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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[] = { | |
57 | [board_82598AF] = &ixgbe_82598AF_info, | |
58 | [board_82598EB] = &ixgbe_82598EB_info, | |
59 | [board_82598AT] = &ixgbe_82598AT_info, | |
60 | }; | |
61 | ||
62 | /* ixgbe_pci_tbl - PCI Device ID Table | |
63 | * | |
64 | * Wildcard entries (PCI_ANY_ID) should come last | |
65 | * Last entry must be all 0s | |
66 | * | |
67 | * { Vendor ID, Device ID, SubVendor ID, SubDevice ID, | |
68 | * Class, Class Mask, private data (not used) } | |
69 | */ | |
70 | static struct pci_device_id ixgbe_pci_tbl[] = { | |
71 | {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AF_DUAL_PORT), | |
72 | board_82598AF }, | |
73 | {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AF_SINGLE_PORT), | |
74 | board_82598AF }, | |
75 | {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AT_DUAL_PORT), | |
76 | board_82598AT }, | |
77 | {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_CX4), | |
78 | board_82598EB }, | |
79 | ||
80 | /* required last entry */ | |
81 | {0, } | |
82 | }; | |
83 | MODULE_DEVICE_TABLE(pci, ixgbe_pci_tbl); | |
84 | ||
85 | MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>"); | |
86 | MODULE_DESCRIPTION("Intel(R) 10 Gigabit PCI Express Network Driver"); | |
87 | MODULE_LICENSE("GPL"); | |
88 | MODULE_VERSION(DRV_VERSION); | |
89 | ||
90 | #define DEFAULT_DEBUG_LEVEL_SHIFT 3 | |
91 | ||
92 | ||
93 | #ifdef DEBUG | |
94 | /** | |
95 | * ixgbe_get_hw_dev_name - return device name string | |
96 | * used by hardware layer to print debugging information | |
97 | **/ | |
98 | char *ixgbe_get_hw_dev_name(struct ixgbe_hw *hw) | |
99 | { | |
100 | struct ixgbe_adapter *adapter = hw->back; | |
101 | struct net_device *netdev = adapter->netdev; | |
102 | return netdev->name; | |
103 | } | |
104 | #endif | |
105 | ||
106 | static void ixgbe_set_ivar(struct ixgbe_adapter *adapter, u16 int_alloc_entry, | |
107 | u8 msix_vector) | |
108 | { | |
109 | u32 ivar, index; | |
110 | ||
111 | msix_vector |= IXGBE_IVAR_ALLOC_VAL; | |
112 | index = (int_alloc_entry >> 2) & 0x1F; | |
113 | ivar = IXGBE_READ_REG(&adapter->hw, IXGBE_IVAR(index)); | |
114 | ivar &= ~(0xFF << (8 * (int_alloc_entry & 0x3))); | |
115 | ivar |= (msix_vector << (8 * (int_alloc_entry & 0x3))); | |
116 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_IVAR(index), ivar); | |
117 | } | |
118 | ||
119 | static void ixgbe_unmap_and_free_tx_resource(struct ixgbe_adapter *adapter, | |
120 | struct ixgbe_tx_buffer | |
121 | *tx_buffer_info) | |
122 | { | |
123 | if (tx_buffer_info->dma) { | |
124 | pci_unmap_page(adapter->pdev, | |
125 | tx_buffer_info->dma, | |
126 | tx_buffer_info->length, PCI_DMA_TODEVICE); | |
127 | tx_buffer_info->dma = 0; | |
128 | } | |
129 | if (tx_buffer_info->skb) { | |
130 | dev_kfree_skb_any(tx_buffer_info->skb); | |
131 | tx_buffer_info->skb = NULL; | |
132 | } | |
133 | /* tx_buffer_info must be completely set up in the transmit path */ | |
134 | } | |
135 | ||
136 | static inline bool ixgbe_check_tx_hang(struct ixgbe_adapter *adapter, | |
137 | struct ixgbe_ring *tx_ring, | |
138 | unsigned int eop, | |
139 | union ixgbe_adv_tx_desc *eop_desc) | |
140 | { | |
141 | /* Detect a transmit hang in hardware, this serializes the | |
142 | * check with the clearing of time_stamp and movement of i */ | |
143 | adapter->detect_tx_hung = false; | |
144 | if (tx_ring->tx_buffer_info[eop].dma && | |
145 | time_after(jiffies, tx_ring->tx_buffer_info[eop].time_stamp + HZ) && | |
146 | !(IXGBE_READ_REG(&adapter->hw, IXGBE_TFCS) & IXGBE_TFCS_TXOFF)) { | |
147 | /* detected Tx unit hang */ | |
148 | DPRINTK(DRV, ERR, "Detected Tx Unit Hang\n" | |
149 | " TDH <%x>\n" | |
150 | " TDT <%x>\n" | |
151 | " next_to_use <%x>\n" | |
152 | " next_to_clean <%x>\n" | |
153 | "tx_buffer_info[next_to_clean]\n" | |
154 | " time_stamp <%lx>\n" | |
155 | " next_to_watch <%x>\n" | |
156 | " jiffies <%lx>\n" | |
157 | " next_to_watch.status <%x>\n", | |
158 | readl(adapter->hw.hw_addr + tx_ring->head), | |
159 | readl(adapter->hw.hw_addr + tx_ring->tail), | |
160 | tx_ring->next_to_use, | |
161 | tx_ring->next_to_clean, | |
162 | tx_ring->tx_buffer_info[eop].time_stamp, | |
163 | eop, jiffies, eop_desc->wb.status); | |
164 | return true; | |
165 | } | |
166 | ||
167 | return false; | |
168 | } | |
169 | ||
170 | /** | |
171 | * ixgbe_clean_tx_irq - Reclaim resources after transmit completes | |
172 | * @adapter: board private structure | |
173 | **/ | |
174 | static bool ixgbe_clean_tx_irq(struct ixgbe_adapter *adapter, | |
175 | struct ixgbe_ring *tx_ring) | |
176 | { | |
177 | struct net_device *netdev = adapter->netdev; | |
178 | union ixgbe_adv_tx_desc *tx_desc, *eop_desc; | |
179 | struct ixgbe_tx_buffer *tx_buffer_info; | |
180 | unsigned int i, eop; | |
181 | bool cleaned = false; | |
182 | int count = 0; | |
183 | ||
184 | i = tx_ring->next_to_clean; | |
185 | eop = tx_ring->tx_buffer_info[i].next_to_watch; | |
186 | eop_desc = IXGBE_TX_DESC_ADV(*tx_ring, eop); | |
187 | while (eop_desc->wb.status & cpu_to_le32(IXGBE_TXD_STAT_DD)) { | |
188 | for (cleaned = false; !cleaned;) { | |
189 | tx_desc = IXGBE_TX_DESC_ADV(*tx_ring, i); | |
190 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; | |
191 | cleaned = (i == eop); | |
192 | ||
193 | tx_ring->stats.bytes += tx_buffer_info->length; | |
194 | ixgbe_unmap_and_free_tx_resource(adapter, | |
195 | tx_buffer_info); | |
196 | tx_desc->wb.status = 0; | |
197 | ||
198 | i++; | |
199 | if (i == tx_ring->count) | |
200 | i = 0; | |
201 | } | |
202 | ||
203 | tx_ring->stats.packets++; | |
204 | ||
205 | eop = tx_ring->tx_buffer_info[i].next_to_watch; | |
206 | eop_desc = IXGBE_TX_DESC_ADV(*tx_ring, eop); | |
207 | ||
208 | /* weight of a sort for tx, avoid endless transmit cleanup */ | |
209 | if (count++ >= tx_ring->work_limit) | |
210 | break; | |
211 | } | |
212 | ||
213 | tx_ring->next_to_clean = i; | |
214 | ||
215 | #define TX_WAKE_THRESHOLD 32 | |
216 | spin_lock(&tx_ring->tx_lock); | |
217 | ||
218 | if (cleaned && netif_carrier_ok(netdev) && | |
219 | (IXGBE_DESC_UNUSED(tx_ring) >= TX_WAKE_THRESHOLD) && | |
220 | !test_bit(__IXGBE_DOWN, &adapter->state)) | |
221 | netif_wake_queue(netdev); | |
222 | ||
223 | spin_unlock(&tx_ring->tx_lock); | |
224 | ||
225 | if (adapter->detect_tx_hung) | |
226 | if (ixgbe_check_tx_hang(adapter, tx_ring, eop, eop_desc)) | |
227 | netif_stop_queue(netdev); | |
228 | ||
229 | if (count >= tx_ring->work_limit) | |
230 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS, tx_ring->eims_value); | |
231 | ||
232 | return cleaned; | |
233 | } | |
234 | ||
235 | /** | |
236 | * ixgbe_receive_skb - Send a completed packet up the stack | |
237 | * @adapter: board private structure | |
238 | * @skb: packet to send up | |
239 | * @is_vlan: packet has a VLAN tag | |
240 | * @tag: VLAN tag from descriptor | |
241 | **/ | |
242 | static void ixgbe_receive_skb(struct ixgbe_adapter *adapter, | |
243 | struct sk_buff *skb, bool is_vlan, | |
244 | u16 tag) | |
245 | { | |
246 | if (!(adapter->flags & IXGBE_FLAG_IN_NETPOLL)) { | |
247 | if (adapter->vlgrp && is_vlan) | |
248 | vlan_hwaccel_receive_skb(skb, adapter->vlgrp, tag); | |
249 | else | |
250 | netif_receive_skb(skb); | |
251 | } else { | |
252 | ||
253 | if (adapter->vlgrp && is_vlan) | |
254 | vlan_hwaccel_rx(skb, adapter->vlgrp, tag); | |
255 | else | |
256 | netif_rx(skb); | |
257 | } | |
258 | } | |
259 | ||
260 | static inline void ixgbe_rx_checksum(struct ixgbe_adapter *adapter, | |
261 | u32 status_err, | |
262 | struct sk_buff *skb) | |
263 | { | |
264 | skb->ip_summed = CHECKSUM_NONE; | |
265 | ||
266 | /* Ignore Checksum bit is set */ | |
267 | if ((status_err & IXGBE_RXD_STAT_IXSM) || | |
268 | !(adapter->flags & IXGBE_FLAG_RX_CSUM_ENABLED)) | |
269 | return; | |
270 | /* TCP/UDP checksum error bit is set */ | |
271 | if (status_err & (IXGBE_RXDADV_ERR_TCPE | IXGBE_RXDADV_ERR_IPE)) { | |
272 | /* let the stack verify checksum errors */ | |
273 | adapter->hw_csum_rx_error++; | |
274 | return; | |
275 | } | |
276 | /* It must be a TCP or UDP packet with a valid checksum */ | |
277 | if (status_err & (IXGBE_RXD_STAT_L4CS | IXGBE_RXD_STAT_UDPCS)) | |
278 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
279 | adapter->hw_csum_rx_good++; | |
280 | } | |
281 | ||
282 | /** | |
283 | * ixgbe_alloc_rx_buffers - Replace used receive buffers; packet split | |
284 | * @adapter: address of board private structure | |
285 | **/ | |
286 | static void ixgbe_alloc_rx_buffers(struct ixgbe_adapter *adapter, | |
287 | struct ixgbe_ring *rx_ring, | |
288 | int cleaned_count) | |
289 | { | |
290 | struct net_device *netdev = adapter->netdev; | |
291 | struct pci_dev *pdev = adapter->pdev; | |
292 | union ixgbe_adv_rx_desc *rx_desc; | |
293 | struct ixgbe_rx_buffer *rx_buffer_info; | |
294 | struct sk_buff *skb; | |
295 | unsigned int i; | |
296 | unsigned int bufsz = adapter->rx_buf_len + NET_IP_ALIGN; | |
297 | ||
298 | i = rx_ring->next_to_use; | |
299 | rx_buffer_info = &rx_ring->rx_buffer_info[i]; | |
300 | ||
301 | while (cleaned_count--) { | |
302 | rx_desc = IXGBE_RX_DESC_ADV(*rx_ring, i); | |
303 | ||
304 | if (!rx_buffer_info->page && | |
305 | (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED)) { | |
306 | rx_buffer_info->page = alloc_page(GFP_ATOMIC); | |
307 | if (!rx_buffer_info->page) { | |
308 | adapter->alloc_rx_page_failed++; | |
309 | goto no_buffers; | |
310 | } | |
311 | rx_buffer_info->page_dma = | |
312 | pci_map_page(pdev, rx_buffer_info->page, | |
313 | 0, PAGE_SIZE, PCI_DMA_FROMDEVICE); | |
314 | } | |
315 | ||
316 | if (!rx_buffer_info->skb) { | |
317 | skb = netdev_alloc_skb(netdev, bufsz); | |
318 | ||
319 | if (!skb) { | |
320 | adapter->alloc_rx_buff_failed++; | |
321 | goto no_buffers; | |
322 | } | |
323 | ||
324 | /* | |
325 | * Make buffer alignment 2 beyond a 16 byte boundary | |
326 | * this will result in a 16 byte aligned IP header after | |
327 | * the 14 byte MAC header is removed | |
328 | */ | |
329 | skb_reserve(skb, NET_IP_ALIGN); | |
330 | ||
331 | rx_buffer_info->skb = skb; | |
332 | rx_buffer_info->dma = pci_map_single(pdev, skb->data, | |
333 | bufsz, | |
334 | PCI_DMA_FROMDEVICE); | |
335 | } | |
336 | /* Refresh the desc even if buffer_addrs didn't change because | |
337 | * each write-back erases this info. */ | |
338 | if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) { | |
339 | rx_desc->read.pkt_addr = | |
340 | cpu_to_le64(rx_buffer_info->page_dma); | |
341 | rx_desc->read.hdr_addr = | |
342 | cpu_to_le64(rx_buffer_info->dma); | |
343 | } else { | |
344 | rx_desc->read.pkt_addr = | |
345 | cpu_to_le64(rx_buffer_info->dma); | |
346 | } | |
347 | ||
348 | i++; | |
349 | if (i == rx_ring->count) | |
350 | i = 0; | |
351 | rx_buffer_info = &rx_ring->rx_buffer_info[i]; | |
352 | } | |
353 | no_buffers: | |
354 | if (rx_ring->next_to_use != i) { | |
355 | rx_ring->next_to_use = i; | |
356 | if (i-- == 0) | |
357 | i = (rx_ring->count - 1); | |
358 | ||
359 | /* | |
360 | * Force memory writes to complete before letting h/w | |
361 | * know there are new descriptors to fetch. (Only | |
362 | * applicable for weak-ordered memory model archs, | |
363 | * such as IA-64). | |
364 | */ | |
365 | wmb(); | |
366 | writel(i, adapter->hw.hw_addr + rx_ring->tail); | |
367 | } | |
368 | } | |
369 | ||
370 | static bool ixgbe_clean_rx_irq(struct ixgbe_adapter *adapter, | |
371 | struct ixgbe_ring *rx_ring, | |
372 | int *work_done, int work_to_do) | |
373 | { | |
374 | struct net_device *netdev = adapter->netdev; | |
375 | struct pci_dev *pdev = adapter->pdev; | |
376 | union ixgbe_adv_rx_desc *rx_desc, *next_rxd; | |
377 | struct ixgbe_rx_buffer *rx_buffer_info, *next_buffer; | |
378 | struct sk_buff *skb; | |
379 | unsigned int i; | |
380 | u32 upper_len, len, staterr; | |
381 | u16 hdr_info, vlan_tag; | |
382 | bool is_vlan, cleaned = false; | |
383 | int cleaned_count = 0; | |
384 | ||
385 | i = rx_ring->next_to_clean; | |
386 | upper_len = 0; | |
387 | rx_desc = IXGBE_RX_DESC_ADV(*rx_ring, i); | |
388 | staterr = le32_to_cpu(rx_desc->wb.upper.status_error); | |
389 | rx_buffer_info = &rx_ring->rx_buffer_info[i]; | |
390 | is_vlan = (staterr & IXGBE_RXD_STAT_VP); | |
391 | vlan_tag = le16_to_cpu(rx_desc->wb.upper.vlan); | |
392 | ||
393 | while (staterr & IXGBE_RXD_STAT_DD) { | |
394 | if (*work_done >= work_to_do) | |
395 | break; | |
396 | (*work_done)++; | |
397 | ||
398 | if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) { | |
399 | hdr_info = | |
400 | le16_to_cpu(rx_desc->wb.lower.lo_dword.hdr_info); | |
401 | len = | |
402 | ((hdr_info & IXGBE_RXDADV_HDRBUFLEN_MASK) >> | |
403 | IXGBE_RXDADV_HDRBUFLEN_SHIFT); | |
404 | if (hdr_info & IXGBE_RXDADV_SPH) | |
405 | adapter->rx_hdr_split++; | |
406 | if (len > IXGBE_RX_HDR_SIZE) | |
407 | len = IXGBE_RX_HDR_SIZE; | |
408 | upper_len = le16_to_cpu(rx_desc->wb.upper.length); | |
409 | } else | |
410 | len = le16_to_cpu(rx_desc->wb.upper.length); | |
411 | ||
412 | cleaned = true; | |
413 | skb = rx_buffer_info->skb; | |
414 | prefetch(skb->data - NET_IP_ALIGN); | |
415 | rx_buffer_info->skb = NULL; | |
416 | ||
417 | if (len && !skb_shinfo(skb)->nr_frags) { | |
418 | pci_unmap_single(pdev, rx_buffer_info->dma, | |
419 | adapter->rx_buf_len + NET_IP_ALIGN, | |
420 | PCI_DMA_FROMDEVICE); | |
421 | skb_put(skb, len); | |
422 | } | |
423 | ||
424 | if (upper_len) { | |
425 | pci_unmap_page(pdev, rx_buffer_info->page_dma, | |
426 | PAGE_SIZE, PCI_DMA_FROMDEVICE); | |
427 | rx_buffer_info->page_dma = 0; | |
428 | skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags, | |
429 | rx_buffer_info->page, 0, upper_len); | |
430 | rx_buffer_info->page = NULL; | |
431 | ||
432 | skb->len += upper_len; | |
433 | skb->data_len += upper_len; | |
434 | skb->truesize += upper_len; | |
435 | } | |
436 | ||
437 | i++; | |
438 | if (i == rx_ring->count) | |
439 | i = 0; | |
440 | next_buffer = &rx_ring->rx_buffer_info[i]; | |
441 | ||
442 | next_rxd = IXGBE_RX_DESC_ADV(*rx_ring, i); | |
443 | prefetch(next_rxd); | |
444 | ||
445 | cleaned_count++; | |
446 | if (staterr & IXGBE_RXD_STAT_EOP) { | |
447 | rx_ring->stats.packets++; | |
448 | rx_ring->stats.bytes += skb->len; | |
449 | } else { | |
450 | rx_buffer_info->skb = next_buffer->skb; | |
451 | rx_buffer_info->dma = next_buffer->dma; | |
452 | next_buffer->skb = skb; | |
453 | adapter->non_eop_descs++; | |
454 | goto next_desc; | |
455 | } | |
456 | ||
457 | if (staterr & IXGBE_RXDADV_ERR_FRAME_ERR_MASK) { | |
458 | dev_kfree_skb_irq(skb); | |
459 | goto next_desc; | |
460 | } | |
461 | ||
462 | ixgbe_rx_checksum(adapter, staterr, skb); | |
463 | skb->protocol = eth_type_trans(skb, netdev); | |
464 | ixgbe_receive_skb(adapter, skb, is_vlan, vlan_tag); | |
465 | netdev->last_rx = jiffies; | |
466 | ||
467 | next_desc: | |
468 | rx_desc->wb.upper.status_error = 0; | |
469 | ||
470 | /* return some buffers to hardware, one at a time is too slow */ | |
471 | if (cleaned_count >= IXGBE_RX_BUFFER_WRITE) { | |
472 | ixgbe_alloc_rx_buffers(adapter, rx_ring, cleaned_count); | |
473 | cleaned_count = 0; | |
474 | } | |
475 | ||
476 | /* use prefetched values */ | |
477 | rx_desc = next_rxd; | |
478 | rx_buffer_info = next_buffer; | |
479 | ||
480 | staterr = le32_to_cpu(rx_desc->wb.upper.status_error); | |
481 | is_vlan = (staterr & IXGBE_RXD_STAT_VP); | |
482 | vlan_tag = le16_to_cpu(rx_desc->wb.upper.vlan); | |
483 | } | |
484 | ||
485 | rx_ring->next_to_clean = i; | |
486 | cleaned_count = IXGBE_DESC_UNUSED(rx_ring); | |
487 | ||
488 | if (cleaned_count) | |
489 | ixgbe_alloc_rx_buffers(adapter, rx_ring, cleaned_count); | |
490 | ||
491 | return cleaned; | |
492 | } | |
493 | ||
494 | #define IXGBE_MAX_INTR 10 | |
495 | /** | |
496 | * ixgbe_configure_msix - Configure MSI-X hardware | |
497 | * @adapter: board private structure | |
498 | * | |
499 | * ixgbe_configure_msix sets up the hardware to properly generate MSI-X | |
500 | * interrupts. | |
501 | **/ | |
502 | static void ixgbe_configure_msix(struct ixgbe_adapter *adapter) | |
503 | { | |
504 | int i, vector = 0; | |
505 | ||
506 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
507 | ixgbe_set_ivar(adapter, IXGBE_IVAR_TX_QUEUE(i), | |
508 | IXGBE_MSIX_VECTOR(vector)); | |
509 | writel(EITR_INTS_PER_SEC_TO_REG(adapter->tx_eitr), | |
510 | adapter->hw.hw_addr + adapter->tx_ring[i].itr_register); | |
511 | vector++; | |
512 | } | |
513 | ||
514 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
515 | ixgbe_set_ivar(adapter, IXGBE_IVAR_RX_QUEUE(i), | |
516 | IXGBE_MSIX_VECTOR(vector)); | |
517 | writel(EITR_INTS_PER_SEC_TO_REG(adapter->rx_eitr), | |
518 | adapter->hw.hw_addr + adapter->rx_ring[i].itr_register); | |
519 | vector++; | |
520 | } | |
521 | ||
522 | vector = adapter->num_tx_queues + adapter->num_rx_queues; | |
523 | ixgbe_set_ivar(adapter, IXGBE_IVAR_OTHER_CAUSES_INDEX, | |
524 | IXGBE_MSIX_VECTOR(vector)); | |
525 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITR(vector), 1950); | |
526 | } | |
527 | ||
528 | static irqreturn_t ixgbe_msix_lsc(int irq, void *data) | |
529 | { | |
530 | struct net_device *netdev = data; | |
531 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
532 | struct ixgbe_hw *hw = &adapter->hw; | |
533 | u32 eicr = IXGBE_READ_REG(hw, IXGBE_EICR); | |
534 | ||
535 | if (eicr & IXGBE_EICR_LSC) { | |
536 | adapter->lsc_int++; | |
537 | if (!test_bit(__IXGBE_DOWN, &adapter->state)) | |
538 | mod_timer(&adapter->watchdog_timer, jiffies); | |
539 | } | |
540 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS, IXGBE_EIMS_OTHER); | |
541 | ||
542 | return IRQ_HANDLED; | |
543 | } | |
544 | ||
545 | static irqreturn_t ixgbe_msix_clean_tx(int irq, void *data) | |
546 | { | |
547 | struct ixgbe_ring *txr = data; | |
548 | struct ixgbe_adapter *adapter = txr->adapter; | |
549 | ||
550 | ixgbe_clean_tx_irq(adapter, txr); | |
551 | ||
552 | return IRQ_HANDLED; | |
553 | } | |
554 | ||
555 | static irqreturn_t ixgbe_msix_clean_rx(int irq, void *data) | |
556 | { | |
557 | struct ixgbe_ring *rxr = data; | |
558 | struct ixgbe_adapter *adapter = rxr->adapter; | |
559 | ||
560 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, rxr->eims_value); | |
561 | netif_rx_schedule(adapter->netdev, &adapter->napi); | |
562 | return IRQ_HANDLED; | |
563 | } | |
564 | ||
565 | static int ixgbe_clean_rxonly(struct napi_struct *napi, int budget) | |
566 | { | |
567 | struct ixgbe_adapter *adapter = container_of(napi, | |
568 | struct ixgbe_adapter, napi); | |
569 | struct net_device *netdev = adapter->netdev; | |
570 | int work_done = 0; | |
571 | struct ixgbe_ring *rxr = adapter->rx_ring; | |
572 | ||
573 | /* Keep link state information with original netdev */ | |
574 | if (!netif_carrier_ok(netdev)) | |
575 | goto quit_polling; | |
576 | ||
577 | ixgbe_clean_rx_irq(adapter, rxr, &work_done, budget); | |
578 | ||
579 | /* If no Tx and not enough Rx work done, exit the polling mode */ | |
580 | if ((work_done < budget) || !netif_running(netdev)) { | |
581 | quit_polling: | |
582 | netif_rx_complete(netdev, napi); | |
583 | if (!test_bit(__IXGBE_DOWN, &adapter->state)) | |
584 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS, | |
585 | rxr->eims_value); | |
586 | } | |
587 | ||
588 | return work_done; | |
589 | } | |
590 | ||
591 | /** | |
592 | * ixgbe_setup_msix - Initialize MSI-X interrupts | |
593 | * | |
594 | * ixgbe_setup_msix allocates MSI-X vectors and requests | |
595 | * interrutps from the kernel. | |
596 | **/ | |
597 | static int ixgbe_setup_msix(struct ixgbe_adapter *adapter) | |
598 | { | |
599 | struct net_device *netdev = adapter->netdev; | |
600 | int i, int_vector = 0, err = 0; | |
601 | int max_msix_count; | |
602 | ||
603 | /* +1 for the LSC interrupt */ | |
604 | max_msix_count = adapter->num_rx_queues + adapter->num_tx_queues + 1; | |
605 | adapter->msix_entries = kcalloc(max_msix_count, | |
606 | sizeof(struct msix_entry), GFP_KERNEL); | |
607 | if (!adapter->msix_entries) | |
608 | return -ENOMEM; | |
609 | ||
610 | for (i = 0; i < max_msix_count; i++) | |
611 | adapter->msix_entries[i].entry = i; | |
612 | ||
613 | err = pci_enable_msix(adapter->pdev, adapter->msix_entries, | |
614 | max_msix_count); | |
615 | if (err) | |
616 | goto out; | |
617 | ||
618 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
619 | sprintf(adapter->tx_ring[i].name, "%s-tx%d", netdev->name, i); | |
620 | err = request_irq(adapter->msix_entries[int_vector].vector, | |
621 | &ixgbe_msix_clean_tx, | |
622 | 0, | |
623 | adapter->tx_ring[i].name, | |
624 | &(adapter->tx_ring[i])); | |
625 | if (err) { | |
626 | DPRINTK(PROBE, ERR, | |
627 | "request_irq failed for MSIX interrupt " | |
628 | "Error: %d\n", err); | |
629 | goto release_irqs; | |
630 | } | |
631 | adapter->tx_ring[i].eims_value = | |
632 | (1 << IXGBE_MSIX_VECTOR(int_vector)); | |
633 | adapter->tx_ring[i].itr_register = IXGBE_EITR(int_vector); | |
634 | int_vector++; | |
635 | } | |
636 | ||
637 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
638 | if (strlen(netdev->name) < (IFNAMSIZ - 5)) | |
639 | sprintf(adapter->rx_ring[i].name, | |
640 | "%s-rx%d", netdev->name, i); | |
641 | else | |
642 | memcpy(adapter->rx_ring[i].name, | |
643 | netdev->name, IFNAMSIZ); | |
644 | err = request_irq(adapter->msix_entries[int_vector].vector, | |
645 | &ixgbe_msix_clean_rx, 0, | |
646 | adapter->rx_ring[i].name, | |
647 | &(adapter->rx_ring[i])); | |
648 | if (err) { | |
649 | DPRINTK(PROBE, ERR, | |
650 | "request_irq failed for MSIX interrupt " | |
651 | "Error: %d\n", err); | |
652 | goto release_irqs; | |
653 | } | |
654 | ||
655 | adapter->rx_ring[i].eims_value = | |
656 | (1 << IXGBE_MSIX_VECTOR(int_vector)); | |
657 | adapter->rx_ring[i].itr_register = IXGBE_EITR(int_vector); | |
658 | int_vector++; | |
659 | } | |
660 | ||
661 | sprintf(adapter->lsc_name, "%s-lsc", netdev->name); | |
662 | err = request_irq(adapter->msix_entries[int_vector].vector, | |
663 | &ixgbe_msix_lsc, 0, adapter->lsc_name, netdev); | |
664 | if (err) { | |
665 | DPRINTK(PROBE, ERR, | |
666 | "request_irq for msix_lsc failed: %d\n", err); | |
667 | goto release_irqs; | |
668 | } | |
669 | ||
670 | /* FIXME: implement netif_napi_remove() instead */ | |
671 | adapter->napi.poll = ixgbe_clean_rxonly; | |
672 | adapter->flags |= IXGBE_FLAG_MSIX_ENABLED; | |
673 | return 0; | |
674 | ||
675 | release_irqs: | |
676 | int_vector--; | |
677 | for (; int_vector >= adapter->num_tx_queues; int_vector--) | |
678 | free_irq(adapter->msix_entries[int_vector].vector, | |
679 | &(adapter->rx_ring[int_vector - | |
680 | adapter->num_tx_queues])); | |
681 | ||
682 | for (; int_vector >= 0; int_vector--) | |
683 | free_irq(adapter->msix_entries[int_vector].vector, | |
684 | &(adapter->tx_ring[int_vector])); | |
685 | out: | |
686 | kfree(adapter->msix_entries); | |
687 | adapter->msix_entries = NULL; | |
688 | adapter->flags &= ~IXGBE_FLAG_MSIX_ENABLED; | |
689 | return err; | |
690 | } | |
691 | ||
692 | /** | |
693 | * ixgbe_intr - Interrupt Handler | |
694 | * @irq: interrupt number | |
695 | * @data: pointer to a network interface device structure | |
696 | * @pt_regs: CPU registers structure | |
697 | **/ | |
698 | static irqreturn_t ixgbe_intr(int irq, void *data) | |
699 | { | |
700 | struct net_device *netdev = data; | |
701 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
702 | struct ixgbe_hw *hw = &adapter->hw; | |
703 | u32 eicr; | |
704 | ||
705 | eicr = IXGBE_READ_REG(hw, IXGBE_EICR); | |
706 | ||
707 | if (!eicr) | |
708 | return IRQ_NONE; /* Not our interrupt */ | |
709 | ||
710 | if (eicr & IXGBE_EICR_LSC) { | |
711 | adapter->lsc_int++; | |
712 | if (!test_bit(__IXGBE_DOWN, &adapter->state)) | |
713 | mod_timer(&adapter->watchdog_timer, jiffies); | |
714 | } | |
715 | if (netif_rx_schedule_prep(netdev, &adapter->napi)) { | |
716 | /* Disable interrupts and register for poll. The flush of the | |
717 | * posted write is intentionally left out. */ | |
718 | atomic_inc(&adapter->irq_sem); | |
719 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, ~0); | |
720 | __netif_rx_schedule(netdev, &adapter->napi); | |
721 | } | |
722 | ||
723 | return IRQ_HANDLED; | |
724 | } | |
725 | ||
726 | /** | |
727 | * ixgbe_request_irq - initialize interrupts | |
728 | * @adapter: board private structure | |
729 | * | |
730 | * Attempts to configure interrupts using the best available | |
731 | * capabilities of the hardware and kernel. | |
732 | **/ | |
733 | static int ixgbe_request_irq(struct ixgbe_adapter *adapter, u32 *num_rx_queues) | |
734 | { | |
735 | struct net_device *netdev = adapter->netdev; | |
736 | int flags, err; | |
737 | irqreturn_t(*handler) (int, void *) = &ixgbe_intr; | |
738 | ||
739 | flags = IRQF_SHARED; | |
740 | ||
741 | err = ixgbe_setup_msix(adapter); | |
742 | if (!err) | |
743 | goto request_done; | |
744 | ||
745 | /* | |
746 | * if we can't do MSI-X, fall through and try MSI | |
747 | * No need to reallocate memory since we're decreasing the number of | |
748 | * queues. We just won't use the other ones, also it is freed correctly | |
749 | * on ixgbe_remove. | |
750 | */ | |
751 | *num_rx_queues = 1; | |
752 | ||
753 | /* do MSI */ | |
754 | err = pci_enable_msi(adapter->pdev); | |
755 | if (!err) { | |
756 | adapter->flags |= IXGBE_FLAG_MSI_ENABLED; | |
757 | flags &= ~IRQF_SHARED; | |
758 | handler = &ixgbe_intr; | |
759 | } | |
760 | ||
761 | err = request_irq(adapter->pdev->irq, handler, flags, | |
762 | netdev->name, netdev); | |
763 | if (err) | |
764 | DPRINTK(PROBE, ERR, "request_irq failed, Error %d\n", err); | |
765 | ||
766 | request_done: | |
767 | return err; | |
768 | } | |
769 | ||
770 | static void ixgbe_free_irq(struct ixgbe_adapter *adapter) | |
771 | { | |
772 | struct net_device *netdev = adapter->netdev; | |
773 | ||
774 | if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) { | |
775 | int i; | |
776 | ||
777 | for (i = 0; i < adapter->num_tx_queues; i++) | |
778 | free_irq(adapter->msix_entries[i].vector, | |
779 | &(adapter->tx_ring[i])); | |
780 | for (i = 0; i < adapter->num_rx_queues; i++) | |
781 | free_irq(adapter->msix_entries[i + | |
782 | adapter->num_tx_queues].vector, | |
783 | &(adapter->rx_ring[i])); | |
784 | i = adapter->num_rx_queues + adapter->num_tx_queues; | |
785 | free_irq(adapter->msix_entries[i].vector, netdev); | |
786 | pci_disable_msix(adapter->pdev); | |
787 | kfree(adapter->msix_entries); | |
788 | adapter->msix_entries = NULL; | |
789 | adapter->flags &= ~IXGBE_FLAG_MSIX_ENABLED; | |
790 | return; | |
791 | } | |
792 | ||
793 | free_irq(adapter->pdev->irq, netdev); | |
794 | if (adapter->flags & IXGBE_FLAG_MSI_ENABLED) { | |
795 | pci_disable_msi(adapter->pdev); | |
796 | adapter->flags &= ~IXGBE_FLAG_MSI_ENABLED; | |
797 | } | |
798 | } | |
799 | ||
800 | /** | |
801 | * ixgbe_irq_disable - Mask off interrupt generation on the NIC | |
802 | * @adapter: board private structure | |
803 | **/ | |
804 | static inline void ixgbe_irq_disable(struct ixgbe_adapter *adapter) | |
805 | { | |
806 | atomic_inc(&adapter->irq_sem); | |
807 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, ~0); | |
808 | IXGBE_WRITE_FLUSH(&adapter->hw); | |
809 | synchronize_irq(adapter->pdev->irq); | |
810 | } | |
811 | ||
812 | /** | |
813 | * ixgbe_irq_enable - Enable default interrupt generation settings | |
814 | * @adapter: board private structure | |
815 | **/ | |
816 | static inline void ixgbe_irq_enable(struct ixgbe_adapter *adapter) | |
817 | { | |
818 | if (atomic_dec_and_test(&adapter->irq_sem)) { | |
819 | if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) | |
820 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIAC, | |
821 | (IXGBE_EIMS_ENABLE_MASK & | |
822 | ~(IXGBE_EIMS_OTHER | IXGBE_EIMS_LSC))); | |
823 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS, | |
824 | IXGBE_EIMS_ENABLE_MASK); | |
825 | IXGBE_WRITE_FLUSH(&adapter->hw); | |
826 | } | |
827 | } | |
828 | ||
829 | /** | |
830 | * ixgbe_configure_msi_and_legacy - Initialize PIN (INTA...) and MSI interrupts | |
831 | * | |
832 | **/ | |
833 | static void ixgbe_configure_msi_and_legacy(struct ixgbe_adapter *adapter) | |
834 | { | |
835 | int i; | |
836 | struct ixgbe_hw *hw = &adapter->hw; | |
837 | ||
838 | if (adapter->rx_eitr) | |
839 | IXGBE_WRITE_REG(hw, IXGBE_EITR(0), | |
840 | EITR_INTS_PER_SEC_TO_REG(adapter->rx_eitr)); | |
841 | ||
842 | /* for re-triggering the interrupt in non-NAPI mode */ | |
843 | adapter->rx_ring[0].eims_value = (1 << IXGBE_MSIX_VECTOR(0)); | |
844 | adapter->tx_ring[0].eims_value = (1 << IXGBE_MSIX_VECTOR(0)); | |
845 | ||
846 | ixgbe_set_ivar(adapter, IXGBE_IVAR_RX_QUEUE(0), 0); | |
847 | for (i = 0; i < adapter->num_tx_queues; i++) | |
848 | ixgbe_set_ivar(adapter, IXGBE_IVAR_TX_QUEUE(i), i); | |
849 | } | |
850 | ||
851 | /** | |
852 | * ixgbe_configure_tx - Configure 8254x Transmit Unit after Reset | |
853 | * @adapter: board private structure | |
854 | * | |
855 | * Configure the Tx unit of the MAC after a reset. | |
856 | **/ | |
857 | static void ixgbe_configure_tx(struct ixgbe_adapter *adapter) | |
858 | { | |
859 | u64 tdba; | |
860 | struct ixgbe_hw *hw = &adapter->hw; | |
861 | u32 i, tdlen; | |
862 | ||
863 | /* Setup the HW Tx Head and Tail descriptor pointers */ | |
864 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
865 | tdba = adapter->tx_ring[i].dma; | |
866 | tdlen = adapter->tx_ring[i].count * | |
867 | sizeof(union ixgbe_adv_tx_desc); | |
868 | IXGBE_WRITE_REG(hw, IXGBE_TDBAL(i), (tdba & DMA_32BIT_MASK)); | |
869 | IXGBE_WRITE_REG(hw, IXGBE_TDBAH(i), (tdba >> 32)); | |
870 | IXGBE_WRITE_REG(hw, IXGBE_TDLEN(i), tdlen); | |
871 | IXGBE_WRITE_REG(hw, IXGBE_TDH(i), 0); | |
872 | IXGBE_WRITE_REG(hw, IXGBE_TDT(i), 0); | |
873 | adapter->tx_ring[i].head = IXGBE_TDH(i); | |
874 | adapter->tx_ring[i].tail = IXGBE_TDT(i); | |
875 | } | |
876 | ||
877 | IXGBE_WRITE_REG(hw, IXGBE_TIPG, IXGBE_TIPG_FIBER_DEFAULT); | |
878 | } | |
879 | ||
880 | #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \ | |
881 | (((S) & (PAGE_SIZE - 1)) ? 1 : 0)) | |
882 | ||
883 | #define IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT 2 | |
884 | /** | |
885 | * ixgbe_configure_rx - Configure 8254x Receive Unit after Reset | |
886 | * @adapter: board private structure | |
887 | * | |
888 | * Configure the Rx unit of the MAC after a reset. | |
889 | **/ | |
890 | static void ixgbe_configure_rx(struct ixgbe_adapter *adapter) | |
891 | { | |
892 | u64 rdba; | |
893 | struct ixgbe_hw *hw = &adapter->hw; | |
894 | struct net_device *netdev = adapter->netdev; | |
895 | int max_frame = netdev->mtu + ETH_HLEN + ETH_FCS_LEN; | |
896 | u32 rdlen, rxctrl, rxcsum; | |
897 | u32 random[10]; | |
898 | u32 reta, mrqc; | |
899 | int i; | |
900 | u32 fctrl, hlreg0; | |
901 | u32 srrctl; | |
902 | u32 pages; | |
903 | ||
904 | /* Decide whether to use packet split mode or not */ | |
905 | if (netdev->mtu > ETH_DATA_LEN) | |
906 | adapter->flags |= IXGBE_FLAG_RX_PS_ENABLED; | |
907 | else | |
908 | adapter->flags &= ~IXGBE_FLAG_RX_PS_ENABLED; | |
909 | ||
910 | /* Set the RX buffer length according to the mode */ | |
911 | if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) { | |
912 | adapter->rx_buf_len = IXGBE_RX_HDR_SIZE; | |
913 | } else { | |
914 | if (netdev->mtu <= ETH_DATA_LEN) | |
915 | adapter->rx_buf_len = MAXIMUM_ETHERNET_VLAN_SIZE; | |
916 | else | |
917 | adapter->rx_buf_len = ALIGN(max_frame, 1024); | |
918 | } | |
919 | ||
920 | fctrl = IXGBE_READ_REG(&adapter->hw, IXGBE_FCTRL); | |
921 | fctrl |= IXGBE_FCTRL_BAM; | |
922 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_FCTRL, fctrl); | |
923 | ||
924 | hlreg0 = IXGBE_READ_REG(hw, IXGBE_HLREG0); | |
925 | if (adapter->netdev->mtu <= ETH_DATA_LEN) | |
926 | hlreg0 &= ~IXGBE_HLREG0_JUMBOEN; | |
927 | else | |
928 | hlreg0 |= IXGBE_HLREG0_JUMBOEN; | |
929 | IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0); | |
930 | ||
931 | pages = PAGE_USE_COUNT(adapter->netdev->mtu); | |
932 | ||
933 | srrctl = IXGBE_READ_REG(&adapter->hw, IXGBE_SRRCTL(0)); | |
934 | srrctl &= ~IXGBE_SRRCTL_BSIZEHDR_MASK; | |
935 | srrctl &= ~IXGBE_SRRCTL_BSIZEPKT_MASK; | |
936 | ||
937 | if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) { | |
938 | srrctl |= PAGE_SIZE >> IXGBE_SRRCTL_BSIZEPKT_SHIFT; | |
939 | srrctl |= IXGBE_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS; | |
940 | srrctl |= ((IXGBE_RX_HDR_SIZE << | |
941 | IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT) & | |
942 | IXGBE_SRRCTL_BSIZEHDR_MASK); | |
943 | } else { | |
944 | srrctl |= IXGBE_SRRCTL_DESCTYPE_ADV_ONEBUF; | |
945 | ||
946 | if (adapter->rx_buf_len == MAXIMUM_ETHERNET_VLAN_SIZE) | |
947 | srrctl |= | |
948 | IXGBE_RXBUFFER_2048 >> IXGBE_SRRCTL_BSIZEPKT_SHIFT; | |
949 | else | |
950 | srrctl |= | |
951 | adapter->rx_buf_len >> IXGBE_SRRCTL_BSIZEPKT_SHIFT; | |
952 | } | |
953 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_SRRCTL(0), srrctl); | |
954 | ||
955 | rdlen = adapter->rx_ring[0].count * sizeof(union ixgbe_adv_rx_desc); | |
956 | /* disable receives while setting up the descriptors */ | |
957 | rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL); | |
958 | IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, rxctrl & ~IXGBE_RXCTRL_RXEN); | |
959 | ||
960 | /* Setup the HW Rx Head and Tail Descriptor Pointers and | |
961 | * the Base and Length of the Rx Descriptor Ring */ | |
962 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
963 | rdba = adapter->rx_ring[i].dma; | |
964 | IXGBE_WRITE_REG(hw, IXGBE_RDBAL(i), (rdba & DMA_32BIT_MASK)); | |
965 | IXGBE_WRITE_REG(hw, IXGBE_RDBAH(i), (rdba >> 32)); | |
966 | IXGBE_WRITE_REG(hw, IXGBE_RDLEN(i), rdlen); | |
967 | IXGBE_WRITE_REG(hw, IXGBE_RDH(i), 0); | |
968 | IXGBE_WRITE_REG(hw, IXGBE_RDT(i), 0); | |
969 | adapter->rx_ring[i].head = IXGBE_RDH(i); | |
970 | adapter->rx_ring[i].tail = IXGBE_RDT(i); | |
971 | } | |
972 | ||
973 | if (adapter->num_rx_queues > 1) { | |
974 | /* Random 40bytes used as random key in RSS hash function */ | |
975 | get_random_bytes(&random[0], 40); | |
976 | ||
977 | switch (adapter->num_rx_queues) { | |
978 | case 8: | |
979 | case 4: | |
980 | /* Bits [3:0] in each byte refers the Rx queue no */ | |
981 | reta = 0x00010203; | |
982 | break; | |
983 | case 2: | |
984 | reta = 0x00010001; | |
985 | break; | |
986 | default: | |
987 | reta = 0x00000000; | |
988 | break; | |
989 | } | |
990 | ||
991 | /* Fill out redirection table */ | |
992 | for (i = 0; i < 32; i++) { | |
993 | IXGBE_WRITE_REG_ARRAY(hw, IXGBE_RETA(0), i, reta); | |
994 | if (adapter->num_rx_queues > 4) { | |
995 | i++; | |
996 | IXGBE_WRITE_REG_ARRAY(hw, IXGBE_RETA(0), i, | |
997 | 0x04050607); | |
998 | } | |
999 | } | |
1000 | ||
1001 | /* Fill out hash function seeds */ | |
1002 | for (i = 0; i < 10; i++) | |
1003 | IXGBE_WRITE_REG_ARRAY(hw, IXGBE_RSSRK(0), i, random[i]); | |
1004 | ||
1005 | mrqc = IXGBE_MRQC_RSSEN | |
1006 | /* Perform hash on these packet types */ | |
1007 | | IXGBE_MRQC_RSS_FIELD_IPV4 | |
1008 | | IXGBE_MRQC_RSS_FIELD_IPV4_TCP | |
1009 | | IXGBE_MRQC_RSS_FIELD_IPV4_UDP | |
1010 | | IXGBE_MRQC_RSS_FIELD_IPV6_EX_TCP | |
1011 | | IXGBE_MRQC_RSS_FIELD_IPV6_EX | |
1012 | | IXGBE_MRQC_RSS_FIELD_IPV6 | |
1013 | | IXGBE_MRQC_RSS_FIELD_IPV6_TCP | |
1014 | | IXGBE_MRQC_RSS_FIELD_IPV6_UDP | |
1015 | | IXGBE_MRQC_RSS_FIELD_IPV6_EX_UDP; | |
1016 | IXGBE_WRITE_REG(hw, IXGBE_MRQC, mrqc); | |
1017 | ||
1018 | /* Multiqueue and packet checksumming are mutually exclusive. */ | |
1019 | rxcsum = IXGBE_READ_REG(hw, IXGBE_RXCSUM); | |
1020 | rxcsum |= IXGBE_RXCSUM_PCSD; | |
1021 | IXGBE_WRITE_REG(hw, IXGBE_RXCSUM, rxcsum); | |
1022 | } else { | |
1023 | /* Enable Receive Checksum Offload for TCP and UDP */ | |
1024 | rxcsum = IXGBE_READ_REG(hw, IXGBE_RXCSUM); | |
1025 | if (adapter->flags & IXGBE_FLAG_RX_CSUM_ENABLED) { | |
1026 | /* Enable IPv4 payload checksum for UDP fragments | |
1027 | * Must be used in conjunction with packet-split. */ | |
1028 | rxcsum |= IXGBE_RXCSUM_IPPCSE; | |
1029 | } else { | |
1030 | /* don't need to clear IPPCSE as it defaults to 0 */ | |
1031 | } | |
1032 | IXGBE_WRITE_REG(hw, IXGBE_RXCSUM, rxcsum); | |
1033 | } | |
1034 | /* Enable Receives */ | |
1035 | IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, rxctrl); | |
1036 | rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL); | |
1037 | } | |
1038 | ||
1039 | static void ixgbe_vlan_rx_register(struct net_device *netdev, | |
1040 | struct vlan_group *grp) | |
1041 | { | |
1042 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
1043 | u32 ctrl; | |
1044 | ||
1045 | ixgbe_irq_disable(adapter); | |
1046 | adapter->vlgrp = grp; | |
1047 | ||
1048 | if (grp) { | |
1049 | /* enable VLAN tag insert/strip */ | |
1050 | ctrl = IXGBE_READ_REG(&adapter->hw, IXGBE_VLNCTRL); | |
1051 | ctrl |= IXGBE_VLNCTRL_VME | IXGBE_VLNCTRL_VFE; | |
1052 | ctrl &= ~IXGBE_VLNCTRL_CFIEN; | |
1053 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_VLNCTRL, ctrl); | |
1054 | } | |
1055 | ||
1056 | ixgbe_irq_enable(adapter); | |
1057 | } | |
1058 | ||
1059 | static void ixgbe_vlan_rx_add_vid(struct net_device *netdev, u16 vid) | |
1060 | { | |
1061 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
1062 | ||
1063 | /* add VID to filter table */ | |
1064 | ixgbe_set_vfta(&adapter->hw, vid, 0, true); | |
1065 | } | |
1066 | ||
1067 | static void ixgbe_vlan_rx_kill_vid(struct net_device *netdev, u16 vid) | |
1068 | { | |
1069 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
1070 | ||
1071 | ixgbe_irq_disable(adapter); | |
1072 | vlan_group_set_device(adapter->vlgrp, vid, NULL); | |
1073 | ixgbe_irq_enable(adapter); | |
1074 | ||
1075 | /* remove VID from filter table */ | |
1076 | ixgbe_set_vfta(&adapter->hw, vid, 0, false); | |
1077 | } | |
1078 | ||
1079 | static void ixgbe_restore_vlan(struct ixgbe_adapter *adapter) | |
1080 | { | |
1081 | ixgbe_vlan_rx_register(adapter->netdev, adapter->vlgrp); | |
1082 | ||
1083 | if (adapter->vlgrp) { | |
1084 | u16 vid; | |
1085 | for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) { | |
1086 | if (!vlan_group_get_device(adapter->vlgrp, vid)) | |
1087 | continue; | |
1088 | ixgbe_vlan_rx_add_vid(adapter->netdev, vid); | |
1089 | } | |
1090 | } | |
1091 | } | |
1092 | ||
1093 | /** | |
1094 | * ixgbe_set_multi - Multicast and Promiscuous mode set | |
1095 | * @netdev: network interface device structure | |
1096 | * | |
1097 | * The set_multi entry point is called whenever the multicast address | |
1098 | * list or the network interface flags are updated. This routine is | |
1099 | * responsible for configuring the hardware for proper multicast, | |
1100 | * promiscuous mode, and all-multi behavior. | |
1101 | **/ | |
1102 | static void ixgbe_set_multi(struct net_device *netdev) | |
1103 | { | |
1104 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
1105 | struct ixgbe_hw *hw = &adapter->hw; | |
1106 | struct dev_mc_list *mc_ptr; | |
1107 | u8 *mta_list; | |
1108 | u32 fctrl; | |
1109 | int i; | |
1110 | ||
1111 | /* Check for Promiscuous and All Multicast modes */ | |
1112 | ||
1113 | fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL); | |
1114 | ||
1115 | if (netdev->flags & IFF_PROMISC) { | |
1116 | fctrl |= (IXGBE_FCTRL_UPE | IXGBE_FCTRL_MPE); | |
1117 | } else if (netdev->flags & IFF_ALLMULTI) { | |
1118 | fctrl |= IXGBE_FCTRL_MPE; | |
1119 | fctrl &= ~IXGBE_FCTRL_UPE; | |
1120 | } else { | |
1121 | fctrl &= ~(IXGBE_FCTRL_UPE | IXGBE_FCTRL_MPE); | |
1122 | } | |
1123 | ||
1124 | IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl); | |
1125 | ||
1126 | if (netdev->mc_count) { | |
1127 | mta_list = kcalloc(netdev->mc_count, ETH_ALEN, GFP_ATOMIC); | |
1128 | if (!mta_list) | |
1129 | return; | |
1130 | ||
1131 | /* Shared function expects packed array of only addresses. */ | |
1132 | mc_ptr = netdev->mc_list; | |
1133 | ||
1134 | for (i = 0; i < netdev->mc_count; i++) { | |
1135 | if (!mc_ptr) | |
1136 | break; | |
1137 | memcpy(mta_list + (i * ETH_ALEN), mc_ptr->dmi_addr, | |
1138 | ETH_ALEN); | |
1139 | mc_ptr = mc_ptr->next; | |
1140 | } | |
1141 | ||
1142 | ixgbe_update_mc_addr_list(hw, mta_list, i, 0); | |
1143 | kfree(mta_list); | |
1144 | } else { | |
1145 | ixgbe_update_mc_addr_list(hw, NULL, 0, 0); | |
1146 | } | |
1147 | ||
1148 | } | |
1149 | ||
1150 | static void ixgbe_configure(struct ixgbe_adapter *adapter) | |
1151 | { | |
1152 | struct net_device *netdev = adapter->netdev; | |
1153 | int i; | |
1154 | ||
1155 | ixgbe_set_multi(netdev); | |
1156 | ||
1157 | ixgbe_restore_vlan(adapter); | |
1158 | ||
1159 | ixgbe_configure_tx(adapter); | |
1160 | ixgbe_configure_rx(adapter); | |
1161 | for (i = 0; i < adapter->num_rx_queues; i++) | |
1162 | ixgbe_alloc_rx_buffers(adapter, &adapter->rx_ring[i], | |
1163 | (adapter->rx_ring[i].count - 1)); | |
1164 | } | |
1165 | ||
1166 | static int ixgbe_up_complete(struct ixgbe_adapter *adapter) | |
1167 | { | |
1168 | struct net_device *netdev = adapter->netdev; | |
1169 | int i; | |
1170 | u32 gpie = 0; | |
1171 | struct ixgbe_hw *hw = &adapter->hw; | |
1172 | u32 txdctl, rxdctl, mhadd; | |
1173 | int max_frame = netdev->mtu + ETH_HLEN + ETH_FCS_LEN; | |
1174 | ||
1175 | if (adapter->flags & (IXGBE_FLAG_MSIX_ENABLED | | |
1176 | IXGBE_FLAG_MSI_ENABLED)) { | |
1177 | if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) { | |
1178 | gpie = (IXGBE_GPIE_MSIX_MODE | IXGBE_GPIE_EIAME | | |
1179 | IXGBE_GPIE_PBA_SUPPORT | IXGBE_GPIE_OCD); | |
1180 | } else { | |
1181 | /* MSI only */ | |
1182 | gpie = (IXGBE_GPIE_EIAME | | |
1183 | IXGBE_GPIE_PBA_SUPPORT); | |
1184 | } | |
1185 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_GPIE, gpie); | |
1186 | gpie = IXGBE_READ_REG(&adapter->hw, IXGBE_GPIE); | |
1187 | } | |
1188 | ||
1189 | mhadd = IXGBE_READ_REG(hw, IXGBE_MHADD); | |
1190 | ||
1191 | if (max_frame != (mhadd >> IXGBE_MHADD_MFS_SHIFT)) { | |
1192 | mhadd &= ~IXGBE_MHADD_MFS_MASK; | |
1193 | mhadd |= max_frame << IXGBE_MHADD_MFS_SHIFT; | |
1194 | ||
1195 | IXGBE_WRITE_REG(hw, IXGBE_MHADD, mhadd); | |
1196 | } | |
1197 | ||
1198 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
1199 | txdctl = IXGBE_READ_REG(&adapter->hw, IXGBE_TXDCTL(i)); | |
1200 | txdctl |= IXGBE_TXDCTL_ENABLE; | |
1201 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_TXDCTL(i), txdctl); | |
1202 | } | |
1203 | ||
1204 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
1205 | rxdctl = IXGBE_READ_REG(&adapter->hw, IXGBE_RXDCTL(i)); | |
1206 | rxdctl |= IXGBE_RXDCTL_ENABLE; | |
1207 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_RXDCTL(i), rxdctl); | |
1208 | } | |
1209 | /* enable all receives */ | |
1210 | rxdctl = IXGBE_READ_REG(hw, IXGBE_RXCTRL); | |
1211 | rxdctl |= (IXGBE_RXCTRL_DMBYPS | IXGBE_RXCTRL_RXEN); | |
1212 | IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, rxdctl); | |
1213 | ||
1214 | if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) | |
1215 | ixgbe_configure_msix(adapter); | |
1216 | else | |
1217 | ixgbe_configure_msi_and_legacy(adapter); | |
1218 | ||
1219 | clear_bit(__IXGBE_DOWN, &adapter->state); | |
1220 | napi_enable(&adapter->napi); | |
1221 | ixgbe_irq_enable(adapter); | |
1222 | ||
1223 | /* bring the link up in the watchdog, this could race with our first | |
1224 | * link up interrupt but shouldn't be a problem */ | |
1225 | mod_timer(&adapter->watchdog_timer, jiffies); | |
1226 | return 0; | |
1227 | } | |
1228 | ||
1229 | int ixgbe_up(struct ixgbe_adapter *adapter) | |
1230 | { | |
1231 | /* hardware has been reset, we need to reload some things */ | |
1232 | ixgbe_configure(adapter); | |
1233 | ||
1234 | return ixgbe_up_complete(adapter); | |
1235 | } | |
1236 | ||
1237 | void ixgbe_reset(struct ixgbe_adapter *adapter) | |
1238 | { | |
1239 | if (ixgbe_init_hw(&adapter->hw)) | |
1240 | DPRINTK(PROBE, ERR, "Hardware Error\n"); | |
1241 | ||
1242 | /* reprogram the RAR[0] in case user changed it. */ | |
1243 | ixgbe_set_rar(&adapter->hw, 0, adapter->hw.mac.addr, 0, IXGBE_RAH_AV); | |
1244 | ||
1245 | } | |
1246 | ||
1247 | #ifdef CONFIG_PM | |
1248 | static int ixgbe_resume(struct pci_dev *pdev) | |
1249 | { | |
1250 | struct net_device *netdev = pci_get_drvdata(pdev); | |
1251 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
1252 | u32 err, num_rx_queues = adapter->num_rx_queues; | |
1253 | ||
1254 | pci_set_power_state(pdev, PCI_D0); | |
1255 | pci_restore_state(pdev); | |
1256 | err = pci_enable_device(pdev); | |
1257 | if (err) { | |
1258 | printk(KERN_ERR "ixgbe: Cannot enable PCI device from " \ | |
1259 | "suspend\n"); | |
1260 | return err; | |
1261 | } | |
1262 | pci_set_master(pdev); | |
1263 | ||
1264 | pci_enable_wake(pdev, PCI_D3hot, 0); | |
1265 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
1266 | ||
1267 | if (netif_running(netdev)) { | |
1268 | err = ixgbe_request_irq(adapter, &num_rx_queues); | |
1269 | if (err) | |
1270 | return err; | |
1271 | } | |
1272 | ||
1273 | ixgbe_reset(adapter); | |
1274 | ||
1275 | if (netif_running(netdev)) | |
1276 | ixgbe_up(adapter); | |
1277 | ||
1278 | netif_device_attach(netdev); | |
1279 | ||
1280 | return 0; | |
1281 | } | |
1282 | #endif | |
1283 | ||
1284 | /** | |
1285 | * ixgbe_clean_rx_ring - Free Rx Buffers per Queue | |
1286 | * @adapter: board private structure | |
1287 | * @rx_ring: ring to free buffers from | |
1288 | **/ | |
1289 | static void ixgbe_clean_rx_ring(struct ixgbe_adapter *adapter, | |
1290 | struct ixgbe_ring *rx_ring) | |
1291 | { | |
1292 | struct pci_dev *pdev = adapter->pdev; | |
1293 | unsigned long size; | |
1294 | unsigned int i; | |
1295 | ||
1296 | /* Free all the Rx ring sk_buffs */ | |
1297 | ||
1298 | for (i = 0; i < rx_ring->count; i++) { | |
1299 | struct ixgbe_rx_buffer *rx_buffer_info; | |
1300 | ||
1301 | rx_buffer_info = &rx_ring->rx_buffer_info[i]; | |
1302 | if (rx_buffer_info->dma) { | |
1303 | pci_unmap_single(pdev, rx_buffer_info->dma, | |
1304 | adapter->rx_buf_len, | |
1305 | PCI_DMA_FROMDEVICE); | |
1306 | rx_buffer_info->dma = 0; | |
1307 | } | |
1308 | if (rx_buffer_info->skb) { | |
1309 | dev_kfree_skb(rx_buffer_info->skb); | |
1310 | rx_buffer_info->skb = NULL; | |
1311 | } | |
1312 | if (!rx_buffer_info->page) | |
1313 | continue; | |
1314 | pci_unmap_page(pdev, rx_buffer_info->page_dma, PAGE_SIZE, | |
1315 | PCI_DMA_FROMDEVICE); | |
1316 | rx_buffer_info->page_dma = 0; | |
1317 | ||
1318 | put_page(rx_buffer_info->page); | |
1319 | rx_buffer_info->page = NULL; | |
1320 | } | |
1321 | ||
1322 | size = sizeof(struct ixgbe_rx_buffer) * rx_ring->count; | |
1323 | memset(rx_ring->rx_buffer_info, 0, size); | |
1324 | ||
1325 | /* Zero out the descriptor ring */ | |
1326 | memset(rx_ring->desc, 0, rx_ring->size); | |
1327 | ||
1328 | rx_ring->next_to_clean = 0; | |
1329 | rx_ring->next_to_use = 0; | |
1330 | ||
1331 | writel(0, adapter->hw.hw_addr + rx_ring->head); | |
1332 | writel(0, adapter->hw.hw_addr + rx_ring->tail); | |
1333 | } | |
1334 | ||
1335 | /** | |
1336 | * ixgbe_clean_tx_ring - Free Tx Buffers | |
1337 | * @adapter: board private structure | |
1338 | * @tx_ring: ring to be cleaned | |
1339 | **/ | |
1340 | static void ixgbe_clean_tx_ring(struct ixgbe_adapter *adapter, | |
1341 | struct ixgbe_ring *tx_ring) | |
1342 | { | |
1343 | struct ixgbe_tx_buffer *tx_buffer_info; | |
1344 | unsigned long size; | |
1345 | unsigned int i; | |
1346 | ||
1347 | /* Free all the Tx ring sk_buffs */ | |
1348 | ||
1349 | for (i = 0; i < tx_ring->count; i++) { | |
1350 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; | |
1351 | ixgbe_unmap_and_free_tx_resource(adapter, tx_buffer_info); | |
1352 | } | |
1353 | ||
1354 | size = sizeof(struct ixgbe_tx_buffer) * tx_ring->count; | |
1355 | memset(tx_ring->tx_buffer_info, 0, size); | |
1356 | ||
1357 | /* Zero out the descriptor ring */ | |
1358 | memset(tx_ring->desc, 0, tx_ring->size); | |
1359 | ||
1360 | tx_ring->next_to_use = 0; | |
1361 | tx_ring->next_to_clean = 0; | |
1362 | ||
1363 | writel(0, adapter->hw.hw_addr + tx_ring->head); | |
1364 | writel(0, adapter->hw.hw_addr + tx_ring->tail); | |
1365 | } | |
1366 | ||
1367 | /** | |
1368 | * ixgbe_clean_all_tx_rings - Free Tx Buffers for all queues | |
1369 | * @adapter: board private structure | |
1370 | **/ | |
1371 | static void ixgbe_clean_all_tx_rings(struct ixgbe_adapter *adapter) | |
1372 | { | |
1373 | int i; | |
1374 | ||
1375 | for (i = 0; i < adapter->num_tx_queues; i++) | |
1376 | ixgbe_clean_tx_ring(adapter, &adapter->tx_ring[i]); | |
1377 | } | |
1378 | ||
1379 | /** | |
1380 | * ixgbe_clean_all_rx_rings - Free Rx Buffers for all queues | |
1381 | * @adapter: board private structure | |
1382 | **/ | |
1383 | static void ixgbe_clean_all_rx_rings(struct ixgbe_adapter *adapter) | |
1384 | { | |
1385 | int i; | |
1386 | ||
1387 | for (i = 0; i < adapter->num_rx_queues; i++) | |
1388 | ixgbe_clean_rx_ring(adapter, &adapter->rx_ring[i]); | |
1389 | } | |
1390 | ||
1391 | void ixgbe_down(struct ixgbe_adapter *adapter) | |
1392 | { | |
1393 | struct net_device *netdev = adapter->netdev; | |
1394 | u32 rxctrl; | |
1395 | ||
1396 | /* signal that we are down to the interrupt handler */ | |
1397 | set_bit(__IXGBE_DOWN, &adapter->state); | |
1398 | ||
1399 | /* disable receives */ | |
1400 | rxctrl = IXGBE_READ_REG(&adapter->hw, IXGBE_RXCTRL); | |
1401 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_RXCTRL, | |
1402 | rxctrl & ~IXGBE_RXCTRL_RXEN); | |
1403 | ||
1404 | netif_tx_disable(netdev); | |
1405 | ||
1406 | /* disable transmits in the hardware */ | |
1407 | ||
1408 | /* flush both disables */ | |
1409 | IXGBE_WRITE_FLUSH(&adapter->hw); | |
1410 | msleep(10); | |
1411 | ||
1412 | ixgbe_irq_disable(adapter); | |
1413 | ||
1414 | napi_disable(&adapter->napi); | |
1415 | del_timer_sync(&adapter->watchdog_timer); | |
1416 | ||
1417 | netif_carrier_off(netdev); | |
1418 | netif_stop_queue(netdev); | |
1419 | ||
1420 | ixgbe_reset(adapter); | |
1421 | ixgbe_clean_all_tx_rings(adapter); | |
1422 | ixgbe_clean_all_rx_rings(adapter); | |
1423 | ||
1424 | } | |
1425 | ||
1426 | static int ixgbe_suspend(struct pci_dev *pdev, pm_message_t state) | |
1427 | { | |
1428 | struct net_device *netdev = pci_get_drvdata(pdev); | |
1429 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
1430 | #ifdef CONFIG_PM | |
1431 | int retval = 0; | |
1432 | #endif | |
1433 | ||
1434 | netif_device_detach(netdev); | |
1435 | ||
1436 | if (netif_running(netdev)) { | |
1437 | ixgbe_down(adapter); | |
1438 | ixgbe_free_irq(adapter); | |
1439 | } | |
1440 | ||
1441 | #ifdef CONFIG_PM | |
1442 | retval = pci_save_state(pdev); | |
1443 | if (retval) | |
1444 | return retval; | |
1445 | #endif | |
1446 | ||
1447 | pci_enable_wake(pdev, PCI_D3hot, 0); | |
1448 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
1449 | ||
1450 | pci_disable_device(pdev); | |
1451 | ||
1452 | pci_set_power_state(pdev, pci_choose_state(pdev, state)); | |
1453 | ||
1454 | return 0; | |
1455 | } | |
1456 | ||
1457 | static void ixgbe_shutdown(struct pci_dev *pdev) | |
1458 | { | |
1459 | ixgbe_suspend(pdev, PMSG_SUSPEND); | |
1460 | } | |
1461 | ||
1462 | /** | |
1463 | * ixgbe_clean - NAPI Rx polling callback | |
1464 | * @adapter: board private structure | |
1465 | **/ | |
1466 | static int ixgbe_clean(struct napi_struct *napi, int budget) | |
1467 | { | |
1468 | struct ixgbe_adapter *adapter = container_of(napi, | |
1469 | struct ixgbe_adapter, napi); | |
1470 | struct net_device *netdev = adapter->netdev; | |
53e52c72 | 1471 | int work_done = 0; |
9a799d71 | 1472 | |
9a799d71 | 1473 | /* In non-MSIX case, there is no multi-Tx/Rx queue */ |
53e52c72 | 1474 | ixgbe_clean_tx_irq(adapter, adapter->tx_ring); |
9a799d71 AK |
1475 | ixgbe_clean_rx_irq(adapter, &adapter->rx_ring[0], &work_done, |
1476 | budget); | |
1477 | ||
53e52c72 DM |
1478 | /* If budget not fully consumed, exit the polling mode */ |
1479 | if (work_done < budget) { | |
9a799d71 AK |
1480 | netif_rx_complete(netdev, napi); |
1481 | ixgbe_irq_enable(adapter); | |
1482 | } | |
1483 | ||
1484 | return work_done; | |
1485 | } | |
1486 | ||
1487 | /** | |
1488 | * ixgbe_tx_timeout - Respond to a Tx Hang | |
1489 | * @netdev: network interface device structure | |
1490 | **/ | |
1491 | static void ixgbe_tx_timeout(struct net_device *netdev) | |
1492 | { | |
1493 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
1494 | ||
1495 | /* Do the reset outside of interrupt context */ | |
1496 | schedule_work(&adapter->reset_task); | |
1497 | } | |
1498 | ||
1499 | static void ixgbe_reset_task(struct work_struct *work) | |
1500 | { | |
1501 | struct ixgbe_adapter *adapter; | |
1502 | adapter = container_of(work, struct ixgbe_adapter, reset_task); | |
1503 | ||
1504 | adapter->tx_timeout_count++; | |
1505 | ||
1506 | ixgbe_down(adapter); | |
1507 | ixgbe_up(adapter); | |
1508 | } | |
1509 | ||
1510 | /** | |
1511 | * ixgbe_alloc_queues - Allocate memory for all rings | |
1512 | * @adapter: board private structure to initialize | |
1513 | * | |
1514 | * We allocate one ring per queue at run-time since we don't know the | |
1515 | * number of queues at compile-time. The polling_netdev array is | |
1516 | * intended for Multiqueue, but should work fine with a single queue. | |
1517 | **/ | |
1518 | static int __devinit ixgbe_alloc_queues(struct ixgbe_adapter *adapter) | |
1519 | { | |
1520 | int i; | |
1521 | ||
1522 | adapter->tx_ring = kcalloc(adapter->num_tx_queues, | |
1523 | sizeof(struct ixgbe_ring), GFP_KERNEL); | |
1524 | if (!adapter->tx_ring) | |
1525 | return -ENOMEM; | |
1526 | ||
1527 | for (i = 0; i < adapter->num_tx_queues; i++) | |
1528 | adapter->tx_ring[i].count = IXGBE_DEFAULT_TXD; | |
1529 | ||
1530 | adapter->rx_ring = kcalloc(adapter->num_rx_queues, | |
1531 | sizeof(struct ixgbe_ring), GFP_KERNEL); | |
1532 | if (!adapter->rx_ring) { | |
1533 | kfree(adapter->tx_ring); | |
1534 | return -ENOMEM; | |
1535 | } | |
1536 | ||
1537 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
1538 | adapter->rx_ring[i].adapter = adapter; | |
1539 | adapter->rx_ring[i].itr_register = IXGBE_EITR(i); | |
1540 | adapter->rx_ring[i].count = IXGBE_DEFAULT_RXD; | |
1541 | } | |
1542 | ||
1543 | return 0; | |
1544 | } | |
1545 | ||
1546 | /** | |
1547 | * ixgbe_sw_init - Initialize general software structures (struct ixgbe_adapter) | |
1548 | * @adapter: board private structure to initialize | |
1549 | * | |
1550 | * ixgbe_sw_init initializes the Adapter private data structure. | |
1551 | * Fields are initialized based on PCI device information and | |
1552 | * OS network device settings (MTU size). | |
1553 | **/ | |
1554 | static int __devinit ixgbe_sw_init(struct ixgbe_adapter *adapter) | |
1555 | { | |
1556 | struct ixgbe_hw *hw = &adapter->hw; | |
1557 | struct pci_dev *pdev = adapter->pdev; | |
1558 | ||
1559 | /* default flow control settings */ | |
1560 | hw->fc.original_type = ixgbe_fc_full; | |
1561 | hw->fc.type = ixgbe_fc_full; | |
1562 | ||
1563 | hw->mac.link_mode_select = IXGBE_AUTOC_LMS_10G_LINK_NO_AN; | |
1564 | if (hw->mac.ops.reset(hw)) { | |
1565 | dev_err(&pdev->dev, "HW Init failed\n"); | |
1566 | return -EIO; | |
1567 | } | |
1568 | if (hw->phy.ops.setup_speed(hw, IXGBE_LINK_SPEED_10GB_FULL, true, | |
1569 | false)) { | |
1570 | dev_err(&pdev->dev, "Link Speed setup failed\n"); | |
1571 | return -EIO; | |
1572 | } | |
1573 | ||
1574 | /* initialize eeprom parameters */ | |
1575 | if (ixgbe_init_eeprom(hw)) { | |
1576 | dev_err(&pdev->dev, "EEPROM initialization failed\n"); | |
1577 | return -EIO; | |
1578 | } | |
1579 | ||
1580 | /* Set the default values */ | |
1581 | adapter->num_rx_queues = IXGBE_DEFAULT_RXQ; | |
1582 | adapter->num_tx_queues = 1; | |
1583 | adapter->flags |= IXGBE_FLAG_RX_CSUM_ENABLED; | |
1584 | ||
1585 | if (ixgbe_alloc_queues(adapter)) { | |
1586 | dev_err(&pdev->dev, "Unable to allocate memory for queues\n"); | |
1587 | return -ENOMEM; | |
1588 | } | |
1589 | ||
1590 | atomic_set(&adapter->irq_sem, 1); | |
1591 | set_bit(__IXGBE_DOWN, &adapter->state); | |
1592 | ||
1593 | return 0; | |
1594 | } | |
1595 | ||
1596 | /** | |
1597 | * ixgbe_setup_tx_resources - allocate Tx resources (Descriptors) | |
1598 | * @adapter: board private structure | |
1599 | * @txdr: tx descriptor ring (for a specific queue) to setup | |
1600 | * | |
1601 | * Return 0 on success, negative on failure | |
1602 | **/ | |
1603 | int ixgbe_setup_tx_resources(struct ixgbe_adapter *adapter, | |
1604 | struct ixgbe_ring *txdr) | |
1605 | { | |
1606 | struct pci_dev *pdev = adapter->pdev; | |
1607 | int size; | |
1608 | ||
1609 | size = sizeof(struct ixgbe_tx_buffer) * txdr->count; | |
1610 | txdr->tx_buffer_info = vmalloc(size); | |
1611 | if (!txdr->tx_buffer_info) { | |
1612 | DPRINTK(PROBE, ERR, | |
1613 | "Unable to allocate memory for the transmit descriptor ring\n"); | |
1614 | return -ENOMEM; | |
1615 | } | |
1616 | memset(txdr->tx_buffer_info, 0, size); | |
1617 | ||
1618 | /* round up to nearest 4K */ | |
1619 | txdr->size = txdr->count * sizeof(union ixgbe_adv_tx_desc); | |
1620 | txdr->size = ALIGN(txdr->size, 4096); | |
1621 | ||
1622 | txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma); | |
1623 | if (!txdr->desc) { | |
1624 | vfree(txdr->tx_buffer_info); | |
1625 | DPRINTK(PROBE, ERR, | |
1626 | "Memory allocation failed for the tx desc ring\n"); | |
1627 | return -ENOMEM; | |
1628 | } | |
1629 | ||
1630 | txdr->adapter = adapter; | |
1631 | txdr->next_to_use = 0; | |
1632 | txdr->next_to_clean = 0; | |
1633 | txdr->work_limit = txdr->count; | |
1634 | spin_lock_init(&txdr->tx_lock); | |
1635 | ||
1636 | return 0; | |
1637 | } | |
1638 | ||
1639 | /** | |
1640 | * ixgbe_setup_rx_resources - allocate Rx resources (Descriptors) | |
1641 | * @adapter: board private structure | |
1642 | * @rxdr: rx descriptor ring (for a specific queue) to setup | |
1643 | * | |
1644 | * Returns 0 on success, negative on failure | |
1645 | **/ | |
1646 | int ixgbe_setup_rx_resources(struct ixgbe_adapter *adapter, | |
1647 | struct ixgbe_ring *rxdr) | |
1648 | { | |
1649 | struct pci_dev *pdev = adapter->pdev; | |
1650 | int size, desc_len; | |
1651 | ||
1652 | size = sizeof(struct ixgbe_rx_buffer) * rxdr->count; | |
1653 | rxdr->rx_buffer_info = vmalloc(size); | |
1654 | if (!rxdr->rx_buffer_info) { | |
1655 | DPRINTK(PROBE, ERR, | |
1656 | "vmalloc allocation failed for the rx desc ring\n"); | |
1657 | return -ENOMEM; | |
1658 | } | |
1659 | memset(rxdr->rx_buffer_info, 0, size); | |
1660 | ||
1661 | desc_len = sizeof(union ixgbe_adv_rx_desc); | |
1662 | ||
1663 | /* Round up to nearest 4K */ | |
1664 | rxdr->size = rxdr->count * desc_len; | |
1665 | rxdr->size = ALIGN(rxdr->size, 4096); | |
1666 | ||
1667 | rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma); | |
1668 | ||
1669 | if (!rxdr->desc) { | |
1670 | DPRINTK(PROBE, ERR, | |
1671 | "Memory allocation failed for the rx desc ring\n"); | |
1672 | vfree(rxdr->rx_buffer_info); | |
1673 | return -ENOMEM; | |
1674 | } | |
1675 | ||
1676 | rxdr->next_to_clean = 0; | |
1677 | rxdr->next_to_use = 0; | |
1678 | rxdr->adapter = adapter; | |
1679 | ||
1680 | return 0; | |
1681 | } | |
1682 | ||
1683 | /** | |
1684 | * ixgbe_free_tx_resources - Free Tx Resources per Queue | |
1685 | * @adapter: board private structure | |
1686 | * @tx_ring: Tx descriptor ring for a specific queue | |
1687 | * | |
1688 | * Free all transmit software resources | |
1689 | **/ | |
1690 | static void ixgbe_free_tx_resources(struct ixgbe_adapter *adapter, | |
1691 | struct ixgbe_ring *tx_ring) | |
1692 | { | |
1693 | struct pci_dev *pdev = adapter->pdev; | |
1694 | ||
1695 | ixgbe_clean_tx_ring(adapter, tx_ring); | |
1696 | ||
1697 | vfree(tx_ring->tx_buffer_info); | |
1698 | tx_ring->tx_buffer_info = NULL; | |
1699 | ||
1700 | pci_free_consistent(pdev, tx_ring->size, tx_ring->desc, tx_ring->dma); | |
1701 | ||
1702 | tx_ring->desc = NULL; | |
1703 | } | |
1704 | ||
1705 | /** | |
1706 | * ixgbe_free_all_tx_resources - Free Tx Resources for All Queues | |
1707 | * @adapter: board private structure | |
1708 | * | |
1709 | * Free all transmit software resources | |
1710 | **/ | |
1711 | static void ixgbe_free_all_tx_resources(struct ixgbe_adapter *adapter) | |
1712 | { | |
1713 | int i; | |
1714 | ||
1715 | for (i = 0; i < adapter->num_tx_queues; i++) | |
1716 | ixgbe_free_tx_resources(adapter, &adapter->tx_ring[i]); | |
1717 | } | |
1718 | ||
1719 | /** | |
1720 | * ixgbe_free_rx_resources - Free Rx Resources | |
1721 | * @adapter: board private structure | |
1722 | * @rx_ring: ring to clean the resources from | |
1723 | * | |
1724 | * Free all receive software resources | |
1725 | **/ | |
1726 | static void ixgbe_free_rx_resources(struct ixgbe_adapter *adapter, | |
1727 | struct ixgbe_ring *rx_ring) | |
1728 | { | |
1729 | struct pci_dev *pdev = adapter->pdev; | |
1730 | ||
1731 | ixgbe_clean_rx_ring(adapter, rx_ring); | |
1732 | ||
1733 | vfree(rx_ring->rx_buffer_info); | |
1734 | rx_ring->rx_buffer_info = NULL; | |
1735 | ||
1736 | pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma); | |
1737 | ||
1738 | rx_ring->desc = NULL; | |
1739 | } | |
1740 | ||
1741 | /** | |
1742 | * ixgbe_free_all_rx_resources - Free Rx Resources for All Queues | |
1743 | * @adapter: board private structure | |
1744 | * | |
1745 | * Free all receive software resources | |
1746 | **/ | |
1747 | static void ixgbe_free_all_rx_resources(struct ixgbe_adapter *adapter) | |
1748 | { | |
1749 | int i; | |
1750 | ||
1751 | for (i = 0; i < adapter->num_rx_queues; i++) | |
1752 | ixgbe_free_rx_resources(adapter, &adapter->rx_ring[i]); | |
1753 | } | |
1754 | ||
1755 | /** | |
1756 | * ixgbe_setup_all_tx_resources - wrapper to allocate Tx resources | |
1757 | * (Descriptors) for all queues | |
1758 | * @adapter: board private structure | |
1759 | * | |
1760 | * If this function returns with an error, then it's possible one or | |
1761 | * more of the rings is populated (while the rest are not). It is the | |
1762 | * callers duty to clean those orphaned rings. | |
1763 | * | |
1764 | * Return 0 on success, negative on failure | |
1765 | **/ | |
1766 | static int ixgbe_setup_all_tx_resources(struct ixgbe_adapter *adapter) | |
1767 | { | |
1768 | int i, err = 0; | |
1769 | ||
1770 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
1771 | err = ixgbe_setup_tx_resources(adapter, &adapter->tx_ring[i]); | |
1772 | if (err) { | |
1773 | DPRINTK(PROBE, ERR, | |
1774 | "Allocation for Tx Queue %u failed\n", i); | |
1775 | break; | |
1776 | } | |
1777 | } | |
1778 | ||
1779 | return err; | |
1780 | } | |
1781 | ||
1782 | /** | |
1783 | * ixgbe_setup_all_rx_resources - wrapper to allocate Rx resources | |
1784 | * (Descriptors) for all queues | |
1785 | * @adapter: board private structure | |
1786 | * | |
1787 | * If this function returns with an error, then it's possible one or | |
1788 | * more of the rings is populated (while the rest are not). It is the | |
1789 | * callers duty to clean those orphaned rings. | |
1790 | * | |
1791 | * Return 0 on success, negative on failure | |
1792 | **/ | |
1793 | ||
1794 | static int ixgbe_setup_all_rx_resources(struct ixgbe_adapter *adapter) | |
1795 | { | |
1796 | int i, err = 0; | |
1797 | ||
1798 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
1799 | err = ixgbe_setup_rx_resources(adapter, &adapter->rx_ring[i]); | |
1800 | if (err) { | |
1801 | DPRINTK(PROBE, ERR, | |
1802 | "Allocation for Rx Queue %u failed\n", i); | |
1803 | break; | |
1804 | } | |
1805 | } | |
1806 | ||
1807 | return err; | |
1808 | } | |
1809 | ||
1810 | /** | |
1811 | * ixgbe_change_mtu - Change the Maximum Transfer Unit | |
1812 | * @netdev: network interface device structure | |
1813 | * @new_mtu: new value for maximum frame size | |
1814 | * | |
1815 | * Returns 0 on success, negative on failure | |
1816 | **/ | |
1817 | static int ixgbe_change_mtu(struct net_device *netdev, int new_mtu) | |
1818 | { | |
1819 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
1820 | int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN; | |
1821 | ||
1822 | if ((max_frame < (ETH_ZLEN + ETH_FCS_LEN)) || | |
1823 | (max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE)) | |
1824 | return -EINVAL; | |
1825 | ||
1826 | netdev->mtu = new_mtu; | |
1827 | ||
1828 | if (netif_running(netdev)) { | |
1829 | ixgbe_down(adapter); | |
1830 | ixgbe_up(adapter); | |
1831 | } | |
1832 | ||
1833 | return 0; | |
1834 | } | |
1835 | ||
1836 | /** | |
1837 | * ixgbe_open - Called when a network interface is made active | |
1838 | * @netdev: network interface device structure | |
1839 | * | |
1840 | * Returns 0 on success, negative value on failure | |
1841 | * | |
1842 | * The open entry point is called when a network interface is made | |
1843 | * active by the system (IFF_UP). At this point all resources needed | |
1844 | * for transmit and receive operations are allocated, the interrupt | |
1845 | * handler is registered with the OS, the watchdog timer is started, | |
1846 | * and the stack is notified that the interface is ready. | |
1847 | **/ | |
1848 | static int ixgbe_open(struct net_device *netdev) | |
1849 | { | |
1850 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
1851 | int err; | |
1852 | u32 ctrl_ext; | |
1853 | u32 num_rx_queues = adapter->num_rx_queues; | |
1854 | ||
1855 | /* Let firmware know the driver has taken over */ | |
1856 | ctrl_ext = IXGBE_READ_REG(&adapter->hw, IXGBE_CTRL_EXT); | |
1857 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_CTRL_EXT, | |
1858 | ctrl_ext | IXGBE_CTRL_EXT_DRV_LOAD); | |
1859 | ||
1860 | try_intr_reinit: | |
1861 | /* allocate transmit descriptors */ | |
1862 | err = ixgbe_setup_all_tx_resources(adapter); | |
1863 | if (err) | |
1864 | goto err_setup_tx; | |
1865 | ||
1866 | if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED)) { | |
1867 | num_rx_queues = 1; | |
1868 | adapter->num_rx_queues = num_rx_queues; | |
1869 | } | |
1870 | ||
1871 | /* allocate receive descriptors */ | |
1872 | err = ixgbe_setup_all_rx_resources(adapter); | |
1873 | if (err) | |
1874 | goto err_setup_rx; | |
1875 | ||
1876 | ixgbe_configure(adapter); | |
1877 | ||
1878 | err = ixgbe_request_irq(adapter, &num_rx_queues); | |
1879 | if (err) | |
1880 | goto err_req_irq; | |
1881 | ||
1882 | /* ixgbe_request might have reduced num_rx_queues */ | |
1883 | if (num_rx_queues < adapter->num_rx_queues) { | |
1884 | /* We didn't get MSI-X, so we need to release everything, | |
1885 | * set our Rx queue count to num_rx_queues, and redo the | |
1886 | * whole init process. | |
1887 | */ | |
1888 | ixgbe_free_irq(adapter); | |
1889 | if (adapter->flags & IXGBE_FLAG_MSI_ENABLED) { | |
1890 | pci_disable_msi(adapter->pdev); | |
1891 | adapter->flags &= ~IXGBE_FLAG_MSI_ENABLED; | |
1892 | } | |
1893 | ixgbe_free_all_rx_resources(adapter); | |
1894 | ixgbe_free_all_tx_resources(adapter); | |
1895 | adapter->num_rx_queues = num_rx_queues; | |
1896 | ||
1897 | /* Reset the hardware, and start over. */ | |
1898 | ixgbe_reset(adapter); | |
1899 | ||
1900 | goto try_intr_reinit; | |
1901 | } | |
1902 | ||
1903 | err = ixgbe_up_complete(adapter); | |
1904 | if (err) | |
1905 | goto err_up; | |
1906 | ||
1907 | return 0; | |
1908 | ||
1909 | err_up: | |
1910 | ixgbe_free_irq(adapter); | |
1911 | err_req_irq: | |
1912 | ixgbe_free_all_rx_resources(adapter); | |
1913 | err_setup_rx: | |
1914 | ixgbe_free_all_tx_resources(adapter); | |
1915 | err_setup_tx: | |
1916 | ixgbe_reset(adapter); | |
1917 | ||
1918 | return err; | |
1919 | } | |
1920 | ||
1921 | /** | |
1922 | * ixgbe_close - Disables a network interface | |
1923 | * @netdev: network interface device structure | |
1924 | * | |
1925 | * Returns 0, this is not allowed to fail | |
1926 | * | |
1927 | * The close entry point is called when an interface is de-activated | |
1928 | * by the OS. The hardware is still under the drivers control, but | |
1929 | * needs to be disabled. A global MAC reset is issued to stop the | |
1930 | * hardware, and all transmit and receive resources are freed. | |
1931 | **/ | |
1932 | static int ixgbe_close(struct net_device *netdev) | |
1933 | { | |
1934 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
1935 | u32 ctrl_ext; | |
1936 | ||
1937 | ixgbe_down(adapter); | |
1938 | ixgbe_free_irq(adapter); | |
1939 | ||
1940 | ixgbe_free_all_tx_resources(adapter); | |
1941 | ixgbe_free_all_rx_resources(adapter); | |
1942 | ||
1943 | ctrl_ext = IXGBE_READ_REG(&adapter->hw, IXGBE_CTRL_EXT); | |
1944 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_CTRL_EXT, | |
1945 | ctrl_ext & ~IXGBE_CTRL_EXT_DRV_LOAD); | |
1946 | ||
1947 | return 0; | |
1948 | } | |
1949 | ||
1950 | /** | |
1951 | * ixgbe_update_stats - Update the board statistics counters. | |
1952 | * @adapter: board private structure | |
1953 | **/ | |
1954 | void ixgbe_update_stats(struct ixgbe_adapter *adapter) | |
1955 | { | |
1956 | struct ixgbe_hw *hw = &adapter->hw; | |
1957 | u64 good_rx, missed_rx, bprc; | |
1958 | ||
1959 | adapter->stats.crcerrs += IXGBE_READ_REG(hw, IXGBE_CRCERRS); | |
1960 | good_rx = IXGBE_READ_REG(hw, IXGBE_GPRC); | |
1961 | missed_rx = IXGBE_READ_REG(hw, IXGBE_MPC(0)); | |
1962 | missed_rx += IXGBE_READ_REG(hw, IXGBE_MPC(1)); | |
1963 | missed_rx += IXGBE_READ_REG(hw, IXGBE_MPC(2)); | |
1964 | missed_rx += IXGBE_READ_REG(hw, IXGBE_MPC(3)); | |
1965 | missed_rx += IXGBE_READ_REG(hw, IXGBE_MPC(4)); | |
1966 | missed_rx += IXGBE_READ_REG(hw, IXGBE_MPC(5)); | |
1967 | missed_rx += IXGBE_READ_REG(hw, IXGBE_MPC(6)); | |
1968 | missed_rx += IXGBE_READ_REG(hw, IXGBE_MPC(7)); | |
1969 | adapter->stats.gprc += (good_rx - missed_rx); | |
1970 | ||
1971 | adapter->stats.mpc[0] += missed_rx; | |
1972 | adapter->stats.gorc += IXGBE_READ_REG(hw, IXGBE_GORCH); | |
1973 | bprc = IXGBE_READ_REG(hw, IXGBE_BPRC); | |
1974 | adapter->stats.bprc += bprc; | |
1975 | adapter->stats.mprc += IXGBE_READ_REG(hw, IXGBE_MPRC); | |
1976 | adapter->stats.mprc -= bprc; | |
1977 | adapter->stats.roc += IXGBE_READ_REG(hw, IXGBE_ROC); | |
1978 | adapter->stats.prc64 += IXGBE_READ_REG(hw, IXGBE_PRC64); | |
1979 | adapter->stats.prc127 += IXGBE_READ_REG(hw, IXGBE_PRC127); | |
1980 | adapter->stats.prc255 += IXGBE_READ_REG(hw, IXGBE_PRC255); | |
1981 | adapter->stats.prc511 += IXGBE_READ_REG(hw, IXGBE_PRC511); | |
1982 | adapter->stats.prc1023 += IXGBE_READ_REG(hw, IXGBE_PRC1023); | |
1983 | adapter->stats.prc1522 += IXGBE_READ_REG(hw, IXGBE_PRC1522); | |
1984 | ||
1985 | adapter->stats.rlec += IXGBE_READ_REG(hw, IXGBE_RLEC); | |
1986 | adapter->stats.lxonrxc += IXGBE_READ_REG(hw, IXGBE_LXONRXC); | |
1987 | adapter->stats.lxontxc += IXGBE_READ_REG(hw, IXGBE_LXONTXC); | |
1988 | adapter->stats.lxoffrxc += IXGBE_READ_REG(hw, IXGBE_LXOFFRXC); | |
1989 | adapter->stats.lxofftxc += IXGBE_READ_REG(hw, IXGBE_LXOFFTXC); | |
1990 | adapter->stats.ruc += IXGBE_READ_REG(hw, IXGBE_RUC); | |
1991 | adapter->stats.gptc += IXGBE_READ_REG(hw, IXGBE_GPTC); | |
1992 | adapter->stats.gotc += IXGBE_READ_REG(hw, IXGBE_GOTCH); | |
1993 | adapter->stats.rnbc[0] += IXGBE_READ_REG(hw, IXGBE_RNBC(0)); | |
1994 | adapter->stats.ruc += IXGBE_READ_REG(hw, IXGBE_RUC); | |
1995 | adapter->stats.rfc += IXGBE_READ_REG(hw, IXGBE_RFC); | |
1996 | adapter->stats.rjc += IXGBE_READ_REG(hw, IXGBE_RJC); | |
1997 | adapter->stats.tor += IXGBE_READ_REG(hw, IXGBE_TORH); | |
1998 | adapter->stats.tpr += IXGBE_READ_REG(hw, IXGBE_TPR); | |
1999 | adapter->stats.ptc64 += IXGBE_READ_REG(hw, IXGBE_PTC64); | |
2000 | adapter->stats.ptc127 += IXGBE_READ_REG(hw, IXGBE_PTC127); | |
2001 | adapter->stats.ptc255 += IXGBE_READ_REG(hw, IXGBE_PTC255); | |
2002 | adapter->stats.ptc511 += IXGBE_READ_REG(hw, IXGBE_PTC511); | |
2003 | adapter->stats.ptc1023 += IXGBE_READ_REG(hw, IXGBE_PTC1023); | |
2004 | adapter->stats.ptc1522 += IXGBE_READ_REG(hw, IXGBE_PTC1522); | |
2005 | adapter->stats.mptc += IXGBE_READ_REG(hw, IXGBE_MPTC); | |
2006 | adapter->stats.bptc += IXGBE_READ_REG(hw, IXGBE_BPTC); | |
2007 | ||
2008 | /* Fill out the OS statistics structure */ | |
2009 | adapter->net_stats.rx_packets = adapter->stats.gprc; | |
2010 | adapter->net_stats.tx_packets = adapter->stats.gptc; | |
2011 | adapter->net_stats.rx_bytes = adapter->stats.gorc; | |
2012 | adapter->net_stats.tx_bytes = adapter->stats.gotc; | |
2013 | adapter->net_stats.multicast = adapter->stats.mprc; | |
2014 | ||
2015 | /* Rx Errors */ | |
2016 | adapter->net_stats.rx_errors = adapter->stats.crcerrs + | |
2017 | adapter->stats.rlec; | |
2018 | adapter->net_stats.rx_dropped = 0; | |
2019 | adapter->net_stats.rx_length_errors = adapter->stats.rlec; | |
2020 | adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs; | |
2021 | adapter->net_stats.rx_missed_errors = adapter->stats.mpc[0]; | |
2022 | ||
2023 | } | |
2024 | ||
2025 | /** | |
2026 | * ixgbe_watchdog - Timer Call-back | |
2027 | * @data: pointer to adapter cast into an unsigned long | |
2028 | **/ | |
2029 | static void ixgbe_watchdog(unsigned long data) | |
2030 | { | |
2031 | struct ixgbe_adapter *adapter = (struct ixgbe_adapter *)data; | |
2032 | struct net_device *netdev = adapter->netdev; | |
2033 | bool link_up; | |
2034 | u32 link_speed = 0; | |
2035 | ||
2036 | adapter->hw.phy.ops.check(&adapter->hw, &(link_speed), &link_up); | |
2037 | ||
2038 | if (link_up) { | |
2039 | if (!netif_carrier_ok(netdev)) { | |
2040 | u32 frctl = IXGBE_READ_REG(&adapter->hw, IXGBE_FCTRL); | |
2041 | u32 rmcs = IXGBE_READ_REG(&adapter->hw, IXGBE_RMCS); | |
2042 | #define FLOW_RX (frctl & IXGBE_FCTRL_RFCE) | |
2043 | #define FLOW_TX (rmcs & IXGBE_RMCS_TFCE_802_3X) | |
2044 | DPRINTK(LINK, INFO, "NIC Link is Up %s, " | |
2045 | "Flow Control: %s\n", | |
2046 | (link_speed == IXGBE_LINK_SPEED_10GB_FULL ? | |
2047 | "10 Gbps" : | |
2048 | (link_speed == IXGBE_LINK_SPEED_1GB_FULL ? | |
2049 | "1 Gpbs" : "unknown speed")), | |
2050 | ((FLOW_RX && FLOW_TX) ? "RX/TX" : | |
2051 | (FLOW_RX ? "RX" : | |
2052 | (FLOW_TX ? "TX" : "None")))); | |
2053 | ||
2054 | netif_carrier_on(netdev); | |
2055 | netif_wake_queue(netdev); | |
2056 | } else { | |
2057 | /* Force detection of hung controller */ | |
2058 | adapter->detect_tx_hung = true; | |
2059 | } | |
2060 | } else { | |
2061 | if (netif_carrier_ok(netdev)) { | |
2062 | DPRINTK(LINK, INFO, "NIC Link is Down\n"); | |
2063 | netif_carrier_off(netdev); | |
2064 | netif_stop_queue(netdev); | |
2065 | } | |
2066 | } | |
2067 | ||
2068 | ixgbe_update_stats(adapter); | |
2069 | ||
2070 | /* Reset the timer */ | |
2071 | if (!test_bit(__IXGBE_DOWN, &adapter->state)) | |
2072 | mod_timer(&adapter->watchdog_timer, | |
2073 | round_jiffies(jiffies + 2 * HZ)); | |
2074 | } | |
2075 | ||
2076 | #define IXGBE_MAX_TXD_PWR 14 | |
2077 | #define IXGBE_MAX_DATA_PER_TXD (1 << IXGBE_MAX_TXD_PWR) | |
2078 | ||
2079 | /* Tx Descriptors needed, worst case */ | |
2080 | #define TXD_USE_COUNT(S) (((S) >> IXGBE_MAX_TXD_PWR) + \ | |
2081 | (((S) & (IXGBE_MAX_DATA_PER_TXD - 1)) ? 1 : 0)) | |
2082 | #define DESC_NEEDED (TXD_USE_COUNT(IXGBE_MAX_DATA_PER_TXD) /* skb->data */ + \ | |
2083 | MAX_SKB_FRAGS * TXD_USE_COUNT(PAGE_SIZE) + 1) /* for context */ | |
2084 | ||
2085 | static int ixgbe_tso(struct ixgbe_adapter *adapter, | |
2086 | struct ixgbe_ring *tx_ring, struct sk_buff *skb, | |
2087 | u32 tx_flags, u8 *hdr_len) | |
2088 | { | |
2089 | struct ixgbe_adv_tx_context_desc *context_desc; | |
2090 | unsigned int i; | |
2091 | int err; | |
2092 | struct ixgbe_tx_buffer *tx_buffer_info; | |
2093 | u32 vlan_macip_lens = 0, type_tucmd_mlhl = 0; | |
2094 | u32 mss_l4len_idx = 0, l4len; | |
2095 | *hdr_len = 0; | |
2096 | ||
2097 | if (skb_is_gso(skb)) { | |
2098 | if (skb_header_cloned(skb)) { | |
2099 | err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); | |
2100 | if (err) | |
2101 | return err; | |
2102 | } | |
2103 | l4len = tcp_hdrlen(skb); | |
2104 | *hdr_len += l4len; | |
2105 | ||
2106 | if (skb->protocol == ntohs(ETH_P_IP)) { | |
2107 | struct iphdr *iph = ip_hdr(skb); | |
2108 | iph->tot_len = 0; | |
2109 | iph->check = 0; | |
2110 | tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, | |
2111 | iph->daddr, 0, | |
2112 | IPPROTO_TCP, | |
2113 | 0); | |
2114 | adapter->hw_tso_ctxt++; | |
2115 | } else if (skb_shinfo(skb)->gso_type == SKB_GSO_TCPV6) { | |
2116 | ipv6_hdr(skb)->payload_len = 0; | |
2117 | tcp_hdr(skb)->check = | |
2118 | ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, | |
2119 | &ipv6_hdr(skb)->daddr, | |
2120 | 0, IPPROTO_TCP, 0); | |
2121 | adapter->hw_tso6_ctxt++; | |
2122 | } | |
2123 | ||
2124 | i = tx_ring->next_to_use; | |
2125 | ||
2126 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; | |
2127 | context_desc = IXGBE_TX_CTXTDESC_ADV(*tx_ring, i); | |
2128 | ||
2129 | /* VLAN MACLEN IPLEN */ | |
2130 | if (tx_flags & IXGBE_TX_FLAGS_VLAN) | |
2131 | vlan_macip_lens |= | |
2132 | (tx_flags & IXGBE_TX_FLAGS_VLAN_MASK); | |
2133 | vlan_macip_lens |= ((skb_network_offset(skb)) << | |
2134 | IXGBE_ADVTXD_MACLEN_SHIFT); | |
2135 | *hdr_len += skb_network_offset(skb); | |
2136 | vlan_macip_lens |= | |
2137 | (skb_transport_header(skb) - skb_network_header(skb)); | |
2138 | *hdr_len += | |
2139 | (skb_transport_header(skb) - skb_network_header(skb)); | |
2140 | context_desc->vlan_macip_lens = cpu_to_le32(vlan_macip_lens); | |
2141 | context_desc->seqnum_seed = 0; | |
2142 | ||
2143 | /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */ | |
2144 | type_tucmd_mlhl |= (IXGBE_TXD_CMD_DEXT | | |
2145 | IXGBE_ADVTXD_DTYP_CTXT); | |
2146 | ||
2147 | if (skb->protocol == ntohs(ETH_P_IP)) | |
2148 | type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_IPV4; | |
2149 | type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_L4T_TCP; | |
2150 | context_desc->type_tucmd_mlhl = cpu_to_le32(type_tucmd_mlhl); | |
2151 | ||
2152 | /* MSS L4LEN IDX */ | |
2153 | mss_l4len_idx |= | |
2154 | (skb_shinfo(skb)->gso_size << IXGBE_ADVTXD_MSS_SHIFT); | |
2155 | mss_l4len_idx |= (l4len << IXGBE_ADVTXD_L4LEN_SHIFT); | |
2156 | context_desc->mss_l4len_idx = cpu_to_le32(mss_l4len_idx); | |
2157 | ||
2158 | tx_buffer_info->time_stamp = jiffies; | |
2159 | tx_buffer_info->next_to_watch = i; | |
2160 | ||
2161 | i++; | |
2162 | if (i == tx_ring->count) | |
2163 | i = 0; | |
2164 | tx_ring->next_to_use = i; | |
2165 | ||
2166 | return true; | |
2167 | } | |
2168 | return false; | |
2169 | } | |
2170 | ||
2171 | static bool ixgbe_tx_csum(struct ixgbe_adapter *adapter, | |
2172 | struct ixgbe_ring *tx_ring, | |
2173 | struct sk_buff *skb, u32 tx_flags) | |
2174 | { | |
2175 | struct ixgbe_adv_tx_context_desc *context_desc; | |
2176 | unsigned int i; | |
2177 | struct ixgbe_tx_buffer *tx_buffer_info; | |
2178 | u32 vlan_macip_lens = 0, type_tucmd_mlhl = 0; | |
2179 | ||
2180 | if (skb->ip_summed == CHECKSUM_PARTIAL || | |
2181 | (tx_flags & IXGBE_TX_FLAGS_VLAN)) { | |
2182 | i = tx_ring->next_to_use; | |
2183 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; | |
2184 | context_desc = IXGBE_TX_CTXTDESC_ADV(*tx_ring, i); | |
2185 | ||
2186 | if (tx_flags & IXGBE_TX_FLAGS_VLAN) | |
2187 | vlan_macip_lens |= | |
2188 | (tx_flags & IXGBE_TX_FLAGS_VLAN_MASK); | |
2189 | vlan_macip_lens |= (skb_network_offset(skb) << | |
2190 | IXGBE_ADVTXD_MACLEN_SHIFT); | |
2191 | if (skb->ip_summed == CHECKSUM_PARTIAL) | |
2192 | vlan_macip_lens |= (skb_transport_header(skb) - | |
2193 | skb_network_header(skb)); | |
2194 | ||
2195 | context_desc->vlan_macip_lens = cpu_to_le32(vlan_macip_lens); | |
2196 | context_desc->seqnum_seed = 0; | |
2197 | ||
2198 | type_tucmd_mlhl |= (IXGBE_TXD_CMD_DEXT | | |
2199 | IXGBE_ADVTXD_DTYP_CTXT); | |
2200 | ||
2201 | if (skb->ip_summed == CHECKSUM_PARTIAL) { | |
2202 | if (skb->protocol == ntohs(ETH_P_IP)) | |
2203 | type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_IPV4; | |
2204 | ||
2205 | if (skb->sk->sk_protocol == IPPROTO_TCP) | |
2206 | type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_L4T_TCP; | |
2207 | } | |
2208 | ||
2209 | context_desc->type_tucmd_mlhl = cpu_to_le32(type_tucmd_mlhl); | |
2210 | context_desc->mss_l4len_idx = 0; | |
2211 | ||
2212 | tx_buffer_info->time_stamp = jiffies; | |
2213 | tx_buffer_info->next_to_watch = i; | |
2214 | adapter->hw_csum_tx_good++; | |
2215 | i++; | |
2216 | if (i == tx_ring->count) | |
2217 | i = 0; | |
2218 | tx_ring->next_to_use = i; | |
2219 | ||
2220 | return true; | |
2221 | } | |
2222 | return false; | |
2223 | } | |
2224 | ||
2225 | static int ixgbe_tx_map(struct ixgbe_adapter *adapter, | |
2226 | struct ixgbe_ring *tx_ring, | |
2227 | struct sk_buff *skb, unsigned int first) | |
2228 | { | |
2229 | struct ixgbe_tx_buffer *tx_buffer_info; | |
2230 | unsigned int len = skb->len; | |
2231 | unsigned int offset = 0, size, count = 0, i; | |
2232 | unsigned int nr_frags = skb_shinfo(skb)->nr_frags; | |
2233 | unsigned int f; | |
2234 | ||
2235 | len -= skb->data_len; | |
2236 | ||
2237 | i = tx_ring->next_to_use; | |
2238 | ||
2239 | while (len) { | |
2240 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; | |
2241 | size = min(len, (uint)IXGBE_MAX_DATA_PER_TXD); | |
2242 | ||
2243 | tx_buffer_info->length = size; | |
2244 | tx_buffer_info->dma = pci_map_single(adapter->pdev, | |
2245 | skb->data + offset, | |
2246 | size, PCI_DMA_TODEVICE); | |
2247 | tx_buffer_info->time_stamp = jiffies; | |
2248 | tx_buffer_info->next_to_watch = i; | |
2249 | ||
2250 | len -= size; | |
2251 | offset += size; | |
2252 | count++; | |
2253 | i++; | |
2254 | if (i == tx_ring->count) | |
2255 | i = 0; | |
2256 | } | |
2257 | ||
2258 | for (f = 0; f < nr_frags; f++) { | |
2259 | struct skb_frag_struct *frag; | |
2260 | ||
2261 | frag = &skb_shinfo(skb)->frags[f]; | |
2262 | len = frag->size; | |
2263 | offset = frag->page_offset; | |
2264 | ||
2265 | while (len) { | |
2266 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; | |
2267 | size = min(len, (uint)IXGBE_MAX_DATA_PER_TXD); | |
2268 | ||
2269 | tx_buffer_info->length = size; | |
2270 | tx_buffer_info->dma = pci_map_page(adapter->pdev, | |
2271 | frag->page, | |
2272 | offset, | |
2273 | size, PCI_DMA_TODEVICE); | |
2274 | tx_buffer_info->time_stamp = jiffies; | |
2275 | tx_buffer_info->next_to_watch = i; | |
2276 | ||
2277 | len -= size; | |
2278 | offset += size; | |
2279 | count++; | |
2280 | i++; | |
2281 | if (i == tx_ring->count) | |
2282 | i = 0; | |
2283 | } | |
2284 | } | |
2285 | if (i == 0) | |
2286 | i = tx_ring->count - 1; | |
2287 | else | |
2288 | i = i - 1; | |
2289 | tx_ring->tx_buffer_info[i].skb = skb; | |
2290 | tx_ring->tx_buffer_info[first].next_to_watch = i; | |
2291 | ||
2292 | return count; | |
2293 | } | |
2294 | ||
2295 | static void ixgbe_tx_queue(struct ixgbe_adapter *adapter, | |
2296 | struct ixgbe_ring *tx_ring, | |
2297 | int tx_flags, int count, u32 paylen, u8 hdr_len) | |
2298 | { | |
2299 | union ixgbe_adv_tx_desc *tx_desc = NULL; | |
2300 | struct ixgbe_tx_buffer *tx_buffer_info; | |
2301 | u32 olinfo_status = 0, cmd_type_len = 0; | |
2302 | unsigned int i; | |
2303 | u32 txd_cmd = IXGBE_TXD_CMD_EOP | IXGBE_TXD_CMD_RS | IXGBE_TXD_CMD_IFCS; | |
2304 | ||
2305 | cmd_type_len |= IXGBE_ADVTXD_DTYP_DATA; | |
2306 | ||
2307 | cmd_type_len |= IXGBE_ADVTXD_DCMD_IFCS | IXGBE_ADVTXD_DCMD_DEXT; | |
2308 | ||
2309 | if (tx_flags & IXGBE_TX_FLAGS_VLAN) | |
2310 | cmd_type_len |= IXGBE_ADVTXD_DCMD_VLE; | |
2311 | ||
2312 | if (tx_flags & IXGBE_TX_FLAGS_TSO) { | |
2313 | cmd_type_len |= IXGBE_ADVTXD_DCMD_TSE; | |
2314 | ||
2315 | olinfo_status |= IXGBE_TXD_POPTS_TXSM << | |
2316 | IXGBE_ADVTXD_POPTS_SHIFT; | |
2317 | ||
2318 | if (tx_flags & IXGBE_TX_FLAGS_IPV4) | |
2319 | olinfo_status |= IXGBE_TXD_POPTS_IXSM << | |
2320 | IXGBE_ADVTXD_POPTS_SHIFT; | |
2321 | ||
2322 | } else if (tx_flags & IXGBE_TX_FLAGS_CSUM) | |
2323 | olinfo_status |= IXGBE_TXD_POPTS_TXSM << | |
2324 | IXGBE_ADVTXD_POPTS_SHIFT; | |
2325 | ||
2326 | olinfo_status |= ((paylen - hdr_len) << IXGBE_ADVTXD_PAYLEN_SHIFT); | |
2327 | ||
2328 | i = tx_ring->next_to_use; | |
2329 | while (count--) { | |
2330 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; | |
2331 | tx_desc = IXGBE_TX_DESC_ADV(*tx_ring, i); | |
2332 | tx_desc->read.buffer_addr = cpu_to_le64(tx_buffer_info->dma); | |
2333 | tx_desc->read.cmd_type_len = | |
2334 | cpu_to_le32(cmd_type_len | tx_buffer_info->length); | |
2335 | tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status); | |
2336 | ||
2337 | i++; | |
2338 | if (i == tx_ring->count) | |
2339 | i = 0; | |
2340 | } | |
2341 | ||
2342 | tx_desc->read.cmd_type_len |= cpu_to_le32(txd_cmd); | |
2343 | ||
2344 | /* | |
2345 | * Force memory writes to complete before letting h/w | |
2346 | * know there are new descriptors to fetch. (Only | |
2347 | * applicable for weak-ordered memory model archs, | |
2348 | * such as IA-64). | |
2349 | */ | |
2350 | wmb(); | |
2351 | ||
2352 | tx_ring->next_to_use = i; | |
2353 | writel(i, adapter->hw.hw_addr + tx_ring->tail); | |
2354 | } | |
2355 | ||
2356 | static int ixgbe_xmit_frame(struct sk_buff *skb, struct net_device *netdev) | |
2357 | { | |
2358 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
2359 | struct ixgbe_ring *tx_ring; | |
2360 | unsigned int len = skb->len; | |
2361 | unsigned int first; | |
2362 | unsigned int tx_flags = 0; | |
2363 | unsigned long flags = 0; | |
2364 | u8 hdr_len; | |
2365 | int tso; | |
2366 | unsigned int mss = 0; | |
2367 | int count = 0; | |
2368 | unsigned int f; | |
2369 | unsigned int nr_frags = skb_shinfo(skb)->nr_frags; | |
2370 | len -= skb->data_len; | |
2371 | ||
2372 | tx_ring = adapter->tx_ring; | |
2373 | ||
2374 | if (skb->len <= 0) { | |
2375 | dev_kfree_skb(skb); | |
2376 | return NETDEV_TX_OK; | |
2377 | } | |
2378 | mss = skb_shinfo(skb)->gso_size; | |
2379 | ||
2380 | if (mss) | |
2381 | count++; | |
2382 | else if (skb->ip_summed == CHECKSUM_PARTIAL) | |
2383 | count++; | |
2384 | ||
2385 | count += TXD_USE_COUNT(len); | |
2386 | for (f = 0; f < nr_frags; f++) | |
2387 | count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size); | |
2388 | ||
2389 | spin_lock_irqsave(&tx_ring->tx_lock, flags); | |
2390 | if (IXGBE_DESC_UNUSED(tx_ring) < (count + 2)) { | |
2391 | adapter->tx_busy++; | |
2392 | netif_stop_queue(netdev); | |
2393 | spin_unlock_irqrestore(&tx_ring->tx_lock, flags); | |
2394 | return NETDEV_TX_BUSY; | |
2395 | } | |
2396 | spin_unlock_irqrestore(&tx_ring->tx_lock, flags); | |
2397 | if (adapter->vlgrp && vlan_tx_tag_present(skb)) { | |
2398 | tx_flags |= IXGBE_TX_FLAGS_VLAN; | |
2399 | tx_flags |= (vlan_tx_tag_get(skb) << IXGBE_TX_FLAGS_VLAN_SHIFT); | |
2400 | } | |
2401 | ||
2402 | if (skb->protocol == ntohs(ETH_P_IP)) | |
2403 | tx_flags |= IXGBE_TX_FLAGS_IPV4; | |
2404 | first = tx_ring->next_to_use; | |
2405 | tso = ixgbe_tso(adapter, tx_ring, skb, tx_flags, &hdr_len); | |
2406 | if (tso < 0) { | |
2407 | dev_kfree_skb_any(skb); | |
2408 | return NETDEV_TX_OK; | |
2409 | } | |
2410 | ||
2411 | if (tso) | |
2412 | tx_flags |= IXGBE_TX_FLAGS_TSO; | |
2413 | else if (ixgbe_tx_csum(adapter, tx_ring, skb, tx_flags) && | |
2414 | (skb->ip_summed == CHECKSUM_PARTIAL)) | |
2415 | tx_flags |= IXGBE_TX_FLAGS_CSUM; | |
2416 | ||
2417 | ixgbe_tx_queue(adapter, tx_ring, tx_flags, | |
2418 | ixgbe_tx_map(adapter, tx_ring, skb, first), | |
2419 | skb->len, hdr_len); | |
2420 | ||
2421 | netdev->trans_start = jiffies; | |
2422 | ||
2423 | spin_lock_irqsave(&tx_ring->tx_lock, flags); | |
2424 | /* Make sure there is space in the ring for the next send. */ | |
2425 | if (IXGBE_DESC_UNUSED(tx_ring) < DESC_NEEDED) | |
2426 | netif_stop_queue(netdev); | |
2427 | spin_unlock_irqrestore(&tx_ring->tx_lock, flags); | |
2428 | ||
2429 | return NETDEV_TX_OK; | |
2430 | } | |
2431 | ||
2432 | /** | |
2433 | * ixgbe_get_stats - Get System Network Statistics | |
2434 | * @netdev: network interface device structure | |
2435 | * | |
2436 | * Returns the address of the device statistics structure. | |
2437 | * The statistics are actually updated from the timer callback. | |
2438 | **/ | |
2439 | static struct net_device_stats *ixgbe_get_stats(struct net_device *netdev) | |
2440 | { | |
2441 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
2442 | ||
2443 | /* only return the current stats */ | |
2444 | return &adapter->net_stats; | |
2445 | } | |
2446 | ||
2447 | /** | |
2448 | * ixgbe_set_mac - Change the Ethernet Address of the NIC | |
2449 | * @netdev: network interface device structure | |
2450 | * @p: pointer to an address structure | |
2451 | * | |
2452 | * Returns 0 on success, negative on failure | |
2453 | **/ | |
2454 | static int ixgbe_set_mac(struct net_device *netdev, void *p) | |
2455 | { | |
2456 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
2457 | struct sockaddr *addr = p; | |
2458 | ||
2459 | if (!is_valid_ether_addr(addr->sa_data)) | |
2460 | return -EADDRNOTAVAIL; | |
2461 | ||
2462 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
2463 | memcpy(adapter->hw.mac.addr, addr->sa_data, netdev->addr_len); | |
2464 | ||
2465 | ixgbe_set_rar(&adapter->hw, 0, adapter->hw.mac.addr, 0, IXGBE_RAH_AV); | |
2466 | ||
2467 | return 0; | |
2468 | } | |
2469 | ||
2470 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
2471 | /* | |
2472 | * Polling 'interrupt' - used by things like netconsole to send skbs | |
2473 | * without having to re-enable interrupts. It's not called while | |
2474 | * the interrupt routine is executing. | |
2475 | */ | |
2476 | static void ixgbe_netpoll(struct net_device *netdev) | |
2477 | { | |
2478 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
2479 | ||
2480 | disable_irq(adapter->pdev->irq); | |
2481 | adapter->flags |= IXGBE_FLAG_IN_NETPOLL; | |
2482 | ixgbe_intr(adapter->pdev->irq, netdev); | |
2483 | adapter->flags &= ~IXGBE_FLAG_IN_NETPOLL; | |
2484 | enable_irq(adapter->pdev->irq); | |
2485 | } | |
2486 | #endif | |
2487 | ||
2488 | /** | |
2489 | * ixgbe_probe - Device Initialization Routine | |
2490 | * @pdev: PCI device information struct | |
2491 | * @ent: entry in ixgbe_pci_tbl | |
2492 | * | |
2493 | * Returns 0 on success, negative on failure | |
2494 | * | |
2495 | * ixgbe_probe initializes an adapter identified by a pci_dev structure. | |
2496 | * The OS initialization, configuring of the adapter private structure, | |
2497 | * and a hardware reset occur. | |
2498 | **/ | |
2499 | static int __devinit ixgbe_probe(struct pci_dev *pdev, | |
2500 | const struct pci_device_id *ent) | |
2501 | { | |
2502 | struct net_device *netdev; | |
2503 | struct ixgbe_adapter *adapter = NULL; | |
2504 | struct ixgbe_hw *hw; | |
2505 | const struct ixgbe_info *ii = ixgbe_info_tbl[ent->driver_data]; | |
2506 | unsigned long mmio_start, mmio_len; | |
2507 | static int cards_found; | |
2508 | int i, err, pci_using_dac; | |
2509 | u16 link_status, link_speed, link_width; | |
2510 | u32 part_num; | |
2511 | ||
2512 | err = pci_enable_device(pdev); | |
2513 | if (err) | |
2514 | return err; | |
2515 | ||
2516 | if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK) && | |
2517 | !pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK)) { | |
2518 | pci_using_dac = 1; | |
2519 | } else { | |
2520 | err = pci_set_dma_mask(pdev, DMA_32BIT_MASK); | |
2521 | if (err) { | |
2522 | err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK); | |
2523 | if (err) { | |
2524 | dev_err(&pdev->dev, "No usable DMA " | |
2525 | "configuration, aborting\n"); | |
2526 | goto err_dma; | |
2527 | } | |
2528 | } | |
2529 | pci_using_dac = 0; | |
2530 | } | |
2531 | ||
2532 | err = pci_request_regions(pdev, ixgbe_driver_name); | |
2533 | if (err) { | |
2534 | dev_err(&pdev->dev, "pci_request_regions failed 0x%x\n", err); | |
2535 | goto err_pci_reg; | |
2536 | } | |
2537 | ||
2538 | pci_set_master(pdev); | |
2539 | ||
2540 | netdev = alloc_etherdev(sizeof(struct ixgbe_adapter)); | |
2541 | if (!netdev) { | |
2542 | err = -ENOMEM; | |
2543 | goto err_alloc_etherdev; | |
2544 | } | |
2545 | ||
9a799d71 AK |
2546 | SET_NETDEV_DEV(netdev, &pdev->dev); |
2547 | ||
2548 | pci_set_drvdata(pdev, netdev); | |
2549 | adapter = netdev_priv(netdev); | |
2550 | ||
2551 | adapter->netdev = netdev; | |
2552 | adapter->pdev = pdev; | |
2553 | hw = &adapter->hw; | |
2554 | hw->back = adapter; | |
2555 | adapter->msg_enable = (1 << DEFAULT_DEBUG_LEVEL_SHIFT) - 1; | |
2556 | ||
2557 | mmio_start = pci_resource_start(pdev, 0); | |
2558 | mmio_len = pci_resource_len(pdev, 0); | |
2559 | ||
2560 | hw->hw_addr = ioremap(mmio_start, mmio_len); | |
2561 | if (!hw->hw_addr) { | |
2562 | err = -EIO; | |
2563 | goto err_ioremap; | |
2564 | } | |
2565 | ||
2566 | for (i = 1; i <= 5; i++) { | |
2567 | if (pci_resource_len(pdev, i) == 0) | |
2568 | continue; | |
2569 | } | |
2570 | ||
2571 | netdev->open = &ixgbe_open; | |
2572 | netdev->stop = &ixgbe_close; | |
2573 | netdev->hard_start_xmit = &ixgbe_xmit_frame; | |
2574 | netdev->get_stats = &ixgbe_get_stats; | |
2575 | netdev->set_multicast_list = &ixgbe_set_multi; | |
2576 | netdev->set_mac_address = &ixgbe_set_mac; | |
2577 | netdev->change_mtu = &ixgbe_change_mtu; | |
2578 | ixgbe_set_ethtool_ops(netdev); | |
2579 | netdev->tx_timeout = &ixgbe_tx_timeout; | |
2580 | netdev->watchdog_timeo = 5 * HZ; | |
2581 | netif_napi_add(netdev, &adapter->napi, ixgbe_clean, 64); | |
2582 | netdev->vlan_rx_register = ixgbe_vlan_rx_register; | |
2583 | netdev->vlan_rx_add_vid = ixgbe_vlan_rx_add_vid; | |
2584 | netdev->vlan_rx_kill_vid = ixgbe_vlan_rx_kill_vid; | |
2585 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
2586 | netdev->poll_controller = ixgbe_netpoll; | |
2587 | #endif | |
2588 | strcpy(netdev->name, pci_name(pdev)); | |
2589 | ||
2590 | netdev->mem_start = mmio_start; | |
2591 | netdev->mem_end = mmio_start + mmio_len; | |
2592 | ||
2593 | adapter->bd_number = cards_found; | |
2594 | ||
2595 | /* PCI config space info */ | |
2596 | hw->vendor_id = pdev->vendor; | |
2597 | hw->device_id = pdev->device; | |
2598 | hw->revision_id = pdev->revision; | |
2599 | hw->subsystem_vendor_id = pdev->subsystem_vendor; | |
2600 | hw->subsystem_device_id = pdev->subsystem_device; | |
2601 | ||
2602 | /* Setup hw api */ | |
2603 | memcpy(&hw->mac.ops, ii->mac_ops, sizeof(hw->mac.ops)); | |
2604 | memcpy(&hw->phy.ops, ii->phy_ops, sizeof(hw->phy.ops)); | |
2605 | ||
2606 | err = ii->get_invariants(hw); | |
2607 | if (err) | |
2608 | goto err_hw_init; | |
2609 | ||
2610 | /* setup the private structure */ | |
2611 | err = ixgbe_sw_init(adapter); | |
2612 | if (err) | |
2613 | goto err_sw_init; | |
2614 | ||
2615 | netdev->features = NETIF_F_SG | | |
2616 | NETIF_F_HW_CSUM | | |
2617 | NETIF_F_HW_VLAN_TX | | |
2618 | NETIF_F_HW_VLAN_RX | | |
2619 | NETIF_F_HW_VLAN_FILTER; | |
2620 | ||
2621 | netdev->features |= NETIF_F_TSO; | |
2622 | ||
2623 | netdev->features |= NETIF_F_TSO6; | |
2624 | if (pci_using_dac) | |
2625 | netdev->features |= NETIF_F_HIGHDMA; | |
2626 | ||
2627 | ||
2628 | /* make sure the EEPROM is good */ | |
2629 | if (ixgbe_validate_eeprom_checksum(hw, NULL) < 0) { | |
2630 | dev_err(&pdev->dev, "The EEPROM Checksum Is Not Valid\n"); | |
2631 | err = -EIO; | |
2632 | goto err_eeprom; | |
2633 | } | |
2634 | ||
2635 | memcpy(netdev->dev_addr, hw->mac.perm_addr, netdev->addr_len); | |
2636 | memcpy(netdev->perm_addr, hw->mac.perm_addr, netdev->addr_len); | |
2637 | ||
2638 | if (ixgbe_validate_mac_addr(netdev->dev_addr)) { | |
2639 | err = -EIO; | |
2640 | goto err_eeprom; | |
2641 | } | |
2642 | ||
2643 | init_timer(&adapter->watchdog_timer); | |
2644 | adapter->watchdog_timer.function = &ixgbe_watchdog; | |
2645 | adapter->watchdog_timer.data = (unsigned long)adapter; | |
2646 | ||
2647 | INIT_WORK(&adapter->reset_task, ixgbe_reset_task); | |
2648 | ||
2649 | /* initialize default flow control settings */ | |
2650 | hw->fc.original_type = ixgbe_fc_full; | |
2651 | hw->fc.type = ixgbe_fc_full; | |
2652 | hw->fc.high_water = IXGBE_DEFAULT_FCRTH; | |
2653 | hw->fc.low_water = IXGBE_DEFAULT_FCRTL; | |
2654 | hw->fc.pause_time = IXGBE_DEFAULT_FCPAUSE; | |
2655 | ||
2656 | /* Interrupt Throttle Rate */ | |
2657 | adapter->rx_eitr = (1000000 / IXGBE_DEFAULT_ITR_RX_USECS); | |
2658 | adapter->tx_eitr = (1000000 / IXGBE_DEFAULT_ITR_TX_USECS); | |
2659 | ||
2660 | /* print bus type/speed/width info */ | |
2661 | pci_read_config_word(pdev, IXGBE_PCI_LINK_STATUS, &link_status); | |
2662 | link_speed = link_status & IXGBE_PCI_LINK_SPEED; | |
2663 | link_width = link_status & IXGBE_PCI_LINK_WIDTH; | |
2664 | dev_info(&pdev->dev, "(PCI Express:%s:%s) " | |
2665 | "%02x:%02x:%02x:%02x:%02x:%02x\n", | |
2666 | ((link_speed == IXGBE_PCI_LINK_SPEED_5000) ? "5.0Gb/s" : | |
2667 | (link_speed == IXGBE_PCI_LINK_SPEED_2500) ? "2.5Gb/s" : | |
2668 | "Unknown"), | |
2669 | ((link_width == IXGBE_PCI_LINK_WIDTH_8) ? "Width x8" : | |
2670 | (link_width == IXGBE_PCI_LINK_WIDTH_4) ? "Width x4" : | |
2671 | (link_width == IXGBE_PCI_LINK_WIDTH_2) ? "Width x2" : | |
2672 | (link_width == IXGBE_PCI_LINK_WIDTH_1) ? "Width x1" : | |
2673 | "Unknown"), | |
2674 | netdev->dev_addr[0], netdev->dev_addr[1], netdev->dev_addr[2], | |
2675 | netdev->dev_addr[3], netdev->dev_addr[4], netdev->dev_addr[5]); | |
2676 | ixgbe_read_part_num(hw, &part_num); | |
2677 | dev_info(&pdev->dev, "MAC: %d, PHY: %d, PBA No: %06x-%03x\n", | |
2678 | hw->mac.type, hw->phy.type, | |
2679 | (part_num >> 8), (part_num & 0xff)); | |
2680 | ||
2681 | /* reset the hardware with the new settings */ | |
2682 | ixgbe_start_hw(hw); | |
2683 | ||
2684 | netif_carrier_off(netdev); | |
2685 | netif_stop_queue(netdev); | |
2686 | ||
2687 | strcpy(netdev->name, "eth%d"); | |
2688 | err = register_netdev(netdev); | |
2689 | if (err) | |
2690 | goto err_register; | |
2691 | ||
2692 | ||
2693 | dev_info(&pdev->dev, "Intel(R) 10 Gigabit Network Connection\n"); | |
2694 | cards_found++; | |
2695 | return 0; | |
2696 | ||
2697 | err_register: | |
2698 | err_hw_init: | |
2699 | err_sw_init: | |
2700 | err_eeprom: | |
2701 | iounmap(hw->hw_addr); | |
2702 | err_ioremap: | |
2703 | free_netdev(netdev); | |
2704 | err_alloc_etherdev: | |
2705 | pci_release_regions(pdev); | |
2706 | err_pci_reg: | |
2707 | err_dma: | |
2708 | pci_disable_device(pdev); | |
2709 | return err; | |
2710 | } | |
2711 | ||
2712 | /** | |
2713 | * ixgbe_remove - Device Removal Routine | |
2714 | * @pdev: PCI device information struct | |
2715 | * | |
2716 | * ixgbe_remove is called by the PCI subsystem to alert the driver | |
2717 | * that it should release a PCI device. The could be caused by a | |
2718 | * Hot-Plug event, or because the driver is going to be removed from | |
2719 | * memory. | |
2720 | **/ | |
2721 | static void __devexit ixgbe_remove(struct pci_dev *pdev) | |
2722 | { | |
2723 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2724 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
2725 | ||
2726 | set_bit(__IXGBE_DOWN, &adapter->state); | |
2727 | del_timer_sync(&adapter->watchdog_timer); | |
2728 | ||
2729 | flush_scheduled_work(); | |
2730 | ||
2731 | unregister_netdev(netdev); | |
2732 | ||
2733 | kfree(adapter->tx_ring); | |
2734 | kfree(adapter->rx_ring); | |
2735 | ||
2736 | iounmap(adapter->hw.hw_addr); | |
2737 | pci_release_regions(pdev); | |
2738 | ||
2739 | free_netdev(netdev); | |
2740 | ||
2741 | pci_disable_device(pdev); | |
2742 | } | |
2743 | ||
2744 | /** | |
2745 | * ixgbe_io_error_detected - called when PCI error is detected | |
2746 | * @pdev: Pointer to PCI device | |
2747 | * @state: The current pci connection state | |
2748 | * | |
2749 | * This function is called after a PCI bus error affecting | |
2750 | * this device has been detected. | |
2751 | */ | |
2752 | static pci_ers_result_t ixgbe_io_error_detected(struct pci_dev *pdev, | |
2753 | pci_channel_state_t state) | |
2754 | { | |
2755 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2756 | struct ixgbe_adapter *adapter = netdev->priv; | |
2757 | ||
2758 | netif_device_detach(netdev); | |
2759 | ||
2760 | if (netif_running(netdev)) | |
2761 | ixgbe_down(adapter); | |
2762 | pci_disable_device(pdev); | |
2763 | ||
2764 | /* Request a slot slot reset. */ | |
2765 | return PCI_ERS_RESULT_NEED_RESET; | |
2766 | } | |
2767 | ||
2768 | /** | |
2769 | * ixgbe_io_slot_reset - called after the pci bus has been reset. | |
2770 | * @pdev: Pointer to PCI device | |
2771 | * | |
2772 | * Restart the card from scratch, as if from a cold-boot. | |
2773 | */ | |
2774 | static pci_ers_result_t ixgbe_io_slot_reset(struct pci_dev *pdev) | |
2775 | { | |
2776 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2777 | struct ixgbe_adapter *adapter = netdev->priv; | |
2778 | ||
2779 | if (pci_enable_device(pdev)) { | |
2780 | DPRINTK(PROBE, ERR, | |
2781 | "Cannot re-enable PCI device after reset.\n"); | |
2782 | return PCI_ERS_RESULT_DISCONNECT; | |
2783 | } | |
2784 | pci_set_master(pdev); | |
2785 | ||
2786 | pci_enable_wake(pdev, PCI_D3hot, 0); | |
2787 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
2788 | ||
2789 | ixgbe_reset(adapter); | |
2790 | ||
2791 | return PCI_ERS_RESULT_RECOVERED; | |
2792 | } | |
2793 | ||
2794 | /** | |
2795 | * ixgbe_io_resume - called when traffic can start flowing again. | |
2796 | * @pdev: Pointer to PCI device | |
2797 | * | |
2798 | * This callback is called when the error recovery driver tells us that | |
2799 | * its OK to resume normal operation. | |
2800 | */ | |
2801 | static void ixgbe_io_resume(struct pci_dev *pdev) | |
2802 | { | |
2803 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2804 | struct ixgbe_adapter *adapter = netdev->priv; | |
2805 | ||
2806 | if (netif_running(netdev)) { | |
2807 | if (ixgbe_up(adapter)) { | |
2808 | DPRINTK(PROBE, INFO, "ixgbe_up failed after reset\n"); | |
2809 | return; | |
2810 | } | |
2811 | } | |
2812 | ||
2813 | netif_device_attach(netdev); | |
2814 | ||
2815 | } | |
2816 | ||
2817 | static struct pci_error_handlers ixgbe_err_handler = { | |
2818 | .error_detected = ixgbe_io_error_detected, | |
2819 | .slot_reset = ixgbe_io_slot_reset, | |
2820 | .resume = ixgbe_io_resume, | |
2821 | }; | |
2822 | ||
2823 | static struct pci_driver ixgbe_driver = { | |
2824 | .name = ixgbe_driver_name, | |
2825 | .id_table = ixgbe_pci_tbl, | |
2826 | .probe = ixgbe_probe, | |
2827 | .remove = __devexit_p(ixgbe_remove), | |
2828 | #ifdef CONFIG_PM | |
2829 | .suspend = ixgbe_suspend, | |
2830 | .resume = ixgbe_resume, | |
2831 | #endif | |
2832 | .shutdown = ixgbe_shutdown, | |
2833 | .err_handler = &ixgbe_err_handler | |
2834 | }; | |
2835 | ||
2836 | /** | |
2837 | * ixgbe_init_module - Driver Registration Routine | |
2838 | * | |
2839 | * ixgbe_init_module is the first routine called when the driver is | |
2840 | * loaded. All it does is register with the PCI subsystem. | |
2841 | **/ | |
2842 | static int __init ixgbe_init_module(void) | |
2843 | { | |
2844 | int ret; | |
2845 | printk(KERN_INFO "%s: %s - version %s\n", ixgbe_driver_name, | |
2846 | ixgbe_driver_string, ixgbe_driver_version); | |
2847 | ||
2848 | printk(KERN_INFO "%s: %s\n", ixgbe_driver_name, ixgbe_copyright); | |
2849 | ||
2850 | ret = pci_register_driver(&ixgbe_driver); | |
2851 | return ret; | |
2852 | } | |
2853 | module_init(ixgbe_init_module); | |
2854 | ||
2855 | /** | |
2856 | * ixgbe_exit_module - Driver Exit Cleanup Routine | |
2857 | * | |
2858 | * ixgbe_exit_module is called just before the driver is removed | |
2859 | * from memory. | |
2860 | **/ | |
2861 | static void __exit ixgbe_exit_module(void) | |
2862 | { | |
2863 | pci_unregister_driver(&ixgbe_driver); | |
2864 | } | |
2865 | module_exit(ixgbe_exit_module); | |
2866 | ||
2867 | /* ixgbe_main.c */ |