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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 | /* * Adaptec AAC series RAID controller driver * (c) Copyright 2001 Red Hat Inc. <alan@redhat.com> * * based on the old aacraid driver that is.. * Adaptec aacraid device driver for Linux. * * Copyright (c) 2000 Adaptec, Inc. (aacraid@adaptec.com) * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your option) * any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; see the file COPYING. If not, write to * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. * * Module Name: * commctrl.c * * Abstract: Contains all routines for control of the AFA comm layer * */ #include <linux/config.h> #include <linux/kernel.h> #include <linux/init.h> #include <linux/types.h> #include <linux/sched.h> #include <linux/pci.h> #include <linux/spinlock.h> #include <linux/slab.h> #include <linux/completion.h> #include <linux/blkdev.h> #include <asm/semaphore.h> #include <asm/uaccess.h> #include "scsi.h" #include "hosts.h" #include "aacraid.h" /** * ioctl_send_fib - send a FIB from userspace * @dev: adapter is being processed * @arg: arguments to the ioctl call * * This routine sends a fib to the adapter on behalf of a user level * program. */ static int ioctl_send_fib(struct aac_dev * dev, void *arg) { struct hw_fib * kfib; struct fib *fibptr; fibptr = fib_alloc(dev); if(fibptr == NULL) return -ENOMEM; kfib = fibptr->hw_fib; /* * First copy in the header so that we can check the size field. */ if (copy_from_user((void *)kfib, arg, sizeof(struct aac_fibhdr))) { fib_free(fibptr); return -EFAULT; } /* * Since we copy based on the fib header size, make sure that we * will not overrun the buffer when we copy the memory. Return * an error if we would. */ if(le32_to_cpu(kfib->header.Size) > sizeof(struct hw_fib) - sizeof(struct aac_fibhdr)) { fib_free(fibptr); return -EINVAL; } if (copy_from_user((void *) kfib, arg, le32_to_cpu(kfib->header.Size) + sizeof(struct aac_fibhdr))) { fib_free(fibptr); return -EFAULT; } if (kfib->header.Command == cpu_to_le32(TakeABreakPt)) { aac_adapter_interrupt(dev); /* * Since we didn't really send a fib, zero out the state to allow * cleanup code not to assert. */ kfib->header.XferState = 0; } else { if (fib_send(kfib->header.Command, fibptr, le32_to_cpu(kfib->header.Size) , FsaNormal, 1, 1, NULL, NULL) != 0) { fib_free(fibptr); return -EINVAL; } if (fib_complete(fibptr) != 0) { fib_free(fibptr); return -EINVAL; } } /* * Make sure that the size returned by the adapter (which includes * the header) is less than or equal to the size of a fib, so we * don't corrupt application data. Then copy that size to the user * buffer. (Don't try to add the header information again, since it * was already included by the adapter.) */ if (copy_to_user(arg, (void *)kfib, kfib->header.Size)) { fib_free(fibptr); return -EFAULT; } fib_free(fibptr); return 0; } /** * open_getadapter_fib - Get the next fib * * This routine will get the next Fib, if available, from the AdapterFibContext * passed in from the user. */ static int open_getadapter_fib(struct aac_dev * dev, void *arg) { struct aac_fib_context * fibctx; int status; unsigned long flags; fibctx = kmalloc(sizeof(struct aac_fib_context), GFP_KERNEL); if (fibctx == NULL) { status = -ENOMEM; } else { fibctx->type = FSAFS_NTC_GET_ADAPTER_FIB_CONTEXT; fibctx->size = sizeof(struct aac_fib_context); /* * Initialize the mutex used to wait for the next AIF. */ init_MUTEX_LOCKED(&fibctx->wait_sem); fibctx->wait = 0; /* * Initialize the fibs and set the count of fibs on * the list to 0. */ fibctx->count = 0; AAC_INIT_LIST_HEAD(&fibctx->hw_fib_list); fibctx->jiffies = jiffies/HZ; /* * Now add this context onto the adapter's * AdapterFibContext list. */ spin_lock_irqsave(&dev->fib_lock, flags); list_add_tail(&fibctx->next, &dev->fib_list); spin_unlock_irqrestore(&dev->fib_lock, flags); if (copy_to_user(arg, &fibctx, sizeof(struct aac_fib_context *))) { status = -EFAULT; } else { status = 0; } } return status; } /** * next_getadapter_fib - get the next fib * @dev: adapter to use * @arg: ioctl argument * * This routine will get the next Fib, if available, from the AdapterFibContext * passed in from the user. */ static int next_getadapter_fib(struct aac_dev * dev, void *arg) { struct fib_ioctl f; struct aac_fib_context *fibctx, *aifcp; struct hw_fib * hw_fib; int status; struct list_head * entry; int found; unsigned long flags; if(copy_from_user((void *)&f, arg, sizeof(struct fib_ioctl))) return -EFAULT; /* * Extract the AdapterFibContext from the Input parameters. */ fibctx = (struct aac_fib_context *) f.fibctx; /* * Verify that the HANDLE passed in was a valid AdapterFibContext * * Search the list of AdapterFibContext addresses on the adapter * to be sure this is a valid address */ found = 0; entry = dev->fib_list.next; while(entry != &dev->fib_list) { aifcp = list_entry(entry, struct aac_fib_context, next); if(fibctx == aifcp) { /* We found a winner */ found = 1; break; } entry = entry->next; } if (found == 0) return -EINVAL; if((fibctx->type != FSAFS_NTC_GET_ADAPTER_FIB_CONTEXT) || (fibctx->size != sizeof(struct aac_fib_context))) return -EINVAL; status = 0; spin_lock_irqsave(&dev->fib_lock, flags); /* * If there are no fibs to send back, then either wait or return * -EAGAIN */ return_fib: if (!aac_list_empty(&fibctx->hw_fib_list)) { struct aac_list_head * entry; /* * Pull the next fib from the fibs */ entry = (struct aac_list_head*)(ulong)fibctx->hw_fib_list.next; aac_list_del(entry); hw_fib = aac_list_entry(entry, struct hw_fib, header.FibLinks); fibctx->count--; spin_unlock_irqrestore(&dev->fib_lock, flags); if (copy_to_user(f.fib, hw_fib, sizeof(struct hw_fib))) { kfree(hw_fib); return -EFAULT; } /* * Free the space occupied by this copy of the fib. */ kfree(hw_fib); status = 0; fibctx->jiffies = jiffies/HZ; } else { spin_unlock_irqrestore(&dev->fib_lock, flags); if (f.wait) { if(down_interruptible(&fibctx->wait_sem) < 0) { status = -EINTR; } else { /* Lock again and retry */ spin_lock_irqsave(&dev->fib_lock, flags); goto return_fib; } } else { status = -EAGAIN; } } return status; } int aac_close_fib_context(struct aac_dev * dev, struct aac_fib_context * fibctx) { struct hw_fib *hw_fib; /* * First free any FIBs that have not been consumed. */ while (!aac_list_empty(&fibctx->hw_fib_list)) { struct aac_list_head * entry; /* * Pull the next fib from the fibs */ entry = (struct aac_list_head*)(ulong)(fibctx->hw_fib_list.next); aac_list_del(entry); hw_fib = aac_list_entry(entry, struct hw_fib, header.FibLinks); fibctx->count--; /* * Free the space occupied by this copy of the fib. */ kfree(hw_fib); } /* * Remove the Context from the AdapterFibContext List */ list_del(&fibctx->next); /* * Invalidate context */ fibctx->type = 0; /* * Free the space occupied by the Context */ kfree(fibctx); return 0; } /** * close_getadapter_fib - close down user fib context * @dev: adapter * @arg: ioctl arguments * * This routine will close down the fibctx passed in from the user. */ static int close_getadapter_fib(struct aac_dev * dev, void *arg) { struct aac_fib_context *fibctx, *aifcp; int status; unsigned long flags; struct list_head * entry; int found; /* * Extract the fibctx from the input parameters */ fibctx = arg; /* * Verify that the HANDLE passed in was a valid AdapterFibContext * * Search the list of AdapterFibContext addresses on the adapter * to be sure this is a valid address */ found = 0; entry = dev->fib_list.next; while(entry != &dev->fib_list) { aifcp = list_entry(entry, struct aac_fib_context, next); if(fibctx == aifcp) { /* We found a winner */ found = 1; break; } entry = entry->next; } if(found == 0) return 0; /* Already gone */ if((fibctx->type != FSAFS_NTC_GET_ADAPTER_FIB_CONTEXT) || (fibctx->size != sizeof(struct aac_fib_context))) return -EINVAL; spin_lock_irqsave(&dev->fib_lock, flags); status = aac_close_fib_context(dev, fibctx); spin_unlock_irqrestore(&dev->fib_lock, flags); return status; } /** * check_revision - close down user fib context * @dev: adapter * @arg: ioctl arguments * * This routine returns the firmware version. * Under Linux, there have been no version incompatibilities, so this is simple! */ static int check_revision(struct aac_dev *dev, void *arg) { struct revision response; response.compat = 1; response.version = dev->adapter_info.kernelrev; response.build = dev->adapter_info.kernelbuild; if (copy_to_user(arg, &response, sizeof(response))) return -EFAULT; return 0; } /** * * aac_send_raw_scb * */ int aac_send_raw_srb(struct aac_dev* dev, void* arg) { struct fib* srbfib; int status; struct aac_srb *srbcmd; struct aac_srb *user_srb = arg; struct aac_srb_reply* user_reply; struct aac_srb_reply* reply; u32 fibsize = 0; u32 flags = 0; s32 rcode = 0; u32 data_dir; ulong sg_user[32]; ulong sg_list[32]; u32 sg_indx = 0; u32 byte_count = 0; u32 actual_fibsize = 0; int i; if (!capable(CAP_SYS_ADMIN)){ printk(KERN_DEBUG"aacraid: No permission to send raw srb\n"); return -EPERM; } /* * Allocate and initialize a Fib then setup a BlockWrite command */ if (!(srbfib = fib_alloc(dev))) { return -1; } fib_init(srbfib); srbcmd = (struct aac_srb*) fib_data(srbfib); if(copy_from_user((void*)&fibsize, (void*)&user_srb->count,sizeof(u32))){ printk(KERN_DEBUG"aacraid: Could not copy data size from user\n"); rcode = -EFAULT; goto cleanup; } if(copy_from_user(srbcmd, user_srb,fibsize)){ printk(KERN_DEBUG"aacraid: Could not copy srb from user\n"); rcode = -EFAULT; goto cleanup; } user_reply = arg+fibsize; flags = srbcmd->flags; // Fix up srb for endian and force some values srbcmd->function = cpu_to_le32(SRBF_ExecuteScsi); // Force this srbcmd->channel = cpu_to_le32(srbcmd->channel); srbcmd->target = cpu_to_le32(srbcmd->target); srbcmd->lun = cpu_to_le32(srbcmd->lun); srbcmd->flags = cpu_to_le32(srbcmd->flags); srbcmd->timeout = cpu_to_le32(srbcmd->timeout); srbcmd->retry_limit =cpu_to_le32(0); // Obsolete parameter srbcmd->cdb_size = cpu_to_le32(srbcmd->cdb_size); switch(srbcmd->flags){ case SRB_DataOut: data_dir = SCSI_DATA_WRITE; break; case (SRB_DataIn | SRB_DataOut): data_dir = SCSI_DATA_UNKNOWN; break; case SRB_DataIn: data_dir = SCSI_DATA_READ; break; default: data_dir = SCSI_DATA_NONE; } if( dev->pae_support ==1 ) { struct sgmap64* psg = (struct sgmap64*)&srbcmd->sg; byte_count = 0; // This should also catch if user used the 32 bit sgmap actual_fibsize = sizeof (struct aac_srb) + (((srbcmd->sg.count & 0xff) - 1) * sizeof (struct sgentry64)); if(actual_fibsize != fibsize){ // User made a mistake - should not continue printk(KERN_DEBUG"aacraid: Bad Size specified in Raw SRB command\n"); rcode = -EINVAL; goto cleanup; } for (i = 0; i < psg->count; i++) { dma_addr_t addr; u64 le_addr; void* p; p = kmalloc(psg->sg[i].count,GFP_KERNEL|__GFP_DMA); if(p == 0) { printk(KERN_DEBUG"aacraid: Could not allocate SG buffer - size = %d buffer number %d of %d\n", psg->sg[i].count,i,psg->count); rcode = -ENOMEM; goto cleanup; } sg_user[i] = (ulong)psg->sg[i].addr; sg_list[i] = (ulong)p; // save so we can clean up later sg_indx = i; if( flags & SRB_DataOut ){ if(copy_from_user(p,psg->sg[i].addr,psg->sg[i].count)){ printk(KERN_DEBUG"aacraid: Could not copy sg data from user\n"); rcode = -EFAULT; goto cleanup; } } addr = pci_map_single(dev->pdev, p, psg->sg[i].count, scsi_to_pci_dma_dir(data_dir)); le_addr = cpu_to_le64(addr); psg->sg[i].addr[1] = (u32)(le_addr>>32); psg->sg[i].addr[0] = (u32)(le_addr & 0xffffffff); psg->sg[i].count = cpu_to_le32(psg->sg[i].count); byte_count += psg->sg[i].count; } srbcmd->count = cpu_to_le32(byte_count); status = fib_send(ScsiPortCommand64, srbfib, actual_fibsize, FsaNormal, 1, 1,0,0); } else { struct sgmap* psg = &srbcmd->sg; byte_count = 0; actual_fibsize = sizeof (struct aac_srb) + (((srbcmd->sg.count & 0xff) - 1) * sizeof (struct sgentry)); if(actual_fibsize != fibsize){ // User made a mistake - should not continue printk(KERN_DEBUG"aacraid: Bad Size specified in Raw SRB command\n"); rcode = -EINVAL; goto cleanup; } for (i = 0; i < psg->count; i++) { dma_addr_t addr; void* p; p = kmalloc(psg->sg[i].count,GFP_KERNEL); if(p == 0) { printk(KERN_DEBUG"aacraid: Could not allocate SG buffer - size = %d buffer number %d of %d\n", psg->sg[i].count,i,psg->count); rcode = -ENOMEM; goto cleanup; } sg_user[i] = (ulong)(psg->sg[i].addr); sg_list[i] = (ulong)p; // save so we can clean up later sg_indx = i; if( flags & SRB_DataOut ){ if(copy_from_user((void*)p,(void*)(ulong)(psg->sg[i].addr),psg->sg[i].count)){ printk(KERN_DEBUG"aacraid: Could not copy sg data from user\n"); rcode = -EFAULT; goto cleanup; } } addr = pci_map_single(dev->pdev, p, psg->sg[i].count, scsi_to_pci_dma_dir(data_dir)); psg->sg[i].addr = cpu_to_le32(addr); psg->sg[i].count = cpu_to_le32(psg->sg[i].count); byte_count += psg->sg[i].count; } srbcmd->count = cpu_to_le32(byte_count); status = fib_send(ScsiPortCommand, srbfib, actual_fibsize, FsaNormal, 1, 1, 0, 0); } if (status != 0){ printk(KERN_DEBUG"aacraid: Could not send raw srb fib to hba\n"); rcode = -1; goto cleanup; } if( flags & SRB_DataIn ) { for(i = 0 ; i <= sg_indx; i++){ if(copy_to_user((void*)(sg_user[i]),(void*)(sg_list[i]),le32_to_cpu(srbcmd->sg.sg[i].count))){ printk(KERN_DEBUG"aacraid: Could not copy sg data to user\n"); rcode = -EFAULT; goto cleanup; } } } reply = (struct aac_srb_reply *) fib_data(srbfib); if(copy_to_user(user_reply,reply,sizeof(struct aac_srb_reply))){ printk(KERN_DEBUG"aacraid: Could not copy reply to user\n"); rcode = -EFAULT; goto cleanup; } cleanup: for(i=0; i <= sg_indx; i++){ kfree((void*)sg_list[i]); } fib_complete(srbfib); fib_free(srbfib); return rcode; } struct aac_pci_info { u32 bus; u32 slot; }; int aac_get_pci_info(struct aac_dev* dev, void* arg) { struct aac_pci_info pci_info; pci_info.bus = dev->pdev->bus->number; pci_info.slot = PCI_SLOT(dev->pdev->devfn); if(copy_to_user( arg, (void*)&pci_info, sizeof(struct aac_pci_info))){ printk(KERN_DEBUG "aacraid: Could not copy pci info\n"); return -EFAULT; } return 0; } int aac_do_ioctl(struct aac_dev * dev, int cmd, void *arg) { int status; /* * HBA gets first crack */ status = aac_dev_ioctl(dev, cmd, arg); if(status != -ENOTTY) return status; switch (cmd) { case FSACTL_MINIPORT_REV_CHECK: status = check_revision(dev, arg); break; case FSACTL_SENDFIB: status = ioctl_send_fib(dev, arg); break; case FSACTL_OPEN_GET_ADAPTER_FIB: status = open_getadapter_fib(dev, arg); break; case FSACTL_GET_NEXT_ADAPTER_FIB: status = next_getadapter_fib(dev, arg); break; case FSACTL_CLOSE_GET_ADAPTER_FIB: status = close_getadapter_fib(dev, arg); break; case FSACTL_SEND_RAW_SRB: status = aac_send_raw_srb(dev,arg); break; case FSACTL_GET_PCI_INFO: status = aac_get_pci_info(dev,arg); break; default: status = -ENOTTY; break; } return status; } |