1 /* 2 * Adaptec AAC series RAID controller driver 3 * (c) Copyright 2001 Red Hat Inc. 4 * 5 * based on the old aacraid driver that is.. 6 * Adaptec aacraid device driver for Linux. 7 * 8 * Copyright (c) 2000-2010 Adaptec, Inc. 9 * 2010-2015 PMC-Sierra, Inc. (aacraid@pmc-sierra.com) 10 * 2016-2017 Microsemi Corp. (aacraid@microsemi.com) 11 * 12 * This program is free software; you can redistribute it and/or modify 13 * it under the terms of the GNU General Public License as published by 14 * the Free Software Foundation; either version 2, or (at your option) 15 * any later version. 16 * 17 * This program is distributed in the hope that it will be useful, 18 * but WITHOUT ANY WARRANTY; without even the implied warranty of 19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 20 * GNU General Public License for more details. 21 * 22 * You should have received a copy of the GNU General Public License 23 * along with this program; see the file COPYING. If not, write to 24 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. 25 * 26 * Module Name: 27 * commsup.c 28 * 29 * Abstract: Contain all routines that are required for FSA host/adapter 30 * communication. 31 * 32 */ 33 34 #include <linux/kernel.h> 35 #include <linux/init.h> 36 #include <linux/types.h> 37 #include <linux/sched.h> 38 #include <linux/pci.h> 39 #include <linux/spinlock.h> 40 #include <linux/slab.h> 41 #include <linux/completion.h> 42 #include <linux/blkdev.h> 43 #include <linux/delay.h> 44 #include <linux/kthread.h> 45 #include <linux/interrupt.h> 46 #include <linux/semaphore.h> 47 #include <linux/bcd.h> 48 #include <scsi/scsi.h> 49 #include <scsi/scsi_host.h> 50 #include <scsi/scsi_device.h> 51 #include <scsi/scsi_cmnd.h> 52 53 #include "aacraid.h" 54 55 /** 56 * fib_map_alloc - allocate the fib objects 57 * @dev: Adapter to allocate for 58 * 59 * Allocate and map the shared PCI space for the FIB blocks used to 60 * talk to the Adaptec firmware. 61 */ 62 63 static int fib_map_alloc(struct aac_dev *dev) 64 { 65 if (dev->max_fib_size > AAC_MAX_NATIVE_SIZE) 66 dev->max_cmd_size = AAC_MAX_NATIVE_SIZE; 67 else 68 dev->max_cmd_size = dev->max_fib_size; 69 if (dev->max_fib_size < AAC_MAX_NATIVE_SIZE) { 70 dev->max_cmd_size = AAC_MAX_NATIVE_SIZE; 71 } else { 72 dev->max_cmd_size = dev->max_fib_size; 73 } 74 75 dprintk((KERN_INFO 76 "allocate hardware fibs dma_alloc_coherent(%p, %d * (%d + %d), %p)\n", 77 &dev->pdev->dev, dev->max_cmd_size, dev->scsi_host_ptr->can_queue, 78 AAC_NUM_MGT_FIB, &dev->hw_fib_pa)); 79 dev->hw_fib_va = dma_alloc_coherent(&dev->pdev->dev, 80 (dev->max_cmd_size + sizeof(struct aac_fib_xporthdr)) 81 * (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB) + (ALIGN32 - 1), 82 &dev->hw_fib_pa, GFP_KERNEL); 83 if (dev->hw_fib_va == NULL) 84 return -ENOMEM; 85 return 0; 86 } 87 88 /** 89 * aac_fib_map_free - free the fib objects 90 * @dev: Adapter to free 91 * 92 * Free the PCI mappings and the memory allocated for FIB blocks 93 * on this adapter. 94 */ 95 96 void aac_fib_map_free(struct aac_dev *dev) 97 { 98 size_t alloc_size; 99 size_t fib_size; 100 int num_fibs; 101 102 if(!dev->hw_fib_va || !dev->max_cmd_size) 103 return; 104 105 num_fibs = dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB; 106 fib_size = dev->max_fib_size + sizeof(struct aac_fib_xporthdr); 107 alloc_size = fib_size * num_fibs + ALIGN32 - 1; 108 109 dma_free_coherent(&dev->pdev->dev, alloc_size, dev->hw_fib_va, 110 dev->hw_fib_pa); 111 112 dev->hw_fib_va = NULL; 113 dev->hw_fib_pa = 0; 114 } 115 116 void aac_fib_vector_assign(struct aac_dev *dev) 117 { 118 u32 i = 0; 119 u32 vector = 1; 120 struct fib *fibptr = NULL; 121 122 for (i = 0, fibptr = &dev->fibs[i]; 123 i < (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB); 124 i++, fibptr++) { 125 if ((dev->max_msix == 1) || 126 (i > ((dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB - 1) 127 - dev->vector_cap))) { 128 fibptr->vector_no = 0; 129 } else { 130 fibptr->vector_no = vector; 131 vector++; 132 if (vector == dev->max_msix) 133 vector = 1; 134 } 135 } 136 } 137 138 /** 139 * aac_fib_setup - setup the fibs 140 * @dev: Adapter to set up 141 * 142 * Allocate the PCI space for the fibs, map it and then initialise the 143 * fib area, the unmapped fib data and also the free list 144 */ 145 146 int aac_fib_setup(struct aac_dev * dev) 147 { 148 struct fib *fibptr; 149 struct hw_fib *hw_fib; 150 dma_addr_t hw_fib_pa; 151 int i; 152 u32 max_cmds; 153 154 while (((i = fib_map_alloc(dev)) == -ENOMEM) 155 && (dev->scsi_host_ptr->can_queue > (64 - AAC_NUM_MGT_FIB))) { 156 max_cmds = (dev->scsi_host_ptr->can_queue+AAC_NUM_MGT_FIB) >> 1; 157 dev->scsi_host_ptr->can_queue = max_cmds - AAC_NUM_MGT_FIB; 158 if (dev->comm_interface != AAC_COMM_MESSAGE_TYPE3) 159 dev->init->r7.max_io_commands = cpu_to_le32(max_cmds); 160 } 161 if (i<0) 162 return -ENOMEM; 163 164 memset(dev->hw_fib_va, 0, 165 (dev->max_cmd_size + sizeof(struct aac_fib_xporthdr)) * 166 (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB)); 167 168 /* 32 byte alignment for PMC */ 169 hw_fib_pa = (dev->hw_fib_pa + (ALIGN32 - 1)) & ~(ALIGN32 - 1); 170 hw_fib = (struct hw_fib *)((unsigned char *)dev->hw_fib_va + 171 (hw_fib_pa - dev->hw_fib_pa)); 172 173 /* add Xport header */ 174 hw_fib = (struct hw_fib *)((unsigned char *)hw_fib + 175 sizeof(struct aac_fib_xporthdr)); 176 hw_fib_pa += sizeof(struct aac_fib_xporthdr); 177 178 /* 179 * Initialise the fibs 180 */ 181 for (i = 0, fibptr = &dev->fibs[i]; 182 i < (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB); 183 i++, fibptr++) 184 { 185 fibptr->flags = 0; 186 fibptr->size = sizeof(struct fib); 187 fibptr->dev = dev; 188 fibptr->hw_fib_va = hw_fib; 189 fibptr->data = (void *) fibptr->hw_fib_va->data; 190 fibptr->next = fibptr+1; /* Forward chain the fibs */ 191 sema_init(&fibptr->event_wait, 0); 192 spin_lock_init(&fibptr->event_lock); 193 hw_fib->header.XferState = cpu_to_le32(0xffffffff); 194 hw_fib->header.SenderSize = 195 cpu_to_le16(dev->max_fib_size); /* ?? max_cmd_size */ 196 fibptr->hw_fib_pa = hw_fib_pa; 197 fibptr->hw_sgl_pa = hw_fib_pa + 198 offsetof(struct aac_hba_cmd_req, sge[2]); 199 /* 200 * one element is for the ptr to the separate sg list, 201 * second element for 32 byte alignment 202 */ 203 fibptr->hw_error_pa = hw_fib_pa + 204 offsetof(struct aac_native_hba, resp.resp_bytes[0]); 205 206 hw_fib = (struct hw_fib *)((unsigned char *)hw_fib + 207 dev->max_cmd_size + sizeof(struct aac_fib_xporthdr)); 208 hw_fib_pa = hw_fib_pa + 209 dev->max_cmd_size + sizeof(struct aac_fib_xporthdr); 210 } 211 212 /* 213 *Assign vector numbers to fibs 214 */ 215 aac_fib_vector_assign(dev); 216 217 /* 218 * Add the fib chain to the free list 219 */ 220 dev->fibs[dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB - 1].next = NULL; 221 /* 222 * Set 8 fibs aside for management tools 223 */ 224 dev->free_fib = &dev->fibs[dev->scsi_host_ptr->can_queue]; 225 return 0; 226 } 227 228 /** 229 * aac_fib_alloc_tag-allocate a fib using tags 230 * @dev: Adapter to allocate the fib for 231 * 232 * Allocate a fib from the adapter fib pool using tags 233 * from the blk layer. 234 */ 235 236 struct fib *aac_fib_alloc_tag(struct aac_dev *dev, struct scsi_cmnd *scmd) 237 { 238 struct fib *fibptr; 239 240 fibptr = &dev->fibs[scmd->request->tag]; 241 /* 242 * Null out fields that depend on being zero at the start of 243 * each I/O 244 */ 245 fibptr->hw_fib_va->header.XferState = 0; 246 fibptr->type = FSAFS_NTC_FIB_CONTEXT; 247 fibptr->callback_data = NULL; 248 fibptr->callback = NULL; 249 250 return fibptr; 251 } 252 253 /** 254 * aac_fib_alloc - allocate a fib 255 * @dev: Adapter to allocate the fib for 256 * 257 * Allocate a fib from the adapter fib pool. If the pool is empty we 258 * return NULL. 259 */ 260 261 struct fib *aac_fib_alloc(struct aac_dev *dev) 262 { 263 struct fib * fibptr; 264 unsigned long flags; 265 spin_lock_irqsave(&dev->fib_lock, flags); 266 fibptr = dev->free_fib; 267 if(!fibptr){ 268 spin_unlock_irqrestore(&dev->fib_lock, flags); 269 return fibptr; 270 } 271 dev->free_fib = fibptr->next; 272 spin_unlock_irqrestore(&dev->fib_lock, flags); 273 /* 274 * Set the proper node type code and node byte size 275 */ 276 fibptr->type = FSAFS_NTC_FIB_CONTEXT; 277 fibptr->size = sizeof(struct fib); 278 /* 279 * Null out fields that depend on being zero at the start of 280 * each I/O 281 */ 282 fibptr->hw_fib_va->header.XferState = 0; 283 fibptr->flags = 0; 284 fibptr->callback = NULL; 285 fibptr->callback_data = NULL; 286 287 return fibptr; 288 } 289 290 /** 291 * aac_fib_free - free a fib 292 * @fibptr: fib to free up 293 * 294 * Frees up a fib and places it on the appropriate queue 295 */ 296 297 void aac_fib_free(struct fib *fibptr) 298 { 299 unsigned long flags; 300 301 if (fibptr->done == 2) 302 return; 303 304 spin_lock_irqsave(&fibptr->dev->fib_lock, flags); 305 if (unlikely(fibptr->flags & FIB_CONTEXT_FLAG_TIMED_OUT)) 306 aac_config.fib_timeouts++; 307 if (!(fibptr->flags & FIB_CONTEXT_FLAG_NATIVE_HBA) && 308 fibptr->hw_fib_va->header.XferState != 0) { 309 printk(KERN_WARNING "aac_fib_free, XferState != 0, fibptr = 0x%p, XferState = 0x%x\n", 310 (void*)fibptr, 311 le32_to_cpu(fibptr->hw_fib_va->header.XferState)); 312 } 313 fibptr->next = fibptr->dev->free_fib; 314 fibptr->dev->free_fib = fibptr; 315 spin_unlock_irqrestore(&fibptr->dev->fib_lock, flags); 316 } 317 318 /** 319 * aac_fib_init - initialise a fib 320 * @fibptr: The fib to initialize 321 * 322 * Set up the generic fib fields ready for use 323 */ 324 325 void aac_fib_init(struct fib *fibptr) 326 { 327 struct hw_fib *hw_fib = fibptr->hw_fib_va; 328 329 memset(&hw_fib->header, 0, sizeof(struct aac_fibhdr)); 330 hw_fib->header.StructType = FIB_MAGIC; 331 hw_fib->header.Size = cpu_to_le16(fibptr->dev->max_fib_size); 332 hw_fib->header.XferState = cpu_to_le32(HostOwned | FibInitialized | FibEmpty | FastResponseCapable); 333 hw_fib->header.u.ReceiverFibAddress = cpu_to_le32(fibptr->hw_fib_pa); 334 hw_fib->header.SenderSize = cpu_to_le16(fibptr->dev->max_fib_size); 335 } 336 337 /** 338 * fib_deallocate - deallocate a fib 339 * @fibptr: fib to deallocate 340 * 341 * Will deallocate and return to the free pool the FIB pointed to by the 342 * caller. 343 */ 344 345 static void fib_dealloc(struct fib * fibptr) 346 { 347 struct hw_fib *hw_fib = fibptr->hw_fib_va; 348 hw_fib->header.XferState = 0; 349 } 350 351 /* 352 * Commuication primitives define and support the queuing method we use to 353 * support host to adapter commuication. All queue accesses happen through 354 * these routines and are the only routines which have a knowledge of the 355 * how these queues are implemented. 356 */ 357 358 /** 359 * aac_get_entry - get a queue entry 360 * @dev: Adapter 361 * @qid: Queue Number 362 * @entry: Entry return 363 * @index: Index return 364 * @nonotify: notification control 365 * 366 * With a priority the routine returns a queue entry if the queue has free entries. If the queue 367 * is full(no free entries) than no entry is returned and the function returns 0 otherwise 1 is 368 * returned. 369 */ 370 371 static int aac_get_entry (struct aac_dev * dev, u32 qid, struct aac_entry **entry, u32 * index, unsigned long *nonotify) 372 { 373 struct aac_queue * q; 374 unsigned long idx; 375 376 /* 377 * All of the queues wrap when they reach the end, so we check 378 * to see if they have reached the end and if they have we just 379 * set the index back to zero. This is a wrap. You could or off 380 * the high bits in all updates but this is a bit faster I think. 381 */ 382 383 q = &dev->queues->queue[qid]; 384 385 idx = *index = le32_to_cpu(*(q->headers.producer)); 386 /* Interrupt Moderation, only interrupt for first two entries */ 387 if (idx != le32_to_cpu(*(q->headers.consumer))) { 388 if (--idx == 0) { 389 if (qid == AdapNormCmdQueue) 390 idx = ADAP_NORM_CMD_ENTRIES; 391 else 392 idx = ADAP_NORM_RESP_ENTRIES; 393 } 394 if (idx != le32_to_cpu(*(q->headers.consumer))) 395 *nonotify = 1; 396 } 397 398 if (qid == AdapNormCmdQueue) { 399 if (*index >= ADAP_NORM_CMD_ENTRIES) 400 *index = 0; /* Wrap to front of the Producer Queue. */ 401 } else { 402 if (*index >= ADAP_NORM_RESP_ENTRIES) 403 *index = 0; /* Wrap to front of the Producer Queue. */ 404 } 405 406 /* Queue is full */ 407 if ((*index + 1) == le32_to_cpu(*(q->headers.consumer))) { 408 printk(KERN_WARNING "Queue %d full, %u outstanding.\n", 409 qid, atomic_read(&q->numpending)); 410 return 0; 411 } else { 412 *entry = q->base + *index; 413 return 1; 414 } 415 } 416 417 /** 418 * aac_queue_get - get the next free QE 419 * @dev: Adapter 420 * @index: Returned index 421 * @priority: Priority of fib 422 * @fib: Fib to associate with the queue entry 423 * @wait: Wait if queue full 424 * @fibptr: Driver fib object to go with fib 425 * @nonotify: Don't notify the adapter 426 * 427 * Gets the next free QE off the requested priorty adapter command 428 * queue and associates the Fib with the QE. The QE represented by 429 * index is ready to insert on the queue when this routine returns 430 * success. 431 */ 432 433 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) 434 { 435 struct aac_entry * entry = NULL; 436 int map = 0; 437 438 if (qid == AdapNormCmdQueue) { 439 /* if no entries wait for some if caller wants to */ 440 while (!aac_get_entry(dev, qid, &entry, index, nonotify)) { 441 printk(KERN_ERR "GetEntries failed\n"); 442 } 443 /* 444 * Setup queue entry with a command, status and fib mapped 445 */ 446 entry->size = cpu_to_le32(le16_to_cpu(hw_fib->header.Size)); 447 map = 1; 448 } else { 449 while (!aac_get_entry(dev, qid, &entry, index, nonotify)) { 450 /* if no entries wait for some if caller wants to */ 451 } 452 /* 453 * Setup queue entry with command, status and fib mapped 454 */ 455 entry->size = cpu_to_le32(le16_to_cpu(hw_fib->header.Size)); 456 entry->addr = hw_fib->header.SenderFibAddress; 457 /* Restore adapters pointer to the FIB */ 458 hw_fib->header.u.ReceiverFibAddress = hw_fib->header.SenderFibAddress; /* Let the adapter now where to find its data */ 459 map = 0; 460 } 461 /* 462 * If MapFib is true than we need to map the Fib and put pointers 463 * in the queue entry. 464 */ 465 if (map) 466 entry->addr = cpu_to_le32(fibptr->hw_fib_pa); 467 return 0; 468 } 469 470 /* 471 * Define the highest level of host to adapter communication routines. 472 * These routines will support host to adapter FS commuication. These 473 * routines have no knowledge of the commuication method used. This level 474 * sends and receives FIBs. This level has no knowledge of how these FIBs 475 * get passed back and forth. 476 */ 477 478 /** 479 * aac_fib_send - send a fib to the adapter 480 * @command: Command to send 481 * @fibptr: The fib 482 * @size: Size of fib data area 483 * @priority: Priority of Fib 484 * @wait: Async/sync select 485 * @reply: True if a reply is wanted 486 * @callback: Called with reply 487 * @callback_data: Passed to callback 488 * 489 * Sends the requested FIB to the adapter and optionally will wait for a 490 * response FIB. If the caller does not wish to wait for a response than 491 * an event to wait on must be supplied. This event will be set when a 492 * response FIB is received from the adapter. 493 */ 494 495 int aac_fib_send(u16 command, struct fib *fibptr, unsigned long size, 496 int priority, int wait, int reply, fib_callback callback, 497 void *callback_data) 498 { 499 struct aac_dev * dev = fibptr->dev; 500 struct hw_fib * hw_fib = fibptr->hw_fib_va; 501 unsigned long flags = 0; 502 unsigned long mflags = 0; 503 unsigned long sflags = 0; 504 505 if (!(hw_fib->header.XferState & cpu_to_le32(HostOwned))) 506 return -EBUSY; 507 508 if (hw_fib->header.XferState & cpu_to_le32(AdapterProcessed)) 509 return -EINVAL; 510 511 /* 512 * There are 5 cases with the wait and response requested flags. 513 * The only invalid cases are if the caller requests to wait and 514 * does not request a response and if the caller does not want a 515 * response and the Fib is not allocated from pool. If a response 516 * is not requesed the Fib will just be deallocaed by the DPC 517 * routine when the response comes back from the adapter. No 518 * further processing will be done besides deleting the Fib. We 519 * will have a debug mode where the adapter can notify the host 520 * it had a problem and the host can log that fact. 521 */ 522 fibptr->flags = 0; 523 if (wait && !reply) { 524 return -EINVAL; 525 } else if (!wait && reply) { 526 hw_fib->header.XferState |= cpu_to_le32(Async | ResponseExpected); 527 FIB_COUNTER_INCREMENT(aac_config.AsyncSent); 528 } else if (!wait && !reply) { 529 hw_fib->header.XferState |= cpu_to_le32(NoResponseExpected); 530 FIB_COUNTER_INCREMENT(aac_config.NoResponseSent); 531 } else if (wait && reply) { 532 hw_fib->header.XferState |= cpu_to_le32(ResponseExpected); 533 FIB_COUNTER_INCREMENT(aac_config.NormalSent); 534 } 535 /* 536 * Map the fib into 32bits by using the fib number 537 */ 538 539 hw_fib->header.SenderFibAddress = 540 cpu_to_le32(((u32)(fibptr - dev->fibs)) << 2); 541 542 /* use the same shifted value for handle to be compatible 543 * with the new native hba command handle 544 */ 545 hw_fib->header.Handle = 546 cpu_to_le32((((u32)(fibptr - dev->fibs)) << 2) + 1); 547 548 /* 549 * Set FIB state to indicate where it came from and if we want a 550 * response from the adapter. Also load the command from the 551 * caller. 552 * 553 * Map the hw fib pointer as a 32bit value 554 */ 555 hw_fib->header.Command = cpu_to_le16(command); 556 hw_fib->header.XferState |= cpu_to_le32(SentFromHost); 557 /* 558 * Set the size of the Fib we want to send to the adapter 559 */ 560 hw_fib->header.Size = cpu_to_le16(sizeof(struct aac_fibhdr) + size); 561 if (le16_to_cpu(hw_fib->header.Size) > le16_to_cpu(hw_fib->header.SenderSize)) { 562 return -EMSGSIZE; 563 } 564 /* 565 * Get a queue entry connect the FIB to it and send an notify 566 * the adapter a command is ready. 567 */ 568 hw_fib->header.XferState |= cpu_to_le32(NormalPriority); 569 570 /* 571 * Fill in the Callback and CallbackContext if we are not 572 * going to wait. 573 */ 574 if (!wait) { 575 fibptr->callback = callback; 576 fibptr->callback_data = callback_data; 577 fibptr->flags = FIB_CONTEXT_FLAG; 578 } 579 580 fibptr->done = 0; 581 582 FIB_COUNTER_INCREMENT(aac_config.FibsSent); 583 584 dprintk((KERN_DEBUG "Fib contents:.\n")); 585 dprintk((KERN_DEBUG " Command = %d.\n", le32_to_cpu(hw_fib->header.Command))); 586 dprintk((KERN_DEBUG " SubCommand = %d.\n", le32_to_cpu(((struct aac_query_mount *)fib_data(fibptr))->command))); 587 dprintk((KERN_DEBUG " XferState = %x.\n", le32_to_cpu(hw_fib->header.XferState))); 588 dprintk((KERN_DEBUG " hw_fib va being sent=%p\n",fibptr->hw_fib_va)); 589 dprintk((KERN_DEBUG " hw_fib pa being sent=%lx\n",(ulong)fibptr->hw_fib_pa)); 590 dprintk((KERN_DEBUG " fib being sent=%p\n",fibptr)); 591 592 if (!dev->queues) 593 return -EBUSY; 594 595 if (wait) { 596 597 spin_lock_irqsave(&dev->manage_lock, mflags); 598 if (dev->management_fib_count >= AAC_NUM_MGT_FIB) { 599 printk(KERN_INFO "No management Fibs Available:%d\n", 600 dev->management_fib_count); 601 spin_unlock_irqrestore(&dev->manage_lock, mflags); 602 return -EBUSY; 603 } 604 dev->management_fib_count++; 605 spin_unlock_irqrestore(&dev->manage_lock, mflags); 606 spin_lock_irqsave(&fibptr->event_lock, flags); 607 } 608 609 if (dev->sync_mode) { 610 if (wait) 611 spin_unlock_irqrestore(&fibptr->event_lock, flags); 612 spin_lock_irqsave(&dev->sync_lock, sflags); 613 if (dev->sync_fib) { 614 list_add_tail(&fibptr->fiblink, &dev->sync_fib_list); 615 spin_unlock_irqrestore(&dev->sync_lock, sflags); 616 } else { 617 dev->sync_fib = fibptr; 618 spin_unlock_irqrestore(&dev->sync_lock, sflags); 619 aac_adapter_sync_cmd(dev, SEND_SYNCHRONOUS_FIB, 620 (u32)fibptr->hw_fib_pa, 0, 0, 0, 0, 0, 621 NULL, NULL, NULL, NULL, NULL); 622 } 623 if (wait) { 624 fibptr->flags |= FIB_CONTEXT_FLAG_WAIT; 625 if (down_interruptible(&fibptr->event_wait)) { 626 fibptr->flags &= ~FIB_CONTEXT_FLAG_WAIT; 627 return -EFAULT; 628 } 629 return 0; 630 } 631 return -EINPROGRESS; 632 } 633 634 if (aac_adapter_deliver(fibptr) != 0) { 635 printk(KERN_ERR "aac_fib_send: returned -EBUSY\n"); 636 if (wait) { 637 spin_unlock_irqrestore(&fibptr->event_lock, flags); 638 spin_lock_irqsave(&dev->manage_lock, mflags); 639 dev->management_fib_count--; 640 spin_unlock_irqrestore(&dev->manage_lock, mflags); 641 } 642 return -EBUSY; 643 } 644 645 646 /* 647 * If the caller wanted us to wait for response wait now. 648 */ 649 650 if (wait) { 651 spin_unlock_irqrestore(&fibptr->event_lock, flags); 652 /* Only set for first known interruptable command */ 653 if (wait < 0) { 654 /* 655 * *VERY* Dangerous to time out a command, the 656 * assumption is made that we have no hope of 657 * functioning because an interrupt routing or other 658 * hardware failure has occurred. 659 */ 660 unsigned long timeout = jiffies + (180 * HZ); /* 3 minutes */ 661 while (down_trylock(&fibptr->event_wait)) { 662 int blink; 663 if (time_is_before_eq_jiffies(timeout)) { 664 struct aac_queue * q = &dev->queues->queue[AdapNormCmdQueue]; 665 atomic_dec(&q->numpending); 666 if (wait == -1) { 667 printk(KERN_ERR "aacraid: aac_fib_send: first asynchronous command timed out.\n" 668 "Usually a result of a PCI interrupt routing problem;\n" 669 "update mother board BIOS or consider utilizing one of\n" 670 "the SAFE mode kernel options (acpi, apic etc)\n"); 671 } 672 return -ETIMEDOUT; 673 } 674 675 if (unlikely(pci_channel_offline(dev->pdev))) 676 return -EFAULT; 677 678 if ((blink = aac_adapter_check_health(dev)) > 0) { 679 if (wait == -1) { 680 printk(KERN_ERR "aacraid: aac_fib_send: adapter blinkLED 0x%x.\n" 681 "Usually a result of a serious unrecoverable hardware problem\n", 682 blink); 683 } 684 return -EFAULT; 685 } 686 /* 687 * Allow other processes / CPUS to use core 688 */ 689 schedule(); 690 } 691 } else if (down_interruptible(&fibptr->event_wait)) { 692 /* Do nothing ... satisfy 693 * down_interruptible must_check */ 694 } 695 696 spin_lock_irqsave(&fibptr->event_lock, flags); 697 if (fibptr->done == 0) { 698 fibptr->done = 2; /* Tell interrupt we aborted */ 699 spin_unlock_irqrestore(&fibptr->event_lock, flags); 700 return -ERESTARTSYS; 701 } 702 spin_unlock_irqrestore(&fibptr->event_lock, flags); 703 BUG_ON(fibptr->done == 0); 704 705 if(unlikely(fibptr->flags & FIB_CONTEXT_FLAG_TIMED_OUT)) 706 return -ETIMEDOUT; 707 return 0; 708 } 709 /* 710 * If the user does not want a response than return success otherwise 711 * return pending 712 */ 713 if (reply) 714 return -EINPROGRESS; 715 else 716 return 0; 717 } 718 719 int aac_hba_send(u8 command, struct fib *fibptr, fib_callback callback, 720 void *callback_data) 721 { 722 struct aac_dev *dev = fibptr->dev; 723 int wait; 724 unsigned long flags = 0; 725 unsigned long mflags = 0; 726 727 fibptr->flags = (FIB_CONTEXT_FLAG | FIB_CONTEXT_FLAG_NATIVE_HBA); 728 if (callback) { 729 wait = 0; 730 fibptr->callback = callback; 731 fibptr->callback_data = callback_data; 732 } else 733 wait = 1; 734 735 736 if (command == HBA_IU_TYPE_SCSI_CMD_REQ) { 737 struct aac_hba_cmd_req *hbacmd = 738 (struct aac_hba_cmd_req *)fibptr->hw_fib_va; 739 740 hbacmd->iu_type = command; 741 /* bit1 of request_id must be 0 */ 742 hbacmd->request_id = 743 cpu_to_le32((((u32)(fibptr - dev->fibs)) << 2) + 1); 744 fibptr->flags |= FIB_CONTEXT_FLAG_SCSI_CMD; 745 } else if (command != HBA_IU_TYPE_SCSI_TM_REQ) 746 return -EINVAL; 747 748 749 if (wait) { 750 spin_lock_irqsave(&dev->manage_lock, mflags); 751 if (dev->management_fib_count >= AAC_NUM_MGT_FIB) { 752 spin_unlock_irqrestore(&dev->manage_lock, mflags); 753 return -EBUSY; 754 } 755 dev->management_fib_count++; 756 spin_unlock_irqrestore(&dev->manage_lock, mflags); 757 spin_lock_irqsave(&fibptr->event_lock, flags); 758 } 759 760 if (aac_adapter_deliver(fibptr) != 0) { 761 if (wait) { 762 spin_unlock_irqrestore(&fibptr->event_lock, flags); 763 spin_lock_irqsave(&dev->manage_lock, mflags); 764 dev->management_fib_count--; 765 spin_unlock_irqrestore(&dev->manage_lock, mflags); 766 } 767 return -EBUSY; 768 } 769 FIB_COUNTER_INCREMENT(aac_config.NativeSent); 770 771 if (wait) { 772 773 spin_unlock_irqrestore(&fibptr->event_lock, flags); 774 775 if (unlikely(pci_channel_offline(dev->pdev))) 776 return -EFAULT; 777 778 fibptr->flags |= FIB_CONTEXT_FLAG_WAIT; 779 if (down_interruptible(&fibptr->event_wait)) 780 fibptr->done = 2; 781 fibptr->flags &= ~(FIB_CONTEXT_FLAG_WAIT); 782 783 spin_lock_irqsave(&fibptr->event_lock, flags); 784 if ((fibptr->done == 0) || (fibptr->done == 2)) { 785 fibptr->done = 2; /* Tell interrupt we aborted */ 786 spin_unlock_irqrestore(&fibptr->event_lock, flags); 787 return -ERESTARTSYS; 788 } 789 spin_unlock_irqrestore(&fibptr->event_lock, flags); 790 WARN_ON(fibptr->done == 0); 791 792 if (unlikely(fibptr->flags & FIB_CONTEXT_FLAG_TIMED_OUT)) 793 return -ETIMEDOUT; 794 795 return 0; 796 } 797 798 return -EINPROGRESS; 799 } 800 801 /** 802 * aac_consumer_get - get the top of the queue 803 * @dev: Adapter 804 * @q: Queue 805 * @entry: Return entry 806 * 807 * Will return a pointer to the entry on the top of the queue requested that 808 * we are a consumer of, and return the address of the queue entry. It does 809 * not change the state of the queue. 810 */ 811 812 int aac_consumer_get(struct aac_dev * dev, struct aac_queue * q, struct aac_entry **entry) 813 { 814 u32 index; 815 int status; 816 if (le32_to_cpu(*q->headers.producer) == le32_to_cpu(*q->headers.consumer)) { 817 status = 0; 818 } else { 819 /* 820 * The consumer index must be wrapped if we have reached 821 * the end of the queue, else we just use the entry 822 * pointed to by the header index 823 */ 824 if (le32_to_cpu(*q->headers.consumer) >= q->entries) 825 index = 0; 826 else 827 index = le32_to_cpu(*q->headers.consumer); 828 *entry = q->base + index; 829 status = 1; 830 } 831 return(status); 832 } 833 834 /** 835 * aac_consumer_free - free consumer entry 836 * @dev: Adapter 837 * @q: Queue 838 * @qid: Queue ident 839 * 840 * Frees up the current top of the queue we are a consumer of. If the 841 * queue was full notify the producer that the queue is no longer full. 842 */ 843 844 void aac_consumer_free(struct aac_dev * dev, struct aac_queue *q, u32 qid) 845 { 846 int wasfull = 0; 847 u32 notify; 848 849 if ((le32_to_cpu(*q->headers.producer)+1) == le32_to_cpu(*q->headers.consumer)) 850 wasfull = 1; 851 852 if (le32_to_cpu(*q->headers.consumer) >= q->entries) 853 *q->headers.consumer = cpu_to_le32(1); 854 else 855 le32_add_cpu(q->headers.consumer, 1); 856 857 if (wasfull) { 858 switch (qid) { 859 860 case HostNormCmdQueue: 861 notify = HostNormCmdNotFull; 862 break; 863 case HostNormRespQueue: 864 notify = HostNormRespNotFull; 865 break; 866 default: 867 BUG(); 868 return; 869 } 870 aac_adapter_notify(dev, notify); 871 } 872 } 873 874 /** 875 * aac_fib_adapter_complete - complete adapter issued fib 876 * @fibptr: fib to complete 877 * @size: size of fib 878 * 879 * Will do all necessary work to complete a FIB that was sent from 880 * the adapter. 881 */ 882 883 int aac_fib_adapter_complete(struct fib *fibptr, unsigned short size) 884 { 885 struct hw_fib * hw_fib = fibptr->hw_fib_va; 886 struct aac_dev * dev = fibptr->dev; 887 struct aac_queue * q; 888 unsigned long nointr = 0; 889 unsigned long qflags; 890 891 if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE1 || 892 dev->comm_interface == AAC_COMM_MESSAGE_TYPE2 || 893 dev->comm_interface == AAC_COMM_MESSAGE_TYPE3) { 894 kfree(hw_fib); 895 return 0; 896 } 897 898 if (hw_fib->header.XferState == 0) { 899 if (dev->comm_interface == AAC_COMM_MESSAGE) 900 kfree(hw_fib); 901 return 0; 902 } 903 /* 904 * If we plan to do anything check the structure type first. 905 */ 906 if (hw_fib->header.StructType != FIB_MAGIC && 907 hw_fib->header.StructType != FIB_MAGIC2 && 908 hw_fib->header.StructType != FIB_MAGIC2_64) { 909 if (dev->comm_interface == AAC_COMM_MESSAGE) 910 kfree(hw_fib); 911 return -EINVAL; 912 } 913 /* 914 * This block handles the case where the adapter had sent us a 915 * command and we have finished processing the command. We 916 * call completeFib when we are done processing the command 917 * and want to send a response back to the adapter. This will 918 * send the completed cdb to the adapter. 919 */ 920 if (hw_fib->header.XferState & cpu_to_le32(SentFromAdapter)) { 921 if (dev->comm_interface == AAC_COMM_MESSAGE) { 922 kfree (hw_fib); 923 } else { 924 u32 index; 925 hw_fib->header.XferState |= cpu_to_le32(HostProcessed); 926 if (size) { 927 size += sizeof(struct aac_fibhdr); 928 if (size > le16_to_cpu(hw_fib->header.SenderSize)) 929 return -EMSGSIZE; 930 hw_fib->header.Size = cpu_to_le16(size); 931 } 932 q = &dev->queues->queue[AdapNormRespQueue]; 933 spin_lock_irqsave(q->lock, qflags); 934 aac_queue_get(dev, &index, AdapNormRespQueue, hw_fib, 1, NULL, &nointr); 935 *(q->headers.producer) = cpu_to_le32(index + 1); 936 spin_unlock_irqrestore(q->lock, qflags); 937 if (!(nointr & (int)aac_config.irq_mod)) 938 aac_adapter_notify(dev, AdapNormRespQueue); 939 } 940 } else { 941 printk(KERN_WARNING "aac_fib_adapter_complete: " 942 "Unknown xferstate detected.\n"); 943 BUG(); 944 } 945 return 0; 946 } 947 948 /** 949 * aac_fib_complete - fib completion handler 950 * @fib: FIB to complete 951 * 952 * Will do all necessary work to complete a FIB. 953 */ 954 955 int aac_fib_complete(struct fib *fibptr) 956 { 957 struct hw_fib * hw_fib = fibptr->hw_fib_va; 958 959 if (fibptr->flags & FIB_CONTEXT_FLAG_NATIVE_HBA) { 960 fib_dealloc(fibptr); 961 return 0; 962 } 963 964 /* 965 * Check for a fib which has already been completed or with a 966 * status wait timeout 967 */ 968 969 if (hw_fib->header.XferState == 0 || fibptr->done == 2) 970 return 0; 971 /* 972 * If we plan to do anything check the structure type first. 973 */ 974 975 if (hw_fib->header.StructType != FIB_MAGIC && 976 hw_fib->header.StructType != FIB_MAGIC2 && 977 hw_fib->header.StructType != FIB_MAGIC2_64) 978 return -EINVAL; 979 /* 980 * This block completes a cdb which orginated on the host and we 981 * just need to deallocate the cdb or reinit it. At this point the 982 * command is complete that we had sent to the adapter and this 983 * cdb could be reused. 984 */ 985 986 if((hw_fib->header.XferState & cpu_to_le32(SentFromHost)) && 987 (hw_fib->header.XferState & cpu_to_le32(AdapterProcessed))) 988 { 989 fib_dealloc(fibptr); 990 } 991 else if(hw_fib->header.XferState & cpu_to_le32(SentFromHost)) 992 { 993 /* 994 * This handles the case when the host has aborted the I/O 995 * to the adapter because the adapter is not responding 996 */ 997 fib_dealloc(fibptr); 998 } else if(hw_fib->header.XferState & cpu_to_le32(HostOwned)) { 999 fib_dealloc(fibptr); 1000 } else { 1001 BUG(); 1002 } 1003 return 0; 1004 } 1005 1006 /** 1007 * aac_printf - handle printf from firmware 1008 * @dev: Adapter 1009 * @val: Message info 1010 * 1011 * Print a message passed to us by the controller firmware on the 1012 * Adaptec board 1013 */ 1014 1015 void aac_printf(struct aac_dev *dev, u32 val) 1016 { 1017 char *cp = dev->printfbuf; 1018 if (dev->printf_enabled) 1019 { 1020 int length = val & 0xffff; 1021 int level = (val >> 16) & 0xffff; 1022 1023 /* 1024 * The size of the printfbuf is set in port.c 1025 * There is no variable or define for it 1026 */ 1027 if (length > 255) 1028 length = 255; 1029 if (cp[length] != 0) 1030 cp[length] = 0; 1031 if (level == LOG_AAC_HIGH_ERROR) 1032 printk(KERN_WARNING "%s:%s", dev->name, cp); 1033 else 1034 printk(KERN_INFO "%s:%s", dev->name, cp); 1035 } 1036 memset(cp, 0, 256); 1037 } 1038 1039 static inline int aac_aif_data(struct aac_aifcmd *aifcmd, uint32_t index) 1040 { 1041 return le32_to_cpu(((__le32 *)aifcmd->data)[index]); 1042 } 1043 1044 1045 static void aac_handle_aif_bu(struct aac_dev *dev, struct aac_aifcmd *aifcmd) 1046 { 1047 switch (aac_aif_data(aifcmd, 1)) { 1048 case AifBuCacheDataLoss: 1049 if (aac_aif_data(aifcmd, 2)) 1050 dev_info(&dev->pdev->dev, "Backup unit had cache data loss - [%d]\n", 1051 aac_aif_data(aifcmd, 2)); 1052 else 1053 dev_info(&dev->pdev->dev, "Backup Unit had cache data loss\n"); 1054 break; 1055 case AifBuCacheDataRecover: 1056 if (aac_aif_data(aifcmd, 2)) 1057 dev_info(&dev->pdev->dev, "DDR cache data recovered successfully - [%d]\n", 1058 aac_aif_data(aifcmd, 2)); 1059 else 1060 dev_info(&dev->pdev->dev, "DDR cache data recovered successfully\n"); 1061 break; 1062 } 1063 } 1064 1065 /** 1066 * aac_handle_aif - Handle a message from the firmware 1067 * @dev: Which adapter this fib is from 1068 * @fibptr: Pointer to fibptr from adapter 1069 * 1070 * This routine handles a driver notify fib from the adapter and 1071 * dispatches it to the appropriate routine for handling. 1072 */ 1073 1074 #define AIF_SNIFF_TIMEOUT (500*HZ) 1075 static void aac_handle_aif(struct aac_dev * dev, struct fib * fibptr) 1076 { 1077 struct hw_fib * hw_fib = fibptr->hw_fib_va; 1078 struct aac_aifcmd * aifcmd = (struct aac_aifcmd *)hw_fib->data; 1079 u32 channel, id, lun, container; 1080 struct scsi_device *device; 1081 enum { 1082 NOTHING, 1083 DELETE, 1084 ADD, 1085 CHANGE 1086 } device_config_needed = NOTHING; 1087 1088 /* Sniff for container changes */ 1089 1090 if (!dev || !dev->fsa_dev) 1091 return; 1092 container = channel = id = lun = (u32)-1; 1093 1094 /* 1095 * We have set this up to try and minimize the number of 1096 * re-configures that take place. As a result of this when 1097 * certain AIF's come in we will set a flag waiting for another 1098 * type of AIF before setting the re-config flag. 1099 */ 1100 switch (le32_to_cpu(aifcmd->command)) { 1101 case AifCmdDriverNotify: 1102 switch (le32_to_cpu(((__le32 *)aifcmd->data)[0])) { 1103 case AifRawDeviceRemove: 1104 container = le32_to_cpu(((__le32 *)aifcmd->data)[1]); 1105 if ((container >> 28)) { 1106 container = (u32)-1; 1107 break; 1108 } 1109 channel = (container >> 24) & 0xF; 1110 if (channel >= dev->maximum_num_channels) { 1111 container = (u32)-1; 1112 break; 1113 } 1114 id = container & 0xFFFF; 1115 if (id >= dev->maximum_num_physicals) { 1116 container = (u32)-1; 1117 break; 1118 } 1119 lun = (container >> 16) & 0xFF; 1120 container = (u32)-1; 1121 channel = aac_phys_to_logical(channel); 1122 device_config_needed = DELETE; 1123 break; 1124 1125 /* 1126 * Morph or Expand complete 1127 */ 1128 case AifDenMorphComplete: 1129 case AifDenVolumeExtendComplete: 1130 container = le32_to_cpu(((__le32 *)aifcmd->data)[1]); 1131 if (container >= dev->maximum_num_containers) 1132 break; 1133 1134 /* 1135 * Find the scsi_device associated with the SCSI 1136 * address. Make sure we have the right array, and if 1137 * so set the flag to initiate a new re-config once we 1138 * see an AifEnConfigChange AIF come through. 1139 */ 1140 1141 if ((dev != NULL) && (dev->scsi_host_ptr != NULL)) { 1142 device = scsi_device_lookup(dev->scsi_host_ptr, 1143 CONTAINER_TO_CHANNEL(container), 1144 CONTAINER_TO_ID(container), 1145 CONTAINER_TO_LUN(container)); 1146 if (device) { 1147 dev->fsa_dev[container].config_needed = CHANGE; 1148 dev->fsa_dev[container].config_waiting_on = AifEnConfigChange; 1149 dev->fsa_dev[container].config_waiting_stamp = jiffies; 1150 scsi_device_put(device); 1151 } 1152 } 1153 } 1154 1155 /* 1156 * If we are waiting on something and this happens to be 1157 * that thing then set the re-configure flag. 1158 */ 1159 if (container != (u32)-1) { 1160 if (container >= dev->maximum_num_containers) 1161 break; 1162 if ((dev->fsa_dev[container].config_waiting_on == 1163 le32_to_cpu(*(__le32 *)aifcmd->data)) && 1164 time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT)) 1165 dev->fsa_dev[container].config_waiting_on = 0; 1166 } else for (container = 0; 1167 container < dev->maximum_num_containers; ++container) { 1168 if ((dev->fsa_dev[container].config_waiting_on == 1169 le32_to_cpu(*(__le32 *)aifcmd->data)) && 1170 time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT)) 1171 dev->fsa_dev[container].config_waiting_on = 0; 1172 } 1173 break; 1174 1175 case AifCmdEventNotify: 1176 switch (le32_to_cpu(((__le32 *)aifcmd->data)[0])) { 1177 case AifEnBatteryEvent: 1178 dev->cache_protected = 1179 (((__le32 *)aifcmd->data)[1] == cpu_to_le32(3)); 1180 break; 1181 /* 1182 * Add an Array. 1183 */ 1184 case AifEnAddContainer: 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 = ADD; 1189 dev->fsa_dev[container].config_waiting_on = 1190 AifEnConfigChange; 1191 dev->fsa_dev[container].config_waiting_stamp = jiffies; 1192 break; 1193 1194 /* 1195 * Delete an Array. 1196 */ 1197 case AifEnDeleteContainer: 1198 container = le32_to_cpu(((__le32 *)aifcmd->data)[1]); 1199 if (container >= dev->maximum_num_containers) 1200 break; 1201 dev->fsa_dev[container].config_needed = DELETE; 1202 dev->fsa_dev[container].config_waiting_on = 1203 AifEnConfigChange; 1204 dev->fsa_dev[container].config_waiting_stamp = jiffies; 1205 break; 1206 1207 /* 1208 * Container change detected. If we currently are not 1209 * waiting on something else, setup to wait on a Config Change. 1210 */ 1211 case AifEnContainerChange: 1212 container = le32_to_cpu(((__le32 *)aifcmd->data)[1]); 1213 if (container >= dev->maximum_num_containers) 1214 break; 1215 if (dev->fsa_dev[container].config_waiting_on && 1216 time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT)) 1217 break; 1218 dev->fsa_dev[container].config_needed = CHANGE; 1219 dev->fsa_dev[container].config_waiting_on = 1220 AifEnConfigChange; 1221 dev->fsa_dev[container].config_waiting_stamp = jiffies; 1222 break; 1223 1224 case AifEnConfigChange: 1225 break; 1226 1227 case AifEnAddJBOD: 1228 case AifEnDeleteJBOD: 1229 container = le32_to_cpu(((__le32 *)aifcmd->data)[1]); 1230 if ((container >> 28)) { 1231 container = (u32)-1; 1232 break; 1233 } 1234 channel = (container >> 24) & 0xF; 1235 if (channel >= dev->maximum_num_channels) { 1236 container = (u32)-1; 1237 break; 1238 } 1239 id = container & 0xFFFF; 1240 if (id >= dev->maximum_num_physicals) { 1241 container = (u32)-1; 1242 break; 1243 } 1244 lun = (container >> 16) & 0xFF; 1245 container = (u32)-1; 1246 channel = aac_phys_to_logical(channel); 1247 device_config_needed = 1248 (((__le32 *)aifcmd->data)[0] == 1249 cpu_to_le32(AifEnAddJBOD)) ? ADD : DELETE; 1250 if (device_config_needed == ADD) { 1251 device = scsi_device_lookup(dev->scsi_host_ptr, 1252 channel, 1253 id, 1254 lun); 1255 if (device) { 1256 scsi_remove_device(device); 1257 scsi_device_put(device); 1258 } 1259 } 1260 break; 1261 1262 case AifEnEnclosureManagement: 1263 /* 1264 * If in JBOD mode, automatic exposure of new 1265 * physical target to be suppressed until configured. 1266 */ 1267 if (dev->jbod) 1268 break; 1269 switch (le32_to_cpu(((__le32 *)aifcmd->data)[3])) { 1270 case EM_DRIVE_INSERTION: 1271 case EM_DRIVE_REMOVAL: 1272 case EM_SES_DRIVE_INSERTION: 1273 case EM_SES_DRIVE_REMOVAL: 1274 container = le32_to_cpu( 1275 ((__le32 *)aifcmd->data)[2]); 1276 if ((container >> 28)) { 1277 container = (u32)-1; 1278 break; 1279 } 1280 channel = (container >> 24) & 0xF; 1281 if (channel >= dev->maximum_num_channels) { 1282 container = (u32)-1; 1283 break; 1284 } 1285 id = container & 0xFFFF; 1286 lun = (container >> 16) & 0xFF; 1287 container = (u32)-1; 1288 if (id >= dev->maximum_num_physicals) { 1289 /* legacy dev_t ? */ 1290 if ((0x2000 <= id) || lun || channel || 1291 ((channel = (id >> 7) & 0x3F) >= 1292 dev->maximum_num_channels)) 1293 break; 1294 lun = (id >> 4) & 7; 1295 id &= 0xF; 1296 } 1297 channel = aac_phys_to_logical(channel); 1298 device_config_needed = 1299 ((((__le32 *)aifcmd->data)[3] 1300 == cpu_to_le32(EM_DRIVE_INSERTION)) || 1301 (((__le32 *)aifcmd->data)[3] 1302 == cpu_to_le32(EM_SES_DRIVE_INSERTION))) ? 1303 ADD : DELETE; 1304 break; 1305 } 1306 case AifBuManagerEvent: 1307 aac_handle_aif_bu(dev, aifcmd); 1308 break; 1309 } 1310 1311 /* 1312 * If we are waiting on something and this happens to be 1313 * that thing then set the re-configure flag. 1314 */ 1315 if (container != (u32)-1) { 1316 if (container >= dev->maximum_num_containers) 1317 break; 1318 if ((dev->fsa_dev[container].config_waiting_on == 1319 le32_to_cpu(*(__le32 *)aifcmd->data)) && 1320 time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT)) 1321 dev->fsa_dev[container].config_waiting_on = 0; 1322 } else for (container = 0; 1323 container < dev->maximum_num_containers; ++container) { 1324 if ((dev->fsa_dev[container].config_waiting_on == 1325 le32_to_cpu(*(__le32 *)aifcmd->data)) && 1326 time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT)) 1327 dev->fsa_dev[container].config_waiting_on = 0; 1328 } 1329 break; 1330 1331 case AifCmdJobProgress: 1332 /* 1333 * These are job progress AIF's. When a Clear is being 1334 * done on a container it is initially created then hidden from 1335 * the OS. When the clear completes we don't get a config 1336 * change so we monitor the job status complete on a clear then 1337 * wait for a container change. 1338 */ 1339 1340 if (((__le32 *)aifcmd->data)[1] == cpu_to_le32(AifJobCtrZero) && 1341 (((__le32 *)aifcmd->data)[6] == ((__le32 *)aifcmd->data)[5] || 1342 ((__le32 *)aifcmd->data)[4] == cpu_to_le32(AifJobStsSuccess))) { 1343 for (container = 0; 1344 container < dev->maximum_num_containers; 1345 ++container) { 1346 /* 1347 * Stomp on all config sequencing for all 1348 * containers? 1349 */ 1350 dev->fsa_dev[container].config_waiting_on = 1351 AifEnContainerChange; 1352 dev->fsa_dev[container].config_needed = ADD; 1353 dev->fsa_dev[container].config_waiting_stamp = 1354 jiffies; 1355 } 1356 } 1357 if (((__le32 *)aifcmd->data)[1] == cpu_to_le32(AifJobCtrZero) && 1358 ((__le32 *)aifcmd->data)[6] == 0 && 1359 ((__le32 *)aifcmd->data)[4] == cpu_to_le32(AifJobStsRunning)) { 1360 for (container = 0; 1361 container < dev->maximum_num_containers; 1362 ++container) { 1363 /* 1364 * Stomp on all config sequencing for all 1365 * containers? 1366 */ 1367 dev->fsa_dev[container].config_waiting_on = 1368 AifEnContainerChange; 1369 dev->fsa_dev[container].config_needed = DELETE; 1370 dev->fsa_dev[container].config_waiting_stamp = 1371 jiffies; 1372 } 1373 } 1374 break; 1375 } 1376 1377 container = 0; 1378 retry_next: 1379 if (device_config_needed == NOTHING) 1380 for (; container < dev->maximum_num_containers; ++container) { 1381 if ((dev->fsa_dev[container].config_waiting_on == 0) && 1382 (dev->fsa_dev[container].config_needed != NOTHING) && 1383 time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT)) { 1384 device_config_needed = 1385 dev->fsa_dev[container].config_needed; 1386 dev->fsa_dev[container].config_needed = NOTHING; 1387 channel = CONTAINER_TO_CHANNEL(container); 1388 id = CONTAINER_TO_ID(container); 1389 lun = CONTAINER_TO_LUN(container); 1390 break; 1391 } 1392 } 1393 if (device_config_needed == NOTHING) 1394 return; 1395 1396 /* 1397 * If we decided that a re-configuration needs to be done, 1398 * schedule it here on the way out the door, please close the door 1399 * behind you. 1400 */ 1401 1402 /* 1403 * Find the scsi_device associated with the SCSI address, 1404 * and mark it as changed, invalidating the cache. This deals 1405 * with changes to existing device IDs. 1406 */ 1407 1408 if (!dev || !dev->scsi_host_ptr) 1409 return; 1410 /* 1411 * force reload of disk info via aac_probe_container 1412 */ 1413 if ((channel == CONTAINER_CHANNEL) && 1414 (device_config_needed != NOTHING)) { 1415 if (dev->fsa_dev[container].valid == 1) 1416 dev->fsa_dev[container].valid = 2; 1417 aac_probe_container(dev, container); 1418 } 1419 device = scsi_device_lookup(dev->scsi_host_ptr, channel, id, lun); 1420 if (device) { 1421 switch (device_config_needed) { 1422 case DELETE: 1423 #if (defined(AAC_DEBUG_INSTRUMENT_AIF_DELETE)) 1424 scsi_remove_device(device); 1425 #else 1426 if (scsi_device_online(device)) { 1427 scsi_device_set_state(device, SDEV_OFFLINE); 1428 sdev_printk(KERN_INFO, device, 1429 "Device offlined - %s\n", 1430 (channel == CONTAINER_CHANNEL) ? 1431 "array deleted" : 1432 "enclosure services event"); 1433 } 1434 #endif 1435 break; 1436 case ADD: 1437 if (!scsi_device_online(device)) { 1438 sdev_printk(KERN_INFO, device, 1439 "Device online - %s\n", 1440 (channel == CONTAINER_CHANNEL) ? 1441 "array created" : 1442 "enclosure services event"); 1443 scsi_device_set_state(device, SDEV_RUNNING); 1444 } 1445 /* FALLTHRU */ 1446 case CHANGE: 1447 if ((channel == CONTAINER_CHANNEL) 1448 && (!dev->fsa_dev[container].valid)) { 1449 #if (defined(AAC_DEBUG_INSTRUMENT_AIF_DELETE)) 1450 scsi_remove_device(device); 1451 #else 1452 if (!scsi_device_online(device)) 1453 break; 1454 scsi_device_set_state(device, SDEV_OFFLINE); 1455 sdev_printk(KERN_INFO, device, 1456 "Device offlined - %s\n", 1457 "array failed"); 1458 #endif 1459 break; 1460 } 1461 scsi_rescan_device(&device->sdev_gendev); 1462 1463 default: 1464 break; 1465 } 1466 scsi_device_put(device); 1467 device_config_needed = NOTHING; 1468 } 1469 if (device_config_needed == ADD) 1470 scsi_add_device(dev->scsi_host_ptr, channel, id, lun); 1471 if (channel == CONTAINER_CHANNEL) { 1472 container++; 1473 device_config_needed = NOTHING; 1474 goto retry_next; 1475 } 1476 } 1477 1478 static int _aac_reset_adapter(struct aac_dev *aac, int forced, u8 reset_type) 1479 { 1480 int index, quirks; 1481 int retval; 1482 struct Scsi_Host *host; 1483 struct scsi_device *dev; 1484 struct scsi_cmnd *command; 1485 struct scsi_cmnd *command_list; 1486 int jafo = 0; 1487 int bled; 1488 u64 dmamask; 1489 int num_of_fibs = 0; 1490 1491 /* 1492 * Assumptions: 1493 * - host is locked, unless called by the aacraid thread. 1494 * (a matter of convenience, due to legacy issues surrounding 1495 * eh_host_adapter_reset). 1496 * - in_reset is asserted, so no new i/o is getting to the 1497 * card. 1498 * - The card is dead, or will be very shortly ;-/ so no new 1499 * commands are completing in the interrupt service. 1500 */ 1501 host = aac->scsi_host_ptr; 1502 scsi_block_requests(host); 1503 aac_adapter_disable_int(aac); 1504 if (aac->thread->pid != current->pid) { 1505 spin_unlock_irq(host->host_lock); 1506 kthread_stop(aac->thread); 1507 jafo = 1; 1508 } 1509 1510 /* 1511 * If a positive health, means in a known DEAD PANIC 1512 * state and the adapter could be reset to `try again'. 1513 */ 1514 bled = forced ? 0 : aac_adapter_check_health(aac); 1515 retval = aac_adapter_restart(aac, bled, reset_type); 1516 1517 if (retval) 1518 goto out; 1519 1520 /* 1521 * Loop through the fibs, close the synchronous FIBS 1522 */ 1523 retval = 1; 1524 num_of_fibs = aac->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB; 1525 for (index = 0; index < num_of_fibs; index++) { 1526 1527 struct fib *fib = &aac->fibs[index]; 1528 __le32 XferState = fib->hw_fib_va->header.XferState; 1529 bool is_response_expected = false; 1530 1531 if (!(XferState & cpu_to_le32(NoResponseExpected | Async)) && 1532 (XferState & cpu_to_le32(ResponseExpected))) 1533 is_response_expected = true; 1534 1535 if (is_response_expected 1536 || fib->flags & FIB_CONTEXT_FLAG_WAIT) { 1537 unsigned long flagv; 1538 spin_lock_irqsave(&fib->event_lock, flagv); 1539 up(&fib->event_wait); 1540 spin_unlock_irqrestore(&fib->event_lock, flagv); 1541 schedule(); 1542 retval = 0; 1543 } 1544 } 1545 /* Give some extra time for ioctls to complete. */ 1546 if (retval == 0) 1547 ssleep(2); 1548 index = aac->cardtype; 1549 1550 /* 1551 * Re-initialize the adapter, first free resources, then carefully 1552 * apply the initialization sequence to come back again. Only risk 1553 * is a change in Firmware dropping cache, it is assumed the caller 1554 * will ensure that i/o is queisced and the card is flushed in that 1555 * case. 1556 */ 1557 aac_free_irq(aac); 1558 aac_fib_map_free(aac); 1559 dma_free_coherent(&aac->pdev->dev, aac->comm_size, aac->comm_addr, 1560 aac->comm_phys); 1561 aac->comm_addr = NULL; 1562 aac->comm_phys = 0; 1563 kfree(aac->queues); 1564 aac->queues = NULL; 1565 kfree(aac->fsa_dev); 1566 aac->fsa_dev = NULL; 1567 1568 dmamask = DMA_BIT_MASK(32); 1569 quirks = aac_get_driver_ident(index)->quirks; 1570 if (quirks & AAC_QUIRK_31BIT) 1571 retval = pci_set_dma_mask(aac->pdev, dmamask); 1572 else if (!(quirks & AAC_QUIRK_SRC)) 1573 retval = pci_set_dma_mask(aac->pdev, dmamask); 1574 else 1575 retval = pci_set_consistent_dma_mask(aac->pdev, dmamask); 1576 1577 if (quirks & AAC_QUIRK_31BIT && !retval) { 1578 dmamask = DMA_BIT_MASK(31); 1579 retval = pci_set_consistent_dma_mask(aac->pdev, dmamask); 1580 } 1581 1582 if (retval) 1583 goto out; 1584 1585 if ((retval = (*(aac_get_driver_ident(index)->init))(aac))) 1586 goto out; 1587 1588 if (jafo) { 1589 aac->thread = kthread_run(aac_command_thread, aac, "%s", 1590 aac->name); 1591 if (IS_ERR(aac->thread)) { 1592 retval = PTR_ERR(aac->thread); 1593 goto out; 1594 } 1595 } 1596 (void)aac_get_adapter_info(aac); 1597 if ((quirks & AAC_QUIRK_34SG) && (host->sg_tablesize > 34)) { 1598 host->sg_tablesize = 34; 1599 host->max_sectors = (host->sg_tablesize * 8) + 112; 1600 } 1601 if ((quirks & AAC_QUIRK_17SG) && (host->sg_tablesize > 17)) { 1602 host->sg_tablesize = 17; 1603 host->max_sectors = (host->sg_tablesize * 8) + 112; 1604 } 1605 aac_get_config_status(aac, 1); 1606 aac_get_containers(aac); 1607 /* 1608 * This is where the assumption that the Adapter is quiesced 1609 * is important. 1610 */ 1611 command_list = NULL; 1612 __shost_for_each_device(dev, host) { 1613 unsigned long flags; 1614 spin_lock_irqsave(&dev->list_lock, flags); 1615 list_for_each_entry(command, &dev->cmd_list, list) 1616 if (command->SCp.phase == AAC_OWNER_FIRMWARE) { 1617 command->SCp.buffer = (struct scatterlist *)command_list; 1618 command_list = command; 1619 } 1620 spin_unlock_irqrestore(&dev->list_lock, flags); 1621 } 1622 while ((command = command_list)) { 1623 command_list = (struct scsi_cmnd *)command->SCp.buffer; 1624 command->SCp.buffer = NULL; 1625 command->result = DID_OK << 16 1626 | COMMAND_COMPLETE << 8 1627 | SAM_STAT_TASK_SET_FULL; 1628 command->SCp.phase = AAC_OWNER_ERROR_HANDLER; 1629 command->scsi_done(command); 1630 } 1631 /* 1632 * Any Device that was already marked offline needs to be cleaned up 1633 */ 1634 __shost_for_each_device(dev, host) { 1635 if (!scsi_device_online(dev)) { 1636 sdev_printk(KERN_INFO, dev, "Removing offline device\n"); 1637 scsi_remove_device(dev); 1638 scsi_device_put(dev); 1639 } 1640 } 1641 retval = 0; 1642 1643 out: 1644 aac->in_reset = 0; 1645 scsi_unblock_requests(host); 1646 /* 1647 * Issue bus rescan to catch any configuration that might have 1648 * occurred 1649 */ 1650 if (!retval) { 1651 dev_info(&aac->pdev->dev, "Issuing bus rescan\n"); 1652 scsi_scan_host(host); 1653 } 1654 if (jafo) { 1655 spin_lock_irq(host->host_lock); 1656 } 1657 return retval; 1658 } 1659 1660 int aac_reset_adapter(struct aac_dev *aac, int forced, u8 reset_type) 1661 { 1662 unsigned long flagv = 0; 1663 int retval; 1664 struct Scsi_Host * host; 1665 int bled; 1666 1667 if (spin_trylock_irqsave(&aac->fib_lock, flagv) == 0) 1668 return -EBUSY; 1669 1670 if (aac->in_reset) { 1671 spin_unlock_irqrestore(&aac->fib_lock, flagv); 1672 return -EBUSY; 1673 } 1674 aac->in_reset = 1; 1675 spin_unlock_irqrestore(&aac->fib_lock, flagv); 1676 1677 /* 1678 * Wait for all commands to complete to this specific 1679 * target (block maximum 60 seconds). Although not necessary, 1680 * it does make us a good storage citizen. 1681 */ 1682 host = aac->scsi_host_ptr; 1683 scsi_block_requests(host); 1684 if (forced < 2) for (retval = 60; retval; --retval) { 1685 struct scsi_device * dev; 1686 struct scsi_cmnd * command; 1687 int active = 0; 1688 1689 __shost_for_each_device(dev, host) { 1690 spin_lock_irqsave(&dev->list_lock, flagv); 1691 list_for_each_entry(command, &dev->cmd_list, list) { 1692 if (command->SCp.phase == AAC_OWNER_FIRMWARE) { 1693 active++; 1694 break; 1695 } 1696 } 1697 spin_unlock_irqrestore(&dev->list_lock, flagv); 1698 if (active) 1699 break; 1700 1701 } 1702 /* 1703 * We can exit If all the commands are complete 1704 */ 1705 if (active == 0) 1706 break; 1707 ssleep(1); 1708 } 1709 1710 /* Quiesce build, flush cache, write through mode */ 1711 if (forced < 2) 1712 aac_send_shutdown(aac); 1713 spin_lock_irqsave(host->host_lock, flagv); 1714 bled = forced ? forced : 1715 (aac_check_reset != 0 && aac_check_reset != 1); 1716 retval = _aac_reset_adapter(aac, bled, reset_type); 1717 spin_unlock_irqrestore(host->host_lock, flagv); 1718 1719 if ((forced < 2) && (retval == -ENODEV)) { 1720 /* Unwind aac_send_shutdown() IOP_RESET unsupported/disabled */ 1721 struct fib * fibctx = aac_fib_alloc(aac); 1722 if (fibctx) { 1723 struct aac_pause *cmd; 1724 int status; 1725 1726 aac_fib_init(fibctx); 1727 1728 cmd = (struct aac_pause *) fib_data(fibctx); 1729 1730 cmd->command = cpu_to_le32(VM_ContainerConfig); 1731 cmd->type = cpu_to_le32(CT_PAUSE_IO); 1732 cmd->timeout = cpu_to_le32(1); 1733 cmd->min = cpu_to_le32(1); 1734 cmd->noRescan = cpu_to_le32(1); 1735 cmd->count = cpu_to_le32(0); 1736 1737 status = aac_fib_send(ContainerCommand, 1738 fibctx, 1739 sizeof(struct aac_pause), 1740 FsaNormal, 1741 -2 /* Timeout silently */, 1, 1742 NULL, NULL); 1743 1744 if (status >= 0) 1745 aac_fib_complete(fibctx); 1746 /* FIB should be freed only after getting 1747 * the response from the F/W */ 1748 if (status != -ERESTARTSYS) 1749 aac_fib_free(fibctx); 1750 } 1751 } 1752 1753 return retval; 1754 } 1755 1756 int aac_check_health(struct aac_dev * aac) 1757 { 1758 int BlinkLED; 1759 unsigned long time_now, flagv = 0; 1760 struct list_head * entry; 1761 1762 /* Extending the scope of fib_lock slightly to protect aac->in_reset */ 1763 if (spin_trylock_irqsave(&aac->fib_lock, flagv) == 0) 1764 return 0; 1765 1766 if (aac->in_reset || !(BlinkLED = aac_adapter_check_health(aac))) { 1767 spin_unlock_irqrestore(&aac->fib_lock, flagv); 1768 return 0; /* OK */ 1769 } 1770 1771 aac->in_reset = 1; 1772 1773 /* Fake up an AIF: 1774 * aac_aifcmd.command = AifCmdEventNotify = 1 1775 * aac_aifcmd.seqnum = 0xFFFFFFFF 1776 * aac_aifcmd.data[0] = AifEnExpEvent = 23 1777 * aac_aifcmd.data[1] = AifExeFirmwarePanic = 3 1778 * aac.aifcmd.data[2] = AifHighPriority = 3 1779 * aac.aifcmd.data[3] = BlinkLED 1780 */ 1781 1782 time_now = jiffies/HZ; 1783 entry = aac->fib_list.next; 1784 1785 /* 1786 * For each Context that is on the 1787 * fibctxList, make a copy of the 1788 * fib, and then set the event to wake up the 1789 * thread that is waiting for it. 1790 */ 1791 while (entry != &aac->fib_list) { 1792 /* 1793 * Extract the fibctx 1794 */ 1795 struct aac_fib_context *fibctx = list_entry(entry, struct aac_fib_context, next); 1796 struct hw_fib * hw_fib; 1797 struct fib * fib; 1798 /* 1799 * Check if the queue is getting 1800 * backlogged 1801 */ 1802 if (fibctx->count > 20) { 1803 /* 1804 * It's *not* jiffies folks, 1805 * but jiffies / HZ, so do not 1806 * panic ... 1807 */ 1808 u32 time_last = fibctx->jiffies; 1809 /* 1810 * Has it been > 2 minutes 1811 * since the last read off 1812 * the queue? 1813 */ 1814 if ((time_now - time_last) > aif_timeout) { 1815 entry = entry->next; 1816 aac_close_fib_context(aac, fibctx); 1817 continue; 1818 } 1819 } 1820 /* 1821 * Warning: no sleep allowed while 1822 * holding spinlock 1823 */ 1824 hw_fib = kzalloc(sizeof(struct hw_fib), GFP_ATOMIC); 1825 fib = kzalloc(sizeof(struct fib), GFP_ATOMIC); 1826 if (fib && hw_fib) { 1827 struct aac_aifcmd * aif; 1828 1829 fib->hw_fib_va = hw_fib; 1830 fib->dev = aac; 1831 aac_fib_init(fib); 1832 fib->type = FSAFS_NTC_FIB_CONTEXT; 1833 fib->size = sizeof (struct fib); 1834 fib->data = hw_fib->data; 1835 aif = (struct aac_aifcmd *)hw_fib->data; 1836 aif->command = cpu_to_le32(AifCmdEventNotify); 1837 aif->seqnum = cpu_to_le32(0xFFFFFFFF); 1838 ((__le32 *)aif->data)[0] = cpu_to_le32(AifEnExpEvent); 1839 ((__le32 *)aif->data)[1] = cpu_to_le32(AifExeFirmwarePanic); 1840 ((__le32 *)aif->data)[2] = cpu_to_le32(AifHighPriority); 1841 ((__le32 *)aif->data)[3] = cpu_to_le32(BlinkLED); 1842 1843 /* 1844 * Put the FIB onto the 1845 * fibctx's fibs 1846 */ 1847 list_add_tail(&fib->fiblink, &fibctx->fib_list); 1848 fibctx->count++; 1849 /* 1850 * Set the event to wake up the 1851 * thread that will waiting. 1852 */ 1853 up(&fibctx->wait_sem); 1854 } else { 1855 printk(KERN_WARNING "aifd: didn't allocate NewFib.\n"); 1856 kfree(fib); 1857 kfree(hw_fib); 1858 } 1859 entry = entry->next; 1860 } 1861 1862 spin_unlock_irqrestore(&aac->fib_lock, flagv); 1863 1864 if (BlinkLED < 0) { 1865 printk(KERN_ERR "%s: Host adapter is dead (or got a PCI error) %d\n", 1866 aac->name, BlinkLED); 1867 goto out; 1868 } 1869 1870 printk(KERN_ERR "%s: Host adapter BLINK LED 0x%x\n", aac->name, BlinkLED); 1871 1872 out: 1873 aac->in_reset = 0; 1874 return BlinkLED; 1875 } 1876 1877 1878 static void aac_resolve_luns(struct aac_dev *dev) 1879 { 1880 int bus, target, channel; 1881 struct scsi_device *sdev; 1882 u8 devtype; 1883 u8 new_devtype; 1884 1885 for (bus = 0; bus < AAC_MAX_BUSES; bus++) { 1886 for (target = 0; target < AAC_MAX_TARGETS; target++) { 1887 1888 if (bus == CONTAINER_CHANNEL) 1889 channel = CONTAINER_CHANNEL; 1890 else 1891 channel = aac_phys_to_logical(bus); 1892 1893 devtype = dev->hba_map[bus][target].devtype; 1894 new_devtype = dev->hba_map[bus][target].new_devtype; 1895 1896 sdev = scsi_device_lookup(dev->scsi_host_ptr, channel, 1897 target, 0); 1898 1899 if (!sdev && new_devtype) 1900 scsi_add_device(dev->scsi_host_ptr, channel, 1901 target, 0); 1902 else if (sdev && new_devtype != devtype) 1903 scsi_remove_device(sdev); 1904 else if (sdev && new_devtype == devtype) 1905 scsi_rescan_device(&sdev->sdev_gendev); 1906 1907 if (sdev) 1908 scsi_device_put(sdev); 1909 1910 dev->hba_map[bus][target].devtype = new_devtype; 1911 } 1912 } 1913 } 1914 1915 /** 1916 * aac_handle_sa_aif Handle a message from the firmware 1917 * @dev: Which adapter this fib is from 1918 * @fibptr: Pointer to fibptr from adapter 1919 * 1920 * This routine handles a driver notify fib from the adapter and 1921 * dispatches it to the appropriate routine for handling. 1922 */ 1923 static void aac_handle_sa_aif(struct aac_dev *dev, struct fib *fibptr) 1924 { 1925 int i, bus, target, container, rcode = 0; 1926 u32 events = 0; 1927 struct fib *fib; 1928 struct scsi_device *sdev; 1929 1930 if (fibptr->hbacmd_size & SA_AIF_HOTPLUG) 1931 events = SA_AIF_HOTPLUG; 1932 else if (fibptr->hbacmd_size & SA_AIF_HARDWARE) 1933 events = SA_AIF_HARDWARE; 1934 else if (fibptr->hbacmd_size & SA_AIF_PDEV_CHANGE) 1935 events = SA_AIF_PDEV_CHANGE; 1936 else if (fibptr->hbacmd_size & SA_AIF_LDEV_CHANGE) 1937 events = SA_AIF_LDEV_CHANGE; 1938 else if (fibptr->hbacmd_size & SA_AIF_BPSTAT_CHANGE) 1939 events = SA_AIF_BPSTAT_CHANGE; 1940 else if (fibptr->hbacmd_size & SA_AIF_BPCFG_CHANGE) 1941 events = SA_AIF_BPCFG_CHANGE; 1942 1943 switch (events) { 1944 case SA_AIF_HOTPLUG: 1945 case SA_AIF_HARDWARE: 1946 case SA_AIF_PDEV_CHANGE: 1947 case SA_AIF_LDEV_CHANGE: 1948 case SA_AIF_BPCFG_CHANGE: 1949 1950 fib = aac_fib_alloc(dev); 1951 if (!fib) { 1952 pr_err("aac_handle_sa_aif: out of memory\n"); 1953 return; 1954 } 1955 for (bus = 0; bus < AAC_MAX_BUSES; bus++) 1956 for (target = 0; target < AAC_MAX_TARGETS; target++) 1957 dev->hba_map[bus][target].new_devtype = 0; 1958 1959 rcode = aac_report_phys_luns(dev, fib, AAC_RESCAN); 1960 1961 if (rcode != -ERESTARTSYS) 1962 aac_fib_free(fib); 1963 1964 aac_resolve_luns(dev); 1965 1966 if (events == SA_AIF_LDEV_CHANGE || 1967 events == SA_AIF_BPCFG_CHANGE) { 1968 aac_get_containers(dev); 1969 for (container = 0; container < 1970 dev->maximum_num_containers; ++container) { 1971 sdev = scsi_device_lookup(dev->scsi_host_ptr, 1972 CONTAINER_CHANNEL, 1973 container, 0); 1974 if (dev->fsa_dev[container].valid && !sdev) { 1975 scsi_add_device(dev->scsi_host_ptr, 1976 CONTAINER_CHANNEL, 1977 container, 0); 1978 } else if (!dev->fsa_dev[container].valid && 1979 sdev) { 1980 scsi_remove_device(sdev); 1981 scsi_device_put(sdev); 1982 } else if (sdev) { 1983 scsi_rescan_device(&sdev->sdev_gendev); 1984 scsi_device_put(sdev); 1985 } 1986 } 1987 } 1988 break; 1989 1990 case SA_AIF_BPSTAT_CHANGE: 1991 /* currently do nothing */ 1992 break; 1993 } 1994 1995 for (i = 1; i <= 10; ++i) { 1996 events = src_readl(dev, MUnit.IDR); 1997 if (events & (1<<23)) { 1998 pr_warn(" AIF not cleared by firmware - %d/%d)\n", 1999 i, 10); 2000 ssleep(1); 2001 } 2002 } 2003 } 2004 2005 static int get_fib_count(struct aac_dev *dev) 2006 { 2007 unsigned int num = 0; 2008 struct list_head *entry; 2009 unsigned long flagv; 2010 2011 /* 2012 * Warning: no sleep allowed while 2013 * holding spinlock. We take the estimate 2014 * and pre-allocate a set of fibs outside the 2015 * lock. 2016 */ 2017 num = le32_to_cpu(dev->init->r7.adapter_fibs_size) 2018 / sizeof(struct hw_fib); /* some extra */ 2019 spin_lock_irqsave(&dev->fib_lock, flagv); 2020 entry = dev->fib_list.next; 2021 while (entry != &dev->fib_list) { 2022 entry = entry->next; 2023 ++num; 2024 } 2025 spin_unlock_irqrestore(&dev->fib_lock, flagv); 2026 2027 return num; 2028 } 2029 2030 static int fillup_pools(struct aac_dev *dev, struct hw_fib **hw_fib_pool, 2031 struct fib **fib_pool, 2032 unsigned int num) 2033 { 2034 struct hw_fib **hw_fib_p; 2035 struct fib **fib_p; 2036 2037 hw_fib_p = hw_fib_pool; 2038 fib_p = fib_pool; 2039 while (hw_fib_p < &hw_fib_pool[num]) { 2040 *(hw_fib_p) = kmalloc(sizeof(struct hw_fib), GFP_KERNEL); 2041 if (!(*(hw_fib_p++))) { 2042 --hw_fib_p; 2043 break; 2044 } 2045 2046 *(fib_p) = kmalloc(sizeof(struct fib), GFP_KERNEL); 2047 if (!(*(fib_p++))) { 2048 kfree(*(--hw_fib_p)); 2049 break; 2050 } 2051 } 2052 2053 /* 2054 * Get the actual number of allocated fibs 2055 */ 2056 num = hw_fib_p - hw_fib_pool; 2057 return num; 2058 } 2059 2060 static void wakeup_fibctx_threads(struct aac_dev *dev, 2061 struct hw_fib **hw_fib_pool, 2062 struct fib **fib_pool, 2063 struct fib *fib, 2064 struct hw_fib *hw_fib, 2065 unsigned int num) 2066 { 2067 unsigned long flagv; 2068 struct list_head *entry; 2069 struct hw_fib **hw_fib_p; 2070 struct fib **fib_p; 2071 u32 time_now, time_last; 2072 struct hw_fib *hw_newfib; 2073 struct fib *newfib; 2074 struct aac_fib_context *fibctx; 2075 2076 time_now = jiffies/HZ; 2077 spin_lock_irqsave(&dev->fib_lock, flagv); 2078 entry = dev->fib_list.next; 2079 /* 2080 * For each Context that is on the 2081 * fibctxList, make a copy of the 2082 * fib, and then set the event to wake up the 2083 * thread that is waiting for it. 2084 */ 2085 2086 hw_fib_p = hw_fib_pool; 2087 fib_p = fib_pool; 2088 while (entry != &dev->fib_list) { 2089 /* 2090 * Extract the fibctx 2091 */ 2092 fibctx = list_entry(entry, struct aac_fib_context, 2093 next); 2094 /* 2095 * Check if the queue is getting 2096 * backlogged 2097 */ 2098 if (fibctx->count > 20) { 2099 /* 2100 * It's *not* jiffies folks, 2101 * but jiffies / HZ so do not 2102 * panic ... 2103 */ 2104 time_last = fibctx->jiffies; 2105 /* 2106 * Has it been > 2 minutes 2107 * since the last read off 2108 * the queue? 2109 */ 2110 if ((time_now - time_last) > aif_timeout) { 2111 entry = entry->next; 2112 aac_close_fib_context(dev, fibctx); 2113 continue; 2114 } 2115 } 2116 /* 2117 * Warning: no sleep allowed while 2118 * holding spinlock 2119 */ 2120 if (hw_fib_p >= &hw_fib_pool[num]) { 2121 pr_warn("aifd: didn't allocate NewFib\n"); 2122 entry = entry->next; 2123 continue; 2124 } 2125 2126 hw_newfib = *hw_fib_p; 2127 *(hw_fib_p++) = NULL; 2128 newfib = *fib_p; 2129 *(fib_p++) = NULL; 2130 /* 2131 * Make the copy of the FIB 2132 */ 2133 memcpy(hw_newfib, hw_fib, sizeof(struct hw_fib)); 2134 memcpy(newfib, fib, sizeof(struct fib)); 2135 newfib->hw_fib_va = hw_newfib; 2136 /* 2137 * Put the FIB onto the 2138 * fibctx's fibs 2139 */ 2140 list_add_tail(&newfib->fiblink, &fibctx->fib_list); 2141 fibctx->count++; 2142 /* 2143 * Set the event to wake up the 2144 * thread that is waiting. 2145 */ 2146 up(&fibctx->wait_sem); 2147 2148 entry = entry->next; 2149 } 2150 /* 2151 * Set the status of this FIB 2152 */ 2153 *(__le32 *)hw_fib->data = cpu_to_le32(ST_OK); 2154 aac_fib_adapter_complete(fib, sizeof(u32)); 2155 spin_unlock_irqrestore(&dev->fib_lock, flagv); 2156 2157 } 2158 2159 static void aac_process_events(struct aac_dev *dev) 2160 { 2161 struct hw_fib *hw_fib; 2162 struct fib *fib; 2163 unsigned long flags; 2164 spinlock_t *t_lock; 2165 2166 t_lock = dev->queues->queue[HostNormCmdQueue].lock; 2167 spin_lock_irqsave(t_lock, flags); 2168 2169 while (!list_empty(&(dev->queues->queue[HostNormCmdQueue].cmdq))) { 2170 struct list_head *entry; 2171 struct aac_aifcmd *aifcmd; 2172 unsigned int num; 2173 struct hw_fib **hw_fib_pool, **hw_fib_p; 2174 struct fib **fib_pool, **fib_p; 2175 2176 set_current_state(TASK_RUNNING); 2177 2178 entry = dev->queues->queue[HostNormCmdQueue].cmdq.next; 2179 list_del(entry); 2180 2181 t_lock = dev->queues->queue[HostNormCmdQueue].lock; 2182 spin_unlock_irqrestore(t_lock, flags); 2183 2184 fib = list_entry(entry, struct fib, fiblink); 2185 hw_fib = fib->hw_fib_va; 2186 if (dev->sa_firmware) { 2187 /* Thor AIF */ 2188 aac_handle_sa_aif(dev, fib); 2189 aac_fib_adapter_complete(fib, (u16)sizeof(u32)); 2190 goto free_fib; 2191 } 2192 /* 2193 * We will process the FIB here or pass it to a 2194 * worker thread that is TBD. We Really can't 2195 * do anything at this point since we don't have 2196 * anything defined for this thread to do. 2197 */ 2198 memset(fib, 0, sizeof(struct fib)); 2199 fib->type = FSAFS_NTC_FIB_CONTEXT; 2200 fib->size = sizeof(struct fib); 2201 fib->hw_fib_va = hw_fib; 2202 fib->data = hw_fib->data; 2203 fib->dev = dev; 2204 /* 2205 * We only handle AifRequest fibs from the adapter. 2206 */ 2207 2208 aifcmd = (struct aac_aifcmd *) hw_fib->data; 2209 if (aifcmd->command == cpu_to_le32(AifCmdDriverNotify)) { 2210 /* Handle Driver Notify Events */ 2211 aac_handle_aif(dev, fib); 2212 *(__le32 *)hw_fib->data = cpu_to_le32(ST_OK); 2213 aac_fib_adapter_complete(fib, (u16)sizeof(u32)); 2214 goto free_fib; 2215 } 2216 /* 2217 * The u32 here is important and intended. We are using 2218 * 32bit wrapping time to fit the adapter field 2219 */ 2220 2221 /* Sniff events */ 2222 if (aifcmd->command == cpu_to_le32(AifCmdEventNotify) 2223 || aifcmd->command == cpu_to_le32(AifCmdJobProgress)) { 2224 aac_handle_aif(dev, fib); 2225 } 2226 2227 /* 2228 * get number of fibs to process 2229 */ 2230 num = get_fib_count(dev); 2231 if (!num) 2232 goto free_fib; 2233 2234 hw_fib_pool = kmalloc_array(num, sizeof(struct hw_fib *), 2235 GFP_KERNEL); 2236 if (!hw_fib_pool) 2237 goto free_fib; 2238 2239 fib_pool = kmalloc_array(num, sizeof(struct fib *), GFP_KERNEL); 2240 if (!fib_pool) 2241 goto free_hw_fib_pool; 2242 2243 /* 2244 * Fill up fib pointer pools with actual fibs 2245 * and hw_fibs 2246 */ 2247 num = fillup_pools(dev, hw_fib_pool, fib_pool, num); 2248 if (!num) 2249 goto free_mem; 2250 2251 /* 2252 * wakeup the thread that is waiting for 2253 * the response from fw (ioctl) 2254 */ 2255 wakeup_fibctx_threads(dev, hw_fib_pool, fib_pool, 2256 fib, hw_fib, num); 2257 2258 free_mem: 2259 /* Free up the remaining resources */ 2260 hw_fib_p = hw_fib_pool; 2261 fib_p = fib_pool; 2262 while (hw_fib_p < &hw_fib_pool[num]) { 2263 kfree(*hw_fib_p); 2264 kfree(*fib_p); 2265 ++fib_p; 2266 ++hw_fib_p; 2267 } 2268 kfree(fib_pool); 2269 free_hw_fib_pool: 2270 kfree(hw_fib_pool); 2271 free_fib: 2272 kfree(fib); 2273 t_lock = dev->queues->queue[HostNormCmdQueue].lock; 2274 spin_lock_irqsave(t_lock, flags); 2275 } 2276 /* 2277 * There are no more AIF's 2278 */ 2279 t_lock = dev->queues->queue[HostNormCmdQueue].lock; 2280 spin_unlock_irqrestore(t_lock, flags); 2281 } 2282 2283 static int aac_send_wellness_command(struct aac_dev *dev, char *wellness_str, 2284 u32 datasize) 2285 { 2286 struct aac_srb *srbcmd; 2287 struct sgmap64 *sg64; 2288 dma_addr_t addr; 2289 char *dma_buf; 2290 struct fib *fibptr; 2291 int ret = -ENOMEM; 2292 u32 vbus, vid; 2293 2294 fibptr = aac_fib_alloc(dev); 2295 if (!fibptr) 2296 goto out; 2297 2298 dma_buf = dma_alloc_coherent(&dev->pdev->dev, datasize, &addr, 2299 GFP_KERNEL); 2300 if (!dma_buf) 2301 goto fib_free_out; 2302 2303 aac_fib_init(fibptr); 2304 2305 vbus = (u32)le16_to_cpu(dev->supplement_adapter_info.virt_device_bus); 2306 vid = (u32)le16_to_cpu(dev->supplement_adapter_info.virt_device_target); 2307 2308 srbcmd = (struct aac_srb *)fib_data(fibptr); 2309 2310 srbcmd->function = cpu_to_le32(SRBF_ExecuteScsi); 2311 srbcmd->channel = cpu_to_le32(vbus); 2312 srbcmd->id = cpu_to_le32(vid); 2313 srbcmd->lun = 0; 2314 srbcmd->flags = cpu_to_le32(SRB_DataOut); 2315 srbcmd->timeout = cpu_to_le32(10); 2316 srbcmd->retry_limit = 0; 2317 srbcmd->cdb_size = cpu_to_le32(12); 2318 srbcmd->count = cpu_to_le32(datasize); 2319 2320 memset(srbcmd->cdb, 0, sizeof(srbcmd->cdb)); 2321 srbcmd->cdb[0] = BMIC_OUT; 2322 srbcmd->cdb[6] = WRITE_HOST_WELLNESS; 2323 memcpy(dma_buf, (char *)wellness_str, datasize); 2324 2325 sg64 = (struct sgmap64 *)&srbcmd->sg; 2326 sg64->count = cpu_to_le32(1); 2327 sg64->sg[0].addr[1] = cpu_to_le32((u32)(((addr) >> 16) >> 16)); 2328 sg64->sg[0].addr[0] = cpu_to_le32((u32)(addr & 0xffffffff)); 2329 sg64->sg[0].count = cpu_to_le32(datasize); 2330 2331 ret = aac_fib_send(ScsiPortCommand64, fibptr, sizeof(struct aac_srb), 2332 FsaNormal, 1, 1, NULL, NULL); 2333 2334 dma_free_coherent(&dev->pdev->dev, datasize, dma_buf, addr); 2335 2336 /* 2337 * Do not set XferState to zero unless 2338 * receives a response from F/W 2339 */ 2340 if (ret >= 0) 2341 aac_fib_complete(fibptr); 2342 2343 /* 2344 * FIB should be freed only after 2345 * getting the response from the F/W 2346 */ 2347 if (ret != -ERESTARTSYS) 2348 goto fib_free_out; 2349 2350 out: 2351 return ret; 2352 fib_free_out: 2353 aac_fib_free(fibptr); 2354 goto out; 2355 } 2356 2357 int aac_send_safw_hostttime(struct aac_dev *dev, struct timespec64 *now) 2358 { 2359 struct tm cur_tm; 2360 char wellness_str[] = "<HW>TD\010\0\0\0\0\0\0\0\0\0DW\0\0ZZ"; 2361 u32 datasize = sizeof(wellness_str); 2362 time64_t local_time; 2363 int ret = -ENODEV; 2364 2365 if (!dev->sa_firmware) 2366 goto out; 2367 2368 local_time = (now->tv_sec - (sys_tz.tz_minuteswest * 60)); 2369 time64_to_tm(local_time, 0, &cur_tm); 2370 cur_tm.tm_mon += 1; 2371 cur_tm.tm_year += 1900; 2372 wellness_str[8] = bin2bcd(cur_tm.tm_hour); 2373 wellness_str[9] = bin2bcd(cur_tm.tm_min); 2374 wellness_str[10] = bin2bcd(cur_tm.tm_sec); 2375 wellness_str[12] = bin2bcd(cur_tm.tm_mon); 2376 wellness_str[13] = bin2bcd(cur_tm.tm_mday); 2377 wellness_str[14] = bin2bcd(cur_tm.tm_year / 100); 2378 wellness_str[15] = bin2bcd(cur_tm.tm_year % 100); 2379 2380 ret = aac_send_wellness_command(dev, wellness_str, datasize); 2381 2382 out: 2383 return ret; 2384 } 2385 2386 int aac_send_hosttime(struct aac_dev *dev, struct timespec64 *now) 2387 { 2388 int ret = -ENOMEM; 2389 struct fib *fibptr; 2390 __le32 *info; 2391 2392 fibptr = aac_fib_alloc(dev); 2393 if (!fibptr) 2394 goto out; 2395 2396 aac_fib_init(fibptr); 2397 info = (__le32 *)fib_data(fibptr); 2398 *info = cpu_to_le32(now->tv_sec); /* overflow in y2106 */ 2399 ret = aac_fib_send(SendHostTime, fibptr, sizeof(*info), FsaNormal, 2400 1, 1, NULL, NULL); 2401 2402 /* 2403 * Do not set XferState to zero unless 2404 * receives a response from F/W 2405 */ 2406 if (ret >= 0) 2407 aac_fib_complete(fibptr); 2408 2409 /* 2410 * FIB should be freed only after 2411 * getting the response from the F/W 2412 */ 2413 if (ret != -ERESTARTSYS) 2414 aac_fib_free(fibptr); 2415 2416 out: 2417 return ret; 2418 } 2419 2420 /** 2421 * aac_command_thread - command processing thread 2422 * @dev: Adapter to monitor 2423 * 2424 * Waits on the commandready event in it's queue. When the event gets set 2425 * it will pull FIBs off it's queue. It will continue to pull FIBs off 2426 * until the queue is empty. When the queue is empty it will wait for 2427 * more FIBs. 2428 */ 2429 2430 int aac_command_thread(void *data) 2431 { 2432 struct aac_dev *dev = data; 2433 DECLARE_WAITQUEUE(wait, current); 2434 unsigned long next_jiffies = jiffies + HZ; 2435 unsigned long next_check_jiffies = next_jiffies; 2436 long difference = HZ; 2437 2438 /* 2439 * We can only have one thread per adapter for AIF's. 2440 */ 2441 if (dev->aif_thread) 2442 return -EINVAL; 2443 2444 /* 2445 * Let the DPC know it has a place to send the AIF's to. 2446 */ 2447 dev->aif_thread = 1; 2448 add_wait_queue(&dev->queues->queue[HostNormCmdQueue].cmdready, &wait); 2449 set_current_state(TASK_INTERRUPTIBLE); 2450 dprintk ((KERN_INFO "aac_command_thread start\n")); 2451 while (1) { 2452 2453 aac_process_events(dev); 2454 2455 /* 2456 * Background activity 2457 */ 2458 if ((time_before(next_check_jiffies,next_jiffies)) 2459 && ((difference = next_check_jiffies - jiffies) <= 0)) { 2460 next_check_jiffies = next_jiffies; 2461 if (aac_adapter_check_health(dev) == 0) { 2462 difference = ((long)(unsigned)check_interval) 2463 * HZ; 2464 next_check_jiffies = jiffies + difference; 2465 } else if (!dev->queues) 2466 break; 2467 } 2468 if (!time_before(next_check_jiffies,next_jiffies) 2469 && ((difference = next_jiffies - jiffies) <= 0)) { 2470 struct timespec64 now; 2471 int ret; 2472 2473 /* Don't even try to talk to adapter if its sick */ 2474 ret = aac_adapter_check_health(dev); 2475 if (ret || !dev->queues) 2476 break; 2477 next_check_jiffies = jiffies 2478 + ((long)(unsigned)check_interval) 2479 * HZ; 2480 ktime_get_real_ts64(&now); 2481 2482 /* Synchronize our watches */ 2483 if (((NSEC_PER_SEC - (NSEC_PER_SEC / HZ)) > now.tv_nsec) 2484 && (now.tv_nsec > (NSEC_PER_SEC / HZ))) 2485 difference = HZ + HZ / 2 - 2486 now.tv_nsec / (NSEC_PER_SEC / HZ); 2487 else { 2488 if (now.tv_nsec > NSEC_PER_SEC / 2) 2489 ++now.tv_sec; 2490 2491 if (dev->sa_firmware) 2492 ret = 2493 aac_send_safw_hostttime(dev, &now); 2494 else 2495 ret = aac_send_hosttime(dev, &now); 2496 2497 difference = (long)(unsigned)update_interval*HZ; 2498 } 2499 next_jiffies = jiffies + difference; 2500 if (time_before(next_check_jiffies,next_jiffies)) 2501 difference = next_check_jiffies - jiffies; 2502 } 2503 if (difference <= 0) 2504 difference = 1; 2505 set_current_state(TASK_INTERRUPTIBLE); 2506 2507 if (kthread_should_stop()) 2508 break; 2509 2510 /* 2511 * we probably want usleep_range() here instead of the 2512 * jiffies computation 2513 */ 2514 schedule_timeout(difference); 2515 2516 if (kthread_should_stop()) 2517 break; 2518 } 2519 if (dev->queues) 2520 remove_wait_queue(&dev->queues->queue[HostNormCmdQueue].cmdready, &wait); 2521 dev->aif_thread = 0; 2522 return 0; 2523 } 2524 2525 int aac_acquire_irq(struct aac_dev *dev) 2526 { 2527 int i; 2528 int j; 2529 int ret = 0; 2530 2531 if (!dev->sync_mode && dev->msi_enabled && dev->max_msix > 1) { 2532 for (i = 0; i < dev->max_msix; i++) { 2533 dev->aac_msix[i].vector_no = i; 2534 dev->aac_msix[i].dev = dev; 2535 if (request_irq(pci_irq_vector(dev->pdev, i), 2536 dev->a_ops.adapter_intr, 2537 0, "aacraid", &(dev->aac_msix[i]))) { 2538 printk(KERN_ERR "%s%d: Failed to register IRQ for vector %d.\n", 2539 dev->name, dev->id, i); 2540 for (j = 0 ; j < i ; j++) 2541 free_irq(pci_irq_vector(dev->pdev, j), 2542 &(dev->aac_msix[j])); 2543 pci_disable_msix(dev->pdev); 2544 ret = -1; 2545 } 2546 } 2547 } else { 2548 dev->aac_msix[0].vector_no = 0; 2549 dev->aac_msix[0].dev = dev; 2550 2551 if (request_irq(dev->pdev->irq, dev->a_ops.adapter_intr, 2552 IRQF_SHARED, "aacraid", 2553 &(dev->aac_msix[0])) < 0) { 2554 if (dev->msi) 2555 pci_disable_msi(dev->pdev); 2556 printk(KERN_ERR "%s%d: Interrupt unavailable.\n", 2557 dev->name, dev->id); 2558 ret = -1; 2559 } 2560 } 2561 return ret; 2562 } 2563 2564 void aac_free_irq(struct aac_dev *dev) 2565 { 2566 int i; 2567 int cpu; 2568 2569 cpu = cpumask_first(cpu_online_mask); 2570 if (aac_is_src(dev)) { 2571 if (dev->max_msix > 1) { 2572 for (i = 0; i < dev->max_msix; i++) 2573 free_irq(pci_irq_vector(dev->pdev, i), 2574 &(dev->aac_msix[i])); 2575 } else { 2576 free_irq(dev->pdev->irq, &(dev->aac_msix[0])); 2577 } 2578 } else { 2579 free_irq(dev->pdev->irq, dev); 2580 } 2581 if (dev->msi) 2582 pci_disable_msi(dev->pdev); 2583 else if (dev->max_msix > 1) 2584 pci_disable_msix(dev->pdev); 2585 } 2586