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9d5c8243 AK |
1 | /******************************************************************************* |
2 | ||
3 | Intel(R) Gigabit Ethernet Linux driver | |
86d5d38f | 4 | Copyright(c) 2007-2009 Intel Corporation. |
9d5c8243 AK |
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> | |
c6cb090b | 37 | #include <linux/net_tstamp.h> |
9d5c8243 AK |
38 | #include <linux/mii.h> |
39 | #include <linux/ethtool.h> | |
40 | #include <linux/if_vlan.h> | |
41 | #include <linux/pci.h> | |
c54106bb | 42 | #include <linux/pci-aspm.h> |
9d5c8243 AK |
43 | #include <linux/delay.h> |
44 | #include <linux/interrupt.h> | |
45 | #include <linux/if_ether.h> | |
40a914fa | 46 | #include <linux/aer.h> |
421e02f0 | 47 | #ifdef CONFIG_IGB_DCA |
fe4506b6 JC |
48 | #include <linux/dca.h> |
49 | #endif | |
9d5c8243 AK |
50 | #include "igb.h" |
51 | ||
86d5d38f | 52 | #define DRV_VERSION "1.3.16-k2" |
9d5c8243 AK |
53 | char igb_driver_name[] = "igb"; |
54 | char igb_driver_version[] = DRV_VERSION; | |
55 | static const char igb_driver_string[] = | |
56 | "Intel(R) Gigabit Ethernet Network Driver"; | |
86d5d38f | 57 | static const char igb_copyright[] = "Copyright (c) 2007-2009 Intel Corporation."; |
9d5c8243 | 58 | |
9d5c8243 AK |
59 | static const struct e1000_info *igb_info_tbl[] = { |
60 | [board_82575] = &e1000_82575_info, | |
61 | }; | |
62 | ||
63 | static struct pci_device_id igb_pci_tbl[] = { | |
2d064c06 | 64 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576), board_82575 }, |
9eb2341d | 65 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_NS), board_82575 }, |
2d064c06 AD |
66 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_FIBER), board_82575 }, |
67 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_SERDES), board_82575 }, | |
c8ea5ea9 | 68 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_QUAD_COPPER), board_82575 }, |
9d5c8243 AK |
69 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82575EB_COPPER), board_82575 }, |
70 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82575EB_FIBER_SERDES), board_82575 }, | |
71 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82575GB_QUAD_COPPER), board_82575 }, | |
72 | /* required last entry */ | |
73 | {0, } | |
74 | }; | |
75 | ||
76 | MODULE_DEVICE_TABLE(pci, igb_pci_tbl); | |
77 | ||
78 | void igb_reset(struct igb_adapter *); | |
79 | static int igb_setup_all_tx_resources(struct igb_adapter *); | |
80 | static int igb_setup_all_rx_resources(struct igb_adapter *); | |
81 | static void igb_free_all_tx_resources(struct igb_adapter *); | |
82 | static void igb_free_all_rx_resources(struct igb_adapter *); | |
9d5c8243 AK |
83 | void igb_update_stats(struct igb_adapter *); |
84 | static int igb_probe(struct pci_dev *, const struct pci_device_id *); | |
85 | static void __devexit igb_remove(struct pci_dev *pdev); | |
86 | static int igb_sw_init(struct igb_adapter *); | |
87 | static int igb_open(struct net_device *); | |
88 | static int igb_close(struct net_device *); | |
89 | static void igb_configure_tx(struct igb_adapter *); | |
90 | static void igb_configure_rx(struct igb_adapter *); | |
91 | static void igb_setup_rctl(struct igb_adapter *); | |
92 | static void igb_clean_all_tx_rings(struct igb_adapter *); | |
93 | static void igb_clean_all_rx_rings(struct igb_adapter *); | |
3b644cf6 MW |
94 | static void igb_clean_tx_ring(struct igb_ring *); |
95 | static void igb_clean_rx_ring(struct igb_ring *); | |
9d5c8243 AK |
96 | static void igb_set_multi(struct net_device *); |
97 | static void igb_update_phy_info(unsigned long); | |
98 | static void igb_watchdog(unsigned long); | |
99 | static void igb_watchdog_task(struct work_struct *); | |
100 | static int igb_xmit_frame_ring_adv(struct sk_buff *, struct net_device *, | |
101 | struct igb_ring *); | |
102 | static int igb_xmit_frame_adv(struct sk_buff *skb, struct net_device *); | |
103 | static struct net_device_stats *igb_get_stats(struct net_device *); | |
104 | static int igb_change_mtu(struct net_device *, int); | |
105 | static int igb_set_mac(struct net_device *, void *); | |
106 | static irqreturn_t igb_intr(int irq, void *); | |
107 | static irqreturn_t igb_intr_msi(int irq, void *); | |
108 | static irqreturn_t igb_msix_other(int irq, void *); | |
109 | static irqreturn_t igb_msix_rx(int irq, void *); | |
110 | static irqreturn_t igb_msix_tx(int irq, void *); | |
421e02f0 | 111 | #ifdef CONFIG_IGB_DCA |
fe4506b6 JC |
112 | static void igb_update_rx_dca(struct igb_ring *); |
113 | static void igb_update_tx_dca(struct igb_ring *); | |
114 | static void igb_setup_dca(struct igb_adapter *); | |
421e02f0 | 115 | #endif /* CONFIG_IGB_DCA */ |
3b644cf6 | 116 | static bool igb_clean_tx_irq(struct igb_ring *); |
661086df | 117 | static int igb_poll(struct napi_struct *, int); |
3b644cf6 MW |
118 | static bool igb_clean_rx_irq_adv(struct igb_ring *, int *, int); |
119 | static void igb_alloc_rx_buffers_adv(struct igb_ring *, int); | |
9d5c8243 AK |
120 | static int igb_ioctl(struct net_device *, struct ifreq *, int cmd); |
121 | static void igb_tx_timeout(struct net_device *); | |
122 | static void igb_reset_task(struct work_struct *); | |
123 | static void igb_vlan_rx_register(struct net_device *, struct vlan_group *); | |
124 | static void igb_vlan_rx_add_vid(struct net_device *, u16); | |
125 | static void igb_vlan_rx_kill_vid(struct net_device *, u16); | |
126 | static void igb_restore_vlan(struct igb_adapter *); | |
4ae196df AD |
127 | static void igb_ping_all_vfs(struct igb_adapter *); |
128 | static void igb_msg_task(struct igb_adapter *); | |
129 | static int igb_rcv_msg_from_vf(struct igb_adapter *, u32); | |
e1739522 AD |
130 | static inline void igb_set_rah_pool(struct e1000_hw *, int , int); |
131 | static void igb_set_mc_list_pools(struct igb_adapter *, int, u16); | |
4ae196df | 132 | static void igb_vmm_control(struct igb_adapter *); |
e1739522 | 133 | static inline void igb_set_vmolr(struct e1000_hw *, int); |
4ae196df AD |
134 | static inline int igb_set_vf_rlpml(struct igb_adapter *, int, int); |
135 | static int igb_set_vf_mac(struct igb_adapter *adapter, int, unsigned char *); | |
136 | static void igb_restore_vf_multicasts(struct igb_adapter *adapter); | |
9d5c8243 AK |
137 | |
138 | static int igb_suspend(struct pci_dev *, pm_message_t); | |
139 | #ifdef CONFIG_PM | |
140 | static int igb_resume(struct pci_dev *); | |
141 | #endif | |
142 | static void igb_shutdown(struct pci_dev *); | |
421e02f0 | 143 | #ifdef CONFIG_IGB_DCA |
fe4506b6 JC |
144 | static int igb_notify_dca(struct notifier_block *, unsigned long, void *); |
145 | static struct notifier_block dca_notifier = { | |
146 | .notifier_call = igb_notify_dca, | |
147 | .next = NULL, | |
148 | .priority = 0 | |
149 | }; | |
150 | #endif | |
9d5c8243 AK |
151 | #ifdef CONFIG_NET_POLL_CONTROLLER |
152 | /* for netdump / net console */ | |
153 | static void igb_netpoll(struct net_device *); | |
154 | #endif | |
155 | ||
37680117 AD |
156 | #ifdef CONFIG_PCI_IOV |
157 | static ssize_t igb_set_num_vfs(struct device *, struct device_attribute *, | |
158 | const char *, size_t); | |
159 | static ssize_t igb_show_num_vfs(struct device *, struct device_attribute *, | |
160 | char *); | |
161 | DEVICE_ATTR(num_vfs, S_IRUGO | S_IWUSR, igb_show_num_vfs, igb_set_num_vfs); | |
162 | #endif | |
9d5c8243 AK |
163 | static pci_ers_result_t igb_io_error_detected(struct pci_dev *, |
164 | pci_channel_state_t); | |
165 | static pci_ers_result_t igb_io_slot_reset(struct pci_dev *); | |
166 | static void igb_io_resume(struct pci_dev *); | |
167 | ||
168 | static struct pci_error_handlers igb_err_handler = { | |
169 | .error_detected = igb_io_error_detected, | |
170 | .slot_reset = igb_io_slot_reset, | |
171 | .resume = igb_io_resume, | |
172 | }; | |
173 | ||
174 | ||
175 | static struct pci_driver igb_driver = { | |
176 | .name = igb_driver_name, | |
177 | .id_table = igb_pci_tbl, | |
178 | .probe = igb_probe, | |
179 | .remove = __devexit_p(igb_remove), | |
180 | #ifdef CONFIG_PM | |
181 | /* Power Managment Hooks */ | |
182 | .suspend = igb_suspend, | |
183 | .resume = igb_resume, | |
184 | #endif | |
185 | .shutdown = igb_shutdown, | |
186 | .err_handler = &igb_err_handler | |
187 | }; | |
188 | ||
7dfc16fa AD |
189 | static int global_quad_port_a; /* global quad port a indication */ |
190 | ||
9d5c8243 AK |
191 | MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>"); |
192 | MODULE_DESCRIPTION("Intel(R) Gigabit Ethernet Network Driver"); | |
193 | MODULE_LICENSE("GPL"); | |
194 | MODULE_VERSION(DRV_VERSION); | |
195 | ||
38c845c7 PO |
196 | /** |
197 | * Scale the NIC clock cycle by a large factor so that | |
198 | * relatively small clock corrections can be added or | |
199 | * substracted at each clock tick. The drawbacks of a | |
200 | * large factor are a) that the clock register overflows | |
201 | * more quickly (not such a big deal) and b) that the | |
202 | * increment per tick has to fit into 24 bits. | |
203 | * | |
204 | * Note that | |
205 | * TIMINCA = IGB_TSYNC_CYCLE_TIME_IN_NANOSECONDS * | |
206 | * IGB_TSYNC_SCALE | |
207 | * TIMINCA += TIMINCA * adjustment [ppm] / 1e9 | |
208 | * | |
209 | * The base scale factor is intentionally a power of two | |
210 | * so that the division in %struct timecounter can be done with | |
211 | * a shift. | |
212 | */ | |
213 | #define IGB_TSYNC_SHIFT (19) | |
214 | #define IGB_TSYNC_SCALE (1<<IGB_TSYNC_SHIFT) | |
215 | ||
216 | /** | |
217 | * The duration of one clock cycle of the NIC. | |
218 | * | |
219 | * @todo This hard-coded value is part of the specification and might change | |
220 | * in future hardware revisions. Add revision check. | |
221 | */ | |
222 | #define IGB_TSYNC_CYCLE_TIME_IN_NANOSECONDS 16 | |
223 | ||
224 | #if (IGB_TSYNC_SCALE * IGB_TSYNC_CYCLE_TIME_IN_NANOSECONDS) >= (1<<24) | |
225 | # error IGB_TSYNC_SCALE and/or IGB_TSYNC_CYCLE_TIME_IN_NANOSECONDS are too large to fit into TIMINCA | |
226 | #endif | |
227 | ||
228 | /** | |
229 | * igb_read_clock - read raw cycle counter (to be used by time counter) | |
230 | */ | |
231 | static cycle_t igb_read_clock(const struct cyclecounter *tc) | |
232 | { | |
233 | struct igb_adapter *adapter = | |
234 | container_of(tc, struct igb_adapter, cycles); | |
235 | struct e1000_hw *hw = &adapter->hw; | |
236 | u64 stamp; | |
237 | ||
238 | stamp = rd32(E1000_SYSTIML); | |
239 | stamp |= (u64)rd32(E1000_SYSTIMH) << 32ULL; | |
240 | ||
241 | return stamp; | |
242 | } | |
243 | ||
9d5c8243 AK |
244 | #ifdef DEBUG |
245 | /** | |
246 | * igb_get_hw_dev_name - return device name string | |
247 | * used by hardware layer to print debugging information | |
248 | **/ | |
249 | char *igb_get_hw_dev_name(struct e1000_hw *hw) | |
250 | { | |
251 | struct igb_adapter *adapter = hw->back; | |
252 | return adapter->netdev->name; | |
253 | } | |
38c845c7 PO |
254 | |
255 | /** | |
256 | * igb_get_time_str - format current NIC and system time as string | |
257 | */ | |
258 | static char *igb_get_time_str(struct igb_adapter *adapter, | |
259 | char buffer[160]) | |
260 | { | |
261 | cycle_t hw = adapter->cycles.read(&adapter->cycles); | |
262 | struct timespec nic = ns_to_timespec(timecounter_read(&adapter->clock)); | |
263 | struct timespec sys; | |
264 | struct timespec delta; | |
265 | getnstimeofday(&sys); | |
266 | ||
267 | delta = timespec_sub(nic, sys); | |
268 | ||
269 | sprintf(buffer, | |
33af6bcc PO |
270 | "HW %llu, NIC %ld.%09lus, SYS %ld.%09lus, NIC-SYS %lds + %09luns", |
271 | hw, | |
38c845c7 PO |
272 | (long)nic.tv_sec, nic.tv_nsec, |
273 | (long)sys.tv_sec, sys.tv_nsec, | |
274 | (long)delta.tv_sec, delta.tv_nsec); | |
275 | ||
276 | return buffer; | |
277 | } | |
9d5c8243 AK |
278 | #endif |
279 | ||
280 | /** | |
281 | * igb_init_module - Driver Registration Routine | |
282 | * | |
283 | * igb_init_module is the first routine called when the driver is | |
284 | * loaded. All it does is register with the PCI subsystem. | |
285 | **/ | |
286 | static int __init igb_init_module(void) | |
287 | { | |
288 | int ret; | |
289 | printk(KERN_INFO "%s - version %s\n", | |
290 | igb_driver_string, igb_driver_version); | |
291 | ||
292 | printk(KERN_INFO "%s\n", igb_copyright); | |
293 | ||
7dfc16fa AD |
294 | global_quad_port_a = 0; |
295 | ||
421e02f0 | 296 | #ifdef CONFIG_IGB_DCA |
fe4506b6 JC |
297 | dca_register_notify(&dca_notifier); |
298 | #endif | |
bbd98fe4 AD |
299 | |
300 | ret = pci_register_driver(&igb_driver); | |
9d5c8243 AK |
301 | return ret; |
302 | } | |
303 | ||
304 | module_init(igb_init_module); | |
305 | ||
306 | /** | |
307 | * igb_exit_module - Driver Exit Cleanup Routine | |
308 | * | |
309 | * igb_exit_module is called just before the driver is removed | |
310 | * from memory. | |
311 | **/ | |
312 | static void __exit igb_exit_module(void) | |
313 | { | |
421e02f0 | 314 | #ifdef CONFIG_IGB_DCA |
fe4506b6 JC |
315 | dca_unregister_notify(&dca_notifier); |
316 | #endif | |
9d5c8243 AK |
317 | pci_unregister_driver(&igb_driver); |
318 | } | |
319 | ||
320 | module_exit(igb_exit_module); | |
321 | ||
26bc19ec AD |
322 | #define Q_IDX_82576(i) (((i & 0x1) << 3) + (i >> 1)) |
323 | /** | |
324 | * igb_cache_ring_register - Descriptor ring to register mapping | |
325 | * @adapter: board private structure to initialize | |
326 | * | |
327 | * Once we know the feature-set enabled for the device, we'll cache | |
328 | * the register offset the descriptor ring is assigned to. | |
329 | **/ | |
330 | static void igb_cache_ring_register(struct igb_adapter *adapter) | |
331 | { | |
332 | int i; | |
1bfaf07b | 333 | unsigned int rbase_offset = adapter->vfs_allocated_count; |
26bc19ec AD |
334 | |
335 | switch (adapter->hw.mac.type) { | |
336 | case e1000_82576: | |
337 | /* The queues are allocated for virtualization such that VF 0 | |
338 | * is allocated queues 0 and 8, VF 1 queues 1 and 9, etc. | |
339 | * In order to avoid collision we start at the first free queue | |
340 | * and continue consuming queues in the same sequence | |
341 | */ | |
342 | for (i = 0; i < adapter->num_rx_queues; i++) | |
1bfaf07b AD |
343 | adapter->rx_ring[i].reg_idx = rbase_offset + |
344 | Q_IDX_82576(i); | |
26bc19ec | 345 | for (i = 0; i < adapter->num_tx_queues; i++) |
1bfaf07b AD |
346 | adapter->tx_ring[i].reg_idx = rbase_offset + |
347 | Q_IDX_82576(i); | |
26bc19ec AD |
348 | break; |
349 | case e1000_82575: | |
350 | default: | |
351 | for (i = 0; i < adapter->num_rx_queues; i++) | |
352 | adapter->rx_ring[i].reg_idx = i; | |
353 | for (i = 0; i < adapter->num_tx_queues; i++) | |
354 | adapter->tx_ring[i].reg_idx = i; | |
355 | break; | |
356 | } | |
357 | } | |
358 | ||
9d5c8243 AK |
359 | /** |
360 | * igb_alloc_queues - Allocate memory for all rings | |
361 | * @adapter: board private structure to initialize | |
362 | * | |
363 | * We allocate one ring per queue at run-time since we don't know the | |
364 | * number of queues at compile-time. | |
365 | **/ | |
366 | static int igb_alloc_queues(struct igb_adapter *adapter) | |
367 | { | |
368 | int i; | |
369 | ||
370 | adapter->tx_ring = kcalloc(adapter->num_tx_queues, | |
371 | sizeof(struct igb_ring), GFP_KERNEL); | |
372 | if (!adapter->tx_ring) | |
373 | return -ENOMEM; | |
374 | ||
375 | adapter->rx_ring = kcalloc(adapter->num_rx_queues, | |
376 | sizeof(struct igb_ring), GFP_KERNEL); | |
377 | if (!adapter->rx_ring) { | |
378 | kfree(adapter->tx_ring); | |
379 | return -ENOMEM; | |
380 | } | |
381 | ||
6eb5a7f1 AD |
382 | adapter->rx_ring->buddy = adapter->tx_ring; |
383 | ||
661086df PWJ |
384 | for (i = 0; i < adapter->num_tx_queues; i++) { |
385 | struct igb_ring *ring = &(adapter->tx_ring[i]); | |
68fd9910 | 386 | ring->count = adapter->tx_ring_count; |
661086df PWJ |
387 | ring->adapter = adapter; |
388 | ring->queue_index = i; | |
389 | } | |
9d5c8243 AK |
390 | for (i = 0; i < adapter->num_rx_queues; i++) { |
391 | struct igb_ring *ring = &(adapter->rx_ring[i]); | |
68fd9910 | 392 | ring->count = adapter->rx_ring_count; |
9d5c8243 | 393 | ring->adapter = adapter; |
844290e5 | 394 | ring->queue_index = i; |
9d5c8243 AK |
395 | ring->itr_register = E1000_ITR; |
396 | ||
844290e5 | 397 | /* set a default napi handler for each rx_ring */ |
661086df | 398 | netif_napi_add(adapter->netdev, &ring->napi, igb_poll, 64); |
9d5c8243 | 399 | } |
26bc19ec AD |
400 | |
401 | igb_cache_ring_register(adapter); | |
9d5c8243 AK |
402 | return 0; |
403 | } | |
404 | ||
a88f10ec AD |
405 | static void igb_free_queues(struct igb_adapter *adapter) |
406 | { | |
407 | int i; | |
408 | ||
409 | for (i = 0; i < adapter->num_rx_queues; i++) | |
410 | netif_napi_del(&adapter->rx_ring[i].napi); | |
411 | ||
412 | kfree(adapter->tx_ring); | |
413 | kfree(adapter->rx_ring); | |
414 | } | |
415 | ||
9d5c8243 AK |
416 | #define IGB_N0_QUEUE -1 |
417 | static void igb_assign_vector(struct igb_adapter *adapter, int rx_queue, | |
418 | int tx_queue, int msix_vector) | |
419 | { | |
420 | u32 msixbm = 0; | |
421 | struct e1000_hw *hw = &adapter->hw; | |
2d064c06 AD |
422 | u32 ivar, index; |
423 | ||
424 | switch (hw->mac.type) { | |
425 | case e1000_82575: | |
9d5c8243 AK |
426 | /* The 82575 assigns vectors using a bitmask, which matches the |
427 | bitmask for the EICR/EIMS/EIMC registers. To assign one | |
428 | or more queues to a vector, we write the appropriate bits | |
429 | into the MSIXBM register for that vector. */ | |
430 | if (rx_queue > IGB_N0_QUEUE) { | |
431 | msixbm = E1000_EICR_RX_QUEUE0 << rx_queue; | |
432 | adapter->rx_ring[rx_queue].eims_value = msixbm; | |
433 | } | |
434 | if (tx_queue > IGB_N0_QUEUE) { | |
435 | msixbm |= E1000_EICR_TX_QUEUE0 << tx_queue; | |
436 | adapter->tx_ring[tx_queue].eims_value = | |
437 | E1000_EICR_TX_QUEUE0 << tx_queue; | |
438 | } | |
439 | array_wr32(E1000_MSIXBM(0), msix_vector, msixbm); | |
2d064c06 AD |
440 | break; |
441 | case e1000_82576: | |
26bc19ec | 442 | /* 82576 uses a table-based method for assigning vectors. |
2d064c06 AD |
443 | Each queue has a single entry in the table to which we write |
444 | a vector number along with a "valid" bit. Sadly, the layout | |
445 | of the table is somewhat counterintuitive. */ | |
446 | if (rx_queue > IGB_N0_QUEUE) { | |
1bfaf07b | 447 | index = (rx_queue >> 1) + adapter->vfs_allocated_count; |
2d064c06 | 448 | ivar = array_rd32(E1000_IVAR0, index); |
26bc19ec | 449 | if (rx_queue & 0x1) { |
2d064c06 AD |
450 | /* vector goes into third byte of register */ |
451 | ivar = ivar & 0xFF00FFFF; | |
452 | ivar |= (msix_vector | E1000_IVAR_VALID) << 16; | |
26bc19ec AD |
453 | } else { |
454 | /* vector goes into low byte of register */ | |
455 | ivar = ivar & 0xFFFFFF00; | |
456 | ivar |= msix_vector | E1000_IVAR_VALID; | |
2d064c06 AD |
457 | } |
458 | adapter->rx_ring[rx_queue].eims_value= 1 << msix_vector; | |
459 | array_wr32(E1000_IVAR0, index, ivar); | |
460 | } | |
461 | if (tx_queue > IGB_N0_QUEUE) { | |
1bfaf07b | 462 | index = (tx_queue >> 1) + adapter->vfs_allocated_count; |
2d064c06 | 463 | ivar = array_rd32(E1000_IVAR0, index); |
26bc19ec | 464 | if (tx_queue & 0x1) { |
2d064c06 AD |
465 | /* vector goes into high byte of register */ |
466 | ivar = ivar & 0x00FFFFFF; | |
467 | ivar |= (msix_vector | E1000_IVAR_VALID) << 24; | |
26bc19ec AD |
468 | } else { |
469 | /* vector goes into second byte of register */ | |
470 | ivar = ivar & 0xFFFF00FF; | |
471 | ivar |= (msix_vector | E1000_IVAR_VALID) << 8; | |
2d064c06 AD |
472 | } |
473 | adapter->tx_ring[tx_queue].eims_value= 1 << msix_vector; | |
474 | array_wr32(E1000_IVAR0, index, ivar); | |
475 | } | |
476 | break; | |
477 | default: | |
478 | BUG(); | |
479 | break; | |
480 | } | |
9d5c8243 AK |
481 | } |
482 | ||
483 | /** | |
484 | * igb_configure_msix - Configure MSI-X hardware | |
485 | * | |
486 | * igb_configure_msix sets up the hardware to properly | |
487 | * generate MSI-X interrupts. | |
488 | **/ | |
489 | static void igb_configure_msix(struct igb_adapter *adapter) | |
490 | { | |
491 | u32 tmp; | |
492 | int i, vector = 0; | |
493 | struct e1000_hw *hw = &adapter->hw; | |
494 | ||
495 | adapter->eims_enable_mask = 0; | |
2d064c06 AD |
496 | if (hw->mac.type == e1000_82576) |
497 | /* Turn on MSI-X capability first, or our settings | |
498 | * won't stick. And it will take days to debug. */ | |
499 | wr32(E1000_GPIE, E1000_GPIE_MSIX_MODE | | |
eebbbdba | 500 | E1000_GPIE_PBA | E1000_GPIE_EIAME | |
2d064c06 | 501 | E1000_GPIE_NSICR); |
9d5c8243 AK |
502 | |
503 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
504 | struct igb_ring *tx_ring = &adapter->tx_ring[i]; | |
505 | igb_assign_vector(adapter, IGB_N0_QUEUE, i, vector++); | |
506 | adapter->eims_enable_mask |= tx_ring->eims_value; | |
507 | if (tx_ring->itr_val) | |
6eb5a7f1 | 508 | writel(tx_ring->itr_val, |
9d5c8243 AK |
509 | hw->hw_addr + tx_ring->itr_register); |
510 | else | |
511 | writel(1, hw->hw_addr + tx_ring->itr_register); | |
512 | } | |
513 | ||
514 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
515 | struct igb_ring *rx_ring = &adapter->rx_ring[i]; | |
25ac3c24 | 516 | rx_ring->buddy = NULL; |
9d5c8243 AK |
517 | igb_assign_vector(adapter, i, IGB_N0_QUEUE, vector++); |
518 | adapter->eims_enable_mask |= rx_ring->eims_value; | |
519 | if (rx_ring->itr_val) | |
6eb5a7f1 | 520 | writel(rx_ring->itr_val, |
9d5c8243 AK |
521 | hw->hw_addr + rx_ring->itr_register); |
522 | else | |
523 | writel(1, hw->hw_addr + rx_ring->itr_register); | |
524 | } | |
525 | ||
526 | ||
527 | /* set vector for other causes, i.e. link changes */ | |
2d064c06 AD |
528 | switch (hw->mac.type) { |
529 | case e1000_82575: | |
9d5c8243 AK |
530 | array_wr32(E1000_MSIXBM(0), vector++, |
531 | E1000_EIMS_OTHER); | |
532 | ||
9d5c8243 AK |
533 | tmp = rd32(E1000_CTRL_EXT); |
534 | /* enable MSI-X PBA support*/ | |
535 | tmp |= E1000_CTRL_EXT_PBA_CLR; | |
536 | ||
537 | /* Auto-Mask interrupts upon ICR read. */ | |
538 | tmp |= E1000_CTRL_EXT_EIAME; | |
539 | tmp |= E1000_CTRL_EXT_IRCA; | |
540 | ||
541 | wr32(E1000_CTRL_EXT, tmp); | |
542 | adapter->eims_enable_mask |= E1000_EIMS_OTHER; | |
844290e5 | 543 | adapter->eims_other = E1000_EIMS_OTHER; |
9d5c8243 | 544 | |
2d064c06 AD |
545 | break; |
546 | ||
547 | case e1000_82576: | |
548 | tmp = (vector++ | E1000_IVAR_VALID) << 8; | |
549 | wr32(E1000_IVAR_MISC, tmp); | |
550 | ||
551 | adapter->eims_enable_mask = (1 << (vector)) - 1; | |
552 | adapter->eims_other = 1 << (vector - 1); | |
553 | break; | |
554 | default: | |
555 | /* do nothing, since nothing else supports MSI-X */ | |
556 | break; | |
557 | } /* switch (hw->mac.type) */ | |
9d5c8243 AK |
558 | wrfl(); |
559 | } | |
560 | ||
561 | /** | |
562 | * igb_request_msix - Initialize MSI-X interrupts | |
563 | * | |
564 | * igb_request_msix allocates MSI-X vectors and requests interrupts from the | |
565 | * kernel. | |
566 | **/ | |
567 | static int igb_request_msix(struct igb_adapter *adapter) | |
568 | { | |
569 | struct net_device *netdev = adapter->netdev; | |
570 | int i, err = 0, vector = 0; | |
571 | ||
572 | vector = 0; | |
573 | ||
574 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
575 | struct igb_ring *ring = &(adapter->tx_ring[i]); | |
cb7b48f6 | 576 | sprintf(ring->name, "%s-tx-%d", netdev->name, i); |
9d5c8243 AK |
577 | err = request_irq(adapter->msix_entries[vector].vector, |
578 | &igb_msix_tx, 0, ring->name, | |
579 | &(adapter->tx_ring[i])); | |
580 | if (err) | |
581 | goto out; | |
582 | ring->itr_register = E1000_EITR(0) + (vector << 2); | |
6eb5a7f1 | 583 | ring->itr_val = 976; /* ~4000 ints/sec */ |
9d5c8243 AK |
584 | vector++; |
585 | } | |
586 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
587 | struct igb_ring *ring = &(adapter->rx_ring[i]); | |
588 | if (strlen(netdev->name) < (IFNAMSIZ - 5)) | |
cb7b48f6 | 589 | sprintf(ring->name, "%s-rx-%d", netdev->name, i); |
9d5c8243 AK |
590 | else |
591 | memcpy(ring->name, netdev->name, IFNAMSIZ); | |
592 | err = request_irq(adapter->msix_entries[vector].vector, | |
593 | &igb_msix_rx, 0, ring->name, | |
594 | &(adapter->rx_ring[i])); | |
595 | if (err) | |
596 | goto out; | |
597 | ring->itr_register = E1000_EITR(0) + (vector << 2); | |
598 | ring->itr_val = adapter->itr; | |
599 | vector++; | |
600 | } | |
601 | ||
602 | err = request_irq(adapter->msix_entries[vector].vector, | |
603 | &igb_msix_other, 0, netdev->name, netdev); | |
604 | if (err) | |
605 | goto out; | |
606 | ||
9d5c8243 AK |
607 | igb_configure_msix(adapter); |
608 | return 0; | |
609 | out: | |
610 | return err; | |
611 | } | |
612 | ||
613 | static void igb_reset_interrupt_capability(struct igb_adapter *adapter) | |
614 | { | |
615 | if (adapter->msix_entries) { | |
616 | pci_disable_msix(adapter->pdev); | |
617 | kfree(adapter->msix_entries); | |
618 | adapter->msix_entries = NULL; | |
7dfc16fa | 619 | } else if (adapter->flags & IGB_FLAG_HAS_MSI) |
9d5c8243 AK |
620 | pci_disable_msi(adapter->pdev); |
621 | return; | |
622 | } | |
623 | ||
624 | ||
625 | /** | |
626 | * igb_set_interrupt_capability - set MSI or MSI-X if supported | |
627 | * | |
628 | * Attempt to configure interrupts using the best available | |
629 | * capabilities of the hardware and kernel. | |
630 | **/ | |
631 | static void igb_set_interrupt_capability(struct igb_adapter *adapter) | |
632 | { | |
633 | int err; | |
634 | int numvecs, i; | |
635 | ||
83b7180d AD |
636 | /* Number of supported queues. */ |
637 | /* Having more queues than CPUs doesn't make sense. */ | |
638 | adapter->num_rx_queues = min_t(u32, IGB_MAX_RX_QUEUES, num_online_cpus()); | |
639 | adapter->num_tx_queues = min_t(u32, IGB_MAX_TX_QUEUES, num_online_cpus()); | |
640 | ||
9d5c8243 AK |
641 | numvecs = adapter->num_tx_queues + adapter->num_rx_queues + 1; |
642 | adapter->msix_entries = kcalloc(numvecs, sizeof(struct msix_entry), | |
643 | GFP_KERNEL); | |
644 | if (!adapter->msix_entries) | |
645 | goto msi_only; | |
646 | ||
647 | for (i = 0; i < numvecs; i++) | |
648 | adapter->msix_entries[i].entry = i; | |
649 | ||
650 | err = pci_enable_msix(adapter->pdev, | |
651 | adapter->msix_entries, | |
652 | numvecs); | |
653 | if (err == 0) | |
34a20e89 | 654 | goto out; |
9d5c8243 AK |
655 | |
656 | igb_reset_interrupt_capability(adapter); | |
657 | ||
658 | /* If we can't do MSI-X, try MSI */ | |
659 | msi_only: | |
660 | adapter->num_rx_queues = 1; | |
661086df | 661 | adapter->num_tx_queues = 1; |
9d5c8243 | 662 | if (!pci_enable_msi(adapter->pdev)) |
7dfc16fa | 663 | adapter->flags |= IGB_FLAG_HAS_MSI; |
34a20e89 | 664 | out: |
661086df | 665 | /* Notify the stack of the (possibly) reduced Tx Queue count. */ |
fd2ea0a7 | 666 | adapter->netdev->real_num_tx_queues = adapter->num_tx_queues; |
9d5c8243 AK |
667 | return; |
668 | } | |
669 | ||
670 | /** | |
671 | * igb_request_irq - initialize interrupts | |
672 | * | |
673 | * Attempts to configure interrupts using the best available | |
674 | * capabilities of the hardware and kernel. | |
675 | **/ | |
676 | static int igb_request_irq(struct igb_adapter *adapter) | |
677 | { | |
678 | struct net_device *netdev = adapter->netdev; | |
679 | struct e1000_hw *hw = &adapter->hw; | |
680 | int err = 0; | |
681 | ||
682 | if (adapter->msix_entries) { | |
683 | err = igb_request_msix(adapter); | |
844290e5 | 684 | if (!err) |
9d5c8243 | 685 | goto request_done; |
9d5c8243 AK |
686 | /* fall back to MSI */ |
687 | igb_reset_interrupt_capability(adapter); | |
688 | if (!pci_enable_msi(adapter->pdev)) | |
7dfc16fa | 689 | adapter->flags |= IGB_FLAG_HAS_MSI; |
9d5c8243 AK |
690 | igb_free_all_tx_resources(adapter); |
691 | igb_free_all_rx_resources(adapter); | |
692 | adapter->num_rx_queues = 1; | |
693 | igb_alloc_queues(adapter); | |
844290e5 | 694 | } else { |
2d064c06 AD |
695 | switch (hw->mac.type) { |
696 | case e1000_82575: | |
697 | wr32(E1000_MSIXBM(0), | |
698 | (E1000_EICR_RX_QUEUE0 | E1000_EIMS_OTHER)); | |
699 | break; | |
700 | case e1000_82576: | |
701 | wr32(E1000_IVAR0, E1000_IVAR_VALID); | |
702 | break; | |
703 | default: | |
704 | break; | |
705 | } | |
9d5c8243 | 706 | } |
844290e5 | 707 | |
7dfc16fa | 708 | if (adapter->flags & IGB_FLAG_HAS_MSI) { |
9d5c8243 AK |
709 | err = request_irq(adapter->pdev->irq, &igb_intr_msi, 0, |
710 | netdev->name, netdev); | |
711 | if (!err) | |
712 | goto request_done; | |
713 | /* fall back to legacy interrupts */ | |
714 | igb_reset_interrupt_capability(adapter); | |
7dfc16fa | 715 | adapter->flags &= ~IGB_FLAG_HAS_MSI; |
9d5c8243 AK |
716 | } |
717 | ||
718 | err = request_irq(adapter->pdev->irq, &igb_intr, IRQF_SHARED, | |
719 | netdev->name, netdev); | |
720 | ||
6cb5e577 | 721 | if (err) |
9d5c8243 AK |
722 | dev_err(&adapter->pdev->dev, "Error %d getting interrupt\n", |
723 | err); | |
9d5c8243 AK |
724 | |
725 | request_done: | |
726 | return err; | |
727 | } | |
728 | ||
729 | static void igb_free_irq(struct igb_adapter *adapter) | |
730 | { | |
731 | struct net_device *netdev = adapter->netdev; | |
732 | ||
733 | if (adapter->msix_entries) { | |
734 | int vector = 0, i; | |
735 | ||
736 | for (i = 0; i < adapter->num_tx_queues; i++) | |
737 | free_irq(adapter->msix_entries[vector++].vector, | |
738 | &(adapter->tx_ring[i])); | |
739 | for (i = 0; i < adapter->num_rx_queues; i++) | |
740 | free_irq(adapter->msix_entries[vector++].vector, | |
741 | &(adapter->rx_ring[i])); | |
742 | ||
743 | free_irq(adapter->msix_entries[vector++].vector, netdev); | |
744 | return; | |
745 | } | |
746 | ||
747 | free_irq(adapter->pdev->irq, netdev); | |
748 | } | |
749 | ||
750 | /** | |
751 | * igb_irq_disable - Mask off interrupt generation on the NIC | |
752 | * @adapter: board private structure | |
753 | **/ | |
754 | static void igb_irq_disable(struct igb_adapter *adapter) | |
755 | { | |
756 | struct e1000_hw *hw = &adapter->hw; | |
757 | ||
758 | if (adapter->msix_entries) { | |
844290e5 | 759 | wr32(E1000_EIAM, 0); |
9d5c8243 AK |
760 | wr32(E1000_EIMC, ~0); |
761 | wr32(E1000_EIAC, 0); | |
762 | } | |
844290e5 PW |
763 | |
764 | wr32(E1000_IAM, 0); | |
9d5c8243 AK |
765 | wr32(E1000_IMC, ~0); |
766 | wrfl(); | |
767 | synchronize_irq(adapter->pdev->irq); | |
768 | } | |
769 | ||
770 | /** | |
771 | * igb_irq_enable - Enable default interrupt generation settings | |
772 | * @adapter: board private structure | |
773 | **/ | |
774 | static void igb_irq_enable(struct igb_adapter *adapter) | |
775 | { | |
776 | struct e1000_hw *hw = &adapter->hw; | |
777 | ||
778 | if (adapter->msix_entries) { | |
844290e5 PW |
779 | wr32(E1000_EIAC, adapter->eims_enable_mask); |
780 | wr32(E1000_EIAM, adapter->eims_enable_mask); | |
781 | wr32(E1000_EIMS, adapter->eims_enable_mask); | |
4ae196df AD |
782 | if (adapter->vfs_allocated_count) |
783 | wr32(E1000_MBVFIMR, 0xFF); | |
784 | wr32(E1000_IMS, (E1000_IMS_LSC | E1000_IMS_VMMB | | |
785 | E1000_IMS_DOUTSYNC)); | |
844290e5 PW |
786 | } else { |
787 | wr32(E1000_IMS, IMS_ENABLE_MASK); | |
788 | wr32(E1000_IAM, IMS_ENABLE_MASK); | |
789 | } | |
9d5c8243 AK |
790 | } |
791 | ||
792 | static void igb_update_mng_vlan(struct igb_adapter *adapter) | |
793 | { | |
794 | struct net_device *netdev = adapter->netdev; | |
795 | u16 vid = adapter->hw.mng_cookie.vlan_id; | |
796 | u16 old_vid = adapter->mng_vlan_id; | |
797 | if (adapter->vlgrp) { | |
798 | if (!vlan_group_get_device(adapter->vlgrp, vid)) { | |
799 | if (adapter->hw.mng_cookie.status & | |
800 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN) { | |
801 | igb_vlan_rx_add_vid(netdev, vid); | |
802 | adapter->mng_vlan_id = vid; | |
803 | } else | |
804 | adapter->mng_vlan_id = IGB_MNG_VLAN_NONE; | |
805 | ||
806 | if ((old_vid != (u16)IGB_MNG_VLAN_NONE) && | |
807 | (vid != old_vid) && | |
808 | !vlan_group_get_device(adapter->vlgrp, old_vid)) | |
809 | igb_vlan_rx_kill_vid(netdev, old_vid); | |
810 | } else | |
811 | adapter->mng_vlan_id = vid; | |
812 | } | |
813 | } | |
814 | ||
815 | /** | |
816 | * igb_release_hw_control - release control of the h/w to f/w | |
817 | * @adapter: address of board private structure | |
818 | * | |
819 | * igb_release_hw_control resets CTRL_EXT:DRV_LOAD bit. | |
820 | * For ASF and Pass Through versions of f/w this means that the | |
821 | * driver is no longer loaded. | |
822 | * | |
823 | **/ | |
824 | static void igb_release_hw_control(struct igb_adapter *adapter) | |
825 | { | |
826 | struct e1000_hw *hw = &adapter->hw; | |
827 | u32 ctrl_ext; | |
828 | ||
829 | /* Let firmware take over control of h/w */ | |
830 | ctrl_ext = rd32(E1000_CTRL_EXT); | |
831 | wr32(E1000_CTRL_EXT, | |
832 | ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD); | |
833 | } | |
834 | ||
835 | ||
836 | /** | |
837 | * igb_get_hw_control - get control of the h/w from f/w | |
838 | * @adapter: address of board private structure | |
839 | * | |
840 | * igb_get_hw_control sets CTRL_EXT:DRV_LOAD bit. | |
841 | * For ASF and Pass Through versions of f/w this means that | |
842 | * the driver is loaded. | |
843 | * | |
844 | **/ | |
845 | static void igb_get_hw_control(struct igb_adapter *adapter) | |
846 | { | |
847 | struct e1000_hw *hw = &adapter->hw; | |
848 | u32 ctrl_ext; | |
849 | ||
850 | /* Let firmware know the driver has taken over */ | |
851 | ctrl_ext = rd32(E1000_CTRL_EXT); | |
852 | wr32(E1000_CTRL_EXT, | |
853 | ctrl_ext | E1000_CTRL_EXT_DRV_LOAD); | |
854 | } | |
855 | ||
9d5c8243 AK |
856 | /** |
857 | * igb_configure - configure the hardware for RX and TX | |
858 | * @adapter: private board structure | |
859 | **/ | |
860 | static void igb_configure(struct igb_adapter *adapter) | |
861 | { | |
862 | struct net_device *netdev = adapter->netdev; | |
863 | int i; | |
864 | ||
865 | igb_get_hw_control(adapter); | |
866 | igb_set_multi(netdev); | |
867 | ||
868 | igb_restore_vlan(adapter); | |
9d5c8243 AK |
869 | |
870 | igb_configure_tx(adapter); | |
871 | igb_setup_rctl(adapter); | |
872 | igb_configure_rx(adapter); | |
662d7205 AD |
873 | |
874 | igb_rx_fifo_flush_82575(&adapter->hw); | |
875 | ||
9d5c8243 AK |
876 | /* call IGB_DESC_UNUSED which always leaves |
877 | * at least 1 descriptor unused to make sure | |
878 | * next_to_use != next_to_clean */ | |
879 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
880 | struct igb_ring *ring = &adapter->rx_ring[i]; | |
3b644cf6 | 881 | igb_alloc_rx_buffers_adv(ring, IGB_DESC_UNUSED(ring)); |
9d5c8243 AK |
882 | } |
883 | ||
884 | ||
885 | adapter->tx_queue_len = netdev->tx_queue_len; | |
886 | } | |
887 | ||
888 | ||
889 | /** | |
890 | * igb_up - Open the interface and prepare it to handle traffic | |
891 | * @adapter: board private structure | |
892 | **/ | |
893 | ||
894 | int igb_up(struct igb_adapter *adapter) | |
895 | { | |
896 | struct e1000_hw *hw = &adapter->hw; | |
897 | int i; | |
898 | ||
899 | /* hardware has been reset, we need to reload some things */ | |
900 | igb_configure(adapter); | |
901 | ||
902 | clear_bit(__IGB_DOWN, &adapter->state); | |
903 | ||
844290e5 PW |
904 | for (i = 0; i < adapter->num_rx_queues; i++) |
905 | napi_enable(&adapter->rx_ring[i].napi); | |
906 | if (adapter->msix_entries) | |
9d5c8243 | 907 | igb_configure_msix(adapter); |
9d5c8243 | 908 | |
4ae196df | 909 | igb_vmm_control(adapter); |
e1739522 AD |
910 | igb_set_rah_pool(hw, adapter->vfs_allocated_count, 0); |
911 | igb_set_vmolr(hw, adapter->vfs_allocated_count); | |
912 | ||
9d5c8243 AK |
913 | /* Clear any pending interrupts. */ |
914 | rd32(E1000_ICR); | |
915 | igb_irq_enable(adapter); | |
916 | ||
917 | /* Fire a link change interrupt to start the watchdog. */ | |
918 | wr32(E1000_ICS, E1000_ICS_LSC); | |
919 | return 0; | |
920 | } | |
921 | ||
922 | void igb_down(struct igb_adapter *adapter) | |
923 | { | |
924 | struct e1000_hw *hw = &adapter->hw; | |
925 | struct net_device *netdev = adapter->netdev; | |
926 | u32 tctl, rctl; | |
927 | int i; | |
928 | ||
929 | /* signal that we're down so the interrupt handler does not | |
930 | * reschedule our watchdog timer */ | |
931 | set_bit(__IGB_DOWN, &adapter->state); | |
932 | ||
933 | /* disable receives in the hardware */ | |
934 | rctl = rd32(E1000_RCTL); | |
935 | wr32(E1000_RCTL, rctl & ~E1000_RCTL_EN); | |
936 | /* flush and sleep below */ | |
937 | ||
fd2ea0a7 | 938 | netif_tx_stop_all_queues(netdev); |
9d5c8243 AK |
939 | |
940 | /* disable transmits in the hardware */ | |
941 | tctl = rd32(E1000_TCTL); | |
942 | tctl &= ~E1000_TCTL_EN; | |
943 | wr32(E1000_TCTL, tctl); | |
944 | /* flush both disables and wait for them to finish */ | |
945 | wrfl(); | |
946 | msleep(10); | |
947 | ||
844290e5 PW |
948 | for (i = 0; i < adapter->num_rx_queues; i++) |
949 | napi_disable(&adapter->rx_ring[i].napi); | |
9d5c8243 | 950 | |
9d5c8243 AK |
951 | igb_irq_disable(adapter); |
952 | ||
953 | del_timer_sync(&adapter->watchdog_timer); | |
954 | del_timer_sync(&adapter->phy_info_timer); | |
955 | ||
956 | netdev->tx_queue_len = adapter->tx_queue_len; | |
957 | netif_carrier_off(netdev); | |
04fe6358 AD |
958 | |
959 | /* record the stats before reset*/ | |
960 | igb_update_stats(adapter); | |
961 | ||
9d5c8243 AK |
962 | adapter->link_speed = 0; |
963 | adapter->link_duplex = 0; | |
964 | ||
3023682e JK |
965 | if (!pci_channel_offline(adapter->pdev)) |
966 | igb_reset(adapter); | |
9d5c8243 AK |
967 | igb_clean_all_tx_rings(adapter); |
968 | igb_clean_all_rx_rings(adapter); | |
969 | } | |
970 | ||
971 | void igb_reinit_locked(struct igb_adapter *adapter) | |
972 | { | |
973 | WARN_ON(in_interrupt()); | |
974 | while (test_and_set_bit(__IGB_RESETTING, &adapter->state)) | |
975 | msleep(1); | |
976 | igb_down(adapter); | |
977 | igb_up(adapter); | |
978 | clear_bit(__IGB_RESETTING, &adapter->state); | |
979 | } | |
980 | ||
981 | void igb_reset(struct igb_adapter *adapter) | |
982 | { | |
983 | struct e1000_hw *hw = &adapter->hw; | |
2d064c06 AD |
984 | struct e1000_mac_info *mac = &hw->mac; |
985 | struct e1000_fc_info *fc = &hw->fc; | |
9d5c8243 AK |
986 | u32 pba = 0, tx_space, min_tx_space, min_rx_space; |
987 | u16 hwm; | |
988 | ||
989 | /* Repartition Pba for greater than 9k mtu | |
990 | * To take effect CTRL.RST is required. | |
991 | */ | |
fa4dfae0 AD |
992 | switch (mac->type) { |
993 | case e1000_82576: | |
2d064c06 | 994 | pba = E1000_PBA_64K; |
fa4dfae0 AD |
995 | break; |
996 | case e1000_82575: | |
997 | default: | |
998 | pba = E1000_PBA_34K; | |
999 | break; | |
2d064c06 | 1000 | } |
9d5c8243 | 1001 | |
2d064c06 AD |
1002 | if ((adapter->max_frame_size > ETH_FRAME_LEN + ETH_FCS_LEN) && |
1003 | (mac->type < e1000_82576)) { | |
9d5c8243 AK |
1004 | /* adjust PBA for jumbo frames */ |
1005 | wr32(E1000_PBA, pba); | |
1006 | ||
1007 | /* To maintain wire speed transmits, the Tx FIFO should be | |
1008 | * large enough to accommodate two full transmit packets, | |
1009 | * rounded up to the next 1KB and expressed in KB. Likewise, | |
1010 | * the Rx FIFO should be large enough to accommodate at least | |
1011 | * one full receive packet and is similarly rounded up and | |
1012 | * expressed in KB. */ | |
1013 | pba = rd32(E1000_PBA); | |
1014 | /* upper 16 bits has Tx packet buffer allocation size in KB */ | |
1015 | tx_space = pba >> 16; | |
1016 | /* lower 16 bits has Rx packet buffer allocation size in KB */ | |
1017 | pba &= 0xffff; | |
1018 | /* the tx fifo also stores 16 bytes of information about the tx | |
1019 | * but don't include ethernet FCS because hardware appends it */ | |
1020 | min_tx_space = (adapter->max_frame_size + | |
85e8d004 | 1021 | sizeof(union e1000_adv_tx_desc) - |
9d5c8243 AK |
1022 | ETH_FCS_LEN) * 2; |
1023 | min_tx_space = ALIGN(min_tx_space, 1024); | |
1024 | min_tx_space >>= 10; | |
1025 | /* software strips receive CRC, so leave room for it */ | |
1026 | min_rx_space = adapter->max_frame_size; | |
1027 | min_rx_space = ALIGN(min_rx_space, 1024); | |
1028 | min_rx_space >>= 10; | |
1029 | ||
1030 | /* If current Tx allocation is less than the min Tx FIFO size, | |
1031 | * and the min Tx FIFO size is less than the current Rx FIFO | |
1032 | * allocation, take space away from current Rx allocation */ | |
1033 | if (tx_space < min_tx_space && | |
1034 | ((min_tx_space - tx_space) < pba)) { | |
1035 | pba = pba - (min_tx_space - tx_space); | |
1036 | ||
1037 | /* if short on rx space, rx wins and must trump tx | |
1038 | * adjustment */ | |
1039 | if (pba < min_rx_space) | |
1040 | pba = min_rx_space; | |
1041 | } | |
2d064c06 | 1042 | wr32(E1000_PBA, pba); |
9d5c8243 | 1043 | } |
9d5c8243 AK |
1044 | |
1045 | /* flow control settings */ | |
1046 | /* The high water mark must be low enough to fit one full frame | |
1047 | * (or the size used for early receive) above it in the Rx FIFO. | |
1048 | * Set it to the lower of: | |
1049 | * - 90% of the Rx FIFO size, or | |
1050 | * - the full Rx FIFO size minus one full frame */ | |
1051 | hwm = min(((pba << 10) * 9 / 10), | |
2d064c06 | 1052 | ((pba << 10) - 2 * adapter->max_frame_size)); |
9d5c8243 | 1053 | |
2d064c06 AD |
1054 | if (mac->type < e1000_82576) { |
1055 | fc->high_water = hwm & 0xFFF8; /* 8-byte granularity */ | |
1056 | fc->low_water = fc->high_water - 8; | |
1057 | } else { | |
1058 | fc->high_water = hwm & 0xFFF0; /* 16-byte granularity */ | |
1059 | fc->low_water = fc->high_water - 16; | |
1060 | } | |
9d5c8243 AK |
1061 | fc->pause_time = 0xFFFF; |
1062 | fc->send_xon = 1; | |
1063 | fc->type = fc->original_type; | |
1064 | ||
4ae196df AD |
1065 | /* disable receive for all VFs and wait one second */ |
1066 | if (adapter->vfs_allocated_count) { | |
1067 | int i; | |
1068 | for (i = 0 ; i < adapter->vfs_allocated_count; i++) | |
1069 | adapter->vf_data[i].clear_to_send = false; | |
1070 | ||
1071 | /* ping all the active vfs to let them know we are going down */ | |
1072 | igb_ping_all_vfs(adapter); | |
1073 | ||
1074 | /* disable transmits and receives */ | |
1075 | wr32(E1000_VFRE, 0); | |
1076 | wr32(E1000_VFTE, 0); | |
1077 | } | |
1078 | ||
9d5c8243 AK |
1079 | /* Allow time for pending master requests to run */ |
1080 | adapter->hw.mac.ops.reset_hw(&adapter->hw); | |
1081 | wr32(E1000_WUC, 0); | |
1082 | ||
1083 | if (adapter->hw.mac.ops.init_hw(&adapter->hw)) | |
1084 | dev_err(&adapter->pdev->dev, "Hardware Error\n"); | |
1085 | ||
1086 | igb_update_mng_vlan(adapter); | |
1087 | ||
1088 | /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */ | |
1089 | wr32(E1000_VET, ETHERNET_IEEE_VLAN_TYPE); | |
1090 | ||
1091 | igb_reset_adaptive(&adapter->hw); | |
f5f4cf08 | 1092 | igb_get_phy_info(&adapter->hw); |
9d5c8243 AK |
1093 | } |
1094 | ||
2e5c6922 SH |
1095 | static const struct net_device_ops igb_netdev_ops = { |
1096 | .ndo_open = igb_open, | |
1097 | .ndo_stop = igb_close, | |
00829823 | 1098 | .ndo_start_xmit = igb_xmit_frame_adv, |
2e5c6922 SH |
1099 | .ndo_get_stats = igb_get_stats, |
1100 | .ndo_set_multicast_list = igb_set_multi, | |
1101 | .ndo_set_mac_address = igb_set_mac, | |
1102 | .ndo_change_mtu = igb_change_mtu, | |
1103 | .ndo_do_ioctl = igb_ioctl, | |
1104 | .ndo_tx_timeout = igb_tx_timeout, | |
1105 | .ndo_validate_addr = eth_validate_addr, | |
1106 | .ndo_vlan_rx_register = igb_vlan_rx_register, | |
1107 | .ndo_vlan_rx_add_vid = igb_vlan_rx_add_vid, | |
1108 | .ndo_vlan_rx_kill_vid = igb_vlan_rx_kill_vid, | |
1109 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
1110 | .ndo_poll_controller = igb_netpoll, | |
1111 | #endif | |
1112 | }; | |
1113 | ||
9d5c8243 AK |
1114 | /** |
1115 | * igb_probe - Device Initialization Routine | |
1116 | * @pdev: PCI device information struct | |
1117 | * @ent: entry in igb_pci_tbl | |
1118 | * | |
1119 | * Returns 0 on success, negative on failure | |
1120 | * | |
1121 | * igb_probe initializes an adapter identified by a pci_dev structure. | |
1122 | * The OS initialization, configuring of the adapter private structure, | |
1123 | * and a hardware reset occur. | |
1124 | **/ | |
1125 | static int __devinit igb_probe(struct pci_dev *pdev, | |
1126 | const struct pci_device_id *ent) | |
1127 | { | |
1128 | struct net_device *netdev; | |
1129 | struct igb_adapter *adapter; | |
1130 | struct e1000_hw *hw; | |
1131 | const struct e1000_info *ei = igb_info_tbl[ent->driver_data]; | |
1132 | unsigned long mmio_start, mmio_len; | |
2d6a5e95 | 1133 | int err, pci_using_dac; |
682337fe | 1134 | u16 eeprom_data = 0; |
9d5c8243 AK |
1135 | u16 eeprom_apme_mask = IGB_EEPROM_APME; |
1136 | u32 part_num; | |
1137 | ||
aed5dec3 | 1138 | err = pci_enable_device_mem(pdev); |
9d5c8243 AK |
1139 | if (err) |
1140 | return err; | |
1141 | ||
1142 | pci_using_dac = 0; | |
1143 | err = pci_set_dma_mask(pdev, DMA_64BIT_MASK); | |
1144 | if (!err) { | |
1145 | err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK); | |
1146 | if (!err) | |
1147 | pci_using_dac = 1; | |
1148 | } else { | |
1149 | err = pci_set_dma_mask(pdev, DMA_32BIT_MASK); | |
1150 | if (err) { | |
1151 | err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK); | |
1152 | if (err) { | |
1153 | dev_err(&pdev->dev, "No usable DMA " | |
1154 | "configuration, aborting\n"); | |
1155 | goto err_dma; | |
1156 | } | |
1157 | } | |
1158 | } | |
1159 | ||
aed5dec3 AD |
1160 | err = pci_request_selected_regions(pdev, pci_select_bars(pdev, |
1161 | IORESOURCE_MEM), | |
1162 | igb_driver_name); | |
9d5c8243 AK |
1163 | if (err) |
1164 | goto err_pci_reg; | |
1165 | ||
ea943d41 JK |
1166 | err = pci_enable_pcie_error_reporting(pdev); |
1167 | if (err) { | |
1168 | dev_err(&pdev->dev, "pci_enable_pcie_error_reporting failed " | |
1169 | "0x%x\n", err); | |
1170 | /* non-fatal, continue */ | |
1171 | } | |
40a914fa | 1172 | |
9d5c8243 | 1173 | pci_set_master(pdev); |
c682fc23 | 1174 | pci_save_state(pdev); |
9d5c8243 AK |
1175 | |
1176 | err = -ENOMEM; | |
1bfaf07b AD |
1177 | netdev = alloc_etherdev_mq(sizeof(struct igb_adapter), |
1178 | IGB_ABS_MAX_TX_QUEUES); | |
9d5c8243 AK |
1179 | if (!netdev) |
1180 | goto err_alloc_etherdev; | |
1181 | ||
1182 | SET_NETDEV_DEV(netdev, &pdev->dev); | |
1183 | ||
1184 | pci_set_drvdata(pdev, netdev); | |
1185 | adapter = netdev_priv(netdev); | |
1186 | adapter->netdev = netdev; | |
1187 | adapter->pdev = pdev; | |
1188 | hw = &adapter->hw; | |
1189 | hw->back = adapter; | |
1190 | adapter->msg_enable = NETIF_MSG_DRV | NETIF_MSG_PROBE; | |
1191 | ||
1192 | mmio_start = pci_resource_start(pdev, 0); | |
1193 | mmio_len = pci_resource_len(pdev, 0); | |
1194 | ||
1195 | err = -EIO; | |
28b0759c AD |
1196 | hw->hw_addr = ioremap(mmio_start, mmio_len); |
1197 | if (!hw->hw_addr) | |
9d5c8243 AK |
1198 | goto err_ioremap; |
1199 | ||
2e5c6922 | 1200 | netdev->netdev_ops = &igb_netdev_ops; |
9d5c8243 | 1201 | igb_set_ethtool_ops(netdev); |
9d5c8243 | 1202 | netdev->watchdog_timeo = 5 * HZ; |
9d5c8243 AK |
1203 | |
1204 | strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1); | |
1205 | ||
1206 | netdev->mem_start = mmio_start; | |
1207 | netdev->mem_end = mmio_start + mmio_len; | |
1208 | ||
9d5c8243 AK |
1209 | /* PCI config space info */ |
1210 | hw->vendor_id = pdev->vendor; | |
1211 | hw->device_id = pdev->device; | |
1212 | hw->revision_id = pdev->revision; | |
1213 | hw->subsystem_vendor_id = pdev->subsystem_vendor; | |
1214 | hw->subsystem_device_id = pdev->subsystem_device; | |
1215 | ||
1216 | /* setup the private structure */ | |
1217 | hw->back = adapter; | |
1218 | /* Copy the default MAC, PHY and NVM function pointers */ | |
1219 | memcpy(&hw->mac.ops, ei->mac_ops, sizeof(hw->mac.ops)); | |
1220 | memcpy(&hw->phy.ops, ei->phy_ops, sizeof(hw->phy.ops)); | |
1221 | memcpy(&hw->nvm.ops, ei->nvm_ops, sizeof(hw->nvm.ops)); | |
1222 | /* Initialize skew-specific constants */ | |
1223 | err = ei->get_invariants(hw); | |
1224 | if (err) | |
450c87c8 | 1225 | goto err_sw_init; |
9d5c8243 | 1226 | |
450c87c8 | 1227 | /* setup the private structure */ |
9d5c8243 AK |
1228 | err = igb_sw_init(adapter); |
1229 | if (err) | |
1230 | goto err_sw_init; | |
1231 | ||
1232 | igb_get_bus_info_pcie(hw); | |
1233 | ||
7dfc16fa AD |
1234 | /* set flags */ |
1235 | switch (hw->mac.type) { | |
7dfc16fa | 1236 | case e1000_82575: |
7dfc16fa AD |
1237 | adapter->flags |= IGB_FLAG_NEED_CTX_IDX; |
1238 | break; | |
bbd98fe4 | 1239 | case e1000_82576: |
7dfc16fa AD |
1240 | default: |
1241 | break; | |
1242 | } | |
1243 | ||
9d5c8243 AK |
1244 | hw->phy.autoneg_wait_to_complete = false; |
1245 | hw->mac.adaptive_ifs = true; | |
1246 | ||
1247 | /* Copper options */ | |
1248 | if (hw->phy.media_type == e1000_media_type_copper) { | |
1249 | hw->phy.mdix = AUTO_ALL_MODES; | |
1250 | hw->phy.disable_polarity_correction = false; | |
1251 | hw->phy.ms_type = e1000_ms_hw_default; | |
1252 | } | |
1253 | ||
1254 | if (igb_check_reset_block(hw)) | |
1255 | dev_info(&pdev->dev, | |
1256 | "PHY reset is blocked due to SOL/IDER session.\n"); | |
1257 | ||
1258 | netdev->features = NETIF_F_SG | | |
7d8eb29e | 1259 | NETIF_F_IP_CSUM | |
9d5c8243 AK |
1260 | NETIF_F_HW_VLAN_TX | |
1261 | NETIF_F_HW_VLAN_RX | | |
1262 | NETIF_F_HW_VLAN_FILTER; | |
1263 | ||
7d8eb29e | 1264 | netdev->features |= NETIF_F_IPV6_CSUM; |
9d5c8243 | 1265 | netdev->features |= NETIF_F_TSO; |
9d5c8243 | 1266 | netdev->features |= NETIF_F_TSO6; |
48f29ffc | 1267 | |
5c0999b7 | 1268 | netdev->features |= NETIF_F_GRO; |
d3352520 | 1269 | |
48f29ffc JK |
1270 | netdev->vlan_features |= NETIF_F_TSO; |
1271 | netdev->vlan_features |= NETIF_F_TSO6; | |
7d8eb29e | 1272 | netdev->vlan_features |= NETIF_F_IP_CSUM; |
48f29ffc JK |
1273 | netdev->vlan_features |= NETIF_F_SG; |
1274 | ||
9d5c8243 AK |
1275 | if (pci_using_dac) |
1276 | netdev->features |= NETIF_F_HIGHDMA; | |
1277 | ||
9d5c8243 AK |
1278 | adapter->en_mng_pt = igb_enable_mng_pass_thru(&adapter->hw); |
1279 | ||
1280 | /* before reading the NVM, reset the controller to put the device in a | |
1281 | * known good starting state */ | |
1282 | hw->mac.ops.reset_hw(hw); | |
1283 | ||
1284 | /* make sure the NVM is good */ | |
1285 | if (igb_validate_nvm_checksum(hw) < 0) { | |
1286 | dev_err(&pdev->dev, "The NVM Checksum Is Not Valid\n"); | |
1287 | err = -EIO; | |
1288 | goto err_eeprom; | |
1289 | } | |
1290 | ||
1291 | /* copy the MAC address out of the NVM */ | |
1292 | if (hw->mac.ops.read_mac_addr(hw)) | |
1293 | dev_err(&pdev->dev, "NVM Read Error\n"); | |
1294 | ||
1295 | memcpy(netdev->dev_addr, hw->mac.addr, netdev->addr_len); | |
1296 | memcpy(netdev->perm_addr, hw->mac.addr, netdev->addr_len); | |
1297 | ||
1298 | if (!is_valid_ether_addr(netdev->perm_addr)) { | |
1299 | dev_err(&pdev->dev, "Invalid MAC Address\n"); | |
1300 | err = -EIO; | |
1301 | goto err_eeprom; | |
1302 | } | |
1303 | ||
1304 | init_timer(&adapter->watchdog_timer); | |
1305 | adapter->watchdog_timer.function = &igb_watchdog; | |
1306 | adapter->watchdog_timer.data = (unsigned long) adapter; | |
1307 | ||
1308 | init_timer(&adapter->phy_info_timer); | |
1309 | adapter->phy_info_timer.function = &igb_update_phy_info; | |
1310 | adapter->phy_info_timer.data = (unsigned long) adapter; | |
1311 | ||
1312 | INIT_WORK(&adapter->reset_task, igb_reset_task); | |
1313 | INIT_WORK(&adapter->watchdog_task, igb_watchdog_task); | |
1314 | ||
450c87c8 | 1315 | /* Initialize link properties that are user-changeable */ |
9d5c8243 AK |
1316 | adapter->fc_autoneg = true; |
1317 | hw->mac.autoneg = true; | |
1318 | hw->phy.autoneg_advertised = 0x2f; | |
1319 | ||
1320 | hw->fc.original_type = e1000_fc_default; | |
1321 | hw->fc.type = e1000_fc_default; | |
1322 | ||
cbd347ad | 1323 | adapter->itr_setting = IGB_DEFAULT_ITR; |
9d5c8243 AK |
1324 | adapter->itr = IGB_START_ITR; |
1325 | ||
1326 | igb_validate_mdi_setting(hw); | |
1327 | ||
1328 | adapter->rx_csum = 1; | |
1329 | ||
1330 | /* Initial Wake on LAN setting If APM wake is enabled in the EEPROM, | |
1331 | * enable the ACPI Magic Packet filter | |
1332 | */ | |
1333 | ||
a2cf8b6c | 1334 | if (hw->bus.func == 0) |
312c75ae | 1335 | hw->nvm.ops.read(hw, NVM_INIT_CONTROL3_PORT_A, 1, &eeprom_data); |
a2cf8b6c AD |
1336 | else if (hw->bus.func == 1) |
1337 | hw->nvm.ops.read(hw, NVM_INIT_CONTROL3_PORT_B, 1, &eeprom_data); | |
9d5c8243 AK |
1338 | |
1339 | if (eeprom_data & eeprom_apme_mask) | |
1340 | adapter->eeprom_wol |= E1000_WUFC_MAG; | |
1341 | ||
1342 | /* now that we have the eeprom settings, apply the special cases where | |
1343 | * the eeprom may be wrong or the board simply won't support wake on | |
1344 | * lan on a particular port */ | |
1345 | switch (pdev->device) { | |
1346 | case E1000_DEV_ID_82575GB_QUAD_COPPER: | |
1347 | adapter->eeprom_wol = 0; | |
1348 | break; | |
1349 | case E1000_DEV_ID_82575EB_FIBER_SERDES: | |
2d064c06 AD |
1350 | case E1000_DEV_ID_82576_FIBER: |
1351 | case E1000_DEV_ID_82576_SERDES: | |
9d5c8243 AK |
1352 | /* Wake events only supported on port A for dual fiber |
1353 | * regardless of eeprom setting */ | |
1354 | if (rd32(E1000_STATUS) & E1000_STATUS_FUNC_1) | |
1355 | adapter->eeprom_wol = 0; | |
1356 | break; | |
c8ea5ea9 AD |
1357 | case E1000_DEV_ID_82576_QUAD_COPPER: |
1358 | /* if quad port adapter, disable WoL on all but port A */ | |
1359 | if (global_quad_port_a != 0) | |
1360 | adapter->eeprom_wol = 0; | |
1361 | else | |
1362 | adapter->flags |= IGB_FLAG_QUAD_PORT_A; | |
1363 | /* Reset for multiple quad port adapters */ | |
1364 | if (++global_quad_port_a == 4) | |
1365 | global_quad_port_a = 0; | |
1366 | break; | |
9d5c8243 AK |
1367 | } |
1368 | ||
1369 | /* initialize the wol settings based on the eeprom settings */ | |
1370 | adapter->wol = adapter->eeprom_wol; | |
e1b86d84 | 1371 | device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol); |
9d5c8243 AK |
1372 | |
1373 | /* reset the hardware with the new settings */ | |
1374 | igb_reset(adapter); | |
1375 | ||
1376 | /* let the f/w know that the h/w is now under the control of the | |
1377 | * driver. */ | |
1378 | igb_get_hw_control(adapter); | |
1379 | ||
1380 | /* tell the stack to leave us alone until igb_open() is called */ | |
1381 | netif_carrier_off(netdev); | |
fd2ea0a7 | 1382 | netif_tx_stop_all_queues(netdev); |
9d5c8243 AK |
1383 | |
1384 | strcpy(netdev->name, "eth%d"); | |
1385 | err = register_netdev(netdev); | |
1386 | if (err) | |
1387 | goto err_register; | |
1388 | ||
37680117 AD |
1389 | #ifdef CONFIG_PCI_IOV |
1390 | /* since iov functionality isn't critical to base device function we | |
1391 | * can accept failure. If it fails we don't allow iov to be enabled */ | |
1392 | if (hw->mac.type == e1000_82576) { | |
1393 | err = pci_enable_sriov(pdev, 0); | |
1394 | if (!err) | |
1395 | err = device_create_file(&netdev->dev, | |
1396 | &dev_attr_num_vfs); | |
1397 | if (err) | |
1398 | dev_err(&pdev->dev, "Failed to initialize IOV\n"); | |
1399 | } | |
1400 | ||
1401 | #endif | |
421e02f0 | 1402 | #ifdef CONFIG_IGB_DCA |
bbd98fe4 | 1403 | if (dca_add_requester(&pdev->dev) == 0) { |
7dfc16fa | 1404 | adapter->flags |= IGB_FLAG_DCA_ENABLED; |
fe4506b6 JC |
1405 | dev_info(&pdev->dev, "DCA enabled\n"); |
1406 | /* Always use CB2 mode, difference is masked | |
1407 | * in the CB driver. */ | |
cbd347ad | 1408 | wr32(E1000_DCA_CTRL, E1000_DCA_CTRL_DCA_MODE_CB2); |
fe4506b6 JC |
1409 | igb_setup_dca(adapter); |
1410 | } | |
1411 | #endif | |
1412 | ||
38c845c7 PO |
1413 | /* |
1414 | * Initialize hardware timer: we keep it running just in case | |
1415 | * that some program needs it later on. | |
1416 | */ | |
1417 | memset(&adapter->cycles, 0, sizeof(adapter->cycles)); | |
1418 | adapter->cycles.read = igb_read_clock; | |
1419 | adapter->cycles.mask = CLOCKSOURCE_MASK(64); | |
1420 | adapter->cycles.mult = 1; | |
1421 | adapter->cycles.shift = IGB_TSYNC_SHIFT; | |
1422 | wr32(E1000_TIMINCA, | |
1423 | (1<<24) | | |
1424 | IGB_TSYNC_CYCLE_TIME_IN_NANOSECONDS * IGB_TSYNC_SCALE); | |
1425 | #if 0 | |
1426 | /* | |
1427 | * Avoid rollover while we initialize by resetting the time counter. | |
1428 | */ | |
1429 | wr32(E1000_SYSTIML, 0x00000000); | |
1430 | wr32(E1000_SYSTIMH, 0x00000000); | |
1431 | #else | |
1432 | /* | |
1433 | * Set registers so that rollover occurs soon to test this. | |
1434 | */ | |
1435 | wr32(E1000_SYSTIML, 0x00000000); | |
1436 | wr32(E1000_SYSTIMH, 0xFF800000); | |
1437 | #endif | |
1438 | wrfl(); | |
1439 | timecounter_init(&adapter->clock, | |
1440 | &adapter->cycles, | |
1441 | ktime_to_ns(ktime_get_real())); | |
1442 | ||
33af6bcc PO |
1443 | /* |
1444 | * Synchronize our NIC clock against system wall clock. NIC | |
1445 | * time stamp reading requires ~3us per sample, each sample | |
1446 | * was pretty stable even under load => only require 10 | |
1447 | * samples for each offset comparison. | |
1448 | */ | |
1449 | memset(&adapter->compare, 0, sizeof(adapter->compare)); | |
1450 | adapter->compare.source = &adapter->clock; | |
1451 | adapter->compare.target = ktime_get_real; | |
1452 | adapter->compare.num_samples = 10; | |
1453 | timecompare_update(&adapter->compare, 0); | |
1454 | ||
38c845c7 PO |
1455 | #ifdef DEBUG |
1456 | { | |
1457 | char buffer[160]; | |
1458 | printk(KERN_DEBUG | |
1459 | "igb: %s: hw %p initialized timer\n", | |
1460 | igb_get_time_str(adapter, buffer), | |
1461 | &adapter->hw); | |
1462 | } | |
1463 | #endif | |
1464 | ||
9d5c8243 AK |
1465 | dev_info(&pdev->dev, "Intel(R) Gigabit Ethernet Network Connection\n"); |
1466 | /* print bus type/speed/width info */ | |
7c510e4b | 1467 | dev_info(&pdev->dev, "%s: (PCIe:%s:%s) %pM\n", |
9d5c8243 AK |
1468 | netdev->name, |
1469 | ((hw->bus.speed == e1000_bus_speed_2500) | |
1470 | ? "2.5Gb/s" : "unknown"), | |
1471 | ((hw->bus.width == e1000_bus_width_pcie_x4) | |
1472 | ? "Width x4" : (hw->bus.width == e1000_bus_width_pcie_x1) | |
1473 | ? "Width x1" : "unknown"), | |
7c510e4b | 1474 | netdev->dev_addr); |
9d5c8243 AK |
1475 | |
1476 | igb_read_part_num(hw, &part_num); | |
1477 | dev_info(&pdev->dev, "%s: PBA No: %06x-%03x\n", netdev->name, | |
1478 | (part_num >> 8), (part_num & 0xff)); | |
1479 | ||
1480 | dev_info(&pdev->dev, | |
1481 | "Using %s interrupts. %d rx queue(s), %d tx queue(s)\n", | |
1482 | adapter->msix_entries ? "MSI-X" : | |
7dfc16fa | 1483 | (adapter->flags & IGB_FLAG_HAS_MSI) ? "MSI" : "legacy", |
9d5c8243 AK |
1484 | adapter->num_rx_queues, adapter->num_tx_queues); |
1485 | ||
9d5c8243 AK |
1486 | return 0; |
1487 | ||
1488 | err_register: | |
1489 | igb_release_hw_control(adapter); | |
1490 | err_eeprom: | |
1491 | if (!igb_check_reset_block(hw)) | |
f5f4cf08 | 1492 | igb_reset_phy(hw); |
9d5c8243 AK |
1493 | |
1494 | if (hw->flash_address) | |
1495 | iounmap(hw->flash_address); | |
1496 | ||
a88f10ec | 1497 | igb_free_queues(adapter); |
9d5c8243 | 1498 | err_sw_init: |
9d5c8243 AK |
1499 | iounmap(hw->hw_addr); |
1500 | err_ioremap: | |
1501 | free_netdev(netdev); | |
1502 | err_alloc_etherdev: | |
aed5dec3 AD |
1503 | pci_release_selected_regions(pdev, pci_select_bars(pdev, |
1504 | IORESOURCE_MEM)); | |
9d5c8243 AK |
1505 | err_pci_reg: |
1506 | err_dma: | |
1507 | pci_disable_device(pdev); | |
1508 | return err; | |
1509 | } | |
1510 | ||
1511 | /** | |
1512 | * igb_remove - Device Removal Routine | |
1513 | * @pdev: PCI device information struct | |
1514 | * | |
1515 | * igb_remove is called by the PCI subsystem to alert the driver | |
1516 | * that it should release a PCI device. The could be caused by a | |
1517 | * Hot-Plug event, or because the driver is going to be removed from | |
1518 | * memory. | |
1519 | **/ | |
1520 | static void __devexit igb_remove(struct pci_dev *pdev) | |
1521 | { | |
1522 | struct net_device *netdev = pci_get_drvdata(pdev); | |
1523 | struct igb_adapter *adapter = netdev_priv(netdev); | |
fe4506b6 | 1524 | struct e1000_hw *hw = &adapter->hw; |
ea943d41 | 1525 | int err; |
9d5c8243 AK |
1526 | |
1527 | /* flush_scheduled work may reschedule our watchdog task, so | |
1528 | * explicitly disable watchdog tasks from being rescheduled */ | |
1529 | set_bit(__IGB_DOWN, &adapter->state); | |
1530 | del_timer_sync(&adapter->watchdog_timer); | |
1531 | del_timer_sync(&adapter->phy_info_timer); | |
1532 | ||
1533 | flush_scheduled_work(); | |
1534 | ||
421e02f0 | 1535 | #ifdef CONFIG_IGB_DCA |
7dfc16fa | 1536 | if (adapter->flags & IGB_FLAG_DCA_ENABLED) { |
fe4506b6 JC |
1537 | dev_info(&pdev->dev, "DCA disabled\n"); |
1538 | dca_remove_requester(&pdev->dev); | |
7dfc16fa | 1539 | adapter->flags &= ~IGB_FLAG_DCA_ENABLED; |
cbd347ad | 1540 | wr32(E1000_DCA_CTRL, E1000_DCA_CTRL_DCA_MODE_DISABLE); |
fe4506b6 JC |
1541 | } |
1542 | #endif | |
1543 | ||
9d5c8243 AK |
1544 | /* Release control of h/w to f/w. If f/w is AMT enabled, this |
1545 | * would have already happened in close and is redundant. */ | |
1546 | igb_release_hw_control(adapter); | |
1547 | ||
1548 | unregister_netdev(netdev); | |
1549 | ||
f5f4cf08 AD |
1550 | if (!igb_check_reset_block(&adapter->hw)) |
1551 | igb_reset_phy(&adapter->hw); | |
9d5c8243 | 1552 | |
9d5c8243 AK |
1553 | igb_reset_interrupt_capability(adapter); |
1554 | ||
a88f10ec | 1555 | igb_free_queues(adapter); |
9d5c8243 | 1556 | |
37680117 AD |
1557 | #ifdef CONFIG_PCI_IOV |
1558 | /* reclaim resources allocated to VFs */ | |
1559 | if (adapter->vf_data) { | |
1560 | /* disable iov and allow time for transactions to clear */ | |
1561 | pci_disable_sriov(pdev); | |
1562 | msleep(500); | |
1563 | ||
1564 | kfree(adapter->vf_data); | |
1565 | adapter->vf_data = NULL; | |
1566 | wr32(E1000_IOVCTL, E1000_IOVCTL_REUSE_VFQ); | |
1567 | msleep(100); | |
1568 | dev_info(&pdev->dev, "IOV Disabled\n"); | |
1569 | } | |
1570 | #endif | |
28b0759c AD |
1571 | iounmap(hw->hw_addr); |
1572 | if (hw->flash_address) | |
1573 | iounmap(hw->flash_address); | |
aed5dec3 AD |
1574 | pci_release_selected_regions(pdev, pci_select_bars(pdev, |
1575 | IORESOURCE_MEM)); | |
9d5c8243 AK |
1576 | |
1577 | free_netdev(netdev); | |
1578 | ||
ea943d41 JK |
1579 | err = pci_disable_pcie_error_reporting(pdev); |
1580 | if (err) | |
1581 | dev_err(&pdev->dev, | |
1582 | "pci_disable_pcie_error_reporting failed 0x%x\n", err); | |
40a914fa | 1583 | |
9d5c8243 AK |
1584 | pci_disable_device(pdev); |
1585 | } | |
1586 | ||
1587 | /** | |
1588 | * igb_sw_init - Initialize general software structures (struct igb_adapter) | |
1589 | * @adapter: board private structure to initialize | |
1590 | * | |
1591 | * igb_sw_init initializes the Adapter private data structure. | |
1592 | * Fields are initialized based on PCI device information and | |
1593 | * OS network device settings (MTU size). | |
1594 | **/ | |
1595 | static int __devinit igb_sw_init(struct igb_adapter *adapter) | |
1596 | { | |
1597 | struct e1000_hw *hw = &adapter->hw; | |
1598 | struct net_device *netdev = adapter->netdev; | |
1599 | struct pci_dev *pdev = adapter->pdev; | |
1600 | ||
1601 | pci_read_config_word(pdev, PCI_COMMAND, &hw->bus.pci_cmd_word); | |
1602 | ||
68fd9910 AD |
1603 | adapter->tx_ring_count = IGB_DEFAULT_TXD; |
1604 | adapter->rx_ring_count = IGB_DEFAULT_RXD; | |
9d5c8243 AK |
1605 | adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE; |
1606 | adapter->rx_ps_hdr_size = 0; /* disable packet split */ | |
1607 | adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN; | |
1608 | adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN; | |
1609 | ||
661086df PWJ |
1610 | /* This call may decrease the number of queues depending on |
1611 | * interrupt mode. */ | |
9d5c8243 AK |
1612 | igb_set_interrupt_capability(adapter); |
1613 | ||
1614 | if (igb_alloc_queues(adapter)) { | |
1615 | dev_err(&pdev->dev, "Unable to allocate memory for queues\n"); | |
1616 | return -ENOMEM; | |
1617 | } | |
1618 | ||
1619 | /* Explicitly disable IRQ since the NIC can be in any state. */ | |
1620 | igb_irq_disable(adapter); | |
1621 | ||
1622 | set_bit(__IGB_DOWN, &adapter->state); | |
1623 | return 0; | |
1624 | } | |
1625 | ||
1626 | /** | |
1627 | * igb_open - Called when a network interface is made active | |
1628 | * @netdev: network interface device structure | |
1629 | * | |
1630 | * Returns 0 on success, negative value on failure | |
1631 | * | |
1632 | * The open entry point is called when a network interface is made | |
1633 | * active by the system (IFF_UP). At this point all resources needed | |
1634 | * for transmit and receive operations are allocated, the interrupt | |
1635 | * handler is registered with the OS, the watchdog timer is started, | |
1636 | * and the stack is notified that the interface is ready. | |
1637 | **/ | |
1638 | static int igb_open(struct net_device *netdev) | |
1639 | { | |
1640 | struct igb_adapter *adapter = netdev_priv(netdev); | |
1641 | struct e1000_hw *hw = &adapter->hw; | |
1642 | int err; | |
1643 | int i; | |
1644 | ||
1645 | /* disallow open during test */ | |
1646 | if (test_bit(__IGB_TESTING, &adapter->state)) | |
1647 | return -EBUSY; | |
1648 | ||
1649 | /* allocate transmit descriptors */ | |
1650 | err = igb_setup_all_tx_resources(adapter); | |
1651 | if (err) | |
1652 | goto err_setup_tx; | |
1653 | ||
1654 | /* allocate receive descriptors */ | |
1655 | err = igb_setup_all_rx_resources(adapter); | |
1656 | if (err) | |
1657 | goto err_setup_rx; | |
1658 | ||
1659 | /* e1000_power_up_phy(adapter); */ | |
1660 | ||
1661 | adapter->mng_vlan_id = IGB_MNG_VLAN_NONE; | |
1662 | if ((adapter->hw.mng_cookie.status & | |
1663 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN)) | |
1664 | igb_update_mng_vlan(adapter); | |
1665 | ||
1666 | /* before we allocate an interrupt, we must be ready to handle it. | |
1667 | * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt | |
1668 | * as soon as we call pci_request_irq, so we have to setup our | |
1669 | * clean_rx handler before we do so. */ | |
1670 | igb_configure(adapter); | |
1671 | ||
4ae196df | 1672 | igb_vmm_control(adapter); |
e1739522 AD |
1673 | igb_set_rah_pool(hw, adapter->vfs_allocated_count, 0); |
1674 | igb_set_vmolr(hw, adapter->vfs_allocated_count); | |
1675 | ||
9d5c8243 AK |
1676 | err = igb_request_irq(adapter); |
1677 | if (err) | |
1678 | goto err_req_irq; | |
1679 | ||
1680 | /* From here on the code is the same as igb_up() */ | |
1681 | clear_bit(__IGB_DOWN, &adapter->state); | |
1682 | ||
844290e5 PW |
1683 | for (i = 0; i < adapter->num_rx_queues; i++) |
1684 | napi_enable(&adapter->rx_ring[i].napi); | |
9d5c8243 AK |
1685 | |
1686 | /* Clear any pending interrupts. */ | |
1687 | rd32(E1000_ICR); | |
844290e5 PW |
1688 | |
1689 | igb_irq_enable(adapter); | |
1690 | ||
d55b53ff JK |
1691 | netif_tx_start_all_queues(netdev); |
1692 | ||
9d5c8243 AK |
1693 | /* Fire a link status change interrupt to start the watchdog. */ |
1694 | wr32(E1000_ICS, E1000_ICS_LSC); | |
1695 | ||
1696 | return 0; | |
1697 | ||
1698 | err_req_irq: | |
1699 | igb_release_hw_control(adapter); | |
1700 | /* e1000_power_down_phy(adapter); */ | |
1701 | igb_free_all_rx_resources(adapter); | |
1702 | err_setup_rx: | |
1703 | igb_free_all_tx_resources(adapter); | |
1704 | err_setup_tx: | |
1705 | igb_reset(adapter); | |
1706 | ||
1707 | return err; | |
1708 | } | |
1709 | ||
1710 | /** | |
1711 | * igb_close - Disables a network interface | |
1712 | * @netdev: network interface device structure | |
1713 | * | |
1714 | * Returns 0, this is not allowed to fail | |
1715 | * | |
1716 | * The close entry point is called when an interface is de-activated | |
1717 | * by the OS. The hardware is still under the driver's control, but | |
1718 | * needs to be disabled. A global MAC reset is issued to stop the | |
1719 | * hardware, and all transmit and receive resources are freed. | |
1720 | **/ | |
1721 | static int igb_close(struct net_device *netdev) | |
1722 | { | |
1723 | struct igb_adapter *adapter = netdev_priv(netdev); | |
1724 | ||
1725 | WARN_ON(test_bit(__IGB_RESETTING, &adapter->state)); | |
1726 | igb_down(adapter); | |
1727 | ||
1728 | igb_free_irq(adapter); | |
1729 | ||
1730 | igb_free_all_tx_resources(adapter); | |
1731 | igb_free_all_rx_resources(adapter); | |
1732 | ||
1733 | /* kill manageability vlan ID if supported, but not if a vlan with | |
1734 | * the same ID is registered on the host OS (let 8021q kill it) */ | |
1735 | if ((adapter->hw.mng_cookie.status & | |
1736 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN) && | |
1737 | !(adapter->vlgrp && | |
1738 | vlan_group_get_device(adapter->vlgrp, adapter->mng_vlan_id))) | |
1739 | igb_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); | |
1740 | ||
1741 | return 0; | |
1742 | } | |
1743 | ||
1744 | /** | |
1745 | * igb_setup_tx_resources - allocate Tx resources (Descriptors) | |
1746 | * @adapter: board private structure | |
1747 | * @tx_ring: tx descriptor ring (for a specific queue) to setup | |
1748 | * | |
1749 | * Return 0 on success, negative on failure | |
1750 | **/ | |
9d5c8243 AK |
1751 | int igb_setup_tx_resources(struct igb_adapter *adapter, |
1752 | struct igb_ring *tx_ring) | |
1753 | { | |
1754 | struct pci_dev *pdev = adapter->pdev; | |
1755 | int size; | |
1756 | ||
1757 | size = sizeof(struct igb_buffer) * tx_ring->count; | |
1758 | tx_ring->buffer_info = vmalloc(size); | |
1759 | if (!tx_ring->buffer_info) | |
1760 | goto err; | |
1761 | memset(tx_ring->buffer_info, 0, size); | |
1762 | ||
1763 | /* round up to nearest 4K */ | |
85e8d004 | 1764 | tx_ring->size = tx_ring->count * sizeof(union e1000_adv_tx_desc); |
9d5c8243 AK |
1765 | tx_ring->size = ALIGN(tx_ring->size, 4096); |
1766 | ||
1767 | tx_ring->desc = pci_alloc_consistent(pdev, tx_ring->size, | |
1768 | &tx_ring->dma); | |
1769 | ||
1770 | if (!tx_ring->desc) | |
1771 | goto err; | |
1772 | ||
1773 | tx_ring->adapter = adapter; | |
1774 | tx_ring->next_to_use = 0; | |
1775 | tx_ring->next_to_clean = 0; | |
9d5c8243 AK |
1776 | return 0; |
1777 | ||
1778 | err: | |
1779 | vfree(tx_ring->buffer_info); | |
1780 | dev_err(&adapter->pdev->dev, | |
1781 | "Unable to allocate memory for the transmit descriptor ring\n"); | |
1782 | return -ENOMEM; | |
1783 | } | |
1784 | ||
1785 | /** | |
1786 | * igb_setup_all_tx_resources - wrapper to allocate Tx resources | |
1787 | * (Descriptors) for all queues | |
1788 | * @adapter: board private structure | |
1789 | * | |
1790 | * Return 0 on success, negative on failure | |
1791 | **/ | |
1792 | static int igb_setup_all_tx_resources(struct igb_adapter *adapter) | |
1793 | { | |
1794 | int i, err = 0; | |
661086df | 1795 | int r_idx; |
9d5c8243 AK |
1796 | |
1797 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
1798 | err = igb_setup_tx_resources(adapter, &adapter->tx_ring[i]); | |
1799 | if (err) { | |
1800 | dev_err(&adapter->pdev->dev, | |
1801 | "Allocation for Tx Queue %u failed\n", i); | |
1802 | for (i--; i >= 0; i--) | |
3b644cf6 | 1803 | igb_free_tx_resources(&adapter->tx_ring[i]); |
9d5c8243 AK |
1804 | break; |
1805 | } | |
1806 | } | |
1807 | ||
661086df PWJ |
1808 | for (i = 0; i < IGB_MAX_TX_QUEUES; i++) { |
1809 | r_idx = i % adapter->num_tx_queues; | |
1810 | adapter->multi_tx_table[i] = &adapter->tx_ring[r_idx]; | |
eebbbdba | 1811 | } |
9d5c8243 AK |
1812 | return err; |
1813 | } | |
1814 | ||
1815 | /** | |
1816 | * igb_configure_tx - Configure transmit Unit after Reset | |
1817 | * @adapter: board private structure | |
1818 | * | |
1819 | * Configure the Tx unit of the MAC after a reset. | |
1820 | **/ | |
1821 | static void igb_configure_tx(struct igb_adapter *adapter) | |
1822 | { | |
0e014cb1 | 1823 | u64 tdba; |
9d5c8243 AK |
1824 | struct e1000_hw *hw = &adapter->hw; |
1825 | u32 tctl; | |
1826 | u32 txdctl, txctrl; | |
26bc19ec | 1827 | int i, j; |
9d5c8243 AK |
1828 | |
1829 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
73cd78f1 | 1830 | struct igb_ring *ring = &adapter->tx_ring[i]; |
26bc19ec AD |
1831 | j = ring->reg_idx; |
1832 | wr32(E1000_TDLEN(j), | |
85e8d004 | 1833 | ring->count * sizeof(union e1000_adv_tx_desc)); |
9d5c8243 | 1834 | tdba = ring->dma; |
26bc19ec | 1835 | wr32(E1000_TDBAL(j), |
73cd78f1 | 1836 | tdba & 0x00000000ffffffffULL); |
26bc19ec | 1837 | wr32(E1000_TDBAH(j), tdba >> 32); |
9d5c8243 | 1838 | |
26bc19ec AD |
1839 | ring->head = E1000_TDH(j); |
1840 | ring->tail = E1000_TDT(j); | |
9d5c8243 AK |
1841 | writel(0, hw->hw_addr + ring->tail); |
1842 | writel(0, hw->hw_addr + ring->head); | |
26bc19ec | 1843 | txdctl = rd32(E1000_TXDCTL(j)); |
9d5c8243 | 1844 | txdctl |= E1000_TXDCTL_QUEUE_ENABLE; |
26bc19ec | 1845 | wr32(E1000_TXDCTL(j), txdctl); |
9d5c8243 AK |
1846 | |
1847 | /* Turn off Relaxed Ordering on head write-backs. The | |
1848 | * writebacks MUST be delivered in order or it will | |
1849 | * completely screw up our bookeeping. | |
1850 | */ | |
26bc19ec | 1851 | txctrl = rd32(E1000_DCA_TXCTRL(j)); |
9d5c8243 | 1852 | txctrl &= ~E1000_DCA_TXCTRL_TX_WB_RO_EN; |
26bc19ec | 1853 | wr32(E1000_DCA_TXCTRL(j), txctrl); |
9d5c8243 AK |
1854 | } |
1855 | ||
e1739522 AD |
1856 | /* disable queue 0 to prevent tail bump w/o re-configuration */ |
1857 | if (adapter->vfs_allocated_count) | |
1858 | wr32(E1000_TXDCTL(0), 0); | |
9d5c8243 AK |
1859 | |
1860 | /* Program the Transmit Control Register */ | |
9d5c8243 AK |
1861 | tctl = rd32(E1000_TCTL); |
1862 | tctl &= ~E1000_TCTL_CT; | |
1863 | tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC | | |
1864 | (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT); | |
1865 | ||
1866 | igb_config_collision_dist(hw); | |
1867 | ||
1868 | /* Setup Transmit Descriptor Settings for eop descriptor */ | |
1869 | adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_RS; | |
1870 | ||
1871 | /* Enable transmits */ | |
1872 | tctl |= E1000_TCTL_EN; | |
1873 | ||
1874 | wr32(E1000_TCTL, tctl); | |
1875 | } | |
1876 | ||
1877 | /** | |
1878 | * igb_setup_rx_resources - allocate Rx resources (Descriptors) | |
1879 | * @adapter: board private structure | |
1880 | * @rx_ring: rx descriptor ring (for a specific queue) to setup | |
1881 | * | |
1882 | * Returns 0 on success, negative on failure | |
1883 | **/ | |
9d5c8243 AK |
1884 | int igb_setup_rx_resources(struct igb_adapter *adapter, |
1885 | struct igb_ring *rx_ring) | |
1886 | { | |
1887 | struct pci_dev *pdev = adapter->pdev; | |
1888 | int size, desc_len; | |
1889 | ||
1890 | size = sizeof(struct igb_buffer) * rx_ring->count; | |
1891 | rx_ring->buffer_info = vmalloc(size); | |
1892 | if (!rx_ring->buffer_info) | |
1893 | goto err; | |
1894 | memset(rx_ring->buffer_info, 0, size); | |
1895 | ||
1896 | desc_len = sizeof(union e1000_adv_rx_desc); | |
1897 | ||
1898 | /* Round up to nearest 4K */ | |
1899 | rx_ring->size = rx_ring->count * desc_len; | |
1900 | rx_ring->size = ALIGN(rx_ring->size, 4096); | |
1901 | ||
1902 | rx_ring->desc = pci_alloc_consistent(pdev, rx_ring->size, | |
1903 | &rx_ring->dma); | |
1904 | ||
1905 | if (!rx_ring->desc) | |
1906 | goto err; | |
1907 | ||
1908 | rx_ring->next_to_clean = 0; | |
1909 | rx_ring->next_to_use = 0; | |
9d5c8243 AK |
1910 | |
1911 | rx_ring->adapter = adapter; | |
9d5c8243 AK |
1912 | |
1913 | return 0; | |
1914 | ||
1915 | err: | |
1916 | vfree(rx_ring->buffer_info); | |
1917 | dev_err(&adapter->pdev->dev, "Unable to allocate memory for " | |
1918 | "the receive descriptor ring\n"); | |
1919 | return -ENOMEM; | |
1920 | } | |
1921 | ||
1922 | /** | |
1923 | * igb_setup_all_rx_resources - wrapper to allocate Rx resources | |
1924 | * (Descriptors) for all queues | |
1925 | * @adapter: board private structure | |
1926 | * | |
1927 | * Return 0 on success, negative on failure | |
1928 | **/ | |
1929 | static int igb_setup_all_rx_resources(struct igb_adapter *adapter) | |
1930 | { | |
1931 | int i, err = 0; | |
1932 | ||
1933 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
1934 | err = igb_setup_rx_resources(adapter, &adapter->rx_ring[i]); | |
1935 | if (err) { | |
1936 | dev_err(&adapter->pdev->dev, | |
1937 | "Allocation for Rx Queue %u failed\n", i); | |
1938 | for (i--; i >= 0; i--) | |
3b644cf6 | 1939 | igb_free_rx_resources(&adapter->rx_ring[i]); |
9d5c8243 AK |
1940 | break; |
1941 | } | |
1942 | } | |
1943 | ||
1944 | return err; | |
1945 | } | |
1946 | ||
1947 | /** | |
1948 | * igb_setup_rctl - configure the receive control registers | |
1949 | * @adapter: Board private structure | |
1950 | **/ | |
1951 | static void igb_setup_rctl(struct igb_adapter *adapter) | |
1952 | { | |
1953 | struct e1000_hw *hw = &adapter->hw; | |
1954 | u32 rctl; | |
1955 | u32 srrctl = 0; | |
26bc19ec | 1956 | int i, j; |
9d5c8243 AK |
1957 | |
1958 | rctl = rd32(E1000_RCTL); | |
1959 | ||
1960 | rctl &= ~(3 << E1000_RCTL_MO_SHIFT); | |
69d728ba | 1961 | rctl &= ~(E1000_RCTL_LBM_TCVR | E1000_RCTL_LBM_MAC); |
9d5c8243 | 1962 | |
69d728ba | 1963 | rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | E1000_RCTL_RDMTS_HALF | |
28b0759c | 1964 | (hw->mac.mc_filter_type << E1000_RCTL_MO_SHIFT); |
9d5c8243 | 1965 | |
87cb7e8c AK |
1966 | /* |
1967 | * enable stripping of CRC. It's unlikely this will break BMC | |
1968 | * redirection as it did with e1000. Newer features require | |
1969 | * that the HW strips the CRC. | |
73cd78f1 | 1970 | */ |
87cb7e8c | 1971 | rctl |= E1000_RCTL_SECRC; |
9d5c8243 | 1972 | |
9b07f3d3 | 1973 | /* |
ec54d7d6 | 1974 | * disable store bad packets and clear size bits. |
9b07f3d3 | 1975 | */ |
ec54d7d6 | 1976 | rctl &= ~(E1000_RCTL_SBP | E1000_RCTL_SZ_256); |
9d5c8243 | 1977 | |
ec54d7d6 | 1978 | /* enable LPE when to prevent packets larger than max_frame_size */ |
9b07f3d3 | 1979 | rctl |= E1000_RCTL_LPE; |
b4557be2 AD |
1980 | |
1981 | /* Setup buffer sizes */ | |
1982 | switch (adapter->rx_buffer_len) { | |
1983 | case IGB_RXBUFFER_256: | |
1984 | rctl |= E1000_RCTL_SZ_256; | |
1985 | break; | |
1986 | case IGB_RXBUFFER_512: | |
1987 | rctl |= E1000_RCTL_SZ_512; | |
1988 | break; | |
1989 | default: | |
1990 | srrctl = ALIGN(adapter->rx_buffer_len, 1024) | |
1991 | >> E1000_SRRCTL_BSIZEPKT_SHIFT; | |
1992 | break; | |
9d5c8243 AK |
1993 | } |
1994 | ||
1995 | /* 82575 and greater support packet-split where the protocol | |
1996 | * header is placed in skb->data and the packet data is | |
1997 | * placed in pages hanging off of skb_shinfo(skb)->nr_frags. | |
1998 | * In the case of a non-split, skb->data is linearly filled, | |
1999 | * followed by the page buffers. Therefore, skb->data is | |
2000 | * sized to hold the largest protocol header. | |
2001 | */ | |
2002 | /* allocations using alloc_page take too long for regular MTU | |
2003 | * so only enable packet split for jumbo frames */ | |
ec54d7d6 | 2004 | if (adapter->netdev->mtu > ETH_DATA_LEN) { |
9d5c8243 | 2005 | adapter->rx_ps_hdr_size = IGB_RXBUFFER_128; |
bf36c1a0 | 2006 | srrctl |= adapter->rx_ps_hdr_size << |
9d5c8243 | 2007 | E1000_SRRCTL_BSIZEHDRSIZE_SHIFT; |
9d5c8243 AK |
2008 | srrctl |= E1000_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS; |
2009 | } else { | |
2010 | adapter->rx_ps_hdr_size = 0; | |
2011 | srrctl |= E1000_SRRCTL_DESCTYPE_ADV_ONEBUF; | |
2012 | } | |
2013 | ||
e1739522 AD |
2014 | /* Attention!!! For SR-IOV PF driver operations you must enable |
2015 | * queue drop for all VF and PF queues to prevent head of line blocking | |
2016 | * if an un-trusted VF does not provide descriptors to hardware. | |
2017 | */ | |
2018 | if (adapter->vfs_allocated_count) { | |
2019 | u32 vmolr; | |
2020 | ||
2021 | j = adapter->rx_ring[0].reg_idx; | |
2022 | ||
2023 | /* set all queue drop enable bits */ | |
2024 | wr32(E1000_QDE, ALL_QUEUES); | |
2025 | srrctl |= E1000_SRRCTL_DROP_EN; | |
2026 | ||
2027 | /* disable queue 0 to prevent tail write w/o re-config */ | |
2028 | wr32(E1000_RXDCTL(0), 0); | |
2029 | ||
2030 | vmolr = rd32(E1000_VMOLR(j)); | |
2031 | if (rctl & E1000_RCTL_LPE) | |
2032 | vmolr |= E1000_VMOLR_LPE; | |
2033 | if (adapter->num_rx_queues > 0) | |
2034 | vmolr |= E1000_VMOLR_RSSE; | |
2035 | wr32(E1000_VMOLR(j), vmolr); | |
2036 | } | |
2037 | ||
26bc19ec AD |
2038 | for (i = 0; i < adapter->num_rx_queues; i++) { |
2039 | j = adapter->rx_ring[i].reg_idx; | |
2040 | wr32(E1000_SRRCTL(j), srrctl); | |
2041 | } | |
9d5c8243 AK |
2042 | |
2043 | wr32(E1000_RCTL, rctl); | |
2044 | } | |
2045 | ||
e1739522 AD |
2046 | /** |
2047 | * igb_rlpml_set - set maximum receive packet size | |
2048 | * @adapter: board private structure | |
2049 | * | |
2050 | * Configure maximum receivable packet size. | |
2051 | **/ | |
2052 | static void igb_rlpml_set(struct igb_adapter *adapter) | |
2053 | { | |
2054 | u32 max_frame_size = adapter->max_frame_size; | |
2055 | struct e1000_hw *hw = &adapter->hw; | |
2056 | u16 pf_id = adapter->vfs_allocated_count; | |
2057 | ||
2058 | if (adapter->vlgrp) | |
2059 | max_frame_size += VLAN_TAG_SIZE; | |
2060 | ||
2061 | /* if vfs are enabled we set RLPML to the largest possible request | |
2062 | * size and set the VMOLR RLPML to the size we need */ | |
2063 | if (pf_id) { | |
2064 | igb_set_vf_rlpml(adapter, max_frame_size, pf_id); | |
2065 | max_frame_size = MAX_STD_JUMBO_FRAME_SIZE + VLAN_TAG_SIZE; | |
2066 | } | |
2067 | ||
2068 | wr32(E1000_RLPML, max_frame_size); | |
2069 | } | |
2070 | ||
2071 | /** | |
2072 | * igb_configure_vt_default_pool - Configure VT default pool | |
2073 | * @adapter: board private structure | |
2074 | * | |
2075 | * Configure the default pool | |
2076 | **/ | |
2077 | static void igb_configure_vt_default_pool(struct igb_adapter *adapter) | |
2078 | { | |
2079 | struct e1000_hw *hw = &adapter->hw; | |
2080 | u16 pf_id = adapter->vfs_allocated_count; | |
2081 | u32 vtctl; | |
2082 | ||
2083 | /* not in sr-iov mode - do nothing */ | |
2084 | if (!pf_id) | |
2085 | return; | |
2086 | ||
2087 | vtctl = rd32(E1000_VT_CTL); | |
2088 | vtctl &= ~(E1000_VT_CTL_DEFAULT_POOL_MASK | | |
2089 | E1000_VT_CTL_DISABLE_DEF_POOL); | |
2090 | vtctl |= pf_id << E1000_VT_CTL_DEFAULT_POOL_SHIFT; | |
2091 | wr32(E1000_VT_CTL, vtctl); | |
2092 | } | |
2093 | ||
9d5c8243 AK |
2094 | /** |
2095 | * igb_configure_rx - Configure receive Unit after Reset | |
2096 | * @adapter: board private structure | |
2097 | * | |
2098 | * Configure the Rx unit of the MAC after a reset. | |
2099 | **/ | |
2100 | static void igb_configure_rx(struct igb_adapter *adapter) | |
2101 | { | |
2102 | u64 rdba; | |
2103 | struct e1000_hw *hw = &adapter->hw; | |
2104 | u32 rctl, rxcsum; | |
2105 | u32 rxdctl; | |
9107584e | 2106 | int i; |
9d5c8243 AK |
2107 | |
2108 | /* disable receives while setting up the descriptors */ | |
2109 | rctl = rd32(E1000_RCTL); | |
2110 | wr32(E1000_RCTL, rctl & ~E1000_RCTL_EN); | |
2111 | wrfl(); | |
2112 | mdelay(10); | |
2113 | ||
2114 | if (adapter->itr_setting > 3) | |
6eb5a7f1 | 2115 | wr32(E1000_ITR, adapter->itr); |
9d5c8243 AK |
2116 | |
2117 | /* Setup the HW Rx Head and Tail Descriptor Pointers and | |
2118 | * the Base and Length of the Rx Descriptor Ring */ | |
2119 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
73cd78f1 | 2120 | struct igb_ring *ring = &adapter->rx_ring[i]; |
9107584e | 2121 | int j = ring->reg_idx; |
9d5c8243 | 2122 | rdba = ring->dma; |
26bc19ec | 2123 | wr32(E1000_RDBAL(j), |
73cd78f1 | 2124 | rdba & 0x00000000ffffffffULL); |
26bc19ec AD |
2125 | wr32(E1000_RDBAH(j), rdba >> 32); |
2126 | wr32(E1000_RDLEN(j), | |
73cd78f1 | 2127 | ring->count * sizeof(union e1000_adv_rx_desc)); |
9d5c8243 | 2128 | |
26bc19ec AD |
2129 | ring->head = E1000_RDH(j); |
2130 | ring->tail = E1000_RDT(j); | |
9d5c8243 AK |
2131 | writel(0, hw->hw_addr + ring->tail); |
2132 | writel(0, hw->hw_addr + ring->head); | |
2133 | ||
26bc19ec | 2134 | rxdctl = rd32(E1000_RXDCTL(j)); |
9d5c8243 AK |
2135 | rxdctl |= E1000_RXDCTL_QUEUE_ENABLE; |
2136 | rxdctl &= 0xFFF00000; | |
2137 | rxdctl |= IGB_RX_PTHRESH; | |
2138 | rxdctl |= IGB_RX_HTHRESH << 8; | |
2139 | rxdctl |= IGB_RX_WTHRESH << 16; | |
26bc19ec | 2140 | wr32(E1000_RXDCTL(j), rxdctl); |
9d5c8243 AK |
2141 | } |
2142 | ||
2143 | if (adapter->num_rx_queues > 1) { | |
2144 | u32 random[10]; | |
2145 | u32 mrqc; | |
2146 | u32 j, shift; | |
2147 | union e1000_reta { | |
2148 | u32 dword; | |
2149 | u8 bytes[4]; | |
2150 | } reta; | |
2151 | ||
2152 | get_random_bytes(&random[0], 40); | |
2153 | ||
2d064c06 AD |
2154 | if (hw->mac.type >= e1000_82576) |
2155 | shift = 0; | |
2156 | else | |
2157 | shift = 6; | |
9d5c8243 AK |
2158 | for (j = 0; j < (32 * 4); j++) { |
2159 | reta.bytes[j & 3] = | |
26bc19ec | 2160 | adapter->rx_ring[(j % adapter->num_rx_queues)].reg_idx << shift; |
9d5c8243 AK |
2161 | if ((j & 3) == 3) |
2162 | writel(reta.dword, | |
2163 | hw->hw_addr + E1000_RETA(0) + (j & ~3)); | |
2164 | } | |
e1739522 AD |
2165 | if (adapter->vfs_allocated_count) |
2166 | mrqc = E1000_MRQC_ENABLE_VMDQ_RSS_2Q; | |
2167 | else | |
2168 | mrqc = E1000_MRQC_ENABLE_RSS_4Q; | |
9d5c8243 AK |
2169 | |
2170 | /* Fill out hash function seeds */ | |
2171 | for (j = 0; j < 10; j++) | |
2172 | array_wr32(E1000_RSSRK(0), j, random[j]); | |
2173 | ||
2174 | mrqc |= (E1000_MRQC_RSS_FIELD_IPV4 | | |
2175 | E1000_MRQC_RSS_FIELD_IPV4_TCP); | |
2176 | mrqc |= (E1000_MRQC_RSS_FIELD_IPV6 | | |
2177 | E1000_MRQC_RSS_FIELD_IPV6_TCP); | |
2178 | mrqc |= (E1000_MRQC_RSS_FIELD_IPV4_UDP | | |
2179 | E1000_MRQC_RSS_FIELD_IPV6_UDP); | |
2180 | mrqc |= (E1000_MRQC_RSS_FIELD_IPV6_UDP_EX | | |
2181 | E1000_MRQC_RSS_FIELD_IPV6_TCP_EX); | |
2182 | ||
2183 | ||
2184 | wr32(E1000_MRQC, mrqc); | |
2185 | ||
2186 | /* Multiqueue and raw packet checksumming are mutually | |
2187 | * exclusive. Note that this not the same as TCP/IP | |
2188 | * checksumming, which works fine. */ | |
2189 | rxcsum = rd32(E1000_RXCSUM); | |
2190 | rxcsum |= E1000_RXCSUM_PCSD; | |
2191 | wr32(E1000_RXCSUM, rxcsum); | |
2192 | } else { | |
e1739522 AD |
2193 | /* Enable multi-queue for sr-iov */ |
2194 | if (adapter->vfs_allocated_count) | |
2195 | wr32(E1000_MRQC, E1000_MRQC_ENABLE_VMDQ); | |
9d5c8243 AK |
2196 | /* Enable Receive Checksum Offload for TCP and UDP */ |
2197 | rxcsum = rd32(E1000_RXCSUM); | |
56fbbb4e AD |
2198 | if (adapter->rx_csum) |
2199 | rxcsum |= E1000_RXCSUM_TUOFL | E1000_RXCSUM_IPPCSE; | |
2200 | else | |
2201 | rxcsum &= ~(E1000_RXCSUM_TUOFL | E1000_RXCSUM_IPPCSE); | |
2202 | ||
9d5c8243 AK |
2203 | wr32(E1000_RXCSUM, rxcsum); |
2204 | } | |
2205 | ||
e1739522 AD |
2206 | /* Set the default pool for the PF's first queue */ |
2207 | igb_configure_vt_default_pool(adapter); | |
2208 | ||
2209 | igb_rlpml_set(adapter); | |
9d5c8243 AK |
2210 | |
2211 | /* Enable Receives */ | |
2212 | wr32(E1000_RCTL, rctl); | |
2213 | } | |
2214 | ||
2215 | /** | |
2216 | * igb_free_tx_resources - Free Tx Resources per Queue | |
9d5c8243 AK |
2217 | * @tx_ring: Tx descriptor ring for a specific queue |
2218 | * | |
2219 | * Free all transmit software resources | |
2220 | **/ | |
68fd9910 | 2221 | void igb_free_tx_resources(struct igb_ring *tx_ring) |
9d5c8243 | 2222 | { |
3b644cf6 | 2223 | struct pci_dev *pdev = tx_ring->adapter->pdev; |
9d5c8243 | 2224 | |
3b644cf6 | 2225 | igb_clean_tx_ring(tx_ring); |
9d5c8243 AK |
2226 | |
2227 | vfree(tx_ring->buffer_info); | |
2228 | tx_ring->buffer_info = NULL; | |
2229 | ||
2230 | pci_free_consistent(pdev, tx_ring->size, tx_ring->desc, tx_ring->dma); | |
2231 | ||
2232 | tx_ring->desc = NULL; | |
2233 | } | |
2234 | ||
2235 | /** | |
2236 | * igb_free_all_tx_resources - Free Tx Resources for All Queues | |
2237 | * @adapter: board private structure | |
2238 | * | |
2239 | * Free all transmit software resources | |
2240 | **/ | |
2241 | static void igb_free_all_tx_resources(struct igb_adapter *adapter) | |
2242 | { | |
2243 | int i; | |
2244 | ||
2245 | for (i = 0; i < adapter->num_tx_queues; i++) | |
3b644cf6 | 2246 | igb_free_tx_resources(&adapter->tx_ring[i]); |
9d5c8243 AK |
2247 | } |
2248 | ||
2249 | static void igb_unmap_and_free_tx_resource(struct igb_adapter *adapter, | |
2250 | struct igb_buffer *buffer_info) | |
2251 | { | |
2252 | if (buffer_info->dma) { | |
2253 | pci_unmap_page(adapter->pdev, | |
2254 | buffer_info->dma, | |
2255 | buffer_info->length, | |
2256 | PCI_DMA_TODEVICE); | |
2257 | buffer_info->dma = 0; | |
2258 | } | |
2259 | if (buffer_info->skb) { | |
2260 | dev_kfree_skb_any(buffer_info->skb); | |
2261 | buffer_info->skb = NULL; | |
2262 | } | |
2263 | buffer_info->time_stamp = 0; | |
73cd78f1 | 2264 | buffer_info->next_to_watch = 0; |
9d5c8243 AK |
2265 | /* buffer_info must be completely set up in the transmit path */ |
2266 | } | |
2267 | ||
2268 | /** | |
2269 | * igb_clean_tx_ring - Free Tx Buffers | |
9d5c8243 AK |
2270 | * @tx_ring: ring to be cleaned |
2271 | **/ | |
3b644cf6 | 2272 | static void igb_clean_tx_ring(struct igb_ring *tx_ring) |
9d5c8243 | 2273 | { |
3b644cf6 | 2274 | struct igb_adapter *adapter = tx_ring->adapter; |
9d5c8243 AK |
2275 | struct igb_buffer *buffer_info; |
2276 | unsigned long size; | |
2277 | unsigned int i; | |
2278 | ||
2279 | if (!tx_ring->buffer_info) | |
2280 | return; | |
2281 | /* Free all the Tx ring sk_buffs */ | |
2282 | ||
2283 | for (i = 0; i < tx_ring->count; i++) { | |
2284 | buffer_info = &tx_ring->buffer_info[i]; | |
2285 | igb_unmap_and_free_tx_resource(adapter, buffer_info); | |
2286 | } | |
2287 | ||
2288 | size = sizeof(struct igb_buffer) * tx_ring->count; | |
2289 | memset(tx_ring->buffer_info, 0, size); | |
2290 | ||
2291 | /* Zero out the descriptor ring */ | |
2292 | ||
2293 | memset(tx_ring->desc, 0, tx_ring->size); | |
2294 | ||
2295 | tx_ring->next_to_use = 0; | |
2296 | tx_ring->next_to_clean = 0; | |
2297 | ||
2298 | writel(0, adapter->hw.hw_addr + tx_ring->head); | |
2299 | writel(0, adapter->hw.hw_addr + tx_ring->tail); | |
2300 | } | |
2301 | ||
2302 | /** | |
2303 | * igb_clean_all_tx_rings - Free Tx Buffers for all queues | |
2304 | * @adapter: board private structure | |
2305 | **/ | |
2306 | static void igb_clean_all_tx_rings(struct igb_adapter *adapter) | |
2307 | { | |
2308 | int i; | |
2309 | ||
2310 | for (i = 0; i < adapter->num_tx_queues; i++) | |
3b644cf6 | 2311 | igb_clean_tx_ring(&adapter->tx_ring[i]); |
9d5c8243 AK |
2312 | } |
2313 | ||
2314 | /** | |
2315 | * igb_free_rx_resources - Free Rx Resources | |
9d5c8243 AK |
2316 | * @rx_ring: ring to clean the resources from |
2317 | * | |
2318 | * Free all receive software resources | |
2319 | **/ | |
68fd9910 | 2320 | void igb_free_rx_resources(struct igb_ring *rx_ring) |
9d5c8243 | 2321 | { |
3b644cf6 | 2322 | struct pci_dev *pdev = rx_ring->adapter->pdev; |
9d5c8243 | 2323 | |
3b644cf6 | 2324 | igb_clean_rx_ring(rx_ring); |
9d5c8243 AK |
2325 | |
2326 | vfree(rx_ring->buffer_info); | |
2327 | rx_ring->buffer_info = NULL; | |
2328 | ||
2329 | pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma); | |
2330 | ||
2331 | rx_ring->desc = NULL; | |
2332 | } | |
2333 | ||
2334 | /** | |
2335 | * igb_free_all_rx_resources - Free Rx Resources for All Queues | |
2336 | * @adapter: board private structure | |
2337 | * | |
2338 | * Free all receive software resources | |
2339 | **/ | |
2340 | static void igb_free_all_rx_resources(struct igb_adapter *adapter) | |
2341 | { | |
2342 | int i; | |
2343 | ||
2344 | for (i = 0; i < adapter->num_rx_queues; i++) | |
3b644cf6 | 2345 | igb_free_rx_resources(&adapter->rx_ring[i]); |
9d5c8243 AK |
2346 | } |
2347 | ||
2348 | /** | |
2349 | * igb_clean_rx_ring - Free Rx Buffers per Queue | |
9d5c8243 AK |
2350 | * @rx_ring: ring to free buffers from |
2351 | **/ | |
3b644cf6 | 2352 | static void igb_clean_rx_ring(struct igb_ring *rx_ring) |
9d5c8243 | 2353 | { |
3b644cf6 | 2354 | struct igb_adapter *adapter = rx_ring->adapter; |
9d5c8243 AK |
2355 | struct igb_buffer *buffer_info; |
2356 | struct pci_dev *pdev = adapter->pdev; | |
2357 | unsigned long size; | |
2358 | unsigned int i; | |
2359 | ||
2360 | if (!rx_ring->buffer_info) | |
2361 | return; | |
2362 | /* Free all the Rx ring sk_buffs */ | |
2363 | for (i = 0; i < rx_ring->count; i++) { | |
2364 | buffer_info = &rx_ring->buffer_info[i]; | |
2365 | if (buffer_info->dma) { | |
2366 | if (adapter->rx_ps_hdr_size) | |
2367 | pci_unmap_single(pdev, buffer_info->dma, | |
2368 | adapter->rx_ps_hdr_size, | |
2369 | PCI_DMA_FROMDEVICE); | |
2370 | else | |
2371 | pci_unmap_single(pdev, buffer_info->dma, | |
2372 | adapter->rx_buffer_len, | |
2373 | PCI_DMA_FROMDEVICE); | |
2374 | buffer_info->dma = 0; | |
2375 | } | |
2376 | ||
2377 | if (buffer_info->skb) { | |
2378 | dev_kfree_skb(buffer_info->skb); | |
2379 | buffer_info->skb = NULL; | |
2380 | } | |
2381 | if (buffer_info->page) { | |
bf36c1a0 AD |
2382 | if (buffer_info->page_dma) |
2383 | pci_unmap_page(pdev, buffer_info->page_dma, | |
2384 | PAGE_SIZE / 2, | |
2385 | PCI_DMA_FROMDEVICE); | |
9d5c8243 AK |
2386 | put_page(buffer_info->page); |
2387 | buffer_info->page = NULL; | |
2388 | buffer_info->page_dma = 0; | |
bf36c1a0 | 2389 | buffer_info->page_offset = 0; |
9d5c8243 AK |
2390 | } |
2391 | } | |
2392 | ||
9d5c8243 AK |
2393 | size = sizeof(struct igb_buffer) * rx_ring->count; |
2394 | memset(rx_ring->buffer_info, 0, size); | |
2395 | ||
2396 | /* Zero out the descriptor ring */ | |
2397 | memset(rx_ring->desc, 0, rx_ring->size); | |
2398 | ||
2399 | rx_ring->next_to_clean = 0; | |
2400 | rx_ring->next_to_use = 0; | |
2401 | ||
2402 | writel(0, adapter->hw.hw_addr + rx_ring->head); | |
2403 | writel(0, adapter->hw.hw_addr + rx_ring->tail); | |
2404 | } | |
2405 | ||
2406 | /** | |
2407 | * igb_clean_all_rx_rings - Free Rx Buffers for all queues | |
2408 | * @adapter: board private structure | |
2409 | **/ | |
2410 | static void igb_clean_all_rx_rings(struct igb_adapter *adapter) | |
2411 | { | |
2412 | int i; | |
2413 | ||
2414 | for (i = 0; i < adapter->num_rx_queues; i++) | |
3b644cf6 | 2415 | igb_clean_rx_ring(&adapter->rx_ring[i]); |
9d5c8243 AK |
2416 | } |
2417 | ||
2418 | /** | |
2419 | * igb_set_mac - Change the Ethernet Address of the NIC | |
2420 | * @netdev: network interface device structure | |
2421 | * @p: pointer to an address structure | |
2422 | * | |
2423 | * Returns 0 on success, negative on failure | |
2424 | **/ | |
2425 | static int igb_set_mac(struct net_device *netdev, void *p) | |
2426 | { | |
2427 | struct igb_adapter *adapter = netdev_priv(netdev); | |
28b0759c | 2428 | struct e1000_hw *hw = &adapter->hw; |
9d5c8243 AK |
2429 | struct sockaddr *addr = p; |
2430 | ||
2431 | if (!is_valid_ether_addr(addr->sa_data)) | |
2432 | return -EADDRNOTAVAIL; | |
2433 | ||
2434 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
28b0759c | 2435 | memcpy(hw->mac.addr, addr->sa_data, netdev->addr_len); |
9d5c8243 | 2436 | |
28b0759c | 2437 | hw->mac.ops.rar_set(hw, hw->mac.addr, 0); |
9d5c8243 | 2438 | |
e1739522 AD |
2439 | igb_set_rah_pool(hw, adapter->vfs_allocated_count, 0); |
2440 | ||
9d5c8243 AK |
2441 | return 0; |
2442 | } | |
2443 | ||
2444 | /** | |
2445 | * igb_set_multi - Multicast and Promiscuous mode set | |
2446 | * @netdev: network interface device structure | |
2447 | * | |
2448 | * The set_multi entry point is called whenever the multicast address | |
2449 | * list or the network interface flags are updated. This routine is | |
2450 | * responsible for configuring the hardware for proper multicast, | |
2451 | * promiscuous mode, and all-multi behavior. | |
2452 | **/ | |
2453 | static void igb_set_multi(struct net_device *netdev) | |
2454 | { | |
2455 | struct igb_adapter *adapter = netdev_priv(netdev); | |
2456 | struct e1000_hw *hw = &adapter->hw; | |
2457 | struct e1000_mac_info *mac = &hw->mac; | |
2458 | struct dev_mc_list *mc_ptr; | |
2459 | u8 *mta_list; | |
2460 | u32 rctl; | |
2461 | int i; | |
2462 | ||
2463 | /* Check for Promiscuous and All Multicast modes */ | |
2464 | ||
2465 | rctl = rd32(E1000_RCTL); | |
2466 | ||
746b9f02 | 2467 | if (netdev->flags & IFF_PROMISC) { |
9d5c8243 | 2468 | rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE); |
746b9f02 PM |
2469 | rctl &= ~E1000_RCTL_VFE; |
2470 | } else { | |
2471 | if (netdev->flags & IFF_ALLMULTI) { | |
2472 | rctl |= E1000_RCTL_MPE; | |
2473 | rctl &= ~E1000_RCTL_UPE; | |
2474 | } else | |
2475 | rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE); | |
78ed11a5 | 2476 | rctl |= E1000_RCTL_VFE; |
746b9f02 | 2477 | } |
9d5c8243 AK |
2478 | wr32(E1000_RCTL, rctl); |
2479 | ||
2480 | if (!netdev->mc_count) { | |
2481 | /* nothing to program, so clear mc list */ | |
8a900862 AD |
2482 | igb_update_mc_addr_list(hw, NULL, 0, 1, |
2483 | mac->rar_entry_count); | |
9d5c8243 AK |
2484 | return; |
2485 | } | |
2486 | ||
2487 | mta_list = kzalloc(netdev->mc_count * 6, GFP_ATOMIC); | |
2488 | if (!mta_list) | |
2489 | return; | |
2490 | ||
2491 | /* The shared function expects a packed array of only addresses. */ | |
2492 | mc_ptr = netdev->mc_list; | |
2493 | ||
2494 | for (i = 0; i < netdev->mc_count; i++) { | |
2495 | if (!mc_ptr) | |
2496 | break; | |
2497 | memcpy(mta_list + (i*ETH_ALEN), mc_ptr->dmi_addr, ETH_ALEN); | |
2498 | mc_ptr = mc_ptr->next; | |
2499 | } | |
e1739522 AD |
2500 | igb_update_mc_addr_list(hw, mta_list, i, |
2501 | adapter->vfs_allocated_count + 1, | |
2502 | mac->rar_entry_count); | |
2503 | ||
2504 | igb_set_mc_list_pools(adapter, i, mac->rar_entry_count); | |
4ae196df AD |
2505 | igb_restore_vf_multicasts(adapter); |
2506 | ||
9d5c8243 AK |
2507 | kfree(mta_list); |
2508 | } | |
2509 | ||
2510 | /* Need to wait a few seconds after link up to get diagnostic information from | |
2511 | * the phy */ | |
2512 | static void igb_update_phy_info(unsigned long data) | |
2513 | { | |
2514 | struct igb_adapter *adapter = (struct igb_adapter *) data; | |
f5f4cf08 | 2515 | igb_get_phy_info(&adapter->hw); |
9d5c8243 AK |
2516 | } |
2517 | ||
4d6b725e AD |
2518 | /** |
2519 | * igb_has_link - check shared code for link and determine up/down | |
2520 | * @adapter: pointer to driver private info | |
2521 | **/ | |
2522 | static bool igb_has_link(struct igb_adapter *adapter) | |
2523 | { | |
2524 | struct e1000_hw *hw = &adapter->hw; | |
2525 | bool link_active = false; | |
2526 | s32 ret_val = 0; | |
2527 | ||
2528 | /* get_link_status is set on LSC (link status) interrupt or | |
2529 | * rx sequence error interrupt. get_link_status will stay | |
2530 | * false until the e1000_check_for_link establishes link | |
2531 | * for copper adapters ONLY | |
2532 | */ | |
2533 | switch (hw->phy.media_type) { | |
2534 | case e1000_media_type_copper: | |
2535 | if (hw->mac.get_link_status) { | |
2536 | ret_val = hw->mac.ops.check_for_link(hw); | |
2537 | link_active = !hw->mac.get_link_status; | |
2538 | } else { | |
2539 | link_active = true; | |
2540 | } | |
2541 | break; | |
2542 | case e1000_media_type_fiber: | |
2543 | ret_val = hw->mac.ops.check_for_link(hw); | |
2544 | link_active = !!(rd32(E1000_STATUS) & E1000_STATUS_LU); | |
2545 | break; | |
2546 | case e1000_media_type_internal_serdes: | |
2547 | ret_val = hw->mac.ops.check_for_link(hw); | |
2548 | link_active = hw->mac.serdes_has_link; | |
2549 | break; | |
2550 | default: | |
2551 | case e1000_media_type_unknown: | |
2552 | break; | |
2553 | } | |
2554 | ||
2555 | return link_active; | |
2556 | } | |
2557 | ||
9d5c8243 AK |
2558 | /** |
2559 | * igb_watchdog - Timer Call-back | |
2560 | * @data: pointer to adapter cast into an unsigned long | |
2561 | **/ | |
2562 | static void igb_watchdog(unsigned long data) | |
2563 | { | |
2564 | struct igb_adapter *adapter = (struct igb_adapter *)data; | |
2565 | /* Do the rest outside of interrupt context */ | |
2566 | schedule_work(&adapter->watchdog_task); | |
2567 | } | |
2568 | ||
2569 | static void igb_watchdog_task(struct work_struct *work) | |
2570 | { | |
2571 | struct igb_adapter *adapter = container_of(work, | |
2572 | struct igb_adapter, watchdog_task); | |
2573 | struct e1000_hw *hw = &adapter->hw; | |
9d5c8243 AK |
2574 | struct net_device *netdev = adapter->netdev; |
2575 | struct igb_ring *tx_ring = adapter->tx_ring; | |
9d5c8243 | 2576 | u32 link; |
7a6ea550 | 2577 | u32 eics = 0; |
7a6ea550 | 2578 | int i; |
9d5c8243 | 2579 | |
4d6b725e AD |
2580 | link = igb_has_link(adapter); |
2581 | if ((netif_carrier_ok(netdev)) && link) | |
9d5c8243 AK |
2582 | goto link_up; |
2583 | ||
9d5c8243 AK |
2584 | if (link) { |
2585 | if (!netif_carrier_ok(netdev)) { | |
2586 | u32 ctrl; | |
2587 | hw->mac.ops.get_speed_and_duplex(&adapter->hw, | |
2588 | &adapter->link_speed, | |
2589 | &adapter->link_duplex); | |
2590 | ||
2591 | ctrl = rd32(E1000_CTRL); | |
527d47c1 AD |
2592 | /* Links status message must follow this format */ |
2593 | printk(KERN_INFO "igb: %s NIC Link is Up %d Mbps %s, " | |
9d5c8243 | 2594 | "Flow Control: %s\n", |
527d47c1 | 2595 | netdev->name, |
9d5c8243 AK |
2596 | adapter->link_speed, |
2597 | adapter->link_duplex == FULL_DUPLEX ? | |
2598 | "Full Duplex" : "Half Duplex", | |
2599 | ((ctrl & E1000_CTRL_TFCE) && (ctrl & | |
2600 | E1000_CTRL_RFCE)) ? "RX/TX" : ((ctrl & | |
2601 | E1000_CTRL_RFCE) ? "RX" : ((ctrl & | |
2602 | E1000_CTRL_TFCE) ? "TX" : "None"))); | |
2603 | ||
2604 | /* tweak tx_queue_len according to speed/duplex and | |
2605 | * adjust the timeout factor */ | |
2606 | netdev->tx_queue_len = adapter->tx_queue_len; | |
2607 | adapter->tx_timeout_factor = 1; | |
2608 | switch (adapter->link_speed) { | |
2609 | case SPEED_10: | |
2610 | netdev->tx_queue_len = 10; | |
2611 | adapter->tx_timeout_factor = 14; | |
2612 | break; | |
2613 | case SPEED_100: | |
2614 | netdev->tx_queue_len = 100; | |
2615 | /* maybe add some timeout factor ? */ | |
2616 | break; | |
2617 | } | |
2618 | ||
2619 | netif_carrier_on(netdev); | |
fd2ea0a7 | 2620 | netif_tx_wake_all_queues(netdev); |
9d5c8243 | 2621 | |
4ae196df AD |
2622 | igb_ping_all_vfs(adapter); |
2623 | ||
4b1a9877 | 2624 | /* link state has changed, schedule phy info update */ |
9d5c8243 AK |
2625 | if (!test_bit(__IGB_DOWN, &adapter->state)) |
2626 | mod_timer(&adapter->phy_info_timer, | |
2627 | round_jiffies(jiffies + 2 * HZ)); | |
2628 | } | |
2629 | } else { | |
2630 | if (netif_carrier_ok(netdev)) { | |
2631 | adapter->link_speed = 0; | |
2632 | adapter->link_duplex = 0; | |
527d47c1 AD |
2633 | /* Links status message must follow this format */ |
2634 | printk(KERN_INFO "igb: %s NIC Link is Down\n", | |
2635 | netdev->name); | |
9d5c8243 | 2636 | netif_carrier_off(netdev); |
fd2ea0a7 | 2637 | netif_tx_stop_all_queues(netdev); |
4b1a9877 | 2638 | |
4ae196df AD |
2639 | igb_ping_all_vfs(adapter); |
2640 | ||
4b1a9877 | 2641 | /* link state has changed, schedule phy info update */ |
9d5c8243 AK |
2642 | if (!test_bit(__IGB_DOWN, &adapter->state)) |
2643 | mod_timer(&adapter->phy_info_timer, | |
2644 | round_jiffies(jiffies + 2 * HZ)); | |
2645 | } | |
2646 | } | |
2647 | ||
2648 | link_up: | |
2649 | igb_update_stats(adapter); | |
2650 | ||
4b1a9877 | 2651 | hw->mac.tx_packet_delta = adapter->stats.tpt - adapter->tpt_old; |
9d5c8243 | 2652 | adapter->tpt_old = adapter->stats.tpt; |
4b1a9877 | 2653 | hw->mac.collision_delta = adapter->stats.colc - adapter->colc_old; |
9d5c8243 AK |
2654 | adapter->colc_old = adapter->stats.colc; |
2655 | ||
2656 | adapter->gorc = adapter->stats.gorc - adapter->gorc_old; | |
2657 | adapter->gorc_old = adapter->stats.gorc; | |
2658 | adapter->gotc = adapter->stats.gotc - adapter->gotc_old; | |
2659 | adapter->gotc_old = adapter->stats.gotc; | |
2660 | ||
2661 | igb_update_adaptive(&adapter->hw); | |
2662 | ||
2663 | if (!netif_carrier_ok(netdev)) { | |
2664 | if (IGB_DESC_UNUSED(tx_ring) + 1 < tx_ring->count) { | |
2665 | /* We've lost link, so the controller stops DMA, | |
2666 | * but we've got queued Tx work that's never going | |
2667 | * to get done, so reset controller to flush Tx. | |
2668 | * (Do the reset outside of interrupt context). */ | |
2669 | adapter->tx_timeout_count++; | |
2670 | schedule_work(&adapter->reset_task); | |
2671 | } | |
2672 | } | |
2673 | ||
2674 | /* Cause software interrupt to ensure rx ring is cleaned */ | |
7a6ea550 AD |
2675 | if (adapter->msix_entries) { |
2676 | for (i = 0; i < adapter->num_rx_queues; i++) | |
2677 | eics |= adapter->rx_ring[i].eims_value; | |
2678 | wr32(E1000_EICS, eics); | |
2679 | } else { | |
2680 | wr32(E1000_ICS, E1000_ICS_RXDMT0); | |
2681 | } | |
9d5c8243 AK |
2682 | |
2683 | /* Force detection of hung controller every watchdog period */ | |
2684 | tx_ring->detect_tx_hung = true; | |
2685 | ||
2686 | /* Reset the timer */ | |
2687 | if (!test_bit(__IGB_DOWN, &adapter->state)) | |
2688 | mod_timer(&adapter->watchdog_timer, | |
2689 | round_jiffies(jiffies + 2 * HZ)); | |
2690 | } | |
2691 | ||
2692 | enum latency_range { | |
2693 | lowest_latency = 0, | |
2694 | low_latency = 1, | |
2695 | bulk_latency = 2, | |
2696 | latency_invalid = 255 | |
2697 | }; | |
2698 | ||
2699 | ||
6eb5a7f1 AD |
2700 | /** |
2701 | * igb_update_ring_itr - update the dynamic ITR value based on packet size | |
2702 | * | |
2703 | * Stores a new ITR value based on strictly on packet size. This | |
2704 | * algorithm is less sophisticated than that used in igb_update_itr, | |
2705 | * due to the difficulty of synchronizing statistics across multiple | |
2706 | * receive rings. The divisors and thresholds used by this fuction | |
2707 | * were determined based on theoretical maximum wire speed and testing | |
2708 | * data, in order to minimize response time while increasing bulk | |
2709 | * throughput. | |
2710 | * This functionality is controlled by the InterruptThrottleRate module | |
2711 | * parameter (see igb_param.c) | |
2712 | * NOTE: This function is called only when operating in a multiqueue | |
2713 | * receive environment. | |
2714 | * @rx_ring: pointer to ring | |
2715 | **/ | |
2716 | static void igb_update_ring_itr(struct igb_ring *rx_ring) | |
9d5c8243 | 2717 | { |
6eb5a7f1 AD |
2718 | int new_val = rx_ring->itr_val; |
2719 | int avg_wire_size = 0; | |
2720 | struct igb_adapter *adapter = rx_ring->adapter; | |
9d5c8243 | 2721 | |
6eb5a7f1 AD |
2722 | if (!rx_ring->total_packets) |
2723 | goto clear_counts; /* no packets, so don't do anything */ | |
9d5c8243 | 2724 | |
6eb5a7f1 AD |
2725 | /* For non-gigabit speeds, just fix the interrupt rate at 4000 |
2726 | * ints/sec - ITR timer value of 120 ticks. | |
2727 | */ | |
2728 | if (adapter->link_speed != SPEED_1000) { | |
2729 | new_val = 120; | |
2730 | goto set_itr_val; | |
9d5c8243 | 2731 | } |
6eb5a7f1 | 2732 | avg_wire_size = rx_ring->total_bytes / rx_ring->total_packets; |
9d5c8243 | 2733 | |
6eb5a7f1 AD |
2734 | /* Add 24 bytes to size to account for CRC, preamble, and gap */ |
2735 | avg_wire_size += 24; | |
2736 | ||
2737 | /* Don't starve jumbo frames */ | |
2738 | avg_wire_size = min(avg_wire_size, 3000); | |
9d5c8243 | 2739 | |
6eb5a7f1 AD |
2740 | /* Give a little boost to mid-size frames */ |
2741 | if ((avg_wire_size > 300) && (avg_wire_size < 1200)) | |
2742 | new_val = avg_wire_size / 3; | |
2743 | else | |
2744 | new_val = avg_wire_size / 2; | |
9d5c8243 | 2745 | |
6eb5a7f1 | 2746 | set_itr_val: |
9d5c8243 AK |
2747 | if (new_val != rx_ring->itr_val) { |
2748 | rx_ring->itr_val = new_val; | |
6eb5a7f1 | 2749 | rx_ring->set_itr = 1; |
9d5c8243 | 2750 | } |
6eb5a7f1 AD |
2751 | clear_counts: |
2752 | rx_ring->total_bytes = 0; | |
2753 | rx_ring->total_packets = 0; | |
9d5c8243 AK |
2754 | } |
2755 | ||
2756 | /** | |
2757 | * igb_update_itr - update the dynamic ITR value based on statistics | |
2758 | * Stores a new ITR value based on packets and byte | |
2759 | * counts during the last interrupt. The advantage of per interrupt | |
2760 | * computation is faster updates and more accurate ITR for the current | |
2761 | * traffic pattern. Constants in this function were computed | |
2762 | * based on theoretical maximum wire speed and thresholds were set based | |
2763 | * on testing data as well as attempting to minimize response time | |
2764 | * while increasing bulk throughput. | |
2765 | * this functionality is controlled by the InterruptThrottleRate module | |
2766 | * parameter (see igb_param.c) | |
2767 | * NOTE: These calculations are only valid when operating in a single- | |
2768 | * queue environment. | |
2769 | * @adapter: pointer to adapter | |
2770 | * @itr_setting: current adapter->itr | |
2771 | * @packets: the number of packets during this measurement interval | |
2772 | * @bytes: the number of bytes during this measurement interval | |
2773 | **/ | |
2774 | static unsigned int igb_update_itr(struct igb_adapter *adapter, u16 itr_setting, | |
2775 | int packets, int bytes) | |
2776 | { | |
2777 | unsigned int retval = itr_setting; | |
2778 | ||
2779 | if (packets == 0) | |
2780 | goto update_itr_done; | |
2781 | ||
2782 | switch (itr_setting) { | |
2783 | case lowest_latency: | |
2784 | /* handle TSO and jumbo frames */ | |
2785 | if (bytes/packets > 8000) | |
2786 | retval = bulk_latency; | |
2787 | else if ((packets < 5) && (bytes > 512)) | |
2788 | retval = low_latency; | |
2789 | break; | |
2790 | case low_latency: /* 50 usec aka 20000 ints/s */ | |
2791 | if (bytes > 10000) { | |
2792 | /* this if handles the TSO accounting */ | |
2793 | if (bytes/packets > 8000) { | |
2794 | retval = bulk_latency; | |
2795 | } else if ((packets < 10) || ((bytes/packets) > 1200)) { | |
2796 | retval = bulk_latency; | |
2797 | } else if ((packets > 35)) { | |
2798 | retval = lowest_latency; | |
2799 | } | |
2800 | } else if (bytes/packets > 2000) { | |
2801 | retval = bulk_latency; | |
2802 | } else if (packets <= 2 && bytes < 512) { | |
2803 | retval = lowest_latency; | |
2804 | } | |
2805 | break; | |
2806 | case bulk_latency: /* 250 usec aka 4000 ints/s */ | |
2807 | if (bytes > 25000) { | |
2808 | if (packets > 35) | |
2809 | retval = low_latency; | |
1e5c3d21 | 2810 | } else if (bytes < 1500) { |
9d5c8243 AK |
2811 | retval = low_latency; |
2812 | } | |
2813 | break; | |
2814 | } | |
2815 | ||
2816 | update_itr_done: | |
2817 | return retval; | |
2818 | } | |
2819 | ||
6eb5a7f1 | 2820 | static void igb_set_itr(struct igb_adapter *adapter) |
9d5c8243 AK |
2821 | { |
2822 | u16 current_itr; | |
2823 | u32 new_itr = adapter->itr; | |
2824 | ||
2825 | /* for non-gigabit speeds, just fix the interrupt rate at 4000 */ | |
2826 | if (adapter->link_speed != SPEED_1000) { | |
2827 | current_itr = 0; | |
2828 | new_itr = 4000; | |
2829 | goto set_itr_now; | |
2830 | } | |
2831 | ||
2832 | adapter->rx_itr = igb_update_itr(adapter, | |
2833 | adapter->rx_itr, | |
2834 | adapter->rx_ring->total_packets, | |
2835 | adapter->rx_ring->total_bytes); | |
9d5c8243 | 2836 | |
6eb5a7f1 | 2837 | if (adapter->rx_ring->buddy) { |
9d5c8243 AK |
2838 | adapter->tx_itr = igb_update_itr(adapter, |
2839 | adapter->tx_itr, | |
2840 | adapter->tx_ring->total_packets, | |
2841 | adapter->tx_ring->total_bytes); | |
9d5c8243 AK |
2842 | current_itr = max(adapter->rx_itr, adapter->tx_itr); |
2843 | } else { | |
2844 | current_itr = adapter->rx_itr; | |
2845 | } | |
2846 | ||
6eb5a7f1 | 2847 | /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
73cd78f1 | 2848 | if (adapter->itr_setting == 3 && current_itr == lowest_latency) |
6eb5a7f1 AD |
2849 | current_itr = low_latency; |
2850 | ||
9d5c8243 AK |
2851 | switch (current_itr) { |
2852 | /* counts and packets in update_itr are dependent on these numbers */ | |
2853 | case lowest_latency: | |
2854 | new_itr = 70000; | |
2855 | break; | |
2856 | case low_latency: | |
2857 | new_itr = 20000; /* aka hwitr = ~200 */ | |
2858 | break; | |
2859 | case bulk_latency: | |
2860 | new_itr = 4000; | |
2861 | break; | |
2862 | default: | |
2863 | break; | |
2864 | } | |
2865 | ||
2866 | set_itr_now: | |
6eb5a7f1 AD |
2867 | adapter->rx_ring->total_bytes = 0; |
2868 | adapter->rx_ring->total_packets = 0; | |
2869 | if (adapter->rx_ring->buddy) { | |
2870 | adapter->rx_ring->buddy->total_bytes = 0; | |
2871 | adapter->rx_ring->buddy->total_packets = 0; | |
2872 | } | |
2873 | ||
9d5c8243 AK |
2874 | if (new_itr != adapter->itr) { |
2875 | /* this attempts to bias the interrupt rate towards Bulk | |
2876 | * by adding intermediate steps when interrupt rate is | |
2877 | * increasing */ | |
2878 | new_itr = new_itr > adapter->itr ? | |
2879 | min(adapter->itr + (new_itr >> 2), new_itr) : | |
2880 | new_itr; | |
2881 | /* Don't write the value here; it resets the adapter's | |
2882 | * internal timer, and causes us to delay far longer than | |
2883 | * we should between interrupts. Instead, we write the ITR | |
2884 | * value at the beginning of the next interrupt so the timing | |
2885 | * ends up being correct. | |
2886 | */ | |
2887 | adapter->itr = new_itr; | |
6eb5a7f1 AD |
2888 | adapter->rx_ring->itr_val = 1000000000 / (new_itr * 256); |
2889 | adapter->rx_ring->set_itr = 1; | |
9d5c8243 AK |
2890 | } |
2891 | ||
2892 | return; | |
2893 | } | |
2894 | ||
2895 | ||
2896 | #define IGB_TX_FLAGS_CSUM 0x00000001 | |
2897 | #define IGB_TX_FLAGS_VLAN 0x00000002 | |
2898 | #define IGB_TX_FLAGS_TSO 0x00000004 | |
2899 | #define IGB_TX_FLAGS_IPV4 0x00000008 | |
33af6bcc | 2900 | #define IGB_TX_FLAGS_TSTAMP 0x00000010 |
9d5c8243 AK |
2901 | #define IGB_TX_FLAGS_VLAN_MASK 0xffff0000 |
2902 | #define IGB_TX_FLAGS_VLAN_SHIFT 16 | |
2903 | ||
2904 | static inline int igb_tso_adv(struct igb_adapter *adapter, | |
2905 | struct igb_ring *tx_ring, | |
2906 | struct sk_buff *skb, u32 tx_flags, u8 *hdr_len) | |
2907 | { | |
2908 | struct e1000_adv_tx_context_desc *context_desc; | |
2909 | unsigned int i; | |
2910 | int err; | |
2911 | struct igb_buffer *buffer_info; | |
2912 | u32 info = 0, tu_cmd = 0; | |
2913 | u32 mss_l4len_idx, l4len; | |
2914 | *hdr_len = 0; | |
2915 | ||
2916 | if (skb_header_cloned(skb)) { | |
2917 | err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); | |
2918 | if (err) | |
2919 | return err; | |
2920 | } | |
2921 | ||
2922 | l4len = tcp_hdrlen(skb); | |
2923 | *hdr_len += l4len; | |
2924 | ||
2925 | if (skb->protocol == htons(ETH_P_IP)) { | |
2926 | struct iphdr *iph = ip_hdr(skb); | |
2927 | iph->tot_len = 0; | |
2928 | iph->check = 0; | |
2929 | tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, | |
2930 | iph->daddr, 0, | |
2931 | IPPROTO_TCP, | |
2932 | 0); | |
2933 | } else if (skb_shinfo(skb)->gso_type == SKB_GSO_TCPV6) { | |
2934 | ipv6_hdr(skb)->payload_len = 0; | |
2935 | tcp_hdr(skb)->check = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, | |
2936 | &ipv6_hdr(skb)->daddr, | |
2937 | 0, IPPROTO_TCP, 0); | |
2938 | } | |
2939 | ||
2940 | i = tx_ring->next_to_use; | |
2941 | ||
2942 | buffer_info = &tx_ring->buffer_info[i]; | |
2943 | context_desc = E1000_TX_CTXTDESC_ADV(*tx_ring, i); | |
2944 | /* VLAN MACLEN IPLEN */ | |
2945 | if (tx_flags & IGB_TX_FLAGS_VLAN) | |
2946 | info |= (tx_flags & IGB_TX_FLAGS_VLAN_MASK); | |
2947 | info |= (skb_network_offset(skb) << E1000_ADVTXD_MACLEN_SHIFT); | |
2948 | *hdr_len += skb_network_offset(skb); | |
2949 | info |= skb_network_header_len(skb); | |
2950 | *hdr_len += skb_network_header_len(skb); | |
2951 | context_desc->vlan_macip_lens = cpu_to_le32(info); | |
2952 | ||
2953 | /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */ | |
2954 | tu_cmd |= (E1000_TXD_CMD_DEXT | E1000_ADVTXD_DTYP_CTXT); | |
2955 | ||
2956 | if (skb->protocol == htons(ETH_P_IP)) | |
2957 | tu_cmd |= E1000_ADVTXD_TUCMD_IPV4; | |
2958 | tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP; | |
2959 | ||
2960 | context_desc->type_tucmd_mlhl = cpu_to_le32(tu_cmd); | |
2961 | ||
2962 | /* MSS L4LEN IDX */ | |
2963 | mss_l4len_idx = (skb_shinfo(skb)->gso_size << E1000_ADVTXD_MSS_SHIFT); | |
2964 | mss_l4len_idx |= (l4len << E1000_ADVTXD_L4LEN_SHIFT); | |
2965 | ||
73cd78f1 | 2966 | /* For 82575, context index must be unique per ring. */ |
7dfc16fa AD |
2967 | if (adapter->flags & IGB_FLAG_NEED_CTX_IDX) |
2968 | mss_l4len_idx |= tx_ring->queue_index << 4; | |
9d5c8243 AK |
2969 | |
2970 | context_desc->mss_l4len_idx = cpu_to_le32(mss_l4len_idx); | |
2971 | context_desc->seqnum_seed = 0; | |
2972 | ||
2973 | buffer_info->time_stamp = jiffies; | |
0e014cb1 | 2974 | buffer_info->next_to_watch = i; |
9d5c8243 AK |
2975 | buffer_info->dma = 0; |
2976 | i++; | |
2977 | if (i == tx_ring->count) | |
2978 | i = 0; | |
2979 | ||
2980 | tx_ring->next_to_use = i; | |
2981 | ||
2982 | return true; | |
2983 | } | |
2984 | ||
2985 | static inline bool igb_tx_csum_adv(struct igb_adapter *adapter, | |
2986 | struct igb_ring *tx_ring, | |
2987 | struct sk_buff *skb, u32 tx_flags) | |
2988 | { | |
2989 | struct e1000_adv_tx_context_desc *context_desc; | |
2990 | unsigned int i; | |
2991 | struct igb_buffer *buffer_info; | |
2992 | u32 info = 0, tu_cmd = 0; | |
2993 | ||
2994 | if ((skb->ip_summed == CHECKSUM_PARTIAL) || | |
2995 | (tx_flags & IGB_TX_FLAGS_VLAN)) { | |
2996 | i = tx_ring->next_to_use; | |
2997 | buffer_info = &tx_ring->buffer_info[i]; | |
2998 | context_desc = E1000_TX_CTXTDESC_ADV(*tx_ring, i); | |
2999 | ||
3000 | if (tx_flags & IGB_TX_FLAGS_VLAN) | |
3001 | info |= (tx_flags & IGB_TX_FLAGS_VLAN_MASK); | |
3002 | info |= (skb_network_offset(skb) << E1000_ADVTXD_MACLEN_SHIFT); | |
3003 | if (skb->ip_summed == CHECKSUM_PARTIAL) | |
3004 | info |= skb_network_header_len(skb); | |
3005 | ||
3006 | context_desc->vlan_macip_lens = cpu_to_le32(info); | |
3007 | ||
3008 | tu_cmd |= (E1000_TXD_CMD_DEXT | E1000_ADVTXD_DTYP_CTXT); | |
3009 | ||
3010 | if (skb->ip_summed == CHECKSUM_PARTIAL) { | |
fa4a7ef3 AJ |
3011 | __be16 protocol; |
3012 | ||
3013 | if (skb->protocol == cpu_to_be16(ETH_P_8021Q)) { | |
3014 | const struct vlan_ethhdr *vhdr = | |
3015 | (const struct vlan_ethhdr*)skb->data; | |
3016 | ||
3017 | protocol = vhdr->h_vlan_encapsulated_proto; | |
3018 | } else { | |
3019 | protocol = skb->protocol; | |
3020 | } | |
3021 | ||
3022 | switch (protocol) { | |
09640e63 | 3023 | case cpu_to_be16(ETH_P_IP): |
9d5c8243 | 3024 | tu_cmd |= E1000_ADVTXD_TUCMD_IPV4; |
44b0cda3 MW |
3025 | if (ip_hdr(skb)->protocol == IPPROTO_TCP) |
3026 | tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP; | |
3027 | break; | |
09640e63 | 3028 | case cpu_to_be16(ETH_P_IPV6): |
44b0cda3 MW |
3029 | /* XXX what about other V6 headers?? */ |
3030 | if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP) | |
3031 | tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP; | |
3032 | break; | |
3033 | default: | |
3034 | if (unlikely(net_ratelimit())) | |
3035 | dev_warn(&adapter->pdev->dev, | |
3036 | "partial checksum but proto=%x!\n", | |
3037 | skb->protocol); | |
3038 | break; | |
3039 | } | |
9d5c8243 AK |
3040 | } |
3041 | ||
3042 | context_desc->type_tucmd_mlhl = cpu_to_le32(tu_cmd); | |
3043 | context_desc->seqnum_seed = 0; | |
7dfc16fa AD |
3044 | if (adapter->flags & IGB_FLAG_NEED_CTX_IDX) |
3045 | context_desc->mss_l4len_idx = | |
3046 | cpu_to_le32(tx_ring->queue_index << 4); | |
265de409 AD |
3047 | else |
3048 | context_desc->mss_l4len_idx = 0; | |
9d5c8243 AK |
3049 | |
3050 | buffer_info->time_stamp = jiffies; | |
0e014cb1 | 3051 | buffer_info->next_to_watch = i; |
9d5c8243 AK |
3052 | buffer_info->dma = 0; |
3053 | ||
3054 | i++; | |
3055 | if (i == tx_ring->count) | |
3056 | i = 0; | |
3057 | tx_ring->next_to_use = i; | |
3058 | ||
3059 | return true; | |
3060 | } | |
9d5c8243 AK |
3061 | return false; |
3062 | } | |
3063 | ||
3064 | #define IGB_MAX_TXD_PWR 16 | |
3065 | #define IGB_MAX_DATA_PER_TXD (1<<IGB_MAX_TXD_PWR) | |
3066 | ||
3067 | static inline int igb_tx_map_adv(struct igb_adapter *adapter, | |
0e014cb1 AD |
3068 | struct igb_ring *tx_ring, struct sk_buff *skb, |
3069 | unsigned int first) | |
9d5c8243 AK |
3070 | { |
3071 | struct igb_buffer *buffer_info; | |
3072 | unsigned int len = skb_headlen(skb); | |
3073 | unsigned int count = 0, i; | |
3074 | unsigned int f; | |
3075 | ||
3076 | i = tx_ring->next_to_use; | |
3077 | ||
3078 | buffer_info = &tx_ring->buffer_info[i]; | |
3079 | BUG_ON(len >= IGB_MAX_DATA_PER_TXD); | |
3080 | buffer_info->length = len; | |
3081 | /* set time_stamp *before* dma to help avoid a possible race */ | |
3082 | buffer_info->time_stamp = jiffies; | |
0e014cb1 | 3083 | buffer_info->next_to_watch = i; |
9d5c8243 AK |
3084 | buffer_info->dma = pci_map_single(adapter->pdev, skb->data, len, |
3085 | PCI_DMA_TODEVICE); | |
3086 | count++; | |
3087 | i++; | |
3088 | if (i == tx_ring->count) | |
3089 | i = 0; | |
3090 | ||
3091 | for (f = 0; f < skb_shinfo(skb)->nr_frags; f++) { | |
3092 | struct skb_frag_struct *frag; | |
3093 | ||
3094 | frag = &skb_shinfo(skb)->frags[f]; | |
3095 | len = frag->size; | |
3096 | ||
3097 | buffer_info = &tx_ring->buffer_info[i]; | |
3098 | BUG_ON(len >= IGB_MAX_DATA_PER_TXD); | |
3099 | buffer_info->length = len; | |
3100 | buffer_info->time_stamp = jiffies; | |
0e014cb1 | 3101 | buffer_info->next_to_watch = i; |
9d5c8243 AK |
3102 | buffer_info->dma = pci_map_page(adapter->pdev, |
3103 | frag->page, | |
3104 | frag->page_offset, | |
3105 | len, | |
3106 | PCI_DMA_TODEVICE); | |
3107 | ||
3108 | count++; | |
3109 | i++; | |
3110 | if (i == tx_ring->count) | |
3111 | i = 0; | |
3112 | } | |
3113 | ||
0e014cb1 | 3114 | i = ((i == 0) ? tx_ring->count - 1 : i - 1); |
9d5c8243 | 3115 | tx_ring->buffer_info[i].skb = skb; |
0e014cb1 | 3116 | tx_ring->buffer_info[first].next_to_watch = i; |
9d5c8243 AK |
3117 | |
3118 | return count; | |
3119 | } | |
3120 | ||
3121 | static inline void igb_tx_queue_adv(struct igb_adapter *adapter, | |
3122 | struct igb_ring *tx_ring, | |
3123 | int tx_flags, int count, u32 paylen, | |
3124 | u8 hdr_len) | |
3125 | { | |
3126 | union e1000_adv_tx_desc *tx_desc = NULL; | |
3127 | struct igb_buffer *buffer_info; | |
3128 | u32 olinfo_status = 0, cmd_type_len; | |
3129 | unsigned int i; | |
3130 | ||
3131 | cmd_type_len = (E1000_ADVTXD_DTYP_DATA | E1000_ADVTXD_DCMD_IFCS | | |
3132 | E1000_ADVTXD_DCMD_DEXT); | |
3133 | ||
3134 | if (tx_flags & IGB_TX_FLAGS_VLAN) | |
3135 | cmd_type_len |= E1000_ADVTXD_DCMD_VLE; | |
3136 | ||
33af6bcc PO |
3137 | if (tx_flags & IGB_TX_FLAGS_TSTAMP) |
3138 | cmd_type_len |= E1000_ADVTXD_MAC_TSTAMP; | |
3139 | ||
9d5c8243 AK |
3140 | if (tx_flags & IGB_TX_FLAGS_TSO) { |
3141 | cmd_type_len |= E1000_ADVTXD_DCMD_TSE; | |
3142 | ||
3143 | /* insert tcp checksum */ | |
3144 | olinfo_status |= E1000_TXD_POPTS_TXSM << 8; | |
3145 | ||
3146 | /* insert ip checksum */ | |
3147 | if (tx_flags & IGB_TX_FLAGS_IPV4) | |
3148 | olinfo_status |= E1000_TXD_POPTS_IXSM << 8; | |
3149 | ||
3150 | } else if (tx_flags & IGB_TX_FLAGS_CSUM) { | |
3151 | olinfo_status |= E1000_TXD_POPTS_TXSM << 8; | |
3152 | } | |
3153 | ||
7dfc16fa AD |
3154 | if ((adapter->flags & IGB_FLAG_NEED_CTX_IDX) && |
3155 | (tx_flags & (IGB_TX_FLAGS_CSUM | IGB_TX_FLAGS_TSO | | |
3156 | IGB_TX_FLAGS_VLAN))) | |
661086df | 3157 | olinfo_status |= tx_ring->queue_index << 4; |
9d5c8243 AK |
3158 | |
3159 | olinfo_status |= ((paylen - hdr_len) << E1000_ADVTXD_PAYLEN_SHIFT); | |
3160 | ||
3161 | i = tx_ring->next_to_use; | |
3162 | while (count--) { | |
3163 | buffer_info = &tx_ring->buffer_info[i]; | |
3164 | tx_desc = E1000_TX_DESC_ADV(*tx_ring, i); | |
3165 | tx_desc->read.buffer_addr = cpu_to_le64(buffer_info->dma); | |
3166 | tx_desc->read.cmd_type_len = | |
3167 | cpu_to_le32(cmd_type_len | buffer_info->length); | |
3168 | tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status); | |
3169 | i++; | |
3170 | if (i == tx_ring->count) | |
3171 | i = 0; | |
3172 | } | |
3173 | ||
3174 | tx_desc->read.cmd_type_len |= cpu_to_le32(adapter->txd_cmd); | |
3175 | /* Force memory writes to complete before letting h/w | |
3176 | * know there are new descriptors to fetch. (Only | |
3177 | * applicable for weak-ordered memory model archs, | |
3178 | * such as IA-64). */ | |
3179 | wmb(); | |
3180 | ||
3181 | tx_ring->next_to_use = i; | |
3182 | writel(i, adapter->hw.hw_addr + tx_ring->tail); | |
3183 | /* we need this if more than one processor can write to our tail | |
3184 | * at a time, it syncronizes IO on IA64/Altix systems */ | |
3185 | mmiowb(); | |
3186 | } | |
3187 | ||
3188 | static int __igb_maybe_stop_tx(struct net_device *netdev, | |
3189 | struct igb_ring *tx_ring, int size) | |
3190 | { | |
3191 | struct igb_adapter *adapter = netdev_priv(netdev); | |
3192 | ||
661086df | 3193 | netif_stop_subqueue(netdev, tx_ring->queue_index); |
661086df | 3194 | |
9d5c8243 AK |
3195 | /* Herbert's original patch had: |
3196 | * smp_mb__after_netif_stop_queue(); | |
3197 | * but since that doesn't exist yet, just open code it. */ | |
3198 | smp_mb(); | |
3199 | ||
3200 | /* We need to check again in a case another CPU has just | |
3201 | * made room available. */ | |
3202 | if (IGB_DESC_UNUSED(tx_ring) < size) | |
3203 | return -EBUSY; | |
3204 | ||
3205 | /* A reprieve! */ | |
661086df | 3206 | netif_wake_subqueue(netdev, tx_ring->queue_index); |
9d5c8243 AK |
3207 | ++adapter->restart_queue; |
3208 | return 0; | |
3209 | } | |
3210 | ||
3211 | static int igb_maybe_stop_tx(struct net_device *netdev, | |
3212 | struct igb_ring *tx_ring, int size) | |
3213 | { | |
3214 | if (IGB_DESC_UNUSED(tx_ring) >= size) | |
3215 | return 0; | |
3216 | return __igb_maybe_stop_tx(netdev, tx_ring, size); | |
3217 | } | |
3218 | ||
9d5c8243 AK |
3219 | static int igb_xmit_frame_ring_adv(struct sk_buff *skb, |
3220 | struct net_device *netdev, | |
3221 | struct igb_ring *tx_ring) | |
3222 | { | |
3223 | struct igb_adapter *adapter = netdev_priv(netdev); | |
0e014cb1 | 3224 | unsigned int first; |
9d5c8243 | 3225 | unsigned int tx_flags = 0; |
9d5c8243 AK |
3226 | u8 hdr_len = 0; |
3227 | int tso = 0; | |
33af6bcc | 3228 | union skb_shared_tx *shtx; |
9d5c8243 | 3229 | |
9d5c8243 AK |
3230 | if (test_bit(__IGB_DOWN, &adapter->state)) { |
3231 | dev_kfree_skb_any(skb); | |
3232 | return NETDEV_TX_OK; | |
3233 | } | |
3234 | ||
3235 | if (skb->len <= 0) { | |
3236 | dev_kfree_skb_any(skb); | |
3237 | return NETDEV_TX_OK; | |
3238 | } | |
3239 | ||
9d5c8243 AK |
3240 | /* need: 1 descriptor per page, |
3241 | * + 2 desc gap to keep tail from touching head, | |
3242 | * + 1 desc for skb->data, | |
3243 | * + 1 desc for context descriptor, | |
3244 | * otherwise try next time */ | |
3245 | if (igb_maybe_stop_tx(netdev, tx_ring, skb_shinfo(skb)->nr_frags + 4)) { | |
3246 | /* this is a hard error */ | |
9d5c8243 AK |
3247 | return NETDEV_TX_BUSY; |
3248 | } | |
33af6bcc PO |
3249 | |
3250 | /* | |
3251 | * TODO: check that there currently is no other packet with | |
3252 | * time stamping in the queue | |
3253 | * | |
3254 | * When doing time stamping, keep the connection to the socket | |
3255 | * a while longer: it is still needed by skb_hwtstamp_tx(), | |
3256 | * called either in igb_tx_hwtstamp() or by our caller when | |
3257 | * doing software time stamping. | |
3258 | */ | |
3259 | shtx = skb_tx(skb); | |
3260 | if (unlikely(shtx->hardware)) { | |
3261 | shtx->in_progress = 1; | |
3262 | tx_flags |= IGB_TX_FLAGS_TSTAMP; | |
33af6bcc | 3263 | } |
9d5c8243 AK |
3264 | |
3265 | if (adapter->vlgrp && vlan_tx_tag_present(skb)) { | |
3266 | tx_flags |= IGB_TX_FLAGS_VLAN; | |
3267 | tx_flags |= (vlan_tx_tag_get(skb) << IGB_TX_FLAGS_VLAN_SHIFT); | |
3268 | } | |
3269 | ||
661086df PWJ |
3270 | if (skb->protocol == htons(ETH_P_IP)) |
3271 | tx_flags |= IGB_TX_FLAGS_IPV4; | |
3272 | ||
0e014cb1 | 3273 | first = tx_ring->next_to_use; |
9d5c8243 AK |
3274 | tso = skb_is_gso(skb) ? igb_tso_adv(adapter, tx_ring, skb, tx_flags, |
3275 | &hdr_len) : 0; | |
3276 | ||
3277 | if (tso < 0) { | |
3278 | dev_kfree_skb_any(skb); | |
9d5c8243 AK |
3279 | return NETDEV_TX_OK; |
3280 | } | |
3281 | ||
3282 | if (tso) | |
3283 | tx_flags |= IGB_TX_FLAGS_TSO; | |
bc1cbd34 AD |
3284 | else if (igb_tx_csum_adv(adapter, tx_ring, skb, tx_flags) && |
3285 | (skb->ip_summed == CHECKSUM_PARTIAL)) | |
3286 | tx_flags |= IGB_TX_FLAGS_CSUM; | |
9d5c8243 | 3287 | |
9d5c8243 | 3288 | igb_tx_queue_adv(adapter, tx_ring, tx_flags, |
0e014cb1 | 3289 | igb_tx_map_adv(adapter, tx_ring, skb, first), |
9d5c8243 AK |
3290 | skb->len, hdr_len); |
3291 | ||
3292 | netdev->trans_start = jiffies; | |
3293 | ||
3294 | /* Make sure there is space in the ring for the next send. */ | |
3295 | igb_maybe_stop_tx(netdev, tx_ring, MAX_SKB_FRAGS + 4); | |
3296 | ||
9d5c8243 AK |
3297 | return NETDEV_TX_OK; |
3298 | } | |
3299 | ||
3300 | static int igb_xmit_frame_adv(struct sk_buff *skb, struct net_device *netdev) | |
3301 | { | |
3302 | struct igb_adapter *adapter = netdev_priv(netdev); | |
661086df PWJ |
3303 | struct igb_ring *tx_ring; |
3304 | ||
661086df | 3305 | int r_idx = 0; |
1bfaf07b | 3306 | r_idx = skb->queue_mapping & (IGB_ABS_MAX_TX_QUEUES - 1); |
661086df | 3307 | tx_ring = adapter->multi_tx_table[r_idx]; |
9d5c8243 AK |
3308 | |
3309 | /* This goes back to the question of how to logically map a tx queue | |
3310 | * to a flow. Right now, performance is impacted slightly negatively | |
3311 | * if using multiple tx queues. If the stack breaks away from a | |
3312 | * single qdisc implementation, we can look at this again. */ | |
3313 | return (igb_xmit_frame_ring_adv(skb, netdev, tx_ring)); | |
3314 | } | |
3315 | ||
3316 | /** | |
3317 | * igb_tx_timeout - Respond to a Tx Hang | |
3318 | * @netdev: network interface device structure | |
3319 | **/ | |
3320 | static void igb_tx_timeout(struct net_device *netdev) | |
3321 | { | |
3322 | struct igb_adapter *adapter = netdev_priv(netdev); | |
3323 | struct e1000_hw *hw = &adapter->hw; | |
3324 | ||
3325 | /* Do the reset outside of interrupt context */ | |
3326 | adapter->tx_timeout_count++; | |
3327 | schedule_work(&adapter->reset_task); | |
265de409 AD |
3328 | wr32(E1000_EICS, |
3329 | (adapter->eims_enable_mask & ~adapter->eims_other)); | |
9d5c8243 AK |
3330 | } |
3331 | ||
3332 | static void igb_reset_task(struct work_struct *work) | |
3333 | { | |
3334 | struct igb_adapter *adapter; | |
3335 | adapter = container_of(work, struct igb_adapter, reset_task); | |
3336 | ||
3337 | igb_reinit_locked(adapter); | |
3338 | } | |
3339 | ||
3340 | /** | |
3341 | * igb_get_stats - Get System Network Statistics | |
3342 | * @netdev: network interface device structure | |
3343 | * | |
3344 | * Returns the address of the device statistics structure. | |
3345 | * The statistics are actually updated from the timer callback. | |
3346 | **/ | |
73cd78f1 | 3347 | static struct net_device_stats *igb_get_stats(struct net_device *netdev) |
9d5c8243 AK |
3348 | { |
3349 | struct igb_adapter *adapter = netdev_priv(netdev); | |
3350 | ||
3351 | /* only return the current stats */ | |
3352 | return &adapter->net_stats; | |
3353 | } | |
3354 | ||
3355 | /** | |
3356 | * igb_change_mtu - Change the Maximum Transfer Unit | |
3357 | * @netdev: network interface device structure | |
3358 | * @new_mtu: new value for maximum frame size | |
3359 | * | |
3360 | * Returns 0 on success, negative on failure | |
3361 | **/ | |
3362 | static int igb_change_mtu(struct net_device *netdev, int new_mtu) | |
3363 | { | |
3364 | struct igb_adapter *adapter = netdev_priv(netdev); | |
3365 | int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN; | |
3366 | ||
3367 | if ((max_frame < ETH_ZLEN + ETH_FCS_LEN) || | |
3368 | (max_frame > MAX_JUMBO_FRAME_SIZE)) { | |
3369 | dev_err(&adapter->pdev->dev, "Invalid MTU setting\n"); | |
3370 | return -EINVAL; | |
3371 | } | |
3372 | ||
9d5c8243 AK |
3373 | if (max_frame > MAX_STD_JUMBO_FRAME_SIZE) { |
3374 | dev_err(&adapter->pdev->dev, "MTU > 9216 not supported.\n"); | |
3375 | return -EINVAL; | |
3376 | } | |
3377 | ||
3378 | while (test_and_set_bit(__IGB_RESETTING, &adapter->state)) | |
3379 | msleep(1); | |
73cd78f1 | 3380 | |
9d5c8243 AK |
3381 | /* igb_down has a dependency on max_frame_size */ |
3382 | adapter->max_frame_size = max_frame; | |
3383 | if (netif_running(netdev)) | |
3384 | igb_down(adapter); | |
3385 | ||
3386 | /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN | |
3387 | * means we reserve 2 more, this pushes us to allocate from the next | |
3388 | * larger slab size. | |
3389 | * i.e. RXBUFFER_2048 --> size-4096 slab | |
3390 | */ | |
3391 | ||
3392 | if (max_frame <= IGB_RXBUFFER_256) | |
3393 | adapter->rx_buffer_len = IGB_RXBUFFER_256; | |
3394 | else if (max_frame <= IGB_RXBUFFER_512) | |
3395 | adapter->rx_buffer_len = IGB_RXBUFFER_512; | |
3396 | else if (max_frame <= IGB_RXBUFFER_1024) | |
3397 | adapter->rx_buffer_len = IGB_RXBUFFER_1024; | |
3398 | else if (max_frame <= IGB_RXBUFFER_2048) | |
3399 | adapter->rx_buffer_len = IGB_RXBUFFER_2048; | |
3400 | else | |
bf36c1a0 AD |
3401 | #if (PAGE_SIZE / 2) > IGB_RXBUFFER_16384 |
3402 | adapter->rx_buffer_len = IGB_RXBUFFER_16384; | |
3403 | #else | |
3404 | adapter->rx_buffer_len = PAGE_SIZE / 2; | |
3405 | #endif | |
e1739522 AD |
3406 | |
3407 | /* if sr-iov is enabled we need to force buffer size to 1K or larger */ | |
3408 | if (adapter->vfs_allocated_count && | |
3409 | (adapter->rx_buffer_len < IGB_RXBUFFER_1024)) | |
3410 | adapter->rx_buffer_len = IGB_RXBUFFER_1024; | |
3411 | ||
9d5c8243 AK |
3412 | /* adjust allocation if LPE protects us, and we aren't using SBP */ |
3413 | if ((max_frame == ETH_FRAME_LEN + ETH_FCS_LEN) || | |
3414 | (max_frame == MAXIMUM_ETHERNET_VLAN_SIZE)) | |
3415 | adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE; | |
3416 | ||
3417 | dev_info(&adapter->pdev->dev, "changing MTU from %d to %d\n", | |
3418 | netdev->mtu, new_mtu); | |
3419 | netdev->mtu = new_mtu; | |
3420 | ||
3421 | if (netif_running(netdev)) | |
3422 | igb_up(adapter); | |
3423 | else | |
3424 | igb_reset(adapter); | |
3425 | ||
3426 | clear_bit(__IGB_RESETTING, &adapter->state); | |
3427 | ||
3428 | return 0; | |
3429 | } | |
3430 | ||
3431 | /** | |
3432 | * igb_update_stats - Update the board statistics counters | |
3433 | * @adapter: board private structure | |
3434 | **/ | |
3435 | ||
3436 | void igb_update_stats(struct igb_adapter *adapter) | |
3437 | { | |
3438 | struct e1000_hw *hw = &adapter->hw; | |
3439 | struct pci_dev *pdev = adapter->pdev; | |
3440 | u16 phy_tmp; | |
3441 | ||
3442 | #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF | |
3443 | ||
3444 | /* | |
3445 | * Prevent stats update while adapter is being reset, or if the pci | |
3446 | * connection is down. | |
3447 | */ | |
3448 | if (adapter->link_speed == 0) | |
3449 | return; | |
3450 | if (pci_channel_offline(pdev)) | |
3451 | return; | |
3452 | ||
3453 | adapter->stats.crcerrs += rd32(E1000_CRCERRS); | |
3454 | adapter->stats.gprc += rd32(E1000_GPRC); | |
3455 | adapter->stats.gorc += rd32(E1000_GORCL); | |
3456 | rd32(E1000_GORCH); /* clear GORCL */ | |
3457 | adapter->stats.bprc += rd32(E1000_BPRC); | |
3458 | adapter->stats.mprc += rd32(E1000_MPRC); | |
3459 | adapter->stats.roc += rd32(E1000_ROC); | |
3460 | ||
3461 | adapter->stats.prc64 += rd32(E1000_PRC64); | |
3462 | adapter->stats.prc127 += rd32(E1000_PRC127); | |
3463 | adapter->stats.prc255 += rd32(E1000_PRC255); | |
3464 | adapter->stats.prc511 += rd32(E1000_PRC511); | |
3465 | adapter->stats.prc1023 += rd32(E1000_PRC1023); | |
3466 | adapter->stats.prc1522 += rd32(E1000_PRC1522); | |
3467 | adapter->stats.symerrs += rd32(E1000_SYMERRS); | |
3468 | adapter->stats.sec += rd32(E1000_SEC); | |
3469 | ||
3470 | adapter->stats.mpc += rd32(E1000_MPC); | |
3471 | adapter->stats.scc += rd32(E1000_SCC); | |
3472 | adapter->stats.ecol += rd32(E1000_ECOL); | |
3473 | adapter->stats.mcc += rd32(E1000_MCC); | |
3474 | adapter->stats.latecol += rd32(E1000_LATECOL); | |
3475 | adapter->stats.dc += rd32(E1000_DC); | |
3476 | adapter->stats.rlec += rd32(E1000_RLEC); | |
3477 | adapter->stats.xonrxc += rd32(E1000_XONRXC); | |
3478 | adapter->stats.xontxc += rd32(E1000_XONTXC); | |
3479 | adapter->stats.xoffrxc += rd32(E1000_XOFFRXC); | |
3480 | adapter->stats.xofftxc += rd32(E1000_XOFFTXC); | |
3481 | adapter->stats.fcruc += rd32(E1000_FCRUC); | |
3482 | adapter->stats.gptc += rd32(E1000_GPTC); | |
3483 | adapter->stats.gotc += rd32(E1000_GOTCL); | |
3484 | rd32(E1000_GOTCH); /* clear GOTCL */ | |
3485 | adapter->stats.rnbc += rd32(E1000_RNBC); | |
3486 | adapter->stats.ruc += rd32(E1000_RUC); | |
3487 | adapter->stats.rfc += rd32(E1000_RFC); | |
3488 | adapter->stats.rjc += rd32(E1000_RJC); | |
3489 | adapter->stats.tor += rd32(E1000_TORH); | |
3490 | adapter->stats.tot += rd32(E1000_TOTH); | |
3491 | adapter->stats.tpr += rd32(E1000_TPR); | |
3492 | ||
3493 | adapter->stats.ptc64 += rd32(E1000_PTC64); | |
3494 | adapter->stats.ptc127 += rd32(E1000_PTC127); | |
3495 | adapter->stats.ptc255 += rd32(E1000_PTC255); | |
3496 | adapter->stats.ptc511 += rd32(E1000_PTC511); | |
3497 | adapter->stats.ptc1023 += rd32(E1000_PTC1023); | |
3498 | adapter->stats.ptc1522 += rd32(E1000_PTC1522); | |
3499 | ||
3500 | adapter->stats.mptc += rd32(E1000_MPTC); | |
3501 | adapter->stats.bptc += rd32(E1000_BPTC); | |
3502 | ||
3503 | /* used for adaptive IFS */ | |
3504 | ||
3505 | hw->mac.tx_packet_delta = rd32(E1000_TPT); | |
3506 | adapter->stats.tpt += hw->mac.tx_packet_delta; | |
3507 | hw->mac.collision_delta = rd32(E1000_COLC); | |
3508 | adapter->stats.colc += hw->mac.collision_delta; | |
3509 | ||
3510 | adapter->stats.algnerrc += rd32(E1000_ALGNERRC); | |
3511 | adapter->stats.rxerrc += rd32(E1000_RXERRC); | |
3512 | adapter->stats.tncrs += rd32(E1000_TNCRS); | |
3513 | adapter->stats.tsctc += rd32(E1000_TSCTC); | |
3514 | adapter->stats.tsctfc += rd32(E1000_TSCTFC); | |
3515 | ||
3516 | adapter->stats.iac += rd32(E1000_IAC); | |
3517 | adapter->stats.icrxoc += rd32(E1000_ICRXOC); | |
3518 | adapter->stats.icrxptc += rd32(E1000_ICRXPTC); | |
3519 | adapter->stats.icrxatc += rd32(E1000_ICRXATC); | |
3520 | adapter->stats.ictxptc += rd32(E1000_ICTXPTC); | |
3521 | adapter->stats.ictxatc += rd32(E1000_ICTXATC); | |
3522 | adapter->stats.ictxqec += rd32(E1000_ICTXQEC); | |
3523 | adapter->stats.ictxqmtc += rd32(E1000_ICTXQMTC); | |
3524 | adapter->stats.icrxdmtc += rd32(E1000_ICRXDMTC); | |
3525 | ||
3526 | /* Fill out the OS statistics structure */ | |
3527 | adapter->net_stats.multicast = adapter->stats.mprc; | |
3528 | adapter->net_stats.collisions = adapter->stats.colc; | |
3529 | ||
3530 | /* Rx Errors */ | |
3531 | ||
3532 | /* RLEC on some newer hardware can be incorrect so build | |
3533 | * our own version based on RUC and ROC */ | |
3534 | adapter->net_stats.rx_errors = adapter->stats.rxerrc + | |
3535 | adapter->stats.crcerrs + adapter->stats.algnerrc + | |
3536 | adapter->stats.ruc + adapter->stats.roc + | |
3537 | adapter->stats.cexterr; | |
3538 | adapter->net_stats.rx_length_errors = adapter->stats.ruc + | |
3539 | adapter->stats.roc; | |
3540 | adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs; | |
3541 | adapter->net_stats.rx_frame_errors = adapter->stats.algnerrc; | |
3542 | adapter->net_stats.rx_missed_errors = adapter->stats.mpc; | |
3543 | ||
3544 | /* Tx Errors */ | |
3545 | adapter->net_stats.tx_errors = adapter->stats.ecol + | |
3546 | adapter->stats.latecol; | |
3547 | adapter->net_stats.tx_aborted_errors = adapter->stats.ecol; | |
3548 | adapter->net_stats.tx_window_errors = adapter->stats.latecol; | |
3549 | adapter->net_stats.tx_carrier_errors = adapter->stats.tncrs; | |
3550 | ||
3551 | /* Tx Dropped needs to be maintained elsewhere */ | |
3552 | ||
3553 | /* Phy Stats */ | |
3554 | if (hw->phy.media_type == e1000_media_type_copper) { | |
3555 | if ((adapter->link_speed == SPEED_1000) && | |
73cd78f1 | 3556 | (!igb_read_phy_reg(hw, PHY_1000T_STATUS, &phy_tmp))) { |
9d5c8243 AK |
3557 | phy_tmp &= PHY_IDLE_ERROR_COUNT_MASK; |
3558 | adapter->phy_stats.idle_errors += phy_tmp; | |
3559 | } | |
3560 | } | |
3561 | ||
3562 | /* Management Stats */ | |
3563 | adapter->stats.mgptc += rd32(E1000_MGTPTC); | |
3564 | adapter->stats.mgprc += rd32(E1000_MGTPRC); | |
3565 | adapter->stats.mgpdc += rd32(E1000_MGTPDC); | |
3566 | } | |
3567 | ||
9d5c8243 AK |
3568 | static irqreturn_t igb_msix_other(int irq, void *data) |
3569 | { | |
3570 | struct net_device *netdev = data; | |
3571 | struct igb_adapter *adapter = netdev_priv(netdev); | |
3572 | struct e1000_hw *hw = &adapter->hw; | |
844290e5 | 3573 | u32 icr = rd32(E1000_ICR); |
9d5c8243 | 3574 | |
844290e5 | 3575 | /* reading ICR causes bit 31 of EICR to be cleared */ |
dda0e083 AD |
3576 | |
3577 | if(icr & E1000_ICR_DOUTSYNC) { | |
3578 | /* HW is reporting DMA is out of sync */ | |
3579 | adapter->stats.doosync++; | |
3580 | } | |
eebbbdba | 3581 | |
4ae196df AD |
3582 | /* Check for a mailbox event */ |
3583 | if (icr & E1000_ICR_VMMB) | |
3584 | igb_msg_task(adapter); | |
3585 | ||
3586 | if (icr & E1000_ICR_LSC) { | |
3587 | hw->mac.get_link_status = 1; | |
3588 | /* guard against interrupt when we're going down */ | |
3589 | if (!test_bit(__IGB_DOWN, &adapter->state)) | |
3590 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
3591 | } | |
3592 | ||
3593 | wr32(E1000_IMS, E1000_IMS_LSC | E1000_IMS_DOUTSYNC | E1000_IMS_VMMB); | |
844290e5 | 3594 | wr32(E1000_EIMS, adapter->eims_other); |
9d5c8243 AK |
3595 | |
3596 | return IRQ_HANDLED; | |
3597 | } | |
3598 | ||
3599 | static irqreturn_t igb_msix_tx(int irq, void *data) | |
3600 | { | |
3601 | struct igb_ring *tx_ring = data; | |
3602 | struct igb_adapter *adapter = tx_ring->adapter; | |
3603 | struct e1000_hw *hw = &adapter->hw; | |
3604 | ||
421e02f0 | 3605 | #ifdef CONFIG_IGB_DCA |
7dfc16fa | 3606 | if (adapter->flags & IGB_FLAG_DCA_ENABLED) |
fe4506b6 JC |
3607 | igb_update_tx_dca(tx_ring); |
3608 | #endif | |
73cd78f1 | 3609 | |
9d5c8243 AK |
3610 | tx_ring->total_bytes = 0; |
3611 | tx_ring->total_packets = 0; | |
661086df PWJ |
3612 | |
3613 | /* auto mask will automatically reenable the interrupt when we write | |
3614 | * EICS */ | |
3b644cf6 | 3615 | if (!igb_clean_tx_irq(tx_ring)) |
9d5c8243 AK |
3616 | /* Ring was not completely cleaned, so fire another interrupt */ |
3617 | wr32(E1000_EICS, tx_ring->eims_value); | |
661086df | 3618 | else |
9d5c8243 | 3619 | wr32(E1000_EIMS, tx_ring->eims_value); |
661086df | 3620 | |
9d5c8243 AK |
3621 | return IRQ_HANDLED; |
3622 | } | |
3623 | ||
6eb5a7f1 AD |
3624 | static void igb_write_itr(struct igb_ring *ring) |
3625 | { | |
3626 | struct e1000_hw *hw = &ring->adapter->hw; | |
3627 | if ((ring->adapter->itr_setting & 3) && ring->set_itr) { | |
3628 | switch (hw->mac.type) { | |
3629 | case e1000_82576: | |
73cd78f1 | 3630 | wr32(ring->itr_register, ring->itr_val | |
6eb5a7f1 AD |
3631 | 0x80000000); |
3632 | break; | |
3633 | default: | |
73cd78f1 | 3634 | wr32(ring->itr_register, ring->itr_val | |
6eb5a7f1 AD |
3635 | (ring->itr_val << 16)); |
3636 | break; | |
3637 | } | |
3638 | ring->set_itr = 0; | |
3639 | } | |
3640 | } | |
3641 | ||
9d5c8243 AK |
3642 | static irqreturn_t igb_msix_rx(int irq, void *data) |
3643 | { | |
3644 | struct igb_ring *rx_ring = data; | |
9d5c8243 | 3645 | |
844290e5 PW |
3646 | /* Write the ITR value calculated at the end of the |
3647 | * previous interrupt. | |
3648 | */ | |
9d5c8243 | 3649 | |
6eb5a7f1 | 3650 | igb_write_itr(rx_ring); |
9d5c8243 | 3651 | |
288379f0 BH |
3652 | if (napi_schedule_prep(&rx_ring->napi)) |
3653 | __napi_schedule(&rx_ring->napi); | |
844290e5 | 3654 | |
421e02f0 | 3655 | #ifdef CONFIG_IGB_DCA |
8d253320 | 3656 | if (rx_ring->adapter->flags & IGB_FLAG_DCA_ENABLED) |
fe4506b6 JC |
3657 | igb_update_rx_dca(rx_ring); |
3658 | #endif | |
3659 | return IRQ_HANDLED; | |
3660 | } | |
3661 | ||
421e02f0 | 3662 | #ifdef CONFIG_IGB_DCA |
fe4506b6 JC |
3663 | static void igb_update_rx_dca(struct igb_ring *rx_ring) |
3664 | { | |
3665 | u32 dca_rxctrl; | |
3666 | struct igb_adapter *adapter = rx_ring->adapter; | |
3667 | struct e1000_hw *hw = &adapter->hw; | |
3668 | int cpu = get_cpu(); | |
26bc19ec | 3669 | int q = rx_ring->reg_idx; |
fe4506b6 JC |
3670 | |
3671 | if (rx_ring->cpu != cpu) { | |
3672 | dca_rxctrl = rd32(E1000_DCA_RXCTRL(q)); | |
2d064c06 AD |
3673 | if (hw->mac.type == e1000_82576) { |
3674 | dca_rxctrl &= ~E1000_DCA_RXCTRL_CPUID_MASK_82576; | |
92be7917 | 3675 | dca_rxctrl |= dca3_get_tag(&adapter->pdev->dev, cpu) << |
2d064c06 AD |
3676 | E1000_DCA_RXCTRL_CPUID_SHIFT; |
3677 | } else { | |
3678 | dca_rxctrl &= ~E1000_DCA_RXCTRL_CPUID_MASK; | |
92be7917 | 3679 | dca_rxctrl |= dca3_get_tag(&adapter->pdev->dev, cpu); |
2d064c06 | 3680 | } |
fe4506b6 JC |
3681 | dca_rxctrl |= E1000_DCA_RXCTRL_DESC_DCA_EN; |
3682 | dca_rxctrl |= E1000_DCA_RXCTRL_HEAD_DCA_EN; | |
3683 | dca_rxctrl |= E1000_DCA_RXCTRL_DATA_DCA_EN; | |
3684 | wr32(E1000_DCA_RXCTRL(q), dca_rxctrl); | |
3685 | rx_ring->cpu = cpu; | |
3686 | } | |
3687 | put_cpu(); | |
3688 | } | |
3689 | ||
3690 | static void igb_update_tx_dca(struct igb_ring *tx_ring) | |
3691 | { | |
3692 | u32 dca_txctrl; | |
3693 | struct igb_adapter *adapter = tx_ring->adapter; | |
3694 | struct e1000_hw *hw = &adapter->hw; | |
3695 | int cpu = get_cpu(); | |
26bc19ec | 3696 | int q = tx_ring->reg_idx; |
fe4506b6 JC |
3697 | |
3698 | if (tx_ring->cpu != cpu) { | |
3699 | dca_txctrl = rd32(E1000_DCA_TXCTRL(q)); | |
2d064c06 AD |
3700 | if (hw->mac.type == e1000_82576) { |
3701 | dca_txctrl &= ~E1000_DCA_TXCTRL_CPUID_MASK_82576; | |
92be7917 | 3702 | dca_txctrl |= dca3_get_tag(&adapter->pdev->dev, cpu) << |
2d064c06 AD |
3703 | E1000_DCA_TXCTRL_CPUID_SHIFT; |
3704 | } else { | |
3705 | dca_txctrl &= ~E1000_DCA_TXCTRL_CPUID_MASK; | |
92be7917 | 3706 | dca_txctrl |= dca3_get_tag(&adapter->pdev->dev, cpu); |
2d064c06 | 3707 | } |
fe4506b6 JC |
3708 | dca_txctrl |= E1000_DCA_TXCTRL_DESC_DCA_EN; |
3709 | wr32(E1000_DCA_TXCTRL(q), dca_txctrl); | |
3710 | tx_ring->cpu = cpu; | |
3711 | } | |
3712 | put_cpu(); | |
3713 | } | |
3714 | ||
3715 | static void igb_setup_dca(struct igb_adapter *adapter) | |
3716 | { | |
3717 | int i; | |
3718 | ||
7dfc16fa | 3719 | if (!(adapter->flags & IGB_FLAG_DCA_ENABLED)) |
fe4506b6 JC |
3720 | return; |
3721 | ||
3722 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
3723 | adapter->tx_ring[i].cpu = -1; | |
3724 | igb_update_tx_dca(&adapter->tx_ring[i]); | |
3725 | } | |
3726 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
3727 | adapter->rx_ring[i].cpu = -1; | |
3728 | igb_update_rx_dca(&adapter->rx_ring[i]); | |
3729 | } | |
3730 | } | |
3731 | ||
3732 | static int __igb_notify_dca(struct device *dev, void *data) | |
3733 | { | |
3734 | struct net_device *netdev = dev_get_drvdata(dev); | |
3735 | struct igb_adapter *adapter = netdev_priv(netdev); | |
3736 | struct e1000_hw *hw = &adapter->hw; | |
3737 | unsigned long event = *(unsigned long *)data; | |
3738 | ||
3739 | switch (event) { | |
3740 | case DCA_PROVIDER_ADD: | |
3741 | /* if already enabled, don't do it again */ | |
7dfc16fa | 3742 | if (adapter->flags & IGB_FLAG_DCA_ENABLED) |
fe4506b6 | 3743 | break; |
fe4506b6 JC |
3744 | /* Always use CB2 mode, difference is masked |
3745 | * in the CB driver. */ | |
cbd347ad | 3746 | wr32(E1000_DCA_CTRL, E1000_DCA_CTRL_DCA_MODE_CB2); |
fe4506b6 | 3747 | if (dca_add_requester(dev) == 0) { |
bbd98fe4 | 3748 | adapter->flags |= IGB_FLAG_DCA_ENABLED; |
fe4506b6 JC |
3749 | dev_info(&adapter->pdev->dev, "DCA enabled\n"); |
3750 | igb_setup_dca(adapter); | |
3751 | break; | |
3752 | } | |
3753 | /* Fall Through since DCA is disabled. */ | |
3754 | case DCA_PROVIDER_REMOVE: | |
7dfc16fa | 3755 | if (adapter->flags & IGB_FLAG_DCA_ENABLED) { |
fe4506b6 JC |
3756 | /* without this a class_device is left |
3757 | * hanging around in the sysfs model */ | |
3758 | dca_remove_requester(dev); | |
3759 | dev_info(&adapter->pdev->dev, "DCA disabled\n"); | |
7dfc16fa | 3760 | adapter->flags &= ~IGB_FLAG_DCA_ENABLED; |
cbd347ad | 3761 | wr32(E1000_DCA_CTRL, E1000_DCA_CTRL_DCA_MODE_DISABLE); |
fe4506b6 JC |
3762 | } |
3763 | break; | |
3764 | } | |
bbd98fe4 | 3765 | |
fe4506b6 | 3766 | return 0; |
9d5c8243 AK |
3767 | } |
3768 | ||
fe4506b6 JC |
3769 | static int igb_notify_dca(struct notifier_block *nb, unsigned long event, |
3770 | void *p) | |
3771 | { | |
3772 | int ret_val; | |
3773 | ||
3774 | ret_val = driver_for_each_device(&igb_driver.driver, NULL, &event, | |
3775 | __igb_notify_dca); | |
3776 | ||
3777 | return ret_val ? NOTIFY_BAD : NOTIFY_DONE; | |
3778 | } | |
421e02f0 | 3779 | #endif /* CONFIG_IGB_DCA */ |
9d5c8243 | 3780 | |
4ae196df AD |
3781 | static void igb_ping_all_vfs(struct igb_adapter *adapter) |
3782 | { | |
3783 | struct e1000_hw *hw = &adapter->hw; | |
3784 | u32 ping; | |
3785 | int i; | |
3786 | ||
3787 | for (i = 0 ; i < adapter->vfs_allocated_count; i++) { | |
3788 | ping = E1000_PF_CONTROL_MSG; | |
3789 | if (adapter->vf_data[i].clear_to_send) | |
3790 | ping |= E1000_VT_MSGTYPE_CTS; | |
3791 | igb_write_mbx(hw, &ping, 1, i); | |
3792 | } | |
3793 | } | |
3794 | ||
3795 | static int igb_set_vf_multicasts(struct igb_adapter *adapter, | |
3796 | u32 *msgbuf, u32 vf) | |
3797 | { | |
3798 | int n = (msgbuf[0] & E1000_VT_MSGINFO_MASK) >> E1000_VT_MSGINFO_SHIFT; | |
3799 | u16 *hash_list = (u16 *)&msgbuf[1]; | |
3800 | struct vf_data_storage *vf_data = &adapter->vf_data[vf]; | |
3801 | int i; | |
3802 | ||
3803 | /* only up to 30 hash values supported */ | |
3804 | if (n > 30) | |
3805 | n = 30; | |
3806 | ||
3807 | /* salt away the number of multi cast addresses assigned | |
3808 | * to this VF for later use to restore when the PF multi cast | |
3809 | * list changes | |
3810 | */ | |
3811 | vf_data->num_vf_mc_hashes = n; | |
3812 | ||
3813 | /* VFs are limited to using the MTA hash table for their multicast | |
3814 | * addresses */ | |
3815 | for (i = 0; i < n; i++) | |
3816 | vf_data->vf_mc_hashes[i] = hash_list[i];; | |
3817 | ||
3818 | /* Flush and reset the mta with the new values */ | |
3819 | igb_set_multi(adapter->netdev); | |
3820 | ||
3821 | return 0; | |
3822 | } | |
3823 | ||
3824 | static void igb_restore_vf_multicasts(struct igb_adapter *adapter) | |
3825 | { | |
3826 | struct e1000_hw *hw = &adapter->hw; | |
3827 | struct vf_data_storage *vf_data; | |
3828 | int i, j; | |
3829 | ||
3830 | for (i = 0; i < adapter->vfs_allocated_count; i++) { | |
3831 | vf_data = &adapter->vf_data[i]; | |
75f4f382 | 3832 | for (j = 0; j < vf_data->num_vf_mc_hashes; j++) |
4ae196df AD |
3833 | igb_mta_set(hw, vf_data->vf_mc_hashes[j]); |
3834 | } | |
3835 | } | |
3836 | ||
3837 | static void igb_clear_vf_vfta(struct igb_adapter *adapter, u32 vf) | |
3838 | { | |
3839 | struct e1000_hw *hw = &adapter->hw; | |
3840 | u32 pool_mask, reg, vid; | |
3841 | int i; | |
3842 | ||
3843 | pool_mask = 1 << (E1000_VLVF_POOLSEL_SHIFT + vf); | |
3844 | ||
3845 | /* Find the vlan filter for this id */ | |
3846 | for (i = 0; i < E1000_VLVF_ARRAY_SIZE; i++) { | |
3847 | reg = rd32(E1000_VLVF(i)); | |
3848 | ||
3849 | /* remove the vf from the pool */ | |
3850 | reg &= ~pool_mask; | |
3851 | ||
3852 | /* if pool is empty then remove entry from vfta */ | |
3853 | if (!(reg & E1000_VLVF_POOLSEL_MASK) && | |
3854 | (reg & E1000_VLVF_VLANID_ENABLE)) { | |
3855 | reg = 0; | |
3856 | vid = reg & E1000_VLVF_VLANID_MASK; | |
3857 | igb_vfta_set(hw, vid, false); | |
3858 | } | |
3859 | ||
3860 | wr32(E1000_VLVF(i), reg); | |
3861 | } | |
3862 | } | |
3863 | ||
3864 | static s32 igb_vlvf_set(struct igb_adapter *adapter, u32 vid, bool add, u32 vf) | |
3865 | { | |
3866 | struct e1000_hw *hw = &adapter->hw; | |
3867 | u32 reg, i; | |
3868 | ||
3869 | /* It is an error to call this function when VFs are not enabled */ | |
3870 | if (!adapter->vfs_allocated_count) | |
3871 | return -1; | |
3872 | ||
3873 | /* Find the vlan filter for this id */ | |
3874 | for (i = 0; i < E1000_VLVF_ARRAY_SIZE; i++) { | |
3875 | reg = rd32(E1000_VLVF(i)); | |
3876 | if ((reg & E1000_VLVF_VLANID_ENABLE) && | |
3877 | vid == (reg & E1000_VLVF_VLANID_MASK)) | |
3878 | break; | |
3879 | } | |
3880 | ||
3881 | if (add) { | |
3882 | if (i == E1000_VLVF_ARRAY_SIZE) { | |
3883 | /* Did not find a matching VLAN ID entry that was | |
3884 | * enabled. Search for a free filter entry, i.e. | |
3885 | * one without the enable bit set | |
3886 | */ | |
3887 | for (i = 0; i < E1000_VLVF_ARRAY_SIZE; i++) { | |
3888 | reg = rd32(E1000_VLVF(i)); | |
3889 | if (!(reg & E1000_VLVF_VLANID_ENABLE)) | |
3890 | break; | |
3891 | } | |
3892 | } | |
3893 | if (i < E1000_VLVF_ARRAY_SIZE) { | |
3894 | /* Found an enabled/available entry */ | |
3895 | reg |= 1 << (E1000_VLVF_POOLSEL_SHIFT + vf); | |
3896 | ||
3897 | /* if !enabled we need to set this up in vfta */ | |
3898 | if (!(reg & E1000_VLVF_VLANID_ENABLE)) { | |
cad6d05f AD |
3899 | /* add VID to filter table, if bit already set |
3900 | * PF must have added it outside of table */ | |
3901 | if (igb_vfta_set(hw, vid, true)) | |
3902 | reg |= 1 << (E1000_VLVF_POOLSEL_SHIFT + | |
3903 | adapter->vfs_allocated_count); | |
4ae196df AD |
3904 | reg |= E1000_VLVF_VLANID_ENABLE; |
3905 | } | |
cad6d05f AD |
3906 | reg &= ~E1000_VLVF_VLANID_MASK; |
3907 | reg |= vid; | |
4ae196df AD |
3908 | |
3909 | wr32(E1000_VLVF(i), reg); | |
3910 | return 0; | |
3911 | } | |
3912 | } else { | |
3913 | if (i < E1000_VLVF_ARRAY_SIZE) { | |
3914 | /* remove vf from the pool */ | |
3915 | reg &= ~(1 << (E1000_VLVF_POOLSEL_SHIFT + vf)); | |
3916 | /* if pool is empty then remove entry from vfta */ | |
3917 | if (!(reg & E1000_VLVF_POOLSEL_MASK)) { | |
3918 | reg = 0; | |
3919 | igb_vfta_set(hw, vid, false); | |
3920 | } | |
3921 | wr32(E1000_VLVF(i), reg); | |
3922 | return 0; | |
3923 | } | |
3924 | } | |
3925 | return -1; | |
3926 | } | |
3927 | ||
3928 | static int igb_set_vf_vlan(struct igb_adapter *adapter, u32 *msgbuf, u32 vf) | |
3929 | { | |
3930 | int add = (msgbuf[0] & E1000_VT_MSGINFO_MASK) >> E1000_VT_MSGINFO_SHIFT; | |
3931 | int vid = (msgbuf[1] & E1000_VLVF_VLANID_MASK); | |
3932 | ||
3933 | return igb_vlvf_set(adapter, vid, add, vf); | |
3934 | } | |
3935 | ||
3936 | static inline void igb_vf_reset_event(struct igb_adapter *adapter, u32 vf) | |
3937 | { | |
3938 | struct e1000_hw *hw = &adapter->hw; | |
3939 | ||
3940 | /* disable mailbox functionality for vf */ | |
3941 | adapter->vf_data[vf].clear_to_send = false; | |
3942 | ||
3943 | /* reset offloads to defaults */ | |
3944 | igb_set_vmolr(hw, vf); | |
3945 | ||
3946 | /* reset vlans for device */ | |
3947 | igb_clear_vf_vfta(adapter, vf); | |
3948 | ||
3949 | /* reset multicast table array for vf */ | |
3950 | adapter->vf_data[vf].num_vf_mc_hashes = 0; | |
3951 | ||
3952 | /* Flush and reset the mta with the new values */ | |
3953 | igb_set_multi(adapter->netdev); | |
3954 | } | |
3955 | ||
3956 | static inline void igb_vf_reset_msg(struct igb_adapter *adapter, u32 vf) | |
3957 | { | |
3958 | struct e1000_hw *hw = &adapter->hw; | |
3959 | unsigned char *vf_mac = adapter->vf_data[vf].vf_mac_addresses; | |
3960 | u32 reg, msgbuf[3]; | |
3961 | u8 *addr = (u8 *)(&msgbuf[1]); | |
3962 | ||
3963 | /* process all the same items cleared in a function level reset */ | |
3964 | igb_vf_reset_event(adapter, vf); | |
3965 | ||
3966 | /* set vf mac address */ | |
3967 | igb_rar_set(hw, vf_mac, vf + 1); | |
3968 | igb_set_rah_pool(hw, vf, vf + 1); | |
3969 | ||
3970 | /* enable transmit and receive for vf */ | |
3971 | reg = rd32(E1000_VFTE); | |
3972 | wr32(E1000_VFTE, reg | (1 << vf)); | |
3973 | reg = rd32(E1000_VFRE); | |
3974 | wr32(E1000_VFRE, reg | (1 << vf)); | |
3975 | ||
3976 | /* enable mailbox functionality for vf */ | |
3977 | adapter->vf_data[vf].clear_to_send = true; | |
3978 | ||
3979 | /* reply to reset with ack and vf mac address */ | |
3980 | msgbuf[0] = E1000_VF_RESET | E1000_VT_MSGTYPE_ACK; | |
3981 | memcpy(addr, vf_mac, 6); | |
3982 | igb_write_mbx(hw, msgbuf, 3, vf); | |
3983 | } | |
3984 | ||
3985 | static int igb_set_vf_mac_addr(struct igb_adapter *adapter, u32 *msg, int vf) | |
3986 | { | |
3987 | unsigned char *addr = (char *)&msg[1]; | |
3988 | int err = -1; | |
3989 | ||
3990 | if (is_valid_ether_addr(addr)) | |
3991 | err = igb_set_vf_mac(adapter, vf, addr); | |
3992 | ||
3993 | return err; | |
3994 | ||
3995 | } | |
3996 | ||
3997 | static void igb_rcv_ack_from_vf(struct igb_adapter *adapter, u32 vf) | |
3998 | { | |
3999 | struct e1000_hw *hw = &adapter->hw; | |
4000 | u32 msg = E1000_VT_MSGTYPE_NACK; | |
4001 | ||
4002 | /* if device isn't clear to send it shouldn't be reading either */ | |
4003 | if (!adapter->vf_data[vf].clear_to_send) | |
4004 | igb_write_mbx(hw, &msg, 1, vf); | |
4005 | } | |
4006 | ||
4007 | ||
4008 | static void igb_msg_task(struct igb_adapter *adapter) | |
4009 | { | |
4010 | struct e1000_hw *hw = &adapter->hw; | |
4011 | u32 vf; | |
4012 | ||
4013 | for (vf = 0; vf < adapter->vfs_allocated_count; vf++) { | |
4014 | /* process any reset requests */ | |
4015 | if (!igb_check_for_rst(hw, vf)) { | |
4016 | adapter->vf_data[vf].clear_to_send = false; | |
4017 | igb_vf_reset_event(adapter, vf); | |
4018 | } | |
4019 | ||
4020 | /* process any messages pending */ | |
4021 | if (!igb_check_for_msg(hw, vf)) | |
4022 | igb_rcv_msg_from_vf(adapter, vf); | |
4023 | ||
4024 | /* process any acks */ | |
4025 | if (!igb_check_for_ack(hw, vf)) | |
4026 | igb_rcv_ack_from_vf(adapter, vf); | |
4027 | ||
4028 | } | |
4029 | } | |
4030 | ||
4031 | static int igb_rcv_msg_from_vf(struct igb_adapter *adapter, u32 vf) | |
4032 | { | |
4033 | u32 mbx_size = E1000_VFMAILBOX_SIZE; | |
4034 | u32 msgbuf[mbx_size]; | |
4035 | struct e1000_hw *hw = &adapter->hw; | |
4036 | s32 retval; | |
4037 | ||
4038 | retval = igb_read_mbx(hw, msgbuf, mbx_size, vf); | |
4039 | ||
4040 | if (retval) | |
4041 | dev_err(&adapter->pdev->dev, | |
4042 | "Error receiving message from VF\n"); | |
4043 | ||
4044 | /* this is a message we already processed, do nothing */ | |
4045 | if (msgbuf[0] & (E1000_VT_MSGTYPE_ACK | E1000_VT_MSGTYPE_NACK)) | |
4046 | return retval; | |
4047 | ||
4048 | /* | |
4049 | * until the vf completes a reset it should not be | |
4050 | * allowed to start any configuration. | |
4051 | */ | |
4052 | ||
4053 | if (msgbuf[0] == E1000_VF_RESET) { | |
4054 | igb_vf_reset_msg(adapter, vf); | |
4055 | ||
4056 | return retval; | |
4057 | } | |
4058 | ||
4059 | if (!adapter->vf_data[vf].clear_to_send) { | |
4060 | msgbuf[0] |= E1000_VT_MSGTYPE_NACK; | |
4061 | igb_write_mbx(hw, msgbuf, 1, vf); | |
4062 | return retval; | |
4063 | } | |
4064 | ||
4065 | switch ((msgbuf[0] & 0xFFFF)) { | |
4066 | case E1000_VF_SET_MAC_ADDR: | |
4067 | retval = igb_set_vf_mac_addr(adapter, msgbuf, vf); | |
4068 | break; | |
4069 | case E1000_VF_SET_MULTICAST: | |
4070 | retval = igb_set_vf_multicasts(adapter, msgbuf, vf); | |
4071 | break; | |
4072 | case E1000_VF_SET_LPE: | |
4073 | retval = igb_set_vf_rlpml(adapter, msgbuf[1], vf); | |
4074 | break; | |
4075 | case E1000_VF_SET_VLAN: | |
4076 | retval = igb_set_vf_vlan(adapter, msgbuf, vf); | |
4077 | break; | |
4078 | default: | |
4079 | dev_err(&adapter->pdev->dev, "Unhandled Msg %08x\n", msgbuf[0]); | |
4080 | retval = -1; | |
4081 | break; | |
4082 | } | |
4083 | ||
4084 | /* notify the VF of the results of what it sent us */ | |
4085 | if (retval) | |
4086 | msgbuf[0] |= E1000_VT_MSGTYPE_NACK; | |
4087 | else | |
4088 | msgbuf[0] |= E1000_VT_MSGTYPE_ACK; | |
4089 | ||
4090 | msgbuf[0] |= E1000_VT_MSGTYPE_CTS; | |
4091 | ||
4092 | igb_write_mbx(hw, msgbuf, 1, vf); | |
4093 | ||
4094 | return retval; | |
4095 | } | |
4096 | ||
9d5c8243 AK |
4097 | /** |
4098 | * igb_intr_msi - Interrupt Handler | |
4099 | * @irq: interrupt number | |
4100 | * @data: pointer to a network interface device structure | |
4101 | **/ | |
4102 | static irqreturn_t igb_intr_msi(int irq, void *data) | |
4103 | { | |
4104 | struct net_device *netdev = data; | |
4105 | struct igb_adapter *adapter = netdev_priv(netdev); | |
9d5c8243 AK |
4106 | struct e1000_hw *hw = &adapter->hw; |
4107 | /* read ICR disables interrupts using IAM */ | |
4108 | u32 icr = rd32(E1000_ICR); | |
4109 | ||
6eb5a7f1 | 4110 | igb_write_itr(adapter->rx_ring); |
9d5c8243 | 4111 | |
dda0e083 AD |
4112 | if(icr & E1000_ICR_DOUTSYNC) { |
4113 | /* HW is reporting DMA is out of sync */ | |
4114 | adapter->stats.doosync++; | |
4115 | } | |
4116 | ||
9d5c8243 AK |
4117 | if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) { |
4118 | hw->mac.get_link_status = 1; | |
4119 | if (!test_bit(__IGB_DOWN, &adapter->state)) | |
4120 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
4121 | } | |
4122 | ||
288379f0 | 4123 | napi_schedule(&adapter->rx_ring[0].napi); |
9d5c8243 AK |
4124 | |
4125 | return IRQ_HANDLED; | |
4126 | } | |
4127 | ||
4128 | /** | |
4a3c6433 | 4129 | * igb_intr - Legacy Interrupt Handler |
9d5c8243 AK |
4130 | * @irq: interrupt number |
4131 | * @data: pointer to a network interface device structure | |
4132 | **/ | |
4133 | static irqreturn_t igb_intr(int irq, void *data) | |
4134 | { | |
4135 | struct net_device *netdev = data; | |
4136 | struct igb_adapter *adapter = netdev_priv(netdev); | |
9d5c8243 AK |
4137 | struct e1000_hw *hw = &adapter->hw; |
4138 | /* Interrupt Auto-Mask...upon reading ICR, interrupts are masked. No | |
4139 | * need for the IMC write */ | |
4140 | u32 icr = rd32(E1000_ICR); | |
9d5c8243 AK |
4141 | if (!icr) |
4142 | return IRQ_NONE; /* Not our interrupt */ | |
4143 | ||
6eb5a7f1 | 4144 | igb_write_itr(adapter->rx_ring); |
9d5c8243 AK |
4145 | |
4146 | /* IMS will not auto-mask if INT_ASSERTED is not set, and if it is | |
4147 | * not set, then the adapter didn't send an interrupt */ | |
4148 | if (!(icr & E1000_ICR_INT_ASSERTED)) | |
4149 | return IRQ_NONE; | |
4150 | ||
dda0e083 AD |
4151 | if(icr & E1000_ICR_DOUTSYNC) { |
4152 | /* HW is reporting DMA is out of sync */ | |
4153 | adapter->stats.doosync++; | |
4154 | } | |
4155 | ||
9d5c8243 AK |
4156 | if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) { |
4157 | hw->mac.get_link_status = 1; | |
4158 | /* guard against interrupt when we're going down */ | |
4159 | if (!test_bit(__IGB_DOWN, &adapter->state)) | |
4160 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
4161 | } | |
4162 | ||
288379f0 | 4163 | napi_schedule(&adapter->rx_ring[0].napi); |
9d5c8243 AK |
4164 | |
4165 | return IRQ_HANDLED; | |
4166 | } | |
4167 | ||
46544258 | 4168 | static inline void igb_rx_irq_enable(struct igb_ring *rx_ring) |
9d5c8243 | 4169 | { |
661086df | 4170 | struct igb_adapter *adapter = rx_ring->adapter; |
46544258 | 4171 | struct e1000_hw *hw = &adapter->hw; |
9d5c8243 | 4172 | |
46544258 AD |
4173 | if (adapter->itr_setting & 3) { |
4174 | if (adapter->num_rx_queues == 1) | |
6eb5a7f1 | 4175 | igb_set_itr(adapter); |
46544258 AD |
4176 | else |
4177 | igb_update_ring_itr(rx_ring); | |
9d5c8243 AK |
4178 | } |
4179 | ||
46544258 AD |
4180 | if (!test_bit(__IGB_DOWN, &adapter->state)) { |
4181 | if (adapter->msix_entries) | |
4182 | wr32(E1000_EIMS, rx_ring->eims_value); | |
4183 | else | |
4184 | igb_irq_enable(adapter); | |
4185 | } | |
9d5c8243 AK |
4186 | } |
4187 | ||
46544258 AD |
4188 | /** |
4189 | * igb_poll - NAPI Rx polling callback | |
4190 | * @napi: napi polling structure | |
4191 | * @budget: count of how many packets we should handle | |
4192 | **/ | |
4193 | static int igb_poll(struct napi_struct *napi, int budget) | |
9d5c8243 AK |
4194 | { |
4195 | struct igb_ring *rx_ring = container_of(napi, struct igb_ring, napi); | |
9d5c8243 AK |
4196 | int work_done = 0; |
4197 | ||
421e02f0 | 4198 | #ifdef CONFIG_IGB_DCA |
bd38e5d1 | 4199 | if (rx_ring->adapter->flags & IGB_FLAG_DCA_ENABLED) |
fe4506b6 JC |
4200 | igb_update_rx_dca(rx_ring); |
4201 | #endif | |
3b644cf6 | 4202 | igb_clean_rx_irq_adv(rx_ring, &work_done, budget); |
9d5c8243 | 4203 | |
46544258 AD |
4204 | if (rx_ring->buddy) { |
4205 | #ifdef CONFIG_IGB_DCA | |
bd38e5d1 | 4206 | if (rx_ring->adapter->flags & IGB_FLAG_DCA_ENABLED) |
46544258 AD |
4207 | igb_update_tx_dca(rx_ring->buddy); |
4208 | #endif | |
4209 | if (!igb_clean_tx_irq(rx_ring->buddy)) | |
4210 | work_done = budget; | |
4211 | } | |
4212 | ||
9d5c8243 | 4213 | /* If not enough Rx work done, exit the polling mode */ |
5e6d5b17 | 4214 | if (work_done < budget) { |
288379f0 | 4215 | napi_complete(napi); |
46544258 | 4216 | igb_rx_irq_enable(rx_ring); |
9d5c8243 AK |
4217 | } |
4218 | ||
46544258 | 4219 | return work_done; |
9d5c8243 | 4220 | } |
6d8126f9 | 4221 | |
33af6bcc PO |
4222 | /** |
4223 | * igb_hwtstamp - utility function which checks for TX time stamp | |
4224 | * @adapter: board private structure | |
4225 | * @skb: packet that was just sent | |
4226 | * | |
4227 | * If we were asked to do hardware stamping and such a time stamp is | |
4228 | * available, then it must have been for this skb here because we only | |
4229 | * allow only one such packet into the queue. | |
4230 | */ | |
4231 | static void igb_tx_hwtstamp(struct igb_adapter *adapter, struct sk_buff *skb) | |
4232 | { | |
4233 | union skb_shared_tx *shtx = skb_tx(skb); | |
4234 | struct e1000_hw *hw = &adapter->hw; | |
4235 | ||
4236 | if (unlikely(shtx->hardware)) { | |
4237 | u32 valid = rd32(E1000_TSYNCTXCTL) & E1000_TSYNCTXCTL_VALID; | |
4238 | if (valid) { | |
4239 | u64 regval = rd32(E1000_TXSTMPL); | |
4240 | u64 ns; | |
4241 | struct skb_shared_hwtstamps shhwtstamps; | |
4242 | ||
4243 | memset(&shhwtstamps, 0, sizeof(shhwtstamps)); | |
4244 | regval |= (u64)rd32(E1000_TXSTMPH) << 32; | |
4245 | ns = timecounter_cyc2time(&adapter->clock, | |
4246 | regval); | |
4247 | timecompare_update(&adapter->compare, ns); | |
4248 | shhwtstamps.hwtstamp = ns_to_ktime(ns); | |
4249 | shhwtstamps.syststamp = | |
4250 | timecompare_transform(&adapter->compare, ns); | |
4251 | skb_tstamp_tx(skb, &shhwtstamps); | |
4252 | } | |
33af6bcc PO |
4253 | } |
4254 | } | |
4255 | ||
9d5c8243 AK |
4256 | /** |
4257 | * igb_clean_tx_irq - Reclaim resources after transmit completes | |
4258 | * @adapter: board private structure | |
4259 | * returns true if ring is completely cleaned | |
4260 | **/ | |
3b644cf6 | 4261 | static bool igb_clean_tx_irq(struct igb_ring *tx_ring) |
9d5c8243 | 4262 | { |
3b644cf6 | 4263 | struct igb_adapter *adapter = tx_ring->adapter; |
3b644cf6 | 4264 | struct net_device *netdev = adapter->netdev; |
0e014cb1 | 4265 | struct e1000_hw *hw = &adapter->hw; |
9d5c8243 AK |
4266 | struct igb_buffer *buffer_info; |
4267 | struct sk_buff *skb; | |
0e014cb1 | 4268 | union e1000_adv_tx_desc *tx_desc, *eop_desc; |
9d5c8243 | 4269 | unsigned int total_bytes = 0, total_packets = 0; |
0e014cb1 AD |
4270 | unsigned int i, eop, count = 0; |
4271 | bool cleaned = false; | |
9d5c8243 | 4272 | |
9d5c8243 | 4273 | i = tx_ring->next_to_clean; |
0e014cb1 AD |
4274 | eop = tx_ring->buffer_info[i].next_to_watch; |
4275 | eop_desc = E1000_TX_DESC_ADV(*tx_ring, eop); | |
4276 | ||
4277 | while ((eop_desc->wb.status & cpu_to_le32(E1000_TXD_STAT_DD)) && | |
4278 | (count < tx_ring->count)) { | |
4279 | for (cleaned = false; !cleaned; count++) { | |
4280 | tx_desc = E1000_TX_DESC_ADV(*tx_ring, i); | |
9d5c8243 | 4281 | buffer_info = &tx_ring->buffer_info[i]; |
0e014cb1 | 4282 | cleaned = (i == eop); |
9d5c8243 AK |
4283 | skb = buffer_info->skb; |
4284 | ||
4285 | if (skb) { | |
4286 | unsigned int segs, bytecount; | |
4287 | /* gso_segs is currently only valid for tcp */ | |
4288 | segs = skb_shinfo(skb)->gso_segs ?: 1; | |
4289 | /* multiply data chunks by size of headers */ | |
4290 | bytecount = ((segs - 1) * skb_headlen(skb)) + | |
4291 | skb->len; | |
4292 | total_packets += segs; | |
4293 | total_bytes += bytecount; | |
33af6bcc PO |
4294 | |
4295 | igb_tx_hwtstamp(adapter, skb); | |
9d5c8243 AK |
4296 | } |
4297 | ||
4298 | igb_unmap_and_free_tx_resource(adapter, buffer_info); | |
0e014cb1 | 4299 | tx_desc->wb.status = 0; |
9d5c8243 AK |
4300 | |
4301 | i++; | |
4302 | if (i == tx_ring->count) | |
4303 | i = 0; | |
9d5c8243 | 4304 | } |
0e014cb1 AD |
4305 | eop = tx_ring->buffer_info[i].next_to_watch; |
4306 | eop_desc = E1000_TX_DESC_ADV(*tx_ring, eop); | |
4307 | } | |
4308 | ||
9d5c8243 AK |
4309 | tx_ring->next_to_clean = i; |
4310 | ||
fc7d345d | 4311 | if (unlikely(count && |
9d5c8243 AK |
4312 | netif_carrier_ok(netdev) && |
4313 | IGB_DESC_UNUSED(tx_ring) >= IGB_TX_QUEUE_WAKE)) { | |
4314 | /* Make sure that anybody stopping the queue after this | |
4315 | * sees the new next_to_clean. | |
4316 | */ | |
4317 | smp_mb(); | |
661086df PWJ |
4318 | if (__netif_subqueue_stopped(netdev, tx_ring->queue_index) && |
4319 | !(test_bit(__IGB_DOWN, &adapter->state))) { | |
4320 | netif_wake_subqueue(netdev, tx_ring->queue_index); | |
4321 | ++adapter->restart_queue; | |
4322 | } | |
9d5c8243 AK |
4323 | } |
4324 | ||
4325 | if (tx_ring->detect_tx_hung) { | |
4326 | /* Detect a transmit hang in hardware, this serializes the | |
4327 | * check with the clearing of time_stamp and movement of i */ | |
4328 | tx_ring->detect_tx_hung = false; | |
4329 | if (tx_ring->buffer_info[i].time_stamp && | |
4330 | time_after(jiffies, tx_ring->buffer_info[i].time_stamp + | |
4331 | (adapter->tx_timeout_factor * HZ)) | |
4332 | && !(rd32(E1000_STATUS) & | |
4333 | E1000_STATUS_TXOFF)) { | |
4334 | ||
9d5c8243 AK |
4335 | /* detected Tx unit hang */ |
4336 | dev_err(&adapter->pdev->dev, | |
4337 | "Detected Tx Unit Hang\n" | |
2d064c06 | 4338 | " Tx Queue <%d>\n" |
9d5c8243 AK |
4339 | " TDH <%x>\n" |
4340 | " TDT <%x>\n" | |
4341 | " next_to_use <%x>\n" | |
4342 | " next_to_clean <%x>\n" | |
9d5c8243 AK |
4343 | "buffer_info[next_to_clean]\n" |
4344 | " time_stamp <%lx>\n" | |
0e014cb1 | 4345 | " next_to_watch <%x>\n" |
9d5c8243 AK |
4346 | " jiffies <%lx>\n" |
4347 | " desc.status <%x>\n", | |
2d064c06 | 4348 | tx_ring->queue_index, |
9d5c8243 AK |
4349 | readl(adapter->hw.hw_addr + tx_ring->head), |
4350 | readl(adapter->hw.hw_addr + tx_ring->tail), | |
4351 | tx_ring->next_to_use, | |
4352 | tx_ring->next_to_clean, | |
9d5c8243 | 4353 | tx_ring->buffer_info[i].time_stamp, |
0e014cb1 | 4354 | eop, |
9d5c8243 | 4355 | jiffies, |
0e014cb1 | 4356 | eop_desc->wb.status); |
661086df | 4357 | netif_stop_subqueue(netdev, tx_ring->queue_index); |
9d5c8243 AK |
4358 | } |
4359 | } | |
4360 | tx_ring->total_bytes += total_bytes; | |
4361 | tx_ring->total_packets += total_packets; | |
e21ed353 AD |
4362 | tx_ring->tx_stats.bytes += total_bytes; |
4363 | tx_ring->tx_stats.packets += total_packets; | |
9d5c8243 AK |
4364 | adapter->net_stats.tx_bytes += total_bytes; |
4365 | adapter->net_stats.tx_packets += total_packets; | |
0e014cb1 | 4366 | return (count < tx_ring->count); |
9d5c8243 AK |
4367 | } |
4368 | ||
9d5c8243 AK |
4369 | /** |
4370 | * igb_receive_skb - helper function to handle rx indications | |
eebbbdba | 4371 | * @ring: pointer to receive ring receving this packet |
9d5c8243 | 4372 | * @status: descriptor status field as written by hardware |
73cd78f1 | 4373 | * @rx_desc: receive descriptor containing vlan and type information. |
9d5c8243 AK |
4374 | * @skb: pointer to sk_buff to be indicated to stack |
4375 | **/ | |
d3352520 AD |
4376 | static void igb_receive_skb(struct igb_ring *ring, u8 status, |
4377 | union e1000_adv_rx_desc * rx_desc, | |
4378 | struct sk_buff *skb) | |
4379 | { | |
4380 | struct igb_adapter * adapter = ring->adapter; | |
4381 | bool vlan_extracted = (adapter->vlgrp && (status & E1000_RXD_STAT_VP)); | |
4382 | ||
0c8dfc83 | 4383 | skb_record_rx_queue(skb, ring->queue_index); |
5c0999b7 | 4384 | if (skb->ip_summed == CHECKSUM_UNNECESSARY) { |
d3352520 | 4385 | if (vlan_extracted) |
5c0999b7 HX |
4386 | vlan_gro_receive(&ring->napi, adapter->vlgrp, |
4387 | le16_to_cpu(rx_desc->wb.upper.vlan), | |
4388 | skb); | |
d3352520 | 4389 | else |
5c0999b7 | 4390 | napi_gro_receive(&ring->napi, skb); |
d3352520 | 4391 | } else { |
d3352520 AD |
4392 | if (vlan_extracted) |
4393 | vlan_hwaccel_receive_skb(skb, adapter->vlgrp, | |
4394 | le16_to_cpu(rx_desc->wb.upper.vlan)); | |
4395 | else | |
d3352520 | 4396 | netif_receive_skb(skb); |
d3352520 | 4397 | } |
9d5c8243 AK |
4398 | } |
4399 | ||
9d5c8243 AK |
4400 | static inline void igb_rx_checksum_adv(struct igb_adapter *adapter, |
4401 | u32 status_err, struct sk_buff *skb) | |
4402 | { | |
4403 | skb->ip_summed = CHECKSUM_NONE; | |
4404 | ||
4405 | /* Ignore Checksum bit is set or checksum is disabled through ethtool */ | |
4406 | if ((status_err & E1000_RXD_STAT_IXSM) || !adapter->rx_csum) | |
4407 | return; | |
4408 | /* TCP/UDP checksum error bit is set */ | |
4409 | if (status_err & | |
4410 | (E1000_RXDEXT_STATERR_TCPE | E1000_RXDEXT_STATERR_IPE)) { | |
4411 | /* let the stack verify checksum errors */ | |
4412 | adapter->hw_csum_err++; | |
4413 | return; | |
4414 | } | |
4415 | /* It must be a TCP or UDP packet with a valid checksum */ | |
4416 | if (status_err & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS)) | |
4417 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
4418 | ||
4419 | adapter->hw_csum_good++; | |
4420 | } | |
4421 | ||
3b644cf6 MW |
4422 | static bool igb_clean_rx_irq_adv(struct igb_ring *rx_ring, |
4423 | int *work_done, int budget) | |
9d5c8243 | 4424 | { |
3b644cf6 | 4425 | struct igb_adapter *adapter = rx_ring->adapter; |
9d5c8243 | 4426 | struct net_device *netdev = adapter->netdev; |
33af6bcc | 4427 | struct e1000_hw *hw = &adapter->hw; |
9d5c8243 AK |
4428 | struct pci_dev *pdev = adapter->pdev; |
4429 | union e1000_adv_rx_desc *rx_desc , *next_rxd; | |
4430 | struct igb_buffer *buffer_info , *next_buffer; | |
4431 | struct sk_buff *skb; | |
9d5c8243 AK |
4432 | bool cleaned = false; |
4433 | int cleaned_count = 0; | |
4434 | unsigned int total_bytes = 0, total_packets = 0; | |
73cd78f1 AD |
4435 | unsigned int i; |
4436 | u32 length, hlen, staterr; | |
9d5c8243 AK |
4437 | |
4438 | i = rx_ring->next_to_clean; | |
69d3ca53 | 4439 | buffer_info = &rx_ring->buffer_info[i]; |
9d5c8243 AK |
4440 | rx_desc = E1000_RX_DESC_ADV(*rx_ring, i); |
4441 | staterr = le32_to_cpu(rx_desc->wb.upper.status_error); | |
4442 | ||
4443 | while (staterr & E1000_RXD_STAT_DD) { | |
4444 | if (*work_done >= budget) | |
4445 | break; | |
4446 | (*work_done)++; | |
9d5c8243 | 4447 | |
69d3ca53 AD |
4448 | skb = buffer_info->skb; |
4449 | prefetch(skb->data - NET_IP_ALIGN); | |
4450 | buffer_info->skb = NULL; | |
4451 | ||
4452 | i++; | |
4453 | if (i == rx_ring->count) | |
4454 | i = 0; | |
4455 | next_rxd = E1000_RX_DESC_ADV(*rx_ring, i); | |
4456 | prefetch(next_rxd); | |
4457 | next_buffer = &rx_ring->buffer_info[i]; | |
9d5c8243 AK |
4458 | |
4459 | length = le16_to_cpu(rx_desc->wb.upper.length); | |
4460 | cleaned = true; | |
4461 | cleaned_count++; | |
4462 | ||
bf36c1a0 AD |
4463 | if (!adapter->rx_ps_hdr_size) { |
4464 | pci_unmap_single(pdev, buffer_info->dma, | |
4465 | adapter->rx_buffer_len + | |
4466 | NET_IP_ALIGN, | |
4467 | PCI_DMA_FROMDEVICE); | |
4468 | skb_put(skb, length); | |
4469 | goto send_up; | |
9d5c8243 AK |
4470 | } |
4471 | ||
69d3ca53 AD |
4472 | /* HW will not DMA in data larger than the given buffer, even |
4473 | * if it parses the (NFS, of course) header to be larger. In | |
4474 | * that case, it fills the header buffer and spills the rest | |
4475 | * into the page. | |
4476 | */ | |
4477 | hlen = (le16_to_cpu(rx_desc->wb.lower.lo_dword.hdr_info) & | |
4478 | E1000_RXDADV_HDRBUFLEN_MASK) >> E1000_RXDADV_HDRBUFLEN_SHIFT; | |
4479 | if (hlen > adapter->rx_ps_hdr_size) | |
4480 | hlen = adapter->rx_ps_hdr_size; | |
4481 | ||
bf36c1a0 AD |
4482 | if (!skb_shinfo(skb)->nr_frags) { |
4483 | pci_unmap_single(pdev, buffer_info->dma, | |
73cd78f1 | 4484 | adapter->rx_ps_hdr_size + NET_IP_ALIGN, |
bf36c1a0 AD |
4485 | PCI_DMA_FROMDEVICE); |
4486 | skb_put(skb, hlen); | |
4487 | } | |
4488 | ||
4489 | if (length) { | |
9d5c8243 | 4490 | pci_unmap_page(pdev, buffer_info->page_dma, |
bf36c1a0 | 4491 | PAGE_SIZE / 2, PCI_DMA_FROMDEVICE); |
9d5c8243 | 4492 | buffer_info->page_dma = 0; |
bf36c1a0 AD |
4493 | |
4494 | skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags++, | |
4495 | buffer_info->page, | |
4496 | buffer_info->page_offset, | |
4497 | length); | |
4498 | ||
4499 | if ((adapter->rx_buffer_len > (PAGE_SIZE / 2)) || | |
4500 | (page_count(buffer_info->page) != 1)) | |
4501 | buffer_info->page = NULL; | |
4502 | else | |
4503 | get_page(buffer_info->page); | |
9d5c8243 AK |
4504 | |
4505 | skb->len += length; | |
4506 | skb->data_len += length; | |
9d5c8243 | 4507 | |
bf36c1a0 | 4508 | skb->truesize += length; |
9d5c8243 | 4509 | } |
9d5c8243 | 4510 | |
bf36c1a0 | 4511 | if (!(staterr & E1000_RXD_STAT_EOP)) { |
b2d56536 AD |
4512 | buffer_info->skb = next_buffer->skb; |
4513 | buffer_info->dma = next_buffer->dma; | |
4514 | next_buffer->skb = skb; | |
4515 | next_buffer->dma = 0; | |
bf36c1a0 AD |
4516 | goto next_desc; |
4517 | } | |
69d3ca53 | 4518 | send_up: |
33af6bcc PO |
4519 | /* |
4520 | * If this bit is set, then the RX registers contain | |
4521 | * the time stamp. No other packet will be time | |
4522 | * stamped until we read these registers, so read the | |
4523 | * registers to make them available again. Because | |
4524 | * only one packet can be time stamped at a time, we | |
4525 | * know that the register values must belong to this | |
4526 | * one here and therefore we don't need to compare | |
4527 | * any of the additional attributes stored for it. | |
4528 | * | |
4529 | * If nothing went wrong, then it should have a | |
4530 | * skb_shared_tx that we can turn into a | |
4531 | * skb_shared_hwtstamps. | |
4532 | * | |
4533 | * TODO: can time stamping be triggered (thus locking | |
4534 | * the registers) without the packet reaching this point | |
4535 | * here? In that case RX time stamping would get stuck. | |
4536 | * | |
4537 | * TODO: in "time stamp all packets" mode this bit is | |
4538 | * not set. Need a global flag for this mode and then | |
4539 | * always read the registers. Cannot be done without | |
4540 | * a race condition. | |
4541 | */ | |
4542 | if (unlikely(staterr & E1000_RXD_STAT_TS)) { | |
4543 | u64 regval; | |
4544 | u64 ns; | |
4545 | struct skb_shared_hwtstamps *shhwtstamps = | |
4546 | skb_hwtstamps(skb); | |
4547 | ||
4548 | WARN(!(rd32(E1000_TSYNCRXCTL) & E1000_TSYNCRXCTL_VALID), | |
4549 | "igb: no RX time stamp available for time stamped packet"); | |
4550 | regval = rd32(E1000_RXSTMPL); | |
4551 | regval |= (u64)rd32(E1000_RXSTMPH) << 32; | |
4552 | ns = timecounter_cyc2time(&adapter->clock, regval); | |
4553 | timecompare_update(&adapter->compare, ns); | |
4554 | memset(shhwtstamps, 0, sizeof(*shhwtstamps)); | |
4555 | shhwtstamps->hwtstamp = ns_to_ktime(ns); | |
4556 | shhwtstamps->syststamp = | |
4557 | timecompare_transform(&adapter->compare, ns); | |
4558 | } | |
4559 | ||
9d5c8243 AK |
4560 | if (staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) { |
4561 | dev_kfree_skb_irq(skb); | |
4562 | goto next_desc; | |
4563 | } | |
9d5c8243 AK |
4564 | |
4565 | total_bytes += skb->len; | |
4566 | total_packets++; | |
4567 | ||
4568 | igb_rx_checksum_adv(adapter, staterr, skb); | |
4569 | ||
4570 | skb->protocol = eth_type_trans(skb, netdev); | |
4571 | ||
d3352520 | 4572 | igb_receive_skb(rx_ring, staterr, rx_desc, skb); |
9d5c8243 | 4573 | |
9d5c8243 AK |
4574 | next_desc: |
4575 | rx_desc->wb.upper.status_error = 0; | |
4576 | ||
4577 | /* return some buffers to hardware, one at a time is too slow */ | |
4578 | if (cleaned_count >= IGB_RX_BUFFER_WRITE) { | |
3b644cf6 | 4579 | igb_alloc_rx_buffers_adv(rx_ring, cleaned_count); |
9d5c8243 AK |
4580 | cleaned_count = 0; |
4581 | } | |
4582 | ||
4583 | /* use prefetched values */ | |
4584 | rx_desc = next_rxd; | |
4585 | buffer_info = next_buffer; | |
9d5c8243 AK |
4586 | staterr = le32_to_cpu(rx_desc->wb.upper.status_error); |
4587 | } | |
bf36c1a0 | 4588 | |
9d5c8243 AK |
4589 | rx_ring->next_to_clean = i; |
4590 | cleaned_count = IGB_DESC_UNUSED(rx_ring); | |
4591 | ||
4592 | if (cleaned_count) | |
3b644cf6 | 4593 | igb_alloc_rx_buffers_adv(rx_ring, cleaned_count); |
9d5c8243 AK |
4594 | |
4595 | rx_ring->total_packets += total_packets; | |
4596 | rx_ring->total_bytes += total_bytes; | |
4597 | rx_ring->rx_stats.packets += total_packets; | |
4598 | rx_ring->rx_stats.bytes += total_bytes; | |
4599 | adapter->net_stats.rx_bytes += total_bytes; | |
4600 | adapter->net_stats.rx_packets += total_packets; | |
4601 | return cleaned; | |
4602 | } | |
4603 | ||
9d5c8243 AK |
4604 | /** |
4605 | * igb_alloc_rx_buffers_adv - Replace used receive buffers; packet split | |
4606 | * @adapter: address of board private structure | |
4607 | **/ | |
3b644cf6 | 4608 | static void igb_alloc_rx_buffers_adv(struct igb_ring *rx_ring, |
9d5c8243 AK |
4609 | int cleaned_count) |
4610 | { | |
3b644cf6 | 4611 | struct igb_adapter *adapter = rx_ring->adapter; |
9d5c8243 AK |
4612 | struct net_device *netdev = adapter->netdev; |
4613 | struct pci_dev *pdev = adapter->pdev; | |
4614 | union e1000_adv_rx_desc *rx_desc; | |
4615 | struct igb_buffer *buffer_info; | |
4616 | struct sk_buff *skb; | |
4617 | unsigned int i; | |
db761762 | 4618 | int bufsz; |
9d5c8243 AK |
4619 | |
4620 | i = rx_ring->next_to_use; | |
4621 | buffer_info = &rx_ring->buffer_info[i]; | |
4622 | ||
db761762 AD |
4623 | if (adapter->rx_ps_hdr_size) |
4624 | bufsz = adapter->rx_ps_hdr_size; | |
4625 | else | |
4626 | bufsz = adapter->rx_buffer_len; | |
4627 | bufsz += NET_IP_ALIGN; | |
4628 | ||
9d5c8243 AK |
4629 | while (cleaned_count--) { |
4630 | rx_desc = E1000_RX_DESC_ADV(*rx_ring, i); | |
4631 | ||
bf36c1a0 | 4632 | if (adapter->rx_ps_hdr_size && !buffer_info->page_dma) { |
9d5c8243 | 4633 | if (!buffer_info->page) { |
bf36c1a0 AD |
4634 | buffer_info->page = alloc_page(GFP_ATOMIC); |
4635 | if (!buffer_info->page) { | |
4636 | adapter->alloc_rx_buff_failed++; | |
4637 | goto no_buffers; | |
4638 | } | |
4639 | buffer_info->page_offset = 0; | |
4640 | } else { | |
4641 | buffer_info->page_offset ^= PAGE_SIZE / 2; | |
9d5c8243 AK |
4642 | } |
4643 | buffer_info->page_dma = | |
db761762 | 4644 | pci_map_page(pdev, buffer_info->page, |
bf36c1a0 AD |
4645 | buffer_info->page_offset, |
4646 | PAGE_SIZE / 2, | |
9d5c8243 AK |
4647 | PCI_DMA_FROMDEVICE); |
4648 | } | |
4649 | ||
4650 | if (!buffer_info->skb) { | |
9d5c8243 | 4651 | skb = netdev_alloc_skb(netdev, bufsz); |
9d5c8243 AK |
4652 | if (!skb) { |
4653 | adapter->alloc_rx_buff_failed++; | |
4654 | goto no_buffers; | |
4655 | } | |
4656 | ||
4657 | /* Make buffer alignment 2 beyond a 16 byte boundary | |
4658 | * this will result in a 16 byte aligned IP header after | |
4659 | * the 14 byte MAC header is removed | |
4660 | */ | |
4661 | skb_reserve(skb, NET_IP_ALIGN); | |
4662 | ||
4663 | buffer_info->skb = skb; | |
4664 | buffer_info->dma = pci_map_single(pdev, skb->data, | |
4665 | bufsz, | |
4666 | PCI_DMA_FROMDEVICE); | |
9d5c8243 AK |
4667 | } |
4668 | /* Refresh the desc even if buffer_addrs didn't change because | |
4669 | * each write-back erases this info. */ | |
4670 | if (adapter->rx_ps_hdr_size) { | |
4671 | rx_desc->read.pkt_addr = | |
4672 | cpu_to_le64(buffer_info->page_dma); | |
4673 | rx_desc->read.hdr_addr = cpu_to_le64(buffer_info->dma); | |
4674 | } else { | |
4675 | rx_desc->read.pkt_addr = | |
4676 | cpu_to_le64(buffer_info->dma); | |
4677 | rx_desc->read.hdr_addr = 0; | |
4678 | } | |
4679 | ||
4680 | i++; | |
4681 | if (i == rx_ring->count) | |
4682 | i = 0; | |
4683 | buffer_info = &rx_ring->buffer_info[i]; | |
4684 | } | |
4685 | ||
4686 | no_buffers: | |
4687 | if (rx_ring->next_to_use != i) { | |
4688 | rx_ring->next_to_use = i; | |
4689 | if (i == 0) | |
4690 | i = (rx_ring->count - 1); | |
4691 | else | |
4692 | i--; | |
4693 | ||
4694 | /* Force memory writes to complete before letting h/w | |
4695 | * know there are new descriptors to fetch. (Only | |
4696 | * applicable for weak-ordered memory model archs, | |
4697 | * such as IA-64). */ | |
4698 | wmb(); | |
4699 | writel(i, adapter->hw.hw_addr + rx_ring->tail); | |
4700 | } | |
4701 | } | |
4702 | ||
4703 | /** | |
4704 | * igb_mii_ioctl - | |
4705 | * @netdev: | |
4706 | * @ifreq: | |
4707 | * @cmd: | |
4708 | **/ | |
4709 | static int igb_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) | |
4710 | { | |
4711 | struct igb_adapter *adapter = netdev_priv(netdev); | |
4712 | struct mii_ioctl_data *data = if_mii(ifr); | |
4713 | ||
4714 | if (adapter->hw.phy.media_type != e1000_media_type_copper) | |
4715 | return -EOPNOTSUPP; | |
4716 | ||
4717 | switch (cmd) { | |
4718 | case SIOCGMIIPHY: | |
4719 | data->phy_id = adapter->hw.phy.addr; | |
4720 | break; | |
4721 | case SIOCGMIIREG: | |
4722 | if (!capable(CAP_NET_ADMIN)) | |
4723 | return -EPERM; | |
f5f4cf08 AD |
4724 | if (igb_read_phy_reg(&adapter->hw, data->reg_num & 0x1F, |
4725 | &data->val_out)) | |
9d5c8243 AK |
4726 | return -EIO; |
4727 | break; | |
4728 | case SIOCSMIIREG: | |
4729 | default: | |
4730 | return -EOPNOTSUPP; | |
4731 | } | |
4732 | return 0; | |
4733 | } | |
4734 | ||
c6cb090b PO |
4735 | /** |
4736 | * igb_hwtstamp_ioctl - control hardware time stamping | |
4737 | * @netdev: | |
4738 | * @ifreq: | |
4739 | * @cmd: | |
4740 | * | |
33af6bcc PO |
4741 | * Outgoing time stamping can be enabled and disabled. Play nice and |
4742 | * disable it when requested, although it shouldn't case any overhead | |
4743 | * when no packet needs it. At most one packet in the queue may be | |
4744 | * marked for time stamping, otherwise it would be impossible to tell | |
4745 | * for sure to which packet the hardware time stamp belongs. | |
4746 | * | |
4747 | * Incoming time stamping has to be configured via the hardware | |
4748 | * filters. Not all combinations are supported, in particular event | |
4749 | * type has to be specified. Matching the kind of event packet is | |
4750 | * not supported, with the exception of "all V2 events regardless of | |
4751 | * level 2 or 4". | |
4752 | * | |
c6cb090b PO |
4753 | **/ |
4754 | static int igb_hwtstamp_ioctl(struct net_device *netdev, | |
4755 | struct ifreq *ifr, int cmd) | |
4756 | { | |
33af6bcc PO |
4757 | struct igb_adapter *adapter = netdev_priv(netdev); |
4758 | struct e1000_hw *hw = &adapter->hw; | |
c6cb090b | 4759 | struct hwtstamp_config config; |
33af6bcc PO |
4760 | u32 tsync_tx_ctl_bit = E1000_TSYNCTXCTL_ENABLED; |
4761 | u32 tsync_rx_ctl_bit = E1000_TSYNCRXCTL_ENABLED; | |
4762 | u32 tsync_rx_ctl_type = 0; | |
4763 | u32 tsync_rx_cfg = 0; | |
4764 | int is_l4 = 0; | |
4765 | int is_l2 = 0; | |
4766 | short port = 319; /* PTP */ | |
4767 | u32 regval; | |
c6cb090b PO |
4768 | |
4769 | if (copy_from_user(&config, ifr->ifr_data, sizeof(config))) | |
4770 | return -EFAULT; | |
4771 | ||
4772 | /* reserved for future extensions */ | |
4773 | if (config.flags) | |
4774 | return -EINVAL; | |
4775 | ||
33af6bcc PO |
4776 | switch (config.tx_type) { |
4777 | case HWTSTAMP_TX_OFF: | |
4778 | tsync_tx_ctl_bit = 0; | |
4779 | break; | |
4780 | case HWTSTAMP_TX_ON: | |
4781 | tsync_tx_ctl_bit = E1000_TSYNCTXCTL_ENABLED; | |
4782 | break; | |
4783 | default: | |
4784 | return -ERANGE; | |
4785 | } | |
4786 | ||
4787 | switch (config.rx_filter) { | |
4788 | case HWTSTAMP_FILTER_NONE: | |
4789 | tsync_rx_ctl_bit = 0; | |
4790 | break; | |
4791 | case HWTSTAMP_FILTER_PTP_V1_L4_EVENT: | |
4792 | case HWTSTAMP_FILTER_PTP_V2_L4_EVENT: | |
4793 | case HWTSTAMP_FILTER_PTP_V2_L2_EVENT: | |
4794 | case HWTSTAMP_FILTER_ALL: | |
4795 | /* | |
4796 | * register TSYNCRXCFG must be set, therefore it is not | |
4797 | * possible to time stamp both Sync and Delay_Req messages | |
4798 | * => fall back to time stamping all packets | |
4799 | */ | |
4800 | tsync_rx_ctl_type = E1000_TSYNCRXCTL_TYPE_ALL; | |
4801 | config.rx_filter = HWTSTAMP_FILTER_ALL; | |
4802 | break; | |
4803 | case HWTSTAMP_FILTER_PTP_V1_L4_SYNC: | |
4804 | tsync_rx_ctl_type = E1000_TSYNCRXCTL_TYPE_L4_V1; | |
4805 | tsync_rx_cfg = E1000_TSYNCRXCFG_PTP_V1_SYNC_MESSAGE; | |
4806 | is_l4 = 1; | |
4807 | break; | |
4808 | case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ: | |
4809 | tsync_rx_ctl_type = E1000_TSYNCRXCTL_TYPE_L4_V1; | |
4810 | tsync_rx_cfg = E1000_TSYNCRXCFG_PTP_V1_DELAY_REQ_MESSAGE; | |
4811 | is_l4 = 1; | |
4812 | break; | |
4813 | case HWTSTAMP_FILTER_PTP_V2_L2_SYNC: | |
4814 | case HWTSTAMP_FILTER_PTP_V2_L4_SYNC: | |
4815 | tsync_rx_ctl_type = E1000_TSYNCRXCTL_TYPE_L2_L4_V2; | |
4816 | tsync_rx_cfg = E1000_TSYNCRXCFG_PTP_V2_SYNC_MESSAGE; | |
4817 | is_l2 = 1; | |
4818 | is_l4 = 1; | |
4819 | config.rx_filter = HWTSTAMP_FILTER_SOME; | |
4820 | break; | |
4821 | case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ: | |
4822 | case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ: | |
4823 | tsync_rx_ctl_type = E1000_TSYNCRXCTL_TYPE_L2_L4_V2; | |
4824 | tsync_rx_cfg = E1000_TSYNCRXCFG_PTP_V2_DELAY_REQ_MESSAGE; | |
4825 | is_l2 = 1; | |
4826 | is_l4 = 1; | |
4827 | config.rx_filter = HWTSTAMP_FILTER_SOME; | |
4828 | break; | |
4829 | case HWTSTAMP_FILTER_PTP_V2_EVENT: | |
4830 | case HWTSTAMP_FILTER_PTP_V2_SYNC: | |
4831 | case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ: | |
4832 | tsync_rx_ctl_type = E1000_TSYNCRXCTL_TYPE_EVENT_V2; | |
4833 | config.rx_filter = HWTSTAMP_FILTER_PTP_V2_EVENT; | |
4834 | is_l2 = 1; | |
4835 | break; | |
4836 | default: | |
4837 | return -ERANGE; | |
4838 | } | |
4839 | ||
4840 | /* enable/disable TX */ | |
4841 | regval = rd32(E1000_TSYNCTXCTL); | |
4842 | regval = (regval & ~E1000_TSYNCTXCTL_ENABLED) | tsync_tx_ctl_bit; | |
4843 | wr32(E1000_TSYNCTXCTL, regval); | |
4844 | ||
4845 | /* enable/disable RX, define which PTP packets are time stamped */ | |
4846 | regval = rd32(E1000_TSYNCRXCTL); | |
4847 | regval = (regval & ~E1000_TSYNCRXCTL_ENABLED) | tsync_rx_ctl_bit; | |
4848 | regval = (regval & ~0xE) | tsync_rx_ctl_type; | |
4849 | wr32(E1000_TSYNCRXCTL, regval); | |
4850 | wr32(E1000_TSYNCRXCFG, tsync_rx_cfg); | |
4851 | ||
4852 | /* | |
4853 | * Ethertype Filter Queue Filter[0][15:0] = 0x88F7 | |
4854 | * (Ethertype to filter on) | |
4855 | * Ethertype Filter Queue Filter[0][26] = 0x1 (Enable filter) | |
4856 | * Ethertype Filter Queue Filter[0][30] = 0x1 (Enable Timestamping) | |
4857 | */ | |
4858 | wr32(E1000_ETQF0, is_l2 ? 0x440088f7 : 0); | |
4859 | ||
4860 | /* L4 Queue Filter[0]: only filter by source and destination port */ | |
4861 | wr32(E1000_SPQF0, htons(port)); | |
4862 | wr32(E1000_IMIREXT(0), is_l4 ? | |
4863 | ((1<<12) | (1<<19) /* bypass size and control flags */) : 0); | |
4864 | wr32(E1000_IMIR(0), is_l4 ? | |
4865 | (htons(port) | |
4866 | | (0<<16) /* immediate interrupt disabled */ | |
4867 | | 0 /* (1<<17) bit cleared: do not bypass | |
4868 | destination port check */) | |
4869 | : 0); | |
4870 | wr32(E1000_FTQF0, is_l4 ? | |
4871 | (0x11 /* UDP */ | |
4872 | | (1<<15) /* VF not compared */ | |
4873 | | (1<<27) /* Enable Timestamping */ | |
4874 | | (7<<28) /* only source port filter enabled, | |
4875 | source/target address and protocol | |
4876 | masked */) | |
4877 | : ((1<<15) | (15<<28) /* all mask bits set = filter not | |
4878 | enabled */)); | |
4879 | ||
4880 | wrfl(); | |
4881 | ||
4882 | adapter->hwtstamp_config = config; | |
4883 | ||
4884 | /* clear TX/RX time stamp registers, just to be sure */ | |
4885 | regval = rd32(E1000_TXSTMPH); | |
4886 | regval = rd32(E1000_RXSTMPH); | |
c6cb090b | 4887 | |
33af6bcc PO |
4888 | return copy_to_user(ifr->ifr_data, &config, sizeof(config)) ? |
4889 | -EFAULT : 0; | |
c6cb090b PO |
4890 | } |
4891 | ||
9d5c8243 AK |
4892 | /** |
4893 | * igb_ioctl - | |
4894 | * @netdev: | |
4895 | * @ifreq: | |
4896 | * @cmd: | |
4897 | **/ | |
4898 | static int igb_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) | |
4899 | { | |
4900 | switch (cmd) { | |
4901 | case SIOCGMIIPHY: | |
4902 | case SIOCGMIIREG: | |
4903 | case SIOCSMIIREG: | |
4904 | return igb_mii_ioctl(netdev, ifr, cmd); | |
c6cb090b PO |
4905 | case SIOCSHWTSTAMP: |
4906 | return igb_hwtstamp_ioctl(netdev, ifr, cmd); | |
9d5c8243 AK |
4907 | default: |
4908 | return -EOPNOTSUPP; | |
4909 | } | |
4910 | } | |
4911 | ||
4912 | static void igb_vlan_rx_register(struct net_device *netdev, | |
4913 | struct vlan_group *grp) | |
4914 | { | |
4915 | struct igb_adapter *adapter = netdev_priv(netdev); | |
4916 | struct e1000_hw *hw = &adapter->hw; | |
4917 | u32 ctrl, rctl; | |
4918 | ||
4919 | igb_irq_disable(adapter); | |
4920 | adapter->vlgrp = grp; | |
4921 | ||
4922 | if (grp) { | |
4923 | /* enable VLAN tag insert/strip */ | |
4924 | ctrl = rd32(E1000_CTRL); | |
4925 | ctrl |= E1000_CTRL_VME; | |
4926 | wr32(E1000_CTRL, ctrl); | |
4927 | ||
4928 | /* enable VLAN receive filtering */ | |
4929 | rctl = rd32(E1000_RCTL); | |
9d5c8243 AK |
4930 | rctl &= ~E1000_RCTL_CFIEN; |
4931 | wr32(E1000_RCTL, rctl); | |
4932 | igb_update_mng_vlan(adapter); | |
9d5c8243 AK |
4933 | } else { |
4934 | /* disable VLAN tag insert/strip */ | |
4935 | ctrl = rd32(E1000_CTRL); | |
4936 | ctrl &= ~E1000_CTRL_VME; | |
4937 | wr32(E1000_CTRL, ctrl); | |
4938 | ||
9d5c8243 AK |
4939 | if (adapter->mng_vlan_id != (u16)IGB_MNG_VLAN_NONE) { |
4940 | igb_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); | |
4941 | adapter->mng_vlan_id = IGB_MNG_VLAN_NONE; | |
4942 | } | |
9d5c8243 AK |
4943 | } |
4944 | ||
e1739522 AD |
4945 | igb_rlpml_set(adapter); |
4946 | ||
9d5c8243 AK |
4947 | if (!test_bit(__IGB_DOWN, &adapter->state)) |
4948 | igb_irq_enable(adapter); | |
4949 | } | |
4950 | ||
4951 | static void igb_vlan_rx_add_vid(struct net_device *netdev, u16 vid) | |
4952 | { | |
4953 | struct igb_adapter *adapter = netdev_priv(netdev); | |
4954 | struct e1000_hw *hw = &adapter->hw; | |
4ae196df | 4955 | int pf_id = adapter->vfs_allocated_count; |
9d5c8243 | 4956 | |
28b0759c | 4957 | if ((hw->mng_cookie.status & |
9d5c8243 AK |
4958 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN) && |
4959 | (vid == adapter->mng_vlan_id)) | |
4960 | return; | |
4ae196df AD |
4961 | |
4962 | /* add vid to vlvf if sr-iov is enabled, | |
4963 | * if that fails add directly to filter table */ | |
4964 | if (igb_vlvf_set(adapter, vid, true, pf_id)) | |
4965 | igb_vfta_set(hw, vid, true); | |
4966 | ||
9d5c8243 AK |
4967 | } |
4968 | ||
4969 | static void igb_vlan_rx_kill_vid(struct net_device *netdev, u16 vid) | |
4970 | { | |
4971 | struct igb_adapter *adapter = netdev_priv(netdev); | |
4972 | struct e1000_hw *hw = &adapter->hw; | |
4ae196df | 4973 | int pf_id = adapter->vfs_allocated_count; |
9d5c8243 AK |
4974 | |
4975 | igb_irq_disable(adapter); | |
4976 | vlan_group_set_device(adapter->vlgrp, vid, NULL); | |
4977 | ||
4978 | if (!test_bit(__IGB_DOWN, &adapter->state)) | |
4979 | igb_irq_enable(adapter); | |
4980 | ||
4981 | if ((adapter->hw.mng_cookie.status & | |
4982 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN) && | |
4983 | (vid == adapter->mng_vlan_id)) { | |
4984 | /* release control to f/w */ | |
4985 | igb_release_hw_control(adapter); | |
4986 | return; | |
4987 | } | |
4988 | ||
4ae196df AD |
4989 | /* remove vid from vlvf if sr-iov is enabled, |
4990 | * if not in vlvf remove from vfta */ | |
4991 | if (igb_vlvf_set(adapter, vid, false, pf_id)) | |
4992 | igb_vfta_set(hw, vid, false); | |
9d5c8243 AK |
4993 | } |
4994 | ||
4995 | static void igb_restore_vlan(struct igb_adapter *adapter) | |
4996 | { | |
4997 | igb_vlan_rx_register(adapter->netdev, adapter->vlgrp); | |
4998 | ||
4999 | if (adapter->vlgrp) { | |
5000 | u16 vid; | |
5001 | for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) { | |
5002 | if (!vlan_group_get_device(adapter->vlgrp, vid)) | |
5003 | continue; | |
5004 | igb_vlan_rx_add_vid(adapter->netdev, vid); | |
5005 | } | |
5006 | } | |
5007 | } | |
5008 | ||
5009 | int igb_set_spd_dplx(struct igb_adapter *adapter, u16 spddplx) | |
5010 | { | |
5011 | struct e1000_mac_info *mac = &adapter->hw.mac; | |
5012 | ||
5013 | mac->autoneg = 0; | |
5014 | ||
5015 | /* Fiber NICs only allow 1000 gbps Full duplex */ | |
5016 | if ((adapter->hw.phy.media_type == e1000_media_type_fiber) && | |
5017 | spddplx != (SPEED_1000 + DUPLEX_FULL)) { | |
5018 | dev_err(&adapter->pdev->dev, | |
5019 | "Unsupported Speed/Duplex configuration\n"); | |
5020 | return -EINVAL; | |
5021 | } | |
5022 | ||
5023 | switch (spddplx) { | |
5024 | case SPEED_10 + DUPLEX_HALF: | |
5025 | mac->forced_speed_duplex = ADVERTISE_10_HALF; | |
5026 | break; | |
5027 | case SPEED_10 + DUPLEX_FULL: | |
5028 | mac->forced_speed_duplex = ADVERTISE_10_FULL; | |
5029 | break; | |
5030 | case SPEED_100 + DUPLEX_HALF: | |
5031 | mac->forced_speed_duplex = ADVERTISE_100_HALF; | |
5032 | break; | |
5033 | case SPEED_100 + DUPLEX_FULL: | |
5034 | mac->forced_speed_duplex = ADVERTISE_100_FULL; | |
5035 | break; | |
5036 | case SPEED_1000 + DUPLEX_FULL: | |
5037 | mac->autoneg = 1; | |
5038 | adapter->hw.phy.autoneg_advertised = ADVERTISE_1000_FULL; | |
5039 | break; | |
5040 | case SPEED_1000 + DUPLEX_HALF: /* not supported */ | |
5041 | default: | |
5042 | dev_err(&adapter->pdev->dev, | |
5043 | "Unsupported Speed/Duplex configuration\n"); | |
5044 | return -EINVAL; | |
5045 | } | |
5046 | return 0; | |
5047 | } | |
5048 | ||
9d5c8243 AK |
5049 | static int igb_suspend(struct pci_dev *pdev, pm_message_t state) |
5050 | { | |
5051 | struct net_device *netdev = pci_get_drvdata(pdev); | |
5052 | struct igb_adapter *adapter = netdev_priv(netdev); | |
5053 | struct e1000_hw *hw = &adapter->hw; | |
2d064c06 | 5054 | u32 ctrl, rctl, status; |
9d5c8243 AK |
5055 | u32 wufc = adapter->wol; |
5056 | #ifdef CONFIG_PM | |
5057 | int retval = 0; | |
5058 | #endif | |
5059 | ||
5060 | netif_device_detach(netdev); | |
5061 | ||
a88f10ec AD |
5062 | if (netif_running(netdev)) |
5063 | igb_close(netdev); | |
5064 | ||
5065 | igb_reset_interrupt_capability(adapter); | |
5066 | ||
5067 | igb_free_queues(adapter); | |
9d5c8243 AK |
5068 | |
5069 | #ifdef CONFIG_PM | |
5070 | retval = pci_save_state(pdev); | |
5071 | if (retval) | |
5072 | return retval; | |
5073 | #endif | |
5074 | ||
5075 | status = rd32(E1000_STATUS); | |
5076 | if (status & E1000_STATUS_LU) | |
5077 | wufc &= ~E1000_WUFC_LNKC; | |
5078 | ||
5079 | if (wufc) { | |
5080 | igb_setup_rctl(adapter); | |
5081 | igb_set_multi(netdev); | |
5082 | ||
5083 | /* turn on all-multi mode if wake on multicast is enabled */ | |
5084 | if (wufc & E1000_WUFC_MC) { | |
5085 | rctl = rd32(E1000_RCTL); | |
5086 | rctl |= E1000_RCTL_MPE; | |
5087 | wr32(E1000_RCTL, rctl); | |
5088 | } | |
5089 | ||
5090 | ctrl = rd32(E1000_CTRL); | |
5091 | /* advertise wake from D3Cold */ | |
5092 | #define E1000_CTRL_ADVD3WUC 0x00100000 | |
5093 | /* phy power management enable */ | |
5094 | #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000 | |
5095 | ctrl |= E1000_CTRL_ADVD3WUC; | |
5096 | wr32(E1000_CTRL, ctrl); | |
5097 | ||
9d5c8243 AK |
5098 | /* Allow time for pending master requests to run */ |
5099 | igb_disable_pcie_master(&adapter->hw); | |
5100 | ||
5101 | wr32(E1000_WUC, E1000_WUC_PME_EN); | |
5102 | wr32(E1000_WUFC, wufc); | |
9d5c8243 AK |
5103 | } else { |
5104 | wr32(E1000_WUC, 0); | |
5105 | wr32(E1000_WUFC, 0); | |
9d5c8243 AK |
5106 | } |
5107 | ||
2d064c06 AD |
5108 | /* make sure adapter isn't asleep if manageability/wol is enabled */ |
5109 | if (wufc || adapter->en_mng_pt) { | |
9d5c8243 AK |
5110 | pci_enable_wake(pdev, PCI_D3hot, 1); |
5111 | pci_enable_wake(pdev, PCI_D3cold, 1); | |
2d064c06 AD |
5112 | } else { |
5113 | igb_shutdown_fiber_serdes_link_82575(hw); | |
5114 | pci_enable_wake(pdev, PCI_D3hot, 0); | |
5115 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
9d5c8243 AK |
5116 | } |
5117 | ||
5118 | /* Release control of h/w to f/w. If f/w is AMT enabled, this | |
5119 | * would have already happened in close and is redundant. */ | |
5120 | igb_release_hw_control(adapter); | |
5121 | ||
5122 | pci_disable_device(pdev); | |
5123 | ||
5124 | pci_set_power_state(pdev, pci_choose_state(pdev, state)); | |
5125 | ||
5126 | return 0; | |
5127 | } | |
5128 | ||
5129 | #ifdef CONFIG_PM | |
5130 | static int igb_resume(struct pci_dev *pdev) | |
5131 | { | |
5132 | struct net_device *netdev = pci_get_drvdata(pdev); | |
5133 | struct igb_adapter *adapter = netdev_priv(netdev); | |
5134 | struct e1000_hw *hw = &adapter->hw; | |
5135 | u32 err; | |
5136 | ||
5137 | pci_set_power_state(pdev, PCI_D0); | |
5138 | pci_restore_state(pdev); | |
42bfd33a | 5139 | |
aed5dec3 | 5140 | err = pci_enable_device_mem(pdev); |
9d5c8243 AK |
5141 | if (err) { |
5142 | dev_err(&pdev->dev, | |
5143 | "igb: Cannot enable PCI device from suspend\n"); | |
5144 | return err; | |
5145 | } | |
5146 | pci_set_master(pdev); | |
5147 | ||
5148 | pci_enable_wake(pdev, PCI_D3hot, 0); | |
5149 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
5150 | ||
a88f10ec AD |
5151 | igb_set_interrupt_capability(adapter); |
5152 | ||
5153 | if (igb_alloc_queues(adapter)) { | |
5154 | dev_err(&pdev->dev, "Unable to allocate memory for queues\n"); | |
5155 | return -ENOMEM; | |
9d5c8243 AK |
5156 | } |
5157 | ||
5158 | /* e1000_power_up_phy(adapter); */ | |
5159 | ||
5160 | igb_reset(adapter); | |
a8564f03 AD |
5161 | |
5162 | /* let the f/w know that the h/w is now under the control of the | |
5163 | * driver. */ | |
5164 | igb_get_hw_control(adapter); | |
5165 | ||
9d5c8243 AK |
5166 | wr32(E1000_WUS, ~0); |
5167 | ||
a88f10ec AD |
5168 | if (netif_running(netdev)) { |
5169 | err = igb_open(netdev); | |
5170 | if (err) | |
5171 | return err; | |
5172 | } | |
9d5c8243 AK |
5173 | |
5174 | netif_device_attach(netdev); | |
5175 | ||
9d5c8243 AK |
5176 | return 0; |
5177 | } | |
5178 | #endif | |
5179 | ||
5180 | static void igb_shutdown(struct pci_dev *pdev) | |
5181 | { | |
5182 | igb_suspend(pdev, PMSG_SUSPEND); | |
5183 | } | |
5184 | ||
5185 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
5186 | /* | |
5187 | * Polling 'interrupt' - used by things like netconsole to send skbs | |
5188 | * without having to re-enable interrupts. It's not called while | |
5189 | * the interrupt routine is executing. | |
5190 | */ | |
5191 | static void igb_netpoll(struct net_device *netdev) | |
5192 | { | |
5193 | struct igb_adapter *adapter = netdev_priv(netdev); | |
eebbbdba | 5194 | struct e1000_hw *hw = &adapter->hw; |
9d5c8243 | 5195 | int i; |
9d5c8243 | 5196 | |
eebbbdba AD |
5197 | if (!adapter->msix_entries) { |
5198 | igb_irq_disable(adapter); | |
5199 | napi_schedule(&adapter->rx_ring[0].napi); | |
5200 | return; | |
5201 | } | |
9d5c8243 | 5202 | |
eebbbdba AD |
5203 | for (i = 0; i < adapter->num_tx_queues; i++) { |
5204 | struct igb_ring *tx_ring = &adapter->tx_ring[i]; | |
5205 | wr32(E1000_EIMC, tx_ring->eims_value); | |
5206 | igb_clean_tx_irq(tx_ring); | |
5207 | wr32(E1000_EIMS, tx_ring->eims_value); | |
5208 | } | |
9d5c8243 | 5209 | |
eebbbdba AD |
5210 | for (i = 0; i < adapter->num_rx_queues; i++) { |
5211 | struct igb_ring *rx_ring = &adapter->rx_ring[i]; | |
5212 | wr32(E1000_EIMC, rx_ring->eims_value); | |
5213 | napi_schedule(&rx_ring->napi); | |
5214 | } | |
9d5c8243 AK |
5215 | } |
5216 | #endif /* CONFIG_NET_POLL_CONTROLLER */ | |
5217 | ||
5218 | /** | |
5219 | * igb_io_error_detected - called when PCI error is detected | |
5220 | * @pdev: Pointer to PCI device | |
5221 | * @state: The current pci connection state | |
5222 | * | |
5223 | * This function is called after a PCI bus error affecting | |
5224 | * this device has been detected. | |
5225 | */ | |
5226 | static pci_ers_result_t igb_io_error_detected(struct pci_dev *pdev, | |
5227 | pci_channel_state_t state) | |
5228 | { | |
5229 | struct net_device *netdev = pci_get_drvdata(pdev); | |
5230 | struct igb_adapter *adapter = netdev_priv(netdev); | |
5231 | ||
5232 | netif_device_detach(netdev); | |
5233 | ||
5234 | if (netif_running(netdev)) | |
5235 | igb_down(adapter); | |
5236 | pci_disable_device(pdev); | |
5237 | ||
5238 | /* Request a slot slot reset. */ | |
5239 | return PCI_ERS_RESULT_NEED_RESET; | |
5240 | } | |
5241 | ||
5242 | /** | |
5243 | * igb_io_slot_reset - called after the pci bus has been reset. | |
5244 | * @pdev: Pointer to PCI device | |
5245 | * | |
5246 | * Restart the card from scratch, as if from a cold-boot. Implementation | |
5247 | * resembles the first-half of the igb_resume routine. | |
5248 | */ | |
5249 | static pci_ers_result_t igb_io_slot_reset(struct pci_dev *pdev) | |
5250 | { | |
5251 | struct net_device *netdev = pci_get_drvdata(pdev); | |
5252 | struct igb_adapter *adapter = netdev_priv(netdev); | |
5253 | struct e1000_hw *hw = &adapter->hw; | |
40a914fa | 5254 | pci_ers_result_t result; |
42bfd33a | 5255 | int err; |
9d5c8243 | 5256 | |
aed5dec3 | 5257 | if (pci_enable_device_mem(pdev)) { |
9d5c8243 AK |
5258 | dev_err(&pdev->dev, |
5259 | "Cannot re-enable PCI device after reset.\n"); | |
40a914fa AD |
5260 | result = PCI_ERS_RESULT_DISCONNECT; |
5261 | } else { | |
5262 | pci_set_master(pdev); | |
5263 | pci_restore_state(pdev); | |
9d5c8243 | 5264 | |
40a914fa AD |
5265 | pci_enable_wake(pdev, PCI_D3hot, 0); |
5266 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
9d5c8243 | 5267 | |
40a914fa AD |
5268 | igb_reset(adapter); |
5269 | wr32(E1000_WUS, ~0); | |
5270 | result = PCI_ERS_RESULT_RECOVERED; | |
5271 | } | |
9d5c8243 | 5272 | |
ea943d41 JK |
5273 | err = pci_cleanup_aer_uncorrect_error_status(pdev); |
5274 | if (err) { | |
5275 | dev_err(&pdev->dev, "pci_cleanup_aer_uncorrect_error_status " | |
5276 | "failed 0x%0x\n", err); | |
5277 | /* non-fatal, continue */ | |
5278 | } | |
40a914fa AD |
5279 | |
5280 | return result; | |
9d5c8243 AK |
5281 | } |
5282 | ||
5283 | /** | |
5284 | * igb_io_resume - called when traffic can start flowing again. | |
5285 | * @pdev: Pointer to PCI device | |
5286 | * | |
5287 | * This callback is called when the error recovery driver tells us that | |
5288 | * its OK to resume normal operation. Implementation resembles the | |
5289 | * second-half of the igb_resume routine. | |
5290 | */ | |
5291 | static void igb_io_resume(struct pci_dev *pdev) | |
5292 | { | |
5293 | struct net_device *netdev = pci_get_drvdata(pdev); | |
5294 | struct igb_adapter *adapter = netdev_priv(netdev); | |
5295 | ||
9d5c8243 AK |
5296 | if (netif_running(netdev)) { |
5297 | if (igb_up(adapter)) { | |
5298 | dev_err(&pdev->dev, "igb_up failed after reset\n"); | |
5299 | return; | |
5300 | } | |
5301 | } | |
5302 | ||
5303 | netif_device_attach(netdev); | |
5304 | ||
5305 | /* let the f/w know that the h/w is now under the control of the | |
5306 | * driver. */ | |
5307 | igb_get_hw_control(adapter); | |
9d5c8243 AK |
5308 | } |
5309 | ||
e1739522 AD |
5310 | static inline void igb_set_vmolr(struct e1000_hw *hw, int vfn) |
5311 | { | |
5312 | u32 reg_data; | |
5313 | ||
5314 | reg_data = rd32(E1000_VMOLR(vfn)); | |
5315 | reg_data |= E1000_VMOLR_BAM | /* Accept broadcast */ | |
5316 | E1000_VMOLR_ROPE | /* Accept packets matched in UTA */ | |
5317 | E1000_VMOLR_ROMPE | /* Accept packets matched in MTA */ | |
5318 | E1000_VMOLR_AUPE | /* Accept untagged packets */ | |
5319 | E1000_VMOLR_STRVLAN; /* Strip vlan tags */ | |
5320 | wr32(E1000_VMOLR(vfn), reg_data); | |
5321 | } | |
5322 | ||
4ae196df AD |
5323 | static inline int igb_set_vf_rlpml(struct igb_adapter *adapter, int size, |
5324 | int vfn) | |
e1739522 AD |
5325 | { |
5326 | struct e1000_hw *hw = &adapter->hw; | |
5327 | u32 vmolr; | |
5328 | ||
5329 | vmolr = rd32(E1000_VMOLR(vfn)); | |
5330 | vmolr &= ~E1000_VMOLR_RLPML_MASK; | |
5331 | vmolr |= size | E1000_VMOLR_LPE; | |
5332 | wr32(E1000_VMOLR(vfn), vmolr); | |
4ae196df AD |
5333 | |
5334 | return 0; | |
e1739522 AD |
5335 | } |
5336 | ||
5337 | static inline void igb_set_rah_pool(struct e1000_hw *hw, int pool, int entry) | |
5338 | { | |
5339 | u32 reg_data; | |
5340 | ||
5341 | reg_data = rd32(E1000_RAH(entry)); | |
5342 | reg_data &= ~E1000_RAH_POOL_MASK; | |
5343 | reg_data |= E1000_RAH_POOL_1 << pool;; | |
5344 | wr32(E1000_RAH(entry), reg_data); | |
5345 | } | |
5346 | ||
5347 | static void igb_set_mc_list_pools(struct igb_adapter *adapter, | |
5348 | int entry_count, u16 total_rar_filters) | |
5349 | { | |
5350 | struct e1000_hw *hw = &adapter->hw; | |
5351 | int i = adapter->vfs_allocated_count + 1; | |
5352 | ||
5353 | if ((i + entry_count) < total_rar_filters) | |
5354 | total_rar_filters = i + entry_count; | |
5355 | ||
5356 | for (; i < total_rar_filters; i++) | |
5357 | igb_set_rah_pool(hw, adapter->vfs_allocated_count, i); | |
5358 | } | |
5359 | ||
4ae196df AD |
5360 | static int igb_set_vf_mac(struct igb_adapter *adapter, |
5361 | int vf, unsigned char *mac_addr) | |
5362 | { | |
5363 | struct e1000_hw *hw = &adapter->hw; | |
5364 | int rar_entry = vf + 1; /* VF MAC addresses start at entry 1 */ | |
5365 | ||
5366 | igb_rar_set(hw, mac_addr, rar_entry); | |
5367 | ||
37680117 | 5368 | memcpy(adapter->vf_data[vf].vf_mac_addresses, mac_addr, ETH_ALEN); |
4ae196df AD |
5369 | |
5370 | igb_set_rah_pool(hw, vf, rar_entry); | |
5371 | ||
5372 | return 0; | |
5373 | } | |
5374 | ||
5375 | static void igb_vmm_control(struct igb_adapter *adapter) | |
5376 | { | |
5377 | struct e1000_hw *hw = &adapter->hw; | |
5378 | u32 reg_data; | |
5379 | ||
5380 | if (!adapter->vfs_allocated_count) | |
5381 | return; | |
5382 | ||
5383 | /* VF's need PF reset indication before they | |
5384 | * can send/receive mail */ | |
5385 | reg_data = rd32(E1000_CTRL_EXT); | |
5386 | reg_data |= E1000_CTRL_EXT_PFRSTD; | |
5387 | wr32(E1000_CTRL_EXT, reg_data); | |
5388 | ||
5389 | igb_vmdq_set_loopback_pf(hw, true); | |
5390 | igb_vmdq_set_replication_pf(hw, true); | |
5391 | } | |
5392 | ||
37680117 AD |
5393 | #ifdef CONFIG_PCI_IOV |
5394 | static ssize_t igb_show_num_vfs(struct device *dev, | |
5395 | struct device_attribute *attr, char *buf) | |
5396 | { | |
5397 | struct igb_adapter *adapter = netdev_priv(to_net_dev(dev)); | |
5398 | ||
5399 | return sprintf(buf, "%d\n", adapter->vfs_allocated_count); | |
5400 | } | |
5401 | ||
5402 | static ssize_t igb_set_num_vfs(struct device *dev, | |
5403 | struct device_attribute *attr, | |
5404 | const char *buf, size_t count) | |
5405 | { | |
5406 | struct net_device *netdev = to_net_dev(dev); | |
5407 | struct igb_adapter *adapter = netdev_priv(netdev); | |
5408 | struct e1000_hw *hw = &adapter->hw; | |
5409 | struct pci_dev *pdev = adapter->pdev; | |
5410 | unsigned int num_vfs, i; | |
5411 | unsigned char mac_addr[ETH_ALEN]; | |
5412 | int err; | |
5413 | ||
5414 | sscanf(buf, "%u", &num_vfs); | |
5415 | ||
5416 | if (num_vfs > 7) | |
5417 | num_vfs = 7; | |
5418 | ||
5419 | /* value unchanged do nothing */ | |
5420 | if (num_vfs == adapter->vfs_allocated_count) | |
5421 | return count; | |
5422 | ||
5423 | if (netdev->flags & IFF_UP) | |
5424 | igb_close(netdev); | |
5425 | ||
5426 | igb_reset_interrupt_capability(adapter); | |
5427 | igb_free_queues(adapter); | |
5428 | adapter->tx_ring = NULL; | |
5429 | adapter->rx_ring = NULL; | |
5430 | adapter->vfs_allocated_count = 0; | |
5431 | ||
5432 | /* reclaim resources allocated to VFs since we are changing count */ | |
5433 | if (adapter->vf_data) { | |
5434 | /* disable iov and allow time for transactions to clear */ | |
5435 | pci_disable_sriov(pdev); | |
5436 | msleep(500); | |
5437 | ||
5438 | kfree(adapter->vf_data); | |
5439 | adapter->vf_data = NULL; | |
5440 | wr32(E1000_IOVCTL, E1000_IOVCTL_REUSE_VFQ); | |
5441 | msleep(100); | |
5442 | dev_info(&pdev->dev, "IOV Disabled\n"); | |
5443 | } | |
5444 | ||
5445 | if (num_vfs) { | |
5446 | adapter->vf_data = kcalloc(num_vfs, | |
5447 | sizeof(struct vf_data_storage), | |
5448 | GFP_KERNEL); | |
5449 | if (!adapter->vf_data) { | |
5450 | dev_err(&pdev->dev, "Could not allocate VF private " | |
5451 | "data - IOV enable failed\n"); | |
5452 | } else { | |
5453 | err = pci_enable_sriov(pdev, num_vfs); | |
5454 | if (!err) { | |
5455 | adapter->vfs_allocated_count = num_vfs; | |
5456 | dev_info(&pdev->dev, "%d vfs allocated\n", num_vfs); | |
5457 | for (i = 0; i < adapter->vfs_allocated_count; i++) { | |
5458 | random_ether_addr(mac_addr); | |
5459 | igb_set_vf_mac(adapter, i, mac_addr); | |
5460 | } | |
5461 | } else { | |
5462 | kfree(adapter->vf_data); | |
5463 | adapter->vf_data = NULL; | |
5464 | } | |
5465 | } | |
5466 | } | |
5467 | ||
5468 | igb_set_interrupt_capability(adapter); | |
5469 | igb_alloc_queues(adapter); | |
5470 | igb_reset(adapter); | |
5471 | ||
5472 | if (netdev->flags & IFF_UP) | |
5473 | igb_open(netdev); | |
5474 | ||
5475 | return count; | |
5476 | } | |
5477 | #endif /* CONFIG_PCI_IOV */ | |
9d5c8243 | 5478 | /* igb_main.c */ |