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92915f71 GR |
1 | /******************************************************************************* |
2 | ||
3 | Intel 82599 Virtual Function driver | |
4 | Copyright(c) 1999 - 2009 Intel Corporation. | |
5 | ||
6 | This program is free software; you can redistribute it and/or modify it | |
7 | under the terms and conditions of the GNU General Public License, | |
8 | version 2, as published by the Free Software Foundation. | |
9 | ||
10 | This program is distributed in the hope it will be useful, but WITHOUT | |
11 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
12 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
13 | more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License along with | |
16 | this program; if not, write to the Free Software Foundation, Inc., | |
17 | 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. | |
18 | ||
19 | The full GNU General Public License is included in this distribution in | |
20 | the file called "COPYING". | |
21 | ||
22 | Contact Information: | |
23 | e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> | |
24 | Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 | |
25 | ||
26 | *******************************************************************************/ | |
27 | ||
28 | ||
29 | /****************************************************************************** | |
30 | Copyright (c)2006 - 2007 Myricom, Inc. for some LRO specific code | |
31 | ******************************************************************************/ | |
32 | #include <linux/types.h> | |
33 | #include <linux/module.h> | |
34 | #include <linux/pci.h> | |
35 | #include <linux/netdevice.h> | |
36 | #include <linux/vmalloc.h> | |
37 | #include <linux/string.h> | |
38 | #include <linux/in.h> | |
39 | #include <linux/ip.h> | |
40 | #include <linux/tcp.h> | |
41 | #include <linux/ipv6.h> | |
5a0e3ad6 | 42 | #include <linux/slab.h> |
92915f71 GR |
43 | #include <net/checksum.h> |
44 | #include <net/ip6_checksum.h> | |
45 | #include <linux/ethtool.h> | |
46 | #include <linux/if_vlan.h> | |
47 | ||
48 | #include "ixgbevf.h" | |
49 | ||
50 | char ixgbevf_driver_name[] = "ixgbevf"; | |
51 | static const char ixgbevf_driver_string[] = | |
52 | "Intel(R) 82599 Virtual Function"; | |
53 | ||
54 | #define DRV_VERSION "1.0.0-k0" | |
55 | const char ixgbevf_driver_version[] = DRV_VERSION; | |
56 | static char ixgbevf_copyright[] = "Copyright (c) 2009 Intel Corporation."; | |
57 | ||
58 | static const struct ixgbevf_info *ixgbevf_info_tbl[] = { | |
59 | [board_82599_vf] = &ixgbevf_vf_info, | |
60 | }; | |
61 | ||
62 | /* ixgbevf_pci_tbl - PCI Device ID Table | |
63 | * | |
64 | * Wildcard entries (PCI_ANY_ID) should come last | |
65 | * Last entry must be all 0s | |
66 | * | |
67 | * { Vendor ID, Device ID, SubVendor ID, SubDevice ID, | |
68 | * Class, Class Mask, private data (not used) } | |
69 | */ | |
70 | static struct pci_device_id ixgbevf_pci_tbl[] = { | |
71 | {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_VF), | |
72 | board_82599_vf}, | |
73 | ||
74 | /* required last entry */ | |
75 | {0, } | |
76 | }; | |
77 | MODULE_DEVICE_TABLE(pci, ixgbevf_pci_tbl); | |
78 | ||
79 | MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>"); | |
80 | MODULE_DESCRIPTION("Intel(R) 82599 Virtual Function Driver"); | |
81 | MODULE_LICENSE("GPL"); | |
82 | MODULE_VERSION(DRV_VERSION); | |
83 | ||
84 | #define DEFAULT_DEBUG_LEVEL_SHIFT 3 | |
85 | ||
86 | /* forward decls */ | |
87 | static void ixgbevf_set_itr_msix(struct ixgbevf_q_vector *q_vector); | |
88 | static void ixgbevf_write_eitr(struct ixgbevf_adapter *adapter, int v_idx, | |
89 | u32 itr_reg); | |
90 | ||
91 | static inline void ixgbevf_release_rx_desc(struct ixgbe_hw *hw, | |
92 | struct ixgbevf_ring *rx_ring, | |
93 | u32 val) | |
94 | { | |
95 | /* | |
96 | * Force memory writes to complete before letting h/w | |
97 | * know there are new descriptors to fetch. (Only | |
98 | * applicable for weak-ordered memory model archs, | |
99 | * such as IA-64). | |
100 | */ | |
101 | wmb(); | |
102 | IXGBE_WRITE_REG(hw, IXGBE_VFRDT(rx_ring->reg_idx), val); | |
103 | } | |
104 | ||
105 | /* | |
106 | * ixgbe_set_ivar - set the IVAR registers, mapping interrupt causes to vectors | |
107 | * @adapter: pointer to adapter struct | |
108 | * @direction: 0 for Rx, 1 for Tx, -1 for other causes | |
109 | * @queue: queue to map the corresponding interrupt to | |
110 | * @msix_vector: the vector to map to the corresponding queue | |
111 | * | |
112 | */ | |
113 | static void ixgbevf_set_ivar(struct ixgbevf_adapter *adapter, s8 direction, | |
114 | u8 queue, u8 msix_vector) | |
115 | { | |
116 | u32 ivar, index; | |
117 | struct ixgbe_hw *hw = &adapter->hw; | |
118 | if (direction == -1) { | |
119 | /* other causes */ | |
120 | msix_vector |= IXGBE_IVAR_ALLOC_VAL; | |
121 | ivar = IXGBE_READ_REG(hw, IXGBE_VTIVAR_MISC); | |
122 | ivar &= ~0xFF; | |
123 | ivar |= msix_vector; | |
124 | IXGBE_WRITE_REG(hw, IXGBE_VTIVAR_MISC, ivar); | |
125 | } else { | |
126 | /* tx or rx causes */ | |
127 | msix_vector |= IXGBE_IVAR_ALLOC_VAL; | |
128 | index = ((16 * (queue & 1)) + (8 * direction)); | |
129 | ivar = IXGBE_READ_REG(hw, IXGBE_VTIVAR(queue >> 1)); | |
130 | ivar &= ~(0xFF << index); | |
131 | ivar |= (msix_vector << index); | |
132 | IXGBE_WRITE_REG(hw, IXGBE_VTIVAR(queue >> 1), ivar); | |
133 | } | |
134 | } | |
135 | ||
136 | static void ixgbevf_unmap_and_free_tx_resource(struct ixgbevf_adapter *adapter, | |
137 | struct ixgbevf_tx_buffer | |
138 | *tx_buffer_info) | |
139 | { | |
140 | if (tx_buffer_info->dma) { | |
141 | if (tx_buffer_info->mapped_as_page) | |
142 | pci_unmap_page(adapter->pdev, | |
143 | tx_buffer_info->dma, | |
144 | tx_buffer_info->length, | |
145 | PCI_DMA_TODEVICE); | |
146 | else | |
147 | pci_unmap_single(adapter->pdev, | |
148 | tx_buffer_info->dma, | |
149 | tx_buffer_info->length, | |
150 | PCI_DMA_TODEVICE); | |
151 | tx_buffer_info->dma = 0; | |
152 | } | |
153 | if (tx_buffer_info->skb) { | |
154 | dev_kfree_skb_any(tx_buffer_info->skb); | |
155 | tx_buffer_info->skb = NULL; | |
156 | } | |
157 | tx_buffer_info->time_stamp = 0; | |
158 | /* tx_buffer_info must be completely set up in the transmit path */ | |
159 | } | |
160 | ||
161 | static inline bool ixgbevf_check_tx_hang(struct ixgbevf_adapter *adapter, | |
162 | struct ixgbevf_ring *tx_ring, | |
163 | unsigned int eop) | |
164 | { | |
165 | struct ixgbe_hw *hw = &adapter->hw; | |
166 | u32 head, tail; | |
167 | ||
168 | /* Detect a transmit hang in hardware, this serializes the | |
169 | * check with the clearing of time_stamp and movement of eop */ | |
170 | head = readl(hw->hw_addr + tx_ring->head); | |
171 | tail = readl(hw->hw_addr + tx_ring->tail); | |
172 | adapter->detect_tx_hung = false; | |
173 | if ((head != tail) && | |
174 | tx_ring->tx_buffer_info[eop].time_stamp && | |
175 | time_after(jiffies, tx_ring->tx_buffer_info[eop].time_stamp + HZ)) { | |
176 | /* detected Tx unit hang */ | |
177 | union ixgbe_adv_tx_desc *tx_desc; | |
178 | tx_desc = IXGBE_TX_DESC_ADV(*tx_ring, eop); | |
179 | printk(KERN_ERR "Detected Tx Unit Hang\n" | |
180 | " Tx Queue <%d>\n" | |
181 | " TDH, TDT <%x>, <%x>\n" | |
182 | " next_to_use <%x>\n" | |
183 | " next_to_clean <%x>\n" | |
184 | "tx_buffer_info[next_to_clean]\n" | |
185 | " time_stamp <%lx>\n" | |
186 | " jiffies <%lx>\n", | |
187 | tx_ring->queue_index, | |
188 | head, tail, | |
189 | tx_ring->next_to_use, eop, | |
190 | tx_ring->tx_buffer_info[eop].time_stamp, jiffies); | |
191 | return true; | |
192 | } | |
193 | ||
194 | return false; | |
195 | } | |
196 | ||
197 | #define IXGBE_MAX_TXD_PWR 14 | |
198 | #define IXGBE_MAX_DATA_PER_TXD (1 << IXGBE_MAX_TXD_PWR) | |
199 | ||
200 | /* Tx Descriptors needed, worst case */ | |
201 | #define TXD_USE_COUNT(S) (((S) >> IXGBE_MAX_TXD_PWR) + \ | |
202 | (((S) & (IXGBE_MAX_DATA_PER_TXD - 1)) ? 1 : 0)) | |
203 | #ifdef MAX_SKB_FRAGS | |
204 | #define DESC_NEEDED (TXD_USE_COUNT(IXGBE_MAX_DATA_PER_TXD) /* skb->data */ + \ | |
205 | MAX_SKB_FRAGS * TXD_USE_COUNT(PAGE_SIZE) + 1) /* for context */ | |
206 | #else | |
207 | #define DESC_NEEDED TXD_USE_COUNT(IXGBE_MAX_DATA_PER_TXD) | |
208 | #endif | |
209 | ||
210 | static void ixgbevf_tx_timeout(struct net_device *netdev); | |
211 | ||
212 | /** | |
213 | * ixgbevf_clean_tx_irq - Reclaim resources after transmit completes | |
214 | * @adapter: board private structure | |
215 | * @tx_ring: tx ring to clean | |
216 | **/ | |
217 | static bool ixgbevf_clean_tx_irq(struct ixgbevf_adapter *adapter, | |
218 | struct ixgbevf_ring *tx_ring) | |
219 | { | |
220 | struct net_device *netdev = adapter->netdev; | |
221 | struct ixgbe_hw *hw = &adapter->hw; | |
222 | union ixgbe_adv_tx_desc *tx_desc, *eop_desc; | |
223 | struct ixgbevf_tx_buffer *tx_buffer_info; | |
224 | unsigned int i, eop, count = 0; | |
225 | unsigned int total_bytes = 0, total_packets = 0; | |
226 | ||
227 | i = tx_ring->next_to_clean; | |
228 | eop = tx_ring->tx_buffer_info[i].next_to_watch; | |
229 | eop_desc = IXGBE_TX_DESC_ADV(*tx_ring, eop); | |
230 | ||
231 | while ((eop_desc->wb.status & cpu_to_le32(IXGBE_TXD_STAT_DD)) && | |
232 | (count < tx_ring->work_limit)) { | |
233 | bool cleaned = false; | |
234 | for ( ; !cleaned; count++) { | |
235 | struct sk_buff *skb; | |
236 | tx_desc = IXGBE_TX_DESC_ADV(*tx_ring, i); | |
237 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; | |
238 | cleaned = (i == eop); | |
239 | skb = tx_buffer_info->skb; | |
240 | ||
241 | if (cleaned && skb) { | |
242 | unsigned int segs, bytecount; | |
243 | ||
244 | /* gso_segs is currently only valid for tcp */ | |
245 | segs = skb_shinfo(skb)->gso_segs ?: 1; | |
246 | /* multiply data chunks by size of headers */ | |
247 | bytecount = ((segs - 1) * skb_headlen(skb)) + | |
248 | skb->len; | |
249 | total_packets += segs; | |
250 | total_bytes += bytecount; | |
251 | } | |
252 | ||
253 | ixgbevf_unmap_and_free_tx_resource(adapter, | |
254 | tx_buffer_info); | |
255 | ||
256 | tx_desc->wb.status = 0; | |
257 | ||
258 | i++; | |
259 | if (i == tx_ring->count) | |
260 | i = 0; | |
261 | } | |
262 | ||
263 | eop = tx_ring->tx_buffer_info[i].next_to_watch; | |
264 | eop_desc = IXGBE_TX_DESC_ADV(*tx_ring, eop); | |
265 | } | |
266 | ||
267 | tx_ring->next_to_clean = i; | |
268 | ||
269 | #define TX_WAKE_THRESHOLD (DESC_NEEDED * 2) | |
270 | if (unlikely(count && netif_carrier_ok(netdev) && | |
271 | (IXGBE_DESC_UNUSED(tx_ring) >= TX_WAKE_THRESHOLD))) { | |
272 | /* Make sure that anybody stopping the queue after this | |
273 | * sees the new next_to_clean. | |
274 | */ | |
275 | smp_mb(); | |
276 | #ifdef HAVE_TX_MQ | |
277 | if (__netif_subqueue_stopped(netdev, tx_ring->queue_index) && | |
278 | !test_bit(__IXGBEVF_DOWN, &adapter->state)) { | |
279 | netif_wake_subqueue(netdev, tx_ring->queue_index); | |
280 | ++adapter->restart_queue; | |
281 | } | |
282 | #else | |
283 | if (netif_queue_stopped(netdev) && | |
284 | !test_bit(__IXGBEVF_DOWN, &adapter->state)) { | |
285 | netif_wake_queue(netdev); | |
286 | ++adapter->restart_queue; | |
287 | } | |
288 | #endif | |
289 | } | |
290 | ||
291 | if (adapter->detect_tx_hung) { | |
292 | if (ixgbevf_check_tx_hang(adapter, tx_ring, i)) { | |
293 | /* schedule immediate reset if we believe we hung */ | |
294 | printk(KERN_INFO | |
295 | "tx hang %d detected, resetting adapter\n", | |
296 | adapter->tx_timeout_count + 1); | |
297 | ixgbevf_tx_timeout(adapter->netdev); | |
298 | } | |
299 | } | |
300 | ||
301 | /* re-arm the interrupt */ | |
302 | if ((count >= tx_ring->work_limit) && | |
303 | (!test_bit(__IXGBEVF_DOWN, &adapter->state))) { | |
304 | IXGBE_WRITE_REG(hw, IXGBE_VTEICS, tx_ring->v_idx); | |
305 | } | |
306 | ||
307 | tx_ring->total_bytes += total_bytes; | |
308 | tx_ring->total_packets += total_packets; | |
309 | ||
310 | adapter->net_stats.tx_bytes += total_bytes; | |
311 | adapter->net_stats.tx_packets += total_packets; | |
312 | ||
313 | return (count < tx_ring->work_limit); | |
314 | } | |
315 | ||
316 | /** | |
317 | * ixgbevf_receive_skb - Send a completed packet up the stack | |
318 | * @q_vector: structure containing interrupt and ring information | |
319 | * @skb: packet to send up | |
320 | * @status: hardware indication of status of receive | |
321 | * @rx_ring: rx descriptor ring (for a specific queue) to setup | |
322 | * @rx_desc: rx descriptor | |
323 | **/ | |
324 | static void ixgbevf_receive_skb(struct ixgbevf_q_vector *q_vector, | |
325 | struct sk_buff *skb, u8 status, | |
326 | struct ixgbevf_ring *ring, | |
327 | union ixgbe_adv_rx_desc *rx_desc) | |
328 | { | |
329 | struct ixgbevf_adapter *adapter = q_vector->adapter; | |
330 | bool is_vlan = (status & IXGBE_RXD_STAT_VP); | |
331 | u16 tag = le16_to_cpu(rx_desc->wb.upper.vlan); | |
332 | int ret; | |
333 | ||
334 | if (!(adapter->flags & IXGBE_FLAG_IN_NETPOLL)) { | |
335 | if (adapter->vlgrp && is_vlan) | |
336 | vlan_gro_receive(&q_vector->napi, | |
337 | adapter->vlgrp, | |
338 | tag, skb); | |
339 | else | |
340 | napi_gro_receive(&q_vector->napi, skb); | |
341 | } else { | |
342 | if (adapter->vlgrp && is_vlan) | |
343 | ret = vlan_hwaccel_rx(skb, adapter->vlgrp, tag); | |
344 | else | |
345 | ret = netif_rx(skb); | |
346 | } | |
347 | } | |
348 | ||
349 | /** | |
350 | * ixgbevf_rx_checksum - indicate in skb if hw indicated a good cksum | |
351 | * @adapter: address of board private structure | |
352 | * @status_err: hardware indication of status of receive | |
353 | * @skb: skb currently being received and modified | |
354 | **/ | |
355 | static inline void ixgbevf_rx_checksum(struct ixgbevf_adapter *adapter, | |
356 | u32 status_err, struct sk_buff *skb) | |
357 | { | |
358 | skb->ip_summed = CHECKSUM_NONE; | |
359 | ||
360 | /* Rx csum disabled */ | |
361 | if (!(adapter->flags & IXGBE_FLAG_RX_CSUM_ENABLED)) | |
362 | return; | |
363 | ||
364 | /* if IP and error */ | |
365 | if ((status_err & IXGBE_RXD_STAT_IPCS) && | |
366 | (status_err & IXGBE_RXDADV_ERR_IPE)) { | |
367 | adapter->hw_csum_rx_error++; | |
368 | return; | |
369 | } | |
370 | ||
371 | if (!(status_err & IXGBE_RXD_STAT_L4CS)) | |
372 | return; | |
373 | ||
374 | if (status_err & IXGBE_RXDADV_ERR_TCPE) { | |
375 | adapter->hw_csum_rx_error++; | |
376 | return; | |
377 | } | |
378 | ||
379 | /* It must be a TCP or UDP packet with a valid checksum */ | |
380 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
381 | adapter->hw_csum_rx_good++; | |
382 | } | |
383 | ||
384 | /** | |
385 | * ixgbevf_alloc_rx_buffers - Replace used receive buffers; packet split | |
386 | * @adapter: address of board private structure | |
387 | **/ | |
388 | static void ixgbevf_alloc_rx_buffers(struct ixgbevf_adapter *adapter, | |
389 | struct ixgbevf_ring *rx_ring, | |
390 | int cleaned_count) | |
391 | { | |
392 | struct pci_dev *pdev = adapter->pdev; | |
393 | union ixgbe_adv_rx_desc *rx_desc; | |
394 | struct ixgbevf_rx_buffer *bi; | |
395 | struct sk_buff *skb; | |
396 | unsigned int i; | |
397 | unsigned int bufsz = rx_ring->rx_buf_len + NET_IP_ALIGN; | |
398 | ||
399 | i = rx_ring->next_to_use; | |
400 | bi = &rx_ring->rx_buffer_info[i]; | |
401 | ||
402 | while (cleaned_count--) { | |
403 | rx_desc = IXGBE_RX_DESC_ADV(*rx_ring, i); | |
404 | ||
405 | if (!bi->page_dma && | |
406 | (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED)) { | |
407 | if (!bi->page) { | |
408 | bi->page = netdev_alloc_page(adapter->netdev); | |
409 | if (!bi->page) { | |
410 | adapter->alloc_rx_page_failed++; | |
411 | goto no_buffers; | |
412 | } | |
413 | bi->page_offset = 0; | |
414 | } else { | |
415 | /* use a half page if we're re-using */ | |
416 | bi->page_offset ^= (PAGE_SIZE / 2); | |
417 | } | |
418 | ||
419 | bi->page_dma = pci_map_page(pdev, bi->page, | |
420 | bi->page_offset, | |
421 | (PAGE_SIZE / 2), | |
422 | PCI_DMA_FROMDEVICE); | |
423 | } | |
424 | ||
425 | skb = bi->skb; | |
426 | if (!skb) { | |
427 | skb = netdev_alloc_skb(adapter->netdev, | |
428 | bufsz); | |
429 | ||
430 | if (!skb) { | |
431 | adapter->alloc_rx_buff_failed++; | |
432 | goto no_buffers; | |
433 | } | |
434 | ||
435 | /* | |
436 | * Make buffer alignment 2 beyond a 16 byte boundary | |
437 | * this will result in a 16 byte aligned IP header after | |
438 | * the 14 byte MAC header is removed | |
439 | */ | |
440 | skb_reserve(skb, NET_IP_ALIGN); | |
441 | ||
442 | bi->skb = skb; | |
443 | } | |
444 | if (!bi->dma) { | |
445 | bi->dma = pci_map_single(pdev, skb->data, | |
446 | rx_ring->rx_buf_len, | |
447 | PCI_DMA_FROMDEVICE); | |
448 | } | |
449 | /* Refresh the desc even if buffer_addrs didn't change because | |
450 | * each write-back erases this info. */ | |
451 | if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) { | |
452 | rx_desc->read.pkt_addr = cpu_to_le64(bi->page_dma); | |
453 | rx_desc->read.hdr_addr = cpu_to_le64(bi->dma); | |
454 | } else { | |
455 | rx_desc->read.pkt_addr = cpu_to_le64(bi->dma); | |
456 | } | |
457 | ||
458 | i++; | |
459 | if (i == rx_ring->count) | |
460 | i = 0; | |
461 | bi = &rx_ring->rx_buffer_info[i]; | |
462 | } | |
463 | ||
464 | no_buffers: | |
465 | if (rx_ring->next_to_use != i) { | |
466 | rx_ring->next_to_use = i; | |
467 | if (i-- == 0) | |
468 | i = (rx_ring->count - 1); | |
469 | ||
470 | ixgbevf_release_rx_desc(&adapter->hw, rx_ring, i); | |
471 | } | |
472 | } | |
473 | ||
474 | static inline void ixgbevf_irq_enable_queues(struct ixgbevf_adapter *adapter, | |
475 | u64 qmask) | |
476 | { | |
477 | u32 mask; | |
478 | struct ixgbe_hw *hw = &adapter->hw; | |
479 | ||
480 | mask = (qmask & 0xFFFFFFFF); | |
481 | IXGBE_WRITE_REG(hw, IXGBE_VTEIMS, mask); | |
482 | } | |
483 | ||
484 | static inline u16 ixgbevf_get_hdr_info(union ixgbe_adv_rx_desc *rx_desc) | |
485 | { | |
486 | return rx_desc->wb.lower.lo_dword.hs_rss.hdr_info; | |
487 | } | |
488 | ||
489 | static inline u16 ixgbevf_get_pkt_info(union ixgbe_adv_rx_desc *rx_desc) | |
490 | { | |
491 | return rx_desc->wb.lower.lo_dword.hs_rss.pkt_info; | |
492 | } | |
493 | ||
494 | static bool ixgbevf_clean_rx_irq(struct ixgbevf_q_vector *q_vector, | |
495 | struct ixgbevf_ring *rx_ring, | |
496 | int *work_done, int work_to_do) | |
497 | { | |
498 | struct ixgbevf_adapter *adapter = q_vector->adapter; | |
499 | struct pci_dev *pdev = adapter->pdev; | |
500 | union ixgbe_adv_rx_desc *rx_desc, *next_rxd; | |
501 | struct ixgbevf_rx_buffer *rx_buffer_info, *next_buffer; | |
502 | struct sk_buff *skb; | |
503 | unsigned int i; | |
504 | u32 len, staterr; | |
505 | u16 hdr_info; | |
506 | bool cleaned = false; | |
507 | int cleaned_count = 0; | |
508 | unsigned int total_rx_bytes = 0, total_rx_packets = 0; | |
509 | ||
510 | i = rx_ring->next_to_clean; | |
511 | rx_desc = IXGBE_RX_DESC_ADV(*rx_ring, i); | |
512 | staterr = le32_to_cpu(rx_desc->wb.upper.status_error); | |
513 | rx_buffer_info = &rx_ring->rx_buffer_info[i]; | |
514 | ||
515 | while (staterr & IXGBE_RXD_STAT_DD) { | |
516 | u32 upper_len = 0; | |
517 | if (*work_done >= work_to_do) | |
518 | break; | |
519 | (*work_done)++; | |
520 | ||
521 | if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) { | |
522 | hdr_info = le16_to_cpu(ixgbevf_get_hdr_info(rx_desc)); | |
523 | len = (hdr_info & IXGBE_RXDADV_HDRBUFLEN_MASK) >> | |
524 | IXGBE_RXDADV_HDRBUFLEN_SHIFT; | |
525 | if (hdr_info & IXGBE_RXDADV_SPH) | |
526 | adapter->rx_hdr_split++; | |
527 | if (len > IXGBEVF_RX_HDR_SIZE) | |
528 | len = IXGBEVF_RX_HDR_SIZE; | |
529 | upper_len = le16_to_cpu(rx_desc->wb.upper.length); | |
530 | } else { | |
531 | len = le16_to_cpu(rx_desc->wb.upper.length); | |
532 | } | |
533 | cleaned = true; | |
534 | skb = rx_buffer_info->skb; | |
535 | prefetch(skb->data - NET_IP_ALIGN); | |
536 | rx_buffer_info->skb = NULL; | |
537 | ||
538 | if (rx_buffer_info->dma) { | |
539 | pci_unmap_single(pdev, rx_buffer_info->dma, | |
540 | rx_ring->rx_buf_len, | |
541 | PCI_DMA_FROMDEVICE); | |
542 | rx_buffer_info->dma = 0; | |
543 | skb_put(skb, len); | |
544 | } | |
545 | ||
546 | if (upper_len) { | |
547 | pci_unmap_page(pdev, rx_buffer_info->page_dma, | |
548 | PAGE_SIZE / 2, PCI_DMA_FROMDEVICE); | |
549 | rx_buffer_info->page_dma = 0; | |
550 | skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags, | |
551 | rx_buffer_info->page, | |
552 | rx_buffer_info->page_offset, | |
553 | upper_len); | |
554 | ||
555 | if ((rx_ring->rx_buf_len > (PAGE_SIZE / 2)) || | |
556 | (page_count(rx_buffer_info->page) != 1)) | |
557 | rx_buffer_info->page = NULL; | |
558 | else | |
559 | get_page(rx_buffer_info->page); | |
560 | ||
561 | skb->len += upper_len; | |
562 | skb->data_len += upper_len; | |
563 | skb->truesize += upper_len; | |
564 | } | |
565 | ||
566 | i++; | |
567 | if (i == rx_ring->count) | |
568 | i = 0; | |
569 | ||
570 | next_rxd = IXGBE_RX_DESC_ADV(*rx_ring, i); | |
571 | prefetch(next_rxd); | |
572 | cleaned_count++; | |
573 | ||
574 | next_buffer = &rx_ring->rx_buffer_info[i]; | |
575 | ||
576 | if (!(staterr & IXGBE_RXD_STAT_EOP)) { | |
577 | if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) { | |
578 | rx_buffer_info->skb = next_buffer->skb; | |
579 | rx_buffer_info->dma = next_buffer->dma; | |
580 | next_buffer->skb = skb; | |
581 | next_buffer->dma = 0; | |
582 | } else { | |
583 | skb->next = next_buffer->skb; | |
584 | skb->next->prev = skb; | |
585 | } | |
586 | adapter->non_eop_descs++; | |
587 | goto next_desc; | |
588 | } | |
589 | ||
590 | /* ERR_MASK will only have valid bits if EOP set */ | |
591 | if (unlikely(staterr & IXGBE_RXDADV_ERR_FRAME_ERR_MASK)) { | |
592 | dev_kfree_skb_irq(skb); | |
593 | goto next_desc; | |
594 | } | |
595 | ||
596 | ixgbevf_rx_checksum(adapter, staterr, skb); | |
597 | ||
598 | /* probably a little skewed due to removing CRC */ | |
599 | total_rx_bytes += skb->len; | |
600 | total_rx_packets++; | |
601 | ||
602 | /* | |
603 | * Work around issue of some types of VM to VM loop back | |
604 | * packets not getting split correctly | |
605 | */ | |
606 | if (staterr & IXGBE_RXD_STAT_LB) { | |
607 | u32 header_fixup_len = skb->len - skb->data_len; | |
608 | if (header_fixup_len < 14) | |
609 | skb_push(skb, header_fixup_len); | |
610 | } | |
611 | skb->protocol = eth_type_trans(skb, adapter->netdev); | |
612 | ||
613 | ixgbevf_receive_skb(q_vector, skb, staterr, rx_ring, rx_desc); | |
614 | adapter->netdev->last_rx = jiffies; | |
615 | ||
616 | next_desc: | |
617 | rx_desc->wb.upper.status_error = 0; | |
618 | ||
619 | /* return some buffers to hardware, one at a time is too slow */ | |
620 | if (cleaned_count >= IXGBEVF_RX_BUFFER_WRITE) { | |
621 | ixgbevf_alloc_rx_buffers(adapter, rx_ring, | |
622 | cleaned_count); | |
623 | cleaned_count = 0; | |
624 | } | |
625 | ||
626 | /* use prefetched values */ | |
627 | rx_desc = next_rxd; | |
628 | rx_buffer_info = &rx_ring->rx_buffer_info[i]; | |
629 | ||
630 | staterr = le32_to_cpu(rx_desc->wb.upper.status_error); | |
631 | } | |
632 | ||
633 | rx_ring->next_to_clean = i; | |
634 | cleaned_count = IXGBE_DESC_UNUSED(rx_ring); | |
635 | ||
636 | if (cleaned_count) | |
637 | ixgbevf_alloc_rx_buffers(adapter, rx_ring, cleaned_count); | |
638 | ||
639 | rx_ring->total_packets += total_rx_packets; | |
640 | rx_ring->total_bytes += total_rx_bytes; | |
641 | adapter->net_stats.rx_bytes += total_rx_bytes; | |
642 | adapter->net_stats.rx_packets += total_rx_packets; | |
643 | ||
644 | return cleaned; | |
645 | } | |
646 | ||
647 | /** | |
648 | * ixgbevf_clean_rxonly - msix (aka one shot) rx clean routine | |
649 | * @napi: napi struct with our devices info in it | |
650 | * @budget: amount of work driver is allowed to do this pass, in packets | |
651 | * | |
652 | * This function is optimized for cleaning one queue only on a single | |
653 | * q_vector!!! | |
654 | **/ | |
655 | static int ixgbevf_clean_rxonly(struct napi_struct *napi, int budget) | |
656 | { | |
657 | struct ixgbevf_q_vector *q_vector = | |
658 | container_of(napi, struct ixgbevf_q_vector, napi); | |
659 | struct ixgbevf_adapter *adapter = q_vector->adapter; | |
660 | struct ixgbevf_ring *rx_ring = NULL; | |
661 | int work_done = 0; | |
662 | long r_idx; | |
663 | ||
664 | r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues); | |
665 | rx_ring = &(adapter->rx_ring[r_idx]); | |
666 | ||
667 | ixgbevf_clean_rx_irq(q_vector, rx_ring, &work_done, budget); | |
668 | ||
669 | /* If all Rx work done, exit the polling mode */ | |
670 | if (work_done < budget) { | |
671 | napi_complete(napi); | |
672 | if (adapter->itr_setting & 1) | |
673 | ixgbevf_set_itr_msix(q_vector); | |
674 | if (!test_bit(__IXGBEVF_DOWN, &adapter->state)) | |
675 | ixgbevf_irq_enable_queues(adapter, rx_ring->v_idx); | |
676 | } | |
677 | ||
678 | return work_done; | |
679 | } | |
680 | ||
681 | /** | |
682 | * ixgbevf_clean_rxonly_many - msix (aka one shot) rx clean routine | |
683 | * @napi: napi struct with our devices info in it | |
684 | * @budget: amount of work driver is allowed to do this pass, in packets | |
685 | * | |
686 | * This function will clean more than one rx queue associated with a | |
687 | * q_vector. | |
688 | **/ | |
689 | static int ixgbevf_clean_rxonly_many(struct napi_struct *napi, int budget) | |
690 | { | |
691 | struct ixgbevf_q_vector *q_vector = | |
692 | container_of(napi, struct ixgbevf_q_vector, napi); | |
693 | struct ixgbevf_adapter *adapter = q_vector->adapter; | |
694 | struct ixgbevf_ring *rx_ring = NULL; | |
695 | int work_done = 0, i; | |
696 | long r_idx; | |
697 | u64 enable_mask = 0; | |
698 | ||
699 | /* attempt to distribute budget to each queue fairly, but don't allow | |
700 | * the budget to go below 1 because we'll exit polling */ | |
701 | budget /= (q_vector->rxr_count ?: 1); | |
702 | budget = max(budget, 1); | |
703 | r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues); | |
704 | for (i = 0; i < q_vector->rxr_count; i++) { | |
705 | rx_ring = &(adapter->rx_ring[r_idx]); | |
706 | ixgbevf_clean_rx_irq(q_vector, rx_ring, &work_done, budget); | |
707 | enable_mask |= rx_ring->v_idx; | |
708 | r_idx = find_next_bit(q_vector->rxr_idx, adapter->num_rx_queues, | |
709 | r_idx + 1); | |
710 | } | |
711 | ||
712 | #ifndef HAVE_NETDEV_NAPI_LIST | |
713 | if (!netif_running(adapter->netdev)) | |
714 | work_done = 0; | |
715 | ||
716 | #endif | |
717 | r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues); | |
718 | rx_ring = &(adapter->rx_ring[r_idx]); | |
719 | ||
720 | /* If all Rx work done, exit the polling mode */ | |
721 | if (work_done < budget) { | |
722 | napi_complete(napi); | |
723 | if (adapter->itr_setting & 1) | |
724 | ixgbevf_set_itr_msix(q_vector); | |
725 | if (!test_bit(__IXGBEVF_DOWN, &adapter->state)) | |
726 | ixgbevf_irq_enable_queues(adapter, enable_mask); | |
727 | } | |
728 | ||
729 | return work_done; | |
730 | } | |
731 | ||
732 | ||
733 | /** | |
734 | * ixgbevf_configure_msix - Configure MSI-X hardware | |
735 | * @adapter: board private structure | |
736 | * | |
737 | * ixgbevf_configure_msix sets up the hardware to properly generate MSI-X | |
738 | * interrupts. | |
739 | **/ | |
740 | static void ixgbevf_configure_msix(struct ixgbevf_adapter *adapter) | |
741 | { | |
742 | struct ixgbevf_q_vector *q_vector; | |
743 | struct ixgbe_hw *hw = &adapter->hw; | |
744 | int i, j, q_vectors, v_idx, r_idx; | |
745 | u32 mask; | |
746 | ||
747 | q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS; | |
748 | ||
749 | /* | |
750 | * Populate the IVAR table and set the ITR values to the | |
751 | * corresponding register. | |
752 | */ | |
753 | for (v_idx = 0; v_idx < q_vectors; v_idx++) { | |
754 | q_vector = adapter->q_vector[v_idx]; | |
984b3f57 | 755 | /* XXX for_each_set_bit(...) */ |
92915f71 GR |
756 | r_idx = find_first_bit(q_vector->rxr_idx, |
757 | adapter->num_rx_queues); | |
758 | ||
759 | for (i = 0; i < q_vector->rxr_count; i++) { | |
760 | j = adapter->rx_ring[r_idx].reg_idx; | |
761 | ixgbevf_set_ivar(adapter, 0, j, v_idx); | |
762 | r_idx = find_next_bit(q_vector->rxr_idx, | |
763 | adapter->num_rx_queues, | |
764 | r_idx + 1); | |
765 | } | |
766 | r_idx = find_first_bit(q_vector->txr_idx, | |
767 | adapter->num_tx_queues); | |
768 | ||
769 | for (i = 0; i < q_vector->txr_count; i++) { | |
770 | j = adapter->tx_ring[r_idx].reg_idx; | |
771 | ixgbevf_set_ivar(adapter, 1, j, v_idx); | |
772 | r_idx = find_next_bit(q_vector->txr_idx, | |
773 | adapter->num_tx_queues, | |
774 | r_idx + 1); | |
775 | } | |
776 | ||
777 | /* if this is a tx only vector halve the interrupt rate */ | |
778 | if (q_vector->txr_count && !q_vector->rxr_count) | |
779 | q_vector->eitr = (adapter->eitr_param >> 1); | |
780 | else if (q_vector->rxr_count) | |
781 | /* rx only */ | |
782 | q_vector->eitr = adapter->eitr_param; | |
783 | ||
784 | ixgbevf_write_eitr(adapter, v_idx, q_vector->eitr); | |
785 | } | |
786 | ||
787 | ixgbevf_set_ivar(adapter, -1, 1, v_idx); | |
788 | ||
789 | /* set up to autoclear timer, and the vectors */ | |
790 | mask = IXGBE_EIMS_ENABLE_MASK; | |
791 | mask &= ~IXGBE_EIMS_OTHER; | |
792 | IXGBE_WRITE_REG(hw, IXGBE_VTEIAC, mask); | |
793 | } | |
794 | ||
795 | enum latency_range { | |
796 | lowest_latency = 0, | |
797 | low_latency = 1, | |
798 | bulk_latency = 2, | |
799 | latency_invalid = 255 | |
800 | }; | |
801 | ||
802 | /** | |
803 | * ixgbevf_update_itr - update the dynamic ITR value based on statistics | |
804 | * @adapter: pointer to adapter | |
805 | * @eitr: eitr setting (ints per sec) to give last timeslice | |
806 | * @itr_setting: current throttle rate in ints/second | |
807 | * @packets: the number of packets during this measurement interval | |
808 | * @bytes: the number of bytes during this measurement interval | |
809 | * | |
810 | * Stores a new ITR value based on packets and byte | |
811 | * counts during the last interrupt. The advantage of per interrupt | |
812 | * computation is faster updates and more accurate ITR for the current | |
813 | * traffic pattern. Constants in this function were computed | |
814 | * based on theoretical maximum wire speed and thresholds were set based | |
815 | * on testing data as well as attempting to minimize response time | |
816 | * while increasing bulk throughput. | |
817 | **/ | |
818 | static u8 ixgbevf_update_itr(struct ixgbevf_adapter *adapter, | |
819 | u32 eitr, u8 itr_setting, | |
820 | int packets, int bytes) | |
821 | { | |
822 | unsigned int retval = itr_setting; | |
823 | u32 timepassed_us; | |
824 | u64 bytes_perint; | |
825 | ||
826 | if (packets == 0) | |
827 | goto update_itr_done; | |
828 | ||
829 | ||
830 | /* simple throttlerate management | |
831 | * 0-20MB/s lowest (100000 ints/s) | |
832 | * 20-100MB/s low (20000 ints/s) | |
833 | * 100-1249MB/s bulk (8000 ints/s) | |
834 | */ | |
835 | /* what was last interrupt timeslice? */ | |
836 | timepassed_us = 1000000/eitr; | |
837 | bytes_perint = bytes / timepassed_us; /* bytes/usec */ | |
838 | ||
839 | switch (itr_setting) { | |
840 | case lowest_latency: | |
841 | if (bytes_perint > adapter->eitr_low) | |
842 | retval = low_latency; | |
843 | break; | |
844 | case low_latency: | |
845 | if (bytes_perint > adapter->eitr_high) | |
846 | retval = bulk_latency; | |
847 | else if (bytes_perint <= adapter->eitr_low) | |
848 | retval = lowest_latency; | |
849 | break; | |
850 | case bulk_latency: | |
851 | if (bytes_perint <= adapter->eitr_high) | |
852 | retval = low_latency; | |
853 | break; | |
854 | } | |
855 | ||
856 | update_itr_done: | |
857 | return retval; | |
858 | } | |
859 | ||
860 | /** | |
861 | * ixgbevf_write_eitr - write VTEITR register in hardware specific way | |
862 | * @adapter: pointer to adapter struct | |
863 | * @v_idx: vector index into q_vector array | |
864 | * @itr_reg: new value to be written in *register* format, not ints/s | |
865 | * | |
866 | * This function is made to be called by ethtool and by the driver | |
867 | * when it needs to update VTEITR registers at runtime. Hardware | |
868 | * specific quirks/differences are taken care of here. | |
869 | */ | |
870 | static void ixgbevf_write_eitr(struct ixgbevf_adapter *adapter, int v_idx, | |
871 | u32 itr_reg) | |
872 | { | |
873 | struct ixgbe_hw *hw = &adapter->hw; | |
874 | ||
875 | itr_reg = EITR_INTS_PER_SEC_TO_REG(itr_reg); | |
876 | ||
877 | /* | |
878 | * set the WDIS bit to not clear the timer bits and cause an | |
879 | * immediate assertion of the interrupt | |
880 | */ | |
881 | itr_reg |= IXGBE_EITR_CNT_WDIS; | |
882 | ||
883 | IXGBE_WRITE_REG(hw, IXGBE_VTEITR(v_idx), itr_reg); | |
884 | } | |
885 | ||
886 | static void ixgbevf_set_itr_msix(struct ixgbevf_q_vector *q_vector) | |
887 | { | |
888 | struct ixgbevf_adapter *adapter = q_vector->adapter; | |
889 | u32 new_itr; | |
890 | u8 current_itr, ret_itr; | |
891 | int i, r_idx, v_idx = q_vector->v_idx; | |
892 | struct ixgbevf_ring *rx_ring, *tx_ring; | |
893 | ||
894 | r_idx = find_first_bit(q_vector->txr_idx, adapter->num_tx_queues); | |
895 | for (i = 0; i < q_vector->txr_count; i++) { | |
896 | tx_ring = &(adapter->tx_ring[r_idx]); | |
897 | ret_itr = ixgbevf_update_itr(adapter, q_vector->eitr, | |
898 | q_vector->tx_itr, | |
899 | tx_ring->total_packets, | |
900 | tx_ring->total_bytes); | |
901 | /* if the result for this queue would decrease interrupt | |
902 | * rate for this vector then use that result */ | |
903 | q_vector->tx_itr = ((q_vector->tx_itr > ret_itr) ? | |
904 | q_vector->tx_itr - 1 : ret_itr); | |
905 | r_idx = find_next_bit(q_vector->txr_idx, adapter->num_tx_queues, | |
906 | r_idx + 1); | |
907 | } | |
908 | ||
909 | r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues); | |
910 | for (i = 0; i < q_vector->rxr_count; i++) { | |
911 | rx_ring = &(adapter->rx_ring[r_idx]); | |
912 | ret_itr = ixgbevf_update_itr(adapter, q_vector->eitr, | |
913 | q_vector->rx_itr, | |
914 | rx_ring->total_packets, | |
915 | rx_ring->total_bytes); | |
916 | /* if the result for this queue would decrease interrupt | |
917 | * rate for this vector then use that result */ | |
918 | q_vector->rx_itr = ((q_vector->rx_itr > ret_itr) ? | |
919 | q_vector->rx_itr - 1 : ret_itr); | |
920 | r_idx = find_next_bit(q_vector->rxr_idx, adapter->num_rx_queues, | |
921 | r_idx + 1); | |
922 | } | |
923 | ||
924 | current_itr = max(q_vector->rx_itr, q_vector->tx_itr); | |
925 | ||
926 | switch (current_itr) { | |
927 | /* counts and packets in update_itr are dependent on these numbers */ | |
928 | case lowest_latency: | |
929 | new_itr = 100000; | |
930 | break; | |
931 | case low_latency: | |
932 | new_itr = 20000; /* aka hwitr = ~200 */ | |
933 | break; | |
934 | case bulk_latency: | |
935 | default: | |
936 | new_itr = 8000; | |
937 | break; | |
938 | } | |
939 | ||
940 | if (new_itr != q_vector->eitr) { | |
941 | u32 itr_reg; | |
942 | ||
943 | /* save the algorithm value here, not the smoothed one */ | |
944 | q_vector->eitr = new_itr; | |
945 | /* do an exponential smoothing */ | |
946 | new_itr = ((q_vector->eitr * 90)/100) + ((new_itr * 10)/100); | |
947 | itr_reg = EITR_INTS_PER_SEC_TO_REG(new_itr); | |
948 | ixgbevf_write_eitr(adapter, v_idx, itr_reg); | |
949 | } | |
950 | ||
951 | return; | |
952 | } | |
953 | ||
954 | static irqreturn_t ixgbevf_msix_mbx(int irq, void *data) | |
955 | { | |
956 | struct net_device *netdev = data; | |
957 | struct ixgbevf_adapter *adapter = netdev_priv(netdev); | |
958 | struct ixgbe_hw *hw = &adapter->hw; | |
959 | u32 eicr; | |
a9ee25a2 | 960 | u32 msg; |
92915f71 GR |
961 | |
962 | eicr = IXGBE_READ_REG(hw, IXGBE_VTEICS); | |
963 | IXGBE_WRITE_REG(hw, IXGBE_VTEICR, eicr); | |
964 | ||
a9ee25a2 GR |
965 | hw->mbx.ops.read(hw, &msg, 1); |
966 | ||
967 | if ((msg & IXGBE_MBVFICR_VFREQ_MASK) == IXGBE_PF_CONTROL_MSG) | |
968 | mod_timer(&adapter->watchdog_timer, | |
4c3a8223 | 969 | round_jiffies(jiffies + 1)); |
a9ee25a2 | 970 | |
92915f71 GR |
971 | return IRQ_HANDLED; |
972 | } | |
973 | ||
974 | static irqreturn_t ixgbevf_msix_clean_tx(int irq, void *data) | |
975 | { | |
976 | struct ixgbevf_q_vector *q_vector = data; | |
977 | struct ixgbevf_adapter *adapter = q_vector->adapter; | |
978 | struct ixgbevf_ring *tx_ring; | |
979 | int i, r_idx; | |
980 | ||
981 | if (!q_vector->txr_count) | |
982 | return IRQ_HANDLED; | |
983 | ||
984 | r_idx = find_first_bit(q_vector->txr_idx, adapter->num_tx_queues); | |
985 | for (i = 0; i < q_vector->txr_count; i++) { | |
986 | tx_ring = &(adapter->tx_ring[r_idx]); | |
987 | tx_ring->total_bytes = 0; | |
988 | tx_ring->total_packets = 0; | |
989 | ixgbevf_clean_tx_irq(adapter, tx_ring); | |
990 | r_idx = find_next_bit(q_vector->txr_idx, adapter->num_tx_queues, | |
991 | r_idx + 1); | |
992 | } | |
993 | ||
994 | if (adapter->itr_setting & 1) | |
995 | ixgbevf_set_itr_msix(q_vector); | |
996 | ||
997 | return IRQ_HANDLED; | |
998 | } | |
999 | ||
1000 | /** | |
1001 | * ixgbe_msix_clean_rx - single unshared vector rx clean (all queues) | |
1002 | * @irq: unused | |
1003 | * @data: pointer to our q_vector struct for this interrupt vector | |
1004 | **/ | |
1005 | static irqreturn_t ixgbevf_msix_clean_rx(int irq, void *data) | |
1006 | { | |
1007 | struct ixgbevf_q_vector *q_vector = data; | |
1008 | struct ixgbevf_adapter *adapter = q_vector->adapter; | |
1009 | struct ixgbe_hw *hw = &adapter->hw; | |
1010 | struct ixgbevf_ring *rx_ring; | |
1011 | int r_idx; | |
1012 | int i; | |
1013 | ||
1014 | r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues); | |
1015 | for (i = 0; i < q_vector->rxr_count; i++) { | |
1016 | rx_ring = &(adapter->rx_ring[r_idx]); | |
1017 | rx_ring->total_bytes = 0; | |
1018 | rx_ring->total_packets = 0; | |
1019 | r_idx = find_next_bit(q_vector->rxr_idx, adapter->num_rx_queues, | |
1020 | r_idx + 1); | |
1021 | } | |
1022 | ||
1023 | if (!q_vector->rxr_count) | |
1024 | return IRQ_HANDLED; | |
1025 | ||
1026 | r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues); | |
1027 | rx_ring = &(adapter->rx_ring[r_idx]); | |
1028 | /* disable interrupts on this vector only */ | |
1029 | IXGBE_WRITE_REG(hw, IXGBE_VTEIMC, rx_ring->v_idx); | |
1030 | napi_schedule(&q_vector->napi); | |
1031 | ||
1032 | ||
1033 | return IRQ_HANDLED; | |
1034 | } | |
1035 | ||
1036 | static irqreturn_t ixgbevf_msix_clean_many(int irq, void *data) | |
1037 | { | |
1038 | ixgbevf_msix_clean_rx(irq, data); | |
1039 | ixgbevf_msix_clean_tx(irq, data); | |
1040 | ||
1041 | return IRQ_HANDLED; | |
1042 | } | |
1043 | ||
1044 | static inline void map_vector_to_rxq(struct ixgbevf_adapter *a, int v_idx, | |
1045 | int r_idx) | |
1046 | { | |
1047 | struct ixgbevf_q_vector *q_vector = a->q_vector[v_idx]; | |
1048 | ||
1049 | set_bit(r_idx, q_vector->rxr_idx); | |
1050 | q_vector->rxr_count++; | |
1051 | a->rx_ring[r_idx].v_idx = 1 << v_idx; | |
1052 | } | |
1053 | ||
1054 | static inline void map_vector_to_txq(struct ixgbevf_adapter *a, int v_idx, | |
1055 | int t_idx) | |
1056 | { | |
1057 | struct ixgbevf_q_vector *q_vector = a->q_vector[v_idx]; | |
1058 | ||
1059 | set_bit(t_idx, q_vector->txr_idx); | |
1060 | q_vector->txr_count++; | |
1061 | a->tx_ring[t_idx].v_idx = 1 << v_idx; | |
1062 | } | |
1063 | ||
1064 | /** | |
1065 | * ixgbevf_map_rings_to_vectors - Maps descriptor rings to vectors | |
1066 | * @adapter: board private structure to initialize | |
1067 | * | |
1068 | * This function maps descriptor rings to the queue-specific vectors | |
1069 | * we were allotted through the MSI-X enabling code. Ideally, we'd have | |
1070 | * one vector per ring/queue, but on a constrained vector budget, we | |
1071 | * group the rings as "efficiently" as possible. You would add new | |
1072 | * mapping configurations in here. | |
1073 | **/ | |
1074 | static int ixgbevf_map_rings_to_vectors(struct ixgbevf_adapter *adapter) | |
1075 | { | |
1076 | int q_vectors; | |
1077 | int v_start = 0; | |
1078 | int rxr_idx = 0, txr_idx = 0; | |
1079 | int rxr_remaining = adapter->num_rx_queues; | |
1080 | int txr_remaining = adapter->num_tx_queues; | |
1081 | int i, j; | |
1082 | int rqpv, tqpv; | |
1083 | int err = 0; | |
1084 | ||
1085 | q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS; | |
1086 | ||
1087 | /* | |
1088 | * The ideal configuration... | |
1089 | * We have enough vectors to map one per queue. | |
1090 | */ | |
1091 | if (q_vectors == adapter->num_rx_queues + adapter->num_tx_queues) { | |
1092 | for (; rxr_idx < rxr_remaining; v_start++, rxr_idx++) | |
1093 | map_vector_to_rxq(adapter, v_start, rxr_idx); | |
1094 | ||
1095 | for (; txr_idx < txr_remaining; v_start++, txr_idx++) | |
1096 | map_vector_to_txq(adapter, v_start, txr_idx); | |
1097 | goto out; | |
1098 | } | |
1099 | ||
1100 | /* | |
1101 | * If we don't have enough vectors for a 1-to-1 | |
1102 | * mapping, we'll have to group them so there are | |
1103 | * multiple queues per vector. | |
1104 | */ | |
1105 | /* Re-adjusting *qpv takes care of the remainder. */ | |
1106 | for (i = v_start; i < q_vectors; i++) { | |
1107 | rqpv = DIV_ROUND_UP(rxr_remaining, q_vectors - i); | |
1108 | for (j = 0; j < rqpv; j++) { | |
1109 | map_vector_to_rxq(adapter, i, rxr_idx); | |
1110 | rxr_idx++; | |
1111 | rxr_remaining--; | |
1112 | } | |
1113 | } | |
1114 | for (i = v_start; i < q_vectors; i++) { | |
1115 | tqpv = DIV_ROUND_UP(txr_remaining, q_vectors - i); | |
1116 | for (j = 0; j < tqpv; j++) { | |
1117 | map_vector_to_txq(adapter, i, txr_idx); | |
1118 | txr_idx++; | |
1119 | txr_remaining--; | |
1120 | } | |
1121 | } | |
1122 | ||
1123 | out: | |
1124 | return err; | |
1125 | } | |
1126 | ||
1127 | /** | |
1128 | * ixgbevf_request_msix_irqs - Initialize MSI-X interrupts | |
1129 | * @adapter: board private structure | |
1130 | * | |
1131 | * ixgbevf_request_msix_irqs allocates MSI-X vectors and requests | |
1132 | * interrupts from the kernel. | |
1133 | **/ | |
1134 | static int ixgbevf_request_msix_irqs(struct ixgbevf_adapter *adapter) | |
1135 | { | |
1136 | struct net_device *netdev = adapter->netdev; | |
1137 | irqreturn_t (*handler)(int, void *); | |
1138 | int i, vector, q_vectors, err; | |
1139 | int ri = 0, ti = 0; | |
1140 | ||
1141 | /* Decrement for Other and TCP Timer vectors */ | |
1142 | q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS; | |
1143 | ||
1144 | #define SET_HANDLER(_v) (((_v)->rxr_count && (_v)->txr_count) \ | |
1145 | ? &ixgbevf_msix_clean_many : \ | |
1146 | (_v)->rxr_count ? &ixgbevf_msix_clean_rx : \ | |
1147 | (_v)->txr_count ? &ixgbevf_msix_clean_tx : \ | |
1148 | NULL) | |
1149 | for (vector = 0; vector < q_vectors; vector++) { | |
1150 | handler = SET_HANDLER(adapter->q_vector[vector]); | |
1151 | ||
1152 | if (handler == &ixgbevf_msix_clean_rx) { | |
1153 | sprintf(adapter->name[vector], "%s-%s-%d", | |
1154 | netdev->name, "rx", ri++); | |
1155 | } else if (handler == &ixgbevf_msix_clean_tx) { | |
1156 | sprintf(adapter->name[vector], "%s-%s-%d", | |
1157 | netdev->name, "tx", ti++); | |
1158 | } else if (handler == &ixgbevf_msix_clean_many) { | |
1159 | sprintf(adapter->name[vector], "%s-%s-%d", | |
1160 | netdev->name, "TxRx", vector); | |
1161 | } else { | |
1162 | /* skip this unused q_vector */ | |
1163 | continue; | |
1164 | } | |
1165 | err = request_irq(adapter->msix_entries[vector].vector, | |
1166 | handler, 0, adapter->name[vector], | |
1167 | adapter->q_vector[vector]); | |
1168 | if (err) { | |
1169 | hw_dbg(&adapter->hw, | |
1170 | "request_irq failed for MSIX interrupt " | |
1171 | "Error: %d\n", err); | |
1172 | goto free_queue_irqs; | |
1173 | } | |
1174 | } | |
1175 | ||
1176 | sprintf(adapter->name[vector], "%s:mbx", netdev->name); | |
1177 | err = request_irq(adapter->msix_entries[vector].vector, | |
1178 | &ixgbevf_msix_mbx, 0, adapter->name[vector], netdev); | |
1179 | if (err) { | |
1180 | hw_dbg(&adapter->hw, | |
1181 | "request_irq for msix_mbx failed: %d\n", err); | |
1182 | goto free_queue_irqs; | |
1183 | } | |
1184 | ||
1185 | return 0; | |
1186 | ||
1187 | free_queue_irqs: | |
1188 | for (i = vector - 1; i >= 0; i--) | |
1189 | free_irq(adapter->msix_entries[--vector].vector, | |
1190 | &(adapter->q_vector[i])); | |
1191 | pci_disable_msix(adapter->pdev); | |
1192 | kfree(adapter->msix_entries); | |
1193 | adapter->msix_entries = NULL; | |
1194 | return err; | |
1195 | } | |
1196 | ||
1197 | static inline void ixgbevf_reset_q_vectors(struct ixgbevf_adapter *adapter) | |
1198 | { | |
1199 | int i, q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS; | |
1200 | ||
1201 | for (i = 0; i < q_vectors; i++) { | |
1202 | struct ixgbevf_q_vector *q_vector = adapter->q_vector[i]; | |
1203 | bitmap_zero(q_vector->rxr_idx, MAX_RX_QUEUES); | |
1204 | bitmap_zero(q_vector->txr_idx, MAX_TX_QUEUES); | |
1205 | q_vector->rxr_count = 0; | |
1206 | q_vector->txr_count = 0; | |
1207 | q_vector->eitr = adapter->eitr_param; | |
1208 | } | |
1209 | } | |
1210 | ||
1211 | /** | |
1212 | * ixgbevf_request_irq - initialize interrupts | |
1213 | * @adapter: board private structure | |
1214 | * | |
1215 | * Attempts to configure interrupts using the best available | |
1216 | * capabilities of the hardware and kernel. | |
1217 | **/ | |
1218 | static int ixgbevf_request_irq(struct ixgbevf_adapter *adapter) | |
1219 | { | |
1220 | int err = 0; | |
1221 | ||
1222 | err = ixgbevf_request_msix_irqs(adapter); | |
1223 | ||
1224 | if (err) | |
1225 | hw_dbg(&adapter->hw, | |
1226 | "request_irq failed, Error %d\n", err); | |
1227 | ||
1228 | return err; | |
1229 | } | |
1230 | ||
1231 | static void ixgbevf_free_irq(struct ixgbevf_adapter *adapter) | |
1232 | { | |
1233 | struct net_device *netdev = adapter->netdev; | |
1234 | int i, q_vectors; | |
1235 | ||
1236 | q_vectors = adapter->num_msix_vectors; | |
1237 | ||
1238 | i = q_vectors - 1; | |
1239 | ||
1240 | free_irq(adapter->msix_entries[i].vector, netdev); | |
1241 | i--; | |
1242 | ||
1243 | for (; i >= 0; i--) { | |
1244 | free_irq(adapter->msix_entries[i].vector, | |
1245 | adapter->q_vector[i]); | |
1246 | } | |
1247 | ||
1248 | ixgbevf_reset_q_vectors(adapter); | |
1249 | } | |
1250 | ||
1251 | /** | |
1252 | * ixgbevf_irq_disable - Mask off interrupt generation on the NIC | |
1253 | * @adapter: board private structure | |
1254 | **/ | |
1255 | static inline void ixgbevf_irq_disable(struct ixgbevf_adapter *adapter) | |
1256 | { | |
1257 | int i; | |
1258 | struct ixgbe_hw *hw = &adapter->hw; | |
1259 | ||
1260 | IXGBE_WRITE_REG(hw, IXGBE_VTEIMC, ~0); | |
1261 | ||
1262 | IXGBE_WRITE_FLUSH(hw); | |
1263 | ||
1264 | for (i = 0; i < adapter->num_msix_vectors; i++) | |
1265 | synchronize_irq(adapter->msix_entries[i].vector); | |
1266 | } | |
1267 | ||
1268 | /** | |
1269 | * ixgbevf_irq_enable - Enable default interrupt generation settings | |
1270 | * @adapter: board private structure | |
1271 | **/ | |
1272 | static inline void ixgbevf_irq_enable(struct ixgbevf_adapter *adapter, | |
1273 | bool queues, bool flush) | |
1274 | { | |
1275 | struct ixgbe_hw *hw = &adapter->hw; | |
1276 | u32 mask; | |
1277 | u64 qmask; | |
1278 | ||
1279 | mask = (IXGBE_EIMS_ENABLE_MASK & ~IXGBE_EIMS_RTX_QUEUE); | |
1280 | qmask = ~0; | |
1281 | ||
1282 | IXGBE_WRITE_REG(hw, IXGBE_VTEIMS, mask); | |
1283 | ||
1284 | if (queues) | |
1285 | ixgbevf_irq_enable_queues(adapter, qmask); | |
1286 | ||
1287 | if (flush) | |
1288 | IXGBE_WRITE_FLUSH(hw); | |
1289 | } | |
1290 | ||
1291 | /** | |
1292 | * ixgbevf_configure_tx - Configure 82599 VF Transmit Unit after Reset | |
1293 | * @adapter: board private structure | |
1294 | * | |
1295 | * Configure the Tx unit of the MAC after a reset. | |
1296 | **/ | |
1297 | static void ixgbevf_configure_tx(struct ixgbevf_adapter *adapter) | |
1298 | { | |
1299 | u64 tdba; | |
1300 | struct ixgbe_hw *hw = &adapter->hw; | |
1301 | u32 i, j, tdlen, txctrl; | |
1302 | ||
1303 | /* Setup the HW Tx Head and Tail descriptor pointers */ | |
1304 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
1305 | struct ixgbevf_ring *ring = &adapter->tx_ring[i]; | |
1306 | j = ring->reg_idx; | |
1307 | tdba = ring->dma; | |
1308 | tdlen = ring->count * sizeof(union ixgbe_adv_tx_desc); | |
1309 | IXGBE_WRITE_REG(hw, IXGBE_VFTDBAL(j), | |
1310 | (tdba & DMA_BIT_MASK(32))); | |
1311 | IXGBE_WRITE_REG(hw, IXGBE_VFTDBAH(j), (tdba >> 32)); | |
1312 | IXGBE_WRITE_REG(hw, IXGBE_VFTDLEN(j), tdlen); | |
1313 | IXGBE_WRITE_REG(hw, IXGBE_VFTDH(j), 0); | |
1314 | IXGBE_WRITE_REG(hw, IXGBE_VFTDT(j), 0); | |
1315 | adapter->tx_ring[i].head = IXGBE_VFTDH(j); | |
1316 | adapter->tx_ring[i].tail = IXGBE_VFTDT(j); | |
1317 | /* Disable Tx Head Writeback RO bit, since this hoses | |
1318 | * bookkeeping if things aren't delivered in order. | |
1319 | */ | |
1320 | txctrl = IXGBE_READ_REG(hw, IXGBE_VFDCA_TXCTRL(j)); | |
1321 | txctrl &= ~IXGBE_DCA_TXCTRL_TX_WB_RO_EN; | |
1322 | IXGBE_WRITE_REG(hw, IXGBE_VFDCA_TXCTRL(j), txctrl); | |
1323 | } | |
1324 | } | |
1325 | ||
1326 | #define IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT 2 | |
1327 | ||
1328 | static void ixgbevf_configure_srrctl(struct ixgbevf_adapter *adapter, int index) | |
1329 | { | |
1330 | struct ixgbevf_ring *rx_ring; | |
1331 | struct ixgbe_hw *hw = &adapter->hw; | |
1332 | u32 srrctl; | |
1333 | ||
1334 | rx_ring = &adapter->rx_ring[index]; | |
1335 | ||
1336 | srrctl = IXGBE_SRRCTL_DROP_EN; | |
1337 | ||
1338 | if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) { | |
1339 | u16 bufsz = IXGBEVF_RXBUFFER_2048; | |
1340 | /* grow the amount we can receive on large page machines */ | |
1341 | if (bufsz < (PAGE_SIZE / 2)) | |
1342 | bufsz = (PAGE_SIZE / 2); | |
1343 | /* cap the bufsz at our largest descriptor size */ | |
1344 | bufsz = min((u16)IXGBEVF_MAX_RXBUFFER, bufsz); | |
1345 | ||
1346 | srrctl |= bufsz >> IXGBE_SRRCTL_BSIZEPKT_SHIFT; | |
1347 | srrctl |= IXGBE_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS; | |
1348 | srrctl |= ((IXGBEVF_RX_HDR_SIZE << | |
1349 | IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT) & | |
1350 | IXGBE_SRRCTL_BSIZEHDR_MASK); | |
1351 | } else { | |
1352 | srrctl |= IXGBE_SRRCTL_DESCTYPE_ADV_ONEBUF; | |
1353 | ||
1354 | if (rx_ring->rx_buf_len == MAXIMUM_ETHERNET_VLAN_SIZE) | |
1355 | srrctl |= IXGBEVF_RXBUFFER_2048 >> | |
1356 | IXGBE_SRRCTL_BSIZEPKT_SHIFT; | |
1357 | else | |
1358 | srrctl |= rx_ring->rx_buf_len >> | |
1359 | IXGBE_SRRCTL_BSIZEPKT_SHIFT; | |
1360 | } | |
1361 | IXGBE_WRITE_REG(hw, IXGBE_VFSRRCTL(index), srrctl); | |
1362 | } | |
1363 | ||
1364 | /** | |
1365 | * ixgbevf_configure_rx - Configure 82599 VF Receive Unit after Reset | |
1366 | * @adapter: board private structure | |
1367 | * | |
1368 | * Configure the Rx unit of the MAC after a reset. | |
1369 | **/ | |
1370 | static void ixgbevf_configure_rx(struct ixgbevf_adapter *adapter) | |
1371 | { | |
1372 | u64 rdba; | |
1373 | struct ixgbe_hw *hw = &adapter->hw; | |
1374 | struct net_device *netdev = adapter->netdev; | |
1375 | int max_frame = netdev->mtu + ETH_HLEN + ETH_FCS_LEN; | |
1376 | int i, j; | |
1377 | u32 rdlen; | |
1378 | int rx_buf_len; | |
1379 | ||
1380 | /* Decide whether to use packet split mode or not */ | |
1381 | if (netdev->mtu > ETH_DATA_LEN) { | |
1382 | if (adapter->flags & IXGBE_FLAG_RX_PS_CAPABLE) | |
1383 | adapter->flags |= IXGBE_FLAG_RX_PS_ENABLED; | |
1384 | else | |
1385 | adapter->flags &= ~IXGBE_FLAG_RX_PS_ENABLED; | |
1386 | } else { | |
1387 | if (adapter->flags & IXGBE_FLAG_RX_1BUF_CAPABLE) | |
1388 | adapter->flags &= ~IXGBE_FLAG_RX_PS_ENABLED; | |
1389 | else | |
1390 | adapter->flags |= IXGBE_FLAG_RX_PS_ENABLED; | |
1391 | } | |
1392 | ||
1393 | /* Set the RX buffer length according to the mode */ | |
1394 | if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) { | |
1395 | /* PSRTYPE must be initialized in 82599 */ | |
1396 | u32 psrtype = IXGBE_PSRTYPE_TCPHDR | | |
1397 | IXGBE_PSRTYPE_UDPHDR | | |
1398 | IXGBE_PSRTYPE_IPV4HDR | | |
1399 | IXGBE_PSRTYPE_IPV6HDR | | |
1400 | IXGBE_PSRTYPE_L2HDR; | |
1401 | IXGBE_WRITE_REG(hw, IXGBE_VFPSRTYPE, psrtype); | |
1402 | rx_buf_len = IXGBEVF_RX_HDR_SIZE; | |
1403 | } else { | |
1404 | IXGBE_WRITE_REG(hw, IXGBE_VFPSRTYPE, 0); | |
1405 | if (netdev->mtu <= ETH_DATA_LEN) | |
1406 | rx_buf_len = MAXIMUM_ETHERNET_VLAN_SIZE; | |
1407 | else | |
1408 | rx_buf_len = ALIGN(max_frame, 1024); | |
1409 | } | |
1410 | ||
1411 | rdlen = adapter->rx_ring[0].count * sizeof(union ixgbe_adv_rx_desc); | |
1412 | /* Setup the HW Rx Head and Tail Descriptor Pointers and | |
1413 | * the Base and Length of the Rx Descriptor Ring */ | |
1414 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
1415 | rdba = adapter->rx_ring[i].dma; | |
1416 | j = adapter->rx_ring[i].reg_idx; | |
1417 | IXGBE_WRITE_REG(hw, IXGBE_VFRDBAL(j), | |
1418 | (rdba & DMA_BIT_MASK(32))); | |
1419 | IXGBE_WRITE_REG(hw, IXGBE_VFRDBAH(j), (rdba >> 32)); | |
1420 | IXGBE_WRITE_REG(hw, IXGBE_VFRDLEN(j), rdlen); | |
1421 | IXGBE_WRITE_REG(hw, IXGBE_VFRDH(j), 0); | |
1422 | IXGBE_WRITE_REG(hw, IXGBE_VFRDT(j), 0); | |
1423 | adapter->rx_ring[i].head = IXGBE_VFRDH(j); | |
1424 | adapter->rx_ring[i].tail = IXGBE_VFRDT(j); | |
1425 | adapter->rx_ring[i].rx_buf_len = rx_buf_len; | |
1426 | ||
1427 | ixgbevf_configure_srrctl(adapter, j); | |
1428 | } | |
1429 | } | |
1430 | ||
1431 | static void ixgbevf_vlan_rx_register(struct net_device *netdev, | |
1432 | struct vlan_group *grp) | |
1433 | { | |
1434 | struct ixgbevf_adapter *adapter = netdev_priv(netdev); | |
1435 | struct ixgbe_hw *hw = &adapter->hw; | |
1436 | int i, j; | |
1437 | u32 ctrl; | |
1438 | ||
1439 | adapter->vlgrp = grp; | |
1440 | ||
1441 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
1442 | j = adapter->rx_ring[i].reg_idx; | |
1443 | ctrl = IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(j)); | |
1444 | ctrl |= IXGBE_RXDCTL_VME; | |
1445 | IXGBE_WRITE_REG(hw, IXGBE_VFRXDCTL(j), ctrl); | |
1446 | } | |
1447 | } | |
1448 | ||
1449 | static void ixgbevf_vlan_rx_add_vid(struct net_device *netdev, u16 vid) | |
1450 | { | |
1451 | struct ixgbevf_adapter *adapter = netdev_priv(netdev); | |
1452 | struct ixgbe_hw *hw = &adapter->hw; | |
1453 | struct net_device *v_netdev; | |
1454 | ||
1455 | /* add VID to filter table */ | |
1456 | if (hw->mac.ops.set_vfta) | |
1457 | hw->mac.ops.set_vfta(hw, vid, 0, true); | |
1458 | /* | |
1459 | * Copy feature flags from netdev to the vlan netdev for this vid. | |
1460 | * This allows things like TSO to bubble down to our vlan device. | |
1461 | */ | |
1462 | v_netdev = vlan_group_get_device(adapter->vlgrp, vid); | |
1463 | v_netdev->features |= adapter->netdev->features; | |
1464 | vlan_group_set_device(adapter->vlgrp, vid, v_netdev); | |
1465 | } | |
1466 | ||
1467 | static void ixgbevf_vlan_rx_kill_vid(struct net_device *netdev, u16 vid) | |
1468 | { | |
1469 | struct ixgbevf_adapter *adapter = netdev_priv(netdev); | |
1470 | struct ixgbe_hw *hw = &adapter->hw; | |
1471 | ||
1472 | if (!test_bit(__IXGBEVF_DOWN, &adapter->state)) | |
1473 | ixgbevf_irq_disable(adapter); | |
1474 | ||
1475 | vlan_group_set_device(adapter->vlgrp, vid, NULL); | |
1476 | ||
1477 | if (!test_bit(__IXGBEVF_DOWN, &adapter->state)) | |
1478 | ixgbevf_irq_enable(adapter, true, true); | |
1479 | ||
1480 | /* remove VID from filter table */ | |
1481 | if (hw->mac.ops.set_vfta) | |
1482 | hw->mac.ops.set_vfta(hw, vid, 0, false); | |
1483 | } | |
1484 | ||
1485 | static void ixgbevf_restore_vlan(struct ixgbevf_adapter *adapter) | |
1486 | { | |
1487 | ixgbevf_vlan_rx_register(adapter->netdev, adapter->vlgrp); | |
1488 | ||
1489 | if (adapter->vlgrp) { | |
1490 | u16 vid; | |
1491 | for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) { | |
1492 | if (!vlan_group_get_device(adapter->vlgrp, vid)) | |
1493 | continue; | |
1494 | ixgbevf_vlan_rx_add_vid(adapter->netdev, vid); | |
1495 | } | |
1496 | } | |
1497 | } | |
1498 | ||
1499 | static u8 *ixgbevf_addr_list_itr(struct ixgbe_hw *hw, u8 **mc_addr_ptr, | |
1500 | u32 *vmdq) | |
1501 | { | |
1502 | struct dev_mc_list *mc_ptr; | |
1503 | u8 *addr = *mc_addr_ptr; | |
1504 | *vmdq = 0; | |
1505 | ||
1506 | mc_ptr = container_of(addr, struct dev_mc_list, dmi_addr[0]); | |
1507 | if (mc_ptr->next) | |
1508 | *mc_addr_ptr = mc_ptr->next->dmi_addr; | |
1509 | else | |
1510 | *mc_addr_ptr = NULL; | |
1511 | ||
1512 | return addr; | |
1513 | } | |
1514 | ||
1515 | /** | |
1516 | * ixgbevf_set_rx_mode - Multicast set | |
1517 | * @netdev: network interface device structure | |
1518 | * | |
1519 | * The set_rx_method entry point is called whenever the multicast address | |
1520 | * list or the network interface flags are updated. This routine is | |
1521 | * responsible for configuring the hardware for proper multicast mode. | |
1522 | **/ | |
1523 | static void ixgbevf_set_rx_mode(struct net_device *netdev) | |
1524 | { | |
1525 | struct ixgbevf_adapter *adapter = netdev_priv(netdev); | |
1526 | struct ixgbe_hw *hw = &adapter->hw; | |
1527 | u8 *addr_list = NULL; | |
1528 | int addr_count = 0; | |
1529 | ||
1530 | /* reprogram multicast list */ | |
4cd24eaf | 1531 | addr_count = netdev_mc_count(netdev); |
92915f71 GR |
1532 | if (addr_count) |
1533 | addr_list = netdev->mc_list->dmi_addr; | |
1534 | if (hw->mac.ops.update_mc_addr_list) | |
1535 | hw->mac.ops.update_mc_addr_list(hw, addr_list, addr_count, | |
1536 | ixgbevf_addr_list_itr); | |
1537 | } | |
1538 | ||
1539 | static void ixgbevf_napi_enable_all(struct ixgbevf_adapter *adapter) | |
1540 | { | |
1541 | int q_idx; | |
1542 | struct ixgbevf_q_vector *q_vector; | |
1543 | int q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS; | |
1544 | ||
1545 | for (q_idx = 0; q_idx < q_vectors; q_idx++) { | |
1546 | struct napi_struct *napi; | |
1547 | q_vector = adapter->q_vector[q_idx]; | |
1548 | if (!q_vector->rxr_count) | |
1549 | continue; | |
1550 | napi = &q_vector->napi; | |
1551 | if (q_vector->rxr_count > 1) | |
1552 | napi->poll = &ixgbevf_clean_rxonly_many; | |
1553 | ||
1554 | napi_enable(napi); | |
1555 | } | |
1556 | } | |
1557 | ||
1558 | static void ixgbevf_napi_disable_all(struct ixgbevf_adapter *adapter) | |
1559 | { | |
1560 | int q_idx; | |
1561 | struct ixgbevf_q_vector *q_vector; | |
1562 | int q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS; | |
1563 | ||
1564 | for (q_idx = 0; q_idx < q_vectors; q_idx++) { | |
1565 | q_vector = adapter->q_vector[q_idx]; | |
1566 | if (!q_vector->rxr_count) | |
1567 | continue; | |
1568 | napi_disable(&q_vector->napi); | |
1569 | } | |
1570 | } | |
1571 | ||
1572 | static void ixgbevf_configure(struct ixgbevf_adapter *adapter) | |
1573 | { | |
1574 | struct net_device *netdev = adapter->netdev; | |
1575 | int i; | |
1576 | ||
1577 | ixgbevf_set_rx_mode(netdev); | |
1578 | ||
1579 | ixgbevf_restore_vlan(adapter); | |
1580 | ||
1581 | ixgbevf_configure_tx(adapter); | |
1582 | ixgbevf_configure_rx(adapter); | |
1583 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
1584 | struct ixgbevf_ring *ring = &adapter->rx_ring[i]; | |
1585 | ixgbevf_alloc_rx_buffers(adapter, ring, ring->count); | |
1586 | ring->next_to_use = ring->count - 1; | |
1587 | writel(ring->next_to_use, adapter->hw.hw_addr + ring->tail); | |
1588 | } | |
1589 | } | |
1590 | ||
1591 | #define IXGBE_MAX_RX_DESC_POLL 10 | |
1592 | static inline void ixgbevf_rx_desc_queue_enable(struct ixgbevf_adapter *adapter, | |
1593 | int rxr) | |
1594 | { | |
1595 | struct ixgbe_hw *hw = &adapter->hw; | |
1596 | int j = adapter->rx_ring[rxr].reg_idx; | |
1597 | int k; | |
1598 | ||
1599 | for (k = 0; k < IXGBE_MAX_RX_DESC_POLL; k++) { | |
1600 | if (IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(j)) & IXGBE_RXDCTL_ENABLE) | |
1601 | break; | |
1602 | else | |
1603 | msleep(1); | |
1604 | } | |
1605 | if (k >= IXGBE_MAX_RX_DESC_POLL) { | |
1606 | hw_dbg(hw, "RXDCTL.ENABLE on Rx queue %d " | |
1607 | "not set within the polling period\n", rxr); | |
1608 | } | |
1609 | ||
1610 | ixgbevf_release_rx_desc(&adapter->hw, &adapter->rx_ring[rxr], | |
1611 | (adapter->rx_ring[rxr].count - 1)); | |
1612 | } | |
1613 | ||
33bd9f60 GR |
1614 | static void ixgbevf_save_reset_stats(struct ixgbevf_adapter *adapter) |
1615 | { | |
1616 | /* Only save pre-reset stats if there are some */ | |
1617 | if (adapter->stats.vfgprc || adapter->stats.vfgptc) { | |
1618 | adapter->stats.saved_reset_vfgprc += adapter->stats.vfgprc - | |
1619 | adapter->stats.base_vfgprc; | |
1620 | adapter->stats.saved_reset_vfgptc += adapter->stats.vfgptc - | |
1621 | adapter->stats.base_vfgptc; | |
1622 | adapter->stats.saved_reset_vfgorc += adapter->stats.vfgorc - | |
1623 | adapter->stats.base_vfgorc; | |
1624 | adapter->stats.saved_reset_vfgotc += adapter->stats.vfgotc - | |
1625 | adapter->stats.base_vfgotc; | |
1626 | adapter->stats.saved_reset_vfmprc += adapter->stats.vfmprc - | |
1627 | adapter->stats.base_vfmprc; | |
1628 | } | |
1629 | } | |
1630 | ||
1631 | static void ixgbevf_init_last_counter_stats(struct ixgbevf_adapter *adapter) | |
1632 | { | |
1633 | struct ixgbe_hw *hw = &adapter->hw; | |
1634 | ||
1635 | adapter->stats.last_vfgprc = IXGBE_READ_REG(hw, IXGBE_VFGPRC); | |
1636 | adapter->stats.last_vfgorc = IXGBE_READ_REG(hw, IXGBE_VFGORC_LSB); | |
1637 | adapter->stats.last_vfgorc |= | |
1638 | (((u64)(IXGBE_READ_REG(hw, IXGBE_VFGORC_MSB))) << 32); | |
1639 | adapter->stats.last_vfgptc = IXGBE_READ_REG(hw, IXGBE_VFGPTC); | |
1640 | adapter->stats.last_vfgotc = IXGBE_READ_REG(hw, IXGBE_VFGOTC_LSB); | |
1641 | adapter->stats.last_vfgotc |= | |
1642 | (((u64)(IXGBE_READ_REG(hw, IXGBE_VFGOTC_MSB))) << 32); | |
1643 | adapter->stats.last_vfmprc = IXGBE_READ_REG(hw, IXGBE_VFMPRC); | |
1644 | ||
1645 | adapter->stats.base_vfgprc = adapter->stats.last_vfgprc; | |
1646 | adapter->stats.base_vfgorc = adapter->stats.last_vfgorc; | |
1647 | adapter->stats.base_vfgptc = adapter->stats.last_vfgptc; | |
1648 | adapter->stats.base_vfgotc = adapter->stats.last_vfgotc; | |
1649 | adapter->stats.base_vfmprc = adapter->stats.last_vfmprc; | |
1650 | } | |
1651 | ||
92915f71 GR |
1652 | static int ixgbevf_up_complete(struct ixgbevf_adapter *adapter) |
1653 | { | |
1654 | struct net_device *netdev = adapter->netdev; | |
1655 | struct ixgbe_hw *hw = &adapter->hw; | |
1656 | int i, j = 0; | |
1657 | int num_rx_rings = adapter->num_rx_queues; | |
1658 | u32 txdctl, rxdctl; | |
1659 | ||
1660 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
1661 | j = adapter->tx_ring[i].reg_idx; | |
1662 | txdctl = IXGBE_READ_REG(hw, IXGBE_VFTXDCTL(j)); | |
1663 | /* enable WTHRESH=8 descriptors, to encourage burst writeback */ | |
1664 | txdctl |= (8 << 16); | |
1665 | IXGBE_WRITE_REG(hw, IXGBE_VFTXDCTL(j), txdctl); | |
1666 | } | |
1667 | ||
1668 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
1669 | j = adapter->tx_ring[i].reg_idx; | |
1670 | txdctl = IXGBE_READ_REG(hw, IXGBE_VFTXDCTL(j)); | |
1671 | txdctl |= IXGBE_TXDCTL_ENABLE; | |
1672 | IXGBE_WRITE_REG(hw, IXGBE_VFTXDCTL(j), txdctl); | |
1673 | } | |
1674 | ||
1675 | for (i = 0; i < num_rx_rings; i++) { | |
1676 | j = adapter->rx_ring[i].reg_idx; | |
1677 | rxdctl = IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(j)); | |
1678 | rxdctl |= IXGBE_RXDCTL_ENABLE; | |
1679 | IXGBE_WRITE_REG(hw, IXGBE_VFRXDCTL(j), rxdctl); | |
1680 | ixgbevf_rx_desc_queue_enable(adapter, i); | |
1681 | } | |
1682 | ||
1683 | ixgbevf_configure_msix(adapter); | |
1684 | ||
1685 | if (hw->mac.ops.set_rar) { | |
1686 | if (is_valid_ether_addr(hw->mac.addr)) | |
1687 | hw->mac.ops.set_rar(hw, 0, hw->mac.addr, 0); | |
1688 | else | |
1689 | hw->mac.ops.set_rar(hw, 0, hw->mac.perm_addr, 0); | |
1690 | } | |
1691 | ||
1692 | clear_bit(__IXGBEVF_DOWN, &adapter->state); | |
1693 | ixgbevf_napi_enable_all(adapter); | |
1694 | ||
1695 | /* enable transmits */ | |
1696 | netif_tx_start_all_queues(netdev); | |
1697 | ||
33bd9f60 GR |
1698 | ixgbevf_save_reset_stats(adapter); |
1699 | ixgbevf_init_last_counter_stats(adapter); | |
1700 | ||
92915f71 GR |
1701 | /* bring the link up in the watchdog, this could race with our first |
1702 | * link up interrupt but shouldn't be a problem */ | |
1703 | adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE; | |
1704 | adapter->link_check_timeout = jiffies; | |
1705 | mod_timer(&adapter->watchdog_timer, jiffies); | |
1706 | return 0; | |
1707 | } | |
1708 | ||
1709 | int ixgbevf_up(struct ixgbevf_adapter *adapter) | |
1710 | { | |
1711 | int err; | |
1712 | struct ixgbe_hw *hw = &adapter->hw; | |
1713 | ||
1714 | ixgbevf_configure(adapter); | |
1715 | ||
1716 | err = ixgbevf_up_complete(adapter); | |
1717 | ||
1718 | /* clear any pending interrupts, may auto mask */ | |
1719 | IXGBE_READ_REG(hw, IXGBE_VTEICR); | |
1720 | ||
1721 | ixgbevf_irq_enable(adapter, true, true); | |
1722 | ||
1723 | return err; | |
1724 | } | |
1725 | ||
1726 | /** | |
1727 | * ixgbevf_clean_rx_ring - Free Rx Buffers per Queue | |
1728 | * @adapter: board private structure | |
1729 | * @rx_ring: ring to free buffers from | |
1730 | **/ | |
1731 | static void ixgbevf_clean_rx_ring(struct ixgbevf_adapter *adapter, | |
1732 | struct ixgbevf_ring *rx_ring) | |
1733 | { | |
1734 | struct pci_dev *pdev = adapter->pdev; | |
1735 | unsigned long size; | |
1736 | unsigned int i; | |
1737 | ||
c0456c23 GR |
1738 | if (!rx_ring->rx_buffer_info) |
1739 | return; | |
92915f71 | 1740 | |
c0456c23 | 1741 | /* Free all the Rx ring sk_buffs */ |
92915f71 GR |
1742 | for (i = 0; i < rx_ring->count; i++) { |
1743 | struct ixgbevf_rx_buffer *rx_buffer_info; | |
1744 | ||
1745 | rx_buffer_info = &rx_ring->rx_buffer_info[i]; | |
1746 | if (rx_buffer_info->dma) { | |
1747 | pci_unmap_single(pdev, rx_buffer_info->dma, | |
1748 | rx_ring->rx_buf_len, | |
1749 | PCI_DMA_FROMDEVICE); | |
1750 | rx_buffer_info->dma = 0; | |
1751 | } | |
1752 | if (rx_buffer_info->skb) { | |
1753 | struct sk_buff *skb = rx_buffer_info->skb; | |
1754 | rx_buffer_info->skb = NULL; | |
1755 | do { | |
1756 | struct sk_buff *this = skb; | |
1757 | skb = skb->prev; | |
1758 | dev_kfree_skb(this); | |
1759 | } while (skb); | |
1760 | } | |
1761 | if (!rx_buffer_info->page) | |
1762 | continue; | |
1763 | pci_unmap_page(pdev, rx_buffer_info->page_dma, PAGE_SIZE / 2, | |
1764 | PCI_DMA_FROMDEVICE); | |
1765 | rx_buffer_info->page_dma = 0; | |
1766 | put_page(rx_buffer_info->page); | |
1767 | rx_buffer_info->page = NULL; | |
1768 | rx_buffer_info->page_offset = 0; | |
1769 | } | |
1770 | ||
1771 | size = sizeof(struct ixgbevf_rx_buffer) * rx_ring->count; | |
1772 | memset(rx_ring->rx_buffer_info, 0, size); | |
1773 | ||
1774 | /* Zero out the descriptor ring */ | |
1775 | memset(rx_ring->desc, 0, rx_ring->size); | |
1776 | ||
1777 | rx_ring->next_to_clean = 0; | |
1778 | rx_ring->next_to_use = 0; | |
1779 | ||
1780 | if (rx_ring->head) | |
1781 | writel(0, adapter->hw.hw_addr + rx_ring->head); | |
1782 | if (rx_ring->tail) | |
1783 | writel(0, adapter->hw.hw_addr + rx_ring->tail); | |
1784 | } | |
1785 | ||
1786 | /** | |
1787 | * ixgbevf_clean_tx_ring - Free Tx Buffers | |
1788 | * @adapter: board private structure | |
1789 | * @tx_ring: ring to be cleaned | |
1790 | **/ | |
1791 | static void ixgbevf_clean_tx_ring(struct ixgbevf_adapter *adapter, | |
1792 | struct ixgbevf_ring *tx_ring) | |
1793 | { | |
1794 | struct ixgbevf_tx_buffer *tx_buffer_info; | |
1795 | unsigned long size; | |
1796 | unsigned int i; | |
1797 | ||
c0456c23 GR |
1798 | if (!tx_ring->tx_buffer_info) |
1799 | return; | |
1800 | ||
92915f71 GR |
1801 | /* Free all the Tx ring sk_buffs */ |
1802 | ||
1803 | for (i = 0; i < tx_ring->count; i++) { | |
1804 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; | |
1805 | ixgbevf_unmap_and_free_tx_resource(adapter, tx_buffer_info); | |
1806 | } | |
1807 | ||
1808 | size = sizeof(struct ixgbevf_tx_buffer) * tx_ring->count; | |
1809 | memset(tx_ring->tx_buffer_info, 0, size); | |
1810 | ||
1811 | memset(tx_ring->desc, 0, tx_ring->size); | |
1812 | ||
1813 | tx_ring->next_to_use = 0; | |
1814 | tx_ring->next_to_clean = 0; | |
1815 | ||
1816 | if (tx_ring->head) | |
1817 | writel(0, adapter->hw.hw_addr + tx_ring->head); | |
1818 | if (tx_ring->tail) | |
1819 | writel(0, adapter->hw.hw_addr + tx_ring->tail); | |
1820 | } | |
1821 | ||
1822 | /** | |
1823 | * ixgbevf_clean_all_rx_rings - Free Rx Buffers for all queues | |
1824 | * @adapter: board private structure | |
1825 | **/ | |
1826 | static void ixgbevf_clean_all_rx_rings(struct ixgbevf_adapter *adapter) | |
1827 | { | |
1828 | int i; | |
1829 | ||
1830 | for (i = 0; i < adapter->num_rx_queues; i++) | |
1831 | ixgbevf_clean_rx_ring(adapter, &adapter->rx_ring[i]); | |
1832 | } | |
1833 | ||
1834 | /** | |
1835 | * ixgbevf_clean_all_tx_rings - Free Tx Buffers for all queues | |
1836 | * @adapter: board private structure | |
1837 | **/ | |
1838 | static void ixgbevf_clean_all_tx_rings(struct ixgbevf_adapter *adapter) | |
1839 | { | |
1840 | int i; | |
1841 | ||
1842 | for (i = 0; i < adapter->num_tx_queues; i++) | |
1843 | ixgbevf_clean_tx_ring(adapter, &adapter->tx_ring[i]); | |
1844 | } | |
1845 | ||
1846 | void ixgbevf_down(struct ixgbevf_adapter *adapter) | |
1847 | { | |
1848 | struct net_device *netdev = adapter->netdev; | |
1849 | struct ixgbe_hw *hw = &adapter->hw; | |
1850 | u32 txdctl; | |
1851 | int i, j; | |
1852 | ||
1853 | /* signal that we are down to the interrupt handler */ | |
1854 | set_bit(__IXGBEVF_DOWN, &adapter->state); | |
1855 | /* disable receives */ | |
1856 | ||
1857 | netif_tx_disable(netdev); | |
1858 | ||
1859 | msleep(10); | |
1860 | ||
1861 | netif_tx_stop_all_queues(netdev); | |
1862 | ||
1863 | ixgbevf_irq_disable(adapter); | |
1864 | ||
1865 | ixgbevf_napi_disable_all(adapter); | |
1866 | ||
1867 | del_timer_sync(&adapter->watchdog_timer); | |
1868 | /* can't call flush scheduled work here because it can deadlock | |
1869 | * if linkwatch_event tries to acquire the rtnl_lock which we are | |
1870 | * holding */ | |
1871 | while (adapter->flags & IXGBE_FLAG_IN_WATCHDOG_TASK) | |
1872 | msleep(1); | |
1873 | ||
1874 | /* disable transmits in the hardware now that interrupts are off */ | |
1875 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
1876 | j = adapter->tx_ring[i].reg_idx; | |
1877 | txdctl = IXGBE_READ_REG(hw, IXGBE_VFTXDCTL(j)); | |
1878 | IXGBE_WRITE_REG(hw, IXGBE_VFTXDCTL(j), | |
1879 | (txdctl & ~IXGBE_TXDCTL_ENABLE)); | |
1880 | } | |
1881 | ||
1882 | netif_carrier_off(netdev); | |
1883 | ||
1884 | if (!pci_channel_offline(adapter->pdev)) | |
1885 | ixgbevf_reset(adapter); | |
1886 | ||
1887 | ixgbevf_clean_all_tx_rings(adapter); | |
1888 | ixgbevf_clean_all_rx_rings(adapter); | |
1889 | } | |
1890 | ||
1891 | void ixgbevf_reinit_locked(struct ixgbevf_adapter *adapter) | |
1892 | { | |
c0456c23 GR |
1893 | struct ixgbe_hw *hw = &adapter->hw; |
1894 | ||
92915f71 | 1895 | WARN_ON(in_interrupt()); |
c0456c23 | 1896 | |
92915f71 GR |
1897 | while (test_and_set_bit(__IXGBEVF_RESETTING, &adapter->state)) |
1898 | msleep(1); | |
1899 | ||
c0456c23 GR |
1900 | /* |
1901 | * Check if PF is up before re-init. If not then skip until | |
1902 | * later when the PF is up and ready to service requests from | |
1903 | * the VF via mailbox. If the VF is up and running then the | |
1904 | * watchdog task will continue to schedule reset tasks until | |
1905 | * the PF is up and running. | |
1906 | */ | |
1907 | if (!hw->mac.ops.reset_hw(hw)) { | |
1908 | ixgbevf_down(adapter); | |
1909 | ixgbevf_up(adapter); | |
1910 | } | |
92915f71 GR |
1911 | |
1912 | clear_bit(__IXGBEVF_RESETTING, &adapter->state); | |
1913 | } | |
1914 | ||
1915 | void ixgbevf_reset(struct ixgbevf_adapter *adapter) | |
1916 | { | |
1917 | struct ixgbe_hw *hw = &adapter->hw; | |
1918 | struct net_device *netdev = adapter->netdev; | |
1919 | ||
1920 | if (hw->mac.ops.reset_hw(hw)) | |
1921 | hw_dbg(hw, "PF still resetting\n"); | |
1922 | else | |
1923 | hw->mac.ops.init_hw(hw); | |
1924 | ||
1925 | if (is_valid_ether_addr(adapter->hw.mac.addr)) { | |
1926 | memcpy(netdev->dev_addr, adapter->hw.mac.addr, | |
1927 | netdev->addr_len); | |
1928 | memcpy(netdev->perm_addr, adapter->hw.mac.addr, | |
1929 | netdev->addr_len); | |
1930 | } | |
1931 | } | |
1932 | ||
1933 | static void ixgbevf_acquire_msix_vectors(struct ixgbevf_adapter *adapter, | |
1934 | int vectors) | |
1935 | { | |
1936 | int err, vector_threshold; | |
1937 | ||
1938 | /* We'll want at least 3 (vector_threshold): | |
1939 | * 1) TxQ[0] Cleanup | |
1940 | * 2) RxQ[0] Cleanup | |
1941 | * 3) Other (Link Status Change, etc.) | |
1942 | */ | |
1943 | vector_threshold = MIN_MSIX_COUNT; | |
1944 | ||
1945 | /* The more we get, the more we will assign to Tx/Rx Cleanup | |
1946 | * for the separate queues...where Rx Cleanup >= Tx Cleanup. | |
1947 | * Right now, we simply care about how many we'll get; we'll | |
1948 | * set them up later while requesting irq's. | |
1949 | */ | |
1950 | while (vectors >= vector_threshold) { | |
1951 | err = pci_enable_msix(adapter->pdev, adapter->msix_entries, | |
1952 | vectors); | |
1953 | if (!err) /* Success in acquiring all requested vectors. */ | |
1954 | break; | |
1955 | else if (err < 0) | |
1956 | vectors = 0; /* Nasty failure, quit now */ | |
1957 | else /* err == number of vectors we should try again with */ | |
1958 | vectors = err; | |
1959 | } | |
1960 | ||
1961 | if (vectors < vector_threshold) { | |
1962 | /* Can't allocate enough MSI-X interrupts? Oh well. | |
1963 | * This just means we'll go with either a single MSI | |
1964 | * vector or fall back to legacy interrupts. | |
1965 | */ | |
1966 | hw_dbg(&adapter->hw, | |
1967 | "Unable to allocate MSI-X interrupts\n"); | |
1968 | kfree(adapter->msix_entries); | |
1969 | adapter->msix_entries = NULL; | |
1970 | } else { | |
1971 | /* | |
1972 | * Adjust for only the vectors we'll use, which is minimum | |
1973 | * of max_msix_q_vectors + NON_Q_VECTORS, or the number of | |
1974 | * vectors we were allocated. | |
1975 | */ | |
1976 | adapter->num_msix_vectors = vectors; | |
1977 | } | |
1978 | } | |
1979 | ||
1980 | /* | |
1981 | * ixgbe_set_num_queues: Allocate queues for device, feature dependant | |
1982 | * @adapter: board private structure to initialize | |
1983 | * | |
1984 | * This is the top level queue allocation routine. The order here is very | |
1985 | * important, starting with the "most" number of features turned on at once, | |
1986 | * and ending with the smallest set of features. This way large combinations | |
1987 | * can be allocated if they're turned on, and smaller combinations are the | |
1988 | * fallthrough conditions. | |
1989 | * | |
1990 | **/ | |
1991 | static void ixgbevf_set_num_queues(struct ixgbevf_adapter *adapter) | |
1992 | { | |
1993 | /* Start with base case */ | |
1994 | adapter->num_rx_queues = 1; | |
1995 | adapter->num_tx_queues = 1; | |
1996 | adapter->num_rx_pools = adapter->num_rx_queues; | |
1997 | adapter->num_rx_queues_per_pool = 1; | |
1998 | } | |
1999 | ||
2000 | /** | |
2001 | * ixgbevf_alloc_queues - Allocate memory for all rings | |
2002 | * @adapter: board private structure to initialize | |
2003 | * | |
2004 | * We allocate one ring per queue at run-time since we don't know the | |
2005 | * number of queues at compile-time. The polling_netdev array is | |
2006 | * intended for Multiqueue, but should work fine with a single queue. | |
2007 | **/ | |
2008 | static int ixgbevf_alloc_queues(struct ixgbevf_adapter *adapter) | |
2009 | { | |
2010 | int i; | |
2011 | ||
2012 | adapter->tx_ring = kcalloc(adapter->num_tx_queues, | |
2013 | sizeof(struct ixgbevf_ring), GFP_KERNEL); | |
2014 | if (!adapter->tx_ring) | |
2015 | goto err_tx_ring_allocation; | |
2016 | ||
2017 | adapter->rx_ring = kcalloc(adapter->num_rx_queues, | |
2018 | sizeof(struct ixgbevf_ring), GFP_KERNEL); | |
2019 | if (!adapter->rx_ring) | |
2020 | goto err_rx_ring_allocation; | |
2021 | ||
2022 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
2023 | adapter->tx_ring[i].count = adapter->tx_ring_count; | |
2024 | adapter->tx_ring[i].queue_index = i; | |
2025 | adapter->tx_ring[i].reg_idx = i; | |
2026 | } | |
2027 | ||
2028 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
2029 | adapter->rx_ring[i].count = adapter->rx_ring_count; | |
2030 | adapter->rx_ring[i].queue_index = i; | |
2031 | adapter->rx_ring[i].reg_idx = i; | |
2032 | } | |
2033 | ||
2034 | return 0; | |
2035 | ||
2036 | err_rx_ring_allocation: | |
2037 | kfree(adapter->tx_ring); | |
2038 | err_tx_ring_allocation: | |
2039 | return -ENOMEM; | |
2040 | } | |
2041 | ||
2042 | /** | |
2043 | * ixgbevf_set_interrupt_capability - set MSI-X or FAIL if not supported | |
2044 | * @adapter: board private structure to initialize | |
2045 | * | |
2046 | * Attempt to configure the interrupts using the best available | |
2047 | * capabilities of the hardware and the kernel. | |
2048 | **/ | |
2049 | static int ixgbevf_set_interrupt_capability(struct ixgbevf_adapter *adapter) | |
2050 | { | |
2051 | int err = 0; | |
2052 | int vector, v_budget; | |
2053 | ||
2054 | /* | |
2055 | * It's easy to be greedy for MSI-X vectors, but it really | |
2056 | * doesn't do us much good if we have a lot more vectors | |
2057 | * than CPU's. So let's be conservative and only ask for | |
2058 | * (roughly) twice the number of vectors as there are CPU's. | |
2059 | */ | |
2060 | v_budget = min(adapter->num_rx_queues + adapter->num_tx_queues, | |
2061 | (int)(num_online_cpus() * 2)) + NON_Q_VECTORS; | |
2062 | ||
2063 | /* A failure in MSI-X entry allocation isn't fatal, but it does | |
2064 | * mean we disable MSI-X capabilities of the adapter. */ | |
2065 | adapter->msix_entries = kcalloc(v_budget, | |
2066 | sizeof(struct msix_entry), GFP_KERNEL); | |
2067 | if (!adapter->msix_entries) { | |
2068 | err = -ENOMEM; | |
2069 | goto out; | |
2070 | } | |
2071 | ||
2072 | for (vector = 0; vector < v_budget; vector++) | |
2073 | adapter->msix_entries[vector].entry = vector; | |
2074 | ||
2075 | ixgbevf_acquire_msix_vectors(adapter, v_budget); | |
2076 | ||
2077 | out: | |
2078 | return err; | |
2079 | } | |
2080 | ||
2081 | /** | |
2082 | * ixgbevf_alloc_q_vectors - Allocate memory for interrupt vectors | |
2083 | * @adapter: board private structure to initialize | |
2084 | * | |
2085 | * We allocate one q_vector per queue interrupt. If allocation fails we | |
2086 | * return -ENOMEM. | |
2087 | **/ | |
2088 | static int ixgbevf_alloc_q_vectors(struct ixgbevf_adapter *adapter) | |
2089 | { | |
2090 | int q_idx, num_q_vectors; | |
2091 | struct ixgbevf_q_vector *q_vector; | |
2092 | int napi_vectors; | |
2093 | int (*poll)(struct napi_struct *, int); | |
2094 | ||
2095 | num_q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS; | |
2096 | napi_vectors = adapter->num_rx_queues; | |
2097 | poll = &ixgbevf_clean_rxonly; | |
2098 | ||
2099 | for (q_idx = 0; q_idx < num_q_vectors; q_idx++) { | |
2100 | q_vector = kzalloc(sizeof(struct ixgbevf_q_vector), GFP_KERNEL); | |
2101 | if (!q_vector) | |
2102 | goto err_out; | |
2103 | q_vector->adapter = adapter; | |
2104 | q_vector->v_idx = q_idx; | |
2105 | q_vector->eitr = adapter->eitr_param; | |
2106 | if (q_idx < napi_vectors) | |
2107 | netif_napi_add(adapter->netdev, &q_vector->napi, | |
2108 | (*poll), 64); | |
2109 | adapter->q_vector[q_idx] = q_vector; | |
2110 | } | |
2111 | ||
2112 | return 0; | |
2113 | ||
2114 | err_out: | |
2115 | while (q_idx) { | |
2116 | q_idx--; | |
2117 | q_vector = adapter->q_vector[q_idx]; | |
2118 | netif_napi_del(&q_vector->napi); | |
2119 | kfree(q_vector); | |
2120 | adapter->q_vector[q_idx] = NULL; | |
2121 | } | |
2122 | return -ENOMEM; | |
2123 | } | |
2124 | ||
2125 | /** | |
2126 | * ixgbevf_free_q_vectors - Free memory allocated for interrupt vectors | |
2127 | * @adapter: board private structure to initialize | |
2128 | * | |
2129 | * This function frees the memory allocated to the q_vectors. In addition if | |
2130 | * NAPI is enabled it will delete any references to the NAPI struct prior | |
2131 | * to freeing the q_vector. | |
2132 | **/ | |
2133 | static void ixgbevf_free_q_vectors(struct ixgbevf_adapter *adapter) | |
2134 | { | |
2135 | int q_idx, num_q_vectors; | |
2136 | int napi_vectors; | |
2137 | ||
2138 | num_q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS; | |
2139 | napi_vectors = adapter->num_rx_queues; | |
2140 | ||
2141 | for (q_idx = 0; q_idx < num_q_vectors; q_idx++) { | |
2142 | struct ixgbevf_q_vector *q_vector = adapter->q_vector[q_idx]; | |
2143 | ||
2144 | adapter->q_vector[q_idx] = NULL; | |
2145 | if (q_idx < napi_vectors) | |
2146 | netif_napi_del(&q_vector->napi); | |
2147 | kfree(q_vector); | |
2148 | } | |
2149 | } | |
2150 | ||
2151 | /** | |
2152 | * ixgbevf_reset_interrupt_capability - Reset MSIX setup | |
2153 | * @adapter: board private structure | |
2154 | * | |
2155 | **/ | |
2156 | static void ixgbevf_reset_interrupt_capability(struct ixgbevf_adapter *adapter) | |
2157 | { | |
2158 | pci_disable_msix(adapter->pdev); | |
2159 | kfree(adapter->msix_entries); | |
2160 | adapter->msix_entries = NULL; | |
2161 | ||
2162 | return; | |
2163 | } | |
2164 | ||
2165 | /** | |
2166 | * ixgbevf_init_interrupt_scheme - Determine if MSIX is supported and init | |
2167 | * @adapter: board private structure to initialize | |
2168 | * | |
2169 | **/ | |
2170 | static int ixgbevf_init_interrupt_scheme(struct ixgbevf_adapter *adapter) | |
2171 | { | |
2172 | int err; | |
2173 | ||
2174 | /* Number of supported queues */ | |
2175 | ixgbevf_set_num_queues(adapter); | |
2176 | ||
2177 | err = ixgbevf_set_interrupt_capability(adapter); | |
2178 | if (err) { | |
2179 | hw_dbg(&adapter->hw, | |
2180 | "Unable to setup interrupt capabilities\n"); | |
2181 | goto err_set_interrupt; | |
2182 | } | |
2183 | ||
2184 | err = ixgbevf_alloc_q_vectors(adapter); | |
2185 | if (err) { | |
2186 | hw_dbg(&adapter->hw, "Unable to allocate memory for queue " | |
2187 | "vectors\n"); | |
2188 | goto err_alloc_q_vectors; | |
2189 | } | |
2190 | ||
2191 | err = ixgbevf_alloc_queues(adapter); | |
2192 | if (err) { | |
2193 | printk(KERN_ERR "Unable to allocate memory for queues\n"); | |
2194 | goto err_alloc_queues; | |
2195 | } | |
2196 | ||
2197 | hw_dbg(&adapter->hw, "Multiqueue %s: Rx Queue count = %u, " | |
2198 | "Tx Queue count = %u\n", | |
2199 | (adapter->num_rx_queues > 1) ? "Enabled" : | |
2200 | "Disabled", adapter->num_rx_queues, adapter->num_tx_queues); | |
2201 | ||
2202 | set_bit(__IXGBEVF_DOWN, &adapter->state); | |
2203 | ||
2204 | return 0; | |
2205 | err_alloc_queues: | |
2206 | ixgbevf_free_q_vectors(adapter); | |
2207 | err_alloc_q_vectors: | |
2208 | ixgbevf_reset_interrupt_capability(adapter); | |
2209 | err_set_interrupt: | |
2210 | return err; | |
2211 | } | |
2212 | ||
2213 | /** | |
2214 | * ixgbevf_sw_init - Initialize general software structures | |
2215 | * (struct ixgbevf_adapter) | |
2216 | * @adapter: board private structure to initialize | |
2217 | * | |
2218 | * ixgbevf_sw_init initializes the Adapter private data structure. | |
2219 | * Fields are initialized based on PCI device information and | |
2220 | * OS network device settings (MTU size). | |
2221 | **/ | |
2222 | static int __devinit ixgbevf_sw_init(struct ixgbevf_adapter *adapter) | |
2223 | { | |
2224 | struct ixgbe_hw *hw = &adapter->hw; | |
2225 | struct pci_dev *pdev = adapter->pdev; | |
2226 | int err; | |
2227 | ||
2228 | /* PCI config space info */ | |
2229 | ||
2230 | hw->vendor_id = pdev->vendor; | |
2231 | hw->device_id = pdev->device; | |
2232 | pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id); | |
2233 | hw->subsystem_vendor_id = pdev->subsystem_vendor; | |
2234 | hw->subsystem_device_id = pdev->subsystem_device; | |
2235 | ||
2236 | hw->mbx.ops.init_params(hw); | |
2237 | hw->mac.max_tx_queues = MAX_TX_QUEUES; | |
2238 | hw->mac.max_rx_queues = MAX_RX_QUEUES; | |
2239 | err = hw->mac.ops.reset_hw(hw); | |
2240 | if (err) { | |
2241 | dev_info(&pdev->dev, | |
2242 | "PF still in reset state, assigning new address\n"); | |
2243 | random_ether_addr(hw->mac.addr); | |
2244 | } else { | |
2245 | err = hw->mac.ops.init_hw(hw); | |
2246 | if (err) { | |
2247 | printk(KERN_ERR "init_shared_code failed: %d\n", err); | |
2248 | goto out; | |
2249 | } | |
2250 | } | |
2251 | ||
2252 | /* Enable dynamic interrupt throttling rates */ | |
2253 | adapter->eitr_param = 20000; | |
2254 | adapter->itr_setting = 1; | |
2255 | ||
2256 | /* set defaults for eitr in MegaBytes */ | |
2257 | adapter->eitr_low = 10; | |
2258 | adapter->eitr_high = 20; | |
2259 | ||
2260 | /* set default ring sizes */ | |
2261 | adapter->tx_ring_count = IXGBEVF_DEFAULT_TXD; | |
2262 | adapter->rx_ring_count = IXGBEVF_DEFAULT_RXD; | |
2263 | ||
2264 | /* enable rx csum by default */ | |
2265 | adapter->flags |= IXGBE_FLAG_RX_CSUM_ENABLED; | |
2266 | ||
2267 | set_bit(__IXGBEVF_DOWN, &adapter->state); | |
2268 | ||
2269 | out: | |
2270 | return err; | |
2271 | } | |
2272 | ||
92915f71 GR |
2273 | #define UPDATE_VF_COUNTER_32bit(reg, last_counter, counter) \ |
2274 | { \ | |
2275 | u32 current_counter = IXGBE_READ_REG(hw, reg); \ | |
2276 | if (current_counter < last_counter) \ | |
2277 | counter += 0x100000000LL; \ | |
2278 | last_counter = current_counter; \ | |
2279 | counter &= 0xFFFFFFFF00000000LL; \ | |
2280 | counter |= current_counter; \ | |
2281 | } | |
2282 | ||
2283 | #define UPDATE_VF_COUNTER_36bit(reg_lsb, reg_msb, last_counter, counter) \ | |
2284 | { \ | |
2285 | u64 current_counter_lsb = IXGBE_READ_REG(hw, reg_lsb); \ | |
2286 | u64 current_counter_msb = IXGBE_READ_REG(hw, reg_msb); \ | |
2287 | u64 current_counter = (current_counter_msb << 32) | \ | |
2288 | current_counter_lsb; \ | |
2289 | if (current_counter < last_counter) \ | |
2290 | counter += 0x1000000000LL; \ | |
2291 | last_counter = current_counter; \ | |
2292 | counter &= 0xFFFFFFF000000000LL; \ | |
2293 | counter |= current_counter; \ | |
2294 | } | |
2295 | /** | |
2296 | * ixgbevf_update_stats - Update the board statistics counters. | |
2297 | * @adapter: board private structure | |
2298 | **/ | |
2299 | void ixgbevf_update_stats(struct ixgbevf_adapter *adapter) | |
2300 | { | |
2301 | struct ixgbe_hw *hw = &adapter->hw; | |
2302 | ||
2303 | UPDATE_VF_COUNTER_32bit(IXGBE_VFGPRC, adapter->stats.last_vfgprc, | |
2304 | adapter->stats.vfgprc); | |
2305 | UPDATE_VF_COUNTER_32bit(IXGBE_VFGPTC, adapter->stats.last_vfgptc, | |
2306 | adapter->stats.vfgptc); | |
2307 | UPDATE_VF_COUNTER_36bit(IXGBE_VFGORC_LSB, IXGBE_VFGORC_MSB, | |
2308 | adapter->stats.last_vfgorc, | |
2309 | adapter->stats.vfgorc); | |
2310 | UPDATE_VF_COUNTER_36bit(IXGBE_VFGOTC_LSB, IXGBE_VFGOTC_MSB, | |
2311 | adapter->stats.last_vfgotc, | |
2312 | adapter->stats.vfgotc); | |
2313 | UPDATE_VF_COUNTER_32bit(IXGBE_VFMPRC, adapter->stats.last_vfmprc, | |
2314 | adapter->stats.vfmprc); | |
2315 | ||
2316 | /* Fill out the OS statistics structure */ | |
2317 | adapter->net_stats.multicast = adapter->stats.vfmprc - | |
2318 | adapter->stats.base_vfmprc; | |
2319 | } | |
2320 | ||
2321 | /** | |
2322 | * ixgbevf_watchdog - Timer Call-back | |
2323 | * @data: pointer to adapter cast into an unsigned long | |
2324 | **/ | |
2325 | static void ixgbevf_watchdog(unsigned long data) | |
2326 | { | |
2327 | struct ixgbevf_adapter *adapter = (struct ixgbevf_adapter *)data; | |
2328 | struct ixgbe_hw *hw = &adapter->hw; | |
2329 | u64 eics = 0; | |
2330 | int i; | |
2331 | ||
2332 | /* | |
2333 | * Do the watchdog outside of interrupt context due to the lovely | |
2334 | * delays that some of the newer hardware requires | |
2335 | */ | |
2336 | ||
2337 | if (test_bit(__IXGBEVF_DOWN, &adapter->state)) | |
2338 | goto watchdog_short_circuit; | |
2339 | ||
2340 | /* get one bit for every active tx/rx interrupt vector */ | |
2341 | for (i = 0; i < adapter->num_msix_vectors - NON_Q_VECTORS; i++) { | |
2342 | struct ixgbevf_q_vector *qv = adapter->q_vector[i]; | |
2343 | if (qv->rxr_count || qv->txr_count) | |
2344 | eics |= (1 << i); | |
2345 | } | |
2346 | ||
2347 | IXGBE_WRITE_REG(hw, IXGBE_VTEICS, (u32)eics); | |
2348 | ||
2349 | watchdog_short_circuit: | |
2350 | schedule_work(&adapter->watchdog_task); | |
2351 | } | |
2352 | ||
2353 | /** | |
2354 | * ixgbevf_tx_timeout - Respond to a Tx Hang | |
2355 | * @netdev: network interface device structure | |
2356 | **/ | |
2357 | static void ixgbevf_tx_timeout(struct net_device *netdev) | |
2358 | { | |
2359 | struct ixgbevf_adapter *adapter = netdev_priv(netdev); | |
2360 | ||
2361 | /* Do the reset outside of interrupt context */ | |
2362 | schedule_work(&adapter->reset_task); | |
2363 | } | |
2364 | ||
2365 | static void ixgbevf_reset_task(struct work_struct *work) | |
2366 | { | |
2367 | struct ixgbevf_adapter *adapter; | |
2368 | adapter = container_of(work, struct ixgbevf_adapter, reset_task); | |
2369 | ||
2370 | /* If we're already down or resetting, just bail */ | |
2371 | if (test_bit(__IXGBEVF_DOWN, &adapter->state) || | |
2372 | test_bit(__IXGBEVF_RESETTING, &adapter->state)) | |
2373 | return; | |
2374 | ||
2375 | adapter->tx_timeout_count++; | |
2376 | ||
2377 | ixgbevf_reinit_locked(adapter); | |
2378 | } | |
2379 | ||
2380 | /** | |
2381 | * ixgbevf_watchdog_task - worker thread to bring link up | |
2382 | * @work: pointer to work_struct containing our data | |
2383 | **/ | |
2384 | static void ixgbevf_watchdog_task(struct work_struct *work) | |
2385 | { | |
2386 | struct ixgbevf_adapter *adapter = container_of(work, | |
2387 | struct ixgbevf_adapter, | |
2388 | watchdog_task); | |
2389 | struct net_device *netdev = adapter->netdev; | |
2390 | struct ixgbe_hw *hw = &adapter->hw; | |
2391 | u32 link_speed = adapter->link_speed; | |
2392 | bool link_up = adapter->link_up; | |
2393 | ||
2394 | adapter->flags |= IXGBE_FLAG_IN_WATCHDOG_TASK; | |
2395 | ||
2396 | /* | |
2397 | * Always check the link on the watchdog because we have | |
2398 | * no LSC interrupt | |
2399 | */ | |
2400 | if (hw->mac.ops.check_link) { | |
2401 | if ((hw->mac.ops.check_link(hw, &link_speed, | |
2402 | &link_up, false)) != 0) { | |
2403 | adapter->link_up = link_up; | |
2404 | adapter->link_speed = link_speed; | |
da6b3330 GR |
2405 | netif_carrier_off(netdev); |
2406 | netif_tx_stop_all_queues(netdev); | |
92915f71 GR |
2407 | schedule_work(&adapter->reset_task); |
2408 | goto pf_has_reset; | |
2409 | } | |
2410 | } else { | |
2411 | /* always assume link is up, if no check link | |
2412 | * function */ | |
2413 | link_speed = IXGBE_LINK_SPEED_10GB_FULL; | |
2414 | link_up = true; | |
2415 | } | |
2416 | adapter->link_up = link_up; | |
2417 | adapter->link_speed = link_speed; | |
2418 | ||
2419 | if (link_up) { | |
2420 | if (!netif_carrier_ok(netdev)) { | |
2421 | hw_dbg(&adapter->hw, "NIC Link is Up %s, ", | |
2422 | ((link_speed == IXGBE_LINK_SPEED_10GB_FULL) ? | |
29b8dd02 | 2423 | "10 Gbps\n" : "1 Gbps\n")); |
92915f71 GR |
2424 | netif_carrier_on(netdev); |
2425 | netif_tx_wake_all_queues(netdev); | |
2426 | } else { | |
2427 | /* Force detection of hung controller */ | |
2428 | adapter->detect_tx_hung = true; | |
2429 | } | |
2430 | } else { | |
2431 | adapter->link_up = false; | |
2432 | adapter->link_speed = 0; | |
2433 | if (netif_carrier_ok(netdev)) { | |
2434 | hw_dbg(&adapter->hw, "NIC Link is Down\n"); | |
2435 | netif_carrier_off(netdev); | |
2436 | netif_tx_stop_all_queues(netdev); | |
2437 | } | |
2438 | } | |
2439 | ||
92915f71 GR |
2440 | ixgbevf_update_stats(adapter); |
2441 | ||
33bd9f60 | 2442 | pf_has_reset: |
92915f71 GR |
2443 | /* Force detection of hung controller every watchdog period */ |
2444 | adapter->detect_tx_hung = true; | |
2445 | ||
2446 | /* Reset the timer */ | |
2447 | if (!test_bit(__IXGBEVF_DOWN, &adapter->state)) | |
2448 | mod_timer(&adapter->watchdog_timer, | |
2449 | round_jiffies(jiffies + (2 * HZ))); | |
2450 | ||
2451 | adapter->flags &= ~IXGBE_FLAG_IN_WATCHDOG_TASK; | |
2452 | } | |
2453 | ||
2454 | /** | |
2455 | * ixgbevf_free_tx_resources - Free Tx Resources per Queue | |
2456 | * @adapter: board private structure | |
2457 | * @tx_ring: Tx descriptor ring for a specific queue | |
2458 | * | |
2459 | * Free all transmit software resources | |
2460 | **/ | |
2461 | void ixgbevf_free_tx_resources(struct ixgbevf_adapter *adapter, | |
2462 | struct ixgbevf_ring *tx_ring) | |
2463 | { | |
2464 | struct pci_dev *pdev = adapter->pdev; | |
2465 | ||
92915f71 GR |
2466 | ixgbevf_clean_tx_ring(adapter, tx_ring); |
2467 | ||
2468 | vfree(tx_ring->tx_buffer_info); | |
2469 | tx_ring->tx_buffer_info = NULL; | |
2470 | ||
2471 | pci_free_consistent(pdev, tx_ring->size, tx_ring->desc, tx_ring->dma); | |
2472 | ||
2473 | tx_ring->desc = NULL; | |
2474 | } | |
2475 | ||
2476 | /** | |
2477 | * ixgbevf_free_all_tx_resources - Free Tx Resources for All Queues | |
2478 | * @adapter: board private structure | |
2479 | * | |
2480 | * Free all transmit software resources | |
2481 | **/ | |
2482 | static void ixgbevf_free_all_tx_resources(struct ixgbevf_adapter *adapter) | |
2483 | { | |
2484 | int i; | |
2485 | ||
2486 | for (i = 0; i < adapter->num_tx_queues; i++) | |
2487 | if (adapter->tx_ring[i].desc) | |
2488 | ixgbevf_free_tx_resources(adapter, | |
2489 | &adapter->tx_ring[i]); | |
2490 | ||
2491 | } | |
2492 | ||
2493 | /** | |
2494 | * ixgbevf_setup_tx_resources - allocate Tx resources (Descriptors) | |
2495 | * @adapter: board private structure | |
2496 | * @tx_ring: tx descriptor ring (for a specific queue) to setup | |
2497 | * | |
2498 | * Return 0 on success, negative on failure | |
2499 | **/ | |
2500 | int ixgbevf_setup_tx_resources(struct ixgbevf_adapter *adapter, | |
2501 | struct ixgbevf_ring *tx_ring) | |
2502 | { | |
2503 | struct pci_dev *pdev = adapter->pdev; | |
2504 | int size; | |
2505 | ||
2506 | size = sizeof(struct ixgbevf_tx_buffer) * tx_ring->count; | |
2507 | tx_ring->tx_buffer_info = vmalloc(size); | |
2508 | if (!tx_ring->tx_buffer_info) | |
2509 | goto err; | |
2510 | memset(tx_ring->tx_buffer_info, 0, size); | |
2511 | ||
2512 | /* round up to nearest 4K */ | |
2513 | tx_ring->size = tx_ring->count * sizeof(union ixgbe_adv_tx_desc); | |
2514 | tx_ring->size = ALIGN(tx_ring->size, 4096); | |
2515 | ||
2516 | tx_ring->desc = pci_alloc_consistent(pdev, tx_ring->size, | |
2517 | &tx_ring->dma); | |
2518 | if (!tx_ring->desc) | |
2519 | goto err; | |
2520 | ||
2521 | tx_ring->next_to_use = 0; | |
2522 | tx_ring->next_to_clean = 0; | |
2523 | tx_ring->work_limit = tx_ring->count; | |
2524 | return 0; | |
2525 | ||
2526 | err: | |
2527 | vfree(tx_ring->tx_buffer_info); | |
2528 | tx_ring->tx_buffer_info = NULL; | |
2529 | hw_dbg(&adapter->hw, "Unable to allocate memory for the transmit " | |
2530 | "descriptor ring\n"); | |
2531 | return -ENOMEM; | |
2532 | } | |
2533 | ||
2534 | /** | |
2535 | * ixgbevf_setup_all_tx_resources - allocate all queues Tx resources | |
2536 | * @adapter: board private structure | |
2537 | * | |
2538 | * If this function returns with an error, then it's possible one or | |
2539 | * more of the rings is populated (while the rest are not). It is the | |
2540 | * callers duty to clean those orphaned rings. | |
2541 | * | |
2542 | * Return 0 on success, negative on failure | |
2543 | **/ | |
2544 | static int ixgbevf_setup_all_tx_resources(struct ixgbevf_adapter *adapter) | |
2545 | { | |
2546 | int i, err = 0; | |
2547 | ||
2548 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
2549 | err = ixgbevf_setup_tx_resources(adapter, &adapter->tx_ring[i]); | |
2550 | if (!err) | |
2551 | continue; | |
2552 | hw_dbg(&adapter->hw, | |
2553 | "Allocation for Tx Queue %u failed\n", i); | |
2554 | break; | |
2555 | } | |
2556 | ||
2557 | return err; | |
2558 | } | |
2559 | ||
2560 | /** | |
2561 | * ixgbevf_setup_rx_resources - allocate Rx resources (Descriptors) | |
2562 | * @adapter: board private structure | |
2563 | * @rx_ring: rx descriptor ring (for a specific queue) to setup | |
2564 | * | |
2565 | * Returns 0 on success, negative on failure | |
2566 | **/ | |
2567 | int ixgbevf_setup_rx_resources(struct ixgbevf_adapter *adapter, | |
2568 | struct ixgbevf_ring *rx_ring) | |
2569 | { | |
2570 | struct pci_dev *pdev = adapter->pdev; | |
2571 | int size; | |
2572 | ||
2573 | size = sizeof(struct ixgbevf_rx_buffer) * rx_ring->count; | |
2574 | rx_ring->rx_buffer_info = vmalloc(size); | |
2575 | if (!rx_ring->rx_buffer_info) { | |
2576 | hw_dbg(&adapter->hw, | |
2577 | "Unable to vmalloc buffer memory for " | |
2578 | "the receive descriptor ring\n"); | |
2579 | goto alloc_failed; | |
2580 | } | |
2581 | memset(rx_ring->rx_buffer_info, 0, size); | |
2582 | ||
2583 | /* Round up to nearest 4K */ | |
2584 | rx_ring->size = rx_ring->count * sizeof(union ixgbe_adv_rx_desc); | |
2585 | rx_ring->size = ALIGN(rx_ring->size, 4096); | |
2586 | ||
2587 | rx_ring->desc = pci_alloc_consistent(pdev, rx_ring->size, | |
2588 | &rx_ring->dma); | |
2589 | ||
2590 | if (!rx_ring->desc) { | |
2591 | hw_dbg(&adapter->hw, | |
2592 | "Unable to allocate memory for " | |
2593 | "the receive descriptor ring\n"); | |
2594 | vfree(rx_ring->rx_buffer_info); | |
2595 | rx_ring->rx_buffer_info = NULL; | |
2596 | goto alloc_failed; | |
2597 | } | |
2598 | ||
2599 | rx_ring->next_to_clean = 0; | |
2600 | rx_ring->next_to_use = 0; | |
2601 | ||
2602 | return 0; | |
2603 | alloc_failed: | |
2604 | return -ENOMEM; | |
2605 | } | |
2606 | ||
2607 | /** | |
2608 | * ixgbevf_setup_all_rx_resources - allocate all queues Rx resources | |
2609 | * @adapter: board private structure | |
2610 | * | |
2611 | * If this function returns with an error, then it's possible one or | |
2612 | * more of the rings is populated (while the rest are not). It is the | |
2613 | * callers duty to clean those orphaned rings. | |
2614 | * | |
2615 | * Return 0 on success, negative on failure | |
2616 | **/ | |
2617 | static int ixgbevf_setup_all_rx_resources(struct ixgbevf_adapter *adapter) | |
2618 | { | |
2619 | int i, err = 0; | |
2620 | ||
2621 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
2622 | err = ixgbevf_setup_rx_resources(adapter, &adapter->rx_ring[i]); | |
2623 | if (!err) | |
2624 | continue; | |
2625 | hw_dbg(&adapter->hw, | |
2626 | "Allocation for Rx Queue %u failed\n", i); | |
2627 | break; | |
2628 | } | |
2629 | return err; | |
2630 | } | |
2631 | ||
2632 | /** | |
2633 | * ixgbevf_free_rx_resources - Free Rx Resources | |
2634 | * @adapter: board private structure | |
2635 | * @rx_ring: ring to clean the resources from | |
2636 | * | |
2637 | * Free all receive software resources | |
2638 | **/ | |
2639 | void ixgbevf_free_rx_resources(struct ixgbevf_adapter *adapter, | |
2640 | struct ixgbevf_ring *rx_ring) | |
2641 | { | |
2642 | struct pci_dev *pdev = adapter->pdev; | |
2643 | ||
2644 | ixgbevf_clean_rx_ring(adapter, rx_ring); | |
2645 | ||
2646 | vfree(rx_ring->rx_buffer_info); | |
2647 | rx_ring->rx_buffer_info = NULL; | |
2648 | ||
2649 | pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma); | |
2650 | ||
2651 | rx_ring->desc = NULL; | |
2652 | } | |
2653 | ||
2654 | /** | |
2655 | * ixgbevf_free_all_rx_resources - Free Rx Resources for All Queues | |
2656 | * @adapter: board private structure | |
2657 | * | |
2658 | * Free all receive software resources | |
2659 | **/ | |
2660 | static void ixgbevf_free_all_rx_resources(struct ixgbevf_adapter *adapter) | |
2661 | { | |
2662 | int i; | |
2663 | ||
2664 | for (i = 0; i < adapter->num_rx_queues; i++) | |
2665 | if (adapter->rx_ring[i].desc) | |
2666 | ixgbevf_free_rx_resources(adapter, | |
2667 | &adapter->rx_ring[i]); | |
2668 | } | |
2669 | ||
2670 | /** | |
2671 | * ixgbevf_open - Called when a network interface is made active | |
2672 | * @netdev: network interface device structure | |
2673 | * | |
2674 | * Returns 0 on success, negative value on failure | |
2675 | * | |
2676 | * The open entry point is called when a network interface is made | |
2677 | * active by the system (IFF_UP). At this point all resources needed | |
2678 | * for transmit and receive operations are allocated, the interrupt | |
2679 | * handler is registered with the OS, the watchdog timer is started, | |
2680 | * and the stack is notified that the interface is ready. | |
2681 | **/ | |
2682 | static int ixgbevf_open(struct net_device *netdev) | |
2683 | { | |
2684 | struct ixgbevf_adapter *adapter = netdev_priv(netdev); | |
2685 | struct ixgbe_hw *hw = &adapter->hw; | |
2686 | int err; | |
2687 | ||
2688 | /* disallow open during test */ | |
2689 | if (test_bit(__IXGBEVF_TESTING, &adapter->state)) | |
2690 | return -EBUSY; | |
2691 | ||
2692 | if (hw->adapter_stopped) { | |
2693 | ixgbevf_reset(adapter); | |
2694 | /* if adapter is still stopped then PF isn't up and | |
2695 | * the vf can't start. */ | |
2696 | if (hw->adapter_stopped) { | |
2697 | err = IXGBE_ERR_MBX; | |
2698 | printk(KERN_ERR "Unable to start - perhaps the PF" | |
29b8dd02 | 2699 | " Driver isn't up yet\n"); |
92915f71 GR |
2700 | goto err_setup_reset; |
2701 | } | |
2702 | } | |
2703 | ||
2704 | /* allocate transmit descriptors */ | |
2705 | err = ixgbevf_setup_all_tx_resources(adapter); | |
2706 | if (err) | |
2707 | goto err_setup_tx; | |
2708 | ||
2709 | /* allocate receive descriptors */ | |
2710 | err = ixgbevf_setup_all_rx_resources(adapter); | |
2711 | if (err) | |
2712 | goto err_setup_rx; | |
2713 | ||
2714 | ixgbevf_configure(adapter); | |
2715 | ||
2716 | /* | |
2717 | * Map the Tx/Rx rings to the vectors we were allotted. | |
2718 | * if request_irq will be called in this function map_rings | |
2719 | * must be called *before* up_complete | |
2720 | */ | |
2721 | ixgbevf_map_rings_to_vectors(adapter); | |
2722 | ||
2723 | err = ixgbevf_up_complete(adapter); | |
2724 | if (err) | |
2725 | goto err_up; | |
2726 | ||
2727 | /* clear any pending interrupts, may auto mask */ | |
2728 | IXGBE_READ_REG(hw, IXGBE_VTEICR); | |
2729 | err = ixgbevf_request_irq(adapter); | |
2730 | if (err) | |
2731 | goto err_req_irq; | |
2732 | ||
2733 | ixgbevf_irq_enable(adapter, true, true); | |
2734 | ||
2735 | return 0; | |
2736 | ||
2737 | err_req_irq: | |
2738 | ixgbevf_down(adapter); | |
2739 | err_up: | |
2740 | ixgbevf_free_irq(adapter); | |
2741 | err_setup_rx: | |
2742 | ixgbevf_free_all_rx_resources(adapter); | |
2743 | err_setup_tx: | |
2744 | ixgbevf_free_all_tx_resources(adapter); | |
2745 | ixgbevf_reset(adapter); | |
2746 | ||
2747 | err_setup_reset: | |
2748 | ||
2749 | return err; | |
2750 | } | |
2751 | ||
2752 | /** | |
2753 | * ixgbevf_close - Disables a network interface | |
2754 | * @netdev: network interface device structure | |
2755 | * | |
2756 | * Returns 0, this is not allowed to fail | |
2757 | * | |
2758 | * The close entry point is called when an interface is de-activated | |
2759 | * by the OS. The hardware is still under the drivers control, but | |
2760 | * needs to be disabled. A global MAC reset is issued to stop the | |
2761 | * hardware, and all transmit and receive resources are freed. | |
2762 | **/ | |
2763 | static int ixgbevf_close(struct net_device *netdev) | |
2764 | { | |
2765 | struct ixgbevf_adapter *adapter = netdev_priv(netdev); | |
2766 | ||
2767 | ixgbevf_down(adapter); | |
2768 | ixgbevf_free_irq(adapter); | |
2769 | ||
2770 | ixgbevf_free_all_tx_resources(adapter); | |
2771 | ixgbevf_free_all_rx_resources(adapter); | |
2772 | ||
2773 | return 0; | |
2774 | } | |
2775 | ||
2776 | static int ixgbevf_tso(struct ixgbevf_adapter *adapter, | |
2777 | struct ixgbevf_ring *tx_ring, | |
2778 | struct sk_buff *skb, u32 tx_flags, u8 *hdr_len) | |
2779 | { | |
2780 | struct ixgbe_adv_tx_context_desc *context_desc; | |
2781 | unsigned int i; | |
2782 | int err; | |
2783 | struct ixgbevf_tx_buffer *tx_buffer_info; | |
2784 | u32 vlan_macip_lens = 0, type_tucmd_mlhl; | |
2785 | u32 mss_l4len_idx, l4len; | |
2786 | ||
2787 | if (skb_is_gso(skb)) { | |
2788 | if (skb_header_cloned(skb)) { | |
2789 | err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); | |
2790 | if (err) | |
2791 | return err; | |
2792 | } | |
2793 | l4len = tcp_hdrlen(skb); | |
2794 | *hdr_len += l4len; | |
2795 | ||
2796 | if (skb->protocol == htons(ETH_P_IP)) { | |
2797 | struct iphdr *iph = ip_hdr(skb); | |
2798 | iph->tot_len = 0; | |
2799 | iph->check = 0; | |
2800 | tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, | |
2801 | iph->daddr, 0, | |
2802 | IPPROTO_TCP, | |
2803 | 0); | |
2804 | adapter->hw_tso_ctxt++; | |
9010bc33 | 2805 | } else if (skb_is_gso_v6(skb)) { |
92915f71 GR |
2806 | ipv6_hdr(skb)->payload_len = 0; |
2807 | tcp_hdr(skb)->check = | |
2808 | ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, | |
2809 | &ipv6_hdr(skb)->daddr, | |
2810 | 0, IPPROTO_TCP, 0); | |
2811 | adapter->hw_tso6_ctxt++; | |
2812 | } | |
2813 | ||
2814 | i = tx_ring->next_to_use; | |
2815 | ||
2816 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; | |
2817 | context_desc = IXGBE_TX_CTXTDESC_ADV(*tx_ring, i); | |
2818 | ||
2819 | /* VLAN MACLEN IPLEN */ | |
2820 | if (tx_flags & IXGBE_TX_FLAGS_VLAN) | |
2821 | vlan_macip_lens |= | |
2822 | (tx_flags & IXGBE_TX_FLAGS_VLAN_MASK); | |
2823 | vlan_macip_lens |= ((skb_network_offset(skb)) << | |
2824 | IXGBE_ADVTXD_MACLEN_SHIFT); | |
2825 | *hdr_len += skb_network_offset(skb); | |
2826 | vlan_macip_lens |= | |
2827 | (skb_transport_header(skb) - skb_network_header(skb)); | |
2828 | *hdr_len += | |
2829 | (skb_transport_header(skb) - skb_network_header(skb)); | |
2830 | context_desc->vlan_macip_lens = cpu_to_le32(vlan_macip_lens); | |
2831 | context_desc->seqnum_seed = 0; | |
2832 | ||
2833 | /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */ | |
2834 | type_tucmd_mlhl = (IXGBE_TXD_CMD_DEXT | | |
2835 | IXGBE_ADVTXD_DTYP_CTXT); | |
2836 | ||
2837 | if (skb->protocol == htons(ETH_P_IP)) | |
2838 | type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_IPV4; | |
2839 | type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_L4T_TCP; | |
2840 | context_desc->type_tucmd_mlhl = cpu_to_le32(type_tucmd_mlhl); | |
2841 | ||
2842 | /* MSS L4LEN IDX */ | |
2843 | mss_l4len_idx = | |
2844 | (skb_shinfo(skb)->gso_size << IXGBE_ADVTXD_MSS_SHIFT); | |
2845 | mss_l4len_idx |= (l4len << IXGBE_ADVTXD_L4LEN_SHIFT); | |
2846 | /* use index 1 for TSO */ | |
2847 | mss_l4len_idx |= (1 << IXGBE_ADVTXD_IDX_SHIFT); | |
2848 | context_desc->mss_l4len_idx = cpu_to_le32(mss_l4len_idx); | |
2849 | ||
2850 | tx_buffer_info->time_stamp = jiffies; | |
2851 | tx_buffer_info->next_to_watch = i; | |
2852 | ||
2853 | i++; | |
2854 | if (i == tx_ring->count) | |
2855 | i = 0; | |
2856 | tx_ring->next_to_use = i; | |
2857 | ||
2858 | return true; | |
2859 | } | |
2860 | ||
2861 | return false; | |
2862 | } | |
2863 | ||
2864 | static bool ixgbevf_tx_csum(struct ixgbevf_adapter *adapter, | |
2865 | struct ixgbevf_ring *tx_ring, | |
2866 | struct sk_buff *skb, u32 tx_flags) | |
2867 | { | |
2868 | struct ixgbe_adv_tx_context_desc *context_desc; | |
2869 | unsigned int i; | |
2870 | struct ixgbevf_tx_buffer *tx_buffer_info; | |
2871 | u32 vlan_macip_lens = 0, type_tucmd_mlhl = 0; | |
2872 | ||
2873 | if (skb->ip_summed == CHECKSUM_PARTIAL || | |
2874 | (tx_flags & IXGBE_TX_FLAGS_VLAN)) { | |
2875 | i = tx_ring->next_to_use; | |
2876 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; | |
2877 | context_desc = IXGBE_TX_CTXTDESC_ADV(*tx_ring, i); | |
2878 | ||
2879 | if (tx_flags & IXGBE_TX_FLAGS_VLAN) | |
2880 | vlan_macip_lens |= (tx_flags & | |
2881 | IXGBE_TX_FLAGS_VLAN_MASK); | |
2882 | vlan_macip_lens |= (skb_network_offset(skb) << | |
2883 | IXGBE_ADVTXD_MACLEN_SHIFT); | |
2884 | if (skb->ip_summed == CHECKSUM_PARTIAL) | |
2885 | vlan_macip_lens |= (skb_transport_header(skb) - | |
2886 | skb_network_header(skb)); | |
2887 | ||
2888 | context_desc->vlan_macip_lens = cpu_to_le32(vlan_macip_lens); | |
2889 | context_desc->seqnum_seed = 0; | |
2890 | ||
2891 | type_tucmd_mlhl |= (IXGBE_TXD_CMD_DEXT | | |
2892 | IXGBE_ADVTXD_DTYP_CTXT); | |
2893 | ||
2894 | if (skb->ip_summed == CHECKSUM_PARTIAL) { | |
2895 | switch (skb->protocol) { | |
2896 | case __constant_htons(ETH_P_IP): | |
2897 | type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_IPV4; | |
2898 | if (ip_hdr(skb)->protocol == IPPROTO_TCP) | |
2899 | type_tucmd_mlhl |= | |
2900 | IXGBE_ADVTXD_TUCMD_L4T_TCP; | |
2901 | break; | |
2902 | case __constant_htons(ETH_P_IPV6): | |
2903 | /* XXX what about other V6 headers?? */ | |
2904 | if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP) | |
2905 | type_tucmd_mlhl |= | |
2906 | IXGBE_ADVTXD_TUCMD_L4T_TCP; | |
2907 | break; | |
2908 | default: | |
2909 | if (unlikely(net_ratelimit())) { | |
2910 | printk(KERN_WARNING | |
2911 | "partial checksum but " | |
2912 | "proto=%x!\n", | |
2913 | skb->protocol); | |
2914 | } | |
2915 | break; | |
2916 | } | |
2917 | } | |
2918 | ||
2919 | context_desc->type_tucmd_mlhl = cpu_to_le32(type_tucmd_mlhl); | |
2920 | /* use index zero for tx checksum offload */ | |
2921 | context_desc->mss_l4len_idx = 0; | |
2922 | ||
2923 | tx_buffer_info->time_stamp = jiffies; | |
2924 | tx_buffer_info->next_to_watch = i; | |
2925 | ||
2926 | adapter->hw_csum_tx_good++; | |
2927 | i++; | |
2928 | if (i == tx_ring->count) | |
2929 | i = 0; | |
2930 | tx_ring->next_to_use = i; | |
2931 | ||
2932 | return true; | |
2933 | } | |
2934 | ||
2935 | return false; | |
2936 | } | |
2937 | ||
2938 | static int ixgbevf_tx_map(struct ixgbevf_adapter *adapter, | |
2939 | struct ixgbevf_ring *tx_ring, | |
2940 | struct sk_buff *skb, u32 tx_flags, | |
2941 | unsigned int first) | |
2942 | { | |
2943 | struct pci_dev *pdev = adapter->pdev; | |
2944 | struct ixgbevf_tx_buffer *tx_buffer_info; | |
2945 | unsigned int len; | |
2946 | unsigned int total = skb->len; | |
65deeed7 | 2947 | unsigned int offset = 0, size, count = 0; |
92915f71 GR |
2948 | unsigned int nr_frags = skb_shinfo(skb)->nr_frags; |
2949 | unsigned int f; | |
65deeed7 | 2950 | int i; |
92915f71 GR |
2951 | |
2952 | i = tx_ring->next_to_use; | |
2953 | ||
2954 | len = min(skb_headlen(skb), total); | |
2955 | while (len) { | |
2956 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; | |
2957 | size = min(len, (unsigned int)IXGBE_MAX_DATA_PER_TXD); | |
2958 | ||
2959 | tx_buffer_info->length = size; | |
2960 | tx_buffer_info->mapped_as_page = false; | |
2961 | tx_buffer_info->dma = pci_map_single(adapter->pdev, | |
2962 | skb->data + offset, | |
2963 | size, PCI_DMA_TODEVICE); | |
2964 | if (pci_dma_mapping_error(pdev, tx_buffer_info->dma)) | |
2965 | goto dma_error; | |
2966 | tx_buffer_info->time_stamp = jiffies; | |
2967 | tx_buffer_info->next_to_watch = i; | |
2968 | ||
2969 | len -= size; | |
2970 | total -= size; | |
2971 | offset += size; | |
2972 | count++; | |
2973 | i++; | |
2974 | if (i == tx_ring->count) | |
2975 | i = 0; | |
2976 | } | |
2977 | ||
2978 | for (f = 0; f < nr_frags; f++) { | |
2979 | struct skb_frag_struct *frag; | |
2980 | ||
2981 | frag = &skb_shinfo(skb)->frags[f]; | |
2982 | len = min((unsigned int)frag->size, total); | |
2983 | offset = frag->page_offset; | |
2984 | ||
2985 | while (len) { | |
2986 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; | |
2987 | size = min(len, (unsigned int)IXGBE_MAX_DATA_PER_TXD); | |
2988 | ||
2989 | tx_buffer_info->length = size; | |
2990 | tx_buffer_info->dma = pci_map_page(adapter->pdev, | |
2991 | frag->page, | |
2992 | offset, | |
2993 | size, | |
2994 | PCI_DMA_TODEVICE); | |
2995 | tx_buffer_info->mapped_as_page = true; | |
2996 | if (pci_dma_mapping_error(pdev, tx_buffer_info->dma)) | |
2997 | goto dma_error; | |
2998 | tx_buffer_info->time_stamp = jiffies; | |
2999 | tx_buffer_info->next_to_watch = i; | |
3000 | ||
3001 | len -= size; | |
3002 | total -= size; | |
3003 | offset += size; | |
3004 | count++; | |
3005 | i++; | |
3006 | if (i == tx_ring->count) | |
3007 | i = 0; | |
3008 | } | |
3009 | if (total == 0) | |
3010 | break; | |
3011 | } | |
3012 | ||
3013 | if (i == 0) | |
3014 | i = tx_ring->count - 1; | |
3015 | else | |
3016 | i = i - 1; | |
3017 | tx_ring->tx_buffer_info[i].skb = skb; | |
3018 | tx_ring->tx_buffer_info[first].next_to_watch = i; | |
3019 | ||
3020 | return count; | |
3021 | ||
3022 | dma_error: | |
3023 | dev_err(&pdev->dev, "TX DMA map failed\n"); | |
3024 | ||
3025 | /* clear timestamp and dma mappings for failed tx_buffer_info map */ | |
3026 | tx_buffer_info->dma = 0; | |
3027 | tx_buffer_info->time_stamp = 0; | |
3028 | tx_buffer_info->next_to_watch = 0; | |
3029 | count--; | |
3030 | ||
3031 | /* clear timestamp and dma mappings for remaining portion of packet */ | |
3032 | while (count >= 0) { | |
3033 | count--; | |
3034 | i--; | |
3035 | if (i < 0) | |
3036 | i += tx_ring->count; | |
3037 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; | |
3038 | ixgbevf_unmap_and_free_tx_resource(adapter, tx_buffer_info); | |
3039 | } | |
3040 | ||
3041 | return count; | |
3042 | } | |
3043 | ||
3044 | static void ixgbevf_tx_queue(struct ixgbevf_adapter *adapter, | |
3045 | struct ixgbevf_ring *tx_ring, int tx_flags, | |
3046 | int count, u32 paylen, u8 hdr_len) | |
3047 | { | |
3048 | union ixgbe_adv_tx_desc *tx_desc = NULL; | |
3049 | struct ixgbevf_tx_buffer *tx_buffer_info; | |
3050 | u32 olinfo_status = 0, cmd_type_len = 0; | |
3051 | unsigned int i; | |
3052 | ||
3053 | u32 txd_cmd = IXGBE_TXD_CMD_EOP | IXGBE_TXD_CMD_RS | IXGBE_TXD_CMD_IFCS; | |
3054 | ||
3055 | cmd_type_len |= IXGBE_ADVTXD_DTYP_DATA; | |
3056 | ||
3057 | cmd_type_len |= IXGBE_ADVTXD_DCMD_IFCS | IXGBE_ADVTXD_DCMD_DEXT; | |
3058 | ||
3059 | if (tx_flags & IXGBE_TX_FLAGS_VLAN) | |
3060 | cmd_type_len |= IXGBE_ADVTXD_DCMD_VLE; | |
3061 | ||
3062 | if (tx_flags & IXGBE_TX_FLAGS_TSO) { | |
3063 | cmd_type_len |= IXGBE_ADVTXD_DCMD_TSE; | |
3064 | ||
3065 | olinfo_status |= IXGBE_TXD_POPTS_TXSM << | |
3066 | IXGBE_ADVTXD_POPTS_SHIFT; | |
3067 | ||
3068 | /* use index 1 context for tso */ | |
3069 | olinfo_status |= (1 << IXGBE_ADVTXD_IDX_SHIFT); | |
3070 | if (tx_flags & IXGBE_TX_FLAGS_IPV4) | |
3071 | olinfo_status |= IXGBE_TXD_POPTS_IXSM << | |
3072 | IXGBE_ADVTXD_POPTS_SHIFT; | |
3073 | ||
3074 | } else if (tx_flags & IXGBE_TX_FLAGS_CSUM) | |
3075 | olinfo_status |= IXGBE_TXD_POPTS_TXSM << | |
3076 | IXGBE_ADVTXD_POPTS_SHIFT; | |
3077 | ||
3078 | olinfo_status |= ((paylen - hdr_len) << IXGBE_ADVTXD_PAYLEN_SHIFT); | |
3079 | ||
3080 | i = tx_ring->next_to_use; | |
3081 | while (count--) { | |
3082 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; | |
3083 | tx_desc = IXGBE_TX_DESC_ADV(*tx_ring, i); | |
3084 | tx_desc->read.buffer_addr = cpu_to_le64(tx_buffer_info->dma); | |
3085 | tx_desc->read.cmd_type_len = | |
3086 | cpu_to_le32(cmd_type_len | tx_buffer_info->length); | |
3087 | tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status); | |
3088 | i++; | |
3089 | if (i == tx_ring->count) | |
3090 | i = 0; | |
3091 | } | |
3092 | ||
3093 | tx_desc->read.cmd_type_len |= cpu_to_le32(txd_cmd); | |
3094 | ||
3095 | /* | |
3096 | * Force memory writes to complete before letting h/w | |
3097 | * know there are new descriptors to fetch. (Only | |
3098 | * applicable for weak-ordered memory model archs, | |
3099 | * such as IA-64). | |
3100 | */ | |
3101 | wmb(); | |
3102 | ||
3103 | tx_ring->next_to_use = i; | |
3104 | writel(i, adapter->hw.hw_addr + tx_ring->tail); | |
3105 | } | |
3106 | ||
3107 | static int __ixgbevf_maybe_stop_tx(struct net_device *netdev, | |
3108 | struct ixgbevf_ring *tx_ring, int size) | |
3109 | { | |
3110 | struct ixgbevf_adapter *adapter = netdev_priv(netdev); | |
3111 | ||
3112 | netif_stop_subqueue(netdev, tx_ring->queue_index); | |
3113 | /* Herbert's original patch had: | |
3114 | * smp_mb__after_netif_stop_queue(); | |
3115 | * but since that doesn't exist yet, just open code it. */ | |
3116 | smp_mb(); | |
3117 | ||
3118 | /* We need to check again in a case another CPU has just | |
3119 | * made room available. */ | |
3120 | if (likely(IXGBE_DESC_UNUSED(tx_ring) < size)) | |
3121 | return -EBUSY; | |
3122 | ||
3123 | /* A reprieve! - use start_queue because it doesn't call schedule */ | |
3124 | netif_start_subqueue(netdev, tx_ring->queue_index); | |
3125 | ++adapter->restart_queue; | |
3126 | return 0; | |
3127 | } | |
3128 | ||
3129 | static int ixgbevf_maybe_stop_tx(struct net_device *netdev, | |
3130 | struct ixgbevf_ring *tx_ring, int size) | |
3131 | { | |
3132 | if (likely(IXGBE_DESC_UNUSED(tx_ring) >= size)) | |
3133 | return 0; | |
3134 | return __ixgbevf_maybe_stop_tx(netdev, tx_ring, size); | |
3135 | } | |
3136 | ||
3137 | static int ixgbevf_xmit_frame(struct sk_buff *skb, struct net_device *netdev) | |
3138 | { | |
3139 | struct ixgbevf_adapter *adapter = netdev_priv(netdev); | |
3140 | struct ixgbevf_ring *tx_ring; | |
3141 | unsigned int first; | |
3142 | unsigned int tx_flags = 0; | |
3143 | u8 hdr_len = 0; | |
3144 | int r_idx = 0, tso; | |
3145 | int count = 0; | |
3146 | ||
3147 | unsigned int f; | |
3148 | ||
3149 | tx_ring = &adapter->tx_ring[r_idx]; | |
3150 | ||
3151 | if (adapter->vlgrp && vlan_tx_tag_present(skb)) { | |
3152 | tx_flags |= vlan_tx_tag_get(skb); | |
3153 | tx_flags <<= IXGBE_TX_FLAGS_VLAN_SHIFT; | |
3154 | tx_flags |= IXGBE_TX_FLAGS_VLAN; | |
3155 | } | |
3156 | ||
3157 | /* four things can cause us to need a context descriptor */ | |
3158 | if (skb_is_gso(skb) || | |
3159 | (skb->ip_summed == CHECKSUM_PARTIAL) || | |
3160 | (tx_flags & IXGBE_TX_FLAGS_VLAN)) | |
3161 | count++; | |
3162 | ||
3163 | count += TXD_USE_COUNT(skb_headlen(skb)); | |
3164 | for (f = 0; f < skb_shinfo(skb)->nr_frags; f++) | |
3165 | count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size); | |
3166 | ||
3167 | if (ixgbevf_maybe_stop_tx(netdev, tx_ring, count)) { | |
3168 | adapter->tx_busy++; | |
3169 | return NETDEV_TX_BUSY; | |
3170 | } | |
3171 | ||
3172 | first = tx_ring->next_to_use; | |
3173 | ||
3174 | if (skb->protocol == htons(ETH_P_IP)) | |
3175 | tx_flags |= IXGBE_TX_FLAGS_IPV4; | |
3176 | tso = ixgbevf_tso(adapter, tx_ring, skb, tx_flags, &hdr_len); | |
3177 | if (tso < 0) { | |
3178 | dev_kfree_skb_any(skb); | |
3179 | return NETDEV_TX_OK; | |
3180 | } | |
3181 | ||
3182 | if (tso) | |
3183 | tx_flags |= IXGBE_TX_FLAGS_TSO; | |
3184 | else if (ixgbevf_tx_csum(adapter, tx_ring, skb, tx_flags) && | |
3185 | (skb->ip_summed == CHECKSUM_PARTIAL)) | |
3186 | tx_flags |= IXGBE_TX_FLAGS_CSUM; | |
3187 | ||
3188 | ixgbevf_tx_queue(adapter, tx_ring, tx_flags, | |
3189 | ixgbevf_tx_map(adapter, tx_ring, skb, tx_flags, first), | |
3190 | skb->len, hdr_len); | |
3191 | ||
3192 | netdev->trans_start = jiffies; | |
3193 | ||
3194 | ixgbevf_maybe_stop_tx(netdev, tx_ring, DESC_NEEDED); | |
3195 | ||
3196 | return NETDEV_TX_OK; | |
3197 | } | |
3198 | ||
3199 | /** | |
3200 | * ixgbevf_get_stats - Get System Network Statistics | |
3201 | * @netdev: network interface device structure | |
3202 | * | |
3203 | * Returns the address of the device statistics structure. | |
3204 | * The statistics are actually updated from the timer callback. | |
3205 | **/ | |
3206 | static struct net_device_stats *ixgbevf_get_stats(struct net_device *netdev) | |
3207 | { | |
3208 | struct ixgbevf_adapter *adapter = netdev_priv(netdev); | |
3209 | ||
3210 | /* only return the current stats */ | |
3211 | return &adapter->net_stats; | |
3212 | } | |
3213 | ||
3214 | /** | |
3215 | * ixgbevf_set_mac - Change the Ethernet Address of the NIC | |
3216 | * @netdev: network interface device structure | |
3217 | * @p: pointer to an address structure | |
3218 | * | |
3219 | * Returns 0 on success, negative on failure | |
3220 | **/ | |
3221 | static int ixgbevf_set_mac(struct net_device *netdev, void *p) | |
3222 | { | |
3223 | struct ixgbevf_adapter *adapter = netdev_priv(netdev); | |
3224 | struct ixgbe_hw *hw = &adapter->hw; | |
3225 | struct sockaddr *addr = p; | |
3226 | ||
3227 | if (!is_valid_ether_addr(addr->sa_data)) | |
3228 | return -EADDRNOTAVAIL; | |
3229 | ||
3230 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
3231 | memcpy(hw->mac.addr, addr->sa_data, netdev->addr_len); | |
3232 | ||
3233 | if (hw->mac.ops.set_rar) | |
3234 | hw->mac.ops.set_rar(hw, 0, hw->mac.addr, 0); | |
3235 | ||
3236 | return 0; | |
3237 | } | |
3238 | ||
3239 | /** | |
3240 | * ixgbevf_change_mtu - Change the Maximum Transfer Unit | |
3241 | * @netdev: network interface device structure | |
3242 | * @new_mtu: new value for maximum frame size | |
3243 | * | |
3244 | * Returns 0 on success, negative on failure | |
3245 | **/ | |
3246 | static int ixgbevf_change_mtu(struct net_device *netdev, int new_mtu) | |
3247 | { | |
3248 | struct ixgbevf_adapter *adapter = netdev_priv(netdev); | |
3249 | int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN; | |
3250 | ||
3251 | /* MTU < 68 is an error and causes problems on some kernels */ | |
3252 | if ((new_mtu < 68) || (max_frame > MAXIMUM_ETHERNET_VLAN_SIZE)) | |
3253 | return -EINVAL; | |
3254 | ||
3255 | hw_dbg(&adapter->hw, "changing MTU from %d to %d\n", | |
3256 | netdev->mtu, new_mtu); | |
3257 | /* must set new MTU before calling down or up */ | |
3258 | netdev->mtu = new_mtu; | |
3259 | ||
3260 | if (netif_running(netdev)) | |
3261 | ixgbevf_reinit_locked(adapter); | |
3262 | ||
3263 | return 0; | |
3264 | } | |
3265 | ||
3266 | static void ixgbevf_shutdown(struct pci_dev *pdev) | |
3267 | { | |
3268 | struct net_device *netdev = pci_get_drvdata(pdev); | |
3269 | struct ixgbevf_adapter *adapter = netdev_priv(netdev); | |
3270 | ||
3271 | netif_device_detach(netdev); | |
3272 | ||
3273 | if (netif_running(netdev)) { | |
3274 | ixgbevf_down(adapter); | |
3275 | ixgbevf_free_irq(adapter); | |
3276 | ixgbevf_free_all_tx_resources(adapter); | |
3277 | ixgbevf_free_all_rx_resources(adapter); | |
3278 | } | |
3279 | ||
3280 | #ifdef CONFIG_PM | |
3281 | pci_save_state(pdev); | |
3282 | #endif | |
3283 | ||
3284 | pci_disable_device(pdev); | |
3285 | } | |
3286 | ||
92915f71 GR |
3287 | static const struct net_device_ops ixgbe_netdev_ops = { |
3288 | .ndo_open = &ixgbevf_open, | |
3289 | .ndo_stop = &ixgbevf_close, | |
3290 | .ndo_start_xmit = &ixgbevf_xmit_frame, | |
3291 | .ndo_get_stats = &ixgbevf_get_stats, | |
3292 | .ndo_set_rx_mode = &ixgbevf_set_rx_mode, | |
3293 | .ndo_set_multicast_list = &ixgbevf_set_rx_mode, | |
3294 | .ndo_validate_addr = eth_validate_addr, | |
3295 | .ndo_set_mac_address = &ixgbevf_set_mac, | |
3296 | .ndo_change_mtu = &ixgbevf_change_mtu, | |
3297 | .ndo_tx_timeout = &ixgbevf_tx_timeout, | |
3298 | .ndo_vlan_rx_register = &ixgbevf_vlan_rx_register, | |
3299 | .ndo_vlan_rx_add_vid = &ixgbevf_vlan_rx_add_vid, | |
3300 | .ndo_vlan_rx_kill_vid = &ixgbevf_vlan_rx_kill_vid, | |
3301 | }; | |
92915f71 GR |
3302 | |
3303 | static void ixgbevf_assign_netdev_ops(struct net_device *dev) | |
3304 | { | |
3305 | struct ixgbevf_adapter *adapter; | |
3306 | adapter = netdev_priv(dev); | |
92915f71 | 3307 | dev->netdev_ops = &ixgbe_netdev_ops; |
92915f71 GR |
3308 | ixgbevf_set_ethtool_ops(dev); |
3309 | dev->watchdog_timeo = 5 * HZ; | |
3310 | } | |
3311 | ||
3312 | /** | |
3313 | * ixgbevf_probe - Device Initialization Routine | |
3314 | * @pdev: PCI device information struct | |
3315 | * @ent: entry in ixgbevf_pci_tbl | |
3316 | * | |
3317 | * Returns 0 on success, negative on failure | |
3318 | * | |
3319 | * ixgbevf_probe initializes an adapter identified by a pci_dev structure. | |
3320 | * The OS initialization, configuring of the adapter private structure, | |
3321 | * and a hardware reset occur. | |
3322 | **/ | |
3323 | static int __devinit ixgbevf_probe(struct pci_dev *pdev, | |
3324 | const struct pci_device_id *ent) | |
3325 | { | |
3326 | struct net_device *netdev; | |
3327 | struct ixgbevf_adapter *adapter = NULL; | |
3328 | struct ixgbe_hw *hw = NULL; | |
3329 | const struct ixgbevf_info *ii = ixgbevf_info_tbl[ent->driver_data]; | |
3330 | static int cards_found; | |
3331 | int err, pci_using_dac; | |
3332 | ||
3333 | err = pci_enable_device(pdev); | |
3334 | if (err) | |
3335 | return err; | |
3336 | ||
3337 | if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) && | |
3338 | !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64))) { | |
3339 | pci_using_dac = 1; | |
3340 | } else { | |
3341 | err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); | |
3342 | if (err) { | |
3343 | err = pci_set_consistent_dma_mask(pdev, | |
3344 | DMA_BIT_MASK(32)); | |
3345 | if (err) { | |
3346 | dev_err(&pdev->dev, "No usable DMA " | |
3347 | "configuration, aborting\n"); | |
3348 | goto err_dma; | |
3349 | } | |
3350 | } | |
3351 | pci_using_dac = 0; | |
3352 | } | |
3353 | ||
3354 | err = pci_request_regions(pdev, ixgbevf_driver_name); | |
3355 | if (err) { | |
3356 | dev_err(&pdev->dev, "pci_request_regions failed 0x%x\n", err); | |
3357 | goto err_pci_reg; | |
3358 | } | |
3359 | ||
3360 | pci_set_master(pdev); | |
3361 | ||
3362 | #ifdef HAVE_TX_MQ | |
3363 | netdev = alloc_etherdev_mq(sizeof(struct ixgbevf_adapter), | |
3364 | MAX_TX_QUEUES); | |
3365 | #else | |
3366 | netdev = alloc_etherdev(sizeof(struct ixgbevf_adapter)); | |
3367 | #endif | |
3368 | if (!netdev) { | |
3369 | err = -ENOMEM; | |
3370 | goto err_alloc_etherdev; | |
3371 | } | |
3372 | ||
3373 | SET_NETDEV_DEV(netdev, &pdev->dev); | |
3374 | ||
3375 | pci_set_drvdata(pdev, netdev); | |
3376 | adapter = netdev_priv(netdev); | |
3377 | ||
3378 | adapter->netdev = netdev; | |
3379 | adapter->pdev = pdev; | |
3380 | hw = &adapter->hw; | |
3381 | hw->back = adapter; | |
3382 | adapter->msg_enable = (1 << DEFAULT_DEBUG_LEVEL_SHIFT) - 1; | |
3383 | ||
3384 | /* | |
3385 | * call save state here in standalone driver because it relies on | |
3386 | * adapter struct to exist, and needs to call netdev_priv | |
3387 | */ | |
3388 | pci_save_state(pdev); | |
3389 | ||
3390 | hw->hw_addr = ioremap(pci_resource_start(pdev, 0), | |
3391 | pci_resource_len(pdev, 0)); | |
3392 | if (!hw->hw_addr) { | |
3393 | err = -EIO; | |
3394 | goto err_ioremap; | |
3395 | } | |
3396 | ||
3397 | ixgbevf_assign_netdev_ops(netdev); | |
3398 | ||
3399 | adapter->bd_number = cards_found; | |
3400 | ||
3401 | /* Setup hw api */ | |
3402 | memcpy(&hw->mac.ops, ii->mac_ops, sizeof(hw->mac.ops)); | |
3403 | hw->mac.type = ii->mac; | |
3404 | ||
3405 | memcpy(&hw->mbx.ops, &ixgbevf_mbx_ops, | |
3406 | sizeof(struct ixgbe_mac_operations)); | |
3407 | ||
3408 | adapter->flags &= ~IXGBE_FLAG_RX_PS_CAPABLE; | |
3409 | adapter->flags &= ~IXGBE_FLAG_RX_PS_ENABLED; | |
3410 | adapter->flags |= IXGBE_FLAG_RX_1BUF_CAPABLE; | |
3411 | ||
3412 | /* setup the private structure */ | |
3413 | err = ixgbevf_sw_init(adapter); | |
3414 | ||
92915f71 GR |
3415 | #ifdef MAX_SKB_FRAGS |
3416 | netdev->features = NETIF_F_SG | | |
3417 | NETIF_F_IP_CSUM | | |
3418 | NETIF_F_HW_VLAN_TX | | |
3419 | NETIF_F_HW_VLAN_RX | | |
3420 | NETIF_F_HW_VLAN_FILTER; | |
3421 | ||
3422 | netdev->features |= NETIF_F_IPV6_CSUM; | |
3423 | netdev->features |= NETIF_F_TSO; | |
3424 | netdev->features |= NETIF_F_TSO6; | |
3425 | netdev->vlan_features |= NETIF_F_TSO; | |
3426 | netdev->vlan_features |= NETIF_F_TSO6; | |
3427 | netdev->vlan_features |= NETIF_F_IP_CSUM; | |
3428 | netdev->vlan_features |= NETIF_F_SG; | |
3429 | ||
3430 | if (pci_using_dac) | |
3431 | netdev->features |= NETIF_F_HIGHDMA; | |
3432 | ||
3433 | #endif /* MAX_SKB_FRAGS */ | |
3434 | ||
3435 | /* The HW MAC address was set and/or determined in sw_init */ | |
3436 | memcpy(netdev->dev_addr, adapter->hw.mac.addr, netdev->addr_len); | |
3437 | memcpy(netdev->perm_addr, adapter->hw.mac.addr, netdev->addr_len); | |
3438 | ||
3439 | if (!is_valid_ether_addr(netdev->dev_addr)) { | |
3440 | printk(KERN_ERR "invalid MAC address\n"); | |
3441 | err = -EIO; | |
3442 | goto err_sw_init; | |
3443 | } | |
3444 | ||
3445 | init_timer(&adapter->watchdog_timer); | |
3446 | adapter->watchdog_timer.function = &ixgbevf_watchdog; | |
3447 | adapter->watchdog_timer.data = (unsigned long)adapter; | |
3448 | ||
3449 | INIT_WORK(&adapter->reset_task, ixgbevf_reset_task); | |
3450 | INIT_WORK(&adapter->watchdog_task, ixgbevf_watchdog_task); | |
3451 | ||
3452 | err = ixgbevf_init_interrupt_scheme(adapter); | |
3453 | if (err) | |
3454 | goto err_sw_init; | |
3455 | ||
3456 | /* pick up the PCI bus settings for reporting later */ | |
3457 | if (hw->mac.ops.get_bus_info) | |
3458 | hw->mac.ops.get_bus_info(hw); | |
3459 | ||
3460 | ||
3461 | netif_carrier_off(netdev); | |
3462 | netif_tx_stop_all_queues(netdev); | |
3463 | ||
3464 | strcpy(netdev->name, "eth%d"); | |
3465 | ||
3466 | err = register_netdev(netdev); | |
3467 | if (err) | |
3468 | goto err_register; | |
3469 | ||
3470 | adapter->netdev_registered = true; | |
3471 | ||
33bd9f60 GR |
3472 | ixgbevf_init_last_counter_stats(adapter); |
3473 | ||
92915f71 GR |
3474 | /* print the MAC address */ |
3475 | hw_dbg(hw, "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x\n", | |
3476 | netdev->dev_addr[0], | |
3477 | netdev->dev_addr[1], | |
3478 | netdev->dev_addr[2], | |
3479 | netdev->dev_addr[3], | |
3480 | netdev->dev_addr[4], | |
3481 | netdev->dev_addr[5]); | |
3482 | ||
3483 | hw_dbg(hw, "MAC: %d\n", hw->mac.type); | |
3484 | ||
3485 | hw_dbg(hw, "LRO is disabled \n"); | |
3486 | ||
3487 | hw_dbg(hw, "Intel(R) 82599 Virtual Function\n"); | |
3488 | cards_found++; | |
3489 | return 0; | |
3490 | ||
3491 | err_register: | |
3492 | err_sw_init: | |
3493 | ixgbevf_reset_interrupt_capability(adapter); | |
3494 | iounmap(hw->hw_addr); | |
3495 | err_ioremap: | |
3496 | free_netdev(netdev); | |
3497 | err_alloc_etherdev: | |
3498 | pci_release_regions(pdev); | |
3499 | err_pci_reg: | |
3500 | err_dma: | |
3501 | pci_disable_device(pdev); | |
3502 | return err; | |
3503 | } | |
3504 | ||
3505 | /** | |
3506 | * ixgbevf_remove - Device Removal Routine | |
3507 | * @pdev: PCI device information struct | |
3508 | * | |
3509 | * ixgbevf_remove is called by the PCI subsystem to alert the driver | |
3510 | * that it should release a PCI device. The could be caused by a | |
3511 | * Hot-Plug event, or because the driver is going to be removed from | |
3512 | * memory. | |
3513 | **/ | |
3514 | static void __devexit ixgbevf_remove(struct pci_dev *pdev) | |
3515 | { | |
3516 | struct net_device *netdev = pci_get_drvdata(pdev); | |
3517 | struct ixgbevf_adapter *adapter = netdev_priv(netdev); | |
3518 | ||
3519 | set_bit(__IXGBEVF_DOWN, &adapter->state); | |
3520 | ||
3521 | del_timer_sync(&adapter->watchdog_timer); | |
3522 | ||
3523 | cancel_work_sync(&adapter->watchdog_task); | |
3524 | ||
3525 | flush_scheduled_work(); | |
3526 | ||
3527 | if (adapter->netdev_registered) { | |
3528 | unregister_netdev(netdev); | |
3529 | adapter->netdev_registered = false; | |
3530 | } | |
3531 | ||
3532 | ixgbevf_reset_interrupt_capability(adapter); | |
3533 | ||
3534 | iounmap(adapter->hw.hw_addr); | |
3535 | pci_release_regions(pdev); | |
3536 | ||
3537 | hw_dbg(&adapter->hw, "Remove complete\n"); | |
3538 | ||
3539 | kfree(adapter->tx_ring); | |
3540 | kfree(adapter->rx_ring); | |
3541 | ||
3542 | free_netdev(netdev); | |
3543 | ||
3544 | pci_disable_device(pdev); | |
3545 | } | |
3546 | ||
3547 | static struct pci_driver ixgbevf_driver = { | |
3548 | .name = ixgbevf_driver_name, | |
3549 | .id_table = ixgbevf_pci_tbl, | |
3550 | .probe = ixgbevf_probe, | |
3551 | .remove = __devexit_p(ixgbevf_remove), | |
3552 | .shutdown = ixgbevf_shutdown, | |
3553 | }; | |
3554 | ||
3555 | /** | |
3556 | * ixgbe_init_module - Driver Registration Routine | |
3557 | * | |
3558 | * ixgbe_init_module is the first routine called when the driver is | |
3559 | * loaded. All it does is register with the PCI subsystem. | |
3560 | **/ | |
3561 | static int __init ixgbevf_init_module(void) | |
3562 | { | |
3563 | int ret; | |
3564 | printk(KERN_INFO "ixgbevf: %s - version %s\n", ixgbevf_driver_string, | |
3565 | ixgbevf_driver_version); | |
3566 | ||
3567 | printk(KERN_INFO "%s\n", ixgbevf_copyright); | |
3568 | ||
3569 | ret = pci_register_driver(&ixgbevf_driver); | |
3570 | return ret; | |
3571 | } | |
3572 | ||
3573 | module_init(ixgbevf_init_module); | |
3574 | ||
3575 | /** | |
3576 | * ixgbe_exit_module - Driver Exit Cleanup Routine | |
3577 | * | |
3578 | * ixgbe_exit_module is called just before the driver is removed | |
3579 | * from memory. | |
3580 | **/ | |
3581 | static void __exit ixgbevf_exit_module(void) | |
3582 | { | |
3583 | pci_unregister_driver(&ixgbevf_driver); | |
3584 | } | |
3585 | ||
3586 | #ifdef DEBUG | |
3587 | /** | |
3588 | * ixgbe_get_hw_dev_name - return device name string | |
3589 | * used by hardware layer to print debugging information | |
3590 | **/ | |
3591 | char *ixgbevf_get_hw_dev_name(struct ixgbe_hw *hw) | |
3592 | { | |
3593 | struct ixgbevf_adapter *adapter = hw->back; | |
3594 | return adapter->netdev->name; | |
3595 | } | |
3596 | ||
3597 | #endif | |
3598 | module_exit(ixgbevf_exit_module); | |
3599 | ||
3600 | /* ixgbevf_main.c */ |