aic79xx_osm.c revision 6d07cb71fdacc710fd9816cddb5c2df0f7bd96b4
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 .max_sectors = 8192, 777 .cmd_per_lun = 2, 778 .use_clustering = ENABLE_CLUSTERING, 779 .slave_alloc = ahd_linux_slave_alloc, 780 .slave_configure = ahd_linux_slave_configure, 781 .target_alloc = ahd_linux_target_alloc, 782 .target_destroy = ahd_linux_target_destroy, 783}; 784 785/******************************** Bus DMA *************************************/ 786int 787ahd_dma_tag_create(struct ahd_softc *ahd, bus_dma_tag_t parent, 788 bus_size_t alignment, bus_size_t boundary, 789 dma_addr_t lowaddr, dma_addr_t highaddr, 790 bus_dma_filter_t *filter, void *filterarg, 791 bus_size_t maxsize, int nsegments, 792 bus_size_t maxsegsz, int flags, bus_dma_tag_t *ret_tag) 793{ 794 bus_dma_tag_t dmat; 795 796 dmat = malloc(sizeof(*dmat), M_DEVBUF, M_NOWAIT); 797 if (dmat == NULL) 798 return (ENOMEM); 799 800 /* 801 * Linux is very simplistic about DMA memory. For now don't 802 * maintain all specification information. Once Linux supplies 803 * better facilities for doing these operations, or the 804 * needs of this particular driver change, we might need to do 805 * more here. 806 */ 807 dmat->alignment = alignment; 808 dmat->boundary = boundary; 809 dmat->maxsize = maxsize; 810 *ret_tag = dmat; 811 return (0); 812} 813 814void 815ahd_dma_tag_destroy(struct ahd_softc *ahd, bus_dma_tag_t dmat) 816{ 817 free(dmat, M_DEVBUF); 818} 819 820int 821ahd_dmamem_alloc(struct ahd_softc *ahd, bus_dma_tag_t dmat, void** vaddr, 822 int flags, bus_dmamap_t *mapp) 823{ 824 *vaddr = pci_alloc_consistent(ahd->dev_softc, 825 dmat->maxsize, mapp); 826 if (*vaddr == NULL) 827 return (ENOMEM); 828 return(0); 829} 830 831void 832ahd_dmamem_free(struct ahd_softc *ahd, bus_dma_tag_t dmat, 833 void* vaddr, bus_dmamap_t map) 834{ 835 pci_free_consistent(ahd->dev_softc, dmat->maxsize, 836 vaddr, map); 837} 838 839int 840ahd_dmamap_load(struct ahd_softc *ahd, bus_dma_tag_t dmat, bus_dmamap_t map, 841 void *buf, bus_size_t buflen, bus_dmamap_callback_t *cb, 842 void *cb_arg, int flags) 843{ 844 /* 845 * Assume for now that this will only be used during 846 * initialization and not for per-transaction buffer mapping. 847 */ 848 bus_dma_segment_t stack_sg; 849 850 stack_sg.ds_addr = map; 851 stack_sg.ds_len = dmat->maxsize; 852 cb(cb_arg, &stack_sg, /*nseg*/1, /*error*/0); 853 return (0); 854} 855 856void 857ahd_dmamap_destroy(struct ahd_softc *ahd, bus_dma_tag_t dmat, bus_dmamap_t map) 858{ 859} 860 861int 862ahd_dmamap_unload(struct ahd_softc *ahd, bus_dma_tag_t dmat, bus_dmamap_t map) 863{ 864 /* Nothing to do */ 865 return (0); 866} 867 868/********************* Platform Dependent Functions ***************************/ 869static void 870ahd_linux_setup_iocell_info(u_long index, int instance, int targ, int32_t value) 871{ 872 873 if ((instance >= 0) 874 && (instance < ARRAY_SIZE(aic79xx_iocell_info))) { 875 uint8_t *iocell_info; 876 877 iocell_info = (uint8_t*)&aic79xx_iocell_info[instance]; 878 iocell_info[index] = value & 0xFFFF; 879 if (bootverbose) 880 printf("iocell[%d:%ld] = %d\n", instance, index, value); 881 } 882} 883 884static void 885ahd_linux_setup_tag_info_global(char *p) 886{ 887 int tags, i, j; 888 889 tags = simple_strtoul(p + 1, NULL, 0) & 0xff; 890 printf("Setting Global Tags= %d\n", tags); 891 892 for (i = 0; i < ARRAY_SIZE(aic79xx_tag_info); i++) { 893 for (j = 0; j < AHD_NUM_TARGETS; j++) { 894 aic79xx_tag_info[i].tag_commands[j] = tags; 895 } 896 } 897} 898 899static void 900ahd_linux_setup_tag_info(u_long arg, int instance, int targ, int32_t value) 901{ 902 903 if ((instance >= 0) && (targ >= 0) 904 && (instance < ARRAY_SIZE(aic79xx_tag_info)) 905 && (targ < AHD_NUM_TARGETS)) { 906 aic79xx_tag_info[instance].tag_commands[targ] = value & 0x1FF; 907 if (bootverbose) 908 printf("tag_info[%d:%d] = %d\n", instance, targ, value); 909 } 910} 911 912static char * 913ahd_parse_brace_option(char *opt_name, char *opt_arg, char *end, int depth, 914 void (*callback)(u_long, int, int, int32_t), 915 u_long callback_arg) 916{ 917 char *tok_end; 918 char *tok_end2; 919 int i; 920 int instance; 921 int targ; 922 int done; 923 char tok_list[] = {'.', ',', '{', '}', '\0'}; 924 925 /* All options use a ':' name/arg separator */ 926 if (*opt_arg != ':') 927 return (opt_arg); 928 opt_arg++; 929 instance = -1; 930 targ = -1; 931 done = FALSE; 932 /* 933 * Restore separator that may be in 934 * the middle of our option argument. 935 */ 936 tok_end = strchr(opt_arg, '\0'); 937 if (tok_end < end) 938 *tok_end = ','; 939 while (!done) { 940 switch (*opt_arg) { 941 case '{': 942 if (instance == -1) { 943 instance = 0; 944 } else { 945 if (depth > 1) { 946 if (targ == -1) 947 targ = 0; 948 } else { 949 printf("Malformed Option %s\n", 950 opt_name); 951 done = TRUE; 952 } 953 } 954 opt_arg++; 955 break; 956 case '}': 957 if (targ != -1) 958 targ = -1; 959 else if (instance != -1) 960 instance = -1; 961 opt_arg++; 962 break; 963 case ',': 964 case '.': 965 if (instance == -1) 966 done = TRUE; 967 else if (targ >= 0) 968 targ++; 969 else if (instance >= 0) 970 instance++; 971 opt_arg++; 972 break; 973 case '\0': 974 done = TRUE; 975 break; 976 default: 977 tok_end = end; 978 for (i = 0; tok_list[i]; i++) { 979 tok_end2 = strchr(opt_arg, tok_list[i]); 980 if ((tok_end2) && (tok_end2 < tok_end)) 981 tok_end = tok_end2; 982 } 983 callback(callback_arg, instance, targ, 984 simple_strtol(opt_arg, NULL, 0)); 985 opt_arg = tok_end; 986 break; 987 } 988 } 989 return (opt_arg); 990} 991 992/* 993 * Handle Linux boot parameters. This routine allows for assigning a value 994 * to a parameter with a ':' between the parameter and the value. 995 * ie. aic79xx=stpwlev:1,extended 996 */ 997static int 998aic79xx_setup(char *s) 999{ 1000 int i, n; 1001 char *p; 1002 char *end; 1003 1004 static struct { 1005 const char *name; 1006 uint32_t *flag; 1007 } options[] = { 1008 { "extended", &aic79xx_extended }, 1009 { "no_reset", &aic79xx_no_reset }, 1010 { "verbose", &aic79xx_verbose }, 1011 { "allow_memio", &aic79xx_allow_memio}, 1012#ifdef AHD_DEBUG 1013 { "debug", &ahd_debug }, 1014#endif 1015 { "periodic_otag", &aic79xx_periodic_otag }, 1016 { "pci_parity", &aic79xx_pci_parity }, 1017 { "seltime", &aic79xx_seltime }, 1018 { "tag_info", NULL }, 1019 { "global_tag_depth", NULL}, 1020 { "slewrate", NULL }, 1021 { "precomp", NULL }, 1022 { "amplitude", NULL }, 1023 { "slowcrc", &aic79xx_slowcrc }, 1024 }; 1025 1026 end = strchr(s, '\0'); 1027 1028 /* 1029 * XXX ia64 gcc isn't smart enough to know that ARRAY_SIZE 1030 * will never be 0 in this case. 1031 */ 1032 n = 0; 1033 1034 while ((p = strsep(&s, ",.")) != NULL) { 1035 if (*p == '\0') 1036 continue; 1037 for (i = 0; i < ARRAY_SIZE(options); i++) { 1038 1039 n = strlen(options[i].name); 1040 if (strncmp(options[i].name, p, n) == 0) 1041 break; 1042 } 1043 if (i == ARRAY_SIZE(options)) 1044 continue; 1045 1046 if (strncmp(p, "global_tag_depth", n) == 0) { 1047 ahd_linux_setup_tag_info_global(p + n); 1048 } else if (strncmp(p, "tag_info", n) == 0) { 1049 s = ahd_parse_brace_option("tag_info", p + n, end, 1050 2, ahd_linux_setup_tag_info, 0); 1051 } else if (strncmp(p, "slewrate", n) == 0) { 1052 s = ahd_parse_brace_option("slewrate", 1053 p + n, end, 1, ahd_linux_setup_iocell_info, 1054 AIC79XX_SLEWRATE_INDEX); 1055 } else if (strncmp(p, "precomp", n) == 0) { 1056 s = ahd_parse_brace_option("precomp", 1057 p + n, end, 1, ahd_linux_setup_iocell_info, 1058 AIC79XX_PRECOMP_INDEX); 1059 } else if (strncmp(p, "amplitude", n) == 0) { 1060 s = ahd_parse_brace_option("amplitude", 1061 p + n, end, 1, ahd_linux_setup_iocell_info, 1062 AIC79XX_AMPLITUDE_INDEX); 1063 } else if (p[n] == ':') { 1064 *(options[i].flag) = simple_strtoul(p + n + 1, NULL, 0); 1065 } else if (!strncmp(p, "verbose", n)) { 1066 *(options[i].flag) = 1; 1067 } else { 1068 *(options[i].flag) ^= 0xFFFFFFFF; 1069 } 1070 } 1071 return 1; 1072} 1073 1074__setup("aic79xx=", aic79xx_setup); 1075 1076uint32_t aic79xx_verbose; 1077 1078int 1079ahd_linux_register_host(struct ahd_softc *ahd, struct scsi_host_template *template) 1080{ 1081 char buf[80]; 1082 struct Scsi_Host *host; 1083 char *new_name; 1084 u_long s; 1085 int retval; 1086 1087 template->name = ahd->description; 1088 host = scsi_host_alloc(template, sizeof(struct ahd_softc *)); 1089 if (host == NULL) 1090 return (ENOMEM); 1091 1092 *((struct ahd_softc **)host->hostdata) = ahd; 1093 ahd->platform_data->host = host; 1094 host->can_queue = AHD_MAX_QUEUE; 1095 host->cmd_per_lun = 2; 1096 host->sg_tablesize = AHD_NSEG; 1097 host->this_id = ahd->our_id; 1098 host->irq = ahd->platform_data->irq; 1099 host->max_id = (ahd->features & AHD_WIDE) ? 16 : 8; 1100 host->max_lun = AHD_NUM_LUNS; 1101 host->max_channel = 0; 1102 host->sg_tablesize = AHD_NSEG; 1103 ahd_lock(ahd, &s); 1104 ahd_set_unit(ahd, ahd_linux_unit++); 1105 ahd_unlock(ahd, &s); 1106 sprintf(buf, "scsi%d", host->host_no); 1107 new_name = malloc(strlen(buf) + 1, M_DEVBUF, M_NOWAIT); 1108 if (new_name != NULL) { 1109 strcpy(new_name, buf); 1110 ahd_set_name(ahd, new_name); 1111 } 1112 host->unique_id = ahd->unit; 1113 ahd_linux_initialize_scsi_bus(ahd); 1114 ahd_intr_enable(ahd, TRUE); 1115 1116 host->transportt = ahd_linux_transport_template; 1117 1118 retval = scsi_add_host(host, &ahd->dev_softc->dev); 1119 if (retval) { 1120 printk(KERN_WARNING "aic79xx: scsi_add_host failed\n"); 1121 scsi_host_put(host); 1122 return retval; 1123 } 1124 1125 scsi_scan_host(host); 1126 return 0; 1127} 1128 1129uint64_t 1130ahd_linux_get_memsize(void) 1131{ 1132 struct sysinfo si; 1133 1134 si_meminfo(&si); 1135 return ((uint64_t)si.totalram << PAGE_SHIFT); 1136} 1137 1138/* 1139 * Place the SCSI bus into a known state by either resetting it, 1140 * or forcing transfer negotiations on the next command to any 1141 * target. 1142 */ 1143static void 1144ahd_linux_initialize_scsi_bus(struct ahd_softc *ahd) 1145{ 1146 u_int target_id; 1147 u_int numtarg; 1148 unsigned long s; 1149 1150 target_id = 0; 1151 numtarg = 0; 1152 1153 if (aic79xx_no_reset != 0) 1154 ahd->flags &= ~AHD_RESET_BUS_A; 1155 1156 if ((ahd->flags & AHD_RESET_BUS_A) != 0) 1157 ahd_reset_channel(ahd, 'A', /*initiate_reset*/TRUE); 1158 else 1159 numtarg = (ahd->features & AHD_WIDE) ? 16 : 8; 1160 1161 ahd_lock(ahd, &s); 1162 1163 /* 1164 * Force negotiation to async for all targets that 1165 * will not see an initial bus reset. 1166 */ 1167 for (; target_id < numtarg; target_id++) { 1168 struct ahd_devinfo devinfo; 1169 struct ahd_initiator_tinfo *tinfo; 1170 struct ahd_tmode_tstate *tstate; 1171 1172 tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id, 1173 target_id, &tstate); 1174 ahd_compile_devinfo(&devinfo, ahd->our_id, target_id, 1175 CAM_LUN_WILDCARD, 'A', ROLE_INITIATOR); 1176 ahd_update_neg_request(ahd, &devinfo, tstate, 1177 tinfo, AHD_NEG_ALWAYS); 1178 } 1179 ahd_unlock(ahd, &s); 1180 /* Give the bus some time to recover */ 1181 if ((ahd->flags & AHD_RESET_BUS_A) != 0) { 1182 ahd_freeze_simq(ahd); 1183 msleep(AIC79XX_RESET_DELAY); 1184 ahd_release_simq(ahd); 1185 } 1186} 1187 1188int 1189ahd_platform_alloc(struct ahd_softc *ahd, void *platform_arg) 1190{ 1191 ahd->platform_data = 1192 malloc(sizeof(struct ahd_platform_data), M_DEVBUF, M_NOWAIT); 1193 if (ahd->platform_data == NULL) 1194 return (ENOMEM); 1195 memset(ahd->platform_data, 0, sizeof(struct ahd_platform_data)); 1196 ahd->platform_data->irq = AHD_LINUX_NOIRQ; 1197 ahd_lockinit(ahd); 1198 ahd->seltime = (aic79xx_seltime & 0x3) << 4; 1199 return (0); 1200} 1201 1202void 1203ahd_platform_free(struct ahd_softc *ahd) 1204{ 1205 struct scsi_target *starget; 1206 int i; 1207 1208 if (ahd->platform_data != NULL) { 1209 /* destroy all of the device and target objects */ 1210 for (i = 0; i < AHD_NUM_TARGETS; i++) { 1211 starget = ahd->platform_data->starget[i]; 1212 if (starget != NULL) { 1213 ahd->platform_data->starget[i] = NULL; 1214 } 1215 } 1216 1217 if (ahd->platform_data->irq != AHD_LINUX_NOIRQ) 1218 free_irq(ahd->platform_data->irq, ahd); 1219 if (ahd->tags[0] == BUS_SPACE_PIO 1220 && ahd->bshs[0].ioport != 0) 1221 release_region(ahd->bshs[0].ioport, 256); 1222 if (ahd->tags[1] == BUS_SPACE_PIO 1223 && ahd->bshs[1].ioport != 0) 1224 release_region(ahd->bshs[1].ioport, 256); 1225 if (ahd->tags[0] == BUS_SPACE_MEMIO 1226 && ahd->bshs[0].maddr != NULL) { 1227 iounmap(ahd->bshs[0].maddr); 1228 release_mem_region(ahd->platform_data->mem_busaddr, 1229 0x1000); 1230 } 1231 if (ahd->platform_data->host) 1232 scsi_host_put(ahd->platform_data->host); 1233 1234 free(ahd->platform_data, M_DEVBUF); 1235 } 1236} 1237 1238void 1239ahd_platform_init(struct ahd_softc *ahd) 1240{ 1241 /* 1242 * Lookup and commit any modified IO Cell options. 1243 */ 1244 if (ahd->unit < ARRAY_SIZE(aic79xx_iocell_info)) { 1245 struct ahd_linux_iocell_opts *iocell_opts; 1246 1247 iocell_opts = &aic79xx_iocell_info[ahd->unit]; 1248 if (iocell_opts->precomp != AIC79XX_DEFAULT_PRECOMP) 1249 AHD_SET_PRECOMP(ahd, iocell_opts->precomp); 1250 if (iocell_opts->slewrate != AIC79XX_DEFAULT_SLEWRATE) 1251 AHD_SET_SLEWRATE(ahd, iocell_opts->slewrate); 1252 if (iocell_opts->amplitude != AIC79XX_DEFAULT_AMPLITUDE) 1253 AHD_SET_AMPLITUDE(ahd, iocell_opts->amplitude); 1254 } 1255 1256} 1257 1258void 1259ahd_platform_freeze_devq(struct ahd_softc *ahd, struct scb *scb) 1260{ 1261 ahd_platform_abort_scbs(ahd, SCB_GET_TARGET(ahd, scb), 1262 SCB_GET_CHANNEL(ahd, scb), 1263 SCB_GET_LUN(scb), SCB_LIST_NULL, 1264 ROLE_UNKNOWN, CAM_REQUEUE_REQ); 1265} 1266 1267void 1268ahd_platform_set_tags(struct ahd_softc *ahd, struct scsi_device *sdev, 1269 struct ahd_devinfo *devinfo, ahd_queue_alg alg) 1270{ 1271 struct ahd_linux_device *dev; 1272 int was_queuing; 1273 int now_queuing; 1274 1275 if (sdev == NULL) 1276 return; 1277 1278 dev = scsi_transport_device_data(sdev); 1279 1280 if (dev == NULL) 1281 return; 1282 was_queuing = dev->flags & (AHD_DEV_Q_BASIC|AHD_DEV_Q_TAGGED); 1283 switch (alg) { 1284 default: 1285 case AHD_QUEUE_NONE: 1286 now_queuing = 0; 1287 break; 1288 case AHD_QUEUE_BASIC: 1289 now_queuing = AHD_DEV_Q_BASIC; 1290 break; 1291 case AHD_QUEUE_TAGGED: 1292 now_queuing = AHD_DEV_Q_TAGGED; 1293 break; 1294 } 1295 if ((dev->flags & AHD_DEV_FREEZE_TIL_EMPTY) == 0 1296 && (was_queuing != now_queuing) 1297 && (dev->active != 0)) { 1298 dev->flags |= AHD_DEV_FREEZE_TIL_EMPTY; 1299 dev->qfrozen++; 1300 } 1301 1302 dev->flags &= ~(AHD_DEV_Q_BASIC|AHD_DEV_Q_TAGGED|AHD_DEV_PERIODIC_OTAG); 1303 if (now_queuing) { 1304 u_int usertags; 1305 1306 usertags = ahd_linux_user_tagdepth(ahd, devinfo); 1307 if (!was_queuing) { 1308 /* 1309 * Start out agressively and allow our 1310 * dynamic queue depth algorithm to take 1311 * care of the rest. 1312 */ 1313 dev->maxtags = usertags; 1314 dev->openings = dev->maxtags - dev->active; 1315 } 1316 if (dev->maxtags == 0) { 1317 /* 1318 * Queueing is disabled by the user. 1319 */ 1320 dev->openings = 1; 1321 } else if (alg == AHD_QUEUE_TAGGED) { 1322 dev->flags |= AHD_DEV_Q_TAGGED; 1323 if (aic79xx_periodic_otag != 0) 1324 dev->flags |= AHD_DEV_PERIODIC_OTAG; 1325 } else 1326 dev->flags |= AHD_DEV_Q_BASIC; 1327 } else { 1328 /* We can only have one opening. */ 1329 dev->maxtags = 0; 1330 dev->openings = 1 - dev->active; 1331 } 1332 1333 switch ((dev->flags & (AHD_DEV_Q_BASIC|AHD_DEV_Q_TAGGED))) { 1334 case AHD_DEV_Q_BASIC: 1335 scsi_set_tag_type(sdev, MSG_SIMPLE_TASK); 1336 scsi_activate_tcq(sdev, dev->openings + dev->active); 1337 break; 1338 case AHD_DEV_Q_TAGGED: 1339 scsi_set_tag_type(sdev, MSG_ORDERED_TASK); 1340 scsi_activate_tcq(sdev, dev->openings + dev->active); 1341 break; 1342 default: 1343 /* 1344 * We allow the OS to queue 2 untagged transactions to 1345 * us at any time even though we can only execute them 1346 * serially on the controller/device. This should 1347 * remove some latency. 1348 */ 1349 scsi_deactivate_tcq(sdev, 1); 1350 break; 1351 } 1352} 1353 1354int 1355ahd_platform_abort_scbs(struct ahd_softc *ahd, int target, char channel, 1356 int lun, u_int tag, role_t role, uint32_t status) 1357{ 1358 return 0; 1359} 1360 1361static u_int 1362ahd_linux_user_tagdepth(struct ahd_softc *ahd, struct ahd_devinfo *devinfo) 1363{ 1364 static int warned_user; 1365 u_int tags; 1366 1367 tags = 0; 1368 if ((ahd->user_discenable & devinfo->target_mask) != 0) { 1369 if (ahd->unit >= ARRAY_SIZE(aic79xx_tag_info)) { 1370 1371 if (warned_user == 0) { 1372 printf(KERN_WARNING 1373"aic79xx: WARNING: Insufficient tag_info instances\n" 1374"aic79xx: for installed controllers. Using defaults\n" 1375"aic79xx: Please update the aic79xx_tag_info array in\n" 1376"aic79xx: the aic79xx_osm.c source file.\n"); 1377 warned_user++; 1378 } 1379 tags = AHD_MAX_QUEUE; 1380 } else { 1381 adapter_tag_info_t *tag_info; 1382 1383 tag_info = &aic79xx_tag_info[ahd->unit]; 1384 tags = tag_info->tag_commands[devinfo->target_offset]; 1385 if (tags > AHD_MAX_QUEUE) 1386 tags = AHD_MAX_QUEUE; 1387 } 1388 } 1389 return (tags); 1390} 1391 1392/* 1393 * Determines the queue depth for a given device. 1394 */ 1395static void 1396ahd_linux_device_queue_depth(struct scsi_device *sdev) 1397{ 1398 struct ahd_devinfo devinfo; 1399 u_int tags; 1400 struct ahd_softc *ahd = *((struct ahd_softc **)sdev->host->hostdata); 1401 1402 ahd_compile_devinfo(&devinfo, 1403 ahd->our_id, 1404 sdev->sdev_target->id, sdev->lun, 1405 sdev->sdev_target->channel == 0 ? 'A' : 'B', 1406 ROLE_INITIATOR); 1407 tags = ahd_linux_user_tagdepth(ahd, &devinfo); 1408 if (tags != 0 && sdev->tagged_supported != 0) { 1409 1410 ahd_platform_set_tags(ahd, sdev, &devinfo, AHD_QUEUE_TAGGED); 1411 ahd_send_async(ahd, devinfo.channel, devinfo.target, 1412 devinfo.lun, AC_TRANSFER_NEG); 1413 ahd_print_devinfo(ahd, &devinfo); 1414 printf("Tagged Queuing enabled. Depth %d\n", tags); 1415 } else { 1416 ahd_platform_set_tags(ahd, sdev, &devinfo, AHD_QUEUE_NONE); 1417 ahd_send_async(ahd, devinfo.channel, devinfo.target, 1418 devinfo.lun, AC_TRANSFER_NEG); 1419 } 1420} 1421 1422static int 1423ahd_linux_run_command(struct ahd_softc *ahd, struct ahd_linux_device *dev, 1424 struct scsi_cmnd *cmd) 1425{ 1426 struct scb *scb; 1427 struct hardware_scb *hscb; 1428 struct ahd_initiator_tinfo *tinfo; 1429 struct ahd_tmode_tstate *tstate; 1430 u_int col_idx; 1431 uint16_t mask; 1432 unsigned long flags; 1433 1434 ahd_lock(ahd, &flags); 1435 1436 /* 1437 * Get an scb to use. 1438 */ 1439 tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id, 1440 cmd->device->id, &tstate); 1441 if ((dev->flags & (AHD_DEV_Q_TAGGED|AHD_DEV_Q_BASIC)) == 0 1442 || (tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0) { 1443 col_idx = AHD_NEVER_COL_IDX; 1444 } else { 1445 col_idx = AHD_BUILD_COL_IDX(cmd->device->id, 1446 cmd->device->lun); 1447 } 1448 if ((scb = ahd_get_scb(ahd, col_idx)) == NULL) { 1449 ahd->flags |= AHD_RESOURCE_SHORTAGE; 1450 ahd_unlock(ahd, &flags); 1451 return SCSI_MLQUEUE_HOST_BUSY; 1452 } 1453 1454 scb->io_ctx = cmd; 1455 scb->platform_data->dev = dev; 1456 hscb = scb->hscb; 1457 cmd->host_scribble = (char *)scb; 1458 1459 /* 1460 * Fill out basics of the HSCB. 1461 */ 1462 hscb->control = 0; 1463 hscb->scsiid = BUILD_SCSIID(ahd, cmd); 1464 hscb->lun = cmd->device->lun; 1465 scb->hscb->task_management = 0; 1466 mask = SCB_GET_TARGET_MASK(ahd, scb); 1467 1468 if ((ahd->user_discenable & mask) != 0) 1469 hscb->control |= DISCENB; 1470 1471 if ((tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0) 1472 scb->flags |= SCB_PACKETIZED; 1473 1474 if ((tstate->auto_negotiate & mask) != 0) { 1475 scb->flags |= SCB_AUTO_NEGOTIATE; 1476 scb->hscb->control |= MK_MESSAGE; 1477 } 1478 1479 if ((dev->flags & (AHD_DEV_Q_TAGGED|AHD_DEV_Q_BASIC)) != 0) { 1480 int msg_bytes; 1481 uint8_t tag_msgs[2]; 1482 1483 msg_bytes = scsi_populate_tag_msg(cmd, tag_msgs); 1484 if (msg_bytes && tag_msgs[0] != MSG_SIMPLE_TASK) { 1485 hscb->control |= tag_msgs[0]; 1486 if (tag_msgs[0] == MSG_ORDERED_TASK) 1487 dev->commands_since_idle_or_otag = 0; 1488 } else 1489 if (dev->commands_since_idle_or_otag == AHD_OTAG_THRESH 1490 && (dev->flags & AHD_DEV_Q_TAGGED) != 0) { 1491 hscb->control |= MSG_ORDERED_TASK; 1492 dev->commands_since_idle_or_otag = 0; 1493 } else { 1494 hscb->control |= MSG_SIMPLE_TASK; 1495 } 1496 } 1497 1498 hscb->cdb_len = cmd->cmd_len; 1499 memcpy(hscb->shared_data.idata.cdb, cmd->cmnd, hscb->cdb_len); 1500 1501 scb->platform_data->xfer_len = 0; 1502 ahd_set_residual(scb, 0); 1503 ahd_set_sense_residual(scb, 0); 1504 scb->sg_count = 0; 1505 if (cmd->use_sg != 0) { 1506 void *sg; 1507 struct scatterlist *cur_seg; 1508 u_int nseg; 1509 int dir; 1510 1511 cur_seg = (struct scatterlist *)cmd->request_buffer; 1512 dir = cmd->sc_data_direction; 1513 nseg = pci_map_sg(ahd->dev_softc, cur_seg, 1514 cmd->use_sg, dir); 1515 scb->platform_data->xfer_len = 0; 1516 for (sg = scb->sg_list; nseg > 0; nseg--, cur_seg++) { 1517 dma_addr_t addr; 1518 bus_size_t len; 1519 1520 addr = sg_dma_address(cur_seg); 1521 len = sg_dma_len(cur_seg); 1522 scb->platform_data->xfer_len += len; 1523 sg = ahd_sg_setup(ahd, scb, sg, addr, len, 1524 /*last*/nseg == 1); 1525 } 1526 } else if (cmd->request_bufflen != 0) { 1527 void *sg; 1528 dma_addr_t addr; 1529 int dir; 1530 1531 sg = scb->sg_list; 1532 dir = cmd->sc_data_direction; 1533 addr = pci_map_single(ahd->dev_softc, 1534 cmd->request_buffer, 1535 cmd->request_bufflen, dir); 1536 scb->platform_data->xfer_len = cmd->request_bufflen; 1537 scb->platform_data->buf_busaddr = addr; 1538 sg = ahd_sg_setup(ahd, scb, sg, addr, 1539 cmd->request_bufflen, /*last*/TRUE); 1540 } 1541 1542 LIST_INSERT_HEAD(&ahd->pending_scbs, scb, pending_links); 1543 dev->openings--; 1544 dev->active++; 1545 dev->commands_issued++; 1546 1547 if ((dev->flags & AHD_DEV_PERIODIC_OTAG) != 0) 1548 dev->commands_since_idle_or_otag++; 1549 scb->flags |= SCB_ACTIVE; 1550 ahd_queue_scb(ahd, scb); 1551 1552 ahd_unlock(ahd, &flags); 1553 1554 return 0; 1555} 1556 1557/* 1558 * SCSI controller interrupt handler. 1559 */ 1560irqreturn_t 1561ahd_linux_isr(int irq, void *dev_id) 1562{ 1563 struct ahd_softc *ahd; 1564 u_long flags; 1565 int ours; 1566 1567 ahd = (struct ahd_softc *) dev_id; 1568 ahd_lock(ahd, &flags); 1569 ours = ahd_intr(ahd); 1570 ahd_unlock(ahd, &flags); 1571 return IRQ_RETVAL(ours); 1572} 1573 1574void 1575ahd_send_async(struct ahd_softc *ahd, char channel, 1576 u_int target, u_int lun, ac_code code) 1577{ 1578 switch (code) { 1579 case AC_TRANSFER_NEG: 1580 { 1581 char buf[80]; 1582 struct scsi_target *starget; 1583 struct info_str info; 1584 struct ahd_initiator_tinfo *tinfo; 1585 struct ahd_tmode_tstate *tstate; 1586 unsigned int target_ppr_options; 1587 1588 BUG_ON(target == CAM_TARGET_WILDCARD); 1589 1590 info.buffer = buf; 1591 info.length = sizeof(buf); 1592 info.offset = 0; 1593 info.pos = 0; 1594 tinfo = ahd_fetch_transinfo(ahd, channel, ahd->our_id, 1595 target, &tstate); 1596 1597 /* 1598 * Don't bother reporting results while 1599 * negotiations are still pending. 1600 */ 1601 if (tinfo->curr.period != tinfo->goal.period 1602 || tinfo->curr.width != tinfo->goal.width 1603 || tinfo->curr.offset != tinfo->goal.offset 1604 || tinfo->curr.ppr_options != tinfo->goal.ppr_options) 1605 if (bootverbose == 0) 1606 break; 1607 1608 /* 1609 * Don't bother reporting results that 1610 * are identical to those last reported. 1611 */ 1612 starget = ahd->platform_data->starget[target]; 1613 if (starget == NULL) 1614 break; 1615 1616 target_ppr_options = 1617 (spi_dt(starget) ? MSG_EXT_PPR_DT_REQ : 0) 1618 + (spi_qas(starget) ? MSG_EXT_PPR_QAS_REQ : 0) 1619 + (spi_iu(starget) ? MSG_EXT_PPR_IU_REQ : 0) 1620 + (spi_rd_strm(starget) ? MSG_EXT_PPR_RD_STRM : 0) 1621 + (spi_pcomp_en(starget) ? MSG_EXT_PPR_PCOMP_EN : 0) 1622 + (spi_rti(starget) ? MSG_EXT_PPR_RTI : 0) 1623 + (spi_wr_flow(starget) ? MSG_EXT_PPR_WR_FLOW : 0) 1624 + (spi_hold_mcs(starget) ? MSG_EXT_PPR_HOLD_MCS : 0); 1625 1626 if (tinfo->curr.period == spi_period(starget) 1627 && tinfo->curr.width == spi_width(starget) 1628 && tinfo->curr.offset == spi_offset(starget) 1629 && tinfo->curr.ppr_options == target_ppr_options) 1630 if (bootverbose == 0) 1631 break; 1632 1633 spi_period(starget) = tinfo->curr.period; 1634 spi_width(starget) = tinfo->curr.width; 1635 spi_offset(starget) = tinfo->curr.offset; 1636 spi_dt(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_DT_REQ ? 1 : 0; 1637 spi_qas(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_QAS_REQ ? 1 : 0; 1638 spi_iu(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ ? 1 : 0; 1639 spi_rd_strm(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_RD_STRM ? 1 : 0; 1640 spi_pcomp_en(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_PCOMP_EN ? 1 : 0; 1641 spi_rti(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_RTI ? 1 : 0; 1642 spi_wr_flow(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_WR_FLOW ? 1 : 0; 1643 spi_hold_mcs(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_HOLD_MCS ? 1 : 0; 1644 spi_display_xfer_agreement(starget); 1645 break; 1646 } 1647 case AC_SENT_BDR: 1648 { 1649 WARN_ON(lun != CAM_LUN_WILDCARD); 1650 scsi_report_device_reset(ahd->platform_data->host, 1651 channel - 'A', target); 1652 break; 1653 } 1654 case AC_BUS_RESET: 1655 if (ahd->platform_data->host != NULL) { 1656 scsi_report_bus_reset(ahd->platform_data->host, 1657 channel - 'A'); 1658 } 1659 break; 1660 default: 1661 panic("ahd_send_async: Unexpected async event"); 1662 } 1663} 1664 1665/* 1666 * Calls the higher level scsi done function and frees the scb. 1667 */ 1668void 1669ahd_done(struct ahd_softc *ahd, struct scb *scb) 1670{ 1671 struct scsi_cmnd *cmd; 1672 struct ahd_linux_device *dev; 1673 1674 if ((scb->flags & SCB_ACTIVE) == 0) { 1675 printf("SCB %d done'd twice\n", SCB_GET_TAG(scb)); 1676 ahd_dump_card_state(ahd); 1677 panic("Stopping for safety"); 1678 } 1679 LIST_REMOVE(scb, pending_links); 1680 cmd = scb->io_ctx; 1681 dev = scb->platform_data->dev; 1682 dev->active--; 1683 dev->openings++; 1684 if ((cmd->result & (CAM_DEV_QFRZN << 16)) != 0) { 1685 cmd->result &= ~(CAM_DEV_QFRZN << 16); 1686 dev->qfrozen--; 1687 } 1688 ahd_linux_unmap_scb(ahd, scb); 1689 1690 /* 1691 * Guard against stale sense data. 1692 * The Linux mid-layer assumes that sense 1693 * was retrieved anytime the first byte of 1694 * the sense buffer looks "sane". 1695 */ 1696 cmd->sense_buffer[0] = 0; 1697 if (ahd_get_transaction_status(scb) == CAM_REQ_INPROG) { 1698 uint32_t amount_xferred; 1699 1700 amount_xferred = 1701 ahd_get_transfer_length(scb) - ahd_get_residual(scb); 1702 if ((scb->flags & SCB_TRANSMISSION_ERROR) != 0) { 1703#ifdef AHD_DEBUG 1704 if ((ahd_debug & AHD_SHOW_MISC) != 0) { 1705 ahd_print_path(ahd, scb); 1706 printf("Set CAM_UNCOR_PARITY\n"); 1707 } 1708#endif 1709 ahd_set_transaction_status(scb, CAM_UNCOR_PARITY); 1710#ifdef AHD_REPORT_UNDERFLOWS 1711 /* 1712 * This code is disabled by default as some 1713 * clients of the SCSI system do not properly 1714 * initialize the underflow parameter. This 1715 * results in spurious termination of commands 1716 * that complete as expected (e.g. underflow is 1717 * allowed as command can return variable amounts 1718 * of data. 1719 */ 1720 } else if (amount_xferred < scb->io_ctx->underflow) { 1721 u_int i; 1722 1723 ahd_print_path(ahd, scb); 1724 printf("CDB:"); 1725 for (i = 0; i < scb->io_ctx->cmd_len; i++) 1726 printf(" 0x%x", scb->io_ctx->cmnd[i]); 1727 printf("\n"); 1728 ahd_print_path(ahd, scb); 1729 printf("Saw underflow (%ld of %ld bytes). " 1730 "Treated as error\n", 1731 ahd_get_residual(scb), 1732 ahd_get_transfer_length(scb)); 1733 ahd_set_transaction_status(scb, CAM_DATA_RUN_ERR); 1734#endif 1735 } else { 1736 ahd_set_transaction_status(scb, CAM_REQ_CMP); 1737 } 1738 } else if (ahd_get_transaction_status(scb) == CAM_SCSI_STATUS_ERROR) { 1739 ahd_linux_handle_scsi_status(ahd, cmd->device, scb); 1740 } 1741 1742 if (dev->openings == 1 1743 && ahd_get_transaction_status(scb) == CAM_REQ_CMP 1744 && ahd_get_scsi_status(scb) != SCSI_STATUS_QUEUE_FULL) 1745 dev->tag_success_count++; 1746 /* 1747 * Some devices deal with temporary internal resource 1748 * shortages by returning queue full. When the queue 1749 * full occurrs, we throttle back. Slowly try to get 1750 * back to our previous queue depth. 1751 */ 1752 if ((dev->openings + dev->active) < dev->maxtags 1753 && dev->tag_success_count > AHD_TAG_SUCCESS_INTERVAL) { 1754 dev->tag_success_count = 0; 1755 dev->openings++; 1756 } 1757 1758 if (dev->active == 0) 1759 dev->commands_since_idle_or_otag = 0; 1760 1761 if ((scb->flags & SCB_RECOVERY_SCB) != 0) { 1762 printf("Recovery SCB completes\n"); 1763 if (ahd_get_transaction_status(scb) == CAM_BDR_SENT 1764 || ahd_get_transaction_status(scb) == CAM_REQ_ABORTED) 1765 ahd_set_transaction_status(scb, CAM_CMD_TIMEOUT); 1766 1767 if (ahd->platform_data->eh_done) 1768 complete(ahd->platform_data->eh_done); 1769 } 1770 1771 ahd_free_scb(ahd, scb); 1772 ahd_linux_queue_cmd_complete(ahd, cmd); 1773} 1774 1775static void 1776ahd_linux_handle_scsi_status(struct ahd_softc *ahd, 1777 struct scsi_device *sdev, struct scb *scb) 1778{ 1779 struct ahd_devinfo devinfo; 1780 struct ahd_linux_device *dev = scsi_transport_device_data(sdev); 1781 1782 ahd_compile_devinfo(&devinfo, 1783 ahd->our_id, 1784 sdev->sdev_target->id, sdev->lun, 1785 sdev->sdev_target->channel == 0 ? 'A' : 'B', 1786 ROLE_INITIATOR); 1787 1788 /* 1789 * We don't currently trust the mid-layer to 1790 * properly deal with queue full or busy. So, 1791 * when one occurs, we tell the mid-layer to 1792 * unconditionally requeue the command to us 1793 * so that we can retry it ourselves. We also 1794 * implement our own throttling mechanism so 1795 * we don't clobber the device with too many 1796 * commands. 1797 */ 1798 switch (ahd_get_scsi_status(scb)) { 1799 default: 1800 break; 1801 case SCSI_STATUS_CHECK_COND: 1802 case SCSI_STATUS_CMD_TERMINATED: 1803 { 1804 struct scsi_cmnd *cmd; 1805 1806 /* 1807 * Copy sense information to the OS's cmd 1808 * structure if it is available. 1809 */ 1810 cmd = scb->io_ctx; 1811 if ((scb->flags & (SCB_SENSE|SCB_PKT_SENSE)) != 0) { 1812 struct scsi_status_iu_header *siu; 1813 u_int sense_size; 1814 u_int sense_offset; 1815 1816 if (scb->flags & SCB_SENSE) { 1817 sense_size = min(sizeof(struct scsi_sense_data) 1818 - ahd_get_sense_residual(scb), 1819 (u_long)sizeof(cmd->sense_buffer)); 1820 sense_offset = 0; 1821 } else { 1822 /* 1823 * Copy only the sense data into the provided 1824 * buffer. 1825 */ 1826 siu = (struct scsi_status_iu_header *) 1827 scb->sense_data; 1828 sense_size = min_t(size_t, 1829 scsi_4btoul(siu->sense_length), 1830 sizeof(cmd->sense_buffer)); 1831 sense_offset = SIU_SENSE_OFFSET(siu); 1832 } 1833 1834 memset(cmd->sense_buffer, 0, sizeof(cmd->sense_buffer)); 1835 memcpy(cmd->sense_buffer, 1836 ahd_get_sense_buf(ahd, scb) 1837 + sense_offset, sense_size); 1838 cmd->result |= (DRIVER_SENSE << 24); 1839 1840#ifdef AHD_DEBUG 1841 if (ahd_debug & AHD_SHOW_SENSE) { 1842 int i; 1843 1844 printf("Copied %d bytes of sense data at %d:", 1845 sense_size, sense_offset); 1846 for (i = 0; i < sense_size; i++) { 1847 if ((i & 0xF) == 0) 1848 printf("\n"); 1849 printf("0x%x ", cmd->sense_buffer[i]); 1850 } 1851 printf("\n"); 1852 } 1853#endif 1854 } 1855 break; 1856 } 1857 case SCSI_STATUS_QUEUE_FULL: 1858 /* 1859 * By the time the core driver has returned this 1860 * command, all other commands that were queued 1861 * to us but not the device have been returned. 1862 * This ensures that dev->active is equal to 1863 * the number of commands actually queued to 1864 * the device. 1865 */ 1866 dev->tag_success_count = 0; 1867 if (dev->active != 0) { 1868 /* 1869 * Drop our opening count to the number 1870 * of commands currently outstanding. 1871 */ 1872 dev->openings = 0; 1873#ifdef AHD_DEBUG 1874 if ((ahd_debug & AHD_SHOW_QFULL) != 0) { 1875 ahd_print_path(ahd, scb); 1876 printf("Dropping tag count to %d\n", 1877 dev->active); 1878 } 1879#endif 1880 if (dev->active == dev->tags_on_last_queuefull) { 1881 1882 dev->last_queuefull_same_count++; 1883 /* 1884 * If we repeatedly see a queue full 1885 * at the same queue depth, this 1886 * device has a fixed number of tag 1887 * slots. Lock in this tag depth 1888 * so we stop seeing queue fulls from 1889 * this device. 1890 */ 1891 if (dev->last_queuefull_same_count 1892 == AHD_LOCK_TAGS_COUNT) { 1893 dev->maxtags = dev->active; 1894 ahd_print_path(ahd, scb); 1895 printf("Locking max tag count at %d\n", 1896 dev->active); 1897 } 1898 } else { 1899 dev->tags_on_last_queuefull = dev->active; 1900 dev->last_queuefull_same_count = 0; 1901 } 1902 ahd_set_transaction_status(scb, CAM_REQUEUE_REQ); 1903 ahd_set_scsi_status(scb, SCSI_STATUS_OK); 1904 ahd_platform_set_tags(ahd, sdev, &devinfo, 1905 (dev->flags & AHD_DEV_Q_BASIC) 1906 ? AHD_QUEUE_BASIC : AHD_QUEUE_TAGGED); 1907 break; 1908 } 1909 /* 1910 * Drop down to a single opening, and treat this 1911 * as if the target returned BUSY SCSI status. 1912 */ 1913 dev->openings = 1; 1914 ahd_platform_set_tags(ahd, sdev, &devinfo, 1915 (dev->flags & AHD_DEV_Q_BASIC) 1916 ? AHD_QUEUE_BASIC : AHD_QUEUE_TAGGED); 1917 ahd_set_scsi_status(scb, SCSI_STATUS_BUSY); 1918 } 1919} 1920 1921static void 1922ahd_linux_queue_cmd_complete(struct ahd_softc *ahd, struct scsi_cmnd *cmd) 1923{ 1924 int status; 1925 int new_status = DID_OK; 1926 int do_fallback = 0; 1927 int scsi_status; 1928 1929 /* 1930 * Map CAM error codes into Linux Error codes. We 1931 * avoid the conversion so that the DV code has the 1932 * full error information available when making 1933 * state change decisions. 1934 */ 1935 1936 status = ahd_cmd_get_transaction_status(cmd); 1937 switch (status) { 1938 case CAM_REQ_INPROG: 1939 case CAM_REQ_CMP: 1940 new_status = DID_OK; 1941 break; 1942 case CAM_AUTOSENSE_FAIL: 1943 new_status = DID_ERROR; 1944 /* Fallthrough */ 1945 case CAM_SCSI_STATUS_ERROR: 1946 scsi_status = ahd_cmd_get_scsi_status(cmd); 1947 1948 switch(scsi_status) { 1949 case SCSI_STATUS_CMD_TERMINATED: 1950 case SCSI_STATUS_CHECK_COND: 1951 if ((cmd->result >> 24) != DRIVER_SENSE) { 1952 do_fallback = 1; 1953 } else { 1954 struct scsi_sense_data *sense; 1955 1956 sense = (struct scsi_sense_data *) 1957 &cmd->sense_buffer; 1958 if (sense->extra_len >= 5 && 1959 (sense->add_sense_code == 0x47 1960 || sense->add_sense_code == 0x48)) 1961 do_fallback = 1; 1962 } 1963 break; 1964 default: 1965 break; 1966 } 1967 break; 1968 case CAM_REQ_ABORTED: 1969 new_status = DID_ABORT; 1970 break; 1971 case CAM_BUSY: 1972 new_status = DID_BUS_BUSY; 1973 break; 1974 case CAM_REQ_INVALID: 1975 case CAM_PATH_INVALID: 1976 new_status = DID_BAD_TARGET; 1977 break; 1978 case CAM_SEL_TIMEOUT: 1979 new_status = DID_NO_CONNECT; 1980 break; 1981 case CAM_SCSI_BUS_RESET: 1982 case CAM_BDR_SENT: 1983 new_status = DID_RESET; 1984 break; 1985 case CAM_UNCOR_PARITY: 1986 new_status = DID_PARITY; 1987 do_fallback = 1; 1988 break; 1989 case CAM_CMD_TIMEOUT: 1990 new_status = DID_TIME_OUT; 1991 do_fallback = 1; 1992 break; 1993 case CAM_REQ_CMP_ERR: 1994 case CAM_UNEXP_BUSFREE: 1995 case CAM_DATA_RUN_ERR: 1996 new_status = DID_ERROR; 1997 do_fallback = 1; 1998 break; 1999 case CAM_UA_ABORT: 2000 case CAM_NO_HBA: 2001 case CAM_SEQUENCE_FAIL: 2002 case CAM_CCB_LEN_ERR: 2003 case CAM_PROVIDE_FAIL: 2004 case CAM_REQ_TERMIO: 2005 case CAM_UNREC_HBA_ERROR: 2006 case CAM_REQ_TOO_BIG: 2007 new_status = DID_ERROR; 2008 break; 2009 case CAM_REQUEUE_REQ: 2010 new_status = DID_REQUEUE; 2011 break; 2012 default: 2013 /* We should never get here */ 2014 new_status = DID_ERROR; 2015 break; 2016 } 2017 2018 if (do_fallback) { 2019 printf("%s: device overrun (status %x) on %d:%d:%d\n", 2020 ahd_name(ahd), status, cmd->device->channel, 2021 cmd->device->id, cmd->device->lun); 2022 } 2023 2024 ahd_cmd_set_transaction_status(cmd, new_status); 2025 2026 cmd->scsi_done(cmd); 2027} 2028 2029void 2030ahd_freeze_simq(struct ahd_softc *ahd) 2031{ 2032 scsi_block_requests(ahd->platform_data->host); 2033} 2034 2035void 2036ahd_release_simq(struct ahd_softc *ahd) 2037{ 2038 scsi_unblock_requests(ahd->platform_data->host); 2039} 2040 2041static int 2042ahd_linux_queue_abort_cmd(struct scsi_cmnd *cmd) 2043{ 2044 struct ahd_softc *ahd; 2045 struct ahd_linux_device *dev; 2046 struct scb *pending_scb; 2047 u_int saved_scbptr; 2048 u_int active_scbptr; 2049 u_int last_phase; 2050 u_int saved_scsiid; 2051 u_int cdb_byte; 2052 int retval; 2053 int was_paused; 2054 int paused; 2055 int wait; 2056 int disconnected; 2057 ahd_mode_state saved_modes; 2058 unsigned long flags; 2059 2060 pending_scb = NULL; 2061 paused = FALSE; 2062 wait = FALSE; 2063 ahd = *(struct ahd_softc **)cmd->device->host->hostdata; 2064 2065 scmd_printk(KERN_INFO, cmd, 2066 "Attempting to queue an ABORT message:"); 2067 2068 printf("CDB:"); 2069 for (cdb_byte = 0; cdb_byte < cmd->cmd_len; cdb_byte++) 2070 printf(" 0x%x", cmd->cmnd[cdb_byte]); 2071 printf("\n"); 2072 2073 ahd_lock(ahd, &flags); 2074 2075 /* 2076 * First determine if we currently own this command. 2077 * Start by searching the device queue. If not found 2078 * there, check the pending_scb list. If not found 2079 * at all, and the system wanted us to just abort the 2080 * command, return success. 2081 */ 2082 dev = scsi_transport_device_data(cmd->device); 2083 2084 if (dev == NULL) { 2085 /* 2086 * No target device for this command exists, 2087 * so we must not still own the command. 2088 */ 2089 scmd_printk(KERN_INFO, cmd, "Is not an active device\n"); 2090 retval = SUCCESS; 2091 goto no_cmd; 2092 } 2093 2094 /* 2095 * See if we can find a matching cmd in the pending list. 2096 */ 2097 LIST_FOREACH(pending_scb, &ahd->pending_scbs, pending_links) { 2098 if (pending_scb->io_ctx == cmd) 2099 break; 2100 } 2101 2102 if (pending_scb == NULL) { 2103 scmd_printk(KERN_INFO, cmd, "Command not found\n"); 2104 goto no_cmd; 2105 } 2106 2107 if ((pending_scb->flags & SCB_RECOVERY_SCB) != 0) { 2108 /* 2109 * We can't queue two recovery actions using the same SCB 2110 */ 2111 retval = FAILED; 2112 goto done; 2113 } 2114 2115 /* 2116 * Ensure that the card doesn't do anything 2117 * behind our back. Also make sure that we 2118 * didn't "just" miss an interrupt that would 2119 * affect this cmd. 2120 */ 2121 was_paused = ahd_is_paused(ahd); 2122 ahd_pause_and_flushwork(ahd); 2123 paused = TRUE; 2124 2125 if ((pending_scb->flags & SCB_ACTIVE) == 0) { 2126 scmd_printk(KERN_INFO, cmd, "Command already completed\n"); 2127 goto no_cmd; 2128 } 2129 2130 printf("%s: At time of recovery, card was %spaused\n", 2131 ahd_name(ahd), was_paused ? "" : "not "); 2132 ahd_dump_card_state(ahd); 2133 2134 disconnected = TRUE; 2135 if (ahd_search_qinfifo(ahd, cmd->device->id, 2136 cmd->device->channel + 'A', 2137 cmd->device->lun, 2138 pending_scb->hscb->tag, 2139 ROLE_INITIATOR, CAM_REQ_ABORTED, 2140 SEARCH_COMPLETE) > 0) { 2141 printf("%s:%d:%d:%d: Cmd aborted from QINFIFO\n", 2142 ahd_name(ahd), cmd->device->channel, 2143 cmd->device->id, cmd->device->lun); 2144 retval = SUCCESS; 2145 goto done; 2146 } 2147 2148 saved_modes = ahd_save_modes(ahd); 2149 ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); 2150 last_phase = ahd_inb(ahd, LASTPHASE); 2151 saved_scbptr = ahd_get_scbptr(ahd); 2152 active_scbptr = saved_scbptr; 2153 if (disconnected && (ahd_inb(ahd, SEQ_FLAGS) & NOT_IDENTIFIED) == 0) { 2154 struct scb *bus_scb; 2155 2156 bus_scb = ahd_lookup_scb(ahd, active_scbptr); 2157 if (bus_scb == pending_scb) 2158 disconnected = FALSE; 2159 } 2160 2161 /* 2162 * At this point, pending_scb is the scb associated with the 2163 * passed in command. That command is currently active on the 2164 * bus or is in the disconnected state. 2165 */ 2166 saved_scsiid = ahd_inb(ahd, SAVED_SCSIID); 2167 if (last_phase != P_BUSFREE 2168 && SCB_GET_TAG(pending_scb) == active_scbptr) { 2169 2170 /* 2171 * We're active on the bus, so assert ATN 2172 * and hope that the target responds. 2173 */ 2174 pending_scb = ahd_lookup_scb(ahd, active_scbptr); 2175 pending_scb->flags |= SCB_RECOVERY_SCB|SCB_ABORT; 2176 ahd_outb(ahd, MSG_OUT, HOST_MSG); 2177 ahd_outb(ahd, SCSISIGO, last_phase|ATNO); 2178 scmd_printk(KERN_INFO, cmd, "Device is active, asserting ATN\n"); 2179 wait = TRUE; 2180 } else if (disconnected) { 2181 2182 /* 2183 * Actually re-queue this SCB in an attempt 2184 * to select the device before it reconnects. 2185 */ 2186 pending_scb->flags |= SCB_RECOVERY_SCB|SCB_ABORT; 2187 ahd_set_scbptr(ahd, SCB_GET_TAG(pending_scb)); 2188 pending_scb->hscb->cdb_len = 0; 2189 pending_scb->hscb->task_attribute = 0; 2190 pending_scb->hscb->task_management = SIU_TASKMGMT_ABORT_TASK; 2191 2192 if ((pending_scb->flags & SCB_PACKETIZED) != 0) { 2193 /* 2194 * Mark the SCB has having an outstanding 2195 * task management function. Should the command 2196 * complete normally before the task management 2197 * function can be sent, the host will be notified 2198 * to abort our requeued SCB. 2199 */ 2200 ahd_outb(ahd, SCB_TASK_MANAGEMENT, 2201 pending_scb->hscb->task_management); 2202 } else { 2203 /* 2204 * If non-packetized, set the MK_MESSAGE control 2205 * bit indicating that we desire to send a message. 2206 * We also set the disconnected flag since there is 2207 * no guarantee that our SCB control byte matches 2208 * the version on the card. We don't want the 2209 * sequencer to abort the command thinking an 2210 * unsolicited reselection occurred. 2211 */ 2212 pending_scb->hscb->control |= MK_MESSAGE|DISCONNECTED; 2213 2214 /* 2215 * The sequencer will never re-reference the 2216 * in-core SCB. To make sure we are notified 2217 * during reslection, set the MK_MESSAGE flag in 2218 * the card's copy of the SCB. 2219 */ 2220 ahd_outb(ahd, SCB_CONTROL, 2221 ahd_inb(ahd, SCB_CONTROL)|MK_MESSAGE); 2222 } 2223 2224 /* 2225 * Clear out any entries in the QINFIFO first 2226 * so we are the next SCB for this target 2227 * to run. 2228 */ 2229 ahd_search_qinfifo(ahd, cmd->device->id, 2230 cmd->device->channel + 'A', cmd->device->lun, 2231 SCB_LIST_NULL, ROLE_INITIATOR, 2232 CAM_REQUEUE_REQ, SEARCH_COMPLETE); 2233 ahd_qinfifo_requeue_tail(ahd, pending_scb); 2234 ahd_set_scbptr(ahd, saved_scbptr); 2235 ahd_print_path(ahd, pending_scb); 2236 printf("Device is disconnected, re-queuing SCB\n"); 2237 wait = TRUE; 2238 } else { 2239 scmd_printk(KERN_INFO, cmd, "Unable to deliver message\n"); 2240 retval = FAILED; 2241 goto done; 2242 } 2243 2244no_cmd: 2245 /* 2246 * Our assumption is that if we don't have the command, no 2247 * recovery action was required, so we return success. Again, 2248 * the semantics of the mid-layer recovery engine are not 2249 * well defined, so this may change in time. 2250 */ 2251 retval = SUCCESS; 2252done: 2253 if (paused) 2254 ahd_unpause(ahd); 2255 if (wait) { 2256 DECLARE_COMPLETION_ONSTACK(done); 2257 2258 ahd->platform_data->eh_done = &done; 2259 ahd_unlock(ahd, &flags); 2260 2261 printf("%s: Recovery code sleeping\n", ahd_name(ahd)); 2262 if (!wait_for_completion_timeout(&done, 5 * HZ)) { 2263 ahd_lock(ahd, &flags); 2264 ahd->platform_data->eh_done = NULL; 2265 ahd_unlock(ahd, &flags); 2266 printf("%s: Timer Expired (active %d)\n", 2267 ahd_name(ahd), dev->active); 2268 retval = FAILED; 2269 } 2270 printf("Recovery code awake\n"); 2271 } else 2272 ahd_unlock(ahd, &flags); 2273 2274 if (retval != SUCCESS) 2275 printf("%s: Command abort returning 0x%x\n", 2276 ahd_name(ahd), retval); 2277 2278 return retval; 2279} 2280 2281static void ahd_linux_set_width(struct scsi_target *starget, int width) 2282{ 2283 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 2284 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); 2285 struct ahd_devinfo devinfo; 2286 unsigned long flags; 2287 2288 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, 2289 starget->channel + 'A', ROLE_INITIATOR); 2290 ahd_lock(ahd, &flags); 2291 ahd_set_width(ahd, &devinfo, width, AHD_TRANS_GOAL, FALSE); 2292 ahd_unlock(ahd, &flags); 2293} 2294 2295static void ahd_linux_set_period(struct scsi_target *starget, int period) 2296{ 2297 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 2298 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); 2299 struct ahd_tmode_tstate *tstate; 2300 struct ahd_initiator_tinfo *tinfo 2301 = ahd_fetch_transinfo(ahd, 2302 starget->channel + 'A', 2303 shost->this_id, starget->id, &tstate); 2304 struct ahd_devinfo devinfo; 2305 unsigned int ppr_options = tinfo->goal.ppr_options; 2306 unsigned int dt; 2307 unsigned long flags; 2308 unsigned long offset = tinfo->goal.offset; 2309 2310#ifdef AHD_DEBUG 2311 if ((ahd_debug & AHD_SHOW_DV) != 0) 2312 printf("%s: set period to %d\n", ahd_name(ahd), period); 2313#endif 2314 if (offset == 0) 2315 offset = MAX_OFFSET; 2316 2317 if (period < 8) 2318 period = 8; 2319 if (period < 10) { 2320 ppr_options |= MSG_EXT_PPR_DT_REQ; 2321 if (period == 8) 2322 ppr_options |= MSG_EXT_PPR_IU_REQ; 2323 } 2324 2325 dt = ppr_options & MSG_EXT_PPR_DT_REQ; 2326 2327 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, 2328 starget->channel + 'A', ROLE_INITIATOR); 2329 2330 /* all PPR requests apart from QAS require wide transfers */ 2331 if (ppr_options & ~MSG_EXT_PPR_QAS_REQ) { 2332 if (spi_width(starget) == 0) 2333 ppr_options &= MSG_EXT_PPR_QAS_REQ; 2334 } 2335 2336 ahd_find_syncrate(ahd, &period, &ppr_options, 2337 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); 2338 2339 ahd_lock(ahd, &flags); 2340 ahd_set_syncrate(ahd, &devinfo, period, offset, 2341 ppr_options, AHD_TRANS_GOAL, FALSE); 2342 ahd_unlock(ahd, &flags); 2343} 2344 2345static void ahd_linux_set_offset(struct scsi_target *starget, int offset) 2346{ 2347 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 2348 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); 2349 struct ahd_tmode_tstate *tstate; 2350 struct ahd_initiator_tinfo *tinfo 2351 = ahd_fetch_transinfo(ahd, 2352 starget->channel + 'A', 2353 shost->this_id, starget->id, &tstate); 2354 struct ahd_devinfo devinfo; 2355 unsigned int ppr_options = 0; 2356 unsigned int period = 0; 2357 unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ; 2358 unsigned long flags; 2359 2360#ifdef AHD_DEBUG 2361 if ((ahd_debug & AHD_SHOW_DV) != 0) 2362 printf("%s: set offset to %d\n", ahd_name(ahd), offset); 2363#endif 2364 2365 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, 2366 starget->channel + 'A', ROLE_INITIATOR); 2367 if (offset != 0) { 2368 period = tinfo->goal.period; 2369 ppr_options = tinfo->goal.ppr_options; 2370 ahd_find_syncrate(ahd, &period, &ppr_options, 2371 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); 2372 } 2373 2374 ahd_lock(ahd, &flags); 2375 ahd_set_syncrate(ahd, &devinfo, period, offset, ppr_options, 2376 AHD_TRANS_GOAL, FALSE); 2377 ahd_unlock(ahd, &flags); 2378} 2379 2380static void ahd_linux_set_dt(struct scsi_target *starget, int dt) 2381{ 2382 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 2383 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); 2384 struct ahd_tmode_tstate *tstate; 2385 struct ahd_initiator_tinfo *tinfo 2386 = ahd_fetch_transinfo(ahd, 2387 starget->channel + 'A', 2388 shost->this_id, starget->id, &tstate); 2389 struct ahd_devinfo devinfo; 2390 unsigned int ppr_options = tinfo->goal.ppr_options 2391 & ~MSG_EXT_PPR_DT_REQ; 2392 unsigned int period = tinfo->goal.period; 2393 unsigned int width = tinfo->goal.width; 2394 unsigned long flags; 2395 2396#ifdef AHD_DEBUG 2397 if ((ahd_debug & AHD_SHOW_DV) != 0) 2398 printf("%s: %s DT\n", ahd_name(ahd), 2399 dt ? "enabling" : "disabling"); 2400#endif 2401 if (dt) { 2402 ppr_options |= MSG_EXT_PPR_DT_REQ; 2403 if (!width) 2404 ahd_linux_set_width(starget, 1); 2405 } else { 2406 if (period <= 9) 2407 period = 10; /* If resetting DT, period must be >= 25ns */ 2408 /* IU is invalid without DT set */ 2409 ppr_options &= ~MSG_EXT_PPR_IU_REQ; 2410 } 2411 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, 2412 starget->channel + 'A', ROLE_INITIATOR); 2413 ahd_find_syncrate(ahd, &period, &ppr_options, 2414 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); 2415 2416 ahd_lock(ahd, &flags); 2417 ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, 2418 ppr_options, AHD_TRANS_GOAL, FALSE); 2419 ahd_unlock(ahd, &flags); 2420} 2421 2422static void ahd_linux_set_qas(struct scsi_target *starget, int qas) 2423{ 2424 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 2425 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); 2426 struct ahd_tmode_tstate *tstate; 2427 struct ahd_initiator_tinfo *tinfo 2428 = ahd_fetch_transinfo(ahd, 2429 starget->channel + 'A', 2430 shost->this_id, starget->id, &tstate); 2431 struct ahd_devinfo devinfo; 2432 unsigned int ppr_options = tinfo->goal.ppr_options 2433 & ~MSG_EXT_PPR_QAS_REQ; 2434 unsigned int period = tinfo->goal.period; 2435 unsigned int dt; 2436 unsigned long flags; 2437 2438#ifdef AHD_DEBUG 2439 if ((ahd_debug & AHD_SHOW_DV) != 0) 2440 printf("%s: %s QAS\n", ahd_name(ahd), 2441 qas ? "enabling" : "disabling"); 2442#endif 2443 2444 if (qas) { 2445 ppr_options |= MSG_EXT_PPR_QAS_REQ; 2446 } 2447 2448 dt = ppr_options & MSG_EXT_PPR_DT_REQ; 2449 2450 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, 2451 starget->channel + 'A', ROLE_INITIATOR); 2452 ahd_find_syncrate(ahd, &period, &ppr_options, 2453 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); 2454 2455 ahd_lock(ahd, &flags); 2456 ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, 2457 ppr_options, AHD_TRANS_GOAL, FALSE); 2458 ahd_unlock(ahd, &flags); 2459} 2460 2461static void ahd_linux_set_iu(struct scsi_target *starget, int iu) 2462{ 2463 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 2464 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); 2465 struct ahd_tmode_tstate *tstate; 2466 struct ahd_initiator_tinfo *tinfo 2467 = ahd_fetch_transinfo(ahd, 2468 starget->channel + 'A', 2469 shost->this_id, starget->id, &tstate); 2470 struct ahd_devinfo devinfo; 2471 unsigned int ppr_options = tinfo->goal.ppr_options 2472 & ~MSG_EXT_PPR_IU_REQ; 2473 unsigned int period = tinfo->goal.period; 2474 unsigned int dt; 2475 unsigned long flags; 2476 2477#ifdef AHD_DEBUG 2478 if ((ahd_debug & AHD_SHOW_DV) != 0) 2479 printf("%s: %s IU\n", ahd_name(ahd), 2480 iu ? "enabling" : "disabling"); 2481#endif 2482 2483 if (iu) { 2484 ppr_options |= MSG_EXT_PPR_IU_REQ; 2485 ppr_options |= MSG_EXT_PPR_DT_REQ; /* IU requires DT */ 2486 } 2487 2488 dt = ppr_options & MSG_EXT_PPR_DT_REQ; 2489 2490 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, 2491 starget->channel + 'A', ROLE_INITIATOR); 2492 ahd_find_syncrate(ahd, &period, &ppr_options, 2493 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); 2494 2495 ahd_lock(ahd, &flags); 2496 ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, 2497 ppr_options, AHD_TRANS_GOAL, FALSE); 2498 ahd_unlock(ahd, &flags); 2499} 2500 2501static void ahd_linux_set_rd_strm(struct scsi_target *starget, int rdstrm) 2502{ 2503 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 2504 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); 2505 struct ahd_tmode_tstate *tstate; 2506 struct ahd_initiator_tinfo *tinfo 2507 = ahd_fetch_transinfo(ahd, 2508 starget->channel + 'A', 2509 shost->this_id, starget->id, &tstate); 2510 struct ahd_devinfo devinfo; 2511 unsigned int ppr_options = tinfo->goal.ppr_options 2512 & ~MSG_EXT_PPR_RD_STRM; 2513 unsigned int period = tinfo->goal.period; 2514 unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ; 2515 unsigned long flags; 2516 2517#ifdef AHD_DEBUG 2518 if ((ahd_debug & AHD_SHOW_DV) != 0) 2519 printf("%s: %s Read Streaming\n", ahd_name(ahd), 2520 rdstrm ? "enabling" : "disabling"); 2521#endif 2522 2523 if (rdstrm) 2524 ppr_options |= MSG_EXT_PPR_RD_STRM; 2525 2526 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, 2527 starget->channel + 'A', ROLE_INITIATOR); 2528 ahd_find_syncrate(ahd, &period, &ppr_options, 2529 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); 2530 2531 ahd_lock(ahd, &flags); 2532 ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, 2533 ppr_options, AHD_TRANS_GOAL, FALSE); 2534 ahd_unlock(ahd, &flags); 2535} 2536 2537static void ahd_linux_set_wr_flow(struct scsi_target *starget, int wrflow) 2538{ 2539 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 2540 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); 2541 struct ahd_tmode_tstate *tstate; 2542 struct ahd_initiator_tinfo *tinfo 2543 = ahd_fetch_transinfo(ahd, 2544 starget->channel + 'A', 2545 shost->this_id, starget->id, &tstate); 2546 struct ahd_devinfo devinfo; 2547 unsigned int ppr_options = tinfo->goal.ppr_options 2548 & ~MSG_EXT_PPR_WR_FLOW; 2549 unsigned int period = tinfo->goal.period; 2550 unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ; 2551 unsigned long flags; 2552 2553#ifdef AHD_DEBUG 2554 if ((ahd_debug & AHD_SHOW_DV) != 0) 2555 printf("%s: %s Write Flow Control\n", ahd_name(ahd), 2556 wrflow ? "enabling" : "disabling"); 2557#endif 2558 2559 if (wrflow) 2560 ppr_options |= MSG_EXT_PPR_WR_FLOW; 2561 2562 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, 2563 starget->channel + 'A', ROLE_INITIATOR); 2564 ahd_find_syncrate(ahd, &period, &ppr_options, 2565 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); 2566 2567 ahd_lock(ahd, &flags); 2568 ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, 2569 ppr_options, AHD_TRANS_GOAL, FALSE); 2570 ahd_unlock(ahd, &flags); 2571} 2572 2573static void ahd_linux_set_rti(struct scsi_target *starget, int rti) 2574{ 2575 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 2576 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); 2577 struct ahd_tmode_tstate *tstate; 2578 struct ahd_initiator_tinfo *tinfo 2579 = ahd_fetch_transinfo(ahd, 2580 starget->channel + 'A', 2581 shost->this_id, starget->id, &tstate); 2582 struct ahd_devinfo devinfo; 2583 unsigned int ppr_options = tinfo->goal.ppr_options 2584 & ~MSG_EXT_PPR_RTI; 2585 unsigned int period = tinfo->goal.period; 2586 unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ; 2587 unsigned long flags; 2588 2589 if ((ahd->features & AHD_RTI) == 0) { 2590#ifdef AHD_DEBUG 2591 if ((ahd_debug & AHD_SHOW_DV) != 0) 2592 printf("%s: RTI not available\n", ahd_name(ahd)); 2593#endif 2594 return; 2595 } 2596 2597#ifdef AHD_DEBUG 2598 if ((ahd_debug & AHD_SHOW_DV) != 0) 2599 printf("%s: %s RTI\n", ahd_name(ahd), 2600 rti ? "enabling" : "disabling"); 2601#endif 2602 2603 if (rti) 2604 ppr_options |= MSG_EXT_PPR_RTI; 2605 2606 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, 2607 starget->channel + 'A', ROLE_INITIATOR); 2608 ahd_find_syncrate(ahd, &period, &ppr_options, 2609 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); 2610 2611 ahd_lock(ahd, &flags); 2612 ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, 2613 ppr_options, AHD_TRANS_GOAL, FALSE); 2614 ahd_unlock(ahd, &flags); 2615} 2616 2617static void ahd_linux_set_pcomp_en(struct scsi_target *starget, int pcomp) 2618{ 2619 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 2620 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); 2621 struct ahd_tmode_tstate *tstate; 2622 struct ahd_initiator_tinfo *tinfo 2623 = ahd_fetch_transinfo(ahd, 2624 starget->channel + 'A', 2625 shost->this_id, starget->id, &tstate); 2626 struct ahd_devinfo devinfo; 2627 unsigned int ppr_options = tinfo->goal.ppr_options 2628 & ~MSG_EXT_PPR_PCOMP_EN; 2629 unsigned int period = tinfo->goal.period; 2630 unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ; 2631 unsigned long flags; 2632 2633#ifdef AHD_DEBUG 2634 if ((ahd_debug & AHD_SHOW_DV) != 0) 2635 printf("%s: %s Precompensation\n", ahd_name(ahd), 2636 pcomp ? "Enable" : "Disable"); 2637#endif 2638 2639 if (pcomp) 2640 ppr_options |= MSG_EXT_PPR_PCOMP_EN; 2641 2642 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, 2643 starget->channel + 'A', ROLE_INITIATOR); 2644 ahd_find_syncrate(ahd, &period, &ppr_options, 2645 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); 2646 2647 ahd_lock(ahd, &flags); 2648 ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, 2649 ppr_options, AHD_TRANS_GOAL, FALSE); 2650 ahd_unlock(ahd, &flags); 2651} 2652 2653static void ahd_linux_set_hold_mcs(struct scsi_target *starget, int hold) 2654{ 2655 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 2656 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); 2657 struct ahd_tmode_tstate *tstate; 2658 struct ahd_initiator_tinfo *tinfo 2659 = ahd_fetch_transinfo(ahd, 2660 starget->channel + 'A', 2661 shost->this_id, starget->id, &tstate); 2662 struct ahd_devinfo devinfo; 2663 unsigned int ppr_options = tinfo->goal.ppr_options 2664 & ~MSG_EXT_PPR_HOLD_MCS; 2665 unsigned int period = tinfo->goal.period; 2666 unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ; 2667 unsigned long flags; 2668 2669 if (hold) 2670 ppr_options |= MSG_EXT_PPR_HOLD_MCS; 2671 2672 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, 2673 starget->channel + 'A', ROLE_INITIATOR); 2674 ahd_find_syncrate(ahd, &period, &ppr_options, 2675 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); 2676 2677 ahd_lock(ahd, &flags); 2678 ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, 2679 ppr_options, AHD_TRANS_GOAL, FALSE); 2680 ahd_unlock(ahd, &flags); 2681} 2682 2683 2684 2685static struct spi_function_template ahd_linux_transport_functions = { 2686 .set_offset = ahd_linux_set_offset, 2687 .show_offset = 1, 2688 .set_period = ahd_linux_set_period, 2689 .show_period = 1, 2690 .set_width = ahd_linux_set_width, 2691 .show_width = 1, 2692 .set_dt = ahd_linux_set_dt, 2693 .show_dt = 1, 2694 .set_iu = ahd_linux_set_iu, 2695 .show_iu = 1, 2696 .set_qas = ahd_linux_set_qas, 2697 .show_qas = 1, 2698 .set_rd_strm = ahd_linux_set_rd_strm, 2699 .show_rd_strm = 1, 2700 .set_wr_flow = ahd_linux_set_wr_flow, 2701 .show_wr_flow = 1, 2702 .set_rti = ahd_linux_set_rti, 2703 .show_rti = 1, 2704 .set_pcomp_en = ahd_linux_set_pcomp_en, 2705 .show_pcomp_en = 1, 2706 .set_hold_mcs = ahd_linux_set_hold_mcs, 2707 .show_hold_mcs = 1, 2708}; 2709 2710static int __init 2711ahd_linux_init(void) 2712{ 2713 int error = 0; 2714 2715 /* 2716 * If we've been passed any parameters, process them now. 2717 */ 2718 if (aic79xx) 2719 aic79xx_setup(aic79xx); 2720 2721 ahd_linux_transport_template = 2722 spi_attach_transport(&ahd_linux_transport_functions); 2723 if (!ahd_linux_transport_template) 2724 return -ENODEV; 2725 2726 scsi_transport_reserve_device(ahd_linux_transport_template, 2727 sizeof(struct ahd_linux_device)); 2728 2729 error = ahd_linux_pci_init(); 2730 if (error) 2731 spi_release_transport(ahd_linux_transport_template); 2732 return error; 2733} 2734 2735static void __exit 2736ahd_linux_exit(void) 2737{ 2738 ahd_linux_pci_exit(); 2739 spi_release_transport(ahd_linux_transport_template); 2740} 2741 2742module_init(ahd_linux_init); 2743module_exit(ahd_linux_exit); 2744