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9a799d71 AK |
1 | /******************************************************************************* |
2 | ||
3 | Intel 10 Gigabit PCI Express Linux driver | |
3efac5a0 | 4 | Copyright(c) 1999 - 2009 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 | |
04193058 | 50 | #define DRV_VERSION "2.0.16-k2" |
9c8eb720 | 51 | const char ixgbe_driver_version[] = DRV_VERSION; |
3efac5a0 | 52 | static char ixgbe_copyright[] = "Copyright (c) 1999-2009 Intel Corporation."; |
9a799d71 AK |
53 | |
54 | static const struct ixgbe_info *ixgbe_info_tbl[] = { | |
b4617240 | 55 | [board_82598] = &ixgbe_82598_info, |
e8e26350 | 56 | [board_82599] = &ixgbe_82599_info, |
9a799d71 AK |
57 | }; |
58 | ||
59 | /* ixgbe_pci_tbl - PCI Device ID Table | |
60 | * | |
61 | * Wildcard entries (PCI_ANY_ID) should come last | |
62 | * Last entry must be all 0s | |
63 | * | |
64 | * { Vendor ID, Device ID, SubVendor ID, SubDevice ID, | |
65 | * Class, Class Mask, private data (not used) } | |
66 | */ | |
67 | static struct pci_device_id ixgbe_pci_tbl[] = { | |
1e336d0f DS |
68 | {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598), |
69 | board_82598 }, | |
9a799d71 | 70 | {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AF_DUAL_PORT), |
3957d63d | 71 | board_82598 }, |
9a799d71 | 72 | {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AF_SINGLE_PORT), |
3957d63d | 73 | board_82598 }, |
0befdb3e JB |
74 | {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AT), |
75 | board_82598 }, | |
9a799d71 | 76 | {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_CX4), |
3957d63d | 77 | board_82598 }, |
8d792cd9 JB |
78 | {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_CX4_DUAL_PORT), |
79 | board_82598 }, | |
c4900be0 DS |
80 | {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_DA_DUAL_PORT), |
81 | board_82598 }, | |
82 | {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_SR_DUAL_PORT_EM), | |
83 | board_82598 }, | |
b95f5fcb JB |
84 | {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_XF_LR), |
85 | board_82598 }, | |
c4900be0 DS |
86 | {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_SFP_LOM), |
87 | board_82598 }, | |
2f21bdd3 DS |
88 | {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_BX), |
89 | board_82598 }, | |
e8e26350 PW |
90 | {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_KX4), |
91 | board_82599 }, | |
92 | {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP), | |
93 | board_82599 }, | |
9a799d71 AK |
94 | |
95 | /* required last entry */ | |
96 | {0, } | |
97 | }; | |
98 | MODULE_DEVICE_TABLE(pci, ixgbe_pci_tbl); | |
99 | ||
5dd2d332 | 100 | #ifdef CONFIG_IXGBE_DCA |
bd0362dd | 101 | static int ixgbe_notify_dca(struct notifier_block *, unsigned long event, |
b4617240 | 102 | void *p); |
bd0362dd JC |
103 | static struct notifier_block dca_notifier = { |
104 | .notifier_call = ixgbe_notify_dca, | |
105 | .next = NULL, | |
106 | .priority = 0 | |
107 | }; | |
108 | #endif | |
109 | ||
9a799d71 AK |
110 | MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>"); |
111 | MODULE_DESCRIPTION("Intel(R) 10 Gigabit PCI Express Network Driver"); | |
112 | MODULE_LICENSE("GPL"); | |
113 | MODULE_VERSION(DRV_VERSION); | |
114 | ||
115 | #define DEFAULT_DEBUG_LEVEL_SHIFT 3 | |
116 | ||
5eba3699 AV |
117 | static void ixgbe_release_hw_control(struct ixgbe_adapter *adapter) |
118 | { | |
119 | u32 ctrl_ext; | |
120 | ||
121 | /* Let firmware take over control of h/w */ | |
122 | ctrl_ext = IXGBE_READ_REG(&adapter->hw, IXGBE_CTRL_EXT); | |
123 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_CTRL_EXT, | |
b4617240 | 124 | ctrl_ext & ~IXGBE_CTRL_EXT_DRV_LOAD); |
5eba3699 AV |
125 | } |
126 | ||
127 | static void ixgbe_get_hw_control(struct ixgbe_adapter *adapter) | |
128 | { | |
129 | u32 ctrl_ext; | |
130 | ||
131 | /* Let firmware know the driver has taken over */ | |
132 | ctrl_ext = IXGBE_READ_REG(&adapter->hw, IXGBE_CTRL_EXT); | |
133 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_CTRL_EXT, | |
b4617240 | 134 | ctrl_ext | IXGBE_CTRL_EXT_DRV_LOAD); |
5eba3699 | 135 | } |
9a799d71 | 136 | |
e8e26350 PW |
137 | /* |
138 | * ixgbe_set_ivar - set the IVAR registers, mapping interrupt causes to vectors | |
139 | * @adapter: pointer to adapter struct | |
140 | * @direction: 0 for Rx, 1 for Tx, -1 for other causes | |
141 | * @queue: queue to map the corresponding interrupt to | |
142 | * @msix_vector: the vector to map to the corresponding queue | |
143 | * | |
144 | */ | |
145 | static void ixgbe_set_ivar(struct ixgbe_adapter *adapter, s8 direction, | |
146 | u8 queue, u8 msix_vector) | |
9a799d71 AK |
147 | { |
148 | u32 ivar, index; | |
e8e26350 PW |
149 | struct ixgbe_hw *hw = &adapter->hw; |
150 | switch (hw->mac.type) { | |
151 | case ixgbe_mac_82598EB: | |
152 | msix_vector |= IXGBE_IVAR_ALLOC_VAL; | |
153 | if (direction == -1) | |
154 | direction = 0; | |
155 | index = (((direction * 64) + queue) >> 2) & 0x1F; | |
156 | ivar = IXGBE_READ_REG(hw, IXGBE_IVAR(index)); | |
157 | ivar &= ~(0xFF << (8 * (queue & 0x3))); | |
158 | ivar |= (msix_vector << (8 * (queue & 0x3))); | |
159 | IXGBE_WRITE_REG(hw, IXGBE_IVAR(index), ivar); | |
160 | break; | |
161 | case ixgbe_mac_82599EB: | |
162 | if (direction == -1) { | |
163 | /* other causes */ | |
164 | msix_vector |= IXGBE_IVAR_ALLOC_VAL; | |
165 | index = ((queue & 1) * 8); | |
166 | ivar = IXGBE_READ_REG(&adapter->hw, IXGBE_IVAR_MISC); | |
167 | ivar &= ~(0xFF << index); | |
168 | ivar |= (msix_vector << index); | |
169 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_IVAR_MISC, ivar); | |
170 | break; | |
171 | } else { | |
172 | /* tx or rx causes */ | |
173 | msix_vector |= IXGBE_IVAR_ALLOC_VAL; | |
174 | index = ((16 * (queue & 1)) + (8 * direction)); | |
175 | ivar = IXGBE_READ_REG(hw, IXGBE_IVAR(queue >> 1)); | |
176 | ivar &= ~(0xFF << index); | |
177 | ivar |= (msix_vector << index); | |
178 | IXGBE_WRITE_REG(hw, IXGBE_IVAR(queue >> 1), ivar); | |
179 | break; | |
180 | } | |
181 | default: | |
182 | break; | |
183 | } | |
9a799d71 AK |
184 | } |
185 | ||
186 | static void ixgbe_unmap_and_free_tx_resource(struct ixgbe_adapter *adapter, | |
b4617240 PW |
187 | struct ixgbe_tx_buffer |
188 | *tx_buffer_info) | |
9a799d71 | 189 | { |
44df32c5 | 190 | tx_buffer_info->dma = 0; |
9a799d71 | 191 | if (tx_buffer_info->skb) { |
44df32c5 AD |
192 | skb_dma_unmap(&adapter->pdev->dev, tx_buffer_info->skb, |
193 | DMA_TO_DEVICE); | |
9a799d71 AK |
194 | dev_kfree_skb_any(tx_buffer_info->skb); |
195 | tx_buffer_info->skb = NULL; | |
196 | } | |
44df32c5 | 197 | tx_buffer_info->time_stamp = 0; |
9a799d71 AK |
198 | /* tx_buffer_info must be completely set up in the transmit path */ |
199 | } | |
200 | ||
201 | static inline bool ixgbe_check_tx_hang(struct ixgbe_adapter *adapter, | |
b4617240 PW |
202 | struct ixgbe_ring *tx_ring, |
203 | unsigned int eop) | |
9a799d71 | 204 | { |
e01c31a5 | 205 | struct ixgbe_hw *hw = &adapter->hw; |
e01c31a5 | 206 | |
9a799d71 | 207 | /* Detect a transmit hang in hardware, this serializes the |
e01c31a5 | 208 | * check with the clearing of time_stamp and movement of eop */ |
9a799d71 | 209 | adapter->detect_tx_hung = false; |
44df32c5 | 210 | if (tx_ring->tx_buffer_info[eop].time_stamp && |
9a799d71 AK |
211 | time_after(jiffies, tx_ring->tx_buffer_info[eop].time_stamp + HZ) && |
212 | !(IXGBE_READ_REG(&adapter->hw, IXGBE_TFCS) & IXGBE_TFCS_TXOFF)) { | |
213 | /* detected Tx unit hang */ | |
e01c31a5 JB |
214 | union ixgbe_adv_tx_desc *tx_desc; |
215 | tx_desc = IXGBE_TX_DESC_ADV(*tx_ring, eop); | |
9a799d71 | 216 | DPRINTK(DRV, ERR, "Detected Tx Unit Hang\n" |
e01c31a5 JB |
217 | " Tx Queue <%d>\n" |
218 | " TDH, TDT <%x>, <%x>\n" | |
9a799d71 AK |
219 | " next_to_use <%x>\n" |
220 | " next_to_clean <%x>\n" | |
221 | "tx_buffer_info[next_to_clean]\n" | |
222 | " time_stamp <%lx>\n" | |
e01c31a5 JB |
223 | " jiffies <%lx>\n", |
224 | tx_ring->queue_index, | |
44df32c5 AD |
225 | IXGBE_READ_REG(hw, tx_ring->head), |
226 | IXGBE_READ_REG(hw, tx_ring->tail), | |
e01c31a5 JB |
227 | tx_ring->next_to_use, eop, |
228 | tx_ring->tx_buffer_info[eop].time_stamp, jiffies); | |
9a799d71 AK |
229 | return true; |
230 | } | |
231 | ||
232 | return false; | |
233 | } | |
234 | ||
b4617240 PW |
235 | #define IXGBE_MAX_TXD_PWR 14 |
236 | #define IXGBE_MAX_DATA_PER_TXD (1 << IXGBE_MAX_TXD_PWR) | |
e092be60 AV |
237 | |
238 | /* Tx Descriptors needed, worst case */ | |
239 | #define TXD_USE_COUNT(S) (((S) >> IXGBE_MAX_TXD_PWR) + \ | |
240 | (((S) & (IXGBE_MAX_DATA_PER_TXD - 1)) ? 1 : 0)) | |
241 | #define DESC_NEEDED (TXD_USE_COUNT(IXGBE_MAX_DATA_PER_TXD) /* skb->data */ + \ | |
b4617240 | 242 | MAX_SKB_FRAGS * TXD_USE_COUNT(PAGE_SIZE) + 1) /* for context */ |
e092be60 | 243 | |
e01c31a5 JB |
244 | static void ixgbe_tx_timeout(struct net_device *netdev); |
245 | ||
9a799d71 AK |
246 | /** |
247 | * ixgbe_clean_tx_irq - Reclaim resources after transmit completes | |
248 | * @adapter: board private structure | |
e01c31a5 | 249 | * @tx_ring: tx ring to clean |
9a1a69ad JB |
250 | * |
251 | * returns true if transmit work is done | |
9a799d71 AK |
252 | **/ |
253 | static bool ixgbe_clean_tx_irq(struct ixgbe_adapter *adapter, | |
e01c31a5 | 254 | struct ixgbe_ring *tx_ring) |
9a799d71 | 255 | { |
e01c31a5 | 256 | struct net_device *netdev = adapter->netdev; |
12207e49 PWJ |
257 | union ixgbe_adv_tx_desc *tx_desc, *eop_desc; |
258 | struct ixgbe_tx_buffer *tx_buffer_info; | |
259 | unsigned int i, eop, count = 0; | |
e01c31a5 | 260 | unsigned int total_bytes = 0, total_packets = 0; |
9a799d71 AK |
261 | |
262 | i = tx_ring->next_to_clean; | |
12207e49 PWJ |
263 | eop = tx_ring->tx_buffer_info[i].next_to_watch; |
264 | eop_desc = IXGBE_TX_DESC_ADV(*tx_ring, eop); | |
265 | ||
266 | while ((eop_desc->wb.status & cpu_to_le32(IXGBE_TXD_STAT_DD)) && | |
9a1a69ad | 267 | (count < tx_ring->work_limit)) { |
12207e49 PWJ |
268 | bool cleaned = false; |
269 | for ( ; !cleaned; count++) { | |
270 | struct sk_buff *skb; | |
9a799d71 AK |
271 | tx_desc = IXGBE_TX_DESC_ADV(*tx_ring, i); |
272 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; | |
12207e49 | 273 | cleaned = (i == eop); |
e01c31a5 | 274 | skb = tx_buffer_info->skb; |
9a799d71 | 275 | |
12207e49 | 276 | if (cleaned && skb) { |
e092be60 | 277 | unsigned int segs, bytecount; |
e01c31a5 JB |
278 | |
279 | /* gso_segs is currently only valid for tcp */ | |
e092be60 AV |
280 | segs = skb_shinfo(skb)->gso_segs ?: 1; |
281 | /* multiply data chunks by size of headers */ | |
282 | bytecount = ((segs - 1) * skb_headlen(skb)) + | |
e01c31a5 JB |
283 | skb->len; |
284 | total_packets += segs; | |
285 | total_bytes += bytecount; | |
e092be60 | 286 | } |
e01c31a5 | 287 | |
9a799d71 | 288 | ixgbe_unmap_and_free_tx_resource(adapter, |
e01c31a5 | 289 | tx_buffer_info); |
9a799d71 | 290 | |
12207e49 PWJ |
291 | tx_desc->wb.status = 0; |
292 | ||
9a799d71 AK |
293 | i++; |
294 | if (i == tx_ring->count) | |
295 | i = 0; | |
e01c31a5 | 296 | } |
12207e49 PWJ |
297 | |
298 | eop = tx_ring->tx_buffer_info[i].next_to_watch; | |
299 | eop_desc = IXGBE_TX_DESC_ADV(*tx_ring, eop); | |
300 | } | |
301 | ||
9a799d71 AK |
302 | tx_ring->next_to_clean = i; |
303 | ||
e092be60 | 304 | #define TX_WAKE_THRESHOLD (DESC_NEEDED * 2) |
e01c31a5 JB |
305 | if (unlikely(count && netif_carrier_ok(netdev) && |
306 | (IXGBE_DESC_UNUSED(tx_ring) >= TX_WAKE_THRESHOLD))) { | |
e092be60 AV |
307 | /* Make sure that anybody stopping the queue after this |
308 | * sees the new next_to_clean. | |
309 | */ | |
310 | smp_mb(); | |
30eba97a AV |
311 | if (__netif_subqueue_stopped(netdev, tx_ring->queue_index) && |
312 | !test_bit(__IXGBE_DOWN, &adapter->state)) { | |
313 | netif_wake_subqueue(netdev, tx_ring->queue_index); | |
e01c31a5 | 314 | ++adapter->restart_queue; |
30eba97a | 315 | } |
e092be60 | 316 | } |
9a799d71 | 317 | |
e01c31a5 JB |
318 | if (adapter->detect_tx_hung) { |
319 | if (ixgbe_check_tx_hang(adapter, tx_ring, i)) { | |
320 | /* schedule immediate reset if we believe we hung */ | |
321 | DPRINTK(PROBE, INFO, | |
322 | "tx hang %d detected, resetting adapter\n", | |
323 | adapter->tx_timeout_count + 1); | |
324 | ixgbe_tx_timeout(adapter->netdev); | |
325 | } | |
326 | } | |
9a799d71 | 327 | |
e01c31a5 | 328 | /* re-arm the interrupt */ |
835462fc NS |
329 | if (count >= tx_ring->work_limit) { |
330 | if (adapter->hw.mac.type == ixgbe_mac_82598EB) | |
331 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS, | |
332 | tx_ring->v_idx); | |
333 | else if (tx_ring->v_idx & 0xFFFFFFFF) | |
334 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS_EX(0), | |
335 | tx_ring->v_idx); | |
336 | else | |
337 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS_EX(1), | |
338 | (tx_ring->v_idx >> 32)); | |
339 | } | |
340 | ||
9a799d71 | 341 | |
e01c31a5 JB |
342 | tx_ring->total_bytes += total_bytes; |
343 | tx_ring->total_packets += total_packets; | |
e01c31a5 | 344 | tx_ring->stats.packets += total_packets; |
12207e49 | 345 | tx_ring->stats.bytes += total_bytes; |
e01c31a5 JB |
346 | adapter->net_stats.tx_bytes += total_bytes; |
347 | adapter->net_stats.tx_packets += total_packets; | |
9a1a69ad | 348 | return (count < tx_ring->work_limit); |
9a799d71 AK |
349 | } |
350 | ||
5dd2d332 | 351 | #ifdef CONFIG_IXGBE_DCA |
bd0362dd | 352 | static void ixgbe_update_rx_dca(struct ixgbe_adapter *adapter, |
b4617240 | 353 | struct ixgbe_ring *rx_ring) |
bd0362dd JC |
354 | { |
355 | u32 rxctrl; | |
356 | int cpu = get_cpu(); | |
3a581073 | 357 | int q = rx_ring - adapter->rx_ring; |
bd0362dd | 358 | |
3a581073 | 359 | if (rx_ring->cpu != cpu) { |
bd0362dd | 360 | rxctrl = IXGBE_READ_REG(&adapter->hw, IXGBE_DCA_RXCTRL(q)); |
e8e26350 PW |
361 | if (adapter->hw.mac.type == ixgbe_mac_82598EB) { |
362 | rxctrl &= ~IXGBE_DCA_RXCTRL_CPUID_MASK; | |
363 | rxctrl |= dca3_get_tag(&adapter->pdev->dev, cpu); | |
364 | } else if (adapter->hw.mac.type == ixgbe_mac_82599EB) { | |
365 | rxctrl &= ~IXGBE_DCA_RXCTRL_CPUID_MASK_82599; | |
366 | rxctrl |= (dca3_get_tag(&adapter->pdev->dev, cpu) << | |
367 | IXGBE_DCA_RXCTRL_CPUID_SHIFT_82599); | |
368 | } | |
bd0362dd JC |
369 | rxctrl |= IXGBE_DCA_RXCTRL_DESC_DCA_EN; |
370 | rxctrl |= IXGBE_DCA_RXCTRL_HEAD_DCA_EN; | |
15005a32 DS |
371 | rxctrl &= ~(IXGBE_DCA_RXCTRL_DESC_RRO_EN); |
372 | rxctrl &= ~(IXGBE_DCA_RXCTRL_DESC_WRO_EN | | |
e8e26350 | 373 | IXGBE_DCA_RXCTRL_DESC_HSRO_EN); |
bd0362dd | 374 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_RXCTRL(q), rxctrl); |
3a581073 | 375 | rx_ring->cpu = cpu; |
bd0362dd JC |
376 | } |
377 | put_cpu(); | |
378 | } | |
379 | ||
380 | static void ixgbe_update_tx_dca(struct ixgbe_adapter *adapter, | |
b4617240 | 381 | struct ixgbe_ring *tx_ring) |
bd0362dd JC |
382 | { |
383 | u32 txctrl; | |
384 | int cpu = get_cpu(); | |
3a581073 | 385 | int q = tx_ring - adapter->tx_ring; |
bd0362dd | 386 | |
3a581073 | 387 | if (tx_ring->cpu != cpu) { |
bd0362dd | 388 | txctrl = IXGBE_READ_REG(&adapter->hw, IXGBE_DCA_TXCTRL(q)); |
e8e26350 PW |
389 | if (adapter->hw.mac.type == ixgbe_mac_82598EB) { |
390 | txctrl &= ~IXGBE_DCA_TXCTRL_CPUID_MASK; | |
391 | txctrl |= dca3_get_tag(&adapter->pdev->dev, cpu); | |
392 | } else if (adapter->hw.mac.type == ixgbe_mac_82599EB) { | |
393 | txctrl &= ~IXGBE_DCA_TXCTRL_CPUID_MASK_82599; | |
394 | txctrl |= (dca3_get_tag(&adapter->pdev->dev, cpu) << | |
395 | IXGBE_DCA_TXCTRL_CPUID_SHIFT_82599); | |
396 | } | |
bd0362dd JC |
397 | txctrl |= IXGBE_DCA_TXCTRL_DESC_DCA_EN; |
398 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_TXCTRL(q), txctrl); | |
3a581073 | 399 | tx_ring->cpu = cpu; |
bd0362dd JC |
400 | } |
401 | put_cpu(); | |
402 | } | |
403 | ||
404 | static void ixgbe_setup_dca(struct ixgbe_adapter *adapter) | |
405 | { | |
406 | int i; | |
407 | ||
408 | if (!(adapter->flags & IXGBE_FLAG_DCA_ENABLED)) | |
409 | return; | |
410 | ||
411 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
412 | adapter->tx_ring[i].cpu = -1; | |
413 | ixgbe_update_tx_dca(adapter, &adapter->tx_ring[i]); | |
414 | } | |
415 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
416 | adapter->rx_ring[i].cpu = -1; | |
417 | ixgbe_update_rx_dca(adapter, &adapter->rx_ring[i]); | |
418 | } | |
419 | } | |
420 | ||
421 | static int __ixgbe_notify_dca(struct device *dev, void *data) | |
422 | { | |
423 | struct net_device *netdev = dev_get_drvdata(dev); | |
424 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
425 | unsigned long event = *(unsigned long *)data; | |
426 | ||
427 | switch (event) { | |
428 | case DCA_PROVIDER_ADD: | |
96b0e0f6 JB |
429 | /* if we're already enabled, don't do it again */ |
430 | if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) | |
431 | break; | |
bd0362dd JC |
432 | /* Always use CB2 mode, difference is masked |
433 | * in the CB driver. */ | |
434 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 2); | |
652f093f | 435 | if (dca_add_requester(dev) == 0) { |
96b0e0f6 | 436 | adapter->flags |= IXGBE_FLAG_DCA_ENABLED; |
bd0362dd JC |
437 | ixgbe_setup_dca(adapter); |
438 | break; | |
439 | } | |
440 | /* Fall Through since DCA is disabled. */ | |
441 | case DCA_PROVIDER_REMOVE: | |
442 | if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) { | |
443 | dca_remove_requester(dev); | |
444 | adapter->flags &= ~IXGBE_FLAG_DCA_ENABLED; | |
445 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 1); | |
446 | } | |
447 | break; | |
448 | } | |
449 | ||
652f093f | 450 | return 0; |
bd0362dd JC |
451 | } |
452 | ||
5dd2d332 | 453 | #endif /* CONFIG_IXGBE_DCA */ |
9a799d71 AK |
454 | /** |
455 | * ixgbe_receive_skb - Send a completed packet up the stack | |
456 | * @adapter: board private structure | |
457 | * @skb: packet to send up | |
177db6ff MC |
458 | * @status: hardware indication of status of receive |
459 | * @rx_ring: rx descriptor ring (for a specific queue) to setup | |
460 | * @rx_desc: rx descriptor | |
9a799d71 | 461 | **/ |
78b6f4ce | 462 | static void ixgbe_receive_skb(struct ixgbe_q_vector *q_vector, |
b4617240 | 463 | struct sk_buff *skb, u8 status, |
177db6ff | 464 | union ixgbe_adv_rx_desc *rx_desc) |
9a799d71 | 465 | { |
78b6f4ce HX |
466 | struct ixgbe_adapter *adapter = q_vector->adapter; |
467 | struct napi_struct *napi = &q_vector->napi; | |
177db6ff MC |
468 | bool is_vlan = (status & IXGBE_RXD_STAT_VP); |
469 | u16 tag = le16_to_cpu(rx_desc->wb.upper.vlan); | |
9a799d71 | 470 | |
0c8dfc83 | 471 | skb_record_rx_queue(skb, q_vector - &adapter->q_vector[0]); |
182ff8df | 472 | if (!(adapter->flags & IXGBE_FLAG_IN_NETPOLL)) { |
2f90b865 | 473 | if (adapter->vlgrp && is_vlan && (tag != 0)) |
78b6f4ce | 474 | vlan_gro_receive(napi, adapter->vlgrp, tag, skb); |
9a799d71 | 475 | else |
78b6f4ce | 476 | napi_gro_receive(napi, skb); |
177db6ff | 477 | } else { |
182ff8df AD |
478 | if (adapter->vlgrp && is_vlan && (tag != 0)) |
479 | vlan_hwaccel_rx(skb, adapter->vlgrp, tag); | |
480 | else | |
481 | netif_rx(skb); | |
9a799d71 AK |
482 | } |
483 | } | |
484 | ||
e59bd25d AV |
485 | /** |
486 | * ixgbe_rx_checksum - indicate in skb if hw indicated a good cksum | |
487 | * @adapter: address of board private structure | |
488 | * @status_err: hardware indication of status of receive | |
489 | * @skb: skb currently being received and modified | |
490 | **/ | |
9a799d71 | 491 | static inline void ixgbe_rx_checksum(struct ixgbe_adapter *adapter, |
712744be | 492 | u32 status_err, struct sk_buff *skb) |
9a799d71 AK |
493 | { |
494 | skb->ip_summed = CHECKSUM_NONE; | |
495 | ||
712744be JB |
496 | /* Rx csum disabled */ |
497 | if (!(adapter->flags & IXGBE_FLAG_RX_CSUM_ENABLED)) | |
9a799d71 | 498 | return; |
e59bd25d AV |
499 | |
500 | /* if IP and error */ | |
501 | if ((status_err & IXGBE_RXD_STAT_IPCS) && | |
502 | (status_err & IXGBE_RXDADV_ERR_IPE)) { | |
9a799d71 AK |
503 | adapter->hw_csum_rx_error++; |
504 | return; | |
505 | } | |
e59bd25d AV |
506 | |
507 | if (!(status_err & IXGBE_RXD_STAT_L4CS)) | |
508 | return; | |
509 | ||
510 | if (status_err & IXGBE_RXDADV_ERR_TCPE) { | |
511 | adapter->hw_csum_rx_error++; | |
512 | return; | |
513 | } | |
514 | ||
9a799d71 | 515 | /* It must be a TCP or UDP packet with a valid checksum */ |
e59bd25d | 516 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
9a799d71 AK |
517 | adapter->hw_csum_rx_good++; |
518 | } | |
519 | ||
e8e26350 PW |
520 | static inline void ixgbe_release_rx_desc(struct ixgbe_hw *hw, |
521 | struct ixgbe_ring *rx_ring, u32 val) | |
522 | { | |
523 | /* | |
524 | * Force memory writes to complete before letting h/w | |
525 | * know there are new descriptors to fetch. (Only | |
526 | * applicable for weak-ordered memory model archs, | |
527 | * such as IA-64). | |
528 | */ | |
529 | wmb(); | |
530 | IXGBE_WRITE_REG(hw, IXGBE_RDT(rx_ring->reg_idx), val); | |
531 | } | |
532 | ||
9a799d71 AK |
533 | /** |
534 | * ixgbe_alloc_rx_buffers - Replace used receive buffers; packet split | |
535 | * @adapter: address of board private structure | |
536 | **/ | |
537 | static void ixgbe_alloc_rx_buffers(struct ixgbe_adapter *adapter, | |
7c6e0a43 JB |
538 | struct ixgbe_ring *rx_ring, |
539 | int cleaned_count) | |
9a799d71 | 540 | { |
9a799d71 AK |
541 | struct pci_dev *pdev = adapter->pdev; |
542 | union ixgbe_adv_rx_desc *rx_desc; | |
3a581073 | 543 | struct ixgbe_rx_buffer *bi; |
9a799d71 | 544 | unsigned int i; |
e8e26350 | 545 | unsigned int bufsz = rx_ring->rx_buf_len + NET_IP_ALIGN; |
9a799d71 AK |
546 | |
547 | i = rx_ring->next_to_use; | |
3a581073 | 548 | bi = &rx_ring->rx_buffer_info[i]; |
9a799d71 AK |
549 | |
550 | while (cleaned_count--) { | |
551 | rx_desc = IXGBE_RX_DESC_ADV(*rx_ring, i); | |
552 | ||
762f4c57 | 553 | if (!bi->page_dma && |
3a581073 | 554 | (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED)) { |
3a581073 | 555 | if (!bi->page) { |
762f4c57 JB |
556 | bi->page = alloc_page(GFP_ATOMIC); |
557 | if (!bi->page) { | |
558 | adapter->alloc_rx_page_failed++; | |
559 | goto no_buffers; | |
560 | } | |
561 | bi->page_offset = 0; | |
562 | } else { | |
563 | /* use a half page if we're re-using */ | |
564 | bi->page_offset ^= (PAGE_SIZE / 2); | |
9a799d71 | 565 | } |
762f4c57 JB |
566 | |
567 | bi->page_dma = pci_map_page(pdev, bi->page, | |
568 | bi->page_offset, | |
569 | (PAGE_SIZE / 2), | |
570 | PCI_DMA_FROMDEVICE); | |
9a799d71 AK |
571 | } |
572 | ||
3a581073 | 573 | if (!bi->skb) { |
5ecc3614 | 574 | struct sk_buff *skb; |
e8e26350 | 575 | skb = netdev_alloc_skb(adapter->netdev, bufsz); |
9a799d71 AK |
576 | |
577 | if (!skb) { | |
578 | adapter->alloc_rx_buff_failed++; | |
579 | goto no_buffers; | |
580 | } | |
581 | ||
582 | /* | |
583 | * Make buffer alignment 2 beyond a 16 byte boundary | |
584 | * this will result in a 16 byte aligned IP header after | |
585 | * the 14 byte MAC header is removed | |
586 | */ | |
587 | skb_reserve(skb, NET_IP_ALIGN); | |
588 | ||
3a581073 | 589 | bi->skb = skb; |
e8e26350 | 590 | bi->dma = pci_map_single(pdev, skb->data, bufsz, |
3a581073 | 591 | PCI_DMA_FROMDEVICE); |
9a799d71 AK |
592 | } |
593 | /* Refresh the desc even if buffer_addrs didn't change because | |
594 | * each write-back erases this info. */ | |
595 | if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) { | |
3a581073 JB |
596 | rx_desc->read.pkt_addr = cpu_to_le64(bi->page_dma); |
597 | rx_desc->read.hdr_addr = cpu_to_le64(bi->dma); | |
9a799d71 | 598 | } else { |
3a581073 | 599 | rx_desc->read.pkt_addr = cpu_to_le64(bi->dma); |
9a799d71 AK |
600 | } |
601 | ||
602 | i++; | |
603 | if (i == rx_ring->count) | |
604 | i = 0; | |
3a581073 | 605 | bi = &rx_ring->rx_buffer_info[i]; |
9a799d71 | 606 | } |
7c6e0a43 | 607 | |
9a799d71 AK |
608 | no_buffers: |
609 | if (rx_ring->next_to_use != i) { | |
610 | rx_ring->next_to_use = i; | |
611 | if (i-- == 0) | |
612 | i = (rx_ring->count - 1); | |
613 | ||
e8e26350 | 614 | ixgbe_release_rx_desc(&adapter->hw, rx_ring, i); |
9a799d71 AK |
615 | } |
616 | } | |
617 | ||
7c6e0a43 JB |
618 | static inline u16 ixgbe_get_hdr_info(union ixgbe_adv_rx_desc *rx_desc) |
619 | { | |
620 | return rx_desc->wb.lower.lo_dword.hs_rss.hdr_info; | |
621 | } | |
622 | ||
623 | static inline u16 ixgbe_get_pkt_info(union ixgbe_adv_rx_desc *rx_desc) | |
624 | { | |
625 | return rx_desc->wb.lower.lo_dword.hs_rss.pkt_info; | |
626 | } | |
627 | ||
f8212f97 AD |
628 | static inline u32 ixgbe_get_rsc_count(union ixgbe_adv_rx_desc *rx_desc) |
629 | { | |
630 | return (le32_to_cpu(rx_desc->wb.lower.lo_dword.data) & | |
631 | IXGBE_RXDADV_RSCCNT_MASK) >> | |
632 | IXGBE_RXDADV_RSCCNT_SHIFT; | |
633 | } | |
634 | ||
635 | /** | |
636 | * ixgbe_transform_rsc_queue - change rsc queue into a full packet | |
637 | * @skb: pointer to the last skb in the rsc queue | |
638 | * | |
639 | * This function changes a queue full of hw rsc buffers into a completed | |
640 | * packet. It uses the ->prev pointers to find the first packet and then | |
641 | * turns it into the frag list owner. | |
642 | **/ | |
643 | static inline struct sk_buff *ixgbe_transform_rsc_queue(struct sk_buff *skb) | |
644 | { | |
645 | unsigned int frag_list_size = 0; | |
646 | ||
647 | while (skb->prev) { | |
648 | struct sk_buff *prev = skb->prev; | |
649 | frag_list_size += skb->len; | |
650 | skb->prev = NULL; | |
651 | skb = prev; | |
652 | } | |
653 | ||
654 | skb_shinfo(skb)->frag_list = skb->next; | |
655 | skb->next = NULL; | |
656 | skb->len += frag_list_size; | |
657 | skb->data_len += frag_list_size; | |
658 | skb->truesize += frag_list_size; | |
659 | return skb; | |
660 | } | |
661 | ||
78b6f4ce | 662 | static bool ixgbe_clean_rx_irq(struct ixgbe_q_vector *q_vector, |
b4617240 PW |
663 | struct ixgbe_ring *rx_ring, |
664 | int *work_done, int work_to_do) | |
9a799d71 | 665 | { |
78b6f4ce | 666 | struct ixgbe_adapter *adapter = q_vector->adapter; |
9a799d71 AK |
667 | struct pci_dev *pdev = adapter->pdev; |
668 | union ixgbe_adv_rx_desc *rx_desc, *next_rxd; | |
669 | struct ixgbe_rx_buffer *rx_buffer_info, *next_buffer; | |
670 | struct sk_buff *skb; | |
f8212f97 | 671 | unsigned int i, rsc_count = 0; |
7c6e0a43 | 672 | u32 len, staterr; |
177db6ff MC |
673 | u16 hdr_info; |
674 | bool cleaned = false; | |
9a799d71 | 675 | int cleaned_count = 0; |
d2f4fbe2 | 676 | unsigned int total_rx_bytes = 0, total_rx_packets = 0; |
9a799d71 AK |
677 | |
678 | i = rx_ring->next_to_clean; | |
9a799d71 AK |
679 | rx_desc = IXGBE_RX_DESC_ADV(*rx_ring, i); |
680 | staterr = le32_to_cpu(rx_desc->wb.upper.status_error); | |
681 | rx_buffer_info = &rx_ring->rx_buffer_info[i]; | |
9a799d71 AK |
682 | |
683 | while (staterr & IXGBE_RXD_STAT_DD) { | |
7c6e0a43 | 684 | u32 upper_len = 0; |
9a799d71 AK |
685 | if (*work_done >= work_to_do) |
686 | break; | |
687 | (*work_done)++; | |
688 | ||
689 | if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) { | |
7c6e0a43 JB |
690 | hdr_info = le16_to_cpu(ixgbe_get_hdr_info(rx_desc)); |
691 | len = (hdr_info & IXGBE_RXDADV_HDRBUFLEN_MASK) >> | |
762f4c57 | 692 | IXGBE_RXDADV_HDRBUFLEN_SHIFT; |
9a799d71 AK |
693 | if (hdr_info & IXGBE_RXDADV_SPH) |
694 | adapter->rx_hdr_split++; | |
695 | if (len > IXGBE_RX_HDR_SIZE) | |
696 | len = IXGBE_RX_HDR_SIZE; | |
697 | upper_len = le16_to_cpu(rx_desc->wb.upper.length); | |
7c6e0a43 | 698 | } else { |
9a799d71 | 699 | len = le16_to_cpu(rx_desc->wb.upper.length); |
7c6e0a43 | 700 | } |
9a799d71 AK |
701 | |
702 | cleaned = true; | |
703 | skb = rx_buffer_info->skb; | |
704 | prefetch(skb->data - NET_IP_ALIGN); | |
705 | rx_buffer_info->skb = NULL; | |
706 | ||
707 | if (len && !skb_shinfo(skb)->nr_frags) { | |
708 | pci_unmap_single(pdev, rx_buffer_info->dma, | |
5ecc3614 | 709 | rx_ring->rx_buf_len, |
b4617240 | 710 | PCI_DMA_FROMDEVICE); |
9a799d71 AK |
711 | skb_put(skb, len); |
712 | } | |
713 | ||
714 | if (upper_len) { | |
715 | pci_unmap_page(pdev, rx_buffer_info->page_dma, | |
762f4c57 | 716 | PAGE_SIZE / 2, PCI_DMA_FROMDEVICE); |
9a799d71 AK |
717 | rx_buffer_info->page_dma = 0; |
718 | skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags, | |
762f4c57 JB |
719 | rx_buffer_info->page, |
720 | rx_buffer_info->page_offset, | |
721 | upper_len); | |
722 | ||
723 | if ((rx_ring->rx_buf_len > (PAGE_SIZE / 2)) || | |
724 | (page_count(rx_buffer_info->page) != 1)) | |
725 | rx_buffer_info->page = NULL; | |
726 | else | |
727 | get_page(rx_buffer_info->page); | |
9a799d71 AK |
728 | |
729 | skb->len += upper_len; | |
730 | skb->data_len += upper_len; | |
731 | skb->truesize += upper_len; | |
732 | } | |
733 | ||
734 | i++; | |
735 | if (i == rx_ring->count) | |
736 | i = 0; | |
9a799d71 AK |
737 | |
738 | next_rxd = IXGBE_RX_DESC_ADV(*rx_ring, i); | |
739 | prefetch(next_rxd); | |
9a799d71 | 740 | cleaned_count++; |
f8212f97 AD |
741 | |
742 | if (adapter->flags & IXGBE_FLAG_RSC_CAPABLE) | |
743 | rsc_count = ixgbe_get_rsc_count(rx_desc); | |
744 | ||
745 | if (rsc_count) { | |
746 | u32 nextp = (staterr & IXGBE_RXDADV_NEXTP_MASK) >> | |
747 | IXGBE_RXDADV_NEXTP_SHIFT; | |
748 | next_buffer = &rx_ring->rx_buffer_info[nextp]; | |
749 | rx_ring->rsc_count += (rsc_count - 1); | |
750 | } else { | |
751 | next_buffer = &rx_ring->rx_buffer_info[i]; | |
752 | } | |
753 | ||
9a799d71 | 754 | if (staterr & IXGBE_RXD_STAT_EOP) { |
f8212f97 AD |
755 | if (skb->prev) |
756 | skb = ixgbe_transform_rsc_queue(skb); | |
9a799d71 AK |
757 | rx_ring->stats.packets++; |
758 | rx_ring->stats.bytes += skb->len; | |
759 | } else { | |
f8212f97 AD |
760 | if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) { |
761 | rx_buffer_info->skb = next_buffer->skb; | |
762 | rx_buffer_info->dma = next_buffer->dma; | |
763 | next_buffer->skb = skb; | |
764 | next_buffer->dma = 0; | |
765 | } else { | |
766 | skb->next = next_buffer->skb; | |
767 | skb->next->prev = skb; | |
768 | } | |
9a799d71 AK |
769 | adapter->non_eop_descs++; |
770 | goto next_desc; | |
771 | } | |
772 | ||
773 | if (staterr & IXGBE_RXDADV_ERR_FRAME_ERR_MASK) { | |
774 | dev_kfree_skb_irq(skb); | |
775 | goto next_desc; | |
776 | } | |
777 | ||
778 | ixgbe_rx_checksum(adapter, staterr, skb); | |
d2f4fbe2 AV |
779 | |
780 | /* probably a little skewed due to removing CRC */ | |
781 | total_rx_bytes += skb->len; | |
782 | total_rx_packets++; | |
783 | ||
74ce8dd2 | 784 | skb->protocol = eth_type_trans(skb, adapter->netdev); |
78b6f4ce | 785 | ixgbe_receive_skb(q_vector, skb, staterr, rx_desc); |
9a799d71 AK |
786 | |
787 | next_desc: | |
788 | rx_desc->wb.upper.status_error = 0; | |
789 | ||
790 | /* return some buffers to hardware, one at a time is too slow */ | |
791 | if (cleaned_count >= IXGBE_RX_BUFFER_WRITE) { | |
792 | ixgbe_alloc_rx_buffers(adapter, rx_ring, cleaned_count); | |
793 | cleaned_count = 0; | |
794 | } | |
795 | ||
796 | /* use prefetched values */ | |
797 | rx_desc = next_rxd; | |
f8212f97 | 798 | rx_buffer_info = &rx_ring->rx_buffer_info[i]; |
9a799d71 AK |
799 | |
800 | staterr = le32_to_cpu(rx_desc->wb.upper.status_error); | |
177db6ff MC |
801 | } |
802 | ||
9a799d71 AK |
803 | rx_ring->next_to_clean = i; |
804 | cleaned_count = IXGBE_DESC_UNUSED(rx_ring); | |
805 | ||
806 | if (cleaned_count) | |
807 | ixgbe_alloc_rx_buffers(adapter, rx_ring, cleaned_count); | |
808 | ||
f494e8fa AV |
809 | rx_ring->total_packets += total_rx_packets; |
810 | rx_ring->total_bytes += total_rx_bytes; | |
811 | adapter->net_stats.rx_bytes += total_rx_bytes; | |
812 | adapter->net_stats.rx_packets += total_rx_packets; | |
813 | ||
9a799d71 AK |
814 | return cleaned; |
815 | } | |
816 | ||
021230d4 | 817 | static int ixgbe_clean_rxonly(struct napi_struct *, int); |
9a799d71 AK |
818 | /** |
819 | * ixgbe_configure_msix - Configure MSI-X hardware | |
820 | * @adapter: board private structure | |
821 | * | |
822 | * ixgbe_configure_msix sets up the hardware to properly generate MSI-X | |
823 | * interrupts. | |
824 | **/ | |
825 | static void ixgbe_configure_msix(struct ixgbe_adapter *adapter) | |
826 | { | |
021230d4 AV |
827 | struct ixgbe_q_vector *q_vector; |
828 | int i, j, q_vectors, v_idx, r_idx; | |
829 | u32 mask; | |
9a799d71 | 830 | |
021230d4 | 831 | q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS; |
9a799d71 | 832 | |
4df10466 JB |
833 | /* |
834 | * Populate the IVAR table and set the ITR values to the | |
021230d4 AV |
835 | * corresponding register. |
836 | */ | |
837 | for (v_idx = 0; v_idx < q_vectors; v_idx++) { | |
838 | q_vector = &adapter->q_vector[v_idx]; | |
839 | /* XXX for_each_bit(...) */ | |
840 | r_idx = find_first_bit(q_vector->rxr_idx, | |
b4617240 | 841 | adapter->num_rx_queues); |
021230d4 AV |
842 | |
843 | for (i = 0; i < q_vector->rxr_count; i++) { | |
844 | j = adapter->rx_ring[r_idx].reg_idx; | |
e8e26350 | 845 | ixgbe_set_ivar(adapter, 0, j, v_idx); |
021230d4 | 846 | r_idx = find_next_bit(q_vector->rxr_idx, |
b4617240 PW |
847 | adapter->num_rx_queues, |
848 | r_idx + 1); | |
021230d4 AV |
849 | } |
850 | r_idx = find_first_bit(q_vector->txr_idx, | |
b4617240 | 851 | adapter->num_tx_queues); |
021230d4 AV |
852 | |
853 | for (i = 0; i < q_vector->txr_count; i++) { | |
854 | j = adapter->tx_ring[r_idx].reg_idx; | |
e8e26350 | 855 | ixgbe_set_ivar(adapter, 1, j, v_idx); |
021230d4 | 856 | r_idx = find_next_bit(q_vector->txr_idx, |
b4617240 PW |
857 | adapter->num_tx_queues, |
858 | r_idx + 1); | |
021230d4 AV |
859 | } |
860 | ||
30efa5a3 | 861 | /* if this is a tx only vector halve the interrupt rate */ |
021230d4 | 862 | if (q_vector->txr_count && !q_vector->rxr_count) |
30efa5a3 | 863 | q_vector->eitr = (adapter->eitr_param >> 1); |
509ee935 | 864 | else if (q_vector->rxr_count) |
30efa5a3 JB |
865 | /* rx only */ |
866 | q_vector->eitr = adapter->eitr_param; | |
021230d4 | 867 | |
509ee935 | 868 | /* |
4df10466 | 869 | * since this is initial set up don't need to call |
509ee935 JB |
870 | * ixgbe_write_eitr helper |
871 | */ | |
021230d4 | 872 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITR(v_idx), |
b4617240 | 873 | EITR_INTS_PER_SEC_TO_REG(q_vector->eitr)); |
9a799d71 AK |
874 | } |
875 | ||
e8e26350 PW |
876 | if (adapter->hw.mac.type == ixgbe_mac_82598EB) |
877 | ixgbe_set_ivar(adapter, -1, IXGBE_IVAR_OTHER_CAUSES_INDEX, | |
878 | v_idx); | |
879 | else if (adapter->hw.mac.type == ixgbe_mac_82599EB) | |
880 | ixgbe_set_ivar(adapter, -1, 1, v_idx); | |
021230d4 AV |
881 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITR(v_idx), 1950); |
882 | ||
41fb9248 | 883 | /* set up to autoclear timer, and the vectors */ |
021230d4 | 884 | mask = IXGBE_EIMS_ENABLE_MASK; |
41fb9248 | 885 | mask &= ~(IXGBE_EIMS_OTHER | IXGBE_EIMS_LSC); |
021230d4 | 886 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIAC, mask); |
9a799d71 AK |
887 | } |
888 | ||
f494e8fa AV |
889 | enum latency_range { |
890 | lowest_latency = 0, | |
891 | low_latency = 1, | |
892 | bulk_latency = 2, | |
893 | latency_invalid = 255 | |
894 | }; | |
895 | ||
896 | /** | |
897 | * ixgbe_update_itr - update the dynamic ITR value based on statistics | |
898 | * @adapter: pointer to adapter | |
899 | * @eitr: eitr setting (ints per sec) to give last timeslice | |
900 | * @itr_setting: current throttle rate in ints/second | |
901 | * @packets: the number of packets during this measurement interval | |
902 | * @bytes: the number of bytes during this measurement interval | |
903 | * | |
904 | * Stores a new ITR value based on packets and byte | |
905 | * counts during the last interrupt. The advantage of per interrupt | |
906 | * computation is faster updates and more accurate ITR for the current | |
907 | * traffic pattern. Constants in this function were computed | |
908 | * based on theoretical maximum wire speed and thresholds were set based | |
909 | * on testing data as well as attempting to minimize response time | |
910 | * while increasing bulk throughput. | |
911 | * this functionality is controlled by the InterruptThrottleRate module | |
912 | * parameter (see ixgbe_param.c) | |
913 | **/ | |
914 | static u8 ixgbe_update_itr(struct ixgbe_adapter *adapter, | |
b4617240 PW |
915 | u32 eitr, u8 itr_setting, |
916 | int packets, int bytes) | |
f494e8fa AV |
917 | { |
918 | unsigned int retval = itr_setting; | |
919 | u32 timepassed_us; | |
920 | u64 bytes_perint; | |
921 | ||
922 | if (packets == 0) | |
923 | goto update_itr_done; | |
924 | ||
925 | ||
926 | /* simple throttlerate management | |
927 | * 0-20MB/s lowest (100000 ints/s) | |
928 | * 20-100MB/s low (20000 ints/s) | |
929 | * 100-1249MB/s bulk (8000 ints/s) | |
930 | */ | |
931 | /* what was last interrupt timeslice? */ | |
932 | timepassed_us = 1000000/eitr; | |
933 | bytes_perint = bytes / timepassed_us; /* bytes/usec */ | |
934 | ||
935 | switch (itr_setting) { | |
936 | case lowest_latency: | |
937 | if (bytes_perint > adapter->eitr_low) | |
938 | retval = low_latency; | |
939 | break; | |
940 | case low_latency: | |
941 | if (bytes_perint > adapter->eitr_high) | |
942 | retval = bulk_latency; | |
943 | else if (bytes_perint <= adapter->eitr_low) | |
944 | retval = lowest_latency; | |
945 | break; | |
946 | case bulk_latency: | |
947 | if (bytes_perint <= adapter->eitr_high) | |
948 | retval = low_latency; | |
949 | break; | |
950 | } | |
951 | ||
952 | update_itr_done: | |
953 | return retval; | |
954 | } | |
955 | ||
509ee935 JB |
956 | /** |
957 | * ixgbe_write_eitr - write EITR register in hardware specific way | |
958 | * @adapter: pointer to adapter struct | |
959 | * @v_idx: vector index into q_vector array | |
960 | * @itr_reg: new value to be written in *register* format, not ints/s | |
961 | * | |
962 | * This function is made to be called by ethtool and by the driver | |
963 | * when it needs to update EITR registers at runtime. Hardware | |
964 | * specific quirks/differences are taken care of here. | |
965 | */ | |
966 | void ixgbe_write_eitr(struct ixgbe_adapter *adapter, int v_idx, u32 itr_reg) | |
967 | { | |
968 | struct ixgbe_hw *hw = &adapter->hw; | |
969 | if (adapter->hw.mac.type == ixgbe_mac_82598EB) { | |
970 | /* must write high and low 16 bits to reset counter */ | |
971 | itr_reg |= (itr_reg << 16); | |
972 | } else if (adapter->hw.mac.type == ixgbe_mac_82599EB) { | |
973 | /* | |
974 | * set the WDIS bit to not clear the timer bits and cause an | |
975 | * immediate assertion of the interrupt | |
976 | */ | |
977 | itr_reg |= IXGBE_EITR_CNT_WDIS; | |
978 | } | |
979 | IXGBE_WRITE_REG(hw, IXGBE_EITR(v_idx), itr_reg); | |
980 | } | |
981 | ||
f494e8fa AV |
982 | static void ixgbe_set_itr_msix(struct ixgbe_q_vector *q_vector) |
983 | { | |
984 | struct ixgbe_adapter *adapter = q_vector->adapter; | |
f494e8fa AV |
985 | u32 new_itr; |
986 | u8 current_itr, ret_itr; | |
987 | int i, r_idx, v_idx = ((void *)q_vector - (void *)(adapter->q_vector)) / | |
b4617240 | 988 | sizeof(struct ixgbe_q_vector); |
f494e8fa AV |
989 | struct ixgbe_ring *rx_ring, *tx_ring; |
990 | ||
991 | r_idx = find_first_bit(q_vector->txr_idx, adapter->num_tx_queues); | |
992 | for (i = 0; i < q_vector->txr_count; i++) { | |
993 | tx_ring = &(adapter->tx_ring[r_idx]); | |
994 | ret_itr = ixgbe_update_itr(adapter, q_vector->eitr, | |
b4617240 PW |
995 | q_vector->tx_itr, |
996 | tx_ring->total_packets, | |
997 | tx_ring->total_bytes); | |
f494e8fa AV |
998 | /* if the result for this queue would decrease interrupt |
999 | * rate for this vector then use that result */ | |
30efa5a3 | 1000 | q_vector->tx_itr = ((q_vector->tx_itr > ret_itr) ? |
b4617240 | 1001 | q_vector->tx_itr - 1 : ret_itr); |
f494e8fa | 1002 | r_idx = find_next_bit(q_vector->txr_idx, adapter->num_tx_queues, |
b4617240 | 1003 | r_idx + 1); |
f494e8fa AV |
1004 | } |
1005 | ||
1006 | r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues); | |
1007 | for (i = 0; i < q_vector->rxr_count; i++) { | |
1008 | rx_ring = &(adapter->rx_ring[r_idx]); | |
1009 | ret_itr = ixgbe_update_itr(adapter, q_vector->eitr, | |
b4617240 PW |
1010 | q_vector->rx_itr, |
1011 | rx_ring->total_packets, | |
1012 | rx_ring->total_bytes); | |
f494e8fa AV |
1013 | /* if the result for this queue would decrease interrupt |
1014 | * rate for this vector then use that result */ | |
30efa5a3 | 1015 | q_vector->rx_itr = ((q_vector->rx_itr > ret_itr) ? |
b4617240 | 1016 | q_vector->rx_itr - 1 : ret_itr); |
f494e8fa | 1017 | r_idx = find_next_bit(q_vector->rxr_idx, adapter->num_rx_queues, |
b4617240 | 1018 | r_idx + 1); |
f494e8fa AV |
1019 | } |
1020 | ||
30efa5a3 | 1021 | current_itr = max(q_vector->rx_itr, q_vector->tx_itr); |
f494e8fa AV |
1022 | |
1023 | switch (current_itr) { | |
1024 | /* counts and packets in update_itr are dependent on these numbers */ | |
1025 | case lowest_latency: | |
1026 | new_itr = 100000; | |
1027 | break; | |
1028 | case low_latency: | |
1029 | new_itr = 20000; /* aka hwitr = ~200 */ | |
1030 | break; | |
1031 | case bulk_latency: | |
1032 | default: | |
1033 | new_itr = 8000; | |
1034 | break; | |
1035 | } | |
1036 | ||
1037 | if (new_itr != q_vector->eitr) { | |
1038 | u32 itr_reg; | |
509ee935 JB |
1039 | |
1040 | /* save the algorithm value here, not the smoothed one */ | |
1041 | q_vector->eitr = new_itr; | |
f494e8fa AV |
1042 | /* do an exponential smoothing */ |
1043 | new_itr = ((q_vector->eitr * 90)/100) + ((new_itr * 10)/100); | |
f494e8fa | 1044 | itr_reg = EITR_INTS_PER_SEC_TO_REG(new_itr); |
509ee935 | 1045 | ixgbe_write_eitr(adapter, v_idx, itr_reg); |
f494e8fa AV |
1046 | } |
1047 | ||
1048 | return; | |
1049 | } | |
1050 | ||
0befdb3e JB |
1051 | static void ixgbe_check_fan_failure(struct ixgbe_adapter *adapter, u32 eicr) |
1052 | { | |
1053 | struct ixgbe_hw *hw = &adapter->hw; | |
1054 | ||
1055 | if ((adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) && | |
1056 | (eicr & IXGBE_EICR_GPI_SDP1)) { | |
1057 | DPRINTK(PROBE, CRIT, "Fan has stopped, replace the adapter\n"); | |
1058 | /* write to clear the interrupt */ | |
1059 | IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_GPI_SDP1); | |
1060 | } | |
1061 | } | |
cf8280ee | 1062 | |
e8e26350 PW |
1063 | static void ixgbe_check_sfp_event(struct ixgbe_adapter *adapter, u32 eicr) |
1064 | { | |
1065 | struct ixgbe_hw *hw = &adapter->hw; | |
1066 | ||
1067 | if (eicr & IXGBE_EICR_GPI_SDP1) { | |
1068 | /* Clear the interrupt */ | |
1069 | IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_GPI_SDP1); | |
1070 | schedule_work(&adapter->multispeed_fiber_task); | |
1071 | } else if (eicr & IXGBE_EICR_GPI_SDP2) { | |
1072 | /* Clear the interrupt */ | |
1073 | IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_GPI_SDP2); | |
1074 | schedule_work(&adapter->sfp_config_module_task); | |
1075 | } else { | |
1076 | /* Interrupt isn't for us... */ | |
1077 | return; | |
1078 | } | |
1079 | } | |
1080 | ||
cf8280ee JB |
1081 | static void ixgbe_check_lsc(struct ixgbe_adapter *adapter) |
1082 | { | |
1083 | struct ixgbe_hw *hw = &adapter->hw; | |
1084 | ||
1085 | adapter->lsc_int++; | |
1086 | adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE; | |
1087 | adapter->link_check_timeout = jiffies; | |
1088 | if (!test_bit(__IXGBE_DOWN, &adapter->state)) { | |
1089 | IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_EIMC_LSC); | |
1090 | schedule_work(&adapter->watchdog_task); | |
1091 | } | |
1092 | } | |
1093 | ||
9a799d71 AK |
1094 | static irqreturn_t ixgbe_msix_lsc(int irq, void *data) |
1095 | { | |
1096 | struct net_device *netdev = data; | |
1097 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
1098 | struct ixgbe_hw *hw = &adapter->hw; | |
54037505 DS |
1099 | u32 eicr; |
1100 | ||
1101 | /* | |
1102 | * Workaround for Silicon errata. Use clear-by-write instead | |
1103 | * of clear-by-read. Reading with EICS will return the | |
1104 | * interrupt causes without clearing, which later be done | |
1105 | * with the write to EICR. | |
1106 | */ | |
1107 | eicr = IXGBE_READ_REG(hw, IXGBE_EICS); | |
1108 | IXGBE_WRITE_REG(hw, IXGBE_EICR, eicr); | |
9a799d71 | 1109 | |
cf8280ee JB |
1110 | if (eicr & IXGBE_EICR_LSC) |
1111 | ixgbe_check_lsc(adapter); | |
d4f80882 | 1112 | |
e8e26350 PW |
1113 | if (hw->mac.type == ixgbe_mac_82598EB) |
1114 | ixgbe_check_fan_failure(adapter, eicr); | |
0befdb3e | 1115 | |
e8e26350 PW |
1116 | if (hw->mac.type == ixgbe_mac_82599EB) |
1117 | ixgbe_check_sfp_event(adapter, eicr); | |
d4f80882 AV |
1118 | if (!test_bit(__IXGBE_DOWN, &adapter->state)) |
1119 | IXGBE_WRITE_REG(hw, IXGBE_EIMS, IXGBE_EIMS_OTHER); | |
9a799d71 AK |
1120 | |
1121 | return IRQ_HANDLED; | |
1122 | } | |
1123 | ||
1124 | static irqreturn_t ixgbe_msix_clean_tx(int irq, void *data) | |
1125 | { | |
021230d4 AV |
1126 | struct ixgbe_q_vector *q_vector = data; |
1127 | struct ixgbe_adapter *adapter = q_vector->adapter; | |
3a581073 | 1128 | struct ixgbe_ring *tx_ring; |
021230d4 AV |
1129 | int i, r_idx; |
1130 | ||
1131 | if (!q_vector->txr_count) | |
1132 | return IRQ_HANDLED; | |
1133 | ||
1134 | r_idx = find_first_bit(q_vector->txr_idx, adapter->num_tx_queues); | |
1135 | for (i = 0; i < q_vector->txr_count; i++) { | |
3a581073 | 1136 | tx_ring = &(adapter->tx_ring[r_idx]); |
5dd2d332 | 1137 | #ifdef CONFIG_IXGBE_DCA |
bd0362dd | 1138 | if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) |
3a581073 | 1139 | ixgbe_update_tx_dca(adapter, tx_ring); |
bd0362dd | 1140 | #endif |
3a581073 JB |
1141 | tx_ring->total_bytes = 0; |
1142 | tx_ring->total_packets = 0; | |
1143 | ixgbe_clean_tx_irq(adapter, tx_ring); | |
021230d4 | 1144 | r_idx = find_next_bit(q_vector->txr_idx, adapter->num_tx_queues, |
b4617240 | 1145 | r_idx + 1); |
021230d4 | 1146 | } |
9a799d71 | 1147 | |
9a799d71 AK |
1148 | return IRQ_HANDLED; |
1149 | } | |
1150 | ||
021230d4 AV |
1151 | /** |
1152 | * ixgbe_msix_clean_rx - single unshared vector rx clean (all queues) | |
1153 | * @irq: unused | |
1154 | * @data: pointer to our q_vector struct for this interrupt vector | |
1155 | **/ | |
9a799d71 AK |
1156 | static irqreturn_t ixgbe_msix_clean_rx(int irq, void *data) |
1157 | { | |
021230d4 AV |
1158 | struct ixgbe_q_vector *q_vector = data; |
1159 | struct ixgbe_adapter *adapter = q_vector->adapter; | |
3a581073 | 1160 | struct ixgbe_ring *rx_ring; |
021230d4 | 1161 | int r_idx; |
30efa5a3 | 1162 | int i; |
021230d4 AV |
1163 | |
1164 | r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues); | |
30efa5a3 JB |
1165 | for (i = 0; i < q_vector->rxr_count; i++) { |
1166 | rx_ring = &(adapter->rx_ring[r_idx]); | |
1167 | rx_ring->total_bytes = 0; | |
1168 | rx_ring->total_packets = 0; | |
1169 | r_idx = find_next_bit(q_vector->rxr_idx, adapter->num_rx_queues, | |
1170 | r_idx + 1); | |
1171 | } | |
1172 | ||
021230d4 AV |
1173 | if (!q_vector->rxr_count) |
1174 | return IRQ_HANDLED; | |
1175 | ||
30efa5a3 | 1176 | r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues); |
3a581073 | 1177 | rx_ring = &(adapter->rx_ring[r_idx]); |
021230d4 | 1178 | /* disable interrupts on this vector only */ |
835462fc NS |
1179 | if (adapter->hw.mac.type == ixgbe_mac_82598EB) |
1180 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, rx_ring->v_idx); | |
1181 | else if (rx_ring->v_idx & 0xFFFFFFFF) | |
1182 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC_EX(0), rx_ring->v_idx); | |
1183 | else | |
1184 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC_EX(1), | |
1185 | (rx_ring->v_idx >> 32)); | |
288379f0 | 1186 | napi_schedule(&q_vector->napi); |
021230d4 AV |
1187 | |
1188 | return IRQ_HANDLED; | |
1189 | } | |
1190 | ||
1191 | static irqreturn_t ixgbe_msix_clean_many(int irq, void *data) | |
1192 | { | |
1193 | ixgbe_msix_clean_rx(irq, data); | |
1194 | ixgbe_msix_clean_tx(irq, data); | |
9a799d71 | 1195 | |
9a799d71 AK |
1196 | return IRQ_HANDLED; |
1197 | } | |
1198 | ||
835462fc NS |
1199 | static inline void ixgbe_irq_enable_queues(struct ixgbe_adapter *adapter, |
1200 | u64 qmask) | |
1201 | { | |
1202 | u32 mask; | |
1203 | ||
1204 | if (adapter->hw.mac.type == ixgbe_mac_82598EB) { | |
1205 | mask = (IXGBE_EIMS_RTX_QUEUE & qmask); | |
1206 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS, mask); | |
1207 | } else { | |
1208 | mask = (qmask & 0xFFFFFFFF); | |
1209 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS_EX(0), mask); | |
1210 | mask = (qmask >> 32); | |
1211 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS_EX(1), mask); | |
1212 | } | |
1213 | /* skip the flush */ | |
1214 | } | |
1215 | ||
021230d4 AV |
1216 | /** |
1217 | * ixgbe_clean_rxonly - msix (aka one shot) rx clean routine | |
1218 | * @napi: napi struct with our devices info in it | |
1219 | * @budget: amount of work driver is allowed to do this pass, in packets | |
1220 | * | |
f0848276 JB |
1221 | * This function is optimized for cleaning one queue only on a single |
1222 | * q_vector!!! | |
021230d4 | 1223 | **/ |
9a799d71 AK |
1224 | static int ixgbe_clean_rxonly(struct napi_struct *napi, int budget) |
1225 | { | |
021230d4 | 1226 | struct ixgbe_q_vector *q_vector = |
b4617240 | 1227 | container_of(napi, struct ixgbe_q_vector, napi); |
021230d4 | 1228 | struct ixgbe_adapter *adapter = q_vector->adapter; |
f0848276 | 1229 | struct ixgbe_ring *rx_ring = NULL; |
9a799d71 | 1230 | int work_done = 0; |
021230d4 | 1231 | long r_idx; |
9a799d71 | 1232 | |
021230d4 | 1233 | r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues); |
3a581073 | 1234 | rx_ring = &(adapter->rx_ring[r_idx]); |
5dd2d332 | 1235 | #ifdef CONFIG_IXGBE_DCA |
bd0362dd | 1236 | if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) |
3a581073 | 1237 | ixgbe_update_rx_dca(adapter, rx_ring); |
bd0362dd | 1238 | #endif |
9a799d71 | 1239 | |
78b6f4ce | 1240 | ixgbe_clean_rx_irq(q_vector, rx_ring, &work_done, budget); |
9a799d71 | 1241 | |
021230d4 AV |
1242 | /* If all Rx work done, exit the polling mode */ |
1243 | if (work_done < budget) { | |
288379f0 | 1244 | napi_complete(napi); |
509ee935 | 1245 | if (adapter->itr_setting & 1) |
f494e8fa | 1246 | ixgbe_set_itr_msix(q_vector); |
9a799d71 | 1247 | if (!test_bit(__IXGBE_DOWN, &adapter->state)) |
835462fc | 1248 | ixgbe_irq_enable_queues(adapter, rx_ring->v_idx); |
9a799d71 AK |
1249 | } |
1250 | ||
1251 | return work_done; | |
1252 | } | |
1253 | ||
f0848276 JB |
1254 | /** |
1255 | * ixgbe_clean_rxonly_many - msix (aka one shot) rx clean routine | |
1256 | * @napi: napi struct with our devices info in it | |
1257 | * @budget: amount of work driver is allowed to do this pass, in packets | |
1258 | * | |
1259 | * This function will clean more than one rx queue associated with a | |
1260 | * q_vector. | |
1261 | **/ | |
1262 | static int ixgbe_clean_rxonly_many(struct napi_struct *napi, int budget) | |
1263 | { | |
1264 | struct ixgbe_q_vector *q_vector = | |
1265 | container_of(napi, struct ixgbe_q_vector, napi); | |
1266 | struct ixgbe_adapter *adapter = q_vector->adapter; | |
f0848276 JB |
1267 | struct ixgbe_ring *rx_ring = NULL; |
1268 | int work_done = 0, i; | |
1269 | long r_idx; | |
835462fc | 1270 | u64 enable_mask = 0; |
f0848276 JB |
1271 | |
1272 | /* attempt to distribute budget to each queue fairly, but don't allow | |
1273 | * the budget to go below 1 because we'll exit polling */ | |
1274 | budget /= (q_vector->rxr_count ?: 1); | |
1275 | budget = max(budget, 1); | |
1276 | r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues); | |
1277 | for (i = 0; i < q_vector->rxr_count; i++) { | |
1278 | rx_ring = &(adapter->rx_ring[r_idx]); | |
5dd2d332 | 1279 | #ifdef CONFIG_IXGBE_DCA |
f0848276 JB |
1280 | if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) |
1281 | ixgbe_update_rx_dca(adapter, rx_ring); | |
1282 | #endif | |
78b6f4ce | 1283 | ixgbe_clean_rx_irq(q_vector, rx_ring, &work_done, budget); |
f0848276 JB |
1284 | enable_mask |= rx_ring->v_idx; |
1285 | r_idx = find_next_bit(q_vector->rxr_idx, adapter->num_rx_queues, | |
1286 | r_idx + 1); | |
1287 | } | |
1288 | ||
1289 | r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues); | |
1290 | rx_ring = &(adapter->rx_ring[r_idx]); | |
1291 | /* If all Rx work done, exit the polling mode */ | |
7f821875 | 1292 | if (work_done < budget) { |
288379f0 | 1293 | napi_complete(napi); |
509ee935 | 1294 | if (adapter->itr_setting & 1) |
f0848276 JB |
1295 | ixgbe_set_itr_msix(q_vector); |
1296 | if (!test_bit(__IXGBE_DOWN, &adapter->state)) | |
835462fc | 1297 | ixgbe_irq_enable_queues(adapter, enable_mask); |
f0848276 JB |
1298 | return 0; |
1299 | } | |
1300 | ||
1301 | return work_done; | |
1302 | } | |
021230d4 | 1303 | static inline void map_vector_to_rxq(struct ixgbe_adapter *a, int v_idx, |
b4617240 | 1304 | int r_idx) |
021230d4 AV |
1305 | { |
1306 | a->q_vector[v_idx].adapter = a; | |
1307 | set_bit(r_idx, a->q_vector[v_idx].rxr_idx); | |
1308 | a->q_vector[v_idx].rxr_count++; | |
1309 | a->rx_ring[r_idx].v_idx = 1 << v_idx; | |
1310 | } | |
1311 | ||
1312 | static inline void map_vector_to_txq(struct ixgbe_adapter *a, int v_idx, | |
b4617240 | 1313 | int r_idx) |
021230d4 AV |
1314 | { |
1315 | a->q_vector[v_idx].adapter = a; | |
1316 | set_bit(r_idx, a->q_vector[v_idx].txr_idx); | |
1317 | a->q_vector[v_idx].txr_count++; | |
1318 | a->tx_ring[r_idx].v_idx = 1 << v_idx; | |
1319 | } | |
1320 | ||
9a799d71 | 1321 | /** |
021230d4 AV |
1322 | * ixgbe_map_rings_to_vectors - Maps descriptor rings to vectors |
1323 | * @adapter: board private structure to initialize | |
1324 | * @vectors: allotted vector count for descriptor rings | |
9a799d71 | 1325 | * |
021230d4 AV |
1326 | * This function maps descriptor rings to the queue-specific vectors |
1327 | * we were allotted through the MSI-X enabling code. Ideally, we'd have | |
1328 | * one vector per ring/queue, but on a constrained vector budget, we | |
1329 | * group the rings as "efficiently" as possible. You would add new | |
1330 | * mapping configurations in here. | |
9a799d71 | 1331 | **/ |
021230d4 | 1332 | static int ixgbe_map_rings_to_vectors(struct ixgbe_adapter *adapter, |
b4617240 | 1333 | int vectors) |
021230d4 AV |
1334 | { |
1335 | int v_start = 0; | |
1336 | int rxr_idx = 0, txr_idx = 0; | |
1337 | int rxr_remaining = adapter->num_rx_queues; | |
1338 | int txr_remaining = adapter->num_tx_queues; | |
1339 | int i, j; | |
1340 | int rqpv, tqpv; | |
1341 | int err = 0; | |
1342 | ||
1343 | /* No mapping required if MSI-X is disabled. */ | |
1344 | if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED)) | |
1345 | goto out; | |
9a799d71 | 1346 | |
021230d4 AV |
1347 | /* |
1348 | * The ideal configuration... | |
1349 | * We have enough vectors to map one per queue. | |
1350 | */ | |
1351 | if (vectors == adapter->num_rx_queues + adapter->num_tx_queues) { | |
1352 | for (; rxr_idx < rxr_remaining; v_start++, rxr_idx++) | |
1353 | map_vector_to_rxq(adapter, v_start, rxr_idx); | |
9a799d71 | 1354 | |
021230d4 AV |
1355 | for (; txr_idx < txr_remaining; v_start++, txr_idx++) |
1356 | map_vector_to_txq(adapter, v_start, txr_idx); | |
9a799d71 | 1357 | |
9a799d71 | 1358 | goto out; |
021230d4 | 1359 | } |
9a799d71 | 1360 | |
021230d4 AV |
1361 | /* |
1362 | * If we don't have enough vectors for a 1-to-1 | |
1363 | * mapping, we'll have to group them so there are | |
1364 | * multiple queues per vector. | |
1365 | */ | |
1366 | /* Re-adjusting *qpv takes care of the remainder. */ | |
1367 | for (i = v_start; i < vectors; i++) { | |
1368 | rqpv = DIV_ROUND_UP(rxr_remaining, vectors - i); | |
1369 | for (j = 0; j < rqpv; j++) { | |
1370 | map_vector_to_rxq(adapter, i, rxr_idx); | |
1371 | rxr_idx++; | |
1372 | rxr_remaining--; | |
1373 | } | |
1374 | } | |
1375 | for (i = v_start; i < vectors; i++) { | |
1376 | tqpv = DIV_ROUND_UP(txr_remaining, vectors - i); | |
1377 | for (j = 0; j < tqpv; j++) { | |
1378 | map_vector_to_txq(adapter, i, txr_idx); | |
1379 | txr_idx++; | |
1380 | txr_remaining--; | |
9a799d71 | 1381 | } |
9a799d71 AK |
1382 | } |
1383 | ||
021230d4 AV |
1384 | out: |
1385 | return err; | |
1386 | } | |
1387 | ||
1388 | /** | |
1389 | * ixgbe_request_msix_irqs - Initialize MSI-X interrupts | |
1390 | * @adapter: board private structure | |
1391 | * | |
1392 | * ixgbe_request_msix_irqs allocates MSI-X vectors and requests | |
1393 | * interrupts from the kernel. | |
1394 | **/ | |
1395 | static int ixgbe_request_msix_irqs(struct ixgbe_adapter *adapter) | |
1396 | { | |
1397 | struct net_device *netdev = adapter->netdev; | |
1398 | irqreturn_t (*handler)(int, void *); | |
1399 | int i, vector, q_vectors, err; | |
cb13fc20 | 1400 | int ri=0, ti=0; |
021230d4 AV |
1401 | |
1402 | /* Decrement for Other and TCP Timer vectors */ | |
1403 | q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS; | |
1404 | ||
1405 | /* Map the Tx/Rx rings to the vectors we were allotted. */ | |
1406 | err = ixgbe_map_rings_to_vectors(adapter, q_vectors); | |
1407 | if (err) | |
1408 | goto out; | |
1409 | ||
1410 | #define SET_HANDLER(_v) ((!(_v)->rxr_count) ? &ixgbe_msix_clean_tx : \ | |
b4617240 PW |
1411 | (!(_v)->txr_count) ? &ixgbe_msix_clean_rx : \ |
1412 | &ixgbe_msix_clean_many) | |
021230d4 AV |
1413 | for (vector = 0; vector < q_vectors; vector++) { |
1414 | handler = SET_HANDLER(&adapter->q_vector[vector]); | |
cb13fc20 RO |
1415 | |
1416 | if(handler == &ixgbe_msix_clean_rx) { | |
1417 | sprintf(adapter->name[vector], "%s-%s-%d", | |
1418 | netdev->name, "rx", ri++); | |
1419 | } | |
1420 | else if(handler == &ixgbe_msix_clean_tx) { | |
1421 | sprintf(adapter->name[vector], "%s-%s-%d", | |
1422 | netdev->name, "tx", ti++); | |
1423 | } | |
1424 | else | |
1425 | sprintf(adapter->name[vector], "%s-%s-%d", | |
1426 | netdev->name, "TxRx", vector); | |
1427 | ||
021230d4 | 1428 | err = request_irq(adapter->msix_entries[vector].vector, |
b4617240 PW |
1429 | handler, 0, adapter->name[vector], |
1430 | &(adapter->q_vector[vector])); | |
9a799d71 AK |
1431 | if (err) { |
1432 | DPRINTK(PROBE, ERR, | |
b4617240 PW |
1433 | "request_irq failed for MSIX interrupt " |
1434 | "Error: %d\n", err); | |
021230d4 | 1435 | goto free_queue_irqs; |
9a799d71 | 1436 | } |
9a799d71 AK |
1437 | } |
1438 | ||
021230d4 AV |
1439 | sprintf(adapter->name[vector], "%s:lsc", netdev->name); |
1440 | err = request_irq(adapter->msix_entries[vector].vector, | |
b4617240 | 1441 | &ixgbe_msix_lsc, 0, adapter->name[vector], netdev); |
9a799d71 AK |
1442 | if (err) { |
1443 | DPRINTK(PROBE, ERR, | |
1444 | "request_irq for msix_lsc failed: %d\n", err); | |
021230d4 | 1445 | goto free_queue_irqs; |
9a799d71 AK |
1446 | } |
1447 | ||
9a799d71 AK |
1448 | return 0; |
1449 | ||
021230d4 AV |
1450 | free_queue_irqs: |
1451 | for (i = vector - 1; i >= 0; i--) | |
1452 | free_irq(adapter->msix_entries[--vector].vector, | |
b4617240 | 1453 | &(adapter->q_vector[i])); |
021230d4 AV |
1454 | adapter->flags &= ~IXGBE_FLAG_MSIX_ENABLED; |
1455 | pci_disable_msix(adapter->pdev); | |
9a799d71 AK |
1456 | kfree(adapter->msix_entries); |
1457 | adapter->msix_entries = NULL; | |
021230d4 | 1458 | out: |
9a799d71 AK |
1459 | return err; |
1460 | } | |
1461 | ||
f494e8fa AV |
1462 | static void ixgbe_set_itr(struct ixgbe_adapter *adapter) |
1463 | { | |
f494e8fa AV |
1464 | struct ixgbe_q_vector *q_vector = adapter->q_vector; |
1465 | u8 current_itr; | |
1466 | u32 new_itr = q_vector->eitr; | |
1467 | struct ixgbe_ring *rx_ring = &adapter->rx_ring[0]; | |
1468 | struct ixgbe_ring *tx_ring = &adapter->tx_ring[0]; | |
1469 | ||
30efa5a3 | 1470 | q_vector->tx_itr = ixgbe_update_itr(adapter, new_itr, |
b4617240 PW |
1471 | q_vector->tx_itr, |
1472 | tx_ring->total_packets, | |
1473 | tx_ring->total_bytes); | |
30efa5a3 | 1474 | q_vector->rx_itr = ixgbe_update_itr(adapter, new_itr, |
b4617240 PW |
1475 | q_vector->rx_itr, |
1476 | rx_ring->total_packets, | |
1477 | rx_ring->total_bytes); | |
f494e8fa | 1478 | |
30efa5a3 | 1479 | current_itr = max(q_vector->rx_itr, q_vector->tx_itr); |
f494e8fa AV |
1480 | |
1481 | switch (current_itr) { | |
1482 | /* counts and packets in update_itr are dependent on these numbers */ | |
1483 | case lowest_latency: | |
1484 | new_itr = 100000; | |
1485 | break; | |
1486 | case low_latency: | |
1487 | new_itr = 20000; /* aka hwitr = ~200 */ | |
1488 | break; | |
1489 | case bulk_latency: | |
1490 | new_itr = 8000; | |
1491 | break; | |
1492 | default: | |
1493 | break; | |
1494 | } | |
1495 | ||
1496 | if (new_itr != q_vector->eitr) { | |
1497 | u32 itr_reg; | |
509ee935 JB |
1498 | |
1499 | /* save the algorithm value here, not the smoothed one */ | |
1500 | q_vector->eitr = new_itr; | |
f494e8fa AV |
1501 | /* do an exponential smoothing */ |
1502 | new_itr = ((q_vector->eitr * 90)/100) + ((new_itr * 10)/100); | |
f494e8fa | 1503 | itr_reg = EITR_INTS_PER_SEC_TO_REG(new_itr); |
509ee935 | 1504 | ixgbe_write_eitr(adapter, 0, itr_reg); |
f494e8fa AV |
1505 | } |
1506 | ||
1507 | return; | |
1508 | } | |
1509 | ||
79aefa45 AD |
1510 | /** |
1511 | * ixgbe_irq_enable - Enable default interrupt generation settings | |
1512 | * @adapter: board private structure | |
1513 | **/ | |
1514 | static inline void ixgbe_irq_enable(struct ixgbe_adapter *adapter) | |
1515 | { | |
1516 | u32 mask; | |
835462fc NS |
1517 | |
1518 | mask = (IXGBE_EIMS_ENABLE_MASK & ~IXGBE_EIMS_RTX_QUEUE); | |
6ab33d51 DM |
1519 | if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) |
1520 | mask |= IXGBE_EIMS_GPI_SDP1; | |
e8e26350 | 1521 | if (adapter->hw.mac.type == ixgbe_mac_82599EB) { |
2a41ff81 | 1522 | mask |= IXGBE_EIMS_ECC; |
e8e26350 PW |
1523 | mask |= IXGBE_EIMS_GPI_SDP1; |
1524 | mask |= IXGBE_EIMS_GPI_SDP2; | |
1525 | } | |
1526 | ||
79aefa45 | 1527 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS, mask); |
835462fc | 1528 | ixgbe_irq_enable_queues(adapter, ~0); |
79aefa45 AD |
1529 | IXGBE_WRITE_FLUSH(&adapter->hw); |
1530 | } | |
021230d4 | 1531 | |
9a799d71 | 1532 | /** |
021230d4 | 1533 | * ixgbe_intr - legacy mode Interrupt Handler |
9a799d71 AK |
1534 | * @irq: interrupt number |
1535 | * @data: pointer to a network interface device structure | |
9a799d71 AK |
1536 | **/ |
1537 | static irqreturn_t ixgbe_intr(int irq, void *data) | |
1538 | { | |
1539 | struct net_device *netdev = data; | |
1540 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
1541 | struct ixgbe_hw *hw = &adapter->hw; | |
1542 | u32 eicr; | |
1543 | ||
54037505 DS |
1544 | /* |
1545 | * Workaround for silicon errata. Mask the interrupts | |
1546 | * before the read of EICR. | |
1547 | */ | |
1548 | IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_IRQ_CLEAR_MASK); | |
1549 | ||
021230d4 AV |
1550 | /* for NAPI, using EIAM to auto-mask tx/rx interrupt bits on read |
1551 | * therefore no explict interrupt disable is necessary */ | |
1552 | eicr = IXGBE_READ_REG(hw, IXGBE_EICR); | |
f47cf66e JB |
1553 | if (!eicr) { |
1554 | /* shared interrupt alert! | |
1555 | * make sure interrupts are enabled because the read will | |
1556 | * have disabled interrupts due to EIAM */ | |
1557 | ixgbe_irq_enable(adapter); | |
9a799d71 | 1558 | return IRQ_NONE; /* Not our interrupt */ |
f47cf66e | 1559 | } |
9a799d71 | 1560 | |
cf8280ee JB |
1561 | if (eicr & IXGBE_EICR_LSC) |
1562 | ixgbe_check_lsc(adapter); | |
021230d4 | 1563 | |
e8e26350 PW |
1564 | if (hw->mac.type == ixgbe_mac_82599EB) |
1565 | ixgbe_check_sfp_event(adapter, eicr); | |
1566 | ||
0befdb3e JB |
1567 | ixgbe_check_fan_failure(adapter, eicr); |
1568 | ||
288379f0 | 1569 | if (napi_schedule_prep(&adapter->q_vector[0].napi)) { |
f494e8fa AV |
1570 | adapter->tx_ring[0].total_packets = 0; |
1571 | adapter->tx_ring[0].total_bytes = 0; | |
1572 | adapter->rx_ring[0].total_packets = 0; | |
1573 | adapter->rx_ring[0].total_bytes = 0; | |
021230d4 | 1574 | /* would disable interrupts here but EIAM disabled it */ |
288379f0 | 1575 | __napi_schedule(&adapter->q_vector[0].napi); |
9a799d71 AK |
1576 | } |
1577 | ||
1578 | return IRQ_HANDLED; | |
1579 | } | |
1580 | ||
021230d4 AV |
1581 | static inline void ixgbe_reset_q_vectors(struct ixgbe_adapter *adapter) |
1582 | { | |
1583 | int i, q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS; | |
1584 | ||
1585 | for (i = 0; i < q_vectors; i++) { | |
1586 | struct ixgbe_q_vector *q_vector = &adapter->q_vector[i]; | |
1587 | bitmap_zero(q_vector->rxr_idx, MAX_RX_QUEUES); | |
1588 | bitmap_zero(q_vector->txr_idx, MAX_TX_QUEUES); | |
1589 | q_vector->rxr_count = 0; | |
1590 | q_vector->txr_count = 0; | |
1591 | } | |
1592 | } | |
1593 | ||
9a799d71 AK |
1594 | /** |
1595 | * ixgbe_request_irq - initialize interrupts | |
1596 | * @adapter: board private structure | |
1597 | * | |
1598 | * Attempts to configure interrupts using the best available | |
1599 | * capabilities of the hardware and kernel. | |
1600 | **/ | |
021230d4 | 1601 | static int ixgbe_request_irq(struct ixgbe_adapter *adapter) |
9a799d71 AK |
1602 | { |
1603 | struct net_device *netdev = adapter->netdev; | |
021230d4 | 1604 | int err; |
9a799d71 | 1605 | |
021230d4 AV |
1606 | if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) { |
1607 | err = ixgbe_request_msix_irqs(adapter); | |
1608 | } else if (adapter->flags & IXGBE_FLAG_MSI_ENABLED) { | |
1609 | err = request_irq(adapter->pdev->irq, &ixgbe_intr, 0, | |
b4617240 | 1610 | netdev->name, netdev); |
021230d4 AV |
1611 | } else { |
1612 | err = request_irq(adapter->pdev->irq, &ixgbe_intr, IRQF_SHARED, | |
b4617240 | 1613 | netdev->name, netdev); |
9a799d71 AK |
1614 | } |
1615 | ||
9a799d71 AK |
1616 | if (err) |
1617 | DPRINTK(PROBE, ERR, "request_irq failed, Error %d\n", err); | |
1618 | ||
9a799d71 AK |
1619 | return err; |
1620 | } | |
1621 | ||
1622 | static void ixgbe_free_irq(struct ixgbe_adapter *adapter) | |
1623 | { | |
1624 | struct net_device *netdev = adapter->netdev; | |
1625 | ||
1626 | if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) { | |
021230d4 | 1627 | int i, q_vectors; |
9a799d71 | 1628 | |
021230d4 AV |
1629 | q_vectors = adapter->num_msix_vectors; |
1630 | ||
1631 | i = q_vectors - 1; | |
9a799d71 | 1632 | free_irq(adapter->msix_entries[i].vector, netdev); |
9a799d71 | 1633 | |
021230d4 AV |
1634 | i--; |
1635 | for (; i >= 0; i--) { | |
1636 | free_irq(adapter->msix_entries[i].vector, | |
b4617240 | 1637 | &(adapter->q_vector[i])); |
021230d4 AV |
1638 | } |
1639 | ||
1640 | ixgbe_reset_q_vectors(adapter); | |
1641 | } else { | |
1642 | free_irq(adapter->pdev->irq, netdev); | |
9a799d71 AK |
1643 | } |
1644 | } | |
1645 | ||
22d5a71b JB |
1646 | /** |
1647 | * ixgbe_irq_disable - Mask off interrupt generation on the NIC | |
1648 | * @adapter: board private structure | |
1649 | **/ | |
1650 | static inline void ixgbe_irq_disable(struct ixgbe_adapter *adapter) | |
1651 | { | |
835462fc NS |
1652 | if (adapter->hw.mac.type == ixgbe_mac_82598EB) { |
1653 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, ~0); | |
1654 | } else { | |
1655 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, 0xFFFF0000); | |
1656 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC_EX(0), ~0); | |
22d5a71b | 1657 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC_EX(1), ~0); |
22d5a71b JB |
1658 | } |
1659 | IXGBE_WRITE_FLUSH(&adapter->hw); | |
1660 | if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) { | |
1661 | int i; | |
1662 | for (i = 0; i < adapter->num_msix_vectors; i++) | |
1663 | synchronize_irq(adapter->msix_entries[i].vector); | |
1664 | } else { | |
1665 | synchronize_irq(adapter->pdev->irq); | |
1666 | } | |
1667 | } | |
1668 | ||
9a799d71 AK |
1669 | /** |
1670 | * ixgbe_configure_msi_and_legacy - Initialize PIN (INTA...) and MSI interrupts | |
1671 | * | |
1672 | **/ | |
1673 | static void ixgbe_configure_msi_and_legacy(struct ixgbe_adapter *adapter) | |
1674 | { | |
9a799d71 AK |
1675 | struct ixgbe_hw *hw = &adapter->hw; |
1676 | ||
021230d4 | 1677 | IXGBE_WRITE_REG(hw, IXGBE_EITR(0), |
30efa5a3 | 1678 | EITR_INTS_PER_SEC_TO_REG(adapter->eitr_param)); |
9a799d71 | 1679 | |
e8e26350 PW |
1680 | ixgbe_set_ivar(adapter, 0, 0, 0); |
1681 | ixgbe_set_ivar(adapter, 1, 0, 0); | |
021230d4 AV |
1682 | |
1683 | map_vector_to_rxq(adapter, 0, 0); | |
1684 | map_vector_to_txq(adapter, 0, 0); | |
1685 | ||
1686 | DPRINTK(HW, INFO, "Legacy interrupt IVAR setup done\n"); | |
9a799d71 AK |
1687 | } |
1688 | ||
1689 | /** | |
3a581073 | 1690 | * ixgbe_configure_tx - Configure 8259x Transmit Unit after Reset |
9a799d71 AK |
1691 | * @adapter: board private structure |
1692 | * | |
1693 | * Configure the Tx unit of the MAC after a reset. | |
1694 | **/ | |
1695 | static void ixgbe_configure_tx(struct ixgbe_adapter *adapter) | |
1696 | { | |
12207e49 | 1697 | u64 tdba; |
9a799d71 | 1698 | struct ixgbe_hw *hw = &adapter->hw; |
021230d4 | 1699 | u32 i, j, tdlen, txctrl; |
9a799d71 AK |
1700 | |
1701 | /* Setup the HW Tx Head and Tail descriptor pointers */ | |
1702 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
e01c31a5 JB |
1703 | struct ixgbe_ring *ring = &adapter->tx_ring[i]; |
1704 | j = ring->reg_idx; | |
1705 | tdba = ring->dma; | |
1706 | tdlen = ring->count * sizeof(union ixgbe_adv_tx_desc); | |
021230d4 | 1707 | IXGBE_WRITE_REG(hw, IXGBE_TDBAL(j), |
284901a9 | 1708 | (tdba & DMA_BIT_MASK(32))); |
021230d4 AV |
1709 | IXGBE_WRITE_REG(hw, IXGBE_TDBAH(j), (tdba >> 32)); |
1710 | IXGBE_WRITE_REG(hw, IXGBE_TDLEN(j), tdlen); | |
1711 | IXGBE_WRITE_REG(hw, IXGBE_TDH(j), 0); | |
1712 | IXGBE_WRITE_REG(hw, IXGBE_TDT(j), 0); | |
1713 | adapter->tx_ring[i].head = IXGBE_TDH(j); | |
1714 | adapter->tx_ring[i].tail = IXGBE_TDT(j); | |
1715 | /* Disable Tx Head Writeback RO bit, since this hoses | |
1716 | * bookkeeping if things aren't delivered in order. | |
1717 | */ | |
e01c31a5 | 1718 | txctrl = IXGBE_READ_REG(hw, IXGBE_DCA_TXCTRL(j)); |
021230d4 | 1719 | txctrl &= ~IXGBE_DCA_TXCTRL_TX_WB_RO_EN; |
e01c31a5 | 1720 | IXGBE_WRITE_REG(hw, IXGBE_DCA_TXCTRL(j), txctrl); |
9a799d71 | 1721 | } |
e8e26350 PW |
1722 | if (hw->mac.type == ixgbe_mac_82599EB) { |
1723 | /* We enable 8 traffic classes, DCB only */ | |
1724 | if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) | |
1725 | IXGBE_WRITE_REG(hw, IXGBE_MTQC, (IXGBE_MTQC_RT_ENA | | |
1726 | IXGBE_MTQC_8TC_8TQ)); | |
1727 | } | |
9a799d71 AK |
1728 | } |
1729 | ||
e8e26350 | 1730 | #define IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT 2 |
cc41ac7c JB |
1731 | |
1732 | static void ixgbe_configure_srrctl(struct ixgbe_adapter *adapter, int index) | |
1733 | { | |
1734 | struct ixgbe_ring *rx_ring; | |
1735 | u32 srrctl; | |
e8e26350 | 1736 | int queue0 = 0; |
3be1adfb AD |
1737 | unsigned long mask; |
1738 | ||
e8e26350 PW |
1739 | if (adapter->hw.mac.type == ixgbe_mac_82599EB) { |
1740 | queue0 = index; | |
cc41ac7c | 1741 | } else { |
3be1adfb AD |
1742 | mask = (unsigned long) adapter->ring_feature[RING_F_RSS].mask; |
1743 | queue0 = index & mask; | |
1744 | index = index & mask; | |
cc41ac7c | 1745 | } |
3be1adfb | 1746 | |
cc41ac7c JB |
1747 | rx_ring = &adapter->rx_ring[queue0]; |
1748 | ||
1749 | srrctl = IXGBE_READ_REG(&adapter->hw, IXGBE_SRRCTL(index)); | |
1750 | ||
1751 | srrctl &= ~IXGBE_SRRCTL_BSIZEHDR_MASK; | |
1752 | srrctl &= ~IXGBE_SRRCTL_BSIZEPKT_MASK; | |
1753 | ||
1754 | if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) { | |
32344a39 JB |
1755 | u16 bufsz = IXGBE_RXBUFFER_2048; |
1756 | /* grow the amount we can receive on large page machines */ | |
1757 | if (bufsz < (PAGE_SIZE / 2)) | |
1758 | bufsz = (PAGE_SIZE / 2); | |
1759 | /* cap the bufsz at our largest descriptor size */ | |
1760 | bufsz = min((u16)IXGBE_MAX_RXBUFFER, bufsz); | |
1761 | ||
1762 | srrctl |= bufsz >> IXGBE_SRRCTL_BSIZEPKT_SHIFT; | |
cc41ac7c JB |
1763 | srrctl |= IXGBE_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS; |
1764 | srrctl |= ((IXGBE_RX_HDR_SIZE << | |
b4617240 PW |
1765 | IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT) & |
1766 | IXGBE_SRRCTL_BSIZEHDR_MASK); | |
cc41ac7c JB |
1767 | } else { |
1768 | srrctl |= IXGBE_SRRCTL_DESCTYPE_ADV_ONEBUF; | |
1769 | ||
1770 | if (rx_ring->rx_buf_len == MAXIMUM_ETHERNET_VLAN_SIZE) | |
1771 | srrctl |= IXGBE_RXBUFFER_2048 >> | |
1772 | IXGBE_SRRCTL_BSIZEPKT_SHIFT; | |
1773 | else | |
1774 | srrctl |= rx_ring->rx_buf_len >> | |
1775 | IXGBE_SRRCTL_BSIZEPKT_SHIFT; | |
1776 | } | |
e8e26350 | 1777 | |
cc41ac7c JB |
1778 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_SRRCTL(index), srrctl); |
1779 | } | |
9a799d71 | 1780 | |
9a799d71 | 1781 | /** |
3a581073 | 1782 | * ixgbe_configure_rx - Configure 8259x Receive Unit after Reset |
9a799d71 AK |
1783 | * @adapter: board private structure |
1784 | * | |
1785 | * Configure the Rx unit of the MAC after a reset. | |
1786 | **/ | |
1787 | static void ixgbe_configure_rx(struct ixgbe_adapter *adapter) | |
1788 | { | |
1789 | u64 rdba; | |
1790 | struct ixgbe_hw *hw = &adapter->hw; | |
1791 | struct net_device *netdev = adapter->netdev; | |
1792 | int max_frame = netdev->mtu + ETH_HLEN + ETH_FCS_LEN; | |
021230d4 | 1793 | int i, j; |
9a799d71 | 1794 | u32 rdlen, rxctrl, rxcsum; |
7c6e0a43 JB |
1795 | static const u32 seed[10] = { 0xE291D73D, 0x1805EC6C, 0x2A94B30D, |
1796 | 0xA54F2BEC, 0xEA49AF7C, 0xE214AD3D, 0xB855AABE, | |
1797 | 0x6A3E67EA, 0x14364D17, 0x3BED200D}; | |
9a799d71 | 1798 | u32 fctrl, hlreg0; |
509ee935 | 1799 | u32 reta = 0, mrqc = 0; |
cc41ac7c | 1800 | u32 rdrxctl; |
f8212f97 | 1801 | u32 rscctrl; |
7c6e0a43 | 1802 | int rx_buf_len; |
9a799d71 AK |
1803 | |
1804 | /* Decide whether to use packet split mode or not */ | |
762f4c57 | 1805 | adapter->flags |= IXGBE_FLAG_RX_PS_ENABLED; |
9a799d71 AK |
1806 | |
1807 | /* Set the RX buffer length according to the mode */ | |
1808 | if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) { | |
7c6e0a43 | 1809 | rx_buf_len = IXGBE_RX_HDR_SIZE; |
e8e26350 PW |
1810 | if (hw->mac.type == ixgbe_mac_82599EB) { |
1811 | /* PSRTYPE must be initialized in 82599 */ | |
1812 | u32 psrtype = IXGBE_PSRTYPE_TCPHDR | | |
1813 | IXGBE_PSRTYPE_UDPHDR | | |
1814 | IXGBE_PSRTYPE_IPV4HDR | | |
1815 | IXGBE_PSRTYPE_IPV6HDR; | |
1816 | IXGBE_WRITE_REG(hw, IXGBE_PSRTYPE(0), psrtype); | |
1817 | } | |
9a799d71 | 1818 | } else { |
f8212f97 AD |
1819 | if (!(adapter->flags & IXGBE_FLAG_RSC_ENABLED) && |
1820 | (netdev->mtu <= ETH_DATA_LEN)) | |
7c6e0a43 | 1821 | rx_buf_len = MAXIMUM_ETHERNET_VLAN_SIZE; |
9a799d71 | 1822 | else |
7c6e0a43 | 1823 | rx_buf_len = ALIGN(max_frame, 1024); |
9a799d71 AK |
1824 | } |
1825 | ||
1826 | fctrl = IXGBE_READ_REG(&adapter->hw, IXGBE_FCTRL); | |
1827 | fctrl |= IXGBE_FCTRL_BAM; | |
021230d4 | 1828 | fctrl |= IXGBE_FCTRL_DPF; /* discard pause frames when FC enabled */ |
e8e26350 | 1829 | fctrl |= IXGBE_FCTRL_PMCF; |
9a799d71 AK |
1830 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_FCTRL, fctrl); |
1831 | ||
1832 | hlreg0 = IXGBE_READ_REG(hw, IXGBE_HLREG0); | |
1833 | if (adapter->netdev->mtu <= ETH_DATA_LEN) | |
1834 | hlreg0 &= ~IXGBE_HLREG0_JUMBOEN; | |
1835 | else | |
1836 | hlreg0 |= IXGBE_HLREG0_JUMBOEN; | |
1837 | IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0); | |
1838 | ||
9a799d71 AK |
1839 | rdlen = adapter->rx_ring[0].count * sizeof(union ixgbe_adv_rx_desc); |
1840 | /* disable receives while setting up the descriptors */ | |
1841 | rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL); | |
1842 | IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, rxctrl & ~IXGBE_RXCTRL_RXEN); | |
1843 | ||
1844 | /* Setup the HW Rx Head and Tail Descriptor Pointers and | |
1845 | * the Base and Length of the Rx Descriptor Ring */ | |
1846 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
1847 | rdba = adapter->rx_ring[i].dma; | |
7c6e0a43 | 1848 | j = adapter->rx_ring[i].reg_idx; |
284901a9 | 1849 | IXGBE_WRITE_REG(hw, IXGBE_RDBAL(j), (rdba & DMA_BIT_MASK(32))); |
7c6e0a43 JB |
1850 | IXGBE_WRITE_REG(hw, IXGBE_RDBAH(j), (rdba >> 32)); |
1851 | IXGBE_WRITE_REG(hw, IXGBE_RDLEN(j), rdlen); | |
1852 | IXGBE_WRITE_REG(hw, IXGBE_RDH(j), 0); | |
1853 | IXGBE_WRITE_REG(hw, IXGBE_RDT(j), 0); | |
1854 | adapter->rx_ring[i].head = IXGBE_RDH(j); | |
1855 | adapter->rx_ring[i].tail = IXGBE_RDT(j); | |
1856 | adapter->rx_ring[i].rx_buf_len = rx_buf_len; | |
cc41ac7c JB |
1857 | |
1858 | ixgbe_configure_srrctl(adapter, j); | |
9a799d71 AK |
1859 | } |
1860 | ||
e8e26350 PW |
1861 | if (hw->mac.type == ixgbe_mac_82598EB) { |
1862 | /* | |
1863 | * For VMDq support of different descriptor types or | |
1864 | * buffer sizes through the use of multiple SRRCTL | |
1865 | * registers, RDRXCTL.MVMEN must be set to 1 | |
1866 | * | |
1867 | * also, the manual doesn't mention it clearly but DCA hints | |
1868 | * will only use queue 0's tags unless this bit is set. Side | |
1869 | * effects of setting this bit are only that SRRCTL must be | |
1870 | * fully programmed [0..15] | |
1871 | */ | |
2a41ff81 JB |
1872 | rdrxctl = IXGBE_READ_REG(hw, IXGBE_RDRXCTL); |
1873 | rdrxctl |= IXGBE_RDRXCTL_MVMEN; | |
1874 | IXGBE_WRITE_REG(hw, IXGBE_RDRXCTL, rdrxctl); | |
2f90b865 | 1875 | } |
177db6ff | 1876 | |
e8e26350 PW |
1877 | /* Program MRQC for the distribution of queues */ |
1878 | if (hw->mac.type == ixgbe_mac_82599EB) { | |
1879 | int mask = adapter->flags & ( | |
1880 | IXGBE_FLAG_RSS_ENABLED | |
1881 | | IXGBE_FLAG_DCB_ENABLED | |
1882 | ); | |
1883 | ||
1884 | switch (mask) { | |
1885 | case (IXGBE_FLAG_RSS_ENABLED): | |
1886 | mrqc = IXGBE_MRQC_RSSEN; | |
1887 | break; | |
1888 | case (IXGBE_FLAG_DCB_ENABLED): | |
1889 | mrqc = IXGBE_MRQC_RT8TCEN; | |
1890 | break; | |
1891 | default: | |
1892 | break; | |
1893 | } | |
1894 | } | |
021230d4 | 1895 | if (adapter->flags & IXGBE_FLAG_RSS_ENABLED) { |
9a799d71 | 1896 | /* Fill out redirection table */ |
021230d4 AV |
1897 | for (i = 0, j = 0; i < 128; i++, j++) { |
1898 | if (j == adapter->ring_feature[RING_F_RSS].indices) | |
1899 | j = 0; | |
1900 | /* reta = 4-byte sliding window of | |
1901 | * 0x00..(indices-1)(indices-1)00..etc. */ | |
1902 | reta = (reta << 8) | (j * 0x11); | |
1903 | if ((i & 3) == 3) | |
1904 | IXGBE_WRITE_REG(hw, IXGBE_RETA(i >> 2), reta); | |
9a799d71 AK |
1905 | } |
1906 | ||
1907 | /* Fill out hash function seeds */ | |
1908 | for (i = 0; i < 10; i++) | |
7c6e0a43 | 1909 | IXGBE_WRITE_REG(hw, IXGBE_RSSRK(i), seed[i]); |
9a799d71 | 1910 | |
2a41ff81 JB |
1911 | if (hw->mac.type == ixgbe_mac_82598EB) |
1912 | mrqc |= IXGBE_MRQC_RSSEN; | |
9a799d71 | 1913 | /* Perform hash on these packet types */ |
2a41ff81 JB |
1914 | mrqc |= IXGBE_MRQC_RSS_FIELD_IPV4 |
1915 | | IXGBE_MRQC_RSS_FIELD_IPV4_TCP | |
1916 | | IXGBE_MRQC_RSS_FIELD_IPV4_UDP | |
1917 | | IXGBE_MRQC_RSS_FIELD_IPV6 | |
1918 | | IXGBE_MRQC_RSS_FIELD_IPV6_TCP | |
1919 | | IXGBE_MRQC_RSS_FIELD_IPV6_UDP; | |
021230d4 | 1920 | } |
2a41ff81 | 1921 | IXGBE_WRITE_REG(hw, IXGBE_MRQC, mrqc); |
9a799d71 | 1922 | |
021230d4 AV |
1923 | rxcsum = IXGBE_READ_REG(hw, IXGBE_RXCSUM); |
1924 | ||
1925 | if (adapter->flags & IXGBE_FLAG_RSS_ENABLED || | |
1926 | adapter->flags & IXGBE_FLAG_RX_CSUM_ENABLED) { | |
1927 | /* Disable indicating checksum in descriptor, enables | |
1928 | * RSS hash */ | |
9a799d71 | 1929 | rxcsum |= IXGBE_RXCSUM_PCSD; |
9a799d71 | 1930 | } |
021230d4 AV |
1931 | if (!(rxcsum & IXGBE_RXCSUM_PCSD)) { |
1932 | /* Enable IPv4 payload checksum for UDP fragments | |
1933 | * if PCSD is not set */ | |
1934 | rxcsum |= IXGBE_RXCSUM_IPPCSE; | |
1935 | } | |
1936 | ||
1937 | IXGBE_WRITE_REG(hw, IXGBE_RXCSUM, rxcsum); | |
e8e26350 PW |
1938 | |
1939 | if (hw->mac.type == ixgbe_mac_82599EB) { | |
1940 | rdrxctl = IXGBE_READ_REG(hw, IXGBE_RDRXCTL); | |
1941 | rdrxctl |= IXGBE_RDRXCTL_CRCSTRIP; | |
f8212f97 | 1942 | rdrxctl &= ~IXGBE_RDRXCTL_RSCFRSTSIZE; |
e8e26350 PW |
1943 | IXGBE_WRITE_REG(hw, IXGBE_RDRXCTL, rdrxctl); |
1944 | } | |
f8212f97 AD |
1945 | |
1946 | if (adapter->flags & IXGBE_FLAG_RSC_ENABLED) { | |
1947 | /* Enable 82599 HW-RSC */ | |
1948 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
1949 | j = adapter->rx_ring[i].reg_idx; | |
1950 | rscctrl = IXGBE_READ_REG(hw, IXGBE_RSCCTL(j)); | |
1951 | rscctrl |= IXGBE_RSCCTL_RSCEN; | |
1952 | /* | |
1953 | * if packet split is enabled we can only support up | |
1954 | * to max frags + 1 descriptors. | |
1955 | */ | |
1956 | if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) | |
1957 | #if (MAX_SKB_FRAGS < 3) | |
1958 | rscctrl |= IXGBE_RSCCTL_MAXDESC_1; | |
1959 | #elif (MAX_SKB_FRAGS < 7) | |
1960 | rscctrl |= IXGBE_RSCCTL_MAXDESC_4; | |
1961 | #elif (MAX_SKB_FRAGS < 15) | |
1962 | rscctrl |= IXGBE_RSCCTL_MAXDESC_8; | |
1963 | #else | |
1964 | rscctrl |= IXGBE_RSCCTL_MAXDESC_16; | |
1965 | #endif | |
1966 | else | |
1967 | rscctrl |= IXGBE_RSCCTL_MAXDESC_16; | |
1968 | IXGBE_WRITE_REG(hw, IXGBE_RSCCTL(j), rscctrl); | |
1969 | } | |
1970 | /* Disable RSC for ACK packets */ | |
1971 | IXGBE_WRITE_REG(hw, IXGBE_RSCDBU, | |
1972 | (IXGBE_RSCDBU_RSCACKDIS | IXGBE_READ_REG(hw, IXGBE_RSCDBU))); | |
1973 | } | |
9a799d71 AK |
1974 | } |
1975 | ||
068c89b0 DS |
1976 | static void ixgbe_vlan_rx_add_vid(struct net_device *netdev, u16 vid) |
1977 | { | |
1978 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
1979 | struct ixgbe_hw *hw = &adapter->hw; | |
1980 | ||
1981 | /* add VID to filter table */ | |
1982 | hw->mac.ops.set_vfta(&adapter->hw, vid, 0, true); | |
1983 | } | |
1984 | ||
1985 | static void ixgbe_vlan_rx_kill_vid(struct net_device *netdev, u16 vid) | |
1986 | { | |
1987 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
1988 | struct ixgbe_hw *hw = &adapter->hw; | |
1989 | ||
1990 | if (!test_bit(__IXGBE_DOWN, &adapter->state)) | |
1991 | ixgbe_irq_disable(adapter); | |
1992 | ||
1993 | vlan_group_set_device(adapter->vlgrp, vid, NULL); | |
1994 | ||
1995 | if (!test_bit(__IXGBE_DOWN, &adapter->state)) | |
1996 | ixgbe_irq_enable(adapter); | |
1997 | ||
1998 | /* remove VID from filter table */ | |
1999 | hw->mac.ops.set_vfta(&adapter->hw, vid, 0, false); | |
2000 | } | |
2001 | ||
9a799d71 | 2002 | static void ixgbe_vlan_rx_register(struct net_device *netdev, |
b4617240 | 2003 | struct vlan_group *grp) |
9a799d71 AK |
2004 | { |
2005 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
2006 | u32 ctrl; | |
e8e26350 | 2007 | int i, j; |
9a799d71 | 2008 | |
d4f80882 AV |
2009 | if (!test_bit(__IXGBE_DOWN, &adapter->state)) |
2010 | ixgbe_irq_disable(adapter); | |
9a799d71 AK |
2011 | adapter->vlgrp = grp; |
2012 | ||
2f90b865 AD |
2013 | /* |
2014 | * For a DCB driver, always enable VLAN tag stripping so we can | |
2015 | * still receive traffic from a DCB-enabled host even if we're | |
2016 | * not in DCB mode. | |
2017 | */ | |
2018 | ctrl = IXGBE_READ_REG(&adapter->hw, IXGBE_VLNCTRL); | |
e8e26350 PW |
2019 | if (adapter->hw.mac.type == ixgbe_mac_82598EB) { |
2020 | ctrl |= IXGBE_VLNCTRL_VME | IXGBE_VLNCTRL_VFE; | |
2021 | ctrl &= ~IXGBE_VLNCTRL_CFIEN; | |
2022 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_VLNCTRL, ctrl); | |
2023 | } else if (adapter->hw.mac.type == ixgbe_mac_82599EB) { | |
2024 | ctrl |= IXGBE_VLNCTRL_VFE; | |
9a799d71 AK |
2025 | /* enable VLAN tag insert/strip */ |
2026 | ctrl = IXGBE_READ_REG(&adapter->hw, IXGBE_VLNCTRL); | |
9a799d71 AK |
2027 | ctrl &= ~IXGBE_VLNCTRL_CFIEN; |
2028 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_VLNCTRL, ctrl); | |
e8e26350 PW |
2029 | for (i = 0; i < adapter->num_rx_queues; i++) { |
2030 | j = adapter->rx_ring[i].reg_idx; | |
2031 | ctrl = IXGBE_READ_REG(&adapter->hw, IXGBE_RXDCTL(j)); | |
2032 | ctrl |= IXGBE_RXDCTL_VME; | |
2033 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_RXDCTL(j), ctrl); | |
2034 | } | |
9a799d71 | 2035 | } |
e8e26350 | 2036 | ixgbe_vlan_rx_add_vid(netdev, 0); |
9a799d71 | 2037 | |
d4f80882 AV |
2038 | if (!test_bit(__IXGBE_DOWN, &adapter->state)) |
2039 | ixgbe_irq_enable(adapter); | |
9a799d71 AK |
2040 | } |
2041 | ||
9a799d71 AK |
2042 | static void ixgbe_restore_vlan(struct ixgbe_adapter *adapter) |
2043 | { | |
2044 | ixgbe_vlan_rx_register(adapter->netdev, adapter->vlgrp); | |
2045 | ||
2046 | if (adapter->vlgrp) { | |
2047 | u16 vid; | |
2048 | for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) { | |
2049 | if (!vlan_group_get_device(adapter->vlgrp, vid)) | |
2050 | continue; | |
2051 | ixgbe_vlan_rx_add_vid(adapter->netdev, vid); | |
2052 | } | |
2053 | } | |
2054 | } | |
2055 | ||
2c5645cf CL |
2056 | static u8 *ixgbe_addr_list_itr(struct ixgbe_hw *hw, u8 **mc_addr_ptr, u32 *vmdq) |
2057 | { | |
2058 | struct dev_mc_list *mc_ptr; | |
2059 | u8 *addr = *mc_addr_ptr; | |
2060 | *vmdq = 0; | |
2061 | ||
2062 | mc_ptr = container_of(addr, struct dev_mc_list, dmi_addr[0]); | |
2063 | if (mc_ptr->next) | |
2064 | *mc_addr_ptr = mc_ptr->next->dmi_addr; | |
2065 | else | |
2066 | *mc_addr_ptr = NULL; | |
2067 | ||
2068 | return addr; | |
2069 | } | |
2070 | ||
9a799d71 | 2071 | /** |
2c5645cf | 2072 | * ixgbe_set_rx_mode - Unicast, Multicast and Promiscuous mode set |
9a799d71 AK |
2073 | * @netdev: network interface device structure |
2074 | * | |
2c5645cf CL |
2075 | * The set_rx_method entry point is called whenever the unicast/multicast |
2076 | * address list or the network interface flags are updated. This routine is | |
2077 | * responsible for configuring the hardware for proper unicast, multicast and | |
2078 | * promiscuous mode. | |
9a799d71 | 2079 | **/ |
2c5645cf | 2080 | static void ixgbe_set_rx_mode(struct net_device *netdev) |
9a799d71 AK |
2081 | { |
2082 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
2083 | struct ixgbe_hw *hw = &adapter->hw; | |
3d01625a | 2084 | u32 fctrl, vlnctrl; |
2c5645cf CL |
2085 | u8 *addr_list = NULL; |
2086 | int addr_count = 0; | |
9a799d71 AK |
2087 | |
2088 | /* Check for Promiscuous and All Multicast modes */ | |
2089 | ||
2090 | fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL); | |
3d01625a | 2091 | vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL); |
9a799d71 AK |
2092 | |
2093 | if (netdev->flags & IFF_PROMISC) { | |
2c5645cf | 2094 | hw->addr_ctrl.user_set_promisc = 1; |
9a799d71 | 2095 | fctrl |= (IXGBE_FCTRL_UPE | IXGBE_FCTRL_MPE); |
3d01625a | 2096 | vlnctrl &= ~IXGBE_VLNCTRL_VFE; |
9a799d71 | 2097 | } else { |
746b9f02 PM |
2098 | if (netdev->flags & IFF_ALLMULTI) { |
2099 | fctrl |= IXGBE_FCTRL_MPE; | |
2100 | fctrl &= ~IXGBE_FCTRL_UPE; | |
2101 | } else { | |
2102 | fctrl &= ~(IXGBE_FCTRL_UPE | IXGBE_FCTRL_MPE); | |
2103 | } | |
3d01625a | 2104 | vlnctrl |= IXGBE_VLNCTRL_VFE; |
2c5645cf | 2105 | hw->addr_ctrl.user_set_promisc = 0; |
9a799d71 AK |
2106 | } |
2107 | ||
2108 | IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl); | |
3d01625a | 2109 | IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl); |
9a799d71 | 2110 | |
2c5645cf CL |
2111 | /* reprogram secondary unicast list */ |
2112 | addr_count = netdev->uc_count; | |
2113 | if (addr_count) | |
2114 | addr_list = netdev->uc_list->dmi_addr; | |
c44ade9e JB |
2115 | hw->mac.ops.update_uc_addr_list(hw, addr_list, addr_count, |
2116 | ixgbe_addr_list_itr); | |
9a799d71 | 2117 | |
2c5645cf CL |
2118 | /* reprogram multicast list */ |
2119 | addr_count = netdev->mc_count; | |
2120 | if (addr_count) | |
2121 | addr_list = netdev->mc_list->dmi_addr; | |
c44ade9e JB |
2122 | hw->mac.ops.update_mc_addr_list(hw, addr_list, addr_count, |
2123 | ixgbe_addr_list_itr); | |
9a799d71 AK |
2124 | } |
2125 | ||
021230d4 AV |
2126 | static void ixgbe_napi_enable_all(struct ixgbe_adapter *adapter) |
2127 | { | |
2128 | int q_idx; | |
2129 | struct ixgbe_q_vector *q_vector; | |
2130 | int q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS; | |
2131 | ||
2132 | /* legacy and MSI only use one vector */ | |
2133 | if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED)) | |
2134 | q_vectors = 1; | |
2135 | ||
2136 | for (q_idx = 0; q_idx < q_vectors; q_idx++) { | |
f0848276 | 2137 | struct napi_struct *napi; |
021230d4 AV |
2138 | q_vector = &adapter->q_vector[q_idx]; |
2139 | if (!q_vector->rxr_count) | |
2140 | continue; | |
f0848276 JB |
2141 | napi = &q_vector->napi; |
2142 | if ((adapter->flags & IXGBE_FLAG_MSIX_ENABLED) && | |
2143 | (q_vector->rxr_count > 1)) | |
2144 | napi->poll = &ixgbe_clean_rxonly_many; | |
2145 | ||
2146 | napi_enable(napi); | |
021230d4 AV |
2147 | } |
2148 | } | |
2149 | ||
2150 | static void ixgbe_napi_disable_all(struct ixgbe_adapter *adapter) | |
2151 | { | |
2152 | int q_idx; | |
2153 | struct ixgbe_q_vector *q_vector; | |
2154 | int q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS; | |
2155 | ||
2156 | /* legacy and MSI only use one vector */ | |
2157 | if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED)) | |
2158 | q_vectors = 1; | |
2159 | ||
2160 | for (q_idx = 0; q_idx < q_vectors; q_idx++) { | |
2161 | q_vector = &adapter->q_vector[q_idx]; | |
2162 | if (!q_vector->rxr_count) | |
2163 | continue; | |
2164 | napi_disable(&q_vector->napi); | |
2165 | } | |
2166 | } | |
2167 | ||
7a6b6f51 | 2168 | #ifdef CONFIG_IXGBE_DCB |
2f90b865 AD |
2169 | /* |
2170 | * ixgbe_configure_dcb - Configure DCB hardware | |
2171 | * @adapter: ixgbe adapter struct | |
2172 | * | |
2173 | * This is called by the driver on open to configure the DCB hardware. | |
2174 | * This is also called by the gennetlink interface when reconfiguring | |
2175 | * the DCB state. | |
2176 | */ | |
2177 | static void ixgbe_configure_dcb(struct ixgbe_adapter *adapter) | |
2178 | { | |
2179 | struct ixgbe_hw *hw = &adapter->hw; | |
2180 | u32 txdctl, vlnctrl; | |
2181 | int i, j; | |
2182 | ||
2183 | ixgbe_dcb_check_config(&adapter->dcb_cfg); | |
2184 | ixgbe_dcb_calculate_tc_credits(&adapter->dcb_cfg, DCB_TX_CONFIG); | |
2185 | ixgbe_dcb_calculate_tc_credits(&adapter->dcb_cfg, DCB_RX_CONFIG); | |
2186 | ||
2187 | /* reconfigure the hardware */ | |
2188 | ixgbe_dcb_hw_config(&adapter->hw, &adapter->dcb_cfg); | |
2189 | ||
2190 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
2191 | j = adapter->tx_ring[i].reg_idx; | |
2192 | txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(j)); | |
2193 | /* PThresh workaround for Tx hang with DFP enabled. */ | |
2194 | txdctl |= 32; | |
2195 | IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(j), txdctl); | |
2196 | } | |
2197 | /* Enable VLAN tag insert/strip */ | |
2198 | vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL); | |
e8e26350 PW |
2199 | if (hw->mac.type == ixgbe_mac_82598EB) { |
2200 | vlnctrl |= IXGBE_VLNCTRL_VME | IXGBE_VLNCTRL_VFE; | |
2201 | vlnctrl &= ~IXGBE_VLNCTRL_CFIEN; | |
2202 | IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl); | |
2203 | } else if (hw->mac.type == ixgbe_mac_82599EB) { | |
2204 | vlnctrl |= IXGBE_VLNCTRL_VFE; | |
2205 | vlnctrl &= ~IXGBE_VLNCTRL_CFIEN; | |
2206 | IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl); | |
2207 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
2208 | j = adapter->rx_ring[i].reg_idx; | |
2209 | vlnctrl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(j)); | |
2210 | vlnctrl |= IXGBE_RXDCTL_VME; | |
2211 | IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(j), vlnctrl); | |
2212 | } | |
2213 | } | |
2f90b865 AD |
2214 | hw->mac.ops.set_vfta(&adapter->hw, 0, 0, true); |
2215 | } | |
2216 | ||
2217 | #endif | |
9a799d71 AK |
2218 | static void ixgbe_configure(struct ixgbe_adapter *adapter) |
2219 | { | |
2220 | struct net_device *netdev = adapter->netdev; | |
2221 | int i; | |
2222 | ||
2c5645cf | 2223 | ixgbe_set_rx_mode(netdev); |
9a799d71 AK |
2224 | |
2225 | ixgbe_restore_vlan(adapter); | |
7a6b6f51 | 2226 | #ifdef CONFIG_IXGBE_DCB |
2f90b865 AD |
2227 | if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) { |
2228 | netif_set_gso_max_size(netdev, 32768); | |
2229 | ixgbe_configure_dcb(adapter); | |
2230 | } else { | |
2231 | netif_set_gso_max_size(netdev, 65536); | |
2232 | } | |
2233 | #else | |
2234 | netif_set_gso_max_size(netdev, 65536); | |
2235 | #endif | |
9a799d71 AK |
2236 | |
2237 | ixgbe_configure_tx(adapter); | |
2238 | ixgbe_configure_rx(adapter); | |
2239 | for (i = 0; i < adapter->num_rx_queues; i++) | |
2240 | ixgbe_alloc_rx_buffers(adapter, &adapter->rx_ring[i], | |
b4617240 | 2241 | (adapter->rx_ring[i].count - 1)); |
9a799d71 AK |
2242 | } |
2243 | ||
e8e26350 PW |
2244 | static inline bool ixgbe_is_sfp(struct ixgbe_hw *hw) |
2245 | { | |
2246 | switch (hw->phy.type) { | |
2247 | case ixgbe_phy_sfp_avago: | |
2248 | case ixgbe_phy_sfp_ftl: | |
2249 | case ixgbe_phy_sfp_intel: | |
2250 | case ixgbe_phy_sfp_unknown: | |
2251 | case ixgbe_phy_tw_tyco: | |
2252 | case ixgbe_phy_tw_unknown: | |
2253 | return true; | |
2254 | default: | |
2255 | return false; | |
2256 | } | |
2257 | } | |
2258 | ||
0ecc061d | 2259 | /** |
e8e26350 PW |
2260 | * ixgbe_sfp_link_config - set up SFP+ link |
2261 | * @adapter: pointer to private adapter struct | |
2262 | **/ | |
2263 | static void ixgbe_sfp_link_config(struct ixgbe_adapter *adapter) | |
2264 | { | |
2265 | struct ixgbe_hw *hw = &adapter->hw; | |
2266 | ||
2267 | if (hw->phy.multispeed_fiber) { | |
2268 | /* | |
2269 | * In multispeed fiber setups, the device may not have | |
2270 | * had a physical connection when the driver loaded. | |
2271 | * If that's the case, the initial link configuration | |
2272 | * couldn't get the MAC into 10G or 1G mode, so we'll | |
2273 | * never have a link status change interrupt fire. | |
2274 | * We need to try and force an autonegotiation | |
2275 | * session, then bring up link. | |
2276 | */ | |
2277 | hw->mac.ops.setup_sfp(hw); | |
2278 | if (!(adapter->flags & IXGBE_FLAG_IN_SFP_LINK_TASK)) | |
2279 | schedule_work(&adapter->multispeed_fiber_task); | |
2280 | } else { | |
2281 | /* | |
2282 | * Direct Attach Cu and non-multispeed fiber modules | |
2283 | * still need to be configured properly prior to | |
2284 | * attempting link. | |
2285 | */ | |
2286 | if (!(adapter->flags & IXGBE_FLAG_IN_SFP_MOD_TASK)) | |
2287 | schedule_work(&adapter->sfp_config_module_task); | |
2288 | } | |
2289 | } | |
2290 | ||
2291 | /** | |
2292 | * ixgbe_non_sfp_link_config - set up non-SFP+ link | |
0ecc061d PWJ |
2293 | * @hw: pointer to private hardware struct |
2294 | * | |
2295 | * Returns 0 on success, negative on failure | |
2296 | **/ | |
e8e26350 | 2297 | static int ixgbe_non_sfp_link_config(struct ixgbe_hw *hw) |
0ecc061d PWJ |
2298 | { |
2299 | u32 autoneg; | |
2300 | bool link_up = false; | |
2301 | u32 ret = IXGBE_ERR_LINK_SETUP; | |
2302 | ||
2303 | if (hw->mac.ops.check_link) | |
2304 | ret = hw->mac.ops.check_link(hw, &autoneg, &link_up, false); | |
2305 | ||
2306 | if (ret) | |
2307 | goto link_cfg_out; | |
2308 | ||
2309 | if (hw->mac.ops.get_link_capabilities) | |
2310 | ret = hw->mac.ops.get_link_capabilities(hw, &autoneg, | |
2311 | &hw->mac.autoneg); | |
2312 | if (ret) | |
2313 | goto link_cfg_out; | |
2314 | ||
2315 | if (hw->mac.ops.setup_link_speed) | |
2316 | ret = hw->mac.ops.setup_link_speed(hw, autoneg, true, link_up); | |
0ecc061d PWJ |
2317 | link_cfg_out: |
2318 | return ret; | |
2319 | } | |
2320 | ||
e8e26350 PW |
2321 | #define IXGBE_MAX_RX_DESC_POLL 10 |
2322 | static inline void ixgbe_rx_desc_queue_enable(struct ixgbe_adapter *adapter, | |
2323 | int rxr) | |
2324 | { | |
2325 | int j = adapter->rx_ring[rxr].reg_idx; | |
2326 | int k; | |
2327 | ||
2328 | for (k = 0; k < IXGBE_MAX_RX_DESC_POLL; k++) { | |
2329 | if (IXGBE_READ_REG(&adapter->hw, | |
2330 | IXGBE_RXDCTL(j)) & IXGBE_RXDCTL_ENABLE) | |
2331 | break; | |
2332 | else | |
2333 | msleep(1); | |
2334 | } | |
2335 | if (k >= IXGBE_MAX_RX_DESC_POLL) { | |
2336 | DPRINTK(DRV, ERR, "RXDCTL.ENABLE on Rx queue %d " | |
2337 | "not set within the polling period\n", rxr); | |
2338 | } | |
2339 | ixgbe_release_rx_desc(&adapter->hw, &adapter->rx_ring[rxr], | |
2340 | (adapter->rx_ring[rxr].count - 1)); | |
2341 | } | |
2342 | ||
9a799d71 AK |
2343 | static int ixgbe_up_complete(struct ixgbe_adapter *adapter) |
2344 | { | |
2345 | struct net_device *netdev = adapter->netdev; | |
9a799d71 | 2346 | struct ixgbe_hw *hw = &adapter->hw; |
021230d4 | 2347 | int i, j = 0; |
e8e26350 | 2348 | int num_rx_rings = adapter->num_rx_queues; |
0ecc061d | 2349 | int err; |
9a799d71 | 2350 | int max_frame = netdev->mtu + ETH_HLEN + ETH_FCS_LEN; |
021230d4 | 2351 | u32 txdctl, rxdctl, mhadd; |
e8e26350 | 2352 | u32 dmatxctl; |
021230d4 | 2353 | u32 gpie; |
9a799d71 | 2354 | |
5eba3699 AV |
2355 | ixgbe_get_hw_control(adapter); |
2356 | ||
021230d4 AV |
2357 | if ((adapter->flags & IXGBE_FLAG_MSIX_ENABLED) || |
2358 | (adapter->flags & IXGBE_FLAG_MSI_ENABLED)) { | |
9a799d71 AK |
2359 | if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) { |
2360 | gpie = (IXGBE_GPIE_MSIX_MODE | IXGBE_GPIE_EIAME | | |
b4617240 | 2361 | IXGBE_GPIE_PBA_SUPPORT | IXGBE_GPIE_OCD); |
9a799d71 AK |
2362 | } else { |
2363 | /* MSI only */ | |
021230d4 | 2364 | gpie = 0; |
9a799d71 | 2365 | } |
021230d4 AV |
2366 | /* XXX: to interrupt immediately for EICS writes, enable this */ |
2367 | /* gpie |= IXGBE_GPIE_EIMEN; */ | |
2368 | IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie); | |
9a799d71 AK |
2369 | } |
2370 | ||
021230d4 AV |
2371 | if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED)) { |
2372 | /* legacy interrupts, use EIAM to auto-mask when reading EICR, | |
2373 | * specifically only auto mask tx and rx interrupts */ | |
2374 | IXGBE_WRITE_REG(hw, IXGBE_EIAM, IXGBE_EICS_RTX_QUEUE); | |
2375 | } | |
9a799d71 | 2376 | |
0befdb3e JB |
2377 | /* Enable fan failure interrupt if media type is copper */ |
2378 | if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) { | |
2379 | gpie = IXGBE_READ_REG(hw, IXGBE_GPIE); | |
2380 | gpie |= IXGBE_SDP1_GPIEN; | |
2381 | IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie); | |
2382 | } | |
2383 | ||
e8e26350 PW |
2384 | if (hw->mac.type == ixgbe_mac_82599EB) { |
2385 | gpie = IXGBE_READ_REG(hw, IXGBE_GPIE); | |
2386 | gpie |= IXGBE_SDP1_GPIEN; | |
2387 | gpie |= IXGBE_SDP2_GPIEN; | |
2388 | IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie); | |
2389 | } | |
2390 | ||
021230d4 | 2391 | mhadd = IXGBE_READ_REG(hw, IXGBE_MHADD); |
9a799d71 AK |
2392 | if (max_frame != (mhadd >> IXGBE_MHADD_MFS_SHIFT)) { |
2393 | mhadd &= ~IXGBE_MHADD_MFS_MASK; | |
2394 | mhadd |= max_frame << IXGBE_MHADD_MFS_SHIFT; | |
2395 | ||
2396 | IXGBE_WRITE_REG(hw, IXGBE_MHADD, mhadd); | |
2397 | } | |
2398 | ||
2399 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
021230d4 AV |
2400 | j = adapter->tx_ring[i].reg_idx; |
2401 | txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(j)); | |
e01c31a5 JB |
2402 | /* enable WTHRESH=8 descriptors, to encourage burst writeback */ |
2403 | txdctl |= (8 << 16); | |
e8e26350 PW |
2404 | IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(j), txdctl); |
2405 | } | |
2406 | ||
2407 | if (hw->mac.type == ixgbe_mac_82599EB) { | |
2408 | /* DMATXCTL.EN must be set after all Tx queue config is done */ | |
2409 | dmatxctl = IXGBE_READ_REG(hw, IXGBE_DMATXCTL); | |
2410 | dmatxctl |= IXGBE_DMATXCTL_TE; | |
2411 | IXGBE_WRITE_REG(hw, IXGBE_DMATXCTL, dmatxctl); | |
2412 | } | |
2413 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
2414 | j = adapter->tx_ring[i].reg_idx; | |
2415 | txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(j)); | |
9a799d71 | 2416 | txdctl |= IXGBE_TXDCTL_ENABLE; |
021230d4 | 2417 | IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(j), txdctl); |
9a799d71 AK |
2418 | } |
2419 | ||
e8e26350 | 2420 | for (i = 0; i < num_rx_rings; i++) { |
021230d4 AV |
2421 | j = adapter->rx_ring[i].reg_idx; |
2422 | rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(j)); | |
2423 | /* enable PTHRESH=32 descriptors (half the internal cache) | |
2424 | * and HTHRESH=0 descriptors (to minimize latency on fetch), | |
2425 | * this also removes a pesky rx_no_buffer_count increment */ | |
2426 | rxdctl |= 0x0020; | |
9a799d71 | 2427 | rxdctl |= IXGBE_RXDCTL_ENABLE; |
021230d4 | 2428 | IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(j), rxdctl); |
e8e26350 PW |
2429 | if (hw->mac.type == ixgbe_mac_82599EB) |
2430 | ixgbe_rx_desc_queue_enable(adapter, i); | |
9a799d71 AK |
2431 | } |
2432 | /* enable all receives */ | |
2433 | rxdctl = IXGBE_READ_REG(hw, IXGBE_RXCTRL); | |
e8e26350 PW |
2434 | if (hw->mac.type == ixgbe_mac_82598EB) |
2435 | rxdctl |= (IXGBE_RXCTRL_DMBYPS | IXGBE_RXCTRL_RXEN); | |
2436 | else | |
2437 | rxdctl |= IXGBE_RXCTRL_RXEN; | |
2438 | hw->mac.ops.enable_rx_dma(hw, rxdctl); | |
9a799d71 AK |
2439 | |
2440 | if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) | |
2441 | ixgbe_configure_msix(adapter); | |
2442 | else | |
2443 | ixgbe_configure_msi_and_legacy(adapter); | |
2444 | ||
2445 | clear_bit(__IXGBE_DOWN, &adapter->state); | |
021230d4 AV |
2446 | ixgbe_napi_enable_all(adapter); |
2447 | ||
2448 | /* clear any pending interrupts, may auto mask */ | |
2449 | IXGBE_READ_REG(hw, IXGBE_EICR); | |
2450 | ||
9a799d71 AK |
2451 | ixgbe_irq_enable(adapter); |
2452 | ||
e8e26350 PW |
2453 | /* |
2454 | * For hot-pluggable SFP+ devices, a new SFP+ module may have | |
2455 | * arrived before interrupts were enabled. We need to kick off | |
2456 | * the SFP+ module setup first, then try to bring up link. | |
2457 | * If we're not hot-pluggable SFP+, we just need to configure link | |
2458 | * and bring it up. | |
2459 | */ | |
2460 | err = hw->phy.ops.identify(hw); | |
2461 | if (err == IXGBE_ERR_SFP_NOT_SUPPORTED) { | |
2462 | DPRINTK(PROBE, ERR, "PHY not supported on this NIC %d\n", err); | |
2463 | ixgbe_down(adapter); | |
2464 | return err; | |
2465 | } | |
2466 | ||
2467 | if (ixgbe_is_sfp(hw)) { | |
2468 | ixgbe_sfp_link_config(adapter); | |
2469 | } else { | |
2470 | err = ixgbe_non_sfp_link_config(hw); | |
2471 | if (err) | |
2472 | DPRINTK(PROBE, ERR, "link_config FAILED %d\n", err); | |
2473 | } | |
0ecc061d | 2474 | |
1da100bb PWJ |
2475 | /* enable transmits */ |
2476 | netif_tx_start_all_queues(netdev); | |
2477 | ||
9a799d71 AK |
2478 | /* bring the link up in the watchdog, this could race with our first |
2479 | * link up interrupt but shouldn't be a problem */ | |
cf8280ee JB |
2480 | adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE; |
2481 | adapter->link_check_timeout = jiffies; | |
9a799d71 AK |
2482 | mod_timer(&adapter->watchdog_timer, jiffies); |
2483 | return 0; | |
2484 | } | |
2485 | ||
d4f80882 AV |
2486 | void ixgbe_reinit_locked(struct ixgbe_adapter *adapter) |
2487 | { | |
2488 | WARN_ON(in_interrupt()); | |
2489 | while (test_and_set_bit(__IXGBE_RESETTING, &adapter->state)) | |
2490 | msleep(1); | |
2491 | ixgbe_down(adapter); | |
2492 | ixgbe_up(adapter); | |
2493 | clear_bit(__IXGBE_RESETTING, &adapter->state); | |
2494 | } | |
2495 | ||
9a799d71 AK |
2496 | int ixgbe_up(struct ixgbe_adapter *adapter) |
2497 | { | |
2498 | /* hardware has been reset, we need to reload some things */ | |
2499 | ixgbe_configure(adapter); | |
2500 | ||
4dd64df8 JB |
2501 | ixgbe_napi_add_all(adapter); |
2502 | ||
9a799d71 AK |
2503 | return ixgbe_up_complete(adapter); |
2504 | } | |
2505 | ||
2506 | void ixgbe_reset(struct ixgbe_adapter *adapter) | |
2507 | { | |
c44ade9e JB |
2508 | struct ixgbe_hw *hw = &adapter->hw; |
2509 | if (hw->mac.ops.init_hw(hw)) | |
2510 | dev_err(&adapter->pdev->dev, "Hardware Error\n"); | |
9a799d71 AK |
2511 | |
2512 | /* reprogram the RAR[0] in case user changed it. */ | |
c44ade9e | 2513 | hw->mac.ops.set_rar(hw, 0, hw->mac.addr, 0, IXGBE_RAH_AV); |
9a799d71 AK |
2514 | |
2515 | } | |
2516 | ||
9a799d71 AK |
2517 | /** |
2518 | * ixgbe_clean_rx_ring - Free Rx Buffers per Queue | |
2519 | * @adapter: board private structure | |
2520 | * @rx_ring: ring to free buffers from | |
2521 | **/ | |
2522 | static void ixgbe_clean_rx_ring(struct ixgbe_adapter *adapter, | |
b4617240 | 2523 | struct ixgbe_ring *rx_ring) |
9a799d71 AK |
2524 | { |
2525 | struct pci_dev *pdev = adapter->pdev; | |
2526 | unsigned long size; | |
2527 | unsigned int i; | |
2528 | ||
2529 | /* Free all the Rx ring sk_buffs */ | |
2530 | ||
2531 | for (i = 0; i < rx_ring->count; i++) { | |
2532 | struct ixgbe_rx_buffer *rx_buffer_info; | |
2533 | ||
2534 | rx_buffer_info = &rx_ring->rx_buffer_info[i]; | |
2535 | if (rx_buffer_info->dma) { | |
2536 | pci_unmap_single(pdev, rx_buffer_info->dma, | |
b4617240 PW |
2537 | rx_ring->rx_buf_len, |
2538 | PCI_DMA_FROMDEVICE); | |
9a799d71 AK |
2539 | rx_buffer_info->dma = 0; |
2540 | } | |
2541 | if (rx_buffer_info->skb) { | |
f8212f97 | 2542 | struct sk_buff *skb = rx_buffer_info->skb; |
9a799d71 | 2543 | rx_buffer_info->skb = NULL; |
f8212f97 AD |
2544 | do { |
2545 | struct sk_buff *this = skb; | |
2546 | skb = skb->prev; | |
2547 | dev_kfree_skb(this); | |
2548 | } while (skb); | |
9a799d71 AK |
2549 | } |
2550 | if (!rx_buffer_info->page) | |
2551 | continue; | |
762f4c57 JB |
2552 | pci_unmap_page(pdev, rx_buffer_info->page_dma, PAGE_SIZE / 2, |
2553 | PCI_DMA_FROMDEVICE); | |
9a799d71 | 2554 | rx_buffer_info->page_dma = 0; |
9a799d71 AK |
2555 | put_page(rx_buffer_info->page); |
2556 | rx_buffer_info->page = NULL; | |
762f4c57 | 2557 | rx_buffer_info->page_offset = 0; |
9a799d71 AK |
2558 | } |
2559 | ||
2560 | size = sizeof(struct ixgbe_rx_buffer) * rx_ring->count; | |
2561 | memset(rx_ring->rx_buffer_info, 0, size); | |
2562 | ||
2563 | /* Zero out the descriptor ring */ | |
2564 | memset(rx_ring->desc, 0, rx_ring->size); | |
2565 | ||
2566 | rx_ring->next_to_clean = 0; | |
2567 | rx_ring->next_to_use = 0; | |
2568 | ||
9891ca7c JB |
2569 | if (rx_ring->head) |
2570 | writel(0, adapter->hw.hw_addr + rx_ring->head); | |
2571 | if (rx_ring->tail) | |
2572 | writel(0, adapter->hw.hw_addr + rx_ring->tail); | |
9a799d71 AK |
2573 | } |
2574 | ||
2575 | /** | |
2576 | * ixgbe_clean_tx_ring - Free Tx Buffers | |
2577 | * @adapter: board private structure | |
2578 | * @tx_ring: ring to be cleaned | |
2579 | **/ | |
2580 | static void ixgbe_clean_tx_ring(struct ixgbe_adapter *adapter, | |
b4617240 | 2581 | struct ixgbe_ring *tx_ring) |
9a799d71 AK |
2582 | { |
2583 | struct ixgbe_tx_buffer *tx_buffer_info; | |
2584 | unsigned long size; | |
2585 | unsigned int i; | |
2586 | ||
2587 | /* Free all the Tx ring sk_buffs */ | |
2588 | ||
2589 | for (i = 0; i < tx_ring->count; i++) { | |
2590 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; | |
2591 | ixgbe_unmap_and_free_tx_resource(adapter, tx_buffer_info); | |
2592 | } | |
2593 | ||
2594 | size = sizeof(struct ixgbe_tx_buffer) * tx_ring->count; | |
2595 | memset(tx_ring->tx_buffer_info, 0, size); | |
2596 | ||
2597 | /* Zero out the descriptor ring */ | |
2598 | memset(tx_ring->desc, 0, tx_ring->size); | |
2599 | ||
2600 | tx_ring->next_to_use = 0; | |
2601 | tx_ring->next_to_clean = 0; | |
2602 | ||
9891ca7c JB |
2603 | if (tx_ring->head) |
2604 | writel(0, adapter->hw.hw_addr + tx_ring->head); | |
2605 | if (tx_ring->tail) | |
2606 | writel(0, adapter->hw.hw_addr + tx_ring->tail); | |
9a799d71 AK |
2607 | } |
2608 | ||
2609 | /** | |
021230d4 | 2610 | * ixgbe_clean_all_rx_rings - Free Rx Buffers for all queues |
9a799d71 AK |
2611 | * @adapter: board private structure |
2612 | **/ | |
021230d4 | 2613 | static void ixgbe_clean_all_rx_rings(struct ixgbe_adapter *adapter) |
9a799d71 AK |
2614 | { |
2615 | int i; | |
2616 | ||
021230d4 AV |
2617 | for (i = 0; i < adapter->num_rx_queues; i++) |
2618 | ixgbe_clean_rx_ring(adapter, &adapter->rx_ring[i]); | |
9a799d71 AK |
2619 | } |
2620 | ||
2621 | /** | |
021230d4 | 2622 | * ixgbe_clean_all_tx_rings - Free Tx Buffers for all queues |
9a799d71 AK |
2623 | * @adapter: board private structure |
2624 | **/ | |
021230d4 | 2625 | static void ixgbe_clean_all_tx_rings(struct ixgbe_adapter *adapter) |
9a799d71 AK |
2626 | { |
2627 | int i; | |
2628 | ||
021230d4 AV |
2629 | for (i = 0; i < adapter->num_tx_queues; i++) |
2630 | ixgbe_clean_tx_ring(adapter, &adapter->tx_ring[i]); | |
9a799d71 AK |
2631 | } |
2632 | ||
2633 | void ixgbe_down(struct ixgbe_adapter *adapter) | |
2634 | { | |
2635 | struct net_device *netdev = adapter->netdev; | |
7f821875 | 2636 | struct ixgbe_hw *hw = &adapter->hw; |
9a799d71 | 2637 | u32 rxctrl; |
7f821875 JB |
2638 | u32 txdctl; |
2639 | int i, j; | |
9a799d71 AK |
2640 | |
2641 | /* signal that we are down to the interrupt handler */ | |
2642 | set_bit(__IXGBE_DOWN, &adapter->state); | |
2643 | ||
2644 | /* disable receives */ | |
7f821875 JB |
2645 | rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL); |
2646 | IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, rxctrl & ~IXGBE_RXCTRL_RXEN); | |
9a799d71 AK |
2647 | |
2648 | netif_tx_disable(netdev); | |
2649 | ||
7f821875 | 2650 | IXGBE_WRITE_FLUSH(hw); |
9a799d71 AK |
2651 | msleep(10); |
2652 | ||
7f821875 JB |
2653 | netif_tx_stop_all_queues(netdev); |
2654 | ||
9a799d71 AK |
2655 | ixgbe_irq_disable(adapter); |
2656 | ||
021230d4 | 2657 | ixgbe_napi_disable_all(adapter); |
7f821875 | 2658 | |
9a799d71 | 2659 | del_timer_sync(&adapter->watchdog_timer); |
cf8280ee | 2660 | cancel_work_sync(&adapter->watchdog_task); |
9a799d71 | 2661 | |
7f821875 JB |
2662 | /* disable transmits in the hardware now that interrupts are off */ |
2663 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
2664 | j = adapter->tx_ring[i].reg_idx; | |
2665 | txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(j)); | |
2666 | IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(j), | |
2667 | (txdctl & ~IXGBE_TXDCTL_ENABLE)); | |
2668 | } | |
88512539 PW |
2669 | /* Disable the Tx DMA engine on 82599 */ |
2670 | if (hw->mac.type == ixgbe_mac_82599EB) | |
2671 | IXGBE_WRITE_REG(hw, IXGBE_DMATXCTL, | |
2672 | (IXGBE_READ_REG(hw, IXGBE_DMATXCTL) & | |
2673 | ~IXGBE_DMATXCTL_TE)); | |
7f821875 | 2674 | |
9a799d71 | 2675 | netif_carrier_off(netdev); |
9a799d71 | 2676 | |
5dd2d332 | 2677 | #ifdef CONFIG_IXGBE_DCA |
96b0e0f6 JB |
2678 | if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) { |
2679 | adapter->flags &= ~IXGBE_FLAG_DCA_ENABLED; | |
2680 | dca_remove_requester(&adapter->pdev->dev); | |
2681 | } | |
2682 | ||
2683 | #endif | |
6f4a0e45 PL |
2684 | if (!pci_channel_offline(adapter->pdev)) |
2685 | ixgbe_reset(adapter); | |
9a799d71 AK |
2686 | ixgbe_clean_all_tx_rings(adapter); |
2687 | ixgbe_clean_all_rx_rings(adapter); | |
2688 | ||
5dd2d332 | 2689 | #ifdef CONFIG_IXGBE_DCA |
96b0e0f6 JB |
2690 | /* since we reset the hardware DCA settings were cleared */ |
2691 | if (dca_add_requester(&adapter->pdev->dev) == 0) { | |
2692 | adapter->flags |= IXGBE_FLAG_DCA_ENABLED; | |
2693 | /* always use CB2 mode, difference is masked | |
2694 | * in the CB driver */ | |
b4617240 | 2695 | IXGBE_WRITE_REG(hw, IXGBE_DCA_CTRL, 2); |
96b0e0f6 JB |
2696 | ixgbe_setup_dca(adapter); |
2697 | } | |
2698 | #endif | |
9a799d71 AK |
2699 | } |
2700 | ||
9a799d71 | 2701 | /** |
021230d4 AV |
2702 | * ixgbe_poll - NAPI Rx polling callback |
2703 | * @napi: structure for representing this polling device | |
2704 | * @budget: how many packets driver is allowed to clean | |
2705 | * | |
2706 | * This function is used for legacy and MSI, NAPI mode | |
9a799d71 | 2707 | **/ |
021230d4 | 2708 | static int ixgbe_poll(struct napi_struct *napi, int budget) |
9a799d71 | 2709 | { |
9a1a69ad JB |
2710 | struct ixgbe_q_vector *q_vector = |
2711 | container_of(napi, struct ixgbe_q_vector, napi); | |
021230d4 | 2712 | struct ixgbe_adapter *adapter = q_vector->adapter; |
9a1a69ad | 2713 | int tx_clean_complete, work_done = 0; |
9a799d71 | 2714 | |
5dd2d332 | 2715 | #ifdef CONFIG_IXGBE_DCA |
bd0362dd JC |
2716 | if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) { |
2717 | ixgbe_update_tx_dca(adapter, adapter->tx_ring); | |
2718 | ixgbe_update_rx_dca(adapter, adapter->rx_ring); | |
2719 | } | |
2720 | #endif | |
2721 | ||
9a1a69ad | 2722 | tx_clean_complete = ixgbe_clean_tx_irq(adapter, adapter->tx_ring); |
78b6f4ce | 2723 | ixgbe_clean_rx_irq(q_vector, adapter->rx_ring, &work_done, budget); |
9a799d71 | 2724 | |
9a1a69ad | 2725 | if (!tx_clean_complete) |
d2c7ddd6 DM |
2726 | work_done = budget; |
2727 | ||
53e52c72 DM |
2728 | /* If budget not fully consumed, exit the polling mode */ |
2729 | if (work_done < budget) { | |
288379f0 | 2730 | napi_complete(napi); |
509ee935 | 2731 | if (adapter->itr_setting & 1) |
f494e8fa | 2732 | ixgbe_set_itr(adapter); |
d4f80882 | 2733 | if (!test_bit(__IXGBE_DOWN, &adapter->state)) |
835462fc | 2734 | ixgbe_irq_enable_queues(adapter, IXGBE_EIMS_RTX_QUEUE); |
9a799d71 | 2735 | } |
9a799d71 AK |
2736 | return work_done; |
2737 | } | |
2738 | ||
2739 | /** | |
2740 | * ixgbe_tx_timeout - Respond to a Tx Hang | |
2741 | * @netdev: network interface device structure | |
2742 | **/ | |
2743 | static void ixgbe_tx_timeout(struct net_device *netdev) | |
2744 | { | |
2745 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
2746 | ||
2747 | /* Do the reset outside of interrupt context */ | |
2748 | schedule_work(&adapter->reset_task); | |
2749 | } | |
2750 | ||
2751 | static void ixgbe_reset_task(struct work_struct *work) | |
2752 | { | |
2753 | struct ixgbe_adapter *adapter; | |
2754 | adapter = container_of(work, struct ixgbe_adapter, reset_task); | |
2755 | ||
2f90b865 AD |
2756 | /* If we're already down or resetting, just bail */ |
2757 | if (test_bit(__IXGBE_DOWN, &adapter->state) || | |
2758 | test_bit(__IXGBE_RESETTING, &adapter->state)) | |
2759 | return; | |
2760 | ||
9a799d71 AK |
2761 | adapter->tx_timeout_count++; |
2762 | ||
d4f80882 | 2763 | ixgbe_reinit_locked(adapter); |
9a799d71 AK |
2764 | } |
2765 | ||
bc97114d PWJ |
2766 | #ifdef CONFIG_IXGBE_DCB |
2767 | static inline bool ixgbe_set_dcb_queues(struct ixgbe_adapter *adapter) | |
b9804972 | 2768 | { |
bc97114d | 2769 | bool ret = false; |
b9804972 | 2770 | |
bc97114d PWJ |
2771 | if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) { |
2772 | adapter->ring_feature[RING_F_DCB].mask = 0x7 << 3; | |
2773 | adapter->num_rx_queues = | |
2774 | adapter->ring_feature[RING_F_DCB].indices; | |
2775 | adapter->num_tx_queues = | |
2776 | adapter->ring_feature[RING_F_DCB].indices; | |
2777 | ret = true; | |
2778 | } else { | |
bc97114d PWJ |
2779 | ret = false; |
2780 | } | |
2f90b865 | 2781 | |
bc97114d PWJ |
2782 | return ret; |
2783 | } | |
2784 | #endif | |
2785 | ||
4df10466 JB |
2786 | /** |
2787 | * ixgbe_set_rss_queues: Allocate queues for RSS | |
2788 | * @adapter: board private structure to initialize | |
2789 | * | |
2790 | * This is our "base" multiqueue mode. RSS (Receive Side Scaling) will try | |
2791 | * to allocate one Rx queue per CPU, and if available, one Tx queue per CPU. | |
2792 | * | |
2793 | **/ | |
bc97114d PWJ |
2794 | static inline bool ixgbe_set_rss_queues(struct ixgbe_adapter *adapter) |
2795 | { | |
2796 | bool ret = false; | |
2797 | ||
2798 | if (adapter->flags & IXGBE_FLAG_RSS_ENABLED) { | |
2799 | adapter->ring_feature[RING_F_RSS].mask = 0xF; | |
2800 | adapter->num_rx_queues = | |
2801 | adapter->ring_feature[RING_F_RSS].indices; | |
2802 | adapter->num_tx_queues = | |
2803 | adapter->ring_feature[RING_F_RSS].indices; | |
2804 | ret = true; | |
2805 | } else { | |
bc97114d | 2806 | ret = false; |
b9804972 JB |
2807 | } |
2808 | ||
bc97114d PWJ |
2809 | return ret; |
2810 | } | |
2811 | ||
4df10466 JB |
2812 | /* |
2813 | * ixgbe_set_num_queues: Allocate queues for device, feature dependant | |
2814 | * @adapter: board private structure to initialize | |
2815 | * | |
2816 | * This is the top level queue allocation routine. The order here is very | |
2817 | * important, starting with the "most" number of features turned on at once, | |
2818 | * and ending with the smallest set of features. This way large combinations | |
2819 | * can be allocated if they're turned on, and smaller combinations are the | |
2820 | * fallthrough conditions. | |
2821 | * | |
2822 | **/ | |
bc97114d PWJ |
2823 | static void ixgbe_set_num_queues(struct ixgbe_adapter *adapter) |
2824 | { | |
bc97114d PWJ |
2825 | #ifdef CONFIG_IXGBE_DCB |
2826 | if (ixgbe_set_dcb_queues(adapter)) | |
af22ab1b | 2827 | goto done; |
bc97114d PWJ |
2828 | |
2829 | #endif | |
2830 | if (ixgbe_set_rss_queues(adapter)) | |
af22ab1b WF |
2831 | goto done; |
2832 | ||
2833 | /* fallback to base case */ | |
2834 | adapter->num_rx_queues = 1; | |
2835 | adapter->num_tx_queues = 1; | |
2836 | ||
2837 | done: | |
2838 | /* Notify the stack of the (possibly) reduced Tx Queue count. */ | |
2839 | adapter->netdev->real_num_tx_queues = adapter->num_tx_queues; | |
b9804972 JB |
2840 | } |
2841 | ||
021230d4 | 2842 | static void ixgbe_acquire_msix_vectors(struct ixgbe_adapter *adapter, |
b4617240 | 2843 | int vectors) |
021230d4 AV |
2844 | { |
2845 | int err, vector_threshold; | |
2846 | ||
2847 | /* We'll want at least 3 (vector_threshold): | |
2848 | * 1) TxQ[0] Cleanup | |
2849 | * 2) RxQ[0] Cleanup | |
2850 | * 3) Other (Link Status Change, etc.) | |
2851 | * 4) TCP Timer (optional) | |
2852 | */ | |
2853 | vector_threshold = MIN_MSIX_COUNT; | |
2854 | ||
2855 | /* The more we get, the more we will assign to Tx/Rx Cleanup | |
2856 | * for the separate queues...where Rx Cleanup >= Tx Cleanup. | |
2857 | * Right now, we simply care about how many we'll get; we'll | |
2858 | * set them up later while requesting irq's. | |
2859 | */ | |
2860 | while (vectors >= vector_threshold) { | |
2861 | err = pci_enable_msix(adapter->pdev, adapter->msix_entries, | |
b4617240 | 2862 | vectors); |
021230d4 AV |
2863 | if (!err) /* Success in acquiring all requested vectors. */ |
2864 | break; | |
2865 | else if (err < 0) | |
2866 | vectors = 0; /* Nasty failure, quit now */ | |
2867 | else /* err == number of vectors we should try again with */ | |
2868 | vectors = err; | |
2869 | } | |
2870 | ||
2871 | if (vectors < vector_threshold) { | |
2872 | /* Can't allocate enough MSI-X interrupts? Oh well. | |
2873 | * This just means we'll go with either a single MSI | |
2874 | * vector or fall back to legacy interrupts. | |
2875 | */ | |
2876 | DPRINTK(HW, DEBUG, "Unable to allocate MSI-X interrupts\n"); | |
2877 | adapter->flags &= ~IXGBE_FLAG_MSIX_ENABLED; | |
2878 | kfree(adapter->msix_entries); | |
2879 | adapter->msix_entries = NULL; | |
2f90b865 | 2880 | adapter->flags &= ~IXGBE_FLAG_DCB_ENABLED; |
021230d4 | 2881 | adapter->flags &= ~IXGBE_FLAG_RSS_ENABLED; |
b9804972 | 2882 | ixgbe_set_num_queues(adapter); |
021230d4 AV |
2883 | } else { |
2884 | adapter->flags |= IXGBE_FLAG_MSIX_ENABLED; /* Woot! */ | |
eb7f139c PWJ |
2885 | /* |
2886 | * Adjust for only the vectors we'll use, which is minimum | |
2887 | * of max_msix_q_vectors + NON_Q_VECTORS, or the number of | |
2888 | * vectors we were allocated. | |
2889 | */ | |
2890 | adapter->num_msix_vectors = min(vectors, | |
2891 | adapter->max_msix_q_vectors + NON_Q_VECTORS); | |
021230d4 AV |
2892 | } |
2893 | } | |
2894 | ||
021230d4 | 2895 | /** |
bc97114d | 2896 | * ixgbe_cache_ring_rss - Descriptor ring to register mapping for RSS |
021230d4 AV |
2897 | * @adapter: board private structure to initialize |
2898 | * | |
bc97114d PWJ |
2899 | * Cache the descriptor ring offsets for RSS to the assigned rings. |
2900 | * | |
021230d4 | 2901 | **/ |
bc97114d | 2902 | static inline bool ixgbe_cache_ring_rss(struct ixgbe_adapter *adapter) |
021230d4 | 2903 | { |
bc97114d PWJ |
2904 | int i; |
2905 | bool ret = false; | |
2906 | ||
2907 | if (adapter->flags & IXGBE_FLAG_RSS_ENABLED) { | |
2908 | for (i = 0; i < adapter->num_rx_queues; i++) | |
2909 | adapter->rx_ring[i].reg_idx = i; | |
2910 | for (i = 0; i < adapter->num_tx_queues; i++) | |
2911 | adapter->tx_ring[i].reg_idx = i; | |
2912 | ret = true; | |
2913 | } else { | |
2914 | ret = false; | |
2915 | } | |
2916 | ||
2917 | return ret; | |
2918 | } | |
2919 | ||
2920 | #ifdef CONFIG_IXGBE_DCB | |
2921 | /** | |
2922 | * ixgbe_cache_ring_dcb - Descriptor ring to register mapping for DCB | |
2923 | * @adapter: board private structure to initialize | |
2924 | * | |
2925 | * Cache the descriptor ring offsets for DCB to the assigned rings. | |
2926 | * | |
2927 | **/ | |
2928 | static inline bool ixgbe_cache_ring_dcb(struct ixgbe_adapter *adapter) | |
2929 | { | |
2930 | int i; | |
2931 | bool ret = false; | |
2932 | int dcb_i = adapter->ring_feature[RING_F_DCB].indices; | |
2933 | ||
2934 | if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) { | |
2935 | if (adapter->hw.mac.type == ixgbe_mac_82598EB) { | |
2f90b865 AD |
2936 | /* the number of queues is assumed to be symmetric */ |
2937 | for (i = 0; i < dcb_i; i++) { | |
2938 | adapter->rx_ring[i].reg_idx = i << 3; | |
2939 | adapter->tx_ring[i].reg_idx = i << 2; | |
2940 | } | |
bc97114d | 2941 | ret = true; |
e8e26350 | 2942 | } else if (adapter->hw.mac.type == ixgbe_mac_82599EB) { |
f92ef202 PW |
2943 | if (dcb_i == 8) { |
2944 | /* | |
2945 | * Tx TC0 starts at: descriptor queue 0 | |
2946 | * Tx TC1 starts at: descriptor queue 32 | |
2947 | * Tx TC2 starts at: descriptor queue 64 | |
2948 | * Tx TC3 starts at: descriptor queue 80 | |
2949 | * Tx TC4 starts at: descriptor queue 96 | |
2950 | * Tx TC5 starts at: descriptor queue 104 | |
2951 | * Tx TC6 starts at: descriptor queue 112 | |
2952 | * Tx TC7 starts at: descriptor queue 120 | |
2953 | * | |
2954 | * Rx TC0-TC7 are offset by 16 queues each | |
2955 | */ | |
2956 | for (i = 0; i < 3; i++) { | |
2957 | adapter->tx_ring[i].reg_idx = i << 5; | |
2958 | adapter->rx_ring[i].reg_idx = i << 4; | |
2959 | } | |
2960 | for ( ; i < 5; i++) { | |
2961 | adapter->tx_ring[i].reg_idx = | |
2962 | ((i + 2) << 4); | |
2963 | adapter->rx_ring[i].reg_idx = i << 4; | |
2964 | } | |
2965 | for ( ; i < dcb_i; i++) { | |
2966 | adapter->tx_ring[i].reg_idx = | |
2967 | ((i + 8) << 3); | |
2968 | adapter->rx_ring[i].reg_idx = i << 4; | |
2969 | } | |
2970 | ||
2971 | ret = true; | |
2972 | } else if (dcb_i == 4) { | |
2973 | /* | |
2974 | * Tx TC0 starts at: descriptor queue 0 | |
2975 | * Tx TC1 starts at: descriptor queue 64 | |
2976 | * Tx TC2 starts at: descriptor queue 96 | |
2977 | * Tx TC3 starts at: descriptor queue 112 | |
2978 | * | |
2979 | * Rx TC0-TC3 are offset by 32 queues each | |
2980 | */ | |
2981 | adapter->tx_ring[0].reg_idx = 0; | |
2982 | adapter->tx_ring[1].reg_idx = 64; | |
2983 | adapter->tx_ring[2].reg_idx = 96; | |
2984 | adapter->tx_ring[3].reg_idx = 112; | |
2985 | for (i = 0 ; i < dcb_i; i++) | |
2986 | adapter->rx_ring[i].reg_idx = i << 5; | |
2987 | ||
2988 | ret = true; | |
2989 | } else { | |
2990 | ret = false; | |
e8e26350 | 2991 | } |
bc97114d PWJ |
2992 | } else { |
2993 | ret = false; | |
021230d4 | 2994 | } |
bc97114d PWJ |
2995 | } else { |
2996 | ret = false; | |
021230d4 | 2997 | } |
bc97114d PWJ |
2998 | |
2999 | return ret; | |
3000 | } | |
3001 | #endif | |
3002 | ||
3003 | /** | |
3004 | * ixgbe_cache_ring_register - Descriptor ring to register mapping | |
3005 | * @adapter: board private structure to initialize | |
3006 | * | |
3007 | * Once we know the feature-set enabled for the device, we'll cache | |
3008 | * the register offset the descriptor ring is assigned to. | |
3009 | * | |
3010 | * Note, the order the various feature calls is important. It must start with | |
3011 | * the "most" features enabled at the same time, then trickle down to the | |
3012 | * least amount of features turned on at once. | |
3013 | **/ | |
3014 | static void ixgbe_cache_ring_register(struct ixgbe_adapter *adapter) | |
3015 | { | |
3016 | /* start with default case */ | |
3017 | adapter->rx_ring[0].reg_idx = 0; | |
3018 | adapter->tx_ring[0].reg_idx = 0; | |
3019 | ||
3020 | #ifdef CONFIG_IXGBE_DCB | |
3021 | if (ixgbe_cache_ring_dcb(adapter)) | |
3022 | return; | |
3023 | ||
3024 | #endif | |
3025 | if (ixgbe_cache_ring_rss(adapter)) | |
3026 | return; | |
021230d4 AV |
3027 | } |
3028 | ||
9a799d71 AK |
3029 | /** |
3030 | * ixgbe_alloc_queues - Allocate memory for all rings | |
3031 | * @adapter: board private structure to initialize | |
3032 | * | |
3033 | * We allocate one ring per queue at run-time since we don't know the | |
4df10466 JB |
3034 | * number of queues at compile-time. The polling_netdev array is |
3035 | * intended for Multiqueue, but should work fine with a single queue. | |
9a799d71 | 3036 | **/ |
2f90b865 | 3037 | static int ixgbe_alloc_queues(struct ixgbe_adapter *adapter) |
9a799d71 AK |
3038 | { |
3039 | int i; | |
3040 | ||
3041 | adapter->tx_ring = kcalloc(adapter->num_tx_queues, | |
b4617240 | 3042 | sizeof(struct ixgbe_ring), GFP_KERNEL); |
9a799d71 | 3043 | if (!adapter->tx_ring) |
021230d4 | 3044 | goto err_tx_ring_allocation; |
9a799d71 AK |
3045 | |
3046 | adapter->rx_ring = kcalloc(adapter->num_rx_queues, | |
b4617240 | 3047 | sizeof(struct ixgbe_ring), GFP_KERNEL); |
021230d4 AV |
3048 | if (!adapter->rx_ring) |
3049 | goto err_rx_ring_allocation; | |
9a799d71 | 3050 | |
021230d4 | 3051 | for (i = 0; i < adapter->num_tx_queues; i++) { |
b9804972 | 3052 | adapter->tx_ring[i].count = adapter->tx_ring_count; |
021230d4 AV |
3053 | adapter->tx_ring[i].queue_index = i; |
3054 | } | |
b9804972 | 3055 | |
9a799d71 | 3056 | for (i = 0; i < adapter->num_rx_queues; i++) { |
b9804972 | 3057 | adapter->rx_ring[i].count = adapter->rx_ring_count; |
021230d4 AV |
3058 | adapter->rx_ring[i].queue_index = i; |
3059 | } | |
3060 | ||
3061 | ixgbe_cache_ring_register(adapter); | |
3062 | ||
3063 | return 0; | |
3064 | ||
3065 | err_rx_ring_allocation: | |
3066 | kfree(adapter->tx_ring); | |
3067 | err_tx_ring_allocation: | |
3068 | return -ENOMEM; | |
3069 | } | |
3070 | ||
3071 | /** | |
3072 | * ixgbe_set_interrupt_capability - set MSI-X or MSI if supported | |
3073 | * @adapter: board private structure to initialize | |
3074 | * | |
3075 | * Attempt to configure the interrupts using the best available | |
3076 | * capabilities of the hardware and the kernel. | |
3077 | **/ | |
feea6a57 | 3078 | static int ixgbe_set_interrupt_capability(struct ixgbe_adapter *adapter) |
021230d4 | 3079 | { |
8be0e467 | 3080 | struct ixgbe_hw *hw = &adapter->hw; |
021230d4 AV |
3081 | int err = 0; |
3082 | int vector, v_budget; | |
3083 | ||
3084 | /* | |
3085 | * It's easy to be greedy for MSI-X vectors, but it really | |
3086 | * doesn't do us much good if we have a lot more vectors | |
3087 | * than CPU's. So let's be conservative and only ask for | |
3088 | * (roughly) twice the number of vectors as there are CPU's. | |
3089 | */ | |
3090 | v_budget = min(adapter->num_rx_queues + adapter->num_tx_queues, | |
b4617240 | 3091 | (int)(num_online_cpus() * 2)) + NON_Q_VECTORS; |
021230d4 AV |
3092 | |
3093 | /* | |
3094 | * At the same time, hardware can only support a maximum of | |
8be0e467 PW |
3095 | * hw.mac->max_msix_vectors vectors. With features |
3096 | * such as RSS and VMDq, we can easily surpass the number of Rx and Tx | |
3097 | * descriptor queues supported by our device. Thus, we cap it off in | |
3098 | * those rare cases where the cpu count also exceeds our vector limit. | |
021230d4 | 3099 | */ |
8be0e467 | 3100 | v_budget = min(v_budget, (int)hw->mac.max_msix_vectors); |
021230d4 AV |
3101 | |
3102 | /* A failure in MSI-X entry allocation isn't fatal, but it does | |
3103 | * mean we disable MSI-X capabilities of the adapter. */ | |
3104 | adapter->msix_entries = kcalloc(v_budget, | |
b4617240 | 3105 | sizeof(struct msix_entry), GFP_KERNEL); |
021230d4 | 3106 | if (!adapter->msix_entries) { |
2f90b865 | 3107 | adapter->flags &= ~IXGBE_FLAG_DCB_ENABLED; |
021230d4 AV |
3108 | adapter->flags &= ~IXGBE_FLAG_RSS_ENABLED; |
3109 | ixgbe_set_num_queues(adapter); | |
3110 | kfree(adapter->tx_ring); | |
3111 | kfree(adapter->rx_ring); | |
3112 | err = ixgbe_alloc_queues(adapter); | |
3113 | if (err) { | |
3114 | DPRINTK(PROBE, ERR, "Unable to allocate memory " | |
b4617240 | 3115 | "for queues\n"); |
021230d4 AV |
3116 | goto out; |
3117 | } | |
3118 | ||
3119 | goto try_msi; | |
3120 | } | |
3121 | ||
3122 | for (vector = 0; vector < v_budget; vector++) | |
3123 | adapter->msix_entries[vector].entry = vector; | |
3124 | ||
3125 | ixgbe_acquire_msix_vectors(adapter, v_budget); | |
3126 | ||
3127 | if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) | |
3128 | goto out; | |
3129 | ||
3130 | try_msi: | |
3131 | err = pci_enable_msi(adapter->pdev); | |
3132 | if (!err) { | |
3133 | adapter->flags |= IXGBE_FLAG_MSI_ENABLED; | |
3134 | } else { | |
3135 | DPRINTK(HW, DEBUG, "Unable to allocate MSI interrupt, " | |
b4617240 | 3136 | "falling back to legacy. Error: %d\n", err); |
021230d4 AV |
3137 | /* reset err */ |
3138 | err = 0; | |
3139 | } | |
3140 | ||
3141 | out: | |
021230d4 AV |
3142 | return err; |
3143 | } | |
3144 | ||
2f90b865 | 3145 | void ixgbe_reset_interrupt_capability(struct ixgbe_adapter *adapter) |
021230d4 AV |
3146 | { |
3147 | if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) { | |
3148 | adapter->flags &= ~IXGBE_FLAG_MSIX_ENABLED; | |
3149 | pci_disable_msix(adapter->pdev); | |
3150 | kfree(adapter->msix_entries); | |
3151 | adapter->msix_entries = NULL; | |
3152 | } else if (adapter->flags & IXGBE_FLAG_MSI_ENABLED) { | |
3153 | adapter->flags &= ~IXGBE_FLAG_MSI_ENABLED; | |
3154 | pci_disable_msi(adapter->pdev); | |
3155 | } | |
3156 | return; | |
3157 | } | |
3158 | ||
3159 | /** | |
3160 | * ixgbe_init_interrupt_scheme - Determine proper interrupt scheme | |
3161 | * @adapter: board private structure to initialize | |
3162 | * | |
3163 | * We determine which interrupt scheme to use based on... | |
3164 | * - Kernel support (MSI, MSI-X) | |
3165 | * - which can be user-defined (via MODULE_PARAM) | |
3166 | * - Hardware queue count (num_*_queues) | |
3167 | * - defined by miscellaneous hardware support/features (RSS, etc.) | |
3168 | **/ | |
2f90b865 | 3169 | int ixgbe_init_interrupt_scheme(struct ixgbe_adapter *adapter) |
021230d4 AV |
3170 | { |
3171 | int err; | |
3172 | ||
3173 | /* Number of supported queues */ | |
3174 | ixgbe_set_num_queues(adapter); | |
3175 | ||
3176 | err = ixgbe_alloc_queues(adapter); | |
3177 | if (err) { | |
3178 | DPRINTK(PROBE, ERR, "Unable to allocate memory for queues\n"); | |
3179 | goto err_alloc_queues; | |
3180 | } | |
3181 | ||
3182 | err = ixgbe_set_interrupt_capability(adapter); | |
3183 | if (err) { | |
3184 | DPRINTK(PROBE, ERR, "Unable to setup interrupt capabilities\n"); | |
3185 | goto err_set_interrupt; | |
9a799d71 AK |
3186 | } |
3187 | ||
021230d4 | 3188 | DPRINTK(DRV, INFO, "Multiqueue %s: Rx Queue count = %u, " |
b4617240 PW |
3189 | "Tx Queue count = %u\n", |
3190 | (adapter->num_rx_queues > 1) ? "Enabled" : | |
3191 | "Disabled", adapter->num_rx_queues, adapter->num_tx_queues); | |
021230d4 AV |
3192 | |
3193 | set_bit(__IXGBE_DOWN, &adapter->state); | |
3194 | ||
9a799d71 | 3195 | return 0; |
021230d4 AV |
3196 | |
3197 | err_set_interrupt: | |
3198 | kfree(adapter->tx_ring); | |
3199 | kfree(adapter->rx_ring); | |
3200 | err_alloc_queues: | |
3201 | return err; | |
9a799d71 AK |
3202 | } |
3203 | ||
c4900be0 DS |
3204 | /** |
3205 | * ixgbe_sfp_timer - worker thread to find a missing module | |
3206 | * @data: pointer to our adapter struct | |
3207 | **/ | |
3208 | static void ixgbe_sfp_timer(unsigned long data) | |
3209 | { | |
3210 | struct ixgbe_adapter *adapter = (struct ixgbe_adapter *)data; | |
3211 | ||
4df10466 JB |
3212 | /* |
3213 | * Do the sfp_timer outside of interrupt context due to the | |
c4900be0 DS |
3214 | * delays that sfp+ detection requires |
3215 | */ | |
3216 | schedule_work(&adapter->sfp_task); | |
3217 | } | |
3218 | ||
3219 | /** | |
3220 | * ixgbe_sfp_task - worker thread to find a missing module | |
3221 | * @work: pointer to work_struct containing our data | |
3222 | **/ | |
3223 | static void ixgbe_sfp_task(struct work_struct *work) | |
3224 | { | |
3225 | struct ixgbe_adapter *adapter = container_of(work, | |
3226 | struct ixgbe_adapter, | |
3227 | sfp_task); | |
3228 | struct ixgbe_hw *hw = &adapter->hw; | |
3229 | ||
3230 | if ((hw->phy.type == ixgbe_phy_nl) && | |
3231 | (hw->phy.sfp_type == ixgbe_sfp_type_not_present)) { | |
3232 | s32 ret = hw->phy.ops.identify_sfp(hw); | |
3233 | if (ret) | |
3234 | goto reschedule; | |
3235 | ret = hw->phy.ops.reset(hw); | |
3236 | if (ret == IXGBE_ERR_SFP_NOT_SUPPORTED) { | |
3237 | DPRINTK(PROBE, ERR, "failed to initialize because an " | |
3238 | "unsupported SFP+ module type was detected.\n" | |
3239 | "Reload the driver after installing a " | |
3240 | "supported module.\n"); | |
3241 | unregister_netdev(adapter->netdev); | |
3242 | } else { | |
3243 | DPRINTK(PROBE, INFO, "detected SFP+: %d\n", | |
3244 | hw->phy.sfp_type); | |
3245 | } | |
3246 | /* don't need this routine any more */ | |
3247 | clear_bit(__IXGBE_SFP_MODULE_NOT_FOUND, &adapter->state); | |
3248 | } | |
3249 | return; | |
3250 | reschedule: | |
3251 | if (test_bit(__IXGBE_SFP_MODULE_NOT_FOUND, &adapter->state)) | |
3252 | mod_timer(&adapter->sfp_timer, | |
3253 | round_jiffies(jiffies + (2 * HZ))); | |
3254 | } | |
3255 | ||
9a799d71 AK |
3256 | /** |
3257 | * ixgbe_sw_init - Initialize general software structures (struct ixgbe_adapter) | |
3258 | * @adapter: board private structure to initialize | |
3259 | * | |
3260 | * ixgbe_sw_init initializes the Adapter private data structure. | |
3261 | * Fields are initialized based on PCI device information and | |
3262 | * OS network device settings (MTU size). | |
3263 | **/ | |
3264 | static int __devinit ixgbe_sw_init(struct ixgbe_adapter *adapter) | |
3265 | { | |
3266 | struct ixgbe_hw *hw = &adapter->hw; | |
3267 | struct pci_dev *pdev = adapter->pdev; | |
021230d4 | 3268 | unsigned int rss; |
7a6b6f51 | 3269 | #ifdef CONFIG_IXGBE_DCB |
2f90b865 AD |
3270 | int j; |
3271 | struct tc_configuration *tc; | |
3272 | #endif | |
021230d4 | 3273 | |
c44ade9e JB |
3274 | /* PCI config space info */ |
3275 | ||
3276 | hw->vendor_id = pdev->vendor; | |
3277 | hw->device_id = pdev->device; | |
3278 | hw->revision_id = pdev->revision; | |
3279 | hw->subsystem_vendor_id = pdev->subsystem_vendor; | |
3280 | hw->subsystem_device_id = pdev->subsystem_device; | |
3281 | ||
021230d4 AV |
3282 | /* Set capability flags */ |
3283 | rss = min(IXGBE_MAX_RSS_INDICES, (int)num_online_cpus()); | |
3284 | adapter->ring_feature[RING_F_RSS].indices = rss; | |
3285 | adapter->flags |= IXGBE_FLAG_RSS_ENABLED; | |
2f90b865 | 3286 | adapter->ring_feature[RING_F_DCB].indices = IXGBE_MAX_DCB_INDICES; |
e8e26350 PW |
3287 | if (hw->mac.type == ixgbe_mac_82598EB) |
3288 | adapter->max_msix_q_vectors = MAX_MSIX_Q_VECTORS_82598; | |
f8212f97 | 3289 | else if (hw->mac.type == ixgbe_mac_82599EB) { |
e8e26350 | 3290 | adapter->max_msix_q_vectors = MAX_MSIX_Q_VECTORS_82599; |
f8212f97 AD |
3291 | adapter->flags |= IXGBE_FLAG_RSC_CAPABLE; |
3292 | adapter->flags |= IXGBE_FLAG_RSC_ENABLED; | |
3293 | } | |
2f90b865 | 3294 | |
7a6b6f51 | 3295 | #ifdef CONFIG_IXGBE_DCB |
2f90b865 AD |
3296 | /* Configure DCB traffic classes */ |
3297 | for (j = 0; j < MAX_TRAFFIC_CLASS; j++) { | |
3298 | tc = &adapter->dcb_cfg.tc_config[j]; | |
3299 | tc->path[DCB_TX_CONFIG].bwg_id = 0; | |
3300 | tc->path[DCB_TX_CONFIG].bwg_percent = 12 + (j & 1); | |
3301 | tc->path[DCB_RX_CONFIG].bwg_id = 0; | |
3302 | tc->path[DCB_RX_CONFIG].bwg_percent = 12 + (j & 1); | |
3303 | tc->dcb_pfc = pfc_disabled; | |
3304 | } | |
3305 | adapter->dcb_cfg.bw_percentage[DCB_TX_CONFIG][0] = 100; | |
3306 | adapter->dcb_cfg.bw_percentage[DCB_RX_CONFIG][0] = 100; | |
3307 | adapter->dcb_cfg.rx_pba_cfg = pba_equal; | |
3308 | adapter->dcb_cfg.round_robin_enable = false; | |
3309 | adapter->dcb_set_bitmap = 0x00; | |
3310 | ixgbe_copy_dcb_cfg(&adapter->dcb_cfg, &adapter->temp_dcb_cfg, | |
3311 | adapter->ring_feature[RING_F_DCB].indices); | |
3312 | ||
3313 | #endif | |
9a799d71 AK |
3314 | |
3315 | /* default flow control settings */ | |
cd7664f6 | 3316 | hw->fc.requested_mode = ixgbe_fc_full; |
71fd570b | 3317 | hw->fc.current_mode = ixgbe_fc_full; /* init for ethtool output */ |
2b9ade93 JB |
3318 | hw->fc.high_water = IXGBE_DEFAULT_FCRTH; |
3319 | hw->fc.low_water = IXGBE_DEFAULT_FCRTL; | |
3320 | hw->fc.pause_time = IXGBE_DEFAULT_FCPAUSE; | |
3321 | hw->fc.send_xon = true; | |
71fd570b | 3322 | hw->fc.disable_fc_autoneg = false; |
9a799d71 | 3323 | |
30efa5a3 JB |
3324 | /* enable itr by default in dynamic mode */ |
3325 | adapter->itr_setting = 1; | |
3326 | adapter->eitr_param = 20000; | |
3327 | ||
3328 | /* set defaults for eitr in MegaBytes */ | |
3329 | adapter->eitr_low = 10; | |
3330 | adapter->eitr_high = 20; | |
3331 | ||
3332 | /* set default ring sizes */ | |
3333 | adapter->tx_ring_count = IXGBE_DEFAULT_TXD; | |
3334 | adapter->rx_ring_count = IXGBE_DEFAULT_RXD; | |
3335 | ||
9a799d71 | 3336 | /* initialize eeprom parameters */ |
c44ade9e | 3337 | if (ixgbe_init_eeprom_params_generic(hw)) { |
9a799d71 AK |
3338 | dev_err(&pdev->dev, "EEPROM initialization failed\n"); |
3339 | return -EIO; | |
3340 | } | |
3341 | ||
021230d4 | 3342 | /* enable rx csum by default */ |
9a799d71 AK |
3343 | adapter->flags |= IXGBE_FLAG_RX_CSUM_ENABLED; |
3344 | ||
9a799d71 AK |
3345 | set_bit(__IXGBE_DOWN, &adapter->state); |
3346 | ||
3347 | return 0; | |
3348 | } | |
3349 | ||
3350 | /** | |
3351 | * ixgbe_setup_tx_resources - allocate Tx resources (Descriptors) | |
3352 | * @adapter: board private structure | |
3a581073 | 3353 | * @tx_ring: tx descriptor ring (for a specific queue) to setup |
9a799d71 AK |
3354 | * |
3355 | * Return 0 on success, negative on failure | |
3356 | **/ | |
3357 | int ixgbe_setup_tx_resources(struct ixgbe_adapter *adapter, | |
e01c31a5 | 3358 | struct ixgbe_ring *tx_ring) |
9a799d71 AK |
3359 | { |
3360 | struct pci_dev *pdev = adapter->pdev; | |
3361 | int size; | |
3362 | ||
3a581073 JB |
3363 | size = sizeof(struct ixgbe_tx_buffer) * tx_ring->count; |
3364 | tx_ring->tx_buffer_info = vmalloc(size); | |
e01c31a5 JB |
3365 | if (!tx_ring->tx_buffer_info) |
3366 | goto err; | |
3a581073 | 3367 | memset(tx_ring->tx_buffer_info, 0, size); |
9a799d71 AK |
3368 | |
3369 | /* round up to nearest 4K */ | |
12207e49 | 3370 | tx_ring->size = tx_ring->count * sizeof(union ixgbe_adv_tx_desc); |
3a581073 | 3371 | tx_ring->size = ALIGN(tx_ring->size, 4096); |
9a799d71 | 3372 | |
3a581073 JB |
3373 | tx_ring->desc = pci_alloc_consistent(pdev, tx_ring->size, |
3374 | &tx_ring->dma); | |
e01c31a5 JB |
3375 | if (!tx_ring->desc) |
3376 | goto err; | |
9a799d71 | 3377 | |
3a581073 JB |
3378 | tx_ring->next_to_use = 0; |
3379 | tx_ring->next_to_clean = 0; | |
3380 | tx_ring->work_limit = tx_ring->count; | |
9a799d71 | 3381 | return 0; |
e01c31a5 JB |
3382 | |
3383 | err: | |
3384 | vfree(tx_ring->tx_buffer_info); | |
3385 | tx_ring->tx_buffer_info = NULL; | |
3386 | DPRINTK(PROBE, ERR, "Unable to allocate memory for the transmit " | |
3387 | "descriptor ring\n"); | |
3388 | return -ENOMEM; | |
9a799d71 AK |
3389 | } |
3390 | ||
69888674 AD |
3391 | /** |
3392 | * ixgbe_setup_all_tx_resources - allocate all queues Tx resources | |
3393 | * @adapter: board private structure | |
3394 | * | |
3395 | * If this function returns with an error, then it's possible one or | |
3396 | * more of the rings is populated (while the rest are not). It is the | |
3397 | * callers duty to clean those orphaned rings. | |
3398 | * | |
3399 | * Return 0 on success, negative on failure | |
3400 | **/ | |
3401 | static int ixgbe_setup_all_tx_resources(struct ixgbe_adapter *adapter) | |
3402 | { | |
3403 | int i, err = 0; | |
3404 | ||
3405 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
3406 | err = ixgbe_setup_tx_resources(adapter, &adapter->tx_ring[i]); | |
3407 | if (!err) | |
3408 | continue; | |
3409 | DPRINTK(PROBE, ERR, "Allocation for Tx Queue %u failed\n", i); | |
3410 | break; | |
3411 | } | |
3412 | ||
3413 | return err; | |
3414 | } | |
3415 | ||
9a799d71 AK |
3416 | /** |
3417 | * ixgbe_setup_rx_resources - allocate Rx resources (Descriptors) | |
3418 | * @adapter: board private structure | |
3a581073 | 3419 | * @rx_ring: rx descriptor ring (for a specific queue) to setup |
9a799d71 AK |
3420 | * |
3421 | * Returns 0 on success, negative on failure | |
3422 | **/ | |
3423 | int ixgbe_setup_rx_resources(struct ixgbe_adapter *adapter, | |
b4617240 | 3424 | struct ixgbe_ring *rx_ring) |
9a799d71 AK |
3425 | { |
3426 | struct pci_dev *pdev = adapter->pdev; | |
021230d4 | 3427 | int size; |
9a799d71 | 3428 | |
3a581073 JB |
3429 | size = sizeof(struct ixgbe_rx_buffer) * rx_ring->count; |
3430 | rx_ring->rx_buffer_info = vmalloc(size); | |
3431 | if (!rx_ring->rx_buffer_info) { | |
9a799d71 | 3432 | DPRINTK(PROBE, ERR, |
b4617240 | 3433 | "vmalloc allocation failed for the rx desc ring\n"); |
177db6ff | 3434 | goto alloc_failed; |
9a799d71 | 3435 | } |
3a581073 | 3436 | memset(rx_ring->rx_buffer_info, 0, size); |
9a799d71 | 3437 | |
9a799d71 | 3438 | /* Round up to nearest 4K */ |
3a581073 JB |
3439 | rx_ring->size = rx_ring->count * sizeof(union ixgbe_adv_rx_desc); |
3440 | rx_ring->size = ALIGN(rx_ring->size, 4096); | |
9a799d71 | 3441 | |
3a581073 | 3442 | rx_ring->desc = pci_alloc_consistent(pdev, rx_ring->size, &rx_ring->dma); |
9a799d71 | 3443 | |
3a581073 | 3444 | if (!rx_ring->desc) { |
9a799d71 | 3445 | DPRINTK(PROBE, ERR, |
b4617240 | 3446 | "Memory allocation failed for the rx desc ring\n"); |
3a581073 | 3447 | vfree(rx_ring->rx_buffer_info); |
177db6ff | 3448 | goto alloc_failed; |
9a799d71 AK |
3449 | } |
3450 | ||
3a581073 JB |
3451 | rx_ring->next_to_clean = 0; |
3452 | rx_ring->next_to_use = 0; | |
9a799d71 AK |
3453 | |
3454 | return 0; | |
177db6ff MC |
3455 | |
3456 | alloc_failed: | |
177db6ff | 3457 | return -ENOMEM; |
9a799d71 AK |
3458 | } |
3459 | ||
69888674 AD |
3460 | /** |
3461 | * ixgbe_setup_all_rx_resources - allocate all queues Rx resources | |
3462 | * @adapter: board private structure | |
3463 | * | |
3464 | * If this function returns with an error, then it's possible one or | |
3465 | * more of the rings is populated (while the rest are not). It is the | |
3466 | * callers duty to clean those orphaned rings. | |
3467 | * | |
3468 | * Return 0 on success, negative on failure | |
3469 | **/ | |
3470 | ||
3471 | static int ixgbe_setup_all_rx_resources(struct ixgbe_adapter *adapter) | |
3472 | { | |
3473 | int i, err = 0; | |
3474 | ||
3475 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
3476 | err = ixgbe_setup_rx_resources(adapter, &adapter->rx_ring[i]); | |
3477 | if (!err) | |
3478 | continue; | |
3479 | DPRINTK(PROBE, ERR, "Allocation for Rx Queue %u failed\n", i); | |
3480 | break; | |
3481 | } | |
3482 | ||
3483 | return err; | |
3484 | } | |
3485 | ||
9a799d71 AK |
3486 | /** |
3487 | * ixgbe_free_tx_resources - Free Tx Resources per Queue | |
3488 | * @adapter: board private structure | |
3489 | * @tx_ring: Tx descriptor ring for a specific queue | |
3490 | * | |
3491 | * Free all transmit software resources | |
3492 | **/ | |
c431f97e JB |
3493 | void ixgbe_free_tx_resources(struct ixgbe_adapter *adapter, |
3494 | struct ixgbe_ring *tx_ring) | |
9a799d71 AK |
3495 | { |
3496 | struct pci_dev *pdev = adapter->pdev; | |
3497 | ||
3498 | ixgbe_clean_tx_ring(adapter, tx_ring); | |
3499 | ||
3500 | vfree(tx_ring->tx_buffer_info); | |
3501 | tx_ring->tx_buffer_info = NULL; | |
3502 | ||
3503 | pci_free_consistent(pdev, tx_ring->size, tx_ring->desc, tx_ring->dma); | |
3504 | ||
3505 | tx_ring->desc = NULL; | |
3506 | } | |
3507 | ||
3508 | /** | |
3509 | * ixgbe_free_all_tx_resources - Free Tx Resources for All Queues | |
3510 | * @adapter: board private structure | |
3511 | * | |
3512 | * Free all transmit software resources | |
3513 | **/ | |
3514 | static void ixgbe_free_all_tx_resources(struct ixgbe_adapter *adapter) | |
3515 | { | |
3516 | int i; | |
3517 | ||
3518 | for (i = 0; i < adapter->num_tx_queues; i++) | |
9891ca7c JB |
3519 | if (adapter->tx_ring[i].desc) |
3520 | ixgbe_free_tx_resources(adapter, &adapter->tx_ring[i]); | |
9a799d71 AK |
3521 | } |
3522 | ||
3523 | /** | |
b4617240 | 3524 | * ixgbe_free_rx_resources - Free Rx Resources |
9a799d71 AK |
3525 | * @adapter: board private structure |
3526 | * @rx_ring: ring to clean the resources from | |
3527 | * | |
3528 | * Free all receive software resources | |
3529 | **/ | |
c431f97e JB |
3530 | void ixgbe_free_rx_resources(struct ixgbe_adapter *adapter, |
3531 | struct ixgbe_ring *rx_ring) | |
9a799d71 AK |
3532 | { |
3533 | struct pci_dev *pdev = adapter->pdev; | |
3534 | ||
3535 | ixgbe_clean_rx_ring(adapter, rx_ring); | |
3536 | ||
3537 | vfree(rx_ring->rx_buffer_info); | |
3538 | rx_ring->rx_buffer_info = NULL; | |
3539 | ||
3540 | pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma); | |
3541 | ||
3542 | rx_ring->desc = NULL; | |
3543 | } | |
3544 | ||
3545 | /** | |
3546 | * ixgbe_free_all_rx_resources - Free Rx Resources for All Queues | |
3547 | * @adapter: board private structure | |
3548 | * | |
3549 | * Free all receive software resources | |
3550 | **/ | |
3551 | static void ixgbe_free_all_rx_resources(struct ixgbe_adapter *adapter) | |
3552 | { | |
3553 | int i; | |
3554 | ||
3555 | for (i = 0; i < adapter->num_rx_queues; i++) | |
9891ca7c JB |
3556 | if (adapter->rx_ring[i].desc) |
3557 | ixgbe_free_rx_resources(adapter, &adapter->rx_ring[i]); | |
9a799d71 AK |
3558 | } |
3559 | ||
9a799d71 AK |
3560 | /** |
3561 | * ixgbe_change_mtu - Change the Maximum Transfer Unit | |
3562 | * @netdev: network interface device structure | |
3563 | * @new_mtu: new value for maximum frame size | |
3564 | * | |
3565 | * Returns 0 on success, negative on failure | |
3566 | **/ | |
3567 | static int ixgbe_change_mtu(struct net_device *netdev, int new_mtu) | |
3568 | { | |
3569 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
3570 | int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN; | |
3571 | ||
42c783c5 JB |
3572 | /* MTU < 68 is an error and causes problems on some kernels */ |
3573 | if ((new_mtu < 68) || (max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE)) | |
9a799d71 AK |
3574 | return -EINVAL; |
3575 | ||
021230d4 | 3576 | DPRINTK(PROBE, INFO, "changing MTU from %d to %d\n", |
b4617240 | 3577 | netdev->mtu, new_mtu); |
021230d4 | 3578 | /* must set new MTU before calling down or up */ |
9a799d71 AK |
3579 | netdev->mtu = new_mtu; |
3580 | ||
d4f80882 AV |
3581 | if (netif_running(netdev)) |
3582 | ixgbe_reinit_locked(adapter); | |
9a799d71 AK |
3583 | |
3584 | return 0; | |
3585 | } | |
3586 | ||
3587 | /** | |
3588 | * ixgbe_open - Called when a network interface is made active | |
3589 | * @netdev: network interface device structure | |
3590 | * | |
3591 | * Returns 0 on success, negative value on failure | |
3592 | * | |
3593 | * The open entry point is called when a network interface is made | |
3594 | * active by the system (IFF_UP). At this point all resources needed | |
3595 | * for transmit and receive operations are allocated, the interrupt | |
3596 | * handler is registered with the OS, the watchdog timer is started, | |
3597 | * and the stack is notified that the interface is ready. | |
3598 | **/ | |
3599 | static int ixgbe_open(struct net_device *netdev) | |
3600 | { | |
3601 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
3602 | int err; | |
4bebfaa5 AK |
3603 | |
3604 | /* disallow open during test */ | |
3605 | if (test_bit(__IXGBE_TESTING, &adapter->state)) | |
3606 | return -EBUSY; | |
9a799d71 | 3607 | |
54386467 JB |
3608 | netif_carrier_off(netdev); |
3609 | ||
9a799d71 AK |
3610 | /* allocate transmit descriptors */ |
3611 | err = ixgbe_setup_all_tx_resources(adapter); | |
3612 | if (err) | |
3613 | goto err_setup_tx; | |
3614 | ||
9a799d71 AK |
3615 | /* allocate receive descriptors */ |
3616 | err = ixgbe_setup_all_rx_resources(adapter); | |
3617 | if (err) | |
3618 | goto err_setup_rx; | |
3619 | ||
3620 | ixgbe_configure(adapter); | |
3621 | ||
4dd64df8 JB |
3622 | ixgbe_napi_add_all(adapter); |
3623 | ||
021230d4 | 3624 | err = ixgbe_request_irq(adapter); |
9a799d71 AK |
3625 | if (err) |
3626 | goto err_req_irq; | |
3627 | ||
9a799d71 AK |
3628 | err = ixgbe_up_complete(adapter); |
3629 | if (err) | |
3630 | goto err_up; | |
3631 | ||
d55b53ff JK |
3632 | netif_tx_start_all_queues(netdev); |
3633 | ||
9a799d71 AK |
3634 | return 0; |
3635 | ||
3636 | err_up: | |
5eba3699 | 3637 | ixgbe_release_hw_control(adapter); |
9a799d71 AK |
3638 | ixgbe_free_irq(adapter); |
3639 | err_req_irq: | |
9a799d71 | 3640 | err_setup_rx: |
a20a1199 | 3641 | ixgbe_free_all_rx_resources(adapter); |
9a799d71 | 3642 | err_setup_tx: |
a20a1199 | 3643 | ixgbe_free_all_tx_resources(adapter); |
9a799d71 AK |
3644 | ixgbe_reset(adapter); |
3645 | ||
3646 | return err; | |
3647 | } | |
3648 | ||
3649 | /** | |
3650 | * ixgbe_close - Disables a network interface | |
3651 | * @netdev: network interface device structure | |
3652 | * | |
3653 | * Returns 0, this is not allowed to fail | |
3654 | * | |
3655 | * The close entry point is called when an interface is de-activated | |
3656 | * by the OS. The hardware is still under the drivers control, but | |
3657 | * needs to be disabled. A global MAC reset is issued to stop the | |
3658 | * hardware, and all transmit and receive resources are freed. | |
3659 | **/ | |
3660 | static int ixgbe_close(struct net_device *netdev) | |
3661 | { | |
3662 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
9a799d71 AK |
3663 | |
3664 | ixgbe_down(adapter); | |
3665 | ixgbe_free_irq(adapter); | |
3666 | ||
3667 | ixgbe_free_all_tx_resources(adapter); | |
3668 | ixgbe_free_all_rx_resources(adapter); | |
3669 | ||
5eba3699 | 3670 | ixgbe_release_hw_control(adapter); |
9a799d71 AK |
3671 | |
3672 | return 0; | |
3673 | } | |
3674 | ||
b3c8b4ba AD |
3675 | /** |
3676 | * ixgbe_napi_add_all - prep napi structs for use | |
3677 | * @adapter: private struct | |
4dd64df8 | 3678 | * |
b3c8b4ba AD |
3679 | * helper function to napi_add each possible q_vector->napi |
3680 | */ | |
2f90b865 | 3681 | void ixgbe_napi_add_all(struct ixgbe_adapter *adapter) |
b3c8b4ba AD |
3682 | { |
3683 | int q_idx, q_vectors; | |
7adf1525 | 3684 | struct net_device *netdev = adapter->netdev; |
b3c8b4ba AD |
3685 | int (*poll)(struct napi_struct *, int); |
3686 | ||
7adf1525 PWJ |
3687 | /* check if we already have our netdev->napi_list populated */ |
3688 | if (&netdev->napi_list != netdev->napi_list.next) | |
3689 | return; | |
3690 | ||
b3c8b4ba AD |
3691 | if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) { |
3692 | poll = &ixgbe_clean_rxonly; | |
3693 | /* Only enable as many vectors as we have rx queues. */ | |
3694 | q_vectors = adapter->num_rx_queues; | |
3695 | } else { | |
3696 | poll = &ixgbe_poll; | |
3697 | /* only one q_vector for legacy modes */ | |
3698 | q_vectors = 1; | |
3699 | } | |
3700 | ||
3701 | for (q_idx = 0; q_idx < q_vectors; q_idx++) { | |
3702 | struct ixgbe_q_vector *q_vector = &adapter->q_vector[q_idx]; | |
3703 | netif_napi_add(adapter->netdev, &q_vector->napi, (*poll), 64); | |
3704 | } | |
3705 | } | |
3706 | ||
2f90b865 | 3707 | void ixgbe_napi_del_all(struct ixgbe_adapter *adapter) |
b3c8b4ba AD |
3708 | { |
3709 | int q_idx; | |
3710 | int q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS; | |
3711 | ||
3712 | /* legacy and MSI only use one vector */ | |
3713 | if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED)) | |
3714 | q_vectors = 1; | |
3715 | ||
3716 | for (q_idx = 0; q_idx < q_vectors; q_idx++) { | |
3717 | struct ixgbe_q_vector *q_vector = &adapter->q_vector[q_idx]; | |
3718 | if (!q_vector->rxr_count) | |
3719 | continue; | |
3720 | netif_napi_del(&q_vector->napi); | |
3721 | } | |
3722 | } | |
3723 | ||
3724 | #ifdef CONFIG_PM | |
3725 | static int ixgbe_resume(struct pci_dev *pdev) | |
3726 | { | |
3727 | struct net_device *netdev = pci_get_drvdata(pdev); | |
3728 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
3729 | u32 err; | |
3730 | ||
3731 | pci_set_power_state(pdev, PCI_D0); | |
3732 | pci_restore_state(pdev); | |
3733 | err = pci_enable_device(pdev); | |
3734 | if (err) { | |
69888674 | 3735 | printk(KERN_ERR "ixgbe: Cannot enable PCI device from " |
b3c8b4ba AD |
3736 | "suspend\n"); |
3737 | return err; | |
3738 | } | |
3739 | pci_set_master(pdev); | |
3740 | ||
dd4d8ca6 | 3741 | pci_wake_from_d3(pdev, false); |
b3c8b4ba AD |
3742 | |
3743 | err = ixgbe_init_interrupt_scheme(adapter); | |
3744 | if (err) { | |
3745 | printk(KERN_ERR "ixgbe: Cannot initialize interrupts for " | |
3746 | "device\n"); | |
3747 | return err; | |
3748 | } | |
3749 | ||
b3c8b4ba AD |
3750 | ixgbe_reset(adapter); |
3751 | ||
3752 | if (netif_running(netdev)) { | |
3753 | err = ixgbe_open(adapter->netdev); | |
3754 | if (err) | |
3755 | return err; | |
3756 | } | |
3757 | ||
3758 | netif_device_attach(netdev); | |
3759 | ||
3760 | return 0; | |
3761 | } | |
b3c8b4ba | 3762 | #endif /* CONFIG_PM */ |
9d8d05ae RW |
3763 | |
3764 | static int __ixgbe_shutdown(struct pci_dev *pdev, bool *enable_wake) | |
b3c8b4ba AD |
3765 | { |
3766 | struct net_device *netdev = pci_get_drvdata(pdev); | |
3767 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
e8e26350 PW |
3768 | struct ixgbe_hw *hw = &adapter->hw; |
3769 | u32 ctrl, fctrl; | |
3770 | u32 wufc = adapter->wol; | |
b3c8b4ba AD |
3771 | #ifdef CONFIG_PM |
3772 | int retval = 0; | |
3773 | #endif | |
3774 | ||
3775 | netif_device_detach(netdev); | |
3776 | ||
3777 | if (netif_running(netdev)) { | |
3778 | ixgbe_down(adapter); | |
3779 | ixgbe_free_irq(adapter); | |
3780 | ixgbe_free_all_tx_resources(adapter); | |
3781 | ixgbe_free_all_rx_resources(adapter); | |
3782 | } | |
3783 | ixgbe_reset_interrupt_capability(adapter); | |
3784 | ixgbe_napi_del_all(adapter); | |
7adf1525 | 3785 | INIT_LIST_HEAD(&netdev->napi_list); |
b3c8b4ba AD |
3786 | kfree(adapter->tx_ring); |
3787 | kfree(adapter->rx_ring); | |
3788 | ||
3789 | #ifdef CONFIG_PM | |
3790 | retval = pci_save_state(pdev); | |
3791 | if (retval) | |
3792 | return retval; | |
4df10466 | 3793 | |
b3c8b4ba | 3794 | #endif |
e8e26350 PW |
3795 | if (wufc) { |
3796 | ixgbe_set_rx_mode(netdev); | |
b3c8b4ba | 3797 | |
e8e26350 PW |
3798 | /* turn on all-multi mode if wake on multicast is enabled */ |
3799 | if (wufc & IXGBE_WUFC_MC) { | |
3800 | fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL); | |
3801 | fctrl |= IXGBE_FCTRL_MPE; | |
3802 | IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl); | |
3803 | } | |
3804 | ||
3805 | ctrl = IXGBE_READ_REG(hw, IXGBE_CTRL); | |
3806 | ctrl |= IXGBE_CTRL_GIO_DIS; | |
3807 | IXGBE_WRITE_REG(hw, IXGBE_CTRL, ctrl); | |
3808 | ||
3809 | IXGBE_WRITE_REG(hw, IXGBE_WUFC, wufc); | |
3810 | } else { | |
3811 | IXGBE_WRITE_REG(hw, IXGBE_WUC, 0); | |
3812 | IXGBE_WRITE_REG(hw, IXGBE_WUFC, 0); | |
3813 | } | |
3814 | ||
dd4d8ca6 DS |
3815 | if (wufc && hw->mac.type == ixgbe_mac_82599EB) |
3816 | pci_wake_from_d3(pdev, true); | |
3817 | else | |
3818 | pci_wake_from_d3(pdev, false); | |
b3c8b4ba | 3819 | |
9d8d05ae RW |
3820 | *enable_wake = !!wufc; |
3821 | ||
b3c8b4ba AD |
3822 | ixgbe_release_hw_control(adapter); |
3823 | ||
3824 | pci_disable_device(pdev); | |
3825 | ||
9d8d05ae RW |
3826 | return 0; |
3827 | } | |
3828 | ||
3829 | #ifdef CONFIG_PM | |
3830 | static int ixgbe_suspend(struct pci_dev *pdev, pm_message_t state) | |
3831 | { | |
3832 | int retval; | |
3833 | bool wake; | |
3834 | ||
3835 | retval = __ixgbe_shutdown(pdev, &wake); | |
3836 | if (retval) | |
3837 | return retval; | |
3838 | ||
3839 | if (wake) { | |
3840 | pci_prepare_to_sleep(pdev); | |
3841 | } else { | |
3842 | pci_wake_from_d3(pdev, false); | |
3843 | pci_set_power_state(pdev, PCI_D3hot); | |
3844 | } | |
b3c8b4ba AD |
3845 | |
3846 | return 0; | |
3847 | } | |
9d8d05ae | 3848 | #endif /* CONFIG_PM */ |
b3c8b4ba AD |
3849 | |
3850 | static void ixgbe_shutdown(struct pci_dev *pdev) | |
3851 | { | |
9d8d05ae RW |
3852 | bool wake; |
3853 | ||
3854 | __ixgbe_shutdown(pdev, &wake); | |
3855 | ||
3856 | if (system_state == SYSTEM_POWER_OFF) { | |
3857 | pci_wake_from_d3(pdev, wake); | |
3858 | pci_set_power_state(pdev, PCI_D3hot); | |
3859 | } | |
b3c8b4ba AD |
3860 | } |
3861 | ||
9a799d71 AK |
3862 | /** |
3863 | * ixgbe_update_stats - Update the board statistics counters. | |
3864 | * @adapter: board private structure | |
3865 | **/ | |
3866 | void ixgbe_update_stats(struct ixgbe_adapter *adapter) | |
3867 | { | |
3868 | struct ixgbe_hw *hw = &adapter->hw; | |
6f11eef7 AV |
3869 | u64 total_mpc = 0; |
3870 | u32 i, missed_rx = 0, mpc, bprc, lxon, lxoff, xon_off_tot; | |
9a799d71 | 3871 | |
d51019a4 | 3872 | if (hw->mac.type == ixgbe_mac_82599EB) { |
f8212f97 | 3873 | u64 rsc_count = 0; |
d51019a4 PW |
3874 | for (i = 0; i < 16; i++) |
3875 | adapter->hw_rx_no_dma_resources += | |
3876 | IXGBE_READ_REG(hw, IXGBE_QPRDC(i)); | |
f8212f97 AD |
3877 | for (i = 0; i < adapter->num_rx_queues; i++) |
3878 | rsc_count += adapter->rx_ring[i].rsc_count; | |
3879 | adapter->rsc_count = rsc_count; | |
d51019a4 PW |
3880 | } |
3881 | ||
9a799d71 | 3882 | adapter->stats.crcerrs += IXGBE_READ_REG(hw, IXGBE_CRCERRS); |
6f11eef7 AV |
3883 | for (i = 0; i < 8; i++) { |
3884 | /* for packet buffers not used, the register should read 0 */ | |
3885 | mpc = IXGBE_READ_REG(hw, IXGBE_MPC(i)); | |
3886 | missed_rx += mpc; | |
3887 | adapter->stats.mpc[i] += mpc; | |
3888 | total_mpc += adapter->stats.mpc[i]; | |
e8e26350 PW |
3889 | if (hw->mac.type == ixgbe_mac_82598EB) |
3890 | adapter->stats.rnbc[i] += IXGBE_READ_REG(hw, IXGBE_RNBC(i)); | |
2f90b865 AD |
3891 | adapter->stats.qptc[i] += IXGBE_READ_REG(hw, IXGBE_QPTC(i)); |
3892 | adapter->stats.qbtc[i] += IXGBE_READ_REG(hw, IXGBE_QBTC(i)); | |
3893 | adapter->stats.qprc[i] += IXGBE_READ_REG(hw, IXGBE_QPRC(i)); | |
3894 | adapter->stats.qbrc[i] += IXGBE_READ_REG(hw, IXGBE_QBRC(i)); | |
e8e26350 PW |
3895 | if (hw->mac.type == ixgbe_mac_82599EB) { |
3896 | adapter->stats.pxonrxc[i] += IXGBE_READ_REG(hw, | |
3897 | IXGBE_PXONRXCNT(i)); | |
3898 | adapter->stats.pxoffrxc[i] += IXGBE_READ_REG(hw, | |
3899 | IXGBE_PXOFFRXCNT(i)); | |
3900 | adapter->stats.qprdc[i] += IXGBE_READ_REG(hw, IXGBE_QPRDC(i)); | |
e8e26350 PW |
3901 | } else { |
3902 | adapter->stats.pxonrxc[i] += IXGBE_READ_REG(hw, | |
3903 | IXGBE_PXONRXC(i)); | |
3904 | adapter->stats.pxoffrxc[i] += IXGBE_READ_REG(hw, | |
3905 | IXGBE_PXOFFRXC(i)); | |
3906 | } | |
2f90b865 AD |
3907 | adapter->stats.pxontxc[i] += IXGBE_READ_REG(hw, |
3908 | IXGBE_PXONTXC(i)); | |
2f90b865 | 3909 | adapter->stats.pxofftxc[i] += IXGBE_READ_REG(hw, |
e8e26350 | 3910 | IXGBE_PXOFFTXC(i)); |
6f11eef7 AV |
3911 | } |
3912 | adapter->stats.gprc += IXGBE_READ_REG(hw, IXGBE_GPRC); | |
3913 | /* work around hardware counting issue */ | |
3914 | adapter->stats.gprc -= missed_rx; | |
3915 | ||
3916 | /* 82598 hardware only has a 32 bit counter in the high register */ | |
e8e26350 PW |
3917 | if (hw->mac.type == ixgbe_mac_82599EB) { |
3918 | adapter->stats.gorc += IXGBE_READ_REG(hw, IXGBE_GORCL); | |
3919 | IXGBE_READ_REG(hw, IXGBE_GORCH); /* to clear */ | |
3920 | adapter->stats.gotc += IXGBE_READ_REG(hw, IXGBE_GOTCL); | |
3921 | IXGBE_READ_REG(hw, IXGBE_GOTCH); /* to clear */ | |
3922 | adapter->stats.tor += IXGBE_READ_REG(hw, IXGBE_TORL); | |
3923 | IXGBE_READ_REG(hw, IXGBE_TORH); /* to clear */ | |
3924 | adapter->stats.lxonrxc += IXGBE_READ_REG(hw, IXGBE_LXONRXCNT); | |
3925 | adapter->stats.lxoffrxc += IXGBE_READ_REG(hw, IXGBE_LXOFFRXCNT); | |
3926 | } else { | |
3927 | adapter->stats.lxonrxc += IXGBE_READ_REG(hw, IXGBE_LXONRXC); | |
3928 | adapter->stats.lxoffrxc += IXGBE_READ_REG(hw, IXGBE_LXOFFRXC); | |
3929 | adapter->stats.gorc += IXGBE_READ_REG(hw, IXGBE_GORCH); | |
3930 | adapter->stats.gotc += IXGBE_READ_REG(hw, IXGBE_GOTCH); | |
3931 | adapter->stats.tor += IXGBE_READ_REG(hw, IXGBE_TORH); | |
3932 | } | |
9a799d71 AK |
3933 | bprc = IXGBE_READ_REG(hw, IXGBE_BPRC); |
3934 | adapter->stats.bprc += bprc; | |
3935 | adapter->stats.mprc += IXGBE_READ_REG(hw, IXGBE_MPRC); | |
e8e26350 PW |
3936 | if (hw->mac.type == ixgbe_mac_82598EB) |
3937 | adapter->stats.mprc -= bprc; | |
9a799d71 AK |
3938 | adapter->stats.roc += IXGBE_READ_REG(hw, IXGBE_ROC); |
3939 | adapter->stats.prc64 += IXGBE_READ_REG(hw, IXGBE_PRC64); | |
3940 | adapter->stats.prc127 += IXGBE_READ_REG(hw, IXGBE_PRC127); | |
3941 | adapter->stats.prc255 += IXGBE_READ_REG(hw, IXGBE_PRC255); | |
3942 | adapter->stats.prc511 += IXGBE_READ_REG(hw, IXGBE_PRC511); | |
3943 | adapter->stats.prc1023 += IXGBE_READ_REG(hw, IXGBE_PRC1023); | |
3944 | adapter->stats.prc1522 += IXGBE_READ_REG(hw, IXGBE_PRC1522); | |
9a799d71 | 3945 | adapter->stats.rlec += IXGBE_READ_REG(hw, IXGBE_RLEC); |
6f11eef7 AV |
3946 | lxon = IXGBE_READ_REG(hw, IXGBE_LXONTXC); |
3947 | adapter->stats.lxontxc += lxon; | |
3948 | lxoff = IXGBE_READ_REG(hw, IXGBE_LXOFFTXC); | |
3949 | adapter->stats.lxofftxc += lxoff; | |
9a799d71 AK |
3950 | adapter->stats.ruc += IXGBE_READ_REG(hw, IXGBE_RUC); |
3951 | adapter->stats.gptc += IXGBE_READ_REG(hw, IXGBE_GPTC); | |
6f11eef7 AV |
3952 | adapter->stats.mptc += IXGBE_READ_REG(hw, IXGBE_MPTC); |
3953 | /* | |
3954 | * 82598 errata - tx of flow control packets is included in tx counters | |
3955 | */ | |
3956 | xon_off_tot = lxon + lxoff; | |
3957 | adapter->stats.gptc -= xon_off_tot; | |
3958 | adapter->stats.mptc -= xon_off_tot; | |
3959 | adapter->stats.gotc -= (xon_off_tot * (ETH_ZLEN + ETH_FCS_LEN)); | |
9a799d71 AK |
3960 | adapter->stats.ruc += IXGBE_READ_REG(hw, IXGBE_RUC); |
3961 | adapter->stats.rfc += IXGBE_READ_REG(hw, IXGBE_RFC); | |
3962 | adapter->stats.rjc += IXGBE_READ_REG(hw, IXGBE_RJC); | |
9a799d71 AK |
3963 | adapter->stats.tpr += IXGBE_READ_REG(hw, IXGBE_TPR); |
3964 | adapter->stats.ptc64 += IXGBE_READ_REG(hw, IXGBE_PTC64); | |
6f11eef7 | 3965 | adapter->stats.ptc64 -= xon_off_tot; |
9a799d71 AK |
3966 | adapter->stats.ptc127 += IXGBE_READ_REG(hw, IXGBE_PTC127); |
3967 | adapter->stats.ptc255 += IXGBE_READ_REG(hw, IXGBE_PTC255); | |
3968 | adapter->stats.ptc511 += IXGBE_READ_REG(hw, IXGBE_PTC511); | |
3969 | adapter->stats.ptc1023 += IXGBE_READ_REG(hw, IXGBE_PTC1023); | |
3970 | adapter->stats.ptc1522 += IXGBE_READ_REG(hw, IXGBE_PTC1522); | |
9a799d71 AK |
3971 | adapter->stats.bptc += IXGBE_READ_REG(hw, IXGBE_BPTC); |
3972 | ||
3973 | /* Fill out the OS statistics structure */ | |
9a799d71 AK |
3974 | adapter->net_stats.multicast = adapter->stats.mprc; |
3975 | ||
3976 | /* Rx Errors */ | |
3977 | adapter->net_stats.rx_errors = adapter->stats.crcerrs + | |
b4617240 | 3978 | adapter->stats.rlec; |
9a799d71 AK |
3979 | adapter->net_stats.rx_dropped = 0; |
3980 | adapter->net_stats.rx_length_errors = adapter->stats.rlec; | |
3981 | adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs; | |
6f11eef7 | 3982 | adapter->net_stats.rx_missed_errors = total_mpc; |
9a799d71 AK |
3983 | } |
3984 | ||
3985 | /** | |
3986 | * ixgbe_watchdog - Timer Call-back | |
3987 | * @data: pointer to adapter cast into an unsigned long | |
3988 | **/ | |
3989 | static void ixgbe_watchdog(unsigned long data) | |
3990 | { | |
3991 | struct ixgbe_adapter *adapter = (struct ixgbe_adapter *)data; | |
cf8280ee JB |
3992 | struct ixgbe_hw *hw = &adapter->hw; |
3993 | ||
3994 | /* Do the watchdog outside of interrupt context due to the lovely | |
3995 | * delays that some of the newer hardware requires */ | |
3996 | if (!test_bit(__IXGBE_DOWN, &adapter->state)) { | |
22d5a71b JB |
3997 | u64 eics = 0; |
3998 | int i; | |
3999 | ||
4000 | for (i = 0; i < adapter->num_msix_vectors - NON_Q_VECTORS; i++) | |
4001 | eics |= (1 << i); | |
4002 | ||
cf8280ee | 4003 | /* Cause software interrupt to ensure rx rings are cleaned */ |
22d5a71b JB |
4004 | switch (hw->mac.type) { |
4005 | case ixgbe_mac_82598EB: | |
4006 | if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) { | |
4007 | IXGBE_WRITE_REG(hw, IXGBE_EICS, (u32)eics); | |
4008 | } else { | |
4009 | /* | |
4010 | * for legacy and MSI interrupts don't set any | |
4011 | * bits that are enabled for EIAM, because this | |
4012 | * operation would set *both* EIMS and EICS for | |
4013 | * any bit in EIAM | |
4014 | */ | |
4015 | IXGBE_WRITE_REG(hw, IXGBE_EICS, | |
4016 | (IXGBE_EICS_TCP_TIMER | IXGBE_EICS_OTHER)); | |
4017 | } | |
4018 | break; | |
4019 | case ixgbe_mac_82599EB: | |
4020 | if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) { | |
835462fc NS |
4021 | IXGBE_WRITE_REG(hw, IXGBE_EICS_EX(0), |
4022 | (u32)(eics & 0xFFFFFFFF)); | |
22d5a71b | 4023 | IXGBE_WRITE_REG(hw, IXGBE_EICS_EX(1), |
22d5a71b JB |
4024 | (u32)(eics >> 32)); |
4025 | } else { | |
4026 | /* | |
4027 | * for legacy and MSI interrupts don't set any | |
4028 | * bits that are enabled for EIAM, because this | |
4029 | * operation would set *both* EIMS and EICS for | |
4030 | * any bit in EIAM | |
4031 | */ | |
4032 | IXGBE_WRITE_REG(hw, IXGBE_EICS, | |
4033 | (IXGBE_EICS_TCP_TIMER | IXGBE_EICS_OTHER)); | |
4034 | } | |
4035 | break; | |
4036 | default: | |
4037 | break; | |
cf8280ee JB |
4038 | } |
4039 | /* Reset the timer */ | |
4040 | mod_timer(&adapter->watchdog_timer, | |
4041 | round_jiffies(jiffies + 2 * HZ)); | |
4042 | } | |
9a799d71 | 4043 | |
cf8280ee JB |
4044 | schedule_work(&adapter->watchdog_task); |
4045 | } | |
4046 | ||
e8e26350 PW |
4047 | /** |
4048 | * ixgbe_multispeed_fiber_task - worker thread to configure multispeed fiber | |
4049 | * @work: pointer to work_struct containing our data | |
4050 | **/ | |
4051 | static void ixgbe_multispeed_fiber_task(struct work_struct *work) | |
4052 | { | |
4053 | struct ixgbe_adapter *adapter = container_of(work, | |
4054 | struct ixgbe_adapter, | |
4055 | multispeed_fiber_task); | |
4056 | struct ixgbe_hw *hw = &adapter->hw; | |
4057 | u32 autoneg; | |
4058 | ||
4059 | adapter->flags |= IXGBE_FLAG_IN_SFP_LINK_TASK; | |
4060 | if (hw->mac.ops.get_link_capabilities) | |
4061 | hw->mac.ops.get_link_capabilities(hw, &autoneg, | |
4062 | &hw->mac.autoneg); | |
4063 | if (hw->mac.ops.setup_link_speed) | |
4064 | hw->mac.ops.setup_link_speed(hw, autoneg, true, true); | |
4065 | adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE; | |
4066 | adapter->flags &= ~IXGBE_FLAG_IN_SFP_LINK_TASK; | |
4067 | } | |
4068 | ||
4069 | /** | |
4070 | * ixgbe_sfp_config_module_task - worker thread to configure a new SFP+ module | |
4071 | * @work: pointer to work_struct containing our data | |
4072 | **/ | |
4073 | static void ixgbe_sfp_config_module_task(struct work_struct *work) | |
4074 | { | |
4075 | struct ixgbe_adapter *adapter = container_of(work, | |
4076 | struct ixgbe_adapter, | |
4077 | sfp_config_module_task); | |
4078 | struct ixgbe_hw *hw = &adapter->hw; | |
4079 | u32 err; | |
4080 | ||
4081 | adapter->flags |= IXGBE_FLAG_IN_SFP_MOD_TASK; | |
4082 | err = hw->phy.ops.identify_sfp(hw); | |
4083 | if (err == IXGBE_ERR_SFP_NOT_SUPPORTED) { | |
4084 | DPRINTK(PROBE, ERR, "PHY not supported on this NIC %d\n", err); | |
4085 | ixgbe_down(adapter); | |
4086 | return; | |
4087 | } | |
4088 | hw->mac.ops.setup_sfp(hw); | |
4089 | ||
8d1c3c07 | 4090 | if (!(adapter->flags & IXGBE_FLAG_IN_SFP_LINK_TASK)) |
e8e26350 PW |
4091 | /* This will also work for DA Twinax connections */ |
4092 | schedule_work(&adapter->multispeed_fiber_task); | |
4093 | adapter->flags &= ~IXGBE_FLAG_IN_SFP_MOD_TASK; | |
4094 | } | |
4095 | ||
cf8280ee | 4096 | /** |
69888674 AD |
4097 | * ixgbe_watchdog_task - worker thread to bring link up |
4098 | * @work: pointer to work_struct containing our data | |
cf8280ee JB |
4099 | **/ |
4100 | static void ixgbe_watchdog_task(struct work_struct *work) | |
4101 | { | |
4102 | struct ixgbe_adapter *adapter = container_of(work, | |
4103 | struct ixgbe_adapter, | |
4104 | watchdog_task); | |
4105 | struct net_device *netdev = adapter->netdev; | |
4106 | struct ixgbe_hw *hw = &adapter->hw; | |
4107 | u32 link_speed = adapter->link_speed; | |
4108 | bool link_up = adapter->link_up; | |
bc59fcda NS |
4109 | int i; |
4110 | struct ixgbe_ring *tx_ring; | |
4111 | int some_tx_pending = 0; | |
cf8280ee JB |
4112 | |
4113 | adapter->flags |= IXGBE_FLAG_IN_WATCHDOG_TASK; | |
4114 | ||
4115 | if (adapter->flags & IXGBE_FLAG_NEED_LINK_UPDATE) { | |
4116 | hw->mac.ops.check_link(hw, &link_speed, &link_up, false); | |
4117 | if (link_up || | |
4118 | time_after(jiffies, (adapter->link_check_timeout + | |
4119 | IXGBE_TRY_LINK_TIMEOUT))) { | |
4120 | IXGBE_WRITE_REG(hw, IXGBE_EIMS, IXGBE_EIMC_LSC); | |
4121 | adapter->flags &= ~IXGBE_FLAG_NEED_LINK_UPDATE; | |
4122 | } | |
4123 | adapter->link_up = link_up; | |
4124 | adapter->link_speed = link_speed; | |
4125 | } | |
9a799d71 AK |
4126 | |
4127 | if (link_up) { | |
4128 | if (!netif_carrier_ok(netdev)) { | |
e8e26350 PW |
4129 | bool flow_rx, flow_tx; |
4130 | ||
4131 | if (hw->mac.type == ixgbe_mac_82599EB) { | |
4132 | u32 mflcn = IXGBE_READ_REG(hw, IXGBE_MFLCN); | |
4133 | u32 fccfg = IXGBE_READ_REG(hw, IXGBE_FCCFG); | |
4134 | flow_rx = (mflcn & IXGBE_MFLCN_RFCE); | |
4135 | flow_tx = (fccfg & IXGBE_FCCFG_TFCE_802_3X); | |
4136 | } else { | |
4137 | u32 frctl = IXGBE_READ_REG(hw, IXGBE_FCTRL); | |
4138 | u32 rmcs = IXGBE_READ_REG(hw, IXGBE_RMCS); | |
4139 | flow_rx = (frctl & IXGBE_FCTRL_RFCE); | |
4140 | flow_tx = (rmcs & IXGBE_RMCS_TFCE_802_3X); | |
4141 | } | |
4142 | ||
a46e534b JK |
4143 | printk(KERN_INFO "ixgbe: %s NIC Link is Up %s, " |
4144 | "Flow Control: %s\n", | |
4145 | netdev->name, | |
4146 | (link_speed == IXGBE_LINK_SPEED_10GB_FULL ? | |
4147 | "10 Gbps" : | |
4148 | (link_speed == IXGBE_LINK_SPEED_1GB_FULL ? | |
4149 | "1 Gbps" : "unknown speed")), | |
e8e26350 PW |
4150 | ((flow_rx && flow_tx) ? "RX/TX" : |
4151 | (flow_rx ? "RX" : | |
4152 | (flow_tx ? "TX" : "None")))); | |
9a799d71 AK |
4153 | |
4154 | netif_carrier_on(netdev); | |
9a799d71 AK |
4155 | } else { |
4156 | /* Force detection of hung controller */ | |
4157 | adapter->detect_tx_hung = true; | |
4158 | } | |
4159 | } else { | |
cf8280ee JB |
4160 | adapter->link_up = false; |
4161 | adapter->link_speed = 0; | |
9a799d71 | 4162 | if (netif_carrier_ok(netdev)) { |
a46e534b JK |
4163 | printk(KERN_INFO "ixgbe: %s NIC Link is Down\n", |
4164 | netdev->name); | |
9a799d71 | 4165 | netif_carrier_off(netdev); |
9a799d71 AK |
4166 | } |
4167 | } | |
4168 | ||
bc59fcda NS |
4169 | if (!netif_carrier_ok(netdev)) { |
4170 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
4171 | tx_ring = &adapter->tx_ring[i]; | |
4172 | if (tx_ring->next_to_use != tx_ring->next_to_clean) { | |
4173 | some_tx_pending = 1; | |
4174 | break; | |
4175 | } | |
4176 | } | |
4177 | ||
4178 | if (some_tx_pending) { | |
4179 | /* We've lost link, so the controller stops DMA, | |
4180 | * but we've got queued Tx work that's never going | |
4181 | * to get done, so reset controller to flush Tx. | |
4182 | * (Do the reset outside of interrupt context). | |
4183 | */ | |
4184 | schedule_work(&adapter->reset_task); | |
4185 | } | |
4186 | } | |
4187 | ||
9a799d71 | 4188 | ixgbe_update_stats(adapter); |
cf8280ee | 4189 | adapter->flags &= ~IXGBE_FLAG_IN_WATCHDOG_TASK; |
9a799d71 AK |
4190 | } |
4191 | ||
9a799d71 | 4192 | static int ixgbe_tso(struct ixgbe_adapter *adapter, |
b4617240 PW |
4193 | struct ixgbe_ring *tx_ring, struct sk_buff *skb, |
4194 | u32 tx_flags, u8 *hdr_len) | |
9a799d71 AK |
4195 | { |
4196 | struct ixgbe_adv_tx_context_desc *context_desc; | |
4197 | unsigned int i; | |
4198 | int err; | |
4199 | struct ixgbe_tx_buffer *tx_buffer_info; | |
9f8cdf4f JB |
4200 | u32 vlan_macip_lens = 0, type_tucmd_mlhl; |
4201 | u32 mss_l4len_idx, l4len; | |
9a799d71 AK |
4202 | |
4203 | if (skb_is_gso(skb)) { | |
4204 | if (skb_header_cloned(skb)) { | |
4205 | err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); | |
4206 | if (err) | |
4207 | return err; | |
4208 | } | |
4209 | l4len = tcp_hdrlen(skb); | |
4210 | *hdr_len += l4len; | |
4211 | ||
8327d000 | 4212 | if (skb->protocol == htons(ETH_P_IP)) { |
9a799d71 AK |
4213 | struct iphdr *iph = ip_hdr(skb); |
4214 | iph->tot_len = 0; | |
4215 | iph->check = 0; | |
4216 | tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, | |
b4617240 PW |
4217 | iph->daddr, 0, |
4218 | IPPROTO_TCP, | |
4219 | 0); | |
9a799d71 AK |
4220 | adapter->hw_tso_ctxt++; |
4221 | } else if (skb_shinfo(skb)->gso_type == SKB_GSO_TCPV6) { | |
4222 | ipv6_hdr(skb)->payload_len = 0; | |
4223 | tcp_hdr(skb)->check = | |
4224 | ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, | |
b4617240 PW |
4225 | &ipv6_hdr(skb)->daddr, |
4226 | 0, IPPROTO_TCP, 0); | |
9a799d71 AK |
4227 | adapter->hw_tso6_ctxt++; |
4228 | } | |
4229 | ||
4230 | i = tx_ring->next_to_use; | |
4231 | ||
4232 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; | |
4233 | context_desc = IXGBE_TX_CTXTDESC_ADV(*tx_ring, i); | |
4234 | ||
4235 | /* VLAN MACLEN IPLEN */ | |
4236 | if (tx_flags & IXGBE_TX_FLAGS_VLAN) | |
4237 | vlan_macip_lens |= | |
4238 | (tx_flags & IXGBE_TX_FLAGS_VLAN_MASK); | |
4239 | vlan_macip_lens |= ((skb_network_offset(skb)) << | |
b4617240 | 4240 | IXGBE_ADVTXD_MACLEN_SHIFT); |
9a799d71 AK |
4241 | *hdr_len += skb_network_offset(skb); |
4242 | vlan_macip_lens |= | |
4243 | (skb_transport_header(skb) - skb_network_header(skb)); | |
4244 | *hdr_len += | |
4245 | (skb_transport_header(skb) - skb_network_header(skb)); | |
4246 | context_desc->vlan_macip_lens = cpu_to_le32(vlan_macip_lens); | |
4247 | context_desc->seqnum_seed = 0; | |
4248 | ||
4249 | /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */ | |
9f8cdf4f | 4250 | type_tucmd_mlhl = (IXGBE_TXD_CMD_DEXT | |
b4617240 | 4251 | IXGBE_ADVTXD_DTYP_CTXT); |
9a799d71 | 4252 | |
8327d000 | 4253 | if (skb->protocol == htons(ETH_P_IP)) |
9a799d71 AK |
4254 | type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_IPV4; |
4255 | type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_L4T_TCP; | |
4256 | context_desc->type_tucmd_mlhl = cpu_to_le32(type_tucmd_mlhl); | |
4257 | ||
4258 | /* MSS L4LEN IDX */ | |
9f8cdf4f | 4259 | mss_l4len_idx = |
9a799d71 AK |
4260 | (skb_shinfo(skb)->gso_size << IXGBE_ADVTXD_MSS_SHIFT); |
4261 | mss_l4len_idx |= (l4len << IXGBE_ADVTXD_L4LEN_SHIFT); | |
4eeae6fd PW |
4262 | /* use index 1 for TSO */ |
4263 | mss_l4len_idx |= (1 << IXGBE_ADVTXD_IDX_SHIFT); | |
9a799d71 AK |
4264 | context_desc->mss_l4len_idx = cpu_to_le32(mss_l4len_idx); |
4265 | ||
4266 | tx_buffer_info->time_stamp = jiffies; | |
4267 | tx_buffer_info->next_to_watch = i; | |
4268 | ||
4269 | i++; | |
4270 | if (i == tx_ring->count) | |
4271 | i = 0; | |
4272 | tx_ring->next_to_use = i; | |
4273 | ||
4274 | return true; | |
4275 | } | |
4276 | return false; | |
4277 | } | |
4278 | ||
4279 | static bool ixgbe_tx_csum(struct ixgbe_adapter *adapter, | |
b4617240 PW |
4280 | struct ixgbe_ring *tx_ring, |
4281 | struct sk_buff *skb, u32 tx_flags) | |
9a799d71 AK |
4282 | { |
4283 | struct ixgbe_adv_tx_context_desc *context_desc; | |
4284 | unsigned int i; | |
4285 | struct ixgbe_tx_buffer *tx_buffer_info; | |
4286 | u32 vlan_macip_lens = 0, type_tucmd_mlhl = 0; | |
4287 | ||
4288 | if (skb->ip_summed == CHECKSUM_PARTIAL || | |
4289 | (tx_flags & IXGBE_TX_FLAGS_VLAN)) { | |
4290 | i = tx_ring->next_to_use; | |
4291 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; | |
4292 | context_desc = IXGBE_TX_CTXTDESC_ADV(*tx_ring, i); | |
4293 | ||
4294 | if (tx_flags & IXGBE_TX_FLAGS_VLAN) | |
4295 | vlan_macip_lens |= | |
4296 | (tx_flags & IXGBE_TX_FLAGS_VLAN_MASK); | |
4297 | vlan_macip_lens |= (skb_network_offset(skb) << | |
b4617240 | 4298 | IXGBE_ADVTXD_MACLEN_SHIFT); |
9a799d71 AK |
4299 | if (skb->ip_summed == CHECKSUM_PARTIAL) |
4300 | vlan_macip_lens |= (skb_transport_header(skb) - | |
b4617240 | 4301 | skb_network_header(skb)); |
9a799d71 AK |
4302 | |
4303 | context_desc->vlan_macip_lens = cpu_to_le32(vlan_macip_lens); | |
4304 | context_desc->seqnum_seed = 0; | |
4305 | ||
4306 | type_tucmd_mlhl |= (IXGBE_TXD_CMD_DEXT | | |
b4617240 | 4307 | IXGBE_ADVTXD_DTYP_CTXT); |
9a799d71 AK |
4308 | |
4309 | if (skb->ip_summed == CHECKSUM_PARTIAL) { | |
41825d71 | 4310 | switch (skb->protocol) { |
09640e63 | 4311 | case cpu_to_be16(ETH_P_IP): |
9a799d71 | 4312 | type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_IPV4; |
41825d71 AK |
4313 | if (ip_hdr(skb)->protocol == IPPROTO_TCP) |
4314 | type_tucmd_mlhl |= | |
b4617240 | 4315 | IXGBE_ADVTXD_TUCMD_L4T_TCP; |
45a5ead0 JB |
4316 | else if (ip_hdr(skb)->protocol == IPPROTO_SCTP) |
4317 | type_tucmd_mlhl |= | |
4318 | IXGBE_ADVTXD_TUCMD_L4T_SCTP; | |
41825d71 | 4319 | break; |
09640e63 | 4320 | case cpu_to_be16(ETH_P_IPV6): |
41825d71 AK |
4321 | /* XXX what about other V6 headers?? */ |
4322 | if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP) | |
4323 | type_tucmd_mlhl |= | |
b4617240 | 4324 | IXGBE_ADVTXD_TUCMD_L4T_TCP; |
45a5ead0 JB |
4325 | else if (ipv6_hdr(skb)->nexthdr == IPPROTO_SCTP) |
4326 | type_tucmd_mlhl |= | |
4327 | IXGBE_ADVTXD_TUCMD_L4T_SCTP; | |
41825d71 | 4328 | break; |
41825d71 AK |
4329 | default: |
4330 | if (unlikely(net_ratelimit())) { | |
4331 | DPRINTK(PROBE, WARNING, | |
4332 | "partial checksum but proto=%x!\n", | |
4333 | skb->protocol); | |
4334 | } | |
4335 | break; | |
4336 | } | |
9a799d71 AK |
4337 | } |
4338 | ||
4339 | context_desc->type_tucmd_mlhl = cpu_to_le32(type_tucmd_mlhl); | |
4eeae6fd | 4340 | /* use index zero for tx checksum offload */ |
9a799d71 AK |
4341 | context_desc->mss_l4len_idx = 0; |
4342 | ||
4343 | tx_buffer_info->time_stamp = jiffies; | |
4344 | tx_buffer_info->next_to_watch = i; | |
9f8cdf4f | 4345 | |
9a799d71 AK |
4346 | adapter->hw_csum_tx_good++; |
4347 | i++; | |
4348 | if (i == tx_ring->count) | |
4349 | i = 0; | |
4350 | tx_ring->next_to_use = i; | |
4351 | ||
4352 | return true; | |
4353 | } | |
9f8cdf4f | 4354 | |
9a799d71 AK |
4355 | return false; |
4356 | } | |
4357 | ||
4358 | static int ixgbe_tx_map(struct ixgbe_adapter *adapter, | |
b4617240 PW |
4359 | struct ixgbe_ring *tx_ring, |
4360 | struct sk_buff *skb, unsigned int first) | |
9a799d71 AK |
4361 | { |
4362 | struct ixgbe_tx_buffer *tx_buffer_info; | |
44df32c5 | 4363 | unsigned int len = skb_headlen(skb); |
9a799d71 AK |
4364 | unsigned int offset = 0, size, count = 0, i; |
4365 | unsigned int nr_frags = skb_shinfo(skb)->nr_frags; | |
4366 | unsigned int f; | |
44df32c5 | 4367 | dma_addr_t *map; |
9a799d71 AK |
4368 | |
4369 | i = tx_ring->next_to_use; | |
4370 | ||
44df32c5 AD |
4371 | if (skb_dma_map(&adapter->pdev->dev, skb, DMA_TO_DEVICE)) { |
4372 | dev_err(&adapter->pdev->dev, "TX DMA map failed\n"); | |
4373 | return 0; | |
4374 | } | |
4375 | ||
4376 | map = skb_shinfo(skb)->dma_maps; | |
4377 | ||
9a799d71 AK |
4378 | while (len) { |
4379 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; | |
4380 | size = min(len, (uint)IXGBE_MAX_DATA_PER_TXD); | |
4381 | ||
4382 | tx_buffer_info->length = size; | |
44df32c5 | 4383 | tx_buffer_info->dma = map[0] + offset; |
9a799d71 AK |
4384 | tx_buffer_info->time_stamp = jiffies; |
4385 | tx_buffer_info->next_to_watch = i; | |
4386 | ||
4387 | len -= size; | |
4388 | offset += size; | |
4389 | count++; | |
44df32c5 AD |
4390 | |
4391 | if (len) { | |
4392 | i++; | |
4393 | if (i == tx_ring->count) | |
4394 | i = 0; | |
4395 | } | |
9a799d71 AK |
4396 | } |
4397 | ||
4398 | for (f = 0; f < nr_frags; f++) { | |
4399 | struct skb_frag_struct *frag; | |
4400 | ||
4401 | frag = &skb_shinfo(skb)->frags[f]; | |
4402 | len = frag->size; | |
44df32c5 | 4403 | offset = 0; |
9a799d71 AK |
4404 | |
4405 | while (len) { | |
44df32c5 AD |
4406 | i++; |
4407 | if (i == tx_ring->count) | |
4408 | i = 0; | |
4409 | ||
9a799d71 AK |
4410 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; |
4411 | size = min(len, (uint)IXGBE_MAX_DATA_PER_TXD); | |
4412 | ||
4413 | tx_buffer_info->length = size; | |
44df32c5 | 4414 | tx_buffer_info->dma = map[f + 1] + offset; |
9a799d71 AK |
4415 | tx_buffer_info->time_stamp = jiffies; |
4416 | tx_buffer_info->next_to_watch = i; | |
4417 | ||
4418 | len -= size; | |
4419 | offset += size; | |
4420 | count++; | |
9a799d71 AK |
4421 | } |
4422 | } | |
44df32c5 | 4423 | |
9a799d71 AK |
4424 | tx_ring->tx_buffer_info[i].skb = skb; |
4425 | tx_ring->tx_buffer_info[first].next_to_watch = i; | |
4426 | ||
4427 | return count; | |
4428 | } | |
4429 | ||
4430 | static void ixgbe_tx_queue(struct ixgbe_adapter *adapter, | |
b4617240 PW |
4431 | struct ixgbe_ring *tx_ring, |
4432 | int tx_flags, int count, u32 paylen, u8 hdr_len) | |
9a799d71 AK |
4433 | { |
4434 | union ixgbe_adv_tx_desc *tx_desc = NULL; | |
4435 | struct ixgbe_tx_buffer *tx_buffer_info; | |
4436 | u32 olinfo_status = 0, cmd_type_len = 0; | |
4437 | unsigned int i; | |
4438 | u32 txd_cmd = IXGBE_TXD_CMD_EOP | IXGBE_TXD_CMD_RS | IXGBE_TXD_CMD_IFCS; | |
4439 | ||
4440 | cmd_type_len |= IXGBE_ADVTXD_DTYP_DATA; | |
4441 | ||
4442 | cmd_type_len |= IXGBE_ADVTXD_DCMD_IFCS | IXGBE_ADVTXD_DCMD_DEXT; | |
4443 | ||
4444 | if (tx_flags & IXGBE_TX_FLAGS_VLAN) | |
4445 | cmd_type_len |= IXGBE_ADVTXD_DCMD_VLE; | |
4446 | ||
4447 | if (tx_flags & IXGBE_TX_FLAGS_TSO) { | |
4448 | cmd_type_len |= IXGBE_ADVTXD_DCMD_TSE; | |
4449 | ||
4450 | olinfo_status |= IXGBE_TXD_POPTS_TXSM << | |
b4617240 | 4451 | IXGBE_ADVTXD_POPTS_SHIFT; |
9a799d71 | 4452 | |
4eeae6fd PW |
4453 | /* use index 1 context for tso */ |
4454 | olinfo_status |= (1 << IXGBE_ADVTXD_IDX_SHIFT); | |
9a799d71 AK |
4455 | if (tx_flags & IXGBE_TX_FLAGS_IPV4) |
4456 | olinfo_status |= IXGBE_TXD_POPTS_IXSM << | |
b4617240 | 4457 | IXGBE_ADVTXD_POPTS_SHIFT; |
9a799d71 AK |
4458 | |
4459 | } else if (tx_flags & IXGBE_TX_FLAGS_CSUM) | |
4460 | olinfo_status |= IXGBE_TXD_POPTS_TXSM << | |
b4617240 | 4461 | IXGBE_ADVTXD_POPTS_SHIFT; |
9a799d71 AK |
4462 | |
4463 | olinfo_status |= ((paylen - hdr_len) << IXGBE_ADVTXD_PAYLEN_SHIFT); | |
4464 | ||
4465 | i = tx_ring->next_to_use; | |
4466 | while (count--) { | |
4467 | tx_buffer_info = &tx_ring->tx_buffer_info[i]; | |
4468 | tx_desc = IXGBE_TX_DESC_ADV(*tx_ring, i); | |
4469 | tx_desc->read.buffer_addr = cpu_to_le64(tx_buffer_info->dma); | |
4470 | tx_desc->read.cmd_type_len = | |
b4617240 | 4471 | cpu_to_le32(cmd_type_len | tx_buffer_info->length); |
9a799d71 | 4472 | tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status); |
9a799d71 AK |
4473 | i++; |
4474 | if (i == tx_ring->count) | |
4475 | i = 0; | |
4476 | } | |
4477 | ||
4478 | tx_desc->read.cmd_type_len |= cpu_to_le32(txd_cmd); | |
4479 | ||
4480 | /* | |
4481 | * Force memory writes to complete before letting h/w | |
4482 | * know there are new descriptors to fetch. (Only | |
4483 | * applicable for weak-ordered memory model archs, | |
4484 | * such as IA-64). | |
4485 | */ | |
4486 | wmb(); | |
4487 | ||
4488 | tx_ring->next_to_use = i; | |
4489 | writel(i, adapter->hw.hw_addr + tx_ring->tail); | |
4490 | } | |
4491 | ||
e092be60 | 4492 | static int __ixgbe_maybe_stop_tx(struct net_device *netdev, |
b4617240 | 4493 | struct ixgbe_ring *tx_ring, int size) |
e092be60 AV |
4494 | { |
4495 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
4496 | ||
30eba97a | 4497 | netif_stop_subqueue(netdev, tx_ring->queue_index); |
e092be60 AV |
4498 | /* Herbert's original patch had: |
4499 | * smp_mb__after_netif_stop_queue(); | |
4500 | * but since that doesn't exist yet, just open code it. */ | |
4501 | smp_mb(); | |
4502 | ||
4503 | /* We need to check again in a case another CPU has just | |
4504 | * made room available. */ | |
4505 | if (likely(IXGBE_DESC_UNUSED(tx_ring) < size)) | |
4506 | return -EBUSY; | |
4507 | ||
4508 | /* A reprieve! - use start_queue because it doesn't call schedule */ | |
af72166f | 4509 | netif_start_subqueue(netdev, tx_ring->queue_index); |
e092be60 AV |
4510 | ++adapter->restart_queue; |
4511 | return 0; | |
4512 | } | |
4513 | ||
4514 | static int ixgbe_maybe_stop_tx(struct net_device *netdev, | |
b4617240 | 4515 | struct ixgbe_ring *tx_ring, int size) |
e092be60 AV |
4516 | { |
4517 | if (likely(IXGBE_DESC_UNUSED(tx_ring) >= size)) | |
4518 | return 0; | |
4519 | return __ixgbe_maybe_stop_tx(netdev, tx_ring, size); | |
4520 | } | |
4521 | ||
09a3b1f8 SH |
4522 | static u16 ixgbe_select_queue(struct net_device *dev, struct sk_buff *skb) |
4523 | { | |
4524 | struct ixgbe_adapter *adapter = netdev_priv(dev); | |
4525 | ||
4526 | if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) | |
4527 | return 0; /* All traffic should default to class 0 */ | |
4528 | ||
4529 | return skb_tx_hash(dev, skb); | |
4530 | } | |
4531 | ||
9a799d71 AK |
4532 | static int ixgbe_xmit_frame(struct sk_buff *skb, struct net_device *netdev) |
4533 | { | |
4534 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
4535 | struct ixgbe_ring *tx_ring; | |
9a799d71 AK |
4536 | unsigned int first; |
4537 | unsigned int tx_flags = 0; | |
30eba97a AV |
4538 | u8 hdr_len = 0; |
4539 | int r_idx = 0, tso; | |
9a799d71 AK |
4540 | int count = 0; |
4541 | unsigned int f; | |
9f8cdf4f | 4542 | |
95615d90 | 4543 | r_idx = skb->queue_mapping; |
30eba97a | 4544 | tx_ring = &adapter->tx_ring[r_idx]; |
9a799d71 | 4545 | |
9f8cdf4f JB |
4546 | if (adapter->vlgrp && vlan_tx_tag_present(skb)) { |
4547 | tx_flags |= vlan_tx_tag_get(skb); | |
2f90b865 AD |
4548 | if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) { |
4549 | tx_flags &= ~IXGBE_TX_FLAGS_VLAN_PRIO_MASK; | |
4550 | tx_flags |= (skb->queue_mapping << 13); | |
4551 | } | |
4552 | tx_flags <<= IXGBE_TX_FLAGS_VLAN_SHIFT; | |
4553 | tx_flags |= IXGBE_TX_FLAGS_VLAN; | |
4554 | } else if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) { | |
4555 | tx_flags |= (skb->queue_mapping << 13); | |
9f8cdf4f JB |
4556 | tx_flags <<= IXGBE_TX_FLAGS_VLAN_SHIFT; |
4557 | tx_flags |= IXGBE_TX_FLAGS_VLAN; | |
9a799d71 | 4558 | } |
9f8cdf4f JB |
4559 | /* three things can cause us to need a context descriptor */ |
4560 | if (skb_is_gso(skb) || | |
4561 | (skb->ip_summed == CHECKSUM_PARTIAL) || | |
4562 | (tx_flags & IXGBE_TX_FLAGS_VLAN)) | |
9a799d71 AK |
4563 | count++; |
4564 | ||
9f8cdf4f JB |
4565 | count += TXD_USE_COUNT(skb_headlen(skb)); |
4566 | for (f = 0; f < skb_shinfo(skb)->nr_frags; f++) | |
9a799d71 AK |
4567 | count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size); |
4568 | ||
e092be60 | 4569 | if (ixgbe_maybe_stop_tx(netdev, tx_ring, count)) { |
9a799d71 | 4570 | adapter->tx_busy++; |
9a799d71 AK |
4571 | return NETDEV_TX_BUSY; |
4572 | } | |
9a799d71 | 4573 | |
8327d000 | 4574 | if (skb->protocol == htons(ETH_P_IP)) |
9a799d71 AK |
4575 | tx_flags |= IXGBE_TX_FLAGS_IPV4; |
4576 | first = tx_ring->next_to_use; | |
4577 | tso = ixgbe_tso(adapter, tx_ring, skb, tx_flags, &hdr_len); | |
4578 | if (tso < 0) { | |
4579 | dev_kfree_skb_any(skb); | |
4580 | return NETDEV_TX_OK; | |
4581 | } | |
4582 | ||
4583 | if (tso) | |
4584 | tx_flags |= IXGBE_TX_FLAGS_TSO; | |
4585 | else if (ixgbe_tx_csum(adapter, tx_ring, skb, tx_flags) && | |
b4617240 | 4586 | (skb->ip_summed == CHECKSUM_PARTIAL)) |
9a799d71 AK |
4587 | tx_flags |= IXGBE_TX_FLAGS_CSUM; |
4588 | ||
44df32c5 | 4589 | count = ixgbe_tx_map(adapter, tx_ring, skb, first); |
9a799d71 | 4590 | |
44df32c5 AD |
4591 | if (count) { |
4592 | ixgbe_tx_queue(adapter, tx_ring, tx_flags, count, skb->len, | |
4593 | hdr_len); | |
4594 | netdev->trans_start = jiffies; | |
4595 | ixgbe_maybe_stop_tx(netdev, tx_ring, DESC_NEEDED); | |
9a799d71 | 4596 | |
44df32c5 AD |
4597 | } else { |
4598 | dev_kfree_skb_any(skb); | |
4599 | tx_ring->tx_buffer_info[first].time_stamp = 0; | |
4600 | tx_ring->next_to_use = first; | |
4601 | } | |
9a799d71 AK |
4602 | |
4603 | return NETDEV_TX_OK; | |
4604 | } | |
4605 | ||
4606 | /** | |
4607 | * ixgbe_get_stats - Get System Network Statistics | |
4608 | * @netdev: network interface device structure | |
4609 | * | |
4610 | * Returns the address of the device statistics structure. | |
4611 | * The statistics are actually updated from the timer callback. | |
4612 | **/ | |
4613 | static struct net_device_stats *ixgbe_get_stats(struct net_device *netdev) | |
4614 | { | |
4615 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
4616 | ||
4617 | /* only return the current stats */ | |
4618 | return &adapter->net_stats; | |
4619 | } | |
4620 | ||
4621 | /** | |
4622 | * ixgbe_set_mac - Change the Ethernet Address of the NIC | |
4623 | * @netdev: network interface device structure | |
4624 | * @p: pointer to an address structure | |
4625 | * | |
4626 | * Returns 0 on success, negative on failure | |
4627 | **/ | |
4628 | static int ixgbe_set_mac(struct net_device *netdev, void *p) | |
4629 | { | |
4630 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
b4617240 | 4631 | struct ixgbe_hw *hw = &adapter->hw; |
9a799d71 AK |
4632 | struct sockaddr *addr = p; |
4633 | ||
4634 | if (!is_valid_ether_addr(addr->sa_data)) | |
4635 | return -EADDRNOTAVAIL; | |
4636 | ||
4637 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
b4617240 | 4638 | memcpy(hw->mac.addr, addr->sa_data, netdev->addr_len); |
9a799d71 | 4639 | |
b4617240 | 4640 | hw->mac.ops.set_rar(hw, 0, hw->mac.addr, 0, IXGBE_RAH_AV); |
9a799d71 AK |
4641 | |
4642 | return 0; | |
4643 | } | |
4644 | ||
4645 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
4646 | /* | |
4647 | * Polling 'interrupt' - used by things like netconsole to send skbs | |
4648 | * without having to re-enable interrupts. It's not called while | |
4649 | * the interrupt routine is executing. | |
4650 | */ | |
4651 | static void ixgbe_netpoll(struct net_device *netdev) | |
4652 | { | |
4653 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
4654 | ||
4655 | disable_irq(adapter->pdev->irq); | |
4656 | adapter->flags |= IXGBE_FLAG_IN_NETPOLL; | |
4657 | ixgbe_intr(adapter->pdev->irq, netdev); | |
4658 | adapter->flags &= ~IXGBE_FLAG_IN_NETPOLL; | |
4659 | enable_irq(adapter->pdev->irq); | |
4660 | } | |
4661 | #endif | |
4662 | ||
0edc3527 SH |
4663 | static const struct net_device_ops ixgbe_netdev_ops = { |
4664 | .ndo_open = ixgbe_open, | |
4665 | .ndo_stop = ixgbe_close, | |
00829823 | 4666 | .ndo_start_xmit = ixgbe_xmit_frame, |
09a3b1f8 | 4667 | .ndo_select_queue = ixgbe_select_queue, |
0edc3527 | 4668 | .ndo_get_stats = ixgbe_get_stats, |
e90d400c | 4669 | .ndo_set_rx_mode = ixgbe_set_rx_mode, |
0edc3527 SH |
4670 | .ndo_set_multicast_list = ixgbe_set_rx_mode, |
4671 | .ndo_validate_addr = eth_validate_addr, | |
4672 | .ndo_set_mac_address = ixgbe_set_mac, | |
4673 | .ndo_change_mtu = ixgbe_change_mtu, | |
4674 | .ndo_tx_timeout = ixgbe_tx_timeout, | |
4675 | .ndo_vlan_rx_register = ixgbe_vlan_rx_register, | |
4676 | .ndo_vlan_rx_add_vid = ixgbe_vlan_rx_add_vid, | |
4677 | .ndo_vlan_rx_kill_vid = ixgbe_vlan_rx_kill_vid, | |
4678 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
4679 | .ndo_poll_controller = ixgbe_netpoll, | |
4680 | #endif | |
4681 | }; | |
4682 | ||
9a799d71 AK |
4683 | /** |
4684 | * ixgbe_probe - Device Initialization Routine | |
4685 | * @pdev: PCI device information struct | |
4686 | * @ent: entry in ixgbe_pci_tbl | |
4687 | * | |
4688 | * Returns 0 on success, negative on failure | |
4689 | * | |
4690 | * ixgbe_probe initializes an adapter identified by a pci_dev structure. | |
4691 | * The OS initialization, configuring of the adapter private structure, | |
4692 | * and a hardware reset occur. | |
4693 | **/ | |
4694 | static int __devinit ixgbe_probe(struct pci_dev *pdev, | |
b4617240 | 4695 | const struct pci_device_id *ent) |
9a799d71 AK |
4696 | { |
4697 | struct net_device *netdev; | |
4698 | struct ixgbe_adapter *adapter = NULL; | |
4699 | struct ixgbe_hw *hw; | |
4700 | const struct ixgbe_info *ii = ixgbe_info_tbl[ent->driver_data]; | |
9a799d71 AK |
4701 | static int cards_found; |
4702 | int i, err, pci_using_dac; | |
e8e26350 | 4703 | u16 pm_value = 0; |
c44ade9e | 4704 | u32 part_num, eec; |
9a799d71 AK |
4705 | |
4706 | err = pci_enable_device(pdev); | |
4707 | if (err) | |
4708 | return err; | |
4709 | ||
6a35528a YH |
4710 | if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) && |
4711 | !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64))) { | |
9a799d71 AK |
4712 | pci_using_dac = 1; |
4713 | } else { | |
284901a9 | 4714 | err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); |
9a799d71 | 4715 | if (err) { |
284901a9 | 4716 | err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); |
9a799d71 | 4717 | if (err) { |
b4617240 PW |
4718 | dev_err(&pdev->dev, "No usable DMA " |
4719 | "configuration, aborting\n"); | |
9a799d71 AK |
4720 | goto err_dma; |
4721 | } | |
4722 | } | |
4723 | pci_using_dac = 0; | |
4724 | } | |
4725 | ||
4726 | err = pci_request_regions(pdev, ixgbe_driver_name); | |
4727 | if (err) { | |
4728 | dev_err(&pdev->dev, "pci_request_regions failed 0x%x\n", err); | |
4729 | goto err_pci_reg; | |
4730 | } | |
4731 | ||
6fabd715 PWJ |
4732 | err = pci_enable_pcie_error_reporting(pdev); |
4733 | if (err) { | |
4734 | dev_err(&pdev->dev, "pci_enable_pcie_error_reporting failed " | |
4735 | "0x%x\n", err); | |
4736 | /* non-fatal, continue */ | |
4737 | } | |
4738 | ||
9a799d71 | 4739 | pci_set_master(pdev); |
fb3b27bc | 4740 | pci_save_state(pdev); |
9a799d71 | 4741 | |
30eba97a | 4742 | netdev = alloc_etherdev_mq(sizeof(struct ixgbe_adapter), MAX_TX_QUEUES); |
9a799d71 AK |
4743 | if (!netdev) { |
4744 | err = -ENOMEM; | |
4745 | goto err_alloc_etherdev; | |
4746 | } | |
4747 | ||
9a799d71 AK |
4748 | SET_NETDEV_DEV(netdev, &pdev->dev); |
4749 | ||
4750 | pci_set_drvdata(pdev, netdev); | |
4751 | adapter = netdev_priv(netdev); | |
4752 | ||
4753 | adapter->netdev = netdev; | |
4754 | adapter->pdev = pdev; | |
4755 | hw = &adapter->hw; | |
4756 | hw->back = adapter; | |
4757 | adapter->msg_enable = (1 << DEFAULT_DEBUG_LEVEL_SHIFT) - 1; | |
4758 | ||
05857980 JK |
4759 | hw->hw_addr = ioremap(pci_resource_start(pdev, 0), |
4760 | pci_resource_len(pdev, 0)); | |
9a799d71 AK |
4761 | if (!hw->hw_addr) { |
4762 | err = -EIO; | |
4763 | goto err_ioremap; | |
4764 | } | |
4765 | ||
4766 | for (i = 1; i <= 5; i++) { | |
4767 | if (pci_resource_len(pdev, i) == 0) | |
4768 | continue; | |
4769 | } | |
4770 | ||
0edc3527 | 4771 | netdev->netdev_ops = &ixgbe_netdev_ops; |
9a799d71 | 4772 | ixgbe_set_ethtool_ops(netdev); |
9a799d71 | 4773 | netdev->watchdog_timeo = 5 * HZ; |
9a799d71 AK |
4774 | strcpy(netdev->name, pci_name(pdev)); |
4775 | ||
9a799d71 AK |
4776 | adapter->bd_number = cards_found; |
4777 | ||
9a799d71 AK |
4778 | /* Setup hw api */ |
4779 | memcpy(&hw->mac.ops, ii->mac_ops, sizeof(hw->mac.ops)); | |
021230d4 | 4780 | hw->mac.type = ii->mac; |
9a799d71 | 4781 | |
c44ade9e JB |
4782 | /* EEPROM */ |
4783 | memcpy(&hw->eeprom.ops, ii->eeprom_ops, sizeof(hw->eeprom.ops)); | |
4784 | eec = IXGBE_READ_REG(hw, IXGBE_EEC); | |
4785 | /* If EEPROM is valid (bit 8 = 1), use default otherwise use bit bang */ | |
4786 | if (!(eec & (1 << 8))) | |
4787 | hw->eeprom.ops.read = &ixgbe_read_eeprom_bit_bang_generic; | |
4788 | ||
4789 | /* PHY */ | |
4790 | memcpy(&hw->phy.ops, ii->phy_ops, sizeof(hw->phy.ops)); | |
c4900be0 DS |
4791 | hw->phy.sfp_type = ixgbe_sfp_type_unknown; |
4792 | ||
4793 | /* set up this timer and work struct before calling get_invariants | |
4794 | * which might start the timer | |
4795 | */ | |
4796 | init_timer(&adapter->sfp_timer); | |
4797 | adapter->sfp_timer.function = &ixgbe_sfp_timer; | |
4798 | adapter->sfp_timer.data = (unsigned long) adapter; | |
4799 | ||
4800 | INIT_WORK(&adapter->sfp_task, ixgbe_sfp_task); | |
c44ade9e | 4801 | |
e8e26350 PW |
4802 | /* multispeed fiber has its own tasklet, called from GPI SDP1 context */ |
4803 | INIT_WORK(&adapter->multispeed_fiber_task, ixgbe_multispeed_fiber_task); | |
4804 | ||
4805 | /* a new SFP+ module arrival, called from GPI SDP2 context */ | |
4806 | INIT_WORK(&adapter->sfp_config_module_task, | |
4807 | ixgbe_sfp_config_module_task); | |
4808 | ||
9a799d71 | 4809 | err = ii->get_invariants(hw); |
c4900be0 DS |
4810 | if (err == IXGBE_ERR_SFP_NOT_PRESENT) { |
4811 | /* start a kernel thread to watch for a module to arrive */ | |
4812 | set_bit(__IXGBE_SFP_MODULE_NOT_FOUND, &adapter->state); | |
4813 | mod_timer(&adapter->sfp_timer, | |
4814 | round_jiffies(jiffies + (2 * HZ))); | |
4815 | err = 0; | |
4816 | } else if (err == IXGBE_ERR_SFP_NOT_SUPPORTED) { | |
4817 | DPRINTK(PROBE, ERR, "failed to load because an " | |
4818 | "unsupported SFP+ module type was detected.\n"); | |
9a799d71 | 4819 | goto err_hw_init; |
c4900be0 DS |
4820 | } else if (err) { |
4821 | goto err_hw_init; | |
4822 | } | |
9a799d71 AK |
4823 | |
4824 | /* setup the private structure */ | |
4825 | err = ixgbe_sw_init(adapter); | |
4826 | if (err) | |
4827 | goto err_sw_init; | |
4828 | ||
c44ade9e JB |
4829 | /* reset_hw fills in the perm_addr as well */ |
4830 | err = hw->mac.ops.reset_hw(hw); | |
04f165ef PW |
4831 | if (err == IXGBE_ERR_SFP_NOT_SUPPORTED) { |
4832 | dev_err(&adapter->pdev->dev, "failed to load because an " | |
4833 | "unsupported SFP+ module type was detected.\n"); | |
4834 | goto err_sw_init; | |
4835 | } else if (err) { | |
c44ade9e JB |
4836 | dev_err(&adapter->pdev->dev, "HW Init failed: %d\n", err); |
4837 | goto err_sw_init; | |
4838 | } | |
4839 | ||
9a799d71 | 4840 | netdev->features = NETIF_F_SG | |
b4617240 PW |
4841 | NETIF_F_IP_CSUM | |
4842 | NETIF_F_HW_VLAN_TX | | |
4843 | NETIF_F_HW_VLAN_RX | | |
4844 | NETIF_F_HW_VLAN_FILTER; | |
9a799d71 | 4845 | |
e9990a9c | 4846 | netdev->features |= NETIF_F_IPV6_CSUM; |
9a799d71 | 4847 | netdev->features |= NETIF_F_TSO; |
9a799d71 | 4848 | netdev->features |= NETIF_F_TSO6; |
78b6f4ce | 4849 | netdev->features |= NETIF_F_GRO; |
ad31c402 | 4850 | |
45a5ead0 JB |
4851 | if (adapter->hw.mac.type == ixgbe_mac_82599EB) |
4852 | netdev->features |= NETIF_F_SCTP_CSUM; | |
4853 | ||
ad31c402 JK |
4854 | netdev->vlan_features |= NETIF_F_TSO; |
4855 | netdev->vlan_features |= NETIF_F_TSO6; | |
22f32b7a | 4856 | netdev->vlan_features |= NETIF_F_IP_CSUM; |
ad31c402 JK |
4857 | netdev->vlan_features |= NETIF_F_SG; |
4858 | ||
2f90b865 AD |
4859 | if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) |
4860 | adapter->flags &= ~IXGBE_FLAG_RSS_ENABLED; | |
4861 | ||
7a6b6f51 | 4862 | #ifdef CONFIG_IXGBE_DCB |
2f90b865 AD |
4863 | netdev->dcbnl_ops = &dcbnl_ops; |
4864 | #endif | |
4865 | ||
9a799d71 AK |
4866 | if (pci_using_dac) |
4867 | netdev->features |= NETIF_F_HIGHDMA; | |
4868 | ||
f8212f97 AD |
4869 | if (adapter->flags & IXGBE_FLAG_RSC_ENABLED) |
4870 | netdev->features |= NETIF_F_LRO; | |
4871 | ||
9a799d71 | 4872 | /* make sure the EEPROM is good */ |
c44ade9e | 4873 | if (hw->eeprom.ops.validate_checksum(hw, NULL) < 0) { |
9a799d71 AK |
4874 | dev_err(&pdev->dev, "The EEPROM Checksum Is Not Valid\n"); |
4875 | err = -EIO; | |
4876 | goto err_eeprom; | |
4877 | } | |
4878 | ||
4879 | memcpy(netdev->dev_addr, hw->mac.perm_addr, netdev->addr_len); | |
4880 | memcpy(netdev->perm_addr, hw->mac.perm_addr, netdev->addr_len); | |
4881 | ||
c44ade9e JB |
4882 | if (ixgbe_validate_mac_addr(netdev->perm_addr)) { |
4883 | dev_err(&pdev->dev, "invalid MAC address\n"); | |
9a799d71 AK |
4884 | err = -EIO; |
4885 | goto err_eeprom; | |
4886 | } | |
4887 | ||
4888 | init_timer(&adapter->watchdog_timer); | |
4889 | adapter->watchdog_timer.function = &ixgbe_watchdog; | |
4890 | adapter->watchdog_timer.data = (unsigned long)adapter; | |
4891 | ||
4892 | INIT_WORK(&adapter->reset_task, ixgbe_reset_task); | |
cf8280ee | 4893 | INIT_WORK(&adapter->watchdog_task, ixgbe_watchdog_task); |
9a799d71 | 4894 | |
021230d4 AV |
4895 | err = ixgbe_init_interrupt_scheme(adapter); |
4896 | if (err) | |
4897 | goto err_sw_init; | |
9a799d71 | 4898 | |
e8e26350 PW |
4899 | switch (pdev->device) { |
4900 | case IXGBE_DEV_ID_82599_KX4: | |
4901 | #define IXGBE_PCIE_PMCSR 0x44 | |
4902 | adapter->wol = IXGBE_WUFC_MAG; | |
4903 | pci_read_config_word(pdev, IXGBE_PCIE_PMCSR, &pm_value); | |
4904 | pci_write_config_word(pdev, IXGBE_PCIE_PMCSR, | |
4905 | (pm_value | (1 << 8))); | |
4906 | break; | |
4907 | default: | |
4908 | adapter->wol = 0; | |
4909 | break; | |
4910 | } | |
4911 | device_init_wakeup(&adapter->pdev->dev, true); | |
4912 | device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol); | |
4913 | ||
04f165ef PW |
4914 | /* pick up the PCI bus settings for reporting later */ |
4915 | hw->mac.ops.get_bus_info(hw); | |
4916 | ||
9a799d71 | 4917 | /* print bus type/speed/width info */ |
7c510e4b | 4918 | dev_info(&pdev->dev, "(PCI Express:%s:%s) %pM\n", |
e8e26350 PW |
4919 | ((hw->bus.speed == ixgbe_bus_speed_5000) ? "5.0Gb/s": |
4920 | (hw->bus.speed == ixgbe_bus_speed_2500) ? "2.5Gb/s":"Unknown"), | |
4921 | ((hw->bus.width == ixgbe_bus_width_pcie_x8) ? "Width x8" : | |
4922 | (hw->bus.width == ixgbe_bus_width_pcie_x4) ? "Width x4" : | |
4923 | (hw->bus.width == ixgbe_bus_width_pcie_x1) ? "Width x1" : | |
b4617240 | 4924 | "Unknown"), |
7c510e4b | 4925 | netdev->dev_addr); |
c44ade9e | 4926 | ixgbe_read_pba_num_generic(hw, &part_num); |
e8e26350 PW |
4927 | if (ixgbe_is_sfp(hw) && hw->phy.sfp_type != ixgbe_sfp_type_not_present) |
4928 | dev_info(&pdev->dev, "MAC: %d, PHY: %d, SFP+: %d, PBA No: %06x-%03x\n", | |
4929 | hw->mac.type, hw->phy.type, hw->phy.sfp_type, | |
4930 | (part_num >> 8), (part_num & 0xff)); | |
4931 | else | |
4932 | dev_info(&pdev->dev, "MAC: %d, PHY: %d, PBA No: %06x-%03x\n", | |
4933 | hw->mac.type, hw->phy.type, | |
4934 | (part_num >> 8), (part_num & 0xff)); | |
9a799d71 | 4935 | |
e8e26350 | 4936 | if (hw->bus.width <= ixgbe_bus_width_pcie_x4) { |
0c254d86 | 4937 | dev_warn(&pdev->dev, "PCI-Express bandwidth available for " |
b4617240 PW |
4938 | "this card is not sufficient for optimal " |
4939 | "performance.\n"); | |
0c254d86 | 4940 | dev_warn(&pdev->dev, "For optimal performance a x8 " |
b4617240 | 4941 | "PCI-Express slot is required.\n"); |
0c254d86 AK |
4942 | } |
4943 | ||
34b0368c PWJ |
4944 | /* save off EEPROM version number */ |
4945 | hw->eeprom.ops.read(hw, 0x29, &adapter->eeprom_version); | |
4946 | ||
9a799d71 | 4947 | /* reset the hardware with the new settings */ |
c44ade9e JB |
4948 | hw->mac.ops.start_hw(hw); |
4949 | ||
9a799d71 AK |
4950 | strcpy(netdev->name, "eth%d"); |
4951 | err = register_netdev(netdev); | |
4952 | if (err) | |
4953 | goto err_register; | |
4954 | ||
54386467 JB |
4955 | /* carrier off reporting is important to ethtool even BEFORE open */ |
4956 | netif_carrier_off(netdev); | |
4957 | ||
5dd2d332 | 4958 | #ifdef CONFIG_IXGBE_DCA |
652f093f | 4959 | if (dca_add_requester(&pdev->dev) == 0) { |
bd0362dd JC |
4960 | adapter->flags |= IXGBE_FLAG_DCA_ENABLED; |
4961 | /* always use CB2 mode, difference is masked | |
4962 | * in the CB driver */ | |
4963 | IXGBE_WRITE_REG(hw, IXGBE_DCA_CTRL, 2); | |
4964 | ixgbe_setup_dca(adapter); | |
4965 | } | |
4966 | #endif | |
9a799d71 AK |
4967 | |
4968 | dev_info(&pdev->dev, "Intel(R) 10 Gigabit Network Connection\n"); | |
4969 | cards_found++; | |
4970 | return 0; | |
4971 | ||
4972 | err_register: | |
5eba3699 | 4973 | ixgbe_release_hw_control(adapter); |
9a799d71 AK |
4974 | err_hw_init: |
4975 | err_sw_init: | |
021230d4 | 4976 | ixgbe_reset_interrupt_capability(adapter); |
9a799d71 | 4977 | err_eeprom: |
c4900be0 DS |
4978 | clear_bit(__IXGBE_SFP_MODULE_NOT_FOUND, &adapter->state); |
4979 | del_timer_sync(&adapter->sfp_timer); | |
4980 | cancel_work_sync(&adapter->sfp_task); | |
e8e26350 PW |
4981 | cancel_work_sync(&adapter->multispeed_fiber_task); |
4982 | cancel_work_sync(&adapter->sfp_config_module_task); | |
9a799d71 AK |
4983 | iounmap(hw->hw_addr); |
4984 | err_ioremap: | |
4985 | free_netdev(netdev); | |
4986 | err_alloc_etherdev: | |
4987 | pci_release_regions(pdev); | |
4988 | err_pci_reg: | |
4989 | err_dma: | |
4990 | pci_disable_device(pdev); | |
4991 | return err; | |
4992 | } | |
4993 | ||
4994 | /** | |
4995 | * ixgbe_remove - Device Removal Routine | |
4996 | * @pdev: PCI device information struct | |
4997 | * | |
4998 | * ixgbe_remove is called by the PCI subsystem to alert the driver | |
4999 | * that it should release a PCI device. The could be caused by a | |
5000 | * Hot-Plug event, or because the driver is going to be removed from | |
5001 | * memory. | |
5002 | **/ | |
5003 | static void __devexit ixgbe_remove(struct pci_dev *pdev) | |
5004 | { | |
5005 | struct net_device *netdev = pci_get_drvdata(pdev); | |
5006 | struct ixgbe_adapter *adapter = netdev_priv(netdev); | |
6fabd715 | 5007 | int err; |
9a799d71 AK |
5008 | |
5009 | set_bit(__IXGBE_DOWN, &adapter->state); | |
c4900be0 DS |
5010 | /* clear the module not found bit to make sure the worker won't |
5011 | * reschedule | |
5012 | */ | |
5013 | clear_bit(__IXGBE_SFP_MODULE_NOT_FOUND, &adapter->state); | |
9a799d71 AK |
5014 | del_timer_sync(&adapter->watchdog_timer); |
5015 | ||
c4900be0 DS |
5016 | del_timer_sync(&adapter->sfp_timer); |
5017 | cancel_work_sync(&adapter->watchdog_task); | |
5018 | cancel_work_sync(&adapter->sfp_task); | |
e8e26350 PW |
5019 | cancel_work_sync(&adapter->multispeed_fiber_task); |
5020 | cancel_work_sync(&adapter->sfp_config_module_task); | |
9a799d71 AK |
5021 | flush_scheduled_work(); |
5022 | ||
5dd2d332 | 5023 | #ifdef CONFIG_IXGBE_DCA |
bd0362dd JC |
5024 | if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) { |
5025 | adapter->flags &= ~IXGBE_FLAG_DCA_ENABLED; | |
5026 | dca_remove_requester(&pdev->dev); | |
5027 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 1); | |
5028 | } | |
5029 | ||
5030 | #endif | |
c4900be0 DS |
5031 | if (netdev->reg_state == NETREG_REGISTERED) |
5032 | unregister_netdev(netdev); | |
9a799d71 | 5033 | |
021230d4 | 5034 | ixgbe_reset_interrupt_capability(adapter); |
5eba3699 | 5035 | |
021230d4 | 5036 | ixgbe_release_hw_control(adapter); |
9a799d71 AK |
5037 | |
5038 | iounmap(adapter->hw.hw_addr); | |
5039 | pci_release_regions(pdev); | |
5040 | ||
021230d4 AV |
5041 | DPRINTK(PROBE, INFO, "complete\n"); |
5042 | kfree(adapter->tx_ring); | |
5043 | kfree(adapter->rx_ring); | |
5044 | ||
9a799d71 AK |
5045 | free_netdev(netdev); |
5046 | ||
6fabd715 PWJ |
5047 | err = pci_disable_pcie_error_reporting(pdev); |
5048 | if (err) | |
5049 | dev_err(&pdev->dev, | |
5050 | "pci_disable_pcie_error_reporting failed 0x%x\n", err); | |
5051 | ||
9a799d71 AK |
5052 | pci_disable_device(pdev); |
5053 | } | |
5054 | ||
5055 | /** | |
5056 | * ixgbe_io_error_detected - called when PCI error is detected | |
5057 | * @pdev: Pointer to PCI device | |
5058 | * @state: The current pci connection state | |
5059 | * | |
5060 | * This function is called after a PCI bus error affecting | |
5061 | * this device has been detected. | |
5062 | */ | |
5063 | static pci_ers_result_t ixgbe_io_error_detected(struct pci_dev *pdev, | |
b4617240 | 5064 | pci_channel_state_t state) |
9a799d71 AK |
5065 | { |
5066 | struct net_device *netdev = pci_get_drvdata(pdev); | |
454d7c9b | 5067 | struct ixgbe_adapter *adapter = netdev_priv(netdev); |
9a799d71 AK |
5068 | |
5069 | netif_device_detach(netdev); | |
5070 | ||
5071 | if (netif_running(netdev)) | |
5072 | ixgbe_down(adapter); | |
5073 | pci_disable_device(pdev); | |
5074 | ||
b4617240 | 5075 | /* Request a slot reset. */ |
9a799d71 AK |
5076 | return PCI_ERS_RESULT_NEED_RESET; |
5077 | } | |
5078 | ||
5079 | /** | |
5080 | * ixgbe_io_slot_reset - called after the pci bus has been reset. | |
5081 | * @pdev: Pointer to PCI device | |
5082 | * | |
5083 | * Restart the card from scratch, as if from a cold-boot. | |
5084 | */ | |
5085 | static pci_ers_result_t ixgbe_io_slot_reset(struct pci_dev *pdev) | |
5086 | { | |
5087 | struct net_device *netdev = pci_get_drvdata(pdev); | |
454d7c9b | 5088 | struct ixgbe_adapter *adapter = netdev_priv(netdev); |
6fabd715 PWJ |
5089 | pci_ers_result_t result; |
5090 | int err; | |
9a799d71 AK |
5091 | |
5092 | if (pci_enable_device(pdev)) { | |
5093 | DPRINTK(PROBE, ERR, | |
b4617240 | 5094 | "Cannot re-enable PCI device after reset.\n"); |
6fabd715 PWJ |
5095 | result = PCI_ERS_RESULT_DISCONNECT; |
5096 | } else { | |
5097 | pci_set_master(pdev); | |
5098 | pci_restore_state(pdev); | |
9a799d71 | 5099 | |
dd4d8ca6 | 5100 | pci_wake_from_d3(pdev, false); |
9a799d71 | 5101 | |
6fabd715 | 5102 | ixgbe_reset(adapter); |
88512539 | 5103 | IXGBE_WRITE_REG(&adapter->hw, IXGBE_WUS, ~0); |
6fabd715 PWJ |
5104 | result = PCI_ERS_RESULT_RECOVERED; |
5105 | } | |
5106 | ||
5107 | err = pci_cleanup_aer_uncorrect_error_status(pdev); | |
5108 | if (err) { | |
5109 | dev_err(&pdev->dev, | |
5110 | "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n", err); | |
5111 | /* non-fatal, continue */ | |
5112 | } | |
9a799d71 | 5113 | |
6fabd715 | 5114 | return result; |
9a799d71 AK |
5115 | } |
5116 | ||
5117 | /** | |
5118 | * ixgbe_io_resume - called when traffic can start flowing again. | |
5119 | * @pdev: Pointer to PCI device | |
5120 | * | |
5121 | * This callback is called when the error recovery driver tells us that | |
5122 | * its OK to resume normal operation. | |
5123 | */ | |
5124 | static void ixgbe_io_resume(struct pci_dev *pdev) | |
5125 | { | |
5126 | struct net_device *netdev = pci_get_drvdata(pdev); | |
454d7c9b | 5127 | struct ixgbe_adapter *adapter = netdev_priv(netdev); |
9a799d71 AK |
5128 | |
5129 | if (netif_running(netdev)) { | |
5130 | if (ixgbe_up(adapter)) { | |
5131 | DPRINTK(PROBE, INFO, "ixgbe_up failed after reset\n"); | |
5132 | return; | |
5133 | } | |
5134 | } | |
5135 | ||
5136 | netif_device_attach(netdev); | |
9a799d71 AK |
5137 | } |
5138 | ||
5139 | static struct pci_error_handlers ixgbe_err_handler = { | |
5140 | .error_detected = ixgbe_io_error_detected, | |
5141 | .slot_reset = ixgbe_io_slot_reset, | |
5142 | .resume = ixgbe_io_resume, | |
5143 | }; | |
5144 | ||
5145 | static struct pci_driver ixgbe_driver = { | |
5146 | .name = ixgbe_driver_name, | |
5147 | .id_table = ixgbe_pci_tbl, | |
5148 | .probe = ixgbe_probe, | |
5149 | .remove = __devexit_p(ixgbe_remove), | |
5150 | #ifdef CONFIG_PM | |
5151 | .suspend = ixgbe_suspend, | |
5152 | .resume = ixgbe_resume, | |
5153 | #endif | |
5154 | .shutdown = ixgbe_shutdown, | |
5155 | .err_handler = &ixgbe_err_handler | |
5156 | }; | |
5157 | ||
5158 | /** | |
5159 | * ixgbe_init_module - Driver Registration Routine | |
5160 | * | |
5161 | * ixgbe_init_module is the first routine called when the driver is | |
5162 | * loaded. All it does is register with the PCI subsystem. | |
5163 | **/ | |
5164 | static int __init ixgbe_init_module(void) | |
5165 | { | |
5166 | int ret; | |
5167 | printk(KERN_INFO "%s: %s - version %s\n", ixgbe_driver_name, | |
5168 | ixgbe_driver_string, ixgbe_driver_version); | |
5169 | ||
5170 | printk(KERN_INFO "%s: %s\n", ixgbe_driver_name, ixgbe_copyright); | |
5171 | ||
5dd2d332 | 5172 | #ifdef CONFIG_IXGBE_DCA |
bd0362dd | 5173 | dca_register_notify(&dca_notifier); |
bd0362dd | 5174 | #endif |
5dd2d332 | 5175 | |
9a799d71 AK |
5176 | ret = pci_register_driver(&ixgbe_driver); |
5177 | return ret; | |
5178 | } | |
b4617240 | 5179 | |
9a799d71 AK |
5180 | module_init(ixgbe_init_module); |
5181 | ||
5182 | /** | |
5183 | * ixgbe_exit_module - Driver Exit Cleanup Routine | |
5184 | * | |
5185 | * ixgbe_exit_module is called just before the driver is removed | |
5186 | * from memory. | |
5187 | **/ | |
5188 | static void __exit ixgbe_exit_module(void) | |
5189 | { | |
5dd2d332 | 5190 | #ifdef CONFIG_IXGBE_DCA |
bd0362dd JC |
5191 | dca_unregister_notify(&dca_notifier); |
5192 | #endif | |
9a799d71 AK |
5193 | pci_unregister_driver(&ixgbe_driver); |
5194 | } | |
bd0362dd | 5195 | |
5dd2d332 | 5196 | #ifdef CONFIG_IXGBE_DCA |
bd0362dd | 5197 | static int ixgbe_notify_dca(struct notifier_block *nb, unsigned long event, |
b4617240 | 5198 | void *p) |
bd0362dd JC |
5199 | { |
5200 | int ret_val; | |
5201 | ||
5202 | ret_val = driver_for_each_device(&ixgbe_driver.driver, NULL, &event, | |
b4617240 | 5203 | __ixgbe_notify_dca); |
bd0362dd JC |
5204 | |
5205 | return ret_val ? NOTIFY_BAD : NOTIFY_DONE; | |
5206 | } | |
b453368d | 5207 | |
5dd2d332 | 5208 | #endif /* CONFIG_IXGBE_DCA */ |
b453368d AD |
5209 | #ifdef DEBUG |
5210 | /** | |
5211 | * ixgbe_get_hw_dev_name - return device name string | |
5212 | * used by hardware layer to print debugging information | |
5213 | **/ | |
5214 | char *ixgbe_get_hw_dev_name(struct ixgbe_hw *hw) | |
5215 | { | |
5216 | struct ixgbe_adapter *adapter = hw->back; | |
5217 | return adapter->netdev->name; | |
5218 | } | |
bd0362dd | 5219 | |
b453368d | 5220 | #endif |
9a799d71 AK |
5221 | module_exit(ixgbe_exit_module); |
5222 | ||
5223 | /* ixgbe_main.c */ |