Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Linux network driver for Brocade Converged Network Adapter. |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify it |
| 5 | * under the terms of the GNU General Public License (GPL) Version 2 as |
| 6 | * published by the Free Software Foundation |
| 7 | * |
| 8 | * This program is distributed in the hope that it will be useful, but |
| 9 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 11 | * General Public License for more details. |
| 12 | */ |
| 13 | /* |
| 14 | * Copyright (c) 2005-2010 Brocade Communications Systems, Inc. |
| 15 | * All rights reserved |
| 16 | * www.brocade.com |
| 17 | */ |
| 18 | #include <linux/netdevice.h> |
| 19 | #include <linux/skbuff.h> |
| 20 | #include <linux/etherdevice.h> |
| 21 | #include <linux/in.h> |
| 22 | #include <linux/ethtool.h> |
| 23 | #include <linux/if_vlan.h> |
| 24 | #include <linux/if_ether.h> |
| 25 | #include <linux/ip.h> |
Paul Gortmaker | 70c7160 | 2011-05-22 16:47:17 -0400 | [diff] [blame] | 26 | #include <linux/prefetch.h> |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 27 | |
| 28 | #include "bnad.h" |
| 29 | #include "bna.h" |
| 30 | #include "cna.h" |
| 31 | |
Rasesh Mody | b7ee31c5 | 2010-10-05 15:46:05 +0000 | [diff] [blame] | 32 | static DEFINE_MUTEX(bnad_fwimg_mutex); |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 33 | |
| 34 | /* |
| 35 | * Module params |
| 36 | */ |
| 37 | static uint bnad_msix_disable; |
| 38 | module_param(bnad_msix_disable, uint, 0444); |
| 39 | MODULE_PARM_DESC(bnad_msix_disable, "Disable MSIX mode"); |
| 40 | |
| 41 | static uint bnad_ioc_auto_recover = 1; |
| 42 | module_param(bnad_ioc_auto_recover, uint, 0444); |
| 43 | MODULE_PARM_DESC(bnad_ioc_auto_recover, "Enable / Disable auto recovery"); |
| 44 | |
| 45 | /* |
| 46 | * Global variables |
| 47 | */ |
| 48 | u32 bnad_rxqs_per_cq = 2; |
| 49 | |
Rasesh Mody | b7ee31c5 | 2010-10-05 15:46:05 +0000 | [diff] [blame] | 50 | static const u8 bnad_bcast_addr[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 51 | |
| 52 | /* |
| 53 | * Local MACROS |
| 54 | */ |
| 55 | #define BNAD_TX_UNMAPQ_DEPTH (bnad->txq_depth * 2) |
| 56 | |
| 57 | #define BNAD_RX_UNMAPQ_DEPTH (bnad->rxq_depth) |
| 58 | |
| 59 | #define BNAD_GET_MBOX_IRQ(_bnad) \ |
| 60 | (((_bnad)->cfg_flags & BNAD_CF_MSIX) ? \ |
| 61 | ((_bnad)->msix_table[(_bnad)->msix_num - 1].vector) : \ |
| 62 | ((_bnad)->pcidev->irq)) |
| 63 | |
| 64 | #define BNAD_FILL_UNMAPQ_MEM_REQ(_res_info, _num, _depth) \ |
| 65 | do { \ |
| 66 | (_res_info)->res_type = BNA_RES_T_MEM; \ |
| 67 | (_res_info)->res_u.mem_info.mem_type = BNA_MEM_T_KVA; \ |
| 68 | (_res_info)->res_u.mem_info.num = (_num); \ |
| 69 | (_res_info)->res_u.mem_info.len = \ |
| 70 | sizeof(struct bnad_unmap_q) + \ |
| 71 | (sizeof(struct bnad_skb_unmap) * ((_depth) - 1)); \ |
| 72 | } while (0) |
| 73 | |
Rasesh Mody | be7fa32 | 2010-12-23 21:45:01 +0000 | [diff] [blame] | 74 | #define BNAD_TXRX_SYNC_MDELAY 250 /* 250 msecs */ |
| 75 | |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 76 | /* |
| 77 | * Reinitialize completions in CQ, once Rx is taken down |
| 78 | */ |
| 79 | static void |
| 80 | bnad_cq_cmpl_init(struct bnad *bnad, struct bna_ccb *ccb) |
| 81 | { |
| 82 | struct bna_cq_entry *cmpl, *next_cmpl; |
| 83 | unsigned int wi_range, wis = 0, ccb_prod = 0; |
| 84 | int i; |
| 85 | |
| 86 | BNA_CQ_QPGE_PTR_GET(ccb_prod, ccb->sw_qpt, cmpl, |
| 87 | wi_range); |
| 88 | |
| 89 | for (i = 0; i < ccb->q_depth; i++) { |
| 90 | wis++; |
| 91 | if (likely(--wi_range)) |
| 92 | next_cmpl = cmpl + 1; |
| 93 | else { |
| 94 | BNA_QE_INDX_ADD(ccb_prod, wis, ccb->q_depth); |
| 95 | wis = 0; |
| 96 | BNA_CQ_QPGE_PTR_GET(ccb_prod, ccb->sw_qpt, |
| 97 | next_cmpl, wi_range); |
| 98 | } |
| 99 | cmpl->valid = 0; |
| 100 | cmpl = next_cmpl; |
| 101 | } |
| 102 | } |
| 103 | |
| 104 | /* |
| 105 | * Frees all pending Tx Bufs |
| 106 | * At this point no activity is expected on the Q, |
| 107 | * so DMA unmap & freeing is fine. |
| 108 | */ |
| 109 | static void |
| 110 | bnad_free_all_txbufs(struct bnad *bnad, |
| 111 | struct bna_tcb *tcb) |
| 112 | { |
Rasesh Mody | f7c0fa4 | 2010-12-23 21:45:05 +0000 | [diff] [blame] | 113 | u32 unmap_cons; |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 114 | struct bnad_unmap_q *unmap_q = tcb->unmap_q; |
| 115 | struct bnad_skb_unmap *unmap_array; |
| 116 | struct sk_buff *skb = NULL; |
| 117 | int i; |
| 118 | |
| 119 | unmap_array = unmap_q->unmap_array; |
| 120 | |
| 121 | unmap_cons = 0; |
| 122 | while (unmap_cons < unmap_q->q_depth) { |
| 123 | skb = unmap_array[unmap_cons].skb; |
| 124 | if (!skb) { |
| 125 | unmap_cons++; |
| 126 | continue; |
| 127 | } |
| 128 | unmap_array[unmap_cons].skb = NULL; |
| 129 | |
Ivan Vecera | 5ea7431 | 2011-02-02 04:37:02 +0000 | [diff] [blame] | 130 | dma_unmap_single(&bnad->pcidev->dev, |
| 131 | dma_unmap_addr(&unmap_array[unmap_cons], |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 132 | dma_addr), skb_headlen(skb), |
Ivan Vecera | 5ea7431 | 2011-02-02 04:37:02 +0000 | [diff] [blame] | 133 | DMA_TO_DEVICE); |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 134 | |
Ivan Vecera | 5ea7431 | 2011-02-02 04:37:02 +0000 | [diff] [blame] | 135 | dma_unmap_addr_set(&unmap_array[unmap_cons], dma_addr, 0); |
Rasesh Mody | be7fa32 | 2010-12-23 21:45:01 +0000 | [diff] [blame] | 136 | if (++unmap_cons >= unmap_q->q_depth) |
| 137 | break; |
| 138 | |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 139 | for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { |
Ivan Vecera | 5ea7431 | 2011-02-02 04:37:02 +0000 | [diff] [blame] | 140 | dma_unmap_page(&bnad->pcidev->dev, |
| 141 | dma_unmap_addr(&unmap_array[unmap_cons], |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 142 | dma_addr), |
| 143 | skb_shinfo(skb)->frags[i].size, |
Ivan Vecera | 5ea7431 | 2011-02-02 04:37:02 +0000 | [diff] [blame] | 144 | DMA_TO_DEVICE); |
| 145 | dma_unmap_addr_set(&unmap_array[unmap_cons], dma_addr, |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 146 | 0); |
Rasesh Mody | be7fa32 | 2010-12-23 21:45:01 +0000 | [diff] [blame] | 147 | if (++unmap_cons >= unmap_q->q_depth) |
| 148 | break; |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 149 | } |
| 150 | dev_kfree_skb_any(skb); |
| 151 | } |
| 152 | } |
| 153 | |
| 154 | /* Data Path Handlers */ |
| 155 | |
| 156 | /* |
| 157 | * bnad_free_txbufs : Frees the Tx bufs on Tx completion |
| 158 | * Can be called in a) Interrupt context |
| 159 | * b) Sending context |
| 160 | * c) Tasklet context |
| 161 | */ |
| 162 | static u32 |
| 163 | bnad_free_txbufs(struct bnad *bnad, |
| 164 | struct bna_tcb *tcb) |
| 165 | { |
| 166 | u32 sent_packets = 0, sent_bytes = 0; |
| 167 | u16 wis, unmap_cons, updated_hw_cons; |
| 168 | struct bnad_unmap_q *unmap_q = tcb->unmap_q; |
| 169 | struct bnad_skb_unmap *unmap_array; |
| 170 | struct sk_buff *skb; |
| 171 | int i; |
| 172 | |
| 173 | /* |
| 174 | * Just return if TX is stopped. This check is useful |
| 175 | * when bnad_free_txbufs() runs out of a tasklet scheduled |
Rasesh Mody | be7fa32 | 2010-12-23 21:45:01 +0000 | [diff] [blame] | 176 | * before bnad_cb_tx_cleanup() cleared BNAD_TXQ_TX_STARTED bit |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 177 | * but this routine runs actually after the cleanup has been |
| 178 | * executed. |
| 179 | */ |
Rasesh Mody | be7fa32 | 2010-12-23 21:45:01 +0000 | [diff] [blame] | 180 | if (!test_bit(BNAD_TXQ_TX_STARTED, &tcb->flags)) |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 181 | return 0; |
| 182 | |
| 183 | updated_hw_cons = *(tcb->hw_consumer_index); |
| 184 | |
| 185 | wis = BNA_Q_INDEX_CHANGE(tcb->consumer_index, |
| 186 | updated_hw_cons, tcb->q_depth); |
| 187 | |
| 188 | BUG_ON(!(wis <= BNA_QE_IN_USE_CNT(tcb, tcb->q_depth))); |
| 189 | |
| 190 | unmap_array = unmap_q->unmap_array; |
| 191 | unmap_cons = unmap_q->consumer_index; |
| 192 | |
| 193 | prefetch(&unmap_array[unmap_cons + 1]); |
| 194 | while (wis) { |
| 195 | skb = unmap_array[unmap_cons].skb; |
| 196 | |
| 197 | unmap_array[unmap_cons].skb = NULL; |
| 198 | |
| 199 | sent_packets++; |
| 200 | sent_bytes += skb->len; |
| 201 | wis -= BNA_TXQ_WI_NEEDED(1 + skb_shinfo(skb)->nr_frags); |
| 202 | |
Ivan Vecera | 5ea7431 | 2011-02-02 04:37:02 +0000 | [diff] [blame] | 203 | dma_unmap_single(&bnad->pcidev->dev, |
| 204 | dma_unmap_addr(&unmap_array[unmap_cons], |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 205 | dma_addr), skb_headlen(skb), |
Ivan Vecera | 5ea7431 | 2011-02-02 04:37:02 +0000 | [diff] [blame] | 206 | DMA_TO_DEVICE); |
| 207 | dma_unmap_addr_set(&unmap_array[unmap_cons], dma_addr, 0); |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 208 | BNA_QE_INDX_ADD(unmap_cons, 1, unmap_q->q_depth); |
| 209 | |
| 210 | prefetch(&unmap_array[unmap_cons + 1]); |
| 211 | for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { |
| 212 | prefetch(&unmap_array[unmap_cons + 1]); |
| 213 | |
Ivan Vecera | 5ea7431 | 2011-02-02 04:37:02 +0000 | [diff] [blame] | 214 | dma_unmap_page(&bnad->pcidev->dev, |
| 215 | dma_unmap_addr(&unmap_array[unmap_cons], |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 216 | dma_addr), |
| 217 | skb_shinfo(skb)->frags[i].size, |
Ivan Vecera | 5ea7431 | 2011-02-02 04:37:02 +0000 | [diff] [blame] | 218 | DMA_TO_DEVICE); |
| 219 | dma_unmap_addr_set(&unmap_array[unmap_cons], dma_addr, |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 220 | 0); |
| 221 | BNA_QE_INDX_ADD(unmap_cons, 1, unmap_q->q_depth); |
| 222 | } |
| 223 | dev_kfree_skb_any(skb); |
| 224 | } |
| 225 | |
| 226 | /* Update consumer pointers. */ |
| 227 | tcb->consumer_index = updated_hw_cons; |
| 228 | unmap_q->consumer_index = unmap_cons; |
| 229 | |
| 230 | tcb->txq->tx_packets += sent_packets; |
| 231 | tcb->txq->tx_bytes += sent_bytes; |
| 232 | |
| 233 | return sent_packets; |
| 234 | } |
| 235 | |
| 236 | /* Tx Free Tasklet function */ |
| 237 | /* Frees for all the tcb's in all the Tx's */ |
| 238 | /* |
| 239 | * Scheduled from sending context, so that |
| 240 | * the fat Tx lock is not held for too long |
| 241 | * in the sending context. |
| 242 | */ |
| 243 | static void |
| 244 | bnad_tx_free_tasklet(unsigned long bnad_ptr) |
| 245 | { |
| 246 | struct bnad *bnad = (struct bnad *)bnad_ptr; |
| 247 | struct bna_tcb *tcb; |
Rasesh Mody | f7c0fa4 | 2010-12-23 21:45:05 +0000 | [diff] [blame] | 248 | u32 acked = 0; |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 249 | int i, j; |
| 250 | |
| 251 | for (i = 0; i < bnad->num_tx; i++) { |
| 252 | for (j = 0; j < bnad->num_txq_per_tx; j++) { |
| 253 | tcb = bnad->tx_info[i].tcb[j]; |
| 254 | if (!tcb) |
| 255 | continue; |
| 256 | if (((u16) (*tcb->hw_consumer_index) != |
| 257 | tcb->consumer_index) && |
| 258 | (!test_and_set_bit(BNAD_TXQ_FREE_SENT, |
| 259 | &tcb->flags))) { |
| 260 | acked = bnad_free_txbufs(bnad, tcb); |
Rasesh Mody | be7fa32 | 2010-12-23 21:45:01 +0000 | [diff] [blame] | 261 | if (likely(test_bit(BNAD_TXQ_TX_STARTED, |
| 262 | &tcb->flags))) |
| 263 | bna_ib_ack(tcb->i_dbell, acked); |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 264 | smp_mb__before_clear_bit(); |
| 265 | clear_bit(BNAD_TXQ_FREE_SENT, &tcb->flags); |
| 266 | } |
Rasesh Mody | f7c0fa4 | 2010-12-23 21:45:05 +0000 | [diff] [blame] | 267 | if (unlikely(!test_bit(BNAD_TXQ_TX_STARTED, |
| 268 | &tcb->flags))) |
| 269 | continue; |
| 270 | if (netif_queue_stopped(bnad->netdev)) { |
| 271 | if (acked && netif_carrier_ok(bnad->netdev) && |
| 272 | BNA_QE_FREE_CNT(tcb, tcb->q_depth) >= |
| 273 | BNAD_NETIF_WAKE_THRESHOLD) { |
| 274 | netif_wake_queue(bnad->netdev); |
| 275 | /* TODO */ |
| 276 | /* Counters for individual TxQs? */ |
| 277 | BNAD_UPDATE_CTR(bnad, |
| 278 | netif_queue_wakeup); |
| 279 | } |
| 280 | } |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 281 | } |
| 282 | } |
| 283 | } |
| 284 | |
| 285 | static u32 |
| 286 | bnad_tx(struct bnad *bnad, struct bna_tcb *tcb) |
| 287 | { |
| 288 | struct net_device *netdev = bnad->netdev; |
Rasesh Mody | be7fa32 | 2010-12-23 21:45:01 +0000 | [diff] [blame] | 289 | u32 sent = 0; |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 290 | |
| 291 | if (test_and_set_bit(BNAD_TXQ_FREE_SENT, &tcb->flags)) |
| 292 | return 0; |
| 293 | |
| 294 | sent = bnad_free_txbufs(bnad, tcb); |
| 295 | if (sent) { |
| 296 | if (netif_queue_stopped(netdev) && |
| 297 | netif_carrier_ok(netdev) && |
| 298 | BNA_QE_FREE_CNT(tcb, tcb->q_depth) >= |
| 299 | BNAD_NETIF_WAKE_THRESHOLD) { |
Rasesh Mody | be7fa32 | 2010-12-23 21:45:01 +0000 | [diff] [blame] | 300 | if (test_bit(BNAD_TXQ_TX_STARTED, &tcb->flags)) { |
| 301 | netif_wake_queue(netdev); |
| 302 | BNAD_UPDATE_CTR(bnad, netif_queue_wakeup); |
| 303 | } |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 304 | } |
Rasesh Mody | be7fa32 | 2010-12-23 21:45:01 +0000 | [diff] [blame] | 305 | } |
| 306 | |
| 307 | if (likely(test_bit(BNAD_TXQ_TX_STARTED, &tcb->flags))) |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 308 | bna_ib_ack(tcb->i_dbell, sent); |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 309 | |
| 310 | smp_mb__before_clear_bit(); |
| 311 | clear_bit(BNAD_TXQ_FREE_SENT, &tcb->flags); |
| 312 | |
| 313 | return sent; |
| 314 | } |
| 315 | |
| 316 | /* MSIX Tx Completion Handler */ |
| 317 | static irqreturn_t |
| 318 | bnad_msix_tx(int irq, void *data) |
| 319 | { |
| 320 | struct bna_tcb *tcb = (struct bna_tcb *)data; |
| 321 | struct bnad *bnad = tcb->bnad; |
| 322 | |
| 323 | bnad_tx(bnad, tcb); |
| 324 | |
| 325 | return IRQ_HANDLED; |
| 326 | } |
| 327 | |
| 328 | static void |
| 329 | bnad_reset_rcb(struct bnad *bnad, struct bna_rcb *rcb) |
| 330 | { |
| 331 | struct bnad_unmap_q *unmap_q = rcb->unmap_q; |
| 332 | |
| 333 | rcb->producer_index = 0; |
| 334 | rcb->consumer_index = 0; |
| 335 | |
| 336 | unmap_q->producer_index = 0; |
| 337 | unmap_q->consumer_index = 0; |
| 338 | } |
| 339 | |
| 340 | static void |
Rasesh Mody | be7fa32 | 2010-12-23 21:45:01 +0000 | [diff] [blame] | 341 | bnad_free_all_rxbufs(struct bnad *bnad, struct bna_rcb *rcb) |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 342 | { |
| 343 | struct bnad_unmap_q *unmap_q; |
Ivan Vecera | 5ea7431 | 2011-02-02 04:37:02 +0000 | [diff] [blame] | 344 | struct bnad_skb_unmap *unmap_array; |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 345 | struct sk_buff *skb; |
Rasesh Mody | be7fa32 | 2010-12-23 21:45:01 +0000 | [diff] [blame] | 346 | int unmap_cons; |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 347 | |
| 348 | unmap_q = rcb->unmap_q; |
Ivan Vecera | 5ea7431 | 2011-02-02 04:37:02 +0000 | [diff] [blame] | 349 | unmap_array = unmap_q->unmap_array; |
Rasesh Mody | be7fa32 | 2010-12-23 21:45:01 +0000 | [diff] [blame] | 350 | for (unmap_cons = 0; unmap_cons < unmap_q->q_depth; unmap_cons++) { |
Ivan Vecera | 5ea7431 | 2011-02-02 04:37:02 +0000 | [diff] [blame] | 351 | skb = unmap_array[unmap_cons].skb; |
Rasesh Mody | be7fa32 | 2010-12-23 21:45:01 +0000 | [diff] [blame] | 352 | if (!skb) |
| 353 | continue; |
Ivan Vecera | 5ea7431 | 2011-02-02 04:37:02 +0000 | [diff] [blame] | 354 | unmap_array[unmap_cons].skb = NULL; |
| 355 | dma_unmap_single(&bnad->pcidev->dev, |
| 356 | dma_unmap_addr(&unmap_array[unmap_cons], |
| 357 | dma_addr), |
| 358 | rcb->rxq->buffer_size, |
| 359 | DMA_FROM_DEVICE); |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 360 | dev_kfree_skb(skb); |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 361 | } |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 362 | bnad_reset_rcb(bnad, rcb); |
| 363 | } |
| 364 | |
| 365 | static void |
| 366 | bnad_alloc_n_post_rxbufs(struct bnad *bnad, struct bna_rcb *rcb) |
| 367 | { |
| 368 | u16 to_alloc, alloced, unmap_prod, wi_range; |
| 369 | struct bnad_unmap_q *unmap_q = rcb->unmap_q; |
| 370 | struct bnad_skb_unmap *unmap_array; |
| 371 | struct bna_rxq_entry *rxent; |
| 372 | struct sk_buff *skb; |
| 373 | dma_addr_t dma_addr; |
| 374 | |
| 375 | alloced = 0; |
| 376 | to_alloc = |
| 377 | BNA_QE_FREE_CNT(unmap_q, unmap_q->q_depth); |
| 378 | |
| 379 | unmap_array = unmap_q->unmap_array; |
| 380 | unmap_prod = unmap_q->producer_index; |
| 381 | |
| 382 | BNA_RXQ_QPGE_PTR_GET(unmap_prod, rcb->sw_qpt, rxent, wi_range); |
| 383 | |
| 384 | while (to_alloc--) { |
| 385 | if (!wi_range) { |
| 386 | BNA_RXQ_QPGE_PTR_GET(unmap_prod, rcb->sw_qpt, rxent, |
| 387 | wi_range); |
| 388 | } |
Eric Dumazet | 0a0e234 | 2011-07-08 05:29:30 +0000 | [diff] [blame^] | 389 | skb = netdev_alloc_skb_ip_align(bnad->netdev, |
| 390 | rcb->rxq->buffer_size); |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 391 | if (unlikely(!skb)) { |
| 392 | BNAD_UPDATE_CTR(bnad, rxbuf_alloc_failed); |
| 393 | goto finishing; |
| 394 | } |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 395 | unmap_array[unmap_prod].skb = skb; |
Ivan Vecera | 5ea7431 | 2011-02-02 04:37:02 +0000 | [diff] [blame] | 396 | dma_addr = dma_map_single(&bnad->pcidev->dev, skb->data, |
| 397 | rcb->rxq->buffer_size, |
| 398 | DMA_FROM_DEVICE); |
| 399 | dma_unmap_addr_set(&unmap_array[unmap_prod], dma_addr, |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 400 | dma_addr); |
| 401 | BNA_SET_DMA_ADDR(dma_addr, &rxent->host_addr); |
| 402 | BNA_QE_INDX_ADD(unmap_prod, 1, unmap_q->q_depth); |
| 403 | |
| 404 | rxent++; |
| 405 | wi_range--; |
| 406 | alloced++; |
| 407 | } |
| 408 | |
| 409 | finishing: |
| 410 | if (likely(alloced)) { |
| 411 | unmap_q->producer_index = unmap_prod; |
| 412 | rcb->producer_index = unmap_prod; |
| 413 | smp_mb(); |
Rasesh Mody | be7fa32 | 2010-12-23 21:45:01 +0000 | [diff] [blame] | 414 | if (likely(test_bit(BNAD_RXQ_STARTED, &rcb->flags))) |
| 415 | bna_rxq_prod_indx_doorbell(rcb); |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 416 | } |
| 417 | } |
| 418 | |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 419 | static inline void |
| 420 | bnad_refill_rxq(struct bnad *bnad, struct bna_rcb *rcb) |
| 421 | { |
| 422 | struct bnad_unmap_q *unmap_q = rcb->unmap_q; |
| 423 | |
| 424 | if (!test_and_set_bit(BNAD_RXQ_REFILL, &rcb->flags)) { |
| 425 | if (BNA_QE_FREE_CNT(unmap_q, unmap_q->q_depth) |
| 426 | >> BNAD_RXQ_REFILL_THRESHOLD_SHIFT) |
| 427 | bnad_alloc_n_post_rxbufs(bnad, rcb); |
| 428 | smp_mb__before_clear_bit(); |
| 429 | clear_bit(BNAD_RXQ_REFILL, &rcb->flags); |
| 430 | } |
| 431 | } |
| 432 | |
| 433 | static u32 |
| 434 | bnad_poll_cq(struct bnad *bnad, struct bna_ccb *ccb, int budget) |
| 435 | { |
| 436 | struct bna_cq_entry *cmpl, *next_cmpl; |
| 437 | struct bna_rcb *rcb = NULL; |
| 438 | unsigned int wi_range, packets = 0, wis = 0; |
| 439 | struct bnad_unmap_q *unmap_q; |
Ivan Vecera | 5ea7431 | 2011-02-02 04:37:02 +0000 | [diff] [blame] | 440 | struct bnad_skb_unmap *unmap_array; |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 441 | struct sk_buff *skb; |
Ivan Vecera | 5ea7431 | 2011-02-02 04:37:02 +0000 | [diff] [blame] | 442 | u32 flags, unmap_cons; |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 443 | u32 qid0 = ccb->rcb[0]->rxq->rxq_id; |
| 444 | struct bna_pkt_rate *pkt_rt = &ccb->pkt_rate; |
| 445 | |
Rasesh Mody | be7fa32 | 2010-12-23 21:45:01 +0000 | [diff] [blame] | 446 | if (!test_bit(BNAD_RXQ_STARTED, &ccb->rcb[0]->flags)) |
| 447 | return 0; |
| 448 | |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 449 | prefetch(bnad->netdev); |
| 450 | BNA_CQ_QPGE_PTR_GET(ccb->producer_index, ccb->sw_qpt, cmpl, |
| 451 | wi_range); |
| 452 | BUG_ON(!(wi_range <= ccb->q_depth)); |
| 453 | while (cmpl->valid && packets < budget) { |
| 454 | packets++; |
| 455 | BNA_UPDATE_PKT_CNT(pkt_rt, ntohs(cmpl->length)); |
| 456 | |
| 457 | if (qid0 == cmpl->rxq_id) |
| 458 | rcb = ccb->rcb[0]; |
| 459 | else |
| 460 | rcb = ccb->rcb[1]; |
| 461 | |
| 462 | unmap_q = rcb->unmap_q; |
Ivan Vecera | 5ea7431 | 2011-02-02 04:37:02 +0000 | [diff] [blame] | 463 | unmap_array = unmap_q->unmap_array; |
| 464 | unmap_cons = unmap_q->consumer_index; |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 465 | |
Ivan Vecera | 5ea7431 | 2011-02-02 04:37:02 +0000 | [diff] [blame] | 466 | skb = unmap_array[unmap_cons].skb; |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 467 | BUG_ON(!(skb)); |
Ivan Vecera | 5ea7431 | 2011-02-02 04:37:02 +0000 | [diff] [blame] | 468 | unmap_array[unmap_cons].skb = NULL; |
| 469 | dma_unmap_single(&bnad->pcidev->dev, |
| 470 | dma_unmap_addr(&unmap_array[unmap_cons], |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 471 | dma_addr), |
Ivan Vecera | 5ea7431 | 2011-02-02 04:37:02 +0000 | [diff] [blame] | 472 | rcb->rxq->buffer_size, |
| 473 | DMA_FROM_DEVICE); |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 474 | BNA_QE_INDX_ADD(unmap_q->consumer_index, 1, unmap_q->q_depth); |
| 475 | |
| 476 | /* Should be more efficient ? Performance ? */ |
| 477 | BNA_QE_INDX_ADD(rcb->consumer_index, 1, rcb->q_depth); |
| 478 | |
| 479 | wis++; |
| 480 | if (likely(--wi_range)) |
| 481 | next_cmpl = cmpl + 1; |
| 482 | else { |
| 483 | BNA_QE_INDX_ADD(ccb->producer_index, wis, ccb->q_depth); |
| 484 | wis = 0; |
| 485 | BNA_CQ_QPGE_PTR_GET(ccb->producer_index, ccb->sw_qpt, |
| 486 | next_cmpl, wi_range); |
| 487 | BUG_ON(!(wi_range <= ccb->q_depth)); |
| 488 | } |
| 489 | prefetch(next_cmpl); |
| 490 | |
| 491 | flags = ntohl(cmpl->flags); |
| 492 | if (unlikely |
| 493 | (flags & |
| 494 | (BNA_CQ_EF_MAC_ERROR | BNA_CQ_EF_FCS_ERROR | |
| 495 | BNA_CQ_EF_TOO_LONG))) { |
| 496 | dev_kfree_skb_any(skb); |
| 497 | rcb->rxq->rx_packets_with_error++; |
| 498 | goto next; |
| 499 | } |
| 500 | |
| 501 | skb_put(skb, ntohs(cmpl->length)); |
| 502 | if (likely |
Michał Mirosław | e5ee20e | 2011-04-12 09:38:23 +0000 | [diff] [blame] | 503 | ((bnad->netdev->features & NETIF_F_RXCSUM) && |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 504 | (((flags & BNA_CQ_EF_IPV4) && |
| 505 | (flags & BNA_CQ_EF_L3_CKSUM_OK)) || |
| 506 | (flags & BNA_CQ_EF_IPV6)) && |
| 507 | (flags & (BNA_CQ_EF_TCP | BNA_CQ_EF_UDP)) && |
| 508 | (flags & BNA_CQ_EF_L4_CKSUM_OK))) |
| 509 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
| 510 | else |
Eric Dumazet | bc8acf2 | 2010-09-02 13:07:41 -0700 | [diff] [blame] | 511 | skb_checksum_none_assert(skb); |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 512 | |
| 513 | rcb->rxq->rx_packets++; |
| 514 | rcb->rxq->rx_bytes += skb->len; |
| 515 | skb->protocol = eth_type_trans(skb, bnad->netdev); |
| 516 | |
| 517 | if (bnad->vlan_grp && (flags & BNA_CQ_EF_VLAN)) { |
| 518 | struct bnad_rx_ctrl *rx_ctrl = |
| 519 | (struct bnad_rx_ctrl *)ccb->ctrl; |
| 520 | if (skb->ip_summed == CHECKSUM_UNNECESSARY) |
| 521 | vlan_gro_receive(&rx_ctrl->napi, bnad->vlan_grp, |
| 522 | ntohs(cmpl->vlan_tag), skb); |
| 523 | else |
| 524 | vlan_hwaccel_receive_skb(skb, |
| 525 | bnad->vlan_grp, |
| 526 | ntohs(cmpl->vlan_tag)); |
| 527 | |
| 528 | } else { /* Not VLAN tagged/stripped */ |
| 529 | struct bnad_rx_ctrl *rx_ctrl = |
| 530 | (struct bnad_rx_ctrl *)ccb->ctrl; |
| 531 | if (skb->ip_summed == CHECKSUM_UNNECESSARY) |
| 532 | napi_gro_receive(&rx_ctrl->napi, skb); |
| 533 | else |
| 534 | netif_receive_skb(skb); |
| 535 | } |
| 536 | |
| 537 | next: |
| 538 | cmpl->valid = 0; |
| 539 | cmpl = next_cmpl; |
| 540 | } |
| 541 | |
| 542 | BNA_QE_INDX_ADD(ccb->producer_index, wis, ccb->q_depth); |
| 543 | |
| 544 | if (likely(ccb)) { |
Rasesh Mody | be7fa32 | 2010-12-23 21:45:01 +0000 | [diff] [blame] | 545 | if (likely(test_bit(BNAD_RXQ_STARTED, &ccb->rcb[0]->flags))) |
| 546 | bna_ib_ack(ccb->i_dbell, packets); |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 547 | bnad_refill_rxq(bnad, ccb->rcb[0]); |
| 548 | if (ccb->rcb[1]) |
| 549 | bnad_refill_rxq(bnad, ccb->rcb[1]); |
Rasesh Mody | be7fa32 | 2010-12-23 21:45:01 +0000 | [diff] [blame] | 550 | } else { |
| 551 | if (likely(test_bit(BNAD_RXQ_STARTED, &ccb->rcb[0]->flags))) |
| 552 | bna_ib_ack(ccb->i_dbell, 0); |
| 553 | } |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 554 | |
| 555 | return packets; |
| 556 | } |
| 557 | |
| 558 | static void |
| 559 | bnad_disable_rx_irq(struct bnad *bnad, struct bna_ccb *ccb) |
| 560 | { |
Rasesh Mody | be7fa32 | 2010-12-23 21:45:01 +0000 | [diff] [blame] | 561 | if (unlikely(!test_bit(BNAD_RXQ_STARTED, &ccb->rcb[0]->flags))) |
| 562 | return; |
| 563 | |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 564 | bna_ib_coalescing_timer_set(ccb->i_dbell, 0); |
| 565 | bna_ib_ack(ccb->i_dbell, 0); |
| 566 | } |
| 567 | |
| 568 | static void |
| 569 | bnad_enable_rx_irq(struct bnad *bnad, struct bna_ccb *ccb) |
| 570 | { |
Rasesh Mody | e2fa6f2 | 2010-10-05 15:46:04 +0000 | [diff] [blame] | 571 | unsigned long flags; |
| 572 | |
Rasesh Mody | aad75b6 | 2010-12-23 21:45:08 +0000 | [diff] [blame] | 573 | /* Because of polling context */ |
| 574 | spin_lock_irqsave(&bnad->bna_lock, flags); |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 575 | bnad_enable_rx_irq_unsafe(ccb); |
Rasesh Mody | e2fa6f2 | 2010-10-05 15:46:04 +0000 | [diff] [blame] | 576 | spin_unlock_irqrestore(&bnad->bna_lock, flags); |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 577 | } |
| 578 | |
| 579 | static void |
| 580 | bnad_netif_rx_schedule_poll(struct bnad *bnad, struct bna_ccb *ccb) |
| 581 | { |
| 582 | struct bnad_rx_ctrl *rx_ctrl = (struct bnad_rx_ctrl *)(ccb->ctrl); |
Rasesh Mody | be7fa32 | 2010-12-23 21:45:01 +0000 | [diff] [blame] | 583 | struct napi_struct *napi = &rx_ctrl->napi; |
| 584 | |
| 585 | if (likely(napi_schedule_prep(napi))) { |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 586 | bnad_disable_rx_irq(bnad, ccb); |
Rasesh Mody | be7fa32 | 2010-12-23 21:45:01 +0000 | [diff] [blame] | 587 | __napi_schedule(napi); |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 588 | } |
| 589 | BNAD_UPDATE_CTR(bnad, netif_rx_schedule); |
| 590 | } |
| 591 | |
| 592 | /* MSIX Rx Path Handler */ |
| 593 | static irqreturn_t |
| 594 | bnad_msix_rx(int irq, void *data) |
| 595 | { |
| 596 | struct bna_ccb *ccb = (struct bna_ccb *)data; |
| 597 | struct bnad *bnad = ccb->bnad; |
| 598 | |
| 599 | bnad_netif_rx_schedule_poll(bnad, ccb); |
| 600 | |
| 601 | return IRQ_HANDLED; |
| 602 | } |
| 603 | |
| 604 | /* Interrupt handlers */ |
| 605 | |
| 606 | /* Mbox Interrupt Handlers */ |
| 607 | static irqreturn_t |
| 608 | bnad_msix_mbox_handler(int irq, void *data) |
| 609 | { |
| 610 | u32 intr_status; |
Rasesh Mody | e2fa6f2 | 2010-10-05 15:46:04 +0000 | [diff] [blame] | 611 | unsigned long flags; |
Rasesh Mody | be7fa32 | 2010-12-23 21:45:01 +0000 | [diff] [blame] | 612 | struct bnad *bnad = (struct bnad *)data; |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 613 | |
Rasesh Mody | be7fa32 | 2010-12-23 21:45:01 +0000 | [diff] [blame] | 614 | if (unlikely(test_bit(BNAD_RF_MBOX_IRQ_DISABLED, &bnad->run_flags))) |
| 615 | return IRQ_HANDLED; |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 616 | |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 617 | spin_lock_irqsave(&bnad->bna_lock, flags); |
| 618 | |
| 619 | bna_intr_status_get(&bnad->bna, intr_status); |
| 620 | |
| 621 | if (BNA_IS_MBOX_ERR_INTR(intr_status)) |
| 622 | bna_mbox_handler(&bnad->bna, intr_status); |
| 623 | |
| 624 | spin_unlock_irqrestore(&bnad->bna_lock, flags); |
| 625 | |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 626 | return IRQ_HANDLED; |
| 627 | } |
| 628 | |
| 629 | static irqreturn_t |
| 630 | bnad_isr(int irq, void *data) |
| 631 | { |
| 632 | int i, j; |
| 633 | u32 intr_status; |
| 634 | unsigned long flags; |
Rasesh Mody | be7fa32 | 2010-12-23 21:45:01 +0000 | [diff] [blame] | 635 | struct bnad *bnad = (struct bnad *)data; |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 636 | struct bnad_rx_info *rx_info; |
| 637 | struct bnad_rx_ctrl *rx_ctrl; |
| 638 | |
Rasesh Mody | e2fa6f2 | 2010-10-05 15:46:04 +0000 | [diff] [blame] | 639 | if (unlikely(test_bit(BNAD_RF_MBOX_IRQ_DISABLED, &bnad->run_flags))) |
| 640 | return IRQ_NONE; |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 641 | |
| 642 | bna_intr_status_get(&bnad->bna, intr_status); |
Rasesh Mody | e2fa6f2 | 2010-10-05 15:46:04 +0000 | [diff] [blame] | 643 | |
| 644 | if (unlikely(!intr_status)) |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 645 | return IRQ_NONE; |
Rasesh Mody | e2fa6f2 | 2010-10-05 15:46:04 +0000 | [diff] [blame] | 646 | |
| 647 | spin_lock_irqsave(&bnad->bna_lock, flags); |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 648 | |
Rasesh Mody | be7fa32 | 2010-12-23 21:45:01 +0000 | [diff] [blame] | 649 | if (BNA_IS_MBOX_ERR_INTR(intr_status)) |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 650 | bna_mbox_handler(&bnad->bna, intr_status); |
Rasesh Mody | be7fa32 | 2010-12-23 21:45:01 +0000 | [diff] [blame] | 651 | |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 652 | spin_unlock_irqrestore(&bnad->bna_lock, flags); |
| 653 | |
Rasesh Mody | be7fa32 | 2010-12-23 21:45:01 +0000 | [diff] [blame] | 654 | if (!BNA_IS_INTX_DATA_INTR(intr_status)) |
| 655 | return IRQ_HANDLED; |
| 656 | |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 657 | /* Process data interrupts */ |
Rasesh Mody | be7fa32 | 2010-12-23 21:45:01 +0000 | [diff] [blame] | 658 | /* Tx processing */ |
| 659 | for (i = 0; i < bnad->num_tx; i++) { |
| 660 | for (j = 0; j < bnad->num_txq_per_tx; j++) |
| 661 | bnad_tx(bnad, bnad->tx_info[i].tcb[j]); |
| 662 | } |
| 663 | /* Rx processing */ |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 664 | for (i = 0; i < bnad->num_rx; i++) { |
| 665 | rx_info = &bnad->rx_info[i]; |
| 666 | if (!rx_info->rx) |
| 667 | continue; |
| 668 | for (j = 0; j < bnad->num_rxp_per_rx; j++) { |
| 669 | rx_ctrl = &rx_info->rx_ctrl[j]; |
| 670 | if (rx_ctrl->ccb) |
| 671 | bnad_netif_rx_schedule_poll(bnad, |
| 672 | rx_ctrl->ccb); |
| 673 | } |
| 674 | } |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 675 | return IRQ_HANDLED; |
| 676 | } |
| 677 | |
| 678 | /* |
| 679 | * Called in interrupt / callback context |
| 680 | * with bna_lock held, so cfg_flags access is OK |
| 681 | */ |
| 682 | static void |
| 683 | bnad_enable_mbox_irq(struct bnad *bnad) |
| 684 | { |
Rasesh Mody | be7fa32 | 2010-12-23 21:45:01 +0000 | [diff] [blame] | 685 | clear_bit(BNAD_RF_MBOX_IRQ_DISABLED, &bnad->run_flags); |
Rasesh Mody | e2fa6f2 | 2010-10-05 15:46:04 +0000 | [diff] [blame] | 686 | |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 687 | BNAD_UPDATE_CTR(bnad, mbox_intr_enabled); |
| 688 | } |
| 689 | |
| 690 | /* |
| 691 | * Called with bnad->bna_lock held b'cos of |
| 692 | * bnad->cfg_flags access. |
| 693 | */ |
Rasesh Mody | b7ee31c5 | 2010-10-05 15:46:05 +0000 | [diff] [blame] | 694 | static void |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 695 | bnad_disable_mbox_irq(struct bnad *bnad) |
| 696 | { |
Rasesh Mody | be7fa32 | 2010-12-23 21:45:01 +0000 | [diff] [blame] | 697 | set_bit(BNAD_RF_MBOX_IRQ_DISABLED, &bnad->run_flags); |
Rasesh Mody | e2fa6f2 | 2010-10-05 15:46:04 +0000 | [diff] [blame] | 698 | |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 699 | BNAD_UPDATE_CTR(bnad, mbox_intr_disabled); |
| 700 | } |
| 701 | |
Rasesh Mody | be7fa32 | 2010-12-23 21:45:01 +0000 | [diff] [blame] | 702 | static void |
| 703 | bnad_set_netdev_perm_addr(struct bnad *bnad) |
| 704 | { |
| 705 | struct net_device *netdev = bnad->netdev; |
| 706 | |
| 707 | memcpy(netdev->perm_addr, &bnad->perm_addr, netdev->addr_len); |
| 708 | if (is_zero_ether_addr(netdev->dev_addr)) |
| 709 | memcpy(netdev->dev_addr, &bnad->perm_addr, netdev->addr_len); |
| 710 | } |
| 711 | |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 712 | /* Control Path Handlers */ |
| 713 | |
| 714 | /* Callbacks */ |
| 715 | void |
| 716 | bnad_cb_device_enable_mbox_intr(struct bnad *bnad) |
| 717 | { |
| 718 | bnad_enable_mbox_irq(bnad); |
| 719 | } |
| 720 | |
| 721 | void |
| 722 | bnad_cb_device_disable_mbox_intr(struct bnad *bnad) |
| 723 | { |
| 724 | bnad_disable_mbox_irq(bnad); |
| 725 | } |
| 726 | |
| 727 | void |
| 728 | bnad_cb_device_enabled(struct bnad *bnad, enum bna_cb_status status) |
| 729 | { |
| 730 | complete(&bnad->bnad_completions.ioc_comp); |
| 731 | bnad->bnad_completions.ioc_comp_status = status; |
| 732 | } |
| 733 | |
| 734 | void |
| 735 | bnad_cb_device_disabled(struct bnad *bnad, enum bna_cb_status status) |
| 736 | { |
| 737 | complete(&bnad->bnad_completions.ioc_comp); |
| 738 | bnad->bnad_completions.ioc_comp_status = status; |
| 739 | } |
| 740 | |
| 741 | static void |
| 742 | bnad_cb_port_disabled(void *arg, enum bna_cb_status status) |
| 743 | { |
| 744 | struct bnad *bnad = (struct bnad *)arg; |
| 745 | |
| 746 | complete(&bnad->bnad_completions.port_comp); |
| 747 | |
| 748 | netif_carrier_off(bnad->netdev); |
| 749 | } |
| 750 | |
| 751 | void |
| 752 | bnad_cb_port_link_status(struct bnad *bnad, |
| 753 | enum bna_link_status link_status) |
| 754 | { |
| 755 | bool link_up = 0; |
| 756 | |
| 757 | link_up = (link_status == BNA_LINK_UP) || (link_status == BNA_CEE_UP); |
| 758 | |
| 759 | if (link_status == BNA_CEE_UP) { |
| 760 | set_bit(BNAD_RF_CEE_RUNNING, &bnad->run_flags); |
| 761 | BNAD_UPDATE_CTR(bnad, cee_up); |
| 762 | } else |
| 763 | clear_bit(BNAD_RF_CEE_RUNNING, &bnad->run_flags); |
| 764 | |
| 765 | if (link_up) { |
| 766 | if (!netif_carrier_ok(bnad->netdev)) { |
Rasesh Mody | be7fa32 | 2010-12-23 21:45:01 +0000 | [diff] [blame] | 767 | struct bna_tcb *tcb = bnad->tx_info[0].tcb[0]; |
| 768 | if (!tcb) |
| 769 | return; |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 770 | pr_warn("bna: %s link up\n", |
| 771 | bnad->netdev->name); |
| 772 | netif_carrier_on(bnad->netdev); |
| 773 | BNAD_UPDATE_CTR(bnad, link_toggle); |
Rasesh Mody | be7fa32 | 2010-12-23 21:45:01 +0000 | [diff] [blame] | 774 | if (test_bit(BNAD_TXQ_TX_STARTED, &tcb->flags)) { |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 775 | /* Force an immediate Transmit Schedule */ |
| 776 | pr_info("bna: %s TX_STARTED\n", |
| 777 | bnad->netdev->name); |
| 778 | netif_wake_queue(bnad->netdev); |
| 779 | BNAD_UPDATE_CTR(bnad, netif_queue_wakeup); |
| 780 | } else { |
| 781 | netif_stop_queue(bnad->netdev); |
| 782 | BNAD_UPDATE_CTR(bnad, netif_queue_stop); |
| 783 | } |
| 784 | } |
| 785 | } else { |
| 786 | if (netif_carrier_ok(bnad->netdev)) { |
| 787 | pr_warn("bna: %s link down\n", |
| 788 | bnad->netdev->name); |
| 789 | netif_carrier_off(bnad->netdev); |
| 790 | BNAD_UPDATE_CTR(bnad, link_toggle); |
| 791 | } |
| 792 | } |
| 793 | } |
| 794 | |
| 795 | static void |
| 796 | bnad_cb_tx_disabled(void *arg, struct bna_tx *tx, |
| 797 | enum bna_cb_status status) |
| 798 | { |
| 799 | struct bnad *bnad = (struct bnad *)arg; |
| 800 | |
| 801 | complete(&bnad->bnad_completions.tx_comp); |
| 802 | } |
| 803 | |
| 804 | static void |
| 805 | bnad_cb_tcb_setup(struct bnad *bnad, struct bna_tcb *tcb) |
| 806 | { |
| 807 | struct bnad_tx_info *tx_info = |
| 808 | (struct bnad_tx_info *)tcb->txq->tx->priv; |
| 809 | struct bnad_unmap_q *unmap_q = tcb->unmap_q; |
| 810 | |
| 811 | tx_info->tcb[tcb->id] = tcb; |
| 812 | unmap_q->producer_index = 0; |
| 813 | unmap_q->consumer_index = 0; |
| 814 | unmap_q->q_depth = BNAD_TX_UNMAPQ_DEPTH; |
| 815 | } |
| 816 | |
| 817 | static void |
| 818 | bnad_cb_tcb_destroy(struct bnad *bnad, struct bna_tcb *tcb) |
| 819 | { |
| 820 | struct bnad_tx_info *tx_info = |
| 821 | (struct bnad_tx_info *)tcb->txq->tx->priv; |
Rasesh Mody | be7fa32 | 2010-12-23 21:45:01 +0000 | [diff] [blame] | 822 | struct bnad_unmap_q *unmap_q = tcb->unmap_q; |
| 823 | |
| 824 | while (test_and_set_bit(BNAD_TXQ_FREE_SENT, &tcb->flags)) |
| 825 | cpu_relax(); |
| 826 | |
| 827 | bnad_free_all_txbufs(bnad, tcb); |
| 828 | |
| 829 | unmap_q->producer_index = 0; |
| 830 | unmap_q->consumer_index = 0; |
| 831 | |
| 832 | smp_mb__before_clear_bit(); |
| 833 | clear_bit(BNAD_TXQ_FREE_SENT, &tcb->flags); |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 834 | |
| 835 | tx_info->tcb[tcb->id] = NULL; |
| 836 | } |
| 837 | |
| 838 | static void |
| 839 | bnad_cb_rcb_setup(struct bnad *bnad, struct bna_rcb *rcb) |
| 840 | { |
| 841 | struct bnad_unmap_q *unmap_q = rcb->unmap_q; |
| 842 | |
| 843 | unmap_q->producer_index = 0; |
| 844 | unmap_q->consumer_index = 0; |
| 845 | unmap_q->q_depth = BNAD_RX_UNMAPQ_DEPTH; |
| 846 | } |
| 847 | |
| 848 | static void |
Rasesh Mody | be7fa32 | 2010-12-23 21:45:01 +0000 | [diff] [blame] | 849 | bnad_cb_rcb_destroy(struct bnad *bnad, struct bna_rcb *rcb) |
| 850 | { |
| 851 | bnad_free_all_rxbufs(bnad, rcb); |
| 852 | } |
| 853 | |
| 854 | static void |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 855 | bnad_cb_ccb_setup(struct bnad *bnad, struct bna_ccb *ccb) |
| 856 | { |
| 857 | struct bnad_rx_info *rx_info = |
| 858 | (struct bnad_rx_info *)ccb->cq->rx->priv; |
| 859 | |
| 860 | rx_info->rx_ctrl[ccb->id].ccb = ccb; |
| 861 | ccb->ctrl = &rx_info->rx_ctrl[ccb->id]; |
| 862 | } |
| 863 | |
| 864 | static void |
| 865 | bnad_cb_ccb_destroy(struct bnad *bnad, struct bna_ccb *ccb) |
| 866 | { |
| 867 | struct bnad_rx_info *rx_info = |
| 868 | (struct bnad_rx_info *)ccb->cq->rx->priv; |
| 869 | |
| 870 | rx_info->rx_ctrl[ccb->id].ccb = NULL; |
| 871 | } |
| 872 | |
| 873 | static void |
| 874 | bnad_cb_tx_stall(struct bnad *bnad, struct bna_tcb *tcb) |
| 875 | { |
| 876 | struct bnad_tx_info *tx_info = |
| 877 | (struct bnad_tx_info *)tcb->txq->tx->priv; |
| 878 | |
| 879 | if (tx_info != &bnad->tx_info[0]) |
| 880 | return; |
| 881 | |
Rasesh Mody | be7fa32 | 2010-12-23 21:45:01 +0000 | [diff] [blame] | 882 | clear_bit(BNAD_TXQ_TX_STARTED, &tcb->flags); |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 883 | netif_stop_queue(bnad->netdev); |
| 884 | pr_info("bna: %s TX_STOPPED\n", bnad->netdev->name); |
| 885 | } |
| 886 | |
| 887 | static void |
| 888 | bnad_cb_tx_resume(struct bnad *bnad, struct bna_tcb *tcb) |
| 889 | { |
Rasesh Mody | be7fa32 | 2010-12-23 21:45:01 +0000 | [diff] [blame] | 890 | struct bnad_unmap_q *unmap_q = tcb->unmap_q; |
| 891 | |
| 892 | if (test_bit(BNAD_TXQ_TX_STARTED, &tcb->flags)) |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 893 | return; |
| 894 | |
Rasesh Mody | be7fa32 | 2010-12-23 21:45:01 +0000 | [diff] [blame] | 895 | clear_bit(BNAD_RF_TX_SHUTDOWN_DELAYED, &bnad->run_flags); |
| 896 | |
| 897 | while (test_and_set_bit(BNAD_TXQ_FREE_SENT, &tcb->flags)) |
| 898 | cpu_relax(); |
| 899 | |
| 900 | bnad_free_all_txbufs(bnad, tcb); |
| 901 | |
| 902 | unmap_q->producer_index = 0; |
| 903 | unmap_q->consumer_index = 0; |
| 904 | |
| 905 | smp_mb__before_clear_bit(); |
| 906 | clear_bit(BNAD_TXQ_FREE_SENT, &tcb->flags); |
| 907 | |
| 908 | /* |
| 909 | * Workaround for first device enable failure & we |
| 910 | * get a 0 MAC address. We try to get the MAC address |
| 911 | * again here. |
| 912 | */ |
| 913 | if (is_zero_ether_addr(&bnad->perm_addr.mac[0])) { |
| 914 | bna_port_mac_get(&bnad->bna.port, &bnad->perm_addr); |
| 915 | bnad_set_netdev_perm_addr(bnad); |
| 916 | } |
| 917 | |
| 918 | set_bit(BNAD_TXQ_TX_STARTED, &tcb->flags); |
| 919 | |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 920 | if (netif_carrier_ok(bnad->netdev)) { |
| 921 | pr_info("bna: %s TX_STARTED\n", bnad->netdev->name); |
| 922 | netif_wake_queue(bnad->netdev); |
| 923 | BNAD_UPDATE_CTR(bnad, netif_queue_wakeup); |
| 924 | } |
| 925 | } |
| 926 | |
| 927 | static void |
| 928 | bnad_cb_tx_cleanup(struct bnad *bnad, struct bna_tcb *tcb) |
| 929 | { |
Rasesh Mody | be7fa32 | 2010-12-23 21:45:01 +0000 | [diff] [blame] | 930 | /* Delay only once for the whole Tx Path Shutdown */ |
| 931 | if (!test_and_set_bit(BNAD_RF_TX_SHUTDOWN_DELAYED, &bnad->run_flags)) |
| 932 | mdelay(BNAD_TXRX_SYNC_MDELAY); |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 933 | } |
| 934 | |
| 935 | static void |
| 936 | bnad_cb_rx_cleanup(struct bnad *bnad, |
| 937 | struct bna_ccb *ccb) |
| 938 | { |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 939 | clear_bit(BNAD_RXQ_STARTED, &ccb->rcb[0]->flags); |
| 940 | |
Rasesh Mody | be7fa32 | 2010-12-23 21:45:01 +0000 | [diff] [blame] | 941 | if (ccb->rcb[1]) |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 942 | clear_bit(BNAD_RXQ_STARTED, &ccb->rcb[1]->flags); |
Rasesh Mody | be7fa32 | 2010-12-23 21:45:01 +0000 | [diff] [blame] | 943 | |
| 944 | if (!test_and_set_bit(BNAD_RF_RX_SHUTDOWN_DELAYED, &bnad->run_flags)) |
| 945 | mdelay(BNAD_TXRX_SYNC_MDELAY); |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 946 | } |
| 947 | |
| 948 | static void |
| 949 | bnad_cb_rx_post(struct bnad *bnad, struct bna_rcb *rcb) |
| 950 | { |
| 951 | struct bnad_unmap_q *unmap_q = rcb->unmap_q; |
| 952 | |
Rasesh Mody | be7fa32 | 2010-12-23 21:45:01 +0000 | [diff] [blame] | 953 | clear_bit(BNAD_RF_RX_SHUTDOWN_DELAYED, &bnad->run_flags); |
| 954 | |
| 955 | if (rcb == rcb->cq->ccb->rcb[0]) |
| 956 | bnad_cq_cmpl_init(bnad, rcb->cq->ccb); |
| 957 | |
| 958 | bnad_free_all_rxbufs(bnad, rcb); |
| 959 | |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 960 | set_bit(BNAD_RXQ_STARTED, &rcb->flags); |
| 961 | |
| 962 | /* Now allocate & post buffers for this RCB */ |
| 963 | /* !!Allocation in callback context */ |
| 964 | if (!test_and_set_bit(BNAD_RXQ_REFILL, &rcb->flags)) { |
| 965 | if (BNA_QE_FREE_CNT(unmap_q, unmap_q->q_depth) |
| 966 | >> BNAD_RXQ_REFILL_THRESHOLD_SHIFT) |
| 967 | bnad_alloc_n_post_rxbufs(bnad, rcb); |
| 968 | smp_mb__before_clear_bit(); |
| 969 | clear_bit(BNAD_RXQ_REFILL, &rcb->flags); |
| 970 | } |
| 971 | } |
| 972 | |
| 973 | static void |
| 974 | bnad_cb_rx_disabled(void *arg, struct bna_rx *rx, |
| 975 | enum bna_cb_status status) |
| 976 | { |
| 977 | struct bnad *bnad = (struct bnad *)arg; |
| 978 | |
| 979 | complete(&bnad->bnad_completions.rx_comp); |
| 980 | } |
| 981 | |
| 982 | static void |
| 983 | bnad_cb_rx_mcast_add(struct bnad *bnad, struct bna_rx *rx, |
| 984 | enum bna_cb_status status) |
| 985 | { |
| 986 | bnad->bnad_completions.mcast_comp_status = status; |
| 987 | complete(&bnad->bnad_completions.mcast_comp); |
| 988 | } |
| 989 | |
| 990 | void |
| 991 | bnad_cb_stats_get(struct bnad *bnad, enum bna_cb_status status, |
| 992 | struct bna_stats *stats) |
| 993 | { |
| 994 | if (status == BNA_CB_SUCCESS) |
| 995 | BNAD_UPDATE_CTR(bnad, hw_stats_updates); |
| 996 | |
| 997 | if (!netif_running(bnad->netdev) || |
| 998 | !test_bit(BNAD_RF_STATS_TIMER_RUNNING, &bnad->run_flags)) |
| 999 | return; |
| 1000 | |
| 1001 | mod_timer(&bnad->stats_timer, |
| 1002 | jiffies + msecs_to_jiffies(BNAD_STATS_TIMER_FREQ)); |
| 1003 | } |
| 1004 | |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 1005 | /* Resource allocation, free functions */ |
| 1006 | |
| 1007 | static void |
| 1008 | bnad_mem_free(struct bnad *bnad, |
| 1009 | struct bna_mem_info *mem_info) |
| 1010 | { |
| 1011 | int i; |
| 1012 | dma_addr_t dma_pa; |
| 1013 | |
| 1014 | if (mem_info->mdl == NULL) |
| 1015 | return; |
| 1016 | |
| 1017 | for (i = 0; i < mem_info->num; i++) { |
| 1018 | if (mem_info->mdl[i].kva != NULL) { |
| 1019 | if (mem_info->mem_type == BNA_MEM_T_DMA) { |
| 1020 | BNA_GET_DMA_ADDR(&(mem_info->mdl[i].dma), |
| 1021 | dma_pa); |
Ivan Vecera | 5ea7431 | 2011-02-02 04:37:02 +0000 | [diff] [blame] | 1022 | dma_free_coherent(&bnad->pcidev->dev, |
| 1023 | mem_info->mdl[i].len, |
| 1024 | mem_info->mdl[i].kva, dma_pa); |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 1025 | } else |
| 1026 | kfree(mem_info->mdl[i].kva); |
| 1027 | } |
| 1028 | } |
| 1029 | kfree(mem_info->mdl); |
| 1030 | mem_info->mdl = NULL; |
| 1031 | } |
| 1032 | |
| 1033 | static int |
| 1034 | bnad_mem_alloc(struct bnad *bnad, |
| 1035 | struct bna_mem_info *mem_info) |
| 1036 | { |
| 1037 | int i; |
| 1038 | dma_addr_t dma_pa; |
| 1039 | |
| 1040 | if ((mem_info->num == 0) || (mem_info->len == 0)) { |
| 1041 | mem_info->mdl = NULL; |
| 1042 | return 0; |
| 1043 | } |
| 1044 | |
| 1045 | mem_info->mdl = kcalloc(mem_info->num, sizeof(struct bna_mem_descr), |
| 1046 | GFP_KERNEL); |
| 1047 | if (mem_info->mdl == NULL) |
| 1048 | return -ENOMEM; |
| 1049 | |
| 1050 | if (mem_info->mem_type == BNA_MEM_T_DMA) { |
| 1051 | for (i = 0; i < mem_info->num; i++) { |
| 1052 | mem_info->mdl[i].len = mem_info->len; |
| 1053 | mem_info->mdl[i].kva = |
Ivan Vecera | 5ea7431 | 2011-02-02 04:37:02 +0000 | [diff] [blame] | 1054 | dma_alloc_coherent(&bnad->pcidev->dev, |
| 1055 | mem_info->len, &dma_pa, |
| 1056 | GFP_KERNEL); |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 1057 | |
| 1058 | if (mem_info->mdl[i].kva == NULL) |
| 1059 | goto err_return; |
| 1060 | |
| 1061 | BNA_SET_DMA_ADDR(dma_pa, |
| 1062 | &(mem_info->mdl[i].dma)); |
| 1063 | } |
| 1064 | } else { |
| 1065 | for (i = 0; i < mem_info->num; i++) { |
| 1066 | mem_info->mdl[i].len = mem_info->len; |
| 1067 | mem_info->mdl[i].kva = kzalloc(mem_info->len, |
| 1068 | GFP_KERNEL); |
| 1069 | if (mem_info->mdl[i].kva == NULL) |
| 1070 | goto err_return; |
| 1071 | } |
| 1072 | } |
| 1073 | |
| 1074 | return 0; |
| 1075 | |
| 1076 | err_return: |
| 1077 | bnad_mem_free(bnad, mem_info); |
| 1078 | return -ENOMEM; |
| 1079 | } |
| 1080 | |
| 1081 | /* Free IRQ for Mailbox */ |
| 1082 | static void |
| 1083 | bnad_mbox_irq_free(struct bnad *bnad, |
| 1084 | struct bna_intr_info *intr_info) |
| 1085 | { |
| 1086 | int irq; |
| 1087 | unsigned long flags; |
| 1088 | |
| 1089 | if (intr_info->idl == NULL) |
| 1090 | return; |
| 1091 | |
| 1092 | spin_lock_irqsave(&bnad->bna_lock, flags); |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 1093 | bnad_disable_mbox_irq(bnad); |
Rasesh Mody | e2fa6f2 | 2010-10-05 15:46:04 +0000 | [diff] [blame] | 1094 | spin_unlock_irqrestore(&bnad->bna_lock, flags); |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 1095 | |
| 1096 | irq = BNAD_GET_MBOX_IRQ(bnad); |
Rasesh Mody | be7fa32 | 2010-12-23 21:45:01 +0000 | [diff] [blame] | 1097 | free_irq(irq, bnad); |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 1098 | |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 1099 | kfree(intr_info->idl); |
| 1100 | } |
| 1101 | |
| 1102 | /* |
| 1103 | * Allocates IRQ for Mailbox, but keep it disabled |
| 1104 | * This will be enabled once we get the mbox enable callback |
| 1105 | * from bna |
| 1106 | */ |
| 1107 | static int |
| 1108 | bnad_mbox_irq_alloc(struct bnad *bnad, |
| 1109 | struct bna_intr_info *intr_info) |
| 1110 | { |
Rasesh Mody | be7fa32 | 2010-12-23 21:45:01 +0000 | [diff] [blame] | 1111 | int err = 0; |
Shyam Iyer | 5f77898 | 2011-06-28 08:58:05 +0000 | [diff] [blame] | 1112 | unsigned long irq_flags = 0, flags; |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 1113 | u32 irq; |
| 1114 | irq_handler_t irq_handler; |
| 1115 | |
| 1116 | /* Mbox should use only 1 vector */ |
| 1117 | |
| 1118 | intr_info->idl = kzalloc(sizeof(*(intr_info->idl)), GFP_KERNEL); |
| 1119 | if (!intr_info->idl) |
| 1120 | return -ENOMEM; |
| 1121 | |
| 1122 | spin_lock_irqsave(&bnad->bna_lock, flags); |
| 1123 | if (bnad->cfg_flags & BNAD_CF_MSIX) { |
| 1124 | irq_handler = (irq_handler_t)bnad_msix_mbox_handler; |
| 1125 | irq = bnad->msix_table[bnad->msix_num - 1].vector; |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 1126 | intr_info->intr_type = BNA_INTR_T_MSIX; |
| 1127 | intr_info->idl[0].vector = bnad->msix_num - 1; |
| 1128 | } else { |
| 1129 | irq_handler = (irq_handler_t)bnad_isr; |
| 1130 | irq = bnad->pcidev->irq; |
Shyam Iyer | 5f77898 | 2011-06-28 08:58:05 +0000 | [diff] [blame] | 1131 | irq_flags = IRQF_SHARED; |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 1132 | intr_info->intr_type = BNA_INTR_T_INTX; |
| 1133 | /* intr_info->idl.vector = 0 ? */ |
| 1134 | } |
| 1135 | spin_unlock_irqrestore(&bnad->bna_lock, flags); |
Shyam Iyer | 5f77898 | 2011-06-28 08:58:05 +0000 | [diff] [blame] | 1136 | flags = irq_flags; |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 1137 | sprintf(bnad->mbox_irq_name, "%s", BNAD_NAME); |
| 1138 | |
Rasesh Mody | e2fa6f2 | 2010-10-05 15:46:04 +0000 | [diff] [blame] | 1139 | /* |
| 1140 | * Set the Mbox IRQ disable flag, so that the IRQ handler |
| 1141 | * called from request_irq() for SHARED IRQs do not execute |
| 1142 | */ |
| 1143 | set_bit(BNAD_RF_MBOX_IRQ_DISABLED, &bnad->run_flags); |
| 1144 | |
Rasesh Mody | be7fa32 | 2010-12-23 21:45:01 +0000 | [diff] [blame] | 1145 | BNAD_UPDATE_CTR(bnad, mbox_intr_disabled); |
| 1146 | |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 1147 | err = request_irq(irq, irq_handler, flags, |
Rasesh Mody | be7fa32 | 2010-12-23 21:45:01 +0000 | [diff] [blame] | 1148 | bnad->mbox_irq_name, bnad); |
Rasesh Mody | e2fa6f2 | 2010-10-05 15:46:04 +0000 | [diff] [blame] | 1149 | |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 1150 | if (err) { |
| 1151 | kfree(intr_info->idl); |
| 1152 | intr_info->idl = NULL; |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 1153 | } |
| 1154 | |
Rasesh Mody | be7fa32 | 2010-12-23 21:45:01 +0000 | [diff] [blame] | 1155 | return err; |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 1156 | } |
| 1157 | |
| 1158 | static void |
| 1159 | bnad_txrx_irq_free(struct bnad *bnad, struct bna_intr_info *intr_info) |
| 1160 | { |
| 1161 | kfree(intr_info->idl); |
| 1162 | intr_info->idl = NULL; |
| 1163 | } |
| 1164 | |
| 1165 | /* Allocates Interrupt Descriptor List for MSIX/INT-X vectors */ |
| 1166 | static int |
| 1167 | bnad_txrx_irq_alloc(struct bnad *bnad, enum bnad_intr_source src, |
| 1168 | uint txrx_id, struct bna_intr_info *intr_info) |
| 1169 | { |
| 1170 | int i, vector_start = 0; |
| 1171 | u32 cfg_flags; |
| 1172 | unsigned long flags; |
| 1173 | |
| 1174 | spin_lock_irqsave(&bnad->bna_lock, flags); |
| 1175 | cfg_flags = bnad->cfg_flags; |
| 1176 | spin_unlock_irqrestore(&bnad->bna_lock, flags); |
| 1177 | |
| 1178 | if (cfg_flags & BNAD_CF_MSIX) { |
| 1179 | intr_info->intr_type = BNA_INTR_T_MSIX; |
| 1180 | intr_info->idl = kcalloc(intr_info->num, |
| 1181 | sizeof(struct bna_intr_descr), |
| 1182 | GFP_KERNEL); |
| 1183 | if (!intr_info->idl) |
| 1184 | return -ENOMEM; |
| 1185 | |
| 1186 | switch (src) { |
| 1187 | case BNAD_INTR_TX: |
| 1188 | vector_start = txrx_id; |
| 1189 | break; |
| 1190 | |
| 1191 | case BNAD_INTR_RX: |
| 1192 | vector_start = bnad->num_tx * bnad->num_txq_per_tx + |
| 1193 | txrx_id; |
| 1194 | break; |
| 1195 | |
| 1196 | default: |
| 1197 | BUG(); |
| 1198 | } |
| 1199 | |
| 1200 | for (i = 0; i < intr_info->num; i++) |
| 1201 | intr_info->idl[i].vector = vector_start + i; |
| 1202 | } else { |
| 1203 | intr_info->intr_type = BNA_INTR_T_INTX; |
| 1204 | intr_info->num = 1; |
| 1205 | intr_info->idl = kcalloc(intr_info->num, |
| 1206 | sizeof(struct bna_intr_descr), |
| 1207 | GFP_KERNEL); |
| 1208 | if (!intr_info->idl) |
| 1209 | return -ENOMEM; |
| 1210 | |
| 1211 | switch (src) { |
| 1212 | case BNAD_INTR_TX: |
| 1213 | intr_info->idl[0].vector = 0x1; /* Bit mask : Tx IB */ |
| 1214 | break; |
| 1215 | |
| 1216 | case BNAD_INTR_RX: |
| 1217 | intr_info->idl[0].vector = 0x2; /* Bit mask : Rx IB */ |
| 1218 | break; |
| 1219 | } |
| 1220 | } |
| 1221 | return 0; |
| 1222 | } |
| 1223 | |
| 1224 | /** |
| 1225 | * NOTE: Should be called for MSIX only |
| 1226 | * Unregisters Tx MSIX vector(s) from the kernel |
| 1227 | */ |
| 1228 | static void |
| 1229 | bnad_tx_msix_unregister(struct bnad *bnad, struct bnad_tx_info *tx_info, |
| 1230 | int num_txqs) |
| 1231 | { |
| 1232 | int i; |
| 1233 | int vector_num; |
| 1234 | |
| 1235 | for (i = 0; i < num_txqs; i++) { |
| 1236 | if (tx_info->tcb[i] == NULL) |
| 1237 | continue; |
| 1238 | |
| 1239 | vector_num = tx_info->tcb[i]->intr_vector; |
| 1240 | free_irq(bnad->msix_table[vector_num].vector, tx_info->tcb[i]); |
| 1241 | } |
| 1242 | } |
| 1243 | |
| 1244 | /** |
| 1245 | * NOTE: Should be called for MSIX only |
| 1246 | * Registers Tx MSIX vector(s) and ISR(s), cookie with the kernel |
| 1247 | */ |
| 1248 | static int |
| 1249 | bnad_tx_msix_register(struct bnad *bnad, struct bnad_tx_info *tx_info, |
| 1250 | uint tx_id, int num_txqs) |
| 1251 | { |
| 1252 | int i; |
| 1253 | int err; |
| 1254 | int vector_num; |
| 1255 | |
| 1256 | for (i = 0; i < num_txqs; i++) { |
| 1257 | vector_num = tx_info->tcb[i]->intr_vector; |
| 1258 | sprintf(tx_info->tcb[i]->name, "%s TXQ %d", bnad->netdev->name, |
| 1259 | tx_id + tx_info->tcb[i]->id); |
| 1260 | err = request_irq(bnad->msix_table[vector_num].vector, |
| 1261 | (irq_handler_t)bnad_msix_tx, 0, |
| 1262 | tx_info->tcb[i]->name, |
| 1263 | tx_info->tcb[i]); |
| 1264 | if (err) |
| 1265 | goto err_return; |
| 1266 | } |
| 1267 | |
| 1268 | return 0; |
| 1269 | |
| 1270 | err_return: |
| 1271 | if (i > 0) |
| 1272 | bnad_tx_msix_unregister(bnad, tx_info, (i - 1)); |
| 1273 | return -1; |
| 1274 | } |
| 1275 | |
| 1276 | /** |
| 1277 | * NOTE: Should be called for MSIX only |
| 1278 | * Unregisters Rx MSIX vector(s) from the kernel |
| 1279 | */ |
| 1280 | static void |
| 1281 | bnad_rx_msix_unregister(struct bnad *bnad, struct bnad_rx_info *rx_info, |
| 1282 | int num_rxps) |
| 1283 | { |
| 1284 | int i; |
| 1285 | int vector_num; |
| 1286 | |
| 1287 | for (i = 0; i < num_rxps; i++) { |
| 1288 | if (rx_info->rx_ctrl[i].ccb == NULL) |
| 1289 | continue; |
| 1290 | |
| 1291 | vector_num = rx_info->rx_ctrl[i].ccb->intr_vector; |
| 1292 | free_irq(bnad->msix_table[vector_num].vector, |
| 1293 | rx_info->rx_ctrl[i].ccb); |
| 1294 | } |
| 1295 | } |
| 1296 | |
| 1297 | /** |
| 1298 | * NOTE: Should be called for MSIX only |
| 1299 | * Registers Tx MSIX vector(s) and ISR(s), cookie with the kernel |
| 1300 | */ |
| 1301 | static int |
| 1302 | bnad_rx_msix_register(struct bnad *bnad, struct bnad_rx_info *rx_info, |
| 1303 | uint rx_id, int num_rxps) |
| 1304 | { |
| 1305 | int i; |
| 1306 | int err; |
| 1307 | int vector_num; |
| 1308 | |
| 1309 | for (i = 0; i < num_rxps; i++) { |
| 1310 | vector_num = rx_info->rx_ctrl[i].ccb->intr_vector; |
| 1311 | sprintf(rx_info->rx_ctrl[i].ccb->name, "%s CQ %d", |
| 1312 | bnad->netdev->name, |
| 1313 | rx_id + rx_info->rx_ctrl[i].ccb->id); |
| 1314 | err = request_irq(bnad->msix_table[vector_num].vector, |
| 1315 | (irq_handler_t)bnad_msix_rx, 0, |
| 1316 | rx_info->rx_ctrl[i].ccb->name, |
| 1317 | rx_info->rx_ctrl[i].ccb); |
| 1318 | if (err) |
| 1319 | goto err_return; |
| 1320 | } |
| 1321 | |
| 1322 | return 0; |
| 1323 | |
| 1324 | err_return: |
| 1325 | if (i > 0) |
| 1326 | bnad_rx_msix_unregister(bnad, rx_info, (i - 1)); |
| 1327 | return -1; |
| 1328 | } |
| 1329 | |
| 1330 | /* Free Tx object Resources */ |
| 1331 | static void |
| 1332 | bnad_tx_res_free(struct bnad *bnad, struct bna_res_info *res_info) |
| 1333 | { |
| 1334 | int i; |
| 1335 | |
| 1336 | for (i = 0; i < BNA_TX_RES_T_MAX; i++) { |
| 1337 | if (res_info[i].res_type == BNA_RES_T_MEM) |
| 1338 | bnad_mem_free(bnad, &res_info[i].res_u.mem_info); |
| 1339 | else if (res_info[i].res_type == BNA_RES_T_INTR) |
| 1340 | bnad_txrx_irq_free(bnad, &res_info[i].res_u.intr_info); |
| 1341 | } |
| 1342 | } |
| 1343 | |
| 1344 | /* Allocates memory and interrupt resources for Tx object */ |
| 1345 | static int |
| 1346 | bnad_tx_res_alloc(struct bnad *bnad, struct bna_res_info *res_info, |
| 1347 | uint tx_id) |
| 1348 | { |
| 1349 | int i, err = 0; |
| 1350 | |
| 1351 | for (i = 0; i < BNA_TX_RES_T_MAX; i++) { |
| 1352 | if (res_info[i].res_type == BNA_RES_T_MEM) |
| 1353 | err = bnad_mem_alloc(bnad, |
| 1354 | &res_info[i].res_u.mem_info); |
| 1355 | else if (res_info[i].res_type == BNA_RES_T_INTR) |
| 1356 | err = bnad_txrx_irq_alloc(bnad, BNAD_INTR_TX, tx_id, |
| 1357 | &res_info[i].res_u.intr_info); |
| 1358 | if (err) |
| 1359 | goto err_return; |
| 1360 | } |
| 1361 | return 0; |
| 1362 | |
| 1363 | err_return: |
| 1364 | bnad_tx_res_free(bnad, res_info); |
| 1365 | return err; |
| 1366 | } |
| 1367 | |
| 1368 | /* Free Rx object Resources */ |
| 1369 | static void |
| 1370 | bnad_rx_res_free(struct bnad *bnad, struct bna_res_info *res_info) |
| 1371 | { |
| 1372 | int i; |
| 1373 | |
| 1374 | for (i = 0; i < BNA_RX_RES_T_MAX; i++) { |
| 1375 | if (res_info[i].res_type == BNA_RES_T_MEM) |
| 1376 | bnad_mem_free(bnad, &res_info[i].res_u.mem_info); |
| 1377 | else if (res_info[i].res_type == BNA_RES_T_INTR) |
| 1378 | bnad_txrx_irq_free(bnad, &res_info[i].res_u.intr_info); |
| 1379 | } |
| 1380 | } |
| 1381 | |
| 1382 | /* Allocates memory and interrupt resources for Rx object */ |
| 1383 | static int |
| 1384 | bnad_rx_res_alloc(struct bnad *bnad, struct bna_res_info *res_info, |
| 1385 | uint rx_id) |
| 1386 | { |
| 1387 | int i, err = 0; |
| 1388 | |
| 1389 | /* All memory needs to be allocated before setup_ccbs */ |
| 1390 | for (i = 0; i < BNA_RX_RES_T_MAX; i++) { |
| 1391 | if (res_info[i].res_type == BNA_RES_T_MEM) |
| 1392 | err = bnad_mem_alloc(bnad, |
| 1393 | &res_info[i].res_u.mem_info); |
| 1394 | else if (res_info[i].res_type == BNA_RES_T_INTR) |
| 1395 | err = bnad_txrx_irq_alloc(bnad, BNAD_INTR_RX, rx_id, |
| 1396 | &res_info[i].res_u.intr_info); |
| 1397 | if (err) |
| 1398 | goto err_return; |
| 1399 | } |
| 1400 | return 0; |
| 1401 | |
| 1402 | err_return: |
| 1403 | bnad_rx_res_free(bnad, res_info); |
| 1404 | return err; |
| 1405 | } |
| 1406 | |
| 1407 | /* Timer callbacks */ |
| 1408 | /* a) IOC timer */ |
| 1409 | static void |
| 1410 | bnad_ioc_timeout(unsigned long data) |
| 1411 | { |
| 1412 | struct bnad *bnad = (struct bnad *)data; |
| 1413 | unsigned long flags; |
| 1414 | |
| 1415 | spin_lock_irqsave(&bnad->bna_lock, flags); |
Rasesh Mody | 8a89142 | 2010-08-25 23:00:27 -0700 | [diff] [blame] | 1416 | bfa_nw_ioc_timeout((void *) &bnad->bna.device.ioc); |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 1417 | spin_unlock_irqrestore(&bnad->bna_lock, flags); |
| 1418 | } |
| 1419 | |
| 1420 | static void |
| 1421 | bnad_ioc_hb_check(unsigned long data) |
| 1422 | { |
| 1423 | struct bnad *bnad = (struct bnad *)data; |
| 1424 | unsigned long flags; |
| 1425 | |
| 1426 | spin_lock_irqsave(&bnad->bna_lock, flags); |
Rasesh Mody | 8a89142 | 2010-08-25 23:00:27 -0700 | [diff] [blame] | 1427 | bfa_nw_ioc_hb_check((void *) &bnad->bna.device.ioc); |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 1428 | spin_unlock_irqrestore(&bnad->bna_lock, flags); |
| 1429 | } |
| 1430 | |
| 1431 | static void |
Rasesh Mody | 1d32f76 | 2010-12-23 21:45:09 +0000 | [diff] [blame] | 1432 | bnad_iocpf_timeout(unsigned long data) |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 1433 | { |
| 1434 | struct bnad *bnad = (struct bnad *)data; |
| 1435 | unsigned long flags; |
| 1436 | |
| 1437 | spin_lock_irqsave(&bnad->bna_lock, flags); |
Rasesh Mody | 1d32f76 | 2010-12-23 21:45:09 +0000 | [diff] [blame] | 1438 | bfa_nw_iocpf_timeout((void *) &bnad->bna.device.ioc); |
| 1439 | spin_unlock_irqrestore(&bnad->bna_lock, flags); |
| 1440 | } |
| 1441 | |
| 1442 | static void |
| 1443 | bnad_iocpf_sem_timeout(unsigned long data) |
| 1444 | { |
| 1445 | struct bnad *bnad = (struct bnad *)data; |
| 1446 | unsigned long flags; |
| 1447 | |
| 1448 | spin_lock_irqsave(&bnad->bna_lock, flags); |
| 1449 | bfa_nw_iocpf_sem_timeout((void *) &bnad->bna.device.ioc); |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 1450 | spin_unlock_irqrestore(&bnad->bna_lock, flags); |
| 1451 | } |
| 1452 | |
| 1453 | /* |
| 1454 | * All timer routines use bnad->bna_lock to protect against |
| 1455 | * the following race, which may occur in case of no locking: |
| 1456 | * Time CPU m CPU n |
| 1457 | * 0 1 = test_bit |
| 1458 | * 1 clear_bit |
| 1459 | * 2 del_timer_sync |
| 1460 | * 3 mod_timer |
| 1461 | */ |
| 1462 | |
| 1463 | /* b) Dynamic Interrupt Moderation Timer */ |
| 1464 | static void |
| 1465 | bnad_dim_timeout(unsigned long data) |
| 1466 | { |
| 1467 | struct bnad *bnad = (struct bnad *)data; |
| 1468 | struct bnad_rx_info *rx_info; |
| 1469 | struct bnad_rx_ctrl *rx_ctrl; |
| 1470 | int i, j; |
| 1471 | unsigned long flags; |
| 1472 | |
| 1473 | if (!netif_carrier_ok(bnad->netdev)) |
| 1474 | return; |
| 1475 | |
| 1476 | spin_lock_irqsave(&bnad->bna_lock, flags); |
| 1477 | for (i = 0; i < bnad->num_rx; i++) { |
| 1478 | rx_info = &bnad->rx_info[i]; |
| 1479 | if (!rx_info->rx) |
| 1480 | continue; |
| 1481 | for (j = 0; j < bnad->num_rxp_per_rx; j++) { |
| 1482 | rx_ctrl = &rx_info->rx_ctrl[j]; |
| 1483 | if (!rx_ctrl->ccb) |
| 1484 | continue; |
| 1485 | bna_rx_dim_update(rx_ctrl->ccb); |
| 1486 | } |
| 1487 | } |
| 1488 | |
| 1489 | /* Check for BNAD_CF_DIM_ENABLED, does not eleminate a race */ |
| 1490 | if (test_bit(BNAD_RF_DIM_TIMER_RUNNING, &bnad->run_flags)) |
| 1491 | mod_timer(&bnad->dim_timer, |
| 1492 | jiffies + msecs_to_jiffies(BNAD_DIM_TIMER_FREQ)); |
| 1493 | spin_unlock_irqrestore(&bnad->bna_lock, flags); |
| 1494 | } |
| 1495 | |
| 1496 | /* c) Statistics Timer */ |
| 1497 | static void |
| 1498 | bnad_stats_timeout(unsigned long data) |
| 1499 | { |
| 1500 | struct bnad *bnad = (struct bnad *)data; |
| 1501 | unsigned long flags; |
| 1502 | |
| 1503 | if (!netif_running(bnad->netdev) || |
| 1504 | !test_bit(BNAD_RF_STATS_TIMER_RUNNING, &bnad->run_flags)) |
| 1505 | return; |
| 1506 | |
| 1507 | spin_lock_irqsave(&bnad->bna_lock, flags); |
| 1508 | bna_stats_get(&bnad->bna); |
| 1509 | spin_unlock_irqrestore(&bnad->bna_lock, flags); |
| 1510 | } |
| 1511 | |
| 1512 | /* |
| 1513 | * Set up timer for DIM |
| 1514 | * Called with bnad->bna_lock held |
| 1515 | */ |
| 1516 | void |
| 1517 | bnad_dim_timer_start(struct bnad *bnad) |
| 1518 | { |
| 1519 | if (bnad->cfg_flags & BNAD_CF_DIM_ENABLED && |
| 1520 | !test_bit(BNAD_RF_DIM_TIMER_RUNNING, &bnad->run_flags)) { |
| 1521 | setup_timer(&bnad->dim_timer, bnad_dim_timeout, |
| 1522 | (unsigned long)bnad); |
| 1523 | set_bit(BNAD_RF_DIM_TIMER_RUNNING, &bnad->run_flags); |
| 1524 | mod_timer(&bnad->dim_timer, |
| 1525 | jiffies + msecs_to_jiffies(BNAD_DIM_TIMER_FREQ)); |
| 1526 | } |
| 1527 | } |
| 1528 | |
| 1529 | /* |
| 1530 | * Set up timer for statistics |
| 1531 | * Called with mutex_lock(&bnad->conf_mutex) held |
| 1532 | */ |
| 1533 | static void |
| 1534 | bnad_stats_timer_start(struct bnad *bnad) |
| 1535 | { |
| 1536 | unsigned long flags; |
| 1537 | |
| 1538 | spin_lock_irqsave(&bnad->bna_lock, flags); |
| 1539 | if (!test_and_set_bit(BNAD_RF_STATS_TIMER_RUNNING, &bnad->run_flags)) { |
| 1540 | setup_timer(&bnad->stats_timer, bnad_stats_timeout, |
| 1541 | (unsigned long)bnad); |
| 1542 | mod_timer(&bnad->stats_timer, |
| 1543 | jiffies + msecs_to_jiffies(BNAD_STATS_TIMER_FREQ)); |
| 1544 | } |
| 1545 | spin_unlock_irqrestore(&bnad->bna_lock, flags); |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 1546 | } |
| 1547 | |
| 1548 | /* |
| 1549 | * Stops the stats timer |
| 1550 | * Called with mutex_lock(&bnad->conf_mutex) held |
| 1551 | */ |
| 1552 | static void |
| 1553 | bnad_stats_timer_stop(struct bnad *bnad) |
| 1554 | { |
| 1555 | int to_del = 0; |
| 1556 | unsigned long flags; |
| 1557 | |
| 1558 | spin_lock_irqsave(&bnad->bna_lock, flags); |
| 1559 | if (test_and_clear_bit(BNAD_RF_STATS_TIMER_RUNNING, &bnad->run_flags)) |
| 1560 | to_del = 1; |
| 1561 | spin_unlock_irqrestore(&bnad->bna_lock, flags); |
| 1562 | if (to_del) |
| 1563 | del_timer_sync(&bnad->stats_timer); |
| 1564 | } |
| 1565 | |
| 1566 | /* Utilities */ |
| 1567 | |
| 1568 | static void |
| 1569 | bnad_netdev_mc_list_get(struct net_device *netdev, u8 *mc_list) |
| 1570 | { |
| 1571 | int i = 1; /* Index 0 has broadcast address */ |
| 1572 | struct netdev_hw_addr *mc_addr; |
| 1573 | |
| 1574 | netdev_for_each_mc_addr(mc_addr, netdev) { |
| 1575 | memcpy(&mc_list[i * ETH_ALEN], &mc_addr->addr[0], |
| 1576 | ETH_ALEN); |
| 1577 | i++; |
| 1578 | } |
| 1579 | } |
| 1580 | |
| 1581 | static int |
| 1582 | bnad_napi_poll_rx(struct napi_struct *napi, int budget) |
| 1583 | { |
| 1584 | struct bnad_rx_ctrl *rx_ctrl = |
| 1585 | container_of(napi, struct bnad_rx_ctrl, napi); |
| 1586 | struct bna_ccb *ccb; |
| 1587 | struct bnad *bnad; |
| 1588 | int rcvd = 0; |
| 1589 | |
| 1590 | ccb = rx_ctrl->ccb; |
| 1591 | |
| 1592 | bnad = ccb->bnad; |
| 1593 | |
| 1594 | if (!netif_carrier_ok(bnad->netdev)) |
| 1595 | goto poll_exit; |
| 1596 | |
| 1597 | rcvd = bnad_poll_cq(bnad, ccb, budget); |
| 1598 | if (rcvd == budget) |
| 1599 | return rcvd; |
| 1600 | |
| 1601 | poll_exit: |
| 1602 | napi_complete((napi)); |
| 1603 | |
| 1604 | BNAD_UPDATE_CTR(bnad, netif_rx_complete); |
| 1605 | |
| 1606 | bnad_enable_rx_irq(bnad, ccb); |
| 1607 | return rcvd; |
| 1608 | } |
| 1609 | |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 1610 | static void |
| 1611 | bnad_napi_enable(struct bnad *bnad, u32 rx_id) |
| 1612 | { |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 1613 | struct bnad_rx_ctrl *rx_ctrl; |
| 1614 | int i; |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 1615 | |
| 1616 | /* Initialize & enable NAPI */ |
| 1617 | for (i = 0; i < bnad->num_rxp_per_rx; i++) { |
| 1618 | rx_ctrl = &bnad->rx_info[rx_id].rx_ctrl[i]; |
Rasesh Mody | be7fa32 | 2010-12-23 21:45:01 +0000 | [diff] [blame] | 1619 | |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 1620 | netif_napi_add(bnad->netdev, &rx_ctrl->napi, |
Rasesh Mody | be7fa32 | 2010-12-23 21:45:01 +0000 | [diff] [blame] | 1621 | bnad_napi_poll_rx, 64); |
| 1622 | |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 1623 | napi_enable(&rx_ctrl->napi); |
| 1624 | } |
| 1625 | } |
| 1626 | |
| 1627 | static void |
| 1628 | bnad_napi_disable(struct bnad *bnad, u32 rx_id) |
| 1629 | { |
| 1630 | int i; |
| 1631 | |
| 1632 | /* First disable and then clean up */ |
| 1633 | for (i = 0; i < bnad->num_rxp_per_rx; i++) { |
| 1634 | napi_disable(&bnad->rx_info[rx_id].rx_ctrl[i].napi); |
| 1635 | netif_napi_del(&bnad->rx_info[rx_id].rx_ctrl[i].napi); |
| 1636 | } |
| 1637 | } |
| 1638 | |
| 1639 | /* Should be held with conf_lock held */ |
| 1640 | void |
| 1641 | bnad_cleanup_tx(struct bnad *bnad, uint tx_id) |
| 1642 | { |
| 1643 | struct bnad_tx_info *tx_info = &bnad->tx_info[tx_id]; |
| 1644 | struct bna_res_info *res_info = &bnad->tx_res_info[tx_id].res_info[0]; |
| 1645 | unsigned long flags; |
| 1646 | |
| 1647 | if (!tx_info->tx) |
| 1648 | return; |
| 1649 | |
| 1650 | init_completion(&bnad->bnad_completions.tx_comp); |
| 1651 | spin_lock_irqsave(&bnad->bna_lock, flags); |
| 1652 | bna_tx_disable(tx_info->tx, BNA_HARD_CLEANUP, bnad_cb_tx_disabled); |
| 1653 | spin_unlock_irqrestore(&bnad->bna_lock, flags); |
| 1654 | wait_for_completion(&bnad->bnad_completions.tx_comp); |
| 1655 | |
| 1656 | if (tx_info->tcb[0]->intr_type == BNA_INTR_T_MSIX) |
| 1657 | bnad_tx_msix_unregister(bnad, tx_info, |
| 1658 | bnad->num_txq_per_tx); |
| 1659 | |
| 1660 | spin_lock_irqsave(&bnad->bna_lock, flags); |
| 1661 | bna_tx_destroy(tx_info->tx); |
| 1662 | spin_unlock_irqrestore(&bnad->bna_lock, flags); |
| 1663 | |
| 1664 | tx_info->tx = NULL; |
| 1665 | |
| 1666 | if (0 == tx_id) |
| 1667 | tasklet_kill(&bnad->tx_free_tasklet); |
| 1668 | |
| 1669 | bnad_tx_res_free(bnad, res_info); |
| 1670 | } |
| 1671 | |
| 1672 | /* Should be held with conf_lock held */ |
| 1673 | int |
| 1674 | bnad_setup_tx(struct bnad *bnad, uint tx_id) |
| 1675 | { |
| 1676 | int err; |
| 1677 | struct bnad_tx_info *tx_info = &bnad->tx_info[tx_id]; |
| 1678 | struct bna_res_info *res_info = &bnad->tx_res_info[tx_id].res_info[0]; |
| 1679 | struct bna_intr_info *intr_info = |
| 1680 | &res_info[BNA_TX_RES_INTR_T_TXCMPL].res_u.intr_info; |
| 1681 | struct bna_tx_config *tx_config = &bnad->tx_config[tx_id]; |
| 1682 | struct bna_tx_event_cbfn tx_cbfn; |
| 1683 | struct bna_tx *tx; |
| 1684 | unsigned long flags; |
| 1685 | |
| 1686 | /* Initialize the Tx object configuration */ |
| 1687 | tx_config->num_txq = bnad->num_txq_per_tx; |
| 1688 | tx_config->txq_depth = bnad->txq_depth; |
| 1689 | tx_config->tx_type = BNA_TX_T_REGULAR; |
| 1690 | |
| 1691 | /* Initialize the tx event handlers */ |
| 1692 | tx_cbfn.tcb_setup_cbfn = bnad_cb_tcb_setup; |
| 1693 | tx_cbfn.tcb_destroy_cbfn = bnad_cb_tcb_destroy; |
| 1694 | tx_cbfn.tx_stall_cbfn = bnad_cb_tx_stall; |
| 1695 | tx_cbfn.tx_resume_cbfn = bnad_cb_tx_resume; |
| 1696 | tx_cbfn.tx_cleanup_cbfn = bnad_cb_tx_cleanup; |
| 1697 | |
| 1698 | /* Get BNA's resource requirement for one tx object */ |
| 1699 | spin_lock_irqsave(&bnad->bna_lock, flags); |
| 1700 | bna_tx_res_req(bnad->num_txq_per_tx, |
| 1701 | bnad->txq_depth, res_info); |
| 1702 | spin_unlock_irqrestore(&bnad->bna_lock, flags); |
| 1703 | |
| 1704 | /* Fill Unmap Q memory requirements */ |
| 1705 | BNAD_FILL_UNMAPQ_MEM_REQ( |
| 1706 | &res_info[BNA_TX_RES_MEM_T_UNMAPQ], |
| 1707 | bnad->num_txq_per_tx, |
| 1708 | BNAD_TX_UNMAPQ_DEPTH); |
| 1709 | |
| 1710 | /* Allocate resources */ |
| 1711 | err = bnad_tx_res_alloc(bnad, res_info, tx_id); |
| 1712 | if (err) |
| 1713 | return err; |
| 1714 | |
| 1715 | /* Ask BNA to create one Tx object, supplying required resources */ |
| 1716 | spin_lock_irqsave(&bnad->bna_lock, flags); |
| 1717 | tx = bna_tx_create(&bnad->bna, bnad, tx_config, &tx_cbfn, res_info, |
| 1718 | tx_info); |
| 1719 | spin_unlock_irqrestore(&bnad->bna_lock, flags); |
| 1720 | if (!tx) |
| 1721 | goto err_return; |
| 1722 | tx_info->tx = tx; |
| 1723 | |
| 1724 | /* Register ISR for the Tx object */ |
| 1725 | if (intr_info->intr_type == BNA_INTR_T_MSIX) { |
| 1726 | err = bnad_tx_msix_register(bnad, tx_info, |
| 1727 | tx_id, bnad->num_txq_per_tx); |
| 1728 | if (err) |
| 1729 | goto err_return; |
| 1730 | } |
| 1731 | |
| 1732 | spin_lock_irqsave(&bnad->bna_lock, flags); |
| 1733 | bna_tx_enable(tx); |
| 1734 | spin_unlock_irqrestore(&bnad->bna_lock, flags); |
| 1735 | |
| 1736 | return 0; |
| 1737 | |
| 1738 | err_return: |
| 1739 | bnad_tx_res_free(bnad, res_info); |
| 1740 | return err; |
| 1741 | } |
| 1742 | |
| 1743 | /* Setup the rx config for bna_rx_create */ |
| 1744 | /* bnad decides the configuration */ |
| 1745 | static void |
| 1746 | bnad_init_rx_config(struct bnad *bnad, struct bna_rx_config *rx_config) |
| 1747 | { |
| 1748 | rx_config->rx_type = BNA_RX_T_REGULAR; |
| 1749 | rx_config->num_paths = bnad->num_rxp_per_rx; |
| 1750 | |
| 1751 | if (bnad->num_rxp_per_rx > 1) { |
| 1752 | rx_config->rss_status = BNA_STATUS_T_ENABLED; |
| 1753 | rx_config->rss_config.hash_type = |
| 1754 | (BFI_RSS_T_V4_TCP | |
| 1755 | BFI_RSS_T_V6_TCP | |
| 1756 | BFI_RSS_T_V4_IP | |
| 1757 | BFI_RSS_T_V6_IP); |
| 1758 | rx_config->rss_config.hash_mask = |
| 1759 | bnad->num_rxp_per_rx - 1; |
| 1760 | get_random_bytes(rx_config->rss_config.toeplitz_hash_key, |
| 1761 | sizeof(rx_config->rss_config.toeplitz_hash_key)); |
| 1762 | } else { |
| 1763 | rx_config->rss_status = BNA_STATUS_T_DISABLED; |
| 1764 | memset(&rx_config->rss_config, 0, |
| 1765 | sizeof(rx_config->rss_config)); |
| 1766 | } |
| 1767 | rx_config->rxp_type = BNA_RXP_SLR; |
| 1768 | rx_config->q_depth = bnad->rxq_depth; |
| 1769 | |
| 1770 | rx_config->small_buff_size = BFI_SMALL_RXBUF_SIZE; |
| 1771 | |
| 1772 | rx_config->vlan_strip_status = BNA_STATUS_T_ENABLED; |
| 1773 | } |
| 1774 | |
| 1775 | /* Called with mutex_lock(&bnad->conf_mutex) held */ |
| 1776 | void |
| 1777 | bnad_cleanup_rx(struct bnad *bnad, uint rx_id) |
| 1778 | { |
| 1779 | struct bnad_rx_info *rx_info = &bnad->rx_info[rx_id]; |
| 1780 | struct bna_rx_config *rx_config = &bnad->rx_config[rx_id]; |
| 1781 | struct bna_res_info *res_info = &bnad->rx_res_info[rx_id].res_info[0]; |
| 1782 | unsigned long flags; |
| 1783 | int dim_timer_del = 0; |
| 1784 | |
| 1785 | if (!rx_info->rx) |
| 1786 | return; |
| 1787 | |
| 1788 | if (0 == rx_id) { |
| 1789 | spin_lock_irqsave(&bnad->bna_lock, flags); |
| 1790 | dim_timer_del = bnad_dim_timer_running(bnad); |
| 1791 | if (dim_timer_del) |
| 1792 | clear_bit(BNAD_RF_DIM_TIMER_RUNNING, &bnad->run_flags); |
| 1793 | spin_unlock_irqrestore(&bnad->bna_lock, flags); |
| 1794 | if (dim_timer_del) |
| 1795 | del_timer_sync(&bnad->dim_timer); |
| 1796 | } |
| 1797 | |
| 1798 | bnad_napi_disable(bnad, rx_id); |
| 1799 | |
| 1800 | init_completion(&bnad->bnad_completions.rx_comp); |
| 1801 | spin_lock_irqsave(&bnad->bna_lock, flags); |
| 1802 | bna_rx_disable(rx_info->rx, BNA_HARD_CLEANUP, bnad_cb_rx_disabled); |
| 1803 | spin_unlock_irqrestore(&bnad->bna_lock, flags); |
| 1804 | wait_for_completion(&bnad->bnad_completions.rx_comp); |
| 1805 | |
| 1806 | if (rx_info->rx_ctrl[0].ccb->intr_type == BNA_INTR_T_MSIX) |
| 1807 | bnad_rx_msix_unregister(bnad, rx_info, rx_config->num_paths); |
| 1808 | |
| 1809 | spin_lock_irqsave(&bnad->bna_lock, flags); |
| 1810 | bna_rx_destroy(rx_info->rx); |
| 1811 | spin_unlock_irqrestore(&bnad->bna_lock, flags); |
| 1812 | |
| 1813 | rx_info->rx = NULL; |
| 1814 | |
| 1815 | bnad_rx_res_free(bnad, res_info); |
| 1816 | } |
| 1817 | |
| 1818 | /* Called with mutex_lock(&bnad->conf_mutex) held */ |
| 1819 | int |
| 1820 | bnad_setup_rx(struct bnad *bnad, uint rx_id) |
| 1821 | { |
| 1822 | int err; |
| 1823 | struct bnad_rx_info *rx_info = &bnad->rx_info[rx_id]; |
| 1824 | struct bna_res_info *res_info = &bnad->rx_res_info[rx_id].res_info[0]; |
| 1825 | struct bna_intr_info *intr_info = |
| 1826 | &res_info[BNA_RX_RES_T_INTR].res_u.intr_info; |
| 1827 | struct bna_rx_config *rx_config = &bnad->rx_config[rx_id]; |
| 1828 | struct bna_rx_event_cbfn rx_cbfn; |
| 1829 | struct bna_rx *rx; |
| 1830 | unsigned long flags; |
| 1831 | |
| 1832 | /* Initialize the Rx object configuration */ |
| 1833 | bnad_init_rx_config(bnad, rx_config); |
| 1834 | |
| 1835 | /* Initialize the Rx event handlers */ |
| 1836 | rx_cbfn.rcb_setup_cbfn = bnad_cb_rcb_setup; |
Rasesh Mody | be7fa32 | 2010-12-23 21:45:01 +0000 | [diff] [blame] | 1837 | rx_cbfn.rcb_destroy_cbfn = bnad_cb_rcb_destroy; |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 1838 | rx_cbfn.ccb_setup_cbfn = bnad_cb_ccb_setup; |
| 1839 | rx_cbfn.ccb_destroy_cbfn = bnad_cb_ccb_destroy; |
| 1840 | rx_cbfn.rx_cleanup_cbfn = bnad_cb_rx_cleanup; |
| 1841 | rx_cbfn.rx_post_cbfn = bnad_cb_rx_post; |
| 1842 | |
| 1843 | /* Get BNA's resource requirement for one Rx object */ |
| 1844 | spin_lock_irqsave(&bnad->bna_lock, flags); |
| 1845 | bna_rx_res_req(rx_config, res_info); |
| 1846 | spin_unlock_irqrestore(&bnad->bna_lock, flags); |
| 1847 | |
| 1848 | /* Fill Unmap Q memory requirements */ |
| 1849 | BNAD_FILL_UNMAPQ_MEM_REQ( |
| 1850 | &res_info[BNA_RX_RES_MEM_T_UNMAPQ], |
| 1851 | rx_config->num_paths + |
| 1852 | ((rx_config->rxp_type == BNA_RXP_SINGLE) ? 0 : |
| 1853 | rx_config->num_paths), BNAD_RX_UNMAPQ_DEPTH); |
| 1854 | |
| 1855 | /* Allocate resource */ |
| 1856 | err = bnad_rx_res_alloc(bnad, res_info, rx_id); |
| 1857 | if (err) |
| 1858 | return err; |
| 1859 | |
| 1860 | /* Ask BNA to create one Rx object, supplying required resources */ |
| 1861 | spin_lock_irqsave(&bnad->bna_lock, flags); |
| 1862 | rx = bna_rx_create(&bnad->bna, bnad, rx_config, &rx_cbfn, res_info, |
| 1863 | rx_info); |
| 1864 | spin_unlock_irqrestore(&bnad->bna_lock, flags); |
| 1865 | if (!rx) |
| 1866 | goto err_return; |
| 1867 | rx_info->rx = rx; |
| 1868 | |
| 1869 | /* Register ISR for the Rx object */ |
| 1870 | if (intr_info->intr_type == BNA_INTR_T_MSIX) { |
| 1871 | err = bnad_rx_msix_register(bnad, rx_info, rx_id, |
| 1872 | rx_config->num_paths); |
| 1873 | if (err) |
| 1874 | goto err_return; |
| 1875 | } |
| 1876 | |
| 1877 | /* Enable NAPI */ |
| 1878 | bnad_napi_enable(bnad, rx_id); |
| 1879 | |
| 1880 | spin_lock_irqsave(&bnad->bna_lock, flags); |
| 1881 | if (0 == rx_id) { |
| 1882 | /* Set up Dynamic Interrupt Moderation Vector */ |
| 1883 | if (bnad->cfg_flags & BNAD_CF_DIM_ENABLED) |
| 1884 | bna_rx_dim_reconfig(&bnad->bna, bna_napi_dim_vector); |
| 1885 | |
| 1886 | /* Enable VLAN filtering only on the default Rx */ |
| 1887 | bna_rx_vlanfilter_enable(rx); |
| 1888 | |
| 1889 | /* Start the DIM timer */ |
| 1890 | bnad_dim_timer_start(bnad); |
| 1891 | } |
| 1892 | |
| 1893 | bna_rx_enable(rx); |
| 1894 | spin_unlock_irqrestore(&bnad->bna_lock, flags); |
| 1895 | |
| 1896 | return 0; |
| 1897 | |
| 1898 | err_return: |
| 1899 | bnad_cleanup_rx(bnad, rx_id); |
| 1900 | return err; |
| 1901 | } |
| 1902 | |
| 1903 | /* Called with conf_lock & bnad->bna_lock held */ |
| 1904 | void |
| 1905 | bnad_tx_coalescing_timeo_set(struct bnad *bnad) |
| 1906 | { |
| 1907 | struct bnad_tx_info *tx_info; |
| 1908 | |
| 1909 | tx_info = &bnad->tx_info[0]; |
| 1910 | if (!tx_info->tx) |
| 1911 | return; |
| 1912 | |
| 1913 | bna_tx_coalescing_timeo_set(tx_info->tx, bnad->tx_coalescing_timeo); |
| 1914 | } |
| 1915 | |
| 1916 | /* Called with conf_lock & bnad->bna_lock held */ |
| 1917 | void |
| 1918 | bnad_rx_coalescing_timeo_set(struct bnad *bnad) |
| 1919 | { |
| 1920 | struct bnad_rx_info *rx_info; |
| 1921 | int i; |
| 1922 | |
| 1923 | for (i = 0; i < bnad->num_rx; i++) { |
| 1924 | rx_info = &bnad->rx_info[i]; |
| 1925 | if (!rx_info->rx) |
| 1926 | continue; |
| 1927 | bna_rx_coalescing_timeo_set(rx_info->rx, |
| 1928 | bnad->rx_coalescing_timeo); |
| 1929 | } |
| 1930 | } |
| 1931 | |
| 1932 | /* |
| 1933 | * Called with bnad->bna_lock held |
| 1934 | */ |
| 1935 | static int |
| 1936 | bnad_mac_addr_set_locked(struct bnad *bnad, u8 *mac_addr) |
| 1937 | { |
| 1938 | int ret; |
| 1939 | |
| 1940 | if (!is_valid_ether_addr(mac_addr)) |
| 1941 | return -EADDRNOTAVAIL; |
| 1942 | |
| 1943 | /* If datapath is down, pretend everything went through */ |
| 1944 | if (!bnad->rx_info[0].rx) |
| 1945 | return 0; |
| 1946 | |
| 1947 | ret = bna_rx_ucast_set(bnad->rx_info[0].rx, mac_addr, NULL); |
| 1948 | if (ret != BNA_CB_SUCCESS) |
| 1949 | return -EADDRNOTAVAIL; |
| 1950 | |
| 1951 | return 0; |
| 1952 | } |
| 1953 | |
| 1954 | /* Should be called with conf_lock held */ |
| 1955 | static int |
| 1956 | bnad_enable_default_bcast(struct bnad *bnad) |
| 1957 | { |
| 1958 | struct bnad_rx_info *rx_info = &bnad->rx_info[0]; |
| 1959 | int ret; |
| 1960 | unsigned long flags; |
| 1961 | |
| 1962 | init_completion(&bnad->bnad_completions.mcast_comp); |
| 1963 | |
| 1964 | spin_lock_irqsave(&bnad->bna_lock, flags); |
| 1965 | ret = bna_rx_mcast_add(rx_info->rx, (u8 *)bnad_bcast_addr, |
| 1966 | bnad_cb_rx_mcast_add); |
| 1967 | spin_unlock_irqrestore(&bnad->bna_lock, flags); |
| 1968 | |
| 1969 | if (ret == BNA_CB_SUCCESS) |
| 1970 | wait_for_completion(&bnad->bnad_completions.mcast_comp); |
| 1971 | else |
| 1972 | return -ENODEV; |
| 1973 | |
| 1974 | if (bnad->bnad_completions.mcast_comp_status != BNA_CB_SUCCESS) |
| 1975 | return -ENODEV; |
| 1976 | |
| 1977 | return 0; |
| 1978 | } |
| 1979 | |
Rasesh Mody | aad75b6 | 2010-12-23 21:45:08 +0000 | [diff] [blame] | 1980 | /* Called with bnad_conf_lock() held */ |
| 1981 | static void |
| 1982 | bnad_restore_vlans(struct bnad *bnad, u32 rx_id) |
| 1983 | { |
| 1984 | u16 vlan_id; |
| 1985 | unsigned long flags; |
| 1986 | |
| 1987 | if (!bnad->vlan_grp) |
| 1988 | return; |
| 1989 | |
| 1990 | BUG_ON(!(VLAN_N_VID == (BFI_MAX_VLAN + 1))); |
| 1991 | |
| 1992 | for (vlan_id = 0; vlan_id < VLAN_N_VID; vlan_id++) { |
| 1993 | if (!vlan_group_get_device(bnad->vlan_grp, vlan_id)) |
| 1994 | continue; |
| 1995 | spin_lock_irqsave(&bnad->bna_lock, flags); |
| 1996 | bna_rx_vlan_add(bnad->rx_info[rx_id].rx, vlan_id); |
| 1997 | spin_unlock_irqrestore(&bnad->bna_lock, flags); |
| 1998 | } |
| 1999 | } |
| 2000 | |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 2001 | /* Statistics utilities */ |
| 2002 | void |
Eric Dumazet | 250e061 | 2010-09-02 12:45:02 -0700 | [diff] [blame] | 2003 | bnad_netdev_qstats_fill(struct bnad *bnad, struct rtnl_link_stats64 *stats) |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 2004 | { |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 2005 | int i, j; |
| 2006 | |
| 2007 | for (i = 0; i < bnad->num_rx; i++) { |
| 2008 | for (j = 0; j < bnad->num_rxp_per_rx; j++) { |
| 2009 | if (bnad->rx_info[i].rx_ctrl[j].ccb) { |
Eric Dumazet | 250e061 | 2010-09-02 12:45:02 -0700 | [diff] [blame] | 2010 | stats->rx_packets += bnad->rx_info[i]. |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 2011 | rx_ctrl[j].ccb->rcb[0]->rxq->rx_packets; |
Eric Dumazet | 250e061 | 2010-09-02 12:45:02 -0700 | [diff] [blame] | 2012 | stats->rx_bytes += bnad->rx_info[i]. |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 2013 | rx_ctrl[j].ccb->rcb[0]->rxq->rx_bytes; |
| 2014 | if (bnad->rx_info[i].rx_ctrl[j].ccb->rcb[1] && |
| 2015 | bnad->rx_info[i].rx_ctrl[j].ccb-> |
| 2016 | rcb[1]->rxq) { |
Eric Dumazet | 250e061 | 2010-09-02 12:45:02 -0700 | [diff] [blame] | 2017 | stats->rx_packets += |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 2018 | bnad->rx_info[i].rx_ctrl[j]. |
| 2019 | ccb->rcb[1]->rxq->rx_packets; |
Eric Dumazet | 250e061 | 2010-09-02 12:45:02 -0700 | [diff] [blame] | 2020 | stats->rx_bytes += |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 2021 | bnad->rx_info[i].rx_ctrl[j]. |
| 2022 | ccb->rcb[1]->rxq->rx_bytes; |
| 2023 | } |
| 2024 | } |
| 2025 | } |
| 2026 | } |
| 2027 | for (i = 0; i < bnad->num_tx; i++) { |
| 2028 | for (j = 0; j < bnad->num_txq_per_tx; j++) { |
| 2029 | if (bnad->tx_info[i].tcb[j]) { |
Eric Dumazet | 250e061 | 2010-09-02 12:45:02 -0700 | [diff] [blame] | 2030 | stats->tx_packets += |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 2031 | bnad->tx_info[i].tcb[j]->txq->tx_packets; |
Eric Dumazet | 250e061 | 2010-09-02 12:45:02 -0700 | [diff] [blame] | 2032 | stats->tx_bytes += |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 2033 | bnad->tx_info[i].tcb[j]->txq->tx_bytes; |
| 2034 | } |
| 2035 | } |
| 2036 | } |
| 2037 | } |
| 2038 | |
| 2039 | /* |
| 2040 | * Must be called with the bna_lock held. |
| 2041 | */ |
| 2042 | void |
Eric Dumazet | 250e061 | 2010-09-02 12:45:02 -0700 | [diff] [blame] | 2043 | bnad_netdev_hwstats_fill(struct bnad *bnad, struct rtnl_link_stats64 *stats) |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 2044 | { |
| 2045 | struct bfi_ll_stats_mac *mac_stats; |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 2046 | u64 bmap; |
| 2047 | int i; |
| 2048 | |
| 2049 | mac_stats = &bnad->stats.bna_stats->hw_stats->mac_stats; |
Eric Dumazet | 250e061 | 2010-09-02 12:45:02 -0700 | [diff] [blame] | 2050 | stats->rx_errors = |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 2051 | mac_stats->rx_fcs_error + mac_stats->rx_alignment_error + |
| 2052 | mac_stats->rx_frame_length_error + mac_stats->rx_code_error + |
| 2053 | mac_stats->rx_undersize; |
Eric Dumazet | 250e061 | 2010-09-02 12:45:02 -0700 | [diff] [blame] | 2054 | stats->tx_errors = mac_stats->tx_fcs_error + |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 2055 | mac_stats->tx_undersize; |
Eric Dumazet | 250e061 | 2010-09-02 12:45:02 -0700 | [diff] [blame] | 2056 | stats->rx_dropped = mac_stats->rx_drop; |
| 2057 | stats->tx_dropped = mac_stats->tx_drop; |
| 2058 | stats->multicast = mac_stats->rx_multicast; |
| 2059 | stats->collisions = mac_stats->tx_total_collision; |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 2060 | |
Eric Dumazet | 250e061 | 2010-09-02 12:45:02 -0700 | [diff] [blame] | 2061 | stats->rx_length_errors = mac_stats->rx_frame_length_error; |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 2062 | |
| 2063 | /* receive ring buffer overflow ?? */ |
| 2064 | |
Eric Dumazet | 250e061 | 2010-09-02 12:45:02 -0700 | [diff] [blame] | 2065 | stats->rx_crc_errors = mac_stats->rx_fcs_error; |
| 2066 | stats->rx_frame_errors = mac_stats->rx_alignment_error; |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 2067 | /* recv'r fifo overrun */ |
| 2068 | bmap = (u64)bnad->stats.bna_stats->rxf_bmap[0] | |
| 2069 | ((u64)bnad->stats.bna_stats->rxf_bmap[1] << 32); |
| 2070 | for (i = 0; bmap && (i < BFI_LL_RXF_ID_MAX); i++) { |
| 2071 | if (bmap & 1) { |
Eric Dumazet | 250e061 | 2010-09-02 12:45:02 -0700 | [diff] [blame] | 2072 | stats->rx_fifo_errors += |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 2073 | bnad->stats.bna_stats-> |
| 2074 | hw_stats->rxf_stats[i].frame_drops; |
| 2075 | break; |
| 2076 | } |
| 2077 | bmap >>= 1; |
| 2078 | } |
| 2079 | } |
| 2080 | |
| 2081 | static void |
| 2082 | bnad_mbox_irq_sync(struct bnad *bnad) |
| 2083 | { |
| 2084 | u32 irq; |
| 2085 | unsigned long flags; |
| 2086 | |
| 2087 | spin_lock_irqsave(&bnad->bna_lock, flags); |
| 2088 | if (bnad->cfg_flags & BNAD_CF_MSIX) |
| 2089 | irq = bnad->msix_table[bnad->msix_num - 1].vector; |
| 2090 | else |
| 2091 | irq = bnad->pcidev->irq; |
| 2092 | spin_unlock_irqrestore(&bnad->bna_lock, flags); |
| 2093 | |
| 2094 | synchronize_irq(irq); |
| 2095 | } |
| 2096 | |
| 2097 | /* Utility used by bnad_start_xmit, for doing TSO */ |
| 2098 | static int |
| 2099 | bnad_tso_prepare(struct bnad *bnad, struct sk_buff *skb) |
| 2100 | { |
| 2101 | int err; |
| 2102 | |
| 2103 | /* SKB_GSO_TCPV4 and SKB_GSO_TCPV6 is defined since 2.6.18. */ |
| 2104 | BUG_ON(!(skb_shinfo(skb)->gso_type == SKB_GSO_TCPV4 || |
| 2105 | skb_shinfo(skb)->gso_type == SKB_GSO_TCPV6)); |
| 2106 | if (skb_header_cloned(skb)) { |
| 2107 | err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); |
| 2108 | if (err) { |
| 2109 | BNAD_UPDATE_CTR(bnad, tso_err); |
| 2110 | return err; |
| 2111 | } |
| 2112 | } |
| 2113 | |
| 2114 | /* |
| 2115 | * For TSO, the TCP checksum field is seeded with pseudo-header sum |
| 2116 | * excluding the length field. |
| 2117 | */ |
| 2118 | if (skb->protocol == htons(ETH_P_IP)) { |
| 2119 | struct iphdr *iph = ip_hdr(skb); |
| 2120 | |
| 2121 | /* Do we really need these? */ |
| 2122 | iph->tot_len = 0; |
| 2123 | iph->check = 0; |
| 2124 | |
| 2125 | tcp_hdr(skb)->check = |
| 2126 | ~csum_tcpudp_magic(iph->saddr, iph->daddr, 0, |
| 2127 | IPPROTO_TCP, 0); |
| 2128 | BNAD_UPDATE_CTR(bnad, tso4); |
| 2129 | } else { |
| 2130 | struct ipv6hdr *ipv6h = ipv6_hdr(skb); |
| 2131 | |
| 2132 | BUG_ON(!(skb->protocol == htons(ETH_P_IPV6))); |
| 2133 | ipv6h->payload_len = 0; |
| 2134 | tcp_hdr(skb)->check = |
| 2135 | ~csum_ipv6_magic(&ipv6h->saddr, &ipv6h->daddr, 0, |
| 2136 | IPPROTO_TCP, 0); |
| 2137 | BNAD_UPDATE_CTR(bnad, tso6); |
| 2138 | } |
| 2139 | |
| 2140 | return 0; |
| 2141 | } |
| 2142 | |
| 2143 | /* |
| 2144 | * Initialize Q numbers depending on Rx Paths |
| 2145 | * Called with bnad->bna_lock held, because of cfg_flags |
| 2146 | * access. |
| 2147 | */ |
| 2148 | static void |
| 2149 | bnad_q_num_init(struct bnad *bnad) |
| 2150 | { |
| 2151 | int rxps; |
| 2152 | |
| 2153 | rxps = min((uint)num_online_cpus(), |
| 2154 | (uint)(BNAD_MAX_RXS * BNAD_MAX_RXPS_PER_RX)); |
| 2155 | |
| 2156 | if (!(bnad->cfg_flags & BNAD_CF_MSIX)) |
| 2157 | rxps = 1; /* INTx */ |
| 2158 | |
| 2159 | bnad->num_rx = 1; |
| 2160 | bnad->num_tx = 1; |
| 2161 | bnad->num_rxp_per_rx = rxps; |
| 2162 | bnad->num_txq_per_tx = BNAD_TXQ_NUM; |
| 2163 | } |
| 2164 | |
| 2165 | /* |
| 2166 | * Adjusts the Q numbers, given a number of msix vectors |
| 2167 | * Give preference to RSS as opposed to Tx priority Queues, |
| 2168 | * in such a case, just use 1 Tx Q |
| 2169 | * Called with bnad->bna_lock held b'cos of cfg_flags access |
| 2170 | */ |
| 2171 | static void |
| 2172 | bnad_q_num_adjust(struct bnad *bnad, int msix_vectors) |
| 2173 | { |
| 2174 | bnad->num_txq_per_tx = 1; |
| 2175 | if ((msix_vectors >= (bnad->num_tx * bnad->num_txq_per_tx) + |
| 2176 | bnad_rxqs_per_cq + BNAD_MAILBOX_MSIX_VECTORS) && |
| 2177 | (bnad->cfg_flags & BNAD_CF_MSIX)) { |
| 2178 | bnad->num_rxp_per_rx = msix_vectors - |
| 2179 | (bnad->num_tx * bnad->num_txq_per_tx) - |
| 2180 | BNAD_MAILBOX_MSIX_VECTORS; |
| 2181 | } else |
| 2182 | bnad->num_rxp_per_rx = 1; |
| 2183 | } |
| 2184 | |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 2185 | /* Enable / disable device */ |
| 2186 | static void |
| 2187 | bnad_device_disable(struct bnad *bnad) |
| 2188 | { |
| 2189 | unsigned long flags; |
| 2190 | |
| 2191 | init_completion(&bnad->bnad_completions.ioc_comp); |
| 2192 | |
| 2193 | spin_lock_irqsave(&bnad->bna_lock, flags); |
| 2194 | bna_device_disable(&bnad->bna.device, BNA_HARD_CLEANUP); |
| 2195 | spin_unlock_irqrestore(&bnad->bna_lock, flags); |
| 2196 | |
| 2197 | wait_for_completion(&bnad->bnad_completions.ioc_comp); |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 2198 | } |
| 2199 | |
| 2200 | static int |
| 2201 | bnad_device_enable(struct bnad *bnad) |
| 2202 | { |
| 2203 | int err = 0; |
| 2204 | unsigned long flags; |
| 2205 | |
| 2206 | init_completion(&bnad->bnad_completions.ioc_comp); |
| 2207 | |
| 2208 | spin_lock_irqsave(&bnad->bna_lock, flags); |
| 2209 | bna_device_enable(&bnad->bna.device); |
| 2210 | spin_unlock_irqrestore(&bnad->bna_lock, flags); |
| 2211 | |
| 2212 | wait_for_completion(&bnad->bnad_completions.ioc_comp); |
| 2213 | |
| 2214 | if (bnad->bnad_completions.ioc_comp_status) |
| 2215 | err = bnad->bnad_completions.ioc_comp_status; |
| 2216 | |
| 2217 | return err; |
| 2218 | } |
| 2219 | |
| 2220 | /* Free BNA resources */ |
| 2221 | static void |
| 2222 | bnad_res_free(struct bnad *bnad) |
| 2223 | { |
| 2224 | int i; |
| 2225 | struct bna_res_info *res_info = &bnad->res_info[0]; |
| 2226 | |
| 2227 | for (i = 0; i < BNA_RES_T_MAX; i++) { |
| 2228 | if (res_info[i].res_type == BNA_RES_T_MEM) |
| 2229 | bnad_mem_free(bnad, &res_info[i].res_u.mem_info); |
| 2230 | else |
| 2231 | bnad_mbox_irq_free(bnad, &res_info[i].res_u.intr_info); |
| 2232 | } |
| 2233 | } |
| 2234 | |
| 2235 | /* Allocates memory and interrupt resources for BNA */ |
| 2236 | static int |
| 2237 | bnad_res_alloc(struct bnad *bnad) |
| 2238 | { |
| 2239 | int i, err; |
| 2240 | struct bna_res_info *res_info = &bnad->res_info[0]; |
| 2241 | |
| 2242 | for (i = 0; i < BNA_RES_T_MAX; i++) { |
| 2243 | if (res_info[i].res_type == BNA_RES_T_MEM) |
| 2244 | err = bnad_mem_alloc(bnad, &res_info[i].res_u.mem_info); |
| 2245 | else |
| 2246 | err = bnad_mbox_irq_alloc(bnad, |
| 2247 | &res_info[i].res_u.intr_info); |
| 2248 | if (err) |
| 2249 | goto err_return; |
| 2250 | } |
| 2251 | return 0; |
| 2252 | |
| 2253 | err_return: |
| 2254 | bnad_res_free(bnad); |
| 2255 | return err; |
| 2256 | } |
| 2257 | |
| 2258 | /* Interrupt enable / disable */ |
| 2259 | static void |
| 2260 | bnad_enable_msix(struct bnad *bnad) |
| 2261 | { |
| 2262 | int i, ret; |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 2263 | unsigned long flags; |
| 2264 | |
| 2265 | spin_lock_irqsave(&bnad->bna_lock, flags); |
| 2266 | if (!(bnad->cfg_flags & BNAD_CF_MSIX)) { |
| 2267 | spin_unlock_irqrestore(&bnad->bna_lock, flags); |
| 2268 | return; |
| 2269 | } |
| 2270 | spin_unlock_irqrestore(&bnad->bna_lock, flags); |
| 2271 | |
| 2272 | if (bnad->msix_table) |
| 2273 | return; |
| 2274 | |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 2275 | bnad->msix_table = |
Rasesh Mody | b7ee31c5 | 2010-10-05 15:46:05 +0000 | [diff] [blame] | 2276 | kcalloc(bnad->msix_num, sizeof(struct msix_entry), GFP_KERNEL); |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 2277 | |
| 2278 | if (!bnad->msix_table) |
| 2279 | goto intx_mode; |
| 2280 | |
Rasesh Mody | b7ee31c5 | 2010-10-05 15:46:05 +0000 | [diff] [blame] | 2281 | for (i = 0; i < bnad->msix_num; i++) |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 2282 | bnad->msix_table[i].entry = i; |
| 2283 | |
Rasesh Mody | b7ee31c5 | 2010-10-05 15:46:05 +0000 | [diff] [blame] | 2284 | ret = pci_enable_msix(bnad->pcidev, bnad->msix_table, bnad->msix_num); |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 2285 | if (ret > 0) { |
| 2286 | /* Not enough MSI-X vectors. */ |
| 2287 | |
| 2288 | spin_lock_irqsave(&bnad->bna_lock, flags); |
| 2289 | /* ret = #of vectors that we got */ |
| 2290 | bnad_q_num_adjust(bnad, ret); |
| 2291 | spin_unlock_irqrestore(&bnad->bna_lock, flags); |
| 2292 | |
| 2293 | bnad->msix_num = (bnad->num_tx * bnad->num_txq_per_tx) |
| 2294 | + (bnad->num_rx |
| 2295 | * bnad->num_rxp_per_rx) + |
| 2296 | BNAD_MAILBOX_MSIX_VECTORS; |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 2297 | |
| 2298 | /* Try once more with adjusted numbers */ |
| 2299 | /* If this fails, fall back to INTx */ |
| 2300 | ret = pci_enable_msix(bnad->pcidev, bnad->msix_table, |
Rasesh Mody | b7ee31c5 | 2010-10-05 15:46:05 +0000 | [diff] [blame] | 2301 | bnad->msix_num); |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 2302 | if (ret) |
| 2303 | goto intx_mode; |
| 2304 | |
| 2305 | } else if (ret < 0) |
| 2306 | goto intx_mode; |
| 2307 | return; |
| 2308 | |
| 2309 | intx_mode: |
| 2310 | |
| 2311 | kfree(bnad->msix_table); |
| 2312 | bnad->msix_table = NULL; |
| 2313 | bnad->msix_num = 0; |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 2314 | spin_lock_irqsave(&bnad->bna_lock, flags); |
| 2315 | bnad->cfg_flags &= ~BNAD_CF_MSIX; |
| 2316 | bnad_q_num_init(bnad); |
| 2317 | spin_unlock_irqrestore(&bnad->bna_lock, flags); |
| 2318 | } |
| 2319 | |
| 2320 | static void |
| 2321 | bnad_disable_msix(struct bnad *bnad) |
| 2322 | { |
| 2323 | u32 cfg_flags; |
| 2324 | unsigned long flags; |
| 2325 | |
| 2326 | spin_lock_irqsave(&bnad->bna_lock, flags); |
| 2327 | cfg_flags = bnad->cfg_flags; |
| 2328 | if (bnad->cfg_flags & BNAD_CF_MSIX) |
| 2329 | bnad->cfg_flags &= ~BNAD_CF_MSIX; |
| 2330 | spin_unlock_irqrestore(&bnad->bna_lock, flags); |
| 2331 | |
| 2332 | if (cfg_flags & BNAD_CF_MSIX) { |
| 2333 | pci_disable_msix(bnad->pcidev); |
| 2334 | kfree(bnad->msix_table); |
| 2335 | bnad->msix_table = NULL; |
| 2336 | } |
| 2337 | } |
| 2338 | |
| 2339 | /* Netdev entry points */ |
| 2340 | static int |
| 2341 | bnad_open(struct net_device *netdev) |
| 2342 | { |
| 2343 | int err; |
| 2344 | struct bnad *bnad = netdev_priv(netdev); |
| 2345 | struct bna_pause_config pause_config; |
| 2346 | int mtu; |
| 2347 | unsigned long flags; |
| 2348 | |
| 2349 | mutex_lock(&bnad->conf_mutex); |
| 2350 | |
| 2351 | /* Tx */ |
| 2352 | err = bnad_setup_tx(bnad, 0); |
| 2353 | if (err) |
| 2354 | goto err_return; |
| 2355 | |
| 2356 | /* Rx */ |
| 2357 | err = bnad_setup_rx(bnad, 0); |
| 2358 | if (err) |
| 2359 | goto cleanup_tx; |
| 2360 | |
| 2361 | /* Port */ |
| 2362 | pause_config.tx_pause = 0; |
| 2363 | pause_config.rx_pause = 0; |
| 2364 | |
| 2365 | mtu = ETH_HLEN + bnad->netdev->mtu + ETH_FCS_LEN; |
| 2366 | |
| 2367 | spin_lock_irqsave(&bnad->bna_lock, flags); |
| 2368 | bna_port_mtu_set(&bnad->bna.port, mtu, NULL); |
| 2369 | bna_port_pause_config(&bnad->bna.port, &pause_config, NULL); |
| 2370 | bna_port_enable(&bnad->bna.port); |
| 2371 | spin_unlock_irqrestore(&bnad->bna_lock, flags); |
| 2372 | |
| 2373 | /* Enable broadcast */ |
| 2374 | bnad_enable_default_bcast(bnad); |
| 2375 | |
Rasesh Mody | aad75b6 | 2010-12-23 21:45:08 +0000 | [diff] [blame] | 2376 | /* Restore VLANs, if any */ |
| 2377 | bnad_restore_vlans(bnad, 0); |
| 2378 | |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 2379 | /* Set the UCAST address */ |
| 2380 | spin_lock_irqsave(&bnad->bna_lock, flags); |
| 2381 | bnad_mac_addr_set_locked(bnad, netdev->dev_addr); |
| 2382 | spin_unlock_irqrestore(&bnad->bna_lock, flags); |
| 2383 | |
| 2384 | /* Start the stats timer */ |
| 2385 | bnad_stats_timer_start(bnad); |
| 2386 | |
| 2387 | mutex_unlock(&bnad->conf_mutex); |
| 2388 | |
| 2389 | return 0; |
| 2390 | |
| 2391 | cleanup_tx: |
| 2392 | bnad_cleanup_tx(bnad, 0); |
| 2393 | |
| 2394 | err_return: |
| 2395 | mutex_unlock(&bnad->conf_mutex); |
| 2396 | return err; |
| 2397 | } |
| 2398 | |
| 2399 | static int |
| 2400 | bnad_stop(struct net_device *netdev) |
| 2401 | { |
| 2402 | struct bnad *bnad = netdev_priv(netdev); |
| 2403 | unsigned long flags; |
| 2404 | |
| 2405 | mutex_lock(&bnad->conf_mutex); |
| 2406 | |
| 2407 | /* Stop the stats timer */ |
| 2408 | bnad_stats_timer_stop(bnad); |
| 2409 | |
| 2410 | init_completion(&bnad->bnad_completions.port_comp); |
| 2411 | |
| 2412 | spin_lock_irqsave(&bnad->bna_lock, flags); |
| 2413 | bna_port_disable(&bnad->bna.port, BNA_HARD_CLEANUP, |
| 2414 | bnad_cb_port_disabled); |
| 2415 | spin_unlock_irqrestore(&bnad->bna_lock, flags); |
| 2416 | |
| 2417 | wait_for_completion(&bnad->bnad_completions.port_comp); |
| 2418 | |
| 2419 | bnad_cleanup_tx(bnad, 0); |
| 2420 | bnad_cleanup_rx(bnad, 0); |
| 2421 | |
| 2422 | /* Synchronize mailbox IRQ */ |
| 2423 | bnad_mbox_irq_sync(bnad); |
| 2424 | |
| 2425 | mutex_unlock(&bnad->conf_mutex); |
| 2426 | |
| 2427 | return 0; |
| 2428 | } |
| 2429 | |
| 2430 | /* TX */ |
| 2431 | /* |
| 2432 | * bnad_start_xmit : Netdev entry point for Transmit |
| 2433 | * Called under lock held by net_device |
| 2434 | */ |
| 2435 | static netdev_tx_t |
| 2436 | bnad_start_xmit(struct sk_buff *skb, struct net_device *netdev) |
| 2437 | { |
| 2438 | struct bnad *bnad = netdev_priv(netdev); |
| 2439 | |
| 2440 | u16 txq_prod, vlan_tag = 0; |
| 2441 | u32 unmap_prod, wis, wis_used, wi_range; |
| 2442 | u32 vectors, vect_id, i, acked; |
| 2443 | u32 tx_id; |
| 2444 | int err; |
| 2445 | |
| 2446 | struct bnad_tx_info *tx_info; |
| 2447 | struct bna_tcb *tcb; |
| 2448 | struct bnad_unmap_q *unmap_q; |
| 2449 | dma_addr_t dma_addr; |
| 2450 | struct bna_txq_entry *txqent; |
| 2451 | bna_txq_wi_ctrl_flag_t flags; |
| 2452 | |
| 2453 | if (unlikely |
| 2454 | (skb->len <= ETH_HLEN || skb->len > BFI_TX_MAX_DATA_PER_PKT)) { |
| 2455 | dev_kfree_skb(skb); |
| 2456 | return NETDEV_TX_OK; |
| 2457 | } |
| 2458 | |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 2459 | tx_id = 0; |
| 2460 | |
| 2461 | tx_info = &bnad->tx_info[tx_id]; |
| 2462 | tcb = tx_info->tcb[tx_id]; |
| 2463 | unmap_q = tcb->unmap_q; |
| 2464 | |
Rasesh Mody | be7fa32 | 2010-12-23 21:45:01 +0000 | [diff] [blame] | 2465 | /* |
| 2466 | * Takes care of the Tx that is scheduled between clearing the flag |
| 2467 | * and the netif_stop_queue() call. |
| 2468 | */ |
| 2469 | if (unlikely(!test_bit(BNAD_TXQ_TX_STARTED, &tcb->flags))) { |
| 2470 | dev_kfree_skb(skb); |
| 2471 | return NETDEV_TX_OK; |
| 2472 | } |
| 2473 | |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 2474 | vectors = 1 + skb_shinfo(skb)->nr_frags; |
| 2475 | if (vectors > BFI_TX_MAX_VECTORS_PER_PKT) { |
| 2476 | dev_kfree_skb(skb); |
| 2477 | return NETDEV_TX_OK; |
| 2478 | } |
| 2479 | wis = BNA_TXQ_WI_NEEDED(vectors); /* 4 vectors per work item */ |
| 2480 | acked = 0; |
| 2481 | if (unlikely |
| 2482 | (wis > BNA_QE_FREE_CNT(tcb, tcb->q_depth) || |
| 2483 | vectors > BNA_QE_FREE_CNT(unmap_q, unmap_q->q_depth))) { |
| 2484 | if ((u16) (*tcb->hw_consumer_index) != |
| 2485 | tcb->consumer_index && |
| 2486 | !test_and_set_bit(BNAD_TXQ_FREE_SENT, &tcb->flags)) { |
| 2487 | acked = bnad_free_txbufs(bnad, tcb); |
Rasesh Mody | be7fa32 | 2010-12-23 21:45:01 +0000 | [diff] [blame] | 2488 | if (likely(test_bit(BNAD_TXQ_TX_STARTED, &tcb->flags))) |
| 2489 | bna_ib_ack(tcb->i_dbell, acked); |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 2490 | smp_mb__before_clear_bit(); |
| 2491 | clear_bit(BNAD_TXQ_FREE_SENT, &tcb->flags); |
| 2492 | } else { |
| 2493 | netif_stop_queue(netdev); |
| 2494 | BNAD_UPDATE_CTR(bnad, netif_queue_stop); |
| 2495 | } |
| 2496 | |
| 2497 | smp_mb(); |
| 2498 | /* |
| 2499 | * Check again to deal with race condition between |
| 2500 | * netif_stop_queue here, and netif_wake_queue in |
| 2501 | * interrupt handler which is not inside netif tx lock. |
| 2502 | */ |
| 2503 | if (likely |
| 2504 | (wis > BNA_QE_FREE_CNT(tcb, tcb->q_depth) || |
| 2505 | vectors > BNA_QE_FREE_CNT(unmap_q, unmap_q->q_depth))) { |
| 2506 | BNAD_UPDATE_CTR(bnad, netif_queue_stop); |
| 2507 | return NETDEV_TX_BUSY; |
| 2508 | } else { |
| 2509 | netif_wake_queue(netdev); |
| 2510 | BNAD_UPDATE_CTR(bnad, netif_queue_wakeup); |
| 2511 | } |
| 2512 | } |
| 2513 | |
| 2514 | unmap_prod = unmap_q->producer_index; |
| 2515 | wis_used = 1; |
| 2516 | vect_id = 0; |
| 2517 | flags = 0; |
| 2518 | |
| 2519 | txq_prod = tcb->producer_index; |
| 2520 | BNA_TXQ_QPGE_PTR_GET(txq_prod, tcb->sw_qpt, txqent, wi_range); |
| 2521 | BUG_ON(!(wi_range <= tcb->q_depth)); |
| 2522 | txqent->hdr.wi.reserved = 0; |
| 2523 | txqent->hdr.wi.num_vectors = vectors; |
| 2524 | txqent->hdr.wi.opcode = |
| 2525 | htons((skb_is_gso(skb) ? BNA_TXQ_WI_SEND_LSO : |
| 2526 | BNA_TXQ_WI_SEND)); |
| 2527 | |
Jesse Gross | eab6d18 | 2010-10-20 13:56:03 +0000 | [diff] [blame] | 2528 | if (vlan_tx_tag_present(skb)) { |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 2529 | vlan_tag = (u16) vlan_tx_tag_get(skb); |
| 2530 | flags |= (BNA_TXQ_WI_CF_INS_PRIO | BNA_TXQ_WI_CF_INS_VLAN); |
| 2531 | } |
| 2532 | if (test_bit(BNAD_RF_CEE_RUNNING, &bnad->run_flags)) { |
| 2533 | vlan_tag = |
| 2534 | (tcb->priority & 0x7) << 13 | (vlan_tag & 0x1fff); |
| 2535 | flags |= (BNA_TXQ_WI_CF_INS_PRIO | BNA_TXQ_WI_CF_INS_VLAN); |
| 2536 | } |
| 2537 | |
| 2538 | txqent->hdr.wi.vlan_tag = htons(vlan_tag); |
| 2539 | |
| 2540 | if (skb_is_gso(skb)) { |
| 2541 | err = bnad_tso_prepare(bnad, skb); |
| 2542 | if (err) { |
| 2543 | dev_kfree_skb(skb); |
| 2544 | return NETDEV_TX_OK; |
| 2545 | } |
| 2546 | txqent->hdr.wi.lso_mss = htons(skb_is_gso(skb)); |
| 2547 | flags |= (BNA_TXQ_WI_CF_IP_CKSUM | BNA_TXQ_WI_CF_TCP_CKSUM); |
| 2548 | txqent->hdr.wi.l4_hdr_size_n_offset = |
| 2549 | htons(BNA_TXQ_WI_L4_HDR_N_OFFSET |
| 2550 | (tcp_hdrlen(skb) >> 2, |
| 2551 | skb_transport_offset(skb))); |
| 2552 | } else if (skb->ip_summed == CHECKSUM_PARTIAL) { |
| 2553 | u8 proto = 0; |
| 2554 | |
| 2555 | txqent->hdr.wi.lso_mss = 0; |
| 2556 | |
| 2557 | if (skb->protocol == htons(ETH_P_IP)) |
| 2558 | proto = ip_hdr(skb)->protocol; |
| 2559 | else if (skb->protocol == htons(ETH_P_IPV6)) { |
| 2560 | /* nexthdr may not be TCP immediately. */ |
| 2561 | proto = ipv6_hdr(skb)->nexthdr; |
| 2562 | } |
| 2563 | if (proto == IPPROTO_TCP) { |
| 2564 | flags |= BNA_TXQ_WI_CF_TCP_CKSUM; |
| 2565 | txqent->hdr.wi.l4_hdr_size_n_offset = |
| 2566 | htons(BNA_TXQ_WI_L4_HDR_N_OFFSET |
| 2567 | (0, skb_transport_offset(skb))); |
| 2568 | |
| 2569 | BNAD_UPDATE_CTR(bnad, tcpcsum_offload); |
| 2570 | |
| 2571 | BUG_ON(!(skb_headlen(skb) >= |
| 2572 | skb_transport_offset(skb) + tcp_hdrlen(skb))); |
| 2573 | |
| 2574 | } else if (proto == IPPROTO_UDP) { |
| 2575 | flags |= BNA_TXQ_WI_CF_UDP_CKSUM; |
| 2576 | txqent->hdr.wi.l4_hdr_size_n_offset = |
| 2577 | htons(BNA_TXQ_WI_L4_HDR_N_OFFSET |
| 2578 | (0, skb_transport_offset(skb))); |
| 2579 | |
| 2580 | BNAD_UPDATE_CTR(bnad, udpcsum_offload); |
| 2581 | |
| 2582 | BUG_ON(!(skb_headlen(skb) >= |
| 2583 | skb_transport_offset(skb) + |
| 2584 | sizeof(struct udphdr))); |
| 2585 | } else { |
| 2586 | err = skb_checksum_help(skb); |
| 2587 | BNAD_UPDATE_CTR(bnad, csum_help); |
| 2588 | if (err) { |
| 2589 | dev_kfree_skb(skb); |
| 2590 | BNAD_UPDATE_CTR(bnad, csum_help_err); |
| 2591 | return NETDEV_TX_OK; |
| 2592 | } |
| 2593 | } |
| 2594 | } else { |
| 2595 | txqent->hdr.wi.lso_mss = 0; |
| 2596 | txqent->hdr.wi.l4_hdr_size_n_offset = 0; |
| 2597 | } |
| 2598 | |
| 2599 | txqent->hdr.wi.flags = htons(flags); |
| 2600 | |
| 2601 | txqent->hdr.wi.frame_length = htonl(skb->len); |
| 2602 | |
| 2603 | unmap_q->unmap_array[unmap_prod].skb = skb; |
| 2604 | BUG_ON(!(skb_headlen(skb) <= BFI_TX_MAX_DATA_PER_VECTOR)); |
| 2605 | txqent->vector[vect_id].length = htons(skb_headlen(skb)); |
Ivan Vecera | 5ea7431 | 2011-02-02 04:37:02 +0000 | [diff] [blame] | 2606 | dma_addr = dma_map_single(&bnad->pcidev->dev, skb->data, |
| 2607 | skb_headlen(skb), DMA_TO_DEVICE); |
| 2608 | dma_unmap_addr_set(&unmap_q->unmap_array[unmap_prod], dma_addr, |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 2609 | dma_addr); |
| 2610 | |
| 2611 | BNA_SET_DMA_ADDR(dma_addr, &txqent->vector[vect_id].host_addr); |
| 2612 | BNA_QE_INDX_ADD(unmap_prod, 1, unmap_q->q_depth); |
| 2613 | |
| 2614 | for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { |
| 2615 | struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[i]; |
| 2616 | u32 size = frag->size; |
| 2617 | |
| 2618 | if (++vect_id == BFI_TX_MAX_VECTORS_PER_WI) { |
| 2619 | vect_id = 0; |
| 2620 | if (--wi_range) |
| 2621 | txqent++; |
| 2622 | else { |
| 2623 | BNA_QE_INDX_ADD(txq_prod, wis_used, |
| 2624 | tcb->q_depth); |
| 2625 | wis_used = 0; |
| 2626 | BNA_TXQ_QPGE_PTR_GET(txq_prod, tcb->sw_qpt, |
| 2627 | txqent, wi_range); |
| 2628 | BUG_ON(!(wi_range <= tcb->q_depth)); |
| 2629 | } |
| 2630 | wis_used++; |
| 2631 | txqent->hdr.wi_ext.opcode = htons(BNA_TXQ_WI_EXTENSION); |
| 2632 | } |
| 2633 | |
| 2634 | BUG_ON(!(size <= BFI_TX_MAX_DATA_PER_VECTOR)); |
| 2635 | txqent->vector[vect_id].length = htons(size); |
Ivan Vecera | 5ea7431 | 2011-02-02 04:37:02 +0000 | [diff] [blame] | 2636 | dma_addr = dma_map_page(&bnad->pcidev->dev, frag->page, |
| 2637 | frag->page_offset, size, DMA_TO_DEVICE); |
| 2638 | dma_unmap_addr_set(&unmap_q->unmap_array[unmap_prod], dma_addr, |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 2639 | dma_addr); |
| 2640 | BNA_SET_DMA_ADDR(dma_addr, &txqent->vector[vect_id].host_addr); |
| 2641 | BNA_QE_INDX_ADD(unmap_prod, 1, unmap_q->q_depth); |
| 2642 | } |
| 2643 | |
| 2644 | unmap_q->producer_index = unmap_prod; |
| 2645 | BNA_QE_INDX_ADD(txq_prod, wis_used, tcb->q_depth); |
| 2646 | tcb->producer_index = txq_prod; |
| 2647 | |
| 2648 | smp_mb(); |
Rasesh Mody | be7fa32 | 2010-12-23 21:45:01 +0000 | [diff] [blame] | 2649 | |
| 2650 | if (unlikely(!test_bit(BNAD_TXQ_TX_STARTED, &tcb->flags))) |
| 2651 | return NETDEV_TX_OK; |
| 2652 | |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 2653 | bna_txq_prod_indx_doorbell(tcb); |
| 2654 | |
| 2655 | if ((u16) (*tcb->hw_consumer_index) != tcb->consumer_index) |
| 2656 | tasklet_schedule(&bnad->tx_free_tasklet); |
| 2657 | |
| 2658 | return NETDEV_TX_OK; |
| 2659 | } |
| 2660 | |
| 2661 | /* |
| 2662 | * Used spin_lock to synchronize reading of stats structures, which |
| 2663 | * is written by BNA under the same lock. |
| 2664 | */ |
Eric Dumazet | 250e061 | 2010-09-02 12:45:02 -0700 | [diff] [blame] | 2665 | static struct rtnl_link_stats64 * |
| 2666 | bnad_get_stats64(struct net_device *netdev, struct rtnl_link_stats64 *stats) |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 2667 | { |
| 2668 | struct bnad *bnad = netdev_priv(netdev); |
| 2669 | unsigned long flags; |
| 2670 | |
| 2671 | spin_lock_irqsave(&bnad->bna_lock, flags); |
| 2672 | |
Eric Dumazet | 250e061 | 2010-09-02 12:45:02 -0700 | [diff] [blame] | 2673 | bnad_netdev_qstats_fill(bnad, stats); |
| 2674 | bnad_netdev_hwstats_fill(bnad, stats); |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 2675 | |
| 2676 | spin_unlock_irqrestore(&bnad->bna_lock, flags); |
| 2677 | |
Eric Dumazet | 250e061 | 2010-09-02 12:45:02 -0700 | [diff] [blame] | 2678 | return stats; |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 2679 | } |
| 2680 | |
| 2681 | static void |
| 2682 | bnad_set_rx_mode(struct net_device *netdev) |
| 2683 | { |
| 2684 | struct bnad *bnad = netdev_priv(netdev); |
| 2685 | u32 new_mask, valid_mask; |
| 2686 | unsigned long flags; |
| 2687 | |
| 2688 | spin_lock_irqsave(&bnad->bna_lock, flags); |
| 2689 | |
| 2690 | new_mask = valid_mask = 0; |
| 2691 | |
| 2692 | if (netdev->flags & IFF_PROMISC) { |
| 2693 | if (!(bnad->cfg_flags & BNAD_CF_PROMISC)) { |
| 2694 | new_mask = BNAD_RXMODE_PROMISC_DEFAULT; |
| 2695 | valid_mask = BNAD_RXMODE_PROMISC_DEFAULT; |
| 2696 | bnad->cfg_flags |= BNAD_CF_PROMISC; |
| 2697 | } |
| 2698 | } else { |
| 2699 | if (bnad->cfg_flags & BNAD_CF_PROMISC) { |
| 2700 | new_mask = ~BNAD_RXMODE_PROMISC_DEFAULT; |
| 2701 | valid_mask = BNAD_RXMODE_PROMISC_DEFAULT; |
| 2702 | bnad->cfg_flags &= ~BNAD_CF_PROMISC; |
| 2703 | } |
| 2704 | } |
| 2705 | |
| 2706 | if (netdev->flags & IFF_ALLMULTI) { |
| 2707 | if (!(bnad->cfg_flags & BNAD_CF_ALLMULTI)) { |
| 2708 | new_mask |= BNA_RXMODE_ALLMULTI; |
| 2709 | valid_mask |= BNA_RXMODE_ALLMULTI; |
| 2710 | bnad->cfg_flags |= BNAD_CF_ALLMULTI; |
| 2711 | } |
| 2712 | } else { |
| 2713 | if (bnad->cfg_flags & BNAD_CF_ALLMULTI) { |
| 2714 | new_mask &= ~BNA_RXMODE_ALLMULTI; |
| 2715 | valid_mask |= BNA_RXMODE_ALLMULTI; |
| 2716 | bnad->cfg_flags &= ~BNAD_CF_ALLMULTI; |
| 2717 | } |
| 2718 | } |
| 2719 | |
| 2720 | bna_rx_mode_set(bnad->rx_info[0].rx, new_mask, valid_mask, NULL); |
| 2721 | |
| 2722 | if (!netdev_mc_empty(netdev)) { |
| 2723 | u8 *mcaddr_list; |
| 2724 | int mc_count = netdev_mc_count(netdev); |
| 2725 | |
| 2726 | /* Index 0 holds the broadcast address */ |
| 2727 | mcaddr_list = |
| 2728 | kzalloc((mc_count + 1) * ETH_ALEN, |
| 2729 | GFP_ATOMIC); |
| 2730 | if (!mcaddr_list) |
Jiri Slaby | ca1cef3 | 2010-09-04 02:08:41 +0000 | [diff] [blame] | 2731 | goto unlock; |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 2732 | |
| 2733 | memcpy(&mcaddr_list[0], &bnad_bcast_addr[0], ETH_ALEN); |
| 2734 | |
| 2735 | /* Copy rest of the MC addresses */ |
| 2736 | bnad_netdev_mc_list_get(netdev, mcaddr_list); |
| 2737 | |
| 2738 | bna_rx_mcast_listset(bnad->rx_info[0].rx, mc_count + 1, |
| 2739 | mcaddr_list, NULL); |
| 2740 | |
| 2741 | /* Should we enable BNAD_CF_ALLMULTI for err != 0 ? */ |
| 2742 | kfree(mcaddr_list); |
| 2743 | } |
Jiri Slaby | ca1cef3 | 2010-09-04 02:08:41 +0000 | [diff] [blame] | 2744 | unlock: |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 2745 | spin_unlock_irqrestore(&bnad->bna_lock, flags); |
| 2746 | } |
| 2747 | |
| 2748 | /* |
| 2749 | * bna_lock is used to sync writes to netdev->addr |
| 2750 | * conf_lock cannot be used since this call may be made |
| 2751 | * in a non-blocking context. |
| 2752 | */ |
| 2753 | static int |
| 2754 | bnad_set_mac_address(struct net_device *netdev, void *mac_addr) |
| 2755 | { |
| 2756 | int err; |
| 2757 | struct bnad *bnad = netdev_priv(netdev); |
| 2758 | struct sockaddr *sa = (struct sockaddr *)mac_addr; |
| 2759 | unsigned long flags; |
| 2760 | |
| 2761 | spin_lock_irqsave(&bnad->bna_lock, flags); |
| 2762 | |
| 2763 | err = bnad_mac_addr_set_locked(bnad, sa->sa_data); |
| 2764 | |
| 2765 | if (!err) |
| 2766 | memcpy(netdev->dev_addr, sa->sa_data, netdev->addr_len); |
| 2767 | |
| 2768 | spin_unlock_irqrestore(&bnad->bna_lock, flags); |
| 2769 | |
| 2770 | return err; |
| 2771 | } |
| 2772 | |
| 2773 | static int |
| 2774 | bnad_change_mtu(struct net_device *netdev, int new_mtu) |
| 2775 | { |
| 2776 | int mtu, err = 0; |
| 2777 | unsigned long flags; |
| 2778 | |
| 2779 | struct bnad *bnad = netdev_priv(netdev); |
| 2780 | |
| 2781 | if (new_mtu + ETH_HLEN < ETH_ZLEN || new_mtu > BNAD_JUMBO_MTU) |
| 2782 | return -EINVAL; |
| 2783 | |
| 2784 | mutex_lock(&bnad->conf_mutex); |
| 2785 | |
| 2786 | netdev->mtu = new_mtu; |
| 2787 | |
| 2788 | mtu = ETH_HLEN + new_mtu + ETH_FCS_LEN; |
| 2789 | |
| 2790 | spin_lock_irqsave(&bnad->bna_lock, flags); |
| 2791 | bna_port_mtu_set(&bnad->bna.port, mtu, NULL); |
| 2792 | spin_unlock_irqrestore(&bnad->bna_lock, flags); |
| 2793 | |
| 2794 | mutex_unlock(&bnad->conf_mutex); |
| 2795 | return err; |
| 2796 | } |
| 2797 | |
| 2798 | static void |
| 2799 | bnad_vlan_rx_register(struct net_device *netdev, |
| 2800 | struct vlan_group *vlan_grp) |
| 2801 | { |
| 2802 | struct bnad *bnad = netdev_priv(netdev); |
| 2803 | |
| 2804 | mutex_lock(&bnad->conf_mutex); |
| 2805 | bnad->vlan_grp = vlan_grp; |
| 2806 | mutex_unlock(&bnad->conf_mutex); |
| 2807 | } |
| 2808 | |
| 2809 | static void |
| 2810 | bnad_vlan_rx_add_vid(struct net_device *netdev, |
| 2811 | unsigned short vid) |
| 2812 | { |
| 2813 | struct bnad *bnad = netdev_priv(netdev); |
| 2814 | unsigned long flags; |
| 2815 | |
| 2816 | if (!bnad->rx_info[0].rx) |
| 2817 | return; |
| 2818 | |
| 2819 | mutex_lock(&bnad->conf_mutex); |
| 2820 | |
| 2821 | spin_lock_irqsave(&bnad->bna_lock, flags); |
| 2822 | bna_rx_vlan_add(bnad->rx_info[0].rx, vid); |
| 2823 | spin_unlock_irqrestore(&bnad->bna_lock, flags); |
| 2824 | |
| 2825 | mutex_unlock(&bnad->conf_mutex); |
| 2826 | } |
| 2827 | |
| 2828 | static void |
| 2829 | bnad_vlan_rx_kill_vid(struct net_device *netdev, |
| 2830 | unsigned short vid) |
| 2831 | { |
| 2832 | struct bnad *bnad = netdev_priv(netdev); |
| 2833 | unsigned long flags; |
| 2834 | |
| 2835 | if (!bnad->rx_info[0].rx) |
| 2836 | return; |
| 2837 | |
| 2838 | mutex_lock(&bnad->conf_mutex); |
| 2839 | |
| 2840 | spin_lock_irqsave(&bnad->bna_lock, flags); |
| 2841 | bna_rx_vlan_del(bnad->rx_info[0].rx, vid); |
| 2842 | spin_unlock_irqrestore(&bnad->bna_lock, flags); |
| 2843 | |
| 2844 | mutex_unlock(&bnad->conf_mutex); |
| 2845 | } |
| 2846 | |
| 2847 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 2848 | static void |
| 2849 | bnad_netpoll(struct net_device *netdev) |
| 2850 | { |
| 2851 | struct bnad *bnad = netdev_priv(netdev); |
| 2852 | struct bnad_rx_info *rx_info; |
| 2853 | struct bnad_rx_ctrl *rx_ctrl; |
| 2854 | u32 curr_mask; |
| 2855 | int i, j; |
| 2856 | |
| 2857 | if (!(bnad->cfg_flags & BNAD_CF_MSIX)) { |
| 2858 | bna_intx_disable(&bnad->bna, curr_mask); |
| 2859 | bnad_isr(bnad->pcidev->irq, netdev); |
| 2860 | bna_intx_enable(&bnad->bna, curr_mask); |
| 2861 | } else { |
| 2862 | for (i = 0; i < bnad->num_rx; i++) { |
| 2863 | rx_info = &bnad->rx_info[i]; |
| 2864 | if (!rx_info->rx) |
| 2865 | continue; |
| 2866 | for (j = 0; j < bnad->num_rxp_per_rx; j++) { |
| 2867 | rx_ctrl = &rx_info->rx_ctrl[j]; |
| 2868 | if (rx_ctrl->ccb) { |
| 2869 | bnad_disable_rx_irq(bnad, |
| 2870 | rx_ctrl->ccb); |
| 2871 | bnad_netif_rx_schedule_poll(bnad, |
| 2872 | rx_ctrl->ccb); |
| 2873 | } |
| 2874 | } |
| 2875 | } |
| 2876 | } |
| 2877 | } |
| 2878 | #endif |
| 2879 | |
| 2880 | static const struct net_device_ops bnad_netdev_ops = { |
| 2881 | .ndo_open = bnad_open, |
| 2882 | .ndo_stop = bnad_stop, |
| 2883 | .ndo_start_xmit = bnad_start_xmit, |
Eric Dumazet | 250e061 | 2010-09-02 12:45:02 -0700 | [diff] [blame] | 2884 | .ndo_get_stats64 = bnad_get_stats64, |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 2885 | .ndo_set_rx_mode = bnad_set_rx_mode, |
| 2886 | .ndo_set_multicast_list = bnad_set_rx_mode, |
| 2887 | .ndo_validate_addr = eth_validate_addr, |
| 2888 | .ndo_set_mac_address = bnad_set_mac_address, |
| 2889 | .ndo_change_mtu = bnad_change_mtu, |
| 2890 | .ndo_vlan_rx_register = bnad_vlan_rx_register, |
| 2891 | .ndo_vlan_rx_add_vid = bnad_vlan_rx_add_vid, |
| 2892 | .ndo_vlan_rx_kill_vid = bnad_vlan_rx_kill_vid, |
| 2893 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 2894 | .ndo_poll_controller = bnad_netpoll |
| 2895 | #endif |
| 2896 | }; |
| 2897 | |
| 2898 | static void |
| 2899 | bnad_netdev_init(struct bnad *bnad, bool using_dac) |
| 2900 | { |
| 2901 | struct net_device *netdev = bnad->netdev; |
| 2902 | |
Michał Mirosław | e5ee20e | 2011-04-12 09:38:23 +0000 | [diff] [blame] | 2903 | netdev->hw_features = NETIF_F_SG | NETIF_F_RXCSUM | |
| 2904 | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | |
| 2905 | NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_HW_VLAN_TX; |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 2906 | |
Michał Mirosław | e5ee20e | 2011-04-12 09:38:23 +0000 | [diff] [blame] | 2907 | netdev->vlan_features = NETIF_F_SG | NETIF_F_HIGHDMA | |
| 2908 | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | |
| 2909 | NETIF_F_TSO | NETIF_F_TSO6; |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 2910 | |
Michał Mirosław | e5ee20e | 2011-04-12 09:38:23 +0000 | [diff] [blame] | 2911 | netdev->features |= netdev->hw_features | |
| 2912 | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER; |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 2913 | |
| 2914 | if (using_dac) |
| 2915 | netdev->features |= NETIF_F_HIGHDMA; |
| 2916 | |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 2917 | netdev->mem_start = bnad->mmio_start; |
| 2918 | netdev->mem_end = bnad->mmio_start + bnad->mmio_len - 1; |
| 2919 | |
| 2920 | netdev->netdev_ops = &bnad_netdev_ops; |
| 2921 | bnad_set_ethtool_ops(netdev); |
| 2922 | } |
| 2923 | |
| 2924 | /* |
| 2925 | * 1. Initialize the bnad structure |
| 2926 | * 2. Setup netdev pointer in pci_dev |
| 2927 | * 3. Initialze Tx free tasklet |
| 2928 | * 4. Initialize no. of TxQ & CQs & MSIX vectors |
| 2929 | */ |
| 2930 | static int |
| 2931 | bnad_init(struct bnad *bnad, |
| 2932 | struct pci_dev *pdev, struct net_device *netdev) |
| 2933 | { |
| 2934 | unsigned long flags; |
| 2935 | |
| 2936 | SET_NETDEV_DEV(netdev, &pdev->dev); |
| 2937 | pci_set_drvdata(pdev, netdev); |
| 2938 | |
| 2939 | bnad->netdev = netdev; |
| 2940 | bnad->pcidev = pdev; |
| 2941 | bnad->mmio_start = pci_resource_start(pdev, 0); |
| 2942 | bnad->mmio_len = pci_resource_len(pdev, 0); |
| 2943 | bnad->bar0 = ioremap_nocache(bnad->mmio_start, bnad->mmio_len); |
| 2944 | if (!bnad->bar0) { |
| 2945 | dev_err(&pdev->dev, "ioremap for bar0 failed\n"); |
| 2946 | pci_set_drvdata(pdev, NULL); |
| 2947 | return -ENOMEM; |
| 2948 | } |
| 2949 | pr_info("bar0 mapped to %p, len %llu\n", bnad->bar0, |
| 2950 | (unsigned long long) bnad->mmio_len); |
| 2951 | |
| 2952 | spin_lock_irqsave(&bnad->bna_lock, flags); |
| 2953 | if (!bnad_msix_disable) |
| 2954 | bnad->cfg_flags = BNAD_CF_MSIX; |
| 2955 | |
| 2956 | bnad->cfg_flags |= BNAD_CF_DIM_ENABLED; |
| 2957 | |
| 2958 | bnad_q_num_init(bnad); |
| 2959 | spin_unlock_irqrestore(&bnad->bna_lock, flags); |
| 2960 | |
| 2961 | bnad->msix_num = (bnad->num_tx * bnad->num_txq_per_tx) + |
| 2962 | (bnad->num_rx * bnad->num_rxp_per_rx) + |
| 2963 | BNAD_MAILBOX_MSIX_VECTORS; |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 2964 | |
| 2965 | bnad->txq_depth = BNAD_TXQ_DEPTH; |
| 2966 | bnad->rxq_depth = BNAD_RXQ_DEPTH; |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 2967 | |
| 2968 | bnad->tx_coalescing_timeo = BFI_TX_COALESCING_TIMEO; |
| 2969 | bnad->rx_coalescing_timeo = BFI_RX_COALESCING_TIMEO; |
| 2970 | |
| 2971 | tasklet_init(&bnad->tx_free_tasklet, bnad_tx_free_tasklet, |
| 2972 | (unsigned long)bnad); |
| 2973 | |
| 2974 | return 0; |
| 2975 | } |
| 2976 | |
| 2977 | /* |
| 2978 | * Must be called after bnad_pci_uninit() |
| 2979 | * so that iounmap() and pci_set_drvdata(NULL) |
| 2980 | * happens only after PCI uninitialization. |
| 2981 | */ |
| 2982 | static void |
| 2983 | bnad_uninit(struct bnad *bnad) |
| 2984 | { |
| 2985 | if (bnad->bar0) |
| 2986 | iounmap(bnad->bar0); |
| 2987 | pci_set_drvdata(bnad->pcidev, NULL); |
| 2988 | } |
| 2989 | |
| 2990 | /* |
| 2991 | * Initialize locks |
| 2992 | a) Per device mutes used for serializing configuration |
| 2993 | changes from OS interface |
| 2994 | b) spin lock used to protect bna state machine |
| 2995 | */ |
| 2996 | static void |
| 2997 | bnad_lock_init(struct bnad *bnad) |
| 2998 | { |
| 2999 | spin_lock_init(&bnad->bna_lock); |
| 3000 | mutex_init(&bnad->conf_mutex); |
| 3001 | } |
| 3002 | |
| 3003 | static void |
| 3004 | bnad_lock_uninit(struct bnad *bnad) |
| 3005 | { |
| 3006 | mutex_destroy(&bnad->conf_mutex); |
| 3007 | } |
| 3008 | |
| 3009 | /* PCI Initialization */ |
| 3010 | static int |
| 3011 | bnad_pci_init(struct bnad *bnad, |
| 3012 | struct pci_dev *pdev, bool *using_dac) |
| 3013 | { |
| 3014 | int err; |
| 3015 | |
| 3016 | err = pci_enable_device(pdev); |
| 3017 | if (err) |
| 3018 | return err; |
| 3019 | err = pci_request_regions(pdev, BNAD_NAME); |
| 3020 | if (err) |
| 3021 | goto disable_device; |
Ivan Vecera | 5ea7431 | 2011-02-02 04:37:02 +0000 | [diff] [blame] | 3022 | if (!dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)) && |
| 3023 | !dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64))) { |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 3024 | *using_dac = 1; |
| 3025 | } else { |
Ivan Vecera | 5ea7431 | 2011-02-02 04:37:02 +0000 | [diff] [blame] | 3026 | err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)); |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 3027 | if (err) { |
Ivan Vecera | 5ea7431 | 2011-02-02 04:37:02 +0000 | [diff] [blame] | 3028 | err = dma_set_coherent_mask(&pdev->dev, |
| 3029 | DMA_BIT_MASK(32)); |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 3030 | if (err) |
| 3031 | goto release_regions; |
| 3032 | } |
| 3033 | *using_dac = 0; |
| 3034 | } |
| 3035 | pci_set_master(pdev); |
| 3036 | return 0; |
| 3037 | |
| 3038 | release_regions: |
| 3039 | pci_release_regions(pdev); |
| 3040 | disable_device: |
| 3041 | pci_disable_device(pdev); |
| 3042 | |
| 3043 | return err; |
| 3044 | } |
| 3045 | |
| 3046 | static void |
| 3047 | bnad_pci_uninit(struct pci_dev *pdev) |
| 3048 | { |
| 3049 | pci_release_regions(pdev); |
| 3050 | pci_disable_device(pdev); |
| 3051 | } |
| 3052 | |
| 3053 | static int __devinit |
| 3054 | bnad_pci_probe(struct pci_dev *pdev, |
| 3055 | const struct pci_device_id *pcidev_id) |
| 3056 | { |
Rasesh Mody | aad75b6 | 2010-12-23 21:45:08 +0000 | [diff] [blame] | 3057 | bool using_dac = false; |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 3058 | int err; |
| 3059 | struct bnad *bnad; |
| 3060 | struct bna *bna; |
| 3061 | struct net_device *netdev; |
| 3062 | struct bfa_pcidev pcidev_info; |
| 3063 | unsigned long flags; |
| 3064 | |
| 3065 | pr_info("bnad_pci_probe : (0x%p, 0x%p) PCI Func : (%d)\n", |
| 3066 | pdev, pcidev_id, PCI_FUNC(pdev->devfn)); |
| 3067 | |
| 3068 | mutex_lock(&bnad_fwimg_mutex); |
| 3069 | if (!cna_get_firmware_buf(pdev)) { |
| 3070 | mutex_unlock(&bnad_fwimg_mutex); |
| 3071 | pr_warn("Failed to load Firmware Image!\n"); |
| 3072 | return -ENODEV; |
| 3073 | } |
| 3074 | mutex_unlock(&bnad_fwimg_mutex); |
| 3075 | |
| 3076 | /* |
| 3077 | * Allocates sizeof(struct net_device + struct bnad) |
| 3078 | * bnad = netdev->priv |
| 3079 | */ |
| 3080 | netdev = alloc_etherdev(sizeof(struct bnad)); |
| 3081 | if (!netdev) { |
| 3082 | dev_err(&pdev->dev, "alloc_etherdev failed\n"); |
| 3083 | err = -ENOMEM; |
| 3084 | return err; |
| 3085 | } |
| 3086 | bnad = netdev_priv(netdev); |
| 3087 | |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 3088 | /* |
| 3089 | * PCI initialization |
| 3090 | * Output : using_dac = 1 for 64 bit DMA |
Rasesh Mody | be7fa32 | 2010-12-23 21:45:01 +0000 | [diff] [blame] | 3091 | * = 0 for 32 bit DMA |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 3092 | */ |
| 3093 | err = bnad_pci_init(bnad, pdev, &using_dac); |
| 3094 | if (err) |
| 3095 | goto free_netdev; |
| 3096 | |
| 3097 | bnad_lock_init(bnad); |
| 3098 | /* |
| 3099 | * Initialize bnad structure |
| 3100 | * Setup relation between pci_dev & netdev |
| 3101 | * Init Tx free tasklet |
| 3102 | */ |
| 3103 | err = bnad_init(bnad, pdev, netdev); |
| 3104 | if (err) |
| 3105 | goto pci_uninit; |
| 3106 | /* Initialize netdev structure, set up ethtool ops */ |
| 3107 | bnad_netdev_init(bnad, using_dac); |
| 3108 | |
Rasesh Mody | 815f41e | 2010-12-23 21:45:03 +0000 | [diff] [blame] | 3109 | /* Set link to down state */ |
| 3110 | netif_carrier_off(netdev); |
| 3111 | |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 3112 | bnad_enable_msix(bnad); |
| 3113 | |
| 3114 | /* Get resource requirement form bna */ |
| 3115 | bna_res_req(&bnad->res_info[0]); |
| 3116 | |
| 3117 | /* Allocate resources from bna */ |
| 3118 | err = bnad_res_alloc(bnad); |
| 3119 | if (err) |
| 3120 | goto free_netdev; |
| 3121 | |
| 3122 | bna = &bnad->bna; |
| 3123 | |
| 3124 | /* Setup pcidev_info for bna_init() */ |
| 3125 | pcidev_info.pci_slot = PCI_SLOT(bnad->pcidev->devfn); |
| 3126 | pcidev_info.pci_func = PCI_FUNC(bnad->pcidev->devfn); |
| 3127 | pcidev_info.device_id = bnad->pcidev->device; |
| 3128 | pcidev_info.pci_bar_kva = bnad->bar0; |
| 3129 | |
| 3130 | mutex_lock(&bnad->conf_mutex); |
| 3131 | |
| 3132 | spin_lock_irqsave(&bnad->bna_lock, flags); |
| 3133 | bna_init(bna, bnad, &pcidev_info, &bnad->res_info[0]); |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 3134 | spin_unlock_irqrestore(&bnad->bna_lock, flags); |
| 3135 | |
| 3136 | bnad->stats.bna_stats = &bna->stats; |
| 3137 | |
| 3138 | /* Set up timers */ |
| 3139 | setup_timer(&bnad->bna.device.ioc.ioc_timer, bnad_ioc_timeout, |
| 3140 | ((unsigned long)bnad)); |
| 3141 | setup_timer(&bnad->bna.device.ioc.hb_timer, bnad_ioc_hb_check, |
| 3142 | ((unsigned long)bnad)); |
Rasesh Mody | 1d32f76 | 2010-12-23 21:45:09 +0000 | [diff] [blame] | 3143 | setup_timer(&bnad->bna.device.ioc.iocpf_timer, bnad_iocpf_timeout, |
| 3144 | ((unsigned long)bnad)); |
| 3145 | setup_timer(&bnad->bna.device.ioc.sem_timer, bnad_iocpf_sem_timeout, |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 3146 | ((unsigned long)bnad)); |
| 3147 | |
| 3148 | /* Now start the timer before calling IOC */ |
Rasesh Mody | 1d32f76 | 2010-12-23 21:45:09 +0000 | [diff] [blame] | 3149 | mod_timer(&bnad->bna.device.ioc.iocpf_timer, |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 3150 | jiffies + msecs_to_jiffies(BNA_IOC_TIMER_FREQ)); |
| 3151 | |
| 3152 | /* |
| 3153 | * Start the chip |
| 3154 | * Don't care even if err != 0, bna state machine will |
| 3155 | * deal with it |
| 3156 | */ |
| 3157 | err = bnad_device_enable(bnad); |
| 3158 | |
| 3159 | /* Get the burnt-in mac */ |
| 3160 | spin_lock_irqsave(&bnad->bna_lock, flags); |
| 3161 | bna_port_mac_get(&bna->port, &bnad->perm_addr); |
| 3162 | bnad_set_netdev_perm_addr(bnad); |
| 3163 | spin_unlock_irqrestore(&bnad->bna_lock, flags); |
| 3164 | |
| 3165 | mutex_unlock(&bnad->conf_mutex); |
| 3166 | |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 3167 | /* Finally, reguister with net_device layer */ |
| 3168 | err = register_netdev(netdev); |
| 3169 | if (err) { |
| 3170 | pr_err("BNA : Registering with netdev failed\n"); |
| 3171 | goto disable_device; |
| 3172 | } |
| 3173 | |
| 3174 | return 0; |
| 3175 | |
| 3176 | disable_device: |
| 3177 | mutex_lock(&bnad->conf_mutex); |
| 3178 | bnad_device_disable(bnad); |
| 3179 | del_timer_sync(&bnad->bna.device.ioc.ioc_timer); |
| 3180 | del_timer_sync(&bnad->bna.device.ioc.sem_timer); |
| 3181 | del_timer_sync(&bnad->bna.device.ioc.hb_timer); |
| 3182 | spin_lock_irqsave(&bnad->bna_lock, flags); |
| 3183 | bna_uninit(bna); |
| 3184 | spin_unlock_irqrestore(&bnad->bna_lock, flags); |
| 3185 | mutex_unlock(&bnad->conf_mutex); |
| 3186 | |
| 3187 | bnad_res_free(bnad); |
| 3188 | bnad_disable_msix(bnad); |
| 3189 | pci_uninit: |
| 3190 | bnad_pci_uninit(pdev); |
| 3191 | bnad_lock_uninit(bnad); |
| 3192 | bnad_uninit(bnad); |
| 3193 | free_netdev: |
| 3194 | free_netdev(netdev); |
| 3195 | return err; |
| 3196 | } |
| 3197 | |
| 3198 | static void __devexit |
| 3199 | bnad_pci_remove(struct pci_dev *pdev) |
| 3200 | { |
| 3201 | struct net_device *netdev = pci_get_drvdata(pdev); |
| 3202 | struct bnad *bnad; |
| 3203 | struct bna *bna; |
| 3204 | unsigned long flags; |
| 3205 | |
| 3206 | if (!netdev) |
| 3207 | return; |
| 3208 | |
| 3209 | pr_info("%s bnad_pci_remove\n", netdev->name); |
| 3210 | bnad = netdev_priv(netdev); |
| 3211 | bna = &bnad->bna; |
| 3212 | |
| 3213 | unregister_netdev(netdev); |
| 3214 | |
| 3215 | mutex_lock(&bnad->conf_mutex); |
| 3216 | bnad_device_disable(bnad); |
| 3217 | del_timer_sync(&bnad->bna.device.ioc.ioc_timer); |
| 3218 | del_timer_sync(&bnad->bna.device.ioc.sem_timer); |
| 3219 | del_timer_sync(&bnad->bna.device.ioc.hb_timer); |
| 3220 | spin_lock_irqsave(&bnad->bna_lock, flags); |
| 3221 | bna_uninit(bna); |
| 3222 | spin_unlock_irqrestore(&bnad->bna_lock, flags); |
| 3223 | mutex_unlock(&bnad->conf_mutex); |
| 3224 | |
| 3225 | bnad_res_free(bnad); |
| 3226 | bnad_disable_msix(bnad); |
| 3227 | bnad_pci_uninit(pdev); |
| 3228 | bnad_lock_uninit(bnad); |
| 3229 | bnad_uninit(bnad); |
| 3230 | free_netdev(netdev); |
| 3231 | } |
| 3232 | |
Rasesh Mody | b7ee31c5 | 2010-10-05 15:46:05 +0000 | [diff] [blame] | 3233 | static const struct pci_device_id bnad_pci_id_table[] = { |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 3234 | { |
| 3235 | PCI_DEVICE(PCI_VENDOR_ID_BROCADE, |
| 3236 | PCI_DEVICE_ID_BROCADE_CT), |
| 3237 | .class = PCI_CLASS_NETWORK_ETHERNET << 8, |
| 3238 | .class_mask = 0xffff00 |
| 3239 | }, {0, } |
| 3240 | }; |
| 3241 | |
| 3242 | MODULE_DEVICE_TABLE(pci, bnad_pci_id_table); |
| 3243 | |
| 3244 | static struct pci_driver bnad_pci_driver = { |
| 3245 | .name = BNAD_NAME, |
| 3246 | .id_table = bnad_pci_id_table, |
| 3247 | .probe = bnad_pci_probe, |
| 3248 | .remove = __devexit_p(bnad_pci_remove), |
| 3249 | }; |
| 3250 | |
| 3251 | static int __init |
| 3252 | bnad_module_init(void) |
| 3253 | { |
| 3254 | int err; |
| 3255 | |
| 3256 | pr_info("Brocade 10G Ethernet driver\n"); |
| 3257 | |
Rasesh Mody | 8a89142 | 2010-08-25 23:00:27 -0700 | [diff] [blame] | 3258 | bfa_nw_ioc_auto_recover(bnad_ioc_auto_recover); |
Rasesh Mody | 8b230ed | 2010-08-23 20:24:12 -0700 | [diff] [blame] | 3259 | |
| 3260 | err = pci_register_driver(&bnad_pci_driver); |
| 3261 | if (err < 0) { |
| 3262 | pr_err("bna : PCI registration failed in module init " |
| 3263 | "(%d)\n", err); |
| 3264 | return err; |
| 3265 | } |
| 3266 | |
| 3267 | return 0; |
| 3268 | } |
| 3269 | |
| 3270 | static void __exit |
| 3271 | bnad_module_exit(void) |
| 3272 | { |
| 3273 | pci_unregister_driver(&bnad_pci_driver); |
| 3274 | |
| 3275 | if (bfi_fw) |
| 3276 | release_firmware(bfi_fw); |
| 3277 | } |
| 3278 | |
| 3279 | module_init(bnad_module_init); |
| 3280 | module_exit(bnad_module_exit); |
| 3281 | |
| 3282 | MODULE_AUTHOR("Brocade"); |
| 3283 | MODULE_LICENSE("GPL"); |
| 3284 | MODULE_DESCRIPTION("Brocade 10G PCIe Ethernet driver"); |
| 3285 | MODULE_VERSION(BNAD_VERSION); |
| 3286 | MODULE_FIRMWARE(CNA_FW_FILE_CT); |