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9d5c8243 AK |
1 | /******************************************************************************* |
2 | ||
3 | Intel(R) Gigabit Ethernet Linux driver | |
4 | Copyright(c) 2007 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 | |
13 | more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License along with | |
16 | this program; if not, write to the Free Software Foundation, Inc., | |
17 | 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. | |
18 | ||
19 | The full GNU General Public License is included in this distribution in | |
20 | the file called "COPYING". | |
21 | ||
22 | Contact Information: | |
23 | e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> | |
24 | Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 | |
25 | ||
26 | *******************************************************************************/ | |
27 | ||
28 | #include <linux/module.h> | |
29 | #include <linux/types.h> | |
30 | #include <linux/init.h> | |
31 | #include <linux/vmalloc.h> | |
32 | #include <linux/pagemap.h> | |
33 | #include <linux/netdevice.h> | |
9d5c8243 AK |
34 | #include <linux/ipv6.h> |
35 | #include <net/checksum.h> | |
36 | #include <net/ip6_checksum.h> | |
37 | #include <linux/mii.h> | |
38 | #include <linux/ethtool.h> | |
39 | #include <linux/if_vlan.h> | |
40 | #include <linux/pci.h> | |
c54106bb | 41 | #include <linux/pci-aspm.h> |
9d5c8243 AK |
42 | #include <linux/delay.h> |
43 | #include <linux/interrupt.h> | |
44 | #include <linux/if_ether.h> | |
40a914fa | 45 | #include <linux/aer.h> |
421e02f0 | 46 | #ifdef CONFIG_IGB_DCA |
fe4506b6 JC |
47 | #include <linux/dca.h> |
48 | #endif | |
9d5c8243 AK |
49 | #include "igb.h" |
50 | ||
0024fd00 | 51 | #define DRV_VERSION "1.2.45-k2" |
9d5c8243 AK |
52 | char igb_driver_name[] = "igb"; |
53 | char igb_driver_version[] = DRV_VERSION; | |
54 | static const char igb_driver_string[] = | |
55 | "Intel(R) Gigabit Ethernet Network Driver"; | |
2d064c06 | 56 | static const char igb_copyright[] = "Copyright (c) 2008 Intel Corporation."; |
9d5c8243 | 57 | |
9d5c8243 AK |
58 | static const struct e1000_info *igb_info_tbl[] = { |
59 | [board_82575] = &e1000_82575_info, | |
60 | }; | |
61 | ||
62 | static struct pci_device_id igb_pci_tbl[] = { | |
2d064c06 AD |
63 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576), board_82575 }, |
64 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_FIBER), board_82575 }, | |
65 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_SERDES), board_82575 }, | |
9d5c8243 AK |
66 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82575EB_COPPER), board_82575 }, |
67 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82575EB_FIBER_SERDES), board_82575 }, | |
68 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82575GB_QUAD_COPPER), board_82575 }, | |
69 | /* required last entry */ | |
70 | {0, } | |
71 | }; | |
72 | ||
73 | MODULE_DEVICE_TABLE(pci, igb_pci_tbl); | |
74 | ||
75 | void igb_reset(struct igb_adapter *); | |
76 | static int igb_setup_all_tx_resources(struct igb_adapter *); | |
77 | static int igb_setup_all_rx_resources(struct igb_adapter *); | |
78 | static void igb_free_all_tx_resources(struct igb_adapter *); | |
79 | static void igb_free_all_rx_resources(struct igb_adapter *); | |
9d5c8243 AK |
80 | void igb_update_stats(struct igb_adapter *); |
81 | static int igb_probe(struct pci_dev *, const struct pci_device_id *); | |
82 | static void __devexit igb_remove(struct pci_dev *pdev); | |
83 | static int igb_sw_init(struct igb_adapter *); | |
84 | static int igb_open(struct net_device *); | |
85 | static int igb_close(struct net_device *); | |
86 | static void igb_configure_tx(struct igb_adapter *); | |
87 | static void igb_configure_rx(struct igb_adapter *); | |
88 | static void igb_setup_rctl(struct igb_adapter *); | |
89 | static void igb_clean_all_tx_rings(struct igb_adapter *); | |
90 | static void igb_clean_all_rx_rings(struct igb_adapter *); | |
3b644cf6 MW |
91 | static void igb_clean_tx_ring(struct igb_ring *); |
92 | static void igb_clean_rx_ring(struct igb_ring *); | |
9d5c8243 AK |
93 | static void igb_set_multi(struct net_device *); |
94 | static void igb_update_phy_info(unsigned long); | |
95 | static void igb_watchdog(unsigned long); | |
96 | static void igb_watchdog_task(struct work_struct *); | |
97 | static int igb_xmit_frame_ring_adv(struct sk_buff *, struct net_device *, | |
98 | struct igb_ring *); | |
99 | static int igb_xmit_frame_adv(struct sk_buff *skb, struct net_device *); | |
100 | static struct net_device_stats *igb_get_stats(struct net_device *); | |
101 | static int igb_change_mtu(struct net_device *, int); | |
102 | static int igb_set_mac(struct net_device *, void *); | |
103 | static irqreturn_t igb_intr(int irq, void *); | |
104 | static irqreturn_t igb_intr_msi(int irq, void *); | |
105 | static irqreturn_t igb_msix_other(int irq, void *); | |
106 | static irqreturn_t igb_msix_rx(int irq, void *); | |
107 | static irqreturn_t igb_msix_tx(int irq, void *); | |
108 | static int igb_clean_rx_ring_msix(struct napi_struct *, int); | |
421e02f0 | 109 | #ifdef CONFIG_IGB_DCA |
fe4506b6 JC |
110 | static void igb_update_rx_dca(struct igb_ring *); |
111 | static void igb_update_tx_dca(struct igb_ring *); | |
112 | static void igb_setup_dca(struct igb_adapter *); | |
421e02f0 | 113 | #endif /* CONFIG_IGB_DCA */ |
3b644cf6 | 114 | static bool igb_clean_tx_irq(struct igb_ring *); |
661086df | 115 | static int igb_poll(struct napi_struct *, int); |
3b644cf6 MW |
116 | static bool igb_clean_rx_irq_adv(struct igb_ring *, int *, int); |
117 | static void igb_alloc_rx_buffers_adv(struct igb_ring *, int); | |
9d5c8243 AK |
118 | static int igb_ioctl(struct net_device *, struct ifreq *, int cmd); |
119 | static void igb_tx_timeout(struct net_device *); | |
120 | static void igb_reset_task(struct work_struct *); | |
121 | static void igb_vlan_rx_register(struct net_device *, struct vlan_group *); | |
122 | static void igb_vlan_rx_add_vid(struct net_device *, u16); | |
123 | static void igb_vlan_rx_kill_vid(struct net_device *, u16); | |
124 | static void igb_restore_vlan(struct igb_adapter *); | |
125 | ||
126 | static int igb_suspend(struct pci_dev *, pm_message_t); | |
127 | #ifdef CONFIG_PM | |
128 | static int igb_resume(struct pci_dev *); | |
129 | #endif | |
130 | static void igb_shutdown(struct pci_dev *); | |
421e02f0 | 131 | #ifdef CONFIG_IGB_DCA |
fe4506b6 JC |
132 | static int igb_notify_dca(struct notifier_block *, unsigned long, void *); |
133 | static struct notifier_block dca_notifier = { | |
134 | .notifier_call = igb_notify_dca, | |
135 | .next = NULL, | |
136 | .priority = 0 | |
137 | }; | |
138 | #endif | |
9d5c8243 AK |
139 | |
140 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
141 | /* for netdump / net console */ | |
142 | static void igb_netpoll(struct net_device *); | |
143 | #endif | |
144 | ||
145 | static pci_ers_result_t igb_io_error_detected(struct pci_dev *, | |
146 | pci_channel_state_t); | |
147 | static pci_ers_result_t igb_io_slot_reset(struct pci_dev *); | |
148 | static void igb_io_resume(struct pci_dev *); | |
149 | ||
150 | static struct pci_error_handlers igb_err_handler = { | |
151 | .error_detected = igb_io_error_detected, | |
152 | .slot_reset = igb_io_slot_reset, | |
153 | .resume = igb_io_resume, | |
154 | }; | |
155 | ||
156 | ||
157 | static struct pci_driver igb_driver = { | |
158 | .name = igb_driver_name, | |
159 | .id_table = igb_pci_tbl, | |
160 | .probe = igb_probe, | |
161 | .remove = __devexit_p(igb_remove), | |
162 | #ifdef CONFIG_PM | |
163 | /* Power Managment Hooks */ | |
164 | .suspend = igb_suspend, | |
165 | .resume = igb_resume, | |
166 | #endif | |
167 | .shutdown = igb_shutdown, | |
168 | .err_handler = &igb_err_handler | |
169 | }; | |
170 | ||
7dfc16fa AD |
171 | static int global_quad_port_a; /* global quad port a indication */ |
172 | ||
9d5c8243 AK |
173 | MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>"); |
174 | MODULE_DESCRIPTION("Intel(R) Gigabit Ethernet Network Driver"); | |
175 | MODULE_LICENSE("GPL"); | |
176 | MODULE_VERSION(DRV_VERSION); | |
177 | ||
178 | #ifdef DEBUG | |
179 | /** | |
180 | * igb_get_hw_dev_name - return device name string | |
181 | * used by hardware layer to print debugging information | |
182 | **/ | |
183 | char *igb_get_hw_dev_name(struct e1000_hw *hw) | |
184 | { | |
185 | struct igb_adapter *adapter = hw->back; | |
186 | return adapter->netdev->name; | |
187 | } | |
188 | #endif | |
189 | ||
190 | /** | |
191 | * igb_init_module - Driver Registration Routine | |
192 | * | |
193 | * igb_init_module is the first routine called when the driver is | |
194 | * loaded. All it does is register with the PCI subsystem. | |
195 | **/ | |
196 | static int __init igb_init_module(void) | |
197 | { | |
198 | int ret; | |
199 | printk(KERN_INFO "%s - version %s\n", | |
200 | igb_driver_string, igb_driver_version); | |
201 | ||
202 | printk(KERN_INFO "%s\n", igb_copyright); | |
203 | ||
7dfc16fa AD |
204 | global_quad_port_a = 0; |
205 | ||
421e02f0 | 206 | #ifdef CONFIG_IGB_DCA |
fe4506b6 JC |
207 | dca_register_notify(&dca_notifier); |
208 | #endif | |
bbd98fe4 AD |
209 | |
210 | ret = pci_register_driver(&igb_driver); | |
9d5c8243 AK |
211 | return ret; |
212 | } | |
213 | ||
214 | module_init(igb_init_module); | |
215 | ||
216 | /** | |
217 | * igb_exit_module - Driver Exit Cleanup Routine | |
218 | * | |
219 | * igb_exit_module is called just before the driver is removed | |
220 | * from memory. | |
221 | **/ | |
222 | static void __exit igb_exit_module(void) | |
223 | { | |
421e02f0 | 224 | #ifdef CONFIG_IGB_DCA |
fe4506b6 JC |
225 | dca_unregister_notify(&dca_notifier); |
226 | #endif | |
9d5c8243 AK |
227 | pci_unregister_driver(&igb_driver); |
228 | } | |
229 | ||
230 | module_exit(igb_exit_module); | |
231 | ||
26bc19ec AD |
232 | #define Q_IDX_82576(i) (((i & 0x1) << 3) + (i >> 1)) |
233 | /** | |
234 | * igb_cache_ring_register - Descriptor ring to register mapping | |
235 | * @adapter: board private structure to initialize | |
236 | * | |
237 | * Once we know the feature-set enabled for the device, we'll cache | |
238 | * the register offset the descriptor ring is assigned to. | |
239 | **/ | |
240 | static void igb_cache_ring_register(struct igb_adapter *adapter) | |
241 | { | |
242 | int i; | |
243 | ||
244 | switch (adapter->hw.mac.type) { | |
245 | case e1000_82576: | |
246 | /* The queues are allocated for virtualization such that VF 0 | |
247 | * is allocated queues 0 and 8, VF 1 queues 1 and 9, etc. | |
248 | * In order to avoid collision we start at the first free queue | |
249 | * and continue consuming queues in the same sequence | |
250 | */ | |
251 | for (i = 0; i < adapter->num_rx_queues; i++) | |
252 | adapter->rx_ring[i].reg_idx = Q_IDX_82576(i); | |
253 | for (i = 0; i < adapter->num_tx_queues; i++) | |
254 | adapter->tx_ring[i].reg_idx = Q_IDX_82576(i); | |
255 | break; | |
256 | case e1000_82575: | |
257 | default: | |
258 | for (i = 0; i < adapter->num_rx_queues; i++) | |
259 | adapter->rx_ring[i].reg_idx = i; | |
260 | for (i = 0; i < adapter->num_tx_queues; i++) | |
261 | adapter->tx_ring[i].reg_idx = i; | |
262 | break; | |
263 | } | |
264 | } | |
265 | ||
9d5c8243 AK |
266 | /** |
267 | * igb_alloc_queues - Allocate memory for all rings | |
268 | * @adapter: board private structure to initialize | |
269 | * | |
270 | * We allocate one ring per queue at run-time since we don't know the | |
271 | * number of queues at compile-time. | |
272 | **/ | |
273 | static int igb_alloc_queues(struct igb_adapter *adapter) | |
274 | { | |
275 | int i; | |
276 | ||
277 | adapter->tx_ring = kcalloc(adapter->num_tx_queues, | |
278 | sizeof(struct igb_ring), GFP_KERNEL); | |
279 | if (!adapter->tx_ring) | |
280 | return -ENOMEM; | |
281 | ||
282 | adapter->rx_ring = kcalloc(adapter->num_rx_queues, | |
283 | sizeof(struct igb_ring), GFP_KERNEL); | |
284 | if (!adapter->rx_ring) { | |
285 | kfree(adapter->tx_ring); | |
286 | return -ENOMEM; | |
287 | } | |
288 | ||
6eb5a7f1 AD |
289 | adapter->rx_ring->buddy = adapter->tx_ring; |
290 | ||
661086df PWJ |
291 | for (i = 0; i < adapter->num_tx_queues; i++) { |
292 | struct igb_ring *ring = &(adapter->tx_ring[i]); | |
68fd9910 | 293 | ring->count = adapter->tx_ring_count; |
661086df PWJ |
294 | ring->adapter = adapter; |
295 | ring->queue_index = i; | |
296 | } | |
9d5c8243 AK |
297 | for (i = 0; i < adapter->num_rx_queues; i++) { |
298 | struct igb_ring *ring = &(adapter->rx_ring[i]); | |
68fd9910 | 299 | ring->count = adapter->rx_ring_count; |
9d5c8243 | 300 | ring->adapter = adapter; |
844290e5 | 301 | ring->queue_index = i; |
9d5c8243 AK |
302 | ring->itr_register = E1000_ITR; |
303 | ||
844290e5 | 304 | /* set a default napi handler for each rx_ring */ |
661086df | 305 | netif_napi_add(adapter->netdev, &ring->napi, igb_poll, 64); |
9d5c8243 | 306 | } |
26bc19ec AD |
307 | |
308 | igb_cache_ring_register(adapter); | |
9d5c8243 AK |
309 | return 0; |
310 | } | |
311 | ||
a88f10ec AD |
312 | static void igb_free_queues(struct igb_adapter *adapter) |
313 | { | |
314 | int i; | |
315 | ||
316 | for (i = 0; i < adapter->num_rx_queues; i++) | |
317 | netif_napi_del(&adapter->rx_ring[i].napi); | |
318 | ||
319 | kfree(adapter->tx_ring); | |
320 | kfree(adapter->rx_ring); | |
321 | } | |
322 | ||
9d5c8243 AK |
323 | #define IGB_N0_QUEUE -1 |
324 | static void igb_assign_vector(struct igb_adapter *adapter, int rx_queue, | |
325 | int tx_queue, int msix_vector) | |
326 | { | |
327 | u32 msixbm = 0; | |
328 | struct e1000_hw *hw = &adapter->hw; | |
2d064c06 AD |
329 | u32 ivar, index; |
330 | ||
331 | switch (hw->mac.type) { | |
332 | case e1000_82575: | |
9d5c8243 AK |
333 | /* The 82575 assigns vectors using a bitmask, which matches the |
334 | bitmask for the EICR/EIMS/EIMC registers. To assign one | |
335 | or more queues to a vector, we write the appropriate bits | |
336 | into the MSIXBM register for that vector. */ | |
337 | if (rx_queue > IGB_N0_QUEUE) { | |
338 | msixbm = E1000_EICR_RX_QUEUE0 << rx_queue; | |
339 | adapter->rx_ring[rx_queue].eims_value = msixbm; | |
340 | } | |
341 | if (tx_queue > IGB_N0_QUEUE) { | |
342 | msixbm |= E1000_EICR_TX_QUEUE0 << tx_queue; | |
343 | adapter->tx_ring[tx_queue].eims_value = | |
344 | E1000_EICR_TX_QUEUE0 << tx_queue; | |
345 | } | |
346 | array_wr32(E1000_MSIXBM(0), msix_vector, msixbm); | |
2d064c06 AD |
347 | break; |
348 | case e1000_82576: | |
26bc19ec | 349 | /* 82576 uses a table-based method for assigning vectors. |
2d064c06 AD |
350 | Each queue has a single entry in the table to which we write |
351 | a vector number along with a "valid" bit. Sadly, the layout | |
352 | of the table is somewhat counterintuitive. */ | |
353 | if (rx_queue > IGB_N0_QUEUE) { | |
26bc19ec | 354 | index = (rx_queue >> 1); |
2d064c06 | 355 | ivar = array_rd32(E1000_IVAR0, index); |
26bc19ec | 356 | if (rx_queue & 0x1) { |
2d064c06 AD |
357 | /* vector goes into third byte of register */ |
358 | ivar = ivar & 0xFF00FFFF; | |
359 | ivar |= (msix_vector | E1000_IVAR_VALID) << 16; | |
26bc19ec AD |
360 | } else { |
361 | /* vector goes into low byte of register */ | |
362 | ivar = ivar & 0xFFFFFF00; | |
363 | ivar |= msix_vector | E1000_IVAR_VALID; | |
2d064c06 AD |
364 | } |
365 | adapter->rx_ring[rx_queue].eims_value= 1 << msix_vector; | |
366 | array_wr32(E1000_IVAR0, index, ivar); | |
367 | } | |
368 | if (tx_queue > IGB_N0_QUEUE) { | |
26bc19ec | 369 | index = (tx_queue >> 1); |
2d064c06 | 370 | ivar = array_rd32(E1000_IVAR0, index); |
26bc19ec | 371 | if (tx_queue & 0x1) { |
2d064c06 AD |
372 | /* vector goes into high byte of register */ |
373 | ivar = ivar & 0x00FFFFFF; | |
374 | ivar |= (msix_vector | E1000_IVAR_VALID) << 24; | |
26bc19ec AD |
375 | } else { |
376 | /* vector goes into second byte of register */ | |
377 | ivar = ivar & 0xFFFF00FF; | |
378 | ivar |= (msix_vector | E1000_IVAR_VALID) << 8; | |
2d064c06 AD |
379 | } |
380 | adapter->tx_ring[tx_queue].eims_value= 1 << msix_vector; | |
381 | array_wr32(E1000_IVAR0, index, ivar); | |
382 | } | |
383 | break; | |
384 | default: | |
385 | BUG(); | |
386 | break; | |
387 | } | |
9d5c8243 AK |
388 | } |
389 | ||
390 | /** | |
391 | * igb_configure_msix - Configure MSI-X hardware | |
392 | * | |
393 | * igb_configure_msix sets up the hardware to properly | |
394 | * generate MSI-X interrupts. | |
395 | **/ | |
396 | static void igb_configure_msix(struct igb_adapter *adapter) | |
397 | { | |
398 | u32 tmp; | |
399 | int i, vector = 0; | |
400 | struct e1000_hw *hw = &adapter->hw; | |
401 | ||
402 | adapter->eims_enable_mask = 0; | |
2d064c06 AD |
403 | if (hw->mac.type == e1000_82576) |
404 | /* Turn on MSI-X capability first, or our settings | |
405 | * won't stick. And it will take days to debug. */ | |
406 | wr32(E1000_GPIE, E1000_GPIE_MSIX_MODE | | |
eebbbdba | 407 | E1000_GPIE_PBA | E1000_GPIE_EIAME | |
2d064c06 | 408 | E1000_GPIE_NSICR); |
9d5c8243 AK |
409 | |
410 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
411 | struct igb_ring *tx_ring = &adapter->tx_ring[i]; | |
412 | igb_assign_vector(adapter, IGB_N0_QUEUE, i, vector++); | |
413 | adapter->eims_enable_mask |= tx_ring->eims_value; | |
414 | if (tx_ring->itr_val) | |
6eb5a7f1 | 415 | writel(tx_ring->itr_val, |
9d5c8243 AK |
416 | hw->hw_addr + tx_ring->itr_register); |
417 | else | |
418 | writel(1, hw->hw_addr + tx_ring->itr_register); | |
419 | } | |
420 | ||
421 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
422 | struct igb_ring *rx_ring = &adapter->rx_ring[i]; | |
25ac3c24 | 423 | rx_ring->buddy = NULL; |
9d5c8243 AK |
424 | igb_assign_vector(adapter, i, IGB_N0_QUEUE, vector++); |
425 | adapter->eims_enable_mask |= rx_ring->eims_value; | |
426 | if (rx_ring->itr_val) | |
6eb5a7f1 | 427 | writel(rx_ring->itr_val, |
9d5c8243 AK |
428 | hw->hw_addr + rx_ring->itr_register); |
429 | else | |
430 | writel(1, hw->hw_addr + rx_ring->itr_register); | |
431 | } | |
432 | ||
433 | ||
434 | /* set vector for other causes, i.e. link changes */ | |
2d064c06 AD |
435 | switch (hw->mac.type) { |
436 | case e1000_82575: | |
9d5c8243 AK |
437 | array_wr32(E1000_MSIXBM(0), vector++, |
438 | E1000_EIMS_OTHER); | |
439 | ||
9d5c8243 AK |
440 | tmp = rd32(E1000_CTRL_EXT); |
441 | /* enable MSI-X PBA support*/ | |
442 | tmp |= E1000_CTRL_EXT_PBA_CLR; | |
443 | ||
444 | /* Auto-Mask interrupts upon ICR read. */ | |
445 | tmp |= E1000_CTRL_EXT_EIAME; | |
446 | tmp |= E1000_CTRL_EXT_IRCA; | |
447 | ||
448 | wr32(E1000_CTRL_EXT, tmp); | |
449 | adapter->eims_enable_mask |= E1000_EIMS_OTHER; | |
844290e5 | 450 | adapter->eims_other = E1000_EIMS_OTHER; |
9d5c8243 | 451 | |
2d064c06 AD |
452 | break; |
453 | ||
454 | case e1000_82576: | |
455 | tmp = (vector++ | E1000_IVAR_VALID) << 8; | |
456 | wr32(E1000_IVAR_MISC, tmp); | |
457 | ||
458 | adapter->eims_enable_mask = (1 << (vector)) - 1; | |
459 | adapter->eims_other = 1 << (vector - 1); | |
460 | break; | |
461 | default: | |
462 | /* do nothing, since nothing else supports MSI-X */ | |
463 | break; | |
464 | } /* switch (hw->mac.type) */ | |
9d5c8243 AK |
465 | wrfl(); |
466 | } | |
467 | ||
468 | /** | |
469 | * igb_request_msix - Initialize MSI-X interrupts | |
470 | * | |
471 | * igb_request_msix allocates MSI-X vectors and requests interrupts from the | |
472 | * kernel. | |
473 | **/ | |
474 | static int igb_request_msix(struct igb_adapter *adapter) | |
475 | { | |
476 | struct net_device *netdev = adapter->netdev; | |
477 | int i, err = 0, vector = 0; | |
478 | ||
479 | vector = 0; | |
480 | ||
481 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
482 | struct igb_ring *ring = &(adapter->tx_ring[i]); | |
cb7b48f6 | 483 | sprintf(ring->name, "%s-tx-%d", netdev->name, i); |
9d5c8243 AK |
484 | err = request_irq(adapter->msix_entries[vector].vector, |
485 | &igb_msix_tx, 0, ring->name, | |
486 | &(adapter->tx_ring[i])); | |
487 | if (err) | |
488 | goto out; | |
489 | ring->itr_register = E1000_EITR(0) + (vector << 2); | |
6eb5a7f1 | 490 | ring->itr_val = 976; /* ~4000 ints/sec */ |
9d5c8243 AK |
491 | vector++; |
492 | } | |
493 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
494 | struct igb_ring *ring = &(adapter->rx_ring[i]); | |
495 | if (strlen(netdev->name) < (IFNAMSIZ - 5)) | |
cb7b48f6 | 496 | sprintf(ring->name, "%s-rx-%d", netdev->name, i); |
9d5c8243 AK |
497 | else |
498 | memcpy(ring->name, netdev->name, IFNAMSIZ); | |
499 | err = request_irq(adapter->msix_entries[vector].vector, | |
500 | &igb_msix_rx, 0, ring->name, | |
501 | &(adapter->rx_ring[i])); | |
502 | if (err) | |
503 | goto out; | |
504 | ring->itr_register = E1000_EITR(0) + (vector << 2); | |
505 | ring->itr_val = adapter->itr; | |
844290e5 PW |
506 | /* overwrite the poll routine for MSIX, we've already done |
507 | * netif_napi_add */ | |
508 | ring->napi.poll = &igb_clean_rx_ring_msix; | |
9d5c8243 AK |
509 | vector++; |
510 | } | |
511 | ||
512 | err = request_irq(adapter->msix_entries[vector].vector, | |
513 | &igb_msix_other, 0, netdev->name, netdev); | |
514 | if (err) | |
515 | goto out; | |
516 | ||
9d5c8243 AK |
517 | igb_configure_msix(adapter); |
518 | return 0; | |
519 | out: | |
520 | return err; | |
521 | } | |
522 | ||
523 | static void igb_reset_interrupt_capability(struct igb_adapter *adapter) | |
524 | { | |
525 | if (adapter->msix_entries) { | |
526 | pci_disable_msix(adapter->pdev); | |
527 | kfree(adapter->msix_entries); | |
528 | adapter->msix_entries = NULL; | |
7dfc16fa | 529 | } else if (adapter->flags & IGB_FLAG_HAS_MSI) |
9d5c8243 AK |
530 | pci_disable_msi(adapter->pdev); |
531 | return; | |
532 | } | |
533 | ||
534 | ||
535 | /** | |
536 | * igb_set_interrupt_capability - set MSI or MSI-X if supported | |
537 | * | |
538 | * Attempt to configure interrupts using the best available | |
539 | * capabilities of the hardware and kernel. | |
540 | **/ | |
541 | static void igb_set_interrupt_capability(struct igb_adapter *adapter) | |
542 | { | |
543 | int err; | |
544 | int numvecs, i; | |
545 | ||
83b7180d AD |
546 | /* Number of supported queues. */ |
547 | /* Having more queues than CPUs doesn't make sense. */ | |
548 | adapter->num_rx_queues = min_t(u32, IGB_MAX_RX_QUEUES, num_online_cpus()); | |
549 | adapter->num_tx_queues = min_t(u32, IGB_MAX_TX_QUEUES, num_online_cpus()); | |
550 | ||
9d5c8243 AK |
551 | numvecs = adapter->num_tx_queues + adapter->num_rx_queues + 1; |
552 | adapter->msix_entries = kcalloc(numvecs, sizeof(struct msix_entry), | |
553 | GFP_KERNEL); | |
554 | if (!adapter->msix_entries) | |
555 | goto msi_only; | |
556 | ||
557 | for (i = 0; i < numvecs; i++) | |
558 | adapter->msix_entries[i].entry = i; | |
559 | ||
560 | err = pci_enable_msix(adapter->pdev, | |
561 | adapter->msix_entries, | |
562 | numvecs); | |
563 | if (err == 0) | |
34a20e89 | 564 | goto out; |
9d5c8243 AK |
565 | |
566 | igb_reset_interrupt_capability(adapter); | |
567 | ||
568 | /* If we can't do MSI-X, try MSI */ | |
569 | msi_only: | |
570 | adapter->num_rx_queues = 1; | |
661086df | 571 | adapter->num_tx_queues = 1; |
9d5c8243 | 572 | if (!pci_enable_msi(adapter->pdev)) |
7dfc16fa | 573 | adapter->flags |= IGB_FLAG_HAS_MSI; |
34a20e89 | 574 | out: |
661086df | 575 | /* Notify the stack of the (possibly) reduced Tx Queue count. */ |
fd2ea0a7 | 576 | adapter->netdev->real_num_tx_queues = adapter->num_tx_queues; |
9d5c8243 AK |
577 | return; |
578 | } | |
579 | ||
580 | /** | |
581 | * igb_request_irq - initialize interrupts | |
582 | * | |
583 | * Attempts to configure interrupts using the best available | |
584 | * capabilities of the hardware and kernel. | |
585 | **/ | |
586 | static int igb_request_irq(struct igb_adapter *adapter) | |
587 | { | |
588 | struct net_device *netdev = adapter->netdev; | |
589 | struct e1000_hw *hw = &adapter->hw; | |
590 | int err = 0; | |
591 | ||
592 | if (adapter->msix_entries) { | |
593 | err = igb_request_msix(adapter); | |
844290e5 | 594 | if (!err) |
9d5c8243 | 595 | goto request_done; |
9d5c8243 AK |
596 | /* fall back to MSI */ |
597 | igb_reset_interrupt_capability(adapter); | |
598 | if (!pci_enable_msi(adapter->pdev)) | |
7dfc16fa | 599 | adapter->flags |= IGB_FLAG_HAS_MSI; |
9d5c8243 AK |
600 | igb_free_all_tx_resources(adapter); |
601 | igb_free_all_rx_resources(adapter); | |
602 | adapter->num_rx_queues = 1; | |
603 | igb_alloc_queues(adapter); | |
844290e5 | 604 | } else { |
2d064c06 AD |
605 | switch (hw->mac.type) { |
606 | case e1000_82575: | |
607 | wr32(E1000_MSIXBM(0), | |
608 | (E1000_EICR_RX_QUEUE0 | E1000_EIMS_OTHER)); | |
609 | break; | |
610 | case e1000_82576: | |
611 | wr32(E1000_IVAR0, E1000_IVAR_VALID); | |
612 | break; | |
613 | default: | |
614 | break; | |
615 | } | |
9d5c8243 | 616 | } |
844290e5 | 617 | |
7dfc16fa | 618 | if (adapter->flags & IGB_FLAG_HAS_MSI) { |
9d5c8243 AK |
619 | err = request_irq(adapter->pdev->irq, &igb_intr_msi, 0, |
620 | netdev->name, netdev); | |
621 | if (!err) | |
622 | goto request_done; | |
623 | /* fall back to legacy interrupts */ | |
624 | igb_reset_interrupt_capability(adapter); | |
7dfc16fa | 625 | adapter->flags &= ~IGB_FLAG_HAS_MSI; |
9d5c8243 AK |
626 | } |
627 | ||
628 | err = request_irq(adapter->pdev->irq, &igb_intr, IRQF_SHARED, | |
629 | netdev->name, netdev); | |
630 | ||
6cb5e577 | 631 | if (err) |
9d5c8243 AK |
632 | dev_err(&adapter->pdev->dev, "Error %d getting interrupt\n", |
633 | err); | |
9d5c8243 AK |
634 | |
635 | request_done: | |
636 | return err; | |
637 | } | |
638 | ||
639 | static void igb_free_irq(struct igb_adapter *adapter) | |
640 | { | |
641 | struct net_device *netdev = adapter->netdev; | |
642 | ||
643 | if (adapter->msix_entries) { | |
644 | int vector = 0, i; | |
645 | ||
646 | for (i = 0; i < adapter->num_tx_queues; i++) | |
647 | free_irq(adapter->msix_entries[vector++].vector, | |
648 | &(adapter->tx_ring[i])); | |
649 | for (i = 0; i < adapter->num_rx_queues; i++) | |
650 | free_irq(adapter->msix_entries[vector++].vector, | |
651 | &(adapter->rx_ring[i])); | |
652 | ||
653 | free_irq(adapter->msix_entries[vector++].vector, netdev); | |
654 | return; | |
655 | } | |
656 | ||
657 | free_irq(adapter->pdev->irq, netdev); | |
658 | } | |
659 | ||
660 | /** | |
661 | * igb_irq_disable - Mask off interrupt generation on the NIC | |
662 | * @adapter: board private structure | |
663 | **/ | |
664 | static void igb_irq_disable(struct igb_adapter *adapter) | |
665 | { | |
666 | struct e1000_hw *hw = &adapter->hw; | |
667 | ||
668 | if (adapter->msix_entries) { | |
844290e5 | 669 | wr32(E1000_EIAM, 0); |
9d5c8243 AK |
670 | wr32(E1000_EIMC, ~0); |
671 | wr32(E1000_EIAC, 0); | |
672 | } | |
844290e5 PW |
673 | |
674 | wr32(E1000_IAM, 0); | |
9d5c8243 AK |
675 | wr32(E1000_IMC, ~0); |
676 | wrfl(); | |
677 | synchronize_irq(adapter->pdev->irq); | |
678 | } | |
679 | ||
680 | /** | |
681 | * igb_irq_enable - Enable default interrupt generation settings | |
682 | * @adapter: board private structure | |
683 | **/ | |
684 | static void igb_irq_enable(struct igb_adapter *adapter) | |
685 | { | |
686 | struct e1000_hw *hw = &adapter->hw; | |
687 | ||
688 | if (adapter->msix_entries) { | |
844290e5 PW |
689 | wr32(E1000_EIAC, adapter->eims_enable_mask); |
690 | wr32(E1000_EIAM, adapter->eims_enable_mask); | |
691 | wr32(E1000_EIMS, adapter->eims_enable_mask); | |
dda0e083 | 692 | wr32(E1000_IMS, E1000_IMS_LSC | E1000_IMS_DOUTSYNC); |
844290e5 PW |
693 | } else { |
694 | wr32(E1000_IMS, IMS_ENABLE_MASK); | |
695 | wr32(E1000_IAM, IMS_ENABLE_MASK); | |
696 | } | |
9d5c8243 AK |
697 | } |
698 | ||
699 | static void igb_update_mng_vlan(struct igb_adapter *adapter) | |
700 | { | |
701 | struct net_device *netdev = adapter->netdev; | |
702 | u16 vid = adapter->hw.mng_cookie.vlan_id; | |
703 | u16 old_vid = adapter->mng_vlan_id; | |
704 | if (adapter->vlgrp) { | |
705 | if (!vlan_group_get_device(adapter->vlgrp, vid)) { | |
706 | if (adapter->hw.mng_cookie.status & | |
707 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN) { | |
708 | igb_vlan_rx_add_vid(netdev, vid); | |
709 | adapter->mng_vlan_id = vid; | |
710 | } else | |
711 | adapter->mng_vlan_id = IGB_MNG_VLAN_NONE; | |
712 | ||
713 | if ((old_vid != (u16)IGB_MNG_VLAN_NONE) && | |
714 | (vid != old_vid) && | |
715 | !vlan_group_get_device(adapter->vlgrp, old_vid)) | |
716 | igb_vlan_rx_kill_vid(netdev, old_vid); | |
717 | } else | |
718 | adapter->mng_vlan_id = vid; | |
719 | } | |
720 | } | |
721 | ||
722 | /** | |
723 | * igb_release_hw_control - release control of the h/w to f/w | |
724 | * @adapter: address of board private structure | |
725 | * | |
726 | * igb_release_hw_control resets CTRL_EXT:DRV_LOAD bit. | |
727 | * For ASF and Pass Through versions of f/w this means that the | |
728 | * driver is no longer loaded. | |
729 | * | |
730 | **/ | |
731 | static void igb_release_hw_control(struct igb_adapter *adapter) | |
732 | { | |
733 | struct e1000_hw *hw = &adapter->hw; | |
734 | u32 ctrl_ext; | |
735 | ||
736 | /* Let firmware take over control of h/w */ | |
737 | ctrl_ext = rd32(E1000_CTRL_EXT); | |
738 | wr32(E1000_CTRL_EXT, | |
739 | ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD); | |
740 | } | |
741 | ||
742 | ||
743 | /** | |
744 | * igb_get_hw_control - get control of the h/w from f/w | |
745 | * @adapter: address of board private structure | |
746 | * | |
747 | * igb_get_hw_control sets CTRL_EXT:DRV_LOAD bit. | |
748 | * For ASF and Pass Through versions of f/w this means that | |
749 | * the driver is loaded. | |
750 | * | |
751 | **/ | |
752 | static void igb_get_hw_control(struct igb_adapter *adapter) | |
753 | { | |
754 | struct e1000_hw *hw = &adapter->hw; | |
755 | u32 ctrl_ext; | |
756 | ||
757 | /* Let firmware know the driver has taken over */ | |
758 | ctrl_ext = rd32(E1000_CTRL_EXT); | |
759 | wr32(E1000_CTRL_EXT, | |
760 | ctrl_ext | E1000_CTRL_EXT_DRV_LOAD); | |
761 | } | |
762 | ||
9d5c8243 AK |
763 | /** |
764 | * igb_configure - configure the hardware for RX and TX | |
765 | * @adapter: private board structure | |
766 | **/ | |
767 | static void igb_configure(struct igb_adapter *adapter) | |
768 | { | |
769 | struct net_device *netdev = adapter->netdev; | |
770 | int i; | |
771 | ||
772 | igb_get_hw_control(adapter); | |
773 | igb_set_multi(netdev); | |
774 | ||
775 | igb_restore_vlan(adapter); | |
9d5c8243 AK |
776 | |
777 | igb_configure_tx(adapter); | |
778 | igb_setup_rctl(adapter); | |
779 | igb_configure_rx(adapter); | |
662d7205 AD |
780 | |
781 | igb_rx_fifo_flush_82575(&adapter->hw); | |
782 | ||
9d5c8243 AK |
783 | /* call IGB_DESC_UNUSED which always leaves |
784 | * at least 1 descriptor unused to make sure | |
785 | * next_to_use != next_to_clean */ | |
786 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
787 | struct igb_ring *ring = &adapter->rx_ring[i]; | |
3b644cf6 | 788 | igb_alloc_rx_buffers_adv(ring, IGB_DESC_UNUSED(ring)); |
9d5c8243 AK |
789 | } |
790 | ||
791 | ||
792 | adapter->tx_queue_len = netdev->tx_queue_len; | |
793 | } | |
794 | ||
795 | ||
796 | /** | |
797 | * igb_up - Open the interface and prepare it to handle traffic | |
798 | * @adapter: board private structure | |
799 | **/ | |
800 | ||
801 | int igb_up(struct igb_adapter *adapter) | |
802 | { | |
803 | struct e1000_hw *hw = &adapter->hw; | |
804 | int i; | |
805 | ||
806 | /* hardware has been reset, we need to reload some things */ | |
807 | igb_configure(adapter); | |
808 | ||
809 | clear_bit(__IGB_DOWN, &adapter->state); | |
810 | ||
844290e5 PW |
811 | for (i = 0; i < adapter->num_rx_queues; i++) |
812 | napi_enable(&adapter->rx_ring[i].napi); | |
813 | if (adapter->msix_entries) | |
9d5c8243 | 814 | igb_configure_msix(adapter); |
9d5c8243 AK |
815 | |
816 | /* Clear any pending interrupts. */ | |
817 | rd32(E1000_ICR); | |
818 | igb_irq_enable(adapter); | |
819 | ||
820 | /* Fire a link change interrupt to start the watchdog. */ | |
821 | wr32(E1000_ICS, E1000_ICS_LSC); | |
822 | return 0; | |
823 | } | |
824 | ||
825 | void igb_down(struct igb_adapter *adapter) | |
826 | { | |
827 | struct e1000_hw *hw = &adapter->hw; | |
828 | struct net_device *netdev = adapter->netdev; | |
829 | u32 tctl, rctl; | |
830 | int i; | |
831 | ||
832 | /* signal that we're down so the interrupt handler does not | |
833 | * reschedule our watchdog timer */ | |
834 | set_bit(__IGB_DOWN, &adapter->state); | |
835 | ||
836 | /* disable receives in the hardware */ | |
837 | rctl = rd32(E1000_RCTL); | |
838 | wr32(E1000_RCTL, rctl & ~E1000_RCTL_EN); | |
839 | /* flush and sleep below */ | |
840 | ||
fd2ea0a7 | 841 | netif_tx_stop_all_queues(netdev); |
9d5c8243 AK |
842 | |
843 | /* disable transmits in the hardware */ | |
844 | tctl = rd32(E1000_TCTL); | |
845 | tctl &= ~E1000_TCTL_EN; | |
846 | wr32(E1000_TCTL, tctl); | |
847 | /* flush both disables and wait for them to finish */ | |
848 | wrfl(); | |
849 | msleep(10); | |
850 | ||
844290e5 PW |
851 | for (i = 0; i < adapter->num_rx_queues; i++) |
852 | napi_disable(&adapter->rx_ring[i].napi); | |
9d5c8243 | 853 | |
9d5c8243 AK |
854 | igb_irq_disable(adapter); |
855 | ||
856 | del_timer_sync(&adapter->watchdog_timer); | |
857 | del_timer_sync(&adapter->phy_info_timer); | |
858 | ||
859 | netdev->tx_queue_len = adapter->tx_queue_len; | |
860 | netif_carrier_off(netdev); | |
04fe6358 AD |
861 | |
862 | /* record the stats before reset*/ | |
863 | igb_update_stats(adapter); | |
864 | ||
9d5c8243 AK |
865 | adapter->link_speed = 0; |
866 | adapter->link_duplex = 0; | |
867 | ||
3023682e JK |
868 | if (!pci_channel_offline(adapter->pdev)) |
869 | igb_reset(adapter); | |
9d5c8243 AK |
870 | igb_clean_all_tx_rings(adapter); |
871 | igb_clean_all_rx_rings(adapter); | |
872 | } | |
873 | ||
874 | void igb_reinit_locked(struct igb_adapter *adapter) | |
875 | { | |
876 | WARN_ON(in_interrupt()); | |
877 | while (test_and_set_bit(__IGB_RESETTING, &adapter->state)) | |
878 | msleep(1); | |
879 | igb_down(adapter); | |
880 | igb_up(adapter); | |
881 | clear_bit(__IGB_RESETTING, &adapter->state); | |
882 | } | |
883 | ||
884 | void igb_reset(struct igb_adapter *adapter) | |
885 | { | |
886 | struct e1000_hw *hw = &adapter->hw; | |
2d064c06 AD |
887 | struct e1000_mac_info *mac = &hw->mac; |
888 | struct e1000_fc_info *fc = &hw->fc; | |
9d5c8243 AK |
889 | u32 pba = 0, tx_space, min_tx_space, min_rx_space; |
890 | u16 hwm; | |
891 | ||
892 | /* Repartition Pba for greater than 9k mtu | |
893 | * To take effect CTRL.RST is required. | |
894 | */ | |
fa4dfae0 AD |
895 | switch (mac->type) { |
896 | case e1000_82576: | |
2d064c06 | 897 | pba = E1000_PBA_64K; |
fa4dfae0 AD |
898 | break; |
899 | case e1000_82575: | |
900 | default: | |
901 | pba = E1000_PBA_34K; | |
902 | break; | |
2d064c06 | 903 | } |
9d5c8243 | 904 | |
2d064c06 AD |
905 | if ((adapter->max_frame_size > ETH_FRAME_LEN + ETH_FCS_LEN) && |
906 | (mac->type < e1000_82576)) { | |
9d5c8243 AK |
907 | /* adjust PBA for jumbo frames */ |
908 | wr32(E1000_PBA, pba); | |
909 | ||
910 | /* To maintain wire speed transmits, the Tx FIFO should be | |
911 | * large enough to accommodate two full transmit packets, | |
912 | * rounded up to the next 1KB and expressed in KB. Likewise, | |
913 | * the Rx FIFO should be large enough to accommodate at least | |
914 | * one full receive packet and is similarly rounded up and | |
915 | * expressed in KB. */ | |
916 | pba = rd32(E1000_PBA); | |
917 | /* upper 16 bits has Tx packet buffer allocation size in KB */ | |
918 | tx_space = pba >> 16; | |
919 | /* lower 16 bits has Rx packet buffer allocation size in KB */ | |
920 | pba &= 0xffff; | |
921 | /* the tx fifo also stores 16 bytes of information about the tx | |
922 | * but don't include ethernet FCS because hardware appends it */ | |
923 | min_tx_space = (adapter->max_frame_size + | |
924 | sizeof(struct e1000_tx_desc) - | |
925 | ETH_FCS_LEN) * 2; | |
926 | min_tx_space = ALIGN(min_tx_space, 1024); | |
927 | min_tx_space >>= 10; | |
928 | /* software strips receive CRC, so leave room for it */ | |
929 | min_rx_space = adapter->max_frame_size; | |
930 | min_rx_space = ALIGN(min_rx_space, 1024); | |
931 | min_rx_space >>= 10; | |
932 | ||
933 | /* If current Tx allocation is less than the min Tx FIFO size, | |
934 | * and the min Tx FIFO size is less than the current Rx FIFO | |
935 | * allocation, take space away from current Rx allocation */ | |
936 | if (tx_space < min_tx_space && | |
937 | ((min_tx_space - tx_space) < pba)) { | |
938 | pba = pba - (min_tx_space - tx_space); | |
939 | ||
940 | /* if short on rx space, rx wins and must trump tx | |
941 | * adjustment */ | |
942 | if (pba < min_rx_space) | |
943 | pba = min_rx_space; | |
944 | } | |
2d064c06 | 945 | wr32(E1000_PBA, pba); |
9d5c8243 | 946 | } |
9d5c8243 AK |
947 | |
948 | /* flow control settings */ | |
949 | /* The high water mark must be low enough to fit one full frame | |
950 | * (or the size used for early receive) above it in the Rx FIFO. | |
951 | * Set it to the lower of: | |
952 | * - 90% of the Rx FIFO size, or | |
953 | * - the full Rx FIFO size minus one full frame */ | |
954 | hwm = min(((pba << 10) * 9 / 10), | |
2d064c06 | 955 | ((pba << 10) - 2 * adapter->max_frame_size)); |
9d5c8243 | 956 | |
2d064c06 AD |
957 | if (mac->type < e1000_82576) { |
958 | fc->high_water = hwm & 0xFFF8; /* 8-byte granularity */ | |
959 | fc->low_water = fc->high_water - 8; | |
960 | } else { | |
961 | fc->high_water = hwm & 0xFFF0; /* 16-byte granularity */ | |
962 | fc->low_water = fc->high_water - 16; | |
963 | } | |
9d5c8243 AK |
964 | fc->pause_time = 0xFFFF; |
965 | fc->send_xon = 1; | |
966 | fc->type = fc->original_type; | |
967 | ||
968 | /* Allow time for pending master requests to run */ | |
969 | adapter->hw.mac.ops.reset_hw(&adapter->hw); | |
970 | wr32(E1000_WUC, 0); | |
971 | ||
972 | if (adapter->hw.mac.ops.init_hw(&adapter->hw)) | |
973 | dev_err(&adapter->pdev->dev, "Hardware Error\n"); | |
974 | ||
975 | igb_update_mng_vlan(adapter); | |
976 | ||
977 | /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */ | |
978 | wr32(E1000_VET, ETHERNET_IEEE_VLAN_TYPE); | |
979 | ||
980 | igb_reset_adaptive(&adapter->hw); | |
f5f4cf08 | 981 | igb_get_phy_info(&adapter->hw); |
9d5c8243 AK |
982 | } |
983 | ||
2e5c6922 SH |
984 | static const struct net_device_ops igb_netdev_ops = { |
985 | .ndo_open = igb_open, | |
986 | .ndo_stop = igb_close, | |
00829823 | 987 | .ndo_start_xmit = igb_xmit_frame_adv, |
2e5c6922 SH |
988 | .ndo_get_stats = igb_get_stats, |
989 | .ndo_set_multicast_list = igb_set_multi, | |
990 | .ndo_set_mac_address = igb_set_mac, | |
991 | .ndo_change_mtu = igb_change_mtu, | |
992 | .ndo_do_ioctl = igb_ioctl, | |
993 | .ndo_tx_timeout = igb_tx_timeout, | |
994 | .ndo_validate_addr = eth_validate_addr, | |
995 | .ndo_vlan_rx_register = igb_vlan_rx_register, | |
996 | .ndo_vlan_rx_add_vid = igb_vlan_rx_add_vid, | |
997 | .ndo_vlan_rx_kill_vid = igb_vlan_rx_kill_vid, | |
998 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
999 | .ndo_poll_controller = igb_netpoll, | |
1000 | #endif | |
1001 | }; | |
1002 | ||
9d5c8243 AK |
1003 | /** |
1004 | * igb_probe - Device Initialization Routine | |
1005 | * @pdev: PCI device information struct | |
1006 | * @ent: entry in igb_pci_tbl | |
1007 | * | |
1008 | * Returns 0 on success, negative on failure | |
1009 | * | |
1010 | * igb_probe initializes an adapter identified by a pci_dev structure. | |
1011 | * The OS initialization, configuring of the adapter private structure, | |
1012 | * and a hardware reset occur. | |
1013 | **/ | |
1014 | static int __devinit igb_probe(struct pci_dev *pdev, | |
1015 | const struct pci_device_id *ent) | |
1016 | { | |
1017 | struct net_device *netdev; | |
1018 | struct igb_adapter *adapter; | |
1019 | struct e1000_hw *hw; | |
c54106bb | 1020 | struct pci_dev *us_dev; |
9d5c8243 AK |
1021 | const struct e1000_info *ei = igb_info_tbl[ent->driver_data]; |
1022 | unsigned long mmio_start, mmio_len; | |
450c87c8 | 1023 | int err, pci_using_dac, pos; |
c54106bb | 1024 | u16 eeprom_data = 0, state = 0; |
9d5c8243 AK |
1025 | u16 eeprom_apme_mask = IGB_EEPROM_APME; |
1026 | u32 part_num; | |
1027 | ||
aed5dec3 | 1028 | err = pci_enable_device_mem(pdev); |
9d5c8243 AK |
1029 | if (err) |
1030 | return err; | |
1031 | ||
1032 | pci_using_dac = 0; | |
1033 | err = pci_set_dma_mask(pdev, DMA_64BIT_MASK); | |
1034 | if (!err) { | |
1035 | err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK); | |
1036 | if (!err) | |
1037 | pci_using_dac = 1; | |
1038 | } else { | |
1039 | err = pci_set_dma_mask(pdev, DMA_32BIT_MASK); | |
1040 | if (err) { | |
1041 | err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK); | |
1042 | if (err) { | |
1043 | dev_err(&pdev->dev, "No usable DMA " | |
1044 | "configuration, aborting\n"); | |
1045 | goto err_dma; | |
1046 | } | |
1047 | } | |
1048 | } | |
1049 | ||
c54106bb AD |
1050 | /* 82575 requires that the pci-e link partner disable the L0s state */ |
1051 | switch (pdev->device) { | |
1052 | case E1000_DEV_ID_82575EB_COPPER: | |
1053 | case E1000_DEV_ID_82575EB_FIBER_SERDES: | |
1054 | case E1000_DEV_ID_82575GB_QUAD_COPPER: | |
1055 | us_dev = pdev->bus->self; | |
1056 | pos = pci_find_capability(us_dev, PCI_CAP_ID_EXP); | |
1057 | if (pos) { | |
1058 | pci_read_config_word(us_dev, pos + PCI_EXP_LNKCTL, | |
1059 | &state); | |
1060 | state &= ~PCIE_LINK_STATE_L0S; | |
1061 | pci_write_config_word(us_dev, pos + PCI_EXP_LNKCTL, | |
1062 | state); | |
ac450208 BH |
1063 | dev_info(&pdev->dev, |
1064 | "Disabling ASPM L0s upstream switch port %s\n", | |
1065 | pci_name(us_dev)); | |
c54106bb AD |
1066 | } |
1067 | default: | |
1068 | break; | |
1069 | } | |
1070 | ||
aed5dec3 AD |
1071 | err = pci_request_selected_regions(pdev, pci_select_bars(pdev, |
1072 | IORESOURCE_MEM), | |
1073 | igb_driver_name); | |
9d5c8243 AK |
1074 | if (err) |
1075 | goto err_pci_reg; | |
1076 | ||
ea943d41 JK |
1077 | err = pci_enable_pcie_error_reporting(pdev); |
1078 | if (err) { | |
1079 | dev_err(&pdev->dev, "pci_enable_pcie_error_reporting failed " | |
1080 | "0x%x\n", err); | |
1081 | /* non-fatal, continue */ | |
1082 | } | |
40a914fa | 1083 | |
9d5c8243 | 1084 | pci_set_master(pdev); |
c682fc23 | 1085 | pci_save_state(pdev); |
9d5c8243 AK |
1086 | |
1087 | err = -ENOMEM; | |
661086df | 1088 | netdev = alloc_etherdev_mq(sizeof(struct igb_adapter), IGB_MAX_TX_QUEUES); |
9d5c8243 AK |
1089 | if (!netdev) |
1090 | goto err_alloc_etherdev; | |
1091 | ||
1092 | SET_NETDEV_DEV(netdev, &pdev->dev); | |
1093 | ||
1094 | pci_set_drvdata(pdev, netdev); | |
1095 | adapter = netdev_priv(netdev); | |
1096 | adapter->netdev = netdev; | |
1097 | adapter->pdev = pdev; | |
1098 | hw = &adapter->hw; | |
1099 | hw->back = adapter; | |
1100 | adapter->msg_enable = NETIF_MSG_DRV | NETIF_MSG_PROBE; | |
1101 | ||
1102 | mmio_start = pci_resource_start(pdev, 0); | |
1103 | mmio_len = pci_resource_len(pdev, 0); | |
1104 | ||
1105 | err = -EIO; | |
28b0759c AD |
1106 | hw->hw_addr = ioremap(mmio_start, mmio_len); |
1107 | if (!hw->hw_addr) | |
9d5c8243 AK |
1108 | goto err_ioremap; |
1109 | ||
2e5c6922 | 1110 | netdev->netdev_ops = &igb_netdev_ops; |
9d5c8243 | 1111 | igb_set_ethtool_ops(netdev); |
9d5c8243 | 1112 | netdev->watchdog_timeo = 5 * HZ; |
9d5c8243 AK |
1113 | |
1114 | strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1); | |
1115 | ||
1116 | netdev->mem_start = mmio_start; | |
1117 | netdev->mem_end = mmio_start + mmio_len; | |
1118 | ||
9d5c8243 AK |
1119 | /* PCI config space info */ |
1120 | hw->vendor_id = pdev->vendor; | |
1121 | hw->device_id = pdev->device; | |
1122 | hw->revision_id = pdev->revision; | |
1123 | hw->subsystem_vendor_id = pdev->subsystem_vendor; | |
1124 | hw->subsystem_device_id = pdev->subsystem_device; | |
1125 | ||
1126 | /* setup the private structure */ | |
1127 | hw->back = adapter; | |
1128 | /* Copy the default MAC, PHY and NVM function pointers */ | |
1129 | memcpy(&hw->mac.ops, ei->mac_ops, sizeof(hw->mac.ops)); | |
1130 | memcpy(&hw->phy.ops, ei->phy_ops, sizeof(hw->phy.ops)); | |
1131 | memcpy(&hw->nvm.ops, ei->nvm_ops, sizeof(hw->nvm.ops)); | |
1132 | /* Initialize skew-specific constants */ | |
1133 | err = ei->get_invariants(hw); | |
1134 | if (err) | |
450c87c8 | 1135 | goto err_sw_init; |
9d5c8243 | 1136 | |
450c87c8 | 1137 | /* setup the private structure */ |
9d5c8243 AK |
1138 | err = igb_sw_init(adapter); |
1139 | if (err) | |
1140 | goto err_sw_init; | |
1141 | ||
1142 | igb_get_bus_info_pcie(hw); | |
1143 | ||
7dfc16fa AD |
1144 | /* set flags */ |
1145 | switch (hw->mac.type) { | |
7dfc16fa | 1146 | case e1000_82575: |
7dfc16fa AD |
1147 | adapter->flags |= IGB_FLAG_NEED_CTX_IDX; |
1148 | break; | |
bbd98fe4 | 1149 | case e1000_82576: |
7dfc16fa AD |
1150 | default: |
1151 | break; | |
1152 | } | |
1153 | ||
9d5c8243 AK |
1154 | hw->phy.autoneg_wait_to_complete = false; |
1155 | hw->mac.adaptive_ifs = true; | |
1156 | ||
1157 | /* Copper options */ | |
1158 | if (hw->phy.media_type == e1000_media_type_copper) { | |
1159 | hw->phy.mdix = AUTO_ALL_MODES; | |
1160 | hw->phy.disable_polarity_correction = false; | |
1161 | hw->phy.ms_type = e1000_ms_hw_default; | |
1162 | } | |
1163 | ||
1164 | if (igb_check_reset_block(hw)) | |
1165 | dev_info(&pdev->dev, | |
1166 | "PHY reset is blocked due to SOL/IDER session.\n"); | |
1167 | ||
1168 | netdev->features = NETIF_F_SG | | |
7d8eb29e | 1169 | NETIF_F_IP_CSUM | |
9d5c8243 AK |
1170 | NETIF_F_HW_VLAN_TX | |
1171 | NETIF_F_HW_VLAN_RX | | |
1172 | NETIF_F_HW_VLAN_FILTER; | |
1173 | ||
7d8eb29e | 1174 | netdev->features |= NETIF_F_IPV6_CSUM; |
9d5c8243 | 1175 | netdev->features |= NETIF_F_TSO; |
9d5c8243 | 1176 | netdev->features |= NETIF_F_TSO6; |
48f29ffc | 1177 | |
d3352520 | 1178 | #ifdef CONFIG_IGB_LRO |
5c0999b7 | 1179 | netdev->features |= NETIF_F_GRO; |
d3352520 AD |
1180 | #endif |
1181 | ||
48f29ffc JK |
1182 | netdev->vlan_features |= NETIF_F_TSO; |
1183 | netdev->vlan_features |= NETIF_F_TSO6; | |
7d8eb29e | 1184 | netdev->vlan_features |= NETIF_F_IP_CSUM; |
48f29ffc JK |
1185 | netdev->vlan_features |= NETIF_F_SG; |
1186 | ||
9d5c8243 AK |
1187 | if (pci_using_dac) |
1188 | netdev->features |= NETIF_F_HIGHDMA; | |
1189 | ||
9d5c8243 AK |
1190 | adapter->en_mng_pt = igb_enable_mng_pass_thru(&adapter->hw); |
1191 | ||
1192 | /* before reading the NVM, reset the controller to put the device in a | |
1193 | * known good starting state */ | |
1194 | hw->mac.ops.reset_hw(hw); | |
1195 | ||
1196 | /* make sure the NVM is good */ | |
1197 | if (igb_validate_nvm_checksum(hw) < 0) { | |
1198 | dev_err(&pdev->dev, "The NVM Checksum Is Not Valid\n"); | |
1199 | err = -EIO; | |
1200 | goto err_eeprom; | |
1201 | } | |
1202 | ||
1203 | /* copy the MAC address out of the NVM */ | |
1204 | if (hw->mac.ops.read_mac_addr(hw)) | |
1205 | dev_err(&pdev->dev, "NVM Read Error\n"); | |
1206 | ||
1207 | memcpy(netdev->dev_addr, hw->mac.addr, netdev->addr_len); | |
1208 | memcpy(netdev->perm_addr, hw->mac.addr, netdev->addr_len); | |
1209 | ||
1210 | if (!is_valid_ether_addr(netdev->perm_addr)) { | |
1211 | dev_err(&pdev->dev, "Invalid MAC Address\n"); | |
1212 | err = -EIO; | |
1213 | goto err_eeprom; | |
1214 | } | |
1215 | ||
1216 | init_timer(&adapter->watchdog_timer); | |
1217 | adapter->watchdog_timer.function = &igb_watchdog; | |
1218 | adapter->watchdog_timer.data = (unsigned long) adapter; | |
1219 | ||
1220 | init_timer(&adapter->phy_info_timer); | |
1221 | adapter->phy_info_timer.function = &igb_update_phy_info; | |
1222 | adapter->phy_info_timer.data = (unsigned long) adapter; | |
1223 | ||
1224 | INIT_WORK(&adapter->reset_task, igb_reset_task); | |
1225 | INIT_WORK(&adapter->watchdog_task, igb_watchdog_task); | |
1226 | ||
450c87c8 | 1227 | /* Initialize link properties that are user-changeable */ |
9d5c8243 AK |
1228 | adapter->fc_autoneg = true; |
1229 | hw->mac.autoneg = true; | |
1230 | hw->phy.autoneg_advertised = 0x2f; | |
1231 | ||
1232 | hw->fc.original_type = e1000_fc_default; | |
1233 | hw->fc.type = e1000_fc_default; | |
1234 | ||
1235 | adapter->itr_setting = 3; | |
1236 | adapter->itr = IGB_START_ITR; | |
1237 | ||
1238 | igb_validate_mdi_setting(hw); | |
1239 | ||
1240 | adapter->rx_csum = 1; | |
1241 | ||
1242 | /* Initial Wake on LAN setting If APM wake is enabled in the EEPROM, | |
1243 | * enable the ACPI Magic Packet filter | |
1244 | */ | |
1245 | ||
1246 | if (hw->bus.func == 0 || | |
1247 | hw->device_id == E1000_DEV_ID_82575EB_COPPER) | |
312c75ae | 1248 | hw->nvm.ops.read(hw, NVM_INIT_CONTROL3_PORT_A, 1, &eeprom_data); |
9d5c8243 AK |
1249 | |
1250 | if (eeprom_data & eeprom_apme_mask) | |
1251 | adapter->eeprom_wol |= E1000_WUFC_MAG; | |
1252 | ||
1253 | /* now that we have the eeprom settings, apply the special cases where | |
1254 | * the eeprom may be wrong or the board simply won't support wake on | |
1255 | * lan on a particular port */ | |
1256 | switch (pdev->device) { | |
1257 | case E1000_DEV_ID_82575GB_QUAD_COPPER: | |
1258 | adapter->eeprom_wol = 0; | |
1259 | break; | |
1260 | case E1000_DEV_ID_82575EB_FIBER_SERDES: | |
2d064c06 AD |
1261 | case E1000_DEV_ID_82576_FIBER: |
1262 | case E1000_DEV_ID_82576_SERDES: | |
9d5c8243 AK |
1263 | /* Wake events only supported on port A for dual fiber |
1264 | * regardless of eeprom setting */ | |
1265 | if (rd32(E1000_STATUS) & E1000_STATUS_FUNC_1) | |
1266 | adapter->eeprom_wol = 0; | |
1267 | break; | |
1268 | } | |
1269 | ||
1270 | /* initialize the wol settings based on the eeprom settings */ | |
1271 | adapter->wol = adapter->eeprom_wol; | |
e1b86d84 | 1272 | device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol); |
9d5c8243 AK |
1273 | |
1274 | /* reset the hardware with the new settings */ | |
1275 | igb_reset(adapter); | |
1276 | ||
1277 | /* let the f/w know that the h/w is now under the control of the | |
1278 | * driver. */ | |
1279 | igb_get_hw_control(adapter); | |
1280 | ||
1281 | /* tell the stack to leave us alone until igb_open() is called */ | |
1282 | netif_carrier_off(netdev); | |
fd2ea0a7 | 1283 | netif_tx_stop_all_queues(netdev); |
9d5c8243 AK |
1284 | |
1285 | strcpy(netdev->name, "eth%d"); | |
1286 | err = register_netdev(netdev); | |
1287 | if (err) | |
1288 | goto err_register; | |
1289 | ||
421e02f0 | 1290 | #ifdef CONFIG_IGB_DCA |
bbd98fe4 | 1291 | if (dca_add_requester(&pdev->dev) == 0) { |
7dfc16fa | 1292 | adapter->flags |= IGB_FLAG_DCA_ENABLED; |
fe4506b6 JC |
1293 | dev_info(&pdev->dev, "DCA enabled\n"); |
1294 | /* Always use CB2 mode, difference is masked | |
1295 | * in the CB driver. */ | |
1296 | wr32(E1000_DCA_CTRL, 2); | |
1297 | igb_setup_dca(adapter); | |
1298 | } | |
1299 | #endif | |
1300 | ||
9d5c8243 AK |
1301 | dev_info(&pdev->dev, "Intel(R) Gigabit Ethernet Network Connection\n"); |
1302 | /* print bus type/speed/width info */ | |
7c510e4b | 1303 | dev_info(&pdev->dev, "%s: (PCIe:%s:%s) %pM\n", |
9d5c8243 AK |
1304 | netdev->name, |
1305 | ((hw->bus.speed == e1000_bus_speed_2500) | |
1306 | ? "2.5Gb/s" : "unknown"), | |
1307 | ((hw->bus.width == e1000_bus_width_pcie_x4) | |
1308 | ? "Width x4" : (hw->bus.width == e1000_bus_width_pcie_x1) | |
1309 | ? "Width x1" : "unknown"), | |
7c510e4b | 1310 | netdev->dev_addr); |
9d5c8243 AK |
1311 | |
1312 | igb_read_part_num(hw, &part_num); | |
1313 | dev_info(&pdev->dev, "%s: PBA No: %06x-%03x\n", netdev->name, | |
1314 | (part_num >> 8), (part_num & 0xff)); | |
1315 | ||
1316 | dev_info(&pdev->dev, | |
1317 | "Using %s interrupts. %d rx queue(s), %d tx queue(s)\n", | |
1318 | adapter->msix_entries ? "MSI-X" : | |
7dfc16fa | 1319 | (adapter->flags & IGB_FLAG_HAS_MSI) ? "MSI" : "legacy", |
9d5c8243 AK |
1320 | adapter->num_rx_queues, adapter->num_tx_queues); |
1321 | ||
9d5c8243 AK |
1322 | return 0; |
1323 | ||
1324 | err_register: | |
1325 | igb_release_hw_control(adapter); | |
1326 | err_eeprom: | |
1327 | if (!igb_check_reset_block(hw)) | |
f5f4cf08 | 1328 | igb_reset_phy(hw); |
9d5c8243 AK |
1329 | |
1330 | if (hw->flash_address) | |
1331 | iounmap(hw->flash_address); | |
1332 | ||
a88f10ec | 1333 | igb_free_queues(adapter); |
9d5c8243 | 1334 | err_sw_init: |
9d5c8243 AK |
1335 | iounmap(hw->hw_addr); |
1336 | err_ioremap: | |
1337 | free_netdev(netdev); | |
1338 | err_alloc_etherdev: | |
aed5dec3 AD |
1339 | pci_release_selected_regions(pdev, pci_select_bars(pdev, |
1340 | IORESOURCE_MEM)); | |
9d5c8243 AK |
1341 | err_pci_reg: |
1342 | err_dma: | |
1343 | pci_disable_device(pdev); | |
1344 | return err; | |
1345 | } | |
1346 | ||
1347 | /** | |
1348 | * igb_remove - Device Removal Routine | |
1349 | * @pdev: PCI device information struct | |
1350 | * | |
1351 | * igb_remove is called by the PCI subsystem to alert the driver | |
1352 | * that it should release a PCI device. The could be caused by a | |
1353 | * Hot-Plug event, or because the driver is going to be removed from | |
1354 | * memory. | |
1355 | **/ | |
1356 | static void __devexit igb_remove(struct pci_dev *pdev) | |
1357 | { | |
1358 | struct net_device *netdev = pci_get_drvdata(pdev); | |
1359 | struct igb_adapter *adapter = netdev_priv(netdev); | |
fe4506b6 | 1360 | struct e1000_hw *hw = &adapter->hw; |
ea943d41 | 1361 | int err; |
9d5c8243 AK |
1362 | |
1363 | /* flush_scheduled work may reschedule our watchdog task, so | |
1364 | * explicitly disable watchdog tasks from being rescheduled */ | |
1365 | set_bit(__IGB_DOWN, &adapter->state); | |
1366 | del_timer_sync(&adapter->watchdog_timer); | |
1367 | del_timer_sync(&adapter->phy_info_timer); | |
1368 | ||
1369 | flush_scheduled_work(); | |
1370 | ||
421e02f0 | 1371 | #ifdef CONFIG_IGB_DCA |
7dfc16fa | 1372 | if (adapter->flags & IGB_FLAG_DCA_ENABLED) { |
fe4506b6 JC |
1373 | dev_info(&pdev->dev, "DCA disabled\n"); |
1374 | dca_remove_requester(&pdev->dev); | |
7dfc16fa | 1375 | adapter->flags &= ~IGB_FLAG_DCA_ENABLED; |
fe4506b6 JC |
1376 | wr32(E1000_DCA_CTRL, 1); |
1377 | } | |
1378 | #endif | |
1379 | ||
9d5c8243 AK |
1380 | /* Release control of h/w to f/w. If f/w is AMT enabled, this |
1381 | * would have already happened in close and is redundant. */ | |
1382 | igb_release_hw_control(adapter); | |
1383 | ||
1384 | unregister_netdev(netdev); | |
1385 | ||
f5f4cf08 AD |
1386 | if (!igb_check_reset_block(&adapter->hw)) |
1387 | igb_reset_phy(&adapter->hw); | |
9d5c8243 | 1388 | |
9d5c8243 AK |
1389 | igb_reset_interrupt_capability(adapter); |
1390 | ||
a88f10ec | 1391 | igb_free_queues(adapter); |
9d5c8243 | 1392 | |
28b0759c AD |
1393 | iounmap(hw->hw_addr); |
1394 | if (hw->flash_address) | |
1395 | iounmap(hw->flash_address); | |
aed5dec3 AD |
1396 | pci_release_selected_regions(pdev, pci_select_bars(pdev, |
1397 | IORESOURCE_MEM)); | |
9d5c8243 AK |
1398 | |
1399 | free_netdev(netdev); | |
1400 | ||
ea943d41 JK |
1401 | err = pci_disable_pcie_error_reporting(pdev); |
1402 | if (err) | |
1403 | dev_err(&pdev->dev, | |
1404 | "pci_disable_pcie_error_reporting failed 0x%x\n", err); | |
40a914fa | 1405 | |
9d5c8243 AK |
1406 | pci_disable_device(pdev); |
1407 | } | |
1408 | ||
1409 | /** | |
1410 | * igb_sw_init - Initialize general software structures (struct igb_adapter) | |
1411 | * @adapter: board private structure to initialize | |
1412 | * | |
1413 | * igb_sw_init initializes the Adapter private data structure. | |
1414 | * Fields are initialized based on PCI device information and | |
1415 | * OS network device settings (MTU size). | |
1416 | **/ | |
1417 | static int __devinit igb_sw_init(struct igb_adapter *adapter) | |
1418 | { | |
1419 | struct e1000_hw *hw = &adapter->hw; | |
1420 | struct net_device *netdev = adapter->netdev; | |
1421 | struct pci_dev *pdev = adapter->pdev; | |
1422 | ||
1423 | pci_read_config_word(pdev, PCI_COMMAND, &hw->bus.pci_cmd_word); | |
1424 | ||
68fd9910 AD |
1425 | adapter->tx_ring_count = IGB_DEFAULT_TXD; |
1426 | adapter->rx_ring_count = IGB_DEFAULT_RXD; | |
9d5c8243 AK |
1427 | adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE; |
1428 | adapter->rx_ps_hdr_size = 0; /* disable packet split */ | |
1429 | adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN; | |
1430 | adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN; | |
1431 | ||
661086df PWJ |
1432 | /* This call may decrease the number of queues depending on |
1433 | * interrupt mode. */ | |
9d5c8243 AK |
1434 | igb_set_interrupt_capability(adapter); |
1435 | ||
1436 | if (igb_alloc_queues(adapter)) { | |
1437 | dev_err(&pdev->dev, "Unable to allocate memory for queues\n"); | |
1438 | return -ENOMEM; | |
1439 | } | |
1440 | ||
1441 | /* Explicitly disable IRQ since the NIC can be in any state. */ | |
1442 | igb_irq_disable(adapter); | |
1443 | ||
1444 | set_bit(__IGB_DOWN, &adapter->state); | |
1445 | return 0; | |
1446 | } | |
1447 | ||
1448 | /** | |
1449 | * igb_open - Called when a network interface is made active | |
1450 | * @netdev: network interface device structure | |
1451 | * | |
1452 | * Returns 0 on success, negative value on failure | |
1453 | * | |
1454 | * The open entry point is called when a network interface is made | |
1455 | * active by the system (IFF_UP). At this point all resources needed | |
1456 | * for transmit and receive operations are allocated, the interrupt | |
1457 | * handler is registered with the OS, the watchdog timer is started, | |
1458 | * and the stack is notified that the interface is ready. | |
1459 | **/ | |
1460 | static int igb_open(struct net_device *netdev) | |
1461 | { | |
1462 | struct igb_adapter *adapter = netdev_priv(netdev); | |
1463 | struct e1000_hw *hw = &adapter->hw; | |
1464 | int err; | |
1465 | int i; | |
1466 | ||
1467 | /* disallow open during test */ | |
1468 | if (test_bit(__IGB_TESTING, &adapter->state)) | |
1469 | return -EBUSY; | |
1470 | ||
1471 | /* allocate transmit descriptors */ | |
1472 | err = igb_setup_all_tx_resources(adapter); | |
1473 | if (err) | |
1474 | goto err_setup_tx; | |
1475 | ||
1476 | /* allocate receive descriptors */ | |
1477 | err = igb_setup_all_rx_resources(adapter); | |
1478 | if (err) | |
1479 | goto err_setup_rx; | |
1480 | ||
1481 | /* e1000_power_up_phy(adapter); */ | |
1482 | ||
1483 | adapter->mng_vlan_id = IGB_MNG_VLAN_NONE; | |
1484 | if ((adapter->hw.mng_cookie.status & | |
1485 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN)) | |
1486 | igb_update_mng_vlan(adapter); | |
1487 | ||
1488 | /* before we allocate an interrupt, we must be ready to handle it. | |
1489 | * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt | |
1490 | * as soon as we call pci_request_irq, so we have to setup our | |
1491 | * clean_rx handler before we do so. */ | |
1492 | igb_configure(adapter); | |
1493 | ||
1494 | err = igb_request_irq(adapter); | |
1495 | if (err) | |
1496 | goto err_req_irq; | |
1497 | ||
1498 | /* From here on the code is the same as igb_up() */ | |
1499 | clear_bit(__IGB_DOWN, &adapter->state); | |
1500 | ||
844290e5 PW |
1501 | for (i = 0; i < adapter->num_rx_queues; i++) |
1502 | napi_enable(&adapter->rx_ring[i].napi); | |
9d5c8243 AK |
1503 | |
1504 | /* Clear any pending interrupts. */ | |
1505 | rd32(E1000_ICR); | |
844290e5 PW |
1506 | |
1507 | igb_irq_enable(adapter); | |
1508 | ||
d55b53ff JK |
1509 | netif_tx_start_all_queues(netdev); |
1510 | ||
9d5c8243 AK |
1511 | /* Fire a link status change interrupt to start the watchdog. */ |
1512 | wr32(E1000_ICS, E1000_ICS_LSC); | |
1513 | ||
1514 | return 0; | |
1515 | ||
1516 | err_req_irq: | |
1517 | igb_release_hw_control(adapter); | |
1518 | /* e1000_power_down_phy(adapter); */ | |
1519 | igb_free_all_rx_resources(adapter); | |
1520 | err_setup_rx: | |
1521 | igb_free_all_tx_resources(adapter); | |
1522 | err_setup_tx: | |
1523 | igb_reset(adapter); | |
1524 | ||
1525 | return err; | |
1526 | } | |
1527 | ||
1528 | /** | |
1529 | * igb_close - Disables a network interface | |
1530 | * @netdev: network interface device structure | |
1531 | * | |
1532 | * Returns 0, this is not allowed to fail | |
1533 | * | |
1534 | * The close entry point is called when an interface is de-activated | |
1535 | * by the OS. The hardware is still under the driver's control, but | |
1536 | * needs to be disabled. A global MAC reset is issued to stop the | |
1537 | * hardware, and all transmit and receive resources are freed. | |
1538 | **/ | |
1539 | static int igb_close(struct net_device *netdev) | |
1540 | { | |
1541 | struct igb_adapter *adapter = netdev_priv(netdev); | |
1542 | ||
1543 | WARN_ON(test_bit(__IGB_RESETTING, &adapter->state)); | |
1544 | igb_down(adapter); | |
1545 | ||
1546 | igb_free_irq(adapter); | |
1547 | ||
1548 | igb_free_all_tx_resources(adapter); | |
1549 | igb_free_all_rx_resources(adapter); | |
1550 | ||
1551 | /* kill manageability vlan ID if supported, but not if a vlan with | |
1552 | * the same ID is registered on the host OS (let 8021q kill it) */ | |
1553 | if ((adapter->hw.mng_cookie.status & | |
1554 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN) && | |
1555 | !(adapter->vlgrp && | |
1556 | vlan_group_get_device(adapter->vlgrp, adapter->mng_vlan_id))) | |
1557 | igb_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); | |
1558 | ||
1559 | return 0; | |
1560 | } | |
1561 | ||
1562 | /** | |
1563 | * igb_setup_tx_resources - allocate Tx resources (Descriptors) | |
1564 | * @adapter: board private structure | |
1565 | * @tx_ring: tx descriptor ring (for a specific queue) to setup | |
1566 | * | |
1567 | * Return 0 on success, negative on failure | |
1568 | **/ | |
1569 | ||
1570 | int igb_setup_tx_resources(struct igb_adapter *adapter, | |
1571 | struct igb_ring *tx_ring) | |
1572 | { | |
1573 | struct pci_dev *pdev = adapter->pdev; | |
1574 | int size; | |
1575 | ||
1576 | size = sizeof(struct igb_buffer) * tx_ring->count; | |
1577 | tx_ring->buffer_info = vmalloc(size); | |
1578 | if (!tx_ring->buffer_info) | |
1579 | goto err; | |
1580 | memset(tx_ring->buffer_info, 0, size); | |
1581 | ||
1582 | /* round up to nearest 4K */ | |
0e014cb1 | 1583 | tx_ring->size = tx_ring->count * sizeof(struct e1000_tx_desc); |
9d5c8243 AK |
1584 | tx_ring->size = ALIGN(tx_ring->size, 4096); |
1585 | ||
1586 | tx_ring->desc = pci_alloc_consistent(pdev, tx_ring->size, | |
1587 | &tx_ring->dma); | |
1588 | ||
1589 | if (!tx_ring->desc) | |
1590 | goto err; | |
1591 | ||
1592 | tx_ring->adapter = adapter; | |
1593 | tx_ring->next_to_use = 0; | |
1594 | tx_ring->next_to_clean = 0; | |
9d5c8243 AK |
1595 | return 0; |
1596 | ||
1597 | err: | |
1598 | vfree(tx_ring->buffer_info); | |
1599 | dev_err(&adapter->pdev->dev, | |
1600 | "Unable to allocate memory for the transmit descriptor ring\n"); | |
1601 | return -ENOMEM; | |
1602 | } | |
1603 | ||
1604 | /** | |
1605 | * igb_setup_all_tx_resources - wrapper to allocate Tx resources | |
1606 | * (Descriptors) for all queues | |
1607 | * @adapter: board private structure | |
1608 | * | |
1609 | * Return 0 on success, negative on failure | |
1610 | **/ | |
1611 | static int igb_setup_all_tx_resources(struct igb_adapter *adapter) | |
1612 | { | |
1613 | int i, err = 0; | |
661086df | 1614 | int r_idx; |
9d5c8243 AK |
1615 | |
1616 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
1617 | err = igb_setup_tx_resources(adapter, &adapter->tx_ring[i]); | |
1618 | if (err) { | |
1619 | dev_err(&adapter->pdev->dev, | |
1620 | "Allocation for Tx Queue %u failed\n", i); | |
1621 | for (i--; i >= 0; i--) | |
3b644cf6 | 1622 | igb_free_tx_resources(&adapter->tx_ring[i]); |
9d5c8243 AK |
1623 | break; |
1624 | } | |
1625 | } | |
1626 | ||
661086df PWJ |
1627 | for (i = 0; i < IGB_MAX_TX_QUEUES; i++) { |
1628 | r_idx = i % adapter->num_tx_queues; | |
1629 | adapter->multi_tx_table[i] = &adapter->tx_ring[r_idx]; | |
eebbbdba | 1630 | } |
9d5c8243 AK |
1631 | return err; |
1632 | } | |
1633 | ||
1634 | /** | |
1635 | * igb_configure_tx - Configure transmit Unit after Reset | |
1636 | * @adapter: board private structure | |
1637 | * | |
1638 | * Configure the Tx unit of the MAC after a reset. | |
1639 | **/ | |
1640 | static void igb_configure_tx(struct igb_adapter *adapter) | |
1641 | { | |
0e014cb1 | 1642 | u64 tdba; |
9d5c8243 AK |
1643 | struct e1000_hw *hw = &adapter->hw; |
1644 | u32 tctl; | |
1645 | u32 txdctl, txctrl; | |
26bc19ec | 1646 | int i, j; |
9d5c8243 AK |
1647 | |
1648 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
1649 | struct igb_ring *ring = &(adapter->tx_ring[i]); | |
26bc19ec AD |
1650 | j = ring->reg_idx; |
1651 | wr32(E1000_TDLEN(j), | |
9d5c8243 AK |
1652 | ring->count * sizeof(struct e1000_tx_desc)); |
1653 | tdba = ring->dma; | |
26bc19ec | 1654 | wr32(E1000_TDBAL(j), |
9d5c8243 | 1655 | tdba & 0x00000000ffffffffULL); |
26bc19ec | 1656 | wr32(E1000_TDBAH(j), tdba >> 32); |
9d5c8243 | 1657 | |
26bc19ec AD |
1658 | ring->head = E1000_TDH(j); |
1659 | ring->tail = E1000_TDT(j); | |
9d5c8243 AK |
1660 | writel(0, hw->hw_addr + ring->tail); |
1661 | writel(0, hw->hw_addr + ring->head); | |
26bc19ec | 1662 | txdctl = rd32(E1000_TXDCTL(j)); |
9d5c8243 | 1663 | txdctl |= E1000_TXDCTL_QUEUE_ENABLE; |
26bc19ec | 1664 | wr32(E1000_TXDCTL(j), txdctl); |
9d5c8243 AK |
1665 | |
1666 | /* Turn off Relaxed Ordering on head write-backs. The | |
1667 | * writebacks MUST be delivered in order or it will | |
1668 | * completely screw up our bookeeping. | |
1669 | */ | |
26bc19ec | 1670 | txctrl = rd32(E1000_DCA_TXCTRL(j)); |
9d5c8243 | 1671 | txctrl &= ~E1000_DCA_TXCTRL_TX_WB_RO_EN; |
26bc19ec | 1672 | wr32(E1000_DCA_TXCTRL(j), txctrl); |
9d5c8243 AK |
1673 | } |
1674 | ||
1675 | ||
1676 | ||
1677 | /* Use the default values for the Tx Inter Packet Gap (IPG) timer */ | |
1678 | ||
1679 | /* Program the Transmit Control Register */ | |
1680 | ||
1681 | tctl = rd32(E1000_TCTL); | |
1682 | tctl &= ~E1000_TCTL_CT; | |
1683 | tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC | | |
1684 | (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT); | |
1685 | ||
1686 | igb_config_collision_dist(hw); | |
1687 | ||
1688 | /* Setup Transmit Descriptor Settings for eop descriptor */ | |
1689 | adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_RS; | |
1690 | ||
1691 | /* Enable transmits */ | |
1692 | tctl |= E1000_TCTL_EN; | |
1693 | ||
1694 | wr32(E1000_TCTL, tctl); | |
1695 | } | |
1696 | ||
1697 | /** | |
1698 | * igb_setup_rx_resources - allocate Rx resources (Descriptors) | |
1699 | * @adapter: board private structure | |
1700 | * @rx_ring: rx descriptor ring (for a specific queue) to setup | |
1701 | * | |
1702 | * Returns 0 on success, negative on failure | |
1703 | **/ | |
1704 | ||
1705 | int igb_setup_rx_resources(struct igb_adapter *adapter, | |
1706 | struct igb_ring *rx_ring) | |
1707 | { | |
1708 | struct pci_dev *pdev = adapter->pdev; | |
1709 | int size, desc_len; | |
1710 | ||
1711 | size = sizeof(struct igb_buffer) * rx_ring->count; | |
1712 | rx_ring->buffer_info = vmalloc(size); | |
1713 | if (!rx_ring->buffer_info) | |
1714 | goto err; | |
1715 | memset(rx_ring->buffer_info, 0, size); | |
1716 | ||
1717 | desc_len = sizeof(union e1000_adv_rx_desc); | |
1718 | ||
1719 | /* Round up to nearest 4K */ | |
1720 | rx_ring->size = rx_ring->count * desc_len; | |
1721 | rx_ring->size = ALIGN(rx_ring->size, 4096); | |
1722 | ||
1723 | rx_ring->desc = pci_alloc_consistent(pdev, rx_ring->size, | |
1724 | &rx_ring->dma); | |
1725 | ||
1726 | if (!rx_ring->desc) | |
1727 | goto err; | |
1728 | ||
1729 | rx_ring->next_to_clean = 0; | |
1730 | rx_ring->next_to_use = 0; | |
9d5c8243 AK |
1731 | |
1732 | rx_ring->adapter = adapter; | |
9d5c8243 AK |
1733 | |
1734 | return 0; | |
1735 | ||
1736 | err: | |
1737 | vfree(rx_ring->buffer_info); | |
1738 | dev_err(&adapter->pdev->dev, "Unable to allocate memory for " | |
1739 | "the receive descriptor ring\n"); | |
1740 | return -ENOMEM; | |
1741 | } | |
1742 | ||
1743 | /** | |
1744 | * igb_setup_all_rx_resources - wrapper to allocate Rx resources | |
1745 | * (Descriptors) for all queues | |
1746 | * @adapter: board private structure | |
1747 | * | |
1748 | * Return 0 on success, negative on failure | |
1749 | **/ | |
1750 | static int igb_setup_all_rx_resources(struct igb_adapter *adapter) | |
1751 | { | |
1752 | int i, err = 0; | |
1753 | ||
1754 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
1755 | err = igb_setup_rx_resources(adapter, &adapter->rx_ring[i]); | |
1756 | if (err) { | |
1757 | dev_err(&adapter->pdev->dev, | |
1758 | "Allocation for Rx Queue %u failed\n", i); | |
1759 | for (i--; i >= 0; i--) | |
3b644cf6 | 1760 | igb_free_rx_resources(&adapter->rx_ring[i]); |
9d5c8243 AK |
1761 | break; |
1762 | } | |
1763 | } | |
1764 | ||
1765 | return err; | |
1766 | } | |
1767 | ||
1768 | /** | |
1769 | * igb_setup_rctl - configure the receive control registers | |
1770 | * @adapter: Board private structure | |
1771 | **/ | |
1772 | static void igb_setup_rctl(struct igb_adapter *adapter) | |
1773 | { | |
1774 | struct e1000_hw *hw = &adapter->hw; | |
1775 | u32 rctl; | |
1776 | u32 srrctl = 0; | |
26bc19ec | 1777 | int i, j; |
9d5c8243 AK |
1778 | |
1779 | rctl = rd32(E1000_RCTL); | |
1780 | ||
1781 | rctl &= ~(3 << E1000_RCTL_MO_SHIFT); | |
69d728ba | 1782 | rctl &= ~(E1000_RCTL_LBM_TCVR | E1000_RCTL_LBM_MAC); |
9d5c8243 | 1783 | |
69d728ba | 1784 | rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | E1000_RCTL_RDMTS_HALF | |
28b0759c | 1785 | (hw->mac.mc_filter_type << E1000_RCTL_MO_SHIFT); |
9d5c8243 | 1786 | |
87cb7e8c AK |
1787 | /* |
1788 | * enable stripping of CRC. It's unlikely this will break BMC | |
1789 | * redirection as it did with e1000. Newer features require | |
1790 | * that the HW strips the CRC. | |
9d5c8243 | 1791 | */ |
87cb7e8c | 1792 | rctl |= E1000_RCTL_SECRC; |
9d5c8243 | 1793 | |
9b07f3d3 | 1794 | /* |
ec54d7d6 | 1795 | * disable store bad packets and clear size bits. |
9b07f3d3 | 1796 | */ |
ec54d7d6 | 1797 | rctl &= ~(E1000_RCTL_SBP | E1000_RCTL_SZ_256); |
9d5c8243 | 1798 | |
ec54d7d6 | 1799 | /* enable LPE when to prevent packets larger than max_frame_size */ |
9b07f3d3 | 1800 | rctl |= E1000_RCTL_LPE; |
b4557be2 AD |
1801 | |
1802 | /* Setup buffer sizes */ | |
1803 | switch (adapter->rx_buffer_len) { | |
1804 | case IGB_RXBUFFER_256: | |
1805 | rctl |= E1000_RCTL_SZ_256; | |
1806 | break; | |
1807 | case IGB_RXBUFFER_512: | |
1808 | rctl |= E1000_RCTL_SZ_512; | |
1809 | break; | |
1810 | default: | |
1811 | srrctl = ALIGN(adapter->rx_buffer_len, 1024) | |
1812 | >> E1000_SRRCTL_BSIZEPKT_SHIFT; | |
1813 | break; | |
9d5c8243 AK |
1814 | } |
1815 | ||
1816 | /* 82575 and greater support packet-split where the protocol | |
1817 | * header is placed in skb->data and the packet data is | |
1818 | * placed in pages hanging off of skb_shinfo(skb)->nr_frags. | |
1819 | * In the case of a non-split, skb->data is linearly filled, | |
1820 | * followed by the page buffers. Therefore, skb->data is | |
1821 | * sized to hold the largest protocol header. | |
1822 | */ | |
1823 | /* allocations using alloc_page take too long for regular MTU | |
1824 | * so only enable packet split for jumbo frames */ | |
ec54d7d6 | 1825 | if (adapter->netdev->mtu > ETH_DATA_LEN) { |
9d5c8243 | 1826 | adapter->rx_ps_hdr_size = IGB_RXBUFFER_128; |
bf36c1a0 | 1827 | srrctl |= adapter->rx_ps_hdr_size << |
9d5c8243 | 1828 | E1000_SRRCTL_BSIZEHDRSIZE_SHIFT; |
9d5c8243 AK |
1829 | srrctl |= E1000_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS; |
1830 | } else { | |
1831 | adapter->rx_ps_hdr_size = 0; | |
1832 | srrctl |= E1000_SRRCTL_DESCTYPE_ADV_ONEBUF; | |
1833 | } | |
1834 | ||
26bc19ec AD |
1835 | for (i = 0; i < adapter->num_rx_queues; i++) { |
1836 | j = adapter->rx_ring[i].reg_idx; | |
1837 | wr32(E1000_SRRCTL(j), srrctl); | |
1838 | } | |
9d5c8243 AK |
1839 | |
1840 | wr32(E1000_RCTL, rctl); | |
1841 | } | |
1842 | ||
1843 | /** | |
1844 | * igb_configure_rx - Configure receive Unit after Reset | |
1845 | * @adapter: board private structure | |
1846 | * | |
1847 | * Configure the Rx unit of the MAC after a reset. | |
1848 | **/ | |
1849 | static void igb_configure_rx(struct igb_adapter *adapter) | |
1850 | { | |
1851 | u64 rdba; | |
1852 | struct e1000_hw *hw = &adapter->hw; | |
1853 | u32 rctl, rxcsum; | |
1854 | u32 rxdctl; | |
26bc19ec | 1855 | int i, j; |
9d5c8243 AK |
1856 | |
1857 | /* disable receives while setting up the descriptors */ | |
1858 | rctl = rd32(E1000_RCTL); | |
1859 | wr32(E1000_RCTL, rctl & ~E1000_RCTL_EN); | |
1860 | wrfl(); | |
1861 | mdelay(10); | |
1862 | ||
1863 | if (adapter->itr_setting > 3) | |
6eb5a7f1 | 1864 | wr32(E1000_ITR, adapter->itr); |
9d5c8243 AK |
1865 | |
1866 | /* Setup the HW Rx Head and Tail Descriptor Pointers and | |
1867 | * the Base and Length of the Rx Descriptor Ring */ | |
1868 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
1869 | struct igb_ring *ring = &(adapter->rx_ring[i]); | |
26bc19ec | 1870 | j = ring->reg_idx; |
9d5c8243 | 1871 | rdba = ring->dma; |
26bc19ec | 1872 | wr32(E1000_RDBAL(j), |
9d5c8243 | 1873 | rdba & 0x00000000ffffffffULL); |
26bc19ec AD |
1874 | wr32(E1000_RDBAH(j), rdba >> 32); |
1875 | wr32(E1000_RDLEN(j), | |
9d5c8243 AK |
1876 | ring->count * sizeof(union e1000_adv_rx_desc)); |
1877 | ||
26bc19ec AD |
1878 | ring->head = E1000_RDH(j); |
1879 | ring->tail = E1000_RDT(j); | |
9d5c8243 AK |
1880 | writel(0, hw->hw_addr + ring->tail); |
1881 | writel(0, hw->hw_addr + ring->head); | |
1882 | ||
26bc19ec | 1883 | rxdctl = rd32(E1000_RXDCTL(j)); |
9d5c8243 AK |
1884 | rxdctl |= E1000_RXDCTL_QUEUE_ENABLE; |
1885 | rxdctl &= 0xFFF00000; | |
1886 | rxdctl |= IGB_RX_PTHRESH; | |
1887 | rxdctl |= IGB_RX_HTHRESH << 8; | |
1888 | rxdctl |= IGB_RX_WTHRESH << 16; | |
26bc19ec | 1889 | wr32(E1000_RXDCTL(j), rxdctl); |
9d5c8243 AK |
1890 | } |
1891 | ||
1892 | if (adapter->num_rx_queues > 1) { | |
1893 | u32 random[10]; | |
1894 | u32 mrqc; | |
1895 | u32 j, shift; | |
1896 | union e1000_reta { | |
1897 | u32 dword; | |
1898 | u8 bytes[4]; | |
1899 | } reta; | |
1900 | ||
1901 | get_random_bytes(&random[0], 40); | |
1902 | ||
2d064c06 AD |
1903 | if (hw->mac.type >= e1000_82576) |
1904 | shift = 0; | |
1905 | else | |
1906 | shift = 6; | |
9d5c8243 AK |
1907 | for (j = 0; j < (32 * 4); j++) { |
1908 | reta.bytes[j & 3] = | |
26bc19ec | 1909 | adapter->rx_ring[(j % adapter->num_rx_queues)].reg_idx << shift; |
9d5c8243 AK |
1910 | if ((j & 3) == 3) |
1911 | writel(reta.dword, | |
1912 | hw->hw_addr + E1000_RETA(0) + (j & ~3)); | |
1913 | } | |
1914 | mrqc = E1000_MRQC_ENABLE_RSS_4Q; | |
1915 | ||
1916 | /* Fill out hash function seeds */ | |
1917 | for (j = 0; j < 10; j++) | |
1918 | array_wr32(E1000_RSSRK(0), j, random[j]); | |
1919 | ||
1920 | mrqc |= (E1000_MRQC_RSS_FIELD_IPV4 | | |
1921 | E1000_MRQC_RSS_FIELD_IPV4_TCP); | |
1922 | mrqc |= (E1000_MRQC_RSS_FIELD_IPV6 | | |
1923 | E1000_MRQC_RSS_FIELD_IPV6_TCP); | |
1924 | mrqc |= (E1000_MRQC_RSS_FIELD_IPV4_UDP | | |
1925 | E1000_MRQC_RSS_FIELD_IPV6_UDP); | |
1926 | mrqc |= (E1000_MRQC_RSS_FIELD_IPV6_UDP_EX | | |
1927 | E1000_MRQC_RSS_FIELD_IPV6_TCP_EX); | |
1928 | ||
1929 | ||
1930 | wr32(E1000_MRQC, mrqc); | |
1931 | ||
1932 | /* Multiqueue and raw packet checksumming are mutually | |
1933 | * exclusive. Note that this not the same as TCP/IP | |
1934 | * checksumming, which works fine. */ | |
1935 | rxcsum = rd32(E1000_RXCSUM); | |
1936 | rxcsum |= E1000_RXCSUM_PCSD; | |
1937 | wr32(E1000_RXCSUM, rxcsum); | |
1938 | } else { | |
1939 | /* Enable Receive Checksum Offload for TCP and UDP */ | |
1940 | rxcsum = rd32(E1000_RXCSUM); | |
1941 | if (adapter->rx_csum) { | |
1942 | rxcsum |= E1000_RXCSUM_TUOFL; | |
1943 | ||
1944 | /* Enable IPv4 payload checksum for UDP fragments | |
1945 | * Must be used in conjunction with packet-split. */ | |
1946 | if (adapter->rx_ps_hdr_size) | |
1947 | rxcsum |= E1000_RXCSUM_IPPCSE; | |
1948 | } else { | |
1949 | rxcsum &= ~E1000_RXCSUM_TUOFL; | |
1950 | /* don't need to clear IPPCSE as it defaults to 0 */ | |
1951 | } | |
1952 | wr32(E1000_RXCSUM, rxcsum); | |
1953 | } | |
1954 | ||
1955 | if (adapter->vlgrp) | |
1956 | wr32(E1000_RLPML, | |
1957 | adapter->max_frame_size + VLAN_TAG_SIZE); | |
1958 | else | |
1959 | wr32(E1000_RLPML, adapter->max_frame_size); | |
1960 | ||
1961 | /* Enable Receives */ | |
1962 | wr32(E1000_RCTL, rctl); | |
1963 | } | |
1964 | ||
1965 | /** | |
1966 | * igb_free_tx_resources - Free Tx Resources per Queue | |
9d5c8243 AK |
1967 | * @tx_ring: Tx descriptor ring for a specific queue |
1968 | * | |
1969 | * Free all transmit software resources | |
1970 | **/ | |
68fd9910 | 1971 | void igb_free_tx_resources(struct igb_ring *tx_ring) |
9d5c8243 | 1972 | { |
3b644cf6 | 1973 | struct pci_dev *pdev = tx_ring->adapter->pdev; |
9d5c8243 | 1974 | |
3b644cf6 | 1975 | igb_clean_tx_ring(tx_ring); |
9d5c8243 AK |
1976 | |
1977 | vfree(tx_ring->buffer_info); | |
1978 | tx_ring->buffer_info = NULL; | |
1979 | ||
1980 | pci_free_consistent(pdev, tx_ring->size, tx_ring->desc, tx_ring->dma); | |
1981 | ||
1982 | tx_ring->desc = NULL; | |
1983 | } | |
1984 | ||
1985 | /** | |
1986 | * igb_free_all_tx_resources - Free Tx Resources for All Queues | |
1987 | * @adapter: board private structure | |
1988 | * | |
1989 | * Free all transmit software resources | |
1990 | **/ | |
1991 | static void igb_free_all_tx_resources(struct igb_adapter *adapter) | |
1992 | { | |
1993 | int i; | |
1994 | ||
1995 | for (i = 0; i < adapter->num_tx_queues; i++) | |
3b644cf6 | 1996 | igb_free_tx_resources(&adapter->tx_ring[i]); |
9d5c8243 AK |
1997 | } |
1998 | ||
1999 | static void igb_unmap_and_free_tx_resource(struct igb_adapter *adapter, | |
2000 | struct igb_buffer *buffer_info) | |
2001 | { | |
2002 | if (buffer_info->dma) { | |
2003 | pci_unmap_page(adapter->pdev, | |
2004 | buffer_info->dma, | |
2005 | buffer_info->length, | |
2006 | PCI_DMA_TODEVICE); | |
2007 | buffer_info->dma = 0; | |
2008 | } | |
2009 | if (buffer_info->skb) { | |
2010 | dev_kfree_skb_any(buffer_info->skb); | |
2011 | buffer_info->skb = NULL; | |
2012 | } | |
2013 | buffer_info->time_stamp = 0; | |
2014 | /* buffer_info must be completely set up in the transmit path */ | |
2015 | } | |
2016 | ||
2017 | /** | |
2018 | * igb_clean_tx_ring - Free Tx Buffers | |
9d5c8243 AK |
2019 | * @tx_ring: ring to be cleaned |
2020 | **/ | |
3b644cf6 | 2021 | static void igb_clean_tx_ring(struct igb_ring *tx_ring) |
9d5c8243 | 2022 | { |
3b644cf6 | 2023 | struct igb_adapter *adapter = tx_ring->adapter; |
9d5c8243 AK |
2024 | struct igb_buffer *buffer_info; |
2025 | unsigned long size; | |
2026 | unsigned int i; | |
2027 | ||
2028 | if (!tx_ring->buffer_info) | |
2029 | return; | |
2030 | /* Free all the Tx ring sk_buffs */ | |
2031 | ||
2032 | for (i = 0; i < tx_ring->count; i++) { | |
2033 | buffer_info = &tx_ring->buffer_info[i]; | |
2034 | igb_unmap_and_free_tx_resource(adapter, buffer_info); | |
2035 | } | |
2036 | ||
2037 | size = sizeof(struct igb_buffer) * tx_ring->count; | |
2038 | memset(tx_ring->buffer_info, 0, size); | |
2039 | ||
2040 | /* Zero out the descriptor ring */ | |
2041 | ||
2042 | memset(tx_ring->desc, 0, tx_ring->size); | |
2043 | ||
2044 | tx_ring->next_to_use = 0; | |
2045 | tx_ring->next_to_clean = 0; | |
2046 | ||
2047 | writel(0, adapter->hw.hw_addr + tx_ring->head); | |
2048 | writel(0, adapter->hw.hw_addr + tx_ring->tail); | |
2049 | } | |
2050 | ||
2051 | /** | |
2052 | * igb_clean_all_tx_rings - Free Tx Buffers for all queues | |
2053 | * @adapter: board private structure | |
2054 | **/ | |
2055 | static void igb_clean_all_tx_rings(struct igb_adapter *adapter) | |
2056 | { | |
2057 | int i; | |
2058 | ||
2059 | for (i = 0; i < adapter->num_tx_queues; i++) | |
3b644cf6 | 2060 | igb_clean_tx_ring(&adapter->tx_ring[i]); |
9d5c8243 AK |
2061 | } |
2062 | ||
2063 | /** | |
2064 | * igb_free_rx_resources - Free Rx Resources | |
9d5c8243 AK |
2065 | * @rx_ring: ring to clean the resources from |
2066 | * | |
2067 | * Free all receive software resources | |
2068 | **/ | |
68fd9910 | 2069 | void igb_free_rx_resources(struct igb_ring *rx_ring) |
9d5c8243 | 2070 | { |
3b644cf6 | 2071 | struct pci_dev *pdev = rx_ring->adapter->pdev; |
9d5c8243 | 2072 | |
3b644cf6 | 2073 | igb_clean_rx_ring(rx_ring); |
9d5c8243 AK |
2074 | |
2075 | vfree(rx_ring->buffer_info); | |
2076 | rx_ring->buffer_info = NULL; | |
2077 | ||
2078 | pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma); | |
2079 | ||
2080 | rx_ring->desc = NULL; | |
2081 | } | |
2082 | ||
2083 | /** | |
2084 | * igb_free_all_rx_resources - Free Rx Resources for All Queues | |
2085 | * @adapter: board private structure | |
2086 | * | |
2087 | * Free all receive software resources | |
2088 | **/ | |
2089 | static void igb_free_all_rx_resources(struct igb_adapter *adapter) | |
2090 | { | |
2091 | int i; | |
2092 | ||
2093 | for (i = 0; i < adapter->num_rx_queues; i++) | |
3b644cf6 | 2094 | igb_free_rx_resources(&adapter->rx_ring[i]); |
9d5c8243 AK |
2095 | } |
2096 | ||
2097 | /** | |
2098 | * igb_clean_rx_ring - Free Rx Buffers per Queue | |
9d5c8243 AK |
2099 | * @rx_ring: ring to free buffers from |
2100 | **/ | |
3b644cf6 | 2101 | static void igb_clean_rx_ring(struct igb_ring *rx_ring) |
9d5c8243 | 2102 | { |
3b644cf6 | 2103 | struct igb_adapter *adapter = rx_ring->adapter; |
9d5c8243 AK |
2104 | struct igb_buffer *buffer_info; |
2105 | struct pci_dev *pdev = adapter->pdev; | |
2106 | unsigned long size; | |
2107 | unsigned int i; | |
2108 | ||
2109 | if (!rx_ring->buffer_info) | |
2110 | return; | |
2111 | /* Free all the Rx ring sk_buffs */ | |
2112 | for (i = 0; i < rx_ring->count; i++) { | |
2113 | buffer_info = &rx_ring->buffer_info[i]; | |
2114 | if (buffer_info->dma) { | |
2115 | if (adapter->rx_ps_hdr_size) | |
2116 | pci_unmap_single(pdev, buffer_info->dma, | |
2117 | adapter->rx_ps_hdr_size, | |
2118 | PCI_DMA_FROMDEVICE); | |
2119 | else | |
2120 | pci_unmap_single(pdev, buffer_info->dma, | |
2121 | adapter->rx_buffer_len, | |
2122 | PCI_DMA_FROMDEVICE); | |
2123 | buffer_info->dma = 0; | |
2124 | } | |
2125 | ||
2126 | if (buffer_info->skb) { | |
2127 | dev_kfree_skb(buffer_info->skb); | |
2128 | buffer_info->skb = NULL; | |
2129 | } | |
2130 | if (buffer_info->page) { | |
bf36c1a0 AD |
2131 | if (buffer_info->page_dma) |
2132 | pci_unmap_page(pdev, buffer_info->page_dma, | |
2133 | PAGE_SIZE / 2, | |
2134 | PCI_DMA_FROMDEVICE); | |
9d5c8243 AK |
2135 | put_page(buffer_info->page); |
2136 | buffer_info->page = NULL; | |
2137 | buffer_info->page_dma = 0; | |
bf36c1a0 | 2138 | buffer_info->page_offset = 0; |
9d5c8243 AK |
2139 | } |
2140 | } | |
2141 | ||
9d5c8243 AK |
2142 | size = sizeof(struct igb_buffer) * rx_ring->count; |
2143 | memset(rx_ring->buffer_info, 0, size); | |
2144 | ||
2145 | /* Zero out the descriptor ring */ | |
2146 | memset(rx_ring->desc, 0, rx_ring->size); | |
2147 | ||
2148 | rx_ring->next_to_clean = 0; | |
2149 | rx_ring->next_to_use = 0; | |
2150 | ||
2151 | writel(0, adapter->hw.hw_addr + rx_ring->head); | |
2152 | writel(0, adapter->hw.hw_addr + rx_ring->tail); | |
2153 | } | |
2154 | ||
2155 | /** | |
2156 | * igb_clean_all_rx_rings - Free Rx Buffers for all queues | |
2157 | * @adapter: board private structure | |
2158 | **/ | |
2159 | static void igb_clean_all_rx_rings(struct igb_adapter *adapter) | |
2160 | { | |
2161 | int i; | |
2162 | ||
2163 | for (i = 0; i < adapter->num_rx_queues; i++) | |
3b644cf6 | 2164 | igb_clean_rx_ring(&adapter->rx_ring[i]); |
9d5c8243 AK |
2165 | } |
2166 | ||
2167 | /** | |
2168 | * igb_set_mac - Change the Ethernet Address of the NIC | |
2169 | * @netdev: network interface device structure | |
2170 | * @p: pointer to an address structure | |
2171 | * | |
2172 | * Returns 0 on success, negative on failure | |
2173 | **/ | |
2174 | static int igb_set_mac(struct net_device *netdev, void *p) | |
2175 | { | |
2176 | struct igb_adapter *adapter = netdev_priv(netdev); | |
28b0759c | 2177 | struct e1000_hw *hw = &adapter->hw; |
9d5c8243 AK |
2178 | struct sockaddr *addr = p; |
2179 | ||
2180 | if (!is_valid_ether_addr(addr->sa_data)) | |
2181 | return -EADDRNOTAVAIL; | |
2182 | ||
2183 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
28b0759c | 2184 | memcpy(hw->mac.addr, addr->sa_data, netdev->addr_len); |
9d5c8243 | 2185 | |
28b0759c | 2186 | hw->mac.ops.rar_set(hw, hw->mac.addr, 0); |
9d5c8243 AK |
2187 | |
2188 | return 0; | |
2189 | } | |
2190 | ||
2191 | /** | |
2192 | * igb_set_multi - Multicast and Promiscuous mode set | |
2193 | * @netdev: network interface device structure | |
2194 | * | |
2195 | * The set_multi entry point is called whenever the multicast address | |
2196 | * list or the network interface flags are updated. This routine is | |
2197 | * responsible for configuring the hardware for proper multicast, | |
2198 | * promiscuous mode, and all-multi behavior. | |
2199 | **/ | |
2200 | static void igb_set_multi(struct net_device *netdev) | |
2201 | { | |
2202 | struct igb_adapter *adapter = netdev_priv(netdev); | |
2203 | struct e1000_hw *hw = &adapter->hw; | |
2204 | struct e1000_mac_info *mac = &hw->mac; | |
2205 | struct dev_mc_list *mc_ptr; | |
2206 | u8 *mta_list; | |
2207 | u32 rctl; | |
2208 | int i; | |
2209 | ||
2210 | /* Check for Promiscuous and All Multicast modes */ | |
2211 | ||
2212 | rctl = rd32(E1000_RCTL); | |
2213 | ||
746b9f02 | 2214 | if (netdev->flags & IFF_PROMISC) { |
9d5c8243 | 2215 | rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE); |
746b9f02 PM |
2216 | rctl &= ~E1000_RCTL_VFE; |
2217 | } else { | |
2218 | if (netdev->flags & IFF_ALLMULTI) { | |
2219 | rctl |= E1000_RCTL_MPE; | |
2220 | rctl &= ~E1000_RCTL_UPE; | |
2221 | } else | |
2222 | rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE); | |
78ed11a5 | 2223 | rctl |= E1000_RCTL_VFE; |
746b9f02 | 2224 | } |
9d5c8243 AK |
2225 | wr32(E1000_RCTL, rctl); |
2226 | ||
2227 | if (!netdev->mc_count) { | |
2228 | /* nothing to program, so clear mc list */ | |
8a900862 AD |
2229 | igb_update_mc_addr_list(hw, NULL, 0, 1, |
2230 | mac->rar_entry_count); | |
9d5c8243 AK |
2231 | return; |
2232 | } | |
2233 | ||
2234 | mta_list = kzalloc(netdev->mc_count * 6, GFP_ATOMIC); | |
2235 | if (!mta_list) | |
2236 | return; | |
2237 | ||
2238 | /* The shared function expects a packed array of only addresses. */ | |
2239 | mc_ptr = netdev->mc_list; | |
2240 | ||
2241 | for (i = 0; i < netdev->mc_count; i++) { | |
2242 | if (!mc_ptr) | |
2243 | break; | |
2244 | memcpy(mta_list + (i*ETH_ALEN), mc_ptr->dmi_addr, ETH_ALEN); | |
2245 | mc_ptr = mc_ptr->next; | |
2246 | } | |
8a900862 | 2247 | igb_update_mc_addr_list(hw, mta_list, i, 1, mac->rar_entry_count); |
9d5c8243 AK |
2248 | kfree(mta_list); |
2249 | } | |
2250 | ||
2251 | /* Need to wait a few seconds after link up to get diagnostic information from | |
2252 | * the phy */ | |
2253 | static void igb_update_phy_info(unsigned long data) | |
2254 | { | |
2255 | struct igb_adapter *adapter = (struct igb_adapter *) data; | |
f5f4cf08 | 2256 | igb_get_phy_info(&adapter->hw); |
9d5c8243 AK |
2257 | } |
2258 | ||
4d6b725e AD |
2259 | /** |
2260 | * igb_has_link - check shared code for link and determine up/down | |
2261 | * @adapter: pointer to driver private info | |
2262 | **/ | |
2263 | static bool igb_has_link(struct igb_adapter *adapter) | |
2264 | { | |
2265 | struct e1000_hw *hw = &adapter->hw; | |
2266 | bool link_active = false; | |
2267 | s32 ret_val = 0; | |
2268 | ||
2269 | /* get_link_status is set on LSC (link status) interrupt or | |
2270 | * rx sequence error interrupt. get_link_status will stay | |
2271 | * false until the e1000_check_for_link establishes link | |
2272 | * for copper adapters ONLY | |
2273 | */ | |
2274 | switch (hw->phy.media_type) { | |
2275 | case e1000_media_type_copper: | |
2276 | if (hw->mac.get_link_status) { | |
2277 | ret_val = hw->mac.ops.check_for_link(hw); | |
2278 | link_active = !hw->mac.get_link_status; | |
2279 | } else { | |
2280 | link_active = true; | |
2281 | } | |
2282 | break; | |
2283 | case e1000_media_type_fiber: | |
2284 | ret_val = hw->mac.ops.check_for_link(hw); | |
2285 | link_active = !!(rd32(E1000_STATUS) & E1000_STATUS_LU); | |
2286 | break; | |
2287 | case e1000_media_type_internal_serdes: | |
2288 | ret_val = hw->mac.ops.check_for_link(hw); | |
2289 | link_active = hw->mac.serdes_has_link; | |
2290 | break; | |
2291 | default: | |
2292 | case e1000_media_type_unknown: | |
2293 | break; | |
2294 | } | |
2295 | ||
2296 | return link_active; | |
2297 | } | |
2298 | ||
9d5c8243 AK |
2299 | /** |
2300 | * igb_watchdog - Timer Call-back | |
2301 | * @data: pointer to adapter cast into an unsigned long | |
2302 | **/ | |
2303 | static void igb_watchdog(unsigned long data) | |
2304 | { | |
2305 | struct igb_adapter *adapter = (struct igb_adapter *)data; | |
2306 | /* Do the rest outside of interrupt context */ | |
2307 | schedule_work(&adapter->watchdog_task); | |
2308 | } | |
2309 | ||
2310 | static void igb_watchdog_task(struct work_struct *work) | |
2311 | { | |
2312 | struct igb_adapter *adapter = container_of(work, | |
2313 | struct igb_adapter, watchdog_task); | |
2314 | struct e1000_hw *hw = &adapter->hw; | |
9d5c8243 AK |
2315 | struct net_device *netdev = adapter->netdev; |
2316 | struct igb_ring *tx_ring = adapter->tx_ring; | |
9d5c8243 | 2317 | u32 link; |
7a6ea550 | 2318 | u32 eics = 0; |
7a6ea550 | 2319 | int i; |
9d5c8243 | 2320 | |
4d6b725e AD |
2321 | link = igb_has_link(adapter); |
2322 | if ((netif_carrier_ok(netdev)) && link) | |
9d5c8243 AK |
2323 | goto link_up; |
2324 | ||
9d5c8243 AK |
2325 | if (link) { |
2326 | if (!netif_carrier_ok(netdev)) { | |
2327 | u32 ctrl; | |
2328 | hw->mac.ops.get_speed_and_duplex(&adapter->hw, | |
2329 | &adapter->link_speed, | |
2330 | &adapter->link_duplex); | |
2331 | ||
2332 | ctrl = rd32(E1000_CTRL); | |
527d47c1 AD |
2333 | /* Links status message must follow this format */ |
2334 | printk(KERN_INFO "igb: %s NIC Link is Up %d Mbps %s, " | |
9d5c8243 | 2335 | "Flow Control: %s\n", |
527d47c1 | 2336 | netdev->name, |
9d5c8243 AK |
2337 | adapter->link_speed, |
2338 | adapter->link_duplex == FULL_DUPLEX ? | |
2339 | "Full Duplex" : "Half Duplex", | |
2340 | ((ctrl & E1000_CTRL_TFCE) && (ctrl & | |
2341 | E1000_CTRL_RFCE)) ? "RX/TX" : ((ctrl & | |
2342 | E1000_CTRL_RFCE) ? "RX" : ((ctrl & | |
2343 | E1000_CTRL_TFCE) ? "TX" : "None"))); | |
2344 | ||
2345 | /* tweak tx_queue_len according to speed/duplex and | |
2346 | * adjust the timeout factor */ | |
2347 | netdev->tx_queue_len = adapter->tx_queue_len; | |
2348 | adapter->tx_timeout_factor = 1; | |
2349 | switch (adapter->link_speed) { | |
2350 | case SPEED_10: | |
2351 | netdev->tx_queue_len = 10; | |
2352 | adapter->tx_timeout_factor = 14; | |
2353 | break; | |
2354 | case SPEED_100: | |
2355 | netdev->tx_queue_len = 100; | |
2356 | /* maybe add some timeout factor ? */ | |
2357 | break; | |
2358 | } | |
2359 | ||
2360 | netif_carrier_on(netdev); | |
fd2ea0a7 | 2361 | netif_tx_wake_all_queues(netdev); |
9d5c8243 | 2362 | |
4b1a9877 | 2363 | /* link state has changed, schedule phy info update */ |
9d5c8243 AK |
2364 | if (!test_bit(__IGB_DOWN, &adapter->state)) |
2365 | mod_timer(&adapter->phy_info_timer, | |
2366 | round_jiffies(jiffies + 2 * HZ)); | |
2367 | } | |
2368 | } else { | |
2369 | if (netif_carrier_ok(netdev)) { | |
2370 | adapter->link_speed = 0; | |
2371 | adapter->link_duplex = 0; | |
527d47c1 AD |
2372 | /* Links status message must follow this format */ |
2373 | printk(KERN_INFO "igb: %s NIC Link is Down\n", | |
2374 | netdev->name); | |
9d5c8243 | 2375 | netif_carrier_off(netdev); |
fd2ea0a7 | 2376 | netif_tx_stop_all_queues(netdev); |
4b1a9877 AD |
2377 | |
2378 | /* link state has changed, schedule phy info update */ | |
9d5c8243 AK |
2379 | if (!test_bit(__IGB_DOWN, &adapter->state)) |
2380 | mod_timer(&adapter->phy_info_timer, | |
2381 | round_jiffies(jiffies + 2 * HZ)); | |
2382 | } | |
2383 | } | |
2384 | ||
2385 | link_up: | |
2386 | igb_update_stats(adapter); | |
2387 | ||
4b1a9877 | 2388 | hw->mac.tx_packet_delta = adapter->stats.tpt - adapter->tpt_old; |
9d5c8243 | 2389 | adapter->tpt_old = adapter->stats.tpt; |
4b1a9877 | 2390 | hw->mac.collision_delta = adapter->stats.colc - adapter->colc_old; |
9d5c8243 AK |
2391 | adapter->colc_old = adapter->stats.colc; |
2392 | ||
2393 | adapter->gorc = adapter->stats.gorc - adapter->gorc_old; | |
2394 | adapter->gorc_old = adapter->stats.gorc; | |
2395 | adapter->gotc = adapter->stats.gotc - adapter->gotc_old; | |
2396 | adapter->gotc_old = adapter->stats.gotc; | |
2397 | ||
2398 | igb_update_adaptive(&adapter->hw); | |
2399 | ||
2400 | if (!netif_carrier_ok(netdev)) { | |
2401 | if (IGB_DESC_UNUSED(tx_ring) + 1 < tx_ring->count) { | |
2402 | /* We've lost link, so the controller stops DMA, | |
2403 | * but we've got queued Tx work that's never going | |
2404 | * to get done, so reset controller to flush Tx. | |
2405 | * (Do the reset outside of interrupt context). */ | |
2406 | adapter->tx_timeout_count++; | |
2407 | schedule_work(&adapter->reset_task); | |
2408 | } | |
2409 | } | |
2410 | ||
2411 | /* Cause software interrupt to ensure rx ring is cleaned */ | |
7a6ea550 AD |
2412 | if (adapter->msix_entries) { |
2413 | for (i = 0; i < adapter->num_rx_queues; i++) | |
2414 | eics |= adapter->rx_ring[i].eims_value; | |
2415 | wr32(E1000_EICS, eics); | |
2416 | } else { | |
2417 | wr32(E1000_ICS, E1000_ICS_RXDMT0); | |
2418 | } | |
9d5c8243 AK |
2419 | |
2420 | /* Force detection of hung controller every watchdog period */ | |
2421 | tx_ring->detect_tx_hung = true; | |
2422 | ||
2423 | /* Reset the timer */ | |
2424 | if (!test_bit(__IGB_DOWN, &adapter->state)) | |
2425 | mod_timer(&adapter->watchdog_timer, | |
2426 | round_jiffies(jiffies + 2 * HZ)); | |
2427 | } | |
2428 | ||
2429 | enum latency_range { | |
2430 | lowest_latency = 0, | |
2431 | low_latency = 1, | |
2432 | bulk_latency = 2, | |
2433 | latency_invalid = 255 | |
2434 | }; | |
2435 | ||
2436 | ||
6eb5a7f1 AD |
2437 | /** |
2438 | * igb_update_ring_itr - update the dynamic ITR value based on packet size | |
2439 | * | |
2440 | * Stores a new ITR value based on strictly on packet size. This | |
2441 | * algorithm is less sophisticated than that used in igb_update_itr, | |
2442 | * due to the difficulty of synchronizing statistics across multiple | |
2443 | * receive rings. The divisors and thresholds used by this fuction | |
2444 | * were determined based on theoretical maximum wire speed and testing | |
2445 | * data, in order to minimize response time while increasing bulk | |
2446 | * throughput. | |
2447 | * This functionality is controlled by the InterruptThrottleRate module | |
2448 | * parameter (see igb_param.c) | |
2449 | * NOTE: This function is called only when operating in a multiqueue | |
2450 | * receive environment. | |
2451 | * @rx_ring: pointer to ring | |
2452 | **/ | |
2453 | static void igb_update_ring_itr(struct igb_ring *rx_ring) | |
9d5c8243 | 2454 | { |
6eb5a7f1 AD |
2455 | int new_val = rx_ring->itr_val; |
2456 | int avg_wire_size = 0; | |
2457 | struct igb_adapter *adapter = rx_ring->adapter; | |
9d5c8243 | 2458 | |
6eb5a7f1 AD |
2459 | if (!rx_ring->total_packets) |
2460 | goto clear_counts; /* no packets, so don't do anything */ | |
9d5c8243 | 2461 | |
6eb5a7f1 AD |
2462 | /* For non-gigabit speeds, just fix the interrupt rate at 4000 |
2463 | * ints/sec - ITR timer value of 120 ticks. | |
2464 | */ | |
2465 | if (adapter->link_speed != SPEED_1000) { | |
2466 | new_val = 120; | |
2467 | goto set_itr_val; | |
9d5c8243 | 2468 | } |
6eb5a7f1 | 2469 | avg_wire_size = rx_ring->total_bytes / rx_ring->total_packets; |
9d5c8243 | 2470 | |
6eb5a7f1 AD |
2471 | /* Add 24 bytes to size to account for CRC, preamble, and gap */ |
2472 | avg_wire_size += 24; | |
2473 | ||
2474 | /* Don't starve jumbo frames */ | |
2475 | avg_wire_size = min(avg_wire_size, 3000); | |
9d5c8243 | 2476 | |
6eb5a7f1 AD |
2477 | /* Give a little boost to mid-size frames */ |
2478 | if ((avg_wire_size > 300) && (avg_wire_size < 1200)) | |
2479 | new_val = avg_wire_size / 3; | |
2480 | else | |
2481 | new_val = avg_wire_size / 2; | |
9d5c8243 | 2482 | |
6eb5a7f1 | 2483 | set_itr_val: |
9d5c8243 AK |
2484 | if (new_val != rx_ring->itr_val) { |
2485 | rx_ring->itr_val = new_val; | |
6eb5a7f1 | 2486 | rx_ring->set_itr = 1; |
9d5c8243 | 2487 | } |
6eb5a7f1 AD |
2488 | clear_counts: |
2489 | rx_ring->total_bytes = 0; | |
2490 | rx_ring->total_packets = 0; | |
9d5c8243 AK |
2491 | } |
2492 | ||
2493 | /** | |
2494 | * igb_update_itr - update the dynamic ITR value based on statistics | |
2495 | * Stores a new ITR value based on packets and byte | |
2496 | * counts during the last interrupt. The advantage of per interrupt | |
2497 | * computation is faster updates and more accurate ITR for the current | |
2498 | * traffic pattern. Constants in this function were computed | |
2499 | * based on theoretical maximum wire speed and thresholds were set based | |
2500 | * on testing data as well as attempting to minimize response time | |
2501 | * while increasing bulk throughput. | |
2502 | * this functionality is controlled by the InterruptThrottleRate module | |
2503 | * parameter (see igb_param.c) | |
2504 | * NOTE: These calculations are only valid when operating in a single- | |
2505 | * queue environment. | |
2506 | * @adapter: pointer to adapter | |
2507 | * @itr_setting: current adapter->itr | |
2508 | * @packets: the number of packets during this measurement interval | |
2509 | * @bytes: the number of bytes during this measurement interval | |
2510 | **/ | |
2511 | static unsigned int igb_update_itr(struct igb_adapter *adapter, u16 itr_setting, | |
2512 | int packets, int bytes) | |
2513 | { | |
2514 | unsigned int retval = itr_setting; | |
2515 | ||
2516 | if (packets == 0) | |
2517 | goto update_itr_done; | |
2518 | ||
2519 | switch (itr_setting) { | |
2520 | case lowest_latency: | |
2521 | /* handle TSO and jumbo frames */ | |
2522 | if (bytes/packets > 8000) | |
2523 | retval = bulk_latency; | |
2524 | else if ((packets < 5) && (bytes > 512)) | |
2525 | retval = low_latency; | |
2526 | break; | |
2527 | case low_latency: /* 50 usec aka 20000 ints/s */ | |
2528 | if (bytes > 10000) { | |
2529 | /* this if handles the TSO accounting */ | |
2530 | if (bytes/packets > 8000) { | |
2531 | retval = bulk_latency; | |
2532 | } else if ((packets < 10) || ((bytes/packets) > 1200)) { | |
2533 | retval = bulk_latency; | |
2534 | } else if ((packets > 35)) { | |
2535 | retval = lowest_latency; | |
2536 | } | |
2537 | } else if (bytes/packets > 2000) { | |
2538 | retval = bulk_latency; | |
2539 | } else if (packets <= 2 && bytes < 512) { | |
2540 | retval = lowest_latency; | |
2541 | } | |
2542 | break; | |
2543 | case bulk_latency: /* 250 usec aka 4000 ints/s */ | |
2544 | if (bytes > 25000) { | |
2545 | if (packets > 35) | |
2546 | retval = low_latency; | |
2547 | } else if (bytes < 6000) { | |
2548 | retval = low_latency; | |
2549 | } | |
2550 | break; | |
2551 | } | |
2552 | ||
2553 | update_itr_done: | |
2554 | return retval; | |
2555 | } | |
2556 | ||
6eb5a7f1 | 2557 | static void igb_set_itr(struct igb_adapter *adapter) |
9d5c8243 AK |
2558 | { |
2559 | u16 current_itr; | |
2560 | u32 new_itr = adapter->itr; | |
2561 | ||
2562 | /* for non-gigabit speeds, just fix the interrupt rate at 4000 */ | |
2563 | if (adapter->link_speed != SPEED_1000) { | |
2564 | current_itr = 0; | |
2565 | new_itr = 4000; | |
2566 | goto set_itr_now; | |
2567 | } | |
2568 | ||
2569 | adapter->rx_itr = igb_update_itr(adapter, | |
2570 | adapter->rx_itr, | |
2571 | adapter->rx_ring->total_packets, | |
2572 | adapter->rx_ring->total_bytes); | |
9d5c8243 | 2573 | |
6eb5a7f1 | 2574 | if (adapter->rx_ring->buddy) { |
9d5c8243 AK |
2575 | adapter->tx_itr = igb_update_itr(adapter, |
2576 | adapter->tx_itr, | |
2577 | adapter->tx_ring->total_packets, | |
2578 | adapter->tx_ring->total_bytes); | |
9d5c8243 AK |
2579 | |
2580 | current_itr = max(adapter->rx_itr, adapter->tx_itr); | |
2581 | } else { | |
2582 | current_itr = adapter->rx_itr; | |
2583 | } | |
2584 | ||
6eb5a7f1 AD |
2585 | /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
2586 | if (adapter->itr_setting == 3 && | |
2587 | current_itr == lowest_latency) | |
2588 | current_itr = low_latency; | |
2589 | ||
9d5c8243 AK |
2590 | switch (current_itr) { |
2591 | /* counts and packets in update_itr are dependent on these numbers */ | |
2592 | case lowest_latency: | |
2593 | new_itr = 70000; | |
2594 | break; | |
2595 | case low_latency: | |
2596 | new_itr = 20000; /* aka hwitr = ~200 */ | |
2597 | break; | |
2598 | case bulk_latency: | |
2599 | new_itr = 4000; | |
2600 | break; | |
2601 | default: | |
2602 | break; | |
2603 | } | |
2604 | ||
2605 | set_itr_now: | |
6eb5a7f1 AD |
2606 | adapter->rx_ring->total_bytes = 0; |
2607 | adapter->rx_ring->total_packets = 0; | |
2608 | if (adapter->rx_ring->buddy) { | |
2609 | adapter->rx_ring->buddy->total_bytes = 0; | |
2610 | adapter->rx_ring->buddy->total_packets = 0; | |
2611 | } | |
2612 | ||
9d5c8243 AK |
2613 | if (new_itr != adapter->itr) { |
2614 | /* this attempts to bias the interrupt rate towards Bulk | |
2615 | * by adding intermediate steps when interrupt rate is | |
2616 | * increasing */ | |
2617 | new_itr = new_itr > adapter->itr ? | |
2618 | min(adapter->itr + (new_itr >> 2), new_itr) : | |
2619 | new_itr; | |
2620 | /* Don't write the value here; it resets the adapter's | |
2621 | * internal timer, and causes us to delay far longer than | |
2622 | * we should between interrupts. Instead, we write the ITR | |
2623 | * value at the beginning of the next interrupt so the timing | |
2624 | * ends up being correct. | |
2625 | */ | |
2626 | adapter->itr = new_itr; | |
6eb5a7f1 AD |
2627 | adapter->rx_ring->itr_val = 1000000000 / (new_itr * 256); |
2628 | adapter->rx_ring->set_itr = 1; | |
9d5c8243 AK |
2629 | } |
2630 | ||
2631 | return; | |
2632 | } | |
2633 | ||
2634 | ||
2635 | #define IGB_TX_FLAGS_CSUM 0x00000001 | |
2636 | #define IGB_TX_FLAGS_VLAN 0x00000002 | |
2637 | #define IGB_TX_FLAGS_TSO 0x00000004 | |
2638 | #define IGB_TX_FLAGS_IPV4 0x00000008 | |
2639 | #define IGB_TX_FLAGS_VLAN_MASK 0xffff0000 | |
2640 | #define IGB_TX_FLAGS_VLAN_SHIFT 16 | |
2641 | ||
2642 | static inline int igb_tso_adv(struct igb_adapter *adapter, | |
2643 | struct igb_ring *tx_ring, | |
2644 | struct sk_buff *skb, u32 tx_flags, u8 *hdr_len) | |
2645 | { | |
2646 | struct e1000_adv_tx_context_desc *context_desc; | |
2647 | unsigned int i; | |
2648 | int err; | |
2649 | struct igb_buffer *buffer_info; | |
2650 | u32 info = 0, tu_cmd = 0; | |
2651 | u32 mss_l4len_idx, l4len; | |
2652 | *hdr_len = 0; | |
2653 | ||
2654 | if (skb_header_cloned(skb)) { | |
2655 | err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); | |
2656 | if (err) | |
2657 | return err; | |
2658 | } | |
2659 | ||
2660 | l4len = tcp_hdrlen(skb); | |
2661 | *hdr_len += l4len; | |
2662 | ||
2663 | if (skb->protocol == htons(ETH_P_IP)) { | |
2664 | struct iphdr *iph = ip_hdr(skb); | |
2665 | iph->tot_len = 0; | |
2666 | iph->check = 0; | |
2667 | tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, | |
2668 | iph->daddr, 0, | |
2669 | IPPROTO_TCP, | |
2670 | 0); | |
2671 | } else if (skb_shinfo(skb)->gso_type == SKB_GSO_TCPV6) { | |
2672 | ipv6_hdr(skb)->payload_len = 0; | |
2673 | tcp_hdr(skb)->check = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, | |
2674 | &ipv6_hdr(skb)->daddr, | |
2675 | 0, IPPROTO_TCP, 0); | |
2676 | } | |
2677 | ||
2678 | i = tx_ring->next_to_use; | |
2679 | ||
2680 | buffer_info = &tx_ring->buffer_info[i]; | |
2681 | context_desc = E1000_TX_CTXTDESC_ADV(*tx_ring, i); | |
2682 | /* VLAN MACLEN IPLEN */ | |
2683 | if (tx_flags & IGB_TX_FLAGS_VLAN) | |
2684 | info |= (tx_flags & IGB_TX_FLAGS_VLAN_MASK); | |
2685 | info |= (skb_network_offset(skb) << E1000_ADVTXD_MACLEN_SHIFT); | |
2686 | *hdr_len += skb_network_offset(skb); | |
2687 | info |= skb_network_header_len(skb); | |
2688 | *hdr_len += skb_network_header_len(skb); | |
2689 | context_desc->vlan_macip_lens = cpu_to_le32(info); | |
2690 | ||
2691 | /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */ | |
2692 | tu_cmd |= (E1000_TXD_CMD_DEXT | E1000_ADVTXD_DTYP_CTXT); | |
2693 | ||
2694 | if (skb->protocol == htons(ETH_P_IP)) | |
2695 | tu_cmd |= E1000_ADVTXD_TUCMD_IPV4; | |
2696 | tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP; | |
2697 | ||
2698 | context_desc->type_tucmd_mlhl = cpu_to_le32(tu_cmd); | |
2699 | ||
2700 | /* MSS L4LEN IDX */ | |
2701 | mss_l4len_idx = (skb_shinfo(skb)->gso_size << E1000_ADVTXD_MSS_SHIFT); | |
2702 | mss_l4len_idx |= (l4len << E1000_ADVTXD_L4LEN_SHIFT); | |
2703 | ||
7dfc16fa AD |
2704 | /* Context index must be unique per ring. */ |
2705 | if (adapter->flags & IGB_FLAG_NEED_CTX_IDX) | |
2706 | mss_l4len_idx |= tx_ring->queue_index << 4; | |
9d5c8243 AK |
2707 | |
2708 | context_desc->mss_l4len_idx = cpu_to_le32(mss_l4len_idx); | |
2709 | context_desc->seqnum_seed = 0; | |
2710 | ||
2711 | buffer_info->time_stamp = jiffies; | |
0e014cb1 | 2712 | buffer_info->next_to_watch = i; |
9d5c8243 AK |
2713 | buffer_info->dma = 0; |
2714 | i++; | |
2715 | if (i == tx_ring->count) | |
2716 | i = 0; | |
2717 | ||
2718 | tx_ring->next_to_use = i; | |
2719 | ||
2720 | return true; | |
2721 | } | |
2722 | ||
2723 | static inline bool igb_tx_csum_adv(struct igb_adapter *adapter, | |
2724 | struct igb_ring *tx_ring, | |
2725 | struct sk_buff *skb, u32 tx_flags) | |
2726 | { | |
2727 | struct e1000_adv_tx_context_desc *context_desc; | |
2728 | unsigned int i; | |
2729 | struct igb_buffer *buffer_info; | |
2730 | u32 info = 0, tu_cmd = 0; | |
2731 | ||
2732 | if ((skb->ip_summed == CHECKSUM_PARTIAL) || | |
2733 | (tx_flags & IGB_TX_FLAGS_VLAN)) { | |
2734 | i = tx_ring->next_to_use; | |
2735 | buffer_info = &tx_ring->buffer_info[i]; | |
2736 | context_desc = E1000_TX_CTXTDESC_ADV(*tx_ring, i); | |
2737 | ||
2738 | if (tx_flags & IGB_TX_FLAGS_VLAN) | |
2739 | info |= (tx_flags & IGB_TX_FLAGS_VLAN_MASK); | |
2740 | info |= (skb_network_offset(skb) << E1000_ADVTXD_MACLEN_SHIFT); | |
2741 | if (skb->ip_summed == CHECKSUM_PARTIAL) | |
2742 | info |= skb_network_header_len(skb); | |
2743 | ||
2744 | context_desc->vlan_macip_lens = cpu_to_le32(info); | |
2745 | ||
2746 | tu_cmd |= (E1000_TXD_CMD_DEXT | E1000_ADVTXD_DTYP_CTXT); | |
2747 | ||
2748 | if (skb->ip_summed == CHECKSUM_PARTIAL) { | |
44b0cda3 | 2749 | switch (skb->protocol) { |
09640e63 | 2750 | case cpu_to_be16(ETH_P_IP): |
9d5c8243 | 2751 | tu_cmd |= E1000_ADVTXD_TUCMD_IPV4; |
44b0cda3 MW |
2752 | if (ip_hdr(skb)->protocol == IPPROTO_TCP) |
2753 | tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP; | |
2754 | break; | |
09640e63 | 2755 | case cpu_to_be16(ETH_P_IPV6): |
44b0cda3 MW |
2756 | /* XXX what about other V6 headers?? */ |
2757 | if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP) | |
2758 | tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP; | |
2759 | break; | |
2760 | default: | |
2761 | if (unlikely(net_ratelimit())) | |
2762 | dev_warn(&adapter->pdev->dev, | |
2763 | "partial checksum but proto=%x!\n", | |
2764 | skb->protocol); | |
2765 | break; | |
2766 | } | |
9d5c8243 AK |
2767 | } |
2768 | ||
2769 | context_desc->type_tucmd_mlhl = cpu_to_le32(tu_cmd); | |
2770 | context_desc->seqnum_seed = 0; | |
7dfc16fa AD |
2771 | if (adapter->flags & IGB_FLAG_NEED_CTX_IDX) |
2772 | context_desc->mss_l4len_idx = | |
2773 | cpu_to_le32(tx_ring->queue_index << 4); | |
9d5c8243 AK |
2774 | |
2775 | buffer_info->time_stamp = jiffies; | |
0e014cb1 | 2776 | buffer_info->next_to_watch = i; |
9d5c8243 AK |
2777 | buffer_info->dma = 0; |
2778 | ||
2779 | i++; | |
2780 | if (i == tx_ring->count) | |
2781 | i = 0; | |
2782 | tx_ring->next_to_use = i; | |
2783 | ||
2784 | return true; | |
2785 | } | |
2786 | ||
2787 | ||
2788 | return false; | |
2789 | } | |
2790 | ||
2791 | #define IGB_MAX_TXD_PWR 16 | |
2792 | #define IGB_MAX_DATA_PER_TXD (1<<IGB_MAX_TXD_PWR) | |
2793 | ||
2794 | static inline int igb_tx_map_adv(struct igb_adapter *adapter, | |
0e014cb1 AD |
2795 | struct igb_ring *tx_ring, struct sk_buff *skb, |
2796 | unsigned int first) | |
9d5c8243 AK |
2797 | { |
2798 | struct igb_buffer *buffer_info; | |
2799 | unsigned int len = skb_headlen(skb); | |
2800 | unsigned int count = 0, i; | |
2801 | unsigned int f; | |
2802 | ||
2803 | i = tx_ring->next_to_use; | |
2804 | ||
2805 | buffer_info = &tx_ring->buffer_info[i]; | |
2806 | BUG_ON(len >= IGB_MAX_DATA_PER_TXD); | |
2807 | buffer_info->length = len; | |
2808 | /* set time_stamp *before* dma to help avoid a possible race */ | |
2809 | buffer_info->time_stamp = jiffies; | |
0e014cb1 | 2810 | buffer_info->next_to_watch = i; |
9d5c8243 AK |
2811 | buffer_info->dma = pci_map_single(adapter->pdev, skb->data, len, |
2812 | PCI_DMA_TODEVICE); | |
2813 | count++; | |
2814 | i++; | |
2815 | if (i == tx_ring->count) | |
2816 | i = 0; | |
2817 | ||
2818 | for (f = 0; f < skb_shinfo(skb)->nr_frags; f++) { | |
2819 | struct skb_frag_struct *frag; | |
2820 | ||
2821 | frag = &skb_shinfo(skb)->frags[f]; | |
2822 | len = frag->size; | |
2823 | ||
2824 | buffer_info = &tx_ring->buffer_info[i]; | |
2825 | BUG_ON(len >= IGB_MAX_DATA_PER_TXD); | |
2826 | buffer_info->length = len; | |
2827 | buffer_info->time_stamp = jiffies; | |
0e014cb1 | 2828 | buffer_info->next_to_watch = i; |
9d5c8243 AK |
2829 | buffer_info->dma = pci_map_page(adapter->pdev, |
2830 | frag->page, | |
2831 | frag->page_offset, | |
2832 | len, | |
2833 | PCI_DMA_TODEVICE); | |
2834 | ||
2835 | count++; | |
2836 | i++; | |
2837 | if (i == tx_ring->count) | |
2838 | i = 0; | |
2839 | } | |
2840 | ||
0e014cb1 | 2841 | i = ((i == 0) ? tx_ring->count - 1 : i - 1); |
9d5c8243 | 2842 | tx_ring->buffer_info[i].skb = skb; |
0e014cb1 | 2843 | tx_ring->buffer_info[first].next_to_watch = i; |
9d5c8243 AK |
2844 | |
2845 | return count; | |
2846 | } | |
2847 | ||
2848 | static inline void igb_tx_queue_adv(struct igb_adapter *adapter, | |
2849 | struct igb_ring *tx_ring, | |
2850 | int tx_flags, int count, u32 paylen, | |
2851 | u8 hdr_len) | |
2852 | { | |
2853 | union e1000_adv_tx_desc *tx_desc = NULL; | |
2854 | struct igb_buffer *buffer_info; | |
2855 | u32 olinfo_status = 0, cmd_type_len; | |
2856 | unsigned int i; | |
2857 | ||
2858 | cmd_type_len = (E1000_ADVTXD_DTYP_DATA | E1000_ADVTXD_DCMD_IFCS | | |
2859 | E1000_ADVTXD_DCMD_DEXT); | |
2860 | ||
2861 | if (tx_flags & IGB_TX_FLAGS_VLAN) | |
2862 | cmd_type_len |= E1000_ADVTXD_DCMD_VLE; | |
2863 | ||
2864 | if (tx_flags & IGB_TX_FLAGS_TSO) { | |
2865 | cmd_type_len |= E1000_ADVTXD_DCMD_TSE; | |
2866 | ||
2867 | /* insert tcp checksum */ | |
2868 | olinfo_status |= E1000_TXD_POPTS_TXSM << 8; | |
2869 | ||
2870 | /* insert ip checksum */ | |
2871 | if (tx_flags & IGB_TX_FLAGS_IPV4) | |
2872 | olinfo_status |= E1000_TXD_POPTS_IXSM << 8; | |
2873 | ||
2874 | } else if (tx_flags & IGB_TX_FLAGS_CSUM) { | |
2875 | olinfo_status |= E1000_TXD_POPTS_TXSM << 8; | |
2876 | } | |
2877 | ||
7dfc16fa AD |
2878 | if ((adapter->flags & IGB_FLAG_NEED_CTX_IDX) && |
2879 | (tx_flags & (IGB_TX_FLAGS_CSUM | IGB_TX_FLAGS_TSO | | |
2880 | IGB_TX_FLAGS_VLAN))) | |
661086df | 2881 | olinfo_status |= tx_ring->queue_index << 4; |
9d5c8243 AK |
2882 | |
2883 | olinfo_status |= ((paylen - hdr_len) << E1000_ADVTXD_PAYLEN_SHIFT); | |
2884 | ||
2885 | i = tx_ring->next_to_use; | |
2886 | while (count--) { | |
2887 | buffer_info = &tx_ring->buffer_info[i]; | |
2888 | tx_desc = E1000_TX_DESC_ADV(*tx_ring, i); | |
2889 | tx_desc->read.buffer_addr = cpu_to_le64(buffer_info->dma); | |
2890 | tx_desc->read.cmd_type_len = | |
2891 | cpu_to_le32(cmd_type_len | buffer_info->length); | |
2892 | tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status); | |
2893 | i++; | |
2894 | if (i == tx_ring->count) | |
2895 | i = 0; | |
2896 | } | |
2897 | ||
2898 | tx_desc->read.cmd_type_len |= cpu_to_le32(adapter->txd_cmd); | |
2899 | /* Force memory writes to complete before letting h/w | |
2900 | * know there are new descriptors to fetch. (Only | |
2901 | * applicable for weak-ordered memory model archs, | |
2902 | * such as IA-64). */ | |
2903 | wmb(); | |
2904 | ||
2905 | tx_ring->next_to_use = i; | |
2906 | writel(i, adapter->hw.hw_addr + tx_ring->tail); | |
2907 | /* we need this if more than one processor can write to our tail | |
2908 | * at a time, it syncronizes IO on IA64/Altix systems */ | |
2909 | mmiowb(); | |
2910 | } | |
2911 | ||
2912 | static int __igb_maybe_stop_tx(struct net_device *netdev, | |
2913 | struct igb_ring *tx_ring, int size) | |
2914 | { | |
2915 | struct igb_adapter *adapter = netdev_priv(netdev); | |
2916 | ||
661086df | 2917 | netif_stop_subqueue(netdev, tx_ring->queue_index); |
661086df | 2918 | |
9d5c8243 AK |
2919 | /* Herbert's original patch had: |
2920 | * smp_mb__after_netif_stop_queue(); | |
2921 | * but since that doesn't exist yet, just open code it. */ | |
2922 | smp_mb(); | |
2923 | ||
2924 | /* We need to check again in a case another CPU has just | |
2925 | * made room available. */ | |
2926 | if (IGB_DESC_UNUSED(tx_ring) < size) | |
2927 | return -EBUSY; | |
2928 | ||
2929 | /* A reprieve! */ | |
661086df | 2930 | netif_wake_subqueue(netdev, tx_ring->queue_index); |
9d5c8243 AK |
2931 | ++adapter->restart_queue; |
2932 | return 0; | |
2933 | } | |
2934 | ||
2935 | static int igb_maybe_stop_tx(struct net_device *netdev, | |
2936 | struct igb_ring *tx_ring, int size) | |
2937 | { | |
2938 | if (IGB_DESC_UNUSED(tx_ring) >= size) | |
2939 | return 0; | |
2940 | return __igb_maybe_stop_tx(netdev, tx_ring, size); | |
2941 | } | |
2942 | ||
2943 | #define TXD_USE_COUNT(S) (((S) >> (IGB_MAX_TXD_PWR)) + 1) | |
2944 | ||
2945 | static int igb_xmit_frame_ring_adv(struct sk_buff *skb, | |
2946 | struct net_device *netdev, | |
2947 | struct igb_ring *tx_ring) | |
2948 | { | |
2949 | struct igb_adapter *adapter = netdev_priv(netdev); | |
0e014cb1 | 2950 | unsigned int first; |
9d5c8243 AK |
2951 | unsigned int tx_flags = 0; |
2952 | unsigned int len; | |
9d5c8243 AK |
2953 | u8 hdr_len = 0; |
2954 | int tso = 0; | |
2955 | ||
2956 | len = skb_headlen(skb); | |
2957 | ||
2958 | if (test_bit(__IGB_DOWN, &adapter->state)) { | |
2959 | dev_kfree_skb_any(skb); | |
2960 | return NETDEV_TX_OK; | |
2961 | } | |
2962 | ||
2963 | if (skb->len <= 0) { | |
2964 | dev_kfree_skb_any(skb); | |
2965 | return NETDEV_TX_OK; | |
2966 | } | |
2967 | ||
9d5c8243 AK |
2968 | /* need: 1 descriptor per page, |
2969 | * + 2 desc gap to keep tail from touching head, | |
2970 | * + 1 desc for skb->data, | |
2971 | * + 1 desc for context descriptor, | |
2972 | * otherwise try next time */ | |
2973 | if (igb_maybe_stop_tx(netdev, tx_ring, skb_shinfo(skb)->nr_frags + 4)) { | |
2974 | /* this is a hard error */ | |
9d5c8243 AK |
2975 | return NETDEV_TX_BUSY; |
2976 | } | |
6eb5a7f1 | 2977 | skb_orphan(skb); |
9d5c8243 AK |
2978 | |
2979 | if (adapter->vlgrp && vlan_tx_tag_present(skb)) { | |
2980 | tx_flags |= IGB_TX_FLAGS_VLAN; | |
2981 | tx_flags |= (vlan_tx_tag_get(skb) << IGB_TX_FLAGS_VLAN_SHIFT); | |
2982 | } | |
2983 | ||
661086df PWJ |
2984 | if (skb->protocol == htons(ETH_P_IP)) |
2985 | tx_flags |= IGB_TX_FLAGS_IPV4; | |
2986 | ||
0e014cb1 AD |
2987 | first = tx_ring->next_to_use; |
2988 | ||
9d5c8243 AK |
2989 | tso = skb_is_gso(skb) ? igb_tso_adv(adapter, tx_ring, skb, tx_flags, |
2990 | &hdr_len) : 0; | |
2991 | ||
2992 | if (tso < 0) { | |
2993 | dev_kfree_skb_any(skb); | |
9d5c8243 AK |
2994 | return NETDEV_TX_OK; |
2995 | } | |
2996 | ||
2997 | if (tso) | |
2998 | tx_flags |= IGB_TX_FLAGS_TSO; | |
2999 | else if (igb_tx_csum_adv(adapter, tx_ring, skb, tx_flags)) | |
3000 | if (skb->ip_summed == CHECKSUM_PARTIAL) | |
3001 | tx_flags |= IGB_TX_FLAGS_CSUM; | |
3002 | ||
9d5c8243 | 3003 | igb_tx_queue_adv(adapter, tx_ring, tx_flags, |
0e014cb1 | 3004 | igb_tx_map_adv(adapter, tx_ring, skb, first), |
9d5c8243 AK |
3005 | skb->len, hdr_len); |
3006 | ||
3007 | netdev->trans_start = jiffies; | |
3008 | ||
3009 | /* Make sure there is space in the ring for the next send. */ | |
3010 | igb_maybe_stop_tx(netdev, tx_ring, MAX_SKB_FRAGS + 4); | |
3011 | ||
9d5c8243 AK |
3012 | return NETDEV_TX_OK; |
3013 | } | |
3014 | ||
3015 | static int igb_xmit_frame_adv(struct sk_buff *skb, struct net_device *netdev) | |
3016 | { | |
3017 | struct igb_adapter *adapter = netdev_priv(netdev); | |
661086df PWJ |
3018 | struct igb_ring *tx_ring; |
3019 | ||
661086df PWJ |
3020 | int r_idx = 0; |
3021 | r_idx = skb->queue_mapping & (IGB_MAX_TX_QUEUES - 1); | |
3022 | tx_ring = adapter->multi_tx_table[r_idx]; | |
9d5c8243 AK |
3023 | |
3024 | /* This goes back to the question of how to logically map a tx queue | |
3025 | * to a flow. Right now, performance is impacted slightly negatively | |
3026 | * if using multiple tx queues. If the stack breaks away from a | |
3027 | * single qdisc implementation, we can look at this again. */ | |
3028 | return (igb_xmit_frame_ring_adv(skb, netdev, tx_ring)); | |
3029 | } | |
3030 | ||
3031 | /** | |
3032 | * igb_tx_timeout - Respond to a Tx Hang | |
3033 | * @netdev: network interface device structure | |
3034 | **/ | |
3035 | static void igb_tx_timeout(struct net_device *netdev) | |
3036 | { | |
3037 | struct igb_adapter *adapter = netdev_priv(netdev); | |
3038 | struct e1000_hw *hw = &adapter->hw; | |
3039 | ||
3040 | /* Do the reset outside of interrupt context */ | |
3041 | adapter->tx_timeout_count++; | |
3042 | schedule_work(&adapter->reset_task); | |
3043 | wr32(E1000_EICS, adapter->eims_enable_mask & | |
3044 | ~(E1000_EIMS_TCP_TIMER | E1000_EIMS_OTHER)); | |
3045 | } | |
3046 | ||
3047 | static void igb_reset_task(struct work_struct *work) | |
3048 | { | |
3049 | struct igb_adapter *adapter; | |
3050 | adapter = container_of(work, struct igb_adapter, reset_task); | |
3051 | ||
3052 | igb_reinit_locked(adapter); | |
3053 | } | |
3054 | ||
3055 | /** | |
3056 | * igb_get_stats - Get System Network Statistics | |
3057 | * @netdev: network interface device structure | |
3058 | * | |
3059 | * Returns the address of the device statistics structure. | |
3060 | * The statistics are actually updated from the timer callback. | |
3061 | **/ | |
3062 | static struct net_device_stats * | |
3063 | igb_get_stats(struct net_device *netdev) | |
3064 | { | |
3065 | struct igb_adapter *adapter = netdev_priv(netdev); | |
3066 | ||
3067 | /* only return the current stats */ | |
3068 | return &adapter->net_stats; | |
3069 | } | |
3070 | ||
3071 | /** | |
3072 | * igb_change_mtu - Change the Maximum Transfer Unit | |
3073 | * @netdev: network interface device structure | |
3074 | * @new_mtu: new value for maximum frame size | |
3075 | * | |
3076 | * Returns 0 on success, negative on failure | |
3077 | **/ | |
3078 | static int igb_change_mtu(struct net_device *netdev, int new_mtu) | |
3079 | { | |
3080 | struct igb_adapter *adapter = netdev_priv(netdev); | |
3081 | int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN; | |
3082 | ||
3083 | if ((max_frame < ETH_ZLEN + ETH_FCS_LEN) || | |
3084 | (max_frame > MAX_JUMBO_FRAME_SIZE)) { | |
3085 | dev_err(&adapter->pdev->dev, "Invalid MTU setting\n"); | |
3086 | return -EINVAL; | |
3087 | } | |
3088 | ||
3089 | #define MAX_STD_JUMBO_FRAME_SIZE 9234 | |
3090 | if (max_frame > MAX_STD_JUMBO_FRAME_SIZE) { | |
3091 | dev_err(&adapter->pdev->dev, "MTU > 9216 not supported.\n"); | |
3092 | return -EINVAL; | |
3093 | } | |
3094 | ||
3095 | while (test_and_set_bit(__IGB_RESETTING, &adapter->state)) | |
3096 | msleep(1); | |
3097 | /* igb_down has a dependency on max_frame_size */ | |
3098 | adapter->max_frame_size = max_frame; | |
3099 | if (netif_running(netdev)) | |
3100 | igb_down(adapter); | |
3101 | ||
3102 | /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN | |
3103 | * means we reserve 2 more, this pushes us to allocate from the next | |
3104 | * larger slab size. | |
3105 | * i.e. RXBUFFER_2048 --> size-4096 slab | |
3106 | */ | |
3107 | ||
3108 | if (max_frame <= IGB_RXBUFFER_256) | |
3109 | adapter->rx_buffer_len = IGB_RXBUFFER_256; | |
3110 | else if (max_frame <= IGB_RXBUFFER_512) | |
3111 | adapter->rx_buffer_len = IGB_RXBUFFER_512; | |
3112 | else if (max_frame <= IGB_RXBUFFER_1024) | |
3113 | adapter->rx_buffer_len = IGB_RXBUFFER_1024; | |
3114 | else if (max_frame <= IGB_RXBUFFER_2048) | |
3115 | adapter->rx_buffer_len = IGB_RXBUFFER_2048; | |
3116 | else | |
bf36c1a0 AD |
3117 | #if (PAGE_SIZE / 2) > IGB_RXBUFFER_16384 |
3118 | adapter->rx_buffer_len = IGB_RXBUFFER_16384; | |
3119 | #else | |
3120 | adapter->rx_buffer_len = PAGE_SIZE / 2; | |
3121 | #endif | |
9d5c8243 AK |
3122 | /* adjust allocation if LPE protects us, and we aren't using SBP */ |
3123 | if ((max_frame == ETH_FRAME_LEN + ETH_FCS_LEN) || | |
3124 | (max_frame == MAXIMUM_ETHERNET_VLAN_SIZE)) | |
3125 | adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE; | |
3126 | ||
3127 | dev_info(&adapter->pdev->dev, "changing MTU from %d to %d\n", | |
3128 | netdev->mtu, new_mtu); | |
3129 | netdev->mtu = new_mtu; | |
3130 | ||
3131 | if (netif_running(netdev)) | |
3132 | igb_up(adapter); | |
3133 | else | |
3134 | igb_reset(adapter); | |
3135 | ||
3136 | clear_bit(__IGB_RESETTING, &adapter->state); | |
3137 | ||
3138 | return 0; | |
3139 | } | |
3140 | ||
3141 | /** | |
3142 | * igb_update_stats - Update the board statistics counters | |
3143 | * @adapter: board private structure | |
3144 | **/ | |
3145 | ||
3146 | void igb_update_stats(struct igb_adapter *adapter) | |
3147 | { | |
3148 | struct e1000_hw *hw = &adapter->hw; | |
3149 | struct pci_dev *pdev = adapter->pdev; | |
3150 | u16 phy_tmp; | |
3151 | ||
3152 | #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF | |
3153 | ||
3154 | /* | |
3155 | * Prevent stats update while adapter is being reset, or if the pci | |
3156 | * connection is down. | |
3157 | */ | |
3158 | if (adapter->link_speed == 0) | |
3159 | return; | |
3160 | if (pci_channel_offline(pdev)) | |
3161 | return; | |
3162 | ||
3163 | adapter->stats.crcerrs += rd32(E1000_CRCERRS); | |
3164 | adapter->stats.gprc += rd32(E1000_GPRC); | |
3165 | adapter->stats.gorc += rd32(E1000_GORCL); | |
3166 | rd32(E1000_GORCH); /* clear GORCL */ | |
3167 | adapter->stats.bprc += rd32(E1000_BPRC); | |
3168 | adapter->stats.mprc += rd32(E1000_MPRC); | |
3169 | adapter->stats.roc += rd32(E1000_ROC); | |
3170 | ||
3171 | adapter->stats.prc64 += rd32(E1000_PRC64); | |
3172 | adapter->stats.prc127 += rd32(E1000_PRC127); | |
3173 | adapter->stats.prc255 += rd32(E1000_PRC255); | |
3174 | adapter->stats.prc511 += rd32(E1000_PRC511); | |
3175 | adapter->stats.prc1023 += rd32(E1000_PRC1023); | |
3176 | adapter->stats.prc1522 += rd32(E1000_PRC1522); | |
3177 | adapter->stats.symerrs += rd32(E1000_SYMERRS); | |
3178 | adapter->stats.sec += rd32(E1000_SEC); | |
3179 | ||
3180 | adapter->stats.mpc += rd32(E1000_MPC); | |
3181 | adapter->stats.scc += rd32(E1000_SCC); | |
3182 | adapter->stats.ecol += rd32(E1000_ECOL); | |
3183 | adapter->stats.mcc += rd32(E1000_MCC); | |
3184 | adapter->stats.latecol += rd32(E1000_LATECOL); | |
3185 | adapter->stats.dc += rd32(E1000_DC); | |
3186 | adapter->stats.rlec += rd32(E1000_RLEC); | |
3187 | adapter->stats.xonrxc += rd32(E1000_XONRXC); | |
3188 | adapter->stats.xontxc += rd32(E1000_XONTXC); | |
3189 | adapter->stats.xoffrxc += rd32(E1000_XOFFRXC); | |
3190 | adapter->stats.xofftxc += rd32(E1000_XOFFTXC); | |
3191 | adapter->stats.fcruc += rd32(E1000_FCRUC); | |
3192 | adapter->stats.gptc += rd32(E1000_GPTC); | |
3193 | adapter->stats.gotc += rd32(E1000_GOTCL); | |
3194 | rd32(E1000_GOTCH); /* clear GOTCL */ | |
3195 | adapter->stats.rnbc += rd32(E1000_RNBC); | |
3196 | adapter->stats.ruc += rd32(E1000_RUC); | |
3197 | adapter->stats.rfc += rd32(E1000_RFC); | |
3198 | adapter->stats.rjc += rd32(E1000_RJC); | |
3199 | adapter->stats.tor += rd32(E1000_TORH); | |
3200 | adapter->stats.tot += rd32(E1000_TOTH); | |
3201 | adapter->stats.tpr += rd32(E1000_TPR); | |
3202 | ||
3203 | adapter->stats.ptc64 += rd32(E1000_PTC64); | |
3204 | adapter->stats.ptc127 += rd32(E1000_PTC127); | |
3205 | adapter->stats.ptc255 += rd32(E1000_PTC255); | |
3206 | adapter->stats.ptc511 += rd32(E1000_PTC511); | |
3207 | adapter->stats.ptc1023 += rd32(E1000_PTC1023); | |
3208 | adapter->stats.ptc1522 += rd32(E1000_PTC1522); | |
3209 | ||
3210 | adapter->stats.mptc += rd32(E1000_MPTC); | |
3211 | adapter->stats.bptc += rd32(E1000_BPTC); | |
3212 | ||
3213 | /* used for adaptive IFS */ | |
3214 | ||
3215 | hw->mac.tx_packet_delta = rd32(E1000_TPT); | |
3216 | adapter->stats.tpt += hw->mac.tx_packet_delta; | |
3217 | hw->mac.collision_delta = rd32(E1000_COLC); | |
3218 | adapter->stats.colc += hw->mac.collision_delta; | |
3219 | ||
3220 | adapter->stats.algnerrc += rd32(E1000_ALGNERRC); | |
3221 | adapter->stats.rxerrc += rd32(E1000_RXERRC); | |
3222 | adapter->stats.tncrs += rd32(E1000_TNCRS); | |
3223 | adapter->stats.tsctc += rd32(E1000_TSCTC); | |
3224 | adapter->stats.tsctfc += rd32(E1000_TSCTFC); | |
3225 | ||
3226 | adapter->stats.iac += rd32(E1000_IAC); | |
3227 | adapter->stats.icrxoc += rd32(E1000_ICRXOC); | |
3228 | adapter->stats.icrxptc += rd32(E1000_ICRXPTC); | |
3229 | adapter->stats.icrxatc += rd32(E1000_ICRXATC); | |
3230 | adapter->stats.ictxptc += rd32(E1000_ICTXPTC); | |
3231 | adapter->stats.ictxatc += rd32(E1000_ICTXATC); | |
3232 | adapter->stats.ictxqec += rd32(E1000_ICTXQEC); | |
3233 | adapter->stats.ictxqmtc += rd32(E1000_ICTXQMTC); | |
3234 | adapter->stats.icrxdmtc += rd32(E1000_ICRXDMTC); | |
3235 | ||
3236 | /* Fill out the OS statistics structure */ | |
3237 | adapter->net_stats.multicast = adapter->stats.mprc; | |
3238 | adapter->net_stats.collisions = adapter->stats.colc; | |
3239 | ||
3240 | /* Rx Errors */ | |
3241 | ||
3242 | /* RLEC on some newer hardware can be incorrect so build | |
3243 | * our own version based on RUC and ROC */ | |
3244 | adapter->net_stats.rx_errors = adapter->stats.rxerrc + | |
3245 | adapter->stats.crcerrs + adapter->stats.algnerrc + | |
3246 | adapter->stats.ruc + adapter->stats.roc + | |
3247 | adapter->stats.cexterr; | |
3248 | adapter->net_stats.rx_length_errors = adapter->stats.ruc + | |
3249 | adapter->stats.roc; | |
3250 | adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs; | |
3251 | adapter->net_stats.rx_frame_errors = adapter->stats.algnerrc; | |
3252 | adapter->net_stats.rx_missed_errors = adapter->stats.mpc; | |
3253 | ||
3254 | /* Tx Errors */ | |
3255 | adapter->net_stats.tx_errors = adapter->stats.ecol + | |
3256 | adapter->stats.latecol; | |
3257 | adapter->net_stats.tx_aborted_errors = adapter->stats.ecol; | |
3258 | adapter->net_stats.tx_window_errors = adapter->stats.latecol; | |
3259 | adapter->net_stats.tx_carrier_errors = adapter->stats.tncrs; | |
3260 | ||
3261 | /* Tx Dropped needs to be maintained elsewhere */ | |
3262 | ||
3263 | /* Phy Stats */ | |
3264 | if (hw->phy.media_type == e1000_media_type_copper) { | |
3265 | if ((adapter->link_speed == SPEED_1000) && | |
f5f4cf08 | 3266 | (!igb_read_phy_reg(hw, PHY_1000T_STATUS, |
9d5c8243 AK |
3267 | &phy_tmp))) { |
3268 | phy_tmp &= PHY_IDLE_ERROR_COUNT_MASK; | |
3269 | adapter->phy_stats.idle_errors += phy_tmp; | |
3270 | } | |
3271 | } | |
3272 | ||
3273 | /* Management Stats */ | |
3274 | adapter->stats.mgptc += rd32(E1000_MGTPTC); | |
3275 | adapter->stats.mgprc += rd32(E1000_MGTPRC); | |
3276 | adapter->stats.mgpdc += rd32(E1000_MGTPDC); | |
3277 | } | |
3278 | ||
3279 | ||
3280 | static irqreturn_t igb_msix_other(int irq, void *data) | |
3281 | { | |
3282 | struct net_device *netdev = data; | |
3283 | struct igb_adapter *adapter = netdev_priv(netdev); | |
3284 | struct e1000_hw *hw = &adapter->hw; | |
844290e5 | 3285 | u32 icr = rd32(E1000_ICR); |
9d5c8243 | 3286 | |
844290e5 | 3287 | /* reading ICR causes bit 31 of EICR to be cleared */ |
dda0e083 AD |
3288 | |
3289 | if(icr & E1000_ICR_DOUTSYNC) { | |
3290 | /* HW is reporting DMA is out of sync */ | |
3291 | adapter->stats.doosync++; | |
3292 | } | |
844290e5 PW |
3293 | if (!(icr & E1000_ICR_LSC)) |
3294 | goto no_link_interrupt; | |
3295 | hw->mac.get_link_status = 1; | |
3296 | /* guard against interrupt when we're going down */ | |
3297 | if (!test_bit(__IGB_DOWN, &adapter->state)) | |
3298 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
eebbbdba | 3299 | |
9d5c8243 | 3300 | no_link_interrupt: |
dda0e083 | 3301 | wr32(E1000_IMS, E1000_IMS_LSC | E1000_IMS_DOUTSYNC); |
844290e5 | 3302 | wr32(E1000_EIMS, adapter->eims_other); |
9d5c8243 AK |
3303 | |
3304 | return IRQ_HANDLED; | |
3305 | } | |
3306 | ||
3307 | static irqreturn_t igb_msix_tx(int irq, void *data) | |
3308 | { | |
3309 | struct igb_ring *tx_ring = data; | |
3310 | struct igb_adapter *adapter = tx_ring->adapter; | |
3311 | struct e1000_hw *hw = &adapter->hw; | |
3312 | ||
421e02f0 | 3313 | #ifdef CONFIG_IGB_DCA |
7dfc16fa | 3314 | if (adapter->flags & IGB_FLAG_DCA_ENABLED) |
fe4506b6 JC |
3315 | igb_update_tx_dca(tx_ring); |
3316 | #endif | |
9d5c8243 AK |
3317 | tx_ring->total_bytes = 0; |
3318 | tx_ring->total_packets = 0; | |
661086df PWJ |
3319 | |
3320 | /* auto mask will automatically reenable the interrupt when we write | |
3321 | * EICS */ | |
3b644cf6 | 3322 | if (!igb_clean_tx_irq(tx_ring)) |
9d5c8243 AK |
3323 | /* Ring was not completely cleaned, so fire another interrupt */ |
3324 | wr32(E1000_EICS, tx_ring->eims_value); | |
661086df | 3325 | else |
9d5c8243 | 3326 | wr32(E1000_EIMS, tx_ring->eims_value); |
661086df | 3327 | |
9d5c8243 AK |
3328 | return IRQ_HANDLED; |
3329 | } | |
3330 | ||
6eb5a7f1 AD |
3331 | static void igb_write_itr(struct igb_ring *ring) |
3332 | { | |
3333 | struct e1000_hw *hw = &ring->adapter->hw; | |
3334 | if ((ring->adapter->itr_setting & 3) && ring->set_itr) { | |
3335 | switch (hw->mac.type) { | |
3336 | case e1000_82576: | |
3337 | wr32(ring->itr_register, | |
3338 | ring->itr_val | | |
3339 | 0x80000000); | |
3340 | break; | |
3341 | default: | |
3342 | wr32(ring->itr_register, | |
3343 | ring->itr_val | | |
3344 | (ring->itr_val << 16)); | |
3345 | break; | |
3346 | } | |
3347 | ring->set_itr = 0; | |
3348 | } | |
3349 | } | |
3350 | ||
9d5c8243 AK |
3351 | static irqreturn_t igb_msix_rx(int irq, void *data) |
3352 | { | |
3353 | struct igb_ring *rx_ring = data; | |
9d5c8243 | 3354 | |
844290e5 PW |
3355 | /* Write the ITR value calculated at the end of the |
3356 | * previous interrupt. | |
3357 | */ | |
9d5c8243 | 3358 | |
6eb5a7f1 | 3359 | igb_write_itr(rx_ring); |
9d5c8243 | 3360 | |
288379f0 BH |
3361 | if (napi_schedule_prep(&rx_ring->napi)) |
3362 | __napi_schedule(&rx_ring->napi); | |
844290e5 | 3363 | |
421e02f0 | 3364 | #ifdef CONFIG_IGB_DCA |
8d253320 | 3365 | if (rx_ring->adapter->flags & IGB_FLAG_DCA_ENABLED) |
fe4506b6 JC |
3366 | igb_update_rx_dca(rx_ring); |
3367 | #endif | |
3368 | return IRQ_HANDLED; | |
3369 | } | |
3370 | ||
421e02f0 | 3371 | #ifdef CONFIG_IGB_DCA |
fe4506b6 JC |
3372 | static void igb_update_rx_dca(struct igb_ring *rx_ring) |
3373 | { | |
3374 | u32 dca_rxctrl; | |
3375 | struct igb_adapter *adapter = rx_ring->adapter; | |
3376 | struct e1000_hw *hw = &adapter->hw; | |
3377 | int cpu = get_cpu(); | |
26bc19ec | 3378 | int q = rx_ring->reg_idx; |
fe4506b6 JC |
3379 | |
3380 | if (rx_ring->cpu != cpu) { | |
3381 | dca_rxctrl = rd32(E1000_DCA_RXCTRL(q)); | |
2d064c06 AD |
3382 | if (hw->mac.type == e1000_82576) { |
3383 | dca_rxctrl &= ~E1000_DCA_RXCTRL_CPUID_MASK_82576; | |
3384 | dca_rxctrl |= dca_get_tag(cpu) << | |
3385 | E1000_DCA_RXCTRL_CPUID_SHIFT; | |
3386 | } else { | |
3387 | dca_rxctrl &= ~E1000_DCA_RXCTRL_CPUID_MASK; | |
3388 | dca_rxctrl |= dca_get_tag(cpu); | |
3389 | } | |
fe4506b6 JC |
3390 | dca_rxctrl |= E1000_DCA_RXCTRL_DESC_DCA_EN; |
3391 | dca_rxctrl |= E1000_DCA_RXCTRL_HEAD_DCA_EN; | |
3392 | dca_rxctrl |= E1000_DCA_RXCTRL_DATA_DCA_EN; | |
3393 | wr32(E1000_DCA_RXCTRL(q), dca_rxctrl); | |
3394 | rx_ring->cpu = cpu; | |
3395 | } | |
3396 | put_cpu(); | |
3397 | } | |
3398 | ||
3399 | static void igb_update_tx_dca(struct igb_ring *tx_ring) | |
3400 | { | |
3401 | u32 dca_txctrl; | |
3402 | struct igb_adapter *adapter = tx_ring->adapter; | |
3403 | struct e1000_hw *hw = &adapter->hw; | |
3404 | int cpu = get_cpu(); | |
26bc19ec | 3405 | int q = tx_ring->reg_idx; |
fe4506b6 JC |
3406 | |
3407 | if (tx_ring->cpu != cpu) { | |
3408 | dca_txctrl = rd32(E1000_DCA_TXCTRL(q)); | |
2d064c06 AD |
3409 | if (hw->mac.type == e1000_82576) { |
3410 | dca_txctrl &= ~E1000_DCA_TXCTRL_CPUID_MASK_82576; | |
3411 | dca_txctrl |= dca_get_tag(cpu) << | |
3412 | E1000_DCA_TXCTRL_CPUID_SHIFT; | |
3413 | } else { | |
3414 | dca_txctrl &= ~E1000_DCA_TXCTRL_CPUID_MASK; | |
3415 | dca_txctrl |= dca_get_tag(cpu); | |
3416 | } | |
fe4506b6 JC |
3417 | dca_txctrl |= E1000_DCA_TXCTRL_DESC_DCA_EN; |
3418 | wr32(E1000_DCA_TXCTRL(q), dca_txctrl); | |
3419 | tx_ring->cpu = cpu; | |
3420 | } | |
3421 | put_cpu(); | |
3422 | } | |
3423 | ||
3424 | static void igb_setup_dca(struct igb_adapter *adapter) | |
3425 | { | |
3426 | int i; | |
3427 | ||
7dfc16fa | 3428 | if (!(adapter->flags & IGB_FLAG_DCA_ENABLED)) |
fe4506b6 JC |
3429 | return; |
3430 | ||
3431 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
3432 | adapter->tx_ring[i].cpu = -1; | |
3433 | igb_update_tx_dca(&adapter->tx_ring[i]); | |
3434 | } | |
3435 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
3436 | adapter->rx_ring[i].cpu = -1; | |
3437 | igb_update_rx_dca(&adapter->rx_ring[i]); | |
3438 | } | |
3439 | } | |
3440 | ||
3441 | static int __igb_notify_dca(struct device *dev, void *data) | |
3442 | { | |
3443 | struct net_device *netdev = dev_get_drvdata(dev); | |
3444 | struct igb_adapter *adapter = netdev_priv(netdev); | |
3445 | struct e1000_hw *hw = &adapter->hw; | |
3446 | unsigned long event = *(unsigned long *)data; | |
3447 | ||
3448 | switch (event) { | |
3449 | case DCA_PROVIDER_ADD: | |
3450 | /* if already enabled, don't do it again */ | |
7dfc16fa | 3451 | if (adapter->flags & IGB_FLAG_DCA_ENABLED) |
fe4506b6 | 3452 | break; |
fe4506b6 JC |
3453 | /* Always use CB2 mode, difference is masked |
3454 | * in the CB driver. */ | |
3455 | wr32(E1000_DCA_CTRL, 2); | |
3456 | if (dca_add_requester(dev) == 0) { | |
bbd98fe4 | 3457 | adapter->flags |= IGB_FLAG_DCA_ENABLED; |
fe4506b6 JC |
3458 | dev_info(&adapter->pdev->dev, "DCA enabled\n"); |
3459 | igb_setup_dca(adapter); | |
3460 | break; | |
3461 | } | |
3462 | /* Fall Through since DCA is disabled. */ | |
3463 | case DCA_PROVIDER_REMOVE: | |
7dfc16fa | 3464 | if (adapter->flags & IGB_FLAG_DCA_ENABLED) { |
fe4506b6 JC |
3465 | /* without this a class_device is left |
3466 | * hanging around in the sysfs model */ | |
3467 | dca_remove_requester(dev); | |
3468 | dev_info(&adapter->pdev->dev, "DCA disabled\n"); | |
7dfc16fa | 3469 | adapter->flags &= ~IGB_FLAG_DCA_ENABLED; |
fe4506b6 JC |
3470 | wr32(E1000_DCA_CTRL, 1); |
3471 | } | |
3472 | break; | |
3473 | } | |
bbd98fe4 | 3474 | |
fe4506b6 | 3475 | return 0; |
9d5c8243 AK |
3476 | } |
3477 | ||
fe4506b6 JC |
3478 | static int igb_notify_dca(struct notifier_block *nb, unsigned long event, |
3479 | void *p) | |
3480 | { | |
3481 | int ret_val; | |
3482 | ||
3483 | ret_val = driver_for_each_device(&igb_driver.driver, NULL, &event, | |
3484 | __igb_notify_dca); | |
3485 | ||
3486 | return ret_val ? NOTIFY_BAD : NOTIFY_DONE; | |
3487 | } | |
421e02f0 | 3488 | #endif /* CONFIG_IGB_DCA */ |
9d5c8243 AK |
3489 | |
3490 | /** | |
3491 | * igb_intr_msi - Interrupt Handler | |
3492 | * @irq: interrupt number | |
3493 | * @data: pointer to a network interface device structure | |
3494 | **/ | |
3495 | static irqreturn_t igb_intr_msi(int irq, void *data) | |
3496 | { | |
3497 | struct net_device *netdev = data; | |
3498 | struct igb_adapter *adapter = netdev_priv(netdev); | |
9d5c8243 AK |
3499 | struct e1000_hw *hw = &adapter->hw; |
3500 | /* read ICR disables interrupts using IAM */ | |
3501 | u32 icr = rd32(E1000_ICR); | |
3502 | ||
6eb5a7f1 | 3503 | igb_write_itr(adapter->rx_ring); |
9d5c8243 | 3504 | |
dda0e083 AD |
3505 | if(icr & E1000_ICR_DOUTSYNC) { |
3506 | /* HW is reporting DMA is out of sync */ | |
3507 | adapter->stats.doosync++; | |
3508 | } | |
3509 | ||
9d5c8243 AK |
3510 | if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) { |
3511 | hw->mac.get_link_status = 1; | |
3512 | if (!test_bit(__IGB_DOWN, &adapter->state)) | |
3513 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
3514 | } | |
3515 | ||
288379f0 | 3516 | napi_schedule(&adapter->rx_ring[0].napi); |
9d5c8243 AK |
3517 | |
3518 | return IRQ_HANDLED; | |
3519 | } | |
3520 | ||
3521 | /** | |
4a3c6433 | 3522 | * igb_intr - Legacy Interrupt Handler |
9d5c8243 AK |
3523 | * @irq: interrupt number |
3524 | * @data: pointer to a network interface device structure | |
3525 | **/ | |
3526 | static irqreturn_t igb_intr(int irq, void *data) | |
3527 | { | |
3528 | struct net_device *netdev = data; | |
3529 | struct igb_adapter *adapter = netdev_priv(netdev); | |
9d5c8243 AK |
3530 | struct e1000_hw *hw = &adapter->hw; |
3531 | /* Interrupt Auto-Mask...upon reading ICR, interrupts are masked. No | |
3532 | * need for the IMC write */ | |
3533 | u32 icr = rd32(E1000_ICR); | |
9d5c8243 AK |
3534 | if (!icr) |
3535 | return IRQ_NONE; /* Not our interrupt */ | |
3536 | ||
6eb5a7f1 | 3537 | igb_write_itr(adapter->rx_ring); |
9d5c8243 AK |
3538 | |
3539 | /* IMS will not auto-mask if INT_ASSERTED is not set, and if it is | |
3540 | * not set, then the adapter didn't send an interrupt */ | |
3541 | if (!(icr & E1000_ICR_INT_ASSERTED)) | |
3542 | return IRQ_NONE; | |
3543 | ||
dda0e083 AD |
3544 | if(icr & E1000_ICR_DOUTSYNC) { |
3545 | /* HW is reporting DMA is out of sync */ | |
3546 | adapter->stats.doosync++; | |
3547 | } | |
3548 | ||
9d5c8243 AK |
3549 | if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) { |
3550 | hw->mac.get_link_status = 1; | |
3551 | /* guard against interrupt when we're going down */ | |
3552 | if (!test_bit(__IGB_DOWN, &adapter->state)) | |
3553 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
3554 | } | |
3555 | ||
288379f0 | 3556 | napi_schedule(&adapter->rx_ring[0].napi); |
9d5c8243 AK |
3557 | |
3558 | return IRQ_HANDLED; | |
3559 | } | |
3560 | ||
3561 | /** | |
661086df PWJ |
3562 | * igb_poll - NAPI Rx polling callback |
3563 | * @napi: napi polling structure | |
3564 | * @budget: count of how many packets we should handle | |
9d5c8243 | 3565 | **/ |
661086df | 3566 | static int igb_poll(struct napi_struct *napi, int budget) |
9d5c8243 | 3567 | { |
661086df PWJ |
3568 | struct igb_ring *rx_ring = container_of(napi, struct igb_ring, napi); |
3569 | struct igb_adapter *adapter = rx_ring->adapter; | |
9d5c8243 | 3570 | struct net_device *netdev = adapter->netdev; |
661086df | 3571 | int tx_clean_complete, work_done = 0; |
9d5c8243 | 3572 | |
661086df | 3573 | /* this poll routine only supports one tx and one rx queue */ |
421e02f0 | 3574 | #ifdef CONFIG_IGB_DCA |
7dfc16fa | 3575 | if (adapter->flags & IGB_FLAG_DCA_ENABLED) |
fe4506b6 JC |
3576 | igb_update_tx_dca(&adapter->tx_ring[0]); |
3577 | #endif | |
661086df | 3578 | tx_clean_complete = igb_clean_tx_irq(&adapter->tx_ring[0]); |
fe4506b6 | 3579 | |
421e02f0 | 3580 | #ifdef CONFIG_IGB_DCA |
7dfc16fa | 3581 | if (adapter->flags & IGB_FLAG_DCA_ENABLED) |
fe4506b6 JC |
3582 | igb_update_rx_dca(&adapter->rx_ring[0]); |
3583 | #endif | |
661086df | 3584 | igb_clean_rx_irq_adv(&adapter->rx_ring[0], &work_done, budget); |
9d5c8243 AK |
3585 | |
3586 | /* If no Tx and not enough Rx work done, exit the polling mode */ | |
3587 | if ((tx_clean_complete && (work_done < budget)) || | |
3588 | !netif_running(netdev)) { | |
9d5c8243 | 3589 | if (adapter->itr_setting & 3) |
6eb5a7f1 | 3590 | igb_set_itr(adapter); |
288379f0 | 3591 | napi_complete(napi); |
9d5c8243 AK |
3592 | if (!test_bit(__IGB_DOWN, &adapter->state)) |
3593 | igb_irq_enable(adapter); | |
3594 | return 0; | |
3595 | } | |
3596 | ||
3597 | return 1; | |
3598 | } | |
3599 | ||
3600 | static int igb_clean_rx_ring_msix(struct napi_struct *napi, int budget) | |
3601 | { | |
3602 | struct igb_ring *rx_ring = container_of(napi, struct igb_ring, napi); | |
3603 | struct igb_adapter *adapter = rx_ring->adapter; | |
3604 | struct e1000_hw *hw = &adapter->hw; | |
3605 | struct net_device *netdev = adapter->netdev; | |
3606 | int work_done = 0; | |
3607 | ||
421e02f0 | 3608 | #ifdef CONFIG_IGB_DCA |
7dfc16fa | 3609 | if (adapter->flags & IGB_FLAG_DCA_ENABLED) |
fe4506b6 JC |
3610 | igb_update_rx_dca(rx_ring); |
3611 | #endif | |
3b644cf6 | 3612 | igb_clean_rx_irq_adv(rx_ring, &work_done, budget); |
9d5c8243 AK |
3613 | |
3614 | ||
3615 | /* If not enough Rx work done, exit the polling mode */ | |
3616 | if ((work_done == 0) || !netif_running(netdev)) { | |
288379f0 | 3617 | napi_complete(napi); |
9d5c8243 | 3618 | |
6eb5a7f1 AD |
3619 | if (adapter->itr_setting & 3) { |
3620 | if (adapter->num_rx_queues == 1) | |
3621 | igb_set_itr(adapter); | |
3622 | else | |
3623 | igb_update_ring_itr(rx_ring); | |
9d5c8243 | 3624 | } |
844290e5 PW |
3625 | |
3626 | if (!test_bit(__IGB_DOWN, &adapter->state)) | |
3627 | wr32(E1000_EIMS, rx_ring->eims_value); | |
3628 | ||
9d5c8243 AK |
3629 | return 0; |
3630 | } | |
3631 | ||
3632 | return 1; | |
3633 | } | |
6d8126f9 | 3634 | |
9d5c8243 AK |
3635 | /** |
3636 | * igb_clean_tx_irq - Reclaim resources after transmit completes | |
3637 | * @adapter: board private structure | |
3638 | * returns true if ring is completely cleaned | |
3639 | **/ | |
3b644cf6 | 3640 | static bool igb_clean_tx_irq(struct igb_ring *tx_ring) |
9d5c8243 | 3641 | { |
3b644cf6 | 3642 | struct igb_adapter *adapter = tx_ring->adapter; |
3b644cf6 | 3643 | struct net_device *netdev = adapter->netdev; |
0e014cb1 | 3644 | struct e1000_hw *hw = &adapter->hw; |
9d5c8243 AK |
3645 | struct igb_buffer *buffer_info; |
3646 | struct sk_buff *skb; | |
0e014cb1 | 3647 | union e1000_adv_tx_desc *tx_desc, *eop_desc; |
9d5c8243 | 3648 | unsigned int total_bytes = 0, total_packets = 0; |
0e014cb1 AD |
3649 | unsigned int i, eop, count = 0; |
3650 | bool cleaned = false; | |
9d5c8243 | 3651 | |
9d5c8243 | 3652 | i = tx_ring->next_to_clean; |
0e014cb1 AD |
3653 | eop = tx_ring->buffer_info[i].next_to_watch; |
3654 | eop_desc = E1000_TX_DESC_ADV(*tx_ring, eop); | |
3655 | ||
3656 | while ((eop_desc->wb.status & cpu_to_le32(E1000_TXD_STAT_DD)) && | |
3657 | (count < tx_ring->count)) { | |
3658 | for (cleaned = false; !cleaned; count++) { | |
3659 | tx_desc = E1000_TX_DESC_ADV(*tx_ring, i); | |
9d5c8243 | 3660 | buffer_info = &tx_ring->buffer_info[i]; |
0e014cb1 | 3661 | cleaned = (i == eop); |
9d5c8243 AK |
3662 | skb = buffer_info->skb; |
3663 | ||
3664 | if (skb) { | |
3665 | unsigned int segs, bytecount; | |
3666 | /* gso_segs is currently only valid for tcp */ | |
3667 | segs = skb_shinfo(skb)->gso_segs ?: 1; | |
3668 | /* multiply data chunks by size of headers */ | |
3669 | bytecount = ((segs - 1) * skb_headlen(skb)) + | |
3670 | skb->len; | |
3671 | total_packets += segs; | |
3672 | total_bytes += bytecount; | |
3673 | } | |
3674 | ||
3675 | igb_unmap_and_free_tx_resource(adapter, buffer_info); | |
0e014cb1 | 3676 | tx_desc->wb.status = 0; |
9d5c8243 AK |
3677 | |
3678 | i++; | |
3679 | if (i == tx_ring->count) | |
3680 | i = 0; | |
9d5c8243 | 3681 | } |
0e014cb1 AD |
3682 | |
3683 | eop = tx_ring->buffer_info[i].next_to_watch; | |
3684 | eop_desc = E1000_TX_DESC_ADV(*tx_ring, eop); | |
3685 | } | |
3686 | ||
9d5c8243 AK |
3687 | tx_ring->next_to_clean = i; |
3688 | ||
fc7d345d | 3689 | if (unlikely(count && |
9d5c8243 AK |
3690 | netif_carrier_ok(netdev) && |
3691 | IGB_DESC_UNUSED(tx_ring) >= IGB_TX_QUEUE_WAKE)) { | |
3692 | /* Make sure that anybody stopping the queue after this | |
3693 | * sees the new next_to_clean. | |
3694 | */ | |
3695 | smp_mb(); | |
661086df PWJ |
3696 | if (__netif_subqueue_stopped(netdev, tx_ring->queue_index) && |
3697 | !(test_bit(__IGB_DOWN, &adapter->state))) { | |
3698 | netif_wake_subqueue(netdev, tx_ring->queue_index); | |
3699 | ++adapter->restart_queue; | |
3700 | } | |
9d5c8243 AK |
3701 | } |
3702 | ||
3703 | if (tx_ring->detect_tx_hung) { | |
3704 | /* Detect a transmit hang in hardware, this serializes the | |
3705 | * check with the clearing of time_stamp and movement of i */ | |
3706 | tx_ring->detect_tx_hung = false; | |
3707 | if (tx_ring->buffer_info[i].time_stamp && | |
3708 | time_after(jiffies, tx_ring->buffer_info[i].time_stamp + | |
3709 | (adapter->tx_timeout_factor * HZ)) | |
3710 | && !(rd32(E1000_STATUS) & | |
3711 | E1000_STATUS_TXOFF)) { | |
3712 | ||
9d5c8243 AK |
3713 | /* detected Tx unit hang */ |
3714 | dev_err(&adapter->pdev->dev, | |
3715 | "Detected Tx Unit Hang\n" | |
2d064c06 | 3716 | " Tx Queue <%d>\n" |
9d5c8243 AK |
3717 | " TDH <%x>\n" |
3718 | " TDT <%x>\n" | |
3719 | " next_to_use <%x>\n" | |
3720 | " next_to_clean <%x>\n" | |
9d5c8243 AK |
3721 | "buffer_info[next_to_clean]\n" |
3722 | " time_stamp <%lx>\n" | |
0e014cb1 | 3723 | " next_to_watch <%x>\n" |
9d5c8243 AK |
3724 | " jiffies <%lx>\n" |
3725 | " desc.status <%x>\n", | |
2d064c06 | 3726 | tx_ring->queue_index, |
9d5c8243 AK |
3727 | readl(adapter->hw.hw_addr + tx_ring->head), |
3728 | readl(adapter->hw.hw_addr + tx_ring->tail), | |
3729 | tx_ring->next_to_use, | |
3730 | tx_ring->next_to_clean, | |
9d5c8243 | 3731 | tx_ring->buffer_info[i].time_stamp, |
0e014cb1 | 3732 | eop, |
9d5c8243 | 3733 | jiffies, |
0e014cb1 | 3734 | eop_desc->wb.status); |
661086df | 3735 | netif_stop_subqueue(netdev, tx_ring->queue_index); |
9d5c8243 AK |
3736 | } |
3737 | } | |
3738 | tx_ring->total_bytes += total_bytes; | |
3739 | tx_ring->total_packets += total_packets; | |
e21ed353 AD |
3740 | tx_ring->tx_stats.bytes += total_bytes; |
3741 | tx_ring->tx_stats.packets += total_packets; | |
9d5c8243 AK |
3742 | adapter->net_stats.tx_bytes += total_bytes; |
3743 | adapter->net_stats.tx_packets += total_packets; | |
0e014cb1 | 3744 | return (count < tx_ring->count); |
9d5c8243 AK |
3745 | } |
3746 | ||
9d5c8243 AK |
3747 | /** |
3748 | * igb_receive_skb - helper function to handle rx indications | |
eebbbdba | 3749 | * @ring: pointer to receive ring receving this packet |
9d5c8243 AK |
3750 | * @status: descriptor status field as written by hardware |
3751 | * @vlan: descriptor vlan field as written by hardware (no le/be conversion) | |
3752 | * @skb: pointer to sk_buff to be indicated to stack | |
3753 | **/ | |
d3352520 AD |
3754 | static void igb_receive_skb(struct igb_ring *ring, u8 status, |
3755 | union e1000_adv_rx_desc * rx_desc, | |
3756 | struct sk_buff *skb) | |
3757 | { | |
3758 | struct igb_adapter * adapter = ring->adapter; | |
3759 | bool vlan_extracted = (adapter->vlgrp && (status & E1000_RXD_STAT_VP)); | |
3760 | ||
0c8dfc83 | 3761 | skb_record_rx_queue(skb, ring->queue_index); |
5c0999b7 | 3762 | if (skb->ip_summed == CHECKSUM_UNNECESSARY) { |
d3352520 | 3763 | if (vlan_extracted) |
5c0999b7 HX |
3764 | vlan_gro_receive(&ring->napi, adapter->vlgrp, |
3765 | le16_to_cpu(rx_desc->wb.upper.vlan), | |
3766 | skb); | |
d3352520 | 3767 | else |
5c0999b7 | 3768 | napi_gro_receive(&ring->napi, skb); |
d3352520 | 3769 | } else { |
d3352520 AD |
3770 | if (vlan_extracted) |
3771 | vlan_hwaccel_receive_skb(skb, adapter->vlgrp, | |
3772 | le16_to_cpu(rx_desc->wb.upper.vlan)); | |
3773 | else | |
d3352520 | 3774 | netif_receive_skb(skb); |
d3352520 | 3775 | } |
9d5c8243 AK |
3776 | } |
3777 | ||
3778 | ||
3779 | static inline void igb_rx_checksum_adv(struct igb_adapter *adapter, | |
3780 | u32 status_err, struct sk_buff *skb) | |
3781 | { | |
3782 | skb->ip_summed = CHECKSUM_NONE; | |
3783 | ||
3784 | /* Ignore Checksum bit is set or checksum is disabled through ethtool */ | |
3785 | if ((status_err & E1000_RXD_STAT_IXSM) || !adapter->rx_csum) | |
3786 | return; | |
3787 | /* TCP/UDP checksum error bit is set */ | |
3788 | if (status_err & | |
3789 | (E1000_RXDEXT_STATERR_TCPE | E1000_RXDEXT_STATERR_IPE)) { | |
3790 | /* let the stack verify checksum errors */ | |
3791 | adapter->hw_csum_err++; | |
3792 | return; | |
3793 | } | |
3794 | /* It must be a TCP or UDP packet with a valid checksum */ | |
3795 | if (status_err & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS)) | |
3796 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
3797 | ||
3798 | adapter->hw_csum_good++; | |
3799 | } | |
3800 | ||
3b644cf6 MW |
3801 | static bool igb_clean_rx_irq_adv(struct igb_ring *rx_ring, |
3802 | int *work_done, int budget) | |
9d5c8243 | 3803 | { |
3b644cf6 | 3804 | struct igb_adapter *adapter = rx_ring->adapter; |
9d5c8243 AK |
3805 | struct net_device *netdev = adapter->netdev; |
3806 | struct pci_dev *pdev = adapter->pdev; | |
3807 | union e1000_adv_rx_desc *rx_desc , *next_rxd; | |
3808 | struct igb_buffer *buffer_info , *next_buffer; | |
3809 | struct sk_buff *skb; | |
bf36c1a0 | 3810 | unsigned int i; |
9d5c8243 AK |
3811 | u32 length, hlen, staterr; |
3812 | bool cleaned = false; | |
3813 | int cleaned_count = 0; | |
3814 | unsigned int total_bytes = 0, total_packets = 0; | |
3815 | ||
3816 | i = rx_ring->next_to_clean; | |
69d3ca53 | 3817 | buffer_info = &rx_ring->buffer_info[i]; |
9d5c8243 AK |
3818 | rx_desc = E1000_RX_DESC_ADV(*rx_ring, i); |
3819 | staterr = le32_to_cpu(rx_desc->wb.upper.status_error); | |
3820 | ||
3821 | while (staterr & E1000_RXD_STAT_DD) { | |
3822 | if (*work_done >= budget) | |
3823 | break; | |
3824 | (*work_done)++; | |
9d5c8243 | 3825 | |
69d3ca53 AD |
3826 | skb = buffer_info->skb; |
3827 | prefetch(skb->data - NET_IP_ALIGN); | |
3828 | buffer_info->skb = NULL; | |
3829 | ||
3830 | i++; | |
3831 | if (i == rx_ring->count) | |
3832 | i = 0; | |
3833 | next_rxd = E1000_RX_DESC_ADV(*rx_ring, i); | |
3834 | prefetch(next_rxd); | |
3835 | next_buffer = &rx_ring->buffer_info[i]; | |
9d5c8243 AK |
3836 | |
3837 | length = le16_to_cpu(rx_desc->wb.upper.length); | |
3838 | cleaned = true; | |
3839 | cleaned_count++; | |
3840 | ||
bf36c1a0 AD |
3841 | if (!adapter->rx_ps_hdr_size) { |
3842 | pci_unmap_single(pdev, buffer_info->dma, | |
3843 | adapter->rx_buffer_len + | |
3844 | NET_IP_ALIGN, | |
3845 | PCI_DMA_FROMDEVICE); | |
3846 | skb_put(skb, length); | |
3847 | goto send_up; | |
9d5c8243 AK |
3848 | } |
3849 | ||
69d3ca53 AD |
3850 | /* HW will not DMA in data larger than the given buffer, even |
3851 | * if it parses the (NFS, of course) header to be larger. In | |
3852 | * that case, it fills the header buffer and spills the rest | |
3853 | * into the page. | |
3854 | */ | |
3855 | hlen = (le16_to_cpu(rx_desc->wb.lower.lo_dword.hdr_info) & | |
3856 | E1000_RXDADV_HDRBUFLEN_MASK) >> E1000_RXDADV_HDRBUFLEN_SHIFT; | |
3857 | if (hlen > adapter->rx_ps_hdr_size) | |
3858 | hlen = adapter->rx_ps_hdr_size; | |
3859 | ||
bf36c1a0 AD |
3860 | if (!skb_shinfo(skb)->nr_frags) { |
3861 | pci_unmap_single(pdev, buffer_info->dma, | |
3862 | adapter->rx_ps_hdr_size + | |
3863 | NET_IP_ALIGN, | |
3864 | PCI_DMA_FROMDEVICE); | |
3865 | skb_put(skb, hlen); | |
3866 | } | |
3867 | ||
3868 | if (length) { | |
9d5c8243 | 3869 | pci_unmap_page(pdev, buffer_info->page_dma, |
bf36c1a0 | 3870 | PAGE_SIZE / 2, PCI_DMA_FROMDEVICE); |
9d5c8243 | 3871 | buffer_info->page_dma = 0; |
bf36c1a0 AD |
3872 | |
3873 | skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags++, | |
3874 | buffer_info->page, | |
3875 | buffer_info->page_offset, | |
3876 | length); | |
3877 | ||
3878 | if ((adapter->rx_buffer_len > (PAGE_SIZE / 2)) || | |
3879 | (page_count(buffer_info->page) != 1)) | |
3880 | buffer_info->page = NULL; | |
3881 | else | |
3882 | get_page(buffer_info->page); | |
9d5c8243 AK |
3883 | |
3884 | skb->len += length; | |
3885 | skb->data_len += length; | |
9d5c8243 | 3886 | |
bf36c1a0 | 3887 | skb->truesize += length; |
9d5c8243 | 3888 | } |
9d5c8243 | 3889 | |
bf36c1a0 | 3890 | if (!(staterr & E1000_RXD_STAT_EOP)) { |
b2d56536 AD |
3891 | buffer_info->skb = next_buffer->skb; |
3892 | buffer_info->dma = next_buffer->dma; | |
3893 | next_buffer->skb = skb; | |
3894 | next_buffer->dma = 0; | |
bf36c1a0 AD |
3895 | goto next_desc; |
3896 | } | |
69d3ca53 | 3897 | send_up: |
9d5c8243 AK |
3898 | if (staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) { |
3899 | dev_kfree_skb_irq(skb); | |
3900 | goto next_desc; | |
3901 | } | |
9d5c8243 AK |
3902 | |
3903 | total_bytes += skb->len; | |
3904 | total_packets++; | |
3905 | ||
3906 | igb_rx_checksum_adv(adapter, staterr, skb); | |
3907 | ||
3908 | skb->protocol = eth_type_trans(skb, netdev); | |
3909 | ||
d3352520 | 3910 | igb_receive_skb(rx_ring, staterr, rx_desc, skb); |
9d5c8243 | 3911 | |
9d5c8243 AK |
3912 | next_desc: |
3913 | rx_desc->wb.upper.status_error = 0; | |
3914 | ||
3915 | /* return some buffers to hardware, one at a time is too slow */ | |
3916 | if (cleaned_count >= IGB_RX_BUFFER_WRITE) { | |
3b644cf6 | 3917 | igb_alloc_rx_buffers_adv(rx_ring, cleaned_count); |
9d5c8243 AK |
3918 | cleaned_count = 0; |
3919 | } | |
3920 | ||
3921 | /* use prefetched values */ | |
3922 | rx_desc = next_rxd; | |
3923 | buffer_info = next_buffer; | |
9d5c8243 AK |
3924 | staterr = le32_to_cpu(rx_desc->wb.upper.status_error); |
3925 | } | |
bf36c1a0 | 3926 | |
9d5c8243 AK |
3927 | rx_ring->next_to_clean = i; |
3928 | cleaned_count = IGB_DESC_UNUSED(rx_ring); | |
3929 | ||
3930 | if (cleaned_count) | |
3b644cf6 | 3931 | igb_alloc_rx_buffers_adv(rx_ring, cleaned_count); |
9d5c8243 AK |
3932 | |
3933 | rx_ring->total_packets += total_packets; | |
3934 | rx_ring->total_bytes += total_bytes; | |
3935 | rx_ring->rx_stats.packets += total_packets; | |
3936 | rx_ring->rx_stats.bytes += total_bytes; | |
3937 | adapter->net_stats.rx_bytes += total_bytes; | |
3938 | adapter->net_stats.rx_packets += total_packets; | |
3939 | return cleaned; | |
3940 | } | |
3941 | ||
3942 | ||
3943 | /** | |
3944 | * igb_alloc_rx_buffers_adv - Replace used receive buffers; packet split | |
3945 | * @adapter: address of board private structure | |
3946 | **/ | |
3b644cf6 | 3947 | static void igb_alloc_rx_buffers_adv(struct igb_ring *rx_ring, |
9d5c8243 AK |
3948 | int cleaned_count) |
3949 | { | |
3b644cf6 | 3950 | struct igb_adapter *adapter = rx_ring->adapter; |
9d5c8243 AK |
3951 | struct net_device *netdev = adapter->netdev; |
3952 | struct pci_dev *pdev = adapter->pdev; | |
3953 | union e1000_adv_rx_desc *rx_desc; | |
3954 | struct igb_buffer *buffer_info; | |
3955 | struct sk_buff *skb; | |
3956 | unsigned int i; | |
db761762 | 3957 | int bufsz; |
9d5c8243 AK |
3958 | |
3959 | i = rx_ring->next_to_use; | |
3960 | buffer_info = &rx_ring->buffer_info[i]; | |
3961 | ||
db761762 AD |
3962 | if (adapter->rx_ps_hdr_size) |
3963 | bufsz = adapter->rx_ps_hdr_size; | |
3964 | else | |
3965 | bufsz = adapter->rx_buffer_len; | |
3966 | bufsz += NET_IP_ALIGN; | |
3967 | ||
9d5c8243 AK |
3968 | while (cleaned_count--) { |
3969 | rx_desc = E1000_RX_DESC_ADV(*rx_ring, i); | |
3970 | ||
bf36c1a0 | 3971 | if (adapter->rx_ps_hdr_size && !buffer_info->page_dma) { |
9d5c8243 | 3972 | if (!buffer_info->page) { |
bf36c1a0 AD |
3973 | buffer_info->page = alloc_page(GFP_ATOMIC); |
3974 | if (!buffer_info->page) { | |
3975 | adapter->alloc_rx_buff_failed++; | |
3976 | goto no_buffers; | |
3977 | } | |
3978 | buffer_info->page_offset = 0; | |
3979 | } else { | |
3980 | buffer_info->page_offset ^= PAGE_SIZE / 2; | |
9d5c8243 AK |
3981 | } |
3982 | buffer_info->page_dma = | |
db761762 | 3983 | pci_map_page(pdev, buffer_info->page, |
bf36c1a0 AD |
3984 | buffer_info->page_offset, |
3985 | PAGE_SIZE / 2, | |
9d5c8243 AK |
3986 | PCI_DMA_FROMDEVICE); |
3987 | } | |
3988 | ||
3989 | if (!buffer_info->skb) { | |
9d5c8243 | 3990 | skb = netdev_alloc_skb(netdev, bufsz); |
9d5c8243 AK |
3991 | if (!skb) { |
3992 | adapter->alloc_rx_buff_failed++; | |
3993 | goto no_buffers; | |
3994 | } | |
3995 | ||
3996 | /* Make buffer alignment 2 beyond a 16 byte boundary | |
3997 | * this will result in a 16 byte aligned IP header after | |
3998 | * the 14 byte MAC header is removed | |
3999 | */ | |
4000 | skb_reserve(skb, NET_IP_ALIGN); | |
4001 | ||
4002 | buffer_info->skb = skb; | |
4003 | buffer_info->dma = pci_map_single(pdev, skb->data, | |
4004 | bufsz, | |
4005 | PCI_DMA_FROMDEVICE); | |
9d5c8243 AK |
4006 | } |
4007 | /* Refresh the desc even if buffer_addrs didn't change because | |
4008 | * each write-back erases this info. */ | |
4009 | if (adapter->rx_ps_hdr_size) { | |
4010 | rx_desc->read.pkt_addr = | |
4011 | cpu_to_le64(buffer_info->page_dma); | |
4012 | rx_desc->read.hdr_addr = cpu_to_le64(buffer_info->dma); | |
4013 | } else { | |
4014 | rx_desc->read.pkt_addr = | |
4015 | cpu_to_le64(buffer_info->dma); | |
4016 | rx_desc->read.hdr_addr = 0; | |
4017 | } | |
4018 | ||
4019 | i++; | |
4020 | if (i == rx_ring->count) | |
4021 | i = 0; | |
4022 | buffer_info = &rx_ring->buffer_info[i]; | |
4023 | } | |
4024 | ||
4025 | no_buffers: | |
4026 | if (rx_ring->next_to_use != i) { | |
4027 | rx_ring->next_to_use = i; | |
4028 | if (i == 0) | |
4029 | i = (rx_ring->count - 1); | |
4030 | else | |
4031 | i--; | |
4032 | ||
4033 | /* Force memory writes to complete before letting h/w | |
4034 | * know there are new descriptors to fetch. (Only | |
4035 | * applicable for weak-ordered memory model archs, | |
4036 | * such as IA-64). */ | |
4037 | wmb(); | |
4038 | writel(i, adapter->hw.hw_addr + rx_ring->tail); | |
4039 | } | |
4040 | } | |
4041 | ||
4042 | /** | |
4043 | * igb_mii_ioctl - | |
4044 | * @netdev: | |
4045 | * @ifreq: | |
4046 | * @cmd: | |
4047 | **/ | |
4048 | static int igb_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) | |
4049 | { | |
4050 | struct igb_adapter *adapter = netdev_priv(netdev); | |
4051 | struct mii_ioctl_data *data = if_mii(ifr); | |
4052 | ||
4053 | if (adapter->hw.phy.media_type != e1000_media_type_copper) | |
4054 | return -EOPNOTSUPP; | |
4055 | ||
4056 | switch (cmd) { | |
4057 | case SIOCGMIIPHY: | |
4058 | data->phy_id = adapter->hw.phy.addr; | |
4059 | break; | |
4060 | case SIOCGMIIREG: | |
4061 | if (!capable(CAP_NET_ADMIN)) | |
4062 | return -EPERM; | |
f5f4cf08 AD |
4063 | if (igb_read_phy_reg(&adapter->hw, data->reg_num & 0x1F, |
4064 | &data->val_out)) | |
9d5c8243 AK |
4065 | return -EIO; |
4066 | break; | |
4067 | case SIOCSMIIREG: | |
4068 | default: | |
4069 | return -EOPNOTSUPP; | |
4070 | } | |
4071 | return 0; | |
4072 | } | |
4073 | ||
4074 | /** | |
4075 | * igb_ioctl - | |
4076 | * @netdev: | |
4077 | * @ifreq: | |
4078 | * @cmd: | |
4079 | **/ | |
4080 | static int igb_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) | |
4081 | { | |
4082 | switch (cmd) { | |
4083 | case SIOCGMIIPHY: | |
4084 | case SIOCGMIIREG: | |
4085 | case SIOCSMIIREG: | |
4086 | return igb_mii_ioctl(netdev, ifr, cmd); | |
4087 | default: | |
4088 | return -EOPNOTSUPP; | |
4089 | } | |
4090 | } | |
4091 | ||
4092 | static void igb_vlan_rx_register(struct net_device *netdev, | |
4093 | struct vlan_group *grp) | |
4094 | { | |
4095 | struct igb_adapter *adapter = netdev_priv(netdev); | |
4096 | struct e1000_hw *hw = &adapter->hw; | |
4097 | u32 ctrl, rctl; | |
4098 | ||
4099 | igb_irq_disable(adapter); | |
4100 | adapter->vlgrp = grp; | |
4101 | ||
4102 | if (grp) { | |
4103 | /* enable VLAN tag insert/strip */ | |
4104 | ctrl = rd32(E1000_CTRL); | |
4105 | ctrl |= E1000_CTRL_VME; | |
4106 | wr32(E1000_CTRL, ctrl); | |
4107 | ||
4108 | /* enable VLAN receive filtering */ | |
4109 | rctl = rd32(E1000_RCTL); | |
9d5c8243 AK |
4110 | rctl &= ~E1000_RCTL_CFIEN; |
4111 | wr32(E1000_RCTL, rctl); | |
4112 | igb_update_mng_vlan(adapter); | |
4113 | wr32(E1000_RLPML, | |
4114 | adapter->max_frame_size + VLAN_TAG_SIZE); | |
4115 | } else { | |
4116 | /* disable VLAN tag insert/strip */ | |
4117 | ctrl = rd32(E1000_CTRL); | |
4118 | ctrl &= ~E1000_CTRL_VME; | |
4119 | wr32(E1000_CTRL, ctrl); | |
4120 | ||
9d5c8243 AK |
4121 | if (adapter->mng_vlan_id != (u16)IGB_MNG_VLAN_NONE) { |
4122 | igb_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); | |
4123 | adapter->mng_vlan_id = IGB_MNG_VLAN_NONE; | |
4124 | } | |
4125 | wr32(E1000_RLPML, | |
4126 | adapter->max_frame_size); | |
4127 | } | |
4128 | ||
4129 | if (!test_bit(__IGB_DOWN, &adapter->state)) | |
4130 | igb_irq_enable(adapter); | |
4131 | } | |
4132 | ||
4133 | static void igb_vlan_rx_add_vid(struct net_device *netdev, u16 vid) | |
4134 | { | |
4135 | struct igb_adapter *adapter = netdev_priv(netdev); | |
4136 | struct e1000_hw *hw = &adapter->hw; | |
4137 | u32 vfta, index; | |
4138 | ||
28b0759c | 4139 | if ((hw->mng_cookie.status & |
9d5c8243 AK |
4140 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN) && |
4141 | (vid == adapter->mng_vlan_id)) | |
4142 | return; | |
4143 | /* add VID to filter table */ | |
4144 | index = (vid >> 5) & 0x7F; | |
4145 | vfta = array_rd32(E1000_VFTA, index); | |
4146 | vfta |= (1 << (vid & 0x1F)); | |
4147 | igb_write_vfta(&adapter->hw, index, vfta); | |
4148 | } | |
4149 | ||
4150 | static void igb_vlan_rx_kill_vid(struct net_device *netdev, u16 vid) | |
4151 | { | |
4152 | struct igb_adapter *adapter = netdev_priv(netdev); | |
4153 | struct e1000_hw *hw = &adapter->hw; | |
4154 | u32 vfta, index; | |
4155 | ||
4156 | igb_irq_disable(adapter); | |
4157 | vlan_group_set_device(adapter->vlgrp, vid, NULL); | |
4158 | ||
4159 | if (!test_bit(__IGB_DOWN, &adapter->state)) | |
4160 | igb_irq_enable(adapter); | |
4161 | ||
4162 | if ((adapter->hw.mng_cookie.status & | |
4163 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN) && | |
4164 | (vid == adapter->mng_vlan_id)) { | |
4165 | /* release control to f/w */ | |
4166 | igb_release_hw_control(adapter); | |
4167 | return; | |
4168 | } | |
4169 | ||
4170 | /* remove VID from filter table */ | |
4171 | index = (vid >> 5) & 0x7F; | |
4172 | vfta = array_rd32(E1000_VFTA, index); | |
4173 | vfta &= ~(1 << (vid & 0x1F)); | |
4174 | igb_write_vfta(&adapter->hw, index, vfta); | |
4175 | } | |
4176 | ||
4177 | static void igb_restore_vlan(struct igb_adapter *adapter) | |
4178 | { | |
4179 | igb_vlan_rx_register(adapter->netdev, adapter->vlgrp); | |
4180 | ||
4181 | if (adapter->vlgrp) { | |
4182 | u16 vid; | |
4183 | for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) { | |
4184 | if (!vlan_group_get_device(adapter->vlgrp, vid)) | |
4185 | continue; | |
4186 | igb_vlan_rx_add_vid(adapter->netdev, vid); | |
4187 | } | |
4188 | } | |
4189 | } | |
4190 | ||
4191 | int igb_set_spd_dplx(struct igb_adapter *adapter, u16 spddplx) | |
4192 | { | |
4193 | struct e1000_mac_info *mac = &adapter->hw.mac; | |
4194 | ||
4195 | mac->autoneg = 0; | |
4196 | ||
4197 | /* Fiber NICs only allow 1000 gbps Full duplex */ | |
4198 | if ((adapter->hw.phy.media_type == e1000_media_type_fiber) && | |
4199 | spddplx != (SPEED_1000 + DUPLEX_FULL)) { | |
4200 | dev_err(&adapter->pdev->dev, | |
4201 | "Unsupported Speed/Duplex configuration\n"); | |
4202 | return -EINVAL; | |
4203 | } | |
4204 | ||
4205 | switch (spddplx) { | |
4206 | case SPEED_10 + DUPLEX_HALF: | |
4207 | mac->forced_speed_duplex = ADVERTISE_10_HALF; | |
4208 | break; | |
4209 | case SPEED_10 + DUPLEX_FULL: | |
4210 | mac->forced_speed_duplex = ADVERTISE_10_FULL; | |
4211 | break; | |
4212 | case SPEED_100 + DUPLEX_HALF: | |
4213 | mac->forced_speed_duplex = ADVERTISE_100_HALF; | |
4214 | break; | |
4215 | case SPEED_100 + DUPLEX_FULL: | |
4216 | mac->forced_speed_duplex = ADVERTISE_100_FULL; | |
4217 | break; | |
4218 | case SPEED_1000 + DUPLEX_FULL: | |
4219 | mac->autoneg = 1; | |
4220 | adapter->hw.phy.autoneg_advertised = ADVERTISE_1000_FULL; | |
4221 | break; | |
4222 | case SPEED_1000 + DUPLEX_HALF: /* not supported */ | |
4223 | default: | |
4224 | dev_err(&adapter->pdev->dev, | |
4225 | "Unsupported Speed/Duplex configuration\n"); | |
4226 | return -EINVAL; | |
4227 | } | |
4228 | return 0; | |
4229 | } | |
4230 | ||
4231 | ||
4232 | static int igb_suspend(struct pci_dev *pdev, pm_message_t state) | |
4233 | { | |
4234 | struct net_device *netdev = pci_get_drvdata(pdev); | |
4235 | struct igb_adapter *adapter = netdev_priv(netdev); | |
4236 | struct e1000_hw *hw = &adapter->hw; | |
2d064c06 | 4237 | u32 ctrl, rctl, status; |
9d5c8243 AK |
4238 | u32 wufc = adapter->wol; |
4239 | #ifdef CONFIG_PM | |
4240 | int retval = 0; | |
4241 | #endif | |
4242 | ||
4243 | netif_device_detach(netdev); | |
4244 | ||
a88f10ec AD |
4245 | if (netif_running(netdev)) |
4246 | igb_close(netdev); | |
4247 | ||
4248 | igb_reset_interrupt_capability(adapter); | |
4249 | ||
4250 | igb_free_queues(adapter); | |
9d5c8243 AK |
4251 | |
4252 | #ifdef CONFIG_PM | |
4253 | retval = pci_save_state(pdev); | |
4254 | if (retval) | |
4255 | return retval; | |
4256 | #endif | |
4257 | ||
4258 | status = rd32(E1000_STATUS); | |
4259 | if (status & E1000_STATUS_LU) | |
4260 | wufc &= ~E1000_WUFC_LNKC; | |
4261 | ||
4262 | if (wufc) { | |
4263 | igb_setup_rctl(adapter); | |
4264 | igb_set_multi(netdev); | |
4265 | ||
4266 | /* turn on all-multi mode if wake on multicast is enabled */ | |
4267 | if (wufc & E1000_WUFC_MC) { | |
4268 | rctl = rd32(E1000_RCTL); | |
4269 | rctl |= E1000_RCTL_MPE; | |
4270 | wr32(E1000_RCTL, rctl); | |
4271 | } | |
4272 | ||
4273 | ctrl = rd32(E1000_CTRL); | |
4274 | /* advertise wake from D3Cold */ | |
4275 | #define E1000_CTRL_ADVD3WUC 0x00100000 | |
4276 | /* phy power management enable */ | |
4277 | #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000 | |
4278 | ctrl |= E1000_CTRL_ADVD3WUC; | |
4279 | wr32(E1000_CTRL, ctrl); | |
4280 | ||
9d5c8243 AK |
4281 | /* Allow time for pending master requests to run */ |
4282 | igb_disable_pcie_master(&adapter->hw); | |
4283 | ||
4284 | wr32(E1000_WUC, E1000_WUC_PME_EN); | |
4285 | wr32(E1000_WUFC, wufc); | |
9d5c8243 AK |
4286 | } else { |
4287 | wr32(E1000_WUC, 0); | |
4288 | wr32(E1000_WUFC, 0); | |
9d5c8243 AK |
4289 | } |
4290 | ||
2d064c06 AD |
4291 | /* make sure adapter isn't asleep if manageability/wol is enabled */ |
4292 | if (wufc || adapter->en_mng_pt) { | |
9d5c8243 AK |
4293 | pci_enable_wake(pdev, PCI_D3hot, 1); |
4294 | pci_enable_wake(pdev, PCI_D3cold, 1); | |
2d064c06 AD |
4295 | } else { |
4296 | igb_shutdown_fiber_serdes_link_82575(hw); | |
4297 | pci_enable_wake(pdev, PCI_D3hot, 0); | |
4298 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
9d5c8243 AK |
4299 | } |
4300 | ||
4301 | /* Release control of h/w to f/w. If f/w is AMT enabled, this | |
4302 | * would have already happened in close and is redundant. */ | |
4303 | igb_release_hw_control(adapter); | |
4304 | ||
4305 | pci_disable_device(pdev); | |
4306 | ||
4307 | pci_set_power_state(pdev, pci_choose_state(pdev, state)); | |
4308 | ||
4309 | return 0; | |
4310 | } | |
4311 | ||
4312 | #ifdef CONFIG_PM | |
4313 | static int igb_resume(struct pci_dev *pdev) | |
4314 | { | |
4315 | struct net_device *netdev = pci_get_drvdata(pdev); | |
4316 | struct igb_adapter *adapter = netdev_priv(netdev); | |
4317 | struct e1000_hw *hw = &adapter->hw; | |
4318 | u32 err; | |
4319 | ||
4320 | pci_set_power_state(pdev, PCI_D0); | |
4321 | pci_restore_state(pdev); | |
42bfd33a | 4322 | |
aed5dec3 | 4323 | err = pci_enable_device_mem(pdev); |
9d5c8243 AK |
4324 | if (err) { |
4325 | dev_err(&pdev->dev, | |
4326 | "igb: Cannot enable PCI device from suspend\n"); | |
4327 | return err; | |
4328 | } | |
4329 | pci_set_master(pdev); | |
4330 | ||
4331 | pci_enable_wake(pdev, PCI_D3hot, 0); | |
4332 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
4333 | ||
a88f10ec AD |
4334 | igb_set_interrupt_capability(adapter); |
4335 | ||
4336 | if (igb_alloc_queues(adapter)) { | |
4337 | dev_err(&pdev->dev, "Unable to allocate memory for queues\n"); | |
4338 | return -ENOMEM; | |
9d5c8243 AK |
4339 | } |
4340 | ||
4341 | /* e1000_power_up_phy(adapter); */ | |
4342 | ||
4343 | igb_reset(adapter); | |
a8564f03 AD |
4344 | |
4345 | /* let the f/w know that the h/w is now under the control of the | |
4346 | * driver. */ | |
4347 | igb_get_hw_control(adapter); | |
4348 | ||
9d5c8243 AK |
4349 | wr32(E1000_WUS, ~0); |
4350 | ||
a88f10ec AD |
4351 | if (netif_running(netdev)) { |
4352 | err = igb_open(netdev); | |
4353 | if (err) | |
4354 | return err; | |
4355 | } | |
9d5c8243 AK |
4356 | |
4357 | netif_device_attach(netdev); | |
4358 | ||
9d5c8243 AK |
4359 | return 0; |
4360 | } | |
4361 | #endif | |
4362 | ||
4363 | static void igb_shutdown(struct pci_dev *pdev) | |
4364 | { | |
4365 | igb_suspend(pdev, PMSG_SUSPEND); | |
4366 | } | |
4367 | ||
4368 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
4369 | /* | |
4370 | * Polling 'interrupt' - used by things like netconsole to send skbs | |
4371 | * without having to re-enable interrupts. It's not called while | |
4372 | * the interrupt routine is executing. | |
4373 | */ | |
4374 | static void igb_netpoll(struct net_device *netdev) | |
4375 | { | |
4376 | struct igb_adapter *adapter = netdev_priv(netdev); | |
eebbbdba | 4377 | struct e1000_hw *hw = &adapter->hw; |
9d5c8243 | 4378 | int i; |
9d5c8243 | 4379 | |
eebbbdba AD |
4380 | if (!adapter->msix_entries) { |
4381 | igb_irq_disable(adapter); | |
4382 | napi_schedule(&adapter->rx_ring[0].napi); | |
4383 | return; | |
4384 | } | |
9d5c8243 | 4385 | |
eebbbdba AD |
4386 | for (i = 0; i < adapter->num_tx_queues; i++) { |
4387 | struct igb_ring *tx_ring = &adapter->tx_ring[i]; | |
4388 | wr32(E1000_EIMC, tx_ring->eims_value); | |
4389 | igb_clean_tx_irq(tx_ring); | |
4390 | wr32(E1000_EIMS, tx_ring->eims_value); | |
4391 | } | |
9d5c8243 | 4392 | |
eebbbdba AD |
4393 | for (i = 0; i < adapter->num_rx_queues; i++) { |
4394 | struct igb_ring *rx_ring = &adapter->rx_ring[i]; | |
4395 | wr32(E1000_EIMC, rx_ring->eims_value); | |
4396 | napi_schedule(&rx_ring->napi); | |
4397 | } | |
9d5c8243 AK |
4398 | } |
4399 | #endif /* CONFIG_NET_POLL_CONTROLLER */ | |
4400 | ||
4401 | /** | |
4402 | * igb_io_error_detected - called when PCI error is detected | |
4403 | * @pdev: Pointer to PCI device | |
4404 | * @state: The current pci connection state | |
4405 | * | |
4406 | * This function is called after a PCI bus error affecting | |
4407 | * this device has been detected. | |
4408 | */ | |
4409 | static pci_ers_result_t igb_io_error_detected(struct pci_dev *pdev, | |
4410 | pci_channel_state_t state) | |
4411 | { | |
4412 | struct net_device *netdev = pci_get_drvdata(pdev); | |
4413 | struct igb_adapter *adapter = netdev_priv(netdev); | |
4414 | ||
4415 | netif_device_detach(netdev); | |
4416 | ||
4417 | if (netif_running(netdev)) | |
4418 | igb_down(adapter); | |
4419 | pci_disable_device(pdev); | |
4420 | ||
4421 | /* Request a slot slot reset. */ | |
4422 | return PCI_ERS_RESULT_NEED_RESET; | |
4423 | } | |
4424 | ||
4425 | /** | |
4426 | * igb_io_slot_reset - called after the pci bus has been reset. | |
4427 | * @pdev: Pointer to PCI device | |
4428 | * | |
4429 | * Restart the card from scratch, as if from a cold-boot. Implementation | |
4430 | * resembles the first-half of the igb_resume routine. | |
4431 | */ | |
4432 | static pci_ers_result_t igb_io_slot_reset(struct pci_dev *pdev) | |
4433 | { | |
4434 | struct net_device *netdev = pci_get_drvdata(pdev); | |
4435 | struct igb_adapter *adapter = netdev_priv(netdev); | |
4436 | struct e1000_hw *hw = &adapter->hw; | |
40a914fa | 4437 | pci_ers_result_t result; |
42bfd33a | 4438 | int err; |
9d5c8243 | 4439 | |
aed5dec3 | 4440 | if (pci_enable_device_mem(pdev)) { |
9d5c8243 AK |
4441 | dev_err(&pdev->dev, |
4442 | "Cannot re-enable PCI device after reset.\n"); | |
40a914fa AD |
4443 | result = PCI_ERS_RESULT_DISCONNECT; |
4444 | } else { | |
4445 | pci_set_master(pdev); | |
4446 | pci_restore_state(pdev); | |
9d5c8243 | 4447 | |
40a914fa AD |
4448 | pci_enable_wake(pdev, PCI_D3hot, 0); |
4449 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
9d5c8243 | 4450 | |
40a914fa AD |
4451 | igb_reset(adapter); |
4452 | wr32(E1000_WUS, ~0); | |
4453 | result = PCI_ERS_RESULT_RECOVERED; | |
4454 | } | |
9d5c8243 | 4455 | |
ea943d41 JK |
4456 | err = pci_cleanup_aer_uncorrect_error_status(pdev); |
4457 | if (err) { | |
4458 | dev_err(&pdev->dev, "pci_cleanup_aer_uncorrect_error_status " | |
4459 | "failed 0x%0x\n", err); | |
4460 | /* non-fatal, continue */ | |
4461 | } | |
40a914fa AD |
4462 | |
4463 | return result; | |
9d5c8243 AK |
4464 | } |
4465 | ||
4466 | /** | |
4467 | * igb_io_resume - called when traffic can start flowing again. | |
4468 | * @pdev: Pointer to PCI device | |
4469 | * | |
4470 | * This callback is called when the error recovery driver tells us that | |
4471 | * its OK to resume normal operation. Implementation resembles the | |
4472 | * second-half of the igb_resume routine. | |
4473 | */ | |
4474 | static void igb_io_resume(struct pci_dev *pdev) | |
4475 | { | |
4476 | struct net_device *netdev = pci_get_drvdata(pdev); | |
4477 | struct igb_adapter *adapter = netdev_priv(netdev); | |
4478 | ||
9d5c8243 AK |
4479 | if (netif_running(netdev)) { |
4480 | if (igb_up(adapter)) { | |
4481 | dev_err(&pdev->dev, "igb_up failed after reset\n"); | |
4482 | return; | |
4483 | } | |
4484 | } | |
4485 | ||
4486 | netif_device_attach(netdev); | |
4487 | ||
4488 | /* let the f/w know that the h/w is now under the control of the | |
4489 | * driver. */ | |
4490 | igb_get_hw_control(adapter); | |
9d5c8243 AK |
4491 | } |
4492 | ||
4493 | /* igb_main.c */ |