(adapter->pdev->irq, adapter); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 911 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 912 | } |
| 913 | |
| 914 | /** |
| 915 | * igb_irq_disable - Mask off interrupt generation on the NIC |
| 916 | * @adapter: board private structure |
| 917 | **/ |
| 918 | static void igb_irq_disable(struct igb_adapter *adapter) |
| 919 | { |
| 920 | struct e1000_hw *hw = &adapter->hw; |
| 921 | |
Alexander Duyck | 25568a5 | 2009-10-27 23:49:59 +0000 | [diff] [blame] | 922 | /* |
| 923 | * we need to be careful when disabling interrupts. The VFs are also |
| 924 | * mapped into these registers and so clearing the bits can cause |
| 925 | * issues on the VF drivers so we only need to clear what we set |
| 926 | */ |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 927 | if (adapter->msix_entries) { |
Alexander Duyck | 2dfd121 | 2009-09-03 14:49:15 +0000 | [diff] [blame] | 928 | u32 regval = rd32(E1000_EIAM); |
| 929 | wr32(E1000_EIAM, regval & ~adapter->eims_enable_mask); |
| 930 | wr32(E1000_EIMC, adapter->eims_enable_mask); |
| 931 | regval = rd32(E1000_EIAC); |
| 932 | wr32(E1000_EIAC, regval & ~adapter->eims_enable_mask); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 933 | } |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 934 | |
| 935 | wr32(E1000_IAM, 0); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 936 | wr32(E1000_IMC, ~0); |
| 937 | wrfl(); |
| 938 | synchronize_irq(adapter->pdev->irq); |
| 939 | } |
| 940 | |
| 941 | /** |
| 942 | * igb_irq_enable - Enable default interrupt generation settings |
| 943 | * @adapter: board private structure |
| 944 | **/ |
| 945 | static void igb_irq_enable(struct igb_adapter *adapter) |
| 946 | { |
| 947 | struct e1000_hw *hw = &adapter->hw; |
| 948 | |
| 949 | if (adapter->msix_entries) { |
Alexander Duyck | 25568a5 | 2009-10-27 23:49:59 +0000 | [diff] [blame] | 950 | u32 ims = E1000_IMS_LSC | E1000_IMS_DOUTSYNC; |
Alexander Duyck | 2dfd121 | 2009-09-03 14:49:15 +0000 | [diff] [blame] | 951 | u32 regval = rd32(E1000_EIAC); |
| 952 | wr32(E1000_EIAC, regval | adapter->eims_enable_mask); |
| 953 | regval = rd32(E1000_EIAM); |
| 954 | wr32(E1000_EIAM, regval | adapter->eims_enable_mask); |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 955 | wr32(E1000_EIMS, adapter->eims_enable_mask); |
Alexander Duyck | 25568a5 | 2009-10-27 23:49:59 +0000 | [diff] [blame] | 956 | if (adapter->vfs_allocated_count) { |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 957 | wr32(E1000_MBVFIMR, 0xFF); |
Alexander Duyck | 25568a5 | 2009-10-27 23:49:59 +0000 | [diff] [blame] | 958 | ims |= E1000_IMS_VMMB; |
| 959 | } |
| 960 | wr32(E1000_IMS, ims); |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 961 | } else { |
| 962 | wr32(E1000_IMS, IMS_ENABLE_MASK); |
| 963 | wr32(E1000_IAM, IMS_ENABLE_MASK); |
| 964 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 965 | } |
| 966 | |
| 967 | static void igb_update_mng_vlan(struct igb_adapter *adapter) |
| 968 | { |
Alexander Duyck | 5146623 | 2009-10-27 23:47:35 +0000 | [diff] [blame] | 969 | struct e1000_hw *hw = &adapter->hw; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 970 | u16 vid = adapter->hw.mng_cookie.vlan_id; |
| 971 | u16 old_vid = adapter->mng_vlan_id; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 972 | |
Alexander Duyck | 5146623 | 2009-10-27 23:47:35 +0000 | [diff] [blame] | 973 | if (hw->mng_cookie.status & E1000_MNG_DHCP_COOKIE_STATUS_VLAN) { |
| 974 | /* add VID to filter table */ |
| 975 | igb_vfta_set(hw, vid, true); |
| 976 | adapter->mng_vlan_id = vid; |
| 977 | } else { |
| 978 | adapter->mng_vlan_id = IGB_MNG_VLAN_NONE; |
| 979 | } |
| 980 | |
| 981 | if ((old_vid != (u16)IGB_MNG_VLAN_NONE) && |
| 982 | (vid != old_vid) && |
| 983 | !vlan_group_get_device(adapter->vlgrp, old_vid)) { |
| 984 | /* remove VID from filter table */ |
| 985 | igb_vfta_set(hw, old_vid, false); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 986 | } |
| 987 | } |
| 988 | |
| 989 | /** |
| 990 | * igb_release_hw_control - release control of the h/w to f/w |
| 991 | * @adapter: address of board private structure |
| 992 | * |
| 993 | * igb_release_hw_control resets CTRL_EXT:DRV_LOAD bit. |
| 994 | * For ASF and Pass Through versions of f/w this means that the |
| 995 | * driver is no longer loaded. |
| 996 | * |
| 997 | **/ |
| 998 | static void igb_release_hw_control(struct igb_adapter *adapter) |
| 999 | { |
| 1000 | struct e1000_hw *hw = &adapter->hw; |
| 1001 | u32 ctrl_ext; |
| 1002 | |
| 1003 | /* Let firmware take over control of h/w */ |
| 1004 | ctrl_ext = rd32(E1000_CTRL_EXT); |
| 1005 | wr32(E1000_CTRL_EXT, |
| 1006 | ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD); |
| 1007 | } |
| 1008 | |
| 1009 | |
| 1010 | /** |
| 1011 | * igb_get_hw_control - get control of the h/w from f/w |
| 1012 | * @adapter: address of board private structure |
| 1013 | * |
| 1014 | * igb_get_hw_control sets CTRL_EXT:DRV_LOAD bit. |
| 1015 | * For ASF and Pass Through versions of f/w this means that |
| 1016 | * the driver is loaded. |
| 1017 | * |
| 1018 | **/ |
| 1019 | static void igb_get_hw_control(struct igb_adapter *adapter) |
| 1020 | { |
| 1021 | struct e1000_hw *hw = &adapter->hw; |
| 1022 | u32 ctrl_ext; |
| 1023 | |
| 1024 | /* Let firmware know the driver has taken over */ |
| 1025 | ctrl_ext = rd32(E1000_CTRL_EXT); |
| 1026 | wr32(E1000_CTRL_EXT, |
| 1027 | ctrl_ext | E1000_CTRL_EXT_DRV_LOAD); |
| 1028 | } |
| 1029 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1030 | /** |
| 1031 | * igb_configure - configure the hardware for RX and TX |
| 1032 | * @adapter: private board structure |
| 1033 | **/ |
| 1034 | static void igb_configure(struct igb_adapter *adapter) |
| 1035 | { |
| 1036 | struct net_device *netdev = adapter->netdev; |
| 1037 | int i; |
| 1038 | |
| 1039 | igb_get_hw_control(adapter); |
Alexander Duyck | ff41f8d | 2009-09-03 14:48:56 +0000 | [diff] [blame] | 1040 | igb_set_rx_mode(netdev); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1041 | |
| 1042 | igb_restore_vlan(adapter); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1043 | |
Alexander Duyck | 85b430b | 2009-10-27 15:50:29 +0000 | [diff] [blame] | 1044 | igb_setup_tctl(adapter); |
Alexander Duyck | 06cf266 | 2009-10-27 15:53:25 +0000 | [diff] [blame] | 1045 | igb_setup_mrqc(adapter); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1046 | igb_setup_rctl(adapter); |
Alexander Duyck | 85b430b | 2009-10-27 15:50:29 +0000 | [diff] [blame] | 1047 | |
| 1048 | igb_configure_tx(adapter); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1049 | igb_configure_rx(adapter); |
Alexander Duyck | 662d720 | 2008-06-27 11:00:29 -0700 | [diff] [blame] | 1050 | |
| 1051 | igb_rx_fifo_flush_82575(&adapter->hw); |
| 1052 | |
Alexander Duyck | c493ea4 | 2009-03-20 00:16:50 +0000 | [diff] [blame] | 1053 | /* call igb_desc_unused which always leaves |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1054 | * at least 1 descriptor unused to make sure |
| 1055 | * next_to_use != next_to_clean */ |
| 1056 | for (i = 0; i < adapter->num_rx_queues; i++) { |
| 1057 | struct igb_ring *ring = &adapter->rx_ring[i]; |
Alexander Duyck | c493ea4 | 2009-03-20 00:16:50 +0000 | [diff] [blame] | 1058 | igb_alloc_rx_buffers_adv(ring, igb_desc_unused(ring)); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1059 | } |
| 1060 | |
| 1061 | |
| 1062 | adapter->tx_queue_len = netdev->tx_queue_len; |
| 1063 | } |
| 1064 | |
| 1065 | |
| 1066 | /** |
| 1067 | * igb_up - Open the interface and prepare it to handle traffic |
| 1068 | * @adapter: board private structure |
| 1069 | **/ |
| 1070 | |
| 1071 | int igb_up(struct igb_adapter *adapter) |
| 1072 | { |
| 1073 | struct e1000_hw *hw = &adapter->hw; |
| 1074 | int i; |
| 1075 | |
| 1076 | /* hardware has been reset, we need to reload some things */ |
| 1077 | igb_configure(adapter); |
| 1078 | |
| 1079 | clear_bit(__IGB_DOWN, &adapter->state); |
| 1080 | |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 1081 | for (i = 0; i < adapter->num_q_vectors; i++) { |
| 1082 | struct igb_q_vector *q_vector = adapter->q_vector[i]; |
| 1083 | napi_enable(&q_vector->napi); |
| 1084 | } |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 1085 | if (adapter->msix_entries) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1086 | igb_configure_msix(adapter); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1087 | |
| 1088 | /* Clear any pending interrupts. */ |
| 1089 | rd32(E1000_ICR); |
| 1090 | igb_irq_enable(adapter); |
| 1091 | |
Alexander Duyck | d496030 | 2009-10-27 15:53:45 +0000 | [diff] [blame] | 1092 | /* notify VFs that reset has been completed */ |
| 1093 | if (adapter->vfs_allocated_count) { |
| 1094 | u32 reg_data = rd32(E1000_CTRL_EXT); |
| 1095 | reg_data |= E1000_CTRL_EXT_PFRSTD; |
| 1096 | wr32(E1000_CTRL_EXT, reg_data); |
| 1097 | } |
| 1098 | |
Jesse Brandeburg | 4cb9be7 | 2009-04-21 18:42:05 +0000 | [diff] [blame] | 1099 | netif_tx_start_all_queues(adapter->netdev); |
| 1100 | |
Alexander Duyck | 25568a5 | 2009-10-27 23:49:59 +0000 | [diff] [blame] | 1101 | /* start the watchdog. */ |
| 1102 | hw->mac.get_link_status = 1; |
| 1103 | schedule_work(&adapter->watchdog_task); |
| 1104 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1105 | return 0; |
| 1106 | } |
| 1107 | |
| 1108 | void igb_down(struct igb_adapter *adapter) |
| 1109 | { |
| 1110 | struct e1000_hw *hw = &adapter->hw; |
| 1111 | struct net_device *netdev = adapter->netdev; |
| 1112 | u32 tctl, rctl; |
| 1113 | int i; |
| 1114 | |
| 1115 | /* signal that we're down so the interrupt handler does not |
| 1116 | * reschedule our watchdog timer */ |
| 1117 | set_bit(__IGB_DOWN, &adapter->state); |
| 1118 | |
| 1119 | /* disable receives in the hardware */ |
| 1120 | rctl = rd32(E1000_RCTL); |
| 1121 | wr32(E1000_RCTL, rctl & ~E1000_RCTL_EN); |
| 1122 | /* flush and sleep below */ |
| 1123 | |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 1124 | netif_tx_stop_all_queues(netdev); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1125 | |
| 1126 | /* disable transmits in the hardware */ |
| 1127 | tctl = rd32(E1000_TCTL); |
| 1128 | tctl &= ~E1000_TCTL_EN; |
| 1129 | wr32(E1000_TCTL, tctl); |
| 1130 | /* flush both disables and wait for them to finish */ |
| 1131 | wrfl(); |
| 1132 | msleep(10); |
| 1133 | |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 1134 | for (i = 0; i < adapter->num_q_vectors; i++) { |
| 1135 | struct igb_q_vector *q_vector = adapter->q_vector[i]; |
| 1136 | napi_disable(&q_vector->napi); |
| 1137 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1138 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1139 | igb_irq_disable(adapter); |
| 1140 | |
| 1141 | del_timer_sync(&adapter->watchdog_timer); |
| 1142 | del_timer_sync(&adapter->phy_info_timer); |
| 1143 | |
| 1144 | netdev->tx_queue_len = adapter->tx_queue_len; |
| 1145 | netif_carrier_off(netdev); |
Alexander Duyck | 04fe635 | 2009-02-06 23:22:32 +0000 | [diff] [blame] | 1146 | |
| 1147 | /* record the stats before reset*/ |
| 1148 | igb_update_stats(adapter); |
| 1149 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1150 | adapter->link_speed = 0; |
| 1151 | adapter->link_duplex = 0; |
| 1152 | |
Jeff Kirsher | 3023682 | 2008-06-24 17:01:15 -0700 | [diff] [blame] | 1153 | if (!pci_channel_offline(adapter->pdev)) |
| 1154 | igb_reset(adapter); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1155 | igb_clean_all_tx_rings(adapter); |
| 1156 | igb_clean_all_rx_rings(adapter); |
Alexander Duyck | 7e0e99e | 2009-05-21 13:06:56 +0000 | [diff] [blame] | 1157 | #ifdef CONFIG_IGB_DCA |
| 1158 | |
| 1159 | /* since we reset the hardware DCA settings were cleared */ |
| 1160 | igb_setup_dca(adapter); |
| 1161 | #endif |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1162 | } |
| 1163 | |
| 1164 | void igb_reinit_locked(struct igb_adapter *adapter) |
| 1165 | { |
| 1166 | WARN_ON(in_interrupt()); |
| 1167 | while (test_and_set_bit(__IGB_RESETTING, &adapter->state)) |
| 1168 | msleep(1); |
| 1169 | igb_down(adapter); |
| 1170 | igb_up(adapter); |
| 1171 | clear_bit(__IGB_RESETTING, &adapter->state); |
| 1172 | } |
| 1173 | |
| 1174 | void igb_reset(struct igb_adapter *adapter) |
| 1175 | { |
| 1176 | struct e1000_hw *hw = &adapter->hw; |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 1177 | struct e1000_mac_info *mac = &hw->mac; |
| 1178 | struct e1000_fc_info *fc = &hw->fc; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1179 | u32 pba = 0, tx_space, min_tx_space, min_rx_space; |
| 1180 | u16 hwm; |
| 1181 | |
| 1182 | /* Repartition Pba for greater than 9k mtu |
| 1183 | * To take effect CTRL.RST is required. |
| 1184 | */ |
Alexander Duyck | fa4dfae | 2009-02-06 23:21:31 +0000 | [diff] [blame] | 1185 | switch (mac->type) { |
| 1186 | case e1000_82576: |
Alexander Duyck | d249be5 | 2009-10-27 23:46:38 +0000 | [diff] [blame] | 1187 | pba = rd32(E1000_RXPBS); |
| 1188 | pba &= E1000_RXPBS_SIZE_MASK_82576; |
Alexander Duyck | fa4dfae | 2009-02-06 23:21:31 +0000 | [diff] [blame] | 1189 | break; |
| 1190 | case e1000_82575: |
| 1191 | default: |
| 1192 | pba = E1000_PBA_34K; |
| 1193 | break; |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 1194 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1195 | |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 1196 | if ((adapter->max_frame_size > ETH_FRAME_LEN + ETH_FCS_LEN) && |
| 1197 | (mac->type < e1000_82576)) { |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1198 | /* adjust PBA for jumbo frames */ |
| 1199 | wr32(E1000_PBA, pba); |
| 1200 | |
| 1201 | /* To maintain wire speed transmits, the Tx FIFO should be |
| 1202 | * large enough to accommodate two full transmit packets, |
| 1203 | * rounded up to the next 1KB and expressed in KB. Likewise, |
| 1204 | * the Rx FIFO should be large enough to accommodate at least |
| 1205 | * one full receive packet and is similarly rounded up and |
| 1206 | * expressed in KB. */ |
| 1207 | pba = rd32(E1000_PBA); |
| 1208 | /* upper 16 bits has Tx packet buffer allocation size in KB */ |
| 1209 | tx_space = pba >> 16; |
| 1210 | /* lower 16 bits has Rx packet buffer allocation size in KB */ |
| 1211 | pba &= 0xffff; |
| 1212 | /* the tx fifo also stores 16 bytes of information about the tx |
| 1213 | * but don't include ethernet FCS because hardware appends it */ |
| 1214 | min_tx_space = (adapter->max_frame_size + |
Alexander Duyck | 85e8d00 | 2009-02-16 00:00:20 -0800 | [diff] [blame] | 1215 | sizeof(union e1000_adv_tx_desc) - |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1216 | ETH_FCS_LEN) * 2; |
| 1217 | min_tx_space = ALIGN(min_tx_space, 1024); |
| 1218 | min_tx_space >>= 10; |
| 1219 | /* software strips receive CRC, so leave room for it */ |
| 1220 | min_rx_space = adapter->max_frame_size; |
| 1221 | min_rx_space = ALIGN(min_rx_space, 1024); |
| 1222 | min_rx_space >>= 10; |
| 1223 | |
| 1224 | /* If current Tx allocation is less than the min Tx FIFO size, |
| 1225 | * and the min Tx FIFO size is less than the current Rx FIFO |
| 1226 | * allocation, take space away from current Rx allocation */ |
| 1227 | if (tx_space < min_tx_space && |
| 1228 | ((min_tx_space - tx_space) < pba)) { |
| 1229 | pba = pba - (min_tx_space - tx_space); |
| 1230 | |
| 1231 | /* if short on rx space, rx wins and must trump tx |
| 1232 | * adjustment */ |
| 1233 | if (pba < min_rx_space) |
| 1234 | pba = min_rx_space; |
| 1235 | } |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 1236 | wr32(E1000_PBA, pba); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1237 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1238 | |
| 1239 | /* flow control settings */ |
| 1240 | /* The high water mark must be low enough to fit one full frame |
| 1241 | * (or the size used for early receive) above it in the Rx FIFO. |
| 1242 | * Set it to the lower of: |
| 1243 | * - 90% of the Rx FIFO size, or |
| 1244 | * - the full Rx FIFO size minus one full frame */ |
| 1245 | hwm = min(((pba << 10) * 9 / 10), |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 1246 | ((pba << 10) - 2 * adapter->max_frame_size)); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1247 | |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 1248 | if (mac->type < e1000_82576) { |
| 1249 | fc->high_water = hwm & 0xFFF8; /* 8-byte granularity */ |
| 1250 | fc->low_water = fc->high_water - 8; |
| 1251 | } else { |
| 1252 | fc->high_water = hwm & 0xFFF0; /* 16-byte granularity */ |
| 1253 | fc->low_water = fc->high_water - 16; |
| 1254 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1255 | fc->pause_time = 0xFFFF; |
| 1256 | fc->send_xon = 1; |
Alexander Duyck | 0cce119 | 2009-07-23 18:10:24 +0000 | [diff] [blame] | 1257 | fc->current_mode = fc->requested_mode; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1258 | |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 1259 | /* disable receive for all VFs and wait one second */ |
| 1260 | if (adapter->vfs_allocated_count) { |
| 1261 | int i; |
| 1262 | for (i = 0 ; i < adapter->vfs_allocated_count; i++) |
Alexander Duyck | f2ca0db | 2009-10-27 23:46:57 +0000 | [diff] [blame] | 1263 | adapter->vf_data[i].flags = 0; |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 1264 | |
| 1265 | /* ping all the active vfs to let them know we are going down */ |
Alexander Duyck | f2ca0db | 2009-10-27 23:46:57 +0000 | [diff] [blame] | 1266 | igb_ping_all_vfs(adapter); |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 1267 | |
| 1268 | /* disable transmits and receives */ |
| 1269 | wr32(E1000_VFRE, 0); |
| 1270 | wr32(E1000_VFTE, 0); |
| 1271 | } |
| 1272 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1273 | /* Allow time for pending master requests to run */ |
| 1274 | adapter->hw.mac.ops.reset_hw(&adapter->hw); |
| 1275 | wr32(E1000_WUC, 0); |
| 1276 | |
| 1277 | if (adapter->hw.mac.ops.init_hw(&adapter->hw)) |
| 1278 | dev_err(&adapter->pdev->dev, "Hardware Error\n"); |
| 1279 | |
| 1280 | igb_update_mng_vlan(adapter); |
| 1281 | |
| 1282 | /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */ |
| 1283 | wr32(E1000_VET, ETHERNET_IEEE_VLAN_TYPE); |
| 1284 | |
| 1285 | igb_reset_adaptive(&adapter->hw); |
Alexander Duyck | f5f4cf0 | 2008-11-21 21:30:24 -0800 | [diff] [blame] | 1286 | igb_get_phy_info(&adapter->hw); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1287 | } |
| 1288 | |
Stephen Hemminger | 2e5c692 | 2008-11-19 22:20:44 -0800 | [diff] [blame] | 1289 | static const struct net_device_ops igb_netdev_ops = { |
| 1290 | .ndo_open = igb_open, |
| 1291 | .ndo_stop = igb_close, |
Stephen Hemminger | 0082982 | 2008-11-20 20:14:53 -0800 | [diff] [blame] | 1292 | .ndo_start_xmit = igb_xmit_frame_adv, |
Stephen Hemminger | 2e5c692 | 2008-11-19 22:20:44 -0800 | [diff] [blame] | 1293 | .ndo_get_stats = igb_get_stats, |
Alexander Duyck | ff41f8d | 2009-09-03 14:48:56 +0000 | [diff] [blame] | 1294 | .ndo_set_rx_mode = igb_set_rx_mode, |
| 1295 | .ndo_set_multicast_list = igb_set_rx_mode, |
Stephen Hemminger | 2e5c692 | 2008-11-19 22:20:44 -0800 | [diff] [blame] | 1296 | .ndo_set_mac_address = igb_set_mac, |
| 1297 | .ndo_change_mtu = igb_change_mtu, |
| 1298 | .ndo_do_ioctl = igb_ioctl, |
| 1299 | .ndo_tx_timeout = igb_tx_timeout, |
| 1300 | .ndo_validate_addr = eth_validate_addr, |
| 1301 | .ndo_vlan_rx_register = igb_vlan_rx_register, |
| 1302 | .ndo_vlan_rx_add_vid = igb_vlan_rx_add_vid, |
| 1303 | .ndo_vlan_rx_kill_vid = igb_vlan_rx_kill_vid, |
| 1304 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 1305 | .ndo_poll_controller = igb_netpoll, |
| 1306 | #endif |
| 1307 | }; |
| 1308 | |
Taku Izumi | 42bfd33a | 2008-06-20 12:10:30 +0900 | [diff] [blame] | 1309 | /** |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1310 | * igb_probe - Device Initialization Routine |
| 1311 | * @pdev: PCI device information struct |
| 1312 | * @ent: entry in igb_pci_tbl |
| 1313 | * |
| 1314 | * Returns 0 on success, negative on failure |
| 1315 | * |
| 1316 | * igb_probe initializes an adapter identified by a pci_dev structure. |
| 1317 | * The OS initialization, configuring of the adapter private structure, |
| 1318 | * and a hardware reset occur. |
| 1319 | **/ |
| 1320 | static int __devinit igb_probe(struct pci_dev *pdev, |
| 1321 | const struct pci_device_id *ent) |
| 1322 | { |
| 1323 | struct net_device *netdev; |
| 1324 | struct igb_adapter *adapter; |
| 1325 | struct e1000_hw *hw; |
Alexander Duyck | 4337e99 | 2009-10-27 23:48:31 +0000 | [diff] [blame] | 1326 | u16 eeprom_data = 0; |
| 1327 | static int global_quad_port_a; /* global quad port a indication */ |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1328 | const struct e1000_info *ei = igb_info_tbl[ent->driver_data]; |
| 1329 | unsigned long mmio_start, mmio_len; |
David S. Miller | 2d6a5e9 | 2009-03-17 15:01:30 -0700 | [diff] [blame] | 1330 | int err, pci_using_dac; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1331 | u16 eeprom_apme_mask = IGB_EEPROM_APME; |
| 1332 | u32 part_num; |
| 1333 | |
Alexander Duyck | aed5dec | 2009-02-06 23:16:04 +0000 | [diff] [blame] | 1334 | err = pci_enable_device_mem(pdev); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1335 | if (err) |
| 1336 | return err; |
| 1337 | |
| 1338 | pci_using_dac = 0; |
Yang Hongyang | 6a35528 | 2009-04-06 19:01:13 -0700 | [diff] [blame] | 1339 | err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64)); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1340 | if (!err) { |
Yang Hongyang | 6a35528 | 2009-04-06 19:01:13 -0700 | [diff] [blame] | 1341 | err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1342 | if (!err) |
| 1343 | pci_using_dac = 1; |
| 1344 | } else { |
Yang Hongyang | 284901a | 2009-04-06 19:01:15 -0700 | [diff] [blame] | 1345 | err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1346 | if (err) { |
Yang Hongyang | 284901a | 2009-04-06 19:01:15 -0700 | [diff] [blame] | 1347 | err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1348 | if (err) { |
| 1349 | dev_err(&pdev->dev, "No usable DMA " |
| 1350 | "configuration, aborting\n"); |
| 1351 | goto err_dma; |
| 1352 | } |
| 1353 | } |
| 1354 | } |
| 1355 | |
Alexander Duyck | aed5dec | 2009-02-06 23:16:04 +0000 | [diff] [blame] | 1356 | err = pci_request_selected_regions(pdev, pci_select_bars(pdev, |
| 1357 | IORESOURCE_MEM), |
| 1358 | igb_driver_name); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1359 | if (err) |
| 1360 | goto err_pci_reg; |
| 1361 | |
Frans Pop | 19d5afd | 2009-10-02 10:04:12 -0700 | [diff] [blame] | 1362 | pci_enable_pcie_error_reporting(pdev); |
Alexander Duyck | 40a914f | 2008-11-27 00:24:37 -0800 | [diff] [blame] | 1363 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1364 | pci_set_master(pdev); |
Auke Kok | c682fc2 | 2008-04-23 11:09:34 -0700 | [diff] [blame] | 1365 | pci_save_state(pdev); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1366 | |
| 1367 | err = -ENOMEM; |
Alexander Duyck | 1bfaf07 | 2009-02-19 20:39:23 -0800 | [diff] [blame] | 1368 | netdev = alloc_etherdev_mq(sizeof(struct igb_adapter), |
| 1369 | IGB_ABS_MAX_TX_QUEUES); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1370 | if (!netdev) |
| 1371 | goto err_alloc_etherdev; |
| 1372 | |
| 1373 | SET_NETDEV_DEV(netdev, &pdev->dev); |
| 1374 | |
| 1375 | pci_set_drvdata(pdev, netdev); |
| 1376 | adapter = netdev_priv(netdev); |
| 1377 | adapter->netdev = netdev; |
| 1378 | adapter->pdev = pdev; |
| 1379 | hw = &adapter->hw; |
| 1380 | hw->back = adapter; |
| 1381 | adapter->msg_enable = NETIF_MSG_DRV | NETIF_MSG_PROBE; |
| 1382 | |
| 1383 | mmio_start = pci_resource_start(pdev, 0); |
| 1384 | mmio_len = pci_resource_len(pdev, 0); |
| 1385 | |
| 1386 | err = -EIO; |
Alexander Duyck | 28b0759 | 2009-02-06 23:20:31 +0000 | [diff] [blame] | 1387 | hw->hw_addr = ioremap(mmio_start, mmio_len); |
| 1388 | if (!hw->hw_addr) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1389 | goto err_ioremap; |
| 1390 | |
Stephen Hemminger | 2e5c692 | 2008-11-19 22:20:44 -0800 | [diff] [blame] | 1391 | netdev->netdev_ops = &igb_netdev_ops; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1392 | igb_set_ethtool_ops(netdev); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1393 | netdev->watchdog_timeo = 5 * HZ; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1394 | |
| 1395 | strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1); |
| 1396 | |
| 1397 | netdev->mem_start = mmio_start; |
| 1398 | netdev->mem_end = mmio_start + mmio_len; |
| 1399 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1400 | /* PCI config space info */ |
| 1401 | hw->vendor_id = pdev->vendor; |
| 1402 | hw->device_id = pdev->device; |
| 1403 | hw->revision_id = pdev->revision; |
| 1404 | hw->subsystem_vendor_id = pdev->subsystem_vendor; |
| 1405 | hw->subsystem_device_id = pdev->subsystem_device; |
| 1406 | |
| 1407 | /* setup the private structure */ |
| 1408 | hw->back = adapter; |
| 1409 | /* Copy the default MAC, PHY and NVM function pointers */ |
| 1410 | memcpy(&hw->mac.ops, ei->mac_ops, sizeof(hw->mac.ops)); |
| 1411 | memcpy(&hw->phy.ops, ei->phy_ops, sizeof(hw->phy.ops)); |
| 1412 | memcpy(&hw->nvm.ops, ei->nvm_ops, sizeof(hw->nvm.ops)); |
| 1413 | /* Initialize skew-specific constants */ |
| 1414 | err = ei->get_invariants(hw); |
| 1415 | if (err) |
Alexander Duyck | 450c87c | 2009-02-06 23:22:11 +0000 | [diff] [blame] | 1416 | goto err_sw_init; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1417 | |
Alexander Duyck | 450c87c | 2009-02-06 23:22:11 +0000 | [diff] [blame] | 1418 | /* setup the private structure */ |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1419 | err = igb_sw_init(adapter); |
| 1420 | if (err) |
| 1421 | goto err_sw_init; |
| 1422 | |
| 1423 | igb_get_bus_info_pcie(hw); |
| 1424 | |
| 1425 | hw->phy.autoneg_wait_to_complete = false; |
| 1426 | hw->mac.adaptive_ifs = true; |
| 1427 | |
| 1428 | /* Copper options */ |
| 1429 | if (hw->phy.media_type == e1000_media_type_copper) { |
| 1430 | hw->phy.mdix = AUTO_ALL_MODES; |
| 1431 | hw->phy.disable_polarity_correction = false; |
| 1432 | hw->phy.ms_type = e1000_ms_hw_default; |
| 1433 | } |
| 1434 | |
| 1435 | if (igb_check_reset_block(hw)) |
| 1436 | dev_info(&pdev->dev, |
| 1437 | "PHY reset is blocked due to SOL/IDER session.\n"); |
| 1438 | |
| 1439 | netdev->features = NETIF_F_SG | |
Alexander Duyck | 7d8eb29 | 2009-02-06 23:18:27 +0000 | [diff] [blame] | 1440 | NETIF_F_IP_CSUM | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1441 | NETIF_F_HW_VLAN_TX | |
| 1442 | NETIF_F_HW_VLAN_RX | |
| 1443 | NETIF_F_HW_VLAN_FILTER; |
| 1444 | |
Alexander Duyck | 7d8eb29 | 2009-02-06 23:18:27 +0000 | [diff] [blame] | 1445 | netdev->features |= NETIF_F_IPV6_CSUM; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1446 | netdev->features |= NETIF_F_TSO; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1447 | netdev->features |= NETIF_F_TSO6; |
Jeff Kirsher | 48f29ff | 2008-06-05 04:06:27 -0700 | [diff] [blame] | 1448 | |
Herbert Xu | 5c0999b | 2009-01-19 15:20:57 -0800 | [diff] [blame] | 1449 | netdev->features |= NETIF_F_GRO; |
Alexander Duyck | d335252 | 2008-07-08 15:12:13 -0700 | [diff] [blame] | 1450 | |
Jeff Kirsher | 48f29ff | 2008-06-05 04:06:27 -0700 | [diff] [blame] | 1451 | netdev->vlan_features |= NETIF_F_TSO; |
| 1452 | netdev->vlan_features |= NETIF_F_TSO6; |
Alexander Duyck | 7d8eb29 | 2009-02-06 23:18:27 +0000 | [diff] [blame] | 1453 | netdev->vlan_features |= NETIF_F_IP_CSUM; |
Alexander Duyck | cd1da50 | 2009-08-25 04:47:50 +0000 | [diff] [blame] | 1454 | netdev->vlan_features |= NETIF_F_IPV6_CSUM; |
Jeff Kirsher | 48f29ff | 2008-06-05 04:06:27 -0700 | [diff] [blame] | 1455 | netdev->vlan_features |= NETIF_F_SG; |
| 1456 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1457 | if (pci_using_dac) |
| 1458 | netdev->features |= NETIF_F_HIGHDMA; |
| 1459 | |
Jesse Brandeburg | b947356 | 2009-04-27 22:36:13 +0000 | [diff] [blame] | 1460 | if (adapter->hw.mac.type == e1000_82576) |
| 1461 | netdev->features |= NETIF_F_SCTP_CSUM; |
| 1462 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1463 | adapter->en_mng_pt = igb_enable_mng_pass_thru(&adapter->hw); |
| 1464 | |
| 1465 | /* before reading the NVM, reset the controller to put the device in a |
| 1466 | * known good starting state */ |
| 1467 | hw->mac.ops.reset_hw(hw); |
| 1468 | |
| 1469 | /* make sure the NVM is good */ |
| 1470 | if (igb_validate_nvm_checksum(hw) < 0) { |
| 1471 | dev_err(&pdev->dev, "The NVM Checksum Is Not Valid\n"); |
| 1472 | err = -EIO; |
| 1473 | goto err_eeprom; |
| 1474 | } |
| 1475 | |
| 1476 | /* copy the MAC address out of the NVM */ |
| 1477 | if (hw->mac.ops.read_mac_addr(hw)) |
| 1478 | dev_err(&pdev->dev, "NVM Read Error\n"); |
| 1479 | |
| 1480 | memcpy(netdev->dev_addr, hw->mac.addr, netdev->addr_len); |
| 1481 | memcpy(netdev->perm_addr, hw->mac.addr, netdev->addr_len); |
| 1482 | |
| 1483 | if (!is_valid_ether_addr(netdev->perm_addr)) { |
| 1484 | dev_err(&pdev->dev, "Invalid MAC Address\n"); |
| 1485 | err = -EIO; |
| 1486 | goto err_eeprom; |
| 1487 | } |
| 1488 | |
Alexander Duyck | 0e34048 | 2009-03-20 00:17:08 +0000 | [diff] [blame] | 1489 | setup_timer(&adapter->watchdog_timer, &igb_watchdog, |
| 1490 | (unsigned long) adapter); |
| 1491 | setup_timer(&adapter->phy_info_timer, &igb_update_phy_info, |
| 1492 | (unsigned long) adapter); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1493 | |
| 1494 | INIT_WORK(&adapter->reset_task, igb_reset_task); |
| 1495 | INIT_WORK(&adapter->watchdog_task, igb_watchdog_task); |
| 1496 | |
Alexander Duyck | 450c87c | 2009-02-06 23:22:11 +0000 | [diff] [blame] | 1497 | /* Initialize link properties that are user-changeable */ |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1498 | adapter->fc_autoneg = true; |
| 1499 | hw->mac.autoneg = true; |
| 1500 | hw->phy.autoneg_advertised = 0x2f; |
| 1501 | |
Alexander Duyck | 0cce119 | 2009-07-23 18:10:24 +0000 | [diff] [blame] | 1502 | hw->fc.requested_mode = e1000_fc_default; |
| 1503 | hw->fc.current_mode = e1000_fc_default; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1504 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1505 | igb_validate_mdi_setting(hw); |
| 1506 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1507 | /* Initial Wake on LAN setting If APM wake is enabled in the EEPROM, |
| 1508 | * enable the ACPI Magic Packet filter |
| 1509 | */ |
| 1510 | |
Alexander Duyck | a2cf8b6 | 2009-03-13 20:41:17 +0000 | [diff] [blame] | 1511 | if (hw->bus.func == 0) |
Alexander Duyck | 312c75a | 2009-02-06 23:17:47 +0000 | [diff] [blame] | 1512 | 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] | 1513 | else if (hw->bus.func == 1) |
| 1514 | 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] | 1515 | |
| 1516 | if (eeprom_data & eeprom_apme_mask) |
| 1517 | adapter->eeprom_wol |= E1000_WUFC_MAG; |
| 1518 | |
| 1519 | /* now that we have the eeprom settings, apply the special cases where |
| 1520 | * the eeprom may be wrong or the board simply won't support wake on |
| 1521 | * lan on a particular port */ |
| 1522 | switch (pdev->device) { |
| 1523 | case E1000_DEV_ID_82575GB_QUAD_COPPER: |
| 1524 | adapter->eeprom_wol = 0; |
| 1525 | break; |
| 1526 | case E1000_DEV_ID_82575EB_FIBER_SERDES: |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 1527 | case E1000_DEV_ID_82576_FIBER: |
| 1528 | case E1000_DEV_ID_82576_SERDES: |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1529 | /* Wake events only supported on port A for dual fiber |
| 1530 | * regardless of eeprom setting */ |
| 1531 | if (rd32(E1000_STATUS) & E1000_STATUS_FUNC_1) |
| 1532 | adapter->eeprom_wol = 0; |
| 1533 | break; |
Alexander Duyck | c8ea5ea | 2009-03-13 20:42:35 +0000 | [diff] [blame] | 1534 | case E1000_DEV_ID_82576_QUAD_COPPER: |
| 1535 | /* if quad port adapter, disable WoL on all but port A */ |
| 1536 | if (global_quad_port_a != 0) |
| 1537 | adapter->eeprom_wol = 0; |
| 1538 | else |
| 1539 | adapter->flags |= IGB_FLAG_QUAD_PORT_A; |
| 1540 | /* Reset for multiple quad port adapters */ |
| 1541 | if (++global_quad_port_a == 4) |
| 1542 | global_quad_port_a = 0; |
| 1543 | break; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1544 | } |
| 1545 | |
| 1546 | /* initialize the wol settings based on the eeprom settings */ |
| 1547 | adapter->wol = adapter->eeprom_wol; |
\"Rafael J. Wysocki\ | e1b86d8 | 2008-11-07 20:30:37 +0000 | [diff] [blame] | 1548 | device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1549 | |
| 1550 | /* reset the hardware with the new settings */ |
| 1551 | igb_reset(adapter); |
| 1552 | |
| 1553 | /* let the f/w know that the h/w is now under the control of the |
| 1554 | * driver. */ |
| 1555 | igb_get_hw_control(adapter); |
| 1556 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1557 | strcpy(netdev->name, "eth%d"); |
| 1558 | err = register_netdev(netdev); |
| 1559 | if (err) |
| 1560 | goto err_register; |
| 1561 | |
Jesse Brandeburg | b168dfc | 2009-04-17 20:44:32 +0000 | [diff] [blame] | 1562 | /* carrier off reporting is important to ethtool even BEFORE open */ |
| 1563 | netif_carrier_off(netdev); |
| 1564 | |
Jeff Kirsher | 421e02f | 2008-10-17 11:08:31 -0700 | [diff] [blame] | 1565 | #ifdef CONFIG_IGB_DCA |
Alexander Duyck | bbd98fe | 2009-01-31 00:52:30 -0800 | [diff] [blame] | 1566 | if (dca_add_requester(&pdev->dev) == 0) { |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 1567 | adapter->flags |= IGB_FLAG_DCA_ENABLED; |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 1568 | dev_info(&pdev->dev, "DCA enabled\n"); |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 1569 | igb_setup_dca(adapter); |
| 1570 | } |
Alexander Duyck | c5b9bd5 | 2009-10-27 23:46:01 +0000 | [diff] [blame] | 1571 | |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 1572 | #endif |
| 1573 | |
Alexander Duyck | c5b9bd5 | 2009-10-27 23:46:01 +0000 | [diff] [blame] | 1574 | switch (hw->mac.type) { |
| 1575 | case e1000_82576: |
| 1576 | /* |
| 1577 | * Initialize hardware timer: we keep it running just in case |
| 1578 | * that some program needs it later on. |
| 1579 | */ |
| 1580 | memset(&adapter->cycles, 0, sizeof(adapter->cycles)); |
| 1581 | adapter->cycles.read = igb_read_clock; |
| 1582 | adapter->cycles.mask = CLOCKSOURCE_MASK(64); |
| 1583 | adapter->cycles.mult = 1; |
| 1584 | /** |
| 1585 | * Scale the NIC clock cycle by a large factor so that |
| 1586 | * relatively small clock corrections can be added or |
| 1587 | * substracted at each clock tick. The drawbacks of a large |
| 1588 | * factor are a) that the clock register overflows more quickly |
| 1589 | * (not such a big deal) and b) that the increment per tick has |
| 1590 | * to fit into 24 bits. As a result we need to use a shift of |
| 1591 | * 19 so we can fit a value of 16 into the TIMINCA register. |
| 1592 | */ |
| 1593 | adapter->cycles.shift = IGB_82576_TSYNC_SHIFT; |
| 1594 | wr32(E1000_TIMINCA, |
| 1595 | (1 << E1000_TIMINCA_16NS_SHIFT) | |
| 1596 | (16 << IGB_82576_TSYNC_SHIFT)); |
Patrick Ohly | 38c845c | 2009-02-12 05:03:41 +0000 | [diff] [blame] | 1597 | |
Alexander Duyck | c5b9bd5 | 2009-10-27 23:46:01 +0000 | [diff] [blame] | 1598 | /* Set registers so that rollover occurs soon to test this. */ |
| 1599 | wr32(E1000_SYSTIML, 0x00000000); |
| 1600 | wr32(E1000_SYSTIMH, 0xFF800000); |
| 1601 | wrfl(); |
Patrick Ohly | 33af6bc | 2009-02-12 05:03:43 +0000 | [diff] [blame] | 1602 | |
Alexander Duyck | c5b9bd5 | 2009-10-27 23:46:01 +0000 | [diff] [blame] | 1603 | timecounter_init(&adapter->clock, |
| 1604 | &adapter->cycles, |
| 1605 | ktime_to_ns(ktime_get_real())); |
| 1606 | /* |
| 1607 | * Synchronize our NIC clock against system wall clock. NIC |
| 1608 | * time stamp reading requires ~3us per sample, each sample |
| 1609 | * was pretty stable even under load => only require 10 |
| 1610 | * samples for each offset comparison. |
| 1611 | */ |
| 1612 | memset(&adapter->compare, 0, sizeof(adapter->compare)); |
| 1613 | adapter->compare.source = &adapter->clock; |
| 1614 | adapter->compare.target = ktime_get_real; |
| 1615 | adapter->compare.num_samples = 10; |
| 1616 | timecompare_update(&adapter->compare, 0); |
| 1617 | break; |
| 1618 | case e1000_82575: |
| 1619 | /* 82575 does not support timesync */ |
| 1620 | default: |
| 1621 | break; |
Patrick Ohly | 38c845c | 2009-02-12 05:03:41 +0000 | [diff] [blame] | 1622 | } |
Patrick Ohly | 38c845c | 2009-02-12 05:03:41 +0000 | [diff] [blame] | 1623 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1624 | dev_info(&pdev->dev, "Intel(R) Gigabit Ethernet Network Connection\n"); |
| 1625 | /* print bus type/speed/width info */ |
Johannes Berg | 7c510e4 | 2008-10-27 17:47:26 -0700 | [diff] [blame] | 1626 | dev_info(&pdev->dev, "%s: (PCIe:%s:%s) %pM\n", |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1627 | netdev->name, |
| 1628 | ((hw->bus.speed == e1000_bus_speed_2500) |
| 1629 | ? "2.5Gb/s" : "unknown"), |
Alexander Duyck | 59c3de8 | 2009-03-31 20:38:00 +0000 | [diff] [blame] | 1630 | ((hw->bus.width == e1000_bus_width_pcie_x4) ? "Width x4" : |
| 1631 | (hw->bus.width == e1000_bus_width_pcie_x2) ? "Width x2" : |
| 1632 | (hw->bus.width == e1000_bus_width_pcie_x1) ? "Width x1" : |
| 1633 | "unknown"), |
Johannes Berg | 7c510e4 | 2008-10-27 17:47:26 -0700 | [diff] [blame] | 1634 | netdev->dev_addr); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1635 | |
| 1636 | igb_read_part_num(hw, &part_num); |
| 1637 | dev_info(&pdev->dev, "%s: PBA No: %06x-%03x\n", netdev->name, |
| 1638 | (part_num >> 8), (part_num & 0xff)); |
| 1639 | |
| 1640 | dev_info(&pdev->dev, |
| 1641 | "Using %s interrupts. %d rx queue(s), %d tx queue(s)\n", |
| 1642 | adapter->msix_entries ? "MSI-X" : |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 1643 | (adapter->flags & IGB_FLAG_HAS_MSI) ? "MSI" : "legacy", |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1644 | adapter->num_rx_queues, adapter->num_tx_queues); |
| 1645 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1646 | return 0; |
| 1647 | |
| 1648 | err_register: |
| 1649 | igb_release_hw_control(adapter); |
| 1650 | err_eeprom: |
| 1651 | if (!igb_check_reset_block(hw)) |
Alexander Duyck | f5f4cf0 | 2008-11-21 21:30:24 -0800 | [diff] [blame] | 1652 | igb_reset_phy(hw); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1653 | |
| 1654 | if (hw->flash_address) |
| 1655 | iounmap(hw->flash_address); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1656 | err_sw_init: |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 1657 | igb_clear_interrupt_scheme(adapter); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1658 | iounmap(hw->hw_addr); |
| 1659 | err_ioremap: |
| 1660 | free_netdev(netdev); |
| 1661 | err_alloc_etherdev: |
Alexander Duyck | aed5dec | 2009-02-06 23:16:04 +0000 | [diff] [blame] | 1662 | pci_release_selected_regions(pdev, pci_select_bars(pdev, |
| 1663 | IORESOURCE_MEM)); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1664 | err_pci_reg: |
| 1665 | err_dma: |
| 1666 | pci_disable_device(pdev); |
| 1667 | return err; |
| 1668 | } |
| 1669 | |
| 1670 | /** |
| 1671 | * igb_remove - Device Removal Routine |
| 1672 | * @pdev: PCI device information struct |
| 1673 | * |
| 1674 | * igb_remove is called by the PCI subsystem to alert the driver |
| 1675 | * that it should release a PCI device. The could be caused by a |
| 1676 | * Hot-Plug event, or because the driver is going to be removed from |
| 1677 | * memory. |
| 1678 | **/ |
| 1679 | static void __devexit igb_remove(struct pci_dev *pdev) |
| 1680 | { |
| 1681 | struct net_device *netdev = pci_get_drvdata(pdev); |
| 1682 | struct igb_adapter *adapter = netdev_priv(netdev); |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 1683 | struct e1000_hw *hw = &adapter->hw; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1684 | |
| 1685 | /* flush_scheduled work may reschedule our watchdog task, so |
| 1686 | * explicitly disable watchdog tasks from being rescheduled */ |
| 1687 | set_bit(__IGB_DOWN, &adapter->state); |
| 1688 | del_timer_sync(&adapter->watchdog_timer); |
| 1689 | del_timer_sync(&adapter->phy_info_timer); |
| 1690 | |
| 1691 | flush_scheduled_work(); |
| 1692 | |
Jeff Kirsher | 421e02f | 2008-10-17 11:08:31 -0700 | [diff] [blame] | 1693 | #ifdef CONFIG_IGB_DCA |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 1694 | if (adapter->flags & IGB_FLAG_DCA_ENABLED) { |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 1695 | dev_info(&pdev->dev, "DCA disabled\n"); |
| 1696 | dca_remove_requester(&pdev->dev); |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 1697 | adapter->flags &= ~IGB_FLAG_DCA_ENABLED; |
Alexander Duyck | cbd347a | 2009-02-15 23:59:44 -0800 | [diff] [blame] | 1698 | wr32(E1000_DCA_CTRL, E1000_DCA_CTRL_DCA_MODE_DISABLE); |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 1699 | } |
| 1700 | #endif |
| 1701 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1702 | /* Release control of h/w to f/w. If f/w is AMT enabled, this |
| 1703 | * would have already happened in close and is redundant. */ |
| 1704 | igb_release_hw_control(adapter); |
| 1705 | |
| 1706 | unregister_netdev(netdev); |
| 1707 | |
Alexander Duyck | f5f4cf0 | 2008-11-21 21:30:24 -0800 | [diff] [blame] | 1708 | if (!igb_check_reset_block(&adapter->hw)) |
| 1709 | igb_reset_phy(&adapter->hw); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1710 | |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 1711 | igb_clear_interrupt_scheme(adapter); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1712 | |
Alexander Duyck | 3768011 | 2009-02-19 20:40:30 -0800 | [diff] [blame] | 1713 | #ifdef CONFIG_PCI_IOV |
| 1714 | /* reclaim resources allocated to VFs */ |
| 1715 | if (adapter->vf_data) { |
| 1716 | /* disable iov and allow time for transactions to clear */ |
| 1717 | pci_disable_sriov(pdev); |
| 1718 | msleep(500); |
| 1719 | |
| 1720 | kfree(adapter->vf_data); |
| 1721 | adapter->vf_data = NULL; |
| 1722 | wr32(E1000_IOVCTL, E1000_IOVCTL_REUSE_VFQ); |
| 1723 | msleep(100); |
| 1724 | dev_info(&pdev->dev, "IOV Disabled\n"); |
| 1725 | } |
| 1726 | #endif |
Alexander Duyck | 28b0759 | 2009-02-06 23:20:31 +0000 | [diff] [blame] | 1727 | iounmap(hw->hw_addr); |
| 1728 | if (hw->flash_address) |
| 1729 | iounmap(hw->flash_address); |
Alexander Duyck | aed5dec | 2009-02-06 23:16:04 +0000 | [diff] [blame] | 1730 | pci_release_selected_regions(pdev, pci_select_bars(pdev, |
| 1731 | IORESOURCE_MEM)); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1732 | |
| 1733 | free_netdev(netdev); |
| 1734 | |
Frans Pop | 19d5afd | 2009-10-02 10:04:12 -0700 | [diff] [blame] | 1735 | pci_disable_pcie_error_reporting(pdev); |
Alexander Duyck | 40a914f | 2008-11-27 00:24:37 -0800 | [diff] [blame] | 1736 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1737 | pci_disable_device(pdev); |
| 1738 | } |
| 1739 | |
| 1740 | /** |
Alexander Duyck | a6b623e | 2009-10-27 23:47:53 +0000 | [diff] [blame] | 1741 | * igb_probe_vfs - Initialize vf data storage and add VFs to pci config space |
| 1742 | * @adapter: board private structure to initialize |
| 1743 | * |
| 1744 | * This function initializes the vf specific data storage and then attempts to |
| 1745 | * allocate the VFs. The reason for ordering it this way is because it is much |
| 1746 | * mor expensive time wise to disable SR-IOV than it is to allocate and free |
| 1747 | * the memory for the VFs. |
| 1748 | **/ |
| 1749 | static void __devinit igb_probe_vfs(struct igb_adapter * adapter) |
| 1750 | { |
| 1751 | #ifdef CONFIG_PCI_IOV |
| 1752 | struct pci_dev *pdev = adapter->pdev; |
| 1753 | |
| 1754 | if (adapter->vfs_allocated_count > 7) |
| 1755 | adapter->vfs_allocated_count = 7; |
| 1756 | |
| 1757 | if (adapter->vfs_allocated_count) { |
| 1758 | adapter->vf_data = kcalloc(adapter->vfs_allocated_count, |
| 1759 | sizeof(struct vf_data_storage), |
| 1760 | GFP_KERNEL); |
| 1761 | /* if allocation failed then we do not support SR-IOV */ |
| 1762 | if (!adapter->vf_data) { |
| 1763 | adapter->vfs_allocated_count = 0; |
| 1764 | dev_err(&pdev->dev, "Unable to allocate memory for VF " |
| 1765 | "Data Storage\n"); |
| 1766 | } |
| 1767 | } |
| 1768 | |
| 1769 | if (pci_enable_sriov(pdev, adapter->vfs_allocated_count)) { |
| 1770 | kfree(adapter->vf_data); |
| 1771 | adapter->vf_data = NULL; |
| 1772 | #endif /* CONFIG_PCI_IOV */ |
| 1773 | adapter->vfs_allocated_count = 0; |
| 1774 | #ifdef CONFIG_PCI_IOV |
| 1775 | } else { |
| 1776 | unsigned char mac_addr[ETH_ALEN]; |
| 1777 | int i; |
| 1778 | dev_info(&pdev->dev, "%d vfs allocated\n", |
| 1779 | adapter->vfs_allocated_count); |
| 1780 | for (i = 0; i < adapter->vfs_allocated_count; i++) { |
| 1781 | random_ether_addr(mac_addr); |
| 1782 | igb_set_vf_mac(adapter, i, mac_addr); |
| 1783 | } |
| 1784 | } |
| 1785 | #endif /* CONFIG_PCI_IOV */ |
| 1786 | } |
| 1787 | |
| 1788 | /** |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1789 | * igb_sw_init - Initialize general software structures (struct igb_adapter) |
| 1790 | * @adapter: board private structure to initialize |
| 1791 | * |
| 1792 | * igb_sw_init initializes the Adapter private data structure. |
| 1793 | * Fields are initialized based on PCI device information and |
| 1794 | * OS network device settings (MTU size). |
| 1795 | **/ |
| 1796 | static int __devinit igb_sw_init(struct igb_adapter *adapter) |
| 1797 | { |
| 1798 | struct e1000_hw *hw = &adapter->hw; |
| 1799 | struct net_device *netdev = adapter->netdev; |
| 1800 | struct pci_dev *pdev = adapter->pdev; |
| 1801 | |
| 1802 | pci_read_config_word(pdev, PCI_COMMAND, &hw->bus.pci_cmd_word); |
| 1803 | |
Alexander Duyck | 68fd991 | 2008-11-20 00:48:10 -0800 | [diff] [blame] | 1804 | adapter->tx_ring_count = IGB_DEFAULT_TXD; |
| 1805 | adapter->rx_ring_count = IGB_DEFAULT_RXD; |
Alexander Duyck | 4fc82ad | 2009-10-27 23:45:42 +0000 | [diff] [blame] | 1806 | adapter->rx_itr_setting = IGB_DEFAULT_ITR; |
| 1807 | adapter->tx_itr_setting = IGB_DEFAULT_ITR; |
| 1808 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1809 | adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN; |
| 1810 | adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN; |
| 1811 | |
Alexander Duyck | a6b623e | 2009-10-27 23:47:53 +0000 | [diff] [blame] | 1812 | #ifdef CONFIG_PCI_IOV |
| 1813 | if (hw->mac.type == e1000_82576) |
| 1814 | adapter->vfs_allocated_count = max_vfs; |
| 1815 | |
| 1816 | #endif /* CONFIG_PCI_IOV */ |
| 1817 | /* This call may decrease the number of queues */ |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 1818 | if (igb_init_interrupt_scheme(adapter)) { |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1819 | dev_err(&pdev->dev, "Unable to allocate memory for queues\n"); |
| 1820 | return -ENOMEM; |
| 1821 | } |
| 1822 | |
Alexander Duyck | a6b623e | 2009-10-27 23:47:53 +0000 | [diff] [blame] | 1823 | igb_probe_vfs(adapter); |
| 1824 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1825 | /* Explicitly disable IRQ since the NIC can be in any state. */ |
| 1826 | igb_irq_disable(adapter); |
| 1827 | |
| 1828 | set_bit(__IGB_DOWN, &adapter->state); |
| 1829 | return 0; |
| 1830 | } |
| 1831 | |
| 1832 | /** |
| 1833 | * igb_open - Called when a network interface is made active |
| 1834 | * @netdev: network interface device structure |
| 1835 | * |
| 1836 | * Returns 0 on success, negative value on failure |
| 1837 | * |
| 1838 | * The open entry point is called when a network interface is made |
| 1839 | * active by the system (IFF_UP). At this point all resources needed |
| 1840 | * for transmit and receive operations are allocated, the interrupt |
| 1841 | * handler is registered with the OS, the watchdog timer is started, |
| 1842 | * and the stack is notified that the interface is ready. |
| 1843 | **/ |
| 1844 | static int igb_open(struct net_device *netdev) |
| 1845 | { |
| 1846 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 1847 | struct e1000_hw *hw = &adapter->hw; |
| 1848 | int err; |
| 1849 | int i; |
| 1850 | |
| 1851 | /* disallow open during test */ |
| 1852 | if (test_bit(__IGB_TESTING, &adapter->state)) |
| 1853 | return -EBUSY; |
| 1854 | |
Jesse Brandeburg | b168dfc | 2009-04-17 20:44:32 +0000 | [diff] [blame] | 1855 | netif_carrier_off(netdev); |
| 1856 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1857 | /* allocate transmit descriptors */ |
| 1858 | err = igb_setup_all_tx_resources(adapter); |
| 1859 | if (err) |
| 1860 | goto err_setup_tx; |
| 1861 | |
| 1862 | /* allocate receive descriptors */ |
| 1863 | err = igb_setup_all_rx_resources(adapter); |
| 1864 | if (err) |
| 1865 | goto err_setup_rx; |
| 1866 | |
| 1867 | /* e1000_power_up_phy(adapter); */ |
| 1868 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1869 | /* before we allocate an interrupt, we must be ready to handle it. |
| 1870 | * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt |
| 1871 | * as soon as we call pci_request_irq, so we have to setup our |
| 1872 | * clean_rx handler before we do so. */ |
| 1873 | igb_configure(adapter); |
| 1874 | |
| 1875 | err = igb_request_irq(adapter); |
| 1876 | if (err) |
| 1877 | goto err_req_irq; |
| 1878 | |
| 1879 | /* From here on the code is the same as igb_up() */ |
| 1880 | clear_bit(__IGB_DOWN, &adapter->state); |
| 1881 | |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 1882 | for (i = 0; i < adapter->num_q_vectors; i++) { |
| 1883 | struct igb_q_vector *q_vector = adapter->q_vector[i]; |
| 1884 | napi_enable(&q_vector->napi); |
| 1885 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1886 | |
| 1887 | /* Clear any pending interrupts. */ |
| 1888 | rd32(E1000_ICR); |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 1889 | |
| 1890 | igb_irq_enable(adapter); |
| 1891 | |
Alexander Duyck | d496030 | 2009-10-27 15:53:45 +0000 | [diff] [blame] | 1892 | /* notify VFs that reset has been completed */ |
| 1893 | if (adapter->vfs_allocated_count) { |
| 1894 | u32 reg_data = rd32(E1000_CTRL_EXT); |
| 1895 | reg_data |= E1000_CTRL_EXT_PFRSTD; |
| 1896 | wr32(E1000_CTRL_EXT, reg_data); |
| 1897 | } |
| 1898 | |
Jeff Kirsher | d55b53f | 2008-07-18 04:33:03 -0700 | [diff] [blame] | 1899 | netif_tx_start_all_queues(netdev); |
| 1900 | |
Alexander Duyck | 25568a5 | 2009-10-27 23:49:59 +0000 | [diff] [blame] | 1901 | /* start the watchdog. */ |
| 1902 | hw->mac.get_link_status = 1; |
| 1903 | schedule_work(&adapter->watchdog_task); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1904 | |
| 1905 | return 0; |
| 1906 | |
| 1907 | err_req_irq: |
| 1908 | igb_release_hw_control(adapter); |
| 1909 | /* e1000_power_down_phy(adapter); */ |
| 1910 | igb_free_all_rx_resources(adapter); |
| 1911 | err_setup_rx: |
| 1912 | igb_free_all_tx_resources(adapter); |
| 1913 | err_setup_tx: |
| 1914 | igb_reset(adapter); |
| 1915 | |
| 1916 | return err; |
| 1917 | } |
| 1918 | |
| 1919 | /** |
| 1920 | * igb_close - Disables a network interface |
| 1921 | * @netdev: network interface device structure |
| 1922 | * |
| 1923 | * Returns 0, this is not allowed to fail |
| 1924 | * |
| 1925 | * The close entry point is called when an interface is de-activated |
| 1926 | * by the OS. The hardware is still under the driver's control, but |
| 1927 | * needs to be disabled. A global MAC reset is issued to stop the |
| 1928 | * hardware, and all transmit and receive resources are freed. |
| 1929 | **/ |
| 1930 | static int igb_close(struct net_device *netdev) |
| 1931 | { |
| 1932 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 1933 | |
| 1934 | WARN_ON(test_bit(__IGB_RESETTING, &adapter->state)); |
| 1935 | igb_down(adapter); |
| 1936 | |
| 1937 | igb_free_irq(adapter); |
| 1938 | |
| 1939 | igb_free_all_tx_resources(adapter); |
| 1940 | igb_free_all_rx_resources(adapter); |
| 1941 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1942 | return 0; |
| 1943 | } |
| 1944 | |
| 1945 | /** |
| 1946 | * igb_setup_tx_resources - allocate Tx resources (Descriptors) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1947 | * @tx_ring: tx descriptor ring (for a specific queue) to setup |
| 1948 | * |
| 1949 | * Return 0 on success, negative on failure |
| 1950 | **/ |
Alexander Duyck | 8078529 | 2009-10-27 15:51:47 +0000 | [diff] [blame] | 1951 | int igb_setup_tx_resources(struct igb_ring *tx_ring) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1952 | { |
Alexander Duyck | 8078529 | 2009-10-27 15:51:47 +0000 | [diff] [blame] | 1953 | struct pci_dev *pdev = tx_ring->pdev; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1954 | int size; |
| 1955 | |
| 1956 | size = sizeof(struct igb_buffer) * tx_ring->count; |
| 1957 | tx_ring->buffer_info = vmalloc(size); |
| 1958 | if (!tx_ring->buffer_info) |
| 1959 | goto err; |
| 1960 | memset(tx_ring->buffer_info, 0, size); |
| 1961 | |
| 1962 | /* round up to nearest 4K */ |
Alexander Duyck | 85e8d00 | 2009-02-16 00:00:20 -0800 | [diff] [blame] | 1963 | tx_ring->size = tx_ring->count * sizeof(union e1000_adv_tx_desc); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1964 | tx_ring->size = ALIGN(tx_ring->size, 4096); |
| 1965 | |
Alexander Duyck | 439705e | 2009-10-27 23:49:20 +0000 | [diff] [blame] | 1966 | tx_ring->desc = pci_alloc_consistent(pdev, |
| 1967 | tx_ring->size, |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1968 | &tx_ring->dma); |
| 1969 | |
| 1970 | if (!tx_ring->desc) |
| 1971 | goto err; |
| 1972 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1973 | tx_ring->next_to_use = 0; |
| 1974 | tx_ring->next_to_clean = 0; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1975 | return 0; |
| 1976 | |
| 1977 | err: |
| 1978 | vfree(tx_ring->buffer_info); |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 1979 | dev_err(&pdev->dev, |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1980 | "Unable to allocate memory for the transmit descriptor ring\n"); |
| 1981 | return -ENOMEM; |
| 1982 | } |
| 1983 | |
| 1984 | /** |
| 1985 | * igb_setup_all_tx_resources - wrapper to allocate Tx resources |
| 1986 | * (Descriptors) for all queues |
| 1987 | * @adapter: board private structure |
| 1988 | * |
| 1989 | * Return 0 on success, negative on failure |
| 1990 | **/ |
| 1991 | static int igb_setup_all_tx_resources(struct igb_adapter *adapter) |
| 1992 | { |
Alexander Duyck | 439705e | 2009-10-27 23:49:20 +0000 | [diff] [blame] | 1993 | struct pci_dev *pdev = adapter->pdev; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1994 | int i, err = 0; |
| 1995 | |
| 1996 | for (i = 0; i < adapter->num_tx_queues; i++) { |
Alexander Duyck | 8078529 | 2009-10-27 15:51:47 +0000 | [diff] [blame] | 1997 | err = igb_setup_tx_resources(&adapter->tx_ring[i]); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 1998 | if (err) { |
Alexander Duyck | 439705e | 2009-10-27 23:49:20 +0000 | [diff] [blame] | 1999 | dev_err(&pdev->dev, |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2000 | "Allocation for Tx Queue %u failed\n", i); |
| 2001 | for (i--; i >= 0; i--) |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 2002 | igb_free_tx_resources(&adapter->tx_ring[i]); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2003 | break; |
| 2004 | } |
| 2005 | } |
| 2006 | |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 2007 | for (i = 0; i < IGB_MAX_TX_QUEUES; i++) { |
Alexander Duyck | 439705e | 2009-10-27 23:49:20 +0000 | [diff] [blame] | 2008 | int r_idx = i % adapter->num_tx_queues; |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 2009 | adapter->multi_tx_table[i] = &adapter->tx_ring[r_idx]; |
Alexander Duyck | eebbbdb | 2009-02-06 23:19:29 +0000 | [diff] [blame] | 2010 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2011 | return err; |
| 2012 | } |
| 2013 | |
| 2014 | /** |
Alexander Duyck | 85b430b | 2009-10-27 15:50:29 +0000 | [diff] [blame] | 2015 | * igb_setup_tctl - configure the transmit control registers |
| 2016 | * @adapter: Board private structure |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2017 | **/ |
Alexander Duyck | d7ee5b3 | 2009-10-27 15:54:23 +0000 | [diff] [blame] | 2018 | void igb_setup_tctl(struct igb_adapter *adapter) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2019 | { |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2020 | struct e1000_hw *hw = &adapter->hw; |
| 2021 | u32 tctl; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2022 | |
Alexander Duyck | 85b430b | 2009-10-27 15:50:29 +0000 | [diff] [blame] | 2023 | /* disable queue 0 which is enabled by default on 82575 and 82576 */ |
| 2024 | wr32(E1000_TXDCTL(0), 0); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2025 | |
| 2026 | /* Program the Transmit Control Register */ |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2027 | tctl = rd32(E1000_TCTL); |
| 2028 | tctl &= ~E1000_TCTL_CT; |
| 2029 | tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC | |
| 2030 | (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT); |
| 2031 | |
| 2032 | igb_config_collision_dist(hw); |
| 2033 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2034 | /* Enable transmits */ |
| 2035 | tctl |= E1000_TCTL_EN; |
| 2036 | |
| 2037 | wr32(E1000_TCTL, tctl); |
| 2038 | } |
| 2039 | |
| 2040 | /** |
Alexander Duyck | 85b430b | 2009-10-27 15:50:29 +0000 | [diff] [blame] | 2041 | * igb_configure_tx_ring - Configure transmit ring after Reset |
| 2042 | * @adapter: board private structure |
| 2043 | * @ring: tx ring to configure |
| 2044 | * |
| 2045 | * Configure a transmit ring after a reset. |
| 2046 | **/ |
Alexander Duyck | d7ee5b3 | 2009-10-27 15:54:23 +0000 | [diff] [blame] | 2047 | void igb_configure_tx_ring(struct igb_adapter *adapter, |
| 2048 | struct igb_ring *ring) |
Alexander Duyck | 85b430b | 2009-10-27 15:50:29 +0000 | [diff] [blame] | 2049 | { |
| 2050 | struct e1000_hw *hw = &adapter->hw; |
| 2051 | u32 txdctl; |
| 2052 | u64 tdba = ring->dma; |
| 2053 | int reg_idx = ring->reg_idx; |
| 2054 | |
| 2055 | /* disable the queue */ |
| 2056 | txdctl = rd32(E1000_TXDCTL(reg_idx)); |
| 2057 | wr32(E1000_TXDCTL(reg_idx), |
| 2058 | txdctl & ~E1000_TXDCTL_QUEUE_ENABLE); |
| 2059 | wrfl(); |
| 2060 | mdelay(10); |
| 2061 | |
| 2062 | wr32(E1000_TDLEN(reg_idx), |
| 2063 | ring->count * sizeof(union e1000_adv_tx_desc)); |
| 2064 | wr32(E1000_TDBAL(reg_idx), |
| 2065 | tdba & 0x00000000ffffffffULL); |
| 2066 | wr32(E1000_TDBAH(reg_idx), tdba >> 32); |
| 2067 | |
Alexander Duyck | fce99e3 | 2009-10-27 15:51:27 +0000 | [diff] [blame] | 2068 | ring->head = hw->hw_addr + E1000_TDH(reg_idx); |
| 2069 | ring->tail = hw->hw_addr + E1000_TDT(reg_idx); |
| 2070 | writel(0, ring->head); |
| 2071 | writel(0, ring->tail); |
Alexander Duyck | 85b430b | 2009-10-27 15:50:29 +0000 | [diff] [blame] | 2072 | |
| 2073 | txdctl |= IGB_TX_PTHRESH; |
| 2074 | txdctl |= IGB_TX_HTHRESH << 8; |
| 2075 | txdctl |= IGB_TX_WTHRESH << 16; |
| 2076 | |
| 2077 | txdctl |= E1000_TXDCTL_QUEUE_ENABLE; |
| 2078 | wr32(E1000_TXDCTL(reg_idx), txdctl); |
| 2079 | } |
| 2080 | |
| 2081 | /** |
| 2082 | * igb_configure_tx - Configure transmit Unit after Reset |
| 2083 | * @adapter: board private structure |
| 2084 | * |
| 2085 | * Configure the Tx unit of the MAC after a reset. |
| 2086 | **/ |
| 2087 | static void igb_configure_tx(struct igb_adapter *adapter) |
| 2088 | { |
| 2089 | int i; |
| 2090 | |
| 2091 | for (i = 0; i < adapter->num_tx_queues; i++) |
| 2092 | igb_configure_tx_ring(adapter, &adapter->tx_ring[i]); |
Alexander Duyck | 85b430b | 2009-10-27 15:50:29 +0000 | [diff] [blame] | 2093 | } |
| 2094 | |
| 2095 | /** |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2096 | * igb_setup_rx_resources - allocate Rx resources (Descriptors) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2097 | * @rx_ring: rx descriptor ring (for a specific queue) to setup |
| 2098 | * |
| 2099 | * Returns 0 on success, negative on failure |
| 2100 | **/ |
Alexander Duyck | 8078529 | 2009-10-27 15:51:47 +0000 | [diff] [blame] | 2101 | int igb_setup_rx_resources(struct igb_ring *rx_ring) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2102 | { |
Alexander Duyck | 8078529 | 2009-10-27 15:51:47 +0000 | [diff] [blame] | 2103 | struct pci_dev *pdev = rx_ring->pdev; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2104 | int size, desc_len; |
| 2105 | |
| 2106 | size = sizeof(struct igb_buffer) * rx_ring->count; |
| 2107 | rx_ring->buffer_info = vmalloc(size); |
| 2108 | if (!rx_ring->buffer_info) |
| 2109 | goto err; |
| 2110 | memset(rx_ring->buffer_info, 0, size); |
| 2111 | |
| 2112 | desc_len = sizeof(union e1000_adv_rx_desc); |
| 2113 | |
| 2114 | /* Round up to nearest 4K */ |
| 2115 | rx_ring->size = rx_ring->count * desc_len; |
| 2116 | rx_ring->size = ALIGN(rx_ring->size, 4096); |
| 2117 | |
| 2118 | rx_ring->desc = pci_alloc_consistent(pdev, rx_ring->size, |
| 2119 | &rx_ring->dma); |
| 2120 | |
| 2121 | if (!rx_ring->desc) |
| 2122 | goto err; |
| 2123 | |
| 2124 | rx_ring->next_to_clean = 0; |
| 2125 | rx_ring->next_to_use = 0; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2126 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2127 | return 0; |
| 2128 | |
| 2129 | err: |
| 2130 | vfree(rx_ring->buffer_info); |
Alexander Duyck | 439705e | 2009-10-27 23:49:20 +0000 | [diff] [blame] | 2131 | rx_ring->buffer_info = NULL; |
Alexander Duyck | 8078529 | 2009-10-27 15:51:47 +0000 | [diff] [blame] | 2132 | dev_err(&pdev->dev, "Unable to allocate memory for " |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2133 | "the receive descriptor ring\n"); |
| 2134 | return -ENOMEM; |
| 2135 | } |
| 2136 | |
| 2137 | /** |
| 2138 | * igb_setup_all_rx_resources - wrapper to allocate Rx resources |
| 2139 | * (Descriptors) for all queues |
| 2140 | * @adapter: board private structure |
| 2141 | * |
| 2142 | * Return 0 on success, negative on failure |
| 2143 | **/ |
| 2144 | static int igb_setup_all_rx_resources(struct igb_adapter *adapter) |
| 2145 | { |
Alexander Duyck | 439705e | 2009-10-27 23:49:20 +0000 | [diff] [blame] | 2146 | struct pci_dev *pdev = adapter->pdev; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2147 | int i, err = 0; |
| 2148 | |
| 2149 | for (i = 0; i < adapter->num_rx_queues; i++) { |
Alexander Duyck | 8078529 | 2009-10-27 15:51:47 +0000 | [diff] [blame] | 2150 | err = igb_setup_rx_resources(&adapter->rx_ring[i]); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2151 | if (err) { |
Alexander Duyck | 439705e | 2009-10-27 23:49:20 +0000 | [diff] [blame] | 2152 | dev_err(&pdev->dev, |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2153 | "Allocation for Rx Queue %u failed\n", i); |
| 2154 | for (i--; i >= 0; i--) |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 2155 | igb_free_rx_resources(&adapter->rx_ring[i]); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2156 | break; |
| 2157 | } |
| 2158 | } |
| 2159 | |
| 2160 | return err; |
| 2161 | } |
| 2162 | |
| 2163 | /** |
Alexander Duyck | 06cf266 | 2009-10-27 15:53:25 +0000 | [diff] [blame] | 2164 | * igb_setup_mrqc - configure the multiple receive queue control registers |
| 2165 | * @adapter: Board private structure |
| 2166 | **/ |
| 2167 | static void igb_setup_mrqc(struct igb_adapter *adapter) |
| 2168 | { |
| 2169 | struct e1000_hw *hw = &adapter->hw; |
| 2170 | u32 mrqc, rxcsum; |
| 2171 | u32 j, num_rx_queues, shift = 0, shift2 = 0; |
| 2172 | union e1000_reta { |
| 2173 | u32 dword; |
| 2174 | u8 bytes[4]; |
| 2175 | } reta; |
| 2176 | static const u8 rsshash[40] = { |
| 2177 | 0x6d, 0x5a, 0x56, 0xda, 0x25, 0x5b, 0x0e, 0xc2, 0x41, 0x67, |
| 2178 | 0x25, 0x3d, 0x43, 0xa3, 0x8f, 0xb0, 0xd0, 0xca, 0x2b, 0xcb, |
| 2179 | 0xae, 0x7b, 0x30, 0xb4, 0x77, 0xcb, 0x2d, 0xa3, 0x80, 0x30, |
| 2180 | 0xf2, 0x0c, 0x6a, 0x42, 0xb7, 0x3b, 0xbe, 0xac, 0x01, 0xfa }; |
| 2181 | |
| 2182 | /* Fill out hash function seeds */ |
| 2183 | for (j = 0; j < 10; j++) { |
| 2184 | u32 rsskey = rsshash[(j * 4)]; |
| 2185 | rsskey |= rsshash[(j * 4) + 1] << 8; |
| 2186 | rsskey |= rsshash[(j * 4) + 2] << 16; |
| 2187 | rsskey |= rsshash[(j * 4) + 3] << 24; |
| 2188 | array_wr32(E1000_RSSRK(0), j, rsskey); |
| 2189 | } |
| 2190 | |
| 2191 | num_rx_queues = adapter->num_rx_queues; |
| 2192 | |
| 2193 | if (adapter->vfs_allocated_count) { |
| 2194 | /* 82575 and 82576 supports 2 RSS queues for VMDq */ |
| 2195 | switch (hw->mac.type) { |
| 2196 | case e1000_82576: |
| 2197 | shift = 3; |
| 2198 | num_rx_queues = 2; |
| 2199 | break; |
| 2200 | case e1000_82575: |
| 2201 | shift = 2; |
| 2202 | shift2 = 6; |
| 2203 | default: |
| 2204 | break; |
| 2205 | } |
| 2206 | } else { |
| 2207 | if (hw->mac.type == e1000_82575) |
| 2208 | shift = 6; |
| 2209 | } |
| 2210 | |
| 2211 | for (j = 0; j < (32 * 4); j++) { |
| 2212 | reta.bytes[j & 3] = (j % num_rx_queues) << shift; |
| 2213 | if (shift2) |
| 2214 | reta.bytes[j & 3] |= num_rx_queues << shift2; |
| 2215 | if ((j & 3) == 3) |
| 2216 | wr32(E1000_RETA(j >> 2), reta.dword); |
| 2217 | } |
| 2218 | |
| 2219 | /* |
| 2220 | * Disable raw packet checksumming so that RSS hash is placed in |
| 2221 | * descriptor on writeback. No need to enable TCP/UDP/IP checksum |
| 2222 | * offloads as they are enabled by default |
| 2223 | */ |
| 2224 | rxcsum = rd32(E1000_RXCSUM); |
| 2225 | rxcsum |= E1000_RXCSUM_PCSD; |
| 2226 | |
| 2227 | if (adapter->hw.mac.type >= e1000_82576) |
| 2228 | /* Enable Receive Checksum Offload for SCTP */ |
| 2229 | rxcsum |= E1000_RXCSUM_CRCOFL; |
| 2230 | |
| 2231 | /* Don't need to set TUOFL or IPOFL, they default to 1 */ |
| 2232 | wr32(E1000_RXCSUM, rxcsum); |
| 2233 | |
| 2234 | /* If VMDq is enabled then we set the appropriate mode for that, else |
| 2235 | * we default to RSS so that an RSS hash is calculated per packet even |
| 2236 | * if we are only using one queue */ |
| 2237 | if (adapter->vfs_allocated_count) { |
| 2238 | if (hw->mac.type > e1000_82575) { |
| 2239 | /* Set the default pool for the PF's first queue */ |
| 2240 | u32 vtctl = rd32(E1000_VT_CTL); |
| 2241 | vtctl &= ~(E1000_VT_CTL_DEFAULT_POOL_MASK | |
| 2242 | E1000_VT_CTL_DISABLE_DEF_POOL); |
| 2243 | vtctl |= adapter->vfs_allocated_count << |
| 2244 | E1000_VT_CTL_DEFAULT_POOL_SHIFT; |
| 2245 | wr32(E1000_VT_CTL, vtctl); |
| 2246 | } |
| 2247 | if (adapter->num_rx_queues > 1) |
| 2248 | mrqc = E1000_MRQC_ENABLE_VMDQ_RSS_2Q; |
| 2249 | else |
| 2250 | mrqc = E1000_MRQC_ENABLE_VMDQ; |
| 2251 | } else { |
| 2252 | mrqc = E1000_MRQC_ENABLE_RSS_4Q; |
| 2253 | } |
| 2254 | igb_vmm_control(adapter); |
| 2255 | |
| 2256 | mrqc |= (E1000_MRQC_RSS_FIELD_IPV4 | |
| 2257 | E1000_MRQC_RSS_FIELD_IPV4_TCP); |
| 2258 | mrqc |= (E1000_MRQC_RSS_FIELD_IPV6 | |
| 2259 | E1000_MRQC_RSS_FIELD_IPV6_TCP); |
| 2260 | mrqc |= (E1000_MRQC_RSS_FIELD_IPV4_UDP | |
| 2261 | E1000_MRQC_RSS_FIELD_IPV6_UDP); |
| 2262 | mrqc |= (E1000_MRQC_RSS_FIELD_IPV6_UDP_EX | |
| 2263 | E1000_MRQC_RSS_FIELD_IPV6_TCP_EX); |
| 2264 | |
| 2265 | wr32(E1000_MRQC, mrqc); |
| 2266 | } |
| 2267 | |
| 2268 | /** |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2269 | * igb_setup_rctl - configure the receive control registers |
| 2270 | * @adapter: Board private structure |
| 2271 | **/ |
Alexander Duyck | d7ee5b3 | 2009-10-27 15:54:23 +0000 | [diff] [blame] | 2272 | void igb_setup_rctl(struct igb_adapter *adapter) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2273 | { |
| 2274 | struct e1000_hw *hw = &adapter->hw; |
| 2275 | u32 rctl; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2276 | |
| 2277 | rctl = rd32(E1000_RCTL); |
| 2278 | |
| 2279 | rctl &= ~(3 << E1000_RCTL_MO_SHIFT); |
Alexander Duyck | 69d728b | 2008-11-25 01:04:03 -0800 | [diff] [blame] | 2280 | rctl &= ~(E1000_RCTL_LBM_TCVR | E1000_RCTL_LBM_MAC); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2281 | |
Alexander Duyck | 69d728b | 2008-11-25 01:04:03 -0800 | [diff] [blame] | 2282 | rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | E1000_RCTL_RDMTS_HALF | |
Alexander Duyck | 28b0759 | 2009-02-06 23:20:31 +0000 | [diff] [blame] | 2283 | (hw->mac.mc_filter_type << E1000_RCTL_MO_SHIFT); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2284 | |
Auke Kok | 87cb7e8 | 2008-07-08 15:08:29 -0700 | [diff] [blame] | 2285 | /* |
| 2286 | * enable stripping of CRC. It's unlikely this will break BMC |
| 2287 | * redirection as it did with e1000. Newer features require |
| 2288 | * that the HW strips the CRC. |
Alexander Duyck | 73cd78f | 2009-02-12 18:16:59 +0000 | [diff] [blame] | 2289 | */ |
Auke Kok | 87cb7e8 | 2008-07-08 15:08:29 -0700 | [diff] [blame] | 2290 | rctl |= E1000_RCTL_SECRC; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2291 | |
Alexander Duyck | 9b07f3d3 | 2008-11-25 01:03:26 -0800 | [diff] [blame] | 2292 | /* |
Alexander Duyck | ec54d7d | 2009-01-31 00:52:57 -0800 | [diff] [blame] | 2293 | * disable store bad packets and clear size bits. |
Alexander Duyck | 9b07f3d3 | 2008-11-25 01:03:26 -0800 | [diff] [blame] | 2294 | */ |
Alexander Duyck | ec54d7d | 2009-01-31 00:52:57 -0800 | [diff] [blame] | 2295 | rctl &= ~(E1000_RCTL_SBP | E1000_RCTL_SZ_256); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2296 | |
Alexander Duyck | 6ec43fe | 2009-10-27 15:50:48 +0000 | [diff] [blame] | 2297 | /* enable LPE to prevent packets larger than max_frame_size */ |
| 2298 | rctl |= E1000_RCTL_LPE; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2299 | |
Alexander Duyck | 952f72a | 2009-10-27 15:51:07 +0000 | [diff] [blame] | 2300 | /* disable queue 0 to prevent tail write w/o re-config */ |
| 2301 | wr32(E1000_RXDCTL(0), 0); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2302 | |
Alexander Duyck | e173952 | 2009-02-19 20:39:44 -0800 | [diff] [blame] | 2303 | /* Attention!!! For SR-IOV PF driver operations you must enable |
| 2304 | * queue drop for all VF and PF queues to prevent head of line blocking |
| 2305 | * if an un-trusted VF does not provide descriptors to hardware. |
| 2306 | */ |
| 2307 | if (adapter->vfs_allocated_count) { |
Alexander Duyck | e173952 | 2009-02-19 20:39:44 -0800 | [diff] [blame] | 2308 | /* set all queue drop enable bits */ |
| 2309 | wr32(E1000_QDE, ALL_QUEUES); |
Alexander Duyck | e173952 | 2009-02-19 20:39:44 -0800 | [diff] [blame] | 2310 | } |
| 2311 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2312 | wr32(E1000_RCTL, rctl); |
| 2313 | } |
| 2314 | |
Alexander Duyck | 7d5753f | 2009-10-27 23:47:16 +0000 | [diff] [blame] | 2315 | static inline int igb_set_vf_rlpml(struct igb_adapter *adapter, int size, |
| 2316 | int vfn) |
| 2317 | { |
| 2318 | struct e1000_hw *hw = &adapter->hw; |
| 2319 | u32 vmolr; |
| 2320 | |
| 2321 | /* if it isn't the PF check to see if VFs are enabled and |
| 2322 | * increase the size to support vlan tags */ |
| 2323 | if (vfn < adapter->vfs_allocated_count && |
| 2324 | adapter->vf_data[vfn].vlans_enabled) |
| 2325 | size += VLAN_TAG_SIZE; |
| 2326 | |
| 2327 | vmolr = rd32(E1000_VMOLR(vfn)); |
| 2328 | vmolr &= ~E1000_VMOLR_RLPML_MASK; |
| 2329 | vmolr |= size | E1000_VMOLR_LPE; |
| 2330 | wr32(E1000_VMOLR(vfn), vmolr); |
| 2331 | |
| 2332 | return 0; |
| 2333 | } |
| 2334 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2335 | /** |
Alexander Duyck | e173952 | 2009-02-19 20:39:44 -0800 | [diff] [blame] | 2336 | * igb_rlpml_set - set maximum receive packet size |
| 2337 | * @adapter: board private structure |
| 2338 | * |
| 2339 | * Configure maximum receivable packet size. |
| 2340 | **/ |
| 2341 | static void igb_rlpml_set(struct igb_adapter *adapter) |
| 2342 | { |
| 2343 | u32 max_frame_size = adapter->max_frame_size; |
| 2344 | struct e1000_hw *hw = &adapter->hw; |
| 2345 | u16 pf_id = adapter->vfs_allocated_count; |
| 2346 | |
| 2347 | if (adapter->vlgrp) |
| 2348 | max_frame_size += VLAN_TAG_SIZE; |
| 2349 | |
| 2350 | /* if vfs are enabled we set RLPML to the largest possible request |
| 2351 | * size and set the VMOLR RLPML to the size we need */ |
| 2352 | if (pf_id) { |
| 2353 | igb_set_vf_rlpml(adapter, max_frame_size, pf_id); |
Alexander Duyck | 7d5753f | 2009-10-27 23:47:16 +0000 | [diff] [blame] | 2354 | max_frame_size = MAX_JUMBO_FRAME_SIZE; |
Alexander Duyck | e173952 | 2009-02-19 20:39:44 -0800 | [diff] [blame] | 2355 | } |
| 2356 | |
| 2357 | wr32(E1000_RLPML, max_frame_size); |
| 2358 | } |
| 2359 | |
Alexander Duyck | 7d5753f | 2009-10-27 23:47:16 +0000 | [diff] [blame] | 2360 | static inline void igb_set_vmolr(struct igb_adapter *adapter, int vfn) |
| 2361 | { |
| 2362 | struct e1000_hw *hw = &adapter->hw; |
| 2363 | u32 vmolr; |
| 2364 | |
| 2365 | /* |
| 2366 | * This register exists only on 82576 and newer so if we are older then |
| 2367 | * we should exit and do nothing |
| 2368 | */ |
| 2369 | if (hw->mac.type < e1000_82576) |
| 2370 | return; |
| 2371 | |
| 2372 | vmolr = rd32(E1000_VMOLR(vfn)); |
| 2373 | vmolr |= E1000_VMOLR_AUPE | /* Accept untagged packets */ |
| 2374 | E1000_VMOLR_STRVLAN; /* Strip vlan tags */ |
| 2375 | |
| 2376 | /* clear all bits that might not be set */ |
| 2377 | vmolr &= ~(E1000_VMOLR_BAM | E1000_VMOLR_RSSE); |
| 2378 | |
| 2379 | if (adapter->num_rx_queues > 1 && vfn == adapter->vfs_allocated_count) |
| 2380 | vmolr |= E1000_VMOLR_RSSE; /* enable RSS */ |
| 2381 | /* |
| 2382 | * for VMDq only allow the VFs and pool 0 to accept broadcast and |
| 2383 | * multicast packets |
| 2384 | */ |
| 2385 | if (vfn <= adapter->vfs_allocated_count) |
| 2386 | vmolr |= E1000_VMOLR_BAM; /* Accept broadcast */ |
| 2387 | |
| 2388 | wr32(E1000_VMOLR(vfn), vmolr); |
| 2389 | } |
| 2390 | |
Alexander Duyck | e173952 | 2009-02-19 20:39:44 -0800 | [diff] [blame] | 2391 | /** |
Alexander Duyck | 85b430b | 2009-10-27 15:50:29 +0000 | [diff] [blame] | 2392 | * igb_configure_rx_ring - Configure a receive ring after Reset |
| 2393 | * @adapter: board private structure |
| 2394 | * @ring: receive ring to be configured |
| 2395 | * |
| 2396 | * Configure the Rx unit of the MAC after a reset. |
| 2397 | **/ |
Alexander Duyck | d7ee5b3 | 2009-10-27 15:54:23 +0000 | [diff] [blame] | 2398 | void igb_configure_rx_ring(struct igb_adapter *adapter, |
| 2399 | struct igb_ring *ring) |
Alexander Duyck | 85b430b | 2009-10-27 15:50:29 +0000 | [diff] [blame] | 2400 | { |
| 2401 | struct e1000_hw *hw = &adapter->hw; |
| 2402 | u64 rdba = ring->dma; |
| 2403 | int reg_idx = ring->reg_idx; |
Alexander Duyck | 952f72a | 2009-10-27 15:51:07 +0000 | [diff] [blame] | 2404 | u32 srrctl, rxdctl; |
Alexander Duyck | 85b430b | 2009-10-27 15:50:29 +0000 | [diff] [blame] | 2405 | |
| 2406 | /* disable the queue */ |
| 2407 | rxdctl = rd32(E1000_RXDCTL(reg_idx)); |
| 2408 | wr32(E1000_RXDCTL(reg_idx), |
| 2409 | rxdctl & ~E1000_RXDCTL_QUEUE_ENABLE); |
| 2410 | |
| 2411 | /* Set DMA base address registers */ |
| 2412 | wr32(E1000_RDBAL(reg_idx), |
| 2413 | rdba & 0x00000000ffffffffULL); |
| 2414 | wr32(E1000_RDBAH(reg_idx), rdba >> 32); |
| 2415 | wr32(E1000_RDLEN(reg_idx), |
| 2416 | ring->count * sizeof(union e1000_adv_rx_desc)); |
| 2417 | |
| 2418 | /* initialize head and tail */ |
Alexander Duyck | fce99e3 | 2009-10-27 15:51:27 +0000 | [diff] [blame] | 2419 | ring->head = hw->hw_addr + E1000_RDH(reg_idx); |
| 2420 | ring->tail = hw->hw_addr + E1000_RDT(reg_idx); |
| 2421 | writel(0, ring->head); |
| 2422 | writel(0, ring->tail); |
Alexander Duyck | 85b430b | 2009-10-27 15:50:29 +0000 | [diff] [blame] | 2423 | |
Alexander Duyck | 952f72a | 2009-10-27 15:51:07 +0000 | [diff] [blame] | 2424 | /* set descriptor configuration */ |
Alexander Duyck | 4c84485 | 2009-10-27 15:52:07 +0000 | [diff] [blame] | 2425 | if (ring->rx_buffer_len < IGB_RXBUFFER_1024) { |
| 2426 | srrctl = ALIGN(ring->rx_buffer_len, 64) << |
Alexander Duyck | 952f72a | 2009-10-27 15:51:07 +0000 | [diff] [blame] | 2427 | E1000_SRRCTL_BSIZEHDRSIZE_SHIFT; |
| 2428 | #if (PAGE_SIZE / 2) > IGB_RXBUFFER_16384 |
| 2429 | srrctl |= IGB_RXBUFFER_16384 >> |
| 2430 | E1000_SRRCTL_BSIZEPKT_SHIFT; |
| 2431 | #else |
| 2432 | srrctl |= (PAGE_SIZE / 2) >> |
| 2433 | E1000_SRRCTL_BSIZEPKT_SHIFT; |
| 2434 | #endif |
| 2435 | srrctl |= E1000_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS; |
| 2436 | } else { |
Alexander Duyck | 4c84485 | 2009-10-27 15:52:07 +0000 | [diff] [blame] | 2437 | srrctl = ALIGN(ring->rx_buffer_len, 1024) >> |
Alexander Duyck | 952f72a | 2009-10-27 15:51:07 +0000 | [diff] [blame] | 2438 | E1000_SRRCTL_BSIZEPKT_SHIFT; |
| 2439 | srrctl |= E1000_SRRCTL_DESCTYPE_ADV_ONEBUF; |
| 2440 | } |
| 2441 | |
| 2442 | wr32(E1000_SRRCTL(reg_idx), srrctl); |
| 2443 | |
Alexander Duyck | 7d5753f | 2009-10-27 23:47:16 +0000 | [diff] [blame] | 2444 | /* set filtering for VMDQ pools */ |
| 2445 | igb_set_vmolr(adapter, reg_idx & 0x7); |
| 2446 | |
Alexander Duyck | 85b430b | 2009-10-27 15:50:29 +0000 | [diff] [blame] | 2447 | /* enable receive descriptor fetching */ |
| 2448 | rxdctl = rd32(E1000_RXDCTL(reg_idx)); |
| 2449 | rxdctl |= E1000_RXDCTL_QUEUE_ENABLE; |
| 2450 | rxdctl &= 0xFFF00000; |
| 2451 | rxdctl |= IGB_RX_PTHRESH; |
| 2452 | rxdctl |= IGB_RX_HTHRESH << 8; |
| 2453 | rxdctl |= IGB_RX_WTHRESH << 16; |
| 2454 | wr32(E1000_RXDCTL(reg_idx), rxdctl); |
| 2455 | } |
| 2456 | |
| 2457 | /** |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2458 | * igb_configure_rx - Configure receive Unit after Reset |
| 2459 | * @adapter: board private structure |
| 2460 | * |
| 2461 | * Configure the Rx unit of the MAC after a reset. |
| 2462 | **/ |
| 2463 | static void igb_configure_rx(struct igb_adapter *adapter) |
| 2464 | { |
Hannes Eder | 9107584 | 2009-02-18 19:36:04 -0800 | [diff] [blame] | 2465 | int i; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2466 | |
Alexander Duyck | 68d480c | 2009-10-05 06:33:08 +0000 | [diff] [blame] | 2467 | /* set UTA to appropriate mode */ |
| 2468 | igb_set_uta(adapter); |
| 2469 | |
Alexander Duyck | 26ad917 | 2009-10-05 06:32:49 +0000 | [diff] [blame] | 2470 | /* set the correct pool for the PF default MAC address in entry 0 */ |
| 2471 | igb_rar_set_qsel(adapter, adapter->hw.mac.addr, 0, |
| 2472 | adapter->vfs_allocated_count); |
| 2473 | |
Alexander Duyck | 06cf266 | 2009-10-27 15:53:25 +0000 | [diff] [blame] | 2474 | /* Setup the HW Rx Head and Tail Descriptor Pointers and |
| 2475 | * the Base and Length of the Rx Descriptor Ring */ |
| 2476 | for (i = 0; i < adapter->num_rx_queues; i++) |
| 2477 | igb_configure_rx_ring(adapter, &adapter->rx_ring[i]); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2478 | } |
| 2479 | |
| 2480 | /** |
| 2481 | * igb_free_tx_resources - Free Tx Resources per Queue |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2482 | * @tx_ring: Tx descriptor ring for a specific queue |
| 2483 | * |
| 2484 | * Free all transmit software resources |
| 2485 | **/ |
Alexander Duyck | 68fd991 | 2008-11-20 00:48:10 -0800 | [diff] [blame] | 2486 | void igb_free_tx_resources(struct igb_ring *tx_ring) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2487 | { |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 2488 | igb_clean_tx_ring(tx_ring); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2489 | |
| 2490 | vfree(tx_ring->buffer_info); |
| 2491 | tx_ring->buffer_info = NULL; |
| 2492 | |
Alexander Duyck | 439705e | 2009-10-27 23:49:20 +0000 | [diff] [blame] | 2493 | /* if not set, then don't free */ |
| 2494 | if (!tx_ring->desc) |
| 2495 | return; |
| 2496 | |
Alexander Duyck | 8078529 | 2009-10-27 15:51:47 +0000 | [diff] [blame] | 2497 | pci_free_consistent(tx_ring->pdev, tx_ring->size, |
| 2498 | tx_ring->desc, tx_ring->dma); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2499 | |
| 2500 | tx_ring->desc = NULL; |
| 2501 | } |
| 2502 | |
| 2503 | /** |
| 2504 | * igb_free_all_tx_resources - Free Tx Resources for All Queues |
| 2505 | * @adapter: board private structure |
| 2506 | * |
| 2507 | * Free all transmit software resources |
| 2508 | **/ |
| 2509 | static void igb_free_all_tx_resources(struct igb_adapter *adapter) |
| 2510 | { |
| 2511 | int i; |
| 2512 | |
| 2513 | for (i = 0; i < adapter->num_tx_queues; i++) |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 2514 | igb_free_tx_resources(&adapter->tx_ring[i]); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2515 | } |
| 2516 | |
Alexander Duyck | b1a436c | 2009-10-27 15:54:43 +0000 | [diff] [blame] | 2517 | void igb_unmap_and_free_tx_resource(struct igb_ring *tx_ring, |
| 2518 | struct igb_buffer *buffer_info) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2519 | { |
Alexander Duyck | 65689fe | 2009-03-20 00:17:43 +0000 | [diff] [blame] | 2520 | buffer_info->dma = 0; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2521 | if (buffer_info->skb) { |
Alexander Duyck | 8078529 | 2009-10-27 15:51:47 +0000 | [diff] [blame] | 2522 | skb_dma_unmap(&tx_ring->pdev->dev, |
| 2523 | buffer_info->skb, |
Alexander Duyck | 65689fe | 2009-03-20 00:17:43 +0000 | [diff] [blame] | 2524 | DMA_TO_DEVICE); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2525 | dev_kfree_skb_any(buffer_info->skb); |
| 2526 | buffer_info->skb = NULL; |
| 2527 | } |
| 2528 | buffer_info->time_stamp = 0; |
| 2529 | /* buffer_info must be completely set up in the transmit path */ |
| 2530 | } |
| 2531 | |
| 2532 | /** |
| 2533 | * igb_clean_tx_ring - Free Tx Buffers |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2534 | * @tx_ring: ring to be cleaned |
| 2535 | **/ |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 2536 | static void igb_clean_tx_ring(struct igb_ring *tx_ring) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2537 | { |
| 2538 | struct igb_buffer *buffer_info; |
| 2539 | unsigned long size; |
| 2540 | unsigned int i; |
| 2541 | |
| 2542 | if (!tx_ring->buffer_info) |
| 2543 | return; |
| 2544 | /* Free all the Tx ring sk_buffs */ |
| 2545 | |
| 2546 | for (i = 0; i < tx_ring->count; i++) { |
| 2547 | buffer_info = &tx_ring->buffer_info[i]; |
Alexander Duyck | 8078529 | 2009-10-27 15:51:47 +0000 | [diff] [blame] | 2548 | igb_unmap_and_free_tx_resource(tx_ring, buffer_info); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2549 | } |
| 2550 | |
| 2551 | size = sizeof(struct igb_buffer) * tx_ring->count; |
| 2552 | memset(tx_ring->buffer_info, 0, size); |
| 2553 | |
| 2554 | /* Zero out the descriptor ring */ |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2555 | memset(tx_ring->desc, 0, tx_ring->size); |
| 2556 | |
| 2557 | tx_ring->next_to_use = 0; |
| 2558 | tx_ring->next_to_clean = 0; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2559 | } |
| 2560 | |
| 2561 | /** |
| 2562 | * igb_clean_all_tx_rings - Free Tx Buffers for all queues |
| 2563 | * @adapter: board private structure |
| 2564 | **/ |
| 2565 | static void igb_clean_all_tx_rings(struct igb_adapter *adapter) |
| 2566 | { |
| 2567 | int i; |
| 2568 | |
| 2569 | for (i = 0; i < adapter->num_tx_queues; i++) |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 2570 | igb_clean_tx_ring(&adapter->tx_ring[i]); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2571 | } |
| 2572 | |
| 2573 | /** |
| 2574 | * igb_free_rx_resources - Free Rx Resources |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2575 | * @rx_ring: ring to clean the resources from |
| 2576 | * |
| 2577 | * Free all receive software resources |
| 2578 | **/ |
Alexander Duyck | 68fd991 | 2008-11-20 00:48:10 -0800 | [diff] [blame] | 2579 | void igb_free_rx_resources(struct igb_ring *rx_ring) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2580 | { |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 2581 | igb_clean_rx_ring(rx_ring); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2582 | |
| 2583 | vfree(rx_ring->buffer_info); |
| 2584 | rx_ring->buffer_info = NULL; |
| 2585 | |
Alexander Duyck | 439705e | 2009-10-27 23:49:20 +0000 | [diff] [blame] | 2586 | /* if not set, then don't free */ |
| 2587 | if (!rx_ring->desc) |
| 2588 | return; |
| 2589 | |
Alexander Duyck | 8078529 | 2009-10-27 15:51:47 +0000 | [diff] [blame] | 2590 | pci_free_consistent(rx_ring->pdev, rx_ring->size, |
| 2591 | rx_ring->desc, rx_ring->dma); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2592 | |
| 2593 | rx_ring->desc = NULL; |
| 2594 | } |
| 2595 | |
| 2596 | /** |
| 2597 | * igb_free_all_rx_resources - Free Rx Resources for All Queues |
| 2598 | * @adapter: board private structure |
| 2599 | * |
| 2600 | * Free all receive software resources |
| 2601 | **/ |
| 2602 | static void igb_free_all_rx_resources(struct igb_adapter *adapter) |
| 2603 | { |
| 2604 | int i; |
| 2605 | |
| 2606 | for (i = 0; i < adapter->num_rx_queues; i++) |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 2607 | igb_free_rx_resources(&adapter->rx_ring[i]); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2608 | } |
| 2609 | |
| 2610 | /** |
| 2611 | * igb_clean_rx_ring - Free Rx Buffers per Queue |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2612 | * @rx_ring: ring to free buffers from |
| 2613 | **/ |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 2614 | static void igb_clean_rx_ring(struct igb_ring *rx_ring) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2615 | { |
| 2616 | struct igb_buffer *buffer_info; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2617 | unsigned long size; |
| 2618 | unsigned int i; |
| 2619 | |
| 2620 | if (!rx_ring->buffer_info) |
| 2621 | return; |
Alexander Duyck | 439705e | 2009-10-27 23:49:20 +0000 | [diff] [blame] | 2622 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2623 | /* Free all the Rx ring sk_buffs */ |
| 2624 | for (i = 0; i < rx_ring->count; i++) { |
| 2625 | buffer_info = &rx_ring->buffer_info[i]; |
| 2626 | if (buffer_info->dma) { |
Alexander Duyck | 8078529 | 2009-10-27 15:51:47 +0000 | [diff] [blame] | 2627 | pci_unmap_single(rx_ring->pdev, |
| 2628 | buffer_info->dma, |
Alexander Duyck | 4c84485 | 2009-10-27 15:52:07 +0000 | [diff] [blame] | 2629 | rx_ring->rx_buffer_len, |
Alexander Duyck | 6ec43fe | 2009-10-27 15:50:48 +0000 | [diff] [blame] | 2630 | PCI_DMA_FROMDEVICE); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2631 | buffer_info->dma = 0; |
| 2632 | } |
| 2633 | |
| 2634 | if (buffer_info->skb) { |
| 2635 | dev_kfree_skb(buffer_info->skb); |
| 2636 | buffer_info->skb = NULL; |
| 2637 | } |
Alexander Duyck | 6ec43fe | 2009-10-27 15:50:48 +0000 | [diff] [blame] | 2638 | if (buffer_info->page_dma) { |
Alexander Duyck | 8078529 | 2009-10-27 15:51:47 +0000 | [diff] [blame] | 2639 | pci_unmap_page(rx_ring->pdev, |
| 2640 | buffer_info->page_dma, |
Alexander Duyck | 6ec43fe | 2009-10-27 15:50:48 +0000 | [diff] [blame] | 2641 | PAGE_SIZE / 2, |
| 2642 | PCI_DMA_FROMDEVICE); |
| 2643 | buffer_info->page_dma = 0; |
| 2644 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2645 | if (buffer_info->page) { |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2646 | put_page(buffer_info->page); |
| 2647 | buffer_info->page = NULL; |
Alexander Duyck | bf36c1a | 2008-07-08 15:11:40 -0700 | [diff] [blame] | 2648 | buffer_info->page_offset = 0; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2649 | } |
| 2650 | } |
| 2651 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2652 | size = sizeof(struct igb_buffer) * rx_ring->count; |
| 2653 | memset(rx_ring->buffer_info, 0, size); |
| 2654 | |
| 2655 | /* Zero out the descriptor ring */ |
| 2656 | memset(rx_ring->desc, 0, rx_ring->size); |
| 2657 | |
| 2658 | rx_ring->next_to_clean = 0; |
| 2659 | rx_ring->next_to_use = 0; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2660 | } |
| 2661 | |
| 2662 | /** |
| 2663 | * igb_clean_all_rx_rings - Free Rx Buffers for all queues |
| 2664 | * @adapter: board private structure |
| 2665 | **/ |
| 2666 | static void igb_clean_all_rx_rings(struct igb_adapter *adapter) |
| 2667 | { |
| 2668 | int i; |
| 2669 | |
| 2670 | for (i = 0; i < adapter->num_rx_queues; i++) |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 2671 | igb_clean_rx_ring(&adapter->rx_ring[i]); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2672 | } |
| 2673 | |
| 2674 | /** |
| 2675 | * igb_set_mac - Change the Ethernet Address of the NIC |
| 2676 | * @netdev: network interface device structure |
| 2677 | * @p: pointer to an address structure |
| 2678 | * |
| 2679 | * Returns 0 on success, negative on failure |
| 2680 | **/ |
| 2681 | static int igb_set_mac(struct net_device *netdev, void *p) |
| 2682 | { |
| 2683 | struct igb_adapter *adapter = netdev_priv(netdev); |
Alexander Duyck | 28b0759 | 2009-02-06 23:20:31 +0000 | [diff] [blame] | 2684 | struct e1000_hw *hw = &adapter->hw; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2685 | struct sockaddr *addr = p; |
| 2686 | |
| 2687 | if (!is_valid_ether_addr(addr->sa_data)) |
| 2688 | return -EADDRNOTAVAIL; |
| 2689 | |
| 2690 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); |
Alexander Duyck | 28b0759 | 2009-02-06 23:20:31 +0000 | [diff] [blame] | 2691 | memcpy(hw->mac.addr, addr->sa_data, netdev->addr_len); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2692 | |
Alexander Duyck | 26ad917 | 2009-10-05 06:32:49 +0000 | [diff] [blame] | 2693 | /* set the correct pool for the new PF MAC address in entry 0 */ |
| 2694 | igb_rar_set_qsel(adapter, hw->mac.addr, 0, |
| 2695 | adapter->vfs_allocated_count); |
Alexander Duyck | e173952 | 2009-02-19 20:39:44 -0800 | [diff] [blame] | 2696 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2697 | return 0; |
| 2698 | } |
| 2699 | |
| 2700 | /** |
Alexander Duyck | 68d480c | 2009-10-05 06:33:08 +0000 | [diff] [blame] | 2701 | * igb_write_mc_addr_list - write multicast addresses to MTA |
| 2702 | * @netdev: network interface device structure |
| 2703 | * |
| 2704 | * Writes multicast address list to the MTA hash table. |
| 2705 | * Returns: -ENOMEM on failure |
| 2706 | * 0 on no addresses written |
| 2707 | * X on writing X addresses to MTA |
| 2708 | **/ |
| 2709 | static int igb_write_mc_addr_list(struct net_device *netdev) |
| 2710 | { |
| 2711 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 2712 | struct e1000_hw *hw = &adapter->hw; |
| 2713 | struct dev_mc_list *mc_ptr = netdev->mc_list; |
| 2714 | u8 *mta_list; |
| 2715 | u32 vmolr = 0; |
| 2716 | int i; |
| 2717 | |
| 2718 | if (!netdev->mc_count) { |
| 2719 | /* nothing to program, so clear mc list */ |
| 2720 | igb_update_mc_addr_list(hw, NULL, 0); |
| 2721 | igb_restore_vf_multicasts(adapter); |
| 2722 | return 0; |
| 2723 | } |
| 2724 | |
| 2725 | mta_list = kzalloc(netdev->mc_count * 6, GFP_ATOMIC); |
| 2726 | if (!mta_list) |
| 2727 | return -ENOMEM; |
| 2728 | |
| 2729 | /* set vmolr receive overflow multicast bit */ |
| 2730 | vmolr |= E1000_VMOLR_ROMPE; |
| 2731 | |
| 2732 | /* The shared function expects a packed array of only addresses. */ |
| 2733 | mc_ptr = netdev->mc_list; |
| 2734 | |
| 2735 | for (i = 0; i < netdev->mc_count; i++) { |
| 2736 | if (!mc_ptr) |
| 2737 | break; |
| 2738 | memcpy(mta_list + (i*ETH_ALEN), mc_ptr->dmi_addr, ETH_ALEN); |
| 2739 | mc_ptr = mc_ptr->next; |
| 2740 | } |
| 2741 | igb_update_mc_addr_list(hw, mta_list, i); |
| 2742 | kfree(mta_list); |
| 2743 | |
| 2744 | return netdev->mc_count; |
| 2745 | } |
| 2746 | |
| 2747 | /** |
| 2748 | * igb_write_uc_addr_list - write unicast addresses to RAR table |
| 2749 | * @netdev: network interface device structure |
| 2750 | * |
| 2751 | * Writes unicast address list to the RAR table. |
| 2752 | * Returns: -ENOMEM on failure/insufficient address space |
| 2753 | * 0 on no addresses written |
| 2754 | * X on writing X addresses to the RAR table |
| 2755 | **/ |
| 2756 | static int igb_write_uc_addr_list(struct net_device *netdev) |
| 2757 | { |
| 2758 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 2759 | struct e1000_hw *hw = &adapter->hw; |
| 2760 | unsigned int vfn = adapter->vfs_allocated_count; |
| 2761 | unsigned int rar_entries = hw->mac.rar_entry_count - (vfn + 1); |
| 2762 | int count = 0; |
| 2763 | |
| 2764 | /* return ENOMEM indicating insufficient memory for addresses */ |
| 2765 | if (netdev->uc.count > rar_entries) |
| 2766 | return -ENOMEM; |
| 2767 | |
| 2768 | if (netdev->uc.count && rar_entries) { |
| 2769 | struct netdev_hw_addr *ha; |
| 2770 | list_for_each_entry(ha, &netdev->uc.list, list) { |
| 2771 | if (!rar_entries) |
| 2772 | break; |
| 2773 | igb_rar_set_qsel(adapter, ha->addr, |
| 2774 | rar_entries--, |
| 2775 | vfn); |
| 2776 | count++; |
| 2777 | } |
| 2778 | } |
| 2779 | /* write the addresses in reverse order to avoid write combining */ |
| 2780 | for (; rar_entries > 0 ; rar_entries--) { |
| 2781 | wr32(E1000_RAH(rar_entries), 0); |
| 2782 | wr32(E1000_RAL(rar_entries), 0); |
| 2783 | } |
| 2784 | wrfl(); |
| 2785 | |
| 2786 | return count; |
| 2787 | } |
| 2788 | |
| 2789 | /** |
Alexander Duyck | ff41f8d | 2009-09-03 14:48:56 +0000 | [diff] [blame] | 2790 | * igb_set_rx_mode - Secondary Unicast, Multicast and Promiscuous mode set |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2791 | * @netdev: network interface device structure |
| 2792 | * |
Alexander Duyck | ff41f8d | 2009-09-03 14:48:56 +0000 | [diff] [blame] | 2793 | * The set_rx_mode entry point is called whenever the unicast or multicast |
| 2794 | * address lists or the network interface flags are updated. This routine is |
| 2795 | * responsible for configuring the hardware for proper unicast, multicast, |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2796 | * promiscuous mode, and all-multi behavior. |
| 2797 | **/ |
Alexander Duyck | ff41f8d | 2009-09-03 14:48:56 +0000 | [diff] [blame] | 2798 | static void igb_set_rx_mode(struct net_device *netdev) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2799 | { |
| 2800 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 2801 | struct e1000_hw *hw = &adapter->hw; |
Alexander Duyck | 68d480c | 2009-10-05 06:33:08 +0000 | [diff] [blame] | 2802 | unsigned int vfn = adapter->vfs_allocated_count; |
| 2803 | u32 rctl, vmolr = 0; |
| 2804 | int count; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2805 | |
| 2806 | /* Check for Promiscuous and All Multicast modes */ |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2807 | rctl = rd32(E1000_RCTL); |
| 2808 | |
Alexander Duyck | 68d480c | 2009-10-05 06:33:08 +0000 | [diff] [blame] | 2809 | /* clear the effected bits */ |
| 2810 | rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE | E1000_RCTL_VFE); |
| 2811 | |
Patrick McHardy | 746b9f0 | 2008-07-16 20:15:45 -0700 | [diff] [blame] | 2812 | if (netdev->flags & IFF_PROMISC) { |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2813 | rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE); |
Alexander Duyck | 68d480c | 2009-10-05 06:33:08 +0000 | [diff] [blame] | 2814 | vmolr |= (E1000_VMOLR_ROPE | E1000_VMOLR_MPME); |
Patrick McHardy | 746b9f0 | 2008-07-16 20:15:45 -0700 | [diff] [blame] | 2815 | } else { |
Alexander Duyck | 68d480c | 2009-10-05 06:33:08 +0000 | [diff] [blame] | 2816 | if (netdev->flags & IFF_ALLMULTI) { |
Patrick McHardy | 746b9f0 | 2008-07-16 20:15:45 -0700 | [diff] [blame] | 2817 | rctl |= E1000_RCTL_MPE; |
Alexander Duyck | 68d480c | 2009-10-05 06:33:08 +0000 | [diff] [blame] | 2818 | vmolr |= E1000_VMOLR_MPME; |
| 2819 | } else { |
| 2820 | /* |
| 2821 | * Write addresses to the MTA, if the attempt fails |
| 2822 | * then we should just turn on promiscous mode so |
| 2823 | * that we can at least receive multicast traffic |
| 2824 | */ |
| 2825 | count = igb_write_mc_addr_list(netdev); |
| 2826 | if (count < 0) { |
| 2827 | rctl |= E1000_RCTL_MPE; |
| 2828 | vmolr |= E1000_VMOLR_MPME; |
| 2829 | } else if (count) { |
| 2830 | vmolr |= E1000_VMOLR_ROMPE; |
| 2831 | } |
| 2832 | } |
| 2833 | /* |
| 2834 | * Write addresses to available RAR registers, if there is not |
| 2835 | * sufficient space to store all the addresses then enable |
| 2836 | * unicast promiscous mode |
| 2837 | */ |
| 2838 | count = igb_write_uc_addr_list(netdev); |
| 2839 | if (count < 0) { |
Alexander Duyck | ff41f8d | 2009-09-03 14:48:56 +0000 | [diff] [blame] | 2840 | rctl |= E1000_RCTL_UPE; |
Alexander Duyck | 68d480c | 2009-10-05 06:33:08 +0000 | [diff] [blame] | 2841 | vmolr |= E1000_VMOLR_ROPE; |
| 2842 | } |
Patrick McHardy | 78ed11a | 2008-07-16 20:16:14 -0700 | [diff] [blame] | 2843 | rctl |= E1000_RCTL_VFE; |
Patrick McHardy | 746b9f0 | 2008-07-16 20:15:45 -0700 | [diff] [blame] | 2844 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2845 | wr32(E1000_RCTL, rctl); |
| 2846 | |
Alexander Duyck | 68d480c | 2009-10-05 06:33:08 +0000 | [diff] [blame] | 2847 | /* |
| 2848 | * In order to support SR-IOV and eventually VMDq it is necessary to set |
| 2849 | * the VMOLR to enable the appropriate modes. Without this workaround |
| 2850 | * we will have issues with VLAN tag stripping not being done for frames |
| 2851 | * that are only arriving because we are the default pool |
| 2852 | */ |
| 2853 | if (hw->mac.type < e1000_82576) |
Alexander Duyck | 28fc06f | 2009-07-23 18:08:54 +0000 | [diff] [blame] | 2854 | return; |
Alexander Duyck | 28fc06f | 2009-07-23 18:08:54 +0000 | [diff] [blame] | 2855 | |
Alexander Duyck | 68d480c | 2009-10-05 06:33:08 +0000 | [diff] [blame] | 2856 | vmolr |= rd32(E1000_VMOLR(vfn)) & |
| 2857 | ~(E1000_VMOLR_ROPE | E1000_VMOLR_MPME | E1000_VMOLR_ROMPE); |
| 2858 | wr32(E1000_VMOLR(vfn), vmolr); |
Alexander Duyck | 28fc06f | 2009-07-23 18:08:54 +0000 | [diff] [blame] | 2859 | igb_restore_vf_multicasts(adapter); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2860 | } |
| 2861 | |
| 2862 | /* Need to wait a few seconds after link up to get diagnostic information from |
| 2863 | * the phy */ |
| 2864 | static void igb_update_phy_info(unsigned long data) |
| 2865 | { |
| 2866 | struct igb_adapter *adapter = (struct igb_adapter *) data; |
Alexander Duyck | f5f4cf0 | 2008-11-21 21:30:24 -0800 | [diff] [blame] | 2867 | igb_get_phy_info(&adapter->hw); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2868 | } |
| 2869 | |
| 2870 | /** |
Alexander Duyck | 4d6b725 | 2009-02-06 23:16:24 +0000 | [diff] [blame] | 2871 | * igb_has_link - check shared code for link and determine up/down |
| 2872 | * @adapter: pointer to driver private info |
| 2873 | **/ |
| 2874 | static bool igb_has_link(struct igb_adapter *adapter) |
| 2875 | { |
| 2876 | struct e1000_hw *hw = &adapter->hw; |
| 2877 | bool link_active = false; |
| 2878 | s32 ret_val = 0; |
| 2879 | |
| 2880 | /* get_link_status is set on LSC (link status) interrupt or |
| 2881 | * rx sequence error interrupt. get_link_status will stay |
| 2882 | * false until the e1000_check_for_link establishes link |
| 2883 | * for copper adapters ONLY |
| 2884 | */ |
| 2885 | switch (hw->phy.media_type) { |
| 2886 | case e1000_media_type_copper: |
| 2887 | if (hw->mac.get_link_status) { |
| 2888 | ret_val = hw->mac.ops.check_for_link(hw); |
| 2889 | link_active = !hw->mac.get_link_status; |
| 2890 | } else { |
| 2891 | link_active = true; |
| 2892 | } |
| 2893 | break; |
Alexander Duyck | 4d6b725 | 2009-02-06 23:16:24 +0000 | [diff] [blame] | 2894 | case e1000_media_type_internal_serdes: |
| 2895 | ret_val = hw->mac.ops.check_for_link(hw); |
| 2896 | link_active = hw->mac.serdes_has_link; |
| 2897 | break; |
| 2898 | default: |
| 2899 | case e1000_media_type_unknown: |
| 2900 | break; |
| 2901 | } |
| 2902 | |
| 2903 | return link_active; |
| 2904 | } |
| 2905 | |
| 2906 | /** |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2907 | * igb_watchdog - Timer Call-back |
| 2908 | * @data: pointer to adapter cast into an unsigned long |
| 2909 | **/ |
| 2910 | static void igb_watchdog(unsigned long data) |
| 2911 | { |
| 2912 | struct igb_adapter *adapter = (struct igb_adapter *)data; |
| 2913 | /* Do the rest outside of interrupt context */ |
| 2914 | schedule_work(&adapter->watchdog_task); |
| 2915 | } |
| 2916 | |
| 2917 | static void igb_watchdog_task(struct work_struct *work) |
| 2918 | { |
| 2919 | struct igb_adapter *adapter = container_of(work, |
| 2920 | struct igb_adapter, watchdog_task); |
| 2921 | struct e1000_hw *hw = &adapter->hw; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2922 | struct net_device *netdev = adapter->netdev; |
| 2923 | struct igb_ring *tx_ring = adapter->tx_ring; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2924 | u32 link; |
Alexander Duyck | 7a6ea55 | 2008-08-26 04:25:03 -0700 | [diff] [blame] | 2925 | int i; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2926 | |
Alexander Duyck | 4d6b725 | 2009-02-06 23:16:24 +0000 | [diff] [blame] | 2927 | link = igb_has_link(adapter); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2928 | if (link) { |
| 2929 | if (!netif_carrier_ok(netdev)) { |
| 2930 | u32 ctrl; |
| 2931 | hw->mac.ops.get_speed_and_duplex(&adapter->hw, |
| 2932 | &adapter->link_speed, |
| 2933 | &adapter->link_duplex); |
| 2934 | |
| 2935 | ctrl = rd32(E1000_CTRL); |
Alexander Duyck | 527d47c | 2008-11-27 00:21:39 -0800 | [diff] [blame] | 2936 | /* Links status message must follow this format */ |
| 2937 | printk(KERN_INFO "igb: %s NIC Link is Up %d Mbps %s, " |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2938 | "Flow Control: %s\n", |
Alexander Duyck | 527d47c | 2008-11-27 00:21:39 -0800 | [diff] [blame] | 2939 | netdev->name, |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2940 | adapter->link_speed, |
| 2941 | adapter->link_duplex == FULL_DUPLEX ? |
| 2942 | "Full Duplex" : "Half Duplex", |
| 2943 | ((ctrl & E1000_CTRL_TFCE) && (ctrl & |
| 2944 | E1000_CTRL_RFCE)) ? "RX/TX" : ((ctrl & |
| 2945 | E1000_CTRL_RFCE) ? "RX" : ((ctrl & |
| 2946 | E1000_CTRL_TFCE) ? "TX" : "None"))); |
| 2947 | |
| 2948 | /* tweak tx_queue_len according to speed/duplex and |
| 2949 | * adjust the timeout factor */ |
| 2950 | netdev->tx_queue_len = adapter->tx_queue_len; |
| 2951 | adapter->tx_timeout_factor = 1; |
| 2952 | switch (adapter->link_speed) { |
| 2953 | case SPEED_10: |
| 2954 | netdev->tx_queue_len = 10; |
| 2955 | adapter->tx_timeout_factor = 14; |
| 2956 | break; |
| 2957 | case SPEED_100: |
| 2958 | netdev->tx_queue_len = 100; |
| 2959 | /* maybe add some timeout factor ? */ |
| 2960 | break; |
| 2961 | } |
| 2962 | |
| 2963 | netif_carrier_on(netdev); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2964 | |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 2965 | igb_ping_all_vfs(adapter); |
| 2966 | |
Alexander Duyck | 4b1a987 | 2009-02-06 23:19:50 +0000 | [diff] [blame] | 2967 | /* link state has changed, schedule phy info update */ |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2968 | if (!test_bit(__IGB_DOWN, &adapter->state)) |
| 2969 | mod_timer(&adapter->phy_info_timer, |
| 2970 | round_jiffies(jiffies + 2 * HZ)); |
| 2971 | } |
| 2972 | } else { |
| 2973 | if (netif_carrier_ok(netdev)) { |
| 2974 | adapter->link_speed = 0; |
| 2975 | adapter->link_duplex = 0; |
Alexander Duyck | 527d47c | 2008-11-27 00:21:39 -0800 | [diff] [blame] | 2976 | /* Links status message must follow this format */ |
| 2977 | printk(KERN_INFO "igb: %s NIC Link is Down\n", |
| 2978 | netdev->name); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2979 | netif_carrier_off(netdev); |
Alexander Duyck | 4b1a987 | 2009-02-06 23:19:50 +0000 | [diff] [blame] | 2980 | |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 2981 | igb_ping_all_vfs(adapter); |
| 2982 | |
Alexander Duyck | 4b1a987 | 2009-02-06 23:19:50 +0000 | [diff] [blame] | 2983 | /* link state has changed, schedule phy info update */ |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2984 | if (!test_bit(__IGB_DOWN, &adapter->state)) |
| 2985 | mod_timer(&adapter->phy_info_timer, |
| 2986 | round_jiffies(jiffies + 2 * HZ)); |
| 2987 | } |
| 2988 | } |
| 2989 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2990 | igb_update_stats(adapter); |
Alexander Duyck | 645a3ab | 2009-10-27 23:50:18 +0000 | [diff] [blame^] | 2991 | igb_update_adaptive(hw); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2992 | |
| 2993 | if (!netif_carrier_ok(netdev)) { |
Alexander Duyck | c493ea4 | 2009-03-20 00:16:50 +0000 | [diff] [blame] | 2994 | if (igb_desc_unused(tx_ring) + 1 < tx_ring->count) { |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 2995 | /* We've lost link, so the controller stops DMA, |
| 2996 | * but we've got queued Tx work that's never going |
| 2997 | * to get done, so reset controller to flush Tx. |
| 2998 | * (Do the reset outside of interrupt context). */ |
| 2999 | adapter->tx_timeout_count++; |
| 3000 | schedule_work(&adapter->reset_task); |
Jesse Brandeburg | c2d5ab4 | 2009-05-07 11:07:35 +0000 | [diff] [blame] | 3001 | /* return immediately since reset is imminent */ |
| 3002 | return; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3003 | } |
| 3004 | } |
| 3005 | |
Alexander Duyck | f7ba205 | 2009-10-27 23:48:51 +0000 | [diff] [blame] | 3006 | /* Force detection of hung controller every watchdog period */ |
| 3007 | for (i = 0; i < adapter->num_tx_queues; i++) |
| 3008 | adapter->tx_ring[i].detect_tx_hung = true; |
| 3009 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3010 | /* Cause software interrupt to ensure rx ring is cleaned */ |
Alexander Duyck | 7a6ea55 | 2008-08-26 04:25:03 -0700 | [diff] [blame] | 3011 | if (adapter->msix_entries) { |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 3012 | u32 eics = 0; |
| 3013 | for (i = 0; i < adapter->num_q_vectors; i++) { |
| 3014 | struct igb_q_vector *q_vector = adapter->q_vector[i]; |
| 3015 | eics |= q_vector->eims_value; |
| 3016 | } |
Alexander Duyck | 7a6ea55 | 2008-08-26 04:25:03 -0700 | [diff] [blame] | 3017 | wr32(E1000_EICS, eics); |
| 3018 | } else { |
| 3019 | wr32(E1000_ICS, E1000_ICS_RXDMT0); |
| 3020 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3021 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3022 | /* Reset the timer */ |
| 3023 | if (!test_bit(__IGB_DOWN, &adapter->state)) |
| 3024 | mod_timer(&adapter->watchdog_timer, |
| 3025 | round_jiffies(jiffies + 2 * HZ)); |
| 3026 | } |
| 3027 | |
| 3028 | enum latency_range { |
| 3029 | lowest_latency = 0, |
| 3030 | low_latency = 1, |
| 3031 | bulk_latency = 2, |
| 3032 | latency_invalid = 255 |
| 3033 | }; |
| 3034 | |
Alexander Duyck | 6eb5a7f | 2008-07-08 15:14:44 -0700 | [diff] [blame] | 3035 | /** |
| 3036 | * igb_update_ring_itr - update the dynamic ITR value based on packet size |
| 3037 | * |
| 3038 | * Stores a new ITR value based on strictly on packet size. This |
| 3039 | * algorithm is less sophisticated than that used in igb_update_itr, |
| 3040 | * due to the difficulty of synchronizing statistics across multiple |
| 3041 | * receive rings. The divisors and thresholds used by this fuction |
| 3042 | * were determined based on theoretical maximum wire speed and testing |
| 3043 | * data, in order to minimize response time while increasing bulk |
| 3044 | * throughput. |
| 3045 | * This functionality is controlled by the InterruptThrottleRate module |
| 3046 | * parameter (see igb_param.c) |
| 3047 | * NOTE: This function is called only when operating in a multiqueue |
| 3048 | * receive environment. |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 3049 | * @q_vector: pointer to q_vector |
Alexander Duyck | 6eb5a7f | 2008-07-08 15:14:44 -0700 | [diff] [blame] | 3050 | **/ |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 3051 | static void igb_update_ring_itr(struct igb_q_vector *q_vector) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3052 | { |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 3053 | int new_val = q_vector->itr_val; |
Alexander Duyck | 6eb5a7f | 2008-07-08 15:14:44 -0700 | [diff] [blame] | 3054 | int avg_wire_size = 0; |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 3055 | struct igb_adapter *adapter = q_vector->adapter; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3056 | |
Alexander Duyck | 6eb5a7f | 2008-07-08 15:14:44 -0700 | [diff] [blame] | 3057 | /* For non-gigabit speeds, just fix the interrupt rate at 4000 |
| 3058 | * ints/sec - ITR timer value of 120 ticks. |
| 3059 | */ |
| 3060 | if (adapter->link_speed != SPEED_1000) { |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 3061 | new_val = 976; |
Alexander Duyck | 6eb5a7f | 2008-07-08 15:14:44 -0700 | [diff] [blame] | 3062 | goto set_itr_val; |
| 3063 | } |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 3064 | |
| 3065 | if (q_vector->rx_ring && q_vector->rx_ring->total_packets) { |
| 3066 | struct igb_ring *ring = q_vector->rx_ring; |
| 3067 | avg_wire_size = ring->total_bytes / ring->total_packets; |
| 3068 | } |
| 3069 | |
| 3070 | if (q_vector->tx_ring && q_vector->tx_ring->total_packets) { |
| 3071 | struct igb_ring *ring = q_vector->tx_ring; |
| 3072 | avg_wire_size = max_t(u32, avg_wire_size, |
| 3073 | (ring->total_bytes / |
| 3074 | ring->total_packets)); |
| 3075 | } |
| 3076 | |
| 3077 | /* if avg_wire_size isn't set no work was done */ |
| 3078 | if (!avg_wire_size) |
| 3079 | goto clear_counts; |
Alexander Duyck | 6eb5a7f | 2008-07-08 15:14:44 -0700 | [diff] [blame] | 3080 | |
| 3081 | /* Add 24 bytes to size to account for CRC, preamble, and gap */ |
| 3082 | avg_wire_size += 24; |
| 3083 | |
| 3084 | /* Don't starve jumbo frames */ |
| 3085 | avg_wire_size = min(avg_wire_size, 3000); |
| 3086 | |
| 3087 | /* Give a little boost to mid-size frames */ |
| 3088 | if ((avg_wire_size > 300) && (avg_wire_size < 1200)) |
| 3089 | new_val = avg_wire_size / 3; |
| 3090 | else |
| 3091 | new_val = avg_wire_size / 2; |
| 3092 | |
| 3093 | set_itr_val: |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 3094 | if (new_val != q_vector->itr_val) { |
| 3095 | q_vector->itr_val = new_val; |
| 3096 | q_vector->set_itr = 1; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3097 | } |
Alexander Duyck | 6eb5a7f | 2008-07-08 15:14:44 -0700 | [diff] [blame] | 3098 | clear_counts: |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 3099 | if (q_vector->rx_ring) { |
| 3100 | q_vector->rx_ring->total_bytes = 0; |
| 3101 | q_vector->rx_ring->total_packets = 0; |
| 3102 | } |
| 3103 | if (q_vector->tx_ring) { |
| 3104 | q_vector->tx_ring->total_bytes = 0; |
| 3105 | q_vector->tx_ring->total_packets = 0; |
| 3106 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3107 | } |
| 3108 | |
| 3109 | /** |
| 3110 | * igb_update_itr - update the dynamic ITR value based on statistics |
| 3111 | * Stores a new ITR value based on packets and byte |
| 3112 | * counts during the last interrupt. The advantage of per interrupt |
| 3113 | * computation is faster updates and more accurate ITR for the current |
| 3114 | * traffic pattern. Constants in this function were computed |
| 3115 | * based on theoretical maximum wire speed and thresholds were set based |
| 3116 | * on testing data as well as attempting to minimize response time |
| 3117 | * while increasing bulk throughput. |
| 3118 | * this functionality is controlled by the InterruptThrottleRate module |
| 3119 | * parameter (see igb_param.c) |
| 3120 | * NOTE: These calculations are only valid when operating in a single- |
| 3121 | * queue environment. |
| 3122 | * @adapter: pointer to adapter |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 3123 | * @itr_setting: current q_vector->itr_val |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3124 | * @packets: the number of packets during this measurement interval |
| 3125 | * @bytes: the number of bytes during this measurement interval |
| 3126 | **/ |
| 3127 | static unsigned int igb_update_itr(struct igb_adapter *adapter, u16 itr_setting, |
| 3128 | int packets, int bytes) |
| 3129 | { |
| 3130 | unsigned int retval = itr_setting; |
| 3131 | |
| 3132 | if (packets == 0) |
| 3133 | goto update_itr_done; |
| 3134 | |
| 3135 | switch (itr_setting) { |
| 3136 | case lowest_latency: |
| 3137 | /* handle TSO and jumbo frames */ |
| 3138 | if (bytes/packets > 8000) |
| 3139 | retval = bulk_latency; |
| 3140 | else if ((packets < 5) && (bytes > 512)) |
| 3141 | retval = low_latency; |
| 3142 | break; |
| 3143 | case low_latency: /* 50 usec aka 20000 ints/s */ |
| 3144 | if (bytes > 10000) { |
| 3145 | /* this if handles the TSO accounting */ |
| 3146 | if (bytes/packets > 8000) { |
| 3147 | retval = bulk_latency; |
| 3148 | } else if ((packets < 10) || ((bytes/packets) > 1200)) { |
| 3149 | retval = bulk_latency; |
| 3150 | } else if ((packets > 35)) { |
| 3151 | retval = lowest_latency; |
| 3152 | } |
| 3153 | } else if (bytes/packets > 2000) { |
| 3154 | retval = bulk_latency; |
| 3155 | } else if (packets <= 2 && bytes < 512) { |
| 3156 | retval = lowest_latency; |
| 3157 | } |
| 3158 | break; |
| 3159 | case bulk_latency: /* 250 usec aka 4000 ints/s */ |
| 3160 | if (bytes > 25000) { |
| 3161 | if (packets > 35) |
| 3162 | retval = low_latency; |
Alexander Duyck | 1e5c3d2 | 2009-02-12 18:17:21 +0000 | [diff] [blame] | 3163 | } else if (bytes < 1500) { |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3164 | retval = low_latency; |
| 3165 | } |
| 3166 | break; |
| 3167 | } |
| 3168 | |
| 3169 | update_itr_done: |
| 3170 | return retval; |
| 3171 | } |
| 3172 | |
Alexander Duyck | 6eb5a7f | 2008-07-08 15:14:44 -0700 | [diff] [blame] | 3173 | static void igb_set_itr(struct igb_adapter *adapter) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3174 | { |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 3175 | struct igb_q_vector *q_vector = adapter->q_vector[0]; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3176 | u16 current_itr; |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 3177 | u32 new_itr = q_vector->itr_val; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3178 | |
| 3179 | /* for non-gigabit speeds, just fix the interrupt rate at 4000 */ |
| 3180 | if (adapter->link_speed != SPEED_1000) { |
| 3181 | current_itr = 0; |
| 3182 | new_itr = 4000; |
| 3183 | goto set_itr_now; |
| 3184 | } |
| 3185 | |
| 3186 | adapter->rx_itr = igb_update_itr(adapter, |
| 3187 | adapter->rx_itr, |
| 3188 | adapter->rx_ring->total_packets, |
| 3189 | adapter->rx_ring->total_bytes); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3190 | |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 3191 | adapter->tx_itr = igb_update_itr(adapter, |
| 3192 | adapter->tx_itr, |
| 3193 | adapter->tx_ring->total_packets, |
| 3194 | adapter->tx_ring->total_bytes); |
| 3195 | current_itr = max(adapter->rx_itr, adapter->tx_itr); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3196 | |
Alexander Duyck | 6eb5a7f | 2008-07-08 15:14:44 -0700 | [diff] [blame] | 3197 | /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
Alexander Duyck | 4fc82ad | 2009-10-27 23:45:42 +0000 | [diff] [blame] | 3198 | if (adapter->rx_itr_setting == 3 && current_itr == lowest_latency) |
Alexander Duyck | 6eb5a7f | 2008-07-08 15:14:44 -0700 | [diff] [blame] | 3199 | current_itr = low_latency; |
| 3200 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3201 | switch (current_itr) { |
| 3202 | /* counts and packets in update_itr are dependent on these numbers */ |
| 3203 | case lowest_latency: |
Alexander Duyck | 78b1f607 | 2009-04-23 11:20:29 +0000 | [diff] [blame] | 3204 | new_itr = 56; /* aka 70,000 ints/sec */ |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3205 | break; |
| 3206 | case low_latency: |
Alexander Duyck | 78b1f607 | 2009-04-23 11:20:29 +0000 | [diff] [blame] | 3207 | new_itr = 196; /* aka 20,000 ints/sec */ |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3208 | break; |
| 3209 | case bulk_latency: |
Alexander Duyck | 78b1f607 | 2009-04-23 11:20:29 +0000 | [diff] [blame] | 3210 | new_itr = 980; /* aka 4,000 ints/sec */ |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3211 | break; |
| 3212 | default: |
| 3213 | break; |
| 3214 | } |
| 3215 | |
| 3216 | set_itr_now: |
Alexander Duyck | 6eb5a7f | 2008-07-08 15:14:44 -0700 | [diff] [blame] | 3217 | adapter->rx_ring->total_bytes = 0; |
| 3218 | adapter->rx_ring->total_packets = 0; |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 3219 | adapter->tx_ring->total_bytes = 0; |
| 3220 | adapter->tx_ring->total_packets = 0; |
Alexander Duyck | 6eb5a7f | 2008-07-08 15:14:44 -0700 | [diff] [blame] | 3221 | |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 3222 | if (new_itr != q_vector->itr_val) { |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3223 | /* this attempts to bias the interrupt rate towards Bulk |
| 3224 | * by adding intermediate steps when interrupt rate is |
| 3225 | * increasing */ |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 3226 | new_itr = new_itr > q_vector->itr_val ? |
| 3227 | max((new_itr * q_vector->itr_val) / |
| 3228 | (new_itr + (q_vector->itr_val >> 2)), |
| 3229 | new_itr) : |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3230 | new_itr; |
| 3231 | /* Don't write the value here; it resets the adapter's |
| 3232 | * internal timer, and causes us to delay far longer than |
| 3233 | * we should between interrupts. Instead, we write the ITR |
| 3234 | * value at the beginning of the next interrupt so the timing |
| 3235 | * ends up being correct. |
| 3236 | */ |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 3237 | q_vector->itr_val = new_itr; |
| 3238 | q_vector->set_itr = 1; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3239 | } |
| 3240 | |
| 3241 | return; |
| 3242 | } |
| 3243 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3244 | #define IGB_TX_FLAGS_CSUM 0x00000001 |
| 3245 | #define IGB_TX_FLAGS_VLAN 0x00000002 |
| 3246 | #define IGB_TX_FLAGS_TSO 0x00000004 |
| 3247 | #define IGB_TX_FLAGS_IPV4 0x00000008 |
Patrick Ohly | 33af6bc | 2009-02-12 05:03:43 +0000 | [diff] [blame] | 3248 | #define IGB_TX_FLAGS_TSTAMP 0x00000010 |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3249 | #define IGB_TX_FLAGS_VLAN_MASK 0xffff0000 |
| 3250 | #define IGB_TX_FLAGS_VLAN_SHIFT 16 |
| 3251 | |
Alexander Duyck | 85ad76b | 2009-10-27 15:52:46 +0000 | [diff] [blame] | 3252 | static inline int igb_tso_adv(struct igb_ring *tx_ring, |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3253 | struct sk_buff *skb, u32 tx_flags, u8 *hdr_len) |
| 3254 | { |
| 3255 | struct e1000_adv_tx_context_desc *context_desc; |
| 3256 | unsigned int i; |
| 3257 | int err; |
| 3258 | struct igb_buffer *buffer_info; |
| 3259 | u32 info = 0, tu_cmd = 0; |
| 3260 | u32 mss_l4len_idx, l4len; |
| 3261 | *hdr_len = 0; |
| 3262 | |
| 3263 | if (skb_header_cloned(skb)) { |
| 3264 | err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); |
| 3265 | if (err) |
| 3266 | return err; |
| 3267 | } |
| 3268 | |
| 3269 | l4len = tcp_hdrlen(skb); |
| 3270 | *hdr_len += l4len; |
| 3271 | |
| 3272 | if (skb->protocol == htons(ETH_P_IP)) { |
| 3273 | struct iphdr *iph = ip_hdr(skb); |
| 3274 | iph->tot_len = 0; |
| 3275 | iph->check = 0; |
| 3276 | tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, |
| 3277 | iph->daddr, 0, |
| 3278 | IPPROTO_TCP, |
| 3279 | 0); |
| 3280 | } else if (skb_shinfo(skb)->gso_type == SKB_GSO_TCPV6) { |
| 3281 | ipv6_hdr(skb)->payload_len = 0; |
| 3282 | tcp_hdr(skb)->check = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, |
| 3283 | &ipv6_hdr(skb)->daddr, |
| 3284 | 0, IPPROTO_TCP, 0); |
| 3285 | } |
| 3286 | |
| 3287 | i = tx_ring->next_to_use; |
| 3288 | |
| 3289 | buffer_info = &tx_ring->buffer_info[i]; |
| 3290 | context_desc = E1000_TX_CTXTDESC_ADV(*tx_ring, i); |
| 3291 | /* VLAN MACLEN IPLEN */ |
| 3292 | if (tx_flags & IGB_TX_FLAGS_VLAN) |
| 3293 | info |= (tx_flags & IGB_TX_FLAGS_VLAN_MASK); |
| 3294 | info |= (skb_network_offset(skb) << E1000_ADVTXD_MACLEN_SHIFT); |
| 3295 | *hdr_len += skb_network_offset(skb); |
| 3296 | info |= skb_network_header_len(skb); |
| 3297 | *hdr_len += skb_network_header_len(skb); |
| 3298 | context_desc->vlan_macip_lens = cpu_to_le32(info); |
| 3299 | |
| 3300 | /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */ |
| 3301 | tu_cmd |= (E1000_TXD_CMD_DEXT | E1000_ADVTXD_DTYP_CTXT); |
| 3302 | |
| 3303 | if (skb->protocol == htons(ETH_P_IP)) |
| 3304 | tu_cmd |= E1000_ADVTXD_TUCMD_IPV4; |
| 3305 | tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP; |
| 3306 | |
| 3307 | context_desc->type_tucmd_mlhl = cpu_to_le32(tu_cmd); |
| 3308 | |
| 3309 | /* MSS L4LEN IDX */ |
| 3310 | mss_l4len_idx = (skb_shinfo(skb)->gso_size << E1000_ADVTXD_MSS_SHIFT); |
| 3311 | mss_l4len_idx |= (l4len << E1000_ADVTXD_L4LEN_SHIFT); |
| 3312 | |
Alexander Duyck | 73cd78f | 2009-02-12 18:16:59 +0000 | [diff] [blame] | 3313 | /* For 82575, context index must be unique per ring. */ |
Alexander Duyck | 85ad76b | 2009-10-27 15:52:46 +0000 | [diff] [blame] | 3314 | if (tx_ring->flags & IGB_RING_FLAG_TX_CTX_IDX) |
| 3315 | mss_l4len_idx |= tx_ring->reg_idx << 4; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3316 | |
| 3317 | context_desc->mss_l4len_idx = cpu_to_le32(mss_l4len_idx); |
| 3318 | context_desc->seqnum_seed = 0; |
| 3319 | |
| 3320 | buffer_info->time_stamp = jiffies; |
Alexander Duyck | 0e014cb | 2008-12-26 01:33:18 -0800 | [diff] [blame] | 3321 | buffer_info->next_to_watch = i; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3322 | buffer_info->dma = 0; |
| 3323 | i++; |
| 3324 | if (i == tx_ring->count) |
| 3325 | i = 0; |
| 3326 | |
| 3327 | tx_ring->next_to_use = i; |
| 3328 | |
| 3329 | return true; |
| 3330 | } |
| 3331 | |
Alexander Duyck | 85ad76b | 2009-10-27 15:52:46 +0000 | [diff] [blame] | 3332 | static inline bool igb_tx_csum_adv(struct igb_ring *tx_ring, |
| 3333 | struct sk_buff *skb, u32 tx_flags) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3334 | { |
| 3335 | struct e1000_adv_tx_context_desc *context_desc; |
Alexander Duyck | 8078529 | 2009-10-27 15:51:47 +0000 | [diff] [blame] | 3336 | struct pci_dev *pdev = tx_ring->pdev; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3337 | struct igb_buffer *buffer_info; |
| 3338 | u32 info = 0, tu_cmd = 0; |
Alexander Duyck | 8078529 | 2009-10-27 15:51:47 +0000 | [diff] [blame] | 3339 | unsigned int i; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3340 | |
| 3341 | if ((skb->ip_summed == CHECKSUM_PARTIAL) || |
| 3342 | (tx_flags & IGB_TX_FLAGS_VLAN)) { |
| 3343 | i = tx_ring->next_to_use; |
| 3344 | buffer_info = &tx_ring->buffer_info[i]; |
| 3345 | context_desc = E1000_TX_CTXTDESC_ADV(*tx_ring, i); |
| 3346 | |
| 3347 | if (tx_flags & IGB_TX_FLAGS_VLAN) |
| 3348 | info |= (tx_flags & IGB_TX_FLAGS_VLAN_MASK); |
| 3349 | info |= (skb_network_offset(skb) << E1000_ADVTXD_MACLEN_SHIFT); |
| 3350 | if (skb->ip_summed == CHECKSUM_PARTIAL) |
| 3351 | info |= skb_network_header_len(skb); |
| 3352 | |
| 3353 | context_desc->vlan_macip_lens = cpu_to_le32(info); |
| 3354 | |
| 3355 | tu_cmd |= (E1000_TXD_CMD_DEXT | E1000_ADVTXD_DTYP_CTXT); |
| 3356 | |
| 3357 | if (skb->ip_summed == CHECKSUM_PARTIAL) { |
Arthur Jones | fa4a7ef | 2009-03-21 16:55:07 -0700 | [diff] [blame] | 3358 | __be16 protocol; |
| 3359 | |
| 3360 | if (skb->protocol == cpu_to_be16(ETH_P_8021Q)) { |
| 3361 | const struct vlan_ethhdr *vhdr = |
| 3362 | (const struct vlan_ethhdr*)skb->data; |
| 3363 | |
| 3364 | protocol = vhdr->h_vlan_encapsulated_proto; |
| 3365 | } else { |
| 3366 | protocol = skb->protocol; |
| 3367 | } |
| 3368 | |
| 3369 | switch (protocol) { |
Harvey Harrison | 09640e6 | 2009-02-01 00:45:17 -0800 | [diff] [blame] | 3370 | case cpu_to_be16(ETH_P_IP): |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3371 | tu_cmd |= E1000_ADVTXD_TUCMD_IPV4; |
Mitch Williams | 44b0cda | 2008-03-07 10:32:13 -0800 | [diff] [blame] | 3372 | if (ip_hdr(skb)->protocol == IPPROTO_TCP) |
| 3373 | tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP; |
Jesse Brandeburg | b947356 | 2009-04-27 22:36:13 +0000 | [diff] [blame] | 3374 | else if (ip_hdr(skb)->protocol == IPPROTO_SCTP) |
| 3375 | tu_cmd |= E1000_ADVTXD_TUCMD_L4T_SCTP; |
Mitch Williams | 44b0cda | 2008-03-07 10:32:13 -0800 | [diff] [blame] | 3376 | break; |
Harvey Harrison | 09640e6 | 2009-02-01 00:45:17 -0800 | [diff] [blame] | 3377 | case cpu_to_be16(ETH_P_IPV6): |
Mitch Williams | 44b0cda | 2008-03-07 10:32:13 -0800 | [diff] [blame] | 3378 | /* XXX what about other V6 headers?? */ |
| 3379 | if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP) |
| 3380 | tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP; |
Jesse Brandeburg | b947356 | 2009-04-27 22:36:13 +0000 | [diff] [blame] | 3381 | else if (ipv6_hdr(skb)->nexthdr == IPPROTO_SCTP) |
| 3382 | tu_cmd |= E1000_ADVTXD_TUCMD_L4T_SCTP; |
Mitch Williams | 44b0cda | 2008-03-07 10:32:13 -0800 | [diff] [blame] | 3383 | break; |
| 3384 | default: |
| 3385 | if (unlikely(net_ratelimit())) |
Alexander Duyck | 8078529 | 2009-10-27 15:51:47 +0000 | [diff] [blame] | 3386 | dev_warn(&pdev->dev, |
Mitch Williams | 44b0cda | 2008-03-07 10:32:13 -0800 | [diff] [blame] | 3387 | "partial checksum but proto=%x!\n", |
| 3388 | skb->protocol); |
| 3389 | break; |
| 3390 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3391 | } |
| 3392 | |
| 3393 | context_desc->type_tucmd_mlhl = cpu_to_le32(tu_cmd); |
| 3394 | context_desc->seqnum_seed = 0; |
Alexander Duyck | 85ad76b | 2009-10-27 15:52:46 +0000 | [diff] [blame] | 3395 | if (tx_ring->flags & IGB_RING_FLAG_TX_CTX_IDX) |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 3396 | context_desc->mss_l4len_idx = |
Alexander Duyck | 85ad76b | 2009-10-27 15:52:46 +0000 | [diff] [blame] | 3397 | cpu_to_le32(tx_ring->reg_idx << 4); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3398 | |
| 3399 | buffer_info->time_stamp = jiffies; |
Alexander Duyck | 0e014cb | 2008-12-26 01:33:18 -0800 | [diff] [blame] | 3400 | buffer_info->next_to_watch = i; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3401 | buffer_info->dma = 0; |
| 3402 | |
| 3403 | i++; |
| 3404 | if (i == tx_ring->count) |
| 3405 | i = 0; |
| 3406 | tx_ring->next_to_use = i; |
| 3407 | |
| 3408 | return true; |
| 3409 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3410 | return false; |
| 3411 | } |
| 3412 | |
| 3413 | #define IGB_MAX_TXD_PWR 16 |
| 3414 | #define IGB_MAX_DATA_PER_TXD (1<<IGB_MAX_TXD_PWR) |
| 3415 | |
Alexander Duyck | 8078529 | 2009-10-27 15:51:47 +0000 | [diff] [blame] | 3416 | static inline int igb_tx_map_adv(struct igb_ring *tx_ring, struct sk_buff *skb, |
Alexander Duyck | 0e014cb | 2008-12-26 01:33:18 -0800 | [diff] [blame] | 3417 | unsigned int first) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3418 | { |
| 3419 | struct igb_buffer *buffer_info; |
Alexander Duyck | 8078529 | 2009-10-27 15:51:47 +0000 | [diff] [blame] | 3420 | struct pci_dev *pdev = tx_ring->pdev; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3421 | unsigned int len = skb_headlen(skb); |
| 3422 | unsigned int count = 0, i; |
| 3423 | unsigned int f; |
Alexander Duyck | 65689fe | 2009-03-20 00:17:43 +0000 | [diff] [blame] | 3424 | dma_addr_t *map; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3425 | |
| 3426 | i = tx_ring->next_to_use; |
| 3427 | |
Alexander Duyck | 8078529 | 2009-10-27 15:51:47 +0000 | [diff] [blame] | 3428 | if (skb_dma_map(&pdev->dev, skb, DMA_TO_DEVICE)) { |
| 3429 | dev_err(&pdev->dev, "TX DMA map failed\n"); |
Alexander Duyck | 65689fe | 2009-03-20 00:17:43 +0000 | [diff] [blame] | 3430 | return 0; |
| 3431 | } |
| 3432 | |
| 3433 | map = skb_shinfo(skb)->dma_maps; |
| 3434 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3435 | buffer_info = &tx_ring->buffer_info[i]; |
| 3436 | BUG_ON(len >= IGB_MAX_DATA_PER_TXD); |
| 3437 | buffer_info->length = len; |
| 3438 | /* set time_stamp *before* dma to help avoid a possible race */ |
| 3439 | buffer_info->time_stamp = jiffies; |
Alexander Duyck | 0e014cb | 2008-12-26 01:33:18 -0800 | [diff] [blame] | 3440 | buffer_info->next_to_watch = i; |
Eric Dumazet | 042a53a | 2009-06-05 04:04:16 +0000 | [diff] [blame] | 3441 | buffer_info->dma = skb_shinfo(skb)->dma_head; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3442 | |
| 3443 | for (f = 0; f < skb_shinfo(skb)->nr_frags; f++) { |
| 3444 | struct skb_frag_struct *frag; |
| 3445 | |
Alexander Duyck | 65689fe | 2009-03-20 00:17:43 +0000 | [diff] [blame] | 3446 | i++; |
| 3447 | if (i == tx_ring->count) |
| 3448 | i = 0; |
| 3449 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3450 | frag = &skb_shinfo(skb)->frags[f]; |
| 3451 | len = frag->size; |
| 3452 | |
| 3453 | buffer_info = &tx_ring->buffer_info[i]; |
| 3454 | BUG_ON(len >= IGB_MAX_DATA_PER_TXD); |
| 3455 | buffer_info->length = len; |
| 3456 | buffer_info->time_stamp = jiffies; |
Alexander Duyck | 0e014cb | 2008-12-26 01:33:18 -0800 | [diff] [blame] | 3457 | buffer_info->next_to_watch = i; |
Alexander Duyck | 65689fe | 2009-03-20 00:17:43 +0000 | [diff] [blame] | 3458 | buffer_info->dma = map[count]; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3459 | count++; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3460 | } |
| 3461 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3462 | tx_ring->buffer_info[i].skb = skb; |
Alexander Duyck | 0e014cb | 2008-12-26 01:33:18 -0800 | [diff] [blame] | 3463 | tx_ring->buffer_info[first].next_to_watch = i; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3464 | |
Eric Dumazet | 042a53a | 2009-06-05 04:04:16 +0000 | [diff] [blame] | 3465 | return count + 1; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3466 | } |
| 3467 | |
Alexander Duyck | 85ad76b | 2009-10-27 15:52:46 +0000 | [diff] [blame] | 3468 | static inline void igb_tx_queue_adv(struct igb_ring *tx_ring, |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3469 | int tx_flags, int count, u32 paylen, |
| 3470 | u8 hdr_len) |
| 3471 | { |
| 3472 | union e1000_adv_tx_desc *tx_desc = NULL; |
| 3473 | struct igb_buffer *buffer_info; |
| 3474 | u32 olinfo_status = 0, cmd_type_len; |
| 3475 | unsigned int i; |
| 3476 | |
| 3477 | cmd_type_len = (E1000_ADVTXD_DTYP_DATA | E1000_ADVTXD_DCMD_IFCS | |
| 3478 | E1000_ADVTXD_DCMD_DEXT); |
| 3479 | |
| 3480 | if (tx_flags & IGB_TX_FLAGS_VLAN) |
| 3481 | cmd_type_len |= E1000_ADVTXD_DCMD_VLE; |
| 3482 | |
Patrick Ohly | 33af6bc | 2009-02-12 05:03:43 +0000 | [diff] [blame] | 3483 | if (tx_flags & IGB_TX_FLAGS_TSTAMP) |
| 3484 | cmd_type_len |= E1000_ADVTXD_MAC_TSTAMP; |
| 3485 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3486 | if (tx_flags & IGB_TX_FLAGS_TSO) { |
| 3487 | cmd_type_len |= E1000_ADVTXD_DCMD_TSE; |
| 3488 | |
| 3489 | /* insert tcp checksum */ |
| 3490 | olinfo_status |= E1000_TXD_POPTS_TXSM << 8; |
| 3491 | |
| 3492 | /* insert ip checksum */ |
| 3493 | if (tx_flags & IGB_TX_FLAGS_IPV4) |
| 3494 | olinfo_status |= E1000_TXD_POPTS_IXSM << 8; |
| 3495 | |
| 3496 | } else if (tx_flags & IGB_TX_FLAGS_CSUM) { |
| 3497 | olinfo_status |= E1000_TXD_POPTS_TXSM << 8; |
| 3498 | } |
| 3499 | |
Alexander Duyck | 85ad76b | 2009-10-27 15:52:46 +0000 | [diff] [blame] | 3500 | if ((tx_ring->flags & IGB_RING_FLAG_TX_CTX_IDX) && |
| 3501 | (tx_flags & (IGB_TX_FLAGS_CSUM | |
| 3502 | IGB_TX_FLAGS_TSO | |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 3503 | IGB_TX_FLAGS_VLAN))) |
Alexander Duyck | 85ad76b | 2009-10-27 15:52:46 +0000 | [diff] [blame] | 3504 | olinfo_status |= tx_ring->reg_idx << 4; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3505 | |
| 3506 | olinfo_status |= ((paylen - hdr_len) << E1000_ADVTXD_PAYLEN_SHIFT); |
| 3507 | |
| 3508 | i = tx_ring->next_to_use; |
| 3509 | while (count--) { |
| 3510 | buffer_info = &tx_ring->buffer_info[i]; |
| 3511 | tx_desc = E1000_TX_DESC_ADV(*tx_ring, i); |
| 3512 | tx_desc->read.buffer_addr = cpu_to_le64(buffer_info->dma); |
| 3513 | tx_desc->read.cmd_type_len = |
| 3514 | cpu_to_le32(cmd_type_len | buffer_info->length); |
| 3515 | tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status); |
| 3516 | i++; |
| 3517 | if (i == tx_ring->count) |
| 3518 | i = 0; |
| 3519 | } |
| 3520 | |
Alexander Duyck | 85ad76b | 2009-10-27 15:52:46 +0000 | [diff] [blame] | 3521 | tx_desc->read.cmd_type_len |= cpu_to_le32(IGB_ADVTXD_DCMD); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3522 | /* Force memory writes to complete before letting h/w |
| 3523 | * know there are new descriptors to fetch. (Only |
| 3524 | * applicable for weak-ordered memory model archs, |
| 3525 | * such as IA-64). */ |
| 3526 | wmb(); |
| 3527 | |
| 3528 | tx_ring->next_to_use = i; |
Alexander Duyck | fce99e3 | 2009-10-27 15:51:27 +0000 | [diff] [blame] | 3529 | writel(i, tx_ring->tail); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3530 | /* we need this if more than one processor can write to our tail |
| 3531 | * at a time, it syncronizes IO on IA64/Altix systems */ |
| 3532 | mmiowb(); |
| 3533 | } |
| 3534 | |
Alexander Duyck | e694e96 | 2009-10-27 15:53:06 +0000 | [diff] [blame] | 3535 | static int __igb_maybe_stop_tx(struct igb_ring *tx_ring, int size) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3536 | { |
Alexander Duyck | e694e96 | 2009-10-27 15:53:06 +0000 | [diff] [blame] | 3537 | struct net_device *netdev = tx_ring->netdev; |
| 3538 | |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 3539 | netif_stop_subqueue(netdev, tx_ring->queue_index); |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 3540 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3541 | /* Herbert's original patch had: |
| 3542 | * smp_mb__after_netif_stop_queue(); |
| 3543 | * but since that doesn't exist yet, just open code it. */ |
| 3544 | smp_mb(); |
| 3545 | |
| 3546 | /* We need to check again in a case another CPU has just |
| 3547 | * made room available. */ |
Alexander Duyck | c493ea4 | 2009-03-20 00:16:50 +0000 | [diff] [blame] | 3548 | if (igb_desc_unused(tx_ring) < size) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3549 | return -EBUSY; |
| 3550 | |
| 3551 | /* A reprieve! */ |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 3552 | netif_wake_subqueue(netdev, tx_ring->queue_index); |
Alexander Duyck | 04a5fcaa | 2009-10-27 15:52:27 +0000 | [diff] [blame] | 3553 | tx_ring->tx_stats.restart_queue++; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3554 | return 0; |
| 3555 | } |
| 3556 | |
Alexander Duyck | e694e96 | 2009-10-27 15:53:06 +0000 | [diff] [blame] | 3557 | static int igb_maybe_stop_tx(struct igb_ring *tx_ring, int size) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3558 | { |
Alexander Duyck | c493ea4 | 2009-03-20 00:16:50 +0000 | [diff] [blame] | 3559 | if (igb_desc_unused(tx_ring) >= size) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3560 | return 0; |
Alexander Duyck | e694e96 | 2009-10-27 15:53:06 +0000 | [diff] [blame] | 3561 | return __igb_maybe_stop_tx(tx_ring, size); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3562 | } |
| 3563 | |
Alexander Duyck | b1a436c | 2009-10-27 15:54:43 +0000 | [diff] [blame] | 3564 | netdev_tx_t igb_xmit_frame_ring_adv(struct sk_buff *skb, |
| 3565 | struct igb_ring *tx_ring) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3566 | { |
Alexander Duyck | e694e96 | 2009-10-27 15:53:06 +0000 | [diff] [blame] | 3567 | struct igb_adapter *adapter = netdev_priv(tx_ring->netdev); |
Alexander Duyck | 0e014cb | 2008-12-26 01:33:18 -0800 | [diff] [blame] | 3568 | unsigned int first; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3569 | unsigned int tx_flags = 0; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3570 | u8 hdr_len = 0; |
Alexander Duyck | 65689fe | 2009-03-20 00:17:43 +0000 | [diff] [blame] | 3571 | int count = 0; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3572 | int tso = 0; |
Alexander Duyck | c5b9bd5 | 2009-10-27 23:46:01 +0000 | [diff] [blame] | 3573 | union skb_shared_tx *shtx = skb_tx(skb); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3574 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3575 | /* need: 1 descriptor per page, |
| 3576 | * + 2 desc gap to keep tail from touching head, |
| 3577 | * + 1 desc for skb->data, |
| 3578 | * + 1 desc for context descriptor, |
| 3579 | * otherwise try next time */ |
Alexander Duyck | e694e96 | 2009-10-27 15:53:06 +0000 | [diff] [blame] | 3580 | if (igb_maybe_stop_tx(tx_ring, skb_shinfo(skb)->nr_frags + 4)) { |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3581 | /* this is a hard error */ |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3582 | return NETDEV_TX_BUSY; |
| 3583 | } |
Patrick Ohly | 33af6bc | 2009-02-12 05:03:43 +0000 | [diff] [blame] | 3584 | |
Patrick Ohly | 33af6bc | 2009-02-12 05:03:43 +0000 | [diff] [blame] | 3585 | if (unlikely(shtx->hardware)) { |
| 3586 | shtx->in_progress = 1; |
| 3587 | tx_flags |= IGB_TX_FLAGS_TSTAMP; |
Patrick Ohly | 33af6bc | 2009-02-12 05:03:43 +0000 | [diff] [blame] | 3588 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3589 | |
| 3590 | if (adapter->vlgrp && vlan_tx_tag_present(skb)) { |
| 3591 | tx_flags |= IGB_TX_FLAGS_VLAN; |
| 3592 | tx_flags |= (vlan_tx_tag_get(skb) << IGB_TX_FLAGS_VLAN_SHIFT); |
| 3593 | } |
| 3594 | |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 3595 | if (skb->protocol == htons(ETH_P_IP)) |
| 3596 | tx_flags |= IGB_TX_FLAGS_IPV4; |
| 3597 | |
Alexander Duyck | 0e014cb | 2008-12-26 01:33:18 -0800 | [diff] [blame] | 3598 | first = tx_ring->next_to_use; |
Alexander Duyck | 85ad76b | 2009-10-27 15:52:46 +0000 | [diff] [blame] | 3599 | if (skb_is_gso(skb)) { |
| 3600 | tso = igb_tso_adv(tx_ring, skb, tx_flags, &hdr_len); |
| 3601 | if (tso < 0) { |
| 3602 | dev_kfree_skb_any(skb); |
| 3603 | return NETDEV_TX_OK; |
| 3604 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3605 | } |
| 3606 | |
| 3607 | if (tso) |
| 3608 | tx_flags |= IGB_TX_FLAGS_TSO; |
Alexander Duyck | 85ad76b | 2009-10-27 15:52:46 +0000 | [diff] [blame] | 3609 | else if (igb_tx_csum_adv(tx_ring, skb, tx_flags) && |
Alexander Duyck | bc1cbd3 | 2009-02-13 14:45:17 +0000 | [diff] [blame] | 3610 | (skb->ip_summed == CHECKSUM_PARTIAL)) |
| 3611 | tx_flags |= IGB_TX_FLAGS_CSUM; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3612 | |
Alexander Duyck | 65689fe | 2009-03-20 00:17:43 +0000 | [diff] [blame] | 3613 | /* |
| 3614 | * count reflects descriptors mapped, if 0 then mapping error |
| 3615 | * has occured and we need to rewind the descriptor queue |
| 3616 | */ |
Alexander Duyck | 8078529 | 2009-10-27 15:51:47 +0000 | [diff] [blame] | 3617 | count = igb_tx_map_adv(tx_ring, skb, first); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3618 | |
Alexander Duyck | 85ad76b | 2009-10-27 15:52:46 +0000 | [diff] [blame] | 3619 | if (!count) { |
Alexander Duyck | 65689fe | 2009-03-20 00:17:43 +0000 | [diff] [blame] | 3620 | dev_kfree_skb_any(skb); |
| 3621 | tx_ring->buffer_info[first].time_stamp = 0; |
| 3622 | tx_ring->next_to_use = first; |
Alexander Duyck | 85ad76b | 2009-10-27 15:52:46 +0000 | [diff] [blame] | 3623 | return NETDEV_TX_OK; |
Alexander Duyck | 65689fe | 2009-03-20 00:17:43 +0000 | [diff] [blame] | 3624 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3625 | |
Alexander Duyck | 85ad76b | 2009-10-27 15:52:46 +0000 | [diff] [blame] | 3626 | igb_tx_queue_adv(tx_ring, tx_flags, count, skb->len, hdr_len); |
| 3627 | |
| 3628 | /* Make sure there is space in the ring for the next send. */ |
Alexander Duyck | e694e96 | 2009-10-27 15:53:06 +0000 | [diff] [blame] | 3629 | igb_maybe_stop_tx(tx_ring, MAX_SKB_FRAGS + 4); |
Alexander Duyck | 85ad76b | 2009-10-27 15:52:46 +0000 | [diff] [blame] | 3630 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3631 | return NETDEV_TX_OK; |
| 3632 | } |
| 3633 | |
Stephen Hemminger | 3b29a56 | 2009-08-31 19:50:55 +0000 | [diff] [blame] | 3634 | static netdev_tx_t igb_xmit_frame_adv(struct sk_buff *skb, |
| 3635 | struct net_device *netdev) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3636 | { |
| 3637 | struct igb_adapter *adapter = netdev_priv(netdev); |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 3638 | struct igb_ring *tx_ring; |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 3639 | int r_idx = 0; |
Alexander Duyck | b1a436c | 2009-10-27 15:54:43 +0000 | [diff] [blame] | 3640 | |
| 3641 | if (test_bit(__IGB_DOWN, &adapter->state)) { |
| 3642 | dev_kfree_skb_any(skb); |
| 3643 | return NETDEV_TX_OK; |
| 3644 | } |
| 3645 | |
| 3646 | if (skb->len <= 0) { |
| 3647 | dev_kfree_skb_any(skb); |
| 3648 | return NETDEV_TX_OK; |
| 3649 | } |
| 3650 | |
Alexander Duyck | 1bfaf07 | 2009-02-19 20:39:23 -0800 | [diff] [blame] | 3651 | 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] | 3652 | tx_ring = adapter->multi_tx_table[r_idx]; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3653 | |
| 3654 | /* This goes back to the question of how to logically map a tx queue |
| 3655 | * to a flow. Right now, performance is impacted slightly negatively |
| 3656 | * if using multiple tx queues. If the stack breaks away from a |
| 3657 | * single qdisc implementation, we can look at this again. */ |
Alexander Duyck | e694e96 | 2009-10-27 15:53:06 +0000 | [diff] [blame] | 3658 | return igb_xmit_frame_ring_adv(skb, tx_ring); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3659 | } |
| 3660 | |
| 3661 | /** |
| 3662 | * igb_tx_timeout - Respond to a Tx Hang |
| 3663 | * @netdev: network interface device structure |
| 3664 | **/ |
| 3665 | static void igb_tx_timeout(struct net_device *netdev) |
| 3666 | { |
| 3667 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 3668 | struct e1000_hw *hw = &adapter->hw; |
| 3669 | |
| 3670 | /* Do the reset outside of interrupt context */ |
| 3671 | adapter->tx_timeout_count++; |
Alexander Duyck | f7ba205 | 2009-10-27 23:48:51 +0000 | [diff] [blame] | 3672 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3673 | schedule_work(&adapter->reset_task); |
Alexander Duyck | 265de40 | 2009-02-06 23:22:52 +0000 | [diff] [blame] | 3674 | wr32(E1000_EICS, |
| 3675 | (adapter->eims_enable_mask & ~adapter->eims_other)); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3676 | } |
| 3677 | |
| 3678 | static void igb_reset_task(struct work_struct *work) |
| 3679 | { |
| 3680 | struct igb_adapter *adapter; |
| 3681 | adapter = container_of(work, struct igb_adapter, reset_task); |
| 3682 | |
| 3683 | igb_reinit_locked(adapter); |
| 3684 | } |
| 3685 | |
| 3686 | /** |
| 3687 | * igb_get_stats - Get System Network Statistics |
| 3688 | * @netdev: network interface device structure |
| 3689 | * |
| 3690 | * Returns the address of the device statistics structure. |
| 3691 | * The statistics are actually updated from the timer callback. |
| 3692 | **/ |
Alexander Duyck | 73cd78f | 2009-02-12 18:16:59 +0000 | [diff] [blame] | 3693 | static struct net_device_stats *igb_get_stats(struct net_device *netdev) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3694 | { |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3695 | /* only return the current stats */ |
Ajit Khaparde | 8d24e93 | 2009-10-07 02:42:56 +0000 | [diff] [blame] | 3696 | return &netdev->stats; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3697 | } |
| 3698 | |
| 3699 | /** |
| 3700 | * igb_change_mtu - Change the Maximum Transfer Unit |
| 3701 | * @netdev: network interface device structure |
| 3702 | * @new_mtu: new value for maximum frame size |
| 3703 | * |
| 3704 | * Returns 0 on success, negative on failure |
| 3705 | **/ |
| 3706 | static int igb_change_mtu(struct net_device *netdev, int new_mtu) |
| 3707 | { |
| 3708 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 3709 | int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN; |
Alexander Duyck | 4c84485 | 2009-10-27 15:52:07 +0000 | [diff] [blame] | 3710 | u32 rx_buffer_len, i; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3711 | |
| 3712 | if ((max_frame < ETH_ZLEN + ETH_FCS_LEN) || |
| 3713 | (max_frame > MAX_JUMBO_FRAME_SIZE)) { |
| 3714 | dev_err(&adapter->pdev->dev, "Invalid MTU setting\n"); |
| 3715 | return -EINVAL; |
| 3716 | } |
| 3717 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3718 | if (max_frame > MAX_STD_JUMBO_FRAME_SIZE) { |
| 3719 | dev_err(&adapter->pdev->dev, "MTU > 9216 not supported.\n"); |
| 3720 | return -EINVAL; |
| 3721 | } |
| 3722 | |
| 3723 | while (test_and_set_bit(__IGB_RESETTING, &adapter->state)) |
| 3724 | msleep(1); |
Alexander Duyck | 73cd78f | 2009-02-12 18:16:59 +0000 | [diff] [blame] | 3725 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3726 | /* igb_down has a dependency on max_frame_size */ |
| 3727 | adapter->max_frame_size = max_frame; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3728 | /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN |
| 3729 | * means we reserve 2 more, this pushes us to allocate from the next |
| 3730 | * larger slab size. |
| 3731 | * i.e. RXBUFFER_2048 --> size-4096 slab |
| 3732 | */ |
| 3733 | |
Alexander Duyck | 7d95b71 | 2009-10-27 15:50:08 +0000 | [diff] [blame] | 3734 | if (max_frame <= IGB_RXBUFFER_1024) |
Alexander Duyck | 4c84485 | 2009-10-27 15:52:07 +0000 | [diff] [blame] | 3735 | rx_buffer_len = IGB_RXBUFFER_1024; |
Alexander Duyck | 6ec43fe | 2009-10-27 15:50:48 +0000 | [diff] [blame] | 3736 | else if (max_frame <= MAXIMUM_ETHERNET_VLAN_SIZE) |
Alexander Duyck | 4c84485 | 2009-10-27 15:52:07 +0000 | [diff] [blame] | 3737 | rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE; |
Alexander Duyck | 6ec43fe | 2009-10-27 15:50:48 +0000 | [diff] [blame] | 3738 | else |
Alexander Duyck | 4c84485 | 2009-10-27 15:52:07 +0000 | [diff] [blame] | 3739 | rx_buffer_len = IGB_RXBUFFER_128; |
| 3740 | |
| 3741 | if (netif_running(netdev)) |
| 3742 | igb_down(adapter); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3743 | |
| 3744 | dev_info(&adapter->pdev->dev, "changing MTU from %d to %d\n", |
| 3745 | netdev->mtu, new_mtu); |
| 3746 | netdev->mtu = new_mtu; |
| 3747 | |
Alexander Duyck | 4c84485 | 2009-10-27 15:52:07 +0000 | [diff] [blame] | 3748 | for (i = 0; i < adapter->num_rx_queues; i++) |
| 3749 | adapter->rx_ring[i].rx_buffer_len = rx_buffer_len; |
| 3750 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3751 | if (netif_running(netdev)) |
| 3752 | igb_up(adapter); |
| 3753 | else |
| 3754 | igb_reset(adapter); |
| 3755 | |
| 3756 | clear_bit(__IGB_RESETTING, &adapter->state); |
| 3757 | |
| 3758 | return 0; |
| 3759 | } |
| 3760 | |
| 3761 | /** |
| 3762 | * igb_update_stats - Update the board statistics counters |
| 3763 | * @adapter: board private structure |
| 3764 | **/ |
| 3765 | |
| 3766 | void igb_update_stats(struct igb_adapter *adapter) |
| 3767 | { |
Ajit Khaparde | 8d24e93 | 2009-10-07 02:42:56 +0000 | [diff] [blame] | 3768 | struct net_device *netdev = adapter->netdev; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3769 | struct e1000_hw *hw = &adapter->hw; |
| 3770 | struct pci_dev *pdev = adapter->pdev; |
Alexander Duyck | 3f9c016 | 2009-10-27 23:48:12 +0000 | [diff] [blame] | 3771 | u32 rnbc; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3772 | u16 phy_tmp; |
Alexander Duyck | 3f9c016 | 2009-10-27 23:48:12 +0000 | [diff] [blame] | 3773 | int i; |
| 3774 | u64 bytes, packets; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3775 | |
| 3776 | #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF |
| 3777 | |
| 3778 | /* |
| 3779 | * Prevent stats update while adapter is being reset, or if the pci |
| 3780 | * connection is down. |
| 3781 | */ |
| 3782 | if (adapter->link_speed == 0) |
| 3783 | return; |
| 3784 | if (pci_channel_offline(pdev)) |
| 3785 | return; |
| 3786 | |
Alexander Duyck | 3f9c016 | 2009-10-27 23:48:12 +0000 | [diff] [blame] | 3787 | bytes = 0; |
| 3788 | packets = 0; |
| 3789 | for (i = 0; i < adapter->num_rx_queues; i++) { |
| 3790 | u32 rqdpc_tmp = rd32(E1000_RQDPC(i)) & 0x0FFF; |
| 3791 | adapter->rx_ring[i].rx_stats.drops += rqdpc_tmp; |
| 3792 | netdev->stats.rx_fifo_errors += rqdpc_tmp; |
| 3793 | bytes += adapter->rx_ring[i].rx_stats.bytes; |
| 3794 | packets += adapter->rx_ring[i].rx_stats.packets; |
| 3795 | } |
| 3796 | |
| 3797 | netdev->stats.rx_bytes = bytes; |
| 3798 | netdev->stats.rx_packets = packets; |
| 3799 | |
| 3800 | bytes = 0; |
| 3801 | packets = 0; |
| 3802 | for (i = 0; i < adapter->num_tx_queues; i++) { |
| 3803 | bytes += adapter->tx_ring[i].tx_stats.bytes; |
| 3804 | packets += adapter->tx_ring[i].tx_stats.packets; |
| 3805 | } |
| 3806 | netdev->stats.tx_bytes = bytes; |
| 3807 | netdev->stats.tx_packets = packets; |
| 3808 | |
| 3809 | /* read stats registers */ |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3810 | adapter->stats.crcerrs += rd32(E1000_CRCERRS); |
| 3811 | adapter->stats.gprc += rd32(E1000_GPRC); |
| 3812 | adapter->stats.gorc += rd32(E1000_GORCL); |
| 3813 | rd32(E1000_GORCH); /* clear GORCL */ |
| 3814 | adapter->stats.bprc += rd32(E1000_BPRC); |
| 3815 | adapter->stats.mprc += rd32(E1000_MPRC); |
| 3816 | adapter->stats.roc += rd32(E1000_ROC); |
| 3817 | |
| 3818 | adapter->stats.prc64 += rd32(E1000_PRC64); |
| 3819 | adapter->stats.prc127 += rd32(E1000_PRC127); |
| 3820 | adapter->stats.prc255 += rd32(E1000_PRC255); |
| 3821 | adapter->stats.prc511 += rd32(E1000_PRC511); |
| 3822 | adapter->stats.prc1023 += rd32(E1000_PRC1023); |
| 3823 | adapter->stats.prc1522 += rd32(E1000_PRC1522); |
| 3824 | adapter->stats.symerrs += rd32(E1000_SYMERRS); |
| 3825 | adapter->stats.sec += rd32(E1000_SEC); |
| 3826 | |
| 3827 | adapter->stats.mpc += rd32(E1000_MPC); |
| 3828 | adapter->stats.scc += rd32(E1000_SCC); |
| 3829 | adapter->stats.ecol += rd32(E1000_ECOL); |
| 3830 | adapter->stats.mcc += rd32(E1000_MCC); |
| 3831 | adapter->stats.latecol += rd32(E1000_LATECOL); |
| 3832 | adapter->stats.dc += rd32(E1000_DC); |
| 3833 | adapter->stats.rlec += rd32(E1000_RLEC); |
| 3834 | adapter->stats.xonrxc += rd32(E1000_XONRXC); |
| 3835 | adapter->stats.xontxc += rd32(E1000_XONTXC); |
| 3836 | adapter->stats.xoffrxc += rd32(E1000_XOFFRXC); |
| 3837 | adapter->stats.xofftxc += rd32(E1000_XOFFTXC); |
| 3838 | adapter->stats.fcruc += rd32(E1000_FCRUC); |
| 3839 | adapter->stats.gptc += rd32(E1000_GPTC); |
| 3840 | adapter->stats.gotc += rd32(E1000_GOTCL); |
| 3841 | rd32(E1000_GOTCH); /* clear GOTCL */ |
Alexander Duyck | 3f9c016 | 2009-10-27 23:48:12 +0000 | [diff] [blame] | 3842 | rnbc = rd32(E1000_RNBC); |
| 3843 | adapter->stats.rnbc += rnbc; |
| 3844 | netdev->stats.rx_fifo_errors += rnbc; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3845 | adapter->stats.ruc += rd32(E1000_RUC); |
| 3846 | adapter->stats.rfc += rd32(E1000_RFC); |
| 3847 | adapter->stats.rjc += rd32(E1000_RJC); |
| 3848 | adapter->stats.tor += rd32(E1000_TORH); |
| 3849 | adapter->stats.tot += rd32(E1000_TOTH); |
| 3850 | adapter->stats.tpr += rd32(E1000_TPR); |
| 3851 | |
| 3852 | adapter->stats.ptc64 += rd32(E1000_PTC64); |
| 3853 | adapter->stats.ptc127 += rd32(E1000_PTC127); |
| 3854 | adapter->stats.ptc255 += rd32(E1000_PTC255); |
| 3855 | adapter->stats.ptc511 += rd32(E1000_PTC511); |
| 3856 | adapter->stats.ptc1023 += rd32(E1000_PTC1023); |
| 3857 | adapter->stats.ptc1522 += rd32(E1000_PTC1522); |
| 3858 | |
| 3859 | adapter->stats.mptc += rd32(E1000_MPTC); |
| 3860 | adapter->stats.bptc += rd32(E1000_BPTC); |
| 3861 | |
| 3862 | /* used for adaptive IFS */ |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3863 | hw->mac.tx_packet_delta = rd32(E1000_TPT); |
| 3864 | adapter->stats.tpt += hw->mac.tx_packet_delta; |
| 3865 | hw->mac.collision_delta = rd32(E1000_COLC); |
| 3866 | adapter->stats.colc += hw->mac.collision_delta; |
| 3867 | |
| 3868 | adapter->stats.algnerrc += rd32(E1000_ALGNERRC); |
| 3869 | adapter->stats.rxerrc += rd32(E1000_RXERRC); |
| 3870 | adapter->stats.tncrs += rd32(E1000_TNCRS); |
| 3871 | adapter->stats.tsctc += rd32(E1000_TSCTC); |
| 3872 | adapter->stats.tsctfc += rd32(E1000_TSCTFC); |
| 3873 | |
| 3874 | adapter->stats.iac += rd32(E1000_IAC); |
| 3875 | adapter->stats.icrxoc += rd32(E1000_ICRXOC); |
| 3876 | adapter->stats.icrxptc += rd32(E1000_ICRXPTC); |
| 3877 | adapter->stats.icrxatc += rd32(E1000_ICRXATC); |
| 3878 | adapter->stats.ictxptc += rd32(E1000_ICTXPTC); |
| 3879 | adapter->stats.ictxatc += rd32(E1000_ICTXATC); |
| 3880 | adapter->stats.ictxqec += rd32(E1000_ICTXQEC); |
| 3881 | adapter->stats.ictxqmtc += rd32(E1000_ICTXQMTC); |
| 3882 | adapter->stats.icrxdmtc += rd32(E1000_ICRXDMTC); |
| 3883 | |
| 3884 | /* Fill out the OS statistics structure */ |
Ajit Khaparde | 8d24e93 | 2009-10-07 02:42:56 +0000 | [diff] [blame] | 3885 | netdev->stats.multicast = adapter->stats.mprc; |
| 3886 | netdev->stats.collisions = adapter->stats.colc; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3887 | |
| 3888 | /* Rx Errors */ |
| 3889 | |
| 3890 | /* RLEC on some newer hardware can be incorrect so build |
Jesper Dangaard Brouer | 8c0ab70 | 2009-05-26 13:50:31 +0000 | [diff] [blame] | 3891 | * our own version based on RUC and ROC */ |
Ajit Khaparde | 8d24e93 | 2009-10-07 02:42:56 +0000 | [diff] [blame] | 3892 | netdev->stats.rx_errors = adapter->stats.rxerrc + |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3893 | adapter->stats.crcerrs + adapter->stats.algnerrc + |
| 3894 | adapter->stats.ruc + adapter->stats.roc + |
| 3895 | adapter->stats.cexterr; |
Ajit Khaparde | 8d24e93 | 2009-10-07 02:42:56 +0000 | [diff] [blame] | 3896 | netdev->stats.rx_length_errors = adapter->stats.ruc + |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3897 | adapter->stats.roc; |
Ajit Khaparde | 8d24e93 | 2009-10-07 02:42:56 +0000 | [diff] [blame] | 3898 | netdev->stats.rx_crc_errors = adapter->stats.crcerrs; |
| 3899 | netdev->stats.rx_frame_errors = adapter->stats.algnerrc; |
| 3900 | netdev->stats.rx_missed_errors = adapter->stats.mpc; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3901 | |
| 3902 | /* Tx Errors */ |
Ajit Khaparde | 8d24e93 | 2009-10-07 02:42:56 +0000 | [diff] [blame] | 3903 | netdev->stats.tx_errors = adapter->stats.ecol + |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3904 | adapter->stats.latecol; |
Ajit Khaparde | 8d24e93 | 2009-10-07 02:42:56 +0000 | [diff] [blame] | 3905 | netdev->stats.tx_aborted_errors = adapter->stats.ecol; |
| 3906 | netdev->stats.tx_window_errors = adapter->stats.latecol; |
| 3907 | netdev->stats.tx_carrier_errors = adapter->stats.tncrs; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3908 | |
| 3909 | /* Tx Dropped needs to be maintained elsewhere */ |
| 3910 | |
| 3911 | /* Phy Stats */ |
| 3912 | if (hw->phy.media_type == e1000_media_type_copper) { |
| 3913 | if ((adapter->link_speed == SPEED_1000) && |
Alexander Duyck | 73cd78f | 2009-02-12 18:16:59 +0000 | [diff] [blame] | 3914 | (!igb_read_phy_reg(hw, PHY_1000T_STATUS, &phy_tmp))) { |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3915 | phy_tmp &= PHY_IDLE_ERROR_COUNT_MASK; |
| 3916 | adapter->phy_stats.idle_errors += phy_tmp; |
| 3917 | } |
| 3918 | } |
| 3919 | |
| 3920 | /* Management Stats */ |
| 3921 | adapter->stats.mgptc += rd32(E1000_MGTPTC); |
| 3922 | adapter->stats.mgprc += rd32(E1000_MGTPRC); |
| 3923 | adapter->stats.mgpdc += rd32(E1000_MGTPDC); |
| 3924 | } |
| 3925 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3926 | static irqreturn_t igb_msix_other(int irq, void *data) |
| 3927 | { |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 3928 | struct igb_adapter *adapter = data; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3929 | struct e1000_hw *hw = &adapter->hw; |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 3930 | u32 icr = rd32(E1000_ICR); |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 3931 | /* reading ICR causes bit 31 of EICR to be cleared */ |
Alexander Duyck | dda0e08 | 2009-02-06 23:19:08 +0000 | [diff] [blame] | 3932 | |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 3933 | if (icr & E1000_ICR_DOUTSYNC) { |
Alexander Duyck | dda0e08 | 2009-02-06 23:19:08 +0000 | [diff] [blame] | 3934 | /* HW is reporting DMA is out of sync */ |
| 3935 | adapter->stats.doosync++; |
| 3936 | } |
Alexander Duyck | eebbbdb | 2009-02-06 23:19:29 +0000 | [diff] [blame] | 3937 | |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 3938 | /* Check for a mailbox event */ |
| 3939 | if (icr & E1000_ICR_VMMB) |
| 3940 | igb_msg_task(adapter); |
| 3941 | |
| 3942 | if (icr & E1000_ICR_LSC) { |
| 3943 | hw->mac.get_link_status = 1; |
| 3944 | /* guard against interrupt when we're going down */ |
| 3945 | if (!test_bit(__IGB_DOWN, &adapter->state)) |
| 3946 | mod_timer(&adapter->watchdog_timer, jiffies + 1); |
| 3947 | } |
| 3948 | |
Alexander Duyck | 25568a5 | 2009-10-27 23:49:59 +0000 | [diff] [blame] | 3949 | if (adapter->vfs_allocated_count) |
| 3950 | wr32(E1000_IMS, E1000_IMS_LSC | |
| 3951 | E1000_IMS_VMMB | |
| 3952 | E1000_IMS_DOUTSYNC); |
| 3953 | else |
| 3954 | wr32(E1000_IMS, E1000_IMS_LSC | E1000_IMS_DOUTSYNC); |
PJ Waskiewicz | 844290e | 2008-06-27 11:00:39 -0700 | [diff] [blame] | 3955 | wr32(E1000_EIMS, adapter->eims_other); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3956 | |
| 3957 | return IRQ_HANDLED; |
| 3958 | } |
| 3959 | |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 3960 | static void igb_write_itr(struct igb_q_vector *q_vector) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3961 | { |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 3962 | u32 itr_val = q_vector->itr_val & 0x7FFC; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3963 | |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 3964 | if (!q_vector->set_itr) |
| 3965 | return; |
Alexander Duyck | 73cd78f | 2009-02-12 18:16:59 +0000 | [diff] [blame] | 3966 | |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 3967 | if (!itr_val) |
| 3968 | itr_val = 0x4; |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 3969 | |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 3970 | if (q_vector->itr_shift) |
| 3971 | itr_val |= itr_val << q_vector->itr_shift; |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 3972 | else |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 3973 | itr_val |= 0x8000000; |
| 3974 | |
| 3975 | writel(itr_val, q_vector->itr_register); |
| 3976 | q_vector->set_itr = 0; |
| 3977 | } |
| 3978 | |
| 3979 | static irqreturn_t igb_msix_ring(int irq, void *data) |
| 3980 | { |
| 3981 | struct igb_q_vector *q_vector = data; |
| 3982 | |
| 3983 | /* Write the ITR value calculated from the previous interrupt. */ |
| 3984 | igb_write_itr(q_vector); |
| 3985 | |
| 3986 | napi_schedule(&q_vector->napi); |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 3987 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 3988 | return IRQ_HANDLED; |
| 3989 | } |
| 3990 | |
Jeff Kirsher | 421e02f | 2008-10-17 11:08:31 -0700 | [diff] [blame] | 3991 | #ifdef CONFIG_IGB_DCA |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 3992 | static void igb_update_dca(struct igb_q_vector *q_vector) |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 3993 | { |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 3994 | struct igb_adapter *adapter = q_vector->adapter; |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 3995 | struct e1000_hw *hw = &adapter->hw; |
| 3996 | int cpu = get_cpu(); |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 3997 | |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 3998 | if (q_vector->cpu == cpu) |
| 3999 | goto out_no_update; |
| 4000 | |
| 4001 | if (q_vector->tx_ring) { |
| 4002 | int q = q_vector->tx_ring->reg_idx; |
| 4003 | u32 dca_txctrl = rd32(E1000_DCA_TXCTRL(q)); |
| 4004 | if (hw->mac.type == e1000_82575) { |
| 4005 | dca_txctrl &= ~E1000_DCA_TXCTRL_CPUID_MASK; |
| 4006 | dca_txctrl |= dca3_get_tag(&adapter->pdev->dev, cpu); |
| 4007 | } else { |
| 4008 | dca_txctrl &= ~E1000_DCA_TXCTRL_CPUID_MASK_82576; |
| 4009 | dca_txctrl |= dca3_get_tag(&adapter->pdev->dev, cpu) << |
| 4010 | E1000_DCA_TXCTRL_CPUID_SHIFT; |
| 4011 | } |
| 4012 | dca_txctrl |= E1000_DCA_TXCTRL_DESC_DCA_EN; |
| 4013 | wr32(E1000_DCA_TXCTRL(q), dca_txctrl); |
| 4014 | } |
| 4015 | if (q_vector->rx_ring) { |
| 4016 | int q = q_vector->rx_ring->reg_idx; |
| 4017 | u32 dca_rxctrl = rd32(E1000_DCA_RXCTRL(q)); |
| 4018 | if (hw->mac.type == e1000_82575) { |
| 4019 | dca_rxctrl &= ~E1000_DCA_RXCTRL_CPUID_MASK; |
| 4020 | dca_rxctrl |= dca3_get_tag(&adapter->pdev->dev, cpu); |
| 4021 | } else { |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 4022 | dca_rxctrl &= ~E1000_DCA_RXCTRL_CPUID_MASK_82576; |
Maciej Sosnowski | 92be791 | 2009-03-13 20:40:21 +0000 | [diff] [blame] | 4023 | dca_rxctrl |= dca3_get_tag(&adapter->pdev->dev, cpu) << |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 4024 | E1000_DCA_RXCTRL_CPUID_SHIFT; |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 4025 | } |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 4026 | dca_rxctrl |= E1000_DCA_RXCTRL_DESC_DCA_EN; |
| 4027 | dca_rxctrl |= E1000_DCA_RXCTRL_HEAD_DCA_EN; |
| 4028 | dca_rxctrl |= E1000_DCA_RXCTRL_DATA_DCA_EN; |
| 4029 | wr32(E1000_DCA_RXCTRL(q), dca_rxctrl); |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 4030 | } |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 4031 | q_vector->cpu = cpu; |
| 4032 | out_no_update: |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 4033 | put_cpu(); |
| 4034 | } |
| 4035 | |
| 4036 | static void igb_setup_dca(struct igb_adapter *adapter) |
| 4037 | { |
Alexander Duyck | 7e0e99e | 2009-05-21 13:06:56 +0000 | [diff] [blame] | 4038 | struct e1000_hw *hw = &adapter->hw; |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 4039 | int i; |
| 4040 | |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 4041 | if (!(adapter->flags & IGB_FLAG_DCA_ENABLED)) |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 4042 | return; |
| 4043 | |
Alexander Duyck | 7e0e99e | 2009-05-21 13:06:56 +0000 | [diff] [blame] | 4044 | /* Always use CB2 mode, difference is masked in the CB driver. */ |
| 4045 | wr32(E1000_DCA_CTRL, E1000_DCA_CTRL_DCA_MODE_CB2); |
| 4046 | |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 4047 | for (i = 0; i < adapter->num_q_vectors; i++) { |
| 4048 | struct igb_q_vector *q_vector = adapter->q_vector[i]; |
| 4049 | q_vector->cpu = -1; |
| 4050 | igb_update_dca(q_vector); |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 4051 | } |
| 4052 | } |
| 4053 | |
| 4054 | static int __igb_notify_dca(struct device *dev, void *data) |
| 4055 | { |
| 4056 | struct net_device *netdev = dev_get_drvdata(dev); |
| 4057 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 4058 | struct e1000_hw *hw = &adapter->hw; |
| 4059 | unsigned long event = *(unsigned long *)data; |
| 4060 | |
| 4061 | switch (event) { |
| 4062 | case DCA_PROVIDER_ADD: |
| 4063 | /* if already enabled, don't do it again */ |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 4064 | if (adapter->flags & IGB_FLAG_DCA_ENABLED) |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 4065 | break; |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 4066 | /* Always use CB2 mode, difference is masked |
| 4067 | * in the CB driver. */ |
Alexander Duyck | cbd347a | 2009-02-15 23:59:44 -0800 | [diff] [blame] | 4068 | wr32(E1000_DCA_CTRL, E1000_DCA_CTRL_DCA_MODE_CB2); |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 4069 | if (dca_add_requester(dev) == 0) { |
Alexander Duyck | bbd98fe | 2009-01-31 00:52:30 -0800 | [diff] [blame] | 4070 | adapter->flags |= IGB_FLAG_DCA_ENABLED; |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 4071 | dev_info(&adapter->pdev->dev, "DCA enabled\n"); |
| 4072 | igb_setup_dca(adapter); |
| 4073 | break; |
| 4074 | } |
| 4075 | /* Fall Through since DCA is disabled. */ |
| 4076 | case DCA_PROVIDER_REMOVE: |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 4077 | if (adapter->flags & IGB_FLAG_DCA_ENABLED) { |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 4078 | /* without this a class_device is left |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 4079 | * hanging around in the sysfs model */ |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 4080 | dca_remove_requester(dev); |
| 4081 | dev_info(&adapter->pdev->dev, "DCA disabled\n"); |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 4082 | adapter->flags &= ~IGB_FLAG_DCA_ENABLED; |
Alexander Duyck | cbd347a | 2009-02-15 23:59:44 -0800 | [diff] [blame] | 4083 | wr32(E1000_DCA_CTRL, E1000_DCA_CTRL_DCA_MODE_DISABLE); |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 4084 | } |
| 4085 | break; |
| 4086 | } |
Alexander Duyck | bbd98fe | 2009-01-31 00:52:30 -0800 | [diff] [blame] | 4087 | |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 4088 | return 0; |
| 4089 | } |
| 4090 | |
| 4091 | static int igb_notify_dca(struct notifier_block *nb, unsigned long event, |
| 4092 | void *p) |
| 4093 | { |
| 4094 | int ret_val; |
| 4095 | |
| 4096 | ret_val = driver_for_each_device(&igb_driver.driver, NULL, &event, |
| 4097 | __igb_notify_dca); |
| 4098 | |
| 4099 | return ret_val ? NOTIFY_BAD : NOTIFY_DONE; |
| 4100 | } |
Jeff Kirsher | 421e02f | 2008-10-17 11:08:31 -0700 | [diff] [blame] | 4101 | #endif /* CONFIG_IGB_DCA */ |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4102 | |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 4103 | static void igb_ping_all_vfs(struct igb_adapter *adapter) |
| 4104 | { |
| 4105 | struct e1000_hw *hw = &adapter->hw; |
| 4106 | u32 ping; |
| 4107 | int i; |
| 4108 | |
| 4109 | for (i = 0 ; i < adapter->vfs_allocated_count; i++) { |
| 4110 | ping = E1000_PF_CONTROL_MSG; |
Alexander Duyck | f2ca0db | 2009-10-27 23:46:57 +0000 | [diff] [blame] | 4111 | if (adapter->vf_data[i].flags & IGB_VF_FLAG_CTS) |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 4112 | ping |= E1000_VT_MSGTYPE_CTS; |
| 4113 | igb_write_mbx(hw, &ping, 1, i); |
| 4114 | } |
| 4115 | } |
| 4116 | |
Alexander Duyck | 7d5753f | 2009-10-27 23:47:16 +0000 | [diff] [blame] | 4117 | static int igb_set_vf_promisc(struct igb_adapter *adapter, u32 *msgbuf, u32 vf) |
| 4118 | { |
| 4119 | struct e1000_hw *hw = &adapter->hw; |
| 4120 | u32 vmolr = rd32(E1000_VMOLR(vf)); |
| 4121 | struct vf_data_storage *vf_data = &adapter->vf_data[vf]; |
| 4122 | |
| 4123 | vf_data->flags |= ~(IGB_VF_FLAG_UNI_PROMISC | |
| 4124 | IGB_VF_FLAG_MULTI_PROMISC); |
| 4125 | vmolr &= ~(E1000_VMOLR_ROPE | E1000_VMOLR_ROMPE | E1000_VMOLR_MPME); |
| 4126 | |
| 4127 | if (*msgbuf & E1000_VF_SET_PROMISC_MULTICAST) { |
| 4128 | vmolr |= E1000_VMOLR_MPME; |
| 4129 | *msgbuf &= ~E1000_VF_SET_PROMISC_MULTICAST; |
| 4130 | } else { |
| 4131 | /* |
| 4132 | * if we have hashes and we are clearing a multicast promisc |
| 4133 | * flag we need to write the hashes to the MTA as this step |
| 4134 | * was previously skipped |
| 4135 | */ |
| 4136 | if (vf_data->num_vf_mc_hashes > 30) { |
| 4137 | vmolr |= E1000_VMOLR_MPME; |
| 4138 | } else if (vf_data->num_vf_mc_hashes) { |
| 4139 | int j; |
| 4140 | vmolr |= E1000_VMOLR_ROMPE; |
| 4141 | for (j = 0; j < vf_data->num_vf_mc_hashes; j++) |
| 4142 | igb_mta_set(hw, vf_data->vf_mc_hashes[j]); |
| 4143 | } |
| 4144 | } |
| 4145 | |
| 4146 | wr32(E1000_VMOLR(vf), vmolr); |
| 4147 | |
| 4148 | /* there are flags left unprocessed, likely not supported */ |
| 4149 | if (*msgbuf & E1000_VT_MSGINFO_MASK) |
| 4150 | return -EINVAL; |
| 4151 | |
| 4152 | return 0; |
| 4153 | |
| 4154 | } |
| 4155 | |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 4156 | static int igb_set_vf_multicasts(struct igb_adapter *adapter, |
| 4157 | u32 *msgbuf, u32 vf) |
| 4158 | { |
| 4159 | int n = (msgbuf[0] & E1000_VT_MSGINFO_MASK) >> E1000_VT_MSGINFO_SHIFT; |
| 4160 | u16 *hash_list = (u16 *)&msgbuf[1]; |
| 4161 | struct vf_data_storage *vf_data = &adapter->vf_data[vf]; |
| 4162 | int i; |
| 4163 | |
Alexander Duyck | 7d5753f | 2009-10-27 23:47:16 +0000 | [diff] [blame] | 4164 | /* salt away the number of multicast addresses assigned |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 4165 | * to this VF for later use to restore when the PF multi cast |
| 4166 | * list changes |
| 4167 | */ |
| 4168 | vf_data->num_vf_mc_hashes = n; |
| 4169 | |
Alexander Duyck | 7d5753f | 2009-10-27 23:47:16 +0000 | [diff] [blame] | 4170 | /* only up to 30 hash values supported */ |
| 4171 | if (n > 30) |
| 4172 | n = 30; |
| 4173 | |
| 4174 | /* store the hashes for later use */ |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 4175 | for (i = 0; i < n; i++) |
Joe Perches | a419aef | 2009-08-18 11:18:35 -0700 | [diff] [blame] | 4176 | vf_data->vf_mc_hashes[i] = hash_list[i]; |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 4177 | |
| 4178 | /* Flush and reset the mta with the new values */ |
Alexander Duyck | ff41f8d | 2009-09-03 14:48:56 +0000 | [diff] [blame] | 4179 | igb_set_rx_mode(adapter->netdev); |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 4180 | |
| 4181 | return 0; |
| 4182 | } |
| 4183 | |
| 4184 | static void igb_restore_vf_multicasts(struct igb_adapter *adapter) |
| 4185 | { |
| 4186 | struct e1000_hw *hw = &adapter->hw; |
| 4187 | struct vf_data_storage *vf_data; |
| 4188 | int i, j; |
| 4189 | |
| 4190 | for (i = 0; i < adapter->vfs_allocated_count; i++) { |
Alexander Duyck | 7d5753f | 2009-10-27 23:47:16 +0000 | [diff] [blame] | 4191 | u32 vmolr = rd32(E1000_VMOLR(i)); |
| 4192 | vmolr &= ~(E1000_VMOLR_ROMPE | E1000_VMOLR_MPME); |
| 4193 | |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 4194 | vf_data = &adapter->vf_data[i]; |
Alexander Duyck | 7d5753f | 2009-10-27 23:47:16 +0000 | [diff] [blame] | 4195 | |
| 4196 | if ((vf_data->num_vf_mc_hashes > 30) || |
| 4197 | (vf_data->flags & IGB_VF_FLAG_MULTI_PROMISC)) { |
| 4198 | vmolr |= E1000_VMOLR_MPME; |
| 4199 | } else if (vf_data->num_vf_mc_hashes) { |
| 4200 | vmolr |= E1000_VMOLR_ROMPE; |
| 4201 | for (j = 0; j < vf_data->num_vf_mc_hashes; j++) |
| 4202 | igb_mta_set(hw, vf_data->vf_mc_hashes[j]); |
| 4203 | } |
| 4204 | wr32(E1000_VMOLR(i), vmolr); |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 4205 | } |
| 4206 | } |
| 4207 | |
| 4208 | static void igb_clear_vf_vfta(struct igb_adapter *adapter, u32 vf) |
| 4209 | { |
| 4210 | struct e1000_hw *hw = &adapter->hw; |
| 4211 | u32 pool_mask, reg, vid; |
| 4212 | int i; |
| 4213 | |
| 4214 | pool_mask = 1 << (E1000_VLVF_POOLSEL_SHIFT + vf); |
| 4215 | |
| 4216 | /* Find the vlan filter for this id */ |
| 4217 | for (i = 0; i < E1000_VLVF_ARRAY_SIZE; i++) { |
| 4218 | reg = rd32(E1000_VLVF(i)); |
| 4219 | |
| 4220 | /* remove the vf from the pool */ |
| 4221 | reg &= ~pool_mask; |
| 4222 | |
| 4223 | /* if pool is empty then remove entry from vfta */ |
| 4224 | if (!(reg & E1000_VLVF_POOLSEL_MASK) && |
| 4225 | (reg & E1000_VLVF_VLANID_ENABLE)) { |
| 4226 | reg = 0; |
| 4227 | vid = reg & E1000_VLVF_VLANID_MASK; |
| 4228 | igb_vfta_set(hw, vid, false); |
| 4229 | } |
| 4230 | |
| 4231 | wr32(E1000_VLVF(i), reg); |
| 4232 | } |
Alexander Duyck | ae641bd | 2009-09-03 14:49:33 +0000 | [diff] [blame] | 4233 | |
| 4234 | adapter->vf_data[vf].vlans_enabled = 0; |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 4235 | } |
| 4236 | |
| 4237 | static s32 igb_vlvf_set(struct igb_adapter *adapter, u32 vid, bool add, u32 vf) |
| 4238 | { |
| 4239 | struct e1000_hw *hw = &adapter->hw; |
| 4240 | u32 reg, i; |
| 4241 | |
Alexander Duyck | 5146623 | 2009-10-27 23:47:35 +0000 | [diff] [blame] | 4242 | /* The vlvf table only exists on 82576 hardware and newer */ |
| 4243 | if (hw->mac.type < e1000_82576) |
| 4244 | return -1; |
| 4245 | |
| 4246 | /* we only need to do this if VMDq is enabled */ |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 4247 | if (!adapter->vfs_allocated_count) |
| 4248 | return -1; |
| 4249 | |
| 4250 | /* Find the vlan filter for this id */ |
| 4251 | for (i = 0; i < E1000_VLVF_ARRAY_SIZE; i++) { |
| 4252 | reg = rd32(E1000_VLVF(i)); |
| 4253 | if ((reg & E1000_VLVF_VLANID_ENABLE) && |
| 4254 | vid == (reg & E1000_VLVF_VLANID_MASK)) |
| 4255 | break; |
| 4256 | } |
| 4257 | |
| 4258 | if (add) { |
| 4259 | if (i == E1000_VLVF_ARRAY_SIZE) { |
| 4260 | /* Did not find a matching VLAN ID entry that was |
| 4261 | * enabled. Search for a free filter entry, i.e. |
| 4262 | * one without the enable bit set |
| 4263 | */ |
| 4264 | for (i = 0; i < E1000_VLVF_ARRAY_SIZE; i++) { |
| 4265 | reg = rd32(E1000_VLVF(i)); |
| 4266 | if (!(reg & E1000_VLVF_VLANID_ENABLE)) |
| 4267 | break; |
| 4268 | } |
| 4269 | } |
| 4270 | if (i < E1000_VLVF_ARRAY_SIZE) { |
| 4271 | /* Found an enabled/available entry */ |
| 4272 | reg |= 1 << (E1000_VLVF_POOLSEL_SHIFT + vf); |
| 4273 | |
| 4274 | /* if !enabled we need to set this up in vfta */ |
| 4275 | if (!(reg & E1000_VLVF_VLANID_ENABLE)) { |
Alexander Duyck | 5146623 | 2009-10-27 23:47:35 +0000 | [diff] [blame] | 4276 | /* add VID to filter table */ |
| 4277 | igb_vfta_set(hw, vid, true); |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 4278 | reg |= E1000_VLVF_VLANID_ENABLE; |
| 4279 | } |
Alexander Duyck | cad6d05 | 2009-03-13 20:41:37 +0000 | [diff] [blame] | 4280 | reg &= ~E1000_VLVF_VLANID_MASK; |
| 4281 | reg |= vid; |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 4282 | wr32(E1000_VLVF(i), reg); |
Alexander Duyck | ae641bd | 2009-09-03 14:49:33 +0000 | [diff] [blame] | 4283 | |
| 4284 | /* do not modify RLPML for PF devices */ |
| 4285 | if (vf >= adapter->vfs_allocated_count) |
| 4286 | return 0; |
| 4287 | |
| 4288 | if (!adapter->vf_data[vf].vlans_enabled) { |
| 4289 | u32 size; |
| 4290 | reg = rd32(E1000_VMOLR(vf)); |
| 4291 | size = reg & E1000_VMOLR_RLPML_MASK; |
| 4292 | size += 4; |
| 4293 | reg &= ~E1000_VMOLR_RLPML_MASK; |
| 4294 | reg |= size; |
| 4295 | wr32(E1000_VMOLR(vf), reg); |
| 4296 | } |
Alexander Duyck | ae641bd | 2009-09-03 14:49:33 +0000 | [diff] [blame] | 4297 | |
Alexander Duyck | 5146623 | 2009-10-27 23:47:35 +0000 | [diff] [blame] | 4298 | adapter->vf_data[vf].vlans_enabled++; |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 4299 | return 0; |
| 4300 | } |
| 4301 | } else { |
| 4302 | if (i < E1000_VLVF_ARRAY_SIZE) { |
| 4303 | /* remove vf from the pool */ |
| 4304 | reg &= ~(1 << (E1000_VLVF_POOLSEL_SHIFT + vf)); |
| 4305 | /* if pool is empty then remove entry from vfta */ |
| 4306 | if (!(reg & E1000_VLVF_POOLSEL_MASK)) { |
| 4307 | reg = 0; |
| 4308 | igb_vfta_set(hw, vid, false); |
| 4309 | } |
| 4310 | wr32(E1000_VLVF(i), reg); |
Alexander Duyck | ae641bd | 2009-09-03 14:49:33 +0000 | [diff] [blame] | 4311 | |
| 4312 | /* do not modify RLPML for PF devices */ |
| 4313 | if (vf >= adapter->vfs_allocated_count) |
| 4314 | return 0; |
| 4315 | |
| 4316 | adapter->vf_data[vf].vlans_enabled--; |
| 4317 | if (!adapter->vf_data[vf].vlans_enabled) { |
| 4318 | u32 size; |
| 4319 | reg = rd32(E1000_VMOLR(vf)); |
| 4320 | size = reg & E1000_VMOLR_RLPML_MASK; |
| 4321 | size -= 4; |
| 4322 | reg &= ~E1000_VMOLR_RLPML_MASK; |
| 4323 | reg |= size; |
| 4324 | wr32(E1000_VMOLR(vf), reg); |
| 4325 | } |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 4326 | return 0; |
| 4327 | } |
| 4328 | } |
| 4329 | return -1; |
| 4330 | } |
| 4331 | |
| 4332 | static int igb_set_vf_vlan(struct igb_adapter *adapter, u32 *msgbuf, u32 vf) |
| 4333 | { |
| 4334 | int add = (msgbuf[0] & E1000_VT_MSGINFO_MASK) >> E1000_VT_MSGINFO_SHIFT; |
| 4335 | int vid = (msgbuf[1] & E1000_VLVF_VLANID_MASK); |
| 4336 | |
| 4337 | return igb_vlvf_set(adapter, vid, add, vf); |
| 4338 | } |
| 4339 | |
Alexander Duyck | f2ca0db | 2009-10-27 23:46:57 +0000 | [diff] [blame] | 4340 | static inline void igb_vf_reset(struct igb_adapter *adapter, u32 vf) |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 4341 | { |
Alexander Duyck | f2ca0db | 2009-10-27 23:46:57 +0000 | [diff] [blame] | 4342 | /* clear all flags */ |
| 4343 | adapter->vf_data[vf].flags = 0; |
| 4344 | adapter->vf_data[vf].last_nack = jiffies; |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 4345 | |
| 4346 | /* reset offloads to defaults */ |
Alexander Duyck | 7d5753f | 2009-10-27 23:47:16 +0000 | [diff] [blame] | 4347 | igb_set_vmolr(adapter, vf); |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 4348 | |
| 4349 | /* reset vlans for device */ |
| 4350 | igb_clear_vf_vfta(adapter, vf); |
| 4351 | |
| 4352 | /* reset multicast table array for vf */ |
| 4353 | adapter->vf_data[vf].num_vf_mc_hashes = 0; |
| 4354 | |
| 4355 | /* Flush and reset the mta with the new values */ |
Alexander Duyck | ff41f8d | 2009-09-03 14:48:56 +0000 | [diff] [blame] | 4356 | igb_set_rx_mode(adapter->netdev); |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 4357 | } |
| 4358 | |
Alexander Duyck | f2ca0db | 2009-10-27 23:46:57 +0000 | [diff] [blame] | 4359 | static void igb_vf_reset_event(struct igb_adapter *adapter, u32 vf) |
| 4360 | { |
| 4361 | unsigned char *vf_mac = adapter->vf_data[vf].vf_mac_addresses; |
| 4362 | |
| 4363 | /* generate a new mac address as we were hotplug removed/added */ |
| 4364 | random_ether_addr(vf_mac); |
| 4365 | |
| 4366 | /* process remaining reset events */ |
| 4367 | igb_vf_reset(adapter, vf); |
| 4368 | } |
| 4369 | |
| 4370 | static void igb_vf_reset_msg(struct igb_adapter *adapter, u32 vf) |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 4371 | { |
| 4372 | struct e1000_hw *hw = &adapter->hw; |
| 4373 | unsigned char *vf_mac = adapter->vf_data[vf].vf_mac_addresses; |
Alexander Duyck | ff41f8d | 2009-09-03 14:48:56 +0000 | [diff] [blame] | 4374 | int rar_entry = hw->mac.rar_entry_count - (vf + 1); |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 4375 | u32 reg, msgbuf[3]; |
| 4376 | u8 *addr = (u8 *)(&msgbuf[1]); |
| 4377 | |
| 4378 | /* process all the same items cleared in a function level reset */ |
Alexander Duyck | f2ca0db | 2009-10-27 23:46:57 +0000 | [diff] [blame] | 4379 | igb_vf_reset(adapter, vf); |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 4380 | |
| 4381 | /* set vf mac address */ |
Alexander Duyck | 26ad917 | 2009-10-05 06:32:49 +0000 | [diff] [blame] | 4382 | igb_rar_set_qsel(adapter, vf_mac, rar_entry, vf); |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 4383 | |
| 4384 | /* enable transmit and receive for vf */ |
| 4385 | reg = rd32(E1000_VFTE); |
| 4386 | wr32(E1000_VFTE, reg | (1 << vf)); |
| 4387 | reg = rd32(E1000_VFRE); |
| 4388 | wr32(E1000_VFRE, reg | (1 << vf)); |
| 4389 | |
Alexander Duyck | f2ca0db | 2009-10-27 23:46:57 +0000 | [diff] [blame] | 4390 | adapter->vf_data[vf].flags = IGB_VF_FLAG_CTS; |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 4391 | |
| 4392 | /* reply to reset with ack and vf mac address */ |
| 4393 | msgbuf[0] = E1000_VF_RESET | E1000_VT_MSGTYPE_ACK; |
| 4394 | memcpy(addr, vf_mac, 6); |
| 4395 | igb_write_mbx(hw, msgbuf, 3, vf); |
| 4396 | } |
| 4397 | |
| 4398 | static int igb_set_vf_mac_addr(struct igb_adapter *adapter, u32 *msg, int vf) |
| 4399 | { |
Alexander Duyck | f2ca0db | 2009-10-27 23:46:57 +0000 | [diff] [blame] | 4400 | unsigned char *addr = (char *)&msg[1]; |
| 4401 | int err = -1; |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 4402 | |
Alexander Duyck | f2ca0db | 2009-10-27 23:46:57 +0000 | [diff] [blame] | 4403 | if (is_valid_ether_addr(addr)) |
| 4404 | err = igb_set_vf_mac(adapter, vf, addr); |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 4405 | |
Alexander Duyck | f2ca0db | 2009-10-27 23:46:57 +0000 | [diff] [blame] | 4406 | return err; |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 4407 | } |
| 4408 | |
| 4409 | static void igb_rcv_ack_from_vf(struct igb_adapter *adapter, u32 vf) |
| 4410 | { |
| 4411 | struct e1000_hw *hw = &adapter->hw; |
Alexander Duyck | f2ca0db | 2009-10-27 23:46:57 +0000 | [diff] [blame] | 4412 | struct vf_data_storage *vf_data = &adapter->vf_data[vf]; |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 4413 | u32 msg = E1000_VT_MSGTYPE_NACK; |
| 4414 | |
| 4415 | /* if device isn't clear to send it shouldn't be reading either */ |
Alexander Duyck | f2ca0db | 2009-10-27 23:46:57 +0000 | [diff] [blame] | 4416 | if (!(vf_data->flags & IGB_VF_FLAG_CTS) && |
| 4417 | time_after(jiffies, vf_data->last_nack + (2 * HZ))) { |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 4418 | igb_write_mbx(hw, &msg, 1, vf); |
Alexander Duyck | f2ca0db | 2009-10-27 23:46:57 +0000 | [diff] [blame] | 4419 | vf_data->last_nack = jiffies; |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 4420 | } |
| 4421 | } |
| 4422 | |
Alexander Duyck | f2ca0db | 2009-10-27 23:46:57 +0000 | [diff] [blame] | 4423 | static void igb_rcv_msg_from_vf(struct igb_adapter *adapter, u32 vf) |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 4424 | { |
Alexander Duyck | f2ca0db | 2009-10-27 23:46:57 +0000 | [diff] [blame] | 4425 | struct pci_dev *pdev = adapter->pdev; |
| 4426 | u32 msgbuf[E1000_VFMAILBOX_SIZE]; |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 4427 | struct e1000_hw *hw = &adapter->hw; |
Alexander Duyck | f2ca0db | 2009-10-27 23:46:57 +0000 | [diff] [blame] | 4428 | struct vf_data_storage *vf_data = &adapter->vf_data[vf]; |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 4429 | s32 retval; |
| 4430 | |
Alexander Duyck | f2ca0db | 2009-10-27 23:46:57 +0000 | [diff] [blame] | 4431 | retval = igb_read_mbx(hw, msgbuf, E1000_VFMAILBOX_SIZE, vf); |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 4432 | |
| 4433 | if (retval) |
Alexander Duyck | f2ca0db | 2009-10-27 23:46:57 +0000 | [diff] [blame] | 4434 | dev_err(&pdev->dev, "Error receiving message from VF\n"); |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 4435 | |
| 4436 | /* this is a message we already processed, do nothing */ |
| 4437 | if (msgbuf[0] & (E1000_VT_MSGTYPE_ACK | E1000_VT_MSGTYPE_NACK)) |
Alexander Duyck | f2ca0db | 2009-10-27 23:46:57 +0000 | [diff] [blame] | 4438 | return; |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 4439 | |
| 4440 | /* |
| 4441 | * until the vf completes a reset it should not be |
| 4442 | * allowed to start any configuration. |
| 4443 | */ |
| 4444 | |
| 4445 | if (msgbuf[0] == E1000_VF_RESET) { |
| 4446 | igb_vf_reset_msg(adapter, vf); |
Alexander Duyck | f2ca0db | 2009-10-27 23:46:57 +0000 | [diff] [blame] | 4447 | return; |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 4448 | } |
| 4449 | |
Alexander Duyck | f2ca0db | 2009-10-27 23:46:57 +0000 | [diff] [blame] | 4450 | if (!(vf_data->flags & IGB_VF_FLAG_CTS)) { |
| 4451 | msgbuf[0] = E1000_VT_MSGTYPE_NACK; |
| 4452 | if (time_after(jiffies, vf_data->last_nack + (2 * HZ))) { |
| 4453 | igb_write_mbx(hw, msgbuf, 1, vf); |
| 4454 | vf_data->last_nack = jiffies; |
| 4455 | } |
| 4456 | return; |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 4457 | } |
| 4458 | |
| 4459 | switch ((msgbuf[0] & 0xFFFF)) { |
| 4460 | case E1000_VF_SET_MAC_ADDR: |
| 4461 | retval = igb_set_vf_mac_addr(adapter, msgbuf, vf); |
| 4462 | break; |
Alexander Duyck | 7d5753f | 2009-10-27 23:47:16 +0000 | [diff] [blame] | 4463 | case E1000_VF_SET_PROMISC: |
| 4464 | retval = igb_set_vf_promisc(adapter, msgbuf, vf); |
| 4465 | break; |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 4466 | case E1000_VF_SET_MULTICAST: |
| 4467 | retval = igb_set_vf_multicasts(adapter, msgbuf, vf); |
| 4468 | break; |
| 4469 | case E1000_VF_SET_LPE: |
| 4470 | retval = igb_set_vf_rlpml(adapter, msgbuf[1], vf); |
| 4471 | break; |
| 4472 | case E1000_VF_SET_VLAN: |
| 4473 | retval = igb_set_vf_vlan(adapter, msgbuf, vf); |
| 4474 | break; |
| 4475 | default: |
| 4476 | dev_err(&adapter->pdev->dev, "Unhandled Msg %08x\n", msgbuf[0]); |
| 4477 | retval = -1; |
| 4478 | break; |
| 4479 | } |
| 4480 | |
| 4481 | /* notify the VF of the results of what it sent us */ |
| 4482 | if (retval) |
| 4483 | msgbuf[0] |= E1000_VT_MSGTYPE_NACK; |
| 4484 | else |
| 4485 | msgbuf[0] |= E1000_VT_MSGTYPE_ACK; |
| 4486 | |
| 4487 | msgbuf[0] |= E1000_VT_MSGTYPE_CTS; |
| 4488 | |
| 4489 | igb_write_mbx(hw, msgbuf, 1, vf); |
Alexander Duyck | f2ca0db | 2009-10-27 23:46:57 +0000 | [diff] [blame] | 4490 | } |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 4491 | |
Alexander Duyck | f2ca0db | 2009-10-27 23:46:57 +0000 | [diff] [blame] | 4492 | static void igb_msg_task(struct igb_adapter *adapter) |
| 4493 | { |
| 4494 | struct e1000_hw *hw = &adapter->hw; |
| 4495 | u32 vf; |
| 4496 | |
| 4497 | for (vf = 0; vf < adapter->vfs_allocated_count; vf++) { |
| 4498 | /* process any reset requests */ |
| 4499 | if (!igb_check_for_rst(hw, vf)) |
| 4500 | igb_vf_reset_event(adapter, vf); |
| 4501 | |
| 4502 | /* process any messages pending */ |
| 4503 | if (!igb_check_for_msg(hw, vf)) |
| 4504 | igb_rcv_msg_from_vf(adapter, vf); |
| 4505 | |
| 4506 | /* process any acks */ |
| 4507 | if (!igb_check_for_ack(hw, vf)) |
| 4508 | igb_rcv_ack_from_vf(adapter, vf); |
| 4509 | } |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 4510 | } |
| 4511 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4512 | /** |
Alexander Duyck | 68d480c | 2009-10-05 06:33:08 +0000 | [diff] [blame] | 4513 | * igb_set_uta - Set unicast filter table address |
| 4514 | * @adapter: board private structure |
| 4515 | * |
| 4516 | * The unicast table address is a register array of 32-bit registers. |
| 4517 | * The table is meant to be used in a way similar to how the MTA is used |
| 4518 | * however due to certain limitations in the hardware it is necessary to |
| 4519 | * set all the hash bits to 1 and use the VMOLR ROPE bit as a promiscous |
| 4520 | * enable bit to allow vlan tag stripping when promiscous mode is enabled |
| 4521 | **/ |
| 4522 | static void igb_set_uta(struct igb_adapter *adapter) |
| 4523 | { |
| 4524 | struct e1000_hw *hw = &adapter->hw; |
| 4525 | int i; |
| 4526 | |
| 4527 | /* The UTA table only exists on 82576 hardware and newer */ |
| 4528 | if (hw->mac.type < e1000_82576) |
| 4529 | return; |
| 4530 | |
| 4531 | /* we only need to do this if VMDq is enabled */ |
| 4532 | if (!adapter->vfs_allocated_count) |
| 4533 | return; |
| 4534 | |
| 4535 | for (i = 0; i < hw->mac.uta_reg_count; i++) |
| 4536 | array_wr32(E1000_UTA, i, ~0); |
| 4537 | } |
| 4538 | |
| 4539 | /** |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4540 | * igb_intr_msi - Interrupt Handler |
| 4541 | * @irq: interrupt number |
| 4542 | * @data: pointer to a network interface device structure |
| 4543 | **/ |
| 4544 | static irqreturn_t igb_intr_msi(int irq, void *data) |
| 4545 | { |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 4546 | struct igb_adapter *adapter = data; |
| 4547 | struct igb_q_vector *q_vector = adapter->q_vector[0]; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4548 | struct e1000_hw *hw = &adapter->hw; |
| 4549 | /* read ICR disables interrupts using IAM */ |
| 4550 | u32 icr = rd32(E1000_ICR); |
| 4551 | |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 4552 | igb_write_itr(q_vector); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4553 | |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 4554 | if (icr & E1000_ICR_DOUTSYNC) { |
Alexander Duyck | dda0e08 | 2009-02-06 23:19:08 +0000 | [diff] [blame] | 4555 | /* HW is reporting DMA is out of sync */ |
| 4556 | adapter->stats.doosync++; |
| 4557 | } |
| 4558 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4559 | if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) { |
| 4560 | hw->mac.get_link_status = 1; |
| 4561 | if (!test_bit(__IGB_DOWN, &adapter->state)) |
| 4562 | mod_timer(&adapter->watchdog_timer, jiffies + 1); |
| 4563 | } |
| 4564 | |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 4565 | napi_schedule(&q_vector->napi); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4566 | |
| 4567 | return IRQ_HANDLED; |
| 4568 | } |
| 4569 | |
| 4570 | /** |
Alexander Duyck | 4a3c643 | 2009-02-06 23:20:49 +0000 | [diff] [blame] | 4571 | * igb_intr - Legacy Interrupt Handler |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4572 | * @irq: interrupt number |
| 4573 | * @data: pointer to a network interface device structure |
| 4574 | **/ |
| 4575 | static irqreturn_t igb_intr(int irq, void *data) |
| 4576 | { |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 4577 | struct igb_adapter *adapter = data; |
| 4578 | struct igb_q_vector *q_vector = adapter->q_vector[0]; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4579 | struct e1000_hw *hw = &adapter->hw; |
| 4580 | /* Interrupt Auto-Mask...upon reading ICR, interrupts are masked. No |
| 4581 | * need for the IMC write */ |
| 4582 | u32 icr = rd32(E1000_ICR); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4583 | if (!icr) |
| 4584 | return IRQ_NONE; /* Not our interrupt */ |
| 4585 | |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 4586 | igb_write_itr(q_vector); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4587 | |
| 4588 | /* IMS will not auto-mask if INT_ASSERTED is not set, and if it is |
| 4589 | * not set, then the adapter didn't send an interrupt */ |
| 4590 | if (!(icr & E1000_ICR_INT_ASSERTED)) |
| 4591 | return IRQ_NONE; |
| 4592 | |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 4593 | if (icr & E1000_ICR_DOUTSYNC) { |
Alexander Duyck | dda0e08 | 2009-02-06 23:19:08 +0000 | [diff] [blame] | 4594 | /* HW is reporting DMA is out of sync */ |
| 4595 | adapter->stats.doosync++; |
| 4596 | } |
| 4597 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4598 | if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) { |
| 4599 | hw->mac.get_link_status = 1; |
| 4600 | /* guard against interrupt when we're going down */ |
| 4601 | if (!test_bit(__IGB_DOWN, &adapter->state)) |
| 4602 | mod_timer(&adapter->watchdog_timer, jiffies + 1); |
| 4603 | } |
| 4604 | |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 4605 | napi_schedule(&q_vector->napi); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4606 | |
| 4607 | return IRQ_HANDLED; |
| 4608 | } |
| 4609 | |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 4610 | static inline void igb_ring_irq_enable(struct igb_q_vector *q_vector) |
Alexander Duyck | 4654425 | 2009-02-19 20:39:04 -0800 | [diff] [blame] | 4611 | { |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 4612 | struct igb_adapter *adapter = q_vector->adapter; |
Alexander Duyck | 4654425 | 2009-02-19 20:39:04 -0800 | [diff] [blame] | 4613 | struct e1000_hw *hw = &adapter->hw; |
| 4614 | |
Alexander Duyck | 4fc82ad | 2009-10-27 23:45:42 +0000 | [diff] [blame] | 4615 | if ((q_vector->rx_ring && (adapter->rx_itr_setting & 3)) || |
| 4616 | (!q_vector->rx_ring && (adapter->tx_itr_setting & 3))) { |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 4617 | if (!adapter->msix_entries) |
Alexander Duyck | 4654425 | 2009-02-19 20:39:04 -0800 | [diff] [blame] | 4618 | igb_set_itr(adapter); |
| 4619 | else |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 4620 | igb_update_ring_itr(q_vector); |
Alexander Duyck | 4654425 | 2009-02-19 20:39:04 -0800 | [diff] [blame] | 4621 | } |
| 4622 | |
| 4623 | if (!test_bit(__IGB_DOWN, &adapter->state)) { |
| 4624 | if (adapter->msix_entries) |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 4625 | wr32(E1000_EIMS, q_vector->eims_value); |
Alexander Duyck | 4654425 | 2009-02-19 20:39:04 -0800 | [diff] [blame] | 4626 | else |
| 4627 | igb_irq_enable(adapter); |
| 4628 | } |
| 4629 | } |
| 4630 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4631 | /** |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 4632 | * igb_poll - NAPI Rx polling callback |
| 4633 | * @napi: napi polling structure |
| 4634 | * @budget: count of how many packets we should handle |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4635 | **/ |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 4636 | static int igb_poll(struct napi_struct *napi, int budget) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4637 | { |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 4638 | struct igb_q_vector *q_vector = container_of(napi, |
| 4639 | struct igb_q_vector, |
| 4640 | napi); |
| 4641 | int tx_clean_complete = 1, work_done = 0; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4642 | |
Jeff Kirsher | 421e02f | 2008-10-17 11:08:31 -0700 | [diff] [blame] | 4643 | #ifdef CONFIG_IGB_DCA |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 4644 | if (q_vector->adapter->flags & IGB_FLAG_DCA_ENABLED) |
| 4645 | igb_update_dca(q_vector); |
Jeb Cramer | fe4506b | 2008-07-08 15:07:55 -0700 | [diff] [blame] | 4646 | #endif |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 4647 | if (q_vector->tx_ring) |
| 4648 | tx_clean_complete = igb_clean_tx_irq(q_vector); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4649 | |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 4650 | if (q_vector->rx_ring) |
| 4651 | igb_clean_rx_irq_adv(q_vector, &work_done, budget); |
| 4652 | |
| 4653 | if (!tx_clean_complete) |
| 4654 | work_done = budget; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4655 | |
Alexander Duyck | 4654425 | 2009-02-19 20:39:04 -0800 | [diff] [blame] | 4656 | /* If not enough Rx work done, exit the polling mode */ |
Alexander Duyck | 5e6d5b1 | 2009-03-13 20:40:38 +0000 | [diff] [blame] | 4657 | if (work_done < budget) { |
Alexander Duyck | 4654425 | 2009-02-19 20:39:04 -0800 | [diff] [blame] | 4658 | napi_complete(napi); |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 4659 | igb_ring_irq_enable(q_vector); |
Alexander Duyck | 4654425 | 2009-02-19 20:39:04 -0800 | [diff] [blame] | 4660 | } |
| 4661 | |
| 4662 | return work_done; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4663 | } |
Al Viro | 6d8126f | 2008-03-16 22:23:24 +0000 | [diff] [blame] | 4664 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4665 | /** |
Alexander Duyck | c5b9bd5 | 2009-10-27 23:46:01 +0000 | [diff] [blame] | 4666 | * igb_systim_to_hwtstamp - convert system time value to hw timestamp |
Patrick Ohly | 33af6bc | 2009-02-12 05:03:43 +0000 | [diff] [blame] | 4667 | * @adapter: board private structure |
Alexander Duyck | c5b9bd5 | 2009-10-27 23:46:01 +0000 | [diff] [blame] | 4668 | * @shhwtstamps: timestamp structure to update |
| 4669 | * @regval: unsigned 64bit system time value. |
| 4670 | * |
| 4671 | * We need to convert the system time value stored in the RX/TXSTMP registers |
| 4672 | * into a hwtstamp which can be used by the upper level timestamping functions |
| 4673 | */ |
| 4674 | static void igb_systim_to_hwtstamp(struct igb_adapter *adapter, |
| 4675 | struct skb_shared_hwtstamps *shhwtstamps, |
| 4676 | u64 regval) |
| 4677 | { |
| 4678 | u64 ns; |
| 4679 | |
| 4680 | ns = timecounter_cyc2time(&adapter->clock, regval); |
| 4681 | timecompare_update(&adapter->compare, ns); |
| 4682 | memset(shhwtstamps, 0, sizeof(struct skb_shared_hwtstamps)); |
| 4683 | shhwtstamps->hwtstamp = ns_to_ktime(ns); |
| 4684 | shhwtstamps->syststamp = timecompare_transform(&adapter->compare, ns); |
| 4685 | } |
| 4686 | |
| 4687 | /** |
| 4688 | * igb_tx_hwtstamp - utility function which checks for TX time stamp |
| 4689 | * @q_vector: pointer to q_vector containing needed info |
Patrick Ohly | 33af6bc | 2009-02-12 05:03:43 +0000 | [diff] [blame] | 4690 | * @skb: packet that was just sent |
| 4691 | * |
| 4692 | * If we were asked to do hardware stamping and such a time stamp is |
| 4693 | * available, then it must have been for this skb here because we only |
| 4694 | * allow only one such packet into the queue. |
| 4695 | */ |
Alexander Duyck | c5b9bd5 | 2009-10-27 23:46:01 +0000 | [diff] [blame] | 4696 | static void igb_tx_hwtstamp(struct igb_q_vector *q_vector, struct sk_buff *skb) |
Patrick Ohly | 33af6bc | 2009-02-12 05:03:43 +0000 | [diff] [blame] | 4697 | { |
Alexander Duyck | c5b9bd5 | 2009-10-27 23:46:01 +0000 | [diff] [blame] | 4698 | struct igb_adapter *adapter = q_vector->adapter; |
Patrick Ohly | 33af6bc | 2009-02-12 05:03:43 +0000 | [diff] [blame] | 4699 | union skb_shared_tx *shtx = skb_tx(skb); |
| 4700 | struct e1000_hw *hw = &adapter->hw; |
Alexander Duyck | c5b9bd5 | 2009-10-27 23:46:01 +0000 | [diff] [blame] | 4701 | struct skb_shared_hwtstamps shhwtstamps; |
| 4702 | u64 regval; |
Patrick Ohly | 33af6bc | 2009-02-12 05:03:43 +0000 | [diff] [blame] | 4703 | |
Alexander Duyck | c5b9bd5 | 2009-10-27 23:46:01 +0000 | [diff] [blame] | 4704 | /* if skb does not support hw timestamp or TX stamp not valid exit */ |
| 4705 | if (likely(!shtx->hardware) || |
| 4706 | !(rd32(E1000_TSYNCTXCTL) & E1000_TSYNCTXCTL_VALID)) |
| 4707 | return; |
Patrick Ohly | 33af6bc | 2009-02-12 05:03:43 +0000 | [diff] [blame] | 4708 | |
Alexander Duyck | c5b9bd5 | 2009-10-27 23:46:01 +0000 | [diff] [blame] | 4709 | regval = rd32(E1000_TXSTMPL); |
| 4710 | regval |= (u64)rd32(E1000_TXSTMPH) << 32; |
| 4711 | |
| 4712 | igb_systim_to_hwtstamp(adapter, &shhwtstamps, regval); |
| 4713 | skb_tstamp_tx(skb, &shhwtstamps); |
Patrick Ohly | 33af6bc | 2009-02-12 05:03:43 +0000 | [diff] [blame] | 4714 | } |
| 4715 | |
| 4716 | /** |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4717 | * igb_clean_tx_irq - Reclaim resources after transmit completes |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 4718 | * @q_vector: pointer to q_vector containing needed info |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4719 | * returns true if ring is completely cleaned |
| 4720 | **/ |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 4721 | static bool igb_clean_tx_irq(struct igb_q_vector *q_vector) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4722 | { |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 4723 | struct igb_adapter *adapter = q_vector->adapter; |
| 4724 | struct igb_ring *tx_ring = q_vector->tx_ring; |
Alexander Duyck | e694e96 | 2009-10-27 15:53:06 +0000 | [diff] [blame] | 4725 | struct net_device *netdev = tx_ring->netdev; |
Alexander Duyck | 0e014cb | 2008-12-26 01:33:18 -0800 | [diff] [blame] | 4726 | struct e1000_hw *hw = &adapter->hw; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4727 | struct igb_buffer *buffer_info; |
| 4728 | struct sk_buff *skb; |
Alexander Duyck | 0e014cb | 2008-12-26 01:33:18 -0800 | [diff] [blame] | 4729 | union e1000_adv_tx_desc *tx_desc, *eop_desc; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4730 | unsigned int total_bytes = 0, total_packets = 0; |
Alexander Duyck | 0e014cb | 2008-12-26 01:33:18 -0800 | [diff] [blame] | 4731 | unsigned int i, eop, count = 0; |
| 4732 | bool cleaned = false; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4733 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4734 | i = tx_ring->next_to_clean; |
Alexander Duyck | 0e014cb | 2008-12-26 01:33:18 -0800 | [diff] [blame] | 4735 | eop = tx_ring->buffer_info[i].next_to_watch; |
| 4736 | eop_desc = E1000_TX_DESC_ADV(*tx_ring, eop); |
| 4737 | |
| 4738 | while ((eop_desc->wb.status & cpu_to_le32(E1000_TXD_STAT_DD)) && |
| 4739 | (count < tx_ring->count)) { |
| 4740 | for (cleaned = false; !cleaned; count++) { |
| 4741 | tx_desc = E1000_TX_DESC_ADV(*tx_ring, i); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4742 | buffer_info = &tx_ring->buffer_info[i]; |
Alexander Duyck | 0e014cb | 2008-12-26 01:33:18 -0800 | [diff] [blame] | 4743 | cleaned = (i == eop); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4744 | skb = buffer_info->skb; |
| 4745 | |
| 4746 | if (skb) { |
| 4747 | unsigned int segs, bytecount; |
| 4748 | /* gso_segs is currently only valid for tcp */ |
| 4749 | segs = skb_shinfo(skb)->gso_segs ?: 1; |
| 4750 | /* multiply data chunks by size of headers */ |
| 4751 | bytecount = ((segs - 1) * skb_headlen(skb)) + |
| 4752 | skb->len; |
| 4753 | total_packets += segs; |
| 4754 | total_bytes += bytecount; |
Patrick Ohly | 33af6bc | 2009-02-12 05:03:43 +0000 | [diff] [blame] | 4755 | |
Alexander Duyck | c5b9bd5 | 2009-10-27 23:46:01 +0000 | [diff] [blame] | 4756 | igb_tx_hwtstamp(q_vector, skb); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4757 | } |
| 4758 | |
Alexander Duyck | 8078529 | 2009-10-27 15:51:47 +0000 | [diff] [blame] | 4759 | igb_unmap_and_free_tx_resource(tx_ring, buffer_info); |
Alexander Duyck | 0e014cb | 2008-12-26 01:33:18 -0800 | [diff] [blame] | 4760 | tx_desc->wb.status = 0; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4761 | |
| 4762 | i++; |
| 4763 | if (i == tx_ring->count) |
| 4764 | i = 0; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4765 | } |
Alexander Duyck | 0e014cb | 2008-12-26 01:33:18 -0800 | [diff] [blame] | 4766 | eop = tx_ring->buffer_info[i].next_to_watch; |
| 4767 | eop_desc = E1000_TX_DESC_ADV(*tx_ring, eop); |
| 4768 | } |
| 4769 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4770 | tx_ring->next_to_clean = i; |
| 4771 | |
Alexander Duyck | fc7d345 | 2008-08-26 04:25:08 -0700 | [diff] [blame] | 4772 | if (unlikely(count && |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4773 | netif_carrier_ok(netdev) && |
Alexander Duyck | c493ea4 | 2009-03-20 00:16:50 +0000 | [diff] [blame] | 4774 | igb_desc_unused(tx_ring) >= IGB_TX_QUEUE_WAKE)) { |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4775 | /* Make sure that anybody stopping the queue after this |
| 4776 | * sees the new next_to_clean. |
| 4777 | */ |
| 4778 | smp_mb(); |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 4779 | if (__netif_subqueue_stopped(netdev, tx_ring->queue_index) && |
| 4780 | !(test_bit(__IGB_DOWN, &adapter->state))) { |
| 4781 | netif_wake_subqueue(netdev, tx_ring->queue_index); |
Alexander Duyck | 04a5fcaa | 2009-10-27 15:52:27 +0000 | [diff] [blame] | 4782 | tx_ring->tx_stats.restart_queue++; |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 4783 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4784 | } |
| 4785 | |
| 4786 | if (tx_ring->detect_tx_hung) { |
| 4787 | /* Detect a transmit hang in hardware, this serializes the |
| 4788 | * check with the clearing of time_stamp and movement of i */ |
| 4789 | tx_ring->detect_tx_hung = false; |
| 4790 | if (tx_ring->buffer_info[i].time_stamp && |
| 4791 | time_after(jiffies, tx_ring->buffer_info[i].time_stamp + |
| 4792 | (adapter->tx_timeout_factor * HZ)) |
| 4793 | && !(rd32(E1000_STATUS) & |
| 4794 | E1000_STATUS_TXOFF)) { |
| 4795 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4796 | /* detected Tx unit hang */ |
Alexander Duyck | 8078529 | 2009-10-27 15:51:47 +0000 | [diff] [blame] | 4797 | dev_err(&tx_ring->pdev->dev, |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4798 | "Detected Tx Unit Hang\n" |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 4799 | " Tx Queue <%d>\n" |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4800 | " TDH <%x>\n" |
| 4801 | " TDT <%x>\n" |
| 4802 | " next_to_use <%x>\n" |
| 4803 | " next_to_clean <%x>\n" |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4804 | "buffer_info[next_to_clean]\n" |
| 4805 | " time_stamp <%lx>\n" |
Alexander Duyck | 0e014cb | 2008-12-26 01:33:18 -0800 | [diff] [blame] | 4806 | " next_to_watch <%x>\n" |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4807 | " jiffies <%lx>\n" |
| 4808 | " desc.status <%x>\n", |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 4809 | tx_ring->queue_index, |
Alexander Duyck | fce99e3 | 2009-10-27 15:51:27 +0000 | [diff] [blame] | 4810 | readl(tx_ring->head), |
| 4811 | readl(tx_ring->tail), |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4812 | tx_ring->next_to_use, |
| 4813 | tx_ring->next_to_clean, |
Alexander Duyck | f7ba205 | 2009-10-27 23:48:51 +0000 | [diff] [blame] | 4814 | tx_ring->buffer_info[eop].time_stamp, |
Alexander Duyck | 0e014cb | 2008-12-26 01:33:18 -0800 | [diff] [blame] | 4815 | eop, |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4816 | jiffies, |
Alexander Duyck | 0e014cb | 2008-12-26 01:33:18 -0800 | [diff] [blame] | 4817 | eop_desc->wb.status); |
Peter P Waskiewicz Jr | 661086d | 2008-07-08 15:06:51 -0700 | [diff] [blame] | 4818 | netif_stop_subqueue(netdev, tx_ring->queue_index); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4819 | } |
| 4820 | } |
| 4821 | tx_ring->total_bytes += total_bytes; |
| 4822 | tx_ring->total_packets += total_packets; |
Alexander Duyck | e21ed35 | 2008-07-08 15:07:24 -0700 | [diff] [blame] | 4823 | tx_ring->tx_stats.bytes += total_bytes; |
| 4824 | tx_ring->tx_stats.packets += total_packets; |
Alexander Duyck | 0e014cb | 2008-12-26 01:33:18 -0800 | [diff] [blame] | 4825 | return (count < tx_ring->count); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4826 | } |
| 4827 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4828 | /** |
| 4829 | * igb_receive_skb - helper function to handle rx indications |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 4830 | * @q_vector: structure containing interrupt and ring information |
| 4831 | * @skb: packet to send up |
| 4832 | * @vlan_tag: vlan tag for packet |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4833 | **/ |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 4834 | static void igb_receive_skb(struct igb_q_vector *q_vector, |
| 4835 | struct sk_buff *skb, |
| 4836 | u16 vlan_tag) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4837 | { |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 4838 | struct igb_adapter *adapter = q_vector->adapter; |
Alexander Duyck | d335252 | 2008-07-08 15:12:13 -0700 | [diff] [blame] | 4839 | |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 4840 | if (vlan_tag) |
| 4841 | vlan_gro_receive(&q_vector->napi, adapter->vlgrp, |
| 4842 | vlan_tag, skb); |
Alexander Duyck | 182ff8d | 2009-04-27 22:35:33 +0000 | [diff] [blame] | 4843 | else |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 4844 | napi_gro_receive(&q_vector->napi, skb); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4845 | } |
| 4846 | |
Alexander Duyck | 04a5fcaa | 2009-10-27 15:52:27 +0000 | [diff] [blame] | 4847 | static inline void igb_rx_checksum_adv(struct igb_ring *ring, |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4848 | u32 status_err, struct sk_buff *skb) |
| 4849 | { |
| 4850 | skb->ip_summed = CHECKSUM_NONE; |
| 4851 | |
| 4852 | /* Ignore Checksum bit is set or checksum is disabled through ethtool */ |
Alexander Duyck | 85ad76b | 2009-10-27 15:52:46 +0000 | [diff] [blame] | 4853 | if (!(ring->flags & IGB_RING_FLAG_RX_CSUM) || |
| 4854 | (status_err & E1000_RXD_STAT_IXSM)) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4855 | return; |
Alexander Duyck | 85ad76b | 2009-10-27 15:52:46 +0000 | [diff] [blame] | 4856 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4857 | /* TCP/UDP checksum error bit is set */ |
| 4858 | if (status_err & |
| 4859 | (E1000_RXDEXT_STATERR_TCPE | E1000_RXDEXT_STATERR_IPE)) { |
Jesse Brandeburg | b947356 | 2009-04-27 22:36:13 +0000 | [diff] [blame] | 4860 | /* |
| 4861 | * work around errata with sctp packets where the TCPE aka |
| 4862 | * L4E bit is set incorrectly on 64 byte (60 byte w/o crc) |
| 4863 | * packets, (aka let the stack check the crc32c) |
| 4864 | */ |
Alexander Duyck | 85ad76b | 2009-10-27 15:52:46 +0000 | [diff] [blame] | 4865 | if ((skb->len == 60) && |
| 4866 | (ring->flags & IGB_RING_FLAG_RX_SCTP_CSUM)) |
Alexander Duyck | 04a5fcaa | 2009-10-27 15:52:27 +0000 | [diff] [blame] | 4867 | ring->rx_stats.csum_err++; |
Alexander Duyck | 85ad76b | 2009-10-27 15:52:46 +0000 | [diff] [blame] | 4868 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4869 | /* let the stack verify checksum errors */ |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4870 | return; |
| 4871 | } |
| 4872 | /* It must be a TCP or UDP packet with a valid checksum */ |
| 4873 | if (status_err & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS)) |
| 4874 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
| 4875 | |
Alexander Duyck | 85ad76b | 2009-10-27 15:52:46 +0000 | [diff] [blame] | 4876 | dev_dbg(&ring->pdev->dev, "cksum success: bits %08X\n", status_err); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4877 | } |
| 4878 | |
Alexander Duyck | c5b9bd5 | 2009-10-27 23:46:01 +0000 | [diff] [blame] | 4879 | static inline void igb_rx_hwtstamp(struct igb_q_vector *q_vector, u32 staterr, |
| 4880 | struct sk_buff *skb) |
| 4881 | { |
| 4882 | struct igb_adapter *adapter = q_vector->adapter; |
| 4883 | struct e1000_hw *hw = &adapter->hw; |
| 4884 | u64 regval; |
| 4885 | |
| 4886 | /* |
| 4887 | * If this bit is set, then the RX registers contain the time stamp. No |
| 4888 | * other packet will be time stamped until we read these registers, so |
| 4889 | * read the registers to make them available again. Because only one |
| 4890 | * packet can be time stamped at a time, we know that the register |
| 4891 | * values must belong to this one here and therefore we don't need to |
| 4892 | * compare any of the additional attributes stored for it. |
| 4893 | * |
| 4894 | * If nothing went wrong, then it should have a skb_shared_tx that we |
| 4895 | * can turn into a skb_shared_hwtstamps. |
| 4896 | */ |
| 4897 | if (likely(!(staterr & E1000_RXDADV_STAT_TS))) |
| 4898 | return; |
| 4899 | if (!(rd32(E1000_TSYNCRXCTL) & E1000_TSYNCRXCTL_VALID)) |
| 4900 | return; |
| 4901 | |
| 4902 | regval = rd32(E1000_RXSTMPL); |
| 4903 | regval |= (u64)rd32(E1000_RXSTMPH) << 32; |
| 4904 | |
| 4905 | igb_systim_to_hwtstamp(adapter, skb_hwtstamps(skb), regval); |
| 4906 | } |
Alexander Duyck | 4c84485 | 2009-10-27 15:52:07 +0000 | [diff] [blame] | 4907 | static inline u16 igb_get_hlen(struct igb_ring *rx_ring, |
Alexander Duyck | 2d94d8a | 2009-07-23 18:10:06 +0000 | [diff] [blame] | 4908 | union e1000_adv_rx_desc *rx_desc) |
| 4909 | { |
| 4910 | /* HW will not DMA in data larger than the given buffer, even if it |
| 4911 | * parses the (NFS, of course) header to be larger. In that case, it |
| 4912 | * fills the header buffer and spills the rest into the page. |
| 4913 | */ |
| 4914 | u16 hlen = (le16_to_cpu(rx_desc->wb.lower.lo_dword.hdr_info) & |
| 4915 | E1000_RXDADV_HDRBUFLEN_MASK) >> E1000_RXDADV_HDRBUFLEN_SHIFT; |
Alexander Duyck | 4c84485 | 2009-10-27 15:52:07 +0000 | [diff] [blame] | 4916 | if (hlen > rx_ring->rx_buffer_len) |
| 4917 | hlen = rx_ring->rx_buffer_len; |
Alexander Duyck | 2d94d8a | 2009-07-23 18:10:06 +0000 | [diff] [blame] | 4918 | return hlen; |
| 4919 | } |
| 4920 | |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 4921 | static bool igb_clean_rx_irq_adv(struct igb_q_vector *q_vector, |
| 4922 | int *work_done, int budget) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4923 | { |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 4924 | struct igb_ring *rx_ring = q_vector->rx_ring; |
Alexander Duyck | e694e96 | 2009-10-27 15:53:06 +0000 | [diff] [blame] | 4925 | struct net_device *netdev = rx_ring->netdev; |
Alexander Duyck | 8078529 | 2009-10-27 15:51:47 +0000 | [diff] [blame] | 4926 | struct pci_dev *pdev = rx_ring->pdev; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4927 | union e1000_adv_rx_desc *rx_desc , *next_rxd; |
| 4928 | struct igb_buffer *buffer_info , *next_buffer; |
| 4929 | struct sk_buff *skb; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4930 | bool cleaned = false; |
| 4931 | int cleaned_count = 0; |
| 4932 | unsigned int total_bytes = 0, total_packets = 0; |
Alexander Duyck | 73cd78f | 2009-02-12 18:16:59 +0000 | [diff] [blame] | 4933 | unsigned int i; |
Alexander Duyck | 2d94d8a | 2009-07-23 18:10:06 +0000 | [diff] [blame] | 4934 | u32 staterr; |
| 4935 | u16 length; |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 4936 | u16 vlan_tag; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4937 | |
| 4938 | i = rx_ring->next_to_clean; |
Alexander Duyck | 69d3ca5 | 2009-02-06 23:15:04 +0000 | [diff] [blame] | 4939 | buffer_info = &rx_ring->buffer_info[i]; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4940 | rx_desc = E1000_RX_DESC_ADV(*rx_ring, i); |
| 4941 | staterr = le32_to_cpu(rx_desc->wb.upper.status_error); |
| 4942 | |
| 4943 | while (staterr & E1000_RXD_STAT_DD) { |
| 4944 | if (*work_done >= budget) |
| 4945 | break; |
| 4946 | (*work_done)++; |
Alexander Duyck | 69d3ca5 | 2009-02-06 23:15:04 +0000 | [diff] [blame] | 4947 | |
| 4948 | skb = buffer_info->skb; |
| 4949 | prefetch(skb->data - NET_IP_ALIGN); |
| 4950 | buffer_info->skb = NULL; |
| 4951 | |
| 4952 | i++; |
| 4953 | if (i == rx_ring->count) |
| 4954 | i = 0; |
| 4955 | next_rxd = E1000_RX_DESC_ADV(*rx_ring, i); |
| 4956 | prefetch(next_rxd); |
| 4957 | next_buffer = &rx_ring->buffer_info[i]; |
| 4958 | |
| 4959 | length = le16_to_cpu(rx_desc->wb.upper.length); |
| 4960 | cleaned = true; |
| 4961 | cleaned_count++; |
| 4962 | |
Alexander Duyck | 6ec43fe | 2009-10-27 15:50:48 +0000 | [diff] [blame] | 4963 | if (buffer_info->dma) { |
Alexander Duyck | 69d3ca5 | 2009-02-06 23:15:04 +0000 | [diff] [blame] | 4964 | pci_unmap_single(pdev, buffer_info->dma, |
Alexander Duyck | 4c84485 | 2009-10-27 15:52:07 +0000 | [diff] [blame] | 4965 | rx_ring->rx_buffer_len, |
Alexander Duyck | 69d3ca5 | 2009-02-06 23:15:04 +0000 | [diff] [blame] | 4966 | PCI_DMA_FROMDEVICE); |
Jesse Brandeburg | 91615f7 | 2009-06-30 12:45:15 +0000 | [diff] [blame] | 4967 | buffer_info->dma = 0; |
Alexander Duyck | 4c84485 | 2009-10-27 15:52:07 +0000 | [diff] [blame] | 4968 | if (rx_ring->rx_buffer_len >= IGB_RXBUFFER_1024) { |
Alexander Duyck | 6ec43fe | 2009-10-27 15:50:48 +0000 | [diff] [blame] | 4969 | skb_put(skb, length); |
| 4970 | goto send_up; |
| 4971 | } |
Alexander Duyck | 4c84485 | 2009-10-27 15:52:07 +0000 | [diff] [blame] | 4972 | skb_put(skb, igb_get_hlen(rx_ring, rx_desc)); |
Alexander Duyck | bf36c1a | 2008-07-08 15:11:40 -0700 | [diff] [blame] | 4973 | } |
| 4974 | |
| 4975 | if (length) { |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4976 | pci_unmap_page(pdev, buffer_info->page_dma, |
Alexander Duyck | bf36c1a | 2008-07-08 15:11:40 -0700 | [diff] [blame] | 4977 | PAGE_SIZE / 2, PCI_DMA_FROMDEVICE); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4978 | buffer_info->page_dma = 0; |
Alexander Duyck | bf36c1a | 2008-07-08 15:11:40 -0700 | [diff] [blame] | 4979 | |
| 4980 | skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags++, |
| 4981 | buffer_info->page, |
| 4982 | buffer_info->page_offset, |
| 4983 | length); |
| 4984 | |
Alexander Duyck | 6ec43fe | 2009-10-27 15:50:48 +0000 | [diff] [blame] | 4985 | if (page_count(buffer_info->page) != 1) |
Alexander Duyck | bf36c1a | 2008-07-08 15:11:40 -0700 | [diff] [blame] | 4986 | buffer_info->page = NULL; |
| 4987 | else |
| 4988 | get_page(buffer_info->page); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4989 | |
| 4990 | skb->len += length; |
| 4991 | skb->data_len += length; |
Alexander Duyck | bf36c1a | 2008-07-08 15:11:40 -0700 | [diff] [blame] | 4992 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4993 | skb->truesize += length; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4994 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 4995 | |
Alexander Duyck | bf36c1a | 2008-07-08 15:11:40 -0700 | [diff] [blame] | 4996 | if (!(staterr & E1000_RXD_STAT_EOP)) { |
Alexander Duyck | b2d5653 | 2008-11-20 00:47:34 -0800 | [diff] [blame] | 4997 | buffer_info->skb = next_buffer->skb; |
| 4998 | buffer_info->dma = next_buffer->dma; |
| 4999 | next_buffer->skb = skb; |
| 5000 | next_buffer->dma = 0; |
Alexander Duyck | bf36c1a | 2008-07-08 15:11:40 -0700 | [diff] [blame] | 5001 | goto next_desc; |
| 5002 | } |
Alexander Duyck | 69d3ca5 | 2009-02-06 23:15:04 +0000 | [diff] [blame] | 5003 | send_up: |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5004 | if (staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) { |
| 5005 | dev_kfree_skb_irq(skb); |
| 5006 | goto next_desc; |
| 5007 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5008 | |
Alexander Duyck | c5b9bd5 | 2009-10-27 23:46:01 +0000 | [diff] [blame] | 5009 | igb_rx_hwtstamp(q_vector, staterr, skb); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5010 | total_bytes += skb->len; |
| 5011 | total_packets++; |
| 5012 | |
Alexander Duyck | 85ad76b | 2009-10-27 15:52:46 +0000 | [diff] [blame] | 5013 | igb_rx_checksum_adv(rx_ring, staterr, skb); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5014 | |
| 5015 | skb->protocol = eth_type_trans(skb, netdev); |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 5016 | skb_record_rx_queue(skb, rx_ring->queue_index); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5017 | |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 5018 | vlan_tag = ((staterr & E1000_RXD_STAT_VP) ? |
| 5019 | le16_to_cpu(rx_desc->wb.upper.vlan) : 0); |
| 5020 | |
| 5021 | igb_receive_skb(q_vector, skb, vlan_tag); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5022 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5023 | next_desc: |
| 5024 | rx_desc->wb.upper.status_error = 0; |
| 5025 | |
| 5026 | /* return some buffers to hardware, one at a time is too slow */ |
| 5027 | if (cleaned_count >= IGB_RX_BUFFER_WRITE) { |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 5028 | igb_alloc_rx_buffers_adv(rx_ring, cleaned_count); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5029 | cleaned_count = 0; |
| 5030 | } |
| 5031 | |
| 5032 | /* use prefetched values */ |
| 5033 | rx_desc = next_rxd; |
| 5034 | buffer_info = next_buffer; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5035 | staterr = le32_to_cpu(rx_desc->wb.upper.status_error); |
| 5036 | } |
Alexander Duyck | bf36c1a | 2008-07-08 15:11:40 -0700 | [diff] [blame] | 5037 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5038 | rx_ring->next_to_clean = i; |
Alexander Duyck | c493ea4 | 2009-03-20 00:16:50 +0000 | [diff] [blame] | 5039 | cleaned_count = igb_desc_unused(rx_ring); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5040 | |
| 5041 | if (cleaned_count) |
Mitch Williams | 3b644cf | 2008-06-27 10:59:48 -0700 | [diff] [blame] | 5042 | igb_alloc_rx_buffers_adv(rx_ring, cleaned_count); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5043 | |
| 5044 | rx_ring->total_packets += total_packets; |
| 5045 | rx_ring->total_bytes += total_bytes; |
| 5046 | rx_ring->rx_stats.packets += total_packets; |
| 5047 | rx_ring->rx_stats.bytes += total_bytes; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5048 | return cleaned; |
| 5049 | } |
| 5050 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5051 | /** |
| 5052 | * igb_alloc_rx_buffers_adv - Replace used receive buffers; packet split |
| 5053 | * @adapter: address of board private structure |
| 5054 | **/ |
Alexander Duyck | d7ee5b3 | 2009-10-27 15:54:23 +0000 | [diff] [blame] | 5055 | void igb_alloc_rx_buffers_adv(struct igb_ring *rx_ring, int cleaned_count) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5056 | { |
Alexander Duyck | e694e96 | 2009-10-27 15:53:06 +0000 | [diff] [blame] | 5057 | struct net_device *netdev = rx_ring->netdev; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5058 | union e1000_adv_rx_desc *rx_desc; |
| 5059 | struct igb_buffer *buffer_info; |
| 5060 | struct sk_buff *skb; |
| 5061 | unsigned int i; |
Alexander Duyck | db76176 | 2009-02-06 23:15:25 +0000 | [diff] [blame] | 5062 | int bufsz; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5063 | |
| 5064 | i = rx_ring->next_to_use; |
| 5065 | buffer_info = &rx_ring->buffer_info[i]; |
| 5066 | |
Alexander Duyck | 4c84485 | 2009-10-27 15:52:07 +0000 | [diff] [blame] | 5067 | bufsz = rx_ring->rx_buffer_len; |
Alexander Duyck | db76176 | 2009-02-06 23:15:25 +0000 | [diff] [blame] | 5068 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5069 | while (cleaned_count--) { |
| 5070 | rx_desc = E1000_RX_DESC_ADV(*rx_ring, i); |
| 5071 | |
Alexander Duyck | 6ec43fe | 2009-10-27 15:50:48 +0000 | [diff] [blame] | 5072 | if ((bufsz < IGB_RXBUFFER_1024) && !buffer_info->page_dma) { |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5073 | if (!buffer_info->page) { |
Alexander Duyck | bf36c1a | 2008-07-08 15:11:40 -0700 | [diff] [blame] | 5074 | buffer_info->page = alloc_page(GFP_ATOMIC); |
| 5075 | if (!buffer_info->page) { |
Alexander Duyck | 04a5fcaa | 2009-10-27 15:52:27 +0000 | [diff] [blame] | 5076 | rx_ring->rx_stats.alloc_failed++; |
Alexander Duyck | bf36c1a | 2008-07-08 15:11:40 -0700 | [diff] [blame] | 5077 | goto no_buffers; |
| 5078 | } |
| 5079 | buffer_info->page_offset = 0; |
| 5080 | } else { |
| 5081 | buffer_info->page_offset ^= PAGE_SIZE / 2; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5082 | } |
| 5083 | buffer_info->page_dma = |
Alexander Duyck | 8078529 | 2009-10-27 15:51:47 +0000 | [diff] [blame] | 5084 | pci_map_page(rx_ring->pdev, buffer_info->page, |
Alexander Duyck | bf36c1a | 2008-07-08 15:11:40 -0700 | [diff] [blame] | 5085 | buffer_info->page_offset, |
| 5086 | PAGE_SIZE / 2, |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5087 | PCI_DMA_FROMDEVICE); |
| 5088 | } |
| 5089 | |
| 5090 | if (!buffer_info->skb) { |
Eric Dumazet | 89d71a6 | 2009-10-13 05:34:20 +0000 | [diff] [blame] | 5091 | skb = netdev_alloc_skb_ip_align(netdev, bufsz); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5092 | if (!skb) { |
Alexander Duyck | 04a5fcaa | 2009-10-27 15:52:27 +0000 | [diff] [blame] | 5093 | rx_ring->rx_stats.alloc_failed++; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5094 | goto no_buffers; |
| 5095 | } |
| 5096 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5097 | buffer_info->skb = skb; |
Alexander Duyck | 8078529 | 2009-10-27 15:51:47 +0000 | [diff] [blame] | 5098 | buffer_info->dma = pci_map_single(rx_ring->pdev, |
| 5099 | skb->data, |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5100 | bufsz, |
| 5101 | PCI_DMA_FROMDEVICE); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5102 | } |
| 5103 | /* Refresh the desc even if buffer_addrs didn't change because |
| 5104 | * each write-back erases this info. */ |
Alexander Duyck | 6ec43fe | 2009-10-27 15:50:48 +0000 | [diff] [blame] | 5105 | if (bufsz < IGB_RXBUFFER_1024) { |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5106 | rx_desc->read.pkt_addr = |
| 5107 | cpu_to_le64(buffer_info->page_dma); |
| 5108 | rx_desc->read.hdr_addr = cpu_to_le64(buffer_info->dma); |
| 5109 | } else { |
| 5110 | rx_desc->read.pkt_addr = |
| 5111 | cpu_to_le64(buffer_info->dma); |
| 5112 | rx_desc->read.hdr_addr = 0; |
| 5113 | } |
| 5114 | |
| 5115 | i++; |
| 5116 | if (i == rx_ring->count) |
| 5117 | i = 0; |
| 5118 | buffer_info = &rx_ring->buffer_info[i]; |
| 5119 | } |
| 5120 | |
| 5121 | no_buffers: |
| 5122 | if (rx_ring->next_to_use != i) { |
| 5123 | rx_ring->next_to_use = i; |
| 5124 | if (i == 0) |
| 5125 | i = (rx_ring->count - 1); |
| 5126 | else |
| 5127 | i--; |
| 5128 | |
| 5129 | /* Force memory writes to complete before letting h/w |
| 5130 | * know there are new descriptors to fetch. (Only |
| 5131 | * applicable for weak-ordered memory model archs, |
| 5132 | * such as IA-64). */ |
| 5133 | wmb(); |
Alexander Duyck | fce99e3 | 2009-10-27 15:51:27 +0000 | [diff] [blame] | 5134 | writel(i, rx_ring->tail); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5135 | } |
| 5136 | } |
| 5137 | |
| 5138 | /** |
| 5139 | * igb_mii_ioctl - |
| 5140 | * @netdev: |
| 5141 | * @ifreq: |
| 5142 | * @cmd: |
| 5143 | **/ |
| 5144 | static int igb_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) |
| 5145 | { |
| 5146 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 5147 | struct mii_ioctl_data *data = if_mii(ifr); |
| 5148 | |
| 5149 | if (adapter->hw.phy.media_type != e1000_media_type_copper) |
| 5150 | return -EOPNOTSUPP; |
| 5151 | |
| 5152 | switch (cmd) { |
| 5153 | case SIOCGMIIPHY: |
| 5154 | data->phy_id = adapter->hw.phy.addr; |
| 5155 | break; |
| 5156 | case SIOCGMIIREG: |
Alexander Duyck | f5f4cf0 | 2008-11-21 21:30:24 -0800 | [diff] [blame] | 5157 | if (igb_read_phy_reg(&adapter->hw, data->reg_num & 0x1F, |
| 5158 | &data->val_out)) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5159 | return -EIO; |
| 5160 | break; |
| 5161 | case SIOCSMIIREG: |
| 5162 | default: |
| 5163 | return -EOPNOTSUPP; |
| 5164 | } |
| 5165 | return 0; |
| 5166 | } |
| 5167 | |
| 5168 | /** |
Patrick Ohly | c6cb090 | 2009-02-12 05:03:42 +0000 | [diff] [blame] | 5169 | * igb_hwtstamp_ioctl - control hardware time stamping |
| 5170 | * @netdev: |
| 5171 | * @ifreq: |
| 5172 | * @cmd: |
| 5173 | * |
Patrick Ohly | 33af6bc | 2009-02-12 05:03:43 +0000 | [diff] [blame] | 5174 | * Outgoing time stamping can be enabled and disabled. Play nice and |
| 5175 | * disable it when requested, although it shouldn't case any overhead |
| 5176 | * when no packet needs it. At most one packet in the queue may be |
| 5177 | * marked for time stamping, otherwise it would be impossible to tell |
| 5178 | * for sure to which packet the hardware time stamp belongs. |
| 5179 | * |
| 5180 | * Incoming time stamping has to be configured via the hardware |
| 5181 | * filters. Not all combinations are supported, in particular event |
| 5182 | * type has to be specified. Matching the kind of event packet is |
| 5183 | * not supported, with the exception of "all V2 events regardless of |
| 5184 | * level 2 or 4". |
| 5185 | * |
Patrick Ohly | c6cb090 | 2009-02-12 05:03:42 +0000 | [diff] [blame] | 5186 | **/ |
| 5187 | static int igb_hwtstamp_ioctl(struct net_device *netdev, |
| 5188 | struct ifreq *ifr, int cmd) |
| 5189 | { |
Patrick Ohly | 33af6bc | 2009-02-12 05:03:43 +0000 | [diff] [blame] | 5190 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 5191 | struct e1000_hw *hw = &adapter->hw; |
Patrick Ohly | c6cb090 | 2009-02-12 05:03:42 +0000 | [diff] [blame] | 5192 | struct hwtstamp_config config; |
Alexander Duyck | c5b9bd5 | 2009-10-27 23:46:01 +0000 | [diff] [blame] | 5193 | u32 tsync_tx_ctl = E1000_TSYNCTXCTL_ENABLED; |
| 5194 | u32 tsync_rx_ctl = E1000_TSYNCRXCTL_ENABLED; |
Patrick Ohly | 33af6bc | 2009-02-12 05:03:43 +0000 | [diff] [blame] | 5195 | u32 tsync_rx_cfg = 0; |
Alexander Duyck | c5b9bd5 | 2009-10-27 23:46:01 +0000 | [diff] [blame] | 5196 | bool is_l4 = false; |
| 5197 | bool is_l2 = false; |
Patrick Ohly | 33af6bc | 2009-02-12 05:03:43 +0000 | [diff] [blame] | 5198 | u32 regval; |
Patrick Ohly | c6cb090 | 2009-02-12 05:03:42 +0000 | [diff] [blame] | 5199 | |
| 5200 | if (copy_from_user(&config, ifr->ifr_data, sizeof(config))) |
| 5201 | return -EFAULT; |
| 5202 | |
| 5203 | /* reserved for future extensions */ |
| 5204 | if (config.flags) |
| 5205 | return -EINVAL; |
| 5206 | |
Patrick Ohly | 33af6bc | 2009-02-12 05:03:43 +0000 | [diff] [blame] | 5207 | switch (config.tx_type) { |
| 5208 | case HWTSTAMP_TX_OFF: |
Alexander Duyck | c5b9bd5 | 2009-10-27 23:46:01 +0000 | [diff] [blame] | 5209 | tsync_tx_ctl = 0; |
Patrick Ohly | 33af6bc | 2009-02-12 05:03:43 +0000 | [diff] [blame] | 5210 | case HWTSTAMP_TX_ON: |
Patrick Ohly | 33af6bc | 2009-02-12 05:03:43 +0000 | [diff] [blame] | 5211 | break; |
| 5212 | default: |
| 5213 | return -ERANGE; |
| 5214 | } |
Patrick Ohly | c6cb090 | 2009-02-12 05:03:42 +0000 | [diff] [blame] | 5215 | |
Patrick Ohly | 33af6bc | 2009-02-12 05:03:43 +0000 | [diff] [blame] | 5216 | switch (config.rx_filter) { |
| 5217 | case HWTSTAMP_FILTER_NONE: |
Alexander Duyck | c5b9bd5 | 2009-10-27 23:46:01 +0000 | [diff] [blame] | 5218 | tsync_rx_ctl = 0; |
Patrick Ohly | 33af6bc | 2009-02-12 05:03:43 +0000 | [diff] [blame] | 5219 | break; |
| 5220 | case HWTSTAMP_FILTER_PTP_V1_L4_EVENT: |
| 5221 | case HWTSTAMP_FILTER_PTP_V2_L4_EVENT: |
| 5222 | case HWTSTAMP_FILTER_PTP_V2_L2_EVENT: |
| 5223 | case HWTSTAMP_FILTER_ALL: |
| 5224 | /* |
| 5225 | * register TSYNCRXCFG must be set, therefore it is not |
| 5226 | * possible to time stamp both Sync and Delay_Req messages |
| 5227 | * => fall back to time stamping all packets |
| 5228 | */ |
Alexander Duyck | c5b9bd5 | 2009-10-27 23:46:01 +0000 | [diff] [blame] | 5229 | tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_ALL; |
Patrick Ohly | 33af6bc | 2009-02-12 05:03:43 +0000 | [diff] [blame] | 5230 | config.rx_filter = HWTSTAMP_FILTER_ALL; |
| 5231 | break; |
| 5232 | case HWTSTAMP_FILTER_PTP_V1_L4_SYNC: |
Alexander Duyck | c5b9bd5 | 2009-10-27 23:46:01 +0000 | [diff] [blame] | 5233 | tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_L4_V1; |
Patrick Ohly | 33af6bc | 2009-02-12 05:03:43 +0000 | [diff] [blame] | 5234 | tsync_rx_cfg = E1000_TSYNCRXCFG_PTP_V1_SYNC_MESSAGE; |
Alexander Duyck | c5b9bd5 | 2009-10-27 23:46:01 +0000 | [diff] [blame] | 5235 | is_l4 = true; |
Patrick Ohly | 33af6bc | 2009-02-12 05:03:43 +0000 | [diff] [blame] | 5236 | break; |
| 5237 | case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ: |
Alexander Duyck | c5b9bd5 | 2009-10-27 23:46:01 +0000 | [diff] [blame] | 5238 | tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_L4_V1; |
Patrick Ohly | 33af6bc | 2009-02-12 05:03:43 +0000 | [diff] [blame] | 5239 | tsync_rx_cfg = E1000_TSYNCRXCFG_PTP_V1_DELAY_REQ_MESSAGE; |
Alexander Duyck | c5b9bd5 | 2009-10-27 23:46:01 +0000 | [diff] [blame] | 5240 | is_l4 = true; |
Patrick Ohly | 33af6bc | 2009-02-12 05:03:43 +0000 | [diff] [blame] | 5241 | break; |
| 5242 | case HWTSTAMP_FILTER_PTP_V2_L2_SYNC: |
| 5243 | case HWTSTAMP_FILTER_PTP_V2_L4_SYNC: |
Alexander Duyck | c5b9bd5 | 2009-10-27 23:46:01 +0000 | [diff] [blame] | 5244 | tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_L2_L4_V2; |
Patrick Ohly | 33af6bc | 2009-02-12 05:03:43 +0000 | [diff] [blame] | 5245 | tsync_rx_cfg = E1000_TSYNCRXCFG_PTP_V2_SYNC_MESSAGE; |
Alexander Duyck | c5b9bd5 | 2009-10-27 23:46:01 +0000 | [diff] [blame] | 5246 | is_l2 = true; |
| 5247 | is_l4 = true; |
Patrick Ohly | 33af6bc | 2009-02-12 05:03:43 +0000 | [diff] [blame] | 5248 | config.rx_filter = HWTSTAMP_FILTER_SOME; |
| 5249 | break; |
| 5250 | case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ: |
| 5251 | case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ: |
Alexander Duyck | c5b9bd5 | 2009-10-27 23:46:01 +0000 | [diff] [blame] | 5252 | tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_L2_L4_V2; |
Patrick Ohly | 33af6bc | 2009-02-12 05:03:43 +0000 | [diff] [blame] | 5253 | tsync_rx_cfg = E1000_TSYNCRXCFG_PTP_V2_DELAY_REQ_MESSAGE; |
Alexander Duyck | c5b9bd5 | 2009-10-27 23:46:01 +0000 | [diff] [blame] | 5254 | is_l2 = true; |
| 5255 | is_l4 = true; |
Patrick Ohly | 33af6bc | 2009-02-12 05:03:43 +0000 | [diff] [blame] | 5256 | config.rx_filter = HWTSTAMP_FILTER_SOME; |
| 5257 | break; |
| 5258 | case HWTSTAMP_FILTER_PTP_V2_EVENT: |
| 5259 | case HWTSTAMP_FILTER_PTP_V2_SYNC: |
| 5260 | case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ: |
Alexander Duyck | c5b9bd5 | 2009-10-27 23:46:01 +0000 | [diff] [blame] | 5261 | tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_EVENT_V2; |
Patrick Ohly | 33af6bc | 2009-02-12 05:03:43 +0000 | [diff] [blame] | 5262 | config.rx_filter = HWTSTAMP_FILTER_PTP_V2_EVENT; |
Alexander Duyck | c5b9bd5 | 2009-10-27 23:46:01 +0000 | [diff] [blame] | 5263 | is_l2 = true; |
Patrick Ohly | 33af6bc | 2009-02-12 05:03:43 +0000 | [diff] [blame] | 5264 | break; |
| 5265 | default: |
| 5266 | return -ERANGE; |
| 5267 | } |
| 5268 | |
Alexander Duyck | c5b9bd5 | 2009-10-27 23:46:01 +0000 | [diff] [blame] | 5269 | if (hw->mac.type == e1000_82575) { |
| 5270 | if (tsync_rx_ctl | tsync_tx_ctl) |
| 5271 | return -EINVAL; |
| 5272 | return 0; |
| 5273 | } |
| 5274 | |
Patrick Ohly | 33af6bc | 2009-02-12 05:03:43 +0000 | [diff] [blame] | 5275 | /* enable/disable TX */ |
| 5276 | regval = rd32(E1000_TSYNCTXCTL); |
Alexander Duyck | c5b9bd5 | 2009-10-27 23:46:01 +0000 | [diff] [blame] | 5277 | regval &= ~E1000_TSYNCTXCTL_ENABLED; |
| 5278 | regval |= tsync_tx_ctl; |
Patrick Ohly | 33af6bc | 2009-02-12 05:03:43 +0000 | [diff] [blame] | 5279 | wr32(E1000_TSYNCTXCTL, regval); |
| 5280 | |
Alexander Duyck | c5b9bd5 | 2009-10-27 23:46:01 +0000 | [diff] [blame] | 5281 | /* enable/disable RX */ |
Patrick Ohly | 33af6bc | 2009-02-12 05:03:43 +0000 | [diff] [blame] | 5282 | regval = rd32(E1000_TSYNCRXCTL); |
Alexander Duyck | c5b9bd5 | 2009-10-27 23:46:01 +0000 | [diff] [blame] | 5283 | regval &= ~(E1000_TSYNCRXCTL_ENABLED | E1000_TSYNCRXCTL_TYPE_MASK); |
| 5284 | regval |= tsync_rx_ctl; |
Patrick Ohly | 33af6bc | 2009-02-12 05:03:43 +0000 | [diff] [blame] | 5285 | wr32(E1000_TSYNCRXCTL, regval); |
Alexander Duyck | c5b9bd5 | 2009-10-27 23:46:01 +0000 | [diff] [blame] | 5286 | |
| 5287 | /* define which PTP packets are time stamped */ |
Patrick Ohly | 33af6bc | 2009-02-12 05:03:43 +0000 | [diff] [blame] | 5288 | wr32(E1000_TSYNCRXCFG, tsync_rx_cfg); |
| 5289 | |
Alexander Duyck | c5b9bd5 | 2009-10-27 23:46:01 +0000 | [diff] [blame] | 5290 | /* define ethertype filter for timestamped packets */ |
| 5291 | if (is_l2) |
| 5292 | wr32(E1000_ETQF(3), |
| 5293 | (E1000_ETQF_FILTER_ENABLE | /* enable filter */ |
| 5294 | E1000_ETQF_1588 | /* enable timestamping */ |
| 5295 | ETH_P_1588)); /* 1588 eth protocol type */ |
| 5296 | else |
| 5297 | wr32(E1000_ETQF(3), 0); |
Patrick Ohly | 33af6bc | 2009-02-12 05:03:43 +0000 | [diff] [blame] | 5298 | |
Alexander Duyck | c5b9bd5 | 2009-10-27 23:46:01 +0000 | [diff] [blame] | 5299 | #define PTP_PORT 319 |
| 5300 | /* L4 Queue Filter[3]: filter by destination port and protocol */ |
| 5301 | if (is_l4) { |
| 5302 | u32 ftqf = (IPPROTO_UDP /* UDP */ |
| 5303 | | E1000_FTQF_VF_BP /* VF not compared */ |
| 5304 | | E1000_FTQF_1588_TIME_STAMP /* Enable Timestamping */ |
| 5305 | | E1000_FTQF_MASK); /* mask all inputs */ |
| 5306 | ftqf &= ~E1000_FTQF_MASK_PROTO_BP; /* enable protocol check */ |
Patrick Ohly | 33af6bc | 2009-02-12 05:03:43 +0000 | [diff] [blame] | 5307 | |
Alexander Duyck | c5b9bd5 | 2009-10-27 23:46:01 +0000 | [diff] [blame] | 5308 | wr32(E1000_IMIR(3), htons(PTP_PORT)); |
| 5309 | wr32(E1000_IMIREXT(3), |
| 5310 | (E1000_IMIREXT_SIZE_BP | E1000_IMIREXT_CTRL_BP)); |
| 5311 | if (hw->mac.type == e1000_82576) { |
| 5312 | /* enable source port check */ |
| 5313 | wr32(E1000_SPQF(3), htons(PTP_PORT)); |
| 5314 | ftqf &= ~E1000_FTQF_MASK_SOURCE_PORT_BP; |
| 5315 | } |
| 5316 | wr32(E1000_FTQF(3), ftqf); |
| 5317 | } else { |
| 5318 | wr32(E1000_FTQF(3), E1000_FTQF_MASK); |
| 5319 | } |
Patrick Ohly | 33af6bc | 2009-02-12 05:03:43 +0000 | [diff] [blame] | 5320 | wrfl(); |
| 5321 | |
| 5322 | adapter->hwtstamp_config = config; |
| 5323 | |
| 5324 | /* clear TX/RX time stamp registers, just to be sure */ |
| 5325 | regval = rd32(E1000_TXSTMPH); |
| 5326 | regval = rd32(E1000_RXSTMPH); |
| 5327 | |
| 5328 | return copy_to_user(ifr->ifr_data, &config, sizeof(config)) ? |
| 5329 | -EFAULT : 0; |
Patrick Ohly | c6cb090 | 2009-02-12 05:03:42 +0000 | [diff] [blame] | 5330 | } |
| 5331 | |
| 5332 | /** |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5333 | * igb_ioctl - |
| 5334 | * @netdev: |
| 5335 | * @ifreq: |
| 5336 | * @cmd: |
| 5337 | **/ |
| 5338 | static int igb_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) |
| 5339 | { |
| 5340 | switch (cmd) { |
| 5341 | case SIOCGMIIPHY: |
| 5342 | case SIOCGMIIREG: |
| 5343 | case SIOCSMIIREG: |
| 5344 | return igb_mii_ioctl(netdev, ifr, cmd); |
Patrick Ohly | c6cb090 | 2009-02-12 05:03:42 +0000 | [diff] [blame] | 5345 | case SIOCSHWTSTAMP: |
| 5346 | return igb_hwtstamp_ioctl(netdev, ifr, cmd); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5347 | default: |
| 5348 | return -EOPNOTSUPP; |
| 5349 | } |
| 5350 | } |
| 5351 | |
Alexander Duyck | 009bc06 | 2009-07-23 18:08:35 +0000 | [diff] [blame] | 5352 | s32 igb_read_pcie_cap_reg(struct e1000_hw *hw, u32 reg, u16 *value) |
| 5353 | { |
| 5354 | struct igb_adapter *adapter = hw->back; |
| 5355 | u16 cap_offset; |
| 5356 | |
| 5357 | cap_offset = pci_find_capability(adapter->pdev, PCI_CAP_ID_EXP); |
| 5358 | if (!cap_offset) |
| 5359 | return -E1000_ERR_CONFIG; |
| 5360 | |
| 5361 | pci_read_config_word(adapter->pdev, cap_offset + reg, value); |
| 5362 | |
| 5363 | return 0; |
| 5364 | } |
| 5365 | |
| 5366 | s32 igb_write_pcie_cap_reg(struct e1000_hw *hw, u32 reg, u16 *value) |
| 5367 | { |
| 5368 | struct igb_adapter *adapter = hw->back; |
| 5369 | u16 cap_offset; |
| 5370 | |
| 5371 | cap_offset = pci_find_capability(adapter->pdev, PCI_CAP_ID_EXP); |
| 5372 | if (!cap_offset) |
| 5373 | return -E1000_ERR_CONFIG; |
| 5374 | |
| 5375 | pci_write_config_word(adapter->pdev, cap_offset + reg, *value); |
| 5376 | |
| 5377 | return 0; |
| 5378 | } |
| 5379 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5380 | static void igb_vlan_rx_register(struct net_device *netdev, |
| 5381 | struct vlan_group *grp) |
| 5382 | { |
| 5383 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 5384 | struct e1000_hw *hw = &adapter->hw; |
| 5385 | u32 ctrl, rctl; |
| 5386 | |
| 5387 | igb_irq_disable(adapter); |
| 5388 | adapter->vlgrp = grp; |
| 5389 | |
| 5390 | if (grp) { |
| 5391 | /* enable VLAN tag insert/strip */ |
| 5392 | ctrl = rd32(E1000_CTRL); |
| 5393 | ctrl |= E1000_CTRL_VME; |
| 5394 | wr32(E1000_CTRL, ctrl); |
| 5395 | |
Alexander Duyck | 5146623 | 2009-10-27 23:47:35 +0000 | [diff] [blame] | 5396 | /* Disable CFI check */ |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5397 | rctl = rd32(E1000_RCTL); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5398 | rctl &= ~E1000_RCTL_CFIEN; |
| 5399 | wr32(E1000_RCTL, rctl); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5400 | } else { |
| 5401 | /* disable VLAN tag insert/strip */ |
| 5402 | ctrl = rd32(E1000_CTRL); |
| 5403 | ctrl &= ~E1000_CTRL_VME; |
| 5404 | wr32(E1000_CTRL, ctrl); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5405 | } |
| 5406 | |
Alexander Duyck | e173952 | 2009-02-19 20:39:44 -0800 | [diff] [blame] | 5407 | igb_rlpml_set(adapter); |
| 5408 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5409 | if (!test_bit(__IGB_DOWN, &adapter->state)) |
| 5410 | igb_irq_enable(adapter); |
| 5411 | } |
| 5412 | |
| 5413 | static void igb_vlan_rx_add_vid(struct net_device *netdev, u16 vid) |
| 5414 | { |
| 5415 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 5416 | struct e1000_hw *hw = &adapter->hw; |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 5417 | int pf_id = adapter->vfs_allocated_count; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5418 | |
Alexander Duyck | 5146623 | 2009-10-27 23:47:35 +0000 | [diff] [blame] | 5419 | /* attempt to add filter to vlvf array */ |
| 5420 | igb_vlvf_set(adapter, vid, true, pf_id); |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 5421 | |
Alexander Duyck | 5146623 | 2009-10-27 23:47:35 +0000 | [diff] [blame] | 5422 | /* add the filter since PF can receive vlans w/o entry in vlvf */ |
| 5423 | igb_vfta_set(hw, vid, true); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5424 | } |
| 5425 | |
| 5426 | static void igb_vlan_rx_kill_vid(struct net_device *netdev, u16 vid) |
| 5427 | { |
| 5428 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 5429 | struct e1000_hw *hw = &adapter->hw; |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 5430 | int pf_id = adapter->vfs_allocated_count; |
Alexander Duyck | 5146623 | 2009-10-27 23:47:35 +0000 | [diff] [blame] | 5431 | s32 err; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5432 | |
| 5433 | igb_irq_disable(adapter); |
| 5434 | vlan_group_set_device(adapter->vlgrp, vid, NULL); |
| 5435 | |
| 5436 | if (!test_bit(__IGB_DOWN, &adapter->state)) |
| 5437 | igb_irq_enable(adapter); |
| 5438 | |
Alexander Duyck | 5146623 | 2009-10-27 23:47:35 +0000 | [diff] [blame] | 5439 | /* remove vlan from VLVF table array */ |
| 5440 | err = igb_vlvf_set(adapter, vid, false, pf_id); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5441 | |
Alexander Duyck | 5146623 | 2009-10-27 23:47:35 +0000 | [diff] [blame] | 5442 | /* if vid was not present in VLVF just remove it from table */ |
| 5443 | if (err) |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 5444 | igb_vfta_set(hw, vid, false); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5445 | } |
| 5446 | |
| 5447 | static void igb_restore_vlan(struct igb_adapter *adapter) |
| 5448 | { |
| 5449 | igb_vlan_rx_register(adapter->netdev, adapter->vlgrp); |
| 5450 | |
| 5451 | if (adapter->vlgrp) { |
| 5452 | u16 vid; |
| 5453 | for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) { |
| 5454 | if (!vlan_group_get_device(adapter->vlgrp, vid)) |
| 5455 | continue; |
| 5456 | igb_vlan_rx_add_vid(adapter->netdev, vid); |
| 5457 | } |
| 5458 | } |
| 5459 | } |
| 5460 | |
| 5461 | int igb_set_spd_dplx(struct igb_adapter *adapter, u16 spddplx) |
| 5462 | { |
| 5463 | struct e1000_mac_info *mac = &adapter->hw.mac; |
| 5464 | |
| 5465 | mac->autoneg = 0; |
| 5466 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5467 | switch (spddplx) { |
| 5468 | case SPEED_10 + DUPLEX_HALF: |
| 5469 | mac->forced_speed_duplex = ADVERTISE_10_HALF; |
| 5470 | break; |
| 5471 | case SPEED_10 + DUPLEX_FULL: |
| 5472 | mac->forced_speed_duplex = ADVERTISE_10_FULL; |
| 5473 | break; |
| 5474 | case SPEED_100 + DUPLEX_HALF: |
| 5475 | mac->forced_speed_duplex = ADVERTISE_100_HALF; |
| 5476 | break; |
| 5477 | case SPEED_100 + DUPLEX_FULL: |
| 5478 | mac->forced_speed_duplex = ADVERTISE_100_FULL; |
| 5479 | break; |
| 5480 | case SPEED_1000 + DUPLEX_FULL: |
| 5481 | mac->autoneg = 1; |
| 5482 | adapter->hw.phy.autoneg_advertised = ADVERTISE_1000_FULL; |
| 5483 | break; |
| 5484 | case SPEED_1000 + DUPLEX_HALF: /* not supported */ |
| 5485 | default: |
| 5486 | dev_err(&adapter->pdev->dev, |
| 5487 | "Unsupported Speed/Duplex configuration\n"); |
| 5488 | return -EINVAL; |
| 5489 | } |
| 5490 | return 0; |
| 5491 | } |
| 5492 | |
Rafael J. Wysocki | 3fe7c4c | 2009-03-31 21:23:50 +0000 | [diff] [blame] | 5493 | static int __igb_shutdown(struct pci_dev *pdev, bool *enable_wake) |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5494 | { |
| 5495 | struct net_device *netdev = pci_get_drvdata(pdev); |
| 5496 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 5497 | struct e1000_hw *hw = &adapter->hw; |
Alexander Duyck | 2d064c0 | 2008-07-08 15:10:12 -0700 | [diff] [blame] | 5498 | u32 ctrl, rctl, status; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5499 | u32 wufc = adapter->wol; |
| 5500 | #ifdef CONFIG_PM |
| 5501 | int retval = 0; |
| 5502 | #endif |
| 5503 | |
| 5504 | netif_device_detach(netdev); |
| 5505 | |
Alexander Duyck | a88f10e | 2008-07-08 15:13:38 -0700 | [diff] [blame] | 5506 | if (netif_running(netdev)) |
| 5507 | igb_close(netdev); |
| 5508 | |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 5509 | igb_clear_interrupt_scheme(adapter); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5510 | |
| 5511 | #ifdef CONFIG_PM |
| 5512 | retval = pci_save_state(pdev); |
| 5513 | if (retval) |
| 5514 | return retval; |
| 5515 | #endif |
| 5516 | |
| 5517 | status = rd32(E1000_STATUS); |
| 5518 | if (status & E1000_STATUS_LU) |
| 5519 | wufc &= ~E1000_WUFC_LNKC; |
| 5520 | |
| 5521 | if (wufc) { |
| 5522 | igb_setup_rctl(adapter); |
Alexander Duyck | ff41f8d | 2009-09-03 14:48:56 +0000 | [diff] [blame] | 5523 | igb_set_rx_mode(netdev); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5524 | |
| 5525 | /* turn on all-multi mode if wake on multicast is enabled */ |
| 5526 | if (wufc & E1000_WUFC_MC) { |
| 5527 | rctl = rd32(E1000_RCTL); |
| 5528 | rctl |= E1000_RCTL_MPE; |
| 5529 | wr32(E1000_RCTL, rctl); |
| 5530 | } |
| 5531 | |
| 5532 | ctrl = rd32(E1000_CTRL); |
| 5533 | /* advertise wake from D3Cold */ |
| 5534 | #define E1000_CTRL_ADVD3WUC 0x00100000 |
| 5535 | /* phy power management enable */ |
| 5536 | #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000 |
| 5537 | ctrl |= E1000_CTRL_ADVD3WUC; |
| 5538 | wr32(E1000_CTRL, ctrl); |
| 5539 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5540 | /* Allow time for pending master requests to run */ |
| 5541 | igb_disable_pcie_master(&adapter->hw); |
| 5542 | |
| 5543 | wr32(E1000_WUC, E1000_WUC_PME_EN); |
| 5544 | wr32(E1000_WUFC, wufc); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5545 | } else { |
| 5546 | wr32(E1000_WUC, 0); |
| 5547 | wr32(E1000_WUFC, 0); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5548 | } |
| 5549 | |
Rafael J. Wysocki | 3fe7c4c | 2009-03-31 21:23:50 +0000 | [diff] [blame] | 5550 | *enable_wake = wufc || adapter->en_mng_pt; |
| 5551 | if (!*enable_wake) |
Alexander Duyck | 2fb02a2 | 2009-09-14 08:22:54 +0000 | [diff] [blame] | 5552 | igb_shutdown_serdes_link_82575(hw); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5553 | |
| 5554 | /* Release control of h/w to f/w. If f/w is AMT enabled, this |
| 5555 | * would have already happened in close and is redundant. */ |
| 5556 | igb_release_hw_control(adapter); |
| 5557 | |
| 5558 | pci_disable_device(pdev); |
| 5559 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5560 | return 0; |
| 5561 | } |
| 5562 | |
| 5563 | #ifdef CONFIG_PM |
Rafael J. Wysocki | 3fe7c4c | 2009-03-31 21:23:50 +0000 | [diff] [blame] | 5564 | static int igb_suspend(struct pci_dev *pdev, pm_message_t state) |
| 5565 | { |
| 5566 | int retval; |
| 5567 | bool wake; |
| 5568 | |
| 5569 | retval = __igb_shutdown(pdev, &wake); |
| 5570 | if (retval) |
| 5571 | return retval; |
| 5572 | |
| 5573 | if (wake) { |
| 5574 | pci_prepare_to_sleep(pdev); |
| 5575 | } else { |
| 5576 | pci_wake_from_d3(pdev, false); |
| 5577 | pci_set_power_state(pdev, PCI_D3hot); |
| 5578 | } |
| 5579 | |
| 5580 | return 0; |
| 5581 | } |
| 5582 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5583 | static int igb_resume(struct pci_dev *pdev) |
| 5584 | { |
| 5585 | struct net_device *netdev = pci_get_drvdata(pdev); |
| 5586 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 5587 | struct e1000_hw *hw = &adapter->hw; |
| 5588 | u32 err; |
| 5589 | |
| 5590 | pci_set_power_state(pdev, PCI_D0); |
| 5591 | pci_restore_state(pdev); |
Taku Izumi | 42bfd33a | 2008-06-20 12:10:30 +0900 | [diff] [blame] | 5592 | |
Alexander Duyck | aed5dec | 2009-02-06 23:16:04 +0000 | [diff] [blame] | 5593 | err = pci_enable_device_mem(pdev); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5594 | if (err) { |
| 5595 | dev_err(&pdev->dev, |
| 5596 | "igb: Cannot enable PCI device from suspend\n"); |
| 5597 | return err; |
| 5598 | } |
| 5599 | pci_set_master(pdev); |
| 5600 | |
| 5601 | pci_enable_wake(pdev, PCI_D3hot, 0); |
| 5602 | pci_enable_wake(pdev, PCI_D3cold, 0); |
| 5603 | |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 5604 | if (igb_init_interrupt_scheme(adapter)) { |
Alexander Duyck | a88f10e | 2008-07-08 15:13:38 -0700 | [diff] [blame] | 5605 | dev_err(&pdev->dev, "Unable to allocate memory for queues\n"); |
| 5606 | return -ENOMEM; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5607 | } |
| 5608 | |
| 5609 | /* e1000_power_up_phy(adapter); */ |
| 5610 | |
| 5611 | igb_reset(adapter); |
Alexander Duyck | a8564f0 | 2009-02-06 23:21:10 +0000 | [diff] [blame] | 5612 | |
| 5613 | /* let the f/w know that the h/w is now under the control of the |
| 5614 | * driver. */ |
| 5615 | igb_get_hw_control(adapter); |
| 5616 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5617 | wr32(E1000_WUS, ~0); |
| 5618 | |
Alexander Duyck | a88f10e | 2008-07-08 15:13:38 -0700 | [diff] [blame] | 5619 | if (netif_running(netdev)) { |
| 5620 | err = igb_open(netdev); |
| 5621 | if (err) |
| 5622 | return err; |
| 5623 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5624 | |
| 5625 | netif_device_attach(netdev); |
| 5626 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5627 | return 0; |
| 5628 | } |
| 5629 | #endif |
| 5630 | |
| 5631 | static void igb_shutdown(struct pci_dev *pdev) |
| 5632 | { |
Rafael J. Wysocki | 3fe7c4c | 2009-03-31 21:23:50 +0000 | [diff] [blame] | 5633 | bool wake; |
| 5634 | |
| 5635 | __igb_shutdown(pdev, &wake); |
| 5636 | |
| 5637 | if (system_state == SYSTEM_POWER_OFF) { |
| 5638 | pci_wake_from_d3(pdev, wake); |
| 5639 | pci_set_power_state(pdev, PCI_D3hot); |
| 5640 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5641 | } |
| 5642 | |
| 5643 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 5644 | /* |
| 5645 | * Polling 'interrupt' - used by things like netconsole to send skbs |
| 5646 | * without having to re-enable interrupts. It's not called while |
| 5647 | * the interrupt routine is executing. |
| 5648 | */ |
| 5649 | static void igb_netpoll(struct net_device *netdev) |
| 5650 | { |
| 5651 | struct igb_adapter *adapter = netdev_priv(netdev); |
Alexander Duyck | eebbbdb | 2009-02-06 23:19:29 +0000 | [diff] [blame] | 5652 | struct e1000_hw *hw = &adapter->hw; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5653 | int i; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5654 | |
Alexander Duyck | eebbbdb | 2009-02-06 23:19:29 +0000 | [diff] [blame] | 5655 | if (!adapter->msix_entries) { |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 5656 | struct igb_q_vector *q_vector = adapter->q_vector[0]; |
Alexander Duyck | eebbbdb | 2009-02-06 23:19:29 +0000 | [diff] [blame] | 5657 | igb_irq_disable(adapter); |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 5658 | napi_schedule(&q_vector->napi); |
Alexander Duyck | eebbbdb | 2009-02-06 23:19:29 +0000 | [diff] [blame] | 5659 | return; |
| 5660 | } |
Alexander Duyck | 7dfc16f | 2008-07-08 15:10:46 -0700 | [diff] [blame] | 5661 | |
Alexander Duyck | 047e003 | 2009-10-27 15:49:27 +0000 | [diff] [blame] | 5662 | for (i = 0; i < adapter->num_q_vectors; i++) { |
| 5663 | struct igb_q_vector *q_vector = adapter->q_vector[i]; |
| 5664 | wr32(E1000_EIMC, q_vector->eims_value); |
| 5665 | napi_schedule(&q_vector->napi); |
Alexander Duyck | eebbbdb | 2009-02-06 23:19:29 +0000 | [diff] [blame] | 5666 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5667 | } |
| 5668 | #endif /* CONFIG_NET_POLL_CONTROLLER */ |
| 5669 | |
| 5670 | /** |
| 5671 | * igb_io_error_detected - called when PCI error is detected |
| 5672 | * @pdev: Pointer to PCI device |
| 5673 | * @state: The current pci connection state |
| 5674 | * |
| 5675 | * This function is called after a PCI bus error affecting |
| 5676 | * this device has been detected. |
| 5677 | */ |
| 5678 | static pci_ers_result_t igb_io_error_detected(struct pci_dev *pdev, |
| 5679 | pci_channel_state_t state) |
| 5680 | { |
| 5681 | struct net_device *netdev = pci_get_drvdata(pdev); |
| 5682 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 5683 | |
| 5684 | netif_device_detach(netdev); |
| 5685 | |
Alexander Duyck | 59ed6ee | 2009-06-30 12:46:34 +0000 | [diff] [blame] | 5686 | if (state == pci_channel_io_perm_failure) |
| 5687 | return PCI_ERS_RESULT_DISCONNECT; |
| 5688 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5689 | if (netif_running(netdev)) |
| 5690 | igb_down(adapter); |
| 5691 | pci_disable_device(pdev); |
| 5692 | |
| 5693 | /* Request a slot slot reset. */ |
| 5694 | return PCI_ERS_RESULT_NEED_RESET; |
| 5695 | } |
| 5696 | |
| 5697 | /** |
| 5698 | * igb_io_slot_reset - called after the pci bus has been reset. |
| 5699 | * @pdev: Pointer to PCI device |
| 5700 | * |
| 5701 | * Restart the card from scratch, as if from a cold-boot. Implementation |
| 5702 | * resembles the first-half of the igb_resume routine. |
| 5703 | */ |
| 5704 | static pci_ers_result_t igb_io_slot_reset(struct pci_dev *pdev) |
| 5705 | { |
| 5706 | struct net_device *netdev = pci_get_drvdata(pdev); |
| 5707 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 5708 | struct e1000_hw *hw = &adapter->hw; |
Alexander Duyck | 40a914f | 2008-11-27 00:24:37 -0800 | [diff] [blame] | 5709 | pci_ers_result_t result; |
Taku Izumi | 42bfd33a | 2008-06-20 12:10:30 +0900 | [diff] [blame] | 5710 | int err; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5711 | |
Alexander Duyck | aed5dec | 2009-02-06 23:16:04 +0000 | [diff] [blame] | 5712 | if (pci_enable_device_mem(pdev)) { |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5713 | dev_err(&pdev->dev, |
| 5714 | "Cannot re-enable PCI device after reset.\n"); |
Alexander Duyck | 40a914f | 2008-11-27 00:24:37 -0800 | [diff] [blame] | 5715 | result = PCI_ERS_RESULT_DISCONNECT; |
| 5716 | } else { |
| 5717 | pci_set_master(pdev); |
| 5718 | pci_restore_state(pdev); |
| 5719 | |
| 5720 | pci_enable_wake(pdev, PCI_D3hot, 0); |
| 5721 | pci_enable_wake(pdev, PCI_D3cold, 0); |
| 5722 | |
| 5723 | igb_reset(adapter); |
| 5724 | wr32(E1000_WUS, ~0); |
| 5725 | result = PCI_ERS_RESULT_RECOVERED; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5726 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5727 | |
Jeff Kirsher | ea943d4 | 2008-12-11 20:34:19 -0800 | [diff] [blame] | 5728 | err = pci_cleanup_aer_uncorrect_error_status(pdev); |
| 5729 | if (err) { |
| 5730 | dev_err(&pdev->dev, "pci_cleanup_aer_uncorrect_error_status " |
| 5731 | "failed 0x%0x\n", err); |
| 5732 | /* non-fatal, continue */ |
| 5733 | } |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5734 | |
Alexander Duyck | 40a914f | 2008-11-27 00:24:37 -0800 | [diff] [blame] | 5735 | return result; |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5736 | } |
| 5737 | |
| 5738 | /** |
| 5739 | * igb_io_resume - called when traffic can start flowing again. |
| 5740 | * @pdev: Pointer to PCI device |
| 5741 | * |
| 5742 | * This callback is called when the error recovery driver tells us that |
| 5743 | * its OK to resume normal operation. Implementation resembles the |
| 5744 | * second-half of the igb_resume routine. |
| 5745 | */ |
| 5746 | static void igb_io_resume(struct pci_dev *pdev) |
| 5747 | { |
| 5748 | struct net_device *netdev = pci_get_drvdata(pdev); |
| 5749 | struct igb_adapter *adapter = netdev_priv(netdev); |
| 5750 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5751 | if (netif_running(netdev)) { |
| 5752 | if (igb_up(adapter)) { |
| 5753 | dev_err(&pdev->dev, "igb_up failed after reset\n"); |
| 5754 | return; |
| 5755 | } |
| 5756 | } |
| 5757 | |
| 5758 | netif_device_attach(netdev); |
| 5759 | |
| 5760 | /* let the f/w know that the h/w is now under the control of the |
| 5761 | * driver. */ |
| 5762 | igb_get_hw_control(adapter); |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5763 | } |
| 5764 | |
Alexander Duyck | 26ad917 | 2009-10-05 06:32:49 +0000 | [diff] [blame] | 5765 | static void igb_rar_set_qsel(struct igb_adapter *adapter, u8 *addr, u32 index, |
| 5766 | u8 qsel) |
| 5767 | { |
| 5768 | u32 rar_low, rar_high; |
| 5769 | struct e1000_hw *hw = &adapter->hw; |
| 5770 | |
| 5771 | /* HW expects these in little endian so we reverse the byte order |
| 5772 | * from network order (big endian) to little endian |
| 5773 | */ |
| 5774 | rar_low = ((u32) addr[0] | ((u32) addr[1] << 8) | |
| 5775 | ((u32) addr[2] << 16) | ((u32) addr[3] << 24)); |
| 5776 | rar_high = ((u32) addr[4] | ((u32) addr[5] << 8)); |
| 5777 | |
| 5778 | /* Indicate to hardware the Address is Valid. */ |
| 5779 | rar_high |= E1000_RAH_AV; |
| 5780 | |
| 5781 | if (hw->mac.type == e1000_82575) |
| 5782 | rar_high |= E1000_RAH_POOL_1 * qsel; |
| 5783 | else |
| 5784 | rar_high |= E1000_RAH_POOL_1 << qsel; |
| 5785 | |
| 5786 | wr32(E1000_RAL(index), rar_low); |
| 5787 | wrfl(); |
| 5788 | wr32(E1000_RAH(index), rar_high); |
| 5789 | wrfl(); |
| 5790 | } |
| 5791 | |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 5792 | static int igb_set_vf_mac(struct igb_adapter *adapter, |
| 5793 | int vf, unsigned char *mac_addr) |
| 5794 | { |
| 5795 | struct e1000_hw *hw = &adapter->hw; |
Alexander Duyck | ff41f8d | 2009-09-03 14:48:56 +0000 | [diff] [blame] | 5796 | /* VF MAC addresses start at end of receive addresses and moves |
| 5797 | * torwards the first, as a result a collision should not be possible */ |
| 5798 | int rar_entry = hw->mac.rar_entry_count - (vf + 1); |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 5799 | |
Alexander Duyck | 3768011 | 2009-02-19 20:40:30 -0800 | [diff] [blame] | 5800 | memcpy(adapter->vf_data[vf].vf_mac_addresses, mac_addr, ETH_ALEN); |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 5801 | |
Alexander Duyck | 26ad917 | 2009-10-05 06:32:49 +0000 | [diff] [blame] | 5802 | igb_rar_set_qsel(adapter, mac_addr, rar_entry, vf); |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 5803 | |
| 5804 | return 0; |
| 5805 | } |
| 5806 | |
| 5807 | static void igb_vmm_control(struct igb_adapter *adapter) |
| 5808 | { |
| 5809 | struct e1000_hw *hw = &adapter->hw; |
Alexander Duyck | 10d8e90 | 2009-10-27 15:54:04 +0000 | [diff] [blame] | 5810 | u32 reg; |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 5811 | |
Alexander Duyck | d496030 | 2009-10-27 15:53:45 +0000 | [diff] [blame] | 5812 | /* replication is not supported for 82575 */ |
| 5813 | if (hw->mac.type == e1000_82575) |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 5814 | return; |
| 5815 | |
Alexander Duyck | 10d8e90 | 2009-10-27 15:54:04 +0000 | [diff] [blame] | 5816 | /* enable replication vlan tag stripping */ |
| 5817 | reg = rd32(E1000_RPLOLR); |
| 5818 | reg |= E1000_RPLOLR_STRVLAN; |
| 5819 | wr32(E1000_RPLOLR, reg); |
| 5820 | |
| 5821 | /* notify HW that the MAC is adding vlan tags */ |
| 5822 | reg = rd32(E1000_DTXCTL); |
| 5823 | reg |= E1000_DTXCTL_VLAN_ADDED; |
| 5824 | wr32(E1000_DTXCTL, reg); |
| 5825 | |
Alexander Duyck | d496030 | 2009-10-27 15:53:45 +0000 | [diff] [blame] | 5826 | if (adapter->vfs_allocated_count) { |
| 5827 | igb_vmdq_set_loopback_pf(hw, true); |
| 5828 | igb_vmdq_set_replication_pf(hw, true); |
| 5829 | } else { |
| 5830 | igb_vmdq_set_loopback_pf(hw, false); |
| 5831 | igb_vmdq_set_replication_pf(hw, false); |
| 5832 | } |
Alexander Duyck | 4ae196d | 2009-02-19 20:40:07 -0800 | [diff] [blame] | 5833 | } |
| 5834 | |
Auke Kok | 9d5c824 | 2008-01-24 02:22:38 -0800 | [diff] [blame] | 5835 | /* igb_main.c */ |