1 /**************************************************************************/ 2 /* */ 3 /* IBM System i and System p Virtual NIC Device Driver */ 4 /* Copyright (C) 2014 IBM Corp. */ 5 /* Santiago Leon (santi_leon@yahoo.com) */ 6 /* Thomas Falcon (tlfalcon@linux.vnet.ibm.com) */ 7 /* John Allen (jallen@linux.vnet.ibm.com) */ 8 /* */ 9 /* This program is free software; you can redistribute it and/or modify */ 10 /* it under the terms of the GNU General Public License as published by */ 11 /* the Free Software Foundation; either version 2 of the License, or */ 12 /* (at your option) any later version. */ 13 /* */ 14 /* This program is distributed in the hope that it will be useful, */ 15 /* but WITHOUT ANY WARRANTY; without even the implied warranty of */ 16 /* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */ 17 /* GNU General Public License for more details. */ 18 /* */ 19 /* You should have received a copy of the GNU General Public License */ 20 /* along with this program. */ 21 /* */ 22 /* This module contains the implementation of a virtual ethernet device */ 23 /* for use with IBM i/p Series LPAR Linux. It utilizes the logical LAN */ 24 /* option of the RS/6000 Platform Architecture to interface with virtual */ 25 /* ethernet NICs that are presented to the partition by the hypervisor. */ 26 /* */ 27 /* Messages are passed between the VNIC driver and the VNIC server using */ 28 /* Command/Response Queues (CRQs) and sub CRQs (sCRQs). CRQs are used to */ 29 /* issue and receive commands that initiate communication with the server */ 30 /* on driver initialization. Sub CRQs (sCRQs) are similar to CRQs, but */ 31 /* are used by the driver to notify the server that a packet is */ 32 /* ready for transmission or that a buffer has been added to receive a */ 33 /* packet. Subsequently, sCRQs are used by the server to notify the */ 34 /* driver that a packet transmission has been completed or that a packet */ 35 /* has been received and placed in a waiting buffer. */ 36 /* */ 37 /* In lieu of a more conventional "on-the-fly" DMA mapping strategy in */ 38 /* which skbs are DMA mapped and immediately unmapped when the transmit */ 39 /* or receive has been completed, the VNIC driver is required to use */ 40 /* "long term mapping". This entails that large, continuous DMA mapped */ 41 /* buffers are allocated on driver initialization and these buffers are */ 42 /* then continuously reused to pass skbs to and from the VNIC server. */ 43 /* */ 44 /**************************************************************************/ 45 46 #include <linux/module.h> 47 #include <linux/moduleparam.h> 48 #include <linux/types.h> 49 #include <linux/errno.h> 50 #include <linux/completion.h> 51 #include <linux/ioport.h> 52 #include <linux/dma-mapping.h> 53 #include <linux/kernel.h> 54 #include <linux/netdevice.h> 55 #include <linux/etherdevice.h> 56 #include <linux/skbuff.h> 57 #include <linux/init.h> 58 #include <linux/delay.h> 59 #include <linux/mm.h> 60 #include <linux/ethtool.h> 61 #include <linux/proc_fs.h> 62 #include <linux/in.h> 63 #include <linux/ip.h> 64 #include <linux/ipv6.h> 65 #include <linux/irq.h> 66 #include <linux/kthread.h> 67 #include <linux/seq_file.h> 68 #include <linux/debugfs.h> 69 #include <linux/interrupt.h> 70 #include <net/net_namespace.h> 71 #include <asm/hvcall.h> 72 #include <linux/atomic.h> 73 #include <asm/vio.h> 74 #include <asm/iommu.h> 75 #include <linux/uaccess.h> 76 #include <asm/firmware.h> 77 #include <linux/workqueue.h> 78 79 #include "ibmvnic.h" 80 81 static const char ibmvnic_driver_name[] = "ibmvnic"; 82 static const char ibmvnic_driver_string[] = "IBM System i/p Virtual NIC Driver"; 83 84 MODULE_AUTHOR("Santiago Leon <santi_leon@yahoo.com>"); 85 MODULE_DESCRIPTION("IBM System i/p Virtual NIC Driver"); 86 MODULE_LICENSE("GPL"); 87 MODULE_VERSION(IBMVNIC_DRIVER_VERSION); 88 89 static int ibmvnic_version = IBMVNIC_INITIAL_VERSION; 90 static int ibmvnic_remove(struct vio_dev *); 91 static void release_sub_crqs(struct ibmvnic_adapter *); 92 static void release_sub_crqs_no_irqs(struct ibmvnic_adapter *); 93 static int ibmvnic_reset_crq(struct ibmvnic_adapter *); 94 static int ibmvnic_send_crq_init(struct ibmvnic_adapter *); 95 static int ibmvnic_reenable_crq_queue(struct ibmvnic_adapter *); 96 static int ibmvnic_send_crq(struct ibmvnic_adapter *, union ibmvnic_crq *); 97 static int send_subcrq(struct ibmvnic_adapter *adapter, u64 remote_handle, 98 union sub_crq *sub_crq); 99 static int send_subcrq_indirect(struct ibmvnic_adapter *, u64, u64, u64); 100 static irqreturn_t ibmvnic_interrupt_rx(int irq, void *instance); 101 static int enable_scrq_irq(struct ibmvnic_adapter *, 102 struct ibmvnic_sub_crq_queue *); 103 static int disable_scrq_irq(struct ibmvnic_adapter *, 104 struct ibmvnic_sub_crq_queue *); 105 static int pending_scrq(struct ibmvnic_adapter *, 106 struct ibmvnic_sub_crq_queue *); 107 static union sub_crq *ibmvnic_next_scrq(struct ibmvnic_adapter *, 108 struct ibmvnic_sub_crq_queue *); 109 static int ibmvnic_poll(struct napi_struct *napi, int data); 110 static void send_map_query(struct ibmvnic_adapter *adapter); 111 static void send_request_map(struct ibmvnic_adapter *, dma_addr_t, __be32, u8); 112 static void send_request_unmap(struct ibmvnic_adapter *, u8); 113 114 struct ibmvnic_stat { 115 char name[ETH_GSTRING_LEN]; 116 int offset; 117 }; 118 119 #define IBMVNIC_STAT_OFF(stat) (offsetof(struct ibmvnic_adapter, stats) + \ 120 offsetof(struct ibmvnic_statistics, stat)) 121 #define IBMVNIC_GET_STAT(a, off) (*((u64 *)(((unsigned long)(a)) + off))) 122 123 static const struct ibmvnic_stat ibmvnic_stats[] = { 124 {"rx_packets", IBMVNIC_STAT_OFF(rx_packets)}, 125 {"rx_bytes", IBMVNIC_STAT_OFF(rx_bytes)}, 126 {"tx_packets", IBMVNIC_STAT_OFF(tx_packets)}, 127 {"tx_bytes", IBMVNIC_STAT_OFF(tx_bytes)}, 128 {"ucast_tx_packets", IBMVNIC_STAT_OFF(ucast_tx_packets)}, 129 {"ucast_rx_packets", IBMVNIC_STAT_OFF(ucast_rx_packets)}, 130 {"mcast_tx_packets", IBMVNIC_STAT_OFF(mcast_tx_packets)}, 131 {"mcast_rx_packets", IBMVNIC_STAT_OFF(mcast_rx_packets)}, 132 {"bcast_tx_packets", IBMVNIC_STAT_OFF(bcast_tx_packets)}, 133 {"bcast_rx_packets", IBMVNIC_STAT_OFF(bcast_rx_packets)}, 134 {"align_errors", IBMVNIC_STAT_OFF(align_errors)}, 135 {"fcs_errors", IBMVNIC_STAT_OFF(fcs_errors)}, 136 {"single_collision_frames", IBMVNIC_STAT_OFF(single_collision_frames)}, 137 {"multi_collision_frames", IBMVNIC_STAT_OFF(multi_collision_frames)}, 138 {"sqe_test_errors", IBMVNIC_STAT_OFF(sqe_test_errors)}, 139 {"deferred_tx", IBMVNIC_STAT_OFF(deferred_tx)}, 140 {"late_collisions", IBMVNIC_STAT_OFF(late_collisions)}, 141 {"excess_collisions", IBMVNIC_STAT_OFF(excess_collisions)}, 142 {"internal_mac_tx_errors", IBMVNIC_STAT_OFF(internal_mac_tx_errors)}, 143 {"carrier_sense", IBMVNIC_STAT_OFF(carrier_sense)}, 144 {"too_long_frames", IBMVNIC_STAT_OFF(too_long_frames)}, 145 {"internal_mac_rx_errors", IBMVNIC_STAT_OFF(internal_mac_rx_errors)}, 146 }; 147 148 static long h_reg_sub_crq(unsigned long unit_address, unsigned long token, 149 unsigned long length, unsigned long *number, 150 unsigned long *irq) 151 { 152 unsigned long retbuf[PLPAR_HCALL_BUFSIZE]; 153 long rc; 154 155 rc = plpar_hcall(H_REG_SUB_CRQ, retbuf, unit_address, token, length); 156 *number = retbuf[0]; 157 *irq = retbuf[1]; 158 159 return rc; 160 } 161 162 /* net_device_ops functions */ 163 164 static void init_rx_pool(struct ibmvnic_adapter *adapter, 165 struct ibmvnic_rx_pool *rx_pool, int num, int index, 166 int buff_size, int active) 167 { 168 netdev_dbg(adapter->netdev, 169 "Initializing rx_pool %d, %d buffs, %d bytes each\n", 170 index, num, buff_size); 171 rx_pool->size = num; 172 rx_pool->index = index; 173 rx_pool->buff_size = buff_size; 174 rx_pool->active = active; 175 } 176 177 static int alloc_long_term_buff(struct ibmvnic_adapter *adapter, 178 struct ibmvnic_long_term_buff *ltb, int size) 179 { 180 struct device *dev = &adapter->vdev->dev; 181 182 ltb->size = size; 183 ltb->buff = dma_alloc_coherent(dev, ltb->size, <b->addr, 184 GFP_KERNEL); 185 186 if (!ltb->buff) { 187 dev_err(dev, "Couldn't alloc long term buffer\n"); 188 return -ENOMEM; 189 } 190 ltb->map_id = adapter->map_id; 191 adapter->map_id++; 192 193 init_completion(&adapter->fw_done); 194 send_request_map(adapter, ltb->addr, 195 ltb->size, ltb->map_id); 196 wait_for_completion(&adapter->fw_done); 197 return 0; 198 } 199 200 static void free_long_term_buff(struct ibmvnic_adapter *adapter, 201 struct ibmvnic_long_term_buff *ltb) 202 { 203 struct device *dev = &adapter->vdev->dev; 204 205 dma_free_coherent(dev, ltb->size, ltb->buff, ltb->addr); 206 if (!adapter->failover) 207 send_request_unmap(adapter, ltb->map_id); 208 } 209 210 static int alloc_rx_pool(struct ibmvnic_adapter *adapter, 211 struct ibmvnic_rx_pool *pool) 212 { 213 struct device *dev = &adapter->vdev->dev; 214 int i; 215 216 pool->free_map = kcalloc(pool->size, sizeof(int), GFP_KERNEL); 217 if (!pool->free_map) 218 return -ENOMEM; 219 220 pool->rx_buff = kcalloc(pool->size, sizeof(struct ibmvnic_rx_buff), 221 GFP_KERNEL); 222 223 if (!pool->rx_buff) { 224 dev_err(dev, "Couldn't alloc rx buffers\n"); 225 kfree(pool->free_map); 226 return -ENOMEM; 227 } 228 229 if (alloc_long_term_buff(adapter, &pool->long_term_buff, 230 pool->size * pool->buff_size)) { 231 kfree(pool->free_map); 232 kfree(pool->rx_buff); 233 return -ENOMEM; 234 } 235 236 for (i = 0; i < pool->size; ++i) 237 pool->free_map[i] = i; 238 239 atomic_set(&pool->available, 0); 240 pool->next_alloc = 0; 241 pool->next_free = 0; 242 243 return 0; 244 } 245 246 static void replenish_rx_pool(struct ibmvnic_adapter *adapter, 247 struct ibmvnic_rx_pool *pool) 248 { 249 int count = pool->size - atomic_read(&pool->available); 250 struct device *dev = &adapter->vdev->dev; 251 int buffers_added = 0; 252 unsigned long lpar_rc; 253 union sub_crq sub_crq; 254 struct sk_buff *skb; 255 unsigned int offset; 256 dma_addr_t dma_addr; 257 unsigned char *dst; 258 u64 *handle_array; 259 int shift = 0; 260 int index; 261 int i; 262 263 handle_array = (u64 *)((u8 *)(adapter->login_rsp_buf) + 264 be32_to_cpu(adapter->login_rsp_buf-> 265 off_rxadd_subcrqs)); 266 267 for (i = 0; i < count; ++i) { 268 skb = alloc_skb(pool->buff_size, GFP_ATOMIC); 269 if (!skb) { 270 dev_err(dev, "Couldn't replenish rx buff\n"); 271 adapter->replenish_no_mem++; 272 break; 273 } 274 275 index = pool->free_map[pool->next_free]; 276 277 if (pool->rx_buff[index].skb) 278 dev_err(dev, "Inconsistent free_map!\n"); 279 280 /* Copy the skb to the long term mapped DMA buffer */ 281 offset = index * pool->buff_size; 282 dst = pool->long_term_buff.buff + offset; 283 memset(dst, 0, pool->buff_size); 284 dma_addr = pool->long_term_buff.addr + offset; 285 pool->rx_buff[index].data = dst; 286 287 pool->free_map[pool->next_free] = IBMVNIC_INVALID_MAP; 288 pool->rx_buff[index].dma = dma_addr; 289 pool->rx_buff[index].skb = skb; 290 pool->rx_buff[index].pool_index = pool->index; 291 pool->rx_buff[index].size = pool->buff_size; 292 293 memset(&sub_crq, 0, sizeof(sub_crq)); 294 sub_crq.rx_add.first = IBMVNIC_CRQ_CMD; 295 sub_crq.rx_add.correlator = 296 cpu_to_be64((u64)&pool->rx_buff[index]); 297 sub_crq.rx_add.ioba = cpu_to_be32(dma_addr); 298 sub_crq.rx_add.map_id = pool->long_term_buff.map_id; 299 300 /* The length field of the sCRQ is defined to be 24 bits so the 301 * buffer size needs to be left shifted by a byte before it is 302 * converted to big endian to prevent the last byte from being 303 * truncated. 304 */ 305 #ifdef __LITTLE_ENDIAN__ 306 shift = 8; 307 #endif 308 sub_crq.rx_add.len = cpu_to_be32(pool->buff_size << shift); 309 310 lpar_rc = send_subcrq(adapter, handle_array[pool->index], 311 &sub_crq); 312 if (lpar_rc != H_SUCCESS) 313 goto failure; 314 315 buffers_added++; 316 adapter->replenish_add_buff_success++; 317 pool->next_free = (pool->next_free + 1) % pool->size; 318 } 319 atomic_add(buffers_added, &pool->available); 320 return; 321 322 failure: 323 dev_info(dev, "replenish pools failure\n"); 324 pool->free_map[pool->next_free] = index; 325 pool->rx_buff[index].skb = NULL; 326 if (!dma_mapping_error(dev, dma_addr)) 327 dma_unmap_single(dev, dma_addr, pool->buff_size, 328 DMA_FROM_DEVICE); 329 330 dev_kfree_skb_any(skb); 331 adapter->replenish_add_buff_failure++; 332 atomic_add(buffers_added, &pool->available); 333 } 334 335 static void replenish_pools(struct ibmvnic_adapter *adapter) 336 { 337 int i; 338 339 if (adapter->migrated) 340 return; 341 342 adapter->replenish_task_cycles++; 343 for (i = 0; i < be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs); 344 i++) { 345 if (adapter->rx_pool[i].active) 346 replenish_rx_pool(adapter, &adapter->rx_pool[i]); 347 } 348 } 349 350 static void free_rx_pool(struct ibmvnic_adapter *adapter, 351 struct ibmvnic_rx_pool *pool) 352 { 353 int i; 354 355 kfree(pool->free_map); 356 pool->free_map = NULL; 357 358 if (!pool->rx_buff) 359 return; 360 361 for (i = 0; i < pool->size; i++) { 362 if (pool->rx_buff[i].skb) { 363 dev_kfree_skb_any(pool->rx_buff[i].skb); 364 pool->rx_buff[i].skb = NULL; 365 } 366 } 367 kfree(pool->rx_buff); 368 pool->rx_buff = NULL; 369 } 370 371 static int ibmvnic_open(struct net_device *netdev) 372 { 373 struct ibmvnic_adapter *adapter = netdev_priv(netdev); 374 struct device *dev = &adapter->vdev->dev; 375 struct ibmvnic_tx_pool *tx_pool; 376 union ibmvnic_crq crq; 377 int rxadd_subcrqs; 378 u64 *size_array; 379 int tx_subcrqs; 380 int i, j; 381 382 rxadd_subcrqs = 383 be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs); 384 tx_subcrqs = 385 be32_to_cpu(adapter->login_rsp_buf->num_txsubm_subcrqs); 386 size_array = (u64 *)((u8 *)(adapter->login_rsp_buf) + 387 be32_to_cpu(adapter->login_rsp_buf-> 388 off_rxadd_buff_size)); 389 adapter->map_id = 1; 390 adapter->napi = kcalloc(adapter->req_rx_queues, 391 sizeof(struct napi_struct), GFP_KERNEL); 392 if (!adapter->napi) 393 goto alloc_napi_failed; 394 for (i = 0; i < adapter->req_rx_queues; i++) { 395 netif_napi_add(netdev, &adapter->napi[i], ibmvnic_poll, 396 NAPI_POLL_WEIGHT); 397 napi_enable(&adapter->napi[i]); 398 } 399 adapter->rx_pool = 400 kcalloc(rxadd_subcrqs, sizeof(struct ibmvnic_rx_pool), GFP_KERNEL); 401 402 if (!adapter->rx_pool) 403 goto rx_pool_arr_alloc_failed; 404 send_map_query(adapter); 405 for (i = 0; i < rxadd_subcrqs; i++) { 406 init_rx_pool(adapter, &adapter->rx_pool[i], 407 IBMVNIC_BUFFS_PER_POOL, i, 408 be64_to_cpu(size_array[i]), 1); 409 if (alloc_rx_pool(adapter, &adapter->rx_pool[i])) { 410 dev_err(dev, "Couldn't alloc rx pool\n"); 411 goto rx_pool_alloc_failed; 412 } 413 } 414 adapter->tx_pool = 415 kcalloc(tx_subcrqs, sizeof(struct ibmvnic_tx_pool), GFP_KERNEL); 416 417 if (!adapter->tx_pool) 418 goto tx_pool_arr_alloc_failed; 419 for (i = 0; i < tx_subcrqs; i++) { 420 tx_pool = &adapter->tx_pool[i]; 421 tx_pool->tx_buff = 422 kcalloc(adapter->max_tx_entries_per_subcrq, 423 sizeof(struct ibmvnic_tx_buff), GFP_KERNEL); 424 if (!tx_pool->tx_buff) 425 goto tx_pool_alloc_failed; 426 427 if (alloc_long_term_buff(adapter, &tx_pool->long_term_buff, 428 adapter->max_tx_entries_per_subcrq * 429 adapter->req_mtu)) 430 goto tx_ltb_alloc_failed; 431 432 tx_pool->free_map = 433 kcalloc(adapter->max_tx_entries_per_subcrq, 434 sizeof(int), GFP_KERNEL); 435 if (!tx_pool->free_map) 436 goto tx_fm_alloc_failed; 437 438 for (j = 0; j < adapter->max_tx_entries_per_subcrq; j++) 439 tx_pool->free_map[j] = j; 440 441 tx_pool->consumer_index = 0; 442 tx_pool->producer_index = 0; 443 } 444 adapter->bounce_buffer_size = 445 (netdev->mtu + ETH_HLEN - 1) / PAGE_SIZE + 1; 446 adapter->bounce_buffer = kmalloc(adapter->bounce_buffer_size, 447 GFP_KERNEL); 448 if (!adapter->bounce_buffer) 449 goto bounce_alloc_failed; 450 451 adapter->bounce_buffer_dma = dma_map_single(dev, adapter->bounce_buffer, 452 adapter->bounce_buffer_size, 453 DMA_TO_DEVICE); 454 if (dma_mapping_error(dev, adapter->bounce_buffer_dma)) { 455 dev_err(dev, "Couldn't map tx bounce buffer\n"); 456 goto bounce_map_failed; 457 } 458 replenish_pools(adapter); 459 460 /* We're ready to receive frames, enable the sub-crq interrupts and 461 * set the logical link state to up 462 */ 463 for (i = 0; i < adapter->req_rx_queues; i++) 464 enable_scrq_irq(adapter, adapter->rx_scrq[i]); 465 466 for (i = 0; i < adapter->req_tx_queues; i++) 467 enable_scrq_irq(adapter, adapter->tx_scrq[i]); 468 469 memset(&crq, 0, sizeof(crq)); 470 crq.logical_link_state.first = IBMVNIC_CRQ_CMD; 471 crq.logical_link_state.cmd = LOGICAL_LINK_STATE; 472 crq.logical_link_state.link_state = IBMVNIC_LOGICAL_LNK_UP; 473 ibmvnic_send_crq(adapter, &crq); 474 475 netif_tx_start_all_queues(netdev); 476 477 return 0; 478 479 bounce_map_failed: 480 kfree(adapter->bounce_buffer); 481 bounce_alloc_failed: 482 i = tx_subcrqs - 1; 483 kfree(adapter->tx_pool[i].free_map); 484 tx_fm_alloc_failed: 485 free_long_term_buff(adapter, &adapter->tx_pool[i].long_term_buff); 486 tx_ltb_alloc_failed: 487 kfree(adapter->tx_pool[i].tx_buff); 488 tx_pool_alloc_failed: 489 for (j = 0; j < i; j++) { 490 kfree(adapter->tx_pool[j].tx_buff); 491 free_long_term_buff(adapter, 492 &adapter->tx_pool[j].long_term_buff); 493 kfree(adapter->tx_pool[j].free_map); 494 } 495 kfree(adapter->tx_pool); 496 adapter->tx_pool = NULL; 497 tx_pool_arr_alloc_failed: 498 i = rxadd_subcrqs; 499 rx_pool_alloc_failed: 500 for (j = 0; j < i; j++) { 501 free_rx_pool(adapter, &adapter->rx_pool[j]); 502 free_long_term_buff(adapter, 503 &adapter->rx_pool[j].long_term_buff); 504 } 505 kfree(adapter->rx_pool); 506 adapter->rx_pool = NULL; 507 rx_pool_arr_alloc_failed: 508 for (i = 0; i < adapter->req_rx_queues; i++) 509 napi_disable(&adapter->napi[i]); 510 alloc_napi_failed: 511 return -ENOMEM; 512 } 513 514 static int ibmvnic_close(struct net_device *netdev) 515 { 516 struct ibmvnic_adapter *adapter = netdev_priv(netdev); 517 struct device *dev = &adapter->vdev->dev; 518 union ibmvnic_crq crq; 519 int i; 520 521 adapter->closing = true; 522 523 for (i = 0; i < adapter->req_rx_queues; i++) 524 napi_disable(&adapter->napi[i]); 525 526 if (!adapter->failover) 527 netif_tx_stop_all_queues(netdev); 528 529 if (adapter->bounce_buffer) { 530 if (!dma_mapping_error(dev, adapter->bounce_buffer_dma)) { 531 dma_unmap_single(&adapter->vdev->dev, 532 adapter->bounce_buffer_dma, 533 adapter->bounce_buffer_size, 534 DMA_BIDIRECTIONAL); 535 adapter->bounce_buffer_dma = DMA_ERROR_CODE; 536 } 537 kfree(adapter->bounce_buffer); 538 adapter->bounce_buffer = NULL; 539 } 540 541 memset(&crq, 0, sizeof(crq)); 542 crq.logical_link_state.first = IBMVNIC_CRQ_CMD; 543 crq.logical_link_state.cmd = LOGICAL_LINK_STATE; 544 crq.logical_link_state.link_state = IBMVNIC_LOGICAL_LNK_DN; 545 ibmvnic_send_crq(adapter, &crq); 546 547 for (i = 0; i < be32_to_cpu(adapter->login_rsp_buf->num_txsubm_subcrqs); 548 i++) { 549 kfree(adapter->tx_pool[i].tx_buff); 550 free_long_term_buff(adapter, 551 &adapter->tx_pool[i].long_term_buff); 552 kfree(adapter->tx_pool[i].free_map); 553 } 554 kfree(adapter->tx_pool); 555 adapter->tx_pool = NULL; 556 557 for (i = 0; i < be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs); 558 i++) { 559 free_rx_pool(adapter, &adapter->rx_pool[i]); 560 free_long_term_buff(adapter, 561 &adapter->rx_pool[i].long_term_buff); 562 } 563 kfree(adapter->rx_pool); 564 adapter->rx_pool = NULL; 565 566 adapter->closing = false; 567 568 return 0; 569 } 570 571 /** 572 * build_hdr_data - creates L2/L3/L4 header data buffer 573 * @hdr_field - bitfield determining needed headers 574 * @skb - socket buffer 575 * @hdr_len - array of header lengths 576 * @tot_len - total length of data 577 * 578 * Reads hdr_field to determine which headers are needed by firmware. 579 * Builds a buffer containing these headers. Saves individual header 580 * lengths and total buffer length to be used to build descriptors. 581 */ 582 static int build_hdr_data(u8 hdr_field, struct sk_buff *skb, 583 int *hdr_len, u8 *hdr_data) 584 { 585 int len = 0; 586 u8 *hdr; 587 588 hdr_len[0] = sizeof(struct ethhdr); 589 590 if (skb->protocol == htons(ETH_P_IP)) { 591 hdr_len[1] = ip_hdr(skb)->ihl * 4; 592 if (ip_hdr(skb)->protocol == IPPROTO_TCP) 593 hdr_len[2] = tcp_hdrlen(skb); 594 else if (ip_hdr(skb)->protocol == IPPROTO_UDP) 595 hdr_len[2] = sizeof(struct udphdr); 596 } else if (skb->protocol == htons(ETH_P_IPV6)) { 597 hdr_len[1] = sizeof(struct ipv6hdr); 598 if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP) 599 hdr_len[2] = tcp_hdrlen(skb); 600 else if (ipv6_hdr(skb)->nexthdr == IPPROTO_UDP) 601 hdr_len[2] = sizeof(struct udphdr); 602 } 603 604 memset(hdr_data, 0, 120); 605 if ((hdr_field >> 6) & 1) { 606 hdr = skb_mac_header(skb); 607 memcpy(hdr_data, hdr, hdr_len[0]); 608 len += hdr_len[0]; 609 } 610 611 if ((hdr_field >> 5) & 1) { 612 hdr = skb_network_header(skb); 613 memcpy(hdr_data + len, hdr, hdr_len[1]); 614 len += hdr_len[1]; 615 } 616 617 if ((hdr_field >> 4) & 1) { 618 hdr = skb_transport_header(skb); 619 memcpy(hdr_data + len, hdr, hdr_len[2]); 620 len += hdr_len[2]; 621 } 622 return len; 623 } 624 625 /** 626 * create_hdr_descs - create header and header extension descriptors 627 * @hdr_field - bitfield determining needed headers 628 * @data - buffer containing header data 629 * @len - length of data buffer 630 * @hdr_len - array of individual header lengths 631 * @scrq_arr - descriptor array 632 * 633 * Creates header and, if needed, header extension descriptors and 634 * places them in a descriptor array, scrq_arr 635 */ 636 637 static void create_hdr_descs(u8 hdr_field, u8 *hdr_data, int len, int *hdr_len, 638 union sub_crq *scrq_arr) 639 { 640 union sub_crq hdr_desc; 641 int tmp_len = len; 642 u8 *data, *cur; 643 int tmp; 644 645 while (tmp_len > 0) { 646 cur = hdr_data + len - tmp_len; 647 648 memset(&hdr_desc, 0, sizeof(hdr_desc)); 649 if (cur != hdr_data) { 650 data = hdr_desc.hdr_ext.data; 651 tmp = tmp_len > 29 ? 29 : tmp_len; 652 hdr_desc.hdr_ext.first = IBMVNIC_CRQ_CMD; 653 hdr_desc.hdr_ext.type = IBMVNIC_HDR_EXT_DESC; 654 hdr_desc.hdr_ext.len = tmp; 655 } else { 656 data = hdr_desc.hdr.data; 657 tmp = tmp_len > 24 ? 24 : tmp_len; 658 hdr_desc.hdr.first = IBMVNIC_CRQ_CMD; 659 hdr_desc.hdr.type = IBMVNIC_HDR_DESC; 660 hdr_desc.hdr.len = tmp; 661 hdr_desc.hdr.l2_len = (u8)hdr_len[0]; 662 hdr_desc.hdr.l3_len = cpu_to_be16((u16)hdr_len[1]); 663 hdr_desc.hdr.l4_len = (u8)hdr_len[2]; 664 hdr_desc.hdr.flag = hdr_field << 1; 665 } 666 memcpy(data, cur, tmp); 667 tmp_len -= tmp; 668 *scrq_arr = hdr_desc; 669 scrq_arr++; 670 } 671 } 672 673 /** 674 * build_hdr_descs_arr - build a header descriptor array 675 * @skb - socket buffer 676 * @num_entries - number of descriptors to be sent 677 * @subcrq - first TX descriptor 678 * @hdr_field - bit field determining which headers will be sent 679 * 680 * This function will build a TX descriptor array with applicable 681 * L2/L3/L4 packet header descriptors to be sent by send_subcrq_indirect. 682 */ 683 684 static void build_hdr_descs_arr(struct ibmvnic_tx_buff *txbuff, 685 int *num_entries, u8 hdr_field) 686 { 687 int hdr_len[3] = {0, 0, 0}; 688 int tot_len, len; 689 u8 *hdr_data = txbuff->hdr_data; 690 691 tot_len = build_hdr_data(hdr_field, txbuff->skb, hdr_len, 692 txbuff->hdr_data); 693 len = tot_len; 694 len -= 24; 695 if (len > 0) 696 num_entries += len % 29 ? len / 29 + 1 : len / 29; 697 create_hdr_descs(hdr_field, hdr_data, tot_len, hdr_len, 698 txbuff->indir_arr + 1); 699 } 700 701 static int ibmvnic_xmit(struct sk_buff *skb, struct net_device *netdev) 702 { 703 struct ibmvnic_adapter *adapter = netdev_priv(netdev); 704 int queue_num = skb_get_queue_mapping(skb); 705 u8 *hdrs = (u8 *)&adapter->tx_rx_desc_req; 706 struct device *dev = &adapter->vdev->dev; 707 struct ibmvnic_tx_buff *tx_buff = NULL; 708 struct ibmvnic_tx_pool *tx_pool; 709 unsigned int tx_send_failed = 0; 710 unsigned int tx_map_failed = 0; 711 unsigned int tx_dropped = 0; 712 unsigned int tx_packets = 0; 713 unsigned int tx_bytes = 0; 714 dma_addr_t data_dma_addr; 715 struct netdev_queue *txq; 716 bool used_bounce = false; 717 unsigned long lpar_rc; 718 union sub_crq tx_crq; 719 unsigned int offset; 720 int num_entries = 1; 721 unsigned char *dst; 722 u64 *handle_array; 723 int index = 0; 724 int ret = 0; 725 726 tx_pool = &adapter->tx_pool[queue_num]; 727 txq = netdev_get_tx_queue(netdev, skb_get_queue_mapping(skb)); 728 handle_array = (u64 *)((u8 *)(adapter->login_rsp_buf) + 729 be32_to_cpu(adapter->login_rsp_buf-> 730 off_txsubm_subcrqs)); 731 if (adapter->migrated) { 732 tx_send_failed++; 733 tx_dropped++; 734 ret = NETDEV_TX_BUSY; 735 goto out; 736 } 737 738 index = tx_pool->free_map[tx_pool->consumer_index]; 739 offset = index * adapter->req_mtu; 740 dst = tx_pool->long_term_buff.buff + offset; 741 memset(dst, 0, adapter->req_mtu); 742 skb_copy_from_linear_data(skb, dst, skb->len); 743 data_dma_addr = tx_pool->long_term_buff.addr + offset; 744 745 tx_pool->consumer_index = 746 (tx_pool->consumer_index + 1) % 747 adapter->max_tx_entries_per_subcrq; 748 749 tx_buff = &tx_pool->tx_buff[index]; 750 tx_buff->skb = skb; 751 tx_buff->data_dma[0] = data_dma_addr; 752 tx_buff->data_len[0] = skb->len; 753 tx_buff->index = index; 754 tx_buff->pool_index = queue_num; 755 tx_buff->last_frag = true; 756 tx_buff->used_bounce = used_bounce; 757 758 memset(&tx_crq, 0, sizeof(tx_crq)); 759 tx_crq.v1.first = IBMVNIC_CRQ_CMD; 760 tx_crq.v1.type = IBMVNIC_TX_DESC; 761 tx_crq.v1.n_crq_elem = 1; 762 tx_crq.v1.n_sge = 1; 763 tx_crq.v1.flags1 = IBMVNIC_TX_COMP_NEEDED; 764 tx_crq.v1.correlator = cpu_to_be32(index); 765 tx_crq.v1.dma_reg = cpu_to_be16(tx_pool->long_term_buff.map_id); 766 tx_crq.v1.sge_len = cpu_to_be32(skb->len); 767 tx_crq.v1.ioba = cpu_to_be64(data_dma_addr); 768 769 if (adapter->vlan_header_insertion) { 770 tx_crq.v1.flags2 |= IBMVNIC_TX_VLAN_INSERT; 771 tx_crq.v1.vlan_id = cpu_to_be16(skb->vlan_tci); 772 } 773 774 if (skb->protocol == htons(ETH_P_IP)) { 775 if (ip_hdr(skb)->version == 4) 776 tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_IPV4; 777 else if (ip_hdr(skb)->version == 6) 778 tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_IPV6; 779 780 if (ip_hdr(skb)->protocol == IPPROTO_TCP) 781 tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_TCP; 782 else if (ip_hdr(skb)->protocol != IPPROTO_TCP) 783 tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_UDP; 784 } 785 786 if (skb->ip_summed == CHECKSUM_PARTIAL) { 787 tx_crq.v1.flags1 |= IBMVNIC_TX_CHKSUM_OFFLOAD; 788 hdrs += 2; 789 } 790 /* determine if l2/3/4 headers are sent to firmware */ 791 if ((*hdrs >> 7) & 1 && 792 (skb->protocol == htons(ETH_P_IP) || 793 skb->protocol == htons(ETH_P_IPV6))) { 794 build_hdr_descs_arr(tx_buff, &num_entries, *hdrs); 795 tx_crq.v1.n_crq_elem = num_entries; 796 tx_buff->indir_arr[0] = tx_crq; 797 tx_buff->indir_dma = dma_map_single(dev, tx_buff->indir_arr, 798 sizeof(tx_buff->indir_arr), 799 DMA_TO_DEVICE); 800 if (dma_mapping_error(dev, tx_buff->indir_dma)) { 801 if (!firmware_has_feature(FW_FEATURE_CMO)) 802 dev_err(dev, "tx: unable to map descriptor array\n"); 803 tx_map_failed++; 804 tx_dropped++; 805 ret = NETDEV_TX_BUSY; 806 goto out; 807 } 808 lpar_rc = send_subcrq_indirect(adapter, handle_array[queue_num], 809 (u64)tx_buff->indir_dma, 810 (u64)num_entries); 811 } else { 812 lpar_rc = send_subcrq(adapter, handle_array[queue_num], 813 &tx_crq); 814 } 815 if (lpar_rc != H_SUCCESS) { 816 dev_err(dev, "tx failed with code %ld\n", lpar_rc); 817 818 if (tx_pool->consumer_index == 0) 819 tx_pool->consumer_index = 820 adapter->max_tx_entries_per_subcrq - 1; 821 else 822 tx_pool->consumer_index--; 823 824 tx_send_failed++; 825 tx_dropped++; 826 ret = NETDEV_TX_BUSY; 827 goto out; 828 } 829 tx_packets++; 830 tx_bytes += skb->len; 831 txq->trans_start = jiffies; 832 ret = NETDEV_TX_OK; 833 834 out: 835 netdev->stats.tx_dropped += tx_dropped; 836 netdev->stats.tx_bytes += tx_bytes; 837 netdev->stats.tx_packets += tx_packets; 838 adapter->tx_send_failed += tx_send_failed; 839 adapter->tx_map_failed += tx_map_failed; 840 841 return ret; 842 } 843 844 static void ibmvnic_set_multi(struct net_device *netdev) 845 { 846 struct ibmvnic_adapter *adapter = netdev_priv(netdev); 847 struct netdev_hw_addr *ha; 848 union ibmvnic_crq crq; 849 850 memset(&crq, 0, sizeof(crq)); 851 crq.request_capability.first = IBMVNIC_CRQ_CMD; 852 crq.request_capability.cmd = REQUEST_CAPABILITY; 853 854 if (netdev->flags & IFF_PROMISC) { 855 if (!adapter->promisc_supported) 856 return; 857 } else { 858 if (netdev->flags & IFF_ALLMULTI) { 859 /* Accept all multicast */ 860 memset(&crq, 0, sizeof(crq)); 861 crq.multicast_ctrl.first = IBMVNIC_CRQ_CMD; 862 crq.multicast_ctrl.cmd = MULTICAST_CTRL; 863 crq.multicast_ctrl.flags = IBMVNIC_ENABLE_ALL; 864 ibmvnic_send_crq(adapter, &crq); 865 } else if (netdev_mc_empty(netdev)) { 866 /* Reject all multicast */ 867 memset(&crq, 0, sizeof(crq)); 868 crq.multicast_ctrl.first = IBMVNIC_CRQ_CMD; 869 crq.multicast_ctrl.cmd = MULTICAST_CTRL; 870 crq.multicast_ctrl.flags = IBMVNIC_DISABLE_ALL; 871 ibmvnic_send_crq(adapter, &crq); 872 } else { 873 /* Accept one or more multicast(s) */ 874 netdev_for_each_mc_addr(ha, netdev) { 875 memset(&crq, 0, sizeof(crq)); 876 crq.multicast_ctrl.first = IBMVNIC_CRQ_CMD; 877 crq.multicast_ctrl.cmd = MULTICAST_CTRL; 878 crq.multicast_ctrl.flags = IBMVNIC_ENABLE_MC; 879 ether_addr_copy(&crq.multicast_ctrl.mac_addr[0], 880 ha->addr); 881 ibmvnic_send_crq(adapter, &crq); 882 } 883 } 884 } 885 } 886 887 static int ibmvnic_set_mac(struct net_device *netdev, void *p) 888 { 889 struct ibmvnic_adapter *adapter = netdev_priv(netdev); 890 struct sockaddr *addr = p; 891 union ibmvnic_crq crq; 892 893 if (!is_valid_ether_addr(addr->sa_data)) 894 return -EADDRNOTAVAIL; 895 896 memset(&crq, 0, sizeof(crq)); 897 crq.change_mac_addr.first = IBMVNIC_CRQ_CMD; 898 crq.change_mac_addr.cmd = CHANGE_MAC_ADDR; 899 ether_addr_copy(&crq.change_mac_addr.mac_addr[0], addr->sa_data); 900 ibmvnic_send_crq(adapter, &crq); 901 /* netdev->dev_addr is changed in handle_change_mac_rsp function */ 902 return 0; 903 } 904 905 static void ibmvnic_tx_timeout(struct net_device *dev) 906 { 907 struct ibmvnic_adapter *adapter = netdev_priv(dev); 908 int rc; 909 910 /* Adapter timed out, resetting it */ 911 release_sub_crqs(adapter); 912 rc = ibmvnic_reset_crq(adapter); 913 if (rc) 914 dev_err(&adapter->vdev->dev, "Adapter timeout, reset failed\n"); 915 else 916 ibmvnic_send_crq_init(adapter); 917 } 918 919 static void remove_buff_from_pool(struct ibmvnic_adapter *adapter, 920 struct ibmvnic_rx_buff *rx_buff) 921 { 922 struct ibmvnic_rx_pool *pool = &adapter->rx_pool[rx_buff->pool_index]; 923 924 rx_buff->skb = NULL; 925 926 pool->free_map[pool->next_alloc] = (int)(rx_buff - pool->rx_buff); 927 pool->next_alloc = (pool->next_alloc + 1) % pool->size; 928 929 atomic_dec(&pool->available); 930 } 931 932 static int ibmvnic_poll(struct napi_struct *napi, int budget) 933 { 934 struct net_device *netdev = napi->dev; 935 struct ibmvnic_adapter *adapter = netdev_priv(netdev); 936 int scrq_num = (int)(napi - adapter->napi); 937 int frames_processed = 0; 938 restart_poll: 939 while (frames_processed < budget) { 940 struct sk_buff *skb; 941 struct ibmvnic_rx_buff *rx_buff; 942 union sub_crq *next; 943 u32 length; 944 u16 offset; 945 u8 flags = 0; 946 947 if (!pending_scrq(adapter, adapter->rx_scrq[scrq_num])) 948 break; 949 next = ibmvnic_next_scrq(adapter, adapter->rx_scrq[scrq_num]); 950 rx_buff = 951 (struct ibmvnic_rx_buff *)be64_to_cpu(next-> 952 rx_comp.correlator); 953 /* do error checking */ 954 if (next->rx_comp.rc) { 955 netdev_err(netdev, "rx error %x\n", next->rx_comp.rc); 956 /* free the entry */ 957 next->rx_comp.first = 0; 958 remove_buff_from_pool(adapter, rx_buff); 959 break; 960 } 961 962 length = be32_to_cpu(next->rx_comp.len); 963 offset = be16_to_cpu(next->rx_comp.off_frame_data); 964 flags = next->rx_comp.flags; 965 skb = rx_buff->skb; 966 skb_copy_to_linear_data(skb, rx_buff->data + offset, 967 length); 968 skb->vlan_tci = be16_to_cpu(next->rx_comp.vlan_tci); 969 /* free the entry */ 970 next->rx_comp.first = 0; 971 remove_buff_from_pool(adapter, rx_buff); 972 973 skb_put(skb, length); 974 skb->protocol = eth_type_trans(skb, netdev); 975 976 if (flags & IBMVNIC_IP_CHKSUM_GOOD && 977 flags & IBMVNIC_TCP_UDP_CHKSUM_GOOD) { 978 skb->ip_summed = CHECKSUM_UNNECESSARY; 979 } 980 981 length = skb->len; 982 napi_gro_receive(napi, skb); /* send it up */ 983 netdev->stats.rx_packets++; 984 netdev->stats.rx_bytes += length; 985 frames_processed++; 986 } 987 replenish_rx_pool(adapter, &adapter->rx_pool[scrq_num]); 988 989 if (frames_processed < budget) { 990 enable_scrq_irq(adapter, adapter->rx_scrq[scrq_num]); 991 napi_complete_done(napi, frames_processed); 992 if (pending_scrq(adapter, adapter->rx_scrq[scrq_num]) && 993 napi_reschedule(napi)) { 994 disable_scrq_irq(adapter, adapter->rx_scrq[scrq_num]); 995 goto restart_poll; 996 } 997 } 998 return frames_processed; 999 } 1000 1001 #ifdef CONFIG_NET_POLL_CONTROLLER 1002 static void ibmvnic_netpoll_controller(struct net_device *dev) 1003 { 1004 struct ibmvnic_adapter *adapter = netdev_priv(dev); 1005 int i; 1006 1007 replenish_pools(netdev_priv(dev)); 1008 for (i = 0; i < adapter->req_rx_queues; i++) 1009 ibmvnic_interrupt_rx(adapter->rx_scrq[i]->irq, 1010 adapter->rx_scrq[i]); 1011 } 1012 #endif 1013 1014 static const struct net_device_ops ibmvnic_netdev_ops = { 1015 .ndo_open = ibmvnic_open, 1016 .ndo_stop = ibmvnic_close, 1017 .ndo_start_xmit = ibmvnic_xmit, 1018 .ndo_set_rx_mode = ibmvnic_set_multi, 1019 .ndo_set_mac_address = ibmvnic_set_mac, 1020 .ndo_validate_addr = eth_validate_addr, 1021 .ndo_tx_timeout = ibmvnic_tx_timeout, 1022 #ifdef CONFIG_NET_POLL_CONTROLLER 1023 .ndo_poll_controller = ibmvnic_netpoll_controller, 1024 #endif 1025 }; 1026 1027 /* ethtool functions */ 1028 1029 static int ibmvnic_get_link_ksettings(struct net_device *netdev, 1030 struct ethtool_link_ksettings *cmd) 1031 { 1032 u32 supported, advertising; 1033 1034 supported = (SUPPORTED_1000baseT_Full | SUPPORTED_Autoneg | 1035 SUPPORTED_FIBRE); 1036 advertising = (ADVERTISED_1000baseT_Full | ADVERTISED_Autoneg | 1037 ADVERTISED_FIBRE); 1038 cmd->base.speed = SPEED_1000; 1039 cmd->base.duplex = DUPLEX_FULL; 1040 cmd->base.port = PORT_FIBRE; 1041 cmd->base.phy_address = 0; 1042 cmd->base.autoneg = AUTONEG_ENABLE; 1043 1044 ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported, 1045 supported); 1046 ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.advertising, 1047 advertising); 1048 1049 return 0; 1050 } 1051 1052 static void ibmvnic_get_drvinfo(struct net_device *dev, 1053 struct ethtool_drvinfo *info) 1054 { 1055 strlcpy(info->driver, ibmvnic_driver_name, sizeof(info->driver)); 1056 strlcpy(info->version, IBMVNIC_DRIVER_VERSION, sizeof(info->version)); 1057 } 1058 1059 static u32 ibmvnic_get_msglevel(struct net_device *netdev) 1060 { 1061 struct ibmvnic_adapter *adapter = netdev_priv(netdev); 1062 1063 return adapter->msg_enable; 1064 } 1065 1066 static void ibmvnic_set_msglevel(struct net_device *netdev, u32 data) 1067 { 1068 struct ibmvnic_adapter *adapter = netdev_priv(netdev); 1069 1070 adapter->msg_enable = data; 1071 } 1072 1073 static u32 ibmvnic_get_link(struct net_device *netdev) 1074 { 1075 struct ibmvnic_adapter *adapter = netdev_priv(netdev); 1076 1077 /* Don't need to send a query because we request a logical link up at 1078 * init and then we wait for link state indications 1079 */ 1080 return adapter->logical_link_state; 1081 } 1082 1083 static void ibmvnic_get_ringparam(struct net_device *netdev, 1084 struct ethtool_ringparam *ring) 1085 { 1086 ring->rx_max_pending = 0; 1087 ring->tx_max_pending = 0; 1088 ring->rx_mini_max_pending = 0; 1089 ring->rx_jumbo_max_pending = 0; 1090 ring->rx_pending = 0; 1091 ring->tx_pending = 0; 1092 ring->rx_mini_pending = 0; 1093 ring->rx_jumbo_pending = 0; 1094 } 1095 1096 static void ibmvnic_get_strings(struct net_device *dev, u32 stringset, u8 *data) 1097 { 1098 int i; 1099 1100 if (stringset != ETH_SS_STATS) 1101 return; 1102 1103 for (i = 0; i < ARRAY_SIZE(ibmvnic_stats); i++, data += ETH_GSTRING_LEN) 1104 memcpy(data, ibmvnic_stats[i].name, ETH_GSTRING_LEN); 1105 } 1106 1107 static int ibmvnic_get_sset_count(struct net_device *dev, int sset) 1108 { 1109 switch (sset) { 1110 case ETH_SS_STATS: 1111 return ARRAY_SIZE(ibmvnic_stats); 1112 default: 1113 return -EOPNOTSUPP; 1114 } 1115 } 1116 1117 static void ibmvnic_get_ethtool_stats(struct net_device *dev, 1118 struct ethtool_stats *stats, u64 *data) 1119 { 1120 struct ibmvnic_adapter *adapter = netdev_priv(dev); 1121 union ibmvnic_crq crq; 1122 int i; 1123 1124 memset(&crq, 0, sizeof(crq)); 1125 crq.request_statistics.first = IBMVNIC_CRQ_CMD; 1126 crq.request_statistics.cmd = REQUEST_STATISTICS; 1127 crq.request_statistics.ioba = cpu_to_be32(adapter->stats_token); 1128 crq.request_statistics.len = 1129 cpu_to_be32(sizeof(struct ibmvnic_statistics)); 1130 1131 /* Wait for data to be written */ 1132 init_completion(&adapter->stats_done); 1133 ibmvnic_send_crq(adapter, &crq); 1134 wait_for_completion(&adapter->stats_done); 1135 1136 for (i = 0; i < ARRAY_SIZE(ibmvnic_stats); i++) 1137 data[i] = IBMVNIC_GET_STAT(adapter, ibmvnic_stats[i].offset); 1138 } 1139 1140 static const struct ethtool_ops ibmvnic_ethtool_ops = { 1141 .get_drvinfo = ibmvnic_get_drvinfo, 1142 .get_msglevel = ibmvnic_get_msglevel, 1143 .set_msglevel = ibmvnic_set_msglevel, 1144 .get_link = ibmvnic_get_link, 1145 .get_ringparam = ibmvnic_get_ringparam, 1146 .get_strings = ibmvnic_get_strings, 1147 .get_sset_count = ibmvnic_get_sset_count, 1148 .get_ethtool_stats = ibmvnic_get_ethtool_stats, 1149 .get_link_ksettings = ibmvnic_get_link_ksettings, 1150 }; 1151 1152 /* Routines for managing CRQs/sCRQs */ 1153 1154 static void release_sub_crq_queue(struct ibmvnic_adapter *adapter, 1155 struct ibmvnic_sub_crq_queue *scrq) 1156 { 1157 struct device *dev = &adapter->vdev->dev; 1158 long rc; 1159 1160 netdev_dbg(adapter->netdev, "Releasing sub-CRQ\n"); 1161 1162 /* Close the sub-crqs */ 1163 do { 1164 rc = plpar_hcall_norets(H_FREE_SUB_CRQ, 1165 adapter->vdev->unit_address, 1166 scrq->crq_num); 1167 } while (rc == H_BUSY || H_IS_LONG_BUSY(rc)); 1168 1169 dma_unmap_single(dev, scrq->msg_token, 4 * PAGE_SIZE, 1170 DMA_BIDIRECTIONAL); 1171 free_pages((unsigned long)scrq->msgs, 2); 1172 kfree(scrq); 1173 } 1174 1175 static struct ibmvnic_sub_crq_queue *init_sub_crq_queue(struct ibmvnic_adapter 1176 *adapter) 1177 { 1178 struct device *dev = &adapter->vdev->dev; 1179 struct ibmvnic_sub_crq_queue *scrq; 1180 int rc; 1181 1182 scrq = kmalloc(sizeof(*scrq), GFP_ATOMIC); 1183 if (!scrq) 1184 return NULL; 1185 1186 scrq->msgs = (union sub_crq *)__get_free_pages(GFP_ATOMIC, 2); 1187 memset(scrq->msgs, 0, 4 * PAGE_SIZE); 1188 if (!scrq->msgs) { 1189 dev_warn(dev, "Couldn't allocate crq queue messages page\n"); 1190 goto zero_page_failed; 1191 } 1192 1193 scrq->msg_token = dma_map_single(dev, scrq->msgs, 4 * PAGE_SIZE, 1194 DMA_BIDIRECTIONAL); 1195 if (dma_mapping_error(dev, scrq->msg_token)) { 1196 dev_warn(dev, "Couldn't map crq queue messages page\n"); 1197 goto map_failed; 1198 } 1199 1200 rc = h_reg_sub_crq(adapter->vdev->unit_address, scrq->msg_token, 1201 4 * PAGE_SIZE, &scrq->crq_num, &scrq->hw_irq); 1202 1203 if (rc == H_RESOURCE) 1204 rc = ibmvnic_reset_crq(adapter); 1205 1206 if (rc == H_CLOSED) { 1207 dev_warn(dev, "Partner adapter not ready, waiting.\n"); 1208 } else if (rc) { 1209 dev_warn(dev, "Error %d registering sub-crq\n", rc); 1210 goto reg_failed; 1211 } 1212 1213 scrq->adapter = adapter; 1214 scrq->size = 4 * PAGE_SIZE / sizeof(*scrq->msgs); 1215 scrq->cur = 0; 1216 scrq->rx_skb_top = NULL; 1217 spin_lock_init(&scrq->lock); 1218 1219 netdev_dbg(adapter->netdev, 1220 "sub-crq initialized, num %lx, hw_irq=%lx, irq=%x\n", 1221 scrq->crq_num, scrq->hw_irq, scrq->irq); 1222 1223 return scrq; 1224 1225 reg_failed: 1226 dma_unmap_single(dev, scrq->msg_token, 4 * PAGE_SIZE, 1227 DMA_BIDIRECTIONAL); 1228 map_failed: 1229 free_pages((unsigned long)scrq->msgs, 2); 1230 zero_page_failed: 1231 kfree(scrq); 1232 1233 return NULL; 1234 } 1235 1236 static void release_sub_crqs(struct ibmvnic_adapter *adapter) 1237 { 1238 int i; 1239 1240 if (adapter->tx_scrq) { 1241 for (i = 0; i < adapter->req_tx_queues; i++) 1242 if (adapter->tx_scrq[i]) { 1243 free_irq(adapter->tx_scrq[i]->irq, 1244 adapter->tx_scrq[i]); 1245 irq_dispose_mapping(adapter->tx_scrq[i]->irq); 1246 release_sub_crq_queue(adapter, 1247 adapter->tx_scrq[i]); 1248 } 1249 adapter->tx_scrq = NULL; 1250 } 1251 1252 if (adapter->rx_scrq) { 1253 for (i = 0; i < adapter->req_rx_queues; i++) 1254 if (adapter->rx_scrq[i]) { 1255 free_irq(adapter->rx_scrq[i]->irq, 1256 adapter->rx_scrq[i]); 1257 irq_dispose_mapping(adapter->rx_scrq[i]->irq); 1258 release_sub_crq_queue(adapter, 1259 adapter->rx_scrq[i]); 1260 } 1261 adapter->rx_scrq = NULL; 1262 } 1263 } 1264 1265 static void release_sub_crqs_no_irqs(struct ibmvnic_adapter *adapter) 1266 { 1267 int i; 1268 1269 if (adapter->tx_scrq) { 1270 for (i = 0; i < adapter->req_tx_queues; i++) 1271 if (adapter->tx_scrq[i]) 1272 release_sub_crq_queue(adapter, 1273 adapter->tx_scrq[i]); 1274 adapter->tx_scrq = NULL; 1275 } 1276 1277 if (adapter->rx_scrq) { 1278 for (i = 0; i < adapter->req_rx_queues; i++) 1279 if (adapter->rx_scrq[i]) 1280 release_sub_crq_queue(adapter, 1281 adapter->rx_scrq[i]); 1282 adapter->rx_scrq = NULL; 1283 } 1284 } 1285 1286 static int disable_scrq_irq(struct ibmvnic_adapter *adapter, 1287 struct ibmvnic_sub_crq_queue *scrq) 1288 { 1289 struct device *dev = &adapter->vdev->dev; 1290 unsigned long rc; 1291 1292 rc = plpar_hcall_norets(H_VIOCTL, adapter->vdev->unit_address, 1293 H_DISABLE_VIO_INTERRUPT, scrq->hw_irq, 0, 0); 1294 if (rc) 1295 dev_err(dev, "Couldn't disable scrq irq 0x%lx. rc=%ld\n", 1296 scrq->hw_irq, rc); 1297 return rc; 1298 } 1299 1300 static int enable_scrq_irq(struct ibmvnic_adapter *adapter, 1301 struct ibmvnic_sub_crq_queue *scrq) 1302 { 1303 struct device *dev = &adapter->vdev->dev; 1304 unsigned long rc; 1305 1306 if (scrq->hw_irq > 0x100000000ULL) { 1307 dev_err(dev, "bad hw_irq = %lx\n", scrq->hw_irq); 1308 return 1; 1309 } 1310 1311 rc = plpar_hcall_norets(H_VIOCTL, adapter->vdev->unit_address, 1312 H_ENABLE_VIO_INTERRUPT, scrq->hw_irq, 0, 0); 1313 if (rc) 1314 dev_err(dev, "Couldn't enable scrq irq 0x%lx. rc=%ld\n", 1315 scrq->hw_irq, rc); 1316 return rc; 1317 } 1318 1319 static int ibmvnic_complete_tx(struct ibmvnic_adapter *adapter, 1320 struct ibmvnic_sub_crq_queue *scrq) 1321 { 1322 struct device *dev = &adapter->vdev->dev; 1323 struct ibmvnic_tx_buff *txbuff; 1324 union sub_crq *next; 1325 int index; 1326 int i, j; 1327 u8 first; 1328 1329 restart_loop: 1330 while (pending_scrq(adapter, scrq)) { 1331 unsigned int pool = scrq->pool_index; 1332 1333 next = ibmvnic_next_scrq(adapter, scrq); 1334 for (i = 0; i < next->tx_comp.num_comps; i++) { 1335 if (next->tx_comp.rcs[i]) { 1336 dev_err(dev, "tx error %x\n", 1337 next->tx_comp.rcs[i]); 1338 continue; 1339 } 1340 index = be32_to_cpu(next->tx_comp.correlators[i]); 1341 txbuff = &adapter->tx_pool[pool].tx_buff[index]; 1342 1343 for (j = 0; j < IBMVNIC_MAX_FRAGS_PER_CRQ; j++) { 1344 if (!txbuff->data_dma[j]) 1345 continue; 1346 1347 txbuff->data_dma[j] = 0; 1348 txbuff->used_bounce = false; 1349 } 1350 /* if sub_crq was sent indirectly */ 1351 first = txbuff->indir_arr[0].generic.first; 1352 if (first == IBMVNIC_CRQ_CMD) { 1353 dma_unmap_single(dev, txbuff->indir_dma, 1354 sizeof(txbuff->indir_arr), 1355 DMA_TO_DEVICE); 1356 } 1357 1358 if (txbuff->last_frag) 1359 dev_kfree_skb_any(txbuff->skb); 1360 1361 adapter->tx_pool[pool].free_map[adapter->tx_pool[pool]. 1362 producer_index] = index; 1363 adapter->tx_pool[pool].producer_index = 1364 (adapter->tx_pool[pool].producer_index + 1) % 1365 adapter->max_tx_entries_per_subcrq; 1366 } 1367 /* remove tx_comp scrq*/ 1368 next->tx_comp.first = 0; 1369 } 1370 1371 enable_scrq_irq(adapter, scrq); 1372 1373 if (pending_scrq(adapter, scrq)) { 1374 disable_scrq_irq(adapter, scrq); 1375 goto restart_loop; 1376 } 1377 1378 return 0; 1379 } 1380 1381 static irqreturn_t ibmvnic_interrupt_tx(int irq, void *instance) 1382 { 1383 struct ibmvnic_sub_crq_queue *scrq = instance; 1384 struct ibmvnic_adapter *adapter = scrq->adapter; 1385 1386 disable_scrq_irq(adapter, scrq); 1387 ibmvnic_complete_tx(adapter, scrq); 1388 1389 return IRQ_HANDLED; 1390 } 1391 1392 static irqreturn_t ibmvnic_interrupt_rx(int irq, void *instance) 1393 { 1394 struct ibmvnic_sub_crq_queue *scrq = instance; 1395 struct ibmvnic_adapter *adapter = scrq->adapter; 1396 1397 if (napi_schedule_prep(&adapter->napi[scrq->scrq_num])) { 1398 disable_scrq_irq(adapter, scrq); 1399 __napi_schedule(&adapter->napi[scrq->scrq_num]); 1400 } 1401 1402 return IRQ_HANDLED; 1403 } 1404 1405 static int init_sub_crq_irqs(struct ibmvnic_adapter *adapter) 1406 { 1407 struct device *dev = &adapter->vdev->dev; 1408 struct ibmvnic_sub_crq_queue *scrq; 1409 int i = 0, j = 0; 1410 int rc = 0; 1411 1412 for (i = 0; i < adapter->req_tx_queues; i++) { 1413 scrq = adapter->tx_scrq[i]; 1414 scrq->irq = irq_create_mapping(NULL, scrq->hw_irq); 1415 1416 if (!scrq->irq) { 1417 rc = -EINVAL; 1418 dev_err(dev, "Error mapping irq\n"); 1419 goto req_tx_irq_failed; 1420 } 1421 1422 rc = request_irq(scrq->irq, ibmvnic_interrupt_tx, 1423 0, "ibmvnic_tx", scrq); 1424 1425 if (rc) { 1426 dev_err(dev, "Couldn't register tx irq 0x%x. rc=%d\n", 1427 scrq->irq, rc); 1428 irq_dispose_mapping(scrq->irq); 1429 goto req_rx_irq_failed; 1430 } 1431 } 1432 1433 for (i = 0; i < adapter->req_rx_queues; i++) { 1434 scrq = adapter->rx_scrq[i]; 1435 scrq->irq = irq_create_mapping(NULL, scrq->hw_irq); 1436 if (!scrq->irq) { 1437 rc = -EINVAL; 1438 dev_err(dev, "Error mapping irq\n"); 1439 goto req_rx_irq_failed; 1440 } 1441 rc = request_irq(scrq->irq, ibmvnic_interrupt_rx, 1442 0, "ibmvnic_rx", scrq); 1443 if (rc) { 1444 dev_err(dev, "Couldn't register rx irq 0x%x. rc=%d\n", 1445 scrq->irq, rc); 1446 irq_dispose_mapping(scrq->irq); 1447 goto req_rx_irq_failed; 1448 } 1449 } 1450 return rc; 1451 1452 req_rx_irq_failed: 1453 for (j = 0; j < i; j++) { 1454 free_irq(adapter->rx_scrq[j]->irq, adapter->rx_scrq[j]); 1455 irq_dispose_mapping(adapter->rx_scrq[j]->irq); 1456 } 1457 i = adapter->req_tx_queues; 1458 req_tx_irq_failed: 1459 for (j = 0; j < i; j++) { 1460 free_irq(adapter->tx_scrq[j]->irq, adapter->tx_scrq[j]); 1461 irq_dispose_mapping(adapter->rx_scrq[j]->irq); 1462 } 1463 release_sub_crqs_no_irqs(adapter); 1464 return rc; 1465 } 1466 1467 static void init_sub_crqs(struct ibmvnic_adapter *adapter, int retry) 1468 { 1469 struct device *dev = &adapter->vdev->dev; 1470 struct ibmvnic_sub_crq_queue **allqueues; 1471 int registered_queues = 0; 1472 union ibmvnic_crq crq; 1473 int total_queues; 1474 int more = 0; 1475 int i; 1476 1477 if (!retry) { 1478 /* Sub-CRQ entries are 32 byte long */ 1479 int entries_page = 4 * PAGE_SIZE / (sizeof(u64) * 4); 1480 1481 if (adapter->min_tx_entries_per_subcrq > entries_page || 1482 adapter->min_rx_add_entries_per_subcrq > entries_page) { 1483 dev_err(dev, "Fatal, invalid entries per sub-crq\n"); 1484 goto allqueues_failed; 1485 } 1486 1487 /* Get the minimum between the queried max and the entries 1488 * that fit in our PAGE_SIZE 1489 */ 1490 adapter->req_tx_entries_per_subcrq = 1491 adapter->max_tx_entries_per_subcrq > entries_page ? 1492 entries_page : adapter->max_tx_entries_per_subcrq; 1493 adapter->req_rx_add_entries_per_subcrq = 1494 adapter->max_rx_add_entries_per_subcrq > entries_page ? 1495 entries_page : adapter->max_rx_add_entries_per_subcrq; 1496 1497 adapter->req_tx_queues = adapter->opt_tx_comp_sub_queues; 1498 adapter->req_rx_queues = adapter->opt_rx_comp_queues; 1499 adapter->req_rx_add_queues = adapter->max_rx_add_queues; 1500 1501 adapter->req_mtu = adapter->netdev->mtu + ETH_HLEN; 1502 } 1503 1504 total_queues = adapter->req_tx_queues + adapter->req_rx_queues; 1505 1506 allqueues = kcalloc(total_queues, sizeof(*allqueues), GFP_ATOMIC); 1507 if (!allqueues) 1508 goto allqueues_failed; 1509 1510 for (i = 0; i < total_queues; i++) { 1511 allqueues[i] = init_sub_crq_queue(adapter); 1512 if (!allqueues[i]) { 1513 dev_warn(dev, "Couldn't allocate all sub-crqs\n"); 1514 break; 1515 } 1516 registered_queues++; 1517 } 1518 1519 /* Make sure we were able to register the minimum number of queues */ 1520 if (registered_queues < 1521 adapter->min_tx_queues + adapter->min_rx_queues) { 1522 dev_err(dev, "Fatal: Couldn't init min number of sub-crqs\n"); 1523 goto tx_failed; 1524 } 1525 1526 /* Distribute the failed allocated queues*/ 1527 for (i = 0; i < total_queues - registered_queues + more ; i++) { 1528 netdev_dbg(adapter->netdev, "Reducing number of queues\n"); 1529 switch (i % 3) { 1530 case 0: 1531 if (adapter->req_rx_queues > adapter->min_rx_queues) 1532 adapter->req_rx_queues--; 1533 else 1534 more++; 1535 break; 1536 case 1: 1537 if (adapter->req_tx_queues > adapter->min_tx_queues) 1538 adapter->req_tx_queues--; 1539 else 1540 more++; 1541 break; 1542 } 1543 } 1544 1545 adapter->tx_scrq = kcalloc(adapter->req_tx_queues, 1546 sizeof(*adapter->tx_scrq), GFP_ATOMIC); 1547 if (!adapter->tx_scrq) 1548 goto tx_failed; 1549 1550 for (i = 0; i < adapter->req_tx_queues; i++) { 1551 adapter->tx_scrq[i] = allqueues[i]; 1552 adapter->tx_scrq[i]->pool_index = i; 1553 } 1554 1555 adapter->rx_scrq = kcalloc(adapter->req_rx_queues, 1556 sizeof(*adapter->rx_scrq), GFP_ATOMIC); 1557 if (!adapter->rx_scrq) 1558 goto rx_failed; 1559 1560 for (i = 0; i < adapter->req_rx_queues; i++) { 1561 adapter->rx_scrq[i] = allqueues[i + adapter->req_tx_queues]; 1562 adapter->rx_scrq[i]->scrq_num = i; 1563 } 1564 1565 memset(&crq, 0, sizeof(crq)); 1566 crq.request_capability.first = IBMVNIC_CRQ_CMD; 1567 crq.request_capability.cmd = REQUEST_CAPABILITY; 1568 1569 crq.request_capability.capability = cpu_to_be16(REQ_TX_QUEUES); 1570 crq.request_capability.number = cpu_to_be64(adapter->req_tx_queues); 1571 atomic_inc(&adapter->running_cap_crqs); 1572 ibmvnic_send_crq(adapter, &crq); 1573 1574 crq.request_capability.capability = cpu_to_be16(REQ_RX_QUEUES); 1575 crq.request_capability.number = cpu_to_be64(adapter->req_rx_queues); 1576 atomic_inc(&adapter->running_cap_crqs); 1577 ibmvnic_send_crq(adapter, &crq); 1578 1579 crq.request_capability.capability = cpu_to_be16(REQ_RX_ADD_QUEUES); 1580 crq.request_capability.number = cpu_to_be64(adapter->req_rx_add_queues); 1581 atomic_inc(&adapter->running_cap_crqs); 1582 ibmvnic_send_crq(adapter, &crq); 1583 1584 crq.request_capability.capability = 1585 cpu_to_be16(REQ_TX_ENTRIES_PER_SUBCRQ); 1586 crq.request_capability.number = 1587 cpu_to_be64(adapter->req_tx_entries_per_subcrq); 1588 atomic_inc(&adapter->running_cap_crqs); 1589 ibmvnic_send_crq(adapter, &crq); 1590 1591 crq.request_capability.capability = 1592 cpu_to_be16(REQ_RX_ADD_ENTRIES_PER_SUBCRQ); 1593 crq.request_capability.number = 1594 cpu_to_be64(adapter->req_rx_add_entries_per_subcrq); 1595 atomic_inc(&adapter->running_cap_crqs); 1596 ibmvnic_send_crq(adapter, &crq); 1597 1598 crq.request_capability.capability = cpu_to_be16(REQ_MTU); 1599 crq.request_capability.number = cpu_to_be64(adapter->req_mtu); 1600 atomic_inc(&adapter->running_cap_crqs); 1601 ibmvnic_send_crq(adapter, &crq); 1602 1603 if (adapter->netdev->flags & IFF_PROMISC) { 1604 if (adapter->promisc_supported) { 1605 crq.request_capability.capability = 1606 cpu_to_be16(PROMISC_REQUESTED); 1607 crq.request_capability.number = cpu_to_be64(1); 1608 atomic_inc(&adapter->running_cap_crqs); 1609 ibmvnic_send_crq(adapter, &crq); 1610 } 1611 } else { 1612 crq.request_capability.capability = 1613 cpu_to_be16(PROMISC_REQUESTED); 1614 crq.request_capability.number = cpu_to_be64(0); 1615 atomic_inc(&adapter->running_cap_crqs); 1616 ibmvnic_send_crq(adapter, &crq); 1617 } 1618 1619 kfree(allqueues); 1620 1621 return; 1622 1623 rx_failed: 1624 kfree(adapter->tx_scrq); 1625 adapter->tx_scrq = NULL; 1626 tx_failed: 1627 for (i = 0; i < registered_queues; i++) 1628 release_sub_crq_queue(adapter, allqueues[i]); 1629 kfree(allqueues); 1630 allqueues_failed: 1631 ibmvnic_remove(adapter->vdev); 1632 } 1633 1634 static int pending_scrq(struct ibmvnic_adapter *adapter, 1635 struct ibmvnic_sub_crq_queue *scrq) 1636 { 1637 union sub_crq *entry = &scrq->msgs[scrq->cur]; 1638 1639 if (entry->generic.first & IBMVNIC_CRQ_CMD_RSP || adapter->closing) 1640 return 1; 1641 else 1642 return 0; 1643 } 1644 1645 static union sub_crq *ibmvnic_next_scrq(struct ibmvnic_adapter *adapter, 1646 struct ibmvnic_sub_crq_queue *scrq) 1647 { 1648 union sub_crq *entry; 1649 unsigned long flags; 1650 1651 spin_lock_irqsave(&scrq->lock, flags); 1652 entry = &scrq->msgs[scrq->cur]; 1653 if (entry->generic.first & IBMVNIC_CRQ_CMD_RSP) { 1654 if (++scrq->cur == scrq->size) 1655 scrq->cur = 0; 1656 } else { 1657 entry = NULL; 1658 } 1659 spin_unlock_irqrestore(&scrq->lock, flags); 1660 1661 return entry; 1662 } 1663 1664 static union ibmvnic_crq *ibmvnic_next_crq(struct ibmvnic_adapter *adapter) 1665 { 1666 struct ibmvnic_crq_queue *queue = &adapter->crq; 1667 union ibmvnic_crq *crq; 1668 1669 crq = &queue->msgs[queue->cur]; 1670 if (crq->generic.first & IBMVNIC_CRQ_CMD_RSP) { 1671 if (++queue->cur == queue->size) 1672 queue->cur = 0; 1673 } else { 1674 crq = NULL; 1675 } 1676 1677 return crq; 1678 } 1679 1680 static int send_subcrq(struct ibmvnic_adapter *adapter, u64 remote_handle, 1681 union sub_crq *sub_crq) 1682 { 1683 unsigned int ua = adapter->vdev->unit_address; 1684 struct device *dev = &adapter->vdev->dev; 1685 u64 *u64_crq = (u64 *)sub_crq; 1686 int rc; 1687 1688 netdev_dbg(adapter->netdev, 1689 "Sending sCRQ %016lx: %016lx %016lx %016lx %016lx\n", 1690 (unsigned long int)cpu_to_be64(remote_handle), 1691 (unsigned long int)cpu_to_be64(u64_crq[0]), 1692 (unsigned long int)cpu_to_be64(u64_crq[1]), 1693 (unsigned long int)cpu_to_be64(u64_crq[2]), 1694 (unsigned long int)cpu_to_be64(u64_crq[3])); 1695 1696 /* Make sure the hypervisor sees the complete request */ 1697 mb(); 1698 1699 rc = plpar_hcall_norets(H_SEND_SUB_CRQ, ua, 1700 cpu_to_be64(remote_handle), 1701 cpu_to_be64(u64_crq[0]), 1702 cpu_to_be64(u64_crq[1]), 1703 cpu_to_be64(u64_crq[2]), 1704 cpu_to_be64(u64_crq[3])); 1705 1706 if (rc) { 1707 if (rc == H_CLOSED) 1708 dev_warn(dev, "CRQ Queue closed\n"); 1709 dev_err(dev, "Send error (rc=%d)\n", rc); 1710 } 1711 1712 return rc; 1713 } 1714 1715 static int send_subcrq_indirect(struct ibmvnic_adapter *adapter, 1716 u64 remote_handle, u64 ioba, u64 num_entries) 1717 { 1718 unsigned int ua = adapter->vdev->unit_address; 1719 struct device *dev = &adapter->vdev->dev; 1720 int rc; 1721 1722 /* Make sure the hypervisor sees the complete request */ 1723 mb(); 1724 rc = plpar_hcall_norets(H_SEND_SUB_CRQ_INDIRECT, ua, 1725 cpu_to_be64(remote_handle), 1726 ioba, num_entries); 1727 1728 if (rc) { 1729 if (rc == H_CLOSED) 1730 dev_warn(dev, "CRQ Queue closed\n"); 1731 dev_err(dev, "Send (indirect) error (rc=%d)\n", rc); 1732 } 1733 1734 return rc; 1735 } 1736 1737 static int ibmvnic_send_crq(struct ibmvnic_adapter *adapter, 1738 union ibmvnic_crq *crq) 1739 { 1740 unsigned int ua = adapter->vdev->unit_address; 1741 struct device *dev = &adapter->vdev->dev; 1742 u64 *u64_crq = (u64 *)crq; 1743 int rc; 1744 1745 netdev_dbg(adapter->netdev, "Sending CRQ: %016lx %016lx\n", 1746 (unsigned long int)cpu_to_be64(u64_crq[0]), 1747 (unsigned long int)cpu_to_be64(u64_crq[1])); 1748 1749 /* Make sure the hypervisor sees the complete request */ 1750 mb(); 1751 1752 rc = plpar_hcall_norets(H_SEND_CRQ, ua, 1753 cpu_to_be64(u64_crq[0]), 1754 cpu_to_be64(u64_crq[1])); 1755 1756 if (rc) { 1757 if (rc == H_CLOSED) 1758 dev_warn(dev, "CRQ Queue closed\n"); 1759 dev_warn(dev, "Send error (rc=%d)\n", rc); 1760 } 1761 1762 return rc; 1763 } 1764 1765 static int ibmvnic_send_crq_init(struct ibmvnic_adapter *adapter) 1766 { 1767 union ibmvnic_crq crq; 1768 1769 memset(&crq, 0, sizeof(crq)); 1770 crq.generic.first = IBMVNIC_CRQ_INIT_CMD; 1771 crq.generic.cmd = IBMVNIC_CRQ_INIT; 1772 netdev_dbg(adapter->netdev, "Sending CRQ init\n"); 1773 1774 return ibmvnic_send_crq(adapter, &crq); 1775 } 1776 1777 static int ibmvnic_send_crq_init_complete(struct ibmvnic_adapter *adapter) 1778 { 1779 union ibmvnic_crq crq; 1780 1781 memset(&crq, 0, sizeof(crq)); 1782 crq.generic.first = IBMVNIC_CRQ_INIT_CMD; 1783 crq.generic.cmd = IBMVNIC_CRQ_INIT_COMPLETE; 1784 netdev_dbg(adapter->netdev, "Sending CRQ init complete\n"); 1785 1786 return ibmvnic_send_crq(adapter, &crq); 1787 } 1788 1789 static int send_version_xchg(struct ibmvnic_adapter *adapter) 1790 { 1791 union ibmvnic_crq crq; 1792 1793 memset(&crq, 0, sizeof(crq)); 1794 crq.version_exchange.first = IBMVNIC_CRQ_CMD; 1795 crq.version_exchange.cmd = VERSION_EXCHANGE; 1796 crq.version_exchange.version = cpu_to_be16(ibmvnic_version); 1797 1798 return ibmvnic_send_crq(adapter, &crq); 1799 } 1800 1801 static void send_login(struct ibmvnic_adapter *adapter) 1802 { 1803 struct ibmvnic_login_rsp_buffer *login_rsp_buffer; 1804 struct ibmvnic_login_buffer *login_buffer; 1805 struct ibmvnic_inflight_cmd *inflight_cmd; 1806 struct device *dev = &adapter->vdev->dev; 1807 dma_addr_t rsp_buffer_token; 1808 dma_addr_t buffer_token; 1809 size_t rsp_buffer_size; 1810 union ibmvnic_crq crq; 1811 unsigned long flags; 1812 size_t buffer_size; 1813 __be64 *tx_list_p; 1814 __be64 *rx_list_p; 1815 int i; 1816 1817 buffer_size = 1818 sizeof(struct ibmvnic_login_buffer) + 1819 sizeof(u64) * (adapter->req_tx_queues + adapter->req_rx_queues); 1820 1821 login_buffer = kmalloc(buffer_size, GFP_ATOMIC); 1822 if (!login_buffer) 1823 goto buf_alloc_failed; 1824 1825 buffer_token = dma_map_single(dev, login_buffer, buffer_size, 1826 DMA_TO_DEVICE); 1827 if (dma_mapping_error(dev, buffer_token)) { 1828 dev_err(dev, "Couldn't map login buffer\n"); 1829 goto buf_map_failed; 1830 } 1831 1832 rsp_buffer_size = sizeof(struct ibmvnic_login_rsp_buffer) + 1833 sizeof(u64) * adapter->req_tx_queues + 1834 sizeof(u64) * adapter->req_rx_queues + 1835 sizeof(u64) * adapter->req_rx_queues + 1836 sizeof(u8) * IBMVNIC_TX_DESC_VERSIONS; 1837 1838 login_rsp_buffer = kmalloc(rsp_buffer_size, GFP_ATOMIC); 1839 if (!login_rsp_buffer) 1840 goto buf_rsp_alloc_failed; 1841 1842 rsp_buffer_token = dma_map_single(dev, login_rsp_buffer, 1843 rsp_buffer_size, DMA_FROM_DEVICE); 1844 if (dma_mapping_error(dev, rsp_buffer_token)) { 1845 dev_err(dev, "Couldn't map login rsp buffer\n"); 1846 goto buf_rsp_map_failed; 1847 } 1848 inflight_cmd = kmalloc(sizeof(*inflight_cmd), GFP_ATOMIC); 1849 if (!inflight_cmd) { 1850 dev_err(dev, "Couldn't allocate inflight_cmd\n"); 1851 goto inflight_alloc_failed; 1852 } 1853 adapter->login_buf = login_buffer; 1854 adapter->login_buf_token = buffer_token; 1855 adapter->login_buf_sz = buffer_size; 1856 adapter->login_rsp_buf = login_rsp_buffer; 1857 adapter->login_rsp_buf_token = rsp_buffer_token; 1858 adapter->login_rsp_buf_sz = rsp_buffer_size; 1859 1860 login_buffer->len = cpu_to_be32(buffer_size); 1861 login_buffer->version = cpu_to_be32(INITIAL_VERSION_LB); 1862 login_buffer->num_txcomp_subcrqs = cpu_to_be32(adapter->req_tx_queues); 1863 login_buffer->off_txcomp_subcrqs = 1864 cpu_to_be32(sizeof(struct ibmvnic_login_buffer)); 1865 login_buffer->num_rxcomp_subcrqs = cpu_to_be32(adapter->req_rx_queues); 1866 login_buffer->off_rxcomp_subcrqs = 1867 cpu_to_be32(sizeof(struct ibmvnic_login_buffer) + 1868 sizeof(u64) * adapter->req_tx_queues); 1869 login_buffer->login_rsp_ioba = cpu_to_be32(rsp_buffer_token); 1870 login_buffer->login_rsp_len = cpu_to_be32(rsp_buffer_size); 1871 1872 tx_list_p = (__be64 *)((char *)login_buffer + 1873 sizeof(struct ibmvnic_login_buffer)); 1874 rx_list_p = (__be64 *)((char *)login_buffer + 1875 sizeof(struct ibmvnic_login_buffer) + 1876 sizeof(u64) * adapter->req_tx_queues); 1877 1878 for (i = 0; i < adapter->req_tx_queues; i++) { 1879 if (adapter->tx_scrq[i]) { 1880 tx_list_p[i] = cpu_to_be64(adapter->tx_scrq[i]-> 1881 crq_num); 1882 } 1883 } 1884 1885 for (i = 0; i < adapter->req_rx_queues; i++) { 1886 if (adapter->rx_scrq[i]) { 1887 rx_list_p[i] = cpu_to_be64(adapter->rx_scrq[i]-> 1888 crq_num); 1889 } 1890 } 1891 1892 netdev_dbg(adapter->netdev, "Login Buffer:\n"); 1893 for (i = 0; i < (adapter->login_buf_sz - 1) / 8 + 1; i++) { 1894 netdev_dbg(adapter->netdev, "%016lx\n", 1895 ((unsigned long int *)(adapter->login_buf))[i]); 1896 } 1897 1898 memset(&crq, 0, sizeof(crq)); 1899 crq.login.first = IBMVNIC_CRQ_CMD; 1900 crq.login.cmd = LOGIN; 1901 crq.login.ioba = cpu_to_be32(buffer_token); 1902 crq.login.len = cpu_to_be32(buffer_size); 1903 1904 memcpy(&inflight_cmd->crq, &crq, sizeof(crq)); 1905 1906 spin_lock_irqsave(&adapter->inflight_lock, flags); 1907 list_add_tail(&inflight_cmd->list, &adapter->inflight); 1908 spin_unlock_irqrestore(&adapter->inflight_lock, flags); 1909 1910 ibmvnic_send_crq(adapter, &crq); 1911 1912 return; 1913 1914 inflight_alloc_failed: 1915 dma_unmap_single(dev, rsp_buffer_token, rsp_buffer_size, 1916 DMA_FROM_DEVICE); 1917 buf_rsp_map_failed: 1918 kfree(login_rsp_buffer); 1919 buf_rsp_alloc_failed: 1920 dma_unmap_single(dev, buffer_token, buffer_size, DMA_TO_DEVICE); 1921 buf_map_failed: 1922 kfree(login_buffer); 1923 buf_alloc_failed: 1924 return; 1925 } 1926 1927 static void send_request_map(struct ibmvnic_adapter *adapter, dma_addr_t addr, 1928 u32 len, u8 map_id) 1929 { 1930 union ibmvnic_crq crq; 1931 1932 memset(&crq, 0, sizeof(crq)); 1933 crq.request_map.first = IBMVNIC_CRQ_CMD; 1934 crq.request_map.cmd = REQUEST_MAP; 1935 crq.request_map.map_id = map_id; 1936 crq.request_map.ioba = cpu_to_be32(addr); 1937 crq.request_map.len = cpu_to_be32(len); 1938 ibmvnic_send_crq(adapter, &crq); 1939 } 1940 1941 static void send_request_unmap(struct ibmvnic_adapter *adapter, u8 map_id) 1942 { 1943 union ibmvnic_crq crq; 1944 1945 memset(&crq, 0, sizeof(crq)); 1946 crq.request_unmap.first = IBMVNIC_CRQ_CMD; 1947 crq.request_unmap.cmd = REQUEST_UNMAP; 1948 crq.request_unmap.map_id = map_id; 1949 ibmvnic_send_crq(adapter, &crq); 1950 } 1951 1952 static void send_map_query(struct ibmvnic_adapter *adapter) 1953 { 1954 union ibmvnic_crq crq; 1955 1956 memset(&crq, 0, sizeof(crq)); 1957 crq.query_map.first = IBMVNIC_CRQ_CMD; 1958 crq.query_map.cmd = QUERY_MAP; 1959 ibmvnic_send_crq(adapter, &crq); 1960 } 1961 1962 /* Send a series of CRQs requesting various capabilities of the VNIC server */ 1963 static void send_cap_queries(struct ibmvnic_adapter *adapter) 1964 { 1965 union ibmvnic_crq crq; 1966 1967 atomic_set(&adapter->running_cap_crqs, 0); 1968 memset(&crq, 0, sizeof(crq)); 1969 crq.query_capability.first = IBMVNIC_CRQ_CMD; 1970 crq.query_capability.cmd = QUERY_CAPABILITY; 1971 1972 crq.query_capability.capability = cpu_to_be16(MIN_TX_QUEUES); 1973 atomic_inc(&adapter->running_cap_crqs); 1974 ibmvnic_send_crq(adapter, &crq); 1975 1976 crq.query_capability.capability = cpu_to_be16(MIN_RX_QUEUES); 1977 atomic_inc(&adapter->running_cap_crqs); 1978 ibmvnic_send_crq(adapter, &crq); 1979 1980 crq.query_capability.capability = cpu_to_be16(MIN_RX_ADD_QUEUES); 1981 atomic_inc(&adapter->running_cap_crqs); 1982 ibmvnic_send_crq(adapter, &crq); 1983 1984 crq.query_capability.capability = cpu_to_be16(MAX_TX_QUEUES); 1985 atomic_inc(&adapter->running_cap_crqs); 1986 ibmvnic_send_crq(adapter, &crq); 1987 1988 crq.query_capability.capability = cpu_to_be16(MAX_RX_QUEUES); 1989 atomic_inc(&adapter->running_cap_crqs); 1990 ibmvnic_send_crq(adapter, &crq); 1991 1992 crq.query_capability.capability = cpu_to_be16(MAX_RX_ADD_QUEUES); 1993 atomic_inc(&adapter->running_cap_crqs); 1994 ibmvnic_send_crq(adapter, &crq); 1995 1996 crq.query_capability.capability = 1997 cpu_to_be16(MIN_TX_ENTRIES_PER_SUBCRQ); 1998 atomic_inc(&adapter->running_cap_crqs); 1999 ibmvnic_send_crq(adapter, &crq); 2000 2001 crq.query_capability.capability = 2002 cpu_to_be16(MIN_RX_ADD_ENTRIES_PER_SUBCRQ); 2003 atomic_inc(&adapter->running_cap_crqs); 2004 ibmvnic_send_crq(adapter, &crq); 2005 2006 crq.query_capability.capability = 2007 cpu_to_be16(MAX_TX_ENTRIES_PER_SUBCRQ); 2008 atomic_inc(&adapter->running_cap_crqs); 2009 ibmvnic_send_crq(adapter, &crq); 2010 2011 crq.query_capability.capability = 2012 cpu_to_be16(MAX_RX_ADD_ENTRIES_PER_SUBCRQ); 2013 atomic_inc(&adapter->running_cap_crqs); 2014 ibmvnic_send_crq(adapter, &crq); 2015 2016 crq.query_capability.capability = cpu_to_be16(TCP_IP_OFFLOAD); 2017 atomic_inc(&adapter->running_cap_crqs); 2018 ibmvnic_send_crq(adapter, &crq); 2019 2020 crq.query_capability.capability = cpu_to_be16(PROMISC_SUPPORTED); 2021 atomic_inc(&adapter->running_cap_crqs); 2022 ibmvnic_send_crq(adapter, &crq); 2023 2024 crq.query_capability.capability = cpu_to_be16(MIN_MTU); 2025 atomic_inc(&adapter->running_cap_crqs); 2026 ibmvnic_send_crq(adapter, &crq); 2027 2028 crq.query_capability.capability = cpu_to_be16(MAX_MTU); 2029 atomic_inc(&adapter->running_cap_crqs); 2030 ibmvnic_send_crq(adapter, &crq); 2031 2032 crq.query_capability.capability = cpu_to_be16(MAX_MULTICAST_FILTERS); 2033 atomic_inc(&adapter->running_cap_crqs); 2034 ibmvnic_send_crq(adapter, &crq); 2035 2036 crq.query_capability.capability = cpu_to_be16(VLAN_HEADER_INSERTION); 2037 atomic_inc(&adapter->running_cap_crqs); 2038 ibmvnic_send_crq(adapter, &crq); 2039 2040 crq.query_capability.capability = cpu_to_be16(MAX_TX_SG_ENTRIES); 2041 atomic_inc(&adapter->running_cap_crqs); 2042 ibmvnic_send_crq(adapter, &crq); 2043 2044 crq.query_capability.capability = cpu_to_be16(RX_SG_SUPPORTED); 2045 atomic_inc(&adapter->running_cap_crqs); 2046 ibmvnic_send_crq(adapter, &crq); 2047 2048 crq.query_capability.capability = cpu_to_be16(OPT_TX_COMP_SUB_QUEUES); 2049 atomic_inc(&adapter->running_cap_crqs); 2050 ibmvnic_send_crq(adapter, &crq); 2051 2052 crq.query_capability.capability = cpu_to_be16(OPT_RX_COMP_QUEUES); 2053 atomic_inc(&adapter->running_cap_crqs); 2054 ibmvnic_send_crq(adapter, &crq); 2055 2056 crq.query_capability.capability = 2057 cpu_to_be16(OPT_RX_BUFADD_Q_PER_RX_COMP_Q); 2058 atomic_inc(&adapter->running_cap_crqs); 2059 ibmvnic_send_crq(adapter, &crq); 2060 2061 crq.query_capability.capability = 2062 cpu_to_be16(OPT_TX_ENTRIES_PER_SUBCRQ); 2063 atomic_inc(&adapter->running_cap_crqs); 2064 ibmvnic_send_crq(adapter, &crq); 2065 2066 crq.query_capability.capability = 2067 cpu_to_be16(OPT_RXBA_ENTRIES_PER_SUBCRQ); 2068 atomic_inc(&adapter->running_cap_crqs); 2069 ibmvnic_send_crq(adapter, &crq); 2070 2071 crq.query_capability.capability = cpu_to_be16(TX_RX_DESC_REQ); 2072 atomic_inc(&adapter->running_cap_crqs); 2073 ibmvnic_send_crq(adapter, &crq); 2074 } 2075 2076 static void handle_query_ip_offload_rsp(struct ibmvnic_adapter *adapter) 2077 { 2078 struct device *dev = &adapter->vdev->dev; 2079 struct ibmvnic_query_ip_offload_buffer *buf = &adapter->ip_offload_buf; 2080 union ibmvnic_crq crq; 2081 int i; 2082 2083 dma_unmap_single(dev, adapter->ip_offload_tok, 2084 sizeof(adapter->ip_offload_buf), DMA_FROM_DEVICE); 2085 2086 netdev_dbg(adapter->netdev, "Query IP Offload Buffer:\n"); 2087 for (i = 0; i < (sizeof(adapter->ip_offload_buf) - 1) / 8 + 1; i++) 2088 netdev_dbg(adapter->netdev, "%016lx\n", 2089 ((unsigned long int *)(buf))[i]); 2090 2091 netdev_dbg(adapter->netdev, "ipv4_chksum = %d\n", buf->ipv4_chksum); 2092 netdev_dbg(adapter->netdev, "ipv6_chksum = %d\n", buf->ipv6_chksum); 2093 netdev_dbg(adapter->netdev, "tcp_ipv4_chksum = %d\n", 2094 buf->tcp_ipv4_chksum); 2095 netdev_dbg(adapter->netdev, "tcp_ipv6_chksum = %d\n", 2096 buf->tcp_ipv6_chksum); 2097 netdev_dbg(adapter->netdev, "udp_ipv4_chksum = %d\n", 2098 buf->udp_ipv4_chksum); 2099 netdev_dbg(adapter->netdev, "udp_ipv6_chksum = %d\n", 2100 buf->udp_ipv6_chksum); 2101 netdev_dbg(adapter->netdev, "large_tx_ipv4 = %d\n", 2102 buf->large_tx_ipv4); 2103 netdev_dbg(adapter->netdev, "large_tx_ipv6 = %d\n", 2104 buf->large_tx_ipv6); 2105 netdev_dbg(adapter->netdev, "large_rx_ipv4 = %d\n", 2106 buf->large_rx_ipv4); 2107 netdev_dbg(adapter->netdev, "large_rx_ipv6 = %d\n", 2108 buf->large_rx_ipv6); 2109 netdev_dbg(adapter->netdev, "max_ipv4_hdr_sz = %d\n", 2110 buf->max_ipv4_header_size); 2111 netdev_dbg(adapter->netdev, "max_ipv6_hdr_sz = %d\n", 2112 buf->max_ipv6_header_size); 2113 netdev_dbg(adapter->netdev, "max_tcp_hdr_size = %d\n", 2114 buf->max_tcp_header_size); 2115 netdev_dbg(adapter->netdev, "max_udp_hdr_size = %d\n", 2116 buf->max_udp_header_size); 2117 netdev_dbg(adapter->netdev, "max_large_tx_size = %d\n", 2118 buf->max_large_tx_size); 2119 netdev_dbg(adapter->netdev, "max_large_rx_size = %d\n", 2120 buf->max_large_rx_size); 2121 netdev_dbg(adapter->netdev, "ipv6_ext_hdr = %d\n", 2122 buf->ipv6_extension_header); 2123 netdev_dbg(adapter->netdev, "tcp_pseudosum_req = %d\n", 2124 buf->tcp_pseudosum_req); 2125 netdev_dbg(adapter->netdev, "num_ipv6_ext_hd = %d\n", 2126 buf->num_ipv6_ext_headers); 2127 netdev_dbg(adapter->netdev, "off_ipv6_ext_hd = %d\n", 2128 buf->off_ipv6_ext_headers); 2129 2130 adapter->ip_offload_ctrl_tok = 2131 dma_map_single(dev, &adapter->ip_offload_ctrl, 2132 sizeof(adapter->ip_offload_ctrl), DMA_TO_DEVICE); 2133 2134 if (dma_mapping_error(dev, adapter->ip_offload_ctrl_tok)) { 2135 dev_err(dev, "Couldn't map ip offload control buffer\n"); 2136 return; 2137 } 2138 2139 adapter->ip_offload_ctrl.version = cpu_to_be32(INITIAL_VERSION_IOB); 2140 adapter->ip_offload_ctrl.tcp_ipv4_chksum = buf->tcp_ipv4_chksum; 2141 adapter->ip_offload_ctrl.udp_ipv4_chksum = buf->udp_ipv4_chksum; 2142 adapter->ip_offload_ctrl.tcp_ipv6_chksum = buf->tcp_ipv6_chksum; 2143 adapter->ip_offload_ctrl.udp_ipv6_chksum = buf->udp_ipv6_chksum; 2144 2145 /* large_tx/rx disabled for now, additional features needed */ 2146 adapter->ip_offload_ctrl.large_tx_ipv4 = 0; 2147 adapter->ip_offload_ctrl.large_tx_ipv6 = 0; 2148 adapter->ip_offload_ctrl.large_rx_ipv4 = 0; 2149 adapter->ip_offload_ctrl.large_rx_ipv6 = 0; 2150 2151 adapter->netdev->features = NETIF_F_GSO; 2152 2153 if (buf->tcp_ipv4_chksum || buf->udp_ipv4_chksum) 2154 adapter->netdev->features |= NETIF_F_IP_CSUM; 2155 2156 if (buf->tcp_ipv6_chksum || buf->udp_ipv6_chksum) 2157 adapter->netdev->features |= NETIF_F_IPV6_CSUM; 2158 2159 if ((adapter->netdev->features & 2160 (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM))) 2161 adapter->netdev->features |= NETIF_F_RXCSUM; 2162 2163 memset(&crq, 0, sizeof(crq)); 2164 crq.control_ip_offload.first = IBMVNIC_CRQ_CMD; 2165 crq.control_ip_offload.cmd = CONTROL_IP_OFFLOAD; 2166 crq.control_ip_offload.len = 2167 cpu_to_be32(sizeof(adapter->ip_offload_ctrl)); 2168 crq.control_ip_offload.ioba = cpu_to_be32(adapter->ip_offload_ctrl_tok); 2169 ibmvnic_send_crq(adapter, &crq); 2170 } 2171 2172 static void handle_error_info_rsp(union ibmvnic_crq *crq, 2173 struct ibmvnic_adapter *adapter) 2174 { 2175 struct device *dev = &adapter->vdev->dev; 2176 struct ibmvnic_error_buff *error_buff, *tmp; 2177 unsigned long flags; 2178 bool found = false; 2179 int i; 2180 2181 if (!crq->request_error_rsp.rc.code) { 2182 dev_info(dev, "Request Error Rsp returned with rc=%x\n", 2183 crq->request_error_rsp.rc.code); 2184 return; 2185 } 2186 2187 spin_lock_irqsave(&adapter->error_list_lock, flags); 2188 list_for_each_entry_safe(error_buff, tmp, &adapter->errors, list) 2189 if (error_buff->error_id == crq->request_error_rsp.error_id) { 2190 found = true; 2191 list_del(&error_buff->list); 2192 break; 2193 } 2194 spin_unlock_irqrestore(&adapter->error_list_lock, flags); 2195 2196 if (!found) { 2197 dev_err(dev, "Couldn't find error id %x\n", 2198 be32_to_cpu(crq->request_error_rsp.error_id)); 2199 return; 2200 } 2201 2202 dev_err(dev, "Detailed info for error id %x:", 2203 be32_to_cpu(crq->request_error_rsp.error_id)); 2204 2205 for (i = 0; i < error_buff->len; i++) { 2206 pr_cont("%02x", (int)error_buff->buff[i]); 2207 if (i % 8 == 7) 2208 pr_cont(" "); 2209 } 2210 pr_cont("\n"); 2211 2212 dma_unmap_single(dev, error_buff->dma, error_buff->len, 2213 DMA_FROM_DEVICE); 2214 kfree(error_buff->buff); 2215 kfree(error_buff); 2216 } 2217 2218 static void handle_dump_size_rsp(union ibmvnic_crq *crq, 2219 struct ibmvnic_adapter *adapter) 2220 { 2221 int len = be32_to_cpu(crq->request_dump_size_rsp.len); 2222 struct ibmvnic_inflight_cmd *inflight_cmd; 2223 struct device *dev = &adapter->vdev->dev; 2224 union ibmvnic_crq newcrq; 2225 unsigned long flags; 2226 2227 /* allocate and map buffer */ 2228 adapter->dump_data = kmalloc(len, GFP_KERNEL); 2229 if (!adapter->dump_data) { 2230 complete(&adapter->fw_done); 2231 return; 2232 } 2233 2234 adapter->dump_data_token = dma_map_single(dev, adapter->dump_data, len, 2235 DMA_FROM_DEVICE); 2236 2237 if (dma_mapping_error(dev, adapter->dump_data_token)) { 2238 if (!firmware_has_feature(FW_FEATURE_CMO)) 2239 dev_err(dev, "Couldn't map dump data\n"); 2240 kfree(adapter->dump_data); 2241 complete(&adapter->fw_done); 2242 return; 2243 } 2244 2245 inflight_cmd = kmalloc(sizeof(*inflight_cmd), GFP_ATOMIC); 2246 if (!inflight_cmd) { 2247 dma_unmap_single(dev, adapter->dump_data_token, len, 2248 DMA_FROM_DEVICE); 2249 kfree(adapter->dump_data); 2250 complete(&adapter->fw_done); 2251 return; 2252 } 2253 2254 memset(&newcrq, 0, sizeof(newcrq)); 2255 newcrq.request_dump.first = IBMVNIC_CRQ_CMD; 2256 newcrq.request_dump.cmd = REQUEST_DUMP; 2257 newcrq.request_dump.ioba = cpu_to_be32(adapter->dump_data_token); 2258 newcrq.request_dump.len = cpu_to_be32(adapter->dump_data_size); 2259 2260 memcpy(&inflight_cmd->crq, &newcrq, sizeof(newcrq)); 2261 2262 spin_lock_irqsave(&adapter->inflight_lock, flags); 2263 list_add_tail(&inflight_cmd->list, &adapter->inflight); 2264 spin_unlock_irqrestore(&adapter->inflight_lock, flags); 2265 2266 ibmvnic_send_crq(adapter, &newcrq); 2267 } 2268 2269 static void handle_error_indication(union ibmvnic_crq *crq, 2270 struct ibmvnic_adapter *adapter) 2271 { 2272 int detail_len = be32_to_cpu(crq->error_indication.detail_error_sz); 2273 struct ibmvnic_inflight_cmd *inflight_cmd; 2274 struct device *dev = &adapter->vdev->dev; 2275 struct ibmvnic_error_buff *error_buff; 2276 union ibmvnic_crq new_crq; 2277 unsigned long flags; 2278 2279 dev_err(dev, "Firmware reports %serror id %x, cause %d\n", 2280 crq->error_indication. 2281 flags & IBMVNIC_FATAL_ERROR ? "FATAL " : "", 2282 be32_to_cpu(crq->error_indication.error_id), 2283 be16_to_cpu(crq->error_indication.error_cause)); 2284 2285 error_buff = kmalloc(sizeof(*error_buff), GFP_ATOMIC); 2286 if (!error_buff) 2287 return; 2288 2289 error_buff->buff = kmalloc(detail_len, GFP_ATOMIC); 2290 if (!error_buff->buff) { 2291 kfree(error_buff); 2292 return; 2293 } 2294 2295 error_buff->dma = dma_map_single(dev, error_buff->buff, detail_len, 2296 DMA_FROM_DEVICE); 2297 if (dma_mapping_error(dev, error_buff->dma)) { 2298 if (!firmware_has_feature(FW_FEATURE_CMO)) 2299 dev_err(dev, "Couldn't map error buffer\n"); 2300 kfree(error_buff->buff); 2301 kfree(error_buff); 2302 return; 2303 } 2304 2305 inflight_cmd = kmalloc(sizeof(*inflight_cmd), GFP_ATOMIC); 2306 if (!inflight_cmd) { 2307 dma_unmap_single(dev, error_buff->dma, detail_len, 2308 DMA_FROM_DEVICE); 2309 kfree(error_buff->buff); 2310 kfree(error_buff); 2311 return; 2312 } 2313 2314 error_buff->len = detail_len; 2315 error_buff->error_id = crq->error_indication.error_id; 2316 2317 spin_lock_irqsave(&adapter->error_list_lock, flags); 2318 list_add_tail(&error_buff->list, &adapter->errors); 2319 spin_unlock_irqrestore(&adapter->error_list_lock, flags); 2320 2321 memset(&new_crq, 0, sizeof(new_crq)); 2322 new_crq.request_error_info.first = IBMVNIC_CRQ_CMD; 2323 new_crq.request_error_info.cmd = REQUEST_ERROR_INFO; 2324 new_crq.request_error_info.ioba = cpu_to_be32(error_buff->dma); 2325 new_crq.request_error_info.len = cpu_to_be32(detail_len); 2326 new_crq.request_error_info.error_id = crq->error_indication.error_id; 2327 2328 memcpy(&inflight_cmd->crq, &crq, sizeof(crq)); 2329 2330 spin_lock_irqsave(&adapter->inflight_lock, flags); 2331 list_add_tail(&inflight_cmd->list, &adapter->inflight); 2332 spin_unlock_irqrestore(&adapter->inflight_lock, flags); 2333 2334 ibmvnic_send_crq(adapter, &new_crq); 2335 } 2336 2337 static void handle_change_mac_rsp(union ibmvnic_crq *crq, 2338 struct ibmvnic_adapter *adapter) 2339 { 2340 struct net_device *netdev = adapter->netdev; 2341 struct device *dev = &adapter->vdev->dev; 2342 long rc; 2343 2344 rc = crq->change_mac_addr_rsp.rc.code; 2345 if (rc) { 2346 dev_err(dev, "Error %ld in CHANGE_MAC_ADDR_RSP\n", rc); 2347 return; 2348 } 2349 memcpy(netdev->dev_addr, &crq->change_mac_addr_rsp.mac_addr[0], 2350 ETH_ALEN); 2351 } 2352 2353 static void handle_request_cap_rsp(union ibmvnic_crq *crq, 2354 struct ibmvnic_adapter *adapter) 2355 { 2356 struct device *dev = &adapter->vdev->dev; 2357 u64 *req_value; 2358 char *name; 2359 2360 atomic_dec(&adapter->running_cap_crqs); 2361 switch (be16_to_cpu(crq->request_capability_rsp.capability)) { 2362 case REQ_TX_QUEUES: 2363 req_value = &adapter->req_tx_queues; 2364 name = "tx"; 2365 break; 2366 case REQ_RX_QUEUES: 2367 req_value = &adapter->req_rx_queues; 2368 name = "rx"; 2369 break; 2370 case REQ_RX_ADD_QUEUES: 2371 req_value = &adapter->req_rx_add_queues; 2372 name = "rx_add"; 2373 break; 2374 case REQ_TX_ENTRIES_PER_SUBCRQ: 2375 req_value = &adapter->req_tx_entries_per_subcrq; 2376 name = "tx_entries_per_subcrq"; 2377 break; 2378 case REQ_RX_ADD_ENTRIES_PER_SUBCRQ: 2379 req_value = &adapter->req_rx_add_entries_per_subcrq; 2380 name = "rx_add_entries_per_subcrq"; 2381 break; 2382 case REQ_MTU: 2383 req_value = &adapter->req_mtu; 2384 name = "mtu"; 2385 break; 2386 case PROMISC_REQUESTED: 2387 req_value = &adapter->promisc; 2388 name = "promisc"; 2389 break; 2390 default: 2391 dev_err(dev, "Got invalid cap request rsp %d\n", 2392 crq->request_capability.capability); 2393 return; 2394 } 2395 2396 switch (crq->request_capability_rsp.rc.code) { 2397 case SUCCESS: 2398 break; 2399 case PARTIALSUCCESS: 2400 dev_info(dev, "req=%lld, rsp=%ld in %s queue, retrying.\n", 2401 *req_value, 2402 (long int)be64_to_cpu(crq->request_capability_rsp. 2403 number), name); 2404 release_sub_crqs_no_irqs(adapter); 2405 *req_value = be64_to_cpu(crq->request_capability_rsp.number); 2406 init_sub_crqs(adapter, 1); 2407 return; 2408 default: 2409 dev_err(dev, "Error %d in request cap rsp\n", 2410 crq->request_capability_rsp.rc.code); 2411 return; 2412 } 2413 2414 /* Done receiving requested capabilities, query IP offload support */ 2415 if (atomic_read(&adapter->running_cap_crqs) == 0) { 2416 union ibmvnic_crq newcrq; 2417 int buf_sz = sizeof(struct ibmvnic_query_ip_offload_buffer); 2418 struct ibmvnic_query_ip_offload_buffer *ip_offload_buf = 2419 &adapter->ip_offload_buf; 2420 2421 adapter->wait_capability = false; 2422 adapter->ip_offload_tok = dma_map_single(dev, ip_offload_buf, 2423 buf_sz, 2424 DMA_FROM_DEVICE); 2425 2426 if (dma_mapping_error(dev, adapter->ip_offload_tok)) { 2427 if (!firmware_has_feature(FW_FEATURE_CMO)) 2428 dev_err(dev, "Couldn't map offload buffer\n"); 2429 return; 2430 } 2431 2432 memset(&newcrq, 0, sizeof(newcrq)); 2433 newcrq.query_ip_offload.first = IBMVNIC_CRQ_CMD; 2434 newcrq.query_ip_offload.cmd = QUERY_IP_OFFLOAD; 2435 newcrq.query_ip_offload.len = cpu_to_be32(buf_sz); 2436 newcrq.query_ip_offload.ioba = 2437 cpu_to_be32(adapter->ip_offload_tok); 2438 2439 ibmvnic_send_crq(adapter, &newcrq); 2440 } 2441 } 2442 2443 static int handle_login_rsp(union ibmvnic_crq *login_rsp_crq, 2444 struct ibmvnic_adapter *adapter) 2445 { 2446 struct device *dev = &adapter->vdev->dev; 2447 struct ibmvnic_login_rsp_buffer *login_rsp = adapter->login_rsp_buf; 2448 struct ibmvnic_login_buffer *login = adapter->login_buf; 2449 union ibmvnic_crq crq; 2450 int i; 2451 2452 dma_unmap_single(dev, adapter->login_buf_token, adapter->login_buf_sz, 2453 DMA_BIDIRECTIONAL); 2454 dma_unmap_single(dev, adapter->login_rsp_buf_token, 2455 adapter->login_rsp_buf_sz, DMA_BIDIRECTIONAL); 2456 2457 /* If the number of queues requested can't be allocated by the 2458 * server, the login response will return with code 1. We will need 2459 * to resend the login buffer with fewer queues requested. 2460 */ 2461 if (login_rsp_crq->generic.rc.code) { 2462 adapter->renegotiate = true; 2463 complete(&adapter->init_done); 2464 return 0; 2465 } 2466 2467 netdev_dbg(adapter->netdev, "Login Response Buffer:\n"); 2468 for (i = 0; i < (adapter->login_rsp_buf_sz - 1) / 8 + 1; i++) { 2469 netdev_dbg(adapter->netdev, "%016lx\n", 2470 ((unsigned long int *)(adapter->login_rsp_buf))[i]); 2471 } 2472 2473 /* Sanity checks */ 2474 if (login->num_txcomp_subcrqs != login_rsp->num_txsubm_subcrqs || 2475 (be32_to_cpu(login->num_rxcomp_subcrqs) * 2476 adapter->req_rx_add_queues != 2477 be32_to_cpu(login_rsp->num_rxadd_subcrqs))) { 2478 dev_err(dev, "FATAL: Inconsistent login and login rsp\n"); 2479 ibmvnic_remove(adapter->vdev); 2480 return -EIO; 2481 } 2482 complete(&adapter->init_done); 2483 2484 memset(&crq, 0, sizeof(crq)); 2485 crq.request_ras_comp_num.first = IBMVNIC_CRQ_CMD; 2486 crq.request_ras_comp_num.cmd = REQUEST_RAS_COMP_NUM; 2487 ibmvnic_send_crq(adapter, &crq); 2488 2489 return 0; 2490 } 2491 2492 static void handle_request_map_rsp(union ibmvnic_crq *crq, 2493 struct ibmvnic_adapter *adapter) 2494 { 2495 struct device *dev = &adapter->vdev->dev; 2496 u8 map_id = crq->request_map_rsp.map_id; 2497 int tx_subcrqs; 2498 int rx_subcrqs; 2499 long rc; 2500 int i; 2501 2502 tx_subcrqs = be32_to_cpu(adapter->login_rsp_buf->num_txsubm_subcrqs); 2503 rx_subcrqs = be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs); 2504 2505 rc = crq->request_map_rsp.rc.code; 2506 if (rc) { 2507 dev_err(dev, "Error %ld in REQUEST_MAP_RSP\n", rc); 2508 adapter->map_id--; 2509 /* need to find and zero tx/rx_pool map_id */ 2510 for (i = 0; i < tx_subcrqs; i++) { 2511 if (adapter->tx_pool[i].long_term_buff.map_id == map_id) 2512 adapter->tx_pool[i].long_term_buff.map_id = 0; 2513 } 2514 for (i = 0; i < rx_subcrqs; i++) { 2515 if (adapter->rx_pool[i].long_term_buff.map_id == map_id) 2516 adapter->rx_pool[i].long_term_buff.map_id = 0; 2517 } 2518 } 2519 complete(&adapter->fw_done); 2520 } 2521 2522 static void handle_request_unmap_rsp(union ibmvnic_crq *crq, 2523 struct ibmvnic_adapter *adapter) 2524 { 2525 struct device *dev = &adapter->vdev->dev; 2526 long rc; 2527 2528 rc = crq->request_unmap_rsp.rc.code; 2529 if (rc) 2530 dev_err(dev, "Error %ld in REQUEST_UNMAP_RSP\n", rc); 2531 } 2532 2533 static void handle_query_map_rsp(union ibmvnic_crq *crq, 2534 struct ibmvnic_adapter *adapter) 2535 { 2536 struct net_device *netdev = adapter->netdev; 2537 struct device *dev = &adapter->vdev->dev; 2538 long rc; 2539 2540 rc = crq->query_map_rsp.rc.code; 2541 if (rc) { 2542 dev_err(dev, "Error %ld in QUERY_MAP_RSP\n", rc); 2543 return; 2544 } 2545 netdev_dbg(netdev, "page_size = %d\ntot_pages = %d\nfree_pages = %d\n", 2546 crq->query_map_rsp.page_size, crq->query_map_rsp.tot_pages, 2547 crq->query_map_rsp.free_pages); 2548 } 2549 2550 static void handle_query_cap_rsp(union ibmvnic_crq *crq, 2551 struct ibmvnic_adapter *adapter) 2552 { 2553 struct net_device *netdev = adapter->netdev; 2554 struct device *dev = &adapter->vdev->dev; 2555 long rc; 2556 2557 atomic_dec(&adapter->running_cap_crqs); 2558 netdev_dbg(netdev, "Outstanding queries: %d\n", 2559 atomic_read(&adapter->running_cap_crqs)); 2560 rc = crq->query_capability.rc.code; 2561 if (rc) { 2562 dev_err(dev, "Error %ld in QUERY_CAP_RSP\n", rc); 2563 goto out; 2564 } 2565 2566 switch (be16_to_cpu(crq->query_capability.capability)) { 2567 case MIN_TX_QUEUES: 2568 adapter->min_tx_queues = 2569 be64_to_cpu(crq->query_capability.number); 2570 netdev_dbg(netdev, "min_tx_queues = %lld\n", 2571 adapter->min_tx_queues); 2572 break; 2573 case MIN_RX_QUEUES: 2574 adapter->min_rx_queues = 2575 be64_to_cpu(crq->query_capability.number); 2576 netdev_dbg(netdev, "min_rx_queues = %lld\n", 2577 adapter->min_rx_queues); 2578 break; 2579 case MIN_RX_ADD_QUEUES: 2580 adapter->min_rx_add_queues = 2581 be64_to_cpu(crq->query_capability.number); 2582 netdev_dbg(netdev, "min_rx_add_queues = %lld\n", 2583 adapter->min_rx_add_queues); 2584 break; 2585 case MAX_TX_QUEUES: 2586 adapter->max_tx_queues = 2587 be64_to_cpu(crq->query_capability.number); 2588 netdev_dbg(netdev, "max_tx_queues = %lld\n", 2589 adapter->max_tx_queues); 2590 break; 2591 case MAX_RX_QUEUES: 2592 adapter->max_rx_queues = 2593 be64_to_cpu(crq->query_capability.number); 2594 netdev_dbg(netdev, "max_rx_queues = %lld\n", 2595 adapter->max_rx_queues); 2596 break; 2597 case MAX_RX_ADD_QUEUES: 2598 adapter->max_rx_add_queues = 2599 be64_to_cpu(crq->query_capability.number); 2600 netdev_dbg(netdev, "max_rx_add_queues = %lld\n", 2601 adapter->max_rx_add_queues); 2602 break; 2603 case MIN_TX_ENTRIES_PER_SUBCRQ: 2604 adapter->min_tx_entries_per_subcrq = 2605 be64_to_cpu(crq->query_capability.number); 2606 netdev_dbg(netdev, "min_tx_entries_per_subcrq = %lld\n", 2607 adapter->min_tx_entries_per_subcrq); 2608 break; 2609 case MIN_RX_ADD_ENTRIES_PER_SUBCRQ: 2610 adapter->min_rx_add_entries_per_subcrq = 2611 be64_to_cpu(crq->query_capability.number); 2612 netdev_dbg(netdev, "min_rx_add_entrs_per_subcrq = %lld\n", 2613 adapter->min_rx_add_entries_per_subcrq); 2614 break; 2615 case MAX_TX_ENTRIES_PER_SUBCRQ: 2616 adapter->max_tx_entries_per_subcrq = 2617 be64_to_cpu(crq->query_capability.number); 2618 netdev_dbg(netdev, "max_tx_entries_per_subcrq = %lld\n", 2619 adapter->max_tx_entries_per_subcrq); 2620 break; 2621 case MAX_RX_ADD_ENTRIES_PER_SUBCRQ: 2622 adapter->max_rx_add_entries_per_subcrq = 2623 be64_to_cpu(crq->query_capability.number); 2624 netdev_dbg(netdev, "max_rx_add_entrs_per_subcrq = %lld\n", 2625 adapter->max_rx_add_entries_per_subcrq); 2626 break; 2627 case TCP_IP_OFFLOAD: 2628 adapter->tcp_ip_offload = 2629 be64_to_cpu(crq->query_capability.number); 2630 netdev_dbg(netdev, "tcp_ip_offload = %lld\n", 2631 adapter->tcp_ip_offload); 2632 break; 2633 case PROMISC_SUPPORTED: 2634 adapter->promisc_supported = 2635 be64_to_cpu(crq->query_capability.number); 2636 netdev_dbg(netdev, "promisc_supported = %lld\n", 2637 adapter->promisc_supported); 2638 break; 2639 case MIN_MTU: 2640 adapter->min_mtu = be64_to_cpu(crq->query_capability.number); 2641 netdev->min_mtu = adapter->min_mtu - ETH_HLEN; 2642 netdev_dbg(netdev, "min_mtu = %lld\n", adapter->min_mtu); 2643 break; 2644 case MAX_MTU: 2645 adapter->max_mtu = be64_to_cpu(crq->query_capability.number); 2646 netdev->max_mtu = adapter->max_mtu - ETH_HLEN; 2647 netdev_dbg(netdev, "max_mtu = %lld\n", adapter->max_mtu); 2648 break; 2649 case MAX_MULTICAST_FILTERS: 2650 adapter->max_multicast_filters = 2651 be64_to_cpu(crq->query_capability.number); 2652 netdev_dbg(netdev, "max_multicast_filters = %lld\n", 2653 adapter->max_multicast_filters); 2654 break; 2655 case VLAN_HEADER_INSERTION: 2656 adapter->vlan_header_insertion = 2657 be64_to_cpu(crq->query_capability.number); 2658 if (adapter->vlan_header_insertion) 2659 netdev->features |= NETIF_F_HW_VLAN_STAG_TX; 2660 netdev_dbg(netdev, "vlan_header_insertion = %lld\n", 2661 adapter->vlan_header_insertion); 2662 break; 2663 case MAX_TX_SG_ENTRIES: 2664 adapter->max_tx_sg_entries = 2665 be64_to_cpu(crq->query_capability.number); 2666 netdev_dbg(netdev, "max_tx_sg_entries = %lld\n", 2667 adapter->max_tx_sg_entries); 2668 break; 2669 case RX_SG_SUPPORTED: 2670 adapter->rx_sg_supported = 2671 be64_to_cpu(crq->query_capability.number); 2672 netdev_dbg(netdev, "rx_sg_supported = %lld\n", 2673 adapter->rx_sg_supported); 2674 break; 2675 case OPT_TX_COMP_SUB_QUEUES: 2676 adapter->opt_tx_comp_sub_queues = 2677 be64_to_cpu(crq->query_capability.number); 2678 netdev_dbg(netdev, "opt_tx_comp_sub_queues = %lld\n", 2679 adapter->opt_tx_comp_sub_queues); 2680 break; 2681 case OPT_RX_COMP_QUEUES: 2682 adapter->opt_rx_comp_queues = 2683 be64_to_cpu(crq->query_capability.number); 2684 netdev_dbg(netdev, "opt_rx_comp_queues = %lld\n", 2685 adapter->opt_rx_comp_queues); 2686 break; 2687 case OPT_RX_BUFADD_Q_PER_RX_COMP_Q: 2688 adapter->opt_rx_bufadd_q_per_rx_comp_q = 2689 be64_to_cpu(crq->query_capability.number); 2690 netdev_dbg(netdev, "opt_rx_bufadd_q_per_rx_comp_q = %lld\n", 2691 adapter->opt_rx_bufadd_q_per_rx_comp_q); 2692 break; 2693 case OPT_TX_ENTRIES_PER_SUBCRQ: 2694 adapter->opt_tx_entries_per_subcrq = 2695 be64_to_cpu(crq->query_capability.number); 2696 netdev_dbg(netdev, "opt_tx_entries_per_subcrq = %lld\n", 2697 adapter->opt_tx_entries_per_subcrq); 2698 break; 2699 case OPT_RXBA_ENTRIES_PER_SUBCRQ: 2700 adapter->opt_rxba_entries_per_subcrq = 2701 be64_to_cpu(crq->query_capability.number); 2702 netdev_dbg(netdev, "opt_rxba_entries_per_subcrq = %lld\n", 2703 adapter->opt_rxba_entries_per_subcrq); 2704 break; 2705 case TX_RX_DESC_REQ: 2706 adapter->tx_rx_desc_req = crq->query_capability.number; 2707 netdev_dbg(netdev, "tx_rx_desc_req = %llx\n", 2708 adapter->tx_rx_desc_req); 2709 break; 2710 2711 default: 2712 netdev_err(netdev, "Got invalid cap rsp %d\n", 2713 crq->query_capability.capability); 2714 } 2715 2716 out: 2717 if (atomic_read(&adapter->running_cap_crqs) == 0) { 2718 adapter->wait_capability = false; 2719 init_sub_crqs(adapter, 0); 2720 /* We're done querying the capabilities, initialize sub-crqs */ 2721 } 2722 } 2723 2724 static void handle_control_ras_rsp(union ibmvnic_crq *crq, 2725 struct ibmvnic_adapter *adapter) 2726 { 2727 u8 correlator = crq->control_ras_rsp.correlator; 2728 struct device *dev = &adapter->vdev->dev; 2729 bool found = false; 2730 int i; 2731 2732 if (crq->control_ras_rsp.rc.code) { 2733 dev_warn(dev, "Control ras failed rc=%d\n", 2734 crq->control_ras_rsp.rc.code); 2735 return; 2736 } 2737 2738 for (i = 0; i < adapter->ras_comp_num; i++) { 2739 if (adapter->ras_comps[i].correlator == correlator) { 2740 found = true; 2741 break; 2742 } 2743 } 2744 2745 if (!found) { 2746 dev_warn(dev, "Correlator not found on control_ras_rsp\n"); 2747 return; 2748 } 2749 2750 switch (crq->control_ras_rsp.op) { 2751 case IBMVNIC_TRACE_LEVEL: 2752 adapter->ras_comps[i].trace_level = crq->control_ras.level; 2753 break; 2754 case IBMVNIC_ERROR_LEVEL: 2755 adapter->ras_comps[i].error_check_level = 2756 crq->control_ras.level; 2757 break; 2758 case IBMVNIC_TRACE_PAUSE: 2759 adapter->ras_comp_int[i].paused = 1; 2760 break; 2761 case IBMVNIC_TRACE_RESUME: 2762 adapter->ras_comp_int[i].paused = 0; 2763 break; 2764 case IBMVNIC_TRACE_ON: 2765 adapter->ras_comps[i].trace_on = 1; 2766 break; 2767 case IBMVNIC_TRACE_OFF: 2768 adapter->ras_comps[i].trace_on = 0; 2769 break; 2770 case IBMVNIC_CHG_TRACE_BUFF_SZ: 2771 /* trace_buff_sz is 3 bytes, stuff it into an int */ 2772 ((u8 *)(&adapter->ras_comps[i].trace_buff_size))[0] = 0; 2773 ((u8 *)(&adapter->ras_comps[i].trace_buff_size))[1] = 2774 crq->control_ras_rsp.trace_buff_sz[0]; 2775 ((u8 *)(&adapter->ras_comps[i].trace_buff_size))[2] = 2776 crq->control_ras_rsp.trace_buff_sz[1]; 2777 ((u8 *)(&adapter->ras_comps[i].trace_buff_size))[3] = 2778 crq->control_ras_rsp.trace_buff_sz[2]; 2779 break; 2780 default: 2781 dev_err(dev, "invalid op %d on control_ras_rsp", 2782 crq->control_ras_rsp.op); 2783 } 2784 } 2785 2786 static ssize_t trace_read(struct file *file, char __user *user_buf, size_t len, 2787 loff_t *ppos) 2788 { 2789 struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data; 2790 struct ibmvnic_adapter *adapter = ras_comp_int->adapter; 2791 struct device *dev = &adapter->vdev->dev; 2792 struct ibmvnic_fw_trace_entry *trace; 2793 int num = ras_comp_int->num; 2794 union ibmvnic_crq crq; 2795 dma_addr_t trace_tok; 2796 2797 if (*ppos >= be32_to_cpu(adapter->ras_comps[num].trace_buff_size)) 2798 return 0; 2799 2800 trace = 2801 dma_alloc_coherent(dev, 2802 be32_to_cpu(adapter->ras_comps[num]. 2803 trace_buff_size), &trace_tok, 2804 GFP_KERNEL); 2805 if (!trace) { 2806 dev_err(dev, "Couldn't alloc trace buffer\n"); 2807 return 0; 2808 } 2809 2810 memset(&crq, 0, sizeof(crq)); 2811 crq.collect_fw_trace.first = IBMVNIC_CRQ_CMD; 2812 crq.collect_fw_trace.cmd = COLLECT_FW_TRACE; 2813 crq.collect_fw_trace.correlator = adapter->ras_comps[num].correlator; 2814 crq.collect_fw_trace.ioba = cpu_to_be32(trace_tok); 2815 crq.collect_fw_trace.len = adapter->ras_comps[num].trace_buff_size; 2816 2817 init_completion(&adapter->fw_done); 2818 ibmvnic_send_crq(adapter, &crq); 2819 wait_for_completion(&adapter->fw_done); 2820 2821 if (*ppos + len > be32_to_cpu(adapter->ras_comps[num].trace_buff_size)) 2822 len = 2823 be32_to_cpu(adapter->ras_comps[num].trace_buff_size) - 2824 *ppos; 2825 2826 copy_to_user(user_buf, &((u8 *)trace)[*ppos], len); 2827 2828 dma_free_coherent(dev, 2829 be32_to_cpu(adapter->ras_comps[num].trace_buff_size), 2830 trace, trace_tok); 2831 *ppos += len; 2832 return len; 2833 } 2834 2835 static const struct file_operations trace_ops = { 2836 .owner = THIS_MODULE, 2837 .open = simple_open, 2838 .read = trace_read, 2839 }; 2840 2841 static ssize_t paused_read(struct file *file, char __user *user_buf, size_t len, 2842 loff_t *ppos) 2843 { 2844 struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data; 2845 struct ibmvnic_adapter *adapter = ras_comp_int->adapter; 2846 int num = ras_comp_int->num; 2847 char buff[5]; /* 1 or 0 plus \n and \0 */ 2848 int size; 2849 2850 size = sprintf(buff, "%d\n", adapter->ras_comp_int[num].paused); 2851 2852 if (*ppos >= size) 2853 return 0; 2854 2855 copy_to_user(user_buf, buff, size); 2856 *ppos += size; 2857 return size; 2858 } 2859 2860 static ssize_t paused_write(struct file *file, const char __user *user_buf, 2861 size_t len, loff_t *ppos) 2862 { 2863 struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data; 2864 struct ibmvnic_adapter *adapter = ras_comp_int->adapter; 2865 int num = ras_comp_int->num; 2866 union ibmvnic_crq crq; 2867 unsigned long val; 2868 char buff[9]; /* decimal max int plus \n and \0 */ 2869 2870 copy_from_user(buff, user_buf, sizeof(buff)); 2871 val = kstrtoul(buff, 10, NULL); 2872 2873 adapter->ras_comp_int[num].paused = val ? 1 : 0; 2874 2875 memset(&crq, 0, sizeof(crq)); 2876 crq.control_ras.first = IBMVNIC_CRQ_CMD; 2877 crq.control_ras.cmd = CONTROL_RAS; 2878 crq.control_ras.correlator = adapter->ras_comps[num].correlator; 2879 crq.control_ras.op = val ? IBMVNIC_TRACE_PAUSE : IBMVNIC_TRACE_RESUME; 2880 ibmvnic_send_crq(adapter, &crq); 2881 2882 return len; 2883 } 2884 2885 static const struct file_operations paused_ops = { 2886 .owner = THIS_MODULE, 2887 .open = simple_open, 2888 .read = paused_read, 2889 .write = paused_write, 2890 }; 2891 2892 static ssize_t tracing_read(struct file *file, char __user *user_buf, 2893 size_t len, loff_t *ppos) 2894 { 2895 struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data; 2896 struct ibmvnic_adapter *adapter = ras_comp_int->adapter; 2897 int num = ras_comp_int->num; 2898 char buff[5]; /* 1 or 0 plus \n and \0 */ 2899 int size; 2900 2901 size = sprintf(buff, "%d\n", adapter->ras_comps[num].trace_on); 2902 2903 if (*ppos >= size) 2904 return 0; 2905 2906 copy_to_user(user_buf, buff, size); 2907 *ppos += size; 2908 return size; 2909 } 2910 2911 static ssize_t tracing_write(struct file *file, const char __user *user_buf, 2912 size_t len, loff_t *ppos) 2913 { 2914 struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data; 2915 struct ibmvnic_adapter *adapter = ras_comp_int->adapter; 2916 int num = ras_comp_int->num; 2917 union ibmvnic_crq crq; 2918 unsigned long val; 2919 char buff[9]; /* decimal max int plus \n and \0 */ 2920 2921 copy_from_user(buff, user_buf, sizeof(buff)); 2922 val = kstrtoul(buff, 10, NULL); 2923 2924 memset(&crq, 0, sizeof(crq)); 2925 crq.control_ras.first = IBMVNIC_CRQ_CMD; 2926 crq.control_ras.cmd = CONTROL_RAS; 2927 crq.control_ras.correlator = adapter->ras_comps[num].correlator; 2928 crq.control_ras.op = val ? IBMVNIC_TRACE_ON : IBMVNIC_TRACE_OFF; 2929 2930 return len; 2931 } 2932 2933 static const struct file_operations tracing_ops = { 2934 .owner = THIS_MODULE, 2935 .open = simple_open, 2936 .read = tracing_read, 2937 .write = tracing_write, 2938 }; 2939 2940 static ssize_t error_level_read(struct file *file, char __user *user_buf, 2941 size_t len, loff_t *ppos) 2942 { 2943 struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data; 2944 struct ibmvnic_adapter *adapter = ras_comp_int->adapter; 2945 int num = ras_comp_int->num; 2946 char buff[5]; /* decimal max char plus \n and \0 */ 2947 int size; 2948 2949 size = sprintf(buff, "%d\n", adapter->ras_comps[num].error_check_level); 2950 2951 if (*ppos >= size) 2952 return 0; 2953 2954 copy_to_user(user_buf, buff, size); 2955 *ppos += size; 2956 return size; 2957 } 2958 2959 static ssize_t error_level_write(struct file *file, const char __user *user_buf, 2960 size_t len, loff_t *ppos) 2961 { 2962 struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data; 2963 struct ibmvnic_adapter *adapter = ras_comp_int->adapter; 2964 int num = ras_comp_int->num; 2965 union ibmvnic_crq crq; 2966 unsigned long val; 2967 char buff[9]; /* decimal max int plus \n and \0 */ 2968 2969 copy_from_user(buff, user_buf, sizeof(buff)); 2970 val = kstrtoul(buff, 10, NULL); 2971 2972 if (val > 9) 2973 val = 9; 2974 2975 memset(&crq, 0, sizeof(crq)); 2976 crq.control_ras.first = IBMVNIC_CRQ_CMD; 2977 crq.control_ras.cmd = CONTROL_RAS; 2978 crq.control_ras.correlator = adapter->ras_comps[num].correlator; 2979 crq.control_ras.op = IBMVNIC_ERROR_LEVEL; 2980 crq.control_ras.level = val; 2981 ibmvnic_send_crq(adapter, &crq); 2982 2983 return len; 2984 } 2985 2986 static const struct file_operations error_level_ops = { 2987 .owner = THIS_MODULE, 2988 .open = simple_open, 2989 .read = error_level_read, 2990 .write = error_level_write, 2991 }; 2992 2993 static ssize_t trace_level_read(struct file *file, char __user *user_buf, 2994 size_t len, loff_t *ppos) 2995 { 2996 struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data; 2997 struct ibmvnic_adapter *adapter = ras_comp_int->adapter; 2998 int num = ras_comp_int->num; 2999 char buff[5]; /* decimal max char plus \n and \0 */ 3000 int size; 3001 3002 size = sprintf(buff, "%d\n", adapter->ras_comps[num].trace_level); 3003 if (*ppos >= size) 3004 return 0; 3005 3006 copy_to_user(user_buf, buff, size); 3007 *ppos += size; 3008 return size; 3009 } 3010 3011 static ssize_t trace_level_write(struct file *file, const char __user *user_buf, 3012 size_t len, loff_t *ppos) 3013 { 3014 struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data; 3015 struct ibmvnic_adapter *adapter = ras_comp_int->adapter; 3016 union ibmvnic_crq crq; 3017 unsigned long val; 3018 char buff[9]; /* decimal max int plus \n and \0 */ 3019 3020 copy_from_user(buff, user_buf, sizeof(buff)); 3021 val = kstrtoul(buff, 10, NULL); 3022 if (val > 9) 3023 val = 9; 3024 3025 memset(&crq, 0, sizeof(crq)); 3026 crq.control_ras.first = IBMVNIC_CRQ_CMD; 3027 crq.control_ras.cmd = CONTROL_RAS; 3028 crq.control_ras.correlator = 3029 adapter->ras_comps[ras_comp_int->num].correlator; 3030 crq.control_ras.op = IBMVNIC_TRACE_LEVEL; 3031 crq.control_ras.level = val; 3032 ibmvnic_send_crq(adapter, &crq); 3033 3034 return len; 3035 } 3036 3037 static const struct file_operations trace_level_ops = { 3038 .owner = THIS_MODULE, 3039 .open = simple_open, 3040 .read = trace_level_read, 3041 .write = trace_level_write, 3042 }; 3043 3044 static ssize_t trace_buff_size_read(struct file *file, char __user *user_buf, 3045 size_t len, loff_t *ppos) 3046 { 3047 struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data; 3048 struct ibmvnic_adapter *adapter = ras_comp_int->adapter; 3049 int num = ras_comp_int->num; 3050 char buff[9]; /* decimal max int plus \n and \0 */ 3051 int size; 3052 3053 size = sprintf(buff, "%d\n", adapter->ras_comps[num].trace_buff_size); 3054 if (*ppos >= size) 3055 return 0; 3056 3057 copy_to_user(user_buf, buff, size); 3058 *ppos += size; 3059 return size; 3060 } 3061 3062 static ssize_t trace_buff_size_write(struct file *file, 3063 const char __user *user_buf, size_t len, 3064 loff_t *ppos) 3065 { 3066 struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data; 3067 struct ibmvnic_adapter *adapter = ras_comp_int->adapter; 3068 union ibmvnic_crq crq; 3069 unsigned long val; 3070 char buff[9]; /* decimal max int plus \n and \0 */ 3071 3072 copy_from_user(buff, user_buf, sizeof(buff)); 3073 val = kstrtoul(buff, 10, NULL); 3074 3075 memset(&crq, 0, sizeof(crq)); 3076 crq.control_ras.first = IBMVNIC_CRQ_CMD; 3077 crq.control_ras.cmd = CONTROL_RAS; 3078 crq.control_ras.correlator = 3079 adapter->ras_comps[ras_comp_int->num].correlator; 3080 crq.control_ras.op = IBMVNIC_CHG_TRACE_BUFF_SZ; 3081 /* trace_buff_sz is 3 bytes, stuff an int into it */ 3082 crq.control_ras.trace_buff_sz[0] = ((u8 *)(&val))[5]; 3083 crq.control_ras.trace_buff_sz[1] = ((u8 *)(&val))[6]; 3084 crq.control_ras.trace_buff_sz[2] = ((u8 *)(&val))[7]; 3085 ibmvnic_send_crq(adapter, &crq); 3086 3087 return len; 3088 } 3089 3090 static const struct file_operations trace_size_ops = { 3091 .owner = THIS_MODULE, 3092 .open = simple_open, 3093 .read = trace_buff_size_read, 3094 .write = trace_buff_size_write, 3095 }; 3096 3097 static void handle_request_ras_comps_rsp(union ibmvnic_crq *crq, 3098 struct ibmvnic_adapter *adapter) 3099 { 3100 struct device *dev = &adapter->vdev->dev; 3101 struct dentry *dir_ent; 3102 struct dentry *ent; 3103 int i; 3104 3105 debugfs_remove_recursive(adapter->ras_comps_ent); 3106 3107 adapter->ras_comps_ent = debugfs_create_dir("ras_comps", 3108 adapter->debugfs_dir); 3109 if (!adapter->ras_comps_ent || IS_ERR(adapter->ras_comps_ent)) { 3110 dev_info(dev, "debugfs create ras_comps dir failed\n"); 3111 return; 3112 } 3113 3114 for (i = 0; i < adapter->ras_comp_num; i++) { 3115 dir_ent = debugfs_create_dir(adapter->ras_comps[i].name, 3116 adapter->ras_comps_ent); 3117 if (!dir_ent || IS_ERR(dir_ent)) { 3118 dev_info(dev, "debugfs create %s dir failed\n", 3119 adapter->ras_comps[i].name); 3120 continue; 3121 } 3122 3123 adapter->ras_comp_int[i].adapter = adapter; 3124 adapter->ras_comp_int[i].num = i; 3125 adapter->ras_comp_int[i].desc_blob.data = 3126 &adapter->ras_comps[i].description; 3127 adapter->ras_comp_int[i].desc_blob.size = 3128 sizeof(adapter->ras_comps[i].description); 3129 3130 /* Don't need to remember the dentry's because the debugfs dir 3131 * gets removed recursively 3132 */ 3133 ent = debugfs_create_blob("description", S_IRUGO, dir_ent, 3134 &adapter->ras_comp_int[i].desc_blob); 3135 ent = debugfs_create_file("trace_buf_size", S_IRUGO | S_IWUSR, 3136 dir_ent, &adapter->ras_comp_int[i], 3137 &trace_size_ops); 3138 ent = debugfs_create_file("trace_level", 3139 S_IRUGO | 3140 (adapter->ras_comps[i].trace_level != 3141 0xFF ? S_IWUSR : 0), 3142 dir_ent, &adapter->ras_comp_int[i], 3143 &trace_level_ops); 3144 ent = debugfs_create_file("error_level", 3145 S_IRUGO | 3146 (adapter-> 3147 ras_comps[i].error_check_level != 3148 0xFF ? S_IWUSR : 0), 3149 dir_ent, &adapter->ras_comp_int[i], 3150 &trace_level_ops); 3151 ent = debugfs_create_file("tracing", S_IRUGO | S_IWUSR, 3152 dir_ent, &adapter->ras_comp_int[i], 3153 &tracing_ops); 3154 ent = debugfs_create_file("paused", S_IRUGO | S_IWUSR, 3155 dir_ent, &adapter->ras_comp_int[i], 3156 &paused_ops); 3157 ent = debugfs_create_file("trace", S_IRUGO, dir_ent, 3158 &adapter->ras_comp_int[i], 3159 &trace_ops); 3160 } 3161 } 3162 3163 static void handle_request_ras_comp_num_rsp(union ibmvnic_crq *crq, 3164 struct ibmvnic_adapter *adapter) 3165 { 3166 int len = adapter->ras_comp_num * sizeof(struct ibmvnic_fw_component); 3167 struct device *dev = &adapter->vdev->dev; 3168 union ibmvnic_crq newcrq; 3169 3170 adapter->ras_comps = dma_alloc_coherent(dev, len, 3171 &adapter->ras_comps_tok, 3172 GFP_KERNEL); 3173 if (!adapter->ras_comps) { 3174 if (!firmware_has_feature(FW_FEATURE_CMO)) 3175 dev_err(dev, "Couldn't alloc fw comps buffer\n"); 3176 return; 3177 } 3178 3179 adapter->ras_comp_int = kmalloc(adapter->ras_comp_num * 3180 sizeof(struct ibmvnic_fw_comp_internal), 3181 GFP_KERNEL); 3182 if (!adapter->ras_comp_int) 3183 dma_free_coherent(dev, len, adapter->ras_comps, 3184 adapter->ras_comps_tok); 3185 3186 memset(&newcrq, 0, sizeof(newcrq)); 3187 newcrq.request_ras_comps.first = IBMVNIC_CRQ_CMD; 3188 newcrq.request_ras_comps.cmd = REQUEST_RAS_COMPS; 3189 newcrq.request_ras_comps.ioba = cpu_to_be32(adapter->ras_comps_tok); 3190 newcrq.request_ras_comps.len = cpu_to_be32(len); 3191 ibmvnic_send_crq(adapter, &newcrq); 3192 } 3193 3194 static void ibmvnic_free_inflight(struct ibmvnic_adapter *adapter) 3195 { 3196 struct ibmvnic_inflight_cmd *inflight_cmd, *tmp1; 3197 struct device *dev = &adapter->vdev->dev; 3198 struct ibmvnic_error_buff *error_buff, *tmp2; 3199 unsigned long flags; 3200 unsigned long flags2; 3201 3202 spin_lock_irqsave(&adapter->inflight_lock, flags); 3203 list_for_each_entry_safe(inflight_cmd, tmp1, &adapter->inflight, list) { 3204 switch (inflight_cmd->crq.generic.cmd) { 3205 case LOGIN: 3206 dma_unmap_single(dev, adapter->login_buf_token, 3207 adapter->login_buf_sz, 3208 DMA_BIDIRECTIONAL); 3209 dma_unmap_single(dev, adapter->login_rsp_buf_token, 3210 adapter->login_rsp_buf_sz, 3211 DMA_BIDIRECTIONAL); 3212 kfree(adapter->login_rsp_buf); 3213 kfree(adapter->login_buf); 3214 break; 3215 case REQUEST_DUMP: 3216 complete(&adapter->fw_done); 3217 break; 3218 case REQUEST_ERROR_INFO: 3219 spin_lock_irqsave(&adapter->error_list_lock, flags2); 3220 list_for_each_entry_safe(error_buff, tmp2, 3221 &adapter->errors, list) { 3222 dma_unmap_single(dev, error_buff->dma, 3223 error_buff->len, 3224 DMA_FROM_DEVICE); 3225 kfree(error_buff->buff); 3226 list_del(&error_buff->list); 3227 kfree(error_buff); 3228 } 3229 spin_unlock_irqrestore(&adapter->error_list_lock, 3230 flags2); 3231 break; 3232 } 3233 list_del(&inflight_cmd->list); 3234 kfree(inflight_cmd); 3235 } 3236 spin_unlock_irqrestore(&adapter->inflight_lock, flags); 3237 } 3238 3239 static void ibmvnic_xport_event(struct work_struct *work) 3240 { 3241 struct ibmvnic_adapter *adapter = container_of(work, 3242 struct ibmvnic_adapter, 3243 ibmvnic_xport); 3244 struct device *dev = &adapter->vdev->dev; 3245 long rc; 3246 3247 ibmvnic_free_inflight(adapter); 3248 release_sub_crqs(adapter); 3249 if (adapter->migrated) { 3250 rc = ibmvnic_reenable_crq_queue(adapter); 3251 if (rc) 3252 dev_err(dev, "Error after enable rc=%ld\n", rc); 3253 adapter->migrated = false; 3254 rc = ibmvnic_send_crq_init(adapter); 3255 if (rc) 3256 dev_err(dev, "Error sending init rc=%ld\n", rc); 3257 } 3258 } 3259 3260 static void ibmvnic_handle_crq(union ibmvnic_crq *crq, 3261 struct ibmvnic_adapter *adapter) 3262 { 3263 struct ibmvnic_generic_crq *gen_crq = &crq->generic; 3264 struct net_device *netdev = adapter->netdev; 3265 struct device *dev = &adapter->vdev->dev; 3266 long rc; 3267 3268 netdev_dbg(netdev, "Handling CRQ: %016lx %016lx\n", 3269 ((unsigned long int *)crq)[0], 3270 ((unsigned long int *)crq)[1]); 3271 switch (gen_crq->first) { 3272 case IBMVNIC_CRQ_INIT_RSP: 3273 switch (gen_crq->cmd) { 3274 case IBMVNIC_CRQ_INIT: 3275 dev_info(dev, "Partner initialized\n"); 3276 /* Send back a response */ 3277 rc = ibmvnic_send_crq_init_complete(adapter); 3278 if (!rc) 3279 schedule_work(&adapter->vnic_crq_init); 3280 else 3281 dev_err(dev, "Can't send initrsp rc=%ld\n", rc); 3282 break; 3283 case IBMVNIC_CRQ_INIT_COMPLETE: 3284 dev_info(dev, "Partner initialization complete\n"); 3285 send_version_xchg(adapter); 3286 break; 3287 default: 3288 dev_err(dev, "Unknown crq cmd: %d\n", gen_crq->cmd); 3289 } 3290 return; 3291 case IBMVNIC_CRQ_XPORT_EVENT: 3292 if (gen_crq->cmd == IBMVNIC_PARTITION_MIGRATED) { 3293 dev_info(dev, "Re-enabling adapter\n"); 3294 adapter->migrated = true; 3295 schedule_work(&adapter->ibmvnic_xport); 3296 } else if (gen_crq->cmd == IBMVNIC_DEVICE_FAILOVER) { 3297 dev_info(dev, "Backing device failover detected\n"); 3298 netif_carrier_off(netdev); 3299 adapter->failover = true; 3300 } else { 3301 /* The adapter lost the connection */ 3302 dev_err(dev, "Virtual Adapter failed (rc=%d)\n", 3303 gen_crq->cmd); 3304 schedule_work(&adapter->ibmvnic_xport); 3305 } 3306 return; 3307 case IBMVNIC_CRQ_CMD_RSP: 3308 break; 3309 default: 3310 dev_err(dev, "Got an invalid msg type 0x%02x\n", 3311 gen_crq->first); 3312 return; 3313 } 3314 3315 switch (gen_crq->cmd) { 3316 case VERSION_EXCHANGE_RSP: 3317 rc = crq->version_exchange_rsp.rc.code; 3318 if (rc) { 3319 dev_err(dev, "Error %ld in VERSION_EXCHG_RSP\n", rc); 3320 break; 3321 } 3322 dev_info(dev, "Partner protocol version is %d\n", 3323 crq->version_exchange_rsp.version); 3324 if (be16_to_cpu(crq->version_exchange_rsp.version) < 3325 ibmvnic_version) 3326 ibmvnic_version = 3327 be16_to_cpu(crq->version_exchange_rsp.version); 3328 send_cap_queries(adapter); 3329 break; 3330 case QUERY_CAPABILITY_RSP: 3331 handle_query_cap_rsp(crq, adapter); 3332 break; 3333 case QUERY_MAP_RSP: 3334 handle_query_map_rsp(crq, adapter); 3335 break; 3336 case REQUEST_MAP_RSP: 3337 handle_request_map_rsp(crq, adapter); 3338 break; 3339 case REQUEST_UNMAP_RSP: 3340 handle_request_unmap_rsp(crq, adapter); 3341 break; 3342 case REQUEST_CAPABILITY_RSP: 3343 handle_request_cap_rsp(crq, adapter); 3344 break; 3345 case LOGIN_RSP: 3346 netdev_dbg(netdev, "Got Login Response\n"); 3347 handle_login_rsp(crq, adapter); 3348 break; 3349 case LOGICAL_LINK_STATE_RSP: 3350 netdev_dbg(netdev, "Got Logical Link State Response\n"); 3351 adapter->logical_link_state = 3352 crq->logical_link_state_rsp.link_state; 3353 break; 3354 case LINK_STATE_INDICATION: 3355 netdev_dbg(netdev, "Got Logical Link State Indication\n"); 3356 adapter->phys_link_state = 3357 crq->link_state_indication.phys_link_state; 3358 adapter->logical_link_state = 3359 crq->link_state_indication.logical_link_state; 3360 break; 3361 case CHANGE_MAC_ADDR_RSP: 3362 netdev_dbg(netdev, "Got MAC address change Response\n"); 3363 handle_change_mac_rsp(crq, adapter); 3364 break; 3365 case ERROR_INDICATION: 3366 netdev_dbg(netdev, "Got Error Indication\n"); 3367 handle_error_indication(crq, adapter); 3368 break; 3369 case REQUEST_ERROR_RSP: 3370 netdev_dbg(netdev, "Got Error Detail Response\n"); 3371 handle_error_info_rsp(crq, adapter); 3372 break; 3373 case REQUEST_STATISTICS_RSP: 3374 netdev_dbg(netdev, "Got Statistics Response\n"); 3375 complete(&adapter->stats_done); 3376 break; 3377 case REQUEST_DUMP_SIZE_RSP: 3378 netdev_dbg(netdev, "Got Request Dump Size Response\n"); 3379 handle_dump_size_rsp(crq, adapter); 3380 break; 3381 case REQUEST_DUMP_RSP: 3382 netdev_dbg(netdev, "Got Request Dump Response\n"); 3383 complete(&adapter->fw_done); 3384 break; 3385 case QUERY_IP_OFFLOAD_RSP: 3386 netdev_dbg(netdev, "Got Query IP offload Response\n"); 3387 handle_query_ip_offload_rsp(adapter); 3388 break; 3389 case MULTICAST_CTRL_RSP: 3390 netdev_dbg(netdev, "Got multicast control Response\n"); 3391 break; 3392 case CONTROL_IP_OFFLOAD_RSP: 3393 netdev_dbg(netdev, "Got Control IP offload Response\n"); 3394 dma_unmap_single(dev, adapter->ip_offload_ctrl_tok, 3395 sizeof(adapter->ip_offload_ctrl), 3396 DMA_TO_DEVICE); 3397 /* We're done with the queries, perform the login */ 3398 send_login(adapter); 3399 break; 3400 case REQUEST_RAS_COMP_NUM_RSP: 3401 netdev_dbg(netdev, "Got Request RAS Comp Num Response\n"); 3402 if (crq->request_ras_comp_num_rsp.rc.code == 10) { 3403 netdev_dbg(netdev, "Request RAS Comp Num not supported\n"); 3404 break; 3405 } 3406 adapter->ras_comp_num = 3407 be32_to_cpu(crq->request_ras_comp_num_rsp.num_components); 3408 handle_request_ras_comp_num_rsp(crq, adapter); 3409 break; 3410 case REQUEST_RAS_COMPS_RSP: 3411 netdev_dbg(netdev, "Got Request RAS Comps Response\n"); 3412 handle_request_ras_comps_rsp(crq, adapter); 3413 break; 3414 case CONTROL_RAS_RSP: 3415 netdev_dbg(netdev, "Got Control RAS Response\n"); 3416 handle_control_ras_rsp(crq, adapter); 3417 break; 3418 case COLLECT_FW_TRACE_RSP: 3419 netdev_dbg(netdev, "Got Collect firmware trace Response\n"); 3420 complete(&adapter->fw_done); 3421 break; 3422 default: 3423 netdev_err(netdev, "Got an invalid cmd type 0x%02x\n", 3424 gen_crq->cmd); 3425 } 3426 } 3427 3428 static irqreturn_t ibmvnic_interrupt(int irq, void *instance) 3429 { 3430 struct ibmvnic_adapter *adapter = instance; 3431 unsigned long flags; 3432 3433 spin_lock_irqsave(&adapter->crq.lock, flags); 3434 vio_disable_interrupts(adapter->vdev); 3435 tasklet_schedule(&adapter->tasklet); 3436 spin_unlock_irqrestore(&adapter->crq.lock, flags); 3437 return IRQ_HANDLED; 3438 } 3439 3440 static void ibmvnic_tasklet(void *data) 3441 { 3442 struct ibmvnic_adapter *adapter = data; 3443 struct ibmvnic_crq_queue *queue = &adapter->crq; 3444 struct vio_dev *vdev = adapter->vdev; 3445 union ibmvnic_crq *crq; 3446 unsigned long flags; 3447 bool done = false; 3448 3449 spin_lock_irqsave(&queue->lock, flags); 3450 vio_disable_interrupts(vdev); 3451 while (!done) { 3452 /* Pull all the valid messages off the CRQ */ 3453 while ((crq = ibmvnic_next_crq(adapter)) != NULL) { 3454 ibmvnic_handle_crq(crq, adapter); 3455 crq->generic.first = 0; 3456 } 3457 vio_enable_interrupts(vdev); 3458 crq = ibmvnic_next_crq(adapter); 3459 if (crq) { 3460 vio_disable_interrupts(vdev); 3461 ibmvnic_handle_crq(crq, adapter); 3462 crq->generic.first = 0; 3463 } else { 3464 /* remain in tasklet until all 3465 * capabilities responses are received 3466 */ 3467 if (!adapter->wait_capability) 3468 done = true; 3469 } 3470 } 3471 /* if capabilities CRQ's were sent in this tasklet, the following 3472 * tasklet must wait until all responses are received 3473 */ 3474 if (atomic_read(&adapter->running_cap_crqs) != 0) 3475 adapter->wait_capability = true; 3476 spin_unlock_irqrestore(&queue->lock, flags); 3477 } 3478 3479 static int ibmvnic_reenable_crq_queue(struct ibmvnic_adapter *adapter) 3480 { 3481 struct vio_dev *vdev = adapter->vdev; 3482 int rc; 3483 3484 do { 3485 rc = plpar_hcall_norets(H_ENABLE_CRQ, vdev->unit_address); 3486 } while (rc == H_IN_PROGRESS || rc == H_BUSY || H_IS_LONG_BUSY(rc)); 3487 3488 if (rc) 3489 dev_err(&vdev->dev, "Error enabling adapter (rc=%d)\n", rc); 3490 3491 return rc; 3492 } 3493 3494 static int ibmvnic_reset_crq(struct ibmvnic_adapter *adapter) 3495 { 3496 struct ibmvnic_crq_queue *crq = &adapter->crq; 3497 struct device *dev = &adapter->vdev->dev; 3498 struct vio_dev *vdev = adapter->vdev; 3499 int rc; 3500 3501 /* Close the CRQ */ 3502 do { 3503 rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address); 3504 } while (rc == H_BUSY || H_IS_LONG_BUSY(rc)); 3505 3506 /* Clean out the queue */ 3507 memset(crq->msgs, 0, PAGE_SIZE); 3508 crq->cur = 0; 3509 3510 /* And re-open it again */ 3511 rc = plpar_hcall_norets(H_REG_CRQ, vdev->unit_address, 3512 crq->msg_token, PAGE_SIZE); 3513 3514 if (rc == H_CLOSED) 3515 /* Adapter is good, but other end is not ready */ 3516 dev_warn(dev, "Partner adapter not ready\n"); 3517 else if (rc != 0) 3518 dev_warn(dev, "Couldn't register crq (rc=%d)\n", rc); 3519 3520 return rc; 3521 } 3522 3523 static void ibmvnic_release_crq_queue(struct ibmvnic_adapter *adapter) 3524 { 3525 struct ibmvnic_crq_queue *crq = &adapter->crq; 3526 struct vio_dev *vdev = adapter->vdev; 3527 long rc; 3528 3529 netdev_dbg(adapter->netdev, "Releasing CRQ\n"); 3530 free_irq(vdev->irq, adapter); 3531 tasklet_kill(&adapter->tasklet); 3532 do { 3533 rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address); 3534 } while (rc == H_BUSY || H_IS_LONG_BUSY(rc)); 3535 3536 dma_unmap_single(&vdev->dev, crq->msg_token, PAGE_SIZE, 3537 DMA_BIDIRECTIONAL); 3538 free_page((unsigned long)crq->msgs); 3539 } 3540 3541 static int ibmvnic_init_crq_queue(struct ibmvnic_adapter *adapter) 3542 { 3543 struct ibmvnic_crq_queue *crq = &adapter->crq; 3544 struct device *dev = &adapter->vdev->dev; 3545 struct vio_dev *vdev = adapter->vdev; 3546 int rc, retrc = -ENOMEM; 3547 3548 crq->msgs = (union ibmvnic_crq *)get_zeroed_page(GFP_KERNEL); 3549 /* Should we allocate more than one page? */ 3550 3551 if (!crq->msgs) 3552 return -ENOMEM; 3553 3554 crq->size = PAGE_SIZE / sizeof(*crq->msgs); 3555 crq->msg_token = dma_map_single(dev, crq->msgs, PAGE_SIZE, 3556 DMA_BIDIRECTIONAL); 3557 if (dma_mapping_error(dev, crq->msg_token)) 3558 goto map_failed; 3559 3560 rc = plpar_hcall_norets(H_REG_CRQ, vdev->unit_address, 3561 crq->msg_token, PAGE_SIZE); 3562 3563 if (rc == H_RESOURCE) 3564 /* maybe kexecing and resource is busy. try a reset */ 3565 rc = ibmvnic_reset_crq(adapter); 3566 retrc = rc; 3567 3568 if (rc == H_CLOSED) { 3569 dev_warn(dev, "Partner adapter not ready\n"); 3570 } else if (rc) { 3571 dev_warn(dev, "Error %d opening adapter\n", rc); 3572 goto reg_crq_failed; 3573 } 3574 3575 retrc = 0; 3576 3577 tasklet_init(&adapter->tasklet, (void *)ibmvnic_tasklet, 3578 (unsigned long)adapter); 3579 3580 netdev_dbg(adapter->netdev, "registering irq 0x%x\n", vdev->irq); 3581 rc = request_irq(vdev->irq, ibmvnic_interrupt, 0, IBMVNIC_NAME, 3582 adapter); 3583 if (rc) { 3584 dev_err(dev, "Couldn't register irq 0x%x. rc=%d\n", 3585 vdev->irq, rc); 3586 goto req_irq_failed; 3587 } 3588 3589 rc = vio_enable_interrupts(vdev); 3590 if (rc) { 3591 dev_err(dev, "Error %d enabling interrupts\n", rc); 3592 goto req_irq_failed; 3593 } 3594 3595 crq->cur = 0; 3596 spin_lock_init(&crq->lock); 3597 3598 return retrc; 3599 3600 req_irq_failed: 3601 tasklet_kill(&adapter->tasklet); 3602 do { 3603 rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address); 3604 } while (rc == H_BUSY || H_IS_LONG_BUSY(rc)); 3605 reg_crq_failed: 3606 dma_unmap_single(dev, crq->msg_token, PAGE_SIZE, DMA_BIDIRECTIONAL); 3607 map_failed: 3608 free_page((unsigned long)crq->msgs); 3609 return retrc; 3610 } 3611 3612 /* debugfs for dump */ 3613 static int ibmvnic_dump_show(struct seq_file *seq, void *v) 3614 { 3615 struct net_device *netdev = seq->private; 3616 struct ibmvnic_adapter *adapter = netdev_priv(netdev); 3617 struct device *dev = &adapter->vdev->dev; 3618 union ibmvnic_crq crq; 3619 3620 memset(&crq, 0, sizeof(crq)); 3621 crq.request_dump_size.first = IBMVNIC_CRQ_CMD; 3622 crq.request_dump_size.cmd = REQUEST_DUMP_SIZE; 3623 3624 init_completion(&adapter->fw_done); 3625 ibmvnic_send_crq(adapter, &crq); 3626 wait_for_completion(&adapter->fw_done); 3627 3628 seq_write(seq, adapter->dump_data, adapter->dump_data_size); 3629 3630 dma_unmap_single(dev, adapter->dump_data_token, adapter->dump_data_size, 3631 DMA_BIDIRECTIONAL); 3632 3633 kfree(adapter->dump_data); 3634 3635 return 0; 3636 } 3637 3638 static int ibmvnic_dump_open(struct inode *inode, struct file *file) 3639 { 3640 return single_open(file, ibmvnic_dump_show, inode->i_private); 3641 } 3642 3643 static const struct file_operations ibmvnic_dump_ops = { 3644 .owner = THIS_MODULE, 3645 .open = ibmvnic_dump_open, 3646 .read = seq_read, 3647 .llseek = seq_lseek, 3648 .release = single_release, 3649 }; 3650 3651 static void handle_crq_init_rsp(struct work_struct *work) 3652 { 3653 struct ibmvnic_adapter *adapter = container_of(work, 3654 struct ibmvnic_adapter, 3655 vnic_crq_init); 3656 struct device *dev = &adapter->vdev->dev; 3657 struct net_device *netdev = adapter->netdev; 3658 unsigned long timeout = msecs_to_jiffies(30000); 3659 bool restart = false; 3660 int rc; 3661 3662 if (adapter->failover) { 3663 release_sub_crqs(adapter); 3664 if (netif_running(netdev)) { 3665 netif_tx_disable(netdev); 3666 ibmvnic_close(netdev); 3667 restart = true; 3668 } 3669 } 3670 3671 reinit_completion(&adapter->init_done); 3672 send_version_xchg(adapter); 3673 if (!wait_for_completion_timeout(&adapter->init_done, timeout)) { 3674 dev_err(dev, "Passive init timeout\n"); 3675 goto task_failed; 3676 } 3677 3678 do { 3679 if (adapter->renegotiate) { 3680 adapter->renegotiate = false; 3681 release_sub_crqs_no_irqs(adapter); 3682 3683 reinit_completion(&adapter->init_done); 3684 send_cap_queries(adapter); 3685 if (!wait_for_completion_timeout(&adapter->init_done, 3686 timeout)) { 3687 dev_err(dev, "Passive init timeout\n"); 3688 goto task_failed; 3689 } 3690 } 3691 } while (adapter->renegotiate); 3692 rc = init_sub_crq_irqs(adapter); 3693 3694 if (rc) 3695 goto task_failed; 3696 3697 netdev->real_num_tx_queues = adapter->req_tx_queues; 3698 netdev->mtu = adapter->req_mtu - ETH_HLEN; 3699 3700 if (adapter->failover) { 3701 adapter->failover = false; 3702 if (restart) { 3703 rc = ibmvnic_open(netdev); 3704 if (rc) 3705 goto restart_failed; 3706 } 3707 netif_carrier_on(netdev); 3708 return; 3709 } 3710 3711 rc = register_netdev(netdev); 3712 if (rc) { 3713 dev_err(dev, 3714 "failed to register netdev rc=%d\n", rc); 3715 goto register_failed; 3716 } 3717 dev_info(dev, "ibmvnic registered\n"); 3718 3719 return; 3720 3721 restart_failed: 3722 dev_err(dev, "Failed to restart ibmvnic, rc=%d\n", rc); 3723 register_failed: 3724 release_sub_crqs(adapter); 3725 task_failed: 3726 dev_err(dev, "Passive initialization was not successful\n"); 3727 } 3728 3729 static int ibmvnic_probe(struct vio_dev *dev, const struct vio_device_id *id) 3730 { 3731 unsigned long timeout = msecs_to_jiffies(30000); 3732 struct ibmvnic_adapter *adapter; 3733 struct net_device *netdev; 3734 unsigned char *mac_addr_p; 3735 struct dentry *ent; 3736 char buf[17]; /* debugfs name buf */ 3737 int rc; 3738 3739 dev_dbg(&dev->dev, "entering ibmvnic_probe for UA 0x%x\n", 3740 dev->unit_address); 3741 3742 mac_addr_p = (unsigned char *)vio_get_attribute(dev, 3743 VETH_MAC_ADDR, NULL); 3744 if (!mac_addr_p) { 3745 dev_err(&dev->dev, 3746 "(%s:%3.3d) ERROR: Can't find MAC_ADDR attribute\n", 3747 __FILE__, __LINE__); 3748 return 0; 3749 } 3750 3751 netdev = alloc_etherdev_mq(sizeof(struct ibmvnic_adapter), 3752 IBMVNIC_MAX_TX_QUEUES); 3753 if (!netdev) 3754 return -ENOMEM; 3755 3756 adapter = netdev_priv(netdev); 3757 dev_set_drvdata(&dev->dev, netdev); 3758 adapter->vdev = dev; 3759 adapter->netdev = netdev; 3760 adapter->failover = false; 3761 3762 ether_addr_copy(adapter->mac_addr, mac_addr_p); 3763 ether_addr_copy(netdev->dev_addr, adapter->mac_addr); 3764 netdev->irq = dev->irq; 3765 netdev->netdev_ops = &ibmvnic_netdev_ops; 3766 netdev->ethtool_ops = &ibmvnic_ethtool_ops; 3767 SET_NETDEV_DEV(netdev, &dev->dev); 3768 3769 INIT_WORK(&adapter->vnic_crq_init, handle_crq_init_rsp); 3770 INIT_WORK(&adapter->ibmvnic_xport, ibmvnic_xport_event); 3771 3772 spin_lock_init(&adapter->stats_lock); 3773 3774 rc = ibmvnic_init_crq_queue(adapter); 3775 if (rc) { 3776 dev_err(&dev->dev, "Couldn't initialize crq. rc=%d\n", rc); 3777 goto free_netdev; 3778 } 3779 3780 INIT_LIST_HEAD(&adapter->errors); 3781 INIT_LIST_HEAD(&adapter->inflight); 3782 spin_lock_init(&adapter->error_list_lock); 3783 spin_lock_init(&adapter->inflight_lock); 3784 3785 adapter->stats_token = dma_map_single(&dev->dev, &adapter->stats, 3786 sizeof(struct ibmvnic_statistics), 3787 DMA_FROM_DEVICE); 3788 if (dma_mapping_error(&dev->dev, adapter->stats_token)) { 3789 if (!firmware_has_feature(FW_FEATURE_CMO)) 3790 dev_err(&dev->dev, "Couldn't map stats buffer\n"); 3791 rc = -ENOMEM; 3792 goto free_crq; 3793 } 3794 3795 snprintf(buf, sizeof(buf), "ibmvnic_%x", dev->unit_address); 3796 ent = debugfs_create_dir(buf, NULL); 3797 if (!ent || IS_ERR(ent)) { 3798 dev_info(&dev->dev, "debugfs create directory failed\n"); 3799 adapter->debugfs_dir = NULL; 3800 } else { 3801 adapter->debugfs_dir = ent; 3802 ent = debugfs_create_file("dump", S_IRUGO, adapter->debugfs_dir, 3803 netdev, &ibmvnic_dump_ops); 3804 if (!ent || IS_ERR(ent)) { 3805 dev_info(&dev->dev, 3806 "debugfs create dump file failed\n"); 3807 adapter->debugfs_dump = NULL; 3808 } else { 3809 adapter->debugfs_dump = ent; 3810 } 3811 } 3812 3813 init_completion(&adapter->init_done); 3814 ibmvnic_send_crq_init(adapter); 3815 if (!wait_for_completion_timeout(&adapter->init_done, timeout)) 3816 return 0; 3817 3818 do { 3819 if (adapter->renegotiate) { 3820 adapter->renegotiate = false; 3821 release_sub_crqs_no_irqs(adapter); 3822 3823 reinit_completion(&adapter->init_done); 3824 send_cap_queries(adapter); 3825 if (!wait_for_completion_timeout(&adapter->init_done, 3826 timeout)) 3827 return 0; 3828 } 3829 } while (adapter->renegotiate); 3830 3831 rc = init_sub_crq_irqs(adapter); 3832 if (rc) { 3833 dev_err(&dev->dev, "failed to initialize sub crq irqs\n"); 3834 goto free_debugfs; 3835 } 3836 3837 netdev->real_num_tx_queues = adapter->req_tx_queues; 3838 netdev->mtu = adapter->req_mtu - ETH_HLEN; 3839 3840 rc = register_netdev(netdev); 3841 if (rc) { 3842 dev_err(&dev->dev, "failed to register netdev rc=%d\n", rc); 3843 goto free_sub_crqs; 3844 } 3845 dev_info(&dev->dev, "ibmvnic registered\n"); 3846 3847 return 0; 3848 3849 free_sub_crqs: 3850 release_sub_crqs(adapter); 3851 free_debugfs: 3852 if (adapter->debugfs_dir && !IS_ERR(adapter->debugfs_dir)) 3853 debugfs_remove_recursive(adapter->debugfs_dir); 3854 free_crq: 3855 ibmvnic_release_crq_queue(adapter); 3856 free_netdev: 3857 free_netdev(netdev); 3858 return rc; 3859 } 3860 3861 static int ibmvnic_remove(struct vio_dev *dev) 3862 { 3863 struct net_device *netdev = dev_get_drvdata(&dev->dev); 3864 struct ibmvnic_adapter *adapter = netdev_priv(netdev); 3865 3866 unregister_netdev(netdev); 3867 3868 release_sub_crqs(adapter); 3869 3870 ibmvnic_release_crq_queue(adapter); 3871 3872 if (adapter->debugfs_dir && !IS_ERR(adapter->debugfs_dir)) 3873 debugfs_remove_recursive(adapter->debugfs_dir); 3874 3875 dma_unmap_single(&dev->dev, adapter->stats_token, 3876 sizeof(struct ibmvnic_statistics), DMA_FROM_DEVICE); 3877 3878 if (adapter->ras_comps) 3879 dma_free_coherent(&dev->dev, 3880 adapter->ras_comp_num * 3881 sizeof(struct ibmvnic_fw_component), 3882 adapter->ras_comps, adapter->ras_comps_tok); 3883 3884 kfree(adapter->ras_comp_int); 3885 3886 free_netdev(netdev); 3887 dev_set_drvdata(&dev->dev, NULL); 3888 3889 return 0; 3890 } 3891 3892 static unsigned long ibmvnic_get_desired_dma(struct vio_dev *vdev) 3893 { 3894 struct net_device *netdev = dev_get_drvdata(&vdev->dev); 3895 struct ibmvnic_adapter *adapter; 3896 struct iommu_table *tbl; 3897 unsigned long ret = 0; 3898 int i; 3899 3900 tbl = get_iommu_table_base(&vdev->dev); 3901 3902 /* netdev inits at probe time along with the structures we need below*/ 3903 if (!netdev) 3904 return IOMMU_PAGE_ALIGN(IBMVNIC_IO_ENTITLEMENT_DEFAULT, tbl); 3905 3906 adapter = netdev_priv(netdev); 3907 3908 ret += PAGE_SIZE; /* the crq message queue */ 3909 ret += adapter->bounce_buffer_size; 3910 ret += IOMMU_PAGE_ALIGN(sizeof(struct ibmvnic_statistics), tbl); 3911 3912 for (i = 0; i < adapter->req_tx_queues + adapter->req_rx_queues; i++) 3913 ret += 4 * PAGE_SIZE; /* the scrq message queue */ 3914 3915 for (i = 0; i < be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs); 3916 i++) 3917 ret += adapter->rx_pool[i].size * 3918 IOMMU_PAGE_ALIGN(adapter->rx_pool[i].buff_size, tbl); 3919 3920 return ret; 3921 } 3922 3923 static int ibmvnic_resume(struct device *dev) 3924 { 3925 struct net_device *netdev = dev_get_drvdata(dev); 3926 struct ibmvnic_adapter *adapter = netdev_priv(netdev); 3927 int i; 3928 3929 /* kick the interrupt handlers just in case we lost an interrupt */ 3930 for (i = 0; i < adapter->req_rx_queues; i++) 3931 ibmvnic_interrupt_rx(adapter->rx_scrq[i]->irq, 3932 adapter->rx_scrq[i]); 3933 3934 return 0; 3935 } 3936 3937 static struct vio_device_id ibmvnic_device_table[] = { 3938 {"network", "IBM,vnic"}, 3939 {"", "" } 3940 }; 3941 MODULE_DEVICE_TABLE(vio, ibmvnic_device_table); 3942 3943 static const struct dev_pm_ops ibmvnic_pm_ops = { 3944 .resume = ibmvnic_resume 3945 }; 3946 3947 static struct vio_driver ibmvnic_driver = { 3948 .id_table = ibmvnic_device_table, 3949 .probe = ibmvnic_probe, 3950 .remove = ibmvnic_remove, 3951 .get_desired_dma = ibmvnic_get_desired_dma, 3952 .name = ibmvnic_driver_name, 3953 .pm = &ibmvnic_pm_ops, 3954 }; 3955 3956 /* module functions */ 3957 static int __init ibmvnic_module_init(void) 3958 { 3959 pr_info("%s: %s %s\n", ibmvnic_driver_name, ibmvnic_driver_string, 3960 IBMVNIC_DRIVER_VERSION); 3961 3962 return vio_register_driver(&ibmvnic_driver); 3963 } 3964 3965 static void __exit ibmvnic_module_exit(void) 3966 { 3967 vio_unregister_driver(&ibmvnic_driver); 3968 } 3969 3970 module_init(ibmvnic_module_init); 3971 module_exit(ibmvnic_module_exit); 3972