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/* Name space conflict with BSD queue macros */ 69#ifdef LIST_HEAD 70#undef LIST_HEAD 71#endif 72 73#include "cam.h" 74#include "queue.h" 75#include "scsi_message.h" 76#include "scsi_iu.h" 77#include "aiclib.h" 78 79/*********************************** Debugging ********************************/ 80#ifdef CONFIG_AIC79XX_DEBUG_ENABLE 81#ifdef CONFIG_AIC79XX_DEBUG_MASK 82#define AHD_DEBUG 1 83#define AHD_DEBUG_OPTS CONFIG_AIC79XX_DEBUG_MASK 84#else 85/* 86 * Compile in debugging code, but do not enable any printfs. 87 */ 88#define AHD_DEBUG 1 89#define AHD_DEBUG_OPTS 0 90#endif 91/* No debugging code. */ 92#endif 93 94/********************************** Misc Macros *******************************/ 95#define powerof2(x) ((((x)-1)&(x))==0) 96 97/************************* Forward Declarations *******************************/ 98struct ahd_softc; 99typedef struct pci_dev *ahd_dev_softc_t; 100typedef struct scsi_cmnd *ahd_io_ctx_t; 101 102/******************************* Byte Order ***********************************/ 103#define ahd_htobe16(x) cpu_to_be16(x) 104#define ahd_htobe32(x) cpu_to_be32(x) 105#define ahd_htobe64(x) cpu_to_be64(x) 106#define ahd_htole16(x) cpu_to_le16(x) 107#define ahd_htole32(x) cpu_to_le32(x) 108#define ahd_htole64(x) cpu_to_le64(x) 109 110#define ahd_be16toh(x) be16_to_cpu(x) 111#define ahd_be32toh(x) be32_to_cpu(x) 112#define ahd_be64toh(x) be64_to_cpu(x) 113#define ahd_le16toh(x) le16_to_cpu(x) 114#define ahd_le32toh(x) le32_to_cpu(x) 115#define ahd_le64toh(x) le64_to_cpu(x) 116 117/************************* Configuration Data *********************************/ 118extern uint32_t aic79xx_allow_memio; 119extern struct scsi_host_template aic79xx_driver_template; 120 121/***************************** Bus Space/DMA **********************************/ 122 123typedef uint32_t bus_size_t; 124 125typedef enum { 126 BUS_SPACE_MEMIO, 127 BUS_SPACE_PIO 128} bus_space_tag_t; 129 130typedef union { 131 u_long ioport; 132 volatile uint8_t __iomem *maddr; 133} bus_space_handle_t; 134 135typedef struct bus_dma_segment 136{ 137 dma_addr_t ds_addr; 138 bus_size_t ds_len; 139} bus_dma_segment_t; 140 141struct ahd_linux_dma_tag 142{ 143 bus_size_t alignment; 144 bus_size_t boundary; 145 bus_size_t maxsize; 146}; 147typedef struct ahd_linux_dma_tag* bus_dma_tag_t; 148 149typedef dma_addr_t bus_dmamap_t; 150 151typedef int bus_dma_filter_t(void*, dma_addr_t); 152typedef void bus_dmamap_callback_t(void *, bus_dma_segment_t *, int, int); 153 154#define BUS_DMA_WAITOK 0x0 155#define BUS_DMA_NOWAIT 0x1 156#define BUS_DMA_ALLOCNOW 0x2 157#define BUS_DMA_LOAD_SEGS 0x4 /* 158 * Argument is an S/G list not 159 * a single buffer. 160 */ 161 162#define BUS_SPACE_MAXADDR 0xFFFFFFFF 163#define BUS_SPACE_MAXADDR_32BIT 0xFFFFFFFF 164#define BUS_SPACE_MAXSIZE_32BIT 0xFFFFFFFF 165 166int ahd_dma_tag_create(struct ahd_softc *, bus_dma_tag_t /*parent*/, 167 bus_size_t /*alignment*/, bus_size_t /*boundary*/, 168 dma_addr_t /*lowaddr*/, dma_addr_t /*highaddr*/, 169 bus_dma_filter_t*/*filter*/, void */*filterarg*/, 170 bus_size_t /*maxsize*/, int /*nsegments*/, 171 bus_size_t /*maxsegsz*/, int /*flags*/, 172 bus_dma_tag_t */*dma_tagp*/); 173 174void ahd_dma_tag_destroy(struct ahd_softc *, bus_dma_tag_t /*tag*/); 175 176int ahd_dmamem_alloc(struct ahd_softc *, bus_dma_tag_t /*dmat*/, 177 void** /*vaddr*/, int /*flags*/, 178 bus_dmamap_t* /*mapp*/); 179 180void ahd_dmamem_free(struct ahd_softc *, bus_dma_tag_t /*dmat*/, 181 void* /*vaddr*/, bus_dmamap_t /*map*/); 182 183void ahd_dmamap_destroy(struct ahd_softc *, bus_dma_tag_t /*tag*/, 184 bus_dmamap_t /*map*/); 185 186int ahd_dmamap_load(struct ahd_softc *ahd, bus_dma_tag_t /*dmat*/, 187 bus_dmamap_t /*map*/, void * /*buf*/, 188 bus_size_t /*buflen*/, bus_dmamap_callback_t *, 189 void */*callback_arg*/, int /*flags*/); 190 191int ahd_dmamap_unload(struct ahd_softc *, bus_dma_tag_t, bus_dmamap_t); 192 193/* 194 * Operations performed by ahd_dmamap_sync(). 195 */ 196#define BUS_DMASYNC_PREREAD 0x01 /* pre-read synchronization */ 197#define BUS_DMASYNC_POSTREAD 0x02 /* post-read synchronization */ 198#define BUS_DMASYNC_PREWRITE 0x04 /* pre-write synchronization */ 199#define BUS_DMASYNC_POSTWRITE 0x08 /* post-write synchronization */ 200 201#define ahd_dmamap_sync(ahd, dma_tag, dmamap, offset, len, op) 202 203/************************** Timer DataStructures ******************************/ 204typedef struct timer_list ahd_timer_t; 205 206/********************************** Includes **********************************/ 207#ifdef CONFIG_AIC79XX_REG_PRETTY_PRINT 208#define AIC_DEBUG_REGISTERS 1 209#else 210#define AIC_DEBUG_REGISTERS 0 211#endif 212#include "aic79xx.h" 213 214/***************************** Timer Facilities *******************************/ 215#define ahd_timer_init init_timer 216#define ahd_timer_stop del_timer_sync 217 218/***************************** SMP support ************************************/ 219#include <linux/spinlock.h> 220 221#define AIC79XX_DRIVER_VERSION "3.0" 222 223/*************************** Device Data Structures ***************************/ 224/* 225 * A per probed device structure used to deal with some error recovery 226 * scenarios that the Linux mid-layer code just doesn't know how to 227 * handle. The structure allocated for a device only becomes persistent 228 * after a successfully completed inquiry command to the target when 229 * that inquiry data indicates a lun is present. 230 */ 231 232typedef enum { 233 AHD_DEV_FREEZE_TIL_EMPTY = 0x02, /* Freeze queue until active == 0 */ 234 AHD_DEV_Q_BASIC = 0x10, /* Allow basic device queuing */ 235 AHD_DEV_Q_TAGGED = 0x20, /* Allow full SCSI2 command queueing */ 236 AHD_DEV_PERIODIC_OTAG = 0x40, /* Send OTAG to prevent starvation */ 237} ahd_linux_dev_flags; 238 239struct ahd_linux_device { 240 TAILQ_ENTRY(ahd_linux_device) links; 241 242 /* 243 * The number of transactions currently 244 * queued to the device. 245 */ 246 int active; 247 248 /* 249 * The currently allowed number of 250 * transactions that can be queued to 251 * the device. Must be signed for 252 * conversion from tagged to untagged 253 * mode where the device may have more 254 * than one outstanding active transaction. 255 */ 256 int openings; 257 258 /* 259 * A positive count indicates that this 260 * device's queue is halted. 261 */ 262 u_int qfrozen; 263 264 /* 265 * Cumulative command counter. 266 */ 267 u_long commands_issued; 268 269 /* 270 * The number of tagged transactions when 271 * running at our current opening level 272 * that have been successfully received by 273 * this device since the last QUEUE FULL. 274 */ 275 u_int tag_success_count; 276#define AHD_TAG_SUCCESS_INTERVAL 50 277 278 ahd_linux_dev_flags flags; 279 280 /* 281 * Per device timer. 282 */ 283 struct timer_list timer; 284 285 /* 286 * The high limit for the tags variable. 287 */ 288 u_int maxtags; 289 290 /* 291 * The computed number of tags outstanding 292 * at the time of the last QUEUE FULL event. 293 */ 294 u_int tags_on_last_queuefull; 295 296 /* 297 * How many times we have seen a queue full 298 * with the same number of tags. This is used 299 * to stop our adaptive queue depth algorithm 300 * on devices with a fixed number of tags. 301 */ 302 u_int last_queuefull_same_count; 303#define AHD_LOCK_TAGS_COUNT 50 304 305 /* 306 * How many transactions have been queued 307 * without the device going idle. We use 308 * this statistic to determine when to issue 309 * an ordered tag to prevent transaction 310 * starvation. This statistic is only updated 311 * if the AHD_DEV_PERIODIC_OTAG flag is set 312 * on this device. 313 */ 314 u_int commands_since_idle_or_otag; 315#define AHD_OTAG_THRESH 500 316}; 317 318/********************* Definitions Required by the Core ***********************/ 319/* 320 * Number of SG segments we require. So long as the S/G segments for 321 * a particular transaction are allocated in a physically contiguous 322 * manner and are allocated below 4GB, the number of S/G segments is 323 * unrestricted. 324 */ 325#define AHD_NSEG 128 326 327/* 328 * Per-SCB OSM storage. 329 */ 330struct scb_platform_data { 331 struct ahd_linux_device *dev; 332 dma_addr_t buf_busaddr; 333 uint32_t xfer_len; 334 uint32_t sense_resid; /* Auto-Sense residual */ 335}; 336 337/* 338 * Define a structure used for each host adapter. All members are 339 * aligned on a boundary >= the size of the member to honor the 340 * alignment restrictions of the various platforms supported by 341 * this driver. 342 */ 343struct ahd_platform_data { 344 /* 345 * Fields accessed from interrupt context. 346 */ 347 struct scsi_target *starget[AHD_NUM_TARGETS]; 348 349 spinlock_t spin_lock; 350 struct completion *eh_done; 351 struct Scsi_Host *host; /* pointer to scsi host */ 352#define AHD_LINUX_NOIRQ ((uint32_t)~0) 353 uint32_t irq; /* IRQ for this adapter */ 354 uint32_t bios_address; 355 resource_size_t mem_busaddr; /* Mem Base Addr */ 356}; 357 358void ahd_delay(long); 359 360/***************************** Low Level I/O **********************************/ 361uint8_t ahd_inb(struct ahd_softc * ahd, long port); 362void ahd_outb(struct ahd_softc * ahd, long port, uint8_t val); 363void ahd_outw_atomic(struct ahd_softc * ahd, 364 long port, uint16_t val); 365void ahd_outsb(struct ahd_softc * ahd, long port, 366 uint8_t *, int count); 367void ahd_insb(struct ahd_softc * ahd, long port, 368 uint8_t *, int count); 369 370/**************************** Initialization **********************************/ 371int ahd_linux_register_host(struct ahd_softc *, 372 struct scsi_host_template *); 373 374/*************************** Pretty Printing **********************************/ 375struct info_str { 376 char *buffer; 377 int length; 378 off_t offset; 379 int pos; 380}; 381 382/******************************** Locking *************************************/ 383static inline void 384ahd_lockinit(struct ahd_softc *ahd) 385{ 386 spin_lock_init(&ahd->platform_data->spin_lock); 387} 388 389static inline void 390ahd_lock(struct ahd_softc *ahd, unsigned long *flags) 391{ 392 spin_lock_irqsave(&ahd->platform_data->spin_lock, *flags); 393} 394 395static inline void 396ahd_unlock(struct ahd_softc *ahd, unsigned long *flags) 397{ 398 spin_unlock_irqrestore(&ahd->platform_data->spin_lock, *flags); 399} 400 401/******************************* PCI Definitions ******************************/ 402/* 403 * PCIM_xxx: mask to locate subfield in register 404 * PCIR_xxx: config register offset 405 * PCIC_xxx: device class 406 * PCIS_xxx: device subclass 407 * PCIP_xxx: device programming interface 408 * PCIV_xxx: PCI vendor ID (only required to fixup ancient devices) 409 * PCID_xxx: device ID 410 */ 411#define PCIR_DEVVENDOR 0x00 412#define PCIR_VENDOR 0x00 413#define PCIR_DEVICE 0x02 414#define PCIR_COMMAND 0x04 415#define PCIM_CMD_PORTEN 0x0001 416#define PCIM_CMD_MEMEN 0x0002 417#define PCIM_CMD_BUSMASTEREN 0x0004 418#define PCIM_CMD_MWRICEN 0x0010 419#define PCIM_CMD_PERRESPEN 0x0040 420#define PCIM_CMD_SERRESPEN 0x0100 421#define PCIR_STATUS 0x06 422#define PCIR_REVID 0x08 423#define PCIR_PROGIF 0x09 424#define PCIR_SUBCLASS 0x0a 425#define PCIR_CLASS 0x0b 426#define PCIR_CACHELNSZ 0x0c 427#define PCIR_LATTIMER 0x0d 428#define PCIR_HEADERTYPE 0x0e 429#define PCIM_MFDEV 0x80 430#define PCIR_BIST 0x0f 431#define PCIR_CAP_PTR 0x34 432 433/* config registers for header type 0 devices */ 434#define PCIR_MAPS 0x10 435#define PCIR_SUBVEND_0 0x2c 436#define PCIR_SUBDEV_0 0x2e 437 438/****************************** PCI-X definitions *****************************/ 439#define PCIXR_COMMAND 0x96 440#define PCIXR_DEVADDR 0x98 441#define PCIXM_DEVADDR_FNUM 0x0003 /* Function Number */ 442#define PCIXM_DEVADDR_DNUM 0x00F8 /* Device Number */ 443#define PCIXM_DEVADDR_BNUM 0xFF00 /* Bus Number */ 444#define PCIXR_STATUS 0x9A 445#define PCIXM_STATUS_64BIT 0x0001 /* Active 64bit connection to device. */ 446#define PCIXM_STATUS_133CAP 0x0002 /* Device is 133MHz capable */ 447#define PCIXM_STATUS_SCDISC 0x0004 /* Split Completion Discarded */ 448#define PCIXM_STATUS_UNEXPSC 0x0008 /* Unexpected Split Completion */ 449#define PCIXM_STATUS_CMPLEXDEV 0x0010 /* Device Complexity (set == bridge) */ 450#define PCIXM_STATUS_MAXMRDBC 0x0060 /* Maximum Burst Read Count */ 451#define PCIXM_STATUS_MAXSPLITS 0x0380 /* Maximum Split Transactions */ 452#define PCIXM_STATUS_MAXCRDS 0x1C00 /* Maximum Cumulative Read Size */ 453#define PCIXM_STATUS_RCVDSCEM 0x2000 /* Received a Split Comp w/Error msg */ 454 455typedef enum 456{ 457 AHD_POWER_STATE_D0, 458 AHD_POWER_STATE_D1, 459 AHD_POWER_STATE_D2, 460 AHD_POWER_STATE_D3 461} ahd_power_state; 462 463void ahd_power_state_change(struct ahd_softc *ahd, 464 ahd_power_state new_state); 465 466/******************************* PCI Routines *********************************/ 467int ahd_linux_pci_init(void); 468void ahd_linux_pci_exit(void); 469int ahd_pci_map_registers(struct ahd_softc *ahd); 470int ahd_pci_map_int(struct ahd_softc *ahd); 471 472uint32_t ahd_pci_read_config(ahd_dev_softc_t pci, 473 int reg, int width); 474void ahd_pci_write_config(ahd_dev_softc_t pci, 475 int reg, uint32_t value, 476 int width); 477 478static inline int ahd_get_pci_function(ahd_dev_softc_t); 479static inline int 480ahd_get_pci_function(ahd_dev_softc_t pci) 481{ 482 return (PCI_FUNC(pci->devfn)); 483} 484 485static inline int ahd_get_pci_slot(ahd_dev_softc_t); 486static inline int 487ahd_get_pci_slot(ahd_dev_softc_t pci) 488{ 489 return (PCI_SLOT(pci->devfn)); 490} 491 492static inline int ahd_get_pci_bus(ahd_dev_softc_t); 493static inline int 494ahd_get_pci_bus(ahd_dev_softc_t pci) 495{ 496 return (pci->bus->number); 497} 498 499static inline void ahd_flush_device_writes(struct ahd_softc *); 500static inline void 501ahd_flush_device_writes(struct ahd_softc *ahd) 502{ 503 ahd_inb(ahd, INTSTAT); 504} 505 506/**************************** Proc FS Support *********************************/ 507int ahd_linux_proc_info(struct Scsi_Host *, char *, char **, 508 off_t, int, int); 509 510/*********************** Transaction Access Wrappers **************************/ 511static inline void ahd_cmd_set_transaction_status(struct scsi_cmnd *, uint32_t); 512static inline void ahd_set_transaction_status(struct scb *, uint32_t); 513static inline void ahd_cmd_set_scsi_status(struct scsi_cmnd *, uint32_t); 514static inline void ahd_set_scsi_status(struct scb *, uint32_t); 515static inline uint32_t ahd_cmd_get_transaction_status(struct scsi_cmnd *cmd); 516static inline uint32_t ahd_get_transaction_status(struct scb *); 517static inline uint32_t ahd_cmd_get_scsi_status(struct scsi_cmnd *cmd); 518static inline uint32_t ahd_get_scsi_status(struct scb *); 519static inline void ahd_set_transaction_tag(struct scb *, int, u_int); 520static inline u_long ahd_get_transfer_length(struct scb *); 521static inline int ahd_get_transfer_dir(struct scb *); 522static inline void ahd_set_residual(struct scb *, u_long); 523static inline void ahd_set_sense_residual(struct scb *scb, u_long resid); 524static inline u_long ahd_get_residual(struct scb *); 525static inline u_long ahd_get_sense_residual(struct scb *); 526static inline int ahd_perform_autosense(struct scb *); 527static inline uint32_t ahd_get_sense_bufsize(struct ahd_softc *, 528 struct scb *); 529static inline void ahd_notify_xfer_settings_change(struct ahd_softc *, 530 struct ahd_devinfo *); 531static inline void ahd_platform_scb_free(struct ahd_softc *ahd, 532 struct scb *scb); 533static inline void ahd_freeze_scb(struct scb *scb); 534 535static inline 536void ahd_cmd_set_transaction_status(struct scsi_cmnd *cmd, uint32_t status) 537{ 538 cmd->result &= ~(CAM_STATUS_MASK << 16); 539 cmd->result |= status << 16; 540} 541 542static inline 543void ahd_set_transaction_status(struct scb *scb, uint32_t status) 544{ 545 ahd_cmd_set_transaction_status(scb->io_ctx,status); 546} 547 548static inline 549void ahd_cmd_set_scsi_status(struct scsi_cmnd *cmd, uint32_t status) 550{ 551 cmd->result &= ~0xFFFF; 552 cmd->result |= status; 553} 554 555static inline 556void ahd_set_scsi_status(struct scb *scb, uint32_t status) 557{ 558 ahd_cmd_set_scsi_status(scb->io_ctx, status); 559} 560 561static inline 562uint32_t ahd_cmd_get_transaction_status(struct scsi_cmnd *cmd) 563{ 564 return ((cmd->result >> 16) & CAM_STATUS_MASK); 565} 566 567static inline 568uint32_t ahd_get_transaction_status(struct scb *scb) 569{ 570 return (ahd_cmd_get_transaction_status(scb->io_ctx)); 571} 572 573static inline 574uint32_t ahd_cmd_get_scsi_status(struct scsi_cmnd *cmd) 575{ 576 return (cmd->result & 0xFFFF); 577} 578 579static inline 580uint32_t ahd_get_scsi_status(struct scb *scb) 581{ 582 return (ahd_cmd_get_scsi_status(scb->io_ctx)); 583} 584 585static inline 586void ahd_set_transaction_tag(struct scb *scb, int enabled, u_int type) 587{ 588 /* 589 * Nothing to do for linux as the incoming transaction 590 * has no concept of tag/non tagged, etc. 591 */ 592} 593 594static inline 595u_long ahd_get_transfer_length(struct scb *scb) 596{ 597 return (scb->platform_data->xfer_len); 598} 599 600static inline 601int ahd_get_transfer_dir(struct scb *scb) 602{ 603 return (scb->io_ctx->sc_data_direction); 604} 605 606static inline 607void ahd_set_residual(struct scb *scb, u_long resid) 608{ 609 scsi_set_resid(scb->io_ctx, resid); 610} 611 612static inline 613void ahd_set_sense_residual(struct scb *scb, u_long resid) 614{ 615 scb->platform_data->sense_resid = resid; 616} 617 618static inline 619u_long ahd_get_residual(struct scb *scb) 620{ 621 return scsi_get_resid(scb->io_ctx); 622} 623 624static inline 625u_long ahd_get_sense_residual(struct scb *scb) 626{ 627 return (scb->platform_data->sense_resid); 628} 629 630static inline 631int ahd_perform_autosense(struct scb *scb) 632{ 633 /* 634 * We always perform autosense in Linux. 635 * On other platforms this is set on a 636 * per-transaction basis. 637 */ 638 return (1); 639} 640 641static inline uint32_t 642ahd_get_sense_bufsize(struct ahd_softc *ahd, struct scb *scb) 643{ 644 return (sizeof(struct scsi_sense_data)); 645} 646 647static inline void 648ahd_notify_xfer_settings_change(struct ahd_softc *ahd, 649 struct ahd_devinfo *devinfo) 650{ 651 /* Nothing to do here for linux */ 652} 653 654static inline void 655ahd_platform_scb_free(struct ahd_softc *ahd, struct scb *scb) 656{ 657 ahd->flags &= ~AHD_RESOURCE_SHORTAGE; 658} 659 660int ahd_platform_alloc(struct ahd_softc *ahd, void *platform_arg); 661void ahd_platform_free(struct ahd_softc *ahd); 662void ahd_platform_init(struct ahd_softc *ahd); 663void ahd_platform_freeze_devq(struct ahd_softc *ahd, struct scb *scb); 664 665static inline void 666ahd_freeze_scb(struct scb *scb) 667{ 668 if ((scb->io_ctx->result & (CAM_DEV_QFRZN << 16)) == 0) { 669 scb->io_ctx->result |= CAM_DEV_QFRZN << 16; 670 scb->platform_data->dev->qfrozen++; 671 } 672} 673 674void ahd_platform_set_tags(struct ahd_softc *ahd, struct scsi_device *sdev, 675 struct ahd_devinfo *devinfo, ahd_queue_alg); 676int ahd_platform_abort_scbs(struct ahd_softc *ahd, int target, 677 char channel, int lun, u_int tag, 678 role_t role, uint32_t status); 679irqreturn_t 680 ahd_linux_isr(int irq, void *dev_id); 681void ahd_done(struct ahd_softc*, struct scb*); 682void ahd_send_async(struct ahd_softc *, char channel, 683 u_int target, u_int lun, ac_code); 684void ahd_print_path(struct ahd_softc *, struct scb *); 685 686#ifdef CONFIG_PCI 687#define AHD_PCI_CONFIG 1 688#else 689#define AHD_PCI_CONFIG 0 690#endif 691#define bootverbose aic79xx_verbose 692extern uint32_t aic79xx_verbose; 693 694#endif /* _AIC79XX_LINUX_H_ */ 695