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 | |
9ee093f6 | 39 | #define DRV_VERSION "1.0.112-k2"DRIVERNAPI |
01e5abc2 | 40 | char ixgb_driver_version[] = DRV_VERSION; |
d3f464b5 | 41 | static char ixgb_copyright[] = "Copyright (c) 1999-2006 Intel Corporation."; |
1da177e4 LT |
42 | |
43 | /* ixgb_pci_tbl - PCI Device ID Table | |
44 | * | |
45 | * Wildcard entries (PCI_ANY_ID) should come last | |
46 | * Last entry must be all 0s | |
47 | * | |
48 | * { Vendor ID, Device ID, SubVendor ID, SubDevice ID, | |
49 | * Class, Class Mask, private data (not used) } | |
50 | */ | |
51 | static struct pci_device_id ixgb_pci_tbl[] = { | |
52 | {INTEL_VENDOR_ID, IXGB_DEVICE_ID_82597EX, | |
53 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, | |
940829e2 AK |
54 | {INTEL_VENDOR_ID, IXGB_DEVICE_ID_82597EX_CX4, |
55 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, | |
1da177e4 LT |
56 | {INTEL_VENDOR_ID, IXGB_DEVICE_ID_82597EX_SR, |
57 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, | |
58 | {INTEL_VENDOR_ID, IXGB_DEVICE_ID_82597EX_LR, | |
59 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, | |
60 | ||
61 | /* required last entry */ | |
62 | {0,} | |
63 | }; | |
64 | ||
65 | MODULE_DEVICE_TABLE(pci, ixgb_pci_tbl); | |
66 | ||
67 | /* Local Function Prototypes */ | |
68 | ||
69 | int ixgb_up(struct ixgb_adapter *adapter); | |
70 | void ixgb_down(struct ixgb_adapter *adapter, boolean_t kill_watchdog); | |
71 | void ixgb_reset(struct ixgb_adapter *adapter); | |
72 | int ixgb_setup_tx_resources(struct ixgb_adapter *adapter); | |
73 | int ixgb_setup_rx_resources(struct ixgb_adapter *adapter); | |
74 | void ixgb_free_tx_resources(struct ixgb_adapter *adapter); | |
75 | void ixgb_free_rx_resources(struct ixgb_adapter *adapter); | |
76 | void ixgb_update_stats(struct ixgb_adapter *adapter); | |
77 | ||
78 | static int ixgb_init_module(void); | |
79 | static void ixgb_exit_module(void); | |
80 | static int ixgb_probe(struct pci_dev *pdev, const struct pci_device_id *ent); | |
81 | static void __devexit ixgb_remove(struct pci_dev *pdev); | |
82 | static int ixgb_sw_init(struct ixgb_adapter *adapter); | |
83 | static int ixgb_open(struct net_device *netdev); | |
84 | static int ixgb_close(struct net_device *netdev); | |
85 | static void ixgb_configure_tx(struct ixgb_adapter *adapter); | |
86 | static void ixgb_configure_rx(struct ixgb_adapter *adapter); | |
87 | static void ixgb_setup_rctl(struct ixgb_adapter *adapter); | |
88 | static void ixgb_clean_tx_ring(struct ixgb_adapter *adapter); | |
89 | static void ixgb_clean_rx_ring(struct ixgb_adapter *adapter); | |
90 | static void ixgb_set_multi(struct net_device *netdev); | |
91 | static void ixgb_watchdog(unsigned long data); | |
92 | static int ixgb_xmit_frame(struct sk_buff *skb, struct net_device *netdev); | |
93 | static struct net_device_stats *ixgb_get_stats(struct net_device *netdev); | |
94 | static int ixgb_change_mtu(struct net_device *netdev, int new_mtu); | |
95 | static int ixgb_set_mac(struct net_device *netdev, void *p); | |
96 | static irqreturn_t ixgb_intr(int irq, void *data, struct pt_regs *regs); | |
97 | static boolean_t ixgb_clean_tx_irq(struct ixgb_adapter *adapter); | |
ac79c82e | 98 | |
1da177e4 LT |
99 | #ifdef CONFIG_IXGB_NAPI |
100 | static int ixgb_clean(struct net_device *netdev, int *budget); | |
101 | static boolean_t ixgb_clean_rx_irq(struct ixgb_adapter *adapter, | |
102 | int *work_done, int work_to_do); | |
103 | #else | |
104 | static boolean_t ixgb_clean_rx_irq(struct ixgb_adapter *adapter); | |
105 | #endif | |
106 | static void ixgb_alloc_rx_buffers(struct ixgb_adapter *adapter); | |
107 | void ixgb_set_ethtool_ops(struct net_device *netdev); | |
108 | static void ixgb_tx_timeout(struct net_device *dev); | |
109 | static void ixgb_tx_timeout_task(struct net_device *dev); | |
110 | static void ixgb_vlan_rx_register(struct net_device *netdev, | |
111 | struct vlan_group *grp); | |
112 | static void ixgb_vlan_rx_add_vid(struct net_device *netdev, uint16_t vid); | |
113 | static void ixgb_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid); | |
114 | static void ixgb_restore_vlan(struct ixgb_adapter *adapter); | |
115 | ||
1da177e4 LT |
116 | #ifdef CONFIG_NET_POLL_CONTROLLER |
117 | /* for netdump / net console */ | |
118 | static void ixgb_netpoll(struct net_device *dev); | |
119 | #endif | |
120 | ||
01748fbb LV |
121 | static pci_ers_result_t ixgb_io_error_detected (struct pci_dev *pdev, |
122 | enum pci_channel_state state); | |
123 | static pci_ers_result_t ixgb_io_slot_reset (struct pci_dev *pdev); | |
124 | static void ixgb_io_resume (struct pci_dev *pdev); | |
1da177e4 | 125 | |
01748fbb | 126 | /* Exported from other modules */ |
1da177e4 LT |
127 | extern void ixgb_check_options(struct ixgb_adapter *adapter); |
128 | ||
01748fbb LV |
129 | static struct pci_error_handlers ixgb_err_handler = { |
130 | .error_detected = ixgb_io_error_detected, | |
131 | .slot_reset = ixgb_io_slot_reset, | |
132 | .resume = ixgb_io_resume, | |
133 | }; | |
134 | ||
1da177e4 | 135 | static struct pci_driver ixgb_driver = { |
c2eba932 | 136 | .name = ixgb_driver_name, |
1da177e4 | 137 | .id_table = ixgb_pci_tbl, |
c2eba932 MC |
138 | .probe = ixgb_probe, |
139 | .remove = __devexit_p(ixgb_remove), | |
01748fbb | 140 | .err_handler = &ixgb_err_handler |
1da177e4 LT |
141 | }; |
142 | ||
143 | MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>"); | |
144 | MODULE_DESCRIPTION("Intel(R) PRO/10GbE Network Driver"); | |
145 | MODULE_LICENSE("GPL"); | |
01e5abc2 | 146 | MODULE_VERSION(DRV_VERSION); |
1da177e4 | 147 | |
ec9c3f5d AK |
148 | #define DEFAULT_DEBUG_LEVEL_SHIFT 3 |
149 | static int debug = DEFAULT_DEBUG_LEVEL_SHIFT; | |
150 | module_param(debug, int, 0); | |
151 | MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)"); | |
152 | ||
1da177e4 | 153 | /* some defines for controlling descriptor fetches in h/w */ |
3ae84d92 JB |
154 | #define RXDCTL_WTHRESH_DEFAULT 15 /* chip writes back at this many or RXT0 */ |
155 | #define RXDCTL_PTHRESH_DEFAULT 0 /* chip considers prefech below | |
156 | * this */ | |
157 | #define RXDCTL_HTHRESH_DEFAULT 0 /* chip will only prefetch if tail | |
158 | * is pushed this many descriptors | |
159 | * from head */ | |
1da177e4 LT |
160 | |
161 | /** | |
162 | * ixgb_init_module - Driver Registration Routine | |
163 | * | |
164 | * ixgb_init_module is the first routine called when the driver is | |
165 | * loaded. All it does is register with the PCI subsystem. | |
166 | **/ | |
167 | ||
168 | static int __init | |
169 | ixgb_init_module(void) | |
170 | { | |
1da177e4 LT |
171 | printk(KERN_INFO "%s - version %s\n", |
172 | ixgb_driver_string, ixgb_driver_version); | |
173 | ||
174 | printk(KERN_INFO "%s\n", ixgb_copyright); | |
175 | ||
29917620 | 176 | return pci_register_driver(&ixgb_driver); |
1da177e4 LT |
177 | } |
178 | ||
179 | module_init(ixgb_init_module); | |
180 | ||
181 | /** | |
182 | * ixgb_exit_module - Driver Exit Cleanup Routine | |
183 | * | |
184 | * ixgb_exit_module is called just before the driver is removed | |
185 | * from memory. | |
186 | **/ | |
187 | ||
188 | static void __exit | |
189 | ixgb_exit_module(void) | |
190 | { | |
1da177e4 LT |
191 | pci_unregister_driver(&ixgb_driver); |
192 | } | |
193 | ||
194 | module_exit(ixgb_exit_module); | |
195 | ||
196 | /** | |
197 | * ixgb_irq_disable - Mask off interrupt generation on the NIC | |
198 | * @adapter: board private structure | |
199 | **/ | |
200 | ||
235949d1 | 201 | static void |
1da177e4 LT |
202 | ixgb_irq_disable(struct ixgb_adapter *adapter) |
203 | { | |
204 | atomic_inc(&adapter->irq_sem); | |
205 | IXGB_WRITE_REG(&adapter->hw, IMC, ~0); | |
206 | IXGB_WRITE_FLUSH(&adapter->hw); | |
207 | synchronize_irq(adapter->pdev->irq); | |
208 | } | |
209 | ||
210 | /** | |
211 | * ixgb_irq_enable - Enable default interrupt generation settings | |
212 | * @adapter: board private structure | |
213 | **/ | |
214 | ||
235949d1 | 215 | static void |
1da177e4 LT |
216 | ixgb_irq_enable(struct ixgb_adapter *adapter) |
217 | { | |
218 | if(atomic_dec_and_test(&adapter->irq_sem)) { | |
219 | IXGB_WRITE_REG(&adapter->hw, IMS, | |
6dfbb6dd MC |
220 | IXGB_INT_RXT0 | IXGB_INT_RXDMT0 | IXGB_INT_TXDW | |
221 | IXGB_INT_LSC); | |
1da177e4 LT |
222 | IXGB_WRITE_FLUSH(&adapter->hw); |
223 | } | |
224 | } | |
225 | ||
226 | int | |
227 | ixgb_up(struct ixgb_adapter *adapter) | |
228 | { | |
229 | struct net_device *netdev = adapter->netdev; | |
230 | int err; | |
231 | int max_frame = netdev->mtu + ENET_HEADER_SIZE + ENET_FCS_LENGTH; | |
232 | struct ixgb_hw *hw = &adapter->hw; | |
233 | ||
234 | /* hardware has been reset, we need to reload some things */ | |
235 | ||
8556f0d1 | 236 | ixgb_rar_set(hw, netdev->dev_addr, 0); |
1da177e4 LT |
237 | ixgb_set_multi(netdev); |
238 | ||
239 | ixgb_restore_vlan(adapter); | |
240 | ||
241 | ixgb_configure_tx(adapter); | |
242 | ixgb_setup_rctl(adapter); | |
243 | ixgb_configure_rx(adapter); | |
244 | ixgb_alloc_rx_buffers(adapter); | |
245 | ||
e59d1696 AK |
246 | /* disable interrupts and get the hardware into a known state */ |
247 | IXGB_WRITE_REG(&adapter->hw, IMC, 0xffffffff); | |
248 | ||
1da177e4 LT |
249 | #ifdef CONFIG_PCI_MSI |
250 | { | |
251 | boolean_t pcix = (IXGB_READ_REG(&adapter->hw, STATUS) & | |
252 | IXGB_STATUS_PCIX_MODE) ? TRUE : FALSE; | |
253 | adapter->have_msi = TRUE; | |
254 | ||
255 | if (!pcix) | |
256 | adapter->have_msi = FALSE; | |
257 | else if((err = pci_enable_msi(adapter->pdev))) { | |
ec9c3f5d | 258 | DPRINTK(PROBE, ERR, |
1da177e4 LT |
259 | "Unable to allocate MSI interrupt Error: %d\n", err); |
260 | adapter->have_msi = FALSE; | |
261 | /* proceed to try to request regular interrupt */ | |
262 | } | |
263 | } | |
264 | ||
265 | #endif | |
266 | if((err = request_irq(adapter->pdev->irq, &ixgb_intr, | |
1fb9df5d | 267 | IRQF_SHARED | IRQF_SAMPLE_RANDOM, |
ec9c3f5d AK |
268 | netdev->name, netdev))) { |
269 | DPRINTK(PROBE, ERR, | |
270 | "Unable to allocate interrupt Error: %d\n", err); | |
1da177e4 | 271 | return err; |
ec9c3f5d | 272 | } |
1da177e4 | 273 | |
1da177e4 LT |
274 | if((hw->max_frame_size != max_frame) || |
275 | (hw->max_frame_size != | |
276 | (IXGB_READ_REG(hw, MFS) >> IXGB_MFS_SHIFT))) { | |
277 | ||
278 | hw->max_frame_size = max_frame; | |
279 | ||
280 | IXGB_WRITE_REG(hw, MFS, hw->max_frame_size << IXGB_MFS_SHIFT); | |
281 | ||
282 | if(hw->max_frame_size > | |
283 | IXGB_MAX_ENET_FRAME_SIZE_WITHOUT_FCS + ENET_FCS_LENGTH) { | |
284 | uint32_t ctrl0 = IXGB_READ_REG(hw, CTRL0); | |
285 | ||
286 | if(!(ctrl0 & IXGB_CTRL0_JFE)) { | |
287 | ctrl0 |= IXGB_CTRL0_JFE; | |
288 | IXGB_WRITE_REG(hw, CTRL0, ctrl0); | |
289 | } | |
290 | } | |
291 | } | |
292 | ||
293 | mod_timer(&adapter->watchdog_timer, jiffies); | |
1da177e4 LT |
294 | |
295 | #ifdef CONFIG_IXGB_NAPI | |
296 | netif_poll_enable(netdev); | |
297 | #endif | |
e59d1696 AK |
298 | ixgb_irq_enable(adapter); |
299 | ||
1da177e4 LT |
300 | return 0; |
301 | } | |
302 | ||
303 | void | |
304 | ixgb_down(struct ixgb_adapter *adapter, boolean_t kill_watchdog) | |
305 | { | |
306 | struct net_device *netdev = adapter->netdev; | |
307 | ||
308 | ixgb_irq_disable(adapter); | |
309 | free_irq(adapter->pdev->irq, netdev); | |
310 | #ifdef CONFIG_PCI_MSI | |
311 | if(adapter->have_msi == TRUE) | |
312 | pci_disable_msi(adapter->pdev); | |
313 | ||
314 | #endif | |
315 | if(kill_watchdog) | |
316 | del_timer_sync(&adapter->watchdog_timer); | |
317 | #ifdef CONFIG_IXGB_NAPI | |
318 | netif_poll_disable(netdev); | |
319 | #endif | |
320 | adapter->link_speed = 0; | |
321 | adapter->link_duplex = 0; | |
322 | netif_carrier_off(netdev); | |
323 | netif_stop_queue(netdev); | |
324 | ||
325 | ixgb_reset(adapter); | |
326 | ixgb_clean_tx_ring(adapter); | |
327 | ixgb_clean_rx_ring(adapter); | |
328 | } | |
329 | ||
330 | void | |
331 | ixgb_reset(struct ixgb_adapter *adapter) | |
332 | { | |
333 | ||
334 | ixgb_adapter_stop(&adapter->hw); | |
335 | if(!ixgb_init_hw(&adapter->hw)) | |
ec9c3f5d | 336 | DPRINTK(PROBE, ERR, "ixgb_init_hw failed.\n"); |
1da177e4 LT |
337 | } |
338 | ||
339 | /** | |
340 | * ixgb_probe - Device Initialization Routine | |
341 | * @pdev: PCI device information struct | |
342 | * @ent: entry in ixgb_pci_tbl | |
343 | * | |
344 | * Returns 0 on success, negative on failure | |
345 | * | |
346 | * ixgb_probe initializes an adapter identified by a pci_dev structure. | |
347 | * The OS initialization, configuring of the adapter private structure, | |
348 | * and a hardware reset occur. | |
349 | **/ | |
350 | ||
351 | static int __devinit | |
352 | ixgb_probe(struct pci_dev *pdev, | |
353 | const struct pci_device_id *ent) | |
354 | { | |
355 | struct net_device *netdev = NULL; | |
356 | struct ixgb_adapter *adapter; | |
357 | static int cards_found = 0; | |
358 | unsigned long mmio_start; | |
359 | int mmio_len; | |
360 | int pci_using_dac; | |
361 | int i; | |
362 | int err; | |
363 | ||
364 | if((err = pci_enable_device(pdev))) | |
365 | return err; | |
366 | ||
c91e468a AS |
367 | if(!(err = pci_set_dma_mask(pdev, DMA_64BIT_MASK)) && |
368 | !(err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK))) { | |
1da177e4 LT |
369 | pci_using_dac = 1; |
370 | } else { | |
c91e468a AS |
371 | if((err = pci_set_dma_mask(pdev, DMA_32BIT_MASK)) || |
372 | (err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK))) { | |
ec9c3f5d AK |
373 | printk(KERN_ERR |
374 | "ixgb: No usable DMA configuration, aborting\n"); | |
c91e468a | 375 | goto err_dma_mask; |
1da177e4 LT |
376 | } |
377 | pci_using_dac = 0; | |
378 | } | |
379 | ||
380 | if((err = pci_request_regions(pdev, ixgb_driver_name))) | |
c91e468a | 381 | goto err_request_regions; |
1da177e4 LT |
382 | |
383 | pci_set_master(pdev); | |
384 | ||
385 | netdev = alloc_etherdev(sizeof(struct ixgb_adapter)); | |
386 | if(!netdev) { | |
387 | err = -ENOMEM; | |
388 | goto err_alloc_etherdev; | |
389 | } | |
390 | ||
391 | SET_MODULE_OWNER(netdev); | |
392 | SET_NETDEV_DEV(netdev, &pdev->dev); | |
393 | ||
394 | pci_set_drvdata(pdev, netdev); | |
8908c6cd | 395 | adapter = netdev_priv(netdev); |
1da177e4 LT |
396 | adapter->netdev = netdev; |
397 | adapter->pdev = pdev; | |
398 | adapter->hw.back = adapter; | |
ec9c3f5d | 399 | adapter->msg_enable = netif_msg_init(debug, DEFAULT_DEBUG_LEVEL_SHIFT); |
1da177e4 LT |
400 | |
401 | mmio_start = pci_resource_start(pdev, BAR_0); | |
402 | mmio_len = pci_resource_len(pdev, BAR_0); | |
403 | ||
404 | adapter->hw.hw_addr = ioremap(mmio_start, mmio_len); | |
405 | if(!adapter->hw.hw_addr) { | |
406 | err = -EIO; | |
407 | goto err_ioremap; | |
408 | } | |
409 | ||
410 | for(i = BAR_1; i <= BAR_5; i++) { | |
411 | if(pci_resource_len(pdev, i) == 0) | |
412 | continue; | |
413 | if(pci_resource_flags(pdev, i) & IORESOURCE_IO) { | |
414 | adapter->hw.io_base = pci_resource_start(pdev, i); | |
415 | break; | |
416 | } | |
417 | } | |
418 | ||
419 | netdev->open = &ixgb_open; | |
420 | netdev->stop = &ixgb_close; | |
421 | netdev->hard_start_xmit = &ixgb_xmit_frame; | |
422 | netdev->get_stats = &ixgb_get_stats; | |
423 | netdev->set_multicast_list = &ixgb_set_multi; | |
424 | netdev->set_mac_address = &ixgb_set_mac; | |
425 | netdev->change_mtu = &ixgb_change_mtu; | |
426 | ixgb_set_ethtool_ops(netdev); | |
427 | netdev->tx_timeout = &ixgb_tx_timeout; | |
9b8118df | 428 | netdev->watchdog_timeo = 5 * HZ; |
1da177e4 LT |
429 | #ifdef CONFIG_IXGB_NAPI |
430 | netdev->poll = &ixgb_clean; | |
431 | netdev->weight = 64; | |
432 | #endif | |
433 | netdev->vlan_rx_register = ixgb_vlan_rx_register; | |
434 | netdev->vlan_rx_add_vid = ixgb_vlan_rx_add_vid; | |
435 | netdev->vlan_rx_kill_vid = ixgb_vlan_rx_kill_vid; | |
436 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
437 | netdev->poll_controller = ixgb_netpoll; | |
438 | #endif | |
439 | ||
0eb5a34c | 440 | strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1); |
1da177e4 LT |
441 | netdev->mem_start = mmio_start; |
442 | netdev->mem_end = mmio_start + mmio_len; | |
443 | netdev->base_addr = adapter->hw.io_base; | |
444 | ||
445 | adapter->bd_number = cards_found; | |
446 | adapter->link_speed = 0; | |
447 | adapter->link_duplex = 0; | |
448 | ||
449 | /* setup the private structure */ | |
450 | ||
451 | if((err = ixgb_sw_init(adapter))) | |
452 | goto err_sw_init; | |
453 | ||
454 | netdev->features = NETIF_F_SG | | |
455 | NETIF_F_HW_CSUM | | |
456 | NETIF_F_HW_VLAN_TX | | |
457 | NETIF_F_HW_VLAN_RX | | |
458 | NETIF_F_HW_VLAN_FILTER; | |
459 | #ifdef NETIF_F_TSO | |
460 | netdev->features |= NETIF_F_TSO; | |
461 | #endif | |
f017f14b AK |
462 | #ifdef NETIF_F_LLTX |
463 | netdev->features |= NETIF_F_LLTX; | |
464 | #endif | |
1da177e4 LT |
465 | |
466 | if(pci_using_dac) | |
467 | netdev->features |= NETIF_F_HIGHDMA; | |
468 | ||
469 | /* make sure the EEPROM is good */ | |
470 | ||
471 | if(!ixgb_validate_eeprom_checksum(&adapter->hw)) { | |
ec9c3f5d | 472 | DPRINTK(PROBE, ERR, "The EEPROM Checksum Is Not Valid\n"); |
1da177e4 LT |
473 | err = -EIO; |
474 | goto err_eeprom; | |
475 | } | |
476 | ||
477 | ixgb_get_ee_mac_addr(&adapter->hw, netdev->dev_addr); | |
df859c51 | 478 | memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len); |
1da177e4 | 479 | |
df859c51 | 480 | if(!is_valid_ether_addr(netdev->perm_addr)) { |
ec9c3f5d | 481 | DPRINTK(PROBE, ERR, "Invalid MAC Address\n"); |
1da177e4 LT |
482 | err = -EIO; |
483 | goto err_eeprom; | |
484 | } | |
485 | ||
486 | adapter->part_num = ixgb_get_ee_pba_number(&adapter->hw); | |
487 | ||
488 | init_timer(&adapter->watchdog_timer); | |
489 | adapter->watchdog_timer.function = &ixgb_watchdog; | |
490 | adapter->watchdog_timer.data = (unsigned long)adapter; | |
491 | ||
492 | INIT_WORK(&adapter->tx_timeout_task, | |
493 | (void (*)(void *))ixgb_tx_timeout_task, netdev); | |
494 | ||
ec9c3f5d | 495 | strcpy(netdev->name, "eth%d"); |
1da177e4 LT |
496 | if((err = register_netdev(netdev))) |
497 | goto err_register; | |
498 | ||
499 | /* we're going to reset, so assume we have no link for now */ | |
500 | ||
501 | netif_carrier_off(netdev); | |
502 | netif_stop_queue(netdev); | |
503 | ||
ec9c3f5d | 504 | DPRINTK(PROBE, INFO, "Intel(R) PRO/10GbE Network Connection\n"); |
1da177e4 LT |
505 | ixgb_check_options(adapter); |
506 | /* reset the hardware with the new settings */ | |
507 | ||
508 | ixgb_reset(adapter); | |
509 | ||
510 | cards_found++; | |
511 | return 0; | |
512 | ||
513 | err_register: | |
514 | err_sw_init: | |
515 | err_eeprom: | |
516 | iounmap(adapter->hw.hw_addr); | |
517 | err_ioremap: | |
518 | free_netdev(netdev); | |
519 | err_alloc_etherdev: | |
520 | pci_release_regions(pdev); | |
c91e468a AS |
521 | err_request_regions: |
522 | err_dma_mask: | |
523 | pci_disable_device(pdev); | |
1da177e4 LT |
524 | return err; |
525 | } | |
526 | ||
527 | /** | |
528 | * ixgb_remove - Device Removal Routine | |
529 | * @pdev: PCI device information struct | |
530 | * | |
531 | * ixgb_remove is called by the PCI subsystem to alert the driver | |
532 | * that it should release a PCI device. The could be caused by a | |
533 | * Hot-Plug event, or because the driver is going to be removed from | |
534 | * memory. | |
535 | **/ | |
536 | ||
537 | static void __devexit | |
538 | ixgb_remove(struct pci_dev *pdev) | |
539 | { | |
540 | struct net_device *netdev = pci_get_drvdata(pdev); | |
8908c6cd | 541 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
542 | |
543 | unregister_netdev(netdev); | |
544 | ||
545 | iounmap(adapter->hw.hw_addr); | |
546 | pci_release_regions(pdev); | |
547 | ||
548 | free_netdev(netdev); | |
549 | } | |
550 | ||
551 | /** | |
552 | * ixgb_sw_init - Initialize general software structures (struct ixgb_adapter) | |
553 | * @adapter: board private structure to initialize | |
554 | * | |
555 | * ixgb_sw_init initializes the Adapter private data structure. | |
556 | * Fields are initialized based on PCI device information and | |
557 | * OS network device settings (MTU size). | |
558 | **/ | |
559 | ||
560 | static int __devinit | |
561 | ixgb_sw_init(struct ixgb_adapter *adapter) | |
562 | { | |
563 | struct ixgb_hw *hw = &adapter->hw; | |
564 | struct net_device *netdev = adapter->netdev; | |
565 | struct pci_dev *pdev = adapter->pdev; | |
566 | ||
567 | /* PCI config space info */ | |
568 | ||
569 | hw->vendor_id = pdev->vendor; | |
570 | hw->device_id = pdev->device; | |
571 | hw->subsystem_vendor_id = pdev->subsystem_vendor; | |
572 | hw->subsystem_id = pdev->subsystem_device; | |
573 | ||
1da177e4 | 574 | hw->max_frame_size = netdev->mtu + ENET_HEADER_SIZE + ENET_FCS_LENGTH; |
3f3dc0dd | 575 | adapter->rx_buffer_len = hw->max_frame_size; |
1da177e4 LT |
576 | |
577 | if((hw->device_id == IXGB_DEVICE_ID_82597EX) | |
940829e2 AK |
578 | || (hw->device_id == IXGB_DEVICE_ID_82597EX_CX4) |
579 | || (hw->device_id == IXGB_DEVICE_ID_82597EX_LR) | |
580 | || (hw->device_id == IXGB_DEVICE_ID_82597EX_SR)) | |
1da177e4 LT |
581 | hw->mac_type = ixgb_82597; |
582 | else { | |
583 | /* should never have loaded on this device */ | |
ec9c3f5d | 584 | DPRINTK(PROBE, ERR, "unsupported device id\n"); |
1da177e4 LT |
585 | } |
586 | ||
587 | /* enable flow control to be programmed */ | |
588 | hw->fc.send_xon = 1; | |
589 | ||
590 | atomic_set(&adapter->irq_sem, 1); | |
591 | spin_lock_init(&adapter->tx_lock); | |
592 | ||
593 | return 0; | |
594 | } | |
595 | ||
596 | /** | |
597 | * ixgb_open - Called when a network interface is made active | |
598 | * @netdev: network interface device structure | |
599 | * | |
600 | * Returns 0 on success, negative value on failure | |
601 | * | |
602 | * The open entry point is called when a network interface is made | |
603 | * active by the system (IFF_UP). At this point all resources needed | |
604 | * for transmit and receive operations are allocated, the interrupt | |
605 | * handler is registered with the OS, the watchdog timer is started, | |
606 | * and the stack is notified that the interface is ready. | |
607 | **/ | |
608 | ||
609 | static int | |
610 | ixgb_open(struct net_device *netdev) | |
611 | { | |
8908c6cd | 612 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
613 | int err; |
614 | ||
615 | /* allocate transmit descriptors */ | |
616 | ||
617 | if((err = ixgb_setup_tx_resources(adapter))) | |
618 | goto err_setup_tx; | |
619 | ||
620 | /* allocate receive descriptors */ | |
621 | ||
622 | if((err = ixgb_setup_rx_resources(adapter))) | |
623 | goto err_setup_rx; | |
624 | ||
625 | if((err = ixgb_up(adapter))) | |
626 | goto err_up; | |
627 | ||
628 | return 0; | |
629 | ||
630 | err_up: | |
631 | ixgb_free_rx_resources(adapter); | |
632 | err_setup_rx: | |
633 | ixgb_free_tx_resources(adapter); | |
634 | err_setup_tx: | |
635 | ixgb_reset(adapter); | |
636 | ||
637 | return err; | |
638 | } | |
639 | ||
640 | /** | |
641 | * ixgb_close - Disables a network interface | |
642 | * @netdev: network interface device structure | |
643 | * | |
644 | * Returns 0, this is not allowed to fail | |
645 | * | |
646 | * The close entry point is called when an interface is de-activated | |
647 | * by the OS. The hardware is still under the drivers control, but | |
648 | * needs to be disabled. A global MAC reset is issued to stop the | |
649 | * hardware, and all transmit and receive resources are freed. | |
650 | **/ | |
651 | ||
652 | static int | |
653 | ixgb_close(struct net_device *netdev) | |
654 | { | |
8908c6cd | 655 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
656 | |
657 | ixgb_down(adapter, TRUE); | |
658 | ||
659 | ixgb_free_tx_resources(adapter); | |
660 | ixgb_free_rx_resources(adapter); | |
661 | ||
662 | return 0; | |
663 | } | |
664 | ||
665 | /** | |
666 | * ixgb_setup_tx_resources - allocate Tx resources (Descriptors) | |
667 | * @adapter: board private structure | |
668 | * | |
669 | * Return 0 on success, negative on failure | |
670 | **/ | |
671 | ||
672 | int | |
673 | ixgb_setup_tx_resources(struct ixgb_adapter *adapter) | |
674 | { | |
675 | struct ixgb_desc_ring *txdr = &adapter->tx_ring; | |
676 | struct pci_dev *pdev = adapter->pdev; | |
677 | int size; | |
678 | ||
679 | size = sizeof(struct ixgb_buffer) * txdr->count; | |
680 | txdr->buffer_info = vmalloc(size); | |
681 | if(!txdr->buffer_info) { | |
ec9c3f5d AK |
682 | DPRINTK(PROBE, ERR, |
683 | "Unable to allocate transmit descriptor ring memory\n"); | |
1da177e4 LT |
684 | return -ENOMEM; |
685 | } | |
686 | memset(txdr->buffer_info, 0, size); | |
687 | ||
688 | /* round up to nearest 4K */ | |
689 | ||
690 | txdr->size = txdr->count * sizeof(struct ixgb_tx_desc); | |
691 | IXGB_ROUNDUP(txdr->size, 4096); | |
692 | ||
693 | txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma); | |
694 | if(!txdr->desc) { | |
695 | vfree(txdr->buffer_info); | |
ec9c3f5d AK |
696 | DPRINTK(PROBE, ERR, |
697 | "Unable to allocate transmit descriptor memory\n"); | |
1da177e4 LT |
698 | return -ENOMEM; |
699 | } | |
700 | memset(txdr->desc, 0, txdr->size); | |
701 | ||
702 | txdr->next_to_use = 0; | |
703 | txdr->next_to_clean = 0; | |
704 | ||
705 | return 0; | |
706 | } | |
707 | ||
708 | /** | |
709 | * ixgb_configure_tx - Configure 82597 Transmit Unit after Reset. | |
710 | * @adapter: board private structure | |
711 | * | |
712 | * Configure the Tx unit of the MAC after a reset. | |
713 | **/ | |
714 | ||
715 | static void | |
716 | ixgb_configure_tx(struct ixgb_adapter *adapter) | |
717 | { | |
718 | uint64_t tdba = adapter->tx_ring.dma; | |
719 | uint32_t tdlen = adapter->tx_ring.count * sizeof(struct ixgb_tx_desc); | |
720 | uint32_t tctl; | |
721 | struct ixgb_hw *hw = &adapter->hw; | |
722 | ||
723 | /* Setup the Base and Length of the Tx Descriptor Ring | |
724 | * tx_ring.dma can be either a 32 or 64 bit value | |
725 | */ | |
726 | ||
727 | IXGB_WRITE_REG(hw, TDBAL, (tdba & 0x00000000ffffffffULL)); | |
728 | IXGB_WRITE_REG(hw, TDBAH, (tdba >> 32)); | |
729 | ||
730 | IXGB_WRITE_REG(hw, TDLEN, tdlen); | |
731 | ||
732 | /* Setup the HW Tx Head and Tail descriptor pointers */ | |
733 | ||
734 | IXGB_WRITE_REG(hw, TDH, 0); | |
735 | IXGB_WRITE_REG(hw, TDT, 0); | |
736 | ||
737 | /* don't set up txdctl, it induces performance problems if configured | |
738 | * incorrectly */ | |
739 | /* Set the Tx Interrupt Delay register */ | |
740 | ||
741 | IXGB_WRITE_REG(hw, TIDV, adapter->tx_int_delay); | |
742 | ||
743 | /* Program the Transmit Control Register */ | |
744 | ||
745 | tctl = IXGB_TCTL_TCE | IXGB_TCTL_TXEN | IXGB_TCTL_TPDE; | |
746 | IXGB_WRITE_REG(hw, TCTL, tctl); | |
747 | ||
748 | /* Setup Transmit Descriptor Settings for this adapter */ | |
749 | adapter->tx_cmd_type = | |
750 | IXGB_TX_DESC_TYPE | |
751 | | (adapter->tx_int_delay_enable ? IXGB_TX_DESC_CMD_IDE : 0); | |
752 | } | |
753 | ||
754 | /** | |
755 | * ixgb_setup_rx_resources - allocate Rx resources (Descriptors) | |
756 | * @adapter: board private structure | |
757 | * | |
758 | * Returns 0 on success, negative on failure | |
759 | **/ | |
760 | ||
761 | int | |
762 | ixgb_setup_rx_resources(struct ixgb_adapter *adapter) | |
763 | { | |
764 | struct ixgb_desc_ring *rxdr = &adapter->rx_ring; | |
765 | struct pci_dev *pdev = adapter->pdev; | |
766 | int size; | |
767 | ||
768 | size = sizeof(struct ixgb_buffer) * rxdr->count; | |
769 | rxdr->buffer_info = vmalloc(size); | |
770 | if(!rxdr->buffer_info) { | |
ec9c3f5d AK |
771 | DPRINTK(PROBE, ERR, |
772 | "Unable to allocate receive descriptor ring\n"); | |
1da177e4 LT |
773 | return -ENOMEM; |
774 | } | |
775 | memset(rxdr->buffer_info, 0, size); | |
776 | ||
777 | /* Round up to nearest 4K */ | |
778 | ||
779 | rxdr->size = rxdr->count * sizeof(struct ixgb_rx_desc); | |
780 | IXGB_ROUNDUP(rxdr->size, 4096); | |
781 | ||
782 | rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma); | |
783 | ||
784 | if(!rxdr->desc) { | |
785 | vfree(rxdr->buffer_info); | |
ec9c3f5d AK |
786 | DPRINTK(PROBE, ERR, |
787 | "Unable to allocate receive descriptors\n"); | |
1da177e4 LT |
788 | return -ENOMEM; |
789 | } | |
790 | memset(rxdr->desc, 0, rxdr->size); | |
791 | ||
792 | rxdr->next_to_clean = 0; | |
793 | rxdr->next_to_use = 0; | |
794 | ||
795 | return 0; | |
796 | } | |
797 | ||
798 | /** | |
799 | * ixgb_setup_rctl - configure the receive control register | |
800 | * @adapter: Board private structure | |
801 | **/ | |
802 | ||
803 | static void | |
804 | ixgb_setup_rctl(struct ixgb_adapter *adapter) | |
805 | { | |
806 | uint32_t rctl; | |
807 | ||
808 | rctl = IXGB_READ_REG(&adapter->hw, RCTL); | |
809 | ||
810 | rctl &= ~(3 << IXGB_RCTL_MO_SHIFT); | |
811 | ||
812 | rctl |= | |
813 | IXGB_RCTL_BAM | IXGB_RCTL_RDMTS_1_2 | | |
814 | IXGB_RCTL_RXEN | IXGB_RCTL_CFF | | |
815 | (adapter->hw.mc_filter_type << IXGB_RCTL_MO_SHIFT); | |
816 | ||
817 | rctl |= IXGB_RCTL_SECRC; | |
818 | ||
3f3dc0dd | 819 | if (adapter->rx_buffer_len <= IXGB_RXBUFFER_2048) |
1da177e4 | 820 | rctl |= IXGB_RCTL_BSIZE_2048; |
3f3dc0dd | 821 | else if (adapter->rx_buffer_len <= IXGB_RXBUFFER_4096) |
1da177e4 | 822 | rctl |= IXGB_RCTL_BSIZE_4096; |
3f3dc0dd | 823 | else if (adapter->rx_buffer_len <= IXGB_RXBUFFER_8192) |
1da177e4 | 824 | rctl |= IXGB_RCTL_BSIZE_8192; |
3f3dc0dd | 825 | else if (adapter->rx_buffer_len <= IXGB_RXBUFFER_16384) |
1da177e4 | 826 | rctl |= IXGB_RCTL_BSIZE_16384; |
1da177e4 LT |
827 | |
828 | IXGB_WRITE_REG(&adapter->hw, RCTL, rctl); | |
829 | } | |
830 | ||
831 | /** | |
832 | * ixgb_configure_rx - Configure 82597 Receive Unit after Reset. | |
833 | * @adapter: board private structure | |
834 | * | |
835 | * Configure the Rx unit of the MAC after a reset. | |
836 | **/ | |
837 | ||
838 | static void | |
839 | ixgb_configure_rx(struct ixgb_adapter *adapter) | |
840 | { | |
841 | uint64_t rdba = adapter->rx_ring.dma; | |
842 | uint32_t rdlen = adapter->rx_ring.count * sizeof(struct ixgb_rx_desc); | |
843 | struct ixgb_hw *hw = &adapter->hw; | |
844 | uint32_t rctl; | |
845 | uint32_t rxcsum; | |
846 | uint32_t rxdctl; | |
847 | ||
848 | /* make sure receives are disabled while setting up the descriptors */ | |
849 | ||
850 | rctl = IXGB_READ_REG(hw, RCTL); | |
851 | IXGB_WRITE_REG(hw, RCTL, rctl & ~IXGB_RCTL_RXEN); | |
852 | ||
853 | /* set the Receive Delay Timer Register */ | |
854 | ||
855 | IXGB_WRITE_REG(hw, RDTR, adapter->rx_int_delay); | |
856 | ||
857 | /* Setup the Base and Length of the Rx Descriptor Ring */ | |
858 | ||
859 | IXGB_WRITE_REG(hw, RDBAL, (rdba & 0x00000000ffffffffULL)); | |
860 | IXGB_WRITE_REG(hw, RDBAH, (rdba >> 32)); | |
861 | ||
862 | IXGB_WRITE_REG(hw, RDLEN, rdlen); | |
863 | ||
864 | /* Setup the HW Rx Head and Tail Descriptor Pointers */ | |
865 | IXGB_WRITE_REG(hw, RDH, 0); | |
866 | IXGB_WRITE_REG(hw, RDT, 0); | |
867 | ||
868 | /* set up pre-fetching of receive buffers so we get some before we | |
869 | * run out (default hardware behavior is to run out before fetching | |
870 | * more). This sets up to fetch if HTHRESH rx descriptors are avail | |
871 | * and the descriptors in hw cache are below PTHRESH. This avoids | |
872 | * the hardware behavior of fetching <=512 descriptors in a single | |
873 | * burst that pre-empts all other activity, usually causing fifo | |
874 | * overflows. */ | |
875 | /* use WTHRESH to burst write 16 descriptors or burst when RXT0 */ | |
876 | rxdctl = RXDCTL_WTHRESH_DEFAULT << IXGB_RXDCTL_WTHRESH_SHIFT | | |
877 | RXDCTL_HTHRESH_DEFAULT << IXGB_RXDCTL_HTHRESH_SHIFT | | |
878 | RXDCTL_PTHRESH_DEFAULT << IXGB_RXDCTL_PTHRESH_SHIFT; | |
879 | IXGB_WRITE_REG(hw, RXDCTL, rxdctl); | |
880 | ||
881 | /* Enable Receive Checksum Offload for TCP and UDP */ | |
882 | if(adapter->rx_csum == TRUE) { | |
883 | rxcsum = IXGB_READ_REG(hw, RXCSUM); | |
884 | rxcsum |= IXGB_RXCSUM_TUOFL; | |
885 | IXGB_WRITE_REG(hw, RXCSUM, rxcsum); | |
886 | } | |
887 | ||
888 | /* Enable Receives */ | |
889 | ||
890 | IXGB_WRITE_REG(hw, RCTL, rctl); | |
891 | } | |
892 | ||
893 | /** | |
894 | * ixgb_free_tx_resources - Free Tx Resources | |
895 | * @adapter: board private structure | |
896 | * | |
897 | * Free all transmit software resources | |
898 | **/ | |
899 | ||
900 | void | |
901 | ixgb_free_tx_resources(struct ixgb_adapter *adapter) | |
902 | { | |
903 | struct pci_dev *pdev = adapter->pdev; | |
904 | ||
905 | ixgb_clean_tx_ring(adapter); | |
906 | ||
907 | vfree(adapter->tx_ring.buffer_info); | |
908 | adapter->tx_ring.buffer_info = NULL; | |
909 | ||
910 | pci_free_consistent(pdev, adapter->tx_ring.size, | |
911 | adapter->tx_ring.desc, adapter->tx_ring.dma); | |
912 | ||
913 | adapter->tx_ring.desc = NULL; | |
914 | } | |
915 | ||
235949d1 | 916 | static void |
1da177e4 LT |
917 | ixgb_unmap_and_free_tx_resource(struct ixgb_adapter *adapter, |
918 | struct ixgb_buffer *buffer_info) | |
919 | { | |
920 | struct pci_dev *pdev = adapter->pdev; | |
1dfdd7df AK |
921 | |
922 | if (buffer_info->dma) | |
923 | pci_unmap_page(pdev, buffer_info->dma, buffer_info->length, | |
924 | PCI_DMA_TODEVICE); | |
925 | ||
926 | if (buffer_info->skb) | |
1da177e4 | 927 | dev_kfree_skb_any(buffer_info->skb); |
1dfdd7df AK |
928 | |
929 | buffer_info->skb = NULL; | |
930 | buffer_info->dma = 0; | |
931 | buffer_info->time_stamp = 0; | |
932 | /* these fields must always be initialized in tx | |
933 | * buffer_info->length = 0; | |
934 | * buffer_info->next_to_watch = 0; */ | |
1da177e4 LT |
935 | } |
936 | ||
937 | /** | |
938 | * ixgb_clean_tx_ring - Free Tx Buffers | |
939 | * @adapter: board private structure | |
940 | **/ | |
941 | ||
942 | static void | |
943 | ixgb_clean_tx_ring(struct ixgb_adapter *adapter) | |
944 | { | |
945 | struct ixgb_desc_ring *tx_ring = &adapter->tx_ring; | |
946 | struct ixgb_buffer *buffer_info; | |
947 | unsigned long size; | |
948 | unsigned int i; | |
949 | ||
950 | /* Free all the Tx ring sk_buffs */ | |
951 | ||
952 | for(i = 0; i < tx_ring->count; i++) { | |
953 | buffer_info = &tx_ring->buffer_info[i]; | |
954 | ixgb_unmap_and_free_tx_resource(adapter, buffer_info); | |
955 | } | |
956 | ||
957 | size = sizeof(struct ixgb_buffer) * tx_ring->count; | |
958 | memset(tx_ring->buffer_info, 0, size); | |
959 | ||
960 | /* Zero out the descriptor ring */ | |
961 | ||
962 | memset(tx_ring->desc, 0, tx_ring->size); | |
963 | ||
964 | tx_ring->next_to_use = 0; | |
965 | tx_ring->next_to_clean = 0; | |
966 | ||
967 | IXGB_WRITE_REG(&adapter->hw, TDH, 0); | |
968 | IXGB_WRITE_REG(&adapter->hw, TDT, 0); | |
969 | } | |
970 | ||
971 | /** | |
972 | * ixgb_free_rx_resources - Free Rx Resources | |
973 | * @adapter: board private structure | |
974 | * | |
975 | * Free all receive software resources | |
976 | **/ | |
977 | ||
978 | void | |
979 | ixgb_free_rx_resources(struct ixgb_adapter *adapter) | |
980 | { | |
981 | struct ixgb_desc_ring *rx_ring = &adapter->rx_ring; | |
982 | struct pci_dev *pdev = adapter->pdev; | |
983 | ||
984 | ixgb_clean_rx_ring(adapter); | |
985 | ||
986 | vfree(rx_ring->buffer_info); | |
987 | rx_ring->buffer_info = NULL; | |
988 | ||
989 | pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma); | |
990 | ||
991 | rx_ring->desc = NULL; | |
992 | } | |
993 | ||
994 | /** | |
995 | * ixgb_clean_rx_ring - Free Rx Buffers | |
996 | * @adapter: board private structure | |
997 | **/ | |
998 | ||
999 | static void | |
1000 | ixgb_clean_rx_ring(struct ixgb_adapter *adapter) | |
1001 | { | |
1002 | struct ixgb_desc_ring *rx_ring = &adapter->rx_ring; | |
1003 | struct ixgb_buffer *buffer_info; | |
1004 | struct pci_dev *pdev = adapter->pdev; | |
1005 | unsigned long size; | |
1006 | unsigned int i; | |
1007 | ||
1008 | /* Free all the Rx ring sk_buffs */ | |
1009 | ||
1010 | for(i = 0; i < rx_ring->count; i++) { | |
1011 | buffer_info = &rx_ring->buffer_info[i]; | |
1012 | if(buffer_info->skb) { | |
1013 | ||
1014 | pci_unmap_single(pdev, | |
1015 | buffer_info->dma, | |
1016 | buffer_info->length, | |
1017 | PCI_DMA_FROMDEVICE); | |
1018 | ||
1019 | dev_kfree_skb(buffer_info->skb); | |
1020 | ||
1021 | buffer_info->skb = NULL; | |
1022 | } | |
1023 | } | |
1024 | ||
1025 | size = sizeof(struct ixgb_buffer) * rx_ring->count; | |
1026 | memset(rx_ring->buffer_info, 0, size); | |
1027 | ||
1028 | /* Zero out the descriptor ring */ | |
1029 | ||
1030 | memset(rx_ring->desc, 0, rx_ring->size); | |
1031 | ||
1032 | rx_ring->next_to_clean = 0; | |
1033 | rx_ring->next_to_use = 0; | |
1034 | ||
1035 | IXGB_WRITE_REG(&adapter->hw, RDH, 0); | |
1036 | IXGB_WRITE_REG(&adapter->hw, RDT, 0); | |
1037 | } | |
1038 | ||
1039 | /** | |
1040 | * ixgb_set_mac - Change the Ethernet Address of the NIC | |
1041 | * @netdev: network interface device structure | |
1042 | * @p: pointer to an address structure | |
1043 | * | |
1044 | * Returns 0 on success, negative on failure | |
1045 | **/ | |
1046 | ||
1047 | static int | |
1048 | ixgb_set_mac(struct net_device *netdev, void *p) | |
1049 | { | |
8908c6cd | 1050 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
1051 | struct sockaddr *addr = p; |
1052 | ||
1053 | if(!is_valid_ether_addr(addr->sa_data)) | |
1054 | return -EADDRNOTAVAIL; | |
1055 | ||
1056 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
1057 | ||
1058 | ixgb_rar_set(&adapter->hw, addr->sa_data, 0); | |
1059 | ||
1060 | return 0; | |
1061 | } | |
1062 | ||
1063 | /** | |
1064 | * ixgb_set_multi - Multicast and Promiscuous mode set | |
1065 | * @netdev: network interface device structure | |
1066 | * | |
1067 | * The set_multi entry point is called whenever the multicast address | |
1068 | * list or the network interface flags are updated. This routine is | |
1069 | * responsible for configuring the hardware for proper multicast, | |
1070 | * promiscuous mode, and all-multi behavior. | |
1071 | **/ | |
1072 | ||
1073 | static void | |
1074 | ixgb_set_multi(struct net_device *netdev) | |
1075 | { | |
8908c6cd | 1076 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
1077 | struct ixgb_hw *hw = &adapter->hw; |
1078 | struct dev_mc_list *mc_ptr; | |
1079 | uint32_t rctl; | |
1080 | int i; | |
1081 | ||
1082 | /* Check for Promiscuous and All Multicast modes */ | |
1083 | ||
1084 | rctl = IXGB_READ_REG(hw, RCTL); | |
1085 | ||
1086 | if(netdev->flags & IFF_PROMISC) { | |
1087 | rctl |= (IXGB_RCTL_UPE | IXGB_RCTL_MPE); | |
1088 | } else if(netdev->flags & IFF_ALLMULTI) { | |
1089 | rctl |= IXGB_RCTL_MPE; | |
1090 | rctl &= ~IXGB_RCTL_UPE; | |
1091 | } else { | |
1092 | rctl &= ~(IXGB_RCTL_UPE | IXGB_RCTL_MPE); | |
1093 | } | |
1094 | ||
1095 | if(netdev->mc_count > IXGB_MAX_NUM_MULTICAST_ADDRESSES) { | |
1096 | rctl |= IXGB_RCTL_MPE; | |
1097 | IXGB_WRITE_REG(hw, RCTL, rctl); | |
1098 | } else { | |
1099 | uint8_t mta[netdev->mc_count * IXGB_ETH_LENGTH_OF_ADDRESS]; | |
1100 | ||
1101 | IXGB_WRITE_REG(hw, RCTL, rctl); | |
1102 | ||
1103 | for(i = 0, mc_ptr = netdev->mc_list; mc_ptr; | |
1104 | i++, mc_ptr = mc_ptr->next) | |
1105 | memcpy(&mta[i * IXGB_ETH_LENGTH_OF_ADDRESS], | |
1106 | mc_ptr->dmi_addr, IXGB_ETH_LENGTH_OF_ADDRESS); | |
1107 | ||
1108 | ixgb_mc_addr_list_update(hw, mta, netdev->mc_count, 0); | |
1109 | } | |
1110 | } | |
1111 | ||
1112 | /** | |
1113 | * ixgb_watchdog - Timer Call-back | |
1114 | * @data: pointer to netdev cast into an unsigned long | |
1115 | **/ | |
1116 | ||
1117 | static void | |
1118 | ixgb_watchdog(unsigned long data) | |
1119 | { | |
1120 | struct ixgb_adapter *adapter = (struct ixgb_adapter *)data; | |
1121 | struct net_device *netdev = adapter->netdev; | |
1122 | struct ixgb_desc_ring *txdr = &adapter->tx_ring; | |
1123 | ||
1124 | ixgb_check_for_link(&adapter->hw); | |
1125 | ||
1126 | if (ixgb_check_for_bad_link(&adapter->hw)) { | |
1127 | /* force the reset path */ | |
1128 | netif_stop_queue(netdev); | |
1129 | } | |
1130 | ||
1131 | if(adapter->hw.link_up) { | |
1132 | if(!netif_carrier_ok(netdev)) { | |
ec9c3f5d AK |
1133 | DPRINTK(LINK, INFO, |
1134 | "NIC Link is Up 10000 Mbps Full Duplex\n"); | |
1da177e4 LT |
1135 | adapter->link_speed = 10000; |
1136 | adapter->link_duplex = FULL_DUPLEX; | |
1137 | netif_carrier_on(netdev); | |
1138 | netif_wake_queue(netdev); | |
1139 | } | |
1140 | } else { | |
1141 | if(netif_carrier_ok(netdev)) { | |
1142 | adapter->link_speed = 0; | |
1143 | adapter->link_duplex = 0; | |
ec9c3f5d | 1144 | DPRINTK(LINK, INFO, "NIC Link is Down\n"); |
1da177e4 LT |
1145 | netif_carrier_off(netdev); |
1146 | netif_stop_queue(netdev); | |
1147 | ||
1148 | } | |
1149 | } | |
1150 | ||
1151 | ixgb_update_stats(adapter); | |
1152 | ||
1153 | if(!netif_carrier_ok(netdev)) { | |
1154 | if(IXGB_DESC_UNUSED(txdr) + 1 < txdr->count) { | |
1155 | /* We've lost link, so the controller stops DMA, | |
1156 | * but we've got queued Tx work that's never going | |
1157 | * to get done, so reset controller to flush Tx. | |
1158 | * (Do the reset outside of interrupt context). */ | |
1159 | schedule_work(&adapter->tx_timeout_task); | |
1160 | } | |
1161 | } | |
1162 | ||
1163 | /* Force detection of hung controller every watchdog period */ | |
1164 | adapter->detect_tx_hung = TRUE; | |
1165 | ||
1166 | /* generate an interrupt to force clean up of any stragglers */ | |
1167 | IXGB_WRITE_REG(&adapter->hw, ICS, IXGB_INT_TXDW); | |
1168 | ||
1169 | /* Reset the timer */ | |
1170 | mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ); | |
1171 | } | |
1172 | ||
1173 | #define IXGB_TX_FLAGS_CSUM 0x00000001 | |
1174 | #define IXGB_TX_FLAGS_VLAN 0x00000002 | |
1175 | #define IXGB_TX_FLAGS_TSO 0x00000004 | |
1176 | ||
235949d1 | 1177 | static int |
1da177e4 LT |
1178 | ixgb_tso(struct ixgb_adapter *adapter, struct sk_buff *skb) |
1179 | { | |
1180 | #ifdef NETIF_F_TSO | |
1181 | struct ixgb_context_desc *context_desc; | |
1182 | unsigned int i; | |
1183 | uint8_t ipcss, ipcso, tucss, tucso, hdr_len; | |
1184 | uint16_t ipcse, tucse, mss; | |
1185 | int err; | |
1186 | ||
89114afd | 1187 | if (likely(skb_is_gso(skb))) { |
adc54139 | 1188 | struct ixgb_buffer *buffer_info; |
1da177e4 LT |
1189 | if (skb_header_cloned(skb)) { |
1190 | err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); | |
1191 | if (err) | |
1192 | return err; | |
1193 | } | |
1194 | ||
1195 | hdr_len = ((skb->h.raw - skb->data) + (skb->h.th->doff << 2)); | |
7967168c | 1196 | mss = skb_shinfo(skb)->gso_size; |
1da177e4 LT |
1197 | skb->nh.iph->tot_len = 0; |
1198 | skb->nh.iph->check = 0; | |
1199 | skb->h.th->check = ~csum_tcpudp_magic(skb->nh.iph->saddr, | |
1200 | skb->nh.iph->daddr, | |
1201 | 0, IPPROTO_TCP, 0); | |
1202 | ipcss = skb->nh.raw - skb->data; | |
1203 | ipcso = (void *)&(skb->nh.iph->check) - (void *)skb->data; | |
1204 | ipcse = skb->h.raw - skb->data - 1; | |
1205 | tucss = skb->h.raw - skb->data; | |
1206 | tucso = (void *)&(skb->h.th->check) - (void *)skb->data; | |
1207 | tucse = 0; | |
1208 | ||
1209 | i = adapter->tx_ring.next_to_use; | |
1210 | context_desc = IXGB_CONTEXT_DESC(adapter->tx_ring, i); | |
adc54139 JB |
1211 | buffer_info = &adapter->tx_ring.buffer_info[i]; |
1212 | WARN_ON(buffer_info->dma != 0); | |
1da177e4 LT |
1213 | |
1214 | context_desc->ipcss = ipcss; | |
1215 | context_desc->ipcso = ipcso; | |
1216 | context_desc->ipcse = cpu_to_le16(ipcse); | |
1217 | context_desc->tucss = tucss; | |
1218 | context_desc->tucso = tucso; | |
1219 | context_desc->tucse = cpu_to_le16(tucse); | |
1220 | context_desc->mss = cpu_to_le16(mss); | |
1221 | context_desc->hdr_len = hdr_len; | |
1222 | context_desc->status = 0; | |
1223 | context_desc->cmd_type_len = cpu_to_le32( | |
1224 | IXGB_CONTEXT_DESC_TYPE | |
1225 | | IXGB_CONTEXT_DESC_CMD_TSE | |
1226 | | IXGB_CONTEXT_DESC_CMD_IP | |
1227 | | IXGB_CONTEXT_DESC_CMD_TCP | |
1da177e4 LT |
1228 | | IXGB_CONTEXT_DESC_CMD_IDE |
1229 | | (skb->len - (hdr_len))); | |
1230 | ||
06c2f9ec | 1231 | |
1da177e4 LT |
1232 | if(++i == adapter->tx_ring.count) i = 0; |
1233 | adapter->tx_ring.next_to_use = i; | |
1234 | ||
1235 | return 1; | |
1236 | } | |
1237 | #endif | |
1238 | ||
1239 | return 0; | |
1240 | } | |
1241 | ||
235949d1 | 1242 | static boolean_t |
1da177e4 LT |
1243 | ixgb_tx_csum(struct ixgb_adapter *adapter, struct sk_buff *skb) |
1244 | { | |
1245 | struct ixgb_context_desc *context_desc; | |
1246 | unsigned int i; | |
1247 | uint8_t css, cso; | |
1248 | ||
84fa7933 | 1249 | if(likely(skb->ip_summed == CHECKSUM_PARTIAL)) { |
adc54139 | 1250 | struct ixgb_buffer *buffer_info; |
1da177e4 LT |
1251 | css = skb->h.raw - skb->data; |
1252 | cso = (skb->h.raw + skb->csum) - skb->data; | |
1253 | ||
1254 | i = adapter->tx_ring.next_to_use; | |
1255 | context_desc = IXGB_CONTEXT_DESC(adapter->tx_ring, i); | |
adc54139 JB |
1256 | buffer_info = &adapter->tx_ring.buffer_info[i]; |
1257 | WARN_ON(buffer_info->dma != 0); | |
1da177e4 LT |
1258 | |
1259 | context_desc->tucss = css; | |
1260 | context_desc->tucso = cso; | |
1261 | context_desc->tucse = 0; | |
1262 | /* zero out any previously existing data in one instruction */ | |
1263 | *(uint32_t *)&(context_desc->ipcss) = 0; | |
1264 | context_desc->status = 0; | |
1265 | context_desc->hdr_len = 0; | |
1266 | context_desc->mss = 0; | |
1267 | context_desc->cmd_type_len = | |
1268 | cpu_to_le32(IXGB_CONTEXT_DESC_TYPE | |
06c2f9ec | 1269 | | IXGB_TX_DESC_CMD_IDE); |
1da177e4 LT |
1270 | |
1271 | if(++i == adapter->tx_ring.count) i = 0; | |
1272 | adapter->tx_ring.next_to_use = i; | |
1273 | ||
1274 | return TRUE; | |
1275 | } | |
1276 | ||
1277 | return FALSE; | |
1278 | } | |
1279 | ||
1280 | #define IXGB_MAX_TXD_PWR 14 | |
1281 | #define IXGB_MAX_DATA_PER_TXD (1<<IXGB_MAX_TXD_PWR) | |
1282 | ||
235949d1 | 1283 | static int |
1da177e4 LT |
1284 | ixgb_tx_map(struct ixgb_adapter *adapter, struct sk_buff *skb, |
1285 | unsigned int first) | |
1286 | { | |
1287 | struct ixgb_desc_ring *tx_ring = &adapter->tx_ring; | |
1288 | struct ixgb_buffer *buffer_info; | |
1289 | int len = skb->len; | |
1290 | unsigned int offset = 0, size, count = 0, i; | |
1291 | ||
1292 | unsigned int nr_frags = skb_shinfo(skb)->nr_frags; | |
1293 | unsigned int f; | |
ac79c82e | 1294 | |
1da177e4 LT |
1295 | len -= skb->data_len; |
1296 | ||
1297 | i = tx_ring->next_to_use; | |
1298 | ||
1299 | while(len) { | |
1300 | buffer_info = &tx_ring->buffer_info[i]; | |
709cf018 | 1301 | size = min(len, IXGB_MAX_DATA_PER_TXD); |
1da177e4 | 1302 | buffer_info->length = size; |
adc54139 | 1303 | WARN_ON(buffer_info->dma != 0); |
1da177e4 LT |
1304 | buffer_info->dma = |
1305 | pci_map_single(adapter->pdev, | |
1306 | skb->data + offset, | |
1307 | size, | |
1308 | PCI_DMA_TODEVICE); | |
1309 | buffer_info->time_stamp = jiffies; | |
1dfdd7df | 1310 | buffer_info->next_to_watch = 0; |
1da177e4 LT |
1311 | |
1312 | len -= size; | |
1313 | offset += size; | |
1314 | count++; | |
1315 | if(++i == tx_ring->count) i = 0; | |
1316 | } | |
1317 | ||
1318 | for(f = 0; f < nr_frags; f++) { | |
1319 | struct skb_frag_struct *frag; | |
1320 | ||
1321 | frag = &skb_shinfo(skb)->frags[f]; | |
1322 | len = frag->size; | |
1323 | offset = 0; | |
1324 | ||
1325 | while(len) { | |
1326 | buffer_info = &tx_ring->buffer_info[i]; | |
709cf018 | 1327 | size = min(len, IXGB_MAX_DATA_PER_TXD); |
1da177e4 LT |
1328 | buffer_info->length = size; |
1329 | buffer_info->dma = | |
1330 | pci_map_page(adapter->pdev, | |
1331 | frag->page, | |
1332 | frag->page_offset + offset, | |
1333 | size, | |
1334 | PCI_DMA_TODEVICE); | |
1335 | buffer_info->time_stamp = jiffies; | |
1dfdd7df | 1336 | buffer_info->next_to_watch = 0; |
1da177e4 LT |
1337 | |
1338 | len -= size; | |
1339 | offset += size; | |
1340 | count++; | |
1341 | if(++i == tx_ring->count) i = 0; | |
1342 | } | |
1343 | } | |
1344 | i = (i == 0) ? tx_ring->count - 1 : i - 1; | |
1345 | tx_ring->buffer_info[i].skb = skb; | |
1346 | tx_ring->buffer_info[first].next_to_watch = i; | |
1347 | ||
1348 | return count; | |
1349 | } | |
1350 | ||
235949d1 | 1351 | static void |
1da177e4 LT |
1352 | ixgb_tx_queue(struct ixgb_adapter *adapter, int count, int vlan_id,int tx_flags) |
1353 | { | |
1354 | struct ixgb_desc_ring *tx_ring = &adapter->tx_ring; | |
1355 | struct ixgb_tx_desc *tx_desc = NULL; | |
1356 | struct ixgb_buffer *buffer_info; | |
1357 | uint32_t cmd_type_len = adapter->tx_cmd_type; | |
1358 | uint8_t status = 0; | |
1359 | uint8_t popts = 0; | |
1360 | unsigned int i; | |
1361 | ||
1362 | if(tx_flags & IXGB_TX_FLAGS_TSO) { | |
1363 | cmd_type_len |= IXGB_TX_DESC_CMD_TSE; | |
1364 | popts |= (IXGB_TX_DESC_POPTS_IXSM | IXGB_TX_DESC_POPTS_TXSM); | |
1365 | } | |
1366 | ||
1367 | if(tx_flags & IXGB_TX_FLAGS_CSUM) | |
1368 | popts |= IXGB_TX_DESC_POPTS_TXSM; | |
1369 | ||
1370 | if(tx_flags & IXGB_TX_FLAGS_VLAN) { | |
1371 | cmd_type_len |= IXGB_TX_DESC_CMD_VLE; | |
1372 | } | |
1373 | ||
1374 | i = tx_ring->next_to_use; | |
1375 | ||
1376 | while(count--) { | |
1377 | buffer_info = &tx_ring->buffer_info[i]; | |
1378 | tx_desc = IXGB_TX_DESC(*tx_ring, i); | |
1379 | tx_desc->buff_addr = cpu_to_le64(buffer_info->dma); | |
1380 | tx_desc->cmd_type_len = | |
1381 | cpu_to_le32(cmd_type_len | buffer_info->length); | |
1382 | tx_desc->status = status; | |
1383 | tx_desc->popts = popts; | |
1384 | tx_desc->vlan = cpu_to_le16(vlan_id); | |
1385 | ||
1386 | if(++i == tx_ring->count) i = 0; | |
1387 | } | |
1388 | ||
1389 | tx_desc->cmd_type_len |= cpu_to_le32(IXGB_TX_DESC_CMD_EOP | |
1390 | | IXGB_TX_DESC_CMD_RS ); | |
1391 | ||
1392 | /* Force memory writes to complete before letting h/w | |
1393 | * know there are new descriptors to fetch. (Only | |
1394 | * applicable for weak-ordered memory model archs, | |
1395 | * such as IA-64). */ | |
1396 | wmb(); | |
1397 | ||
1398 | tx_ring->next_to_use = i; | |
1399 | IXGB_WRITE_REG(&adapter->hw, TDT, i); | |
1400 | } | |
1401 | ||
1402 | /* Tx Descriptors needed, worst case */ | |
1403 | #define TXD_USE_COUNT(S) (((S) >> IXGB_MAX_TXD_PWR) + \ | |
1404 | (((S) & (IXGB_MAX_DATA_PER_TXD - 1)) ? 1 : 0)) | |
1405 | #define DESC_NEEDED TXD_USE_COUNT(IXGB_MAX_DATA_PER_TXD) + \ | |
989316dd | 1406 | MAX_SKB_FRAGS * TXD_USE_COUNT(PAGE_SIZE) + 1 |
1da177e4 LT |
1407 | |
1408 | static int | |
1409 | ixgb_xmit_frame(struct sk_buff *skb, struct net_device *netdev) | |
1410 | { | |
8908c6cd | 1411 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
1412 | unsigned int first; |
1413 | unsigned int tx_flags = 0; | |
1414 | unsigned long flags; | |
1415 | int vlan_id = 0; | |
1416 | int tso; | |
1417 | ||
1418 | if(skb->len <= 0) { | |
1419 | dev_kfree_skb_any(skb); | |
1420 | return 0; | |
1421 | } | |
1422 | ||
f017f14b AK |
1423 | #ifdef NETIF_F_LLTX |
1424 | local_irq_save(flags); | |
1425 | if (!spin_trylock(&adapter->tx_lock)) { | |
1426 | /* Collision - tell upper layer to requeue */ | |
1427 | local_irq_restore(flags); | |
1428 | return NETDEV_TX_LOCKED; | |
1429 | } | |
1430 | #else | |
1da177e4 | 1431 | spin_lock_irqsave(&adapter->tx_lock, flags); |
f017f14b AK |
1432 | #endif |
1433 | ||
1da177e4 LT |
1434 | if(unlikely(IXGB_DESC_UNUSED(&adapter->tx_ring) < DESC_NEEDED)) { |
1435 | netif_stop_queue(netdev); | |
1436 | spin_unlock_irqrestore(&adapter->tx_lock, flags); | |
f017f14b | 1437 | return NETDEV_TX_BUSY; |
1da177e4 | 1438 | } |
f017f14b AK |
1439 | |
1440 | #ifndef NETIF_F_LLTX | |
1da177e4 | 1441 | spin_unlock_irqrestore(&adapter->tx_lock, flags); |
f017f14b | 1442 | #endif |
1da177e4 LT |
1443 | |
1444 | if(adapter->vlgrp && vlan_tx_tag_present(skb)) { | |
1445 | tx_flags |= IXGB_TX_FLAGS_VLAN; | |
1446 | vlan_id = vlan_tx_tag_get(skb); | |
1447 | } | |
1448 | ||
1449 | first = adapter->tx_ring.next_to_use; | |
1450 | ||
1451 | tso = ixgb_tso(adapter, skb); | |
1452 | if (tso < 0) { | |
1453 | dev_kfree_skb_any(skb); | |
f017f14b AK |
1454 | #ifdef NETIF_F_LLTX |
1455 | spin_unlock_irqrestore(&adapter->tx_lock, flags); | |
1456 | #endif | |
1da177e4 LT |
1457 | return NETDEV_TX_OK; |
1458 | } | |
1459 | ||
96f9c2e2 | 1460 | if (likely(tso)) |
1da177e4 LT |
1461 | tx_flags |= IXGB_TX_FLAGS_TSO; |
1462 | else if(ixgb_tx_csum(adapter, skb)) | |
1463 | tx_flags |= IXGB_TX_FLAGS_CSUM; | |
1464 | ||
1465 | ixgb_tx_queue(adapter, ixgb_tx_map(adapter, skb, first), vlan_id, | |
1466 | tx_flags); | |
1467 | ||
1468 | netdev->trans_start = jiffies; | |
1469 | ||
f017f14b AK |
1470 | #ifdef NETIF_F_LLTX |
1471 | /* Make sure there is space in the ring for the next send. */ | |
1472 | if(unlikely(IXGB_DESC_UNUSED(&adapter->tx_ring) < DESC_NEEDED)) | |
1473 | netif_stop_queue(netdev); | |
1474 | ||
1475 | spin_unlock_irqrestore(&adapter->tx_lock, flags); | |
1476 | ||
1477 | #endif | |
1478 | return NETDEV_TX_OK; | |
1da177e4 LT |
1479 | } |
1480 | ||
1481 | /** | |
1482 | * ixgb_tx_timeout - Respond to a Tx Hang | |
1483 | * @netdev: network interface device structure | |
1484 | **/ | |
1485 | ||
1486 | static void | |
1487 | ixgb_tx_timeout(struct net_device *netdev) | |
1488 | { | |
8908c6cd | 1489 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
1490 | |
1491 | /* Do the reset outside of interrupt context */ | |
1492 | schedule_work(&adapter->tx_timeout_task); | |
1493 | } | |
1494 | ||
1495 | static void | |
1496 | ixgb_tx_timeout_task(struct net_device *netdev) | |
1497 | { | |
8908c6cd | 1498 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
1da177e4 | 1499 | |
9b8118df | 1500 | adapter->tx_timeout_count++; |
1da177e4 LT |
1501 | ixgb_down(adapter, TRUE); |
1502 | ixgb_up(adapter); | |
1503 | } | |
1504 | ||
1505 | /** | |
1506 | * ixgb_get_stats - Get System Network Statistics | |
1507 | * @netdev: network interface device structure | |
1508 | * | |
1509 | * Returns the address of the device statistics structure. | |
1510 | * The statistics are actually updated from the timer callback. | |
1511 | **/ | |
1512 | ||
1513 | static struct net_device_stats * | |
1514 | ixgb_get_stats(struct net_device *netdev) | |
1515 | { | |
8908c6cd | 1516 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
1517 | |
1518 | return &adapter->net_stats; | |
1519 | } | |
1520 | ||
1521 | /** | |
1522 | * ixgb_change_mtu - Change the Maximum Transfer Unit | |
1523 | * @netdev: network interface device structure | |
1524 | * @new_mtu: new value for maximum frame size | |
1525 | * | |
1526 | * Returns 0 on success, negative on failure | |
1527 | **/ | |
1528 | ||
1529 | static int | |
1530 | ixgb_change_mtu(struct net_device *netdev, int new_mtu) | |
1531 | { | |
8908c6cd | 1532 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
1533 | int max_frame = new_mtu + ENET_HEADER_SIZE + ENET_FCS_LENGTH; |
1534 | int old_max_frame = netdev->mtu + ENET_HEADER_SIZE + ENET_FCS_LENGTH; | |
1535 | ||
1536 | ||
1537 | if((max_frame < IXGB_MIN_ENET_FRAME_SIZE_WITHOUT_FCS + ENET_FCS_LENGTH) | |
1538 | || (max_frame > IXGB_MAX_JUMBO_FRAME_SIZE + ENET_FCS_LENGTH)) { | |
ec9c3f5d | 1539 | DPRINTK(PROBE, ERR, "Invalid MTU setting %d\n", new_mtu); |
1da177e4 LT |
1540 | return -EINVAL; |
1541 | } | |
1542 | ||
3f3dc0dd | 1543 | adapter->rx_buffer_len = max_frame; |
1da177e4 LT |
1544 | |
1545 | netdev->mtu = new_mtu; | |
1546 | ||
3f3dc0dd | 1547 | if ((old_max_frame != max_frame) && netif_running(netdev)) { |
1da177e4 LT |
1548 | ixgb_down(adapter, TRUE); |
1549 | ixgb_up(adapter); | |
1550 | } | |
1551 | ||
1552 | return 0; | |
1553 | } | |
1554 | ||
1555 | /** | |
1556 | * ixgb_update_stats - Update the board statistics counters. | |
1557 | * @adapter: board private structure | |
1558 | **/ | |
1559 | ||
1560 | void | |
1561 | ixgb_update_stats(struct ixgb_adapter *adapter) | |
1562 | { | |
5633684d | 1563 | struct net_device *netdev = adapter->netdev; |
01748fbb LV |
1564 | struct pci_dev *pdev = adapter->pdev; |
1565 | ||
1566 | /* Prevent stats update while adapter is being reset */ | |
1567 | if (pdev->error_state && pdev->error_state != pci_channel_io_normal) | |
1568 | return; | |
5633684d MC |
1569 | |
1570 | if((netdev->flags & IFF_PROMISC) || (netdev->flags & IFF_ALLMULTI) || | |
1571 | (netdev->mc_count > IXGB_MAX_NUM_MULTICAST_ADDRESSES)) { | |
1572 | u64 multi = IXGB_READ_REG(&adapter->hw, MPRCL); | |
1573 | u32 bcast_l = IXGB_READ_REG(&adapter->hw, BPRCL); | |
1574 | u32 bcast_h = IXGB_READ_REG(&adapter->hw, BPRCH); | |
1575 | u64 bcast = ((u64)bcast_h << 32) | bcast_l; | |
1576 | ||
1577 | multi |= ((u64)IXGB_READ_REG(&adapter->hw, MPRCH) << 32); | |
1578 | /* fix up multicast stats by removing broadcasts */ | |
7b89178d MC |
1579 | if(multi >= bcast) |
1580 | multi -= bcast; | |
5633684d MC |
1581 | |
1582 | adapter->stats.mprcl += (multi & 0xFFFFFFFF); | |
1583 | adapter->stats.mprch += (multi >> 32); | |
1584 | adapter->stats.bprcl += bcast_l; | |
1585 | adapter->stats.bprch += bcast_h; | |
1586 | } else { | |
1587 | adapter->stats.mprcl += IXGB_READ_REG(&adapter->hw, MPRCL); | |
1588 | adapter->stats.mprch += IXGB_READ_REG(&adapter->hw, MPRCH); | |
1589 | adapter->stats.bprcl += IXGB_READ_REG(&adapter->hw, BPRCL); | |
1590 | adapter->stats.bprch += IXGB_READ_REG(&adapter->hw, BPRCH); | |
1591 | } | |
1da177e4 LT |
1592 | adapter->stats.tprl += IXGB_READ_REG(&adapter->hw, TPRL); |
1593 | adapter->stats.tprh += IXGB_READ_REG(&adapter->hw, TPRH); | |
1594 | adapter->stats.gprcl += IXGB_READ_REG(&adapter->hw, GPRCL); | |
1595 | adapter->stats.gprch += IXGB_READ_REG(&adapter->hw, GPRCH); | |
1da177e4 LT |
1596 | adapter->stats.uprcl += IXGB_READ_REG(&adapter->hw, UPRCL); |
1597 | adapter->stats.uprch += IXGB_READ_REG(&adapter->hw, UPRCH); | |
1598 | adapter->stats.vprcl += IXGB_READ_REG(&adapter->hw, VPRCL); | |
1599 | adapter->stats.vprch += IXGB_READ_REG(&adapter->hw, VPRCH); | |
1600 | adapter->stats.jprcl += IXGB_READ_REG(&adapter->hw, JPRCL); | |
1601 | adapter->stats.jprch += IXGB_READ_REG(&adapter->hw, JPRCH); | |
1602 | adapter->stats.gorcl += IXGB_READ_REG(&adapter->hw, GORCL); | |
1603 | adapter->stats.gorch += IXGB_READ_REG(&adapter->hw, GORCH); | |
1604 | adapter->stats.torl += IXGB_READ_REG(&adapter->hw, TORL); | |
1605 | adapter->stats.torh += IXGB_READ_REG(&adapter->hw, TORH); | |
1606 | adapter->stats.rnbc += IXGB_READ_REG(&adapter->hw, RNBC); | |
1607 | adapter->stats.ruc += IXGB_READ_REG(&adapter->hw, RUC); | |
1608 | adapter->stats.roc += IXGB_READ_REG(&adapter->hw, ROC); | |
1609 | adapter->stats.rlec += IXGB_READ_REG(&adapter->hw, RLEC); | |
1610 | adapter->stats.crcerrs += IXGB_READ_REG(&adapter->hw, CRCERRS); | |
1611 | adapter->stats.icbc += IXGB_READ_REG(&adapter->hw, ICBC); | |
1612 | adapter->stats.ecbc += IXGB_READ_REG(&adapter->hw, ECBC); | |
1613 | adapter->stats.mpc += IXGB_READ_REG(&adapter->hw, MPC); | |
1614 | adapter->stats.tptl += IXGB_READ_REG(&adapter->hw, TPTL); | |
1615 | adapter->stats.tpth += IXGB_READ_REG(&adapter->hw, TPTH); | |
1616 | adapter->stats.gptcl += IXGB_READ_REG(&adapter->hw, GPTCL); | |
1617 | adapter->stats.gptch += IXGB_READ_REG(&adapter->hw, GPTCH); | |
1618 | adapter->stats.bptcl += IXGB_READ_REG(&adapter->hw, BPTCL); | |
1619 | adapter->stats.bptch += IXGB_READ_REG(&adapter->hw, BPTCH); | |
1620 | adapter->stats.mptcl += IXGB_READ_REG(&adapter->hw, MPTCL); | |
1621 | adapter->stats.mptch += IXGB_READ_REG(&adapter->hw, MPTCH); | |
1622 | adapter->stats.uptcl += IXGB_READ_REG(&adapter->hw, UPTCL); | |
1623 | adapter->stats.uptch += IXGB_READ_REG(&adapter->hw, UPTCH); | |
1624 | adapter->stats.vptcl += IXGB_READ_REG(&adapter->hw, VPTCL); | |
1625 | adapter->stats.vptch += IXGB_READ_REG(&adapter->hw, VPTCH); | |
1626 | adapter->stats.jptcl += IXGB_READ_REG(&adapter->hw, JPTCL); | |
1627 | adapter->stats.jptch += IXGB_READ_REG(&adapter->hw, JPTCH); | |
1628 | adapter->stats.gotcl += IXGB_READ_REG(&adapter->hw, GOTCL); | |
1629 | adapter->stats.gotch += IXGB_READ_REG(&adapter->hw, GOTCH); | |
1630 | adapter->stats.totl += IXGB_READ_REG(&adapter->hw, TOTL); | |
1631 | adapter->stats.toth += IXGB_READ_REG(&adapter->hw, TOTH); | |
1632 | adapter->stats.dc += IXGB_READ_REG(&adapter->hw, DC); | |
1633 | adapter->stats.plt64c += IXGB_READ_REG(&adapter->hw, PLT64C); | |
1634 | adapter->stats.tsctc += IXGB_READ_REG(&adapter->hw, TSCTC); | |
1635 | adapter->stats.tsctfc += IXGB_READ_REG(&adapter->hw, TSCTFC); | |
1636 | adapter->stats.ibic += IXGB_READ_REG(&adapter->hw, IBIC); | |
1637 | adapter->stats.rfc += IXGB_READ_REG(&adapter->hw, RFC); | |
1638 | adapter->stats.lfc += IXGB_READ_REG(&adapter->hw, LFC); | |
1639 | adapter->stats.pfrc += IXGB_READ_REG(&adapter->hw, PFRC); | |
1640 | adapter->stats.pftc += IXGB_READ_REG(&adapter->hw, PFTC); | |
1641 | adapter->stats.mcfrc += IXGB_READ_REG(&adapter->hw, MCFRC); | |
1642 | adapter->stats.mcftc += IXGB_READ_REG(&adapter->hw, MCFTC); | |
1643 | adapter->stats.xonrxc += IXGB_READ_REG(&adapter->hw, XONRXC); | |
1644 | adapter->stats.xontxc += IXGB_READ_REG(&adapter->hw, XONTXC); | |
1645 | adapter->stats.xoffrxc += IXGB_READ_REG(&adapter->hw, XOFFRXC); | |
1646 | adapter->stats.xofftxc += IXGB_READ_REG(&adapter->hw, XOFFTXC); | |
1647 | adapter->stats.rjc += IXGB_READ_REG(&adapter->hw, RJC); | |
1648 | ||
1649 | /* Fill out the OS statistics structure */ | |
1650 | ||
1651 | adapter->net_stats.rx_packets = adapter->stats.gprcl; | |
1652 | adapter->net_stats.tx_packets = adapter->stats.gptcl; | |
1653 | adapter->net_stats.rx_bytes = adapter->stats.gorcl; | |
1654 | adapter->net_stats.tx_bytes = adapter->stats.gotcl; | |
1655 | adapter->net_stats.multicast = adapter->stats.mprcl; | |
1656 | adapter->net_stats.collisions = 0; | |
1657 | ||
1658 | /* ignore RLEC as it reports errors for padded (<64bytes) frames | |
1659 | * with a length in the type/len field */ | |
1660 | adapter->net_stats.rx_errors = | |
1661 | /* adapter->stats.rnbc + */ adapter->stats.crcerrs + | |
1662 | adapter->stats.ruc + | |
1663 | adapter->stats.roc /*+ adapter->stats.rlec */ + | |
1664 | adapter->stats.icbc + | |
1665 | adapter->stats.ecbc + adapter->stats.mpc; | |
1666 | ||
1da177e4 LT |
1667 | /* see above |
1668 | * adapter->net_stats.rx_length_errors = adapter->stats.rlec; | |
1669 | */ | |
1670 | ||
1671 | adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs; | |
1672 | adapter->net_stats.rx_fifo_errors = adapter->stats.mpc; | |
1673 | adapter->net_stats.rx_missed_errors = adapter->stats.mpc; | |
1674 | adapter->net_stats.rx_over_errors = adapter->stats.mpc; | |
1675 | ||
1676 | adapter->net_stats.tx_errors = 0; | |
1677 | adapter->net_stats.rx_frame_errors = 0; | |
1678 | adapter->net_stats.tx_aborted_errors = 0; | |
1679 | adapter->net_stats.tx_carrier_errors = 0; | |
1680 | adapter->net_stats.tx_fifo_errors = 0; | |
1681 | adapter->net_stats.tx_heartbeat_errors = 0; | |
1682 | adapter->net_stats.tx_window_errors = 0; | |
1683 | } | |
1684 | ||
1685 | #define IXGB_MAX_INTR 10 | |
1686 | /** | |
1687 | * ixgb_intr - Interrupt Handler | |
1688 | * @irq: interrupt number | |
1689 | * @data: pointer to a network interface device structure | |
1690 | * @pt_regs: CPU registers structure | |
1691 | **/ | |
1692 | ||
1693 | static irqreturn_t | |
1694 | ixgb_intr(int irq, void *data, struct pt_regs *regs) | |
1695 | { | |
1696 | struct net_device *netdev = data; | |
8908c6cd | 1697 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
1698 | struct ixgb_hw *hw = &adapter->hw; |
1699 | uint32_t icr = IXGB_READ_REG(hw, ICR); | |
1700 | #ifndef CONFIG_IXGB_NAPI | |
1701 | unsigned int i; | |
1702 | #endif | |
1703 | ||
1704 | if(unlikely(!icr)) | |
1705 | return IRQ_NONE; /* Not our interrupt */ | |
1706 | ||
1707 | if(unlikely(icr & (IXGB_INT_RXSEQ | IXGB_INT_LSC))) { | |
1708 | mod_timer(&adapter->watchdog_timer, jiffies); | |
1709 | } | |
1710 | ||
1711 | #ifdef CONFIG_IXGB_NAPI | |
1712 | if(netif_rx_schedule_prep(netdev)) { | |
1713 | ||
1714 | /* Disable interrupts and register for poll. The flush | |
1715 | of the posted write is intentionally left out. | |
1716 | */ | |
1717 | ||
1718 | atomic_inc(&adapter->irq_sem); | |
1719 | IXGB_WRITE_REG(&adapter->hw, IMC, ~0); | |
1720 | __netif_rx_schedule(netdev); | |
1721 | } | |
1722 | #else | |
1723 | /* yes, that is actually a & and it is meant to make sure that | |
1724 | * every pass through this for loop checks both receive and | |
1725 | * transmit queues for completed descriptors, intended to | |
1726 | * avoid starvation issues and assist tx/rx fairness. */ | |
1727 | for(i = 0; i < IXGB_MAX_INTR; i++) | |
1728 | if(!ixgb_clean_rx_irq(adapter) & | |
1729 | !ixgb_clean_tx_irq(adapter)) | |
1730 | break; | |
1731 | #endif | |
1732 | return IRQ_HANDLED; | |
1733 | } | |
1734 | ||
1735 | #ifdef CONFIG_IXGB_NAPI | |
1736 | /** | |
1737 | * ixgb_clean - NAPI Rx polling callback | |
1738 | * @adapter: board private structure | |
1739 | **/ | |
1740 | ||
1741 | static int | |
1742 | ixgb_clean(struct net_device *netdev, int *budget) | |
1743 | { | |
8908c6cd | 1744 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
1745 | int work_to_do = min(*budget, netdev->quota); |
1746 | int tx_cleaned; | |
1747 | int work_done = 0; | |
1748 | ||
1749 | tx_cleaned = ixgb_clean_tx_irq(adapter); | |
1750 | ixgb_clean_rx_irq(adapter, &work_done, work_to_do); | |
1751 | ||
1752 | *budget -= work_done; | |
1753 | netdev->quota -= work_done; | |
1754 | ||
1755 | /* if no Tx and not enough Rx work done, exit the polling mode */ | |
1756 | if((!tx_cleaned && (work_done == 0)) || !netif_running(netdev)) { | |
1757 | netif_rx_complete(netdev); | |
1758 | ixgb_irq_enable(adapter); | |
1759 | return 0; | |
1760 | } | |
1761 | ||
1762 | return 1; | |
1763 | } | |
1764 | #endif | |
1765 | ||
1766 | /** | |
1767 | * ixgb_clean_tx_irq - Reclaim resources after transmit completes | |
1768 | * @adapter: board private structure | |
1769 | **/ | |
1770 | ||
1771 | static boolean_t | |
1772 | ixgb_clean_tx_irq(struct ixgb_adapter *adapter) | |
1773 | { | |
1774 | struct ixgb_desc_ring *tx_ring = &adapter->tx_ring; | |
1775 | struct net_device *netdev = adapter->netdev; | |
1776 | struct ixgb_tx_desc *tx_desc, *eop_desc; | |
1777 | struct ixgb_buffer *buffer_info; | |
1778 | unsigned int i, eop; | |
1779 | boolean_t cleaned = FALSE; | |
1780 | ||
1781 | i = tx_ring->next_to_clean; | |
1782 | eop = tx_ring->buffer_info[i].next_to_watch; | |
1783 | eop_desc = IXGB_TX_DESC(*tx_ring, eop); | |
1784 | ||
1785 | while(eop_desc->status & IXGB_TX_DESC_STATUS_DD) { | |
1786 | ||
1787 | for(cleaned = FALSE; !cleaned; ) { | |
1788 | tx_desc = IXGB_TX_DESC(*tx_ring, i); | |
1789 | buffer_info = &tx_ring->buffer_info[i]; | |
1790 | ||
1791 | if (tx_desc->popts | |
1792 | & (IXGB_TX_DESC_POPTS_TXSM | | |
1793 | IXGB_TX_DESC_POPTS_IXSM)) | |
1794 | adapter->hw_csum_tx_good++; | |
1795 | ||
1796 | ixgb_unmap_and_free_tx_resource(adapter, buffer_info); | |
1797 | ||
1798 | *(uint32_t *)&(tx_desc->status) = 0; | |
1799 | ||
1800 | cleaned = (i == eop); | |
1801 | if(++i == tx_ring->count) i = 0; | |
1802 | } | |
1803 | ||
1804 | eop = tx_ring->buffer_info[i].next_to_watch; | |
1805 | eop_desc = IXGB_TX_DESC(*tx_ring, eop); | |
1806 | } | |
1807 | ||
1808 | tx_ring->next_to_clean = i; | |
1809 | ||
3352a3b2 AK |
1810 | if (unlikely(netif_queue_stopped(netdev))) { |
1811 | spin_lock(&adapter->tx_lock); | |
1812 | if (netif_queue_stopped(netdev) && netif_carrier_ok(netdev) && | |
ab8ced2f | 1813 | (IXGB_DESC_UNUSED(tx_ring) >= DESC_NEEDED)) |
3352a3b2 AK |
1814 | netif_wake_queue(netdev); |
1815 | spin_unlock(&adapter->tx_lock); | |
1da177e4 | 1816 | } |
1da177e4 LT |
1817 | |
1818 | if(adapter->detect_tx_hung) { | |
1819 | /* detect a transmit hang in hardware, this serializes the | |
1820 | * check with the clearing of time_stamp and movement of i */ | |
1821 | adapter->detect_tx_hung = FALSE; | |
9b8118df AK |
1822 | if (tx_ring->buffer_info[eop].dma && |
1823 | time_after(jiffies, tx_ring->buffer_info[eop].time_stamp + HZ) | |
1da177e4 | 1824 | && !(IXGB_READ_REG(&adapter->hw, STATUS) & |
9b8118df AK |
1825 | IXGB_STATUS_TXOFF)) { |
1826 | /* detected Tx unit hang */ | |
1827 | DPRINTK(DRV, ERR, "Detected Tx Unit Hang\n" | |
1828 | " TDH <%x>\n" | |
1829 | " TDT <%x>\n" | |
1830 | " next_to_use <%x>\n" | |
1831 | " next_to_clean <%x>\n" | |
1832 | "buffer_info[next_to_clean]\n" | |
1833 | " time_stamp <%lx>\n" | |
1834 | " next_to_watch <%x>\n" | |
1835 | " jiffies <%lx>\n" | |
1836 | " next_to_watch.status <%x>\n", | |
1837 | IXGB_READ_REG(&adapter->hw, TDH), | |
1838 | IXGB_READ_REG(&adapter->hw, TDT), | |
1839 | tx_ring->next_to_use, | |
1840 | tx_ring->next_to_clean, | |
1841 | tx_ring->buffer_info[eop].time_stamp, | |
1842 | eop, | |
1843 | jiffies, | |
1844 | eop_desc->status); | |
1da177e4 | 1845 | netif_stop_queue(netdev); |
9b8118df | 1846 | } |
1da177e4 LT |
1847 | } |
1848 | ||
1849 | return cleaned; | |
1850 | } | |
1851 | ||
1852 | /** | |
1853 | * ixgb_rx_checksum - Receive Checksum Offload for 82597. | |
1854 | * @adapter: board private structure | |
1855 | * @rx_desc: receive descriptor | |
1856 | * @sk_buff: socket buffer with received data | |
1857 | **/ | |
1858 | ||
235949d1 | 1859 | static void |
1da177e4 LT |
1860 | ixgb_rx_checksum(struct ixgb_adapter *adapter, |
1861 | struct ixgb_rx_desc *rx_desc, | |
1862 | struct sk_buff *skb) | |
1863 | { | |
1864 | /* Ignore Checksum bit is set OR | |
1865 | * TCP Checksum has not been calculated | |
1866 | */ | |
1867 | if((rx_desc->status & IXGB_RX_DESC_STATUS_IXSM) || | |
1868 | (!(rx_desc->status & IXGB_RX_DESC_STATUS_TCPCS))) { | |
1869 | skb->ip_summed = CHECKSUM_NONE; | |
1870 | return; | |
1871 | } | |
1872 | ||
1873 | /* At this point we know the hardware did the TCP checksum */ | |
1874 | /* now look at the TCP checksum error bit */ | |
1875 | if(rx_desc->errors & IXGB_RX_DESC_ERRORS_TCPE) { | |
1876 | /* let the stack verify checksum errors */ | |
1877 | skb->ip_summed = CHECKSUM_NONE; | |
1878 | adapter->hw_csum_rx_error++; | |
1879 | } else { | |
1880 | /* TCP checksum is good */ | |
1881 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
1882 | adapter->hw_csum_rx_good++; | |
1883 | } | |
1884 | } | |
1885 | ||
1886 | /** | |
1887 | * ixgb_clean_rx_irq - Send received data up the network stack, | |
1888 | * @adapter: board private structure | |
1889 | **/ | |
1890 | ||
1891 | static boolean_t | |
1892 | #ifdef CONFIG_IXGB_NAPI | |
1893 | ixgb_clean_rx_irq(struct ixgb_adapter *adapter, int *work_done, int work_to_do) | |
1894 | #else | |
1895 | ixgb_clean_rx_irq(struct ixgb_adapter *adapter) | |
1896 | #endif | |
1897 | { | |
1898 | struct ixgb_desc_ring *rx_ring = &adapter->rx_ring; | |
1899 | struct net_device *netdev = adapter->netdev; | |
1900 | struct pci_dev *pdev = adapter->pdev; | |
1901 | struct ixgb_rx_desc *rx_desc, *next_rxd; | |
1902 | struct ixgb_buffer *buffer_info, *next_buffer, *next2_buffer; | |
1da177e4 LT |
1903 | uint32_t length; |
1904 | unsigned int i, j; | |
1905 | boolean_t cleaned = FALSE; | |
1906 | ||
1907 | i = rx_ring->next_to_clean; | |
1908 | rx_desc = IXGB_RX_DESC(*rx_ring, i); | |
1909 | buffer_info = &rx_ring->buffer_info[i]; | |
1910 | ||
1911 | while(rx_desc->status & IXGB_RX_DESC_STATUS_DD) { | |
f404de1c MC |
1912 | struct sk_buff *skb, *next_skb; |
1913 | u8 status; | |
1da177e4 LT |
1914 | |
1915 | #ifdef CONFIG_IXGB_NAPI | |
1916 | if(*work_done >= work_to_do) | |
1917 | break; | |
1918 | ||
1919 | (*work_done)++; | |
1920 | #endif | |
f404de1c | 1921 | status = rx_desc->status; |
1da177e4 | 1922 | skb = buffer_info->skb; |
1dfdd7df | 1923 | buffer_info->skb = NULL; |
f404de1c | 1924 | |
1da177e4 LT |
1925 | prefetch(skb->data); |
1926 | ||
1927 | if(++i == rx_ring->count) i = 0; | |
1928 | next_rxd = IXGB_RX_DESC(*rx_ring, i); | |
1929 | prefetch(next_rxd); | |
1930 | ||
1931 | if((j = i + 1) == rx_ring->count) j = 0; | |
1932 | next2_buffer = &rx_ring->buffer_info[j]; | |
1933 | prefetch(next2_buffer); | |
1934 | ||
1935 | next_buffer = &rx_ring->buffer_info[i]; | |
1936 | next_skb = next_buffer->skb; | |
1937 | prefetch(next_skb); | |
1938 | ||
1da177e4 LT |
1939 | cleaned = TRUE; |
1940 | ||
1941 | pci_unmap_single(pdev, | |
1942 | buffer_info->dma, | |
1943 | buffer_info->length, | |
1944 | PCI_DMA_FROMDEVICE); | |
1945 | ||
1946 | length = le16_to_cpu(rx_desc->length); | |
1947 | ||
f404de1c | 1948 | if(unlikely(!(status & IXGB_RX_DESC_STATUS_EOP))) { |
1da177e4 LT |
1949 | |
1950 | /* All receives must fit into a single buffer */ | |
1951 | ||
1952 | IXGB_DBG("Receive packet consumed multiple buffers " | |
1953 | "length<%x>\n", length); | |
1954 | ||
1955 | dev_kfree_skb_irq(skb); | |
f404de1c | 1956 | goto rxdesc_done; |
1da177e4 LT |
1957 | } |
1958 | ||
1959 | if (unlikely(rx_desc->errors | |
1960 | & (IXGB_RX_DESC_ERRORS_CE | IXGB_RX_DESC_ERRORS_SE | |
1961 | | IXGB_RX_DESC_ERRORS_P | | |
1962 | IXGB_RX_DESC_ERRORS_RXE))) { | |
1963 | ||
1964 | dev_kfree_skb_irq(skb); | |
f404de1c | 1965 | goto rxdesc_done; |
1da177e4 LT |
1966 | } |
1967 | ||
6b900bb4 AK |
1968 | /* code added for copybreak, this should improve |
1969 | * performance for small packets with large amounts | |
1970 | * of reassembly being done in the stack */ | |
1971 | #define IXGB_CB_LENGTH 256 | |
1972 | if (length < IXGB_CB_LENGTH) { | |
1973 | struct sk_buff *new_skb = | |
5791704f | 1974 | netdev_alloc_skb(netdev, length + NET_IP_ALIGN); |
6b900bb4 AK |
1975 | if (new_skb) { |
1976 | skb_reserve(new_skb, NET_IP_ALIGN); | |
6b900bb4 AK |
1977 | memcpy(new_skb->data - NET_IP_ALIGN, |
1978 | skb->data - NET_IP_ALIGN, | |
1979 | length + NET_IP_ALIGN); | |
1980 | /* save the skb in buffer_info as good */ | |
1981 | buffer_info->skb = skb; | |
1982 | skb = new_skb; | |
1983 | } | |
1984 | } | |
1985 | /* end copybreak code */ | |
1986 | ||
1da177e4 LT |
1987 | /* Good Receive */ |
1988 | skb_put(skb, length); | |
1989 | ||
1990 | /* Receive Checksum Offload */ | |
1991 | ixgb_rx_checksum(adapter, rx_desc, skb); | |
1992 | ||
1993 | skb->protocol = eth_type_trans(skb, netdev); | |
1994 | #ifdef CONFIG_IXGB_NAPI | |
f404de1c | 1995 | if(adapter->vlgrp && (status & IXGB_RX_DESC_STATUS_VP)) { |
1da177e4 LT |
1996 | vlan_hwaccel_receive_skb(skb, adapter->vlgrp, |
1997 | le16_to_cpu(rx_desc->special) & | |
1998 | IXGB_RX_DESC_SPECIAL_VLAN_MASK); | |
1999 | } else { | |
2000 | netif_receive_skb(skb); | |
2001 | } | |
2002 | #else /* CONFIG_IXGB_NAPI */ | |
f404de1c | 2003 | if(adapter->vlgrp && (status & IXGB_RX_DESC_STATUS_VP)) { |
1da177e4 LT |
2004 | vlan_hwaccel_rx(skb, adapter->vlgrp, |
2005 | le16_to_cpu(rx_desc->special) & | |
2006 | IXGB_RX_DESC_SPECIAL_VLAN_MASK); | |
2007 | } else { | |
2008 | netif_rx(skb); | |
2009 | } | |
2010 | #endif /* CONFIG_IXGB_NAPI */ | |
2011 | netdev->last_rx = jiffies; | |
2012 | ||
f404de1c MC |
2013 | rxdesc_done: |
2014 | /* clean up descriptor, might be written over by hw */ | |
1da177e4 | 2015 | rx_desc->status = 0; |
1da177e4 | 2016 | |
f404de1c | 2017 | /* use prefetched values */ |
1da177e4 LT |
2018 | rx_desc = next_rxd; |
2019 | buffer_info = next_buffer; | |
2020 | } | |
2021 | ||
2022 | rx_ring->next_to_clean = i; | |
2023 | ||
2024 | ixgb_alloc_rx_buffers(adapter); | |
2025 | ||
2026 | return cleaned; | |
2027 | } | |
2028 | ||
2029 | /** | |
2030 | * ixgb_alloc_rx_buffers - Replace used receive buffers | |
2031 | * @adapter: address of board private structure | |
2032 | **/ | |
2033 | ||
2034 | static void | |
2035 | ixgb_alloc_rx_buffers(struct ixgb_adapter *adapter) | |
2036 | { | |
2037 | struct ixgb_desc_ring *rx_ring = &adapter->rx_ring; | |
2038 | struct net_device *netdev = adapter->netdev; | |
2039 | struct pci_dev *pdev = adapter->pdev; | |
2040 | struct ixgb_rx_desc *rx_desc; | |
2041 | struct ixgb_buffer *buffer_info; | |
2042 | struct sk_buff *skb; | |
2043 | unsigned int i; | |
2044 | int num_group_tail_writes; | |
2045 | long cleancount; | |
2046 | ||
2047 | i = rx_ring->next_to_use; | |
2048 | buffer_info = &rx_ring->buffer_info[i]; | |
2049 | cleancount = IXGB_DESC_UNUSED(rx_ring); | |
2050 | ||
2051 | num_group_tail_writes = IXGB_RX_BUFFER_WRITE; | |
2052 | ||
41639fed MC |
2053 | /* leave three descriptors unused */ |
2054 | while(--cleancount > 2) { | |
1dfdd7df | 2055 | /* recycle! its good for you */ |
69c7a940 AK |
2056 | skb = buffer_info->skb; |
2057 | if (skb) { | |
1dfdd7df AK |
2058 | skb_trim(skb, 0); |
2059 | goto map_skb; | |
2060 | } | |
1da177e4 | 2061 | |
69c7a940 AK |
2062 | skb = netdev_alloc_skb(netdev, adapter->rx_buffer_len |
2063 | + NET_IP_ALIGN); | |
1dfdd7df | 2064 | if (unlikely(!skb)) { |
1da177e4 | 2065 | /* Better luck next round */ |
1dfdd7df | 2066 | adapter->alloc_rx_buff_failed++; |
1da177e4 LT |
2067 | break; |
2068 | } | |
2069 | ||
2070 | /* Make buffer alignment 2 beyond a 16 byte boundary | |
2071 | * this will result in a 16 byte aligned IP header after | |
2072 | * the 14 byte MAC header is removed | |
2073 | */ | |
2074 | skb_reserve(skb, NET_IP_ALIGN); | |
2075 | ||
1da177e4 LT |
2076 | buffer_info->skb = skb; |
2077 | buffer_info->length = adapter->rx_buffer_len; | |
1dfdd7df AK |
2078 | map_skb: |
2079 | buffer_info->dma = pci_map_single(pdev, | |
2080 | skb->data, | |
2081 | adapter->rx_buffer_len, | |
2082 | PCI_DMA_FROMDEVICE); | |
1da177e4 | 2083 | |
1dfdd7df | 2084 | rx_desc = IXGB_RX_DESC(*rx_ring, i); |
1da177e4 | 2085 | rx_desc->buff_addr = cpu_to_le64(buffer_info->dma); |
41639fed MC |
2086 | /* guarantee DD bit not set now before h/w gets descriptor |
2087 | * this is the rest of the workaround for h/w double | |
2088 | * writeback. */ | |
2089 | rx_desc->status = 0; | |
1da177e4 | 2090 | |
1da177e4 LT |
2091 | |
2092 | if(++i == rx_ring->count) i = 0; | |
2093 | buffer_info = &rx_ring->buffer_info[i]; | |
2094 | } | |
2095 | ||
1dfdd7df AK |
2096 | if (likely(rx_ring->next_to_use != i)) { |
2097 | rx_ring->next_to_use = i; | |
2098 | if (unlikely(i-- == 0)) | |
2099 | i = (rx_ring->count - 1); | |
2100 | ||
2101 | /* Force memory writes to complete before letting h/w | |
2102 | * know there are new descriptors to fetch. (Only | |
2103 | * applicable for weak-ordered memory model archs, such | |
2104 | * as IA-64). */ | |
2105 | wmb(); | |
2106 | IXGB_WRITE_REG(&adapter->hw, RDT, i); | |
2107 | } | |
1da177e4 LT |
2108 | } |
2109 | ||
2110 | /** | |
2111 | * ixgb_vlan_rx_register - enables or disables vlan tagging/stripping. | |
2112 | * | |
2113 | * @param netdev network interface device structure | |
2114 | * @param grp indicates to enable or disable tagging/stripping | |
2115 | **/ | |
2116 | static void | |
2117 | ixgb_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp) | |
2118 | { | |
8908c6cd | 2119 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
2120 | uint32_t ctrl, rctl; |
2121 | ||
2122 | ixgb_irq_disable(adapter); | |
2123 | adapter->vlgrp = grp; | |
2124 | ||
2125 | if(grp) { | |
2126 | /* enable VLAN tag insert/strip */ | |
2127 | ctrl = IXGB_READ_REG(&adapter->hw, CTRL0); | |
2128 | ctrl |= IXGB_CTRL0_VME; | |
2129 | IXGB_WRITE_REG(&adapter->hw, CTRL0, ctrl); | |
2130 | ||
2131 | /* enable VLAN receive filtering */ | |
2132 | ||
2133 | rctl = IXGB_READ_REG(&adapter->hw, RCTL); | |
2134 | rctl |= IXGB_RCTL_VFE; | |
2135 | rctl &= ~IXGB_RCTL_CFIEN; | |
2136 | IXGB_WRITE_REG(&adapter->hw, RCTL, rctl); | |
2137 | } else { | |
2138 | /* disable VLAN tag insert/strip */ | |
2139 | ||
2140 | ctrl = IXGB_READ_REG(&adapter->hw, CTRL0); | |
2141 | ctrl &= ~IXGB_CTRL0_VME; | |
2142 | IXGB_WRITE_REG(&adapter->hw, CTRL0, ctrl); | |
2143 | ||
2144 | /* disable VLAN filtering */ | |
2145 | ||
2146 | rctl = IXGB_READ_REG(&adapter->hw, RCTL); | |
2147 | rctl &= ~IXGB_RCTL_VFE; | |
2148 | IXGB_WRITE_REG(&adapter->hw, RCTL, rctl); | |
2149 | } | |
2150 | ||
2151 | ixgb_irq_enable(adapter); | |
2152 | } | |
2153 | ||
2154 | static void | |
2155 | ixgb_vlan_rx_add_vid(struct net_device *netdev, uint16_t vid) | |
2156 | { | |
8908c6cd | 2157 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
2158 | uint32_t vfta, index; |
2159 | ||
2160 | /* add VID to filter table */ | |
2161 | ||
2162 | index = (vid >> 5) & 0x7F; | |
2163 | vfta = IXGB_READ_REG_ARRAY(&adapter->hw, VFTA, index); | |
2164 | vfta |= (1 << (vid & 0x1F)); | |
2165 | ixgb_write_vfta(&adapter->hw, index, vfta); | |
2166 | } | |
2167 | ||
2168 | static void | |
2169 | ixgb_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid) | |
2170 | { | |
8908c6cd | 2171 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
2172 | uint32_t vfta, index; |
2173 | ||
2174 | ixgb_irq_disable(adapter); | |
2175 | ||
2176 | if(adapter->vlgrp) | |
2177 | adapter->vlgrp->vlan_devices[vid] = NULL; | |
2178 | ||
2179 | ixgb_irq_enable(adapter); | |
2180 | ||
2181 | /* remove VID from filter table*/ | |
2182 | ||
2183 | index = (vid >> 5) & 0x7F; | |
2184 | vfta = IXGB_READ_REG_ARRAY(&adapter->hw, VFTA, index); | |
2185 | vfta &= ~(1 << (vid & 0x1F)); | |
2186 | ixgb_write_vfta(&adapter->hw, index, vfta); | |
2187 | } | |
2188 | ||
2189 | static void | |
2190 | ixgb_restore_vlan(struct ixgb_adapter *adapter) | |
2191 | { | |
2192 | ixgb_vlan_rx_register(adapter->netdev, adapter->vlgrp); | |
2193 | ||
2194 | if(adapter->vlgrp) { | |
2195 | uint16_t vid; | |
2196 | for(vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) { | |
2197 | if(!adapter->vlgrp->vlan_devices[vid]) | |
2198 | continue; | |
2199 | ixgb_vlan_rx_add_vid(adapter->netdev, vid); | |
2200 | } | |
2201 | } | |
2202 | } | |
2203 | ||
1da177e4 LT |
2204 | #ifdef CONFIG_NET_POLL_CONTROLLER |
2205 | /* | |
2206 | * Polling 'interrupt' - used by things like netconsole to send skbs | |
2207 | * without having to re-enable interrupts. It's not called while | |
2208 | * the interrupt routine is executing. | |
2209 | */ | |
2210 | ||
2211 | static void ixgb_netpoll(struct net_device *dev) | |
2212 | { | |
f990b426 | 2213 | struct ixgb_adapter *adapter = netdev_priv(dev); |
ac79c82e | 2214 | |
1da177e4 LT |
2215 | disable_irq(adapter->pdev->irq); |
2216 | ixgb_intr(adapter->pdev->irq, dev, NULL); | |
2217 | enable_irq(adapter->pdev->irq); | |
2218 | } | |
2219 | #endif | |
2220 | ||
01748fbb LV |
2221 | /** |
2222 | * ixgb_io_error_detected() - called when PCI error is detected | |
2223 | * @pdev pointer to pci device with error | |
2224 | * @state pci channel state after error | |
2225 | * | |
2226 | * This callback is called by the PCI subsystem whenever | |
2227 | * a PCI bus error is detected. | |
2228 | */ | |
2229 | static pci_ers_result_t ixgb_io_error_detected (struct pci_dev *pdev, | |
2230 | enum pci_channel_state state) | |
2231 | { | |
2232 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2233 | struct ixgb_adapter *adapter = netdev->priv; | |
2234 | ||
2235 | if(netif_running(netdev)) | |
2236 | ixgb_down(adapter, TRUE); | |
2237 | ||
2238 | pci_disable_device(pdev); | |
2239 | ||
2240 | /* Request a slot reset. */ | |
2241 | return PCI_ERS_RESULT_NEED_RESET; | |
2242 | } | |
2243 | ||
2244 | /** | |
2245 | * ixgb_io_slot_reset - called after the pci bus has been reset. | |
2246 | * @pdev pointer to pci device with error | |
2247 | * | |
2248 | * This callback is called after the PCI buss has been reset. | |
2249 | * Basically, this tries to restart the card from scratch. | |
2250 | * This is a shortened version of the device probe/discovery code, | |
2251 | * it resembles the first-half of the ixgb_probe() routine. | |
2252 | */ | |
2253 | static pci_ers_result_t ixgb_io_slot_reset (struct pci_dev *pdev) | |
2254 | { | |
2255 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2256 | struct ixgb_adapter *adapter = netdev->priv; | |
2257 | ||
2258 | if(pci_enable_device(pdev)) { | |
2259 | DPRINTK(PROBE, ERR, "Cannot re-enable PCI device after reset.\n"); | |
2260 | return PCI_ERS_RESULT_DISCONNECT; | |
2261 | } | |
2262 | ||
2263 | /* Perform card reset only on one instance of the card */ | |
2264 | if (0 != PCI_FUNC (pdev->devfn)) | |
2265 | return PCI_ERS_RESULT_RECOVERED; | |
2266 | ||
2267 | pci_set_master(pdev); | |
2268 | ||
2269 | netif_carrier_off(netdev); | |
2270 | netif_stop_queue(netdev); | |
2271 | ixgb_reset(adapter); | |
2272 | ||
2273 | /* Make sure the EEPROM is good */ | |
2274 | if(!ixgb_validate_eeprom_checksum(&adapter->hw)) { | |
2275 | DPRINTK(PROBE, ERR, "After reset, the EEPROM checksum is not valid.\n"); | |
2276 | return PCI_ERS_RESULT_DISCONNECT; | |
2277 | } | |
2278 | ixgb_get_ee_mac_addr(&adapter->hw, netdev->dev_addr); | |
2279 | memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len); | |
2280 | ||
2281 | if(!is_valid_ether_addr(netdev->perm_addr)) { | |
2282 | DPRINTK(PROBE, ERR, "After reset, invalid MAC address.\n"); | |
2283 | return PCI_ERS_RESULT_DISCONNECT; | |
2284 | } | |
2285 | ||
2286 | return PCI_ERS_RESULT_RECOVERED; | |
2287 | } | |
2288 | ||
2289 | /** | |
2290 | * ixgb_io_resume - called when its OK to resume normal operations | |
2291 | * @pdev pointer to pci device with error | |
2292 | * | |
2293 | * The error recovery driver tells us that its OK to resume | |
2294 | * normal operation. Implementation resembles the second-half | |
2295 | * of the ixgb_probe() routine. | |
2296 | */ | |
2297 | static void ixgb_io_resume (struct pci_dev *pdev) | |
2298 | { | |
2299 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2300 | struct ixgb_adapter *adapter = netdev->priv; | |
2301 | ||
2302 | pci_set_master(pdev); | |
2303 | ||
2304 | if(netif_running(netdev)) { | |
2305 | if(ixgb_up(adapter)) { | |
2306 | printk ("ixgb: can't bring device back up after reset\n"); | |
2307 | return; | |
2308 | } | |
2309 | } | |
2310 | ||
2311 | netif_device_attach(netdev); | |
2312 | mod_timer(&adapter->watchdog_timer, jiffies); | |
2313 | } | |
2314 | ||
1da177e4 | 2315 | /* ixgb_main.c */ |