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9a799d71 AK |
1 | /******************************************************************************* |
2 | ||
3 | Intel 10 Gigabit PCI Express Linux driver | |
4 | Copyright(c) 1999 - 2007 Intel Corporation. | |
5 | ||
6 | This program is free software; you can redistribute it and/or modify it | |
7 | under the terms and conditions of the GNU General Public License, | |
8 | version 2, as published by the Free Software Foundation. | |
9 | ||
10 | This program is distributed in the hope it will be useful, but WITHOUT | |
11 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
12 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
13 | more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License along with | |
16 | this program; if not, write to the Free Software Foundation, Inc., | |
17 | 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. | |
18 | ||
19 | The full GNU General Public License is included in this distribution in | |
20 | the file called "COPYING". | |
21 | ||
22 | Contact Information: | |
23 | Linux NICS <linux.nics@intel.com> | |
24 | e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> | |
25 | Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 | |
26 | ||
27 | *******************************************************************************/ | |
28 | ||
29 | #include <linux/types.h> | |
30 | #include <linux/module.h> | |
31 | #include <linux/pci.h> | |
32 | #include <linux/netdevice.h> | |
33 | #include <linux/vmalloc.h> | |
34 | #include <linux/string.h> | |
35 | #include <linux/in.h> | |
36 | #include <linux/ip.h> | |
37 | #include <linux/tcp.h> | |
38 | #include <linux/ipv6.h> | |
39 | #include <net/checksum.h> | |
40 | #include <net/ip6_checksum.h> | |
41 | #include <linux/ethtool.h> | |
42 | #include <linux/if_vlan.h> | |
43 | ||
44 | #include "ixgbe.h" | |
45 | #include "ixgbe_common.h" | |
46 | ||
47 | char ixgbe_driver_name[] = "ixgbe"; | |
9c8eb720 SH |
48 | static const char ixgbe_driver_string[] = |
49 | "Intel(R) 10 Gigabit PCI Express Network Driver"; | |
9a799d71 AK |
50 | |
51 | #define DRV_VERSION "1.1.18" | |
9c8eb720 SH |
52 | const char ixgbe_driver_version[] = DRV_VERSION; |
53 | static const char ixgbe_copyright[] = | |
54 | "Copyright (c) 1999-2007 Intel Corporation."; | |
9a799d71 AK |
55 | |
56 | static const struct ixgbe_info *ixgbe_info_tbl[] = { | |
3957d63d | 57 | [board_82598] = &ixgbe_82598_info, |
9a799d71 AK |
58 | }; |
59 | ||
60 | /* ixgbe_pci_tbl - PCI Device ID Table | |
61 | * | |
62 | * Wildcard entries (PCI_ANY_ID) should come last | |
63 | * Last entry must be all 0s | |
64 | * | |
65 | * { Vendor ID, Device ID, SubVendor ID, SubDevice ID, | |
66 | * Class, Class Mask, private data (not used) } | |
67 | */ | |
68 | static struct pci_device_id ixgbe_pci_tbl[] = { | |
69 | {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AF_DUAL_PORT), | |
3957d63d | 70 | board_82598 }, |
9a799d71 | 71 | {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AF_SINGLE_PORT), |
3957d63d | 72 | board_82598 }, |
9a799d71 | 73 | {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AT_DUAL_PORT), |
3957d63d | 74 | board_82598 }, |
9a799d71 | 75 | {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_CX4), |
3957d63d | 76 | board_82598 }, |
9a799d71 AK |
77 | |
78 | /* required last entry */ | |
79 | {0, } | |
80 | }; | |
81 | MODULE_DEVICE_TABLE(pci, ixgbe_pci_tbl); | |
82 | ||
83 | MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>"); | |
84 | MODULE_DESCRIPTION("Intel(R) 10 Gigabit PCI Express Network Driver"); | |
85 | MODULE_LICENSE("GPL"); | |
86 | MODULE_VERSION(DRV_VERSION); | |
87 | ||
88 | #define DEFAULT_DEBUG_LEVEL_SHIFT 3 | |
89 | ||
5eba3699 AV |
90 | static void ixgbe_release_hw_control(struct ixgbe_adapter *adapter) |
91 | { | |
92 | u32 ctrl_ext; | |
93 | ||
94 | /* Let firmware take over control of h/w */ | |
95 | ctrl_ext = IXGBE_READ_REG(&adapter->hw, IXGBE_CTRL_EXT); | |
96 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_CTRL_EXT, | |
97 | ctrl_ext & ~IXGBE_CTRL_EXT_DRV_LOAD); | |
98 | } | |
99 | ||
100 | static void ixgbe_get_hw_control(struct ixgbe_adapter *adapter) | |
101 | { | |
102 | u32 ctrl_ext; | |
103 | ||
104 | /* Let firmware know the driver has taken over */ | |
105 | ctrl_ext = IXGBE_READ_REG(&adapter->hw, IXGBE_CTRL_EXT); | |
106 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_CTRL_EXT, | |
107 | ctrl_ext | IXGBE_CTRL_EXT_DRV_LOAD); | |
108 | } | |
9a799d71 AK |
109 | |
110 | #ifdef DEBUG | |
111 | /** | |
112 | * ixgbe_get_hw_dev_name - return device name string | |
113 | * used by hardware layer to print debugging information | |
114 | **/ | |
115 | char *ixgbe_get_hw_dev_name(struct ixgbe_hw *hw) | |
116 | { | |
117 | struct ixgbe_adapter *adapter = hw->back; | |
118 | struct net_device *netdev = adapter->netdev; | |
119 | return netdev->name; | |
120 | } | |
121 | #endif | |
122 | ||
123 | static void ixgbe_set_ivar(struct ixgbe_adapter *adapter, u16 int_alloc_entry, | |
124 | u8 msix_vector) | |
125 | { | |
126 | u32 ivar, index; | |
127 | ||
128 | msix_vector |= IXGBE_IVAR_ALLOC_VAL; | |
129 | index = (int_alloc_entry >> 2) & 0x1F; | |
130 | ivar = IXGBE_READ_REG(&adapter->hw, IXGBE_IVAR(index)); | |
131 | ivar &= ~(0xFF << (8 * (int_alloc_entry & 0x3))); | |
132 | ivar |= (msix_vector << (8 * (int_alloc_entry & 0x3))); | |
133 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_IVAR(index), ivar); | |
134 | } | |
135 | ||
136 | static void ixgbe_unmap_and_free_tx_resource(struct ixgbe_adapter *adapter, | |
137 | struct ixgbe_tx_buffer | |
138 | *tx_buffer_info) | |
139 | { | |
140 | if (tx_buffer_info->dma) { | |
141 | pci_unmap_page(adapter->pdev, | |
142 | tx_buffer_info->dma, | |
143 | tx_buffer_info->length, PCI_DMA_TODEVICE); | |
144 | tx_buffer_info->dma = 0; | |
145 | } | |
146 | if (tx_buffer_info->skb) { | |
147 | dev_kfree_skb_any(tx_buffer_info->skb); | |
148 | tx_buffer_info->skb = NULL; | |
149 | } | |
150 | /* tx_buffer_info must be completely set up in the transmit path */ | |
151 | } | |
152 | ||
153 | static inline bool ixgbe_check_tx_hang(struct ixgbe_adapter *adapter, | |
154 | struct ixgbe_ring *tx_ring, | |
155 | unsigned int eop, | |
156 | union ixgbe_adv_tx_desc *eop_desc) | |
157 | { | |
158 | /* Detect a transmit hang in hardware, this serializes the | |
159 | * check with the clearing of time_stamp and movement of i */ | |
160 | adapter->detect_tx_hung = false; | |
161 | if (tx_ring->tx_buffer_info[eop].dma && | |
162 | time_after(jiffies, tx_ring->tx_buffer_info[eop].time_stamp + HZ) && | |
163 | !(IXGBE_READ_REG(&adapter->hw, IXGBE_TFCS) & IXGBE_TFCS_TXOFF)) { | |
164 | /* detected Tx unit hang */ | |
165 | DPRINTK(DRV, ERR, "Detected Tx Unit Hang\n" | |
166 | " TDH <%x>\n" | |
167 | " TDT <%x>\n" | |
168 | " next_to_use <%x>\n" | |
169 | " next_to_clean <%x>\n" | |
170 | "tx_buffer_info[next_to_clean]\n" | |
171 | " time_stamp <%lx>\n" | |
172 | " next_to_watch <%x>\n" | |
173 | " jiffies <%lx>\n" | |
174 | " next_to_watch.status <%x>\n", | |
175 | readl(adapter->hw.hw_addr + tx_ring->head), | |
176 | readl(adapter->hw.hw_addr + tx_ring->tail), | |
177 | tx_ring->next_to_use, | |
178 | tx_ring->next_to_clean, | |
179 | tx_ring->tx_buffer_info[eop].time_stamp, | |
180 | eop, jiffies, eop_desc->wb.status); | |
181 | return true; | |
182 | } | |
183 | ||
184 | return false; | |
185 | } | |
186 | ||
e092be60 AV |
187 | #define IXGBE_MAX_TXD_PWR 14 |
188 | #define IXGBE_MAX_DATA_PER_TXD (1 << IXGBE_MAX_TXD_PWR) | |
189 | ||
190 | /* Tx Descriptors needed, worst case */ | |
191 | #define TXD_USE_COUNT(S) (((S) >> IXGBE_MAX_TXD_PWR) + \ | |
192 | (((S) & (IXGBE_MAX_DATA_PER_TXD - 1)) ? 1 : 0)) | |
193 | #define DESC_NEEDED (TXD_USE_COUNT(IXGBE_MAX_DATA_PER_TXD) /* skb->data */ + \ | |
194 | MAX_SKB_FRAGS * TXD_USE_COUNT(PAGE_SIZE) + 1) /* for context */ | |
195 | ||
9a799d71 AK |
196 | /** |
197 | * ixgbe_clean_tx_irq - Reclaim resources after transmit completes | |
198 | * @adapter: board private structure | |
199 | **/ | |
200 | static bool ixgbe_clean_tx_irq(struct ixgbe_adapter *adapter, | |
201 | struct ixgbe_ring *tx_ring) | |
202 | { | |
203 | struct net_device *netdev = adapter->netdev; | |
204 | union ixgbe_adv_tx_desc *tx_desc, *eop_desc; | |
205 | struct ixgbe_tx_buffer *tx_buffer_info; | |
206 | unsigned int i, eop; | |
207 | bool cleaned = false; | |
e092be60 | 208 | unsigned int total_tx_bytes = 0, total_tx_packets = 0; |
9a799d71 AK |
209 | |
210 | i = tx_ring->next_to_clean; | |
211 | eop = tx_ring->tx_buffer_info[i].next_to_watch; | |
212 | eop_desc = IXGBE_TX_DESC_ADV(*tx_ring, eop); | |
213 | while (eop_desc->wb.status & cpu_to_le32(IXGBE_TXD_STAT_DD)) { | |
e092be60 AV |
214 | cleaned = false; |
215 | while (!cleaned) { | |
9a799d71 AK |
216 | tx_desc = IXGBE_TX_DESC_ADV(*tx_ring, i); |
217 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; | |
218 | cleaned = (i == eop); | |
219 | ||
220 | tx_ring->stats.bytes += tx_buffer_info->length; | |
e092be60 AV |
221 | if (cleaned) { |
222 | struct sk_buff *skb = tx_buffer_info->skb; | |
e092be60 AV |
223 | unsigned int segs, bytecount; |
224 | segs = skb_shinfo(skb)->gso_segs ?: 1; | |
225 | /* multiply data chunks by size of headers */ | |
226 | bytecount = ((segs - 1) * skb_headlen(skb)) + | |
227 | skb->len; | |
228 | total_tx_packets += segs; | |
229 | total_tx_bytes += bytecount; | |
e092be60 | 230 | } |
9a799d71 AK |
231 | ixgbe_unmap_and_free_tx_resource(adapter, |
232 | tx_buffer_info); | |
233 | tx_desc->wb.status = 0; | |
234 | ||
235 | i++; | |
236 | if (i == tx_ring->count) | |
237 | i = 0; | |
238 | } | |
239 | ||
240 | tx_ring->stats.packets++; | |
241 | ||
242 | eop = tx_ring->tx_buffer_info[i].next_to_watch; | |
243 | eop_desc = IXGBE_TX_DESC_ADV(*tx_ring, eop); | |
244 | ||
245 | /* weight of a sort for tx, avoid endless transmit cleanup */ | |
e092be60 | 246 | if (total_tx_packets >= tx_ring->work_limit) |
9a799d71 AK |
247 | break; |
248 | } | |
249 | ||
250 | tx_ring->next_to_clean = i; | |
251 | ||
e092be60 AV |
252 | #define TX_WAKE_THRESHOLD (DESC_NEEDED * 2) |
253 | if (total_tx_packets && netif_carrier_ok(netdev) && | |
254 | (IXGBE_DESC_UNUSED(tx_ring) >= TX_WAKE_THRESHOLD)) { | |
255 | /* Make sure that anybody stopping the queue after this | |
256 | * sees the new next_to_clean. | |
257 | */ | |
258 | smp_mb(); | |
259 | if (netif_queue_stopped(netdev) && | |
260 | !test_bit(__IXGBE_DOWN, &adapter->state)) { | |
261 | netif_wake_queue(netdev); | |
262 | adapter->restart_queue++; | |
263 | } | |
264 | } | |
9a799d71 AK |
265 | |
266 | if (adapter->detect_tx_hung) | |
267 | if (ixgbe_check_tx_hang(adapter, tx_ring, eop, eop_desc)) | |
268 | netif_stop_queue(netdev); | |
269 | ||
e092be60 | 270 | if (total_tx_packets >= tx_ring->work_limit) |
9a799d71 AK |
271 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS, tx_ring->eims_value); |
272 | ||
d2f4fbe2 AV |
273 | adapter->net_stats.tx_bytes += total_tx_bytes; |
274 | adapter->net_stats.tx_packets += total_tx_packets; | |
e092be60 | 275 | cleaned = total_tx_packets ? true : false; |
9a799d71 AK |
276 | return cleaned; |
277 | } | |
278 | ||
279 | /** | |
280 | * ixgbe_receive_skb - Send a completed packet up the stack | |
281 | * @adapter: board private structure | |
282 | * @skb: packet to send up | |
283 | * @is_vlan: packet has a VLAN tag | |
284 | * @tag: VLAN tag from descriptor | |
285 | **/ | |
286 | static void ixgbe_receive_skb(struct ixgbe_adapter *adapter, | |
287 | struct sk_buff *skb, bool is_vlan, | |
288 | u16 tag) | |
289 | { | |
290 | if (!(adapter->flags & IXGBE_FLAG_IN_NETPOLL)) { | |
291 | if (adapter->vlgrp && is_vlan) | |
292 | vlan_hwaccel_receive_skb(skb, adapter->vlgrp, tag); | |
293 | else | |
294 | netif_receive_skb(skb); | |
295 | } else { | |
296 | ||
297 | if (adapter->vlgrp && is_vlan) | |
298 | vlan_hwaccel_rx(skb, adapter->vlgrp, tag); | |
299 | else | |
300 | netif_rx(skb); | |
301 | } | |
302 | } | |
303 | ||
e59bd25d AV |
304 | /** |
305 | * ixgbe_rx_checksum - indicate in skb if hw indicated a good cksum | |
306 | * @adapter: address of board private structure | |
307 | * @status_err: hardware indication of status of receive | |
308 | * @skb: skb currently being received and modified | |
309 | **/ | |
9a799d71 AK |
310 | static inline void ixgbe_rx_checksum(struct ixgbe_adapter *adapter, |
311 | u32 status_err, | |
312 | struct sk_buff *skb) | |
313 | { | |
314 | skb->ip_summed = CHECKSUM_NONE; | |
315 | ||
e59bd25d | 316 | /* Ignore Checksum bit is set, or rx csum disabled */ |
9a799d71 | 317 | if ((status_err & IXGBE_RXD_STAT_IXSM) || |
e59bd25d | 318 | !(adapter->flags & IXGBE_FLAG_RX_CSUM_ENABLED)) |
9a799d71 | 319 | return; |
e59bd25d AV |
320 | |
321 | /* if IP and error */ | |
322 | if ((status_err & IXGBE_RXD_STAT_IPCS) && | |
323 | (status_err & IXGBE_RXDADV_ERR_IPE)) { | |
9a799d71 AK |
324 | adapter->hw_csum_rx_error++; |
325 | return; | |
326 | } | |
e59bd25d AV |
327 | |
328 | if (!(status_err & IXGBE_RXD_STAT_L4CS)) | |
329 | return; | |
330 | ||
331 | if (status_err & IXGBE_RXDADV_ERR_TCPE) { | |
332 | adapter->hw_csum_rx_error++; | |
333 | return; | |
334 | } | |
335 | ||
9a799d71 | 336 | /* It must be a TCP or UDP packet with a valid checksum */ |
e59bd25d | 337 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
9a799d71 AK |
338 | adapter->hw_csum_rx_good++; |
339 | } | |
340 | ||
341 | /** | |
342 | * ixgbe_alloc_rx_buffers - Replace used receive buffers; packet split | |
343 | * @adapter: address of board private structure | |
344 | **/ | |
345 | static void ixgbe_alloc_rx_buffers(struct ixgbe_adapter *adapter, | |
346 | struct ixgbe_ring *rx_ring, | |
347 | int cleaned_count) | |
348 | { | |
349 | struct net_device *netdev = adapter->netdev; | |
350 | struct pci_dev *pdev = adapter->pdev; | |
351 | union ixgbe_adv_rx_desc *rx_desc; | |
352 | struct ixgbe_rx_buffer *rx_buffer_info; | |
353 | struct sk_buff *skb; | |
354 | unsigned int i; | |
355 | unsigned int bufsz = adapter->rx_buf_len + NET_IP_ALIGN; | |
356 | ||
357 | i = rx_ring->next_to_use; | |
358 | rx_buffer_info = &rx_ring->rx_buffer_info[i]; | |
359 | ||
360 | while (cleaned_count--) { | |
361 | rx_desc = IXGBE_RX_DESC_ADV(*rx_ring, i); | |
362 | ||
363 | if (!rx_buffer_info->page && | |
364 | (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED)) { | |
365 | rx_buffer_info->page = alloc_page(GFP_ATOMIC); | |
366 | if (!rx_buffer_info->page) { | |
367 | adapter->alloc_rx_page_failed++; | |
368 | goto no_buffers; | |
369 | } | |
370 | rx_buffer_info->page_dma = | |
371 | pci_map_page(pdev, rx_buffer_info->page, | |
372 | 0, PAGE_SIZE, PCI_DMA_FROMDEVICE); | |
373 | } | |
374 | ||
375 | if (!rx_buffer_info->skb) { | |
376 | skb = netdev_alloc_skb(netdev, bufsz); | |
377 | ||
378 | if (!skb) { | |
379 | adapter->alloc_rx_buff_failed++; | |
380 | goto no_buffers; | |
381 | } | |
382 | ||
383 | /* | |
384 | * Make buffer alignment 2 beyond a 16 byte boundary | |
385 | * this will result in a 16 byte aligned IP header after | |
386 | * the 14 byte MAC header is removed | |
387 | */ | |
388 | skb_reserve(skb, NET_IP_ALIGN); | |
389 | ||
390 | rx_buffer_info->skb = skb; | |
391 | rx_buffer_info->dma = pci_map_single(pdev, skb->data, | |
392 | bufsz, | |
393 | PCI_DMA_FROMDEVICE); | |
394 | } | |
395 | /* Refresh the desc even if buffer_addrs didn't change because | |
396 | * each write-back erases this info. */ | |
397 | if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) { | |
398 | rx_desc->read.pkt_addr = | |
399 | cpu_to_le64(rx_buffer_info->page_dma); | |
400 | rx_desc->read.hdr_addr = | |
401 | cpu_to_le64(rx_buffer_info->dma); | |
402 | } else { | |
403 | rx_desc->read.pkt_addr = | |
404 | cpu_to_le64(rx_buffer_info->dma); | |
405 | } | |
406 | ||
407 | i++; | |
408 | if (i == rx_ring->count) | |
409 | i = 0; | |
410 | rx_buffer_info = &rx_ring->rx_buffer_info[i]; | |
411 | } | |
412 | no_buffers: | |
413 | if (rx_ring->next_to_use != i) { | |
414 | rx_ring->next_to_use = i; | |
415 | if (i-- == 0) | |
416 | i = (rx_ring->count - 1); | |
417 | ||
418 | /* | |
419 | * Force memory writes to complete before letting h/w | |
420 | * know there are new descriptors to fetch. (Only | |
421 | * applicable for weak-ordered memory model archs, | |
422 | * such as IA-64). | |
423 | */ | |
424 | wmb(); | |
425 | writel(i, adapter->hw.hw_addr + rx_ring->tail); | |
426 | } | |
427 | } | |
428 | ||
429 | static bool ixgbe_clean_rx_irq(struct ixgbe_adapter *adapter, | |
430 | struct ixgbe_ring *rx_ring, | |
431 | int *work_done, int work_to_do) | |
432 | { | |
433 | struct net_device *netdev = adapter->netdev; | |
434 | struct pci_dev *pdev = adapter->pdev; | |
435 | union ixgbe_adv_rx_desc *rx_desc, *next_rxd; | |
436 | struct ixgbe_rx_buffer *rx_buffer_info, *next_buffer; | |
437 | struct sk_buff *skb; | |
438 | unsigned int i; | |
439 | u32 upper_len, len, staterr; | |
440 | u16 hdr_info, vlan_tag; | |
441 | bool is_vlan, cleaned = false; | |
442 | int cleaned_count = 0; | |
d2f4fbe2 | 443 | unsigned int total_rx_bytes = 0, total_rx_packets = 0; |
9a799d71 AK |
444 | |
445 | i = rx_ring->next_to_clean; | |
446 | upper_len = 0; | |
447 | rx_desc = IXGBE_RX_DESC_ADV(*rx_ring, i); | |
448 | staterr = le32_to_cpu(rx_desc->wb.upper.status_error); | |
449 | rx_buffer_info = &rx_ring->rx_buffer_info[i]; | |
450 | is_vlan = (staterr & IXGBE_RXD_STAT_VP); | |
451 | vlan_tag = le16_to_cpu(rx_desc->wb.upper.vlan); | |
452 | ||
453 | while (staterr & IXGBE_RXD_STAT_DD) { | |
454 | if (*work_done >= work_to_do) | |
455 | break; | |
456 | (*work_done)++; | |
457 | ||
458 | if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) { | |
459 | hdr_info = | |
460 | le16_to_cpu(rx_desc->wb.lower.lo_dword.hdr_info); | |
461 | len = | |
462 | ((hdr_info & IXGBE_RXDADV_HDRBUFLEN_MASK) >> | |
463 | IXGBE_RXDADV_HDRBUFLEN_SHIFT); | |
464 | if (hdr_info & IXGBE_RXDADV_SPH) | |
465 | adapter->rx_hdr_split++; | |
466 | if (len > IXGBE_RX_HDR_SIZE) | |
467 | len = IXGBE_RX_HDR_SIZE; | |
468 | upper_len = le16_to_cpu(rx_desc->wb.upper.length); | |
469 | } else | |
470 | len = le16_to_cpu(rx_desc->wb.upper.length); | |
471 | ||
472 | cleaned = true; | |
473 | skb = rx_buffer_info->skb; | |
474 | prefetch(skb->data - NET_IP_ALIGN); | |
475 | rx_buffer_info->skb = NULL; | |
476 | ||
477 | if (len && !skb_shinfo(skb)->nr_frags) { | |
478 | pci_unmap_single(pdev, rx_buffer_info->dma, | |
479 | adapter->rx_buf_len + NET_IP_ALIGN, | |
480 | PCI_DMA_FROMDEVICE); | |
481 | skb_put(skb, len); | |
482 | } | |
483 | ||
484 | if (upper_len) { | |
485 | pci_unmap_page(pdev, rx_buffer_info->page_dma, | |
486 | PAGE_SIZE, PCI_DMA_FROMDEVICE); | |
487 | rx_buffer_info->page_dma = 0; | |
488 | skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags, | |
489 | rx_buffer_info->page, 0, upper_len); | |
490 | rx_buffer_info->page = NULL; | |
491 | ||
492 | skb->len += upper_len; | |
493 | skb->data_len += upper_len; | |
494 | skb->truesize += upper_len; | |
495 | } | |
496 | ||
497 | i++; | |
498 | if (i == rx_ring->count) | |
499 | i = 0; | |
500 | next_buffer = &rx_ring->rx_buffer_info[i]; | |
501 | ||
502 | next_rxd = IXGBE_RX_DESC_ADV(*rx_ring, i); | |
503 | prefetch(next_rxd); | |
504 | ||
505 | cleaned_count++; | |
506 | if (staterr & IXGBE_RXD_STAT_EOP) { | |
507 | rx_ring->stats.packets++; | |
508 | rx_ring->stats.bytes += skb->len; | |
509 | } else { | |
510 | rx_buffer_info->skb = next_buffer->skb; | |
511 | rx_buffer_info->dma = next_buffer->dma; | |
512 | next_buffer->skb = skb; | |
513 | adapter->non_eop_descs++; | |
514 | goto next_desc; | |
515 | } | |
516 | ||
517 | if (staterr & IXGBE_RXDADV_ERR_FRAME_ERR_MASK) { | |
518 | dev_kfree_skb_irq(skb); | |
519 | goto next_desc; | |
520 | } | |
521 | ||
522 | ixgbe_rx_checksum(adapter, staterr, skb); | |
d2f4fbe2 AV |
523 | |
524 | /* probably a little skewed due to removing CRC */ | |
525 | total_rx_bytes += skb->len; | |
526 | total_rx_packets++; | |
527 | ||
9a799d71 AK |
528 | skb->protocol = eth_type_trans(skb, netdev); |
529 | ixgbe_receive_skb(adapter, skb, is_vlan, vlan_tag); | |
530 | netdev->last_rx = jiffies; | |
531 | ||
532 | next_desc: | |
533 | rx_desc->wb.upper.status_error = 0; | |
534 | ||
535 | /* return some buffers to hardware, one at a time is too slow */ | |
536 | if (cleaned_count >= IXGBE_RX_BUFFER_WRITE) { | |
537 | ixgbe_alloc_rx_buffers(adapter, rx_ring, cleaned_count); | |
538 | cleaned_count = 0; | |
539 | } | |
540 | ||
541 | /* use prefetched values */ | |
542 | rx_desc = next_rxd; | |
543 | rx_buffer_info = next_buffer; | |
544 | ||
545 | staterr = le32_to_cpu(rx_desc->wb.upper.status_error); | |
546 | is_vlan = (staterr & IXGBE_RXD_STAT_VP); | |
547 | vlan_tag = le16_to_cpu(rx_desc->wb.upper.vlan); | |
548 | } | |
549 | ||
550 | rx_ring->next_to_clean = i; | |
551 | cleaned_count = IXGBE_DESC_UNUSED(rx_ring); | |
552 | ||
553 | if (cleaned_count) | |
554 | ixgbe_alloc_rx_buffers(adapter, rx_ring, cleaned_count); | |
555 | ||
d2f4fbe2 AV |
556 | adapter->net_stats.rx_bytes += total_rx_bytes; |
557 | adapter->net_stats.rx_packets += total_rx_packets; | |
558 | ||
9a799d71 AK |
559 | return cleaned; |
560 | } | |
561 | ||
562 | #define IXGBE_MAX_INTR 10 | |
563 | /** | |
564 | * ixgbe_configure_msix - Configure MSI-X hardware | |
565 | * @adapter: board private structure | |
566 | * | |
567 | * ixgbe_configure_msix sets up the hardware to properly generate MSI-X | |
568 | * interrupts. | |
569 | **/ | |
570 | static void ixgbe_configure_msix(struct ixgbe_adapter *adapter) | |
571 | { | |
572 | int i, vector = 0; | |
573 | ||
574 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
575 | ixgbe_set_ivar(adapter, IXGBE_IVAR_TX_QUEUE(i), | |
576 | IXGBE_MSIX_VECTOR(vector)); | |
577 | writel(EITR_INTS_PER_SEC_TO_REG(adapter->tx_eitr), | |
578 | adapter->hw.hw_addr + adapter->tx_ring[i].itr_register); | |
579 | vector++; | |
580 | } | |
581 | ||
582 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
583 | ixgbe_set_ivar(adapter, IXGBE_IVAR_RX_QUEUE(i), | |
584 | IXGBE_MSIX_VECTOR(vector)); | |
585 | writel(EITR_INTS_PER_SEC_TO_REG(adapter->rx_eitr), | |
586 | adapter->hw.hw_addr + adapter->rx_ring[i].itr_register); | |
587 | vector++; | |
588 | } | |
589 | ||
590 | vector = adapter->num_tx_queues + adapter->num_rx_queues; | |
591 | ixgbe_set_ivar(adapter, IXGBE_IVAR_OTHER_CAUSES_INDEX, | |
592 | IXGBE_MSIX_VECTOR(vector)); | |
593 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITR(vector), 1950); | |
594 | } | |
595 | ||
596 | static irqreturn_t ixgbe_msix_lsc(int irq, void *data) | |
597 | { | |
598 | struct net_device *netdev = data; | |
599 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
600 | struct ixgbe_hw *hw = &adapter->hw; | |
601 | u32 eicr = IXGBE_READ_REG(hw, IXGBE_EICR); | |
602 | ||
603 | if (eicr & IXGBE_EICR_LSC) { | |
604 | adapter->lsc_int++; | |
605 | if (!test_bit(__IXGBE_DOWN, &adapter->state)) | |
606 | mod_timer(&adapter->watchdog_timer, jiffies); | |
607 | } | |
d4f80882 AV |
608 | |
609 | if (!test_bit(__IXGBE_DOWN, &adapter->state)) | |
610 | IXGBE_WRITE_REG(hw, IXGBE_EIMS, IXGBE_EIMS_OTHER); | |
9a799d71 AK |
611 | |
612 | return IRQ_HANDLED; | |
613 | } | |
614 | ||
615 | static irqreturn_t ixgbe_msix_clean_tx(int irq, void *data) | |
616 | { | |
617 | struct ixgbe_ring *txr = data; | |
618 | struct ixgbe_adapter *adapter = txr->adapter; | |
619 | ||
620 | ixgbe_clean_tx_irq(adapter, txr); | |
621 | ||
622 | return IRQ_HANDLED; | |
623 | } | |
624 | ||
625 | static irqreturn_t ixgbe_msix_clean_rx(int irq, void *data) | |
626 | { | |
627 | struct ixgbe_ring *rxr = data; | |
628 | struct ixgbe_adapter *adapter = rxr->adapter; | |
629 | ||
630 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, rxr->eims_value); | |
631 | netif_rx_schedule(adapter->netdev, &adapter->napi); | |
632 | return IRQ_HANDLED; | |
633 | } | |
634 | ||
635 | static int ixgbe_clean_rxonly(struct napi_struct *napi, int budget) | |
636 | { | |
637 | struct ixgbe_adapter *adapter = container_of(napi, | |
638 | struct ixgbe_adapter, napi); | |
639 | struct net_device *netdev = adapter->netdev; | |
640 | int work_done = 0; | |
641 | struct ixgbe_ring *rxr = adapter->rx_ring; | |
642 | ||
643 | /* Keep link state information with original netdev */ | |
644 | if (!netif_carrier_ok(netdev)) | |
645 | goto quit_polling; | |
646 | ||
647 | ixgbe_clean_rx_irq(adapter, rxr, &work_done, budget); | |
648 | ||
649 | /* If no Tx and not enough Rx work done, exit the polling mode */ | |
650 | if ((work_done < budget) || !netif_running(netdev)) { | |
651 | quit_polling: | |
652 | netif_rx_complete(netdev, napi); | |
653 | if (!test_bit(__IXGBE_DOWN, &adapter->state)) | |
654 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS, | |
655 | rxr->eims_value); | |
656 | } | |
657 | ||
658 | return work_done; | |
659 | } | |
660 | ||
661 | /** | |
662 | * ixgbe_setup_msix - Initialize MSI-X interrupts | |
663 | * | |
664 | * ixgbe_setup_msix allocates MSI-X vectors and requests | |
665 | * interrutps from the kernel. | |
666 | **/ | |
667 | static int ixgbe_setup_msix(struct ixgbe_adapter *adapter) | |
668 | { | |
669 | struct net_device *netdev = adapter->netdev; | |
670 | int i, int_vector = 0, err = 0; | |
671 | int max_msix_count; | |
672 | ||
673 | /* +1 for the LSC interrupt */ | |
674 | max_msix_count = adapter->num_rx_queues + adapter->num_tx_queues + 1; | |
675 | adapter->msix_entries = kcalloc(max_msix_count, | |
676 | sizeof(struct msix_entry), GFP_KERNEL); | |
677 | if (!adapter->msix_entries) | |
678 | return -ENOMEM; | |
679 | ||
680 | for (i = 0; i < max_msix_count; i++) | |
681 | adapter->msix_entries[i].entry = i; | |
682 | ||
683 | err = pci_enable_msix(adapter->pdev, adapter->msix_entries, | |
684 | max_msix_count); | |
685 | if (err) | |
686 | goto out; | |
687 | ||
688 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
689 | sprintf(adapter->tx_ring[i].name, "%s-tx%d", netdev->name, i); | |
690 | err = request_irq(adapter->msix_entries[int_vector].vector, | |
691 | &ixgbe_msix_clean_tx, | |
692 | 0, | |
693 | adapter->tx_ring[i].name, | |
694 | &(adapter->tx_ring[i])); | |
695 | if (err) { | |
696 | DPRINTK(PROBE, ERR, | |
697 | "request_irq failed for MSIX interrupt " | |
698 | "Error: %d\n", err); | |
699 | goto release_irqs; | |
700 | } | |
701 | adapter->tx_ring[i].eims_value = | |
702 | (1 << IXGBE_MSIX_VECTOR(int_vector)); | |
703 | adapter->tx_ring[i].itr_register = IXGBE_EITR(int_vector); | |
704 | int_vector++; | |
705 | } | |
706 | ||
707 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
708 | if (strlen(netdev->name) < (IFNAMSIZ - 5)) | |
709 | sprintf(adapter->rx_ring[i].name, | |
710 | "%s-rx%d", netdev->name, i); | |
711 | else | |
712 | memcpy(adapter->rx_ring[i].name, | |
713 | netdev->name, IFNAMSIZ); | |
714 | err = request_irq(adapter->msix_entries[int_vector].vector, | |
715 | &ixgbe_msix_clean_rx, 0, | |
716 | adapter->rx_ring[i].name, | |
717 | &(adapter->rx_ring[i])); | |
718 | if (err) { | |
719 | DPRINTK(PROBE, ERR, | |
720 | "request_irq failed for MSIX interrupt " | |
721 | "Error: %d\n", err); | |
722 | goto release_irqs; | |
723 | } | |
724 | ||
725 | adapter->rx_ring[i].eims_value = | |
726 | (1 << IXGBE_MSIX_VECTOR(int_vector)); | |
727 | adapter->rx_ring[i].itr_register = IXGBE_EITR(int_vector); | |
728 | int_vector++; | |
729 | } | |
730 | ||
731 | sprintf(adapter->lsc_name, "%s-lsc", netdev->name); | |
732 | err = request_irq(adapter->msix_entries[int_vector].vector, | |
733 | &ixgbe_msix_lsc, 0, adapter->lsc_name, netdev); | |
734 | if (err) { | |
735 | DPRINTK(PROBE, ERR, | |
736 | "request_irq for msix_lsc failed: %d\n", err); | |
737 | goto release_irqs; | |
738 | } | |
739 | ||
740 | /* FIXME: implement netif_napi_remove() instead */ | |
741 | adapter->napi.poll = ixgbe_clean_rxonly; | |
742 | adapter->flags |= IXGBE_FLAG_MSIX_ENABLED; | |
743 | return 0; | |
744 | ||
745 | release_irqs: | |
746 | int_vector--; | |
747 | for (; int_vector >= adapter->num_tx_queues; int_vector--) | |
748 | free_irq(adapter->msix_entries[int_vector].vector, | |
749 | &(adapter->rx_ring[int_vector - | |
750 | adapter->num_tx_queues])); | |
751 | ||
752 | for (; int_vector >= 0; int_vector--) | |
753 | free_irq(adapter->msix_entries[int_vector].vector, | |
754 | &(adapter->tx_ring[int_vector])); | |
755 | out: | |
756 | kfree(adapter->msix_entries); | |
757 | adapter->msix_entries = NULL; | |
758 | adapter->flags &= ~IXGBE_FLAG_MSIX_ENABLED; | |
759 | return err; | |
760 | } | |
761 | ||
762 | /** | |
763 | * ixgbe_intr - Interrupt Handler | |
764 | * @irq: interrupt number | |
765 | * @data: pointer to a network interface device structure | |
766 | * @pt_regs: CPU registers structure | |
767 | **/ | |
768 | static irqreturn_t ixgbe_intr(int irq, void *data) | |
769 | { | |
770 | struct net_device *netdev = data; | |
771 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
772 | struct ixgbe_hw *hw = &adapter->hw; | |
773 | u32 eicr; | |
774 | ||
775 | eicr = IXGBE_READ_REG(hw, IXGBE_EICR); | |
776 | ||
777 | if (!eicr) | |
778 | return IRQ_NONE; /* Not our interrupt */ | |
779 | ||
780 | if (eicr & IXGBE_EICR_LSC) { | |
781 | adapter->lsc_int++; | |
782 | if (!test_bit(__IXGBE_DOWN, &adapter->state)) | |
783 | mod_timer(&adapter->watchdog_timer, jiffies); | |
784 | } | |
785 | if (netif_rx_schedule_prep(netdev, &adapter->napi)) { | |
786 | /* Disable interrupts and register for poll. The flush of the | |
787 | * posted write is intentionally left out. */ | |
9a799d71 AK |
788 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, ~0); |
789 | __netif_rx_schedule(netdev, &adapter->napi); | |
790 | } | |
791 | ||
792 | return IRQ_HANDLED; | |
793 | } | |
794 | ||
795 | /** | |
796 | * ixgbe_request_irq - initialize interrupts | |
797 | * @adapter: board private structure | |
798 | * | |
799 | * Attempts to configure interrupts using the best available | |
800 | * capabilities of the hardware and kernel. | |
801 | **/ | |
802 | static int ixgbe_request_irq(struct ixgbe_adapter *adapter, u32 *num_rx_queues) | |
803 | { | |
804 | struct net_device *netdev = adapter->netdev; | |
805 | int flags, err; | |
28fc1f5a | 806 | irq_handler_t handler = ixgbe_intr; |
9a799d71 AK |
807 | |
808 | flags = IRQF_SHARED; | |
809 | ||
810 | err = ixgbe_setup_msix(adapter); | |
811 | if (!err) | |
812 | goto request_done; | |
813 | ||
814 | /* | |
815 | * if we can't do MSI-X, fall through and try MSI | |
816 | * No need to reallocate memory since we're decreasing the number of | |
817 | * queues. We just won't use the other ones, also it is freed correctly | |
818 | * on ixgbe_remove. | |
819 | */ | |
820 | *num_rx_queues = 1; | |
821 | ||
822 | /* do MSI */ | |
823 | err = pci_enable_msi(adapter->pdev); | |
824 | if (!err) { | |
825 | adapter->flags |= IXGBE_FLAG_MSI_ENABLED; | |
826 | flags &= ~IRQF_SHARED; | |
827 | handler = &ixgbe_intr; | |
828 | } | |
829 | ||
830 | err = request_irq(adapter->pdev->irq, handler, flags, | |
831 | netdev->name, netdev); | |
832 | if (err) | |
833 | DPRINTK(PROBE, ERR, "request_irq failed, Error %d\n", err); | |
834 | ||
835 | request_done: | |
836 | return err; | |
837 | } | |
838 | ||
839 | static void ixgbe_free_irq(struct ixgbe_adapter *adapter) | |
840 | { | |
841 | struct net_device *netdev = adapter->netdev; | |
842 | ||
843 | if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) { | |
844 | int i; | |
845 | ||
846 | for (i = 0; i < adapter->num_tx_queues; i++) | |
847 | free_irq(adapter->msix_entries[i].vector, | |
848 | &(adapter->tx_ring[i])); | |
849 | for (i = 0; i < adapter->num_rx_queues; i++) | |
850 | free_irq(adapter->msix_entries[i + | |
851 | adapter->num_tx_queues].vector, | |
852 | &(adapter->rx_ring[i])); | |
853 | i = adapter->num_rx_queues + adapter->num_tx_queues; | |
854 | free_irq(adapter->msix_entries[i].vector, netdev); | |
855 | pci_disable_msix(adapter->pdev); | |
856 | kfree(adapter->msix_entries); | |
857 | adapter->msix_entries = NULL; | |
858 | adapter->flags &= ~IXGBE_FLAG_MSIX_ENABLED; | |
859 | return; | |
860 | } | |
861 | ||
862 | free_irq(adapter->pdev->irq, netdev); | |
863 | if (adapter->flags & IXGBE_FLAG_MSI_ENABLED) { | |
864 | pci_disable_msi(adapter->pdev); | |
865 | adapter->flags &= ~IXGBE_FLAG_MSI_ENABLED; | |
866 | } | |
867 | } | |
868 | ||
869 | /** | |
870 | * ixgbe_irq_disable - Mask off interrupt generation on the NIC | |
871 | * @adapter: board private structure | |
872 | **/ | |
873 | static inline void ixgbe_irq_disable(struct ixgbe_adapter *adapter) | |
874 | { | |
9a799d71 AK |
875 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, ~0); |
876 | IXGBE_WRITE_FLUSH(&adapter->hw); | |
877 | synchronize_irq(adapter->pdev->irq); | |
878 | } | |
879 | ||
880 | /** | |
881 | * ixgbe_irq_enable - Enable default interrupt generation settings | |
882 | * @adapter: board private structure | |
883 | **/ | |
884 | static inline void ixgbe_irq_enable(struct ixgbe_adapter *adapter) | |
885 | { | |
d4f80882 AV |
886 | if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) |
887 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIAC, | |
888 | (IXGBE_EIMS_ENABLE_MASK & | |
889 | ~(IXGBE_EIMS_OTHER | IXGBE_EIMS_LSC))); | |
890 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS, | |
891 | IXGBE_EIMS_ENABLE_MASK); | |
892 | IXGBE_WRITE_FLUSH(&adapter->hw); | |
9a799d71 AK |
893 | } |
894 | ||
895 | /** | |
896 | * ixgbe_configure_msi_and_legacy - Initialize PIN (INTA...) and MSI interrupts | |
897 | * | |
898 | **/ | |
899 | static void ixgbe_configure_msi_and_legacy(struct ixgbe_adapter *adapter) | |
900 | { | |
901 | int i; | |
902 | struct ixgbe_hw *hw = &adapter->hw; | |
903 | ||
904 | if (adapter->rx_eitr) | |
905 | IXGBE_WRITE_REG(hw, IXGBE_EITR(0), | |
906 | EITR_INTS_PER_SEC_TO_REG(adapter->rx_eitr)); | |
907 | ||
908 | /* for re-triggering the interrupt in non-NAPI mode */ | |
909 | adapter->rx_ring[0].eims_value = (1 << IXGBE_MSIX_VECTOR(0)); | |
910 | adapter->tx_ring[0].eims_value = (1 << IXGBE_MSIX_VECTOR(0)); | |
911 | ||
912 | ixgbe_set_ivar(adapter, IXGBE_IVAR_RX_QUEUE(0), 0); | |
913 | for (i = 0; i < adapter->num_tx_queues; i++) | |
914 | ixgbe_set_ivar(adapter, IXGBE_IVAR_TX_QUEUE(i), i); | |
915 | } | |
916 | ||
917 | /** | |
918 | * ixgbe_configure_tx - Configure 8254x Transmit Unit after Reset | |
919 | * @adapter: board private structure | |
920 | * | |
921 | * Configure the Tx unit of the MAC after a reset. | |
922 | **/ | |
923 | static void ixgbe_configure_tx(struct ixgbe_adapter *adapter) | |
924 | { | |
925 | u64 tdba; | |
926 | struct ixgbe_hw *hw = &adapter->hw; | |
927 | u32 i, tdlen; | |
928 | ||
929 | /* Setup the HW Tx Head and Tail descriptor pointers */ | |
930 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
931 | tdba = adapter->tx_ring[i].dma; | |
932 | tdlen = adapter->tx_ring[i].count * | |
933 | sizeof(union ixgbe_adv_tx_desc); | |
934 | IXGBE_WRITE_REG(hw, IXGBE_TDBAL(i), (tdba & DMA_32BIT_MASK)); | |
935 | IXGBE_WRITE_REG(hw, IXGBE_TDBAH(i), (tdba >> 32)); | |
936 | IXGBE_WRITE_REG(hw, IXGBE_TDLEN(i), tdlen); | |
937 | IXGBE_WRITE_REG(hw, IXGBE_TDH(i), 0); | |
938 | IXGBE_WRITE_REG(hw, IXGBE_TDT(i), 0); | |
939 | adapter->tx_ring[i].head = IXGBE_TDH(i); | |
940 | adapter->tx_ring[i].tail = IXGBE_TDT(i); | |
941 | } | |
942 | ||
943 | IXGBE_WRITE_REG(hw, IXGBE_TIPG, IXGBE_TIPG_FIBER_DEFAULT); | |
944 | } | |
945 | ||
946 | #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \ | |
947 | (((S) & (PAGE_SIZE - 1)) ? 1 : 0)) | |
948 | ||
949 | #define IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT 2 | |
950 | /** | |
951 | * ixgbe_configure_rx - Configure 8254x Receive Unit after Reset | |
952 | * @adapter: board private structure | |
953 | * | |
954 | * Configure the Rx unit of the MAC after a reset. | |
955 | **/ | |
956 | static void ixgbe_configure_rx(struct ixgbe_adapter *adapter) | |
957 | { | |
958 | u64 rdba; | |
959 | struct ixgbe_hw *hw = &adapter->hw; | |
960 | struct net_device *netdev = adapter->netdev; | |
961 | int max_frame = netdev->mtu + ETH_HLEN + ETH_FCS_LEN; | |
962 | u32 rdlen, rxctrl, rxcsum; | |
963 | u32 random[10]; | |
964 | u32 reta, mrqc; | |
965 | int i; | |
966 | u32 fctrl, hlreg0; | |
967 | u32 srrctl; | |
968 | u32 pages; | |
969 | ||
970 | /* Decide whether to use packet split mode or not */ | |
971 | if (netdev->mtu > ETH_DATA_LEN) | |
972 | adapter->flags |= IXGBE_FLAG_RX_PS_ENABLED; | |
973 | else | |
974 | adapter->flags &= ~IXGBE_FLAG_RX_PS_ENABLED; | |
975 | ||
976 | /* Set the RX buffer length according to the mode */ | |
977 | if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) { | |
978 | adapter->rx_buf_len = IXGBE_RX_HDR_SIZE; | |
979 | } else { | |
980 | if (netdev->mtu <= ETH_DATA_LEN) | |
981 | adapter->rx_buf_len = MAXIMUM_ETHERNET_VLAN_SIZE; | |
982 | else | |
983 | adapter->rx_buf_len = ALIGN(max_frame, 1024); | |
984 | } | |
985 | ||
986 | fctrl = IXGBE_READ_REG(&adapter->hw, IXGBE_FCTRL); | |
987 | fctrl |= IXGBE_FCTRL_BAM; | |
988 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_FCTRL, fctrl); | |
989 | ||
990 | hlreg0 = IXGBE_READ_REG(hw, IXGBE_HLREG0); | |
991 | if (adapter->netdev->mtu <= ETH_DATA_LEN) | |
992 | hlreg0 &= ~IXGBE_HLREG0_JUMBOEN; | |
993 | else | |
994 | hlreg0 |= IXGBE_HLREG0_JUMBOEN; | |
995 | IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0); | |
996 | ||
997 | pages = PAGE_USE_COUNT(adapter->netdev->mtu); | |
998 | ||
999 | srrctl = IXGBE_READ_REG(&adapter->hw, IXGBE_SRRCTL(0)); | |
1000 | srrctl &= ~IXGBE_SRRCTL_BSIZEHDR_MASK; | |
1001 | srrctl &= ~IXGBE_SRRCTL_BSIZEPKT_MASK; | |
1002 | ||
1003 | if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) { | |
1004 | srrctl |= PAGE_SIZE >> IXGBE_SRRCTL_BSIZEPKT_SHIFT; | |
1005 | srrctl |= IXGBE_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS; | |
1006 | srrctl |= ((IXGBE_RX_HDR_SIZE << | |
1007 | IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT) & | |
1008 | IXGBE_SRRCTL_BSIZEHDR_MASK); | |
1009 | } else { | |
1010 | srrctl |= IXGBE_SRRCTL_DESCTYPE_ADV_ONEBUF; | |
1011 | ||
1012 | if (adapter->rx_buf_len == MAXIMUM_ETHERNET_VLAN_SIZE) | |
1013 | srrctl |= | |
1014 | IXGBE_RXBUFFER_2048 >> IXGBE_SRRCTL_BSIZEPKT_SHIFT; | |
1015 | else | |
1016 | srrctl |= | |
1017 | adapter->rx_buf_len >> IXGBE_SRRCTL_BSIZEPKT_SHIFT; | |
1018 | } | |
1019 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_SRRCTL(0), srrctl); | |
1020 | ||
1021 | rdlen = adapter->rx_ring[0].count * sizeof(union ixgbe_adv_rx_desc); | |
1022 | /* disable receives while setting up the descriptors */ | |
1023 | rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL); | |
1024 | IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, rxctrl & ~IXGBE_RXCTRL_RXEN); | |
1025 | ||
1026 | /* Setup the HW Rx Head and Tail Descriptor Pointers and | |
1027 | * the Base and Length of the Rx Descriptor Ring */ | |
1028 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
1029 | rdba = adapter->rx_ring[i].dma; | |
1030 | IXGBE_WRITE_REG(hw, IXGBE_RDBAL(i), (rdba & DMA_32BIT_MASK)); | |
1031 | IXGBE_WRITE_REG(hw, IXGBE_RDBAH(i), (rdba >> 32)); | |
1032 | IXGBE_WRITE_REG(hw, IXGBE_RDLEN(i), rdlen); | |
1033 | IXGBE_WRITE_REG(hw, IXGBE_RDH(i), 0); | |
1034 | IXGBE_WRITE_REG(hw, IXGBE_RDT(i), 0); | |
1035 | adapter->rx_ring[i].head = IXGBE_RDH(i); | |
1036 | adapter->rx_ring[i].tail = IXGBE_RDT(i); | |
1037 | } | |
1038 | ||
1039 | if (adapter->num_rx_queues > 1) { | |
1040 | /* Random 40bytes used as random key in RSS hash function */ | |
1041 | get_random_bytes(&random[0], 40); | |
1042 | ||
1043 | switch (adapter->num_rx_queues) { | |
1044 | case 8: | |
1045 | case 4: | |
1046 | /* Bits [3:0] in each byte refers the Rx queue no */ | |
1047 | reta = 0x00010203; | |
1048 | break; | |
1049 | case 2: | |
1050 | reta = 0x00010001; | |
1051 | break; | |
1052 | default: | |
1053 | reta = 0x00000000; | |
1054 | break; | |
1055 | } | |
1056 | ||
1057 | /* Fill out redirection table */ | |
1058 | for (i = 0; i < 32; i++) { | |
1059 | IXGBE_WRITE_REG_ARRAY(hw, IXGBE_RETA(0), i, reta); | |
1060 | if (adapter->num_rx_queues > 4) { | |
1061 | i++; | |
1062 | IXGBE_WRITE_REG_ARRAY(hw, IXGBE_RETA(0), i, | |
1063 | 0x04050607); | |
1064 | } | |
1065 | } | |
1066 | ||
1067 | /* Fill out hash function seeds */ | |
1068 | for (i = 0; i < 10; i++) | |
1069 | IXGBE_WRITE_REG_ARRAY(hw, IXGBE_RSSRK(0), i, random[i]); | |
1070 | ||
1071 | mrqc = IXGBE_MRQC_RSSEN | |
1072 | /* Perform hash on these packet types */ | |
1073 | | IXGBE_MRQC_RSS_FIELD_IPV4 | |
1074 | | IXGBE_MRQC_RSS_FIELD_IPV4_TCP | |
1075 | | IXGBE_MRQC_RSS_FIELD_IPV4_UDP | |
1076 | | IXGBE_MRQC_RSS_FIELD_IPV6_EX_TCP | |
1077 | | IXGBE_MRQC_RSS_FIELD_IPV6_EX | |
1078 | | IXGBE_MRQC_RSS_FIELD_IPV6 | |
1079 | | IXGBE_MRQC_RSS_FIELD_IPV6_TCP | |
1080 | | IXGBE_MRQC_RSS_FIELD_IPV6_UDP | |
1081 | | IXGBE_MRQC_RSS_FIELD_IPV6_EX_UDP; | |
1082 | IXGBE_WRITE_REG(hw, IXGBE_MRQC, mrqc); | |
1083 | ||
1084 | /* Multiqueue and packet checksumming are mutually exclusive. */ | |
1085 | rxcsum = IXGBE_READ_REG(hw, IXGBE_RXCSUM); | |
1086 | rxcsum |= IXGBE_RXCSUM_PCSD; | |
1087 | IXGBE_WRITE_REG(hw, IXGBE_RXCSUM, rxcsum); | |
1088 | } else { | |
1089 | /* Enable Receive Checksum Offload for TCP and UDP */ | |
1090 | rxcsum = IXGBE_READ_REG(hw, IXGBE_RXCSUM); | |
1091 | if (adapter->flags & IXGBE_FLAG_RX_CSUM_ENABLED) { | |
1092 | /* Enable IPv4 payload checksum for UDP fragments | |
1093 | * Must be used in conjunction with packet-split. */ | |
1094 | rxcsum |= IXGBE_RXCSUM_IPPCSE; | |
1095 | } else { | |
1096 | /* don't need to clear IPPCSE as it defaults to 0 */ | |
1097 | } | |
1098 | IXGBE_WRITE_REG(hw, IXGBE_RXCSUM, rxcsum); | |
1099 | } | |
1100 | /* Enable Receives */ | |
1101 | IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, rxctrl); | |
1102 | rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL); | |
1103 | } | |
1104 | ||
1105 | static void ixgbe_vlan_rx_register(struct net_device *netdev, | |
1106 | struct vlan_group *grp) | |
1107 | { | |
1108 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
1109 | u32 ctrl; | |
1110 | ||
d4f80882 AV |
1111 | if (!test_bit(__IXGBE_DOWN, &adapter->state)) |
1112 | ixgbe_irq_disable(adapter); | |
9a799d71 AK |
1113 | adapter->vlgrp = grp; |
1114 | ||
1115 | if (grp) { | |
1116 | /* enable VLAN tag insert/strip */ | |
1117 | ctrl = IXGBE_READ_REG(&adapter->hw, IXGBE_VLNCTRL); | |
1118 | ctrl |= IXGBE_VLNCTRL_VME | IXGBE_VLNCTRL_VFE; | |
1119 | ctrl &= ~IXGBE_VLNCTRL_CFIEN; | |
1120 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_VLNCTRL, ctrl); | |
1121 | } | |
1122 | ||
d4f80882 AV |
1123 | if (!test_bit(__IXGBE_DOWN, &adapter->state)) |
1124 | ixgbe_irq_enable(adapter); | |
9a799d71 AK |
1125 | } |
1126 | ||
1127 | static void ixgbe_vlan_rx_add_vid(struct net_device *netdev, u16 vid) | |
1128 | { | |
1129 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
1130 | ||
1131 | /* add VID to filter table */ | |
1132 | ixgbe_set_vfta(&adapter->hw, vid, 0, true); | |
1133 | } | |
1134 | ||
1135 | static void ixgbe_vlan_rx_kill_vid(struct net_device *netdev, u16 vid) | |
1136 | { | |
1137 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
1138 | ||
d4f80882 AV |
1139 | if (!test_bit(__IXGBE_DOWN, &adapter->state)) |
1140 | ixgbe_irq_disable(adapter); | |
1141 | ||
9a799d71 | 1142 | vlan_group_set_device(adapter->vlgrp, vid, NULL); |
d4f80882 AV |
1143 | |
1144 | if (!test_bit(__IXGBE_DOWN, &adapter->state)) | |
1145 | ixgbe_irq_enable(adapter); | |
9a799d71 AK |
1146 | |
1147 | /* remove VID from filter table */ | |
1148 | ixgbe_set_vfta(&adapter->hw, vid, 0, false); | |
1149 | } | |
1150 | ||
1151 | static void ixgbe_restore_vlan(struct ixgbe_adapter *adapter) | |
1152 | { | |
1153 | ixgbe_vlan_rx_register(adapter->netdev, adapter->vlgrp); | |
1154 | ||
1155 | if (adapter->vlgrp) { | |
1156 | u16 vid; | |
1157 | for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) { | |
1158 | if (!vlan_group_get_device(adapter->vlgrp, vid)) | |
1159 | continue; | |
1160 | ixgbe_vlan_rx_add_vid(adapter->netdev, vid); | |
1161 | } | |
1162 | } | |
1163 | } | |
1164 | ||
1165 | /** | |
1166 | * ixgbe_set_multi - Multicast and Promiscuous mode set | |
1167 | * @netdev: network interface device structure | |
1168 | * | |
1169 | * The set_multi entry point is called whenever the multicast address | |
1170 | * list or the network interface flags are updated. This routine is | |
1171 | * responsible for configuring the hardware for proper multicast, | |
1172 | * promiscuous mode, and all-multi behavior. | |
1173 | **/ | |
1174 | static void ixgbe_set_multi(struct net_device *netdev) | |
1175 | { | |
1176 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
1177 | struct ixgbe_hw *hw = &adapter->hw; | |
1178 | struct dev_mc_list *mc_ptr; | |
1179 | u8 *mta_list; | |
1180 | u32 fctrl; | |
1181 | int i; | |
1182 | ||
1183 | /* Check for Promiscuous and All Multicast modes */ | |
1184 | ||
1185 | fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL); | |
1186 | ||
1187 | if (netdev->flags & IFF_PROMISC) { | |
1188 | fctrl |= (IXGBE_FCTRL_UPE | IXGBE_FCTRL_MPE); | |
1189 | } else if (netdev->flags & IFF_ALLMULTI) { | |
1190 | fctrl |= IXGBE_FCTRL_MPE; | |
1191 | fctrl &= ~IXGBE_FCTRL_UPE; | |
1192 | } else { | |
1193 | fctrl &= ~(IXGBE_FCTRL_UPE | IXGBE_FCTRL_MPE); | |
1194 | } | |
1195 | ||
1196 | IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl); | |
1197 | ||
1198 | if (netdev->mc_count) { | |
1199 | mta_list = kcalloc(netdev->mc_count, ETH_ALEN, GFP_ATOMIC); | |
1200 | if (!mta_list) | |
1201 | return; | |
1202 | ||
1203 | /* Shared function expects packed array of only addresses. */ | |
1204 | mc_ptr = netdev->mc_list; | |
1205 | ||
1206 | for (i = 0; i < netdev->mc_count; i++) { | |
1207 | if (!mc_ptr) | |
1208 | break; | |
1209 | memcpy(mta_list + (i * ETH_ALEN), mc_ptr->dmi_addr, | |
1210 | ETH_ALEN); | |
1211 | mc_ptr = mc_ptr->next; | |
1212 | } | |
1213 | ||
1214 | ixgbe_update_mc_addr_list(hw, mta_list, i, 0); | |
1215 | kfree(mta_list); | |
1216 | } else { | |
1217 | ixgbe_update_mc_addr_list(hw, NULL, 0, 0); | |
1218 | } | |
1219 | ||
1220 | } | |
1221 | ||
1222 | static void ixgbe_configure(struct ixgbe_adapter *adapter) | |
1223 | { | |
1224 | struct net_device *netdev = adapter->netdev; | |
1225 | int i; | |
1226 | ||
1227 | ixgbe_set_multi(netdev); | |
1228 | ||
1229 | ixgbe_restore_vlan(adapter); | |
1230 | ||
1231 | ixgbe_configure_tx(adapter); | |
1232 | ixgbe_configure_rx(adapter); | |
1233 | for (i = 0; i < adapter->num_rx_queues; i++) | |
1234 | ixgbe_alloc_rx_buffers(adapter, &adapter->rx_ring[i], | |
1235 | (adapter->rx_ring[i].count - 1)); | |
1236 | } | |
1237 | ||
1238 | static int ixgbe_up_complete(struct ixgbe_adapter *adapter) | |
1239 | { | |
1240 | struct net_device *netdev = adapter->netdev; | |
1241 | int i; | |
1242 | u32 gpie = 0; | |
1243 | struct ixgbe_hw *hw = &adapter->hw; | |
1244 | u32 txdctl, rxdctl, mhadd; | |
1245 | int max_frame = netdev->mtu + ETH_HLEN + ETH_FCS_LEN; | |
1246 | ||
5eba3699 AV |
1247 | ixgbe_get_hw_control(adapter); |
1248 | ||
9a799d71 AK |
1249 | if (adapter->flags & (IXGBE_FLAG_MSIX_ENABLED | |
1250 | IXGBE_FLAG_MSI_ENABLED)) { | |
1251 | if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) { | |
1252 | gpie = (IXGBE_GPIE_MSIX_MODE | IXGBE_GPIE_EIAME | | |
1253 | IXGBE_GPIE_PBA_SUPPORT | IXGBE_GPIE_OCD); | |
1254 | } else { | |
1255 | /* MSI only */ | |
1256 | gpie = (IXGBE_GPIE_EIAME | | |
1257 | IXGBE_GPIE_PBA_SUPPORT); | |
1258 | } | |
1259 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_GPIE, gpie); | |
1260 | gpie = IXGBE_READ_REG(&adapter->hw, IXGBE_GPIE); | |
1261 | } | |
1262 | ||
1263 | mhadd = IXGBE_READ_REG(hw, IXGBE_MHADD); | |
1264 | ||
1265 | if (max_frame != (mhadd >> IXGBE_MHADD_MFS_SHIFT)) { | |
1266 | mhadd &= ~IXGBE_MHADD_MFS_MASK; | |
1267 | mhadd |= max_frame << IXGBE_MHADD_MFS_SHIFT; | |
1268 | ||
1269 | IXGBE_WRITE_REG(hw, IXGBE_MHADD, mhadd); | |
1270 | } | |
1271 | ||
1272 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
1273 | txdctl = IXGBE_READ_REG(&adapter->hw, IXGBE_TXDCTL(i)); | |
1274 | txdctl |= IXGBE_TXDCTL_ENABLE; | |
1275 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_TXDCTL(i), txdctl); | |
1276 | } | |
1277 | ||
1278 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
1279 | rxdctl = IXGBE_READ_REG(&adapter->hw, IXGBE_RXDCTL(i)); | |
1280 | rxdctl |= IXGBE_RXDCTL_ENABLE; | |
1281 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_RXDCTL(i), rxdctl); | |
1282 | } | |
1283 | /* enable all receives */ | |
1284 | rxdctl = IXGBE_READ_REG(hw, IXGBE_RXCTRL); | |
1285 | rxdctl |= (IXGBE_RXCTRL_DMBYPS | IXGBE_RXCTRL_RXEN); | |
1286 | IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, rxdctl); | |
1287 | ||
1288 | if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) | |
1289 | ixgbe_configure_msix(adapter); | |
1290 | else | |
1291 | ixgbe_configure_msi_and_legacy(adapter); | |
1292 | ||
1293 | clear_bit(__IXGBE_DOWN, &adapter->state); | |
1294 | napi_enable(&adapter->napi); | |
1295 | ixgbe_irq_enable(adapter); | |
1296 | ||
1297 | /* bring the link up in the watchdog, this could race with our first | |
1298 | * link up interrupt but shouldn't be a problem */ | |
1299 | mod_timer(&adapter->watchdog_timer, jiffies); | |
1300 | return 0; | |
1301 | } | |
1302 | ||
d4f80882 AV |
1303 | void ixgbe_reinit_locked(struct ixgbe_adapter *adapter) |
1304 | { | |
1305 | WARN_ON(in_interrupt()); | |
1306 | while (test_and_set_bit(__IXGBE_RESETTING, &adapter->state)) | |
1307 | msleep(1); | |
1308 | ixgbe_down(adapter); | |
1309 | ixgbe_up(adapter); | |
1310 | clear_bit(__IXGBE_RESETTING, &adapter->state); | |
1311 | } | |
1312 | ||
9a799d71 AK |
1313 | int ixgbe_up(struct ixgbe_adapter *adapter) |
1314 | { | |
1315 | /* hardware has been reset, we need to reload some things */ | |
1316 | ixgbe_configure(adapter); | |
1317 | ||
1318 | return ixgbe_up_complete(adapter); | |
1319 | } | |
1320 | ||
1321 | void ixgbe_reset(struct ixgbe_adapter *adapter) | |
1322 | { | |
1323 | if (ixgbe_init_hw(&adapter->hw)) | |
1324 | DPRINTK(PROBE, ERR, "Hardware Error\n"); | |
1325 | ||
1326 | /* reprogram the RAR[0] in case user changed it. */ | |
1327 | ixgbe_set_rar(&adapter->hw, 0, adapter->hw.mac.addr, 0, IXGBE_RAH_AV); | |
1328 | ||
1329 | } | |
1330 | ||
1331 | #ifdef CONFIG_PM | |
1332 | static int ixgbe_resume(struct pci_dev *pdev) | |
1333 | { | |
1334 | struct net_device *netdev = pci_get_drvdata(pdev); | |
1335 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
1336 | u32 err, num_rx_queues = adapter->num_rx_queues; | |
1337 | ||
1338 | pci_set_power_state(pdev, PCI_D0); | |
1339 | pci_restore_state(pdev); | |
1340 | err = pci_enable_device(pdev); | |
1341 | if (err) { | |
1342 | printk(KERN_ERR "ixgbe: Cannot enable PCI device from " \ | |
1343 | "suspend\n"); | |
1344 | return err; | |
1345 | } | |
1346 | pci_set_master(pdev); | |
1347 | ||
1348 | pci_enable_wake(pdev, PCI_D3hot, 0); | |
1349 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
1350 | ||
1351 | if (netif_running(netdev)) { | |
1352 | err = ixgbe_request_irq(adapter, &num_rx_queues); | |
1353 | if (err) | |
1354 | return err; | |
1355 | } | |
1356 | ||
1357 | ixgbe_reset(adapter); | |
1358 | ||
1359 | if (netif_running(netdev)) | |
1360 | ixgbe_up(adapter); | |
1361 | ||
1362 | netif_device_attach(netdev); | |
1363 | ||
1364 | return 0; | |
1365 | } | |
1366 | #endif | |
1367 | ||
1368 | /** | |
1369 | * ixgbe_clean_rx_ring - Free Rx Buffers per Queue | |
1370 | * @adapter: board private structure | |
1371 | * @rx_ring: ring to free buffers from | |
1372 | **/ | |
1373 | static void ixgbe_clean_rx_ring(struct ixgbe_adapter *adapter, | |
1374 | struct ixgbe_ring *rx_ring) | |
1375 | { | |
1376 | struct pci_dev *pdev = adapter->pdev; | |
1377 | unsigned long size; | |
1378 | unsigned int i; | |
1379 | ||
1380 | /* Free all the Rx ring sk_buffs */ | |
1381 | ||
1382 | for (i = 0; i < rx_ring->count; i++) { | |
1383 | struct ixgbe_rx_buffer *rx_buffer_info; | |
1384 | ||
1385 | rx_buffer_info = &rx_ring->rx_buffer_info[i]; | |
1386 | if (rx_buffer_info->dma) { | |
1387 | pci_unmap_single(pdev, rx_buffer_info->dma, | |
1388 | adapter->rx_buf_len, | |
1389 | PCI_DMA_FROMDEVICE); | |
1390 | rx_buffer_info->dma = 0; | |
1391 | } | |
1392 | if (rx_buffer_info->skb) { | |
1393 | dev_kfree_skb(rx_buffer_info->skb); | |
1394 | rx_buffer_info->skb = NULL; | |
1395 | } | |
1396 | if (!rx_buffer_info->page) | |
1397 | continue; | |
1398 | pci_unmap_page(pdev, rx_buffer_info->page_dma, PAGE_SIZE, | |
1399 | PCI_DMA_FROMDEVICE); | |
1400 | rx_buffer_info->page_dma = 0; | |
1401 | ||
1402 | put_page(rx_buffer_info->page); | |
1403 | rx_buffer_info->page = NULL; | |
1404 | } | |
1405 | ||
1406 | size = sizeof(struct ixgbe_rx_buffer) * rx_ring->count; | |
1407 | memset(rx_ring->rx_buffer_info, 0, size); | |
1408 | ||
1409 | /* Zero out the descriptor ring */ | |
1410 | memset(rx_ring->desc, 0, rx_ring->size); | |
1411 | ||
1412 | rx_ring->next_to_clean = 0; | |
1413 | rx_ring->next_to_use = 0; | |
1414 | ||
1415 | writel(0, adapter->hw.hw_addr + rx_ring->head); | |
1416 | writel(0, adapter->hw.hw_addr + rx_ring->tail); | |
1417 | } | |
1418 | ||
1419 | /** | |
1420 | * ixgbe_clean_tx_ring - Free Tx Buffers | |
1421 | * @adapter: board private structure | |
1422 | * @tx_ring: ring to be cleaned | |
1423 | **/ | |
1424 | static void ixgbe_clean_tx_ring(struct ixgbe_adapter *adapter, | |
1425 | struct ixgbe_ring *tx_ring) | |
1426 | { | |
1427 | struct ixgbe_tx_buffer *tx_buffer_info; | |
1428 | unsigned long size; | |
1429 | unsigned int i; | |
1430 | ||
1431 | /* Free all the Tx ring sk_buffs */ | |
1432 | ||
1433 | for (i = 0; i < tx_ring->count; i++) { | |
1434 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; | |
1435 | ixgbe_unmap_and_free_tx_resource(adapter, tx_buffer_info); | |
1436 | } | |
1437 | ||
1438 | size = sizeof(struct ixgbe_tx_buffer) * tx_ring->count; | |
1439 | memset(tx_ring->tx_buffer_info, 0, size); | |
1440 | ||
1441 | /* Zero out the descriptor ring */ | |
1442 | memset(tx_ring->desc, 0, tx_ring->size); | |
1443 | ||
1444 | tx_ring->next_to_use = 0; | |
1445 | tx_ring->next_to_clean = 0; | |
1446 | ||
1447 | writel(0, adapter->hw.hw_addr + tx_ring->head); | |
1448 | writel(0, adapter->hw.hw_addr + tx_ring->tail); | |
1449 | } | |
1450 | ||
1451 | /** | |
1452 | * ixgbe_clean_all_tx_rings - Free Tx Buffers for all queues | |
1453 | * @adapter: board private structure | |
1454 | **/ | |
1455 | static void ixgbe_clean_all_tx_rings(struct ixgbe_adapter *adapter) | |
1456 | { | |
1457 | int i; | |
1458 | ||
1459 | for (i = 0; i < adapter->num_tx_queues; i++) | |
1460 | ixgbe_clean_tx_ring(adapter, &adapter->tx_ring[i]); | |
1461 | } | |
1462 | ||
1463 | /** | |
1464 | * ixgbe_clean_all_rx_rings - Free Rx Buffers for all queues | |
1465 | * @adapter: board private structure | |
1466 | **/ | |
1467 | static void ixgbe_clean_all_rx_rings(struct ixgbe_adapter *adapter) | |
1468 | { | |
1469 | int i; | |
1470 | ||
1471 | for (i = 0; i < adapter->num_rx_queues; i++) | |
1472 | ixgbe_clean_rx_ring(adapter, &adapter->rx_ring[i]); | |
1473 | } | |
1474 | ||
1475 | void ixgbe_down(struct ixgbe_adapter *adapter) | |
1476 | { | |
1477 | struct net_device *netdev = adapter->netdev; | |
1478 | u32 rxctrl; | |
1479 | ||
1480 | /* signal that we are down to the interrupt handler */ | |
1481 | set_bit(__IXGBE_DOWN, &adapter->state); | |
1482 | ||
1483 | /* disable receives */ | |
1484 | rxctrl = IXGBE_READ_REG(&adapter->hw, IXGBE_RXCTRL); | |
1485 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_RXCTRL, | |
1486 | rxctrl & ~IXGBE_RXCTRL_RXEN); | |
1487 | ||
1488 | netif_tx_disable(netdev); | |
1489 | ||
1490 | /* disable transmits in the hardware */ | |
1491 | ||
1492 | /* flush both disables */ | |
1493 | IXGBE_WRITE_FLUSH(&adapter->hw); | |
1494 | msleep(10); | |
1495 | ||
49d85c50 | 1496 | napi_disable(&adapter->napi); |
49d85c50 | 1497 | |
9a799d71 AK |
1498 | ixgbe_irq_disable(adapter); |
1499 | ||
9a799d71 AK |
1500 | del_timer_sync(&adapter->watchdog_timer); |
1501 | ||
1502 | netif_carrier_off(netdev); | |
1503 | netif_stop_queue(netdev); | |
1504 | ||
1505 | ixgbe_reset(adapter); | |
1506 | ixgbe_clean_all_tx_rings(adapter); | |
1507 | ixgbe_clean_all_rx_rings(adapter); | |
1508 | ||
1509 | } | |
1510 | ||
1511 | static int ixgbe_suspend(struct pci_dev *pdev, pm_message_t state) | |
1512 | { | |
1513 | struct net_device *netdev = pci_get_drvdata(pdev); | |
1514 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
1515 | #ifdef CONFIG_PM | |
1516 | int retval = 0; | |
1517 | #endif | |
1518 | ||
1519 | netif_device_detach(netdev); | |
1520 | ||
1521 | if (netif_running(netdev)) { | |
1522 | ixgbe_down(adapter); | |
1523 | ixgbe_free_irq(adapter); | |
1524 | } | |
1525 | ||
1526 | #ifdef CONFIG_PM | |
1527 | retval = pci_save_state(pdev); | |
1528 | if (retval) | |
1529 | return retval; | |
1530 | #endif | |
1531 | ||
1532 | pci_enable_wake(pdev, PCI_D3hot, 0); | |
1533 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
1534 | ||
5eba3699 AV |
1535 | ixgbe_release_hw_control(adapter); |
1536 | ||
9a799d71 AK |
1537 | pci_disable_device(pdev); |
1538 | ||
1539 | pci_set_power_state(pdev, pci_choose_state(pdev, state)); | |
1540 | ||
1541 | return 0; | |
1542 | } | |
1543 | ||
1544 | static void ixgbe_shutdown(struct pci_dev *pdev) | |
1545 | { | |
1546 | ixgbe_suspend(pdev, PMSG_SUSPEND); | |
1547 | } | |
1548 | ||
1549 | /** | |
1550 | * ixgbe_clean - NAPI Rx polling callback | |
1551 | * @adapter: board private structure | |
1552 | **/ | |
1553 | static int ixgbe_clean(struct napi_struct *napi, int budget) | |
1554 | { | |
1555 | struct ixgbe_adapter *adapter = container_of(napi, | |
1556 | struct ixgbe_adapter, napi); | |
1557 | struct net_device *netdev = adapter->netdev; | |
d2c7ddd6 | 1558 | int tx_cleaned = 0, work_done = 0; |
9a799d71 | 1559 | |
9a799d71 | 1560 | /* In non-MSIX case, there is no multi-Tx/Rx queue */ |
d2c7ddd6 | 1561 | tx_cleaned = ixgbe_clean_tx_irq(adapter, adapter->tx_ring); |
9a799d71 AK |
1562 | ixgbe_clean_rx_irq(adapter, &adapter->rx_ring[0], &work_done, |
1563 | budget); | |
1564 | ||
d2c7ddd6 DM |
1565 | if (tx_cleaned) |
1566 | work_done = budget; | |
1567 | ||
53e52c72 DM |
1568 | /* If budget not fully consumed, exit the polling mode */ |
1569 | if (work_done < budget) { | |
9a799d71 | 1570 | netif_rx_complete(netdev, napi); |
d4f80882 AV |
1571 | if (!test_bit(__IXGBE_DOWN, &adapter->state)) |
1572 | ixgbe_irq_enable(adapter); | |
9a799d71 AK |
1573 | } |
1574 | ||
1575 | return work_done; | |
1576 | } | |
1577 | ||
1578 | /** | |
1579 | * ixgbe_tx_timeout - Respond to a Tx Hang | |
1580 | * @netdev: network interface device structure | |
1581 | **/ | |
1582 | static void ixgbe_tx_timeout(struct net_device *netdev) | |
1583 | { | |
1584 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
1585 | ||
1586 | /* Do the reset outside of interrupt context */ | |
1587 | schedule_work(&adapter->reset_task); | |
1588 | } | |
1589 | ||
1590 | static void ixgbe_reset_task(struct work_struct *work) | |
1591 | { | |
1592 | struct ixgbe_adapter *adapter; | |
1593 | adapter = container_of(work, struct ixgbe_adapter, reset_task); | |
1594 | ||
1595 | adapter->tx_timeout_count++; | |
1596 | ||
d4f80882 | 1597 | ixgbe_reinit_locked(adapter); |
9a799d71 AK |
1598 | } |
1599 | ||
1600 | /** | |
1601 | * ixgbe_alloc_queues - Allocate memory for all rings | |
1602 | * @adapter: board private structure to initialize | |
1603 | * | |
1604 | * We allocate one ring per queue at run-time since we don't know the | |
1605 | * number of queues at compile-time. The polling_netdev array is | |
1606 | * intended for Multiqueue, but should work fine with a single queue. | |
1607 | **/ | |
1608 | static int __devinit ixgbe_alloc_queues(struct ixgbe_adapter *adapter) | |
1609 | { | |
1610 | int i; | |
1611 | ||
1612 | adapter->tx_ring = kcalloc(adapter->num_tx_queues, | |
1613 | sizeof(struct ixgbe_ring), GFP_KERNEL); | |
1614 | if (!adapter->tx_ring) | |
1615 | return -ENOMEM; | |
1616 | ||
1617 | for (i = 0; i < adapter->num_tx_queues; i++) | |
1618 | adapter->tx_ring[i].count = IXGBE_DEFAULT_TXD; | |
1619 | ||
1620 | adapter->rx_ring = kcalloc(adapter->num_rx_queues, | |
1621 | sizeof(struct ixgbe_ring), GFP_KERNEL); | |
1622 | if (!adapter->rx_ring) { | |
1623 | kfree(adapter->tx_ring); | |
1624 | return -ENOMEM; | |
1625 | } | |
1626 | ||
1627 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
1628 | adapter->rx_ring[i].adapter = adapter; | |
1629 | adapter->rx_ring[i].itr_register = IXGBE_EITR(i); | |
1630 | adapter->rx_ring[i].count = IXGBE_DEFAULT_RXD; | |
1631 | } | |
1632 | ||
1633 | return 0; | |
1634 | } | |
1635 | ||
1636 | /** | |
1637 | * ixgbe_sw_init - Initialize general software structures (struct ixgbe_adapter) | |
1638 | * @adapter: board private structure to initialize | |
1639 | * | |
1640 | * ixgbe_sw_init initializes the Adapter private data structure. | |
1641 | * Fields are initialized based on PCI device information and | |
1642 | * OS network device settings (MTU size). | |
1643 | **/ | |
1644 | static int __devinit ixgbe_sw_init(struct ixgbe_adapter *adapter) | |
1645 | { | |
1646 | struct ixgbe_hw *hw = &adapter->hw; | |
1647 | struct pci_dev *pdev = adapter->pdev; | |
1648 | ||
1649 | /* default flow control settings */ | |
1650 | hw->fc.original_type = ixgbe_fc_full; | |
1651 | hw->fc.type = ixgbe_fc_full; | |
1652 | ||
1653 | hw->mac.link_mode_select = IXGBE_AUTOC_LMS_10G_LINK_NO_AN; | |
1654 | if (hw->mac.ops.reset(hw)) { | |
1655 | dev_err(&pdev->dev, "HW Init failed\n"); | |
1656 | return -EIO; | |
1657 | } | |
3957d63d AK |
1658 | if (hw->mac.ops.setup_link_speed(hw, IXGBE_LINK_SPEED_10GB_FULL, true, |
1659 | false)) { | |
9a799d71 AK |
1660 | dev_err(&pdev->dev, "Link Speed setup failed\n"); |
1661 | return -EIO; | |
1662 | } | |
1663 | ||
1664 | /* initialize eeprom parameters */ | |
1665 | if (ixgbe_init_eeprom(hw)) { | |
1666 | dev_err(&pdev->dev, "EEPROM initialization failed\n"); | |
1667 | return -EIO; | |
1668 | } | |
1669 | ||
1670 | /* Set the default values */ | |
1671 | adapter->num_rx_queues = IXGBE_DEFAULT_RXQ; | |
1672 | adapter->num_tx_queues = 1; | |
1673 | adapter->flags |= IXGBE_FLAG_RX_CSUM_ENABLED; | |
1674 | ||
1675 | if (ixgbe_alloc_queues(adapter)) { | |
1676 | dev_err(&pdev->dev, "Unable to allocate memory for queues\n"); | |
1677 | return -ENOMEM; | |
1678 | } | |
1679 | ||
9a799d71 AK |
1680 | set_bit(__IXGBE_DOWN, &adapter->state); |
1681 | ||
1682 | return 0; | |
1683 | } | |
1684 | ||
1685 | /** | |
1686 | * ixgbe_setup_tx_resources - allocate Tx resources (Descriptors) | |
1687 | * @adapter: board private structure | |
1688 | * @txdr: tx descriptor ring (for a specific queue) to setup | |
1689 | * | |
1690 | * Return 0 on success, negative on failure | |
1691 | **/ | |
1692 | int ixgbe_setup_tx_resources(struct ixgbe_adapter *adapter, | |
1693 | struct ixgbe_ring *txdr) | |
1694 | { | |
1695 | struct pci_dev *pdev = adapter->pdev; | |
1696 | int size; | |
1697 | ||
1698 | size = sizeof(struct ixgbe_tx_buffer) * txdr->count; | |
1699 | txdr->tx_buffer_info = vmalloc(size); | |
1700 | if (!txdr->tx_buffer_info) { | |
1701 | DPRINTK(PROBE, ERR, | |
1702 | "Unable to allocate memory for the transmit descriptor ring\n"); | |
1703 | return -ENOMEM; | |
1704 | } | |
1705 | memset(txdr->tx_buffer_info, 0, size); | |
1706 | ||
1707 | /* round up to nearest 4K */ | |
1708 | txdr->size = txdr->count * sizeof(union ixgbe_adv_tx_desc); | |
1709 | txdr->size = ALIGN(txdr->size, 4096); | |
1710 | ||
1711 | txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma); | |
1712 | if (!txdr->desc) { | |
1713 | vfree(txdr->tx_buffer_info); | |
1714 | DPRINTK(PROBE, ERR, | |
1715 | "Memory allocation failed for the tx desc ring\n"); | |
1716 | return -ENOMEM; | |
1717 | } | |
1718 | ||
1719 | txdr->adapter = adapter; | |
1720 | txdr->next_to_use = 0; | |
1721 | txdr->next_to_clean = 0; | |
1722 | txdr->work_limit = txdr->count; | |
9a799d71 AK |
1723 | |
1724 | return 0; | |
1725 | } | |
1726 | ||
1727 | /** | |
1728 | * ixgbe_setup_rx_resources - allocate Rx resources (Descriptors) | |
1729 | * @adapter: board private structure | |
1730 | * @rxdr: rx descriptor ring (for a specific queue) to setup | |
1731 | * | |
1732 | * Returns 0 on success, negative on failure | |
1733 | **/ | |
1734 | int ixgbe_setup_rx_resources(struct ixgbe_adapter *adapter, | |
1735 | struct ixgbe_ring *rxdr) | |
1736 | { | |
1737 | struct pci_dev *pdev = adapter->pdev; | |
1738 | int size, desc_len; | |
1739 | ||
1740 | size = sizeof(struct ixgbe_rx_buffer) * rxdr->count; | |
1741 | rxdr->rx_buffer_info = vmalloc(size); | |
1742 | if (!rxdr->rx_buffer_info) { | |
1743 | DPRINTK(PROBE, ERR, | |
1744 | "vmalloc allocation failed for the rx desc ring\n"); | |
1745 | return -ENOMEM; | |
1746 | } | |
1747 | memset(rxdr->rx_buffer_info, 0, size); | |
1748 | ||
1749 | desc_len = sizeof(union ixgbe_adv_rx_desc); | |
1750 | ||
1751 | /* Round up to nearest 4K */ | |
1752 | rxdr->size = rxdr->count * desc_len; | |
1753 | rxdr->size = ALIGN(rxdr->size, 4096); | |
1754 | ||
1755 | rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma); | |
1756 | ||
1757 | if (!rxdr->desc) { | |
1758 | DPRINTK(PROBE, ERR, | |
1759 | "Memory allocation failed for the rx desc ring\n"); | |
1760 | vfree(rxdr->rx_buffer_info); | |
1761 | return -ENOMEM; | |
1762 | } | |
1763 | ||
1764 | rxdr->next_to_clean = 0; | |
1765 | rxdr->next_to_use = 0; | |
1766 | rxdr->adapter = adapter; | |
1767 | ||
1768 | return 0; | |
1769 | } | |
1770 | ||
1771 | /** | |
1772 | * ixgbe_free_tx_resources - Free Tx Resources per Queue | |
1773 | * @adapter: board private structure | |
1774 | * @tx_ring: Tx descriptor ring for a specific queue | |
1775 | * | |
1776 | * Free all transmit software resources | |
1777 | **/ | |
1778 | static void ixgbe_free_tx_resources(struct ixgbe_adapter *adapter, | |
1779 | struct ixgbe_ring *tx_ring) | |
1780 | { | |
1781 | struct pci_dev *pdev = adapter->pdev; | |
1782 | ||
1783 | ixgbe_clean_tx_ring(adapter, tx_ring); | |
1784 | ||
1785 | vfree(tx_ring->tx_buffer_info); | |
1786 | tx_ring->tx_buffer_info = NULL; | |
1787 | ||
1788 | pci_free_consistent(pdev, tx_ring->size, tx_ring->desc, tx_ring->dma); | |
1789 | ||
1790 | tx_ring->desc = NULL; | |
1791 | } | |
1792 | ||
1793 | /** | |
1794 | * ixgbe_free_all_tx_resources - Free Tx Resources for All Queues | |
1795 | * @adapter: board private structure | |
1796 | * | |
1797 | * Free all transmit software resources | |
1798 | **/ | |
1799 | static void ixgbe_free_all_tx_resources(struct ixgbe_adapter *adapter) | |
1800 | { | |
1801 | int i; | |
1802 | ||
1803 | for (i = 0; i < adapter->num_tx_queues; i++) | |
1804 | ixgbe_free_tx_resources(adapter, &adapter->tx_ring[i]); | |
1805 | } | |
1806 | ||
1807 | /** | |
1808 | * ixgbe_free_rx_resources - Free Rx Resources | |
1809 | * @adapter: board private structure | |
1810 | * @rx_ring: ring to clean the resources from | |
1811 | * | |
1812 | * Free all receive software resources | |
1813 | **/ | |
1814 | static void ixgbe_free_rx_resources(struct ixgbe_adapter *adapter, | |
1815 | struct ixgbe_ring *rx_ring) | |
1816 | { | |
1817 | struct pci_dev *pdev = adapter->pdev; | |
1818 | ||
1819 | ixgbe_clean_rx_ring(adapter, rx_ring); | |
1820 | ||
1821 | vfree(rx_ring->rx_buffer_info); | |
1822 | rx_ring->rx_buffer_info = NULL; | |
1823 | ||
1824 | pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma); | |
1825 | ||
1826 | rx_ring->desc = NULL; | |
1827 | } | |
1828 | ||
1829 | /** | |
1830 | * ixgbe_free_all_rx_resources - Free Rx Resources for All Queues | |
1831 | * @adapter: board private structure | |
1832 | * | |
1833 | * Free all receive software resources | |
1834 | **/ | |
1835 | static void ixgbe_free_all_rx_resources(struct ixgbe_adapter *adapter) | |
1836 | { | |
1837 | int i; | |
1838 | ||
1839 | for (i = 0; i < adapter->num_rx_queues; i++) | |
1840 | ixgbe_free_rx_resources(adapter, &adapter->rx_ring[i]); | |
1841 | } | |
1842 | ||
1843 | /** | |
1844 | * ixgbe_setup_all_tx_resources - wrapper to allocate Tx resources | |
1845 | * (Descriptors) for all queues | |
1846 | * @adapter: board private structure | |
1847 | * | |
1848 | * If this function returns with an error, then it's possible one or | |
1849 | * more of the rings is populated (while the rest are not). It is the | |
1850 | * callers duty to clean those orphaned rings. | |
1851 | * | |
1852 | * Return 0 on success, negative on failure | |
1853 | **/ | |
1854 | static int ixgbe_setup_all_tx_resources(struct ixgbe_adapter *adapter) | |
1855 | { | |
1856 | int i, err = 0; | |
1857 | ||
1858 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
1859 | err = ixgbe_setup_tx_resources(adapter, &adapter->tx_ring[i]); | |
1860 | if (err) { | |
1861 | DPRINTK(PROBE, ERR, | |
1862 | "Allocation for Tx Queue %u failed\n", i); | |
1863 | break; | |
1864 | } | |
1865 | } | |
1866 | ||
1867 | return err; | |
1868 | } | |
1869 | ||
1870 | /** | |
1871 | * ixgbe_setup_all_rx_resources - wrapper to allocate Rx resources | |
1872 | * (Descriptors) for all queues | |
1873 | * @adapter: board private structure | |
1874 | * | |
1875 | * If this function returns with an error, then it's possible one or | |
1876 | * more of the rings is populated (while the rest are not). It is the | |
1877 | * callers duty to clean those orphaned rings. | |
1878 | * | |
1879 | * Return 0 on success, negative on failure | |
1880 | **/ | |
1881 | ||
1882 | static int ixgbe_setup_all_rx_resources(struct ixgbe_adapter *adapter) | |
1883 | { | |
1884 | int i, err = 0; | |
1885 | ||
1886 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
1887 | err = ixgbe_setup_rx_resources(adapter, &adapter->rx_ring[i]); | |
1888 | if (err) { | |
1889 | DPRINTK(PROBE, ERR, | |
1890 | "Allocation for Rx Queue %u failed\n", i); | |
1891 | break; | |
1892 | } | |
1893 | } | |
1894 | ||
1895 | return err; | |
1896 | } | |
1897 | ||
1898 | /** | |
1899 | * ixgbe_change_mtu - Change the Maximum Transfer Unit | |
1900 | * @netdev: network interface device structure | |
1901 | * @new_mtu: new value for maximum frame size | |
1902 | * | |
1903 | * Returns 0 on success, negative on failure | |
1904 | **/ | |
1905 | static int ixgbe_change_mtu(struct net_device *netdev, int new_mtu) | |
1906 | { | |
1907 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
1908 | int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN; | |
1909 | ||
1910 | if ((max_frame < (ETH_ZLEN + ETH_FCS_LEN)) || | |
1911 | (max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE)) | |
1912 | return -EINVAL; | |
1913 | ||
1914 | netdev->mtu = new_mtu; | |
1915 | ||
d4f80882 AV |
1916 | if (netif_running(netdev)) |
1917 | ixgbe_reinit_locked(adapter); | |
9a799d71 AK |
1918 | |
1919 | return 0; | |
1920 | } | |
1921 | ||
1922 | /** | |
1923 | * ixgbe_open - Called when a network interface is made active | |
1924 | * @netdev: network interface device structure | |
1925 | * | |
1926 | * Returns 0 on success, negative value on failure | |
1927 | * | |
1928 | * The open entry point is called when a network interface is made | |
1929 | * active by the system (IFF_UP). At this point all resources needed | |
1930 | * for transmit and receive operations are allocated, the interrupt | |
1931 | * handler is registered with the OS, the watchdog timer is started, | |
1932 | * and the stack is notified that the interface is ready. | |
1933 | **/ | |
1934 | static int ixgbe_open(struct net_device *netdev) | |
1935 | { | |
1936 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
1937 | int err; | |
9a799d71 | 1938 | u32 num_rx_queues = adapter->num_rx_queues; |
4bebfaa5 AK |
1939 | |
1940 | /* disallow open during test */ | |
1941 | if (test_bit(__IXGBE_TESTING, &adapter->state)) | |
1942 | return -EBUSY; | |
9a799d71 | 1943 | |
9a799d71 AK |
1944 | try_intr_reinit: |
1945 | /* allocate transmit descriptors */ | |
1946 | err = ixgbe_setup_all_tx_resources(adapter); | |
1947 | if (err) | |
1948 | goto err_setup_tx; | |
1949 | ||
1950 | if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED)) { | |
1951 | num_rx_queues = 1; | |
1952 | adapter->num_rx_queues = num_rx_queues; | |
1953 | } | |
1954 | ||
1955 | /* allocate receive descriptors */ | |
1956 | err = ixgbe_setup_all_rx_resources(adapter); | |
1957 | if (err) | |
1958 | goto err_setup_rx; | |
1959 | ||
1960 | ixgbe_configure(adapter); | |
1961 | ||
1962 | err = ixgbe_request_irq(adapter, &num_rx_queues); | |
1963 | if (err) | |
1964 | goto err_req_irq; | |
1965 | ||
1966 | /* ixgbe_request might have reduced num_rx_queues */ | |
1967 | if (num_rx_queues < adapter->num_rx_queues) { | |
1968 | /* We didn't get MSI-X, so we need to release everything, | |
1969 | * set our Rx queue count to num_rx_queues, and redo the | |
1970 | * whole init process. | |
1971 | */ | |
1972 | ixgbe_free_irq(adapter); | |
1973 | if (adapter->flags & IXGBE_FLAG_MSI_ENABLED) { | |
1974 | pci_disable_msi(adapter->pdev); | |
1975 | adapter->flags &= ~IXGBE_FLAG_MSI_ENABLED; | |
1976 | } | |
1977 | ixgbe_free_all_rx_resources(adapter); | |
1978 | ixgbe_free_all_tx_resources(adapter); | |
1979 | adapter->num_rx_queues = num_rx_queues; | |
1980 | ||
1981 | /* Reset the hardware, and start over. */ | |
1982 | ixgbe_reset(adapter); | |
1983 | ||
1984 | goto try_intr_reinit; | |
1985 | } | |
1986 | ||
1987 | err = ixgbe_up_complete(adapter); | |
1988 | if (err) | |
1989 | goto err_up; | |
1990 | ||
1991 | return 0; | |
1992 | ||
1993 | err_up: | |
5eba3699 | 1994 | ixgbe_release_hw_control(adapter); |
9a799d71 AK |
1995 | ixgbe_free_irq(adapter); |
1996 | err_req_irq: | |
1997 | ixgbe_free_all_rx_resources(adapter); | |
1998 | err_setup_rx: | |
1999 | ixgbe_free_all_tx_resources(adapter); | |
2000 | err_setup_tx: | |
2001 | ixgbe_reset(adapter); | |
2002 | ||
2003 | return err; | |
2004 | } | |
2005 | ||
2006 | /** | |
2007 | * ixgbe_close - Disables a network interface | |
2008 | * @netdev: network interface device structure | |
2009 | * | |
2010 | * Returns 0, this is not allowed to fail | |
2011 | * | |
2012 | * The close entry point is called when an interface is de-activated | |
2013 | * by the OS. The hardware is still under the drivers control, but | |
2014 | * needs to be disabled. A global MAC reset is issued to stop the | |
2015 | * hardware, and all transmit and receive resources are freed. | |
2016 | **/ | |
2017 | static int ixgbe_close(struct net_device *netdev) | |
2018 | { | |
2019 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
9a799d71 AK |
2020 | |
2021 | ixgbe_down(adapter); | |
2022 | ixgbe_free_irq(adapter); | |
2023 | ||
2024 | ixgbe_free_all_tx_resources(adapter); | |
2025 | ixgbe_free_all_rx_resources(adapter); | |
2026 | ||
5eba3699 | 2027 | ixgbe_release_hw_control(adapter); |
9a799d71 AK |
2028 | |
2029 | return 0; | |
2030 | } | |
2031 | ||
2032 | /** | |
2033 | * ixgbe_update_stats - Update the board statistics counters. | |
2034 | * @adapter: board private structure | |
2035 | **/ | |
2036 | void ixgbe_update_stats(struct ixgbe_adapter *adapter) | |
2037 | { | |
2038 | struct ixgbe_hw *hw = &adapter->hw; | |
6f11eef7 AV |
2039 | u64 total_mpc = 0; |
2040 | u32 i, missed_rx = 0, mpc, bprc, lxon, lxoff, xon_off_tot; | |
9a799d71 AK |
2041 | |
2042 | adapter->stats.crcerrs += IXGBE_READ_REG(hw, IXGBE_CRCERRS); | |
6f11eef7 AV |
2043 | for (i = 0; i < 8; i++) { |
2044 | /* for packet buffers not used, the register should read 0 */ | |
2045 | mpc = IXGBE_READ_REG(hw, IXGBE_MPC(i)); | |
2046 | missed_rx += mpc; | |
2047 | adapter->stats.mpc[i] += mpc; | |
2048 | total_mpc += adapter->stats.mpc[i]; | |
2049 | adapter->stats.rnbc[i] += IXGBE_READ_REG(hw, IXGBE_RNBC(i)); | |
2050 | } | |
2051 | adapter->stats.gprc += IXGBE_READ_REG(hw, IXGBE_GPRC); | |
2052 | /* work around hardware counting issue */ | |
2053 | adapter->stats.gprc -= missed_rx; | |
2054 | ||
2055 | /* 82598 hardware only has a 32 bit counter in the high register */ | |
9a799d71 | 2056 | adapter->stats.gorc += IXGBE_READ_REG(hw, IXGBE_GORCH); |
6f11eef7 AV |
2057 | adapter->stats.gotc += IXGBE_READ_REG(hw, IXGBE_GOTCH); |
2058 | adapter->stats.tor += IXGBE_READ_REG(hw, IXGBE_TORH); | |
9a799d71 AK |
2059 | bprc = IXGBE_READ_REG(hw, IXGBE_BPRC); |
2060 | adapter->stats.bprc += bprc; | |
2061 | adapter->stats.mprc += IXGBE_READ_REG(hw, IXGBE_MPRC); | |
2062 | adapter->stats.mprc -= bprc; | |
2063 | adapter->stats.roc += IXGBE_READ_REG(hw, IXGBE_ROC); | |
2064 | adapter->stats.prc64 += IXGBE_READ_REG(hw, IXGBE_PRC64); | |
2065 | adapter->stats.prc127 += IXGBE_READ_REG(hw, IXGBE_PRC127); | |
2066 | adapter->stats.prc255 += IXGBE_READ_REG(hw, IXGBE_PRC255); | |
2067 | adapter->stats.prc511 += IXGBE_READ_REG(hw, IXGBE_PRC511); | |
2068 | adapter->stats.prc1023 += IXGBE_READ_REG(hw, IXGBE_PRC1023); | |
2069 | adapter->stats.prc1522 += IXGBE_READ_REG(hw, IXGBE_PRC1522); | |
9a799d71 AK |
2070 | adapter->stats.rlec += IXGBE_READ_REG(hw, IXGBE_RLEC); |
2071 | adapter->stats.lxonrxc += IXGBE_READ_REG(hw, IXGBE_LXONRXC); | |
9a799d71 | 2072 | adapter->stats.lxoffrxc += IXGBE_READ_REG(hw, IXGBE_LXOFFRXC); |
6f11eef7 AV |
2073 | lxon = IXGBE_READ_REG(hw, IXGBE_LXONTXC); |
2074 | adapter->stats.lxontxc += lxon; | |
2075 | lxoff = IXGBE_READ_REG(hw, IXGBE_LXOFFTXC); | |
2076 | adapter->stats.lxofftxc += lxoff; | |
9a799d71 AK |
2077 | adapter->stats.ruc += IXGBE_READ_REG(hw, IXGBE_RUC); |
2078 | adapter->stats.gptc += IXGBE_READ_REG(hw, IXGBE_GPTC); | |
6f11eef7 AV |
2079 | adapter->stats.mptc += IXGBE_READ_REG(hw, IXGBE_MPTC); |
2080 | /* | |
2081 | * 82598 errata - tx of flow control packets is included in tx counters | |
2082 | */ | |
2083 | xon_off_tot = lxon + lxoff; | |
2084 | adapter->stats.gptc -= xon_off_tot; | |
2085 | adapter->stats.mptc -= xon_off_tot; | |
2086 | adapter->stats.gotc -= (xon_off_tot * (ETH_ZLEN + ETH_FCS_LEN)); | |
9a799d71 AK |
2087 | adapter->stats.ruc += IXGBE_READ_REG(hw, IXGBE_RUC); |
2088 | adapter->stats.rfc += IXGBE_READ_REG(hw, IXGBE_RFC); | |
2089 | adapter->stats.rjc += IXGBE_READ_REG(hw, IXGBE_RJC); | |
9a799d71 AK |
2090 | adapter->stats.tpr += IXGBE_READ_REG(hw, IXGBE_TPR); |
2091 | adapter->stats.ptc64 += IXGBE_READ_REG(hw, IXGBE_PTC64); | |
6f11eef7 | 2092 | adapter->stats.ptc64 -= xon_off_tot; |
9a799d71 AK |
2093 | adapter->stats.ptc127 += IXGBE_READ_REG(hw, IXGBE_PTC127); |
2094 | adapter->stats.ptc255 += IXGBE_READ_REG(hw, IXGBE_PTC255); | |
2095 | adapter->stats.ptc511 += IXGBE_READ_REG(hw, IXGBE_PTC511); | |
2096 | adapter->stats.ptc1023 += IXGBE_READ_REG(hw, IXGBE_PTC1023); | |
2097 | adapter->stats.ptc1522 += IXGBE_READ_REG(hw, IXGBE_PTC1522); | |
9a799d71 AK |
2098 | adapter->stats.bptc += IXGBE_READ_REG(hw, IXGBE_BPTC); |
2099 | ||
2100 | /* Fill out the OS statistics structure */ | |
9a799d71 AK |
2101 | adapter->net_stats.multicast = adapter->stats.mprc; |
2102 | ||
2103 | /* Rx Errors */ | |
2104 | adapter->net_stats.rx_errors = adapter->stats.crcerrs + | |
2105 | adapter->stats.rlec; | |
2106 | adapter->net_stats.rx_dropped = 0; | |
2107 | adapter->net_stats.rx_length_errors = adapter->stats.rlec; | |
2108 | adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs; | |
6f11eef7 | 2109 | adapter->net_stats.rx_missed_errors = total_mpc; |
9a799d71 AK |
2110 | } |
2111 | ||
2112 | /** | |
2113 | * ixgbe_watchdog - Timer Call-back | |
2114 | * @data: pointer to adapter cast into an unsigned long | |
2115 | **/ | |
2116 | static void ixgbe_watchdog(unsigned long data) | |
2117 | { | |
2118 | struct ixgbe_adapter *adapter = (struct ixgbe_adapter *)data; | |
2119 | struct net_device *netdev = adapter->netdev; | |
2120 | bool link_up; | |
2121 | u32 link_speed = 0; | |
2122 | ||
3957d63d | 2123 | adapter->hw.mac.ops.check_link(&adapter->hw, &(link_speed), &link_up); |
9a799d71 AK |
2124 | |
2125 | if (link_up) { | |
2126 | if (!netif_carrier_ok(netdev)) { | |
2127 | u32 frctl = IXGBE_READ_REG(&adapter->hw, IXGBE_FCTRL); | |
2128 | u32 rmcs = IXGBE_READ_REG(&adapter->hw, IXGBE_RMCS); | |
2129 | #define FLOW_RX (frctl & IXGBE_FCTRL_RFCE) | |
2130 | #define FLOW_TX (rmcs & IXGBE_RMCS_TFCE_802_3X) | |
2131 | DPRINTK(LINK, INFO, "NIC Link is Up %s, " | |
2132 | "Flow Control: %s\n", | |
2133 | (link_speed == IXGBE_LINK_SPEED_10GB_FULL ? | |
2134 | "10 Gbps" : | |
2135 | (link_speed == IXGBE_LINK_SPEED_1GB_FULL ? | |
2136 | "1 Gpbs" : "unknown speed")), | |
2137 | ((FLOW_RX && FLOW_TX) ? "RX/TX" : | |
2138 | (FLOW_RX ? "RX" : | |
2139 | (FLOW_TX ? "TX" : "None")))); | |
2140 | ||
2141 | netif_carrier_on(netdev); | |
2142 | netif_wake_queue(netdev); | |
2143 | } else { | |
2144 | /* Force detection of hung controller */ | |
2145 | adapter->detect_tx_hung = true; | |
2146 | } | |
2147 | } else { | |
2148 | if (netif_carrier_ok(netdev)) { | |
2149 | DPRINTK(LINK, INFO, "NIC Link is Down\n"); | |
2150 | netif_carrier_off(netdev); | |
2151 | netif_stop_queue(netdev); | |
2152 | } | |
2153 | } | |
2154 | ||
2155 | ixgbe_update_stats(adapter); | |
2156 | ||
2157 | /* Reset the timer */ | |
2158 | if (!test_bit(__IXGBE_DOWN, &adapter->state)) | |
2159 | mod_timer(&adapter->watchdog_timer, | |
2160 | round_jiffies(jiffies + 2 * HZ)); | |
2161 | } | |
2162 | ||
9a799d71 AK |
2163 | static int ixgbe_tso(struct ixgbe_adapter *adapter, |
2164 | struct ixgbe_ring *tx_ring, struct sk_buff *skb, | |
2165 | u32 tx_flags, u8 *hdr_len) | |
2166 | { | |
2167 | struct ixgbe_adv_tx_context_desc *context_desc; | |
2168 | unsigned int i; | |
2169 | int err; | |
2170 | struct ixgbe_tx_buffer *tx_buffer_info; | |
2171 | u32 vlan_macip_lens = 0, type_tucmd_mlhl = 0; | |
2172 | u32 mss_l4len_idx = 0, l4len; | |
2173 | *hdr_len = 0; | |
2174 | ||
2175 | if (skb_is_gso(skb)) { | |
2176 | if (skb_header_cloned(skb)) { | |
2177 | err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); | |
2178 | if (err) | |
2179 | return err; | |
2180 | } | |
2181 | l4len = tcp_hdrlen(skb); | |
2182 | *hdr_len += l4len; | |
2183 | ||
8327d000 | 2184 | if (skb->protocol == htons(ETH_P_IP)) { |
9a799d71 AK |
2185 | struct iphdr *iph = ip_hdr(skb); |
2186 | iph->tot_len = 0; | |
2187 | iph->check = 0; | |
2188 | tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, | |
2189 | iph->daddr, 0, | |
2190 | IPPROTO_TCP, | |
2191 | 0); | |
2192 | adapter->hw_tso_ctxt++; | |
2193 | } else if (skb_shinfo(skb)->gso_type == SKB_GSO_TCPV6) { | |
2194 | ipv6_hdr(skb)->payload_len = 0; | |
2195 | tcp_hdr(skb)->check = | |
2196 | ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, | |
2197 | &ipv6_hdr(skb)->daddr, | |
2198 | 0, IPPROTO_TCP, 0); | |
2199 | adapter->hw_tso6_ctxt++; | |
2200 | } | |
2201 | ||
2202 | i = tx_ring->next_to_use; | |
2203 | ||
2204 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; | |
2205 | context_desc = IXGBE_TX_CTXTDESC_ADV(*tx_ring, i); | |
2206 | ||
2207 | /* VLAN MACLEN IPLEN */ | |
2208 | if (tx_flags & IXGBE_TX_FLAGS_VLAN) | |
2209 | vlan_macip_lens |= | |
2210 | (tx_flags & IXGBE_TX_FLAGS_VLAN_MASK); | |
2211 | vlan_macip_lens |= ((skb_network_offset(skb)) << | |
2212 | IXGBE_ADVTXD_MACLEN_SHIFT); | |
2213 | *hdr_len += skb_network_offset(skb); | |
2214 | vlan_macip_lens |= | |
2215 | (skb_transport_header(skb) - skb_network_header(skb)); | |
2216 | *hdr_len += | |
2217 | (skb_transport_header(skb) - skb_network_header(skb)); | |
2218 | context_desc->vlan_macip_lens = cpu_to_le32(vlan_macip_lens); | |
2219 | context_desc->seqnum_seed = 0; | |
2220 | ||
2221 | /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */ | |
2222 | type_tucmd_mlhl |= (IXGBE_TXD_CMD_DEXT | | |
2223 | IXGBE_ADVTXD_DTYP_CTXT); | |
2224 | ||
8327d000 | 2225 | if (skb->protocol == htons(ETH_P_IP)) |
9a799d71 AK |
2226 | type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_IPV4; |
2227 | type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_L4T_TCP; | |
2228 | context_desc->type_tucmd_mlhl = cpu_to_le32(type_tucmd_mlhl); | |
2229 | ||
2230 | /* MSS L4LEN IDX */ | |
2231 | mss_l4len_idx |= | |
2232 | (skb_shinfo(skb)->gso_size << IXGBE_ADVTXD_MSS_SHIFT); | |
2233 | mss_l4len_idx |= (l4len << IXGBE_ADVTXD_L4LEN_SHIFT); | |
2234 | context_desc->mss_l4len_idx = cpu_to_le32(mss_l4len_idx); | |
2235 | ||
2236 | tx_buffer_info->time_stamp = jiffies; | |
2237 | tx_buffer_info->next_to_watch = i; | |
2238 | ||
2239 | i++; | |
2240 | if (i == tx_ring->count) | |
2241 | i = 0; | |
2242 | tx_ring->next_to_use = i; | |
2243 | ||
2244 | return true; | |
2245 | } | |
2246 | return false; | |
2247 | } | |
2248 | ||
2249 | static bool ixgbe_tx_csum(struct ixgbe_adapter *adapter, | |
2250 | struct ixgbe_ring *tx_ring, | |
2251 | struct sk_buff *skb, u32 tx_flags) | |
2252 | { | |
2253 | struct ixgbe_adv_tx_context_desc *context_desc; | |
2254 | unsigned int i; | |
2255 | struct ixgbe_tx_buffer *tx_buffer_info; | |
2256 | u32 vlan_macip_lens = 0, type_tucmd_mlhl = 0; | |
2257 | ||
2258 | if (skb->ip_summed == CHECKSUM_PARTIAL || | |
2259 | (tx_flags & IXGBE_TX_FLAGS_VLAN)) { | |
2260 | i = tx_ring->next_to_use; | |
2261 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; | |
2262 | context_desc = IXGBE_TX_CTXTDESC_ADV(*tx_ring, i); | |
2263 | ||
2264 | if (tx_flags & IXGBE_TX_FLAGS_VLAN) | |
2265 | vlan_macip_lens |= | |
2266 | (tx_flags & IXGBE_TX_FLAGS_VLAN_MASK); | |
2267 | vlan_macip_lens |= (skb_network_offset(skb) << | |
2268 | IXGBE_ADVTXD_MACLEN_SHIFT); | |
2269 | if (skb->ip_summed == CHECKSUM_PARTIAL) | |
2270 | vlan_macip_lens |= (skb_transport_header(skb) - | |
2271 | skb_network_header(skb)); | |
2272 | ||
2273 | context_desc->vlan_macip_lens = cpu_to_le32(vlan_macip_lens); | |
2274 | context_desc->seqnum_seed = 0; | |
2275 | ||
2276 | type_tucmd_mlhl |= (IXGBE_TXD_CMD_DEXT | | |
2277 | IXGBE_ADVTXD_DTYP_CTXT); | |
2278 | ||
2279 | if (skb->ip_summed == CHECKSUM_PARTIAL) { | |
8327d000 | 2280 | if (skb->protocol == htons(ETH_P_IP)) |
9a799d71 AK |
2281 | type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_IPV4; |
2282 | ||
2283 | if (skb->sk->sk_protocol == IPPROTO_TCP) | |
2284 | type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_L4T_TCP; | |
2285 | } | |
2286 | ||
2287 | context_desc->type_tucmd_mlhl = cpu_to_le32(type_tucmd_mlhl); | |
2288 | context_desc->mss_l4len_idx = 0; | |
2289 | ||
2290 | tx_buffer_info->time_stamp = jiffies; | |
2291 | tx_buffer_info->next_to_watch = i; | |
2292 | adapter->hw_csum_tx_good++; | |
2293 | i++; | |
2294 | if (i == tx_ring->count) | |
2295 | i = 0; | |
2296 | tx_ring->next_to_use = i; | |
2297 | ||
2298 | return true; | |
2299 | } | |
2300 | return false; | |
2301 | } | |
2302 | ||
2303 | static int ixgbe_tx_map(struct ixgbe_adapter *adapter, | |
2304 | struct ixgbe_ring *tx_ring, | |
2305 | struct sk_buff *skb, unsigned int first) | |
2306 | { | |
2307 | struct ixgbe_tx_buffer *tx_buffer_info; | |
2308 | unsigned int len = skb->len; | |
2309 | unsigned int offset = 0, size, count = 0, i; | |
2310 | unsigned int nr_frags = skb_shinfo(skb)->nr_frags; | |
2311 | unsigned int f; | |
2312 | ||
2313 | len -= skb->data_len; | |
2314 | ||
2315 | i = tx_ring->next_to_use; | |
2316 | ||
2317 | while (len) { | |
2318 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; | |
2319 | size = min(len, (uint)IXGBE_MAX_DATA_PER_TXD); | |
2320 | ||
2321 | tx_buffer_info->length = size; | |
2322 | tx_buffer_info->dma = pci_map_single(adapter->pdev, | |
2323 | skb->data + offset, | |
2324 | size, PCI_DMA_TODEVICE); | |
2325 | tx_buffer_info->time_stamp = jiffies; | |
2326 | tx_buffer_info->next_to_watch = i; | |
2327 | ||
2328 | len -= size; | |
2329 | offset += size; | |
2330 | count++; | |
2331 | i++; | |
2332 | if (i == tx_ring->count) | |
2333 | i = 0; | |
2334 | } | |
2335 | ||
2336 | for (f = 0; f < nr_frags; f++) { | |
2337 | struct skb_frag_struct *frag; | |
2338 | ||
2339 | frag = &skb_shinfo(skb)->frags[f]; | |
2340 | len = frag->size; | |
2341 | offset = frag->page_offset; | |
2342 | ||
2343 | while (len) { | |
2344 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; | |
2345 | size = min(len, (uint)IXGBE_MAX_DATA_PER_TXD); | |
2346 | ||
2347 | tx_buffer_info->length = size; | |
2348 | tx_buffer_info->dma = pci_map_page(adapter->pdev, | |
2349 | frag->page, | |
2350 | offset, | |
2351 | size, PCI_DMA_TODEVICE); | |
2352 | tx_buffer_info->time_stamp = jiffies; | |
2353 | tx_buffer_info->next_to_watch = i; | |
2354 | ||
2355 | len -= size; | |
2356 | offset += size; | |
2357 | count++; | |
2358 | i++; | |
2359 | if (i == tx_ring->count) | |
2360 | i = 0; | |
2361 | } | |
2362 | } | |
2363 | if (i == 0) | |
2364 | i = tx_ring->count - 1; | |
2365 | else | |
2366 | i = i - 1; | |
2367 | tx_ring->tx_buffer_info[i].skb = skb; | |
2368 | tx_ring->tx_buffer_info[first].next_to_watch = i; | |
2369 | ||
2370 | return count; | |
2371 | } | |
2372 | ||
2373 | static void ixgbe_tx_queue(struct ixgbe_adapter *adapter, | |
2374 | struct ixgbe_ring *tx_ring, | |
2375 | int tx_flags, int count, u32 paylen, u8 hdr_len) | |
2376 | { | |
2377 | union ixgbe_adv_tx_desc *tx_desc = NULL; | |
2378 | struct ixgbe_tx_buffer *tx_buffer_info; | |
2379 | u32 olinfo_status = 0, cmd_type_len = 0; | |
2380 | unsigned int i; | |
2381 | u32 txd_cmd = IXGBE_TXD_CMD_EOP | IXGBE_TXD_CMD_RS | IXGBE_TXD_CMD_IFCS; | |
2382 | ||
2383 | cmd_type_len |= IXGBE_ADVTXD_DTYP_DATA; | |
2384 | ||
2385 | cmd_type_len |= IXGBE_ADVTXD_DCMD_IFCS | IXGBE_ADVTXD_DCMD_DEXT; | |
2386 | ||
2387 | if (tx_flags & IXGBE_TX_FLAGS_VLAN) | |
2388 | cmd_type_len |= IXGBE_ADVTXD_DCMD_VLE; | |
2389 | ||
2390 | if (tx_flags & IXGBE_TX_FLAGS_TSO) { | |
2391 | cmd_type_len |= IXGBE_ADVTXD_DCMD_TSE; | |
2392 | ||
2393 | olinfo_status |= IXGBE_TXD_POPTS_TXSM << | |
2394 | IXGBE_ADVTXD_POPTS_SHIFT; | |
2395 | ||
2396 | if (tx_flags & IXGBE_TX_FLAGS_IPV4) | |
2397 | olinfo_status |= IXGBE_TXD_POPTS_IXSM << | |
2398 | IXGBE_ADVTXD_POPTS_SHIFT; | |
2399 | ||
2400 | } else if (tx_flags & IXGBE_TX_FLAGS_CSUM) | |
2401 | olinfo_status |= IXGBE_TXD_POPTS_TXSM << | |
2402 | IXGBE_ADVTXD_POPTS_SHIFT; | |
2403 | ||
2404 | olinfo_status |= ((paylen - hdr_len) << IXGBE_ADVTXD_PAYLEN_SHIFT); | |
2405 | ||
2406 | i = tx_ring->next_to_use; | |
2407 | while (count--) { | |
2408 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; | |
2409 | tx_desc = IXGBE_TX_DESC_ADV(*tx_ring, i); | |
2410 | tx_desc->read.buffer_addr = cpu_to_le64(tx_buffer_info->dma); | |
2411 | tx_desc->read.cmd_type_len = | |
2412 | cpu_to_le32(cmd_type_len | tx_buffer_info->length); | |
2413 | tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status); | |
2414 | ||
2415 | i++; | |
2416 | if (i == tx_ring->count) | |
2417 | i = 0; | |
2418 | } | |
2419 | ||
2420 | tx_desc->read.cmd_type_len |= cpu_to_le32(txd_cmd); | |
2421 | ||
2422 | /* | |
2423 | * Force memory writes to complete before letting h/w | |
2424 | * know there are new descriptors to fetch. (Only | |
2425 | * applicable for weak-ordered memory model archs, | |
2426 | * such as IA-64). | |
2427 | */ | |
2428 | wmb(); | |
2429 | ||
2430 | tx_ring->next_to_use = i; | |
2431 | writel(i, adapter->hw.hw_addr + tx_ring->tail); | |
2432 | } | |
2433 | ||
e092be60 AV |
2434 | static int __ixgbe_maybe_stop_tx(struct net_device *netdev, |
2435 | struct ixgbe_ring *tx_ring, int size) | |
2436 | { | |
2437 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
2438 | ||
2439 | netif_stop_queue(netdev); | |
2440 | /* Herbert's original patch had: | |
2441 | * smp_mb__after_netif_stop_queue(); | |
2442 | * but since that doesn't exist yet, just open code it. */ | |
2443 | smp_mb(); | |
2444 | ||
2445 | /* We need to check again in a case another CPU has just | |
2446 | * made room available. */ | |
2447 | if (likely(IXGBE_DESC_UNUSED(tx_ring) < size)) | |
2448 | return -EBUSY; | |
2449 | ||
2450 | /* A reprieve! - use start_queue because it doesn't call schedule */ | |
2451 | netif_wake_queue(netdev); | |
2452 | ++adapter->restart_queue; | |
2453 | return 0; | |
2454 | } | |
2455 | ||
2456 | static int ixgbe_maybe_stop_tx(struct net_device *netdev, | |
2457 | struct ixgbe_ring *tx_ring, int size) | |
2458 | { | |
2459 | if (likely(IXGBE_DESC_UNUSED(tx_ring) >= size)) | |
2460 | return 0; | |
2461 | return __ixgbe_maybe_stop_tx(netdev, tx_ring, size); | |
2462 | } | |
2463 | ||
2464 | ||
9a799d71 AK |
2465 | static int ixgbe_xmit_frame(struct sk_buff *skb, struct net_device *netdev) |
2466 | { | |
2467 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
2468 | struct ixgbe_ring *tx_ring; | |
2469 | unsigned int len = skb->len; | |
2470 | unsigned int first; | |
2471 | unsigned int tx_flags = 0; | |
9a799d71 AK |
2472 | u8 hdr_len; |
2473 | int tso; | |
2474 | unsigned int mss = 0; | |
2475 | int count = 0; | |
2476 | unsigned int f; | |
2477 | unsigned int nr_frags = skb_shinfo(skb)->nr_frags; | |
2478 | len -= skb->data_len; | |
2479 | ||
2480 | tx_ring = adapter->tx_ring; | |
2481 | ||
2482 | if (skb->len <= 0) { | |
2483 | dev_kfree_skb(skb); | |
2484 | return NETDEV_TX_OK; | |
2485 | } | |
2486 | mss = skb_shinfo(skb)->gso_size; | |
2487 | ||
2488 | if (mss) | |
2489 | count++; | |
2490 | else if (skb->ip_summed == CHECKSUM_PARTIAL) | |
2491 | count++; | |
2492 | ||
2493 | count += TXD_USE_COUNT(len); | |
2494 | for (f = 0; f < nr_frags; f++) | |
2495 | count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size); | |
2496 | ||
e092be60 | 2497 | if (ixgbe_maybe_stop_tx(netdev, tx_ring, count)) { |
9a799d71 | 2498 | adapter->tx_busy++; |
9a799d71 AK |
2499 | return NETDEV_TX_BUSY; |
2500 | } | |
9a799d71 AK |
2501 | if (adapter->vlgrp && vlan_tx_tag_present(skb)) { |
2502 | tx_flags |= IXGBE_TX_FLAGS_VLAN; | |
2503 | tx_flags |= (vlan_tx_tag_get(skb) << IXGBE_TX_FLAGS_VLAN_SHIFT); | |
2504 | } | |
2505 | ||
8327d000 | 2506 | if (skb->protocol == htons(ETH_P_IP)) |
9a799d71 AK |
2507 | tx_flags |= IXGBE_TX_FLAGS_IPV4; |
2508 | first = tx_ring->next_to_use; | |
2509 | tso = ixgbe_tso(adapter, tx_ring, skb, tx_flags, &hdr_len); | |
2510 | if (tso < 0) { | |
2511 | dev_kfree_skb_any(skb); | |
2512 | return NETDEV_TX_OK; | |
2513 | } | |
2514 | ||
2515 | if (tso) | |
2516 | tx_flags |= IXGBE_TX_FLAGS_TSO; | |
2517 | else if (ixgbe_tx_csum(adapter, tx_ring, skb, tx_flags) && | |
2518 | (skb->ip_summed == CHECKSUM_PARTIAL)) | |
2519 | tx_flags |= IXGBE_TX_FLAGS_CSUM; | |
2520 | ||
2521 | ixgbe_tx_queue(adapter, tx_ring, tx_flags, | |
2522 | ixgbe_tx_map(adapter, tx_ring, skb, first), | |
2523 | skb->len, hdr_len); | |
2524 | ||
2525 | netdev->trans_start = jiffies; | |
2526 | ||
e092be60 | 2527 | ixgbe_maybe_stop_tx(netdev, tx_ring, DESC_NEEDED); |
9a799d71 AK |
2528 | |
2529 | return NETDEV_TX_OK; | |
2530 | } | |
2531 | ||
2532 | /** | |
2533 | * ixgbe_get_stats - Get System Network Statistics | |
2534 | * @netdev: network interface device structure | |
2535 | * | |
2536 | * Returns the address of the device statistics structure. | |
2537 | * The statistics are actually updated from the timer callback. | |
2538 | **/ | |
2539 | static struct net_device_stats *ixgbe_get_stats(struct net_device *netdev) | |
2540 | { | |
2541 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
2542 | ||
2543 | /* only return the current stats */ | |
2544 | return &adapter->net_stats; | |
2545 | } | |
2546 | ||
2547 | /** | |
2548 | * ixgbe_set_mac - Change the Ethernet Address of the NIC | |
2549 | * @netdev: network interface device structure | |
2550 | * @p: pointer to an address structure | |
2551 | * | |
2552 | * Returns 0 on success, negative on failure | |
2553 | **/ | |
2554 | static int ixgbe_set_mac(struct net_device *netdev, void *p) | |
2555 | { | |
2556 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
2557 | struct sockaddr *addr = p; | |
2558 | ||
2559 | if (!is_valid_ether_addr(addr->sa_data)) | |
2560 | return -EADDRNOTAVAIL; | |
2561 | ||
2562 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
2563 | memcpy(adapter->hw.mac.addr, addr->sa_data, netdev->addr_len); | |
2564 | ||
2565 | ixgbe_set_rar(&adapter->hw, 0, adapter->hw.mac.addr, 0, IXGBE_RAH_AV); | |
2566 | ||
2567 | return 0; | |
2568 | } | |
2569 | ||
2570 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
2571 | /* | |
2572 | * Polling 'interrupt' - used by things like netconsole to send skbs | |
2573 | * without having to re-enable interrupts. It's not called while | |
2574 | * the interrupt routine is executing. | |
2575 | */ | |
2576 | static void ixgbe_netpoll(struct net_device *netdev) | |
2577 | { | |
2578 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
2579 | ||
2580 | disable_irq(adapter->pdev->irq); | |
2581 | adapter->flags |= IXGBE_FLAG_IN_NETPOLL; | |
2582 | ixgbe_intr(adapter->pdev->irq, netdev); | |
2583 | adapter->flags &= ~IXGBE_FLAG_IN_NETPOLL; | |
2584 | enable_irq(adapter->pdev->irq); | |
2585 | } | |
2586 | #endif | |
2587 | ||
2588 | /** | |
2589 | * ixgbe_probe - Device Initialization Routine | |
2590 | * @pdev: PCI device information struct | |
2591 | * @ent: entry in ixgbe_pci_tbl | |
2592 | * | |
2593 | * Returns 0 on success, negative on failure | |
2594 | * | |
2595 | * ixgbe_probe initializes an adapter identified by a pci_dev structure. | |
2596 | * The OS initialization, configuring of the adapter private structure, | |
2597 | * and a hardware reset occur. | |
2598 | **/ | |
2599 | static int __devinit ixgbe_probe(struct pci_dev *pdev, | |
2600 | const struct pci_device_id *ent) | |
2601 | { | |
2602 | struct net_device *netdev; | |
2603 | struct ixgbe_adapter *adapter = NULL; | |
2604 | struct ixgbe_hw *hw; | |
2605 | const struct ixgbe_info *ii = ixgbe_info_tbl[ent->driver_data]; | |
2606 | unsigned long mmio_start, mmio_len; | |
2607 | static int cards_found; | |
2608 | int i, err, pci_using_dac; | |
2609 | u16 link_status, link_speed, link_width; | |
2610 | u32 part_num; | |
2611 | ||
2612 | err = pci_enable_device(pdev); | |
2613 | if (err) | |
2614 | return err; | |
2615 | ||
2616 | if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK) && | |
2617 | !pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK)) { | |
2618 | pci_using_dac = 1; | |
2619 | } else { | |
2620 | err = pci_set_dma_mask(pdev, DMA_32BIT_MASK); | |
2621 | if (err) { | |
2622 | err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK); | |
2623 | if (err) { | |
2624 | dev_err(&pdev->dev, "No usable DMA " | |
2625 | "configuration, aborting\n"); | |
2626 | goto err_dma; | |
2627 | } | |
2628 | } | |
2629 | pci_using_dac = 0; | |
2630 | } | |
2631 | ||
2632 | err = pci_request_regions(pdev, ixgbe_driver_name); | |
2633 | if (err) { | |
2634 | dev_err(&pdev->dev, "pci_request_regions failed 0x%x\n", err); | |
2635 | goto err_pci_reg; | |
2636 | } | |
2637 | ||
2638 | pci_set_master(pdev); | |
2639 | ||
2640 | netdev = alloc_etherdev(sizeof(struct ixgbe_adapter)); | |
2641 | if (!netdev) { | |
2642 | err = -ENOMEM; | |
2643 | goto err_alloc_etherdev; | |
2644 | } | |
2645 | ||
9a799d71 AK |
2646 | SET_NETDEV_DEV(netdev, &pdev->dev); |
2647 | ||
2648 | pci_set_drvdata(pdev, netdev); | |
2649 | adapter = netdev_priv(netdev); | |
2650 | ||
2651 | adapter->netdev = netdev; | |
2652 | adapter->pdev = pdev; | |
2653 | hw = &adapter->hw; | |
2654 | hw->back = adapter; | |
2655 | adapter->msg_enable = (1 << DEFAULT_DEBUG_LEVEL_SHIFT) - 1; | |
2656 | ||
2657 | mmio_start = pci_resource_start(pdev, 0); | |
2658 | mmio_len = pci_resource_len(pdev, 0); | |
2659 | ||
2660 | hw->hw_addr = ioremap(mmio_start, mmio_len); | |
2661 | if (!hw->hw_addr) { | |
2662 | err = -EIO; | |
2663 | goto err_ioremap; | |
2664 | } | |
2665 | ||
2666 | for (i = 1; i <= 5; i++) { | |
2667 | if (pci_resource_len(pdev, i) == 0) | |
2668 | continue; | |
2669 | } | |
2670 | ||
2671 | netdev->open = &ixgbe_open; | |
2672 | netdev->stop = &ixgbe_close; | |
2673 | netdev->hard_start_xmit = &ixgbe_xmit_frame; | |
2674 | netdev->get_stats = &ixgbe_get_stats; | |
2675 | netdev->set_multicast_list = &ixgbe_set_multi; | |
2676 | netdev->set_mac_address = &ixgbe_set_mac; | |
2677 | netdev->change_mtu = &ixgbe_change_mtu; | |
2678 | ixgbe_set_ethtool_ops(netdev); | |
2679 | netdev->tx_timeout = &ixgbe_tx_timeout; | |
2680 | netdev->watchdog_timeo = 5 * HZ; | |
2681 | netif_napi_add(netdev, &adapter->napi, ixgbe_clean, 64); | |
2682 | netdev->vlan_rx_register = ixgbe_vlan_rx_register; | |
2683 | netdev->vlan_rx_add_vid = ixgbe_vlan_rx_add_vid; | |
2684 | netdev->vlan_rx_kill_vid = ixgbe_vlan_rx_kill_vid; | |
2685 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
2686 | netdev->poll_controller = ixgbe_netpoll; | |
2687 | #endif | |
2688 | strcpy(netdev->name, pci_name(pdev)); | |
2689 | ||
2690 | netdev->mem_start = mmio_start; | |
2691 | netdev->mem_end = mmio_start + mmio_len; | |
2692 | ||
2693 | adapter->bd_number = cards_found; | |
2694 | ||
2695 | /* PCI config space info */ | |
2696 | hw->vendor_id = pdev->vendor; | |
2697 | hw->device_id = pdev->device; | |
2698 | hw->revision_id = pdev->revision; | |
2699 | hw->subsystem_vendor_id = pdev->subsystem_vendor; | |
2700 | hw->subsystem_device_id = pdev->subsystem_device; | |
2701 | ||
2702 | /* Setup hw api */ | |
2703 | memcpy(&hw->mac.ops, ii->mac_ops, sizeof(hw->mac.ops)); | |
9a799d71 AK |
2704 | |
2705 | err = ii->get_invariants(hw); | |
2706 | if (err) | |
2707 | goto err_hw_init; | |
2708 | ||
2709 | /* setup the private structure */ | |
2710 | err = ixgbe_sw_init(adapter); | |
2711 | if (err) | |
2712 | goto err_sw_init; | |
2713 | ||
2714 | netdev->features = NETIF_F_SG | | |
2715 | NETIF_F_HW_CSUM | | |
2716 | NETIF_F_HW_VLAN_TX | | |
2717 | NETIF_F_HW_VLAN_RX | | |
2718 | NETIF_F_HW_VLAN_FILTER; | |
2719 | ||
2720 | netdev->features |= NETIF_F_TSO; | |
2721 | ||
2722 | netdev->features |= NETIF_F_TSO6; | |
2723 | if (pci_using_dac) | |
2724 | netdev->features |= NETIF_F_HIGHDMA; | |
2725 | ||
2726 | ||
2727 | /* make sure the EEPROM is good */ | |
2728 | if (ixgbe_validate_eeprom_checksum(hw, NULL) < 0) { | |
2729 | dev_err(&pdev->dev, "The EEPROM Checksum Is Not Valid\n"); | |
2730 | err = -EIO; | |
2731 | goto err_eeprom; | |
2732 | } | |
2733 | ||
2734 | memcpy(netdev->dev_addr, hw->mac.perm_addr, netdev->addr_len); | |
2735 | memcpy(netdev->perm_addr, hw->mac.perm_addr, netdev->addr_len); | |
2736 | ||
2737 | if (ixgbe_validate_mac_addr(netdev->dev_addr)) { | |
2738 | err = -EIO; | |
2739 | goto err_eeprom; | |
2740 | } | |
2741 | ||
2742 | init_timer(&adapter->watchdog_timer); | |
2743 | adapter->watchdog_timer.function = &ixgbe_watchdog; | |
2744 | adapter->watchdog_timer.data = (unsigned long)adapter; | |
2745 | ||
2746 | INIT_WORK(&adapter->reset_task, ixgbe_reset_task); | |
2747 | ||
2748 | /* initialize default flow control settings */ | |
2749 | hw->fc.original_type = ixgbe_fc_full; | |
2750 | hw->fc.type = ixgbe_fc_full; | |
2751 | hw->fc.high_water = IXGBE_DEFAULT_FCRTH; | |
2752 | hw->fc.low_water = IXGBE_DEFAULT_FCRTL; | |
2753 | hw->fc.pause_time = IXGBE_DEFAULT_FCPAUSE; | |
2754 | ||
2755 | /* Interrupt Throttle Rate */ | |
2756 | adapter->rx_eitr = (1000000 / IXGBE_DEFAULT_ITR_RX_USECS); | |
2757 | adapter->tx_eitr = (1000000 / IXGBE_DEFAULT_ITR_TX_USECS); | |
2758 | ||
2759 | /* print bus type/speed/width info */ | |
2760 | pci_read_config_word(pdev, IXGBE_PCI_LINK_STATUS, &link_status); | |
2761 | link_speed = link_status & IXGBE_PCI_LINK_SPEED; | |
2762 | link_width = link_status & IXGBE_PCI_LINK_WIDTH; | |
2763 | dev_info(&pdev->dev, "(PCI Express:%s:%s) " | |
2764 | "%02x:%02x:%02x:%02x:%02x:%02x\n", | |
2765 | ((link_speed == IXGBE_PCI_LINK_SPEED_5000) ? "5.0Gb/s" : | |
2766 | (link_speed == IXGBE_PCI_LINK_SPEED_2500) ? "2.5Gb/s" : | |
2767 | "Unknown"), | |
2768 | ((link_width == IXGBE_PCI_LINK_WIDTH_8) ? "Width x8" : | |
2769 | (link_width == IXGBE_PCI_LINK_WIDTH_4) ? "Width x4" : | |
2770 | (link_width == IXGBE_PCI_LINK_WIDTH_2) ? "Width x2" : | |
2771 | (link_width == IXGBE_PCI_LINK_WIDTH_1) ? "Width x1" : | |
2772 | "Unknown"), | |
2773 | netdev->dev_addr[0], netdev->dev_addr[1], netdev->dev_addr[2], | |
2774 | netdev->dev_addr[3], netdev->dev_addr[4], netdev->dev_addr[5]); | |
2775 | ixgbe_read_part_num(hw, &part_num); | |
2776 | dev_info(&pdev->dev, "MAC: %d, PHY: %d, PBA No: %06x-%03x\n", | |
2777 | hw->mac.type, hw->phy.type, | |
2778 | (part_num >> 8), (part_num & 0xff)); | |
2779 | ||
0c254d86 AK |
2780 | if (link_width <= IXGBE_PCI_LINK_WIDTH_4) { |
2781 | dev_warn(&pdev->dev, "PCI-Express bandwidth available for " | |
2782 | "this card is not sufficient for optimal " | |
2783 | "performance.\n"); | |
2784 | dev_warn(&pdev->dev, "For optimal performance a x8 " | |
2785 | "PCI-Express slot is required.\n"); | |
2786 | } | |
2787 | ||
9a799d71 AK |
2788 | /* reset the hardware with the new settings */ |
2789 | ixgbe_start_hw(hw); | |
2790 | ||
2791 | netif_carrier_off(netdev); | |
2792 | netif_stop_queue(netdev); | |
2793 | ||
2794 | strcpy(netdev->name, "eth%d"); | |
2795 | err = register_netdev(netdev); | |
2796 | if (err) | |
2797 | goto err_register; | |
2798 | ||
2799 | ||
2800 | dev_info(&pdev->dev, "Intel(R) 10 Gigabit Network Connection\n"); | |
2801 | cards_found++; | |
2802 | return 0; | |
2803 | ||
2804 | err_register: | |
5eba3699 | 2805 | ixgbe_release_hw_control(adapter); |
9a799d71 AK |
2806 | err_hw_init: |
2807 | err_sw_init: | |
2808 | err_eeprom: | |
2809 | iounmap(hw->hw_addr); | |
2810 | err_ioremap: | |
2811 | free_netdev(netdev); | |
2812 | err_alloc_etherdev: | |
2813 | pci_release_regions(pdev); | |
2814 | err_pci_reg: | |
2815 | err_dma: | |
2816 | pci_disable_device(pdev); | |
2817 | return err; | |
2818 | } | |
2819 | ||
2820 | /** | |
2821 | * ixgbe_remove - Device Removal Routine | |
2822 | * @pdev: PCI device information struct | |
2823 | * | |
2824 | * ixgbe_remove is called by the PCI subsystem to alert the driver | |
2825 | * that it should release a PCI device. The could be caused by a | |
2826 | * Hot-Plug event, or because the driver is going to be removed from | |
2827 | * memory. | |
2828 | **/ | |
2829 | static void __devexit ixgbe_remove(struct pci_dev *pdev) | |
2830 | { | |
2831 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2832 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
2833 | ||
2834 | set_bit(__IXGBE_DOWN, &adapter->state); | |
2835 | del_timer_sync(&adapter->watchdog_timer); | |
2836 | ||
2837 | flush_scheduled_work(); | |
2838 | ||
2839 | unregister_netdev(netdev); | |
2840 | ||
5eba3699 AV |
2841 | ixgbe_release_hw_control(adapter); |
2842 | ||
9a799d71 AK |
2843 | kfree(adapter->tx_ring); |
2844 | kfree(adapter->rx_ring); | |
2845 | ||
2846 | iounmap(adapter->hw.hw_addr); | |
2847 | pci_release_regions(pdev); | |
2848 | ||
2849 | free_netdev(netdev); | |
2850 | ||
2851 | pci_disable_device(pdev); | |
2852 | } | |
2853 | ||
2854 | /** | |
2855 | * ixgbe_io_error_detected - called when PCI error is detected | |
2856 | * @pdev: Pointer to PCI device | |
2857 | * @state: The current pci connection state | |
2858 | * | |
2859 | * This function is called after a PCI bus error affecting | |
2860 | * this device has been detected. | |
2861 | */ | |
2862 | static pci_ers_result_t ixgbe_io_error_detected(struct pci_dev *pdev, | |
2863 | pci_channel_state_t state) | |
2864 | { | |
2865 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2866 | struct ixgbe_adapter *adapter = netdev->priv; | |
2867 | ||
2868 | netif_device_detach(netdev); | |
2869 | ||
2870 | if (netif_running(netdev)) | |
2871 | ixgbe_down(adapter); | |
2872 | pci_disable_device(pdev); | |
2873 | ||
2874 | /* Request a slot slot reset. */ | |
2875 | return PCI_ERS_RESULT_NEED_RESET; | |
2876 | } | |
2877 | ||
2878 | /** | |
2879 | * ixgbe_io_slot_reset - called after the pci bus has been reset. | |
2880 | * @pdev: Pointer to PCI device | |
2881 | * | |
2882 | * Restart the card from scratch, as if from a cold-boot. | |
2883 | */ | |
2884 | static pci_ers_result_t ixgbe_io_slot_reset(struct pci_dev *pdev) | |
2885 | { | |
2886 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2887 | struct ixgbe_adapter *adapter = netdev->priv; | |
2888 | ||
2889 | if (pci_enable_device(pdev)) { | |
2890 | DPRINTK(PROBE, ERR, | |
2891 | "Cannot re-enable PCI device after reset.\n"); | |
2892 | return PCI_ERS_RESULT_DISCONNECT; | |
2893 | } | |
2894 | pci_set_master(pdev); | |
2895 | ||
2896 | pci_enable_wake(pdev, PCI_D3hot, 0); | |
2897 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
2898 | ||
2899 | ixgbe_reset(adapter); | |
2900 | ||
2901 | return PCI_ERS_RESULT_RECOVERED; | |
2902 | } | |
2903 | ||
2904 | /** | |
2905 | * ixgbe_io_resume - called when traffic can start flowing again. | |
2906 | * @pdev: Pointer to PCI device | |
2907 | * | |
2908 | * This callback is called when the error recovery driver tells us that | |
2909 | * its OK to resume normal operation. | |
2910 | */ | |
2911 | static void ixgbe_io_resume(struct pci_dev *pdev) | |
2912 | { | |
2913 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2914 | struct ixgbe_adapter *adapter = netdev->priv; | |
2915 | ||
2916 | if (netif_running(netdev)) { | |
2917 | if (ixgbe_up(adapter)) { | |
2918 | DPRINTK(PROBE, INFO, "ixgbe_up failed after reset\n"); | |
2919 | return; | |
2920 | } | |
2921 | } | |
2922 | ||
2923 | netif_device_attach(netdev); | |
2924 | ||
2925 | } | |
2926 | ||
2927 | static struct pci_error_handlers ixgbe_err_handler = { | |
2928 | .error_detected = ixgbe_io_error_detected, | |
2929 | .slot_reset = ixgbe_io_slot_reset, | |
2930 | .resume = ixgbe_io_resume, | |
2931 | }; | |
2932 | ||
2933 | static struct pci_driver ixgbe_driver = { | |
2934 | .name = ixgbe_driver_name, | |
2935 | .id_table = ixgbe_pci_tbl, | |
2936 | .probe = ixgbe_probe, | |
2937 | .remove = __devexit_p(ixgbe_remove), | |
2938 | #ifdef CONFIG_PM | |
2939 | .suspend = ixgbe_suspend, | |
2940 | .resume = ixgbe_resume, | |
2941 | #endif | |
2942 | .shutdown = ixgbe_shutdown, | |
2943 | .err_handler = &ixgbe_err_handler | |
2944 | }; | |
2945 | ||
2946 | /** | |
2947 | * ixgbe_init_module - Driver Registration Routine | |
2948 | * | |
2949 | * ixgbe_init_module is the first routine called when the driver is | |
2950 | * loaded. All it does is register with the PCI subsystem. | |
2951 | **/ | |
2952 | static int __init ixgbe_init_module(void) | |
2953 | { | |
2954 | int ret; | |
2955 | printk(KERN_INFO "%s: %s - version %s\n", ixgbe_driver_name, | |
2956 | ixgbe_driver_string, ixgbe_driver_version); | |
2957 | ||
2958 | printk(KERN_INFO "%s: %s\n", ixgbe_driver_name, ixgbe_copyright); | |
2959 | ||
2960 | ret = pci_register_driver(&ixgbe_driver); | |
2961 | return ret; | |
2962 | } | |
2963 | module_init(ixgbe_init_module); | |
2964 | ||
2965 | /** | |
2966 | * ixgbe_exit_module - Driver Exit Cleanup Routine | |
2967 | * | |
2968 | * ixgbe_exit_module is called just before the driver is removed | |
2969 | * from memory. | |
2970 | **/ | |
2971 | static void __exit ixgbe_exit_module(void) | |
2972 | { | |
2973 | pci_unregister_driver(&ixgbe_driver); | |
2974 | } | |
2975 | module_exit(ixgbe_exit_module); | |
2976 | ||
2977 | /* ixgbe_main.c */ |