Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * Adaptec AAC series RAID controller driver |
| 3 | * (c) Copyright 2001 Red Hat Inc. <alan@redhat.com> |
| 4 | * |
| 5 | * based on the old aacraid driver that is.. |
| 6 | * Adaptec aacraid device driver for Linux. |
| 7 | * |
| 8 | * Copyright (c) 2000 Adaptec, Inc. (aacraid@adaptec.com) |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify |
| 11 | * it under the terms of the GNU General Public License as published by |
| 12 | * the Free Software Foundation; either version 2, or (at your option) |
| 13 | * any later version. |
| 14 | * |
| 15 | * This program is distributed in the hope that it will be useful, |
| 16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 18 | * GNU General Public License for more details. |
| 19 | * |
| 20 | * You should have received a copy of the GNU General Public License |
| 21 | * along with this program; see the file COPYING. If not, write to |
| 22 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. |
| 23 | * |
| 24 | * Module Name: |
| 25 | * commctrl.c |
| 26 | * |
| 27 | * Abstract: Contains all routines for control of the AFA comm layer |
| 28 | * |
| 29 | */ |
| 30 | |
| 31 | #include <linux/kernel.h> |
| 32 | #include <linux/init.h> |
| 33 | #include <linux/types.h> |
| 34 | #include <linux/sched.h> |
| 35 | #include <linux/pci.h> |
| 36 | #include <linux/spinlock.h> |
| 37 | #include <linux/slab.h> |
| 38 | #include <linux/completion.h> |
| 39 | #include <linux/dma-mapping.h> |
| 40 | #include <linux/blkdev.h> |
| 41 | #include <asm/semaphore.h> |
| 42 | #include <asm/uaccess.h> |
| 43 | |
| 44 | #include "aacraid.h" |
| 45 | |
| 46 | /** |
| 47 | * ioctl_send_fib - send a FIB from userspace |
| 48 | * @dev: adapter is being processed |
| 49 | * @arg: arguments to the ioctl call |
| 50 | * |
| 51 | * This routine sends a fib to the adapter on behalf of a user level |
| 52 | * program. |
| 53 | */ |
| 54 | |
| 55 | static int ioctl_send_fib(struct aac_dev * dev, void __user *arg) |
| 56 | { |
| 57 | struct hw_fib * kfib; |
| 58 | struct fib *fibptr; |
| 59 | |
| 60 | fibptr = fib_alloc(dev); |
| 61 | if(fibptr == NULL) |
| 62 | return -ENOMEM; |
| 63 | |
| 64 | kfib = fibptr->hw_fib; |
| 65 | /* |
| 66 | * First copy in the header so that we can check the size field. |
| 67 | */ |
| 68 | if (copy_from_user((void *)kfib, arg, sizeof(struct aac_fibhdr))) { |
| 69 | fib_free(fibptr); |
| 70 | return -EFAULT; |
| 71 | } |
| 72 | /* |
| 73 | * Since we copy based on the fib header size, make sure that we |
| 74 | * will not overrun the buffer when we copy the memory. Return |
| 75 | * an error if we would. |
| 76 | */ |
| 77 | if (le16_to_cpu(kfib->header.Size) > |
| 78 | sizeof(struct hw_fib) - sizeof(struct aac_fibhdr)) { |
| 79 | fib_free(fibptr); |
| 80 | return -EINVAL; |
| 81 | } |
| 82 | |
| 83 | if (copy_from_user(kfib, arg, le16_to_cpu(kfib->header.Size) + |
| 84 | sizeof(struct aac_fibhdr))) { |
| 85 | fib_free(fibptr); |
| 86 | return -EFAULT; |
| 87 | } |
| 88 | |
| 89 | if (kfib->header.Command == cpu_to_le32(TakeABreakPt)) { |
| 90 | aac_adapter_interrupt(dev); |
| 91 | /* |
| 92 | * Since we didn't really send a fib, zero out the state to allow |
| 93 | * cleanup code not to assert. |
| 94 | */ |
| 95 | kfib->header.XferState = 0; |
| 96 | } else { |
| 97 | int retval = fib_send(kfib->header.Command, fibptr, |
| 98 | le16_to_cpu(kfib->header.Size) , FsaNormal, |
| 99 | 1, 1, NULL, NULL); |
| 100 | if (retval) { |
| 101 | fib_free(fibptr); |
| 102 | return retval; |
| 103 | } |
| 104 | if (fib_complete(fibptr) != 0) { |
| 105 | fib_free(fibptr); |
| 106 | return -EINVAL; |
| 107 | } |
| 108 | } |
| 109 | /* |
| 110 | * Make sure that the size returned by the adapter (which includes |
| 111 | * the header) is less than or equal to the size of a fib, so we |
| 112 | * don't corrupt application data. Then copy that size to the user |
| 113 | * buffer. (Don't try to add the header information again, since it |
| 114 | * was already included by the adapter.) |
| 115 | */ |
| 116 | |
| 117 | if (copy_to_user(arg, (void *)kfib, kfib->header.Size)) { |
| 118 | fib_free(fibptr); |
| 119 | return -EFAULT; |
| 120 | } |
| 121 | fib_free(fibptr); |
| 122 | return 0; |
| 123 | } |
| 124 | |
| 125 | /** |
| 126 | * open_getadapter_fib - Get the next fib |
| 127 | * |
| 128 | * This routine will get the next Fib, if available, from the AdapterFibContext |
| 129 | * passed in from the user. |
| 130 | */ |
| 131 | |
| 132 | static int open_getadapter_fib(struct aac_dev * dev, void __user *arg) |
| 133 | { |
| 134 | struct aac_fib_context * fibctx; |
| 135 | int status; |
| 136 | |
| 137 | fibctx = kmalloc(sizeof(struct aac_fib_context), GFP_KERNEL); |
| 138 | if (fibctx == NULL) { |
| 139 | status = -ENOMEM; |
| 140 | } else { |
| 141 | unsigned long flags; |
| 142 | struct list_head * entry; |
| 143 | struct aac_fib_context * context; |
| 144 | |
| 145 | fibctx->type = FSAFS_NTC_GET_ADAPTER_FIB_CONTEXT; |
| 146 | fibctx->size = sizeof(struct aac_fib_context); |
| 147 | /* |
| 148 | * Yes yes, I know this could be an index, but we have a |
| 149 | * better guarantee of uniqueness for the locked loop below. |
| 150 | * Without the aid of a persistent history, this also helps |
| 151 | * reduce the chance that the opaque context would be reused. |
| 152 | */ |
| 153 | fibctx->unique = (u32)((ulong)fibctx & 0xFFFFFFFF); |
| 154 | /* |
| 155 | * Initialize the mutex used to wait for the next AIF. |
| 156 | */ |
| 157 | init_MUTEX_LOCKED(&fibctx->wait_sem); |
| 158 | fibctx->wait = 0; |
| 159 | /* |
| 160 | * Initialize the fibs and set the count of fibs on |
| 161 | * the list to 0. |
| 162 | */ |
| 163 | fibctx->count = 0; |
| 164 | INIT_LIST_HEAD(&fibctx->fib_list); |
| 165 | fibctx->jiffies = jiffies/HZ; |
| 166 | /* |
| 167 | * Now add this context onto the adapter's |
| 168 | * AdapterFibContext list. |
| 169 | */ |
| 170 | spin_lock_irqsave(&dev->fib_lock, flags); |
| 171 | /* Ensure that we have a unique identifier */ |
| 172 | entry = dev->fib_list.next; |
| 173 | while (entry != &dev->fib_list) { |
| 174 | context = list_entry(entry, struct aac_fib_context, next); |
| 175 | if (context->unique == fibctx->unique) { |
| 176 | /* Not unique (32 bits) */ |
| 177 | fibctx->unique++; |
| 178 | entry = dev->fib_list.next; |
| 179 | } else { |
| 180 | entry = entry->next; |
| 181 | } |
| 182 | } |
| 183 | list_add_tail(&fibctx->next, &dev->fib_list); |
| 184 | spin_unlock_irqrestore(&dev->fib_lock, flags); |
| 185 | if (copy_to_user(arg, &fibctx->unique, |
| 186 | sizeof(fibctx->unique))) { |
| 187 | status = -EFAULT; |
| 188 | } else { |
| 189 | status = 0; |
| 190 | } |
| 191 | } |
| 192 | return status; |
| 193 | } |
| 194 | |
| 195 | /** |
| 196 | * next_getadapter_fib - get the next fib |
| 197 | * @dev: adapter to use |
| 198 | * @arg: ioctl argument |
| 199 | * |
| 200 | * This routine will get the next Fib, if available, from the AdapterFibContext |
| 201 | * passed in from the user. |
| 202 | */ |
| 203 | |
| 204 | static int next_getadapter_fib(struct aac_dev * dev, void __user *arg) |
| 205 | { |
| 206 | struct fib_ioctl f; |
| 207 | struct fib *fib; |
| 208 | struct aac_fib_context *fibctx; |
| 209 | int status; |
| 210 | struct list_head * entry; |
| 211 | unsigned long flags; |
| 212 | |
| 213 | if(copy_from_user((void *)&f, arg, sizeof(struct fib_ioctl))) |
| 214 | return -EFAULT; |
| 215 | /* |
| 216 | * Verify that the HANDLE passed in was a valid AdapterFibContext |
| 217 | * |
| 218 | * Search the list of AdapterFibContext addresses on the adapter |
| 219 | * to be sure this is a valid address |
| 220 | */ |
| 221 | entry = dev->fib_list.next; |
| 222 | fibctx = NULL; |
| 223 | |
| 224 | while (entry != &dev->fib_list) { |
| 225 | fibctx = list_entry(entry, struct aac_fib_context, next); |
| 226 | /* |
| 227 | * Extract the AdapterFibContext from the Input parameters. |
| 228 | */ |
| 229 | if (fibctx->unique == f.fibctx) { /* We found a winner */ |
| 230 | break; |
| 231 | } |
| 232 | entry = entry->next; |
| 233 | fibctx = NULL; |
| 234 | } |
| 235 | if (!fibctx) { |
| 236 | dprintk ((KERN_INFO "Fib Context not found\n")); |
| 237 | return -EINVAL; |
| 238 | } |
| 239 | |
| 240 | if((fibctx->type != FSAFS_NTC_GET_ADAPTER_FIB_CONTEXT) || |
| 241 | (fibctx->size != sizeof(struct aac_fib_context))) { |
| 242 | dprintk ((KERN_INFO "Fib Context corrupt?\n")); |
| 243 | return -EINVAL; |
| 244 | } |
| 245 | status = 0; |
| 246 | spin_lock_irqsave(&dev->fib_lock, flags); |
| 247 | /* |
| 248 | * If there are no fibs to send back, then either wait or return |
| 249 | * -EAGAIN |
| 250 | */ |
| 251 | return_fib: |
| 252 | if (!list_empty(&fibctx->fib_list)) { |
| 253 | struct list_head * entry; |
| 254 | /* |
| 255 | * Pull the next fib from the fibs |
| 256 | */ |
| 257 | entry = fibctx->fib_list.next; |
| 258 | list_del(entry); |
| 259 | |
| 260 | fib = list_entry(entry, struct fib, fiblink); |
| 261 | fibctx->count--; |
| 262 | spin_unlock_irqrestore(&dev->fib_lock, flags); |
| 263 | if (copy_to_user(f.fib, fib->hw_fib, sizeof(struct hw_fib))) { |
| 264 | kfree(fib->hw_fib); |
| 265 | kfree(fib); |
| 266 | return -EFAULT; |
| 267 | } |
| 268 | /* |
| 269 | * Free the space occupied by this copy of the fib. |
| 270 | */ |
| 271 | kfree(fib->hw_fib); |
| 272 | kfree(fib); |
| 273 | status = 0; |
| 274 | fibctx->jiffies = jiffies/HZ; |
| 275 | } else { |
| 276 | spin_unlock_irqrestore(&dev->fib_lock, flags); |
| 277 | if (f.wait) { |
| 278 | if(down_interruptible(&fibctx->wait_sem) < 0) { |
| 279 | status = -EINTR; |
| 280 | } else { |
| 281 | /* Lock again and retry */ |
| 282 | spin_lock_irqsave(&dev->fib_lock, flags); |
| 283 | goto return_fib; |
| 284 | } |
| 285 | } else { |
| 286 | status = -EAGAIN; |
| 287 | } |
| 288 | } |
| 289 | return status; |
| 290 | } |
| 291 | |
| 292 | int aac_close_fib_context(struct aac_dev * dev, struct aac_fib_context * fibctx) |
| 293 | { |
| 294 | struct fib *fib; |
| 295 | |
| 296 | /* |
| 297 | * First free any FIBs that have not been consumed. |
| 298 | */ |
| 299 | while (!list_empty(&fibctx->fib_list)) { |
| 300 | struct list_head * entry; |
| 301 | /* |
| 302 | * Pull the next fib from the fibs |
| 303 | */ |
| 304 | entry = fibctx->fib_list.next; |
| 305 | list_del(entry); |
| 306 | fib = list_entry(entry, struct fib, fiblink); |
| 307 | fibctx->count--; |
| 308 | /* |
| 309 | * Free the space occupied by this copy of the fib. |
| 310 | */ |
| 311 | kfree(fib->hw_fib); |
| 312 | kfree(fib); |
| 313 | } |
| 314 | /* |
| 315 | * Remove the Context from the AdapterFibContext List |
| 316 | */ |
| 317 | list_del(&fibctx->next); |
| 318 | /* |
| 319 | * Invalidate context |
| 320 | */ |
| 321 | fibctx->type = 0; |
| 322 | /* |
| 323 | * Free the space occupied by the Context |
| 324 | */ |
| 325 | kfree(fibctx); |
| 326 | return 0; |
| 327 | } |
| 328 | |
| 329 | /** |
| 330 | * close_getadapter_fib - close down user fib context |
| 331 | * @dev: adapter |
| 332 | * @arg: ioctl arguments |
| 333 | * |
| 334 | * This routine will close down the fibctx passed in from the user. |
| 335 | */ |
| 336 | |
| 337 | static int close_getadapter_fib(struct aac_dev * dev, void __user *arg) |
| 338 | { |
| 339 | struct aac_fib_context *fibctx; |
| 340 | int status; |
| 341 | unsigned long flags; |
| 342 | struct list_head * entry; |
| 343 | |
| 344 | /* |
| 345 | * Verify that the HANDLE passed in was a valid AdapterFibContext |
| 346 | * |
| 347 | * Search the list of AdapterFibContext addresses on the adapter |
| 348 | * to be sure this is a valid address |
| 349 | */ |
| 350 | |
| 351 | entry = dev->fib_list.next; |
| 352 | fibctx = NULL; |
| 353 | |
| 354 | while(entry != &dev->fib_list) { |
| 355 | fibctx = list_entry(entry, struct aac_fib_context, next); |
| 356 | /* |
| 357 | * Extract the fibctx from the input parameters |
| 358 | */ |
| 359 | if (fibctx->unique == (u32)(unsigned long)arg) { |
| 360 | /* We found a winner */ |
| 361 | break; |
| 362 | } |
| 363 | entry = entry->next; |
| 364 | fibctx = NULL; |
| 365 | } |
| 366 | |
| 367 | if (!fibctx) |
| 368 | return 0; /* Already gone */ |
| 369 | |
| 370 | if((fibctx->type != FSAFS_NTC_GET_ADAPTER_FIB_CONTEXT) || |
| 371 | (fibctx->size != sizeof(struct aac_fib_context))) |
| 372 | return -EINVAL; |
| 373 | spin_lock_irqsave(&dev->fib_lock, flags); |
| 374 | status = aac_close_fib_context(dev, fibctx); |
| 375 | spin_unlock_irqrestore(&dev->fib_lock, flags); |
| 376 | return status; |
| 377 | } |
| 378 | |
| 379 | /** |
| 380 | * check_revision - close down user fib context |
| 381 | * @dev: adapter |
| 382 | * @arg: ioctl arguments |
| 383 | * |
| 384 | * This routine returns the driver version. |
| 385 | * Under Linux, there have been no version incompatibilities, so this is |
| 386 | * simple! |
| 387 | */ |
| 388 | |
| 389 | static int check_revision(struct aac_dev *dev, void __user *arg) |
| 390 | { |
| 391 | struct revision response; |
| 392 | |
| 393 | response.compat = 1; |
| 394 | response.version = dev->adapter_info.kernelrev; |
| 395 | response.build = dev->adapter_info.kernelbuild; |
| 396 | |
| 397 | if (copy_to_user(arg, &response, sizeof(response))) |
| 398 | return -EFAULT; |
| 399 | return 0; |
| 400 | } |
| 401 | |
| 402 | /** |
| 403 | * |
| 404 | * aac_send_raw_scb |
| 405 | * |
| 406 | */ |
| 407 | |
| 408 | int aac_send_raw_srb(struct aac_dev* dev, void __user * arg) |
| 409 | { |
| 410 | struct fib* srbfib; |
| 411 | int status; |
| 412 | struct aac_srb *srbcmd; |
| 413 | struct aac_srb __user *user_srb = arg; |
| 414 | struct aac_srb_reply __user *user_reply; |
| 415 | struct aac_srb_reply* reply; |
| 416 | u32 fibsize = 0; |
| 417 | u32 flags = 0; |
| 418 | s32 rcode = 0; |
| 419 | u32 data_dir; |
| 420 | void __user *sg_user[32]; |
| 421 | void *sg_list[32]; |
| 422 | u32 sg_indx = 0; |
| 423 | u32 byte_count = 0; |
| 424 | u32 actual_fibsize = 0; |
| 425 | int i; |
| 426 | |
| 427 | |
| 428 | if (!capable(CAP_SYS_ADMIN)){ |
| 429 | printk(KERN_DEBUG"aacraid: No permission to send raw srb\n"); |
| 430 | return -EPERM; |
| 431 | } |
| 432 | /* |
| 433 | * Allocate and initialize a Fib then setup a BlockWrite command |
| 434 | */ |
| 435 | if (!(srbfib = fib_alloc(dev))) { |
| 436 | return -1; |
| 437 | } |
| 438 | fib_init(srbfib); |
| 439 | |
| 440 | srbcmd = (struct aac_srb*) fib_data(srbfib); |
| 441 | |
| 442 | if(copy_from_user(&fibsize, &user_srb->count,sizeof(u32))){ |
| 443 | printk(KERN_DEBUG"aacraid: Could not copy data size from user\n"); |
| 444 | rcode = -EFAULT; |
| 445 | goto cleanup; |
| 446 | } |
| 447 | |
| 448 | if (fibsize > FIB_DATA_SIZE_IN_BYTES) { |
| 449 | rcode = -EINVAL; |
| 450 | goto cleanup; |
| 451 | } |
| 452 | |
| 453 | if(copy_from_user(srbcmd, user_srb,fibsize)){ |
| 454 | printk(KERN_DEBUG"aacraid: Could not copy srb from user\n"); |
| 455 | rcode = -EFAULT; |
| 456 | goto cleanup; |
| 457 | } |
| 458 | |
| 459 | user_reply = arg+fibsize; |
| 460 | |
| 461 | flags = srbcmd->flags; |
| 462 | // Fix up srb for endian and force some values |
| 463 | srbcmd->function = cpu_to_le32(SRBF_ExecuteScsi); // Force this |
| 464 | srbcmd->channel = cpu_to_le32(srbcmd->channel); |
| 465 | srbcmd->id = cpu_to_le32(srbcmd->id); |
| 466 | srbcmd->lun = cpu_to_le32(srbcmd->lun); |
| 467 | srbcmd->flags = cpu_to_le32(srbcmd->flags); |
| 468 | srbcmd->timeout = cpu_to_le32(srbcmd->timeout); |
| 469 | srbcmd->retry_limit =cpu_to_le32(0); // Obsolete parameter |
| 470 | srbcmd->cdb_size = cpu_to_le32(srbcmd->cdb_size); |
| 471 | |
| 472 | switch (srbcmd->flags & (SRB_DataIn | SRB_DataOut)) { |
| 473 | case SRB_DataOut: |
| 474 | data_dir = DMA_TO_DEVICE; |
| 475 | break; |
| 476 | case (SRB_DataIn | SRB_DataOut): |
| 477 | data_dir = DMA_BIDIRECTIONAL; |
| 478 | break; |
| 479 | case SRB_DataIn: |
| 480 | data_dir = DMA_FROM_DEVICE; |
| 481 | break; |
| 482 | default: |
| 483 | data_dir = DMA_NONE; |
| 484 | } |
| 485 | if (dev->dac_support == 1) { |
| 486 | struct sgmap64* psg = (struct sgmap64*)&srbcmd->sg; |
| 487 | byte_count = 0; |
| 488 | |
| 489 | /* |
| 490 | * This should also catch if user used the 32 bit sgmap |
| 491 | */ |
| 492 | actual_fibsize = sizeof(struct aac_srb) - |
| 493 | sizeof(struct sgentry) + ((srbcmd->sg.count & 0xff) * |
| 494 | sizeof(struct sgentry64)); |
| 495 | if(actual_fibsize != fibsize){ // User made a mistake - should not continue |
| 496 | printk(KERN_DEBUG"aacraid: Bad Size specified in Raw SRB command\n"); |
| 497 | rcode = -EINVAL; |
| 498 | goto cleanup; |
| 499 | } |
| 500 | if ((data_dir == DMA_NONE) && psg->count) { |
| 501 | printk(KERN_DEBUG"aacraid: SG with no direction specified in Raw SRB command\n"); |
| 502 | rcode = -EINVAL; |
| 503 | goto cleanup; |
| 504 | } |
| 505 | |
| 506 | for (i = 0; i < psg->count; i++) { |
| 507 | dma_addr_t addr; |
| 508 | u64 le_addr; |
| 509 | void* p; |
| 510 | p = kmalloc(psg->sg[i].count,GFP_KERNEL|__GFP_DMA); |
| 511 | if(p == 0) { |
| 512 | printk(KERN_DEBUG"aacraid: Could not allocate SG buffer - size = %d buffer number %d of %d\n", |
| 513 | psg->sg[i].count,i,psg->count); |
| 514 | rcode = -ENOMEM; |
| 515 | goto cleanup; |
| 516 | } |
| 517 | sg_user[i] = (void __user *)psg->sg[i].addr; |
| 518 | sg_list[i] = p; // save so we can clean up later |
| 519 | sg_indx = i; |
| 520 | |
| 521 | if( flags & SRB_DataOut ){ |
| 522 | if(copy_from_user(p,sg_user[i],psg->sg[i].count)){ |
| 523 | printk(KERN_DEBUG"aacraid: Could not copy sg data from user\n"); |
| 524 | rcode = -EFAULT; |
| 525 | goto cleanup; |
| 526 | } |
| 527 | } |
| 528 | addr = pci_map_single(dev->pdev, p, psg->sg[i].count, data_dir); |
| 529 | |
| 530 | le_addr = cpu_to_le64(addr); |
| 531 | psg->sg[i].addr[1] = (u32)(le_addr>>32); |
| 532 | psg->sg[i].addr[0] = (u32)(le_addr & 0xffffffff); |
| 533 | psg->sg[i].count = cpu_to_le32(psg->sg[i].count); |
| 534 | byte_count += psg->sg[i].count; |
| 535 | } |
| 536 | |
| 537 | srbcmd->count = cpu_to_le32(byte_count); |
| 538 | status = fib_send(ScsiPortCommand64, srbfib, actual_fibsize, FsaNormal, 1, 1,NULL,NULL); |
| 539 | } else { |
| 540 | struct sgmap* psg = &srbcmd->sg; |
| 541 | byte_count = 0; |
| 542 | |
| 543 | actual_fibsize = sizeof (struct aac_srb) + |
| 544 | (((le32_to_cpu(srbcmd->sg.count) & 0xff) - 1) * |
| 545 | sizeof (struct sgentry)); |
| 546 | if(actual_fibsize != fibsize){ // User made a mistake - should not continue |
| 547 | printk(KERN_DEBUG"aacraid: Bad Size specified in Raw SRB command\n"); |
| 548 | rcode = -EINVAL; |
| 549 | goto cleanup; |
| 550 | } |
| 551 | if ((data_dir == DMA_NONE) && psg->count) { |
| 552 | printk(KERN_DEBUG"aacraid: SG with no direction specified in Raw SRB command\n"); |
| 553 | rcode = -EINVAL; |
| 554 | goto cleanup; |
| 555 | } |
| 556 | for (i = 0; i < psg->count; i++) { |
| 557 | dma_addr_t addr; |
| 558 | void* p; |
| 559 | p = kmalloc(psg->sg[i].count,GFP_KERNEL); |
| 560 | if(p == 0) { |
| 561 | printk(KERN_DEBUG"aacraid: Could not allocate SG buffer - size = %d buffer number %d of %d\n", |
| 562 | psg->sg[i].count,i,psg->count); |
| 563 | rcode = -ENOMEM; |
| 564 | goto cleanup; |
| 565 | } |
| 566 | sg_user[i] = (void __user *)(psg->sg[i].addr); |
| 567 | sg_list[i] = p; // save so we can clean up later |
| 568 | sg_indx = i; |
| 569 | |
| 570 | if( flags & SRB_DataOut ){ |
| 571 | if(copy_from_user(p,sg_user[i],psg->sg[i].count)){ |
| 572 | printk(KERN_DEBUG"aacraid: Could not copy sg data from user\n"); |
| 573 | rcode = -EFAULT; |
| 574 | goto cleanup; |
| 575 | } |
| 576 | } |
| 577 | addr = pci_map_single(dev->pdev, p, psg->sg[i].count, data_dir); |
| 578 | |
| 579 | psg->sg[i].addr = cpu_to_le32(addr); |
| 580 | psg->sg[i].count = cpu_to_le32(psg->sg[i].count); |
| 581 | byte_count += psg->sg[i].count; |
| 582 | } |
| 583 | srbcmd->count = cpu_to_le32(byte_count); |
| 584 | status = fib_send(ScsiPortCommand, srbfib, actual_fibsize, FsaNormal, 1, 1, NULL, NULL); |
| 585 | } |
| 586 | |
| 587 | if (status != 0){ |
| 588 | printk(KERN_DEBUG"aacraid: Could not send raw srb fib to hba\n"); |
| 589 | rcode = -1; |
| 590 | goto cleanup; |
| 591 | } |
| 592 | |
| 593 | if( flags & SRB_DataIn ) { |
| 594 | for(i = 0 ; i <= sg_indx; i++){ |
| 595 | if(copy_to_user(sg_user[i],sg_list[i],le32_to_cpu(srbcmd->sg.sg[i].count))){ |
| 596 | printk(KERN_DEBUG"aacraid: Could not copy sg data to user\n"); |
| 597 | rcode = -EFAULT; |
| 598 | goto cleanup; |
| 599 | |
| 600 | } |
| 601 | } |
| 602 | } |
| 603 | |
| 604 | reply = (struct aac_srb_reply *) fib_data(srbfib); |
| 605 | if(copy_to_user(user_reply,reply,sizeof(struct aac_srb_reply))){ |
| 606 | printk(KERN_DEBUG"aacraid: Could not copy reply to user\n"); |
| 607 | rcode = -EFAULT; |
| 608 | goto cleanup; |
| 609 | } |
| 610 | |
| 611 | cleanup: |
| 612 | for(i=0; i <= sg_indx; i++){ |
| 613 | kfree(sg_list[i]); |
| 614 | } |
| 615 | fib_complete(srbfib); |
| 616 | fib_free(srbfib); |
| 617 | |
| 618 | return rcode; |
| 619 | } |
| 620 | |
| 621 | |
| 622 | struct aac_pci_info { |
| 623 | u32 bus; |
| 624 | u32 slot; |
| 625 | }; |
| 626 | |
| 627 | |
| 628 | int aac_get_pci_info(struct aac_dev* dev, void __user *arg) |
| 629 | { |
| 630 | struct aac_pci_info pci_info; |
| 631 | |
| 632 | pci_info.bus = dev->pdev->bus->number; |
| 633 | pci_info.slot = PCI_SLOT(dev->pdev->devfn); |
| 634 | |
| 635 | if (copy_to_user(arg, &pci_info, sizeof(struct aac_pci_info))) { |
| 636 | printk(KERN_DEBUG "aacraid: Could not copy pci info\n"); |
| 637 | return -EFAULT; |
| 638 | } |
| 639 | return 0; |
| 640 | } |
| 641 | |
| 642 | |
| 643 | int aac_do_ioctl(struct aac_dev * dev, int cmd, void __user *arg) |
| 644 | { |
| 645 | int status; |
| 646 | |
| 647 | /* |
| 648 | * HBA gets first crack |
| 649 | */ |
| 650 | |
| 651 | status = aac_dev_ioctl(dev, cmd, arg); |
| 652 | if(status != -ENOTTY) |
| 653 | return status; |
| 654 | |
| 655 | switch (cmd) { |
| 656 | case FSACTL_MINIPORT_REV_CHECK: |
| 657 | status = check_revision(dev, arg); |
| 658 | break; |
| 659 | case FSACTL_SENDFIB: |
| 660 | status = ioctl_send_fib(dev, arg); |
| 661 | break; |
| 662 | case FSACTL_OPEN_GET_ADAPTER_FIB: |
| 663 | status = open_getadapter_fib(dev, arg); |
| 664 | break; |
| 665 | case FSACTL_GET_NEXT_ADAPTER_FIB: |
| 666 | status = next_getadapter_fib(dev, arg); |
| 667 | break; |
| 668 | case FSACTL_CLOSE_GET_ADAPTER_FIB: |
| 669 | status = close_getadapter_fib(dev, arg); |
| 670 | break; |
| 671 | case FSACTL_SEND_RAW_SRB: |
| 672 | status = aac_send_raw_srb(dev,arg); |
| 673 | break; |
| 674 | case FSACTL_GET_PCI_INFO: |
| 675 | status = aac_get_pci_info(dev,arg); |
| 676 | break; |
| 677 | default: |
| 678 | status = -ENOTTY; |
| 679 | break; |
| 680 | } |
| 681 | return status; |
| 682 | } |
| 683 | |