1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Adaptec AAC series RAID controller driver 4 * (c) Copyright 2001 Red Hat Inc. 5 * 6 * based on the old aacraid driver that is.. 7 * Adaptec aacraid device driver for Linux. 8 * 9 * Copyright (c) 2000-2010 Adaptec, Inc. 10 * 2010-2015 PMC-Sierra, Inc. (aacraid@pmc-sierra.com) 11 * 2016-2017 Microsemi Corp. (aacraid@microsemi.com) 12 * 13 * Module Name: 14 * commsup.c 15 * 16 * Abstract: Contain all routines that are required for FSA host/adapter 17 * communication. 18 */ 19 20 #include <linux/kernel.h> 21 #include <linux/init.h> 22 #include <linux/crash_dump.h> 23 #include <linux/types.h> 24 #include <linux/sched.h> 25 #include <linux/pci.h> 26 #include <linux/spinlock.h> 27 #include <linux/slab.h> 28 #include <linux/completion.h> 29 #include <linux/blkdev.h> 30 #include <linux/delay.h> 31 #include <linux/kthread.h> 32 #include <linux/interrupt.h> 33 #include <linux/bcd.h> 34 #include <scsi/scsi.h> 35 #include <scsi/scsi_host.h> 36 #include <scsi/scsi_device.h> 37 #include <scsi/scsi_cmnd.h> 38 39 #include "aacraid.h" 40 41 /** 42 * fib_map_alloc - allocate the fib objects 43 * @dev: Adapter to allocate for 44 * 45 * Allocate and map the shared PCI space for the FIB blocks used to 46 * talk to the Adaptec firmware. 47 */ 48 49 static int fib_map_alloc(struct aac_dev *dev) 50 { 51 if (dev->max_fib_size > AAC_MAX_NATIVE_SIZE) 52 dev->max_cmd_size = AAC_MAX_NATIVE_SIZE; 53 else 54 dev->max_cmd_size = dev->max_fib_size; 55 if (dev->max_fib_size < AAC_MAX_NATIVE_SIZE) { 56 dev->max_cmd_size = AAC_MAX_NATIVE_SIZE; 57 } else { 58 dev->max_cmd_size = dev->max_fib_size; 59 } 60 61 dprintk((KERN_INFO 62 "allocate hardware fibs dma_alloc_coherent(%p, %d * (%d + %d), %p)\n", 63 &dev->pdev->dev, dev->max_cmd_size, dev->scsi_host_ptr->can_queue, 64 AAC_NUM_MGT_FIB, &dev->hw_fib_pa)); 65 dev->hw_fib_va = dma_alloc_coherent(&dev->pdev->dev, 66 (dev->max_cmd_size + sizeof(struct aac_fib_xporthdr)) 67 * (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB) + (ALIGN32 - 1), 68 &dev->hw_fib_pa, GFP_KERNEL); 69 if (dev->hw_fib_va == NULL) 70 return -ENOMEM; 71 return 0; 72 } 73 74 /** 75 * aac_fib_map_free - free the fib objects 76 * @dev: Adapter to free 77 * 78 * Free the PCI mappings and the memory allocated for FIB blocks 79 * on this adapter. 80 */ 81 82 void aac_fib_map_free(struct aac_dev *dev) 83 { 84 size_t alloc_size; 85 size_t fib_size; 86 int num_fibs; 87 88 if(!dev->hw_fib_va || !dev->max_cmd_size) 89 return; 90 91 num_fibs = dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB; 92 fib_size = dev->max_fib_size + sizeof(struct aac_fib_xporthdr); 93 alloc_size = fib_size * num_fibs + ALIGN32 - 1; 94 95 dma_free_coherent(&dev->pdev->dev, alloc_size, dev->hw_fib_va, 96 dev->hw_fib_pa); 97 98 dev->hw_fib_va = NULL; 99 dev->hw_fib_pa = 0; 100 } 101 102 void aac_fib_vector_assign(struct aac_dev *dev) 103 { 104 u32 i = 0; 105 u32 vector = 1; 106 struct fib *fibptr = NULL; 107 108 for (i = 0, fibptr = &dev->fibs[i]; 109 i < (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB); 110 i++, fibptr++) { 111 if ((dev->max_msix == 1) || 112 (i > ((dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB - 1) 113 - dev->vector_cap))) { 114 fibptr->vector_no = 0; 115 } else { 116 fibptr->vector_no = vector; 117 vector++; 118 if (vector == dev->max_msix) 119 vector = 1; 120 } 121 } 122 } 123 124 /** 125 * aac_fib_setup - setup the fibs 126 * @dev: Adapter to set up 127 * 128 * Allocate the PCI space for the fibs, map it and then initialise the 129 * fib area, the unmapped fib data and also the free list 130 */ 131 132 int aac_fib_setup(struct aac_dev * dev) 133 { 134 struct fib *fibptr; 135 struct hw_fib *hw_fib; 136 dma_addr_t hw_fib_pa; 137 int i; 138 u32 max_cmds; 139 140 while (((i = fib_map_alloc(dev)) == -ENOMEM) 141 && (dev->scsi_host_ptr->can_queue > (64 - AAC_NUM_MGT_FIB))) { 142 max_cmds = (dev->scsi_host_ptr->can_queue+AAC_NUM_MGT_FIB) >> 1; 143 dev->scsi_host_ptr->can_queue = max_cmds - AAC_NUM_MGT_FIB; 144 if (dev->comm_interface != AAC_COMM_MESSAGE_TYPE3) 145 dev->init->r7.max_io_commands = cpu_to_le32(max_cmds); 146 } 147 if (i<0) 148 return -ENOMEM; 149 150 memset(dev->hw_fib_va, 0, 151 (dev->max_cmd_size + sizeof(struct aac_fib_xporthdr)) * 152 (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB)); 153 154 /* 32 byte alignment for PMC */ 155 hw_fib_pa = (dev->hw_fib_pa + (ALIGN32 - 1)) & ~(ALIGN32 - 1); 156 hw_fib = (struct hw_fib *)((unsigned char *)dev->hw_fib_va + 157 (hw_fib_pa - dev->hw_fib_pa)); 158 159 /* add Xport header */ 160 hw_fib = (struct hw_fib *)((unsigned char *)hw_fib + 161 sizeof(struct aac_fib_xporthdr)); 162 hw_fib_pa += sizeof(struct aac_fib_xporthdr); 163 164 /* 165 * Initialise the fibs 166 */ 167 for (i = 0, fibptr = &dev->fibs[i]; 168 i < (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB); 169 i++, fibptr++) 170 { 171 fibptr->flags = 0; 172 fibptr->size = sizeof(struct fib); 173 fibptr->dev = dev; 174 fibptr->hw_fib_va = hw_fib; 175 fibptr->data = (void *) fibptr->hw_fib_va->data; 176 fibptr->next = fibptr+1; /* Forward chain the fibs */ 177 init_completion(&fibptr->event_wait); 178 spin_lock_init(&fibptr->event_lock); 179 hw_fib->header.XferState = cpu_to_le32(0xffffffff); 180 hw_fib->header.SenderSize = 181 cpu_to_le16(dev->max_fib_size); /* ?? max_cmd_size */ 182 fibptr->hw_fib_pa = hw_fib_pa; 183 fibptr->hw_sgl_pa = hw_fib_pa + 184 offsetof(struct aac_hba_cmd_req, sge[2]); 185 /* 186 * one element is for the ptr to the separate sg list, 187 * second element for 32 byte alignment 188 */ 189 fibptr->hw_error_pa = hw_fib_pa + 190 offsetof(struct aac_native_hba, resp.resp_bytes[0]); 191 192 hw_fib = (struct hw_fib *)((unsigned char *)hw_fib + 193 dev->max_cmd_size + sizeof(struct aac_fib_xporthdr)); 194 hw_fib_pa = hw_fib_pa + 195 dev->max_cmd_size + sizeof(struct aac_fib_xporthdr); 196 } 197 198 /* 199 *Assign vector numbers to fibs 200 */ 201 aac_fib_vector_assign(dev); 202 203 /* 204 * Add the fib chain to the free list 205 */ 206 dev->fibs[dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB - 1].next = NULL; 207 /* 208 * Set 8 fibs aside for management tools 209 */ 210 dev->free_fib = &dev->fibs[dev->scsi_host_ptr->can_queue]; 211 return 0; 212 } 213 214 /** 215 * aac_fib_alloc_tag-allocate a fib using tags 216 * @dev: Adapter to allocate the fib for 217 * 218 * Allocate a fib from the adapter fib pool using tags 219 * from the blk layer. 220 */ 221 222 struct fib *aac_fib_alloc_tag(struct aac_dev *dev, struct scsi_cmnd *scmd) 223 { 224 struct fib *fibptr; 225 226 fibptr = &dev->fibs[scmd->request->tag]; 227 /* 228 * Null out fields that depend on being zero at the start of 229 * each I/O 230 */ 231 fibptr->hw_fib_va->header.XferState = 0; 232 fibptr->type = FSAFS_NTC_FIB_CONTEXT; 233 fibptr->callback_data = NULL; 234 fibptr->callback = NULL; 235 fibptr->flags = 0; 236 237 return fibptr; 238 } 239 240 /** 241 * aac_fib_alloc - allocate a fib 242 * @dev: Adapter to allocate the fib for 243 * 244 * Allocate a fib from the adapter fib pool. If the pool is empty we 245 * return NULL. 246 */ 247 248 struct fib *aac_fib_alloc(struct aac_dev *dev) 249 { 250 struct fib * fibptr; 251 unsigned long flags; 252 spin_lock_irqsave(&dev->fib_lock, flags); 253 fibptr = dev->free_fib; 254 if(!fibptr){ 255 spin_unlock_irqrestore(&dev->fib_lock, flags); 256 return fibptr; 257 } 258 dev->free_fib = fibptr->next; 259 spin_unlock_irqrestore(&dev->fib_lock, flags); 260 /* 261 * Set the proper node type code and node byte size 262 */ 263 fibptr->type = FSAFS_NTC_FIB_CONTEXT; 264 fibptr->size = sizeof(struct fib); 265 /* 266 * Null out fields that depend on being zero at the start of 267 * each I/O 268 */ 269 fibptr->hw_fib_va->header.XferState = 0; 270 fibptr->flags = 0; 271 fibptr->callback = NULL; 272 fibptr->callback_data = NULL; 273 274 return fibptr; 275 } 276 277 /** 278 * aac_fib_free - free a fib 279 * @fibptr: fib to free up 280 * 281 * Frees up a fib and places it on the appropriate queue 282 */ 283 284 void aac_fib_free(struct fib *fibptr) 285 { 286 unsigned long flags; 287 288 if (fibptr->done == 2) 289 return; 290 291 spin_lock_irqsave(&fibptr->dev->fib_lock, flags); 292 if (unlikely(fibptr->flags & FIB_CONTEXT_FLAG_TIMED_OUT)) 293 aac_config.fib_timeouts++; 294 if (!(fibptr->flags & FIB_CONTEXT_FLAG_NATIVE_HBA) && 295 fibptr->hw_fib_va->header.XferState != 0) { 296 printk(KERN_WARNING "aac_fib_free, XferState != 0, fibptr = 0x%p, XferState = 0x%x\n", 297 (void*)fibptr, 298 le32_to_cpu(fibptr->hw_fib_va->header.XferState)); 299 } 300 fibptr->next = fibptr->dev->free_fib; 301 fibptr->dev->free_fib = fibptr; 302 spin_unlock_irqrestore(&fibptr->dev->fib_lock, flags); 303 } 304 305 /** 306 * aac_fib_init - initialise a fib 307 * @fibptr: The fib to initialize 308 * 309 * Set up the generic fib fields ready for use 310 */ 311 312 void aac_fib_init(struct fib *fibptr) 313 { 314 struct hw_fib *hw_fib = fibptr->hw_fib_va; 315 316 memset(&hw_fib->header, 0, sizeof(struct aac_fibhdr)); 317 hw_fib->header.StructType = FIB_MAGIC; 318 hw_fib->header.Size = cpu_to_le16(fibptr->dev->max_fib_size); 319 hw_fib->header.XferState = cpu_to_le32(HostOwned | FibInitialized | FibEmpty | FastResponseCapable); 320 hw_fib->header.u.ReceiverFibAddress = cpu_to_le32(fibptr->hw_fib_pa); 321 hw_fib->header.SenderSize = cpu_to_le16(fibptr->dev->max_fib_size); 322 } 323 324 /** 325 * fib_deallocate - deallocate a fib 326 * @fibptr: fib to deallocate 327 * 328 * Will deallocate and return to the free pool the FIB pointed to by the 329 * caller. 330 */ 331 332 static void fib_dealloc(struct fib * fibptr) 333 { 334 struct hw_fib *hw_fib = fibptr->hw_fib_va; 335 hw_fib->header.XferState = 0; 336 } 337 338 /* 339 * Commuication primitives define and support the queuing method we use to 340 * support host to adapter commuication. All queue accesses happen through 341 * these routines and are the only routines which have a knowledge of the 342 * how these queues are implemented. 343 */ 344 345 /** 346 * aac_get_entry - get a queue entry 347 * @dev: Adapter 348 * @qid: Queue Number 349 * @entry: Entry return 350 * @index: Index return 351 * @nonotify: notification control 352 * 353 * With a priority the routine returns a queue entry if the queue has free entries. If the queue 354 * is full(no free entries) than no entry is returned and the function returns 0 otherwise 1 is 355 * returned. 356 */ 357 358 static int aac_get_entry (struct aac_dev * dev, u32 qid, struct aac_entry **entry, u32 * index, unsigned long *nonotify) 359 { 360 struct aac_queue * q; 361 unsigned long idx; 362 363 /* 364 * All of the queues wrap when they reach the end, so we check 365 * to see if they have reached the end and if they have we just 366 * set the index back to zero. This is a wrap. You could or off 367 * the high bits in all updates but this is a bit faster I think. 368 */ 369 370 q = &dev->queues->queue[qid]; 371 372 idx = *index = le32_to_cpu(*(q->headers.producer)); 373 /* Interrupt Moderation, only interrupt for first two entries */ 374 if (idx != le32_to_cpu(*(q->headers.consumer))) { 375 if (--idx == 0) { 376 if (qid == AdapNormCmdQueue) 377 idx = ADAP_NORM_CMD_ENTRIES; 378 else 379 idx = ADAP_NORM_RESP_ENTRIES; 380 } 381 if (idx != le32_to_cpu(*(q->headers.consumer))) 382 *nonotify = 1; 383 } 384 385 if (qid == AdapNormCmdQueue) { 386 if (*index >= ADAP_NORM_CMD_ENTRIES) 387 *index = 0; /* Wrap to front of the Producer Queue. */ 388 } else { 389 if (*index >= ADAP_NORM_RESP_ENTRIES) 390 *index = 0; /* Wrap to front of the Producer Queue. */ 391 } 392 393 /* Queue is full */ 394 if ((*index + 1) == le32_to_cpu(*(q->headers.consumer))) { 395 printk(KERN_WARNING "Queue %d full, %u outstanding.\n", 396 qid, atomic_read(&q->numpending)); 397 return 0; 398 } else { 399 *entry = q->base + *index; 400 return 1; 401 } 402 } 403 404 /** 405 * aac_queue_get - get the next free QE 406 * @dev: Adapter 407 * @index: Returned index 408 * @priority: Priority of fib 409 * @fib: Fib to associate with the queue entry 410 * @wait: Wait if queue full 411 * @fibptr: Driver fib object to go with fib 412 * @nonotify: Don't notify the adapter 413 * 414 * Gets the next free QE off the requested priorty adapter command 415 * queue and associates the Fib with the QE. The QE represented by 416 * index is ready to insert on the queue when this routine returns 417 * success. 418 */ 419 420 int aac_queue_get(struct aac_dev * dev, u32 * index, u32 qid, struct hw_fib * hw_fib, int wait, struct fib * fibptr, unsigned long *nonotify) 421 { 422 struct aac_entry * entry = NULL; 423 int map = 0; 424 425 if (qid == AdapNormCmdQueue) { 426 /* if no entries wait for some if caller wants to */ 427 while (!aac_get_entry(dev, qid, &entry, index, nonotify)) { 428 printk(KERN_ERR "GetEntries failed\n"); 429 } 430 /* 431 * Setup queue entry with a command, status and fib mapped 432 */ 433 entry->size = cpu_to_le32(le16_to_cpu(hw_fib->header.Size)); 434 map = 1; 435 } else { 436 while (!aac_get_entry(dev, qid, &entry, index, nonotify)) { 437 /* if no entries wait for some if caller wants to */ 438 } 439 /* 440 * Setup queue entry with command, status and fib mapped 441 */ 442 entry->size = cpu_to_le32(le16_to_cpu(hw_fib->header.Size)); 443 entry->addr = hw_fib->header.SenderFibAddress; 444 /* Restore adapters pointer to the FIB */ 445 hw_fib->header.u.ReceiverFibAddress = hw_fib->header.SenderFibAddress; /* Let the adapter now where to find its data */ 446 map = 0; 447 } 448 /* 449 * If MapFib is true than we need to map the Fib and put pointers 450 * in the queue entry. 451 */ 452 if (map) 453 entry->addr = cpu_to_le32(fibptr->hw_fib_pa); 454 return 0; 455 } 456 457 /* 458 * Define the highest level of host to adapter communication routines. 459 * These routines will support host to adapter FS commuication. These 460 * routines have no knowledge of the commuication method used. This level 461 * sends and receives FIBs. This level has no knowledge of how these FIBs 462 * get passed back and forth. 463 */ 464 465 /** 466 * aac_fib_send - send a fib to the adapter 467 * @command: Command to send 468 * @fibptr: The fib 469 * @size: Size of fib data area 470 * @priority: Priority of Fib 471 * @wait: Async/sync select 472 * @reply: True if a reply is wanted 473 * @callback: Called with reply 474 * @callback_data: Passed to callback 475 * 476 * Sends the requested FIB to the adapter and optionally will wait for a 477 * response FIB. If the caller does not wish to wait for a response than 478 * an event to wait on must be supplied. This event will be set when a 479 * response FIB is received from the adapter. 480 */ 481 482 int aac_fib_send(u16 command, struct fib *fibptr, unsigned long size, 483 int priority, int wait, int reply, fib_callback callback, 484 void *callback_data) 485 { 486 struct aac_dev * dev = fibptr->dev; 487 struct hw_fib * hw_fib = fibptr->hw_fib_va; 488 unsigned long flags = 0; 489 unsigned long mflags = 0; 490 unsigned long sflags = 0; 491 492 if (!(hw_fib->header.XferState & cpu_to_le32(HostOwned))) 493 return -EBUSY; 494 495 if (hw_fib->header.XferState & cpu_to_le32(AdapterProcessed)) 496 return -EINVAL; 497 498 /* 499 * There are 5 cases with the wait and response requested flags. 500 * The only invalid cases are if the caller requests to wait and 501 * does not request a response and if the caller does not want a 502 * response and the Fib is not allocated from pool. If a response 503 * is not requested the Fib will just be deallocaed by the DPC 504 * routine when the response comes back from the adapter. No 505 * further processing will be done besides deleting the Fib. We 506 * will have a debug mode where the adapter can notify the host 507 * it had a problem and the host can log that fact. 508 */ 509 fibptr->flags = 0; 510 if (wait && !reply) { 511 return -EINVAL; 512 } else if (!wait && reply) { 513 hw_fib->header.XferState |= cpu_to_le32(Async | ResponseExpected); 514 FIB_COUNTER_INCREMENT(aac_config.AsyncSent); 515 } else if (!wait && !reply) { 516 hw_fib->header.XferState |= cpu_to_le32(NoResponseExpected); 517 FIB_COUNTER_INCREMENT(aac_config.NoResponseSent); 518 } else if (wait && reply) { 519 hw_fib->header.XferState |= cpu_to_le32(ResponseExpected); 520 FIB_COUNTER_INCREMENT(aac_config.NormalSent); 521 } 522 /* 523 * Map the fib into 32bits by using the fib number 524 */ 525 526 hw_fib->header.SenderFibAddress = 527 cpu_to_le32(((u32)(fibptr - dev->fibs)) << 2); 528 529 /* use the same shifted value for handle to be compatible 530 * with the new native hba command handle 531 */ 532 hw_fib->header.Handle = 533 cpu_to_le32((((u32)(fibptr - dev->fibs)) << 2) + 1); 534 535 /* 536 * Set FIB state to indicate where it came from and if we want a 537 * response from the adapter. Also load the command from the 538 * caller. 539 * 540 * Map the hw fib pointer as a 32bit value 541 */ 542 hw_fib->header.Command = cpu_to_le16(command); 543 hw_fib->header.XferState |= cpu_to_le32(SentFromHost); 544 /* 545 * Set the size of the Fib we want to send to the adapter 546 */ 547 hw_fib->header.Size = cpu_to_le16(sizeof(struct aac_fibhdr) + size); 548 if (le16_to_cpu(hw_fib->header.Size) > le16_to_cpu(hw_fib->header.SenderSize)) { 549 return -EMSGSIZE; 550 } 551 /* 552 * Get a queue entry connect the FIB to it and send an notify 553 * the adapter a command is ready. 554 */ 555 hw_fib->header.XferState |= cpu_to_le32(NormalPriority); 556 557 /* 558 * Fill in the Callback and CallbackContext if we are not 559 * going to wait. 560 */ 561 if (!wait) { 562 fibptr->callback = callback; 563 fibptr->callback_data = callback_data; 564 fibptr->flags = FIB_CONTEXT_FLAG; 565 } 566 567 fibptr->done = 0; 568 569 FIB_COUNTER_INCREMENT(aac_config.FibsSent); 570 571 dprintk((KERN_DEBUG "Fib contents:.\n")); 572 dprintk((KERN_DEBUG " Command = %d.\n", le32_to_cpu(hw_fib->header.Command))); 573 dprintk((KERN_DEBUG " SubCommand = %d.\n", le32_to_cpu(((struct aac_query_mount *)fib_data(fibptr))->command))); 574 dprintk((KERN_DEBUG " XferState = %x.\n", le32_to_cpu(hw_fib->header.XferState))); 575 dprintk((KERN_DEBUG " hw_fib va being sent=%p\n",fibptr->hw_fib_va)); 576 dprintk((KERN_DEBUG " hw_fib pa being sent=%lx\n",(ulong)fibptr->hw_fib_pa)); 577 dprintk((KERN_DEBUG " fib being sent=%p\n",fibptr)); 578 579 if (!dev->queues) 580 return -EBUSY; 581 582 if (wait) { 583 584 spin_lock_irqsave(&dev->manage_lock, mflags); 585 if (dev->management_fib_count >= AAC_NUM_MGT_FIB) { 586 printk(KERN_INFO "No management Fibs Available:%d\n", 587 dev->management_fib_count); 588 spin_unlock_irqrestore(&dev->manage_lock, mflags); 589 return -EBUSY; 590 } 591 dev->management_fib_count++; 592 spin_unlock_irqrestore(&dev->manage_lock, mflags); 593 spin_lock_irqsave(&fibptr->event_lock, flags); 594 } 595 596 if (dev->sync_mode) { 597 if (wait) 598 spin_unlock_irqrestore(&fibptr->event_lock, flags); 599 spin_lock_irqsave(&dev->sync_lock, sflags); 600 if (dev->sync_fib) { 601 list_add_tail(&fibptr->fiblink, &dev->sync_fib_list); 602 spin_unlock_irqrestore(&dev->sync_lock, sflags); 603 } else { 604 dev->sync_fib = fibptr; 605 spin_unlock_irqrestore(&dev->sync_lock, sflags); 606 aac_adapter_sync_cmd(dev, SEND_SYNCHRONOUS_FIB, 607 (u32)fibptr->hw_fib_pa, 0, 0, 0, 0, 0, 608 NULL, NULL, NULL, NULL, NULL); 609 } 610 if (wait) { 611 fibptr->flags |= FIB_CONTEXT_FLAG_WAIT; 612 if (wait_for_completion_interruptible(&fibptr->event_wait)) { 613 fibptr->flags &= ~FIB_CONTEXT_FLAG_WAIT; 614 return -EFAULT; 615 } 616 return 0; 617 } 618 return -EINPROGRESS; 619 } 620 621 if (aac_adapter_deliver(fibptr) != 0) { 622 printk(KERN_ERR "aac_fib_send: returned -EBUSY\n"); 623 if (wait) { 624 spin_unlock_irqrestore(&fibptr->event_lock, flags); 625 spin_lock_irqsave(&dev->manage_lock, mflags); 626 dev->management_fib_count--; 627 spin_unlock_irqrestore(&dev->manage_lock, mflags); 628 } 629 return -EBUSY; 630 } 631 632 633 /* 634 * If the caller wanted us to wait for response wait now. 635 */ 636 637 if (wait) { 638 spin_unlock_irqrestore(&fibptr->event_lock, flags); 639 /* Only set for first known interruptable command */ 640 if (wait < 0) { 641 /* 642 * *VERY* Dangerous to time out a command, the 643 * assumption is made that we have no hope of 644 * functioning because an interrupt routing or other 645 * hardware failure has occurred. 646 */ 647 unsigned long timeout = jiffies + (180 * HZ); /* 3 minutes */ 648 while (!try_wait_for_completion(&fibptr->event_wait)) { 649 int blink; 650 if (time_is_before_eq_jiffies(timeout)) { 651 struct aac_queue * q = &dev->queues->queue[AdapNormCmdQueue]; 652 atomic_dec(&q->numpending); 653 if (wait == -1) { 654 printk(KERN_ERR "aacraid: aac_fib_send: first asynchronous command timed out.\n" 655 "Usually a result of a PCI interrupt routing problem;\n" 656 "update mother board BIOS or consider utilizing one of\n" 657 "the SAFE mode kernel options (acpi, apic etc)\n"); 658 } 659 return -ETIMEDOUT; 660 } 661 662 if (unlikely(aac_pci_offline(dev))) 663 return -EFAULT; 664 665 if ((blink = aac_adapter_check_health(dev)) > 0) { 666 if (wait == -1) { 667 printk(KERN_ERR "aacraid: aac_fib_send: adapter blinkLED 0x%x.\n" 668 "Usually a result of a serious unrecoverable hardware problem\n", 669 blink); 670 } 671 return -EFAULT; 672 } 673 /* 674 * Allow other processes / CPUS to use core 675 */ 676 schedule(); 677 } 678 } else if (wait_for_completion_interruptible(&fibptr->event_wait)) { 679 /* Do nothing ... satisfy 680 * wait_for_completion_interruptible must_check */ 681 } 682 683 spin_lock_irqsave(&fibptr->event_lock, flags); 684 if (fibptr->done == 0) { 685 fibptr->done = 2; /* Tell interrupt we aborted */ 686 spin_unlock_irqrestore(&fibptr->event_lock, flags); 687 return -ERESTARTSYS; 688 } 689 spin_unlock_irqrestore(&fibptr->event_lock, flags); 690 BUG_ON(fibptr->done == 0); 691 692 if(unlikely(fibptr->flags & FIB_CONTEXT_FLAG_TIMED_OUT)) 693 return -ETIMEDOUT; 694 return 0; 695 } 696 /* 697 * If the user does not want a response than return success otherwise 698 * return pending 699 */ 700 if (reply) 701 return -EINPROGRESS; 702 else 703 return 0; 704 } 705 706 int aac_hba_send(u8 command, struct fib *fibptr, fib_callback callback, 707 void *callback_data) 708 { 709 struct aac_dev *dev = fibptr->dev; 710 int wait; 711 unsigned long flags = 0; 712 unsigned long mflags = 0; 713 struct aac_hba_cmd_req *hbacmd = (struct aac_hba_cmd_req *) 714 fibptr->hw_fib_va; 715 716 fibptr->flags = (FIB_CONTEXT_FLAG | FIB_CONTEXT_FLAG_NATIVE_HBA); 717 if (callback) { 718 wait = 0; 719 fibptr->callback = callback; 720 fibptr->callback_data = callback_data; 721 } else 722 wait = 1; 723 724 725 hbacmd->iu_type = command; 726 727 if (command == HBA_IU_TYPE_SCSI_CMD_REQ) { 728 /* bit1 of request_id must be 0 */ 729 hbacmd->request_id = 730 cpu_to_le32((((u32)(fibptr - dev->fibs)) << 2) + 1); 731 fibptr->flags |= FIB_CONTEXT_FLAG_SCSI_CMD; 732 } else 733 return -EINVAL; 734 735 736 if (wait) { 737 spin_lock_irqsave(&dev->manage_lock, mflags); 738 if (dev->management_fib_count >= AAC_NUM_MGT_FIB) { 739 spin_unlock_irqrestore(&dev->manage_lock, mflags); 740 return -EBUSY; 741 } 742 dev->management_fib_count++; 743 spin_unlock_irqrestore(&dev->manage_lock, mflags); 744 spin_lock_irqsave(&fibptr->event_lock, flags); 745 } 746 747 if (aac_adapter_deliver(fibptr) != 0) { 748 if (wait) { 749 spin_unlock_irqrestore(&fibptr->event_lock, flags); 750 spin_lock_irqsave(&dev->manage_lock, mflags); 751 dev->management_fib_count--; 752 spin_unlock_irqrestore(&dev->manage_lock, mflags); 753 } 754 return -EBUSY; 755 } 756 FIB_COUNTER_INCREMENT(aac_config.NativeSent); 757 758 if (wait) { 759 760 spin_unlock_irqrestore(&fibptr->event_lock, flags); 761 762 if (unlikely(aac_pci_offline(dev))) 763 return -EFAULT; 764 765 fibptr->flags |= FIB_CONTEXT_FLAG_WAIT; 766 if (wait_for_completion_interruptible(&fibptr->event_wait)) 767 fibptr->done = 2; 768 fibptr->flags &= ~(FIB_CONTEXT_FLAG_WAIT); 769 770 spin_lock_irqsave(&fibptr->event_lock, flags); 771 if ((fibptr->done == 0) || (fibptr->done == 2)) { 772 fibptr->done = 2; /* Tell interrupt we aborted */ 773 spin_unlock_irqrestore(&fibptr->event_lock, flags); 774 return -ERESTARTSYS; 775 } 776 spin_unlock_irqrestore(&fibptr->event_lock, flags); 777 WARN_ON(fibptr->done == 0); 778 779 if (unlikely(fibptr->flags & FIB_CONTEXT_FLAG_TIMED_OUT)) 780 return -ETIMEDOUT; 781 782 return 0; 783 } 784 785 return -EINPROGRESS; 786 } 787 788 /** 789 * aac_consumer_get - get the top of the queue 790 * @dev: Adapter 791 * @q: Queue 792 * @entry: Return entry 793 * 794 * Will return a pointer to the entry on the top of the queue requested that 795 * we are a consumer of, and return the address of the queue entry. It does 796 * not change the state of the queue. 797 */ 798 799 int aac_consumer_get(struct aac_dev * dev, struct aac_queue * q, struct aac_entry **entry) 800 { 801 u32 index; 802 int status; 803 if (le32_to_cpu(*q->headers.producer) == le32_to_cpu(*q->headers.consumer)) { 804 status = 0; 805 } else { 806 /* 807 * The consumer index must be wrapped if we have reached 808 * the end of the queue, else we just use the entry 809 * pointed to by the header index 810 */ 811 if (le32_to_cpu(*q->headers.consumer) >= q->entries) 812 index = 0; 813 else 814 index = le32_to_cpu(*q->headers.consumer); 815 *entry = q->base + index; 816 status = 1; 817 } 818 return(status); 819 } 820 821 /** 822 * aac_consumer_free - free consumer entry 823 * @dev: Adapter 824 * @q: Queue 825 * @qid: Queue ident 826 * 827 * Frees up the current top of the queue we are a consumer of. If the 828 * queue was full notify the producer that the queue is no longer full. 829 */ 830 831 void aac_consumer_free(struct aac_dev * dev, struct aac_queue *q, u32 qid) 832 { 833 int wasfull = 0; 834 u32 notify; 835 836 if ((le32_to_cpu(*q->headers.producer)+1) == le32_to_cpu(*q->headers.consumer)) 837 wasfull = 1; 838 839 if (le32_to_cpu(*q->headers.consumer) >= q->entries) 840 *q->headers.consumer = cpu_to_le32(1); 841 else 842 le32_add_cpu(q->headers.consumer, 1); 843 844 if (wasfull) { 845 switch (qid) { 846 847 case HostNormCmdQueue: 848 notify = HostNormCmdNotFull; 849 break; 850 case HostNormRespQueue: 851 notify = HostNormRespNotFull; 852 break; 853 default: 854 BUG(); 855 return; 856 } 857 aac_adapter_notify(dev, notify); 858 } 859 } 860 861 /** 862 * aac_fib_adapter_complete - complete adapter issued fib 863 * @fibptr: fib to complete 864 * @size: size of fib 865 * 866 * Will do all necessary work to complete a FIB that was sent from 867 * the adapter. 868 */ 869 870 int aac_fib_adapter_complete(struct fib *fibptr, unsigned short size) 871 { 872 struct hw_fib * hw_fib = fibptr->hw_fib_va; 873 struct aac_dev * dev = fibptr->dev; 874 struct aac_queue * q; 875 unsigned long nointr = 0; 876 unsigned long qflags; 877 878 if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE1 || 879 dev->comm_interface == AAC_COMM_MESSAGE_TYPE2 || 880 dev->comm_interface == AAC_COMM_MESSAGE_TYPE3) { 881 kfree(hw_fib); 882 return 0; 883 } 884 885 if (hw_fib->header.XferState == 0) { 886 if (dev->comm_interface == AAC_COMM_MESSAGE) 887 kfree(hw_fib); 888 return 0; 889 } 890 /* 891 * If we plan to do anything check the structure type first. 892 */ 893 if (hw_fib->header.StructType != FIB_MAGIC && 894 hw_fib->header.StructType != FIB_MAGIC2 && 895 hw_fib->header.StructType != FIB_MAGIC2_64) { 896 if (dev->comm_interface == AAC_COMM_MESSAGE) 897 kfree(hw_fib); 898 return -EINVAL; 899 } 900 /* 901 * This block handles the case where the adapter had sent us a 902 * command and we have finished processing the command. We 903 * call completeFib when we are done processing the command 904 * and want to send a response back to the adapter. This will 905 * send the completed cdb to the adapter. 906 */ 907 if (hw_fib->header.XferState & cpu_to_le32(SentFromAdapter)) { 908 if (dev->comm_interface == AAC_COMM_MESSAGE) { 909 kfree (hw_fib); 910 } else { 911 u32 index; 912 hw_fib->header.XferState |= cpu_to_le32(HostProcessed); 913 if (size) { 914 size += sizeof(struct aac_fibhdr); 915 if (size > le16_to_cpu(hw_fib->header.SenderSize)) 916 return -EMSGSIZE; 917 hw_fib->header.Size = cpu_to_le16(size); 918 } 919 q = &dev->queues->queue[AdapNormRespQueue]; 920 spin_lock_irqsave(q->lock, qflags); 921 aac_queue_get(dev, &index, AdapNormRespQueue, hw_fib, 1, NULL, &nointr); 922 *(q->headers.producer) = cpu_to_le32(index + 1); 923 spin_unlock_irqrestore(q->lock, qflags); 924 if (!(nointr & (int)aac_config.irq_mod)) 925 aac_adapter_notify(dev, AdapNormRespQueue); 926 } 927 } else { 928 printk(KERN_WARNING "aac_fib_adapter_complete: " 929 "Unknown xferstate detected.\n"); 930 BUG(); 931 } 932 return 0; 933 } 934 935 /** 936 * aac_fib_complete - fib completion handler 937 * @fib: FIB to complete 938 * 939 * Will do all necessary work to complete a FIB. 940 */ 941 942 int aac_fib_complete(struct fib *fibptr) 943 { 944 struct hw_fib * hw_fib = fibptr->hw_fib_va; 945 946 if (fibptr->flags & FIB_CONTEXT_FLAG_NATIVE_HBA) { 947 fib_dealloc(fibptr); 948 return 0; 949 } 950 951 /* 952 * Check for a fib which has already been completed or with a 953 * status wait timeout 954 */ 955 956 if (hw_fib->header.XferState == 0 || fibptr->done == 2) 957 return 0; 958 /* 959 * If we plan to do anything check the structure type first. 960 */ 961 962 if (hw_fib->header.StructType != FIB_MAGIC && 963 hw_fib->header.StructType != FIB_MAGIC2 && 964 hw_fib->header.StructType != FIB_MAGIC2_64) 965 return -EINVAL; 966 /* 967 * This block completes a cdb which orginated on the host and we 968 * just need to deallocate the cdb or reinit it. At this point the 969 * command is complete that we had sent to the adapter and this 970 * cdb could be reused. 971 */ 972 973 if((hw_fib->header.XferState & cpu_to_le32(SentFromHost)) && 974 (hw_fib->header.XferState & cpu_to_le32(AdapterProcessed))) 975 { 976 fib_dealloc(fibptr); 977 } 978 else if(hw_fib->header.XferState & cpu_to_le32(SentFromHost)) 979 { 980 /* 981 * This handles the case when the host has aborted the I/O 982 * to the adapter because the adapter is not responding 983 */ 984 fib_dealloc(fibptr); 985 } else if(hw_fib->header.XferState & cpu_to_le32(HostOwned)) { 986 fib_dealloc(fibptr); 987 } else { 988 BUG(); 989 } 990 return 0; 991 } 992 993 /** 994 * aac_printf - handle printf from firmware 995 * @dev: Adapter 996 * @val: Message info 997 * 998 * Print a message passed to us by the controller firmware on the 999 * Adaptec board 1000 */ 1001 1002 void aac_printf(struct aac_dev *dev, u32 val) 1003 { 1004 char *cp = dev->printfbuf; 1005 if (dev->printf_enabled) 1006 { 1007 int length = val & 0xffff; 1008 int level = (val >> 16) & 0xffff; 1009 1010 /* 1011 * The size of the printfbuf is set in port.c 1012 * There is no variable or define for it 1013 */ 1014 if (length > 255) 1015 length = 255; 1016 if (cp[length] != 0) 1017 cp[length] = 0; 1018 if (level == LOG_AAC_HIGH_ERROR) 1019 printk(KERN_WARNING "%s:%s", dev->name, cp); 1020 else 1021 printk(KERN_INFO "%s:%s", dev->name, cp); 1022 } 1023 memset(cp, 0, 256); 1024 } 1025 1026 static inline int aac_aif_data(struct aac_aifcmd *aifcmd, uint32_t index) 1027 { 1028 return le32_to_cpu(((__le32 *)aifcmd->data)[index]); 1029 } 1030 1031 1032 static void aac_handle_aif_bu(struct aac_dev *dev, struct aac_aifcmd *aifcmd) 1033 { 1034 switch (aac_aif_data(aifcmd, 1)) { 1035 case AifBuCacheDataLoss: 1036 if (aac_aif_data(aifcmd, 2)) 1037 dev_info(&dev->pdev->dev, "Backup unit had cache data loss - [%d]\n", 1038 aac_aif_data(aifcmd, 2)); 1039 else 1040 dev_info(&dev->pdev->dev, "Backup Unit had cache data loss\n"); 1041 break; 1042 case AifBuCacheDataRecover: 1043 if (aac_aif_data(aifcmd, 2)) 1044 dev_info(&dev->pdev->dev, "DDR cache data recovered successfully - [%d]\n", 1045 aac_aif_data(aifcmd, 2)); 1046 else 1047 dev_info(&dev->pdev->dev, "DDR cache data recovered successfully\n"); 1048 break; 1049 } 1050 } 1051 1052 /** 1053 * aac_handle_aif - Handle a message from the firmware 1054 * @dev: Which adapter this fib is from 1055 * @fibptr: Pointer to fibptr from adapter 1056 * 1057 * This routine handles a driver notify fib from the adapter and 1058 * dispatches it to the appropriate routine for handling. 1059 */ 1060 1061 #define AIF_SNIFF_TIMEOUT (500*HZ) 1062 static void aac_handle_aif(struct aac_dev * dev, struct fib * fibptr) 1063 { 1064 struct hw_fib * hw_fib = fibptr->hw_fib_va; 1065 struct aac_aifcmd * aifcmd = (struct aac_aifcmd *)hw_fib->data; 1066 u32 channel, id, lun, container; 1067 struct scsi_device *device; 1068 enum { 1069 NOTHING, 1070 DELETE, 1071 ADD, 1072 CHANGE 1073 } device_config_needed = NOTHING; 1074 1075 /* Sniff for container changes */ 1076 1077 if (!dev || !dev->fsa_dev) 1078 return; 1079 container = channel = id = lun = (u32)-1; 1080 1081 /* 1082 * We have set this up to try and minimize the number of 1083 * re-configures that take place. As a result of this when 1084 * certain AIF's come in we will set a flag waiting for another 1085 * type of AIF before setting the re-config flag. 1086 */ 1087 switch (le32_to_cpu(aifcmd->command)) { 1088 case AifCmdDriverNotify: 1089 switch (le32_to_cpu(((__le32 *)aifcmd->data)[0])) { 1090 case AifRawDeviceRemove: 1091 container = le32_to_cpu(((__le32 *)aifcmd->data)[1]); 1092 if ((container >> 28)) { 1093 container = (u32)-1; 1094 break; 1095 } 1096 channel = (container >> 24) & 0xF; 1097 if (channel >= dev->maximum_num_channels) { 1098 container = (u32)-1; 1099 break; 1100 } 1101 id = container & 0xFFFF; 1102 if (id >= dev->maximum_num_physicals) { 1103 container = (u32)-1; 1104 break; 1105 } 1106 lun = (container >> 16) & 0xFF; 1107 container = (u32)-1; 1108 channel = aac_phys_to_logical(channel); 1109 device_config_needed = DELETE; 1110 break; 1111 1112 /* 1113 * Morph or Expand complete 1114 */ 1115 case AifDenMorphComplete: 1116 case AifDenVolumeExtendComplete: 1117 container = le32_to_cpu(((__le32 *)aifcmd->data)[1]); 1118 if (container >= dev->maximum_num_containers) 1119 break; 1120 1121 /* 1122 * Find the scsi_device associated with the SCSI 1123 * address. Make sure we have the right array, and if 1124 * so set the flag to initiate a new re-config once we 1125 * see an AifEnConfigChange AIF come through. 1126 */ 1127 1128 if ((dev != NULL) && (dev->scsi_host_ptr != NULL)) { 1129 device = scsi_device_lookup(dev->scsi_host_ptr, 1130 CONTAINER_TO_CHANNEL(container), 1131 CONTAINER_TO_ID(container), 1132 CONTAINER_TO_LUN(container)); 1133 if (device) { 1134 dev->fsa_dev[container].config_needed = CHANGE; 1135 dev->fsa_dev[container].config_waiting_on = AifEnConfigChange; 1136 dev->fsa_dev[container].config_waiting_stamp = jiffies; 1137 scsi_device_put(device); 1138 } 1139 } 1140 } 1141 1142 /* 1143 * If we are waiting on something and this happens to be 1144 * that thing then set the re-configure flag. 1145 */ 1146 if (container != (u32)-1) { 1147 if (container >= dev->maximum_num_containers) 1148 break; 1149 if ((dev->fsa_dev[container].config_waiting_on == 1150 le32_to_cpu(*(__le32 *)aifcmd->data)) && 1151 time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT)) 1152 dev->fsa_dev[container].config_waiting_on = 0; 1153 } else for (container = 0; 1154 container < dev->maximum_num_containers; ++container) { 1155 if ((dev->fsa_dev[container].config_waiting_on == 1156 le32_to_cpu(*(__le32 *)aifcmd->data)) && 1157 time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT)) 1158 dev->fsa_dev[container].config_waiting_on = 0; 1159 } 1160 break; 1161 1162 case AifCmdEventNotify: 1163 switch (le32_to_cpu(((__le32 *)aifcmd->data)[0])) { 1164 case AifEnBatteryEvent: 1165 dev->cache_protected = 1166 (((__le32 *)aifcmd->data)[1] == cpu_to_le32(3)); 1167 break; 1168 /* 1169 * Add an Array. 1170 */ 1171 case AifEnAddContainer: 1172 container = le32_to_cpu(((__le32 *)aifcmd->data)[1]); 1173 if (container >= dev->maximum_num_containers) 1174 break; 1175 dev->fsa_dev[container].config_needed = ADD; 1176 dev->fsa_dev[container].config_waiting_on = 1177 AifEnConfigChange; 1178 dev->fsa_dev[container].config_waiting_stamp = jiffies; 1179 break; 1180 1181 /* 1182 * Delete an Array. 1183 */ 1184 case AifEnDeleteContainer: 1185 container = le32_to_cpu(((__le32 *)aifcmd->data)[1]); 1186 if (container >= dev->maximum_num_containers) 1187 break; 1188 dev->fsa_dev[container].config_needed = DELETE; 1189 dev->fsa_dev[container].config_waiting_on = 1190 AifEnConfigChange; 1191 dev->fsa_dev[container].config_waiting_stamp = jiffies; 1192 break; 1193 1194 /* 1195 * Container change detected. If we currently are not 1196 * waiting on something else, setup to wait on a Config Change. 1197 */ 1198 case AifEnContainerChange: 1199 container = le32_to_cpu(((__le32 *)aifcmd->data)[1]); 1200 if (container >= dev->maximum_num_containers) 1201 break; 1202 if (dev->fsa_dev[container].config_waiting_on && 1203 time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT)) 1204 break; 1205 dev->fsa_dev[container].config_needed = CHANGE; 1206 dev->fsa_dev[container].config_waiting_on = 1207 AifEnConfigChange; 1208 dev->fsa_dev[container].config_waiting_stamp = jiffies; 1209 break; 1210 1211 case AifEnConfigChange: 1212 break; 1213 1214 case AifEnAddJBOD: 1215 case AifEnDeleteJBOD: 1216 container = le32_to_cpu(((__le32 *)aifcmd->data)[1]); 1217 if ((container >> 28)) { 1218 container = (u32)-1; 1219 break; 1220 } 1221 channel = (container >> 24) & 0xF; 1222 if (channel >= dev->maximum_num_channels) { 1223 container = (u32)-1; 1224 break; 1225 } 1226 id = container & 0xFFFF; 1227 if (id >= dev->maximum_num_physicals) { 1228 container = (u32)-1; 1229 break; 1230 } 1231 lun = (container >> 16) & 0xFF; 1232 container = (u32)-1; 1233 channel = aac_phys_to_logical(channel); 1234 device_config_needed = 1235 (((__le32 *)aifcmd->data)[0] == 1236 cpu_to_le32(AifEnAddJBOD)) ? ADD : DELETE; 1237 if (device_config_needed == ADD) { 1238 device = scsi_device_lookup(dev->scsi_host_ptr, 1239 channel, 1240 id, 1241 lun); 1242 if (device) { 1243 scsi_remove_device(device); 1244 scsi_device_put(device); 1245 } 1246 } 1247 break; 1248 1249 case AifEnEnclosureManagement: 1250 /* 1251 * If in JBOD mode, automatic exposure of new 1252 * physical target to be suppressed until configured. 1253 */ 1254 if (dev->jbod) 1255 break; 1256 switch (le32_to_cpu(((__le32 *)aifcmd->data)[3])) { 1257 case EM_DRIVE_INSERTION: 1258 case EM_DRIVE_REMOVAL: 1259 case EM_SES_DRIVE_INSERTION: 1260 case EM_SES_DRIVE_REMOVAL: 1261 container = le32_to_cpu( 1262 ((__le32 *)aifcmd->data)[2]); 1263 if ((container >> 28)) { 1264 container = (u32)-1; 1265 break; 1266 } 1267 channel = (container >> 24) & 0xF; 1268 if (channel >= dev->maximum_num_channels) { 1269 container = (u32)-1; 1270 break; 1271 } 1272 id = container & 0xFFFF; 1273 lun = (container >> 16) & 0xFF; 1274 container = (u32)-1; 1275 if (id >= dev->maximum_num_physicals) { 1276 /* legacy dev_t ? */ 1277 if ((0x2000 <= id) || lun || channel || 1278 ((channel = (id >> 7) & 0x3F) >= 1279 dev->maximum_num_channels)) 1280 break; 1281 lun = (id >> 4) & 7; 1282 id &= 0xF; 1283 } 1284 channel = aac_phys_to_logical(channel); 1285 device_config_needed = 1286 ((((__le32 *)aifcmd->data)[3] 1287 == cpu_to_le32(EM_DRIVE_INSERTION)) || 1288 (((__le32 *)aifcmd->data)[3] 1289 == cpu_to_le32(EM_SES_DRIVE_INSERTION))) ? 1290 ADD : DELETE; 1291 break; 1292 } 1293 break; 1294 case AifBuManagerEvent: 1295 aac_handle_aif_bu(dev, aifcmd); 1296 break; 1297 } 1298 1299 /* 1300 * If we are waiting on something and this happens to be 1301 * that thing then set the re-configure flag. 1302 */ 1303 if (container != (u32)-1) { 1304 if (container >= dev->maximum_num_containers) 1305 break; 1306 if ((dev->fsa_dev[container].config_waiting_on == 1307 le32_to_cpu(*(__le32 *)aifcmd->data)) && 1308 time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT)) 1309 dev->fsa_dev[container].config_waiting_on = 0; 1310 } else for (container = 0; 1311 container < dev->maximum_num_containers; ++container) { 1312 if ((dev->fsa_dev[container].config_waiting_on == 1313 le32_to_cpu(*(__le32 *)aifcmd->data)) && 1314 time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT)) 1315 dev->fsa_dev[container].config_waiting_on = 0; 1316 } 1317 break; 1318 1319 case AifCmdJobProgress: 1320 /* 1321 * These are job progress AIF's. When a Clear is being 1322 * done on a container it is initially created then hidden from 1323 * the OS. When the clear completes we don't get a config 1324 * change so we monitor the job status complete on a clear then 1325 * wait for a container change. 1326 */ 1327 1328 if (((__le32 *)aifcmd->data)[1] == cpu_to_le32(AifJobCtrZero) && 1329 (((__le32 *)aifcmd->data)[6] == ((__le32 *)aifcmd->data)[5] || 1330 ((__le32 *)aifcmd->data)[4] == cpu_to_le32(AifJobStsSuccess))) { 1331 for (container = 0; 1332 container < dev->maximum_num_containers; 1333 ++container) { 1334 /* 1335 * Stomp on all config sequencing for all 1336 * containers? 1337 */ 1338 dev->fsa_dev[container].config_waiting_on = 1339 AifEnContainerChange; 1340 dev->fsa_dev[container].config_needed = ADD; 1341 dev->fsa_dev[container].config_waiting_stamp = 1342 jiffies; 1343 } 1344 } 1345 if (((__le32 *)aifcmd->data)[1] == cpu_to_le32(AifJobCtrZero) && 1346 ((__le32 *)aifcmd->data)[6] == 0 && 1347 ((__le32 *)aifcmd->data)[4] == cpu_to_le32(AifJobStsRunning)) { 1348 for (container = 0; 1349 container < dev->maximum_num_containers; 1350 ++container) { 1351 /* 1352 * Stomp on all config sequencing for all 1353 * containers? 1354 */ 1355 dev->fsa_dev[container].config_waiting_on = 1356 AifEnContainerChange; 1357 dev->fsa_dev[container].config_needed = DELETE; 1358 dev->fsa_dev[container].config_waiting_stamp = 1359 jiffies; 1360 } 1361 } 1362 break; 1363 } 1364 1365 container = 0; 1366 retry_next: 1367 if (device_config_needed == NOTHING) { 1368 for (; container < dev->maximum_num_containers; ++container) { 1369 if ((dev->fsa_dev[container].config_waiting_on == 0) && 1370 (dev->fsa_dev[container].config_needed != NOTHING) && 1371 time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT)) { 1372 device_config_needed = 1373 dev->fsa_dev[container].config_needed; 1374 dev->fsa_dev[container].config_needed = NOTHING; 1375 channel = CONTAINER_TO_CHANNEL(container); 1376 id = CONTAINER_TO_ID(container); 1377 lun = CONTAINER_TO_LUN(container); 1378 break; 1379 } 1380 } 1381 } 1382 if (device_config_needed == NOTHING) 1383 return; 1384 1385 /* 1386 * If we decided that a re-configuration needs to be done, 1387 * schedule it here on the way out the door, please close the door 1388 * behind you. 1389 */ 1390 1391 /* 1392 * Find the scsi_device associated with the SCSI address, 1393 * and mark it as changed, invalidating the cache. This deals 1394 * with changes to existing device IDs. 1395 */ 1396 1397 if (!dev || !dev->scsi_host_ptr) 1398 return; 1399 /* 1400 * force reload of disk info via aac_probe_container 1401 */ 1402 if ((channel == CONTAINER_CHANNEL) && 1403 (device_config_needed != NOTHING)) { 1404 if (dev->fsa_dev[container].valid == 1) 1405 dev->fsa_dev[container].valid = 2; 1406 aac_probe_container(dev, container); 1407 } 1408 device = scsi_device_lookup(dev->scsi_host_ptr, channel, id, lun); 1409 if (device) { 1410 switch (device_config_needed) { 1411 case DELETE: 1412 #if (defined(AAC_DEBUG_INSTRUMENT_AIF_DELETE)) 1413 scsi_remove_device(device); 1414 #else 1415 if (scsi_device_online(device)) { 1416 scsi_device_set_state(device, SDEV_OFFLINE); 1417 sdev_printk(KERN_INFO, device, 1418 "Device offlined - %s\n", 1419 (channel == CONTAINER_CHANNEL) ? 1420 "array deleted" : 1421 "enclosure services event"); 1422 } 1423 #endif 1424 break; 1425 case ADD: 1426 if (!scsi_device_online(device)) { 1427 sdev_printk(KERN_INFO, device, 1428 "Device online - %s\n", 1429 (channel == CONTAINER_CHANNEL) ? 1430 "array created" : 1431 "enclosure services event"); 1432 scsi_device_set_state(device, SDEV_RUNNING); 1433 } 1434 /* FALLTHRU */ 1435 case CHANGE: 1436 if ((channel == CONTAINER_CHANNEL) 1437 && (!dev->fsa_dev[container].valid)) { 1438 #if (defined(AAC_DEBUG_INSTRUMENT_AIF_DELETE)) 1439 scsi_remove_device(device); 1440 #else 1441 if (!scsi_device_online(device)) 1442 break; 1443 scsi_device_set_state(device, SDEV_OFFLINE); 1444 sdev_printk(KERN_INFO, device, 1445 "Device offlined - %s\n", 1446 "array failed"); 1447 #endif 1448 break; 1449 } 1450 scsi_rescan_device(&device->sdev_gendev); 1451 1452 default: 1453 break; 1454 } 1455 scsi_device_put(device); 1456 device_config_needed = NOTHING; 1457 } 1458 if (device_config_needed == ADD) 1459 scsi_add_device(dev->scsi_host_ptr, channel, id, lun); 1460 if (channel == CONTAINER_CHANNEL) { 1461 container++; 1462 device_config_needed = NOTHING; 1463 goto retry_next; 1464 } 1465 } 1466 1467 static void aac_schedule_bus_scan(struct aac_dev *aac) 1468 { 1469 if (aac->sa_firmware) 1470 aac_schedule_safw_scan_worker(aac); 1471 else 1472 aac_schedule_src_reinit_aif_worker(aac); 1473 } 1474 1475 static int _aac_reset_adapter(struct aac_dev *aac, int forced, u8 reset_type) 1476 { 1477 int index, quirks; 1478 int retval; 1479 struct Scsi_Host *host = aac->scsi_host_ptr; 1480 int jafo = 0; 1481 int bled; 1482 u64 dmamask; 1483 int num_of_fibs = 0; 1484 1485 /* 1486 * Assumptions: 1487 * - host is locked, unless called by the aacraid thread. 1488 * (a matter of convenience, due to legacy issues surrounding 1489 * eh_host_adapter_reset). 1490 * - in_reset is asserted, so no new i/o is getting to the 1491 * card. 1492 * - The card is dead, or will be very shortly ;-/ so no new 1493 * commands are completing in the interrupt service. 1494 */ 1495 aac_adapter_disable_int(aac); 1496 if (aac->thread && aac->thread->pid != current->pid) { 1497 spin_unlock_irq(host->host_lock); 1498 kthread_stop(aac->thread); 1499 aac->thread = NULL; 1500 jafo = 1; 1501 } 1502 1503 /* 1504 * If a positive health, means in a known DEAD PANIC 1505 * state and the adapter could be reset to `try again'. 1506 */ 1507 bled = forced ? 0 : aac_adapter_check_health(aac); 1508 retval = aac_adapter_restart(aac, bled, reset_type); 1509 1510 if (retval) 1511 goto out; 1512 1513 /* 1514 * Loop through the fibs, close the synchronous FIBS 1515 */ 1516 retval = 1; 1517 num_of_fibs = aac->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB; 1518 for (index = 0; index < num_of_fibs; index++) { 1519 1520 struct fib *fib = &aac->fibs[index]; 1521 __le32 XferState = fib->hw_fib_va->header.XferState; 1522 bool is_response_expected = false; 1523 1524 if (!(XferState & cpu_to_le32(NoResponseExpected | Async)) && 1525 (XferState & cpu_to_le32(ResponseExpected))) 1526 is_response_expected = true; 1527 1528 if (is_response_expected 1529 || fib->flags & FIB_CONTEXT_FLAG_WAIT) { 1530 unsigned long flagv; 1531 spin_lock_irqsave(&fib->event_lock, flagv); 1532 complete(&fib->event_wait); 1533 spin_unlock_irqrestore(&fib->event_lock, flagv); 1534 schedule(); 1535 retval = 0; 1536 } 1537 } 1538 /* Give some extra time for ioctls to complete. */ 1539 if (retval == 0) 1540 ssleep(2); 1541 index = aac->cardtype; 1542 1543 /* 1544 * Re-initialize the adapter, first free resources, then carefully 1545 * apply the initialization sequence to come back again. Only risk 1546 * is a change in Firmware dropping cache, it is assumed the caller 1547 * will ensure that i/o is queisced and the card is flushed in that 1548 * case. 1549 */ 1550 aac_free_irq(aac); 1551 aac_fib_map_free(aac); 1552 dma_free_coherent(&aac->pdev->dev, aac->comm_size, aac->comm_addr, 1553 aac->comm_phys); 1554 aac->comm_addr = NULL; 1555 aac->comm_phys = 0; 1556 kfree(aac->queues); 1557 aac->queues = NULL; 1558 kfree(aac->fsa_dev); 1559 aac->fsa_dev = NULL; 1560 1561 dmamask = DMA_BIT_MASK(32); 1562 quirks = aac_get_driver_ident(index)->quirks; 1563 if (quirks & AAC_QUIRK_31BIT) 1564 retval = pci_set_dma_mask(aac->pdev, dmamask); 1565 else if (!(quirks & AAC_QUIRK_SRC)) 1566 retval = pci_set_dma_mask(aac->pdev, dmamask); 1567 else 1568 retval = pci_set_consistent_dma_mask(aac->pdev, dmamask); 1569 1570 if (quirks & AAC_QUIRK_31BIT && !retval) { 1571 dmamask = DMA_BIT_MASK(31); 1572 retval = pci_set_consistent_dma_mask(aac->pdev, dmamask); 1573 } 1574 1575 if (retval) 1576 goto out; 1577 1578 if ((retval = (*(aac_get_driver_ident(index)->init))(aac))) 1579 goto out; 1580 1581 if (jafo) { 1582 aac->thread = kthread_run(aac_command_thread, aac, "%s", 1583 aac->name); 1584 if (IS_ERR(aac->thread)) { 1585 retval = PTR_ERR(aac->thread); 1586 aac->thread = NULL; 1587 goto out; 1588 } 1589 } 1590 (void)aac_get_adapter_info(aac); 1591 if ((quirks & AAC_QUIRK_34SG) && (host->sg_tablesize > 34)) { 1592 host->sg_tablesize = 34; 1593 host->max_sectors = (host->sg_tablesize * 8) + 112; 1594 } 1595 if ((quirks & AAC_QUIRK_17SG) && (host->sg_tablesize > 17)) { 1596 host->sg_tablesize = 17; 1597 host->max_sectors = (host->sg_tablesize * 8) + 112; 1598 } 1599 aac_get_config_status(aac, 1); 1600 aac_get_containers(aac); 1601 /* 1602 * This is where the assumption that the Adapter is quiesced 1603 * is important. 1604 */ 1605 scsi_host_complete_all_commands(host, DID_RESET); 1606 1607 retval = 0; 1608 out: 1609 aac->in_reset = 0; 1610 1611 /* 1612 * Issue bus rescan to catch any configuration that might have 1613 * occurred 1614 */ 1615 if (!retval && !is_kdump_kernel()) { 1616 dev_info(&aac->pdev->dev, "Scheduling bus rescan\n"); 1617 aac_schedule_bus_scan(aac); 1618 } 1619 1620 if (jafo) { 1621 spin_lock_irq(host->host_lock); 1622 } 1623 return retval; 1624 } 1625 1626 int aac_reset_adapter(struct aac_dev *aac, int forced, u8 reset_type) 1627 { 1628 unsigned long flagv = 0; 1629 int retval, unblock_retval; 1630 struct Scsi_Host *host = aac->scsi_host_ptr; 1631 int bled; 1632 1633 if (spin_trylock_irqsave(&aac->fib_lock, flagv) == 0) 1634 return -EBUSY; 1635 1636 if (aac->in_reset) { 1637 spin_unlock_irqrestore(&aac->fib_lock, flagv); 1638 return -EBUSY; 1639 } 1640 aac->in_reset = 1; 1641 spin_unlock_irqrestore(&aac->fib_lock, flagv); 1642 1643 /* 1644 * Wait for all commands to complete to this specific 1645 * target (block maximum 60 seconds). Although not necessary, 1646 * it does make us a good storage citizen. 1647 */ 1648 scsi_host_block(host); 1649 1650 /* Quiesce build, flush cache, write through mode */ 1651 if (forced < 2) 1652 aac_send_shutdown(aac); 1653 spin_lock_irqsave(host->host_lock, flagv); 1654 bled = forced ? forced : 1655 (aac_check_reset != 0 && aac_check_reset != 1); 1656 retval = _aac_reset_adapter(aac, bled, reset_type); 1657 spin_unlock_irqrestore(host->host_lock, flagv); 1658 1659 unblock_retval = scsi_host_unblock(host, SDEV_RUNNING); 1660 if (!retval) 1661 retval = unblock_retval; 1662 if ((forced < 2) && (retval == -ENODEV)) { 1663 /* Unwind aac_send_shutdown() IOP_RESET unsupported/disabled */ 1664 struct fib * fibctx = aac_fib_alloc(aac); 1665 if (fibctx) { 1666 struct aac_pause *cmd; 1667 int status; 1668 1669 aac_fib_init(fibctx); 1670 1671 cmd = (struct aac_pause *) fib_data(fibctx); 1672 1673 cmd->command = cpu_to_le32(VM_ContainerConfig); 1674 cmd->type = cpu_to_le32(CT_PAUSE_IO); 1675 cmd->timeout = cpu_to_le32(1); 1676 cmd->min = cpu_to_le32(1); 1677 cmd->noRescan = cpu_to_le32(1); 1678 cmd->count = cpu_to_le32(0); 1679 1680 status = aac_fib_send(ContainerCommand, 1681 fibctx, 1682 sizeof(struct aac_pause), 1683 FsaNormal, 1684 -2 /* Timeout silently */, 1, 1685 NULL, NULL); 1686 1687 if (status >= 0) 1688 aac_fib_complete(fibctx); 1689 /* FIB should be freed only after getting 1690 * the response from the F/W */ 1691 if (status != -ERESTARTSYS) 1692 aac_fib_free(fibctx); 1693 } 1694 } 1695 1696 return retval; 1697 } 1698 1699 int aac_check_health(struct aac_dev * aac) 1700 { 1701 int BlinkLED; 1702 unsigned long time_now, flagv = 0; 1703 struct list_head * entry; 1704 1705 /* Extending the scope of fib_lock slightly to protect aac->in_reset */ 1706 if (spin_trylock_irqsave(&aac->fib_lock, flagv) == 0) 1707 return 0; 1708 1709 if (aac->in_reset || !(BlinkLED = aac_adapter_check_health(aac))) { 1710 spin_unlock_irqrestore(&aac->fib_lock, flagv); 1711 return 0; /* OK */ 1712 } 1713 1714 aac->in_reset = 1; 1715 1716 /* Fake up an AIF: 1717 * aac_aifcmd.command = AifCmdEventNotify = 1 1718 * aac_aifcmd.seqnum = 0xFFFFFFFF 1719 * aac_aifcmd.data[0] = AifEnExpEvent = 23 1720 * aac_aifcmd.data[1] = AifExeFirmwarePanic = 3 1721 * aac.aifcmd.data[2] = AifHighPriority = 3 1722 * aac.aifcmd.data[3] = BlinkLED 1723 */ 1724 1725 time_now = jiffies/HZ; 1726 entry = aac->fib_list.next; 1727 1728 /* 1729 * For each Context that is on the 1730 * fibctxList, make a copy of the 1731 * fib, and then set the event to wake up the 1732 * thread that is waiting for it. 1733 */ 1734 while (entry != &aac->fib_list) { 1735 /* 1736 * Extract the fibctx 1737 */ 1738 struct aac_fib_context *fibctx = list_entry(entry, struct aac_fib_context, next); 1739 struct hw_fib * hw_fib; 1740 struct fib * fib; 1741 /* 1742 * Check if the queue is getting 1743 * backlogged 1744 */ 1745 if (fibctx->count > 20) { 1746 /* 1747 * It's *not* jiffies folks, 1748 * but jiffies / HZ, so do not 1749 * panic ... 1750 */ 1751 u32 time_last = fibctx->jiffies; 1752 /* 1753 * Has it been > 2 minutes 1754 * since the last read off 1755 * the queue? 1756 */ 1757 if ((time_now - time_last) > aif_timeout) { 1758 entry = entry->next; 1759 aac_close_fib_context(aac, fibctx); 1760 continue; 1761 } 1762 } 1763 /* 1764 * Warning: no sleep allowed while 1765 * holding spinlock 1766 */ 1767 hw_fib = kzalloc(sizeof(struct hw_fib), GFP_ATOMIC); 1768 fib = kzalloc(sizeof(struct fib), GFP_ATOMIC); 1769 if (fib && hw_fib) { 1770 struct aac_aifcmd * aif; 1771 1772 fib->hw_fib_va = hw_fib; 1773 fib->dev = aac; 1774 aac_fib_init(fib); 1775 fib->type = FSAFS_NTC_FIB_CONTEXT; 1776 fib->size = sizeof (struct fib); 1777 fib->data = hw_fib->data; 1778 aif = (struct aac_aifcmd *)hw_fib->data; 1779 aif->command = cpu_to_le32(AifCmdEventNotify); 1780 aif->seqnum = cpu_to_le32(0xFFFFFFFF); 1781 ((__le32 *)aif->data)[0] = cpu_to_le32(AifEnExpEvent); 1782 ((__le32 *)aif->data)[1] = cpu_to_le32(AifExeFirmwarePanic); 1783 ((__le32 *)aif->data)[2] = cpu_to_le32(AifHighPriority); 1784 ((__le32 *)aif->data)[3] = cpu_to_le32(BlinkLED); 1785 1786 /* 1787 * Put the FIB onto the 1788 * fibctx's fibs 1789 */ 1790 list_add_tail(&fib->fiblink, &fibctx->fib_list); 1791 fibctx->count++; 1792 /* 1793 * Set the event to wake up the 1794 * thread that will waiting. 1795 */ 1796 complete(&fibctx->completion); 1797 } else { 1798 printk(KERN_WARNING "aifd: didn't allocate NewFib.\n"); 1799 kfree(fib); 1800 kfree(hw_fib); 1801 } 1802 entry = entry->next; 1803 } 1804 1805 spin_unlock_irqrestore(&aac->fib_lock, flagv); 1806 1807 if (BlinkLED < 0) { 1808 printk(KERN_ERR "%s: Host adapter is dead (or got a PCI error) %d\n", 1809 aac->name, BlinkLED); 1810 goto out; 1811 } 1812 1813 printk(KERN_ERR "%s: Host adapter BLINK LED 0x%x\n", aac->name, BlinkLED); 1814 1815 out: 1816 aac->in_reset = 0; 1817 return BlinkLED; 1818 } 1819 1820 static inline int is_safw_raid_volume(struct aac_dev *aac, int bus, int target) 1821 { 1822 return bus == CONTAINER_CHANNEL && target < aac->maximum_num_containers; 1823 } 1824 1825 static struct scsi_device *aac_lookup_safw_scsi_device(struct aac_dev *dev, 1826 int bus, 1827 int target) 1828 { 1829 if (bus != CONTAINER_CHANNEL) 1830 bus = aac_phys_to_logical(bus); 1831 1832 return scsi_device_lookup(dev->scsi_host_ptr, bus, target, 0); 1833 } 1834 1835 static int aac_add_safw_device(struct aac_dev *dev, int bus, int target) 1836 { 1837 if (bus != CONTAINER_CHANNEL) 1838 bus = aac_phys_to_logical(bus); 1839 1840 return scsi_add_device(dev->scsi_host_ptr, bus, target, 0); 1841 } 1842 1843 static void aac_put_safw_scsi_device(struct scsi_device *sdev) 1844 { 1845 if (sdev) 1846 scsi_device_put(sdev); 1847 } 1848 1849 static void aac_remove_safw_device(struct aac_dev *dev, int bus, int target) 1850 { 1851 struct scsi_device *sdev; 1852 1853 sdev = aac_lookup_safw_scsi_device(dev, bus, target); 1854 scsi_remove_device(sdev); 1855 aac_put_safw_scsi_device(sdev); 1856 } 1857 1858 static inline int aac_is_safw_scan_count_equal(struct aac_dev *dev, 1859 int bus, int target) 1860 { 1861 return dev->hba_map[bus][target].scan_counter == dev->scan_counter; 1862 } 1863 1864 static int aac_is_safw_target_valid(struct aac_dev *dev, int bus, int target) 1865 { 1866 if (is_safw_raid_volume(dev, bus, target)) 1867 return dev->fsa_dev[target].valid; 1868 else 1869 return aac_is_safw_scan_count_equal(dev, bus, target); 1870 } 1871 1872 static int aac_is_safw_device_exposed(struct aac_dev *dev, int bus, int target) 1873 { 1874 int is_exposed = 0; 1875 struct scsi_device *sdev; 1876 1877 sdev = aac_lookup_safw_scsi_device(dev, bus, target); 1878 if (sdev) 1879 is_exposed = 1; 1880 aac_put_safw_scsi_device(sdev); 1881 1882 return is_exposed; 1883 } 1884 1885 static int aac_update_safw_host_devices(struct aac_dev *dev) 1886 { 1887 int i; 1888 int bus; 1889 int target; 1890 int is_exposed = 0; 1891 int rcode = 0; 1892 1893 rcode = aac_setup_safw_adapter(dev); 1894 if (unlikely(rcode < 0)) { 1895 goto out; 1896 } 1897 1898 for (i = 0; i < AAC_BUS_TARGET_LOOP; i++) { 1899 1900 bus = get_bus_number(i); 1901 target = get_target_number(i); 1902 1903 is_exposed = aac_is_safw_device_exposed(dev, bus, target); 1904 1905 if (aac_is_safw_target_valid(dev, bus, target) && !is_exposed) 1906 aac_add_safw_device(dev, bus, target); 1907 else if (!aac_is_safw_target_valid(dev, bus, target) && 1908 is_exposed) 1909 aac_remove_safw_device(dev, bus, target); 1910 } 1911 out: 1912 return rcode; 1913 } 1914 1915 static int aac_scan_safw_host(struct aac_dev *dev) 1916 { 1917 int rcode = 0; 1918 1919 rcode = aac_update_safw_host_devices(dev); 1920 if (rcode) 1921 aac_schedule_safw_scan_worker(dev); 1922 1923 return rcode; 1924 } 1925 1926 int aac_scan_host(struct aac_dev *dev) 1927 { 1928 int rcode = 0; 1929 1930 mutex_lock(&dev->scan_mutex); 1931 if (dev->sa_firmware) 1932 rcode = aac_scan_safw_host(dev); 1933 else 1934 scsi_scan_host(dev->scsi_host_ptr); 1935 mutex_unlock(&dev->scan_mutex); 1936 1937 return rcode; 1938 } 1939 1940 void aac_src_reinit_aif_worker(struct work_struct *work) 1941 { 1942 struct aac_dev *dev = container_of(to_delayed_work(work), 1943 struct aac_dev, src_reinit_aif_worker); 1944 1945 wait_event(dev->scsi_host_ptr->host_wait, 1946 !scsi_host_in_recovery(dev->scsi_host_ptr)); 1947 aac_reinit_aif(dev, dev->cardtype); 1948 } 1949 1950 /** 1951 * aac_handle_sa_aif Handle a message from the firmware 1952 * @dev: Which adapter this fib is from 1953 * @fibptr: Pointer to fibptr from adapter 1954 * 1955 * This routine handles a driver notify fib from the adapter and 1956 * dispatches it to the appropriate routine for handling. 1957 */ 1958 static void aac_handle_sa_aif(struct aac_dev *dev, struct fib *fibptr) 1959 { 1960 int i; 1961 u32 events = 0; 1962 1963 if (fibptr->hbacmd_size & SA_AIF_HOTPLUG) 1964 events = SA_AIF_HOTPLUG; 1965 else if (fibptr->hbacmd_size & SA_AIF_HARDWARE) 1966 events = SA_AIF_HARDWARE; 1967 else if (fibptr->hbacmd_size & SA_AIF_PDEV_CHANGE) 1968 events = SA_AIF_PDEV_CHANGE; 1969 else if (fibptr->hbacmd_size & SA_AIF_LDEV_CHANGE) 1970 events = SA_AIF_LDEV_CHANGE; 1971 else if (fibptr->hbacmd_size & SA_AIF_BPSTAT_CHANGE) 1972 events = SA_AIF_BPSTAT_CHANGE; 1973 else if (fibptr->hbacmd_size & SA_AIF_BPCFG_CHANGE) 1974 events = SA_AIF_BPCFG_CHANGE; 1975 1976 switch (events) { 1977 case SA_AIF_HOTPLUG: 1978 case SA_AIF_HARDWARE: 1979 case SA_AIF_PDEV_CHANGE: 1980 case SA_AIF_LDEV_CHANGE: 1981 case SA_AIF_BPCFG_CHANGE: 1982 1983 aac_scan_host(dev); 1984 1985 break; 1986 1987 case SA_AIF_BPSTAT_CHANGE: 1988 /* currently do nothing */ 1989 break; 1990 } 1991 1992 for (i = 1; i <= 10; ++i) { 1993 events = src_readl(dev, MUnit.IDR); 1994 if (events & (1<<23)) { 1995 pr_warn(" AIF not cleared by firmware - %d/%d)\n", 1996 i, 10); 1997 ssleep(1); 1998 } 1999 } 2000 } 2001 2002 static int get_fib_count(struct aac_dev *dev) 2003 { 2004 unsigned int num = 0; 2005 struct list_head *entry; 2006 unsigned long flagv; 2007 2008 /* 2009 * Warning: no sleep allowed while 2010 * holding spinlock. We take the estimate 2011 * and pre-allocate a set of fibs outside the 2012 * lock. 2013 */ 2014 num = le32_to_cpu(dev->init->r7.adapter_fibs_size) 2015 / sizeof(struct hw_fib); /* some extra */ 2016 spin_lock_irqsave(&dev->fib_lock, flagv); 2017 entry = dev->fib_list.next; 2018 while (entry != &dev->fib_list) { 2019 entry = entry->next; 2020 ++num; 2021 } 2022 spin_unlock_irqrestore(&dev->fib_lock, flagv); 2023 2024 return num; 2025 } 2026 2027 static int fillup_pools(struct aac_dev *dev, struct hw_fib **hw_fib_pool, 2028 struct fib **fib_pool, 2029 unsigned int num) 2030 { 2031 struct hw_fib **hw_fib_p; 2032 struct fib **fib_p; 2033 2034 hw_fib_p = hw_fib_pool; 2035 fib_p = fib_pool; 2036 while (hw_fib_p < &hw_fib_pool[num]) { 2037 *(hw_fib_p) = kmalloc(sizeof(struct hw_fib), GFP_KERNEL); 2038 if (!(*(hw_fib_p++))) { 2039 --hw_fib_p; 2040 break; 2041 } 2042 2043 *(fib_p) = kmalloc(sizeof(struct fib), GFP_KERNEL); 2044 if (!(*(fib_p++))) { 2045 kfree(*(--hw_fib_p)); 2046 break; 2047 } 2048 } 2049 2050 /* 2051 * Get the actual number of allocated fibs 2052 */ 2053 num = hw_fib_p - hw_fib_pool; 2054 return num; 2055 } 2056 2057 static void wakeup_fibctx_threads(struct aac_dev *dev, 2058 struct hw_fib **hw_fib_pool, 2059 struct fib **fib_pool, 2060 struct fib *fib, 2061 struct hw_fib *hw_fib, 2062 unsigned int num) 2063 { 2064 unsigned long flagv; 2065 struct list_head *entry; 2066 struct hw_fib **hw_fib_p; 2067 struct fib **fib_p; 2068 u32 time_now, time_last; 2069 struct hw_fib *hw_newfib; 2070 struct fib *newfib; 2071 struct aac_fib_context *fibctx; 2072 2073 time_now = jiffies/HZ; 2074 spin_lock_irqsave(&dev->fib_lock, flagv); 2075 entry = dev->fib_list.next; 2076 /* 2077 * For each Context that is on the 2078 * fibctxList, make a copy of the 2079 * fib, and then set the event to wake up the 2080 * thread that is waiting for it. 2081 */ 2082 2083 hw_fib_p = hw_fib_pool; 2084 fib_p = fib_pool; 2085 while (entry != &dev->fib_list) { 2086 /* 2087 * Extract the fibctx 2088 */ 2089 fibctx = list_entry(entry, struct aac_fib_context, 2090 next); 2091 /* 2092 * Check if the queue is getting 2093 * backlogged 2094 */ 2095 if (fibctx->count > 20) { 2096 /* 2097 * It's *not* jiffies folks, 2098 * but jiffies / HZ so do not 2099 * panic ... 2100 */ 2101 time_last = fibctx->jiffies; 2102 /* 2103 * Has it been > 2 minutes 2104 * since the last read off 2105 * the queue? 2106 */ 2107 if ((time_now - time_last) > aif_timeout) { 2108 entry = entry->next; 2109 aac_close_fib_context(dev, fibctx); 2110 continue; 2111 } 2112 } 2113 /* 2114 * Warning: no sleep allowed while 2115 * holding spinlock 2116 */ 2117 if (hw_fib_p >= &hw_fib_pool[num]) { 2118 pr_warn("aifd: didn't allocate NewFib\n"); 2119 entry = entry->next; 2120 continue; 2121 } 2122 2123 hw_newfib = *hw_fib_p; 2124 *(hw_fib_p++) = NULL; 2125 newfib = *fib_p; 2126 *(fib_p++) = NULL; 2127 /* 2128 * Make the copy of the FIB 2129 */ 2130 memcpy(hw_newfib, hw_fib, sizeof(struct hw_fib)); 2131 memcpy(newfib, fib, sizeof(struct fib)); 2132 newfib->hw_fib_va = hw_newfib; 2133 /* 2134 * Put the FIB onto the 2135 * fibctx's fibs 2136 */ 2137 list_add_tail(&newfib->fiblink, &fibctx->fib_list); 2138 fibctx->count++; 2139 /* 2140 * Set the event to wake up the 2141 * thread that is waiting. 2142 */ 2143 complete(&fibctx->completion); 2144 2145 entry = entry->next; 2146 } 2147 /* 2148 * Set the status of this FIB 2149 */ 2150 *(__le32 *)hw_fib->data = cpu_to_le32(ST_OK); 2151 aac_fib_adapter_complete(fib, sizeof(u32)); 2152 spin_unlock_irqrestore(&dev->fib_lock, flagv); 2153 2154 } 2155 2156 static void aac_process_events(struct aac_dev *dev) 2157 { 2158 struct hw_fib *hw_fib; 2159 struct fib *fib; 2160 unsigned long flags; 2161 spinlock_t *t_lock; 2162 2163 t_lock = dev->queues->queue[HostNormCmdQueue].lock; 2164 spin_lock_irqsave(t_lock, flags); 2165 2166 while (!list_empty(&(dev->queues->queue[HostNormCmdQueue].cmdq))) { 2167 struct list_head *entry; 2168 struct aac_aifcmd *aifcmd; 2169 unsigned int num; 2170 struct hw_fib **hw_fib_pool, **hw_fib_p; 2171 struct fib **fib_pool, **fib_p; 2172 2173 set_current_state(TASK_RUNNING); 2174 2175 entry = dev->queues->queue[HostNormCmdQueue].cmdq.next; 2176 list_del(entry); 2177 2178 t_lock = dev->queues->queue[HostNormCmdQueue].lock; 2179 spin_unlock_irqrestore(t_lock, flags); 2180 2181 fib = list_entry(entry, struct fib, fiblink); 2182 hw_fib = fib->hw_fib_va; 2183 if (dev->sa_firmware) { 2184 /* Thor AIF */ 2185 aac_handle_sa_aif(dev, fib); 2186 aac_fib_adapter_complete(fib, (u16)sizeof(u32)); 2187 goto free_fib; 2188 } 2189 /* 2190 * We will process the FIB here or pass it to a 2191 * worker thread that is TBD. We Really can't 2192 * do anything at this point since we don't have 2193 * anything defined for this thread to do. 2194 */ 2195 memset(fib, 0, sizeof(struct fib)); 2196 fib->type = FSAFS_NTC_FIB_CONTEXT; 2197 fib->size = sizeof(struct fib); 2198 fib->hw_fib_va = hw_fib; 2199 fib->data = hw_fib->data; 2200 fib->dev = dev; 2201 /* 2202 * We only handle AifRequest fibs from the adapter. 2203 */ 2204 2205 aifcmd = (struct aac_aifcmd *) hw_fib->data; 2206 if (aifcmd->command == cpu_to_le32(AifCmdDriverNotify)) { 2207 /* Handle Driver Notify Events */ 2208 aac_handle_aif(dev, fib); 2209 *(__le32 *)hw_fib->data = cpu_to_le32(ST_OK); 2210 aac_fib_adapter_complete(fib, (u16)sizeof(u32)); 2211 goto free_fib; 2212 } 2213 /* 2214 * The u32 here is important and intended. We are using 2215 * 32bit wrapping time to fit the adapter field 2216 */ 2217 2218 /* Sniff events */ 2219 if (aifcmd->command == cpu_to_le32(AifCmdEventNotify) 2220 || aifcmd->command == cpu_to_le32(AifCmdJobProgress)) { 2221 aac_handle_aif(dev, fib); 2222 } 2223 2224 /* 2225 * get number of fibs to process 2226 */ 2227 num = get_fib_count(dev); 2228 if (!num) 2229 goto free_fib; 2230 2231 hw_fib_pool = kmalloc_array(num, sizeof(struct hw_fib *), 2232 GFP_KERNEL); 2233 if (!hw_fib_pool) 2234 goto free_fib; 2235 2236 fib_pool = kmalloc_array(num, sizeof(struct fib *), GFP_KERNEL); 2237 if (!fib_pool) 2238 goto free_hw_fib_pool; 2239 2240 /* 2241 * Fill up fib pointer pools with actual fibs 2242 * and hw_fibs 2243 */ 2244 num = fillup_pools(dev, hw_fib_pool, fib_pool, num); 2245 if (!num) 2246 goto free_mem; 2247 2248 /* 2249 * wakeup the thread that is waiting for 2250 * the response from fw (ioctl) 2251 */ 2252 wakeup_fibctx_threads(dev, hw_fib_pool, fib_pool, 2253 fib, hw_fib, num); 2254 2255 free_mem: 2256 /* Free up the remaining resources */ 2257 hw_fib_p = hw_fib_pool; 2258 fib_p = fib_pool; 2259 while (hw_fib_p < &hw_fib_pool[num]) { 2260 kfree(*hw_fib_p); 2261 kfree(*fib_p); 2262 ++fib_p; 2263 ++hw_fib_p; 2264 } 2265 kfree(fib_pool); 2266 free_hw_fib_pool: 2267 kfree(hw_fib_pool); 2268 free_fib: 2269 kfree(fib); 2270 t_lock = dev->queues->queue[HostNormCmdQueue].lock; 2271 spin_lock_irqsave(t_lock, flags); 2272 } 2273 /* 2274 * There are no more AIF's 2275 */ 2276 t_lock = dev->queues->queue[HostNormCmdQueue].lock; 2277 spin_unlock_irqrestore(t_lock, flags); 2278 } 2279 2280 static int aac_send_wellness_command(struct aac_dev *dev, char *wellness_str, 2281 u32 datasize) 2282 { 2283 struct aac_srb *srbcmd; 2284 struct sgmap64 *sg64; 2285 dma_addr_t addr; 2286 char *dma_buf; 2287 struct fib *fibptr; 2288 int ret = -ENOMEM; 2289 u32 vbus, vid; 2290 2291 fibptr = aac_fib_alloc(dev); 2292 if (!fibptr) 2293 goto out; 2294 2295 dma_buf = dma_alloc_coherent(&dev->pdev->dev, datasize, &addr, 2296 GFP_KERNEL); 2297 if (!dma_buf) 2298 goto fib_free_out; 2299 2300 aac_fib_init(fibptr); 2301 2302 vbus = (u32)le16_to_cpu(dev->supplement_adapter_info.virt_device_bus); 2303 vid = (u32)le16_to_cpu(dev->supplement_adapter_info.virt_device_target); 2304 2305 srbcmd = (struct aac_srb *)fib_data(fibptr); 2306 2307 srbcmd->function = cpu_to_le32(SRBF_ExecuteScsi); 2308 srbcmd->channel = cpu_to_le32(vbus); 2309 srbcmd->id = cpu_to_le32(vid); 2310 srbcmd->lun = 0; 2311 srbcmd->flags = cpu_to_le32(SRB_DataOut); 2312 srbcmd->timeout = cpu_to_le32(10); 2313 srbcmd->retry_limit = 0; 2314 srbcmd->cdb_size = cpu_to_le32(12); 2315 srbcmd->count = cpu_to_le32(datasize); 2316 2317 memset(srbcmd->cdb, 0, sizeof(srbcmd->cdb)); 2318 srbcmd->cdb[0] = BMIC_OUT; 2319 srbcmd->cdb[6] = WRITE_HOST_WELLNESS; 2320 memcpy(dma_buf, (char *)wellness_str, datasize); 2321 2322 sg64 = (struct sgmap64 *)&srbcmd->sg; 2323 sg64->count = cpu_to_le32(1); 2324 sg64->sg[0].addr[1] = cpu_to_le32((u32)(((addr) >> 16) >> 16)); 2325 sg64->sg[0].addr[0] = cpu_to_le32((u32)(addr & 0xffffffff)); 2326 sg64->sg[0].count = cpu_to_le32(datasize); 2327 2328 ret = aac_fib_send(ScsiPortCommand64, fibptr, sizeof(struct aac_srb), 2329 FsaNormal, 1, 1, NULL, NULL); 2330 2331 dma_free_coherent(&dev->pdev->dev, datasize, dma_buf, addr); 2332 2333 /* 2334 * Do not set XferState to zero unless 2335 * receives a response from F/W 2336 */ 2337 if (ret >= 0) 2338 aac_fib_complete(fibptr); 2339 2340 /* 2341 * FIB should be freed only after 2342 * getting the response from the F/W 2343 */ 2344 if (ret != -ERESTARTSYS) 2345 goto fib_free_out; 2346 2347 out: 2348 return ret; 2349 fib_free_out: 2350 aac_fib_free(fibptr); 2351 goto out; 2352 } 2353 2354 static int aac_send_safw_hostttime(struct aac_dev *dev, struct timespec64 *now) 2355 { 2356 struct tm cur_tm; 2357 char wellness_str[] = "<HW>TD\010\0\0\0\0\0\0\0\0\0DW\0\0ZZ"; 2358 u32 datasize = sizeof(wellness_str); 2359 time64_t local_time; 2360 int ret = -ENODEV; 2361 2362 if (!dev->sa_firmware) 2363 goto out; 2364 2365 local_time = (now->tv_sec - (sys_tz.tz_minuteswest * 60)); 2366 time64_to_tm(local_time, 0, &cur_tm); 2367 cur_tm.tm_mon += 1; 2368 cur_tm.tm_year += 1900; 2369 wellness_str[8] = bin2bcd(cur_tm.tm_hour); 2370 wellness_str[9] = bin2bcd(cur_tm.tm_min); 2371 wellness_str[10] = bin2bcd(cur_tm.tm_sec); 2372 wellness_str[12] = bin2bcd(cur_tm.tm_mon); 2373 wellness_str[13] = bin2bcd(cur_tm.tm_mday); 2374 wellness_str[14] = bin2bcd(cur_tm.tm_year / 100); 2375 wellness_str[15] = bin2bcd(cur_tm.tm_year % 100); 2376 2377 ret = aac_send_wellness_command(dev, wellness_str, datasize); 2378 2379 out: 2380 return ret; 2381 } 2382 2383 static int aac_send_hosttime(struct aac_dev *dev, struct timespec64 *now) 2384 { 2385 int ret = -ENOMEM; 2386 struct fib *fibptr; 2387 __le32 *info; 2388 2389 fibptr = aac_fib_alloc(dev); 2390 if (!fibptr) 2391 goto out; 2392 2393 aac_fib_init(fibptr); 2394 info = (__le32 *)fib_data(fibptr); 2395 *info = cpu_to_le32(now->tv_sec); /* overflow in y2106 */ 2396 ret = aac_fib_send(SendHostTime, fibptr, sizeof(*info), FsaNormal, 2397 1, 1, NULL, NULL); 2398 2399 /* 2400 * Do not set XferState to zero unless 2401 * receives a response from F/W 2402 */ 2403 if (ret >= 0) 2404 aac_fib_complete(fibptr); 2405 2406 /* 2407 * FIB should be freed only after 2408 * getting the response from the F/W 2409 */ 2410 if (ret != -ERESTARTSYS) 2411 aac_fib_free(fibptr); 2412 2413 out: 2414 return ret; 2415 } 2416 2417 /** 2418 * aac_command_thread - command processing thread 2419 * @dev: Adapter to monitor 2420 * 2421 * Waits on the commandready event in it's queue. When the event gets set 2422 * it will pull FIBs off it's queue. It will continue to pull FIBs off 2423 * until the queue is empty. When the queue is empty it will wait for 2424 * more FIBs. 2425 */ 2426 2427 int aac_command_thread(void *data) 2428 { 2429 struct aac_dev *dev = data; 2430 DECLARE_WAITQUEUE(wait, current); 2431 unsigned long next_jiffies = jiffies + HZ; 2432 unsigned long next_check_jiffies = next_jiffies; 2433 long difference = HZ; 2434 2435 /* 2436 * We can only have one thread per adapter for AIF's. 2437 */ 2438 if (dev->aif_thread) 2439 return -EINVAL; 2440 2441 /* 2442 * Let the DPC know it has a place to send the AIF's to. 2443 */ 2444 dev->aif_thread = 1; 2445 add_wait_queue(&dev->queues->queue[HostNormCmdQueue].cmdready, &wait); 2446 set_current_state(TASK_INTERRUPTIBLE); 2447 dprintk ((KERN_INFO "aac_command_thread start\n")); 2448 while (1) { 2449 2450 aac_process_events(dev); 2451 2452 /* 2453 * Background activity 2454 */ 2455 if ((time_before(next_check_jiffies,next_jiffies)) 2456 && ((difference = next_check_jiffies - jiffies) <= 0)) { 2457 next_check_jiffies = next_jiffies; 2458 if (aac_adapter_check_health(dev) == 0) { 2459 difference = ((long)(unsigned)check_interval) 2460 * HZ; 2461 next_check_jiffies = jiffies + difference; 2462 } else if (!dev->queues) 2463 break; 2464 } 2465 if (!time_before(next_check_jiffies,next_jiffies) 2466 && ((difference = next_jiffies - jiffies) <= 0)) { 2467 struct timespec64 now; 2468 int ret; 2469 2470 /* Don't even try to talk to adapter if its sick */ 2471 ret = aac_adapter_check_health(dev); 2472 if (ret || !dev->queues) 2473 break; 2474 next_check_jiffies = jiffies 2475 + ((long)(unsigned)check_interval) 2476 * HZ; 2477 ktime_get_real_ts64(&now); 2478 2479 /* Synchronize our watches */ 2480 if (((NSEC_PER_SEC - (NSEC_PER_SEC / HZ)) > now.tv_nsec) 2481 && (now.tv_nsec > (NSEC_PER_SEC / HZ))) 2482 difference = HZ + HZ / 2 - 2483 now.tv_nsec / (NSEC_PER_SEC / HZ); 2484 else { 2485 if (now.tv_nsec > NSEC_PER_SEC / 2) 2486 ++now.tv_sec; 2487 2488 if (dev->sa_firmware) 2489 ret = 2490 aac_send_safw_hostttime(dev, &now); 2491 else 2492 ret = aac_send_hosttime(dev, &now); 2493 2494 difference = (long)(unsigned)update_interval*HZ; 2495 } 2496 next_jiffies = jiffies + difference; 2497 if (time_before(next_check_jiffies,next_jiffies)) 2498 difference = next_check_jiffies - jiffies; 2499 } 2500 if (difference <= 0) 2501 difference = 1; 2502 set_current_state(TASK_INTERRUPTIBLE); 2503 2504 if (kthread_should_stop()) 2505 break; 2506 2507 /* 2508 * we probably want usleep_range() here instead of the 2509 * jiffies computation 2510 */ 2511 schedule_timeout(difference); 2512 2513 if (kthread_should_stop()) 2514 break; 2515 } 2516 if (dev->queues) 2517 remove_wait_queue(&dev->queues->queue[HostNormCmdQueue].cmdready, &wait); 2518 dev->aif_thread = 0; 2519 return 0; 2520 } 2521 2522 int aac_acquire_irq(struct aac_dev *dev) 2523 { 2524 int i; 2525 int j; 2526 int ret = 0; 2527 2528 if (!dev->sync_mode && dev->msi_enabled && dev->max_msix > 1) { 2529 for (i = 0; i < dev->max_msix; i++) { 2530 dev->aac_msix[i].vector_no = i; 2531 dev->aac_msix[i].dev = dev; 2532 if (request_irq(pci_irq_vector(dev->pdev, i), 2533 dev->a_ops.adapter_intr, 2534 0, "aacraid", &(dev->aac_msix[i]))) { 2535 printk(KERN_ERR "%s%d: Failed to register IRQ for vector %d.\n", 2536 dev->name, dev->id, i); 2537 for (j = 0 ; j < i ; j++) 2538 free_irq(pci_irq_vector(dev->pdev, j), 2539 &(dev->aac_msix[j])); 2540 pci_disable_msix(dev->pdev); 2541 ret = -1; 2542 } 2543 } 2544 } else { 2545 dev->aac_msix[0].vector_no = 0; 2546 dev->aac_msix[0].dev = dev; 2547 2548 if (request_irq(dev->pdev->irq, dev->a_ops.adapter_intr, 2549 IRQF_SHARED, "aacraid", 2550 &(dev->aac_msix[0])) < 0) { 2551 if (dev->msi) 2552 pci_disable_msi(dev->pdev); 2553 printk(KERN_ERR "%s%d: Interrupt unavailable.\n", 2554 dev->name, dev->id); 2555 ret = -1; 2556 } 2557 } 2558 return ret; 2559 } 2560 2561 void aac_free_irq(struct aac_dev *dev) 2562 { 2563 int i; 2564 2565 if (aac_is_src(dev)) { 2566 if (dev->max_msix > 1) { 2567 for (i = 0; i < dev->max_msix; i++) 2568 free_irq(pci_irq_vector(dev->pdev, i), 2569 &(dev->aac_msix[i])); 2570 } else { 2571 free_irq(dev->pdev->irq, &(dev->aac_msix[0])); 2572 } 2573 } else { 2574 free_irq(dev->pdev->irq, dev); 2575 } 2576 if (dev->msi) 2577 pci_disable_msi(dev->pdev); 2578 else if (dev->max_msix > 1) 2579 pci_disable_msix(dev->pdev); 2580 } 2581