Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1 | /******************************************************************************* |
| 2 | |
| 3 | Intel 10 Gigabit PCI Express Linux driver |
Peter P Waskiewicz Jr | 3efac5a | 2009-02-01 01:19:20 -0800 | [diff] [blame] | 4 | Copyright(c) 1999 - 2009 Intel Corporation. |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -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 |
| 13 | more details. |
| 14 | |
| 15 | You should have received a copy of the GNU General Public License along with |
| 16 | this program; if not, write to the Free Software Foundation, Inc., |
| 17 | 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. |
| 18 | |
| 19 | The full GNU General Public License is included in this distribution in |
| 20 | the file called "COPYING". |
| 21 | |
| 22 | Contact Information: |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 23 | e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> |
| 24 | Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
| 25 | |
| 26 | *******************************************************************************/ |
| 27 | |
| 28 | #include <linux/types.h> |
| 29 | #include <linux/module.h> |
| 30 | #include <linux/pci.h> |
| 31 | #include <linux/netdevice.h> |
| 32 | #include <linux/vmalloc.h> |
| 33 | #include <linux/string.h> |
| 34 | #include <linux/in.h> |
| 35 | #include <linux/ip.h> |
| 36 | #include <linux/tcp.h> |
| 37 | #include <linux/ipv6.h> |
| 38 | #include <net/checksum.h> |
| 39 | #include <net/ip6_checksum.h> |
| 40 | #include <linux/ethtool.h> |
| 41 | #include <linux/if_vlan.h> |
| 42 | |
| 43 | #include "ixgbe.h" |
| 44 | #include "ixgbe_common.h" |
| 45 | |
| 46 | char ixgbe_driver_name[] = "ixgbe"; |
Stephen Hemminger | 9c8eb72 | 2007-10-29 10:46:24 -0700 | [diff] [blame] | 47 | static const char ixgbe_driver_string[] = |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 48 | "Intel(R) 10 Gigabit PCI Express Network Driver"; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 49 | |
Peter P Waskiewicz Jr | 0419305 | 2009-04-09 22:28:50 +0000 | [diff] [blame^] | 50 | #define DRV_VERSION "2.0.16-k2" |
Stephen Hemminger | 9c8eb72 | 2007-10-29 10:46:24 -0700 | [diff] [blame] | 51 | const char ixgbe_driver_version[] = DRV_VERSION; |
Peter P Waskiewicz Jr | 3efac5a | 2009-02-01 01:19:20 -0800 | [diff] [blame] | 52 | static char ixgbe_copyright[] = "Copyright (c) 1999-2009 Intel Corporation."; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 53 | |
| 54 | static const struct ixgbe_info *ixgbe_info_tbl[] = { |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 55 | [board_82598] = &ixgbe_82598_info, |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 56 | [board_82599] = &ixgbe_82599_info, |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 57 | }; |
| 58 | |
| 59 | /* ixgbe_pci_tbl - PCI Device ID Table |
| 60 | * |
| 61 | * Wildcard entries (PCI_ANY_ID) should come last |
| 62 | * Last entry must be all 0s |
| 63 | * |
| 64 | * { Vendor ID, Device ID, SubVendor ID, SubDevice ID, |
| 65 | * Class, Class Mask, private data (not used) } |
| 66 | */ |
| 67 | static struct pci_device_id ixgbe_pci_tbl[] = { |
Don Skidmore | 1e336d0 | 2009-01-26 20:57:51 -0800 | [diff] [blame] | 68 | {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598), |
| 69 | board_82598 }, |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 70 | {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AF_DUAL_PORT), |
Auke Kok | 3957d63 | 2007-10-31 15:22:10 -0700 | [diff] [blame] | 71 | board_82598 }, |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 72 | {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AF_SINGLE_PORT), |
Auke Kok | 3957d63 | 2007-10-31 15:22:10 -0700 | [diff] [blame] | 73 | board_82598 }, |
Jesse Brandeburg | 0befdb3 | 2008-10-31 00:46:40 -0700 | [diff] [blame] | 74 | {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AT), |
| 75 | board_82598 }, |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 76 | {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_CX4), |
Auke Kok | 3957d63 | 2007-10-31 15:22:10 -0700 | [diff] [blame] | 77 | board_82598 }, |
Jesse Brandeburg | 8d792cd | 2008-08-08 16:24:19 -0700 | [diff] [blame] | 78 | {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_CX4_DUAL_PORT), |
| 79 | board_82598 }, |
Donald Skidmore | c4900be | 2008-11-20 21:11:42 -0800 | [diff] [blame] | 80 | {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_DA_DUAL_PORT), |
| 81 | board_82598 }, |
| 82 | {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_SR_DUAL_PORT_EM), |
| 83 | board_82598 }, |
Jesse Brandeburg | b95f5fc | 2008-09-11 19:58:59 -0700 | [diff] [blame] | 84 | {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_XF_LR), |
| 85 | board_82598 }, |
Donald Skidmore | c4900be | 2008-11-20 21:11:42 -0800 | [diff] [blame] | 86 | {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_SFP_LOM), |
| 87 | board_82598 }, |
Don Skidmore | 2f21bdd | 2009-02-01 01:18:23 -0800 | [diff] [blame] | 88 | {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_BX), |
| 89 | board_82598 }, |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 90 | {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_KX4), |
| 91 | board_82599 }, |
| 92 | {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP), |
| 93 | board_82599 }, |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 94 | |
| 95 | /* required last entry */ |
| 96 | {0, } |
| 97 | }; |
| 98 | MODULE_DEVICE_TABLE(pci, ixgbe_pci_tbl); |
| 99 | |
Jeff Garzik | 5dd2d33 | 2008-10-16 05:09:31 -0400 | [diff] [blame] | 100 | #ifdef CONFIG_IXGBE_DCA |
Jeb Cramer | bd0362d | 2008-03-03 15:04:02 -0800 | [diff] [blame] | 101 | static int ixgbe_notify_dca(struct notifier_block *, unsigned long event, |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 102 | void *p); |
Jeb Cramer | bd0362d | 2008-03-03 15:04:02 -0800 | [diff] [blame] | 103 | static struct notifier_block dca_notifier = { |
| 104 | .notifier_call = ixgbe_notify_dca, |
| 105 | .next = NULL, |
| 106 | .priority = 0 |
| 107 | }; |
| 108 | #endif |
| 109 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 110 | MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>"); |
| 111 | MODULE_DESCRIPTION("Intel(R) 10 Gigabit PCI Express Network Driver"); |
| 112 | MODULE_LICENSE("GPL"); |
| 113 | MODULE_VERSION(DRV_VERSION); |
| 114 | |
| 115 | #define DEFAULT_DEBUG_LEVEL_SHIFT 3 |
| 116 | |
Ayyappan Veeraiyan | 5eba369 | 2008-02-01 15:59:04 -0800 | [diff] [blame] | 117 | static void ixgbe_release_hw_control(struct ixgbe_adapter *adapter) |
| 118 | { |
| 119 | u32 ctrl_ext; |
| 120 | |
| 121 | /* Let firmware take over control of h/w */ |
| 122 | ctrl_ext = IXGBE_READ_REG(&adapter->hw, IXGBE_CTRL_EXT); |
| 123 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_CTRL_EXT, |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 124 | ctrl_ext & ~IXGBE_CTRL_EXT_DRV_LOAD); |
Ayyappan Veeraiyan | 5eba369 | 2008-02-01 15:59:04 -0800 | [diff] [blame] | 125 | } |
| 126 | |
| 127 | static void ixgbe_get_hw_control(struct ixgbe_adapter *adapter) |
| 128 | { |
| 129 | u32 ctrl_ext; |
| 130 | |
| 131 | /* Let firmware know the driver has taken over */ |
| 132 | ctrl_ext = IXGBE_READ_REG(&adapter->hw, IXGBE_CTRL_EXT); |
| 133 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_CTRL_EXT, |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 134 | ctrl_ext | IXGBE_CTRL_EXT_DRV_LOAD); |
Ayyappan Veeraiyan | 5eba369 | 2008-02-01 15:59:04 -0800 | [diff] [blame] | 135 | } |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 136 | |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 137 | /* |
| 138 | * ixgbe_set_ivar - set the IVAR registers, mapping interrupt causes to vectors |
| 139 | * @adapter: pointer to adapter struct |
| 140 | * @direction: 0 for Rx, 1 for Tx, -1 for other causes |
| 141 | * @queue: queue to map the corresponding interrupt to |
| 142 | * @msix_vector: the vector to map to the corresponding queue |
| 143 | * |
| 144 | */ |
| 145 | static void ixgbe_set_ivar(struct ixgbe_adapter *adapter, s8 direction, |
| 146 | u8 queue, u8 msix_vector) |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 147 | { |
| 148 | u32 ivar, index; |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 149 | struct ixgbe_hw *hw = &adapter->hw; |
| 150 | switch (hw->mac.type) { |
| 151 | case ixgbe_mac_82598EB: |
| 152 | msix_vector |= IXGBE_IVAR_ALLOC_VAL; |
| 153 | if (direction == -1) |
| 154 | direction = 0; |
| 155 | index = (((direction * 64) + queue) >> 2) & 0x1F; |
| 156 | ivar = IXGBE_READ_REG(hw, IXGBE_IVAR(index)); |
| 157 | ivar &= ~(0xFF << (8 * (queue & 0x3))); |
| 158 | ivar |= (msix_vector << (8 * (queue & 0x3))); |
| 159 | IXGBE_WRITE_REG(hw, IXGBE_IVAR(index), ivar); |
| 160 | break; |
| 161 | case ixgbe_mac_82599EB: |
| 162 | if (direction == -1) { |
| 163 | /* other causes */ |
| 164 | msix_vector |= IXGBE_IVAR_ALLOC_VAL; |
| 165 | index = ((queue & 1) * 8); |
| 166 | ivar = IXGBE_READ_REG(&adapter->hw, IXGBE_IVAR_MISC); |
| 167 | ivar &= ~(0xFF << index); |
| 168 | ivar |= (msix_vector << index); |
| 169 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_IVAR_MISC, ivar); |
| 170 | break; |
| 171 | } else { |
| 172 | /* tx or rx causes */ |
| 173 | msix_vector |= IXGBE_IVAR_ALLOC_VAL; |
| 174 | index = ((16 * (queue & 1)) + (8 * direction)); |
| 175 | ivar = IXGBE_READ_REG(hw, IXGBE_IVAR(queue >> 1)); |
| 176 | ivar &= ~(0xFF << index); |
| 177 | ivar |= (msix_vector << index); |
| 178 | IXGBE_WRITE_REG(hw, IXGBE_IVAR(queue >> 1), ivar); |
| 179 | break; |
| 180 | } |
| 181 | default: |
| 182 | break; |
| 183 | } |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 184 | } |
| 185 | |
| 186 | static void ixgbe_unmap_and_free_tx_resource(struct ixgbe_adapter *adapter, |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 187 | struct ixgbe_tx_buffer |
| 188 | *tx_buffer_info) |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 189 | { |
Alexander Duyck | 44df32c | 2009-03-31 21:34:23 +0000 | [diff] [blame] | 190 | tx_buffer_info->dma = 0; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 191 | if (tx_buffer_info->skb) { |
Alexander Duyck | 44df32c | 2009-03-31 21:34:23 +0000 | [diff] [blame] | 192 | skb_dma_unmap(&adapter->pdev->dev, tx_buffer_info->skb, |
| 193 | DMA_TO_DEVICE); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 194 | dev_kfree_skb_any(tx_buffer_info->skb); |
| 195 | tx_buffer_info->skb = NULL; |
| 196 | } |
Alexander Duyck | 44df32c | 2009-03-31 21:34:23 +0000 | [diff] [blame] | 197 | tx_buffer_info->time_stamp = 0; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 198 | /* tx_buffer_info must be completely set up in the transmit path */ |
| 199 | } |
| 200 | |
| 201 | static inline bool ixgbe_check_tx_hang(struct ixgbe_adapter *adapter, |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 202 | struct ixgbe_ring *tx_ring, |
| 203 | unsigned int eop) |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 204 | { |
Jesse Brandeburg | e01c31a | 2008-08-26 04:27:13 -0700 | [diff] [blame] | 205 | struct ixgbe_hw *hw = &adapter->hw; |
Jesse Brandeburg | e01c31a | 2008-08-26 04:27:13 -0700 | [diff] [blame] | 206 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 207 | /* Detect a transmit hang in hardware, this serializes the |
Jesse Brandeburg | e01c31a | 2008-08-26 04:27:13 -0700 | [diff] [blame] | 208 | * check with the clearing of time_stamp and movement of eop */ |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 209 | adapter->detect_tx_hung = false; |
Alexander Duyck | 44df32c | 2009-03-31 21:34:23 +0000 | [diff] [blame] | 210 | if (tx_ring->tx_buffer_info[eop].time_stamp && |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 211 | time_after(jiffies, tx_ring->tx_buffer_info[eop].time_stamp + HZ) && |
| 212 | !(IXGBE_READ_REG(&adapter->hw, IXGBE_TFCS) & IXGBE_TFCS_TXOFF)) { |
| 213 | /* detected Tx unit hang */ |
Jesse Brandeburg | e01c31a | 2008-08-26 04:27:13 -0700 | [diff] [blame] | 214 | union ixgbe_adv_tx_desc *tx_desc; |
| 215 | tx_desc = IXGBE_TX_DESC_ADV(*tx_ring, eop); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 216 | DPRINTK(DRV, ERR, "Detected Tx Unit Hang\n" |
Jesse Brandeburg | e01c31a | 2008-08-26 04:27:13 -0700 | [diff] [blame] | 217 | " Tx Queue <%d>\n" |
| 218 | " TDH, TDT <%x>, <%x>\n" |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 219 | " next_to_use <%x>\n" |
| 220 | " next_to_clean <%x>\n" |
| 221 | "tx_buffer_info[next_to_clean]\n" |
| 222 | " time_stamp <%lx>\n" |
Jesse Brandeburg | e01c31a | 2008-08-26 04:27:13 -0700 | [diff] [blame] | 223 | " jiffies <%lx>\n", |
| 224 | tx_ring->queue_index, |
Alexander Duyck | 44df32c | 2009-03-31 21:34:23 +0000 | [diff] [blame] | 225 | IXGBE_READ_REG(hw, tx_ring->head), |
| 226 | IXGBE_READ_REG(hw, tx_ring->tail), |
Jesse Brandeburg | e01c31a | 2008-08-26 04:27:13 -0700 | [diff] [blame] | 227 | tx_ring->next_to_use, eop, |
| 228 | tx_ring->tx_buffer_info[eop].time_stamp, jiffies); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 229 | return true; |
| 230 | } |
| 231 | |
| 232 | return false; |
| 233 | } |
| 234 | |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 235 | #define IXGBE_MAX_TXD_PWR 14 |
| 236 | #define IXGBE_MAX_DATA_PER_TXD (1 << IXGBE_MAX_TXD_PWR) |
Ayyappan Veeraiyan | e092be6 | 2008-02-01 15:58:49 -0800 | [diff] [blame] | 237 | |
| 238 | /* Tx Descriptors needed, worst case */ |
| 239 | #define TXD_USE_COUNT(S) (((S) >> IXGBE_MAX_TXD_PWR) + \ |
| 240 | (((S) & (IXGBE_MAX_DATA_PER_TXD - 1)) ? 1 : 0)) |
| 241 | #define DESC_NEEDED (TXD_USE_COUNT(IXGBE_MAX_DATA_PER_TXD) /* skb->data */ + \ |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 242 | MAX_SKB_FRAGS * TXD_USE_COUNT(PAGE_SIZE) + 1) /* for context */ |
Ayyappan Veeraiyan | e092be6 | 2008-02-01 15:58:49 -0800 | [diff] [blame] | 243 | |
Jesse Brandeburg | e01c31a | 2008-08-26 04:27:13 -0700 | [diff] [blame] | 244 | static void ixgbe_tx_timeout(struct net_device *netdev); |
| 245 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 246 | /** |
| 247 | * ixgbe_clean_tx_irq - Reclaim resources after transmit completes |
| 248 | * @adapter: board private structure |
Jesse Brandeburg | e01c31a | 2008-08-26 04:27:13 -0700 | [diff] [blame] | 249 | * @tx_ring: tx ring to clean |
Jesse Brandeburg | 9a1a69ad | 2009-03-13 22:14:10 +0000 | [diff] [blame] | 250 | * |
| 251 | * returns true if transmit work is done |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 252 | **/ |
| 253 | static bool ixgbe_clean_tx_irq(struct ixgbe_adapter *adapter, |
Jesse Brandeburg | e01c31a | 2008-08-26 04:27:13 -0700 | [diff] [blame] | 254 | struct ixgbe_ring *tx_ring) |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 255 | { |
Jesse Brandeburg | e01c31a | 2008-08-26 04:27:13 -0700 | [diff] [blame] | 256 | struct net_device *netdev = adapter->netdev; |
Peter P Waskiewicz Jr | 12207e4 | 2009-02-06 21:47:24 -0800 | [diff] [blame] | 257 | union ixgbe_adv_tx_desc *tx_desc, *eop_desc; |
| 258 | struct ixgbe_tx_buffer *tx_buffer_info; |
| 259 | unsigned int i, eop, count = 0; |
Jesse Brandeburg | e01c31a | 2008-08-26 04:27:13 -0700 | [diff] [blame] | 260 | unsigned int total_bytes = 0, total_packets = 0; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 261 | |
| 262 | i = tx_ring->next_to_clean; |
Peter P Waskiewicz Jr | 12207e4 | 2009-02-06 21:47:24 -0800 | [diff] [blame] | 263 | eop = tx_ring->tx_buffer_info[i].next_to_watch; |
| 264 | eop_desc = IXGBE_TX_DESC_ADV(*tx_ring, eop); |
| 265 | |
| 266 | while ((eop_desc->wb.status & cpu_to_le32(IXGBE_TXD_STAT_DD)) && |
Jesse Brandeburg | 9a1a69ad | 2009-03-13 22:14:10 +0000 | [diff] [blame] | 267 | (count < tx_ring->work_limit)) { |
Peter P Waskiewicz Jr | 12207e4 | 2009-02-06 21:47:24 -0800 | [diff] [blame] | 268 | bool cleaned = false; |
| 269 | for ( ; !cleaned; count++) { |
| 270 | struct sk_buff *skb; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 271 | tx_desc = IXGBE_TX_DESC_ADV(*tx_ring, i); |
| 272 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; |
Peter P Waskiewicz Jr | 12207e4 | 2009-02-06 21:47:24 -0800 | [diff] [blame] | 273 | cleaned = (i == eop); |
Jesse Brandeburg | e01c31a | 2008-08-26 04:27:13 -0700 | [diff] [blame] | 274 | skb = tx_buffer_info->skb; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 275 | |
Peter P Waskiewicz Jr | 12207e4 | 2009-02-06 21:47:24 -0800 | [diff] [blame] | 276 | if (cleaned && skb) { |
Ayyappan Veeraiyan | e092be6 | 2008-02-01 15:58:49 -0800 | [diff] [blame] | 277 | unsigned int segs, bytecount; |
Jesse Brandeburg | e01c31a | 2008-08-26 04:27:13 -0700 | [diff] [blame] | 278 | |
| 279 | /* gso_segs is currently only valid for tcp */ |
Ayyappan Veeraiyan | e092be6 | 2008-02-01 15:58:49 -0800 | [diff] [blame] | 280 | segs = skb_shinfo(skb)->gso_segs ?: 1; |
| 281 | /* multiply data chunks by size of headers */ |
| 282 | bytecount = ((segs - 1) * skb_headlen(skb)) + |
Jesse Brandeburg | e01c31a | 2008-08-26 04:27:13 -0700 | [diff] [blame] | 283 | skb->len; |
| 284 | total_packets += segs; |
| 285 | total_bytes += bytecount; |
Ayyappan Veeraiyan | e092be6 | 2008-02-01 15:58:49 -0800 | [diff] [blame] | 286 | } |
Jesse Brandeburg | e01c31a | 2008-08-26 04:27:13 -0700 | [diff] [blame] | 287 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 288 | ixgbe_unmap_and_free_tx_resource(adapter, |
Jesse Brandeburg | e01c31a | 2008-08-26 04:27:13 -0700 | [diff] [blame] | 289 | tx_buffer_info); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 290 | |
Peter P Waskiewicz Jr | 12207e4 | 2009-02-06 21:47:24 -0800 | [diff] [blame] | 291 | tx_desc->wb.status = 0; |
| 292 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 293 | i++; |
| 294 | if (i == tx_ring->count) |
| 295 | i = 0; |
| 296 | } |
| 297 | |
Peter P Waskiewicz Jr | 12207e4 | 2009-02-06 21:47:24 -0800 | [diff] [blame] | 298 | eop = tx_ring->tx_buffer_info[i].next_to_watch; |
| 299 | eop_desc = IXGBE_TX_DESC_ADV(*tx_ring, eop); |
| 300 | } |
| 301 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 302 | tx_ring->next_to_clean = i; |
| 303 | |
Ayyappan Veeraiyan | e092be6 | 2008-02-01 15:58:49 -0800 | [diff] [blame] | 304 | #define TX_WAKE_THRESHOLD (DESC_NEEDED * 2) |
Jesse Brandeburg | e01c31a | 2008-08-26 04:27:13 -0700 | [diff] [blame] | 305 | if (unlikely(count && netif_carrier_ok(netdev) && |
| 306 | (IXGBE_DESC_UNUSED(tx_ring) >= TX_WAKE_THRESHOLD))) { |
Ayyappan Veeraiyan | e092be6 | 2008-02-01 15:58:49 -0800 | [diff] [blame] | 307 | /* Make sure that anybody stopping the queue after this |
| 308 | * sees the new next_to_clean. |
| 309 | */ |
| 310 | smp_mb(); |
Ayyappan Veeraiyan | 30eba97 | 2008-03-03 15:03:52 -0800 | [diff] [blame] | 311 | if (__netif_subqueue_stopped(netdev, tx_ring->queue_index) && |
| 312 | !test_bit(__IXGBE_DOWN, &adapter->state)) { |
| 313 | netif_wake_subqueue(netdev, tx_ring->queue_index); |
Jesse Brandeburg | e01c31a | 2008-08-26 04:27:13 -0700 | [diff] [blame] | 314 | ++adapter->restart_queue; |
Ayyappan Veeraiyan | 30eba97 | 2008-03-03 15:03:52 -0800 | [diff] [blame] | 315 | } |
Ayyappan Veeraiyan | e092be6 | 2008-02-01 15:58:49 -0800 | [diff] [blame] | 316 | } |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 317 | |
Jesse Brandeburg | e01c31a | 2008-08-26 04:27:13 -0700 | [diff] [blame] | 318 | if (adapter->detect_tx_hung) { |
| 319 | if (ixgbe_check_tx_hang(adapter, tx_ring, i)) { |
| 320 | /* schedule immediate reset if we believe we hung */ |
| 321 | DPRINTK(PROBE, INFO, |
| 322 | "tx hang %d detected, resetting adapter\n", |
| 323 | adapter->tx_timeout_count + 1); |
| 324 | ixgbe_tx_timeout(adapter->netdev); |
| 325 | } |
| 326 | } |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 327 | |
Jesse Brandeburg | e01c31a | 2008-08-26 04:27:13 -0700 | [diff] [blame] | 328 | /* re-arm the interrupt */ |
Jesse Brandeburg | 9a1a69ad | 2009-03-13 22:14:10 +0000 | [diff] [blame] | 329 | if (count >= tx_ring->work_limit) |
Jesse Brandeburg | e01c31a | 2008-08-26 04:27:13 -0700 | [diff] [blame] | 330 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS, tx_ring->v_idx); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 331 | |
Jesse Brandeburg | e01c31a | 2008-08-26 04:27:13 -0700 | [diff] [blame] | 332 | tx_ring->total_bytes += total_bytes; |
| 333 | tx_ring->total_packets += total_packets; |
Jesse Brandeburg | e01c31a | 2008-08-26 04:27:13 -0700 | [diff] [blame] | 334 | tx_ring->stats.packets += total_packets; |
Peter P Waskiewicz Jr | 12207e4 | 2009-02-06 21:47:24 -0800 | [diff] [blame] | 335 | tx_ring->stats.bytes += total_bytes; |
Jesse Brandeburg | e01c31a | 2008-08-26 04:27:13 -0700 | [diff] [blame] | 336 | adapter->net_stats.tx_bytes += total_bytes; |
| 337 | adapter->net_stats.tx_packets += total_packets; |
Jesse Brandeburg | 9a1a69ad | 2009-03-13 22:14:10 +0000 | [diff] [blame] | 338 | return (count < tx_ring->work_limit); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 339 | } |
| 340 | |
Jeff Garzik | 5dd2d33 | 2008-10-16 05:09:31 -0400 | [diff] [blame] | 341 | #ifdef CONFIG_IXGBE_DCA |
Jeb Cramer | bd0362d | 2008-03-03 15:04:02 -0800 | [diff] [blame] | 342 | static void ixgbe_update_rx_dca(struct ixgbe_adapter *adapter, |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 343 | struct ixgbe_ring *rx_ring) |
Jeb Cramer | bd0362d | 2008-03-03 15:04:02 -0800 | [diff] [blame] | 344 | { |
| 345 | u32 rxctrl; |
| 346 | int cpu = get_cpu(); |
Jesse Brandeburg | 3a58107 | 2008-08-26 04:27:08 -0700 | [diff] [blame] | 347 | int q = rx_ring - adapter->rx_ring; |
Jeb Cramer | bd0362d | 2008-03-03 15:04:02 -0800 | [diff] [blame] | 348 | |
Jesse Brandeburg | 3a58107 | 2008-08-26 04:27:08 -0700 | [diff] [blame] | 349 | if (rx_ring->cpu != cpu) { |
Jeb Cramer | bd0362d | 2008-03-03 15:04:02 -0800 | [diff] [blame] | 350 | rxctrl = IXGBE_READ_REG(&adapter->hw, IXGBE_DCA_RXCTRL(q)); |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 351 | if (adapter->hw.mac.type == ixgbe_mac_82598EB) { |
| 352 | rxctrl &= ~IXGBE_DCA_RXCTRL_CPUID_MASK; |
| 353 | rxctrl |= dca3_get_tag(&adapter->pdev->dev, cpu); |
| 354 | } else if (adapter->hw.mac.type == ixgbe_mac_82599EB) { |
| 355 | rxctrl &= ~IXGBE_DCA_RXCTRL_CPUID_MASK_82599; |
| 356 | rxctrl |= (dca3_get_tag(&adapter->pdev->dev, cpu) << |
| 357 | IXGBE_DCA_RXCTRL_CPUID_SHIFT_82599); |
| 358 | } |
Jeb Cramer | bd0362d | 2008-03-03 15:04:02 -0800 | [diff] [blame] | 359 | rxctrl |= IXGBE_DCA_RXCTRL_DESC_DCA_EN; |
| 360 | rxctrl |= IXGBE_DCA_RXCTRL_HEAD_DCA_EN; |
Don Skidmore | 15005a3 | 2009-01-19 16:54:13 -0800 | [diff] [blame] | 361 | rxctrl &= ~(IXGBE_DCA_RXCTRL_DESC_RRO_EN); |
| 362 | rxctrl &= ~(IXGBE_DCA_RXCTRL_DESC_WRO_EN | |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 363 | IXGBE_DCA_RXCTRL_DESC_HSRO_EN); |
Jeb Cramer | bd0362d | 2008-03-03 15:04:02 -0800 | [diff] [blame] | 364 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_RXCTRL(q), rxctrl); |
Jesse Brandeburg | 3a58107 | 2008-08-26 04:27:08 -0700 | [diff] [blame] | 365 | rx_ring->cpu = cpu; |
Jeb Cramer | bd0362d | 2008-03-03 15:04:02 -0800 | [diff] [blame] | 366 | } |
| 367 | put_cpu(); |
| 368 | } |
| 369 | |
| 370 | static void ixgbe_update_tx_dca(struct ixgbe_adapter *adapter, |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 371 | struct ixgbe_ring *tx_ring) |
Jeb Cramer | bd0362d | 2008-03-03 15:04:02 -0800 | [diff] [blame] | 372 | { |
| 373 | u32 txctrl; |
| 374 | int cpu = get_cpu(); |
Jesse Brandeburg | 3a58107 | 2008-08-26 04:27:08 -0700 | [diff] [blame] | 375 | int q = tx_ring - adapter->tx_ring; |
Jeb Cramer | bd0362d | 2008-03-03 15:04:02 -0800 | [diff] [blame] | 376 | |
Jesse Brandeburg | 3a58107 | 2008-08-26 04:27:08 -0700 | [diff] [blame] | 377 | if (tx_ring->cpu != cpu) { |
Jeb Cramer | bd0362d | 2008-03-03 15:04:02 -0800 | [diff] [blame] | 378 | txctrl = IXGBE_READ_REG(&adapter->hw, IXGBE_DCA_TXCTRL(q)); |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 379 | if (adapter->hw.mac.type == ixgbe_mac_82598EB) { |
| 380 | txctrl &= ~IXGBE_DCA_TXCTRL_CPUID_MASK; |
| 381 | txctrl |= dca3_get_tag(&adapter->pdev->dev, cpu); |
| 382 | } else if (adapter->hw.mac.type == ixgbe_mac_82599EB) { |
| 383 | txctrl &= ~IXGBE_DCA_TXCTRL_CPUID_MASK_82599; |
| 384 | txctrl |= (dca3_get_tag(&adapter->pdev->dev, cpu) << |
| 385 | IXGBE_DCA_TXCTRL_CPUID_SHIFT_82599); |
| 386 | } |
Jeb Cramer | bd0362d | 2008-03-03 15:04:02 -0800 | [diff] [blame] | 387 | txctrl |= IXGBE_DCA_TXCTRL_DESC_DCA_EN; |
| 388 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_TXCTRL(q), txctrl); |
Jesse Brandeburg | 3a58107 | 2008-08-26 04:27:08 -0700 | [diff] [blame] | 389 | tx_ring->cpu = cpu; |
Jeb Cramer | bd0362d | 2008-03-03 15:04:02 -0800 | [diff] [blame] | 390 | } |
| 391 | put_cpu(); |
| 392 | } |
| 393 | |
| 394 | static void ixgbe_setup_dca(struct ixgbe_adapter *adapter) |
| 395 | { |
| 396 | int i; |
| 397 | |
| 398 | if (!(adapter->flags & IXGBE_FLAG_DCA_ENABLED)) |
| 399 | return; |
| 400 | |
| 401 | for (i = 0; i < adapter->num_tx_queues; i++) { |
| 402 | adapter->tx_ring[i].cpu = -1; |
| 403 | ixgbe_update_tx_dca(adapter, &adapter->tx_ring[i]); |
| 404 | } |
| 405 | for (i = 0; i < adapter->num_rx_queues; i++) { |
| 406 | adapter->rx_ring[i].cpu = -1; |
| 407 | ixgbe_update_rx_dca(adapter, &adapter->rx_ring[i]); |
| 408 | } |
| 409 | } |
| 410 | |
| 411 | static int __ixgbe_notify_dca(struct device *dev, void *data) |
| 412 | { |
| 413 | struct net_device *netdev = dev_get_drvdata(dev); |
| 414 | struct ixgbe_adapter *adapter = netdev_priv(netdev); |
| 415 | unsigned long event = *(unsigned long *)data; |
| 416 | |
| 417 | switch (event) { |
| 418 | case DCA_PROVIDER_ADD: |
Jesse Brandeburg | 96b0e0f | 2008-08-26 04:27:21 -0700 | [diff] [blame] | 419 | /* if we're already enabled, don't do it again */ |
| 420 | if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) |
| 421 | break; |
Jeb Cramer | bd0362d | 2008-03-03 15:04:02 -0800 | [diff] [blame] | 422 | /* Always use CB2 mode, difference is masked |
| 423 | * in the CB driver. */ |
| 424 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 2); |
Denis V. Lunev | 652f093 | 2008-03-27 14:39:17 +0300 | [diff] [blame] | 425 | if (dca_add_requester(dev) == 0) { |
Jesse Brandeburg | 96b0e0f | 2008-08-26 04:27:21 -0700 | [diff] [blame] | 426 | adapter->flags |= IXGBE_FLAG_DCA_ENABLED; |
Jeb Cramer | bd0362d | 2008-03-03 15:04:02 -0800 | [diff] [blame] | 427 | ixgbe_setup_dca(adapter); |
| 428 | break; |
| 429 | } |
| 430 | /* Fall Through since DCA is disabled. */ |
| 431 | case DCA_PROVIDER_REMOVE: |
| 432 | if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) { |
| 433 | dca_remove_requester(dev); |
| 434 | adapter->flags &= ~IXGBE_FLAG_DCA_ENABLED; |
| 435 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 1); |
| 436 | } |
| 437 | break; |
| 438 | } |
| 439 | |
Denis V. Lunev | 652f093 | 2008-03-27 14:39:17 +0300 | [diff] [blame] | 440 | return 0; |
Jeb Cramer | bd0362d | 2008-03-03 15:04:02 -0800 | [diff] [blame] | 441 | } |
| 442 | |
Jeff Garzik | 5dd2d33 | 2008-10-16 05:09:31 -0400 | [diff] [blame] | 443 | #endif /* CONFIG_IXGBE_DCA */ |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 444 | /** |
| 445 | * ixgbe_receive_skb - Send a completed packet up the stack |
| 446 | * @adapter: board private structure |
| 447 | * @skb: packet to send up |
Mallikarjuna R Chilakala | 177db6f | 2008-06-18 15:32:19 -0700 | [diff] [blame] | 448 | * @status: hardware indication of status of receive |
| 449 | * @rx_ring: rx descriptor ring (for a specific queue) to setup |
| 450 | * @rx_desc: rx descriptor |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 451 | **/ |
Herbert Xu | 78b6f4c | 2009-01-18 21:49:45 -0800 | [diff] [blame] | 452 | static void ixgbe_receive_skb(struct ixgbe_q_vector *q_vector, |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 453 | struct sk_buff *skb, u8 status, |
Mallikarjuna R Chilakala | 177db6f | 2008-06-18 15:32:19 -0700 | [diff] [blame] | 454 | union ixgbe_adv_rx_desc *rx_desc) |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 455 | { |
Herbert Xu | 78b6f4c | 2009-01-18 21:49:45 -0800 | [diff] [blame] | 456 | struct ixgbe_adapter *adapter = q_vector->adapter; |
| 457 | struct napi_struct *napi = &q_vector->napi; |
Mallikarjuna R Chilakala | 177db6f | 2008-06-18 15:32:19 -0700 | [diff] [blame] | 458 | bool is_vlan = (status & IXGBE_RXD_STAT_VP); |
| 459 | u16 tag = le16_to_cpu(rx_desc->wb.upper.vlan); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 460 | |
David S. Miller | 0c8dfc8 | 2009-01-27 16:22:32 -0800 | [diff] [blame] | 461 | skb_record_rx_queue(skb, q_vector - &adapter->q_vector[0]); |
Herbert Xu | 78b6f4c | 2009-01-18 21:49:45 -0800 | [diff] [blame] | 462 | if (skb->ip_summed == CHECKSUM_UNNECESSARY) { |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 463 | if (adapter->vlgrp && is_vlan && (tag != 0)) |
Herbert Xu | 78b6f4c | 2009-01-18 21:49:45 -0800 | [diff] [blame] | 464 | vlan_gro_receive(napi, adapter->vlgrp, tag, skb); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 465 | else |
Herbert Xu | 78b6f4c | 2009-01-18 21:49:45 -0800 | [diff] [blame] | 466 | napi_gro_receive(napi, skb); |
Mallikarjuna R Chilakala | 177db6f | 2008-06-18 15:32:19 -0700 | [diff] [blame] | 467 | } else { |
| 468 | if (!(adapter->flags & IXGBE_FLAG_IN_NETPOLL)) { |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 469 | if (adapter->vlgrp && is_vlan && (tag != 0)) |
Mallikarjuna R Chilakala | 177db6f | 2008-06-18 15:32:19 -0700 | [diff] [blame] | 470 | vlan_hwaccel_receive_skb(skb, adapter->vlgrp, tag); |
| 471 | else |
| 472 | netif_receive_skb(skb); |
| 473 | } else { |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 474 | if (adapter->vlgrp && is_vlan && (tag != 0)) |
Mallikarjuna R Chilakala | 177db6f | 2008-06-18 15:32:19 -0700 | [diff] [blame] | 475 | vlan_hwaccel_rx(skb, adapter->vlgrp, tag); |
| 476 | else |
| 477 | netif_rx(skb); |
| 478 | } |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 479 | } |
| 480 | } |
| 481 | |
Ayyappan Veeraiyan | e59bd25 | 2008-02-01 15:59:09 -0800 | [diff] [blame] | 482 | /** |
| 483 | * ixgbe_rx_checksum - indicate in skb if hw indicated a good cksum |
| 484 | * @adapter: address of board private structure |
| 485 | * @status_err: hardware indication of status of receive |
| 486 | * @skb: skb currently being received and modified |
| 487 | **/ |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 488 | static inline void ixgbe_rx_checksum(struct ixgbe_adapter *adapter, |
Jesse Brandeburg | 712744b | 2008-08-26 04:26:56 -0700 | [diff] [blame] | 489 | u32 status_err, struct sk_buff *skb) |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 490 | { |
| 491 | skb->ip_summed = CHECKSUM_NONE; |
| 492 | |
Jesse Brandeburg | 712744b | 2008-08-26 04:26:56 -0700 | [diff] [blame] | 493 | /* Rx csum disabled */ |
| 494 | if (!(adapter->flags & IXGBE_FLAG_RX_CSUM_ENABLED)) |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 495 | return; |
Ayyappan Veeraiyan | e59bd25 | 2008-02-01 15:59:09 -0800 | [diff] [blame] | 496 | |
| 497 | /* if IP and error */ |
| 498 | if ((status_err & IXGBE_RXD_STAT_IPCS) && |
| 499 | (status_err & IXGBE_RXDADV_ERR_IPE)) { |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 500 | adapter->hw_csum_rx_error++; |
| 501 | return; |
| 502 | } |
Ayyappan Veeraiyan | e59bd25 | 2008-02-01 15:59:09 -0800 | [diff] [blame] | 503 | |
| 504 | if (!(status_err & IXGBE_RXD_STAT_L4CS)) |
| 505 | return; |
| 506 | |
| 507 | if (status_err & IXGBE_RXDADV_ERR_TCPE) { |
| 508 | adapter->hw_csum_rx_error++; |
| 509 | return; |
| 510 | } |
| 511 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 512 | /* It must be a TCP or UDP packet with a valid checksum */ |
Ayyappan Veeraiyan | e59bd25 | 2008-02-01 15:59:09 -0800 | [diff] [blame] | 513 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 514 | adapter->hw_csum_rx_good++; |
| 515 | } |
| 516 | |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 517 | static inline void ixgbe_release_rx_desc(struct ixgbe_hw *hw, |
| 518 | struct ixgbe_ring *rx_ring, u32 val) |
| 519 | { |
| 520 | /* |
| 521 | * Force memory writes to complete before letting h/w |
| 522 | * know there are new descriptors to fetch. (Only |
| 523 | * applicable for weak-ordered memory model archs, |
| 524 | * such as IA-64). |
| 525 | */ |
| 526 | wmb(); |
| 527 | IXGBE_WRITE_REG(hw, IXGBE_RDT(rx_ring->reg_idx), val); |
| 528 | } |
| 529 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 530 | /** |
| 531 | * ixgbe_alloc_rx_buffers - Replace used receive buffers; packet split |
| 532 | * @adapter: address of board private structure |
| 533 | **/ |
| 534 | static void ixgbe_alloc_rx_buffers(struct ixgbe_adapter *adapter, |
Jesse Brandeburg | 7c6e0a4 | 2008-08-26 04:27:16 -0700 | [diff] [blame] | 535 | struct ixgbe_ring *rx_ring, |
| 536 | int cleaned_count) |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 537 | { |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 538 | struct pci_dev *pdev = adapter->pdev; |
| 539 | union ixgbe_adv_rx_desc *rx_desc; |
Jesse Brandeburg | 3a58107 | 2008-08-26 04:27:08 -0700 | [diff] [blame] | 540 | struct ixgbe_rx_buffer *bi; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 541 | unsigned int i; |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 542 | unsigned int bufsz = rx_ring->rx_buf_len + NET_IP_ALIGN; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 543 | |
| 544 | i = rx_ring->next_to_use; |
Jesse Brandeburg | 3a58107 | 2008-08-26 04:27:08 -0700 | [diff] [blame] | 545 | bi = &rx_ring->rx_buffer_info[i]; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 546 | |
| 547 | while (cleaned_count--) { |
| 548 | rx_desc = IXGBE_RX_DESC_ADV(*rx_ring, i); |
| 549 | |
Jesse Brandeburg | 762f4c5 | 2008-09-11 19:58:43 -0700 | [diff] [blame] | 550 | if (!bi->page_dma && |
Jesse Brandeburg | 3a58107 | 2008-08-26 04:27:08 -0700 | [diff] [blame] | 551 | (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED)) { |
Jesse Brandeburg | 3a58107 | 2008-08-26 04:27:08 -0700 | [diff] [blame] | 552 | if (!bi->page) { |
Jesse Brandeburg | 762f4c5 | 2008-09-11 19:58:43 -0700 | [diff] [blame] | 553 | bi->page = alloc_page(GFP_ATOMIC); |
| 554 | if (!bi->page) { |
| 555 | adapter->alloc_rx_page_failed++; |
| 556 | goto no_buffers; |
| 557 | } |
| 558 | bi->page_offset = 0; |
| 559 | } else { |
| 560 | /* use a half page if we're re-using */ |
| 561 | bi->page_offset ^= (PAGE_SIZE / 2); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 562 | } |
Jesse Brandeburg | 762f4c5 | 2008-09-11 19:58:43 -0700 | [diff] [blame] | 563 | |
| 564 | bi->page_dma = pci_map_page(pdev, bi->page, |
| 565 | bi->page_offset, |
| 566 | (PAGE_SIZE / 2), |
| 567 | PCI_DMA_FROMDEVICE); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 568 | } |
| 569 | |
Jesse Brandeburg | 3a58107 | 2008-08-26 04:27:08 -0700 | [diff] [blame] | 570 | if (!bi->skb) { |
Jesse Brandeburg | 5ecc361 | 2008-12-15 01:00:57 -0800 | [diff] [blame] | 571 | struct sk_buff *skb; |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 572 | skb = netdev_alloc_skb(adapter->netdev, bufsz); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 573 | |
| 574 | if (!skb) { |
| 575 | adapter->alloc_rx_buff_failed++; |
| 576 | goto no_buffers; |
| 577 | } |
| 578 | |
| 579 | /* |
| 580 | * Make buffer alignment 2 beyond a 16 byte boundary |
| 581 | * this will result in a 16 byte aligned IP header after |
| 582 | * the 14 byte MAC header is removed |
| 583 | */ |
| 584 | skb_reserve(skb, NET_IP_ALIGN); |
| 585 | |
Jesse Brandeburg | 3a58107 | 2008-08-26 04:27:08 -0700 | [diff] [blame] | 586 | bi->skb = skb; |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 587 | bi->dma = pci_map_single(pdev, skb->data, bufsz, |
Jesse Brandeburg | 3a58107 | 2008-08-26 04:27:08 -0700 | [diff] [blame] | 588 | PCI_DMA_FROMDEVICE); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 589 | } |
| 590 | /* Refresh the desc even if buffer_addrs didn't change because |
| 591 | * each write-back erases this info. */ |
| 592 | if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) { |
Jesse Brandeburg | 3a58107 | 2008-08-26 04:27:08 -0700 | [diff] [blame] | 593 | rx_desc->read.pkt_addr = cpu_to_le64(bi->page_dma); |
| 594 | rx_desc->read.hdr_addr = cpu_to_le64(bi->dma); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 595 | } else { |
Jesse Brandeburg | 3a58107 | 2008-08-26 04:27:08 -0700 | [diff] [blame] | 596 | rx_desc->read.pkt_addr = cpu_to_le64(bi->dma); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 597 | } |
| 598 | |
| 599 | i++; |
| 600 | if (i == rx_ring->count) |
| 601 | i = 0; |
Jesse Brandeburg | 3a58107 | 2008-08-26 04:27:08 -0700 | [diff] [blame] | 602 | bi = &rx_ring->rx_buffer_info[i]; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 603 | } |
Jesse Brandeburg | 7c6e0a4 | 2008-08-26 04:27:16 -0700 | [diff] [blame] | 604 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 605 | no_buffers: |
| 606 | if (rx_ring->next_to_use != i) { |
| 607 | rx_ring->next_to_use = i; |
| 608 | if (i-- == 0) |
| 609 | i = (rx_ring->count - 1); |
| 610 | |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 611 | ixgbe_release_rx_desc(&adapter->hw, rx_ring, i); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 612 | } |
| 613 | } |
| 614 | |
Jesse Brandeburg | 7c6e0a4 | 2008-08-26 04:27:16 -0700 | [diff] [blame] | 615 | static inline u16 ixgbe_get_hdr_info(union ixgbe_adv_rx_desc *rx_desc) |
| 616 | { |
| 617 | return rx_desc->wb.lower.lo_dword.hs_rss.hdr_info; |
| 618 | } |
| 619 | |
| 620 | static inline u16 ixgbe_get_pkt_info(union ixgbe_adv_rx_desc *rx_desc) |
| 621 | { |
| 622 | return rx_desc->wb.lower.lo_dword.hs_rss.pkt_info; |
| 623 | } |
| 624 | |
Herbert Xu | 78b6f4c | 2009-01-18 21:49:45 -0800 | [diff] [blame] | 625 | static bool ixgbe_clean_rx_irq(struct ixgbe_q_vector *q_vector, |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 626 | struct ixgbe_ring *rx_ring, |
| 627 | int *work_done, int work_to_do) |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 628 | { |
Herbert Xu | 78b6f4c | 2009-01-18 21:49:45 -0800 | [diff] [blame] | 629 | struct ixgbe_adapter *adapter = q_vector->adapter; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 630 | struct pci_dev *pdev = adapter->pdev; |
| 631 | union ixgbe_adv_rx_desc *rx_desc, *next_rxd; |
| 632 | struct ixgbe_rx_buffer *rx_buffer_info, *next_buffer; |
| 633 | struct sk_buff *skb; |
| 634 | unsigned int i; |
Jesse Brandeburg | 7c6e0a4 | 2008-08-26 04:27:16 -0700 | [diff] [blame] | 635 | u32 len, staterr; |
Mallikarjuna R Chilakala | 177db6f | 2008-06-18 15:32:19 -0700 | [diff] [blame] | 636 | u16 hdr_info; |
| 637 | bool cleaned = false; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 638 | int cleaned_count = 0; |
Ayyappan Veeraiyan | d2f4fbe | 2008-02-01 15:59:19 -0800 | [diff] [blame] | 639 | unsigned int total_rx_bytes = 0, total_rx_packets = 0; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 640 | |
| 641 | i = rx_ring->next_to_clean; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 642 | rx_desc = IXGBE_RX_DESC_ADV(*rx_ring, i); |
| 643 | staterr = le32_to_cpu(rx_desc->wb.upper.status_error); |
| 644 | rx_buffer_info = &rx_ring->rx_buffer_info[i]; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 645 | |
| 646 | while (staterr & IXGBE_RXD_STAT_DD) { |
Jesse Brandeburg | 7c6e0a4 | 2008-08-26 04:27:16 -0700 | [diff] [blame] | 647 | u32 upper_len = 0; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 648 | if (*work_done >= work_to_do) |
| 649 | break; |
| 650 | (*work_done)++; |
| 651 | |
| 652 | if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) { |
Jesse Brandeburg | 7c6e0a4 | 2008-08-26 04:27:16 -0700 | [diff] [blame] | 653 | hdr_info = le16_to_cpu(ixgbe_get_hdr_info(rx_desc)); |
| 654 | len = (hdr_info & IXGBE_RXDADV_HDRBUFLEN_MASK) >> |
Jesse Brandeburg | 762f4c5 | 2008-09-11 19:58:43 -0700 | [diff] [blame] | 655 | IXGBE_RXDADV_HDRBUFLEN_SHIFT; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 656 | if (hdr_info & IXGBE_RXDADV_SPH) |
| 657 | adapter->rx_hdr_split++; |
| 658 | if (len > IXGBE_RX_HDR_SIZE) |
| 659 | len = IXGBE_RX_HDR_SIZE; |
| 660 | upper_len = le16_to_cpu(rx_desc->wb.upper.length); |
Jesse Brandeburg | 7c6e0a4 | 2008-08-26 04:27:16 -0700 | [diff] [blame] | 661 | } else { |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 662 | len = le16_to_cpu(rx_desc->wb.upper.length); |
Jesse Brandeburg | 7c6e0a4 | 2008-08-26 04:27:16 -0700 | [diff] [blame] | 663 | } |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 664 | |
| 665 | cleaned = true; |
| 666 | skb = rx_buffer_info->skb; |
| 667 | prefetch(skb->data - NET_IP_ALIGN); |
| 668 | rx_buffer_info->skb = NULL; |
| 669 | |
| 670 | if (len && !skb_shinfo(skb)->nr_frags) { |
| 671 | pci_unmap_single(pdev, rx_buffer_info->dma, |
Jesse Brandeburg | 5ecc361 | 2008-12-15 01:00:57 -0800 | [diff] [blame] | 672 | rx_ring->rx_buf_len, |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 673 | PCI_DMA_FROMDEVICE); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 674 | skb_put(skb, len); |
| 675 | } |
| 676 | |
| 677 | if (upper_len) { |
| 678 | pci_unmap_page(pdev, rx_buffer_info->page_dma, |
Jesse Brandeburg | 762f4c5 | 2008-09-11 19:58:43 -0700 | [diff] [blame] | 679 | PAGE_SIZE / 2, PCI_DMA_FROMDEVICE); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 680 | rx_buffer_info->page_dma = 0; |
| 681 | skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags, |
Jesse Brandeburg | 762f4c5 | 2008-09-11 19:58:43 -0700 | [diff] [blame] | 682 | rx_buffer_info->page, |
| 683 | rx_buffer_info->page_offset, |
| 684 | upper_len); |
| 685 | |
| 686 | if ((rx_ring->rx_buf_len > (PAGE_SIZE / 2)) || |
| 687 | (page_count(rx_buffer_info->page) != 1)) |
| 688 | rx_buffer_info->page = NULL; |
| 689 | else |
| 690 | get_page(rx_buffer_info->page); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 691 | |
| 692 | skb->len += upper_len; |
| 693 | skb->data_len += upper_len; |
| 694 | skb->truesize += upper_len; |
| 695 | } |
| 696 | |
| 697 | i++; |
| 698 | if (i == rx_ring->count) |
| 699 | i = 0; |
| 700 | next_buffer = &rx_ring->rx_buffer_info[i]; |
| 701 | |
| 702 | next_rxd = IXGBE_RX_DESC_ADV(*rx_ring, i); |
| 703 | prefetch(next_rxd); |
| 704 | |
| 705 | cleaned_count++; |
| 706 | if (staterr & IXGBE_RXD_STAT_EOP) { |
| 707 | rx_ring->stats.packets++; |
| 708 | rx_ring->stats.bytes += skb->len; |
| 709 | } else { |
| 710 | rx_buffer_info->skb = next_buffer->skb; |
| 711 | rx_buffer_info->dma = next_buffer->dma; |
| 712 | next_buffer->skb = skb; |
Jesse Brandeburg | 762f4c5 | 2008-09-11 19:58:43 -0700 | [diff] [blame] | 713 | next_buffer->dma = 0; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 714 | adapter->non_eop_descs++; |
| 715 | goto next_desc; |
| 716 | } |
| 717 | |
| 718 | if (staterr & IXGBE_RXDADV_ERR_FRAME_ERR_MASK) { |
| 719 | dev_kfree_skb_irq(skb); |
| 720 | goto next_desc; |
| 721 | } |
| 722 | |
| 723 | ixgbe_rx_checksum(adapter, staterr, skb); |
Ayyappan Veeraiyan | d2f4fbe | 2008-02-01 15:59:19 -0800 | [diff] [blame] | 724 | |
| 725 | /* probably a little skewed due to removing CRC */ |
| 726 | total_rx_bytes += skb->len; |
| 727 | total_rx_packets++; |
| 728 | |
Jesse Brandeburg | 74ce8dd | 2008-09-11 20:03:23 -0700 | [diff] [blame] | 729 | skb->protocol = eth_type_trans(skb, adapter->netdev); |
Herbert Xu | 78b6f4c | 2009-01-18 21:49:45 -0800 | [diff] [blame] | 730 | ixgbe_receive_skb(q_vector, skb, staterr, rx_desc); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 731 | |
| 732 | next_desc: |
| 733 | rx_desc->wb.upper.status_error = 0; |
| 734 | |
| 735 | /* return some buffers to hardware, one at a time is too slow */ |
| 736 | if (cleaned_count >= IXGBE_RX_BUFFER_WRITE) { |
| 737 | ixgbe_alloc_rx_buffers(adapter, rx_ring, cleaned_count); |
| 738 | cleaned_count = 0; |
| 739 | } |
| 740 | |
| 741 | /* use prefetched values */ |
| 742 | rx_desc = next_rxd; |
| 743 | rx_buffer_info = next_buffer; |
| 744 | |
| 745 | staterr = le32_to_cpu(rx_desc->wb.upper.status_error); |
Mallikarjuna R Chilakala | 177db6f | 2008-06-18 15:32:19 -0700 | [diff] [blame] | 746 | } |
| 747 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 748 | rx_ring->next_to_clean = i; |
| 749 | cleaned_count = IXGBE_DESC_UNUSED(rx_ring); |
| 750 | |
| 751 | if (cleaned_count) |
| 752 | ixgbe_alloc_rx_buffers(adapter, rx_ring, cleaned_count); |
| 753 | |
Ayyappan Veeraiyan | f494e8f | 2008-03-03 15:03:57 -0800 | [diff] [blame] | 754 | rx_ring->total_packets += total_rx_packets; |
| 755 | rx_ring->total_bytes += total_rx_bytes; |
| 756 | adapter->net_stats.rx_bytes += total_rx_bytes; |
| 757 | adapter->net_stats.rx_packets += total_rx_packets; |
| 758 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 759 | return cleaned; |
| 760 | } |
| 761 | |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 762 | static int ixgbe_clean_rxonly(struct napi_struct *, int); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 763 | /** |
| 764 | * ixgbe_configure_msix - Configure MSI-X hardware |
| 765 | * @adapter: board private structure |
| 766 | * |
| 767 | * ixgbe_configure_msix sets up the hardware to properly generate MSI-X |
| 768 | * interrupts. |
| 769 | **/ |
| 770 | static void ixgbe_configure_msix(struct ixgbe_adapter *adapter) |
| 771 | { |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 772 | struct ixgbe_q_vector *q_vector; |
| 773 | int i, j, q_vectors, v_idx, r_idx; |
| 774 | u32 mask; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 775 | |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 776 | q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS; |
| 777 | |
Jesse Brandeburg | 4df1046 | 2009-03-13 22:15:31 +0000 | [diff] [blame] | 778 | /* |
| 779 | * Populate the IVAR table and set the ITR values to the |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 780 | * corresponding register. |
| 781 | */ |
| 782 | for (v_idx = 0; v_idx < q_vectors; v_idx++) { |
| 783 | q_vector = &adapter->q_vector[v_idx]; |
| 784 | /* XXX for_each_bit(...) */ |
| 785 | r_idx = find_first_bit(q_vector->rxr_idx, |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 786 | adapter->num_rx_queues); |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 787 | |
| 788 | for (i = 0; i < q_vector->rxr_count; i++) { |
| 789 | j = adapter->rx_ring[r_idx].reg_idx; |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 790 | ixgbe_set_ivar(adapter, 0, j, v_idx); |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 791 | r_idx = find_next_bit(q_vector->rxr_idx, |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 792 | adapter->num_rx_queues, |
| 793 | r_idx + 1); |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 794 | } |
| 795 | r_idx = find_first_bit(q_vector->txr_idx, |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 796 | adapter->num_tx_queues); |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 797 | |
| 798 | for (i = 0; i < q_vector->txr_count; i++) { |
| 799 | j = adapter->tx_ring[r_idx].reg_idx; |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 800 | ixgbe_set_ivar(adapter, 1, j, v_idx); |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 801 | r_idx = find_next_bit(q_vector->txr_idx, |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 802 | adapter->num_tx_queues, |
| 803 | r_idx + 1); |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 804 | } |
| 805 | |
Jesse Brandeburg | 30efa5a | 2008-09-11 19:58:14 -0700 | [diff] [blame] | 806 | /* if this is a tx only vector halve the interrupt rate */ |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 807 | if (q_vector->txr_count && !q_vector->rxr_count) |
Jesse Brandeburg | 30efa5a | 2008-09-11 19:58:14 -0700 | [diff] [blame] | 808 | q_vector->eitr = (adapter->eitr_param >> 1); |
Jesse Brandeburg | 509ee93 | 2009-03-13 22:13:28 +0000 | [diff] [blame] | 809 | else if (q_vector->rxr_count) |
Jesse Brandeburg | 30efa5a | 2008-09-11 19:58:14 -0700 | [diff] [blame] | 810 | /* rx only */ |
| 811 | q_vector->eitr = adapter->eitr_param; |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 812 | |
Jesse Brandeburg | 509ee93 | 2009-03-13 22:13:28 +0000 | [diff] [blame] | 813 | /* |
Jesse Brandeburg | 4df1046 | 2009-03-13 22:15:31 +0000 | [diff] [blame] | 814 | * since this is initial set up don't need to call |
Jesse Brandeburg | 509ee93 | 2009-03-13 22:13:28 +0000 | [diff] [blame] | 815 | * ixgbe_write_eitr helper |
| 816 | */ |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 817 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITR(v_idx), |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 818 | EITR_INTS_PER_SEC_TO_REG(q_vector->eitr)); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 819 | } |
| 820 | |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 821 | if (adapter->hw.mac.type == ixgbe_mac_82598EB) |
| 822 | ixgbe_set_ivar(adapter, -1, IXGBE_IVAR_OTHER_CAUSES_INDEX, |
| 823 | v_idx); |
| 824 | else if (adapter->hw.mac.type == ixgbe_mac_82599EB) |
| 825 | ixgbe_set_ivar(adapter, -1, 1, v_idx); |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 826 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITR(v_idx), 1950); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 827 | |
Jesse Brandeburg | 41fb924 | 2008-09-11 19:55:58 -0700 | [diff] [blame] | 828 | /* set up to autoclear timer, and the vectors */ |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 829 | mask = IXGBE_EIMS_ENABLE_MASK; |
Jesse Brandeburg | 41fb924 | 2008-09-11 19:55:58 -0700 | [diff] [blame] | 830 | mask &= ~(IXGBE_EIMS_OTHER | IXGBE_EIMS_LSC); |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 831 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIAC, mask); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 832 | } |
| 833 | |
Ayyappan Veeraiyan | f494e8f | 2008-03-03 15:03:57 -0800 | [diff] [blame] | 834 | enum latency_range { |
| 835 | lowest_latency = 0, |
| 836 | low_latency = 1, |
| 837 | bulk_latency = 2, |
| 838 | latency_invalid = 255 |
| 839 | }; |
| 840 | |
| 841 | /** |
| 842 | * ixgbe_update_itr - update the dynamic ITR value based on statistics |
| 843 | * @adapter: pointer to adapter |
| 844 | * @eitr: eitr setting (ints per sec) to give last timeslice |
| 845 | * @itr_setting: current throttle rate in ints/second |
| 846 | * @packets: the number of packets during this measurement interval |
| 847 | * @bytes: the number of bytes during this measurement interval |
| 848 | * |
| 849 | * Stores a new ITR value based on packets and byte |
| 850 | * counts during the last interrupt. The advantage of per interrupt |
| 851 | * computation is faster updates and more accurate ITR for the current |
| 852 | * traffic pattern. Constants in this function were computed |
| 853 | * based on theoretical maximum wire speed and thresholds were set based |
| 854 | * on testing data as well as attempting to minimize response time |
| 855 | * while increasing bulk throughput. |
| 856 | * this functionality is controlled by the InterruptThrottleRate module |
| 857 | * parameter (see ixgbe_param.c) |
| 858 | **/ |
| 859 | static u8 ixgbe_update_itr(struct ixgbe_adapter *adapter, |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 860 | u32 eitr, u8 itr_setting, |
| 861 | int packets, int bytes) |
Ayyappan Veeraiyan | f494e8f | 2008-03-03 15:03:57 -0800 | [diff] [blame] | 862 | { |
| 863 | unsigned int retval = itr_setting; |
| 864 | u32 timepassed_us; |
| 865 | u64 bytes_perint; |
| 866 | |
| 867 | if (packets == 0) |
| 868 | goto update_itr_done; |
| 869 | |
| 870 | |
| 871 | /* simple throttlerate management |
| 872 | * 0-20MB/s lowest (100000 ints/s) |
| 873 | * 20-100MB/s low (20000 ints/s) |
| 874 | * 100-1249MB/s bulk (8000 ints/s) |
| 875 | */ |
| 876 | /* what was last interrupt timeslice? */ |
| 877 | timepassed_us = 1000000/eitr; |
| 878 | bytes_perint = bytes / timepassed_us; /* bytes/usec */ |
| 879 | |
| 880 | switch (itr_setting) { |
| 881 | case lowest_latency: |
| 882 | if (bytes_perint > adapter->eitr_low) |
| 883 | retval = low_latency; |
| 884 | break; |
| 885 | case low_latency: |
| 886 | if (bytes_perint > adapter->eitr_high) |
| 887 | retval = bulk_latency; |
| 888 | else if (bytes_perint <= adapter->eitr_low) |
| 889 | retval = lowest_latency; |
| 890 | break; |
| 891 | case bulk_latency: |
| 892 | if (bytes_perint <= adapter->eitr_high) |
| 893 | retval = low_latency; |
| 894 | break; |
| 895 | } |
| 896 | |
| 897 | update_itr_done: |
| 898 | return retval; |
| 899 | } |
| 900 | |
Jesse Brandeburg | 509ee93 | 2009-03-13 22:13:28 +0000 | [diff] [blame] | 901 | /** |
| 902 | * ixgbe_write_eitr - write EITR register in hardware specific way |
| 903 | * @adapter: pointer to adapter struct |
| 904 | * @v_idx: vector index into q_vector array |
| 905 | * @itr_reg: new value to be written in *register* format, not ints/s |
| 906 | * |
| 907 | * This function is made to be called by ethtool and by the driver |
| 908 | * when it needs to update EITR registers at runtime. Hardware |
| 909 | * specific quirks/differences are taken care of here. |
| 910 | */ |
| 911 | void ixgbe_write_eitr(struct ixgbe_adapter *adapter, int v_idx, u32 itr_reg) |
| 912 | { |
| 913 | struct ixgbe_hw *hw = &adapter->hw; |
| 914 | if (adapter->hw.mac.type == ixgbe_mac_82598EB) { |
| 915 | /* must write high and low 16 bits to reset counter */ |
| 916 | itr_reg |= (itr_reg << 16); |
| 917 | } else if (adapter->hw.mac.type == ixgbe_mac_82599EB) { |
| 918 | /* |
| 919 | * set the WDIS bit to not clear the timer bits and cause an |
| 920 | * immediate assertion of the interrupt |
| 921 | */ |
| 922 | itr_reg |= IXGBE_EITR_CNT_WDIS; |
| 923 | } |
| 924 | IXGBE_WRITE_REG(hw, IXGBE_EITR(v_idx), itr_reg); |
| 925 | } |
| 926 | |
Ayyappan Veeraiyan | f494e8f | 2008-03-03 15:03:57 -0800 | [diff] [blame] | 927 | static void ixgbe_set_itr_msix(struct ixgbe_q_vector *q_vector) |
| 928 | { |
| 929 | struct ixgbe_adapter *adapter = q_vector->adapter; |
Ayyappan Veeraiyan | f494e8f | 2008-03-03 15:03:57 -0800 | [diff] [blame] | 930 | u32 new_itr; |
| 931 | u8 current_itr, ret_itr; |
| 932 | int i, r_idx, v_idx = ((void *)q_vector - (void *)(adapter->q_vector)) / |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 933 | sizeof(struct ixgbe_q_vector); |
Ayyappan Veeraiyan | f494e8f | 2008-03-03 15:03:57 -0800 | [diff] [blame] | 934 | struct ixgbe_ring *rx_ring, *tx_ring; |
| 935 | |
| 936 | r_idx = find_first_bit(q_vector->txr_idx, adapter->num_tx_queues); |
| 937 | for (i = 0; i < q_vector->txr_count; i++) { |
| 938 | tx_ring = &(adapter->tx_ring[r_idx]); |
| 939 | ret_itr = ixgbe_update_itr(adapter, q_vector->eitr, |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 940 | q_vector->tx_itr, |
| 941 | tx_ring->total_packets, |
| 942 | tx_ring->total_bytes); |
Ayyappan Veeraiyan | f494e8f | 2008-03-03 15:03:57 -0800 | [diff] [blame] | 943 | /* if the result for this queue would decrease interrupt |
| 944 | * rate for this vector then use that result */ |
Jesse Brandeburg | 30efa5a | 2008-09-11 19:58:14 -0700 | [diff] [blame] | 945 | q_vector->tx_itr = ((q_vector->tx_itr > ret_itr) ? |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 946 | q_vector->tx_itr - 1 : ret_itr); |
Ayyappan Veeraiyan | f494e8f | 2008-03-03 15:03:57 -0800 | [diff] [blame] | 947 | r_idx = find_next_bit(q_vector->txr_idx, adapter->num_tx_queues, |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 948 | r_idx + 1); |
Ayyappan Veeraiyan | f494e8f | 2008-03-03 15:03:57 -0800 | [diff] [blame] | 949 | } |
| 950 | |
| 951 | r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues); |
| 952 | for (i = 0; i < q_vector->rxr_count; i++) { |
| 953 | rx_ring = &(adapter->rx_ring[r_idx]); |
| 954 | ret_itr = ixgbe_update_itr(adapter, q_vector->eitr, |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 955 | q_vector->rx_itr, |
| 956 | rx_ring->total_packets, |
| 957 | rx_ring->total_bytes); |
Ayyappan Veeraiyan | f494e8f | 2008-03-03 15:03:57 -0800 | [diff] [blame] | 958 | /* if the result for this queue would decrease interrupt |
| 959 | * rate for this vector then use that result */ |
Jesse Brandeburg | 30efa5a | 2008-09-11 19:58:14 -0700 | [diff] [blame] | 960 | q_vector->rx_itr = ((q_vector->rx_itr > ret_itr) ? |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 961 | q_vector->rx_itr - 1 : ret_itr); |
Ayyappan Veeraiyan | f494e8f | 2008-03-03 15:03:57 -0800 | [diff] [blame] | 962 | r_idx = find_next_bit(q_vector->rxr_idx, adapter->num_rx_queues, |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 963 | r_idx + 1); |
Ayyappan Veeraiyan | f494e8f | 2008-03-03 15:03:57 -0800 | [diff] [blame] | 964 | } |
| 965 | |
Jesse Brandeburg | 30efa5a | 2008-09-11 19:58:14 -0700 | [diff] [blame] | 966 | current_itr = max(q_vector->rx_itr, q_vector->tx_itr); |
Ayyappan Veeraiyan | f494e8f | 2008-03-03 15:03:57 -0800 | [diff] [blame] | 967 | |
| 968 | switch (current_itr) { |
| 969 | /* counts and packets in update_itr are dependent on these numbers */ |
| 970 | case lowest_latency: |
| 971 | new_itr = 100000; |
| 972 | break; |
| 973 | case low_latency: |
| 974 | new_itr = 20000; /* aka hwitr = ~200 */ |
| 975 | break; |
| 976 | case bulk_latency: |
| 977 | default: |
| 978 | new_itr = 8000; |
| 979 | break; |
| 980 | } |
| 981 | |
| 982 | if (new_itr != q_vector->eitr) { |
| 983 | u32 itr_reg; |
Jesse Brandeburg | 509ee93 | 2009-03-13 22:13:28 +0000 | [diff] [blame] | 984 | |
| 985 | /* save the algorithm value here, not the smoothed one */ |
| 986 | q_vector->eitr = new_itr; |
Ayyappan Veeraiyan | f494e8f | 2008-03-03 15:03:57 -0800 | [diff] [blame] | 987 | /* do an exponential smoothing */ |
| 988 | new_itr = ((q_vector->eitr * 90)/100) + ((new_itr * 10)/100); |
Ayyappan Veeraiyan | f494e8f | 2008-03-03 15:03:57 -0800 | [diff] [blame] | 989 | itr_reg = EITR_INTS_PER_SEC_TO_REG(new_itr); |
Jesse Brandeburg | 509ee93 | 2009-03-13 22:13:28 +0000 | [diff] [blame] | 990 | ixgbe_write_eitr(adapter, v_idx, itr_reg); |
Ayyappan Veeraiyan | f494e8f | 2008-03-03 15:03:57 -0800 | [diff] [blame] | 991 | } |
| 992 | |
| 993 | return; |
| 994 | } |
| 995 | |
Jesse Brandeburg | 0befdb3 | 2008-10-31 00:46:40 -0700 | [diff] [blame] | 996 | static void ixgbe_check_fan_failure(struct ixgbe_adapter *adapter, u32 eicr) |
| 997 | { |
| 998 | struct ixgbe_hw *hw = &adapter->hw; |
| 999 | |
| 1000 | if ((adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) && |
| 1001 | (eicr & IXGBE_EICR_GPI_SDP1)) { |
| 1002 | DPRINTK(PROBE, CRIT, "Fan has stopped, replace the adapter\n"); |
| 1003 | /* write to clear the interrupt */ |
| 1004 | IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_GPI_SDP1); |
| 1005 | } |
| 1006 | } |
Jesse Brandeburg | cf8280e | 2008-09-11 19:55:32 -0700 | [diff] [blame] | 1007 | |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 1008 | static void ixgbe_check_sfp_event(struct ixgbe_adapter *adapter, u32 eicr) |
| 1009 | { |
| 1010 | struct ixgbe_hw *hw = &adapter->hw; |
| 1011 | |
| 1012 | if (eicr & IXGBE_EICR_GPI_SDP1) { |
| 1013 | /* Clear the interrupt */ |
| 1014 | IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_GPI_SDP1); |
| 1015 | schedule_work(&adapter->multispeed_fiber_task); |
| 1016 | } else if (eicr & IXGBE_EICR_GPI_SDP2) { |
| 1017 | /* Clear the interrupt */ |
| 1018 | IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_GPI_SDP2); |
| 1019 | schedule_work(&adapter->sfp_config_module_task); |
| 1020 | } else { |
| 1021 | /* Interrupt isn't for us... */ |
| 1022 | return; |
| 1023 | } |
| 1024 | } |
| 1025 | |
Jesse Brandeburg | cf8280e | 2008-09-11 19:55:32 -0700 | [diff] [blame] | 1026 | static void ixgbe_check_lsc(struct ixgbe_adapter *adapter) |
| 1027 | { |
| 1028 | struct ixgbe_hw *hw = &adapter->hw; |
| 1029 | |
| 1030 | adapter->lsc_int++; |
| 1031 | adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE; |
| 1032 | adapter->link_check_timeout = jiffies; |
| 1033 | if (!test_bit(__IXGBE_DOWN, &adapter->state)) { |
| 1034 | IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_EIMC_LSC); |
| 1035 | schedule_work(&adapter->watchdog_task); |
| 1036 | } |
| 1037 | } |
| 1038 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1039 | static irqreturn_t ixgbe_msix_lsc(int irq, void *data) |
| 1040 | { |
| 1041 | struct net_device *netdev = data; |
| 1042 | struct ixgbe_adapter *adapter = netdev_priv(netdev); |
| 1043 | struct ixgbe_hw *hw = &adapter->hw; |
Don Skidmore | 5403750 | 2009-02-21 15:42:56 -0800 | [diff] [blame] | 1044 | u32 eicr; |
| 1045 | |
| 1046 | /* |
| 1047 | * Workaround for Silicon errata. Use clear-by-write instead |
| 1048 | * of clear-by-read. Reading with EICS will return the |
| 1049 | * interrupt causes without clearing, which later be done |
| 1050 | * with the write to EICR. |
| 1051 | */ |
| 1052 | eicr = IXGBE_READ_REG(hw, IXGBE_EICS); |
| 1053 | IXGBE_WRITE_REG(hw, IXGBE_EICR, eicr); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1054 | |
Jesse Brandeburg | cf8280e | 2008-09-11 19:55:32 -0700 | [diff] [blame] | 1055 | if (eicr & IXGBE_EICR_LSC) |
| 1056 | ixgbe_check_lsc(adapter); |
Ayyappan Veeraiyan | d4f8088 | 2008-02-01 15:58:41 -0800 | [diff] [blame] | 1057 | |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 1058 | if (hw->mac.type == ixgbe_mac_82598EB) |
| 1059 | ixgbe_check_fan_failure(adapter, eicr); |
Jesse Brandeburg | 0befdb3 | 2008-10-31 00:46:40 -0700 | [diff] [blame] | 1060 | |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 1061 | if (hw->mac.type == ixgbe_mac_82599EB) |
| 1062 | ixgbe_check_sfp_event(adapter, eicr); |
Ayyappan Veeraiyan | d4f8088 | 2008-02-01 15:58:41 -0800 | [diff] [blame] | 1063 | if (!test_bit(__IXGBE_DOWN, &adapter->state)) |
| 1064 | IXGBE_WRITE_REG(hw, IXGBE_EIMS, IXGBE_EIMS_OTHER); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1065 | |
| 1066 | return IRQ_HANDLED; |
| 1067 | } |
| 1068 | |
| 1069 | static irqreturn_t ixgbe_msix_clean_tx(int irq, void *data) |
| 1070 | { |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 1071 | struct ixgbe_q_vector *q_vector = data; |
| 1072 | struct ixgbe_adapter *adapter = q_vector->adapter; |
Jesse Brandeburg | 3a58107 | 2008-08-26 04:27:08 -0700 | [diff] [blame] | 1073 | struct ixgbe_ring *tx_ring; |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 1074 | int i, r_idx; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1075 | |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 1076 | if (!q_vector->txr_count) |
| 1077 | return IRQ_HANDLED; |
| 1078 | |
| 1079 | r_idx = find_first_bit(q_vector->txr_idx, adapter->num_tx_queues); |
| 1080 | for (i = 0; i < q_vector->txr_count; i++) { |
Jesse Brandeburg | 3a58107 | 2008-08-26 04:27:08 -0700 | [diff] [blame] | 1081 | tx_ring = &(adapter->tx_ring[r_idx]); |
Jeff Garzik | 5dd2d33 | 2008-10-16 05:09:31 -0400 | [diff] [blame] | 1082 | #ifdef CONFIG_IXGBE_DCA |
Jeb Cramer | bd0362d | 2008-03-03 15:04:02 -0800 | [diff] [blame] | 1083 | if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) |
Jesse Brandeburg | 3a58107 | 2008-08-26 04:27:08 -0700 | [diff] [blame] | 1084 | ixgbe_update_tx_dca(adapter, tx_ring); |
Jeb Cramer | bd0362d | 2008-03-03 15:04:02 -0800 | [diff] [blame] | 1085 | #endif |
Jesse Brandeburg | 3a58107 | 2008-08-26 04:27:08 -0700 | [diff] [blame] | 1086 | tx_ring->total_bytes = 0; |
| 1087 | tx_ring->total_packets = 0; |
| 1088 | ixgbe_clean_tx_irq(adapter, tx_ring); |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 1089 | r_idx = find_next_bit(q_vector->txr_idx, adapter->num_tx_queues, |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 1090 | r_idx + 1); |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 1091 | } |
| 1092 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1093 | return IRQ_HANDLED; |
| 1094 | } |
| 1095 | |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 1096 | /** |
| 1097 | * ixgbe_msix_clean_rx - single unshared vector rx clean (all queues) |
| 1098 | * @irq: unused |
| 1099 | * @data: pointer to our q_vector struct for this interrupt vector |
| 1100 | **/ |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1101 | static irqreturn_t ixgbe_msix_clean_rx(int irq, void *data) |
| 1102 | { |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 1103 | struct ixgbe_q_vector *q_vector = data; |
| 1104 | struct ixgbe_adapter *adapter = q_vector->adapter; |
Jesse Brandeburg | 3a58107 | 2008-08-26 04:27:08 -0700 | [diff] [blame] | 1105 | struct ixgbe_ring *rx_ring; |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 1106 | int r_idx; |
Jesse Brandeburg | 30efa5a | 2008-09-11 19:58:14 -0700 | [diff] [blame] | 1107 | int i; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1108 | |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 1109 | r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues); |
Jesse Brandeburg | 30efa5a | 2008-09-11 19:58:14 -0700 | [diff] [blame] | 1110 | for (i = 0; i < q_vector->rxr_count; i++) { |
| 1111 | rx_ring = &(adapter->rx_ring[r_idx]); |
| 1112 | rx_ring->total_bytes = 0; |
| 1113 | rx_ring->total_packets = 0; |
| 1114 | r_idx = find_next_bit(q_vector->rxr_idx, adapter->num_rx_queues, |
| 1115 | r_idx + 1); |
| 1116 | } |
| 1117 | |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 1118 | if (!q_vector->rxr_count) |
| 1119 | return IRQ_HANDLED; |
| 1120 | |
Jesse Brandeburg | 30efa5a | 2008-09-11 19:58:14 -0700 | [diff] [blame] | 1121 | r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues); |
Jesse Brandeburg | 3a58107 | 2008-08-26 04:27:08 -0700 | [diff] [blame] | 1122 | rx_ring = &(adapter->rx_ring[r_idx]); |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 1123 | /* disable interrupts on this vector only */ |
Jesse Brandeburg | 3a58107 | 2008-08-26 04:27:08 -0700 | [diff] [blame] | 1124 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, rx_ring->v_idx); |
Ben Hutchings | 288379f | 2009-01-19 16:43:59 -0800 | [diff] [blame] | 1125 | napi_schedule(&q_vector->napi); |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 1126 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1127 | return IRQ_HANDLED; |
| 1128 | } |
| 1129 | |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 1130 | static irqreturn_t ixgbe_msix_clean_many(int irq, void *data) |
| 1131 | { |
| 1132 | ixgbe_msix_clean_rx(irq, data); |
| 1133 | ixgbe_msix_clean_tx(irq, data); |
| 1134 | |
| 1135 | return IRQ_HANDLED; |
| 1136 | } |
| 1137 | |
| 1138 | /** |
| 1139 | * ixgbe_clean_rxonly - msix (aka one shot) rx clean routine |
| 1140 | * @napi: napi struct with our devices info in it |
| 1141 | * @budget: amount of work driver is allowed to do this pass, in packets |
| 1142 | * |
Jesse Brandeburg | f084827 | 2008-09-11 19:59:42 -0700 | [diff] [blame] | 1143 | * This function is optimized for cleaning one queue only on a single |
| 1144 | * q_vector!!! |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 1145 | **/ |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1146 | static int ixgbe_clean_rxonly(struct napi_struct *napi, int budget) |
| 1147 | { |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 1148 | struct ixgbe_q_vector *q_vector = |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 1149 | container_of(napi, struct ixgbe_q_vector, napi); |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 1150 | struct ixgbe_adapter *adapter = q_vector->adapter; |
Jesse Brandeburg | f084827 | 2008-09-11 19:59:42 -0700 | [diff] [blame] | 1151 | struct ixgbe_ring *rx_ring = NULL; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1152 | int work_done = 0; |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 1153 | long r_idx; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1154 | |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 1155 | r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues); |
Jesse Brandeburg | 3a58107 | 2008-08-26 04:27:08 -0700 | [diff] [blame] | 1156 | rx_ring = &(adapter->rx_ring[r_idx]); |
Jeff Garzik | 5dd2d33 | 2008-10-16 05:09:31 -0400 | [diff] [blame] | 1157 | #ifdef CONFIG_IXGBE_DCA |
Jeb Cramer | bd0362d | 2008-03-03 15:04:02 -0800 | [diff] [blame] | 1158 | if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) |
Jesse Brandeburg | 3a58107 | 2008-08-26 04:27:08 -0700 | [diff] [blame] | 1159 | ixgbe_update_rx_dca(adapter, rx_ring); |
Jeb Cramer | bd0362d | 2008-03-03 15:04:02 -0800 | [diff] [blame] | 1160 | #endif |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1161 | |
Herbert Xu | 78b6f4c | 2009-01-18 21:49:45 -0800 | [diff] [blame] | 1162 | ixgbe_clean_rx_irq(q_vector, rx_ring, &work_done, budget); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1163 | |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 1164 | /* If all Rx work done, exit the polling mode */ |
| 1165 | if (work_done < budget) { |
Ben Hutchings | 288379f | 2009-01-19 16:43:59 -0800 | [diff] [blame] | 1166 | napi_complete(napi); |
Jesse Brandeburg | 509ee93 | 2009-03-13 22:13:28 +0000 | [diff] [blame] | 1167 | if (adapter->itr_setting & 1) |
Ayyappan Veeraiyan | f494e8f | 2008-03-03 15:03:57 -0800 | [diff] [blame] | 1168 | ixgbe_set_itr_msix(q_vector); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1169 | if (!test_bit(__IXGBE_DOWN, &adapter->state)) |
Jesse Brandeburg | 3a58107 | 2008-08-26 04:27:08 -0700 | [diff] [blame] | 1170 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS, rx_ring->v_idx); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1171 | } |
| 1172 | |
| 1173 | return work_done; |
| 1174 | } |
| 1175 | |
Jesse Brandeburg | f084827 | 2008-09-11 19:59:42 -0700 | [diff] [blame] | 1176 | /** |
| 1177 | * ixgbe_clean_rxonly_many - msix (aka one shot) rx clean routine |
| 1178 | * @napi: napi struct with our devices info in it |
| 1179 | * @budget: amount of work driver is allowed to do this pass, in packets |
| 1180 | * |
| 1181 | * This function will clean more than one rx queue associated with a |
| 1182 | * q_vector. |
| 1183 | **/ |
| 1184 | static int ixgbe_clean_rxonly_many(struct napi_struct *napi, int budget) |
| 1185 | { |
| 1186 | struct ixgbe_q_vector *q_vector = |
| 1187 | container_of(napi, struct ixgbe_q_vector, napi); |
| 1188 | struct ixgbe_adapter *adapter = q_vector->adapter; |
Jesse Brandeburg | f084827 | 2008-09-11 19:59:42 -0700 | [diff] [blame] | 1189 | struct ixgbe_ring *rx_ring = NULL; |
| 1190 | int work_done = 0, i; |
| 1191 | long r_idx; |
| 1192 | u16 enable_mask = 0; |
| 1193 | |
| 1194 | /* attempt to distribute budget to each queue fairly, but don't allow |
| 1195 | * the budget to go below 1 because we'll exit polling */ |
| 1196 | budget /= (q_vector->rxr_count ?: 1); |
| 1197 | budget = max(budget, 1); |
| 1198 | r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues); |
| 1199 | for (i = 0; i < q_vector->rxr_count; i++) { |
| 1200 | rx_ring = &(adapter->rx_ring[r_idx]); |
Jeff Garzik | 5dd2d33 | 2008-10-16 05:09:31 -0400 | [diff] [blame] | 1201 | #ifdef CONFIG_IXGBE_DCA |
Jesse Brandeburg | f084827 | 2008-09-11 19:59:42 -0700 | [diff] [blame] | 1202 | if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) |
| 1203 | ixgbe_update_rx_dca(adapter, rx_ring); |
| 1204 | #endif |
Herbert Xu | 78b6f4c | 2009-01-18 21:49:45 -0800 | [diff] [blame] | 1205 | ixgbe_clean_rx_irq(q_vector, rx_ring, &work_done, budget); |
Jesse Brandeburg | f084827 | 2008-09-11 19:59:42 -0700 | [diff] [blame] | 1206 | enable_mask |= rx_ring->v_idx; |
| 1207 | r_idx = find_next_bit(q_vector->rxr_idx, adapter->num_rx_queues, |
| 1208 | r_idx + 1); |
| 1209 | } |
| 1210 | |
| 1211 | r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues); |
| 1212 | rx_ring = &(adapter->rx_ring[r_idx]); |
| 1213 | /* If all Rx work done, exit the polling mode */ |
Jesse Brandeburg | 7f82187 | 2008-09-11 20:00:16 -0700 | [diff] [blame] | 1214 | if (work_done < budget) { |
Ben Hutchings | 288379f | 2009-01-19 16:43:59 -0800 | [diff] [blame] | 1215 | napi_complete(napi); |
Jesse Brandeburg | 509ee93 | 2009-03-13 22:13:28 +0000 | [diff] [blame] | 1216 | if (adapter->itr_setting & 1) |
Jesse Brandeburg | f084827 | 2008-09-11 19:59:42 -0700 | [diff] [blame] | 1217 | ixgbe_set_itr_msix(q_vector); |
| 1218 | if (!test_bit(__IXGBE_DOWN, &adapter->state)) |
| 1219 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS, enable_mask); |
| 1220 | return 0; |
| 1221 | } |
| 1222 | |
| 1223 | return work_done; |
| 1224 | } |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 1225 | static inline void map_vector_to_rxq(struct ixgbe_adapter *a, int v_idx, |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 1226 | int r_idx) |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1227 | { |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 1228 | a->q_vector[v_idx].adapter = a; |
| 1229 | set_bit(r_idx, a->q_vector[v_idx].rxr_idx); |
| 1230 | a->q_vector[v_idx].rxr_count++; |
| 1231 | a->rx_ring[r_idx].v_idx = 1 << v_idx; |
| 1232 | } |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1233 | |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 1234 | static inline void map_vector_to_txq(struct ixgbe_adapter *a, int v_idx, |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 1235 | int r_idx) |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 1236 | { |
| 1237 | a->q_vector[v_idx].adapter = a; |
| 1238 | set_bit(r_idx, a->q_vector[v_idx].txr_idx); |
| 1239 | a->q_vector[v_idx].txr_count++; |
| 1240 | a->tx_ring[r_idx].v_idx = 1 << v_idx; |
| 1241 | } |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1242 | |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 1243 | /** |
| 1244 | * ixgbe_map_rings_to_vectors - Maps descriptor rings to vectors |
| 1245 | * @adapter: board private structure to initialize |
| 1246 | * @vectors: allotted vector count for descriptor rings |
| 1247 | * |
| 1248 | * This function maps descriptor rings to the queue-specific vectors |
| 1249 | * we were allotted through the MSI-X enabling code. Ideally, we'd have |
| 1250 | * one vector per ring/queue, but on a constrained vector budget, we |
| 1251 | * group the rings as "efficiently" as possible. You would add new |
| 1252 | * mapping configurations in here. |
| 1253 | **/ |
| 1254 | static int ixgbe_map_rings_to_vectors(struct ixgbe_adapter *adapter, |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 1255 | int vectors) |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 1256 | { |
| 1257 | int v_start = 0; |
| 1258 | int rxr_idx = 0, txr_idx = 0; |
| 1259 | int rxr_remaining = adapter->num_rx_queues; |
| 1260 | int txr_remaining = adapter->num_tx_queues; |
| 1261 | int i, j; |
| 1262 | int rqpv, tqpv; |
| 1263 | int err = 0; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1264 | |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 1265 | /* No mapping required if MSI-X is disabled. */ |
| 1266 | if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED)) |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1267 | goto out; |
| 1268 | |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 1269 | /* |
| 1270 | * The ideal configuration... |
| 1271 | * We have enough vectors to map one per queue. |
| 1272 | */ |
| 1273 | if (vectors == adapter->num_rx_queues + adapter->num_tx_queues) { |
| 1274 | for (; rxr_idx < rxr_remaining; v_start++, rxr_idx++) |
| 1275 | map_vector_to_rxq(adapter, v_start, rxr_idx); |
| 1276 | |
| 1277 | for (; txr_idx < txr_remaining; v_start++, txr_idx++) |
| 1278 | map_vector_to_txq(adapter, v_start, txr_idx); |
| 1279 | |
| 1280 | goto out; |
| 1281 | } |
| 1282 | |
| 1283 | /* |
| 1284 | * If we don't have enough vectors for a 1-to-1 |
| 1285 | * mapping, we'll have to group them so there are |
| 1286 | * multiple queues per vector. |
| 1287 | */ |
| 1288 | /* Re-adjusting *qpv takes care of the remainder. */ |
| 1289 | for (i = v_start; i < vectors; i++) { |
| 1290 | rqpv = DIV_ROUND_UP(rxr_remaining, vectors - i); |
| 1291 | for (j = 0; j < rqpv; j++) { |
| 1292 | map_vector_to_rxq(adapter, i, rxr_idx); |
| 1293 | rxr_idx++; |
| 1294 | rxr_remaining--; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1295 | } |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1296 | } |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 1297 | for (i = v_start; i < vectors; i++) { |
| 1298 | tqpv = DIV_ROUND_UP(txr_remaining, vectors - i); |
| 1299 | for (j = 0; j < tqpv; j++) { |
| 1300 | map_vector_to_txq(adapter, i, txr_idx); |
| 1301 | txr_idx++; |
| 1302 | txr_remaining--; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1303 | } |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1304 | } |
| 1305 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1306 | out: |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1307 | return err; |
| 1308 | } |
| 1309 | |
| 1310 | /** |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 1311 | * ixgbe_request_msix_irqs - Initialize MSI-X interrupts |
| 1312 | * @adapter: board private structure |
| 1313 | * |
| 1314 | * ixgbe_request_msix_irqs allocates MSI-X vectors and requests |
| 1315 | * interrupts from the kernel. |
| 1316 | **/ |
| 1317 | static int ixgbe_request_msix_irqs(struct ixgbe_adapter *adapter) |
| 1318 | { |
| 1319 | struct net_device *netdev = adapter->netdev; |
| 1320 | irqreturn_t (*handler)(int, void *); |
| 1321 | int i, vector, q_vectors, err; |
Robert Olsson | cb13fc2 | 2008-11-25 16:43:52 -0800 | [diff] [blame] | 1322 | int ri=0, ti=0; |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 1323 | |
| 1324 | /* Decrement for Other and TCP Timer vectors */ |
| 1325 | q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS; |
| 1326 | |
| 1327 | /* Map the Tx/Rx rings to the vectors we were allotted. */ |
| 1328 | err = ixgbe_map_rings_to_vectors(adapter, q_vectors); |
| 1329 | if (err) |
| 1330 | goto out; |
| 1331 | |
| 1332 | #define SET_HANDLER(_v) ((!(_v)->rxr_count) ? &ixgbe_msix_clean_tx : \ |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 1333 | (!(_v)->txr_count) ? &ixgbe_msix_clean_rx : \ |
| 1334 | &ixgbe_msix_clean_many) |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 1335 | for (vector = 0; vector < q_vectors; vector++) { |
| 1336 | handler = SET_HANDLER(&adapter->q_vector[vector]); |
Robert Olsson | cb13fc2 | 2008-11-25 16:43:52 -0800 | [diff] [blame] | 1337 | |
| 1338 | if(handler == &ixgbe_msix_clean_rx) { |
| 1339 | sprintf(adapter->name[vector], "%s-%s-%d", |
| 1340 | netdev->name, "rx", ri++); |
| 1341 | } |
| 1342 | else if(handler == &ixgbe_msix_clean_tx) { |
| 1343 | sprintf(adapter->name[vector], "%s-%s-%d", |
| 1344 | netdev->name, "tx", ti++); |
| 1345 | } |
| 1346 | else |
| 1347 | sprintf(adapter->name[vector], "%s-%s-%d", |
| 1348 | netdev->name, "TxRx", vector); |
| 1349 | |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 1350 | err = request_irq(adapter->msix_entries[vector].vector, |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 1351 | handler, 0, adapter->name[vector], |
| 1352 | &(adapter->q_vector[vector])); |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 1353 | if (err) { |
| 1354 | DPRINTK(PROBE, ERR, |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 1355 | "request_irq failed for MSIX interrupt " |
| 1356 | "Error: %d\n", err); |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 1357 | goto free_queue_irqs; |
| 1358 | } |
| 1359 | } |
| 1360 | |
| 1361 | sprintf(adapter->name[vector], "%s:lsc", netdev->name); |
| 1362 | err = request_irq(adapter->msix_entries[vector].vector, |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 1363 | &ixgbe_msix_lsc, 0, adapter->name[vector], netdev); |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 1364 | if (err) { |
| 1365 | DPRINTK(PROBE, ERR, |
| 1366 | "request_irq for msix_lsc failed: %d\n", err); |
| 1367 | goto free_queue_irqs; |
| 1368 | } |
| 1369 | |
| 1370 | return 0; |
| 1371 | |
| 1372 | free_queue_irqs: |
| 1373 | for (i = vector - 1; i >= 0; i--) |
| 1374 | free_irq(adapter->msix_entries[--vector].vector, |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 1375 | &(adapter->q_vector[i])); |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 1376 | adapter->flags &= ~IXGBE_FLAG_MSIX_ENABLED; |
| 1377 | pci_disable_msix(adapter->pdev); |
| 1378 | kfree(adapter->msix_entries); |
| 1379 | adapter->msix_entries = NULL; |
| 1380 | out: |
| 1381 | return err; |
| 1382 | } |
| 1383 | |
Ayyappan Veeraiyan | f494e8f | 2008-03-03 15:03:57 -0800 | [diff] [blame] | 1384 | static void ixgbe_set_itr(struct ixgbe_adapter *adapter) |
| 1385 | { |
Ayyappan Veeraiyan | f494e8f | 2008-03-03 15:03:57 -0800 | [diff] [blame] | 1386 | struct ixgbe_q_vector *q_vector = adapter->q_vector; |
| 1387 | u8 current_itr; |
| 1388 | u32 new_itr = q_vector->eitr; |
| 1389 | struct ixgbe_ring *rx_ring = &adapter->rx_ring[0]; |
| 1390 | struct ixgbe_ring *tx_ring = &adapter->tx_ring[0]; |
| 1391 | |
Jesse Brandeburg | 30efa5a | 2008-09-11 19:58:14 -0700 | [diff] [blame] | 1392 | q_vector->tx_itr = ixgbe_update_itr(adapter, new_itr, |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 1393 | q_vector->tx_itr, |
| 1394 | tx_ring->total_packets, |
| 1395 | tx_ring->total_bytes); |
Jesse Brandeburg | 30efa5a | 2008-09-11 19:58:14 -0700 | [diff] [blame] | 1396 | q_vector->rx_itr = ixgbe_update_itr(adapter, new_itr, |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 1397 | q_vector->rx_itr, |
| 1398 | rx_ring->total_packets, |
| 1399 | rx_ring->total_bytes); |
Ayyappan Veeraiyan | f494e8f | 2008-03-03 15:03:57 -0800 | [diff] [blame] | 1400 | |
Jesse Brandeburg | 30efa5a | 2008-09-11 19:58:14 -0700 | [diff] [blame] | 1401 | current_itr = max(q_vector->rx_itr, q_vector->tx_itr); |
Ayyappan Veeraiyan | f494e8f | 2008-03-03 15:03:57 -0800 | [diff] [blame] | 1402 | |
| 1403 | switch (current_itr) { |
| 1404 | /* counts and packets in update_itr are dependent on these numbers */ |
| 1405 | case lowest_latency: |
| 1406 | new_itr = 100000; |
| 1407 | break; |
| 1408 | case low_latency: |
| 1409 | new_itr = 20000; /* aka hwitr = ~200 */ |
| 1410 | break; |
| 1411 | case bulk_latency: |
| 1412 | new_itr = 8000; |
| 1413 | break; |
| 1414 | default: |
| 1415 | break; |
| 1416 | } |
| 1417 | |
| 1418 | if (new_itr != q_vector->eitr) { |
| 1419 | u32 itr_reg; |
Jesse Brandeburg | 509ee93 | 2009-03-13 22:13:28 +0000 | [diff] [blame] | 1420 | |
| 1421 | /* save the algorithm value here, not the smoothed one */ |
| 1422 | q_vector->eitr = new_itr; |
Ayyappan Veeraiyan | f494e8f | 2008-03-03 15:03:57 -0800 | [diff] [blame] | 1423 | /* do an exponential smoothing */ |
| 1424 | new_itr = ((q_vector->eitr * 90)/100) + ((new_itr * 10)/100); |
Ayyappan Veeraiyan | f494e8f | 2008-03-03 15:03:57 -0800 | [diff] [blame] | 1425 | itr_reg = EITR_INTS_PER_SEC_TO_REG(new_itr); |
Jesse Brandeburg | 509ee93 | 2009-03-13 22:13:28 +0000 | [diff] [blame] | 1426 | ixgbe_write_eitr(adapter, 0, itr_reg); |
Ayyappan Veeraiyan | f494e8f | 2008-03-03 15:03:57 -0800 | [diff] [blame] | 1427 | } |
| 1428 | |
| 1429 | return; |
| 1430 | } |
| 1431 | |
Alexey Dobriyan | 79aefa4 | 2008-11-19 14:17:02 -0800 | [diff] [blame] | 1432 | /** |
Alexey Dobriyan | 79aefa4 | 2008-11-19 14:17:02 -0800 | [diff] [blame] | 1433 | * ixgbe_irq_enable - Enable default interrupt generation settings |
| 1434 | * @adapter: board private structure |
| 1435 | **/ |
| 1436 | static inline void ixgbe_irq_enable(struct ixgbe_adapter *adapter) |
| 1437 | { |
| 1438 | u32 mask; |
| 1439 | mask = IXGBE_EIMS_ENABLE_MASK; |
David S. Miller | 6ab33d5 | 2008-11-20 16:44:00 -0800 | [diff] [blame] | 1440 | if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) |
| 1441 | mask |= IXGBE_EIMS_GPI_SDP1; |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 1442 | if (adapter->hw.mac.type == ixgbe_mac_82599EB) { |
Jesse Brandeburg | 2a41ff8 | 2009-03-13 22:14:30 +0000 | [diff] [blame] | 1443 | mask |= IXGBE_EIMS_ECC; |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 1444 | mask |= IXGBE_EIMS_GPI_SDP1; |
| 1445 | mask |= IXGBE_EIMS_GPI_SDP2; |
| 1446 | } |
| 1447 | |
Alexey Dobriyan | 79aefa4 | 2008-11-19 14:17:02 -0800 | [diff] [blame] | 1448 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS, mask); |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 1449 | if (adapter->hw.mac.type == ixgbe_mac_82599EB) { |
| 1450 | /* enable the rest of the queue vectors */ |
| 1451 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS_EX(1), |
| 1452 | (IXGBE_EIMS_RTX_QUEUE << 16)); |
| 1453 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS_EX(2), |
| 1454 | ((IXGBE_EIMS_RTX_QUEUE << 16) | |
| 1455 | IXGBE_EIMS_RTX_QUEUE)); |
| 1456 | } |
Alexey Dobriyan | 79aefa4 | 2008-11-19 14:17:02 -0800 | [diff] [blame] | 1457 | IXGBE_WRITE_FLUSH(&adapter->hw); |
| 1458 | } |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 1459 | |
| 1460 | /** |
| 1461 | * ixgbe_intr - legacy mode Interrupt Handler |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1462 | * @irq: interrupt number |
| 1463 | * @data: pointer to a network interface device structure |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1464 | **/ |
| 1465 | static irqreturn_t ixgbe_intr(int irq, void *data) |
| 1466 | { |
| 1467 | struct net_device *netdev = data; |
| 1468 | struct ixgbe_adapter *adapter = netdev_priv(netdev); |
| 1469 | struct ixgbe_hw *hw = &adapter->hw; |
| 1470 | u32 eicr; |
| 1471 | |
Don Skidmore | 5403750 | 2009-02-21 15:42:56 -0800 | [diff] [blame] | 1472 | /* |
| 1473 | * Workaround for silicon errata. Mask the interrupts |
| 1474 | * before the read of EICR. |
| 1475 | */ |
| 1476 | IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_IRQ_CLEAR_MASK); |
| 1477 | |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 1478 | /* for NAPI, using EIAM to auto-mask tx/rx interrupt bits on read |
| 1479 | * therefore no explict interrupt disable is necessary */ |
| 1480 | eicr = IXGBE_READ_REG(hw, IXGBE_EICR); |
Jesse Brandeburg | f47cf66 | 2008-09-11 19:56:14 -0700 | [diff] [blame] | 1481 | if (!eicr) { |
| 1482 | /* shared interrupt alert! |
| 1483 | * make sure interrupts are enabled because the read will |
| 1484 | * have disabled interrupts due to EIAM */ |
| 1485 | ixgbe_irq_enable(adapter); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1486 | return IRQ_NONE; /* Not our interrupt */ |
Jesse Brandeburg | f47cf66 | 2008-09-11 19:56:14 -0700 | [diff] [blame] | 1487 | } |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1488 | |
Jesse Brandeburg | cf8280e | 2008-09-11 19:55:32 -0700 | [diff] [blame] | 1489 | if (eicr & IXGBE_EICR_LSC) |
| 1490 | ixgbe_check_lsc(adapter); |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 1491 | |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 1492 | if (hw->mac.type == ixgbe_mac_82599EB) |
| 1493 | ixgbe_check_sfp_event(adapter, eicr); |
| 1494 | |
Jesse Brandeburg | 0befdb3 | 2008-10-31 00:46:40 -0700 | [diff] [blame] | 1495 | ixgbe_check_fan_failure(adapter, eicr); |
| 1496 | |
Ben Hutchings | 288379f | 2009-01-19 16:43:59 -0800 | [diff] [blame] | 1497 | if (napi_schedule_prep(&adapter->q_vector[0].napi)) { |
Ayyappan Veeraiyan | f494e8f | 2008-03-03 15:03:57 -0800 | [diff] [blame] | 1498 | adapter->tx_ring[0].total_packets = 0; |
| 1499 | adapter->tx_ring[0].total_bytes = 0; |
| 1500 | adapter->rx_ring[0].total_packets = 0; |
| 1501 | adapter->rx_ring[0].total_bytes = 0; |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 1502 | /* would disable interrupts here but EIAM disabled it */ |
Ben Hutchings | 288379f | 2009-01-19 16:43:59 -0800 | [diff] [blame] | 1503 | __napi_schedule(&adapter->q_vector[0].napi); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1504 | } |
| 1505 | |
| 1506 | return IRQ_HANDLED; |
| 1507 | } |
| 1508 | |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 1509 | static inline void ixgbe_reset_q_vectors(struct ixgbe_adapter *adapter) |
| 1510 | { |
| 1511 | int i, q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS; |
| 1512 | |
| 1513 | for (i = 0; i < q_vectors; i++) { |
| 1514 | struct ixgbe_q_vector *q_vector = &adapter->q_vector[i]; |
| 1515 | bitmap_zero(q_vector->rxr_idx, MAX_RX_QUEUES); |
| 1516 | bitmap_zero(q_vector->txr_idx, MAX_TX_QUEUES); |
| 1517 | q_vector->rxr_count = 0; |
| 1518 | q_vector->txr_count = 0; |
| 1519 | } |
| 1520 | } |
| 1521 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1522 | /** |
| 1523 | * ixgbe_request_irq - initialize interrupts |
| 1524 | * @adapter: board private structure |
| 1525 | * |
| 1526 | * Attempts to configure interrupts using the best available |
| 1527 | * capabilities of the hardware and kernel. |
| 1528 | **/ |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 1529 | static int ixgbe_request_irq(struct ixgbe_adapter *adapter) |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1530 | { |
| 1531 | struct net_device *netdev = adapter->netdev; |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 1532 | int err; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1533 | |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 1534 | if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) { |
| 1535 | err = ixgbe_request_msix_irqs(adapter); |
| 1536 | } else if (adapter->flags & IXGBE_FLAG_MSI_ENABLED) { |
| 1537 | err = request_irq(adapter->pdev->irq, &ixgbe_intr, 0, |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 1538 | netdev->name, netdev); |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 1539 | } else { |
| 1540 | err = request_irq(adapter->pdev->irq, &ixgbe_intr, IRQF_SHARED, |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 1541 | netdev->name, netdev); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1542 | } |
| 1543 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1544 | if (err) |
| 1545 | DPRINTK(PROBE, ERR, "request_irq failed, Error %d\n", err); |
| 1546 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1547 | return err; |
| 1548 | } |
| 1549 | |
| 1550 | static void ixgbe_free_irq(struct ixgbe_adapter *adapter) |
| 1551 | { |
| 1552 | struct net_device *netdev = adapter->netdev; |
| 1553 | |
| 1554 | if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) { |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 1555 | int i, q_vectors; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1556 | |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 1557 | q_vectors = adapter->num_msix_vectors; |
| 1558 | |
| 1559 | i = q_vectors - 1; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1560 | free_irq(adapter->msix_entries[i].vector, netdev); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1561 | |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 1562 | i--; |
| 1563 | for (; i >= 0; i--) { |
| 1564 | free_irq(adapter->msix_entries[i].vector, |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 1565 | &(adapter->q_vector[i])); |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 1566 | } |
| 1567 | |
| 1568 | ixgbe_reset_q_vectors(adapter); |
| 1569 | } else { |
| 1570 | free_irq(adapter->pdev->irq, netdev); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1571 | } |
| 1572 | } |
| 1573 | |
| 1574 | /** |
Jesse Brandeburg | 22d5a71 | 2009-03-19 01:24:04 +0000 | [diff] [blame] | 1575 | * ixgbe_irq_disable - Mask off interrupt generation on the NIC |
| 1576 | * @adapter: board private structure |
| 1577 | **/ |
| 1578 | static inline void ixgbe_irq_disable(struct ixgbe_adapter *adapter) |
| 1579 | { |
| 1580 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, ~0); |
| 1581 | if (adapter->hw.mac.type == ixgbe_mac_82599EB) { |
| 1582 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC_EX(1), ~0); |
| 1583 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC_EX(2), ~0); |
| 1584 | } |
| 1585 | IXGBE_WRITE_FLUSH(&adapter->hw); |
| 1586 | if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) { |
| 1587 | int i; |
| 1588 | for (i = 0; i < adapter->num_msix_vectors; i++) |
| 1589 | synchronize_irq(adapter->msix_entries[i].vector); |
| 1590 | } else { |
| 1591 | synchronize_irq(adapter->pdev->irq); |
| 1592 | } |
| 1593 | } |
| 1594 | |
| 1595 | static inline void ixgbe_irq_enable_queues(struct ixgbe_adapter *adapter) |
| 1596 | { |
| 1597 | u32 mask = IXGBE_EIMS_RTX_QUEUE; |
| 1598 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS, mask); |
| 1599 | if (adapter->hw.mac.type == ixgbe_mac_82599EB) { |
| 1600 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS_EX(1), mask << 16); |
| 1601 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS_EX(2), |
| 1602 | (mask << 16 | mask)); |
| 1603 | } |
| 1604 | /* skip the flush */ |
| 1605 | } |
| 1606 | |
| 1607 | /** |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1608 | * ixgbe_configure_msi_and_legacy - Initialize PIN (INTA...) and MSI interrupts |
| 1609 | * |
| 1610 | **/ |
| 1611 | static void ixgbe_configure_msi_and_legacy(struct ixgbe_adapter *adapter) |
| 1612 | { |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1613 | struct ixgbe_hw *hw = &adapter->hw; |
| 1614 | |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 1615 | IXGBE_WRITE_REG(hw, IXGBE_EITR(0), |
Jesse Brandeburg | 30efa5a | 2008-09-11 19:58:14 -0700 | [diff] [blame] | 1616 | EITR_INTS_PER_SEC_TO_REG(adapter->eitr_param)); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1617 | |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 1618 | ixgbe_set_ivar(adapter, 0, 0, 0); |
| 1619 | ixgbe_set_ivar(adapter, 1, 0, 0); |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 1620 | |
| 1621 | map_vector_to_rxq(adapter, 0, 0); |
| 1622 | map_vector_to_txq(adapter, 0, 0); |
| 1623 | |
| 1624 | DPRINTK(HW, INFO, "Legacy interrupt IVAR setup done\n"); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1625 | } |
| 1626 | |
| 1627 | /** |
Jesse Brandeburg | 3a58107 | 2008-08-26 04:27:08 -0700 | [diff] [blame] | 1628 | * ixgbe_configure_tx - Configure 8259x Transmit Unit after Reset |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1629 | * @adapter: board private structure |
| 1630 | * |
| 1631 | * Configure the Tx unit of the MAC after a reset. |
| 1632 | **/ |
| 1633 | static void ixgbe_configure_tx(struct ixgbe_adapter *adapter) |
| 1634 | { |
Peter P Waskiewicz Jr | 12207e4 | 2009-02-06 21:47:24 -0800 | [diff] [blame] | 1635 | u64 tdba; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1636 | struct ixgbe_hw *hw = &adapter->hw; |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 1637 | u32 i, j, tdlen, txctrl; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1638 | |
| 1639 | /* Setup the HW Tx Head and Tail descriptor pointers */ |
| 1640 | for (i = 0; i < adapter->num_tx_queues; i++) { |
Jesse Brandeburg | e01c31a | 2008-08-26 04:27:13 -0700 | [diff] [blame] | 1641 | struct ixgbe_ring *ring = &adapter->tx_ring[i]; |
| 1642 | j = ring->reg_idx; |
| 1643 | tdba = ring->dma; |
| 1644 | tdlen = ring->count * sizeof(union ixgbe_adv_tx_desc); |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 1645 | IXGBE_WRITE_REG(hw, IXGBE_TDBAL(j), |
Yang Hongyang | 284901a | 2009-04-06 19:01:15 -0700 | [diff] [blame] | 1646 | (tdba & DMA_BIT_MASK(32))); |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 1647 | IXGBE_WRITE_REG(hw, IXGBE_TDBAH(j), (tdba >> 32)); |
| 1648 | IXGBE_WRITE_REG(hw, IXGBE_TDLEN(j), tdlen); |
| 1649 | IXGBE_WRITE_REG(hw, IXGBE_TDH(j), 0); |
| 1650 | IXGBE_WRITE_REG(hw, IXGBE_TDT(j), 0); |
| 1651 | adapter->tx_ring[i].head = IXGBE_TDH(j); |
| 1652 | adapter->tx_ring[i].tail = IXGBE_TDT(j); |
| 1653 | /* Disable Tx Head Writeback RO bit, since this hoses |
| 1654 | * bookkeeping if things aren't delivered in order. |
| 1655 | */ |
Jesse Brandeburg | e01c31a | 2008-08-26 04:27:13 -0700 | [diff] [blame] | 1656 | txctrl = IXGBE_READ_REG(hw, IXGBE_DCA_TXCTRL(j)); |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 1657 | txctrl &= ~IXGBE_DCA_TXCTRL_TX_WB_RO_EN; |
Jesse Brandeburg | e01c31a | 2008-08-26 04:27:13 -0700 | [diff] [blame] | 1658 | IXGBE_WRITE_REG(hw, IXGBE_DCA_TXCTRL(j), txctrl); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1659 | } |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 1660 | if (hw->mac.type == ixgbe_mac_82599EB) { |
| 1661 | /* We enable 8 traffic classes, DCB only */ |
| 1662 | if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) |
| 1663 | IXGBE_WRITE_REG(hw, IXGBE_MTQC, (IXGBE_MTQC_RT_ENA | |
| 1664 | IXGBE_MTQC_8TC_8TQ)); |
| 1665 | } |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1666 | } |
| 1667 | |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 1668 | #define IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT 2 |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1669 | |
Jesse Brandeburg | cc41ac7 | 2008-08-26 04:27:27 -0700 | [diff] [blame] | 1670 | static void ixgbe_configure_srrctl(struct ixgbe_adapter *adapter, int index) |
| 1671 | { |
| 1672 | struct ixgbe_ring *rx_ring; |
| 1673 | u32 srrctl; |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 1674 | int queue0 = 0; |
Alexander Duyck | 3be1adf | 2008-08-30 00:29:10 -0700 | [diff] [blame] | 1675 | unsigned long mask; |
Jesse Brandeburg | cc41ac7 | 2008-08-26 04:27:27 -0700 | [diff] [blame] | 1676 | |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 1677 | if (adapter->hw.mac.type == ixgbe_mac_82599EB) { |
| 1678 | queue0 = index; |
Jesse Brandeburg | cc41ac7 | 2008-08-26 04:27:27 -0700 | [diff] [blame] | 1679 | } else { |
Alexander Duyck | 3be1adf | 2008-08-30 00:29:10 -0700 | [diff] [blame] | 1680 | mask = (unsigned long) adapter->ring_feature[RING_F_RSS].mask; |
| 1681 | queue0 = index & mask; |
| 1682 | index = index & mask; |
Jesse Brandeburg | cc41ac7 | 2008-08-26 04:27:27 -0700 | [diff] [blame] | 1683 | } |
Alexander Duyck | 3be1adf | 2008-08-30 00:29:10 -0700 | [diff] [blame] | 1684 | |
Jesse Brandeburg | cc41ac7 | 2008-08-26 04:27:27 -0700 | [diff] [blame] | 1685 | rx_ring = &adapter->rx_ring[queue0]; |
| 1686 | |
| 1687 | srrctl = IXGBE_READ_REG(&adapter->hw, IXGBE_SRRCTL(index)); |
| 1688 | |
| 1689 | srrctl &= ~IXGBE_SRRCTL_BSIZEHDR_MASK; |
| 1690 | srrctl &= ~IXGBE_SRRCTL_BSIZEPKT_MASK; |
| 1691 | |
| 1692 | if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) { |
Jesse Brandeburg | 32344a3 | 2009-02-24 16:37:31 -0800 | [diff] [blame] | 1693 | u16 bufsz = IXGBE_RXBUFFER_2048; |
| 1694 | /* grow the amount we can receive on large page machines */ |
| 1695 | if (bufsz < (PAGE_SIZE / 2)) |
| 1696 | bufsz = (PAGE_SIZE / 2); |
| 1697 | /* cap the bufsz at our largest descriptor size */ |
| 1698 | bufsz = min((u16)IXGBE_MAX_RXBUFFER, bufsz); |
| 1699 | |
| 1700 | srrctl |= bufsz >> IXGBE_SRRCTL_BSIZEPKT_SHIFT; |
Jesse Brandeburg | cc41ac7 | 2008-08-26 04:27:27 -0700 | [diff] [blame] | 1701 | srrctl |= IXGBE_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS; |
| 1702 | srrctl |= ((IXGBE_RX_HDR_SIZE << |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 1703 | IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT) & |
| 1704 | IXGBE_SRRCTL_BSIZEHDR_MASK); |
Jesse Brandeburg | cc41ac7 | 2008-08-26 04:27:27 -0700 | [diff] [blame] | 1705 | } else { |
| 1706 | srrctl |= IXGBE_SRRCTL_DESCTYPE_ADV_ONEBUF; |
| 1707 | |
| 1708 | if (rx_ring->rx_buf_len == MAXIMUM_ETHERNET_VLAN_SIZE) |
| 1709 | srrctl |= IXGBE_RXBUFFER_2048 >> |
| 1710 | IXGBE_SRRCTL_BSIZEPKT_SHIFT; |
| 1711 | else |
| 1712 | srrctl |= rx_ring->rx_buf_len >> |
| 1713 | IXGBE_SRRCTL_BSIZEPKT_SHIFT; |
| 1714 | } |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 1715 | |
Jesse Brandeburg | cc41ac7 | 2008-08-26 04:27:27 -0700 | [diff] [blame] | 1716 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_SRRCTL(index), srrctl); |
| 1717 | } |
| 1718 | |
Mallikarjuna R Chilakala | 177db6f | 2008-06-18 15:32:19 -0700 | [diff] [blame] | 1719 | /** |
Jesse Brandeburg | 3a58107 | 2008-08-26 04:27:08 -0700 | [diff] [blame] | 1720 | * ixgbe_configure_rx - Configure 8259x Receive Unit after Reset |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1721 | * @adapter: board private structure |
| 1722 | * |
| 1723 | * Configure the Rx unit of the MAC after a reset. |
| 1724 | **/ |
| 1725 | static void ixgbe_configure_rx(struct ixgbe_adapter *adapter) |
| 1726 | { |
| 1727 | u64 rdba; |
| 1728 | struct ixgbe_hw *hw = &adapter->hw; |
| 1729 | struct net_device *netdev = adapter->netdev; |
| 1730 | int max_frame = netdev->mtu + ETH_HLEN + ETH_FCS_LEN; |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 1731 | int i, j; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1732 | u32 rdlen, rxctrl, rxcsum; |
Jesse Brandeburg | 7c6e0a4 | 2008-08-26 04:27:16 -0700 | [diff] [blame] | 1733 | static const u32 seed[10] = { 0xE291D73D, 0x1805EC6C, 0x2A94B30D, |
| 1734 | 0xA54F2BEC, 0xEA49AF7C, 0xE214AD3D, 0xB855AABE, |
| 1735 | 0x6A3E67EA, 0x14364D17, 0x3BED200D}; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1736 | u32 fctrl, hlreg0; |
Jesse Brandeburg | 509ee93 | 2009-03-13 22:13:28 +0000 | [diff] [blame] | 1737 | u32 reta = 0, mrqc = 0; |
Jesse Brandeburg | cc41ac7 | 2008-08-26 04:27:27 -0700 | [diff] [blame] | 1738 | u32 rdrxctl; |
Jesse Brandeburg | 7c6e0a4 | 2008-08-26 04:27:16 -0700 | [diff] [blame] | 1739 | int rx_buf_len; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1740 | |
| 1741 | /* Decide whether to use packet split mode or not */ |
Jesse Brandeburg | 762f4c5 | 2008-09-11 19:58:43 -0700 | [diff] [blame] | 1742 | adapter->flags |= IXGBE_FLAG_RX_PS_ENABLED; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1743 | |
| 1744 | /* Set the RX buffer length according to the mode */ |
| 1745 | if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) { |
Jesse Brandeburg | 7c6e0a4 | 2008-08-26 04:27:16 -0700 | [diff] [blame] | 1746 | rx_buf_len = IXGBE_RX_HDR_SIZE; |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 1747 | if (hw->mac.type == ixgbe_mac_82599EB) { |
| 1748 | /* PSRTYPE must be initialized in 82599 */ |
| 1749 | u32 psrtype = IXGBE_PSRTYPE_TCPHDR | |
| 1750 | IXGBE_PSRTYPE_UDPHDR | |
| 1751 | IXGBE_PSRTYPE_IPV4HDR | |
| 1752 | IXGBE_PSRTYPE_IPV6HDR; |
| 1753 | IXGBE_WRITE_REG(hw, IXGBE_PSRTYPE(0), psrtype); |
| 1754 | } |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1755 | } else { |
| 1756 | if (netdev->mtu <= ETH_DATA_LEN) |
Jesse Brandeburg | 7c6e0a4 | 2008-08-26 04:27:16 -0700 | [diff] [blame] | 1757 | rx_buf_len = MAXIMUM_ETHERNET_VLAN_SIZE; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1758 | else |
Jesse Brandeburg | 7c6e0a4 | 2008-08-26 04:27:16 -0700 | [diff] [blame] | 1759 | rx_buf_len = ALIGN(max_frame, 1024); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1760 | } |
| 1761 | |
| 1762 | fctrl = IXGBE_READ_REG(&adapter->hw, IXGBE_FCTRL); |
| 1763 | fctrl |= IXGBE_FCTRL_BAM; |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 1764 | fctrl |= IXGBE_FCTRL_DPF; /* discard pause frames when FC enabled */ |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 1765 | fctrl |= IXGBE_FCTRL_PMCF; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1766 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_FCTRL, fctrl); |
| 1767 | |
| 1768 | hlreg0 = IXGBE_READ_REG(hw, IXGBE_HLREG0); |
| 1769 | if (adapter->netdev->mtu <= ETH_DATA_LEN) |
| 1770 | hlreg0 &= ~IXGBE_HLREG0_JUMBOEN; |
| 1771 | else |
| 1772 | hlreg0 |= IXGBE_HLREG0_JUMBOEN; |
| 1773 | IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0); |
| 1774 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1775 | rdlen = adapter->rx_ring[0].count * sizeof(union ixgbe_adv_rx_desc); |
| 1776 | /* disable receives while setting up the descriptors */ |
| 1777 | rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL); |
| 1778 | IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, rxctrl & ~IXGBE_RXCTRL_RXEN); |
| 1779 | |
| 1780 | /* Setup the HW Rx Head and Tail Descriptor Pointers and |
| 1781 | * the Base and Length of the Rx Descriptor Ring */ |
| 1782 | for (i = 0; i < adapter->num_rx_queues; i++) { |
| 1783 | rdba = adapter->rx_ring[i].dma; |
Jesse Brandeburg | 7c6e0a4 | 2008-08-26 04:27:16 -0700 | [diff] [blame] | 1784 | j = adapter->rx_ring[i].reg_idx; |
Yang Hongyang | 284901a | 2009-04-06 19:01:15 -0700 | [diff] [blame] | 1785 | IXGBE_WRITE_REG(hw, IXGBE_RDBAL(j), (rdba & DMA_BIT_MASK(32))); |
Jesse Brandeburg | 7c6e0a4 | 2008-08-26 04:27:16 -0700 | [diff] [blame] | 1786 | IXGBE_WRITE_REG(hw, IXGBE_RDBAH(j), (rdba >> 32)); |
| 1787 | IXGBE_WRITE_REG(hw, IXGBE_RDLEN(j), rdlen); |
| 1788 | IXGBE_WRITE_REG(hw, IXGBE_RDH(j), 0); |
| 1789 | IXGBE_WRITE_REG(hw, IXGBE_RDT(j), 0); |
| 1790 | adapter->rx_ring[i].head = IXGBE_RDH(j); |
| 1791 | adapter->rx_ring[i].tail = IXGBE_RDT(j); |
| 1792 | adapter->rx_ring[i].rx_buf_len = rx_buf_len; |
Jesse Brandeburg | cc41ac7 | 2008-08-26 04:27:27 -0700 | [diff] [blame] | 1793 | |
| 1794 | ixgbe_configure_srrctl(adapter, j); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1795 | } |
| 1796 | |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 1797 | if (hw->mac.type == ixgbe_mac_82598EB) { |
| 1798 | /* |
| 1799 | * For VMDq support of different descriptor types or |
| 1800 | * buffer sizes through the use of multiple SRRCTL |
| 1801 | * registers, RDRXCTL.MVMEN must be set to 1 |
| 1802 | * |
| 1803 | * also, the manual doesn't mention it clearly but DCA hints |
| 1804 | * will only use queue 0's tags unless this bit is set. Side |
| 1805 | * effects of setting this bit are only that SRRCTL must be |
| 1806 | * fully programmed [0..15] |
| 1807 | */ |
Jesse Brandeburg | 2a41ff8 | 2009-03-13 22:14:30 +0000 | [diff] [blame] | 1808 | rdrxctl = IXGBE_READ_REG(hw, IXGBE_RDRXCTL); |
| 1809 | rdrxctl |= IXGBE_RDRXCTL_MVMEN; |
| 1810 | IXGBE_WRITE_REG(hw, IXGBE_RDRXCTL, rdrxctl); |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 1811 | } |
Mallikarjuna R Chilakala | 177db6f | 2008-06-18 15:32:19 -0700 | [diff] [blame] | 1812 | |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 1813 | /* Program MRQC for the distribution of queues */ |
| 1814 | if (hw->mac.type == ixgbe_mac_82599EB) { |
| 1815 | int mask = adapter->flags & ( |
| 1816 | IXGBE_FLAG_RSS_ENABLED |
| 1817 | | IXGBE_FLAG_DCB_ENABLED |
| 1818 | ); |
| 1819 | |
| 1820 | switch (mask) { |
| 1821 | case (IXGBE_FLAG_RSS_ENABLED): |
| 1822 | mrqc = IXGBE_MRQC_RSSEN; |
| 1823 | break; |
| 1824 | case (IXGBE_FLAG_DCB_ENABLED): |
| 1825 | mrqc = IXGBE_MRQC_RT8TCEN; |
| 1826 | break; |
| 1827 | default: |
| 1828 | break; |
| 1829 | } |
| 1830 | } |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 1831 | if (adapter->flags & IXGBE_FLAG_RSS_ENABLED) { |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1832 | /* Fill out redirection table */ |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 1833 | for (i = 0, j = 0; i < 128; i++, j++) { |
| 1834 | if (j == adapter->ring_feature[RING_F_RSS].indices) |
| 1835 | j = 0; |
| 1836 | /* reta = 4-byte sliding window of |
| 1837 | * 0x00..(indices-1)(indices-1)00..etc. */ |
| 1838 | reta = (reta << 8) | (j * 0x11); |
| 1839 | if ((i & 3) == 3) |
| 1840 | IXGBE_WRITE_REG(hw, IXGBE_RETA(i >> 2), reta); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1841 | } |
| 1842 | |
| 1843 | /* Fill out hash function seeds */ |
| 1844 | for (i = 0; i < 10; i++) |
Jesse Brandeburg | 7c6e0a4 | 2008-08-26 04:27:16 -0700 | [diff] [blame] | 1845 | IXGBE_WRITE_REG(hw, IXGBE_RSSRK(i), seed[i]); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1846 | |
Jesse Brandeburg | 2a41ff8 | 2009-03-13 22:14:30 +0000 | [diff] [blame] | 1847 | if (hw->mac.type == ixgbe_mac_82598EB) |
| 1848 | mrqc |= IXGBE_MRQC_RSSEN; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1849 | /* Perform hash on these packet types */ |
Jesse Brandeburg | 2a41ff8 | 2009-03-13 22:14:30 +0000 | [diff] [blame] | 1850 | mrqc |= IXGBE_MRQC_RSS_FIELD_IPV4 |
| 1851 | | IXGBE_MRQC_RSS_FIELD_IPV4_TCP |
| 1852 | | IXGBE_MRQC_RSS_FIELD_IPV4_UDP |
| 1853 | | IXGBE_MRQC_RSS_FIELD_IPV6 |
| 1854 | | IXGBE_MRQC_RSS_FIELD_IPV6_TCP |
| 1855 | | IXGBE_MRQC_RSS_FIELD_IPV6_UDP; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1856 | } |
Jesse Brandeburg | 2a41ff8 | 2009-03-13 22:14:30 +0000 | [diff] [blame] | 1857 | IXGBE_WRITE_REG(hw, IXGBE_MRQC, mrqc); |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 1858 | |
| 1859 | rxcsum = IXGBE_READ_REG(hw, IXGBE_RXCSUM); |
| 1860 | |
| 1861 | if (adapter->flags & IXGBE_FLAG_RSS_ENABLED || |
| 1862 | adapter->flags & IXGBE_FLAG_RX_CSUM_ENABLED) { |
| 1863 | /* Disable indicating checksum in descriptor, enables |
| 1864 | * RSS hash */ |
| 1865 | rxcsum |= IXGBE_RXCSUM_PCSD; |
| 1866 | } |
| 1867 | if (!(rxcsum & IXGBE_RXCSUM_PCSD)) { |
| 1868 | /* Enable IPv4 payload checksum for UDP fragments |
| 1869 | * if PCSD is not set */ |
| 1870 | rxcsum |= IXGBE_RXCSUM_IPPCSE; |
| 1871 | } |
| 1872 | |
| 1873 | IXGBE_WRITE_REG(hw, IXGBE_RXCSUM, rxcsum); |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 1874 | |
| 1875 | if (hw->mac.type == ixgbe_mac_82599EB) { |
| 1876 | rdrxctl = IXGBE_READ_REG(hw, IXGBE_RDRXCTL); |
| 1877 | rdrxctl |= IXGBE_RDRXCTL_CRCSTRIP; |
| 1878 | IXGBE_WRITE_REG(hw, IXGBE_RDRXCTL, rdrxctl); |
| 1879 | } |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1880 | } |
| 1881 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1882 | static void ixgbe_vlan_rx_add_vid(struct net_device *netdev, u16 vid) |
| 1883 | { |
| 1884 | struct ixgbe_adapter *adapter = netdev_priv(netdev); |
Jesse Brandeburg | c44ade9 | 2008-09-11 19:59:59 -0700 | [diff] [blame] | 1885 | struct ixgbe_hw *hw = &adapter->hw; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1886 | |
| 1887 | /* add VID to filter table */ |
Jesse Brandeburg | c44ade9 | 2008-09-11 19:59:59 -0700 | [diff] [blame] | 1888 | hw->mac.ops.set_vfta(&adapter->hw, vid, 0, true); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1889 | } |
| 1890 | |
| 1891 | static void ixgbe_vlan_rx_kill_vid(struct net_device *netdev, u16 vid) |
| 1892 | { |
| 1893 | struct ixgbe_adapter *adapter = netdev_priv(netdev); |
Jesse Brandeburg | c44ade9 | 2008-09-11 19:59:59 -0700 | [diff] [blame] | 1894 | struct ixgbe_hw *hw = &adapter->hw; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1895 | |
Ayyappan Veeraiyan | d4f8088 | 2008-02-01 15:58:41 -0800 | [diff] [blame] | 1896 | if (!test_bit(__IXGBE_DOWN, &adapter->state)) |
| 1897 | ixgbe_irq_disable(adapter); |
| 1898 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1899 | vlan_group_set_device(adapter->vlgrp, vid, NULL); |
Ayyappan Veeraiyan | d4f8088 | 2008-02-01 15:58:41 -0800 | [diff] [blame] | 1900 | |
| 1901 | if (!test_bit(__IXGBE_DOWN, &adapter->state)) |
| 1902 | ixgbe_irq_enable(adapter); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1903 | |
| 1904 | /* remove VID from filter table */ |
Jesse Brandeburg | c44ade9 | 2008-09-11 19:59:59 -0700 | [diff] [blame] | 1905 | hw->mac.ops.set_vfta(&adapter->hw, vid, 0, false); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1906 | } |
| 1907 | |
Don Skidmore | 068c89b | 2009-01-19 16:54:36 -0800 | [diff] [blame] | 1908 | static void ixgbe_vlan_rx_register(struct net_device *netdev, |
| 1909 | struct vlan_group *grp) |
| 1910 | { |
| 1911 | struct ixgbe_adapter *adapter = netdev_priv(netdev); |
| 1912 | u32 ctrl; |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 1913 | int i, j; |
Don Skidmore | 068c89b | 2009-01-19 16:54:36 -0800 | [diff] [blame] | 1914 | |
| 1915 | if (!test_bit(__IXGBE_DOWN, &adapter->state)) |
| 1916 | ixgbe_irq_disable(adapter); |
| 1917 | adapter->vlgrp = grp; |
| 1918 | |
| 1919 | /* |
| 1920 | * For a DCB driver, always enable VLAN tag stripping so we can |
| 1921 | * still receive traffic from a DCB-enabled host even if we're |
| 1922 | * not in DCB mode. |
| 1923 | */ |
| 1924 | ctrl = IXGBE_READ_REG(&adapter->hw, IXGBE_VLNCTRL); |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 1925 | if (adapter->hw.mac.type == ixgbe_mac_82598EB) { |
| 1926 | ctrl |= IXGBE_VLNCTRL_VME | IXGBE_VLNCTRL_VFE; |
Don Skidmore | 068c89b | 2009-01-19 16:54:36 -0800 | [diff] [blame] | 1927 | ctrl &= ~IXGBE_VLNCTRL_CFIEN; |
| 1928 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_VLNCTRL, ctrl); |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 1929 | } else if (adapter->hw.mac.type == ixgbe_mac_82599EB) { |
| 1930 | ctrl |= IXGBE_VLNCTRL_VFE; |
| 1931 | /* enable VLAN tag insert/strip */ |
| 1932 | ctrl = IXGBE_READ_REG(&adapter->hw, IXGBE_VLNCTRL); |
| 1933 | ctrl &= ~IXGBE_VLNCTRL_CFIEN; |
| 1934 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_VLNCTRL, ctrl); |
| 1935 | for (i = 0; i < adapter->num_rx_queues; i++) { |
| 1936 | j = adapter->rx_ring[i].reg_idx; |
| 1937 | ctrl = IXGBE_READ_REG(&adapter->hw, IXGBE_RXDCTL(j)); |
| 1938 | ctrl |= IXGBE_RXDCTL_VME; |
| 1939 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_RXDCTL(j), ctrl); |
| 1940 | } |
Don Skidmore | 068c89b | 2009-01-19 16:54:36 -0800 | [diff] [blame] | 1941 | } |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 1942 | ixgbe_vlan_rx_add_vid(netdev, 0); |
Don Skidmore | 068c89b | 2009-01-19 16:54:36 -0800 | [diff] [blame] | 1943 | |
| 1944 | if (!test_bit(__IXGBE_DOWN, &adapter->state)) |
| 1945 | ixgbe_irq_enable(adapter); |
| 1946 | } |
| 1947 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1948 | static void ixgbe_restore_vlan(struct ixgbe_adapter *adapter) |
| 1949 | { |
| 1950 | ixgbe_vlan_rx_register(adapter->netdev, adapter->vlgrp); |
| 1951 | |
| 1952 | if (adapter->vlgrp) { |
| 1953 | u16 vid; |
| 1954 | for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) { |
| 1955 | if (!vlan_group_get_device(adapter->vlgrp, vid)) |
| 1956 | continue; |
| 1957 | ixgbe_vlan_rx_add_vid(adapter->netdev, vid); |
| 1958 | } |
| 1959 | } |
| 1960 | } |
| 1961 | |
Christopher Leech | 2c5645c | 2008-08-26 04:27:02 -0700 | [diff] [blame] | 1962 | static u8 *ixgbe_addr_list_itr(struct ixgbe_hw *hw, u8 **mc_addr_ptr, u32 *vmdq) |
| 1963 | { |
| 1964 | struct dev_mc_list *mc_ptr; |
| 1965 | u8 *addr = *mc_addr_ptr; |
| 1966 | *vmdq = 0; |
| 1967 | |
| 1968 | mc_ptr = container_of(addr, struct dev_mc_list, dmi_addr[0]); |
| 1969 | if (mc_ptr->next) |
| 1970 | *mc_addr_ptr = mc_ptr->next->dmi_addr; |
| 1971 | else |
| 1972 | *mc_addr_ptr = NULL; |
| 1973 | |
| 1974 | return addr; |
| 1975 | } |
| 1976 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1977 | /** |
Christopher Leech | 2c5645c | 2008-08-26 04:27:02 -0700 | [diff] [blame] | 1978 | * ixgbe_set_rx_mode - Unicast, Multicast and Promiscuous mode set |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1979 | * @netdev: network interface device structure |
| 1980 | * |
Christopher Leech | 2c5645c | 2008-08-26 04:27:02 -0700 | [diff] [blame] | 1981 | * The set_rx_method entry point is called whenever the unicast/multicast |
| 1982 | * address list or the network interface flags are updated. This routine is |
| 1983 | * responsible for configuring the hardware for proper unicast, multicast and |
| 1984 | * promiscuous mode. |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1985 | **/ |
Christopher Leech | 2c5645c | 2008-08-26 04:27:02 -0700 | [diff] [blame] | 1986 | static void ixgbe_set_rx_mode(struct net_device *netdev) |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1987 | { |
| 1988 | struct ixgbe_adapter *adapter = netdev_priv(netdev); |
| 1989 | struct ixgbe_hw *hw = &adapter->hw; |
Alexander Duyck | 3d01625 | 2008-08-26 18:30:04 -0700 | [diff] [blame] | 1990 | u32 fctrl, vlnctrl; |
Christopher Leech | 2c5645c | 2008-08-26 04:27:02 -0700 | [diff] [blame] | 1991 | u8 *addr_list = NULL; |
| 1992 | int addr_count = 0; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1993 | |
| 1994 | /* Check for Promiscuous and All Multicast modes */ |
| 1995 | |
| 1996 | fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL); |
Alexander Duyck | 3d01625 | 2008-08-26 18:30:04 -0700 | [diff] [blame] | 1997 | vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 1998 | |
| 1999 | if (netdev->flags & IFF_PROMISC) { |
Christopher Leech | 2c5645c | 2008-08-26 04:27:02 -0700 | [diff] [blame] | 2000 | hw->addr_ctrl.user_set_promisc = 1; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2001 | fctrl |= (IXGBE_FCTRL_UPE | IXGBE_FCTRL_MPE); |
Alexander Duyck | 3d01625 | 2008-08-26 18:30:04 -0700 | [diff] [blame] | 2002 | vlnctrl &= ~IXGBE_VLNCTRL_VFE; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2003 | } else { |
Patrick McHardy | 746b9f0 | 2008-07-16 20:15:45 -0700 | [diff] [blame] | 2004 | if (netdev->flags & IFF_ALLMULTI) { |
| 2005 | fctrl |= IXGBE_FCTRL_MPE; |
| 2006 | fctrl &= ~IXGBE_FCTRL_UPE; |
| 2007 | } else { |
| 2008 | fctrl &= ~(IXGBE_FCTRL_UPE | IXGBE_FCTRL_MPE); |
| 2009 | } |
Alexander Duyck | 3d01625 | 2008-08-26 18:30:04 -0700 | [diff] [blame] | 2010 | vlnctrl |= IXGBE_VLNCTRL_VFE; |
Christopher Leech | 2c5645c | 2008-08-26 04:27:02 -0700 | [diff] [blame] | 2011 | hw->addr_ctrl.user_set_promisc = 0; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2012 | } |
| 2013 | |
| 2014 | IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl); |
Alexander Duyck | 3d01625 | 2008-08-26 18:30:04 -0700 | [diff] [blame] | 2015 | IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2016 | |
Christopher Leech | 2c5645c | 2008-08-26 04:27:02 -0700 | [diff] [blame] | 2017 | /* reprogram secondary unicast list */ |
| 2018 | addr_count = netdev->uc_count; |
| 2019 | if (addr_count) |
| 2020 | addr_list = netdev->uc_list->dmi_addr; |
Jesse Brandeburg | c44ade9 | 2008-09-11 19:59:59 -0700 | [diff] [blame] | 2021 | hw->mac.ops.update_uc_addr_list(hw, addr_list, addr_count, |
| 2022 | ixgbe_addr_list_itr); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2023 | |
Christopher Leech | 2c5645c | 2008-08-26 04:27:02 -0700 | [diff] [blame] | 2024 | /* reprogram multicast list */ |
| 2025 | addr_count = netdev->mc_count; |
| 2026 | if (addr_count) |
| 2027 | addr_list = netdev->mc_list->dmi_addr; |
Jesse Brandeburg | c44ade9 | 2008-09-11 19:59:59 -0700 | [diff] [blame] | 2028 | hw->mac.ops.update_mc_addr_list(hw, addr_list, addr_count, |
| 2029 | ixgbe_addr_list_itr); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2030 | } |
| 2031 | |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 2032 | static void ixgbe_napi_enable_all(struct ixgbe_adapter *adapter) |
| 2033 | { |
| 2034 | int q_idx; |
| 2035 | struct ixgbe_q_vector *q_vector; |
| 2036 | int q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS; |
| 2037 | |
| 2038 | /* legacy and MSI only use one vector */ |
| 2039 | if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED)) |
| 2040 | q_vectors = 1; |
| 2041 | |
| 2042 | for (q_idx = 0; q_idx < q_vectors; q_idx++) { |
Jesse Brandeburg | f084827 | 2008-09-11 19:59:42 -0700 | [diff] [blame] | 2043 | struct napi_struct *napi; |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 2044 | q_vector = &adapter->q_vector[q_idx]; |
| 2045 | if (!q_vector->rxr_count) |
| 2046 | continue; |
Jesse Brandeburg | f084827 | 2008-09-11 19:59:42 -0700 | [diff] [blame] | 2047 | napi = &q_vector->napi; |
| 2048 | if ((adapter->flags & IXGBE_FLAG_MSIX_ENABLED) && |
| 2049 | (q_vector->rxr_count > 1)) |
| 2050 | napi->poll = &ixgbe_clean_rxonly_many; |
| 2051 | |
| 2052 | napi_enable(napi); |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 2053 | } |
| 2054 | } |
| 2055 | |
| 2056 | static void ixgbe_napi_disable_all(struct ixgbe_adapter *adapter) |
| 2057 | { |
| 2058 | int q_idx; |
| 2059 | struct ixgbe_q_vector *q_vector; |
| 2060 | int q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS; |
| 2061 | |
| 2062 | /* legacy and MSI only use one vector */ |
| 2063 | if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED)) |
| 2064 | q_vectors = 1; |
| 2065 | |
| 2066 | for (q_idx = 0; q_idx < q_vectors; q_idx++) { |
| 2067 | q_vector = &adapter->q_vector[q_idx]; |
| 2068 | if (!q_vector->rxr_count) |
| 2069 | continue; |
| 2070 | napi_disable(&q_vector->napi); |
| 2071 | } |
| 2072 | } |
| 2073 | |
Jeff Kirsher | 7a6b6f5 | 2008-11-25 01:02:08 -0800 | [diff] [blame] | 2074 | #ifdef CONFIG_IXGBE_DCB |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 2075 | /* |
| 2076 | * ixgbe_configure_dcb - Configure DCB hardware |
| 2077 | * @adapter: ixgbe adapter struct |
| 2078 | * |
| 2079 | * This is called by the driver on open to configure the DCB hardware. |
| 2080 | * This is also called by the gennetlink interface when reconfiguring |
| 2081 | * the DCB state. |
| 2082 | */ |
| 2083 | static void ixgbe_configure_dcb(struct ixgbe_adapter *adapter) |
| 2084 | { |
| 2085 | struct ixgbe_hw *hw = &adapter->hw; |
| 2086 | u32 txdctl, vlnctrl; |
| 2087 | int i, j; |
| 2088 | |
| 2089 | ixgbe_dcb_check_config(&adapter->dcb_cfg); |
| 2090 | ixgbe_dcb_calculate_tc_credits(&adapter->dcb_cfg, DCB_TX_CONFIG); |
| 2091 | ixgbe_dcb_calculate_tc_credits(&adapter->dcb_cfg, DCB_RX_CONFIG); |
| 2092 | |
| 2093 | /* reconfigure the hardware */ |
| 2094 | ixgbe_dcb_hw_config(&adapter->hw, &adapter->dcb_cfg); |
| 2095 | |
| 2096 | for (i = 0; i < adapter->num_tx_queues; i++) { |
| 2097 | j = adapter->tx_ring[i].reg_idx; |
| 2098 | txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(j)); |
| 2099 | /* PThresh workaround for Tx hang with DFP enabled. */ |
| 2100 | txdctl |= 32; |
| 2101 | IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(j), txdctl); |
| 2102 | } |
| 2103 | /* Enable VLAN tag insert/strip */ |
| 2104 | vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL); |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 2105 | if (hw->mac.type == ixgbe_mac_82598EB) { |
| 2106 | vlnctrl |= IXGBE_VLNCTRL_VME | IXGBE_VLNCTRL_VFE; |
| 2107 | vlnctrl &= ~IXGBE_VLNCTRL_CFIEN; |
| 2108 | IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl); |
| 2109 | } else if (hw->mac.type == ixgbe_mac_82599EB) { |
| 2110 | vlnctrl |= IXGBE_VLNCTRL_VFE; |
| 2111 | vlnctrl &= ~IXGBE_VLNCTRL_CFIEN; |
| 2112 | IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl); |
| 2113 | for (i = 0; i < adapter->num_rx_queues; i++) { |
| 2114 | j = adapter->rx_ring[i].reg_idx; |
| 2115 | vlnctrl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(j)); |
| 2116 | vlnctrl |= IXGBE_RXDCTL_VME; |
| 2117 | IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(j), vlnctrl); |
| 2118 | } |
| 2119 | } |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 2120 | hw->mac.ops.set_vfta(&adapter->hw, 0, 0, true); |
| 2121 | } |
| 2122 | |
| 2123 | #endif |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2124 | static void ixgbe_configure(struct ixgbe_adapter *adapter) |
| 2125 | { |
| 2126 | struct net_device *netdev = adapter->netdev; |
| 2127 | int i; |
| 2128 | |
Christopher Leech | 2c5645c | 2008-08-26 04:27:02 -0700 | [diff] [blame] | 2129 | ixgbe_set_rx_mode(netdev); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2130 | |
| 2131 | ixgbe_restore_vlan(adapter); |
Jeff Kirsher | 7a6b6f5 | 2008-11-25 01:02:08 -0800 | [diff] [blame] | 2132 | #ifdef CONFIG_IXGBE_DCB |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 2133 | if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) { |
| 2134 | netif_set_gso_max_size(netdev, 32768); |
| 2135 | ixgbe_configure_dcb(adapter); |
| 2136 | } else { |
| 2137 | netif_set_gso_max_size(netdev, 65536); |
| 2138 | } |
| 2139 | #else |
| 2140 | netif_set_gso_max_size(netdev, 65536); |
| 2141 | #endif |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2142 | |
| 2143 | ixgbe_configure_tx(adapter); |
| 2144 | ixgbe_configure_rx(adapter); |
| 2145 | for (i = 0; i < adapter->num_rx_queues; i++) |
| 2146 | ixgbe_alloc_rx_buffers(adapter, &adapter->rx_ring[i], |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 2147 | (adapter->rx_ring[i].count - 1)); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2148 | } |
| 2149 | |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 2150 | static inline bool ixgbe_is_sfp(struct ixgbe_hw *hw) |
| 2151 | { |
| 2152 | switch (hw->phy.type) { |
| 2153 | case ixgbe_phy_sfp_avago: |
| 2154 | case ixgbe_phy_sfp_ftl: |
| 2155 | case ixgbe_phy_sfp_intel: |
| 2156 | case ixgbe_phy_sfp_unknown: |
| 2157 | case ixgbe_phy_tw_tyco: |
| 2158 | case ixgbe_phy_tw_unknown: |
| 2159 | return true; |
| 2160 | default: |
| 2161 | return false; |
| 2162 | } |
| 2163 | } |
| 2164 | |
Peter P Waskiewicz Jr | 0ecc061 | 2009-02-06 21:46:54 -0800 | [diff] [blame] | 2165 | /** |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 2166 | * ixgbe_sfp_link_config - set up SFP+ link |
| 2167 | * @adapter: pointer to private adapter struct |
| 2168 | **/ |
| 2169 | static void ixgbe_sfp_link_config(struct ixgbe_adapter *adapter) |
| 2170 | { |
| 2171 | struct ixgbe_hw *hw = &adapter->hw; |
| 2172 | |
| 2173 | if (hw->phy.multispeed_fiber) { |
| 2174 | /* |
| 2175 | * In multispeed fiber setups, the device may not have |
| 2176 | * had a physical connection when the driver loaded. |
| 2177 | * If that's the case, the initial link configuration |
| 2178 | * couldn't get the MAC into 10G or 1G mode, so we'll |
| 2179 | * never have a link status change interrupt fire. |
| 2180 | * We need to try and force an autonegotiation |
| 2181 | * session, then bring up link. |
| 2182 | */ |
| 2183 | hw->mac.ops.setup_sfp(hw); |
| 2184 | if (!(adapter->flags & IXGBE_FLAG_IN_SFP_LINK_TASK)) |
| 2185 | schedule_work(&adapter->multispeed_fiber_task); |
| 2186 | } else { |
| 2187 | /* |
| 2188 | * Direct Attach Cu and non-multispeed fiber modules |
| 2189 | * still need to be configured properly prior to |
| 2190 | * attempting link. |
| 2191 | */ |
| 2192 | if (!(adapter->flags & IXGBE_FLAG_IN_SFP_MOD_TASK)) |
| 2193 | schedule_work(&adapter->sfp_config_module_task); |
| 2194 | } |
| 2195 | } |
| 2196 | |
| 2197 | /** |
| 2198 | * ixgbe_non_sfp_link_config - set up non-SFP+ link |
Peter P Waskiewicz Jr | 0ecc061 | 2009-02-06 21:46:54 -0800 | [diff] [blame] | 2199 | * @hw: pointer to private hardware struct |
| 2200 | * |
| 2201 | * Returns 0 on success, negative on failure |
| 2202 | **/ |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 2203 | static int ixgbe_non_sfp_link_config(struct ixgbe_hw *hw) |
Peter P Waskiewicz Jr | 0ecc061 | 2009-02-06 21:46:54 -0800 | [diff] [blame] | 2204 | { |
| 2205 | u32 autoneg; |
| 2206 | bool link_up = false; |
| 2207 | u32 ret = IXGBE_ERR_LINK_SETUP; |
| 2208 | |
| 2209 | if (hw->mac.ops.check_link) |
| 2210 | ret = hw->mac.ops.check_link(hw, &autoneg, &link_up, false); |
| 2211 | |
| 2212 | if (ret) |
| 2213 | goto link_cfg_out; |
| 2214 | |
| 2215 | if (hw->mac.ops.get_link_capabilities) |
| 2216 | ret = hw->mac.ops.get_link_capabilities(hw, &autoneg, |
| 2217 | &hw->mac.autoneg); |
| 2218 | if (ret) |
| 2219 | goto link_cfg_out; |
| 2220 | |
| 2221 | if (hw->mac.ops.setup_link_speed) |
| 2222 | ret = hw->mac.ops.setup_link_speed(hw, autoneg, true, link_up); |
Peter P Waskiewicz Jr | 0ecc061 | 2009-02-06 21:46:54 -0800 | [diff] [blame] | 2223 | link_cfg_out: |
| 2224 | return ret; |
| 2225 | } |
| 2226 | |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 2227 | #define IXGBE_MAX_RX_DESC_POLL 10 |
| 2228 | static inline void ixgbe_rx_desc_queue_enable(struct ixgbe_adapter *adapter, |
| 2229 | int rxr) |
| 2230 | { |
| 2231 | int j = adapter->rx_ring[rxr].reg_idx; |
| 2232 | int k; |
| 2233 | |
| 2234 | for (k = 0; k < IXGBE_MAX_RX_DESC_POLL; k++) { |
| 2235 | if (IXGBE_READ_REG(&adapter->hw, |
| 2236 | IXGBE_RXDCTL(j)) & IXGBE_RXDCTL_ENABLE) |
| 2237 | break; |
| 2238 | else |
| 2239 | msleep(1); |
| 2240 | } |
| 2241 | if (k >= IXGBE_MAX_RX_DESC_POLL) { |
| 2242 | DPRINTK(DRV, ERR, "RXDCTL.ENABLE on Rx queue %d " |
| 2243 | "not set within the polling period\n", rxr); |
| 2244 | } |
| 2245 | ixgbe_release_rx_desc(&adapter->hw, &adapter->rx_ring[rxr], |
| 2246 | (adapter->rx_ring[rxr].count - 1)); |
| 2247 | } |
| 2248 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2249 | static int ixgbe_up_complete(struct ixgbe_adapter *adapter) |
| 2250 | { |
| 2251 | struct net_device *netdev = adapter->netdev; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2252 | struct ixgbe_hw *hw = &adapter->hw; |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 2253 | int i, j = 0; |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 2254 | int num_rx_rings = adapter->num_rx_queues; |
Peter P Waskiewicz Jr | 0ecc061 | 2009-02-06 21:46:54 -0800 | [diff] [blame] | 2255 | int err; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2256 | int max_frame = netdev->mtu + ETH_HLEN + ETH_FCS_LEN; |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 2257 | u32 txdctl, rxdctl, mhadd; |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 2258 | u32 dmatxctl; |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 2259 | u32 gpie; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2260 | |
Ayyappan Veeraiyan | 5eba369 | 2008-02-01 15:59:04 -0800 | [diff] [blame] | 2261 | ixgbe_get_hw_control(adapter); |
| 2262 | |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 2263 | if ((adapter->flags & IXGBE_FLAG_MSIX_ENABLED) || |
| 2264 | (adapter->flags & IXGBE_FLAG_MSI_ENABLED)) { |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2265 | if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) { |
| 2266 | gpie = (IXGBE_GPIE_MSIX_MODE | IXGBE_GPIE_EIAME | |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 2267 | IXGBE_GPIE_PBA_SUPPORT | IXGBE_GPIE_OCD); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2268 | } else { |
| 2269 | /* MSI only */ |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 2270 | gpie = 0; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2271 | } |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 2272 | /* XXX: to interrupt immediately for EICS writes, enable this */ |
| 2273 | /* gpie |= IXGBE_GPIE_EIMEN; */ |
| 2274 | IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie); |
| 2275 | } |
| 2276 | |
| 2277 | if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED)) { |
| 2278 | /* legacy interrupts, use EIAM to auto-mask when reading EICR, |
| 2279 | * specifically only auto mask tx and rx interrupts */ |
| 2280 | IXGBE_WRITE_REG(hw, IXGBE_EIAM, IXGBE_EICS_RTX_QUEUE); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2281 | } |
| 2282 | |
Jesse Brandeburg | 0befdb3 | 2008-10-31 00:46:40 -0700 | [diff] [blame] | 2283 | /* Enable fan failure interrupt if media type is copper */ |
| 2284 | if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) { |
| 2285 | gpie = IXGBE_READ_REG(hw, IXGBE_GPIE); |
| 2286 | gpie |= IXGBE_SDP1_GPIEN; |
| 2287 | IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie); |
| 2288 | } |
| 2289 | |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 2290 | if (hw->mac.type == ixgbe_mac_82599EB) { |
| 2291 | gpie = IXGBE_READ_REG(hw, IXGBE_GPIE); |
| 2292 | gpie |= IXGBE_SDP1_GPIEN; |
| 2293 | gpie |= IXGBE_SDP2_GPIEN; |
| 2294 | IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie); |
| 2295 | } |
| 2296 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2297 | mhadd = IXGBE_READ_REG(hw, IXGBE_MHADD); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2298 | if (max_frame != (mhadd >> IXGBE_MHADD_MFS_SHIFT)) { |
| 2299 | mhadd &= ~IXGBE_MHADD_MFS_MASK; |
| 2300 | mhadd |= max_frame << IXGBE_MHADD_MFS_SHIFT; |
| 2301 | |
| 2302 | IXGBE_WRITE_REG(hw, IXGBE_MHADD, mhadd); |
| 2303 | } |
| 2304 | |
| 2305 | for (i = 0; i < adapter->num_tx_queues; i++) { |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 2306 | j = adapter->tx_ring[i].reg_idx; |
| 2307 | txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(j)); |
Jesse Brandeburg | e01c31a | 2008-08-26 04:27:13 -0700 | [diff] [blame] | 2308 | /* enable WTHRESH=8 descriptors, to encourage burst writeback */ |
| 2309 | txdctl |= (8 << 16); |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 2310 | IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(j), txdctl); |
| 2311 | } |
| 2312 | |
| 2313 | if (hw->mac.type == ixgbe_mac_82599EB) { |
| 2314 | /* DMATXCTL.EN must be set after all Tx queue config is done */ |
| 2315 | dmatxctl = IXGBE_READ_REG(hw, IXGBE_DMATXCTL); |
| 2316 | dmatxctl |= IXGBE_DMATXCTL_TE; |
| 2317 | IXGBE_WRITE_REG(hw, IXGBE_DMATXCTL, dmatxctl); |
| 2318 | } |
| 2319 | for (i = 0; i < adapter->num_tx_queues; i++) { |
| 2320 | j = adapter->tx_ring[i].reg_idx; |
| 2321 | txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(j)); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2322 | txdctl |= IXGBE_TXDCTL_ENABLE; |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 2323 | IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(j), txdctl); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2324 | } |
| 2325 | |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 2326 | for (i = 0; i < num_rx_rings; i++) { |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 2327 | j = adapter->rx_ring[i].reg_idx; |
| 2328 | rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(j)); |
| 2329 | /* enable PTHRESH=32 descriptors (half the internal cache) |
| 2330 | * and HTHRESH=0 descriptors (to minimize latency on fetch), |
| 2331 | * this also removes a pesky rx_no_buffer_count increment */ |
| 2332 | rxdctl |= 0x0020; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2333 | rxdctl |= IXGBE_RXDCTL_ENABLE; |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 2334 | IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(j), rxdctl); |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 2335 | if (hw->mac.type == ixgbe_mac_82599EB) |
| 2336 | ixgbe_rx_desc_queue_enable(adapter, i); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2337 | } |
| 2338 | /* enable all receives */ |
| 2339 | rxdctl = IXGBE_READ_REG(hw, IXGBE_RXCTRL); |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 2340 | if (hw->mac.type == ixgbe_mac_82598EB) |
| 2341 | rxdctl |= (IXGBE_RXCTRL_DMBYPS | IXGBE_RXCTRL_RXEN); |
| 2342 | else |
| 2343 | rxdctl |= IXGBE_RXCTRL_RXEN; |
| 2344 | hw->mac.ops.enable_rx_dma(hw, rxdctl); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2345 | |
| 2346 | if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) |
| 2347 | ixgbe_configure_msix(adapter); |
| 2348 | else |
| 2349 | ixgbe_configure_msi_and_legacy(adapter); |
| 2350 | |
| 2351 | clear_bit(__IXGBE_DOWN, &adapter->state); |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 2352 | ixgbe_napi_enable_all(adapter); |
| 2353 | |
| 2354 | /* clear any pending interrupts, may auto mask */ |
| 2355 | IXGBE_READ_REG(hw, IXGBE_EICR); |
| 2356 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2357 | ixgbe_irq_enable(adapter); |
| 2358 | |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 2359 | /* |
| 2360 | * For hot-pluggable SFP+ devices, a new SFP+ module may have |
| 2361 | * arrived before interrupts were enabled. We need to kick off |
| 2362 | * the SFP+ module setup first, then try to bring up link. |
| 2363 | * If we're not hot-pluggable SFP+, we just need to configure link |
| 2364 | * and bring it up. |
| 2365 | */ |
| 2366 | err = hw->phy.ops.identify(hw); |
| 2367 | if (err == IXGBE_ERR_SFP_NOT_SUPPORTED) { |
| 2368 | DPRINTK(PROBE, ERR, "PHY not supported on this NIC %d\n", err); |
| 2369 | ixgbe_down(adapter); |
| 2370 | return err; |
| 2371 | } |
| 2372 | |
| 2373 | if (ixgbe_is_sfp(hw)) { |
| 2374 | ixgbe_sfp_link_config(adapter); |
| 2375 | } else { |
| 2376 | err = ixgbe_non_sfp_link_config(hw); |
| 2377 | if (err) |
| 2378 | DPRINTK(PROBE, ERR, "link_config FAILED %d\n", err); |
| 2379 | } |
Peter P Waskiewicz Jr | 0ecc061 | 2009-02-06 21:46:54 -0800 | [diff] [blame] | 2380 | |
Peter P Waskiewicz Jr | 1da100b | 2009-01-19 16:55:03 -0800 | [diff] [blame] | 2381 | /* enable transmits */ |
| 2382 | netif_tx_start_all_queues(netdev); |
| 2383 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2384 | /* bring the link up in the watchdog, this could race with our first |
| 2385 | * link up interrupt but shouldn't be a problem */ |
Jesse Brandeburg | cf8280e | 2008-09-11 19:55:32 -0700 | [diff] [blame] | 2386 | adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE; |
| 2387 | adapter->link_check_timeout = jiffies; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2388 | mod_timer(&adapter->watchdog_timer, jiffies); |
| 2389 | return 0; |
| 2390 | } |
| 2391 | |
Ayyappan Veeraiyan | d4f8088 | 2008-02-01 15:58:41 -0800 | [diff] [blame] | 2392 | void ixgbe_reinit_locked(struct ixgbe_adapter *adapter) |
| 2393 | { |
| 2394 | WARN_ON(in_interrupt()); |
| 2395 | while (test_and_set_bit(__IXGBE_RESETTING, &adapter->state)) |
| 2396 | msleep(1); |
| 2397 | ixgbe_down(adapter); |
| 2398 | ixgbe_up(adapter); |
| 2399 | clear_bit(__IXGBE_RESETTING, &adapter->state); |
| 2400 | } |
| 2401 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2402 | int ixgbe_up(struct ixgbe_adapter *adapter) |
| 2403 | { |
| 2404 | /* hardware has been reset, we need to reload some things */ |
| 2405 | ixgbe_configure(adapter); |
| 2406 | |
Jesse Brandeburg | 4dd64df | 2009-03-13 22:13:49 +0000 | [diff] [blame] | 2407 | ixgbe_napi_add_all(adapter); |
| 2408 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2409 | return ixgbe_up_complete(adapter); |
| 2410 | } |
| 2411 | |
| 2412 | void ixgbe_reset(struct ixgbe_adapter *adapter) |
| 2413 | { |
Jesse Brandeburg | c44ade9 | 2008-09-11 19:59:59 -0700 | [diff] [blame] | 2414 | struct ixgbe_hw *hw = &adapter->hw; |
| 2415 | if (hw->mac.ops.init_hw(hw)) |
| 2416 | dev_err(&adapter->pdev->dev, "Hardware Error\n"); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2417 | |
| 2418 | /* reprogram the RAR[0] in case user changed it. */ |
Jesse Brandeburg | c44ade9 | 2008-09-11 19:59:59 -0700 | [diff] [blame] | 2419 | hw->mac.ops.set_rar(hw, 0, hw->mac.addr, 0, IXGBE_RAH_AV); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2420 | |
| 2421 | } |
| 2422 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2423 | /** |
| 2424 | * ixgbe_clean_rx_ring - Free Rx Buffers per Queue |
| 2425 | * @adapter: board private structure |
| 2426 | * @rx_ring: ring to free buffers from |
| 2427 | **/ |
| 2428 | static void ixgbe_clean_rx_ring(struct ixgbe_adapter *adapter, |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 2429 | struct ixgbe_ring *rx_ring) |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2430 | { |
| 2431 | struct pci_dev *pdev = adapter->pdev; |
| 2432 | unsigned long size; |
| 2433 | unsigned int i; |
| 2434 | |
| 2435 | /* Free all the Rx ring sk_buffs */ |
| 2436 | |
| 2437 | for (i = 0; i < rx_ring->count; i++) { |
| 2438 | struct ixgbe_rx_buffer *rx_buffer_info; |
| 2439 | |
| 2440 | rx_buffer_info = &rx_ring->rx_buffer_info[i]; |
| 2441 | if (rx_buffer_info->dma) { |
| 2442 | pci_unmap_single(pdev, rx_buffer_info->dma, |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 2443 | rx_ring->rx_buf_len, |
| 2444 | PCI_DMA_FROMDEVICE); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2445 | rx_buffer_info->dma = 0; |
| 2446 | } |
| 2447 | if (rx_buffer_info->skb) { |
| 2448 | dev_kfree_skb(rx_buffer_info->skb); |
| 2449 | rx_buffer_info->skb = NULL; |
| 2450 | } |
| 2451 | if (!rx_buffer_info->page) |
| 2452 | continue; |
Jesse Brandeburg | 762f4c5 | 2008-09-11 19:58:43 -0700 | [diff] [blame] | 2453 | pci_unmap_page(pdev, rx_buffer_info->page_dma, PAGE_SIZE / 2, |
| 2454 | PCI_DMA_FROMDEVICE); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2455 | rx_buffer_info->page_dma = 0; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2456 | put_page(rx_buffer_info->page); |
| 2457 | rx_buffer_info->page = NULL; |
Jesse Brandeburg | 762f4c5 | 2008-09-11 19:58:43 -0700 | [diff] [blame] | 2458 | rx_buffer_info->page_offset = 0; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2459 | } |
| 2460 | |
| 2461 | size = sizeof(struct ixgbe_rx_buffer) * rx_ring->count; |
| 2462 | memset(rx_ring->rx_buffer_info, 0, size); |
| 2463 | |
| 2464 | /* Zero out the descriptor ring */ |
| 2465 | memset(rx_ring->desc, 0, rx_ring->size); |
| 2466 | |
| 2467 | rx_ring->next_to_clean = 0; |
| 2468 | rx_ring->next_to_use = 0; |
| 2469 | |
Jesse Brandeburg | 9891ca7 | 2009-03-13 22:14:50 +0000 | [diff] [blame] | 2470 | if (rx_ring->head) |
| 2471 | writel(0, adapter->hw.hw_addr + rx_ring->head); |
| 2472 | if (rx_ring->tail) |
| 2473 | writel(0, adapter->hw.hw_addr + rx_ring->tail); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2474 | } |
| 2475 | |
| 2476 | /** |
| 2477 | * ixgbe_clean_tx_ring - Free Tx Buffers |
| 2478 | * @adapter: board private structure |
| 2479 | * @tx_ring: ring to be cleaned |
| 2480 | **/ |
| 2481 | static void ixgbe_clean_tx_ring(struct ixgbe_adapter *adapter, |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 2482 | struct ixgbe_ring *tx_ring) |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2483 | { |
| 2484 | struct ixgbe_tx_buffer *tx_buffer_info; |
| 2485 | unsigned long size; |
| 2486 | unsigned int i; |
| 2487 | |
| 2488 | /* Free all the Tx ring sk_buffs */ |
| 2489 | |
| 2490 | for (i = 0; i < tx_ring->count; i++) { |
| 2491 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; |
| 2492 | ixgbe_unmap_and_free_tx_resource(adapter, tx_buffer_info); |
| 2493 | } |
| 2494 | |
| 2495 | size = sizeof(struct ixgbe_tx_buffer) * tx_ring->count; |
| 2496 | memset(tx_ring->tx_buffer_info, 0, size); |
| 2497 | |
| 2498 | /* Zero out the descriptor ring */ |
| 2499 | memset(tx_ring->desc, 0, tx_ring->size); |
| 2500 | |
| 2501 | tx_ring->next_to_use = 0; |
| 2502 | tx_ring->next_to_clean = 0; |
| 2503 | |
Jesse Brandeburg | 9891ca7 | 2009-03-13 22:14:50 +0000 | [diff] [blame] | 2504 | if (tx_ring->head) |
| 2505 | writel(0, adapter->hw.hw_addr + tx_ring->head); |
| 2506 | if (tx_ring->tail) |
| 2507 | writel(0, adapter->hw.hw_addr + tx_ring->tail); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2508 | } |
| 2509 | |
| 2510 | /** |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2511 | * ixgbe_clean_all_rx_rings - Free Rx Buffers for all queues |
| 2512 | * @adapter: board private structure |
| 2513 | **/ |
| 2514 | static void ixgbe_clean_all_rx_rings(struct ixgbe_adapter *adapter) |
| 2515 | { |
| 2516 | int i; |
| 2517 | |
| 2518 | for (i = 0; i < adapter->num_rx_queues; i++) |
| 2519 | ixgbe_clean_rx_ring(adapter, &adapter->rx_ring[i]); |
| 2520 | } |
| 2521 | |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 2522 | /** |
| 2523 | * ixgbe_clean_all_tx_rings - Free Tx Buffers for all queues |
| 2524 | * @adapter: board private structure |
| 2525 | **/ |
| 2526 | static void ixgbe_clean_all_tx_rings(struct ixgbe_adapter *adapter) |
| 2527 | { |
| 2528 | int i; |
| 2529 | |
| 2530 | for (i = 0; i < adapter->num_tx_queues; i++) |
| 2531 | ixgbe_clean_tx_ring(adapter, &adapter->tx_ring[i]); |
| 2532 | } |
| 2533 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2534 | void ixgbe_down(struct ixgbe_adapter *adapter) |
| 2535 | { |
| 2536 | struct net_device *netdev = adapter->netdev; |
Jesse Brandeburg | 7f82187 | 2008-09-11 20:00:16 -0700 | [diff] [blame] | 2537 | struct ixgbe_hw *hw = &adapter->hw; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2538 | u32 rxctrl; |
Jesse Brandeburg | 7f82187 | 2008-09-11 20:00:16 -0700 | [diff] [blame] | 2539 | u32 txdctl; |
| 2540 | int i, j; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2541 | |
| 2542 | /* signal that we are down to the interrupt handler */ |
| 2543 | set_bit(__IXGBE_DOWN, &adapter->state); |
| 2544 | |
| 2545 | /* disable receives */ |
Jesse Brandeburg | 7f82187 | 2008-09-11 20:00:16 -0700 | [diff] [blame] | 2546 | rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL); |
| 2547 | IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, rxctrl & ~IXGBE_RXCTRL_RXEN); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2548 | |
| 2549 | netif_tx_disable(netdev); |
| 2550 | |
Jesse Brandeburg | 7f82187 | 2008-09-11 20:00:16 -0700 | [diff] [blame] | 2551 | IXGBE_WRITE_FLUSH(hw); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2552 | msleep(10); |
| 2553 | |
Jesse Brandeburg | 7f82187 | 2008-09-11 20:00:16 -0700 | [diff] [blame] | 2554 | netif_tx_stop_all_queues(netdev); |
| 2555 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2556 | ixgbe_irq_disable(adapter); |
| 2557 | |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 2558 | ixgbe_napi_disable_all(adapter); |
Jesse Brandeburg | 7f82187 | 2008-09-11 20:00:16 -0700 | [diff] [blame] | 2559 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2560 | del_timer_sync(&adapter->watchdog_timer); |
Jesse Brandeburg | cf8280e | 2008-09-11 19:55:32 -0700 | [diff] [blame] | 2561 | cancel_work_sync(&adapter->watchdog_task); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2562 | |
Jesse Brandeburg | 7f82187 | 2008-09-11 20:00:16 -0700 | [diff] [blame] | 2563 | /* disable transmits in the hardware now that interrupts are off */ |
| 2564 | for (i = 0; i < adapter->num_tx_queues; i++) { |
| 2565 | j = adapter->tx_ring[i].reg_idx; |
| 2566 | txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(j)); |
| 2567 | IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(j), |
| 2568 | (txdctl & ~IXGBE_TXDCTL_ENABLE)); |
| 2569 | } |
PJ Waskiewicz | 8851253 | 2009-03-13 22:15:10 +0000 | [diff] [blame] | 2570 | /* Disable the Tx DMA engine on 82599 */ |
| 2571 | if (hw->mac.type == ixgbe_mac_82599EB) |
| 2572 | IXGBE_WRITE_REG(hw, IXGBE_DMATXCTL, |
| 2573 | (IXGBE_READ_REG(hw, IXGBE_DMATXCTL) & |
| 2574 | ~IXGBE_DMATXCTL_TE)); |
Jesse Brandeburg | 7f82187 | 2008-09-11 20:00:16 -0700 | [diff] [blame] | 2575 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2576 | netif_carrier_off(netdev); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2577 | |
Jeff Garzik | 5dd2d33 | 2008-10-16 05:09:31 -0400 | [diff] [blame] | 2578 | #ifdef CONFIG_IXGBE_DCA |
Jesse Brandeburg | 96b0e0f | 2008-08-26 04:27:21 -0700 | [diff] [blame] | 2579 | if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) { |
| 2580 | adapter->flags &= ~IXGBE_FLAG_DCA_ENABLED; |
| 2581 | dca_remove_requester(&adapter->pdev->dev); |
| 2582 | } |
| 2583 | |
| 2584 | #endif |
Paul Larson | 6f4a0e4 | 2008-06-24 17:00:56 -0700 | [diff] [blame] | 2585 | if (!pci_channel_offline(adapter->pdev)) |
| 2586 | ixgbe_reset(adapter); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2587 | ixgbe_clean_all_tx_rings(adapter); |
| 2588 | ixgbe_clean_all_rx_rings(adapter); |
| 2589 | |
Jeff Garzik | 5dd2d33 | 2008-10-16 05:09:31 -0400 | [diff] [blame] | 2590 | #ifdef CONFIG_IXGBE_DCA |
Jesse Brandeburg | 96b0e0f | 2008-08-26 04:27:21 -0700 | [diff] [blame] | 2591 | /* since we reset the hardware DCA settings were cleared */ |
| 2592 | if (dca_add_requester(&adapter->pdev->dev) == 0) { |
| 2593 | adapter->flags |= IXGBE_FLAG_DCA_ENABLED; |
| 2594 | /* always use CB2 mode, difference is masked |
| 2595 | * in the CB driver */ |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 2596 | IXGBE_WRITE_REG(hw, IXGBE_DCA_CTRL, 2); |
Jesse Brandeburg | 96b0e0f | 2008-08-26 04:27:21 -0700 | [diff] [blame] | 2597 | ixgbe_setup_dca(adapter); |
| 2598 | } |
| 2599 | #endif |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2600 | } |
| 2601 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2602 | /** |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 2603 | * ixgbe_poll - NAPI Rx polling callback |
| 2604 | * @napi: structure for representing this polling device |
| 2605 | * @budget: how many packets driver is allowed to clean |
| 2606 | * |
| 2607 | * This function is used for legacy and MSI, NAPI mode |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2608 | **/ |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 2609 | static int ixgbe_poll(struct napi_struct *napi, int budget) |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2610 | { |
Jesse Brandeburg | 9a1a69ad | 2009-03-13 22:14:10 +0000 | [diff] [blame] | 2611 | struct ixgbe_q_vector *q_vector = |
| 2612 | container_of(napi, struct ixgbe_q_vector, napi); |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 2613 | struct ixgbe_adapter *adapter = q_vector->adapter; |
Jesse Brandeburg | 9a1a69ad | 2009-03-13 22:14:10 +0000 | [diff] [blame] | 2614 | int tx_clean_complete, work_done = 0; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2615 | |
Jeff Garzik | 5dd2d33 | 2008-10-16 05:09:31 -0400 | [diff] [blame] | 2616 | #ifdef CONFIG_IXGBE_DCA |
Jeb Cramer | bd0362d | 2008-03-03 15:04:02 -0800 | [diff] [blame] | 2617 | if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) { |
| 2618 | ixgbe_update_tx_dca(adapter, adapter->tx_ring); |
| 2619 | ixgbe_update_rx_dca(adapter, adapter->rx_ring); |
| 2620 | } |
| 2621 | #endif |
| 2622 | |
Jesse Brandeburg | 9a1a69ad | 2009-03-13 22:14:10 +0000 | [diff] [blame] | 2623 | tx_clean_complete = ixgbe_clean_tx_irq(adapter, adapter->tx_ring); |
Herbert Xu | 78b6f4c | 2009-01-18 21:49:45 -0800 | [diff] [blame] | 2624 | ixgbe_clean_rx_irq(q_vector, adapter->rx_ring, &work_done, budget); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2625 | |
Jesse Brandeburg | 9a1a69ad | 2009-03-13 22:14:10 +0000 | [diff] [blame] | 2626 | if (!tx_clean_complete) |
David S. Miller | d2c7ddd | 2008-01-15 22:43:24 -0800 | [diff] [blame] | 2627 | work_done = budget; |
| 2628 | |
David S. Miller | 53e52c7 | 2008-01-07 21:06:12 -0800 | [diff] [blame] | 2629 | /* If budget not fully consumed, exit the polling mode */ |
| 2630 | if (work_done < budget) { |
Ben Hutchings | 288379f | 2009-01-19 16:43:59 -0800 | [diff] [blame] | 2631 | napi_complete(napi); |
Jesse Brandeburg | 509ee93 | 2009-03-13 22:13:28 +0000 | [diff] [blame] | 2632 | if (adapter->itr_setting & 1) |
Ayyappan Veeraiyan | f494e8f | 2008-03-03 15:03:57 -0800 | [diff] [blame] | 2633 | ixgbe_set_itr(adapter); |
Ayyappan Veeraiyan | d4f8088 | 2008-02-01 15:58:41 -0800 | [diff] [blame] | 2634 | if (!test_bit(__IXGBE_DOWN, &adapter->state)) |
Jesse Brandeburg | 22d5a71 | 2009-03-19 01:24:04 +0000 | [diff] [blame] | 2635 | ixgbe_irq_enable_queues(adapter); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2636 | } |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2637 | return work_done; |
| 2638 | } |
| 2639 | |
| 2640 | /** |
| 2641 | * ixgbe_tx_timeout - Respond to a Tx Hang |
| 2642 | * @netdev: network interface device structure |
| 2643 | **/ |
| 2644 | static void ixgbe_tx_timeout(struct net_device *netdev) |
| 2645 | { |
| 2646 | struct ixgbe_adapter *adapter = netdev_priv(netdev); |
| 2647 | |
| 2648 | /* Do the reset outside of interrupt context */ |
| 2649 | schedule_work(&adapter->reset_task); |
| 2650 | } |
| 2651 | |
| 2652 | static void ixgbe_reset_task(struct work_struct *work) |
| 2653 | { |
| 2654 | struct ixgbe_adapter *adapter; |
| 2655 | adapter = container_of(work, struct ixgbe_adapter, reset_task); |
| 2656 | |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 2657 | /* If we're already down or resetting, just bail */ |
| 2658 | if (test_bit(__IXGBE_DOWN, &adapter->state) || |
| 2659 | test_bit(__IXGBE_RESETTING, &adapter->state)) |
| 2660 | return; |
| 2661 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2662 | adapter->tx_timeout_count++; |
| 2663 | |
Ayyappan Veeraiyan | d4f8088 | 2008-02-01 15:58:41 -0800 | [diff] [blame] | 2664 | ixgbe_reinit_locked(adapter); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2665 | } |
| 2666 | |
Peter P Waskiewicz Jr | bc97114 | 2009-02-05 23:53:59 -0800 | [diff] [blame] | 2667 | #ifdef CONFIG_IXGBE_DCB |
| 2668 | static inline bool ixgbe_set_dcb_queues(struct ixgbe_adapter *adapter) |
Jesse Brandeburg | b980497 | 2008-09-11 20:00:29 -0700 | [diff] [blame] | 2669 | { |
Peter P Waskiewicz Jr | bc97114 | 2009-02-05 23:53:59 -0800 | [diff] [blame] | 2670 | bool ret = false; |
Jesse Brandeburg | b980497 | 2008-09-11 20:00:29 -0700 | [diff] [blame] | 2671 | |
Peter P Waskiewicz Jr | bc97114 | 2009-02-05 23:53:59 -0800 | [diff] [blame] | 2672 | if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) { |
| 2673 | adapter->ring_feature[RING_F_DCB].mask = 0x7 << 3; |
| 2674 | adapter->num_rx_queues = |
| 2675 | adapter->ring_feature[RING_F_DCB].indices; |
| 2676 | adapter->num_tx_queues = |
| 2677 | adapter->ring_feature[RING_F_DCB].indices; |
| 2678 | ret = true; |
| 2679 | } else { |
Peter P Waskiewicz Jr | bc97114 | 2009-02-05 23:53:59 -0800 | [diff] [blame] | 2680 | ret = false; |
Jesse Brandeburg | b980497 | 2008-09-11 20:00:29 -0700 | [diff] [blame] | 2681 | } |
| 2682 | |
Peter P Waskiewicz Jr | bc97114 | 2009-02-05 23:53:59 -0800 | [diff] [blame] | 2683 | return ret; |
| 2684 | } |
| 2685 | #endif |
| 2686 | |
Jesse Brandeburg | 4df1046 | 2009-03-13 22:15:31 +0000 | [diff] [blame] | 2687 | /** |
| 2688 | * ixgbe_set_rss_queues: Allocate queues for RSS |
| 2689 | * @adapter: board private structure to initialize |
| 2690 | * |
| 2691 | * This is our "base" multiqueue mode. RSS (Receive Side Scaling) will try |
| 2692 | * to allocate one Rx queue per CPU, and if available, one Tx queue per CPU. |
| 2693 | * |
| 2694 | **/ |
Peter P Waskiewicz Jr | bc97114 | 2009-02-05 23:53:59 -0800 | [diff] [blame] | 2695 | static inline bool ixgbe_set_rss_queues(struct ixgbe_adapter *adapter) |
| 2696 | { |
| 2697 | bool ret = false; |
| 2698 | |
| 2699 | if (adapter->flags & IXGBE_FLAG_RSS_ENABLED) { |
| 2700 | adapter->ring_feature[RING_F_RSS].mask = 0xF; |
| 2701 | adapter->num_rx_queues = |
| 2702 | adapter->ring_feature[RING_F_RSS].indices; |
| 2703 | adapter->num_tx_queues = |
| 2704 | adapter->ring_feature[RING_F_RSS].indices; |
| 2705 | ret = true; |
| 2706 | } else { |
Peter P Waskiewicz Jr | bc97114 | 2009-02-05 23:53:59 -0800 | [diff] [blame] | 2707 | ret = false; |
| 2708 | } |
| 2709 | |
| 2710 | return ret; |
| 2711 | } |
| 2712 | |
Jesse Brandeburg | 4df1046 | 2009-03-13 22:15:31 +0000 | [diff] [blame] | 2713 | /* |
| 2714 | * ixgbe_set_num_queues: Allocate queues for device, feature dependant |
| 2715 | * @adapter: board private structure to initialize |
| 2716 | * |
| 2717 | * This is the top level queue allocation routine. The order here is very |
| 2718 | * important, starting with the "most" number of features turned on at once, |
| 2719 | * and ending with the smallest set of features. This way large combinations |
| 2720 | * can be allocated if they're turned on, and smaller combinations are the |
| 2721 | * fallthrough conditions. |
| 2722 | * |
| 2723 | **/ |
Peter P Waskiewicz Jr | bc97114 | 2009-02-05 23:53:59 -0800 | [diff] [blame] | 2724 | static void ixgbe_set_num_queues(struct ixgbe_adapter *adapter) |
| 2725 | { |
| 2726 | /* Start with base case */ |
| 2727 | adapter->num_rx_queues = 1; |
| 2728 | adapter->num_tx_queues = 1; |
| 2729 | |
| 2730 | #ifdef CONFIG_IXGBE_DCB |
| 2731 | if (ixgbe_set_dcb_queues(adapter)) |
| 2732 | return; |
| 2733 | |
| 2734 | #endif |
| 2735 | if (ixgbe_set_rss_queues(adapter)) |
| 2736 | return; |
Jesse Brandeburg | b980497 | 2008-09-11 20:00:29 -0700 | [diff] [blame] | 2737 | } |
| 2738 | |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 2739 | static void ixgbe_acquire_msix_vectors(struct ixgbe_adapter *adapter, |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 2740 | int vectors) |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 2741 | { |
| 2742 | int err, vector_threshold; |
| 2743 | |
| 2744 | /* We'll want at least 3 (vector_threshold): |
| 2745 | * 1) TxQ[0] Cleanup |
| 2746 | * 2) RxQ[0] Cleanup |
| 2747 | * 3) Other (Link Status Change, etc.) |
| 2748 | * 4) TCP Timer (optional) |
| 2749 | */ |
| 2750 | vector_threshold = MIN_MSIX_COUNT; |
| 2751 | |
| 2752 | /* The more we get, the more we will assign to Tx/Rx Cleanup |
| 2753 | * for the separate queues...where Rx Cleanup >= Tx Cleanup. |
| 2754 | * Right now, we simply care about how many we'll get; we'll |
| 2755 | * set them up later while requesting irq's. |
| 2756 | */ |
| 2757 | while (vectors >= vector_threshold) { |
| 2758 | err = pci_enable_msix(adapter->pdev, adapter->msix_entries, |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 2759 | vectors); |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 2760 | if (!err) /* Success in acquiring all requested vectors. */ |
| 2761 | break; |
| 2762 | else if (err < 0) |
| 2763 | vectors = 0; /* Nasty failure, quit now */ |
| 2764 | else /* err == number of vectors we should try again with */ |
| 2765 | vectors = err; |
| 2766 | } |
| 2767 | |
| 2768 | if (vectors < vector_threshold) { |
| 2769 | /* Can't allocate enough MSI-X interrupts? Oh well. |
| 2770 | * This just means we'll go with either a single MSI |
| 2771 | * vector or fall back to legacy interrupts. |
| 2772 | */ |
| 2773 | DPRINTK(HW, DEBUG, "Unable to allocate MSI-X interrupts\n"); |
| 2774 | adapter->flags &= ~IXGBE_FLAG_MSIX_ENABLED; |
| 2775 | kfree(adapter->msix_entries); |
| 2776 | adapter->msix_entries = NULL; |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 2777 | adapter->flags &= ~IXGBE_FLAG_DCB_ENABLED; |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 2778 | adapter->flags &= ~IXGBE_FLAG_RSS_ENABLED; |
Jesse Brandeburg | b980497 | 2008-09-11 20:00:29 -0700 | [diff] [blame] | 2779 | ixgbe_set_num_queues(adapter); |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 2780 | } else { |
| 2781 | adapter->flags |= IXGBE_FLAG_MSIX_ENABLED; /* Woot! */ |
Peter P Waskiewicz Jr | eb7f139 | 2009-02-01 01:18:58 -0800 | [diff] [blame] | 2782 | /* |
| 2783 | * Adjust for only the vectors we'll use, which is minimum |
| 2784 | * of max_msix_q_vectors + NON_Q_VECTORS, or the number of |
| 2785 | * vectors we were allocated. |
| 2786 | */ |
| 2787 | adapter->num_msix_vectors = min(vectors, |
| 2788 | adapter->max_msix_q_vectors + NON_Q_VECTORS); |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 2789 | } |
| 2790 | } |
| 2791 | |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 2792 | /** |
Peter P Waskiewicz Jr | bc97114 | 2009-02-05 23:53:59 -0800 | [diff] [blame] | 2793 | * ixgbe_cache_ring_rss - Descriptor ring to register mapping for RSS |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 2794 | * @adapter: board private structure to initialize |
| 2795 | * |
Peter P Waskiewicz Jr | bc97114 | 2009-02-05 23:53:59 -0800 | [diff] [blame] | 2796 | * Cache the descriptor ring offsets for RSS to the assigned rings. |
| 2797 | * |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 2798 | **/ |
Peter P Waskiewicz Jr | bc97114 | 2009-02-05 23:53:59 -0800 | [diff] [blame] | 2799 | static inline bool ixgbe_cache_ring_rss(struct ixgbe_adapter *adapter) |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 2800 | { |
Peter P Waskiewicz Jr | bc97114 | 2009-02-05 23:53:59 -0800 | [diff] [blame] | 2801 | int i; |
| 2802 | bool ret = false; |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 2803 | |
Peter P Waskiewicz Jr | bc97114 | 2009-02-05 23:53:59 -0800 | [diff] [blame] | 2804 | if (adapter->flags & IXGBE_FLAG_RSS_ENABLED) { |
| 2805 | for (i = 0; i < adapter->num_rx_queues; i++) |
| 2806 | adapter->rx_ring[i].reg_idx = i; |
| 2807 | for (i = 0; i < adapter->num_tx_queues; i++) |
| 2808 | adapter->tx_ring[i].reg_idx = i; |
| 2809 | ret = true; |
| 2810 | } else { |
| 2811 | ret = false; |
| 2812 | } |
| 2813 | |
| 2814 | return ret; |
| 2815 | } |
| 2816 | |
| 2817 | #ifdef CONFIG_IXGBE_DCB |
| 2818 | /** |
| 2819 | * ixgbe_cache_ring_dcb - Descriptor ring to register mapping for DCB |
| 2820 | * @adapter: board private structure to initialize |
| 2821 | * |
| 2822 | * Cache the descriptor ring offsets for DCB to the assigned rings. |
| 2823 | * |
| 2824 | **/ |
| 2825 | static inline bool ixgbe_cache_ring_dcb(struct ixgbe_adapter *adapter) |
| 2826 | { |
| 2827 | int i; |
| 2828 | bool ret = false; |
| 2829 | int dcb_i = adapter->ring_feature[RING_F_DCB].indices; |
| 2830 | |
| 2831 | if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) { |
| 2832 | if (adapter->hw.mac.type == ixgbe_mac_82598EB) { |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 2833 | /* the number of queues is assumed to be symmetric */ |
| 2834 | for (i = 0; i < dcb_i; i++) { |
| 2835 | adapter->rx_ring[i].reg_idx = i << 3; |
| 2836 | adapter->tx_ring[i].reg_idx = i << 2; |
| 2837 | } |
Peter P Waskiewicz Jr | bc97114 | 2009-02-05 23:53:59 -0800 | [diff] [blame] | 2838 | ret = true; |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 2839 | } else if (adapter->hw.mac.type == ixgbe_mac_82599EB) { |
| 2840 | for (i = 0; i < dcb_i; i++) { |
| 2841 | adapter->rx_ring[i].reg_idx = i << 4; |
| 2842 | adapter->tx_ring[i].reg_idx = i << 4; |
| 2843 | } |
| 2844 | ret = true; |
Peter P Waskiewicz Jr | bc97114 | 2009-02-05 23:53:59 -0800 | [diff] [blame] | 2845 | } else { |
| 2846 | ret = false; |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 2847 | } |
Peter P Waskiewicz Jr | bc97114 | 2009-02-05 23:53:59 -0800 | [diff] [blame] | 2848 | } else { |
| 2849 | ret = false; |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 2850 | } |
Peter P Waskiewicz Jr | bc97114 | 2009-02-05 23:53:59 -0800 | [diff] [blame] | 2851 | |
| 2852 | return ret; |
| 2853 | } |
| 2854 | #endif |
| 2855 | |
| 2856 | /** |
| 2857 | * ixgbe_cache_ring_register - Descriptor ring to register mapping |
| 2858 | * @adapter: board private structure to initialize |
| 2859 | * |
| 2860 | * Once we know the feature-set enabled for the device, we'll cache |
| 2861 | * the register offset the descriptor ring is assigned to. |
| 2862 | * |
| 2863 | * Note, the order the various feature calls is important. It must start with |
| 2864 | * the "most" features enabled at the same time, then trickle down to the |
| 2865 | * least amount of features turned on at once. |
| 2866 | **/ |
| 2867 | static void ixgbe_cache_ring_register(struct ixgbe_adapter *adapter) |
| 2868 | { |
| 2869 | /* start with default case */ |
| 2870 | adapter->rx_ring[0].reg_idx = 0; |
| 2871 | adapter->tx_ring[0].reg_idx = 0; |
| 2872 | |
| 2873 | #ifdef CONFIG_IXGBE_DCB |
| 2874 | if (ixgbe_cache_ring_dcb(adapter)) |
| 2875 | return; |
| 2876 | |
| 2877 | #endif |
| 2878 | if (ixgbe_cache_ring_rss(adapter)) |
| 2879 | return; |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 2880 | } |
| 2881 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2882 | /** |
| 2883 | * ixgbe_alloc_queues - Allocate memory for all rings |
| 2884 | * @adapter: board private structure to initialize |
| 2885 | * |
| 2886 | * We allocate one ring per queue at run-time since we don't know the |
Jesse Brandeburg | 4df1046 | 2009-03-13 22:15:31 +0000 | [diff] [blame] | 2887 | * number of queues at compile-time. The polling_netdev array is |
| 2888 | * intended for Multiqueue, but should work fine with a single queue. |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2889 | **/ |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 2890 | static int ixgbe_alloc_queues(struct ixgbe_adapter *adapter) |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2891 | { |
| 2892 | int i; |
| 2893 | |
| 2894 | adapter->tx_ring = kcalloc(adapter->num_tx_queues, |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 2895 | sizeof(struct ixgbe_ring), GFP_KERNEL); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2896 | if (!adapter->tx_ring) |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 2897 | goto err_tx_ring_allocation; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2898 | |
| 2899 | adapter->rx_ring = kcalloc(adapter->num_rx_queues, |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 2900 | sizeof(struct ixgbe_ring), GFP_KERNEL); |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 2901 | if (!adapter->rx_ring) |
| 2902 | goto err_rx_ring_allocation; |
| 2903 | |
| 2904 | for (i = 0; i < adapter->num_tx_queues; i++) { |
Jesse Brandeburg | b980497 | 2008-09-11 20:00:29 -0700 | [diff] [blame] | 2905 | adapter->tx_ring[i].count = adapter->tx_ring_count; |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 2906 | adapter->tx_ring[i].queue_index = i; |
| 2907 | } |
Jesse Brandeburg | b980497 | 2008-09-11 20:00:29 -0700 | [diff] [blame] | 2908 | |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 2909 | for (i = 0; i < adapter->num_rx_queues; i++) { |
Jesse Brandeburg | b980497 | 2008-09-11 20:00:29 -0700 | [diff] [blame] | 2910 | adapter->rx_ring[i].count = adapter->rx_ring_count; |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 2911 | adapter->rx_ring[i].queue_index = i; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2912 | } |
| 2913 | |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 2914 | ixgbe_cache_ring_register(adapter); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 2915 | |
| 2916 | return 0; |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 2917 | |
| 2918 | err_rx_ring_allocation: |
| 2919 | kfree(adapter->tx_ring); |
| 2920 | err_tx_ring_allocation: |
| 2921 | return -ENOMEM; |
| 2922 | } |
| 2923 | |
| 2924 | /** |
| 2925 | * ixgbe_set_interrupt_capability - set MSI-X or MSI if supported |
| 2926 | * @adapter: board private structure to initialize |
| 2927 | * |
| 2928 | * Attempt to configure the interrupts using the best available |
| 2929 | * capabilities of the hardware and the kernel. |
| 2930 | **/ |
Al Viro | feea6a5 | 2008-11-27 15:34:07 -0800 | [diff] [blame] | 2931 | static int ixgbe_set_interrupt_capability(struct ixgbe_adapter *adapter) |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 2932 | { |
PJ Waskiewicz | 8be0e46 | 2009-03-31 21:34:05 +0000 | [diff] [blame] | 2933 | struct ixgbe_hw *hw = &adapter->hw; |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 2934 | int err = 0; |
| 2935 | int vector, v_budget; |
| 2936 | |
| 2937 | /* |
| 2938 | * It's easy to be greedy for MSI-X vectors, but it really |
| 2939 | * doesn't do us much good if we have a lot more vectors |
| 2940 | * than CPU's. So let's be conservative and only ask for |
| 2941 | * (roughly) twice the number of vectors as there are CPU's. |
| 2942 | */ |
| 2943 | v_budget = min(adapter->num_rx_queues + adapter->num_tx_queues, |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 2944 | (int)(num_online_cpus() * 2)) + NON_Q_VECTORS; |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 2945 | |
| 2946 | /* |
| 2947 | * At the same time, hardware can only support a maximum of |
PJ Waskiewicz | 8be0e46 | 2009-03-31 21:34:05 +0000 | [diff] [blame] | 2948 | * hw.mac->max_msix_vectors vectors. With features |
| 2949 | * such as RSS and VMDq, we can easily surpass the number of Rx and Tx |
| 2950 | * descriptor queues supported by our device. Thus, we cap it off in |
| 2951 | * those rare cases where the cpu count also exceeds our vector limit. |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 2952 | */ |
PJ Waskiewicz | 8be0e46 | 2009-03-31 21:34:05 +0000 | [diff] [blame] | 2953 | v_budget = min(v_budget, (int)hw->mac.max_msix_vectors); |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 2954 | |
| 2955 | /* A failure in MSI-X entry allocation isn't fatal, but it does |
| 2956 | * mean we disable MSI-X capabilities of the adapter. */ |
| 2957 | adapter->msix_entries = kcalloc(v_budget, |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 2958 | sizeof(struct msix_entry), GFP_KERNEL); |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 2959 | if (!adapter->msix_entries) { |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 2960 | adapter->flags &= ~IXGBE_FLAG_DCB_ENABLED; |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 2961 | adapter->flags &= ~IXGBE_FLAG_RSS_ENABLED; |
| 2962 | ixgbe_set_num_queues(adapter); |
| 2963 | kfree(adapter->tx_ring); |
| 2964 | kfree(adapter->rx_ring); |
| 2965 | err = ixgbe_alloc_queues(adapter); |
| 2966 | if (err) { |
| 2967 | DPRINTK(PROBE, ERR, "Unable to allocate memory " |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 2968 | "for queues\n"); |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 2969 | goto out; |
| 2970 | } |
| 2971 | |
| 2972 | goto try_msi; |
| 2973 | } |
| 2974 | |
| 2975 | for (vector = 0; vector < v_budget; vector++) |
| 2976 | adapter->msix_entries[vector].entry = vector; |
| 2977 | |
| 2978 | ixgbe_acquire_msix_vectors(adapter, v_budget); |
| 2979 | |
| 2980 | if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) |
| 2981 | goto out; |
| 2982 | |
| 2983 | try_msi: |
| 2984 | err = pci_enable_msi(adapter->pdev); |
| 2985 | if (!err) { |
| 2986 | adapter->flags |= IXGBE_FLAG_MSI_ENABLED; |
| 2987 | } else { |
| 2988 | DPRINTK(HW, DEBUG, "Unable to allocate MSI interrupt, " |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 2989 | "falling back to legacy. Error: %d\n", err); |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 2990 | /* reset err */ |
| 2991 | err = 0; |
| 2992 | } |
| 2993 | |
| 2994 | out: |
Ayyappan Veeraiyan | 30eba97 | 2008-03-03 15:03:52 -0800 | [diff] [blame] | 2995 | /* Notify the stack of the (possibly) reduced Tx Queue count. */ |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 2996 | adapter->netdev->real_num_tx_queues = adapter->num_tx_queues; |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 2997 | |
| 2998 | return err; |
| 2999 | } |
| 3000 | |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 3001 | void ixgbe_reset_interrupt_capability(struct ixgbe_adapter *adapter) |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 3002 | { |
| 3003 | if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) { |
| 3004 | adapter->flags &= ~IXGBE_FLAG_MSIX_ENABLED; |
| 3005 | pci_disable_msix(adapter->pdev); |
| 3006 | kfree(adapter->msix_entries); |
| 3007 | adapter->msix_entries = NULL; |
| 3008 | } else if (adapter->flags & IXGBE_FLAG_MSI_ENABLED) { |
| 3009 | adapter->flags &= ~IXGBE_FLAG_MSI_ENABLED; |
| 3010 | pci_disable_msi(adapter->pdev); |
| 3011 | } |
| 3012 | return; |
| 3013 | } |
| 3014 | |
| 3015 | /** |
| 3016 | * ixgbe_init_interrupt_scheme - Determine proper interrupt scheme |
| 3017 | * @adapter: board private structure to initialize |
| 3018 | * |
| 3019 | * We determine which interrupt scheme to use based on... |
| 3020 | * - Kernel support (MSI, MSI-X) |
| 3021 | * - which can be user-defined (via MODULE_PARAM) |
| 3022 | * - Hardware queue count (num_*_queues) |
| 3023 | * - defined by miscellaneous hardware support/features (RSS, etc.) |
| 3024 | **/ |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 3025 | int ixgbe_init_interrupt_scheme(struct ixgbe_adapter *adapter) |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 3026 | { |
| 3027 | int err; |
| 3028 | |
| 3029 | /* Number of supported queues */ |
| 3030 | ixgbe_set_num_queues(adapter); |
| 3031 | |
| 3032 | err = ixgbe_alloc_queues(adapter); |
| 3033 | if (err) { |
| 3034 | DPRINTK(PROBE, ERR, "Unable to allocate memory for queues\n"); |
| 3035 | goto err_alloc_queues; |
| 3036 | } |
| 3037 | |
| 3038 | err = ixgbe_set_interrupt_capability(adapter); |
| 3039 | if (err) { |
| 3040 | DPRINTK(PROBE, ERR, "Unable to setup interrupt capabilities\n"); |
| 3041 | goto err_set_interrupt; |
| 3042 | } |
| 3043 | |
| 3044 | DPRINTK(DRV, INFO, "Multiqueue %s: Rx Queue count = %u, " |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 3045 | "Tx Queue count = %u\n", |
| 3046 | (adapter->num_rx_queues > 1) ? "Enabled" : |
| 3047 | "Disabled", adapter->num_rx_queues, adapter->num_tx_queues); |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 3048 | |
| 3049 | set_bit(__IXGBE_DOWN, &adapter->state); |
| 3050 | |
| 3051 | return 0; |
| 3052 | |
| 3053 | err_set_interrupt: |
| 3054 | kfree(adapter->tx_ring); |
| 3055 | kfree(adapter->rx_ring); |
| 3056 | err_alloc_queues: |
| 3057 | return err; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3058 | } |
| 3059 | |
| 3060 | /** |
Donald Skidmore | c4900be | 2008-11-20 21:11:42 -0800 | [diff] [blame] | 3061 | * ixgbe_sfp_timer - worker thread to find a missing module |
| 3062 | * @data: pointer to our adapter struct |
| 3063 | **/ |
| 3064 | static void ixgbe_sfp_timer(unsigned long data) |
| 3065 | { |
| 3066 | struct ixgbe_adapter *adapter = (struct ixgbe_adapter *)data; |
| 3067 | |
Jesse Brandeburg | 4df1046 | 2009-03-13 22:15:31 +0000 | [diff] [blame] | 3068 | /* |
| 3069 | * Do the sfp_timer outside of interrupt context due to the |
Donald Skidmore | c4900be | 2008-11-20 21:11:42 -0800 | [diff] [blame] | 3070 | * delays that sfp+ detection requires |
| 3071 | */ |
| 3072 | schedule_work(&adapter->sfp_task); |
| 3073 | } |
| 3074 | |
| 3075 | /** |
| 3076 | * ixgbe_sfp_task - worker thread to find a missing module |
| 3077 | * @work: pointer to work_struct containing our data |
| 3078 | **/ |
| 3079 | static void ixgbe_sfp_task(struct work_struct *work) |
| 3080 | { |
| 3081 | struct ixgbe_adapter *adapter = container_of(work, |
| 3082 | struct ixgbe_adapter, |
| 3083 | sfp_task); |
| 3084 | struct ixgbe_hw *hw = &adapter->hw; |
| 3085 | |
| 3086 | if ((hw->phy.type == ixgbe_phy_nl) && |
| 3087 | (hw->phy.sfp_type == ixgbe_sfp_type_not_present)) { |
| 3088 | s32 ret = hw->phy.ops.identify_sfp(hw); |
| 3089 | if (ret) |
| 3090 | goto reschedule; |
| 3091 | ret = hw->phy.ops.reset(hw); |
| 3092 | if (ret == IXGBE_ERR_SFP_NOT_SUPPORTED) { |
| 3093 | DPRINTK(PROBE, ERR, "failed to initialize because an " |
| 3094 | "unsupported SFP+ module type was detected.\n" |
| 3095 | "Reload the driver after installing a " |
| 3096 | "supported module.\n"); |
| 3097 | unregister_netdev(adapter->netdev); |
| 3098 | } else { |
| 3099 | DPRINTK(PROBE, INFO, "detected SFP+: %d\n", |
| 3100 | hw->phy.sfp_type); |
| 3101 | } |
| 3102 | /* don't need this routine any more */ |
| 3103 | clear_bit(__IXGBE_SFP_MODULE_NOT_FOUND, &adapter->state); |
| 3104 | } |
| 3105 | return; |
| 3106 | reschedule: |
| 3107 | if (test_bit(__IXGBE_SFP_MODULE_NOT_FOUND, &adapter->state)) |
| 3108 | mod_timer(&adapter->sfp_timer, |
| 3109 | round_jiffies(jiffies + (2 * HZ))); |
| 3110 | } |
| 3111 | |
| 3112 | /** |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3113 | * ixgbe_sw_init - Initialize general software structures (struct ixgbe_adapter) |
| 3114 | * @adapter: board private structure to initialize |
| 3115 | * |
| 3116 | * ixgbe_sw_init initializes the Adapter private data structure. |
| 3117 | * Fields are initialized based on PCI device information and |
| 3118 | * OS network device settings (MTU size). |
| 3119 | **/ |
| 3120 | static int __devinit ixgbe_sw_init(struct ixgbe_adapter *adapter) |
| 3121 | { |
| 3122 | struct ixgbe_hw *hw = &adapter->hw; |
| 3123 | struct pci_dev *pdev = adapter->pdev; |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 3124 | unsigned int rss; |
Jeff Kirsher | 7a6b6f5 | 2008-11-25 01:02:08 -0800 | [diff] [blame] | 3125 | #ifdef CONFIG_IXGBE_DCB |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 3126 | int j; |
| 3127 | struct tc_configuration *tc; |
| 3128 | #endif |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 3129 | |
Jesse Brandeburg | c44ade9 | 2008-09-11 19:59:59 -0700 | [diff] [blame] | 3130 | /* PCI config space info */ |
| 3131 | |
| 3132 | hw->vendor_id = pdev->vendor; |
| 3133 | hw->device_id = pdev->device; |
| 3134 | hw->revision_id = pdev->revision; |
| 3135 | hw->subsystem_vendor_id = pdev->subsystem_vendor; |
| 3136 | hw->subsystem_device_id = pdev->subsystem_device; |
| 3137 | |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 3138 | /* Set capability flags */ |
| 3139 | rss = min(IXGBE_MAX_RSS_INDICES, (int)num_online_cpus()); |
| 3140 | adapter->ring_feature[RING_F_RSS].indices = rss; |
| 3141 | adapter->flags |= IXGBE_FLAG_RSS_ENABLED; |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 3142 | adapter->ring_feature[RING_F_DCB].indices = IXGBE_MAX_DCB_INDICES; |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 3143 | if (hw->mac.type == ixgbe_mac_82598EB) |
| 3144 | adapter->max_msix_q_vectors = MAX_MSIX_Q_VECTORS_82598; |
| 3145 | else if (hw->mac.type == ixgbe_mac_82599EB) |
| 3146 | adapter->max_msix_q_vectors = MAX_MSIX_Q_VECTORS_82599; |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 3147 | |
Jeff Kirsher | 7a6b6f5 | 2008-11-25 01:02:08 -0800 | [diff] [blame] | 3148 | #ifdef CONFIG_IXGBE_DCB |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 3149 | /* Configure DCB traffic classes */ |
| 3150 | for (j = 0; j < MAX_TRAFFIC_CLASS; j++) { |
| 3151 | tc = &adapter->dcb_cfg.tc_config[j]; |
| 3152 | tc->path[DCB_TX_CONFIG].bwg_id = 0; |
| 3153 | tc->path[DCB_TX_CONFIG].bwg_percent = 12 + (j & 1); |
| 3154 | tc->path[DCB_RX_CONFIG].bwg_id = 0; |
| 3155 | tc->path[DCB_RX_CONFIG].bwg_percent = 12 + (j & 1); |
| 3156 | tc->dcb_pfc = pfc_disabled; |
| 3157 | } |
| 3158 | adapter->dcb_cfg.bw_percentage[DCB_TX_CONFIG][0] = 100; |
| 3159 | adapter->dcb_cfg.bw_percentage[DCB_RX_CONFIG][0] = 100; |
| 3160 | adapter->dcb_cfg.rx_pba_cfg = pba_equal; |
| 3161 | adapter->dcb_cfg.round_robin_enable = false; |
| 3162 | adapter->dcb_set_bitmap = 0x00; |
| 3163 | ixgbe_copy_dcb_cfg(&adapter->dcb_cfg, &adapter->temp_dcb_cfg, |
| 3164 | adapter->ring_feature[RING_F_DCB].indices); |
| 3165 | |
| 3166 | #endif |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3167 | |
| 3168 | /* default flow control settings */ |
Don Skidmore | cd7664f | 2009-03-31 21:33:44 +0000 | [diff] [blame] | 3169 | hw->fc.requested_mode = ixgbe_fc_full; |
Don Skidmore | 71fd570 | 2009-03-31 21:35:05 +0000 | [diff] [blame] | 3170 | hw->fc.current_mode = ixgbe_fc_full; /* init for ethtool output */ |
Jesse Brandeburg | 2b9ade9 | 2008-08-26 04:27:10 -0700 | [diff] [blame] | 3171 | hw->fc.high_water = IXGBE_DEFAULT_FCRTH; |
| 3172 | hw->fc.low_water = IXGBE_DEFAULT_FCRTL; |
| 3173 | hw->fc.pause_time = IXGBE_DEFAULT_FCPAUSE; |
| 3174 | hw->fc.send_xon = true; |
Don Skidmore | 71fd570 | 2009-03-31 21:35:05 +0000 | [diff] [blame] | 3175 | hw->fc.disable_fc_autoneg = false; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3176 | |
Jesse Brandeburg | 30efa5a | 2008-09-11 19:58:14 -0700 | [diff] [blame] | 3177 | /* enable itr by default in dynamic mode */ |
| 3178 | adapter->itr_setting = 1; |
| 3179 | adapter->eitr_param = 20000; |
| 3180 | |
| 3181 | /* set defaults for eitr in MegaBytes */ |
| 3182 | adapter->eitr_low = 10; |
| 3183 | adapter->eitr_high = 20; |
| 3184 | |
| 3185 | /* set default ring sizes */ |
| 3186 | adapter->tx_ring_count = IXGBE_DEFAULT_TXD; |
| 3187 | adapter->rx_ring_count = IXGBE_DEFAULT_RXD; |
| 3188 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3189 | /* initialize eeprom parameters */ |
Jesse Brandeburg | c44ade9 | 2008-09-11 19:59:59 -0700 | [diff] [blame] | 3190 | if (ixgbe_init_eeprom_params_generic(hw)) { |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3191 | dev_err(&pdev->dev, "EEPROM initialization failed\n"); |
| 3192 | return -EIO; |
| 3193 | } |
| 3194 | |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 3195 | /* enable rx csum by default */ |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3196 | adapter->flags |= IXGBE_FLAG_RX_CSUM_ENABLED; |
| 3197 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3198 | set_bit(__IXGBE_DOWN, &adapter->state); |
| 3199 | |
| 3200 | return 0; |
| 3201 | } |
| 3202 | |
| 3203 | /** |
| 3204 | * ixgbe_setup_tx_resources - allocate Tx resources (Descriptors) |
| 3205 | * @adapter: board private structure |
Jesse Brandeburg | 3a58107 | 2008-08-26 04:27:08 -0700 | [diff] [blame] | 3206 | * @tx_ring: tx descriptor ring (for a specific queue) to setup |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3207 | * |
| 3208 | * Return 0 on success, negative on failure |
| 3209 | **/ |
| 3210 | int ixgbe_setup_tx_resources(struct ixgbe_adapter *adapter, |
Jesse Brandeburg | e01c31a | 2008-08-26 04:27:13 -0700 | [diff] [blame] | 3211 | struct ixgbe_ring *tx_ring) |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3212 | { |
| 3213 | struct pci_dev *pdev = adapter->pdev; |
| 3214 | int size; |
| 3215 | |
Jesse Brandeburg | 3a58107 | 2008-08-26 04:27:08 -0700 | [diff] [blame] | 3216 | size = sizeof(struct ixgbe_tx_buffer) * tx_ring->count; |
| 3217 | tx_ring->tx_buffer_info = vmalloc(size); |
Jesse Brandeburg | e01c31a | 2008-08-26 04:27:13 -0700 | [diff] [blame] | 3218 | if (!tx_ring->tx_buffer_info) |
| 3219 | goto err; |
Jesse Brandeburg | 3a58107 | 2008-08-26 04:27:08 -0700 | [diff] [blame] | 3220 | memset(tx_ring->tx_buffer_info, 0, size); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3221 | |
| 3222 | /* round up to nearest 4K */ |
Peter P Waskiewicz Jr | 12207e4 | 2009-02-06 21:47:24 -0800 | [diff] [blame] | 3223 | tx_ring->size = tx_ring->count * sizeof(union ixgbe_adv_tx_desc); |
Jesse Brandeburg | 3a58107 | 2008-08-26 04:27:08 -0700 | [diff] [blame] | 3224 | tx_ring->size = ALIGN(tx_ring->size, 4096); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3225 | |
Jesse Brandeburg | 3a58107 | 2008-08-26 04:27:08 -0700 | [diff] [blame] | 3226 | tx_ring->desc = pci_alloc_consistent(pdev, tx_ring->size, |
| 3227 | &tx_ring->dma); |
Jesse Brandeburg | e01c31a | 2008-08-26 04:27:13 -0700 | [diff] [blame] | 3228 | if (!tx_ring->desc) |
| 3229 | goto err; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3230 | |
Jesse Brandeburg | 3a58107 | 2008-08-26 04:27:08 -0700 | [diff] [blame] | 3231 | tx_ring->next_to_use = 0; |
| 3232 | tx_ring->next_to_clean = 0; |
| 3233 | tx_ring->work_limit = tx_ring->count; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3234 | return 0; |
Jesse Brandeburg | e01c31a | 2008-08-26 04:27:13 -0700 | [diff] [blame] | 3235 | |
| 3236 | err: |
| 3237 | vfree(tx_ring->tx_buffer_info); |
| 3238 | tx_ring->tx_buffer_info = NULL; |
| 3239 | DPRINTK(PROBE, ERR, "Unable to allocate memory for the transmit " |
| 3240 | "descriptor ring\n"); |
| 3241 | return -ENOMEM; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3242 | } |
| 3243 | |
| 3244 | /** |
Alexander Duyck | 6988867 | 2008-09-11 20:05:39 -0700 | [diff] [blame] | 3245 | * ixgbe_setup_all_tx_resources - allocate all queues Tx resources |
| 3246 | * @adapter: board private structure |
| 3247 | * |
| 3248 | * If this function returns with an error, then it's possible one or |
| 3249 | * more of the rings is populated (while the rest are not). It is the |
| 3250 | * callers duty to clean those orphaned rings. |
| 3251 | * |
| 3252 | * Return 0 on success, negative on failure |
| 3253 | **/ |
| 3254 | static int ixgbe_setup_all_tx_resources(struct ixgbe_adapter *adapter) |
| 3255 | { |
| 3256 | int i, err = 0; |
| 3257 | |
| 3258 | for (i = 0; i < adapter->num_tx_queues; i++) { |
| 3259 | err = ixgbe_setup_tx_resources(adapter, &adapter->tx_ring[i]); |
| 3260 | if (!err) |
| 3261 | continue; |
| 3262 | DPRINTK(PROBE, ERR, "Allocation for Tx Queue %u failed\n", i); |
| 3263 | break; |
| 3264 | } |
| 3265 | |
| 3266 | return err; |
| 3267 | } |
| 3268 | |
| 3269 | /** |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3270 | * ixgbe_setup_rx_resources - allocate Rx resources (Descriptors) |
| 3271 | * @adapter: board private structure |
Jesse Brandeburg | 3a58107 | 2008-08-26 04:27:08 -0700 | [diff] [blame] | 3272 | * @rx_ring: rx descriptor ring (for a specific queue) to setup |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3273 | * |
| 3274 | * Returns 0 on success, negative on failure |
| 3275 | **/ |
| 3276 | int ixgbe_setup_rx_resources(struct ixgbe_adapter *adapter, |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 3277 | struct ixgbe_ring *rx_ring) |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3278 | { |
| 3279 | struct pci_dev *pdev = adapter->pdev; |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 3280 | int size; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3281 | |
Jesse Brandeburg | 3a58107 | 2008-08-26 04:27:08 -0700 | [diff] [blame] | 3282 | size = sizeof(struct ixgbe_rx_buffer) * rx_ring->count; |
| 3283 | rx_ring->rx_buffer_info = vmalloc(size); |
| 3284 | if (!rx_ring->rx_buffer_info) { |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3285 | DPRINTK(PROBE, ERR, |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 3286 | "vmalloc allocation failed for the rx desc ring\n"); |
Mallikarjuna R Chilakala | 177db6f | 2008-06-18 15:32:19 -0700 | [diff] [blame] | 3287 | goto alloc_failed; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3288 | } |
Jesse Brandeburg | 3a58107 | 2008-08-26 04:27:08 -0700 | [diff] [blame] | 3289 | memset(rx_ring->rx_buffer_info, 0, size); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3290 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3291 | /* Round up to nearest 4K */ |
Jesse Brandeburg | 3a58107 | 2008-08-26 04:27:08 -0700 | [diff] [blame] | 3292 | rx_ring->size = rx_ring->count * sizeof(union ixgbe_adv_rx_desc); |
| 3293 | rx_ring->size = ALIGN(rx_ring->size, 4096); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3294 | |
Jesse Brandeburg | 3a58107 | 2008-08-26 04:27:08 -0700 | [diff] [blame] | 3295 | rx_ring->desc = pci_alloc_consistent(pdev, rx_ring->size, &rx_ring->dma); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3296 | |
Jesse Brandeburg | 3a58107 | 2008-08-26 04:27:08 -0700 | [diff] [blame] | 3297 | if (!rx_ring->desc) { |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3298 | DPRINTK(PROBE, ERR, |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 3299 | "Memory allocation failed for the rx desc ring\n"); |
Jesse Brandeburg | 3a58107 | 2008-08-26 04:27:08 -0700 | [diff] [blame] | 3300 | vfree(rx_ring->rx_buffer_info); |
Mallikarjuna R Chilakala | 177db6f | 2008-06-18 15:32:19 -0700 | [diff] [blame] | 3301 | goto alloc_failed; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3302 | } |
| 3303 | |
Jesse Brandeburg | 3a58107 | 2008-08-26 04:27:08 -0700 | [diff] [blame] | 3304 | rx_ring->next_to_clean = 0; |
| 3305 | rx_ring->next_to_use = 0; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3306 | |
| 3307 | return 0; |
Mallikarjuna R Chilakala | 177db6f | 2008-06-18 15:32:19 -0700 | [diff] [blame] | 3308 | |
| 3309 | alloc_failed: |
Mallikarjuna R Chilakala | 177db6f | 2008-06-18 15:32:19 -0700 | [diff] [blame] | 3310 | return -ENOMEM; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3311 | } |
| 3312 | |
| 3313 | /** |
Alexander Duyck | 6988867 | 2008-09-11 20:05:39 -0700 | [diff] [blame] | 3314 | * ixgbe_setup_all_rx_resources - allocate all queues Rx resources |
| 3315 | * @adapter: board private structure |
| 3316 | * |
| 3317 | * If this function returns with an error, then it's possible one or |
| 3318 | * more of the rings is populated (while the rest are not). It is the |
| 3319 | * callers duty to clean those orphaned rings. |
| 3320 | * |
| 3321 | * Return 0 on success, negative on failure |
| 3322 | **/ |
| 3323 | |
| 3324 | static int ixgbe_setup_all_rx_resources(struct ixgbe_adapter *adapter) |
| 3325 | { |
| 3326 | int i, err = 0; |
| 3327 | |
| 3328 | for (i = 0; i < adapter->num_rx_queues; i++) { |
| 3329 | err = ixgbe_setup_rx_resources(adapter, &adapter->rx_ring[i]); |
| 3330 | if (!err) |
| 3331 | continue; |
| 3332 | DPRINTK(PROBE, ERR, "Allocation for Rx Queue %u failed\n", i); |
| 3333 | break; |
| 3334 | } |
| 3335 | |
| 3336 | return err; |
| 3337 | } |
| 3338 | |
| 3339 | /** |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3340 | * ixgbe_free_tx_resources - Free Tx Resources per Queue |
| 3341 | * @adapter: board private structure |
| 3342 | * @tx_ring: Tx descriptor ring for a specific queue |
| 3343 | * |
| 3344 | * Free all transmit software resources |
| 3345 | **/ |
Jesse Brandeburg | c431f97 | 2008-09-11 19:59:16 -0700 | [diff] [blame] | 3346 | void ixgbe_free_tx_resources(struct ixgbe_adapter *adapter, |
| 3347 | struct ixgbe_ring *tx_ring) |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3348 | { |
| 3349 | struct pci_dev *pdev = adapter->pdev; |
| 3350 | |
| 3351 | ixgbe_clean_tx_ring(adapter, tx_ring); |
| 3352 | |
| 3353 | vfree(tx_ring->tx_buffer_info); |
| 3354 | tx_ring->tx_buffer_info = NULL; |
| 3355 | |
| 3356 | pci_free_consistent(pdev, tx_ring->size, tx_ring->desc, tx_ring->dma); |
| 3357 | |
| 3358 | tx_ring->desc = NULL; |
| 3359 | } |
| 3360 | |
| 3361 | /** |
| 3362 | * ixgbe_free_all_tx_resources - Free Tx Resources for All Queues |
| 3363 | * @adapter: board private structure |
| 3364 | * |
| 3365 | * Free all transmit software resources |
| 3366 | **/ |
| 3367 | static void ixgbe_free_all_tx_resources(struct ixgbe_adapter *adapter) |
| 3368 | { |
| 3369 | int i; |
| 3370 | |
| 3371 | for (i = 0; i < adapter->num_tx_queues; i++) |
Jesse Brandeburg | 9891ca7 | 2009-03-13 22:14:50 +0000 | [diff] [blame] | 3372 | if (adapter->tx_ring[i].desc) |
| 3373 | ixgbe_free_tx_resources(adapter, &adapter->tx_ring[i]); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3374 | } |
| 3375 | |
| 3376 | /** |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 3377 | * ixgbe_free_rx_resources - Free Rx Resources |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3378 | * @adapter: board private structure |
| 3379 | * @rx_ring: ring to clean the resources from |
| 3380 | * |
| 3381 | * Free all receive software resources |
| 3382 | **/ |
Jesse Brandeburg | c431f97 | 2008-09-11 19:59:16 -0700 | [diff] [blame] | 3383 | void ixgbe_free_rx_resources(struct ixgbe_adapter *adapter, |
| 3384 | struct ixgbe_ring *rx_ring) |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3385 | { |
| 3386 | struct pci_dev *pdev = adapter->pdev; |
| 3387 | |
| 3388 | ixgbe_clean_rx_ring(adapter, rx_ring); |
| 3389 | |
| 3390 | vfree(rx_ring->rx_buffer_info); |
| 3391 | rx_ring->rx_buffer_info = NULL; |
| 3392 | |
| 3393 | pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma); |
| 3394 | |
| 3395 | rx_ring->desc = NULL; |
| 3396 | } |
| 3397 | |
| 3398 | /** |
| 3399 | * ixgbe_free_all_rx_resources - Free Rx Resources for All Queues |
| 3400 | * @adapter: board private structure |
| 3401 | * |
| 3402 | * Free all receive software resources |
| 3403 | **/ |
| 3404 | static void ixgbe_free_all_rx_resources(struct ixgbe_adapter *adapter) |
| 3405 | { |
| 3406 | int i; |
| 3407 | |
| 3408 | for (i = 0; i < adapter->num_rx_queues; i++) |
Jesse Brandeburg | 9891ca7 | 2009-03-13 22:14:50 +0000 | [diff] [blame] | 3409 | if (adapter->rx_ring[i].desc) |
| 3410 | ixgbe_free_rx_resources(adapter, &adapter->rx_ring[i]); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3411 | } |
| 3412 | |
| 3413 | /** |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3414 | * ixgbe_change_mtu - Change the Maximum Transfer Unit |
| 3415 | * @netdev: network interface device structure |
| 3416 | * @new_mtu: new value for maximum frame size |
| 3417 | * |
| 3418 | * Returns 0 on success, negative on failure |
| 3419 | **/ |
| 3420 | static int ixgbe_change_mtu(struct net_device *netdev, int new_mtu) |
| 3421 | { |
| 3422 | struct ixgbe_adapter *adapter = netdev_priv(netdev); |
| 3423 | int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN; |
| 3424 | |
Jesse Brandeburg | 42c783c | 2008-09-11 19:56:28 -0700 | [diff] [blame] | 3425 | /* MTU < 68 is an error and causes problems on some kernels */ |
| 3426 | if ((new_mtu < 68) || (max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE)) |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3427 | return -EINVAL; |
| 3428 | |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 3429 | DPRINTK(PROBE, INFO, "changing MTU from %d to %d\n", |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 3430 | netdev->mtu, new_mtu); |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 3431 | /* must set new MTU before calling down or up */ |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3432 | netdev->mtu = new_mtu; |
| 3433 | |
Ayyappan Veeraiyan | d4f8088 | 2008-02-01 15:58:41 -0800 | [diff] [blame] | 3434 | if (netif_running(netdev)) |
| 3435 | ixgbe_reinit_locked(adapter); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3436 | |
| 3437 | return 0; |
| 3438 | } |
| 3439 | |
| 3440 | /** |
| 3441 | * ixgbe_open - Called when a network interface is made active |
| 3442 | * @netdev: network interface device structure |
| 3443 | * |
| 3444 | * Returns 0 on success, negative value on failure |
| 3445 | * |
| 3446 | * The open entry point is called when a network interface is made |
| 3447 | * active by the system (IFF_UP). At this point all resources needed |
| 3448 | * for transmit and receive operations are allocated, the interrupt |
| 3449 | * handler is registered with the OS, the watchdog timer is started, |
| 3450 | * and the stack is notified that the interface is ready. |
| 3451 | **/ |
| 3452 | static int ixgbe_open(struct net_device *netdev) |
| 3453 | { |
| 3454 | struct ixgbe_adapter *adapter = netdev_priv(netdev); |
| 3455 | int err; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3456 | |
Auke Kok | 4bebfaa | 2008-02-11 09:26:01 -0800 | [diff] [blame] | 3457 | /* disallow open during test */ |
| 3458 | if (test_bit(__IXGBE_TESTING, &adapter->state)) |
| 3459 | return -EBUSY; |
| 3460 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3461 | /* allocate transmit descriptors */ |
| 3462 | err = ixgbe_setup_all_tx_resources(adapter); |
| 3463 | if (err) |
| 3464 | goto err_setup_tx; |
| 3465 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3466 | /* allocate receive descriptors */ |
| 3467 | err = ixgbe_setup_all_rx_resources(adapter); |
| 3468 | if (err) |
| 3469 | goto err_setup_rx; |
| 3470 | |
| 3471 | ixgbe_configure(adapter); |
| 3472 | |
Jesse Brandeburg | 4dd64df | 2009-03-13 22:13:49 +0000 | [diff] [blame] | 3473 | ixgbe_napi_add_all(adapter); |
| 3474 | |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 3475 | err = ixgbe_request_irq(adapter); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3476 | if (err) |
| 3477 | goto err_req_irq; |
| 3478 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3479 | err = ixgbe_up_complete(adapter); |
| 3480 | if (err) |
| 3481 | goto err_up; |
| 3482 | |
Jeff Kirsher | d55b53f | 2008-07-18 04:33:03 -0700 | [diff] [blame] | 3483 | netif_tx_start_all_queues(netdev); |
| 3484 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3485 | return 0; |
| 3486 | |
| 3487 | err_up: |
Ayyappan Veeraiyan | 5eba369 | 2008-02-01 15:59:04 -0800 | [diff] [blame] | 3488 | ixgbe_release_hw_control(adapter); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3489 | ixgbe_free_irq(adapter); |
| 3490 | err_req_irq: |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3491 | err_setup_rx: |
Mallikarjuna R Chilakala | a20a119 | 2009-03-31 21:34:44 +0000 | [diff] [blame] | 3492 | ixgbe_free_all_rx_resources(adapter); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3493 | err_setup_tx: |
Mallikarjuna R Chilakala | a20a119 | 2009-03-31 21:34:44 +0000 | [diff] [blame] | 3494 | ixgbe_free_all_tx_resources(adapter); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3495 | ixgbe_reset(adapter); |
| 3496 | |
| 3497 | return err; |
| 3498 | } |
| 3499 | |
| 3500 | /** |
| 3501 | * ixgbe_close - Disables a network interface |
| 3502 | * @netdev: network interface device structure |
| 3503 | * |
| 3504 | * Returns 0, this is not allowed to fail |
| 3505 | * |
| 3506 | * The close entry point is called when an interface is de-activated |
| 3507 | * by the OS. The hardware is still under the drivers control, but |
| 3508 | * needs to be disabled. A global MAC reset is issued to stop the |
| 3509 | * hardware, and all transmit and receive resources are freed. |
| 3510 | **/ |
| 3511 | static int ixgbe_close(struct net_device *netdev) |
| 3512 | { |
| 3513 | struct ixgbe_adapter *adapter = netdev_priv(netdev); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3514 | |
| 3515 | ixgbe_down(adapter); |
| 3516 | ixgbe_free_irq(adapter); |
| 3517 | |
| 3518 | ixgbe_free_all_tx_resources(adapter); |
| 3519 | ixgbe_free_all_rx_resources(adapter); |
| 3520 | |
Ayyappan Veeraiyan | 5eba369 | 2008-02-01 15:59:04 -0800 | [diff] [blame] | 3521 | ixgbe_release_hw_control(adapter); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3522 | |
| 3523 | return 0; |
| 3524 | } |
| 3525 | |
| 3526 | /** |
Alexander Duyck | b3c8b4b | 2008-09-11 20:04:56 -0700 | [diff] [blame] | 3527 | * ixgbe_napi_add_all - prep napi structs for use |
| 3528 | * @adapter: private struct |
Jesse Brandeburg | 4dd64df | 2009-03-13 22:13:49 +0000 | [diff] [blame] | 3529 | * |
Alexander Duyck | b3c8b4b | 2008-09-11 20:04:56 -0700 | [diff] [blame] | 3530 | * helper function to napi_add each possible q_vector->napi |
| 3531 | */ |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 3532 | void ixgbe_napi_add_all(struct ixgbe_adapter *adapter) |
Alexander Duyck | b3c8b4b | 2008-09-11 20:04:56 -0700 | [diff] [blame] | 3533 | { |
| 3534 | int q_idx, q_vectors; |
Peter P Waskiewicz Jr | 7adf152 | 2008-12-26 01:36:05 -0800 | [diff] [blame] | 3535 | struct net_device *netdev = adapter->netdev; |
Alexander Duyck | b3c8b4b | 2008-09-11 20:04:56 -0700 | [diff] [blame] | 3536 | int (*poll)(struct napi_struct *, int); |
| 3537 | |
Peter P Waskiewicz Jr | 7adf152 | 2008-12-26 01:36:05 -0800 | [diff] [blame] | 3538 | /* check if we already have our netdev->napi_list populated */ |
| 3539 | if (&netdev->napi_list != netdev->napi_list.next) |
| 3540 | return; |
| 3541 | |
Alexander Duyck | b3c8b4b | 2008-09-11 20:04:56 -0700 | [diff] [blame] | 3542 | if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) { |
| 3543 | poll = &ixgbe_clean_rxonly; |
| 3544 | /* Only enable as many vectors as we have rx queues. */ |
| 3545 | q_vectors = adapter->num_rx_queues; |
| 3546 | } else { |
| 3547 | poll = &ixgbe_poll; |
| 3548 | /* only one q_vector for legacy modes */ |
| 3549 | q_vectors = 1; |
| 3550 | } |
| 3551 | |
| 3552 | for (q_idx = 0; q_idx < q_vectors; q_idx++) { |
| 3553 | struct ixgbe_q_vector *q_vector = &adapter->q_vector[q_idx]; |
| 3554 | netif_napi_add(adapter->netdev, &q_vector->napi, (*poll), 64); |
| 3555 | } |
| 3556 | } |
| 3557 | |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 3558 | void ixgbe_napi_del_all(struct ixgbe_adapter *adapter) |
Alexander Duyck | b3c8b4b | 2008-09-11 20:04:56 -0700 | [diff] [blame] | 3559 | { |
| 3560 | int q_idx; |
| 3561 | int q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS; |
| 3562 | |
| 3563 | /* legacy and MSI only use one vector */ |
| 3564 | if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED)) |
| 3565 | q_vectors = 1; |
| 3566 | |
| 3567 | for (q_idx = 0; q_idx < q_vectors; q_idx++) { |
| 3568 | struct ixgbe_q_vector *q_vector = &adapter->q_vector[q_idx]; |
| 3569 | if (!q_vector->rxr_count) |
| 3570 | continue; |
| 3571 | netif_napi_del(&q_vector->napi); |
| 3572 | } |
| 3573 | } |
| 3574 | |
| 3575 | #ifdef CONFIG_PM |
| 3576 | static int ixgbe_resume(struct pci_dev *pdev) |
| 3577 | { |
| 3578 | struct net_device *netdev = pci_get_drvdata(pdev); |
| 3579 | struct ixgbe_adapter *adapter = netdev_priv(netdev); |
| 3580 | u32 err; |
| 3581 | |
| 3582 | pci_set_power_state(pdev, PCI_D0); |
| 3583 | pci_restore_state(pdev); |
| 3584 | err = pci_enable_device(pdev); |
| 3585 | if (err) { |
Alexander Duyck | 6988867 | 2008-09-11 20:05:39 -0700 | [diff] [blame] | 3586 | printk(KERN_ERR "ixgbe: Cannot enable PCI device from " |
Alexander Duyck | b3c8b4b | 2008-09-11 20:04:56 -0700 | [diff] [blame] | 3587 | "suspend\n"); |
| 3588 | return err; |
| 3589 | } |
| 3590 | pci_set_master(pdev); |
| 3591 | |
| 3592 | pci_enable_wake(pdev, PCI_D3hot, 0); |
| 3593 | pci_enable_wake(pdev, PCI_D3cold, 0); |
| 3594 | |
| 3595 | err = ixgbe_init_interrupt_scheme(adapter); |
| 3596 | if (err) { |
| 3597 | printk(KERN_ERR "ixgbe: Cannot initialize interrupts for " |
| 3598 | "device\n"); |
| 3599 | return err; |
| 3600 | } |
| 3601 | |
Alexander Duyck | b3c8b4b | 2008-09-11 20:04:56 -0700 | [diff] [blame] | 3602 | ixgbe_reset(adapter); |
| 3603 | |
| 3604 | if (netif_running(netdev)) { |
| 3605 | err = ixgbe_open(adapter->netdev); |
| 3606 | if (err) |
| 3607 | return err; |
| 3608 | } |
| 3609 | |
| 3610 | netif_device_attach(netdev); |
| 3611 | |
| 3612 | return 0; |
| 3613 | } |
| 3614 | |
| 3615 | #endif /* CONFIG_PM */ |
| 3616 | static int ixgbe_suspend(struct pci_dev *pdev, pm_message_t state) |
| 3617 | { |
| 3618 | struct net_device *netdev = pci_get_drvdata(pdev); |
| 3619 | struct ixgbe_adapter *adapter = netdev_priv(netdev); |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 3620 | struct ixgbe_hw *hw = &adapter->hw; |
| 3621 | u32 ctrl, fctrl; |
| 3622 | u32 wufc = adapter->wol; |
Alexander Duyck | b3c8b4b | 2008-09-11 20:04:56 -0700 | [diff] [blame] | 3623 | #ifdef CONFIG_PM |
| 3624 | int retval = 0; |
| 3625 | #endif |
| 3626 | |
| 3627 | netif_device_detach(netdev); |
| 3628 | |
| 3629 | if (netif_running(netdev)) { |
| 3630 | ixgbe_down(adapter); |
| 3631 | ixgbe_free_irq(adapter); |
| 3632 | ixgbe_free_all_tx_resources(adapter); |
| 3633 | ixgbe_free_all_rx_resources(adapter); |
| 3634 | } |
| 3635 | ixgbe_reset_interrupt_capability(adapter); |
| 3636 | ixgbe_napi_del_all(adapter); |
Peter P Waskiewicz Jr | 7adf152 | 2008-12-26 01:36:05 -0800 | [diff] [blame] | 3637 | INIT_LIST_HEAD(&netdev->napi_list); |
Alexander Duyck | b3c8b4b | 2008-09-11 20:04:56 -0700 | [diff] [blame] | 3638 | kfree(adapter->tx_ring); |
| 3639 | kfree(adapter->rx_ring); |
| 3640 | |
| 3641 | #ifdef CONFIG_PM |
| 3642 | retval = pci_save_state(pdev); |
| 3643 | if (retval) |
| 3644 | return retval; |
Jesse Brandeburg | 4df1046 | 2009-03-13 22:15:31 +0000 | [diff] [blame] | 3645 | |
Alexander Duyck | b3c8b4b | 2008-09-11 20:04:56 -0700 | [diff] [blame] | 3646 | #endif |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 3647 | if (wufc) { |
| 3648 | ixgbe_set_rx_mode(netdev); |
Alexander Duyck | b3c8b4b | 2008-09-11 20:04:56 -0700 | [diff] [blame] | 3649 | |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 3650 | /* turn on all-multi mode if wake on multicast is enabled */ |
| 3651 | if (wufc & IXGBE_WUFC_MC) { |
| 3652 | fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL); |
| 3653 | fctrl |= IXGBE_FCTRL_MPE; |
| 3654 | IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl); |
| 3655 | } |
| 3656 | |
| 3657 | ctrl = IXGBE_READ_REG(hw, IXGBE_CTRL); |
| 3658 | ctrl |= IXGBE_CTRL_GIO_DIS; |
| 3659 | IXGBE_WRITE_REG(hw, IXGBE_CTRL, ctrl); |
| 3660 | |
| 3661 | IXGBE_WRITE_REG(hw, IXGBE_WUFC, wufc); |
| 3662 | } else { |
| 3663 | IXGBE_WRITE_REG(hw, IXGBE_WUC, 0); |
| 3664 | IXGBE_WRITE_REG(hw, IXGBE_WUFC, 0); |
| 3665 | } |
| 3666 | |
| 3667 | if (wufc && hw->mac.type == ixgbe_mac_82599EB) { |
| 3668 | pci_enable_wake(pdev, PCI_D3hot, 1); |
| 3669 | pci_enable_wake(pdev, PCI_D3cold, 1); |
| 3670 | } else { |
| 3671 | pci_enable_wake(pdev, PCI_D3hot, 0); |
| 3672 | pci_enable_wake(pdev, PCI_D3cold, 0); |
| 3673 | } |
Alexander Duyck | b3c8b4b | 2008-09-11 20:04:56 -0700 | [diff] [blame] | 3674 | |
| 3675 | ixgbe_release_hw_control(adapter); |
| 3676 | |
| 3677 | pci_disable_device(pdev); |
| 3678 | |
| 3679 | pci_set_power_state(pdev, pci_choose_state(pdev, state)); |
| 3680 | |
| 3681 | return 0; |
| 3682 | } |
| 3683 | |
| 3684 | static void ixgbe_shutdown(struct pci_dev *pdev) |
| 3685 | { |
| 3686 | ixgbe_suspend(pdev, PMSG_SUSPEND); |
| 3687 | } |
| 3688 | |
| 3689 | /** |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3690 | * ixgbe_update_stats - Update the board statistics counters. |
| 3691 | * @adapter: board private structure |
| 3692 | **/ |
| 3693 | void ixgbe_update_stats(struct ixgbe_adapter *adapter) |
| 3694 | { |
| 3695 | struct ixgbe_hw *hw = &adapter->hw; |
Ayyappan Veeraiyan | 6f11eef | 2008-02-01 15:59:14 -0800 | [diff] [blame] | 3696 | u64 total_mpc = 0; |
| 3697 | u32 i, missed_rx = 0, mpc, bprc, lxon, lxoff, xon_off_tot; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3698 | |
PJ Waskiewicz | d51019a | 2009-03-13 22:12:48 +0000 | [diff] [blame] | 3699 | if (hw->mac.type == ixgbe_mac_82599EB) { |
| 3700 | for (i = 0; i < 16; i++) |
| 3701 | adapter->hw_rx_no_dma_resources += |
| 3702 | IXGBE_READ_REG(hw, IXGBE_QPRDC(i)); |
| 3703 | } |
| 3704 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3705 | adapter->stats.crcerrs += IXGBE_READ_REG(hw, IXGBE_CRCERRS); |
Ayyappan Veeraiyan | 6f11eef | 2008-02-01 15:59:14 -0800 | [diff] [blame] | 3706 | for (i = 0; i < 8; i++) { |
| 3707 | /* for packet buffers not used, the register should read 0 */ |
| 3708 | mpc = IXGBE_READ_REG(hw, IXGBE_MPC(i)); |
| 3709 | missed_rx += mpc; |
| 3710 | adapter->stats.mpc[i] += mpc; |
| 3711 | total_mpc += adapter->stats.mpc[i]; |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 3712 | if (hw->mac.type == ixgbe_mac_82598EB) |
| 3713 | adapter->stats.rnbc[i] += IXGBE_READ_REG(hw, IXGBE_RNBC(i)); |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 3714 | adapter->stats.qptc[i] += IXGBE_READ_REG(hw, IXGBE_QPTC(i)); |
| 3715 | adapter->stats.qbtc[i] += IXGBE_READ_REG(hw, IXGBE_QBTC(i)); |
| 3716 | adapter->stats.qprc[i] += IXGBE_READ_REG(hw, IXGBE_QPRC(i)); |
| 3717 | adapter->stats.qbrc[i] += IXGBE_READ_REG(hw, IXGBE_QBRC(i)); |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 3718 | if (hw->mac.type == ixgbe_mac_82599EB) { |
| 3719 | adapter->stats.pxonrxc[i] += IXGBE_READ_REG(hw, |
| 3720 | IXGBE_PXONRXCNT(i)); |
| 3721 | adapter->stats.pxoffrxc[i] += IXGBE_READ_REG(hw, |
| 3722 | IXGBE_PXOFFRXCNT(i)); |
| 3723 | adapter->stats.qprdc[i] += IXGBE_READ_REG(hw, IXGBE_QPRDC(i)); |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 3724 | } else { |
| 3725 | adapter->stats.pxonrxc[i] += IXGBE_READ_REG(hw, |
| 3726 | IXGBE_PXONRXC(i)); |
| 3727 | adapter->stats.pxoffrxc[i] += IXGBE_READ_REG(hw, |
| 3728 | IXGBE_PXOFFRXC(i)); |
| 3729 | } |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 3730 | adapter->stats.pxontxc[i] += IXGBE_READ_REG(hw, |
| 3731 | IXGBE_PXONTXC(i)); |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 3732 | adapter->stats.pxofftxc[i] += IXGBE_READ_REG(hw, |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 3733 | IXGBE_PXOFFTXC(i)); |
Ayyappan Veeraiyan | 6f11eef | 2008-02-01 15:59:14 -0800 | [diff] [blame] | 3734 | } |
| 3735 | adapter->stats.gprc += IXGBE_READ_REG(hw, IXGBE_GPRC); |
| 3736 | /* work around hardware counting issue */ |
| 3737 | adapter->stats.gprc -= missed_rx; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3738 | |
Ayyappan Veeraiyan | 6f11eef | 2008-02-01 15:59:14 -0800 | [diff] [blame] | 3739 | /* 82598 hardware only has a 32 bit counter in the high register */ |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 3740 | if (hw->mac.type == ixgbe_mac_82599EB) { |
| 3741 | adapter->stats.gorc += IXGBE_READ_REG(hw, IXGBE_GORCL); |
| 3742 | IXGBE_READ_REG(hw, IXGBE_GORCH); /* to clear */ |
| 3743 | adapter->stats.gotc += IXGBE_READ_REG(hw, IXGBE_GOTCL); |
| 3744 | IXGBE_READ_REG(hw, IXGBE_GOTCH); /* to clear */ |
| 3745 | adapter->stats.tor += IXGBE_READ_REG(hw, IXGBE_TORL); |
| 3746 | IXGBE_READ_REG(hw, IXGBE_TORH); /* to clear */ |
| 3747 | adapter->stats.lxonrxc += IXGBE_READ_REG(hw, IXGBE_LXONRXCNT); |
| 3748 | adapter->stats.lxoffrxc += IXGBE_READ_REG(hw, IXGBE_LXOFFRXCNT); |
| 3749 | } else { |
| 3750 | adapter->stats.lxonrxc += IXGBE_READ_REG(hw, IXGBE_LXONRXC); |
| 3751 | adapter->stats.lxoffrxc += IXGBE_READ_REG(hw, IXGBE_LXOFFRXC); |
| 3752 | adapter->stats.gorc += IXGBE_READ_REG(hw, IXGBE_GORCH); |
| 3753 | adapter->stats.gotc += IXGBE_READ_REG(hw, IXGBE_GOTCH); |
| 3754 | adapter->stats.tor += IXGBE_READ_REG(hw, IXGBE_TORH); |
| 3755 | } |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3756 | bprc = IXGBE_READ_REG(hw, IXGBE_BPRC); |
| 3757 | adapter->stats.bprc += bprc; |
| 3758 | adapter->stats.mprc += IXGBE_READ_REG(hw, IXGBE_MPRC); |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 3759 | if (hw->mac.type == ixgbe_mac_82598EB) |
| 3760 | adapter->stats.mprc -= bprc; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3761 | adapter->stats.roc += IXGBE_READ_REG(hw, IXGBE_ROC); |
| 3762 | adapter->stats.prc64 += IXGBE_READ_REG(hw, IXGBE_PRC64); |
| 3763 | adapter->stats.prc127 += IXGBE_READ_REG(hw, IXGBE_PRC127); |
| 3764 | adapter->stats.prc255 += IXGBE_READ_REG(hw, IXGBE_PRC255); |
| 3765 | adapter->stats.prc511 += IXGBE_READ_REG(hw, IXGBE_PRC511); |
| 3766 | adapter->stats.prc1023 += IXGBE_READ_REG(hw, IXGBE_PRC1023); |
| 3767 | adapter->stats.prc1522 += IXGBE_READ_REG(hw, IXGBE_PRC1522); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3768 | adapter->stats.rlec += IXGBE_READ_REG(hw, IXGBE_RLEC); |
Ayyappan Veeraiyan | 6f11eef | 2008-02-01 15:59:14 -0800 | [diff] [blame] | 3769 | lxon = IXGBE_READ_REG(hw, IXGBE_LXONTXC); |
| 3770 | adapter->stats.lxontxc += lxon; |
| 3771 | lxoff = IXGBE_READ_REG(hw, IXGBE_LXOFFTXC); |
| 3772 | adapter->stats.lxofftxc += lxoff; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3773 | adapter->stats.ruc += IXGBE_READ_REG(hw, IXGBE_RUC); |
| 3774 | adapter->stats.gptc += IXGBE_READ_REG(hw, IXGBE_GPTC); |
Ayyappan Veeraiyan | 6f11eef | 2008-02-01 15:59:14 -0800 | [diff] [blame] | 3775 | adapter->stats.mptc += IXGBE_READ_REG(hw, IXGBE_MPTC); |
| 3776 | /* |
| 3777 | * 82598 errata - tx of flow control packets is included in tx counters |
| 3778 | */ |
| 3779 | xon_off_tot = lxon + lxoff; |
| 3780 | adapter->stats.gptc -= xon_off_tot; |
| 3781 | adapter->stats.mptc -= xon_off_tot; |
| 3782 | adapter->stats.gotc -= (xon_off_tot * (ETH_ZLEN + ETH_FCS_LEN)); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3783 | adapter->stats.ruc += IXGBE_READ_REG(hw, IXGBE_RUC); |
| 3784 | adapter->stats.rfc += IXGBE_READ_REG(hw, IXGBE_RFC); |
| 3785 | adapter->stats.rjc += IXGBE_READ_REG(hw, IXGBE_RJC); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3786 | adapter->stats.tpr += IXGBE_READ_REG(hw, IXGBE_TPR); |
| 3787 | adapter->stats.ptc64 += IXGBE_READ_REG(hw, IXGBE_PTC64); |
Ayyappan Veeraiyan | 6f11eef | 2008-02-01 15:59:14 -0800 | [diff] [blame] | 3788 | adapter->stats.ptc64 -= xon_off_tot; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3789 | adapter->stats.ptc127 += IXGBE_READ_REG(hw, IXGBE_PTC127); |
| 3790 | adapter->stats.ptc255 += IXGBE_READ_REG(hw, IXGBE_PTC255); |
| 3791 | adapter->stats.ptc511 += IXGBE_READ_REG(hw, IXGBE_PTC511); |
| 3792 | adapter->stats.ptc1023 += IXGBE_READ_REG(hw, IXGBE_PTC1023); |
| 3793 | adapter->stats.ptc1522 += IXGBE_READ_REG(hw, IXGBE_PTC1522); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3794 | adapter->stats.bptc += IXGBE_READ_REG(hw, IXGBE_BPTC); |
| 3795 | |
| 3796 | /* Fill out the OS statistics structure */ |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3797 | adapter->net_stats.multicast = adapter->stats.mprc; |
| 3798 | |
| 3799 | /* Rx Errors */ |
| 3800 | adapter->net_stats.rx_errors = adapter->stats.crcerrs + |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 3801 | adapter->stats.rlec; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3802 | adapter->net_stats.rx_dropped = 0; |
| 3803 | adapter->net_stats.rx_length_errors = adapter->stats.rlec; |
| 3804 | adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs; |
Ayyappan Veeraiyan | 6f11eef | 2008-02-01 15:59:14 -0800 | [diff] [blame] | 3805 | adapter->net_stats.rx_missed_errors = total_mpc; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3806 | } |
| 3807 | |
| 3808 | /** |
| 3809 | * ixgbe_watchdog - Timer Call-back |
| 3810 | * @data: pointer to adapter cast into an unsigned long |
| 3811 | **/ |
| 3812 | static void ixgbe_watchdog(unsigned long data) |
| 3813 | { |
| 3814 | struct ixgbe_adapter *adapter = (struct ixgbe_adapter *)data; |
Jesse Brandeburg | cf8280e | 2008-09-11 19:55:32 -0700 | [diff] [blame] | 3815 | struct ixgbe_hw *hw = &adapter->hw; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3816 | |
Jesse Brandeburg | cf8280e | 2008-09-11 19:55:32 -0700 | [diff] [blame] | 3817 | /* Do the watchdog outside of interrupt context due to the lovely |
| 3818 | * delays that some of the newer hardware requires */ |
| 3819 | if (!test_bit(__IXGBE_DOWN, &adapter->state)) { |
Jesse Brandeburg | 22d5a71 | 2009-03-19 01:24:04 +0000 | [diff] [blame] | 3820 | u64 eics = 0; |
| 3821 | int i; |
| 3822 | |
| 3823 | for (i = 0; i < adapter->num_msix_vectors - NON_Q_VECTORS; i++) |
| 3824 | eics |= (1 << i); |
| 3825 | |
Jesse Brandeburg | cf8280e | 2008-09-11 19:55:32 -0700 | [diff] [blame] | 3826 | /* Cause software interrupt to ensure rx rings are cleaned */ |
Jesse Brandeburg | 22d5a71 | 2009-03-19 01:24:04 +0000 | [diff] [blame] | 3827 | switch (hw->mac.type) { |
| 3828 | case ixgbe_mac_82598EB: |
| 3829 | if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) { |
| 3830 | IXGBE_WRITE_REG(hw, IXGBE_EICS, (u32)eics); |
| 3831 | } else { |
| 3832 | /* |
| 3833 | * for legacy and MSI interrupts don't set any |
| 3834 | * bits that are enabled for EIAM, because this |
| 3835 | * operation would set *both* EIMS and EICS for |
| 3836 | * any bit in EIAM |
| 3837 | */ |
| 3838 | IXGBE_WRITE_REG(hw, IXGBE_EICS, |
| 3839 | (IXGBE_EICS_TCP_TIMER | IXGBE_EICS_OTHER)); |
| 3840 | } |
| 3841 | break; |
| 3842 | case ixgbe_mac_82599EB: |
| 3843 | if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) { |
| 3844 | /* |
| 3845 | * EICS(0..15) first 0-15 q vectors |
| 3846 | * EICS[1] (16..31) q vectors 16-31 |
| 3847 | * EICS[2] (0..31) q vectors 32-63 |
| 3848 | */ |
| 3849 | IXGBE_WRITE_REG(hw, IXGBE_EICS, |
| 3850 | (u32)(eics & 0xFFFF)); |
| 3851 | IXGBE_WRITE_REG(hw, IXGBE_EICS_EX(1), |
| 3852 | (u32)(eics & 0xFFFF0000)); |
| 3853 | IXGBE_WRITE_REG(hw, IXGBE_EICS_EX(2), |
| 3854 | (u32)(eics >> 32)); |
| 3855 | } else { |
| 3856 | /* |
| 3857 | * for legacy and MSI interrupts don't set any |
| 3858 | * bits that are enabled for EIAM, because this |
| 3859 | * operation would set *both* EIMS and EICS for |
| 3860 | * any bit in EIAM |
| 3861 | */ |
| 3862 | IXGBE_WRITE_REG(hw, IXGBE_EICS, |
| 3863 | (IXGBE_EICS_TCP_TIMER | IXGBE_EICS_OTHER)); |
| 3864 | } |
| 3865 | break; |
| 3866 | default: |
| 3867 | break; |
Jesse Brandeburg | cf8280e | 2008-09-11 19:55:32 -0700 | [diff] [blame] | 3868 | } |
| 3869 | /* Reset the timer */ |
| 3870 | mod_timer(&adapter->watchdog_timer, |
| 3871 | round_jiffies(jiffies + 2 * HZ)); |
| 3872 | } |
| 3873 | |
| 3874 | schedule_work(&adapter->watchdog_task); |
| 3875 | } |
| 3876 | |
| 3877 | /** |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 3878 | * ixgbe_multispeed_fiber_task - worker thread to configure multispeed fiber |
| 3879 | * @work: pointer to work_struct containing our data |
| 3880 | **/ |
| 3881 | static void ixgbe_multispeed_fiber_task(struct work_struct *work) |
| 3882 | { |
| 3883 | struct ixgbe_adapter *adapter = container_of(work, |
| 3884 | struct ixgbe_adapter, |
| 3885 | multispeed_fiber_task); |
| 3886 | struct ixgbe_hw *hw = &adapter->hw; |
| 3887 | u32 autoneg; |
| 3888 | |
| 3889 | adapter->flags |= IXGBE_FLAG_IN_SFP_LINK_TASK; |
| 3890 | if (hw->mac.ops.get_link_capabilities) |
| 3891 | hw->mac.ops.get_link_capabilities(hw, &autoneg, |
| 3892 | &hw->mac.autoneg); |
| 3893 | if (hw->mac.ops.setup_link_speed) |
| 3894 | hw->mac.ops.setup_link_speed(hw, autoneg, true, true); |
| 3895 | adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE; |
| 3896 | adapter->flags &= ~IXGBE_FLAG_IN_SFP_LINK_TASK; |
| 3897 | } |
| 3898 | |
| 3899 | /** |
| 3900 | * ixgbe_sfp_config_module_task - worker thread to configure a new SFP+ module |
| 3901 | * @work: pointer to work_struct containing our data |
| 3902 | **/ |
| 3903 | static void ixgbe_sfp_config_module_task(struct work_struct *work) |
| 3904 | { |
| 3905 | struct ixgbe_adapter *adapter = container_of(work, |
| 3906 | struct ixgbe_adapter, |
| 3907 | sfp_config_module_task); |
| 3908 | struct ixgbe_hw *hw = &adapter->hw; |
| 3909 | u32 err; |
| 3910 | |
| 3911 | adapter->flags |= IXGBE_FLAG_IN_SFP_MOD_TASK; |
| 3912 | err = hw->phy.ops.identify_sfp(hw); |
| 3913 | if (err == IXGBE_ERR_SFP_NOT_SUPPORTED) { |
| 3914 | DPRINTK(PROBE, ERR, "PHY not supported on this NIC %d\n", err); |
| 3915 | ixgbe_down(adapter); |
| 3916 | return; |
| 3917 | } |
| 3918 | hw->mac.ops.setup_sfp(hw); |
| 3919 | |
| 3920 | if (!adapter->flags & IXGBE_FLAG_IN_SFP_LINK_TASK) |
| 3921 | /* This will also work for DA Twinax connections */ |
| 3922 | schedule_work(&adapter->multispeed_fiber_task); |
| 3923 | adapter->flags &= ~IXGBE_FLAG_IN_SFP_MOD_TASK; |
| 3924 | } |
| 3925 | |
| 3926 | /** |
Alexander Duyck | 6988867 | 2008-09-11 20:05:39 -0700 | [diff] [blame] | 3927 | * ixgbe_watchdog_task - worker thread to bring link up |
| 3928 | * @work: pointer to work_struct containing our data |
Jesse Brandeburg | cf8280e | 2008-09-11 19:55:32 -0700 | [diff] [blame] | 3929 | **/ |
| 3930 | static void ixgbe_watchdog_task(struct work_struct *work) |
| 3931 | { |
| 3932 | struct ixgbe_adapter *adapter = container_of(work, |
| 3933 | struct ixgbe_adapter, |
| 3934 | watchdog_task); |
| 3935 | struct net_device *netdev = adapter->netdev; |
| 3936 | struct ixgbe_hw *hw = &adapter->hw; |
| 3937 | u32 link_speed = adapter->link_speed; |
| 3938 | bool link_up = adapter->link_up; |
| 3939 | |
| 3940 | adapter->flags |= IXGBE_FLAG_IN_WATCHDOG_TASK; |
| 3941 | |
| 3942 | if (adapter->flags & IXGBE_FLAG_NEED_LINK_UPDATE) { |
| 3943 | hw->mac.ops.check_link(hw, &link_speed, &link_up, false); |
| 3944 | if (link_up || |
| 3945 | time_after(jiffies, (adapter->link_check_timeout + |
| 3946 | IXGBE_TRY_LINK_TIMEOUT))) { |
| 3947 | IXGBE_WRITE_REG(hw, IXGBE_EIMS, IXGBE_EIMC_LSC); |
| 3948 | adapter->flags &= ~IXGBE_FLAG_NEED_LINK_UPDATE; |
| 3949 | } |
| 3950 | adapter->link_up = link_up; |
| 3951 | adapter->link_speed = link_speed; |
| 3952 | } |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3953 | |
| 3954 | if (link_up) { |
| 3955 | if (!netif_carrier_ok(netdev)) { |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 3956 | bool flow_rx, flow_tx; |
| 3957 | |
| 3958 | if (hw->mac.type == ixgbe_mac_82599EB) { |
| 3959 | u32 mflcn = IXGBE_READ_REG(hw, IXGBE_MFLCN); |
| 3960 | u32 fccfg = IXGBE_READ_REG(hw, IXGBE_FCCFG); |
| 3961 | flow_rx = (mflcn & IXGBE_MFLCN_RFCE); |
| 3962 | flow_tx = (fccfg & IXGBE_FCCFG_TFCE_802_3X); |
| 3963 | } else { |
| 3964 | u32 frctl = IXGBE_READ_REG(hw, IXGBE_FCTRL); |
| 3965 | u32 rmcs = IXGBE_READ_REG(hw, IXGBE_RMCS); |
| 3966 | flow_rx = (frctl & IXGBE_FCTRL_RFCE); |
| 3967 | flow_tx = (rmcs & IXGBE_RMCS_TFCE_802_3X); |
| 3968 | } |
| 3969 | |
Jeff Kirsher | a46e534 | 2008-11-27 00:22:21 -0800 | [diff] [blame] | 3970 | printk(KERN_INFO "ixgbe: %s NIC Link is Up %s, " |
| 3971 | "Flow Control: %s\n", |
| 3972 | netdev->name, |
| 3973 | (link_speed == IXGBE_LINK_SPEED_10GB_FULL ? |
| 3974 | "10 Gbps" : |
| 3975 | (link_speed == IXGBE_LINK_SPEED_1GB_FULL ? |
| 3976 | "1 Gbps" : "unknown speed")), |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 3977 | ((flow_rx && flow_tx) ? "RX/TX" : |
| 3978 | (flow_rx ? "RX" : |
| 3979 | (flow_tx ? "TX" : "None")))); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3980 | |
| 3981 | netif_carrier_on(netdev); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3982 | } else { |
| 3983 | /* Force detection of hung controller */ |
| 3984 | adapter->detect_tx_hung = true; |
| 3985 | } |
| 3986 | } else { |
Jesse Brandeburg | cf8280e | 2008-09-11 19:55:32 -0700 | [diff] [blame] | 3987 | adapter->link_up = false; |
| 3988 | adapter->link_speed = 0; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3989 | if (netif_carrier_ok(netdev)) { |
Jeff Kirsher | a46e534 | 2008-11-27 00:22:21 -0800 | [diff] [blame] | 3990 | printk(KERN_INFO "ixgbe: %s NIC Link is Down\n", |
| 3991 | netdev->name); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3992 | netif_carrier_off(netdev); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3993 | } |
| 3994 | } |
| 3995 | |
| 3996 | ixgbe_update_stats(adapter); |
Jesse Brandeburg | cf8280e | 2008-09-11 19:55:32 -0700 | [diff] [blame] | 3997 | adapter->flags &= ~IXGBE_FLAG_IN_WATCHDOG_TASK; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 3998 | } |
| 3999 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4000 | static int ixgbe_tso(struct ixgbe_adapter *adapter, |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 4001 | struct ixgbe_ring *tx_ring, struct sk_buff *skb, |
| 4002 | u32 tx_flags, u8 *hdr_len) |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4003 | { |
| 4004 | struct ixgbe_adv_tx_context_desc *context_desc; |
| 4005 | unsigned int i; |
| 4006 | int err; |
| 4007 | struct ixgbe_tx_buffer *tx_buffer_info; |
Jesse Brandeburg | 9f8cdf4 | 2008-09-11 20:03:35 -0700 | [diff] [blame] | 4008 | u32 vlan_macip_lens = 0, type_tucmd_mlhl; |
| 4009 | u32 mss_l4len_idx, l4len; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4010 | |
| 4011 | if (skb_is_gso(skb)) { |
| 4012 | if (skb_header_cloned(skb)) { |
| 4013 | err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); |
| 4014 | if (err) |
| 4015 | return err; |
| 4016 | } |
| 4017 | l4len = tcp_hdrlen(skb); |
| 4018 | *hdr_len += l4len; |
| 4019 | |
Al Viro | 8327d00 | 2007-12-10 18:54:12 +0000 | [diff] [blame] | 4020 | if (skb->protocol == htons(ETH_P_IP)) { |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4021 | struct iphdr *iph = ip_hdr(skb); |
| 4022 | iph->tot_len = 0; |
| 4023 | iph->check = 0; |
| 4024 | tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 4025 | iph->daddr, 0, |
| 4026 | IPPROTO_TCP, |
| 4027 | 0); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4028 | adapter->hw_tso_ctxt++; |
| 4029 | } else if (skb_shinfo(skb)->gso_type == SKB_GSO_TCPV6) { |
| 4030 | ipv6_hdr(skb)->payload_len = 0; |
| 4031 | tcp_hdr(skb)->check = |
| 4032 | ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 4033 | &ipv6_hdr(skb)->daddr, |
| 4034 | 0, IPPROTO_TCP, 0); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4035 | adapter->hw_tso6_ctxt++; |
| 4036 | } |
| 4037 | |
| 4038 | i = tx_ring->next_to_use; |
| 4039 | |
| 4040 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; |
| 4041 | context_desc = IXGBE_TX_CTXTDESC_ADV(*tx_ring, i); |
| 4042 | |
| 4043 | /* VLAN MACLEN IPLEN */ |
| 4044 | if (tx_flags & IXGBE_TX_FLAGS_VLAN) |
| 4045 | vlan_macip_lens |= |
| 4046 | (tx_flags & IXGBE_TX_FLAGS_VLAN_MASK); |
| 4047 | vlan_macip_lens |= ((skb_network_offset(skb)) << |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 4048 | IXGBE_ADVTXD_MACLEN_SHIFT); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4049 | *hdr_len += skb_network_offset(skb); |
| 4050 | vlan_macip_lens |= |
| 4051 | (skb_transport_header(skb) - skb_network_header(skb)); |
| 4052 | *hdr_len += |
| 4053 | (skb_transport_header(skb) - skb_network_header(skb)); |
| 4054 | context_desc->vlan_macip_lens = cpu_to_le32(vlan_macip_lens); |
| 4055 | context_desc->seqnum_seed = 0; |
| 4056 | |
| 4057 | /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */ |
Jesse Brandeburg | 9f8cdf4 | 2008-09-11 20:03:35 -0700 | [diff] [blame] | 4058 | type_tucmd_mlhl = (IXGBE_TXD_CMD_DEXT | |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 4059 | IXGBE_ADVTXD_DTYP_CTXT); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4060 | |
Al Viro | 8327d00 | 2007-12-10 18:54:12 +0000 | [diff] [blame] | 4061 | if (skb->protocol == htons(ETH_P_IP)) |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4062 | type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_IPV4; |
| 4063 | type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_L4T_TCP; |
| 4064 | context_desc->type_tucmd_mlhl = cpu_to_le32(type_tucmd_mlhl); |
| 4065 | |
| 4066 | /* MSS L4LEN IDX */ |
Jesse Brandeburg | 9f8cdf4 | 2008-09-11 20:03:35 -0700 | [diff] [blame] | 4067 | mss_l4len_idx = |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4068 | (skb_shinfo(skb)->gso_size << IXGBE_ADVTXD_MSS_SHIFT); |
| 4069 | mss_l4len_idx |= (l4len << IXGBE_ADVTXD_L4LEN_SHIFT); |
PJ Waskiewicz | 4eeae6f | 2008-08-26 04:27:30 -0700 | [diff] [blame] | 4070 | /* use index 1 for TSO */ |
| 4071 | mss_l4len_idx |= (1 << IXGBE_ADVTXD_IDX_SHIFT); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4072 | context_desc->mss_l4len_idx = cpu_to_le32(mss_l4len_idx); |
| 4073 | |
| 4074 | tx_buffer_info->time_stamp = jiffies; |
| 4075 | tx_buffer_info->next_to_watch = i; |
| 4076 | |
| 4077 | i++; |
| 4078 | if (i == tx_ring->count) |
| 4079 | i = 0; |
| 4080 | tx_ring->next_to_use = i; |
| 4081 | |
| 4082 | return true; |
| 4083 | } |
| 4084 | return false; |
| 4085 | } |
| 4086 | |
| 4087 | static bool ixgbe_tx_csum(struct ixgbe_adapter *adapter, |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 4088 | struct ixgbe_ring *tx_ring, |
| 4089 | struct sk_buff *skb, u32 tx_flags) |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4090 | { |
| 4091 | struct ixgbe_adv_tx_context_desc *context_desc; |
| 4092 | unsigned int i; |
| 4093 | struct ixgbe_tx_buffer *tx_buffer_info; |
| 4094 | u32 vlan_macip_lens = 0, type_tucmd_mlhl = 0; |
| 4095 | |
| 4096 | if (skb->ip_summed == CHECKSUM_PARTIAL || |
| 4097 | (tx_flags & IXGBE_TX_FLAGS_VLAN)) { |
| 4098 | i = tx_ring->next_to_use; |
| 4099 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; |
| 4100 | context_desc = IXGBE_TX_CTXTDESC_ADV(*tx_ring, i); |
| 4101 | |
| 4102 | if (tx_flags & IXGBE_TX_FLAGS_VLAN) |
| 4103 | vlan_macip_lens |= |
| 4104 | (tx_flags & IXGBE_TX_FLAGS_VLAN_MASK); |
| 4105 | vlan_macip_lens |= (skb_network_offset(skb) << |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 4106 | IXGBE_ADVTXD_MACLEN_SHIFT); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4107 | if (skb->ip_summed == CHECKSUM_PARTIAL) |
| 4108 | vlan_macip_lens |= (skb_transport_header(skb) - |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 4109 | skb_network_header(skb)); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4110 | |
| 4111 | context_desc->vlan_macip_lens = cpu_to_le32(vlan_macip_lens); |
| 4112 | context_desc->seqnum_seed = 0; |
| 4113 | |
| 4114 | type_tucmd_mlhl |= (IXGBE_TXD_CMD_DEXT | |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 4115 | IXGBE_ADVTXD_DTYP_CTXT); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4116 | |
| 4117 | if (skb->ip_summed == CHECKSUM_PARTIAL) { |
Auke Kok | 41825d7 | 2008-02-12 15:20:33 -0800 | [diff] [blame] | 4118 | switch (skb->protocol) { |
Harvey Harrison | 09640e6 | 2009-02-01 00:45:17 -0800 | [diff] [blame] | 4119 | case cpu_to_be16(ETH_P_IP): |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4120 | type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_IPV4; |
Auke Kok | 41825d7 | 2008-02-12 15:20:33 -0800 | [diff] [blame] | 4121 | if (ip_hdr(skb)->protocol == IPPROTO_TCP) |
| 4122 | type_tucmd_mlhl |= |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 4123 | IXGBE_ADVTXD_TUCMD_L4T_TCP; |
Auke Kok | 41825d7 | 2008-02-12 15:20:33 -0800 | [diff] [blame] | 4124 | break; |
Harvey Harrison | 09640e6 | 2009-02-01 00:45:17 -0800 | [diff] [blame] | 4125 | case cpu_to_be16(ETH_P_IPV6): |
Auke Kok | 41825d7 | 2008-02-12 15:20:33 -0800 | [diff] [blame] | 4126 | /* XXX what about other V6 headers?? */ |
| 4127 | if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP) |
| 4128 | type_tucmd_mlhl |= |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 4129 | IXGBE_ADVTXD_TUCMD_L4T_TCP; |
Auke Kok | 41825d7 | 2008-02-12 15:20:33 -0800 | [diff] [blame] | 4130 | break; |
Auke Kok | 41825d7 | 2008-02-12 15:20:33 -0800 | [diff] [blame] | 4131 | default: |
| 4132 | if (unlikely(net_ratelimit())) { |
| 4133 | DPRINTK(PROBE, WARNING, |
| 4134 | "partial checksum but proto=%x!\n", |
| 4135 | skb->protocol); |
| 4136 | } |
| 4137 | break; |
| 4138 | } |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4139 | } |
| 4140 | |
| 4141 | context_desc->type_tucmd_mlhl = cpu_to_le32(type_tucmd_mlhl); |
PJ Waskiewicz | 4eeae6f | 2008-08-26 04:27:30 -0700 | [diff] [blame] | 4142 | /* use index zero for tx checksum offload */ |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4143 | context_desc->mss_l4len_idx = 0; |
| 4144 | |
| 4145 | tx_buffer_info->time_stamp = jiffies; |
| 4146 | tx_buffer_info->next_to_watch = i; |
Jesse Brandeburg | 9f8cdf4 | 2008-09-11 20:03:35 -0700 | [diff] [blame] | 4147 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4148 | adapter->hw_csum_tx_good++; |
| 4149 | i++; |
| 4150 | if (i == tx_ring->count) |
| 4151 | i = 0; |
| 4152 | tx_ring->next_to_use = i; |
| 4153 | |
| 4154 | return true; |
| 4155 | } |
Jesse Brandeburg | 9f8cdf4 | 2008-09-11 20:03:35 -0700 | [diff] [blame] | 4156 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4157 | return false; |
| 4158 | } |
| 4159 | |
| 4160 | static int ixgbe_tx_map(struct ixgbe_adapter *adapter, |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 4161 | struct ixgbe_ring *tx_ring, |
| 4162 | struct sk_buff *skb, unsigned int first) |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4163 | { |
| 4164 | struct ixgbe_tx_buffer *tx_buffer_info; |
Alexander Duyck | 44df32c | 2009-03-31 21:34:23 +0000 | [diff] [blame] | 4165 | unsigned int len = skb_headlen(skb); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4166 | unsigned int offset = 0, size, count = 0, i; |
| 4167 | unsigned int nr_frags = skb_shinfo(skb)->nr_frags; |
| 4168 | unsigned int f; |
Alexander Duyck | 44df32c | 2009-03-31 21:34:23 +0000 | [diff] [blame] | 4169 | dma_addr_t *map; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4170 | |
| 4171 | i = tx_ring->next_to_use; |
| 4172 | |
Alexander Duyck | 44df32c | 2009-03-31 21:34:23 +0000 | [diff] [blame] | 4173 | if (skb_dma_map(&adapter->pdev->dev, skb, DMA_TO_DEVICE)) { |
| 4174 | dev_err(&adapter->pdev->dev, "TX DMA map failed\n"); |
| 4175 | return 0; |
| 4176 | } |
| 4177 | |
| 4178 | map = skb_shinfo(skb)->dma_maps; |
| 4179 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4180 | while (len) { |
| 4181 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; |
| 4182 | size = min(len, (uint)IXGBE_MAX_DATA_PER_TXD); |
| 4183 | |
| 4184 | tx_buffer_info->length = size; |
Alexander Duyck | 44df32c | 2009-03-31 21:34:23 +0000 | [diff] [blame] | 4185 | tx_buffer_info->dma = map[0] + offset; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4186 | tx_buffer_info->time_stamp = jiffies; |
| 4187 | tx_buffer_info->next_to_watch = i; |
| 4188 | |
| 4189 | len -= size; |
| 4190 | offset += size; |
| 4191 | count++; |
Alexander Duyck | 44df32c | 2009-03-31 21:34:23 +0000 | [diff] [blame] | 4192 | |
| 4193 | if (len) { |
| 4194 | i++; |
| 4195 | if (i == tx_ring->count) |
| 4196 | i = 0; |
| 4197 | } |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4198 | } |
| 4199 | |
| 4200 | for (f = 0; f < nr_frags; f++) { |
| 4201 | struct skb_frag_struct *frag; |
| 4202 | |
| 4203 | frag = &skb_shinfo(skb)->frags[f]; |
| 4204 | len = frag->size; |
Alexander Duyck | 44df32c | 2009-03-31 21:34:23 +0000 | [diff] [blame] | 4205 | offset = 0; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4206 | |
| 4207 | while (len) { |
Alexander Duyck | 44df32c | 2009-03-31 21:34:23 +0000 | [diff] [blame] | 4208 | i++; |
| 4209 | if (i == tx_ring->count) |
| 4210 | i = 0; |
| 4211 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4212 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; |
| 4213 | size = min(len, (uint)IXGBE_MAX_DATA_PER_TXD); |
| 4214 | |
| 4215 | tx_buffer_info->length = size; |
Alexander Duyck | 44df32c | 2009-03-31 21:34:23 +0000 | [diff] [blame] | 4216 | tx_buffer_info->dma = map[f + 1] + offset; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4217 | tx_buffer_info->time_stamp = jiffies; |
| 4218 | tx_buffer_info->next_to_watch = i; |
| 4219 | |
| 4220 | len -= size; |
| 4221 | offset += size; |
| 4222 | count++; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4223 | } |
| 4224 | } |
Alexander Duyck | 44df32c | 2009-03-31 21:34:23 +0000 | [diff] [blame] | 4225 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4226 | tx_ring->tx_buffer_info[i].skb = skb; |
| 4227 | tx_ring->tx_buffer_info[first].next_to_watch = i; |
| 4228 | |
| 4229 | return count; |
| 4230 | } |
| 4231 | |
| 4232 | static void ixgbe_tx_queue(struct ixgbe_adapter *adapter, |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 4233 | struct ixgbe_ring *tx_ring, |
| 4234 | int tx_flags, int count, u32 paylen, u8 hdr_len) |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4235 | { |
| 4236 | union ixgbe_adv_tx_desc *tx_desc = NULL; |
| 4237 | struct ixgbe_tx_buffer *tx_buffer_info; |
| 4238 | u32 olinfo_status = 0, cmd_type_len = 0; |
| 4239 | unsigned int i; |
| 4240 | u32 txd_cmd = IXGBE_TXD_CMD_EOP | IXGBE_TXD_CMD_RS | IXGBE_TXD_CMD_IFCS; |
| 4241 | |
| 4242 | cmd_type_len |= IXGBE_ADVTXD_DTYP_DATA; |
| 4243 | |
| 4244 | cmd_type_len |= IXGBE_ADVTXD_DCMD_IFCS | IXGBE_ADVTXD_DCMD_DEXT; |
| 4245 | |
| 4246 | if (tx_flags & IXGBE_TX_FLAGS_VLAN) |
| 4247 | cmd_type_len |= IXGBE_ADVTXD_DCMD_VLE; |
| 4248 | |
| 4249 | if (tx_flags & IXGBE_TX_FLAGS_TSO) { |
| 4250 | cmd_type_len |= IXGBE_ADVTXD_DCMD_TSE; |
| 4251 | |
| 4252 | olinfo_status |= IXGBE_TXD_POPTS_TXSM << |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 4253 | IXGBE_ADVTXD_POPTS_SHIFT; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4254 | |
PJ Waskiewicz | 4eeae6f | 2008-08-26 04:27:30 -0700 | [diff] [blame] | 4255 | /* use index 1 context for tso */ |
| 4256 | olinfo_status |= (1 << IXGBE_ADVTXD_IDX_SHIFT); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4257 | if (tx_flags & IXGBE_TX_FLAGS_IPV4) |
| 4258 | olinfo_status |= IXGBE_TXD_POPTS_IXSM << |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 4259 | IXGBE_ADVTXD_POPTS_SHIFT; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4260 | |
| 4261 | } else if (tx_flags & IXGBE_TX_FLAGS_CSUM) |
| 4262 | olinfo_status |= IXGBE_TXD_POPTS_TXSM << |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 4263 | IXGBE_ADVTXD_POPTS_SHIFT; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4264 | |
| 4265 | olinfo_status |= ((paylen - hdr_len) << IXGBE_ADVTXD_PAYLEN_SHIFT); |
| 4266 | |
| 4267 | i = tx_ring->next_to_use; |
| 4268 | while (count--) { |
| 4269 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; |
| 4270 | tx_desc = IXGBE_TX_DESC_ADV(*tx_ring, i); |
| 4271 | tx_desc->read.buffer_addr = cpu_to_le64(tx_buffer_info->dma); |
| 4272 | tx_desc->read.cmd_type_len = |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 4273 | cpu_to_le32(cmd_type_len | tx_buffer_info->length); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4274 | tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4275 | i++; |
| 4276 | if (i == tx_ring->count) |
| 4277 | i = 0; |
| 4278 | } |
| 4279 | |
| 4280 | tx_desc->read.cmd_type_len |= cpu_to_le32(txd_cmd); |
| 4281 | |
| 4282 | /* |
| 4283 | * Force memory writes to complete before letting h/w |
| 4284 | * know there are new descriptors to fetch. (Only |
| 4285 | * applicable for weak-ordered memory model archs, |
| 4286 | * such as IA-64). |
| 4287 | */ |
| 4288 | wmb(); |
| 4289 | |
| 4290 | tx_ring->next_to_use = i; |
| 4291 | writel(i, adapter->hw.hw_addr + tx_ring->tail); |
| 4292 | } |
| 4293 | |
Ayyappan Veeraiyan | e092be6 | 2008-02-01 15:58:49 -0800 | [diff] [blame] | 4294 | static int __ixgbe_maybe_stop_tx(struct net_device *netdev, |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 4295 | struct ixgbe_ring *tx_ring, int size) |
Ayyappan Veeraiyan | e092be6 | 2008-02-01 15:58:49 -0800 | [diff] [blame] | 4296 | { |
| 4297 | struct ixgbe_adapter *adapter = netdev_priv(netdev); |
| 4298 | |
Ayyappan Veeraiyan | 30eba97 | 2008-03-03 15:03:52 -0800 | [diff] [blame] | 4299 | netif_stop_subqueue(netdev, tx_ring->queue_index); |
Ayyappan Veeraiyan | e092be6 | 2008-02-01 15:58:49 -0800 | [diff] [blame] | 4300 | /* Herbert's original patch had: |
| 4301 | * smp_mb__after_netif_stop_queue(); |
| 4302 | * but since that doesn't exist yet, just open code it. */ |
| 4303 | smp_mb(); |
| 4304 | |
| 4305 | /* We need to check again in a case another CPU has just |
| 4306 | * made room available. */ |
| 4307 | if (likely(IXGBE_DESC_UNUSED(tx_ring) < size)) |
| 4308 | return -EBUSY; |
| 4309 | |
| 4310 | /* A reprieve! - use start_queue because it doesn't call schedule */ |
Jesse Brandeburg | af72166 | 2008-09-11 19:54:23 -0700 | [diff] [blame] | 4311 | netif_start_subqueue(netdev, tx_ring->queue_index); |
Ayyappan Veeraiyan | e092be6 | 2008-02-01 15:58:49 -0800 | [diff] [blame] | 4312 | ++adapter->restart_queue; |
| 4313 | return 0; |
| 4314 | } |
| 4315 | |
| 4316 | static int ixgbe_maybe_stop_tx(struct net_device *netdev, |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 4317 | struct ixgbe_ring *tx_ring, int size) |
Ayyappan Veeraiyan | e092be6 | 2008-02-01 15:58:49 -0800 | [diff] [blame] | 4318 | { |
| 4319 | if (likely(IXGBE_DESC_UNUSED(tx_ring) >= size)) |
| 4320 | return 0; |
| 4321 | return __ixgbe_maybe_stop_tx(netdev, tx_ring, size); |
| 4322 | } |
| 4323 | |
Stephen Hemminger | 09a3b1f | 2009-03-21 13:40:01 -0700 | [diff] [blame] | 4324 | static u16 ixgbe_select_queue(struct net_device *dev, struct sk_buff *skb) |
| 4325 | { |
| 4326 | struct ixgbe_adapter *adapter = netdev_priv(dev); |
| 4327 | |
| 4328 | if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) |
| 4329 | return 0; /* All traffic should default to class 0 */ |
| 4330 | |
| 4331 | return skb_tx_hash(dev, skb); |
| 4332 | } |
| 4333 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4334 | static int ixgbe_xmit_frame(struct sk_buff *skb, struct net_device *netdev) |
| 4335 | { |
| 4336 | struct ixgbe_adapter *adapter = netdev_priv(netdev); |
| 4337 | struct ixgbe_ring *tx_ring; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4338 | unsigned int first; |
| 4339 | unsigned int tx_flags = 0; |
Ayyappan Veeraiyan | 30eba97 | 2008-03-03 15:03:52 -0800 | [diff] [blame] | 4340 | u8 hdr_len = 0; |
| 4341 | int r_idx = 0, tso; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4342 | int count = 0; |
| 4343 | unsigned int f; |
Jesse Brandeburg | 9f8cdf4 | 2008-09-11 20:03:35 -0700 | [diff] [blame] | 4344 | |
Ayyappan Veeraiyan | 30eba97 | 2008-03-03 15:03:52 -0800 | [diff] [blame] | 4345 | r_idx = (adapter->num_tx_queues - 1) & skb->queue_mapping; |
Ayyappan Veeraiyan | 30eba97 | 2008-03-03 15:03:52 -0800 | [diff] [blame] | 4346 | tx_ring = &adapter->tx_ring[r_idx]; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4347 | |
Jesse Brandeburg | 9f8cdf4 | 2008-09-11 20:03:35 -0700 | [diff] [blame] | 4348 | if (adapter->vlgrp && vlan_tx_tag_present(skb)) { |
| 4349 | tx_flags |= vlan_tx_tag_get(skb); |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 4350 | if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) { |
| 4351 | tx_flags &= ~IXGBE_TX_FLAGS_VLAN_PRIO_MASK; |
| 4352 | tx_flags |= (skb->queue_mapping << 13); |
| 4353 | } |
| 4354 | tx_flags <<= IXGBE_TX_FLAGS_VLAN_SHIFT; |
| 4355 | tx_flags |= IXGBE_TX_FLAGS_VLAN; |
| 4356 | } else if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) { |
| 4357 | tx_flags |= (skb->queue_mapping << 13); |
Jesse Brandeburg | 9f8cdf4 | 2008-09-11 20:03:35 -0700 | [diff] [blame] | 4358 | tx_flags <<= IXGBE_TX_FLAGS_VLAN_SHIFT; |
| 4359 | tx_flags |= IXGBE_TX_FLAGS_VLAN; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4360 | } |
Jesse Brandeburg | 9f8cdf4 | 2008-09-11 20:03:35 -0700 | [diff] [blame] | 4361 | /* three things can cause us to need a context descriptor */ |
| 4362 | if (skb_is_gso(skb) || |
| 4363 | (skb->ip_summed == CHECKSUM_PARTIAL) || |
| 4364 | (tx_flags & IXGBE_TX_FLAGS_VLAN)) |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4365 | count++; |
| 4366 | |
Jesse Brandeburg | 9f8cdf4 | 2008-09-11 20:03:35 -0700 | [diff] [blame] | 4367 | count += TXD_USE_COUNT(skb_headlen(skb)); |
| 4368 | for (f = 0; f < skb_shinfo(skb)->nr_frags; f++) |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4369 | count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size); |
| 4370 | |
Ayyappan Veeraiyan | e092be6 | 2008-02-01 15:58:49 -0800 | [diff] [blame] | 4371 | if (ixgbe_maybe_stop_tx(netdev, tx_ring, count)) { |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4372 | adapter->tx_busy++; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4373 | return NETDEV_TX_BUSY; |
| 4374 | } |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4375 | |
Al Viro | 8327d00 | 2007-12-10 18:54:12 +0000 | [diff] [blame] | 4376 | if (skb->protocol == htons(ETH_P_IP)) |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4377 | tx_flags |= IXGBE_TX_FLAGS_IPV4; |
| 4378 | first = tx_ring->next_to_use; |
| 4379 | tso = ixgbe_tso(adapter, tx_ring, skb, tx_flags, &hdr_len); |
| 4380 | if (tso < 0) { |
| 4381 | dev_kfree_skb_any(skb); |
| 4382 | return NETDEV_TX_OK; |
| 4383 | } |
| 4384 | |
| 4385 | if (tso) |
| 4386 | tx_flags |= IXGBE_TX_FLAGS_TSO; |
| 4387 | else if (ixgbe_tx_csum(adapter, tx_ring, skb, tx_flags) && |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 4388 | (skb->ip_summed == CHECKSUM_PARTIAL)) |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4389 | tx_flags |= IXGBE_TX_FLAGS_CSUM; |
| 4390 | |
Alexander Duyck | 44df32c | 2009-03-31 21:34:23 +0000 | [diff] [blame] | 4391 | count = ixgbe_tx_map(adapter, tx_ring, skb, first); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4392 | |
Alexander Duyck | 44df32c | 2009-03-31 21:34:23 +0000 | [diff] [blame] | 4393 | if (count) { |
| 4394 | ixgbe_tx_queue(adapter, tx_ring, tx_flags, count, skb->len, |
| 4395 | hdr_len); |
| 4396 | netdev->trans_start = jiffies; |
| 4397 | ixgbe_maybe_stop_tx(netdev, tx_ring, DESC_NEEDED); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4398 | |
Alexander Duyck | 44df32c | 2009-03-31 21:34:23 +0000 | [diff] [blame] | 4399 | } else { |
| 4400 | dev_kfree_skb_any(skb); |
| 4401 | tx_ring->tx_buffer_info[first].time_stamp = 0; |
| 4402 | tx_ring->next_to_use = first; |
| 4403 | } |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4404 | |
| 4405 | return NETDEV_TX_OK; |
| 4406 | } |
| 4407 | |
| 4408 | /** |
| 4409 | * ixgbe_get_stats - Get System Network Statistics |
| 4410 | * @netdev: network interface device structure |
| 4411 | * |
| 4412 | * Returns the address of the device statistics structure. |
| 4413 | * The statistics are actually updated from the timer callback. |
| 4414 | **/ |
| 4415 | static struct net_device_stats *ixgbe_get_stats(struct net_device *netdev) |
| 4416 | { |
| 4417 | struct ixgbe_adapter *adapter = netdev_priv(netdev); |
| 4418 | |
| 4419 | /* only return the current stats */ |
| 4420 | return &adapter->net_stats; |
| 4421 | } |
| 4422 | |
| 4423 | /** |
| 4424 | * ixgbe_set_mac - Change the Ethernet Address of the NIC |
| 4425 | * @netdev: network interface device structure |
| 4426 | * @p: pointer to an address structure |
| 4427 | * |
| 4428 | * Returns 0 on success, negative on failure |
| 4429 | **/ |
| 4430 | static int ixgbe_set_mac(struct net_device *netdev, void *p) |
| 4431 | { |
| 4432 | struct ixgbe_adapter *adapter = netdev_priv(netdev); |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 4433 | struct ixgbe_hw *hw = &adapter->hw; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4434 | struct sockaddr *addr = p; |
| 4435 | |
| 4436 | if (!is_valid_ether_addr(addr->sa_data)) |
| 4437 | return -EADDRNOTAVAIL; |
| 4438 | |
| 4439 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 4440 | memcpy(hw->mac.addr, addr->sa_data, netdev->addr_len); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4441 | |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 4442 | hw->mac.ops.set_rar(hw, 0, hw->mac.addr, 0, IXGBE_RAH_AV); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4443 | |
| 4444 | return 0; |
| 4445 | } |
| 4446 | |
| 4447 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 4448 | /* |
| 4449 | * Polling 'interrupt' - used by things like netconsole to send skbs |
| 4450 | * without having to re-enable interrupts. It's not called while |
| 4451 | * the interrupt routine is executing. |
| 4452 | */ |
| 4453 | static void ixgbe_netpoll(struct net_device *netdev) |
| 4454 | { |
| 4455 | struct ixgbe_adapter *adapter = netdev_priv(netdev); |
| 4456 | |
| 4457 | disable_irq(adapter->pdev->irq); |
| 4458 | adapter->flags |= IXGBE_FLAG_IN_NETPOLL; |
| 4459 | ixgbe_intr(adapter->pdev->irq, netdev); |
| 4460 | adapter->flags &= ~IXGBE_FLAG_IN_NETPOLL; |
| 4461 | enable_irq(adapter->pdev->irq); |
| 4462 | } |
| 4463 | #endif |
| 4464 | |
Stephen Hemminger | 0edc352 | 2008-11-19 22:24:29 -0800 | [diff] [blame] | 4465 | static const struct net_device_ops ixgbe_netdev_ops = { |
| 4466 | .ndo_open = ixgbe_open, |
| 4467 | .ndo_stop = ixgbe_close, |
Stephen Hemminger | 0082982 | 2008-11-20 20:14:53 -0800 | [diff] [blame] | 4468 | .ndo_start_xmit = ixgbe_xmit_frame, |
Stephen Hemminger | 09a3b1f | 2009-03-21 13:40:01 -0700 | [diff] [blame] | 4469 | .ndo_select_queue = ixgbe_select_queue, |
Stephen Hemminger | 0edc352 | 2008-11-19 22:24:29 -0800 | [diff] [blame] | 4470 | .ndo_get_stats = ixgbe_get_stats, |
Chris Leech | e90d400 | 2009-03-10 16:00:24 +0000 | [diff] [blame] | 4471 | .ndo_set_rx_mode = ixgbe_set_rx_mode, |
Stephen Hemminger | 0edc352 | 2008-11-19 22:24:29 -0800 | [diff] [blame] | 4472 | .ndo_set_multicast_list = ixgbe_set_rx_mode, |
| 4473 | .ndo_validate_addr = eth_validate_addr, |
| 4474 | .ndo_set_mac_address = ixgbe_set_mac, |
| 4475 | .ndo_change_mtu = ixgbe_change_mtu, |
| 4476 | .ndo_tx_timeout = ixgbe_tx_timeout, |
| 4477 | .ndo_vlan_rx_register = ixgbe_vlan_rx_register, |
| 4478 | .ndo_vlan_rx_add_vid = ixgbe_vlan_rx_add_vid, |
| 4479 | .ndo_vlan_rx_kill_vid = ixgbe_vlan_rx_kill_vid, |
| 4480 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 4481 | .ndo_poll_controller = ixgbe_netpoll, |
| 4482 | #endif |
| 4483 | }; |
| 4484 | |
Jesse Brandeburg | c44ade9 | 2008-09-11 19:59:59 -0700 | [diff] [blame] | 4485 | /** |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4486 | * ixgbe_probe - Device Initialization Routine |
| 4487 | * @pdev: PCI device information struct |
| 4488 | * @ent: entry in ixgbe_pci_tbl |
| 4489 | * |
| 4490 | * Returns 0 on success, negative on failure |
| 4491 | * |
| 4492 | * ixgbe_probe initializes an adapter identified by a pci_dev structure. |
| 4493 | * The OS initialization, configuring of the adapter private structure, |
| 4494 | * and a hardware reset occur. |
| 4495 | **/ |
| 4496 | static int __devinit ixgbe_probe(struct pci_dev *pdev, |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 4497 | const struct pci_device_id *ent) |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4498 | { |
| 4499 | struct net_device *netdev; |
| 4500 | struct ixgbe_adapter *adapter = NULL; |
| 4501 | struct ixgbe_hw *hw; |
| 4502 | const struct ixgbe_info *ii = ixgbe_info_tbl[ent->driver_data]; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4503 | static int cards_found; |
| 4504 | int i, err, pci_using_dac; |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 4505 | u16 pm_value = 0; |
Jesse Brandeburg | c44ade9 | 2008-09-11 19:59:59 -0700 | [diff] [blame] | 4506 | u32 part_num, eec; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4507 | |
| 4508 | err = pci_enable_device(pdev); |
| 4509 | if (err) |
| 4510 | return err; |
| 4511 | |
Yang Hongyang | 6a35528 | 2009-04-06 19:01:13 -0700 | [diff] [blame] | 4512 | if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) && |
| 4513 | !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64))) { |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4514 | pci_using_dac = 1; |
| 4515 | } else { |
Yang Hongyang | 284901a | 2009-04-06 19:01:15 -0700 | [diff] [blame] | 4516 | err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4517 | if (err) { |
Yang Hongyang | 284901a | 2009-04-06 19:01:15 -0700 | [diff] [blame] | 4518 | err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4519 | if (err) { |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 4520 | dev_err(&pdev->dev, "No usable DMA " |
| 4521 | "configuration, aborting\n"); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4522 | goto err_dma; |
| 4523 | } |
| 4524 | } |
| 4525 | pci_using_dac = 0; |
| 4526 | } |
| 4527 | |
| 4528 | err = pci_request_regions(pdev, ixgbe_driver_name); |
| 4529 | if (err) { |
| 4530 | dev_err(&pdev->dev, "pci_request_regions failed 0x%x\n", err); |
| 4531 | goto err_pci_reg; |
| 4532 | } |
| 4533 | |
Peter P Waskiewicz Jr | 6fabd71 | 2008-12-10 01:13:08 -0800 | [diff] [blame] | 4534 | err = pci_enable_pcie_error_reporting(pdev); |
| 4535 | if (err) { |
| 4536 | dev_err(&pdev->dev, "pci_enable_pcie_error_reporting failed " |
| 4537 | "0x%x\n", err); |
| 4538 | /* non-fatal, continue */ |
| 4539 | } |
| 4540 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4541 | pci_set_master(pdev); |
Wendy Xiong | fb3b27b | 2008-04-23 11:09:24 -0700 | [diff] [blame] | 4542 | pci_save_state(pdev); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4543 | |
Ayyappan Veeraiyan | 30eba97 | 2008-03-03 15:03:52 -0800 | [diff] [blame] | 4544 | netdev = alloc_etherdev_mq(sizeof(struct ixgbe_adapter), MAX_TX_QUEUES); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4545 | if (!netdev) { |
| 4546 | err = -ENOMEM; |
| 4547 | goto err_alloc_etherdev; |
| 4548 | } |
| 4549 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4550 | SET_NETDEV_DEV(netdev, &pdev->dev); |
| 4551 | |
| 4552 | pci_set_drvdata(pdev, netdev); |
| 4553 | adapter = netdev_priv(netdev); |
| 4554 | |
| 4555 | adapter->netdev = netdev; |
| 4556 | adapter->pdev = pdev; |
| 4557 | hw = &adapter->hw; |
| 4558 | hw->back = adapter; |
| 4559 | adapter->msg_enable = (1 << DEFAULT_DEBUG_LEVEL_SHIFT) - 1; |
| 4560 | |
Jeff Kirsher | 0585798 | 2008-09-11 19:57:00 -0700 | [diff] [blame] | 4561 | hw->hw_addr = ioremap(pci_resource_start(pdev, 0), |
| 4562 | pci_resource_len(pdev, 0)); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4563 | if (!hw->hw_addr) { |
| 4564 | err = -EIO; |
| 4565 | goto err_ioremap; |
| 4566 | } |
| 4567 | |
| 4568 | for (i = 1; i <= 5; i++) { |
| 4569 | if (pci_resource_len(pdev, i) == 0) |
| 4570 | continue; |
| 4571 | } |
| 4572 | |
Stephen Hemminger | 0edc352 | 2008-11-19 22:24:29 -0800 | [diff] [blame] | 4573 | netdev->netdev_ops = &ixgbe_netdev_ops; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4574 | ixgbe_set_ethtool_ops(netdev); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4575 | netdev->watchdog_timeo = 5 * HZ; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4576 | strcpy(netdev->name, pci_name(pdev)); |
| 4577 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4578 | adapter->bd_number = cards_found; |
| 4579 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4580 | /* Setup hw api */ |
| 4581 | memcpy(&hw->mac.ops, ii->mac_ops, sizeof(hw->mac.ops)); |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 4582 | hw->mac.type = ii->mac; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4583 | |
Jesse Brandeburg | c44ade9 | 2008-09-11 19:59:59 -0700 | [diff] [blame] | 4584 | /* EEPROM */ |
| 4585 | memcpy(&hw->eeprom.ops, ii->eeprom_ops, sizeof(hw->eeprom.ops)); |
| 4586 | eec = IXGBE_READ_REG(hw, IXGBE_EEC); |
| 4587 | /* If EEPROM is valid (bit 8 = 1), use default otherwise use bit bang */ |
| 4588 | if (!(eec & (1 << 8))) |
| 4589 | hw->eeprom.ops.read = &ixgbe_read_eeprom_bit_bang_generic; |
| 4590 | |
| 4591 | /* PHY */ |
| 4592 | memcpy(&hw->phy.ops, ii->phy_ops, sizeof(hw->phy.ops)); |
Donald Skidmore | c4900be | 2008-11-20 21:11:42 -0800 | [diff] [blame] | 4593 | hw->phy.sfp_type = ixgbe_sfp_type_unknown; |
| 4594 | |
| 4595 | /* set up this timer and work struct before calling get_invariants |
| 4596 | * which might start the timer |
| 4597 | */ |
| 4598 | init_timer(&adapter->sfp_timer); |
| 4599 | adapter->sfp_timer.function = &ixgbe_sfp_timer; |
| 4600 | adapter->sfp_timer.data = (unsigned long) adapter; |
| 4601 | |
| 4602 | INIT_WORK(&adapter->sfp_task, ixgbe_sfp_task); |
Jesse Brandeburg | c44ade9 | 2008-09-11 19:59:59 -0700 | [diff] [blame] | 4603 | |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 4604 | /* multispeed fiber has its own tasklet, called from GPI SDP1 context */ |
| 4605 | INIT_WORK(&adapter->multispeed_fiber_task, ixgbe_multispeed_fiber_task); |
| 4606 | |
| 4607 | /* a new SFP+ module arrival, called from GPI SDP2 context */ |
| 4608 | INIT_WORK(&adapter->sfp_config_module_task, |
| 4609 | ixgbe_sfp_config_module_task); |
| 4610 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4611 | err = ii->get_invariants(hw); |
Donald Skidmore | c4900be | 2008-11-20 21:11:42 -0800 | [diff] [blame] | 4612 | if (err == IXGBE_ERR_SFP_NOT_PRESENT) { |
| 4613 | /* start a kernel thread to watch for a module to arrive */ |
| 4614 | set_bit(__IXGBE_SFP_MODULE_NOT_FOUND, &adapter->state); |
| 4615 | mod_timer(&adapter->sfp_timer, |
| 4616 | round_jiffies(jiffies + (2 * HZ))); |
| 4617 | err = 0; |
| 4618 | } else if (err == IXGBE_ERR_SFP_NOT_SUPPORTED) { |
| 4619 | DPRINTK(PROBE, ERR, "failed to load because an " |
| 4620 | "unsupported SFP+ module type was detected.\n"); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4621 | goto err_hw_init; |
Donald Skidmore | c4900be | 2008-11-20 21:11:42 -0800 | [diff] [blame] | 4622 | } else if (err) { |
| 4623 | goto err_hw_init; |
| 4624 | } |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4625 | |
| 4626 | /* setup the private structure */ |
| 4627 | err = ixgbe_sw_init(adapter); |
| 4628 | if (err) |
| 4629 | goto err_sw_init; |
| 4630 | |
Jesse Brandeburg | c44ade9 | 2008-09-11 19:59:59 -0700 | [diff] [blame] | 4631 | /* reset_hw fills in the perm_addr as well */ |
| 4632 | err = hw->mac.ops.reset_hw(hw); |
PJ Waskiewicz | 04f165e | 2009-04-09 22:27:57 +0000 | [diff] [blame] | 4633 | if (err == IXGBE_ERR_SFP_NOT_SUPPORTED) { |
| 4634 | dev_err(&adapter->pdev->dev, "failed to load because an " |
| 4635 | "unsupported SFP+ module type was detected.\n"); |
| 4636 | goto err_sw_init; |
| 4637 | } else if (err) { |
Jesse Brandeburg | c44ade9 | 2008-09-11 19:59:59 -0700 | [diff] [blame] | 4638 | dev_err(&adapter->pdev->dev, "HW Init failed: %d\n", err); |
| 4639 | goto err_sw_init; |
| 4640 | } |
| 4641 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4642 | netdev->features = NETIF_F_SG | |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 4643 | NETIF_F_IP_CSUM | |
| 4644 | NETIF_F_HW_VLAN_TX | |
| 4645 | NETIF_F_HW_VLAN_RX | |
| 4646 | NETIF_F_HW_VLAN_FILTER; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4647 | |
Jesse Brandeburg | e9990a9 | 2008-08-26 04:27:24 -0700 | [diff] [blame] | 4648 | netdev->features |= NETIF_F_IPV6_CSUM; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4649 | netdev->features |= NETIF_F_TSO; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4650 | netdev->features |= NETIF_F_TSO6; |
Herbert Xu | 78b6f4c | 2009-01-18 21:49:45 -0800 | [diff] [blame] | 4651 | netdev->features |= NETIF_F_GRO; |
Jeff Kirsher | ad31c40 | 2008-06-05 04:05:30 -0700 | [diff] [blame] | 4652 | |
| 4653 | netdev->vlan_features |= NETIF_F_TSO; |
| 4654 | netdev->vlan_features |= NETIF_F_TSO6; |
Jesse Brandeburg | 22f32b7a5 | 2008-08-26 04:27:18 -0700 | [diff] [blame] | 4655 | netdev->vlan_features |= NETIF_F_IP_CSUM; |
Jeff Kirsher | ad31c40 | 2008-06-05 04:05:30 -0700 | [diff] [blame] | 4656 | netdev->vlan_features |= NETIF_F_SG; |
| 4657 | |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 4658 | if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) |
| 4659 | adapter->flags &= ~IXGBE_FLAG_RSS_ENABLED; |
| 4660 | |
Jeff Kirsher | 7a6b6f5 | 2008-11-25 01:02:08 -0800 | [diff] [blame] | 4661 | #ifdef CONFIG_IXGBE_DCB |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 4662 | netdev->dcbnl_ops = &dcbnl_ops; |
| 4663 | #endif |
| 4664 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4665 | if (pci_using_dac) |
| 4666 | netdev->features |= NETIF_F_HIGHDMA; |
| 4667 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4668 | /* make sure the EEPROM is good */ |
Jesse Brandeburg | c44ade9 | 2008-09-11 19:59:59 -0700 | [diff] [blame] | 4669 | if (hw->eeprom.ops.validate_checksum(hw, NULL) < 0) { |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4670 | dev_err(&pdev->dev, "The EEPROM Checksum Is Not Valid\n"); |
| 4671 | err = -EIO; |
| 4672 | goto err_eeprom; |
| 4673 | } |
| 4674 | |
| 4675 | memcpy(netdev->dev_addr, hw->mac.perm_addr, netdev->addr_len); |
| 4676 | memcpy(netdev->perm_addr, hw->mac.perm_addr, netdev->addr_len); |
| 4677 | |
Jesse Brandeburg | c44ade9 | 2008-09-11 19:59:59 -0700 | [diff] [blame] | 4678 | if (ixgbe_validate_mac_addr(netdev->perm_addr)) { |
| 4679 | dev_err(&pdev->dev, "invalid MAC address\n"); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4680 | err = -EIO; |
| 4681 | goto err_eeprom; |
| 4682 | } |
| 4683 | |
| 4684 | init_timer(&adapter->watchdog_timer); |
| 4685 | adapter->watchdog_timer.function = &ixgbe_watchdog; |
| 4686 | adapter->watchdog_timer.data = (unsigned long)adapter; |
| 4687 | |
| 4688 | INIT_WORK(&adapter->reset_task, ixgbe_reset_task); |
Jesse Brandeburg | cf8280e | 2008-09-11 19:55:32 -0700 | [diff] [blame] | 4689 | INIT_WORK(&adapter->watchdog_task, ixgbe_watchdog_task); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4690 | |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 4691 | err = ixgbe_init_interrupt_scheme(adapter); |
| 4692 | if (err) |
| 4693 | goto err_sw_init; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4694 | |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 4695 | switch (pdev->device) { |
| 4696 | case IXGBE_DEV_ID_82599_KX4: |
| 4697 | #define IXGBE_PCIE_PMCSR 0x44 |
| 4698 | adapter->wol = IXGBE_WUFC_MAG; |
| 4699 | pci_read_config_word(pdev, IXGBE_PCIE_PMCSR, &pm_value); |
| 4700 | pci_write_config_word(pdev, IXGBE_PCIE_PMCSR, |
| 4701 | (pm_value | (1 << 8))); |
| 4702 | break; |
| 4703 | default: |
| 4704 | adapter->wol = 0; |
| 4705 | break; |
| 4706 | } |
| 4707 | device_init_wakeup(&adapter->pdev->dev, true); |
| 4708 | device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol); |
| 4709 | |
PJ Waskiewicz | 04f165e | 2009-04-09 22:27:57 +0000 | [diff] [blame] | 4710 | /* pick up the PCI bus settings for reporting later */ |
| 4711 | hw->mac.ops.get_bus_info(hw); |
| 4712 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4713 | /* print bus type/speed/width info */ |
Johannes Berg | 7c510e4 | 2008-10-27 17:47:26 -0700 | [diff] [blame] | 4714 | dev_info(&pdev->dev, "(PCI Express:%s:%s) %pM\n", |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 4715 | ((hw->bus.speed == ixgbe_bus_speed_5000) ? "5.0Gb/s": |
| 4716 | (hw->bus.speed == ixgbe_bus_speed_2500) ? "2.5Gb/s":"Unknown"), |
| 4717 | ((hw->bus.width == ixgbe_bus_width_pcie_x8) ? "Width x8" : |
| 4718 | (hw->bus.width == ixgbe_bus_width_pcie_x4) ? "Width x4" : |
| 4719 | (hw->bus.width == ixgbe_bus_width_pcie_x1) ? "Width x1" : |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 4720 | "Unknown"), |
Johannes Berg | 7c510e4 | 2008-10-27 17:47:26 -0700 | [diff] [blame] | 4721 | netdev->dev_addr); |
Jesse Brandeburg | c44ade9 | 2008-09-11 19:59:59 -0700 | [diff] [blame] | 4722 | ixgbe_read_pba_num_generic(hw, &part_num); |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 4723 | if (ixgbe_is_sfp(hw) && hw->phy.sfp_type != ixgbe_sfp_type_not_present) |
| 4724 | dev_info(&pdev->dev, "MAC: %d, PHY: %d, SFP+: %d, PBA No: %06x-%03x\n", |
| 4725 | hw->mac.type, hw->phy.type, hw->phy.sfp_type, |
| 4726 | (part_num >> 8), (part_num & 0xff)); |
| 4727 | else |
| 4728 | dev_info(&pdev->dev, "MAC: %d, PHY: %d, PBA No: %06x-%03x\n", |
| 4729 | hw->mac.type, hw->phy.type, |
| 4730 | (part_num >> 8), (part_num & 0xff)); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4731 | |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 4732 | if (hw->bus.width <= ixgbe_bus_width_pcie_x4) { |
Auke Kok | 0c254d8 | 2008-02-11 09:25:56 -0800 | [diff] [blame] | 4733 | dev_warn(&pdev->dev, "PCI-Express bandwidth available for " |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 4734 | "this card is not sufficient for optimal " |
| 4735 | "performance.\n"); |
Auke Kok | 0c254d8 | 2008-02-11 09:25:56 -0800 | [diff] [blame] | 4736 | dev_warn(&pdev->dev, "For optimal performance a x8 " |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 4737 | "PCI-Express slot is required.\n"); |
Auke Kok | 0c254d8 | 2008-02-11 09:25:56 -0800 | [diff] [blame] | 4738 | } |
| 4739 | |
Peter P Waskiewicz Jr | 34b0368 | 2009-02-05 23:54:42 -0800 | [diff] [blame] | 4740 | /* save off EEPROM version number */ |
| 4741 | hw->eeprom.ops.read(hw, 0x29, &adapter->eeprom_version); |
| 4742 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4743 | /* reset the hardware with the new settings */ |
Jesse Brandeburg | c44ade9 | 2008-09-11 19:59:59 -0700 | [diff] [blame] | 4744 | hw->mac.ops.start_hw(hw); |
| 4745 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4746 | netif_carrier_off(netdev); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4747 | |
| 4748 | strcpy(netdev->name, "eth%d"); |
| 4749 | err = register_netdev(netdev); |
| 4750 | if (err) |
| 4751 | goto err_register; |
| 4752 | |
Jeff Garzik | 5dd2d33 | 2008-10-16 05:09:31 -0400 | [diff] [blame] | 4753 | #ifdef CONFIG_IXGBE_DCA |
Denis V. Lunev | 652f093 | 2008-03-27 14:39:17 +0300 | [diff] [blame] | 4754 | if (dca_add_requester(&pdev->dev) == 0) { |
Jeb Cramer | bd0362d | 2008-03-03 15:04:02 -0800 | [diff] [blame] | 4755 | adapter->flags |= IXGBE_FLAG_DCA_ENABLED; |
| 4756 | /* always use CB2 mode, difference is masked |
| 4757 | * in the CB driver */ |
| 4758 | IXGBE_WRITE_REG(hw, IXGBE_DCA_CTRL, 2); |
| 4759 | ixgbe_setup_dca(adapter); |
| 4760 | } |
| 4761 | #endif |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4762 | |
| 4763 | dev_info(&pdev->dev, "Intel(R) 10 Gigabit Network Connection\n"); |
| 4764 | cards_found++; |
| 4765 | return 0; |
| 4766 | |
| 4767 | err_register: |
Ayyappan Veeraiyan | 5eba369 | 2008-02-01 15:59:04 -0800 | [diff] [blame] | 4768 | ixgbe_release_hw_control(adapter); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4769 | err_hw_init: |
| 4770 | err_sw_init: |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 4771 | ixgbe_reset_interrupt_capability(adapter); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4772 | err_eeprom: |
Donald Skidmore | c4900be | 2008-11-20 21:11:42 -0800 | [diff] [blame] | 4773 | clear_bit(__IXGBE_SFP_MODULE_NOT_FOUND, &adapter->state); |
| 4774 | del_timer_sync(&adapter->sfp_timer); |
| 4775 | cancel_work_sync(&adapter->sfp_task); |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 4776 | cancel_work_sync(&adapter->multispeed_fiber_task); |
| 4777 | cancel_work_sync(&adapter->sfp_config_module_task); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4778 | iounmap(hw->hw_addr); |
| 4779 | err_ioremap: |
| 4780 | free_netdev(netdev); |
| 4781 | err_alloc_etherdev: |
| 4782 | pci_release_regions(pdev); |
| 4783 | err_pci_reg: |
| 4784 | err_dma: |
| 4785 | pci_disable_device(pdev); |
| 4786 | return err; |
| 4787 | } |
| 4788 | |
| 4789 | /** |
| 4790 | * ixgbe_remove - Device Removal Routine |
| 4791 | * @pdev: PCI device information struct |
| 4792 | * |
| 4793 | * ixgbe_remove is called by the PCI subsystem to alert the driver |
| 4794 | * that it should release a PCI device. The could be caused by a |
| 4795 | * Hot-Plug event, or because the driver is going to be removed from |
| 4796 | * memory. |
| 4797 | **/ |
| 4798 | static void __devexit ixgbe_remove(struct pci_dev *pdev) |
| 4799 | { |
| 4800 | struct net_device *netdev = pci_get_drvdata(pdev); |
| 4801 | struct ixgbe_adapter *adapter = netdev_priv(netdev); |
Peter P Waskiewicz Jr | 6fabd71 | 2008-12-10 01:13:08 -0800 | [diff] [blame] | 4802 | int err; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4803 | |
| 4804 | set_bit(__IXGBE_DOWN, &adapter->state); |
Donald Skidmore | c4900be | 2008-11-20 21:11:42 -0800 | [diff] [blame] | 4805 | /* clear the module not found bit to make sure the worker won't |
| 4806 | * reschedule |
| 4807 | */ |
| 4808 | clear_bit(__IXGBE_SFP_MODULE_NOT_FOUND, &adapter->state); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4809 | del_timer_sync(&adapter->watchdog_timer); |
| 4810 | |
Donald Skidmore | c4900be | 2008-11-20 21:11:42 -0800 | [diff] [blame] | 4811 | del_timer_sync(&adapter->sfp_timer); |
| 4812 | cancel_work_sync(&adapter->watchdog_task); |
| 4813 | cancel_work_sync(&adapter->sfp_task); |
PJ Waskiewicz | e8e2635 | 2009-02-27 15:45:05 +0000 | [diff] [blame] | 4814 | cancel_work_sync(&adapter->multispeed_fiber_task); |
| 4815 | cancel_work_sync(&adapter->sfp_config_module_task); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4816 | flush_scheduled_work(); |
| 4817 | |
Jeff Garzik | 5dd2d33 | 2008-10-16 05:09:31 -0400 | [diff] [blame] | 4818 | #ifdef CONFIG_IXGBE_DCA |
Jeb Cramer | bd0362d | 2008-03-03 15:04:02 -0800 | [diff] [blame] | 4819 | if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) { |
| 4820 | adapter->flags &= ~IXGBE_FLAG_DCA_ENABLED; |
| 4821 | dca_remove_requester(&pdev->dev); |
| 4822 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 1); |
| 4823 | } |
| 4824 | |
| 4825 | #endif |
Donald Skidmore | c4900be | 2008-11-20 21:11:42 -0800 | [diff] [blame] | 4826 | if (netdev->reg_state == NETREG_REGISTERED) |
| 4827 | unregister_netdev(netdev); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4828 | |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 4829 | ixgbe_reset_interrupt_capability(adapter); |
Ayyappan Veeraiyan | 5eba369 | 2008-02-01 15:59:04 -0800 | [diff] [blame] | 4830 | |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 4831 | ixgbe_release_hw_control(adapter); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4832 | |
| 4833 | iounmap(adapter->hw.hw_addr); |
| 4834 | pci_release_regions(pdev); |
| 4835 | |
Ayyappan Veeraiyan | 021230d | 2008-03-03 15:03:45 -0800 | [diff] [blame] | 4836 | DPRINTK(PROBE, INFO, "complete\n"); |
| 4837 | kfree(adapter->tx_ring); |
| 4838 | kfree(adapter->rx_ring); |
| 4839 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4840 | free_netdev(netdev); |
| 4841 | |
Peter P Waskiewicz Jr | 6fabd71 | 2008-12-10 01:13:08 -0800 | [diff] [blame] | 4842 | err = pci_disable_pcie_error_reporting(pdev); |
| 4843 | if (err) |
| 4844 | dev_err(&pdev->dev, |
| 4845 | "pci_disable_pcie_error_reporting failed 0x%x\n", err); |
| 4846 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4847 | pci_disable_device(pdev); |
| 4848 | } |
| 4849 | |
| 4850 | /** |
| 4851 | * ixgbe_io_error_detected - called when PCI error is detected |
| 4852 | * @pdev: Pointer to PCI device |
| 4853 | * @state: The current pci connection state |
| 4854 | * |
| 4855 | * This function is called after a PCI bus error affecting |
| 4856 | * this device has been detected. |
| 4857 | */ |
| 4858 | static pci_ers_result_t ixgbe_io_error_detected(struct pci_dev *pdev, |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 4859 | pci_channel_state_t state) |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4860 | { |
| 4861 | struct net_device *netdev = pci_get_drvdata(pdev); |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 4862 | struct ixgbe_adapter *adapter = netdev_priv(netdev); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4863 | |
| 4864 | netif_device_detach(netdev); |
| 4865 | |
| 4866 | if (netif_running(netdev)) |
| 4867 | ixgbe_down(adapter); |
| 4868 | pci_disable_device(pdev); |
| 4869 | |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 4870 | /* Request a slot reset. */ |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4871 | return PCI_ERS_RESULT_NEED_RESET; |
| 4872 | } |
| 4873 | |
| 4874 | /** |
| 4875 | * ixgbe_io_slot_reset - called after the pci bus has been reset. |
| 4876 | * @pdev: Pointer to PCI device |
| 4877 | * |
| 4878 | * Restart the card from scratch, as if from a cold-boot. |
| 4879 | */ |
| 4880 | static pci_ers_result_t ixgbe_io_slot_reset(struct pci_dev *pdev) |
| 4881 | { |
| 4882 | struct net_device *netdev = pci_get_drvdata(pdev); |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 4883 | struct ixgbe_adapter *adapter = netdev_priv(netdev); |
Peter P Waskiewicz Jr | 6fabd71 | 2008-12-10 01:13:08 -0800 | [diff] [blame] | 4884 | pci_ers_result_t result; |
| 4885 | int err; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4886 | |
| 4887 | if (pci_enable_device(pdev)) { |
| 4888 | DPRINTK(PROBE, ERR, |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 4889 | "Cannot re-enable PCI device after reset.\n"); |
Peter P Waskiewicz Jr | 6fabd71 | 2008-12-10 01:13:08 -0800 | [diff] [blame] | 4890 | result = PCI_ERS_RESULT_DISCONNECT; |
| 4891 | } else { |
| 4892 | pci_set_master(pdev); |
| 4893 | pci_restore_state(pdev); |
| 4894 | |
| 4895 | pci_enable_wake(pdev, PCI_D3hot, 0); |
| 4896 | pci_enable_wake(pdev, PCI_D3cold, 0); |
| 4897 | |
| 4898 | ixgbe_reset(adapter); |
PJ Waskiewicz | 8851253 | 2009-03-13 22:15:10 +0000 | [diff] [blame] | 4899 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_WUS, ~0); |
Peter P Waskiewicz Jr | 6fabd71 | 2008-12-10 01:13:08 -0800 | [diff] [blame] | 4900 | result = PCI_ERS_RESULT_RECOVERED; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4901 | } |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4902 | |
Peter P Waskiewicz Jr | 6fabd71 | 2008-12-10 01:13:08 -0800 | [diff] [blame] | 4903 | err = pci_cleanup_aer_uncorrect_error_status(pdev); |
| 4904 | if (err) { |
| 4905 | dev_err(&pdev->dev, |
| 4906 | "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n", err); |
| 4907 | /* non-fatal, continue */ |
| 4908 | } |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4909 | |
Peter P Waskiewicz Jr | 6fabd71 | 2008-12-10 01:13:08 -0800 | [diff] [blame] | 4910 | return result; |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4911 | } |
| 4912 | |
| 4913 | /** |
| 4914 | * ixgbe_io_resume - called when traffic can start flowing again. |
| 4915 | * @pdev: Pointer to PCI device |
| 4916 | * |
| 4917 | * This callback is called when the error recovery driver tells us that |
| 4918 | * its OK to resume normal operation. |
| 4919 | */ |
| 4920 | static void ixgbe_io_resume(struct pci_dev *pdev) |
| 4921 | { |
| 4922 | struct net_device *netdev = pci_get_drvdata(pdev); |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 4923 | struct ixgbe_adapter *adapter = netdev_priv(netdev); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4924 | |
| 4925 | if (netif_running(netdev)) { |
| 4926 | if (ixgbe_up(adapter)) { |
| 4927 | DPRINTK(PROBE, INFO, "ixgbe_up failed after reset\n"); |
| 4928 | return; |
| 4929 | } |
| 4930 | } |
| 4931 | |
| 4932 | netif_device_attach(netdev); |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4933 | } |
| 4934 | |
| 4935 | static struct pci_error_handlers ixgbe_err_handler = { |
| 4936 | .error_detected = ixgbe_io_error_detected, |
| 4937 | .slot_reset = ixgbe_io_slot_reset, |
| 4938 | .resume = ixgbe_io_resume, |
| 4939 | }; |
| 4940 | |
| 4941 | static struct pci_driver ixgbe_driver = { |
| 4942 | .name = ixgbe_driver_name, |
| 4943 | .id_table = ixgbe_pci_tbl, |
| 4944 | .probe = ixgbe_probe, |
| 4945 | .remove = __devexit_p(ixgbe_remove), |
| 4946 | #ifdef CONFIG_PM |
| 4947 | .suspend = ixgbe_suspend, |
| 4948 | .resume = ixgbe_resume, |
| 4949 | #endif |
| 4950 | .shutdown = ixgbe_shutdown, |
| 4951 | .err_handler = &ixgbe_err_handler |
| 4952 | }; |
| 4953 | |
| 4954 | /** |
| 4955 | * ixgbe_init_module - Driver Registration Routine |
| 4956 | * |
| 4957 | * ixgbe_init_module is the first routine called when the driver is |
| 4958 | * loaded. All it does is register with the PCI subsystem. |
| 4959 | **/ |
| 4960 | static int __init ixgbe_init_module(void) |
| 4961 | { |
| 4962 | int ret; |
| 4963 | printk(KERN_INFO "%s: %s - version %s\n", ixgbe_driver_name, |
| 4964 | ixgbe_driver_string, ixgbe_driver_version); |
| 4965 | |
| 4966 | printk(KERN_INFO "%s: %s\n", ixgbe_driver_name, ixgbe_copyright); |
| 4967 | |
Jeff Garzik | 5dd2d33 | 2008-10-16 05:09:31 -0400 | [diff] [blame] | 4968 | #ifdef CONFIG_IXGBE_DCA |
Jeb Cramer | bd0362d | 2008-03-03 15:04:02 -0800 | [diff] [blame] | 4969 | dca_register_notify(&dca_notifier); |
Jeb Cramer | bd0362d | 2008-03-03 15:04:02 -0800 | [diff] [blame] | 4970 | #endif |
Jeff Garzik | 5dd2d33 | 2008-10-16 05:09:31 -0400 | [diff] [blame] | 4971 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4972 | ret = pci_register_driver(&ixgbe_driver); |
| 4973 | return ret; |
| 4974 | } |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 4975 | |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4976 | module_init(ixgbe_init_module); |
| 4977 | |
| 4978 | /** |
| 4979 | * ixgbe_exit_module - Driver Exit Cleanup Routine |
| 4980 | * |
| 4981 | * ixgbe_exit_module is called just before the driver is removed |
| 4982 | * from memory. |
| 4983 | **/ |
| 4984 | static void __exit ixgbe_exit_module(void) |
| 4985 | { |
Jeff Garzik | 5dd2d33 | 2008-10-16 05:09:31 -0400 | [diff] [blame] | 4986 | #ifdef CONFIG_IXGBE_DCA |
Jeb Cramer | bd0362d | 2008-03-03 15:04:02 -0800 | [diff] [blame] | 4987 | dca_unregister_notify(&dca_notifier); |
| 4988 | #endif |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 4989 | pci_unregister_driver(&ixgbe_driver); |
| 4990 | } |
Jeb Cramer | bd0362d | 2008-03-03 15:04:02 -0800 | [diff] [blame] | 4991 | |
Jeff Garzik | 5dd2d33 | 2008-10-16 05:09:31 -0400 | [diff] [blame] | 4992 | #ifdef CONFIG_IXGBE_DCA |
Jeb Cramer | bd0362d | 2008-03-03 15:04:02 -0800 | [diff] [blame] | 4993 | static int ixgbe_notify_dca(struct notifier_block *nb, unsigned long event, |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 4994 | void *p) |
Jeb Cramer | bd0362d | 2008-03-03 15:04:02 -0800 | [diff] [blame] | 4995 | { |
| 4996 | int ret_val; |
| 4997 | |
| 4998 | ret_val = driver_for_each_device(&ixgbe_driver.driver, NULL, &event, |
Peter P Waskiewicz | b461724 | 2008-09-11 20:04:46 -0700 | [diff] [blame] | 4999 | __ixgbe_notify_dca); |
Jeb Cramer | bd0362d | 2008-03-03 15:04:02 -0800 | [diff] [blame] | 5000 | |
| 5001 | return ret_val ? NOTIFY_BAD : NOTIFY_DONE; |
| 5002 | } |
Jeb Cramer | bd0362d | 2008-03-03 15:04:02 -0800 | [diff] [blame] | 5003 | |
Alexander Duyck | b453368 | 2009-03-31 21:32:42 +0000 | [diff] [blame] | 5004 | #endif /* CONFIG_IXGBE_DCA */ |
| 5005 | #ifdef DEBUG |
| 5006 | /** |
| 5007 | * ixgbe_get_hw_dev_name - return device name string |
| 5008 | * used by hardware layer to print debugging information |
| 5009 | **/ |
| 5010 | char *ixgbe_get_hw_dev_name(struct ixgbe_hw *hw) |
| 5011 | { |
| 5012 | struct ixgbe_adapter *adapter = hw->back; |
| 5013 | return adapter->netdev->name; |
| 5014 | } |
| 5015 | |
| 5016 | #endif |
Auke Kok | 9a799d7 | 2007-09-15 14:07:45 -0700 | [diff] [blame] | 5017 | module_exit(ixgbe_exit_module); |
| 5018 | |
| 5019 | /* ixgbe_main.c */ |