Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 1 | /****************************************************************************** |
| 2 | * This software may be used and distributed according to the terms of |
| 3 | * the GNU General Public License (GPL), incorporated herein by reference. |
| 4 | * Drivers based on or derived from this code fall under the GPL and must |
| 5 | * retain the authorship, copyright and license notice. This file is not |
| 6 | * a complete program and may only be used when the entire operating |
| 7 | * system is licensed under the GPL. |
| 8 | * See the file COPYING in this distribution for more information. |
| 9 | * |
| 10 | * vxge-main.c: Driver for Neterion Inc's X3100 Series 10GbE PCIe I/O |
| 11 | * Virtualized Server Adapter. |
| 12 | * Copyright(c) 2002-2009 Neterion Inc. |
| 13 | * |
| 14 | * The module loadable parameters that are supported by the driver and a brief |
| 15 | * explanation of all the variables: |
| 16 | * vlan_tag_strip: |
| 17 | * Strip VLAN Tag enable/disable. Instructs the device to remove |
| 18 | * the VLAN tag from all received tagged frames that are not |
| 19 | * replicated at the internal L2 switch. |
| 20 | * 0 - Do not strip the VLAN tag. |
| 21 | * 1 - Strip the VLAN tag. |
| 22 | * |
| 23 | * addr_learn_en: |
| 24 | * Enable learning the mac address of the guest OS interface in |
| 25 | * a virtualization environment. |
| 26 | * 0 - DISABLE |
| 27 | * 1 - ENABLE |
| 28 | * |
| 29 | * max_config_port: |
| 30 | * Maximum number of port to be supported. |
| 31 | * MIN -1 and MAX - 2 |
| 32 | * |
| 33 | * max_config_vpath: |
| 34 | * This configures the maximum no of VPATH configures for each |
| 35 | * device function. |
| 36 | * MIN - 1 and MAX - 17 |
| 37 | * |
| 38 | * max_config_dev: |
| 39 | * This configures maximum no of Device function to be enabled. |
| 40 | * MIN - 1 and MAX - 17 |
| 41 | * |
| 42 | ******************************************************************************/ |
| 43 | |
| 44 | #include <linux/if_vlan.h> |
| 45 | #include <linux/pci.h> |
Alexander Beregalov | 2b05e00 | 2009-04-04 16:36:18 -0700 | [diff] [blame] | 46 | #include <linux/tcp.h> |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 47 | #include <net/ip.h> |
| 48 | #include <linux/netdevice.h> |
| 49 | #include <linux/etherdevice.h> |
| 50 | #include "vxge-main.h" |
| 51 | #include "vxge-reg.h" |
| 52 | |
| 53 | MODULE_LICENSE("Dual BSD/GPL"); |
| 54 | MODULE_DESCRIPTION("Neterion's X3100 Series 10GbE PCIe I/O" |
| 55 | "Virtualized Server Adapter"); |
| 56 | |
Alexey Dobriyan | a3aa188 | 2010-01-07 11:58:11 +0000 | [diff] [blame] | 57 | static DEFINE_PCI_DEVICE_TABLE(vxge_id_table) = { |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 58 | {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_TITAN_WIN, PCI_ANY_ID, |
| 59 | PCI_ANY_ID}, |
| 60 | {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_TITAN_UNI, PCI_ANY_ID, |
| 61 | PCI_ANY_ID}, |
| 62 | {0} |
| 63 | }; |
| 64 | |
| 65 | MODULE_DEVICE_TABLE(pci, vxge_id_table); |
| 66 | |
| 67 | VXGE_MODULE_PARAM_INT(vlan_tag_strip, VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE); |
| 68 | VXGE_MODULE_PARAM_INT(addr_learn_en, VXGE_HW_MAC_ADDR_LEARN_DEFAULT); |
| 69 | VXGE_MODULE_PARAM_INT(max_config_port, VXGE_MAX_CONFIG_PORT); |
| 70 | VXGE_MODULE_PARAM_INT(max_config_vpath, VXGE_USE_DEFAULT); |
| 71 | VXGE_MODULE_PARAM_INT(max_mac_vpath, VXGE_MAX_MAC_ADDR_COUNT); |
| 72 | VXGE_MODULE_PARAM_INT(max_config_dev, VXGE_MAX_CONFIG_DEV); |
| 73 | |
| 74 | static u16 vpath_selector[VXGE_HW_MAX_VIRTUAL_PATHS] = |
| 75 | {0, 1, 3, 3, 7, 7, 7, 7, 15, 15, 15, 15, 15, 15, 15, 15, 31}; |
| 76 | static unsigned int bw_percentage[VXGE_HW_MAX_VIRTUAL_PATHS] = |
| 77 | {[0 ...(VXGE_HW_MAX_VIRTUAL_PATHS - 1)] = 0xFF}; |
| 78 | module_param_array(bw_percentage, uint, NULL, 0); |
| 79 | |
| 80 | static struct vxge_drv_config *driver_config; |
| 81 | |
| 82 | static inline int is_vxge_card_up(struct vxgedev *vdev) |
| 83 | { |
| 84 | return test_bit(__VXGE_STATE_CARD_UP, &vdev->state); |
| 85 | } |
| 86 | |
| 87 | static inline void VXGE_COMPLETE_VPATH_TX(struct vxge_fifo *fifo) |
| 88 | { |
| 89 | unsigned long flags = 0; |
Benjamin LaHaise | ff67df5 | 2009-08-04 10:21:03 +0000 | [diff] [blame] | 90 | struct sk_buff **skb_ptr = NULL; |
| 91 | struct sk_buff **temp; |
| 92 | #define NR_SKB_COMPLETED 128 |
| 93 | struct sk_buff *completed[NR_SKB_COMPLETED]; |
| 94 | int more; |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 95 | |
Benjamin LaHaise | ff67df5 | 2009-08-04 10:21:03 +0000 | [diff] [blame] | 96 | do { |
| 97 | more = 0; |
| 98 | skb_ptr = completed; |
| 99 | |
| 100 | if (spin_trylock_irqsave(&fifo->tx_lock, flags)) { |
| 101 | vxge_hw_vpath_poll_tx(fifo->handle, &skb_ptr, |
| 102 | NR_SKB_COMPLETED, &more); |
| 103 | spin_unlock_irqrestore(&fifo->tx_lock, flags); |
| 104 | } |
| 105 | /* free SKBs */ |
| 106 | for (temp = completed; temp != skb_ptr; temp++) |
| 107 | dev_kfree_skb_irq(*temp); |
| 108 | } while (more) ; |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 109 | } |
| 110 | |
| 111 | static inline void VXGE_COMPLETE_ALL_TX(struct vxgedev *vdev) |
| 112 | { |
| 113 | int i; |
| 114 | |
| 115 | /* Complete all transmits */ |
| 116 | for (i = 0; i < vdev->no_of_vpath; i++) |
| 117 | VXGE_COMPLETE_VPATH_TX(&vdev->vpaths[i].fifo); |
| 118 | } |
| 119 | |
| 120 | static inline void VXGE_COMPLETE_ALL_RX(struct vxgedev *vdev) |
| 121 | { |
| 122 | int i; |
| 123 | struct vxge_ring *ring; |
| 124 | |
| 125 | /* Complete all receives*/ |
| 126 | for (i = 0; i < vdev->no_of_vpath; i++) { |
| 127 | ring = &vdev->vpaths[i].ring; |
| 128 | vxge_hw_vpath_poll_rx(ring->handle); |
| 129 | } |
| 130 | } |
| 131 | |
| 132 | /* |
| 133 | * MultiQ manipulation helper functions |
| 134 | */ |
| 135 | void vxge_stop_all_tx_queue(struct vxgedev *vdev) |
| 136 | { |
| 137 | int i; |
| 138 | struct net_device *dev = vdev->ndev; |
| 139 | |
| 140 | if (vdev->config.tx_steering_type != TX_MULTIQ_STEERING) { |
| 141 | for (i = 0; i < vdev->no_of_vpath; i++) |
| 142 | vdev->vpaths[i].fifo.queue_state = VPATH_QUEUE_STOP; |
| 143 | } |
| 144 | netif_tx_stop_all_queues(dev); |
| 145 | } |
| 146 | |
| 147 | void vxge_stop_tx_queue(struct vxge_fifo *fifo) |
| 148 | { |
| 149 | struct net_device *dev = fifo->ndev; |
| 150 | |
| 151 | struct netdev_queue *txq = NULL; |
| 152 | if (fifo->tx_steering_type == TX_MULTIQ_STEERING) |
| 153 | txq = netdev_get_tx_queue(dev, fifo->driver_id); |
| 154 | else { |
| 155 | txq = netdev_get_tx_queue(dev, 0); |
| 156 | fifo->queue_state = VPATH_QUEUE_STOP; |
| 157 | } |
| 158 | |
| 159 | netif_tx_stop_queue(txq); |
| 160 | } |
| 161 | |
| 162 | void vxge_start_all_tx_queue(struct vxgedev *vdev) |
| 163 | { |
| 164 | int i; |
| 165 | struct net_device *dev = vdev->ndev; |
| 166 | |
| 167 | if (vdev->config.tx_steering_type != TX_MULTIQ_STEERING) { |
| 168 | for (i = 0; i < vdev->no_of_vpath; i++) |
| 169 | vdev->vpaths[i].fifo.queue_state = VPATH_QUEUE_START; |
| 170 | } |
| 171 | netif_tx_start_all_queues(dev); |
| 172 | } |
| 173 | |
| 174 | static void vxge_wake_all_tx_queue(struct vxgedev *vdev) |
| 175 | { |
| 176 | int i; |
| 177 | struct net_device *dev = vdev->ndev; |
| 178 | |
| 179 | if (vdev->config.tx_steering_type != TX_MULTIQ_STEERING) { |
| 180 | for (i = 0; i < vdev->no_of_vpath; i++) |
| 181 | vdev->vpaths[i].fifo.queue_state = VPATH_QUEUE_START; |
| 182 | } |
| 183 | netif_tx_wake_all_queues(dev); |
| 184 | } |
| 185 | |
| 186 | void vxge_wake_tx_queue(struct vxge_fifo *fifo, struct sk_buff *skb) |
| 187 | { |
| 188 | struct net_device *dev = fifo->ndev; |
| 189 | |
| 190 | int vpath_no = fifo->driver_id; |
| 191 | struct netdev_queue *txq = NULL; |
| 192 | if (fifo->tx_steering_type == TX_MULTIQ_STEERING) { |
| 193 | txq = netdev_get_tx_queue(dev, vpath_no); |
| 194 | if (netif_tx_queue_stopped(txq)) |
| 195 | netif_tx_wake_queue(txq); |
| 196 | } else { |
| 197 | txq = netdev_get_tx_queue(dev, 0); |
| 198 | if (fifo->queue_state == VPATH_QUEUE_STOP) |
| 199 | if (netif_tx_queue_stopped(txq)) { |
| 200 | fifo->queue_state = VPATH_QUEUE_START; |
| 201 | netif_tx_wake_queue(txq); |
| 202 | } |
| 203 | } |
| 204 | } |
| 205 | |
| 206 | /* |
| 207 | * vxge_callback_link_up |
| 208 | * |
| 209 | * This function is called during interrupt context to notify link up state |
| 210 | * change. |
| 211 | */ |
| 212 | void |
| 213 | vxge_callback_link_up(struct __vxge_hw_device *hldev) |
| 214 | { |
| 215 | struct net_device *dev = hldev->ndev; |
| 216 | struct vxgedev *vdev = (struct vxgedev *)netdev_priv(dev); |
| 217 | |
| 218 | vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d", |
| 219 | vdev->ndev->name, __func__, __LINE__); |
| 220 | printk(KERN_NOTICE "%s: Link Up\n", vdev->ndev->name); |
| 221 | vdev->stats.link_up++; |
| 222 | |
| 223 | netif_carrier_on(vdev->ndev); |
| 224 | vxge_wake_all_tx_queue(vdev); |
| 225 | |
| 226 | vxge_debug_entryexit(VXGE_TRACE, |
| 227 | "%s: %s:%d Exiting...", vdev->ndev->name, __func__, __LINE__); |
| 228 | } |
| 229 | |
| 230 | /* |
| 231 | * vxge_callback_link_down |
| 232 | * |
| 233 | * This function is called during interrupt context to notify link down state |
| 234 | * change. |
| 235 | */ |
| 236 | void |
| 237 | vxge_callback_link_down(struct __vxge_hw_device *hldev) |
| 238 | { |
| 239 | struct net_device *dev = hldev->ndev; |
| 240 | struct vxgedev *vdev = (struct vxgedev *)netdev_priv(dev); |
| 241 | |
| 242 | vxge_debug_entryexit(VXGE_TRACE, |
| 243 | "%s: %s:%d", vdev->ndev->name, __func__, __LINE__); |
| 244 | printk(KERN_NOTICE "%s: Link Down\n", vdev->ndev->name); |
| 245 | |
| 246 | vdev->stats.link_down++; |
| 247 | netif_carrier_off(vdev->ndev); |
| 248 | vxge_stop_all_tx_queue(vdev); |
| 249 | |
| 250 | vxge_debug_entryexit(VXGE_TRACE, |
| 251 | "%s: %s:%d Exiting...", vdev->ndev->name, __func__, __LINE__); |
| 252 | } |
| 253 | |
| 254 | /* |
| 255 | * vxge_rx_alloc |
| 256 | * |
| 257 | * Allocate SKB. |
| 258 | */ |
| 259 | static struct sk_buff* |
| 260 | vxge_rx_alloc(void *dtrh, struct vxge_ring *ring, const int skb_size) |
| 261 | { |
| 262 | struct net_device *dev; |
| 263 | struct sk_buff *skb; |
| 264 | struct vxge_rx_priv *rx_priv; |
| 265 | |
| 266 | dev = ring->ndev; |
| 267 | vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d", |
| 268 | ring->ndev->name, __func__, __LINE__); |
| 269 | |
| 270 | rx_priv = vxge_hw_ring_rxd_private_get(dtrh); |
| 271 | |
| 272 | /* try to allocate skb first. this one may fail */ |
| 273 | skb = netdev_alloc_skb(dev, skb_size + |
| 274 | VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN); |
| 275 | if (skb == NULL) { |
| 276 | vxge_debug_mem(VXGE_ERR, |
| 277 | "%s: out of memory to allocate SKB", dev->name); |
| 278 | ring->stats.skb_alloc_fail++; |
| 279 | return NULL; |
| 280 | } |
| 281 | |
| 282 | vxge_debug_mem(VXGE_TRACE, |
| 283 | "%s: %s:%d Skb : 0x%p", ring->ndev->name, |
| 284 | __func__, __LINE__, skb); |
| 285 | |
| 286 | skb_reserve(skb, VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN); |
| 287 | |
| 288 | rx_priv->skb = skb; |
Benjamin LaHaise | ea11bbe | 2009-08-04 10:21:57 +0000 | [diff] [blame] | 289 | rx_priv->skb_data = NULL; |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 290 | rx_priv->data_size = skb_size; |
| 291 | vxge_debug_entryexit(VXGE_TRACE, |
| 292 | "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__); |
| 293 | |
| 294 | return skb; |
| 295 | } |
| 296 | |
| 297 | /* |
| 298 | * vxge_rx_map |
| 299 | */ |
| 300 | static int vxge_rx_map(void *dtrh, struct vxge_ring *ring) |
| 301 | { |
| 302 | struct vxge_rx_priv *rx_priv; |
| 303 | dma_addr_t dma_addr; |
| 304 | |
| 305 | vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d", |
| 306 | ring->ndev->name, __func__, __LINE__); |
| 307 | rx_priv = vxge_hw_ring_rxd_private_get(dtrh); |
| 308 | |
Benjamin LaHaise | ea11bbe | 2009-08-04 10:21:57 +0000 | [diff] [blame] | 309 | rx_priv->skb_data = rx_priv->skb->data; |
| 310 | dma_addr = pci_map_single(ring->pdev, rx_priv->skb_data, |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 311 | rx_priv->data_size, PCI_DMA_FROMDEVICE); |
| 312 | |
Denis Kirjanov | fa15e99 | 2010-01-10 13:40:10 -0800 | [diff] [blame] | 313 | if (unlikely(pci_dma_mapping_error(ring->pdev, dma_addr))) { |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 314 | ring->stats.pci_map_fail++; |
| 315 | return -EIO; |
| 316 | } |
| 317 | vxge_debug_mem(VXGE_TRACE, |
| 318 | "%s: %s:%d 1 buffer mode dma_addr = 0x%llx", |
| 319 | ring->ndev->name, __func__, __LINE__, |
| 320 | (unsigned long long)dma_addr); |
| 321 | vxge_hw_ring_rxd_1b_set(dtrh, dma_addr, rx_priv->data_size); |
| 322 | |
| 323 | rx_priv->data_dma = dma_addr; |
| 324 | vxge_debug_entryexit(VXGE_TRACE, |
| 325 | "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__); |
| 326 | |
| 327 | return 0; |
| 328 | } |
| 329 | |
| 330 | /* |
| 331 | * vxge_rx_initial_replenish |
| 332 | * Allocation of RxD as an initial replenish procedure. |
| 333 | */ |
| 334 | static enum vxge_hw_status |
| 335 | vxge_rx_initial_replenish(void *dtrh, void *userdata) |
| 336 | { |
| 337 | struct vxge_ring *ring = (struct vxge_ring *)userdata; |
| 338 | struct vxge_rx_priv *rx_priv; |
| 339 | |
| 340 | vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d", |
| 341 | ring->ndev->name, __func__, __LINE__); |
| 342 | if (vxge_rx_alloc(dtrh, ring, |
| 343 | VXGE_LL_MAX_FRAME_SIZE(ring->ndev)) == NULL) |
| 344 | return VXGE_HW_FAIL; |
| 345 | |
| 346 | if (vxge_rx_map(dtrh, ring)) { |
| 347 | rx_priv = vxge_hw_ring_rxd_private_get(dtrh); |
| 348 | dev_kfree_skb(rx_priv->skb); |
| 349 | |
| 350 | return VXGE_HW_FAIL; |
| 351 | } |
| 352 | vxge_debug_entryexit(VXGE_TRACE, |
| 353 | "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__); |
| 354 | |
| 355 | return VXGE_HW_OK; |
| 356 | } |
| 357 | |
| 358 | static inline void |
| 359 | vxge_rx_complete(struct vxge_ring *ring, struct sk_buff *skb, u16 vlan, |
| 360 | int pkt_length, struct vxge_hw_ring_rxd_info *ext_info) |
| 361 | { |
| 362 | |
| 363 | vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d", |
| 364 | ring->ndev->name, __func__, __LINE__); |
| 365 | skb_record_rx_queue(skb, ring->driver_id); |
| 366 | skb->protocol = eth_type_trans(skb, ring->ndev); |
| 367 | |
| 368 | ring->stats.rx_frms++; |
| 369 | ring->stats.rx_bytes += pkt_length; |
| 370 | |
| 371 | if (skb->pkt_type == PACKET_MULTICAST) |
| 372 | ring->stats.rx_mcast++; |
| 373 | |
| 374 | vxge_debug_rx(VXGE_TRACE, |
| 375 | "%s: %s:%d skb protocol = %d", |
| 376 | ring->ndev->name, __func__, __LINE__, skb->protocol); |
| 377 | |
| 378 | if (ring->gro_enable) { |
| 379 | if (ring->vlgrp && ext_info->vlan && |
| 380 | (ring->vlan_tag_strip == |
| 381 | VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE)) |
Sreenivasa Honnur | a5d165b | 2009-07-01 21:16:37 +0000 | [diff] [blame] | 382 | vlan_gro_receive(ring->napi_p, ring->vlgrp, |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 383 | ext_info->vlan, skb); |
| 384 | else |
Sreenivasa Honnur | a5d165b | 2009-07-01 21:16:37 +0000 | [diff] [blame] | 385 | napi_gro_receive(ring->napi_p, skb); |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 386 | } else { |
| 387 | if (ring->vlgrp && vlan && |
| 388 | (ring->vlan_tag_strip == |
| 389 | VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE)) |
| 390 | vlan_hwaccel_receive_skb(skb, ring->vlgrp, vlan); |
| 391 | else |
| 392 | netif_receive_skb(skb); |
| 393 | } |
| 394 | vxge_debug_entryexit(VXGE_TRACE, |
| 395 | "%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__); |
| 396 | } |
| 397 | |
| 398 | static inline void vxge_re_pre_post(void *dtr, struct vxge_ring *ring, |
| 399 | struct vxge_rx_priv *rx_priv) |
| 400 | { |
| 401 | pci_dma_sync_single_for_device(ring->pdev, |
| 402 | rx_priv->data_dma, rx_priv->data_size, PCI_DMA_FROMDEVICE); |
| 403 | |
| 404 | vxge_hw_ring_rxd_1b_set(dtr, rx_priv->data_dma, rx_priv->data_size); |
| 405 | vxge_hw_ring_rxd_pre_post(ring->handle, dtr); |
| 406 | } |
| 407 | |
| 408 | static inline void vxge_post(int *dtr_cnt, void **first_dtr, |
| 409 | void *post_dtr, struct __vxge_hw_ring *ringh) |
| 410 | { |
| 411 | int dtr_count = *dtr_cnt; |
| 412 | if ((*dtr_cnt % VXGE_HW_RXSYNC_FREQ_CNT) == 0) { |
| 413 | if (*first_dtr) |
| 414 | vxge_hw_ring_rxd_post_post_wmb(ringh, *first_dtr); |
| 415 | *first_dtr = post_dtr; |
| 416 | } else |
| 417 | vxge_hw_ring_rxd_post_post(ringh, post_dtr); |
| 418 | dtr_count++; |
| 419 | *dtr_cnt = dtr_count; |
| 420 | } |
| 421 | |
| 422 | /* |
| 423 | * vxge_rx_1b_compl |
| 424 | * |
| 425 | * If the interrupt is because of a received frame or if the receive ring |
| 426 | * contains fresh as yet un-processed frames, this function is called. |
| 427 | */ |
| 428 | enum vxge_hw_status |
| 429 | vxge_rx_1b_compl(struct __vxge_hw_ring *ringh, void *dtr, |
| 430 | u8 t_code, void *userdata) |
| 431 | { |
| 432 | struct vxge_ring *ring = (struct vxge_ring *)userdata; |
| 433 | struct net_device *dev = ring->ndev; |
| 434 | unsigned int dma_sizes; |
| 435 | void *first_dtr = NULL; |
| 436 | int dtr_cnt = 0; |
| 437 | int data_size; |
| 438 | dma_addr_t data_dma; |
| 439 | int pkt_length; |
| 440 | struct sk_buff *skb; |
| 441 | struct vxge_rx_priv *rx_priv; |
| 442 | struct vxge_hw_ring_rxd_info ext_info; |
| 443 | vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d", |
| 444 | ring->ndev->name, __func__, __LINE__); |
| 445 | ring->pkts_processed = 0; |
| 446 | |
Sreenivasa Honnur | 3363276 | 2010-03-28 22:08:30 +0000 | [diff] [blame] | 447 | vxge_hw_ring_replenish(ringh); |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 448 | |
| 449 | do { |
Benjamin LaHaise | 3f23e43 | 2009-08-04 10:21:39 +0000 | [diff] [blame] | 450 | prefetch((char *)dtr + L1_CACHE_BYTES); |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 451 | rx_priv = vxge_hw_ring_rxd_private_get(dtr); |
| 452 | skb = rx_priv->skb; |
| 453 | data_size = rx_priv->data_size; |
| 454 | data_dma = rx_priv->data_dma; |
Benjamin LaHaise | ea11bbe | 2009-08-04 10:21:57 +0000 | [diff] [blame] | 455 | prefetch(rx_priv->skb_data); |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 456 | |
| 457 | vxge_debug_rx(VXGE_TRACE, |
| 458 | "%s: %s:%d skb = 0x%p", |
| 459 | ring->ndev->name, __func__, __LINE__, skb); |
| 460 | |
| 461 | vxge_hw_ring_rxd_1b_get(ringh, dtr, &dma_sizes); |
| 462 | pkt_length = dma_sizes; |
| 463 | |
Sreenivasa Honnur | 22fa125 | 2009-07-01 21:17:24 +0000 | [diff] [blame] | 464 | pkt_length -= ETH_FCS_LEN; |
| 465 | |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 466 | vxge_debug_rx(VXGE_TRACE, |
| 467 | "%s: %s:%d Packet Length = %d", |
| 468 | ring->ndev->name, __func__, __LINE__, pkt_length); |
| 469 | |
| 470 | vxge_hw_ring_rxd_1b_info_get(ringh, dtr, &ext_info); |
| 471 | |
| 472 | /* check skb validity */ |
| 473 | vxge_assert(skb); |
| 474 | |
| 475 | prefetch((char *)skb + L1_CACHE_BYTES); |
| 476 | if (unlikely(t_code)) { |
| 477 | |
| 478 | if (vxge_hw_ring_handle_tcode(ringh, dtr, t_code) != |
| 479 | VXGE_HW_OK) { |
| 480 | |
| 481 | ring->stats.rx_errors++; |
| 482 | vxge_debug_rx(VXGE_TRACE, |
| 483 | "%s: %s :%d Rx T_code is %d", |
| 484 | ring->ndev->name, __func__, |
| 485 | __LINE__, t_code); |
| 486 | |
| 487 | /* If the t_code is not supported and if the |
| 488 | * t_code is other than 0x5 (unparseable packet |
| 489 | * such as unknown UPV6 header), Drop it !!! |
| 490 | */ |
| 491 | vxge_re_pre_post(dtr, ring, rx_priv); |
| 492 | |
| 493 | vxge_post(&dtr_cnt, &first_dtr, dtr, ringh); |
| 494 | ring->stats.rx_dropped++; |
| 495 | continue; |
| 496 | } |
| 497 | } |
| 498 | |
| 499 | if (pkt_length > VXGE_LL_RX_COPY_THRESHOLD) { |
| 500 | |
| 501 | if (vxge_rx_alloc(dtr, ring, data_size) != NULL) { |
| 502 | |
| 503 | if (!vxge_rx_map(dtr, ring)) { |
| 504 | skb_put(skb, pkt_length); |
| 505 | |
| 506 | pci_unmap_single(ring->pdev, data_dma, |
| 507 | data_size, PCI_DMA_FROMDEVICE); |
| 508 | |
| 509 | vxge_hw_ring_rxd_pre_post(ringh, dtr); |
| 510 | vxge_post(&dtr_cnt, &first_dtr, dtr, |
| 511 | ringh); |
| 512 | } else { |
| 513 | dev_kfree_skb(rx_priv->skb); |
| 514 | rx_priv->skb = skb; |
| 515 | rx_priv->data_size = data_size; |
| 516 | vxge_re_pre_post(dtr, ring, rx_priv); |
| 517 | |
| 518 | vxge_post(&dtr_cnt, &first_dtr, dtr, |
| 519 | ringh); |
| 520 | ring->stats.rx_dropped++; |
| 521 | break; |
| 522 | } |
| 523 | } else { |
| 524 | vxge_re_pre_post(dtr, ring, rx_priv); |
| 525 | |
| 526 | vxge_post(&dtr_cnt, &first_dtr, dtr, ringh); |
| 527 | ring->stats.rx_dropped++; |
| 528 | break; |
| 529 | } |
| 530 | } else { |
| 531 | struct sk_buff *skb_up; |
| 532 | |
| 533 | skb_up = netdev_alloc_skb(dev, pkt_length + |
| 534 | VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN); |
| 535 | if (skb_up != NULL) { |
| 536 | skb_reserve(skb_up, |
| 537 | VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN); |
| 538 | |
| 539 | pci_dma_sync_single_for_cpu(ring->pdev, |
| 540 | data_dma, data_size, |
| 541 | PCI_DMA_FROMDEVICE); |
| 542 | |
| 543 | vxge_debug_mem(VXGE_TRACE, |
| 544 | "%s: %s:%d skb_up = %p", |
| 545 | ring->ndev->name, __func__, |
| 546 | __LINE__, skb); |
| 547 | memcpy(skb_up->data, skb->data, pkt_length); |
| 548 | |
| 549 | vxge_re_pre_post(dtr, ring, rx_priv); |
| 550 | |
| 551 | vxge_post(&dtr_cnt, &first_dtr, dtr, |
| 552 | ringh); |
| 553 | /* will netif_rx small SKB instead */ |
| 554 | skb = skb_up; |
| 555 | skb_put(skb, pkt_length); |
| 556 | } else { |
| 557 | vxge_re_pre_post(dtr, ring, rx_priv); |
| 558 | |
| 559 | vxge_post(&dtr_cnt, &first_dtr, dtr, ringh); |
| 560 | vxge_debug_rx(VXGE_ERR, |
| 561 | "%s: vxge_rx_1b_compl: out of " |
| 562 | "memory", dev->name); |
| 563 | ring->stats.skb_alloc_fail++; |
| 564 | break; |
| 565 | } |
| 566 | } |
| 567 | |
| 568 | if ((ext_info.proto & VXGE_HW_FRAME_PROTO_TCP_OR_UDP) && |
| 569 | !(ext_info.proto & VXGE_HW_FRAME_PROTO_IP_FRAG) && |
| 570 | ring->rx_csum && /* Offload Rx side CSUM */ |
| 571 | ext_info.l3_cksum == VXGE_HW_L3_CKSUM_OK && |
| 572 | ext_info.l4_cksum == VXGE_HW_L4_CKSUM_OK) |
| 573 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
| 574 | else |
| 575 | skb->ip_summed = CHECKSUM_NONE; |
| 576 | |
| 577 | vxge_rx_complete(ring, skb, ext_info.vlan, |
| 578 | pkt_length, &ext_info); |
| 579 | |
| 580 | ring->budget--; |
| 581 | ring->pkts_processed++; |
| 582 | if (!ring->budget) |
| 583 | break; |
| 584 | |
| 585 | } while (vxge_hw_ring_rxd_next_completed(ringh, &dtr, |
| 586 | &t_code) == VXGE_HW_OK); |
| 587 | |
| 588 | if (first_dtr) |
| 589 | vxge_hw_ring_rxd_post_post_wmb(ringh, first_dtr); |
| 590 | |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 591 | vxge_debug_entryexit(VXGE_TRACE, |
| 592 | "%s:%d Exiting...", |
| 593 | __func__, __LINE__); |
| 594 | return VXGE_HW_OK; |
| 595 | } |
| 596 | |
| 597 | /* |
| 598 | * vxge_xmit_compl |
| 599 | * |
| 600 | * If an interrupt was raised to indicate DMA complete of the Tx packet, |
| 601 | * this function is called. It identifies the last TxD whose buffer was |
| 602 | * freed and frees all skbs whose data have already DMA'ed into the NICs |
| 603 | * internal memory. |
| 604 | */ |
| 605 | enum vxge_hw_status |
| 606 | vxge_xmit_compl(struct __vxge_hw_fifo *fifo_hw, void *dtr, |
| 607 | enum vxge_hw_fifo_tcode t_code, void *userdata, |
Benjamin LaHaise | ff67df5 | 2009-08-04 10:21:03 +0000 | [diff] [blame] | 608 | struct sk_buff ***skb_ptr, int nr_skb, int *more) |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 609 | { |
| 610 | struct vxge_fifo *fifo = (struct vxge_fifo *)userdata; |
Benjamin LaHaise | ff67df5 | 2009-08-04 10:21:03 +0000 | [diff] [blame] | 611 | struct sk_buff *skb, **done_skb = *skb_ptr; |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 612 | int pkt_cnt = 0; |
| 613 | |
| 614 | vxge_debug_entryexit(VXGE_TRACE, |
| 615 | "%s:%d Entered....", __func__, __LINE__); |
| 616 | |
| 617 | do { |
| 618 | int frg_cnt; |
| 619 | skb_frag_t *frag; |
| 620 | int i = 0, j; |
| 621 | struct vxge_tx_priv *txd_priv = |
| 622 | vxge_hw_fifo_txdl_private_get(dtr); |
| 623 | |
| 624 | skb = txd_priv->skb; |
| 625 | frg_cnt = skb_shinfo(skb)->nr_frags; |
| 626 | frag = &skb_shinfo(skb)->frags[0]; |
| 627 | |
| 628 | vxge_debug_tx(VXGE_TRACE, |
| 629 | "%s: %s:%d fifo_hw = %p dtr = %p " |
| 630 | "tcode = 0x%x", fifo->ndev->name, __func__, |
| 631 | __LINE__, fifo_hw, dtr, t_code); |
| 632 | /* check skb validity */ |
| 633 | vxge_assert(skb); |
| 634 | vxge_debug_tx(VXGE_TRACE, |
| 635 | "%s: %s:%d skb = %p itxd_priv = %p frg_cnt = %d", |
| 636 | fifo->ndev->name, __func__, __LINE__, |
| 637 | skb, txd_priv, frg_cnt); |
| 638 | if (unlikely(t_code)) { |
| 639 | fifo->stats.tx_errors++; |
| 640 | vxge_debug_tx(VXGE_ERR, |
| 641 | "%s: tx: dtr %p completed due to " |
| 642 | "error t_code %01x", fifo->ndev->name, |
| 643 | dtr, t_code); |
| 644 | vxge_hw_fifo_handle_tcode(fifo_hw, dtr, t_code); |
| 645 | } |
| 646 | |
| 647 | /* for unfragmented skb */ |
| 648 | pci_unmap_single(fifo->pdev, txd_priv->dma_buffers[i++], |
| 649 | skb_headlen(skb), PCI_DMA_TODEVICE); |
| 650 | |
| 651 | for (j = 0; j < frg_cnt; j++) { |
| 652 | pci_unmap_page(fifo->pdev, |
| 653 | txd_priv->dma_buffers[i++], |
| 654 | frag->size, PCI_DMA_TODEVICE); |
| 655 | frag += 1; |
| 656 | } |
| 657 | |
| 658 | vxge_hw_fifo_txdl_free(fifo_hw, dtr); |
| 659 | |
| 660 | /* Updating the statistics block */ |
| 661 | fifo->stats.tx_frms++; |
| 662 | fifo->stats.tx_bytes += skb->len; |
| 663 | |
Benjamin LaHaise | ff67df5 | 2009-08-04 10:21:03 +0000 | [diff] [blame] | 664 | *done_skb++ = skb; |
| 665 | |
| 666 | if (--nr_skb <= 0) { |
| 667 | *more = 1; |
| 668 | break; |
| 669 | } |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 670 | |
| 671 | pkt_cnt++; |
| 672 | if (pkt_cnt > fifo->indicate_max_pkts) |
| 673 | break; |
| 674 | |
| 675 | } while (vxge_hw_fifo_txdl_next_completed(fifo_hw, |
| 676 | &dtr, &t_code) == VXGE_HW_OK); |
| 677 | |
Benjamin LaHaise | ff67df5 | 2009-08-04 10:21:03 +0000 | [diff] [blame] | 678 | *skb_ptr = done_skb; |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 679 | vxge_wake_tx_queue(fifo, skb); |
| 680 | |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 681 | vxge_debug_entryexit(VXGE_TRACE, |
| 682 | "%s: %s:%d Exiting...", |
| 683 | fifo->ndev->name, __func__, __LINE__); |
| 684 | return VXGE_HW_OK; |
| 685 | } |
| 686 | |
Eric Dumazet | 2867975 | 2009-05-27 19:26:37 +0000 | [diff] [blame] | 687 | /* select a vpath to transmit the packet */ |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 688 | static u32 vxge_get_vpath_no(struct vxgedev *vdev, struct sk_buff *skb, |
| 689 | int *do_lock) |
| 690 | { |
| 691 | u16 queue_len, counter = 0; |
| 692 | if (skb->protocol == htons(ETH_P_IP)) { |
| 693 | struct iphdr *ip; |
| 694 | struct tcphdr *th; |
| 695 | |
| 696 | ip = ip_hdr(skb); |
| 697 | |
| 698 | if ((ip->frag_off & htons(IP_OFFSET|IP_MF)) == 0) { |
| 699 | th = (struct tcphdr *)(((unsigned char *)ip) + |
| 700 | ip->ihl*4); |
| 701 | |
| 702 | queue_len = vdev->no_of_vpath; |
| 703 | counter = (ntohs(th->source) + |
| 704 | ntohs(th->dest)) & |
| 705 | vdev->vpath_selector[queue_len - 1]; |
| 706 | if (counter >= queue_len) |
| 707 | counter = queue_len - 1; |
| 708 | |
| 709 | if (ip->protocol == IPPROTO_UDP) { |
| 710 | #ifdef NETIF_F_LLTX |
| 711 | *do_lock = 0; |
| 712 | #endif |
| 713 | } |
| 714 | } |
| 715 | } |
| 716 | return counter; |
| 717 | } |
| 718 | |
| 719 | static enum vxge_hw_status vxge_search_mac_addr_in_list( |
| 720 | struct vxge_vpath *vpath, u64 del_mac) |
| 721 | { |
| 722 | struct list_head *entry, *next; |
| 723 | list_for_each_safe(entry, next, &vpath->mac_addr_list) { |
| 724 | if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac) |
| 725 | return TRUE; |
| 726 | } |
| 727 | return FALSE; |
| 728 | } |
| 729 | |
| 730 | static int vxge_learn_mac(struct vxgedev *vdev, u8 *mac_header) |
| 731 | { |
| 732 | struct macInfo mac_info; |
| 733 | u8 *mac_address = NULL; |
| 734 | u64 mac_addr = 0, vpath_vector = 0; |
| 735 | int vpath_idx = 0; |
| 736 | enum vxge_hw_status status = VXGE_HW_OK; |
| 737 | struct vxge_vpath *vpath = NULL; |
| 738 | struct __vxge_hw_device *hldev; |
| 739 | |
| 740 | hldev = (struct __vxge_hw_device *) pci_get_drvdata(vdev->pdev); |
| 741 | |
| 742 | mac_address = (u8 *)&mac_addr; |
| 743 | memcpy(mac_address, mac_header, ETH_ALEN); |
| 744 | |
| 745 | /* Is this mac address already in the list? */ |
| 746 | for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) { |
| 747 | vpath = &vdev->vpaths[vpath_idx]; |
| 748 | if (vxge_search_mac_addr_in_list(vpath, mac_addr)) |
| 749 | return vpath_idx; |
| 750 | } |
| 751 | |
| 752 | memset(&mac_info, 0, sizeof(struct macInfo)); |
| 753 | memcpy(mac_info.macaddr, mac_header, ETH_ALEN); |
| 754 | |
| 755 | /* Any vpath has room to add mac address to its da table? */ |
| 756 | for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) { |
| 757 | vpath = &vdev->vpaths[vpath_idx]; |
| 758 | if (vpath->mac_addr_cnt < vpath->max_mac_addr_cnt) { |
| 759 | /* Add this mac address to this vpath */ |
| 760 | mac_info.vpath_no = vpath_idx; |
| 761 | mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE; |
| 762 | status = vxge_add_mac_addr(vdev, &mac_info); |
| 763 | if (status != VXGE_HW_OK) |
| 764 | return -EPERM; |
| 765 | return vpath_idx; |
| 766 | } |
| 767 | } |
| 768 | |
| 769 | mac_info.state = VXGE_LL_MAC_ADDR_IN_LIST; |
| 770 | vpath_idx = 0; |
| 771 | mac_info.vpath_no = vpath_idx; |
| 772 | /* Is the first vpath already selected as catch-basin ? */ |
| 773 | vpath = &vdev->vpaths[vpath_idx]; |
| 774 | if (vpath->mac_addr_cnt > vpath->max_mac_addr_cnt) { |
| 775 | /* Add this mac address to this vpath */ |
| 776 | if (FALSE == vxge_mac_list_add(vpath, &mac_info)) |
| 777 | return -EPERM; |
| 778 | return vpath_idx; |
| 779 | } |
| 780 | |
| 781 | /* Select first vpath as catch-basin */ |
| 782 | vpath_vector = vxge_mBIT(vpath->device_id); |
| 783 | status = vxge_hw_mgmt_reg_write(vpath->vdev->devh, |
| 784 | vxge_hw_mgmt_reg_type_mrpcim, |
| 785 | 0, |
| 786 | (ulong)offsetof( |
| 787 | struct vxge_hw_mrpcim_reg, |
| 788 | rts_mgr_cbasin_cfg), |
| 789 | vpath_vector); |
| 790 | if (status != VXGE_HW_OK) { |
| 791 | vxge_debug_tx(VXGE_ERR, |
| 792 | "%s: Unable to set the vpath-%d in catch-basin mode", |
| 793 | VXGE_DRIVER_NAME, vpath->device_id); |
| 794 | return -EPERM; |
| 795 | } |
| 796 | |
| 797 | if (FALSE == vxge_mac_list_add(vpath, &mac_info)) |
| 798 | return -EPERM; |
| 799 | |
| 800 | return vpath_idx; |
| 801 | } |
| 802 | |
| 803 | /** |
| 804 | * vxge_xmit |
| 805 | * @skb : the socket buffer containing the Tx data. |
| 806 | * @dev : device pointer. |
| 807 | * |
| 808 | * This function is the Tx entry point of the driver. Neterion NIC supports |
| 809 | * certain protocol assist features on Tx side, namely CSO, S/G, LSO. |
| 810 | * NOTE: when device cant queue the pkt, just the trans_start variable will |
| 811 | * not be upadted. |
| 812 | */ |
Stephen Hemminger | 61357325 | 2009-08-31 19:50:58 +0000 | [diff] [blame] | 813 | static netdev_tx_t |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 814 | vxge_xmit(struct sk_buff *skb, struct net_device *dev) |
| 815 | { |
| 816 | struct vxge_fifo *fifo = NULL; |
| 817 | void *dtr_priv; |
| 818 | void *dtr = NULL; |
| 819 | struct vxgedev *vdev = NULL; |
| 820 | enum vxge_hw_status status; |
| 821 | int frg_cnt, first_frg_len; |
| 822 | skb_frag_t *frag; |
| 823 | int i = 0, j = 0, avail; |
| 824 | u64 dma_pointer; |
| 825 | struct vxge_tx_priv *txdl_priv = NULL; |
| 826 | struct __vxge_hw_fifo *fifo_hw; |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 827 | int offload_type; |
| 828 | unsigned long flags = 0; |
| 829 | int vpath_no = 0; |
| 830 | int do_spin_tx_lock = 1; |
| 831 | |
| 832 | vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d", |
| 833 | dev->name, __func__, __LINE__); |
| 834 | |
| 835 | /* A buffer with no data will be dropped */ |
| 836 | if (unlikely(skb->len <= 0)) { |
| 837 | vxge_debug_tx(VXGE_ERR, |
| 838 | "%s: Buffer has no data..", dev->name); |
| 839 | dev_kfree_skb(skb); |
| 840 | return NETDEV_TX_OK; |
| 841 | } |
| 842 | |
| 843 | vdev = (struct vxgedev *)netdev_priv(dev); |
| 844 | |
| 845 | if (unlikely(!is_vxge_card_up(vdev))) { |
| 846 | vxge_debug_tx(VXGE_ERR, |
| 847 | "%s: vdev not initialized", dev->name); |
| 848 | dev_kfree_skb(skb); |
| 849 | return NETDEV_TX_OK; |
| 850 | } |
| 851 | |
| 852 | if (vdev->config.addr_learn_en) { |
| 853 | vpath_no = vxge_learn_mac(vdev, skb->data + ETH_ALEN); |
| 854 | if (vpath_no == -EPERM) { |
| 855 | vxge_debug_tx(VXGE_ERR, |
| 856 | "%s: Failed to store the mac address", |
| 857 | dev->name); |
| 858 | dev_kfree_skb(skb); |
| 859 | return NETDEV_TX_OK; |
| 860 | } |
| 861 | } |
| 862 | |
| 863 | if (vdev->config.tx_steering_type == TX_MULTIQ_STEERING) |
| 864 | vpath_no = skb_get_queue_mapping(skb); |
| 865 | else if (vdev->config.tx_steering_type == TX_PORT_STEERING) |
| 866 | vpath_no = vxge_get_vpath_no(vdev, skb, &do_spin_tx_lock); |
| 867 | |
| 868 | vxge_debug_tx(VXGE_TRACE, "%s: vpath_no= %d", dev->name, vpath_no); |
| 869 | |
| 870 | if (vpath_no >= vdev->no_of_vpath) |
| 871 | vpath_no = 0; |
| 872 | |
| 873 | fifo = &vdev->vpaths[vpath_no].fifo; |
| 874 | fifo_hw = fifo->handle; |
| 875 | |
| 876 | if (do_spin_tx_lock) |
| 877 | spin_lock_irqsave(&fifo->tx_lock, flags); |
| 878 | else { |
| 879 | if (unlikely(!spin_trylock_irqsave(&fifo->tx_lock, flags))) |
| 880 | return NETDEV_TX_LOCKED; |
| 881 | } |
| 882 | |
| 883 | if (vdev->config.tx_steering_type == TX_MULTIQ_STEERING) { |
| 884 | if (netif_subqueue_stopped(dev, skb)) { |
| 885 | spin_unlock_irqrestore(&fifo->tx_lock, flags); |
| 886 | return NETDEV_TX_BUSY; |
| 887 | } |
| 888 | } else if (unlikely(fifo->queue_state == VPATH_QUEUE_STOP)) { |
| 889 | if (netif_queue_stopped(dev)) { |
| 890 | spin_unlock_irqrestore(&fifo->tx_lock, flags); |
| 891 | return NETDEV_TX_BUSY; |
| 892 | } |
| 893 | } |
| 894 | avail = vxge_hw_fifo_free_txdl_count_get(fifo_hw); |
| 895 | if (avail == 0) { |
| 896 | vxge_debug_tx(VXGE_ERR, |
| 897 | "%s: No free TXDs available", dev->name); |
| 898 | fifo->stats.txd_not_free++; |
| 899 | vxge_stop_tx_queue(fifo); |
| 900 | goto _exit2; |
| 901 | } |
| 902 | |
Benjamin LaHaise | 4403b37 | 2009-08-04 10:20:44 +0000 | [diff] [blame] | 903 | /* Last TXD? Stop tx queue to avoid dropping packets. TX |
| 904 | * completion will resume the queue. |
| 905 | */ |
| 906 | if (avail == 1) |
| 907 | vxge_stop_tx_queue(fifo); |
| 908 | |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 909 | status = vxge_hw_fifo_txdl_reserve(fifo_hw, &dtr, &dtr_priv); |
| 910 | if (unlikely(status != VXGE_HW_OK)) { |
| 911 | vxge_debug_tx(VXGE_ERR, |
| 912 | "%s: Out of descriptors .", dev->name); |
| 913 | fifo->stats.txd_out_of_desc++; |
| 914 | vxge_stop_tx_queue(fifo); |
| 915 | goto _exit2; |
| 916 | } |
| 917 | |
| 918 | vxge_debug_tx(VXGE_TRACE, |
| 919 | "%s: %s:%d fifo_hw = %p dtr = %p dtr_priv = %p", |
| 920 | dev->name, __func__, __LINE__, |
| 921 | fifo_hw, dtr, dtr_priv); |
| 922 | |
| 923 | if (vdev->vlgrp && vlan_tx_tag_present(skb)) { |
| 924 | u16 vlan_tag = vlan_tx_tag_get(skb); |
| 925 | vxge_hw_fifo_txdl_vlan_set(dtr, vlan_tag); |
| 926 | } |
| 927 | |
| 928 | first_frg_len = skb_headlen(skb); |
| 929 | |
| 930 | dma_pointer = pci_map_single(fifo->pdev, skb->data, first_frg_len, |
| 931 | PCI_DMA_TODEVICE); |
| 932 | |
| 933 | if (unlikely(pci_dma_mapping_error(fifo->pdev, dma_pointer))) { |
| 934 | vxge_hw_fifo_txdl_free(fifo_hw, dtr); |
| 935 | vxge_stop_tx_queue(fifo); |
| 936 | fifo->stats.pci_map_fail++; |
| 937 | goto _exit2; |
| 938 | } |
| 939 | |
| 940 | txdl_priv = vxge_hw_fifo_txdl_private_get(dtr); |
| 941 | txdl_priv->skb = skb; |
| 942 | txdl_priv->dma_buffers[j] = dma_pointer; |
| 943 | |
| 944 | frg_cnt = skb_shinfo(skb)->nr_frags; |
| 945 | vxge_debug_tx(VXGE_TRACE, |
| 946 | "%s: %s:%d skb = %p txdl_priv = %p " |
| 947 | "frag_cnt = %d dma_pointer = 0x%llx", dev->name, |
| 948 | __func__, __LINE__, skb, txdl_priv, |
| 949 | frg_cnt, (unsigned long long)dma_pointer); |
| 950 | |
| 951 | vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer, |
| 952 | first_frg_len); |
| 953 | |
| 954 | frag = &skb_shinfo(skb)->frags[0]; |
| 955 | for (i = 0; i < frg_cnt; i++) { |
| 956 | /* ignore 0 length fragment */ |
| 957 | if (!frag->size) |
| 958 | continue; |
| 959 | |
| 960 | dma_pointer = |
| 961 | (u64)pci_map_page(fifo->pdev, frag->page, |
| 962 | frag->page_offset, frag->size, |
| 963 | PCI_DMA_TODEVICE); |
| 964 | |
| 965 | if (unlikely(pci_dma_mapping_error(fifo->pdev, dma_pointer))) |
| 966 | goto _exit0; |
| 967 | vxge_debug_tx(VXGE_TRACE, |
| 968 | "%s: %s:%d frag = %d dma_pointer = 0x%llx", |
| 969 | dev->name, __func__, __LINE__, i, |
| 970 | (unsigned long long)dma_pointer); |
| 971 | |
| 972 | txdl_priv->dma_buffers[j] = dma_pointer; |
| 973 | vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer, |
| 974 | frag->size); |
| 975 | frag += 1; |
| 976 | } |
| 977 | |
| 978 | offload_type = vxge_offload_type(skb); |
| 979 | |
| 980 | if (offload_type & (SKB_GSO_TCPV4 | SKB_GSO_TCPV6)) { |
| 981 | |
| 982 | int mss = vxge_tcp_mss(skb); |
| 983 | if (mss) { |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 984 | vxge_debug_tx(VXGE_TRACE, |
| 985 | "%s: %s:%d mss = %d", |
| 986 | dev->name, __func__, __LINE__, mss); |
| 987 | vxge_hw_fifo_txdl_mss_set(dtr, mss); |
| 988 | } else { |
| 989 | vxge_assert(skb->len <= |
| 990 | dev->mtu + VXGE_HW_MAC_HEADER_MAX_SIZE); |
| 991 | vxge_assert(0); |
| 992 | goto _exit1; |
| 993 | } |
| 994 | } |
| 995 | |
| 996 | if (skb->ip_summed == CHECKSUM_PARTIAL) |
| 997 | vxge_hw_fifo_txdl_cksum_set_bits(dtr, |
| 998 | VXGE_HW_FIFO_TXD_TX_CKO_IPV4_EN | |
| 999 | VXGE_HW_FIFO_TXD_TX_CKO_TCP_EN | |
| 1000 | VXGE_HW_FIFO_TXD_TX_CKO_UDP_EN); |
| 1001 | |
| 1002 | vxge_hw_fifo_txdl_post(fifo_hw, dtr); |
Eric Dumazet | 2867975 | 2009-05-27 19:26:37 +0000 | [diff] [blame] | 1003 | #ifdef NETIF_F_LLTX |
| 1004 | dev->trans_start = jiffies; /* NETIF_F_LLTX driver :( */ |
| 1005 | #endif |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 1006 | spin_unlock_irqrestore(&fifo->tx_lock, flags); |
| 1007 | |
| 1008 | VXGE_COMPLETE_VPATH_TX(fifo); |
| 1009 | vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d Exiting...", |
| 1010 | dev->name, __func__, __LINE__); |
Patrick McHardy | 6ed1065 | 2009-06-23 06:03:08 +0000 | [diff] [blame] | 1011 | return NETDEV_TX_OK; |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 1012 | |
| 1013 | _exit0: |
| 1014 | vxge_debug_tx(VXGE_TRACE, "%s: pci_map_page failed", dev->name); |
| 1015 | |
| 1016 | _exit1: |
| 1017 | j = 0; |
| 1018 | frag = &skb_shinfo(skb)->frags[0]; |
| 1019 | |
| 1020 | pci_unmap_single(fifo->pdev, txdl_priv->dma_buffers[j++], |
| 1021 | skb_headlen(skb), PCI_DMA_TODEVICE); |
| 1022 | |
| 1023 | for (; j < i; j++) { |
| 1024 | pci_unmap_page(fifo->pdev, txdl_priv->dma_buffers[j], |
| 1025 | frag->size, PCI_DMA_TODEVICE); |
| 1026 | frag += 1; |
| 1027 | } |
| 1028 | |
| 1029 | vxge_hw_fifo_txdl_free(fifo_hw, dtr); |
| 1030 | _exit2: |
| 1031 | dev_kfree_skb(skb); |
| 1032 | spin_unlock_irqrestore(&fifo->tx_lock, flags); |
| 1033 | VXGE_COMPLETE_VPATH_TX(fifo); |
| 1034 | |
Patrick McHardy | 6ed1065 | 2009-06-23 06:03:08 +0000 | [diff] [blame] | 1035 | return NETDEV_TX_OK; |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 1036 | } |
| 1037 | |
| 1038 | /* |
| 1039 | * vxge_rx_term |
| 1040 | * |
| 1041 | * Function will be called by hw function to abort all outstanding receive |
| 1042 | * descriptors. |
| 1043 | */ |
| 1044 | static void |
| 1045 | vxge_rx_term(void *dtrh, enum vxge_hw_rxd_state state, void *userdata) |
| 1046 | { |
| 1047 | struct vxge_ring *ring = (struct vxge_ring *)userdata; |
| 1048 | struct vxge_rx_priv *rx_priv = |
| 1049 | vxge_hw_ring_rxd_private_get(dtrh); |
| 1050 | |
| 1051 | vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d", |
| 1052 | ring->ndev->name, __func__, __LINE__); |
| 1053 | if (state != VXGE_HW_RXD_STATE_POSTED) |
| 1054 | return; |
| 1055 | |
| 1056 | pci_unmap_single(ring->pdev, rx_priv->data_dma, |
| 1057 | rx_priv->data_size, PCI_DMA_FROMDEVICE); |
| 1058 | |
| 1059 | dev_kfree_skb(rx_priv->skb); |
Benjamin LaHaise | ea11bbe | 2009-08-04 10:21:57 +0000 | [diff] [blame] | 1060 | rx_priv->skb_data = NULL; |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 1061 | |
| 1062 | vxge_debug_entryexit(VXGE_TRACE, |
| 1063 | "%s: %s:%d Exiting...", |
| 1064 | ring->ndev->name, __func__, __LINE__); |
| 1065 | } |
| 1066 | |
| 1067 | /* |
| 1068 | * vxge_tx_term |
| 1069 | * |
| 1070 | * Function will be called to abort all outstanding tx descriptors |
| 1071 | */ |
| 1072 | static void |
| 1073 | vxge_tx_term(void *dtrh, enum vxge_hw_txdl_state state, void *userdata) |
| 1074 | { |
| 1075 | struct vxge_fifo *fifo = (struct vxge_fifo *)userdata; |
| 1076 | skb_frag_t *frag; |
| 1077 | int i = 0, j, frg_cnt; |
| 1078 | struct vxge_tx_priv *txd_priv = vxge_hw_fifo_txdl_private_get(dtrh); |
| 1079 | struct sk_buff *skb = txd_priv->skb; |
| 1080 | |
| 1081 | vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__); |
| 1082 | |
| 1083 | if (state != VXGE_HW_TXDL_STATE_POSTED) |
| 1084 | return; |
| 1085 | |
| 1086 | /* check skb validity */ |
| 1087 | vxge_assert(skb); |
| 1088 | frg_cnt = skb_shinfo(skb)->nr_frags; |
| 1089 | frag = &skb_shinfo(skb)->frags[0]; |
| 1090 | |
| 1091 | /* for unfragmented skb */ |
| 1092 | pci_unmap_single(fifo->pdev, txd_priv->dma_buffers[i++], |
| 1093 | skb_headlen(skb), PCI_DMA_TODEVICE); |
| 1094 | |
| 1095 | for (j = 0; j < frg_cnt; j++) { |
| 1096 | pci_unmap_page(fifo->pdev, txd_priv->dma_buffers[i++], |
| 1097 | frag->size, PCI_DMA_TODEVICE); |
| 1098 | frag += 1; |
| 1099 | } |
| 1100 | |
| 1101 | dev_kfree_skb(skb); |
| 1102 | |
| 1103 | vxge_debug_entryexit(VXGE_TRACE, |
| 1104 | "%s:%d Exiting...", __func__, __LINE__); |
| 1105 | } |
| 1106 | |
| 1107 | /** |
| 1108 | * vxge_set_multicast |
| 1109 | * @dev: pointer to the device structure |
| 1110 | * |
| 1111 | * Entry point for multicast address enable/disable |
| 1112 | * This function is a driver entry point which gets called by the kernel |
| 1113 | * whenever multicast addresses must be enabled/disabled. This also gets |
| 1114 | * called to set/reset promiscuous mode. Depending on the deivce flag, we |
| 1115 | * determine, if multicast address must be enabled or if promiscuous mode |
| 1116 | * is to be disabled etc. |
| 1117 | */ |
| 1118 | static void vxge_set_multicast(struct net_device *dev) |
| 1119 | { |
Jiri Pirko | 22bedad | 2010-04-01 21:22:57 +0000 | [diff] [blame^] | 1120 | struct netdev_hw_addr *ha; |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 1121 | struct vxgedev *vdev; |
| 1122 | int i, mcast_cnt = 0; |
| 1123 | struct __vxge_hw_device *hldev; |
| 1124 | enum vxge_hw_status status = VXGE_HW_OK; |
| 1125 | struct macInfo mac_info; |
| 1126 | int vpath_idx = 0; |
| 1127 | struct vxge_mac_addrs *mac_entry; |
| 1128 | struct list_head *list_head; |
| 1129 | struct list_head *entry, *next; |
| 1130 | u8 *mac_address = NULL; |
| 1131 | |
| 1132 | vxge_debug_entryexit(VXGE_TRACE, |
| 1133 | "%s:%d", __func__, __LINE__); |
| 1134 | |
| 1135 | vdev = (struct vxgedev *)netdev_priv(dev); |
| 1136 | hldev = (struct __vxge_hw_device *)vdev->devh; |
| 1137 | |
| 1138 | if (unlikely(!is_vxge_card_up(vdev))) |
| 1139 | return; |
| 1140 | |
| 1141 | if ((dev->flags & IFF_ALLMULTI) && (!vdev->all_multi_flg)) { |
| 1142 | for (i = 0; i < vdev->no_of_vpath; i++) { |
| 1143 | vxge_assert(vdev->vpaths[i].is_open); |
| 1144 | status = vxge_hw_vpath_mcast_enable( |
| 1145 | vdev->vpaths[i].handle); |
| 1146 | vdev->all_multi_flg = 1; |
| 1147 | } |
| 1148 | } else if ((dev->flags & IFF_ALLMULTI) && (vdev->all_multi_flg)) { |
| 1149 | for (i = 0; i < vdev->no_of_vpath; i++) { |
| 1150 | vxge_assert(vdev->vpaths[i].is_open); |
| 1151 | status = vxge_hw_vpath_mcast_disable( |
| 1152 | vdev->vpaths[i].handle); |
| 1153 | vdev->all_multi_flg = 1; |
| 1154 | } |
| 1155 | } |
| 1156 | |
| 1157 | if (status != VXGE_HW_OK) |
| 1158 | vxge_debug_init(VXGE_ERR, |
| 1159 | "failed to %s multicast, status %d", |
| 1160 | dev->flags & IFF_ALLMULTI ? |
| 1161 | "enable" : "disable", status); |
| 1162 | |
| 1163 | if (!vdev->config.addr_learn_en) { |
| 1164 | if (dev->flags & IFF_PROMISC) { |
| 1165 | for (i = 0; i < vdev->no_of_vpath; i++) { |
| 1166 | vxge_assert(vdev->vpaths[i].is_open); |
| 1167 | status = vxge_hw_vpath_promisc_enable( |
| 1168 | vdev->vpaths[i].handle); |
| 1169 | } |
| 1170 | } else { |
| 1171 | for (i = 0; i < vdev->no_of_vpath; i++) { |
| 1172 | vxge_assert(vdev->vpaths[i].is_open); |
| 1173 | status = vxge_hw_vpath_promisc_disable( |
| 1174 | vdev->vpaths[i].handle); |
| 1175 | } |
| 1176 | } |
| 1177 | } |
| 1178 | |
| 1179 | memset(&mac_info, 0, sizeof(struct macInfo)); |
| 1180 | /* Update individual M_CAST address list */ |
Jiri Pirko | 4cd24ea | 2010-02-08 04:30:35 +0000 | [diff] [blame] | 1181 | if ((!vdev->all_multi_flg) && netdev_mc_count(dev)) { |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 1182 | |
| 1183 | mcast_cnt = vdev->vpaths[0].mcast_addr_cnt; |
| 1184 | list_head = &vdev->vpaths[0].mac_addr_list; |
Jiri Pirko | 4cd24ea | 2010-02-08 04:30:35 +0000 | [diff] [blame] | 1185 | if ((netdev_mc_count(dev) + |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 1186 | (vdev->vpaths[0].mac_addr_cnt - mcast_cnt)) > |
| 1187 | vdev->vpaths[0].max_mac_addr_cnt) |
| 1188 | goto _set_all_mcast; |
| 1189 | |
| 1190 | /* Delete previous MC's */ |
| 1191 | for (i = 0; i < mcast_cnt; i++) { |
| 1192 | if (!list_empty(list_head)) |
| 1193 | mac_entry = (struct vxge_mac_addrs *) |
| 1194 | list_first_entry(list_head, |
| 1195 | struct vxge_mac_addrs, |
| 1196 | item); |
| 1197 | |
| 1198 | list_for_each_safe(entry, next, list_head) { |
| 1199 | |
| 1200 | mac_entry = (struct vxge_mac_addrs *) entry; |
| 1201 | /* Copy the mac address to delete */ |
| 1202 | mac_address = (u8 *)&mac_entry->macaddr; |
| 1203 | memcpy(mac_info.macaddr, mac_address, ETH_ALEN); |
| 1204 | |
| 1205 | /* Is this a multicast address */ |
| 1206 | if (0x01 & mac_info.macaddr[0]) { |
| 1207 | for (vpath_idx = 0; vpath_idx < |
| 1208 | vdev->no_of_vpath; |
| 1209 | vpath_idx++) { |
| 1210 | mac_info.vpath_no = vpath_idx; |
| 1211 | status = vxge_del_mac_addr( |
| 1212 | vdev, |
| 1213 | &mac_info); |
| 1214 | } |
| 1215 | } |
| 1216 | } |
| 1217 | } |
| 1218 | |
| 1219 | /* Add new ones */ |
Jiri Pirko | 22bedad | 2010-04-01 21:22:57 +0000 | [diff] [blame^] | 1220 | netdev_for_each_mc_addr(ha, dev) { |
| 1221 | memcpy(mac_info.macaddr, ha->addr, ETH_ALEN); |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 1222 | for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; |
| 1223 | vpath_idx++) { |
| 1224 | mac_info.vpath_no = vpath_idx; |
| 1225 | mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE; |
| 1226 | status = vxge_add_mac_addr(vdev, &mac_info); |
| 1227 | if (status != VXGE_HW_OK) { |
| 1228 | vxge_debug_init(VXGE_ERR, |
| 1229 | "%s:%d Setting individual" |
| 1230 | "multicast address failed", |
| 1231 | __func__, __LINE__); |
| 1232 | goto _set_all_mcast; |
| 1233 | } |
| 1234 | } |
| 1235 | } |
| 1236 | |
| 1237 | return; |
| 1238 | _set_all_mcast: |
| 1239 | mcast_cnt = vdev->vpaths[0].mcast_addr_cnt; |
| 1240 | /* Delete previous MC's */ |
| 1241 | for (i = 0; i < mcast_cnt; i++) { |
| 1242 | |
| 1243 | list_for_each_safe(entry, next, list_head) { |
| 1244 | |
| 1245 | mac_entry = (struct vxge_mac_addrs *) entry; |
| 1246 | /* Copy the mac address to delete */ |
| 1247 | mac_address = (u8 *)&mac_entry->macaddr; |
| 1248 | memcpy(mac_info.macaddr, mac_address, ETH_ALEN); |
| 1249 | |
| 1250 | /* Is this a multicast address */ |
| 1251 | if (0x01 & mac_info.macaddr[0]) |
| 1252 | break; |
| 1253 | } |
| 1254 | |
| 1255 | for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; |
| 1256 | vpath_idx++) { |
| 1257 | mac_info.vpath_no = vpath_idx; |
| 1258 | status = vxge_del_mac_addr(vdev, &mac_info); |
| 1259 | } |
| 1260 | } |
| 1261 | |
| 1262 | /* Enable all multicast */ |
| 1263 | for (i = 0; i < vdev->no_of_vpath; i++) { |
| 1264 | vxge_assert(vdev->vpaths[i].is_open); |
| 1265 | status = vxge_hw_vpath_mcast_enable( |
| 1266 | vdev->vpaths[i].handle); |
| 1267 | if (status != VXGE_HW_OK) { |
| 1268 | vxge_debug_init(VXGE_ERR, |
| 1269 | "%s:%d Enabling all multicasts failed", |
| 1270 | __func__, __LINE__); |
| 1271 | } |
| 1272 | vdev->all_multi_flg = 1; |
| 1273 | } |
| 1274 | dev->flags |= IFF_ALLMULTI; |
| 1275 | } |
| 1276 | |
| 1277 | vxge_debug_entryexit(VXGE_TRACE, |
| 1278 | "%s:%d Exiting...", __func__, __LINE__); |
| 1279 | } |
| 1280 | |
| 1281 | /** |
| 1282 | * vxge_set_mac_addr |
| 1283 | * @dev: pointer to the device structure |
| 1284 | * |
| 1285 | * Update entry "0" (default MAC addr) |
| 1286 | */ |
| 1287 | static int vxge_set_mac_addr(struct net_device *dev, void *p) |
| 1288 | { |
| 1289 | struct sockaddr *addr = p; |
| 1290 | struct vxgedev *vdev; |
| 1291 | struct __vxge_hw_device *hldev; |
| 1292 | enum vxge_hw_status status = VXGE_HW_OK; |
| 1293 | struct macInfo mac_info_new, mac_info_old; |
| 1294 | int vpath_idx = 0; |
| 1295 | |
| 1296 | vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__); |
| 1297 | |
| 1298 | vdev = (struct vxgedev *)netdev_priv(dev); |
| 1299 | hldev = vdev->devh; |
| 1300 | |
| 1301 | if (!is_valid_ether_addr(addr->sa_data)) |
| 1302 | return -EINVAL; |
| 1303 | |
| 1304 | memset(&mac_info_new, 0, sizeof(struct macInfo)); |
| 1305 | memset(&mac_info_old, 0, sizeof(struct macInfo)); |
| 1306 | |
| 1307 | vxge_debug_entryexit(VXGE_TRACE, "%s:%d Exiting...", |
| 1308 | __func__, __LINE__); |
| 1309 | |
| 1310 | /* Get the old address */ |
| 1311 | memcpy(mac_info_old.macaddr, dev->dev_addr, dev->addr_len); |
| 1312 | |
| 1313 | /* Copy the new address */ |
| 1314 | memcpy(mac_info_new.macaddr, addr->sa_data, dev->addr_len); |
| 1315 | |
| 1316 | /* First delete the old mac address from all the vpaths |
| 1317 | as we can't specify the index while adding new mac address */ |
| 1318 | for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) { |
| 1319 | struct vxge_vpath *vpath = &vdev->vpaths[vpath_idx]; |
| 1320 | if (!vpath->is_open) { |
| 1321 | /* This can happen when this interface is added/removed |
| 1322 | to the bonding interface. Delete this station address |
| 1323 | from the linked list */ |
| 1324 | vxge_mac_list_del(vpath, &mac_info_old); |
| 1325 | |
| 1326 | /* Add this new address to the linked list |
| 1327 | for later restoring */ |
| 1328 | vxge_mac_list_add(vpath, &mac_info_new); |
| 1329 | |
| 1330 | continue; |
| 1331 | } |
| 1332 | /* Delete the station address */ |
| 1333 | mac_info_old.vpath_no = vpath_idx; |
| 1334 | status = vxge_del_mac_addr(vdev, &mac_info_old); |
| 1335 | } |
| 1336 | |
| 1337 | if (unlikely(!is_vxge_card_up(vdev))) { |
| 1338 | memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); |
| 1339 | return VXGE_HW_OK; |
| 1340 | } |
| 1341 | |
| 1342 | /* Set this mac address to all the vpaths */ |
| 1343 | for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) { |
| 1344 | mac_info_new.vpath_no = vpath_idx; |
| 1345 | mac_info_new.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE; |
| 1346 | status = vxge_add_mac_addr(vdev, &mac_info_new); |
| 1347 | if (status != VXGE_HW_OK) |
| 1348 | return -EINVAL; |
| 1349 | } |
| 1350 | |
| 1351 | memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); |
| 1352 | |
| 1353 | return status; |
| 1354 | } |
| 1355 | |
| 1356 | /* |
| 1357 | * vxge_vpath_intr_enable |
| 1358 | * @vdev: pointer to vdev |
| 1359 | * @vp_id: vpath for which to enable the interrupts |
| 1360 | * |
| 1361 | * Enables the interrupts for the vpath |
| 1362 | */ |
| 1363 | void vxge_vpath_intr_enable(struct vxgedev *vdev, int vp_id) |
| 1364 | { |
| 1365 | struct vxge_vpath *vpath = &vdev->vpaths[vp_id]; |
Sreenivasa Honnur | b59c945 | 2010-03-28 22:11:41 +0000 | [diff] [blame] | 1366 | int msix_id = 0; |
| 1367 | int tim_msix_id[4] = {0, 1, 0, 0}; |
| 1368 | int alarm_msix_id = VXGE_ALARM_MSIX_ID; |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 1369 | |
| 1370 | vxge_hw_vpath_intr_enable(vpath->handle); |
| 1371 | |
| 1372 | if (vdev->config.intr_type == INTA) |
| 1373 | vxge_hw_vpath_inta_unmask_tx_rx(vpath->handle); |
| 1374 | else { |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 1375 | vxge_hw_vpath_msix_set(vpath->handle, tim_msix_id, |
| 1376 | alarm_msix_id); |
| 1377 | |
Sreenivasa Honnur | b59c945 | 2010-03-28 22:11:41 +0000 | [diff] [blame] | 1378 | msix_id = vpath->device_id * VXGE_HW_VPATH_MSIX_ACTIVE; |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 1379 | vxge_hw_vpath_msix_unmask(vpath->handle, msix_id); |
| 1380 | vxge_hw_vpath_msix_unmask(vpath->handle, msix_id + 1); |
| 1381 | |
| 1382 | /* enable the alarm vector */ |
Sreenivasa Honnur | b59c945 | 2010-03-28 22:11:41 +0000 | [diff] [blame] | 1383 | msix_id = (vpath->handle->vpath->hldev->first_vp_id * |
| 1384 | VXGE_HW_VPATH_MSIX_ACTIVE) + alarm_msix_id; |
| 1385 | vxge_hw_vpath_msix_unmask(vpath->handle, msix_id); |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 1386 | } |
| 1387 | } |
| 1388 | |
| 1389 | /* |
| 1390 | * vxge_vpath_intr_disable |
| 1391 | * @vdev: pointer to vdev |
| 1392 | * @vp_id: vpath for which to disable the interrupts |
| 1393 | * |
| 1394 | * Disables the interrupts for the vpath |
| 1395 | */ |
| 1396 | void vxge_vpath_intr_disable(struct vxgedev *vdev, int vp_id) |
| 1397 | { |
| 1398 | struct vxge_vpath *vpath = &vdev->vpaths[vp_id]; |
| 1399 | int msix_id; |
| 1400 | |
| 1401 | vxge_hw_vpath_intr_disable(vpath->handle); |
| 1402 | |
| 1403 | if (vdev->config.intr_type == INTA) |
| 1404 | vxge_hw_vpath_inta_mask_tx_rx(vpath->handle); |
| 1405 | else { |
Sreenivasa Honnur | b59c945 | 2010-03-28 22:11:41 +0000 | [diff] [blame] | 1406 | msix_id = vpath->device_id * VXGE_HW_VPATH_MSIX_ACTIVE; |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 1407 | vxge_hw_vpath_msix_mask(vpath->handle, msix_id); |
| 1408 | vxge_hw_vpath_msix_mask(vpath->handle, msix_id + 1); |
| 1409 | |
| 1410 | /* disable the alarm vector */ |
Sreenivasa Honnur | b59c945 | 2010-03-28 22:11:41 +0000 | [diff] [blame] | 1411 | msix_id = (vpath->handle->vpath->hldev->first_vp_id * |
| 1412 | VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID; |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 1413 | vxge_hw_vpath_msix_mask(vpath->handle, msix_id); |
| 1414 | } |
| 1415 | } |
| 1416 | |
| 1417 | /* |
| 1418 | * vxge_reset_vpath |
| 1419 | * @vdev: pointer to vdev |
| 1420 | * @vp_id: vpath to reset |
| 1421 | * |
| 1422 | * Resets the vpath |
| 1423 | */ |
| 1424 | static int vxge_reset_vpath(struct vxgedev *vdev, int vp_id) |
| 1425 | { |
| 1426 | enum vxge_hw_status status = VXGE_HW_OK; |
| 1427 | int ret = 0; |
| 1428 | |
| 1429 | /* check if device is down already */ |
| 1430 | if (unlikely(!is_vxge_card_up(vdev))) |
| 1431 | return 0; |
| 1432 | |
| 1433 | /* is device reset already scheduled */ |
| 1434 | if (test_bit(__VXGE_STATE_RESET_CARD, &vdev->state)) |
| 1435 | return 0; |
| 1436 | |
| 1437 | if (vdev->vpaths[vp_id].handle) { |
| 1438 | if (vxge_hw_vpath_reset(vdev->vpaths[vp_id].handle) |
| 1439 | == VXGE_HW_OK) { |
| 1440 | if (is_vxge_card_up(vdev) && |
| 1441 | vxge_hw_vpath_recover_from_reset( |
| 1442 | vdev->vpaths[vp_id].handle) |
| 1443 | != VXGE_HW_OK) { |
| 1444 | vxge_debug_init(VXGE_ERR, |
| 1445 | "vxge_hw_vpath_recover_from_reset" |
| 1446 | "failed for vpath:%d", vp_id); |
| 1447 | return status; |
| 1448 | } |
| 1449 | } else { |
| 1450 | vxge_debug_init(VXGE_ERR, |
| 1451 | "vxge_hw_vpath_reset failed for" |
| 1452 | "vpath:%d", vp_id); |
| 1453 | return status; |
| 1454 | } |
| 1455 | } else |
| 1456 | return VXGE_HW_FAIL; |
| 1457 | |
| 1458 | vxge_restore_vpath_mac_addr(&vdev->vpaths[vp_id]); |
| 1459 | vxge_restore_vpath_vid_table(&vdev->vpaths[vp_id]); |
| 1460 | |
| 1461 | /* Enable all broadcast */ |
| 1462 | vxge_hw_vpath_bcast_enable(vdev->vpaths[vp_id].handle); |
| 1463 | |
| 1464 | /* Enable the interrupts */ |
| 1465 | vxge_vpath_intr_enable(vdev, vp_id); |
| 1466 | |
| 1467 | smp_wmb(); |
| 1468 | |
| 1469 | /* Enable the flow of traffic through the vpath */ |
| 1470 | vxge_hw_vpath_enable(vdev->vpaths[vp_id].handle); |
| 1471 | |
| 1472 | smp_wmb(); |
| 1473 | vxge_hw_vpath_rx_doorbell_init(vdev->vpaths[vp_id].handle); |
| 1474 | vdev->vpaths[vp_id].ring.last_status = VXGE_HW_OK; |
| 1475 | |
| 1476 | /* Vpath reset done */ |
| 1477 | clear_bit(vp_id, &vdev->vp_reset); |
| 1478 | |
| 1479 | /* Start the vpath queue */ |
| 1480 | vxge_wake_tx_queue(&vdev->vpaths[vp_id].fifo, NULL); |
| 1481 | |
| 1482 | return ret; |
| 1483 | } |
| 1484 | |
| 1485 | static int do_vxge_reset(struct vxgedev *vdev, int event) |
| 1486 | { |
| 1487 | enum vxge_hw_status status; |
| 1488 | int ret = 0, vp_id, i; |
| 1489 | |
| 1490 | vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__); |
| 1491 | |
| 1492 | if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET)) { |
| 1493 | /* check if device is down already */ |
| 1494 | if (unlikely(!is_vxge_card_up(vdev))) |
| 1495 | return 0; |
| 1496 | |
| 1497 | /* is reset already scheduled */ |
| 1498 | if (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state)) |
| 1499 | return 0; |
| 1500 | } |
| 1501 | |
| 1502 | if (event == VXGE_LL_FULL_RESET) { |
| 1503 | /* wait for all the vpath reset to complete */ |
| 1504 | for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) { |
| 1505 | while (test_bit(vp_id, &vdev->vp_reset)) |
| 1506 | msleep(50); |
| 1507 | } |
| 1508 | |
| 1509 | /* if execution mode is set to debug, don't reset the adapter */ |
| 1510 | if (unlikely(vdev->exec_mode)) { |
| 1511 | vxge_debug_init(VXGE_ERR, |
| 1512 | "%s: execution mode is debug, returning..", |
| 1513 | vdev->ndev->name); |
| 1514 | clear_bit(__VXGE_STATE_CARD_UP, &vdev->state); |
| 1515 | vxge_stop_all_tx_queue(vdev); |
| 1516 | return 0; |
| 1517 | } |
| 1518 | } |
| 1519 | |
| 1520 | if (event == VXGE_LL_FULL_RESET) { |
| 1521 | vxge_hw_device_intr_disable(vdev->devh); |
| 1522 | |
| 1523 | switch (vdev->cric_err_event) { |
| 1524 | case VXGE_HW_EVENT_UNKNOWN: |
| 1525 | vxge_stop_all_tx_queue(vdev); |
| 1526 | vxge_debug_init(VXGE_ERR, |
| 1527 | "fatal: %s: Disabling device due to" |
| 1528 | "unknown error", |
| 1529 | vdev->ndev->name); |
| 1530 | ret = -EPERM; |
| 1531 | goto out; |
| 1532 | case VXGE_HW_EVENT_RESET_START: |
| 1533 | break; |
| 1534 | case VXGE_HW_EVENT_RESET_COMPLETE: |
| 1535 | case VXGE_HW_EVENT_LINK_DOWN: |
| 1536 | case VXGE_HW_EVENT_LINK_UP: |
| 1537 | case VXGE_HW_EVENT_ALARM_CLEARED: |
| 1538 | case VXGE_HW_EVENT_ECCERR: |
| 1539 | case VXGE_HW_EVENT_MRPCIM_ECCERR: |
| 1540 | ret = -EPERM; |
| 1541 | goto out; |
| 1542 | case VXGE_HW_EVENT_FIFO_ERR: |
| 1543 | case VXGE_HW_EVENT_VPATH_ERR: |
| 1544 | break; |
| 1545 | case VXGE_HW_EVENT_CRITICAL_ERR: |
| 1546 | vxge_stop_all_tx_queue(vdev); |
| 1547 | vxge_debug_init(VXGE_ERR, |
| 1548 | "fatal: %s: Disabling device due to" |
| 1549 | "serious error", |
| 1550 | vdev->ndev->name); |
| 1551 | /* SOP or device reset required */ |
| 1552 | /* This event is not currently used */ |
| 1553 | ret = -EPERM; |
| 1554 | goto out; |
| 1555 | case VXGE_HW_EVENT_SERR: |
| 1556 | vxge_stop_all_tx_queue(vdev); |
| 1557 | vxge_debug_init(VXGE_ERR, |
| 1558 | "fatal: %s: Disabling device due to" |
| 1559 | "serious error", |
| 1560 | vdev->ndev->name); |
| 1561 | ret = -EPERM; |
| 1562 | goto out; |
| 1563 | case VXGE_HW_EVENT_SRPCIM_SERR: |
| 1564 | case VXGE_HW_EVENT_MRPCIM_SERR: |
| 1565 | ret = -EPERM; |
| 1566 | goto out; |
| 1567 | case VXGE_HW_EVENT_SLOT_FREEZE: |
| 1568 | vxge_stop_all_tx_queue(vdev); |
| 1569 | vxge_debug_init(VXGE_ERR, |
| 1570 | "fatal: %s: Disabling device due to" |
| 1571 | "slot freeze", |
| 1572 | vdev->ndev->name); |
| 1573 | ret = -EPERM; |
| 1574 | goto out; |
| 1575 | default: |
| 1576 | break; |
| 1577 | |
| 1578 | } |
| 1579 | } |
| 1580 | |
| 1581 | if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET)) |
| 1582 | vxge_stop_all_tx_queue(vdev); |
| 1583 | |
| 1584 | if (event == VXGE_LL_FULL_RESET) { |
| 1585 | status = vxge_reset_all_vpaths(vdev); |
| 1586 | if (status != VXGE_HW_OK) { |
| 1587 | vxge_debug_init(VXGE_ERR, |
| 1588 | "fatal: %s: can not reset vpaths", |
| 1589 | vdev->ndev->name); |
| 1590 | ret = -EPERM; |
| 1591 | goto out; |
| 1592 | } |
| 1593 | } |
| 1594 | |
| 1595 | if (event == VXGE_LL_COMPL_RESET) { |
| 1596 | for (i = 0; i < vdev->no_of_vpath; i++) |
| 1597 | if (vdev->vpaths[i].handle) { |
| 1598 | if (vxge_hw_vpath_recover_from_reset( |
| 1599 | vdev->vpaths[i].handle) |
| 1600 | != VXGE_HW_OK) { |
| 1601 | vxge_debug_init(VXGE_ERR, |
| 1602 | "vxge_hw_vpath_recover_" |
| 1603 | "from_reset failed for vpath: " |
| 1604 | "%d", i); |
| 1605 | ret = -EPERM; |
| 1606 | goto out; |
| 1607 | } |
| 1608 | } else { |
| 1609 | vxge_debug_init(VXGE_ERR, |
| 1610 | "vxge_hw_vpath_reset failed for " |
| 1611 | "vpath:%d", i); |
| 1612 | ret = -EPERM; |
| 1613 | goto out; |
| 1614 | } |
| 1615 | } |
| 1616 | |
| 1617 | if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET)) { |
| 1618 | /* Reprogram the DA table with populated mac addresses */ |
| 1619 | for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) { |
| 1620 | vxge_restore_vpath_mac_addr(&vdev->vpaths[vp_id]); |
| 1621 | vxge_restore_vpath_vid_table(&vdev->vpaths[vp_id]); |
| 1622 | } |
| 1623 | |
| 1624 | /* enable vpath interrupts */ |
| 1625 | for (i = 0; i < vdev->no_of_vpath; i++) |
| 1626 | vxge_vpath_intr_enable(vdev, i); |
| 1627 | |
| 1628 | vxge_hw_device_intr_enable(vdev->devh); |
| 1629 | |
| 1630 | smp_wmb(); |
| 1631 | |
| 1632 | /* Indicate card up */ |
| 1633 | set_bit(__VXGE_STATE_CARD_UP, &vdev->state); |
| 1634 | |
| 1635 | /* Get the traffic to flow through the vpaths */ |
| 1636 | for (i = 0; i < vdev->no_of_vpath; i++) { |
| 1637 | vxge_hw_vpath_enable(vdev->vpaths[i].handle); |
| 1638 | smp_wmb(); |
| 1639 | vxge_hw_vpath_rx_doorbell_init(vdev->vpaths[i].handle); |
| 1640 | } |
| 1641 | |
| 1642 | vxge_wake_all_tx_queue(vdev); |
| 1643 | } |
| 1644 | |
| 1645 | out: |
| 1646 | vxge_debug_entryexit(VXGE_TRACE, |
| 1647 | "%s:%d Exiting...", __func__, __LINE__); |
| 1648 | |
| 1649 | /* Indicate reset done */ |
| 1650 | if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET)) |
| 1651 | clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state); |
| 1652 | return ret; |
| 1653 | } |
| 1654 | |
| 1655 | /* |
| 1656 | * vxge_reset |
| 1657 | * @vdev: pointer to ll device |
| 1658 | * |
| 1659 | * driver may reset the chip on events of serr, eccerr, etc |
| 1660 | */ |
| 1661 | int vxge_reset(struct vxgedev *vdev) |
| 1662 | { |
| 1663 | do_vxge_reset(vdev, VXGE_LL_FULL_RESET); |
| 1664 | return 0; |
| 1665 | } |
| 1666 | |
| 1667 | /** |
| 1668 | * vxge_poll - Receive handler when Receive Polling is used. |
| 1669 | * @dev: pointer to the device structure. |
| 1670 | * @budget: Number of packets budgeted to be processed in this iteration. |
| 1671 | * |
| 1672 | * This function comes into picture only if Receive side is being handled |
| 1673 | * through polling (called NAPI in linux). It mostly does what the normal |
| 1674 | * Rx interrupt handler does in terms of descriptor and packet processing |
| 1675 | * but not in an interrupt context. Also it will process a specified number |
| 1676 | * of packets at most in one iteration. This value is passed down by the |
| 1677 | * kernel as the function argument 'budget'. |
| 1678 | */ |
| 1679 | static int vxge_poll_msix(struct napi_struct *napi, int budget) |
| 1680 | { |
| 1681 | struct vxge_ring *ring = |
| 1682 | container_of(napi, struct vxge_ring, napi); |
| 1683 | int budget_org = budget; |
| 1684 | ring->budget = budget; |
| 1685 | |
| 1686 | vxge_hw_vpath_poll_rx(ring->handle); |
| 1687 | |
| 1688 | if (ring->pkts_processed < budget_org) { |
| 1689 | napi_complete(napi); |
| 1690 | /* Re enable the Rx interrupts for the vpath */ |
| 1691 | vxge_hw_channel_msix_unmask( |
| 1692 | (struct __vxge_hw_channel *)ring->handle, |
| 1693 | ring->rx_vector_no); |
| 1694 | } |
| 1695 | |
| 1696 | return ring->pkts_processed; |
| 1697 | } |
| 1698 | |
| 1699 | static int vxge_poll_inta(struct napi_struct *napi, int budget) |
| 1700 | { |
| 1701 | struct vxgedev *vdev = container_of(napi, struct vxgedev, napi); |
| 1702 | int pkts_processed = 0; |
| 1703 | int i; |
| 1704 | int budget_org = budget; |
| 1705 | struct vxge_ring *ring; |
| 1706 | |
| 1707 | struct __vxge_hw_device *hldev = (struct __vxge_hw_device *) |
| 1708 | pci_get_drvdata(vdev->pdev); |
| 1709 | |
| 1710 | for (i = 0; i < vdev->no_of_vpath; i++) { |
| 1711 | ring = &vdev->vpaths[i].ring; |
| 1712 | ring->budget = budget; |
| 1713 | vxge_hw_vpath_poll_rx(ring->handle); |
| 1714 | pkts_processed += ring->pkts_processed; |
| 1715 | budget -= ring->pkts_processed; |
| 1716 | if (budget <= 0) |
| 1717 | break; |
| 1718 | } |
| 1719 | |
| 1720 | VXGE_COMPLETE_ALL_TX(vdev); |
| 1721 | |
| 1722 | if (pkts_processed < budget_org) { |
| 1723 | napi_complete(napi); |
| 1724 | /* Re enable the Rx interrupts for the ring */ |
| 1725 | vxge_hw_device_unmask_all(hldev); |
| 1726 | vxge_hw_device_flush_io(hldev); |
| 1727 | } |
| 1728 | |
| 1729 | return pkts_processed; |
| 1730 | } |
| 1731 | |
| 1732 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 1733 | /** |
| 1734 | * vxge_netpoll - netpoll event handler entry point |
| 1735 | * @dev : pointer to the device structure. |
| 1736 | * Description: |
| 1737 | * This function will be called by upper layer to check for events on the |
| 1738 | * interface in situations where interrupts are disabled. It is used for |
| 1739 | * specific in-kernel networking tasks, such as remote consoles and kernel |
| 1740 | * debugging over the network (example netdump in RedHat). |
| 1741 | */ |
| 1742 | static void vxge_netpoll(struct net_device *dev) |
| 1743 | { |
| 1744 | struct __vxge_hw_device *hldev; |
| 1745 | struct vxgedev *vdev; |
| 1746 | |
| 1747 | vdev = (struct vxgedev *)netdev_priv(dev); |
| 1748 | hldev = (struct __vxge_hw_device *)pci_get_drvdata(vdev->pdev); |
| 1749 | |
| 1750 | vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__); |
| 1751 | |
| 1752 | if (pci_channel_offline(vdev->pdev)) |
| 1753 | return; |
| 1754 | |
| 1755 | disable_irq(dev->irq); |
| 1756 | vxge_hw_device_clear_tx_rx(hldev); |
| 1757 | |
| 1758 | vxge_hw_device_clear_tx_rx(hldev); |
| 1759 | VXGE_COMPLETE_ALL_RX(vdev); |
| 1760 | VXGE_COMPLETE_ALL_TX(vdev); |
| 1761 | |
| 1762 | enable_irq(dev->irq); |
| 1763 | |
| 1764 | vxge_debug_entryexit(VXGE_TRACE, |
| 1765 | "%s:%d Exiting...", __func__, __LINE__); |
| 1766 | return; |
| 1767 | } |
| 1768 | #endif |
| 1769 | |
| 1770 | /* RTH configuration */ |
| 1771 | static enum vxge_hw_status vxge_rth_configure(struct vxgedev *vdev) |
| 1772 | { |
| 1773 | enum vxge_hw_status status = VXGE_HW_OK; |
| 1774 | struct vxge_hw_rth_hash_types hash_types; |
| 1775 | u8 itable[256] = {0}; /* indirection table */ |
| 1776 | u8 mtable[256] = {0}; /* CPU to vpath mapping */ |
| 1777 | int index; |
| 1778 | |
| 1779 | /* |
| 1780 | * Filling |
| 1781 | * - itable with bucket numbers |
| 1782 | * - mtable with bucket-to-vpath mapping |
| 1783 | */ |
| 1784 | for (index = 0; index < (1 << vdev->config.rth_bkt_sz); index++) { |
| 1785 | itable[index] = index; |
| 1786 | mtable[index] = index % vdev->no_of_vpath; |
| 1787 | } |
| 1788 | |
| 1789 | /* Fill RTH hash types */ |
| 1790 | hash_types.hash_type_tcpipv4_en = vdev->config.rth_hash_type_tcpipv4; |
| 1791 | hash_types.hash_type_ipv4_en = vdev->config.rth_hash_type_ipv4; |
| 1792 | hash_types.hash_type_tcpipv6_en = vdev->config.rth_hash_type_tcpipv6; |
| 1793 | hash_types.hash_type_ipv6_en = vdev->config.rth_hash_type_ipv6; |
| 1794 | hash_types.hash_type_tcpipv6ex_en = |
| 1795 | vdev->config.rth_hash_type_tcpipv6ex; |
| 1796 | hash_types.hash_type_ipv6ex_en = vdev->config.rth_hash_type_ipv6ex; |
| 1797 | |
| 1798 | /* set indirection table, bucket-to-vpath mapping */ |
| 1799 | status = vxge_hw_vpath_rts_rth_itable_set(vdev->vp_handles, |
| 1800 | vdev->no_of_vpath, |
| 1801 | mtable, itable, |
| 1802 | vdev->config.rth_bkt_sz); |
| 1803 | if (status != VXGE_HW_OK) { |
| 1804 | vxge_debug_init(VXGE_ERR, |
| 1805 | "RTH indirection table configuration failed " |
| 1806 | "for vpath:%d", vdev->vpaths[0].device_id); |
| 1807 | return status; |
| 1808 | } |
| 1809 | |
| 1810 | /* |
| 1811 | * Because the itable_set() method uses the active_table field |
| 1812 | * for the target virtual path the RTH config should be updated |
| 1813 | * for all VPATHs. The h/w only uses the lowest numbered VPATH |
| 1814 | * when steering frames. |
| 1815 | */ |
| 1816 | for (index = 0; index < vdev->no_of_vpath; index++) { |
| 1817 | status = vxge_hw_vpath_rts_rth_set( |
| 1818 | vdev->vpaths[index].handle, |
| 1819 | vdev->config.rth_algorithm, |
| 1820 | &hash_types, |
| 1821 | vdev->config.rth_bkt_sz); |
| 1822 | |
| 1823 | if (status != VXGE_HW_OK) { |
| 1824 | vxge_debug_init(VXGE_ERR, |
| 1825 | "RTH configuration failed for vpath:%d", |
| 1826 | vdev->vpaths[index].device_id); |
| 1827 | return status; |
| 1828 | } |
| 1829 | } |
| 1830 | |
| 1831 | return status; |
| 1832 | } |
| 1833 | |
| 1834 | int vxge_mac_list_add(struct vxge_vpath *vpath, struct macInfo *mac) |
| 1835 | { |
| 1836 | struct vxge_mac_addrs *new_mac_entry; |
| 1837 | u8 *mac_address = NULL; |
| 1838 | |
| 1839 | if (vpath->mac_addr_cnt >= VXGE_MAX_LEARN_MAC_ADDR_CNT) |
| 1840 | return TRUE; |
| 1841 | |
| 1842 | new_mac_entry = kzalloc(sizeof(struct vxge_mac_addrs), GFP_ATOMIC); |
| 1843 | if (!new_mac_entry) { |
| 1844 | vxge_debug_mem(VXGE_ERR, |
| 1845 | "%s: memory allocation failed", |
| 1846 | VXGE_DRIVER_NAME); |
| 1847 | return FALSE; |
| 1848 | } |
| 1849 | |
| 1850 | list_add(&new_mac_entry->item, &vpath->mac_addr_list); |
| 1851 | |
| 1852 | /* Copy the new mac address to the list */ |
| 1853 | mac_address = (u8 *)&new_mac_entry->macaddr; |
| 1854 | memcpy(mac_address, mac->macaddr, ETH_ALEN); |
| 1855 | |
| 1856 | new_mac_entry->state = mac->state; |
| 1857 | vpath->mac_addr_cnt++; |
| 1858 | |
| 1859 | /* Is this a multicast address */ |
| 1860 | if (0x01 & mac->macaddr[0]) |
| 1861 | vpath->mcast_addr_cnt++; |
| 1862 | |
| 1863 | return TRUE; |
| 1864 | } |
| 1865 | |
| 1866 | /* Add a mac address to DA table */ |
| 1867 | enum vxge_hw_status vxge_add_mac_addr(struct vxgedev *vdev, struct macInfo *mac) |
| 1868 | { |
| 1869 | enum vxge_hw_status status = VXGE_HW_OK; |
| 1870 | struct vxge_vpath *vpath; |
| 1871 | enum vxge_hw_vpath_mac_addr_add_mode duplicate_mode; |
| 1872 | |
| 1873 | if (0x01 & mac->macaddr[0]) /* multicast address */ |
| 1874 | duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE; |
| 1875 | else |
| 1876 | duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_REPLACE_DUPLICATE; |
| 1877 | |
| 1878 | vpath = &vdev->vpaths[mac->vpath_no]; |
| 1879 | status = vxge_hw_vpath_mac_addr_add(vpath->handle, mac->macaddr, |
| 1880 | mac->macmask, duplicate_mode); |
| 1881 | if (status != VXGE_HW_OK) { |
| 1882 | vxge_debug_init(VXGE_ERR, |
| 1883 | "DA config add entry failed for vpath:%d", |
| 1884 | vpath->device_id); |
| 1885 | } else |
| 1886 | if (FALSE == vxge_mac_list_add(vpath, mac)) |
| 1887 | status = -EPERM; |
| 1888 | |
| 1889 | return status; |
| 1890 | } |
| 1891 | |
| 1892 | int vxge_mac_list_del(struct vxge_vpath *vpath, struct macInfo *mac) |
| 1893 | { |
| 1894 | struct list_head *entry, *next; |
| 1895 | u64 del_mac = 0; |
| 1896 | u8 *mac_address = (u8 *) (&del_mac); |
| 1897 | |
| 1898 | /* Copy the mac address to delete from the list */ |
| 1899 | memcpy(mac_address, mac->macaddr, ETH_ALEN); |
| 1900 | |
| 1901 | list_for_each_safe(entry, next, &vpath->mac_addr_list) { |
| 1902 | if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac) { |
| 1903 | list_del(entry); |
| 1904 | kfree((struct vxge_mac_addrs *)entry); |
| 1905 | vpath->mac_addr_cnt--; |
| 1906 | |
| 1907 | /* Is this a multicast address */ |
| 1908 | if (0x01 & mac->macaddr[0]) |
| 1909 | vpath->mcast_addr_cnt--; |
| 1910 | return TRUE; |
| 1911 | } |
| 1912 | } |
| 1913 | |
| 1914 | return FALSE; |
| 1915 | } |
| 1916 | /* delete a mac address from DA table */ |
| 1917 | enum vxge_hw_status vxge_del_mac_addr(struct vxgedev *vdev, struct macInfo *mac) |
| 1918 | { |
| 1919 | enum vxge_hw_status status = VXGE_HW_OK; |
| 1920 | struct vxge_vpath *vpath; |
| 1921 | |
| 1922 | vpath = &vdev->vpaths[mac->vpath_no]; |
| 1923 | status = vxge_hw_vpath_mac_addr_delete(vpath->handle, mac->macaddr, |
| 1924 | mac->macmask); |
| 1925 | if (status != VXGE_HW_OK) { |
| 1926 | vxge_debug_init(VXGE_ERR, |
| 1927 | "DA config delete entry failed for vpath:%d", |
| 1928 | vpath->device_id); |
| 1929 | } else |
| 1930 | vxge_mac_list_del(vpath, mac); |
| 1931 | return status; |
| 1932 | } |
| 1933 | |
| 1934 | /* list all mac addresses from DA table */ |
| 1935 | enum vxge_hw_status |
| 1936 | static vxge_search_mac_addr_in_da_table(struct vxge_vpath *vpath, |
| 1937 | struct macInfo *mac) |
| 1938 | { |
| 1939 | enum vxge_hw_status status = VXGE_HW_OK; |
| 1940 | unsigned char macmask[ETH_ALEN]; |
| 1941 | unsigned char macaddr[ETH_ALEN]; |
| 1942 | |
| 1943 | status = vxge_hw_vpath_mac_addr_get(vpath->handle, |
| 1944 | macaddr, macmask); |
| 1945 | if (status != VXGE_HW_OK) { |
| 1946 | vxge_debug_init(VXGE_ERR, |
| 1947 | "DA config list entry failed for vpath:%d", |
| 1948 | vpath->device_id); |
| 1949 | return status; |
| 1950 | } |
| 1951 | |
| 1952 | while (memcmp(mac->macaddr, macaddr, ETH_ALEN)) { |
| 1953 | |
| 1954 | status = vxge_hw_vpath_mac_addr_get_next(vpath->handle, |
| 1955 | macaddr, macmask); |
| 1956 | if (status != VXGE_HW_OK) |
| 1957 | break; |
| 1958 | } |
| 1959 | |
| 1960 | return status; |
| 1961 | } |
| 1962 | |
| 1963 | /* Store all vlan ids from the list to the vid table */ |
| 1964 | enum vxge_hw_status vxge_restore_vpath_vid_table(struct vxge_vpath *vpath) |
| 1965 | { |
| 1966 | enum vxge_hw_status status = VXGE_HW_OK; |
| 1967 | struct vxgedev *vdev = vpath->vdev; |
| 1968 | u16 vid; |
| 1969 | |
| 1970 | if (vdev->vlgrp && vpath->is_open) { |
| 1971 | |
| 1972 | for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) { |
| 1973 | if (!vlan_group_get_device(vdev->vlgrp, vid)) |
| 1974 | continue; |
| 1975 | /* Add these vlan to the vid table */ |
| 1976 | status = vxge_hw_vpath_vid_add(vpath->handle, vid); |
| 1977 | } |
| 1978 | } |
| 1979 | |
| 1980 | return status; |
| 1981 | } |
| 1982 | |
| 1983 | /* Store all mac addresses from the list to the DA table */ |
| 1984 | enum vxge_hw_status vxge_restore_vpath_mac_addr(struct vxge_vpath *vpath) |
| 1985 | { |
| 1986 | enum vxge_hw_status status = VXGE_HW_OK; |
| 1987 | struct macInfo mac_info; |
| 1988 | u8 *mac_address = NULL; |
| 1989 | struct list_head *entry, *next; |
| 1990 | |
| 1991 | memset(&mac_info, 0, sizeof(struct macInfo)); |
| 1992 | |
| 1993 | if (vpath->is_open) { |
| 1994 | |
| 1995 | list_for_each_safe(entry, next, &vpath->mac_addr_list) { |
| 1996 | mac_address = |
| 1997 | (u8 *)& |
| 1998 | ((struct vxge_mac_addrs *)entry)->macaddr; |
| 1999 | memcpy(mac_info.macaddr, mac_address, ETH_ALEN); |
| 2000 | ((struct vxge_mac_addrs *)entry)->state = |
| 2001 | VXGE_LL_MAC_ADDR_IN_DA_TABLE; |
| 2002 | /* does this mac address already exist in da table? */ |
| 2003 | status = vxge_search_mac_addr_in_da_table(vpath, |
| 2004 | &mac_info); |
| 2005 | if (status != VXGE_HW_OK) { |
| 2006 | /* Add this mac address to the DA table */ |
| 2007 | status = vxge_hw_vpath_mac_addr_add( |
| 2008 | vpath->handle, mac_info.macaddr, |
| 2009 | mac_info.macmask, |
| 2010 | VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE); |
| 2011 | if (status != VXGE_HW_OK) { |
| 2012 | vxge_debug_init(VXGE_ERR, |
| 2013 | "DA add entry failed for vpath:%d", |
| 2014 | vpath->device_id); |
| 2015 | ((struct vxge_mac_addrs *)entry)->state |
| 2016 | = VXGE_LL_MAC_ADDR_IN_LIST; |
| 2017 | } |
| 2018 | } |
| 2019 | } |
| 2020 | } |
| 2021 | |
| 2022 | return status; |
| 2023 | } |
| 2024 | |
| 2025 | /* reset vpaths */ |
| 2026 | enum vxge_hw_status vxge_reset_all_vpaths(struct vxgedev *vdev) |
| 2027 | { |
| 2028 | int i; |
| 2029 | enum vxge_hw_status status = VXGE_HW_OK; |
| 2030 | |
| 2031 | for (i = 0; i < vdev->no_of_vpath; i++) |
| 2032 | if (vdev->vpaths[i].handle) { |
| 2033 | if (vxge_hw_vpath_reset(vdev->vpaths[i].handle) |
| 2034 | == VXGE_HW_OK) { |
| 2035 | if (is_vxge_card_up(vdev) && |
| 2036 | vxge_hw_vpath_recover_from_reset( |
| 2037 | vdev->vpaths[i].handle) |
| 2038 | != VXGE_HW_OK) { |
| 2039 | vxge_debug_init(VXGE_ERR, |
| 2040 | "vxge_hw_vpath_recover_" |
| 2041 | "from_reset failed for vpath: " |
| 2042 | "%d", i); |
| 2043 | return status; |
| 2044 | } |
| 2045 | } else { |
| 2046 | vxge_debug_init(VXGE_ERR, |
| 2047 | "vxge_hw_vpath_reset failed for " |
| 2048 | "vpath:%d", i); |
| 2049 | return status; |
| 2050 | } |
| 2051 | } |
| 2052 | return status; |
| 2053 | } |
| 2054 | |
| 2055 | /* close vpaths */ |
| 2056 | void vxge_close_vpaths(struct vxgedev *vdev, int index) |
| 2057 | { |
| 2058 | int i; |
| 2059 | for (i = index; i < vdev->no_of_vpath; i++) { |
| 2060 | if (vdev->vpaths[i].handle && vdev->vpaths[i].is_open) { |
| 2061 | vxge_hw_vpath_close(vdev->vpaths[i].handle); |
| 2062 | vdev->stats.vpaths_open--; |
| 2063 | } |
| 2064 | vdev->vpaths[i].is_open = 0; |
| 2065 | vdev->vpaths[i].handle = NULL; |
| 2066 | } |
| 2067 | } |
| 2068 | |
| 2069 | /* open vpaths */ |
| 2070 | int vxge_open_vpaths(struct vxgedev *vdev) |
| 2071 | { |
| 2072 | enum vxge_hw_status status; |
| 2073 | int i; |
| 2074 | u32 vp_id = 0; |
| 2075 | struct vxge_hw_vpath_attr attr; |
| 2076 | |
| 2077 | for (i = 0; i < vdev->no_of_vpath; i++) { |
| 2078 | vxge_assert(vdev->vpaths[i].is_configured); |
| 2079 | attr.vp_id = vdev->vpaths[i].device_id; |
| 2080 | attr.fifo_attr.callback = vxge_xmit_compl; |
| 2081 | attr.fifo_attr.txdl_term = vxge_tx_term; |
| 2082 | attr.fifo_attr.per_txdl_space = sizeof(struct vxge_tx_priv); |
| 2083 | attr.fifo_attr.userdata = (void *)&vdev->vpaths[i].fifo; |
| 2084 | |
| 2085 | attr.ring_attr.callback = vxge_rx_1b_compl; |
| 2086 | attr.ring_attr.rxd_init = vxge_rx_initial_replenish; |
| 2087 | attr.ring_attr.rxd_term = vxge_rx_term; |
| 2088 | attr.ring_attr.per_rxd_space = sizeof(struct vxge_rx_priv); |
| 2089 | attr.ring_attr.userdata = (void *)&vdev->vpaths[i].ring; |
| 2090 | |
| 2091 | vdev->vpaths[i].ring.ndev = vdev->ndev; |
| 2092 | vdev->vpaths[i].ring.pdev = vdev->pdev; |
| 2093 | status = vxge_hw_vpath_open(vdev->devh, &attr, |
| 2094 | &(vdev->vpaths[i].handle)); |
| 2095 | if (status == VXGE_HW_OK) { |
| 2096 | vdev->vpaths[i].fifo.handle = |
| 2097 | (struct __vxge_hw_fifo *)attr.fifo_attr.userdata; |
| 2098 | vdev->vpaths[i].ring.handle = |
| 2099 | (struct __vxge_hw_ring *)attr.ring_attr.userdata; |
| 2100 | vdev->vpaths[i].fifo.tx_steering_type = |
| 2101 | vdev->config.tx_steering_type; |
| 2102 | vdev->vpaths[i].fifo.ndev = vdev->ndev; |
| 2103 | vdev->vpaths[i].fifo.pdev = vdev->pdev; |
| 2104 | vdev->vpaths[i].fifo.indicate_max_pkts = |
| 2105 | vdev->config.fifo_indicate_max_pkts; |
| 2106 | vdev->vpaths[i].ring.rx_vector_no = 0; |
| 2107 | vdev->vpaths[i].ring.rx_csum = vdev->rx_csum; |
| 2108 | vdev->vpaths[i].is_open = 1; |
| 2109 | vdev->vp_handles[i] = vdev->vpaths[i].handle; |
| 2110 | vdev->vpaths[i].ring.gro_enable = |
| 2111 | vdev->config.gro_enable; |
| 2112 | vdev->vpaths[i].ring.vlan_tag_strip = |
| 2113 | vdev->vlan_tag_strip; |
| 2114 | vdev->stats.vpaths_open++; |
| 2115 | } else { |
| 2116 | vdev->stats.vpath_open_fail++; |
| 2117 | vxge_debug_init(VXGE_ERR, |
| 2118 | "%s: vpath: %d failed to open " |
| 2119 | "with status: %d", |
| 2120 | vdev->ndev->name, vdev->vpaths[i].device_id, |
| 2121 | status); |
| 2122 | vxge_close_vpaths(vdev, 0); |
| 2123 | return -EPERM; |
| 2124 | } |
| 2125 | |
| 2126 | vp_id = |
| 2127 | ((struct __vxge_hw_vpath_handle *)vdev->vpaths[i].handle)-> |
| 2128 | vpath->vp_id; |
| 2129 | vdev->vpaths_deployed |= vxge_mBIT(vp_id); |
| 2130 | } |
| 2131 | return VXGE_HW_OK; |
| 2132 | } |
| 2133 | |
| 2134 | /* |
| 2135 | * vxge_isr_napi |
| 2136 | * @irq: the irq of the device. |
| 2137 | * @dev_id: a void pointer to the hldev structure of the Titan device |
| 2138 | * @ptregs: pointer to the registers pushed on the stack. |
| 2139 | * |
| 2140 | * This function is the ISR handler of the device when napi is enabled. It |
| 2141 | * identifies the reason for the interrupt and calls the relevant service |
| 2142 | * routines. |
| 2143 | */ |
| 2144 | static irqreturn_t vxge_isr_napi(int irq, void *dev_id) |
| 2145 | { |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 2146 | struct net_device *dev; |
Sreenivasa Honnur | a5d165b | 2009-07-01 21:16:37 +0000 | [diff] [blame] | 2147 | struct __vxge_hw_device *hldev; |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 2148 | u64 reason; |
| 2149 | enum vxge_hw_status status; |
Sreenivasa Honnur | a5d165b | 2009-07-01 21:16:37 +0000 | [diff] [blame] | 2150 | struct vxgedev *vdev = (struct vxgedev *) dev_id;; |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 2151 | |
| 2152 | vxge_debug_intr(VXGE_TRACE, "%s:%d", __func__, __LINE__); |
| 2153 | |
Sreenivasa Honnur | a5d165b | 2009-07-01 21:16:37 +0000 | [diff] [blame] | 2154 | dev = vdev->ndev; |
| 2155 | hldev = (struct __vxge_hw_device *)pci_get_drvdata(vdev->pdev); |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 2156 | |
| 2157 | if (pci_channel_offline(vdev->pdev)) |
| 2158 | return IRQ_NONE; |
| 2159 | |
| 2160 | if (unlikely(!is_vxge_card_up(vdev))) |
| 2161 | return IRQ_NONE; |
| 2162 | |
| 2163 | status = vxge_hw_device_begin_irq(hldev, vdev->exec_mode, |
| 2164 | &reason); |
| 2165 | if (status == VXGE_HW_OK) { |
| 2166 | vxge_hw_device_mask_all(hldev); |
| 2167 | |
| 2168 | if (reason & |
| 2169 | VXGE_HW_TITAN_GENERAL_INT_STATUS_VPATH_TRAFFIC_INT( |
| 2170 | vdev->vpaths_deployed >> |
| 2171 | (64 - VXGE_HW_MAX_VIRTUAL_PATHS))) { |
| 2172 | |
| 2173 | vxge_hw_device_clear_tx_rx(hldev); |
| 2174 | napi_schedule(&vdev->napi); |
| 2175 | vxge_debug_intr(VXGE_TRACE, |
| 2176 | "%s:%d Exiting...", __func__, __LINE__); |
| 2177 | return IRQ_HANDLED; |
| 2178 | } else |
| 2179 | vxge_hw_device_unmask_all(hldev); |
| 2180 | } else if (unlikely((status == VXGE_HW_ERR_VPATH) || |
| 2181 | (status == VXGE_HW_ERR_CRITICAL) || |
| 2182 | (status == VXGE_HW_ERR_FIFO))) { |
| 2183 | vxge_hw_device_mask_all(hldev); |
| 2184 | vxge_hw_device_flush_io(hldev); |
| 2185 | return IRQ_HANDLED; |
| 2186 | } else if (unlikely(status == VXGE_HW_ERR_SLOT_FREEZE)) |
| 2187 | return IRQ_HANDLED; |
| 2188 | |
| 2189 | vxge_debug_intr(VXGE_TRACE, "%s:%d Exiting...", __func__, __LINE__); |
| 2190 | return IRQ_NONE; |
| 2191 | } |
| 2192 | |
| 2193 | #ifdef CONFIG_PCI_MSI |
| 2194 | |
| 2195 | static irqreturn_t |
| 2196 | vxge_tx_msix_handle(int irq, void *dev_id) |
| 2197 | { |
| 2198 | struct vxge_fifo *fifo = (struct vxge_fifo *)dev_id; |
| 2199 | |
| 2200 | VXGE_COMPLETE_VPATH_TX(fifo); |
| 2201 | |
| 2202 | return IRQ_HANDLED; |
| 2203 | } |
| 2204 | |
| 2205 | static irqreturn_t |
| 2206 | vxge_rx_msix_napi_handle(int irq, void *dev_id) |
| 2207 | { |
| 2208 | struct vxge_ring *ring = (struct vxge_ring *)dev_id; |
| 2209 | |
| 2210 | /* MSIX_IDX for Rx is 1 */ |
| 2211 | vxge_hw_channel_msix_mask((struct __vxge_hw_channel *)ring->handle, |
| 2212 | ring->rx_vector_no); |
| 2213 | |
| 2214 | napi_schedule(&ring->napi); |
| 2215 | return IRQ_HANDLED; |
| 2216 | } |
| 2217 | |
| 2218 | static irqreturn_t |
| 2219 | vxge_alarm_msix_handle(int irq, void *dev_id) |
| 2220 | { |
| 2221 | int i; |
| 2222 | enum vxge_hw_status status; |
| 2223 | struct vxge_vpath *vpath = (struct vxge_vpath *)dev_id; |
| 2224 | struct vxgedev *vdev = vpath->vdev; |
Sreenivasa Honnur | b59c945 | 2010-03-28 22:11:41 +0000 | [diff] [blame] | 2225 | int msix_id = (vpath->handle->vpath->vp_id * |
| 2226 | VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID; |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 2227 | |
| 2228 | for (i = 0; i < vdev->no_of_vpath; i++) { |
Sreenivasa Honnur | b59c945 | 2010-03-28 22:11:41 +0000 | [diff] [blame] | 2229 | vxge_hw_vpath_msix_mask(vdev->vpaths[i].handle, msix_id); |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 2230 | |
| 2231 | status = vxge_hw_vpath_alarm_process(vdev->vpaths[i].handle, |
| 2232 | vdev->exec_mode); |
| 2233 | if (status == VXGE_HW_OK) { |
| 2234 | |
| 2235 | vxge_hw_vpath_msix_unmask(vdev->vpaths[i].handle, |
Sreenivasa Honnur | b59c945 | 2010-03-28 22:11:41 +0000 | [diff] [blame] | 2236 | msix_id); |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 2237 | continue; |
| 2238 | } |
| 2239 | vxge_debug_intr(VXGE_ERR, |
| 2240 | "%s: vxge_hw_vpath_alarm_process failed %x ", |
| 2241 | VXGE_DRIVER_NAME, status); |
| 2242 | } |
| 2243 | return IRQ_HANDLED; |
| 2244 | } |
| 2245 | |
| 2246 | static int vxge_alloc_msix(struct vxgedev *vdev) |
| 2247 | { |
| 2248 | int j, i, ret = 0; |
Sreenivasa Honnur | b59c945 | 2010-03-28 22:11:41 +0000 | [diff] [blame] | 2249 | int msix_intr_vect = 0, temp; |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 2250 | vdev->intr_cnt = 0; |
| 2251 | |
Sreenivasa Honnur | b59c945 | 2010-03-28 22:11:41 +0000 | [diff] [blame] | 2252 | start: |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 2253 | /* Tx/Rx MSIX Vectors count */ |
| 2254 | vdev->intr_cnt = vdev->no_of_vpath * 2; |
| 2255 | |
| 2256 | /* Alarm MSIX Vectors count */ |
| 2257 | vdev->intr_cnt++; |
| 2258 | |
Sreenivasa Honnur | b59c945 | 2010-03-28 22:11:41 +0000 | [diff] [blame] | 2259 | vdev->entries = kzalloc(vdev->intr_cnt * sizeof(struct msix_entry), |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 2260 | GFP_KERNEL); |
| 2261 | if (!vdev->entries) { |
| 2262 | vxge_debug_init(VXGE_ERR, |
| 2263 | "%s: memory allocation failed", |
| 2264 | VXGE_DRIVER_NAME); |
| 2265 | return -ENOMEM; |
| 2266 | } |
| 2267 | |
Sreenivasa Honnur | b59c945 | 2010-03-28 22:11:41 +0000 | [diff] [blame] | 2268 | vdev->vxge_entries = |
| 2269 | kzalloc(vdev->intr_cnt * sizeof(struct vxge_msix_entry), |
| 2270 | GFP_KERNEL); |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 2271 | if (!vdev->vxge_entries) { |
| 2272 | vxge_debug_init(VXGE_ERR, "%s: memory allocation failed", |
| 2273 | VXGE_DRIVER_NAME); |
| 2274 | kfree(vdev->entries); |
| 2275 | return -ENOMEM; |
| 2276 | } |
| 2277 | |
Sreenivasa Honnur | b59c945 | 2010-03-28 22:11:41 +0000 | [diff] [blame] | 2278 | for (i = 0, j = 0; i < vdev->no_of_vpath; i++) { |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 2279 | |
| 2280 | msix_intr_vect = i * VXGE_HW_VPATH_MSIX_ACTIVE; |
| 2281 | |
| 2282 | /* Initialize the fifo vector */ |
| 2283 | vdev->entries[j].entry = msix_intr_vect; |
| 2284 | vdev->vxge_entries[j].entry = msix_intr_vect; |
| 2285 | vdev->vxge_entries[j].in_use = 0; |
| 2286 | j++; |
| 2287 | |
| 2288 | /* Initialize the ring vector */ |
| 2289 | vdev->entries[j].entry = msix_intr_vect + 1; |
| 2290 | vdev->vxge_entries[j].entry = msix_intr_vect + 1; |
| 2291 | vdev->vxge_entries[j].in_use = 0; |
| 2292 | j++; |
| 2293 | } |
| 2294 | |
| 2295 | /* Initialize the alarm vector */ |
Sreenivasa Honnur | b59c945 | 2010-03-28 22:11:41 +0000 | [diff] [blame] | 2296 | vdev->entries[j].entry = VXGE_ALARM_MSIX_ID; |
| 2297 | vdev->vxge_entries[j].entry = VXGE_ALARM_MSIX_ID; |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 2298 | vdev->vxge_entries[j].in_use = 0; |
| 2299 | |
Sreenivasa Honnur | b59c945 | 2010-03-28 22:11:41 +0000 | [diff] [blame] | 2300 | ret = pci_enable_msix(vdev->pdev, vdev->entries, vdev->intr_cnt); |
| 2301 | |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 2302 | if (ret > 0) { |
| 2303 | vxge_debug_init(VXGE_ERR, |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 2304 | "%s: MSI-X enable failed for %d vectors, ret: %d", |
Sreenivasa Honnur | b59c945 | 2010-03-28 22:11:41 +0000 | [diff] [blame] | 2305 | VXGE_DRIVER_NAME, vdev->intr_cnt, ret); |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 2306 | kfree(vdev->entries); |
| 2307 | kfree(vdev->vxge_entries); |
| 2308 | vdev->entries = NULL; |
| 2309 | vdev->vxge_entries = NULL; |
Sreenivasa Honnur | b59c945 | 2010-03-28 22:11:41 +0000 | [diff] [blame] | 2310 | |
| 2311 | if ((max_config_vpath != VXGE_USE_DEFAULT) || (ret < 3)) |
| 2312 | return -ENODEV; |
| 2313 | /* Try with less no of vector by reducing no of vpaths count */ |
| 2314 | temp = (ret - 1)/2; |
| 2315 | vxge_close_vpaths(vdev, temp); |
| 2316 | vdev->no_of_vpath = temp; |
| 2317 | goto start; |
| 2318 | } else if (ret < 0) |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 2319 | return -ENODEV; |
Sreenivasa Honnur | b59c945 | 2010-03-28 22:11:41 +0000 | [diff] [blame] | 2320 | |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 2321 | return 0; |
| 2322 | } |
| 2323 | |
| 2324 | static int vxge_enable_msix(struct vxgedev *vdev) |
| 2325 | { |
| 2326 | |
| 2327 | int i, ret = 0; |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 2328 | /* 0 - Tx, 1 - Rx */ |
Sreenivasa Honnur | b59c945 | 2010-03-28 22:11:41 +0000 | [diff] [blame] | 2329 | int tim_msix_id[4] = {0, 1, 0, 0}; |
| 2330 | |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 2331 | vdev->intr_cnt = 0; |
| 2332 | |
| 2333 | /* allocate msix vectors */ |
| 2334 | ret = vxge_alloc_msix(vdev); |
| 2335 | if (!ret) { |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 2336 | for (i = 0; i < vdev->no_of_vpath; i++) { |
| 2337 | |
| 2338 | /* If fifo or ring are not enabled |
| 2339 | the MSIX vector for that should be set to 0 |
| 2340 | Hence initializeing this array to all 0s. |
| 2341 | */ |
Sreenivasa Honnur | b59c945 | 2010-03-28 22:11:41 +0000 | [diff] [blame] | 2342 | vdev->vpaths[i].ring.rx_vector_no = |
| 2343 | (vdev->vpaths[i].device_id * |
| 2344 | VXGE_HW_VPATH_MSIX_ACTIVE) + 1; |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 2345 | |
Sreenivasa Honnur | b59c945 | 2010-03-28 22:11:41 +0000 | [diff] [blame] | 2346 | vxge_hw_vpath_msix_set(vdev->vpaths[i].handle, |
| 2347 | tim_msix_id, VXGE_ALARM_MSIX_ID); |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 2348 | } |
| 2349 | } |
| 2350 | |
| 2351 | return ret; |
| 2352 | } |
| 2353 | |
| 2354 | static void vxge_rem_msix_isr(struct vxgedev *vdev) |
| 2355 | { |
| 2356 | int intr_cnt; |
| 2357 | |
Sreenivasa Honnur | b59c945 | 2010-03-28 22:11:41 +0000 | [diff] [blame] | 2358 | for (intr_cnt = 0; intr_cnt < (vdev->no_of_vpath * 2 + 1); |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 2359 | intr_cnt++) { |
| 2360 | if (vdev->vxge_entries[intr_cnt].in_use) { |
| 2361 | synchronize_irq(vdev->entries[intr_cnt].vector); |
| 2362 | free_irq(vdev->entries[intr_cnt].vector, |
| 2363 | vdev->vxge_entries[intr_cnt].arg); |
| 2364 | vdev->vxge_entries[intr_cnt].in_use = 0; |
| 2365 | } |
| 2366 | } |
| 2367 | |
| 2368 | kfree(vdev->entries); |
| 2369 | kfree(vdev->vxge_entries); |
| 2370 | vdev->entries = NULL; |
| 2371 | vdev->vxge_entries = NULL; |
| 2372 | |
| 2373 | if (vdev->config.intr_type == MSI_X) |
| 2374 | pci_disable_msix(vdev->pdev); |
| 2375 | } |
| 2376 | #endif |
| 2377 | |
| 2378 | static void vxge_rem_isr(struct vxgedev *vdev) |
| 2379 | { |
| 2380 | struct __vxge_hw_device *hldev; |
| 2381 | hldev = (struct __vxge_hw_device *) pci_get_drvdata(vdev->pdev); |
| 2382 | |
| 2383 | #ifdef CONFIG_PCI_MSI |
| 2384 | if (vdev->config.intr_type == MSI_X) { |
| 2385 | vxge_rem_msix_isr(vdev); |
| 2386 | } else |
| 2387 | #endif |
| 2388 | if (vdev->config.intr_type == INTA) { |
| 2389 | synchronize_irq(vdev->pdev->irq); |
Sreenivasa Honnur | a5d165b | 2009-07-01 21:16:37 +0000 | [diff] [blame] | 2390 | free_irq(vdev->pdev->irq, vdev); |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 2391 | } |
| 2392 | } |
| 2393 | |
| 2394 | static int vxge_add_isr(struct vxgedev *vdev) |
| 2395 | { |
| 2396 | int ret = 0; |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 2397 | #ifdef CONFIG_PCI_MSI |
| 2398 | int vp_idx = 0, intr_idx = 0, intr_cnt = 0, msix_idx = 0, irq_req = 0; |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 2399 | int pci_fun = PCI_FUNC(vdev->pdev->devfn); |
| 2400 | |
| 2401 | if (vdev->config.intr_type == MSI_X) |
| 2402 | ret = vxge_enable_msix(vdev); |
| 2403 | |
| 2404 | if (ret) { |
| 2405 | vxge_debug_init(VXGE_ERR, |
| 2406 | "%s: Enabling MSI-X Failed", VXGE_DRIVER_NAME); |
Sreenivasa Honnur | eb5f10c | 2009-10-05 01:57:29 +0000 | [diff] [blame] | 2407 | vxge_debug_init(VXGE_ERR, |
| 2408 | "%s: Defaulting to INTA", VXGE_DRIVER_NAME); |
| 2409 | vdev->config.intr_type = INTA; |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 2410 | } |
| 2411 | |
| 2412 | if (vdev->config.intr_type == MSI_X) { |
| 2413 | for (intr_idx = 0; |
| 2414 | intr_idx < (vdev->no_of_vpath * |
| 2415 | VXGE_HW_VPATH_MSIX_ACTIVE); intr_idx++) { |
| 2416 | |
| 2417 | msix_idx = intr_idx % VXGE_HW_VPATH_MSIX_ACTIVE; |
| 2418 | irq_req = 0; |
| 2419 | |
| 2420 | switch (msix_idx) { |
| 2421 | case 0: |
| 2422 | snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN, |
Sreenivasa Honnur | b59c945 | 2010-03-28 22:11:41 +0000 | [diff] [blame] | 2423 | "%s:vxge:MSI-X %d - Tx - fn:%d vpath:%d", |
| 2424 | vdev->ndev->name, |
| 2425 | vdev->entries[intr_cnt].entry, |
| 2426 | pci_fun, vp_idx); |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 2427 | ret = request_irq( |
| 2428 | vdev->entries[intr_cnt].vector, |
| 2429 | vxge_tx_msix_handle, 0, |
| 2430 | vdev->desc[intr_cnt], |
| 2431 | &vdev->vpaths[vp_idx].fifo); |
| 2432 | vdev->vxge_entries[intr_cnt].arg = |
| 2433 | &vdev->vpaths[vp_idx].fifo; |
| 2434 | irq_req = 1; |
| 2435 | break; |
| 2436 | case 1: |
| 2437 | snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN, |
Sreenivasa Honnur | b59c945 | 2010-03-28 22:11:41 +0000 | [diff] [blame] | 2438 | "%s:vxge:MSI-X %d - Rx - fn:%d vpath:%d", |
| 2439 | vdev->ndev->name, |
| 2440 | vdev->entries[intr_cnt].entry, |
| 2441 | pci_fun, vp_idx); |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 2442 | ret = request_irq( |
| 2443 | vdev->entries[intr_cnt].vector, |
| 2444 | vxge_rx_msix_napi_handle, |
| 2445 | 0, |
| 2446 | vdev->desc[intr_cnt], |
| 2447 | &vdev->vpaths[vp_idx].ring); |
| 2448 | vdev->vxge_entries[intr_cnt].arg = |
| 2449 | &vdev->vpaths[vp_idx].ring; |
| 2450 | irq_req = 1; |
| 2451 | break; |
| 2452 | } |
| 2453 | |
| 2454 | if (ret) { |
| 2455 | vxge_debug_init(VXGE_ERR, |
| 2456 | "%s: MSIX - %d Registration failed", |
| 2457 | vdev->ndev->name, intr_cnt); |
| 2458 | vxge_rem_msix_isr(vdev); |
Sreenivasa Honnur | eb5f10c | 2009-10-05 01:57:29 +0000 | [diff] [blame] | 2459 | vdev->config.intr_type = INTA; |
| 2460 | vxge_debug_init(VXGE_ERR, |
| 2461 | "%s: Defaulting to INTA" |
| 2462 | , vdev->ndev->name); |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 2463 | goto INTA_MODE; |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 2464 | } |
| 2465 | |
| 2466 | if (irq_req) { |
| 2467 | /* We requested for this msix interrupt */ |
| 2468 | vdev->vxge_entries[intr_cnt].in_use = 1; |
Sreenivasa Honnur | b59c945 | 2010-03-28 22:11:41 +0000 | [diff] [blame] | 2469 | msix_idx += vdev->vpaths[vp_idx].device_id * |
| 2470 | VXGE_HW_VPATH_MSIX_ACTIVE; |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 2471 | vxge_hw_vpath_msix_unmask( |
| 2472 | vdev->vpaths[vp_idx].handle, |
Sreenivasa Honnur | b59c945 | 2010-03-28 22:11:41 +0000 | [diff] [blame] | 2473 | msix_idx); |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 2474 | intr_cnt++; |
| 2475 | } |
| 2476 | |
| 2477 | /* Point to next vpath handler */ |
Joe Perches | 8e95a20 | 2009-12-03 07:58:21 +0000 | [diff] [blame] | 2478 | if (((intr_idx + 1) % VXGE_HW_VPATH_MSIX_ACTIVE == 0) && |
| 2479 | (vp_idx < (vdev->no_of_vpath - 1))) |
| 2480 | vp_idx++; |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 2481 | } |
| 2482 | |
Sreenivasa Honnur | b59c945 | 2010-03-28 22:11:41 +0000 | [diff] [blame] | 2483 | intr_cnt = vdev->no_of_vpath * 2; |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 2484 | snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN, |
Sreenivasa Honnur | b59c945 | 2010-03-28 22:11:41 +0000 | [diff] [blame] | 2485 | "%s:vxge:MSI-X %d - Alarm - fn:%d", |
| 2486 | vdev->ndev->name, |
| 2487 | vdev->entries[intr_cnt].entry, |
| 2488 | pci_fun); |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 2489 | /* For Alarm interrupts */ |
| 2490 | ret = request_irq(vdev->entries[intr_cnt].vector, |
| 2491 | vxge_alarm_msix_handle, 0, |
| 2492 | vdev->desc[intr_cnt], |
Sreenivasa Honnur | b59c945 | 2010-03-28 22:11:41 +0000 | [diff] [blame] | 2493 | &vdev->vpaths[0]); |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 2494 | if (ret) { |
| 2495 | vxge_debug_init(VXGE_ERR, |
| 2496 | "%s: MSIX - %d Registration failed", |
| 2497 | vdev->ndev->name, intr_cnt); |
| 2498 | vxge_rem_msix_isr(vdev); |
Sreenivasa Honnur | eb5f10c | 2009-10-05 01:57:29 +0000 | [diff] [blame] | 2499 | vdev->config.intr_type = INTA; |
| 2500 | vxge_debug_init(VXGE_ERR, |
| 2501 | "%s: Defaulting to INTA", |
| 2502 | vdev->ndev->name); |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 2503 | goto INTA_MODE; |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 2504 | } |
| 2505 | |
Sreenivasa Honnur | b59c945 | 2010-03-28 22:11:41 +0000 | [diff] [blame] | 2506 | msix_idx = (vdev->vpaths[0].handle->vpath->vp_id * |
| 2507 | VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID; |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 2508 | vxge_hw_vpath_msix_unmask(vdev->vpaths[vp_idx].handle, |
Sreenivasa Honnur | b59c945 | 2010-03-28 22:11:41 +0000 | [diff] [blame] | 2509 | msix_idx); |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 2510 | vdev->vxge_entries[intr_cnt].in_use = 1; |
Sreenivasa Honnur | b59c945 | 2010-03-28 22:11:41 +0000 | [diff] [blame] | 2511 | vdev->vxge_entries[intr_cnt].arg = &vdev->vpaths[0]; |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 2512 | } |
| 2513 | INTA_MODE: |
| 2514 | #endif |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 2515 | |
| 2516 | if (vdev->config.intr_type == INTA) { |
Sreenivasa Honnur | b59c945 | 2010-03-28 22:11:41 +0000 | [diff] [blame] | 2517 | snprintf(vdev->desc[0], VXGE_INTR_STRLEN, |
| 2518 | "%s:vxge:INTA", vdev->ndev->name); |
Sreenivasa Honnur | eb5f10c | 2009-10-05 01:57:29 +0000 | [diff] [blame] | 2519 | vxge_hw_device_set_intr_type(vdev->devh, |
| 2520 | VXGE_HW_INTR_MODE_IRQLINE); |
| 2521 | vxge_hw_vpath_tti_ci_set(vdev->devh, |
| 2522 | vdev->vpaths[0].device_id); |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 2523 | ret = request_irq((int) vdev->pdev->irq, |
| 2524 | vxge_isr_napi, |
Sreenivasa Honnur | a5d165b | 2009-07-01 21:16:37 +0000 | [diff] [blame] | 2525 | IRQF_SHARED, vdev->desc[0], vdev); |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 2526 | if (ret) { |
| 2527 | vxge_debug_init(VXGE_ERR, |
| 2528 | "%s %s-%d: ISR registration failed", |
| 2529 | VXGE_DRIVER_NAME, "IRQ", vdev->pdev->irq); |
| 2530 | return -ENODEV; |
| 2531 | } |
| 2532 | vxge_debug_init(VXGE_TRACE, |
| 2533 | "new %s-%d line allocated", |
| 2534 | "IRQ", vdev->pdev->irq); |
| 2535 | } |
| 2536 | |
| 2537 | return VXGE_HW_OK; |
| 2538 | } |
| 2539 | |
| 2540 | static void vxge_poll_vp_reset(unsigned long data) |
| 2541 | { |
| 2542 | struct vxgedev *vdev = (struct vxgedev *)data; |
| 2543 | int i, j = 0; |
| 2544 | |
| 2545 | for (i = 0; i < vdev->no_of_vpath; i++) { |
| 2546 | if (test_bit(i, &vdev->vp_reset)) { |
| 2547 | vxge_reset_vpath(vdev, i); |
| 2548 | j++; |
| 2549 | } |
| 2550 | } |
| 2551 | if (j && (vdev->config.intr_type != MSI_X)) { |
| 2552 | vxge_hw_device_unmask_all(vdev->devh); |
| 2553 | vxge_hw_device_flush_io(vdev->devh); |
| 2554 | } |
| 2555 | |
| 2556 | mod_timer(&vdev->vp_reset_timer, jiffies + HZ / 2); |
| 2557 | } |
| 2558 | |
| 2559 | static void vxge_poll_vp_lockup(unsigned long data) |
| 2560 | { |
| 2561 | struct vxgedev *vdev = (struct vxgedev *)data; |
| 2562 | int i; |
| 2563 | struct vxge_ring *ring; |
| 2564 | enum vxge_hw_status status = VXGE_HW_OK; |
| 2565 | |
| 2566 | for (i = 0; i < vdev->no_of_vpath; i++) { |
| 2567 | ring = &vdev->vpaths[i].ring; |
| 2568 | /* Did this vpath received any packets */ |
| 2569 | if (ring->stats.prev_rx_frms == ring->stats.rx_frms) { |
| 2570 | status = vxge_hw_vpath_check_leak(ring->handle); |
| 2571 | |
| 2572 | /* Did it received any packets last time */ |
| 2573 | if ((VXGE_HW_FAIL == status) && |
| 2574 | (VXGE_HW_FAIL == ring->last_status)) { |
| 2575 | |
| 2576 | /* schedule vpath reset */ |
| 2577 | if (!test_and_set_bit(i, &vdev->vp_reset)) { |
| 2578 | |
| 2579 | /* disable interrupts for this vpath */ |
| 2580 | vxge_vpath_intr_disable(vdev, i); |
| 2581 | |
| 2582 | /* stop the queue for this vpath */ |
| 2583 | vxge_stop_tx_queue(&vdev->vpaths[i]. |
| 2584 | fifo); |
| 2585 | continue; |
| 2586 | } |
| 2587 | } |
| 2588 | } |
| 2589 | ring->stats.prev_rx_frms = ring->stats.rx_frms; |
| 2590 | ring->last_status = status; |
| 2591 | } |
| 2592 | |
| 2593 | /* Check every 1 milli second */ |
| 2594 | mod_timer(&vdev->vp_lockup_timer, jiffies + HZ / 1000); |
| 2595 | } |
| 2596 | |
| 2597 | /** |
| 2598 | * vxge_open |
| 2599 | * @dev: pointer to the device structure. |
| 2600 | * |
| 2601 | * This function is the open entry point of the driver. It mainly calls a |
| 2602 | * function to allocate Rx buffers and inserts them into the buffer |
| 2603 | * descriptors and then enables the Rx part of the NIC. |
| 2604 | * Return value: '0' on success and an appropriate (-)ve integer as |
| 2605 | * defined in errno.h file on failure. |
| 2606 | */ |
| 2607 | int |
| 2608 | vxge_open(struct net_device *dev) |
| 2609 | { |
| 2610 | enum vxge_hw_status status; |
| 2611 | struct vxgedev *vdev; |
| 2612 | struct __vxge_hw_device *hldev; |
| 2613 | int ret = 0; |
| 2614 | int i; |
| 2615 | u64 val64, function_mode; |
| 2616 | vxge_debug_entryexit(VXGE_TRACE, |
| 2617 | "%s: %s:%d", dev->name, __func__, __LINE__); |
| 2618 | |
| 2619 | vdev = (struct vxgedev *)netdev_priv(dev); |
| 2620 | hldev = (struct __vxge_hw_device *) pci_get_drvdata(vdev->pdev); |
| 2621 | function_mode = vdev->config.device_hw_info.function_mode; |
| 2622 | |
| 2623 | /* make sure you have link off by default every time Nic is |
| 2624 | * initialized */ |
| 2625 | netif_carrier_off(dev); |
| 2626 | |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 2627 | /* Open VPATHs */ |
| 2628 | status = vxge_open_vpaths(vdev); |
| 2629 | if (status != VXGE_HW_OK) { |
| 2630 | vxge_debug_init(VXGE_ERR, |
| 2631 | "%s: fatal: Vpath open failed", vdev->ndev->name); |
| 2632 | ret = -EPERM; |
| 2633 | goto out0; |
| 2634 | } |
| 2635 | |
| 2636 | vdev->mtu = dev->mtu; |
| 2637 | |
| 2638 | status = vxge_add_isr(vdev); |
| 2639 | if (status != VXGE_HW_OK) { |
| 2640 | vxge_debug_init(VXGE_ERR, |
| 2641 | "%s: fatal: ISR add failed", dev->name); |
| 2642 | ret = -EPERM; |
| 2643 | goto out1; |
| 2644 | } |
| 2645 | |
| 2646 | |
| 2647 | if (vdev->config.intr_type != MSI_X) { |
| 2648 | netif_napi_add(dev, &vdev->napi, vxge_poll_inta, |
| 2649 | vdev->config.napi_weight); |
| 2650 | napi_enable(&vdev->napi); |
Sreenivasa Honnur | a5d165b | 2009-07-01 21:16:37 +0000 | [diff] [blame] | 2651 | for (i = 0; i < vdev->no_of_vpath; i++) |
| 2652 | vdev->vpaths[i].ring.napi_p = &vdev->napi; |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 2653 | } else { |
| 2654 | for (i = 0; i < vdev->no_of_vpath; i++) { |
| 2655 | netif_napi_add(dev, &vdev->vpaths[i].ring.napi, |
| 2656 | vxge_poll_msix, vdev->config.napi_weight); |
| 2657 | napi_enable(&vdev->vpaths[i].ring.napi); |
Sreenivasa Honnur | a5d165b | 2009-07-01 21:16:37 +0000 | [diff] [blame] | 2658 | vdev->vpaths[i].ring.napi_p = |
| 2659 | &vdev->vpaths[i].ring.napi; |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 2660 | } |
| 2661 | } |
| 2662 | |
| 2663 | /* configure RTH */ |
| 2664 | if (vdev->config.rth_steering) { |
| 2665 | status = vxge_rth_configure(vdev); |
| 2666 | if (status != VXGE_HW_OK) { |
| 2667 | vxge_debug_init(VXGE_ERR, |
| 2668 | "%s: fatal: RTH configuration failed", |
| 2669 | dev->name); |
| 2670 | ret = -EPERM; |
| 2671 | goto out2; |
| 2672 | } |
| 2673 | } |
| 2674 | |
| 2675 | for (i = 0; i < vdev->no_of_vpath; i++) { |
| 2676 | /* set initial mtu before enabling the device */ |
| 2677 | status = vxge_hw_vpath_mtu_set(vdev->vpaths[i].handle, |
| 2678 | vdev->mtu); |
| 2679 | if (status != VXGE_HW_OK) { |
| 2680 | vxge_debug_init(VXGE_ERR, |
| 2681 | "%s: fatal: can not set new MTU", dev->name); |
| 2682 | ret = -EPERM; |
| 2683 | goto out2; |
| 2684 | } |
| 2685 | } |
| 2686 | |
| 2687 | VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_TRACE, VXGE_COMPONENT_LL, vdev); |
| 2688 | vxge_debug_init(vdev->level_trace, |
| 2689 | "%s: MTU is %d", vdev->ndev->name, vdev->mtu); |
| 2690 | VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_ERR, VXGE_COMPONENT_LL, vdev); |
| 2691 | |
| 2692 | /* Reprogram the DA table with populated mac addresses */ |
| 2693 | for (i = 0; i < vdev->no_of_vpath; i++) { |
| 2694 | vxge_restore_vpath_mac_addr(&vdev->vpaths[i]); |
| 2695 | vxge_restore_vpath_vid_table(&vdev->vpaths[i]); |
| 2696 | } |
| 2697 | |
| 2698 | /* Enable vpath to sniff all unicast/multicast traffic that not |
| 2699 | * addressed to them. We allow promiscous mode for PF only |
| 2700 | */ |
| 2701 | |
| 2702 | val64 = 0; |
| 2703 | for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) |
| 2704 | val64 |= VXGE_HW_RXMAC_AUTHORIZE_ALL_ADDR_VP(i); |
| 2705 | |
| 2706 | vxge_hw_mgmt_reg_write(vdev->devh, |
| 2707 | vxge_hw_mgmt_reg_type_mrpcim, |
| 2708 | 0, |
| 2709 | (ulong)offsetof(struct vxge_hw_mrpcim_reg, |
| 2710 | rxmac_authorize_all_addr), |
| 2711 | val64); |
| 2712 | |
| 2713 | vxge_hw_mgmt_reg_write(vdev->devh, |
| 2714 | vxge_hw_mgmt_reg_type_mrpcim, |
| 2715 | 0, |
| 2716 | (ulong)offsetof(struct vxge_hw_mrpcim_reg, |
| 2717 | rxmac_authorize_all_vid), |
| 2718 | val64); |
| 2719 | |
| 2720 | vxge_set_multicast(dev); |
| 2721 | |
| 2722 | /* Enabling Bcast and mcast for all vpath */ |
| 2723 | for (i = 0; i < vdev->no_of_vpath; i++) { |
| 2724 | status = vxge_hw_vpath_bcast_enable(vdev->vpaths[i].handle); |
| 2725 | if (status != VXGE_HW_OK) |
| 2726 | vxge_debug_init(VXGE_ERR, |
| 2727 | "%s : Can not enable bcast for vpath " |
| 2728 | "id %d", dev->name, i); |
| 2729 | if (vdev->config.addr_learn_en) { |
| 2730 | status = |
| 2731 | vxge_hw_vpath_mcast_enable(vdev->vpaths[i].handle); |
| 2732 | if (status != VXGE_HW_OK) |
| 2733 | vxge_debug_init(VXGE_ERR, |
| 2734 | "%s : Can not enable mcast for vpath " |
| 2735 | "id %d", dev->name, i); |
| 2736 | } |
| 2737 | } |
| 2738 | |
| 2739 | vxge_hw_device_setpause_data(vdev->devh, 0, |
| 2740 | vdev->config.tx_pause_enable, |
| 2741 | vdev->config.rx_pause_enable); |
| 2742 | |
| 2743 | if (vdev->vp_reset_timer.function == NULL) |
| 2744 | vxge_os_timer(vdev->vp_reset_timer, |
| 2745 | vxge_poll_vp_reset, vdev, (HZ/2)); |
| 2746 | |
| 2747 | if (vdev->vp_lockup_timer.function == NULL) |
| 2748 | vxge_os_timer(vdev->vp_lockup_timer, |
| 2749 | vxge_poll_vp_lockup, vdev, (HZ/2)); |
| 2750 | |
| 2751 | set_bit(__VXGE_STATE_CARD_UP, &vdev->state); |
| 2752 | |
| 2753 | smp_wmb(); |
| 2754 | |
| 2755 | if (vxge_hw_device_link_state_get(vdev->devh) == VXGE_HW_LINK_UP) { |
| 2756 | netif_carrier_on(vdev->ndev); |
| 2757 | printk(KERN_NOTICE "%s: Link Up\n", vdev->ndev->name); |
| 2758 | vdev->stats.link_up++; |
| 2759 | } |
| 2760 | |
| 2761 | vxge_hw_device_intr_enable(vdev->devh); |
| 2762 | |
| 2763 | smp_wmb(); |
| 2764 | |
| 2765 | for (i = 0; i < vdev->no_of_vpath; i++) { |
| 2766 | vxge_hw_vpath_enable(vdev->vpaths[i].handle); |
| 2767 | smp_wmb(); |
| 2768 | vxge_hw_vpath_rx_doorbell_init(vdev->vpaths[i].handle); |
| 2769 | } |
| 2770 | |
| 2771 | vxge_start_all_tx_queue(vdev); |
| 2772 | goto out0; |
| 2773 | |
| 2774 | out2: |
| 2775 | vxge_rem_isr(vdev); |
| 2776 | |
| 2777 | /* Disable napi */ |
| 2778 | if (vdev->config.intr_type != MSI_X) |
| 2779 | napi_disable(&vdev->napi); |
| 2780 | else { |
| 2781 | for (i = 0; i < vdev->no_of_vpath; i++) |
| 2782 | napi_disable(&vdev->vpaths[i].ring.napi); |
| 2783 | } |
| 2784 | |
| 2785 | out1: |
| 2786 | vxge_close_vpaths(vdev, 0); |
| 2787 | out0: |
| 2788 | vxge_debug_entryexit(VXGE_TRACE, |
| 2789 | "%s: %s:%d Exiting...", |
| 2790 | dev->name, __func__, __LINE__); |
| 2791 | return ret; |
| 2792 | } |
| 2793 | |
| 2794 | /* Loop throught the mac address list and delete all the entries */ |
| 2795 | void vxge_free_mac_add_list(struct vxge_vpath *vpath) |
| 2796 | { |
| 2797 | |
| 2798 | struct list_head *entry, *next; |
| 2799 | if (list_empty(&vpath->mac_addr_list)) |
| 2800 | return; |
| 2801 | |
| 2802 | list_for_each_safe(entry, next, &vpath->mac_addr_list) { |
| 2803 | list_del(entry); |
| 2804 | kfree((struct vxge_mac_addrs *)entry); |
| 2805 | } |
| 2806 | } |
| 2807 | |
| 2808 | static void vxge_napi_del_all(struct vxgedev *vdev) |
| 2809 | { |
| 2810 | int i; |
| 2811 | if (vdev->config.intr_type != MSI_X) |
| 2812 | netif_napi_del(&vdev->napi); |
| 2813 | else { |
| 2814 | for (i = 0; i < vdev->no_of_vpath; i++) |
| 2815 | netif_napi_del(&vdev->vpaths[i].ring.napi); |
| 2816 | } |
| 2817 | return; |
| 2818 | } |
| 2819 | |
| 2820 | int do_vxge_close(struct net_device *dev, int do_io) |
| 2821 | { |
| 2822 | enum vxge_hw_status status; |
| 2823 | struct vxgedev *vdev; |
| 2824 | struct __vxge_hw_device *hldev; |
| 2825 | int i; |
| 2826 | u64 val64, vpath_vector; |
| 2827 | vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d", |
| 2828 | dev->name, __func__, __LINE__); |
| 2829 | |
| 2830 | vdev = (struct vxgedev *)netdev_priv(dev); |
| 2831 | hldev = (struct __vxge_hw_device *) pci_get_drvdata(vdev->pdev); |
| 2832 | |
Sreenivasa Honnur | bd9ee68 | 2009-07-01 21:14:03 +0000 | [diff] [blame] | 2833 | if (unlikely(!is_vxge_card_up(vdev))) |
| 2834 | return 0; |
| 2835 | |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 2836 | /* If vxge_handle_crit_err task is executing, |
| 2837 | * wait till it completes. */ |
| 2838 | while (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state)) |
| 2839 | msleep(50); |
| 2840 | |
| 2841 | clear_bit(__VXGE_STATE_CARD_UP, &vdev->state); |
| 2842 | if (do_io) { |
| 2843 | /* Put the vpath back in normal mode */ |
| 2844 | vpath_vector = vxge_mBIT(vdev->vpaths[0].device_id); |
| 2845 | status = vxge_hw_mgmt_reg_read(vdev->devh, |
| 2846 | vxge_hw_mgmt_reg_type_mrpcim, |
| 2847 | 0, |
| 2848 | (ulong)offsetof( |
| 2849 | struct vxge_hw_mrpcim_reg, |
| 2850 | rts_mgr_cbasin_cfg), |
| 2851 | &val64); |
| 2852 | |
| 2853 | if (status == VXGE_HW_OK) { |
| 2854 | val64 &= ~vpath_vector; |
| 2855 | status = vxge_hw_mgmt_reg_write(vdev->devh, |
| 2856 | vxge_hw_mgmt_reg_type_mrpcim, |
| 2857 | 0, |
| 2858 | (ulong)offsetof( |
| 2859 | struct vxge_hw_mrpcim_reg, |
| 2860 | rts_mgr_cbasin_cfg), |
| 2861 | val64); |
| 2862 | } |
| 2863 | |
| 2864 | /* Remove the function 0 from promiscous mode */ |
| 2865 | vxge_hw_mgmt_reg_write(vdev->devh, |
| 2866 | vxge_hw_mgmt_reg_type_mrpcim, |
| 2867 | 0, |
| 2868 | (ulong)offsetof(struct vxge_hw_mrpcim_reg, |
| 2869 | rxmac_authorize_all_addr), |
| 2870 | 0); |
| 2871 | |
| 2872 | vxge_hw_mgmt_reg_write(vdev->devh, |
| 2873 | vxge_hw_mgmt_reg_type_mrpcim, |
| 2874 | 0, |
| 2875 | (ulong)offsetof(struct vxge_hw_mrpcim_reg, |
| 2876 | rxmac_authorize_all_vid), |
| 2877 | 0); |
| 2878 | |
| 2879 | smp_wmb(); |
| 2880 | } |
| 2881 | del_timer_sync(&vdev->vp_lockup_timer); |
| 2882 | |
| 2883 | del_timer_sync(&vdev->vp_reset_timer); |
| 2884 | |
| 2885 | /* Disable napi */ |
| 2886 | if (vdev->config.intr_type != MSI_X) |
| 2887 | napi_disable(&vdev->napi); |
| 2888 | else { |
| 2889 | for (i = 0; i < vdev->no_of_vpath; i++) |
| 2890 | napi_disable(&vdev->vpaths[i].ring.napi); |
| 2891 | } |
| 2892 | |
| 2893 | netif_carrier_off(vdev->ndev); |
| 2894 | printk(KERN_NOTICE "%s: Link Down\n", vdev->ndev->name); |
| 2895 | vxge_stop_all_tx_queue(vdev); |
| 2896 | |
| 2897 | /* Note that at this point xmit() is stopped by upper layer */ |
| 2898 | if (do_io) |
| 2899 | vxge_hw_device_intr_disable(vdev->devh); |
| 2900 | |
| 2901 | mdelay(1000); |
| 2902 | |
| 2903 | vxge_rem_isr(vdev); |
| 2904 | |
| 2905 | vxge_napi_del_all(vdev); |
| 2906 | |
| 2907 | if (do_io) |
| 2908 | vxge_reset_all_vpaths(vdev); |
| 2909 | |
| 2910 | vxge_close_vpaths(vdev, 0); |
| 2911 | |
| 2912 | vxge_debug_entryexit(VXGE_TRACE, |
| 2913 | "%s: %s:%d Exiting...", dev->name, __func__, __LINE__); |
| 2914 | |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 2915 | clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state); |
| 2916 | |
| 2917 | return 0; |
| 2918 | } |
| 2919 | |
| 2920 | /** |
| 2921 | * vxge_close |
| 2922 | * @dev: device pointer. |
| 2923 | * |
| 2924 | * This is the stop entry point of the driver. It needs to undo exactly |
| 2925 | * whatever was done by the open entry point, thus it's usually referred to |
| 2926 | * as the close function.Among other things this function mainly stops the |
| 2927 | * Rx side of the NIC and frees all the Rx buffers in the Rx rings. |
| 2928 | * Return value: '0' on success and an appropriate (-)ve integer as |
| 2929 | * defined in errno.h file on failure. |
| 2930 | */ |
| 2931 | int |
| 2932 | vxge_close(struct net_device *dev) |
| 2933 | { |
| 2934 | do_vxge_close(dev, 1); |
| 2935 | return 0; |
| 2936 | } |
| 2937 | |
| 2938 | /** |
| 2939 | * vxge_change_mtu |
| 2940 | * @dev: net device pointer. |
| 2941 | * @new_mtu :the new MTU size for the device. |
| 2942 | * |
| 2943 | * A driver entry point to change MTU size for the device. Before changing |
| 2944 | * the MTU the device must be stopped. |
| 2945 | */ |
| 2946 | static int vxge_change_mtu(struct net_device *dev, int new_mtu) |
| 2947 | { |
| 2948 | struct vxgedev *vdev = netdev_priv(dev); |
| 2949 | |
| 2950 | vxge_debug_entryexit(vdev->level_trace, |
| 2951 | "%s:%d", __func__, __LINE__); |
| 2952 | if ((new_mtu < VXGE_HW_MIN_MTU) || (new_mtu > VXGE_HW_MAX_MTU)) { |
| 2953 | vxge_debug_init(vdev->level_err, |
| 2954 | "%s: mtu size is invalid", dev->name); |
| 2955 | return -EPERM; |
| 2956 | } |
| 2957 | |
| 2958 | /* check if device is down already */ |
| 2959 | if (unlikely(!is_vxge_card_up(vdev))) { |
| 2960 | /* just store new value, will use later on open() */ |
| 2961 | dev->mtu = new_mtu; |
| 2962 | vxge_debug_init(vdev->level_err, |
| 2963 | "%s", "device is down on MTU change"); |
| 2964 | return 0; |
| 2965 | } |
| 2966 | |
| 2967 | vxge_debug_init(vdev->level_trace, |
| 2968 | "trying to apply new MTU %d", new_mtu); |
| 2969 | |
| 2970 | if (vxge_close(dev)) |
| 2971 | return -EIO; |
| 2972 | |
| 2973 | dev->mtu = new_mtu; |
| 2974 | vdev->mtu = new_mtu; |
| 2975 | |
| 2976 | if (vxge_open(dev)) |
| 2977 | return -EIO; |
| 2978 | |
| 2979 | vxge_debug_init(vdev->level_trace, |
| 2980 | "%s: MTU changed to %d", vdev->ndev->name, new_mtu); |
| 2981 | |
| 2982 | vxge_debug_entryexit(vdev->level_trace, |
| 2983 | "%s:%d Exiting...", __func__, __LINE__); |
| 2984 | |
| 2985 | return 0; |
| 2986 | } |
| 2987 | |
| 2988 | /** |
| 2989 | * vxge_get_stats |
| 2990 | * @dev: pointer to the device structure |
| 2991 | * |
| 2992 | * Updates the device statistics structure. This function updates the device |
| 2993 | * statistics structure in the net_device structure and returns a pointer |
| 2994 | * to the same. |
| 2995 | */ |
| 2996 | static struct net_device_stats * |
| 2997 | vxge_get_stats(struct net_device *dev) |
| 2998 | { |
| 2999 | struct vxgedev *vdev; |
| 3000 | struct net_device_stats *net_stats; |
| 3001 | int k; |
| 3002 | |
| 3003 | vdev = netdev_priv(dev); |
| 3004 | |
| 3005 | net_stats = &vdev->stats.net_stats; |
| 3006 | |
| 3007 | memset(net_stats, 0, sizeof(struct net_device_stats)); |
| 3008 | |
| 3009 | for (k = 0; k < vdev->no_of_vpath; k++) { |
| 3010 | net_stats->rx_packets += vdev->vpaths[k].ring.stats.rx_frms; |
| 3011 | net_stats->rx_bytes += vdev->vpaths[k].ring.stats.rx_bytes; |
| 3012 | net_stats->rx_errors += vdev->vpaths[k].ring.stats.rx_errors; |
| 3013 | net_stats->multicast += vdev->vpaths[k].ring.stats.rx_mcast; |
| 3014 | net_stats->rx_dropped += |
| 3015 | vdev->vpaths[k].ring.stats.rx_dropped; |
| 3016 | |
| 3017 | net_stats->tx_packets += vdev->vpaths[k].fifo.stats.tx_frms; |
| 3018 | net_stats->tx_bytes += vdev->vpaths[k].fifo.stats.tx_bytes; |
| 3019 | net_stats->tx_errors += vdev->vpaths[k].fifo.stats.tx_errors; |
| 3020 | } |
| 3021 | |
| 3022 | return net_stats; |
| 3023 | } |
| 3024 | |
| 3025 | /** |
| 3026 | * vxge_ioctl |
| 3027 | * @dev: Device pointer. |
| 3028 | * @ifr: An IOCTL specific structure, that can contain a pointer to |
| 3029 | * a proprietary structure used to pass information to the driver. |
| 3030 | * @cmd: This is used to distinguish between the different commands that |
| 3031 | * can be passed to the IOCTL functions. |
| 3032 | * |
| 3033 | * Entry point for the Ioctl. |
| 3034 | */ |
| 3035 | static int vxge_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) |
| 3036 | { |
| 3037 | return -EOPNOTSUPP; |
| 3038 | } |
| 3039 | |
| 3040 | /** |
| 3041 | * vxge_tx_watchdog |
| 3042 | * @dev: pointer to net device structure |
| 3043 | * |
| 3044 | * Watchdog for transmit side. |
| 3045 | * This function is triggered if the Tx Queue is stopped |
| 3046 | * for a pre-defined amount of time when the Interface is still up. |
| 3047 | */ |
| 3048 | static void |
| 3049 | vxge_tx_watchdog(struct net_device *dev) |
| 3050 | { |
| 3051 | struct vxgedev *vdev; |
| 3052 | |
| 3053 | vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__); |
| 3054 | |
| 3055 | vdev = (struct vxgedev *)netdev_priv(dev); |
| 3056 | |
| 3057 | vdev->cric_err_event = VXGE_HW_EVENT_RESET_START; |
| 3058 | |
| 3059 | vxge_reset(vdev); |
| 3060 | vxge_debug_entryexit(VXGE_TRACE, |
| 3061 | "%s:%d Exiting...", __func__, __LINE__); |
| 3062 | } |
| 3063 | |
| 3064 | /** |
| 3065 | * vxge_vlan_rx_register |
| 3066 | * @dev: net device pointer. |
| 3067 | * @grp: vlan group |
| 3068 | * |
| 3069 | * Vlan group registration |
| 3070 | */ |
| 3071 | static void |
| 3072 | vxge_vlan_rx_register(struct net_device *dev, struct vlan_group *grp) |
| 3073 | { |
| 3074 | struct vxgedev *vdev; |
| 3075 | struct vxge_vpath *vpath; |
| 3076 | int vp; |
| 3077 | u64 vid; |
| 3078 | enum vxge_hw_status status; |
| 3079 | int i; |
| 3080 | |
| 3081 | vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__); |
| 3082 | |
| 3083 | vdev = (struct vxgedev *)netdev_priv(dev); |
| 3084 | |
| 3085 | vpath = &vdev->vpaths[0]; |
| 3086 | if ((NULL == grp) && (vpath->is_open)) { |
| 3087 | /* Get the first vlan */ |
| 3088 | status = vxge_hw_vpath_vid_get(vpath->handle, &vid); |
| 3089 | |
| 3090 | while (status == VXGE_HW_OK) { |
| 3091 | |
| 3092 | /* Delete this vlan from the vid table */ |
| 3093 | for (vp = 0; vp < vdev->no_of_vpath; vp++) { |
| 3094 | vpath = &vdev->vpaths[vp]; |
| 3095 | if (!vpath->is_open) |
| 3096 | continue; |
| 3097 | |
| 3098 | vxge_hw_vpath_vid_delete(vpath->handle, vid); |
| 3099 | } |
| 3100 | |
| 3101 | /* Get the next vlan to be deleted */ |
| 3102 | vpath = &vdev->vpaths[0]; |
| 3103 | status = vxge_hw_vpath_vid_get(vpath->handle, &vid); |
| 3104 | } |
| 3105 | } |
| 3106 | |
| 3107 | vdev->vlgrp = grp; |
| 3108 | |
| 3109 | for (i = 0; i < vdev->no_of_vpath; i++) { |
| 3110 | if (vdev->vpaths[i].is_configured) |
| 3111 | vdev->vpaths[i].ring.vlgrp = grp; |
| 3112 | } |
| 3113 | |
| 3114 | vxge_debug_entryexit(VXGE_TRACE, |
| 3115 | "%s:%d Exiting...", __func__, __LINE__); |
| 3116 | } |
| 3117 | |
| 3118 | /** |
| 3119 | * vxge_vlan_rx_add_vid |
| 3120 | * @dev: net device pointer. |
| 3121 | * @vid: vid |
| 3122 | * |
| 3123 | * Add the vlan id to the devices vlan id table |
| 3124 | */ |
| 3125 | static void |
| 3126 | vxge_vlan_rx_add_vid(struct net_device *dev, unsigned short vid) |
| 3127 | { |
| 3128 | struct vxgedev *vdev; |
| 3129 | struct vxge_vpath *vpath; |
| 3130 | int vp_id; |
| 3131 | |
| 3132 | vdev = (struct vxgedev *)netdev_priv(dev); |
| 3133 | |
| 3134 | /* Add these vlan to the vid table */ |
| 3135 | for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) { |
| 3136 | vpath = &vdev->vpaths[vp_id]; |
| 3137 | if (!vpath->is_open) |
| 3138 | continue; |
| 3139 | vxge_hw_vpath_vid_add(vpath->handle, vid); |
| 3140 | } |
| 3141 | } |
| 3142 | |
| 3143 | /** |
| 3144 | * vxge_vlan_rx_add_vid |
| 3145 | * @dev: net device pointer. |
| 3146 | * @vid: vid |
| 3147 | * |
| 3148 | * Remove the vlan id from the device's vlan id table |
| 3149 | */ |
| 3150 | static void |
| 3151 | vxge_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid) |
| 3152 | { |
| 3153 | struct vxgedev *vdev; |
| 3154 | struct vxge_vpath *vpath; |
| 3155 | int vp_id; |
| 3156 | |
| 3157 | vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__); |
| 3158 | |
| 3159 | vdev = (struct vxgedev *)netdev_priv(dev); |
| 3160 | |
| 3161 | vlan_group_set_device(vdev->vlgrp, vid, NULL); |
| 3162 | |
| 3163 | /* Delete this vlan from the vid table */ |
| 3164 | for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) { |
| 3165 | vpath = &vdev->vpaths[vp_id]; |
| 3166 | if (!vpath->is_open) |
| 3167 | continue; |
| 3168 | vxge_hw_vpath_vid_delete(vpath->handle, vid); |
| 3169 | } |
| 3170 | vxge_debug_entryexit(VXGE_TRACE, |
| 3171 | "%s:%d Exiting...", __func__, __LINE__); |
| 3172 | } |
| 3173 | |
| 3174 | static const struct net_device_ops vxge_netdev_ops = { |
| 3175 | .ndo_open = vxge_open, |
| 3176 | .ndo_stop = vxge_close, |
| 3177 | .ndo_get_stats = vxge_get_stats, |
| 3178 | .ndo_start_xmit = vxge_xmit, |
| 3179 | .ndo_validate_addr = eth_validate_addr, |
| 3180 | .ndo_set_multicast_list = vxge_set_multicast, |
| 3181 | |
| 3182 | .ndo_do_ioctl = vxge_ioctl, |
| 3183 | |
| 3184 | .ndo_set_mac_address = vxge_set_mac_addr, |
| 3185 | .ndo_change_mtu = vxge_change_mtu, |
| 3186 | .ndo_vlan_rx_register = vxge_vlan_rx_register, |
| 3187 | .ndo_vlan_rx_kill_vid = vxge_vlan_rx_kill_vid, |
| 3188 | .ndo_vlan_rx_add_vid = vxge_vlan_rx_add_vid, |
| 3189 | |
| 3190 | .ndo_tx_timeout = vxge_tx_watchdog, |
| 3191 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 3192 | .ndo_poll_controller = vxge_netpoll, |
| 3193 | #endif |
| 3194 | }; |
| 3195 | |
| 3196 | int __devinit vxge_device_register(struct __vxge_hw_device *hldev, |
| 3197 | struct vxge_config *config, |
| 3198 | int high_dma, int no_of_vpath, |
| 3199 | struct vxgedev **vdev_out) |
| 3200 | { |
| 3201 | struct net_device *ndev; |
| 3202 | enum vxge_hw_status status = VXGE_HW_OK; |
| 3203 | struct vxgedev *vdev; |
| 3204 | int i, ret = 0, no_of_queue = 1; |
| 3205 | u64 stat; |
| 3206 | |
| 3207 | *vdev_out = NULL; |
| 3208 | if (config->tx_steering_type == TX_MULTIQ_STEERING) |
| 3209 | no_of_queue = no_of_vpath; |
| 3210 | |
| 3211 | ndev = alloc_etherdev_mq(sizeof(struct vxgedev), |
| 3212 | no_of_queue); |
| 3213 | if (ndev == NULL) { |
| 3214 | vxge_debug_init( |
| 3215 | vxge_hw_device_trace_level_get(hldev), |
| 3216 | "%s : device allocation failed", __func__); |
| 3217 | ret = -ENODEV; |
| 3218 | goto _out0; |
| 3219 | } |
| 3220 | |
| 3221 | vxge_debug_entryexit( |
| 3222 | vxge_hw_device_trace_level_get(hldev), |
| 3223 | "%s: %s:%d Entering...", |
| 3224 | ndev->name, __func__, __LINE__); |
| 3225 | |
| 3226 | vdev = netdev_priv(ndev); |
| 3227 | memset(vdev, 0, sizeof(struct vxgedev)); |
| 3228 | |
| 3229 | vdev->ndev = ndev; |
| 3230 | vdev->devh = hldev; |
| 3231 | vdev->pdev = hldev->pdev; |
| 3232 | memcpy(&vdev->config, config, sizeof(struct vxge_config)); |
| 3233 | vdev->rx_csum = 1; /* Enable Rx CSUM by default. */ |
| 3234 | |
| 3235 | SET_NETDEV_DEV(ndev, &vdev->pdev->dev); |
| 3236 | |
| 3237 | ndev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX | |
| 3238 | NETIF_F_HW_VLAN_FILTER; |
| 3239 | /* Driver entry points */ |
| 3240 | ndev->irq = vdev->pdev->irq; |
| 3241 | ndev->base_addr = (unsigned long) hldev->bar0; |
| 3242 | |
| 3243 | ndev->netdev_ops = &vxge_netdev_ops; |
| 3244 | |
| 3245 | ndev->watchdog_timeo = VXGE_LL_WATCH_DOG_TIMEOUT; |
| 3246 | |
| 3247 | initialize_ethtool_ops(ndev); |
| 3248 | |
| 3249 | /* Allocate memory for vpath */ |
| 3250 | vdev->vpaths = kzalloc((sizeof(struct vxge_vpath)) * |
| 3251 | no_of_vpath, GFP_KERNEL); |
| 3252 | if (!vdev->vpaths) { |
| 3253 | vxge_debug_init(VXGE_ERR, |
| 3254 | "%s: vpath memory allocation failed", |
| 3255 | vdev->ndev->name); |
| 3256 | ret = -ENODEV; |
| 3257 | goto _out1; |
| 3258 | } |
| 3259 | |
| 3260 | ndev->features |= NETIF_F_SG; |
| 3261 | |
| 3262 | ndev->features |= NETIF_F_HW_CSUM; |
| 3263 | vxge_debug_init(vxge_hw_device_trace_level_get(hldev), |
| 3264 | "%s : checksuming enabled", __func__); |
| 3265 | |
| 3266 | if (high_dma) { |
| 3267 | ndev->features |= NETIF_F_HIGHDMA; |
| 3268 | vxge_debug_init(vxge_hw_device_trace_level_get(hldev), |
| 3269 | "%s : using High DMA", __func__); |
| 3270 | } |
| 3271 | |
| 3272 | ndev->features |= NETIF_F_TSO | NETIF_F_TSO6; |
| 3273 | |
| 3274 | if (vdev->config.gro_enable) |
| 3275 | ndev->features |= NETIF_F_GRO; |
| 3276 | |
| 3277 | if (vdev->config.tx_steering_type == TX_MULTIQ_STEERING) |
| 3278 | ndev->real_num_tx_queues = no_of_vpath; |
| 3279 | |
| 3280 | #ifdef NETIF_F_LLTX |
| 3281 | ndev->features |= NETIF_F_LLTX; |
| 3282 | #endif |
| 3283 | |
| 3284 | for (i = 0; i < no_of_vpath; i++) |
| 3285 | spin_lock_init(&vdev->vpaths[i].fifo.tx_lock); |
| 3286 | |
| 3287 | if (register_netdev(ndev)) { |
| 3288 | vxge_debug_init(vxge_hw_device_trace_level_get(hldev), |
| 3289 | "%s: %s : device registration failed!", |
| 3290 | ndev->name, __func__); |
| 3291 | ret = -ENODEV; |
| 3292 | goto _out2; |
| 3293 | } |
| 3294 | |
| 3295 | /* Set the factory defined MAC address initially */ |
| 3296 | ndev->addr_len = ETH_ALEN; |
| 3297 | |
| 3298 | /* Make Link state as off at this point, when the Link change |
| 3299 | * interrupt comes the state will be automatically changed to |
| 3300 | * the right state. |
| 3301 | */ |
| 3302 | netif_carrier_off(ndev); |
| 3303 | |
| 3304 | vxge_debug_init(vxge_hw_device_trace_level_get(hldev), |
| 3305 | "%s: Ethernet device registered", |
| 3306 | ndev->name); |
| 3307 | |
| 3308 | *vdev_out = vdev; |
| 3309 | |
| 3310 | /* Resetting the Device stats */ |
| 3311 | status = vxge_hw_mrpcim_stats_access( |
| 3312 | hldev, |
| 3313 | VXGE_HW_STATS_OP_CLEAR_ALL_STATS, |
| 3314 | 0, |
| 3315 | 0, |
| 3316 | &stat); |
| 3317 | |
| 3318 | if (status == VXGE_HW_ERR_PRIVILAGED_OPEARATION) |
| 3319 | vxge_debug_init( |
| 3320 | vxge_hw_device_trace_level_get(hldev), |
| 3321 | "%s: device stats clear returns" |
| 3322 | "VXGE_HW_ERR_PRIVILAGED_OPEARATION", ndev->name); |
| 3323 | |
| 3324 | vxge_debug_entryexit(vxge_hw_device_trace_level_get(hldev), |
| 3325 | "%s: %s:%d Exiting...", |
| 3326 | ndev->name, __func__, __LINE__); |
| 3327 | |
| 3328 | return ret; |
| 3329 | _out2: |
| 3330 | kfree(vdev->vpaths); |
| 3331 | _out1: |
| 3332 | free_netdev(ndev); |
| 3333 | _out0: |
| 3334 | return ret; |
| 3335 | } |
| 3336 | |
| 3337 | /* |
| 3338 | * vxge_device_unregister |
| 3339 | * |
| 3340 | * This function will unregister and free network device |
| 3341 | */ |
| 3342 | void |
| 3343 | vxge_device_unregister(struct __vxge_hw_device *hldev) |
| 3344 | { |
| 3345 | struct vxgedev *vdev; |
| 3346 | struct net_device *dev; |
| 3347 | char buf[IFNAMSIZ]; |
| 3348 | #if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \ |
| 3349 | (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK)) |
| 3350 | u32 level_trace; |
| 3351 | #endif |
| 3352 | |
| 3353 | dev = hldev->ndev; |
| 3354 | vdev = netdev_priv(dev); |
| 3355 | #if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \ |
| 3356 | (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK)) |
| 3357 | level_trace = vdev->level_trace; |
| 3358 | #endif |
| 3359 | vxge_debug_entryexit(level_trace, |
| 3360 | "%s: %s:%d", vdev->ndev->name, __func__, __LINE__); |
| 3361 | |
| 3362 | memcpy(buf, vdev->ndev->name, IFNAMSIZ); |
| 3363 | |
| 3364 | /* in 2.6 will call stop() if device is up */ |
| 3365 | unregister_netdev(dev); |
| 3366 | |
| 3367 | flush_scheduled_work(); |
| 3368 | |
| 3369 | vxge_debug_init(level_trace, "%s: ethernet device unregistered", buf); |
| 3370 | vxge_debug_entryexit(level_trace, |
| 3371 | "%s: %s:%d Exiting...", buf, __func__, __LINE__); |
| 3372 | } |
| 3373 | |
| 3374 | /* |
| 3375 | * vxge_callback_crit_err |
| 3376 | * |
| 3377 | * This function is called by the alarm handler in interrupt context. |
| 3378 | * Driver must analyze it based on the event type. |
| 3379 | */ |
| 3380 | static void |
| 3381 | vxge_callback_crit_err(struct __vxge_hw_device *hldev, |
| 3382 | enum vxge_hw_event type, u64 vp_id) |
| 3383 | { |
| 3384 | struct net_device *dev = hldev->ndev; |
| 3385 | struct vxgedev *vdev = (struct vxgedev *)netdev_priv(dev); |
| 3386 | int vpath_idx; |
| 3387 | |
| 3388 | vxge_debug_entryexit(vdev->level_trace, |
| 3389 | "%s: %s:%d", vdev->ndev->name, __func__, __LINE__); |
| 3390 | |
| 3391 | /* Note: This event type should be used for device wide |
| 3392 | * indications only - Serious errors, Slot freeze and critical errors |
| 3393 | */ |
| 3394 | vdev->cric_err_event = type; |
| 3395 | |
| 3396 | for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) |
| 3397 | if (vdev->vpaths[vpath_idx].device_id == vp_id) |
| 3398 | break; |
| 3399 | |
| 3400 | if (!test_bit(__VXGE_STATE_RESET_CARD, &vdev->state)) { |
| 3401 | if (type == VXGE_HW_EVENT_SLOT_FREEZE) { |
| 3402 | vxge_debug_init(VXGE_ERR, |
| 3403 | "%s: Slot is frozen", vdev->ndev->name); |
| 3404 | } else if (type == VXGE_HW_EVENT_SERR) { |
| 3405 | vxge_debug_init(VXGE_ERR, |
| 3406 | "%s: Encountered Serious Error", |
| 3407 | vdev->ndev->name); |
| 3408 | } else if (type == VXGE_HW_EVENT_CRITICAL_ERR) |
| 3409 | vxge_debug_init(VXGE_ERR, |
| 3410 | "%s: Encountered Critical Error", |
| 3411 | vdev->ndev->name); |
| 3412 | } |
| 3413 | |
| 3414 | if ((type == VXGE_HW_EVENT_SERR) || |
| 3415 | (type == VXGE_HW_EVENT_SLOT_FREEZE)) { |
| 3416 | if (unlikely(vdev->exec_mode)) |
| 3417 | clear_bit(__VXGE_STATE_CARD_UP, &vdev->state); |
| 3418 | } else if (type == VXGE_HW_EVENT_CRITICAL_ERR) { |
| 3419 | vxge_hw_device_mask_all(hldev); |
| 3420 | if (unlikely(vdev->exec_mode)) |
| 3421 | clear_bit(__VXGE_STATE_CARD_UP, &vdev->state); |
| 3422 | } else if ((type == VXGE_HW_EVENT_FIFO_ERR) || |
| 3423 | (type == VXGE_HW_EVENT_VPATH_ERR)) { |
| 3424 | |
| 3425 | if (unlikely(vdev->exec_mode)) |
| 3426 | clear_bit(__VXGE_STATE_CARD_UP, &vdev->state); |
| 3427 | else { |
| 3428 | /* check if this vpath is already set for reset */ |
| 3429 | if (!test_and_set_bit(vpath_idx, &vdev->vp_reset)) { |
| 3430 | |
| 3431 | /* disable interrupts for this vpath */ |
| 3432 | vxge_vpath_intr_disable(vdev, vpath_idx); |
| 3433 | |
| 3434 | /* stop the queue for this vpath */ |
| 3435 | vxge_stop_tx_queue(&vdev->vpaths[vpath_idx]. |
| 3436 | fifo); |
| 3437 | } |
| 3438 | } |
| 3439 | } |
| 3440 | |
| 3441 | vxge_debug_entryexit(vdev->level_trace, |
| 3442 | "%s: %s:%d Exiting...", |
| 3443 | vdev->ndev->name, __func__, __LINE__); |
| 3444 | } |
| 3445 | |
| 3446 | static void verify_bandwidth(void) |
| 3447 | { |
| 3448 | int i, band_width, total = 0, equal_priority = 0; |
| 3449 | |
| 3450 | /* 1. If user enters 0 for some fifo, give equal priority to all */ |
| 3451 | for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) { |
| 3452 | if (bw_percentage[i] == 0) { |
| 3453 | equal_priority = 1; |
| 3454 | break; |
| 3455 | } |
| 3456 | } |
| 3457 | |
| 3458 | if (!equal_priority) { |
| 3459 | /* 2. If sum exceeds 100, give equal priority to all */ |
| 3460 | for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) { |
| 3461 | if (bw_percentage[i] == 0xFF) |
| 3462 | break; |
| 3463 | |
| 3464 | total += bw_percentage[i]; |
| 3465 | if (total > VXGE_HW_VPATH_BANDWIDTH_MAX) { |
| 3466 | equal_priority = 1; |
| 3467 | break; |
| 3468 | } |
| 3469 | } |
| 3470 | } |
| 3471 | |
| 3472 | if (!equal_priority) { |
| 3473 | /* Is all the bandwidth consumed? */ |
| 3474 | if (total < VXGE_HW_VPATH_BANDWIDTH_MAX) { |
| 3475 | if (i < VXGE_HW_MAX_VIRTUAL_PATHS) { |
| 3476 | /* Split rest of bw equally among next VPs*/ |
| 3477 | band_width = |
| 3478 | (VXGE_HW_VPATH_BANDWIDTH_MAX - total) / |
| 3479 | (VXGE_HW_MAX_VIRTUAL_PATHS - i); |
| 3480 | if (band_width < 2) /* min of 2% */ |
| 3481 | equal_priority = 1; |
| 3482 | else { |
| 3483 | for (; i < VXGE_HW_MAX_VIRTUAL_PATHS; |
| 3484 | i++) |
| 3485 | bw_percentage[i] = |
| 3486 | band_width; |
| 3487 | } |
| 3488 | } |
| 3489 | } else if (i < VXGE_HW_MAX_VIRTUAL_PATHS) |
| 3490 | equal_priority = 1; |
| 3491 | } |
| 3492 | |
| 3493 | if (equal_priority) { |
| 3494 | vxge_debug_init(VXGE_ERR, |
| 3495 | "%s: Assigning equal bandwidth to all the vpaths", |
| 3496 | VXGE_DRIVER_NAME); |
| 3497 | bw_percentage[0] = VXGE_HW_VPATH_BANDWIDTH_MAX / |
| 3498 | VXGE_HW_MAX_VIRTUAL_PATHS; |
| 3499 | for (i = 1; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) |
| 3500 | bw_percentage[i] = bw_percentage[0]; |
| 3501 | } |
| 3502 | |
| 3503 | return; |
| 3504 | } |
| 3505 | |
| 3506 | /* |
| 3507 | * Vpath configuration |
| 3508 | */ |
| 3509 | static int __devinit vxge_config_vpaths( |
| 3510 | struct vxge_hw_device_config *device_config, |
| 3511 | u64 vpath_mask, struct vxge_config *config_param) |
| 3512 | { |
| 3513 | int i, no_of_vpaths = 0, default_no_vpath = 0, temp; |
| 3514 | u32 txdl_size, txdl_per_memblock; |
| 3515 | |
| 3516 | temp = driver_config->vpath_per_dev; |
| 3517 | if ((driver_config->vpath_per_dev == VXGE_USE_DEFAULT) && |
| 3518 | (max_config_dev == VXGE_MAX_CONFIG_DEV)) { |
| 3519 | /* No more CPU. Return vpath number as zero.*/ |
| 3520 | if (driver_config->g_no_cpus == -1) |
| 3521 | return 0; |
| 3522 | |
| 3523 | if (!driver_config->g_no_cpus) |
| 3524 | driver_config->g_no_cpus = num_online_cpus(); |
| 3525 | |
| 3526 | driver_config->vpath_per_dev = driver_config->g_no_cpus >> 1; |
| 3527 | if (!driver_config->vpath_per_dev) |
| 3528 | driver_config->vpath_per_dev = 1; |
| 3529 | |
| 3530 | for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) |
| 3531 | if (!vxge_bVALn(vpath_mask, i, 1)) |
| 3532 | continue; |
| 3533 | else |
| 3534 | default_no_vpath++; |
| 3535 | if (default_no_vpath < driver_config->vpath_per_dev) |
| 3536 | driver_config->vpath_per_dev = default_no_vpath; |
| 3537 | |
| 3538 | driver_config->g_no_cpus = driver_config->g_no_cpus - |
| 3539 | (driver_config->vpath_per_dev * 2); |
| 3540 | if (driver_config->g_no_cpus <= 0) |
| 3541 | driver_config->g_no_cpus = -1; |
| 3542 | } |
| 3543 | |
| 3544 | if (driver_config->vpath_per_dev == 1) { |
| 3545 | vxge_debug_ll_config(VXGE_TRACE, |
| 3546 | "%s: Disable tx and rx steering, " |
| 3547 | "as single vpath is configured", VXGE_DRIVER_NAME); |
| 3548 | config_param->rth_steering = NO_STEERING; |
| 3549 | config_param->tx_steering_type = NO_STEERING; |
| 3550 | device_config->rth_en = 0; |
| 3551 | } |
| 3552 | |
| 3553 | /* configure bandwidth */ |
| 3554 | for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) |
| 3555 | device_config->vp_config[i].min_bandwidth = bw_percentage[i]; |
| 3556 | |
| 3557 | for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) { |
| 3558 | device_config->vp_config[i].vp_id = i; |
| 3559 | device_config->vp_config[i].mtu = VXGE_HW_DEFAULT_MTU; |
| 3560 | if (no_of_vpaths < driver_config->vpath_per_dev) { |
| 3561 | if (!vxge_bVALn(vpath_mask, i, 1)) { |
| 3562 | vxge_debug_ll_config(VXGE_TRACE, |
| 3563 | "%s: vpath: %d is not available", |
| 3564 | VXGE_DRIVER_NAME, i); |
| 3565 | continue; |
| 3566 | } else { |
| 3567 | vxge_debug_ll_config(VXGE_TRACE, |
| 3568 | "%s: vpath: %d available", |
| 3569 | VXGE_DRIVER_NAME, i); |
| 3570 | no_of_vpaths++; |
| 3571 | } |
| 3572 | } else { |
| 3573 | vxge_debug_ll_config(VXGE_TRACE, |
| 3574 | "%s: vpath: %d is not configured, " |
| 3575 | "max_config_vpath exceeded", |
| 3576 | VXGE_DRIVER_NAME, i); |
| 3577 | break; |
| 3578 | } |
| 3579 | |
| 3580 | /* Configure Tx fifo's */ |
| 3581 | device_config->vp_config[i].fifo.enable = |
| 3582 | VXGE_HW_FIFO_ENABLE; |
| 3583 | device_config->vp_config[i].fifo.max_frags = |
Sreenivasa Honnur | 5beefb4 | 2009-10-28 02:46:54 -0700 | [diff] [blame] | 3584 | MAX_SKB_FRAGS + 1; |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 3585 | device_config->vp_config[i].fifo.memblock_size = |
| 3586 | VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE; |
| 3587 | |
Sreenivasa Honnur | 5beefb4 | 2009-10-28 02:46:54 -0700 | [diff] [blame] | 3588 | txdl_size = device_config->vp_config[i].fifo.max_frags * |
| 3589 | sizeof(struct vxge_hw_fifo_txd); |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 3590 | txdl_per_memblock = VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE / txdl_size; |
| 3591 | |
| 3592 | device_config->vp_config[i].fifo.fifo_blocks = |
| 3593 | ((VXGE_DEF_FIFO_LENGTH - 1) / txdl_per_memblock) + 1; |
| 3594 | |
| 3595 | device_config->vp_config[i].fifo.intr = |
| 3596 | VXGE_HW_FIFO_QUEUE_INTR_DISABLE; |
| 3597 | |
| 3598 | /* Configure tti properties */ |
| 3599 | device_config->vp_config[i].tti.intr_enable = |
| 3600 | VXGE_HW_TIM_INTR_ENABLE; |
| 3601 | |
| 3602 | device_config->vp_config[i].tti.btimer_val = |
| 3603 | (VXGE_TTI_BTIMER_VAL * 1000) / 272; |
| 3604 | |
| 3605 | device_config->vp_config[i].tti.timer_ac_en = |
| 3606 | VXGE_HW_TIM_TIMER_AC_ENABLE; |
| 3607 | |
| 3608 | /* For msi-x with napi (each vector |
| 3609 | has a handler of its own) - |
| 3610 | Set CI to OFF for all vpaths */ |
| 3611 | device_config->vp_config[i].tti.timer_ci_en = |
| 3612 | VXGE_HW_TIM_TIMER_CI_DISABLE; |
| 3613 | |
| 3614 | device_config->vp_config[i].tti.timer_ri_en = |
| 3615 | VXGE_HW_TIM_TIMER_RI_DISABLE; |
| 3616 | |
| 3617 | device_config->vp_config[i].tti.util_sel = |
| 3618 | VXGE_HW_TIM_UTIL_SEL_LEGACY_TX_NET_UTIL; |
| 3619 | |
| 3620 | device_config->vp_config[i].tti.ltimer_val = |
| 3621 | (VXGE_TTI_LTIMER_VAL * 1000) / 272; |
| 3622 | |
| 3623 | device_config->vp_config[i].tti.rtimer_val = |
| 3624 | (VXGE_TTI_RTIMER_VAL * 1000) / 272; |
| 3625 | |
| 3626 | device_config->vp_config[i].tti.urange_a = TTI_TX_URANGE_A; |
| 3627 | device_config->vp_config[i].tti.urange_b = TTI_TX_URANGE_B; |
| 3628 | device_config->vp_config[i].tti.urange_c = TTI_TX_URANGE_C; |
| 3629 | device_config->vp_config[i].tti.uec_a = TTI_TX_UFC_A; |
| 3630 | device_config->vp_config[i].tti.uec_b = TTI_TX_UFC_B; |
| 3631 | device_config->vp_config[i].tti.uec_c = TTI_TX_UFC_C; |
| 3632 | device_config->vp_config[i].tti.uec_d = TTI_TX_UFC_D; |
| 3633 | |
| 3634 | /* Configure Rx rings */ |
| 3635 | device_config->vp_config[i].ring.enable = |
| 3636 | VXGE_HW_RING_ENABLE; |
| 3637 | |
| 3638 | device_config->vp_config[i].ring.ring_blocks = |
| 3639 | VXGE_HW_DEF_RING_BLOCKS; |
| 3640 | device_config->vp_config[i].ring.buffer_mode = |
| 3641 | VXGE_HW_RING_RXD_BUFFER_MODE_1; |
| 3642 | device_config->vp_config[i].ring.rxds_limit = |
| 3643 | VXGE_HW_DEF_RING_RXDS_LIMIT; |
| 3644 | device_config->vp_config[i].ring.scatter_mode = |
| 3645 | VXGE_HW_RING_SCATTER_MODE_A; |
| 3646 | |
| 3647 | /* Configure rti properties */ |
| 3648 | device_config->vp_config[i].rti.intr_enable = |
| 3649 | VXGE_HW_TIM_INTR_ENABLE; |
| 3650 | |
| 3651 | device_config->vp_config[i].rti.btimer_val = |
| 3652 | (VXGE_RTI_BTIMER_VAL * 1000)/272; |
| 3653 | |
| 3654 | device_config->vp_config[i].rti.timer_ac_en = |
| 3655 | VXGE_HW_TIM_TIMER_AC_ENABLE; |
| 3656 | |
| 3657 | device_config->vp_config[i].rti.timer_ci_en = |
| 3658 | VXGE_HW_TIM_TIMER_CI_DISABLE; |
| 3659 | |
| 3660 | device_config->vp_config[i].rti.timer_ri_en = |
| 3661 | VXGE_HW_TIM_TIMER_RI_DISABLE; |
| 3662 | |
| 3663 | device_config->vp_config[i].rti.util_sel = |
| 3664 | VXGE_HW_TIM_UTIL_SEL_LEGACY_RX_NET_UTIL; |
| 3665 | |
| 3666 | device_config->vp_config[i].rti.urange_a = |
| 3667 | RTI_RX_URANGE_A; |
| 3668 | device_config->vp_config[i].rti.urange_b = |
| 3669 | RTI_RX_URANGE_B; |
| 3670 | device_config->vp_config[i].rti.urange_c = |
| 3671 | RTI_RX_URANGE_C; |
| 3672 | device_config->vp_config[i].rti.uec_a = RTI_RX_UFC_A; |
| 3673 | device_config->vp_config[i].rti.uec_b = RTI_RX_UFC_B; |
| 3674 | device_config->vp_config[i].rti.uec_c = RTI_RX_UFC_C; |
| 3675 | device_config->vp_config[i].rti.uec_d = RTI_RX_UFC_D; |
| 3676 | |
| 3677 | device_config->vp_config[i].rti.rtimer_val = |
| 3678 | (VXGE_RTI_RTIMER_VAL * 1000) / 272; |
| 3679 | |
| 3680 | device_config->vp_config[i].rti.ltimer_val = |
| 3681 | (VXGE_RTI_LTIMER_VAL * 1000) / 272; |
| 3682 | |
| 3683 | device_config->vp_config[i].rpa_strip_vlan_tag = |
| 3684 | vlan_tag_strip; |
| 3685 | } |
| 3686 | |
| 3687 | driver_config->vpath_per_dev = temp; |
| 3688 | return no_of_vpaths; |
| 3689 | } |
| 3690 | |
| 3691 | /* initialize device configuratrions */ |
| 3692 | static void __devinit vxge_device_config_init( |
| 3693 | struct vxge_hw_device_config *device_config, |
| 3694 | int *intr_type) |
| 3695 | { |
| 3696 | /* Used for CQRQ/SRQ. */ |
| 3697 | device_config->dma_blockpool_initial = |
| 3698 | VXGE_HW_INITIAL_DMA_BLOCK_POOL_SIZE; |
| 3699 | |
| 3700 | device_config->dma_blockpool_max = |
| 3701 | VXGE_HW_MAX_DMA_BLOCK_POOL_SIZE; |
| 3702 | |
| 3703 | if (max_mac_vpath > VXGE_MAX_MAC_ADDR_COUNT) |
| 3704 | max_mac_vpath = VXGE_MAX_MAC_ADDR_COUNT; |
| 3705 | |
| 3706 | #ifndef CONFIG_PCI_MSI |
| 3707 | vxge_debug_init(VXGE_ERR, |
| 3708 | "%s: This Kernel does not support " |
| 3709 | "MSI-X. Defaulting to INTA", VXGE_DRIVER_NAME); |
| 3710 | *intr_type = INTA; |
| 3711 | #endif |
| 3712 | |
| 3713 | /* Configure whether MSI-X or IRQL. */ |
| 3714 | switch (*intr_type) { |
| 3715 | case INTA: |
| 3716 | device_config->intr_mode = VXGE_HW_INTR_MODE_IRQLINE; |
| 3717 | break; |
| 3718 | |
| 3719 | case MSI_X: |
| 3720 | device_config->intr_mode = VXGE_HW_INTR_MODE_MSIX; |
| 3721 | break; |
| 3722 | } |
| 3723 | /* Timer period between device poll */ |
| 3724 | device_config->device_poll_millis = VXGE_TIMER_DELAY; |
| 3725 | |
| 3726 | /* Configure mac based steering. */ |
| 3727 | device_config->rts_mac_en = addr_learn_en; |
| 3728 | |
| 3729 | /* Configure Vpaths */ |
| 3730 | device_config->rth_it_type = VXGE_HW_RTH_IT_TYPE_MULTI_IT; |
| 3731 | |
| 3732 | vxge_debug_ll_config(VXGE_TRACE, "%s : Device Config Params ", |
| 3733 | __func__); |
| 3734 | vxge_debug_ll_config(VXGE_TRACE, "dma_blockpool_initial : %d", |
| 3735 | device_config->dma_blockpool_initial); |
| 3736 | vxge_debug_ll_config(VXGE_TRACE, "dma_blockpool_max : %d", |
| 3737 | device_config->dma_blockpool_max); |
| 3738 | vxge_debug_ll_config(VXGE_TRACE, "intr_mode : %d", |
| 3739 | device_config->intr_mode); |
| 3740 | vxge_debug_ll_config(VXGE_TRACE, "device_poll_millis : %d", |
| 3741 | device_config->device_poll_millis); |
| 3742 | vxge_debug_ll_config(VXGE_TRACE, "rts_mac_en : %d", |
| 3743 | device_config->rts_mac_en); |
| 3744 | vxge_debug_ll_config(VXGE_TRACE, "rth_en : %d", |
| 3745 | device_config->rth_en); |
| 3746 | vxge_debug_ll_config(VXGE_TRACE, "rth_it_type : %d", |
| 3747 | device_config->rth_it_type); |
| 3748 | } |
| 3749 | |
| 3750 | static void __devinit vxge_print_parm(struct vxgedev *vdev, u64 vpath_mask) |
| 3751 | { |
| 3752 | int i; |
| 3753 | |
| 3754 | vxge_debug_init(VXGE_TRACE, |
| 3755 | "%s: %d Vpath(s) opened", |
| 3756 | vdev->ndev->name, vdev->no_of_vpath); |
| 3757 | |
| 3758 | switch (vdev->config.intr_type) { |
| 3759 | case INTA: |
| 3760 | vxge_debug_init(VXGE_TRACE, |
| 3761 | "%s: Interrupt type INTA", vdev->ndev->name); |
| 3762 | break; |
| 3763 | |
| 3764 | case MSI_X: |
| 3765 | vxge_debug_init(VXGE_TRACE, |
| 3766 | "%s: Interrupt type MSI-X", vdev->ndev->name); |
| 3767 | break; |
| 3768 | } |
| 3769 | |
| 3770 | if (vdev->config.rth_steering) { |
| 3771 | vxge_debug_init(VXGE_TRACE, |
| 3772 | "%s: RTH steering enabled for TCP_IPV4", |
| 3773 | vdev->ndev->name); |
| 3774 | } else { |
| 3775 | vxge_debug_init(VXGE_TRACE, |
| 3776 | "%s: RTH steering disabled", vdev->ndev->name); |
| 3777 | } |
| 3778 | |
| 3779 | switch (vdev->config.tx_steering_type) { |
| 3780 | case NO_STEERING: |
| 3781 | vxge_debug_init(VXGE_TRACE, |
| 3782 | "%s: Tx steering disabled", vdev->ndev->name); |
| 3783 | break; |
| 3784 | case TX_PRIORITY_STEERING: |
| 3785 | vxge_debug_init(VXGE_TRACE, |
| 3786 | "%s: Unsupported tx steering option", |
| 3787 | vdev->ndev->name); |
| 3788 | vxge_debug_init(VXGE_TRACE, |
| 3789 | "%s: Tx steering disabled", vdev->ndev->name); |
| 3790 | vdev->config.tx_steering_type = 0; |
| 3791 | break; |
| 3792 | case TX_VLAN_STEERING: |
| 3793 | vxge_debug_init(VXGE_TRACE, |
| 3794 | "%s: Unsupported tx steering option", |
| 3795 | vdev->ndev->name); |
| 3796 | vxge_debug_init(VXGE_TRACE, |
| 3797 | "%s: Tx steering disabled", vdev->ndev->name); |
| 3798 | vdev->config.tx_steering_type = 0; |
| 3799 | break; |
| 3800 | case TX_MULTIQ_STEERING: |
| 3801 | vxge_debug_init(VXGE_TRACE, |
| 3802 | "%s: Tx multiqueue steering enabled", |
| 3803 | vdev->ndev->name); |
| 3804 | break; |
| 3805 | case TX_PORT_STEERING: |
| 3806 | vxge_debug_init(VXGE_TRACE, |
| 3807 | "%s: Tx port steering enabled", |
| 3808 | vdev->ndev->name); |
| 3809 | break; |
| 3810 | default: |
| 3811 | vxge_debug_init(VXGE_ERR, |
| 3812 | "%s: Unsupported tx steering type", |
| 3813 | vdev->ndev->name); |
| 3814 | vxge_debug_init(VXGE_TRACE, |
| 3815 | "%s: Tx steering disabled", vdev->ndev->name); |
| 3816 | vdev->config.tx_steering_type = 0; |
| 3817 | } |
| 3818 | |
| 3819 | if (vdev->config.gro_enable) { |
| 3820 | vxge_debug_init(VXGE_ERR, |
| 3821 | "%s: Generic receive offload enabled", |
| 3822 | vdev->ndev->name); |
| 3823 | } else |
| 3824 | vxge_debug_init(VXGE_TRACE, |
| 3825 | "%s: Generic receive offload disabled", |
| 3826 | vdev->ndev->name); |
| 3827 | |
| 3828 | if (vdev->config.addr_learn_en) |
| 3829 | vxge_debug_init(VXGE_TRACE, |
| 3830 | "%s: MAC Address learning enabled", vdev->ndev->name); |
| 3831 | |
| 3832 | vxge_debug_init(VXGE_TRACE, |
| 3833 | "%s: Rx doorbell mode enabled", vdev->ndev->name); |
| 3834 | |
| 3835 | for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) { |
| 3836 | if (!vxge_bVALn(vpath_mask, i, 1)) |
| 3837 | continue; |
| 3838 | vxge_debug_ll_config(VXGE_TRACE, |
| 3839 | "%s: MTU size - %d", vdev->ndev->name, |
| 3840 | ((struct __vxge_hw_device *)(vdev->devh))-> |
| 3841 | config.vp_config[i].mtu); |
| 3842 | vxge_debug_init(VXGE_TRACE, |
| 3843 | "%s: VLAN tag stripping %s", vdev->ndev->name, |
| 3844 | ((struct __vxge_hw_device *)(vdev->devh))-> |
| 3845 | config.vp_config[i].rpa_strip_vlan_tag |
| 3846 | ? "Enabled" : "Disabled"); |
| 3847 | vxge_debug_init(VXGE_TRACE, |
| 3848 | "%s: Ring blocks : %d", vdev->ndev->name, |
| 3849 | ((struct __vxge_hw_device *)(vdev->devh))-> |
| 3850 | config.vp_config[i].ring.ring_blocks); |
| 3851 | vxge_debug_init(VXGE_TRACE, |
| 3852 | "%s: Fifo blocks : %d", vdev->ndev->name, |
| 3853 | ((struct __vxge_hw_device *)(vdev->devh))-> |
| 3854 | config.vp_config[i].fifo.fifo_blocks); |
| 3855 | vxge_debug_ll_config(VXGE_TRACE, |
| 3856 | "%s: Max frags : %d", vdev->ndev->name, |
| 3857 | ((struct __vxge_hw_device *)(vdev->devh))-> |
| 3858 | config.vp_config[i].fifo.max_frags); |
| 3859 | break; |
| 3860 | } |
| 3861 | } |
| 3862 | |
| 3863 | #ifdef CONFIG_PM |
| 3864 | /** |
| 3865 | * vxge_pm_suspend - vxge power management suspend entry point |
| 3866 | * |
| 3867 | */ |
| 3868 | static int vxge_pm_suspend(struct pci_dev *pdev, pm_message_t state) |
| 3869 | { |
| 3870 | return -ENOSYS; |
| 3871 | } |
| 3872 | /** |
| 3873 | * vxge_pm_resume - vxge power management resume entry point |
| 3874 | * |
| 3875 | */ |
| 3876 | static int vxge_pm_resume(struct pci_dev *pdev) |
| 3877 | { |
| 3878 | return -ENOSYS; |
| 3879 | } |
| 3880 | |
| 3881 | #endif |
| 3882 | |
| 3883 | /** |
| 3884 | * vxge_io_error_detected - called when PCI error is detected |
| 3885 | * @pdev: Pointer to PCI device |
| 3886 | * @state: The current pci connection state |
| 3887 | * |
| 3888 | * This function is called after a PCI bus error affecting |
| 3889 | * this device has been detected. |
| 3890 | */ |
| 3891 | static pci_ers_result_t vxge_io_error_detected(struct pci_dev *pdev, |
| 3892 | pci_channel_state_t state) |
| 3893 | { |
| 3894 | struct __vxge_hw_device *hldev = |
| 3895 | (struct __vxge_hw_device *) pci_get_drvdata(pdev); |
| 3896 | struct net_device *netdev = hldev->ndev; |
| 3897 | |
| 3898 | netif_device_detach(netdev); |
| 3899 | |
Dean Nelson | e33b992 | 2009-07-31 09:14:03 +0000 | [diff] [blame] | 3900 | if (state == pci_channel_io_perm_failure) |
| 3901 | return PCI_ERS_RESULT_DISCONNECT; |
| 3902 | |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 3903 | if (netif_running(netdev)) { |
| 3904 | /* Bring down the card, while avoiding PCI I/O */ |
| 3905 | do_vxge_close(netdev, 0); |
| 3906 | } |
| 3907 | |
| 3908 | pci_disable_device(pdev); |
| 3909 | |
| 3910 | return PCI_ERS_RESULT_NEED_RESET; |
| 3911 | } |
| 3912 | |
| 3913 | /** |
| 3914 | * vxge_io_slot_reset - called after the pci bus has been reset. |
| 3915 | * @pdev: Pointer to PCI device |
| 3916 | * |
| 3917 | * Restart the card from scratch, as if from a cold-boot. |
| 3918 | * At this point, the card has exprienced a hard reset, |
| 3919 | * followed by fixups by BIOS, and has its config space |
| 3920 | * set up identically to what it was at cold boot. |
| 3921 | */ |
| 3922 | static pci_ers_result_t vxge_io_slot_reset(struct pci_dev *pdev) |
| 3923 | { |
| 3924 | struct __vxge_hw_device *hldev = |
| 3925 | (struct __vxge_hw_device *) pci_get_drvdata(pdev); |
| 3926 | struct net_device *netdev = hldev->ndev; |
| 3927 | |
| 3928 | struct vxgedev *vdev = netdev_priv(netdev); |
| 3929 | |
| 3930 | if (pci_enable_device(pdev)) { |
| 3931 | printk(KERN_ERR "%s: " |
| 3932 | "Cannot re-enable device after reset\n", |
| 3933 | VXGE_DRIVER_NAME); |
| 3934 | return PCI_ERS_RESULT_DISCONNECT; |
| 3935 | } |
| 3936 | |
| 3937 | pci_set_master(pdev); |
| 3938 | vxge_reset(vdev); |
| 3939 | |
| 3940 | return PCI_ERS_RESULT_RECOVERED; |
| 3941 | } |
| 3942 | |
| 3943 | /** |
| 3944 | * vxge_io_resume - called when traffic can start flowing again. |
| 3945 | * @pdev: Pointer to PCI device |
| 3946 | * |
| 3947 | * This callback is called when the error recovery driver tells |
| 3948 | * us that its OK to resume normal operation. |
| 3949 | */ |
| 3950 | static void vxge_io_resume(struct pci_dev *pdev) |
| 3951 | { |
| 3952 | struct __vxge_hw_device *hldev = |
| 3953 | (struct __vxge_hw_device *) pci_get_drvdata(pdev); |
| 3954 | struct net_device *netdev = hldev->ndev; |
| 3955 | |
| 3956 | if (netif_running(netdev)) { |
| 3957 | if (vxge_open(netdev)) { |
| 3958 | printk(KERN_ERR "%s: " |
| 3959 | "Can't bring device back up after reset\n", |
| 3960 | VXGE_DRIVER_NAME); |
| 3961 | return; |
| 3962 | } |
| 3963 | } |
| 3964 | |
| 3965 | netif_device_attach(netdev); |
| 3966 | } |
| 3967 | |
| 3968 | /** |
| 3969 | * vxge_probe |
| 3970 | * @pdev : structure containing the PCI related information of the device. |
| 3971 | * @pre: List of PCI devices supported by the driver listed in vxge_id_table. |
| 3972 | * Description: |
| 3973 | * This function is called when a new PCI device gets detected and initializes |
| 3974 | * it. |
| 3975 | * Return value: |
| 3976 | * returns 0 on success and negative on failure. |
| 3977 | * |
| 3978 | */ |
| 3979 | static int __devinit |
| 3980 | vxge_probe(struct pci_dev *pdev, const struct pci_device_id *pre) |
| 3981 | { |
| 3982 | struct __vxge_hw_device *hldev; |
| 3983 | enum vxge_hw_status status; |
| 3984 | int ret; |
| 3985 | int high_dma = 0; |
| 3986 | u64 vpath_mask = 0; |
| 3987 | struct vxgedev *vdev; |
| 3988 | struct vxge_config ll_config; |
| 3989 | struct vxge_hw_device_config *device_config = NULL; |
| 3990 | struct vxge_hw_device_attr attr; |
| 3991 | int i, j, no_of_vpath = 0, max_vpath_supported = 0; |
| 3992 | u8 *macaddr; |
| 3993 | struct vxge_mac_addrs *entry; |
| 3994 | static int bus = -1, device = -1; |
| 3995 | u8 new_device = 0; |
| 3996 | |
| 3997 | vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__); |
| 3998 | attr.pdev = pdev; |
| 3999 | |
| 4000 | if (bus != pdev->bus->number) |
| 4001 | new_device = 1; |
| 4002 | if (device != PCI_SLOT(pdev->devfn)) |
| 4003 | new_device = 1; |
| 4004 | |
| 4005 | bus = pdev->bus->number; |
| 4006 | device = PCI_SLOT(pdev->devfn); |
| 4007 | |
| 4008 | if (new_device) { |
| 4009 | if (driver_config->config_dev_cnt && |
| 4010 | (driver_config->config_dev_cnt != |
| 4011 | driver_config->total_dev_cnt)) |
| 4012 | vxge_debug_init(VXGE_ERR, |
| 4013 | "%s: Configured %d of %d devices", |
| 4014 | VXGE_DRIVER_NAME, |
| 4015 | driver_config->config_dev_cnt, |
| 4016 | driver_config->total_dev_cnt); |
| 4017 | driver_config->config_dev_cnt = 0; |
| 4018 | driver_config->total_dev_cnt = 0; |
| 4019 | driver_config->g_no_cpus = 0; |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 4020 | } |
| 4021 | |
Sreenivasa Honnur | 657205b | 2009-10-05 01:52:54 +0000 | [diff] [blame] | 4022 | driver_config->vpath_per_dev = max_config_vpath; |
| 4023 | |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 4024 | driver_config->total_dev_cnt++; |
| 4025 | if (++driver_config->config_dev_cnt > max_config_dev) { |
| 4026 | ret = 0; |
| 4027 | goto _exit0; |
| 4028 | } |
| 4029 | |
| 4030 | device_config = kzalloc(sizeof(struct vxge_hw_device_config), |
| 4031 | GFP_KERNEL); |
| 4032 | if (!device_config) { |
| 4033 | ret = -ENOMEM; |
| 4034 | vxge_debug_init(VXGE_ERR, |
| 4035 | "device_config : malloc failed %s %d", |
| 4036 | __FILE__, __LINE__); |
| 4037 | goto _exit0; |
| 4038 | } |
| 4039 | |
| 4040 | memset(&ll_config, 0, sizeof(struct vxge_config)); |
| 4041 | ll_config.tx_steering_type = TX_MULTIQ_STEERING; |
| 4042 | ll_config.intr_type = MSI_X; |
| 4043 | ll_config.napi_weight = NEW_NAPI_WEIGHT; |
| 4044 | ll_config.rth_steering = RTH_STEERING; |
| 4045 | |
| 4046 | /* get the default configuration parameters */ |
| 4047 | vxge_hw_device_config_default_get(device_config); |
| 4048 | |
| 4049 | /* initialize configuration parameters */ |
| 4050 | vxge_device_config_init(device_config, &ll_config.intr_type); |
| 4051 | |
| 4052 | ret = pci_enable_device(pdev); |
| 4053 | if (ret) { |
| 4054 | vxge_debug_init(VXGE_ERR, |
| 4055 | "%s : can not enable PCI device", __func__); |
| 4056 | goto _exit0; |
| 4057 | } |
| 4058 | |
Denis Kirjanov | b3837cec | 2009-12-25 18:48:33 -0800 | [diff] [blame] | 4059 | if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) { |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 4060 | vxge_debug_ll_config(VXGE_TRACE, |
| 4061 | "%s : using 64bit DMA", __func__); |
| 4062 | |
| 4063 | high_dma = 1; |
| 4064 | |
| 4065 | if (pci_set_consistent_dma_mask(pdev, |
Denis Kirjanov | b3837cec | 2009-12-25 18:48:33 -0800 | [diff] [blame] | 4066 | DMA_BIT_MASK(64))) { |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 4067 | vxge_debug_init(VXGE_ERR, |
| 4068 | "%s : unable to obtain 64bit DMA for " |
| 4069 | "consistent allocations", __func__); |
| 4070 | ret = -ENOMEM; |
| 4071 | goto _exit1; |
| 4072 | } |
Denis Kirjanov | b3837cec | 2009-12-25 18:48:33 -0800 | [diff] [blame] | 4073 | } else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) { |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 4074 | vxge_debug_ll_config(VXGE_TRACE, |
| 4075 | "%s : using 32bit DMA", __func__); |
| 4076 | } else { |
| 4077 | ret = -ENOMEM; |
| 4078 | goto _exit1; |
| 4079 | } |
| 4080 | |
| 4081 | if (pci_request_regions(pdev, VXGE_DRIVER_NAME)) { |
| 4082 | vxge_debug_init(VXGE_ERR, |
| 4083 | "%s : request regions failed", __func__); |
| 4084 | ret = -ENODEV; |
| 4085 | goto _exit1; |
| 4086 | } |
| 4087 | |
| 4088 | pci_set_master(pdev); |
| 4089 | |
| 4090 | attr.bar0 = pci_ioremap_bar(pdev, 0); |
| 4091 | if (!attr.bar0) { |
| 4092 | vxge_debug_init(VXGE_ERR, |
| 4093 | "%s : cannot remap io memory bar0", __func__); |
| 4094 | ret = -ENODEV; |
| 4095 | goto _exit2; |
| 4096 | } |
| 4097 | vxge_debug_ll_config(VXGE_TRACE, |
| 4098 | "pci ioremap bar0: %p:0x%llx", |
| 4099 | attr.bar0, |
| 4100 | (unsigned long long)pci_resource_start(pdev, 0)); |
| 4101 | |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 4102 | status = vxge_hw_device_hw_info_get(attr.bar0, |
| 4103 | &ll_config.device_hw_info); |
| 4104 | if (status != VXGE_HW_OK) { |
| 4105 | vxge_debug_init(VXGE_ERR, |
| 4106 | "%s: Reading of hardware info failed." |
| 4107 | "Please try upgrading the firmware.", VXGE_DRIVER_NAME); |
| 4108 | ret = -EINVAL; |
Sreenivasa Honnur | 7975d1e | 2009-07-01 21:12:23 +0000 | [diff] [blame] | 4109 | goto _exit3; |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 4110 | } |
| 4111 | |
| 4112 | if (ll_config.device_hw_info.fw_version.major != |
Sreenivasa Honnur | 22fa125 | 2009-07-01 21:17:24 +0000 | [diff] [blame] | 4113 | VXGE_DRIVER_FW_VERSION_MAJOR) { |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 4114 | vxge_debug_init(VXGE_ERR, |
Sreenivasa Honnur | 22fa125 | 2009-07-01 21:17:24 +0000 | [diff] [blame] | 4115 | "%s: Incorrect firmware version." |
| 4116 | "Please upgrade the firmware to version 1.x.x", |
| 4117 | VXGE_DRIVER_NAME); |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 4118 | ret = -EINVAL; |
Sreenivasa Honnur | 7975d1e | 2009-07-01 21:12:23 +0000 | [diff] [blame] | 4119 | goto _exit3; |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 4120 | } |
| 4121 | |
| 4122 | vpath_mask = ll_config.device_hw_info.vpath_mask; |
| 4123 | if (vpath_mask == 0) { |
| 4124 | vxge_debug_ll_config(VXGE_TRACE, |
| 4125 | "%s: No vpaths available in device", VXGE_DRIVER_NAME); |
| 4126 | ret = -EINVAL; |
Sreenivasa Honnur | 7975d1e | 2009-07-01 21:12:23 +0000 | [diff] [blame] | 4127 | goto _exit3; |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 4128 | } |
| 4129 | |
| 4130 | vxge_debug_ll_config(VXGE_TRACE, |
| 4131 | "%s:%d Vpath mask = %llx", __func__, __LINE__, |
| 4132 | (unsigned long long)vpath_mask); |
| 4133 | |
| 4134 | /* Check how many vpaths are available */ |
| 4135 | for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) { |
| 4136 | if (!((vpath_mask) & vxge_mBIT(i))) |
| 4137 | continue; |
| 4138 | max_vpath_supported++; |
| 4139 | } |
| 4140 | |
Sivakumar Subramani | 5dbc901 | 2009-06-16 18:48:55 +0000 | [diff] [blame] | 4141 | /* Enable SRIOV mode, if firmware has SRIOV support and if it is a PF */ |
| 4142 | if ((VXGE_HW_FUNCTION_MODE_SRIOV == |
| 4143 | ll_config.device_hw_info.function_mode) && |
| 4144 | (max_config_dev > 1) && (pdev->is_physfn)) { |
| 4145 | ret = pci_enable_sriov(pdev, max_config_dev - 1); |
| 4146 | if (ret) |
| 4147 | vxge_debug_ll_config(VXGE_ERR, |
Frans Pop | 2381a55 | 2010-03-24 07:57:36 +0000 | [diff] [blame] | 4148 | "Failed to enable SRIOV: %d\n", ret); |
Sivakumar Subramani | 5dbc901 | 2009-06-16 18:48:55 +0000 | [diff] [blame] | 4149 | } |
| 4150 | |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 4151 | /* |
| 4152 | * Configure vpaths and get driver configured number of vpaths |
| 4153 | * which is less than or equal to the maximum vpaths per function. |
| 4154 | */ |
| 4155 | no_of_vpath = vxge_config_vpaths(device_config, vpath_mask, &ll_config); |
| 4156 | if (!no_of_vpath) { |
| 4157 | vxge_debug_ll_config(VXGE_ERR, |
| 4158 | "%s: No more vpaths to configure", VXGE_DRIVER_NAME); |
| 4159 | ret = 0; |
Sreenivasa Honnur | 7975d1e | 2009-07-01 21:12:23 +0000 | [diff] [blame] | 4160 | goto _exit3; |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 4161 | } |
| 4162 | |
| 4163 | /* Setting driver callbacks */ |
| 4164 | attr.uld_callbacks.link_up = vxge_callback_link_up; |
| 4165 | attr.uld_callbacks.link_down = vxge_callback_link_down; |
| 4166 | attr.uld_callbacks.crit_err = vxge_callback_crit_err; |
| 4167 | |
| 4168 | status = vxge_hw_device_initialize(&hldev, &attr, device_config); |
| 4169 | if (status != VXGE_HW_OK) { |
| 4170 | vxge_debug_init(VXGE_ERR, |
| 4171 | "Failed to initialize device (%d)", status); |
| 4172 | ret = -EINVAL; |
Sreenivasa Honnur | 7975d1e | 2009-07-01 21:12:23 +0000 | [diff] [blame] | 4173 | goto _exit3; |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 4174 | } |
| 4175 | |
Sreenivasa Honnur | fa41fd1 | 2009-10-05 01:56:35 +0000 | [diff] [blame] | 4176 | /* if FCS stripping is not disabled in MAC fail driver load */ |
| 4177 | if (vxge_hw_vpath_strip_fcs_check(hldev, vpath_mask) != VXGE_HW_OK) { |
| 4178 | vxge_debug_init(VXGE_ERR, |
| 4179 | "%s: FCS stripping is not disabled in MAC" |
| 4180 | " failing driver load", VXGE_DRIVER_NAME); |
| 4181 | ret = -EINVAL; |
| 4182 | goto _exit4; |
| 4183 | } |
| 4184 | |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 4185 | vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL); |
| 4186 | |
| 4187 | /* set private device info */ |
| 4188 | pci_set_drvdata(pdev, hldev); |
| 4189 | |
| 4190 | ll_config.gro_enable = VXGE_GRO_ALWAYS_AGGREGATE; |
| 4191 | ll_config.fifo_indicate_max_pkts = VXGE_FIFO_INDICATE_MAX_PKTS; |
| 4192 | ll_config.addr_learn_en = addr_learn_en; |
| 4193 | ll_config.rth_algorithm = RTH_ALG_JENKINS; |
| 4194 | ll_config.rth_hash_type_tcpipv4 = VXGE_HW_RING_HASH_TYPE_TCP_IPV4; |
| 4195 | ll_config.rth_hash_type_ipv4 = VXGE_HW_RING_HASH_TYPE_NONE; |
| 4196 | ll_config.rth_hash_type_tcpipv6 = VXGE_HW_RING_HASH_TYPE_NONE; |
| 4197 | ll_config.rth_hash_type_ipv6 = VXGE_HW_RING_HASH_TYPE_NONE; |
| 4198 | ll_config.rth_hash_type_tcpipv6ex = VXGE_HW_RING_HASH_TYPE_NONE; |
| 4199 | ll_config.rth_hash_type_ipv6ex = VXGE_HW_RING_HASH_TYPE_NONE; |
| 4200 | ll_config.rth_bkt_sz = RTH_BUCKET_SIZE; |
| 4201 | ll_config.tx_pause_enable = VXGE_PAUSE_CTRL_ENABLE; |
| 4202 | ll_config.rx_pause_enable = VXGE_PAUSE_CTRL_ENABLE; |
| 4203 | |
| 4204 | if (vxge_device_register(hldev, &ll_config, high_dma, no_of_vpath, |
| 4205 | &vdev)) { |
| 4206 | ret = -EINVAL; |
Sreenivasa Honnur | 7975d1e | 2009-07-01 21:12:23 +0000 | [diff] [blame] | 4207 | goto _exit4; |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 4208 | } |
| 4209 | |
| 4210 | vxge_hw_device_debug_set(hldev, VXGE_TRACE, VXGE_COMPONENT_LL); |
| 4211 | VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev), |
| 4212 | vxge_hw_device_trace_level_get(hldev)); |
| 4213 | |
| 4214 | /* set private HW device info */ |
| 4215 | hldev->ndev = vdev->ndev; |
| 4216 | vdev->mtu = VXGE_HW_DEFAULT_MTU; |
| 4217 | vdev->bar0 = attr.bar0; |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 4218 | vdev->max_vpath_supported = max_vpath_supported; |
| 4219 | vdev->no_of_vpath = no_of_vpath; |
| 4220 | |
| 4221 | /* Virtual Path count */ |
| 4222 | for (i = 0, j = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) { |
| 4223 | if (!vxge_bVALn(vpath_mask, i, 1)) |
| 4224 | continue; |
| 4225 | if (j >= vdev->no_of_vpath) |
| 4226 | break; |
| 4227 | |
| 4228 | vdev->vpaths[j].is_configured = 1; |
| 4229 | vdev->vpaths[j].device_id = i; |
| 4230 | vdev->vpaths[j].fifo.driver_id = j; |
| 4231 | vdev->vpaths[j].ring.driver_id = j; |
| 4232 | vdev->vpaths[j].vdev = vdev; |
| 4233 | vdev->vpaths[j].max_mac_addr_cnt = max_mac_vpath; |
| 4234 | memcpy((u8 *)vdev->vpaths[j].macaddr, |
| 4235 | (u8 *)ll_config.device_hw_info.mac_addrs[i], |
| 4236 | ETH_ALEN); |
| 4237 | |
| 4238 | /* Initialize the mac address list header */ |
| 4239 | INIT_LIST_HEAD(&vdev->vpaths[j].mac_addr_list); |
| 4240 | |
| 4241 | vdev->vpaths[j].mac_addr_cnt = 0; |
| 4242 | vdev->vpaths[j].mcast_addr_cnt = 0; |
| 4243 | j++; |
| 4244 | } |
| 4245 | vdev->exec_mode = VXGE_EXEC_MODE_DISABLE; |
| 4246 | vdev->max_config_port = max_config_port; |
| 4247 | |
| 4248 | vdev->vlan_tag_strip = vlan_tag_strip; |
| 4249 | |
| 4250 | /* map the hashing selector table to the configured vpaths */ |
| 4251 | for (i = 0; i < vdev->no_of_vpath; i++) |
| 4252 | vdev->vpath_selector[i] = vpath_selector[i]; |
| 4253 | |
| 4254 | macaddr = (u8 *)vdev->vpaths[0].macaddr; |
| 4255 | |
| 4256 | ll_config.device_hw_info.serial_number[VXGE_HW_INFO_LEN - 1] = '\0'; |
| 4257 | ll_config.device_hw_info.product_desc[VXGE_HW_INFO_LEN - 1] = '\0'; |
| 4258 | ll_config.device_hw_info.part_number[VXGE_HW_INFO_LEN - 1] = '\0'; |
| 4259 | |
| 4260 | vxge_debug_init(VXGE_TRACE, "%s: SERIAL NUMBER: %s", |
| 4261 | vdev->ndev->name, ll_config.device_hw_info.serial_number); |
| 4262 | |
| 4263 | vxge_debug_init(VXGE_TRACE, "%s: PART NUMBER: %s", |
| 4264 | vdev->ndev->name, ll_config.device_hw_info.part_number); |
| 4265 | |
| 4266 | vxge_debug_init(VXGE_TRACE, "%s: Neterion %s Server Adapter", |
| 4267 | vdev->ndev->name, ll_config.device_hw_info.product_desc); |
| 4268 | |
hartleys | bf54e73 | 2010-01-05 06:59:23 +0000 | [diff] [blame] | 4269 | vxge_debug_init(VXGE_TRACE, "%s: MAC ADDR: %pM", |
| 4270 | vdev->ndev->name, macaddr); |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 4271 | |
| 4272 | vxge_debug_init(VXGE_TRACE, "%s: Link Width x%d", |
| 4273 | vdev->ndev->name, vxge_hw_device_link_width_get(hldev)); |
| 4274 | |
| 4275 | vxge_debug_init(VXGE_TRACE, |
| 4276 | "%s: Firmware version : %s Date : %s", vdev->ndev->name, |
| 4277 | ll_config.device_hw_info.fw_version.version, |
| 4278 | ll_config.device_hw_info.fw_date.date); |
| 4279 | |
Sreenivasa Honnur | 0a25bdc | 2009-07-01 21:18:06 +0000 | [diff] [blame] | 4280 | if (new_device) { |
| 4281 | switch (ll_config.device_hw_info.function_mode) { |
| 4282 | case VXGE_HW_FUNCTION_MODE_SINGLE_FUNCTION: |
| 4283 | vxge_debug_init(VXGE_TRACE, |
| 4284 | "%s: Single Function Mode Enabled", vdev->ndev->name); |
| 4285 | break; |
| 4286 | case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION: |
| 4287 | vxge_debug_init(VXGE_TRACE, |
| 4288 | "%s: Multi Function Mode Enabled", vdev->ndev->name); |
| 4289 | break; |
| 4290 | case VXGE_HW_FUNCTION_MODE_SRIOV: |
| 4291 | vxge_debug_init(VXGE_TRACE, |
| 4292 | "%s: Single Root IOV Mode Enabled", vdev->ndev->name); |
| 4293 | break; |
| 4294 | case VXGE_HW_FUNCTION_MODE_MRIOV: |
| 4295 | vxge_debug_init(VXGE_TRACE, |
| 4296 | "%s: Multi Root IOV Mode Enabled", vdev->ndev->name); |
| 4297 | break; |
| 4298 | } |
| 4299 | } |
| 4300 | |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 4301 | vxge_print_parm(vdev, vpath_mask); |
| 4302 | |
| 4303 | /* Store the fw version for ethttool option */ |
| 4304 | strcpy(vdev->fw_version, ll_config.device_hw_info.fw_version.version); |
| 4305 | memcpy(vdev->ndev->dev_addr, (u8 *)vdev->vpaths[0].macaddr, ETH_ALEN); |
| 4306 | memcpy(vdev->ndev->perm_addr, vdev->ndev->dev_addr, ETH_ALEN); |
| 4307 | |
| 4308 | /* Copy the station mac address to the list */ |
| 4309 | for (i = 0; i < vdev->no_of_vpath; i++) { |
| 4310 | entry = (struct vxge_mac_addrs *) |
| 4311 | kzalloc(sizeof(struct vxge_mac_addrs), |
| 4312 | GFP_KERNEL); |
| 4313 | if (NULL == entry) { |
| 4314 | vxge_debug_init(VXGE_ERR, |
| 4315 | "%s: mac_addr_list : memory allocation failed", |
| 4316 | vdev->ndev->name); |
| 4317 | ret = -EPERM; |
Sreenivasa Honnur | 7975d1e | 2009-07-01 21:12:23 +0000 | [diff] [blame] | 4318 | goto _exit5; |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 4319 | } |
| 4320 | macaddr = (u8 *)&entry->macaddr; |
| 4321 | memcpy(macaddr, vdev->ndev->dev_addr, ETH_ALEN); |
| 4322 | list_add(&entry->item, &vdev->vpaths[i].mac_addr_list); |
| 4323 | vdev->vpaths[i].mac_addr_cnt = 1; |
| 4324 | } |
| 4325 | |
Sreenivasa Honnur | 914d0d7 | 2009-07-01 21:13:12 +0000 | [diff] [blame] | 4326 | kfree(device_config); |
Sreenivasa Honnur | eb5f10c | 2009-10-05 01:57:29 +0000 | [diff] [blame] | 4327 | |
| 4328 | /* |
| 4329 | * INTA is shared in multi-function mode. This is unlike the INTA |
| 4330 | * implementation in MR mode, where each VH has its own INTA message. |
| 4331 | * - INTA is masked (disabled) as long as at least one function sets |
| 4332 | * its TITAN_MASK_ALL_INT.ALARM bit. |
| 4333 | * - INTA is unmasked (enabled) when all enabled functions have cleared |
| 4334 | * their own TITAN_MASK_ALL_INT.ALARM bit. |
| 4335 | * The TITAN_MASK_ALL_INT ALARM & TRAFFIC bits are cleared on power up. |
| 4336 | * Though this driver leaves the top level interrupts unmasked while |
| 4337 | * leaving the required module interrupt bits masked on exit, there |
| 4338 | * could be a rougue driver around that does not follow this procedure |
| 4339 | * resulting in a failure to generate interrupts. The following code is |
| 4340 | * present to prevent such a failure. |
| 4341 | */ |
| 4342 | |
| 4343 | if (ll_config.device_hw_info.function_mode == |
| 4344 | VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION) |
| 4345 | if (vdev->config.intr_type == INTA) |
| 4346 | vxge_hw_device_unmask_all(hldev); |
| 4347 | |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 4348 | vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d Exiting...", |
| 4349 | vdev->ndev->name, __func__, __LINE__); |
| 4350 | |
| 4351 | vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL); |
| 4352 | VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev), |
| 4353 | vxge_hw_device_trace_level_get(hldev)); |
| 4354 | |
| 4355 | return 0; |
| 4356 | |
Sreenivasa Honnur | 7975d1e | 2009-07-01 21:12:23 +0000 | [diff] [blame] | 4357 | _exit5: |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 4358 | for (i = 0; i < vdev->no_of_vpath; i++) |
| 4359 | vxge_free_mac_add_list(&vdev->vpaths[i]); |
| 4360 | |
| 4361 | vxge_device_unregister(hldev); |
Sreenivasa Honnur | 7975d1e | 2009-07-01 21:12:23 +0000 | [diff] [blame] | 4362 | _exit4: |
Sivakumar Subramani | 5dbc901 | 2009-06-16 18:48:55 +0000 | [diff] [blame] | 4363 | pci_disable_sriov(pdev); |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 4364 | vxge_hw_device_terminate(hldev); |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 4365 | _exit3: |
| 4366 | iounmap(attr.bar0); |
| 4367 | _exit2: |
| 4368 | pci_release_regions(pdev); |
| 4369 | _exit1: |
| 4370 | pci_disable_device(pdev); |
| 4371 | _exit0: |
| 4372 | kfree(device_config); |
| 4373 | driver_config->config_dev_cnt--; |
| 4374 | pci_set_drvdata(pdev, NULL); |
| 4375 | return ret; |
| 4376 | } |
| 4377 | |
| 4378 | /** |
| 4379 | * vxge_rem_nic - Free the PCI device |
| 4380 | * @pdev: structure containing the PCI related information of the device. |
| 4381 | * Description: This function is called by the Pci subsystem to release a |
| 4382 | * PCI device and free up all resource held up by the device. |
| 4383 | */ |
| 4384 | static void __devexit |
| 4385 | vxge_remove(struct pci_dev *pdev) |
| 4386 | { |
| 4387 | struct __vxge_hw_device *hldev; |
| 4388 | struct vxgedev *vdev = NULL; |
| 4389 | struct net_device *dev; |
| 4390 | int i = 0; |
| 4391 | #if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \ |
| 4392 | (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK)) |
| 4393 | u32 level_trace; |
| 4394 | #endif |
| 4395 | |
| 4396 | hldev = (struct __vxge_hw_device *) pci_get_drvdata(pdev); |
| 4397 | |
| 4398 | if (hldev == NULL) |
| 4399 | return; |
| 4400 | dev = hldev->ndev; |
| 4401 | vdev = netdev_priv(dev); |
| 4402 | |
| 4403 | #if ((VXGE_DEBUG_INIT & VXGE_DEBUG_MASK) || \ |
| 4404 | (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK)) |
| 4405 | level_trace = vdev->level_trace; |
| 4406 | #endif |
| 4407 | vxge_debug_entryexit(level_trace, |
| 4408 | "%s:%d", __func__, __LINE__); |
| 4409 | |
| 4410 | vxge_debug_init(level_trace, |
| 4411 | "%s : removing PCI device...", __func__); |
| 4412 | vxge_device_unregister(hldev); |
| 4413 | |
| 4414 | for (i = 0; i < vdev->no_of_vpath; i++) { |
| 4415 | vxge_free_mac_add_list(&vdev->vpaths[i]); |
| 4416 | vdev->vpaths[i].mcast_addr_cnt = 0; |
| 4417 | vdev->vpaths[i].mac_addr_cnt = 0; |
| 4418 | } |
| 4419 | |
| 4420 | kfree(vdev->vpaths); |
| 4421 | |
| 4422 | iounmap(vdev->bar0); |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 4423 | |
Sivakumar Subramani | 5dbc901 | 2009-06-16 18:48:55 +0000 | [diff] [blame] | 4424 | pci_disable_sriov(pdev); |
| 4425 | |
Ramkrishna Vepa | 703da5a | 2009-04-01 18:15:13 +0000 | [diff] [blame] | 4426 | /* we are safe to free it now */ |
| 4427 | free_netdev(dev); |
| 4428 | |
| 4429 | vxge_debug_init(level_trace, |
| 4430 | "%s:%d Device unregistered", __func__, __LINE__); |
| 4431 | |
| 4432 | vxge_hw_device_terminate(hldev); |
| 4433 | |
| 4434 | pci_disable_device(pdev); |
| 4435 | pci_release_regions(pdev); |
| 4436 | pci_set_drvdata(pdev, NULL); |
| 4437 | vxge_debug_entryexit(level_trace, |
| 4438 | "%s:%d Exiting...", __func__, __LINE__); |
| 4439 | } |
| 4440 | |
| 4441 | static struct pci_error_handlers vxge_err_handler = { |
| 4442 | .error_detected = vxge_io_error_detected, |
| 4443 | .slot_reset = vxge_io_slot_reset, |
| 4444 | .resume = vxge_io_resume, |
| 4445 | }; |
| 4446 | |
| 4447 | static struct pci_driver vxge_driver = { |
| 4448 | .name = VXGE_DRIVER_NAME, |
| 4449 | .id_table = vxge_id_table, |
| 4450 | .probe = vxge_probe, |
| 4451 | .remove = __devexit_p(vxge_remove), |
| 4452 | #ifdef CONFIG_PM |
| 4453 | .suspend = vxge_pm_suspend, |
| 4454 | .resume = vxge_pm_resume, |
| 4455 | #endif |
| 4456 | .err_handler = &vxge_err_handler, |
| 4457 | }; |
| 4458 | |
| 4459 | static int __init |
| 4460 | vxge_starter(void) |
| 4461 | { |
| 4462 | int ret = 0; |
| 4463 | char version[32]; |
| 4464 | snprintf(version, 32, "%s", DRV_VERSION); |
| 4465 | |
| 4466 | printk(KERN_CRIT "%s: Copyright(c) 2002-2009 Neterion Inc\n", |
| 4467 | VXGE_DRIVER_NAME); |
| 4468 | printk(KERN_CRIT "%s: Driver version: %s\n", |
| 4469 | VXGE_DRIVER_NAME, version); |
| 4470 | |
| 4471 | verify_bandwidth(); |
| 4472 | |
| 4473 | driver_config = kzalloc(sizeof(struct vxge_drv_config), GFP_KERNEL); |
| 4474 | if (!driver_config) |
| 4475 | return -ENOMEM; |
| 4476 | |
| 4477 | ret = pci_register_driver(&vxge_driver); |
| 4478 | |
| 4479 | if (driver_config->config_dev_cnt && |
| 4480 | (driver_config->config_dev_cnt != driver_config->total_dev_cnt)) |
| 4481 | vxge_debug_init(VXGE_ERR, |
| 4482 | "%s: Configured %d of %d devices", |
| 4483 | VXGE_DRIVER_NAME, driver_config->config_dev_cnt, |
| 4484 | driver_config->total_dev_cnt); |
| 4485 | |
| 4486 | if (ret) |
| 4487 | kfree(driver_config); |
| 4488 | |
| 4489 | return ret; |
| 4490 | } |
| 4491 | |
| 4492 | static void __exit |
| 4493 | vxge_closer(void) |
| 4494 | { |
| 4495 | pci_unregister_driver(&vxge_driver); |
| 4496 | kfree(driver_config); |
| 4497 | } |
| 4498 | module_init(vxge_starter); |
| 4499 | module_exit(vxge_closer); |