aic7xxx_osm.h revision dacee84b070c4e705a5b6446f1f0a6a6e2f8d7a4
1/* 2 * Adaptec AIC7xxx device driver for Linux. 3 * 4 * Copyright (c) 1994 John Aycock 5 * The University of Calgary Department of Computer Science. 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation; either version 2, or (at your option) 10 * any later version. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program; see the file COPYING. If not, write to 19 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. 20 * 21 * Copyright (c) 2000-2003 Adaptec Inc. 22 * All rights reserved. 23 * 24 * Redistribution and use in source and binary forms, with or without 25 * modification, are permitted provided that the following conditions 26 * are met: 27 * 1. Redistributions of source code must retain the above copyright 28 * notice, this list of conditions, and the following disclaimer, 29 * without modification. 30 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 31 * substantially similar to the "NO WARRANTY" disclaimer below 32 * ("Disclaimer") and any redistribution must be conditioned upon 33 * including a substantially similar Disclaimer requirement for further 34 * binary redistribution. 35 * 3. Neither the names of the above-listed copyright holders nor the names 36 * of any contributors may be used to endorse or promote products derived 37 * from this software without specific prior written permission. 38 * 39 * Alternatively, this software may be distributed under the terms of the 40 * GNU General Public License ("GPL") version 2 as published by the Free 41 * Software Foundation. 42 * 43 * NO WARRANTY 44 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 45 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 46 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 47 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 48 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 49 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 50 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 51 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 52 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 53 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 54 * POSSIBILITY OF SUCH DAMAGES. 55 * 56 * $Id: //depot/aic7xxx/linux/drivers/scsi/aic7xxx/aic7xxx_osm.h#151 $ 57 * 58 */ 59#ifndef _AIC7XXX_LINUX_H_ 60#define _AIC7XXX_LINUX_H_ 61 62#include <linux/config.h> 63#include <linux/types.h> 64#include <linux/blkdev.h> 65#include <linux/delay.h> 66#include <linux/ioport.h> 67#include <linux/pci.h> 68#include <linux/smp_lock.h> 69#include <linux/interrupt.h> 70#include <linux/module.h> 71#include <linux/slab.h> 72#include <asm/byteorder.h> 73#include <asm/io.h> 74 75#include <scsi/scsi.h> 76#include <scsi/scsi_cmnd.h> 77#include <scsi/scsi_eh.h> 78#include <scsi/scsi_device.h> 79#include <scsi/scsi_host.h> 80#include <scsi/scsi_tcq.h> 81#include <scsi/scsi_transport.h> 82#include <scsi/scsi_transport_spi.h> 83 84/* Core SCSI definitions */ 85#define AIC_LIB_PREFIX ahc 86 87/* Name space conflict with BSD queue macros */ 88#ifdef LIST_HEAD 89#undef LIST_HEAD 90#endif 91 92#include "cam.h" 93#include "queue.h" 94#include "scsi_message.h" 95#include "aiclib.h" 96 97/*********************************** Debugging ********************************/ 98#ifdef CONFIG_AIC7XXX_DEBUG_ENABLE 99#ifdef CONFIG_AIC7XXX_DEBUG_MASK 100#define AHC_DEBUG 1 101#define AHC_DEBUG_OPTS CONFIG_AIC7XXX_DEBUG_MASK 102#else 103/* 104 * Compile in debugging code, but do not enable any printfs. 105 */ 106#define AHC_DEBUG 1 107#endif 108/* No debugging code. */ 109#endif 110 111/************************* Forward Declarations *******************************/ 112struct ahc_softc; 113typedef struct pci_dev *ahc_dev_softc_t; 114typedef struct scsi_cmnd *ahc_io_ctx_t; 115 116/******************************* Byte Order ***********************************/ 117#define ahc_htobe16(x) cpu_to_be16(x) 118#define ahc_htobe32(x) cpu_to_be32(x) 119#define ahc_htobe64(x) cpu_to_be64(x) 120#define ahc_htole16(x) cpu_to_le16(x) 121#define ahc_htole32(x) cpu_to_le32(x) 122#define ahc_htole64(x) cpu_to_le64(x) 123 124#define ahc_be16toh(x) be16_to_cpu(x) 125#define ahc_be32toh(x) be32_to_cpu(x) 126#define ahc_be64toh(x) be64_to_cpu(x) 127#define ahc_le16toh(x) le16_to_cpu(x) 128#define ahc_le32toh(x) le32_to_cpu(x) 129#define ahc_le64toh(x) le64_to_cpu(x) 130 131/************************* Configuration Data *********************************/ 132extern u_int aic7xxx_no_probe; 133extern u_int aic7xxx_allow_memio; 134extern struct scsi_host_template aic7xxx_driver_template; 135 136/***************************** Bus Space/DMA **********************************/ 137 138typedef uint32_t bus_size_t; 139 140typedef enum { 141 BUS_SPACE_MEMIO, 142 BUS_SPACE_PIO 143} bus_space_tag_t; 144 145typedef union { 146 u_long ioport; 147 volatile uint8_t __iomem *maddr; 148} bus_space_handle_t; 149 150typedef struct bus_dma_segment 151{ 152 dma_addr_t ds_addr; 153 bus_size_t ds_len; 154} bus_dma_segment_t; 155 156struct ahc_linux_dma_tag 157{ 158 bus_size_t alignment; 159 bus_size_t boundary; 160 bus_size_t maxsize; 161}; 162typedef struct ahc_linux_dma_tag* bus_dma_tag_t; 163 164typedef dma_addr_t bus_dmamap_t; 165 166typedef int bus_dma_filter_t(void*, dma_addr_t); 167typedef void bus_dmamap_callback_t(void *, bus_dma_segment_t *, int, int); 168 169#define BUS_DMA_WAITOK 0x0 170#define BUS_DMA_NOWAIT 0x1 171#define BUS_DMA_ALLOCNOW 0x2 172#define BUS_DMA_LOAD_SEGS 0x4 /* 173 * Argument is an S/G list not 174 * a single buffer. 175 */ 176 177#define BUS_SPACE_MAXADDR 0xFFFFFFFF 178#define BUS_SPACE_MAXADDR_32BIT 0xFFFFFFFF 179#define BUS_SPACE_MAXSIZE_32BIT 0xFFFFFFFF 180 181int ahc_dma_tag_create(struct ahc_softc *, bus_dma_tag_t /*parent*/, 182 bus_size_t /*alignment*/, bus_size_t /*boundary*/, 183 dma_addr_t /*lowaddr*/, dma_addr_t /*highaddr*/, 184 bus_dma_filter_t*/*filter*/, void */*filterarg*/, 185 bus_size_t /*maxsize*/, int /*nsegments*/, 186 bus_size_t /*maxsegsz*/, int /*flags*/, 187 bus_dma_tag_t */*dma_tagp*/); 188 189void ahc_dma_tag_destroy(struct ahc_softc *, bus_dma_tag_t /*tag*/); 190 191int ahc_dmamem_alloc(struct ahc_softc *, bus_dma_tag_t /*dmat*/, 192 void** /*vaddr*/, int /*flags*/, 193 bus_dmamap_t* /*mapp*/); 194 195void ahc_dmamem_free(struct ahc_softc *, bus_dma_tag_t /*dmat*/, 196 void* /*vaddr*/, bus_dmamap_t /*map*/); 197 198void ahc_dmamap_destroy(struct ahc_softc *, bus_dma_tag_t /*tag*/, 199 bus_dmamap_t /*map*/); 200 201int ahc_dmamap_load(struct ahc_softc *ahc, bus_dma_tag_t /*dmat*/, 202 bus_dmamap_t /*map*/, void * /*buf*/, 203 bus_size_t /*buflen*/, bus_dmamap_callback_t *, 204 void */*callback_arg*/, int /*flags*/); 205 206int ahc_dmamap_unload(struct ahc_softc *, bus_dma_tag_t, bus_dmamap_t); 207 208/* 209 * Operations performed by ahc_dmamap_sync(). 210 */ 211#define BUS_DMASYNC_PREREAD 0x01 /* pre-read synchronization */ 212#define BUS_DMASYNC_POSTREAD 0x02 /* post-read synchronization */ 213#define BUS_DMASYNC_PREWRITE 0x04 /* pre-write synchronization */ 214#define BUS_DMASYNC_POSTWRITE 0x08 /* post-write synchronization */ 215 216/* 217 * XXX 218 * ahc_dmamap_sync is only used on buffers allocated with 219 * the pci_alloc_consistent() API. Although I'm not sure how 220 * this works on architectures with a write buffer, Linux does 221 * not have an API to sync "coherent" memory. Perhaps we need 222 * to do an mb()? 223 */ 224#define ahc_dmamap_sync(ahc, dma_tag, dmamap, offset, len, op) 225 226/********************************** Includes **********************************/ 227#ifdef CONFIG_AIC7XXX_REG_PRETTY_PRINT 228#define AIC_DEBUG_REGISTERS 1 229#else 230#define AIC_DEBUG_REGISTERS 0 231#endif 232#include "aic7xxx.h" 233 234/***************************** Timer Facilities *******************************/ 235static __inline void 236ahc_scb_timer_reset(struct scb *scb, u_int usec) 237{ 238} 239 240/***************************** SMP support ************************************/ 241#include <linux/spinlock.h> 242 243#define AIC7XXX_DRIVER_VERSION "7.0" 244 245/*************************** Device Data Structures ***************************/ 246/* 247 * A per probed device structure used to deal with some error recovery 248 * scenarios that the Linux mid-layer code just doesn't know how to 249 * handle. The structure allocated for a device only becomes persistent 250 * after a successfully completed inquiry command to the target when 251 * that inquiry data indicates a lun is present. 252 */ 253typedef enum { 254 AHC_DEV_FREEZE_TIL_EMPTY = 0x02, /* Freeze queue until active == 0 */ 255 AHC_DEV_Q_BASIC = 0x10, /* Allow basic device queuing */ 256 AHC_DEV_Q_TAGGED = 0x20, /* Allow full SCSI2 command queueing */ 257 AHC_DEV_PERIODIC_OTAG = 0x40, /* Send OTAG to prevent starvation */ 258} ahc_linux_dev_flags; 259 260struct ahc_linux_target; 261struct ahc_linux_device { 262 /* 263 * The number of transactions currently 264 * queued to the device. 265 */ 266 int active; 267 268 /* 269 * The currently allowed number of 270 * transactions that can be queued to 271 * the device. Must be signed for 272 * conversion from tagged to untagged 273 * mode where the device may have more 274 * than one outstanding active transaction. 275 */ 276 int openings; 277 278 /* 279 * A positive count indicates that this 280 * device's queue is halted. 281 */ 282 u_int qfrozen; 283 284 /* 285 * Cumulative command counter. 286 */ 287 u_long commands_issued; 288 289 /* 290 * The number of tagged transactions when 291 * running at our current opening level 292 * that have been successfully received by 293 * this device since the last QUEUE FULL. 294 */ 295 u_int tag_success_count; 296#define AHC_TAG_SUCCESS_INTERVAL 50 297 298 ahc_linux_dev_flags flags; 299 300 /* 301 * The high limit for the tags variable. 302 */ 303 u_int maxtags; 304 305 /* 306 * The computed number of tags outstanding 307 * at the time of the last QUEUE FULL event. 308 */ 309 u_int tags_on_last_queuefull; 310 311 /* 312 * How many times we have seen a queue full 313 * with the same number of tags. This is used 314 * to stop our adaptive queue depth algorithm 315 * on devices with a fixed number of tags. 316 */ 317 u_int last_queuefull_same_count; 318#define AHC_LOCK_TAGS_COUNT 50 319 320 /* 321 * How many transactions have been queued 322 * without the device going idle. We use 323 * this statistic to determine when to issue 324 * an ordered tag to prevent transaction 325 * starvation. This statistic is only updated 326 * if the AHC_DEV_PERIODIC_OTAG flag is set 327 * on this device. 328 */ 329 u_int commands_since_idle_or_otag; 330#define AHC_OTAG_THRESH 500 331}; 332 333struct ahc_linux_target { 334 struct scsi_device *sdev[AHC_NUM_LUNS]; 335 struct ahc_transinfo last_tinfo; 336 struct ahc_softc *ahc; 337}; 338 339/********************* Definitions Required by the Core ***********************/ 340/* 341 * Number of SG segments we require. So long as the S/G segments for 342 * a particular transaction are allocated in a physically contiguous 343 * manner and are allocated below 4GB, the number of S/G segments is 344 * unrestricted. 345 */ 346#define AHC_NSEG 128 347 348/* 349 * Per-SCB OSM storage. 350 */ 351struct scb_platform_data { 352 struct ahc_linux_device *dev; 353 dma_addr_t buf_busaddr; 354 uint32_t xfer_len; 355 uint32_t sense_resid; /* Auto-Sense residual */ 356}; 357 358/* 359 * Define a structure used for each host adapter. All members are 360 * aligned on a boundary >= the size of the member to honor the 361 * alignment restrictions of the various platforms supported by 362 * this driver. 363 */ 364struct ahc_platform_data { 365 /* 366 * Fields accessed from interrupt context. 367 */ 368 struct scsi_target *starget[AHC_NUM_TARGETS]; 369 370 spinlock_t spin_lock; 371 u_int qfrozen; 372 struct semaphore eh_sem; 373 struct Scsi_Host *host; /* pointer to scsi host */ 374#define AHC_LINUX_NOIRQ ((uint32_t)~0) 375 uint32_t irq; /* IRQ for this adapter */ 376 uint32_t bios_address; 377 uint32_t mem_busaddr; /* Mem Base Addr */ 378 379#define AHC_UP_EH_SEMAPHORE 0x1 380 uint32_t flags; 381}; 382 383/************************** OS Utility Wrappers *******************************/ 384#define printf printk 385#define M_NOWAIT GFP_ATOMIC 386#define M_WAITOK 0 387#define malloc(size, type, flags) kmalloc(size, flags) 388#define free(ptr, type) kfree(ptr) 389 390static __inline void ahc_delay(long); 391static __inline void 392ahc_delay(long usec) 393{ 394 /* 395 * udelay on Linux can have problems for 396 * multi-millisecond waits. Wait at most 397 * 1024us per call. 398 */ 399 while (usec > 0) { 400 udelay(usec % 1024); 401 usec -= 1024; 402 } 403} 404 405 406/***************************** Low Level I/O **********************************/ 407static __inline uint8_t ahc_inb(struct ahc_softc * ahc, long port); 408static __inline void ahc_outb(struct ahc_softc * ahc, long port, uint8_t val); 409static __inline void ahc_outsb(struct ahc_softc * ahc, long port, 410 uint8_t *, int count); 411static __inline void ahc_insb(struct ahc_softc * ahc, long port, 412 uint8_t *, int count); 413 414static __inline uint8_t 415ahc_inb(struct ahc_softc * ahc, long port) 416{ 417 uint8_t x; 418 419 if (ahc->tag == BUS_SPACE_MEMIO) { 420 x = readb(ahc->bsh.maddr + port); 421 } else { 422 x = inb(ahc->bsh.ioport + port); 423 } 424 mb(); 425 return (x); 426} 427 428static __inline void 429ahc_outb(struct ahc_softc * ahc, long port, uint8_t val) 430{ 431 if (ahc->tag == BUS_SPACE_MEMIO) { 432 writeb(val, ahc->bsh.maddr + port); 433 } else { 434 outb(val, ahc->bsh.ioport + port); 435 } 436 mb(); 437} 438 439static __inline void 440ahc_outsb(struct ahc_softc * ahc, long port, uint8_t *array, int count) 441{ 442 int i; 443 444 /* 445 * There is probably a more efficient way to do this on Linux 446 * but we don't use this for anything speed critical and this 447 * should work. 448 */ 449 for (i = 0; i < count; i++) 450 ahc_outb(ahc, port, *array++); 451} 452 453static __inline void 454ahc_insb(struct ahc_softc * ahc, long port, uint8_t *array, int count) 455{ 456 int i; 457 458 /* 459 * There is probably a more efficient way to do this on Linux 460 * but we don't use this for anything speed critical and this 461 * should work. 462 */ 463 for (i = 0; i < count; i++) 464 *array++ = ahc_inb(ahc, port); 465} 466 467/**************************** Initialization **********************************/ 468int ahc_linux_register_host(struct ahc_softc *, 469 struct scsi_host_template *); 470 471/*************************** Pretty Printing **********************************/ 472struct info_str { 473 char *buffer; 474 int length; 475 off_t offset; 476 int pos; 477}; 478 479void ahc_format_transinfo(struct info_str *info, 480 struct ahc_transinfo *tinfo); 481 482/******************************** Locking *************************************/ 483/* Lock protecting internal data structures */ 484 485static __inline void 486ahc_lockinit(struct ahc_softc *ahc) 487{ 488 spin_lock_init(&ahc->platform_data->spin_lock); 489} 490 491static __inline void 492ahc_lock(struct ahc_softc *ahc, unsigned long *flags) 493{ 494 spin_lock_irqsave(&ahc->platform_data->spin_lock, *flags); 495} 496 497static __inline void 498ahc_unlock(struct ahc_softc *ahc, unsigned long *flags) 499{ 500 spin_unlock_irqrestore(&ahc->platform_data->spin_lock, *flags); 501} 502 503/******************************* PCI Definitions ******************************/ 504/* 505 * PCIM_xxx: mask to locate subfield in register 506 * PCIR_xxx: config register offset 507 * PCIC_xxx: device class 508 * PCIS_xxx: device subclass 509 * PCIP_xxx: device programming interface 510 * PCIV_xxx: PCI vendor ID (only required to fixup ancient devices) 511 * PCID_xxx: device ID 512 */ 513#define PCIR_DEVVENDOR 0x00 514#define PCIR_VENDOR 0x00 515#define PCIR_DEVICE 0x02 516#define PCIR_COMMAND 0x04 517#define PCIM_CMD_PORTEN 0x0001 518#define PCIM_CMD_MEMEN 0x0002 519#define PCIM_CMD_BUSMASTEREN 0x0004 520#define PCIM_CMD_MWRICEN 0x0010 521#define PCIM_CMD_PERRESPEN 0x0040 522#define PCIM_CMD_SERRESPEN 0x0100 523#define PCIR_STATUS 0x06 524#define PCIR_REVID 0x08 525#define PCIR_PROGIF 0x09 526#define PCIR_SUBCLASS 0x0a 527#define PCIR_CLASS 0x0b 528#define PCIR_CACHELNSZ 0x0c 529#define PCIR_LATTIMER 0x0d 530#define PCIR_HEADERTYPE 0x0e 531#define PCIM_MFDEV 0x80 532#define PCIR_BIST 0x0f 533#define PCIR_CAP_PTR 0x34 534 535/* config registers for header type 0 devices */ 536#define PCIR_MAPS 0x10 537#define PCIR_SUBVEND_0 0x2c 538#define PCIR_SUBDEV_0 0x2e 539 540extern struct pci_driver aic7xxx_pci_driver; 541 542typedef enum 543{ 544 AHC_POWER_STATE_D0, 545 AHC_POWER_STATE_D1, 546 AHC_POWER_STATE_D2, 547 AHC_POWER_STATE_D3 548} ahc_power_state; 549 550/**************************** VL/EISA Routines ********************************/ 551#ifdef CONFIG_EISA 552int ahc_linux_eisa_init(void); 553void ahc_linux_eisa_exit(void); 554int aic7770_map_registers(struct ahc_softc *ahc, 555 u_int port); 556int aic7770_map_int(struct ahc_softc *ahc, u_int irq); 557#else 558static inline int ahc_linux_eisa_init(void) { 559 return -ENODEV; 560} 561static inline void ahc_linux_eisa_exit(void) { 562} 563#endif 564 565/******************************* PCI Routines *********************************/ 566#ifdef CONFIG_PCI 567int ahc_linux_pci_init(void); 568void ahc_linux_pci_exit(void); 569int ahc_pci_map_registers(struct ahc_softc *ahc); 570int ahc_pci_map_int(struct ahc_softc *ahc); 571 572static __inline uint32_t ahc_pci_read_config(ahc_dev_softc_t pci, 573 int reg, int width); 574 575static __inline uint32_t 576ahc_pci_read_config(ahc_dev_softc_t pci, int reg, int width) 577{ 578 switch (width) { 579 case 1: 580 { 581 uint8_t retval; 582 583 pci_read_config_byte(pci, reg, &retval); 584 return (retval); 585 } 586 case 2: 587 { 588 uint16_t retval; 589 pci_read_config_word(pci, reg, &retval); 590 return (retval); 591 } 592 case 4: 593 { 594 uint32_t retval; 595 pci_read_config_dword(pci, reg, &retval); 596 return (retval); 597 } 598 default: 599 panic("ahc_pci_read_config: Read size too big"); 600 /* NOTREACHED */ 601 return (0); 602 } 603} 604 605static __inline void ahc_pci_write_config(ahc_dev_softc_t pci, 606 int reg, uint32_t value, 607 int width); 608 609static __inline void 610ahc_pci_write_config(ahc_dev_softc_t pci, int reg, uint32_t value, int width) 611{ 612 switch (width) { 613 case 1: 614 pci_write_config_byte(pci, reg, value); 615 break; 616 case 2: 617 pci_write_config_word(pci, reg, value); 618 break; 619 case 4: 620 pci_write_config_dword(pci, reg, value); 621 break; 622 default: 623 panic("ahc_pci_write_config: Write size too big"); 624 /* NOTREACHED */ 625 } 626} 627 628static __inline int ahc_get_pci_function(ahc_dev_softc_t); 629static __inline int 630ahc_get_pci_function(ahc_dev_softc_t pci) 631{ 632 return (PCI_FUNC(pci->devfn)); 633} 634 635static __inline int ahc_get_pci_slot(ahc_dev_softc_t); 636static __inline int 637ahc_get_pci_slot(ahc_dev_softc_t pci) 638{ 639 return (PCI_SLOT(pci->devfn)); 640} 641 642static __inline int ahc_get_pci_bus(ahc_dev_softc_t); 643static __inline int 644ahc_get_pci_bus(ahc_dev_softc_t pci) 645{ 646 return (pci->bus->number); 647} 648#else 649static inline int ahc_linux_pci_init(void) { 650 return 0; 651} 652static inline void ahc_linux_pci_exit(void) { 653} 654#endif 655 656static __inline void ahc_flush_device_writes(struct ahc_softc *); 657static __inline void 658ahc_flush_device_writes(struct ahc_softc *ahc) 659{ 660 /* XXX Is this sufficient for all architectures??? */ 661 ahc_inb(ahc, INTSTAT); 662} 663 664/**************************** Proc FS Support *********************************/ 665int ahc_linux_proc_info(struct Scsi_Host *, char *, char **, 666 off_t, int, int); 667 668/*************************** Domain Validation ********************************/ 669/*********************** Transaction Access Wrappers *************************/ 670static __inline void ahc_cmd_set_transaction_status(struct scsi_cmnd *, uint32_t); 671static __inline void ahc_set_transaction_status(struct scb *, uint32_t); 672static __inline void ahc_cmd_set_scsi_status(struct scsi_cmnd *, uint32_t); 673static __inline void ahc_set_scsi_status(struct scb *, uint32_t); 674static __inline uint32_t ahc_cmd_get_transaction_status(struct scsi_cmnd *cmd); 675static __inline uint32_t ahc_get_transaction_status(struct scb *); 676static __inline uint32_t ahc_cmd_get_scsi_status(struct scsi_cmnd *cmd); 677static __inline uint32_t ahc_get_scsi_status(struct scb *); 678static __inline void ahc_set_transaction_tag(struct scb *, int, u_int); 679static __inline u_long ahc_get_transfer_length(struct scb *); 680static __inline int ahc_get_transfer_dir(struct scb *); 681static __inline void ahc_set_residual(struct scb *, u_long); 682static __inline void ahc_set_sense_residual(struct scb *scb, u_long resid); 683static __inline u_long ahc_get_residual(struct scb *); 684static __inline u_long ahc_get_sense_residual(struct scb *); 685static __inline int ahc_perform_autosense(struct scb *); 686static __inline uint32_t ahc_get_sense_bufsize(struct ahc_softc *, 687 struct scb *); 688static __inline void ahc_notify_xfer_settings_change(struct ahc_softc *, 689 struct ahc_devinfo *); 690static __inline void ahc_platform_scb_free(struct ahc_softc *ahc, 691 struct scb *scb); 692static __inline void ahc_freeze_scb(struct scb *scb); 693 694static __inline 695void ahc_cmd_set_transaction_status(struct scsi_cmnd *cmd, uint32_t status) 696{ 697 cmd->result &= ~(CAM_STATUS_MASK << 16); 698 cmd->result |= status << 16; 699} 700 701static __inline 702void ahc_set_transaction_status(struct scb *scb, uint32_t status) 703{ 704 ahc_cmd_set_transaction_status(scb->io_ctx,status); 705} 706 707static __inline 708void ahc_cmd_set_scsi_status(struct scsi_cmnd *cmd, uint32_t status) 709{ 710 cmd->result &= ~0xFFFF; 711 cmd->result |= status; 712} 713 714static __inline 715void ahc_set_scsi_status(struct scb *scb, uint32_t status) 716{ 717 ahc_cmd_set_scsi_status(scb->io_ctx, status); 718} 719 720static __inline 721uint32_t ahc_cmd_get_transaction_status(struct scsi_cmnd *cmd) 722{ 723 return ((cmd->result >> 16) & CAM_STATUS_MASK); 724} 725 726static __inline 727uint32_t ahc_get_transaction_status(struct scb *scb) 728{ 729 return (ahc_cmd_get_transaction_status(scb->io_ctx)); 730} 731 732static __inline 733uint32_t ahc_cmd_get_scsi_status(struct scsi_cmnd *cmd) 734{ 735 return (cmd->result & 0xFFFF); 736} 737 738static __inline 739uint32_t ahc_get_scsi_status(struct scb *scb) 740{ 741 return (ahc_cmd_get_scsi_status(scb->io_ctx)); 742} 743 744static __inline 745void ahc_set_transaction_tag(struct scb *scb, int enabled, u_int type) 746{ 747 /* 748 * Nothing to do for linux as the incoming transaction 749 * has no concept of tag/non tagged, etc. 750 */ 751} 752 753static __inline 754u_long ahc_get_transfer_length(struct scb *scb) 755{ 756 return (scb->platform_data->xfer_len); 757} 758 759static __inline 760int ahc_get_transfer_dir(struct scb *scb) 761{ 762 return (scb->io_ctx->sc_data_direction); 763} 764 765static __inline 766void ahc_set_residual(struct scb *scb, u_long resid) 767{ 768 scb->io_ctx->resid = resid; 769} 770 771static __inline 772void ahc_set_sense_residual(struct scb *scb, u_long resid) 773{ 774 scb->platform_data->sense_resid = resid; 775} 776 777static __inline 778u_long ahc_get_residual(struct scb *scb) 779{ 780 return (scb->io_ctx->resid); 781} 782 783static __inline 784u_long ahc_get_sense_residual(struct scb *scb) 785{ 786 return (scb->platform_data->sense_resid); 787} 788 789static __inline 790int ahc_perform_autosense(struct scb *scb) 791{ 792 /* 793 * We always perform autosense in Linux. 794 * On other platforms this is set on a 795 * per-transaction basis. 796 */ 797 return (1); 798} 799 800static __inline uint32_t 801ahc_get_sense_bufsize(struct ahc_softc *ahc, struct scb *scb) 802{ 803 return (sizeof(struct scsi_sense_data)); 804} 805 806static __inline void 807ahc_notify_xfer_settings_change(struct ahc_softc *ahc, 808 struct ahc_devinfo *devinfo) 809{ 810 /* Nothing to do here for linux */ 811} 812 813static __inline void 814ahc_platform_scb_free(struct ahc_softc *ahc, struct scb *scb) 815{ 816} 817 818int ahc_platform_alloc(struct ahc_softc *ahc, void *platform_arg); 819void ahc_platform_free(struct ahc_softc *ahc); 820void ahc_platform_freeze_devq(struct ahc_softc *ahc, struct scb *scb); 821 822static __inline void 823ahc_freeze_scb(struct scb *scb) 824{ 825 if ((scb->io_ctx->result & (CAM_DEV_QFRZN << 16)) == 0) { 826 scb->io_ctx->result |= CAM_DEV_QFRZN << 16; 827 scb->platform_data->dev->qfrozen++; 828 } 829} 830 831void ahc_platform_set_tags(struct ahc_softc *ahc, 832 struct ahc_devinfo *devinfo, ahc_queue_alg); 833int ahc_platform_abort_scbs(struct ahc_softc *ahc, int target, 834 char channel, int lun, u_int tag, 835 role_t role, uint32_t status); 836irqreturn_t 837 ahc_linux_isr(int irq, void *dev_id, struct pt_regs * regs); 838void ahc_platform_flushwork(struct ahc_softc *ahc); 839void ahc_done(struct ahc_softc*, struct scb*); 840void ahc_send_async(struct ahc_softc *, char channel, 841 u_int target, u_int lun, ac_code, void *); 842void ahc_print_path(struct ahc_softc *, struct scb *); 843void ahc_platform_dump_card_state(struct ahc_softc *ahc); 844 845#ifdef CONFIG_PCI 846#define AHC_PCI_CONFIG 1 847#else 848#define AHC_PCI_CONFIG 0 849#endif 850#define bootverbose aic7xxx_verbose 851extern u_int aic7xxx_verbose; 852#endif /* _AIC7XXX_LINUX_H_ */ 853