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: aic79xx_osm.h,v 1.1.1.1 2007/08/03 18:52:57 Exp $ 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 217typedef void ahd_linux_callback_t (u_long); 218static __inline void ahd_timer_reset(ahd_timer_t *timer, int usec, 219 ahd_callback_t *func, void *arg); 220 221static __inline void 222ahd_timer_reset(ahd_timer_t *timer, int usec, ahd_callback_t *func, void *arg) 223{ 224 struct ahd_softc *ahd; 225 226 ahd = (struct ahd_softc *)arg; 227 del_timer(timer); 228 timer->data = (u_long)arg; 229 timer->expires = jiffies + (usec * HZ)/1000000; 230 timer->function = (ahd_linux_callback_t*)func; 231 add_timer(timer); 232} 233 234/***************************** SMP support ************************************/ 235#include <linux/spinlock.h> 236 237#define AIC79XX_DRIVER_VERSION "3.0" 238 239/*************************** Device Data Structures ***************************/ 240/* 241 * A per probed device structure used to deal with some error recovery 242 * scenarios that the Linux mid-layer code just doesn't know how to 243 * handle. The structure allocated for a device only becomes persistent 244 * after a successfully completed inquiry command to the target when 245 * that inquiry data indicates a lun is present. 246 */ 247 248typedef enum { 249 AHD_DEV_FREEZE_TIL_EMPTY = 0x02, /* Freeze queue until active == 0 */ 250 AHD_DEV_Q_BASIC = 0x10, /* Allow basic device queuing */ 251 AHD_DEV_Q_TAGGED = 0x20, /* Allow full SCSI2 command queueing */ 252 AHD_DEV_PERIODIC_OTAG = 0x40, /* Send OTAG to prevent starvation */ 253} ahd_linux_dev_flags; 254 255struct ahd_linux_device { 256 TAILQ_ENTRY(ahd_linux_device) links; 257 258 /* 259 * The number of transactions currently 260 * queued to the device. 261 */ 262 int active; 263 264 /* 265 * The currently allowed number of 266 * transactions that can be queued to 267 * the device. Must be signed for 268 * conversion from tagged to untagged 269 * mode where the device may have more 270 * than one outstanding active transaction. 271 */ 272 int openings; 273 274 /* 275 * A positive count indicates that this 276 * device's queue is halted. 277 */ 278 u_int qfrozen; 279 280 /* 281 * Cumulative command counter. 282 */ 283 u_long commands_issued; 284 285 /* 286 * The number of tagged transactions when 287 * running at our current opening level 288 * that have been successfully received by 289 * this device since the last QUEUE FULL. 290 */ 291 u_int tag_success_count; 292#define AHD_TAG_SUCCESS_INTERVAL 50 293 294 ahd_linux_dev_flags flags; 295 296 /* 297 * Per device timer. 298 */ 299 struct timer_list timer; 300 301 /* 302 * The high limit for the tags variable. 303 */ 304 u_int maxtags; 305 306 /* 307 * The computed number of tags outstanding 308 * at the time of the last QUEUE FULL event. 309 */ 310 u_int tags_on_last_queuefull; 311 312 /* 313 * How many times we have seen a queue full 314 * with the same number of tags. This is used 315 * to stop our adaptive queue depth algorithm 316 * on devices with a fixed number of tags. 317 */ 318 u_int last_queuefull_same_count; 319#define AHD_LOCK_TAGS_COUNT 50 320 321 /* 322 * How many transactions have been queued 323 * without the device going idle. We use 324 * this statistic to determine when to issue 325 * an ordered tag to prevent transaction 326 * starvation. This statistic is only updated 327 * if the AHD_DEV_PERIODIC_OTAG flag is set 328 * on this device. 329 */ 330 u_int commands_since_idle_or_otag; 331#define AHD_OTAG_THRESH 500 332}; 333 334/********************* Definitions Required by the Core ***********************/ 335/* 336 * Number of SG segments we require. So long as the S/G segments for 337 * a particular transaction are allocated in a physically contiguous 338 * manner and are allocated below 4GB, the number of S/G segments is 339 * unrestricted. 340 */ 341#define AHD_NSEG 128 342 343/* 344 * Per-SCB OSM storage. 345 */ 346struct scb_platform_data { 347 struct ahd_linux_device *dev; 348 dma_addr_t buf_busaddr; 349 uint32_t xfer_len; 350 uint32_t sense_resid; /* Auto-Sense residual */ 351}; 352 353/* 354 * Define a structure used for each host adapter. All members are 355 * aligned on a boundary >= the size of the member to honor the 356 * alignment restrictions of the various platforms supported by 357 * this driver. 358 */ 359struct ahd_platform_data { 360 /* 361 * Fields accessed from interrupt context. 362 */ 363 struct scsi_target *starget[AHD_NUM_TARGETS]; 364 365 spinlock_t spin_lock; 366 struct completion *eh_done; 367 struct Scsi_Host *host; /* pointer to scsi host */ 368#define AHD_LINUX_NOIRQ ((uint32_t)~0) 369 uint32_t irq; /* IRQ for this adapter */ 370 uint32_t bios_address; 371 uint32_t mem_busaddr; /* Mem Base Addr */ 372}; 373 374/************************** OS Utility Wrappers *******************************/ 375#define printf printk 376#define M_NOWAIT GFP_ATOMIC 377#define M_WAITOK 0 378#define malloc(size, type, flags) kmalloc(size, flags) 379#define free(ptr, type) kfree(ptr) 380 381static __inline void ahd_delay(long); 382static __inline void 383ahd_delay(long usec) 384{ 385 /* 386 * udelay on Linux can have problems for 387 * multi-millisecond waits. Wait at most 388 * 1024us per call. 389 */ 390 while (usec > 0) { 391 udelay(usec % 1024); 392 usec -= 1024; 393 } 394} 395 396 397/***************************** Low Level I/O **********************************/ 398static __inline uint8_t ahd_inb(struct ahd_softc * ahd, long port); 399static __inline uint16_t ahd_inw_atomic(struct ahd_softc * ahd, long port); 400static __inline void ahd_outb(struct ahd_softc * ahd, long port, uint8_t val); 401static __inline void ahd_outw_atomic(struct ahd_softc * ahd, 402 long port, uint16_t val); 403static __inline void ahd_outsb(struct ahd_softc * ahd, long port, 404 uint8_t *, int count); 405static __inline void ahd_insb(struct ahd_softc * ahd, long port, 406 uint8_t *, int count); 407 408static __inline uint8_t 409ahd_inb(struct ahd_softc * ahd, long port) 410{ 411 uint8_t x; 412 413 if (ahd->tags[0] == BUS_SPACE_MEMIO) { 414 x = readb(ahd->bshs[0].maddr + port); 415 } else { 416 x = inb(ahd->bshs[(port) >> 8].ioport + ((port) & 0xFF)); 417 } 418 mb(); 419 return (x); 420} 421 422static __inline uint16_t 423ahd_inw_atomic(struct ahd_softc * ahd, long port) 424{ 425 uint8_t x; 426 427 if (ahd->tags[0] == BUS_SPACE_MEMIO) { 428 x = readw(ahd->bshs[0].maddr + port); 429 } else { 430 x = inw(ahd->bshs[(port) >> 8].ioport + ((port) & 0xFF)); 431 } 432 mb(); 433 return (x); 434} 435 436static __inline void 437ahd_outb(struct ahd_softc * ahd, long port, uint8_t val) 438{ 439 if (ahd->tags[0] == BUS_SPACE_MEMIO) { 440 writeb(val, ahd->bshs[0].maddr + port); 441 } else { 442 outb(val, ahd->bshs[(port) >> 8].ioport + (port & 0xFF)); 443 } 444 mb(); 445} 446 447static __inline void 448ahd_outw_atomic(struct ahd_softc * ahd, long port, uint16_t val) 449{ 450 if (ahd->tags[0] == BUS_SPACE_MEMIO) { 451 writew(val, ahd->bshs[0].maddr + port); 452 } else { 453 outw(val, ahd->bshs[(port) >> 8].ioport + (port & 0xFF)); 454 } 455 mb(); 456} 457 458static __inline void 459ahd_outsb(struct ahd_softc * ahd, long port, uint8_t *array, int count) 460{ 461 int i; 462 463 /* 464 * There is probably a more efficient way to do this on Linux 465 * but we don't use this for anything speed critical and this 466 * should work. 467 */ 468 for (i = 0; i < count; i++) 469 ahd_outb(ahd, port, *array++); 470} 471 472static __inline void 473ahd_insb(struct ahd_softc * ahd, long port, uint8_t *array, int count) 474{ 475 int i; 476 477 /* 478 * There is probably a more efficient way to do this on Linux 479 * but we don't use this for anything speed critical and this 480 * should work. 481 */ 482 for (i = 0; i < count; i++) 483 *array++ = ahd_inb(ahd, port); 484} 485 486/**************************** Initialization **********************************/ 487int ahd_linux_register_host(struct ahd_softc *, 488 struct scsi_host_template *); 489 490/*************************** Pretty Printing **********************************/ 491struct info_str { 492 char *buffer; 493 int length; 494 off_t offset; 495 int pos; 496}; 497 498/******************************** Locking *************************************/ 499static __inline void 500ahd_lockinit(struct ahd_softc *ahd) 501{ 502 spin_lock_init(&ahd->platform_data->spin_lock); 503} 504 505static __inline void 506ahd_lock(struct ahd_softc *ahd, unsigned long *flags) 507{ 508 spin_lock_irqsave(&ahd->platform_data->spin_lock, *flags); 509} 510 511static __inline void 512ahd_unlock(struct ahd_softc *ahd, unsigned long *flags) 513{ 514 spin_unlock_irqrestore(&ahd->platform_data->spin_lock, *flags); 515} 516 517/******************************* PCI Definitions ******************************/ 518/* 519 * PCIM_xxx: mask to locate subfield in register 520 * PCIR_xxx: config register offset 521 * PCIC_xxx: device class 522 * PCIS_xxx: device subclass 523 * PCIP_xxx: device programming interface 524 * PCIV_xxx: PCI vendor ID (only required to fixup ancient devices) 525 * PCID_xxx: device ID 526 */ 527#define PCIR_DEVVENDOR 0x00 528#define PCIR_VENDOR 0x00 529#define PCIR_DEVICE 0x02 530#define PCIR_COMMAND 0x04 531#define PCIM_CMD_PORTEN 0x0001 532#define PCIM_CMD_MEMEN 0x0002 533#define PCIM_CMD_BUSMASTEREN 0x0004 534#define PCIM_CMD_MWRICEN 0x0010 535#define PCIM_CMD_PERRESPEN 0x0040 536#define PCIM_CMD_SERRESPEN 0x0100 537#define PCIR_STATUS 0x06 538#define PCIR_REVID 0x08 539#define PCIR_PROGIF 0x09 540#define PCIR_SUBCLASS 0x0a 541#define PCIR_CLASS 0x0b 542#define PCIR_CACHELNSZ 0x0c 543#define PCIR_LATTIMER 0x0d 544#define PCIR_HEADERTYPE 0x0e 545#define PCIM_MFDEV 0x80 546#define PCIR_BIST 0x0f 547#define PCIR_CAP_PTR 0x34 548 549/* config registers for header type 0 devices */ 550#define PCIR_MAPS 0x10 551#define PCIR_SUBVEND_0 0x2c 552#define PCIR_SUBDEV_0 0x2e 553 554/****************************** PCI-X definitions *****************************/ 555#define PCIXR_COMMAND 0x96 556#define PCIXR_DEVADDR 0x98 557#define PCIXM_DEVADDR_FNUM 0x0003 /* Function Number */ 558#define PCIXM_DEVADDR_DNUM 0x00F8 /* Device Number */ 559#define PCIXM_DEVADDR_BNUM 0xFF00 /* Bus Number */ 560#define PCIXR_STATUS 0x9A 561#define PCIXM_STATUS_64BIT 0x0001 /* Active 64bit connection to device. */ 562#define PCIXM_STATUS_133CAP 0x0002 /* Device is 133MHz capable */ 563#define PCIXM_STATUS_SCDISC 0x0004 /* Split Completion Discarded */ 564#define PCIXM_STATUS_UNEXPSC 0x0008 /* Unexpected Split Completion */ 565#define PCIXM_STATUS_CMPLEXDEV 0x0010 /* Device Complexity (set == bridge) */ 566#define PCIXM_STATUS_MAXMRDBC 0x0060 /* Maximum Burst Read Count */ 567#define PCIXM_STATUS_MAXSPLITS 0x0380 /* Maximum Split Transactions */ 568#define PCIXM_STATUS_MAXCRDS 0x1C00 /* Maximum Cumulative Read Size */ 569#define PCIXM_STATUS_RCVDSCEM 0x2000 /* Received a Split Comp w/Error msg */ 570 571typedef enum 572{ 573 AHD_POWER_STATE_D0, 574 AHD_POWER_STATE_D1, 575 AHD_POWER_STATE_D2, 576 AHD_POWER_STATE_D3 577} ahd_power_state; 578 579void ahd_power_state_change(struct ahd_softc *ahd, 580 ahd_power_state new_state); 581 582/******************************* PCI Routines *********************************/ 583int ahd_linux_pci_init(void); 584void ahd_linux_pci_exit(void); 585int ahd_pci_map_registers(struct ahd_softc *ahd); 586int ahd_pci_map_int(struct ahd_softc *ahd); 587 588static __inline uint32_t ahd_pci_read_config(ahd_dev_softc_t pci, 589 int reg, int width); 590 591static __inline uint32_t 592ahd_pci_read_config(ahd_dev_softc_t pci, int reg, int width) 593{ 594 switch (width) { 595 case 1: 596 { 597 uint8_t retval; 598 599 pci_read_config_byte(pci, reg, &retval); 600 return (retval); 601 } 602 case 2: 603 { 604 uint16_t retval; 605 pci_read_config_word(pci, reg, &retval); 606 return (retval); 607 } 608 case 4: 609 { 610 uint32_t retval; 611 pci_read_config_dword(pci, reg, &retval); 612 return (retval); 613 } 614 default: 615 panic("ahd_pci_read_config: Read size too big"); 616 /* NOTREACHED */ 617 return (0); 618 } 619} 620 621static __inline void ahd_pci_write_config(ahd_dev_softc_t pci, 622 int reg, uint32_t value, 623 int width); 624 625static __inline void 626ahd_pci_write_config(ahd_dev_softc_t pci, int reg, uint32_t value, int width) 627{ 628 switch (width) { 629 case 1: 630 pci_write_config_byte(pci, reg, value); 631 break; 632 case 2: 633 pci_write_config_word(pci, reg, value); 634 break; 635 case 4: 636 pci_write_config_dword(pci, reg, value); 637 break; 638 default: 639 panic("ahd_pci_write_config: Write size too big"); 640 /* NOTREACHED */ 641 } 642} 643 644static __inline int ahd_get_pci_function(ahd_dev_softc_t); 645static __inline int 646ahd_get_pci_function(ahd_dev_softc_t pci) 647{ 648 return (PCI_FUNC(pci->devfn)); 649} 650 651static __inline int ahd_get_pci_slot(ahd_dev_softc_t); 652static __inline int 653ahd_get_pci_slot(ahd_dev_softc_t pci) 654{ 655 return (PCI_SLOT(pci->devfn)); 656} 657 658static __inline int ahd_get_pci_bus(ahd_dev_softc_t); 659static __inline int 660ahd_get_pci_bus(ahd_dev_softc_t pci) 661{ 662 return (pci->bus->number); 663} 664 665static __inline void ahd_flush_device_writes(struct ahd_softc *); 666static __inline void 667ahd_flush_device_writes(struct ahd_softc *ahd) 668{ 669 ahd_inb(ahd, INTSTAT); 670} 671 672/**************************** Proc FS Support *********************************/ 673int ahd_linux_proc_info(struct Scsi_Host *, char *, char **, 674 off_t, int, int); 675 676/*********************** Transaction Access Wrappers **************************/ 677static __inline void ahd_cmd_set_transaction_status(struct scsi_cmnd *, uint32_t); 678static __inline void ahd_set_transaction_status(struct scb *, uint32_t); 679static __inline void ahd_cmd_set_scsi_status(struct scsi_cmnd *, uint32_t); 680static __inline void ahd_set_scsi_status(struct scb *, uint32_t); 681static __inline uint32_t ahd_cmd_get_transaction_status(struct scsi_cmnd *cmd); 682static __inline uint32_t ahd_get_transaction_status(struct scb *); 683static __inline uint32_t ahd_cmd_get_scsi_status(struct scsi_cmnd *cmd); 684static __inline uint32_t ahd_get_scsi_status(struct scb *); 685static __inline void ahd_set_transaction_tag(struct scb *, int, u_int); 686static __inline u_long ahd_get_transfer_length(struct scb *); 687static __inline int ahd_get_transfer_dir(struct scb *); 688static __inline void ahd_set_residual(struct scb *, u_long); 689static __inline void ahd_set_sense_residual(struct scb *scb, u_long resid); 690static __inline u_long ahd_get_residual(struct scb *); 691static __inline u_long ahd_get_sense_residual(struct scb *); 692static __inline int ahd_perform_autosense(struct scb *); 693static __inline uint32_t ahd_get_sense_bufsize(struct ahd_softc *, 694 struct scb *); 695static __inline void ahd_notify_xfer_settings_change(struct ahd_softc *, 696 struct ahd_devinfo *); 697static __inline void ahd_platform_scb_free(struct ahd_softc *ahd, 698 struct scb *scb); 699static __inline void ahd_freeze_scb(struct scb *scb); 700 701static __inline 702void ahd_cmd_set_transaction_status(struct scsi_cmnd *cmd, uint32_t status) 703{ 704 cmd->result &= ~(CAM_STATUS_MASK << 16); 705 cmd->result |= status << 16; 706} 707 708static __inline 709void ahd_set_transaction_status(struct scb *scb, uint32_t status) 710{ 711 ahd_cmd_set_transaction_status(scb->io_ctx,status); 712} 713 714static __inline 715void ahd_cmd_set_scsi_status(struct scsi_cmnd *cmd, uint32_t status) 716{ 717 cmd->result &= ~0xFFFF; 718 cmd->result |= status; 719} 720 721static __inline 722void ahd_set_scsi_status(struct scb *scb, uint32_t status) 723{ 724 ahd_cmd_set_scsi_status(scb->io_ctx, status); 725} 726 727static __inline 728uint32_t ahd_cmd_get_transaction_status(struct scsi_cmnd *cmd) 729{ 730 return ((cmd->result >> 16) & CAM_STATUS_MASK); 731} 732 733static __inline 734uint32_t ahd_get_transaction_status(struct scb *scb) 735{ 736 return (ahd_cmd_get_transaction_status(scb->io_ctx)); 737} 738 739static __inline 740uint32_t ahd_cmd_get_scsi_status(struct scsi_cmnd *cmd) 741{ 742 return (cmd->result & 0xFFFF); 743} 744 745static __inline 746uint32_t ahd_get_scsi_status(struct scb *scb) 747{ 748 return (ahd_cmd_get_scsi_status(scb->io_ctx)); 749} 750 751static __inline 752void ahd_set_transaction_tag(struct scb *scb, int enabled, u_int type) 753{ 754 /* 755 * Nothing to do for linux as the incoming transaction 756 * has no concept of tag/non tagged, etc. 757 */ 758} 759 760static __inline 761u_long ahd_get_transfer_length(struct scb *scb) 762{ 763 return (scb->platform_data->xfer_len); 764} 765 766static __inline 767int ahd_get_transfer_dir(struct scb *scb) 768{ 769 return (scb->io_ctx->sc_data_direction); 770} 771 772static __inline 773void ahd_set_residual(struct scb *scb, u_long resid) 774{ 775 scb->io_ctx->resid = resid; 776} 777 778static __inline 779void ahd_set_sense_residual(struct scb *scb, u_long resid) 780{ 781 scb->platform_data->sense_resid = resid; 782} 783 784static __inline 785u_long ahd_get_residual(struct scb *scb) 786{ 787 return (scb->io_ctx->resid); 788} 789 790static __inline 791u_long ahd_get_sense_residual(struct scb *scb) 792{ 793 return (scb->platform_data->sense_resid); 794} 795 796static __inline 797int ahd_perform_autosense(struct scb *scb) 798{ 799 /* 800 * We always perform autosense in Linux. 801 * On other platforms this is set on a 802 * per-transaction basis. 803 */ 804 return (1); 805} 806 807static __inline uint32_t 808ahd_get_sense_bufsize(struct ahd_softc *ahd, struct scb *scb) 809{ 810 return (sizeof(struct scsi_sense_data)); 811} 812 813static __inline void 814ahd_notify_xfer_settings_change(struct ahd_softc *ahd, 815 struct ahd_devinfo *devinfo) 816{ 817 /* Nothing to do here for linux */ 818} 819 820static __inline void 821ahd_platform_scb_free(struct ahd_softc *ahd, struct scb *scb) 822{ 823 ahd->flags &= ~AHD_RESOURCE_SHORTAGE; 824} 825 826int ahd_platform_alloc(struct ahd_softc *ahd, void *platform_arg); 827void ahd_platform_free(struct ahd_softc *ahd); 828void ahd_platform_init(struct ahd_softc *ahd); 829void ahd_platform_freeze_devq(struct ahd_softc *ahd, struct scb *scb); 830 831static __inline void 832ahd_freeze_scb(struct scb *scb) 833{ 834 if ((scb->io_ctx->result & (CAM_DEV_QFRZN << 16)) == 0) { 835 scb->io_ctx->result |= CAM_DEV_QFRZN << 16; 836 scb->platform_data->dev->qfrozen++; 837 } 838} 839 840void ahd_platform_set_tags(struct ahd_softc *ahd, struct scsi_device *sdev, 841 struct ahd_devinfo *devinfo, ahd_queue_alg); 842int ahd_platform_abort_scbs(struct ahd_softc *ahd, int target, 843 char channel, int lun, u_int tag, 844 role_t role, uint32_t status); 845irqreturn_t 846 ahd_linux_isr(int irq, void *dev_id); 847void ahd_done(struct ahd_softc*, struct scb*); 848void ahd_send_async(struct ahd_softc *, char channel, 849 u_int target, u_int lun, ac_code); 850void ahd_print_path(struct ahd_softc *, struct scb *); 851 852#ifdef CONFIG_PCI 853#define AHD_PCI_CONFIG 1 854#else 855#define AHD_PCI_CONFIG 0 856#endif 857#define bootverbose aic79xx_verbose 858extern uint32_t aic79xx_verbose; 859 860#endif /* _AIC79XX_LINUX_H_ */ 861