Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /******************************************************************************* |
2 | ||
0abb6eb1 AK |
3 | Intel PRO/10GbE Linux driver |
4 | Copyright(c) 1999 - 2006 Intel Corporation. | |
5 | ||
6 | This program is free software; you can redistribute it and/or modify it | |
7 | under the terms and conditions of the GNU General Public License, | |
8 | version 2, as published by the Free Software Foundation. | |
9 | ||
10 | This program is distributed in the hope it will be useful, but WITHOUT | |
11 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
12 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
1da177e4 | 13 | more details. |
0abb6eb1 | 14 | |
1da177e4 | 15 | You should have received a copy of the GNU General Public License along with |
0abb6eb1 AK |
16 | this program; if not, write to the Free Software Foundation, Inc., |
17 | 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. | |
18 | ||
19 | The full GNU General Public License is included in this distribution in | |
20 | the file called "COPYING". | |
21 | ||
1da177e4 LT |
22 | Contact Information: |
23 | Linux NICS <linux.nics@intel.com> | |
0abb6eb1 | 24 | e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> |
1da177e4 LT |
25 | Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
26 | ||
27 | *******************************************************************************/ | |
28 | ||
29 | #include "ixgb.h" | |
30 | ||
1da177e4 | 31 | char ixgb_driver_name[] = "ixgb"; |
e9ab1d14 | 32 | static char ixgb_driver_string[] = "Intel(R) PRO/10GbE Network Driver"; |
1da177e4 LT |
33 | |
34 | #ifndef CONFIG_IXGB_NAPI | |
35 | #define DRIVERNAPI | |
36 | #else | |
37 | #define DRIVERNAPI "-NAPI" | |
38 | #endif | |
8b32e63d | 39 | #define DRV_VERSION "1.0.126-k4"DRIVERNAPI |
273dc74e SH |
40 | const char ixgb_driver_version[] = DRV_VERSION; |
41 | static const char ixgb_copyright[] = "Copyright (c) 1999-2006 Intel Corporation."; | |
1da177e4 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); | |
446490ca | 70 | void ixgb_down(struct ixgb_adapter *adapter, bool kill_watchdog); |
1da177e4 LT |
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); |
446490ca | 97 | static bool ixgb_clean_tx_irq(struct ixgb_adapter *adapter); |
ac79c82e | 98 | |
1da177e4 | 99 | #ifdef CONFIG_IXGB_NAPI |
bea3348e | 100 | static int ixgb_clean(struct napi_struct *napi, int budget); |
446490ca JP |
101 | static bool ixgb_clean_rx_irq(struct ixgb_adapter *adapter, |
102 | int *work_done, int work_to_do); | |
1da177e4 | 103 | #else |
446490ca | 104 | static bool ixgb_clean_rx_irq(struct ixgb_adapter *adapter); |
1da177e4 LT |
105 | #endif |
106 | static void ixgb_alloc_rx_buffers(struct ixgb_adapter *adapter); | |
1da177e4 | 107 | static void ixgb_tx_timeout(struct net_device *dev); |
c4028958 | 108 | static void ixgb_tx_timeout_task(struct work_struct *work); |
1da177e4 LT |
109 | static void ixgb_vlan_rx_register(struct net_device *netdev, |
110 | struct vlan_group *grp); | |
222441a6 JP |
111 | static void ixgb_vlan_rx_add_vid(struct net_device *netdev, u16 vid); |
112 | static void ixgb_vlan_rx_kill_vid(struct net_device *netdev, u16 vid); | |
1da177e4 LT |
113 | static void ixgb_restore_vlan(struct ixgb_adapter *adapter); |
114 | ||
1da177e4 LT |
115 | #ifdef CONFIG_NET_POLL_CONTROLLER |
116 | /* for netdump / net console */ | |
117 | static void ixgb_netpoll(struct net_device *dev); | |
118 | #endif | |
119 | ||
01748fbb LV |
120 | static pci_ers_result_t ixgb_io_error_detected (struct pci_dev *pdev, |
121 | enum pci_channel_state state); | |
122 | static pci_ers_result_t ixgb_io_slot_reset (struct pci_dev *pdev); | |
123 | static void ixgb_io_resume (struct pci_dev *pdev); | |
1da177e4 | 124 | |
01748fbb LV |
125 | static struct pci_error_handlers ixgb_err_handler = { |
126 | .error_detected = ixgb_io_error_detected, | |
127 | .slot_reset = ixgb_io_slot_reset, | |
128 | .resume = ixgb_io_resume, | |
129 | }; | |
130 | ||
1da177e4 | 131 | static struct pci_driver ixgb_driver = { |
c2eba932 | 132 | .name = ixgb_driver_name, |
1da177e4 | 133 | .id_table = ixgb_pci_tbl, |
c2eba932 MC |
134 | .probe = ixgb_probe, |
135 | .remove = __devexit_p(ixgb_remove), | |
01748fbb | 136 | .err_handler = &ixgb_err_handler |
1da177e4 LT |
137 | }; |
138 | ||
139 | MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>"); | |
140 | MODULE_DESCRIPTION("Intel(R) PRO/10GbE Network Driver"); | |
141 | MODULE_LICENSE("GPL"); | |
01e5abc2 | 142 | MODULE_VERSION(DRV_VERSION); |
1da177e4 | 143 | |
ec9c3f5d AK |
144 | #define DEFAULT_DEBUG_LEVEL_SHIFT 3 |
145 | static int debug = DEFAULT_DEBUG_LEVEL_SHIFT; | |
146 | module_param(debug, int, 0); | |
147 | MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)"); | |
148 | ||
1da177e4 LT |
149 | /** |
150 | * ixgb_init_module - Driver Registration Routine | |
151 | * | |
152 | * ixgb_init_module is the first routine called when the driver is | |
153 | * loaded. All it does is register with the PCI subsystem. | |
154 | **/ | |
155 | ||
156 | static int __init | |
157 | ixgb_init_module(void) | |
158 | { | |
1da177e4 LT |
159 | printk(KERN_INFO "%s - version %s\n", |
160 | ixgb_driver_string, ixgb_driver_version); | |
161 | ||
162 | printk(KERN_INFO "%s\n", ixgb_copyright); | |
163 | ||
29917620 | 164 | return pci_register_driver(&ixgb_driver); |
1da177e4 LT |
165 | } |
166 | ||
167 | module_init(ixgb_init_module); | |
168 | ||
169 | /** | |
170 | * ixgb_exit_module - Driver Exit Cleanup Routine | |
171 | * | |
172 | * ixgb_exit_module is called just before the driver is removed | |
173 | * from memory. | |
174 | **/ | |
175 | ||
176 | static void __exit | |
177 | ixgb_exit_module(void) | |
178 | { | |
1da177e4 LT |
179 | pci_unregister_driver(&ixgb_driver); |
180 | } | |
181 | ||
182 | module_exit(ixgb_exit_module); | |
183 | ||
184 | /** | |
185 | * ixgb_irq_disable - Mask off interrupt generation on the NIC | |
186 | * @adapter: board private structure | |
187 | **/ | |
188 | ||
235949d1 | 189 | static void |
1da177e4 LT |
190 | ixgb_irq_disable(struct ixgb_adapter *adapter) |
191 | { | |
1da177e4 LT |
192 | IXGB_WRITE_REG(&adapter->hw, IMC, ~0); |
193 | IXGB_WRITE_FLUSH(&adapter->hw); | |
194 | synchronize_irq(adapter->pdev->irq); | |
195 | } | |
196 | ||
197 | /** | |
198 | * ixgb_irq_enable - Enable default interrupt generation settings | |
199 | * @adapter: board private structure | |
200 | **/ | |
201 | ||
235949d1 | 202 | static void |
1da177e4 LT |
203 | ixgb_irq_enable(struct ixgb_adapter *adapter) |
204 | { | |
9c61a9dc JB |
205 | u32 val = IXGB_INT_RXT0 | IXGB_INT_RXDMT0 | |
206 | IXGB_INT_TXDW | IXGB_INT_LSC; | |
207 | if (adapter->hw.subsystem_vendor_id == SUN_SUBVENDOR_ID) | |
208 | val |= IXGB_INT_GPI0; | |
209 | IXGB_WRITE_REG(&adapter->hw, IMS, val); | |
210 | IXGB_WRITE_FLUSH(&adapter->hw); | |
1da177e4 LT |
211 | } |
212 | ||
213 | int | |
214 | ixgb_up(struct ixgb_adapter *adapter) | |
215 | { | |
216 | struct net_device *netdev = adapter->netdev; | |
fb136c07 | 217 | int err, irq_flags = IRQF_SHARED; |
1da177e4 LT |
218 | int max_frame = netdev->mtu + ENET_HEADER_SIZE + ENET_FCS_LENGTH; |
219 | struct ixgb_hw *hw = &adapter->hw; | |
220 | ||
221 | /* hardware has been reset, we need to reload some things */ | |
222 | ||
8556f0d1 | 223 | ixgb_rar_set(hw, netdev->dev_addr, 0); |
1da177e4 LT |
224 | ixgb_set_multi(netdev); |
225 | ||
226 | ixgb_restore_vlan(adapter); | |
227 | ||
228 | ixgb_configure_tx(adapter); | |
229 | ixgb_setup_rctl(adapter); | |
230 | ixgb_configure_rx(adapter); | |
231 | ixgb_alloc_rx_buffers(adapter); | |
232 | ||
e59d1696 AK |
233 | /* disable interrupts and get the hardware into a known state */ |
234 | IXGB_WRITE_REG(&adapter->hw, IMC, 0xffffffff); | |
235 | ||
fb136c07 AK |
236 | /* only enable MSI if bus is in PCI-X mode */ |
237 | if (IXGB_READ_REG(&adapter->hw, STATUS) & IXGB_STATUS_PCIX_MODE) { | |
238 | err = pci_enable_msi(adapter->pdev); | |
239 | if (!err) { | |
240 | adapter->have_msi = 1; | |
241 | irq_flags = 0; | |
242 | } | |
1da177e4 LT |
243 | /* proceed to try to request regular interrupt */ |
244 | } | |
1da177e4 | 245 | |
fb136c07 AK |
246 | err = request_irq(adapter->pdev->irq, &ixgb_intr, irq_flags, |
247 | netdev->name, netdev); | |
248 | if (err) { | |
249 | if (adapter->have_msi) | |
250 | pci_disable_msi(adapter->pdev); | |
ec9c3f5d AK |
251 | DPRINTK(PROBE, ERR, |
252 | "Unable to allocate interrupt Error: %d\n", err); | |
1da177e4 | 253 | return err; |
ec9c3f5d | 254 | } |
1da177e4 | 255 | |
1da177e4 LT |
256 | if((hw->max_frame_size != max_frame) || |
257 | (hw->max_frame_size != | |
258 | (IXGB_READ_REG(hw, MFS) >> IXGB_MFS_SHIFT))) { | |
259 | ||
260 | hw->max_frame_size = max_frame; | |
261 | ||
262 | IXGB_WRITE_REG(hw, MFS, hw->max_frame_size << IXGB_MFS_SHIFT); | |
263 | ||
264 | if(hw->max_frame_size > | |
265 | IXGB_MAX_ENET_FRAME_SIZE_WITHOUT_FCS + ENET_FCS_LENGTH) { | |
222441a6 | 266 | u32 ctrl0 = IXGB_READ_REG(hw, CTRL0); |
1da177e4 LT |
267 | |
268 | if(!(ctrl0 & IXGB_CTRL0_JFE)) { | |
269 | ctrl0 |= IXGB_CTRL0_JFE; | |
270 | IXGB_WRITE_REG(hw, CTRL0, ctrl0); | |
271 | } | |
272 | } | |
273 | } | |
274 | ||
bab2bce7 | 275 | clear_bit(__IXGB_DOWN, &adapter->flags); |
1da177e4 LT |
276 | |
277 | #ifdef CONFIG_IXGB_NAPI | |
bea3348e | 278 | napi_enable(&adapter->napi); |
1da177e4 | 279 | #endif |
e59d1696 AK |
280 | ixgb_irq_enable(adapter); |
281 | ||
bab2bce7 JB |
282 | mod_timer(&adapter->watchdog_timer, jiffies); |
283 | ||
1da177e4 LT |
284 | return 0; |
285 | } | |
286 | ||
287 | void | |
446490ca | 288 | ixgb_down(struct ixgb_adapter *adapter, bool kill_watchdog) |
1da177e4 LT |
289 | { |
290 | struct net_device *netdev = adapter->netdev; | |
291 | ||
bab2bce7 JB |
292 | /* prevent the interrupt handler from restarting watchdog */ |
293 | set_bit(__IXGB_DOWN, &adapter->flags); | |
294 | ||
49d85c50 DM |
295 | #ifdef CONFIG_IXGB_NAPI |
296 | napi_disable(&adapter->napi); | |
49d85c50 | 297 | #endif |
bab2bce7 | 298 | /* waiting for NAPI to complete can re-enable interrupts */ |
1da177e4 LT |
299 | ixgb_irq_disable(adapter); |
300 | free_irq(adapter->pdev->irq, netdev); | |
fb136c07 AK |
301 | |
302 | if (adapter->have_msi) | |
1da177e4 LT |
303 | pci_disable_msi(adapter->pdev); |
304 | ||
1da177e4 LT |
305 | if(kill_watchdog) |
306 | del_timer_sync(&adapter->watchdog_timer); | |
49d85c50 | 307 | |
1da177e4 LT |
308 | adapter->link_speed = 0; |
309 | adapter->link_duplex = 0; | |
310 | netif_carrier_off(netdev); | |
311 | netif_stop_queue(netdev); | |
312 | ||
313 | ixgb_reset(adapter); | |
314 | ixgb_clean_tx_ring(adapter); | |
315 | ixgb_clean_rx_ring(adapter); | |
316 | } | |
317 | ||
318 | void | |
319 | ixgb_reset(struct ixgb_adapter *adapter) | |
320 | { | |
3fd7131f | 321 | struct ixgb_hw *hw = &adapter->hw; |
1da177e4 | 322 | |
3fd7131f MW |
323 | ixgb_adapter_stop(hw); |
324 | if (!ixgb_init_hw(hw)) | |
ec9c3f5d | 325 | DPRINTK(PROBE, ERR, "ixgb_init_hw failed.\n"); |
3fd7131f MW |
326 | |
327 | /* restore frame size information */ | |
328 | IXGB_WRITE_REG(hw, MFS, hw->max_frame_size << IXGB_MFS_SHIFT); | |
329 | if (hw->max_frame_size > | |
330 | IXGB_MAX_ENET_FRAME_SIZE_WITHOUT_FCS + ENET_FCS_LENGTH) { | |
331 | u32 ctrl0 = IXGB_READ_REG(hw, CTRL0); | |
332 | if (!(ctrl0 & IXGB_CTRL0_JFE)) { | |
333 | ctrl0 |= IXGB_CTRL0_JFE; | |
334 | IXGB_WRITE_REG(hw, CTRL0, ctrl0); | |
335 | } | |
336 | } | |
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; | |
1da177e4 LT |
358 | int pci_using_dac; |
359 | int i; | |
360 | int err; | |
361 | ||
362 | if((err = pci_enable_device(pdev))) | |
363 | return err; | |
364 | ||
c91e468a AS |
365 | if(!(err = pci_set_dma_mask(pdev, DMA_64BIT_MASK)) && |
366 | !(err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK))) { | |
1da177e4 LT |
367 | pci_using_dac = 1; |
368 | } else { | |
c91e468a AS |
369 | if((err = pci_set_dma_mask(pdev, DMA_32BIT_MASK)) || |
370 | (err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK))) { | |
ec9c3f5d AK |
371 | printk(KERN_ERR |
372 | "ixgb: No usable DMA configuration, aborting\n"); | |
c91e468a | 373 | goto err_dma_mask; |
1da177e4 LT |
374 | } |
375 | pci_using_dac = 0; | |
376 | } | |
377 | ||
378 | if((err = pci_request_regions(pdev, ixgb_driver_name))) | |
c91e468a | 379 | goto err_request_regions; |
1da177e4 LT |
380 | |
381 | pci_set_master(pdev); | |
382 | ||
383 | netdev = alloc_etherdev(sizeof(struct ixgb_adapter)); | |
384 | if(!netdev) { | |
385 | err = -ENOMEM; | |
386 | goto err_alloc_etherdev; | |
387 | } | |
388 | ||
1da177e4 LT |
389 | SET_NETDEV_DEV(netdev, &pdev->dev); |
390 | ||
391 | pci_set_drvdata(pdev, netdev); | |
8908c6cd | 392 | adapter = netdev_priv(netdev); |
1da177e4 LT |
393 | adapter->netdev = netdev; |
394 | adapter->pdev = pdev; | |
395 | adapter->hw.back = adapter; | |
ec9c3f5d | 396 | adapter->msg_enable = netif_msg_init(debug, DEFAULT_DEBUG_LEVEL_SHIFT); |
1da177e4 | 397 | |
e539e466 JB |
398 | adapter->hw.hw_addr = ioremap(pci_resource_start(pdev, BAR_0), |
399 | pci_resource_len(pdev, BAR_0)); | |
400 | if (!adapter->hw.hw_addr) { | |
1da177e4 LT |
401 | err = -EIO; |
402 | goto err_ioremap; | |
403 | } | |
404 | ||
405 | for(i = BAR_1; i <= BAR_5; i++) { | |
406 | if(pci_resource_len(pdev, i) == 0) | |
407 | continue; | |
408 | if(pci_resource_flags(pdev, i) & IORESOURCE_IO) { | |
409 | adapter->hw.io_base = pci_resource_start(pdev, i); | |
410 | break; | |
411 | } | |
412 | } | |
413 | ||
414 | netdev->open = &ixgb_open; | |
415 | netdev->stop = &ixgb_close; | |
416 | netdev->hard_start_xmit = &ixgb_xmit_frame; | |
417 | netdev->get_stats = &ixgb_get_stats; | |
418 | netdev->set_multicast_list = &ixgb_set_multi; | |
419 | netdev->set_mac_address = &ixgb_set_mac; | |
420 | netdev->change_mtu = &ixgb_change_mtu; | |
421 | ixgb_set_ethtool_ops(netdev); | |
422 | netdev->tx_timeout = &ixgb_tx_timeout; | |
9b8118df | 423 | netdev->watchdog_timeo = 5 * HZ; |
1da177e4 | 424 | #ifdef CONFIG_IXGB_NAPI |
bea3348e | 425 | netif_napi_add(netdev, &adapter->napi, ixgb_clean, 64); |
1da177e4 LT |
426 | #endif |
427 | netdev->vlan_rx_register = ixgb_vlan_rx_register; | |
428 | netdev->vlan_rx_add_vid = ixgb_vlan_rx_add_vid; | |
429 | netdev->vlan_rx_kill_vid = ixgb_vlan_rx_kill_vid; | |
430 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
431 | netdev->poll_controller = ixgb_netpoll; | |
432 | #endif | |
433 | ||
0eb5a34c | 434 | strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1); |
1da177e4 LT |
435 | |
436 | adapter->bd_number = cards_found; | |
437 | adapter->link_speed = 0; | |
438 | adapter->link_duplex = 0; | |
439 | ||
440 | /* setup the private structure */ | |
441 | ||
442 | if((err = ixgb_sw_init(adapter))) | |
443 | goto err_sw_init; | |
444 | ||
445 | netdev->features = NETIF_F_SG | | |
446 | NETIF_F_HW_CSUM | | |
447 | NETIF_F_HW_VLAN_TX | | |
448 | NETIF_F_HW_VLAN_RX | | |
449 | NETIF_F_HW_VLAN_FILTER; | |
1da177e4 | 450 | netdev->features |= NETIF_F_TSO; |
f017f14b AK |
451 | #ifdef NETIF_F_LLTX |
452 | netdev->features |= NETIF_F_LLTX; | |
453 | #endif | |
1da177e4 LT |
454 | |
455 | if(pci_using_dac) | |
456 | netdev->features |= NETIF_F_HIGHDMA; | |
457 | ||
458 | /* make sure the EEPROM is good */ | |
459 | ||
460 | if(!ixgb_validate_eeprom_checksum(&adapter->hw)) { | |
ec9c3f5d | 461 | DPRINTK(PROBE, ERR, "The EEPROM Checksum Is Not Valid\n"); |
1da177e4 LT |
462 | err = -EIO; |
463 | goto err_eeprom; | |
464 | } | |
465 | ||
466 | ixgb_get_ee_mac_addr(&adapter->hw, netdev->dev_addr); | |
df859c51 | 467 | memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len); |
1da177e4 | 468 | |
df859c51 | 469 | if(!is_valid_ether_addr(netdev->perm_addr)) { |
ec9c3f5d | 470 | DPRINTK(PROBE, ERR, "Invalid MAC Address\n"); |
1da177e4 LT |
471 | err = -EIO; |
472 | goto err_eeprom; | |
473 | } | |
474 | ||
475 | adapter->part_num = ixgb_get_ee_pba_number(&adapter->hw); | |
476 | ||
477 | init_timer(&adapter->watchdog_timer); | |
478 | adapter->watchdog_timer.function = &ixgb_watchdog; | |
479 | adapter->watchdog_timer.data = (unsigned long)adapter; | |
480 | ||
c4028958 | 481 | INIT_WORK(&adapter->tx_timeout_task, ixgb_tx_timeout_task); |
1da177e4 | 482 | |
ec9c3f5d | 483 | strcpy(netdev->name, "eth%d"); |
1da177e4 LT |
484 | if((err = register_netdev(netdev))) |
485 | goto err_register; | |
486 | ||
487 | /* we're going to reset, so assume we have no link for now */ | |
488 | ||
489 | netif_carrier_off(netdev); | |
490 | netif_stop_queue(netdev); | |
491 | ||
ec9c3f5d | 492 | DPRINTK(PROBE, INFO, "Intel(R) PRO/10GbE Network Connection\n"); |
1da177e4 LT |
493 | ixgb_check_options(adapter); |
494 | /* reset the hardware with the new settings */ | |
495 | ||
496 | ixgb_reset(adapter); | |
497 | ||
498 | cards_found++; | |
499 | return 0; | |
500 | ||
501 | err_register: | |
502 | err_sw_init: | |
503 | err_eeprom: | |
504 | iounmap(adapter->hw.hw_addr); | |
505 | err_ioremap: | |
506 | free_netdev(netdev); | |
507 | err_alloc_etherdev: | |
508 | pci_release_regions(pdev); | |
c91e468a AS |
509 | err_request_regions: |
510 | err_dma_mask: | |
511 | pci_disable_device(pdev); | |
1da177e4 LT |
512 | return err; |
513 | } | |
514 | ||
515 | /** | |
516 | * ixgb_remove - Device Removal Routine | |
517 | * @pdev: PCI device information struct | |
518 | * | |
519 | * ixgb_remove is called by the PCI subsystem to alert the driver | |
520 | * that it should release a PCI device. The could be caused by a | |
521 | * Hot-Plug event, or because the driver is going to be removed from | |
522 | * memory. | |
523 | **/ | |
524 | ||
525 | static void __devexit | |
526 | ixgb_remove(struct pci_dev *pdev) | |
527 | { | |
528 | struct net_device *netdev = pci_get_drvdata(pdev); | |
8908c6cd | 529 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
530 | |
531 | unregister_netdev(netdev); | |
532 | ||
533 | iounmap(adapter->hw.hw_addr); | |
534 | pci_release_regions(pdev); | |
535 | ||
536 | free_netdev(netdev); | |
537 | } | |
538 | ||
539 | /** | |
540 | * ixgb_sw_init - Initialize general software structures (struct ixgb_adapter) | |
541 | * @adapter: board private structure to initialize | |
542 | * | |
543 | * ixgb_sw_init initializes the Adapter private data structure. | |
544 | * Fields are initialized based on PCI device information and | |
545 | * OS network device settings (MTU size). | |
546 | **/ | |
547 | ||
548 | static int __devinit | |
549 | ixgb_sw_init(struct ixgb_adapter *adapter) | |
550 | { | |
551 | struct ixgb_hw *hw = &adapter->hw; | |
552 | struct net_device *netdev = adapter->netdev; | |
553 | struct pci_dev *pdev = adapter->pdev; | |
554 | ||
555 | /* PCI config space info */ | |
556 | ||
557 | hw->vendor_id = pdev->vendor; | |
558 | hw->device_id = pdev->device; | |
559 | hw->subsystem_vendor_id = pdev->subsystem_vendor; | |
560 | hw->subsystem_id = pdev->subsystem_device; | |
561 | ||
1da177e4 | 562 | hw->max_frame_size = netdev->mtu + ENET_HEADER_SIZE + ENET_FCS_LENGTH; |
a3dc3da0 | 563 | adapter->rx_buffer_len = hw->max_frame_size + 8; /* + 8 for errata */ |
1da177e4 LT |
564 | |
565 | if((hw->device_id == IXGB_DEVICE_ID_82597EX) | |
940829e2 AK |
566 | || (hw->device_id == IXGB_DEVICE_ID_82597EX_CX4) |
567 | || (hw->device_id == IXGB_DEVICE_ID_82597EX_LR) | |
568 | || (hw->device_id == IXGB_DEVICE_ID_82597EX_SR)) | |
1da177e4 LT |
569 | hw->mac_type = ixgb_82597; |
570 | else { | |
571 | /* should never have loaded on this device */ | |
ec9c3f5d | 572 | DPRINTK(PROBE, ERR, "unsupported device id\n"); |
1da177e4 LT |
573 | } |
574 | ||
575 | /* enable flow control to be programmed */ | |
576 | hw->fc.send_xon = 1; | |
577 | ||
1da177e4 LT |
578 | spin_lock_init(&adapter->tx_lock); |
579 | ||
bab2bce7 | 580 | set_bit(__IXGB_DOWN, &adapter->flags); |
1da177e4 LT |
581 | return 0; |
582 | } | |
583 | ||
584 | /** | |
585 | * ixgb_open - Called when a network interface is made active | |
586 | * @netdev: network interface device structure | |
587 | * | |
588 | * Returns 0 on success, negative value on failure | |
589 | * | |
590 | * The open entry point is called when a network interface is made | |
591 | * active by the system (IFF_UP). At this point all resources needed | |
592 | * for transmit and receive operations are allocated, the interrupt | |
593 | * handler is registered with the OS, the watchdog timer is started, | |
594 | * and the stack is notified that the interface is ready. | |
595 | **/ | |
596 | ||
597 | static int | |
598 | ixgb_open(struct net_device *netdev) | |
599 | { | |
8908c6cd | 600 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
601 | int err; |
602 | ||
603 | /* allocate transmit descriptors */ | |
604 | ||
605 | if((err = ixgb_setup_tx_resources(adapter))) | |
606 | goto err_setup_tx; | |
607 | ||
608 | /* allocate receive descriptors */ | |
609 | ||
610 | if((err = ixgb_setup_rx_resources(adapter))) | |
611 | goto err_setup_rx; | |
612 | ||
613 | if((err = ixgb_up(adapter))) | |
614 | goto err_up; | |
615 | ||
616 | return 0; | |
617 | ||
618 | err_up: | |
619 | ixgb_free_rx_resources(adapter); | |
620 | err_setup_rx: | |
621 | ixgb_free_tx_resources(adapter); | |
622 | err_setup_tx: | |
623 | ixgb_reset(adapter); | |
624 | ||
625 | return err; | |
626 | } | |
627 | ||
628 | /** | |
629 | * ixgb_close - Disables a network interface | |
630 | * @netdev: network interface device structure | |
631 | * | |
632 | * Returns 0, this is not allowed to fail | |
633 | * | |
634 | * The close entry point is called when an interface is de-activated | |
635 | * by the OS. The hardware is still under the drivers control, but | |
636 | * needs to be disabled. A global MAC reset is issued to stop the | |
637 | * hardware, and all transmit and receive resources are freed. | |
638 | **/ | |
639 | ||
640 | static int | |
641 | ixgb_close(struct net_device *netdev) | |
642 | { | |
8908c6cd | 643 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
1da177e4 | 644 | |
446490ca | 645 | ixgb_down(adapter, true); |
1da177e4 LT |
646 | |
647 | ixgb_free_tx_resources(adapter); | |
648 | ixgb_free_rx_resources(adapter); | |
649 | ||
650 | return 0; | |
651 | } | |
652 | ||
653 | /** | |
654 | * ixgb_setup_tx_resources - allocate Tx resources (Descriptors) | |
655 | * @adapter: board private structure | |
656 | * | |
657 | * Return 0 on success, negative on failure | |
658 | **/ | |
659 | ||
660 | int | |
661 | ixgb_setup_tx_resources(struct ixgb_adapter *adapter) | |
662 | { | |
663 | struct ixgb_desc_ring *txdr = &adapter->tx_ring; | |
664 | struct pci_dev *pdev = adapter->pdev; | |
665 | int size; | |
666 | ||
667 | size = sizeof(struct ixgb_buffer) * txdr->count; | |
668 | txdr->buffer_info = vmalloc(size); | |
669 | if(!txdr->buffer_info) { | |
ec9c3f5d AK |
670 | DPRINTK(PROBE, ERR, |
671 | "Unable to allocate transmit descriptor ring memory\n"); | |
1da177e4 LT |
672 | return -ENOMEM; |
673 | } | |
674 | memset(txdr->buffer_info, 0, size); | |
675 | ||
676 | /* round up to nearest 4K */ | |
677 | ||
678 | txdr->size = txdr->count * sizeof(struct ixgb_tx_desc); | |
55e924cf | 679 | txdr->size = ALIGN(txdr->size, 4096); |
1da177e4 LT |
680 | |
681 | txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma); | |
682 | if(!txdr->desc) { | |
683 | vfree(txdr->buffer_info); | |
ec9c3f5d AK |
684 | DPRINTK(PROBE, ERR, |
685 | "Unable to allocate transmit descriptor memory\n"); | |
1da177e4 LT |
686 | return -ENOMEM; |
687 | } | |
688 | memset(txdr->desc, 0, txdr->size); | |
689 | ||
690 | txdr->next_to_use = 0; | |
691 | txdr->next_to_clean = 0; | |
692 | ||
693 | return 0; | |
694 | } | |
695 | ||
696 | /** | |
697 | * ixgb_configure_tx - Configure 82597 Transmit Unit after Reset. | |
698 | * @adapter: board private structure | |
699 | * | |
700 | * Configure the Tx unit of the MAC after a reset. | |
701 | **/ | |
702 | ||
703 | static void | |
704 | ixgb_configure_tx(struct ixgb_adapter *adapter) | |
705 | { | |
222441a6 JP |
706 | u64 tdba = adapter->tx_ring.dma; |
707 | u32 tdlen = adapter->tx_ring.count * sizeof(struct ixgb_tx_desc); | |
708 | u32 tctl; | |
1da177e4 LT |
709 | struct ixgb_hw *hw = &adapter->hw; |
710 | ||
711 | /* Setup the Base and Length of the Tx Descriptor Ring | |
712 | * tx_ring.dma can be either a 32 or 64 bit value | |
713 | */ | |
714 | ||
715 | IXGB_WRITE_REG(hw, TDBAL, (tdba & 0x00000000ffffffffULL)); | |
716 | IXGB_WRITE_REG(hw, TDBAH, (tdba >> 32)); | |
717 | ||
718 | IXGB_WRITE_REG(hw, TDLEN, tdlen); | |
719 | ||
720 | /* Setup the HW Tx Head and Tail descriptor pointers */ | |
721 | ||
722 | IXGB_WRITE_REG(hw, TDH, 0); | |
723 | IXGB_WRITE_REG(hw, TDT, 0); | |
724 | ||
725 | /* don't set up txdctl, it induces performance problems if configured | |
726 | * incorrectly */ | |
727 | /* Set the Tx Interrupt Delay register */ | |
728 | ||
729 | IXGB_WRITE_REG(hw, TIDV, adapter->tx_int_delay); | |
730 | ||
731 | /* Program the Transmit Control Register */ | |
732 | ||
733 | tctl = IXGB_TCTL_TCE | IXGB_TCTL_TXEN | IXGB_TCTL_TPDE; | |
734 | IXGB_WRITE_REG(hw, TCTL, tctl); | |
735 | ||
736 | /* Setup Transmit Descriptor Settings for this adapter */ | |
737 | adapter->tx_cmd_type = | |
738 | IXGB_TX_DESC_TYPE | |
739 | | (adapter->tx_int_delay_enable ? IXGB_TX_DESC_CMD_IDE : 0); | |
740 | } | |
741 | ||
742 | /** | |
743 | * ixgb_setup_rx_resources - allocate Rx resources (Descriptors) | |
744 | * @adapter: board private structure | |
745 | * | |
746 | * Returns 0 on success, negative on failure | |
747 | **/ | |
748 | ||
749 | int | |
750 | ixgb_setup_rx_resources(struct ixgb_adapter *adapter) | |
751 | { | |
752 | struct ixgb_desc_ring *rxdr = &adapter->rx_ring; | |
753 | struct pci_dev *pdev = adapter->pdev; | |
754 | int size; | |
755 | ||
756 | size = sizeof(struct ixgb_buffer) * rxdr->count; | |
757 | rxdr->buffer_info = vmalloc(size); | |
758 | if(!rxdr->buffer_info) { | |
ec9c3f5d AK |
759 | DPRINTK(PROBE, ERR, |
760 | "Unable to allocate receive descriptor ring\n"); | |
1da177e4 LT |
761 | return -ENOMEM; |
762 | } | |
763 | memset(rxdr->buffer_info, 0, size); | |
764 | ||
765 | /* Round up to nearest 4K */ | |
766 | ||
767 | rxdr->size = rxdr->count * sizeof(struct ixgb_rx_desc); | |
55e924cf | 768 | rxdr->size = ALIGN(rxdr->size, 4096); |
1da177e4 LT |
769 | |
770 | rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma); | |
771 | ||
772 | if(!rxdr->desc) { | |
773 | vfree(rxdr->buffer_info); | |
ec9c3f5d AK |
774 | DPRINTK(PROBE, ERR, |
775 | "Unable to allocate receive descriptors\n"); | |
1da177e4 LT |
776 | return -ENOMEM; |
777 | } | |
778 | memset(rxdr->desc, 0, rxdr->size); | |
779 | ||
780 | rxdr->next_to_clean = 0; | |
781 | rxdr->next_to_use = 0; | |
782 | ||
783 | return 0; | |
784 | } | |
785 | ||
786 | /** | |
787 | * ixgb_setup_rctl - configure the receive control register | |
788 | * @adapter: Board private structure | |
789 | **/ | |
790 | ||
791 | static void | |
792 | ixgb_setup_rctl(struct ixgb_adapter *adapter) | |
793 | { | |
222441a6 | 794 | u32 rctl; |
1da177e4 LT |
795 | |
796 | rctl = IXGB_READ_REG(&adapter->hw, RCTL); | |
797 | ||
798 | rctl &= ~(3 << IXGB_RCTL_MO_SHIFT); | |
799 | ||
800 | rctl |= | |
801 | IXGB_RCTL_BAM | IXGB_RCTL_RDMTS_1_2 | | |
802 | IXGB_RCTL_RXEN | IXGB_RCTL_CFF | | |
803 | (adapter->hw.mc_filter_type << IXGB_RCTL_MO_SHIFT); | |
804 | ||
805 | rctl |= IXGB_RCTL_SECRC; | |
806 | ||
3f3dc0dd | 807 | if (adapter->rx_buffer_len <= IXGB_RXBUFFER_2048) |
1da177e4 | 808 | rctl |= IXGB_RCTL_BSIZE_2048; |
3f3dc0dd | 809 | else if (adapter->rx_buffer_len <= IXGB_RXBUFFER_4096) |
1da177e4 | 810 | rctl |= IXGB_RCTL_BSIZE_4096; |
3f3dc0dd | 811 | else if (adapter->rx_buffer_len <= IXGB_RXBUFFER_8192) |
1da177e4 | 812 | rctl |= IXGB_RCTL_BSIZE_8192; |
3f3dc0dd | 813 | else if (adapter->rx_buffer_len <= IXGB_RXBUFFER_16384) |
1da177e4 | 814 | rctl |= IXGB_RCTL_BSIZE_16384; |
1da177e4 LT |
815 | |
816 | IXGB_WRITE_REG(&adapter->hw, RCTL, rctl); | |
817 | } | |
818 | ||
819 | /** | |
820 | * ixgb_configure_rx - Configure 82597 Receive Unit after Reset. | |
821 | * @adapter: board private structure | |
822 | * | |
823 | * Configure the Rx unit of the MAC after a reset. | |
824 | **/ | |
825 | ||
826 | static void | |
827 | ixgb_configure_rx(struct ixgb_adapter *adapter) | |
828 | { | |
222441a6 JP |
829 | u64 rdba = adapter->rx_ring.dma; |
830 | u32 rdlen = adapter->rx_ring.count * sizeof(struct ixgb_rx_desc); | |
1da177e4 | 831 | struct ixgb_hw *hw = &adapter->hw; |
222441a6 JP |
832 | u32 rctl; |
833 | u32 rxcsum; | |
1da177e4 LT |
834 | |
835 | /* make sure receives are disabled while setting up the descriptors */ | |
836 | ||
837 | rctl = IXGB_READ_REG(hw, RCTL); | |
838 | IXGB_WRITE_REG(hw, RCTL, rctl & ~IXGB_RCTL_RXEN); | |
839 | ||
840 | /* set the Receive Delay Timer Register */ | |
841 | ||
842 | IXGB_WRITE_REG(hw, RDTR, adapter->rx_int_delay); | |
843 | ||
844 | /* Setup the Base and Length of the Rx Descriptor Ring */ | |
845 | ||
846 | IXGB_WRITE_REG(hw, RDBAL, (rdba & 0x00000000ffffffffULL)); | |
847 | IXGB_WRITE_REG(hw, RDBAH, (rdba >> 32)); | |
848 | ||
849 | IXGB_WRITE_REG(hw, RDLEN, rdlen); | |
850 | ||
851 | /* Setup the HW Rx Head and Tail Descriptor Pointers */ | |
852 | IXGB_WRITE_REG(hw, RDH, 0); | |
853 | IXGB_WRITE_REG(hw, RDT, 0); | |
854 | ||
4360386f JB |
855 | /* due to the hardware errata with RXDCTL, we are unable to use any of |
856 | * the performance enhancing features of it without causing other | |
857 | * subtle bugs, some of the bugs could include receive length | |
858 | * corruption at high data rates (WTHRESH > 0) and/or receive | |
859 | * descriptor ring irregularites (particularly in hardware cache) */ | |
860 | IXGB_WRITE_REG(hw, RXDCTL, 0); | |
1da177e4 LT |
861 | |
862 | /* Enable Receive Checksum Offload for TCP and UDP */ | |
446490ca | 863 | if (adapter->rx_csum) { |
1da177e4 LT |
864 | rxcsum = IXGB_READ_REG(hw, RXCSUM); |
865 | rxcsum |= IXGB_RXCSUM_TUOFL; | |
866 | IXGB_WRITE_REG(hw, RXCSUM, rxcsum); | |
867 | } | |
868 | ||
869 | /* Enable Receives */ | |
870 | ||
871 | IXGB_WRITE_REG(hw, RCTL, rctl); | |
872 | } | |
873 | ||
874 | /** | |
875 | * ixgb_free_tx_resources - Free Tx Resources | |
876 | * @adapter: board private structure | |
877 | * | |
878 | * Free all transmit software resources | |
879 | **/ | |
880 | ||
881 | void | |
882 | ixgb_free_tx_resources(struct ixgb_adapter *adapter) | |
883 | { | |
884 | struct pci_dev *pdev = adapter->pdev; | |
885 | ||
886 | ixgb_clean_tx_ring(adapter); | |
887 | ||
888 | vfree(adapter->tx_ring.buffer_info); | |
889 | adapter->tx_ring.buffer_info = NULL; | |
890 | ||
891 | pci_free_consistent(pdev, adapter->tx_ring.size, | |
892 | adapter->tx_ring.desc, adapter->tx_ring.dma); | |
893 | ||
894 | adapter->tx_ring.desc = NULL; | |
895 | } | |
896 | ||
235949d1 | 897 | static void |
1da177e4 LT |
898 | ixgb_unmap_and_free_tx_resource(struct ixgb_adapter *adapter, |
899 | struct ixgb_buffer *buffer_info) | |
900 | { | |
901 | struct pci_dev *pdev = adapter->pdev; | |
1dfdd7df AK |
902 | |
903 | if (buffer_info->dma) | |
904 | pci_unmap_page(pdev, buffer_info->dma, buffer_info->length, | |
905 | PCI_DMA_TODEVICE); | |
906 | ||
907 | if (buffer_info->skb) | |
1da177e4 | 908 | dev_kfree_skb_any(buffer_info->skb); |
1dfdd7df AK |
909 | |
910 | buffer_info->skb = NULL; | |
911 | buffer_info->dma = 0; | |
912 | buffer_info->time_stamp = 0; | |
913 | /* these fields must always be initialized in tx | |
914 | * buffer_info->length = 0; | |
915 | * buffer_info->next_to_watch = 0; */ | |
1da177e4 LT |
916 | } |
917 | ||
918 | /** | |
919 | * ixgb_clean_tx_ring - Free Tx Buffers | |
920 | * @adapter: board private structure | |
921 | **/ | |
922 | ||
923 | static void | |
924 | ixgb_clean_tx_ring(struct ixgb_adapter *adapter) | |
925 | { | |
926 | struct ixgb_desc_ring *tx_ring = &adapter->tx_ring; | |
927 | struct ixgb_buffer *buffer_info; | |
928 | unsigned long size; | |
929 | unsigned int i; | |
930 | ||
931 | /* Free all the Tx ring sk_buffs */ | |
932 | ||
933 | for(i = 0; i < tx_ring->count; i++) { | |
934 | buffer_info = &tx_ring->buffer_info[i]; | |
935 | ixgb_unmap_and_free_tx_resource(adapter, buffer_info); | |
936 | } | |
937 | ||
938 | size = sizeof(struct ixgb_buffer) * tx_ring->count; | |
939 | memset(tx_ring->buffer_info, 0, size); | |
940 | ||
941 | /* Zero out the descriptor ring */ | |
942 | ||
943 | memset(tx_ring->desc, 0, tx_ring->size); | |
944 | ||
945 | tx_ring->next_to_use = 0; | |
946 | tx_ring->next_to_clean = 0; | |
947 | ||
948 | IXGB_WRITE_REG(&adapter->hw, TDH, 0); | |
949 | IXGB_WRITE_REG(&adapter->hw, TDT, 0); | |
950 | } | |
951 | ||
952 | /** | |
953 | * ixgb_free_rx_resources - Free Rx Resources | |
954 | * @adapter: board private structure | |
955 | * | |
956 | * Free all receive software resources | |
957 | **/ | |
958 | ||
959 | void | |
960 | ixgb_free_rx_resources(struct ixgb_adapter *adapter) | |
961 | { | |
962 | struct ixgb_desc_ring *rx_ring = &adapter->rx_ring; | |
963 | struct pci_dev *pdev = adapter->pdev; | |
964 | ||
965 | ixgb_clean_rx_ring(adapter); | |
966 | ||
967 | vfree(rx_ring->buffer_info); | |
968 | rx_ring->buffer_info = NULL; | |
969 | ||
970 | pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma); | |
971 | ||
972 | rx_ring->desc = NULL; | |
973 | } | |
974 | ||
975 | /** | |
976 | * ixgb_clean_rx_ring - Free Rx Buffers | |
977 | * @adapter: board private structure | |
978 | **/ | |
979 | ||
980 | static void | |
981 | ixgb_clean_rx_ring(struct ixgb_adapter *adapter) | |
982 | { | |
983 | struct ixgb_desc_ring *rx_ring = &adapter->rx_ring; | |
984 | struct ixgb_buffer *buffer_info; | |
985 | struct pci_dev *pdev = adapter->pdev; | |
986 | unsigned long size; | |
987 | unsigned int i; | |
988 | ||
989 | /* Free all the Rx ring sk_buffs */ | |
990 | ||
991 | for(i = 0; i < rx_ring->count; i++) { | |
992 | buffer_info = &rx_ring->buffer_info[i]; | |
993 | if(buffer_info->skb) { | |
994 | ||
995 | pci_unmap_single(pdev, | |
996 | buffer_info->dma, | |
997 | buffer_info->length, | |
998 | PCI_DMA_FROMDEVICE); | |
999 | ||
1000 | dev_kfree_skb(buffer_info->skb); | |
1001 | ||
1002 | buffer_info->skb = NULL; | |
1003 | } | |
1004 | } | |
1005 | ||
1006 | size = sizeof(struct ixgb_buffer) * rx_ring->count; | |
1007 | memset(rx_ring->buffer_info, 0, size); | |
1008 | ||
1009 | /* Zero out the descriptor ring */ | |
1010 | ||
1011 | memset(rx_ring->desc, 0, rx_ring->size); | |
1012 | ||
1013 | rx_ring->next_to_clean = 0; | |
1014 | rx_ring->next_to_use = 0; | |
1015 | ||
1016 | IXGB_WRITE_REG(&adapter->hw, RDH, 0); | |
1017 | IXGB_WRITE_REG(&adapter->hw, RDT, 0); | |
1018 | } | |
1019 | ||
1020 | /** | |
1021 | * ixgb_set_mac - Change the Ethernet Address of the NIC | |
1022 | * @netdev: network interface device structure | |
1023 | * @p: pointer to an address structure | |
1024 | * | |
1025 | * Returns 0 on success, negative on failure | |
1026 | **/ | |
1027 | ||
1028 | static int | |
1029 | ixgb_set_mac(struct net_device *netdev, void *p) | |
1030 | { | |
8908c6cd | 1031 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
1032 | struct sockaddr *addr = p; |
1033 | ||
1034 | if(!is_valid_ether_addr(addr->sa_data)) | |
1035 | return -EADDRNOTAVAIL; | |
1036 | ||
1037 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
1038 | ||
1039 | ixgb_rar_set(&adapter->hw, addr->sa_data, 0); | |
1040 | ||
1041 | return 0; | |
1042 | } | |
1043 | ||
1044 | /** | |
1045 | * ixgb_set_multi - Multicast and Promiscuous mode set | |
1046 | * @netdev: network interface device structure | |
1047 | * | |
1048 | * The set_multi entry point is called whenever the multicast address | |
1049 | * list or the network interface flags are updated. This routine is | |
1050 | * responsible for configuring the hardware for proper multicast, | |
1051 | * promiscuous mode, and all-multi behavior. | |
1052 | **/ | |
1053 | ||
1054 | static void | |
1055 | ixgb_set_multi(struct net_device *netdev) | |
1056 | { | |
8908c6cd | 1057 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
1058 | struct ixgb_hw *hw = &adapter->hw; |
1059 | struct dev_mc_list *mc_ptr; | |
222441a6 | 1060 | u32 rctl; |
1da177e4 LT |
1061 | int i; |
1062 | ||
1063 | /* Check for Promiscuous and All Multicast modes */ | |
1064 | ||
1065 | rctl = IXGB_READ_REG(hw, RCTL); | |
1066 | ||
1067 | if(netdev->flags & IFF_PROMISC) { | |
1068 | rctl |= (IXGB_RCTL_UPE | IXGB_RCTL_MPE); | |
1069 | } else if(netdev->flags & IFF_ALLMULTI) { | |
1070 | rctl |= IXGB_RCTL_MPE; | |
1071 | rctl &= ~IXGB_RCTL_UPE; | |
1072 | } else { | |
1073 | rctl &= ~(IXGB_RCTL_UPE | IXGB_RCTL_MPE); | |
1074 | } | |
1075 | ||
1076 | if(netdev->mc_count > IXGB_MAX_NUM_MULTICAST_ADDRESSES) { | |
1077 | rctl |= IXGB_RCTL_MPE; | |
1078 | IXGB_WRITE_REG(hw, RCTL, rctl); | |
1079 | } else { | |
222441a6 | 1080 | u8 mta[IXGB_MAX_NUM_MULTICAST_ADDRESSES * |
273dc74e | 1081 | IXGB_ETH_LENGTH_OF_ADDRESS]; |
1da177e4 LT |
1082 | |
1083 | IXGB_WRITE_REG(hw, RCTL, rctl); | |
1084 | ||
1085 | for(i = 0, mc_ptr = netdev->mc_list; mc_ptr; | |
1086 | i++, mc_ptr = mc_ptr->next) | |
1087 | memcpy(&mta[i * IXGB_ETH_LENGTH_OF_ADDRESS], | |
1088 | mc_ptr->dmi_addr, IXGB_ETH_LENGTH_OF_ADDRESS); | |
1089 | ||
1090 | ixgb_mc_addr_list_update(hw, mta, netdev->mc_count, 0); | |
1091 | } | |
1092 | } | |
1093 | ||
1094 | /** | |
1095 | * ixgb_watchdog - Timer Call-back | |
1096 | * @data: pointer to netdev cast into an unsigned long | |
1097 | **/ | |
1098 | ||
1099 | static void | |
1100 | ixgb_watchdog(unsigned long data) | |
1101 | { | |
1102 | struct ixgb_adapter *adapter = (struct ixgb_adapter *)data; | |
1103 | struct net_device *netdev = adapter->netdev; | |
1104 | struct ixgb_desc_ring *txdr = &adapter->tx_ring; | |
1105 | ||
1106 | ixgb_check_for_link(&adapter->hw); | |
1107 | ||
1108 | if (ixgb_check_for_bad_link(&adapter->hw)) { | |
1109 | /* force the reset path */ | |
1110 | netif_stop_queue(netdev); | |
1111 | } | |
1112 | ||
1113 | if(adapter->hw.link_up) { | |
1114 | if(!netif_carrier_ok(netdev)) { | |
ec9c3f5d AK |
1115 | DPRINTK(LINK, INFO, |
1116 | "NIC Link is Up 10000 Mbps Full Duplex\n"); | |
1da177e4 LT |
1117 | adapter->link_speed = 10000; |
1118 | adapter->link_duplex = FULL_DUPLEX; | |
1119 | netif_carrier_on(netdev); | |
1120 | netif_wake_queue(netdev); | |
1121 | } | |
1122 | } else { | |
1123 | if(netif_carrier_ok(netdev)) { | |
1124 | adapter->link_speed = 0; | |
1125 | adapter->link_duplex = 0; | |
ec9c3f5d | 1126 | DPRINTK(LINK, INFO, "NIC Link is Down\n"); |
1da177e4 LT |
1127 | netif_carrier_off(netdev); |
1128 | netif_stop_queue(netdev); | |
1129 | ||
1130 | } | |
1131 | } | |
1132 | ||
1133 | ixgb_update_stats(adapter); | |
1134 | ||
1135 | if(!netif_carrier_ok(netdev)) { | |
1136 | if(IXGB_DESC_UNUSED(txdr) + 1 < txdr->count) { | |
1137 | /* We've lost link, so the controller stops DMA, | |
1138 | * but we've got queued Tx work that's never going | |
1139 | * to get done, so reset controller to flush Tx. | |
1140 | * (Do the reset outside of interrupt context). */ | |
1141 | schedule_work(&adapter->tx_timeout_task); | |
1142 | } | |
1143 | } | |
1144 | ||
1145 | /* Force detection of hung controller every watchdog period */ | |
446490ca | 1146 | adapter->detect_tx_hung = true; |
1da177e4 LT |
1147 | |
1148 | /* generate an interrupt to force clean up of any stragglers */ | |
1149 | IXGB_WRITE_REG(&adapter->hw, ICS, IXGB_INT_TXDW); | |
1150 | ||
1151 | /* Reset the timer */ | |
1152 | mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ); | |
1153 | } | |
1154 | ||
1155 | #define IXGB_TX_FLAGS_CSUM 0x00000001 | |
1156 | #define IXGB_TX_FLAGS_VLAN 0x00000002 | |
1157 | #define IXGB_TX_FLAGS_TSO 0x00000004 | |
1158 | ||
235949d1 | 1159 | static int |
1da177e4 LT |
1160 | ixgb_tso(struct ixgb_adapter *adapter, struct sk_buff *skb) |
1161 | { | |
1da177e4 LT |
1162 | struct ixgb_context_desc *context_desc; |
1163 | unsigned int i; | |
222441a6 JP |
1164 | u8 ipcss, ipcso, tucss, tucso, hdr_len; |
1165 | u16 ipcse, tucse, mss; | |
1da177e4 LT |
1166 | int err; |
1167 | ||
89114afd | 1168 | if (likely(skb_is_gso(skb))) { |
adc54139 | 1169 | struct ixgb_buffer *buffer_info; |
eddc9ec5 ACM |
1170 | struct iphdr *iph; |
1171 | ||
1da177e4 LT |
1172 | if (skb_header_cloned(skb)) { |
1173 | err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); | |
1174 | if (err) | |
1175 | return err; | |
1176 | } | |
1177 | ||
ab6a5bb6 | 1178 | hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
7967168c | 1179 | mss = skb_shinfo(skb)->gso_size; |
eddc9ec5 ACM |
1180 | iph = ip_hdr(skb); |
1181 | iph->tot_len = 0; | |
1182 | iph->check = 0; | |
aa8223c7 ACM |
1183 | tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, |
1184 | iph->daddr, 0, | |
1185 | IPPROTO_TCP, 0); | |
bbe735e4 | 1186 | ipcss = skb_network_offset(skb); |
eddc9ec5 | 1187 | ipcso = (void *)&(iph->check) - (void *)skb->data; |
ea2ae17d ACM |
1188 | ipcse = skb_transport_offset(skb) - 1; |
1189 | tucss = skb_transport_offset(skb); | |
aa8223c7 | 1190 | tucso = (void *)&(tcp_hdr(skb)->check) - (void *)skb->data; |
1da177e4 LT |
1191 | tucse = 0; |
1192 | ||
1193 | i = adapter->tx_ring.next_to_use; | |
1194 | context_desc = IXGB_CONTEXT_DESC(adapter->tx_ring, i); | |
adc54139 JB |
1195 | buffer_info = &adapter->tx_ring.buffer_info[i]; |
1196 | WARN_ON(buffer_info->dma != 0); | |
1da177e4 LT |
1197 | |
1198 | context_desc->ipcss = ipcss; | |
1199 | context_desc->ipcso = ipcso; | |
1200 | context_desc->ipcse = cpu_to_le16(ipcse); | |
1201 | context_desc->tucss = tucss; | |
1202 | context_desc->tucso = tucso; | |
1203 | context_desc->tucse = cpu_to_le16(tucse); | |
1204 | context_desc->mss = cpu_to_le16(mss); | |
1205 | context_desc->hdr_len = hdr_len; | |
1206 | context_desc->status = 0; | |
1207 | context_desc->cmd_type_len = cpu_to_le32( | |
1208 | IXGB_CONTEXT_DESC_TYPE | |
1209 | | IXGB_CONTEXT_DESC_CMD_TSE | |
1210 | | IXGB_CONTEXT_DESC_CMD_IP | |
1211 | | IXGB_CONTEXT_DESC_CMD_TCP | |
1da177e4 LT |
1212 | | IXGB_CONTEXT_DESC_CMD_IDE |
1213 | | (skb->len - (hdr_len))); | |
1214 | ||
06c2f9ec | 1215 | |
1da177e4 LT |
1216 | if(++i == adapter->tx_ring.count) i = 0; |
1217 | adapter->tx_ring.next_to_use = i; | |
1218 | ||
1219 | return 1; | |
1220 | } | |
1da177e4 LT |
1221 | |
1222 | return 0; | |
1223 | } | |
1224 | ||
446490ca | 1225 | static bool |
1da177e4 LT |
1226 | ixgb_tx_csum(struct ixgb_adapter *adapter, struct sk_buff *skb) |
1227 | { | |
1228 | struct ixgb_context_desc *context_desc; | |
1229 | unsigned int i; | |
222441a6 | 1230 | u8 css, cso; |
1da177e4 | 1231 | |
84fa7933 | 1232 | if(likely(skb->ip_summed == CHECKSUM_PARTIAL)) { |
adc54139 | 1233 | struct ixgb_buffer *buffer_info; |
ea2ae17d | 1234 | css = skb_transport_offset(skb); |
ff1dcadb | 1235 | cso = css + skb->csum_offset; |
1da177e4 LT |
1236 | |
1237 | i = adapter->tx_ring.next_to_use; | |
1238 | context_desc = IXGB_CONTEXT_DESC(adapter->tx_ring, i); | |
adc54139 JB |
1239 | buffer_info = &adapter->tx_ring.buffer_info[i]; |
1240 | WARN_ON(buffer_info->dma != 0); | |
1da177e4 LT |
1241 | |
1242 | context_desc->tucss = css; | |
1243 | context_desc->tucso = cso; | |
1244 | context_desc->tucse = 0; | |
1245 | /* zero out any previously existing data in one instruction */ | |
222441a6 | 1246 | *(u32 *)&(context_desc->ipcss) = 0; |
1da177e4 LT |
1247 | context_desc->status = 0; |
1248 | context_desc->hdr_len = 0; | |
1249 | context_desc->mss = 0; | |
1250 | context_desc->cmd_type_len = | |
1251 | cpu_to_le32(IXGB_CONTEXT_DESC_TYPE | |
06c2f9ec | 1252 | | IXGB_TX_DESC_CMD_IDE); |
1da177e4 LT |
1253 | |
1254 | if(++i == adapter->tx_ring.count) i = 0; | |
1255 | adapter->tx_ring.next_to_use = i; | |
1256 | ||
446490ca | 1257 | return true; |
1da177e4 LT |
1258 | } |
1259 | ||
446490ca | 1260 | return false; |
1da177e4 LT |
1261 | } |
1262 | ||
1263 | #define IXGB_MAX_TXD_PWR 14 | |
1264 | #define IXGB_MAX_DATA_PER_TXD (1<<IXGB_MAX_TXD_PWR) | |
1265 | ||
235949d1 | 1266 | static int |
1da177e4 LT |
1267 | ixgb_tx_map(struct ixgb_adapter *adapter, struct sk_buff *skb, |
1268 | unsigned int first) | |
1269 | { | |
1270 | struct ixgb_desc_ring *tx_ring = &adapter->tx_ring; | |
1271 | struct ixgb_buffer *buffer_info; | |
1272 | int len = skb->len; | |
1273 | unsigned int offset = 0, size, count = 0, i; | |
5d927853 | 1274 | unsigned int mss = skb_shinfo(skb)->gso_size; |
1da177e4 LT |
1275 | |
1276 | unsigned int nr_frags = skb_shinfo(skb)->nr_frags; | |
1277 | unsigned int f; | |
ac79c82e | 1278 | |
1da177e4 LT |
1279 | len -= skb->data_len; |
1280 | ||
1281 | i = tx_ring->next_to_use; | |
1282 | ||
1283 | while(len) { | |
1284 | buffer_info = &tx_ring->buffer_info[i]; | |
709cf018 | 1285 | size = min(len, IXGB_MAX_DATA_PER_TXD); |
5d927853 JB |
1286 | /* Workaround for premature desc write-backs |
1287 | * in TSO mode. Append 4-byte sentinel desc */ | |
1288 | if (unlikely(mss && !nr_frags && size == len && size > 8)) | |
1289 | size -= 4; | |
1290 | ||
1da177e4 | 1291 | buffer_info->length = size; |
adc54139 | 1292 | WARN_ON(buffer_info->dma != 0); |
1da177e4 LT |
1293 | buffer_info->dma = |
1294 | pci_map_single(adapter->pdev, | |
1295 | skb->data + offset, | |
1296 | size, | |
1297 | PCI_DMA_TODEVICE); | |
1298 | buffer_info->time_stamp = jiffies; | |
1dfdd7df | 1299 | buffer_info->next_to_watch = 0; |
1da177e4 LT |
1300 | |
1301 | len -= size; | |
1302 | offset += size; | |
1303 | count++; | |
1304 | if(++i == tx_ring->count) i = 0; | |
1305 | } | |
1306 | ||
1307 | for(f = 0; f < nr_frags; f++) { | |
1308 | struct skb_frag_struct *frag; | |
1309 | ||
1310 | frag = &skb_shinfo(skb)->frags[f]; | |
1311 | len = frag->size; | |
1312 | offset = 0; | |
1313 | ||
1314 | while(len) { | |
1315 | buffer_info = &tx_ring->buffer_info[i]; | |
709cf018 | 1316 | size = min(len, IXGB_MAX_DATA_PER_TXD); |
5d927853 JB |
1317 | |
1318 | /* Workaround for premature desc write-backs | |
1319 | * in TSO mode. Append 4-byte sentinel desc */ | |
19abe86d AK |
1320 | if (unlikely(mss && (f == (nr_frags - 1)) |
1321 | && size == len && size > 8)) | |
5d927853 JB |
1322 | size -= 4; |
1323 | ||
1da177e4 LT |
1324 | buffer_info->length = size; |
1325 | buffer_info->dma = | |
1326 | pci_map_page(adapter->pdev, | |
1327 | frag->page, | |
1328 | frag->page_offset + offset, | |
1329 | size, | |
1330 | PCI_DMA_TODEVICE); | |
1331 | buffer_info->time_stamp = jiffies; | |
1dfdd7df | 1332 | buffer_info->next_to_watch = 0; |
1da177e4 LT |
1333 | |
1334 | len -= size; | |
1335 | offset += size; | |
1336 | count++; | |
1337 | if(++i == tx_ring->count) i = 0; | |
1338 | } | |
1339 | } | |
1340 | i = (i == 0) ? tx_ring->count - 1 : i - 1; | |
1341 | tx_ring->buffer_info[i].skb = skb; | |
1342 | tx_ring->buffer_info[first].next_to_watch = i; | |
1343 | ||
1344 | return count; | |
1345 | } | |
1346 | ||
235949d1 | 1347 | static void |
1da177e4 LT |
1348 | ixgb_tx_queue(struct ixgb_adapter *adapter, int count, int vlan_id,int tx_flags) |
1349 | { | |
1350 | struct ixgb_desc_ring *tx_ring = &adapter->tx_ring; | |
1351 | struct ixgb_tx_desc *tx_desc = NULL; | |
1352 | struct ixgb_buffer *buffer_info; | |
222441a6 JP |
1353 | u32 cmd_type_len = adapter->tx_cmd_type; |
1354 | u8 status = 0; | |
1355 | u8 popts = 0; | |
1da177e4 LT |
1356 | unsigned int i; |
1357 | ||
1358 | if(tx_flags & IXGB_TX_FLAGS_TSO) { | |
1359 | cmd_type_len |= IXGB_TX_DESC_CMD_TSE; | |
1360 | popts |= (IXGB_TX_DESC_POPTS_IXSM | IXGB_TX_DESC_POPTS_TXSM); | |
1361 | } | |
1362 | ||
1363 | if(tx_flags & IXGB_TX_FLAGS_CSUM) | |
1364 | popts |= IXGB_TX_DESC_POPTS_TXSM; | |
1365 | ||
1366 | if(tx_flags & IXGB_TX_FLAGS_VLAN) { | |
1367 | cmd_type_len |= IXGB_TX_DESC_CMD_VLE; | |
1368 | } | |
1369 | ||
1370 | i = tx_ring->next_to_use; | |
1371 | ||
1372 | while(count--) { | |
1373 | buffer_info = &tx_ring->buffer_info[i]; | |
1374 | tx_desc = IXGB_TX_DESC(*tx_ring, i); | |
1375 | tx_desc->buff_addr = cpu_to_le64(buffer_info->dma); | |
1376 | tx_desc->cmd_type_len = | |
1377 | cpu_to_le32(cmd_type_len | buffer_info->length); | |
1378 | tx_desc->status = status; | |
1379 | tx_desc->popts = popts; | |
1380 | tx_desc->vlan = cpu_to_le16(vlan_id); | |
1381 | ||
1382 | if(++i == tx_ring->count) i = 0; | |
1383 | } | |
1384 | ||
1385 | tx_desc->cmd_type_len |= cpu_to_le32(IXGB_TX_DESC_CMD_EOP | |
1386 | | IXGB_TX_DESC_CMD_RS ); | |
1387 | ||
1388 | /* Force memory writes to complete before letting h/w | |
1389 | * know there are new descriptors to fetch. (Only | |
1390 | * applicable for weak-ordered memory model archs, | |
1391 | * such as IA-64). */ | |
1392 | wmb(); | |
1393 | ||
1394 | tx_ring->next_to_use = i; | |
1395 | IXGB_WRITE_REG(&adapter->hw, TDT, i); | |
1396 | } | |
1397 | ||
dfd341e4 JB |
1398 | static int __ixgb_maybe_stop_tx(struct net_device *netdev, int size) |
1399 | { | |
1400 | struct ixgb_adapter *adapter = netdev_priv(netdev); | |
1401 | struct ixgb_desc_ring *tx_ring = &adapter->tx_ring; | |
1402 | ||
1403 | netif_stop_queue(netdev); | |
1404 | /* Herbert's original patch had: | |
1405 | * smp_mb__after_netif_stop_queue(); | |
1406 | * but since that doesn't exist yet, just open code it. */ | |
1407 | smp_mb(); | |
1408 | ||
1409 | /* We need to check again in a case another CPU has just | |
1410 | * made room available. */ | |
1411 | if (likely(IXGB_DESC_UNUSED(tx_ring) < size)) | |
1412 | return -EBUSY; | |
1413 | ||
1414 | /* A reprieve! */ | |
1415 | netif_start_queue(netdev); | |
1416 | ++adapter->restart_queue; | |
1417 | return 0; | |
1418 | } | |
1419 | ||
1420 | static int ixgb_maybe_stop_tx(struct net_device *netdev, | |
1421 | struct ixgb_desc_ring *tx_ring, int size) | |
1422 | { | |
1423 | if (likely(IXGB_DESC_UNUSED(tx_ring) >= size)) | |
1424 | return 0; | |
1425 | return __ixgb_maybe_stop_tx(netdev, size); | |
1426 | } | |
1427 | ||
1428 | ||
1da177e4 LT |
1429 | /* Tx Descriptors needed, worst case */ |
1430 | #define TXD_USE_COUNT(S) (((S) >> IXGB_MAX_TXD_PWR) + \ | |
1431 | (((S) & (IXGB_MAX_DATA_PER_TXD - 1)) ? 1 : 0)) | |
5d927853 JB |
1432 | #define DESC_NEEDED TXD_USE_COUNT(IXGB_MAX_DATA_PER_TXD) /* skb->date */ + \ |
1433 | MAX_SKB_FRAGS * TXD_USE_COUNT(PAGE_SIZE) + 1 /* for context */ \ | |
1434 | + 1 /* one more needed for sentinel TSO workaround */ | |
1da177e4 LT |
1435 | |
1436 | static int | |
1437 | ixgb_xmit_frame(struct sk_buff *skb, struct net_device *netdev) | |
1438 | { | |
8908c6cd | 1439 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
1440 | unsigned int first; |
1441 | unsigned int tx_flags = 0; | |
1442 | unsigned long flags; | |
1443 | int vlan_id = 0; | |
1444 | int tso; | |
1445 | ||
bab2bce7 JB |
1446 | if (test_bit(__IXGB_DOWN, &adapter->flags)) { |
1447 | dev_kfree_skb(skb); | |
1448 | return NETDEV_TX_OK; | |
1449 | } | |
1450 | ||
1da177e4 LT |
1451 | if(skb->len <= 0) { |
1452 | dev_kfree_skb_any(skb); | |
1453 | return 0; | |
1454 | } | |
1455 | ||
f017f14b | 1456 | #ifdef NETIF_F_LLTX |
bab2bce7 | 1457 | if (!spin_trylock_irqsave(&adapter->tx_lock, flags)) { |
f017f14b AK |
1458 | /* Collision - tell upper layer to requeue */ |
1459 | local_irq_restore(flags); | |
1460 | return NETDEV_TX_LOCKED; | |
1461 | } | |
1462 | #else | |
1da177e4 | 1463 | spin_lock_irqsave(&adapter->tx_lock, flags); |
f017f14b AK |
1464 | #endif |
1465 | ||
dfd341e4 JB |
1466 | if (unlikely(ixgb_maybe_stop_tx(netdev, &adapter->tx_ring, |
1467 | DESC_NEEDED))) { | |
1da177e4 LT |
1468 | netif_stop_queue(netdev); |
1469 | spin_unlock_irqrestore(&adapter->tx_lock, flags); | |
f017f14b | 1470 | return NETDEV_TX_BUSY; |
1da177e4 | 1471 | } |
f017f14b AK |
1472 | |
1473 | #ifndef NETIF_F_LLTX | |
1da177e4 | 1474 | spin_unlock_irqrestore(&adapter->tx_lock, flags); |
f017f14b | 1475 | #endif |
1da177e4 LT |
1476 | |
1477 | if(adapter->vlgrp && vlan_tx_tag_present(skb)) { | |
1478 | tx_flags |= IXGB_TX_FLAGS_VLAN; | |
1479 | vlan_id = vlan_tx_tag_get(skb); | |
1480 | } | |
1481 | ||
1482 | first = adapter->tx_ring.next_to_use; | |
1483 | ||
1484 | tso = ixgb_tso(adapter, skb); | |
1485 | if (tso < 0) { | |
1486 | dev_kfree_skb_any(skb); | |
f017f14b AK |
1487 | #ifdef NETIF_F_LLTX |
1488 | spin_unlock_irqrestore(&adapter->tx_lock, flags); | |
1489 | #endif | |
1da177e4 LT |
1490 | return NETDEV_TX_OK; |
1491 | } | |
1492 | ||
96f9c2e2 | 1493 | if (likely(tso)) |
1da177e4 LT |
1494 | tx_flags |= IXGB_TX_FLAGS_TSO; |
1495 | else if(ixgb_tx_csum(adapter, skb)) | |
1496 | tx_flags |= IXGB_TX_FLAGS_CSUM; | |
1497 | ||
1498 | ixgb_tx_queue(adapter, ixgb_tx_map(adapter, skb, first), vlan_id, | |
1499 | tx_flags); | |
1500 | ||
1501 | netdev->trans_start = jiffies; | |
1502 | ||
f017f14b AK |
1503 | #ifdef NETIF_F_LLTX |
1504 | /* Make sure there is space in the ring for the next send. */ | |
dfd341e4 | 1505 | ixgb_maybe_stop_tx(netdev, &adapter->tx_ring, DESC_NEEDED); |
f017f14b AK |
1506 | |
1507 | spin_unlock_irqrestore(&adapter->tx_lock, flags); | |
1508 | ||
1509 | #endif | |
1510 | return NETDEV_TX_OK; | |
1da177e4 LT |
1511 | } |
1512 | ||
1513 | /** | |
1514 | * ixgb_tx_timeout - Respond to a Tx Hang | |
1515 | * @netdev: network interface device structure | |
1516 | **/ | |
1517 | ||
1518 | static void | |
1519 | ixgb_tx_timeout(struct net_device *netdev) | |
1520 | { | |
8908c6cd | 1521 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
1522 | |
1523 | /* Do the reset outside of interrupt context */ | |
1524 | schedule_work(&adapter->tx_timeout_task); | |
1525 | } | |
1526 | ||
1527 | static void | |
c4028958 | 1528 | ixgb_tx_timeout_task(struct work_struct *work) |
1da177e4 | 1529 | { |
c4028958 DH |
1530 | struct ixgb_adapter *adapter = |
1531 | container_of(work, struct ixgb_adapter, tx_timeout_task); | |
1da177e4 | 1532 | |
9b8118df | 1533 | adapter->tx_timeout_count++; |
446490ca | 1534 | ixgb_down(adapter, true); |
1da177e4 LT |
1535 | ixgb_up(adapter); |
1536 | } | |
1537 | ||
1538 | /** | |
1539 | * ixgb_get_stats - Get System Network Statistics | |
1540 | * @netdev: network interface device structure | |
1541 | * | |
1542 | * Returns the address of the device statistics structure. | |
1543 | * The statistics are actually updated from the timer callback. | |
1544 | **/ | |
1545 | ||
1546 | static struct net_device_stats * | |
1547 | ixgb_get_stats(struct net_device *netdev) | |
1548 | { | |
8908c6cd | 1549 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
1550 | |
1551 | return &adapter->net_stats; | |
1552 | } | |
1553 | ||
1554 | /** | |
1555 | * ixgb_change_mtu - Change the Maximum Transfer Unit | |
1556 | * @netdev: network interface device structure | |
1557 | * @new_mtu: new value for maximum frame size | |
1558 | * | |
1559 | * Returns 0 on success, negative on failure | |
1560 | **/ | |
1561 | ||
1562 | static int | |
1563 | ixgb_change_mtu(struct net_device *netdev, int new_mtu) | |
1564 | { | |
8908c6cd | 1565 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
1566 | int max_frame = new_mtu + ENET_HEADER_SIZE + ENET_FCS_LENGTH; |
1567 | int old_max_frame = netdev->mtu + ENET_HEADER_SIZE + ENET_FCS_LENGTH; | |
1568 | ||
1569 | ||
1570 | if((max_frame < IXGB_MIN_ENET_FRAME_SIZE_WITHOUT_FCS + ENET_FCS_LENGTH) | |
1571 | || (max_frame > IXGB_MAX_JUMBO_FRAME_SIZE + ENET_FCS_LENGTH)) { | |
ec9c3f5d | 1572 | DPRINTK(PROBE, ERR, "Invalid MTU setting %d\n", new_mtu); |
1da177e4 LT |
1573 | return -EINVAL; |
1574 | } | |
1575 | ||
a3dc3da0 | 1576 | adapter->rx_buffer_len = max_frame + 8; /* + 8 for errata */ |
1da177e4 LT |
1577 | |
1578 | netdev->mtu = new_mtu; | |
1579 | ||
3f3dc0dd | 1580 | if ((old_max_frame != max_frame) && netif_running(netdev)) { |
446490ca | 1581 | ixgb_down(adapter, true); |
1da177e4 LT |
1582 | ixgb_up(adapter); |
1583 | } | |
1584 | ||
1585 | return 0; | |
1586 | } | |
1587 | ||
1588 | /** | |
1589 | * ixgb_update_stats - Update the board statistics counters. | |
1590 | * @adapter: board private structure | |
1591 | **/ | |
1592 | ||
1593 | void | |
1594 | ixgb_update_stats(struct ixgb_adapter *adapter) | |
1595 | { | |
5633684d | 1596 | struct net_device *netdev = adapter->netdev; |
01748fbb LV |
1597 | struct pci_dev *pdev = adapter->pdev; |
1598 | ||
1599 | /* Prevent stats update while adapter is being reset */ | |
81b1955e | 1600 | if (pci_channel_offline(pdev)) |
01748fbb | 1601 | return; |
5633684d MC |
1602 | |
1603 | if((netdev->flags & IFF_PROMISC) || (netdev->flags & IFF_ALLMULTI) || | |
1604 | (netdev->mc_count > IXGB_MAX_NUM_MULTICAST_ADDRESSES)) { | |
1605 | u64 multi = IXGB_READ_REG(&adapter->hw, MPRCL); | |
1606 | u32 bcast_l = IXGB_READ_REG(&adapter->hw, BPRCL); | |
1607 | u32 bcast_h = IXGB_READ_REG(&adapter->hw, BPRCH); | |
1608 | u64 bcast = ((u64)bcast_h << 32) | bcast_l; | |
1609 | ||
1610 | multi |= ((u64)IXGB_READ_REG(&adapter->hw, MPRCH) << 32); | |
1611 | /* fix up multicast stats by removing broadcasts */ | |
7b89178d MC |
1612 | if(multi >= bcast) |
1613 | multi -= bcast; | |
5633684d MC |
1614 | |
1615 | adapter->stats.mprcl += (multi & 0xFFFFFFFF); | |
1616 | adapter->stats.mprch += (multi >> 32); | |
1617 | adapter->stats.bprcl += bcast_l; | |
1618 | adapter->stats.bprch += bcast_h; | |
1619 | } else { | |
1620 | adapter->stats.mprcl += IXGB_READ_REG(&adapter->hw, MPRCL); | |
1621 | adapter->stats.mprch += IXGB_READ_REG(&adapter->hw, MPRCH); | |
1622 | adapter->stats.bprcl += IXGB_READ_REG(&adapter->hw, BPRCL); | |
1623 | adapter->stats.bprch += IXGB_READ_REG(&adapter->hw, BPRCH); | |
1624 | } | |
1da177e4 LT |
1625 | adapter->stats.tprl += IXGB_READ_REG(&adapter->hw, TPRL); |
1626 | adapter->stats.tprh += IXGB_READ_REG(&adapter->hw, TPRH); | |
1627 | adapter->stats.gprcl += IXGB_READ_REG(&adapter->hw, GPRCL); | |
1628 | adapter->stats.gprch += IXGB_READ_REG(&adapter->hw, GPRCH); | |
1da177e4 LT |
1629 | adapter->stats.uprcl += IXGB_READ_REG(&adapter->hw, UPRCL); |
1630 | adapter->stats.uprch += IXGB_READ_REG(&adapter->hw, UPRCH); | |
1631 | adapter->stats.vprcl += IXGB_READ_REG(&adapter->hw, VPRCL); | |
1632 | adapter->stats.vprch += IXGB_READ_REG(&adapter->hw, VPRCH); | |
1633 | adapter->stats.jprcl += IXGB_READ_REG(&adapter->hw, JPRCL); | |
1634 | adapter->stats.jprch += IXGB_READ_REG(&adapter->hw, JPRCH); | |
1635 | adapter->stats.gorcl += IXGB_READ_REG(&adapter->hw, GORCL); | |
1636 | adapter->stats.gorch += IXGB_READ_REG(&adapter->hw, GORCH); | |
1637 | adapter->stats.torl += IXGB_READ_REG(&adapter->hw, TORL); | |
1638 | adapter->stats.torh += IXGB_READ_REG(&adapter->hw, TORH); | |
1639 | adapter->stats.rnbc += IXGB_READ_REG(&adapter->hw, RNBC); | |
1640 | adapter->stats.ruc += IXGB_READ_REG(&adapter->hw, RUC); | |
1641 | adapter->stats.roc += IXGB_READ_REG(&adapter->hw, ROC); | |
1642 | adapter->stats.rlec += IXGB_READ_REG(&adapter->hw, RLEC); | |
1643 | adapter->stats.crcerrs += IXGB_READ_REG(&adapter->hw, CRCERRS); | |
1644 | adapter->stats.icbc += IXGB_READ_REG(&adapter->hw, ICBC); | |
1645 | adapter->stats.ecbc += IXGB_READ_REG(&adapter->hw, ECBC); | |
1646 | adapter->stats.mpc += IXGB_READ_REG(&adapter->hw, MPC); | |
1647 | adapter->stats.tptl += IXGB_READ_REG(&adapter->hw, TPTL); | |
1648 | adapter->stats.tpth += IXGB_READ_REG(&adapter->hw, TPTH); | |
1649 | adapter->stats.gptcl += IXGB_READ_REG(&adapter->hw, GPTCL); | |
1650 | adapter->stats.gptch += IXGB_READ_REG(&adapter->hw, GPTCH); | |
1651 | adapter->stats.bptcl += IXGB_READ_REG(&adapter->hw, BPTCL); | |
1652 | adapter->stats.bptch += IXGB_READ_REG(&adapter->hw, BPTCH); | |
1653 | adapter->stats.mptcl += IXGB_READ_REG(&adapter->hw, MPTCL); | |
1654 | adapter->stats.mptch += IXGB_READ_REG(&adapter->hw, MPTCH); | |
1655 | adapter->stats.uptcl += IXGB_READ_REG(&adapter->hw, UPTCL); | |
1656 | adapter->stats.uptch += IXGB_READ_REG(&adapter->hw, UPTCH); | |
1657 | adapter->stats.vptcl += IXGB_READ_REG(&adapter->hw, VPTCL); | |
1658 | adapter->stats.vptch += IXGB_READ_REG(&adapter->hw, VPTCH); | |
1659 | adapter->stats.jptcl += IXGB_READ_REG(&adapter->hw, JPTCL); | |
1660 | adapter->stats.jptch += IXGB_READ_REG(&adapter->hw, JPTCH); | |
1661 | adapter->stats.gotcl += IXGB_READ_REG(&adapter->hw, GOTCL); | |
1662 | adapter->stats.gotch += IXGB_READ_REG(&adapter->hw, GOTCH); | |
1663 | adapter->stats.totl += IXGB_READ_REG(&adapter->hw, TOTL); | |
1664 | adapter->stats.toth += IXGB_READ_REG(&adapter->hw, TOTH); | |
1665 | adapter->stats.dc += IXGB_READ_REG(&adapter->hw, DC); | |
1666 | adapter->stats.plt64c += IXGB_READ_REG(&adapter->hw, PLT64C); | |
1667 | adapter->stats.tsctc += IXGB_READ_REG(&adapter->hw, TSCTC); | |
1668 | adapter->stats.tsctfc += IXGB_READ_REG(&adapter->hw, TSCTFC); | |
1669 | adapter->stats.ibic += IXGB_READ_REG(&adapter->hw, IBIC); | |
1670 | adapter->stats.rfc += IXGB_READ_REG(&adapter->hw, RFC); | |
1671 | adapter->stats.lfc += IXGB_READ_REG(&adapter->hw, LFC); | |
1672 | adapter->stats.pfrc += IXGB_READ_REG(&adapter->hw, PFRC); | |
1673 | adapter->stats.pftc += IXGB_READ_REG(&adapter->hw, PFTC); | |
1674 | adapter->stats.mcfrc += IXGB_READ_REG(&adapter->hw, MCFRC); | |
1675 | adapter->stats.mcftc += IXGB_READ_REG(&adapter->hw, MCFTC); | |
1676 | adapter->stats.xonrxc += IXGB_READ_REG(&adapter->hw, XONRXC); | |
1677 | adapter->stats.xontxc += IXGB_READ_REG(&adapter->hw, XONTXC); | |
1678 | adapter->stats.xoffrxc += IXGB_READ_REG(&adapter->hw, XOFFRXC); | |
1679 | adapter->stats.xofftxc += IXGB_READ_REG(&adapter->hw, XOFFTXC); | |
1680 | adapter->stats.rjc += IXGB_READ_REG(&adapter->hw, RJC); | |
1681 | ||
1682 | /* Fill out the OS statistics structure */ | |
1683 | ||
1684 | adapter->net_stats.rx_packets = adapter->stats.gprcl; | |
1685 | adapter->net_stats.tx_packets = adapter->stats.gptcl; | |
1686 | adapter->net_stats.rx_bytes = adapter->stats.gorcl; | |
1687 | adapter->net_stats.tx_bytes = adapter->stats.gotcl; | |
1688 | adapter->net_stats.multicast = adapter->stats.mprcl; | |
1689 | adapter->net_stats.collisions = 0; | |
1690 | ||
1691 | /* ignore RLEC as it reports errors for padded (<64bytes) frames | |
1692 | * with a length in the type/len field */ | |
1693 | adapter->net_stats.rx_errors = | |
1694 | /* adapter->stats.rnbc + */ adapter->stats.crcerrs + | |
1695 | adapter->stats.ruc + | |
1696 | adapter->stats.roc /*+ adapter->stats.rlec */ + | |
1697 | adapter->stats.icbc + | |
1698 | adapter->stats.ecbc + adapter->stats.mpc; | |
1699 | ||
1da177e4 LT |
1700 | /* see above |
1701 | * adapter->net_stats.rx_length_errors = adapter->stats.rlec; | |
1702 | */ | |
1703 | ||
1704 | adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs; | |
1705 | adapter->net_stats.rx_fifo_errors = adapter->stats.mpc; | |
1706 | adapter->net_stats.rx_missed_errors = adapter->stats.mpc; | |
1707 | adapter->net_stats.rx_over_errors = adapter->stats.mpc; | |
1708 | ||
1709 | adapter->net_stats.tx_errors = 0; | |
1710 | adapter->net_stats.rx_frame_errors = 0; | |
1711 | adapter->net_stats.tx_aborted_errors = 0; | |
1712 | adapter->net_stats.tx_carrier_errors = 0; | |
1713 | adapter->net_stats.tx_fifo_errors = 0; | |
1714 | adapter->net_stats.tx_heartbeat_errors = 0; | |
1715 | adapter->net_stats.tx_window_errors = 0; | |
1716 | } | |
1717 | ||
1718 | #define IXGB_MAX_INTR 10 | |
1719 | /** | |
1720 | * ixgb_intr - Interrupt Handler | |
1721 | * @irq: interrupt number | |
1722 | * @data: pointer to a network interface device structure | |
1da177e4 LT |
1723 | **/ |
1724 | ||
1725 | static irqreturn_t | |
7d12e780 | 1726 | ixgb_intr(int irq, void *data) |
1da177e4 LT |
1727 | { |
1728 | struct net_device *netdev = data; | |
8908c6cd | 1729 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
1da177e4 | 1730 | struct ixgb_hw *hw = &adapter->hw; |
222441a6 | 1731 | u32 icr = IXGB_READ_REG(hw, ICR); |
1da177e4 LT |
1732 | #ifndef CONFIG_IXGB_NAPI |
1733 | unsigned int i; | |
1734 | #endif | |
1735 | ||
1736 | if(unlikely(!icr)) | |
1737 | return IRQ_NONE; /* Not our interrupt */ | |
1738 | ||
bab2bce7 JB |
1739 | if (unlikely(icr & (IXGB_INT_RXSEQ | IXGB_INT_LSC))) |
1740 | if (!test_bit(__IXGB_DOWN, &adapter->flags)) | |
1741 | mod_timer(&adapter->watchdog_timer, jiffies); | |
1da177e4 LT |
1742 | |
1743 | #ifdef CONFIG_IXGB_NAPI | |
bea3348e | 1744 | if (netif_rx_schedule_prep(netdev, &adapter->napi)) { |
1da177e4 LT |
1745 | |
1746 | /* Disable interrupts and register for poll. The flush | |
1747 | of the posted write is intentionally left out. | |
1748 | */ | |
1749 | ||
1da177e4 | 1750 | IXGB_WRITE_REG(&adapter->hw, IMC, ~0); |
bea3348e | 1751 | __netif_rx_schedule(netdev, &adapter->napi); |
1da177e4 LT |
1752 | } |
1753 | #else | |
1754 | /* yes, that is actually a & and it is meant to make sure that | |
1755 | * every pass through this for loop checks both receive and | |
1756 | * transmit queues for completed descriptors, intended to | |
1757 | * avoid starvation issues and assist tx/rx fairness. */ | |
1758 | for(i = 0; i < IXGB_MAX_INTR; i++) | |
1759 | if(!ixgb_clean_rx_irq(adapter) & | |
1760 | !ixgb_clean_tx_irq(adapter)) | |
1761 | break; | |
1762 | #endif | |
1763 | return IRQ_HANDLED; | |
1764 | } | |
1765 | ||
1766 | #ifdef CONFIG_IXGB_NAPI | |
1767 | /** | |
1768 | * ixgb_clean - NAPI Rx polling callback | |
1769 | * @adapter: board private structure | |
1770 | **/ | |
1771 | ||
1772 | static int | |
bea3348e | 1773 | ixgb_clean(struct napi_struct *napi, int budget) |
1da177e4 | 1774 | { |
bea3348e SH |
1775 | struct ixgb_adapter *adapter = container_of(napi, struct ixgb_adapter, napi); |
1776 | struct net_device *netdev = adapter->netdev; | |
1da177e4 LT |
1777 | int work_done = 0; |
1778 | ||
53e52c72 | 1779 | ixgb_clean_tx_irq(adapter); |
bea3348e | 1780 | ixgb_clean_rx_irq(adapter, &work_done, budget); |
1da177e4 | 1781 | |
53e52c72 DM |
1782 | /* If budget not fully consumed, exit the polling mode */ |
1783 | if (work_done < budget) { | |
bea3348e | 1784 | netif_rx_complete(netdev, napi); |
1da177e4 | 1785 | ixgb_irq_enable(adapter); |
1da177e4 LT |
1786 | } |
1787 | ||
bea3348e | 1788 | return work_done; |
1da177e4 LT |
1789 | } |
1790 | #endif | |
1791 | ||
1792 | /** | |
1793 | * ixgb_clean_tx_irq - Reclaim resources after transmit completes | |
1794 | * @adapter: board private structure | |
1795 | **/ | |
1796 | ||
446490ca | 1797 | static bool |
1da177e4 LT |
1798 | ixgb_clean_tx_irq(struct ixgb_adapter *adapter) |
1799 | { | |
1800 | struct ixgb_desc_ring *tx_ring = &adapter->tx_ring; | |
1801 | struct net_device *netdev = adapter->netdev; | |
1802 | struct ixgb_tx_desc *tx_desc, *eop_desc; | |
1803 | struct ixgb_buffer *buffer_info; | |
1804 | unsigned int i, eop; | |
446490ca | 1805 | bool cleaned = false; |
1da177e4 LT |
1806 | |
1807 | i = tx_ring->next_to_clean; | |
1808 | eop = tx_ring->buffer_info[i].next_to_watch; | |
1809 | eop_desc = IXGB_TX_DESC(*tx_ring, eop); | |
1810 | ||
1811 | while(eop_desc->status & IXGB_TX_DESC_STATUS_DD) { | |
1812 | ||
446490ca | 1813 | for (cleaned = false; !cleaned; ) { |
1da177e4 LT |
1814 | tx_desc = IXGB_TX_DESC(*tx_ring, i); |
1815 | buffer_info = &tx_ring->buffer_info[i]; | |
1816 | ||
1817 | if (tx_desc->popts | |
1818 | & (IXGB_TX_DESC_POPTS_TXSM | | |
1819 | IXGB_TX_DESC_POPTS_IXSM)) | |
1820 | adapter->hw_csum_tx_good++; | |
1821 | ||
1822 | ixgb_unmap_and_free_tx_resource(adapter, buffer_info); | |
1823 | ||
222441a6 | 1824 | *(u32 *)&(tx_desc->status) = 0; |
1da177e4 LT |
1825 | |
1826 | cleaned = (i == eop); | |
1827 | if(++i == tx_ring->count) i = 0; | |
1828 | } | |
1829 | ||
1830 | eop = tx_ring->buffer_info[i].next_to_watch; | |
1831 | eop_desc = IXGB_TX_DESC(*tx_ring, eop); | |
1832 | } | |
1833 | ||
1834 | tx_ring->next_to_clean = i; | |
1835 | ||
0f8ecbad JB |
1836 | if (unlikely(cleaned && netif_carrier_ok(netdev) && |
1837 | IXGB_DESC_UNUSED(tx_ring) >= DESC_NEEDED)) { | |
1838 | /* Make sure that anybody stopping the queue after this | |
1839 | * sees the new next_to_clean. */ | |
1840 | smp_mb(); | |
1841 | ||
1842 | if (netif_queue_stopped(netdev) && | |
1843 | !(test_bit(__IXGB_DOWN, &adapter->flags))) { | |
3352a3b2 | 1844 | netif_wake_queue(netdev); |
0f8ecbad JB |
1845 | ++adapter->restart_queue; |
1846 | } | |
1da177e4 | 1847 | } |
1da177e4 LT |
1848 | |
1849 | if(adapter->detect_tx_hung) { | |
1850 | /* detect a transmit hang in hardware, this serializes the | |
1851 | * check with the clearing of time_stamp and movement of i */ | |
446490ca | 1852 | adapter->detect_tx_hung = false; |
9b8118df AK |
1853 | if (tx_ring->buffer_info[eop].dma && |
1854 | time_after(jiffies, tx_ring->buffer_info[eop].time_stamp + HZ) | |
1da177e4 | 1855 | && !(IXGB_READ_REG(&adapter->hw, STATUS) & |
9b8118df AK |
1856 | IXGB_STATUS_TXOFF)) { |
1857 | /* detected Tx unit hang */ | |
1858 | DPRINTK(DRV, ERR, "Detected Tx Unit Hang\n" | |
1859 | " TDH <%x>\n" | |
1860 | " TDT <%x>\n" | |
1861 | " next_to_use <%x>\n" | |
1862 | " next_to_clean <%x>\n" | |
1863 | "buffer_info[next_to_clean]\n" | |
1864 | " time_stamp <%lx>\n" | |
1865 | " next_to_watch <%x>\n" | |
1866 | " jiffies <%lx>\n" | |
1867 | " next_to_watch.status <%x>\n", | |
1868 | IXGB_READ_REG(&adapter->hw, TDH), | |
1869 | IXGB_READ_REG(&adapter->hw, TDT), | |
1870 | tx_ring->next_to_use, | |
1871 | tx_ring->next_to_clean, | |
1872 | tx_ring->buffer_info[eop].time_stamp, | |
1873 | eop, | |
1874 | jiffies, | |
1875 | eop_desc->status); | |
1da177e4 | 1876 | netif_stop_queue(netdev); |
9b8118df | 1877 | } |
1da177e4 LT |
1878 | } |
1879 | ||
1880 | return cleaned; | |
1881 | } | |
1882 | ||
1883 | /** | |
1884 | * ixgb_rx_checksum - Receive Checksum Offload for 82597. | |
1885 | * @adapter: board private structure | |
1886 | * @rx_desc: receive descriptor | |
1887 | * @sk_buff: socket buffer with received data | |
1888 | **/ | |
1889 | ||
235949d1 | 1890 | static void |
1da177e4 LT |
1891 | ixgb_rx_checksum(struct ixgb_adapter *adapter, |
1892 | struct ixgb_rx_desc *rx_desc, | |
1893 | struct sk_buff *skb) | |
1894 | { | |
1895 | /* Ignore Checksum bit is set OR | |
1896 | * TCP Checksum has not been calculated | |
1897 | */ | |
1898 | if((rx_desc->status & IXGB_RX_DESC_STATUS_IXSM) || | |
1899 | (!(rx_desc->status & IXGB_RX_DESC_STATUS_TCPCS))) { | |
1900 | skb->ip_summed = CHECKSUM_NONE; | |
1901 | return; | |
1902 | } | |
1903 | ||
1904 | /* At this point we know the hardware did the TCP checksum */ | |
1905 | /* now look at the TCP checksum error bit */ | |
1906 | if(rx_desc->errors & IXGB_RX_DESC_ERRORS_TCPE) { | |
1907 | /* let the stack verify checksum errors */ | |
1908 | skb->ip_summed = CHECKSUM_NONE; | |
1909 | adapter->hw_csum_rx_error++; | |
1910 | } else { | |
1911 | /* TCP checksum is good */ | |
1912 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
1913 | adapter->hw_csum_rx_good++; | |
1914 | } | |
1915 | } | |
1916 | ||
1917 | /** | |
1918 | * ixgb_clean_rx_irq - Send received data up the network stack, | |
1919 | * @adapter: board private structure | |
1920 | **/ | |
1921 | ||
446490ca | 1922 | static bool |
1da177e4 LT |
1923 | #ifdef CONFIG_IXGB_NAPI |
1924 | ixgb_clean_rx_irq(struct ixgb_adapter *adapter, int *work_done, int work_to_do) | |
1925 | #else | |
1926 | ixgb_clean_rx_irq(struct ixgb_adapter *adapter) | |
1927 | #endif | |
1928 | { | |
1929 | struct ixgb_desc_ring *rx_ring = &adapter->rx_ring; | |
1930 | struct net_device *netdev = adapter->netdev; | |
1931 | struct pci_dev *pdev = adapter->pdev; | |
1932 | struct ixgb_rx_desc *rx_desc, *next_rxd; | |
1933 | struct ixgb_buffer *buffer_info, *next_buffer, *next2_buffer; | |
222441a6 | 1934 | u32 length; |
1da177e4 | 1935 | unsigned int i, j; |
446490ca | 1936 | bool cleaned = false; |
1da177e4 LT |
1937 | |
1938 | i = rx_ring->next_to_clean; | |
1939 | rx_desc = IXGB_RX_DESC(*rx_ring, i); | |
1940 | buffer_info = &rx_ring->buffer_info[i]; | |
1941 | ||
1942 | while(rx_desc->status & IXGB_RX_DESC_STATUS_DD) { | |
f404de1c MC |
1943 | struct sk_buff *skb, *next_skb; |
1944 | u8 status; | |
1da177e4 LT |
1945 | |
1946 | #ifdef CONFIG_IXGB_NAPI | |
1947 | if(*work_done >= work_to_do) | |
1948 | break; | |
1949 | ||
1950 | (*work_done)++; | |
1951 | #endif | |
f404de1c | 1952 | status = rx_desc->status; |
1da177e4 | 1953 | skb = buffer_info->skb; |
1dfdd7df | 1954 | buffer_info->skb = NULL; |
f404de1c | 1955 | |
1da177e4 LT |
1956 | prefetch(skb->data); |
1957 | ||
1958 | if(++i == rx_ring->count) i = 0; | |
1959 | next_rxd = IXGB_RX_DESC(*rx_ring, i); | |
1960 | prefetch(next_rxd); | |
1961 | ||
1962 | if((j = i + 1) == rx_ring->count) j = 0; | |
1963 | next2_buffer = &rx_ring->buffer_info[j]; | |
1964 | prefetch(next2_buffer); | |
1965 | ||
1966 | next_buffer = &rx_ring->buffer_info[i]; | |
1967 | next_skb = next_buffer->skb; | |
1968 | prefetch(next_skb); | |
1969 | ||
446490ca | 1970 | cleaned = true; |
1da177e4 LT |
1971 | |
1972 | pci_unmap_single(pdev, | |
1973 | buffer_info->dma, | |
1974 | buffer_info->length, | |
1975 | PCI_DMA_FROMDEVICE); | |
1976 | ||
1977 | length = le16_to_cpu(rx_desc->length); | |
1978 | ||
f404de1c | 1979 | if(unlikely(!(status & IXGB_RX_DESC_STATUS_EOP))) { |
1da177e4 LT |
1980 | |
1981 | /* All receives must fit into a single buffer */ | |
1982 | ||
1983 | IXGB_DBG("Receive packet consumed multiple buffers " | |
1984 | "length<%x>\n", length); | |
1985 | ||
1986 | dev_kfree_skb_irq(skb); | |
f404de1c | 1987 | goto rxdesc_done; |
1da177e4 LT |
1988 | } |
1989 | ||
1990 | if (unlikely(rx_desc->errors | |
1991 | & (IXGB_RX_DESC_ERRORS_CE | IXGB_RX_DESC_ERRORS_SE | |
1992 | | IXGB_RX_DESC_ERRORS_P | | |
1993 | IXGB_RX_DESC_ERRORS_RXE))) { | |
1994 | ||
1995 | dev_kfree_skb_irq(skb); | |
f404de1c | 1996 | goto rxdesc_done; |
1da177e4 LT |
1997 | } |
1998 | ||
6b900bb4 AK |
1999 | /* code added for copybreak, this should improve |
2000 | * performance for small packets with large amounts | |
2001 | * of reassembly being done in the stack */ | |
2002 | #define IXGB_CB_LENGTH 256 | |
2003 | if (length < IXGB_CB_LENGTH) { | |
2004 | struct sk_buff *new_skb = | |
5791704f | 2005 | netdev_alloc_skb(netdev, length + NET_IP_ALIGN); |
6b900bb4 AK |
2006 | if (new_skb) { |
2007 | skb_reserve(new_skb, NET_IP_ALIGN); | |
27d7ff46 ACM |
2008 | skb_copy_to_linear_data_offset(new_skb, |
2009 | -NET_IP_ALIGN, | |
2010 | (skb->data - | |
2011 | NET_IP_ALIGN), | |
2012 | (length + | |
2013 | NET_IP_ALIGN)); | |
6b900bb4 AK |
2014 | /* save the skb in buffer_info as good */ |
2015 | buffer_info->skb = skb; | |
2016 | skb = new_skb; | |
2017 | } | |
2018 | } | |
2019 | /* end copybreak code */ | |
2020 | ||
1da177e4 LT |
2021 | /* Good Receive */ |
2022 | skb_put(skb, length); | |
2023 | ||
2024 | /* Receive Checksum Offload */ | |
2025 | ixgb_rx_checksum(adapter, rx_desc, skb); | |
2026 | ||
2027 | skb->protocol = eth_type_trans(skb, netdev); | |
2028 | #ifdef CONFIG_IXGB_NAPI | |
f404de1c | 2029 | if(adapter->vlgrp && (status & IXGB_RX_DESC_STATUS_VP)) { |
1da177e4 | 2030 | vlan_hwaccel_receive_skb(skb, adapter->vlgrp, |
38b22195 | 2031 | le16_to_cpu(rx_desc->special)); |
1da177e4 LT |
2032 | } else { |
2033 | netif_receive_skb(skb); | |
2034 | } | |
2035 | #else /* CONFIG_IXGB_NAPI */ | |
f404de1c | 2036 | if(adapter->vlgrp && (status & IXGB_RX_DESC_STATUS_VP)) { |
1da177e4 | 2037 | vlan_hwaccel_rx(skb, adapter->vlgrp, |
38b22195 | 2038 | le16_to_cpu(rx_desc->special)); |
1da177e4 LT |
2039 | } else { |
2040 | netif_rx(skb); | |
2041 | } | |
2042 | #endif /* CONFIG_IXGB_NAPI */ | |
2043 | netdev->last_rx = jiffies; | |
2044 | ||
f404de1c MC |
2045 | rxdesc_done: |
2046 | /* clean up descriptor, might be written over by hw */ | |
1da177e4 | 2047 | rx_desc->status = 0; |
1da177e4 | 2048 | |
f404de1c | 2049 | /* use prefetched values */ |
1da177e4 LT |
2050 | rx_desc = next_rxd; |
2051 | buffer_info = next_buffer; | |
2052 | } | |
2053 | ||
2054 | rx_ring->next_to_clean = i; | |
2055 | ||
2056 | ixgb_alloc_rx_buffers(adapter); | |
2057 | ||
2058 | return cleaned; | |
2059 | } | |
2060 | ||
2061 | /** | |
2062 | * ixgb_alloc_rx_buffers - Replace used receive buffers | |
2063 | * @adapter: address of board private structure | |
2064 | **/ | |
2065 | ||
2066 | static void | |
2067 | ixgb_alloc_rx_buffers(struct ixgb_adapter *adapter) | |
2068 | { | |
2069 | struct ixgb_desc_ring *rx_ring = &adapter->rx_ring; | |
2070 | struct net_device *netdev = adapter->netdev; | |
2071 | struct pci_dev *pdev = adapter->pdev; | |
2072 | struct ixgb_rx_desc *rx_desc; | |
2073 | struct ixgb_buffer *buffer_info; | |
2074 | struct sk_buff *skb; | |
2075 | unsigned int i; | |
1da177e4 LT |
2076 | long cleancount; |
2077 | ||
2078 | i = rx_ring->next_to_use; | |
2079 | buffer_info = &rx_ring->buffer_info[i]; | |
2080 | cleancount = IXGB_DESC_UNUSED(rx_ring); | |
2081 | ||
1da177e4 | 2082 | |
41639fed MC |
2083 | /* leave three descriptors unused */ |
2084 | while(--cleancount > 2) { | |
1dfdd7df | 2085 | /* recycle! its good for you */ |
69c7a940 AK |
2086 | skb = buffer_info->skb; |
2087 | if (skb) { | |
1dfdd7df AK |
2088 | skb_trim(skb, 0); |
2089 | goto map_skb; | |
2090 | } | |
1da177e4 | 2091 | |
69c7a940 AK |
2092 | skb = netdev_alloc_skb(netdev, adapter->rx_buffer_len |
2093 | + NET_IP_ALIGN); | |
1dfdd7df | 2094 | if (unlikely(!skb)) { |
1da177e4 | 2095 | /* Better luck next round */ |
1dfdd7df | 2096 | adapter->alloc_rx_buff_failed++; |
1da177e4 LT |
2097 | break; |
2098 | } | |
2099 | ||
2100 | /* Make buffer alignment 2 beyond a 16 byte boundary | |
2101 | * this will result in a 16 byte aligned IP header after | |
2102 | * the 14 byte MAC header is removed | |
2103 | */ | |
2104 | skb_reserve(skb, NET_IP_ALIGN); | |
2105 | ||
1da177e4 LT |
2106 | buffer_info->skb = skb; |
2107 | buffer_info->length = adapter->rx_buffer_len; | |
1dfdd7df AK |
2108 | map_skb: |
2109 | buffer_info->dma = pci_map_single(pdev, | |
2110 | skb->data, | |
2111 | adapter->rx_buffer_len, | |
2112 | PCI_DMA_FROMDEVICE); | |
1da177e4 | 2113 | |
1dfdd7df | 2114 | rx_desc = IXGB_RX_DESC(*rx_ring, i); |
1da177e4 | 2115 | rx_desc->buff_addr = cpu_to_le64(buffer_info->dma); |
41639fed MC |
2116 | /* guarantee DD bit not set now before h/w gets descriptor |
2117 | * this is the rest of the workaround for h/w double | |
2118 | * writeback. */ | |
2119 | rx_desc->status = 0; | |
1da177e4 | 2120 | |
1da177e4 LT |
2121 | |
2122 | if(++i == rx_ring->count) i = 0; | |
2123 | buffer_info = &rx_ring->buffer_info[i]; | |
2124 | } | |
2125 | ||
1dfdd7df AK |
2126 | if (likely(rx_ring->next_to_use != i)) { |
2127 | rx_ring->next_to_use = i; | |
2128 | if (unlikely(i-- == 0)) | |
2129 | i = (rx_ring->count - 1); | |
2130 | ||
2131 | /* Force memory writes to complete before letting h/w | |
2132 | * know there are new descriptors to fetch. (Only | |
2133 | * applicable for weak-ordered memory model archs, such | |
2134 | * as IA-64). */ | |
2135 | wmb(); | |
2136 | IXGB_WRITE_REG(&adapter->hw, RDT, i); | |
2137 | } | |
1da177e4 LT |
2138 | } |
2139 | ||
2140 | /** | |
2141 | * ixgb_vlan_rx_register - enables or disables vlan tagging/stripping. | |
2142 | * | |
2143 | * @param netdev network interface device structure | |
2144 | * @param grp indicates to enable or disable tagging/stripping | |
2145 | **/ | |
2146 | static void | |
2147 | ixgb_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp) | |
2148 | { | |
8908c6cd | 2149 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
222441a6 | 2150 | u32 ctrl, rctl; |
1da177e4 LT |
2151 | |
2152 | ixgb_irq_disable(adapter); | |
2153 | adapter->vlgrp = grp; | |
2154 | ||
2155 | if(grp) { | |
2156 | /* enable VLAN tag insert/strip */ | |
2157 | ctrl = IXGB_READ_REG(&adapter->hw, CTRL0); | |
2158 | ctrl |= IXGB_CTRL0_VME; | |
2159 | IXGB_WRITE_REG(&adapter->hw, CTRL0, ctrl); | |
2160 | ||
2161 | /* enable VLAN receive filtering */ | |
2162 | ||
2163 | rctl = IXGB_READ_REG(&adapter->hw, RCTL); | |
2164 | rctl |= IXGB_RCTL_VFE; | |
2165 | rctl &= ~IXGB_RCTL_CFIEN; | |
2166 | IXGB_WRITE_REG(&adapter->hw, RCTL, rctl); | |
2167 | } else { | |
2168 | /* disable VLAN tag insert/strip */ | |
2169 | ||
2170 | ctrl = IXGB_READ_REG(&adapter->hw, CTRL0); | |
2171 | ctrl &= ~IXGB_CTRL0_VME; | |
2172 | IXGB_WRITE_REG(&adapter->hw, CTRL0, ctrl); | |
2173 | ||
2174 | /* disable VLAN filtering */ | |
2175 | ||
2176 | rctl = IXGB_READ_REG(&adapter->hw, RCTL); | |
2177 | rctl &= ~IXGB_RCTL_VFE; | |
2178 | IXGB_WRITE_REG(&adapter->hw, RCTL, rctl); | |
2179 | } | |
2180 | ||
bab2bce7 JB |
2181 | /* don't enable interrupts unless we are UP */ |
2182 | if (adapter->netdev->flags & IFF_UP) | |
2183 | ixgb_irq_enable(adapter); | |
1da177e4 LT |
2184 | } |
2185 | ||
2186 | static void | |
222441a6 | 2187 | ixgb_vlan_rx_add_vid(struct net_device *netdev, u16 vid) |
1da177e4 | 2188 | { |
8908c6cd | 2189 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
222441a6 | 2190 | u32 vfta, index; |
1da177e4 LT |
2191 | |
2192 | /* add VID to filter table */ | |
2193 | ||
2194 | index = (vid >> 5) & 0x7F; | |
2195 | vfta = IXGB_READ_REG_ARRAY(&adapter->hw, VFTA, index); | |
2196 | vfta |= (1 << (vid & 0x1F)); | |
2197 | ixgb_write_vfta(&adapter->hw, index, vfta); | |
2198 | } | |
2199 | ||
2200 | static void | |
222441a6 | 2201 | ixgb_vlan_rx_kill_vid(struct net_device *netdev, u16 vid) |
1da177e4 | 2202 | { |
8908c6cd | 2203 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
222441a6 | 2204 | u32 vfta, index; |
1da177e4 LT |
2205 | |
2206 | ixgb_irq_disable(adapter); | |
2207 | ||
5c15bdec | 2208 | vlan_group_set_device(adapter->vlgrp, vid, NULL); |
1da177e4 | 2209 | |
bab2bce7 JB |
2210 | /* don't enable interrupts unless we are UP */ |
2211 | if (adapter->netdev->flags & IFF_UP) | |
2212 | ixgb_irq_enable(adapter); | |
1da177e4 | 2213 | |
bab2bce7 | 2214 | /* remove VID from filter table */ |
1da177e4 LT |
2215 | |
2216 | index = (vid >> 5) & 0x7F; | |
2217 | vfta = IXGB_READ_REG_ARRAY(&adapter->hw, VFTA, index); | |
2218 | vfta &= ~(1 << (vid & 0x1F)); | |
2219 | ixgb_write_vfta(&adapter->hw, index, vfta); | |
2220 | } | |
2221 | ||
2222 | static void | |
2223 | ixgb_restore_vlan(struct ixgb_adapter *adapter) | |
2224 | { | |
2225 | ixgb_vlan_rx_register(adapter->netdev, adapter->vlgrp); | |
2226 | ||
2227 | if(adapter->vlgrp) { | |
222441a6 | 2228 | u16 vid; |
1da177e4 | 2229 | for(vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) { |
5c15bdec | 2230 | if(!vlan_group_get_device(adapter->vlgrp, vid)) |
1da177e4 LT |
2231 | continue; |
2232 | ixgb_vlan_rx_add_vid(adapter->netdev, vid); | |
2233 | } | |
2234 | } | |
2235 | } | |
2236 | ||
1da177e4 LT |
2237 | #ifdef CONFIG_NET_POLL_CONTROLLER |
2238 | /* | |
2239 | * Polling 'interrupt' - used by things like netconsole to send skbs | |
2240 | * without having to re-enable interrupts. It's not called while | |
2241 | * the interrupt routine is executing. | |
2242 | */ | |
2243 | ||
2244 | static void ixgb_netpoll(struct net_device *dev) | |
2245 | { | |
f990b426 | 2246 | struct ixgb_adapter *adapter = netdev_priv(dev); |
ac79c82e | 2247 | |
1da177e4 | 2248 | disable_irq(adapter->pdev->irq); |
7d12e780 | 2249 | ixgb_intr(adapter->pdev->irq, dev); |
1da177e4 LT |
2250 | enable_irq(adapter->pdev->irq); |
2251 | } | |
2252 | #endif | |
2253 | ||
01748fbb LV |
2254 | /** |
2255 | * ixgb_io_error_detected() - called when PCI error is detected | |
2256 | * @pdev pointer to pci device with error | |
2257 | * @state pci channel state after error | |
2258 | * | |
2259 | * This callback is called by the PCI subsystem whenever | |
2260 | * a PCI bus error is detected. | |
2261 | */ | |
2262 | static pci_ers_result_t ixgb_io_error_detected (struct pci_dev *pdev, | |
2263 | enum pci_channel_state state) | |
2264 | { | |
2265 | struct net_device *netdev = pci_get_drvdata(pdev); | |
f7d4fa01 | 2266 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
01748fbb LV |
2267 | |
2268 | if(netif_running(netdev)) | |
446490ca | 2269 | ixgb_down(adapter, true); |
01748fbb LV |
2270 | |
2271 | pci_disable_device(pdev); | |
2272 | ||
2273 | /* Request a slot reset. */ | |
2274 | return PCI_ERS_RESULT_NEED_RESET; | |
2275 | } | |
2276 | ||
2277 | /** | |
2278 | * ixgb_io_slot_reset - called after the pci bus has been reset. | |
2279 | * @pdev pointer to pci device with error | |
2280 | * | |
2281 | * This callback is called after the PCI buss has been reset. | |
2282 | * Basically, this tries to restart the card from scratch. | |
2283 | * This is a shortened version of the device probe/discovery code, | |
2284 | * it resembles the first-half of the ixgb_probe() routine. | |
2285 | */ | |
2286 | static pci_ers_result_t ixgb_io_slot_reset (struct pci_dev *pdev) | |
2287 | { | |
2288 | struct net_device *netdev = pci_get_drvdata(pdev); | |
f7d4fa01 | 2289 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
01748fbb LV |
2290 | |
2291 | if(pci_enable_device(pdev)) { | |
2292 | DPRINTK(PROBE, ERR, "Cannot re-enable PCI device after reset.\n"); | |
2293 | return PCI_ERS_RESULT_DISCONNECT; | |
2294 | } | |
2295 | ||
2296 | /* Perform card reset only on one instance of the card */ | |
2297 | if (0 != PCI_FUNC (pdev->devfn)) | |
2298 | return PCI_ERS_RESULT_RECOVERED; | |
2299 | ||
2300 | pci_set_master(pdev); | |
2301 | ||
2302 | netif_carrier_off(netdev); | |
2303 | netif_stop_queue(netdev); | |
2304 | ixgb_reset(adapter); | |
2305 | ||
2306 | /* Make sure the EEPROM is good */ | |
2307 | if(!ixgb_validate_eeprom_checksum(&adapter->hw)) { | |
2308 | DPRINTK(PROBE, ERR, "After reset, the EEPROM checksum is not valid.\n"); | |
2309 | return PCI_ERS_RESULT_DISCONNECT; | |
2310 | } | |
2311 | ixgb_get_ee_mac_addr(&adapter->hw, netdev->dev_addr); | |
2312 | memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len); | |
2313 | ||
2314 | if(!is_valid_ether_addr(netdev->perm_addr)) { | |
2315 | DPRINTK(PROBE, ERR, "After reset, invalid MAC address.\n"); | |
2316 | return PCI_ERS_RESULT_DISCONNECT; | |
2317 | } | |
2318 | ||
2319 | return PCI_ERS_RESULT_RECOVERED; | |
2320 | } | |
2321 | ||
2322 | /** | |
2323 | * ixgb_io_resume - called when its OK to resume normal operations | |
2324 | * @pdev pointer to pci device with error | |
2325 | * | |
2326 | * The error recovery driver tells us that its OK to resume | |
2327 | * normal operation. Implementation resembles the second-half | |
2328 | * of the ixgb_probe() routine. | |
2329 | */ | |
2330 | static void ixgb_io_resume (struct pci_dev *pdev) | |
2331 | { | |
2332 | struct net_device *netdev = pci_get_drvdata(pdev); | |
f7d4fa01 | 2333 | struct ixgb_adapter *adapter = netdev_priv(netdev); |
01748fbb LV |
2334 | |
2335 | pci_set_master(pdev); | |
2336 | ||
2337 | if(netif_running(netdev)) { | |
2338 | if(ixgb_up(adapter)) { | |
2339 | printk ("ixgb: can't bring device back up after reset\n"); | |
2340 | return; | |
2341 | } | |
2342 | } | |
2343 | ||
2344 | netif_device_attach(netdev); | |
2345 | mod_timer(&adapter->watchdog_timer, jiffies); | |
2346 | } | |
2347 | ||
1da177e4 | 2348 | /* ixgb_main.c */ |