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9a799d71 AK |
1 | /******************************************************************************* |
2 | ||
3 | Intel 10 Gigabit PCI Express Linux driver | |
b4617240 | 4 | Copyright(c) 1999 - 2008 Intel Corporation. |
9a799d71 AK |
5 | |
6 | This program is free software; you can redistribute it and/or modify it | |
7 | under the terms and conditions of the GNU General Public License, | |
8 | version 2, as published by the Free Software Foundation. | |
9 | ||
10 | This program is distributed in the hope it will be useful, but WITHOUT | |
11 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
12 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
13 | more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License along with | |
16 | this program; if not, write to the Free Software Foundation, Inc., | |
17 | 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. | |
18 | ||
19 | The full GNU General Public License is included in this distribution in | |
20 | the file called "COPYING". | |
21 | ||
22 | Contact Information: | |
9a799d71 AK |
23 | e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> |
24 | Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 | |
25 | ||
26 | *******************************************************************************/ | |
27 | ||
28 | #include <linux/types.h> | |
29 | #include <linux/module.h> | |
30 | #include <linux/pci.h> | |
31 | #include <linux/netdevice.h> | |
32 | #include <linux/vmalloc.h> | |
33 | #include <linux/string.h> | |
34 | #include <linux/in.h> | |
35 | #include <linux/ip.h> | |
36 | #include <linux/tcp.h> | |
37 | #include <linux/ipv6.h> | |
38 | #include <net/checksum.h> | |
39 | #include <net/ip6_checksum.h> | |
40 | #include <linux/ethtool.h> | |
41 | #include <linux/if_vlan.h> | |
42 | ||
43 | #include "ixgbe.h" | |
44 | #include "ixgbe_common.h" | |
45 | ||
46 | char ixgbe_driver_name[] = "ixgbe"; | |
9c8eb720 | 47 | static const char ixgbe_driver_string[] = |
b4617240 | 48 | "Intel(R) 10 Gigabit PCI Express Network Driver"; |
9a799d71 | 49 | |
51ac6445 | 50 | #define DRV_VERSION "1.3.30-k2" |
9c8eb720 | 51 | const char ixgbe_driver_version[] = DRV_VERSION; |
b4617240 | 52 | static char ixgbe_copyright[] = "Copyright (c) 1999-2007 Intel Corporation."; |
9a799d71 AK |
53 | |
54 | static const struct ixgbe_info *ixgbe_info_tbl[] = { | |
b4617240 | 55 | [board_82598] = &ixgbe_82598_info, |
9a799d71 AK |
56 | }; |
57 | ||
58 | /* ixgbe_pci_tbl - PCI Device ID Table | |
59 | * | |
60 | * Wildcard entries (PCI_ANY_ID) should come last | |
61 | * Last entry must be all 0s | |
62 | * | |
63 | * { Vendor ID, Device ID, SubVendor ID, SubDevice ID, | |
64 | * Class, Class Mask, private data (not used) } | |
65 | */ | |
66 | static struct pci_device_id ixgbe_pci_tbl[] = { | |
67 | {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AF_DUAL_PORT), | |
3957d63d | 68 | board_82598 }, |
9a799d71 | 69 | {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AF_SINGLE_PORT), |
3957d63d | 70 | board_82598 }, |
9a799d71 | 71 | {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_CX4), |
3957d63d | 72 | board_82598 }, |
8d792cd9 JB |
73 | {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_CX4_DUAL_PORT), |
74 | board_82598 }, | |
b95f5fcb JB |
75 | {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_XF_LR), |
76 | board_82598 }, | |
9a799d71 AK |
77 | |
78 | /* required last entry */ | |
79 | {0, } | |
80 | }; | |
81 | MODULE_DEVICE_TABLE(pci, ixgbe_pci_tbl); | |
82 | ||
5dd2d332 | 83 | #ifdef CONFIG_IXGBE_DCA |
bd0362dd | 84 | static int ixgbe_notify_dca(struct notifier_block *, unsigned long event, |
b4617240 | 85 | void *p); |
bd0362dd JC |
86 | static struct notifier_block dca_notifier = { |
87 | .notifier_call = ixgbe_notify_dca, | |
88 | .next = NULL, | |
89 | .priority = 0 | |
90 | }; | |
91 | #endif | |
92 | ||
9a799d71 AK |
93 | MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>"); |
94 | MODULE_DESCRIPTION("Intel(R) 10 Gigabit PCI Express Network Driver"); | |
95 | MODULE_LICENSE("GPL"); | |
96 | MODULE_VERSION(DRV_VERSION); | |
97 | ||
98 | #define DEFAULT_DEBUG_LEVEL_SHIFT 3 | |
99 | ||
5eba3699 AV |
100 | static void ixgbe_release_hw_control(struct ixgbe_adapter *adapter) |
101 | { | |
102 | u32 ctrl_ext; | |
103 | ||
104 | /* Let firmware take over control of h/w */ | |
105 | ctrl_ext = IXGBE_READ_REG(&adapter->hw, IXGBE_CTRL_EXT); | |
106 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_CTRL_EXT, | |
b4617240 | 107 | ctrl_ext & ~IXGBE_CTRL_EXT_DRV_LOAD); |
5eba3699 AV |
108 | } |
109 | ||
110 | static void ixgbe_get_hw_control(struct ixgbe_adapter *adapter) | |
111 | { | |
112 | u32 ctrl_ext; | |
113 | ||
114 | /* Let firmware know the driver has taken over */ | |
115 | ctrl_ext = IXGBE_READ_REG(&adapter->hw, IXGBE_CTRL_EXT); | |
116 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_CTRL_EXT, | |
b4617240 | 117 | ctrl_ext | IXGBE_CTRL_EXT_DRV_LOAD); |
5eba3699 | 118 | } |
9a799d71 | 119 | |
9a799d71 | 120 | static void ixgbe_set_ivar(struct ixgbe_adapter *adapter, u16 int_alloc_entry, |
b4617240 | 121 | u8 msix_vector) |
9a799d71 AK |
122 | { |
123 | u32 ivar, index; | |
124 | ||
125 | msix_vector |= IXGBE_IVAR_ALLOC_VAL; | |
126 | index = (int_alloc_entry >> 2) & 0x1F; | |
127 | ivar = IXGBE_READ_REG(&adapter->hw, IXGBE_IVAR(index)); | |
128 | ivar &= ~(0xFF << (8 * (int_alloc_entry & 0x3))); | |
129 | ivar |= (msix_vector << (8 * (int_alloc_entry & 0x3))); | |
130 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_IVAR(index), ivar); | |
131 | } | |
132 | ||
133 | static void ixgbe_unmap_and_free_tx_resource(struct ixgbe_adapter *adapter, | |
b4617240 PW |
134 | struct ixgbe_tx_buffer |
135 | *tx_buffer_info) | |
9a799d71 AK |
136 | { |
137 | if (tx_buffer_info->dma) { | |
e01c31a5 | 138 | pci_unmap_page(adapter->pdev, tx_buffer_info->dma, |
b4617240 | 139 | tx_buffer_info->length, PCI_DMA_TODEVICE); |
9a799d71 AK |
140 | tx_buffer_info->dma = 0; |
141 | } | |
142 | if (tx_buffer_info->skb) { | |
143 | dev_kfree_skb_any(tx_buffer_info->skb); | |
144 | tx_buffer_info->skb = NULL; | |
145 | } | |
146 | /* tx_buffer_info must be completely set up in the transmit path */ | |
147 | } | |
148 | ||
149 | static inline bool ixgbe_check_tx_hang(struct ixgbe_adapter *adapter, | |
b4617240 PW |
150 | struct ixgbe_ring *tx_ring, |
151 | unsigned int eop) | |
9a799d71 | 152 | { |
e01c31a5 JB |
153 | struct ixgbe_hw *hw = &adapter->hw; |
154 | u32 head, tail; | |
155 | ||
9a799d71 | 156 | /* Detect a transmit hang in hardware, this serializes the |
e01c31a5 JB |
157 | * check with the clearing of time_stamp and movement of eop */ |
158 | head = IXGBE_READ_REG(hw, tx_ring->head); | |
159 | tail = IXGBE_READ_REG(hw, tx_ring->tail); | |
9a799d71 | 160 | adapter->detect_tx_hung = false; |
e01c31a5 JB |
161 | if ((head != tail) && |
162 | tx_ring->tx_buffer_info[eop].time_stamp && | |
9a799d71 AK |
163 | time_after(jiffies, tx_ring->tx_buffer_info[eop].time_stamp + HZ) && |
164 | !(IXGBE_READ_REG(&adapter->hw, IXGBE_TFCS) & IXGBE_TFCS_TXOFF)) { | |
165 | /* detected Tx unit hang */ | |
e01c31a5 JB |
166 | union ixgbe_adv_tx_desc *tx_desc; |
167 | tx_desc = IXGBE_TX_DESC_ADV(*tx_ring, eop); | |
9a799d71 | 168 | DPRINTK(DRV, ERR, "Detected Tx Unit Hang\n" |
e01c31a5 JB |
169 | " Tx Queue <%d>\n" |
170 | " TDH, TDT <%x>, <%x>\n" | |
9a799d71 AK |
171 | " next_to_use <%x>\n" |
172 | " next_to_clean <%x>\n" | |
173 | "tx_buffer_info[next_to_clean]\n" | |
174 | " time_stamp <%lx>\n" | |
e01c31a5 JB |
175 | " jiffies <%lx>\n", |
176 | tx_ring->queue_index, | |
177 | head, tail, | |
178 | tx_ring->next_to_use, eop, | |
179 | tx_ring->tx_buffer_info[eop].time_stamp, jiffies); | |
9a799d71 AK |
180 | return true; |
181 | } | |
182 | ||
183 | return false; | |
184 | } | |
185 | ||
b4617240 PW |
186 | #define IXGBE_MAX_TXD_PWR 14 |
187 | #define IXGBE_MAX_DATA_PER_TXD (1 << IXGBE_MAX_TXD_PWR) | |
e092be60 AV |
188 | |
189 | /* Tx Descriptors needed, worst case */ | |
190 | #define TXD_USE_COUNT(S) (((S) >> IXGBE_MAX_TXD_PWR) + \ | |
191 | (((S) & (IXGBE_MAX_DATA_PER_TXD - 1)) ? 1 : 0)) | |
192 | #define DESC_NEEDED (TXD_USE_COUNT(IXGBE_MAX_DATA_PER_TXD) /* skb->data */ + \ | |
b4617240 | 193 | MAX_SKB_FRAGS * TXD_USE_COUNT(PAGE_SIZE) + 1) /* for context */ |
e092be60 | 194 | |
e01c31a5 JB |
195 | #define GET_TX_HEAD_FROM_RING(ring) (\ |
196 | *(volatile u32 *) \ | |
197 | ((union ixgbe_adv_tx_desc *)(ring)->desc + (ring)->count)) | |
198 | static void ixgbe_tx_timeout(struct net_device *netdev); | |
199 | ||
9a799d71 AK |
200 | /** |
201 | * ixgbe_clean_tx_irq - Reclaim resources after transmit completes | |
202 | * @adapter: board private structure | |
e01c31a5 | 203 | * @tx_ring: tx ring to clean |
9a799d71 AK |
204 | **/ |
205 | static bool ixgbe_clean_tx_irq(struct ixgbe_adapter *adapter, | |
e01c31a5 | 206 | struct ixgbe_ring *tx_ring) |
9a799d71 | 207 | { |
e01c31a5 | 208 | union ixgbe_adv_tx_desc *tx_desc; |
9a799d71 | 209 | struct ixgbe_tx_buffer *tx_buffer_info; |
e01c31a5 JB |
210 | struct net_device *netdev = adapter->netdev; |
211 | struct sk_buff *skb; | |
212 | unsigned int i; | |
213 | u32 head, oldhead; | |
214 | unsigned int count = 0; | |
215 | unsigned int total_bytes = 0, total_packets = 0; | |
9a799d71 | 216 | |
e01c31a5 JB |
217 | rmb(); |
218 | head = GET_TX_HEAD_FROM_RING(tx_ring); | |
219 | head = le32_to_cpu(head); | |
9a799d71 | 220 | i = tx_ring->next_to_clean; |
e01c31a5 JB |
221 | while (1) { |
222 | while (i != head) { | |
9a799d71 AK |
223 | tx_desc = IXGBE_TX_DESC_ADV(*tx_ring, i); |
224 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; | |
e01c31a5 | 225 | skb = tx_buffer_info->skb; |
9a799d71 | 226 | |
e01c31a5 | 227 | if (skb) { |
e092be60 | 228 | unsigned int segs, bytecount; |
e01c31a5 JB |
229 | |
230 | /* gso_segs is currently only valid for tcp */ | |
e092be60 AV |
231 | segs = skb_shinfo(skb)->gso_segs ?: 1; |
232 | /* multiply data chunks by size of headers */ | |
233 | bytecount = ((segs - 1) * skb_headlen(skb)) + | |
e01c31a5 JB |
234 | skb->len; |
235 | total_packets += segs; | |
236 | total_bytes += bytecount; | |
e092be60 | 237 | } |
e01c31a5 | 238 | |
9a799d71 | 239 | ixgbe_unmap_and_free_tx_resource(adapter, |
e01c31a5 | 240 | tx_buffer_info); |
9a799d71 AK |
241 | |
242 | i++; | |
243 | if (i == tx_ring->count) | |
244 | i = 0; | |
9a799d71 | 245 | |
e01c31a5 JB |
246 | count++; |
247 | if (count == tx_ring->count) | |
248 | goto done_cleaning; | |
249 | } | |
250 | oldhead = head; | |
251 | rmb(); | |
252 | head = GET_TX_HEAD_FROM_RING(tx_ring); | |
253 | head = le32_to_cpu(head); | |
254 | if (head == oldhead) | |
255 | goto done_cleaning; | |
256 | } /* while (1) */ | |
257 | ||
258 | done_cleaning: | |
9a799d71 AK |
259 | tx_ring->next_to_clean = i; |
260 | ||
e092be60 | 261 | #define TX_WAKE_THRESHOLD (DESC_NEEDED * 2) |
e01c31a5 JB |
262 | if (unlikely(count && netif_carrier_ok(netdev) && |
263 | (IXGBE_DESC_UNUSED(tx_ring) >= TX_WAKE_THRESHOLD))) { | |
e092be60 AV |
264 | /* Make sure that anybody stopping the queue after this |
265 | * sees the new next_to_clean. | |
266 | */ | |
267 | smp_mb(); | |
30eba97a AV |
268 | if (__netif_subqueue_stopped(netdev, tx_ring->queue_index) && |
269 | !test_bit(__IXGBE_DOWN, &adapter->state)) { | |
270 | netif_wake_subqueue(netdev, tx_ring->queue_index); | |
e01c31a5 | 271 | ++adapter->restart_queue; |
30eba97a | 272 | } |
e092be60 | 273 | } |
9a799d71 | 274 | |
e01c31a5 JB |
275 | if (adapter->detect_tx_hung) { |
276 | if (ixgbe_check_tx_hang(adapter, tx_ring, i)) { | |
277 | /* schedule immediate reset if we believe we hung */ | |
278 | DPRINTK(PROBE, INFO, | |
279 | "tx hang %d detected, resetting adapter\n", | |
280 | adapter->tx_timeout_count + 1); | |
281 | ixgbe_tx_timeout(adapter->netdev); | |
282 | } | |
283 | } | |
9a799d71 | 284 | |
e01c31a5 JB |
285 | /* re-arm the interrupt */ |
286 | if ((total_packets >= tx_ring->work_limit) || | |
287 | (count == tx_ring->count)) | |
288 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS, tx_ring->v_idx); | |
9a799d71 | 289 | |
e01c31a5 JB |
290 | tx_ring->total_bytes += total_bytes; |
291 | tx_ring->total_packets += total_packets; | |
292 | tx_ring->stats.bytes += total_bytes; | |
293 | tx_ring->stats.packets += total_packets; | |
294 | adapter->net_stats.tx_bytes += total_bytes; | |
295 | adapter->net_stats.tx_packets += total_packets; | |
296 | return (total_packets ? true : false); | |
9a799d71 AK |
297 | } |
298 | ||
5dd2d332 | 299 | #ifdef CONFIG_IXGBE_DCA |
bd0362dd | 300 | static void ixgbe_update_rx_dca(struct ixgbe_adapter *adapter, |
b4617240 | 301 | struct ixgbe_ring *rx_ring) |
bd0362dd JC |
302 | { |
303 | u32 rxctrl; | |
304 | int cpu = get_cpu(); | |
3a581073 | 305 | int q = rx_ring - adapter->rx_ring; |
bd0362dd | 306 | |
3a581073 | 307 | if (rx_ring->cpu != cpu) { |
bd0362dd JC |
308 | rxctrl = IXGBE_READ_REG(&adapter->hw, IXGBE_DCA_RXCTRL(q)); |
309 | rxctrl &= ~IXGBE_DCA_RXCTRL_CPUID_MASK; | |
96b0e0f6 | 310 | rxctrl |= dca3_get_tag(&adapter->pdev->dev, cpu); |
bd0362dd JC |
311 | rxctrl |= IXGBE_DCA_RXCTRL_DESC_DCA_EN; |
312 | rxctrl |= IXGBE_DCA_RXCTRL_HEAD_DCA_EN; | |
313 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_RXCTRL(q), rxctrl); | |
3a581073 | 314 | rx_ring->cpu = cpu; |
bd0362dd JC |
315 | } |
316 | put_cpu(); | |
317 | } | |
318 | ||
319 | static void ixgbe_update_tx_dca(struct ixgbe_adapter *adapter, | |
b4617240 | 320 | struct ixgbe_ring *tx_ring) |
bd0362dd JC |
321 | { |
322 | u32 txctrl; | |
323 | int cpu = get_cpu(); | |
3a581073 | 324 | int q = tx_ring - adapter->tx_ring; |
bd0362dd | 325 | |
3a581073 | 326 | if (tx_ring->cpu != cpu) { |
bd0362dd JC |
327 | txctrl = IXGBE_READ_REG(&adapter->hw, IXGBE_DCA_TXCTRL(q)); |
328 | txctrl &= ~IXGBE_DCA_TXCTRL_CPUID_MASK; | |
96b0e0f6 | 329 | txctrl |= dca3_get_tag(&adapter->pdev->dev, cpu); |
bd0362dd JC |
330 | txctrl |= IXGBE_DCA_TXCTRL_DESC_DCA_EN; |
331 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_TXCTRL(q), txctrl); | |
3a581073 | 332 | tx_ring->cpu = cpu; |
bd0362dd JC |
333 | } |
334 | put_cpu(); | |
335 | } | |
336 | ||
337 | static void ixgbe_setup_dca(struct ixgbe_adapter *adapter) | |
338 | { | |
339 | int i; | |
340 | ||
341 | if (!(adapter->flags & IXGBE_FLAG_DCA_ENABLED)) | |
342 | return; | |
343 | ||
344 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
345 | adapter->tx_ring[i].cpu = -1; | |
346 | ixgbe_update_tx_dca(adapter, &adapter->tx_ring[i]); | |
347 | } | |
348 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
349 | adapter->rx_ring[i].cpu = -1; | |
350 | ixgbe_update_rx_dca(adapter, &adapter->rx_ring[i]); | |
351 | } | |
352 | } | |
353 | ||
354 | static int __ixgbe_notify_dca(struct device *dev, void *data) | |
355 | { | |
356 | struct net_device *netdev = dev_get_drvdata(dev); | |
357 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
358 | unsigned long event = *(unsigned long *)data; | |
359 | ||
360 | switch (event) { | |
361 | case DCA_PROVIDER_ADD: | |
96b0e0f6 JB |
362 | /* if we're already enabled, don't do it again */ |
363 | if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) | |
364 | break; | |
bd0362dd JC |
365 | /* Always use CB2 mode, difference is masked |
366 | * in the CB driver. */ | |
367 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 2); | |
652f093f | 368 | if (dca_add_requester(dev) == 0) { |
96b0e0f6 | 369 | adapter->flags |= IXGBE_FLAG_DCA_ENABLED; |
bd0362dd JC |
370 | ixgbe_setup_dca(adapter); |
371 | break; | |
372 | } | |
373 | /* Fall Through since DCA is disabled. */ | |
374 | case DCA_PROVIDER_REMOVE: | |
375 | if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) { | |
376 | dca_remove_requester(dev); | |
377 | adapter->flags &= ~IXGBE_FLAG_DCA_ENABLED; | |
378 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 1); | |
379 | } | |
380 | break; | |
381 | } | |
382 | ||
652f093f | 383 | return 0; |
bd0362dd JC |
384 | } |
385 | ||
5dd2d332 | 386 | #endif /* CONFIG_IXGBE_DCA */ |
9a799d71 AK |
387 | /** |
388 | * ixgbe_receive_skb - Send a completed packet up the stack | |
389 | * @adapter: board private structure | |
390 | * @skb: packet to send up | |
177db6ff MC |
391 | * @status: hardware indication of status of receive |
392 | * @rx_ring: rx descriptor ring (for a specific queue) to setup | |
393 | * @rx_desc: rx descriptor | |
9a799d71 AK |
394 | **/ |
395 | static void ixgbe_receive_skb(struct ixgbe_adapter *adapter, | |
b4617240 PW |
396 | struct sk_buff *skb, u8 status, |
397 | struct ixgbe_ring *ring, | |
177db6ff | 398 | union ixgbe_adv_rx_desc *rx_desc) |
9a799d71 | 399 | { |
177db6ff MC |
400 | bool is_vlan = (status & IXGBE_RXD_STAT_VP); |
401 | u16 tag = le16_to_cpu(rx_desc->wb.upper.vlan); | |
9a799d71 | 402 | |
177db6ff MC |
403 | if (adapter->netdev->features & NETIF_F_LRO && |
404 | skb->ip_summed == CHECKSUM_UNNECESSARY) { | |
9a799d71 | 405 | if (adapter->vlgrp && is_vlan) |
177db6ff MC |
406 | lro_vlan_hwaccel_receive_skb(&ring->lro_mgr, skb, |
407 | adapter->vlgrp, tag, | |
408 | rx_desc); | |
9a799d71 | 409 | else |
177db6ff MC |
410 | lro_receive_skb(&ring->lro_mgr, skb, rx_desc); |
411 | ring->lro_used = true; | |
412 | } else { | |
413 | if (!(adapter->flags & IXGBE_FLAG_IN_NETPOLL)) { | |
414 | if (adapter->vlgrp && is_vlan) | |
415 | vlan_hwaccel_receive_skb(skb, adapter->vlgrp, tag); | |
416 | else | |
417 | netif_receive_skb(skb); | |
418 | } else { | |
419 | if (adapter->vlgrp && is_vlan) | |
420 | vlan_hwaccel_rx(skb, adapter->vlgrp, tag); | |
421 | else | |
422 | netif_rx(skb); | |
423 | } | |
9a799d71 AK |
424 | } |
425 | } | |
426 | ||
e59bd25d AV |
427 | /** |
428 | * ixgbe_rx_checksum - indicate in skb if hw indicated a good cksum | |
429 | * @adapter: address of board private structure | |
430 | * @status_err: hardware indication of status of receive | |
431 | * @skb: skb currently being received and modified | |
432 | **/ | |
9a799d71 | 433 | static inline void ixgbe_rx_checksum(struct ixgbe_adapter *adapter, |
712744be | 434 | u32 status_err, struct sk_buff *skb) |
9a799d71 AK |
435 | { |
436 | skb->ip_summed = CHECKSUM_NONE; | |
437 | ||
712744be JB |
438 | /* Rx csum disabled */ |
439 | if (!(adapter->flags & IXGBE_FLAG_RX_CSUM_ENABLED)) | |
9a799d71 | 440 | return; |
e59bd25d AV |
441 | |
442 | /* if IP and error */ | |
443 | if ((status_err & IXGBE_RXD_STAT_IPCS) && | |
444 | (status_err & IXGBE_RXDADV_ERR_IPE)) { | |
9a799d71 AK |
445 | adapter->hw_csum_rx_error++; |
446 | return; | |
447 | } | |
e59bd25d AV |
448 | |
449 | if (!(status_err & IXGBE_RXD_STAT_L4CS)) | |
450 | return; | |
451 | ||
452 | if (status_err & IXGBE_RXDADV_ERR_TCPE) { | |
453 | adapter->hw_csum_rx_error++; | |
454 | return; | |
455 | } | |
456 | ||
9a799d71 | 457 | /* It must be a TCP or UDP packet with a valid checksum */ |
e59bd25d | 458 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
9a799d71 AK |
459 | adapter->hw_csum_rx_good++; |
460 | } | |
461 | ||
462 | /** | |
463 | * ixgbe_alloc_rx_buffers - Replace used receive buffers; packet split | |
464 | * @adapter: address of board private structure | |
465 | **/ | |
466 | static void ixgbe_alloc_rx_buffers(struct ixgbe_adapter *adapter, | |
7c6e0a43 JB |
467 | struct ixgbe_ring *rx_ring, |
468 | int cleaned_count) | |
9a799d71 | 469 | { |
9a799d71 AK |
470 | struct pci_dev *pdev = adapter->pdev; |
471 | union ixgbe_adv_rx_desc *rx_desc; | |
3a581073 | 472 | struct ixgbe_rx_buffer *bi; |
9a799d71 | 473 | unsigned int i; |
7c6e0a43 | 474 | unsigned int bufsz = rx_ring->rx_buf_len + NET_IP_ALIGN; |
9a799d71 AK |
475 | |
476 | i = rx_ring->next_to_use; | |
3a581073 | 477 | bi = &rx_ring->rx_buffer_info[i]; |
9a799d71 AK |
478 | |
479 | while (cleaned_count--) { | |
480 | rx_desc = IXGBE_RX_DESC_ADV(*rx_ring, i); | |
481 | ||
762f4c57 | 482 | if (!bi->page_dma && |
3a581073 | 483 | (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED)) { |
3a581073 | 484 | if (!bi->page) { |
762f4c57 JB |
485 | bi->page = alloc_page(GFP_ATOMIC); |
486 | if (!bi->page) { | |
487 | adapter->alloc_rx_page_failed++; | |
488 | goto no_buffers; | |
489 | } | |
490 | bi->page_offset = 0; | |
491 | } else { | |
492 | /* use a half page if we're re-using */ | |
493 | bi->page_offset ^= (PAGE_SIZE / 2); | |
9a799d71 | 494 | } |
762f4c57 JB |
495 | |
496 | bi->page_dma = pci_map_page(pdev, bi->page, | |
497 | bi->page_offset, | |
498 | (PAGE_SIZE / 2), | |
499 | PCI_DMA_FROMDEVICE); | |
9a799d71 AK |
500 | } |
501 | ||
3a581073 | 502 | if (!bi->skb) { |
74ce8dd2 JB |
503 | struct sk_buff *skb = netdev_alloc_skb(adapter->netdev, |
504 | bufsz); | |
9a799d71 AK |
505 | |
506 | if (!skb) { | |
507 | adapter->alloc_rx_buff_failed++; | |
508 | goto no_buffers; | |
509 | } | |
510 | ||
511 | /* | |
512 | * Make buffer alignment 2 beyond a 16 byte boundary | |
513 | * this will result in a 16 byte aligned IP header after | |
514 | * the 14 byte MAC header is removed | |
515 | */ | |
516 | skb_reserve(skb, NET_IP_ALIGN); | |
517 | ||
3a581073 JB |
518 | bi->skb = skb; |
519 | bi->dma = pci_map_single(pdev, skb->data, bufsz, | |
520 | PCI_DMA_FROMDEVICE); | |
9a799d71 AK |
521 | } |
522 | /* Refresh the desc even if buffer_addrs didn't change because | |
523 | * each write-back erases this info. */ | |
524 | if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) { | |
3a581073 JB |
525 | rx_desc->read.pkt_addr = cpu_to_le64(bi->page_dma); |
526 | rx_desc->read.hdr_addr = cpu_to_le64(bi->dma); | |
9a799d71 | 527 | } else { |
3a581073 | 528 | rx_desc->read.pkt_addr = cpu_to_le64(bi->dma); |
9a799d71 AK |
529 | } |
530 | ||
531 | i++; | |
532 | if (i == rx_ring->count) | |
533 | i = 0; | |
3a581073 | 534 | bi = &rx_ring->rx_buffer_info[i]; |
9a799d71 | 535 | } |
7c6e0a43 | 536 | |
9a799d71 AK |
537 | no_buffers: |
538 | if (rx_ring->next_to_use != i) { | |
539 | rx_ring->next_to_use = i; | |
540 | if (i-- == 0) | |
541 | i = (rx_ring->count - 1); | |
542 | ||
543 | /* | |
544 | * Force memory writes to complete before letting h/w | |
545 | * know there are new descriptors to fetch. (Only | |
546 | * applicable for weak-ordered memory model archs, | |
547 | * such as IA-64). | |
548 | */ | |
549 | wmb(); | |
550 | writel(i, adapter->hw.hw_addr + rx_ring->tail); | |
551 | } | |
552 | } | |
553 | ||
7c6e0a43 JB |
554 | static inline u16 ixgbe_get_hdr_info(union ixgbe_adv_rx_desc *rx_desc) |
555 | { | |
556 | return rx_desc->wb.lower.lo_dword.hs_rss.hdr_info; | |
557 | } | |
558 | ||
559 | static inline u16 ixgbe_get_pkt_info(union ixgbe_adv_rx_desc *rx_desc) | |
560 | { | |
561 | return rx_desc->wb.lower.lo_dword.hs_rss.pkt_info; | |
562 | } | |
563 | ||
9a799d71 | 564 | static bool ixgbe_clean_rx_irq(struct ixgbe_adapter *adapter, |
b4617240 PW |
565 | struct ixgbe_ring *rx_ring, |
566 | int *work_done, int work_to_do) | |
9a799d71 | 567 | { |
9a799d71 AK |
568 | struct pci_dev *pdev = adapter->pdev; |
569 | union ixgbe_adv_rx_desc *rx_desc, *next_rxd; | |
570 | struct ixgbe_rx_buffer *rx_buffer_info, *next_buffer; | |
571 | struct sk_buff *skb; | |
572 | unsigned int i; | |
7c6e0a43 | 573 | u32 len, staterr; |
177db6ff MC |
574 | u16 hdr_info; |
575 | bool cleaned = false; | |
9a799d71 | 576 | int cleaned_count = 0; |
d2f4fbe2 | 577 | unsigned int total_rx_bytes = 0, total_rx_packets = 0; |
9a799d71 AK |
578 | |
579 | i = rx_ring->next_to_clean; | |
9a799d71 AK |
580 | rx_desc = IXGBE_RX_DESC_ADV(*rx_ring, i); |
581 | staterr = le32_to_cpu(rx_desc->wb.upper.status_error); | |
582 | rx_buffer_info = &rx_ring->rx_buffer_info[i]; | |
9a799d71 AK |
583 | |
584 | while (staterr & IXGBE_RXD_STAT_DD) { | |
7c6e0a43 | 585 | u32 upper_len = 0; |
9a799d71 AK |
586 | if (*work_done >= work_to_do) |
587 | break; | |
588 | (*work_done)++; | |
589 | ||
590 | if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) { | |
7c6e0a43 JB |
591 | hdr_info = le16_to_cpu(ixgbe_get_hdr_info(rx_desc)); |
592 | len = (hdr_info & IXGBE_RXDADV_HDRBUFLEN_MASK) >> | |
762f4c57 | 593 | IXGBE_RXDADV_HDRBUFLEN_SHIFT; |
9a799d71 AK |
594 | if (hdr_info & IXGBE_RXDADV_SPH) |
595 | adapter->rx_hdr_split++; | |
596 | if (len > IXGBE_RX_HDR_SIZE) | |
597 | len = IXGBE_RX_HDR_SIZE; | |
598 | upper_len = le16_to_cpu(rx_desc->wb.upper.length); | |
7c6e0a43 | 599 | } else { |
9a799d71 | 600 | len = le16_to_cpu(rx_desc->wb.upper.length); |
7c6e0a43 | 601 | } |
9a799d71 AK |
602 | |
603 | cleaned = true; | |
604 | skb = rx_buffer_info->skb; | |
605 | prefetch(skb->data - NET_IP_ALIGN); | |
606 | rx_buffer_info->skb = NULL; | |
607 | ||
608 | if (len && !skb_shinfo(skb)->nr_frags) { | |
609 | pci_unmap_single(pdev, rx_buffer_info->dma, | |
b4617240 PW |
610 | rx_ring->rx_buf_len + NET_IP_ALIGN, |
611 | PCI_DMA_FROMDEVICE); | |
9a799d71 AK |
612 | skb_put(skb, len); |
613 | } | |
614 | ||
615 | if (upper_len) { | |
616 | pci_unmap_page(pdev, rx_buffer_info->page_dma, | |
762f4c57 | 617 | PAGE_SIZE / 2, PCI_DMA_FROMDEVICE); |
9a799d71 AK |
618 | rx_buffer_info->page_dma = 0; |
619 | skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags, | |
762f4c57 JB |
620 | rx_buffer_info->page, |
621 | rx_buffer_info->page_offset, | |
622 | upper_len); | |
623 | ||
624 | if ((rx_ring->rx_buf_len > (PAGE_SIZE / 2)) || | |
625 | (page_count(rx_buffer_info->page) != 1)) | |
626 | rx_buffer_info->page = NULL; | |
627 | else | |
628 | get_page(rx_buffer_info->page); | |
9a799d71 AK |
629 | |
630 | skb->len += upper_len; | |
631 | skb->data_len += upper_len; | |
632 | skb->truesize += upper_len; | |
633 | } | |
634 | ||
635 | i++; | |
636 | if (i == rx_ring->count) | |
637 | i = 0; | |
638 | next_buffer = &rx_ring->rx_buffer_info[i]; | |
639 | ||
640 | next_rxd = IXGBE_RX_DESC_ADV(*rx_ring, i); | |
641 | prefetch(next_rxd); | |
642 | ||
643 | cleaned_count++; | |
644 | if (staterr & IXGBE_RXD_STAT_EOP) { | |
645 | rx_ring->stats.packets++; | |
646 | rx_ring->stats.bytes += skb->len; | |
647 | } else { | |
648 | rx_buffer_info->skb = next_buffer->skb; | |
649 | rx_buffer_info->dma = next_buffer->dma; | |
650 | next_buffer->skb = skb; | |
762f4c57 | 651 | next_buffer->dma = 0; |
9a799d71 AK |
652 | adapter->non_eop_descs++; |
653 | goto next_desc; | |
654 | } | |
655 | ||
656 | if (staterr & IXGBE_RXDADV_ERR_FRAME_ERR_MASK) { | |
657 | dev_kfree_skb_irq(skb); | |
658 | goto next_desc; | |
659 | } | |
660 | ||
661 | ixgbe_rx_checksum(adapter, staterr, skb); | |
d2f4fbe2 AV |
662 | |
663 | /* probably a little skewed due to removing CRC */ | |
664 | total_rx_bytes += skb->len; | |
665 | total_rx_packets++; | |
666 | ||
74ce8dd2 | 667 | skb->protocol = eth_type_trans(skb, adapter->netdev); |
177db6ff | 668 | ixgbe_receive_skb(adapter, skb, staterr, rx_ring, rx_desc); |
74ce8dd2 | 669 | adapter->netdev->last_rx = jiffies; |
9a799d71 AK |
670 | |
671 | next_desc: | |
672 | rx_desc->wb.upper.status_error = 0; | |
673 | ||
674 | /* return some buffers to hardware, one at a time is too slow */ | |
675 | if (cleaned_count >= IXGBE_RX_BUFFER_WRITE) { | |
676 | ixgbe_alloc_rx_buffers(adapter, rx_ring, cleaned_count); | |
677 | cleaned_count = 0; | |
678 | } | |
679 | ||
680 | /* use prefetched values */ | |
681 | rx_desc = next_rxd; | |
682 | rx_buffer_info = next_buffer; | |
683 | ||
684 | staterr = le32_to_cpu(rx_desc->wb.upper.status_error); | |
177db6ff MC |
685 | } |
686 | ||
687 | if (rx_ring->lro_used) { | |
688 | lro_flush_all(&rx_ring->lro_mgr); | |
689 | rx_ring->lro_used = false; | |
9a799d71 AK |
690 | } |
691 | ||
692 | rx_ring->next_to_clean = i; | |
693 | cleaned_count = IXGBE_DESC_UNUSED(rx_ring); | |
694 | ||
695 | if (cleaned_count) | |
696 | ixgbe_alloc_rx_buffers(adapter, rx_ring, cleaned_count); | |
697 | ||
f494e8fa AV |
698 | rx_ring->total_packets += total_rx_packets; |
699 | rx_ring->total_bytes += total_rx_bytes; | |
700 | adapter->net_stats.rx_bytes += total_rx_bytes; | |
701 | adapter->net_stats.rx_packets += total_rx_packets; | |
702 | ||
9a799d71 AK |
703 | return cleaned; |
704 | } | |
705 | ||
021230d4 | 706 | static int ixgbe_clean_rxonly(struct napi_struct *, int); |
9a799d71 AK |
707 | /** |
708 | * ixgbe_configure_msix - Configure MSI-X hardware | |
709 | * @adapter: board private structure | |
710 | * | |
711 | * ixgbe_configure_msix sets up the hardware to properly generate MSI-X | |
712 | * interrupts. | |
713 | **/ | |
714 | static void ixgbe_configure_msix(struct ixgbe_adapter *adapter) | |
715 | { | |
021230d4 AV |
716 | struct ixgbe_q_vector *q_vector; |
717 | int i, j, q_vectors, v_idx, r_idx; | |
718 | u32 mask; | |
9a799d71 | 719 | |
021230d4 | 720 | q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS; |
9a799d71 | 721 | |
021230d4 AV |
722 | /* Populate the IVAR table and set the ITR values to the |
723 | * corresponding register. | |
724 | */ | |
725 | for (v_idx = 0; v_idx < q_vectors; v_idx++) { | |
726 | q_vector = &adapter->q_vector[v_idx]; | |
727 | /* XXX for_each_bit(...) */ | |
728 | r_idx = find_first_bit(q_vector->rxr_idx, | |
b4617240 | 729 | adapter->num_rx_queues); |
021230d4 AV |
730 | |
731 | for (i = 0; i < q_vector->rxr_count; i++) { | |
732 | j = adapter->rx_ring[r_idx].reg_idx; | |
733 | ixgbe_set_ivar(adapter, IXGBE_IVAR_RX_QUEUE(j), v_idx); | |
734 | r_idx = find_next_bit(q_vector->rxr_idx, | |
b4617240 PW |
735 | adapter->num_rx_queues, |
736 | r_idx + 1); | |
021230d4 AV |
737 | } |
738 | r_idx = find_first_bit(q_vector->txr_idx, | |
b4617240 | 739 | adapter->num_tx_queues); |
021230d4 AV |
740 | |
741 | for (i = 0; i < q_vector->txr_count; i++) { | |
742 | j = adapter->tx_ring[r_idx].reg_idx; | |
743 | ixgbe_set_ivar(adapter, IXGBE_IVAR_TX_QUEUE(j), v_idx); | |
744 | r_idx = find_next_bit(q_vector->txr_idx, | |
b4617240 PW |
745 | adapter->num_tx_queues, |
746 | r_idx + 1); | |
021230d4 AV |
747 | } |
748 | ||
30efa5a3 | 749 | /* if this is a tx only vector halve the interrupt rate */ |
021230d4 | 750 | if (q_vector->txr_count && !q_vector->rxr_count) |
30efa5a3 | 751 | q_vector->eitr = (adapter->eitr_param >> 1); |
021230d4 | 752 | else |
30efa5a3 JB |
753 | /* rx only */ |
754 | q_vector->eitr = adapter->eitr_param; | |
021230d4 AV |
755 | |
756 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITR(v_idx), | |
b4617240 | 757 | EITR_INTS_PER_SEC_TO_REG(q_vector->eitr)); |
9a799d71 AK |
758 | } |
759 | ||
021230d4 AV |
760 | ixgbe_set_ivar(adapter, IXGBE_IVAR_OTHER_CAUSES_INDEX, v_idx); |
761 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITR(v_idx), 1950); | |
762 | ||
41fb9248 | 763 | /* set up to autoclear timer, and the vectors */ |
021230d4 | 764 | mask = IXGBE_EIMS_ENABLE_MASK; |
41fb9248 | 765 | mask &= ~(IXGBE_EIMS_OTHER | IXGBE_EIMS_LSC); |
021230d4 | 766 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIAC, mask); |
9a799d71 AK |
767 | } |
768 | ||
f494e8fa AV |
769 | enum latency_range { |
770 | lowest_latency = 0, | |
771 | low_latency = 1, | |
772 | bulk_latency = 2, | |
773 | latency_invalid = 255 | |
774 | }; | |
775 | ||
776 | /** | |
777 | * ixgbe_update_itr - update the dynamic ITR value based on statistics | |
778 | * @adapter: pointer to adapter | |
779 | * @eitr: eitr setting (ints per sec) to give last timeslice | |
780 | * @itr_setting: current throttle rate in ints/second | |
781 | * @packets: the number of packets during this measurement interval | |
782 | * @bytes: the number of bytes during this measurement interval | |
783 | * | |
784 | * Stores a new ITR value based on packets and byte | |
785 | * counts during the last interrupt. The advantage of per interrupt | |
786 | * computation is faster updates and more accurate ITR for the current | |
787 | * traffic pattern. Constants in this function were computed | |
788 | * based on theoretical maximum wire speed and thresholds were set based | |
789 | * on testing data as well as attempting to minimize response time | |
790 | * while increasing bulk throughput. | |
791 | * this functionality is controlled by the InterruptThrottleRate module | |
792 | * parameter (see ixgbe_param.c) | |
793 | **/ | |
794 | static u8 ixgbe_update_itr(struct ixgbe_adapter *adapter, | |
b4617240 PW |
795 | u32 eitr, u8 itr_setting, |
796 | int packets, int bytes) | |
f494e8fa AV |
797 | { |
798 | unsigned int retval = itr_setting; | |
799 | u32 timepassed_us; | |
800 | u64 bytes_perint; | |
801 | ||
802 | if (packets == 0) | |
803 | goto update_itr_done; | |
804 | ||
805 | ||
806 | /* simple throttlerate management | |
807 | * 0-20MB/s lowest (100000 ints/s) | |
808 | * 20-100MB/s low (20000 ints/s) | |
809 | * 100-1249MB/s bulk (8000 ints/s) | |
810 | */ | |
811 | /* what was last interrupt timeslice? */ | |
812 | timepassed_us = 1000000/eitr; | |
813 | bytes_perint = bytes / timepassed_us; /* bytes/usec */ | |
814 | ||
815 | switch (itr_setting) { | |
816 | case lowest_latency: | |
817 | if (bytes_perint > adapter->eitr_low) | |
818 | retval = low_latency; | |
819 | break; | |
820 | case low_latency: | |
821 | if (bytes_perint > adapter->eitr_high) | |
822 | retval = bulk_latency; | |
823 | else if (bytes_perint <= adapter->eitr_low) | |
824 | retval = lowest_latency; | |
825 | break; | |
826 | case bulk_latency: | |
827 | if (bytes_perint <= adapter->eitr_high) | |
828 | retval = low_latency; | |
829 | break; | |
830 | } | |
831 | ||
832 | update_itr_done: | |
833 | return retval; | |
834 | } | |
835 | ||
836 | static void ixgbe_set_itr_msix(struct ixgbe_q_vector *q_vector) | |
837 | { | |
838 | struct ixgbe_adapter *adapter = q_vector->adapter; | |
839 | struct ixgbe_hw *hw = &adapter->hw; | |
840 | u32 new_itr; | |
841 | u8 current_itr, ret_itr; | |
842 | int i, r_idx, v_idx = ((void *)q_vector - (void *)(adapter->q_vector)) / | |
b4617240 | 843 | sizeof(struct ixgbe_q_vector); |
f494e8fa AV |
844 | struct ixgbe_ring *rx_ring, *tx_ring; |
845 | ||
846 | r_idx = find_first_bit(q_vector->txr_idx, adapter->num_tx_queues); | |
847 | for (i = 0; i < q_vector->txr_count; i++) { | |
848 | tx_ring = &(adapter->tx_ring[r_idx]); | |
849 | ret_itr = ixgbe_update_itr(adapter, q_vector->eitr, | |
b4617240 PW |
850 | q_vector->tx_itr, |
851 | tx_ring->total_packets, | |
852 | tx_ring->total_bytes); | |
f494e8fa AV |
853 | /* if the result for this queue would decrease interrupt |
854 | * rate for this vector then use that result */ | |
30efa5a3 | 855 | q_vector->tx_itr = ((q_vector->tx_itr > ret_itr) ? |
b4617240 | 856 | q_vector->tx_itr - 1 : ret_itr); |
f494e8fa | 857 | r_idx = find_next_bit(q_vector->txr_idx, adapter->num_tx_queues, |
b4617240 | 858 | r_idx + 1); |
f494e8fa AV |
859 | } |
860 | ||
861 | r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues); | |
862 | for (i = 0; i < q_vector->rxr_count; i++) { | |
863 | rx_ring = &(adapter->rx_ring[r_idx]); | |
864 | ret_itr = ixgbe_update_itr(adapter, q_vector->eitr, | |
b4617240 PW |
865 | q_vector->rx_itr, |
866 | rx_ring->total_packets, | |
867 | rx_ring->total_bytes); | |
f494e8fa AV |
868 | /* if the result for this queue would decrease interrupt |
869 | * rate for this vector then use that result */ | |
30efa5a3 | 870 | q_vector->rx_itr = ((q_vector->rx_itr > ret_itr) ? |
b4617240 | 871 | q_vector->rx_itr - 1 : ret_itr); |
f494e8fa | 872 | r_idx = find_next_bit(q_vector->rxr_idx, adapter->num_rx_queues, |
b4617240 | 873 | r_idx + 1); |
f494e8fa AV |
874 | } |
875 | ||
30efa5a3 | 876 | current_itr = max(q_vector->rx_itr, q_vector->tx_itr); |
f494e8fa AV |
877 | |
878 | switch (current_itr) { | |
879 | /* counts and packets in update_itr are dependent on these numbers */ | |
880 | case lowest_latency: | |
881 | new_itr = 100000; | |
882 | break; | |
883 | case low_latency: | |
884 | new_itr = 20000; /* aka hwitr = ~200 */ | |
885 | break; | |
886 | case bulk_latency: | |
887 | default: | |
888 | new_itr = 8000; | |
889 | break; | |
890 | } | |
891 | ||
892 | if (new_itr != q_vector->eitr) { | |
893 | u32 itr_reg; | |
894 | /* do an exponential smoothing */ | |
895 | new_itr = ((q_vector->eitr * 90)/100) + ((new_itr * 10)/100); | |
896 | q_vector->eitr = new_itr; | |
897 | itr_reg = EITR_INTS_PER_SEC_TO_REG(new_itr); | |
898 | /* must write high and low 16 bits to reset counter */ | |
899 | DPRINTK(TX_ERR, DEBUG, "writing eitr(%d): %08X\n", v_idx, | |
b4617240 | 900 | itr_reg); |
f494e8fa AV |
901 | IXGBE_WRITE_REG(hw, IXGBE_EITR(v_idx), itr_reg | (itr_reg)<<16); |
902 | } | |
903 | ||
904 | return; | |
905 | } | |
906 | ||
cf8280ee JB |
907 | |
908 | static void ixgbe_check_lsc(struct ixgbe_adapter *adapter) | |
909 | { | |
910 | struct ixgbe_hw *hw = &adapter->hw; | |
911 | ||
912 | adapter->lsc_int++; | |
913 | adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE; | |
914 | adapter->link_check_timeout = jiffies; | |
915 | if (!test_bit(__IXGBE_DOWN, &adapter->state)) { | |
916 | IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_EIMC_LSC); | |
917 | schedule_work(&adapter->watchdog_task); | |
918 | } | |
919 | } | |
920 | ||
9a799d71 AK |
921 | static irqreturn_t ixgbe_msix_lsc(int irq, void *data) |
922 | { | |
923 | struct net_device *netdev = data; | |
924 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
925 | struct ixgbe_hw *hw = &adapter->hw; | |
926 | u32 eicr = IXGBE_READ_REG(hw, IXGBE_EICR); | |
927 | ||
cf8280ee JB |
928 | if (eicr & IXGBE_EICR_LSC) |
929 | ixgbe_check_lsc(adapter); | |
d4f80882 AV |
930 | |
931 | if (!test_bit(__IXGBE_DOWN, &adapter->state)) | |
932 | IXGBE_WRITE_REG(hw, IXGBE_EIMS, IXGBE_EIMS_OTHER); | |
9a799d71 AK |
933 | |
934 | return IRQ_HANDLED; | |
935 | } | |
936 | ||
937 | static irqreturn_t ixgbe_msix_clean_tx(int irq, void *data) | |
938 | { | |
021230d4 AV |
939 | struct ixgbe_q_vector *q_vector = data; |
940 | struct ixgbe_adapter *adapter = q_vector->adapter; | |
3a581073 | 941 | struct ixgbe_ring *tx_ring; |
021230d4 AV |
942 | int i, r_idx; |
943 | ||
944 | if (!q_vector->txr_count) | |
945 | return IRQ_HANDLED; | |
946 | ||
947 | r_idx = find_first_bit(q_vector->txr_idx, adapter->num_tx_queues); | |
948 | for (i = 0; i < q_vector->txr_count; i++) { | |
3a581073 | 949 | tx_ring = &(adapter->tx_ring[r_idx]); |
5dd2d332 | 950 | #ifdef CONFIG_IXGBE_DCA |
bd0362dd | 951 | if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) |
3a581073 | 952 | ixgbe_update_tx_dca(adapter, tx_ring); |
bd0362dd | 953 | #endif |
3a581073 JB |
954 | tx_ring->total_bytes = 0; |
955 | tx_ring->total_packets = 0; | |
956 | ixgbe_clean_tx_irq(adapter, tx_ring); | |
021230d4 | 957 | r_idx = find_next_bit(q_vector->txr_idx, adapter->num_tx_queues, |
b4617240 | 958 | r_idx + 1); |
021230d4 | 959 | } |
9a799d71 | 960 | |
9a799d71 AK |
961 | return IRQ_HANDLED; |
962 | } | |
963 | ||
021230d4 AV |
964 | /** |
965 | * ixgbe_msix_clean_rx - single unshared vector rx clean (all queues) | |
966 | * @irq: unused | |
967 | * @data: pointer to our q_vector struct for this interrupt vector | |
968 | **/ | |
9a799d71 AK |
969 | static irqreturn_t ixgbe_msix_clean_rx(int irq, void *data) |
970 | { | |
021230d4 AV |
971 | struct ixgbe_q_vector *q_vector = data; |
972 | struct ixgbe_adapter *adapter = q_vector->adapter; | |
3a581073 | 973 | struct ixgbe_ring *rx_ring; |
021230d4 | 974 | int r_idx; |
30efa5a3 | 975 | int i; |
021230d4 AV |
976 | |
977 | r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues); | |
30efa5a3 JB |
978 | for (i = 0; i < q_vector->rxr_count; i++) { |
979 | rx_ring = &(adapter->rx_ring[r_idx]); | |
980 | rx_ring->total_bytes = 0; | |
981 | rx_ring->total_packets = 0; | |
982 | r_idx = find_next_bit(q_vector->rxr_idx, adapter->num_rx_queues, | |
983 | r_idx + 1); | |
984 | } | |
985 | ||
021230d4 AV |
986 | if (!q_vector->rxr_count) |
987 | return IRQ_HANDLED; | |
988 | ||
30efa5a3 | 989 | r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues); |
3a581073 | 990 | rx_ring = &(adapter->rx_ring[r_idx]); |
021230d4 | 991 | /* disable interrupts on this vector only */ |
3a581073 | 992 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, rx_ring->v_idx); |
021230d4 AV |
993 | netif_rx_schedule(adapter->netdev, &q_vector->napi); |
994 | ||
995 | return IRQ_HANDLED; | |
996 | } | |
997 | ||
998 | static irqreturn_t ixgbe_msix_clean_many(int irq, void *data) | |
999 | { | |
1000 | ixgbe_msix_clean_rx(irq, data); | |
1001 | ixgbe_msix_clean_tx(irq, data); | |
9a799d71 | 1002 | |
9a799d71 AK |
1003 | return IRQ_HANDLED; |
1004 | } | |
1005 | ||
021230d4 AV |
1006 | /** |
1007 | * ixgbe_clean_rxonly - msix (aka one shot) rx clean routine | |
1008 | * @napi: napi struct with our devices info in it | |
1009 | * @budget: amount of work driver is allowed to do this pass, in packets | |
1010 | * | |
f0848276 JB |
1011 | * This function is optimized for cleaning one queue only on a single |
1012 | * q_vector!!! | |
021230d4 | 1013 | **/ |
9a799d71 AK |
1014 | static int ixgbe_clean_rxonly(struct napi_struct *napi, int budget) |
1015 | { | |
021230d4 | 1016 | struct ixgbe_q_vector *q_vector = |
b4617240 | 1017 | container_of(napi, struct ixgbe_q_vector, napi); |
021230d4 | 1018 | struct ixgbe_adapter *adapter = q_vector->adapter; |
f0848276 | 1019 | struct ixgbe_ring *rx_ring = NULL; |
9a799d71 | 1020 | int work_done = 0; |
021230d4 | 1021 | long r_idx; |
9a799d71 | 1022 | |
021230d4 | 1023 | r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues); |
3a581073 | 1024 | rx_ring = &(adapter->rx_ring[r_idx]); |
5dd2d332 | 1025 | #ifdef CONFIG_IXGBE_DCA |
bd0362dd | 1026 | if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) |
3a581073 | 1027 | ixgbe_update_rx_dca(adapter, rx_ring); |
bd0362dd | 1028 | #endif |
9a799d71 | 1029 | |
3a581073 | 1030 | ixgbe_clean_rx_irq(adapter, rx_ring, &work_done, budget); |
9a799d71 | 1031 | |
021230d4 AV |
1032 | /* If all Rx work done, exit the polling mode */ |
1033 | if (work_done < budget) { | |
1034 | netif_rx_complete(adapter->netdev, napi); | |
30efa5a3 | 1035 | if (adapter->itr_setting & 3) |
f494e8fa | 1036 | ixgbe_set_itr_msix(q_vector); |
9a799d71 | 1037 | if (!test_bit(__IXGBE_DOWN, &adapter->state)) |
3a581073 | 1038 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS, rx_ring->v_idx); |
9a799d71 AK |
1039 | } |
1040 | ||
1041 | return work_done; | |
1042 | } | |
1043 | ||
f0848276 JB |
1044 | /** |
1045 | * ixgbe_clean_rxonly_many - msix (aka one shot) rx clean routine | |
1046 | * @napi: napi struct with our devices info in it | |
1047 | * @budget: amount of work driver is allowed to do this pass, in packets | |
1048 | * | |
1049 | * This function will clean more than one rx queue associated with a | |
1050 | * q_vector. | |
1051 | **/ | |
1052 | static int ixgbe_clean_rxonly_many(struct napi_struct *napi, int budget) | |
1053 | { | |
1054 | struct ixgbe_q_vector *q_vector = | |
1055 | container_of(napi, struct ixgbe_q_vector, napi); | |
1056 | struct ixgbe_adapter *adapter = q_vector->adapter; | |
f0848276 JB |
1057 | struct ixgbe_ring *rx_ring = NULL; |
1058 | int work_done = 0, i; | |
1059 | long r_idx; | |
1060 | u16 enable_mask = 0; | |
1061 | ||
1062 | /* attempt to distribute budget to each queue fairly, but don't allow | |
1063 | * the budget to go below 1 because we'll exit polling */ | |
1064 | budget /= (q_vector->rxr_count ?: 1); | |
1065 | budget = max(budget, 1); | |
1066 | r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues); | |
1067 | for (i = 0; i < q_vector->rxr_count; i++) { | |
1068 | rx_ring = &(adapter->rx_ring[r_idx]); | |
5dd2d332 | 1069 | #ifdef CONFIG_IXGBE_DCA |
f0848276 JB |
1070 | if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) |
1071 | ixgbe_update_rx_dca(adapter, rx_ring); | |
1072 | #endif | |
1073 | ixgbe_clean_rx_irq(adapter, rx_ring, &work_done, budget); | |
1074 | enable_mask |= rx_ring->v_idx; | |
1075 | r_idx = find_next_bit(q_vector->rxr_idx, adapter->num_rx_queues, | |
1076 | r_idx + 1); | |
1077 | } | |
1078 | ||
1079 | r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues); | |
1080 | rx_ring = &(adapter->rx_ring[r_idx]); | |
1081 | /* If all Rx work done, exit the polling mode */ | |
7f821875 | 1082 | if (work_done < budget) { |
74ce8dd2 | 1083 | netif_rx_complete(adapter->netdev, napi); |
f0848276 JB |
1084 | if (adapter->itr_setting & 3) |
1085 | ixgbe_set_itr_msix(q_vector); | |
1086 | if (!test_bit(__IXGBE_DOWN, &adapter->state)) | |
1087 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS, enable_mask); | |
1088 | return 0; | |
1089 | } | |
1090 | ||
1091 | return work_done; | |
1092 | } | |
021230d4 | 1093 | static inline void map_vector_to_rxq(struct ixgbe_adapter *a, int v_idx, |
b4617240 | 1094 | int r_idx) |
021230d4 AV |
1095 | { |
1096 | a->q_vector[v_idx].adapter = a; | |
1097 | set_bit(r_idx, a->q_vector[v_idx].rxr_idx); | |
1098 | a->q_vector[v_idx].rxr_count++; | |
1099 | a->rx_ring[r_idx].v_idx = 1 << v_idx; | |
1100 | } | |
1101 | ||
1102 | static inline void map_vector_to_txq(struct ixgbe_adapter *a, int v_idx, | |
b4617240 | 1103 | int r_idx) |
021230d4 AV |
1104 | { |
1105 | a->q_vector[v_idx].adapter = a; | |
1106 | set_bit(r_idx, a->q_vector[v_idx].txr_idx); | |
1107 | a->q_vector[v_idx].txr_count++; | |
1108 | a->tx_ring[r_idx].v_idx = 1 << v_idx; | |
1109 | } | |
1110 | ||
9a799d71 | 1111 | /** |
021230d4 AV |
1112 | * ixgbe_map_rings_to_vectors - Maps descriptor rings to vectors |
1113 | * @adapter: board private structure to initialize | |
1114 | * @vectors: allotted vector count for descriptor rings | |
9a799d71 | 1115 | * |
021230d4 AV |
1116 | * This function maps descriptor rings to the queue-specific vectors |
1117 | * we were allotted through the MSI-X enabling code. Ideally, we'd have | |
1118 | * one vector per ring/queue, but on a constrained vector budget, we | |
1119 | * group the rings as "efficiently" as possible. You would add new | |
1120 | * mapping configurations in here. | |
9a799d71 | 1121 | **/ |
021230d4 | 1122 | static int ixgbe_map_rings_to_vectors(struct ixgbe_adapter *adapter, |
b4617240 | 1123 | int vectors) |
021230d4 AV |
1124 | { |
1125 | int v_start = 0; | |
1126 | int rxr_idx = 0, txr_idx = 0; | |
1127 | int rxr_remaining = adapter->num_rx_queues; | |
1128 | int txr_remaining = adapter->num_tx_queues; | |
1129 | int i, j; | |
1130 | int rqpv, tqpv; | |
1131 | int err = 0; | |
1132 | ||
1133 | /* No mapping required if MSI-X is disabled. */ | |
1134 | if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED)) | |
1135 | goto out; | |
9a799d71 | 1136 | |
021230d4 AV |
1137 | /* |
1138 | * The ideal configuration... | |
1139 | * We have enough vectors to map one per queue. | |
1140 | */ | |
1141 | if (vectors == adapter->num_rx_queues + adapter->num_tx_queues) { | |
1142 | for (; rxr_idx < rxr_remaining; v_start++, rxr_idx++) | |
1143 | map_vector_to_rxq(adapter, v_start, rxr_idx); | |
9a799d71 | 1144 | |
021230d4 AV |
1145 | for (; txr_idx < txr_remaining; v_start++, txr_idx++) |
1146 | map_vector_to_txq(adapter, v_start, txr_idx); | |
9a799d71 | 1147 | |
9a799d71 | 1148 | goto out; |
021230d4 | 1149 | } |
9a799d71 | 1150 | |
021230d4 AV |
1151 | /* |
1152 | * If we don't have enough vectors for a 1-to-1 | |
1153 | * mapping, we'll have to group them so there are | |
1154 | * multiple queues per vector. | |
1155 | */ | |
1156 | /* Re-adjusting *qpv takes care of the remainder. */ | |
1157 | for (i = v_start; i < vectors; i++) { | |
1158 | rqpv = DIV_ROUND_UP(rxr_remaining, vectors - i); | |
1159 | for (j = 0; j < rqpv; j++) { | |
1160 | map_vector_to_rxq(adapter, i, rxr_idx); | |
1161 | rxr_idx++; | |
1162 | rxr_remaining--; | |
1163 | } | |
1164 | } | |
1165 | for (i = v_start; i < vectors; i++) { | |
1166 | tqpv = DIV_ROUND_UP(txr_remaining, vectors - i); | |
1167 | for (j = 0; j < tqpv; j++) { | |
1168 | map_vector_to_txq(adapter, i, txr_idx); | |
1169 | txr_idx++; | |
1170 | txr_remaining--; | |
9a799d71 | 1171 | } |
9a799d71 AK |
1172 | } |
1173 | ||
021230d4 AV |
1174 | out: |
1175 | return err; | |
1176 | } | |
1177 | ||
1178 | /** | |
1179 | * ixgbe_request_msix_irqs - Initialize MSI-X interrupts | |
1180 | * @adapter: board private structure | |
1181 | * | |
1182 | * ixgbe_request_msix_irqs allocates MSI-X vectors and requests | |
1183 | * interrupts from the kernel. | |
1184 | **/ | |
1185 | static int ixgbe_request_msix_irqs(struct ixgbe_adapter *adapter) | |
1186 | { | |
1187 | struct net_device *netdev = adapter->netdev; | |
1188 | irqreturn_t (*handler)(int, void *); | |
1189 | int i, vector, q_vectors, err; | |
1190 | ||
1191 | /* Decrement for Other and TCP Timer vectors */ | |
1192 | q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS; | |
1193 | ||
1194 | /* Map the Tx/Rx rings to the vectors we were allotted. */ | |
1195 | err = ixgbe_map_rings_to_vectors(adapter, q_vectors); | |
1196 | if (err) | |
1197 | goto out; | |
1198 | ||
1199 | #define SET_HANDLER(_v) ((!(_v)->rxr_count) ? &ixgbe_msix_clean_tx : \ | |
b4617240 PW |
1200 | (!(_v)->txr_count) ? &ixgbe_msix_clean_rx : \ |
1201 | &ixgbe_msix_clean_many) | |
021230d4 AV |
1202 | for (vector = 0; vector < q_vectors; vector++) { |
1203 | handler = SET_HANDLER(&adapter->q_vector[vector]); | |
1204 | sprintf(adapter->name[vector], "%s:v%d-%s", | |
b4617240 PW |
1205 | netdev->name, vector, |
1206 | (handler == &ixgbe_msix_clean_rx) ? "Rx" : | |
1207 | ((handler == &ixgbe_msix_clean_tx) ? "Tx" : "TxRx")); | |
021230d4 | 1208 | err = request_irq(adapter->msix_entries[vector].vector, |
b4617240 PW |
1209 | handler, 0, adapter->name[vector], |
1210 | &(adapter->q_vector[vector])); | |
9a799d71 AK |
1211 | if (err) { |
1212 | DPRINTK(PROBE, ERR, | |
b4617240 PW |
1213 | "request_irq failed for MSIX interrupt " |
1214 | "Error: %d\n", err); | |
021230d4 | 1215 | goto free_queue_irqs; |
9a799d71 | 1216 | } |
9a799d71 AK |
1217 | } |
1218 | ||
021230d4 AV |
1219 | sprintf(adapter->name[vector], "%s:lsc", netdev->name); |
1220 | err = request_irq(adapter->msix_entries[vector].vector, | |
b4617240 | 1221 | &ixgbe_msix_lsc, 0, adapter->name[vector], netdev); |
9a799d71 AK |
1222 | if (err) { |
1223 | DPRINTK(PROBE, ERR, | |
1224 | "request_irq for msix_lsc failed: %d\n", err); | |
021230d4 | 1225 | goto free_queue_irqs; |
9a799d71 AK |
1226 | } |
1227 | ||
9a799d71 AK |
1228 | return 0; |
1229 | ||
021230d4 AV |
1230 | free_queue_irqs: |
1231 | for (i = vector - 1; i >= 0; i--) | |
1232 | free_irq(adapter->msix_entries[--vector].vector, | |
b4617240 | 1233 | &(adapter->q_vector[i])); |
021230d4 AV |
1234 | adapter->flags &= ~IXGBE_FLAG_MSIX_ENABLED; |
1235 | pci_disable_msix(adapter->pdev); | |
9a799d71 AK |
1236 | kfree(adapter->msix_entries); |
1237 | adapter->msix_entries = NULL; | |
021230d4 | 1238 | out: |
9a799d71 AK |
1239 | return err; |
1240 | } | |
1241 | ||
f494e8fa AV |
1242 | static void ixgbe_set_itr(struct ixgbe_adapter *adapter) |
1243 | { | |
1244 | struct ixgbe_hw *hw = &adapter->hw; | |
1245 | struct ixgbe_q_vector *q_vector = adapter->q_vector; | |
1246 | u8 current_itr; | |
1247 | u32 new_itr = q_vector->eitr; | |
1248 | struct ixgbe_ring *rx_ring = &adapter->rx_ring[0]; | |
1249 | struct ixgbe_ring *tx_ring = &adapter->tx_ring[0]; | |
1250 | ||
30efa5a3 | 1251 | q_vector->tx_itr = ixgbe_update_itr(adapter, new_itr, |
b4617240 PW |
1252 | q_vector->tx_itr, |
1253 | tx_ring->total_packets, | |
1254 | tx_ring->total_bytes); | |
30efa5a3 | 1255 | q_vector->rx_itr = ixgbe_update_itr(adapter, new_itr, |
b4617240 PW |
1256 | q_vector->rx_itr, |
1257 | rx_ring->total_packets, | |
1258 | rx_ring->total_bytes); | |
f494e8fa | 1259 | |
30efa5a3 | 1260 | current_itr = max(q_vector->rx_itr, q_vector->tx_itr); |
f494e8fa AV |
1261 | |
1262 | switch (current_itr) { | |
1263 | /* counts and packets in update_itr are dependent on these numbers */ | |
1264 | case lowest_latency: | |
1265 | new_itr = 100000; | |
1266 | break; | |
1267 | case low_latency: | |
1268 | new_itr = 20000; /* aka hwitr = ~200 */ | |
1269 | break; | |
1270 | case bulk_latency: | |
1271 | new_itr = 8000; | |
1272 | break; | |
1273 | default: | |
1274 | break; | |
1275 | } | |
1276 | ||
1277 | if (new_itr != q_vector->eitr) { | |
1278 | u32 itr_reg; | |
1279 | /* do an exponential smoothing */ | |
1280 | new_itr = ((q_vector->eitr * 90)/100) + ((new_itr * 10)/100); | |
1281 | q_vector->eitr = new_itr; | |
1282 | itr_reg = EITR_INTS_PER_SEC_TO_REG(new_itr); | |
1283 | /* must write high and low 16 bits to reset counter */ | |
1284 | IXGBE_WRITE_REG(hw, IXGBE_EITR(0), itr_reg | (itr_reg)<<16); | |
1285 | } | |
1286 | ||
1287 | return; | |
1288 | } | |
1289 | ||
021230d4 AV |
1290 | static inline void ixgbe_irq_enable(struct ixgbe_adapter *adapter); |
1291 | ||
9a799d71 | 1292 | /** |
021230d4 | 1293 | * ixgbe_intr - legacy mode Interrupt Handler |
9a799d71 AK |
1294 | * @irq: interrupt number |
1295 | * @data: pointer to a network interface device structure | |
1296 | * @pt_regs: CPU registers structure | |
1297 | **/ | |
1298 | static irqreturn_t ixgbe_intr(int irq, void *data) | |
1299 | { | |
1300 | struct net_device *netdev = data; | |
1301 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
1302 | struct ixgbe_hw *hw = &adapter->hw; | |
1303 | u32 eicr; | |
1304 | ||
021230d4 AV |
1305 | /* for NAPI, using EIAM to auto-mask tx/rx interrupt bits on read |
1306 | * therefore no explict interrupt disable is necessary */ | |
1307 | eicr = IXGBE_READ_REG(hw, IXGBE_EICR); | |
f47cf66e JB |
1308 | if (!eicr) { |
1309 | /* shared interrupt alert! | |
1310 | * make sure interrupts are enabled because the read will | |
1311 | * have disabled interrupts due to EIAM */ | |
1312 | ixgbe_irq_enable(adapter); | |
9a799d71 | 1313 | return IRQ_NONE; /* Not our interrupt */ |
f47cf66e | 1314 | } |
9a799d71 | 1315 | |
cf8280ee JB |
1316 | if (eicr & IXGBE_EICR_LSC) |
1317 | ixgbe_check_lsc(adapter); | |
021230d4 AV |
1318 | |
1319 | if (netif_rx_schedule_prep(netdev, &adapter->q_vector[0].napi)) { | |
f494e8fa AV |
1320 | adapter->tx_ring[0].total_packets = 0; |
1321 | adapter->tx_ring[0].total_bytes = 0; | |
1322 | adapter->rx_ring[0].total_packets = 0; | |
1323 | adapter->rx_ring[0].total_bytes = 0; | |
021230d4 AV |
1324 | /* would disable interrupts here but EIAM disabled it */ |
1325 | __netif_rx_schedule(netdev, &adapter->q_vector[0].napi); | |
9a799d71 AK |
1326 | } |
1327 | ||
1328 | return IRQ_HANDLED; | |
1329 | } | |
1330 | ||
021230d4 AV |
1331 | static inline void ixgbe_reset_q_vectors(struct ixgbe_adapter *adapter) |
1332 | { | |
1333 | int i, q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS; | |
1334 | ||
1335 | for (i = 0; i < q_vectors; i++) { | |
1336 | struct ixgbe_q_vector *q_vector = &adapter->q_vector[i]; | |
1337 | bitmap_zero(q_vector->rxr_idx, MAX_RX_QUEUES); | |
1338 | bitmap_zero(q_vector->txr_idx, MAX_TX_QUEUES); | |
1339 | q_vector->rxr_count = 0; | |
1340 | q_vector->txr_count = 0; | |
1341 | } | |
1342 | } | |
1343 | ||
9a799d71 AK |
1344 | /** |
1345 | * ixgbe_request_irq - initialize interrupts | |
1346 | * @adapter: board private structure | |
1347 | * | |
1348 | * Attempts to configure interrupts using the best available | |
1349 | * capabilities of the hardware and kernel. | |
1350 | **/ | |
021230d4 | 1351 | static int ixgbe_request_irq(struct ixgbe_adapter *adapter) |
9a799d71 AK |
1352 | { |
1353 | struct net_device *netdev = adapter->netdev; | |
021230d4 | 1354 | int err; |
9a799d71 | 1355 | |
021230d4 AV |
1356 | if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) { |
1357 | err = ixgbe_request_msix_irqs(adapter); | |
1358 | } else if (adapter->flags & IXGBE_FLAG_MSI_ENABLED) { | |
1359 | err = request_irq(adapter->pdev->irq, &ixgbe_intr, 0, | |
b4617240 | 1360 | netdev->name, netdev); |
021230d4 AV |
1361 | } else { |
1362 | err = request_irq(adapter->pdev->irq, &ixgbe_intr, IRQF_SHARED, | |
b4617240 | 1363 | netdev->name, netdev); |
9a799d71 AK |
1364 | } |
1365 | ||
9a799d71 AK |
1366 | if (err) |
1367 | DPRINTK(PROBE, ERR, "request_irq failed, Error %d\n", err); | |
1368 | ||
9a799d71 AK |
1369 | return err; |
1370 | } | |
1371 | ||
1372 | static void ixgbe_free_irq(struct ixgbe_adapter *adapter) | |
1373 | { | |
1374 | struct net_device *netdev = adapter->netdev; | |
1375 | ||
1376 | if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) { | |
021230d4 | 1377 | int i, q_vectors; |
9a799d71 | 1378 | |
021230d4 AV |
1379 | q_vectors = adapter->num_msix_vectors; |
1380 | ||
1381 | i = q_vectors - 1; | |
9a799d71 | 1382 | free_irq(adapter->msix_entries[i].vector, netdev); |
9a799d71 | 1383 | |
021230d4 AV |
1384 | i--; |
1385 | for (; i >= 0; i--) { | |
1386 | free_irq(adapter->msix_entries[i].vector, | |
b4617240 | 1387 | &(adapter->q_vector[i])); |
021230d4 AV |
1388 | } |
1389 | ||
1390 | ixgbe_reset_q_vectors(adapter); | |
1391 | } else { | |
1392 | free_irq(adapter->pdev->irq, netdev); | |
9a799d71 AK |
1393 | } |
1394 | } | |
1395 | ||
1396 | /** | |
1397 | * ixgbe_irq_disable - Mask off interrupt generation on the NIC | |
1398 | * @adapter: board private structure | |
1399 | **/ | |
1400 | static inline void ixgbe_irq_disable(struct ixgbe_adapter *adapter) | |
1401 | { | |
9a799d71 AK |
1402 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, ~0); |
1403 | IXGBE_WRITE_FLUSH(&adapter->hw); | |
021230d4 AV |
1404 | if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) { |
1405 | int i; | |
1406 | for (i = 0; i < adapter->num_msix_vectors; i++) | |
1407 | synchronize_irq(adapter->msix_entries[i].vector); | |
1408 | } else { | |
1409 | synchronize_irq(adapter->pdev->irq); | |
1410 | } | |
9a799d71 AK |
1411 | } |
1412 | ||
1413 | /** | |
1414 | * ixgbe_irq_enable - Enable default interrupt generation settings | |
1415 | * @adapter: board private structure | |
1416 | **/ | |
1417 | static inline void ixgbe_irq_enable(struct ixgbe_adapter *adapter) | |
1418 | { | |
021230d4 AV |
1419 | u32 mask; |
1420 | mask = IXGBE_EIMS_ENABLE_MASK; | |
1421 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS, mask); | |
d4f80882 | 1422 | IXGBE_WRITE_FLUSH(&adapter->hw); |
9a799d71 AK |
1423 | } |
1424 | ||
1425 | /** | |
1426 | * ixgbe_configure_msi_and_legacy - Initialize PIN (INTA...) and MSI interrupts | |
1427 | * | |
1428 | **/ | |
1429 | static void ixgbe_configure_msi_and_legacy(struct ixgbe_adapter *adapter) | |
1430 | { | |
9a799d71 AK |
1431 | struct ixgbe_hw *hw = &adapter->hw; |
1432 | ||
021230d4 | 1433 | IXGBE_WRITE_REG(hw, IXGBE_EITR(0), |
30efa5a3 | 1434 | EITR_INTS_PER_SEC_TO_REG(adapter->eitr_param)); |
9a799d71 AK |
1435 | |
1436 | ixgbe_set_ivar(adapter, IXGBE_IVAR_RX_QUEUE(0), 0); | |
021230d4 AV |
1437 | ixgbe_set_ivar(adapter, IXGBE_IVAR_TX_QUEUE(0), 0); |
1438 | ||
1439 | map_vector_to_rxq(adapter, 0, 0); | |
1440 | map_vector_to_txq(adapter, 0, 0); | |
1441 | ||
1442 | DPRINTK(HW, INFO, "Legacy interrupt IVAR setup done\n"); | |
9a799d71 AK |
1443 | } |
1444 | ||
1445 | /** | |
3a581073 | 1446 | * ixgbe_configure_tx - Configure 8259x Transmit Unit after Reset |
9a799d71 AK |
1447 | * @adapter: board private structure |
1448 | * | |
1449 | * Configure the Tx unit of the MAC after a reset. | |
1450 | **/ | |
1451 | static void ixgbe_configure_tx(struct ixgbe_adapter *adapter) | |
1452 | { | |
e01c31a5 | 1453 | u64 tdba, tdwba; |
9a799d71 | 1454 | struct ixgbe_hw *hw = &adapter->hw; |
021230d4 | 1455 | u32 i, j, tdlen, txctrl; |
9a799d71 AK |
1456 | |
1457 | /* Setup the HW Tx Head and Tail descriptor pointers */ | |
1458 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
e01c31a5 JB |
1459 | struct ixgbe_ring *ring = &adapter->tx_ring[i]; |
1460 | j = ring->reg_idx; | |
1461 | tdba = ring->dma; | |
1462 | tdlen = ring->count * sizeof(union ixgbe_adv_tx_desc); | |
021230d4 | 1463 | IXGBE_WRITE_REG(hw, IXGBE_TDBAL(j), |
e01c31a5 | 1464 | (tdba & DMA_32BIT_MASK)); |
021230d4 | 1465 | IXGBE_WRITE_REG(hw, IXGBE_TDBAH(j), (tdba >> 32)); |
e01c31a5 JB |
1466 | tdwba = ring->dma + |
1467 | (ring->count * sizeof(union ixgbe_adv_tx_desc)); | |
1468 | tdwba |= IXGBE_TDWBAL_HEAD_WB_ENABLE; | |
1469 | IXGBE_WRITE_REG(hw, IXGBE_TDWBAL(j), tdwba & DMA_32BIT_MASK); | |
1470 | IXGBE_WRITE_REG(hw, IXGBE_TDWBAH(j), (tdwba >> 32)); | |
021230d4 AV |
1471 | IXGBE_WRITE_REG(hw, IXGBE_TDLEN(j), tdlen); |
1472 | IXGBE_WRITE_REG(hw, IXGBE_TDH(j), 0); | |
1473 | IXGBE_WRITE_REG(hw, IXGBE_TDT(j), 0); | |
1474 | adapter->tx_ring[i].head = IXGBE_TDH(j); | |
1475 | adapter->tx_ring[i].tail = IXGBE_TDT(j); | |
1476 | /* Disable Tx Head Writeback RO bit, since this hoses | |
1477 | * bookkeeping if things aren't delivered in order. | |
1478 | */ | |
e01c31a5 | 1479 | txctrl = IXGBE_READ_REG(hw, IXGBE_DCA_TXCTRL(j)); |
021230d4 | 1480 | txctrl &= ~IXGBE_DCA_TXCTRL_TX_WB_RO_EN; |
e01c31a5 | 1481 | IXGBE_WRITE_REG(hw, IXGBE_DCA_TXCTRL(j), txctrl); |
9a799d71 | 1482 | } |
9a799d71 AK |
1483 | } |
1484 | ||
cc41ac7c JB |
1485 | #define IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT 2 |
1486 | ||
1487 | static void ixgbe_configure_srrctl(struct ixgbe_adapter *adapter, int index) | |
1488 | { | |
1489 | struct ixgbe_ring *rx_ring; | |
1490 | u32 srrctl; | |
1491 | int queue0; | |
3be1adfb AD |
1492 | unsigned long mask; |
1493 | ||
1494 | /* program one srrctl register per VMDq index */ | |
1495 | if (adapter->flags & IXGBE_FLAG_VMDQ_ENABLED) { | |
1496 | long shift, len; | |
1497 | mask = (unsigned long) adapter->ring_feature[RING_F_RSS].mask; | |
1498 | len = sizeof(adapter->ring_feature[RING_F_VMDQ].mask) * 8; | |
1499 | shift = find_first_bit(&mask, len); | |
1500 | queue0 = index & mask; | |
1501 | index = (index & mask) >> shift; | |
1502 | /* program one srrctl per RSS queue since RDRXCTL.MVMEN is enabled */ | |
cc41ac7c | 1503 | } else { |
3be1adfb AD |
1504 | mask = (unsigned long) adapter->ring_feature[RING_F_RSS].mask; |
1505 | queue0 = index & mask; | |
1506 | index = index & mask; | |
cc41ac7c | 1507 | } |
3be1adfb | 1508 | |
cc41ac7c JB |
1509 | rx_ring = &adapter->rx_ring[queue0]; |
1510 | ||
1511 | srrctl = IXGBE_READ_REG(&adapter->hw, IXGBE_SRRCTL(index)); | |
1512 | ||
1513 | srrctl &= ~IXGBE_SRRCTL_BSIZEHDR_MASK; | |
1514 | srrctl &= ~IXGBE_SRRCTL_BSIZEPKT_MASK; | |
1515 | ||
1516 | if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) { | |
1517 | srrctl |= IXGBE_RXBUFFER_2048 >> IXGBE_SRRCTL_BSIZEPKT_SHIFT; | |
1518 | srrctl |= IXGBE_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS; | |
1519 | srrctl |= ((IXGBE_RX_HDR_SIZE << | |
b4617240 PW |
1520 | IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT) & |
1521 | IXGBE_SRRCTL_BSIZEHDR_MASK); | |
cc41ac7c JB |
1522 | } else { |
1523 | srrctl |= IXGBE_SRRCTL_DESCTYPE_ADV_ONEBUF; | |
1524 | ||
1525 | if (rx_ring->rx_buf_len == MAXIMUM_ETHERNET_VLAN_SIZE) | |
1526 | srrctl |= IXGBE_RXBUFFER_2048 >> | |
1527 | IXGBE_SRRCTL_BSIZEPKT_SHIFT; | |
1528 | else | |
1529 | srrctl |= rx_ring->rx_buf_len >> | |
1530 | IXGBE_SRRCTL_BSIZEPKT_SHIFT; | |
1531 | } | |
1532 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_SRRCTL(index), srrctl); | |
1533 | } | |
9a799d71 | 1534 | |
177db6ff MC |
1535 | /** |
1536 | * ixgbe_get_skb_hdr - helper function for LRO header processing | |
1537 | * @skb: pointer to sk_buff to be added to LRO packet | |
b4617240 | 1538 | * @iphdr: pointer to ip header structure |
177db6ff MC |
1539 | * @tcph: pointer to tcp header structure |
1540 | * @hdr_flags: pointer to header flags | |
1541 | * @priv: private data | |
1542 | **/ | |
1543 | static int ixgbe_get_skb_hdr(struct sk_buff *skb, void **iphdr, void **tcph, | |
1544 | u64 *hdr_flags, void *priv) | |
1545 | { | |
1546 | union ixgbe_adv_rx_desc *rx_desc = priv; | |
1547 | ||
1548 | /* Verify that this is a valid IPv4 TCP packet */ | |
e9990a9c JB |
1549 | if (!((ixgbe_get_pkt_info(rx_desc) & IXGBE_RXDADV_PKTTYPE_IPV4) && |
1550 | (ixgbe_get_pkt_info(rx_desc) & IXGBE_RXDADV_PKTTYPE_TCP))) | |
177db6ff MC |
1551 | return -1; |
1552 | ||
1553 | /* Set network headers */ | |
1554 | skb_reset_network_header(skb); | |
1555 | skb_set_transport_header(skb, ip_hdrlen(skb)); | |
1556 | *iphdr = ip_hdr(skb); | |
1557 | *tcph = tcp_hdr(skb); | |
1558 | *hdr_flags = LRO_IPV4 | LRO_TCP; | |
1559 | return 0; | |
1560 | } | |
1561 | ||
cc41ac7c | 1562 | #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \ |
b4617240 | 1563 | (((S) & (PAGE_SIZE - 1)) ? 1 : 0)) |
cc41ac7c | 1564 | |
9a799d71 | 1565 | /** |
3a581073 | 1566 | * ixgbe_configure_rx - Configure 8259x Receive Unit after Reset |
9a799d71 AK |
1567 | * @adapter: board private structure |
1568 | * | |
1569 | * Configure the Rx unit of the MAC after a reset. | |
1570 | **/ | |
1571 | static void ixgbe_configure_rx(struct ixgbe_adapter *adapter) | |
1572 | { | |
1573 | u64 rdba; | |
1574 | struct ixgbe_hw *hw = &adapter->hw; | |
1575 | struct net_device *netdev = adapter->netdev; | |
1576 | int max_frame = netdev->mtu + ETH_HLEN + ETH_FCS_LEN; | |
021230d4 | 1577 | int i, j; |
9a799d71 | 1578 | u32 rdlen, rxctrl, rxcsum; |
7c6e0a43 JB |
1579 | static const u32 seed[10] = { 0xE291D73D, 0x1805EC6C, 0x2A94B30D, |
1580 | 0xA54F2BEC, 0xEA49AF7C, 0xE214AD3D, 0xB855AABE, | |
1581 | 0x6A3E67EA, 0x14364D17, 0x3BED200D}; | |
9a799d71 | 1582 | u32 fctrl, hlreg0; |
9a799d71 | 1583 | u32 pages; |
cc41ac7c JB |
1584 | u32 reta = 0, mrqc; |
1585 | u32 rdrxctl; | |
7c6e0a43 | 1586 | int rx_buf_len; |
9a799d71 AK |
1587 | |
1588 | /* Decide whether to use packet split mode or not */ | |
762f4c57 | 1589 | adapter->flags |= IXGBE_FLAG_RX_PS_ENABLED; |
9a799d71 AK |
1590 | |
1591 | /* Set the RX buffer length according to the mode */ | |
1592 | if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) { | |
7c6e0a43 | 1593 | rx_buf_len = IXGBE_RX_HDR_SIZE; |
9a799d71 AK |
1594 | } else { |
1595 | if (netdev->mtu <= ETH_DATA_LEN) | |
7c6e0a43 | 1596 | rx_buf_len = MAXIMUM_ETHERNET_VLAN_SIZE; |
9a799d71 | 1597 | else |
7c6e0a43 | 1598 | rx_buf_len = ALIGN(max_frame, 1024); |
9a799d71 AK |
1599 | } |
1600 | ||
1601 | fctrl = IXGBE_READ_REG(&adapter->hw, IXGBE_FCTRL); | |
1602 | fctrl |= IXGBE_FCTRL_BAM; | |
021230d4 | 1603 | fctrl |= IXGBE_FCTRL_DPF; /* discard pause frames when FC enabled */ |
9a799d71 AK |
1604 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_FCTRL, fctrl); |
1605 | ||
1606 | hlreg0 = IXGBE_READ_REG(hw, IXGBE_HLREG0); | |
1607 | if (adapter->netdev->mtu <= ETH_DATA_LEN) | |
1608 | hlreg0 &= ~IXGBE_HLREG0_JUMBOEN; | |
1609 | else | |
1610 | hlreg0 |= IXGBE_HLREG0_JUMBOEN; | |
1611 | IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0); | |
1612 | ||
1613 | pages = PAGE_USE_COUNT(adapter->netdev->mtu); | |
1614 | ||
9a799d71 AK |
1615 | rdlen = adapter->rx_ring[0].count * sizeof(union ixgbe_adv_rx_desc); |
1616 | /* disable receives while setting up the descriptors */ | |
1617 | rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL); | |
1618 | IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, rxctrl & ~IXGBE_RXCTRL_RXEN); | |
1619 | ||
1620 | /* Setup the HW Rx Head and Tail Descriptor Pointers and | |
1621 | * the Base and Length of the Rx Descriptor Ring */ | |
1622 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
1623 | rdba = adapter->rx_ring[i].dma; | |
7c6e0a43 JB |
1624 | j = adapter->rx_ring[i].reg_idx; |
1625 | IXGBE_WRITE_REG(hw, IXGBE_RDBAL(j), (rdba & DMA_32BIT_MASK)); | |
1626 | IXGBE_WRITE_REG(hw, IXGBE_RDBAH(j), (rdba >> 32)); | |
1627 | IXGBE_WRITE_REG(hw, IXGBE_RDLEN(j), rdlen); | |
1628 | IXGBE_WRITE_REG(hw, IXGBE_RDH(j), 0); | |
1629 | IXGBE_WRITE_REG(hw, IXGBE_RDT(j), 0); | |
1630 | adapter->rx_ring[i].head = IXGBE_RDH(j); | |
1631 | adapter->rx_ring[i].tail = IXGBE_RDT(j); | |
1632 | adapter->rx_ring[i].rx_buf_len = rx_buf_len; | |
e9990a9c JB |
1633 | /* Intitial LRO Settings */ |
1634 | adapter->rx_ring[i].lro_mgr.max_aggr = IXGBE_MAX_LRO_AGGREGATE; | |
1635 | adapter->rx_ring[i].lro_mgr.max_desc = IXGBE_MAX_LRO_DESCRIPTORS; | |
1636 | adapter->rx_ring[i].lro_mgr.get_skb_header = ixgbe_get_skb_hdr; | |
1637 | adapter->rx_ring[i].lro_mgr.features = LRO_F_EXTRACT_VLAN_ID; | |
1638 | if (!(adapter->flags & IXGBE_FLAG_IN_NETPOLL)) | |
1639 | adapter->rx_ring[i].lro_mgr.features |= LRO_F_NAPI; | |
1640 | adapter->rx_ring[i].lro_mgr.dev = adapter->netdev; | |
1641 | adapter->rx_ring[i].lro_mgr.ip_summed = CHECKSUM_UNNECESSARY; | |
1642 | adapter->rx_ring[i].lro_mgr.ip_summed_aggr = CHECKSUM_UNNECESSARY; | |
cc41ac7c JB |
1643 | |
1644 | ixgbe_configure_srrctl(adapter, j); | |
9a799d71 AK |
1645 | } |
1646 | ||
cc41ac7c JB |
1647 | /* |
1648 | * For VMDq support of different descriptor types or | |
1649 | * buffer sizes through the use of multiple SRRCTL | |
1650 | * registers, RDRXCTL.MVMEN must be set to 1 | |
1651 | * | |
1652 | * also, the manual doesn't mention it clearly but DCA hints | |
1653 | * will only use queue 0's tags unless this bit is set. Side | |
1654 | * effects of setting this bit are only that SRRCTL must be | |
1655 | * fully programmed [0..15] | |
1656 | */ | |
1657 | rdrxctl = IXGBE_READ_REG(hw, IXGBE_RDRXCTL); | |
1658 | rdrxctl |= IXGBE_RDRXCTL_MVMEN; | |
1659 | IXGBE_WRITE_REG(hw, IXGBE_RDRXCTL, rdrxctl); | |
1660 | ||
177db6ff | 1661 | |
021230d4 | 1662 | if (adapter->flags & IXGBE_FLAG_RSS_ENABLED) { |
9a799d71 | 1663 | /* Fill out redirection table */ |
021230d4 AV |
1664 | for (i = 0, j = 0; i < 128; i++, j++) { |
1665 | if (j == adapter->ring_feature[RING_F_RSS].indices) | |
1666 | j = 0; | |
1667 | /* reta = 4-byte sliding window of | |
1668 | * 0x00..(indices-1)(indices-1)00..etc. */ | |
1669 | reta = (reta << 8) | (j * 0x11); | |
1670 | if ((i & 3) == 3) | |
1671 | IXGBE_WRITE_REG(hw, IXGBE_RETA(i >> 2), reta); | |
9a799d71 AK |
1672 | } |
1673 | ||
1674 | /* Fill out hash function seeds */ | |
1675 | for (i = 0; i < 10; i++) | |
7c6e0a43 | 1676 | IXGBE_WRITE_REG(hw, IXGBE_RSSRK(i), seed[i]); |
9a799d71 AK |
1677 | |
1678 | mrqc = IXGBE_MRQC_RSSEN | |
1679 | /* Perform hash on these packet types */ | |
7c6e0a43 JB |
1680 | | IXGBE_MRQC_RSS_FIELD_IPV4 |
1681 | | IXGBE_MRQC_RSS_FIELD_IPV4_TCP | |
1682 | | IXGBE_MRQC_RSS_FIELD_IPV4_UDP | |
1683 | | IXGBE_MRQC_RSS_FIELD_IPV6_EX_TCP | |
1684 | | IXGBE_MRQC_RSS_FIELD_IPV6_EX | |
1685 | | IXGBE_MRQC_RSS_FIELD_IPV6 | |
1686 | | IXGBE_MRQC_RSS_FIELD_IPV6_TCP | |
1687 | | IXGBE_MRQC_RSS_FIELD_IPV6_UDP | |
1688 | | IXGBE_MRQC_RSS_FIELD_IPV6_EX_UDP; | |
9a799d71 | 1689 | IXGBE_WRITE_REG(hw, IXGBE_MRQC, mrqc); |
021230d4 | 1690 | } |
9a799d71 | 1691 | |
021230d4 AV |
1692 | rxcsum = IXGBE_READ_REG(hw, IXGBE_RXCSUM); |
1693 | ||
1694 | if (adapter->flags & IXGBE_FLAG_RSS_ENABLED || | |
1695 | adapter->flags & IXGBE_FLAG_RX_CSUM_ENABLED) { | |
1696 | /* Disable indicating checksum in descriptor, enables | |
1697 | * RSS hash */ | |
9a799d71 | 1698 | rxcsum |= IXGBE_RXCSUM_PCSD; |
9a799d71 | 1699 | } |
021230d4 AV |
1700 | if (!(rxcsum & IXGBE_RXCSUM_PCSD)) { |
1701 | /* Enable IPv4 payload checksum for UDP fragments | |
1702 | * if PCSD is not set */ | |
1703 | rxcsum |= IXGBE_RXCSUM_IPPCSE; | |
1704 | } | |
1705 | ||
1706 | IXGBE_WRITE_REG(hw, IXGBE_RXCSUM, rxcsum); | |
9a799d71 AK |
1707 | } |
1708 | ||
1709 | static void ixgbe_vlan_rx_register(struct net_device *netdev, | |
b4617240 | 1710 | struct vlan_group *grp) |
9a799d71 AK |
1711 | { |
1712 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
1713 | u32 ctrl; | |
1714 | ||
d4f80882 AV |
1715 | if (!test_bit(__IXGBE_DOWN, &adapter->state)) |
1716 | ixgbe_irq_disable(adapter); | |
9a799d71 AK |
1717 | adapter->vlgrp = grp; |
1718 | ||
1719 | if (grp) { | |
1720 | /* enable VLAN tag insert/strip */ | |
1721 | ctrl = IXGBE_READ_REG(&adapter->hw, IXGBE_VLNCTRL); | |
746b9f02 | 1722 | ctrl |= IXGBE_VLNCTRL_VME; |
9a799d71 AK |
1723 | ctrl &= ~IXGBE_VLNCTRL_CFIEN; |
1724 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_VLNCTRL, ctrl); | |
1725 | } | |
1726 | ||
d4f80882 AV |
1727 | if (!test_bit(__IXGBE_DOWN, &adapter->state)) |
1728 | ixgbe_irq_enable(adapter); | |
9a799d71 AK |
1729 | } |
1730 | ||
1731 | static void ixgbe_vlan_rx_add_vid(struct net_device *netdev, u16 vid) | |
1732 | { | |
1733 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
c44ade9e | 1734 | struct ixgbe_hw *hw = &adapter->hw; |
9a799d71 AK |
1735 | |
1736 | /* add VID to filter table */ | |
c44ade9e | 1737 | hw->mac.ops.set_vfta(&adapter->hw, vid, 0, true); |
9a799d71 AK |
1738 | } |
1739 | ||
1740 | static void ixgbe_vlan_rx_kill_vid(struct net_device *netdev, u16 vid) | |
1741 | { | |
1742 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
c44ade9e | 1743 | struct ixgbe_hw *hw = &adapter->hw; |
9a799d71 | 1744 | |
d4f80882 AV |
1745 | if (!test_bit(__IXGBE_DOWN, &adapter->state)) |
1746 | ixgbe_irq_disable(adapter); | |
1747 | ||
9a799d71 | 1748 | vlan_group_set_device(adapter->vlgrp, vid, NULL); |
d4f80882 AV |
1749 | |
1750 | if (!test_bit(__IXGBE_DOWN, &adapter->state)) | |
1751 | ixgbe_irq_enable(adapter); | |
9a799d71 AK |
1752 | |
1753 | /* remove VID from filter table */ | |
c44ade9e | 1754 | hw->mac.ops.set_vfta(&adapter->hw, vid, 0, false); |
9a799d71 AK |
1755 | } |
1756 | ||
1757 | static void ixgbe_restore_vlan(struct ixgbe_adapter *adapter) | |
1758 | { | |
1759 | ixgbe_vlan_rx_register(adapter->netdev, adapter->vlgrp); | |
1760 | ||
1761 | if (adapter->vlgrp) { | |
1762 | u16 vid; | |
1763 | for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) { | |
1764 | if (!vlan_group_get_device(adapter->vlgrp, vid)) | |
1765 | continue; | |
1766 | ixgbe_vlan_rx_add_vid(adapter->netdev, vid); | |
1767 | } | |
1768 | } | |
1769 | } | |
1770 | ||
2c5645cf CL |
1771 | static u8 *ixgbe_addr_list_itr(struct ixgbe_hw *hw, u8 **mc_addr_ptr, u32 *vmdq) |
1772 | { | |
1773 | struct dev_mc_list *mc_ptr; | |
1774 | u8 *addr = *mc_addr_ptr; | |
1775 | *vmdq = 0; | |
1776 | ||
1777 | mc_ptr = container_of(addr, struct dev_mc_list, dmi_addr[0]); | |
1778 | if (mc_ptr->next) | |
1779 | *mc_addr_ptr = mc_ptr->next->dmi_addr; | |
1780 | else | |
1781 | *mc_addr_ptr = NULL; | |
1782 | ||
1783 | return addr; | |
1784 | } | |
1785 | ||
9a799d71 | 1786 | /** |
2c5645cf | 1787 | * ixgbe_set_rx_mode - Unicast, Multicast and Promiscuous mode set |
9a799d71 AK |
1788 | * @netdev: network interface device structure |
1789 | * | |
2c5645cf CL |
1790 | * The set_rx_method entry point is called whenever the unicast/multicast |
1791 | * address list or the network interface flags are updated. This routine is | |
1792 | * responsible for configuring the hardware for proper unicast, multicast and | |
1793 | * promiscuous mode. | |
9a799d71 | 1794 | **/ |
2c5645cf | 1795 | static void ixgbe_set_rx_mode(struct net_device *netdev) |
9a799d71 AK |
1796 | { |
1797 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
1798 | struct ixgbe_hw *hw = &adapter->hw; | |
3d01625a | 1799 | u32 fctrl, vlnctrl; |
2c5645cf CL |
1800 | u8 *addr_list = NULL; |
1801 | int addr_count = 0; | |
9a799d71 AK |
1802 | |
1803 | /* Check for Promiscuous and All Multicast modes */ | |
1804 | ||
1805 | fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL); | |
3d01625a | 1806 | vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL); |
9a799d71 AK |
1807 | |
1808 | if (netdev->flags & IFF_PROMISC) { | |
2c5645cf | 1809 | hw->addr_ctrl.user_set_promisc = 1; |
9a799d71 | 1810 | fctrl |= (IXGBE_FCTRL_UPE | IXGBE_FCTRL_MPE); |
3d01625a | 1811 | vlnctrl &= ~IXGBE_VLNCTRL_VFE; |
9a799d71 | 1812 | } else { |
746b9f02 PM |
1813 | if (netdev->flags & IFF_ALLMULTI) { |
1814 | fctrl |= IXGBE_FCTRL_MPE; | |
1815 | fctrl &= ~IXGBE_FCTRL_UPE; | |
1816 | } else { | |
1817 | fctrl &= ~(IXGBE_FCTRL_UPE | IXGBE_FCTRL_MPE); | |
1818 | } | |
3d01625a | 1819 | vlnctrl |= IXGBE_VLNCTRL_VFE; |
2c5645cf | 1820 | hw->addr_ctrl.user_set_promisc = 0; |
9a799d71 AK |
1821 | } |
1822 | ||
1823 | IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl); | |
3d01625a | 1824 | IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl); |
9a799d71 | 1825 | |
2c5645cf CL |
1826 | /* reprogram secondary unicast list */ |
1827 | addr_count = netdev->uc_count; | |
1828 | if (addr_count) | |
1829 | addr_list = netdev->uc_list->dmi_addr; | |
c44ade9e JB |
1830 | hw->mac.ops.update_uc_addr_list(hw, addr_list, addr_count, |
1831 | ixgbe_addr_list_itr); | |
9a799d71 | 1832 | |
2c5645cf CL |
1833 | /* reprogram multicast list */ |
1834 | addr_count = netdev->mc_count; | |
1835 | if (addr_count) | |
1836 | addr_list = netdev->mc_list->dmi_addr; | |
c44ade9e JB |
1837 | hw->mac.ops.update_mc_addr_list(hw, addr_list, addr_count, |
1838 | ixgbe_addr_list_itr); | |
9a799d71 AK |
1839 | } |
1840 | ||
021230d4 AV |
1841 | static void ixgbe_napi_enable_all(struct ixgbe_adapter *adapter) |
1842 | { | |
1843 | int q_idx; | |
1844 | struct ixgbe_q_vector *q_vector; | |
1845 | int q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS; | |
1846 | ||
1847 | /* legacy and MSI only use one vector */ | |
1848 | if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED)) | |
1849 | q_vectors = 1; | |
1850 | ||
1851 | for (q_idx = 0; q_idx < q_vectors; q_idx++) { | |
f0848276 | 1852 | struct napi_struct *napi; |
021230d4 AV |
1853 | q_vector = &adapter->q_vector[q_idx]; |
1854 | if (!q_vector->rxr_count) | |
1855 | continue; | |
f0848276 JB |
1856 | napi = &q_vector->napi; |
1857 | if ((adapter->flags & IXGBE_FLAG_MSIX_ENABLED) && | |
1858 | (q_vector->rxr_count > 1)) | |
1859 | napi->poll = &ixgbe_clean_rxonly_many; | |
1860 | ||
1861 | napi_enable(napi); | |
021230d4 AV |
1862 | } |
1863 | } | |
1864 | ||
1865 | static void ixgbe_napi_disable_all(struct ixgbe_adapter *adapter) | |
1866 | { | |
1867 | int q_idx; | |
1868 | struct ixgbe_q_vector *q_vector; | |
1869 | int q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS; | |
1870 | ||
1871 | /* legacy and MSI only use one vector */ | |
1872 | if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED)) | |
1873 | q_vectors = 1; | |
1874 | ||
1875 | for (q_idx = 0; q_idx < q_vectors; q_idx++) { | |
1876 | q_vector = &adapter->q_vector[q_idx]; | |
1877 | if (!q_vector->rxr_count) | |
1878 | continue; | |
1879 | napi_disable(&q_vector->napi); | |
1880 | } | |
1881 | } | |
1882 | ||
9a799d71 AK |
1883 | static void ixgbe_configure(struct ixgbe_adapter *adapter) |
1884 | { | |
1885 | struct net_device *netdev = adapter->netdev; | |
1886 | int i; | |
1887 | ||
2c5645cf | 1888 | ixgbe_set_rx_mode(netdev); |
9a799d71 AK |
1889 | |
1890 | ixgbe_restore_vlan(adapter); | |
1891 | ||
1892 | ixgbe_configure_tx(adapter); | |
1893 | ixgbe_configure_rx(adapter); | |
1894 | for (i = 0; i < adapter->num_rx_queues; i++) | |
1895 | ixgbe_alloc_rx_buffers(adapter, &adapter->rx_ring[i], | |
b4617240 | 1896 | (adapter->rx_ring[i].count - 1)); |
9a799d71 AK |
1897 | } |
1898 | ||
1899 | static int ixgbe_up_complete(struct ixgbe_adapter *adapter) | |
1900 | { | |
1901 | struct net_device *netdev = adapter->netdev; | |
9a799d71 | 1902 | struct ixgbe_hw *hw = &adapter->hw; |
021230d4 | 1903 | int i, j = 0; |
9a799d71 | 1904 | int max_frame = netdev->mtu + ETH_HLEN + ETH_FCS_LEN; |
021230d4 AV |
1905 | u32 txdctl, rxdctl, mhadd; |
1906 | u32 gpie; | |
9a799d71 | 1907 | |
5eba3699 AV |
1908 | ixgbe_get_hw_control(adapter); |
1909 | ||
021230d4 AV |
1910 | if ((adapter->flags & IXGBE_FLAG_MSIX_ENABLED) || |
1911 | (adapter->flags & IXGBE_FLAG_MSI_ENABLED)) { | |
9a799d71 AK |
1912 | if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) { |
1913 | gpie = (IXGBE_GPIE_MSIX_MODE | IXGBE_GPIE_EIAME | | |
b4617240 | 1914 | IXGBE_GPIE_PBA_SUPPORT | IXGBE_GPIE_OCD); |
9a799d71 AK |
1915 | } else { |
1916 | /* MSI only */ | |
021230d4 | 1917 | gpie = 0; |
9a799d71 | 1918 | } |
021230d4 AV |
1919 | /* XXX: to interrupt immediately for EICS writes, enable this */ |
1920 | /* gpie |= IXGBE_GPIE_EIMEN; */ | |
1921 | IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie); | |
9a799d71 AK |
1922 | } |
1923 | ||
021230d4 AV |
1924 | if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED)) { |
1925 | /* legacy interrupts, use EIAM to auto-mask when reading EICR, | |
1926 | * specifically only auto mask tx and rx interrupts */ | |
1927 | IXGBE_WRITE_REG(hw, IXGBE_EIAM, IXGBE_EICS_RTX_QUEUE); | |
1928 | } | |
9a799d71 | 1929 | |
021230d4 | 1930 | mhadd = IXGBE_READ_REG(hw, IXGBE_MHADD); |
9a799d71 AK |
1931 | if (max_frame != (mhadd >> IXGBE_MHADD_MFS_SHIFT)) { |
1932 | mhadd &= ~IXGBE_MHADD_MFS_MASK; | |
1933 | mhadd |= max_frame << IXGBE_MHADD_MFS_SHIFT; | |
1934 | ||
1935 | IXGBE_WRITE_REG(hw, IXGBE_MHADD, mhadd); | |
1936 | } | |
1937 | ||
1938 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
021230d4 AV |
1939 | j = adapter->tx_ring[i].reg_idx; |
1940 | txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(j)); | |
e01c31a5 JB |
1941 | /* enable WTHRESH=8 descriptors, to encourage burst writeback */ |
1942 | txdctl |= (8 << 16); | |
9a799d71 | 1943 | txdctl |= IXGBE_TXDCTL_ENABLE; |
021230d4 | 1944 | IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(j), txdctl); |
9a799d71 AK |
1945 | } |
1946 | ||
1947 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
021230d4 AV |
1948 | j = adapter->rx_ring[i].reg_idx; |
1949 | rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(j)); | |
1950 | /* enable PTHRESH=32 descriptors (half the internal cache) | |
1951 | * and HTHRESH=0 descriptors (to minimize latency on fetch), | |
1952 | * this also removes a pesky rx_no_buffer_count increment */ | |
1953 | rxdctl |= 0x0020; | |
9a799d71 | 1954 | rxdctl |= IXGBE_RXDCTL_ENABLE; |
021230d4 | 1955 | IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(j), rxdctl); |
9a799d71 AK |
1956 | } |
1957 | /* enable all receives */ | |
1958 | rxdctl = IXGBE_READ_REG(hw, IXGBE_RXCTRL); | |
1959 | rxdctl |= (IXGBE_RXCTRL_DMBYPS | IXGBE_RXCTRL_RXEN); | |
1960 | IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, rxdctl); | |
1961 | ||
1962 | if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) | |
1963 | ixgbe_configure_msix(adapter); | |
1964 | else | |
1965 | ixgbe_configure_msi_and_legacy(adapter); | |
1966 | ||
1967 | clear_bit(__IXGBE_DOWN, &adapter->state); | |
021230d4 AV |
1968 | ixgbe_napi_enable_all(adapter); |
1969 | ||
1970 | /* clear any pending interrupts, may auto mask */ | |
1971 | IXGBE_READ_REG(hw, IXGBE_EICR); | |
1972 | ||
9a799d71 AK |
1973 | ixgbe_irq_enable(adapter); |
1974 | ||
1975 | /* bring the link up in the watchdog, this could race with our first | |
1976 | * link up interrupt but shouldn't be a problem */ | |
cf8280ee JB |
1977 | adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE; |
1978 | adapter->link_check_timeout = jiffies; | |
9a799d71 AK |
1979 | mod_timer(&adapter->watchdog_timer, jiffies); |
1980 | return 0; | |
1981 | } | |
1982 | ||
d4f80882 AV |
1983 | void ixgbe_reinit_locked(struct ixgbe_adapter *adapter) |
1984 | { | |
1985 | WARN_ON(in_interrupt()); | |
1986 | while (test_and_set_bit(__IXGBE_RESETTING, &adapter->state)) | |
1987 | msleep(1); | |
1988 | ixgbe_down(adapter); | |
1989 | ixgbe_up(adapter); | |
1990 | clear_bit(__IXGBE_RESETTING, &adapter->state); | |
1991 | } | |
1992 | ||
9a799d71 AK |
1993 | int ixgbe_up(struct ixgbe_adapter *adapter) |
1994 | { | |
1995 | /* hardware has been reset, we need to reload some things */ | |
1996 | ixgbe_configure(adapter); | |
1997 | ||
1998 | return ixgbe_up_complete(adapter); | |
1999 | } | |
2000 | ||
2001 | void ixgbe_reset(struct ixgbe_adapter *adapter) | |
2002 | { | |
c44ade9e JB |
2003 | struct ixgbe_hw *hw = &adapter->hw; |
2004 | if (hw->mac.ops.init_hw(hw)) | |
2005 | dev_err(&adapter->pdev->dev, "Hardware Error\n"); | |
9a799d71 AK |
2006 | |
2007 | /* reprogram the RAR[0] in case user changed it. */ | |
c44ade9e | 2008 | hw->mac.ops.set_rar(hw, 0, hw->mac.addr, 0, IXGBE_RAH_AV); |
9a799d71 AK |
2009 | |
2010 | } | |
2011 | ||
9a799d71 AK |
2012 | /** |
2013 | * ixgbe_clean_rx_ring - Free Rx Buffers per Queue | |
2014 | * @adapter: board private structure | |
2015 | * @rx_ring: ring to free buffers from | |
2016 | **/ | |
2017 | static void ixgbe_clean_rx_ring(struct ixgbe_adapter *adapter, | |
b4617240 | 2018 | struct ixgbe_ring *rx_ring) |
9a799d71 AK |
2019 | { |
2020 | struct pci_dev *pdev = adapter->pdev; | |
2021 | unsigned long size; | |
2022 | unsigned int i; | |
2023 | ||
2024 | /* Free all the Rx ring sk_buffs */ | |
2025 | ||
2026 | for (i = 0; i < rx_ring->count; i++) { | |
2027 | struct ixgbe_rx_buffer *rx_buffer_info; | |
2028 | ||
2029 | rx_buffer_info = &rx_ring->rx_buffer_info[i]; | |
2030 | if (rx_buffer_info->dma) { | |
2031 | pci_unmap_single(pdev, rx_buffer_info->dma, | |
b4617240 PW |
2032 | rx_ring->rx_buf_len, |
2033 | PCI_DMA_FROMDEVICE); | |
9a799d71 AK |
2034 | rx_buffer_info->dma = 0; |
2035 | } | |
2036 | if (rx_buffer_info->skb) { | |
2037 | dev_kfree_skb(rx_buffer_info->skb); | |
2038 | rx_buffer_info->skb = NULL; | |
2039 | } | |
2040 | if (!rx_buffer_info->page) | |
2041 | continue; | |
762f4c57 JB |
2042 | pci_unmap_page(pdev, rx_buffer_info->page_dma, PAGE_SIZE / 2, |
2043 | PCI_DMA_FROMDEVICE); | |
9a799d71 | 2044 | rx_buffer_info->page_dma = 0; |
9a799d71 AK |
2045 | put_page(rx_buffer_info->page); |
2046 | rx_buffer_info->page = NULL; | |
762f4c57 | 2047 | rx_buffer_info->page_offset = 0; |
9a799d71 AK |
2048 | } |
2049 | ||
2050 | size = sizeof(struct ixgbe_rx_buffer) * rx_ring->count; | |
2051 | memset(rx_ring->rx_buffer_info, 0, size); | |
2052 | ||
2053 | /* Zero out the descriptor ring */ | |
2054 | memset(rx_ring->desc, 0, rx_ring->size); | |
2055 | ||
2056 | rx_ring->next_to_clean = 0; | |
2057 | rx_ring->next_to_use = 0; | |
2058 | ||
2059 | writel(0, adapter->hw.hw_addr + rx_ring->head); | |
2060 | writel(0, adapter->hw.hw_addr + rx_ring->tail); | |
2061 | } | |
2062 | ||
2063 | /** | |
2064 | * ixgbe_clean_tx_ring - Free Tx Buffers | |
2065 | * @adapter: board private structure | |
2066 | * @tx_ring: ring to be cleaned | |
2067 | **/ | |
2068 | static void ixgbe_clean_tx_ring(struct ixgbe_adapter *adapter, | |
b4617240 | 2069 | struct ixgbe_ring *tx_ring) |
9a799d71 AK |
2070 | { |
2071 | struct ixgbe_tx_buffer *tx_buffer_info; | |
2072 | unsigned long size; | |
2073 | unsigned int i; | |
2074 | ||
2075 | /* Free all the Tx ring sk_buffs */ | |
2076 | ||
2077 | for (i = 0; i < tx_ring->count; i++) { | |
2078 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; | |
2079 | ixgbe_unmap_and_free_tx_resource(adapter, tx_buffer_info); | |
2080 | } | |
2081 | ||
2082 | size = sizeof(struct ixgbe_tx_buffer) * tx_ring->count; | |
2083 | memset(tx_ring->tx_buffer_info, 0, size); | |
2084 | ||
2085 | /* Zero out the descriptor ring */ | |
2086 | memset(tx_ring->desc, 0, tx_ring->size); | |
2087 | ||
2088 | tx_ring->next_to_use = 0; | |
2089 | tx_ring->next_to_clean = 0; | |
2090 | ||
2091 | writel(0, adapter->hw.hw_addr + tx_ring->head); | |
2092 | writel(0, adapter->hw.hw_addr + tx_ring->tail); | |
2093 | } | |
2094 | ||
2095 | /** | |
021230d4 | 2096 | * ixgbe_clean_all_rx_rings - Free Rx Buffers for all queues |
9a799d71 AK |
2097 | * @adapter: board private structure |
2098 | **/ | |
021230d4 | 2099 | static void ixgbe_clean_all_rx_rings(struct ixgbe_adapter *adapter) |
9a799d71 AK |
2100 | { |
2101 | int i; | |
2102 | ||
021230d4 AV |
2103 | for (i = 0; i < adapter->num_rx_queues; i++) |
2104 | ixgbe_clean_rx_ring(adapter, &adapter->rx_ring[i]); | |
9a799d71 AK |
2105 | } |
2106 | ||
2107 | /** | |
021230d4 | 2108 | * ixgbe_clean_all_tx_rings - Free Tx Buffers for all queues |
9a799d71 AK |
2109 | * @adapter: board private structure |
2110 | **/ | |
021230d4 | 2111 | static void ixgbe_clean_all_tx_rings(struct ixgbe_adapter *adapter) |
9a799d71 AK |
2112 | { |
2113 | int i; | |
2114 | ||
021230d4 AV |
2115 | for (i = 0; i < adapter->num_tx_queues; i++) |
2116 | ixgbe_clean_tx_ring(adapter, &adapter->tx_ring[i]); | |
9a799d71 AK |
2117 | } |
2118 | ||
2119 | void ixgbe_down(struct ixgbe_adapter *adapter) | |
2120 | { | |
2121 | struct net_device *netdev = adapter->netdev; | |
7f821875 | 2122 | struct ixgbe_hw *hw = &adapter->hw; |
9a799d71 | 2123 | u32 rxctrl; |
7f821875 JB |
2124 | u32 txdctl; |
2125 | int i, j; | |
9a799d71 AK |
2126 | |
2127 | /* signal that we are down to the interrupt handler */ | |
2128 | set_bit(__IXGBE_DOWN, &adapter->state); | |
2129 | ||
2130 | /* disable receives */ | |
7f821875 JB |
2131 | rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL); |
2132 | IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, rxctrl & ~IXGBE_RXCTRL_RXEN); | |
9a799d71 AK |
2133 | |
2134 | netif_tx_disable(netdev); | |
2135 | ||
7f821875 | 2136 | IXGBE_WRITE_FLUSH(hw); |
9a799d71 AK |
2137 | msleep(10); |
2138 | ||
7f821875 JB |
2139 | netif_tx_stop_all_queues(netdev); |
2140 | ||
9a799d71 AK |
2141 | ixgbe_irq_disable(adapter); |
2142 | ||
021230d4 | 2143 | ixgbe_napi_disable_all(adapter); |
7f821875 | 2144 | |
9a799d71 | 2145 | del_timer_sync(&adapter->watchdog_timer); |
cf8280ee | 2146 | cancel_work_sync(&adapter->watchdog_task); |
9a799d71 | 2147 | |
7f821875 JB |
2148 | /* disable transmits in the hardware now that interrupts are off */ |
2149 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
2150 | j = adapter->tx_ring[i].reg_idx; | |
2151 | txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(j)); | |
2152 | IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(j), | |
2153 | (txdctl & ~IXGBE_TXDCTL_ENABLE)); | |
2154 | } | |
2155 | ||
9a799d71 | 2156 | netif_carrier_off(netdev); |
9a799d71 | 2157 | |
5dd2d332 | 2158 | #ifdef CONFIG_IXGBE_DCA |
96b0e0f6 JB |
2159 | if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) { |
2160 | adapter->flags &= ~IXGBE_FLAG_DCA_ENABLED; | |
2161 | dca_remove_requester(&adapter->pdev->dev); | |
2162 | } | |
2163 | ||
2164 | #endif | |
6f4a0e45 PL |
2165 | if (!pci_channel_offline(adapter->pdev)) |
2166 | ixgbe_reset(adapter); | |
9a799d71 AK |
2167 | ixgbe_clean_all_tx_rings(adapter); |
2168 | ixgbe_clean_all_rx_rings(adapter); | |
2169 | ||
5dd2d332 | 2170 | #ifdef CONFIG_IXGBE_DCA |
96b0e0f6 JB |
2171 | /* since we reset the hardware DCA settings were cleared */ |
2172 | if (dca_add_requester(&adapter->pdev->dev) == 0) { | |
2173 | adapter->flags |= IXGBE_FLAG_DCA_ENABLED; | |
2174 | /* always use CB2 mode, difference is masked | |
2175 | * in the CB driver */ | |
b4617240 | 2176 | IXGBE_WRITE_REG(hw, IXGBE_DCA_CTRL, 2); |
96b0e0f6 JB |
2177 | ixgbe_setup_dca(adapter); |
2178 | } | |
2179 | #endif | |
9a799d71 AK |
2180 | } |
2181 | ||
9a799d71 | 2182 | /** |
021230d4 AV |
2183 | * ixgbe_poll - NAPI Rx polling callback |
2184 | * @napi: structure for representing this polling device | |
2185 | * @budget: how many packets driver is allowed to clean | |
2186 | * | |
2187 | * This function is used for legacy and MSI, NAPI mode | |
9a799d71 | 2188 | **/ |
021230d4 | 2189 | static int ixgbe_poll(struct napi_struct *napi, int budget) |
9a799d71 | 2190 | { |
021230d4 | 2191 | struct ixgbe_q_vector *q_vector = container_of(napi, |
b4617240 | 2192 | struct ixgbe_q_vector, napi); |
021230d4 | 2193 | struct ixgbe_adapter *adapter = q_vector->adapter; |
74ce8dd2 | 2194 | int tx_cleaned, work_done = 0; |
9a799d71 | 2195 | |
5dd2d332 | 2196 | #ifdef CONFIG_IXGBE_DCA |
bd0362dd JC |
2197 | if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) { |
2198 | ixgbe_update_tx_dca(adapter, adapter->tx_ring); | |
2199 | ixgbe_update_rx_dca(adapter, adapter->rx_ring); | |
2200 | } | |
2201 | #endif | |
2202 | ||
d2c7ddd6 | 2203 | tx_cleaned = ixgbe_clean_tx_irq(adapter, adapter->tx_ring); |
021230d4 | 2204 | ixgbe_clean_rx_irq(adapter, adapter->rx_ring, &work_done, budget); |
9a799d71 | 2205 | |
d2c7ddd6 DM |
2206 | if (tx_cleaned) |
2207 | work_done = budget; | |
2208 | ||
53e52c72 DM |
2209 | /* If budget not fully consumed, exit the polling mode */ |
2210 | if (work_done < budget) { | |
021230d4 | 2211 | netif_rx_complete(adapter->netdev, napi); |
30efa5a3 | 2212 | if (adapter->itr_setting & 3) |
f494e8fa | 2213 | ixgbe_set_itr(adapter); |
d4f80882 AV |
2214 | if (!test_bit(__IXGBE_DOWN, &adapter->state)) |
2215 | ixgbe_irq_enable(adapter); | |
9a799d71 | 2216 | } |
9a799d71 AK |
2217 | return work_done; |
2218 | } | |
2219 | ||
2220 | /** | |
2221 | * ixgbe_tx_timeout - Respond to a Tx Hang | |
2222 | * @netdev: network interface device structure | |
2223 | **/ | |
2224 | static void ixgbe_tx_timeout(struct net_device *netdev) | |
2225 | { | |
2226 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
2227 | ||
2228 | /* Do the reset outside of interrupt context */ | |
2229 | schedule_work(&adapter->reset_task); | |
2230 | } | |
2231 | ||
2232 | static void ixgbe_reset_task(struct work_struct *work) | |
2233 | { | |
2234 | struct ixgbe_adapter *adapter; | |
2235 | adapter = container_of(work, struct ixgbe_adapter, reset_task); | |
2236 | ||
2237 | adapter->tx_timeout_count++; | |
2238 | ||
d4f80882 | 2239 | ixgbe_reinit_locked(adapter); |
9a799d71 AK |
2240 | } |
2241 | ||
b9804972 JB |
2242 | static void ixgbe_set_num_queues(struct ixgbe_adapter *adapter) |
2243 | { | |
2244 | int nrq = 1, ntq = 1; | |
2245 | int feature_mask = 0, rss_i, rss_m; | |
2246 | ||
2247 | /* Number of supported queues */ | |
2248 | switch (adapter->hw.mac.type) { | |
2249 | case ixgbe_mac_82598EB: | |
2250 | rss_i = adapter->ring_feature[RING_F_RSS].indices; | |
2251 | rss_m = 0; | |
2252 | feature_mask |= IXGBE_FLAG_RSS_ENABLED; | |
2253 | ||
2254 | switch (adapter->flags & feature_mask) { | |
2255 | case (IXGBE_FLAG_RSS_ENABLED): | |
2256 | rss_m = 0xF; | |
2257 | nrq = rss_i; | |
2258 | ntq = rss_i; | |
2259 | break; | |
2260 | case 0: | |
2261 | default: | |
2262 | rss_i = 0; | |
2263 | rss_m = 0; | |
2264 | nrq = 1; | |
2265 | ntq = 1; | |
2266 | break; | |
2267 | } | |
2268 | ||
2269 | adapter->ring_feature[RING_F_RSS].indices = rss_i; | |
2270 | adapter->ring_feature[RING_F_RSS].mask = rss_m; | |
2271 | break; | |
2272 | default: | |
2273 | nrq = 1; | |
2274 | ntq = 1; | |
2275 | break; | |
2276 | } | |
2277 | ||
2278 | adapter->num_rx_queues = nrq; | |
2279 | adapter->num_tx_queues = ntq; | |
2280 | } | |
2281 | ||
021230d4 | 2282 | static void ixgbe_acquire_msix_vectors(struct ixgbe_adapter *adapter, |
b4617240 | 2283 | int vectors) |
021230d4 AV |
2284 | { |
2285 | int err, vector_threshold; | |
2286 | ||
2287 | /* We'll want at least 3 (vector_threshold): | |
2288 | * 1) TxQ[0] Cleanup | |
2289 | * 2) RxQ[0] Cleanup | |
2290 | * 3) Other (Link Status Change, etc.) | |
2291 | * 4) TCP Timer (optional) | |
2292 | */ | |
2293 | vector_threshold = MIN_MSIX_COUNT; | |
2294 | ||
2295 | /* The more we get, the more we will assign to Tx/Rx Cleanup | |
2296 | * for the separate queues...where Rx Cleanup >= Tx Cleanup. | |
2297 | * Right now, we simply care about how many we'll get; we'll | |
2298 | * set them up later while requesting irq's. | |
2299 | */ | |
2300 | while (vectors >= vector_threshold) { | |
2301 | err = pci_enable_msix(adapter->pdev, adapter->msix_entries, | |
b4617240 | 2302 | vectors); |
021230d4 AV |
2303 | if (!err) /* Success in acquiring all requested vectors. */ |
2304 | break; | |
2305 | else if (err < 0) | |
2306 | vectors = 0; /* Nasty failure, quit now */ | |
2307 | else /* err == number of vectors we should try again with */ | |
2308 | vectors = err; | |
2309 | } | |
2310 | ||
2311 | if (vectors < vector_threshold) { | |
2312 | /* Can't allocate enough MSI-X interrupts? Oh well. | |
2313 | * This just means we'll go with either a single MSI | |
2314 | * vector or fall back to legacy interrupts. | |
2315 | */ | |
2316 | DPRINTK(HW, DEBUG, "Unable to allocate MSI-X interrupts\n"); | |
2317 | adapter->flags &= ~IXGBE_FLAG_MSIX_ENABLED; | |
2318 | kfree(adapter->msix_entries); | |
2319 | adapter->msix_entries = NULL; | |
2320 | adapter->flags &= ~IXGBE_FLAG_RSS_ENABLED; | |
b9804972 | 2321 | ixgbe_set_num_queues(adapter); |
021230d4 AV |
2322 | } else { |
2323 | adapter->flags |= IXGBE_FLAG_MSIX_ENABLED; /* Woot! */ | |
2324 | adapter->num_msix_vectors = vectors; | |
2325 | } | |
2326 | } | |
2327 | ||
021230d4 AV |
2328 | /** |
2329 | * ixgbe_cache_ring_register - Descriptor ring to register mapping | |
2330 | * @adapter: board private structure to initialize | |
2331 | * | |
2332 | * Once we know the feature-set enabled for the device, we'll cache | |
2333 | * the register offset the descriptor ring is assigned to. | |
2334 | **/ | |
2335 | static void __devinit ixgbe_cache_ring_register(struct ixgbe_adapter *adapter) | |
2336 | { | |
021230d4 AV |
2337 | int feature_mask = 0, rss_i; |
2338 | int i, txr_idx, rxr_idx; | |
2339 | ||
2340 | /* Number of supported queues */ | |
2341 | switch (adapter->hw.mac.type) { | |
2342 | case ixgbe_mac_82598EB: | |
2343 | rss_i = adapter->ring_feature[RING_F_RSS].indices; | |
2344 | txr_idx = 0; | |
2345 | rxr_idx = 0; | |
2346 | feature_mask |= IXGBE_FLAG_RSS_ENABLED; | |
2347 | switch (adapter->flags & feature_mask) { | |
2348 | case (IXGBE_FLAG_RSS_ENABLED): | |
2349 | for (i = 0; i < adapter->num_rx_queues; i++) | |
2350 | adapter->rx_ring[i].reg_idx = i; | |
2351 | for (i = 0; i < adapter->num_tx_queues; i++) | |
2352 | adapter->tx_ring[i].reg_idx = i; | |
2353 | break; | |
2354 | case 0: | |
2355 | default: | |
2356 | break; | |
2357 | } | |
2358 | break; | |
2359 | default: | |
2360 | break; | |
2361 | } | |
2362 | } | |
2363 | ||
9a799d71 AK |
2364 | /** |
2365 | * ixgbe_alloc_queues - Allocate memory for all rings | |
2366 | * @adapter: board private structure to initialize | |
2367 | * | |
2368 | * We allocate one ring per queue at run-time since we don't know the | |
2369 | * number of queues at compile-time. The polling_netdev array is | |
2370 | * intended for Multiqueue, but should work fine with a single queue. | |
2371 | **/ | |
2372 | static int __devinit ixgbe_alloc_queues(struct ixgbe_adapter *adapter) | |
2373 | { | |
2374 | int i; | |
2375 | ||
2376 | adapter->tx_ring = kcalloc(adapter->num_tx_queues, | |
b4617240 | 2377 | sizeof(struct ixgbe_ring), GFP_KERNEL); |
9a799d71 | 2378 | if (!adapter->tx_ring) |
021230d4 | 2379 | goto err_tx_ring_allocation; |
9a799d71 AK |
2380 | |
2381 | adapter->rx_ring = kcalloc(adapter->num_rx_queues, | |
b4617240 | 2382 | sizeof(struct ixgbe_ring), GFP_KERNEL); |
021230d4 AV |
2383 | if (!adapter->rx_ring) |
2384 | goto err_rx_ring_allocation; | |
9a799d71 | 2385 | |
021230d4 | 2386 | for (i = 0; i < adapter->num_tx_queues; i++) { |
b9804972 | 2387 | adapter->tx_ring[i].count = adapter->tx_ring_count; |
021230d4 AV |
2388 | adapter->tx_ring[i].queue_index = i; |
2389 | } | |
b9804972 | 2390 | |
9a799d71 | 2391 | for (i = 0; i < adapter->num_rx_queues; i++) { |
b9804972 | 2392 | adapter->rx_ring[i].count = adapter->rx_ring_count; |
021230d4 AV |
2393 | adapter->rx_ring[i].queue_index = i; |
2394 | } | |
2395 | ||
2396 | ixgbe_cache_ring_register(adapter); | |
2397 | ||
2398 | return 0; | |
2399 | ||
2400 | err_rx_ring_allocation: | |
2401 | kfree(adapter->tx_ring); | |
2402 | err_tx_ring_allocation: | |
2403 | return -ENOMEM; | |
2404 | } | |
2405 | ||
2406 | /** | |
2407 | * ixgbe_set_interrupt_capability - set MSI-X or MSI if supported | |
2408 | * @adapter: board private structure to initialize | |
2409 | * | |
2410 | * Attempt to configure the interrupts using the best available | |
2411 | * capabilities of the hardware and the kernel. | |
2412 | **/ | |
2413 | static int __devinit ixgbe_set_interrupt_capability(struct ixgbe_adapter | |
b4617240 | 2414 | *adapter) |
021230d4 AV |
2415 | { |
2416 | int err = 0; | |
2417 | int vector, v_budget; | |
2418 | ||
2419 | /* | |
2420 | * It's easy to be greedy for MSI-X vectors, but it really | |
2421 | * doesn't do us much good if we have a lot more vectors | |
2422 | * than CPU's. So let's be conservative and only ask for | |
2423 | * (roughly) twice the number of vectors as there are CPU's. | |
2424 | */ | |
2425 | v_budget = min(adapter->num_rx_queues + adapter->num_tx_queues, | |
b4617240 | 2426 | (int)(num_online_cpus() * 2)) + NON_Q_VECTORS; |
021230d4 AV |
2427 | |
2428 | /* | |
2429 | * At the same time, hardware can only support a maximum of | |
2430 | * MAX_MSIX_COUNT vectors. With features such as RSS and VMDq, | |
2431 | * we can easily reach upwards of 64 Rx descriptor queues and | |
2432 | * 32 Tx queues. Thus, we cap it off in those rare cases where | |
2433 | * the cpu count also exceeds our vector limit. | |
2434 | */ | |
2435 | v_budget = min(v_budget, MAX_MSIX_COUNT); | |
2436 | ||
2437 | /* A failure in MSI-X entry allocation isn't fatal, but it does | |
2438 | * mean we disable MSI-X capabilities of the adapter. */ | |
2439 | adapter->msix_entries = kcalloc(v_budget, | |
b4617240 | 2440 | sizeof(struct msix_entry), GFP_KERNEL); |
021230d4 AV |
2441 | if (!adapter->msix_entries) { |
2442 | adapter->flags &= ~IXGBE_FLAG_RSS_ENABLED; | |
2443 | ixgbe_set_num_queues(adapter); | |
2444 | kfree(adapter->tx_ring); | |
2445 | kfree(adapter->rx_ring); | |
2446 | err = ixgbe_alloc_queues(adapter); | |
2447 | if (err) { | |
2448 | DPRINTK(PROBE, ERR, "Unable to allocate memory " | |
b4617240 | 2449 | "for queues\n"); |
021230d4 AV |
2450 | goto out; |
2451 | } | |
2452 | ||
2453 | goto try_msi; | |
2454 | } | |
2455 | ||
2456 | for (vector = 0; vector < v_budget; vector++) | |
2457 | adapter->msix_entries[vector].entry = vector; | |
2458 | ||
2459 | ixgbe_acquire_msix_vectors(adapter, v_budget); | |
2460 | ||
2461 | if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) | |
2462 | goto out; | |
2463 | ||
2464 | try_msi: | |
2465 | err = pci_enable_msi(adapter->pdev); | |
2466 | if (!err) { | |
2467 | adapter->flags |= IXGBE_FLAG_MSI_ENABLED; | |
2468 | } else { | |
2469 | DPRINTK(HW, DEBUG, "Unable to allocate MSI interrupt, " | |
b4617240 | 2470 | "falling back to legacy. Error: %d\n", err); |
021230d4 AV |
2471 | /* reset err */ |
2472 | err = 0; | |
2473 | } | |
2474 | ||
2475 | out: | |
30eba97a | 2476 | /* Notify the stack of the (possibly) reduced Tx Queue count. */ |
fd2ea0a7 | 2477 | adapter->netdev->real_num_tx_queues = adapter->num_tx_queues; |
021230d4 AV |
2478 | |
2479 | return err; | |
2480 | } | |
2481 | ||
2482 | static void ixgbe_reset_interrupt_capability(struct ixgbe_adapter *adapter) | |
2483 | { | |
2484 | if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) { | |
2485 | adapter->flags &= ~IXGBE_FLAG_MSIX_ENABLED; | |
2486 | pci_disable_msix(adapter->pdev); | |
2487 | kfree(adapter->msix_entries); | |
2488 | adapter->msix_entries = NULL; | |
2489 | } else if (adapter->flags & IXGBE_FLAG_MSI_ENABLED) { | |
2490 | adapter->flags &= ~IXGBE_FLAG_MSI_ENABLED; | |
2491 | pci_disable_msi(adapter->pdev); | |
2492 | } | |
2493 | return; | |
2494 | } | |
2495 | ||
2496 | /** | |
2497 | * ixgbe_init_interrupt_scheme - Determine proper interrupt scheme | |
2498 | * @adapter: board private structure to initialize | |
2499 | * | |
2500 | * We determine which interrupt scheme to use based on... | |
2501 | * - Kernel support (MSI, MSI-X) | |
2502 | * - which can be user-defined (via MODULE_PARAM) | |
2503 | * - Hardware queue count (num_*_queues) | |
2504 | * - defined by miscellaneous hardware support/features (RSS, etc.) | |
2505 | **/ | |
2506 | static int __devinit ixgbe_init_interrupt_scheme(struct ixgbe_adapter *adapter) | |
2507 | { | |
2508 | int err; | |
2509 | ||
2510 | /* Number of supported queues */ | |
2511 | ixgbe_set_num_queues(adapter); | |
2512 | ||
2513 | err = ixgbe_alloc_queues(adapter); | |
2514 | if (err) { | |
2515 | DPRINTK(PROBE, ERR, "Unable to allocate memory for queues\n"); | |
2516 | goto err_alloc_queues; | |
2517 | } | |
2518 | ||
2519 | err = ixgbe_set_interrupt_capability(adapter); | |
2520 | if (err) { | |
2521 | DPRINTK(PROBE, ERR, "Unable to setup interrupt capabilities\n"); | |
2522 | goto err_set_interrupt; | |
9a799d71 AK |
2523 | } |
2524 | ||
021230d4 | 2525 | DPRINTK(DRV, INFO, "Multiqueue %s: Rx Queue count = %u, " |
b4617240 PW |
2526 | "Tx Queue count = %u\n", |
2527 | (adapter->num_rx_queues > 1) ? "Enabled" : | |
2528 | "Disabled", adapter->num_rx_queues, adapter->num_tx_queues); | |
021230d4 AV |
2529 | |
2530 | set_bit(__IXGBE_DOWN, &adapter->state); | |
2531 | ||
9a799d71 | 2532 | return 0; |
021230d4 AV |
2533 | |
2534 | err_set_interrupt: | |
2535 | kfree(adapter->tx_ring); | |
2536 | kfree(adapter->rx_ring); | |
2537 | err_alloc_queues: | |
2538 | return err; | |
9a799d71 AK |
2539 | } |
2540 | ||
2541 | /** | |
2542 | * ixgbe_sw_init - Initialize general software structures (struct ixgbe_adapter) | |
2543 | * @adapter: board private structure to initialize | |
2544 | * | |
2545 | * ixgbe_sw_init initializes the Adapter private data structure. | |
2546 | * Fields are initialized based on PCI device information and | |
2547 | * OS network device settings (MTU size). | |
2548 | **/ | |
2549 | static int __devinit ixgbe_sw_init(struct ixgbe_adapter *adapter) | |
2550 | { | |
2551 | struct ixgbe_hw *hw = &adapter->hw; | |
2552 | struct pci_dev *pdev = adapter->pdev; | |
021230d4 AV |
2553 | unsigned int rss; |
2554 | ||
c44ade9e JB |
2555 | /* PCI config space info */ |
2556 | ||
2557 | hw->vendor_id = pdev->vendor; | |
2558 | hw->device_id = pdev->device; | |
2559 | hw->revision_id = pdev->revision; | |
2560 | hw->subsystem_vendor_id = pdev->subsystem_vendor; | |
2561 | hw->subsystem_device_id = pdev->subsystem_device; | |
2562 | ||
021230d4 AV |
2563 | /* Set capability flags */ |
2564 | rss = min(IXGBE_MAX_RSS_INDICES, (int)num_online_cpus()); | |
2565 | adapter->ring_feature[RING_F_RSS].indices = rss; | |
2566 | adapter->flags |= IXGBE_FLAG_RSS_ENABLED; | |
9a799d71 AK |
2567 | |
2568 | /* default flow control settings */ | |
2b9ade93 JB |
2569 | hw->fc.original_type = ixgbe_fc_none; |
2570 | hw->fc.type = ixgbe_fc_none; | |
2571 | hw->fc.high_water = IXGBE_DEFAULT_FCRTH; | |
2572 | hw->fc.low_water = IXGBE_DEFAULT_FCRTL; | |
2573 | hw->fc.pause_time = IXGBE_DEFAULT_FCPAUSE; | |
2574 | hw->fc.send_xon = true; | |
9a799d71 | 2575 | |
021230d4 | 2576 | /* select 10G link by default */ |
9a799d71 | 2577 | hw->mac.link_mode_select = IXGBE_AUTOC_LMS_10G_LINK_NO_AN; |
9a799d71 | 2578 | |
30efa5a3 JB |
2579 | /* enable itr by default in dynamic mode */ |
2580 | adapter->itr_setting = 1; | |
2581 | adapter->eitr_param = 20000; | |
2582 | ||
2583 | /* set defaults for eitr in MegaBytes */ | |
2584 | adapter->eitr_low = 10; | |
2585 | adapter->eitr_high = 20; | |
2586 | ||
2587 | /* set default ring sizes */ | |
2588 | adapter->tx_ring_count = IXGBE_DEFAULT_TXD; | |
2589 | adapter->rx_ring_count = IXGBE_DEFAULT_RXD; | |
2590 | ||
9a799d71 | 2591 | /* initialize eeprom parameters */ |
c44ade9e | 2592 | if (ixgbe_init_eeprom_params_generic(hw)) { |
9a799d71 AK |
2593 | dev_err(&pdev->dev, "EEPROM initialization failed\n"); |
2594 | return -EIO; | |
2595 | } | |
2596 | ||
021230d4 | 2597 | /* enable rx csum by default */ |
9a799d71 AK |
2598 | adapter->flags |= IXGBE_FLAG_RX_CSUM_ENABLED; |
2599 | ||
9a799d71 AK |
2600 | set_bit(__IXGBE_DOWN, &adapter->state); |
2601 | ||
2602 | return 0; | |
2603 | } | |
2604 | ||
2605 | /** | |
2606 | * ixgbe_setup_tx_resources - allocate Tx resources (Descriptors) | |
2607 | * @adapter: board private structure | |
3a581073 | 2608 | * @tx_ring: tx descriptor ring (for a specific queue) to setup |
9a799d71 AK |
2609 | * |
2610 | * Return 0 on success, negative on failure | |
2611 | **/ | |
2612 | int ixgbe_setup_tx_resources(struct ixgbe_adapter *adapter, | |
e01c31a5 | 2613 | struct ixgbe_ring *tx_ring) |
9a799d71 AK |
2614 | { |
2615 | struct pci_dev *pdev = adapter->pdev; | |
2616 | int size; | |
2617 | ||
3a581073 JB |
2618 | size = sizeof(struct ixgbe_tx_buffer) * tx_ring->count; |
2619 | tx_ring->tx_buffer_info = vmalloc(size); | |
e01c31a5 JB |
2620 | if (!tx_ring->tx_buffer_info) |
2621 | goto err; | |
3a581073 | 2622 | memset(tx_ring->tx_buffer_info, 0, size); |
9a799d71 AK |
2623 | |
2624 | /* round up to nearest 4K */ | |
e01c31a5 JB |
2625 | tx_ring->size = tx_ring->count * sizeof(union ixgbe_adv_tx_desc) + |
2626 | sizeof(u32); | |
3a581073 | 2627 | tx_ring->size = ALIGN(tx_ring->size, 4096); |
9a799d71 | 2628 | |
3a581073 JB |
2629 | tx_ring->desc = pci_alloc_consistent(pdev, tx_ring->size, |
2630 | &tx_ring->dma); | |
e01c31a5 JB |
2631 | if (!tx_ring->desc) |
2632 | goto err; | |
9a799d71 | 2633 | |
3a581073 JB |
2634 | tx_ring->next_to_use = 0; |
2635 | tx_ring->next_to_clean = 0; | |
2636 | tx_ring->work_limit = tx_ring->count; | |
9a799d71 | 2637 | return 0; |
e01c31a5 JB |
2638 | |
2639 | err: | |
2640 | vfree(tx_ring->tx_buffer_info); | |
2641 | tx_ring->tx_buffer_info = NULL; | |
2642 | DPRINTK(PROBE, ERR, "Unable to allocate memory for the transmit " | |
2643 | "descriptor ring\n"); | |
2644 | return -ENOMEM; | |
9a799d71 AK |
2645 | } |
2646 | ||
69888674 AD |
2647 | /** |
2648 | * ixgbe_setup_all_tx_resources - allocate all queues Tx resources | |
2649 | * @adapter: board private structure | |
2650 | * | |
2651 | * If this function returns with an error, then it's possible one or | |
2652 | * more of the rings is populated (while the rest are not). It is the | |
2653 | * callers duty to clean those orphaned rings. | |
2654 | * | |
2655 | * Return 0 on success, negative on failure | |
2656 | **/ | |
2657 | static int ixgbe_setup_all_tx_resources(struct ixgbe_adapter *adapter) | |
2658 | { | |
2659 | int i, err = 0; | |
2660 | ||
2661 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
2662 | err = ixgbe_setup_tx_resources(adapter, &adapter->tx_ring[i]); | |
2663 | if (!err) | |
2664 | continue; | |
2665 | DPRINTK(PROBE, ERR, "Allocation for Tx Queue %u failed\n", i); | |
2666 | break; | |
2667 | } | |
2668 | ||
2669 | return err; | |
2670 | } | |
2671 | ||
9a799d71 AK |
2672 | /** |
2673 | * ixgbe_setup_rx_resources - allocate Rx resources (Descriptors) | |
2674 | * @adapter: board private structure | |
3a581073 | 2675 | * @rx_ring: rx descriptor ring (for a specific queue) to setup |
9a799d71 AK |
2676 | * |
2677 | * Returns 0 on success, negative on failure | |
2678 | **/ | |
2679 | int ixgbe_setup_rx_resources(struct ixgbe_adapter *adapter, | |
b4617240 | 2680 | struct ixgbe_ring *rx_ring) |
9a799d71 AK |
2681 | { |
2682 | struct pci_dev *pdev = adapter->pdev; | |
021230d4 | 2683 | int size; |
9a799d71 | 2684 | |
177db6ff | 2685 | size = sizeof(struct net_lro_desc) * IXGBE_MAX_LRO_DESCRIPTORS; |
3a581073 JB |
2686 | rx_ring->lro_mgr.lro_arr = vmalloc(size); |
2687 | if (!rx_ring->lro_mgr.lro_arr) | |
177db6ff | 2688 | return -ENOMEM; |
3a581073 | 2689 | memset(rx_ring->lro_mgr.lro_arr, 0, size); |
177db6ff | 2690 | |
3a581073 JB |
2691 | size = sizeof(struct ixgbe_rx_buffer) * rx_ring->count; |
2692 | rx_ring->rx_buffer_info = vmalloc(size); | |
2693 | if (!rx_ring->rx_buffer_info) { | |
9a799d71 | 2694 | DPRINTK(PROBE, ERR, |
b4617240 | 2695 | "vmalloc allocation failed for the rx desc ring\n"); |
177db6ff | 2696 | goto alloc_failed; |
9a799d71 | 2697 | } |
3a581073 | 2698 | memset(rx_ring->rx_buffer_info, 0, size); |
9a799d71 | 2699 | |
9a799d71 | 2700 | /* Round up to nearest 4K */ |
3a581073 JB |
2701 | rx_ring->size = rx_ring->count * sizeof(union ixgbe_adv_rx_desc); |
2702 | rx_ring->size = ALIGN(rx_ring->size, 4096); | |
9a799d71 | 2703 | |
3a581073 | 2704 | rx_ring->desc = pci_alloc_consistent(pdev, rx_ring->size, &rx_ring->dma); |
9a799d71 | 2705 | |
3a581073 | 2706 | if (!rx_ring->desc) { |
9a799d71 | 2707 | DPRINTK(PROBE, ERR, |
b4617240 | 2708 | "Memory allocation failed for the rx desc ring\n"); |
3a581073 | 2709 | vfree(rx_ring->rx_buffer_info); |
177db6ff | 2710 | goto alloc_failed; |
9a799d71 AK |
2711 | } |
2712 | ||
3a581073 JB |
2713 | rx_ring->next_to_clean = 0; |
2714 | rx_ring->next_to_use = 0; | |
9a799d71 AK |
2715 | |
2716 | return 0; | |
177db6ff MC |
2717 | |
2718 | alloc_failed: | |
3a581073 JB |
2719 | vfree(rx_ring->lro_mgr.lro_arr); |
2720 | rx_ring->lro_mgr.lro_arr = NULL; | |
177db6ff | 2721 | return -ENOMEM; |
9a799d71 AK |
2722 | } |
2723 | ||
69888674 AD |
2724 | /** |
2725 | * ixgbe_setup_all_rx_resources - allocate all queues Rx resources | |
2726 | * @adapter: board private structure | |
2727 | * | |
2728 | * If this function returns with an error, then it's possible one or | |
2729 | * more of the rings is populated (while the rest are not). It is the | |
2730 | * callers duty to clean those orphaned rings. | |
2731 | * | |
2732 | * Return 0 on success, negative on failure | |
2733 | **/ | |
2734 | ||
2735 | static int ixgbe_setup_all_rx_resources(struct ixgbe_adapter *adapter) | |
2736 | { | |
2737 | int i, err = 0; | |
2738 | ||
2739 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
2740 | err = ixgbe_setup_rx_resources(adapter, &adapter->rx_ring[i]); | |
2741 | if (!err) | |
2742 | continue; | |
2743 | DPRINTK(PROBE, ERR, "Allocation for Rx Queue %u failed\n", i); | |
2744 | break; | |
2745 | } | |
2746 | ||
2747 | return err; | |
2748 | } | |
2749 | ||
9a799d71 AK |
2750 | /** |
2751 | * ixgbe_free_tx_resources - Free Tx Resources per Queue | |
2752 | * @adapter: board private structure | |
2753 | * @tx_ring: Tx descriptor ring for a specific queue | |
2754 | * | |
2755 | * Free all transmit software resources | |
2756 | **/ | |
c431f97e JB |
2757 | void ixgbe_free_tx_resources(struct ixgbe_adapter *adapter, |
2758 | struct ixgbe_ring *tx_ring) | |
9a799d71 AK |
2759 | { |
2760 | struct pci_dev *pdev = adapter->pdev; | |
2761 | ||
2762 | ixgbe_clean_tx_ring(adapter, tx_ring); | |
2763 | ||
2764 | vfree(tx_ring->tx_buffer_info); | |
2765 | tx_ring->tx_buffer_info = NULL; | |
2766 | ||
2767 | pci_free_consistent(pdev, tx_ring->size, tx_ring->desc, tx_ring->dma); | |
2768 | ||
2769 | tx_ring->desc = NULL; | |
2770 | } | |
2771 | ||
2772 | /** | |
2773 | * ixgbe_free_all_tx_resources - Free Tx Resources for All Queues | |
2774 | * @adapter: board private structure | |
2775 | * | |
2776 | * Free all transmit software resources | |
2777 | **/ | |
2778 | static void ixgbe_free_all_tx_resources(struct ixgbe_adapter *adapter) | |
2779 | { | |
2780 | int i; | |
2781 | ||
2782 | for (i = 0; i < adapter->num_tx_queues; i++) | |
2783 | ixgbe_free_tx_resources(adapter, &adapter->tx_ring[i]); | |
2784 | } | |
2785 | ||
2786 | /** | |
b4617240 | 2787 | * ixgbe_free_rx_resources - Free Rx Resources |
9a799d71 AK |
2788 | * @adapter: board private structure |
2789 | * @rx_ring: ring to clean the resources from | |
2790 | * | |
2791 | * Free all receive software resources | |
2792 | **/ | |
c431f97e JB |
2793 | void ixgbe_free_rx_resources(struct ixgbe_adapter *adapter, |
2794 | struct ixgbe_ring *rx_ring) | |
9a799d71 AK |
2795 | { |
2796 | struct pci_dev *pdev = adapter->pdev; | |
2797 | ||
177db6ff MC |
2798 | vfree(rx_ring->lro_mgr.lro_arr); |
2799 | rx_ring->lro_mgr.lro_arr = NULL; | |
2800 | ||
9a799d71 AK |
2801 | ixgbe_clean_rx_ring(adapter, rx_ring); |
2802 | ||
2803 | vfree(rx_ring->rx_buffer_info); | |
2804 | rx_ring->rx_buffer_info = NULL; | |
2805 | ||
2806 | pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma); | |
2807 | ||
2808 | rx_ring->desc = NULL; | |
2809 | } | |
2810 | ||
2811 | /** | |
2812 | * ixgbe_free_all_rx_resources - Free Rx Resources for All Queues | |
2813 | * @adapter: board private structure | |
2814 | * | |
2815 | * Free all receive software resources | |
2816 | **/ | |
2817 | static void ixgbe_free_all_rx_resources(struct ixgbe_adapter *adapter) | |
2818 | { | |
2819 | int i; | |
2820 | ||
2821 | for (i = 0; i < adapter->num_rx_queues; i++) | |
2822 | ixgbe_free_rx_resources(adapter, &adapter->rx_ring[i]); | |
2823 | } | |
2824 | ||
9a799d71 AK |
2825 | /** |
2826 | * ixgbe_change_mtu - Change the Maximum Transfer Unit | |
2827 | * @netdev: network interface device structure | |
2828 | * @new_mtu: new value for maximum frame size | |
2829 | * | |
2830 | * Returns 0 on success, negative on failure | |
2831 | **/ | |
2832 | static int ixgbe_change_mtu(struct net_device *netdev, int new_mtu) | |
2833 | { | |
2834 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
2835 | int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN; | |
2836 | ||
42c783c5 JB |
2837 | /* MTU < 68 is an error and causes problems on some kernels */ |
2838 | if ((new_mtu < 68) || (max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE)) | |
9a799d71 AK |
2839 | return -EINVAL; |
2840 | ||
021230d4 | 2841 | DPRINTK(PROBE, INFO, "changing MTU from %d to %d\n", |
b4617240 | 2842 | netdev->mtu, new_mtu); |
021230d4 | 2843 | /* must set new MTU before calling down or up */ |
9a799d71 AK |
2844 | netdev->mtu = new_mtu; |
2845 | ||
d4f80882 AV |
2846 | if (netif_running(netdev)) |
2847 | ixgbe_reinit_locked(adapter); | |
9a799d71 AK |
2848 | |
2849 | return 0; | |
2850 | } | |
2851 | ||
2852 | /** | |
2853 | * ixgbe_open - Called when a network interface is made active | |
2854 | * @netdev: network interface device structure | |
2855 | * | |
2856 | * Returns 0 on success, negative value on failure | |
2857 | * | |
2858 | * The open entry point is called when a network interface is made | |
2859 | * active by the system (IFF_UP). At this point all resources needed | |
2860 | * for transmit and receive operations are allocated, the interrupt | |
2861 | * handler is registered with the OS, the watchdog timer is started, | |
2862 | * and the stack is notified that the interface is ready. | |
2863 | **/ | |
2864 | static int ixgbe_open(struct net_device *netdev) | |
2865 | { | |
2866 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
2867 | int err; | |
4bebfaa5 AK |
2868 | |
2869 | /* disallow open during test */ | |
2870 | if (test_bit(__IXGBE_TESTING, &adapter->state)) | |
2871 | return -EBUSY; | |
9a799d71 | 2872 | |
9a799d71 AK |
2873 | /* allocate transmit descriptors */ |
2874 | err = ixgbe_setup_all_tx_resources(adapter); | |
2875 | if (err) | |
2876 | goto err_setup_tx; | |
2877 | ||
9a799d71 AK |
2878 | /* allocate receive descriptors */ |
2879 | err = ixgbe_setup_all_rx_resources(adapter); | |
2880 | if (err) | |
2881 | goto err_setup_rx; | |
2882 | ||
2883 | ixgbe_configure(adapter); | |
2884 | ||
021230d4 | 2885 | err = ixgbe_request_irq(adapter); |
9a799d71 AK |
2886 | if (err) |
2887 | goto err_req_irq; | |
2888 | ||
9a799d71 AK |
2889 | err = ixgbe_up_complete(adapter); |
2890 | if (err) | |
2891 | goto err_up; | |
2892 | ||
d55b53ff JK |
2893 | netif_tx_start_all_queues(netdev); |
2894 | ||
9a799d71 AK |
2895 | return 0; |
2896 | ||
2897 | err_up: | |
5eba3699 | 2898 | ixgbe_release_hw_control(adapter); |
9a799d71 AK |
2899 | ixgbe_free_irq(adapter); |
2900 | err_req_irq: | |
2901 | ixgbe_free_all_rx_resources(adapter); | |
2902 | err_setup_rx: | |
2903 | ixgbe_free_all_tx_resources(adapter); | |
2904 | err_setup_tx: | |
2905 | ixgbe_reset(adapter); | |
2906 | ||
2907 | return err; | |
2908 | } | |
2909 | ||
2910 | /** | |
2911 | * ixgbe_close - Disables a network interface | |
2912 | * @netdev: network interface device structure | |
2913 | * | |
2914 | * Returns 0, this is not allowed to fail | |
2915 | * | |
2916 | * The close entry point is called when an interface is de-activated | |
2917 | * by the OS. The hardware is still under the drivers control, but | |
2918 | * needs to be disabled. A global MAC reset is issued to stop the | |
2919 | * hardware, and all transmit and receive resources are freed. | |
2920 | **/ | |
2921 | static int ixgbe_close(struct net_device *netdev) | |
2922 | { | |
2923 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
9a799d71 AK |
2924 | |
2925 | ixgbe_down(adapter); | |
2926 | ixgbe_free_irq(adapter); | |
2927 | ||
2928 | ixgbe_free_all_tx_resources(adapter); | |
2929 | ixgbe_free_all_rx_resources(adapter); | |
2930 | ||
5eba3699 | 2931 | ixgbe_release_hw_control(adapter); |
9a799d71 AK |
2932 | |
2933 | return 0; | |
2934 | } | |
2935 | ||
b3c8b4ba AD |
2936 | /** |
2937 | * ixgbe_napi_add_all - prep napi structs for use | |
2938 | * @adapter: private struct | |
2939 | * helper function to napi_add each possible q_vector->napi | |
2940 | */ | |
2941 | static void ixgbe_napi_add_all(struct ixgbe_adapter *adapter) | |
2942 | { | |
2943 | int q_idx, q_vectors; | |
2944 | int (*poll)(struct napi_struct *, int); | |
2945 | ||
2946 | if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) { | |
2947 | poll = &ixgbe_clean_rxonly; | |
2948 | /* Only enable as many vectors as we have rx queues. */ | |
2949 | q_vectors = adapter->num_rx_queues; | |
2950 | } else { | |
2951 | poll = &ixgbe_poll; | |
2952 | /* only one q_vector for legacy modes */ | |
2953 | q_vectors = 1; | |
2954 | } | |
2955 | ||
2956 | for (q_idx = 0; q_idx < q_vectors; q_idx++) { | |
2957 | struct ixgbe_q_vector *q_vector = &adapter->q_vector[q_idx]; | |
2958 | netif_napi_add(adapter->netdev, &q_vector->napi, (*poll), 64); | |
2959 | } | |
2960 | } | |
2961 | ||
2962 | static void ixgbe_napi_del_all(struct ixgbe_adapter *adapter) | |
2963 | { | |
2964 | int q_idx; | |
2965 | int q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS; | |
2966 | ||
2967 | /* legacy and MSI only use one vector */ | |
2968 | if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED)) | |
2969 | q_vectors = 1; | |
2970 | ||
2971 | for (q_idx = 0; q_idx < q_vectors; q_idx++) { | |
2972 | struct ixgbe_q_vector *q_vector = &adapter->q_vector[q_idx]; | |
2973 | if (!q_vector->rxr_count) | |
2974 | continue; | |
2975 | netif_napi_del(&q_vector->napi); | |
2976 | } | |
2977 | } | |
2978 | ||
2979 | #ifdef CONFIG_PM | |
2980 | static int ixgbe_resume(struct pci_dev *pdev) | |
2981 | { | |
2982 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2983 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
2984 | u32 err; | |
2985 | ||
2986 | pci_set_power_state(pdev, PCI_D0); | |
2987 | pci_restore_state(pdev); | |
2988 | err = pci_enable_device(pdev); | |
2989 | if (err) { | |
69888674 | 2990 | printk(KERN_ERR "ixgbe: Cannot enable PCI device from " |
b3c8b4ba AD |
2991 | "suspend\n"); |
2992 | return err; | |
2993 | } | |
2994 | pci_set_master(pdev); | |
2995 | ||
2996 | pci_enable_wake(pdev, PCI_D3hot, 0); | |
2997 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
2998 | ||
2999 | err = ixgbe_init_interrupt_scheme(adapter); | |
3000 | if (err) { | |
3001 | printk(KERN_ERR "ixgbe: Cannot initialize interrupts for " | |
3002 | "device\n"); | |
3003 | return err; | |
3004 | } | |
3005 | ||
3006 | ixgbe_napi_add_all(adapter); | |
3007 | ixgbe_reset(adapter); | |
3008 | ||
3009 | if (netif_running(netdev)) { | |
3010 | err = ixgbe_open(adapter->netdev); | |
3011 | if (err) | |
3012 | return err; | |
3013 | } | |
3014 | ||
3015 | netif_device_attach(netdev); | |
3016 | ||
3017 | return 0; | |
3018 | } | |
3019 | ||
3020 | #endif /* CONFIG_PM */ | |
3021 | static int ixgbe_suspend(struct pci_dev *pdev, pm_message_t state) | |
3022 | { | |
3023 | struct net_device *netdev = pci_get_drvdata(pdev); | |
3024 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
3025 | #ifdef CONFIG_PM | |
3026 | int retval = 0; | |
3027 | #endif | |
3028 | ||
3029 | netif_device_detach(netdev); | |
3030 | ||
3031 | if (netif_running(netdev)) { | |
3032 | ixgbe_down(adapter); | |
3033 | ixgbe_free_irq(adapter); | |
3034 | ixgbe_free_all_tx_resources(adapter); | |
3035 | ixgbe_free_all_rx_resources(adapter); | |
3036 | } | |
3037 | ixgbe_reset_interrupt_capability(adapter); | |
3038 | ixgbe_napi_del_all(adapter); | |
3039 | kfree(adapter->tx_ring); | |
3040 | kfree(adapter->rx_ring); | |
3041 | ||
3042 | #ifdef CONFIG_PM | |
3043 | retval = pci_save_state(pdev); | |
3044 | if (retval) | |
3045 | return retval; | |
3046 | #endif | |
3047 | ||
3048 | pci_enable_wake(pdev, PCI_D3hot, 0); | |
3049 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
3050 | ||
3051 | ixgbe_release_hw_control(adapter); | |
3052 | ||
3053 | pci_disable_device(pdev); | |
3054 | ||
3055 | pci_set_power_state(pdev, pci_choose_state(pdev, state)); | |
3056 | ||
3057 | return 0; | |
3058 | } | |
3059 | ||
3060 | static void ixgbe_shutdown(struct pci_dev *pdev) | |
3061 | { | |
3062 | ixgbe_suspend(pdev, PMSG_SUSPEND); | |
3063 | } | |
3064 | ||
9a799d71 AK |
3065 | /** |
3066 | * ixgbe_update_stats - Update the board statistics counters. | |
3067 | * @adapter: board private structure | |
3068 | **/ | |
3069 | void ixgbe_update_stats(struct ixgbe_adapter *adapter) | |
3070 | { | |
3071 | struct ixgbe_hw *hw = &adapter->hw; | |
6f11eef7 AV |
3072 | u64 total_mpc = 0; |
3073 | u32 i, missed_rx = 0, mpc, bprc, lxon, lxoff, xon_off_tot; | |
9a799d71 AK |
3074 | |
3075 | adapter->stats.crcerrs += IXGBE_READ_REG(hw, IXGBE_CRCERRS); | |
6f11eef7 AV |
3076 | for (i = 0; i < 8; i++) { |
3077 | /* for packet buffers not used, the register should read 0 */ | |
3078 | mpc = IXGBE_READ_REG(hw, IXGBE_MPC(i)); | |
3079 | missed_rx += mpc; | |
3080 | adapter->stats.mpc[i] += mpc; | |
3081 | total_mpc += adapter->stats.mpc[i]; | |
3082 | adapter->stats.rnbc[i] += IXGBE_READ_REG(hw, IXGBE_RNBC(i)); | |
3083 | } | |
3084 | adapter->stats.gprc += IXGBE_READ_REG(hw, IXGBE_GPRC); | |
3085 | /* work around hardware counting issue */ | |
3086 | adapter->stats.gprc -= missed_rx; | |
3087 | ||
3088 | /* 82598 hardware only has a 32 bit counter in the high register */ | |
9a799d71 | 3089 | adapter->stats.gorc += IXGBE_READ_REG(hw, IXGBE_GORCH); |
6f11eef7 AV |
3090 | adapter->stats.gotc += IXGBE_READ_REG(hw, IXGBE_GOTCH); |
3091 | adapter->stats.tor += IXGBE_READ_REG(hw, IXGBE_TORH); | |
9a799d71 AK |
3092 | bprc = IXGBE_READ_REG(hw, IXGBE_BPRC); |
3093 | adapter->stats.bprc += bprc; | |
3094 | adapter->stats.mprc += IXGBE_READ_REG(hw, IXGBE_MPRC); | |
3095 | adapter->stats.mprc -= bprc; | |
3096 | adapter->stats.roc += IXGBE_READ_REG(hw, IXGBE_ROC); | |
3097 | adapter->stats.prc64 += IXGBE_READ_REG(hw, IXGBE_PRC64); | |
3098 | adapter->stats.prc127 += IXGBE_READ_REG(hw, IXGBE_PRC127); | |
3099 | adapter->stats.prc255 += IXGBE_READ_REG(hw, IXGBE_PRC255); | |
3100 | adapter->stats.prc511 += IXGBE_READ_REG(hw, IXGBE_PRC511); | |
3101 | adapter->stats.prc1023 += IXGBE_READ_REG(hw, IXGBE_PRC1023); | |
3102 | adapter->stats.prc1522 += IXGBE_READ_REG(hw, IXGBE_PRC1522); | |
9a799d71 AK |
3103 | adapter->stats.rlec += IXGBE_READ_REG(hw, IXGBE_RLEC); |
3104 | adapter->stats.lxonrxc += IXGBE_READ_REG(hw, IXGBE_LXONRXC); | |
9a799d71 | 3105 | adapter->stats.lxoffrxc += IXGBE_READ_REG(hw, IXGBE_LXOFFRXC); |
6f11eef7 AV |
3106 | lxon = IXGBE_READ_REG(hw, IXGBE_LXONTXC); |
3107 | adapter->stats.lxontxc += lxon; | |
3108 | lxoff = IXGBE_READ_REG(hw, IXGBE_LXOFFTXC); | |
3109 | adapter->stats.lxofftxc += lxoff; | |
9a799d71 AK |
3110 | adapter->stats.ruc += IXGBE_READ_REG(hw, IXGBE_RUC); |
3111 | adapter->stats.gptc += IXGBE_READ_REG(hw, IXGBE_GPTC); | |
6f11eef7 AV |
3112 | adapter->stats.mptc += IXGBE_READ_REG(hw, IXGBE_MPTC); |
3113 | /* | |
3114 | * 82598 errata - tx of flow control packets is included in tx counters | |
3115 | */ | |
3116 | xon_off_tot = lxon + lxoff; | |
3117 | adapter->stats.gptc -= xon_off_tot; | |
3118 | adapter->stats.mptc -= xon_off_tot; | |
3119 | adapter->stats.gotc -= (xon_off_tot * (ETH_ZLEN + ETH_FCS_LEN)); | |
9a799d71 AK |
3120 | adapter->stats.ruc += IXGBE_READ_REG(hw, IXGBE_RUC); |
3121 | adapter->stats.rfc += IXGBE_READ_REG(hw, IXGBE_RFC); | |
3122 | adapter->stats.rjc += IXGBE_READ_REG(hw, IXGBE_RJC); | |
9a799d71 AK |
3123 | adapter->stats.tpr += IXGBE_READ_REG(hw, IXGBE_TPR); |
3124 | adapter->stats.ptc64 += IXGBE_READ_REG(hw, IXGBE_PTC64); | |
6f11eef7 | 3125 | adapter->stats.ptc64 -= xon_off_tot; |
9a799d71 AK |
3126 | adapter->stats.ptc127 += IXGBE_READ_REG(hw, IXGBE_PTC127); |
3127 | adapter->stats.ptc255 += IXGBE_READ_REG(hw, IXGBE_PTC255); | |
3128 | adapter->stats.ptc511 += IXGBE_READ_REG(hw, IXGBE_PTC511); | |
3129 | adapter->stats.ptc1023 += IXGBE_READ_REG(hw, IXGBE_PTC1023); | |
3130 | adapter->stats.ptc1522 += IXGBE_READ_REG(hw, IXGBE_PTC1522); | |
9a799d71 AK |
3131 | adapter->stats.bptc += IXGBE_READ_REG(hw, IXGBE_BPTC); |
3132 | ||
3133 | /* Fill out the OS statistics structure */ | |
9a799d71 AK |
3134 | adapter->net_stats.multicast = adapter->stats.mprc; |
3135 | ||
3136 | /* Rx Errors */ | |
3137 | adapter->net_stats.rx_errors = adapter->stats.crcerrs + | |
b4617240 | 3138 | adapter->stats.rlec; |
9a799d71 AK |
3139 | adapter->net_stats.rx_dropped = 0; |
3140 | adapter->net_stats.rx_length_errors = adapter->stats.rlec; | |
3141 | adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs; | |
6f11eef7 | 3142 | adapter->net_stats.rx_missed_errors = total_mpc; |
9a799d71 AK |
3143 | } |
3144 | ||
3145 | /** | |
3146 | * ixgbe_watchdog - Timer Call-back | |
3147 | * @data: pointer to adapter cast into an unsigned long | |
3148 | **/ | |
3149 | static void ixgbe_watchdog(unsigned long data) | |
3150 | { | |
3151 | struct ixgbe_adapter *adapter = (struct ixgbe_adapter *)data; | |
cf8280ee JB |
3152 | struct ixgbe_hw *hw = &adapter->hw; |
3153 | ||
3154 | /* Do the watchdog outside of interrupt context due to the lovely | |
3155 | * delays that some of the newer hardware requires */ | |
3156 | if (!test_bit(__IXGBE_DOWN, &adapter->state)) { | |
3157 | /* Cause software interrupt to ensure rx rings are cleaned */ | |
3158 | if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) { | |
3159 | u32 eics = | |
3160 | (1 << (adapter->num_msix_vectors - NON_Q_VECTORS)) - 1; | |
3161 | IXGBE_WRITE_REG(hw, IXGBE_EICS, eics); | |
3162 | } else { | |
3163 | /* For legacy and MSI interrupts don't set any bits that | |
3164 | * are enabled for EIAM, because this operation would | |
3165 | * set *both* EIMS and EICS for any bit in EIAM */ | |
3166 | IXGBE_WRITE_REG(hw, IXGBE_EICS, | |
3167 | (IXGBE_EICS_TCP_TIMER | IXGBE_EICS_OTHER)); | |
3168 | } | |
3169 | /* Reset the timer */ | |
3170 | mod_timer(&adapter->watchdog_timer, | |
3171 | round_jiffies(jiffies + 2 * HZ)); | |
3172 | } | |
9a799d71 | 3173 | |
cf8280ee JB |
3174 | schedule_work(&adapter->watchdog_task); |
3175 | } | |
3176 | ||
3177 | /** | |
69888674 AD |
3178 | * ixgbe_watchdog_task - worker thread to bring link up |
3179 | * @work: pointer to work_struct containing our data | |
cf8280ee JB |
3180 | **/ |
3181 | static void ixgbe_watchdog_task(struct work_struct *work) | |
3182 | { | |
3183 | struct ixgbe_adapter *adapter = container_of(work, | |
3184 | struct ixgbe_adapter, | |
3185 | watchdog_task); | |
3186 | struct net_device *netdev = adapter->netdev; | |
3187 | struct ixgbe_hw *hw = &adapter->hw; | |
3188 | u32 link_speed = adapter->link_speed; | |
3189 | bool link_up = adapter->link_up; | |
3190 | ||
3191 | adapter->flags |= IXGBE_FLAG_IN_WATCHDOG_TASK; | |
3192 | ||
3193 | if (adapter->flags & IXGBE_FLAG_NEED_LINK_UPDATE) { | |
3194 | hw->mac.ops.check_link(hw, &link_speed, &link_up, false); | |
3195 | if (link_up || | |
3196 | time_after(jiffies, (adapter->link_check_timeout + | |
3197 | IXGBE_TRY_LINK_TIMEOUT))) { | |
3198 | IXGBE_WRITE_REG(hw, IXGBE_EIMS, IXGBE_EIMC_LSC); | |
3199 | adapter->flags &= ~IXGBE_FLAG_NEED_LINK_UPDATE; | |
3200 | } | |
3201 | adapter->link_up = link_up; | |
3202 | adapter->link_speed = link_speed; | |
3203 | } | |
9a799d71 AK |
3204 | |
3205 | if (link_up) { | |
3206 | if (!netif_carrier_ok(netdev)) { | |
cf8280ee JB |
3207 | u32 frctl = IXGBE_READ_REG(hw, IXGBE_FCTRL); |
3208 | u32 rmcs = IXGBE_READ_REG(hw, IXGBE_RMCS); | |
9a799d71 AK |
3209 | #define FLOW_RX (frctl & IXGBE_FCTRL_RFCE) |
3210 | #define FLOW_TX (rmcs & IXGBE_RMCS_TFCE_802_3X) | |
3211 | DPRINTK(LINK, INFO, "NIC Link is Up %s, " | |
cf8280ee JB |
3212 | "Flow Control: %s\n", |
3213 | (link_speed == IXGBE_LINK_SPEED_10GB_FULL ? | |
3214 | "10 Gbps" : | |
3215 | (link_speed == IXGBE_LINK_SPEED_1GB_FULL ? | |
3216 | "1 Gbps" : "unknown speed")), | |
3217 | ((FLOW_RX && FLOW_TX) ? "RX/TX" : | |
3218 | (FLOW_RX ? "RX" : | |
3219 | (FLOW_TX ? "TX" : "None")))); | |
9a799d71 AK |
3220 | |
3221 | netif_carrier_on(netdev); | |
fd2ea0a7 | 3222 | netif_tx_wake_all_queues(netdev); |
9a799d71 AK |
3223 | } else { |
3224 | /* Force detection of hung controller */ | |
3225 | adapter->detect_tx_hung = true; | |
3226 | } | |
3227 | } else { | |
cf8280ee JB |
3228 | adapter->link_up = false; |
3229 | adapter->link_speed = 0; | |
9a799d71 AK |
3230 | if (netif_carrier_ok(netdev)) { |
3231 | DPRINTK(LINK, INFO, "NIC Link is Down\n"); | |
3232 | netif_carrier_off(netdev); | |
fd2ea0a7 | 3233 | netif_tx_stop_all_queues(netdev); |
9a799d71 AK |
3234 | } |
3235 | } | |
3236 | ||
3237 | ixgbe_update_stats(adapter); | |
cf8280ee | 3238 | adapter->flags &= ~IXGBE_FLAG_IN_WATCHDOG_TASK; |
9a799d71 AK |
3239 | } |
3240 | ||
9a799d71 | 3241 | static int ixgbe_tso(struct ixgbe_adapter *adapter, |
b4617240 PW |
3242 | struct ixgbe_ring *tx_ring, struct sk_buff *skb, |
3243 | u32 tx_flags, u8 *hdr_len) | |
9a799d71 AK |
3244 | { |
3245 | struct ixgbe_adv_tx_context_desc *context_desc; | |
3246 | unsigned int i; | |
3247 | int err; | |
3248 | struct ixgbe_tx_buffer *tx_buffer_info; | |
9f8cdf4f JB |
3249 | u32 vlan_macip_lens = 0, type_tucmd_mlhl; |
3250 | u32 mss_l4len_idx, l4len; | |
9a799d71 AK |
3251 | |
3252 | if (skb_is_gso(skb)) { | |
3253 | if (skb_header_cloned(skb)) { | |
3254 | err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); | |
3255 | if (err) | |
3256 | return err; | |
3257 | } | |
3258 | l4len = tcp_hdrlen(skb); | |
3259 | *hdr_len += l4len; | |
3260 | ||
8327d000 | 3261 | if (skb->protocol == htons(ETH_P_IP)) { |
9a799d71 AK |
3262 | struct iphdr *iph = ip_hdr(skb); |
3263 | iph->tot_len = 0; | |
3264 | iph->check = 0; | |
3265 | tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, | |
b4617240 PW |
3266 | iph->daddr, 0, |
3267 | IPPROTO_TCP, | |
3268 | 0); | |
9a799d71 AK |
3269 | adapter->hw_tso_ctxt++; |
3270 | } else if (skb_shinfo(skb)->gso_type == SKB_GSO_TCPV6) { | |
3271 | ipv6_hdr(skb)->payload_len = 0; | |
3272 | tcp_hdr(skb)->check = | |
3273 | ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, | |
b4617240 PW |
3274 | &ipv6_hdr(skb)->daddr, |
3275 | 0, IPPROTO_TCP, 0); | |
9a799d71 AK |
3276 | adapter->hw_tso6_ctxt++; |
3277 | } | |
3278 | ||
3279 | i = tx_ring->next_to_use; | |
3280 | ||
3281 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; | |
3282 | context_desc = IXGBE_TX_CTXTDESC_ADV(*tx_ring, i); | |
3283 | ||
3284 | /* VLAN MACLEN IPLEN */ | |
3285 | if (tx_flags & IXGBE_TX_FLAGS_VLAN) | |
3286 | vlan_macip_lens |= | |
3287 | (tx_flags & IXGBE_TX_FLAGS_VLAN_MASK); | |
3288 | vlan_macip_lens |= ((skb_network_offset(skb)) << | |
b4617240 | 3289 | IXGBE_ADVTXD_MACLEN_SHIFT); |
9a799d71 AK |
3290 | *hdr_len += skb_network_offset(skb); |
3291 | vlan_macip_lens |= | |
3292 | (skb_transport_header(skb) - skb_network_header(skb)); | |
3293 | *hdr_len += | |
3294 | (skb_transport_header(skb) - skb_network_header(skb)); | |
3295 | context_desc->vlan_macip_lens = cpu_to_le32(vlan_macip_lens); | |
3296 | context_desc->seqnum_seed = 0; | |
3297 | ||
3298 | /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */ | |
9f8cdf4f | 3299 | type_tucmd_mlhl = (IXGBE_TXD_CMD_DEXT | |
b4617240 | 3300 | IXGBE_ADVTXD_DTYP_CTXT); |
9a799d71 | 3301 | |
8327d000 | 3302 | if (skb->protocol == htons(ETH_P_IP)) |
9a799d71 AK |
3303 | type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_IPV4; |
3304 | type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_L4T_TCP; | |
3305 | context_desc->type_tucmd_mlhl = cpu_to_le32(type_tucmd_mlhl); | |
3306 | ||
3307 | /* MSS L4LEN IDX */ | |
9f8cdf4f | 3308 | mss_l4len_idx = |
9a799d71 AK |
3309 | (skb_shinfo(skb)->gso_size << IXGBE_ADVTXD_MSS_SHIFT); |
3310 | mss_l4len_idx |= (l4len << IXGBE_ADVTXD_L4LEN_SHIFT); | |
4eeae6fd PW |
3311 | /* use index 1 for TSO */ |
3312 | mss_l4len_idx |= (1 << IXGBE_ADVTXD_IDX_SHIFT); | |
9a799d71 AK |
3313 | context_desc->mss_l4len_idx = cpu_to_le32(mss_l4len_idx); |
3314 | ||
3315 | tx_buffer_info->time_stamp = jiffies; | |
3316 | tx_buffer_info->next_to_watch = i; | |
3317 | ||
3318 | i++; | |
3319 | if (i == tx_ring->count) | |
3320 | i = 0; | |
3321 | tx_ring->next_to_use = i; | |
3322 | ||
3323 | return true; | |
3324 | } | |
3325 | return false; | |
3326 | } | |
3327 | ||
3328 | static bool ixgbe_tx_csum(struct ixgbe_adapter *adapter, | |
b4617240 PW |
3329 | struct ixgbe_ring *tx_ring, |
3330 | struct sk_buff *skb, u32 tx_flags) | |
9a799d71 AK |
3331 | { |
3332 | struct ixgbe_adv_tx_context_desc *context_desc; | |
3333 | unsigned int i; | |
3334 | struct ixgbe_tx_buffer *tx_buffer_info; | |
3335 | u32 vlan_macip_lens = 0, type_tucmd_mlhl = 0; | |
3336 | ||
3337 | if (skb->ip_summed == CHECKSUM_PARTIAL || | |
3338 | (tx_flags & IXGBE_TX_FLAGS_VLAN)) { | |
3339 | i = tx_ring->next_to_use; | |
3340 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; | |
3341 | context_desc = IXGBE_TX_CTXTDESC_ADV(*tx_ring, i); | |
3342 | ||
3343 | if (tx_flags & IXGBE_TX_FLAGS_VLAN) | |
3344 | vlan_macip_lens |= | |
3345 | (tx_flags & IXGBE_TX_FLAGS_VLAN_MASK); | |
3346 | vlan_macip_lens |= (skb_network_offset(skb) << | |
b4617240 | 3347 | IXGBE_ADVTXD_MACLEN_SHIFT); |
9a799d71 AK |
3348 | if (skb->ip_summed == CHECKSUM_PARTIAL) |
3349 | vlan_macip_lens |= (skb_transport_header(skb) - | |
b4617240 | 3350 | skb_network_header(skb)); |
9a799d71 AK |
3351 | |
3352 | context_desc->vlan_macip_lens = cpu_to_le32(vlan_macip_lens); | |
3353 | context_desc->seqnum_seed = 0; | |
3354 | ||
3355 | type_tucmd_mlhl |= (IXGBE_TXD_CMD_DEXT | | |
b4617240 | 3356 | IXGBE_ADVTXD_DTYP_CTXT); |
9a799d71 AK |
3357 | |
3358 | if (skb->ip_summed == CHECKSUM_PARTIAL) { | |
41825d71 AK |
3359 | switch (skb->protocol) { |
3360 | case __constant_htons(ETH_P_IP): | |
9a799d71 | 3361 | type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_IPV4; |
41825d71 AK |
3362 | if (ip_hdr(skb)->protocol == IPPROTO_TCP) |
3363 | type_tucmd_mlhl |= | |
b4617240 | 3364 | IXGBE_ADVTXD_TUCMD_L4T_TCP; |
41825d71 | 3365 | break; |
41825d71 AK |
3366 | case __constant_htons(ETH_P_IPV6): |
3367 | /* XXX what about other V6 headers?? */ | |
3368 | if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP) | |
3369 | type_tucmd_mlhl |= | |
b4617240 | 3370 | IXGBE_ADVTXD_TUCMD_L4T_TCP; |
41825d71 | 3371 | break; |
41825d71 AK |
3372 | default: |
3373 | if (unlikely(net_ratelimit())) { | |
3374 | DPRINTK(PROBE, WARNING, | |
3375 | "partial checksum but proto=%x!\n", | |
3376 | skb->protocol); | |
3377 | } | |
3378 | break; | |
3379 | } | |
9a799d71 AK |
3380 | } |
3381 | ||
3382 | context_desc->type_tucmd_mlhl = cpu_to_le32(type_tucmd_mlhl); | |
4eeae6fd | 3383 | /* use index zero for tx checksum offload */ |
9a799d71 AK |
3384 | context_desc->mss_l4len_idx = 0; |
3385 | ||
3386 | tx_buffer_info->time_stamp = jiffies; | |
3387 | tx_buffer_info->next_to_watch = i; | |
9f8cdf4f | 3388 | |
9a799d71 AK |
3389 | adapter->hw_csum_tx_good++; |
3390 | i++; | |
3391 | if (i == tx_ring->count) | |
3392 | i = 0; | |
3393 | tx_ring->next_to_use = i; | |
3394 | ||
3395 | return true; | |
3396 | } | |
9f8cdf4f | 3397 | |
9a799d71 AK |
3398 | return false; |
3399 | } | |
3400 | ||
3401 | static int ixgbe_tx_map(struct ixgbe_adapter *adapter, | |
b4617240 PW |
3402 | struct ixgbe_ring *tx_ring, |
3403 | struct sk_buff *skb, unsigned int first) | |
9a799d71 AK |
3404 | { |
3405 | struct ixgbe_tx_buffer *tx_buffer_info; | |
3406 | unsigned int len = skb->len; | |
3407 | unsigned int offset = 0, size, count = 0, i; | |
3408 | unsigned int nr_frags = skb_shinfo(skb)->nr_frags; | |
3409 | unsigned int f; | |
3410 | ||
3411 | len -= skb->data_len; | |
3412 | ||
3413 | i = tx_ring->next_to_use; | |
3414 | ||
3415 | while (len) { | |
3416 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; | |
3417 | size = min(len, (uint)IXGBE_MAX_DATA_PER_TXD); | |
3418 | ||
3419 | tx_buffer_info->length = size; | |
3420 | tx_buffer_info->dma = pci_map_single(adapter->pdev, | |
b4617240 PW |
3421 | skb->data + offset, |
3422 | size, PCI_DMA_TODEVICE); | |
9a799d71 AK |
3423 | tx_buffer_info->time_stamp = jiffies; |
3424 | tx_buffer_info->next_to_watch = i; | |
3425 | ||
3426 | len -= size; | |
3427 | offset += size; | |
3428 | count++; | |
3429 | i++; | |
3430 | if (i == tx_ring->count) | |
3431 | i = 0; | |
3432 | } | |
3433 | ||
3434 | for (f = 0; f < nr_frags; f++) { | |
3435 | struct skb_frag_struct *frag; | |
3436 | ||
3437 | frag = &skb_shinfo(skb)->frags[f]; | |
3438 | len = frag->size; | |
3439 | offset = frag->page_offset; | |
3440 | ||
3441 | while (len) { | |
3442 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; | |
3443 | size = min(len, (uint)IXGBE_MAX_DATA_PER_TXD); | |
3444 | ||
3445 | tx_buffer_info->length = size; | |
3446 | tx_buffer_info->dma = pci_map_page(adapter->pdev, | |
b4617240 PW |
3447 | frag->page, |
3448 | offset, | |
3449 | size, | |
3450 | PCI_DMA_TODEVICE); | |
9a799d71 AK |
3451 | tx_buffer_info->time_stamp = jiffies; |
3452 | tx_buffer_info->next_to_watch = i; | |
3453 | ||
3454 | len -= size; | |
3455 | offset += size; | |
3456 | count++; | |
3457 | i++; | |
3458 | if (i == tx_ring->count) | |
3459 | i = 0; | |
3460 | } | |
3461 | } | |
3462 | if (i == 0) | |
3463 | i = tx_ring->count - 1; | |
3464 | else | |
3465 | i = i - 1; | |
3466 | tx_ring->tx_buffer_info[i].skb = skb; | |
3467 | tx_ring->tx_buffer_info[first].next_to_watch = i; | |
3468 | ||
3469 | return count; | |
3470 | } | |
3471 | ||
3472 | static void ixgbe_tx_queue(struct ixgbe_adapter *adapter, | |
b4617240 PW |
3473 | struct ixgbe_ring *tx_ring, |
3474 | int tx_flags, int count, u32 paylen, u8 hdr_len) | |
9a799d71 AK |
3475 | { |
3476 | union ixgbe_adv_tx_desc *tx_desc = NULL; | |
3477 | struct ixgbe_tx_buffer *tx_buffer_info; | |
3478 | u32 olinfo_status = 0, cmd_type_len = 0; | |
3479 | unsigned int i; | |
3480 | u32 txd_cmd = IXGBE_TXD_CMD_EOP | IXGBE_TXD_CMD_RS | IXGBE_TXD_CMD_IFCS; | |
3481 | ||
3482 | cmd_type_len |= IXGBE_ADVTXD_DTYP_DATA; | |
3483 | ||
3484 | cmd_type_len |= IXGBE_ADVTXD_DCMD_IFCS | IXGBE_ADVTXD_DCMD_DEXT; | |
3485 | ||
3486 | if (tx_flags & IXGBE_TX_FLAGS_VLAN) | |
3487 | cmd_type_len |= IXGBE_ADVTXD_DCMD_VLE; | |
3488 | ||
3489 | if (tx_flags & IXGBE_TX_FLAGS_TSO) { | |
3490 | cmd_type_len |= IXGBE_ADVTXD_DCMD_TSE; | |
3491 | ||
3492 | olinfo_status |= IXGBE_TXD_POPTS_TXSM << | |
b4617240 | 3493 | IXGBE_ADVTXD_POPTS_SHIFT; |
9a799d71 | 3494 | |
4eeae6fd PW |
3495 | /* use index 1 context for tso */ |
3496 | olinfo_status |= (1 << IXGBE_ADVTXD_IDX_SHIFT); | |
9a799d71 AK |
3497 | if (tx_flags & IXGBE_TX_FLAGS_IPV4) |
3498 | olinfo_status |= IXGBE_TXD_POPTS_IXSM << | |
b4617240 | 3499 | IXGBE_ADVTXD_POPTS_SHIFT; |
9a799d71 AK |
3500 | |
3501 | } else if (tx_flags & IXGBE_TX_FLAGS_CSUM) | |
3502 | olinfo_status |= IXGBE_TXD_POPTS_TXSM << | |
b4617240 | 3503 | IXGBE_ADVTXD_POPTS_SHIFT; |
9a799d71 AK |
3504 | |
3505 | olinfo_status |= ((paylen - hdr_len) << IXGBE_ADVTXD_PAYLEN_SHIFT); | |
3506 | ||
3507 | i = tx_ring->next_to_use; | |
3508 | while (count--) { | |
3509 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; | |
3510 | tx_desc = IXGBE_TX_DESC_ADV(*tx_ring, i); | |
3511 | tx_desc->read.buffer_addr = cpu_to_le64(tx_buffer_info->dma); | |
3512 | tx_desc->read.cmd_type_len = | |
b4617240 | 3513 | cpu_to_le32(cmd_type_len | tx_buffer_info->length); |
9a799d71 | 3514 | tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status); |
9a799d71 AK |
3515 | i++; |
3516 | if (i == tx_ring->count) | |
3517 | i = 0; | |
3518 | } | |
3519 | ||
3520 | tx_desc->read.cmd_type_len |= cpu_to_le32(txd_cmd); | |
3521 | ||
3522 | /* | |
3523 | * Force memory writes to complete before letting h/w | |
3524 | * know there are new descriptors to fetch. (Only | |
3525 | * applicable for weak-ordered memory model archs, | |
3526 | * such as IA-64). | |
3527 | */ | |
3528 | wmb(); | |
3529 | ||
3530 | tx_ring->next_to_use = i; | |
3531 | writel(i, adapter->hw.hw_addr + tx_ring->tail); | |
3532 | } | |
3533 | ||
e092be60 | 3534 | static int __ixgbe_maybe_stop_tx(struct net_device *netdev, |
b4617240 | 3535 | struct ixgbe_ring *tx_ring, int size) |
e092be60 AV |
3536 | { |
3537 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
3538 | ||
30eba97a | 3539 | netif_stop_subqueue(netdev, tx_ring->queue_index); |
e092be60 AV |
3540 | /* Herbert's original patch had: |
3541 | * smp_mb__after_netif_stop_queue(); | |
3542 | * but since that doesn't exist yet, just open code it. */ | |
3543 | smp_mb(); | |
3544 | ||
3545 | /* We need to check again in a case another CPU has just | |
3546 | * made room available. */ | |
3547 | if (likely(IXGBE_DESC_UNUSED(tx_ring) < size)) | |
3548 | return -EBUSY; | |
3549 | ||
3550 | /* A reprieve! - use start_queue because it doesn't call schedule */ | |
af72166f | 3551 | netif_start_subqueue(netdev, tx_ring->queue_index); |
e092be60 AV |
3552 | ++adapter->restart_queue; |
3553 | return 0; | |
3554 | } | |
3555 | ||
3556 | static int ixgbe_maybe_stop_tx(struct net_device *netdev, | |
b4617240 | 3557 | struct ixgbe_ring *tx_ring, int size) |
e092be60 AV |
3558 | { |
3559 | if (likely(IXGBE_DESC_UNUSED(tx_ring) >= size)) | |
3560 | return 0; | |
3561 | return __ixgbe_maybe_stop_tx(netdev, tx_ring, size); | |
3562 | } | |
3563 | ||
9a799d71 AK |
3564 | static int ixgbe_xmit_frame(struct sk_buff *skb, struct net_device *netdev) |
3565 | { | |
3566 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
3567 | struct ixgbe_ring *tx_ring; | |
9a799d71 AK |
3568 | unsigned int first; |
3569 | unsigned int tx_flags = 0; | |
30eba97a AV |
3570 | u8 hdr_len = 0; |
3571 | int r_idx = 0, tso; | |
9a799d71 AK |
3572 | int count = 0; |
3573 | unsigned int f; | |
9f8cdf4f | 3574 | |
30eba97a | 3575 | r_idx = (adapter->num_tx_queues - 1) & skb->queue_mapping; |
30eba97a | 3576 | tx_ring = &adapter->tx_ring[r_idx]; |
9a799d71 | 3577 | |
9f8cdf4f JB |
3578 | if (adapter->vlgrp && vlan_tx_tag_present(skb)) { |
3579 | tx_flags |= vlan_tx_tag_get(skb); | |
3580 | tx_flags <<= IXGBE_TX_FLAGS_VLAN_SHIFT; | |
3581 | tx_flags |= IXGBE_TX_FLAGS_VLAN; | |
9a799d71 | 3582 | } |
9f8cdf4f JB |
3583 | /* three things can cause us to need a context descriptor */ |
3584 | if (skb_is_gso(skb) || | |
3585 | (skb->ip_summed == CHECKSUM_PARTIAL) || | |
3586 | (tx_flags & IXGBE_TX_FLAGS_VLAN)) | |
9a799d71 AK |
3587 | count++; |
3588 | ||
9f8cdf4f JB |
3589 | count += TXD_USE_COUNT(skb_headlen(skb)); |
3590 | for (f = 0; f < skb_shinfo(skb)->nr_frags; f++) | |
9a799d71 AK |
3591 | count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size); |
3592 | ||
e092be60 | 3593 | if (ixgbe_maybe_stop_tx(netdev, tx_ring, count)) { |
9a799d71 | 3594 | adapter->tx_busy++; |
9a799d71 AK |
3595 | return NETDEV_TX_BUSY; |
3596 | } | |
9a799d71 | 3597 | |
8327d000 | 3598 | if (skb->protocol == htons(ETH_P_IP)) |
9a799d71 AK |
3599 | tx_flags |= IXGBE_TX_FLAGS_IPV4; |
3600 | first = tx_ring->next_to_use; | |
3601 | tso = ixgbe_tso(adapter, tx_ring, skb, tx_flags, &hdr_len); | |
3602 | if (tso < 0) { | |
3603 | dev_kfree_skb_any(skb); | |
3604 | return NETDEV_TX_OK; | |
3605 | } | |
3606 | ||
3607 | if (tso) | |
3608 | tx_flags |= IXGBE_TX_FLAGS_TSO; | |
3609 | else if (ixgbe_tx_csum(adapter, tx_ring, skb, tx_flags) && | |
b4617240 | 3610 | (skb->ip_summed == CHECKSUM_PARTIAL)) |
9a799d71 AK |
3611 | tx_flags |= IXGBE_TX_FLAGS_CSUM; |
3612 | ||
3613 | ixgbe_tx_queue(adapter, tx_ring, tx_flags, | |
b4617240 PW |
3614 | ixgbe_tx_map(adapter, tx_ring, skb, first), |
3615 | skb->len, hdr_len); | |
9a799d71 AK |
3616 | |
3617 | netdev->trans_start = jiffies; | |
3618 | ||
e092be60 | 3619 | ixgbe_maybe_stop_tx(netdev, tx_ring, DESC_NEEDED); |
9a799d71 AK |
3620 | |
3621 | return NETDEV_TX_OK; | |
3622 | } | |
3623 | ||
3624 | /** | |
3625 | * ixgbe_get_stats - Get System Network Statistics | |
3626 | * @netdev: network interface device structure | |
3627 | * | |
3628 | * Returns the address of the device statistics structure. | |
3629 | * The statistics are actually updated from the timer callback. | |
3630 | **/ | |
3631 | static struct net_device_stats *ixgbe_get_stats(struct net_device *netdev) | |
3632 | { | |
3633 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
3634 | ||
3635 | /* only return the current stats */ | |
3636 | return &adapter->net_stats; | |
3637 | } | |
3638 | ||
3639 | /** | |
3640 | * ixgbe_set_mac - Change the Ethernet Address of the NIC | |
3641 | * @netdev: network interface device structure | |
3642 | * @p: pointer to an address structure | |
3643 | * | |
3644 | * Returns 0 on success, negative on failure | |
3645 | **/ | |
3646 | static int ixgbe_set_mac(struct net_device *netdev, void *p) | |
3647 | { | |
3648 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
b4617240 | 3649 | struct ixgbe_hw *hw = &adapter->hw; |
9a799d71 AK |
3650 | struct sockaddr *addr = p; |
3651 | ||
3652 | if (!is_valid_ether_addr(addr->sa_data)) | |
3653 | return -EADDRNOTAVAIL; | |
3654 | ||
3655 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
b4617240 | 3656 | memcpy(hw->mac.addr, addr->sa_data, netdev->addr_len); |
9a799d71 | 3657 | |
b4617240 | 3658 | hw->mac.ops.set_rar(hw, 0, hw->mac.addr, 0, IXGBE_RAH_AV); |
9a799d71 AK |
3659 | |
3660 | return 0; | |
3661 | } | |
3662 | ||
3663 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
3664 | /* | |
3665 | * Polling 'interrupt' - used by things like netconsole to send skbs | |
3666 | * without having to re-enable interrupts. It's not called while | |
3667 | * the interrupt routine is executing. | |
3668 | */ | |
3669 | static void ixgbe_netpoll(struct net_device *netdev) | |
3670 | { | |
3671 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
3672 | ||
3673 | disable_irq(adapter->pdev->irq); | |
3674 | adapter->flags |= IXGBE_FLAG_IN_NETPOLL; | |
3675 | ixgbe_intr(adapter->pdev->irq, netdev); | |
3676 | adapter->flags &= ~IXGBE_FLAG_IN_NETPOLL; | |
3677 | enable_irq(adapter->pdev->irq); | |
3678 | } | |
3679 | #endif | |
3680 | ||
c44ade9e JB |
3681 | /** |
3682 | * ixgbe_link_config - set up initial link with default speed and duplex | |
3683 | * @hw: pointer to private hardware struct | |
3684 | * | |
3685 | * Returns 0 on success, negative on failure | |
3686 | **/ | |
3687 | static int ixgbe_link_config(struct ixgbe_hw *hw) | |
3688 | { | |
3689 | u32 autoneg = IXGBE_LINK_SPEED_10GB_FULL; | |
3690 | ||
3691 | /* must always autoneg for both 1G and 10G link */ | |
3692 | hw->mac.autoneg = true; | |
3693 | ||
3694 | return hw->mac.ops.setup_link_speed(hw, autoneg, true, true); | |
3695 | } | |
3696 | ||
9a799d71 AK |
3697 | /** |
3698 | * ixgbe_probe - Device Initialization Routine | |
3699 | * @pdev: PCI device information struct | |
3700 | * @ent: entry in ixgbe_pci_tbl | |
3701 | * | |
3702 | * Returns 0 on success, negative on failure | |
3703 | * | |
3704 | * ixgbe_probe initializes an adapter identified by a pci_dev structure. | |
3705 | * The OS initialization, configuring of the adapter private structure, | |
3706 | * and a hardware reset occur. | |
3707 | **/ | |
3708 | static int __devinit ixgbe_probe(struct pci_dev *pdev, | |
b4617240 | 3709 | const struct pci_device_id *ent) |
9a799d71 AK |
3710 | { |
3711 | struct net_device *netdev; | |
3712 | struct ixgbe_adapter *adapter = NULL; | |
3713 | struct ixgbe_hw *hw; | |
3714 | const struct ixgbe_info *ii = ixgbe_info_tbl[ent->driver_data]; | |
9a799d71 AK |
3715 | static int cards_found; |
3716 | int i, err, pci_using_dac; | |
3717 | u16 link_status, link_speed, link_width; | |
c44ade9e | 3718 | u32 part_num, eec; |
9a799d71 AK |
3719 | |
3720 | err = pci_enable_device(pdev); | |
3721 | if (err) | |
3722 | return err; | |
3723 | ||
3724 | if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK) && | |
3725 | !pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK)) { | |
3726 | pci_using_dac = 1; | |
3727 | } else { | |
3728 | err = pci_set_dma_mask(pdev, DMA_32BIT_MASK); | |
3729 | if (err) { | |
3730 | err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK); | |
3731 | if (err) { | |
b4617240 PW |
3732 | dev_err(&pdev->dev, "No usable DMA " |
3733 | "configuration, aborting\n"); | |
9a799d71 AK |
3734 | goto err_dma; |
3735 | } | |
3736 | } | |
3737 | pci_using_dac = 0; | |
3738 | } | |
3739 | ||
3740 | err = pci_request_regions(pdev, ixgbe_driver_name); | |
3741 | if (err) { | |
3742 | dev_err(&pdev->dev, "pci_request_regions failed 0x%x\n", err); | |
3743 | goto err_pci_reg; | |
3744 | } | |
3745 | ||
3746 | pci_set_master(pdev); | |
fb3b27bc | 3747 | pci_save_state(pdev); |
9a799d71 | 3748 | |
30eba97a | 3749 | netdev = alloc_etherdev_mq(sizeof(struct ixgbe_adapter), MAX_TX_QUEUES); |
9a799d71 AK |
3750 | if (!netdev) { |
3751 | err = -ENOMEM; | |
3752 | goto err_alloc_etherdev; | |
3753 | } | |
3754 | ||
9a799d71 AK |
3755 | SET_NETDEV_DEV(netdev, &pdev->dev); |
3756 | ||
3757 | pci_set_drvdata(pdev, netdev); | |
3758 | adapter = netdev_priv(netdev); | |
3759 | ||
3760 | adapter->netdev = netdev; | |
3761 | adapter->pdev = pdev; | |
3762 | hw = &adapter->hw; | |
3763 | hw->back = adapter; | |
3764 | adapter->msg_enable = (1 << DEFAULT_DEBUG_LEVEL_SHIFT) - 1; | |
3765 | ||
05857980 JK |
3766 | hw->hw_addr = ioremap(pci_resource_start(pdev, 0), |
3767 | pci_resource_len(pdev, 0)); | |
9a799d71 AK |
3768 | if (!hw->hw_addr) { |
3769 | err = -EIO; | |
3770 | goto err_ioremap; | |
3771 | } | |
3772 | ||
3773 | for (i = 1; i <= 5; i++) { | |
3774 | if (pci_resource_len(pdev, i) == 0) | |
3775 | continue; | |
3776 | } | |
3777 | ||
3778 | netdev->open = &ixgbe_open; | |
3779 | netdev->stop = &ixgbe_close; | |
3780 | netdev->hard_start_xmit = &ixgbe_xmit_frame; | |
3781 | netdev->get_stats = &ixgbe_get_stats; | |
2c5645cf CL |
3782 | netdev->set_rx_mode = &ixgbe_set_rx_mode; |
3783 | netdev->set_multicast_list = &ixgbe_set_rx_mode; | |
9a799d71 AK |
3784 | netdev->set_mac_address = &ixgbe_set_mac; |
3785 | netdev->change_mtu = &ixgbe_change_mtu; | |
3786 | ixgbe_set_ethtool_ops(netdev); | |
3787 | netdev->tx_timeout = &ixgbe_tx_timeout; | |
3788 | netdev->watchdog_timeo = 5 * HZ; | |
9a799d71 AK |
3789 | netdev->vlan_rx_register = ixgbe_vlan_rx_register; |
3790 | netdev->vlan_rx_add_vid = ixgbe_vlan_rx_add_vid; | |
3791 | netdev->vlan_rx_kill_vid = ixgbe_vlan_rx_kill_vid; | |
3792 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
3793 | netdev->poll_controller = ixgbe_netpoll; | |
3794 | #endif | |
3795 | strcpy(netdev->name, pci_name(pdev)); | |
3796 | ||
9a799d71 AK |
3797 | adapter->bd_number = cards_found; |
3798 | ||
9a799d71 AK |
3799 | /* Setup hw api */ |
3800 | memcpy(&hw->mac.ops, ii->mac_ops, sizeof(hw->mac.ops)); | |
021230d4 | 3801 | hw->mac.type = ii->mac; |
9a799d71 | 3802 | |
c44ade9e JB |
3803 | /* EEPROM */ |
3804 | memcpy(&hw->eeprom.ops, ii->eeprom_ops, sizeof(hw->eeprom.ops)); | |
3805 | eec = IXGBE_READ_REG(hw, IXGBE_EEC); | |
3806 | /* If EEPROM is valid (bit 8 = 1), use default otherwise use bit bang */ | |
3807 | if (!(eec & (1 << 8))) | |
3808 | hw->eeprom.ops.read = &ixgbe_read_eeprom_bit_bang_generic; | |
3809 | ||
3810 | /* PHY */ | |
3811 | memcpy(&hw->phy.ops, ii->phy_ops, sizeof(hw->phy.ops)); | |
3812 | /* phy->sfp_type = ixgbe_sfp_type_unknown; */ | |
3813 | ||
9a799d71 AK |
3814 | err = ii->get_invariants(hw); |
3815 | if (err) | |
3816 | goto err_hw_init; | |
3817 | ||
3818 | /* setup the private structure */ | |
3819 | err = ixgbe_sw_init(adapter); | |
3820 | if (err) | |
3821 | goto err_sw_init; | |
3822 | ||
c44ade9e JB |
3823 | /* reset_hw fills in the perm_addr as well */ |
3824 | err = hw->mac.ops.reset_hw(hw); | |
3825 | if (err) { | |
3826 | dev_err(&adapter->pdev->dev, "HW Init failed: %d\n", err); | |
3827 | goto err_sw_init; | |
3828 | } | |
3829 | ||
9a799d71 | 3830 | netdev->features = NETIF_F_SG | |
b4617240 PW |
3831 | NETIF_F_IP_CSUM | |
3832 | NETIF_F_HW_VLAN_TX | | |
3833 | NETIF_F_HW_VLAN_RX | | |
3834 | NETIF_F_HW_VLAN_FILTER; | |
9a799d71 | 3835 | |
e9990a9c | 3836 | netdev->features |= NETIF_F_IPV6_CSUM; |
9a799d71 | 3837 | netdev->features |= NETIF_F_TSO; |
9a799d71 | 3838 | netdev->features |= NETIF_F_TSO6; |
e9990a9c | 3839 | netdev->features |= NETIF_F_LRO; |
ad31c402 JK |
3840 | |
3841 | netdev->vlan_features |= NETIF_F_TSO; | |
3842 | netdev->vlan_features |= NETIF_F_TSO6; | |
22f32b7a | 3843 | netdev->vlan_features |= NETIF_F_IP_CSUM; |
ad31c402 JK |
3844 | netdev->vlan_features |= NETIF_F_SG; |
3845 | ||
9a799d71 AK |
3846 | if (pci_using_dac) |
3847 | netdev->features |= NETIF_F_HIGHDMA; | |
3848 | ||
9a799d71 | 3849 | /* make sure the EEPROM is good */ |
c44ade9e | 3850 | if (hw->eeprom.ops.validate_checksum(hw, NULL) < 0) { |
9a799d71 AK |
3851 | dev_err(&pdev->dev, "The EEPROM Checksum Is Not Valid\n"); |
3852 | err = -EIO; | |
3853 | goto err_eeprom; | |
3854 | } | |
3855 | ||
3856 | memcpy(netdev->dev_addr, hw->mac.perm_addr, netdev->addr_len); | |
3857 | memcpy(netdev->perm_addr, hw->mac.perm_addr, netdev->addr_len); | |
3858 | ||
c44ade9e JB |
3859 | if (ixgbe_validate_mac_addr(netdev->perm_addr)) { |
3860 | dev_err(&pdev->dev, "invalid MAC address\n"); | |
9a799d71 AK |
3861 | err = -EIO; |
3862 | goto err_eeprom; | |
3863 | } | |
3864 | ||
3865 | init_timer(&adapter->watchdog_timer); | |
3866 | adapter->watchdog_timer.function = &ixgbe_watchdog; | |
3867 | adapter->watchdog_timer.data = (unsigned long)adapter; | |
3868 | ||
3869 | INIT_WORK(&adapter->reset_task, ixgbe_reset_task); | |
cf8280ee | 3870 | INIT_WORK(&adapter->watchdog_task, ixgbe_watchdog_task); |
9a799d71 | 3871 | |
021230d4 AV |
3872 | err = ixgbe_init_interrupt_scheme(adapter); |
3873 | if (err) | |
3874 | goto err_sw_init; | |
9a799d71 AK |
3875 | |
3876 | /* print bus type/speed/width info */ | |
3877 | pci_read_config_word(pdev, IXGBE_PCI_LINK_STATUS, &link_status); | |
3878 | link_speed = link_status & IXGBE_PCI_LINK_SPEED; | |
3879 | link_width = link_status & IXGBE_PCI_LINK_WIDTH; | |
7c510e4b | 3880 | dev_info(&pdev->dev, "(PCI Express:%s:%s) %pM\n", |
b4617240 PW |
3881 | ((link_speed == IXGBE_PCI_LINK_SPEED_5000) ? "5.0Gb/s" : |
3882 | (link_speed == IXGBE_PCI_LINK_SPEED_2500) ? "2.5Gb/s" : | |
3883 | "Unknown"), | |
3884 | ((link_width == IXGBE_PCI_LINK_WIDTH_8) ? "Width x8" : | |
3885 | (link_width == IXGBE_PCI_LINK_WIDTH_4) ? "Width x4" : | |
3886 | (link_width == IXGBE_PCI_LINK_WIDTH_2) ? "Width x2" : | |
3887 | (link_width == IXGBE_PCI_LINK_WIDTH_1) ? "Width x1" : | |
3888 | "Unknown"), | |
7c510e4b | 3889 | netdev->dev_addr); |
c44ade9e | 3890 | ixgbe_read_pba_num_generic(hw, &part_num); |
9a799d71 | 3891 | dev_info(&pdev->dev, "MAC: %d, PHY: %d, PBA No: %06x-%03x\n", |
b4617240 PW |
3892 | hw->mac.type, hw->phy.type, |
3893 | (part_num >> 8), (part_num & 0xff)); | |
9a799d71 | 3894 | |
0c254d86 AK |
3895 | if (link_width <= IXGBE_PCI_LINK_WIDTH_4) { |
3896 | dev_warn(&pdev->dev, "PCI-Express bandwidth available for " | |
b4617240 PW |
3897 | "this card is not sufficient for optimal " |
3898 | "performance.\n"); | |
0c254d86 | 3899 | dev_warn(&pdev->dev, "For optimal performance a x8 " |
b4617240 | 3900 | "PCI-Express slot is required.\n"); |
0c254d86 AK |
3901 | } |
3902 | ||
9a799d71 | 3903 | /* reset the hardware with the new settings */ |
c44ade9e JB |
3904 | hw->mac.ops.start_hw(hw); |
3905 | ||
3906 | /* link_config depends on start_hw being called at least once */ | |
3907 | err = ixgbe_link_config(hw); | |
3908 | if (err) { | |
3909 | dev_err(&pdev->dev, "setup_link_speed FAILED %d\n", err); | |
3910 | goto err_register; | |
3911 | } | |
9a799d71 AK |
3912 | |
3913 | netif_carrier_off(netdev); | |
fd2ea0a7 | 3914 | netif_tx_stop_all_queues(netdev); |
9a799d71 | 3915 | |
021230d4 AV |
3916 | ixgbe_napi_add_all(adapter); |
3917 | ||
9a799d71 AK |
3918 | strcpy(netdev->name, "eth%d"); |
3919 | err = register_netdev(netdev); | |
3920 | if (err) | |
3921 | goto err_register; | |
3922 | ||
5dd2d332 | 3923 | #ifdef CONFIG_IXGBE_DCA |
652f093f | 3924 | if (dca_add_requester(&pdev->dev) == 0) { |
bd0362dd JC |
3925 | adapter->flags |= IXGBE_FLAG_DCA_ENABLED; |
3926 | /* always use CB2 mode, difference is masked | |
3927 | * in the CB driver */ | |
3928 | IXGBE_WRITE_REG(hw, IXGBE_DCA_CTRL, 2); | |
3929 | ixgbe_setup_dca(adapter); | |
3930 | } | |
3931 | #endif | |
9a799d71 AK |
3932 | |
3933 | dev_info(&pdev->dev, "Intel(R) 10 Gigabit Network Connection\n"); | |
3934 | cards_found++; | |
3935 | return 0; | |
3936 | ||
3937 | err_register: | |
5eba3699 | 3938 | ixgbe_release_hw_control(adapter); |
9a799d71 AK |
3939 | err_hw_init: |
3940 | err_sw_init: | |
021230d4 | 3941 | ixgbe_reset_interrupt_capability(adapter); |
9a799d71 AK |
3942 | err_eeprom: |
3943 | iounmap(hw->hw_addr); | |
3944 | err_ioremap: | |
3945 | free_netdev(netdev); | |
3946 | err_alloc_etherdev: | |
3947 | pci_release_regions(pdev); | |
3948 | err_pci_reg: | |
3949 | err_dma: | |
3950 | pci_disable_device(pdev); | |
3951 | return err; | |
3952 | } | |
3953 | ||
3954 | /** | |
3955 | * ixgbe_remove - Device Removal Routine | |
3956 | * @pdev: PCI device information struct | |
3957 | * | |
3958 | * ixgbe_remove is called by the PCI subsystem to alert the driver | |
3959 | * that it should release a PCI device. The could be caused by a | |
3960 | * Hot-Plug event, or because the driver is going to be removed from | |
3961 | * memory. | |
3962 | **/ | |
3963 | static void __devexit ixgbe_remove(struct pci_dev *pdev) | |
3964 | { | |
3965 | struct net_device *netdev = pci_get_drvdata(pdev); | |
3966 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
3967 | ||
3968 | set_bit(__IXGBE_DOWN, &adapter->state); | |
3969 | del_timer_sync(&adapter->watchdog_timer); | |
3970 | ||
3971 | flush_scheduled_work(); | |
3972 | ||
5dd2d332 | 3973 | #ifdef CONFIG_IXGBE_DCA |
bd0362dd JC |
3974 | if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) { |
3975 | adapter->flags &= ~IXGBE_FLAG_DCA_ENABLED; | |
3976 | dca_remove_requester(&pdev->dev); | |
3977 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 1); | |
3978 | } | |
3979 | ||
3980 | #endif | |
9a799d71 AK |
3981 | unregister_netdev(netdev); |
3982 | ||
021230d4 | 3983 | ixgbe_reset_interrupt_capability(adapter); |
5eba3699 | 3984 | |
021230d4 | 3985 | ixgbe_release_hw_control(adapter); |
9a799d71 AK |
3986 | |
3987 | iounmap(adapter->hw.hw_addr); | |
3988 | pci_release_regions(pdev); | |
3989 | ||
021230d4 | 3990 | DPRINTK(PROBE, INFO, "complete\n"); |
b3c8b4ba | 3991 | ixgbe_napi_del_all(adapter); |
021230d4 AV |
3992 | kfree(adapter->tx_ring); |
3993 | kfree(adapter->rx_ring); | |
3994 | ||
9a799d71 AK |
3995 | free_netdev(netdev); |
3996 | ||
3997 | pci_disable_device(pdev); | |
3998 | } | |
3999 | ||
4000 | /** | |
4001 | * ixgbe_io_error_detected - called when PCI error is detected | |
4002 | * @pdev: Pointer to PCI device | |
4003 | * @state: The current pci connection state | |
4004 | * | |
4005 | * This function is called after a PCI bus error affecting | |
4006 | * this device has been detected. | |
4007 | */ | |
4008 | static pci_ers_result_t ixgbe_io_error_detected(struct pci_dev *pdev, | |
b4617240 | 4009 | pci_channel_state_t state) |
9a799d71 AK |
4010 | { |
4011 | struct net_device *netdev = pci_get_drvdata(pdev); | |
4012 | struct ixgbe_adapter *adapter = netdev->priv; | |
4013 | ||
4014 | netif_device_detach(netdev); | |
4015 | ||
4016 | if (netif_running(netdev)) | |
4017 | ixgbe_down(adapter); | |
4018 | pci_disable_device(pdev); | |
4019 | ||
b4617240 | 4020 | /* Request a slot reset. */ |
9a799d71 AK |
4021 | return PCI_ERS_RESULT_NEED_RESET; |
4022 | } | |
4023 | ||
4024 | /** | |
4025 | * ixgbe_io_slot_reset - called after the pci bus has been reset. | |
4026 | * @pdev: Pointer to PCI device | |
4027 | * | |
4028 | * Restart the card from scratch, as if from a cold-boot. | |
4029 | */ | |
4030 | static pci_ers_result_t ixgbe_io_slot_reset(struct pci_dev *pdev) | |
4031 | { | |
4032 | struct net_device *netdev = pci_get_drvdata(pdev); | |
4033 | struct ixgbe_adapter *adapter = netdev->priv; | |
4034 | ||
4035 | if (pci_enable_device(pdev)) { | |
4036 | DPRINTK(PROBE, ERR, | |
b4617240 | 4037 | "Cannot re-enable PCI device after reset.\n"); |
9a799d71 AK |
4038 | return PCI_ERS_RESULT_DISCONNECT; |
4039 | } | |
4040 | pci_set_master(pdev); | |
fb3b27bc | 4041 | pci_restore_state(pdev); |
9a799d71 AK |
4042 | |
4043 | pci_enable_wake(pdev, PCI_D3hot, 0); | |
4044 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
4045 | ||
4046 | ixgbe_reset(adapter); | |
4047 | ||
4048 | return PCI_ERS_RESULT_RECOVERED; | |
4049 | } | |
4050 | ||
4051 | /** | |
4052 | * ixgbe_io_resume - called when traffic can start flowing again. | |
4053 | * @pdev: Pointer to PCI device | |
4054 | * | |
4055 | * This callback is called when the error recovery driver tells us that | |
4056 | * its OK to resume normal operation. | |
4057 | */ | |
4058 | static void ixgbe_io_resume(struct pci_dev *pdev) | |
4059 | { | |
4060 | struct net_device *netdev = pci_get_drvdata(pdev); | |
4061 | struct ixgbe_adapter *adapter = netdev->priv; | |
4062 | ||
4063 | if (netif_running(netdev)) { | |
4064 | if (ixgbe_up(adapter)) { | |
4065 | DPRINTK(PROBE, INFO, "ixgbe_up failed after reset\n"); | |
4066 | return; | |
4067 | } | |
4068 | } | |
4069 | ||
4070 | netif_device_attach(netdev); | |
9a799d71 AK |
4071 | } |
4072 | ||
4073 | static struct pci_error_handlers ixgbe_err_handler = { | |
4074 | .error_detected = ixgbe_io_error_detected, | |
4075 | .slot_reset = ixgbe_io_slot_reset, | |
4076 | .resume = ixgbe_io_resume, | |
4077 | }; | |
4078 | ||
4079 | static struct pci_driver ixgbe_driver = { | |
4080 | .name = ixgbe_driver_name, | |
4081 | .id_table = ixgbe_pci_tbl, | |
4082 | .probe = ixgbe_probe, | |
4083 | .remove = __devexit_p(ixgbe_remove), | |
4084 | #ifdef CONFIG_PM | |
4085 | .suspend = ixgbe_suspend, | |
4086 | .resume = ixgbe_resume, | |
4087 | #endif | |
4088 | .shutdown = ixgbe_shutdown, | |
4089 | .err_handler = &ixgbe_err_handler | |
4090 | }; | |
4091 | ||
4092 | /** | |
4093 | * ixgbe_init_module - Driver Registration Routine | |
4094 | * | |
4095 | * ixgbe_init_module is the first routine called when the driver is | |
4096 | * loaded. All it does is register with the PCI subsystem. | |
4097 | **/ | |
4098 | static int __init ixgbe_init_module(void) | |
4099 | { | |
4100 | int ret; | |
4101 | printk(KERN_INFO "%s: %s - version %s\n", ixgbe_driver_name, | |
4102 | ixgbe_driver_string, ixgbe_driver_version); | |
4103 | ||
4104 | printk(KERN_INFO "%s: %s\n", ixgbe_driver_name, ixgbe_copyright); | |
4105 | ||
5dd2d332 | 4106 | #ifdef CONFIG_IXGBE_DCA |
bd0362dd | 4107 | dca_register_notify(&dca_notifier); |
bd0362dd | 4108 | #endif |
5dd2d332 | 4109 | |
9a799d71 AK |
4110 | ret = pci_register_driver(&ixgbe_driver); |
4111 | return ret; | |
4112 | } | |
b4617240 | 4113 | |
9a799d71 AK |
4114 | module_init(ixgbe_init_module); |
4115 | ||
4116 | /** | |
4117 | * ixgbe_exit_module - Driver Exit Cleanup Routine | |
4118 | * | |
4119 | * ixgbe_exit_module is called just before the driver is removed | |
4120 | * from memory. | |
4121 | **/ | |
4122 | static void __exit ixgbe_exit_module(void) | |
4123 | { | |
5dd2d332 | 4124 | #ifdef CONFIG_IXGBE_DCA |
bd0362dd JC |
4125 | dca_unregister_notify(&dca_notifier); |
4126 | #endif | |
9a799d71 AK |
4127 | pci_unregister_driver(&ixgbe_driver); |
4128 | } | |
bd0362dd | 4129 | |
5dd2d332 | 4130 | #ifdef CONFIG_IXGBE_DCA |
bd0362dd | 4131 | static int ixgbe_notify_dca(struct notifier_block *nb, unsigned long event, |
b4617240 | 4132 | void *p) |
bd0362dd JC |
4133 | { |
4134 | int ret_val; | |
4135 | ||
4136 | ret_val = driver_for_each_device(&ixgbe_driver.driver, NULL, &event, | |
b4617240 | 4137 | __ixgbe_notify_dca); |
bd0362dd JC |
4138 | |
4139 | return ret_val ? NOTIFY_BAD : NOTIFY_DONE; | |
4140 | } | |
5dd2d332 | 4141 | #endif /* CONFIG_IXGBE_DCA */ |
bd0362dd | 4142 | |
9a799d71 AK |
4143 | module_exit(ixgbe_exit_module); |
4144 | ||
4145 | /* ixgbe_main.c */ |