Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /******************************************************************************* |
| 2 | |
Auke Kok | 0abb6eb | 2006-09-27 12:53:14 -0700 | [diff] [blame] | 3 | Intel PRO/10GbE Linux driver |
Jesse Brandeburg | f731a9e | 2008-07-08 15:53:09 -0700 | [diff] [blame] | 4 | Copyright(c) 1999 - 2008 Intel Corporation. |
Auke Kok | 0abb6eb | 2006-09-27 12:53:14 -0700 | [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 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 13 | more details. |
Auke Kok | 0abb6eb | 2006-09-27 12:53:14 -0700 | [diff] [blame] | 14 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 15 | You should have received a copy of the GNU General Public License along with |
Auke Kok | 0abb6eb | 2006-09-27 12:53:14 -0700 | [diff] [blame] | 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 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 22 | Contact Information: |
| 23 | Linux NICS <linux.nics@intel.com> |
Auke Kok | 0abb6eb | 2006-09-27 12:53:14 -0700 | [diff] [blame] | 24 | e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 25 | Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
| 26 | |
| 27 | *******************************************************************************/ |
| 28 | |
| 29 | #include "ixgb.h" |
| 30 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | char ixgb_driver_name[] = "ixgb"; |
Adrian Bunk | e9ab1d1 | 2005-10-30 16:53:30 +0100 | [diff] [blame] | 32 | static char ixgb_driver_string[] = "Intel(R) PRO/10GbE Network Driver"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | #define DRIVERNAPI "-NAPI" |
Jesse Brandeburg | f731a9e | 2008-07-08 15:53:09 -0700 | [diff] [blame] | 35 | #define DRV_VERSION "1.0.135-k2" DRIVERNAPI |
Stephen Hemminger | 273dc74 | 2007-10-29 10:46:13 -0700 | [diff] [blame] | 36 | const char ixgb_driver_version[] = DRV_VERSION; |
Jesse Brandeburg | f731a9e | 2008-07-08 15:53:09 -0700 | [diff] [blame] | 37 | static const char ixgb_copyright[] = "Copyright (c) 1999-2008 Intel Corporation."; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | |
Jesse Brandeburg | d9fed18 | 2008-07-08 15:52:02 -0700 | [diff] [blame] | 39 | #define IXGB_CB_LENGTH 256 |
| 40 | static unsigned int copybreak __read_mostly = IXGB_CB_LENGTH; |
| 41 | module_param(copybreak, uint, 0644); |
| 42 | MODULE_PARM_DESC(copybreak, |
| 43 | "Maximum size of packet that is copied to a new buffer on receive"); |
| 44 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | /* ixgb_pci_tbl - PCI Device ID Table |
| 46 | * |
| 47 | * Wildcard entries (PCI_ANY_ID) should come last |
| 48 | * Last entry must be all 0s |
| 49 | * |
| 50 | * { Vendor ID, Device ID, SubVendor ID, SubDevice ID, |
| 51 | * Class, Class Mask, private data (not used) } |
| 52 | */ |
| 53 | static struct pci_device_id ixgb_pci_tbl[] = { |
| 54 | {INTEL_VENDOR_ID, IXGB_DEVICE_ID_82597EX, |
| 55 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, |
Auke Kok | 940829e | 2006-05-23 10:29:58 -0700 | [diff] [blame] | 56 | {INTEL_VENDOR_ID, IXGB_DEVICE_ID_82597EX_CX4, |
| 57 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | {INTEL_VENDOR_ID, IXGB_DEVICE_ID_82597EX_SR, |
| 59 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, |
Jesse Brandeburg | 7490d71 | 2008-07-08 15:52:08 -0700 | [diff] [blame] | 60 | {INTEL_VENDOR_ID, IXGB_DEVICE_ID_82597EX_LR, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 61 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, |
| 62 | |
| 63 | /* required last entry */ |
| 64 | {0,} |
| 65 | }; |
| 66 | |
| 67 | MODULE_DEVICE_TABLE(pci, ixgb_pci_tbl); |
| 68 | |
| 69 | /* Local Function Prototypes */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 70 | static int ixgb_init_module(void); |
| 71 | static void ixgb_exit_module(void); |
| 72 | static int ixgb_probe(struct pci_dev *pdev, const struct pci_device_id *ent); |
| 73 | static void __devexit ixgb_remove(struct pci_dev *pdev); |
| 74 | static int ixgb_sw_init(struct ixgb_adapter *adapter); |
| 75 | static int ixgb_open(struct net_device *netdev); |
| 76 | static int ixgb_close(struct net_device *netdev); |
| 77 | static void ixgb_configure_tx(struct ixgb_adapter *adapter); |
| 78 | static void ixgb_configure_rx(struct ixgb_adapter *adapter); |
| 79 | static void ixgb_setup_rctl(struct ixgb_adapter *adapter); |
| 80 | static void ixgb_clean_tx_ring(struct ixgb_adapter *adapter); |
| 81 | static void ixgb_clean_rx_ring(struct ixgb_adapter *adapter); |
| 82 | static void ixgb_set_multi(struct net_device *netdev); |
| 83 | static void ixgb_watchdog(unsigned long data); |
| 84 | static int ixgb_xmit_frame(struct sk_buff *skb, struct net_device *netdev); |
| 85 | static struct net_device_stats *ixgb_get_stats(struct net_device *netdev); |
| 86 | static int ixgb_change_mtu(struct net_device *netdev, int new_mtu); |
| 87 | static int ixgb_set_mac(struct net_device *netdev, void *p); |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 88 | static irqreturn_t ixgb_intr(int irq, void *data); |
Joe Perches | 446490c | 2008-03-21 11:06:37 -0700 | [diff] [blame] | 89 | static bool ixgb_clean_tx_irq(struct ixgb_adapter *adapter); |
Malli Chilakala | ac79c82 | 2005-04-28 19:05:32 -0700 | [diff] [blame] | 90 | |
Jesse Brandeburg | 7490d71 | 2008-07-08 15:52:08 -0700 | [diff] [blame] | 91 | static int ixgb_clean(struct napi_struct *, int); |
| 92 | static bool ixgb_clean_rx_irq(struct ixgb_adapter *, int *, int); |
Jesse Brandeburg | fc2d14e | 2008-07-08 15:52:43 -0700 | [diff] [blame] | 93 | static void ixgb_alloc_rx_buffers(struct ixgb_adapter *, int); |
Jesse Brandeburg | 7490d71 | 2008-07-08 15:52:08 -0700 | [diff] [blame] | 94 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 95 | static void ixgb_tx_timeout(struct net_device *dev); |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 96 | static void ixgb_tx_timeout_task(struct work_struct *work); |
Jesse Brandeburg | 7490d71 | 2008-07-08 15:52:08 -0700 | [diff] [blame] | 97 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 98 | static void ixgb_vlan_rx_register(struct net_device *netdev, |
Jesse Brandeburg | 7490d71 | 2008-07-08 15:52:08 -0700 | [diff] [blame] | 99 | struct vlan_group *grp); |
Joe Perches | 222441a | 2008-04-03 10:06:25 -0700 | [diff] [blame] | 100 | static void ixgb_vlan_rx_add_vid(struct net_device *netdev, u16 vid); |
| 101 | static void ixgb_vlan_rx_kill_vid(struct net_device *netdev, u16 vid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 102 | static void ixgb_restore_vlan(struct ixgb_adapter *adapter); |
| 103 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 104 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 105 | /* for netdump / net console */ |
| 106 | static void ixgb_netpoll(struct net_device *dev); |
| 107 | #endif |
| 108 | |
Linas Vepstas | 01748fb | 2006-08-31 14:27:52 -0700 | [diff] [blame] | 109 | static pci_ers_result_t ixgb_io_error_detected (struct pci_dev *pdev, |
Jesse Brandeburg | 7490d71 | 2008-07-08 15:52:08 -0700 | [diff] [blame] | 110 | enum pci_channel_state state); |
Linas Vepstas | 01748fb | 2006-08-31 14:27:52 -0700 | [diff] [blame] | 111 | static pci_ers_result_t ixgb_io_slot_reset (struct pci_dev *pdev); |
| 112 | static void ixgb_io_resume (struct pci_dev *pdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | |
Linas Vepstas | 01748fb | 2006-08-31 14:27:52 -0700 | [diff] [blame] | 114 | static struct pci_error_handlers ixgb_err_handler = { |
| 115 | .error_detected = ixgb_io_error_detected, |
| 116 | .slot_reset = ixgb_io_slot_reset, |
| 117 | .resume = ixgb_io_resume, |
| 118 | }; |
| 119 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 120 | static struct pci_driver ixgb_driver = { |
Malli Chilakala | c2eba93 | 2005-04-28 19:04:32 -0700 | [diff] [blame] | 121 | .name = ixgb_driver_name, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 122 | .id_table = ixgb_pci_tbl, |
Malli Chilakala | c2eba93 | 2005-04-28 19:04:32 -0700 | [diff] [blame] | 123 | .probe = ixgb_probe, |
| 124 | .remove = __devexit_p(ixgb_remove), |
Linas Vepstas | 01748fb | 2006-08-31 14:27:52 -0700 | [diff] [blame] | 125 | .err_handler = &ixgb_err_handler |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 126 | }; |
| 127 | |
| 128 | MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>"); |
| 129 | MODULE_DESCRIPTION("Intel(R) PRO/10GbE Network Driver"); |
| 130 | MODULE_LICENSE("GPL"); |
John W. Linville | 01e5abc | 2005-05-12 22:23:29 -0400 | [diff] [blame] | 131 | MODULE_VERSION(DRV_VERSION); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 132 | |
Auke Kok | ec9c3f5 | 2006-05-23 10:34:59 -0700 | [diff] [blame] | 133 | #define DEFAULT_DEBUG_LEVEL_SHIFT 3 |
| 134 | static int debug = DEFAULT_DEBUG_LEVEL_SHIFT; |
| 135 | module_param(debug, int, 0); |
| 136 | MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)"); |
| 137 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 138 | /** |
| 139 | * ixgb_init_module - Driver Registration Routine |
| 140 | * |
| 141 | * ixgb_init_module is the first routine called when the driver is |
| 142 | * loaded. All it does is register with the PCI subsystem. |
| 143 | **/ |
| 144 | |
| 145 | static int __init |
| 146 | ixgb_init_module(void) |
| 147 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 148 | printk(KERN_INFO "%s - version %s\n", |
| 149 | ixgb_driver_string, ixgb_driver_version); |
| 150 | |
| 151 | printk(KERN_INFO "%s\n", ixgb_copyright); |
| 152 | |
Jeff Garzik | 2991762 | 2006-08-19 17:48:59 -0400 | [diff] [blame] | 153 | return pci_register_driver(&ixgb_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 154 | } |
| 155 | |
| 156 | module_init(ixgb_init_module); |
| 157 | |
| 158 | /** |
| 159 | * ixgb_exit_module - Driver Exit Cleanup Routine |
| 160 | * |
| 161 | * ixgb_exit_module is called just before the driver is removed |
| 162 | * from memory. |
| 163 | **/ |
| 164 | |
| 165 | static void __exit |
| 166 | ixgb_exit_module(void) |
| 167 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 168 | pci_unregister_driver(&ixgb_driver); |
| 169 | } |
| 170 | |
| 171 | module_exit(ixgb_exit_module); |
| 172 | |
| 173 | /** |
| 174 | * ixgb_irq_disable - Mask off interrupt generation on the NIC |
| 175 | * @adapter: board private structure |
| 176 | **/ |
| 177 | |
Auke Kok | 235949d1 | 2006-05-26 09:35:52 -0700 | [diff] [blame] | 178 | static void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 179 | ixgb_irq_disable(struct ixgb_adapter *adapter) |
| 180 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 181 | IXGB_WRITE_REG(&adapter->hw, IMC, ~0); |
| 182 | IXGB_WRITE_FLUSH(&adapter->hw); |
| 183 | synchronize_irq(adapter->pdev->irq); |
| 184 | } |
| 185 | |
| 186 | /** |
| 187 | * ixgb_irq_enable - Enable default interrupt generation settings |
| 188 | * @adapter: board private structure |
| 189 | **/ |
| 190 | |
Auke Kok | 235949d1 | 2006-05-26 09:35:52 -0700 | [diff] [blame] | 191 | static void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 192 | ixgb_irq_enable(struct ixgb_adapter *adapter) |
| 193 | { |
Jesse Brandeburg | 9c61a9d | 2008-03-21 11:07:03 -0700 | [diff] [blame] | 194 | u32 val = IXGB_INT_RXT0 | IXGB_INT_RXDMT0 | |
| 195 | IXGB_INT_TXDW | IXGB_INT_LSC; |
| 196 | if (adapter->hw.subsystem_vendor_id == SUN_SUBVENDOR_ID) |
| 197 | val |= IXGB_INT_GPI0; |
| 198 | IXGB_WRITE_REG(&adapter->hw, IMS, val); |
| 199 | IXGB_WRITE_FLUSH(&adapter->hw); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 200 | } |
| 201 | |
| 202 | int |
| 203 | ixgb_up(struct ixgb_adapter *adapter) |
| 204 | { |
| 205 | struct net_device *netdev = adapter->netdev; |
Auke Kok | fb136c0 | 2007-05-17 15:29:07 -0700 | [diff] [blame] | 206 | int err, irq_flags = IRQF_SHARED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 207 | int max_frame = netdev->mtu + ENET_HEADER_SIZE + ENET_FCS_LENGTH; |
| 208 | struct ixgb_hw *hw = &adapter->hw; |
| 209 | |
| 210 | /* hardware has been reset, we need to reload some things */ |
| 211 | |
Auke Kok | 8556f0d1 | 2006-05-26 09:35:32 -0700 | [diff] [blame] | 212 | ixgb_rar_set(hw, netdev->dev_addr, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 213 | ixgb_set_multi(netdev); |
| 214 | |
| 215 | ixgb_restore_vlan(adapter); |
| 216 | |
| 217 | ixgb_configure_tx(adapter); |
| 218 | ixgb_setup_rctl(adapter); |
| 219 | ixgb_configure_rx(adapter); |
Jesse Brandeburg | fc2d14e | 2008-07-08 15:52:43 -0700 | [diff] [blame] | 220 | ixgb_alloc_rx_buffers(adapter, IXGB_DESC_UNUSED(&adapter->rx_ring)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 221 | |
Auke Kok | e59d169 | 2006-05-26 09:35:28 -0700 | [diff] [blame] | 222 | /* disable interrupts and get the hardware into a known state */ |
| 223 | IXGB_WRITE_REG(&adapter->hw, IMC, 0xffffffff); |
| 224 | |
Auke Kok | fb136c0 | 2007-05-17 15:29:07 -0700 | [diff] [blame] | 225 | /* only enable MSI if bus is in PCI-X mode */ |
| 226 | if (IXGB_READ_REG(&adapter->hw, STATUS) & IXGB_STATUS_PCIX_MODE) { |
| 227 | err = pci_enable_msi(adapter->pdev); |
| 228 | if (!err) { |
| 229 | adapter->have_msi = 1; |
| 230 | irq_flags = 0; |
| 231 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 232 | /* proceed to try to request regular interrupt */ |
| 233 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 234 | |
Auke Kok | fb136c0 | 2007-05-17 15:29:07 -0700 | [diff] [blame] | 235 | err = request_irq(adapter->pdev->irq, &ixgb_intr, irq_flags, |
| 236 | netdev->name, netdev); |
| 237 | if (err) { |
| 238 | if (adapter->have_msi) |
| 239 | pci_disable_msi(adapter->pdev); |
Auke Kok | ec9c3f5 | 2006-05-23 10:34:59 -0700 | [diff] [blame] | 240 | DPRINTK(PROBE, ERR, |
| 241 | "Unable to allocate interrupt Error: %d\n", err); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 242 | return err; |
Auke Kok | ec9c3f5 | 2006-05-23 10:34:59 -0700 | [diff] [blame] | 243 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 244 | |
Jesse Brandeburg | 03f8304 | 2008-07-08 15:52:13 -0700 | [diff] [blame] | 245 | if ((hw->max_frame_size != max_frame) || |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 246 | (hw->max_frame_size != |
| 247 | (IXGB_READ_REG(hw, MFS) >> IXGB_MFS_SHIFT))) { |
| 248 | |
| 249 | hw->max_frame_size = max_frame; |
| 250 | |
| 251 | IXGB_WRITE_REG(hw, MFS, hw->max_frame_size << IXGB_MFS_SHIFT); |
| 252 | |
Jesse Brandeburg | 03f8304 | 2008-07-08 15:52:13 -0700 | [diff] [blame] | 253 | if (hw->max_frame_size > |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 254 | IXGB_MAX_ENET_FRAME_SIZE_WITHOUT_FCS + ENET_FCS_LENGTH) { |
Joe Perches | 222441a | 2008-04-03 10:06:25 -0700 | [diff] [blame] | 255 | u32 ctrl0 = IXGB_READ_REG(hw, CTRL0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 256 | |
Jesse Brandeburg | 03f8304 | 2008-07-08 15:52:13 -0700 | [diff] [blame] | 257 | if (!(ctrl0 & IXGB_CTRL0_JFE)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 258 | ctrl0 |= IXGB_CTRL0_JFE; |
| 259 | IXGB_WRITE_REG(hw, CTRL0, ctrl0); |
| 260 | } |
| 261 | } |
| 262 | } |
| 263 | |
Jesse Brandeburg | bab2bce | 2008-03-21 11:06:32 -0700 | [diff] [blame] | 264 | clear_bit(__IXGB_DOWN, &adapter->flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 265 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 266 | napi_enable(&adapter->napi); |
Auke Kok | e59d169 | 2006-05-26 09:35:28 -0700 | [diff] [blame] | 267 | ixgb_irq_enable(adapter); |
| 268 | |
Jesse Brandeburg | bab2bce | 2008-03-21 11:06:32 -0700 | [diff] [blame] | 269 | mod_timer(&adapter->watchdog_timer, jiffies); |
| 270 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 271 | return 0; |
| 272 | } |
| 273 | |
| 274 | void |
Joe Perches | 446490c | 2008-03-21 11:06:37 -0700 | [diff] [blame] | 275 | ixgb_down(struct ixgb_adapter *adapter, bool kill_watchdog) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 276 | { |
| 277 | struct net_device *netdev = adapter->netdev; |
| 278 | |
Jesse Brandeburg | bab2bce | 2008-03-21 11:06:32 -0700 | [diff] [blame] | 279 | /* prevent the interrupt handler from restarting watchdog */ |
| 280 | set_bit(__IXGB_DOWN, &adapter->flags); |
| 281 | |
David S. Miller | 49d85c5 | 2008-01-18 04:21:39 -0800 | [diff] [blame] | 282 | napi_disable(&adapter->napi); |
Jesse Brandeburg | bab2bce | 2008-03-21 11:06:32 -0700 | [diff] [blame] | 283 | /* waiting for NAPI to complete can re-enable interrupts */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 284 | ixgb_irq_disable(adapter); |
| 285 | free_irq(adapter->pdev->irq, netdev); |
Auke Kok | fb136c0 | 2007-05-17 15:29:07 -0700 | [diff] [blame] | 286 | |
| 287 | if (adapter->have_msi) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 288 | pci_disable_msi(adapter->pdev); |
| 289 | |
Jesse Brandeburg | 03f8304 | 2008-07-08 15:52:13 -0700 | [diff] [blame] | 290 | if (kill_watchdog) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 291 | del_timer_sync(&adapter->watchdog_timer); |
David S. Miller | 49d85c5 | 2008-01-18 04:21:39 -0800 | [diff] [blame] | 292 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 293 | adapter->link_speed = 0; |
| 294 | adapter->link_duplex = 0; |
| 295 | netif_carrier_off(netdev); |
| 296 | netif_stop_queue(netdev); |
| 297 | |
| 298 | ixgb_reset(adapter); |
| 299 | ixgb_clean_tx_ring(adapter); |
| 300 | ixgb_clean_rx_ring(adapter); |
| 301 | } |
| 302 | |
| 303 | void |
| 304 | ixgb_reset(struct ixgb_adapter *adapter) |
| 305 | { |
Matheos Worku | 3fd7131 | 2007-12-14 11:48:29 -0800 | [diff] [blame] | 306 | struct ixgb_hw *hw = &adapter->hw; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 307 | |
Matheos Worku | 3fd7131 | 2007-12-14 11:48:29 -0800 | [diff] [blame] | 308 | ixgb_adapter_stop(hw); |
| 309 | if (!ixgb_init_hw(hw)) |
Auke Kok | ec9c3f5 | 2006-05-23 10:34:59 -0700 | [diff] [blame] | 310 | DPRINTK(PROBE, ERR, "ixgb_init_hw failed.\n"); |
Matheos Worku | 3fd7131 | 2007-12-14 11:48:29 -0800 | [diff] [blame] | 311 | |
| 312 | /* restore frame size information */ |
| 313 | IXGB_WRITE_REG(hw, MFS, hw->max_frame_size << IXGB_MFS_SHIFT); |
| 314 | if (hw->max_frame_size > |
| 315 | IXGB_MAX_ENET_FRAME_SIZE_WITHOUT_FCS + ENET_FCS_LENGTH) { |
| 316 | u32 ctrl0 = IXGB_READ_REG(hw, CTRL0); |
| 317 | if (!(ctrl0 & IXGB_CTRL0_JFE)) { |
| 318 | ctrl0 |= IXGB_CTRL0_JFE; |
| 319 | IXGB_WRITE_REG(hw, CTRL0, ctrl0); |
| 320 | } |
| 321 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 322 | } |
| 323 | |
| 324 | /** |
| 325 | * ixgb_probe - Device Initialization Routine |
| 326 | * @pdev: PCI device information struct |
| 327 | * @ent: entry in ixgb_pci_tbl |
| 328 | * |
| 329 | * Returns 0 on success, negative on failure |
| 330 | * |
| 331 | * ixgb_probe initializes an adapter identified by a pci_dev structure. |
| 332 | * The OS initialization, configuring of the adapter private structure, |
| 333 | * and a hardware reset occur. |
| 334 | **/ |
| 335 | |
| 336 | static int __devinit |
Jesse Brandeburg | 0060c07 | 2008-07-08 15:52:23 -0700 | [diff] [blame] | 337 | ixgb_probe(struct pci_dev *pdev, const struct pci_device_id *ent) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 338 | { |
| 339 | struct net_device *netdev = NULL; |
| 340 | struct ixgb_adapter *adapter; |
| 341 | static int cards_found = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 342 | int pci_using_dac; |
| 343 | int i; |
| 344 | int err; |
| 345 | |
Jesse Brandeburg | 9e7bd33 | 2008-07-08 15:52:48 -0700 | [diff] [blame] | 346 | err = pci_enable_device(pdev); |
| 347 | if (err) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 348 | return err; |
| 349 | |
Jesse Brandeburg | 03f8304 | 2008-07-08 15:52:13 -0700 | [diff] [blame] | 350 | if (!(err = pci_set_dma_mask(pdev, DMA_64BIT_MASK)) && |
Jesse Brandeburg | 9e7bd33 | 2008-07-08 15:52:48 -0700 | [diff] [blame] | 351 | !(err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 352 | pci_using_dac = 1; |
| 353 | } else { |
Jesse Brandeburg | 03f8304 | 2008-07-08 15:52:13 -0700 | [diff] [blame] | 354 | if ((err = pci_set_dma_mask(pdev, DMA_32BIT_MASK)) || |
Jesse Brandeburg | 9e7bd33 | 2008-07-08 15:52:48 -0700 | [diff] [blame] | 355 | (err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK))) { |
Auke Kok | ec9c3f5 | 2006-05-23 10:34:59 -0700 | [diff] [blame] | 356 | printk(KERN_ERR |
| 357 | "ixgb: No usable DMA configuration, aborting\n"); |
Andreas Schwab | c91e468 | 2006-03-28 18:10:38 +0200 | [diff] [blame] | 358 | goto err_dma_mask; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 359 | } |
| 360 | pci_using_dac = 0; |
| 361 | } |
| 362 | |
Jesse Brandeburg | 9e7bd33 | 2008-07-08 15:52:48 -0700 | [diff] [blame] | 363 | err = pci_request_regions(pdev, ixgb_driver_name); |
| 364 | if (err) |
Andreas Schwab | c91e468 | 2006-03-28 18:10:38 +0200 | [diff] [blame] | 365 | goto err_request_regions; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 366 | |
| 367 | pci_set_master(pdev); |
| 368 | |
| 369 | netdev = alloc_etherdev(sizeof(struct ixgb_adapter)); |
Jesse Brandeburg | 03f8304 | 2008-07-08 15:52:13 -0700 | [diff] [blame] | 370 | if (!netdev) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 371 | err = -ENOMEM; |
| 372 | goto err_alloc_etherdev; |
| 373 | } |
| 374 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 375 | SET_NETDEV_DEV(netdev, &pdev->dev); |
| 376 | |
| 377 | pci_set_drvdata(pdev, netdev); |
Malli Chilakala | 8908c6c | 2005-08-11 13:58:40 -0700 | [diff] [blame] | 378 | adapter = netdev_priv(netdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 379 | adapter->netdev = netdev; |
| 380 | adapter->pdev = pdev; |
| 381 | adapter->hw.back = adapter; |
Auke Kok | ec9c3f5 | 2006-05-23 10:34:59 -0700 | [diff] [blame] | 382 | adapter->msg_enable = netif_msg_init(debug, DEFAULT_DEBUG_LEVEL_SHIFT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 383 | |
Jesse Brandeburg | e539e46 | 2008-07-08 15:51:12 -0700 | [diff] [blame] | 384 | adapter->hw.hw_addr = ioremap(pci_resource_start(pdev, BAR_0), |
| 385 | pci_resource_len(pdev, BAR_0)); |
| 386 | if (!adapter->hw.hw_addr) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 387 | err = -EIO; |
| 388 | goto err_ioremap; |
| 389 | } |
| 390 | |
Jesse Brandeburg | 1459336 | 2008-07-08 15:52:33 -0700 | [diff] [blame] | 391 | for (i = BAR_1; i <= BAR_5; i++) { |
Jesse Brandeburg | 03f8304 | 2008-07-08 15:52:13 -0700 | [diff] [blame] | 392 | if (pci_resource_len(pdev, i) == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 393 | continue; |
Jesse Brandeburg | 03f8304 | 2008-07-08 15:52:13 -0700 | [diff] [blame] | 394 | if (pci_resource_flags(pdev, i) & IORESOURCE_IO) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 395 | adapter->hw.io_base = pci_resource_start(pdev, i); |
| 396 | break; |
| 397 | } |
| 398 | } |
| 399 | |
| 400 | netdev->open = &ixgb_open; |
| 401 | netdev->stop = &ixgb_close; |
| 402 | netdev->hard_start_xmit = &ixgb_xmit_frame; |
| 403 | netdev->get_stats = &ixgb_get_stats; |
| 404 | netdev->set_multicast_list = &ixgb_set_multi; |
| 405 | netdev->set_mac_address = &ixgb_set_mac; |
| 406 | netdev->change_mtu = &ixgb_change_mtu; |
| 407 | ixgb_set_ethtool_ops(netdev); |
| 408 | netdev->tx_timeout = &ixgb_tx_timeout; |
Auke Kok | 9b8118d | 2006-05-23 10:35:04 -0700 | [diff] [blame] | 409 | netdev->watchdog_timeo = 5 * HZ; |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 410 | netif_napi_add(netdev, &adapter->napi, ixgb_clean, 64); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 411 | netdev->vlan_rx_register = ixgb_vlan_rx_register; |
| 412 | netdev->vlan_rx_add_vid = ixgb_vlan_rx_add_vid; |
| 413 | netdev->vlan_rx_kill_vid = ixgb_vlan_rx_kill_vid; |
| 414 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 415 | netdev->poll_controller = ixgb_netpoll; |
| 416 | #endif |
| 417 | |
Auke Kok | 0eb5a34 | 2006-09-27 12:53:17 -0700 | [diff] [blame] | 418 | strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 419 | |
| 420 | adapter->bd_number = cards_found; |
| 421 | adapter->link_speed = 0; |
| 422 | adapter->link_duplex = 0; |
| 423 | |
| 424 | /* setup the private structure */ |
| 425 | |
Jesse Brandeburg | 9e7bd33 | 2008-07-08 15:52:48 -0700 | [diff] [blame] | 426 | err = ixgb_sw_init(adapter); |
| 427 | if (err) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 428 | goto err_sw_init; |
| 429 | |
| 430 | netdev->features = NETIF_F_SG | |
| 431 | NETIF_F_HW_CSUM | |
| 432 | NETIF_F_HW_VLAN_TX | |
| 433 | NETIF_F_HW_VLAN_RX | |
| 434 | NETIF_F_HW_VLAN_FILTER; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 435 | netdev->features |= NETIF_F_TSO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 436 | |
Jesse Brandeburg | 03f8304 | 2008-07-08 15:52:13 -0700 | [diff] [blame] | 437 | if (pci_using_dac) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 438 | netdev->features |= NETIF_F_HIGHDMA; |
| 439 | |
| 440 | /* make sure the EEPROM is good */ |
| 441 | |
Jesse Brandeburg | 03f8304 | 2008-07-08 15:52:13 -0700 | [diff] [blame] | 442 | if (!ixgb_validate_eeprom_checksum(&adapter->hw)) { |
Auke Kok | ec9c3f5 | 2006-05-23 10:34:59 -0700 | [diff] [blame] | 443 | DPRINTK(PROBE, ERR, "The EEPROM Checksum Is Not Valid\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 444 | err = -EIO; |
| 445 | goto err_eeprom; |
| 446 | } |
| 447 | |
| 448 | ixgb_get_ee_mac_addr(&adapter->hw, netdev->dev_addr); |
John W. Linville | df859c5 | 2005-09-12 10:48:56 -0400 | [diff] [blame] | 449 | memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 450 | |
Jesse Brandeburg | 03f8304 | 2008-07-08 15:52:13 -0700 | [diff] [blame] | 451 | if (!is_valid_ether_addr(netdev->perm_addr)) { |
Auke Kok | ec9c3f5 | 2006-05-23 10:34:59 -0700 | [diff] [blame] | 452 | DPRINTK(PROBE, ERR, "Invalid MAC Address\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 453 | err = -EIO; |
| 454 | goto err_eeprom; |
| 455 | } |
| 456 | |
| 457 | adapter->part_num = ixgb_get_ee_pba_number(&adapter->hw); |
| 458 | |
| 459 | init_timer(&adapter->watchdog_timer); |
| 460 | adapter->watchdog_timer.function = &ixgb_watchdog; |
| 461 | adapter->watchdog_timer.data = (unsigned long)adapter; |
| 462 | |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 463 | INIT_WORK(&adapter->tx_timeout_task, ixgb_tx_timeout_task); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 464 | |
Auke Kok | ec9c3f5 | 2006-05-23 10:34:59 -0700 | [diff] [blame] | 465 | strcpy(netdev->name, "eth%d"); |
Jesse Brandeburg | 9e7bd33 | 2008-07-08 15:52:48 -0700 | [diff] [blame] | 466 | err = register_netdev(netdev); |
| 467 | if (err) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 468 | goto err_register; |
| 469 | |
| 470 | /* we're going to reset, so assume we have no link for now */ |
| 471 | |
| 472 | netif_carrier_off(netdev); |
| 473 | netif_stop_queue(netdev); |
| 474 | |
Auke Kok | ec9c3f5 | 2006-05-23 10:34:59 -0700 | [diff] [blame] | 475 | DPRINTK(PROBE, INFO, "Intel(R) PRO/10GbE Network Connection\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 476 | ixgb_check_options(adapter); |
| 477 | /* reset the hardware with the new settings */ |
| 478 | |
| 479 | ixgb_reset(adapter); |
| 480 | |
| 481 | cards_found++; |
| 482 | return 0; |
| 483 | |
| 484 | err_register: |
| 485 | err_sw_init: |
| 486 | err_eeprom: |
| 487 | iounmap(adapter->hw.hw_addr); |
| 488 | err_ioremap: |
| 489 | free_netdev(netdev); |
| 490 | err_alloc_etherdev: |
| 491 | pci_release_regions(pdev); |
Andreas Schwab | c91e468 | 2006-03-28 18:10:38 +0200 | [diff] [blame] | 492 | err_request_regions: |
| 493 | err_dma_mask: |
| 494 | pci_disable_device(pdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 495 | return err; |
| 496 | } |
| 497 | |
| 498 | /** |
| 499 | * ixgb_remove - Device Removal Routine |
| 500 | * @pdev: PCI device information struct |
| 501 | * |
| 502 | * ixgb_remove is called by the PCI subsystem to alert the driver |
| 503 | * that it should release a PCI device. The could be caused by a |
| 504 | * Hot-Plug event, or because the driver is going to be removed from |
| 505 | * memory. |
| 506 | **/ |
| 507 | |
| 508 | static void __devexit |
| 509 | ixgb_remove(struct pci_dev *pdev) |
| 510 | { |
| 511 | struct net_device *netdev = pci_get_drvdata(pdev); |
Malli Chilakala | 8908c6c | 2005-08-11 13:58:40 -0700 | [diff] [blame] | 512 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 513 | |
Jesse Brandeburg | 1257969 | 2008-07-08 15:51:47 -0700 | [diff] [blame] | 514 | flush_scheduled_work(); |
| 515 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 516 | unregister_netdev(netdev); |
| 517 | |
| 518 | iounmap(adapter->hw.hw_addr); |
| 519 | pci_release_regions(pdev); |
| 520 | |
| 521 | free_netdev(netdev); |
| 522 | } |
| 523 | |
| 524 | /** |
| 525 | * ixgb_sw_init - Initialize general software structures (struct ixgb_adapter) |
| 526 | * @adapter: board private structure to initialize |
| 527 | * |
| 528 | * ixgb_sw_init initializes the Adapter private data structure. |
| 529 | * Fields are initialized based on PCI device information and |
| 530 | * OS network device settings (MTU size). |
| 531 | **/ |
| 532 | |
| 533 | static int __devinit |
| 534 | ixgb_sw_init(struct ixgb_adapter *adapter) |
| 535 | { |
| 536 | struct ixgb_hw *hw = &adapter->hw; |
| 537 | struct net_device *netdev = adapter->netdev; |
| 538 | struct pci_dev *pdev = adapter->pdev; |
| 539 | |
| 540 | /* PCI config space info */ |
| 541 | |
| 542 | hw->vendor_id = pdev->vendor; |
| 543 | hw->device_id = pdev->device; |
| 544 | hw->subsystem_vendor_id = pdev->subsystem_vendor; |
| 545 | hw->subsystem_id = pdev->subsystem_device; |
| 546 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 547 | hw->max_frame_size = netdev->mtu + ENET_HEADER_SIZE + ENET_FCS_LENGTH; |
Jesse Brandeburg | a3dc3da | 2008-07-08 15:51:22 -0700 | [diff] [blame] | 548 | adapter->rx_buffer_len = hw->max_frame_size + 8; /* + 8 for errata */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 549 | |
Jesse Brandeburg | 03f8304 | 2008-07-08 15:52:13 -0700 | [diff] [blame] | 550 | if ((hw->device_id == IXGB_DEVICE_ID_82597EX) |
Auke Kok | 940829e | 2006-05-23 10:29:58 -0700 | [diff] [blame] | 551 | || (hw->device_id == IXGB_DEVICE_ID_82597EX_CX4) |
| 552 | || (hw->device_id == IXGB_DEVICE_ID_82597EX_LR) |
| 553 | || (hw->device_id == IXGB_DEVICE_ID_82597EX_SR)) |
Jesse Brandeburg | 0060c07 | 2008-07-08 15:52:23 -0700 | [diff] [blame] | 554 | hw->mac_type = ixgb_82597; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 555 | else { |
| 556 | /* should never have loaded on this device */ |
Auke Kok | ec9c3f5 | 2006-05-23 10:34:59 -0700 | [diff] [blame] | 557 | DPRINTK(PROBE, ERR, "unsupported device id\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 558 | } |
| 559 | |
| 560 | /* enable flow control to be programmed */ |
| 561 | hw->fc.send_xon = 1; |
| 562 | |
Jesse Brandeburg | bab2bce | 2008-03-21 11:06:32 -0700 | [diff] [blame] | 563 | set_bit(__IXGB_DOWN, &adapter->flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 564 | return 0; |
| 565 | } |
| 566 | |
| 567 | /** |
| 568 | * ixgb_open - Called when a network interface is made active |
| 569 | * @netdev: network interface device structure |
| 570 | * |
| 571 | * Returns 0 on success, negative value on failure |
| 572 | * |
| 573 | * The open entry point is called when a network interface is made |
| 574 | * active by the system (IFF_UP). At this point all resources needed |
| 575 | * for transmit and receive operations are allocated, the interrupt |
| 576 | * handler is registered with the OS, the watchdog timer is started, |
| 577 | * and the stack is notified that the interface is ready. |
| 578 | **/ |
| 579 | |
| 580 | static int |
| 581 | ixgb_open(struct net_device *netdev) |
| 582 | { |
Malli Chilakala | 8908c6c | 2005-08-11 13:58:40 -0700 | [diff] [blame] | 583 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 584 | int err; |
| 585 | |
| 586 | /* allocate transmit descriptors */ |
Jesse Brandeburg | 9e7bd33 | 2008-07-08 15:52:48 -0700 | [diff] [blame] | 587 | err = ixgb_setup_tx_resources(adapter); |
| 588 | if (err) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 589 | goto err_setup_tx; |
| 590 | |
| 591 | /* allocate receive descriptors */ |
| 592 | |
Jesse Brandeburg | 9e7bd33 | 2008-07-08 15:52:48 -0700 | [diff] [blame] | 593 | err = ixgb_setup_rx_resources(adapter); |
| 594 | if (err) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 595 | goto err_setup_rx; |
| 596 | |
Jesse Brandeburg | 9e7bd33 | 2008-07-08 15:52:48 -0700 | [diff] [blame] | 597 | err = ixgb_up(adapter); |
| 598 | if (err) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 599 | goto err_up; |
| 600 | |
| 601 | return 0; |
| 602 | |
| 603 | err_up: |
| 604 | ixgb_free_rx_resources(adapter); |
| 605 | err_setup_rx: |
| 606 | ixgb_free_tx_resources(adapter); |
| 607 | err_setup_tx: |
| 608 | ixgb_reset(adapter); |
| 609 | |
| 610 | return err; |
| 611 | } |
| 612 | |
| 613 | /** |
| 614 | * ixgb_close - Disables a network interface |
| 615 | * @netdev: network interface device structure |
| 616 | * |
| 617 | * Returns 0, this is not allowed to fail |
| 618 | * |
| 619 | * The close entry point is called when an interface is de-activated |
| 620 | * by the OS. The hardware is still under the drivers control, but |
| 621 | * needs to be disabled. A global MAC reset is issued to stop the |
| 622 | * hardware, and all transmit and receive resources are freed. |
| 623 | **/ |
| 624 | |
| 625 | static int |
| 626 | ixgb_close(struct net_device *netdev) |
| 627 | { |
Malli Chilakala | 8908c6c | 2005-08-11 13:58:40 -0700 | [diff] [blame] | 628 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 629 | |
Joe Perches | 446490c | 2008-03-21 11:06:37 -0700 | [diff] [blame] | 630 | ixgb_down(adapter, true); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 631 | |
| 632 | ixgb_free_tx_resources(adapter); |
| 633 | ixgb_free_rx_resources(adapter); |
| 634 | |
| 635 | return 0; |
| 636 | } |
| 637 | |
| 638 | /** |
| 639 | * ixgb_setup_tx_resources - allocate Tx resources (Descriptors) |
| 640 | * @adapter: board private structure |
| 641 | * |
| 642 | * Return 0 on success, negative on failure |
| 643 | **/ |
| 644 | |
| 645 | int |
| 646 | ixgb_setup_tx_resources(struct ixgb_adapter *adapter) |
| 647 | { |
| 648 | struct ixgb_desc_ring *txdr = &adapter->tx_ring; |
| 649 | struct pci_dev *pdev = adapter->pdev; |
| 650 | int size; |
| 651 | |
| 652 | size = sizeof(struct ixgb_buffer) * txdr->count; |
| 653 | txdr->buffer_info = vmalloc(size); |
Jesse Brandeburg | 03f8304 | 2008-07-08 15:52:13 -0700 | [diff] [blame] | 654 | if (!txdr->buffer_info) { |
Auke Kok | ec9c3f5 | 2006-05-23 10:34:59 -0700 | [diff] [blame] | 655 | DPRINTK(PROBE, ERR, |
| 656 | "Unable to allocate transmit descriptor ring memory\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 657 | return -ENOMEM; |
| 658 | } |
| 659 | memset(txdr->buffer_info, 0, size); |
| 660 | |
| 661 | /* round up to nearest 4K */ |
| 662 | |
| 663 | txdr->size = txdr->count * sizeof(struct ixgb_tx_desc); |
Milind Arun Choudhary | 55e924c | 2007-04-27 13:55:31 -0700 | [diff] [blame] | 664 | txdr->size = ALIGN(txdr->size, 4096); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 665 | |
| 666 | txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma); |
Jesse Brandeburg | 03f8304 | 2008-07-08 15:52:13 -0700 | [diff] [blame] | 667 | if (!txdr->desc) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 668 | vfree(txdr->buffer_info); |
Auke Kok | ec9c3f5 | 2006-05-23 10:34:59 -0700 | [diff] [blame] | 669 | DPRINTK(PROBE, ERR, |
| 670 | "Unable to allocate transmit descriptor memory\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 671 | return -ENOMEM; |
| 672 | } |
| 673 | memset(txdr->desc, 0, txdr->size); |
| 674 | |
| 675 | txdr->next_to_use = 0; |
| 676 | txdr->next_to_clean = 0; |
| 677 | |
| 678 | return 0; |
| 679 | } |
| 680 | |
| 681 | /** |
| 682 | * ixgb_configure_tx - Configure 82597 Transmit Unit after Reset. |
| 683 | * @adapter: board private structure |
| 684 | * |
| 685 | * Configure the Tx unit of the MAC after a reset. |
| 686 | **/ |
| 687 | |
| 688 | static void |
| 689 | ixgb_configure_tx(struct ixgb_adapter *adapter) |
| 690 | { |
Joe Perches | 222441a | 2008-04-03 10:06:25 -0700 | [diff] [blame] | 691 | u64 tdba = adapter->tx_ring.dma; |
| 692 | u32 tdlen = adapter->tx_ring.count * sizeof(struct ixgb_tx_desc); |
| 693 | u32 tctl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 694 | struct ixgb_hw *hw = &adapter->hw; |
| 695 | |
Jesse Brandeburg | 0060c07 | 2008-07-08 15:52:23 -0700 | [diff] [blame] | 696 | /* Setup the Base and Length of the Tx Descriptor Ring |
| 697 | * tx_ring.dma can be either a 32 or 64 bit value |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 698 | */ |
| 699 | |
| 700 | IXGB_WRITE_REG(hw, TDBAL, (tdba & 0x00000000ffffffffULL)); |
| 701 | IXGB_WRITE_REG(hw, TDBAH, (tdba >> 32)); |
| 702 | |
| 703 | IXGB_WRITE_REG(hw, TDLEN, tdlen); |
| 704 | |
| 705 | /* Setup the HW Tx Head and Tail descriptor pointers */ |
| 706 | |
| 707 | IXGB_WRITE_REG(hw, TDH, 0); |
| 708 | IXGB_WRITE_REG(hw, TDT, 0); |
| 709 | |
| 710 | /* don't set up txdctl, it induces performance problems if configured |
| 711 | * incorrectly */ |
| 712 | /* Set the Tx Interrupt Delay register */ |
| 713 | |
| 714 | IXGB_WRITE_REG(hw, TIDV, adapter->tx_int_delay); |
| 715 | |
| 716 | /* Program the Transmit Control Register */ |
| 717 | |
| 718 | tctl = IXGB_TCTL_TCE | IXGB_TCTL_TXEN | IXGB_TCTL_TPDE; |
| 719 | IXGB_WRITE_REG(hw, TCTL, tctl); |
| 720 | |
| 721 | /* Setup Transmit Descriptor Settings for this adapter */ |
| 722 | adapter->tx_cmd_type = |
Jesse Brandeburg | 0060c07 | 2008-07-08 15:52:23 -0700 | [diff] [blame] | 723 | IXGB_TX_DESC_TYPE | |
| 724 | (adapter->tx_int_delay_enable ? IXGB_TX_DESC_CMD_IDE : 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 725 | } |
| 726 | |
| 727 | /** |
| 728 | * ixgb_setup_rx_resources - allocate Rx resources (Descriptors) |
| 729 | * @adapter: board private structure |
| 730 | * |
| 731 | * Returns 0 on success, negative on failure |
| 732 | **/ |
| 733 | |
| 734 | int |
| 735 | ixgb_setup_rx_resources(struct ixgb_adapter *adapter) |
| 736 | { |
| 737 | struct ixgb_desc_ring *rxdr = &adapter->rx_ring; |
| 738 | struct pci_dev *pdev = adapter->pdev; |
| 739 | int size; |
| 740 | |
| 741 | size = sizeof(struct ixgb_buffer) * rxdr->count; |
| 742 | rxdr->buffer_info = vmalloc(size); |
Jesse Brandeburg | 03f8304 | 2008-07-08 15:52:13 -0700 | [diff] [blame] | 743 | if (!rxdr->buffer_info) { |
Auke Kok | ec9c3f5 | 2006-05-23 10:34:59 -0700 | [diff] [blame] | 744 | DPRINTK(PROBE, ERR, |
| 745 | "Unable to allocate receive descriptor ring\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 746 | return -ENOMEM; |
| 747 | } |
| 748 | memset(rxdr->buffer_info, 0, size); |
| 749 | |
| 750 | /* Round up to nearest 4K */ |
| 751 | |
| 752 | rxdr->size = rxdr->count * sizeof(struct ixgb_rx_desc); |
Milind Arun Choudhary | 55e924c | 2007-04-27 13:55:31 -0700 | [diff] [blame] | 753 | rxdr->size = ALIGN(rxdr->size, 4096); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 754 | |
| 755 | rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma); |
| 756 | |
Jesse Brandeburg | 03f8304 | 2008-07-08 15:52:13 -0700 | [diff] [blame] | 757 | if (!rxdr->desc) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 758 | vfree(rxdr->buffer_info); |
Auke Kok | ec9c3f5 | 2006-05-23 10:34:59 -0700 | [diff] [blame] | 759 | DPRINTK(PROBE, ERR, |
| 760 | "Unable to allocate receive descriptors\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 761 | return -ENOMEM; |
| 762 | } |
| 763 | memset(rxdr->desc, 0, rxdr->size); |
| 764 | |
| 765 | rxdr->next_to_clean = 0; |
| 766 | rxdr->next_to_use = 0; |
| 767 | |
| 768 | return 0; |
| 769 | } |
| 770 | |
| 771 | /** |
| 772 | * ixgb_setup_rctl - configure the receive control register |
| 773 | * @adapter: Board private structure |
| 774 | **/ |
| 775 | |
| 776 | static void |
| 777 | ixgb_setup_rctl(struct ixgb_adapter *adapter) |
| 778 | { |
Joe Perches | 222441a | 2008-04-03 10:06:25 -0700 | [diff] [blame] | 779 | u32 rctl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 780 | |
| 781 | rctl = IXGB_READ_REG(&adapter->hw, RCTL); |
| 782 | |
| 783 | rctl &= ~(3 << IXGB_RCTL_MO_SHIFT); |
| 784 | |
| 785 | rctl |= |
Jesse Brandeburg | 0060c07 | 2008-07-08 15:52:23 -0700 | [diff] [blame] | 786 | IXGB_RCTL_BAM | IXGB_RCTL_RDMTS_1_2 | |
| 787 | IXGB_RCTL_RXEN | IXGB_RCTL_CFF | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 788 | (adapter->hw.mc_filter_type << IXGB_RCTL_MO_SHIFT); |
| 789 | |
| 790 | rctl |= IXGB_RCTL_SECRC; |
| 791 | |
Auke Kok | 3f3dc0d | 2006-05-26 09:35:43 -0700 | [diff] [blame] | 792 | if (adapter->rx_buffer_len <= IXGB_RXBUFFER_2048) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 793 | rctl |= IXGB_RCTL_BSIZE_2048; |
Auke Kok | 3f3dc0d | 2006-05-26 09:35:43 -0700 | [diff] [blame] | 794 | else if (adapter->rx_buffer_len <= IXGB_RXBUFFER_4096) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 795 | rctl |= IXGB_RCTL_BSIZE_4096; |
Auke Kok | 3f3dc0d | 2006-05-26 09:35:43 -0700 | [diff] [blame] | 796 | else if (adapter->rx_buffer_len <= IXGB_RXBUFFER_8192) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 797 | rctl |= IXGB_RCTL_BSIZE_8192; |
Auke Kok | 3f3dc0d | 2006-05-26 09:35:43 -0700 | [diff] [blame] | 798 | else if (adapter->rx_buffer_len <= IXGB_RXBUFFER_16384) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 799 | rctl |= IXGB_RCTL_BSIZE_16384; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 800 | |
| 801 | IXGB_WRITE_REG(&adapter->hw, RCTL, rctl); |
| 802 | } |
| 803 | |
| 804 | /** |
| 805 | * ixgb_configure_rx - Configure 82597 Receive Unit after Reset. |
| 806 | * @adapter: board private structure |
| 807 | * |
| 808 | * Configure the Rx unit of the MAC after a reset. |
| 809 | **/ |
| 810 | |
| 811 | static void |
| 812 | ixgb_configure_rx(struct ixgb_adapter *adapter) |
| 813 | { |
Joe Perches | 222441a | 2008-04-03 10:06:25 -0700 | [diff] [blame] | 814 | u64 rdba = adapter->rx_ring.dma; |
| 815 | u32 rdlen = adapter->rx_ring.count * sizeof(struct ixgb_rx_desc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 816 | struct ixgb_hw *hw = &adapter->hw; |
Joe Perches | 222441a | 2008-04-03 10:06:25 -0700 | [diff] [blame] | 817 | u32 rctl; |
| 818 | u32 rxcsum; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 819 | |
| 820 | /* make sure receives are disabled while setting up the descriptors */ |
| 821 | |
| 822 | rctl = IXGB_READ_REG(hw, RCTL); |
| 823 | IXGB_WRITE_REG(hw, RCTL, rctl & ~IXGB_RCTL_RXEN); |
| 824 | |
| 825 | /* set the Receive Delay Timer Register */ |
| 826 | |
| 827 | IXGB_WRITE_REG(hw, RDTR, adapter->rx_int_delay); |
| 828 | |
| 829 | /* Setup the Base and Length of the Rx Descriptor Ring */ |
| 830 | |
| 831 | IXGB_WRITE_REG(hw, RDBAL, (rdba & 0x00000000ffffffffULL)); |
| 832 | IXGB_WRITE_REG(hw, RDBAH, (rdba >> 32)); |
| 833 | |
| 834 | IXGB_WRITE_REG(hw, RDLEN, rdlen); |
| 835 | |
| 836 | /* Setup the HW Rx Head and Tail Descriptor Pointers */ |
| 837 | IXGB_WRITE_REG(hw, RDH, 0); |
| 838 | IXGB_WRITE_REG(hw, RDT, 0); |
| 839 | |
Jesse Brandeburg | 4360386 | 2008-07-08 15:51:17 -0700 | [diff] [blame] | 840 | /* due to the hardware errata with RXDCTL, we are unable to use any of |
| 841 | * the performance enhancing features of it without causing other |
| 842 | * subtle bugs, some of the bugs could include receive length |
| 843 | * corruption at high data rates (WTHRESH > 0) and/or receive |
| 844 | * descriptor ring irregularites (particularly in hardware cache) */ |
| 845 | IXGB_WRITE_REG(hw, RXDCTL, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 846 | |
| 847 | /* Enable Receive Checksum Offload for TCP and UDP */ |
Joe Perches | 446490c | 2008-03-21 11:06:37 -0700 | [diff] [blame] | 848 | if (adapter->rx_csum) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 849 | rxcsum = IXGB_READ_REG(hw, RXCSUM); |
| 850 | rxcsum |= IXGB_RXCSUM_TUOFL; |
| 851 | IXGB_WRITE_REG(hw, RXCSUM, rxcsum); |
| 852 | } |
| 853 | |
| 854 | /* Enable Receives */ |
| 855 | |
| 856 | IXGB_WRITE_REG(hw, RCTL, rctl); |
| 857 | } |
| 858 | |
| 859 | /** |
| 860 | * ixgb_free_tx_resources - Free Tx Resources |
| 861 | * @adapter: board private structure |
| 862 | * |
| 863 | * Free all transmit software resources |
| 864 | **/ |
| 865 | |
| 866 | void |
| 867 | ixgb_free_tx_resources(struct ixgb_adapter *adapter) |
| 868 | { |
| 869 | struct pci_dev *pdev = adapter->pdev; |
| 870 | |
| 871 | ixgb_clean_tx_ring(adapter); |
| 872 | |
| 873 | vfree(adapter->tx_ring.buffer_info); |
| 874 | adapter->tx_ring.buffer_info = NULL; |
| 875 | |
| 876 | pci_free_consistent(pdev, adapter->tx_ring.size, |
| 877 | adapter->tx_ring.desc, adapter->tx_ring.dma); |
| 878 | |
| 879 | adapter->tx_ring.desc = NULL; |
| 880 | } |
| 881 | |
Auke Kok | 235949d1 | 2006-05-26 09:35:52 -0700 | [diff] [blame] | 882 | static void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 883 | ixgb_unmap_and_free_tx_resource(struct ixgb_adapter *adapter, |
Jesse Brandeburg | 0060c07 | 2008-07-08 15:52:23 -0700 | [diff] [blame] | 884 | struct ixgb_buffer *buffer_info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 885 | { |
| 886 | struct pci_dev *pdev = adapter->pdev; |
Auke Kok | 1dfdd7d | 2006-05-25 13:24:17 -0700 | [diff] [blame] | 887 | |
| 888 | if (buffer_info->dma) |
| 889 | pci_unmap_page(pdev, buffer_info->dma, buffer_info->length, |
| 890 | PCI_DMA_TODEVICE); |
| 891 | |
Jesse Brandeburg | c219934 | 2008-07-08 15:52:53 -0700 | [diff] [blame] | 892 | /* okay to call kfree_skb here instead of kfree_skb_any because |
| 893 | * this is never called in interrupt context */ |
Auke Kok | 1dfdd7d | 2006-05-25 13:24:17 -0700 | [diff] [blame] | 894 | if (buffer_info->skb) |
Jesse Brandeburg | c219934 | 2008-07-08 15:52:53 -0700 | [diff] [blame] | 895 | dev_kfree_skb(buffer_info->skb); |
Auke Kok | 1dfdd7d | 2006-05-25 13:24:17 -0700 | [diff] [blame] | 896 | |
| 897 | buffer_info->skb = NULL; |
| 898 | buffer_info->dma = 0; |
| 899 | buffer_info->time_stamp = 0; |
| 900 | /* these fields must always be initialized in tx |
| 901 | * buffer_info->length = 0; |
| 902 | * buffer_info->next_to_watch = 0; */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 903 | } |
| 904 | |
| 905 | /** |
| 906 | * ixgb_clean_tx_ring - Free Tx Buffers |
| 907 | * @adapter: board private structure |
| 908 | **/ |
| 909 | |
| 910 | static void |
| 911 | ixgb_clean_tx_ring(struct ixgb_adapter *adapter) |
| 912 | { |
| 913 | struct ixgb_desc_ring *tx_ring = &adapter->tx_ring; |
| 914 | struct ixgb_buffer *buffer_info; |
| 915 | unsigned long size; |
| 916 | unsigned int i; |
| 917 | |
| 918 | /* Free all the Tx ring sk_buffs */ |
| 919 | |
Jesse Brandeburg | 1459336 | 2008-07-08 15:52:33 -0700 | [diff] [blame] | 920 | for (i = 0; i < tx_ring->count; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 921 | buffer_info = &tx_ring->buffer_info[i]; |
| 922 | ixgb_unmap_and_free_tx_resource(adapter, buffer_info); |
| 923 | } |
| 924 | |
| 925 | size = sizeof(struct ixgb_buffer) * tx_ring->count; |
| 926 | memset(tx_ring->buffer_info, 0, size); |
| 927 | |
| 928 | /* Zero out the descriptor ring */ |
| 929 | |
| 930 | memset(tx_ring->desc, 0, tx_ring->size); |
| 931 | |
| 932 | tx_ring->next_to_use = 0; |
| 933 | tx_ring->next_to_clean = 0; |
| 934 | |
| 935 | IXGB_WRITE_REG(&adapter->hw, TDH, 0); |
| 936 | IXGB_WRITE_REG(&adapter->hw, TDT, 0); |
| 937 | } |
| 938 | |
| 939 | /** |
| 940 | * ixgb_free_rx_resources - Free Rx Resources |
| 941 | * @adapter: board private structure |
| 942 | * |
| 943 | * Free all receive software resources |
| 944 | **/ |
| 945 | |
| 946 | void |
| 947 | ixgb_free_rx_resources(struct ixgb_adapter *adapter) |
| 948 | { |
| 949 | struct ixgb_desc_ring *rx_ring = &adapter->rx_ring; |
| 950 | struct pci_dev *pdev = adapter->pdev; |
| 951 | |
| 952 | ixgb_clean_rx_ring(adapter); |
| 953 | |
| 954 | vfree(rx_ring->buffer_info); |
| 955 | rx_ring->buffer_info = NULL; |
| 956 | |
| 957 | pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma); |
| 958 | |
| 959 | rx_ring->desc = NULL; |
| 960 | } |
| 961 | |
| 962 | /** |
| 963 | * ixgb_clean_rx_ring - Free Rx Buffers |
| 964 | * @adapter: board private structure |
| 965 | **/ |
| 966 | |
| 967 | static void |
| 968 | ixgb_clean_rx_ring(struct ixgb_adapter *adapter) |
| 969 | { |
| 970 | struct ixgb_desc_ring *rx_ring = &adapter->rx_ring; |
| 971 | struct ixgb_buffer *buffer_info; |
| 972 | struct pci_dev *pdev = adapter->pdev; |
| 973 | unsigned long size; |
| 974 | unsigned int i; |
| 975 | |
| 976 | /* Free all the Rx ring sk_buffs */ |
| 977 | |
Jesse Brandeburg | 1459336 | 2008-07-08 15:52:33 -0700 | [diff] [blame] | 978 | for (i = 0; i < rx_ring->count; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 979 | buffer_info = &rx_ring->buffer_info[i]; |
Brandeburg, Jesse | 23e55a3 | 2008-09-30 13:08:48 +0000 | [diff] [blame] | 980 | if (buffer_info->dma) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 981 | pci_unmap_single(pdev, |
| 982 | buffer_info->dma, |
| 983 | buffer_info->length, |
| 984 | PCI_DMA_FROMDEVICE); |
Brandeburg, Jesse | 23e55a3 | 2008-09-30 13:08:48 +0000 | [diff] [blame] | 985 | buffer_info->dma = 0; |
| 986 | buffer_info->length = 0; |
| 987 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 988 | |
Brandeburg, Jesse | 23e55a3 | 2008-09-30 13:08:48 +0000 | [diff] [blame] | 989 | if (buffer_info->skb) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 990 | dev_kfree_skb(buffer_info->skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 991 | buffer_info->skb = NULL; |
| 992 | } |
| 993 | } |
| 994 | |
| 995 | size = sizeof(struct ixgb_buffer) * rx_ring->count; |
| 996 | memset(rx_ring->buffer_info, 0, size); |
| 997 | |
| 998 | /* Zero out the descriptor ring */ |
| 999 | |
| 1000 | memset(rx_ring->desc, 0, rx_ring->size); |
| 1001 | |
| 1002 | rx_ring->next_to_clean = 0; |
| 1003 | rx_ring->next_to_use = 0; |
| 1004 | |
| 1005 | IXGB_WRITE_REG(&adapter->hw, RDH, 0); |
| 1006 | IXGB_WRITE_REG(&adapter->hw, RDT, 0); |
| 1007 | } |
| 1008 | |
| 1009 | /** |
| 1010 | * ixgb_set_mac - Change the Ethernet Address of the NIC |
| 1011 | * @netdev: network interface device structure |
| 1012 | * @p: pointer to an address structure |
| 1013 | * |
| 1014 | * Returns 0 on success, negative on failure |
| 1015 | **/ |
| 1016 | |
| 1017 | static int |
| 1018 | ixgb_set_mac(struct net_device *netdev, void *p) |
| 1019 | { |
Malli Chilakala | 8908c6c | 2005-08-11 13:58:40 -0700 | [diff] [blame] | 1020 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1021 | struct sockaddr *addr = p; |
| 1022 | |
Jesse Brandeburg | 03f8304 | 2008-07-08 15:52:13 -0700 | [diff] [blame] | 1023 | if (!is_valid_ether_addr(addr->sa_data)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1024 | return -EADDRNOTAVAIL; |
| 1025 | |
| 1026 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); |
| 1027 | |
| 1028 | ixgb_rar_set(&adapter->hw, addr->sa_data, 0); |
| 1029 | |
| 1030 | return 0; |
| 1031 | } |
| 1032 | |
| 1033 | /** |
| 1034 | * ixgb_set_multi - Multicast and Promiscuous mode set |
| 1035 | * @netdev: network interface device structure |
| 1036 | * |
| 1037 | * The set_multi entry point is called whenever the multicast address |
| 1038 | * list or the network interface flags are updated. This routine is |
| 1039 | * responsible for configuring the hardware for proper multicast, |
| 1040 | * promiscuous mode, and all-multi behavior. |
| 1041 | **/ |
| 1042 | |
| 1043 | static void |
| 1044 | ixgb_set_multi(struct net_device *netdev) |
| 1045 | { |
Malli Chilakala | 8908c6c | 2005-08-11 13:58:40 -0700 | [diff] [blame] | 1046 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1047 | struct ixgb_hw *hw = &adapter->hw; |
| 1048 | struct dev_mc_list *mc_ptr; |
Joe Perches | 222441a | 2008-04-03 10:06:25 -0700 | [diff] [blame] | 1049 | u32 rctl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1050 | int i; |
| 1051 | |
| 1052 | /* Check for Promiscuous and All Multicast modes */ |
| 1053 | |
| 1054 | rctl = IXGB_READ_REG(hw, RCTL); |
| 1055 | |
Jesse Brandeburg | 03f8304 | 2008-07-08 15:52:13 -0700 | [diff] [blame] | 1056 | if (netdev->flags & IFF_PROMISC) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1057 | rctl |= (IXGB_RCTL_UPE | IXGB_RCTL_MPE); |
Patrick McHardy | 746b9f0 | 2008-07-16 20:15:45 -0700 | [diff] [blame] | 1058 | rctl &= ~IXGB_RCTL_VFE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1059 | } else { |
Patrick McHardy | 746b9f0 | 2008-07-16 20:15:45 -0700 | [diff] [blame] | 1060 | if (netdev->flags & IFF_ALLMULTI) { |
| 1061 | rctl |= IXGB_RCTL_MPE; |
| 1062 | rctl &= ~IXGB_RCTL_UPE; |
| 1063 | } else { |
| 1064 | rctl &= ~(IXGB_RCTL_UPE | IXGB_RCTL_MPE); |
| 1065 | } |
Patrick McHardy | 78ed11a | 2008-07-16 20:16:14 -0700 | [diff] [blame] | 1066 | rctl |= IXGB_RCTL_VFE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1067 | } |
| 1068 | |
Jesse Brandeburg | 03f8304 | 2008-07-08 15:52:13 -0700 | [diff] [blame] | 1069 | if (netdev->mc_count > IXGB_MAX_NUM_MULTICAST_ADDRESSES) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1070 | rctl |= IXGB_RCTL_MPE; |
| 1071 | IXGB_WRITE_REG(hw, RCTL, rctl); |
| 1072 | } else { |
Joe Perches | 222441a | 2008-04-03 10:06:25 -0700 | [diff] [blame] | 1073 | u8 mta[IXGB_MAX_NUM_MULTICAST_ADDRESSES * |
Stephen Hemminger | 273dc74 | 2007-10-29 10:46:13 -0700 | [diff] [blame] | 1074 | IXGB_ETH_LENGTH_OF_ADDRESS]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1075 | |
| 1076 | IXGB_WRITE_REG(hw, RCTL, rctl); |
| 1077 | |
Jesse Brandeburg | 0060c07 | 2008-07-08 15:52:23 -0700 | [diff] [blame] | 1078 | for (i = 0, mc_ptr = netdev->mc_list; |
| 1079 | mc_ptr; |
| 1080 | i++, mc_ptr = mc_ptr->next) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1081 | memcpy(&mta[i * IXGB_ETH_LENGTH_OF_ADDRESS], |
Jesse Brandeburg | 0060c07 | 2008-07-08 15:52:23 -0700 | [diff] [blame] | 1082 | mc_ptr->dmi_addr, IXGB_ETH_LENGTH_OF_ADDRESS); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1083 | |
| 1084 | ixgb_mc_addr_list_update(hw, mta, netdev->mc_count, 0); |
| 1085 | } |
| 1086 | } |
| 1087 | |
| 1088 | /** |
| 1089 | * ixgb_watchdog - Timer Call-back |
| 1090 | * @data: pointer to netdev cast into an unsigned long |
| 1091 | **/ |
| 1092 | |
| 1093 | static void |
| 1094 | ixgb_watchdog(unsigned long data) |
| 1095 | { |
| 1096 | struct ixgb_adapter *adapter = (struct ixgb_adapter *)data; |
| 1097 | struct net_device *netdev = adapter->netdev; |
| 1098 | struct ixgb_desc_ring *txdr = &adapter->tx_ring; |
| 1099 | |
| 1100 | ixgb_check_for_link(&adapter->hw); |
| 1101 | |
| 1102 | if (ixgb_check_for_bad_link(&adapter->hw)) { |
| 1103 | /* force the reset path */ |
| 1104 | netif_stop_queue(netdev); |
| 1105 | } |
| 1106 | |
Jesse Brandeburg | 03f8304 | 2008-07-08 15:52:13 -0700 | [diff] [blame] | 1107 | if (adapter->hw.link_up) { |
| 1108 | if (!netif_carrier_ok(netdev)) { |
Auke Kok | ec9c3f5 | 2006-05-23 10:34:59 -0700 | [diff] [blame] | 1109 | DPRINTK(LINK, INFO, |
| 1110 | "NIC Link is Up 10000 Mbps Full Duplex\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1111 | adapter->link_speed = 10000; |
| 1112 | adapter->link_duplex = FULL_DUPLEX; |
| 1113 | netif_carrier_on(netdev); |
| 1114 | netif_wake_queue(netdev); |
| 1115 | } |
| 1116 | } else { |
Jesse Brandeburg | 03f8304 | 2008-07-08 15:52:13 -0700 | [diff] [blame] | 1117 | if (netif_carrier_ok(netdev)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1118 | adapter->link_speed = 0; |
| 1119 | adapter->link_duplex = 0; |
Auke Kok | ec9c3f5 | 2006-05-23 10:34:59 -0700 | [diff] [blame] | 1120 | DPRINTK(LINK, INFO, "NIC Link is Down\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1121 | netif_carrier_off(netdev); |
| 1122 | netif_stop_queue(netdev); |
| 1123 | |
| 1124 | } |
| 1125 | } |
| 1126 | |
| 1127 | ixgb_update_stats(adapter); |
| 1128 | |
Jesse Brandeburg | 03f8304 | 2008-07-08 15:52:13 -0700 | [diff] [blame] | 1129 | if (!netif_carrier_ok(netdev)) { |
| 1130 | if (IXGB_DESC_UNUSED(txdr) + 1 < txdr->count) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1131 | /* We've lost link, so the controller stops DMA, |
| 1132 | * but we've got queued Tx work that's never going |
| 1133 | * to get done, so reset controller to flush Tx. |
| 1134 | * (Do the reset outside of interrupt context). */ |
| 1135 | schedule_work(&adapter->tx_timeout_task); |
| 1136 | } |
| 1137 | } |
| 1138 | |
| 1139 | /* Force detection of hung controller every watchdog period */ |
Joe Perches | 446490c | 2008-03-21 11:06:37 -0700 | [diff] [blame] | 1140 | adapter->detect_tx_hung = true; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1141 | |
| 1142 | /* generate an interrupt to force clean up of any stragglers */ |
| 1143 | IXGB_WRITE_REG(&adapter->hw, ICS, IXGB_INT_TXDW); |
| 1144 | |
| 1145 | /* Reset the timer */ |
| 1146 | mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ); |
| 1147 | } |
| 1148 | |
| 1149 | #define IXGB_TX_FLAGS_CSUM 0x00000001 |
| 1150 | #define IXGB_TX_FLAGS_VLAN 0x00000002 |
| 1151 | #define IXGB_TX_FLAGS_TSO 0x00000004 |
| 1152 | |
Auke Kok | 235949d1 | 2006-05-26 09:35:52 -0700 | [diff] [blame] | 1153 | static int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1154 | ixgb_tso(struct ixgb_adapter *adapter, struct sk_buff *skb) |
| 1155 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1156 | struct ixgb_context_desc *context_desc; |
| 1157 | unsigned int i; |
Joe Perches | 222441a | 2008-04-03 10:06:25 -0700 | [diff] [blame] | 1158 | u8 ipcss, ipcso, tucss, tucso, hdr_len; |
| 1159 | u16 ipcse, tucse, mss; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1160 | int err; |
| 1161 | |
Herbert Xu | 89114af | 2006-07-08 13:34:32 -0700 | [diff] [blame] | 1162 | if (likely(skb_is_gso(skb))) { |
Jesse Brandeburg | adc5413 | 2006-08-31 14:27:51 -0700 | [diff] [blame] | 1163 | struct ixgb_buffer *buffer_info; |
Arnaldo Carvalho de Melo | eddc9ec | 2007-04-20 22:47:35 -0700 | [diff] [blame] | 1164 | struct iphdr *iph; |
| 1165 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1166 | if (skb_header_cloned(skb)) { |
| 1167 | err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); |
| 1168 | if (err) |
| 1169 | return err; |
| 1170 | } |
| 1171 | |
Arnaldo Carvalho de Melo | ab6a5bb | 2007-03-18 17:43:48 -0700 | [diff] [blame] | 1172 | hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
Herbert Xu | 7967168 | 2006-06-22 02:40:14 -0700 | [diff] [blame] | 1173 | mss = skb_shinfo(skb)->gso_size; |
Arnaldo Carvalho de Melo | eddc9ec | 2007-04-20 22:47:35 -0700 | [diff] [blame] | 1174 | iph = ip_hdr(skb); |
| 1175 | iph->tot_len = 0; |
| 1176 | iph->check = 0; |
Arnaldo Carvalho de Melo | aa8223c | 2007-04-10 21:04:22 -0700 | [diff] [blame] | 1177 | tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, |
| 1178 | iph->daddr, 0, |
| 1179 | IPPROTO_TCP, 0); |
Arnaldo Carvalho de Melo | bbe735e | 2007-03-10 22:16:10 -0300 | [diff] [blame] | 1180 | ipcss = skb_network_offset(skb); |
Arnaldo Carvalho de Melo | eddc9ec | 2007-04-20 22:47:35 -0700 | [diff] [blame] | 1181 | ipcso = (void *)&(iph->check) - (void *)skb->data; |
Arnaldo Carvalho de Melo | ea2ae17 | 2007-04-25 17:55:53 -0700 | [diff] [blame] | 1182 | ipcse = skb_transport_offset(skb) - 1; |
| 1183 | tucss = skb_transport_offset(skb); |
Arnaldo Carvalho de Melo | aa8223c | 2007-04-10 21:04:22 -0700 | [diff] [blame] | 1184 | tucso = (void *)&(tcp_hdr(skb)->check) - (void *)skb->data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1185 | tucse = 0; |
| 1186 | |
| 1187 | i = adapter->tx_ring.next_to_use; |
| 1188 | context_desc = IXGB_CONTEXT_DESC(adapter->tx_ring, i); |
Jesse Brandeburg | adc5413 | 2006-08-31 14:27:51 -0700 | [diff] [blame] | 1189 | buffer_info = &adapter->tx_ring.buffer_info[i]; |
| 1190 | WARN_ON(buffer_info->dma != 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1191 | |
| 1192 | context_desc->ipcss = ipcss; |
| 1193 | context_desc->ipcso = ipcso; |
| 1194 | context_desc->ipcse = cpu_to_le16(ipcse); |
| 1195 | context_desc->tucss = tucss; |
| 1196 | context_desc->tucso = tucso; |
| 1197 | context_desc->tucse = cpu_to_le16(tucse); |
| 1198 | context_desc->mss = cpu_to_le16(mss); |
| 1199 | context_desc->hdr_len = hdr_len; |
| 1200 | context_desc->status = 0; |
| 1201 | context_desc->cmd_type_len = cpu_to_le32( |
Jesse Brandeburg | 0060c07 | 2008-07-08 15:52:23 -0700 | [diff] [blame] | 1202 | IXGB_CONTEXT_DESC_TYPE |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1203 | | IXGB_CONTEXT_DESC_CMD_TSE |
| 1204 | | IXGB_CONTEXT_DESC_CMD_IP |
| 1205 | | IXGB_CONTEXT_DESC_CMD_TCP |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1206 | | IXGB_CONTEXT_DESC_CMD_IDE |
| 1207 | | (skb->len - (hdr_len))); |
| 1208 | |
Malli Chilakala | 06c2f9e | 2005-04-28 18:46:51 -0700 | [diff] [blame] | 1209 | |
Jesse Brandeburg | 03f8304 | 2008-07-08 15:52:13 -0700 | [diff] [blame] | 1210 | if (++i == adapter->tx_ring.count) i = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1211 | adapter->tx_ring.next_to_use = i; |
| 1212 | |
| 1213 | return 1; |
| 1214 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1215 | |
| 1216 | return 0; |
| 1217 | } |
| 1218 | |
Joe Perches | 446490c | 2008-03-21 11:06:37 -0700 | [diff] [blame] | 1219 | static bool |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1220 | ixgb_tx_csum(struct ixgb_adapter *adapter, struct sk_buff *skb) |
| 1221 | { |
| 1222 | struct ixgb_context_desc *context_desc; |
| 1223 | unsigned int i; |
Joe Perches | 222441a | 2008-04-03 10:06:25 -0700 | [diff] [blame] | 1224 | u8 css, cso; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1225 | |
Jesse Brandeburg | 03f8304 | 2008-07-08 15:52:13 -0700 | [diff] [blame] | 1226 | if (likely(skb->ip_summed == CHECKSUM_PARTIAL)) { |
Jesse Brandeburg | adc5413 | 2006-08-31 14:27:51 -0700 | [diff] [blame] | 1227 | struct ixgb_buffer *buffer_info; |
Arnaldo Carvalho de Melo | ea2ae17 | 2007-04-25 17:55:53 -0700 | [diff] [blame] | 1228 | css = skb_transport_offset(skb); |
Al Viro | ff1dcad | 2006-11-20 18:07:29 -0800 | [diff] [blame] | 1229 | cso = css + skb->csum_offset; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1230 | |
| 1231 | i = adapter->tx_ring.next_to_use; |
| 1232 | context_desc = IXGB_CONTEXT_DESC(adapter->tx_ring, i); |
Jesse Brandeburg | adc5413 | 2006-08-31 14:27:51 -0700 | [diff] [blame] | 1233 | buffer_info = &adapter->tx_ring.buffer_info[i]; |
| 1234 | WARN_ON(buffer_info->dma != 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1235 | |
| 1236 | context_desc->tucss = css; |
| 1237 | context_desc->tucso = cso; |
| 1238 | context_desc->tucse = 0; |
| 1239 | /* zero out any previously existing data in one instruction */ |
Joe Perches | 222441a | 2008-04-03 10:06:25 -0700 | [diff] [blame] | 1240 | *(u32 *)&(context_desc->ipcss) = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1241 | context_desc->status = 0; |
| 1242 | context_desc->hdr_len = 0; |
| 1243 | context_desc->mss = 0; |
| 1244 | context_desc->cmd_type_len = |
| 1245 | cpu_to_le32(IXGB_CONTEXT_DESC_TYPE |
Malli Chilakala | 06c2f9e | 2005-04-28 18:46:51 -0700 | [diff] [blame] | 1246 | | IXGB_TX_DESC_CMD_IDE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1247 | |
Jesse Brandeburg | 03f8304 | 2008-07-08 15:52:13 -0700 | [diff] [blame] | 1248 | if (++i == adapter->tx_ring.count) i = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1249 | adapter->tx_ring.next_to_use = i; |
| 1250 | |
Joe Perches | 446490c | 2008-03-21 11:06:37 -0700 | [diff] [blame] | 1251 | return true; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1252 | } |
| 1253 | |
Joe Perches | 446490c | 2008-03-21 11:06:37 -0700 | [diff] [blame] | 1254 | return false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1255 | } |
| 1256 | |
| 1257 | #define IXGB_MAX_TXD_PWR 14 |
| 1258 | #define IXGB_MAX_DATA_PER_TXD (1<<IXGB_MAX_TXD_PWR) |
| 1259 | |
Auke Kok | 235949d1 | 2006-05-26 09:35:52 -0700 | [diff] [blame] | 1260 | static int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1261 | ixgb_tx_map(struct ixgb_adapter *adapter, struct sk_buff *skb, |
| 1262 | unsigned int first) |
| 1263 | { |
| 1264 | struct ixgb_desc_ring *tx_ring = &adapter->tx_ring; |
| 1265 | struct ixgb_buffer *buffer_info; |
| 1266 | int len = skb->len; |
| 1267 | unsigned int offset = 0, size, count = 0, i; |
Jesse Brandeburg | 5d92785 | 2007-01-06 09:51:23 -0800 | [diff] [blame] | 1268 | unsigned int mss = skb_shinfo(skb)->gso_size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1269 | |
| 1270 | unsigned int nr_frags = skb_shinfo(skb)->nr_frags; |
| 1271 | unsigned int f; |
Malli Chilakala | ac79c82 | 2005-04-28 19:05:32 -0700 | [diff] [blame] | 1272 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1273 | len -= skb->data_len; |
| 1274 | |
| 1275 | i = tx_ring->next_to_use; |
| 1276 | |
Jesse Brandeburg | 9a43299 | 2008-07-08 15:52:18 -0700 | [diff] [blame] | 1277 | while (len) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1278 | buffer_info = &tx_ring->buffer_info[i]; |
Auke Kok | 709cf01 | 2006-07-10 08:51:43 -0700 | [diff] [blame] | 1279 | size = min(len, IXGB_MAX_DATA_PER_TXD); |
Jesse Brandeburg | 5d92785 | 2007-01-06 09:51:23 -0800 | [diff] [blame] | 1280 | /* Workaround for premature desc write-backs |
| 1281 | * in TSO mode. Append 4-byte sentinel desc */ |
| 1282 | if (unlikely(mss && !nr_frags && size == len && size > 8)) |
| 1283 | size -= 4; |
| 1284 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1285 | buffer_info->length = size; |
Jesse Brandeburg | adc5413 | 2006-08-31 14:27:51 -0700 | [diff] [blame] | 1286 | WARN_ON(buffer_info->dma != 0); |
Jesse Brandeburg | 3433663 | 2008-07-08 15:51:37 -0700 | [diff] [blame] | 1287 | buffer_info->time_stamp = jiffies; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1288 | buffer_info->dma = |
| 1289 | pci_map_single(adapter->pdev, |
| 1290 | skb->data + offset, |
| 1291 | size, |
| 1292 | PCI_DMA_TODEVICE); |
Auke Kok | 1dfdd7d | 2006-05-25 13:24:17 -0700 | [diff] [blame] | 1293 | buffer_info->next_to_watch = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1294 | |
| 1295 | len -= size; |
| 1296 | offset += size; |
| 1297 | count++; |
Jesse Brandeburg | 03f8304 | 2008-07-08 15:52:13 -0700 | [diff] [blame] | 1298 | if (++i == tx_ring->count) i = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1299 | } |
| 1300 | |
Jesse Brandeburg | 1459336 | 2008-07-08 15:52:33 -0700 | [diff] [blame] | 1301 | for (f = 0; f < nr_frags; f++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1302 | struct skb_frag_struct *frag; |
| 1303 | |
| 1304 | frag = &skb_shinfo(skb)->frags[f]; |
| 1305 | len = frag->size; |
| 1306 | offset = 0; |
| 1307 | |
Jesse Brandeburg | 9a43299 | 2008-07-08 15:52:18 -0700 | [diff] [blame] | 1308 | while (len) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1309 | buffer_info = &tx_ring->buffer_info[i]; |
Auke Kok | 709cf01 | 2006-07-10 08:51:43 -0700 | [diff] [blame] | 1310 | size = min(len, IXGB_MAX_DATA_PER_TXD); |
Jesse Brandeburg | 5d92785 | 2007-01-06 09:51:23 -0800 | [diff] [blame] | 1311 | |
| 1312 | /* Workaround for premature desc write-backs |
| 1313 | * in TSO mode. Append 4-byte sentinel desc */ |
Auke Kok | 19abe86 | 2007-10-30 11:21:50 -0700 | [diff] [blame] | 1314 | if (unlikely(mss && (f == (nr_frags - 1)) |
| 1315 | && size == len && size > 8)) |
Jesse Brandeburg | 5d92785 | 2007-01-06 09:51:23 -0800 | [diff] [blame] | 1316 | size -= 4; |
| 1317 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1318 | buffer_info->length = size; |
Jesse Brandeburg | 3433663 | 2008-07-08 15:51:37 -0700 | [diff] [blame] | 1319 | buffer_info->time_stamp = jiffies; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1320 | buffer_info->dma = |
| 1321 | pci_map_page(adapter->pdev, |
| 1322 | frag->page, |
| 1323 | frag->page_offset + offset, |
| 1324 | size, |
| 1325 | PCI_DMA_TODEVICE); |
Auke Kok | 1dfdd7d | 2006-05-25 13:24:17 -0700 | [diff] [blame] | 1326 | buffer_info->next_to_watch = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1327 | |
| 1328 | len -= size; |
| 1329 | offset += size; |
| 1330 | count++; |
Jesse Brandeburg | 03f8304 | 2008-07-08 15:52:13 -0700 | [diff] [blame] | 1331 | if (++i == tx_ring->count) i = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1332 | } |
| 1333 | } |
| 1334 | i = (i == 0) ? tx_ring->count - 1 : i - 1; |
| 1335 | tx_ring->buffer_info[i].skb = skb; |
| 1336 | tx_ring->buffer_info[first].next_to_watch = i; |
| 1337 | |
| 1338 | return count; |
| 1339 | } |
| 1340 | |
Auke Kok | 235949d1 | 2006-05-26 09:35:52 -0700 | [diff] [blame] | 1341 | static void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1342 | ixgb_tx_queue(struct ixgb_adapter *adapter, int count, int vlan_id,int tx_flags) |
| 1343 | { |
| 1344 | struct ixgb_desc_ring *tx_ring = &adapter->tx_ring; |
| 1345 | struct ixgb_tx_desc *tx_desc = NULL; |
| 1346 | struct ixgb_buffer *buffer_info; |
Joe Perches | 222441a | 2008-04-03 10:06:25 -0700 | [diff] [blame] | 1347 | u32 cmd_type_len = adapter->tx_cmd_type; |
| 1348 | u8 status = 0; |
| 1349 | u8 popts = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1350 | unsigned int i; |
| 1351 | |
Jesse Brandeburg | 03f8304 | 2008-07-08 15:52:13 -0700 | [diff] [blame] | 1352 | if (tx_flags & IXGB_TX_FLAGS_TSO) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1353 | cmd_type_len |= IXGB_TX_DESC_CMD_TSE; |
| 1354 | popts |= (IXGB_TX_DESC_POPTS_IXSM | IXGB_TX_DESC_POPTS_TXSM); |
| 1355 | } |
| 1356 | |
Jesse Brandeburg | 03f8304 | 2008-07-08 15:52:13 -0700 | [diff] [blame] | 1357 | if (tx_flags & IXGB_TX_FLAGS_CSUM) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1358 | popts |= IXGB_TX_DESC_POPTS_TXSM; |
| 1359 | |
Jesse Brandeburg | 03f8304 | 2008-07-08 15:52:13 -0700 | [diff] [blame] | 1360 | if (tx_flags & IXGB_TX_FLAGS_VLAN) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1361 | cmd_type_len |= IXGB_TX_DESC_CMD_VLE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1362 | |
| 1363 | i = tx_ring->next_to_use; |
| 1364 | |
Jesse Brandeburg | 9a43299 | 2008-07-08 15:52:18 -0700 | [diff] [blame] | 1365 | while (count--) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1366 | buffer_info = &tx_ring->buffer_info[i]; |
| 1367 | tx_desc = IXGB_TX_DESC(*tx_ring, i); |
| 1368 | tx_desc->buff_addr = cpu_to_le64(buffer_info->dma); |
| 1369 | tx_desc->cmd_type_len = |
| 1370 | cpu_to_le32(cmd_type_len | buffer_info->length); |
| 1371 | tx_desc->status = status; |
| 1372 | tx_desc->popts = popts; |
| 1373 | tx_desc->vlan = cpu_to_le16(vlan_id); |
| 1374 | |
Jesse Brandeburg | 03f8304 | 2008-07-08 15:52:13 -0700 | [diff] [blame] | 1375 | if (++i == tx_ring->count) i = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1376 | } |
| 1377 | |
Jesse Brandeburg | 0060c07 | 2008-07-08 15:52:23 -0700 | [diff] [blame] | 1378 | tx_desc->cmd_type_len |= |
| 1379 | cpu_to_le32(IXGB_TX_DESC_CMD_EOP | IXGB_TX_DESC_CMD_RS); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1380 | |
| 1381 | /* Force memory writes to complete before letting h/w |
| 1382 | * know there are new descriptors to fetch. (Only |
| 1383 | * applicable for weak-ordered memory model archs, |
| 1384 | * such as IA-64). */ |
| 1385 | wmb(); |
| 1386 | |
| 1387 | tx_ring->next_to_use = i; |
| 1388 | IXGB_WRITE_REG(&adapter->hw, TDT, i); |
| 1389 | } |
| 1390 | |
Jesse Brandeburg | dfd341e | 2007-01-06 09:51:38 -0800 | [diff] [blame] | 1391 | static int __ixgb_maybe_stop_tx(struct net_device *netdev, int size) |
| 1392 | { |
| 1393 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
| 1394 | struct ixgb_desc_ring *tx_ring = &adapter->tx_ring; |
| 1395 | |
| 1396 | netif_stop_queue(netdev); |
| 1397 | /* Herbert's original patch had: |
| 1398 | * smp_mb__after_netif_stop_queue(); |
| 1399 | * but since that doesn't exist yet, just open code it. */ |
| 1400 | smp_mb(); |
| 1401 | |
| 1402 | /* We need to check again in a case another CPU has just |
| 1403 | * made room available. */ |
| 1404 | if (likely(IXGB_DESC_UNUSED(tx_ring) < size)) |
| 1405 | return -EBUSY; |
| 1406 | |
| 1407 | /* A reprieve! */ |
| 1408 | netif_start_queue(netdev); |
| 1409 | ++adapter->restart_queue; |
| 1410 | return 0; |
| 1411 | } |
| 1412 | |
| 1413 | static int ixgb_maybe_stop_tx(struct net_device *netdev, |
| 1414 | struct ixgb_desc_ring *tx_ring, int size) |
| 1415 | { |
| 1416 | if (likely(IXGB_DESC_UNUSED(tx_ring) >= size)) |
| 1417 | return 0; |
| 1418 | return __ixgb_maybe_stop_tx(netdev, size); |
| 1419 | } |
| 1420 | |
| 1421 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1422 | /* Tx Descriptors needed, worst case */ |
| 1423 | #define TXD_USE_COUNT(S) (((S) >> IXGB_MAX_TXD_PWR) + \ |
| 1424 | (((S) & (IXGB_MAX_DATA_PER_TXD - 1)) ? 1 : 0)) |
Jesse Brandeburg | 5d92785 | 2007-01-06 09:51:23 -0800 | [diff] [blame] | 1425 | #define DESC_NEEDED TXD_USE_COUNT(IXGB_MAX_DATA_PER_TXD) /* skb->date */ + \ |
| 1426 | MAX_SKB_FRAGS * TXD_USE_COUNT(PAGE_SIZE) + 1 /* for context */ \ |
| 1427 | + 1 /* one more needed for sentinel TSO workaround */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1428 | |
| 1429 | static int |
| 1430 | ixgb_xmit_frame(struct sk_buff *skb, struct net_device *netdev) |
| 1431 | { |
Malli Chilakala | 8908c6c | 2005-08-11 13:58:40 -0700 | [diff] [blame] | 1432 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1433 | unsigned int first; |
| 1434 | unsigned int tx_flags = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1435 | int vlan_id = 0; |
| 1436 | int tso; |
| 1437 | |
Jesse Brandeburg | bab2bce | 2008-03-21 11:06:32 -0700 | [diff] [blame] | 1438 | if (test_bit(__IXGB_DOWN, &adapter->flags)) { |
| 1439 | dev_kfree_skb(skb); |
| 1440 | return NETDEV_TX_OK; |
| 1441 | } |
| 1442 | |
Jesse Brandeburg | 03f8304 | 2008-07-08 15:52:13 -0700 | [diff] [blame] | 1443 | if (skb->len <= 0) { |
Jesse Brandeburg | c219934 | 2008-07-08 15:52:53 -0700 | [diff] [blame] | 1444 | dev_kfree_skb(skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1445 | return 0; |
| 1446 | } |
| 1447 | |
Jesse Brandeburg | dfd341e | 2007-01-06 09:51:38 -0800 | [diff] [blame] | 1448 | if (unlikely(ixgb_maybe_stop_tx(netdev, &adapter->tx_ring, |
Jesse Brandeburg | db58294 | 2008-07-08 15:51:52 -0700 | [diff] [blame] | 1449 | DESC_NEEDED))) |
Auke Kok | f017f14 | 2006-05-23 10:29:53 -0700 | [diff] [blame] | 1450 | return NETDEV_TX_BUSY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1451 | |
Jesse Brandeburg | 03f8304 | 2008-07-08 15:52:13 -0700 | [diff] [blame] | 1452 | if (adapter->vlgrp && vlan_tx_tag_present(skb)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1453 | tx_flags |= IXGB_TX_FLAGS_VLAN; |
| 1454 | vlan_id = vlan_tx_tag_get(skb); |
| 1455 | } |
| 1456 | |
| 1457 | first = adapter->tx_ring.next_to_use; |
Jesse Brandeburg | 0060c07 | 2008-07-08 15:52:23 -0700 | [diff] [blame] | 1458 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1459 | tso = ixgb_tso(adapter, skb); |
| 1460 | if (tso < 0) { |
Jesse Brandeburg | c219934 | 2008-07-08 15:52:53 -0700 | [diff] [blame] | 1461 | dev_kfree_skb(skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1462 | return NETDEV_TX_OK; |
| 1463 | } |
| 1464 | |
Auke Kok | 96f9c2e | 2006-05-23 10:29:41 -0700 | [diff] [blame] | 1465 | if (likely(tso)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1466 | tx_flags |= IXGB_TX_FLAGS_TSO; |
Jesse Brandeburg | 03f8304 | 2008-07-08 15:52:13 -0700 | [diff] [blame] | 1467 | else if (ixgb_tx_csum(adapter, skb)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1468 | tx_flags |= IXGB_TX_FLAGS_CSUM; |
| 1469 | |
| 1470 | ixgb_tx_queue(adapter, ixgb_tx_map(adapter, skb, first), vlan_id, |
| 1471 | tx_flags); |
| 1472 | |
| 1473 | netdev->trans_start = jiffies; |
| 1474 | |
Auke Kok | f017f14 | 2006-05-23 10:29:53 -0700 | [diff] [blame] | 1475 | /* Make sure there is space in the ring for the next send. */ |
Jesse Brandeburg | dfd341e | 2007-01-06 09:51:38 -0800 | [diff] [blame] | 1476 | ixgb_maybe_stop_tx(netdev, &adapter->tx_ring, DESC_NEEDED); |
Auke Kok | f017f14 | 2006-05-23 10:29:53 -0700 | [diff] [blame] | 1477 | |
Auke Kok | f017f14 | 2006-05-23 10:29:53 -0700 | [diff] [blame] | 1478 | return NETDEV_TX_OK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1479 | } |
| 1480 | |
| 1481 | /** |
| 1482 | * ixgb_tx_timeout - Respond to a Tx Hang |
| 1483 | * @netdev: network interface device structure |
| 1484 | **/ |
| 1485 | |
| 1486 | static void |
| 1487 | ixgb_tx_timeout(struct net_device *netdev) |
| 1488 | { |
Malli Chilakala | 8908c6c | 2005-08-11 13:58:40 -0700 | [diff] [blame] | 1489 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1490 | |
| 1491 | /* Do the reset outside of interrupt context */ |
| 1492 | schedule_work(&adapter->tx_timeout_task); |
| 1493 | } |
| 1494 | |
| 1495 | static void |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 1496 | ixgb_tx_timeout_task(struct work_struct *work) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1497 | { |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 1498 | struct ixgb_adapter *adapter = |
| 1499 | container_of(work, struct ixgb_adapter, tx_timeout_task); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1500 | |
Auke Kok | 9b8118d | 2006-05-23 10:35:04 -0700 | [diff] [blame] | 1501 | adapter->tx_timeout_count++; |
Joe Perches | 446490c | 2008-03-21 11:06:37 -0700 | [diff] [blame] | 1502 | ixgb_down(adapter, true); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1503 | ixgb_up(adapter); |
| 1504 | } |
| 1505 | |
| 1506 | /** |
| 1507 | * ixgb_get_stats - Get System Network Statistics |
| 1508 | * @netdev: network interface device structure |
| 1509 | * |
| 1510 | * Returns the address of the device statistics structure. |
| 1511 | * The statistics are actually updated from the timer callback. |
| 1512 | **/ |
| 1513 | |
| 1514 | static struct net_device_stats * |
| 1515 | ixgb_get_stats(struct net_device *netdev) |
| 1516 | { |
Malli Chilakala | 8908c6c | 2005-08-11 13:58:40 -0700 | [diff] [blame] | 1517 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1518 | |
| 1519 | return &adapter->net_stats; |
| 1520 | } |
| 1521 | |
| 1522 | /** |
| 1523 | * ixgb_change_mtu - Change the Maximum Transfer Unit |
| 1524 | * @netdev: network interface device structure |
| 1525 | * @new_mtu: new value for maximum frame size |
| 1526 | * |
| 1527 | * Returns 0 on success, negative on failure |
| 1528 | **/ |
| 1529 | |
| 1530 | static int |
| 1531 | ixgb_change_mtu(struct net_device *netdev, int new_mtu) |
| 1532 | { |
Malli Chilakala | 8908c6c | 2005-08-11 13:58:40 -0700 | [diff] [blame] | 1533 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1534 | int max_frame = new_mtu + ENET_HEADER_SIZE + ENET_FCS_LENGTH; |
| 1535 | int old_max_frame = netdev->mtu + ENET_HEADER_SIZE + ENET_FCS_LENGTH; |
| 1536 | |
Jesse Brandeburg | a65a604 | 2008-07-08 15:51:32 -0700 | [diff] [blame] | 1537 | /* MTU < 68 is an error for IPv4 traffic, just don't allow it */ |
| 1538 | if ((new_mtu < 68) || |
| 1539 | (max_frame > IXGB_MAX_JUMBO_FRAME_SIZE + ENET_FCS_LENGTH)) { |
Auke Kok | ec9c3f5 | 2006-05-23 10:34:59 -0700 | [diff] [blame] | 1540 | DPRINTK(PROBE, ERR, "Invalid MTU setting %d\n", new_mtu); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1541 | return -EINVAL; |
| 1542 | } |
| 1543 | |
Jesse Brandeburg | b5ca88e | 2008-07-08 15:51:42 -0700 | [diff] [blame] | 1544 | if (old_max_frame == max_frame) |
| 1545 | return 0; |
| 1546 | |
| 1547 | if (netif_running(netdev)) |
| 1548 | ixgb_down(adapter, true); |
| 1549 | |
Jesse Brandeburg | a3dc3da | 2008-07-08 15:51:22 -0700 | [diff] [blame] | 1550 | adapter->rx_buffer_len = max_frame + 8; /* + 8 for errata */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1551 | |
| 1552 | netdev->mtu = new_mtu; |
| 1553 | |
Jesse Brandeburg | b5ca88e | 2008-07-08 15:51:42 -0700 | [diff] [blame] | 1554 | if (netif_running(netdev)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1555 | ixgb_up(adapter); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1556 | |
| 1557 | return 0; |
| 1558 | } |
| 1559 | |
| 1560 | /** |
| 1561 | * ixgb_update_stats - Update the board statistics counters. |
| 1562 | * @adapter: board private structure |
| 1563 | **/ |
| 1564 | |
| 1565 | void |
| 1566 | ixgb_update_stats(struct ixgb_adapter *adapter) |
| 1567 | { |
Malli Chilakala | 5633684 | 2005-04-28 18:45:50 -0700 | [diff] [blame] | 1568 | struct net_device *netdev = adapter->netdev; |
Linas Vepstas | 01748fb | 2006-08-31 14:27:52 -0700 | [diff] [blame] | 1569 | struct pci_dev *pdev = adapter->pdev; |
| 1570 | |
| 1571 | /* Prevent stats update while adapter is being reset */ |
Linas Vepstas | 81b1955 | 2006-12-12 18:29:15 -0600 | [diff] [blame] | 1572 | if (pci_channel_offline(pdev)) |
Linas Vepstas | 01748fb | 2006-08-31 14:27:52 -0700 | [diff] [blame] | 1573 | return; |
Malli Chilakala | 5633684 | 2005-04-28 18:45:50 -0700 | [diff] [blame] | 1574 | |
Jesse Brandeburg | 03f8304 | 2008-07-08 15:52:13 -0700 | [diff] [blame] | 1575 | if ((netdev->flags & IFF_PROMISC) || (netdev->flags & IFF_ALLMULTI) || |
Malli Chilakala | 5633684 | 2005-04-28 18:45:50 -0700 | [diff] [blame] | 1576 | (netdev->mc_count > IXGB_MAX_NUM_MULTICAST_ADDRESSES)) { |
| 1577 | u64 multi = IXGB_READ_REG(&adapter->hw, MPRCL); |
| 1578 | u32 bcast_l = IXGB_READ_REG(&adapter->hw, BPRCL); |
| 1579 | u32 bcast_h = IXGB_READ_REG(&adapter->hw, BPRCH); |
Jesse Brandeburg | 0060c07 | 2008-07-08 15:52:23 -0700 | [diff] [blame] | 1580 | u64 bcast = ((u64)bcast_h << 32) | bcast_l; |
Malli Chilakala | 5633684 | 2005-04-28 18:45:50 -0700 | [diff] [blame] | 1581 | |
| 1582 | multi |= ((u64)IXGB_READ_REG(&adapter->hw, MPRCH) << 32); |
| 1583 | /* fix up multicast stats by removing broadcasts */ |
Jesse Brandeburg | 03f8304 | 2008-07-08 15:52:13 -0700 | [diff] [blame] | 1584 | if (multi >= bcast) |
Malli Chilakala | 7b89178 | 2005-08-11 13:58:55 -0700 | [diff] [blame] | 1585 | multi -= bcast; |
Jesse Brandeburg | 0060c07 | 2008-07-08 15:52:23 -0700 | [diff] [blame] | 1586 | |
Malli Chilakala | 5633684 | 2005-04-28 18:45:50 -0700 | [diff] [blame] | 1587 | adapter->stats.mprcl += (multi & 0xFFFFFFFF); |
| 1588 | adapter->stats.mprch += (multi >> 32); |
Jesse Brandeburg | 0060c07 | 2008-07-08 15:52:23 -0700 | [diff] [blame] | 1589 | adapter->stats.bprcl += bcast_l; |
Malli Chilakala | 5633684 | 2005-04-28 18:45:50 -0700 | [diff] [blame] | 1590 | adapter->stats.bprch += bcast_h; |
| 1591 | } else { |
| 1592 | adapter->stats.mprcl += IXGB_READ_REG(&adapter->hw, MPRCL); |
| 1593 | adapter->stats.mprch += IXGB_READ_REG(&adapter->hw, MPRCH); |
| 1594 | adapter->stats.bprcl += IXGB_READ_REG(&adapter->hw, BPRCL); |
| 1595 | adapter->stats.bprch += IXGB_READ_REG(&adapter->hw, BPRCH); |
| 1596 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1597 | adapter->stats.tprl += IXGB_READ_REG(&adapter->hw, TPRL); |
| 1598 | adapter->stats.tprh += IXGB_READ_REG(&adapter->hw, TPRH); |
| 1599 | adapter->stats.gprcl += IXGB_READ_REG(&adapter->hw, GPRCL); |
| 1600 | adapter->stats.gprch += IXGB_READ_REG(&adapter->hw, GPRCH); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1601 | adapter->stats.uprcl += IXGB_READ_REG(&adapter->hw, UPRCL); |
| 1602 | adapter->stats.uprch += IXGB_READ_REG(&adapter->hw, UPRCH); |
| 1603 | adapter->stats.vprcl += IXGB_READ_REG(&adapter->hw, VPRCL); |
| 1604 | adapter->stats.vprch += IXGB_READ_REG(&adapter->hw, VPRCH); |
| 1605 | adapter->stats.jprcl += IXGB_READ_REG(&adapter->hw, JPRCL); |
| 1606 | adapter->stats.jprch += IXGB_READ_REG(&adapter->hw, JPRCH); |
| 1607 | adapter->stats.gorcl += IXGB_READ_REG(&adapter->hw, GORCL); |
| 1608 | adapter->stats.gorch += IXGB_READ_REG(&adapter->hw, GORCH); |
| 1609 | adapter->stats.torl += IXGB_READ_REG(&adapter->hw, TORL); |
| 1610 | adapter->stats.torh += IXGB_READ_REG(&adapter->hw, TORH); |
| 1611 | adapter->stats.rnbc += IXGB_READ_REG(&adapter->hw, RNBC); |
| 1612 | adapter->stats.ruc += IXGB_READ_REG(&adapter->hw, RUC); |
| 1613 | adapter->stats.roc += IXGB_READ_REG(&adapter->hw, ROC); |
| 1614 | adapter->stats.rlec += IXGB_READ_REG(&adapter->hw, RLEC); |
| 1615 | adapter->stats.crcerrs += IXGB_READ_REG(&adapter->hw, CRCERRS); |
| 1616 | adapter->stats.icbc += IXGB_READ_REG(&adapter->hw, ICBC); |
| 1617 | adapter->stats.ecbc += IXGB_READ_REG(&adapter->hw, ECBC); |
| 1618 | adapter->stats.mpc += IXGB_READ_REG(&adapter->hw, MPC); |
| 1619 | adapter->stats.tptl += IXGB_READ_REG(&adapter->hw, TPTL); |
| 1620 | adapter->stats.tpth += IXGB_READ_REG(&adapter->hw, TPTH); |
| 1621 | adapter->stats.gptcl += IXGB_READ_REG(&adapter->hw, GPTCL); |
| 1622 | adapter->stats.gptch += IXGB_READ_REG(&adapter->hw, GPTCH); |
| 1623 | adapter->stats.bptcl += IXGB_READ_REG(&adapter->hw, BPTCL); |
| 1624 | adapter->stats.bptch += IXGB_READ_REG(&adapter->hw, BPTCH); |
| 1625 | adapter->stats.mptcl += IXGB_READ_REG(&adapter->hw, MPTCL); |
| 1626 | adapter->stats.mptch += IXGB_READ_REG(&adapter->hw, MPTCH); |
| 1627 | adapter->stats.uptcl += IXGB_READ_REG(&adapter->hw, UPTCL); |
| 1628 | adapter->stats.uptch += IXGB_READ_REG(&adapter->hw, UPTCH); |
| 1629 | adapter->stats.vptcl += IXGB_READ_REG(&adapter->hw, VPTCL); |
| 1630 | adapter->stats.vptch += IXGB_READ_REG(&adapter->hw, VPTCH); |
| 1631 | adapter->stats.jptcl += IXGB_READ_REG(&adapter->hw, JPTCL); |
| 1632 | adapter->stats.jptch += IXGB_READ_REG(&adapter->hw, JPTCH); |
| 1633 | adapter->stats.gotcl += IXGB_READ_REG(&adapter->hw, GOTCL); |
| 1634 | adapter->stats.gotch += IXGB_READ_REG(&adapter->hw, GOTCH); |
| 1635 | adapter->stats.totl += IXGB_READ_REG(&adapter->hw, TOTL); |
| 1636 | adapter->stats.toth += IXGB_READ_REG(&adapter->hw, TOTH); |
| 1637 | adapter->stats.dc += IXGB_READ_REG(&adapter->hw, DC); |
| 1638 | adapter->stats.plt64c += IXGB_READ_REG(&adapter->hw, PLT64C); |
| 1639 | adapter->stats.tsctc += IXGB_READ_REG(&adapter->hw, TSCTC); |
| 1640 | adapter->stats.tsctfc += IXGB_READ_REG(&adapter->hw, TSCTFC); |
| 1641 | adapter->stats.ibic += IXGB_READ_REG(&adapter->hw, IBIC); |
| 1642 | adapter->stats.rfc += IXGB_READ_REG(&adapter->hw, RFC); |
| 1643 | adapter->stats.lfc += IXGB_READ_REG(&adapter->hw, LFC); |
| 1644 | adapter->stats.pfrc += IXGB_READ_REG(&adapter->hw, PFRC); |
| 1645 | adapter->stats.pftc += IXGB_READ_REG(&adapter->hw, PFTC); |
| 1646 | adapter->stats.mcfrc += IXGB_READ_REG(&adapter->hw, MCFRC); |
| 1647 | adapter->stats.mcftc += IXGB_READ_REG(&adapter->hw, MCFTC); |
| 1648 | adapter->stats.xonrxc += IXGB_READ_REG(&adapter->hw, XONRXC); |
| 1649 | adapter->stats.xontxc += IXGB_READ_REG(&adapter->hw, XONTXC); |
| 1650 | adapter->stats.xoffrxc += IXGB_READ_REG(&adapter->hw, XOFFRXC); |
| 1651 | adapter->stats.xofftxc += IXGB_READ_REG(&adapter->hw, XOFFTXC); |
| 1652 | adapter->stats.rjc += IXGB_READ_REG(&adapter->hw, RJC); |
| 1653 | |
| 1654 | /* Fill out the OS statistics structure */ |
| 1655 | |
| 1656 | adapter->net_stats.rx_packets = adapter->stats.gprcl; |
| 1657 | adapter->net_stats.tx_packets = adapter->stats.gptcl; |
| 1658 | adapter->net_stats.rx_bytes = adapter->stats.gorcl; |
| 1659 | adapter->net_stats.tx_bytes = adapter->stats.gotcl; |
| 1660 | adapter->net_stats.multicast = adapter->stats.mprcl; |
| 1661 | adapter->net_stats.collisions = 0; |
| 1662 | |
| 1663 | /* ignore RLEC as it reports errors for padded (<64bytes) frames |
| 1664 | * with a length in the type/len field */ |
| 1665 | adapter->net_stats.rx_errors = |
| 1666 | /* adapter->stats.rnbc + */ adapter->stats.crcerrs + |
| 1667 | adapter->stats.ruc + |
| 1668 | adapter->stats.roc /*+ adapter->stats.rlec */ + |
| 1669 | adapter->stats.icbc + |
| 1670 | adapter->stats.ecbc + adapter->stats.mpc; |
| 1671 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1672 | /* see above |
| 1673 | * adapter->net_stats.rx_length_errors = adapter->stats.rlec; |
| 1674 | */ |
| 1675 | |
| 1676 | adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs; |
| 1677 | adapter->net_stats.rx_fifo_errors = adapter->stats.mpc; |
| 1678 | adapter->net_stats.rx_missed_errors = adapter->stats.mpc; |
| 1679 | adapter->net_stats.rx_over_errors = adapter->stats.mpc; |
| 1680 | |
| 1681 | adapter->net_stats.tx_errors = 0; |
| 1682 | adapter->net_stats.rx_frame_errors = 0; |
| 1683 | adapter->net_stats.tx_aborted_errors = 0; |
| 1684 | adapter->net_stats.tx_carrier_errors = 0; |
| 1685 | adapter->net_stats.tx_fifo_errors = 0; |
| 1686 | adapter->net_stats.tx_heartbeat_errors = 0; |
| 1687 | adapter->net_stats.tx_window_errors = 0; |
| 1688 | } |
| 1689 | |
| 1690 | #define IXGB_MAX_INTR 10 |
| 1691 | /** |
| 1692 | * ixgb_intr - Interrupt Handler |
| 1693 | * @irq: interrupt number |
| 1694 | * @data: pointer to a network interface device structure |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1695 | **/ |
| 1696 | |
| 1697 | static irqreturn_t |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 1698 | ixgb_intr(int irq, void *data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1699 | { |
| 1700 | struct net_device *netdev = data; |
Malli Chilakala | 8908c6c | 2005-08-11 13:58:40 -0700 | [diff] [blame] | 1701 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1702 | struct ixgb_hw *hw = &adapter->hw; |
Joe Perches | 222441a | 2008-04-03 10:06:25 -0700 | [diff] [blame] | 1703 | u32 icr = IXGB_READ_REG(hw, ICR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1704 | |
Jesse Brandeburg | 03f8304 | 2008-07-08 15:52:13 -0700 | [diff] [blame] | 1705 | if (unlikely(!icr)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1706 | return IRQ_NONE; /* Not our interrupt */ |
| 1707 | |
Jesse Brandeburg | bab2bce | 2008-03-21 11:06:32 -0700 | [diff] [blame] | 1708 | if (unlikely(icr & (IXGB_INT_RXSEQ | IXGB_INT_LSC))) |
| 1709 | if (!test_bit(__IXGB_DOWN, &adapter->flags)) |
| 1710 | mod_timer(&adapter->watchdog_timer, jiffies); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1711 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1712 | if (netif_rx_schedule_prep(netdev, &adapter->napi)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1713 | |
Jesse Brandeburg | 0060c07 | 2008-07-08 15:52:23 -0700 | [diff] [blame] | 1714 | /* Disable interrupts and register for poll. The flush |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1715 | of the posted write is intentionally left out. |
| 1716 | */ |
| 1717 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1718 | IXGB_WRITE_REG(&adapter->hw, IMC, ~0); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1719 | __netif_rx_schedule(netdev, &adapter->napi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1720 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1721 | return IRQ_HANDLED; |
| 1722 | } |
| 1723 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1724 | /** |
| 1725 | * ixgb_clean - NAPI Rx polling callback |
| 1726 | * @adapter: board private structure |
| 1727 | **/ |
| 1728 | |
| 1729 | static int |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1730 | ixgb_clean(struct napi_struct *napi, int budget) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1731 | { |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1732 | struct ixgb_adapter *adapter = container_of(napi, struct ixgb_adapter, napi); |
| 1733 | struct net_device *netdev = adapter->netdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1734 | int work_done = 0; |
| 1735 | |
David S. Miller | 53e52c7 | 2008-01-07 21:06:12 -0800 | [diff] [blame] | 1736 | ixgb_clean_tx_irq(adapter); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1737 | ixgb_clean_rx_irq(adapter, &work_done, budget); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1738 | |
David S. Miller | 53e52c7 | 2008-01-07 21:06:12 -0800 | [diff] [blame] | 1739 | /* If budget not fully consumed, exit the polling mode */ |
| 1740 | if (work_done < budget) { |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1741 | netif_rx_complete(netdev, napi); |
Jesse Brandeburg | 72ab519 | 2008-07-08 15:51:27 -0700 | [diff] [blame] | 1742 | if (!test_bit(__IXGB_DOWN, &adapter->flags)) |
| 1743 | ixgb_irq_enable(adapter); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1744 | } |
| 1745 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1746 | return work_done; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1747 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1748 | |
| 1749 | /** |
| 1750 | * ixgb_clean_tx_irq - Reclaim resources after transmit completes |
| 1751 | * @adapter: board private structure |
| 1752 | **/ |
| 1753 | |
Joe Perches | 446490c | 2008-03-21 11:06:37 -0700 | [diff] [blame] | 1754 | static bool |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1755 | ixgb_clean_tx_irq(struct ixgb_adapter *adapter) |
| 1756 | { |
| 1757 | struct ixgb_desc_ring *tx_ring = &adapter->tx_ring; |
| 1758 | struct net_device *netdev = adapter->netdev; |
| 1759 | struct ixgb_tx_desc *tx_desc, *eop_desc; |
| 1760 | struct ixgb_buffer *buffer_info; |
| 1761 | unsigned int i, eop; |
Joe Perches | 446490c | 2008-03-21 11:06:37 -0700 | [diff] [blame] | 1762 | bool cleaned = false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1763 | |
| 1764 | i = tx_ring->next_to_clean; |
| 1765 | eop = tx_ring->buffer_info[i].next_to_watch; |
| 1766 | eop_desc = IXGB_TX_DESC(*tx_ring, eop); |
| 1767 | |
Jesse Brandeburg | 9a43299 | 2008-07-08 15:52:18 -0700 | [diff] [blame] | 1768 | while (eop_desc->status & IXGB_TX_DESC_STATUS_DD) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1769 | |
Joe Perches | 446490c | 2008-03-21 11:06:37 -0700 | [diff] [blame] | 1770 | for (cleaned = false; !cleaned; ) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1771 | tx_desc = IXGB_TX_DESC(*tx_ring, i); |
| 1772 | buffer_info = &tx_ring->buffer_info[i]; |
| 1773 | |
Jesse Brandeburg | 0060c07 | 2008-07-08 15:52:23 -0700 | [diff] [blame] | 1774 | if (tx_desc->popts & |
| 1775 | (IXGB_TX_DESC_POPTS_TXSM | |
| 1776 | IXGB_TX_DESC_POPTS_IXSM)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1777 | adapter->hw_csum_tx_good++; |
| 1778 | |
| 1779 | ixgb_unmap_and_free_tx_resource(adapter, buffer_info); |
| 1780 | |
Joe Perches | 222441a | 2008-04-03 10:06:25 -0700 | [diff] [blame] | 1781 | *(u32 *)&(tx_desc->status) = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1782 | |
| 1783 | cleaned = (i == eop); |
Jesse Brandeburg | 03f8304 | 2008-07-08 15:52:13 -0700 | [diff] [blame] | 1784 | if (++i == tx_ring->count) i = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1785 | } |
| 1786 | |
| 1787 | eop = tx_ring->buffer_info[i].next_to_watch; |
| 1788 | eop_desc = IXGB_TX_DESC(*tx_ring, eop); |
| 1789 | } |
| 1790 | |
| 1791 | tx_ring->next_to_clean = i; |
| 1792 | |
Jesse Brandeburg | 0f8ecba | 2008-07-08 15:51:07 -0700 | [diff] [blame] | 1793 | if (unlikely(cleaned && netif_carrier_ok(netdev) && |
| 1794 | IXGB_DESC_UNUSED(tx_ring) >= DESC_NEEDED)) { |
| 1795 | /* Make sure that anybody stopping the queue after this |
| 1796 | * sees the new next_to_clean. */ |
| 1797 | smp_mb(); |
| 1798 | |
| 1799 | if (netif_queue_stopped(netdev) && |
| 1800 | !(test_bit(__IXGB_DOWN, &adapter->flags))) { |
Auke Kok | 3352a3b | 2006-05-26 09:35:47 -0700 | [diff] [blame] | 1801 | netif_wake_queue(netdev); |
Jesse Brandeburg | 0f8ecba | 2008-07-08 15:51:07 -0700 | [diff] [blame] | 1802 | ++adapter->restart_queue; |
| 1803 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1804 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1805 | |
Jesse Brandeburg | 03f8304 | 2008-07-08 15:52:13 -0700 | [diff] [blame] | 1806 | if (adapter->detect_tx_hung) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1807 | /* detect a transmit hang in hardware, this serializes the |
| 1808 | * check with the clearing of time_stamp and movement of i */ |
Joe Perches | 446490c | 2008-03-21 11:06:37 -0700 | [diff] [blame] | 1809 | adapter->detect_tx_hung = false; |
Auke Kok | 9b8118d | 2006-05-23 10:35:04 -0700 | [diff] [blame] | 1810 | if (tx_ring->buffer_info[eop].dma && |
| 1811 | time_after(jiffies, tx_ring->buffer_info[eop].time_stamp + HZ) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1812 | && !(IXGB_READ_REG(&adapter->hw, STATUS) & |
Auke Kok | 9b8118d | 2006-05-23 10:35:04 -0700 | [diff] [blame] | 1813 | IXGB_STATUS_TXOFF)) { |
| 1814 | /* detected Tx unit hang */ |
| 1815 | DPRINTK(DRV, ERR, "Detected Tx Unit Hang\n" |
| 1816 | " TDH <%x>\n" |
| 1817 | " TDT <%x>\n" |
| 1818 | " next_to_use <%x>\n" |
| 1819 | " next_to_clean <%x>\n" |
| 1820 | "buffer_info[next_to_clean]\n" |
| 1821 | " time_stamp <%lx>\n" |
| 1822 | " next_to_watch <%x>\n" |
| 1823 | " jiffies <%lx>\n" |
| 1824 | " next_to_watch.status <%x>\n", |
| 1825 | IXGB_READ_REG(&adapter->hw, TDH), |
| 1826 | IXGB_READ_REG(&adapter->hw, TDT), |
| 1827 | tx_ring->next_to_use, |
| 1828 | tx_ring->next_to_clean, |
| 1829 | tx_ring->buffer_info[eop].time_stamp, |
| 1830 | eop, |
| 1831 | jiffies, |
| 1832 | eop_desc->status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1833 | netif_stop_queue(netdev); |
Auke Kok | 9b8118d | 2006-05-23 10:35:04 -0700 | [diff] [blame] | 1834 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1835 | } |
| 1836 | |
| 1837 | return cleaned; |
| 1838 | } |
| 1839 | |
| 1840 | /** |
| 1841 | * ixgb_rx_checksum - Receive Checksum Offload for 82597. |
| 1842 | * @adapter: board private structure |
| 1843 | * @rx_desc: receive descriptor |
| 1844 | * @sk_buff: socket buffer with received data |
| 1845 | **/ |
| 1846 | |
Auke Kok | 235949d1 | 2006-05-26 09:35:52 -0700 | [diff] [blame] | 1847 | static void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1848 | ixgb_rx_checksum(struct ixgb_adapter *adapter, |
Jesse Brandeburg | 0060c07 | 2008-07-08 15:52:23 -0700 | [diff] [blame] | 1849 | struct ixgb_rx_desc *rx_desc, |
| 1850 | struct sk_buff *skb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1851 | { |
| 1852 | /* Ignore Checksum bit is set OR |
| 1853 | * TCP Checksum has not been calculated |
| 1854 | */ |
Jesse Brandeburg | 03f8304 | 2008-07-08 15:52:13 -0700 | [diff] [blame] | 1855 | if ((rx_desc->status & IXGB_RX_DESC_STATUS_IXSM) || |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1856 | (!(rx_desc->status & IXGB_RX_DESC_STATUS_TCPCS))) { |
| 1857 | skb->ip_summed = CHECKSUM_NONE; |
| 1858 | return; |
| 1859 | } |
| 1860 | |
| 1861 | /* At this point we know the hardware did the TCP checksum */ |
| 1862 | /* now look at the TCP checksum error bit */ |
Jesse Brandeburg | 03f8304 | 2008-07-08 15:52:13 -0700 | [diff] [blame] | 1863 | if (rx_desc->errors & IXGB_RX_DESC_ERRORS_TCPE) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1864 | /* let the stack verify checksum errors */ |
| 1865 | skb->ip_summed = CHECKSUM_NONE; |
| 1866 | adapter->hw_csum_rx_error++; |
| 1867 | } else { |
| 1868 | /* TCP checksum is good */ |
| 1869 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
| 1870 | adapter->hw_csum_rx_good++; |
| 1871 | } |
| 1872 | } |
| 1873 | |
| 1874 | /** |
| 1875 | * ixgb_clean_rx_irq - Send received data up the network stack, |
| 1876 | * @adapter: board private structure |
| 1877 | **/ |
| 1878 | |
Joe Perches | 446490c | 2008-03-21 11:06:37 -0700 | [diff] [blame] | 1879 | static bool |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1880 | ixgb_clean_rx_irq(struct ixgb_adapter *adapter, int *work_done, int work_to_do) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1881 | { |
| 1882 | struct ixgb_desc_ring *rx_ring = &adapter->rx_ring; |
| 1883 | struct net_device *netdev = adapter->netdev; |
| 1884 | struct pci_dev *pdev = adapter->pdev; |
| 1885 | struct ixgb_rx_desc *rx_desc, *next_rxd; |
| 1886 | struct ixgb_buffer *buffer_info, *next_buffer, *next2_buffer; |
Joe Perches | 222441a | 2008-04-03 10:06:25 -0700 | [diff] [blame] | 1887 | u32 length; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1888 | unsigned int i, j; |
Jesse Brandeburg | fc2d14e | 2008-07-08 15:52:43 -0700 | [diff] [blame] | 1889 | int cleaned_count = 0; |
Joe Perches | 446490c | 2008-03-21 11:06:37 -0700 | [diff] [blame] | 1890 | bool cleaned = false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1891 | |
| 1892 | i = rx_ring->next_to_clean; |
| 1893 | rx_desc = IXGB_RX_DESC(*rx_ring, i); |
| 1894 | buffer_info = &rx_ring->buffer_info[i]; |
| 1895 | |
Jesse Brandeburg | 9a43299 | 2008-07-08 15:52:18 -0700 | [diff] [blame] | 1896 | while (rx_desc->status & IXGB_RX_DESC_STATUS_DD) { |
Jesse Brandeburg | fc2d14e | 2008-07-08 15:52:43 -0700 | [diff] [blame] | 1897 | struct sk_buff *skb; |
Malli Chilakala | f404de1 | 2005-04-28 19:04:54 -0700 | [diff] [blame] | 1898 | u8 status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1899 | |
Jesse Brandeburg | 03f8304 | 2008-07-08 15:52:13 -0700 | [diff] [blame] | 1900 | if (*work_done >= work_to_do) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1901 | break; |
| 1902 | |
| 1903 | (*work_done)++; |
Malli Chilakala | f404de1 | 2005-04-28 19:04:54 -0700 | [diff] [blame] | 1904 | status = rx_desc->status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1905 | skb = buffer_info->skb; |
Auke Kok | 1dfdd7d | 2006-05-25 13:24:17 -0700 | [diff] [blame] | 1906 | buffer_info->skb = NULL; |
Malli Chilakala | f404de1 | 2005-04-28 19:04:54 -0700 | [diff] [blame] | 1907 | |
Jesse Brandeburg | fc2d14e | 2008-07-08 15:52:43 -0700 | [diff] [blame] | 1908 | prefetch(skb->data - NET_IP_ALIGN); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1909 | |
Jesse Brandeburg | 03f8304 | 2008-07-08 15:52:13 -0700 | [diff] [blame] | 1910 | if (++i == rx_ring->count) i = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1911 | next_rxd = IXGB_RX_DESC(*rx_ring, i); |
| 1912 | prefetch(next_rxd); |
| 1913 | |
Jesse Brandeburg | 03f8304 | 2008-07-08 15:52:13 -0700 | [diff] [blame] | 1914 | if ((j = i + 1) == rx_ring->count) j = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1915 | next2_buffer = &rx_ring->buffer_info[j]; |
| 1916 | prefetch(next2_buffer); |
| 1917 | |
| 1918 | next_buffer = &rx_ring->buffer_info[i]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1919 | |
Joe Perches | 446490c | 2008-03-21 11:06:37 -0700 | [diff] [blame] | 1920 | cleaned = true; |
Jesse Brandeburg | fc2d14e | 2008-07-08 15:52:43 -0700 | [diff] [blame] | 1921 | cleaned_count++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1922 | |
| 1923 | pci_unmap_single(pdev, |
| 1924 | buffer_info->dma, |
| 1925 | buffer_info->length, |
| 1926 | PCI_DMA_FROMDEVICE); |
Jesse Brandeburg | fc2d14e | 2008-07-08 15:52:43 -0700 | [diff] [blame] | 1927 | buffer_info->dma = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1928 | |
| 1929 | length = le16_to_cpu(rx_desc->length); |
Jesse Brandeburg | fc2d14e | 2008-07-08 15:52:43 -0700 | [diff] [blame] | 1930 | rx_desc->length = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1931 | |
Jesse Brandeburg | 03f8304 | 2008-07-08 15:52:13 -0700 | [diff] [blame] | 1932 | if (unlikely(!(status & IXGB_RX_DESC_STATUS_EOP))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1933 | |
| 1934 | /* All receives must fit into a single buffer */ |
| 1935 | |
| 1936 | IXGB_DBG("Receive packet consumed multiple buffers " |
| 1937 | "length<%x>\n", length); |
| 1938 | |
| 1939 | dev_kfree_skb_irq(skb); |
Malli Chilakala | f404de1 | 2005-04-28 19:04:54 -0700 | [diff] [blame] | 1940 | goto rxdesc_done; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1941 | } |
| 1942 | |
Jesse Brandeburg | 0060c07 | 2008-07-08 15:52:23 -0700 | [diff] [blame] | 1943 | if (unlikely(rx_desc->errors & |
| 1944 | (IXGB_RX_DESC_ERRORS_CE | IXGB_RX_DESC_ERRORS_SE | |
| 1945 | IXGB_RX_DESC_ERRORS_P | IXGB_RX_DESC_ERRORS_RXE))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1946 | dev_kfree_skb_irq(skb); |
Malli Chilakala | f404de1 | 2005-04-28 19:04:54 -0700 | [diff] [blame] | 1947 | goto rxdesc_done; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1948 | } |
| 1949 | |
Auke Kok | 6b900bb | 2006-05-25 13:24:21 -0700 | [diff] [blame] | 1950 | /* code added for copybreak, this should improve |
| 1951 | * performance for small packets with large amounts |
| 1952 | * of reassembly being done in the stack */ |
Jesse Brandeburg | d9fed18 | 2008-07-08 15:52:02 -0700 | [diff] [blame] | 1953 | if (length < copybreak) { |
Auke Kok | 6b900bb | 2006-05-25 13:24:21 -0700 | [diff] [blame] | 1954 | struct sk_buff *new_skb = |
Auke Kok | 5791704 | 2006-08-31 14:27:50 -0700 | [diff] [blame] | 1955 | netdev_alloc_skb(netdev, length + NET_IP_ALIGN); |
Auke Kok | 6b900bb | 2006-05-25 13:24:21 -0700 | [diff] [blame] | 1956 | if (new_skb) { |
| 1957 | skb_reserve(new_skb, NET_IP_ALIGN); |
Arnaldo Carvalho de Melo | 27d7ff4 | 2007-03-31 11:55:19 -0300 | [diff] [blame] | 1958 | skb_copy_to_linear_data_offset(new_skb, |
| 1959 | -NET_IP_ALIGN, |
| 1960 | (skb->data - |
| 1961 | NET_IP_ALIGN), |
| 1962 | (length + |
| 1963 | NET_IP_ALIGN)); |
Auke Kok | 6b900bb | 2006-05-25 13:24:21 -0700 | [diff] [blame] | 1964 | /* save the skb in buffer_info as good */ |
| 1965 | buffer_info->skb = skb; |
| 1966 | skb = new_skb; |
| 1967 | } |
| 1968 | } |
| 1969 | /* end copybreak code */ |
| 1970 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1971 | /* Good Receive */ |
| 1972 | skb_put(skb, length); |
| 1973 | |
| 1974 | /* Receive Checksum Offload */ |
| 1975 | ixgb_rx_checksum(adapter, rx_desc, skb); |
| 1976 | |
| 1977 | skb->protocol = eth_type_trans(skb, netdev); |
Jesse Brandeburg | 03f8304 | 2008-07-08 15:52:13 -0700 | [diff] [blame] | 1978 | if (adapter->vlgrp && (status & IXGB_RX_DESC_STATUS_VP)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1979 | vlan_hwaccel_receive_skb(skb, adapter->vlgrp, |
Jesse Brandeburg | 0060c07 | 2008-07-08 15:52:23 -0700 | [diff] [blame] | 1980 | le16_to_cpu(rx_desc->special)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1981 | } else { |
| 1982 | netif_receive_skb(skb); |
| 1983 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1984 | netdev->last_rx = jiffies; |
| 1985 | |
Malli Chilakala | f404de1 | 2005-04-28 19:04:54 -0700 | [diff] [blame] | 1986 | rxdesc_done: |
| 1987 | /* clean up descriptor, might be written over by hw */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1988 | rx_desc->status = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1989 | |
Jesse Brandeburg | fc2d14e | 2008-07-08 15:52:43 -0700 | [diff] [blame] | 1990 | /* return some buffers to hardware, one at a time is too slow */ |
| 1991 | if (unlikely(cleaned_count >= IXGB_RX_BUFFER_WRITE)) { |
| 1992 | ixgb_alloc_rx_buffers(adapter, cleaned_count); |
| 1993 | cleaned_count = 0; |
| 1994 | } |
| 1995 | |
Malli Chilakala | f404de1 | 2005-04-28 19:04:54 -0700 | [diff] [blame] | 1996 | /* use prefetched values */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1997 | rx_desc = next_rxd; |
| 1998 | buffer_info = next_buffer; |
| 1999 | } |
| 2000 | |
| 2001 | rx_ring->next_to_clean = i; |
| 2002 | |
Jesse Brandeburg | fc2d14e | 2008-07-08 15:52:43 -0700 | [diff] [blame] | 2003 | cleaned_count = IXGB_DESC_UNUSED(rx_ring); |
| 2004 | if (cleaned_count) |
| 2005 | ixgb_alloc_rx_buffers(adapter, cleaned_count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2006 | |
| 2007 | return cleaned; |
| 2008 | } |
| 2009 | |
| 2010 | /** |
| 2011 | * ixgb_alloc_rx_buffers - Replace used receive buffers |
| 2012 | * @adapter: address of board private structure |
| 2013 | **/ |
| 2014 | |
| 2015 | static void |
Jesse Brandeburg | fc2d14e | 2008-07-08 15:52:43 -0700 | [diff] [blame] | 2016 | ixgb_alloc_rx_buffers(struct ixgb_adapter *adapter, int cleaned_count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2017 | { |
| 2018 | struct ixgb_desc_ring *rx_ring = &adapter->rx_ring; |
| 2019 | struct net_device *netdev = adapter->netdev; |
| 2020 | struct pci_dev *pdev = adapter->pdev; |
| 2021 | struct ixgb_rx_desc *rx_desc; |
| 2022 | struct ixgb_buffer *buffer_info; |
| 2023 | struct sk_buff *skb; |
| 2024 | unsigned int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2025 | long cleancount; |
| 2026 | |
| 2027 | i = rx_ring->next_to_use; |
| 2028 | buffer_info = &rx_ring->buffer_info[i]; |
| 2029 | cleancount = IXGB_DESC_UNUSED(rx_ring); |
| 2030 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2031 | |
Malli Chilakala | 41639fe | 2005-04-28 18:51:54 -0700 | [diff] [blame] | 2032 | /* leave three descriptors unused */ |
Jesse Brandeburg | fc2d14e | 2008-07-08 15:52:43 -0700 | [diff] [blame] | 2033 | while (--cleancount > 2 && cleaned_count--) { |
Auke Kok | 1dfdd7d | 2006-05-25 13:24:17 -0700 | [diff] [blame] | 2034 | /* recycle! its good for you */ |
Auke Kok | 69c7a940 | 2006-08-31 14:27:52 -0700 | [diff] [blame] | 2035 | skb = buffer_info->skb; |
| 2036 | if (skb) { |
Auke Kok | 1dfdd7d | 2006-05-25 13:24:17 -0700 | [diff] [blame] | 2037 | skb_trim(skb, 0); |
| 2038 | goto map_skb; |
| 2039 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2040 | |
Auke Kok | 69c7a940 | 2006-08-31 14:27:52 -0700 | [diff] [blame] | 2041 | skb = netdev_alloc_skb(netdev, adapter->rx_buffer_len |
| 2042 | + NET_IP_ALIGN); |
Auke Kok | 1dfdd7d | 2006-05-25 13:24:17 -0700 | [diff] [blame] | 2043 | if (unlikely(!skb)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2044 | /* Better luck next round */ |
Auke Kok | 1dfdd7d | 2006-05-25 13:24:17 -0700 | [diff] [blame] | 2045 | adapter->alloc_rx_buff_failed++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2046 | break; |
| 2047 | } |
| 2048 | |
| 2049 | /* Make buffer alignment 2 beyond a 16 byte boundary |
| 2050 | * this will result in a 16 byte aligned IP header after |
| 2051 | * the 14 byte MAC header is removed |
| 2052 | */ |
| 2053 | skb_reserve(skb, NET_IP_ALIGN); |
| 2054 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2055 | buffer_info->skb = skb; |
| 2056 | buffer_info->length = adapter->rx_buffer_len; |
Auke Kok | 1dfdd7d | 2006-05-25 13:24:17 -0700 | [diff] [blame] | 2057 | map_skb: |
| 2058 | buffer_info->dma = pci_map_single(pdev, |
| 2059 | skb->data, |
| 2060 | adapter->rx_buffer_len, |
| 2061 | PCI_DMA_FROMDEVICE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2062 | |
Auke Kok | 1dfdd7d | 2006-05-25 13:24:17 -0700 | [diff] [blame] | 2063 | rx_desc = IXGB_RX_DESC(*rx_ring, i); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2064 | rx_desc->buff_addr = cpu_to_le64(buffer_info->dma); |
Malli Chilakala | 41639fe | 2005-04-28 18:51:54 -0700 | [diff] [blame] | 2065 | /* guarantee DD bit not set now before h/w gets descriptor |
Jesse Brandeburg | 0060c07 | 2008-07-08 15:52:23 -0700 | [diff] [blame] | 2066 | * this is the rest of the workaround for h/w double |
Malli Chilakala | 41639fe | 2005-04-28 18:51:54 -0700 | [diff] [blame] | 2067 | * writeback. */ |
| 2068 | rx_desc->status = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2069 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2070 | |
Jesse Brandeburg | 03f8304 | 2008-07-08 15:52:13 -0700 | [diff] [blame] | 2071 | if (++i == rx_ring->count) i = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2072 | buffer_info = &rx_ring->buffer_info[i]; |
| 2073 | } |
| 2074 | |
Auke Kok | 1dfdd7d | 2006-05-25 13:24:17 -0700 | [diff] [blame] | 2075 | if (likely(rx_ring->next_to_use != i)) { |
| 2076 | rx_ring->next_to_use = i; |
| 2077 | if (unlikely(i-- == 0)) |
| 2078 | i = (rx_ring->count - 1); |
| 2079 | |
| 2080 | /* Force memory writes to complete before letting h/w |
| 2081 | * know there are new descriptors to fetch. (Only |
| 2082 | * applicable for weak-ordered memory model archs, such |
| 2083 | * as IA-64). */ |
| 2084 | wmb(); |
| 2085 | IXGB_WRITE_REG(&adapter->hw, RDT, i); |
| 2086 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2087 | } |
| 2088 | |
| 2089 | /** |
| 2090 | * ixgb_vlan_rx_register - enables or disables vlan tagging/stripping. |
Jesse Brandeburg | 0060c07 | 2008-07-08 15:52:23 -0700 | [diff] [blame] | 2091 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2092 | * @param netdev network interface device structure |
| 2093 | * @param grp indicates to enable or disable tagging/stripping |
| 2094 | **/ |
| 2095 | static void |
| 2096 | ixgb_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp) |
| 2097 | { |
Malli Chilakala | 8908c6c | 2005-08-11 13:58:40 -0700 | [diff] [blame] | 2098 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
Joe Perches | 222441a | 2008-04-03 10:06:25 -0700 | [diff] [blame] | 2099 | u32 ctrl, rctl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2100 | |
| 2101 | ixgb_irq_disable(adapter); |
| 2102 | adapter->vlgrp = grp; |
| 2103 | |
Jesse Brandeburg | 03f8304 | 2008-07-08 15:52:13 -0700 | [diff] [blame] | 2104 | if (grp) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2105 | /* enable VLAN tag insert/strip */ |
| 2106 | ctrl = IXGB_READ_REG(&adapter->hw, CTRL0); |
| 2107 | ctrl |= IXGB_CTRL0_VME; |
| 2108 | IXGB_WRITE_REG(&adapter->hw, CTRL0, ctrl); |
| 2109 | |
| 2110 | /* enable VLAN receive filtering */ |
| 2111 | |
| 2112 | rctl = IXGB_READ_REG(&adapter->hw, RCTL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2113 | rctl &= ~IXGB_RCTL_CFIEN; |
| 2114 | IXGB_WRITE_REG(&adapter->hw, RCTL, rctl); |
| 2115 | } else { |
| 2116 | /* disable VLAN tag insert/strip */ |
| 2117 | |
| 2118 | ctrl = IXGB_READ_REG(&adapter->hw, CTRL0); |
| 2119 | ctrl &= ~IXGB_CTRL0_VME; |
| 2120 | IXGB_WRITE_REG(&adapter->hw, CTRL0, ctrl); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2121 | } |
| 2122 | |
Jesse Brandeburg | bab2bce | 2008-03-21 11:06:32 -0700 | [diff] [blame] | 2123 | /* don't enable interrupts unless we are UP */ |
| 2124 | if (adapter->netdev->flags & IFF_UP) |
| 2125 | ixgb_irq_enable(adapter); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2126 | } |
| 2127 | |
| 2128 | static void |
Joe Perches | 222441a | 2008-04-03 10:06:25 -0700 | [diff] [blame] | 2129 | ixgb_vlan_rx_add_vid(struct net_device *netdev, u16 vid) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2130 | { |
Malli Chilakala | 8908c6c | 2005-08-11 13:58:40 -0700 | [diff] [blame] | 2131 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
Joe Perches | 222441a | 2008-04-03 10:06:25 -0700 | [diff] [blame] | 2132 | u32 vfta, index; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2133 | |
| 2134 | /* add VID to filter table */ |
| 2135 | |
| 2136 | index = (vid >> 5) & 0x7F; |
| 2137 | vfta = IXGB_READ_REG_ARRAY(&adapter->hw, VFTA, index); |
| 2138 | vfta |= (1 << (vid & 0x1F)); |
| 2139 | ixgb_write_vfta(&adapter->hw, index, vfta); |
| 2140 | } |
| 2141 | |
| 2142 | static void |
Joe Perches | 222441a | 2008-04-03 10:06:25 -0700 | [diff] [blame] | 2143 | ixgb_vlan_rx_kill_vid(struct net_device *netdev, u16 vid) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2144 | { |
Malli Chilakala | 8908c6c | 2005-08-11 13:58:40 -0700 | [diff] [blame] | 2145 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
Joe Perches | 222441a | 2008-04-03 10:06:25 -0700 | [diff] [blame] | 2146 | u32 vfta, index; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2147 | |
| 2148 | ixgb_irq_disable(adapter); |
| 2149 | |
Dan Aloni | 5c15bde | 2007-03-02 20:44:51 -0800 | [diff] [blame] | 2150 | vlan_group_set_device(adapter->vlgrp, vid, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2151 | |
Jesse Brandeburg | bab2bce | 2008-03-21 11:06:32 -0700 | [diff] [blame] | 2152 | /* don't enable interrupts unless we are UP */ |
| 2153 | if (adapter->netdev->flags & IFF_UP) |
| 2154 | ixgb_irq_enable(adapter); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2155 | |
Jesse Brandeburg | bab2bce | 2008-03-21 11:06:32 -0700 | [diff] [blame] | 2156 | /* remove VID from filter table */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2157 | |
| 2158 | index = (vid >> 5) & 0x7F; |
| 2159 | vfta = IXGB_READ_REG_ARRAY(&adapter->hw, VFTA, index); |
| 2160 | vfta &= ~(1 << (vid & 0x1F)); |
| 2161 | ixgb_write_vfta(&adapter->hw, index, vfta); |
| 2162 | } |
| 2163 | |
| 2164 | static void |
| 2165 | ixgb_restore_vlan(struct ixgb_adapter *adapter) |
| 2166 | { |
| 2167 | ixgb_vlan_rx_register(adapter->netdev, adapter->vlgrp); |
| 2168 | |
Jesse Brandeburg | 03f8304 | 2008-07-08 15:52:13 -0700 | [diff] [blame] | 2169 | if (adapter->vlgrp) { |
Joe Perches | 222441a | 2008-04-03 10:06:25 -0700 | [diff] [blame] | 2170 | u16 vid; |
Jesse Brandeburg | 1459336 | 2008-07-08 15:52:33 -0700 | [diff] [blame] | 2171 | for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) { |
Jesse Brandeburg | 03f8304 | 2008-07-08 15:52:13 -0700 | [diff] [blame] | 2172 | if (!vlan_group_get_device(adapter->vlgrp, vid)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2173 | continue; |
| 2174 | ixgb_vlan_rx_add_vid(adapter->netdev, vid); |
| 2175 | } |
| 2176 | } |
| 2177 | } |
| 2178 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2179 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 2180 | /* |
| 2181 | * Polling 'interrupt' - used by things like netconsole to send skbs |
| 2182 | * without having to re-enable interrupts. It's not called while |
| 2183 | * the interrupt routine is executing. |
| 2184 | */ |
| 2185 | |
| 2186 | static void ixgb_netpoll(struct net_device *dev) |
| 2187 | { |
Auke Kok | f990b42 | 2006-08-31 14:27:50 -0700 | [diff] [blame] | 2188 | struct ixgb_adapter *adapter = netdev_priv(dev); |
Malli Chilakala | ac79c82 | 2005-04-28 19:05:32 -0700 | [diff] [blame] | 2189 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2190 | disable_irq(adapter->pdev->irq); |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 2191 | ixgb_intr(adapter->pdev->irq, dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2192 | enable_irq(adapter->pdev->irq); |
| 2193 | } |
| 2194 | #endif |
| 2195 | |
Linas Vepstas | 01748fb | 2006-08-31 14:27:52 -0700 | [diff] [blame] | 2196 | /** |
| 2197 | * ixgb_io_error_detected() - called when PCI error is detected |
| 2198 | * @pdev pointer to pci device with error |
| 2199 | * @state pci channel state after error |
| 2200 | * |
| 2201 | * This callback is called by the PCI subsystem whenever |
| 2202 | * a PCI bus error is detected. |
| 2203 | */ |
Jesse Brandeburg | 0060c07 | 2008-07-08 15:52:23 -0700 | [diff] [blame] | 2204 | static pci_ers_result_t ixgb_io_error_detected(struct pci_dev *pdev, |
| 2205 | enum pci_channel_state state) |
Linas Vepstas | 01748fb | 2006-08-31 14:27:52 -0700 | [diff] [blame] | 2206 | { |
| 2207 | struct net_device *netdev = pci_get_drvdata(pdev); |
Auke Kok | f7d4fa0 | 2006-09-27 12:54:19 -0700 | [diff] [blame] | 2208 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
Linas Vepstas | 01748fb | 2006-08-31 14:27:52 -0700 | [diff] [blame] | 2209 | |
Jesse Brandeburg | 03f8304 | 2008-07-08 15:52:13 -0700 | [diff] [blame] | 2210 | if (netif_running(netdev)) |
Joe Perches | 446490c | 2008-03-21 11:06:37 -0700 | [diff] [blame] | 2211 | ixgb_down(adapter, true); |
Linas Vepstas | 01748fb | 2006-08-31 14:27:52 -0700 | [diff] [blame] | 2212 | |
| 2213 | pci_disable_device(pdev); |
| 2214 | |
| 2215 | /* Request a slot reset. */ |
| 2216 | return PCI_ERS_RESULT_NEED_RESET; |
| 2217 | } |
| 2218 | |
| 2219 | /** |
| 2220 | * ixgb_io_slot_reset - called after the pci bus has been reset. |
| 2221 | * @pdev pointer to pci device with error |
| 2222 | * |
Jesse Brandeburg | 52035bd | 2008-07-08 15:52:28 -0700 | [diff] [blame] | 2223 | * This callback is called after the PCI bus has been reset. |
Linas Vepstas | 01748fb | 2006-08-31 14:27:52 -0700 | [diff] [blame] | 2224 | * Basically, this tries to restart the card from scratch. |
| 2225 | * This is a shortened version of the device probe/discovery code, |
| 2226 | * it resembles the first-half of the ixgb_probe() routine. |
| 2227 | */ |
Jesse Brandeburg | 0060c07 | 2008-07-08 15:52:23 -0700 | [diff] [blame] | 2228 | static pci_ers_result_t ixgb_io_slot_reset(struct pci_dev *pdev) |
Linas Vepstas | 01748fb | 2006-08-31 14:27:52 -0700 | [diff] [blame] | 2229 | { |
| 2230 | struct net_device *netdev = pci_get_drvdata(pdev); |
Auke Kok | f7d4fa0 | 2006-09-27 12:54:19 -0700 | [diff] [blame] | 2231 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
Linas Vepstas | 01748fb | 2006-08-31 14:27:52 -0700 | [diff] [blame] | 2232 | |
Jesse Brandeburg | 03f8304 | 2008-07-08 15:52:13 -0700 | [diff] [blame] | 2233 | if (pci_enable_device(pdev)) { |
Linas Vepstas | 01748fb | 2006-08-31 14:27:52 -0700 | [diff] [blame] | 2234 | DPRINTK(PROBE, ERR, "Cannot re-enable PCI device after reset.\n"); |
| 2235 | return PCI_ERS_RESULT_DISCONNECT; |
| 2236 | } |
| 2237 | |
| 2238 | /* Perform card reset only on one instance of the card */ |
| 2239 | if (0 != PCI_FUNC (pdev->devfn)) |
| 2240 | return PCI_ERS_RESULT_RECOVERED; |
| 2241 | |
| 2242 | pci_set_master(pdev); |
| 2243 | |
| 2244 | netif_carrier_off(netdev); |
| 2245 | netif_stop_queue(netdev); |
| 2246 | ixgb_reset(adapter); |
| 2247 | |
| 2248 | /* Make sure the EEPROM is good */ |
Jesse Brandeburg | 03f8304 | 2008-07-08 15:52:13 -0700 | [diff] [blame] | 2249 | if (!ixgb_validate_eeprom_checksum(&adapter->hw)) { |
Linas Vepstas | 01748fb | 2006-08-31 14:27:52 -0700 | [diff] [blame] | 2250 | DPRINTK(PROBE, ERR, "After reset, the EEPROM checksum is not valid.\n"); |
| 2251 | return PCI_ERS_RESULT_DISCONNECT; |
| 2252 | } |
| 2253 | ixgb_get_ee_mac_addr(&adapter->hw, netdev->dev_addr); |
| 2254 | memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len); |
| 2255 | |
Jesse Brandeburg | 03f8304 | 2008-07-08 15:52:13 -0700 | [diff] [blame] | 2256 | if (!is_valid_ether_addr(netdev->perm_addr)) { |
Linas Vepstas | 01748fb | 2006-08-31 14:27:52 -0700 | [diff] [blame] | 2257 | DPRINTK(PROBE, ERR, "After reset, invalid MAC address.\n"); |
| 2258 | return PCI_ERS_RESULT_DISCONNECT; |
| 2259 | } |
| 2260 | |
| 2261 | return PCI_ERS_RESULT_RECOVERED; |
| 2262 | } |
| 2263 | |
| 2264 | /** |
| 2265 | * ixgb_io_resume - called when its OK to resume normal operations |
| 2266 | * @pdev pointer to pci device with error |
| 2267 | * |
| 2268 | * The error recovery driver tells us that its OK to resume |
| 2269 | * normal operation. Implementation resembles the second-half |
| 2270 | * of the ixgb_probe() routine. |
| 2271 | */ |
Jesse Brandeburg | 0060c07 | 2008-07-08 15:52:23 -0700 | [diff] [blame] | 2272 | static void ixgb_io_resume(struct pci_dev *pdev) |
Linas Vepstas | 01748fb | 2006-08-31 14:27:52 -0700 | [diff] [blame] | 2273 | { |
| 2274 | struct net_device *netdev = pci_get_drvdata(pdev); |
Auke Kok | f7d4fa0 | 2006-09-27 12:54:19 -0700 | [diff] [blame] | 2275 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
Linas Vepstas | 01748fb | 2006-08-31 14:27:52 -0700 | [diff] [blame] | 2276 | |
| 2277 | pci_set_master(pdev); |
| 2278 | |
Jesse Brandeburg | 03f8304 | 2008-07-08 15:52:13 -0700 | [diff] [blame] | 2279 | if (netif_running(netdev)) { |
| 2280 | if (ixgb_up(adapter)) { |
Linas Vepstas | 01748fb | 2006-08-31 14:27:52 -0700 | [diff] [blame] | 2281 | printk ("ixgb: can't bring device back up after reset\n"); |
| 2282 | return; |
| 2283 | } |
| 2284 | } |
| 2285 | |
| 2286 | netif_device_attach(netdev); |
| 2287 | mod_timer(&adapter->watchdog_timer, jiffies); |
| 2288 | } |
| 2289 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2290 | /* ixgb_main.c */ |