1 /* 2 * Adaptec AIC79xx device driver for Linux. 3 * 4 * Copyright (c) 2000-2001 Adaptec Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions, and the following disclaimer, 12 * without modification. 13 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 14 * substantially similar to the "NO WARRANTY" disclaimer below 15 * ("Disclaimer") and any redistribution must be conditioned upon 16 * including a substantially similar Disclaimer requirement for further 17 * binary redistribution. 18 * 3. Neither the names of the above-listed copyright holders nor the names 19 * of any contributors may be used to endorse or promote products derived 20 * from this software without specific prior written permission. 21 * 22 * Alternatively, this software may be distributed under the terms of the 23 * GNU General Public License ("GPL") version 2 as published by the Free 24 * Software Foundation. 25 * 26 * NO WARRANTY 27 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 28 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 29 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 30 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 31 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 35 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 36 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGES. 38 * 39 * $Id: //depot/aic7xxx/linux/drivers/scsi/aic7xxx/aic79xx_osm.h#166 $ 40 * 41 */ 42 #ifndef _AIC79XX_LINUX_H_ 43 #define _AIC79XX_LINUX_H_ 44 45 #include <linux/types.h> 46 #include <linux/blkdev.h> 47 #include <linux/delay.h> 48 #include <linux/ioport.h> 49 #include <linux/pci.h> 50 #include <linux/interrupt.h> 51 #include <linux/module.h> 52 #include <linux/slab.h> 53 #include <asm/byteorder.h> 54 #include <asm/io.h> 55 56 #include <scsi/scsi.h> 57 #include <scsi/scsi_cmnd.h> 58 #include <scsi/scsi_eh.h> 59 #include <scsi/scsi_device.h> 60 #include <scsi/scsi_host.h> 61 #include <scsi/scsi_tcq.h> 62 #include <scsi/scsi_transport.h> 63 #include <scsi/scsi_transport_spi.h> 64 65 /* Core SCSI definitions */ 66 #define AIC_LIB_PREFIX ahd 67 68 #include "cam.h" 69 #include "queue.h" 70 #include "scsi_message.h" 71 #include "scsi_iu.h" 72 #include "aiclib.h" 73 74 /*********************************** Debugging ********************************/ 75 #ifdef CONFIG_AIC79XX_DEBUG_ENABLE 76 #ifdef CONFIG_AIC79XX_DEBUG_MASK 77 #define AHD_DEBUG 1 78 #define AHD_DEBUG_OPTS CONFIG_AIC79XX_DEBUG_MASK 79 #else 80 /* 81 * Compile in debugging code, but do not enable any printfs. 82 */ 83 #define AHD_DEBUG 1 84 #define AHD_DEBUG_OPTS 0 85 #endif 86 /* No debugging code. */ 87 #endif 88 89 /********************************** Misc Macros *******************************/ 90 #define powerof2(x) ((((x)-1)&(x))==0) 91 92 /************************* Forward Declarations *******************************/ 93 struct ahd_softc; 94 typedef struct pci_dev *ahd_dev_softc_t; 95 typedef struct scsi_cmnd *ahd_io_ctx_t; 96 97 /******************************* Byte Order ***********************************/ 98 #define ahd_htobe16(x) cpu_to_be16(x) 99 #define ahd_htobe32(x) cpu_to_be32(x) 100 #define ahd_htobe64(x) cpu_to_be64(x) 101 #define ahd_htole16(x) cpu_to_le16(x) 102 #define ahd_htole32(x) cpu_to_le32(x) 103 #define ahd_htole64(x) cpu_to_le64(x) 104 105 #define ahd_be16toh(x) be16_to_cpu(x) 106 #define ahd_be32toh(x) be32_to_cpu(x) 107 #define ahd_be64toh(x) be64_to_cpu(x) 108 #define ahd_le16toh(x) le16_to_cpu(x) 109 #define ahd_le32toh(x) le32_to_cpu(x) 110 #define ahd_le64toh(x) le64_to_cpu(x) 111 112 /************************* Configuration Data *********************************/ 113 extern uint32_t aic79xx_allow_memio; 114 extern struct scsi_host_template aic79xx_driver_template; 115 116 /***************************** Bus Space/DMA **********************************/ 117 118 typedef uint32_t bus_size_t; 119 120 typedef enum { 121 BUS_SPACE_MEMIO, 122 BUS_SPACE_PIO 123 } bus_space_tag_t; 124 125 typedef union { 126 u_long ioport; 127 volatile uint8_t __iomem *maddr; 128 } bus_space_handle_t; 129 130 typedef struct bus_dma_segment 131 { 132 dma_addr_t ds_addr; 133 bus_size_t ds_len; 134 } bus_dma_segment_t; 135 136 struct ahd_linux_dma_tag 137 { 138 bus_size_t alignment; 139 bus_size_t boundary; 140 bus_size_t maxsize; 141 }; 142 typedef struct ahd_linux_dma_tag* bus_dma_tag_t; 143 144 typedef dma_addr_t bus_dmamap_t; 145 146 typedef int bus_dma_filter_t(void*, dma_addr_t); 147 typedef void bus_dmamap_callback_t(void *, bus_dma_segment_t *, int, int); 148 149 #define BUS_DMA_WAITOK 0x0 150 #define BUS_DMA_NOWAIT 0x1 151 #define BUS_DMA_ALLOCNOW 0x2 152 #define BUS_DMA_LOAD_SEGS 0x4 /* 153 * Argument is an S/G list not 154 * a single buffer. 155 */ 156 157 #define BUS_SPACE_MAXADDR 0xFFFFFFFF 158 #define BUS_SPACE_MAXADDR_32BIT 0xFFFFFFFF 159 #define BUS_SPACE_MAXSIZE_32BIT 0xFFFFFFFF 160 161 int ahd_dma_tag_create(struct ahd_softc *, bus_dma_tag_t /*parent*/, 162 bus_size_t /*alignment*/, bus_size_t /*boundary*/, 163 dma_addr_t /*lowaddr*/, dma_addr_t /*highaddr*/, 164 bus_dma_filter_t*/*filter*/, void */*filterarg*/, 165 bus_size_t /*maxsize*/, int /*nsegments*/, 166 bus_size_t /*maxsegsz*/, int /*flags*/, 167 bus_dma_tag_t */*dma_tagp*/); 168 169 void ahd_dma_tag_destroy(struct ahd_softc *, bus_dma_tag_t /*tag*/); 170 171 int ahd_dmamem_alloc(struct ahd_softc *, bus_dma_tag_t /*dmat*/, 172 void** /*vaddr*/, int /*flags*/, 173 bus_dmamap_t* /*mapp*/); 174 175 void ahd_dmamem_free(struct ahd_softc *, bus_dma_tag_t /*dmat*/, 176 void* /*vaddr*/, bus_dmamap_t /*map*/); 177 178 void ahd_dmamap_destroy(struct ahd_softc *, bus_dma_tag_t /*tag*/, 179 bus_dmamap_t /*map*/); 180 181 int ahd_dmamap_load(struct ahd_softc *ahd, bus_dma_tag_t /*dmat*/, 182 bus_dmamap_t /*map*/, void * /*buf*/, 183 bus_size_t /*buflen*/, bus_dmamap_callback_t *, 184 void */*callback_arg*/, int /*flags*/); 185 186 int ahd_dmamap_unload(struct ahd_softc *, bus_dma_tag_t, bus_dmamap_t); 187 188 /* 189 * Operations performed by ahd_dmamap_sync(). 190 */ 191 #define BUS_DMASYNC_PREREAD 0x01 /* pre-read synchronization */ 192 #define BUS_DMASYNC_POSTREAD 0x02 /* post-read synchronization */ 193 #define BUS_DMASYNC_PREWRITE 0x04 /* pre-write synchronization */ 194 #define BUS_DMASYNC_POSTWRITE 0x08 /* post-write synchronization */ 195 196 /* 197 * XXX 198 * ahd_dmamap_sync is only used on buffers allocated with 199 * the pci_alloc_consistent() API. Although I'm not sure how 200 * this works on architectures with a write buffer, Linux does 201 * not have an API to sync "coherent" memory. Perhaps we need 202 * to do an mb()? 203 */ 204 #define ahd_dmamap_sync(ahd, dma_tag, dmamap, offset, len, op) 205 206 /************************** Timer DataStructures ******************************/ 207 typedef struct timer_list ahd_timer_t; 208 209 /********************************** Includes **********************************/ 210 #ifdef CONFIG_AIC79XX_REG_PRETTY_PRINT 211 #define AIC_DEBUG_REGISTERS 1 212 #else 213 #define AIC_DEBUG_REGISTERS 0 214 #endif 215 #include "aic79xx.h" 216 217 /***************************** Timer Facilities *******************************/ 218 #define ahd_timer_init init_timer 219 #define ahd_timer_stop del_timer_sync 220 221 /***************************** SMP support ************************************/ 222 #include <linux/spinlock.h> 223 224 #define AIC79XX_DRIVER_VERSION "3.0" 225 226 /*************************** Device Data Structures ***************************/ 227 /* 228 * A per probed device structure used to deal with some error recovery 229 * scenarios that the Linux mid-layer code just doesn't know how to 230 * handle. The structure allocated for a device only becomes persistent 231 * after a successfully completed inquiry command to the target when 232 * that inquiry data indicates a lun is present. 233 */ 234 235 typedef enum { 236 AHD_DEV_FREEZE_TIL_EMPTY = 0x02, /* Freeze queue until active == 0 */ 237 AHD_DEV_Q_BASIC = 0x10, /* Allow basic device queuing */ 238 AHD_DEV_Q_TAGGED = 0x20, /* Allow full SCSI2 command queueing */ 239 AHD_DEV_PERIODIC_OTAG = 0x40, /* Send OTAG to prevent starvation */ 240 } ahd_linux_dev_flags; 241 242 struct ahd_linux_device { 243 TAILQ_ENTRY(ahd_linux_device) links; 244 245 /* 246 * The number of transactions currently 247 * queued to the device. 248 */ 249 int active; 250 251 /* 252 * The currently allowed number of 253 * transactions that can be queued to 254 * the device. Must be signed for 255 * conversion from tagged to untagged 256 * mode where the device may have more 257 * than one outstanding active transaction. 258 */ 259 int openings; 260 261 /* 262 * A positive count indicates that this 263 * device's queue is halted. 264 */ 265 u_int qfrozen; 266 267 /* 268 * Cumulative command counter. 269 */ 270 u_long commands_issued; 271 272 /* 273 * The number of tagged transactions when 274 * running at our current opening level 275 * that have been successfully received by 276 * this device since the last QUEUE FULL. 277 */ 278 u_int tag_success_count; 279 #define AHD_TAG_SUCCESS_INTERVAL 50 280 281 ahd_linux_dev_flags flags; 282 283 /* 284 * Per device timer. 285 */ 286 struct timer_list timer; 287 288 /* 289 * The high limit for the tags variable. 290 */ 291 u_int maxtags; 292 293 /* 294 * The computed number of tags outstanding 295 * at the time of the last QUEUE FULL event. 296 */ 297 u_int tags_on_last_queuefull; 298 299 /* 300 * How many times we have seen a queue full 301 * with the same number of tags. This is used 302 * to stop our adaptive queue depth algorithm 303 * on devices with a fixed number of tags. 304 */ 305 u_int last_queuefull_same_count; 306 #define AHD_LOCK_TAGS_COUNT 50 307 308 /* 309 * How many transactions have been queued 310 * without the device going idle. We use 311 * this statistic to determine when to issue 312 * an ordered tag to prevent transaction 313 * starvation. This statistic is only updated 314 * if the AHD_DEV_PERIODIC_OTAG flag is set 315 * on this device. 316 */ 317 u_int commands_since_idle_or_otag; 318 #define AHD_OTAG_THRESH 500 319 }; 320 321 /********************* Definitions Required by the Core ***********************/ 322 /* 323 * Number of SG segments we require. So long as the S/G segments for 324 * a particular transaction are allocated in a physically contiguous 325 * manner and are allocated below 4GB, the number of S/G segments is 326 * unrestricted. 327 */ 328 #define AHD_NSEG 128 329 330 /* 331 * Per-SCB OSM storage. 332 */ 333 struct scb_platform_data { 334 struct ahd_linux_device *dev; 335 dma_addr_t buf_busaddr; 336 uint32_t xfer_len; 337 uint32_t sense_resid; /* Auto-Sense residual */ 338 }; 339 340 /* 341 * Define a structure used for each host adapter. All members are 342 * aligned on a boundary >= the size of the member to honor the 343 * alignment restrictions of the various platforms supported by 344 * this driver. 345 */ 346 struct ahd_platform_data { 347 /* 348 * Fields accessed from interrupt context. 349 */ 350 struct scsi_target *starget[AHD_NUM_TARGETS]; 351 352 spinlock_t spin_lock; 353 struct completion *eh_done; 354 struct Scsi_Host *host; /* pointer to scsi host */ 355 #define AHD_LINUX_NOIRQ ((uint32_t)~0) 356 uint32_t irq; /* IRQ for this adapter */ 357 uint32_t bios_address; 358 resource_size_t mem_busaddr; /* Mem Base Addr */ 359 }; 360 361 void ahd_delay(long); 362 363 /***************************** Low Level I/O **********************************/ 364 uint8_t ahd_inb(struct ahd_softc * ahd, long port); 365 void ahd_outb(struct ahd_softc * ahd, long port, uint8_t val); 366 void ahd_outw_atomic(struct ahd_softc * ahd, 367 long port, uint16_t val); 368 void ahd_outsb(struct ahd_softc * ahd, long port, 369 uint8_t *, int count); 370 void ahd_insb(struct ahd_softc * ahd, long port, 371 uint8_t *, int count); 372 373 /**************************** Initialization **********************************/ 374 int ahd_linux_register_host(struct ahd_softc *, 375 struct scsi_host_template *); 376 377 /******************************** Locking *************************************/ 378 static inline void 379 ahd_lockinit(struct ahd_softc *ahd) 380 { 381 spin_lock_init(&ahd->platform_data->spin_lock); 382 } 383 384 static inline void 385 ahd_lock(struct ahd_softc *ahd, unsigned long *flags) 386 { 387 spin_lock_irqsave(&ahd->platform_data->spin_lock, *flags); 388 } 389 390 static inline void 391 ahd_unlock(struct ahd_softc *ahd, unsigned long *flags) 392 { 393 spin_unlock_irqrestore(&ahd->platform_data->spin_lock, *flags); 394 } 395 396 /******************************* PCI Definitions ******************************/ 397 /* 398 * PCIM_xxx: mask to locate subfield in register 399 * PCIR_xxx: config register offset 400 * PCIC_xxx: device class 401 * PCIS_xxx: device subclass 402 * PCIP_xxx: device programming interface 403 * PCIV_xxx: PCI vendor ID (only required to fixup ancient devices) 404 * PCID_xxx: device ID 405 */ 406 #define PCIR_DEVVENDOR 0x00 407 #define PCIR_VENDOR 0x00 408 #define PCIR_DEVICE 0x02 409 #define PCIR_COMMAND 0x04 410 #define PCIM_CMD_PORTEN 0x0001 411 #define PCIM_CMD_MEMEN 0x0002 412 #define PCIM_CMD_BUSMASTEREN 0x0004 413 #define PCIM_CMD_MWRICEN 0x0010 414 #define PCIM_CMD_PERRESPEN 0x0040 415 #define PCIM_CMD_SERRESPEN 0x0100 416 #define PCIR_STATUS 0x06 417 #define PCIR_REVID 0x08 418 #define PCIR_PROGIF 0x09 419 #define PCIR_SUBCLASS 0x0a 420 #define PCIR_CLASS 0x0b 421 #define PCIR_CACHELNSZ 0x0c 422 #define PCIR_LATTIMER 0x0d 423 #define PCIR_HEADERTYPE 0x0e 424 #define PCIM_MFDEV 0x80 425 #define PCIR_BIST 0x0f 426 #define PCIR_CAP_PTR 0x34 427 428 /* config registers for header type 0 devices */ 429 #define PCIR_MAPS 0x10 430 #define PCIR_SUBVEND_0 0x2c 431 #define PCIR_SUBDEV_0 0x2e 432 433 /****************************** PCI-X definitions *****************************/ 434 #define PCIXR_COMMAND 0x96 435 #define PCIXR_DEVADDR 0x98 436 #define PCIXM_DEVADDR_FNUM 0x0003 /* Function Number */ 437 #define PCIXM_DEVADDR_DNUM 0x00F8 /* Device Number */ 438 #define PCIXM_DEVADDR_BNUM 0xFF00 /* Bus Number */ 439 #define PCIXR_STATUS 0x9A 440 #define PCIXM_STATUS_64BIT 0x0001 /* Active 64bit connection to device. */ 441 #define PCIXM_STATUS_133CAP 0x0002 /* Device is 133MHz capable */ 442 #define PCIXM_STATUS_SCDISC 0x0004 /* Split Completion Discarded */ 443 #define PCIXM_STATUS_UNEXPSC 0x0008 /* Unexpected Split Completion */ 444 #define PCIXM_STATUS_CMPLEXDEV 0x0010 /* Device Complexity (set == bridge) */ 445 #define PCIXM_STATUS_MAXMRDBC 0x0060 /* Maximum Burst Read Count */ 446 #define PCIXM_STATUS_MAXSPLITS 0x0380 /* Maximum Split Transactions */ 447 #define PCIXM_STATUS_MAXCRDS 0x1C00 /* Maximum Cumulative Read Size */ 448 #define PCIXM_STATUS_RCVDSCEM 0x2000 /* Received a Split Comp w/Error msg */ 449 450 typedef enum 451 { 452 AHD_POWER_STATE_D0, 453 AHD_POWER_STATE_D1, 454 AHD_POWER_STATE_D2, 455 AHD_POWER_STATE_D3 456 } ahd_power_state; 457 458 void ahd_power_state_change(struct ahd_softc *ahd, 459 ahd_power_state new_state); 460 461 /******************************* PCI Routines *********************************/ 462 int ahd_linux_pci_init(void); 463 void ahd_linux_pci_exit(void); 464 int ahd_pci_map_registers(struct ahd_softc *ahd); 465 int ahd_pci_map_int(struct ahd_softc *ahd); 466 467 uint32_t ahd_pci_read_config(ahd_dev_softc_t pci, 468 int reg, int width); 469 void ahd_pci_write_config(ahd_dev_softc_t pci, 470 int reg, uint32_t value, 471 int width); 472 473 static inline int ahd_get_pci_function(ahd_dev_softc_t); 474 static inline int 475 ahd_get_pci_function(ahd_dev_softc_t pci) 476 { 477 return (PCI_FUNC(pci->devfn)); 478 } 479 480 static inline int ahd_get_pci_slot(ahd_dev_softc_t); 481 static inline int 482 ahd_get_pci_slot(ahd_dev_softc_t pci) 483 { 484 return (PCI_SLOT(pci->devfn)); 485 } 486 487 static inline int ahd_get_pci_bus(ahd_dev_softc_t); 488 static inline int 489 ahd_get_pci_bus(ahd_dev_softc_t pci) 490 { 491 return (pci->bus->number); 492 } 493 494 static inline void ahd_flush_device_writes(struct ahd_softc *); 495 static inline void 496 ahd_flush_device_writes(struct ahd_softc *ahd) 497 { 498 /* XXX Is this sufficient for all architectures??? */ 499 ahd_inb(ahd, INTSTAT); 500 } 501 502 /**************************** Proc FS Support *********************************/ 503 int ahd_proc_write_seeprom(struct Scsi_Host *, char *, int); 504 int ahd_linux_show_info(struct seq_file *,struct Scsi_Host *); 505 506 /*********************** Transaction Access Wrappers **************************/ 507 static inline void ahd_cmd_set_transaction_status(struct scsi_cmnd *, uint32_t); 508 static inline void ahd_set_transaction_status(struct scb *, uint32_t); 509 static inline void ahd_cmd_set_scsi_status(struct scsi_cmnd *, uint32_t); 510 static inline void ahd_set_scsi_status(struct scb *, uint32_t); 511 static inline uint32_t ahd_cmd_get_transaction_status(struct scsi_cmnd *cmd); 512 static inline uint32_t ahd_get_transaction_status(struct scb *); 513 static inline uint32_t ahd_cmd_get_scsi_status(struct scsi_cmnd *cmd); 514 static inline uint32_t ahd_get_scsi_status(struct scb *); 515 static inline void ahd_set_transaction_tag(struct scb *, int, u_int); 516 static inline u_long ahd_get_transfer_length(struct scb *); 517 static inline int ahd_get_transfer_dir(struct scb *); 518 static inline void ahd_set_residual(struct scb *, u_long); 519 static inline void ahd_set_sense_residual(struct scb *scb, u_long resid); 520 static inline u_long ahd_get_residual(struct scb *); 521 static inline u_long ahd_get_sense_residual(struct scb *); 522 static inline int ahd_perform_autosense(struct scb *); 523 static inline uint32_t ahd_get_sense_bufsize(struct ahd_softc *, 524 struct scb *); 525 static inline void ahd_notify_xfer_settings_change(struct ahd_softc *, 526 struct ahd_devinfo *); 527 static inline void ahd_platform_scb_free(struct ahd_softc *ahd, 528 struct scb *scb); 529 static inline void ahd_freeze_scb(struct scb *scb); 530 531 static inline 532 void ahd_cmd_set_transaction_status(struct scsi_cmnd *cmd, uint32_t status) 533 { 534 cmd->result &= ~(CAM_STATUS_MASK << 16); 535 cmd->result |= status << 16; 536 } 537 538 static inline 539 void ahd_set_transaction_status(struct scb *scb, uint32_t status) 540 { 541 ahd_cmd_set_transaction_status(scb->io_ctx,status); 542 } 543 544 static inline 545 void ahd_cmd_set_scsi_status(struct scsi_cmnd *cmd, uint32_t status) 546 { 547 cmd->result &= ~0xFFFF; 548 cmd->result |= status; 549 } 550 551 static inline 552 void ahd_set_scsi_status(struct scb *scb, uint32_t status) 553 { 554 ahd_cmd_set_scsi_status(scb->io_ctx, status); 555 } 556 557 static inline 558 uint32_t ahd_cmd_get_transaction_status(struct scsi_cmnd *cmd) 559 { 560 return ((cmd->result >> 16) & CAM_STATUS_MASK); 561 } 562 563 static inline 564 uint32_t ahd_get_transaction_status(struct scb *scb) 565 { 566 return (ahd_cmd_get_transaction_status(scb->io_ctx)); 567 } 568 569 static inline 570 uint32_t ahd_cmd_get_scsi_status(struct scsi_cmnd *cmd) 571 { 572 return (cmd->result & 0xFFFF); 573 } 574 575 static inline 576 uint32_t ahd_get_scsi_status(struct scb *scb) 577 { 578 return (ahd_cmd_get_scsi_status(scb->io_ctx)); 579 } 580 581 static inline 582 void ahd_set_transaction_tag(struct scb *scb, int enabled, u_int type) 583 { 584 /* 585 * Nothing to do for linux as the incoming transaction 586 * has no concept of tag/non tagged, etc. 587 */ 588 } 589 590 static inline 591 u_long ahd_get_transfer_length(struct scb *scb) 592 { 593 return (scb->platform_data->xfer_len); 594 } 595 596 static inline 597 int ahd_get_transfer_dir(struct scb *scb) 598 { 599 return (scb->io_ctx->sc_data_direction); 600 } 601 602 static inline 603 void ahd_set_residual(struct scb *scb, u_long resid) 604 { 605 scsi_set_resid(scb->io_ctx, resid); 606 } 607 608 static inline 609 void ahd_set_sense_residual(struct scb *scb, u_long resid) 610 { 611 scb->platform_data->sense_resid = resid; 612 } 613 614 static inline 615 u_long ahd_get_residual(struct scb *scb) 616 { 617 return scsi_get_resid(scb->io_ctx); 618 } 619 620 static inline 621 u_long ahd_get_sense_residual(struct scb *scb) 622 { 623 return (scb->platform_data->sense_resid); 624 } 625 626 static inline 627 int ahd_perform_autosense(struct scb *scb) 628 { 629 /* 630 * We always perform autosense in Linux. 631 * On other platforms this is set on a 632 * per-transaction basis. 633 */ 634 return (1); 635 } 636 637 static inline uint32_t 638 ahd_get_sense_bufsize(struct ahd_softc *ahd, struct scb *scb) 639 { 640 return (sizeof(struct scsi_sense_data)); 641 } 642 643 static inline void 644 ahd_notify_xfer_settings_change(struct ahd_softc *ahd, 645 struct ahd_devinfo *devinfo) 646 { 647 /* Nothing to do here for linux */ 648 } 649 650 static inline void 651 ahd_platform_scb_free(struct ahd_softc *ahd, struct scb *scb) 652 { 653 ahd->flags &= ~AHD_RESOURCE_SHORTAGE; 654 } 655 656 int ahd_platform_alloc(struct ahd_softc *ahd, void *platform_arg); 657 void ahd_platform_free(struct ahd_softc *ahd); 658 void ahd_platform_init(struct ahd_softc *ahd); 659 void ahd_platform_freeze_devq(struct ahd_softc *ahd, struct scb *scb); 660 661 static inline void 662 ahd_freeze_scb(struct scb *scb) 663 { 664 if ((scb->io_ctx->result & (CAM_DEV_QFRZN << 16)) == 0) { 665 scb->io_ctx->result |= CAM_DEV_QFRZN << 16; 666 scb->platform_data->dev->qfrozen++; 667 } 668 } 669 670 void ahd_platform_set_tags(struct ahd_softc *ahd, struct scsi_device *sdev, 671 struct ahd_devinfo *devinfo, ahd_queue_alg); 672 int ahd_platform_abort_scbs(struct ahd_softc *ahd, int target, 673 char channel, int lun, u_int tag, 674 role_t role, uint32_t status); 675 irqreturn_t 676 ahd_linux_isr(int irq, void *dev_id); 677 void ahd_done(struct ahd_softc*, struct scb*); 678 void ahd_send_async(struct ahd_softc *, char channel, 679 u_int target, u_int lun, ac_code); 680 void ahd_print_path(struct ahd_softc *, struct scb *); 681 682 #ifdef CONFIG_PCI 683 #define AHD_PCI_CONFIG 1 684 #else 685 #define AHD_PCI_CONFIG 0 686 #endif 687 #define bootverbose aic79xx_verbose 688 extern uint32_t aic79xx_verbose; 689 690 #endif /* _AIC79XX_LINUX_H_ */ 691