aic79xx_osm.c revision 7d12e780e003f93433d49ce78cfedf4b4c52adc5
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 49static 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 */ 85typedef 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. 123adapter_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 */ 153static 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 */ 178struct 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 196static 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 222void 223ahd_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 */ 243static 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 */ 250static 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 */ 266static 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 */ 274uint32_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 */ 286static 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 */ 296uint32_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 */ 311uint32_t aic79xx_slowcrc; 312 313/* 314 * Module information and settable options. 315 */ 316static char *aic79xx = NULL; 317 318MODULE_AUTHOR("Maintainer: Justin T. Gibbs <gibbs@scsiguy.com>"); 319MODULE_DESCRIPTION("Adaptec Aic790X U320 SCSI Host Bus Adapter driver"); 320MODULE_LICENSE("Dual BSD/GPL"); 321MODULE_VERSION(AIC79XX_DRIVER_VERSION); 322module_param(aic79xx, charp, 0444); 323MODULE_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 351static void ahd_linux_handle_scsi_status(struct ahd_softc *, 352 struct scsi_device *, 353 struct scb *); 354static void ahd_linux_queue_cmd_complete(struct ahd_softc *ahd, 355 struct scsi_cmnd *cmd); 356static int ahd_linux_queue_abort_cmd(struct scsi_cmnd *cmd); 357static void ahd_linux_initialize_scsi_bus(struct ahd_softc *ahd); 358static u_int ahd_linux_user_tagdepth(struct ahd_softc *ahd, 359 struct ahd_devinfo *devinfo); 360static void ahd_linux_device_queue_depth(struct scsi_device *); 361static int ahd_linux_run_command(struct ahd_softc*, 362 struct ahd_linux_device *, 363 struct scsi_cmnd *); 364static void ahd_linux_setup_tag_info_global(char *p); 365static int aic79xx_setup(char *c); 366 367static int ahd_linux_unit; 368 369 370/****************************** Inlines ***************************************/ 371static __inline void ahd_linux_unmap_scb(struct ahd_softc*, struct scb*); 372 373static __inline void 374ahd_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 */ 401static const char * 402ahd_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 strcat(bp, "\n"); 422 423 return (bp); 424} 425 426/* 427 * Queue an SCB to the controller. 428 */ 429static int 430ahd_linux_queue(struct scsi_cmnd * cmd, void (*scsi_done) (struct scsi_cmnd *)) 431{ 432 struct ahd_softc *ahd; 433 struct ahd_linux_device *dev = scsi_transport_device_data(cmd->device); 434 int rtn = SCSI_MLQUEUE_HOST_BUSY; 435 436 ahd = *(struct ahd_softc **)cmd->device->host->hostdata; 437 438 cmd->scsi_done = scsi_done; 439 cmd->result = CAM_REQ_INPROG << 16; 440 rtn = ahd_linux_run_command(ahd, dev, cmd); 441 442 return rtn; 443} 444 445static inline struct scsi_target ** 446ahd_linux_target_in_softc(struct scsi_target *starget) 447{ 448 struct ahd_softc *ahd = 449 *((struct ahd_softc **)dev_to_shost(&starget->dev)->hostdata); 450 unsigned int target_offset; 451 452 target_offset = starget->id; 453 if (starget->channel != 0) 454 target_offset += 8; 455 456 return &ahd->platform_data->starget[target_offset]; 457} 458 459static int 460ahd_linux_target_alloc(struct scsi_target *starget) 461{ 462 struct ahd_softc *ahd = 463 *((struct ahd_softc **)dev_to_shost(&starget->dev)->hostdata); 464 struct seeprom_config *sc = ahd->seep_config; 465 unsigned long flags; 466 struct scsi_target **ahd_targp = ahd_linux_target_in_softc(starget); 467 struct ahd_devinfo devinfo; 468 struct ahd_initiator_tinfo *tinfo; 469 struct ahd_tmode_tstate *tstate; 470 char channel = starget->channel + 'A'; 471 472 ahd_lock(ahd, &flags); 473 474 BUG_ON(*ahd_targp != NULL); 475 476 *ahd_targp = starget; 477 478 if (sc) { 479 int flags = sc->device_flags[starget->id]; 480 481 tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id, 482 starget->id, &tstate); 483 484 if ((flags & CFPACKETIZED) == 0) { 485 /* Do not negotiate packetized transfers */ 486 spi_rd_strm(starget) = 0; 487 spi_pcomp_en(starget) = 0; 488 spi_rti(starget) = 0; 489 spi_wr_flow(starget) = 0; 490 spi_hold_mcs(starget) = 0; 491 } else { 492 if ((ahd->features & AHD_RTI) == 0) 493 spi_rti(starget) = 0; 494 } 495 496 if ((flags & CFQAS) == 0) 497 spi_qas(starget) = 0; 498 499 /* Transinfo values have been set to BIOS settings */ 500 spi_max_width(starget) = (flags & CFWIDEB) ? 1 : 0; 501 spi_min_period(starget) = tinfo->user.period; 502 spi_max_offset(starget) = tinfo->user.offset; 503 } 504 505 tinfo = ahd_fetch_transinfo(ahd, channel, ahd->our_id, 506 starget->id, &tstate); 507 ahd_compile_devinfo(&devinfo, ahd->our_id, starget->id, 508 CAM_LUN_WILDCARD, channel, 509 ROLE_INITIATOR); 510 ahd_set_syncrate(ahd, &devinfo, 0, 0, 0, 511 AHD_TRANS_GOAL, /*paused*/FALSE); 512 ahd_set_width(ahd, &devinfo, MSG_EXT_WDTR_BUS_8_BIT, 513 AHD_TRANS_GOAL, /*paused*/FALSE); 514 ahd_unlock(ahd, &flags); 515 516 return 0; 517} 518 519static void 520ahd_linux_target_destroy(struct scsi_target *starget) 521{ 522 struct scsi_target **ahd_targp = ahd_linux_target_in_softc(starget); 523 524 *ahd_targp = NULL; 525} 526 527static int 528ahd_linux_slave_alloc(struct scsi_device *sdev) 529{ 530 struct ahd_softc *ahd = 531 *((struct ahd_softc **)sdev->host->hostdata); 532 struct ahd_linux_device *dev; 533 534 if (bootverbose) 535 printf("%s: Slave Alloc %d\n", ahd_name(ahd), sdev->id); 536 537 dev = scsi_transport_device_data(sdev); 538 memset(dev, 0, sizeof(*dev)); 539 540 /* 541 * We start out life using untagged 542 * transactions of which we allow one. 543 */ 544 dev->openings = 1; 545 546 /* 547 * Set maxtags to 0. This will be changed if we 548 * later determine that we are dealing with 549 * a tagged queuing capable device. 550 */ 551 dev->maxtags = 0; 552 553 return (0); 554} 555 556static int 557ahd_linux_slave_configure(struct scsi_device *sdev) 558{ 559 struct ahd_softc *ahd; 560 561 ahd = *((struct ahd_softc **)sdev->host->hostdata); 562 if (bootverbose) 563 sdev_printk(KERN_INFO, sdev, "Slave Configure\n"); 564 565 ahd_linux_device_queue_depth(sdev); 566 567 /* Initial Domain Validation */ 568 if (!spi_initial_dv(sdev->sdev_target)) 569 spi_dv_device(sdev); 570 571 return 0; 572} 573 574#if defined(__i386__) 575/* 576 * Return the disk geometry for the given SCSI device. 577 */ 578static int 579ahd_linux_biosparam(struct scsi_device *sdev, struct block_device *bdev, 580 sector_t capacity, int geom[]) 581{ 582 uint8_t *bh; 583 int heads; 584 int sectors; 585 int cylinders; 586 int ret; 587 int extended; 588 struct ahd_softc *ahd; 589 590 ahd = *((struct ahd_softc **)sdev->host->hostdata); 591 592 bh = scsi_bios_ptable(bdev); 593 if (bh) { 594 ret = scsi_partsize(bh, capacity, 595 &geom[2], &geom[0], &geom[1]); 596 kfree(bh); 597 if (ret != -1) 598 return (ret); 599 } 600 heads = 64; 601 sectors = 32; 602 cylinders = aic_sector_div(capacity, heads, sectors); 603 604 if (aic79xx_extended != 0) 605 extended = 1; 606 else 607 extended = (ahd->flags & AHD_EXTENDED_TRANS_A) != 0; 608 if (extended && cylinders >= 1024) { 609 heads = 255; 610 sectors = 63; 611 cylinders = aic_sector_div(capacity, heads, sectors); 612 } 613 geom[0] = heads; 614 geom[1] = sectors; 615 geom[2] = cylinders; 616 return (0); 617} 618#endif 619 620/* 621 * Abort the current SCSI command(s). 622 */ 623static int 624ahd_linux_abort(struct scsi_cmnd *cmd) 625{ 626 int error; 627 628 error = ahd_linux_queue_abort_cmd(cmd); 629 630 return error; 631} 632 633/* 634 * Attempt to send a target reset message to the device that timed out. 635 */ 636static int 637ahd_linux_dev_reset(struct scsi_cmnd *cmd) 638{ 639 struct ahd_softc *ahd; 640 struct ahd_linux_device *dev; 641 struct scb *reset_scb; 642 u_int cdb_byte; 643 int retval = SUCCESS; 644 int paused; 645 int wait; 646 struct ahd_initiator_tinfo *tinfo; 647 struct ahd_tmode_tstate *tstate; 648 unsigned long flags; 649 DECLARE_COMPLETION_ONSTACK(done); 650 651 reset_scb = NULL; 652 paused = FALSE; 653 wait = FALSE; 654 ahd = *(struct ahd_softc **)cmd->device->host->hostdata; 655 656 scmd_printk(KERN_INFO, cmd, 657 "Attempting to queue a TARGET RESET message:"); 658 659 printf("CDB:"); 660 for (cdb_byte = 0; cdb_byte < cmd->cmd_len; cdb_byte++) 661 printf(" 0x%x", cmd->cmnd[cdb_byte]); 662 printf("\n"); 663 664 /* 665 * Determine if we currently own this command. 666 */ 667 dev = scsi_transport_device_data(cmd->device); 668 669 if (dev == NULL) { 670 /* 671 * No target device for this command exists, 672 * so we must not still own the command. 673 */ 674 scmd_printk(KERN_INFO, cmd, "Is not an active device\n"); 675 return SUCCESS; 676 } 677 678 /* 679 * Generate us a new SCB 680 */ 681 reset_scb = ahd_get_scb(ahd, AHD_NEVER_COL_IDX); 682 if (!reset_scb) { 683 scmd_printk(KERN_INFO, cmd, "No SCB available\n"); 684 return FAILED; 685 } 686 687 tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id, 688 cmd->device->id, &tstate); 689 reset_scb->io_ctx = cmd; 690 reset_scb->platform_data->dev = dev; 691 reset_scb->sg_count = 0; 692 ahd_set_residual(reset_scb, 0); 693 ahd_set_sense_residual(reset_scb, 0); 694 reset_scb->platform_data->xfer_len = 0; 695 reset_scb->hscb->control = 0; 696 reset_scb->hscb->scsiid = BUILD_SCSIID(ahd,cmd); 697 reset_scb->hscb->lun = cmd->device->lun; 698 reset_scb->hscb->cdb_len = 0; 699 reset_scb->hscb->task_management = SIU_TASKMGMT_LUN_RESET; 700 reset_scb->flags |= SCB_DEVICE_RESET|SCB_RECOVERY_SCB|SCB_ACTIVE; 701 if ((tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0) { 702 reset_scb->flags |= SCB_PACKETIZED; 703 } else { 704 reset_scb->hscb->control |= MK_MESSAGE; 705 } 706 dev->openings--; 707 dev->active++; 708 dev->commands_issued++; 709 710 ahd_lock(ahd, &flags); 711 712 LIST_INSERT_HEAD(&ahd->pending_scbs, reset_scb, pending_links); 713 ahd_queue_scb(ahd, reset_scb); 714 715 ahd->platform_data->eh_done = &done; 716 ahd_unlock(ahd, &flags); 717 718 printf("%s: Device reset code sleeping\n", ahd_name(ahd)); 719 if (!wait_for_completion_timeout(&done, 5 * HZ)) { 720 ahd_lock(ahd, &flags); 721 ahd->platform_data->eh_done = NULL; 722 ahd_unlock(ahd, &flags); 723 printf("%s: Device reset timer expired (active %d)\n", 724 ahd_name(ahd), dev->active); 725 retval = FAILED; 726 } 727 printf("%s: Device reset returning 0x%x\n", ahd_name(ahd), retval); 728 729 return (retval); 730} 731 732/* 733 * Reset the SCSI bus. 734 */ 735static int 736ahd_linux_bus_reset(struct scsi_cmnd *cmd) 737{ 738 struct ahd_softc *ahd; 739 int found; 740 unsigned long flags; 741 742 ahd = *(struct ahd_softc **)cmd->device->host->hostdata; 743#ifdef AHD_DEBUG 744 if ((ahd_debug & AHD_SHOW_RECOVERY) != 0) 745 printf("%s: Bus reset called for cmd %p\n", 746 ahd_name(ahd), cmd); 747#endif 748 ahd_lock(ahd, &flags); 749 750 found = ahd_reset_channel(ahd, scmd_channel(cmd) + 'A', 751 /*initiate reset*/TRUE); 752 ahd_unlock(ahd, &flags); 753 754 if (bootverbose) 755 printf("%s: SCSI bus reset delivered. " 756 "%d SCBs aborted.\n", ahd_name(ahd), found); 757 758 return (SUCCESS); 759} 760 761struct scsi_host_template aic79xx_driver_template = { 762 .module = THIS_MODULE, 763 .name = "aic79xx", 764 .proc_name = "aic79xx", 765 .proc_info = ahd_linux_proc_info, 766 .info = ahd_linux_info, 767 .queuecommand = ahd_linux_queue, 768 .eh_abort_handler = ahd_linux_abort, 769 .eh_device_reset_handler = ahd_linux_dev_reset, 770 .eh_bus_reset_handler = ahd_linux_bus_reset, 771#if defined(__i386__) 772 .bios_param = ahd_linux_biosparam, 773#endif 774 .can_queue = AHD_MAX_QUEUE, 775 .this_id = -1, 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 *************************************/ 785int 786ahd_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 813void 814ahd_dma_tag_destroy(struct ahd_softc *ahd, bus_dma_tag_t dmat) 815{ 816 free(dmat, M_DEVBUF); 817} 818 819int 820ahd_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 830void 831ahd_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 838int 839ahd_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 855void 856ahd_dmamap_destroy(struct ahd_softc *ahd, bus_dma_tag_t dmat, bus_dmamap_t map) 857{ 858} 859 860int 861ahd_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 ***************************/ 868static void 869ahd_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 883static void 884ahd_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 898static void 899ahd_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 911static char * 912ahd_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 */ 996static int 997aic79xx_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 1075uint32_t aic79xx_verbose; 1076 1077int 1078ahd_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 1128uint64_t 1129ahd_linux_get_memsize(void) 1130{ 1131 struct sysinfo si; 1132 1133 si_meminfo(&si); 1134 return ((uint64_t)si.totalram << PAGE_SHIFT); 1135} 1136 1137/* 1138 * Place the SCSI bus into a known state by either resetting it, 1139 * or forcing transfer negotiations on the next command to any 1140 * target. 1141 */ 1142static void 1143ahd_linux_initialize_scsi_bus(struct ahd_softc *ahd) 1144{ 1145 u_int target_id; 1146 u_int numtarg; 1147 unsigned long s; 1148 1149 target_id = 0; 1150 numtarg = 0; 1151 1152 if (aic79xx_no_reset != 0) 1153 ahd->flags &= ~AHD_RESET_BUS_A; 1154 1155 if ((ahd->flags & AHD_RESET_BUS_A) != 0) 1156 ahd_reset_channel(ahd, 'A', /*initiate_reset*/TRUE); 1157 else 1158 numtarg = (ahd->features & AHD_WIDE) ? 16 : 8; 1159 1160 ahd_lock(ahd, &s); 1161 1162 /* 1163 * Force negotiation to async for all targets that 1164 * will not see an initial bus reset. 1165 */ 1166 for (; target_id < numtarg; target_id++) { 1167 struct ahd_devinfo devinfo; 1168 struct ahd_initiator_tinfo *tinfo; 1169 struct ahd_tmode_tstate *tstate; 1170 1171 tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id, 1172 target_id, &tstate); 1173 ahd_compile_devinfo(&devinfo, ahd->our_id, target_id, 1174 CAM_LUN_WILDCARD, 'A', ROLE_INITIATOR); 1175 ahd_update_neg_request(ahd, &devinfo, tstate, 1176 tinfo, AHD_NEG_ALWAYS); 1177 } 1178 ahd_unlock(ahd, &s); 1179 /* Give the bus some time to recover */ 1180 if ((ahd->flags & AHD_RESET_BUS_A) != 0) { 1181 ahd_freeze_simq(ahd); 1182 msleep(AIC79XX_RESET_DELAY); 1183 ahd_release_simq(ahd); 1184 } 1185} 1186 1187int 1188ahd_platform_alloc(struct ahd_softc *ahd, void *platform_arg) 1189{ 1190 ahd->platform_data = 1191 malloc(sizeof(struct ahd_platform_data), M_DEVBUF, M_NOWAIT); 1192 if (ahd->platform_data == NULL) 1193 return (ENOMEM); 1194 memset(ahd->platform_data, 0, sizeof(struct ahd_platform_data)); 1195 ahd->platform_data->irq = AHD_LINUX_NOIRQ; 1196 ahd_lockinit(ahd); 1197 ahd->seltime = (aic79xx_seltime & 0x3) << 4; 1198 return (0); 1199} 1200 1201void 1202ahd_platform_free(struct ahd_softc *ahd) 1203{ 1204 struct scsi_target *starget; 1205 int i; 1206 1207 if (ahd->platform_data != NULL) { 1208 /* destroy all of the device and target objects */ 1209 for (i = 0; i < AHD_NUM_TARGETS; i++) { 1210 starget = ahd->platform_data->starget[i]; 1211 if (starget != NULL) { 1212 ahd->platform_data->starget[i] = NULL; 1213 } 1214 } 1215 1216 if (ahd->platform_data->irq != AHD_LINUX_NOIRQ) 1217 free_irq(ahd->platform_data->irq, ahd); 1218 if (ahd->tags[0] == BUS_SPACE_PIO 1219 && ahd->bshs[0].ioport != 0) 1220 release_region(ahd->bshs[0].ioport, 256); 1221 if (ahd->tags[1] == BUS_SPACE_PIO 1222 && ahd->bshs[1].ioport != 0) 1223 release_region(ahd->bshs[1].ioport, 256); 1224 if (ahd->tags[0] == BUS_SPACE_MEMIO 1225 && ahd->bshs[0].maddr != NULL) { 1226 iounmap(ahd->bshs[0].maddr); 1227 release_mem_region(ahd->platform_data->mem_busaddr, 1228 0x1000); 1229 } 1230 if (ahd->platform_data->host) 1231 scsi_host_put(ahd->platform_data->host); 1232 1233 free(ahd->platform_data, M_DEVBUF); 1234 } 1235} 1236 1237void 1238ahd_platform_init(struct ahd_softc *ahd) 1239{ 1240 /* 1241 * Lookup and commit any modified IO Cell options. 1242 */ 1243 if (ahd->unit < ARRAY_SIZE(aic79xx_iocell_info)) { 1244 struct ahd_linux_iocell_opts *iocell_opts; 1245 1246 iocell_opts = &aic79xx_iocell_info[ahd->unit]; 1247 if (iocell_opts->precomp != AIC79XX_DEFAULT_PRECOMP) 1248 AHD_SET_PRECOMP(ahd, iocell_opts->precomp); 1249 if (iocell_opts->slewrate != AIC79XX_DEFAULT_SLEWRATE) 1250 AHD_SET_SLEWRATE(ahd, iocell_opts->slewrate); 1251 if (iocell_opts->amplitude != AIC79XX_DEFAULT_AMPLITUDE) 1252 AHD_SET_AMPLITUDE(ahd, iocell_opts->amplitude); 1253 } 1254 1255} 1256 1257void 1258ahd_platform_freeze_devq(struct ahd_softc *ahd, struct scb *scb) 1259{ 1260 ahd_platform_abort_scbs(ahd, SCB_GET_TARGET(ahd, scb), 1261 SCB_GET_CHANNEL(ahd, scb), 1262 SCB_GET_LUN(scb), SCB_LIST_NULL, 1263 ROLE_UNKNOWN, CAM_REQUEUE_REQ); 1264} 1265 1266void 1267ahd_platform_set_tags(struct ahd_softc *ahd, struct scsi_device *sdev, 1268 struct ahd_devinfo *devinfo, ahd_queue_alg alg) 1269{ 1270 struct ahd_linux_device *dev; 1271 int was_queuing; 1272 int now_queuing; 1273 1274 if (sdev == NULL) 1275 return; 1276 1277 dev = scsi_transport_device_data(sdev); 1278 1279 if (dev == NULL) 1280 return; 1281 was_queuing = dev->flags & (AHD_DEV_Q_BASIC|AHD_DEV_Q_TAGGED); 1282 switch (alg) { 1283 default: 1284 case AHD_QUEUE_NONE: 1285 now_queuing = 0; 1286 break; 1287 case AHD_QUEUE_BASIC: 1288 now_queuing = AHD_DEV_Q_BASIC; 1289 break; 1290 case AHD_QUEUE_TAGGED: 1291 now_queuing = AHD_DEV_Q_TAGGED; 1292 break; 1293 } 1294 if ((dev->flags & AHD_DEV_FREEZE_TIL_EMPTY) == 0 1295 && (was_queuing != now_queuing) 1296 && (dev->active != 0)) { 1297 dev->flags |= AHD_DEV_FREEZE_TIL_EMPTY; 1298 dev->qfrozen++; 1299 } 1300 1301 dev->flags &= ~(AHD_DEV_Q_BASIC|AHD_DEV_Q_TAGGED|AHD_DEV_PERIODIC_OTAG); 1302 if (now_queuing) { 1303 u_int usertags; 1304 1305 usertags = ahd_linux_user_tagdepth(ahd, devinfo); 1306 if (!was_queuing) { 1307 /* 1308 * Start out agressively and allow our 1309 * dynamic queue depth algorithm to take 1310 * care of the rest. 1311 */ 1312 dev->maxtags = usertags; 1313 dev->openings = dev->maxtags - dev->active; 1314 } 1315 if (dev->maxtags == 0) { 1316 /* 1317 * Queueing is disabled by the user. 1318 */ 1319 dev->openings = 1; 1320 } else if (alg == AHD_QUEUE_TAGGED) { 1321 dev->flags |= AHD_DEV_Q_TAGGED; 1322 if (aic79xx_periodic_otag != 0) 1323 dev->flags |= AHD_DEV_PERIODIC_OTAG; 1324 } else 1325 dev->flags |= AHD_DEV_Q_BASIC; 1326 } else { 1327 /* We can only have one opening. */ 1328 dev->maxtags = 0; 1329 dev->openings = 1 - dev->active; 1330 } 1331 1332 switch ((dev->flags & (AHD_DEV_Q_BASIC|AHD_DEV_Q_TAGGED))) { 1333 case AHD_DEV_Q_BASIC: 1334 scsi_set_tag_type(sdev, MSG_SIMPLE_TASK); 1335 scsi_activate_tcq(sdev, dev->openings + dev->active); 1336 break; 1337 case AHD_DEV_Q_TAGGED: 1338 scsi_set_tag_type(sdev, MSG_ORDERED_TASK); 1339 scsi_activate_tcq(sdev, dev->openings + dev->active); 1340 break; 1341 default: 1342 /* 1343 * We allow the OS to queue 2 untagged transactions to 1344 * us at any time even though we can only execute them 1345 * serially on the controller/device. This should 1346 * remove some latency. 1347 */ 1348 scsi_deactivate_tcq(sdev, 1); 1349 break; 1350 } 1351} 1352 1353int 1354ahd_platform_abort_scbs(struct ahd_softc *ahd, int target, char channel, 1355 int lun, u_int tag, role_t role, uint32_t status) 1356{ 1357 return 0; 1358} 1359 1360static u_int 1361ahd_linux_user_tagdepth(struct ahd_softc *ahd, struct ahd_devinfo *devinfo) 1362{ 1363 static int warned_user; 1364 u_int tags; 1365 1366 tags = 0; 1367 if ((ahd->user_discenable & devinfo->target_mask) != 0) { 1368 if (ahd->unit >= ARRAY_SIZE(aic79xx_tag_info)) { 1369 1370 if (warned_user == 0) { 1371 printf(KERN_WARNING 1372"aic79xx: WARNING: Insufficient tag_info instances\n" 1373"aic79xx: for installed controllers. Using defaults\n" 1374"aic79xx: Please update the aic79xx_tag_info array in\n" 1375"aic79xx: the aic79xx_osm.c source file.\n"); 1376 warned_user++; 1377 } 1378 tags = AHD_MAX_QUEUE; 1379 } else { 1380 adapter_tag_info_t *tag_info; 1381 1382 tag_info = &aic79xx_tag_info[ahd->unit]; 1383 tags = tag_info->tag_commands[devinfo->target_offset]; 1384 if (tags > AHD_MAX_QUEUE) 1385 tags = AHD_MAX_QUEUE; 1386 } 1387 } 1388 return (tags); 1389} 1390 1391/* 1392 * Determines the queue depth for a given device. 1393 */ 1394static void 1395ahd_linux_device_queue_depth(struct scsi_device *sdev) 1396{ 1397 struct ahd_devinfo devinfo; 1398 u_int tags; 1399 struct ahd_softc *ahd = *((struct ahd_softc **)sdev->host->hostdata); 1400 1401 ahd_compile_devinfo(&devinfo, 1402 ahd->our_id, 1403 sdev->sdev_target->id, sdev->lun, 1404 sdev->sdev_target->channel == 0 ? 'A' : 'B', 1405 ROLE_INITIATOR); 1406 tags = ahd_linux_user_tagdepth(ahd, &devinfo); 1407 if (tags != 0 && sdev->tagged_supported != 0) { 1408 1409 ahd_platform_set_tags(ahd, sdev, &devinfo, AHD_QUEUE_TAGGED); 1410 ahd_send_async(ahd, devinfo.channel, devinfo.target, 1411 devinfo.lun, AC_TRANSFER_NEG); 1412 ahd_print_devinfo(ahd, &devinfo); 1413 printf("Tagged Queuing enabled. Depth %d\n", tags); 1414 } else { 1415 ahd_platform_set_tags(ahd, sdev, &devinfo, AHD_QUEUE_NONE); 1416 ahd_send_async(ahd, devinfo.channel, devinfo.target, 1417 devinfo.lun, AC_TRANSFER_NEG); 1418 } 1419} 1420 1421static int 1422ahd_linux_run_command(struct ahd_softc *ahd, struct ahd_linux_device *dev, 1423 struct scsi_cmnd *cmd) 1424{ 1425 struct scb *scb; 1426 struct hardware_scb *hscb; 1427 struct ahd_initiator_tinfo *tinfo; 1428 struct ahd_tmode_tstate *tstate; 1429 u_int col_idx; 1430 uint16_t mask; 1431 unsigned long flags; 1432 1433 ahd_lock(ahd, &flags); 1434 1435 /* 1436 * Get an scb to use. 1437 */ 1438 tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id, 1439 cmd->device->id, &tstate); 1440 if ((dev->flags & (AHD_DEV_Q_TAGGED|AHD_DEV_Q_BASIC)) == 0 1441 || (tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0) { 1442 col_idx = AHD_NEVER_COL_IDX; 1443 } else { 1444 col_idx = AHD_BUILD_COL_IDX(cmd->device->id, 1445 cmd->device->lun); 1446 } 1447 if ((scb = ahd_get_scb(ahd, col_idx)) == NULL) { 1448 ahd->flags |= AHD_RESOURCE_SHORTAGE; 1449 ahd_unlock(ahd, &flags); 1450 return SCSI_MLQUEUE_HOST_BUSY; 1451 } 1452 1453 scb->io_ctx = cmd; 1454 scb->platform_data->dev = dev; 1455 hscb = scb->hscb; 1456 cmd->host_scribble = (char *)scb; 1457 1458 /* 1459 * Fill out basics of the HSCB. 1460 */ 1461 hscb->control = 0; 1462 hscb->scsiid = BUILD_SCSIID(ahd, cmd); 1463 hscb->lun = cmd->device->lun; 1464 scb->hscb->task_management = 0; 1465 mask = SCB_GET_TARGET_MASK(ahd, scb); 1466 1467 if ((ahd->user_discenable & mask) != 0) 1468 hscb->control |= DISCENB; 1469 1470 if ((tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0) 1471 scb->flags |= SCB_PACKETIZED; 1472 1473 if ((tstate->auto_negotiate & mask) != 0) { 1474 scb->flags |= SCB_AUTO_NEGOTIATE; 1475 scb->hscb->control |= MK_MESSAGE; 1476 } 1477 1478 if ((dev->flags & (AHD_DEV_Q_TAGGED|AHD_DEV_Q_BASIC)) != 0) { 1479 int msg_bytes; 1480 uint8_t tag_msgs[2]; 1481 1482 msg_bytes = scsi_populate_tag_msg(cmd, tag_msgs); 1483 if (msg_bytes && tag_msgs[0] != MSG_SIMPLE_TASK) { 1484 hscb->control |= tag_msgs[0]; 1485 if (tag_msgs[0] == MSG_ORDERED_TASK) 1486 dev->commands_since_idle_or_otag = 0; 1487 } else 1488 if (dev->commands_since_idle_or_otag == AHD_OTAG_THRESH 1489 && (dev->flags & AHD_DEV_Q_TAGGED) != 0) { 1490 hscb->control |= MSG_ORDERED_TASK; 1491 dev->commands_since_idle_or_otag = 0; 1492 } else { 1493 hscb->control |= MSG_SIMPLE_TASK; 1494 } 1495 } 1496 1497 hscb->cdb_len = cmd->cmd_len; 1498 memcpy(hscb->shared_data.idata.cdb, cmd->cmnd, hscb->cdb_len); 1499 1500 scb->platform_data->xfer_len = 0; 1501 ahd_set_residual(scb, 0); 1502 ahd_set_sense_residual(scb, 0); 1503 scb->sg_count = 0; 1504 if (cmd->use_sg != 0) { 1505 void *sg; 1506 struct scatterlist *cur_seg; 1507 u_int nseg; 1508 int dir; 1509 1510 cur_seg = (struct scatterlist *)cmd->request_buffer; 1511 dir = cmd->sc_data_direction; 1512 nseg = pci_map_sg(ahd->dev_softc, cur_seg, 1513 cmd->use_sg, dir); 1514 scb->platform_data->xfer_len = 0; 1515 for (sg = scb->sg_list; nseg > 0; nseg--, cur_seg++) { 1516 dma_addr_t addr; 1517 bus_size_t len; 1518 1519 addr = sg_dma_address(cur_seg); 1520 len = sg_dma_len(cur_seg); 1521 scb->platform_data->xfer_len += len; 1522 sg = ahd_sg_setup(ahd, scb, sg, addr, len, 1523 /*last*/nseg == 1); 1524 } 1525 } else if (cmd->request_bufflen != 0) { 1526 void *sg; 1527 dma_addr_t addr; 1528 int dir; 1529 1530 sg = scb->sg_list; 1531 dir = cmd->sc_data_direction; 1532 addr = pci_map_single(ahd->dev_softc, 1533 cmd->request_buffer, 1534 cmd->request_bufflen, dir); 1535 scb->platform_data->xfer_len = cmd->request_bufflen; 1536 scb->platform_data->buf_busaddr = addr; 1537 sg = ahd_sg_setup(ahd, scb, sg, addr, 1538 cmd->request_bufflen, /*last*/TRUE); 1539 } 1540 1541 LIST_INSERT_HEAD(&ahd->pending_scbs, scb, pending_links); 1542 dev->openings--; 1543 dev->active++; 1544 dev->commands_issued++; 1545 1546 if ((dev->flags & AHD_DEV_PERIODIC_OTAG) != 0) 1547 dev->commands_since_idle_or_otag++; 1548 scb->flags |= SCB_ACTIVE; 1549 ahd_queue_scb(ahd, scb); 1550 1551 ahd_unlock(ahd, &flags); 1552 1553 return 0; 1554} 1555 1556/* 1557 * SCSI controller interrupt handler. 1558 */ 1559irqreturn_t 1560ahd_linux_isr(int irq, void *dev_id) 1561{ 1562 struct ahd_softc *ahd; 1563 u_long flags; 1564 int ours; 1565 1566 ahd = (struct ahd_softc *) dev_id; 1567 ahd_lock(ahd, &flags); 1568 ours = ahd_intr(ahd); 1569 ahd_unlock(ahd, &flags); 1570 return IRQ_RETVAL(ours); 1571} 1572 1573void 1574ahd_send_async(struct ahd_softc *ahd, char channel, 1575 u_int target, u_int lun, ac_code code) 1576{ 1577 switch (code) { 1578 case AC_TRANSFER_NEG: 1579 { 1580 char buf[80]; 1581 struct scsi_target *starget; 1582 struct info_str info; 1583 struct ahd_initiator_tinfo *tinfo; 1584 struct ahd_tmode_tstate *tstate; 1585 unsigned int target_ppr_options; 1586 1587 BUG_ON(target == CAM_TARGET_WILDCARD); 1588 1589 info.buffer = buf; 1590 info.length = sizeof(buf); 1591 info.offset = 0; 1592 info.pos = 0; 1593 tinfo = ahd_fetch_transinfo(ahd, channel, ahd->our_id, 1594 target, &tstate); 1595 1596 /* 1597 * Don't bother reporting results while 1598 * negotiations are still pending. 1599 */ 1600 if (tinfo->curr.period != tinfo->goal.period 1601 || tinfo->curr.width != tinfo->goal.width 1602 || tinfo->curr.offset != tinfo->goal.offset 1603 || tinfo->curr.ppr_options != tinfo->goal.ppr_options) 1604 if (bootverbose == 0) 1605 break; 1606 1607 /* 1608 * Don't bother reporting results that 1609 * are identical to those last reported. 1610 */ 1611 starget = ahd->platform_data->starget[target]; 1612 if (starget == NULL) 1613 break; 1614 1615 target_ppr_options = 1616 (spi_dt(starget) ? MSG_EXT_PPR_DT_REQ : 0) 1617 + (spi_qas(starget) ? MSG_EXT_PPR_QAS_REQ : 0) 1618 + (spi_iu(starget) ? MSG_EXT_PPR_IU_REQ : 0) 1619 + (spi_rd_strm(starget) ? MSG_EXT_PPR_RD_STRM : 0) 1620 + (spi_pcomp_en(starget) ? MSG_EXT_PPR_PCOMP_EN : 0) 1621 + (spi_rti(starget) ? MSG_EXT_PPR_RTI : 0) 1622 + (spi_wr_flow(starget) ? MSG_EXT_PPR_WR_FLOW : 0) 1623 + (spi_hold_mcs(starget) ? MSG_EXT_PPR_HOLD_MCS : 0); 1624 1625 if (tinfo->curr.period == spi_period(starget) 1626 && tinfo->curr.width == spi_width(starget) 1627 && tinfo->curr.offset == spi_offset(starget) 1628 && tinfo->curr.ppr_options == target_ppr_options) 1629 if (bootverbose == 0) 1630 break; 1631 1632 spi_period(starget) = tinfo->curr.period; 1633 spi_width(starget) = tinfo->curr.width; 1634 spi_offset(starget) = tinfo->curr.offset; 1635 spi_dt(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_DT_REQ ? 1 : 0; 1636 spi_qas(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_QAS_REQ ? 1 : 0; 1637 spi_iu(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ ? 1 : 0; 1638 spi_rd_strm(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_RD_STRM ? 1 : 0; 1639 spi_pcomp_en(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_PCOMP_EN ? 1 : 0; 1640 spi_rti(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_RTI ? 1 : 0; 1641 spi_wr_flow(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_WR_FLOW ? 1 : 0; 1642 spi_hold_mcs(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_HOLD_MCS ? 1 : 0; 1643 spi_display_xfer_agreement(starget); 1644 break; 1645 } 1646 case AC_SENT_BDR: 1647 { 1648 WARN_ON(lun != CAM_LUN_WILDCARD); 1649 scsi_report_device_reset(ahd->platform_data->host, 1650 channel - 'A', target); 1651 break; 1652 } 1653 case AC_BUS_RESET: 1654 if (ahd->platform_data->host != NULL) { 1655 scsi_report_bus_reset(ahd->platform_data->host, 1656 channel - 'A'); 1657 } 1658 break; 1659 default: 1660 panic("ahd_send_async: Unexpected async event"); 1661 } 1662} 1663 1664/* 1665 * Calls the higher level scsi done function and frees the scb. 1666 */ 1667void 1668ahd_done(struct ahd_softc *ahd, struct scb *scb) 1669{ 1670 struct scsi_cmnd *cmd; 1671 struct ahd_linux_device *dev; 1672 1673 if ((scb->flags & SCB_ACTIVE) == 0) { 1674 printf("SCB %d done'd twice\n", SCB_GET_TAG(scb)); 1675 ahd_dump_card_state(ahd); 1676 panic("Stopping for safety"); 1677 } 1678 LIST_REMOVE(scb, pending_links); 1679 cmd = scb->io_ctx; 1680 dev = scb->platform_data->dev; 1681 dev->active--; 1682 dev->openings++; 1683 if ((cmd->result & (CAM_DEV_QFRZN << 16)) != 0) { 1684 cmd->result &= ~(CAM_DEV_QFRZN << 16); 1685 dev->qfrozen--; 1686 } 1687 ahd_linux_unmap_scb(ahd, scb); 1688 1689 /* 1690 * Guard against stale sense data. 1691 * The Linux mid-layer assumes that sense 1692 * was retrieved anytime the first byte of 1693 * the sense buffer looks "sane". 1694 */ 1695 cmd->sense_buffer[0] = 0; 1696 if (ahd_get_transaction_status(scb) == CAM_REQ_INPROG) { 1697 uint32_t amount_xferred; 1698 1699 amount_xferred = 1700 ahd_get_transfer_length(scb) - ahd_get_residual(scb); 1701 if ((scb->flags & SCB_TRANSMISSION_ERROR) != 0) { 1702#ifdef AHD_DEBUG 1703 if ((ahd_debug & AHD_SHOW_MISC) != 0) { 1704 ahd_print_path(ahd, scb); 1705 printf("Set CAM_UNCOR_PARITY\n"); 1706 } 1707#endif 1708 ahd_set_transaction_status(scb, CAM_UNCOR_PARITY); 1709#ifdef AHD_REPORT_UNDERFLOWS 1710 /* 1711 * This code is disabled by default as some 1712 * clients of the SCSI system do not properly 1713 * initialize the underflow parameter. This 1714 * results in spurious termination of commands 1715 * that complete as expected (e.g. underflow is 1716 * allowed as command can return variable amounts 1717 * of data. 1718 */ 1719 } else if (amount_xferred < scb->io_ctx->underflow) { 1720 u_int i; 1721 1722 ahd_print_path(ahd, scb); 1723 printf("CDB:"); 1724 for (i = 0; i < scb->io_ctx->cmd_len; i++) 1725 printf(" 0x%x", scb->io_ctx->cmnd[i]); 1726 printf("\n"); 1727 ahd_print_path(ahd, scb); 1728 printf("Saw underflow (%ld of %ld bytes). " 1729 "Treated as error\n", 1730 ahd_get_residual(scb), 1731 ahd_get_transfer_length(scb)); 1732 ahd_set_transaction_status(scb, CAM_DATA_RUN_ERR); 1733#endif 1734 } else { 1735 ahd_set_transaction_status(scb, CAM_REQ_CMP); 1736 } 1737 } else if (ahd_get_transaction_status(scb) == CAM_SCSI_STATUS_ERROR) { 1738 ahd_linux_handle_scsi_status(ahd, cmd->device, scb); 1739 } 1740 1741 if (dev->openings == 1 1742 && ahd_get_transaction_status(scb) == CAM_REQ_CMP 1743 && ahd_get_scsi_status(scb) != SCSI_STATUS_QUEUE_FULL) 1744 dev->tag_success_count++; 1745 /* 1746 * Some devices deal with temporary internal resource 1747 * shortages by returning queue full. When the queue 1748 * full occurrs, we throttle back. Slowly try to get 1749 * back to our previous queue depth. 1750 */ 1751 if ((dev->openings + dev->active) < dev->maxtags 1752 && dev->tag_success_count > AHD_TAG_SUCCESS_INTERVAL) { 1753 dev->tag_success_count = 0; 1754 dev->openings++; 1755 } 1756 1757 if (dev->active == 0) 1758 dev->commands_since_idle_or_otag = 0; 1759 1760 if ((scb->flags & SCB_RECOVERY_SCB) != 0) { 1761 printf("Recovery SCB completes\n"); 1762 if (ahd_get_transaction_status(scb) == CAM_BDR_SENT 1763 || ahd_get_transaction_status(scb) == CAM_REQ_ABORTED) 1764 ahd_set_transaction_status(scb, CAM_CMD_TIMEOUT); 1765 1766 if (ahd->platform_data->eh_done) 1767 complete(ahd->platform_data->eh_done); 1768 } 1769 1770 ahd_free_scb(ahd, scb); 1771 ahd_linux_queue_cmd_complete(ahd, cmd); 1772} 1773 1774static void 1775ahd_linux_handle_scsi_status(struct ahd_softc *ahd, 1776 struct scsi_device *sdev, struct scb *scb) 1777{ 1778 struct ahd_devinfo devinfo; 1779 struct ahd_linux_device *dev = scsi_transport_device_data(sdev); 1780 1781 ahd_compile_devinfo(&devinfo, 1782 ahd->our_id, 1783 sdev->sdev_target->id, sdev->lun, 1784 sdev->sdev_target->channel == 0 ? 'A' : 'B', 1785 ROLE_INITIATOR); 1786 1787 /* 1788 * We don't currently trust the mid-layer to 1789 * properly deal with queue full or busy. So, 1790 * when one occurs, we tell the mid-layer to 1791 * unconditionally requeue the command to us 1792 * so that we can retry it ourselves. We also 1793 * implement our own throttling mechanism so 1794 * we don't clobber the device with too many 1795 * commands. 1796 */ 1797 switch (ahd_get_scsi_status(scb)) { 1798 default: 1799 break; 1800 case SCSI_STATUS_CHECK_COND: 1801 case SCSI_STATUS_CMD_TERMINATED: 1802 { 1803 struct scsi_cmnd *cmd; 1804 1805 /* 1806 * Copy sense information to the OS's cmd 1807 * structure if it is available. 1808 */ 1809 cmd = scb->io_ctx; 1810 if ((scb->flags & (SCB_SENSE|SCB_PKT_SENSE)) != 0) { 1811 struct scsi_status_iu_header *siu; 1812 u_int sense_size; 1813 u_int sense_offset; 1814 1815 if (scb->flags & SCB_SENSE) { 1816 sense_size = MIN(sizeof(struct scsi_sense_data) 1817 - ahd_get_sense_residual(scb), 1818 sizeof(cmd->sense_buffer)); 1819 sense_offset = 0; 1820 } else { 1821 /* 1822 * Copy only the sense data into the provided 1823 * buffer. 1824 */ 1825 siu = (struct scsi_status_iu_header *) 1826 scb->sense_data; 1827 sense_size = MIN(scsi_4btoul(siu->sense_length), 1828 sizeof(cmd->sense_buffer)); 1829 sense_offset = SIU_SENSE_OFFSET(siu); 1830 } 1831 1832 memset(cmd->sense_buffer, 0, sizeof(cmd->sense_buffer)); 1833 memcpy(cmd->sense_buffer, 1834 ahd_get_sense_buf(ahd, scb) 1835 + sense_offset, sense_size); 1836 cmd->result |= (DRIVER_SENSE << 24); 1837 1838#ifdef AHD_DEBUG 1839 if (ahd_debug & AHD_SHOW_SENSE) { 1840 int i; 1841 1842 printf("Copied %d bytes of sense data at %d:", 1843 sense_size, sense_offset); 1844 for (i = 0; i < sense_size; i++) { 1845 if ((i & 0xF) == 0) 1846 printf("\n"); 1847 printf("0x%x ", cmd->sense_buffer[i]); 1848 } 1849 printf("\n"); 1850 } 1851#endif 1852 } 1853 break; 1854 } 1855 case SCSI_STATUS_QUEUE_FULL: 1856 /* 1857 * By the time the core driver has returned this 1858 * command, all other commands that were queued 1859 * to us but not the device have been returned. 1860 * This ensures that dev->active is equal to 1861 * the number of commands actually queued to 1862 * the device. 1863 */ 1864 dev->tag_success_count = 0; 1865 if (dev->active != 0) { 1866 /* 1867 * Drop our opening count to the number 1868 * of commands currently outstanding. 1869 */ 1870 dev->openings = 0; 1871#ifdef AHD_DEBUG 1872 if ((ahd_debug & AHD_SHOW_QFULL) != 0) { 1873 ahd_print_path(ahd, scb); 1874 printf("Dropping tag count to %d\n", 1875 dev->active); 1876 } 1877#endif 1878 if (dev->active == dev->tags_on_last_queuefull) { 1879 1880 dev->last_queuefull_same_count++; 1881 /* 1882 * If we repeatedly see a queue full 1883 * at the same queue depth, this 1884 * device has a fixed number of tag 1885 * slots. Lock in this tag depth 1886 * so we stop seeing queue fulls from 1887 * this device. 1888 */ 1889 if (dev->last_queuefull_same_count 1890 == AHD_LOCK_TAGS_COUNT) { 1891 dev->maxtags = dev->active; 1892 ahd_print_path(ahd, scb); 1893 printf("Locking max tag count at %d\n", 1894 dev->active); 1895 } 1896 } else { 1897 dev->tags_on_last_queuefull = dev->active; 1898 dev->last_queuefull_same_count = 0; 1899 } 1900 ahd_set_transaction_status(scb, CAM_REQUEUE_REQ); 1901 ahd_set_scsi_status(scb, SCSI_STATUS_OK); 1902 ahd_platform_set_tags(ahd, sdev, &devinfo, 1903 (dev->flags & AHD_DEV_Q_BASIC) 1904 ? AHD_QUEUE_BASIC : AHD_QUEUE_TAGGED); 1905 break; 1906 } 1907 /* 1908 * Drop down to a single opening, and treat this 1909 * as if the target returned BUSY SCSI status. 1910 */ 1911 dev->openings = 1; 1912 ahd_platform_set_tags(ahd, sdev, &devinfo, 1913 (dev->flags & AHD_DEV_Q_BASIC) 1914 ? AHD_QUEUE_BASIC : AHD_QUEUE_TAGGED); 1915 ahd_set_scsi_status(scb, SCSI_STATUS_BUSY); 1916 } 1917} 1918 1919static void 1920ahd_linux_queue_cmd_complete(struct ahd_softc *ahd, struct scsi_cmnd *cmd) 1921{ 1922 int status; 1923 int new_status = DID_OK; 1924 int do_fallback = 0; 1925 int scsi_status; 1926 1927 /* 1928 * Map CAM error codes into Linux Error codes. We 1929 * avoid the conversion so that the DV code has the 1930 * full error information available when making 1931 * state change decisions. 1932 */ 1933 1934 status = ahd_cmd_get_transaction_status(cmd); 1935 switch (status) { 1936 case CAM_REQ_INPROG: 1937 case CAM_REQ_CMP: 1938 new_status = DID_OK; 1939 break; 1940 case CAM_AUTOSENSE_FAIL: 1941 new_status = DID_ERROR; 1942 /* Fallthrough */ 1943 case CAM_SCSI_STATUS_ERROR: 1944 scsi_status = ahd_cmd_get_scsi_status(cmd); 1945 1946 switch(scsi_status) { 1947 case SCSI_STATUS_CMD_TERMINATED: 1948 case SCSI_STATUS_CHECK_COND: 1949 if ((cmd->result >> 24) != DRIVER_SENSE) { 1950 do_fallback = 1; 1951 } else { 1952 struct scsi_sense_data *sense; 1953 1954 sense = (struct scsi_sense_data *) 1955 &cmd->sense_buffer; 1956 if (sense->extra_len >= 5 && 1957 (sense->add_sense_code == 0x47 1958 || sense->add_sense_code == 0x48)) 1959 do_fallback = 1; 1960 } 1961 break; 1962 default: 1963 break; 1964 } 1965 break; 1966 case CAM_REQ_ABORTED: 1967 new_status = DID_ABORT; 1968 break; 1969 case CAM_BUSY: 1970 new_status = DID_BUS_BUSY; 1971 break; 1972 case CAM_REQ_INVALID: 1973 case CAM_PATH_INVALID: 1974 new_status = DID_BAD_TARGET; 1975 break; 1976 case CAM_SEL_TIMEOUT: 1977 new_status = DID_NO_CONNECT; 1978 break; 1979 case CAM_SCSI_BUS_RESET: 1980 case CAM_BDR_SENT: 1981 new_status = DID_RESET; 1982 break; 1983 case CAM_UNCOR_PARITY: 1984 new_status = DID_PARITY; 1985 do_fallback = 1; 1986 break; 1987 case CAM_CMD_TIMEOUT: 1988 new_status = DID_TIME_OUT; 1989 do_fallback = 1; 1990 break; 1991 case CAM_REQ_CMP_ERR: 1992 case CAM_UNEXP_BUSFREE: 1993 case CAM_DATA_RUN_ERR: 1994 new_status = DID_ERROR; 1995 do_fallback = 1; 1996 break; 1997 case CAM_UA_ABORT: 1998 case CAM_NO_HBA: 1999 case CAM_SEQUENCE_FAIL: 2000 case CAM_CCB_LEN_ERR: 2001 case CAM_PROVIDE_FAIL: 2002 case CAM_REQ_TERMIO: 2003 case CAM_UNREC_HBA_ERROR: 2004 case CAM_REQ_TOO_BIG: 2005 new_status = DID_ERROR; 2006 break; 2007 case CAM_REQUEUE_REQ: 2008 new_status = DID_REQUEUE; 2009 break; 2010 default: 2011 /* We should never get here */ 2012 new_status = DID_ERROR; 2013 break; 2014 } 2015 2016 if (do_fallback) { 2017 printf("%s: device overrun (status %x) on %d:%d:%d\n", 2018 ahd_name(ahd), status, cmd->device->channel, 2019 cmd->device->id, cmd->device->lun); 2020 } 2021 2022 ahd_cmd_set_transaction_status(cmd, new_status); 2023 2024 cmd->scsi_done(cmd); 2025} 2026 2027void 2028ahd_freeze_simq(struct ahd_softc *ahd) 2029{ 2030 scsi_block_requests(ahd->platform_data->host); 2031} 2032 2033void 2034ahd_release_simq(struct ahd_softc *ahd) 2035{ 2036 scsi_unblock_requests(ahd->platform_data->host); 2037} 2038 2039static int 2040ahd_linux_queue_abort_cmd(struct scsi_cmnd *cmd) 2041{ 2042 struct ahd_softc *ahd; 2043 struct ahd_linux_device *dev; 2044 struct scb *pending_scb; 2045 u_int saved_scbptr; 2046 u_int active_scbptr; 2047 u_int last_phase; 2048 u_int saved_scsiid; 2049 u_int cdb_byte; 2050 int retval; 2051 int was_paused; 2052 int paused; 2053 int wait; 2054 int disconnected; 2055 ahd_mode_state saved_modes; 2056 unsigned long flags; 2057 2058 pending_scb = NULL; 2059 paused = FALSE; 2060 wait = FALSE; 2061 ahd = *(struct ahd_softc **)cmd->device->host->hostdata; 2062 2063 scmd_printk(KERN_INFO, cmd, 2064 "Attempting to queue an ABORT message:"); 2065 2066 printf("CDB:"); 2067 for (cdb_byte = 0; cdb_byte < cmd->cmd_len; cdb_byte++) 2068 printf(" 0x%x", cmd->cmnd[cdb_byte]); 2069 printf("\n"); 2070 2071 ahd_lock(ahd, &flags); 2072 2073 /* 2074 * First determine if we currently own this command. 2075 * Start by searching the device queue. If not found 2076 * there, check the pending_scb list. If not found 2077 * at all, and the system wanted us to just abort the 2078 * command, return success. 2079 */ 2080 dev = scsi_transport_device_data(cmd->device); 2081 2082 if (dev == NULL) { 2083 /* 2084 * No target device for this command exists, 2085 * so we must not still own the command. 2086 */ 2087 scmd_printk(KERN_INFO, cmd, "Is not an active device\n"); 2088 retval = SUCCESS; 2089 goto no_cmd; 2090 } 2091 2092 /* 2093 * See if we can find a matching cmd in the pending list. 2094 */ 2095 LIST_FOREACH(pending_scb, &ahd->pending_scbs, pending_links) { 2096 if (pending_scb->io_ctx == cmd) 2097 break; 2098 } 2099 2100 if (pending_scb == NULL) { 2101 scmd_printk(KERN_INFO, cmd, "Command not found\n"); 2102 goto no_cmd; 2103 } 2104 2105 if ((pending_scb->flags & SCB_RECOVERY_SCB) != 0) { 2106 /* 2107 * We can't queue two recovery actions using the same SCB 2108 */ 2109 retval = FAILED; 2110 goto done; 2111 } 2112 2113 /* 2114 * Ensure that the card doesn't do anything 2115 * behind our back. Also make sure that we 2116 * didn't "just" miss an interrupt that would 2117 * affect this cmd. 2118 */ 2119 was_paused = ahd_is_paused(ahd); 2120 ahd_pause_and_flushwork(ahd); 2121 paused = TRUE; 2122 2123 if ((pending_scb->flags & SCB_ACTIVE) == 0) { 2124 scmd_printk(KERN_INFO, cmd, "Command already completed\n"); 2125 goto no_cmd; 2126 } 2127 2128 printf("%s: At time of recovery, card was %spaused\n", 2129 ahd_name(ahd), was_paused ? "" : "not "); 2130 ahd_dump_card_state(ahd); 2131 2132 disconnected = TRUE; 2133 if (ahd_search_qinfifo(ahd, cmd->device->id, 2134 cmd->device->channel + 'A', 2135 cmd->device->lun, 2136 pending_scb->hscb->tag, 2137 ROLE_INITIATOR, CAM_REQ_ABORTED, 2138 SEARCH_COMPLETE) > 0) { 2139 printf("%s:%d:%d:%d: Cmd aborted from QINFIFO\n", 2140 ahd_name(ahd), cmd->device->channel, 2141 cmd->device->id, cmd->device->lun); 2142 retval = SUCCESS; 2143 goto done; 2144 } 2145 2146 saved_modes = ahd_save_modes(ahd); 2147 ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); 2148 last_phase = ahd_inb(ahd, LASTPHASE); 2149 saved_scbptr = ahd_get_scbptr(ahd); 2150 active_scbptr = saved_scbptr; 2151 if (disconnected && (ahd_inb(ahd, SEQ_FLAGS) & NOT_IDENTIFIED) == 0) { 2152 struct scb *bus_scb; 2153 2154 bus_scb = ahd_lookup_scb(ahd, active_scbptr); 2155 if (bus_scb == pending_scb) 2156 disconnected = FALSE; 2157 } 2158 2159 /* 2160 * At this point, pending_scb is the scb associated with the 2161 * passed in command. That command is currently active on the 2162 * bus or is in the disconnected state. 2163 */ 2164 saved_scsiid = ahd_inb(ahd, SAVED_SCSIID); 2165 if (last_phase != P_BUSFREE 2166 && SCB_GET_TAG(pending_scb) == active_scbptr) { 2167 2168 /* 2169 * We're active on the bus, so assert ATN 2170 * and hope that the target responds. 2171 */ 2172 pending_scb = ahd_lookup_scb(ahd, active_scbptr); 2173 pending_scb->flags |= SCB_RECOVERY_SCB|SCB_ABORT; 2174 ahd_outb(ahd, MSG_OUT, HOST_MSG); 2175 ahd_outb(ahd, SCSISIGO, last_phase|ATNO); 2176 scmd_printk(KERN_INFO, cmd, "Device is active, asserting ATN\n"); 2177 wait = TRUE; 2178 } else if (disconnected) { 2179 2180 /* 2181 * Actually re-queue this SCB in an attempt 2182 * to select the device before it reconnects. 2183 */ 2184 pending_scb->flags |= SCB_RECOVERY_SCB|SCB_ABORT; 2185 ahd_set_scbptr(ahd, SCB_GET_TAG(pending_scb)); 2186 pending_scb->hscb->cdb_len = 0; 2187 pending_scb->hscb->task_attribute = 0; 2188 pending_scb->hscb->task_management = SIU_TASKMGMT_ABORT_TASK; 2189 2190 if ((pending_scb->flags & SCB_PACKETIZED) != 0) { 2191 /* 2192 * Mark the SCB has having an outstanding 2193 * task management function. Should the command 2194 * complete normally before the task management 2195 * function can be sent, the host will be notified 2196 * to abort our requeued SCB. 2197 */ 2198 ahd_outb(ahd, SCB_TASK_MANAGEMENT, 2199 pending_scb->hscb->task_management); 2200 } else { 2201 /* 2202 * If non-packetized, set the MK_MESSAGE control 2203 * bit indicating that we desire to send a message. 2204 * We also set the disconnected flag since there is 2205 * no guarantee that our SCB control byte matches 2206 * the version on the card. We don't want the 2207 * sequencer to abort the command thinking an 2208 * unsolicited reselection occurred. 2209 */ 2210 pending_scb->hscb->control |= MK_MESSAGE|DISCONNECTED; 2211 2212 /* 2213 * The sequencer will never re-reference the 2214 * in-core SCB. To make sure we are notified 2215 * during reslection, set the MK_MESSAGE flag in 2216 * the card's copy of the SCB. 2217 */ 2218 ahd_outb(ahd, SCB_CONTROL, 2219 ahd_inb(ahd, SCB_CONTROL)|MK_MESSAGE); 2220 } 2221 2222 /* 2223 * Clear out any entries in the QINFIFO first 2224 * so we are the next SCB for this target 2225 * to run. 2226 */ 2227 ahd_search_qinfifo(ahd, cmd->device->id, 2228 cmd->device->channel + 'A', cmd->device->lun, 2229 SCB_LIST_NULL, ROLE_INITIATOR, 2230 CAM_REQUEUE_REQ, SEARCH_COMPLETE); 2231 ahd_qinfifo_requeue_tail(ahd, pending_scb); 2232 ahd_set_scbptr(ahd, saved_scbptr); 2233 ahd_print_path(ahd, pending_scb); 2234 printf("Device is disconnected, re-queuing SCB\n"); 2235 wait = TRUE; 2236 } else { 2237 scmd_printk(KERN_INFO, cmd, "Unable to deliver message\n"); 2238 retval = FAILED; 2239 goto done; 2240 } 2241 2242no_cmd: 2243 /* 2244 * Our assumption is that if we don't have the command, no 2245 * recovery action was required, so we return success. Again, 2246 * the semantics of the mid-layer recovery engine are not 2247 * well defined, so this may change in time. 2248 */ 2249 retval = SUCCESS; 2250done: 2251 if (paused) 2252 ahd_unpause(ahd); 2253 if (wait) { 2254 DECLARE_COMPLETION_ONSTACK(done); 2255 2256 ahd->platform_data->eh_done = &done; 2257 ahd_unlock(ahd, &flags); 2258 2259 printf("%s: Recovery code sleeping\n", ahd_name(ahd)); 2260 if (!wait_for_completion_timeout(&done, 5 * HZ)) { 2261 ahd_lock(ahd, &flags); 2262 ahd->platform_data->eh_done = NULL; 2263 ahd_unlock(ahd, &flags); 2264 printf("%s: Timer Expired (active %d)\n", 2265 ahd_name(ahd), dev->active); 2266 retval = FAILED; 2267 } 2268 printf("Recovery code awake\n"); 2269 } else 2270 ahd_unlock(ahd, &flags); 2271 2272 if (retval != SUCCESS) 2273 printf("%s: Command abort returning 0x%x\n", 2274 ahd_name(ahd), retval); 2275 2276 return retval; 2277} 2278 2279static void ahd_linux_set_width(struct scsi_target *starget, int width) 2280{ 2281 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 2282 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); 2283 struct ahd_devinfo devinfo; 2284 unsigned long flags; 2285 2286 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, 2287 starget->channel + 'A', ROLE_INITIATOR); 2288 ahd_lock(ahd, &flags); 2289 ahd_set_width(ahd, &devinfo, width, AHD_TRANS_GOAL, FALSE); 2290 ahd_unlock(ahd, &flags); 2291} 2292 2293static void ahd_linux_set_period(struct scsi_target *starget, int period) 2294{ 2295 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 2296 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); 2297 struct ahd_tmode_tstate *tstate; 2298 struct ahd_initiator_tinfo *tinfo 2299 = ahd_fetch_transinfo(ahd, 2300 starget->channel + 'A', 2301 shost->this_id, starget->id, &tstate); 2302 struct ahd_devinfo devinfo; 2303 unsigned int ppr_options = tinfo->goal.ppr_options; 2304 unsigned int dt; 2305 unsigned long flags; 2306 unsigned long offset = tinfo->goal.offset; 2307 2308#ifdef AHD_DEBUG 2309 if ((ahd_debug & AHD_SHOW_DV) != 0) 2310 printf("%s: set period to %d\n", ahd_name(ahd), period); 2311#endif 2312 if (offset == 0) 2313 offset = MAX_OFFSET; 2314 2315 if (period < 8) 2316 period = 8; 2317 if (period < 10) { 2318 ppr_options |= MSG_EXT_PPR_DT_REQ; 2319 if (period == 8) 2320 ppr_options |= MSG_EXT_PPR_IU_REQ; 2321 } 2322 2323 dt = ppr_options & MSG_EXT_PPR_DT_REQ; 2324 2325 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, 2326 starget->channel + 'A', ROLE_INITIATOR); 2327 2328 /* all PPR requests apart from QAS require wide transfers */ 2329 if (ppr_options & ~MSG_EXT_PPR_QAS_REQ) { 2330 if (spi_width(starget) == 0) 2331 ppr_options &= MSG_EXT_PPR_QAS_REQ; 2332 } 2333 2334 ahd_find_syncrate(ahd, &period, &ppr_options, 2335 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); 2336 2337 ahd_lock(ahd, &flags); 2338 ahd_set_syncrate(ahd, &devinfo, period, offset, 2339 ppr_options, AHD_TRANS_GOAL, FALSE); 2340 ahd_unlock(ahd, &flags); 2341} 2342 2343static void ahd_linux_set_offset(struct scsi_target *starget, int offset) 2344{ 2345 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 2346 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); 2347 struct ahd_tmode_tstate *tstate; 2348 struct ahd_initiator_tinfo *tinfo 2349 = ahd_fetch_transinfo(ahd, 2350 starget->channel + 'A', 2351 shost->this_id, starget->id, &tstate); 2352 struct ahd_devinfo devinfo; 2353 unsigned int ppr_options = 0; 2354 unsigned int period = 0; 2355 unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ; 2356 unsigned long flags; 2357 2358#ifdef AHD_DEBUG 2359 if ((ahd_debug & AHD_SHOW_DV) != 0) 2360 printf("%s: set offset to %d\n", ahd_name(ahd), offset); 2361#endif 2362 2363 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, 2364 starget->channel + 'A', ROLE_INITIATOR); 2365 if (offset != 0) { 2366 period = tinfo->goal.period; 2367 ppr_options = tinfo->goal.ppr_options; 2368 ahd_find_syncrate(ahd, &period, &ppr_options, 2369 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); 2370 } 2371 2372 ahd_lock(ahd, &flags); 2373 ahd_set_syncrate(ahd, &devinfo, period, offset, ppr_options, 2374 AHD_TRANS_GOAL, FALSE); 2375 ahd_unlock(ahd, &flags); 2376} 2377 2378static void ahd_linux_set_dt(struct scsi_target *starget, int dt) 2379{ 2380 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 2381 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); 2382 struct ahd_tmode_tstate *tstate; 2383 struct ahd_initiator_tinfo *tinfo 2384 = ahd_fetch_transinfo(ahd, 2385 starget->channel + 'A', 2386 shost->this_id, starget->id, &tstate); 2387 struct ahd_devinfo devinfo; 2388 unsigned int ppr_options = tinfo->goal.ppr_options 2389 & ~MSG_EXT_PPR_DT_REQ; 2390 unsigned int period = tinfo->goal.period; 2391 unsigned int width = tinfo->goal.width; 2392 unsigned long flags; 2393 2394#ifdef AHD_DEBUG 2395 if ((ahd_debug & AHD_SHOW_DV) != 0) 2396 printf("%s: %s DT\n", ahd_name(ahd), 2397 dt ? "enabling" : "disabling"); 2398#endif 2399 if (dt) { 2400 ppr_options |= MSG_EXT_PPR_DT_REQ; 2401 if (!width) 2402 ahd_linux_set_width(starget, 1); 2403 } else { 2404 if (period <= 9) 2405 period = 10; /* If resetting DT, period must be >= 25ns */ 2406 /* IU is invalid without DT set */ 2407 ppr_options &= ~MSG_EXT_PPR_IU_REQ; 2408 } 2409 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, 2410 starget->channel + 'A', ROLE_INITIATOR); 2411 ahd_find_syncrate(ahd, &period, &ppr_options, 2412 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); 2413 2414 ahd_lock(ahd, &flags); 2415 ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, 2416 ppr_options, AHD_TRANS_GOAL, FALSE); 2417 ahd_unlock(ahd, &flags); 2418} 2419 2420static void ahd_linux_set_qas(struct scsi_target *starget, int qas) 2421{ 2422 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 2423 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); 2424 struct ahd_tmode_tstate *tstate; 2425 struct ahd_initiator_tinfo *tinfo 2426 = ahd_fetch_transinfo(ahd, 2427 starget->channel + 'A', 2428 shost->this_id, starget->id, &tstate); 2429 struct ahd_devinfo devinfo; 2430 unsigned int ppr_options = tinfo->goal.ppr_options 2431 & ~MSG_EXT_PPR_QAS_REQ; 2432 unsigned int period = tinfo->goal.period; 2433 unsigned int dt; 2434 unsigned long flags; 2435 2436#ifdef AHD_DEBUG 2437 if ((ahd_debug & AHD_SHOW_DV) != 0) 2438 printf("%s: %s QAS\n", ahd_name(ahd), 2439 qas ? "enabling" : "disabling"); 2440#endif 2441 2442 if (qas) { 2443 ppr_options |= MSG_EXT_PPR_QAS_REQ; 2444 } 2445 2446 dt = ppr_options & MSG_EXT_PPR_DT_REQ; 2447 2448 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, 2449 starget->channel + 'A', ROLE_INITIATOR); 2450 ahd_find_syncrate(ahd, &period, &ppr_options, 2451 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); 2452 2453 ahd_lock(ahd, &flags); 2454 ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, 2455 ppr_options, AHD_TRANS_GOAL, FALSE); 2456 ahd_unlock(ahd, &flags); 2457} 2458 2459static void ahd_linux_set_iu(struct scsi_target *starget, int iu) 2460{ 2461 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 2462 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); 2463 struct ahd_tmode_tstate *tstate; 2464 struct ahd_initiator_tinfo *tinfo 2465 = ahd_fetch_transinfo(ahd, 2466 starget->channel + 'A', 2467 shost->this_id, starget->id, &tstate); 2468 struct ahd_devinfo devinfo; 2469 unsigned int ppr_options = tinfo->goal.ppr_options 2470 & ~MSG_EXT_PPR_IU_REQ; 2471 unsigned int period = tinfo->goal.period; 2472 unsigned int dt; 2473 unsigned long flags; 2474 2475#ifdef AHD_DEBUG 2476 if ((ahd_debug & AHD_SHOW_DV) != 0) 2477 printf("%s: %s IU\n", ahd_name(ahd), 2478 iu ? "enabling" : "disabling"); 2479#endif 2480 2481 if (iu) { 2482 ppr_options |= MSG_EXT_PPR_IU_REQ; 2483 ppr_options |= MSG_EXT_PPR_DT_REQ; /* IU requires DT */ 2484 } 2485 2486 dt = ppr_options & MSG_EXT_PPR_DT_REQ; 2487 2488 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, 2489 starget->channel + 'A', ROLE_INITIATOR); 2490 ahd_find_syncrate(ahd, &period, &ppr_options, 2491 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); 2492 2493 ahd_lock(ahd, &flags); 2494 ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, 2495 ppr_options, AHD_TRANS_GOAL, FALSE); 2496 ahd_unlock(ahd, &flags); 2497} 2498 2499static void ahd_linux_set_rd_strm(struct scsi_target *starget, int rdstrm) 2500{ 2501 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 2502 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); 2503 struct ahd_tmode_tstate *tstate; 2504 struct ahd_initiator_tinfo *tinfo 2505 = ahd_fetch_transinfo(ahd, 2506 starget->channel + 'A', 2507 shost->this_id, starget->id, &tstate); 2508 struct ahd_devinfo devinfo; 2509 unsigned int ppr_options = tinfo->goal.ppr_options 2510 & ~MSG_EXT_PPR_RD_STRM; 2511 unsigned int period = tinfo->goal.period; 2512 unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ; 2513 unsigned long flags; 2514 2515#ifdef AHD_DEBUG 2516 if ((ahd_debug & AHD_SHOW_DV) != 0) 2517 printf("%s: %s Read Streaming\n", ahd_name(ahd), 2518 rdstrm ? "enabling" : "disabling"); 2519#endif 2520 2521 if (rdstrm) 2522 ppr_options |= MSG_EXT_PPR_RD_STRM; 2523 2524 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, 2525 starget->channel + 'A', ROLE_INITIATOR); 2526 ahd_find_syncrate(ahd, &period, &ppr_options, 2527 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); 2528 2529 ahd_lock(ahd, &flags); 2530 ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, 2531 ppr_options, AHD_TRANS_GOAL, FALSE); 2532 ahd_unlock(ahd, &flags); 2533} 2534 2535static void ahd_linux_set_wr_flow(struct scsi_target *starget, int wrflow) 2536{ 2537 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 2538 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); 2539 struct ahd_tmode_tstate *tstate; 2540 struct ahd_initiator_tinfo *tinfo 2541 = ahd_fetch_transinfo(ahd, 2542 starget->channel + 'A', 2543 shost->this_id, starget->id, &tstate); 2544 struct ahd_devinfo devinfo; 2545 unsigned int ppr_options = tinfo->goal.ppr_options 2546 & ~MSG_EXT_PPR_WR_FLOW; 2547 unsigned int period = tinfo->goal.period; 2548 unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ; 2549 unsigned long flags; 2550 2551#ifdef AHD_DEBUG 2552 if ((ahd_debug & AHD_SHOW_DV) != 0) 2553 printf("%s: %s Write Flow Control\n", ahd_name(ahd), 2554 wrflow ? "enabling" : "disabling"); 2555#endif 2556 2557 if (wrflow) 2558 ppr_options |= MSG_EXT_PPR_WR_FLOW; 2559 2560 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, 2561 starget->channel + 'A', ROLE_INITIATOR); 2562 ahd_find_syncrate(ahd, &period, &ppr_options, 2563 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); 2564 2565 ahd_lock(ahd, &flags); 2566 ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, 2567 ppr_options, AHD_TRANS_GOAL, FALSE); 2568 ahd_unlock(ahd, &flags); 2569} 2570 2571static void ahd_linux_set_rti(struct scsi_target *starget, int rti) 2572{ 2573 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 2574 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); 2575 struct ahd_tmode_tstate *tstate; 2576 struct ahd_initiator_tinfo *tinfo 2577 = ahd_fetch_transinfo(ahd, 2578 starget->channel + 'A', 2579 shost->this_id, starget->id, &tstate); 2580 struct ahd_devinfo devinfo; 2581 unsigned int ppr_options = tinfo->goal.ppr_options 2582 & ~MSG_EXT_PPR_RTI; 2583 unsigned int period = tinfo->goal.period; 2584 unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ; 2585 unsigned long flags; 2586 2587 if ((ahd->features & AHD_RTI) == 0) { 2588#ifdef AHD_DEBUG 2589 if ((ahd_debug & AHD_SHOW_DV) != 0) 2590 printf("%s: RTI not available\n", ahd_name(ahd)); 2591#endif 2592 return; 2593 } 2594 2595#ifdef AHD_DEBUG 2596 if ((ahd_debug & AHD_SHOW_DV) != 0) 2597 printf("%s: %s RTI\n", ahd_name(ahd), 2598 rti ? "enabling" : "disabling"); 2599#endif 2600 2601 if (rti) 2602 ppr_options |= MSG_EXT_PPR_RTI; 2603 2604 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, 2605 starget->channel + 'A', ROLE_INITIATOR); 2606 ahd_find_syncrate(ahd, &period, &ppr_options, 2607 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); 2608 2609 ahd_lock(ahd, &flags); 2610 ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, 2611 ppr_options, AHD_TRANS_GOAL, FALSE); 2612 ahd_unlock(ahd, &flags); 2613} 2614 2615static void ahd_linux_set_pcomp_en(struct scsi_target *starget, int pcomp) 2616{ 2617 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 2618 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); 2619 struct ahd_tmode_tstate *tstate; 2620 struct ahd_initiator_tinfo *tinfo 2621 = ahd_fetch_transinfo(ahd, 2622 starget->channel + 'A', 2623 shost->this_id, starget->id, &tstate); 2624 struct ahd_devinfo devinfo; 2625 unsigned int ppr_options = tinfo->goal.ppr_options 2626 & ~MSG_EXT_PPR_PCOMP_EN; 2627 unsigned int period = tinfo->goal.period; 2628 unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ; 2629 unsigned long flags; 2630 2631#ifdef AHD_DEBUG 2632 if ((ahd_debug & AHD_SHOW_DV) != 0) 2633 printf("%s: %s Precompensation\n", ahd_name(ahd), 2634 pcomp ? "Enable" : "Disable"); 2635#endif 2636 2637 if (pcomp) 2638 ppr_options |= MSG_EXT_PPR_PCOMP_EN; 2639 2640 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, 2641 starget->channel + 'A', ROLE_INITIATOR); 2642 ahd_find_syncrate(ahd, &period, &ppr_options, 2643 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); 2644 2645 ahd_lock(ahd, &flags); 2646 ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, 2647 ppr_options, AHD_TRANS_GOAL, FALSE); 2648 ahd_unlock(ahd, &flags); 2649} 2650 2651static void ahd_linux_set_hold_mcs(struct scsi_target *starget, int hold) 2652{ 2653 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 2654 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); 2655 struct ahd_tmode_tstate *tstate; 2656 struct ahd_initiator_tinfo *tinfo 2657 = ahd_fetch_transinfo(ahd, 2658 starget->channel + 'A', 2659 shost->this_id, starget->id, &tstate); 2660 struct ahd_devinfo devinfo; 2661 unsigned int ppr_options = tinfo->goal.ppr_options 2662 & ~MSG_EXT_PPR_HOLD_MCS; 2663 unsigned int period = tinfo->goal.period; 2664 unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ; 2665 unsigned long flags; 2666 2667 if (hold) 2668 ppr_options |= MSG_EXT_PPR_HOLD_MCS; 2669 2670 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, 2671 starget->channel + 'A', ROLE_INITIATOR); 2672 ahd_find_syncrate(ahd, &period, &ppr_options, 2673 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); 2674 2675 ahd_lock(ahd, &flags); 2676 ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, 2677 ppr_options, AHD_TRANS_GOAL, FALSE); 2678 ahd_unlock(ahd, &flags); 2679} 2680 2681 2682 2683static struct spi_function_template ahd_linux_transport_functions = { 2684 .set_offset = ahd_linux_set_offset, 2685 .show_offset = 1, 2686 .set_period = ahd_linux_set_period, 2687 .show_period = 1, 2688 .set_width = ahd_linux_set_width, 2689 .show_width = 1, 2690 .set_dt = ahd_linux_set_dt, 2691 .show_dt = 1, 2692 .set_iu = ahd_linux_set_iu, 2693 .show_iu = 1, 2694 .set_qas = ahd_linux_set_qas, 2695 .show_qas = 1, 2696 .set_rd_strm = ahd_linux_set_rd_strm, 2697 .show_rd_strm = 1, 2698 .set_wr_flow = ahd_linux_set_wr_flow, 2699 .show_wr_flow = 1, 2700 .set_rti = ahd_linux_set_rti, 2701 .show_rti = 1, 2702 .set_pcomp_en = ahd_linux_set_pcomp_en, 2703 .show_pcomp_en = 1, 2704 .set_hold_mcs = ahd_linux_set_hold_mcs, 2705 .show_hold_mcs = 1, 2706}; 2707 2708static int __init 2709ahd_linux_init(void) 2710{ 2711 int error = 0; 2712 2713 /* 2714 * If we've been passed any parameters, process them now. 2715 */ 2716 if (aic79xx) 2717 aic79xx_setup(aic79xx); 2718 2719 ahd_linux_transport_template = 2720 spi_attach_transport(&ahd_linux_transport_functions); 2721 if (!ahd_linux_transport_template) 2722 return -ENODEV; 2723 2724 scsi_transport_reserve_device(ahd_linux_transport_template, 2725 sizeof(struct ahd_linux_device)); 2726 2727 error = ahd_linux_pci_init(); 2728 if (error) 2729 spi_release_transport(ahd_linux_transport_template); 2730 return error; 2731} 2732 2733static void __exit 2734ahd_linux_exit(void) 2735{ 2736 ahd_linux_pci_exit(); 2737 spi_release_transport(ahd_linux_transport_template); 2738} 2739 2740module_init(ahd_linux_init); 2741module_exit(ahd_linux_exit); 2742