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Commit | Line | Data |
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1da177e4 LT |
1 | /******************************************************************************* |
2 | ||
0abb6eb1 AK |
3 | Intel PRO/10GbE Linux driver |
4 | Copyright(c) 1999 - 2006 Intel Corporation. | |
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 | |
1da177e4 | 13 | more details. |
0abb6eb1 | 14 | |
1da177e4 | 15 | You should have received a copy of the GNU General Public License along with |
0abb6eb1 AK |
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 | ||
1da177e4 LT |
22 | Contact Information: |
23 | Linux NICS <linux.nics@intel.com> | |
0abb6eb1 | 24 | e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> |
1da177e4 LT |
25 | Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
26 | ||
27 | *******************************************************************************/ | |
28 | ||
29 | #include "ixgb.h" | |
30 | ||
1da177e4 | 31 | char ixgb_driver_name[] = "ixgb"; |
e9ab1d14 | 32 | static char ixgb_driver_string[] = "Intel(R) PRO/10GbE Network Driver"; |
1da177e4 LT |
33 | |
34 | #ifndef CONFIG_IXGB_NAPI | |
35 | #define DRIVERNAPI | |
36 | #else | |
37 | #define DRIVERNAPI "-NAPI" | |
38 | #endif | |
8b32e63d | 39 | #define DRV_VERSION "1.0.126-k4"DRIVERNAPI |
273dc74e SH |
40 | const char ixgb_driver_version[] = DRV_VERSION; |
41 | static const char ixgb_copyright[] = "Copyright (c) 1999-2006 Intel Corporation."; | |
1da177e4 | 42 | |
d9fed18b JB |
43 | #define IXGB_CB_LENGTH 256 |
44 | static unsigned int copybreak __read_mostly = IXGB_CB_LENGTH; | |
45 | module_param(copybreak, uint, 0644); | |
46 | MODULE_PARM_DESC(copybreak, | |
47 | "Maximum size of packet that is copied to a new buffer on receive"); | |
48 | ||
1da177e4 LT |
49 | /* ixgb_pci_tbl - PCI Device ID Table |
50 | * | |
51 | * Wildcard entries (PCI_ANY_ID) should come last | |
52 | * Last entry must be all 0s | |
53 | * | |
54 | * { Vendor ID, Device ID, SubVendor ID, SubDevice ID, | |
55 | * Class, Class Mask, private data (not used) } | |
56 | */ | |
57 | static struct pci_device_id ixgb_pci_tbl[] = { | |
58 | {INTEL_VENDOR_ID, IXGB_DEVICE_ID_82597EX, | |
59 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, | |
940829e2 AK |
60 | {INTEL_VENDOR_ID, IXGB_DEVICE_ID_82597EX_CX4, |
61 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, | |
1da177e4 LT |
62 | {INTEL_VENDOR_ID, IXGB_DEVICE_ID_82597EX_SR, |
63 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, | |
7490d71a | 64 | {INTEL_VENDOR_ID, IXGB_DEVICE_ID_82597EX_LR, |
1da177e4 LT |
65 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, |
66 | ||
67 | /* required last entry */ | |
68 | {0,} | |
69 | }; | |
70 | ||
71 | MODULE_DEVICE_TABLE(pci, ixgb_pci_tbl); | |
72 | ||
73 | /* Local Function Prototypes */ | |
1da177e4 LT |
74 | static int ixgb_init_module(void); |
75 | static void ixgb_exit_module(void); | |
76 | static int ixgb_probe(struct pci_dev *pdev, const struct pci_device_id *ent); | |
77 | static void __devexit ixgb_remove(struct pci_dev *pdev); | |
78 | static int ixgb_sw_init(struct ixgb_adapter *adapter); | |
79 | static int ixgb_open(struct net_device *netdev); | |
80 | static int ixgb_close(struct net_device *netdev); | |
81 | static void ixgb_configure_tx(struct ixgb_adapter *adapter); | |
82 | static void ixgb_configure_rx(struct ixgb_adapter *adapter); | |
83 | static void ixgb_setup_rctl(struct ixgb_adapter *adapter); | |
84 | static void ixgb_clean_tx_ring(struct ixgb_adapter *adapter); | |
85 | static void ixgb_clean_rx_ring(struct ixgb_adapter *adapter); | |
86 | static void ixgb_set_multi(struct net_device *netdev); | |
87 | static void ixgb_watchdog(unsigned long data); | |
88 | static int ixgb_xmit_frame(struct sk_buff *skb, struct net_device *netdev); | |
89 | static struct net_device_stats *ixgb_get_stats(struct net_device *netdev); | |
90 | static int ixgb_change_mtu(struct net_device *netdev, int new_mtu); | |
91 | static int ixgb_set_mac(struct net_device *netdev, void *p); | |
7d12e780 | 92 | static irqreturn_t ixgb_intr(int irq, void *data); |
446490ca | 93 | static bool ixgb_clean_tx_irq(struct ixgb_adapter *adapter); |
ac79c82e | 94 | |
1da177e4 | 95 | #ifdef CONFIG_IXGB_NAPI |
7490d71a JB |
96 | static int ixgb_clean(struct napi_struct *, int); |
97 | static bool ixgb_clean_rx_irq(struct ixgb_adapter *, int *, int); | |
1da177e4 | 98 | #else |
7490d71a | 99 | static bool ixgb_clean_rx_irq(struct ixgb_adapter *); |
1da177e4 | 100 | #endif |
fc2d14e3 | 101 | static void ixgb_alloc_rx_buffers(struct ixgb_adapter *, int); |
7490d71a | 102 | |
1da177e4 | 103 | static void ixgb_tx_timeout(struct net_device *dev); |
c4028958 | 104 | static void ixgb_tx_timeout_task(struct work_struct *work); |
7490d71a | 105 | |
1da177e4 | 106 | static void ixgb_vlan_rx_register(struct net_device *netdev, |
7490d71a | 107 | struct vlan_group *grp); |
222441a6 JP |
108 | static void ixgb_vlan_rx_add_vid(struct net_device *netdev, u16 vid); |
109 | static void ixgb_vlan_rx_kill_vid(struct net_device *netdev, u16 vid); | |
1da177e4 LT |
110 | static void ixgb_restore_vlan(struct ixgb_adapter *adapter); |
111 | ||
1da177e4 LT |
112 | #ifdef CONFIG_NET_POLL_CONTROLLER |
113 | /* for netdump / net console */ | |
114 | static void ixgb_netpoll(struct net_device *dev); | |
115 | #endif | |
116 | ||
01748fbb | 117 | static pci_ers_result_t ixgb_io_error_detected (struct pci_dev *pdev, |
7490d71a | 118 | enum pci_channel_state state); |
01748fbb LV |
119 | static pci_ers_result_t ixgb_io_slot_reset (struct pci_dev *pdev); |
120 | static void ixgb_io_resume (struct pci_dev *pdev); | |
1da177e4 | 121 | |
01748fbb LV |
122 | static struct pci_error_handlers ixgb_err_handler = { |
123 | .error_detected = ixgb_io_error_detected, | |
124 | .slot_reset = ixgb_io_slot_reset, | |
125 | .resume = ixgb_io_resume, | |
126 | }; | |
127 | ||
1da177e4 | 128 | static struct pci_driver ixgb_driver = { |
c2eba932 | 129 | .name = ixgb_driver_name, |
1da177e4 | 130 | .id_table = ixgb_pci_tbl, |
c2eba932 MC |
131 | .probe = ixgb_probe, |
132 | .remove = __devexit_p(ixgb_remove), | |
01748fbb | 133 | .err_handler = &ixgb_err_handler |
1da177e4 LT |
134 | }; |
135 | ||
136 | MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>"); | |
137 | MODULE_DESCRIPTION("Intel(R) PRO/10GbE Network Driver"); | |
138 | MODULE_LICENSE("GPL"); | |
01e5abc2 | 139 | MODULE_VERSION(DRV_VERSION); |
1da177e4 | 140 | |
ec9c3f5d AK |
141 | #define DEFAULT_DEBUG_LEVEL_SHIFT 3 |
142 | static int debug = DEFAULT_DEBUG_LEVEL_SHIFT; | |
143 | module_param(debug, int, 0); | |
144 | MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)"); | |
145 | ||
1da177e4 LT |
146 | /** |
147 | * ixgb_init_module - Driver Registration Routine | |
148 | * | |
149 | * ixgb_init_module is the first routine called when the driver is | |
150 | * loaded. All it does is register with the PCI subsystem. | |
151 | **/ | |
152 | ||
153 | static int __init | |
154 | ixgb_init_module(void) | |
155 | { | |
1da177e4 LT |
156 | printk(KERN_INFO "%s - version %s\n", |
157 | ixgb_driver_string, ixgb_driver_version); | |
158 | ||
159 | printk(KERN_INFO "%s\n", ixgb_copyright); | |
160 | ||
29917620 | 161 | return pci_register_driver(&ixgb_driver); |
1da177e4 LT |
162 | } |
163 | ||
164 | module_init(ixgb_init_module); | |
165 | ||
166 | /** | |
167 | * ixgb_exit_module - Driver Exit Cleanup Routine | |
168 | * | |
169 | * ixgb_exit_module is called just before the driver is removed | |
170 | * from memory. | |
171 | **/ | |
172 | ||
173 | static void __exit | |
174 | ixgb_exit_module(void) | |
175 | { | |
1da177e4 LT |
176 | pci_unregister_driver(&ixgb_driver); |
177 | } | |
178 | ||
179 | module_exit(ixgb_exit_module); | |
180 | ||
181 | /** | |
182 | * ixgb_irq_disable - Mask off interrupt generation on the NIC | |
183 | * @adapter: board private structure | |
184 | **/ | |
185 | ||
235949d1 | 186 | static void |
1da177e4 LT |
187 | ixgb_irq_disable(struct ixgb_adapter *adapter) |
188 | { | |
1da177e4 LT |
189 | IXGB_WRITE_REG(&adapter->hw, IMC, ~0); |
190 | IXGB_WRITE_FLUSH(&adapter->hw); | |
191 | synchronize_irq(adapter->pdev->irq); | |
192 | } | |
193 | ||
194 | /** | |
195 | * ixgb_irq_enable - Enable default interrupt generation settings | |
196 | * @adapter: board private structure | |
197 | **/ | |
198 | ||
235949d1 | 199 | static void |
1da177e4 LT |
200 | ixgb_irq_enable(struct ixgb_adapter *adapter) |
201 | { | |
9c61a9dc JB |
202 | u32 val = IXGB_INT_RXT0 | IXGB_INT_RXDMT0 | |
203 | IXGB_INT_TXDW | IXGB_INT_LSC; | |
204 | if (adapter->hw.subsystem_vendor_id == SUN_SUBVENDOR_ID) | |
205 | val |= IXGB_INT_GPI0; | |
206 | IXGB_WRITE_REG(&adapter->hw, IMS, val); | |
207 | IXGB_WRITE_FLUSH(&adapter->hw); | |
1da177e4 LT |
208 | } |
209 | ||
210 | int | |
211 | ixgb_up(struct ixgb_adapter *adapter) | |
212 | { | |
213 | struct net_device *netdev = adapter->netdev; | |
fb136c07 | 214 | int err, irq_flags = IRQF_SHARED; |
1da177e4 LT |
215 | int max_frame = netdev->mtu + ENET_HEADER_SIZE + ENET_FCS_LENGTH; |
216 | struct ixgb_hw *hw = &adapter->hw; | |
217 | ||
218 | /* hardware has been reset, we need to reload some things */ | |
219 | ||
8556f0d1 | 220 | ixgb_rar_set(hw, netdev->dev_addr, 0); |
1da177e4 LT |
221 | ixgb_set_multi(netdev); |
222 | ||
223 | ixgb_restore_vlan(adapter); | |
224 | ||
225 | ixgb_configure_tx(adapter); | |
226 | ixgb_setup_rctl(adapter); | |
227 | ixgb_configure_rx(adapter); | |
fc2d14e3 | 228 | ixgb_alloc_rx_buffers(adapter, IXGB_DESC_UNUSED(&adapter->rx_ring)); |
1da177e4 | 229 | |
e59d1696 AK |
230 | /* disable interrupts and get the hardware into a known state */ |
231 | IXGB_WRITE_REG(&adapter->hw, IMC, 0xffffffff); | |
232 | ||
fb136c07 AK |
233 | /* only enable MSI if bus is in PCI-X mode */ |
234 | if (IXGB_READ_REG(&adapter->hw, STATUS) & IXGB_STATUS_PCIX_MODE) { | |
235 | err = pci_enable_msi(adapter->pdev); | |
236 | if (!err) { | |
237 | adapter->have_msi = 1; | |
238 | irq_flags = 0; | |
239 | } | |
1da177e4 LT |
240 | /* proceed to try to request regular interrupt */ |
241 | } | |
1da177e4 | 242 | |
fb136c07 AK |
243 | err = request_irq(adapter->pdev->irq, &ixgb_intr, irq_flags, |
244 | netdev->name, netdev); | |
245 | if (err) { | |
246 | if (adapter->have_msi) | |
247 | pci_disable_msi(adapter->pdev); | |
ec9c3f5d AK |
248 | DPRINTK(PROBE, ERR, |
249 | "Unable to allocate interrupt Error: %d\n", err); | |
1da177e4 | 250 | return err; |
ec9c3f5d | 251 | } |
1da177e4 | 252 | |
03f83041 | 253 | if ((hw->max_frame_size != max_frame) || |
1da177e4 LT |
254 | (hw->max_frame_size != |
255 | (IXGB_READ_REG(hw, MFS) >> IXGB_MFS_SHIFT))) { | |
256 | ||
257 | hw->max_frame_size = max_frame; | |
258 | ||
259 | IXGB_WRITE_REG(hw, MFS, hw->max_frame_size << IXGB_MFS_SHIFT); | |
260 | ||
03f83041 | 261 | if (hw->max_frame_size > |
1da177e4 | 262 | IXGB_MAX_ENET_FRAME_SIZE_WITHOUT_FCS + ENET_FCS_LENGTH) { |
222441a6 | 263 | u32 ctrl0 = IXGB_READ_REG(hw, CTRL0); |
1da177e4 | 264 | |
03f83041 | 265 | if (!(ctrl0 & IXGB_CTRL0_JFE)) { |
1da177e4 LT |
266 | ctrl0 |= IXGB_CTRL0_JFE; |
267 | IXGB_WRITE_REG(hw, CTRL0, ctrl0); | |
268 | } | |
269 | } | |
270 | } | |
271 | ||
bab2bce7 | 272 | clear_bit(__IXGB_DOWN, &adapter->flags); |
1da177e4 LT |
273 | |
274 | #ifdef CONFIG_IXGB_NAPI | |
bea3348e | 275 | napi_enable(&adapter->napi); |
1da177e4 | 276 | #endif |
e59d1696 AK |
277 | ixgb_irq_enable(adapter); |
278 | ||
bab2bce7 JB |
279 | mod_timer(&adapter->watchdog_timer, jiffies); |
280 | ||
1da177e4 LT |
281 | return 0; |
282 | } | |
283 | ||
284 | void | |
446490ca | 285 | ixgb_down(struct ixgb_adapter *adapter, bool kill_watchdog) |
1da177e4 LT |
286 | { |
287 | struct net_device *netdev = adapter->netdev; | |
288 | ||
bab2bce7 JB |
289 | /* prevent the interrupt handler from restarting watchdog */ |
290 | set_bit(__IXGB_DOWN, &adapter->flags); | |
291 | ||
49d85c50 DM |
292 | #ifdef CONFIG_IXGB_NAPI |
293 | napi_disable(&adapter->napi); | |
49d85c50 | 294 | #endif |
bab2bce7 | 295 | /* waiting for NAPI to complete can re-enable interrupts */ |
1da177e4 LT |
296 | ixgb_irq_disable(adapter); |
297 | free_irq(adapter->pdev->irq, netdev); | |
fb136c07 AK |
298 | |
299 | if (adapter->have_msi) | |
1da177e4 LT |
300 | pci_disable_msi(adapter->pdev); |
301 | ||
03f83041 | 302 | if (kill_watchdog) |
1da177e4 | 303 | del_timer_sync(&adapter->watchdog_timer); |
49d85c50 | 304 | |
1da177e4 LT |
305 | adapter->link_speed = 0; |
306 | adapter->link_duplex = 0; | |
307 | netif_carrier_off(netdev); | |
308 | netif_stop_queue(netdev); | |
309 | ||
310 | ixgb_reset(adapter); | |
311 | ixgb_clean_tx_ring(adapter); | |
312 | ixgb_clean_rx_ring(adapter); | |
313 | } | |
314 | ||
315 | void | |
316 | ixgb_reset(struct ixgb_adapter *adapter) | |
317 | { | |
3fd7131f | 318 | struct ixgb_hw *hw = &adapter->hw; |
1da177e4 | 319 | |
3fd7131f MW |
320 | ixgb_adapter_stop(hw); |
321 | if (!ixgb_init_hw(hw)) | |
ec9c3f5d | 322 | DPRINTK(PROBE, ERR, "ixgb_init_hw failed.\n"); |
3fd7131f MW |
323 | |
324 | /* restore frame size information */ | |
325 | IXGB_WRITE_REG(hw, MFS, hw->max_frame_size << IXGB_MFS_SHIFT); | |
326 | if (hw->max_frame_size > | |
327 | IXGB_MAX_ENET_FRAME_SIZE_WITHOUT_FCS + ENET_FCS_LENGTH) { | |
328 | u32 ctrl0 = IXGB_READ_REG(hw, CTRL0); | |
329 | if (!(ctrl0 & IXGB_CTRL0_JFE)) { | |
330 | ctrl0 |= IXGB_CTRL0_JFE; | |
331 | IXGB_WRITE_REG(hw, CTRL0, ctrl0); | |
332 | } | |
333 | } | |
1da177e4 LT |
334 | } |
335 | ||
336 | /** | |
337 | * ixgb_probe - Device Initialization Routine | |
338 | * @pdev: PCI device information struct | |
339 | * @ent: entry in ixgb_pci_tbl | |
340 | * | |
341 | * Returns 0 on success, negative on failure | |
342 | * | |
343 | * ixgb_probe initializes an adapter identified by a pci_dev structure. | |
344 | * The OS initialization, configuring of the adapter private structure, | |
345 | * and a hardware reset occur. | |
346 | **/ | |
347 | ||
348 | static int __devinit | |
0060c072 | 349 | ixgb_probe(struct pci_dev *pdev, const struct pci_device_id *ent) |
1da177e4 LT |
350 | { |
351 | struct net_device *netdev = NULL; | |
352 | struct ixgb_adapter *adapter; | |
353 | static int cards_found = 0; | |
1da177e4 LT |
354 | int pci_using_dac; |
355 | int i; | |
356 | int err; | |
357 | ||
9e7bd330 JB |
358 | err = pci_enable_device(pdev); |
359 | if (err) | |
1da177e4 LT |
360 | return err; |
361 | ||
03f83041 | 362 | if (!(err = pci_set_dma_mask(pdev, DMA_64BIT_MASK)) && |
9e7bd330 | 363 | !(err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK))) { |
1da177e4 LT |
364 | pci_using_dac = 1; |
365 | } else { | |
03f83041 | 366 | if ((err = pci_set_dma_mask(pdev, DMA_32BIT_MASK)) || |
9e7bd330 | 367 | (err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK))) { |
ec9c3f5d AK |
368 | printk(KERN_ERR |
369 | "ixgb: No usable DMA configuration, aborting\n"); | |
c91e468a | 370 | goto err_dma_mask; |
1da177e4 LT |
371 | } |
372 | pci_using_dac = 0; | |
373 | } | |
374 | ||
9e7bd330 JB |
375 | err = pci_request_regions(pdev, ixgb_driver_name); |
376 | if (err) | |
c91e468a | 377 | goto err_request_regions; |
1da177e4 LT |
378 | |
379 | pci_set_master(pdev); | |
380 | ||
381 | netdev = alloc_etherdev(sizeof(struct ixgb_adapter)); | |
03f83041 | 382 | if (!netdev) { |
1da177e4 LT |
383 | err = -ENOMEM; |
384 | goto err_alloc_etherdev; | |
385 | } | |
386 | ||
1da177e4 LT |
387 | SET_NETDEV_DEV(netdev, &pdev->dev); |
388 | ||
389 | pci_set_drvdata(pdev, netdev); | |
8908c6cd | 390 | adapter = netdev_priv(netdev); |
1da177e4 LT |
391 | adapter->netdev = netdev; |
392 | adapter->pdev = pdev; | |
393 | adapter->hw.back = adapter; | |
ec9c3f5d | 394 | adapter->msg_enable = netif_msg_init(debug, DEFAULT_DEBUG_LEVEL_SHIFT); |
1da177e4 | 395 | |
e539e466 JB |
396 | adapter->hw.hw_addr = ioremap(pci_resource_start(pdev, BAR_0), |
397 | pci_resource_len(pdev, BAR_0)); | |
398 | if (!adapter->hw.hw_addr) { | |
1da177e4 LT |
399 | err = -EIO; |
400 | goto err_ioremap; | |
401 | } | |
402 | ||
1459336d | 403 | for (i = BAR_1; i <= BAR_5; i++) { |
03f83041 | 404 | if (pci_resource_len(pdev, i) == 0) |
1da177e4 | 405 | continue; |
03f83041 | 406 | if (pci_resource_flags(pdev, i) & IORESOURCE_IO) { |
1da177e4 LT |
407 | adapter->hw.io_base = pci_resource_start(pdev, i); |
408 | break; | |
409 | } | |
410 | } | |
411 | ||
412 | netdev->open = &ixgb_open; | |
413 | netdev->stop = &ixgb_close; | |
414 | netdev->hard_start_xmit = &ixgb_xmit_frame; | |
415 | netdev->get_stats = &ixgb_get_stats; | |
416 | netdev->set_multicast_list = &ixgb_set_multi; | |
417 | netdev->set_mac_address = &ixgb_set_mac; | |
418 | netdev->change_mtu = &ixgb_change_mtu; | |
419 | ixgb_set_ethtool_ops(netdev); | |
420 | netdev->tx_timeout = &ixgb_tx_timeout; | |
9b8118df | 421 | netdev->watchdog_timeo = 5 * HZ; |
1da177e4 | 422 | #ifdef CONFIG_IXGB_NAPI |
bea3348e | 423 | netif_napi_add(netdev, &adapter->napi, ixgb_clean, 64); |
1da177e4 LT |
424 | #endif |
425 | netdev->vlan_rx_register = ixgb_vlan_rx_register; | |
426 | netdev->vlan_rx_add_vid = ixgb_vlan_rx_add_vid; | |
427 | netdev->vlan_rx_kill_vid = ixgb_vlan_rx_kill_vid; | |
428 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
429 | netdev->poll_controller = ixgb_netpoll; | |
430 | #endif | |
431 | ||
0eb5a34c | 432 | strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1); |
1da177e4 LT |
433 | |
434 | adapter->bd_number = cards_found; | |
435 | adapter->link_speed = 0; | |
436 | adapter->link_duplex = 0; | |
437 | ||
438 | /* setup the private structure */ | |
439 | ||
9e7bd330 JB |
440 | err = ixgb_sw_init(adapter); |
441 | if (err) | |
1da177e4 LT |
442 | goto err_sw_init; |
443 | ||
444 | netdev->features = NETIF_F_SG | | |
445 | NETIF_F_HW_CSUM | | |
446 | NETIF_F_HW_VLAN_TX | | |
447 | NETIF_F_HW_VLAN_RX | | |
448 | NETIF_F_HW_VLAN_FILTER; | |
1da177e4 | 449 | netdev->features |= NETIF_F_TSO; |
1da177e4 | 450 | |
03f83041 | 451 | if (pci_using_dac) |
1da177e4 LT |
452 | netdev->features |= NETIF_F_HIGHDMA; |
453 | ||
454 | /* make sure the EEPROM is good */ | |
455 | ||
03f83041 | 456 | if (!ixgb_validate_eeprom_checksum(&adapter->hw)) { |
ec9c3f5d | 457 | DPRINTK(PROBE, ERR, "The EEPROM Checksum Is Not Valid\n"); |
1da177e4 LT |
458 | err = -EIO; |
459 | goto err_eeprom; | |
460 | } | |
461 | ||
462 | ixgb_get_ee_mac_addr(&adapter->hw, netdev->dev_addr); | |
df859c51 | 463 | memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len); |
1da177e4 | 464 | |
03f83041 | 465 | if (!is_valid_ether_addr(netdev->perm_addr)) { |
ec9c3f5d | 466 | DPRINTK(PROBE, ERR, "Invalid MAC Address\n"); |
1da177e4 LT |
467 | err = -EIO; |
468 | goto err_eeprom; | |
469 | } | |
470 | ||
471 | adapter->part_num = ixgb_get_ee_pba_number(&adapter->hw); | |
472 | ||
473 | init_timer(&adapter->watchdog_timer); | |
474 | adapter->watchdog_timer.function = &ixgb_watchdog; | |
475 | adapter->watchdog_timer.data = (unsigned long)adapter; | |
476 | ||
c4028958 | 477 | INIT_WORK(&adapter->tx_timeout_task, ixgb_tx_timeout_task); |
1da177e4 | 478 | |
ec9c3f5d | 479 | strcpy(netdev->name, "eth%d"); |
9e7bd330 JB |
480 | err = register_netdev(netdev); |
481 | if (err) | |
1da177e4 LT |
482 | goto err_register; |
483 | ||
484 | /* we're going to reset, so assume we have no link for now */ | |
485 | ||
486 | netif_carrier_off(netdev); | |
487 | netif_stop_queue(netdev); | |
488 | ||
ec9c3f5d | 489 | DPRINTK(PROBE, INFO, "Intel(R) PRO/10GbE Network Connection\n"); |
1da177e4 LT |
490 | ixgb_check_options(adapter); |
491 | /* reset the hardware with the new settings */ | |
492 | ||
493 | ixgb_reset(adapter); | |
494 | ||
495 | cards_found++; | |
496 | return 0; | |
497 | ||
498 | err_register: | |
499 | err_sw_init: | |
500 | err_eeprom: | |
501 | iounmap(adapter->hw.hw_addr); | |
502 | err_ioremap: | |
503 | free_netdev(netdev); | |
504 | err_alloc_etherdev: | |
505 | pci_release_regions(pdev); | |
c91e468a AS |
506 | err_request_regions: |
507 | err_dma_mask: | |
508 | pci_disable_device(pdev); | |
1da177e4 LT |
509 | return err; |
510 | } | |
511 | ||
512 | /** | |
513 | * ixgb_remove - Device Removal Routine | |
514 | * @pdev: PCI device information struct | |
515 | * | |
516 | * ixgb_remove is called by the PCI subsystem to alert the driver | |
517 | * that it should release a PCI device. The could be caused by a | |
518 | * Hot-Plug event, or because the driver is going to be removed from | |
519 | * memory. | |
520 | **/ | |
521 | ||
522 | static void __devexit | |
523 | ixgb_remove(struct pci_dev *pdev) | |
524 | { | |
525 | struct net_device *netdev = pci_get_drvdata(pdev); | |
8908c6cd | 526 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
1da177e4 | 527 | |
12579697 JB |
528 | flush_scheduled_work(); |
529 | ||
1da177e4 LT |
530 | unregister_netdev(netdev); |
531 | ||
532 | iounmap(adapter->hw.hw_addr); | |
533 | pci_release_regions(pdev); | |
534 | ||
535 | free_netdev(netdev); | |
536 | } | |
537 | ||
538 | /** | |
539 | * ixgb_sw_init - Initialize general software structures (struct ixgb_adapter) | |
540 | * @adapter: board private structure to initialize | |
541 | * | |
542 | * ixgb_sw_init initializes the Adapter private data structure. | |
543 | * Fields are initialized based on PCI device information and | |
544 | * OS network device settings (MTU size). | |
545 | **/ | |
546 | ||
547 | static int __devinit | |
548 | ixgb_sw_init(struct ixgb_adapter *adapter) | |
549 | { | |
550 | struct ixgb_hw *hw = &adapter->hw; | |
551 | struct net_device *netdev = adapter->netdev; | |
552 | struct pci_dev *pdev = adapter->pdev; | |
553 | ||
554 | /* PCI config space info */ | |
555 | ||
556 | hw->vendor_id = pdev->vendor; | |
557 | hw->device_id = pdev->device; | |
558 | hw->subsystem_vendor_id = pdev->subsystem_vendor; | |
559 | hw->subsystem_id = pdev->subsystem_device; | |
560 | ||
1da177e4 | 561 | hw->max_frame_size = netdev->mtu + ENET_HEADER_SIZE + ENET_FCS_LENGTH; |
a3dc3da0 | 562 | adapter->rx_buffer_len = hw->max_frame_size + 8; /* + 8 for errata */ |
1da177e4 | 563 | |
03f83041 | 564 | if ((hw->device_id == IXGB_DEVICE_ID_82597EX) |
940829e2 AK |
565 | || (hw->device_id == IXGB_DEVICE_ID_82597EX_CX4) |
566 | || (hw->device_id == IXGB_DEVICE_ID_82597EX_LR) | |
567 | || (hw->device_id == IXGB_DEVICE_ID_82597EX_SR)) | |
0060c072 | 568 | hw->mac_type = ixgb_82597; |
1da177e4 LT |
569 | else { |
570 | /* should never have loaded on this device */ | |
ec9c3f5d | 571 | DPRINTK(PROBE, ERR, "unsupported device id\n"); |
1da177e4 LT |
572 | } |
573 | ||
574 | /* enable flow control to be programmed */ | |
575 | hw->fc.send_xon = 1; | |
576 | ||
bab2bce7 | 577 | set_bit(__IXGB_DOWN, &adapter->flags); |
1da177e4 LT |
578 | return 0; |
579 | } | |
580 | ||
581 | /** | |
582 | * ixgb_open - Called when a network interface is made active | |
583 | * @netdev: network interface device structure | |
584 | * | |
585 | * Returns 0 on success, negative value on failure | |
586 | * | |
587 | * The open entry point is called when a network interface is made | |
588 | * active by the system (IFF_UP). At this point all resources needed | |
589 | * for transmit and receive operations are allocated, the interrupt | |
590 | * handler is registered with the OS, the watchdog timer is started, | |
591 | * and the stack is notified that the interface is ready. | |
592 | **/ | |
593 | ||
594 | static int | |
595 | ixgb_open(struct net_device *netdev) | |
596 | { | |
8908c6cd | 597 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
598 | int err; |
599 | ||
600 | /* allocate transmit descriptors */ | |
9e7bd330 JB |
601 | err = ixgb_setup_tx_resources(adapter); |
602 | if (err) | |
1da177e4 LT |
603 | goto err_setup_tx; |
604 | ||
605 | /* allocate receive descriptors */ | |
606 | ||
9e7bd330 JB |
607 | err = ixgb_setup_rx_resources(adapter); |
608 | if (err) | |
1da177e4 LT |
609 | goto err_setup_rx; |
610 | ||
9e7bd330 JB |
611 | err = ixgb_up(adapter); |
612 | if (err) | |
1da177e4 LT |
613 | goto err_up; |
614 | ||
615 | return 0; | |
616 | ||
617 | err_up: | |
618 | ixgb_free_rx_resources(adapter); | |
619 | err_setup_rx: | |
620 | ixgb_free_tx_resources(adapter); | |
621 | err_setup_tx: | |
622 | ixgb_reset(adapter); | |
623 | ||
624 | return err; | |
625 | } | |
626 | ||
627 | /** | |
628 | * ixgb_close - Disables a network interface | |
629 | * @netdev: network interface device structure | |
630 | * | |
631 | * Returns 0, this is not allowed to fail | |
632 | * | |
633 | * The close entry point is called when an interface is de-activated | |
634 | * by the OS. The hardware is still under the drivers control, but | |
635 | * needs to be disabled. A global MAC reset is issued to stop the | |
636 | * hardware, and all transmit and receive resources are freed. | |
637 | **/ | |
638 | ||
639 | static int | |
640 | ixgb_close(struct net_device *netdev) | |
641 | { | |
8908c6cd | 642 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
1da177e4 | 643 | |
446490ca | 644 | ixgb_down(adapter, true); |
1da177e4 LT |
645 | |
646 | ixgb_free_tx_resources(adapter); | |
647 | ixgb_free_rx_resources(adapter); | |
648 | ||
649 | return 0; | |
650 | } | |
651 | ||
652 | /** | |
653 | * ixgb_setup_tx_resources - allocate Tx resources (Descriptors) | |
654 | * @adapter: board private structure | |
655 | * | |
656 | * Return 0 on success, negative on failure | |
657 | **/ | |
658 | ||
659 | int | |
660 | ixgb_setup_tx_resources(struct ixgb_adapter *adapter) | |
661 | { | |
662 | struct ixgb_desc_ring *txdr = &adapter->tx_ring; | |
663 | struct pci_dev *pdev = adapter->pdev; | |
664 | int size; | |
665 | ||
666 | size = sizeof(struct ixgb_buffer) * txdr->count; | |
667 | txdr->buffer_info = vmalloc(size); | |
03f83041 | 668 | if (!txdr->buffer_info) { |
ec9c3f5d AK |
669 | DPRINTK(PROBE, ERR, |
670 | "Unable to allocate transmit descriptor ring memory\n"); | |
1da177e4 LT |
671 | return -ENOMEM; |
672 | } | |
673 | memset(txdr->buffer_info, 0, size); | |
674 | ||
675 | /* round up to nearest 4K */ | |
676 | ||
677 | txdr->size = txdr->count * sizeof(struct ixgb_tx_desc); | |
55e924cf | 678 | txdr->size = ALIGN(txdr->size, 4096); |
1da177e4 LT |
679 | |
680 | txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma); | |
03f83041 | 681 | if (!txdr->desc) { |
1da177e4 | 682 | vfree(txdr->buffer_info); |
ec9c3f5d AK |
683 | DPRINTK(PROBE, ERR, |
684 | "Unable to allocate transmit descriptor memory\n"); | |
1da177e4 LT |
685 | return -ENOMEM; |
686 | } | |
687 | memset(txdr->desc, 0, txdr->size); | |
688 | ||
689 | txdr->next_to_use = 0; | |
690 | txdr->next_to_clean = 0; | |
691 | ||
692 | return 0; | |
693 | } | |
694 | ||
695 | /** | |
696 | * ixgb_configure_tx - Configure 82597 Transmit Unit after Reset. | |
697 | * @adapter: board private structure | |
698 | * | |
699 | * Configure the Tx unit of the MAC after a reset. | |
700 | **/ | |
701 | ||
702 | static void | |
703 | ixgb_configure_tx(struct ixgb_adapter *adapter) | |
704 | { | |
222441a6 JP |
705 | u64 tdba = adapter->tx_ring.dma; |
706 | u32 tdlen = adapter->tx_ring.count * sizeof(struct ixgb_tx_desc); | |
707 | u32 tctl; | |
1da177e4 LT |
708 | struct ixgb_hw *hw = &adapter->hw; |
709 | ||
0060c072 JB |
710 | /* Setup the Base and Length of the Tx Descriptor Ring |
711 | * tx_ring.dma can be either a 32 or 64 bit value | |
1da177e4 LT |
712 | */ |
713 | ||
714 | IXGB_WRITE_REG(hw, TDBAL, (tdba & 0x00000000ffffffffULL)); | |
715 | IXGB_WRITE_REG(hw, TDBAH, (tdba >> 32)); | |
716 | ||
717 | IXGB_WRITE_REG(hw, TDLEN, tdlen); | |
718 | ||
719 | /* Setup the HW Tx Head and Tail descriptor pointers */ | |
720 | ||
721 | IXGB_WRITE_REG(hw, TDH, 0); | |
722 | IXGB_WRITE_REG(hw, TDT, 0); | |
723 | ||
724 | /* don't set up txdctl, it induces performance problems if configured | |
725 | * incorrectly */ | |
726 | /* Set the Tx Interrupt Delay register */ | |
727 | ||
728 | IXGB_WRITE_REG(hw, TIDV, adapter->tx_int_delay); | |
729 | ||
730 | /* Program the Transmit Control Register */ | |
731 | ||
732 | tctl = IXGB_TCTL_TCE | IXGB_TCTL_TXEN | IXGB_TCTL_TPDE; | |
733 | IXGB_WRITE_REG(hw, TCTL, tctl); | |
734 | ||
735 | /* Setup Transmit Descriptor Settings for this adapter */ | |
736 | adapter->tx_cmd_type = | |
0060c072 JB |
737 | IXGB_TX_DESC_TYPE | |
738 | (adapter->tx_int_delay_enable ? IXGB_TX_DESC_CMD_IDE : 0); | |
1da177e4 LT |
739 | } |
740 | ||
741 | /** | |
742 | * ixgb_setup_rx_resources - allocate Rx resources (Descriptors) | |
743 | * @adapter: board private structure | |
744 | * | |
745 | * Returns 0 on success, negative on failure | |
746 | **/ | |
747 | ||
748 | int | |
749 | ixgb_setup_rx_resources(struct ixgb_adapter *adapter) | |
750 | { | |
751 | struct ixgb_desc_ring *rxdr = &adapter->rx_ring; | |
752 | struct pci_dev *pdev = adapter->pdev; | |
753 | int size; | |
754 | ||
755 | size = sizeof(struct ixgb_buffer) * rxdr->count; | |
756 | rxdr->buffer_info = vmalloc(size); | |
03f83041 | 757 | if (!rxdr->buffer_info) { |
ec9c3f5d AK |
758 | DPRINTK(PROBE, ERR, |
759 | "Unable to allocate receive descriptor ring\n"); | |
1da177e4 LT |
760 | return -ENOMEM; |
761 | } | |
762 | memset(rxdr->buffer_info, 0, size); | |
763 | ||
764 | /* Round up to nearest 4K */ | |
765 | ||
766 | rxdr->size = rxdr->count * sizeof(struct ixgb_rx_desc); | |
55e924cf | 767 | rxdr->size = ALIGN(rxdr->size, 4096); |
1da177e4 LT |
768 | |
769 | rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma); | |
770 | ||
03f83041 | 771 | if (!rxdr->desc) { |
1da177e4 | 772 | vfree(rxdr->buffer_info); |
ec9c3f5d AK |
773 | DPRINTK(PROBE, ERR, |
774 | "Unable to allocate receive descriptors\n"); | |
1da177e4 LT |
775 | return -ENOMEM; |
776 | } | |
777 | memset(rxdr->desc, 0, rxdr->size); | |
778 | ||
779 | rxdr->next_to_clean = 0; | |
780 | rxdr->next_to_use = 0; | |
781 | ||
782 | return 0; | |
783 | } | |
784 | ||
785 | /** | |
786 | * ixgb_setup_rctl - configure the receive control register | |
787 | * @adapter: Board private structure | |
788 | **/ | |
789 | ||
790 | static void | |
791 | ixgb_setup_rctl(struct ixgb_adapter *adapter) | |
792 | { | |
222441a6 | 793 | u32 rctl; |
1da177e4 LT |
794 | |
795 | rctl = IXGB_READ_REG(&adapter->hw, RCTL); | |
796 | ||
797 | rctl &= ~(3 << IXGB_RCTL_MO_SHIFT); | |
798 | ||
799 | rctl |= | |
0060c072 JB |
800 | IXGB_RCTL_BAM | IXGB_RCTL_RDMTS_1_2 | |
801 | IXGB_RCTL_RXEN | IXGB_RCTL_CFF | | |
1da177e4 LT |
802 | (adapter->hw.mc_filter_type << IXGB_RCTL_MO_SHIFT); |
803 | ||
804 | rctl |= IXGB_RCTL_SECRC; | |
805 | ||
3f3dc0dd | 806 | if (adapter->rx_buffer_len <= IXGB_RXBUFFER_2048) |
1da177e4 | 807 | rctl |= IXGB_RCTL_BSIZE_2048; |
3f3dc0dd | 808 | else if (adapter->rx_buffer_len <= IXGB_RXBUFFER_4096) |
1da177e4 | 809 | rctl |= IXGB_RCTL_BSIZE_4096; |
3f3dc0dd | 810 | else if (adapter->rx_buffer_len <= IXGB_RXBUFFER_8192) |
1da177e4 | 811 | rctl |= IXGB_RCTL_BSIZE_8192; |
3f3dc0dd | 812 | else if (adapter->rx_buffer_len <= IXGB_RXBUFFER_16384) |
1da177e4 | 813 | rctl |= IXGB_RCTL_BSIZE_16384; |
1da177e4 LT |
814 | |
815 | IXGB_WRITE_REG(&adapter->hw, RCTL, rctl); | |
816 | } | |
817 | ||
818 | /** | |
819 | * ixgb_configure_rx - Configure 82597 Receive Unit after Reset. | |
820 | * @adapter: board private structure | |
821 | * | |
822 | * Configure the Rx unit of the MAC after a reset. | |
823 | **/ | |
824 | ||
825 | static void | |
826 | ixgb_configure_rx(struct ixgb_adapter *adapter) | |
827 | { | |
222441a6 JP |
828 | u64 rdba = adapter->rx_ring.dma; |
829 | u32 rdlen = adapter->rx_ring.count * sizeof(struct ixgb_rx_desc); | |
1da177e4 | 830 | struct ixgb_hw *hw = &adapter->hw; |
222441a6 JP |
831 | u32 rctl; |
832 | u32 rxcsum; | |
1da177e4 LT |
833 | |
834 | /* make sure receives are disabled while setting up the descriptors */ | |
835 | ||
836 | rctl = IXGB_READ_REG(hw, RCTL); | |
837 | IXGB_WRITE_REG(hw, RCTL, rctl & ~IXGB_RCTL_RXEN); | |
838 | ||
839 | /* set the Receive Delay Timer Register */ | |
840 | ||
841 | IXGB_WRITE_REG(hw, RDTR, adapter->rx_int_delay); | |
842 | ||
843 | /* Setup the Base and Length of the Rx Descriptor Ring */ | |
844 | ||
845 | IXGB_WRITE_REG(hw, RDBAL, (rdba & 0x00000000ffffffffULL)); | |
846 | IXGB_WRITE_REG(hw, RDBAH, (rdba >> 32)); | |
847 | ||
848 | IXGB_WRITE_REG(hw, RDLEN, rdlen); | |
849 | ||
850 | /* Setup the HW Rx Head and Tail Descriptor Pointers */ | |
851 | IXGB_WRITE_REG(hw, RDH, 0); | |
852 | IXGB_WRITE_REG(hw, RDT, 0); | |
853 | ||
4360386f JB |
854 | /* due to the hardware errata with RXDCTL, we are unable to use any of |
855 | * the performance enhancing features of it without causing other | |
856 | * subtle bugs, some of the bugs could include receive length | |
857 | * corruption at high data rates (WTHRESH > 0) and/or receive | |
858 | * descriptor ring irregularites (particularly in hardware cache) */ | |
859 | IXGB_WRITE_REG(hw, RXDCTL, 0); | |
1da177e4 LT |
860 | |
861 | /* Enable Receive Checksum Offload for TCP and UDP */ | |
446490ca | 862 | if (adapter->rx_csum) { |
1da177e4 LT |
863 | rxcsum = IXGB_READ_REG(hw, RXCSUM); |
864 | rxcsum |= IXGB_RXCSUM_TUOFL; | |
865 | IXGB_WRITE_REG(hw, RXCSUM, rxcsum); | |
866 | } | |
867 | ||
868 | /* Enable Receives */ | |
869 | ||
870 | IXGB_WRITE_REG(hw, RCTL, rctl); | |
871 | } | |
872 | ||
873 | /** | |
874 | * ixgb_free_tx_resources - Free Tx Resources | |
875 | * @adapter: board private structure | |
876 | * | |
877 | * Free all transmit software resources | |
878 | **/ | |
879 | ||
880 | void | |
881 | ixgb_free_tx_resources(struct ixgb_adapter *adapter) | |
882 | { | |
883 | struct pci_dev *pdev = adapter->pdev; | |
884 | ||
885 | ixgb_clean_tx_ring(adapter); | |
886 | ||
887 | vfree(adapter->tx_ring.buffer_info); | |
888 | adapter->tx_ring.buffer_info = NULL; | |
889 | ||
890 | pci_free_consistent(pdev, adapter->tx_ring.size, | |
891 | adapter->tx_ring.desc, adapter->tx_ring.dma); | |
892 | ||
893 | adapter->tx_ring.desc = NULL; | |
894 | } | |
895 | ||
235949d1 | 896 | static void |
1da177e4 | 897 | ixgb_unmap_and_free_tx_resource(struct ixgb_adapter *adapter, |
0060c072 | 898 | struct ixgb_buffer *buffer_info) |
1da177e4 LT |
899 | { |
900 | struct pci_dev *pdev = adapter->pdev; | |
1dfdd7df AK |
901 | |
902 | if (buffer_info->dma) | |
903 | pci_unmap_page(pdev, buffer_info->dma, buffer_info->length, | |
904 | PCI_DMA_TODEVICE); | |
905 | ||
906 | if (buffer_info->skb) | |
1da177e4 | 907 | dev_kfree_skb_any(buffer_info->skb); |
1dfdd7df AK |
908 | |
909 | buffer_info->skb = NULL; | |
910 | buffer_info->dma = 0; | |
911 | buffer_info->time_stamp = 0; | |
912 | /* these fields must always be initialized in tx | |
913 | * buffer_info->length = 0; | |
914 | * buffer_info->next_to_watch = 0; */ | |
1da177e4 LT |
915 | } |
916 | ||
917 | /** | |
918 | * ixgb_clean_tx_ring - Free Tx Buffers | |
919 | * @adapter: board private structure | |
920 | **/ | |
921 | ||
922 | static void | |
923 | ixgb_clean_tx_ring(struct ixgb_adapter *adapter) | |
924 | { | |
925 | struct ixgb_desc_ring *tx_ring = &adapter->tx_ring; | |
926 | struct ixgb_buffer *buffer_info; | |
927 | unsigned long size; | |
928 | unsigned int i; | |
929 | ||
930 | /* Free all the Tx ring sk_buffs */ | |
931 | ||
1459336d | 932 | for (i = 0; i < tx_ring->count; i++) { |
1da177e4 LT |
933 | buffer_info = &tx_ring->buffer_info[i]; |
934 | ixgb_unmap_and_free_tx_resource(adapter, buffer_info); | |
935 | } | |
936 | ||
937 | size = sizeof(struct ixgb_buffer) * tx_ring->count; | |
938 | memset(tx_ring->buffer_info, 0, size); | |
939 | ||
940 | /* Zero out the descriptor ring */ | |
941 | ||
942 | memset(tx_ring->desc, 0, tx_ring->size); | |
943 | ||
944 | tx_ring->next_to_use = 0; | |
945 | tx_ring->next_to_clean = 0; | |
946 | ||
947 | IXGB_WRITE_REG(&adapter->hw, TDH, 0); | |
948 | IXGB_WRITE_REG(&adapter->hw, TDT, 0); | |
949 | } | |
950 | ||
951 | /** | |
952 | * ixgb_free_rx_resources - Free Rx Resources | |
953 | * @adapter: board private structure | |
954 | * | |
955 | * Free all receive software resources | |
956 | **/ | |
957 | ||
958 | void | |
959 | ixgb_free_rx_resources(struct ixgb_adapter *adapter) | |
960 | { | |
961 | struct ixgb_desc_ring *rx_ring = &adapter->rx_ring; | |
962 | struct pci_dev *pdev = adapter->pdev; | |
963 | ||
964 | ixgb_clean_rx_ring(adapter); | |
965 | ||
966 | vfree(rx_ring->buffer_info); | |
967 | rx_ring->buffer_info = NULL; | |
968 | ||
969 | pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma); | |
970 | ||
971 | rx_ring->desc = NULL; | |
972 | } | |
973 | ||
974 | /** | |
975 | * ixgb_clean_rx_ring - Free Rx Buffers | |
976 | * @adapter: board private structure | |
977 | **/ | |
978 | ||
979 | static void | |
980 | ixgb_clean_rx_ring(struct ixgb_adapter *adapter) | |
981 | { | |
982 | struct ixgb_desc_ring *rx_ring = &adapter->rx_ring; | |
983 | struct ixgb_buffer *buffer_info; | |
984 | struct pci_dev *pdev = adapter->pdev; | |
985 | unsigned long size; | |
986 | unsigned int i; | |
987 | ||
988 | /* Free all the Rx ring sk_buffs */ | |
989 | ||
1459336d | 990 | for (i = 0; i < rx_ring->count; i++) { |
1da177e4 | 991 | buffer_info = &rx_ring->buffer_info[i]; |
03f83041 | 992 | if (buffer_info->skb) { |
1da177e4 LT |
993 | |
994 | pci_unmap_single(pdev, | |
995 | buffer_info->dma, | |
996 | buffer_info->length, | |
997 | PCI_DMA_FROMDEVICE); | |
998 | ||
999 | dev_kfree_skb(buffer_info->skb); | |
1000 | ||
1001 | buffer_info->skb = NULL; | |
1002 | } | |
1003 | } | |
1004 | ||
1005 | size = sizeof(struct ixgb_buffer) * rx_ring->count; | |
1006 | memset(rx_ring->buffer_info, 0, size); | |
1007 | ||
1008 | /* Zero out the descriptor ring */ | |
1009 | ||
1010 | memset(rx_ring->desc, 0, rx_ring->size); | |
1011 | ||
1012 | rx_ring->next_to_clean = 0; | |
1013 | rx_ring->next_to_use = 0; | |
1014 | ||
1015 | IXGB_WRITE_REG(&adapter->hw, RDH, 0); | |
1016 | IXGB_WRITE_REG(&adapter->hw, RDT, 0); | |
1017 | } | |
1018 | ||
1019 | /** | |
1020 | * ixgb_set_mac - Change the Ethernet Address of the NIC | |
1021 | * @netdev: network interface device structure | |
1022 | * @p: pointer to an address structure | |
1023 | * | |
1024 | * Returns 0 on success, negative on failure | |
1025 | **/ | |
1026 | ||
1027 | static int | |
1028 | ixgb_set_mac(struct net_device *netdev, void *p) | |
1029 | { | |
8908c6cd | 1030 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
1031 | struct sockaddr *addr = p; |
1032 | ||
03f83041 | 1033 | if (!is_valid_ether_addr(addr->sa_data)) |
1da177e4 LT |
1034 | return -EADDRNOTAVAIL; |
1035 | ||
1036 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
1037 | ||
1038 | ixgb_rar_set(&adapter->hw, addr->sa_data, 0); | |
1039 | ||
1040 | return 0; | |
1041 | } | |
1042 | ||
1043 | /** | |
1044 | * ixgb_set_multi - Multicast and Promiscuous mode set | |
1045 | * @netdev: network interface device structure | |
1046 | * | |
1047 | * The set_multi entry point is called whenever the multicast address | |
1048 | * list or the network interface flags are updated. This routine is | |
1049 | * responsible for configuring the hardware for proper multicast, | |
1050 | * promiscuous mode, and all-multi behavior. | |
1051 | **/ | |
1052 | ||
1053 | static void | |
1054 | ixgb_set_multi(struct net_device *netdev) | |
1055 | { | |
8908c6cd | 1056 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
1057 | struct ixgb_hw *hw = &adapter->hw; |
1058 | struct dev_mc_list *mc_ptr; | |
222441a6 | 1059 | u32 rctl; |
1da177e4 LT |
1060 | int i; |
1061 | ||
1062 | /* Check for Promiscuous and All Multicast modes */ | |
1063 | ||
1064 | rctl = IXGB_READ_REG(hw, RCTL); | |
1065 | ||
03f83041 | 1066 | if (netdev->flags & IFF_PROMISC) { |
1da177e4 | 1067 | rctl |= (IXGB_RCTL_UPE | IXGB_RCTL_MPE); |
03f83041 | 1068 | } else if (netdev->flags & IFF_ALLMULTI) { |
1da177e4 LT |
1069 | rctl |= IXGB_RCTL_MPE; |
1070 | rctl &= ~IXGB_RCTL_UPE; | |
1071 | } else { | |
1072 | rctl &= ~(IXGB_RCTL_UPE | IXGB_RCTL_MPE); | |
1073 | } | |
1074 | ||
03f83041 | 1075 | if (netdev->mc_count > IXGB_MAX_NUM_MULTICAST_ADDRESSES) { |
1da177e4 LT |
1076 | rctl |= IXGB_RCTL_MPE; |
1077 | IXGB_WRITE_REG(hw, RCTL, rctl); | |
1078 | } else { | |
222441a6 | 1079 | u8 mta[IXGB_MAX_NUM_MULTICAST_ADDRESSES * |
273dc74e | 1080 | IXGB_ETH_LENGTH_OF_ADDRESS]; |
1da177e4 LT |
1081 | |
1082 | IXGB_WRITE_REG(hw, RCTL, rctl); | |
1083 | ||
0060c072 JB |
1084 | for (i = 0, mc_ptr = netdev->mc_list; |
1085 | mc_ptr; | |
1086 | i++, mc_ptr = mc_ptr->next) | |
1da177e4 | 1087 | memcpy(&mta[i * IXGB_ETH_LENGTH_OF_ADDRESS], |
0060c072 | 1088 | mc_ptr->dmi_addr, IXGB_ETH_LENGTH_OF_ADDRESS); |
1da177e4 LT |
1089 | |
1090 | ixgb_mc_addr_list_update(hw, mta, netdev->mc_count, 0); | |
1091 | } | |
1092 | } | |
1093 | ||
1094 | /** | |
1095 | * ixgb_watchdog - Timer Call-back | |
1096 | * @data: pointer to netdev cast into an unsigned long | |
1097 | **/ | |
1098 | ||
1099 | static void | |
1100 | ixgb_watchdog(unsigned long data) | |
1101 | { | |
1102 | struct ixgb_adapter *adapter = (struct ixgb_adapter *)data; | |
1103 | struct net_device *netdev = adapter->netdev; | |
1104 | struct ixgb_desc_ring *txdr = &adapter->tx_ring; | |
1105 | ||
1106 | ixgb_check_for_link(&adapter->hw); | |
1107 | ||
1108 | if (ixgb_check_for_bad_link(&adapter->hw)) { | |
1109 | /* force the reset path */ | |
1110 | netif_stop_queue(netdev); | |
1111 | } | |
1112 | ||
03f83041 JB |
1113 | if (adapter->hw.link_up) { |
1114 | if (!netif_carrier_ok(netdev)) { | |
ec9c3f5d AK |
1115 | DPRINTK(LINK, INFO, |
1116 | "NIC Link is Up 10000 Mbps Full Duplex\n"); | |
1da177e4 LT |
1117 | adapter->link_speed = 10000; |
1118 | adapter->link_duplex = FULL_DUPLEX; | |
1119 | netif_carrier_on(netdev); | |
1120 | netif_wake_queue(netdev); | |
1121 | } | |
1122 | } else { | |
03f83041 | 1123 | if (netif_carrier_ok(netdev)) { |
1da177e4 LT |
1124 | adapter->link_speed = 0; |
1125 | adapter->link_duplex = 0; | |
ec9c3f5d | 1126 | DPRINTK(LINK, INFO, "NIC Link is Down\n"); |
1da177e4 LT |
1127 | netif_carrier_off(netdev); |
1128 | netif_stop_queue(netdev); | |
1129 | ||
1130 | } | |
1131 | } | |
1132 | ||
1133 | ixgb_update_stats(adapter); | |
1134 | ||
03f83041 JB |
1135 | if (!netif_carrier_ok(netdev)) { |
1136 | if (IXGB_DESC_UNUSED(txdr) + 1 < txdr->count) { | |
1da177e4 LT |
1137 | /* We've lost link, so the controller stops DMA, |
1138 | * but we've got queued Tx work that's never going | |
1139 | * to get done, so reset controller to flush Tx. | |
1140 | * (Do the reset outside of interrupt context). */ | |
1141 | schedule_work(&adapter->tx_timeout_task); | |
1142 | } | |
1143 | } | |
1144 | ||
1145 | /* Force detection of hung controller every watchdog period */ | |
446490ca | 1146 | adapter->detect_tx_hung = true; |
1da177e4 LT |
1147 | |
1148 | /* generate an interrupt to force clean up of any stragglers */ | |
1149 | IXGB_WRITE_REG(&adapter->hw, ICS, IXGB_INT_TXDW); | |
1150 | ||
1151 | /* Reset the timer */ | |
1152 | mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ); | |
1153 | } | |
1154 | ||
1155 | #define IXGB_TX_FLAGS_CSUM 0x00000001 | |
1156 | #define IXGB_TX_FLAGS_VLAN 0x00000002 | |
1157 | #define IXGB_TX_FLAGS_TSO 0x00000004 | |
1158 | ||
235949d1 | 1159 | static int |
1da177e4 LT |
1160 | ixgb_tso(struct ixgb_adapter *adapter, struct sk_buff *skb) |
1161 | { | |
1da177e4 LT |
1162 | struct ixgb_context_desc *context_desc; |
1163 | unsigned int i; | |
222441a6 JP |
1164 | u8 ipcss, ipcso, tucss, tucso, hdr_len; |
1165 | u16 ipcse, tucse, mss; | |
1da177e4 LT |
1166 | int err; |
1167 | ||
89114afd | 1168 | if (likely(skb_is_gso(skb))) { |
adc54139 | 1169 | struct ixgb_buffer *buffer_info; |
eddc9ec5 ACM |
1170 | struct iphdr *iph; |
1171 | ||
1da177e4 LT |
1172 | if (skb_header_cloned(skb)) { |
1173 | err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); | |
1174 | if (err) | |
1175 | return err; | |
1176 | } | |
1177 | ||
ab6a5bb6 | 1178 | hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
7967168c | 1179 | mss = skb_shinfo(skb)->gso_size; |
eddc9ec5 ACM |
1180 | iph = ip_hdr(skb); |
1181 | iph->tot_len = 0; | |
1182 | iph->check = 0; | |
aa8223c7 ACM |
1183 | tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, |
1184 | iph->daddr, 0, | |
1185 | IPPROTO_TCP, 0); | |
bbe735e4 | 1186 | ipcss = skb_network_offset(skb); |
eddc9ec5 | 1187 | ipcso = (void *)&(iph->check) - (void *)skb->data; |
ea2ae17d ACM |
1188 | ipcse = skb_transport_offset(skb) - 1; |
1189 | tucss = skb_transport_offset(skb); | |
aa8223c7 | 1190 | tucso = (void *)&(tcp_hdr(skb)->check) - (void *)skb->data; |
1da177e4 LT |
1191 | tucse = 0; |
1192 | ||
1193 | i = adapter->tx_ring.next_to_use; | |
1194 | context_desc = IXGB_CONTEXT_DESC(adapter->tx_ring, i); | |
adc54139 JB |
1195 | buffer_info = &adapter->tx_ring.buffer_info[i]; |
1196 | WARN_ON(buffer_info->dma != 0); | |
1da177e4 LT |
1197 | |
1198 | context_desc->ipcss = ipcss; | |
1199 | context_desc->ipcso = ipcso; | |
1200 | context_desc->ipcse = cpu_to_le16(ipcse); | |
1201 | context_desc->tucss = tucss; | |
1202 | context_desc->tucso = tucso; | |
1203 | context_desc->tucse = cpu_to_le16(tucse); | |
1204 | context_desc->mss = cpu_to_le16(mss); | |
1205 | context_desc->hdr_len = hdr_len; | |
1206 | context_desc->status = 0; | |
1207 | context_desc->cmd_type_len = cpu_to_le32( | |
0060c072 | 1208 | IXGB_CONTEXT_DESC_TYPE |
1da177e4 LT |
1209 | | IXGB_CONTEXT_DESC_CMD_TSE |
1210 | | IXGB_CONTEXT_DESC_CMD_IP | |
1211 | | IXGB_CONTEXT_DESC_CMD_TCP | |
1da177e4 LT |
1212 | | IXGB_CONTEXT_DESC_CMD_IDE |
1213 | | (skb->len - (hdr_len))); | |
1214 | ||
06c2f9ec | 1215 | |
03f83041 | 1216 | if (++i == adapter->tx_ring.count) i = 0; |
1da177e4 LT |
1217 | adapter->tx_ring.next_to_use = i; |
1218 | ||
1219 | return 1; | |
1220 | } | |
1da177e4 LT |
1221 | |
1222 | return 0; | |
1223 | } | |
1224 | ||
446490ca | 1225 | static bool |
1da177e4 LT |
1226 | ixgb_tx_csum(struct ixgb_adapter *adapter, struct sk_buff *skb) |
1227 | { | |
1228 | struct ixgb_context_desc *context_desc; | |
1229 | unsigned int i; | |
222441a6 | 1230 | u8 css, cso; |
1da177e4 | 1231 | |
03f83041 | 1232 | if (likely(skb->ip_summed == CHECKSUM_PARTIAL)) { |
adc54139 | 1233 | struct ixgb_buffer *buffer_info; |
ea2ae17d | 1234 | css = skb_transport_offset(skb); |
ff1dcadb | 1235 | cso = css + skb->csum_offset; |
1da177e4 LT |
1236 | |
1237 | i = adapter->tx_ring.next_to_use; | |
1238 | context_desc = IXGB_CONTEXT_DESC(adapter->tx_ring, i); | |
adc54139 JB |
1239 | buffer_info = &adapter->tx_ring.buffer_info[i]; |
1240 | WARN_ON(buffer_info->dma != 0); | |
1da177e4 LT |
1241 | |
1242 | context_desc->tucss = css; | |
1243 | context_desc->tucso = cso; | |
1244 | context_desc->tucse = 0; | |
1245 | /* zero out any previously existing data in one instruction */ | |
222441a6 | 1246 | *(u32 *)&(context_desc->ipcss) = 0; |
1da177e4 LT |
1247 | context_desc->status = 0; |
1248 | context_desc->hdr_len = 0; | |
1249 | context_desc->mss = 0; | |
1250 | context_desc->cmd_type_len = | |
1251 | cpu_to_le32(IXGB_CONTEXT_DESC_TYPE | |
06c2f9ec | 1252 | | IXGB_TX_DESC_CMD_IDE); |
1da177e4 | 1253 | |
03f83041 | 1254 | if (++i == adapter->tx_ring.count) i = 0; |
1da177e4 LT |
1255 | adapter->tx_ring.next_to_use = i; |
1256 | ||
446490ca | 1257 | return true; |
1da177e4 LT |
1258 | } |
1259 | ||
446490ca | 1260 | return false; |
1da177e4 LT |
1261 | } |
1262 | ||
1263 | #define IXGB_MAX_TXD_PWR 14 | |
1264 | #define IXGB_MAX_DATA_PER_TXD (1<<IXGB_MAX_TXD_PWR) | |
1265 | ||
235949d1 | 1266 | static int |
1da177e4 LT |
1267 | ixgb_tx_map(struct ixgb_adapter *adapter, struct sk_buff *skb, |
1268 | unsigned int first) | |
1269 | { | |
1270 | struct ixgb_desc_ring *tx_ring = &adapter->tx_ring; | |
1271 | struct ixgb_buffer *buffer_info; | |
1272 | int len = skb->len; | |
1273 | unsigned int offset = 0, size, count = 0, i; | |
5d927853 | 1274 | unsigned int mss = skb_shinfo(skb)->gso_size; |
1da177e4 LT |
1275 | |
1276 | unsigned int nr_frags = skb_shinfo(skb)->nr_frags; | |
1277 | unsigned int f; | |
ac79c82e | 1278 | |
1da177e4 LT |
1279 | len -= skb->data_len; |
1280 | ||
1281 | i = tx_ring->next_to_use; | |
1282 | ||
9a432992 | 1283 | while (len) { |
1da177e4 | 1284 | buffer_info = &tx_ring->buffer_info[i]; |
709cf018 | 1285 | size = min(len, IXGB_MAX_DATA_PER_TXD); |
5d927853 JB |
1286 | /* Workaround for premature desc write-backs |
1287 | * in TSO mode. Append 4-byte sentinel desc */ | |
1288 | if (unlikely(mss && !nr_frags && size == len && size > 8)) | |
1289 | size -= 4; | |
1290 | ||
1da177e4 | 1291 | buffer_info->length = size; |
adc54139 | 1292 | WARN_ON(buffer_info->dma != 0); |
34336635 | 1293 | buffer_info->time_stamp = jiffies; |
1da177e4 LT |
1294 | buffer_info->dma = |
1295 | pci_map_single(adapter->pdev, | |
1296 | skb->data + offset, | |
1297 | size, | |
1298 | PCI_DMA_TODEVICE); | |
1dfdd7df | 1299 | buffer_info->next_to_watch = 0; |
1da177e4 LT |
1300 | |
1301 | len -= size; | |
1302 | offset += size; | |
1303 | count++; | |
03f83041 | 1304 | if (++i == tx_ring->count) i = 0; |
1da177e4 LT |
1305 | } |
1306 | ||
1459336d | 1307 | for (f = 0; f < nr_frags; f++) { |
1da177e4 LT |
1308 | struct skb_frag_struct *frag; |
1309 | ||
1310 | frag = &skb_shinfo(skb)->frags[f]; | |
1311 | len = frag->size; | |
1312 | offset = 0; | |
1313 | ||
9a432992 | 1314 | while (len) { |
1da177e4 | 1315 | buffer_info = &tx_ring->buffer_info[i]; |
709cf018 | 1316 | size = min(len, IXGB_MAX_DATA_PER_TXD); |
5d927853 JB |
1317 | |
1318 | /* Workaround for premature desc write-backs | |
1319 | * in TSO mode. Append 4-byte sentinel desc */ | |
19abe86d AK |
1320 | if (unlikely(mss && (f == (nr_frags - 1)) |
1321 | && size == len && size > 8)) | |
5d927853 JB |
1322 | size -= 4; |
1323 | ||
1da177e4 | 1324 | buffer_info->length = size; |
34336635 | 1325 | buffer_info->time_stamp = jiffies; |
1da177e4 LT |
1326 | buffer_info->dma = |
1327 | pci_map_page(adapter->pdev, | |
1328 | frag->page, | |
1329 | frag->page_offset + offset, | |
1330 | size, | |
1331 | PCI_DMA_TODEVICE); | |
1dfdd7df | 1332 | buffer_info->next_to_watch = 0; |
1da177e4 LT |
1333 | |
1334 | len -= size; | |
1335 | offset += size; | |
1336 | count++; | |
03f83041 | 1337 | if (++i == tx_ring->count) i = 0; |
1da177e4 LT |
1338 | } |
1339 | } | |
1340 | i = (i == 0) ? tx_ring->count - 1 : i - 1; | |
1341 | tx_ring->buffer_info[i].skb = skb; | |
1342 | tx_ring->buffer_info[first].next_to_watch = i; | |
1343 | ||
1344 | return count; | |
1345 | } | |
1346 | ||
235949d1 | 1347 | static void |
1da177e4 LT |
1348 | ixgb_tx_queue(struct ixgb_adapter *adapter, int count, int vlan_id,int tx_flags) |
1349 | { | |
1350 | struct ixgb_desc_ring *tx_ring = &adapter->tx_ring; | |
1351 | struct ixgb_tx_desc *tx_desc = NULL; | |
1352 | struct ixgb_buffer *buffer_info; | |
222441a6 JP |
1353 | u32 cmd_type_len = adapter->tx_cmd_type; |
1354 | u8 status = 0; | |
1355 | u8 popts = 0; | |
1da177e4 LT |
1356 | unsigned int i; |
1357 | ||
03f83041 | 1358 | if (tx_flags & IXGB_TX_FLAGS_TSO) { |
1da177e4 LT |
1359 | cmd_type_len |= IXGB_TX_DESC_CMD_TSE; |
1360 | popts |= (IXGB_TX_DESC_POPTS_IXSM | IXGB_TX_DESC_POPTS_TXSM); | |
1361 | } | |
1362 | ||
03f83041 | 1363 | if (tx_flags & IXGB_TX_FLAGS_CSUM) |
1da177e4 LT |
1364 | popts |= IXGB_TX_DESC_POPTS_TXSM; |
1365 | ||
03f83041 | 1366 | if (tx_flags & IXGB_TX_FLAGS_VLAN) |
1da177e4 | 1367 | cmd_type_len |= IXGB_TX_DESC_CMD_VLE; |
1da177e4 LT |
1368 | |
1369 | i = tx_ring->next_to_use; | |
1370 | ||
9a432992 | 1371 | while (count--) { |
1da177e4 LT |
1372 | buffer_info = &tx_ring->buffer_info[i]; |
1373 | tx_desc = IXGB_TX_DESC(*tx_ring, i); | |
1374 | tx_desc->buff_addr = cpu_to_le64(buffer_info->dma); | |
1375 | tx_desc->cmd_type_len = | |
1376 | cpu_to_le32(cmd_type_len | buffer_info->length); | |
1377 | tx_desc->status = status; | |
1378 | tx_desc->popts = popts; | |
1379 | tx_desc->vlan = cpu_to_le16(vlan_id); | |
1380 | ||
03f83041 | 1381 | if (++i == tx_ring->count) i = 0; |
1da177e4 LT |
1382 | } |
1383 | ||
0060c072 JB |
1384 | tx_desc->cmd_type_len |= |
1385 | cpu_to_le32(IXGB_TX_DESC_CMD_EOP | IXGB_TX_DESC_CMD_RS); | |
1da177e4 LT |
1386 | |
1387 | /* Force memory writes to complete before letting h/w | |
1388 | * know there are new descriptors to fetch. (Only | |
1389 | * applicable for weak-ordered memory model archs, | |
1390 | * such as IA-64). */ | |
1391 | wmb(); | |
1392 | ||
1393 | tx_ring->next_to_use = i; | |
1394 | IXGB_WRITE_REG(&adapter->hw, TDT, i); | |
1395 | } | |
1396 | ||
dfd341e4 JB |
1397 | static int __ixgb_maybe_stop_tx(struct net_device *netdev, int size) |
1398 | { | |
1399 | struct ixgb_adapter *adapter = netdev_priv(netdev); | |
1400 | struct ixgb_desc_ring *tx_ring = &adapter->tx_ring; | |
1401 | ||
1402 | netif_stop_queue(netdev); | |
1403 | /* Herbert's original patch had: | |
1404 | * smp_mb__after_netif_stop_queue(); | |
1405 | * but since that doesn't exist yet, just open code it. */ | |
1406 | smp_mb(); | |
1407 | ||
1408 | /* We need to check again in a case another CPU has just | |
1409 | * made room available. */ | |
1410 | if (likely(IXGB_DESC_UNUSED(tx_ring) < size)) | |
1411 | return -EBUSY; | |
1412 | ||
1413 | /* A reprieve! */ | |
1414 | netif_start_queue(netdev); | |
1415 | ++adapter->restart_queue; | |
1416 | return 0; | |
1417 | } | |
1418 | ||
1419 | static int ixgb_maybe_stop_tx(struct net_device *netdev, | |
1420 | struct ixgb_desc_ring *tx_ring, int size) | |
1421 | { | |
1422 | if (likely(IXGB_DESC_UNUSED(tx_ring) >= size)) | |
1423 | return 0; | |
1424 | return __ixgb_maybe_stop_tx(netdev, size); | |
1425 | } | |
1426 | ||
1427 | ||
1da177e4 LT |
1428 | /* Tx Descriptors needed, worst case */ |
1429 | #define TXD_USE_COUNT(S) (((S) >> IXGB_MAX_TXD_PWR) + \ | |
1430 | (((S) & (IXGB_MAX_DATA_PER_TXD - 1)) ? 1 : 0)) | |
5d927853 JB |
1431 | #define DESC_NEEDED TXD_USE_COUNT(IXGB_MAX_DATA_PER_TXD) /* skb->date */ + \ |
1432 | MAX_SKB_FRAGS * TXD_USE_COUNT(PAGE_SIZE) + 1 /* for context */ \ | |
1433 | + 1 /* one more needed for sentinel TSO workaround */ | |
1da177e4 LT |
1434 | |
1435 | static int | |
1436 | ixgb_xmit_frame(struct sk_buff *skb, struct net_device *netdev) | |
1437 | { | |
8908c6cd | 1438 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
1439 | unsigned int first; |
1440 | unsigned int tx_flags = 0; | |
1da177e4 LT |
1441 | int vlan_id = 0; |
1442 | int tso; | |
1443 | ||
bab2bce7 JB |
1444 | if (test_bit(__IXGB_DOWN, &adapter->flags)) { |
1445 | dev_kfree_skb(skb); | |
1446 | return NETDEV_TX_OK; | |
1447 | } | |
1448 | ||
03f83041 | 1449 | if (skb->len <= 0) { |
1da177e4 LT |
1450 | dev_kfree_skb_any(skb); |
1451 | return 0; | |
1452 | } | |
1453 | ||
dfd341e4 | 1454 | if (unlikely(ixgb_maybe_stop_tx(netdev, &adapter->tx_ring, |
db582944 | 1455 | DESC_NEEDED))) |
f017f14b | 1456 | return NETDEV_TX_BUSY; |
1da177e4 | 1457 | |
03f83041 | 1458 | if (adapter->vlgrp && vlan_tx_tag_present(skb)) { |
1da177e4 LT |
1459 | tx_flags |= IXGB_TX_FLAGS_VLAN; |
1460 | vlan_id = vlan_tx_tag_get(skb); | |
1461 | } | |
1462 | ||
1463 | first = adapter->tx_ring.next_to_use; | |
0060c072 | 1464 | |
1da177e4 LT |
1465 | tso = ixgb_tso(adapter, skb); |
1466 | if (tso < 0) { | |
1467 | dev_kfree_skb_any(skb); | |
1468 | return NETDEV_TX_OK; | |
1469 | } | |
1470 | ||
96f9c2e2 | 1471 | if (likely(tso)) |
1da177e4 | 1472 | tx_flags |= IXGB_TX_FLAGS_TSO; |
03f83041 | 1473 | else if (ixgb_tx_csum(adapter, skb)) |
1da177e4 LT |
1474 | tx_flags |= IXGB_TX_FLAGS_CSUM; |
1475 | ||
1476 | ixgb_tx_queue(adapter, ixgb_tx_map(adapter, skb, first), vlan_id, | |
1477 | tx_flags); | |
1478 | ||
1479 | netdev->trans_start = jiffies; | |
1480 | ||
f017f14b | 1481 | /* Make sure there is space in the ring for the next send. */ |
dfd341e4 | 1482 | ixgb_maybe_stop_tx(netdev, &adapter->tx_ring, DESC_NEEDED); |
f017f14b | 1483 | |
f017f14b | 1484 | return NETDEV_TX_OK; |
1da177e4 LT |
1485 | } |
1486 | ||
1487 | /** | |
1488 | * ixgb_tx_timeout - Respond to a Tx Hang | |
1489 | * @netdev: network interface device structure | |
1490 | **/ | |
1491 | ||
1492 | static void | |
1493 | ixgb_tx_timeout(struct net_device *netdev) | |
1494 | { | |
8908c6cd | 1495 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
1496 | |
1497 | /* Do the reset outside of interrupt context */ | |
1498 | schedule_work(&adapter->tx_timeout_task); | |
1499 | } | |
1500 | ||
1501 | static void | |
c4028958 | 1502 | ixgb_tx_timeout_task(struct work_struct *work) |
1da177e4 | 1503 | { |
c4028958 DH |
1504 | struct ixgb_adapter *adapter = |
1505 | container_of(work, struct ixgb_adapter, tx_timeout_task); | |
1da177e4 | 1506 | |
9b8118df | 1507 | adapter->tx_timeout_count++; |
446490ca | 1508 | ixgb_down(adapter, true); |
1da177e4 LT |
1509 | ixgb_up(adapter); |
1510 | } | |
1511 | ||
1512 | /** | |
1513 | * ixgb_get_stats - Get System Network Statistics | |
1514 | * @netdev: network interface device structure | |
1515 | * | |
1516 | * Returns the address of the device statistics structure. | |
1517 | * The statistics are actually updated from the timer callback. | |
1518 | **/ | |
1519 | ||
1520 | static struct net_device_stats * | |
1521 | ixgb_get_stats(struct net_device *netdev) | |
1522 | { | |
8908c6cd | 1523 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
1524 | |
1525 | return &adapter->net_stats; | |
1526 | } | |
1527 | ||
1528 | /** | |
1529 | * ixgb_change_mtu - Change the Maximum Transfer Unit | |
1530 | * @netdev: network interface device structure | |
1531 | * @new_mtu: new value for maximum frame size | |
1532 | * | |
1533 | * Returns 0 on success, negative on failure | |
1534 | **/ | |
1535 | ||
1536 | static int | |
1537 | ixgb_change_mtu(struct net_device *netdev, int new_mtu) | |
1538 | { | |
8908c6cd | 1539 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
1540 | int max_frame = new_mtu + ENET_HEADER_SIZE + ENET_FCS_LENGTH; |
1541 | int old_max_frame = netdev->mtu + ENET_HEADER_SIZE + ENET_FCS_LENGTH; | |
1542 | ||
a65a604a JB |
1543 | /* MTU < 68 is an error for IPv4 traffic, just don't allow it */ |
1544 | if ((new_mtu < 68) || | |
1545 | (max_frame > IXGB_MAX_JUMBO_FRAME_SIZE + ENET_FCS_LENGTH)) { | |
ec9c3f5d | 1546 | DPRINTK(PROBE, ERR, "Invalid MTU setting %d\n", new_mtu); |
1da177e4 LT |
1547 | return -EINVAL; |
1548 | } | |
1549 | ||
b5ca88eb JB |
1550 | if (old_max_frame == max_frame) |
1551 | return 0; | |
1552 | ||
1553 | if (netif_running(netdev)) | |
1554 | ixgb_down(adapter, true); | |
1555 | ||
a3dc3da0 | 1556 | adapter->rx_buffer_len = max_frame + 8; /* + 8 for errata */ |
1da177e4 LT |
1557 | |
1558 | netdev->mtu = new_mtu; | |
1559 | ||
b5ca88eb | 1560 | if (netif_running(netdev)) |
1da177e4 | 1561 | ixgb_up(adapter); |
1da177e4 LT |
1562 | |
1563 | return 0; | |
1564 | } | |
1565 | ||
1566 | /** | |
1567 | * ixgb_update_stats - Update the board statistics counters. | |
1568 | * @adapter: board private structure | |
1569 | **/ | |
1570 | ||
1571 | void | |
1572 | ixgb_update_stats(struct ixgb_adapter *adapter) | |
1573 | { | |
5633684d | 1574 | struct net_device *netdev = adapter->netdev; |
01748fbb LV |
1575 | struct pci_dev *pdev = adapter->pdev; |
1576 | ||
1577 | /* Prevent stats update while adapter is being reset */ | |
81b1955e | 1578 | if (pci_channel_offline(pdev)) |
01748fbb | 1579 | return; |
5633684d | 1580 | |
03f83041 | 1581 | if ((netdev->flags & IFF_PROMISC) || (netdev->flags & IFF_ALLMULTI) || |
5633684d MC |
1582 | (netdev->mc_count > IXGB_MAX_NUM_MULTICAST_ADDRESSES)) { |
1583 | u64 multi = IXGB_READ_REG(&adapter->hw, MPRCL); | |
1584 | u32 bcast_l = IXGB_READ_REG(&adapter->hw, BPRCL); | |
1585 | u32 bcast_h = IXGB_READ_REG(&adapter->hw, BPRCH); | |
0060c072 | 1586 | u64 bcast = ((u64)bcast_h << 32) | bcast_l; |
5633684d MC |
1587 | |
1588 | multi |= ((u64)IXGB_READ_REG(&adapter->hw, MPRCH) << 32); | |
1589 | /* fix up multicast stats by removing broadcasts */ | |
03f83041 | 1590 | if (multi >= bcast) |
7b89178d | 1591 | multi -= bcast; |
0060c072 | 1592 | |
5633684d MC |
1593 | adapter->stats.mprcl += (multi & 0xFFFFFFFF); |
1594 | adapter->stats.mprch += (multi >> 32); | |
0060c072 | 1595 | adapter->stats.bprcl += bcast_l; |
5633684d MC |
1596 | adapter->stats.bprch += bcast_h; |
1597 | } else { | |
1598 | adapter->stats.mprcl += IXGB_READ_REG(&adapter->hw, MPRCL); | |
1599 | adapter->stats.mprch += IXGB_READ_REG(&adapter->hw, MPRCH); | |
1600 | adapter->stats.bprcl += IXGB_READ_REG(&adapter->hw, BPRCL); | |
1601 | adapter->stats.bprch += IXGB_READ_REG(&adapter->hw, BPRCH); | |
1602 | } | |
1da177e4 LT |
1603 | adapter->stats.tprl += IXGB_READ_REG(&adapter->hw, TPRL); |
1604 | adapter->stats.tprh += IXGB_READ_REG(&adapter->hw, TPRH); | |
1605 | adapter->stats.gprcl += IXGB_READ_REG(&adapter->hw, GPRCL); | |
1606 | adapter->stats.gprch += IXGB_READ_REG(&adapter->hw, GPRCH); | |
1da177e4 LT |
1607 | adapter->stats.uprcl += IXGB_READ_REG(&adapter->hw, UPRCL); |
1608 | adapter->stats.uprch += IXGB_READ_REG(&adapter->hw, UPRCH); | |
1609 | adapter->stats.vprcl += IXGB_READ_REG(&adapter->hw, VPRCL); | |
1610 | adapter->stats.vprch += IXGB_READ_REG(&adapter->hw, VPRCH); | |
1611 | adapter->stats.jprcl += IXGB_READ_REG(&adapter->hw, JPRCL); | |
1612 | adapter->stats.jprch += IXGB_READ_REG(&adapter->hw, JPRCH); | |
1613 | adapter->stats.gorcl += IXGB_READ_REG(&adapter->hw, GORCL); | |
1614 | adapter->stats.gorch += IXGB_READ_REG(&adapter->hw, GORCH); | |
1615 | adapter->stats.torl += IXGB_READ_REG(&adapter->hw, TORL); | |
1616 | adapter->stats.torh += IXGB_READ_REG(&adapter->hw, TORH); | |
1617 | adapter->stats.rnbc += IXGB_READ_REG(&adapter->hw, RNBC); | |
1618 | adapter->stats.ruc += IXGB_READ_REG(&adapter->hw, RUC); | |
1619 | adapter->stats.roc += IXGB_READ_REG(&adapter->hw, ROC); | |
1620 | adapter->stats.rlec += IXGB_READ_REG(&adapter->hw, RLEC); | |
1621 | adapter->stats.crcerrs += IXGB_READ_REG(&adapter->hw, CRCERRS); | |
1622 | adapter->stats.icbc += IXGB_READ_REG(&adapter->hw, ICBC); | |
1623 | adapter->stats.ecbc += IXGB_READ_REG(&adapter->hw, ECBC); | |
1624 | adapter->stats.mpc += IXGB_READ_REG(&adapter->hw, MPC); | |
1625 | adapter->stats.tptl += IXGB_READ_REG(&adapter->hw, TPTL); | |
1626 | adapter->stats.tpth += IXGB_READ_REG(&adapter->hw, TPTH); | |
1627 | adapter->stats.gptcl += IXGB_READ_REG(&adapter->hw, GPTCL); | |
1628 | adapter->stats.gptch += IXGB_READ_REG(&adapter->hw, GPTCH); | |
1629 | adapter->stats.bptcl += IXGB_READ_REG(&adapter->hw, BPTCL); | |
1630 | adapter->stats.bptch += IXGB_READ_REG(&adapter->hw, BPTCH); | |
1631 | adapter->stats.mptcl += IXGB_READ_REG(&adapter->hw, MPTCL); | |
1632 | adapter->stats.mptch += IXGB_READ_REG(&adapter->hw, MPTCH); | |
1633 | adapter->stats.uptcl += IXGB_READ_REG(&adapter->hw, UPTCL); | |
1634 | adapter->stats.uptch += IXGB_READ_REG(&adapter->hw, UPTCH); | |
1635 | adapter->stats.vptcl += IXGB_READ_REG(&adapter->hw, VPTCL); | |
1636 | adapter->stats.vptch += IXGB_READ_REG(&adapter->hw, VPTCH); | |
1637 | adapter->stats.jptcl += IXGB_READ_REG(&adapter->hw, JPTCL); | |
1638 | adapter->stats.jptch += IXGB_READ_REG(&adapter->hw, JPTCH); | |
1639 | adapter->stats.gotcl += IXGB_READ_REG(&adapter->hw, GOTCL); | |
1640 | adapter->stats.gotch += IXGB_READ_REG(&adapter->hw, GOTCH); | |
1641 | adapter->stats.totl += IXGB_READ_REG(&adapter->hw, TOTL); | |
1642 | adapter->stats.toth += IXGB_READ_REG(&adapter->hw, TOTH); | |
1643 | adapter->stats.dc += IXGB_READ_REG(&adapter->hw, DC); | |
1644 | adapter->stats.plt64c += IXGB_READ_REG(&adapter->hw, PLT64C); | |
1645 | adapter->stats.tsctc += IXGB_READ_REG(&adapter->hw, TSCTC); | |
1646 | adapter->stats.tsctfc += IXGB_READ_REG(&adapter->hw, TSCTFC); | |
1647 | adapter->stats.ibic += IXGB_READ_REG(&adapter->hw, IBIC); | |
1648 | adapter->stats.rfc += IXGB_READ_REG(&adapter->hw, RFC); | |
1649 | adapter->stats.lfc += IXGB_READ_REG(&adapter->hw, LFC); | |
1650 | adapter->stats.pfrc += IXGB_READ_REG(&adapter->hw, PFRC); | |
1651 | adapter->stats.pftc += IXGB_READ_REG(&adapter->hw, PFTC); | |
1652 | adapter->stats.mcfrc += IXGB_READ_REG(&adapter->hw, MCFRC); | |
1653 | adapter->stats.mcftc += IXGB_READ_REG(&adapter->hw, MCFTC); | |
1654 | adapter->stats.xonrxc += IXGB_READ_REG(&adapter->hw, XONRXC); | |
1655 | adapter->stats.xontxc += IXGB_READ_REG(&adapter->hw, XONTXC); | |
1656 | adapter->stats.xoffrxc += IXGB_READ_REG(&adapter->hw, XOFFRXC); | |
1657 | adapter->stats.xofftxc += IXGB_READ_REG(&adapter->hw, XOFFTXC); | |
1658 | adapter->stats.rjc += IXGB_READ_REG(&adapter->hw, RJC); | |
1659 | ||
1660 | /* Fill out the OS statistics structure */ | |
1661 | ||
1662 | adapter->net_stats.rx_packets = adapter->stats.gprcl; | |
1663 | adapter->net_stats.tx_packets = adapter->stats.gptcl; | |
1664 | adapter->net_stats.rx_bytes = adapter->stats.gorcl; | |
1665 | adapter->net_stats.tx_bytes = adapter->stats.gotcl; | |
1666 | adapter->net_stats.multicast = adapter->stats.mprcl; | |
1667 | adapter->net_stats.collisions = 0; | |
1668 | ||
1669 | /* ignore RLEC as it reports errors for padded (<64bytes) frames | |
1670 | * with a length in the type/len field */ | |
1671 | adapter->net_stats.rx_errors = | |
1672 | /* adapter->stats.rnbc + */ adapter->stats.crcerrs + | |
1673 | adapter->stats.ruc + | |
1674 | adapter->stats.roc /*+ adapter->stats.rlec */ + | |
1675 | adapter->stats.icbc + | |
1676 | adapter->stats.ecbc + adapter->stats.mpc; | |
1677 | ||
1da177e4 LT |
1678 | /* see above |
1679 | * adapter->net_stats.rx_length_errors = adapter->stats.rlec; | |
1680 | */ | |
1681 | ||
1682 | adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs; | |
1683 | adapter->net_stats.rx_fifo_errors = adapter->stats.mpc; | |
1684 | adapter->net_stats.rx_missed_errors = adapter->stats.mpc; | |
1685 | adapter->net_stats.rx_over_errors = adapter->stats.mpc; | |
1686 | ||
1687 | adapter->net_stats.tx_errors = 0; | |
1688 | adapter->net_stats.rx_frame_errors = 0; | |
1689 | adapter->net_stats.tx_aborted_errors = 0; | |
1690 | adapter->net_stats.tx_carrier_errors = 0; | |
1691 | adapter->net_stats.tx_fifo_errors = 0; | |
1692 | adapter->net_stats.tx_heartbeat_errors = 0; | |
1693 | adapter->net_stats.tx_window_errors = 0; | |
1694 | } | |
1695 | ||
1696 | #define IXGB_MAX_INTR 10 | |
1697 | /** | |
1698 | * ixgb_intr - Interrupt Handler | |
1699 | * @irq: interrupt number | |
1700 | * @data: pointer to a network interface device structure | |
1da177e4 LT |
1701 | **/ |
1702 | ||
1703 | static irqreturn_t | |
7d12e780 | 1704 | ixgb_intr(int irq, void *data) |
1da177e4 LT |
1705 | { |
1706 | struct net_device *netdev = data; | |
8908c6cd | 1707 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
1da177e4 | 1708 | struct ixgb_hw *hw = &adapter->hw; |
222441a6 | 1709 | u32 icr = IXGB_READ_REG(hw, ICR); |
1da177e4 LT |
1710 | #ifndef CONFIG_IXGB_NAPI |
1711 | unsigned int i; | |
1712 | #endif | |
1713 | ||
03f83041 | 1714 | if (unlikely(!icr)) |
1da177e4 LT |
1715 | return IRQ_NONE; /* Not our interrupt */ |
1716 | ||
bab2bce7 JB |
1717 | if (unlikely(icr & (IXGB_INT_RXSEQ | IXGB_INT_LSC))) |
1718 | if (!test_bit(__IXGB_DOWN, &adapter->flags)) | |
1719 | mod_timer(&adapter->watchdog_timer, jiffies); | |
1da177e4 LT |
1720 | |
1721 | #ifdef CONFIG_IXGB_NAPI | |
bea3348e | 1722 | if (netif_rx_schedule_prep(netdev, &adapter->napi)) { |
1da177e4 | 1723 | |
0060c072 | 1724 | /* Disable interrupts and register for poll. The flush |
1da177e4 LT |
1725 | of the posted write is intentionally left out. |
1726 | */ | |
1727 | ||
1da177e4 | 1728 | IXGB_WRITE_REG(&adapter->hw, IMC, ~0); |
bea3348e | 1729 | __netif_rx_schedule(netdev, &adapter->napi); |
1da177e4 LT |
1730 | } |
1731 | #else | |
1732 | /* yes, that is actually a & and it is meant to make sure that | |
1733 | * every pass through this for loop checks both receive and | |
1734 | * transmit queues for completed descriptors, intended to | |
1735 | * avoid starvation issues and assist tx/rx fairness. */ | |
1459336d | 1736 | for (i = 0; i < IXGB_MAX_INTR; i++) |
03f83041 | 1737 | if (!ixgb_clean_rx_irq(adapter) & |
1da177e4 LT |
1738 | !ixgb_clean_tx_irq(adapter)) |
1739 | break; | |
0060c072 | 1740 | #endif |
1da177e4 LT |
1741 | return IRQ_HANDLED; |
1742 | } | |
1743 | ||
1744 | #ifdef CONFIG_IXGB_NAPI | |
1745 | /** | |
1746 | * ixgb_clean - NAPI Rx polling callback | |
1747 | * @adapter: board private structure | |
1748 | **/ | |
1749 | ||
1750 | static int | |
bea3348e | 1751 | ixgb_clean(struct napi_struct *napi, int budget) |
1da177e4 | 1752 | { |
bea3348e SH |
1753 | struct ixgb_adapter *adapter = container_of(napi, struct ixgb_adapter, napi); |
1754 | struct net_device *netdev = adapter->netdev; | |
1da177e4 LT |
1755 | int work_done = 0; |
1756 | ||
53e52c72 | 1757 | ixgb_clean_tx_irq(adapter); |
bea3348e | 1758 | ixgb_clean_rx_irq(adapter, &work_done, budget); |
1da177e4 | 1759 | |
53e52c72 DM |
1760 | /* If budget not fully consumed, exit the polling mode */ |
1761 | if (work_done < budget) { | |
bea3348e | 1762 | netif_rx_complete(netdev, napi); |
72ab5195 JB |
1763 | if (!test_bit(__IXGB_DOWN, &adapter->flags)) |
1764 | ixgb_irq_enable(adapter); | |
1da177e4 LT |
1765 | } |
1766 | ||
bea3348e | 1767 | return work_done; |
1da177e4 LT |
1768 | } |
1769 | #endif | |
1770 | ||
1771 | /** | |
1772 | * ixgb_clean_tx_irq - Reclaim resources after transmit completes | |
1773 | * @adapter: board private structure | |
1774 | **/ | |
1775 | ||
446490ca | 1776 | static bool |
1da177e4 LT |
1777 | ixgb_clean_tx_irq(struct ixgb_adapter *adapter) |
1778 | { | |
1779 | struct ixgb_desc_ring *tx_ring = &adapter->tx_ring; | |
1780 | struct net_device *netdev = adapter->netdev; | |
1781 | struct ixgb_tx_desc *tx_desc, *eop_desc; | |
1782 | struct ixgb_buffer *buffer_info; | |
1783 | unsigned int i, eop; | |
446490ca | 1784 | bool cleaned = false; |
1da177e4 LT |
1785 | |
1786 | i = tx_ring->next_to_clean; | |
1787 | eop = tx_ring->buffer_info[i].next_to_watch; | |
1788 | eop_desc = IXGB_TX_DESC(*tx_ring, eop); | |
1789 | ||
9a432992 | 1790 | while (eop_desc->status & IXGB_TX_DESC_STATUS_DD) { |
1da177e4 | 1791 | |
446490ca | 1792 | for (cleaned = false; !cleaned; ) { |
1da177e4 LT |
1793 | tx_desc = IXGB_TX_DESC(*tx_ring, i); |
1794 | buffer_info = &tx_ring->buffer_info[i]; | |
1795 | ||
0060c072 JB |
1796 | if (tx_desc->popts & |
1797 | (IXGB_TX_DESC_POPTS_TXSM | | |
1798 | IXGB_TX_DESC_POPTS_IXSM)) | |
1da177e4 LT |
1799 | adapter->hw_csum_tx_good++; |
1800 | ||
1801 | ixgb_unmap_and_free_tx_resource(adapter, buffer_info); | |
1802 | ||
222441a6 | 1803 | *(u32 *)&(tx_desc->status) = 0; |
1da177e4 LT |
1804 | |
1805 | cleaned = (i == eop); | |
03f83041 | 1806 | if (++i == tx_ring->count) i = 0; |
1da177e4 LT |
1807 | } |
1808 | ||
1809 | eop = tx_ring->buffer_info[i].next_to_watch; | |
1810 | eop_desc = IXGB_TX_DESC(*tx_ring, eop); | |
1811 | } | |
1812 | ||
1813 | tx_ring->next_to_clean = i; | |
1814 | ||
0f8ecbad JB |
1815 | if (unlikely(cleaned && netif_carrier_ok(netdev) && |
1816 | IXGB_DESC_UNUSED(tx_ring) >= DESC_NEEDED)) { | |
1817 | /* Make sure that anybody stopping the queue after this | |
1818 | * sees the new next_to_clean. */ | |
1819 | smp_mb(); | |
1820 | ||
1821 | if (netif_queue_stopped(netdev) && | |
1822 | !(test_bit(__IXGB_DOWN, &adapter->flags))) { | |
3352a3b2 | 1823 | netif_wake_queue(netdev); |
0f8ecbad JB |
1824 | ++adapter->restart_queue; |
1825 | } | |
1da177e4 | 1826 | } |
1da177e4 | 1827 | |
03f83041 | 1828 | if (adapter->detect_tx_hung) { |
1da177e4 LT |
1829 | /* detect a transmit hang in hardware, this serializes the |
1830 | * check with the clearing of time_stamp and movement of i */ | |
446490ca | 1831 | adapter->detect_tx_hung = false; |
9b8118df AK |
1832 | if (tx_ring->buffer_info[eop].dma && |
1833 | time_after(jiffies, tx_ring->buffer_info[eop].time_stamp + HZ) | |
1da177e4 | 1834 | && !(IXGB_READ_REG(&adapter->hw, STATUS) & |
9b8118df AK |
1835 | IXGB_STATUS_TXOFF)) { |
1836 | /* detected Tx unit hang */ | |
1837 | DPRINTK(DRV, ERR, "Detected Tx Unit Hang\n" | |
1838 | " TDH <%x>\n" | |
1839 | " TDT <%x>\n" | |
1840 | " next_to_use <%x>\n" | |
1841 | " next_to_clean <%x>\n" | |
1842 | "buffer_info[next_to_clean]\n" | |
1843 | " time_stamp <%lx>\n" | |
1844 | " next_to_watch <%x>\n" | |
1845 | " jiffies <%lx>\n" | |
1846 | " next_to_watch.status <%x>\n", | |
1847 | IXGB_READ_REG(&adapter->hw, TDH), | |
1848 | IXGB_READ_REG(&adapter->hw, TDT), | |
1849 | tx_ring->next_to_use, | |
1850 | tx_ring->next_to_clean, | |
1851 | tx_ring->buffer_info[eop].time_stamp, | |
1852 | eop, | |
1853 | jiffies, | |
1854 | eop_desc->status); | |
1da177e4 | 1855 | netif_stop_queue(netdev); |
9b8118df | 1856 | } |
1da177e4 LT |
1857 | } |
1858 | ||
1859 | return cleaned; | |
1860 | } | |
1861 | ||
1862 | /** | |
1863 | * ixgb_rx_checksum - Receive Checksum Offload for 82597. | |
1864 | * @adapter: board private structure | |
1865 | * @rx_desc: receive descriptor | |
1866 | * @sk_buff: socket buffer with received data | |
1867 | **/ | |
1868 | ||
235949d1 | 1869 | static void |
1da177e4 | 1870 | ixgb_rx_checksum(struct ixgb_adapter *adapter, |
0060c072 JB |
1871 | struct ixgb_rx_desc *rx_desc, |
1872 | struct sk_buff *skb) | |
1da177e4 LT |
1873 | { |
1874 | /* Ignore Checksum bit is set OR | |
1875 | * TCP Checksum has not been calculated | |
1876 | */ | |
03f83041 | 1877 | if ((rx_desc->status & IXGB_RX_DESC_STATUS_IXSM) || |
1da177e4 LT |
1878 | (!(rx_desc->status & IXGB_RX_DESC_STATUS_TCPCS))) { |
1879 | skb->ip_summed = CHECKSUM_NONE; | |
1880 | return; | |
1881 | } | |
1882 | ||
1883 | /* At this point we know the hardware did the TCP checksum */ | |
1884 | /* now look at the TCP checksum error bit */ | |
03f83041 | 1885 | if (rx_desc->errors & IXGB_RX_DESC_ERRORS_TCPE) { |
1da177e4 LT |
1886 | /* let the stack verify checksum errors */ |
1887 | skb->ip_summed = CHECKSUM_NONE; | |
1888 | adapter->hw_csum_rx_error++; | |
1889 | } else { | |
1890 | /* TCP checksum is good */ | |
1891 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
1892 | adapter->hw_csum_rx_good++; | |
1893 | } | |
1894 | } | |
1895 | ||
1896 | /** | |
1897 | * ixgb_clean_rx_irq - Send received data up the network stack, | |
1898 | * @adapter: board private structure | |
1899 | **/ | |
1900 | ||
446490ca | 1901 | static bool |
1da177e4 LT |
1902 | #ifdef CONFIG_IXGB_NAPI |
1903 | ixgb_clean_rx_irq(struct ixgb_adapter *adapter, int *work_done, int work_to_do) | |
1904 | #else | |
1905 | ixgb_clean_rx_irq(struct ixgb_adapter *adapter) | |
1906 | #endif | |
1907 | { | |
1908 | struct ixgb_desc_ring *rx_ring = &adapter->rx_ring; | |
1909 | struct net_device *netdev = adapter->netdev; | |
1910 | struct pci_dev *pdev = adapter->pdev; | |
1911 | struct ixgb_rx_desc *rx_desc, *next_rxd; | |
1912 | struct ixgb_buffer *buffer_info, *next_buffer, *next2_buffer; | |
222441a6 | 1913 | u32 length; |
1da177e4 | 1914 | unsigned int i, j; |
fc2d14e3 | 1915 | int cleaned_count = 0; |
446490ca | 1916 | bool cleaned = false; |
1da177e4 LT |
1917 | |
1918 | i = rx_ring->next_to_clean; | |
1919 | rx_desc = IXGB_RX_DESC(*rx_ring, i); | |
1920 | buffer_info = &rx_ring->buffer_info[i]; | |
1921 | ||
9a432992 | 1922 | while (rx_desc->status & IXGB_RX_DESC_STATUS_DD) { |
fc2d14e3 | 1923 | struct sk_buff *skb; |
f404de1c | 1924 | u8 status; |
1da177e4 LT |
1925 | |
1926 | #ifdef CONFIG_IXGB_NAPI | |
03f83041 | 1927 | if (*work_done >= work_to_do) |
1da177e4 LT |
1928 | break; |
1929 | ||
1930 | (*work_done)++; | |
1931 | #endif | |
f404de1c | 1932 | status = rx_desc->status; |
1da177e4 | 1933 | skb = buffer_info->skb; |
1dfdd7df | 1934 | buffer_info->skb = NULL; |
f404de1c | 1935 | |
fc2d14e3 | 1936 | prefetch(skb->data - NET_IP_ALIGN); |
1da177e4 | 1937 | |
03f83041 | 1938 | if (++i == rx_ring->count) i = 0; |
1da177e4 LT |
1939 | next_rxd = IXGB_RX_DESC(*rx_ring, i); |
1940 | prefetch(next_rxd); | |
1941 | ||
03f83041 | 1942 | if ((j = i + 1) == rx_ring->count) j = 0; |
1da177e4 LT |
1943 | next2_buffer = &rx_ring->buffer_info[j]; |
1944 | prefetch(next2_buffer); | |
1945 | ||
1946 | next_buffer = &rx_ring->buffer_info[i]; | |
1da177e4 | 1947 | |
446490ca | 1948 | cleaned = true; |
fc2d14e3 | 1949 | cleaned_count++; |
1da177e4 LT |
1950 | |
1951 | pci_unmap_single(pdev, | |
1952 | buffer_info->dma, | |
1953 | buffer_info->length, | |
1954 | PCI_DMA_FROMDEVICE); | |
fc2d14e3 | 1955 | buffer_info->dma = 0; |
1da177e4 LT |
1956 | |
1957 | length = le16_to_cpu(rx_desc->length); | |
fc2d14e3 | 1958 | rx_desc->length = 0; |
1da177e4 | 1959 | |
03f83041 | 1960 | if (unlikely(!(status & IXGB_RX_DESC_STATUS_EOP))) { |
1da177e4 LT |
1961 | |
1962 | /* All receives must fit into a single buffer */ | |
1963 | ||
1964 | IXGB_DBG("Receive packet consumed multiple buffers " | |
1965 | "length<%x>\n", length); | |
1966 | ||
1967 | dev_kfree_skb_irq(skb); | |
f404de1c | 1968 | goto rxdesc_done; |
1da177e4 LT |
1969 | } |
1970 | ||
0060c072 JB |
1971 | if (unlikely(rx_desc->errors & |
1972 | (IXGB_RX_DESC_ERRORS_CE | IXGB_RX_DESC_ERRORS_SE | | |
1973 | IXGB_RX_DESC_ERRORS_P | IXGB_RX_DESC_ERRORS_RXE))) { | |
1da177e4 | 1974 | dev_kfree_skb_irq(skb); |
f404de1c | 1975 | goto rxdesc_done; |
1da177e4 LT |
1976 | } |
1977 | ||
6b900bb4 AK |
1978 | /* code added for copybreak, this should improve |
1979 | * performance for small packets with large amounts | |
1980 | * of reassembly being done in the stack */ | |
d9fed18b | 1981 | if (length < copybreak) { |
6b900bb4 | 1982 | struct sk_buff *new_skb = |
5791704f | 1983 | netdev_alloc_skb(netdev, length + NET_IP_ALIGN); |
6b900bb4 AK |
1984 | if (new_skb) { |
1985 | skb_reserve(new_skb, NET_IP_ALIGN); | |
27d7ff46 ACM |
1986 | skb_copy_to_linear_data_offset(new_skb, |
1987 | -NET_IP_ALIGN, | |
1988 | (skb->data - | |
1989 | NET_IP_ALIGN), | |
1990 | (length + | |
1991 | NET_IP_ALIGN)); | |
6b900bb4 AK |
1992 | /* save the skb in buffer_info as good */ |
1993 | buffer_info->skb = skb; | |
1994 | skb = new_skb; | |
1995 | } | |
1996 | } | |
1997 | /* end copybreak code */ | |
1998 | ||
1da177e4 LT |
1999 | /* Good Receive */ |
2000 | skb_put(skb, length); | |
2001 | ||
2002 | /* Receive Checksum Offload */ | |
2003 | ixgb_rx_checksum(adapter, rx_desc, skb); | |
2004 | ||
2005 | skb->protocol = eth_type_trans(skb, netdev); | |
2006 | #ifdef CONFIG_IXGB_NAPI | |
03f83041 | 2007 | if (adapter->vlgrp && (status & IXGB_RX_DESC_STATUS_VP)) { |
1da177e4 | 2008 | vlan_hwaccel_receive_skb(skb, adapter->vlgrp, |
0060c072 | 2009 | le16_to_cpu(rx_desc->special)); |
1da177e4 LT |
2010 | } else { |
2011 | netif_receive_skb(skb); | |
2012 | } | |
2013 | #else /* CONFIG_IXGB_NAPI */ | |
03f83041 | 2014 | if (adapter->vlgrp && (status & IXGB_RX_DESC_STATUS_VP)) { |
1da177e4 | 2015 | vlan_hwaccel_rx(skb, adapter->vlgrp, |
0060c072 | 2016 | le16_to_cpu(rx_desc->special)); |
1da177e4 LT |
2017 | } else { |
2018 | netif_rx(skb); | |
2019 | } | |
2020 | #endif /* CONFIG_IXGB_NAPI */ | |
2021 | netdev->last_rx = jiffies; | |
2022 | ||
f404de1c MC |
2023 | rxdesc_done: |
2024 | /* clean up descriptor, might be written over by hw */ | |
1da177e4 | 2025 | rx_desc->status = 0; |
1da177e4 | 2026 | |
fc2d14e3 JB |
2027 | /* return some buffers to hardware, one at a time is too slow */ |
2028 | if (unlikely(cleaned_count >= IXGB_RX_BUFFER_WRITE)) { | |
2029 | ixgb_alloc_rx_buffers(adapter, cleaned_count); | |
2030 | cleaned_count = 0; | |
2031 | } | |
2032 | ||
f404de1c | 2033 | /* use prefetched values */ |
1da177e4 LT |
2034 | rx_desc = next_rxd; |
2035 | buffer_info = next_buffer; | |
2036 | } | |
2037 | ||
2038 | rx_ring->next_to_clean = i; | |
2039 | ||
fc2d14e3 JB |
2040 | cleaned_count = IXGB_DESC_UNUSED(rx_ring); |
2041 | if (cleaned_count) | |
2042 | ixgb_alloc_rx_buffers(adapter, cleaned_count); | |
1da177e4 LT |
2043 | |
2044 | return cleaned; | |
2045 | } | |
2046 | ||
2047 | /** | |
2048 | * ixgb_alloc_rx_buffers - Replace used receive buffers | |
2049 | * @adapter: address of board private structure | |
2050 | **/ | |
2051 | ||
2052 | static void | |
fc2d14e3 | 2053 | ixgb_alloc_rx_buffers(struct ixgb_adapter *adapter, int cleaned_count) |
1da177e4 LT |
2054 | { |
2055 | struct ixgb_desc_ring *rx_ring = &adapter->rx_ring; | |
2056 | struct net_device *netdev = adapter->netdev; | |
2057 | struct pci_dev *pdev = adapter->pdev; | |
2058 | struct ixgb_rx_desc *rx_desc; | |
2059 | struct ixgb_buffer *buffer_info; | |
2060 | struct sk_buff *skb; | |
2061 | unsigned int i; | |
1da177e4 LT |
2062 | long cleancount; |
2063 | ||
2064 | i = rx_ring->next_to_use; | |
2065 | buffer_info = &rx_ring->buffer_info[i]; | |
2066 | cleancount = IXGB_DESC_UNUSED(rx_ring); | |
2067 | ||
1da177e4 | 2068 | |
41639fed | 2069 | /* leave three descriptors unused */ |
fc2d14e3 | 2070 | while (--cleancount > 2 && cleaned_count--) { |
1dfdd7df | 2071 | /* recycle! its good for you */ |
69c7a940 AK |
2072 | skb = buffer_info->skb; |
2073 | if (skb) { | |
1dfdd7df AK |
2074 | skb_trim(skb, 0); |
2075 | goto map_skb; | |
2076 | } | |
1da177e4 | 2077 | |
69c7a940 AK |
2078 | skb = netdev_alloc_skb(netdev, adapter->rx_buffer_len |
2079 | + NET_IP_ALIGN); | |
1dfdd7df | 2080 | if (unlikely(!skb)) { |
1da177e4 | 2081 | /* Better luck next round */ |
1dfdd7df | 2082 | adapter->alloc_rx_buff_failed++; |
1da177e4 LT |
2083 | break; |
2084 | } | |
2085 | ||
2086 | /* Make buffer alignment 2 beyond a 16 byte boundary | |
2087 | * this will result in a 16 byte aligned IP header after | |
2088 | * the 14 byte MAC header is removed | |
2089 | */ | |
2090 | skb_reserve(skb, NET_IP_ALIGN); | |
2091 | ||
1da177e4 LT |
2092 | buffer_info->skb = skb; |
2093 | buffer_info->length = adapter->rx_buffer_len; | |
1dfdd7df AK |
2094 | map_skb: |
2095 | buffer_info->dma = pci_map_single(pdev, | |
2096 | skb->data, | |
2097 | adapter->rx_buffer_len, | |
2098 | PCI_DMA_FROMDEVICE); | |
1da177e4 | 2099 | |
1dfdd7df | 2100 | rx_desc = IXGB_RX_DESC(*rx_ring, i); |
1da177e4 | 2101 | rx_desc->buff_addr = cpu_to_le64(buffer_info->dma); |
41639fed | 2102 | /* guarantee DD bit not set now before h/w gets descriptor |
0060c072 | 2103 | * this is the rest of the workaround for h/w double |
41639fed MC |
2104 | * writeback. */ |
2105 | rx_desc->status = 0; | |
1da177e4 | 2106 | |
1da177e4 | 2107 | |
03f83041 | 2108 | if (++i == rx_ring->count) i = 0; |
1da177e4 LT |
2109 | buffer_info = &rx_ring->buffer_info[i]; |
2110 | } | |
2111 | ||
1dfdd7df AK |
2112 | if (likely(rx_ring->next_to_use != i)) { |
2113 | rx_ring->next_to_use = i; | |
2114 | if (unlikely(i-- == 0)) | |
2115 | i = (rx_ring->count - 1); | |
2116 | ||
2117 | /* Force memory writes to complete before letting h/w | |
2118 | * know there are new descriptors to fetch. (Only | |
2119 | * applicable for weak-ordered memory model archs, such | |
2120 | * as IA-64). */ | |
2121 | wmb(); | |
2122 | IXGB_WRITE_REG(&adapter->hw, RDT, i); | |
2123 | } | |
1da177e4 LT |
2124 | } |
2125 | ||
2126 | /** | |
2127 | * ixgb_vlan_rx_register - enables or disables vlan tagging/stripping. | |
0060c072 | 2128 | * |
1da177e4 LT |
2129 | * @param netdev network interface device structure |
2130 | * @param grp indicates to enable or disable tagging/stripping | |
2131 | **/ | |
2132 | static void | |
2133 | ixgb_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp) | |
2134 | { | |
8908c6cd | 2135 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
222441a6 | 2136 | u32 ctrl, rctl; |
1da177e4 LT |
2137 | |
2138 | ixgb_irq_disable(adapter); | |
2139 | adapter->vlgrp = grp; | |
2140 | ||
03f83041 | 2141 | if (grp) { |
1da177e4 LT |
2142 | /* enable VLAN tag insert/strip */ |
2143 | ctrl = IXGB_READ_REG(&adapter->hw, CTRL0); | |
2144 | ctrl |= IXGB_CTRL0_VME; | |
2145 | IXGB_WRITE_REG(&adapter->hw, CTRL0, ctrl); | |
2146 | ||
2147 | /* enable VLAN receive filtering */ | |
2148 | ||
2149 | rctl = IXGB_READ_REG(&adapter->hw, RCTL); | |
2150 | rctl |= IXGB_RCTL_VFE; | |
2151 | rctl &= ~IXGB_RCTL_CFIEN; | |
2152 | IXGB_WRITE_REG(&adapter->hw, RCTL, rctl); | |
2153 | } else { | |
2154 | /* disable VLAN tag insert/strip */ | |
2155 | ||
2156 | ctrl = IXGB_READ_REG(&adapter->hw, CTRL0); | |
2157 | ctrl &= ~IXGB_CTRL0_VME; | |
2158 | IXGB_WRITE_REG(&adapter->hw, CTRL0, ctrl); | |
2159 | ||
2160 | /* disable VLAN filtering */ | |
2161 | ||
2162 | rctl = IXGB_READ_REG(&adapter->hw, RCTL); | |
2163 | rctl &= ~IXGB_RCTL_VFE; | |
2164 | IXGB_WRITE_REG(&adapter->hw, RCTL, rctl); | |
2165 | } | |
2166 | ||
bab2bce7 JB |
2167 | /* don't enable interrupts unless we are UP */ |
2168 | if (adapter->netdev->flags & IFF_UP) | |
2169 | ixgb_irq_enable(adapter); | |
1da177e4 LT |
2170 | } |
2171 | ||
2172 | static void | |
222441a6 | 2173 | ixgb_vlan_rx_add_vid(struct net_device *netdev, u16 vid) |
1da177e4 | 2174 | { |
8908c6cd | 2175 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
222441a6 | 2176 | u32 vfta, index; |
1da177e4 LT |
2177 | |
2178 | /* add VID to filter table */ | |
2179 | ||
2180 | index = (vid >> 5) & 0x7F; | |
2181 | vfta = IXGB_READ_REG_ARRAY(&adapter->hw, VFTA, index); | |
2182 | vfta |= (1 << (vid & 0x1F)); | |
2183 | ixgb_write_vfta(&adapter->hw, index, vfta); | |
2184 | } | |
2185 | ||
2186 | static void | |
222441a6 | 2187 | ixgb_vlan_rx_kill_vid(struct net_device *netdev, u16 vid) |
1da177e4 | 2188 | { |
8908c6cd | 2189 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
222441a6 | 2190 | u32 vfta, index; |
1da177e4 LT |
2191 | |
2192 | ixgb_irq_disable(adapter); | |
2193 | ||
5c15bdec | 2194 | vlan_group_set_device(adapter->vlgrp, vid, NULL); |
1da177e4 | 2195 | |
bab2bce7 JB |
2196 | /* don't enable interrupts unless we are UP */ |
2197 | if (adapter->netdev->flags & IFF_UP) | |
2198 | ixgb_irq_enable(adapter); | |
1da177e4 | 2199 | |
bab2bce7 | 2200 | /* remove VID from filter table */ |
1da177e4 LT |
2201 | |
2202 | index = (vid >> 5) & 0x7F; | |
2203 | vfta = IXGB_READ_REG_ARRAY(&adapter->hw, VFTA, index); | |
2204 | vfta &= ~(1 << (vid & 0x1F)); | |
2205 | ixgb_write_vfta(&adapter->hw, index, vfta); | |
2206 | } | |
2207 | ||
2208 | static void | |
2209 | ixgb_restore_vlan(struct ixgb_adapter *adapter) | |
2210 | { | |
2211 | ixgb_vlan_rx_register(adapter->netdev, adapter->vlgrp); | |
2212 | ||
03f83041 | 2213 | if (adapter->vlgrp) { |
222441a6 | 2214 | u16 vid; |
1459336d | 2215 | for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) { |
03f83041 | 2216 | if (!vlan_group_get_device(adapter->vlgrp, vid)) |
1da177e4 LT |
2217 | continue; |
2218 | ixgb_vlan_rx_add_vid(adapter->netdev, vid); | |
2219 | } | |
2220 | } | |
2221 | } | |
2222 | ||
1da177e4 LT |
2223 | #ifdef CONFIG_NET_POLL_CONTROLLER |
2224 | /* | |
2225 | * Polling 'interrupt' - used by things like netconsole to send skbs | |
2226 | * without having to re-enable interrupts. It's not called while | |
2227 | * the interrupt routine is executing. | |
2228 | */ | |
2229 | ||
2230 | static void ixgb_netpoll(struct net_device *dev) | |
2231 | { | |
f990b426 | 2232 | struct ixgb_adapter *adapter = netdev_priv(dev); |
ac79c82e | 2233 | |
1da177e4 | 2234 | disable_irq(adapter->pdev->irq); |
7d12e780 | 2235 | ixgb_intr(adapter->pdev->irq, dev); |
1da177e4 LT |
2236 | enable_irq(adapter->pdev->irq); |
2237 | } | |
2238 | #endif | |
2239 | ||
01748fbb LV |
2240 | /** |
2241 | * ixgb_io_error_detected() - called when PCI error is detected | |
2242 | * @pdev pointer to pci device with error | |
2243 | * @state pci channel state after error | |
2244 | * | |
2245 | * This callback is called by the PCI subsystem whenever | |
2246 | * a PCI bus error is detected. | |
2247 | */ | |
0060c072 JB |
2248 | static pci_ers_result_t ixgb_io_error_detected(struct pci_dev *pdev, |
2249 | enum pci_channel_state state) | |
01748fbb LV |
2250 | { |
2251 | struct net_device *netdev = pci_get_drvdata(pdev); | |
f7d4fa01 | 2252 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
01748fbb | 2253 | |
03f83041 | 2254 | if (netif_running(netdev)) |
446490ca | 2255 | ixgb_down(adapter, true); |
01748fbb LV |
2256 | |
2257 | pci_disable_device(pdev); | |
2258 | ||
2259 | /* Request a slot reset. */ | |
2260 | return PCI_ERS_RESULT_NEED_RESET; | |
2261 | } | |
2262 | ||
2263 | /** | |
2264 | * ixgb_io_slot_reset - called after the pci bus has been reset. | |
2265 | * @pdev pointer to pci device with error | |
2266 | * | |
52035bdb | 2267 | * This callback is called after the PCI bus has been reset. |
01748fbb LV |
2268 | * Basically, this tries to restart the card from scratch. |
2269 | * This is a shortened version of the device probe/discovery code, | |
2270 | * it resembles the first-half of the ixgb_probe() routine. | |
2271 | */ | |
0060c072 | 2272 | static pci_ers_result_t ixgb_io_slot_reset(struct pci_dev *pdev) |
01748fbb LV |
2273 | { |
2274 | struct net_device *netdev = pci_get_drvdata(pdev); | |
f7d4fa01 | 2275 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
01748fbb | 2276 | |
03f83041 | 2277 | if (pci_enable_device(pdev)) { |
01748fbb LV |
2278 | DPRINTK(PROBE, ERR, "Cannot re-enable PCI device after reset.\n"); |
2279 | return PCI_ERS_RESULT_DISCONNECT; | |
2280 | } | |
2281 | ||
2282 | /* Perform card reset only on one instance of the card */ | |
2283 | if (0 != PCI_FUNC (pdev->devfn)) | |
2284 | return PCI_ERS_RESULT_RECOVERED; | |
2285 | ||
2286 | pci_set_master(pdev); | |
2287 | ||
2288 | netif_carrier_off(netdev); | |
2289 | netif_stop_queue(netdev); | |
2290 | ixgb_reset(adapter); | |
2291 | ||
2292 | /* Make sure the EEPROM is good */ | |
03f83041 | 2293 | if (!ixgb_validate_eeprom_checksum(&adapter->hw)) { |
01748fbb LV |
2294 | DPRINTK(PROBE, ERR, "After reset, the EEPROM checksum is not valid.\n"); |
2295 | return PCI_ERS_RESULT_DISCONNECT; | |
2296 | } | |
2297 | ixgb_get_ee_mac_addr(&adapter->hw, netdev->dev_addr); | |
2298 | memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len); | |
2299 | ||
03f83041 | 2300 | if (!is_valid_ether_addr(netdev->perm_addr)) { |
01748fbb LV |
2301 | DPRINTK(PROBE, ERR, "After reset, invalid MAC address.\n"); |
2302 | return PCI_ERS_RESULT_DISCONNECT; | |
2303 | } | |
2304 | ||
2305 | return PCI_ERS_RESULT_RECOVERED; | |
2306 | } | |
2307 | ||
2308 | /** | |
2309 | * ixgb_io_resume - called when its OK to resume normal operations | |
2310 | * @pdev pointer to pci device with error | |
2311 | * | |
2312 | * The error recovery driver tells us that its OK to resume | |
2313 | * normal operation. Implementation resembles the second-half | |
2314 | * of the ixgb_probe() routine. | |
2315 | */ | |
0060c072 | 2316 | static void ixgb_io_resume(struct pci_dev *pdev) |
01748fbb LV |
2317 | { |
2318 | struct net_device *netdev = pci_get_drvdata(pdev); | |
f7d4fa01 | 2319 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
01748fbb LV |
2320 | |
2321 | pci_set_master(pdev); | |
2322 | ||
03f83041 JB |
2323 | if (netif_running(netdev)) { |
2324 | if (ixgb_up(adapter)) { | |
01748fbb LV |
2325 | printk ("ixgb: can't bring device back up after reset\n"); |
2326 | return; | |
2327 | } | |
2328 | } | |
2329 | ||
2330 | netif_device_attach(netdev); | |
2331 | mod_timer(&adapter->watchdog_timer, jiffies); | |
2332 | } | |
2333 | ||
1da177e4 | 2334 | /* ixgb_main.c */ |