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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 | |
a3ffab87 | 39 | #define DRV_VERSION "1.0.126-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); | |
7d12e780 | 96 | static irqreturn_t ixgb_intr(int irq, void *data); |
1da177e4 | 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); | |
c4028958 | 109 | static void ixgb_tx_timeout_task(struct work_struct *work); |
1da177e4 LT |
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; | |
1da177e4 | 459 | netdev->features |= NETIF_F_TSO; |
f017f14b AK |
460 | #ifdef NETIF_F_LLTX |
461 | netdev->features |= NETIF_F_LLTX; | |
462 | #endif | |
1da177e4 LT |
463 | |
464 | if(pci_using_dac) | |
465 | netdev->features |= NETIF_F_HIGHDMA; | |
466 | ||
467 | /* make sure the EEPROM is good */ | |
468 | ||
469 | if(!ixgb_validate_eeprom_checksum(&adapter->hw)) { | |
ec9c3f5d | 470 | DPRINTK(PROBE, ERR, "The EEPROM Checksum Is Not Valid\n"); |
1da177e4 LT |
471 | err = -EIO; |
472 | goto err_eeprom; | |
473 | } | |
474 | ||
475 | ixgb_get_ee_mac_addr(&adapter->hw, netdev->dev_addr); | |
df859c51 | 476 | memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len); |
1da177e4 | 477 | |
df859c51 | 478 | if(!is_valid_ether_addr(netdev->perm_addr)) { |
ec9c3f5d | 479 | DPRINTK(PROBE, ERR, "Invalid MAC Address\n"); |
1da177e4 LT |
480 | err = -EIO; |
481 | goto err_eeprom; | |
482 | } | |
483 | ||
484 | adapter->part_num = ixgb_get_ee_pba_number(&adapter->hw); | |
485 | ||
486 | init_timer(&adapter->watchdog_timer); | |
487 | adapter->watchdog_timer.function = &ixgb_watchdog; | |
488 | adapter->watchdog_timer.data = (unsigned long)adapter; | |
489 | ||
c4028958 | 490 | INIT_WORK(&adapter->tx_timeout_task, ixgb_tx_timeout_task); |
1da177e4 | 491 | |
ec9c3f5d | 492 | strcpy(netdev->name, "eth%d"); |
1da177e4 LT |
493 | if((err = register_netdev(netdev))) |
494 | goto err_register; | |
495 | ||
496 | /* we're going to reset, so assume we have no link for now */ | |
497 | ||
498 | netif_carrier_off(netdev); | |
499 | netif_stop_queue(netdev); | |
500 | ||
ec9c3f5d | 501 | DPRINTK(PROBE, INFO, "Intel(R) PRO/10GbE Network Connection\n"); |
1da177e4 LT |
502 | ixgb_check_options(adapter); |
503 | /* reset the hardware with the new settings */ | |
504 | ||
505 | ixgb_reset(adapter); | |
506 | ||
507 | cards_found++; | |
508 | return 0; | |
509 | ||
510 | err_register: | |
511 | err_sw_init: | |
512 | err_eeprom: | |
513 | iounmap(adapter->hw.hw_addr); | |
514 | err_ioremap: | |
515 | free_netdev(netdev); | |
516 | err_alloc_etherdev: | |
517 | pci_release_regions(pdev); | |
c91e468a AS |
518 | err_request_regions: |
519 | err_dma_mask: | |
520 | pci_disable_device(pdev); | |
1da177e4 LT |
521 | return err; |
522 | } | |
523 | ||
524 | /** | |
525 | * ixgb_remove - Device Removal Routine | |
526 | * @pdev: PCI device information struct | |
527 | * | |
528 | * ixgb_remove is called by the PCI subsystem to alert the driver | |
529 | * that it should release a PCI device. The could be caused by a | |
530 | * Hot-Plug event, or because the driver is going to be removed from | |
531 | * memory. | |
532 | **/ | |
533 | ||
534 | static void __devexit | |
535 | ixgb_remove(struct pci_dev *pdev) | |
536 | { | |
537 | struct net_device *netdev = pci_get_drvdata(pdev); | |
8908c6cd | 538 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
539 | |
540 | unregister_netdev(netdev); | |
541 | ||
542 | iounmap(adapter->hw.hw_addr); | |
543 | pci_release_regions(pdev); | |
544 | ||
545 | free_netdev(netdev); | |
546 | } | |
547 | ||
548 | /** | |
549 | * ixgb_sw_init - Initialize general software structures (struct ixgb_adapter) | |
550 | * @adapter: board private structure to initialize | |
551 | * | |
552 | * ixgb_sw_init initializes the Adapter private data structure. | |
553 | * Fields are initialized based on PCI device information and | |
554 | * OS network device settings (MTU size). | |
555 | **/ | |
556 | ||
557 | static int __devinit | |
558 | ixgb_sw_init(struct ixgb_adapter *adapter) | |
559 | { | |
560 | struct ixgb_hw *hw = &adapter->hw; | |
561 | struct net_device *netdev = adapter->netdev; | |
562 | struct pci_dev *pdev = adapter->pdev; | |
563 | ||
564 | /* PCI config space info */ | |
565 | ||
566 | hw->vendor_id = pdev->vendor; | |
567 | hw->device_id = pdev->device; | |
568 | hw->subsystem_vendor_id = pdev->subsystem_vendor; | |
569 | hw->subsystem_id = pdev->subsystem_device; | |
570 | ||
1da177e4 | 571 | hw->max_frame_size = netdev->mtu + ENET_HEADER_SIZE + ENET_FCS_LENGTH; |
3f3dc0dd | 572 | adapter->rx_buffer_len = hw->max_frame_size; |
1da177e4 LT |
573 | |
574 | if((hw->device_id == IXGB_DEVICE_ID_82597EX) | |
940829e2 AK |
575 | || (hw->device_id == IXGB_DEVICE_ID_82597EX_CX4) |
576 | || (hw->device_id == IXGB_DEVICE_ID_82597EX_LR) | |
577 | || (hw->device_id == IXGB_DEVICE_ID_82597EX_SR)) | |
1da177e4 LT |
578 | hw->mac_type = ixgb_82597; |
579 | else { | |
580 | /* should never have loaded on this device */ | |
ec9c3f5d | 581 | DPRINTK(PROBE, ERR, "unsupported device id\n"); |
1da177e4 LT |
582 | } |
583 | ||
584 | /* enable flow control to be programmed */ | |
585 | hw->fc.send_xon = 1; | |
586 | ||
587 | atomic_set(&adapter->irq_sem, 1); | |
588 | spin_lock_init(&adapter->tx_lock); | |
589 | ||
590 | return 0; | |
591 | } | |
592 | ||
593 | /** | |
594 | * ixgb_open - Called when a network interface is made active | |
595 | * @netdev: network interface device structure | |
596 | * | |
597 | * Returns 0 on success, negative value on failure | |
598 | * | |
599 | * The open entry point is called when a network interface is made | |
600 | * active by the system (IFF_UP). At this point all resources needed | |
601 | * for transmit and receive operations are allocated, the interrupt | |
602 | * handler is registered with the OS, the watchdog timer is started, | |
603 | * and the stack is notified that the interface is ready. | |
604 | **/ | |
605 | ||
606 | static int | |
607 | ixgb_open(struct net_device *netdev) | |
608 | { | |
8908c6cd | 609 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
610 | int err; |
611 | ||
612 | /* allocate transmit descriptors */ | |
613 | ||
614 | if((err = ixgb_setup_tx_resources(adapter))) | |
615 | goto err_setup_tx; | |
616 | ||
617 | /* allocate receive descriptors */ | |
618 | ||
619 | if((err = ixgb_setup_rx_resources(adapter))) | |
620 | goto err_setup_rx; | |
621 | ||
622 | if((err = ixgb_up(adapter))) | |
623 | goto err_up; | |
624 | ||
625 | return 0; | |
626 | ||
627 | err_up: | |
628 | ixgb_free_rx_resources(adapter); | |
629 | err_setup_rx: | |
630 | ixgb_free_tx_resources(adapter); | |
631 | err_setup_tx: | |
632 | ixgb_reset(adapter); | |
633 | ||
634 | return err; | |
635 | } | |
636 | ||
637 | /** | |
638 | * ixgb_close - Disables a network interface | |
639 | * @netdev: network interface device structure | |
640 | * | |
641 | * Returns 0, this is not allowed to fail | |
642 | * | |
643 | * The close entry point is called when an interface is de-activated | |
644 | * by the OS. The hardware is still under the drivers control, but | |
645 | * needs to be disabled. A global MAC reset is issued to stop the | |
646 | * hardware, and all transmit and receive resources are freed. | |
647 | **/ | |
648 | ||
649 | static int | |
650 | ixgb_close(struct net_device *netdev) | |
651 | { | |
8908c6cd | 652 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
653 | |
654 | ixgb_down(adapter, TRUE); | |
655 | ||
656 | ixgb_free_tx_resources(adapter); | |
657 | ixgb_free_rx_resources(adapter); | |
658 | ||
659 | return 0; | |
660 | } | |
661 | ||
662 | /** | |
663 | * ixgb_setup_tx_resources - allocate Tx resources (Descriptors) | |
664 | * @adapter: board private structure | |
665 | * | |
666 | * Return 0 on success, negative on failure | |
667 | **/ | |
668 | ||
669 | int | |
670 | ixgb_setup_tx_resources(struct ixgb_adapter *adapter) | |
671 | { | |
672 | struct ixgb_desc_ring *txdr = &adapter->tx_ring; | |
673 | struct pci_dev *pdev = adapter->pdev; | |
674 | int size; | |
675 | ||
676 | size = sizeof(struct ixgb_buffer) * txdr->count; | |
677 | txdr->buffer_info = vmalloc(size); | |
678 | if(!txdr->buffer_info) { | |
ec9c3f5d AK |
679 | DPRINTK(PROBE, ERR, |
680 | "Unable to allocate transmit descriptor ring memory\n"); | |
1da177e4 LT |
681 | return -ENOMEM; |
682 | } | |
683 | memset(txdr->buffer_info, 0, size); | |
684 | ||
685 | /* round up to nearest 4K */ | |
686 | ||
687 | txdr->size = txdr->count * sizeof(struct ixgb_tx_desc); | |
688 | IXGB_ROUNDUP(txdr->size, 4096); | |
689 | ||
690 | txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma); | |
691 | if(!txdr->desc) { | |
692 | vfree(txdr->buffer_info); | |
ec9c3f5d AK |
693 | DPRINTK(PROBE, ERR, |
694 | "Unable to allocate transmit descriptor memory\n"); | |
1da177e4 LT |
695 | return -ENOMEM; |
696 | } | |
697 | memset(txdr->desc, 0, txdr->size); | |
698 | ||
699 | txdr->next_to_use = 0; | |
700 | txdr->next_to_clean = 0; | |
701 | ||
702 | return 0; | |
703 | } | |
704 | ||
705 | /** | |
706 | * ixgb_configure_tx - Configure 82597 Transmit Unit after Reset. | |
707 | * @adapter: board private structure | |
708 | * | |
709 | * Configure the Tx unit of the MAC after a reset. | |
710 | **/ | |
711 | ||
712 | static void | |
713 | ixgb_configure_tx(struct ixgb_adapter *adapter) | |
714 | { | |
715 | uint64_t tdba = adapter->tx_ring.dma; | |
716 | uint32_t tdlen = adapter->tx_ring.count * sizeof(struct ixgb_tx_desc); | |
717 | uint32_t tctl; | |
718 | struct ixgb_hw *hw = &adapter->hw; | |
719 | ||
720 | /* Setup the Base and Length of the Tx Descriptor Ring | |
721 | * tx_ring.dma can be either a 32 or 64 bit value | |
722 | */ | |
723 | ||
724 | IXGB_WRITE_REG(hw, TDBAL, (tdba & 0x00000000ffffffffULL)); | |
725 | IXGB_WRITE_REG(hw, TDBAH, (tdba >> 32)); | |
726 | ||
727 | IXGB_WRITE_REG(hw, TDLEN, tdlen); | |
728 | ||
729 | /* Setup the HW Tx Head and Tail descriptor pointers */ | |
730 | ||
731 | IXGB_WRITE_REG(hw, TDH, 0); | |
732 | IXGB_WRITE_REG(hw, TDT, 0); | |
733 | ||
734 | /* don't set up txdctl, it induces performance problems if configured | |
735 | * incorrectly */ | |
736 | /* Set the Tx Interrupt Delay register */ | |
737 | ||
738 | IXGB_WRITE_REG(hw, TIDV, adapter->tx_int_delay); | |
739 | ||
740 | /* Program the Transmit Control Register */ | |
741 | ||
742 | tctl = IXGB_TCTL_TCE | IXGB_TCTL_TXEN | IXGB_TCTL_TPDE; | |
743 | IXGB_WRITE_REG(hw, TCTL, tctl); | |
744 | ||
745 | /* Setup Transmit Descriptor Settings for this adapter */ | |
746 | adapter->tx_cmd_type = | |
747 | IXGB_TX_DESC_TYPE | |
748 | | (adapter->tx_int_delay_enable ? IXGB_TX_DESC_CMD_IDE : 0); | |
749 | } | |
750 | ||
751 | /** | |
752 | * ixgb_setup_rx_resources - allocate Rx resources (Descriptors) | |
753 | * @adapter: board private structure | |
754 | * | |
755 | * Returns 0 on success, negative on failure | |
756 | **/ | |
757 | ||
758 | int | |
759 | ixgb_setup_rx_resources(struct ixgb_adapter *adapter) | |
760 | { | |
761 | struct ixgb_desc_ring *rxdr = &adapter->rx_ring; | |
762 | struct pci_dev *pdev = adapter->pdev; | |
763 | int size; | |
764 | ||
765 | size = sizeof(struct ixgb_buffer) * rxdr->count; | |
766 | rxdr->buffer_info = vmalloc(size); | |
767 | if(!rxdr->buffer_info) { | |
ec9c3f5d AK |
768 | DPRINTK(PROBE, ERR, |
769 | "Unable to allocate receive descriptor ring\n"); | |
1da177e4 LT |
770 | return -ENOMEM; |
771 | } | |
772 | memset(rxdr->buffer_info, 0, size); | |
773 | ||
774 | /* Round up to nearest 4K */ | |
775 | ||
776 | rxdr->size = rxdr->count * sizeof(struct ixgb_rx_desc); | |
777 | IXGB_ROUNDUP(rxdr->size, 4096); | |
778 | ||
779 | rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma); | |
780 | ||
781 | if(!rxdr->desc) { | |
782 | vfree(rxdr->buffer_info); | |
ec9c3f5d AK |
783 | DPRINTK(PROBE, ERR, |
784 | "Unable to allocate receive descriptors\n"); | |
1da177e4 LT |
785 | return -ENOMEM; |
786 | } | |
787 | memset(rxdr->desc, 0, rxdr->size); | |
788 | ||
789 | rxdr->next_to_clean = 0; | |
790 | rxdr->next_to_use = 0; | |
791 | ||
792 | return 0; | |
793 | } | |
794 | ||
795 | /** | |
796 | * ixgb_setup_rctl - configure the receive control register | |
797 | * @adapter: Board private structure | |
798 | **/ | |
799 | ||
800 | static void | |
801 | ixgb_setup_rctl(struct ixgb_adapter *adapter) | |
802 | { | |
803 | uint32_t rctl; | |
804 | ||
805 | rctl = IXGB_READ_REG(&adapter->hw, RCTL); | |
806 | ||
807 | rctl &= ~(3 << IXGB_RCTL_MO_SHIFT); | |
808 | ||
809 | rctl |= | |
810 | IXGB_RCTL_BAM | IXGB_RCTL_RDMTS_1_2 | | |
811 | IXGB_RCTL_RXEN | IXGB_RCTL_CFF | | |
812 | (adapter->hw.mc_filter_type << IXGB_RCTL_MO_SHIFT); | |
813 | ||
814 | rctl |= IXGB_RCTL_SECRC; | |
815 | ||
3f3dc0dd | 816 | if (adapter->rx_buffer_len <= IXGB_RXBUFFER_2048) |
1da177e4 | 817 | rctl |= IXGB_RCTL_BSIZE_2048; |
3f3dc0dd | 818 | else if (adapter->rx_buffer_len <= IXGB_RXBUFFER_4096) |
1da177e4 | 819 | rctl |= IXGB_RCTL_BSIZE_4096; |
3f3dc0dd | 820 | else if (adapter->rx_buffer_len <= IXGB_RXBUFFER_8192) |
1da177e4 | 821 | rctl |= IXGB_RCTL_BSIZE_8192; |
3f3dc0dd | 822 | else if (adapter->rx_buffer_len <= IXGB_RXBUFFER_16384) |
1da177e4 | 823 | rctl |= IXGB_RCTL_BSIZE_16384; |
1da177e4 LT |
824 | |
825 | IXGB_WRITE_REG(&adapter->hw, RCTL, rctl); | |
826 | } | |
827 | ||
828 | /** | |
829 | * ixgb_configure_rx - Configure 82597 Receive Unit after Reset. | |
830 | * @adapter: board private structure | |
831 | * | |
832 | * Configure the Rx unit of the MAC after a reset. | |
833 | **/ | |
834 | ||
835 | static void | |
836 | ixgb_configure_rx(struct ixgb_adapter *adapter) | |
837 | { | |
838 | uint64_t rdba = adapter->rx_ring.dma; | |
839 | uint32_t rdlen = adapter->rx_ring.count * sizeof(struct ixgb_rx_desc); | |
840 | struct ixgb_hw *hw = &adapter->hw; | |
841 | uint32_t rctl; | |
842 | uint32_t rxcsum; | |
843 | uint32_t rxdctl; | |
844 | ||
845 | /* make sure receives are disabled while setting up the descriptors */ | |
846 | ||
847 | rctl = IXGB_READ_REG(hw, RCTL); | |
848 | IXGB_WRITE_REG(hw, RCTL, rctl & ~IXGB_RCTL_RXEN); | |
849 | ||
850 | /* set the Receive Delay Timer Register */ | |
851 | ||
852 | IXGB_WRITE_REG(hw, RDTR, adapter->rx_int_delay); | |
853 | ||
854 | /* Setup the Base and Length of the Rx Descriptor Ring */ | |
855 | ||
856 | IXGB_WRITE_REG(hw, RDBAL, (rdba & 0x00000000ffffffffULL)); | |
857 | IXGB_WRITE_REG(hw, RDBAH, (rdba >> 32)); | |
858 | ||
859 | IXGB_WRITE_REG(hw, RDLEN, rdlen); | |
860 | ||
861 | /* Setup the HW Rx Head and Tail Descriptor Pointers */ | |
862 | IXGB_WRITE_REG(hw, RDH, 0); | |
863 | IXGB_WRITE_REG(hw, RDT, 0); | |
864 | ||
865 | /* set up pre-fetching of receive buffers so we get some before we | |
866 | * run out (default hardware behavior is to run out before fetching | |
867 | * more). This sets up to fetch if HTHRESH rx descriptors are avail | |
868 | * and the descriptors in hw cache are below PTHRESH. This avoids | |
869 | * the hardware behavior of fetching <=512 descriptors in a single | |
870 | * burst that pre-empts all other activity, usually causing fifo | |
871 | * overflows. */ | |
872 | /* use WTHRESH to burst write 16 descriptors or burst when RXT0 */ | |
873 | rxdctl = RXDCTL_WTHRESH_DEFAULT << IXGB_RXDCTL_WTHRESH_SHIFT | | |
874 | RXDCTL_HTHRESH_DEFAULT << IXGB_RXDCTL_HTHRESH_SHIFT | | |
875 | RXDCTL_PTHRESH_DEFAULT << IXGB_RXDCTL_PTHRESH_SHIFT; | |
876 | IXGB_WRITE_REG(hw, RXDCTL, rxdctl); | |
877 | ||
878 | /* Enable Receive Checksum Offload for TCP and UDP */ | |
879 | if(adapter->rx_csum == TRUE) { | |
880 | rxcsum = IXGB_READ_REG(hw, RXCSUM); | |
881 | rxcsum |= IXGB_RXCSUM_TUOFL; | |
882 | IXGB_WRITE_REG(hw, RXCSUM, rxcsum); | |
883 | } | |
884 | ||
885 | /* Enable Receives */ | |
886 | ||
887 | IXGB_WRITE_REG(hw, RCTL, rctl); | |
888 | } | |
889 | ||
890 | /** | |
891 | * ixgb_free_tx_resources - Free Tx Resources | |
892 | * @adapter: board private structure | |
893 | * | |
894 | * Free all transmit software resources | |
895 | **/ | |
896 | ||
897 | void | |
898 | ixgb_free_tx_resources(struct ixgb_adapter *adapter) | |
899 | { | |
900 | struct pci_dev *pdev = adapter->pdev; | |
901 | ||
902 | ixgb_clean_tx_ring(adapter); | |
903 | ||
904 | vfree(adapter->tx_ring.buffer_info); | |
905 | adapter->tx_ring.buffer_info = NULL; | |
906 | ||
907 | pci_free_consistent(pdev, adapter->tx_ring.size, | |
908 | adapter->tx_ring.desc, adapter->tx_ring.dma); | |
909 | ||
910 | adapter->tx_ring.desc = NULL; | |
911 | } | |
912 | ||
235949d1 | 913 | static void |
1da177e4 LT |
914 | ixgb_unmap_and_free_tx_resource(struct ixgb_adapter *adapter, |
915 | struct ixgb_buffer *buffer_info) | |
916 | { | |
917 | struct pci_dev *pdev = adapter->pdev; | |
1dfdd7df AK |
918 | |
919 | if (buffer_info->dma) | |
920 | pci_unmap_page(pdev, buffer_info->dma, buffer_info->length, | |
921 | PCI_DMA_TODEVICE); | |
922 | ||
923 | if (buffer_info->skb) | |
1da177e4 | 924 | dev_kfree_skb_any(buffer_info->skb); |
1dfdd7df AK |
925 | |
926 | buffer_info->skb = NULL; | |
927 | buffer_info->dma = 0; | |
928 | buffer_info->time_stamp = 0; | |
929 | /* these fields must always be initialized in tx | |
930 | * buffer_info->length = 0; | |
931 | * buffer_info->next_to_watch = 0; */ | |
1da177e4 LT |
932 | } |
933 | ||
934 | /** | |
935 | * ixgb_clean_tx_ring - Free Tx Buffers | |
936 | * @adapter: board private structure | |
937 | **/ | |
938 | ||
939 | static void | |
940 | ixgb_clean_tx_ring(struct ixgb_adapter *adapter) | |
941 | { | |
942 | struct ixgb_desc_ring *tx_ring = &adapter->tx_ring; | |
943 | struct ixgb_buffer *buffer_info; | |
944 | unsigned long size; | |
945 | unsigned int i; | |
946 | ||
947 | /* Free all the Tx ring sk_buffs */ | |
948 | ||
949 | for(i = 0; i < tx_ring->count; i++) { | |
950 | buffer_info = &tx_ring->buffer_info[i]; | |
951 | ixgb_unmap_and_free_tx_resource(adapter, buffer_info); | |
952 | } | |
953 | ||
954 | size = sizeof(struct ixgb_buffer) * tx_ring->count; | |
955 | memset(tx_ring->buffer_info, 0, size); | |
956 | ||
957 | /* Zero out the descriptor ring */ | |
958 | ||
959 | memset(tx_ring->desc, 0, tx_ring->size); | |
960 | ||
961 | tx_ring->next_to_use = 0; | |
962 | tx_ring->next_to_clean = 0; | |
963 | ||
964 | IXGB_WRITE_REG(&adapter->hw, TDH, 0); | |
965 | IXGB_WRITE_REG(&adapter->hw, TDT, 0); | |
966 | } | |
967 | ||
968 | /** | |
969 | * ixgb_free_rx_resources - Free Rx Resources | |
970 | * @adapter: board private structure | |
971 | * | |
972 | * Free all receive software resources | |
973 | **/ | |
974 | ||
975 | void | |
976 | ixgb_free_rx_resources(struct ixgb_adapter *adapter) | |
977 | { | |
978 | struct ixgb_desc_ring *rx_ring = &adapter->rx_ring; | |
979 | struct pci_dev *pdev = adapter->pdev; | |
980 | ||
981 | ixgb_clean_rx_ring(adapter); | |
982 | ||
983 | vfree(rx_ring->buffer_info); | |
984 | rx_ring->buffer_info = NULL; | |
985 | ||
986 | pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma); | |
987 | ||
988 | rx_ring->desc = NULL; | |
989 | } | |
990 | ||
991 | /** | |
992 | * ixgb_clean_rx_ring - Free Rx Buffers | |
993 | * @adapter: board private structure | |
994 | **/ | |
995 | ||
996 | static void | |
997 | ixgb_clean_rx_ring(struct ixgb_adapter *adapter) | |
998 | { | |
999 | struct ixgb_desc_ring *rx_ring = &adapter->rx_ring; | |
1000 | struct ixgb_buffer *buffer_info; | |
1001 | struct pci_dev *pdev = adapter->pdev; | |
1002 | unsigned long size; | |
1003 | unsigned int i; | |
1004 | ||
1005 | /* Free all the Rx ring sk_buffs */ | |
1006 | ||
1007 | for(i = 0; i < rx_ring->count; i++) { | |
1008 | buffer_info = &rx_ring->buffer_info[i]; | |
1009 | if(buffer_info->skb) { | |
1010 | ||
1011 | pci_unmap_single(pdev, | |
1012 | buffer_info->dma, | |
1013 | buffer_info->length, | |
1014 | PCI_DMA_FROMDEVICE); | |
1015 | ||
1016 | dev_kfree_skb(buffer_info->skb); | |
1017 | ||
1018 | buffer_info->skb = NULL; | |
1019 | } | |
1020 | } | |
1021 | ||
1022 | size = sizeof(struct ixgb_buffer) * rx_ring->count; | |
1023 | memset(rx_ring->buffer_info, 0, size); | |
1024 | ||
1025 | /* Zero out the descriptor ring */ | |
1026 | ||
1027 | memset(rx_ring->desc, 0, rx_ring->size); | |
1028 | ||
1029 | rx_ring->next_to_clean = 0; | |
1030 | rx_ring->next_to_use = 0; | |
1031 | ||
1032 | IXGB_WRITE_REG(&adapter->hw, RDH, 0); | |
1033 | IXGB_WRITE_REG(&adapter->hw, RDT, 0); | |
1034 | } | |
1035 | ||
1036 | /** | |
1037 | * ixgb_set_mac - Change the Ethernet Address of the NIC | |
1038 | * @netdev: network interface device structure | |
1039 | * @p: pointer to an address structure | |
1040 | * | |
1041 | * Returns 0 on success, negative on failure | |
1042 | **/ | |
1043 | ||
1044 | static int | |
1045 | ixgb_set_mac(struct net_device *netdev, void *p) | |
1046 | { | |
8908c6cd | 1047 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
1048 | struct sockaddr *addr = p; |
1049 | ||
1050 | if(!is_valid_ether_addr(addr->sa_data)) | |
1051 | return -EADDRNOTAVAIL; | |
1052 | ||
1053 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
1054 | ||
1055 | ixgb_rar_set(&adapter->hw, addr->sa_data, 0); | |
1056 | ||
1057 | return 0; | |
1058 | } | |
1059 | ||
1060 | /** | |
1061 | * ixgb_set_multi - Multicast and Promiscuous mode set | |
1062 | * @netdev: network interface device structure | |
1063 | * | |
1064 | * The set_multi entry point is called whenever the multicast address | |
1065 | * list or the network interface flags are updated. This routine is | |
1066 | * responsible for configuring the hardware for proper multicast, | |
1067 | * promiscuous mode, and all-multi behavior. | |
1068 | **/ | |
1069 | ||
1070 | static void | |
1071 | ixgb_set_multi(struct net_device *netdev) | |
1072 | { | |
8908c6cd | 1073 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
1074 | struct ixgb_hw *hw = &adapter->hw; |
1075 | struct dev_mc_list *mc_ptr; | |
1076 | uint32_t rctl; | |
1077 | int i; | |
1078 | ||
1079 | /* Check for Promiscuous and All Multicast modes */ | |
1080 | ||
1081 | rctl = IXGB_READ_REG(hw, RCTL); | |
1082 | ||
1083 | if(netdev->flags & IFF_PROMISC) { | |
1084 | rctl |= (IXGB_RCTL_UPE | IXGB_RCTL_MPE); | |
1085 | } else if(netdev->flags & IFF_ALLMULTI) { | |
1086 | rctl |= IXGB_RCTL_MPE; | |
1087 | rctl &= ~IXGB_RCTL_UPE; | |
1088 | } else { | |
1089 | rctl &= ~(IXGB_RCTL_UPE | IXGB_RCTL_MPE); | |
1090 | } | |
1091 | ||
1092 | if(netdev->mc_count > IXGB_MAX_NUM_MULTICAST_ADDRESSES) { | |
1093 | rctl |= IXGB_RCTL_MPE; | |
1094 | IXGB_WRITE_REG(hw, RCTL, rctl); | |
1095 | } else { | |
1096 | uint8_t mta[netdev->mc_count * IXGB_ETH_LENGTH_OF_ADDRESS]; | |
1097 | ||
1098 | IXGB_WRITE_REG(hw, RCTL, rctl); | |
1099 | ||
1100 | for(i = 0, mc_ptr = netdev->mc_list; mc_ptr; | |
1101 | i++, mc_ptr = mc_ptr->next) | |
1102 | memcpy(&mta[i * IXGB_ETH_LENGTH_OF_ADDRESS], | |
1103 | mc_ptr->dmi_addr, IXGB_ETH_LENGTH_OF_ADDRESS); | |
1104 | ||
1105 | ixgb_mc_addr_list_update(hw, mta, netdev->mc_count, 0); | |
1106 | } | |
1107 | } | |
1108 | ||
1109 | /** | |
1110 | * ixgb_watchdog - Timer Call-back | |
1111 | * @data: pointer to netdev cast into an unsigned long | |
1112 | **/ | |
1113 | ||
1114 | static void | |
1115 | ixgb_watchdog(unsigned long data) | |
1116 | { | |
1117 | struct ixgb_adapter *adapter = (struct ixgb_adapter *)data; | |
1118 | struct net_device *netdev = adapter->netdev; | |
1119 | struct ixgb_desc_ring *txdr = &adapter->tx_ring; | |
1120 | ||
1121 | ixgb_check_for_link(&adapter->hw); | |
1122 | ||
1123 | if (ixgb_check_for_bad_link(&adapter->hw)) { | |
1124 | /* force the reset path */ | |
1125 | netif_stop_queue(netdev); | |
1126 | } | |
1127 | ||
1128 | if(adapter->hw.link_up) { | |
1129 | if(!netif_carrier_ok(netdev)) { | |
ec9c3f5d AK |
1130 | DPRINTK(LINK, INFO, |
1131 | "NIC Link is Up 10000 Mbps Full Duplex\n"); | |
1da177e4 LT |
1132 | adapter->link_speed = 10000; |
1133 | adapter->link_duplex = FULL_DUPLEX; | |
1134 | netif_carrier_on(netdev); | |
1135 | netif_wake_queue(netdev); | |
1136 | } | |
1137 | } else { | |
1138 | if(netif_carrier_ok(netdev)) { | |
1139 | adapter->link_speed = 0; | |
1140 | adapter->link_duplex = 0; | |
ec9c3f5d | 1141 | DPRINTK(LINK, INFO, "NIC Link is Down\n"); |
1da177e4 LT |
1142 | netif_carrier_off(netdev); |
1143 | netif_stop_queue(netdev); | |
1144 | ||
1145 | } | |
1146 | } | |
1147 | ||
1148 | ixgb_update_stats(adapter); | |
1149 | ||
1150 | if(!netif_carrier_ok(netdev)) { | |
1151 | if(IXGB_DESC_UNUSED(txdr) + 1 < txdr->count) { | |
1152 | /* We've lost link, so the controller stops DMA, | |
1153 | * but we've got queued Tx work that's never going | |
1154 | * to get done, so reset controller to flush Tx. | |
1155 | * (Do the reset outside of interrupt context). */ | |
1156 | schedule_work(&adapter->tx_timeout_task); | |
1157 | } | |
1158 | } | |
1159 | ||
1160 | /* Force detection of hung controller every watchdog period */ | |
1161 | adapter->detect_tx_hung = TRUE; | |
1162 | ||
1163 | /* generate an interrupt to force clean up of any stragglers */ | |
1164 | IXGB_WRITE_REG(&adapter->hw, ICS, IXGB_INT_TXDW); | |
1165 | ||
1166 | /* Reset the timer */ | |
1167 | mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ); | |
1168 | } | |
1169 | ||
1170 | #define IXGB_TX_FLAGS_CSUM 0x00000001 | |
1171 | #define IXGB_TX_FLAGS_VLAN 0x00000002 | |
1172 | #define IXGB_TX_FLAGS_TSO 0x00000004 | |
1173 | ||
235949d1 | 1174 | static int |
1da177e4 LT |
1175 | ixgb_tso(struct ixgb_adapter *adapter, struct sk_buff *skb) |
1176 | { | |
1da177e4 LT |
1177 | struct ixgb_context_desc *context_desc; |
1178 | unsigned int i; | |
1179 | uint8_t ipcss, ipcso, tucss, tucso, hdr_len; | |
1180 | uint16_t ipcse, tucse, mss; | |
1181 | int err; | |
1182 | ||
89114afd | 1183 | if (likely(skb_is_gso(skb))) { |
adc54139 | 1184 | struct ixgb_buffer *buffer_info; |
1da177e4 LT |
1185 | if (skb_header_cloned(skb)) { |
1186 | err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); | |
1187 | if (err) | |
1188 | return err; | |
1189 | } | |
1190 | ||
1191 | hdr_len = ((skb->h.raw - skb->data) + (skb->h.th->doff << 2)); | |
7967168c | 1192 | mss = skb_shinfo(skb)->gso_size; |
1da177e4 LT |
1193 | skb->nh.iph->tot_len = 0; |
1194 | skb->nh.iph->check = 0; | |
1195 | skb->h.th->check = ~csum_tcpudp_magic(skb->nh.iph->saddr, | |
1196 | skb->nh.iph->daddr, | |
1197 | 0, IPPROTO_TCP, 0); | |
1198 | ipcss = skb->nh.raw - skb->data; | |
1199 | ipcso = (void *)&(skb->nh.iph->check) - (void *)skb->data; | |
1200 | ipcse = skb->h.raw - skb->data - 1; | |
1201 | tucss = skb->h.raw - skb->data; | |
1202 | tucso = (void *)&(skb->h.th->check) - (void *)skb->data; | |
1203 | tucse = 0; | |
1204 | ||
1205 | i = adapter->tx_ring.next_to_use; | |
1206 | context_desc = IXGB_CONTEXT_DESC(adapter->tx_ring, i); | |
adc54139 JB |
1207 | buffer_info = &adapter->tx_ring.buffer_info[i]; |
1208 | WARN_ON(buffer_info->dma != 0); | |
1da177e4 LT |
1209 | |
1210 | context_desc->ipcss = ipcss; | |
1211 | context_desc->ipcso = ipcso; | |
1212 | context_desc->ipcse = cpu_to_le16(ipcse); | |
1213 | context_desc->tucss = tucss; | |
1214 | context_desc->tucso = tucso; | |
1215 | context_desc->tucse = cpu_to_le16(tucse); | |
1216 | context_desc->mss = cpu_to_le16(mss); | |
1217 | context_desc->hdr_len = hdr_len; | |
1218 | context_desc->status = 0; | |
1219 | context_desc->cmd_type_len = cpu_to_le32( | |
1220 | IXGB_CONTEXT_DESC_TYPE | |
1221 | | IXGB_CONTEXT_DESC_CMD_TSE | |
1222 | | IXGB_CONTEXT_DESC_CMD_IP | |
1223 | | IXGB_CONTEXT_DESC_CMD_TCP | |
1da177e4 LT |
1224 | | IXGB_CONTEXT_DESC_CMD_IDE |
1225 | | (skb->len - (hdr_len))); | |
1226 | ||
06c2f9ec | 1227 | |
1da177e4 LT |
1228 | if(++i == adapter->tx_ring.count) i = 0; |
1229 | adapter->tx_ring.next_to_use = i; | |
1230 | ||
1231 | return 1; | |
1232 | } | |
1da177e4 LT |
1233 | |
1234 | return 0; | |
1235 | } | |
1236 | ||
235949d1 | 1237 | static boolean_t |
1da177e4 LT |
1238 | ixgb_tx_csum(struct ixgb_adapter *adapter, struct sk_buff *skb) |
1239 | { | |
1240 | struct ixgb_context_desc *context_desc; | |
1241 | unsigned int i; | |
1242 | uint8_t css, cso; | |
1243 | ||
84fa7933 | 1244 | if(likely(skb->ip_summed == CHECKSUM_PARTIAL)) { |
adc54139 | 1245 | struct ixgb_buffer *buffer_info; |
1da177e4 | 1246 | css = skb->h.raw - skb->data; |
ff1dcadb | 1247 | cso = css + skb->csum_offset; |
1da177e4 LT |
1248 | |
1249 | i = adapter->tx_ring.next_to_use; | |
1250 | context_desc = IXGB_CONTEXT_DESC(adapter->tx_ring, i); | |
adc54139 JB |
1251 | buffer_info = &adapter->tx_ring.buffer_info[i]; |
1252 | WARN_ON(buffer_info->dma != 0); | |
1da177e4 LT |
1253 | |
1254 | context_desc->tucss = css; | |
1255 | context_desc->tucso = cso; | |
1256 | context_desc->tucse = 0; | |
1257 | /* zero out any previously existing data in one instruction */ | |
1258 | *(uint32_t *)&(context_desc->ipcss) = 0; | |
1259 | context_desc->status = 0; | |
1260 | context_desc->hdr_len = 0; | |
1261 | context_desc->mss = 0; | |
1262 | context_desc->cmd_type_len = | |
1263 | cpu_to_le32(IXGB_CONTEXT_DESC_TYPE | |
06c2f9ec | 1264 | | IXGB_TX_DESC_CMD_IDE); |
1da177e4 LT |
1265 | |
1266 | if(++i == adapter->tx_ring.count) i = 0; | |
1267 | adapter->tx_ring.next_to_use = i; | |
1268 | ||
1269 | return TRUE; | |
1270 | } | |
1271 | ||
1272 | return FALSE; | |
1273 | } | |
1274 | ||
1275 | #define IXGB_MAX_TXD_PWR 14 | |
1276 | #define IXGB_MAX_DATA_PER_TXD (1<<IXGB_MAX_TXD_PWR) | |
1277 | ||
235949d1 | 1278 | static int |
1da177e4 LT |
1279 | ixgb_tx_map(struct ixgb_adapter *adapter, struct sk_buff *skb, |
1280 | unsigned int first) | |
1281 | { | |
1282 | struct ixgb_desc_ring *tx_ring = &adapter->tx_ring; | |
1283 | struct ixgb_buffer *buffer_info; | |
1284 | int len = skb->len; | |
1285 | unsigned int offset = 0, size, count = 0, i; | |
5d927853 | 1286 | unsigned int mss = skb_shinfo(skb)->gso_size; |
1da177e4 LT |
1287 | |
1288 | unsigned int nr_frags = skb_shinfo(skb)->nr_frags; | |
1289 | unsigned int f; | |
ac79c82e | 1290 | |
1da177e4 LT |
1291 | len -= skb->data_len; |
1292 | ||
1293 | i = tx_ring->next_to_use; | |
1294 | ||
1295 | while(len) { | |
1296 | buffer_info = &tx_ring->buffer_info[i]; | |
709cf018 | 1297 | size = min(len, IXGB_MAX_DATA_PER_TXD); |
5d927853 JB |
1298 | /* Workaround for premature desc write-backs |
1299 | * in TSO mode. Append 4-byte sentinel desc */ | |
1300 | if (unlikely(mss && !nr_frags && size == len && size > 8)) | |
1301 | size -= 4; | |
1302 | ||
1da177e4 | 1303 | buffer_info->length = size; |
adc54139 | 1304 | WARN_ON(buffer_info->dma != 0); |
1da177e4 LT |
1305 | buffer_info->dma = |
1306 | pci_map_single(adapter->pdev, | |
1307 | skb->data + offset, | |
1308 | size, | |
1309 | PCI_DMA_TODEVICE); | |
1310 | buffer_info->time_stamp = jiffies; | |
1dfdd7df | 1311 | buffer_info->next_to_watch = 0; |
1da177e4 LT |
1312 | |
1313 | len -= size; | |
1314 | offset += size; | |
1315 | count++; | |
1316 | if(++i == tx_ring->count) i = 0; | |
1317 | } | |
1318 | ||
1319 | for(f = 0; f < nr_frags; f++) { | |
1320 | struct skb_frag_struct *frag; | |
1321 | ||
1322 | frag = &skb_shinfo(skb)->frags[f]; | |
1323 | len = frag->size; | |
1324 | offset = 0; | |
1325 | ||
1326 | while(len) { | |
1327 | buffer_info = &tx_ring->buffer_info[i]; | |
709cf018 | 1328 | size = min(len, IXGB_MAX_DATA_PER_TXD); |
5d927853 JB |
1329 | |
1330 | /* Workaround for premature desc write-backs | |
1331 | * in TSO mode. Append 4-byte sentinel desc */ | |
1332 | if (unlikely(mss && !nr_frags && size == len | |
1333 | && size > 8)) | |
1334 | size -= 4; | |
1335 | ||
1da177e4 LT |
1336 | buffer_info->length = size; |
1337 | buffer_info->dma = | |
1338 | pci_map_page(adapter->pdev, | |
1339 | frag->page, | |
1340 | frag->page_offset + offset, | |
1341 | size, | |
1342 | PCI_DMA_TODEVICE); | |
1343 | buffer_info->time_stamp = jiffies; | |
1dfdd7df | 1344 | buffer_info->next_to_watch = 0; |
1da177e4 LT |
1345 | |
1346 | len -= size; | |
1347 | offset += size; | |
1348 | count++; | |
1349 | if(++i == tx_ring->count) i = 0; | |
1350 | } | |
1351 | } | |
1352 | i = (i == 0) ? tx_ring->count - 1 : i - 1; | |
1353 | tx_ring->buffer_info[i].skb = skb; | |
1354 | tx_ring->buffer_info[first].next_to_watch = i; | |
1355 | ||
1356 | return count; | |
1357 | } | |
1358 | ||
235949d1 | 1359 | static void |
1da177e4 LT |
1360 | ixgb_tx_queue(struct ixgb_adapter *adapter, int count, int vlan_id,int tx_flags) |
1361 | { | |
1362 | struct ixgb_desc_ring *tx_ring = &adapter->tx_ring; | |
1363 | struct ixgb_tx_desc *tx_desc = NULL; | |
1364 | struct ixgb_buffer *buffer_info; | |
1365 | uint32_t cmd_type_len = adapter->tx_cmd_type; | |
1366 | uint8_t status = 0; | |
1367 | uint8_t popts = 0; | |
1368 | unsigned int i; | |
1369 | ||
1370 | if(tx_flags & IXGB_TX_FLAGS_TSO) { | |
1371 | cmd_type_len |= IXGB_TX_DESC_CMD_TSE; | |
1372 | popts |= (IXGB_TX_DESC_POPTS_IXSM | IXGB_TX_DESC_POPTS_TXSM); | |
1373 | } | |
1374 | ||
1375 | if(tx_flags & IXGB_TX_FLAGS_CSUM) | |
1376 | popts |= IXGB_TX_DESC_POPTS_TXSM; | |
1377 | ||
1378 | if(tx_flags & IXGB_TX_FLAGS_VLAN) { | |
1379 | cmd_type_len |= IXGB_TX_DESC_CMD_VLE; | |
1380 | } | |
1381 | ||
1382 | i = tx_ring->next_to_use; | |
1383 | ||
1384 | while(count--) { | |
1385 | buffer_info = &tx_ring->buffer_info[i]; | |
1386 | tx_desc = IXGB_TX_DESC(*tx_ring, i); | |
1387 | tx_desc->buff_addr = cpu_to_le64(buffer_info->dma); | |
1388 | tx_desc->cmd_type_len = | |
1389 | cpu_to_le32(cmd_type_len | buffer_info->length); | |
1390 | tx_desc->status = status; | |
1391 | tx_desc->popts = popts; | |
1392 | tx_desc->vlan = cpu_to_le16(vlan_id); | |
1393 | ||
1394 | if(++i == tx_ring->count) i = 0; | |
1395 | } | |
1396 | ||
1397 | tx_desc->cmd_type_len |= cpu_to_le32(IXGB_TX_DESC_CMD_EOP | |
1398 | | IXGB_TX_DESC_CMD_RS ); | |
1399 | ||
1400 | /* Force memory writes to complete before letting h/w | |
1401 | * know there are new descriptors to fetch. (Only | |
1402 | * applicable for weak-ordered memory model archs, | |
1403 | * such as IA-64). */ | |
1404 | wmb(); | |
1405 | ||
1406 | tx_ring->next_to_use = i; | |
1407 | IXGB_WRITE_REG(&adapter->hw, TDT, i); | |
1408 | } | |
1409 | ||
dfd341e4 JB |
1410 | static int __ixgb_maybe_stop_tx(struct net_device *netdev, int size) |
1411 | { | |
1412 | struct ixgb_adapter *adapter = netdev_priv(netdev); | |
1413 | struct ixgb_desc_ring *tx_ring = &adapter->tx_ring; | |
1414 | ||
1415 | netif_stop_queue(netdev); | |
1416 | /* Herbert's original patch had: | |
1417 | * smp_mb__after_netif_stop_queue(); | |
1418 | * but since that doesn't exist yet, just open code it. */ | |
1419 | smp_mb(); | |
1420 | ||
1421 | /* We need to check again in a case another CPU has just | |
1422 | * made room available. */ | |
1423 | if (likely(IXGB_DESC_UNUSED(tx_ring) < size)) | |
1424 | return -EBUSY; | |
1425 | ||
1426 | /* A reprieve! */ | |
1427 | netif_start_queue(netdev); | |
1428 | ++adapter->restart_queue; | |
1429 | return 0; | |
1430 | } | |
1431 | ||
1432 | static int ixgb_maybe_stop_tx(struct net_device *netdev, | |
1433 | struct ixgb_desc_ring *tx_ring, int size) | |
1434 | { | |
1435 | if (likely(IXGB_DESC_UNUSED(tx_ring) >= size)) | |
1436 | return 0; | |
1437 | return __ixgb_maybe_stop_tx(netdev, size); | |
1438 | } | |
1439 | ||
1440 | ||
1da177e4 LT |
1441 | /* Tx Descriptors needed, worst case */ |
1442 | #define TXD_USE_COUNT(S) (((S) >> IXGB_MAX_TXD_PWR) + \ | |
1443 | (((S) & (IXGB_MAX_DATA_PER_TXD - 1)) ? 1 : 0)) | |
5d927853 JB |
1444 | #define DESC_NEEDED TXD_USE_COUNT(IXGB_MAX_DATA_PER_TXD) /* skb->date */ + \ |
1445 | MAX_SKB_FRAGS * TXD_USE_COUNT(PAGE_SIZE) + 1 /* for context */ \ | |
1446 | + 1 /* one more needed for sentinel TSO workaround */ | |
1da177e4 LT |
1447 | |
1448 | static int | |
1449 | ixgb_xmit_frame(struct sk_buff *skb, struct net_device *netdev) | |
1450 | { | |
8908c6cd | 1451 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
1452 | unsigned int first; |
1453 | unsigned int tx_flags = 0; | |
1454 | unsigned long flags; | |
1455 | int vlan_id = 0; | |
1456 | int tso; | |
1457 | ||
1458 | if(skb->len <= 0) { | |
1459 | dev_kfree_skb_any(skb); | |
1460 | return 0; | |
1461 | } | |
1462 | ||
f017f14b AK |
1463 | #ifdef NETIF_F_LLTX |
1464 | local_irq_save(flags); | |
1465 | if (!spin_trylock(&adapter->tx_lock)) { | |
1466 | /* Collision - tell upper layer to requeue */ | |
1467 | local_irq_restore(flags); | |
1468 | return NETDEV_TX_LOCKED; | |
1469 | } | |
1470 | #else | |
1da177e4 | 1471 | spin_lock_irqsave(&adapter->tx_lock, flags); |
f017f14b AK |
1472 | #endif |
1473 | ||
dfd341e4 JB |
1474 | if (unlikely(ixgb_maybe_stop_tx(netdev, &adapter->tx_ring, |
1475 | DESC_NEEDED))) { | |
1da177e4 LT |
1476 | netif_stop_queue(netdev); |
1477 | spin_unlock_irqrestore(&adapter->tx_lock, flags); | |
f017f14b | 1478 | return NETDEV_TX_BUSY; |
1da177e4 | 1479 | } |
f017f14b AK |
1480 | |
1481 | #ifndef NETIF_F_LLTX | |
1da177e4 | 1482 | spin_unlock_irqrestore(&adapter->tx_lock, flags); |
f017f14b | 1483 | #endif |
1da177e4 LT |
1484 | |
1485 | if(adapter->vlgrp && vlan_tx_tag_present(skb)) { | |
1486 | tx_flags |= IXGB_TX_FLAGS_VLAN; | |
1487 | vlan_id = vlan_tx_tag_get(skb); | |
1488 | } | |
1489 | ||
1490 | first = adapter->tx_ring.next_to_use; | |
1491 | ||
1492 | tso = ixgb_tso(adapter, skb); | |
1493 | if (tso < 0) { | |
1494 | dev_kfree_skb_any(skb); | |
f017f14b AK |
1495 | #ifdef NETIF_F_LLTX |
1496 | spin_unlock_irqrestore(&adapter->tx_lock, flags); | |
1497 | #endif | |
1da177e4 LT |
1498 | return NETDEV_TX_OK; |
1499 | } | |
1500 | ||
96f9c2e2 | 1501 | if (likely(tso)) |
1da177e4 LT |
1502 | tx_flags |= IXGB_TX_FLAGS_TSO; |
1503 | else if(ixgb_tx_csum(adapter, skb)) | |
1504 | tx_flags |= IXGB_TX_FLAGS_CSUM; | |
1505 | ||
1506 | ixgb_tx_queue(adapter, ixgb_tx_map(adapter, skb, first), vlan_id, | |
1507 | tx_flags); | |
1508 | ||
1509 | netdev->trans_start = jiffies; | |
1510 | ||
f017f14b AK |
1511 | #ifdef NETIF_F_LLTX |
1512 | /* Make sure there is space in the ring for the next send. */ | |
dfd341e4 | 1513 | ixgb_maybe_stop_tx(netdev, &adapter->tx_ring, DESC_NEEDED); |
f017f14b AK |
1514 | |
1515 | spin_unlock_irqrestore(&adapter->tx_lock, flags); | |
1516 | ||
1517 | #endif | |
1518 | return NETDEV_TX_OK; | |
1da177e4 LT |
1519 | } |
1520 | ||
1521 | /** | |
1522 | * ixgb_tx_timeout - Respond to a Tx Hang | |
1523 | * @netdev: network interface device structure | |
1524 | **/ | |
1525 | ||
1526 | static void | |
1527 | ixgb_tx_timeout(struct net_device *netdev) | |
1528 | { | |
8908c6cd | 1529 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
1530 | |
1531 | /* Do the reset outside of interrupt context */ | |
1532 | schedule_work(&adapter->tx_timeout_task); | |
1533 | } | |
1534 | ||
1535 | static void | |
c4028958 | 1536 | ixgb_tx_timeout_task(struct work_struct *work) |
1da177e4 | 1537 | { |
c4028958 DH |
1538 | struct ixgb_adapter *adapter = |
1539 | container_of(work, struct ixgb_adapter, tx_timeout_task); | |
1da177e4 | 1540 | |
9b8118df | 1541 | adapter->tx_timeout_count++; |
1da177e4 LT |
1542 | ixgb_down(adapter, TRUE); |
1543 | ixgb_up(adapter); | |
1544 | } | |
1545 | ||
1546 | /** | |
1547 | * ixgb_get_stats - Get System Network Statistics | |
1548 | * @netdev: network interface device structure | |
1549 | * | |
1550 | * Returns the address of the device statistics structure. | |
1551 | * The statistics are actually updated from the timer callback. | |
1552 | **/ | |
1553 | ||
1554 | static struct net_device_stats * | |
1555 | ixgb_get_stats(struct net_device *netdev) | |
1556 | { | |
8908c6cd | 1557 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
1558 | |
1559 | return &adapter->net_stats; | |
1560 | } | |
1561 | ||
1562 | /** | |
1563 | * ixgb_change_mtu - Change the Maximum Transfer Unit | |
1564 | * @netdev: network interface device structure | |
1565 | * @new_mtu: new value for maximum frame size | |
1566 | * | |
1567 | * Returns 0 on success, negative on failure | |
1568 | **/ | |
1569 | ||
1570 | static int | |
1571 | ixgb_change_mtu(struct net_device *netdev, int new_mtu) | |
1572 | { | |
8908c6cd | 1573 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
1574 | int max_frame = new_mtu + ENET_HEADER_SIZE + ENET_FCS_LENGTH; |
1575 | int old_max_frame = netdev->mtu + ENET_HEADER_SIZE + ENET_FCS_LENGTH; | |
1576 | ||
1577 | ||
1578 | if((max_frame < IXGB_MIN_ENET_FRAME_SIZE_WITHOUT_FCS + ENET_FCS_LENGTH) | |
1579 | || (max_frame > IXGB_MAX_JUMBO_FRAME_SIZE + ENET_FCS_LENGTH)) { | |
ec9c3f5d | 1580 | DPRINTK(PROBE, ERR, "Invalid MTU setting %d\n", new_mtu); |
1da177e4 LT |
1581 | return -EINVAL; |
1582 | } | |
1583 | ||
3f3dc0dd | 1584 | adapter->rx_buffer_len = max_frame; |
1da177e4 LT |
1585 | |
1586 | netdev->mtu = new_mtu; | |
1587 | ||
3f3dc0dd | 1588 | if ((old_max_frame != max_frame) && netif_running(netdev)) { |
1da177e4 LT |
1589 | ixgb_down(adapter, TRUE); |
1590 | ixgb_up(adapter); | |
1591 | } | |
1592 | ||
1593 | return 0; | |
1594 | } | |
1595 | ||
1596 | /** | |
1597 | * ixgb_update_stats - Update the board statistics counters. | |
1598 | * @adapter: board private structure | |
1599 | **/ | |
1600 | ||
1601 | void | |
1602 | ixgb_update_stats(struct ixgb_adapter *adapter) | |
1603 | { | |
5633684d | 1604 | struct net_device *netdev = adapter->netdev; |
01748fbb LV |
1605 | struct pci_dev *pdev = adapter->pdev; |
1606 | ||
1607 | /* Prevent stats update while adapter is being reset */ | |
1608 | if (pdev->error_state && pdev->error_state != pci_channel_io_normal) | |
1609 | return; | |
5633684d MC |
1610 | |
1611 | if((netdev->flags & IFF_PROMISC) || (netdev->flags & IFF_ALLMULTI) || | |
1612 | (netdev->mc_count > IXGB_MAX_NUM_MULTICAST_ADDRESSES)) { | |
1613 | u64 multi = IXGB_READ_REG(&adapter->hw, MPRCL); | |
1614 | u32 bcast_l = IXGB_READ_REG(&adapter->hw, BPRCL); | |
1615 | u32 bcast_h = IXGB_READ_REG(&adapter->hw, BPRCH); | |
1616 | u64 bcast = ((u64)bcast_h << 32) | bcast_l; | |
1617 | ||
1618 | multi |= ((u64)IXGB_READ_REG(&adapter->hw, MPRCH) << 32); | |
1619 | /* fix up multicast stats by removing broadcasts */ | |
7b89178d MC |
1620 | if(multi >= bcast) |
1621 | multi -= bcast; | |
5633684d MC |
1622 | |
1623 | adapter->stats.mprcl += (multi & 0xFFFFFFFF); | |
1624 | adapter->stats.mprch += (multi >> 32); | |
1625 | adapter->stats.bprcl += bcast_l; | |
1626 | adapter->stats.bprch += bcast_h; | |
1627 | } else { | |
1628 | adapter->stats.mprcl += IXGB_READ_REG(&adapter->hw, MPRCL); | |
1629 | adapter->stats.mprch += IXGB_READ_REG(&adapter->hw, MPRCH); | |
1630 | adapter->stats.bprcl += IXGB_READ_REG(&adapter->hw, BPRCL); | |
1631 | adapter->stats.bprch += IXGB_READ_REG(&adapter->hw, BPRCH); | |
1632 | } | |
1da177e4 LT |
1633 | adapter->stats.tprl += IXGB_READ_REG(&adapter->hw, TPRL); |
1634 | adapter->stats.tprh += IXGB_READ_REG(&adapter->hw, TPRH); | |
1635 | adapter->stats.gprcl += IXGB_READ_REG(&adapter->hw, GPRCL); | |
1636 | adapter->stats.gprch += IXGB_READ_REG(&adapter->hw, GPRCH); | |
1da177e4 LT |
1637 | adapter->stats.uprcl += IXGB_READ_REG(&adapter->hw, UPRCL); |
1638 | adapter->stats.uprch += IXGB_READ_REG(&adapter->hw, UPRCH); | |
1639 | adapter->stats.vprcl += IXGB_READ_REG(&adapter->hw, VPRCL); | |
1640 | adapter->stats.vprch += IXGB_READ_REG(&adapter->hw, VPRCH); | |
1641 | adapter->stats.jprcl += IXGB_READ_REG(&adapter->hw, JPRCL); | |
1642 | adapter->stats.jprch += IXGB_READ_REG(&adapter->hw, JPRCH); | |
1643 | adapter->stats.gorcl += IXGB_READ_REG(&adapter->hw, GORCL); | |
1644 | adapter->stats.gorch += IXGB_READ_REG(&adapter->hw, GORCH); | |
1645 | adapter->stats.torl += IXGB_READ_REG(&adapter->hw, TORL); | |
1646 | adapter->stats.torh += IXGB_READ_REG(&adapter->hw, TORH); | |
1647 | adapter->stats.rnbc += IXGB_READ_REG(&adapter->hw, RNBC); | |
1648 | adapter->stats.ruc += IXGB_READ_REG(&adapter->hw, RUC); | |
1649 | adapter->stats.roc += IXGB_READ_REG(&adapter->hw, ROC); | |
1650 | adapter->stats.rlec += IXGB_READ_REG(&adapter->hw, RLEC); | |
1651 | adapter->stats.crcerrs += IXGB_READ_REG(&adapter->hw, CRCERRS); | |
1652 | adapter->stats.icbc += IXGB_READ_REG(&adapter->hw, ICBC); | |
1653 | adapter->stats.ecbc += IXGB_READ_REG(&adapter->hw, ECBC); | |
1654 | adapter->stats.mpc += IXGB_READ_REG(&adapter->hw, MPC); | |
1655 | adapter->stats.tptl += IXGB_READ_REG(&adapter->hw, TPTL); | |
1656 | adapter->stats.tpth += IXGB_READ_REG(&adapter->hw, TPTH); | |
1657 | adapter->stats.gptcl += IXGB_READ_REG(&adapter->hw, GPTCL); | |
1658 | adapter->stats.gptch += IXGB_READ_REG(&adapter->hw, GPTCH); | |
1659 | adapter->stats.bptcl += IXGB_READ_REG(&adapter->hw, BPTCL); | |
1660 | adapter->stats.bptch += IXGB_READ_REG(&adapter->hw, BPTCH); | |
1661 | adapter->stats.mptcl += IXGB_READ_REG(&adapter->hw, MPTCL); | |
1662 | adapter->stats.mptch += IXGB_READ_REG(&adapter->hw, MPTCH); | |
1663 | adapter->stats.uptcl += IXGB_READ_REG(&adapter->hw, UPTCL); | |
1664 | adapter->stats.uptch += IXGB_READ_REG(&adapter->hw, UPTCH); | |
1665 | adapter->stats.vptcl += IXGB_READ_REG(&adapter->hw, VPTCL); | |
1666 | adapter->stats.vptch += IXGB_READ_REG(&adapter->hw, VPTCH); | |
1667 | adapter->stats.jptcl += IXGB_READ_REG(&adapter->hw, JPTCL); | |
1668 | adapter->stats.jptch += IXGB_READ_REG(&adapter->hw, JPTCH); | |
1669 | adapter->stats.gotcl += IXGB_READ_REG(&adapter->hw, GOTCL); | |
1670 | adapter->stats.gotch += IXGB_READ_REG(&adapter->hw, GOTCH); | |
1671 | adapter->stats.totl += IXGB_READ_REG(&adapter->hw, TOTL); | |
1672 | adapter->stats.toth += IXGB_READ_REG(&adapter->hw, TOTH); | |
1673 | adapter->stats.dc += IXGB_READ_REG(&adapter->hw, DC); | |
1674 | adapter->stats.plt64c += IXGB_READ_REG(&adapter->hw, PLT64C); | |
1675 | adapter->stats.tsctc += IXGB_READ_REG(&adapter->hw, TSCTC); | |
1676 | adapter->stats.tsctfc += IXGB_READ_REG(&adapter->hw, TSCTFC); | |
1677 | adapter->stats.ibic += IXGB_READ_REG(&adapter->hw, IBIC); | |
1678 | adapter->stats.rfc += IXGB_READ_REG(&adapter->hw, RFC); | |
1679 | adapter->stats.lfc += IXGB_READ_REG(&adapter->hw, LFC); | |
1680 | adapter->stats.pfrc += IXGB_READ_REG(&adapter->hw, PFRC); | |
1681 | adapter->stats.pftc += IXGB_READ_REG(&adapter->hw, PFTC); | |
1682 | adapter->stats.mcfrc += IXGB_READ_REG(&adapter->hw, MCFRC); | |
1683 | adapter->stats.mcftc += IXGB_READ_REG(&adapter->hw, MCFTC); | |
1684 | adapter->stats.xonrxc += IXGB_READ_REG(&adapter->hw, XONRXC); | |
1685 | adapter->stats.xontxc += IXGB_READ_REG(&adapter->hw, XONTXC); | |
1686 | adapter->stats.xoffrxc += IXGB_READ_REG(&adapter->hw, XOFFRXC); | |
1687 | adapter->stats.xofftxc += IXGB_READ_REG(&adapter->hw, XOFFTXC); | |
1688 | adapter->stats.rjc += IXGB_READ_REG(&adapter->hw, RJC); | |
1689 | ||
1690 | /* Fill out the OS statistics structure */ | |
1691 | ||
1692 | adapter->net_stats.rx_packets = adapter->stats.gprcl; | |
1693 | adapter->net_stats.tx_packets = adapter->stats.gptcl; | |
1694 | adapter->net_stats.rx_bytes = adapter->stats.gorcl; | |
1695 | adapter->net_stats.tx_bytes = adapter->stats.gotcl; | |
1696 | adapter->net_stats.multicast = adapter->stats.mprcl; | |
1697 | adapter->net_stats.collisions = 0; | |
1698 | ||
1699 | /* ignore RLEC as it reports errors for padded (<64bytes) frames | |
1700 | * with a length in the type/len field */ | |
1701 | adapter->net_stats.rx_errors = | |
1702 | /* adapter->stats.rnbc + */ adapter->stats.crcerrs + | |
1703 | adapter->stats.ruc + | |
1704 | adapter->stats.roc /*+ adapter->stats.rlec */ + | |
1705 | adapter->stats.icbc + | |
1706 | adapter->stats.ecbc + adapter->stats.mpc; | |
1707 | ||
1da177e4 LT |
1708 | /* see above |
1709 | * adapter->net_stats.rx_length_errors = adapter->stats.rlec; | |
1710 | */ | |
1711 | ||
1712 | adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs; | |
1713 | adapter->net_stats.rx_fifo_errors = adapter->stats.mpc; | |
1714 | adapter->net_stats.rx_missed_errors = adapter->stats.mpc; | |
1715 | adapter->net_stats.rx_over_errors = adapter->stats.mpc; | |
1716 | ||
1717 | adapter->net_stats.tx_errors = 0; | |
1718 | adapter->net_stats.rx_frame_errors = 0; | |
1719 | adapter->net_stats.tx_aborted_errors = 0; | |
1720 | adapter->net_stats.tx_carrier_errors = 0; | |
1721 | adapter->net_stats.tx_fifo_errors = 0; | |
1722 | adapter->net_stats.tx_heartbeat_errors = 0; | |
1723 | adapter->net_stats.tx_window_errors = 0; | |
1724 | } | |
1725 | ||
1726 | #define IXGB_MAX_INTR 10 | |
1727 | /** | |
1728 | * ixgb_intr - Interrupt Handler | |
1729 | * @irq: interrupt number | |
1730 | * @data: pointer to a network interface device structure | |
1da177e4 LT |
1731 | **/ |
1732 | ||
1733 | static irqreturn_t | |
7d12e780 | 1734 | ixgb_intr(int irq, void *data) |
1da177e4 LT |
1735 | { |
1736 | struct net_device *netdev = data; | |
8908c6cd | 1737 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
1738 | struct ixgb_hw *hw = &adapter->hw; |
1739 | uint32_t icr = IXGB_READ_REG(hw, ICR); | |
1740 | #ifndef CONFIG_IXGB_NAPI | |
1741 | unsigned int i; | |
1742 | #endif | |
1743 | ||
1744 | if(unlikely(!icr)) | |
1745 | return IRQ_NONE; /* Not our interrupt */ | |
1746 | ||
1747 | if(unlikely(icr & (IXGB_INT_RXSEQ | IXGB_INT_LSC))) { | |
1748 | mod_timer(&adapter->watchdog_timer, jiffies); | |
1749 | } | |
1750 | ||
1751 | #ifdef CONFIG_IXGB_NAPI | |
1752 | if(netif_rx_schedule_prep(netdev)) { | |
1753 | ||
1754 | /* Disable interrupts and register for poll. The flush | |
1755 | of the posted write is intentionally left out. | |
1756 | */ | |
1757 | ||
1758 | atomic_inc(&adapter->irq_sem); | |
1759 | IXGB_WRITE_REG(&adapter->hw, IMC, ~0); | |
1760 | __netif_rx_schedule(netdev); | |
1761 | } | |
1762 | #else | |
1763 | /* yes, that is actually a & and it is meant to make sure that | |
1764 | * every pass through this for loop checks both receive and | |
1765 | * transmit queues for completed descriptors, intended to | |
1766 | * avoid starvation issues and assist tx/rx fairness. */ | |
1767 | for(i = 0; i < IXGB_MAX_INTR; i++) | |
1768 | if(!ixgb_clean_rx_irq(adapter) & | |
1769 | !ixgb_clean_tx_irq(adapter)) | |
1770 | break; | |
1771 | #endif | |
1772 | return IRQ_HANDLED; | |
1773 | } | |
1774 | ||
1775 | #ifdef CONFIG_IXGB_NAPI | |
1776 | /** | |
1777 | * ixgb_clean - NAPI Rx polling callback | |
1778 | * @adapter: board private structure | |
1779 | **/ | |
1780 | ||
1781 | static int | |
1782 | ixgb_clean(struct net_device *netdev, int *budget) | |
1783 | { | |
8908c6cd | 1784 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
1785 | int work_to_do = min(*budget, netdev->quota); |
1786 | int tx_cleaned; | |
1787 | int work_done = 0; | |
1788 | ||
1789 | tx_cleaned = ixgb_clean_tx_irq(adapter); | |
1790 | ixgb_clean_rx_irq(adapter, &work_done, work_to_do); | |
1791 | ||
1792 | *budget -= work_done; | |
1793 | netdev->quota -= work_done; | |
1794 | ||
1795 | /* if no Tx and not enough Rx work done, exit the polling mode */ | |
1796 | if((!tx_cleaned && (work_done == 0)) || !netif_running(netdev)) { | |
1797 | netif_rx_complete(netdev); | |
1798 | ixgb_irq_enable(adapter); | |
1799 | return 0; | |
1800 | } | |
1801 | ||
1802 | return 1; | |
1803 | } | |
1804 | #endif | |
1805 | ||
1806 | /** | |
1807 | * ixgb_clean_tx_irq - Reclaim resources after transmit completes | |
1808 | * @adapter: board private structure | |
1809 | **/ | |
1810 | ||
1811 | static boolean_t | |
1812 | ixgb_clean_tx_irq(struct ixgb_adapter *adapter) | |
1813 | { | |
1814 | struct ixgb_desc_ring *tx_ring = &adapter->tx_ring; | |
1815 | struct net_device *netdev = adapter->netdev; | |
1816 | struct ixgb_tx_desc *tx_desc, *eop_desc; | |
1817 | struct ixgb_buffer *buffer_info; | |
1818 | unsigned int i, eop; | |
1819 | boolean_t cleaned = FALSE; | |
1820 | ||
1821 | i = tx_ring->next_to_clean; | |
1822 | eop = tx_ring->buffer_info[i].next_to_watch; | |
1823 | eop_desc = IXGB_TX_DESC(*tx_ring, eop); | |
1824 | ||
1825 | while(eop_desc->status & IXGB_TX_DESC_STATUS_DD) { | |
1826 | ||
1827 | for(cleaned = FALSE; !cleaned; ) { | |
1828 | tx_desc = IXGB_TX_DESC(*tx_ring, i); | |
1829 | buffer_info = &tx_ring->buffer_info[i]; | |
1830 | ||
1831 | if (tx_desc->popts | |
1832 | & (IXGB_TX_DESC_POPTS_TXSM | | |
1833 | IXGB_TX_DESC_POPTS_IXSM)) | |
1834 | adapter->hw_csum_tx_good++; | |
1835 | ||
1836 | ixgb_unmap_and_free_tx_resource(adapter, buffer_info); | |
1837 | ||
1838 | *(uint32_t *)&(tx_desc->status) = 0; | |
1839 | ||
1840 | cleaned = (i == eop); | |
1841 | if(++i == tx_ring->count) i = 0; | |
1842 | } | |
1843 | ||
1844 | eop = tx_ring->buffer_info[i].next_to_watch; | |
1845 | eop_desc = IXGB_TX_DESC(*tx_ring, eop); | |
1846 | } | |
1847 | ||
1848 | tx_ring->next_to_clean = i; | |
1849 | ||
3352a3b2 AK |
1850 | if (unlikely(netif_queue_stopped(netdev))) { |
1851 | spin_lock(&adapter->tx_lock); | |
1852 | if (netif_queue_stopped(netdev) && netif_carrier_ok(netdev) && | |
ab8ced2f | 1853 | (IXGB_DESC_UNUSED(tx_ring) >= DESC_NEEDED)) |
3352a3b2 AK |
1854 | netif_wake_queue(netdev); |
1855 | spin_unlock(&adapter->tx_lock); | |
1da177e4 | 1856 | } |
1da177e4 LT |
1857 | |
1858 | if(adapter->detect_tx_hung) { | |
1859 | /* detect a transmit hang in hardware, this serializes the | |
1860 | * check with the clearing of time_stamp and movement of i */ | |
1861 | adapter->detect_tx_hung = FALSE; | |
9b8118df AK |
1862 | if (tx_ring->buffer_info[eop].dma && |
1863 | time_after(jiffies, tx_ring->buffer_info[eop].time_stamp + HZ) | |
1da177e4 | 1864 | && !(IXGB_READ_REG(&adapter->hw, STATUS) & |
9b8118df AK |
1865 | IXGB_STATUS_TXOFF)) { |
1866 | /* detected Tx unit hang */ | |
1867 | DPRINTK(DRV, ERR, "Detected Tx Unit Hang\n" | |
1868 | " TDH <%x>\n" | |
1869 | " TDT <%x>\n" | |
1870 | " next_to_use <%x>\n" | |
1871 | " next_to_clean <%x>\n" | |
1872 | "buffer_info[next_to_clean]\n" | |
1873 | " time_stamp <%lx>\n" | |
1874 | " next_to_watch <%x>\n" | |
1875 | " jiffies <%lx>\n" | |
1876 | " next_to_watch.status <%x>\n", | |
1877 | IXGB_READ_REG(&adapter->hw, TDH), | |
1878 | IXGB_READ_REG(&adapter->hw, TDT), | |
1879 | tx_ring->next_to_use, | |
1880 | tx_ring->next_to_clean, | |
1881 | tx_ring->buffer_info[eop].time_stamp, | |
1882 | eop, | |
1883 | jiffies, | |
1884 | eop_desc->status); | |
1da177e4 | 1885 | netif_stop_queue(netdev); |
9b8118df | 1886 | } |
1da177e4 LT |
1887 | } |
1888 | ||
1889 | return cleaned; | |
1890 | } | |
1891 | ||
1892 | /** | |
1893 | * ixgb_rx_checksum - Receive Checksum Offload for 82597. | |
1894 | * @adapter: board private structure | |
1895 | * @rx_desc: receive descriptor | |
1896 | * @sk_buff: socket buffer with received data | |
1897 | **/ | |
1898 | ||
235949d1 | 1899 | static void |
1da177e4 LT |
1900 | ixgb_rx_checksum(struct ixgb_adapter *adapter, |
1901 | struct ixgb_rx_desc *rx_desc, | |
1902 | struct sk_buff *skb) | |
1903 | { | |
1904 | /* Ignore Checksum bit is set OR | |
1905 | * TCP Checksum has not been calculated | |
1906 | */ | |
1907 | if((rx_desc->status & IXGB_RX_DESC_STATUS_IXSM) || | |
1908 | (!(rx_desc->status & IXGB_RX_DESC_STATUS_TCPCS))) { | |
1909 | skb->ip_summed = CHECKSUM_NONE; | |
1910 | return; | |
1911 | } | |
1912 | ||
1913 | /* At this point we know the hardware did the TCP checksum */ | |
1914 | /* now look at the TCP checksum error bit */ | |
1915 | if(rx_desc->errors & IXGB_RX_DESC_ERRORS_TCPE) { | |
1916 | /* let the stack verify checksum errors */ | |
1917 | skb->ip_summed = CHECKSUM_NONE; | |
1918 | adapter->hw_csum_rx_error++; | |
1919 | } else { | |
1920 | /* TCP checksum is good */ | |
1921 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
1922 | adapter->hw_csum_rx_good++; | |
1923 | } | |
1924 | } | |
1925 | ||
1926 | /** | |
1927 | * ixgb_clean_rx_irq - Send received data up the network stack, | |
1928 | * @adapter: board private structure | |
1929 | **/ | |
1930 | ||
1931 | static boolean_t | |
1932 | #ifdef CONFIG_IXGB_NAPI | |
1933 | ixgb_clean_rx_irq(struct ixgb_adapter *adapter, int *work_done, int work_to_do) | |
1934 | #else | |
1935 | ixgb_clean_rx_irq(struct ixgb_adapter *adapter) | |
1936 | #endif | |
1937 | { | |
1938 | struct ixgb_desc_ring *rx_ring = &adapter->rx_ring; | |
1939 | struct net_device *netdev = adapter->netdev; | |
1940 | struct pci_dev *pdev = adapter->pdev; | |
1941 | struct ixgb_rx_desc *rx_desc, *next_rxd; | |
1942 | struct ixgb_buffer *buffer_info, *next_buffer, *next2_buffer; | |
1da177e4 LT |
1943 | uint32_t length; |
1944 | unsigned int i, j; | |
1945 | boolean_t cleaned = FALSE; | |
1946 | ||
1947 | i = rx_ring->next_to_clean; | |
1948 | rx_desc = IXGB_RX_DESC(*rx_ring, i); | |
1949 | buffer_info = &rx_ring->buffer_info[i]; | |
1950 | ||
1951 | while(rx_desc->status & IXGB_RX_DESC_STATUS_DD) { | |
f404de1c MC |
1952 | struct sk_buff *skb, *next_skb; |
1953 | u8 status; | |
1da177e4 LT |
1954 | |
1955 | #ifdef CONFIG_IXGB_NAPI | |
1956 | if(*work_done >= work_to_do) | |
1957 | break; | |
1958 | ||
1959 | (*work_done)++; | |
1960 | #endif | |
f404de1c | 1961 | status = rx_desc->status; |
1da177e4 | 1962 | skb = buffer_info->skb; |
1dfdd7df | 1963 | buffer_info->skb = NULL; |
f404de1c | 1964 | |
1da177e4 LT |
1965 | prefetch(skb->data); |
1966 | ||
1967 | if(++i == rx_ring->count) i = 0; | |
1968 | next_rxd = IXGB_RX_DESC(*rx_ring, i); | |
1969 | prefetch(next_rxd); | |
1970 | ||
1971 | if((j = i + 1) == rx_ring->count) j = 0; | |
1972 | next2_buffer = &rx_ring->buffer_info[j]; | |
1973 | prefetch(next2_buffer); | |
1974 | ||
1975 | next_buffer = &rx_ring->buffer_info[i]; | |
1976 | next_skb = next_buffer->skb; | |
1977 | prefetch(next_skb); | |
1978 | ||
1da177e4 LT |
1979 | cleaned = TRUE; |
1980 | ||
1981 | pci_unmap_single(pdev, | |
1982 | buffer_info->dma, | |
1983 | buffer_info->length, | |
1984 | PCI_DMA_FROMDEVICE); | |
1985 | ||
1986 | length = le16_to_cpu(rx_desc->length); | |
1987 | ||
f404de1c | 1988 | if(unlikely(!(status & IXGB_RX_DESC_STATUS_EOP))) { |
1da177e4 LT |
1989 | |
1990 | /* All receives must fit into a single buffer */ | |
1991 | ||
1992 | IXGB_DBG("Receive packet consumed multiple buffers " | |
1993 | "length<%x>\n", length); | |
1994 | ||
1995 | dev_kfree_skb_irq(skb); | |
f404de1c | 1996 | goto rxdesc_done; |
1da177e4 LT |
1997 | } |
1998 | ||
1999 | if (unlikely(rx_desc->errors | |
2000 | & (IXGB_RX_DESC_ERRORS_CE | IXGB_RX_DESC_ERRORS_SE | |
2001 | | IXGB_RX_DESC_ERRORS_P | | |
2002 | IXGB_RX_DESC_ERRORS_RXE))) { | |
2003 | ||
2004 | dev_kfree_skb_irq(skb); | |
f404de1c | 2005 | goto rxdesc_done; |
1da177e4 LT |
2006 | } |
2007 | ||
6b900bb4 AK |
2008 | /* code added for copybreak, this should improve |
2009 | * performance for small packets with large amounts | |
2010 | * of reassembly being done in the stack */ | |
2011 | #define IXGB_CB_LENGTH 256 | |
2012 | if (length < IXGB_CB_LENGTH) { | |
2013 | struct sk_buff *new_skb = | |
5791704f | 2014 | netdev_alloc_skb(netdev, length + NET_IP_ALIGN); |
6b900bb4 AK |
2015 | if (new_skb) { |
2016 | skb_reserve(new_skb, NET_IP_ALIGN); | |
6b900bb4 AK |
2017 | memcpy(new_skb->data - NET_IP_ALIGN, |
2018 | skb->data - NET_IP_ALIGN, | |
2019 | length + NET_IP_ALIGN); | |
2020 | /* save the skb in buffer_info as good */ | |
2021 | buffer_info->skb = skb; | |
2022 | skb = new_skb; | |
2023 | } | |
2024 | } | |
2025 | /* end copybreak code */ | |
2026 | ||
1da177e4 LT |
2027 | /* Good Receive */ |
2028 | skb_put(skb, length); | |
2029 | ||
2030 | /* Receive Checksum Offload */ | |
2031 | ixgb_rx_checksum(adapter, rx_desc, skb); | |
2032 | ||
2033 | skb->protocol = eth_type_trans(skb, netdev); | |
2034 | #ifdef CONFIG_IXGB_NAPI | |
f404de1c | 2035 | if(adapter->vlgrp && (status & IXGB_RX_DESC_STATUS_VP)) { |
1da177e4 LT |
2036 | vlan_hwaccel_receive_skb(skb, adapter->vlgrp, |
2037 | le16_to_cpu(rx_desc->special) & | |
2038 | IXGB_RX_DESC_SPECIAL_VLAN_MASK); | |
2039 | } else { | |
2040 | netif_receive_skb(skb); | |
2041 | } | |
2042 | #else /* CONFIG_IXGB_NAPI */ | |
f404de1c | 2043 | if(adapter->vlgrp && (status & IXGB_RX_DESC_STATUS_VP)) { |
1da177e4 LT |
2044 | vlan_hwaccel_rx(skb, adapter->vlgrp, |
2045 | le16_to_cpu(rx_desc->special) & | |
2046 | IXGB_RX_DESC_SPECIAL_VLAN_MASK); | |
2047 | } else { | |
2048 | netif_rx(skb); | |
2049 | } | |
2050 | #endif /* CONFIG_IXGB_NAPI */ | |
2051 | netdev->last_rx = jiffies; | |
2052 | ||
f404de1c MC |
2053 | rxdesc_done: |
2054 | /* clean up descriptor, might be written over by hw */ | |
1da177e4 | 2055 | rx_desc->status = 0; |
1da177e4 | 2056 | |
f404de1c | 2057 | /* use prefetched values */ |
1da177e4 LT |
2058 | rx_desc = next_rxd; |
2059 | buffer_info = next_buffer; | |
2060 | } | |
2061 | ||
2062 | rx_ring->next_to_clean = i; | |
2063 | ||
2064 | ixgb_alloc_rx_buffers(adapter); | |
2065 | ||
2066 | return cleaned; | |
2067 | } | |
2068 | ||
2069 | /** | |
2070 | * ixgb_alloc_rx_buffers - Replace used receive buffers | |
2071 | * @adapter: address of board private structure | |
2072 | **/ | |
2073 | ||
2074 | static void | |
2075 | ixgb_alloc_rx_buffers(struct ixgb_adapter *adapter) | |
2076 | { | |
2077 | struct ixgb_desc_ring *rx_ring = &adapter->rx_ring; | |
2078 | struct net_device *netdev = adapter->netdev; | |
2079 | struct pci_dev *pdev = adapter->pdev; | |
2080 | struct ixgb_rx_desc *rx_desc; | |
2081 | struct ixgb_buffer *buffer_info; | |
2082 | struct sk_buff *skb; | |
2083 | unsigned int i; | |
2084 | int num_group_tail_writes; | |
2085 | long cleancount; | |
2086 | ||
2087 | i = rx_ring->next_to_use; | |
2088 | buffer_info = &rx_ring->buffer_info[i]; | |
2089 | cleancount = IXGB_DESC_UNUSED(rx_ring); | |
2090 | ||
2091 | num_group_tail_writes = IXGB_RX_BUFFER_WRITE; | |
2092 | ||
41639fed MC |
2093 | /* leave three descriptors unused */ |
2094 | while(--cleancount > 2) { | |
1dfdd7df | 2095 | /* recycle! its good for you */ |
69c7a940 AK |
2096 | skb = buffer_info->skb; |
2097 | if (skb) { | |
1dfdd7df AK |
2098 | skb_trim(skb, 0); |
2099 | goto map_skb; | |
2100 | } | |
1da177e4 | 2101 | |
69c7a940 AK |
2102 | skb = netdev_alloc_skb(netdev, adapter->rx_buffer_len |
2103 | + NET_IP_ALIGN); | |
1dfdd7df | 2104 | if (unlikely(!skb)) { |
1da177e4 | 2105 | /* Better luck next round */ |
1dfdd7df | 2106 | adapter->alloc_rx_buff_failed++; |
1da177e4 LT |
2107 | break; |
2108 | } | |
2109 | ||
2110 | /* Make buffer alignment 2 beyond a 16 byte boundary | |
2111 | * this will result in a 16 byte aligned IP header after | |
2112 | * the 14 byte MAC header is removed | |
2113 | */ | |
2114 | skb_reserve(skb, NET_IP_ALIGN); | |
2115 | ||
1da177e4 LT |
2116 | buffer_info->skb = skb; |
2117 | buffer_info->length = adapter->rx_buffer_len; | |
1dfdd7df AK |
2118 | map_skb: |
2119 | buffer_info->dma = pci_map_single(pdev, | |
2120 | skb->data, | |
2121 | adapter->rx_buffer_len, | |
2122 | PCI_DMA_FROMDEVICE); | |
1da177e4 | 2123 | |
1dfdd7df | 2124 | rx_desc = IXGB_RX_DESC(*rx_ring, i); |
1da177e4 | 2125 | rx_desc->buff_addr = cpu_to_le64(buffer_info->dma); |
41639fed MC |
2126 | /* guarantee DD bit not set now before h/w gets descriptor |
2127 | * this is the rest of the workaround for h/w double | |
2128 | * writeback. */ | |
2129 | rx_desc->status = 0; | |
1da177e4 | 2130 | |
1da177e4 LT |
2131 | |
2132 | if(++i == rx_ring->count) i = 0; | |
2133 | buffer_info = &rx_ring->buffer_info[i]; | |
2134 | } | |
2135 | ||
1dfdd7df AK |
2136 | if (likely(rx_ring->next_to_use != i)) { |
2137 | rx_ring->next_to_use = i; | |
2138 | if (unlikely(i-- == 0)) | |
2139 | i = (rx_ring->count - 1); | |
2140 | ||
2141 | /* Force memory writes to complete before letting h/w | |
2142 | * know there are new descriptors to fetch. (Only | |
2143 | * applicable for weak-ordered memory model archs, such | |
2144 | * as IA-64). */ | |
2145 | wmb(); | |
2146 | IXGB_WRITE_REG(&adapter->hw, RDT, i); | |
2147 | } | |
1da177e4 LT |
2148 | } |
2149 | ||
2150 | /** | |
2151 | * ixgb_vlan_rx_register - enables or disables vlan tagging/stripping. | |
2152 | * | |
2153 | * @param netdev network interface device structure | |
2154 | * @param grp indicates to enable or disable tagging/stripping | |
2155 | **/ | |
2156 | static void | |
2157 | ixgb_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp) | |
2158 | { | |
8908c6cd | 2159 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
2160 | uint32_t ctrl, rctl; |
2161 | ||
2162 | ixgb_irq_disable(adapter); | |
2163 | adapter->vlgrp = grp; | |
2164 | ||
2165 | if(grp) { | |
2166 | /* enable VLAN tag insert/strip */ | |
2167 | ctrl = IXGB_READ_REG(&adapter->hw, CTRL0); | |
2168 | ctrl |= IXGB_CTRL0_VME; | |
2169 | IXGB_WRITE_REG(&adapter->hw, CTRL0, ctrl); | |
2170 | ||
2171 | /* enable VLAN receive filtering */ | |
2172 | ||
2173 | rctl = IXGB_READ_REG(&adapter->hw, RCTL); | |
2174 | rctl |= IXGB_RCTL_VFE; | |
2175 | rctl &= ~IXGB_RCTL_CFIEN; | |
2176 | IXGB_WRITE_REG(&adapter->hw, RCTL, rctl); | |
2177 | } else { | |
2178 | /* disable VLAN tag insert/strip */ | |
2179 | ||
2180 | ctrl = IXGB_READ_REG(&adapter->hw, CTRL0); | |
2181 | ctrl &= ~IXGB_CTRL0_VME; | |
2182 | IXGB_WRITE_REG(&adapter->hw, CTRL0, ctrl); | |
2183 | ||
2184 | /* disable VLAN filtering */ | |
2185 | ||
2186 | rctl = IXGB_READ_REG(&adapter->hw, RCTL); | |
2187 | rctl &= ~IXGB_RCTL_VFE; | |
2188 | IXGB_WRITE_REG(&adapter->hw, RCTL, rctl); | |
2189 | } | |
2190 | ||
2191 | ixgb_irq_enable(adapter); | |
2192 | } | |
2193 | ||
2194 | static void | |
2195 | ixgb_vlan_rx_add_vid(struct net_device *netdev, uint16_t vid) | |
2196 | { | |
8908c6cd | 2197 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
2198 | uint32_t vfta, index; |
2199 | ||
2200 | /* add VID to filter table */ | |
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_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid) | |
2210 | { | |
8908c6cd | 2211 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
2212 | uint32_t vfta, index; |
2213 | ||
2214 | ixgb_irq_disable(adapter); | |
2215 | ||
2216 | if(adapter->vlgrp) | |
2217 | adapter->vlgrp->vlan_devices[vid] = NULL; | |
2218 | ||
2219 | ixgb_irq_enable(adapter); | |
2220 | ||
2221 | /* remove VID from filter table*/ | |
2222 | ||
2223 | index = (vid >> 5) & 0x7F; | |
2224 | vfta = IXGB_READ_REG_ARRAY(&adapter->hw, VFTA, index); | |
2225 | vfta &= ~(1 << (vid & 0x1F)); | |
2226 | ixgb_write_vfta(&adapter->hw, index, vfta); | |
2227 | } | |
2228 | ||
2229 | static void | |
2230 | ixgb_restore_vlan(struct ixgb_adapter *adapter) | |
2231 | { | |
2232 | ixgb_vlan_rx_register(adapter->netdev, adapter->vlgrp); | |
2233 | ||
2234 | if(adapter->vlgrp) { | |
2235 | uint16_t vid; | |
2236 | for(vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) { | |
2237 | if(!adapter->vlgrp->vlan_devices[vid]) | |
2238 | continue; | |
2239 | ixgb_vlan_rx_add_vid(adapter->netdev, vid); | |
2240 | } | |
2241 | } | |
2242 | } | |
2243 | ||
1da177e4 LT |
2244 | #ifdef CONFIG_NET_POLL_CONTROLLER |
2245 | /* | |
2246 | * Polling 'interrupt' - used by things like netconsole to send skbs | |
2247 | * without having to re-enable interrupts. It's not called while | |
2248 | * the interrupt routine is executing. | |
2249 | */ | |
2250 | ||
2251 | static void ixgb_netpoll(struct net_device *dev) | |
2252 | { | |
f990b426 | 2253 | struct ixgb_adapter *adapter = netdev_priv(dev); |
ac79c82e | 2254 | |
1da177e4 | 2255 | disable_irq(adapter->pdev->irq); |
7d12e780 | 2256 | ixgb_intr(adapter->pdev->irq, dev); |
1da177e4 LT |
2257 | enable_irq(adapter->pdev->irq); |
2258 | } | |
2259 | #endif | |
2260 | ||
01748fbb LV |
2261 | /** |
2262 | * ixgb_io_error_detected() - called when PCI error is detected | |
2263 | * @pdev pointer to pci device with error | |
2264 | * @state pci channel state after error | |
2265 | * | |
2266 | * This callback is called by the PCI subsystem whenever | |
2267 | * a PCI bus error is detected. | |
2268 | */ | |
2269 | static pci_ers_result_t ixgb_io_error_detected (struct pci_dev *pdev, | |
2270 | enum pci_channel_state state) | |
2271 | { | |
2272 | struct net_device *netdev = pci_get_drvdata(pdev); | |
f7d4fa01 | 2273 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
01748fbb LV |
2274 | |
2275 | if(netif_running(netdev)) | |
2276 | ixgb_down(adapter, TRUE); | |
2277 | ||
2278 | pci_disable_device(pdev); | |
2279 | ||
2280 | /* Request a slot reset. */ | |
2281 | return PCI_ERS_RESULT_NEED_RESET; | |
2282 | } | |
2283 | ||
2284 | /** | |
2285 | * ixgb_io_slot_reset - called after the pci bus has been reset. | |
2286 | * @pdev pointer to pci device with error | |
2287 | * | |
2288 | * This callback is called after the PCI buss has been reset. | |
2289 | * Basically, this tries to restart the card from scratch. | |
2290 | * This is a shortened version of the device probe/discovery code, | |
2291 | * it resembles the first-half of the ixgb_probe() routine. | |
2292 | */ | |
2293 | static pci_ers_result_t ixgb_io_slot_reset (struct pci_dev *pdev) | |
2294 | { | |
2295 | struct net_device *netdev = pci_get_drvdata(pdev); | |
f7d4fa01 | 2296 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
01748fbb LV |
2297 | |
2298 | if(pci_enable_device(pdev)) { | |
2299 | DPRINTK(PROBE, ERR, "Cannot re-enable PCI device after reset.\n"); | |
2300 | return PCI_ERS_RESULT_DISCONNECT; | |
2301 | } | |
2302 | ||
2303 | /* Perform card reset only on one instance of the card */ | |
2304 | if (0 != PCI_FUNC (pdev->devfn)) | |
2305 | return PCI_ERS_RESULT_RECOVERED; | |
2306 | ||
2307 | pci_set_master(pdev); | |
2308 | ||
2309 | netif_carrier_off(netdev); | |
2310 | netif_stop_queue(netdev); | |
2311 | ixgb_reset(adapter); | |
2312 | ||
2313 | /* Make sure the EEPROM is good */ | |
2314 | if(!ixgb_validate_eeprom_checksum(&adapter->hw)) { | |
2315 | DPRINTK(PROBE, ERR, "After reset, the EEPROM checksum is not valid.\n"); | |
2316 | return PCI_ERS_RESULT_DISCONNECT; | |
2317 | } | |
2318 | ixgb_get_ee_mac_addr(&adapter->hw, netdev->dev_addr); | |
2319 | memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len); | |
2320 | ||
2321 | if(!is_valid_ether_addr(netdev->perm_addr)) { | |
2322 | DPRINTK(PROBE, ERR, "After reset, invalid MAC address.\n"); | |
2323 | return PCI_ERS_RESULT_DISCONNECT; | |
2324 | } | |
2325 | ||
2326 | return PCI_ERS_RESULT_RECOVERED; | |
2327 | } | |
2328 | ||
2329 | /** | |
2330 | * ixgb_io_resume - called when its OK to resume normal operations | |
2331 | * @pdev pointer to pci device with error | |
2332 | * | |
2333 | * The error recovery driver tells us that its OK to resume | |
2334 | * normal operation. Implementation resembles the second-half | |
2335 | * of the ixgb_probe() routine. | |
2336 | */ | |
2337 | static void ixgb_io_resume (struct pci_dev *pdev) | |
2338 | { | |
2339 | struct net_device *netdev = pci_get_drvdata(pdev); | |
f7d4fa01 | 2340 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
01748fbb LV |
2341 | |
2342 | pci_set_master(pdev); | |
2343 | ||
2344 | if(netif_running(netdev)) { | |
2345 | if(ixgb_up(adapter)) { | |
2346 | printk ("ixgb: can't bring device back up after reset\n"); | |
2347 | return; | |
2348 | } | |
2349 | } | |
2350 | ||
2351 | netif_device_attach(netdev); | |
2352 | mod_timer(&adapter->watchdog_timer, jiffies); | |
2353 | } | |
2354 | ||
1da177e4 | 2355 | /* ixgb_main.c */ |