1 /* 2 * Adaptec AIC79xx device driver for Linux. 3 * 4 * $Id: //depot/aic7xxx/linux/drivers/scsi/aic7xxx/aic79xx_osm.c#171 $ 5 * 6 * -------------------------------------------------------------------------- 7 * Copyright (c) 1994-2000 Justin T. Gibbs. 8 * Copyright (c) 1997-1999 Doug Ledford 9 * Copyright (c) 2000-2003 Adaptec Inc. 10 * All rights reserved. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions, and the following disclaimer, 17 * without modification. 18 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 19 * substantially similar to the "NO WARRANTY" disclaimer below 20 * ("Disclaimer") and any redistribution must be conditioned upon 21 * including a substantially similar Disclaimer requirement for further 22 * binary redistribution. 23 * 3. Neither the names of the above-listed copyright holders nor the names 24 * of any contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * Alternatively, this software may be distributed under the terms of the 28 * GNU General Public License ("GPL") version 2 as published by the Free 29 * Software Foundation. 30 * 31 * NO WARRANTY 32 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 33 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 34 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 35 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 36 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 37 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 38 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 39 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 40 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 41 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 42 * POSSIBILITY OF SUCH DAMAGES. 43 */ 44 45 #include "aic79xx_osm.h" 46 #include "aic79xx_inline.h" 47 #include <scsi/scsicam.h> 48 49 static struct scsi_transport_template *ahd_linux_transport_template = NULL; 50 51 #include <linux/init.h> /* __setup */ 52 #include <linux/mm.h> /* For fetching system memory size */ 53 #include <linux/blkdev.h> /* For block_size() */ 54 #include <linux/delay.h> /* For ssleep/msleep */ 55 #include <linux/device.h> 56 57 /* 58 * Bucket size for counting good commands in between bad ones. 59 */ 60 #define AHD_LINUX_ERR_THRESH 1000 61 62 /* 63 * Set this to the delay in seconds after SCSI bus reset. 64 * Note, we honor this only for the initial bus reset. 65 * The scsi error recovery code performs its own bus settle 66 * delay handling for error recovery actions. 67 */ 68 #ifdef CONFIG_AIC79XX_RESET_DELAY_MS 69 #define AIC79XX_RESET_DELAY CONFIG_AIC79XX_RESET_DELAY_MS 70 #else 71 #define AIC79XX_RESET_DELAY 5000 72 #endif 73 74 /* 75 * To change the default number of tagged transactions allowed per-device, 76 * add a line to the lilo.conf file like: 77 * append="aic79xx=verbose,tag_info:{{32,32,32,32},{32,32,32,32}}" 78 * which will result in the first four devices on the first two 79 * controllers being set to a tagged queue depth of 32. 80 * 81 * The tag_commands is an array of 16 to allow for wide and twin adapters. 82 * Twin adapters will use indexes 0-7 for channel 0, and indexes 8-15 83 * for channel 1. 84 */ 85 typedef struct { 86 uint16_t tag_commands[16]; /* Allow for wide/twin adapters. */ 87 } adapter_tag_info_t; 88 89 /* 90 * Modify this as you see fit for your system. 91 * 92 * 0 tagged queuing disabled 93 * 1 <= n <= 253 n == max tags ever dispatched. 94 * 95 * The driver will throttle the number of commands dispatched to a 96 * device if it returns queue full. For devices with a fixed maximum 97 * queue depth, the driver will eventually determine this depth and 98 * lock it in (a console message is printed to indicate that a lock 99 * has occurred). On some devices, queue full is returned for a temporary 100 * resource shortage. These devices will return queue full at varying 101 * depths. The driver will throttle back when the queue fulls occur and 102 * attempt to slowly increase the depth over time as the device recovers 103 * from the resource shortage. 104 * 105 * In this example, the first line will disable tagged queueing for all 106 * the devices on the first probed aic79xx adapter. 107 * 108 * The second line enables tagged queueing with 4 commands/LUN for IDs 109 * (0, 2-11, 13-15), disables tagged queueing for ID 12, and tells the 110 * driver to attempt to use up to 64 tags for ID 1. 111 * 112 * The third line is the same as the first line. 113 * 114 * The fourth line disables tagged queueing for devices 0 and 3. It 115 * enables tagged queueing for the other IDs, with 16 commands/LUN 116 * for IDs 1 and 4, 127 commands/LUN for ID 8, and 4 commands/LUN for 117 * IDs 2, 5-7, and 9-15. 118 */ 119 120 /* 121 * NOTE: The below structure is for reference only, the actual structure 122 * to modify in order to change things is just below this comment block. 123 adapter_tag_info_t aic79xx_tag_info[] = 124 { 125 {{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}}, 126 {{4, 64, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 0, 4, 4, 4}}, 127 {{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}}, 128 {{0, 16, 4, 0, 16, 4, 4, 4, 127, 4, 4, 4, 4, 4, 4, 4}} 129 }; 130 */ 131 132 #ifdef CONFIG_AIC79XX_CMDS_PER_DEVICE 133 #define AIC79XX_CMDS_PER_DEVICE CONFIG_AIC79XX_CMDS_PER_DEVICE 134 #else 135 #define AIC79XX_CMDS_PER_DEVICE AHD_MAX_QUEUE 136 #endif 137 138 #define AIC79XX_CONFIGED_TAG_COMMANDS { \ 139 AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE, \ 140 AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE, \ 141 AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE, \ 142 AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE, \ 143 AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE, \ 144 AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE, \ 145 AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE, \ 146 AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE \ 147 } 148 149 /* 150 * By default, use the number of commands specified by 151 * the users kernel configuration. 152 */ 153 static adapter_tag_info_t aic79xx_tag_info[] = 154 { 155 {AIC79XX_CONFIGED_TAG_COMMANDS}, 156 {AIC79XX_CONFIGED_TAG_COMMANDS}, 157 {AIC79XX_CONFIGED_TAG_COMMANDS}, 158 {AIC79XX_CONFIGED_TAG_COMMANDS}, 159 {AIC79XX_CONFIGED_TAG_COMMANDS}, 160 {AIC79XX_CONFIGED_TAG_COMMANDS}, 161 {AIC79XX_CONFIGED_TAG_COMMANDS}, 162 {AIC79XX_CONFIGED_TAG_COMMANDS}, 163 {AIC79XX_CONFIGED_TAG_COMMANDS}, 164 {AIC79XX_CONFIGED_TAG_COMMANDS}, 165 {AIC79XX_CONFIGED_TAG_COMMANDS}, 166 {AIC79XX_CONFIGED_TAG_COMMANDS}, 167 {AIC79XX_CONFIGED_TAG_COMMANDS}, 168 {AIC79XX_CONFIGED_TAG_COMMANDS}, 169 {AIC79XX_CONFIGED_TAG_COMMANDS}, 170 {AIC79XX_CONFIGED_TAG_COMMANDS} 171 }; 172 173 /* 174 * The I/O cell on the chip is very configurable in respect to its analog 175 * characteristics. Set the defaults here; they can be overriden with 176 * the proper insmod parameters. 177 */ 178 struct ahd_linux_iocell_opts 179 { 180 uint8_t precomp; 181 uint8_t slewrate; 182 uint8_t amplitude; 183 }; 184 #define AIC79XX_DEFAULT_PRECOMP 0xFF 185 #define AIC79XX_DEFAULT_SLEWRATE 0xFF 186 #define AIC79XX_DEFAULT_AMPLITUDE 0xFF 187 #define AIC79XX_DEFAULT_IOOPTS \ 188 { \ 189 AIC79XX_DEFAULT_PRECOMP, \ 190 AIC79XX_DEFAULT_SLEWRATE, \ 191 AIC79XX_DEFAULT_AMPLITUDE \ 192 } 193 #define AIC79XX_PRECOMP_INDEX 0 194 #define AIC79XX_SLEWRATE_INDEX 1 195 #define AIC79XX_AMPLITUDE_INDEX 2 196 static struct ahd_linux_iocell_opts aic79xx_iocell_info[] = 197 { 198 AIC79XX_DEFAULT_IOOPTS, 199 AIC79XX_DEFAULT_IOOPTS, 200 AIC79XX_DEFAULT_IOOPTS, 201 AIC79XX_DEFAULT_IOOPTS, 202 AIC79XX_DEFAULT_IOOPTS, 203 AIC79XX_DEFAULT_IOOPTS, 204 AIC79XX_DEFAULT_IOOPTS, 205 AIC79XX_DEFAULT_IOOPTS, 206 AIC79XX_DEFAULT_IOOPTS, 207 AIC79XX_DEFAULT_IOOPTS, 208 AIC79XX_DEFAULT_IOOPTS, 209 AIC79XX_DEFAULT_IOOPTS, 210 AIC79XX_DEFAULT_IOOPTS, 211 AIC79XX_DEFAULT_IOOPTS, 212 AIC79XX_DEFAULT_IOOPTS, 213 AIC79XX_DEFAULT_IOOPTS 214 }; 215 216 /* 217 * There should be a specific return value for this in scsi.h, but 218 * it seems that most drivers ignore it. 219 */ 220 #define DID_UNDERFLOW DID_ERROR 221 222 void 223 ahd_print_path(struct ahd_softc *ahd, struct scb *scb) 224 { 225 printk("(scsi%d:%c:%d:%d): ", 226 ahd->platform_data->host->host_no, 227 scb != NULL ? SCB_GET_CHANNEL(ahd, scb) : 'X', 228 scb != NULL ? SCB_GET_TARGET(ahd, scb) : -1, 229 scb != NULL ? SCB_GET_LUN(scb) : -1); 230 } 231 232 /* 233 * XXX - these options apply unilaterally to _all_ adapters 234 * cards in the system. This should be fixed. Exceptions to this 235 * rule are noted in the comments. 236 */ 237 238 /* 239 * Skip the scsi bus reset. Non 0 make us skip the reset at startup. This 240 * has no effect on any later resets that might occur due to things like 241 * SCSI bus timeouts. 242 */ 243 static uint32_t aic79xx_no_reset; 244 245 /* 246 * Should we force EXTENDED translation on a controller. 247 * 0 == Use whatever is in the SEEPROM or default to off 248 * 1 == Use whatever is in the SEEPROM or default to on 249 */ 250 static uint32_t aic79xx_extended; 251 252 /* 253 * PCI bus parity checking of the Adaptec controllers. This is somewhat 254 * dubious at best. To my knowledge, this option has never actually 255 * solved a PCI parity problem, but on certain machines with broken PCI 256 * chipset configurations, it can generate tons of false error messages. 257 * It's included in the driver for completeness. 258 * 0 = Shut off PCI parity check 259 * non-0 = Enable PCI parity check 260 * 261 * NOTE: you can't actually pass -1 on the lilo prompt. So, to set this 262 * variable to -1 you would actually want to simply pass the variable 263 * name without a number. That will invert the 0 which will result in 264 * -1. 265 */ 266 static uint32_t aic79xx_pci_parity = ~0; 267 268 /* 269 * There are lots of broken chipsets in the world. Some of them will 270 * violate the PCI spec when we issue byte sized memory writes to our 271 * controller. I/O mapped register access, if allowed by the given 272 * platform, will work in almost all cases. 273 */ 274 uint32_t aic79xx_allow_memio = ~0; 275 276 /* 277 * So that we can set how long each device is given as a selection timeout. 278 * The table of values goes like this: 279 * 0 - 256ms 280 * 1 - 128ms 281 * 2 - 64ms 282 * 3 - 32ms 283 * We default to 256ms because some older devices need a longer time 284 * to respond to initial selection. 285 */ 286 static uint32_t aic79xx_seltime; 287 288 /* 289 * Certain devices do not perform any aging on commands. Should the 290 * device be saturated by commands in one portion of the disk, it is 291 * possible for transactions on far away sectors to never be serviced. 292 * To handle these devices, we can periodically send an ordered tag to 293 * force all outstanding transactions to be serviced prior to a new 294 * transaction. 295 */ 296 static uint32_t aic79xx_periodic_otag; 297 298 /* Some storage boxes are using an LSI chip which has a bug making it 299 * impossible to use aic79xx Rev B chip in 320 speeds. The following 300 * storage boxes have been reported to be buggy: 301 * EonStor 3U 16-Bay: U16U-G3A3 302 * EonStor 2U 12-Bay: U12U-G3A3 303 * SentinelRAID: 2500F R5 / R6 304 * SentinelRAID: 2500F R1 305 * SentinelRAID: 2500F/1500F 306 * SentinelRAID: 150F 307 * 308 * To get around this LSI bug, you can set your board to 160 mode 309 * or you can enable the SLOWCRC bit. 310 */ 311 uint32_t aic79xx_slowcrc; 312 313 /* 314 * Module information and settable options. 315 */ 316 static char *aic79xx = NULL; 317 318 MODULE_AUTHOR("Maintainer: Justin T. Gibbs <gibbs@scsiguy.com>"); 319 MODULE_DESCRIPTION("Adaptec Aic790X U320 SCSI Host Bus Adapter driver"); 320 MODULE_LICENSE("Dual BSD/GPL"); 321 MODULE_VERSION(AIC79XX_DRIVER_VERSION); 322 module_param(aic79xx, charp, 0444); 323 MODULE_PARM_DESC(aic79xx, 324 "period-delimited options string:\n" 325 " verbose Enable verbose/diagnostic logging\n" 326 " allow_memio Allow device registers to be memory mapped\n" 327 " debug Bitmask of debug values to enable\n" 328 " no_reset Supress initial bus resets\n" 329 " extended Enable extended geometry on all controllers\n" 330 " periodic_otag Send an ordered tagged transaction\n" 331 " periodically to prevent tag starvation.\n" 332 " This may be required by some older disk\n" 333 " or drives/RAID arrays.\n" 334 " tag_info:<tag_str> Set per-target tag depth\n" 335 " global_tag_depth:<int> Global tag depth for all targets on all buses\n" 336 " slewrate:<slewrate_list>Set the signal slew rate (0-15).\n" 337 " precomp:<pcomp_list> Set the signal precompensation (0-7).\n" 338 " amplitude:<int> Set the signal amplitude (0-7).\n" 339 " seltime:<int> Selection Timeout:\n" 340 " (0/256ms,1/128ms,2/64ms,3/32ms)\n" 341 " slowcrc Turn on the SLOWCRC bit (Rev B only)\n" 342 "\n" 343 " Sample /etc/modprobe.conf line:\n" 344 " Enable verbose logging\n" 345 " Set tag depth on Controller 2/Target 2 to 10 tags\n" 346 " Shorten the selection timeout to 128ms\n" 347 "\n" 348 " options aic79xx 'aic79xx=verbose.tag_info:{{}.{}.{..10}}.seltime:1'\n" 349 ); 350 351 static void ahd_linux_handle_scsi_status(struct ahd_softc *, 352 struct scsi_device *, 353 struct scb *); 354 static void ahd_linux_queue_cmd_complete(struct ahd_softc *ahd, 355 struct scsi_cmnd *cmd); 356 static int ahd_linux_queue_abort_cmd(struct scsi_cmnd *cmd); 357 static void ahd_linux_initialize_scsi_bus(struct ahd_softc *ahd); 358 static u_int ahd_linux_user_tagdepth(struct ahd_softc *ahd, 359 struct ahd_devinfo *devinfo); 360 static void ahd_linux_device_queue_depth(struct scsi_device *); 361 static int ahd_linux_run_command(struct ahd_softc*, 362 struct ahd_linux_device *, 363 struct scsi_cmnd *); 364 static void ahd_linux_setup_tag_info_global(char *p); 365 static int aic79xx_setup(char *c); 366 367 static int ahd_linux_unit; 368 369 370 /****************************** Inlines ***************************************/ 371 static __inline void ahd_linux_unmap_scb(struct ahd_softc*, struct scb*); 372 373 static __inline void 374 ahd_linux_unmap_scb(struct ahd_softc *ahd, struct scb *scb) 375 { 376 struct scsi_cmnd *cmd; 377 int direction; 378 379 cmd = scb->io_ctx; 380 direction = cmd->sc_data_direction; 381 ahd_sync_sglist(ahd, scb, BUS_DMASYNC_POSTWRITE); 382 if (cmd->use_sg != 0) { 383 struct scatterlist *sg; 384 385 sg = (struct scatterlist *)cmd->request_buffer; 386 pci_unmap_sg(ahd->dev_softc, sg, cmd->use_sg, direction); 387 } else if (cmd->request_bufflen != 0) { 388 pci_unmap_single(ahd->dev_softc, 389 scb->platform_data->buf_busaddr, 390 cmd->request_bufflen, direction); 391 } 392 } 393 394 /******************************** Macros **************************************/ 395 #define BUILD_SCSIID(ahd, cmd) \ 396 (((scmd_id(cmd) << TID_SHIFT) & TID) | (ahd)->our_id) 397 398 /* 399 * Return a string describing the driver. 400 */ 401 static const char * 402 ahd_linux_info(struct Scsi_Host *host) 403 { 404 static char buffer[512]; 405 char ahd_info[256]; 406 char *bp; 407 struct ahd_softc *ahd; 408 409 bp = &buffer[0]; 410 ahd = *(struct ahd_softc **)host->hostdata; 411 memset(bp, 0, sizeof(buffer)); 412 strcpy(bp, "Adaptec AIC79XX PCI-X SCSI HBA DRIVER, Rev "); 413 strcat(bp, AIC79XX_DRIVER_VERSION); 414 strcat(bp, "\n"); 415 strcat(bp, " <"); 416 strcat(bp, ahd->description); 417 strcat(bp, ">\n"); 418 strcat(bp, " "); 419 ahd_controller_info(ahd, ahd_info); 420 strcat(bp, ahd_info); 421 422 return (bp); 423 } 424 425 /* 426 * Queue an SCB to the controller. 427 */ 428 static int 429 ahd_linux_queue(struct scsi_cmnd * cmd, void (*scsi_done) (struct scsi_cmnd *)) 430 { 431 struct ahd_softc *ahd; 432 struct ahd_linux_device *dev = scsi_transport_device_data(cmd->device); 433 int rtn = SCSI_MLQUEUE_HOST_BUSY; 434 435 ahd = *(struct ahd_softc **)cmd->device->host->hostdata; 436 437 cmd->scsi_done = scsi_done; 438 cmd->result = CAM_REQ_INPROG << 16; 439 rtn = ahd_linux_run_command(ahd, dev, cmd); 440 441 return rtn; 442 } 443 444 static inline struct scsi_target ** 445 ahd_linux_target_in_softc(struct scsi_target *starget) 446 { 447 struct ahd_softc *ahd = 448 *((struct ahd_softc **)dev_to_shost(&starget->dev)->hostdata); 449 unsigned int target_offset; 450 451 target_offset = starget->id; 452 if (starget->channel != 0) 453 target_offset += 8; 454 455 return &ahd->platform_data->starget[target_offset]; 456 } 457 458 static int 459 ahd_linux_target_alloc(struct scsi_target *starget) 460 { 461 struct ahd_softc *ahd = 462 *((struct ahd_softc **)dev_to_shost(&starget->dev)->hostdata); 463 struct seeprom_config *sc = ahd->seep_config; 464 unsigned long flags; 465 struct scsi_target **ahd_targp = ahd_linux_target_in_softc(starget); 466 struct ahd_devinfo devinfo; 467 struct ahd_initiator_tinfo *tinfo; 468 struct ahd_tmode_tstate *tstate; 469 char channel = starget->channel + 'A'; 470 471 ahd_lock(ahd, &flags); 472 473 BUG_ON(*ahd_targp != NULL); 474 475 *ahd_targp = starget; 476 477 if (sc) { 478 int flags = sc->device_flags[starget->id]; 479 480 tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id, 481 starget->id, &tstate); 482 483 if ((flags & CFPACKETIZED) == 0) { 484 /* Do not negotiate packetized transfers */ 485 spi_rd_strm(starget) = 0; 486 spi_pcomp_en(starget) = 0; 487 spi_rti(starget) = 0; 488 spi_wr_flow(starget) = 0; 489 spi_hold_mcs(starget) = 0; 490 } else { 491 if ((ahd->features & AHD_RTI) == 0) 492 spi_rti(starget) = 0; 493 } 494 495 if ((flags & CFQAS) == 0) 496 spi_qas(starget) = 0; 497 498 /* Transinfo values have been set to BIOS settings */ 499 spi_max_width(starget) = (flags & CFWIDEB) ? 1 : 0; 500 spi_min_period(starget) = tinfo->user.period; 501 spi_max_offset(starget) = tinfo->user.offset; 502 } 503 504 tinfo = ahd_fetch_transinfo(ahd, channel, ahd->our_id, 505 starget->id, &tstate); 506 ahd_compile_devinfo(&devinfo, ahd->our_id, starget->id, 507 CAM_LUN_WILDCARD, channel, 508 ROLE_INITIATOR); 509 ahd_set_syncrate(ahd, &devinfo, 0, 0, 0, 510 AHD_TRANS_GOAL, /*paused*/FALSE); 511 ahd_set_width(ahd, &devinfo, MSG_EXT_WDTR_BUS_8_BIT, 512 AHD_TRANS_GOAL, /*paused*/FALSE); 513 ahd_unlock(ahd, &flags); 514 515 return 0; 516 } 517 518 static void 519 ahd_linux_target_destroy(struct scsi_target *starget) 520 { 521 struct scsi_target **ahd_targp = ahd_linux_target_in_softc(starget); 522 523 *ahd_targp = NULL; 524 } 525 526 static int 527 ahd_linux_slave_alloc(struct scsi_device *sdev) 528 { 529 struct ahd_softc *ahd = 530 *((struct ahd_softc **)sdev->host->hostdata); 531 struct ahd_linux_device *dev; 532 533 if (bootverbose) 534 printf("%s: Slave Alloc %d\n", ahd_name(ahd), sdev->id); 535 536 dev = scsi_transport_device_data(sdev); 537 memset(dev, 0, sizeof(*dev)); 538 539 /* 540 * We start out life using untagged 541 * transactions of which we allow one. 542 */ 543 dev->openings = 1; 544 545 /* 546 * Set maxtags to 0. This will be changed if we 547 * later determine that we are dealing with 548 * a tagged queuing capable device. 549 */ 550 dev->maxtags = 0; 551 552 return (0); 553 } 554 555 static int 556 ahd_linux_slave_configure(struct scsi_device *sdev) 557 { 558 struct ahd_softc *ahd; 559 560 ahd = *((struct ahd_softc **)sdev->host->hostdata); 561 if (bootverbose) 562 sdev_printk(KERN_INFO, sdev, "Slave Configure\n"); 563 564 ahd_linux_device_queue_depth(sdev); 565 566 /* Initial Domain Validation */ 567 if (!spi_initial_dv(sdev->sdev_target)) 568 spi_dv_device(sdev); 569 570 return 0; 571 } 572 573 #if defined(__i386__) 574 /* 575 * Return the disk geometry for the given SCSI device. 576 */ 577 static int 578 ahd_linux_biosparam(struct scsi_device *sdev, struct block_device *bdev, 579 sector_t capacity, int geom[]) 580 { 581 uint8_t *bh; 582 int heads; 583 int sectors; 584 int cylinders; 585 int ret; 586 int extended; 587 struct ahd_softc *ahd; 588 589 ahd = *((struct ahd_softc **)sdev->host->hostdata); 590 591 bh = scsi_bios_ptable(bdev); 592 if (bh) { 593 ret = scsi_partsize(bh, capacity, 594 &geom[2], &geom[0], &geom[1]); 595 kfree(bh); 596 if (ret != -1) 597 return (ret); 598 } 599 heads = 64; 600 sectors = 32; 601 cylinders = aic_sector_div(capacity, heads, sectors); 602 603 if (aic79xx_extended != 0) 604 extended = 1; 605 else 606 extended = (ahd->flags & AHD_EXTENDED_TRANS_A) != 0; 607 if (extended && cylinders >= 1024) { 608 heads = 255; 609 sectors = 63; 610 cylinders = aic_sector_div(capacity, heads, sectors); 611 } 612 geom[0] = heads; 613 geom[1] = sectors; 614 geom[2] = cylinders; 615 return (0); 616 } 617 #endif 618 619 /* 620 * Abort the current SCSI command(s). 621 */ 622 static int 623 ahd_linux_abort(struct scsi_cmnd *cmd) 624 { 625 int error; 626 627 error = ahd_linux_queue_abort_cmd(cmd); 628 629 return error; 630 } 631 632 /* 633 * Attempt to send a target reset message to the device that timed out. 634 */ 635 static int 636 ahd_linux_dev_reset(struct scsi_cmnd *cmd) 637 { 638 struct ahd_softc *ahd; 639 struct ahd_linux_device *dev; 640 struct scb *reset_scb; 641 u_int cdb_byte; 642 int retval = SUCCESS; 643 int paused; 644 int wait; 645 struct ahd_initiator_tinfo *tinfo; 646 struct ahd_tmode_tstate *tstate; 647 unsigned long flags; 648 DECLARE_COMPLETION_ONSTACK(done); 649 650 reset_scb = NULL; 651 paused = FALSE; 652 wait = FALSE; 653 ahd = *(struct ahd_softc **)cmd->device->host->hostdata; 654 655 scmd_printk(KERN_INFO, cmd, 656 "Attempting to queue a TARGET RESET message:"); 657 658 printf("CDB:"); 659 for (cdb_byte = 0; cdb_byte < cmd->cmd_len; cdb_byte++) 660 printf(" 0x%x", cmd->cmnd[cdb_byte]); 661 printf("\n"); 662 663 /* 664 * Determine if we currently own this command. 665 */ 666 dev = scsi_transport_device_data(cmd->device); 667 668 if (dev == NULL) { 669 /* 670 * No target device for this command exists, 671 * so we must not still own the command. 672 */ 673 scmd_printk(KERN_INFO, cmd, "Is not an active device\n"); 674 return SUCCESS; 675 } 676 677 /* 678 * Generate us a new SCB 679 */ 680 reset_scb = ahd_get_scb(ahd, AHD_NEVER_COL_IDX); 681 if (!reset_scb) { 682 scmd_printk(KERN_INFO, cmd, "No SCB available\n"); 683 return FAILED; 684 } 685 686 tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id, 687 cmd->device->id, &tstate); 688 reset_scb->io_ctx = cmd; 689 reset_scb->platform_data->dev = dev; 690 reset_scb->sg_count = 0; 691 ahd_set_residual(reset_scb, 0); 692 ahd_set_sense_residual(reset_scb, 0); 693 reset_scb->platform_data->xfer_len = 0; 694 reset_scb->hscb->control = 0; 695 reset_scb->hscb->scsiid = BUILD_SCSIID(ahd,cmd); 696 reset_scb->hscb->lun = cmd->device->lun; 697 reset_scb->hscb->cdb_len = 0; 698 reset_scb->hscb->task_management = SIU_TASKMGMT_LUN_RESET; 699 reset_scb->flags |= SCB_DEVICE_RESET|SCB_RECOVERY_SCB|SCB_ACTIVE; 700 if ((tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0) { 701 reset_scb->flags |= SCB_PACKETIZED; 702 } else { 703 reset_scb->hscb->control |= MK_MESSAGE; 704 } 705 dev->openings--; 706 dev->active++; 707 dev->commands_issued++; 708 709 ahd_lock(ahd, &flags); 710 711 LIST_INSERT_HEAD(&ahd->pending_scbs, reset_scb, pending_links); 712 ahd_queue_scb(ahd, reset_scb); 713 714 ahd->platform_data->eh_done = &done; 715 ahd_unlock(ahd, &flags); 716 717 printf("%s: Device reset code sleeping\n", ahd_name(ahd)); 718 if (!wait_for_completion_timeout(&done, 5 * HZ)) { 719 ahd_lock(ahd, &flags); 720 ahd->platform_data->eh_done = NULL; 721 ahd_unlock(ahd, &flags); 722 printf("%s: Device reset timer expired (active %d)\n", 723 ahd_name(ahd), dev->active); 724 retval = FAILED; 725 } 726 printf("%s: Device reset returning 0x%x\n", ahd_name(ahd), retval); 727 728 return (retval); 729 } 730 731 /* 732 * Reset the SCSI bus. 733 */ 734 static int 735 ahd_linux_bus_reset(struct scsi_cmnd *cmd) 736 { 737 struct ahd_softc *ahd; 738 int found; 739 unsigned long flags; 740 741 ahd = *(struct ahd_softc **)cmd->device->host->hostdata; 742 #ifdef AHD_DEBUG 743 if ((ahd_debug & AHD_SHOW_RECOVERY) != 0) 744 printf("%s: Bus reset called for cmd %p\n", 745 ahd_name(ahd), cmd); 746 #endif 747 ahd_lock(ahd, &flags); 748 749 found = ahd_reset_channel(ahd, scmd_channel(cmd) + 'A', 750 /*initiate reset*/TRUE); 751 ahd_unlock(ahd, &flags); 752 753 if (bootverbose) 754 printf("%s: SCSI bus reset delivered. " 755 "%d SCBs aborted.\n", ahd_name(ahd), found); 756 757 return (SUCCESS); 758 } 759 760 struct scsi_host_template aic79xx_driver_template = { 761 .module = THIS_MODULE, 762 .name = "aic79xx", 763 .proc_name = "aic79xx", 764 .proc_info = ahd_linux_proc_info, 765 .info = ahd_linux_info, 766 .queuecommand = ahd_linux_queue, 767 .eh_abort_handler = ahd_linux_abort, 768 .eh_device_reset_handler = ahd_linux_dev_reset, 769 .eh_bus_reset_handler = ahd_linux_bus_reset, 770 #if defined(__i386__) 771 .bios_param = ahd_linux_biosparam, 772 #endif 773 .can_queue = AHD_MAX_QUEUE, 774 .this_id = -1, 775 .max_sectors = 8192, 776 .cmd_per_lun = 2, 777 .use_clustering = ENABLE_CLUSTERING, 778 .slave_alloc = ahd_linux_slave_alloc, 779 .slave_configure = ahd_linux_slave_configure, 780 .target_alloc = ahd_linux_target_alloc, 781 .target_destroy = ahd_linux_target_destroy, 782 }; 783 784 /******************************** Bus DMA *************************************/ 785 int 786 ahd_dma_tag_create(struct ahd_softc *ahd, bus_dma_tag_t parent, 787 bus_size_t alignment, bus_size_t boundary, 788 dma_addr_t lowaddr, dma_addr_t highaddr, 789 bus_dma_filter_t *filter, void *filterarg, 790 bus_size_t maxsize, int nsegments, 791 bus_size_t maxsegsz, int flags, bus_dma_tag_t *ret_tag) 792 { 793 bus_dma_tag_t dmat; 794 795 dmat = malloc(sizeof(*dmat), M_DEVBUF, M_NOWAIT); 796 if (dmat == NULL) 797 return (ENOMEM); 798 799 /* 800 * Linux is very simplistic about DMA memory. For now don't 801 * maintain all specification information. Once Linux supplies 802 * better facilities for doing these operations, or the 803 * needs of this particular driver change, we might need to do 804 * more here. 805 */ 806 dmat->alignment = alignment; 807 dmat->boundary = boundary; 808 dmat->maxsize = maxsize; 809 *ret_tag = dmat; 810 return (0); 811 } 812 813 void 814 ahd_dma_tag_destroy(struct ahd_softc *ahd, bus_dma_tag_t dmat) 815 { 816 free(dmat, M_DEVBUF); 817 } 818 819 int 820 ahd_dmamem_alloc(struct ahd_softc *ahd, bus_dma_tag_t dmat, void** vaddr, 821 int flags, bus_dmamap_t *mapp) 822 { 823 *vaddr = pci_alloc_consistent(ahd->dev_softc, 824 dmat->maxsize, mapp); 825 if (*vaddr == NULL) 826 return (ENOMEM); 827 return(0); 828 } 829 830 void 831 ahd_dmamem_free(struct ahd_softc *ahd, bus_dma_tag_t dmat, 832 void* vaddr, bus_dmamap_t map) 833 { 834 pci_free_consistent(ahd->dev_softc, dmat->maxsize, 835 vaddr, map); 836 } 837 838 int 839 ahd_dmamap_load(struct ahd_softc *ahd, bus_dma_tag_t dmat, bus_dmamap_t map, 840 void *buf, bus_size_t buflen, bus_dmamap_callback_t *cb, 841 void *cb_arg, int flags) 842 { 843 /* 844 * Assume for now that this will only be used during 845 * initialization and not for per-transaction buffer mapping. 846 */ 847 bus_dma_segment_t stack_sg; 848 849 stack_sg.ds_addr = map; 850 stack_sg.ds_len = dmat->maxsize; 851 cb(cb_arg, &stack_sg, /*nseg*/1, /*error*/0); 852 return (0); 853 } 854 855 void 856 ahd_dmamap_destroy(struct ahd_softc *ahd, bus_dma_tag_t dmat, bus_dmamap_t map) 857 { 858 } 859 860 int 861 ahd_dmamap_unload(struct ahd_softc *ahd, bus_dma_tag_t dmat, bus_dmamap_t map) 862 { 863 /* Nothing to do */ 864 return (0); 865 } 866 867 /********************* Platform Dependent Functions ***************************/ 868 static void 869 ahd_linux_setup_iocell_info(u_long index, int instance, int targ, int32_t value) 870 { 871 872 if ((instance >= 0) 873 && (instance < ARRAY_SIZE(aic79xx_iocell_info))) { 874 uint8_t *iocell_info; 875 876 iocell_info = (uint8_t*)&aic79xx_iocell_info[instance]; 877 iocell_info[index] = value & 0xFFFF; 878 if (bootverbose) 879 printf("iocell[%d:%ld] = %d\n", instance, index, value); 880 } 881 } 882 883 static void 884 ahd_linux_setup_tag_info_global(char *p) 885 { 886 int tags, i, j; 887 888 tags = simple_strtoul(p + 1, NULL, 0) & 0xff; 889 printf("Setting Global Tags= %d\n", tags); 890 891 for (i = 0; i < ARRAY_SIZE(aic79xx_tag_info); i++) { 892 for (j = 0; j < AHD_NUM_TARGETS; j++) { 893 aic79xx_tag_info[i].tag_commands[j] = tags; 894 } 895 } 896 } 897 898 static void 899 ahd_linux_setup_tag_info(u_long arg, int instance, int targ, int32_t value) 900 { 901 902 if ((instance >= 0) && (targ >= 0) 903 && (instance < ARRAY_SIZE(aic79xx_tag_info)) 904 && (targ < AHD_NUM_TARGETS)) { 905 aic79xx_tag_info[instance].tag_commands[targ] = value & 0x1FF; 906 if (bootverbose) 907 printf("tag_info[%d:%d] = %d\n", instance, targ, value); 908 } 909 } 910 911 static char * 912 ahd_parse_brace_option(char *opt_name, char *opt_arg, char *end, int depth, 913 void (*callback)(u_long, int, int, int32_t), 914 u_long callback_arg) 915 { 916 char *tok_end; 917 char *tok_end2; 918 int i; 919 int instance; 920 int targ; 921 int done; 922 char tok_list[] = {'.', ',', '{', '}', '\0'}; 923 924 /* All options use a ':' name/arg separator */ 925 if (*opt_arg != ':') 926 return (opt_arg); 927 opt_arg++; 928 instance = -1; 929 targ = -1; 930 done = FALSE; 931 /* 932 * Restore separator that may be in 933 * the middle of our option argument. 934 */ 935 tok_end = strchr(opt_arg, '\0'); 936 if (tok_end < end) 937 *tok_end = ','; 938 while (!done) { 939 switch (*opt_arg) { 940 case '{': 941 if (instance == -1) { 942 instance = 0; 943 } else { 944 if (depth > 1) { 945 if (targ == -1) 946 targ = 0; 947 } else { 948 printf("Malformed Option %s\n", 949 opt_name); 950 done = TRUE; 951 } 952 } 953 opt_arg++; 954 break; 955 case '}': 956 if (targ != -1) 957 targ = -1; 958 else if (instance != -1) 959 instance = -1; 960 opt_arg++; 961 break; 962 case ',': 963 case '.': 964 if (instance == -1) 965 done = TRUE; 966 else if (targ >= 0) 967 targ++; 968 else if (instance >= 0) 969 instance++; 970 opt_arg++; 971 break; 972 case '\0': 973 done = TRUE; 974 break; 975 default: 976 tok_end = end; 977 for (i = 0; tok_list[i]; i++) { 978 tok_end2 = strchr(opt_arg, tok_list[i]); 979 if ((tok_end2) && (tok_end2 < tok_end)) 980 tok_end = tok_end2; 981 } 982 callback(callback_arg, instance, targ, 983 simple_strtol(opt_arg, NULL, 0)); 984 opt_arg = tok_end; 985 break; 986 } 987 } 988 return (opt_arg); 989 } 990 991 /* 992 * Handle Linux boot parameters. This routine allows for assigning a value 993 * to a parameter with a ':' between the parameter and the value. 994 * ie. aic79xx=stpwlev:1,extended 995 */ 996 static int 997 aic79xx_setup(char *s) 998 { 999 int i, n; 1000 char *p; 1001 char *end; 1002 1003 static struct { 1004 const char *name; 1005 uint32_t *flag; 1006 } options[] = { 1007 { "extended", &aic79xx_extended }, 1008 { "no_reset", &aic79xx_no_reset }, 1009 { "verbose", &aic79xx_verbose }, 1010 { "allow_memio", &aic79xx_allow_memio}, 1011 #ifdef AHD_DEBUG 1012 { "debug", &ahd_debug }, 1013 #endif 1014 { "periodic_otag", &aic79xx_periodic_otag }, 1015 { "pci_parity", &aic79xx_pci_parity }, 1016 { "seltime", &aic79xx_seltime }, 1017 { "tag_info", NULL }, 1018 { "global_tag_depth", NULL}, 1019 { "slewrate", NULL }, 1020 { "precomp", NULL }, 1021 { "amplitude", NULL }, 1022 { "slowcrc", &aic79xx_slowcrc }, 1023 }; 1024 1025 end = strchr(s, '\0'); 1026 1027 /* 1028 * XXX ia64 gcc isn't smart enough to know that ARRAY_SIZE 1029 * will never be 0 in this case. 1030 */ 1031 n = 0; 1032 1033 while ((p = strsep(&s, ",.")) != NULL) { 1034 if (*p == '\0') 1035 continue; 1036 for (i = 0; i < ARRAY_SIZE(options); i++) { 1037 1038 n = strlen(options[i].name); 1039 if (strncmp(options[i].name, p, n) == 0) 1040 break; 1041 } 1042 if (i == ARRAY_SIZE(options)) 1043 continue; 1044 1045 if (strncmp(p, "global_tag_depth", n) == 0) { 1046 ahd_linux_setup_tag_info_global(p + n); 1047 } else if (strncmp(p, "tag_info", n) == 0) { 1048 s = ahd_parse_brace_option("tag_info", p + n, end, 1049 2, ahd_linux_setup_tag_info, 0); 1050 } else if (strncmp(p, "slewrate", n) == 0) { 1051 s = ahd_parse_brace_option("slewrate", 1052 p + n, end, 1, ahd_linux_setup_iocell_info, 1053 AIC79XX_SLEWRATE_INDEX); 1054 } else if (strncmp(p, "precomp", n) == 0) { 1055 s = ahd_parse_brace_option("precomp", 1056 p + n, end, 1, ahd_linux_setup_iocell_info, 1057 AIC79XX_PRECOMP_INDEX); 1058 } else if (strncmp(p, "amplitude", n) == 0) { 1059 s = ahd_parse_brace_option("amplitude", 1060 p + n, end, 1, ahd_linux_setup_iocell_info, 1061 AIC79XX_AMPLITUDE_INDEX); 1062 } else if (p[n] == ':') { 1063 *(options[i].flag) = simple_strtoul(p + n + 1, NULL, 0); 1064 } else if (!strncmp(p, "verbose", n)) { 1065 *(options[i].flag) = 1; 1066 } else { 1067 *(options[i].flag) ^= 0xFFFFFFFF; 1068 } 1069 } 1070 return 1; 1071 } 1072 1073 __setup("aic79xx=", aic79xx_setup); 1074 1075 uint32_t aic79xx_verbose; 1076 1077 int 1078 ahd_linux_register_host(struct ahd_softc *ahd, struct scsi_host_template *template) 1079 { 1080 char buf[80]; 1081 struct Scsi_Host *host; 1082 char *new_name; 1083 u_long s; 1084 int retval; 1085 1086 template->name = ahd->description; 1087 host = scsi_host_alloc(template, sizeof(struct ahd_softc *)); 1088 if (host == NULL) 1089 return (ENOMEM); 1090 1091 *((struct ahd_softc **)host->hostdata) = ahd; 1092 ahd->platform_data->host = host; 1093 host->can_queue = AHD_MAX_QUEUE; 1094 host->cmd_per_lun = 2; 1095 host->sg_tablesize = AHD_NSEG; 1096 host->this_id = ahd->our_id; 1097 host->irq = ahd->platform_data->irq; 1098 host->max_id = (ahd->features & AHD_WIDE) ? 16 : 8; 1099 host->max_lun = AHD_NUM_LUNS; 1100 host->max_channel = 0; 1101 host->sg_tablesize = AHD_NSEG; 1102 ahd_lock(ahd, &s); 1103 ahd_set_unit(ahd, ahd_linux_unit++); 1104 ahd_unlock(ahd, &s); 1105 sprintf(buf, "scsi%d", host->host_no); 1106 new_name = malloc(strlen(buf) + 1, M_DEVBUF, M_NOWAIT); 1107 if (new_name != NULL) { 1108 strcpy(new_name, buf); 1109 ahd_set_name(ahd, new_name); 1110 } 1111 host->unique_id = ahd->unit; 1112 ahd_linux_initialize_scsi_bus(ahd); 1113 ahd_intr_enable(ahd, TRUE); 1114 1115 host->transportt = ahd_linux_transport_template; 1116 1117 retval = scsi_add_host(host, &ahd->dev_softc->dev); 1118 if (retval) { 1119 printk(KERN_WARNING "aic79xx: scsi_add_host failed\n"); 1120 scsi_host_put(host); 1121 return retval; 1122 } 1123 1124 scsi_scan_host(host); 1125 return 0; 1126 } 1127 1128 /* 1129 * Place the SCSI bus into a known state by either resetting it, 1130 * or forcing transfer negotiations on the next command to any 1131 * target. 1132 */ 1133 static void 1134 ahd_linux_initialize_scsi_bus(struct ahd_softc *ahd) 1135 { 1136 u_int target_id; 1137 u_int numtarg; 1138 unsigned long s; 1139 1140 target_id = 0; 1141 numtarg = 0; 1142 1143 if (aic79xx_no_reset != 0) 1144 ahd->flags &= ~AHD_RESET_BUS_A; 1145 1146 if ((ahd->flags & AHD_RESET_BUS_A) != 0) 1147 ahd_reset_channel(ahd, 'A', /*initiate_reset*/TRUE); 1148 else 1149 numtarg = (ahd->features & AHD_WIDE) ? 16 : 8; 1150 1151 ahd_lock(ahd, &s); 1152 1153 /* 1154 * Force negotiation to async for all targets that 1155 * will not see an initial bus reset. 1156 */ 1157 for (; target_id < numtarg; target_id++) { 1158 struct ahd_devinfo devinfo; 1159 struct ahd_initiator_tinfo *tinfo; 1160 struct ahd_tmode_tstate *tstate; 1161 1162 tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id, 1163 target_id, &tstate); 1164 ahd_compile_devinfo(&devinfo, ahd->our_id, target_id, 1165 CAM_LUN_WILDCARD, 'A', ROLE_INITIATOR); 1166 ahd_update_neg_request(ahd, &devinfo, tstate, 1167 tinfo, AHD_NEG_ALWAYS); 1168 } 1169 ahd_unlock(ahd, &s); 1170 /* Give the bus some time to recover */ 1171 if ((ahd->flags & AHD_RESET_BUS_A) != 0) { 1172 ahd_freeze_simq(ahd); 1173 msleep(AIC79XX_RESET_DELAY); 1174 ahd_release_simq(ahd); 1175 } 1176 } 1177 1178 int 1179 ahd_platform_alloc(struct ahd_softc *ahd, void *platform_arg) 1180 { 1181 ahd->platform_data = 1182 malloc(sizeof(struct ahd_platform_data), M_DEVBUF, M_NOWAIT); 1183 if (ahd->platform_data == NULL) 1184 return (ENOMEM); 1185 memset(ahd->platform_data, 0, sizeof(struct ahd_platform_data)); 1186 ahd->platform_data->irq = AHD_LINUX_NOIRQ; 1187 ahd_lockinit(ahd); 1188 ahd->seltime = (aic79xx_seltime & 0x3) << 4; 1189 return (0); 1190 } 1191 1192 void 1193 ahd_platform_free(struct ahd_softc *ahd) 1194 { 1195 struct scsi_target *starget; 1196 int i; 1197 1198 if (ahd->platform_data != NULL) { 1199 /* destroy all of the device and target objects */ 1200 for (i = 0; i < AHD_NUM_TARGETS; i++) { 1201 starget = ahd->platform_data->starget[i]; 1202 if (starget != NULL) { 1203 ahd->platform_data->starget[i] = NULL; 1204 } 1205 } 1206 1207 if (ahd->platform_data->irq != AHD_LINUX_NOIRQ) 1208 free_irq(ahd->platform_data->irq, ahd); 1209 if (ahd->tags[0] == BUS_SPACE_PIO 1210 && ahd->bshs[0].ioport != 0) 1211 release_region(ahd->bshs[0].ioport, 256); 1212 if (ahd->tags[1] == BUS_SPACE_PIO 1213 && ahd->bshs[1].ioport != 0) 1214 release_region(ahd->bshs[1].ioport, 256); 1215 if (ahd->tags[0] == BUS_SPACE_MEMIO 1216 && ahd->bshs[0].maddr != NULL) { 1217 iounmap(ahd->bshs[0].maddr); 1218 release_mem_region(ahd->platform_data->mem_busaddr, 1219 0x1000); 1220 } 1221 if (ahd->platform_data->host) 1222 scsi_host_put(ahd->platform_data->host); 1223 1224 free(ahd->platform_data, M_DEVBUF); 1225 } 1226 } 1227 1228 void 1229 ahd_platform_init(struct ahd_softc *ahd) 1230 { 1231 /* 1232 * Lookup and commit any modified IO Cell options. 1233 */ 1234 if (ahd->unit < ARRAY_SIZE(aic79xx_iocell_info)) { 1235 struct ahd_linux_iocell_opts *iocell_opts; 1236 1237 iocell_opts = &aic79xx_iocell_info[ahd->unit]; 1238 if (iocell_opts->precomp != AIC79XX_DEFAULT_PRECOMP) 1239 AHD_SET_PRECOMP(ahd, iocell_opts->precomp); 1240 if (iocell_opts->slewrate != AIC79XX_DEFAULT_SLEWRATE) 1241 AHD_SET_SLEWRATE(ahd, iocell_opts->slewrate); 1242 if (iocell_opts->amplitude != AIC79XX_DEFAULT_AMPLITUDE) 1243 AHD_SET_AMPLITUDE(ahd, iocell_opts->amplitude); 1244 } 1245 1246 } 1247 1248 void 1249 ahd_platform_freeze_devq(struct ahd_softc *ahd, struct scb *scb) 1250 { 1251 ahd_platform_abort_scbs(ahd, SCB_GET_TARGET(ahd, scb), 1252 SCB_GET_CHANNEL(ahd, scb), 1253 SCB_GET_LUN(scb), SCB_LIST_NULL, 1254 ROLE_UNKNOWN, CAM_REQUEUE_REQ); 1255 } 1256 1257 void 1258 ahd_platform_set_tags(struct ahd_softc *ahd, struct scsi_device *sdev, 1259 struct ahd_devinfo *devinfo, ahd_queue_alg alg) 1260 { 1261 struct ahd_linux_device *dev; 1262 int was_queuing; 1263 int now_queuing; 1264 1265 if (sdev == NULL) 1266 return; 1267 1268 dev = scsi_transport_device_data(sdev); 1269 1270 if (dev == NULL) 1271 return; 1272 was_queuing = dev->flags & (AHD_DEV_Q_BASIC|AHD_DEV_Q_TAGGED); 1273 switch (alg) { 1274 default: 1275 case AHD_QUEUE_NONE: 1276 now_queuing = 0; 1277 break; 1278 case AHD_QUEUE_BASIC: 1279 now_queuing = AHD_DEV_Q_BASIC; 1280 break; 1281 case AHD_QUEUE_TAGGED: 1282 now_queuing = AHD_DEV_Q_TAGGED; 1283 break; 1284 } 1285 if ((dev->flags & AHD_DEV_FREEZE_TIL_EMPTY) == 0 1286 && (was_queuing != now_queuing) 1287 && (dev->active != 0)) { 1288 dev->flags |= AHD_DEV_FREEZE_TIL_EMPTY; 1289 dev->qfrozen++; 1290 } 1291 1292 dev->flags &= ~(AHD_DEV_Q_BASIC|AHD_DEV_Q_TAGGED|AHD_DEV_PERIODIC_OTAG); 1293 if (now_queuing) { 1294 u_int usertags; 1295 1296 usertags = ahd_linux_user_tagdepth(ahd, devinfo); 1297 if (!was_queuing) { 1298 /* 1299 * Start out agressively and allow our 1300 * dynamic queue depth algorithm to take 1301 * care of the rest. 1302 */ 1303 dev->maxtags = usertags; 1304 dev->openings = dev->maxtags - dev->active; 1305 } 1306 if (dev->maxtags == 0) { 1307 /* 1308 * Queueing is disabled by the user. 1309 */ 1310 dev->openings = 1; 1311 } else if (alg == AHD_QUEUE_TAGGED) { 1312 dev->flags |= AHD_DEV_Q_TAGGED; 1313 if (aic79xx_periodic_otag != 0) 1314 dev->flags |= AHD_DEV_PERIODIC_OTAG; 1315 } else 1316 dev->flags |= AHD_DEV_Q_BASIC; 1317 } else { 1318 /* We can only have one opening. */ 1319 dev->maxtags = 0; 1320 dev->openings = 1 - dev->active; 1321 } 1322 1323 switch ((dev->flags & (AHD_DEV_Q_BASIC|AHD_DEV_Q_TAGGED))) { 1324 case AHD_DEV_Q_BASIC: 1325 scsi_set_tag_type(sdev, MSG_SIMPLE_TASK); 1326 scsi_activate_tcq(sdev, dev->openings + dev->active); 1327 break; 1328 case AHD_DEV_Q_TAGGED: 1329 scsi_set_tag_type(sdev, MSG_ORDERED_TASK); 1330 scsi_activate_tcq(sdev, dev->openings + dev->active); 1331 break; 1332 default: 1333 /* 1334 * We allow the OS to queue 2 untagged transactions to 1335 * us at any time even though we can only execute them 1336 * serially on the controller/device. This should 1337 * remove some latency. 1338 */ 1339 scsi_deactivate_tcq(sdev, 1); 1340 break; 1341 } 1342 } 1343 1344 int 1345 ahd_platform_abort_scbs(struct ahd_softc *ahd, int target, char channel, 1346 int lun, u_int tag, role_t role, uint32_t status) 1347 { 1348 return 0; 1349 } 1350 1351 static u_int 1352 ahd_linux_user_tagdepth(struct ahd_softc *ahd, struct ahd_devinfo *devinfo) 1353 { 1354 static int warned_user; 1355 u_int tags; 1356 1357 tags = 0; 1358 if ((ahd->user_discenable & devinfo->target_mask) != 0) { 1359 if (ahd->unit >= ARRAY_SIZE(aic79xx_tag_info)) { 1360 1361 if (warned_user == 0) { 1362 printf(KERN_WARNING 1363 "aic79xx: WARNING: Insufficient tag_info instances\n" 1364 "aic79xx: for installed controllers. Using defaults\n" 1365 "aic79xx: Please update the aic79xx_tag_info array in\n" 1366 "aic79xx: the aic79xx_osm.c source file.\n"); 1367 warned_user++; 1368 } 1369 tags = AHD_MAX_QUEUE; 1370 } else { 1371 adapter_tag_info_t *tag_info; 1372 1373 tag_info = &aic79xx_tag_info[ahd->unit]; 1374 tags = tag_info->tag_commands[devinfo->target_offset]; 1375 if (tags > AHD_MAX_QUEUE) 1376 tags = AHD_MAX_QUEUE; 1377 } 1378 } 1379 return (tags); 1380 } 1381 1382 /* 1383 * Determines the queue depth for a given device. 1384 */ 1385 static void 1386 ahd_linux_device_queue_depth(struct scsi_device *sdev) 1387 { 1388 struct ahd_devinfo devinfo; 1389 u_int tags; 1390 struct ahd_softc *ahd = *((struct ahd_softc **)sdev->host->hostdata); 1391 1392 ahd_compile_devinfo(&devinfo, 1393 ahd->our_id, 1394 sdev->sdev_target->id, sdev->lun, 1395 sdev->sdev_target->channel == 0 ? 'A' : 'B', 1396 ROLE_INITIATOR); 1397 tags = ahd_linux_user_tagdepth(ahd, &devinfo); 1398 if (tags != 0 && sdev->tagged_supported != 0) { 1399 1400 ahd_platform_set_tags(ahd, sdev, &devinfo, AHD_QUEUE_TAGGED); 1401 ahd_send_async(ahd, devinfo.channel, devinfo.target, 1402 devinfo.lun, AC_TRANSFER_NEG); 1403 ahd_print_devinfo(ahd, &devinfo); 1404 printf("Tagged Queuing enabled. Depth %d\n", tags); 1405 } else { 1406 ahd_platform_set_tags(ahd, sdev, &devinfo, AHD_QUEUE_NONE); 1407 ahd_send_async(ahd, devinfo.channel, devinfo.target, 1408 devinfo.lun, AC_TRANSFER_NEG); 1409 } 1410 } 1411 1412 static int 1413 ahd_linux_run_command(struct ahd_softc *ahd, struct ahd_linux_device *dev, 1414 struct scsi_cmnd *cmd) 1415 { 1416 struct scb *scb; 1417 struct hardware_scb *hscb; 1418 struct ahd_initiator_tinfo *tinfo; 1419 struct ahd_tmode_tstate *tstate; 1420 u_int col_idx; 1421 uint16_t mask; 1422 unsigned long flags; 1423 1424 ahd_lock(ahd, &flags); 1425 1426 /* 1427 * Get an scb to use. 1428 */ 1429 tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id, 1430 cmd->device->id, &tstate); 1431 if ((dev->flags & (AHD_DEV_Q_TAGGED|AHD_DEV_Q_BASIC)) == 0 1432 || (tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0) { 1433 col_idx = AHD_NEVER_COL_IDX; 1434 } else { 1435 col_idx = AHD_BUILD_COL_IDX(cmd->device->id, 1436 cmd->device->lun); 1437 } 1438 if ((scb = ahd_get_scb(ahd, col_idx)) == NULL) { 1439 ahd->flags |= AHD_RESOURCE_SHORTAGE; 1440 ahd_unlock(ahd, &flags); 1441 return SCSI_MLQUEUE_HOST_BUSY; 1442 } 1443 1444 scb->io_ctx = cmd; 1445 scb->platform_data->dev = dev; 1446 hscb = scb->hscb; 1447 cmd->host_scribble = (char *)scb; 1448 1449 /* 1450 * Fill out basics of the HSCB. 1451 */ 1452 hscb->control = 0; 1453 hscb->scsiid = BUILD_SCSIID(ahd, cmd); 1454 hscb->lun = cmd->device->lun; 1455 scb->hscb->task_management = 0; 1456 mask = SCB_GET_TARGET_MASK(ahd, scb); 1457 1458 if ((ahd->user_discenable & mask) != 0) 1459 hscb->control |= DISCENB; 1460 1461 if ((tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0) 1462 scb->flags |= SCB_PACKETIZED; 1463 1464 if ((tstate->auto_negotiate & mask) != 0) { 1465 scb->flags |= SCB_AUTO_NEGOTIATE; 1466 scb->hscb->control |= MK_MESSAGE; 1467 } 1468 1469 if ((dev->flags & (AHD_DEV_Q_TAGGED|AHD_DEV_Q_BASIC)) != 0) { 1470 int msg_bytes; 1471 uint8_t tag_msgs[2]; 1472 1473 msg_bytes = scsi_populate_tag_msg(cmd, tag_msgs); 1474 if (msg_bytes && tag_msgs[0] != MSG_SIMPLE_TASK) { 1475 hscb->control |= tag_msgs[0]; 1476 if (tag_msgs[0] == MSG_ORDERED_TASK) 1477 dev->commands_since_idle_or_otag = 0; 1478 } else 1479 if (dev->commands_since_idle_or_otag == AHD_OTAG_THRESH 1480 && (dev->flags & AHD_DEV_Q_TAGGED) != 0) { 1481 hscb->control |= MSG_ORDERED_TASK; 1482 dev->commands_since_idle_or_otag = 0; 1483 } else { 1484 hscb->control |= MSG_SIMPLE_TASK; 1485 } 1486 } 1487 1488 hscb->cdb_len = cmd->cmd_len; 1489 memcpy(hscb->shared_data.idata.cdb, cmd->cmnd, hscb->cdb_len); 1490 1491 scb->platform_data->xfer_len = 0; 1492 ahd_set_residual(scb, 0); 1493 ahd_set_sense_residual(scb, 0); 1494 scb->sg_count = 0; 1495 if (cmd->use_sg != 0) { 1496 void *sg; 1497 struct scatterlist *cur_seg; 1498 u_int nseg; 1499 int dir; 1500 1501 cur_seg = (struct scatterlist *)cmd->request_buffer; 1502 dir = cmd->sc_data_direction; 1503 nseg = pci_map_sg(ahd->dev_softc, cur_seg, 1504 cmd->use_sg, dir); 1505 scb->platform_data->xfer_len = 0; 1506 for (sg = scb->sg_list; nseg > 0; nseg--, cur_seg++) { 1507 dma_addr_t addr; 1508 bus_size_t len; 1509 1510 addr = sg_dma_address(cur_seg); 1511 len = sg_dma_len(cur_seg); 1512 scb->platform_data->xfer_len += len; 1513 sg = ahd_sg_setup(ahd, scb, sg, addr, len, 1514 /*last*/nseg == 1); 1515 } 1516 } else if (cmd->request_bufflen != 0) { 1517 void *sg; 1518 dma_addr_t addr; 1519 int dir; 1520 1521 sg = scb->sg_list; 1522 dir = cmd->sc_data_direction; 1523 addr = pci_map_single(ahd->dev_softc, 1524 cmd->request_buffer, 1525 cmd->request_bufflen, dir); 1526 scb->platform_data->xfer_len = cmd->request_bufflen; 1527 scb->platform_data->buf_busaddr = addr; 1528 sg = ahd_sg_setup(ahd, scb, sg, addr, 1529 cmd->request_bufflen, /*last*/TRUE); 1530 } 1531 1532 LIST_INSERT_HEAD(&ahd->pending_scbs, scb, pending_links); 1533 dev->openings--; 1534 dev->active++; 1535 dev->commands_issued++; 1536 1537 if ((dev->flags & AHD_DEV_PERIODIC_OTAG) != 0) 1538 dev->commands_since_idle_or_otag++; 1539 scb->flags |= SCB_ACTIVE; 1540 ahd_queue_scb(ahd, scb); 1541 1542 ahd_unlock(ahd, &flags); 1543 1544 return 0; 1545 } 1546 1547 /* 1548 * SCSI controller interrupt handler. 1549 */ 1550 irqreturn_t 1551 ahd_linux_isr(int irq, void *dev_id) 1552 { 1553 struct ahd_softc *ahd; 1554 u_long flags; 1555 int ours; 1556 1557 ahd = (struct ahd_softc *) dev_id; 1558 ahd_lock(ahd, &flags); 1559 ours = ahd_intr(ahd); 1560 ahd_unlock(ahd, &flags); 1561 return IRQ_RETVAL(ours); 1562 } 1563 1564 void 1565 ahd_send_async(struct ahd_softc *ahd, char channel, 1566 u_int target, u_int lun, ac_code code) 1567 { 1568 switch (code) { 1569 case AC_TRANSFER_NEG: 1570 { 1571 char buf[80]; 1572 struct scsi_target *starget; 1573 struct info_str info; 1574 struct ahd_initiator_tinfo *tinfo; 1575 struct ahd_tmode_tstate *tstate; 1576 unsigned int target_ppr_options; 1577 1578 BUG_ON(target == CAM_TARGET_WILDCARD); 1579 1580 info.buffer = buf; 1581 info.length = sizeof(buf); 1582 info.offset = 0; 1583 info.pos = 0; 1584 tinfo = ahd_fetch_transinfo(ahd, channel, ahd->our_id, 1585 target, &tstate); 1586 1587 /* 1588 * Don't bother reporting results while 1589 * negotiations are still pending. 1590 */ 1591 if (tinfo->curr.period != tinfo->goal.period 1592 || tinfo->curr.width != tinfo->goal.width 1593 || tinfo->curr.offset != tinfo->goal.offset 1594 || tinfo->curr.ppr_options != tinfo->goal.ppr_options) 1595 if (bootverbose == 0) 1596 break; 1597 1598 /* 1599 * Don't bother reporting results that 1600 * are identical to those last reported. 1601 */ 1602 starget = ahd->platform_data->starget[target]; 1603 if (starget == NULL) 1604 break; 1605 1606 target_ppr_options = 1607 (spi_dt(starget) ? MSG_EXT_PPR_DT_REQ : 0) 1608 + (spi_qas(starget) ? MSG_EXT_PPR_QAS_REQ : 0) 1609 + (spi_iu(starget) ? MSG_EXT_PPR_IU_REQ : 0) 1610 + (spi_rd_strm(starget) ? MSG_EXT_PPR_RD_STRM : 0) 1611 + (spi_pcomp_en(starget) ? MSG_EXT_PPR_PCOMP_EN : 0) 1612 + (spi_rti(starget) ? MSG_EXT_PPR_RTI : 0) 1613 + (spi_wr_flow(starget) ? MSG_EXT_PPR_WR_FLOW : 0) 1614 + (spi_hold_mcs(starget) ? MSG_EXT_PPR_HOLD_MCS : 0); 1615 1616 if (tinfo->curr.period == spi_period(starget) 1617 && tinfo->curr.width == spi_width(starget) 1618 && tinfo->curr.offset == spi_offset(starget) 1619 && tinfo->curr.ppr_options == target_ppr_options) 1620 if (bootverbose == 0) 1621 break; 1622 1623 spi_period(starget) = tinfo->curr.period; 1624 spi_width(starget) = tinfo->curr.width; 1625 spi_offset(starget) = tinfo->curr.offset; 1626 spi_dt(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_DT_REQ ? 1 : 0; 1627 spi_qas(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_QAS_REQ ? 1 : 0; 1628 spi_iu(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ ? 1 : 0; 1629 spi_rd_strm(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_RD_STRM ? 1 : 0; 1630 spi_pcomp_en(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_PCOMP_EN ? 1 : 0; 1631 spi_rti(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_RTI ? 1 : 0; 1632 spi_wr_flow(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_WR_FLOW ? 1 : 0; 1633 spi_hold_mcs(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_HOLD_MCS ? 1 : 0; 1634 spi_display_xfer_agreement(starget); 1635 break; 1636 } 1637 case AC_SENT_BDR: 1638 { 1639 WARN_ON(lun != CAM_LUN_WILDCARD); 1640 scsi_report_device_reset(ahd->platform_data->host, 1641 channel - 'A', target); 1642 break; 1643 } 1644 case AC_BUS_RESET: 1645 if (ahd->platform_data->host != NULL) { 1646 scsi_report_bus_reset(ahd->platform_data->host, 1647 channel - 'A'); 1648 } 1649 break; 1650 default: 1651 panic("ahd_send_async: Unexpected async event"); 1652 } 1653 } 1654 1655 /* 1656 * Calls the higher level scsi done function and frees the scb. 1657 */ 1658 void 1659 ahd_done(struct ahd_softc *ahd, struct scb *scb) 1660 { 1661 struct scsi_cmnd *cmd; 1662 struct ahd_linux_device *dev; 1663 1664 if ((scb->flags & SCB_ACTIVE) == 0) { 1665 printf("SCB %d done'd twice\n", SCB_GET_TAG(scb)); 1666 ahd_dump_card_state(ahd); 1667 panic("Stopping for safety"); 1668 } 1669 LIST_REMOVE(scb, pending_links); 1670 cmd = scb->io_ctx; 1671 dev = scb->platform_data->dev; 1672 dev->active--; 1673 dev->openings++; 1674 if ((cmd->result & (CAM_DEV_QFRZN << 16)) != 0) { 1675 cmd->result &= ~(CAM_DEV_QFRZN << 16); 1676 dev->qfrozen--; 1677 } 1678 ahd_linux_unmap_scb(ahd, scb); 1679 1680 /* 1681 * Guard against stale sense data. 1682 * The Linux mid-layer assumes that sense 1683 * was retrieved anytime the first byte of 1684 * the sense buffer looks "sane". 1685 */ 1686 cmd->sense_buffer[0] = 0; 1687 if (ahd_get_transaction_status(scb) == CAM_REQ_INPROG) { 1688 uint32_t amount_xferred; 1689 1690 amount_xferred = 1691 ahd_get_transfer_length(scb) - ahd_get_residual(scb); 1692 if ((scb->flags & SCB_TRANSMISSION_ERROR) != 0) { 1693 #ifdef AHD_DEBUG 1694 if ((ahd_debug & AHD_SHOW_MISC) != 0) { 1695 ahd_print_path(ahd, scb); 1696 printf("Set CAM_UNCOR_PARITY\n"); 1697 } 1698 #endif 1699 ahd_set_transaction_status(scb, CAM_UNCOR_PARITY); 1700 #ifdef AHD_REPORT_UNDERFLOWS 1701 /* 1702 * This code is disabled by default as some 1703 * clients of the SCSI system do not properly 1704 * initialize the underflow parameter. This 1705 * results in spurious termination of commands 1706 * that complete as expected (e.g. underflow is 1707 * allowed as command can return variable amounts 1708 * of data. 1709 */ 1710 } else if (amount_xferred < scb->io_ctx->underflow) { 1711 u_int i; 1712 1713 ahd_print_path(ahd, scb); 1714 printf("CDB:"); 1715 for (i = 0; i < scb->io_ctx->cmd_len; i++) 1716 printf(" 0x%x", scb->io_ctx->cmnd[i]); 1717 printf("\n"); 1718 ahd_print_path(ahd, scb); 1719 printf("Saw underflow (%ld of %ld bytes). " 1720 "Treated as error\n", 1721 ahd_get_residual(scb), 1722 ahd_get_transfer_length(scb)); 1723 ahd_set_transaction_status(scb, CAM_DATA_RUN_ERR); 1724 #endif 1725 } else { 1726 ahd_set_transaction_status(scb, CAM_REQ_CMP); 1727 } 1728 } else if (ahd_get_transaction_status(scb) == CAM_SCSI_STATUS_ERROR) { 1729 ahd_linux_handle_scsi_status(ahd, cmd->device, scb); 1730 } 1731 1732 if (dev->openings == 1 1733 && ahd_get_transaction_status(scb) == CAM_REQ_CMP 1734 && ahd_get_scsi_status(scb) != SCSI_STATUS_QUEUE_FULL) 1735 dev->tag_success_count++; 1736 /* 1737 * Some devices deal with temporary internal resource 1738 * shortages by returning queue full. When the queue 1739 * full occurrs, we throttle back. Slowly try to get 1740 * back to our previous queue depth. 1741 */ 1742 if ((dev->openings + dev->active) < dev->maxtags 1743 && dev->tag_success_count > AHD_TAG_SUCCESS_INTERVAL) { 1744 dev->tag_success_count = 0; 1745 dev->openings++; 1746 } 1747 1748 if (dev->active == 0) 1749 dev->commands_since_idle_or_otag = 0; 1750 1751 if ((scb->flags & SCB_RECOVERY_SCB) != 0) { 1752 printf("Recovery SCB completes\n"); 1753 if (ahd_get_transaction_status(scb) == CAM_BDR_SENT 1754 || ahd_get_transaction_status(scb) == CAM_REQ_ABORTED) 1755 ahd_set_transaction_status(scb, CAM_CMD_TIMEOUT); 1756 1757 if (ahd->platform_data->eh_done) 1758 complete(ahd->platform_data->eh_done); 1759 } 1760 1761 ahd_free_scb(ahd, scb); 1762 ahd_linux_queue_cmd_complete(ahd, cmd); 1763 } 1764 1765 static void 1766 ahd_linux_handle_scsi_status(struct ahd_softc *ahd, 1767 struct scsi_device *sdev, struct scb *scb) 1768 { 1769 struct ahd_devinfo devinfo; 1770 struct ahd_linux_device *dev = scsi_transport_device_data(sdev); 1771 1772 ahd_compile_devinfo(&devinfo, 1773 ahd->our_id, 1774 sdev->sdev_target->id, sdev->lun, 1775 sdev->sdev_target->channel == 0 ? 'A' : 'B', 1776 ROLE_INITIATOR); 1777 1778 /* 1779 * We don't currently trust the mid-layer to 1780 * properly deal with queue full or busy. So, 1781 * when one occurs, we tell the mid-layer to 1782 * unconditionally requeue the command to us 1783 * so that we can retry it ourselves. We also 1784 * implement our own throttling mechanism so 1785 * we don't clobber the device with too many 1786 * commands. 1787 */ 1788 switch (ahd_get_scsi_status(scb)) { 1789 default: 1790 break; 1791 case SCSI_STATUS_CHECK_COND: 1792 case SCSI_STATUS_CMD_TERMINATED: 1793 { 1794 struct scsi_cmnd *cmd; 1795 1796 /* 1797 * Copy sense information to the OS's cmd 1798 * structure if it is available. 1799 */ 1800 cmd = scb->io_ctx; 1801 if ((scb->flags & (SCB_SENSE|SCB_PKT_SENSE)) != 0) { 1802 struct scsi_status_iu_header *siu; 1803 u_int sense_size; 1804 u_int sense_offset; 1805 1806 if (scb->flags & SCB_SENSE) { 1807 sense_size = min(sizeof(struct scsi_sense_data) 1808 - ahd_get_sense_residual(scb), 1809 (u_long)sizeof(cmd->sense_buffer)); 1810 sense_offset = 0; 1811 } else { 1812 /* 1813 * Copy only the sense data into the provided 1814 * buffer. 1815 */ 1816 siu = (struct scsi_status_iu_header *) 1817 scb->sense_data; 1818 sense_size = min_t(size_t, 1819 scsi_4btoul(siu->sense_length), 1820 sizeof(cmd->sense_buffer)); 1821 sense_offset = SIU_SENSE_OFFSET(siu); 1822 } 1823 1824 memset(cmd->sense_buffer, 0, sizeof(cmd->sense_buffer)); 1825 memcpy(cmd->sense_buffer, 1826 ahd_get_sense_buf(ahd, scb) 1827 + sense_offset, sense_size); 1828 cmd->result |= (DRIVER_SENSE << 24); 1829 1830 #ifdef AHD_DEBUG 1831 if (ahd_debug & AHD_SHOW_SENSE) { 1832 int i; 1833 1834 printf("Copied %d bytes of sense data at %d:", 1835 sense_size, sense_offset); 1836 for (i = 0; i < sense_size; i++) { 1837 if ((i & 0xF) == 0) 1838 printf("\n"); 1839 printf("0x%x ", cmd->sense_buffer[i]); 1840 } 1841 printf("\n"); 1842 } 1843 #endif 1844 } 1845 break; 1846 } 1847 case SCSI_STATUS_QUEUE_FULL: 1848 /* 1849 * By the time the core driver has returned this 1850 * command, all other commands that were queued 1851 * to us but not the device have been returned. 1852 * This ensures that dev->active is equal to 1853 * the number of commands actually queued to 1854 * the device. 1855 */ 1856 dev->tag_success_count = 0; 1857 if (dev->active != 0) { 1858 /* 1859 * Drop our opening count to the number 1860 * of commands currently outstanding. 1861 */ 1862 dev->openings = 0; 1863 #ifdef AHD_DEBUG 1864 if ((ahd_debug & AHD_SHOW_QFULL) != 0) { 1865 ahd_print_path(ahd, scb); 1866 printf("Dropping tag count to %d\n", 1867 dev->active); 1868 } 1869 #endif 1870 if (dev->active == dev->tags_on_last_queuefull) { 1871 1872 dev->last_queuefull_same_count++; 1873 /* 1874 * If we repeatedly see a queue full 1875 * at the same queue depth, this 1876 * device has a fixed number of tag 1877 * slots. Lock in this tag depth 1878 * so we stop seeing queue fulls from 1879 * this device. 1880 */ 1881 if (dev->last_queuefull_same_count 1882 == AHD_LOCK_TAGS_COUNT) { 1883 dev->maxtags = dev->active; 1884 ahd_print_path(ahd, scb); 1885 printf("Locking max tag count at %d\n", 1886 dev->active); 1887 } 1888 } else { 1889 dev->tags_on_last_queuefull = dev->active; 1890 dev->last_queuefull_same_count = 0; 1891 } 1892 ahd_set_transaction_status(scb, CAM_REQUEUE_REQ); 1893 ahd_set_scsi_status(scb, SCSI_STATUS_OK); 1894 ahd_platform_set_tags(ahd, sdev, &devinfo, 1895 (dev->flags & AHD_DEV_Q_BASIC) 1896 ? AHD_QUEUE_BASIC : AHD_QUEUE_TAGGED); 1897 break; 1898 } 1899 /* 1900 * Drop down to a single opening, and treat this 1901 * as if the target returned BUSY SCSI status. 1902 */ 1903 dev->openings = 1; 1904 ahd_platform_set_tags(ahd, sdev, &devinfo, 1905 (dev->flags & AHD_DEV_Q_BASIC) 1906 ? AHD_QUEUE_BASIC : AHD_QUEUE_TAGGED); 1907 ahd_set_scsi_status(scb, SCSI_STATUS_BUSY); 1908 } 1909 } 1910 1911 static void 1912 ahd_linux_queue_cmd_complete(struct ahd_softc *ahd, struct scsi_cmnd *cmd) 1913 { 1914 int status; 1915 int new_status = DID_OK; 1916 int do_fallback = 0; 1917 int scsi_status; 1918 1919 /* 1920 * Map CAM error codes into Linux Error codes. We 1921 * avoid the conversion so that the DV code has the 1922 * full error information available when making 1923 * state change decisions. 1924 */ 1925 1926 status = ahd_cmd_get_transaction_status(cmd); 1927 switch (status) { 1928 case CAM_REQ_INPROG: 1929 case CAM_REQ_CMP: 1930 new_status = DID_OK; 1931 break; 1932 case CAM_AUTOSENSE_FAIL: 1933 new_status = DID_ERROR; 1934 /* Fallthrough */ 1935 case CAM_SCSI_STATUS_ERROR: 1936 scsi_status = ahd_cmd_get_scsi_status(cmd); 1937 1938 switch(scsi_status) { 1939 case SCSI_STATUS_CMD_TERMINATED: 1940 case SCSI_STATUS_CHECK_COND: 1941 if ((cmd->result >> 24) != DRIVER_SENSE) { 1942 do_fallback = 1; 1943 } else { 1944 struct scsi_sense_data *sense; 1945 1946 sense = (struct scsi_sense_data *) 1947 &cmd->sense_buffer; 1948 if (sense->extra_len >= 5 && 1949 (sense->add_sense_code == 0x47 1950 || sense->add_sense_code == 0x48)) 1951 do_fallback = 1; 1952 } 1953 break; 1954 default: 1955 break; 1956 } 1957 break; 1958 case CAM_REQ_ABORTED: 1959 new_status = DID_ABORT; 1960 break; 1961 case CAM_BUSY: 1962 new_status = DID_BUS_BUSY; 1963 break; 1964 case CAM_REQ_INVALID: 1965 case CAM_PATH_INVALID: 1966 new_status = DID_BAD_TARGET; 1967 break; 1968 case CAM_SEL_TIMEOUT: 1969 new_status = DID_NO_CONNECT; 1970 break; 1971 case CAM_SCSI_BUS_RESET: 1972 case CAM_BDR_SENT: 1973 new_status = DID_RESET; 1974 break; 1975 case CAM_UNCOR_PARITY: 1976 new_status = DID_PARITY; 1977 do_fallback = 1; 1978 break; 1979 case CAM_CMD_TIMEOUT: 1980 new_status = DID_TIME_OUT; 1981 do_fallback = 1; 1982 break; 1983 case CAM_REQ_CMP_ERR: 1984 case CAM_UNEXP_BUSFREE: 1985 case CAM_DATA_RUN_ERR: 1986 new_status = DID_ERROR; 1987 do_fallback = 1; 1988 break; 1989 case CAM_UA_ABORT: 1990 case CAM_NO_HBA: 1991 case CAM_SEQUENCE_FAIL: 1992 case CAM_CCB_LEN_ERR: 1993 case CAM_PROVIDE_FAIL: 1994 case CAM_REQ_TERMIO: 1995 case CAM_UNREC_HBA_ERROR: 1996 case CAM_REQ_TOO_BIG: 1997 new_status = DID_ERROR; 1998 break; 1999 case CAM_REQUEUE_REQ: 2000 new_status = DID_REQUEUE; 2001 break; 2002 default: 2003 /* We should never get here */ 2004 new_status = DID_ERROR; 2005 break; 2006 } 2007 2008 if (do_fallback) { 2009 printf("%s: device overrun (status %x) on %d:%d:%d\n", 2010 ahd_name(ahd), status, cmd->device->channel, 2011 cmd->device->id, cmd->device->lun); 2012 } 2013 2014 ahd_cmd_set_transaction_status(cmd, new_status); 2015 2016 cmd->scsi_done(cmd); 2017 } 2018 2019 void 2020 ahd_freeze_simq(struct ahd_softc *ahd) 2021 { 2022 scsi_block_requests(ahd->platform_data->host); 2023 } 2024 2025 void 2026 ahd_release_simq(struct ahd_softc *ahd) 2027 { 2028 scsi_unblock_requests(ahd->platform_data->host); 2029 } 2030 2031 static int 2032 ahd_linux_queue_abort_cmd(struct scsi_cmnd *cmd) 2033 { 2034 struct ahd_softc *ahd; 2035 struct ahd_linux_device *dev; 2036 struct scb *pending_scb; 2037 u_int saved_scbptr; 2038 u_int active_scbptr; 2039 u_int last_phase; 2040 u_int saved_scsiid; 2041 u_int cdb_byte; 2042 int retval; 2043 int was_paused; 2044 int paused; 2045 int wait; 2046 int disconnected; 2047 ahd_mode_state saved_modes; 2048 unsigned long flags; 2049 2050 pending_scb = NULL; 2051 paused = FALSE; 2052 wait = FALSE; 2053 ahd = *(struct ahd_softc **)cmd->device->host->hostdata; 2054 2055 scmd_printk(KERN_INFO, cmd, 2056 "Attempting to queue an ABORT message:"); 2057 2058 printf("CDB:"); 2059 for (cdb_byte = 0; cdb_byte < cmd->cmd_len; cdb_byte++) 2060 printf(" 0x%x", cmd->cmnd[cdb_byte]); 2061 printf("\n"); 2062 2063 ahd_lock(ahd, &flags); 2064 2065 /* 2066 * First determine if we currently own this command. 2067 * Start by searching the device queue. If not found 2068 * there, check the pending_scb list. If not found 2069 * at all, and the system wanted us to just abort the 2070 * command, return success. 2071 */ 2072 dev = scsi_transport_device_data(cmd->device); 2073 2074 if (dev == NULL) { 2075 /* 2076 * No target device for this command exists, 2077 * so we must not still own the command. 2078 */ 2079 scmd_printk(KERN_INFO, cmd, "Is not an active device\n"); 2080 retval = SUCCESS; 2081 goto no_cmd; 2082 } 2083 2084 /* 2085 * See if we can find a matching cmd in the pending list. 2086 */ 2087 LIST_FOREACH(pending_scb, &ahd->pending_scbs, pending_links) { 2088 if (pending_scb->io_ctx == cmd) 2089 break; 2090 } 2091 2092 if (pending_scb == NULL) { 2093 scmd_printk(KERN_INFO, cmd, "Command not found\n"); 2094 goto no_cmd; 2095 } 2096 2097 if ((pending_scb->flags & SCB_RECOVERY_SCB) != 0) { 2098 /* 2099 * We can't queue two recovery actions using the same SCB 2100 */ 2101 retval = FAILED; 2102 goto done; 2103 } 2104 2105 /* 2106 * Ensure that the card doesn't do anything 2107 * behind our back. Also make sure that we 2108 * didn't "just" miss an interrupt that would 2109 * affect this cmd. 2110 */ 2111 was_paused = ahd_is_paused(ahd); 2112 ahd_pause_and_flushwork(ahd); 2113 paused = TRUE; 2114 2115 if ((pending_scb->flags & SCB_ACTIVE) == 0) { 2116 scmd_printk(KERN_INFO, cmd, "Command already completed\n"); 2117 goto no_cmd; 2118 } 2119 2120 printf("%s: At time of recovery, card was %spaused\n", 2121 ahd_name(ahd), was_paused ? "" : "not "); 2122 ahd_dump_card_state(ahd); 2123 2124 disconnected = TRUE; 2125 if (ahd_search_qinfifo(ahd, cmd->device->id, 2126 cmd->device->channel + 'A', 2127 cmd->device->lun, 2128 pending_scb->hscb->tag, 2129 ROLE_INITIATOR, CAM_REQ_ABORTED, 2130 SEARCH_COMPLETE) > 0) { 2131 printf("%s:%d:%d:%d: Cmd aborted from QINFIFO\n", 2132 ahd_name(ahd), cmd->device->channel, 2133 cmd->device->id, cmd->device->lun); 2134 retval = SUCCESS; 2135 goto done; 2136 } 2137 2138 saved_modes = ahd_save_modes(ahd); 2139 ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); 2140 last_phase = ahd_inb(ahd, LASTPHASE); 2141 saved_scbptr = ahd_get_scbptr(ahd); 2142 active_scbptr = saved_scbptr; 2143 if (disconnected && (ahd_inb(ahd, SEQ_FLAGS) & NOT_IDENTIFIED) == 0) { 2144 struct scb *bus_scb; 2145 2146 bus_scb = ahd_lookup_scb(ahd, active_scbptr); 2147 if (bus_scb == pending_scb) 2148 disconnected = FALSE; 2149 } 2150 2151 /* 2152 * At this point, pending_scb is the scb associated with the 2153 * passed in command. That command is currently active on the 2154 * bus or is in the disconnected state. 2155 */ 2156 saved_scsiid = ahd_inb(ahd, SAVED_SCSIID); 2157 if (last_phase != P_BUSFREE 2158 && SCB_GET_TAG(pending_scb) == active_scbptr) { 2159 2160 /* 2161 * We're active on the bus, so assert ATN 2162 * and hope that the target responds. 2163 */ 2164 pending_scb = ahd_lookup_scb(ahd, active_scbptr); 2165 pending_scb->flags |= SCB_RECOVERY_SCB|SCB_ABORT; 2166 ahd_outb(ahd, MSG_OUT, HOST_MSG); 2167 ahd_outb(ahd, SCSISIGO, last_phase|ATNO); 2168 scmd_printk(KERN_INFO, cmd, "Device is active, asserting ATN\n"); 2169 wait = TRUE; 2170 } else if (disconnected) { 2171 2172 /* 2173 * Actually re-queue this SCB in an attempt 2174 * to select the device before it reconnects. 2175 */ 2176 pending_scb->flags |= SCB_RECOVERY_SCB|SCB_ABORT; 2177 ahd_set_scbptr(ahd, SCB_GET_TAG(pending_scb)); 2178 pending_scb->hscb->cdb_len = 0; 2179 pending_scb->hscb->task_attribute = 0; 2180 pending_scb->hscb->task_management = SIU_TASKMGMT_ABORT_TASK; 2181 2182 if ((pending_scb->flags & SCB_PACKETIZED) != 0) { 2183 /* 2184 * Mark the SCB has having an outstanding 2185 * task management function. Should the command 2186 * complete normally before the task management 2187 * function can be sent, the host will be notified 2188 * to abort our requeued SCB. 2189 */ 2190 ahd_outb(ahd, SCB_TASK_MANAGEMENT, 2191 pending_scb->hscb->task_management); 2192 } else { 2193 /* 2194 * If non-packetized, set the MK_MESSAGE control 2195 * bit indicating that we desire to send a message. 2196 * We also set the disconnected flag since there is 2197 * no guarantee that our SCB control byte matches 2198 * the version on the card. We don't want the 2199 * sequencer to abort the command thinking an 2200 * unsolicited reselection occurred. 2201 */ 2202 pending_scb->hscb->control |= MK_MESSAGE|DISCONNECTED; 2203 2204 /* 2205 * The sequencer will never re-reference the 2206 * in-core SCB. To make sure we are notified 2207 * during reslection, set the MK_MESSAGE flag in 2208 * the card's copy of the SCB. 2209 */ 2210 ahd_outb(ahd, SCB_CONTROL, 2211 ahd_inb(ahd, SCB_CONTROL)|MK_MESSAGE); 2212 } 2213 2214 /* 2215 * Clear out any entries in the QINFIFO first 2216 * so we are the next SCB for this target 2217 * to run. 2218 */ 2219 ahd_search_qinfifo(ahd, cmd->device->id, 2220 cmd->device->channel + 'A', cmd->device->lun, 2221 SCB_LIST_NULL, ROLE_INITIATOR, 2222 CAM_REQUEUE_REQ, SEARCH_COMPLETE); 2223 ahd_qinfifo_requeue_tail(ahd, pending_scb); 2224 ahd_set_scbptr(ahd, saved_scbptr); 2225 ahd_print_path(ahd, pending_scb); 2226 printf("Device is disconnected, re-queuing SCB\n"); 2227 wait = TRUE; 2228 } else { 2229 scmd_printk(KERN_INFO, cmd, "Unable to deliver message\n"); 2230 retval = FAILED; 2231 goto done; 2232 } 2233 2234 no_cmd: 2235 /* 2236 * Our assumption is that if we don't have the command, no 2237 * recovery action was required, so we return success. Again, 2238 * the semantics of the mid-layer recovery engine are not 2239 * well defined, so this may change in time. 2240 */ 2241 retval = SUCCESS; 2242 done: 2243 if (paused) 2244 ahd_unpause(ahd); 2245 if (wait) { 2246 DECLARE_COMPLETION_ONSTACK(done); 2247 2248 ahd->platform_data->eh_done = &done; 2249 ahd_unlock(ahd, &flags); 2250 2251 printf("%s: Recovery code sleeping\n", ahd_name(ahd)); 2252 if (!wait_for_completion_timeout(&done, 5 * HZ)) { 2253 ahd_lock(ahd, &flags); 2254 ahd->platform_data->eh_done = NULL; 2255 ahd_unlock(ahd, &flags); 2256 printf("%s: Timer Expired (active %d)\n", 2257 ahd_name(ahd), dev->active); 2258 retval = FAILED; 2259 } 2260 printf("Recovery code awake\n"); 2261 } else 2262 ahd_unlock(ahd, &flags); 2263 2264 if (retval != SUCCESS) 2265 printf("%s: Command abort returning 0x%x\n", 2266 ahd_name(ahd), retval); 2267 2268 return retval; 2269 } 2270 2271 static void ahd_linux_set_width(struct scsi_target *starget, int width) 2272 { 2273 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 2274 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); 2275 struct ahd_devinfo devinfo; 2276 unsigned long flags; 2277 2278 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, 2279 starget->channel + 'A', ROLE_INITIATOR); 2280 ahd_lock(ahd, &flags); 2281 ahd_set_width(ahd, &devinfo, width, AHD_TRANS_GOAL, FALSE); 2282 ahd_unlock(ahd, &flags); 2283 } 2284 2285 static void ahd_linux_set_period(struct scsi_target *starget, int period) 2286 { 2287 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 2288 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); 2289 struct ahd_tmode_tstate *tstate; 2290 struct ahd_initiator_tinfo *tinfo 2291 = ahd_fetch_transinfo(ahd, 2292 starget->channel + 'A', 2293 shost->this_id, starget->id, &tstate); 2294 struct ahd_devinfo devinfo; 2295 unsigned int ppr_options = tinfo->goal.ppr_options; 2296 unsigned int dt; 2297 unsigned long flags; 2298 unsigned long offset = tinfo->goal.offset; 2299 2300 #ifdef AHD_DEBUG 2301 if ((ahd_debug & AHD_SHOW_DV) != 0) 2302 printf("%s: set period to %d\n", ahd_name(ahd), period); 2303 #endif 2304 if (offset == 0) 2305 offset = MAX_OFFSET; 2306 2307 if (period < 8) 2308 period = 8; 2309 if (period < 10) { 2310 ppr_options |= MSG_EXT_PPR_DT_REQ; 2311 if (period == 8) 2312 ppr_options |= MSG_EXT_PPR_IU_REQ; 2313 } 2314 2315 dt = ppr_options & MSG_EXT_PPR_DT_REQ; 2316 2317 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, 2318 starget->channel + 'A', ROLE_INITIATOR); 2319 2320 /* all PPR requests apart from QAS require wide transfers */ 2321 if (ppr_options & ~MSG_EXT_PPR_QAS_REQ) { 2322 if (spi_width(starget) == 0) 2323 ppr_options &= MSG_EXT_PPR_QAS_REQ; 2324 } 2325 2326 ahd_find_syncrate(ahd, &period, &ppr_options, 2327 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); 2328 2329 ahd_lock(ahd, &flags); 2330 ahd_set_syncrate(ahd, &devinfo, period, offset, 2331 ppr_options, AHD_TRANS_GOAL, FALSE); 2332 ahd_unlock(ahd, &flags); 2333 } 2334 2335 static void ahd_linux_set_offset(struct scsi_target *starget, int offset) 2336 { 2337 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 2338 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); 2339 struct ahd_tmode_tstate *tstate; 2340 struct ahd_initiator_tinfo *tinfo 2341 = ahd_fetch_transinfo(ahd, 2342 starget->channel + 'A', 2343 shost->this_id, starget->id, &tstate); 2344 struct ahd_devinfo devinfo; 2345 unsigned int ppr_options = 0; 2346 unsigned int period = 0; 2347 unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ; 2348 unsigned long flags; 2349 2350 #ifdef AHD_DEBUG 2351 if ((ahd_debug & AHD_SHOW_DV) != 0) 2352 printf("%s: set offset to %d\n", ahd_name(ahd), offset); 2353 #endif 2354 2355 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, 2356 starget->channel + 'A', ROLE_INITIATOR); 2357 if (offset != 0) { 2358 period = tinfo->goal.period; 2359 ppr_options = tinfo->goal.ppr_options; 2360 ahd_find_syncrate(ahd, &period, &ppr_options, 2361 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); 2362 } 2363 2364 ahd_lock(ahd, &flags); 2365 ahd_set_syncrate(ahd, &devinfo, period, offset, ppr_options, 2366 AHD_TRANS_GOAL, FALSE); 2367 ahd_unlock(ahd, &flags); 2368 } 2369 2370 static void ahd_linux_set_dt(struct scsi_target *starget, int dt) 2371 { 2372 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 2373 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); 2374 struct ahd_tmode_tstate *tstate; 2375 struct ahd_initiator_tinfo *tinfo 2376 = ahd_fetch_transinfo(ahd, 2377 starget->channel + 'A', 2378 shost->this_id, starget->id, &tstate); 2379 struct ahd_devinfo devinfo; 2380 unsigned int ppr_options = tinfo->goal.ppr_options 2381 & ~MSG_EXT_PPR_DT_REQ; 2382 unsigned int period = tinfo->goal.period; 2383 unsigned int width = tinfo->goal.width; 2384 unsigned long flags; 2385 2386 #ifdef AHD_DEBUG 2387 if ((ahd_debug & AHD_SHOW_DV) != 0) 2388 printf("%s: %s DT\n", ahd_name(ahd), 2389 dt ? "enabling" : "disabling"); 2390 #endif 2391 if (dt) { 2392 ppr_options |= MSG_EXT_PPR_DT_REQ; 2393 if (!width) 2394 ahd_linux_set_width(starget, 1); 2395 } else { 2396 if (period <= 9) 2397 period = 10; /* If resetting DT, period must be >= 25ns */ 2398 /* IU is invalid without DT set */ 2399 ppr_options &= ~MSG_EXT_PPR_IU_REQ; 2400 } 2401 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, 2402 starget->channel + 'A', ROLE_INITIATOR); 2403 ahd_find_syncrate(ahd, &period, &ppr_options, 2404 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); 2405 2406 ahd_lock(ahd, &flags); 2407 ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, 2408 ppr_options, AHD_TRANS_GOAL, FALSE); 2409 ahd_unlock(ahd, &flags); 2410 } 2411 2412 static void ahd_linux_set_qas(struct scsi_target *starget, int qas) 2413 { 2414 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 2415 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); 2416 struct ahd_tmode_tstate *tstate; 2417 struct ahd_initiator_tinfo *tinfo 2418 = ahd_fetch_transinfo(ahd, 2419 starget->channel + 'A', 2420 shost->this_id, starget->id, &tstate); 2421 struct ahd_devinfo devinfo; 2422 unsigned int ppr_options = tinfo->goal.ppr_options 2423 & ~MSG_EXT_PPR_QAS_REQ; 2424 unsigned int period = tinfo->goal.period; 2425 unsigned int dt; 2426 unsigned long flags; 2427 2428 #ifdef AHD_DEBUG 2429 if ((ahd_debug & AHD_SHOW_DV) != 0) 2430 printf("%s: %s QAS\n", ahd_name(ahd), 2431 qas ? "enabling" : "disabling"); 2432 #endif 2433 2434 if (qas) { 2435 ppr_options |= MSG_EXT_PPR_QAS_REQ; 2436 } 2437 2438 dt = ppr_options & MSG_EXT_PPR_DT_REQ; 2439 2440 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, 2441 starget->channel + 'A', ROLE_INITIATOR); 2442 ahd_find_syncrate(ahd, &period, &ppr_options, 2443 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); 2444 2445 ahd_lock(ahd, &flags); 2446 ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, 2447 ppr_options, AHD_TRANS_GOAL, FALSE); 2448 ahd_unlock(ahd, &flags); 2449 } 2450 2451 static void ahd_linux_set_iu(struct scsi_target *starget, int iu) 2452 { 2453 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 2454 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); 2455 struct ahd_tmode_tstate *tstate; 2456 struct ahd_initiator_tinfo *tinfo 2457 = ahd_fetch_transinfo(ahd, 2458 starget->channel + 'A', 2459 shost->this_id, starget->id, &tstate); 2460 struct ahd_devinfo devinfo; 2461 unsigned int ppr_options = tinfo->goal.ppr_options 2462 & ~MSG_EXT_PPR_IU_REQ; 2463 unsigned int period = tinfo->goal.period; 2464 unsigned int dt; 2465 unsigned long flags; 2466 2467 #ifdef AHD_DEBUG 2468 if ((ahd_debug & AHD_SHOW_DV) != 0) 2469 printf("%s: %s IU\n", ahd_name(ahd), 2470 iu ? "enabling" : "disabling"); 2471 #endif 2472 2473 if (iu) { 2474 ppr_options |= MSG_EXT_PPR_IU_REQ; 2475 ppr_options |= MSG_EXT_PPR_DT_REQ; /* IU requires DT */ 2476 } 2477 2478 dt = ppr_options & MSG_EXT_PPR_DT_REQ; 2479 2480 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, 2481 starget->channel + 'A', ROLE_INITIATOR); 2482 ahd_find_syncrate(ahd, &period, &ppr_options, 2483 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); 2484 2485 ahd_lock(ahd, &flags); 2486 ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, 2487 ppr_options, AHD_TRANS_GOAL, FALSE); 2488 ahd_unlock(ahd, &flags); 2489 } 2490 2491 static void ahd_linux_set_rd_strm(struct scsi_target *starget, int rdstrm) 2492 { 2493 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 2494 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); 2495 struct ahd_tmode_tstate *tstate; 2496 struct ahd_initiator_tinfo *tinfo 2497 = ahd_fetch_transinfo(ahd, 2498 starget->channel + 'A', 2499 shost->this_id, starget->id, &tstate); 2500 struct ahd_devinfo devinfo; 2501 unsigned int ppr_options = tinfo->goal.ppr_options 2502 & ~MSG_EXT_PPR_RD_STRM; 2503 unsigned int period = tinfo->goal.period; 2504 unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ; 2505 unsigned long flags; 2506 2507 #ifdef AHD_DEBUG 2508 if ((ahd_debug & AHD_SHOW_DV) != 0) 2509 printf("%s: %s Read Streaming\n", ahd_name(ahd), 2510 rdstrm ? "enabling" : "disabling"); 2511 #endif 2512 2513 if (rdstrm) 2514 ppr_options |= MSG_EXT_PPR_RD_STRM; 2515 2516 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, 2517 starget->channel + 'A', ROLE_INITIATOR); 2518 ahd_find_syncrate(ahd, &period, &ppr_options, 2519 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); 2520 2521 ahd_lock(ahd, &flags); 2522 ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, 2523 ppr_options, AHD_TRANS_GOAL, FALSE); 2524 ahd_unlock(ahd, &flags); 2525 } 2526 2527 static void ahd_linux_set_wr_flow(struct scsi_target *starget, int wrflow) 2528 { 2529 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 2530 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); 2531 struct ahd_tmode_tstate *tstate; 2532 struct ahd_initiator_tinfo *tinfo 2533 = ahd_fetch_transinfo(ahd, 2534 starget->channel + 'A', 2535 shost->this_id, starget->id, &tstate); 2536 struct ahd_devinfo devinfo; 2537 unsigned int ppr_options = tinfo->goal.ppr_options 2538 & ~MSG_EXT_PPR_WR_FLOW; 2539 unsigned int period = tinfo->goal.period; 2540 unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ; 2541 unsigned long flags; 2542 2543 #ifdef AHD_DEBUG 2544 if ((ahd_debug & AHD_SHOW_DV) != 0) 2545 printf("%s: %s Write Flow Control\n", ahd_name(ahd), 2546 wrflow ? "enabling" : "disabling"); 2547 #endif 2548 2549 if (wrflow) 2550 ppr_options |= MSG_EXT_PPR_WR_FLOW; 2551 2552 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, 2553 starget->channel + 'A', ROLE_INITIATOR); 2554 ahd_find_syncrate(ahd, &period, &ppr_options, 2555 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); 2556 2557 ahd_lock(ahd, &flags); 2558 ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, 2559 ppr_options, AHD_TRANS_GOAL, FALSE); 2560 ahd_unlock(ahd, &flags); 2561 } 2562 2563 static void ahd_linux_set_rti(struct scsi_target *starget, int rti) 2564 { 2565 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 2566 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); 2567 struct ahd_tmode_tstate *tstate; 2568 struct ahd_initiator_tinfo *tinfo 2569 = ahd_fetch_transinfo(ahd, 2570 starget->channel + 'A', 2571 shost->this_id, starget->id, &tstate); 2572 struct ahd_devinfo devinfo; 2573 unsigned int ppr_options = tinfo->goal.ppr_options 2574 & ~MSG_EXT_PPR_RTI; 2575 unsigned int period = tinfo->goal.period; 2576 unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ; 2577 unsigned long flags; 2578 2579 if ((ahd->features & AHD_RTI) == 0) { 2580 #ifdef AHD_DEBUG 2581 if ((ahd_debug & AHD_SHOW_DV) != 0) 2582 printf("%s: RTI not available\n", ahd_name(ahd)); 2583 #endif 2584 return; 2585 } 2586 2587 #ifdef AHD_DEBUG 2588 if ((ahd_debug & AHD_SHOW_DV) != 0) 2589 printf("%s: %s RTI\n", ahd_name(ahd), 2590 rti ? "enabling" : "disabling"); 2591 #endif 2592 2593 if (rti) 2594 ppr_options |= MSG_EXT_PPR_RTI; 2595 2596 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, 2597 starget->channel + 'A', ROLE_INITIATOR); 2598 ahd_find_syncrate(ahd, &period, &ppr_options, 2599 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); 2600 2601 ahd_lock(ahd, &flags); 2602 ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, 2603 ppr_options, AHD_TRANS_GOAL, FALSE); 2604 ahd_unlock(ahd, &flags); 2605 } 2606 2607 static void ahd_linux_set_pcomp_en(struct scsi_target *starget, int pcomp) 2608 { 2609 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 2610 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); 2611 struct ahd_tmode_tstate *tstate; 2612 struct ahd_initiator_tinfo *tinfo 2613 = ahd_fetch_transinfo(ahd, 2614 starget->channel + 'A', 2615 shost->this_id, starget->id, &tstate); 2616 struct ahd_devinfo devinfo; 2617 unsigned int ppr_options = tinfo->goal.ppr_options 2618 & ~MSG_EXT_PPR_PCOMP_EN; 2619 unsigned int period = tinfo->goal.period; 2620 unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ; 2621 unsigned long flags; 2622 2623 #ifdef AHD_DEBUG 2624 if ((ahd_debug & AHD_SHOW_DV) != 0) 2625 printf("%s: %s Precompensation\n", ahd_name(ahd), 2626 pcomp ? "Enable" : "Disable"); 2627 #endif 2628 2629 if (pcomp) { 2630 uint8_t precomp; 2631 2632 if (ahd->unit < ARRAY_SIZE(aic79xx_iocell_info)) { 2633 struct ahd_linux_iocell_opts *iocell_opts; 2634 2635 iocell_opts = &aic79xx_iocell_info[ahd->unit]; 2636 precomp = iocell_opts->precomp; 2637 } else { 2638 precomp = AIC79XX_DEFAULT_PRECOMP; 2639 } 2640 ppr_options |= MSG_EXT_PPR_PCOMP_EN; 2641 AHD_SET_PRECOMP(ahd, precomp); 2642 } else { 2643 AHD_SET_PRECOMP(ahd, 0); 2644 } 2645 2646 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, 2647 starget->channel + 'A', ROLE_INITIATOR); 2648 ahd_find_syncrate(ahd, &period, &ppr_options, 2649 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); 2650 2651 ahd_lock(ahd, &flags); 2652 ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, 2653 ppr_options, AHD_TRANS_GOAL, FALSE); 2654 ahd_unlock(ahd, &flags); 2655 } 2656 2657 static void ahd_linux_set_hold_mcs(struct scsi_target *starget, int hold) 2658 { 2659 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 2660 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); 2661 struct ahd_tmode_tstate *tstate; 2662 struct ahd_initiator_tinfo *tinfo 2663 = ahd_fetch_transinfo(ahd, 2664 starget->channel + 'A', 2665 shost->this_id, starget->id, &tstate); 2666 struct ahd_devinfo devinfo; 2667 unsigned int ppr_options = tinfo->goal.ppr_options 2668 & ~MSG_EXT_PPR_HOLD_MCS; 2669 unsigned int period = tinfo->goal.period; 2670 unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ; 2671 unsigned long flags; 2672 2673 if (hold) 2674 ppr_options |= MSG_EXT_PPR_HOLD_MCS; 2675 2676 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, 2677 starget->channel + 'A', ROLE_INITIATOR); 2678 ahd_find_syncrate(ahd, &period, &ppr_options, 2679 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); 2680 2681 ahd_lock(ahd, &flags); 2682 ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, 2683 ppr_options, AHD_TRANS_GOAL, FALSE); 2684 ahd_unlock(ahd, &flags); 2685 } 2686 2687 static void ahd_linux_get_signalling(struct Scsi_Host *shost) 2688 { 2689 struct ahd_softc *ahd = *(struct ahd_softc **)shost->hostdata; 2690 unsigned long flags; 2691 u8 mode; 2692 2693 ahd_lock(ahd, &flags); 2694 ahd_pause(ahd); 2695 mode = ahd_inb(ahd, SBLKCTL); 2696 ahd_unpause(ahd); 2697 ahd_unlock(ahd, &flags); 2698 2699 if (mode & ENAB40) 2700 spi_signalling(shost) = SPI_SIGNAL_LVD; 2701 else if (mode & ENAB20) 2702 spi_signalling(shost) = SPI_SIGNAL_SE; 2703 else 2704 spi_signalling(shost) = SPI_SIGNAL_UNKNOWN; 2705 } 2706 2707 static struct spi_function_template ahd_linux_transport_functions = { 2708 .set_offset = ahd_linux_set_offset, 2709 .show_offset = 1, 2710 .set_period = ahd_linux_set_period, 2711 .show_period = 1, 2712 .set_width = ahd_linux_set_width, 2713 .show_width = 1, 2714 .set_dt = ahd_linux_set_dt, 2715 .show_dt = 1, 2716 .set_iu = ahd_linux_set_iu, 2717 .show_iu = 1, 2718 .set_qas = ahd_linux_set_qas, 2719 .show_qas = 1, 2720 .set_rd_strm = ahd_linux_set_rd_strm, 2721 .show_rd_strm = 1, 2722 .set_wr_flow = ahd_linux_set_wr_flow, 2723 .show_wr_flow = 1, 2724 .set_rti = ahd_linux_set_rti, 2725 .show_rti = 1, 2726 .set_pcomp_en = ahd_linux_set_pcomp_en, 2727 .show_pcomp_en = 1, 2728 .set_hold_mcs = ahd_linux_set_hold_mcs, 2729 .show_hold_mcs = 1, 2730 .get_signalling = ahd_linux_get_signalling, 2731 }; 2732 2733 static int __init 2734 ahd_linux_init(void) 2735 { 2736 int error = 0; 2737 2738 /* 2739 * If we've been passed any parameters, process them now. 2740 */ 2741 if (aic79xx) 2742 aic79xx_setup(aic79xx); 2743 2744 ahd_linux_transport_template = 2745 spi_attach_transport(&ahd_linux_transport_functions); 2746 if (!ahd_linux_transport_template) 2747 return -ENODEV; 2748 2749 scsi_transport_reserve_device(ahd_linux_transport_template, 2750 sizeof(struct ahd_linux_device)); 2751 2752 error = ahd_linux_pci_init(); 2753 if (error) 2754 spi_release_transport(ahd_linux_transport_template); 2755 return error; 2756 } 2757 2758 static void __exit 2759 ahd_linux_exit(void) 2760 { 2761 ahd_linux_pci_exit(); 2762 spi_release_transport(ahd_linux_transport_template); 2763 } 2764 2765 module_init(ahd_linux_init); 2766 module_exit(ahd_linux_exit); 2767