aic7xxx_osm.h revision 289fe5b1f99c5e61ed32796cbed0a1ecc3589041
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/types.h> 63#include <linux/blkdev.h> 64#include <linux/delay.h> 65#include <linux/ioport.h> 66#include <linux/pci.h> 67#include <linux/smp_lock.h> 68#include <linux/interrupt.h> 69#include <linux/module.h> 70#include <linux/slab.h> 71#include <asm/byteorder.h> 72#include <asm/io.h> 73 74#include <scsi/scsi.h> 75#include <scsi/scsi_cmnd.h> 76#include <scsi/scsi_eh.h> 77#include <scsi/scsi_device.h> 78#include <scsi/scsi_host.h> 79#include <scsi/scsi_tcq.h> 80#include <scsi/scsi_transport.h> 81#include <scsi/scsi_transport_spi.h> 82 83/* Core SCSI definitions */ 84#define AIC_LIB_PREFIX ahc 85 86/* Name space conflict with BSD queue macros */ 87#ifdef LIST_HEAD 88#undef LIST_HEAD 89#endif 90 91#include "cam.h" 92#include "queue.h" 93#include "scsi_message.h" 94#include "aiclib.h" 95 96/*********************************** Debugging ********************************/ 97#ifdef CONFIG_AIC7XXX_DEBUG_ENABLE 98#ifdef CONFIG_AIC7XXX_DEBUG_MASK 99#define AHC_DEBUG 1 100#define AHC_DEBUG_OPTS CONFIG_AIC7XXX_DEBUG_MASK 101#else 102/* 103 * Compile in debugging code, but do not enable any printfs. 104 */ 105#define AHC_DEBUG 1 106#endif 107/* No debugging code. */ 108#endif 109 110/************************* Forward Declarations *******************************/ 111struct ahc_softc; 112typedef struct pci_dev *ahc_dev_softc_t; 113typedef struct scsi_cmnd *ahc_io_ctx_t; 114 115/******************************* Byte Order ***********************************/ 116#define ahc_htobe16(x) cpu_to_be16(x) 117#define ahc_htobe32(x) cpu_to_be32(x) 118#define ahc_htobe64(x) cpu_to_be64(x) 119#define ahc_htole16(x) cpu_to_le16(x) 120#define ahc_htole32(x) cpu_to_le32(x) 121#define ahc_htole64(x) cpu_to_le64(x) 122 123#define ahc_be16toh(x) be16_to_cpu(x) 124#define ahc_be32toh(x) be32_to_cpu(x) 125#define ahc_be64toh(x) be64_to_cpu(x) 126#define ahc_le16toh(x) le16_to_cpu(x) 127#define ahc_le32toh(x) le32_to_cpu(x) 128#define ahc_le64toh(x) le64_to_cpu(x) 129 130/************************* Configuration Data *********************************/ 131extern u_int aic7xxx_no_probe; 132extern u_int aic7xxx_allow_memio; 133extern struct scsi_host_template aic7xxx_driver_template; 134 135/***************************** Bus Space/DMA **********************************/ 136 137typedef uint32_t bus_size_t; 138 139typedef enum { 140 BUS_SPACE_MEMIO, 141 BUS_SPACE_PIO 142} bus_space_tag_t; 143 144typedef union { 145 u_long ioport; 146 volatile uint8_t __iomem *maddr; 147} bus_space_handle_t; 148 149typedef struct bus_dma_segment 150{ 151 dma_addr_t ds_addr; 152 bus_size_t ds_len; 153} bus_dma_segment_t; 154 155struct ahc_linux_dma_tag 156{ 157 bus_size_t alignment; 158 bus_size_t boundary; 159 bus_size_t maxsize; 160}; 161typedef struct ahc_linux_dma_tag* bus_dma_tag_t; 162 163typedef dma_addr_t bus_dmamap_t; 164 165typedef int bus_dma_filter_t(void*, dma_addr_t); 166typedef void bus_dmamap_callback_t(void *, bus_dma_segment_t *, int, int); 167 168#define BUS_DMA_WAITOK 0x0 169#define BUS_DMA_NOWAIT 0x1 170#define BUS_DMA_ALLOCNOW 0x2 171#define BUS_DMA_LOAD_SEGS 0x4 /* 172 * Argument is an S/G list not 173 * a single buffer. 174 */ 175 176#define BUS_SPACE_MAXADDR 0xFFFFFFFF 177#define BUS_SPACE_MAXADDR_32BIT 0xFFFFFFFF 178#define BUS_SPACE_MAXSIZE_32BIT 0xFFFFFFFF 179 180int ahc_dma_tag_create(struct ahc_softc *, bus_dma_tag_t /*parent*/, 181 bus_size_t /*alignment*/, bus_size_t /*boundary*/, 182 dma_addr_t /*lowaddr*/, dma_addr_t /*highaddr*/, 183 bus_dma_filter_t*/*filter*/, void */*filterarg*/, 184 bus_size_t /*maxsize*/, int /*nsegments*/, 185 bus_size_t /*maxsegsz*/, int /*flags*/, 186 bus_dma_tag_t */*dma_tagp*/); 187 188void ahc_dma_tag_destroy(struct ahc_softc *, bus_dma_tag_t /*tag*/); 189 190int ahc_dmamem_alloc(struct ahc_softc *, bus_dma_tag_t /*dmat*/, 191 void** /*vaddr*/, int /*flags*/, 192 bus_dmamap_t* /*mapp*/); 193 194void ahc_dmamem_free(struct ahc_softc *, bus_dma_tag_t /*dmat*/, 195 void* /*vaddr*/, bus_dmamap_t /*map*/); 196 197void ahc_dmamap_destroy(struct ahc_softc *, bus_dma_tag_t /*tag*/, 198 bus_dmamap_t /*map*/); 199 200int ahc_dmamap_load(struct ahc_softc *ahc, bus_dma_tag_t /*dmat*/, 201 bus_dmamap_t /*map*/, void * /*buf*/, 202 bus_size_t /*buflen*/, bus_dmamap_callback_t *, 203 void */*callback_arg*/, int /*flags*/); 204 205int ahc_dmamap_unload(struct ahc_softc *, bus_dma_tag_t, bus_dmamap_t); 206 207/* 208 * Operations performed by ahc_dmamap_sync(). 209 */ 210#define BUS_DMASYNC_PREREAD 0x01 /* pre-read synchronization */ 211#define BUS_DMASYNC_POSTREAD 0x02 /* post-read synchronization */ 212#define BUS_DMASYNC_PREWRITE 0x04 /* pre-write synchronization */ 213#define BUS_DMASYNC_POSTWRITE 0x08 /* post-write synchronization */ 214 215/* 216 * XXX 217 * ahc_dmamap_sync is only used on buffers allocated with 218 * the pci_alloc_consistent() API. Although I'm not sure how 219 * this works on architectures with a write buffer, Linux does 220 * not have an API to sync "coherent" memory. Perhaps we need 221 * to do an mb()? 222 */ 223#define ahc_dmamap_sync(ahc, dma_tag, dmamap, offset, len, op) 224 225/********************************** Includes **********************************/ 226#ifdef CONFIG_AIC7XXX_REG_PRETTY_PRINT 227#define AIC_DEBUG_REGISTERS 1 228#else 229#define AIC_DEBUG_REGISTERS 0 230#endif 231#include "aic7xxx.h" 232 233/***************************** Timer Facilities *******************************/ 234static __inline void 235ahc_scb_timer_reset(struct scb *scb, u_int usec) 236{ 237} 238 239/***************************** SMP support ************************************/ 240#include <linux/spinlock.h> 241 242#define AIC7XXX_DRIVER_VERSION "7.0" 243 244/*************************** Device Data Structures ***************************/ 245/* 246 * A per probed device structure used to deal with some error recovery 247 * scenarios that the Linux mid-layer code just doesn't know how to 248 * handle. The structure allocated for a device only becomes persistent 249 * after a successfully completed inquiry command to the target when 250 * that inquiry data indicates a lun is present. 251 */ 252typedef enum { 253 AHC_DEV_FREEZE_TIL_EMPTY = 0x02, /* Freeze queue until active == 0 */ 254 AHC_DEV_Q_BASIC = 0x10, /* Allow basic device queuing */ 255 AHC_DEV_Q_TAGGED = 0x20, /* Allow full SCSI2 command queueing */ 256 AHC_DEV_PERIODIC_OTAG = 0x40, /* Send OTAG to prevent starvation */ 257} ahc_linux_dev_flags; 258 259struct ahc_linux_target; 260struct ahc_linux_device { 261 /* 262 * The number of transactions currently 263 * queued to the device. 264 */ 265 int active; 266 267 /* 268 * The currently allowed number of 269 * transactions that can be queued to 270 * the device. Must be signed for 271 * conversion from tagged to untagged 272 * mode where the device may have more 273 * than one outstanding active transaction. 274 */ 275 int openings; 276 277 /* 278 * A positive count indicates that this 279 * device's queue is halted. 280 */ 281 u_int qfrozen; 282 283 /* 284 * Cumulative command counter. 285 */ 286 u_long commands_issued; 287 288 /* 289 * The number of tagged transactions when 290 * running at our current opening level 291 * that have been successfully received by 292 * this device since the last QUEUE FULL. 293 */ 294 u_int tag_success_count; 295#define AHC_TAG_SUCCESS_INTERVAL 50 296 297 ahc_linux_dev_flags flags; 298 299 /* 300 * The high limit for the tags variable. 301 */ 302 u_int maxtags; 303 304 /* 305 * The computed number of tags outstanding 306 * at the time of the last QUEUE FULL event. 307 */ 308 u_int tags_on_last_queuefull; 309 310 /* 311 * How many times we have seen a queue full 312 * with the same number of tags. This is used 313 * to stop our adaptive queue depth algorithm 314 * on devices with a fixed number of tags. 315 */ 316 u_int last_queuefull_same_count; 317#define AHC_LOCK_TAGS_COUNT 50 318 319 /* 320 * How many transactions have been queued 321 * without the device going idle. We use 322 * this statistic to determine when to issue 323 * an ordered tag to prevent transaction 324 * starvation. This statistic is only updated 325 * if the AHC_DEV_PERIODIC_OTAG flag is set 326 * on this device. 327 */ 328 u_int commands_since_idle_or_otag; 329#define AHC_OTAG_THRESH 500 330}; 331 332struct ahc_linux_target { 333 struct scsi_device *sdev[AHC_NUM_LUNS]; 334 struct ahc_transinfo last_tinfo; 335 struct ahc_softc *ahc; 336}; 337 338/********************* Definitions Required by the Core ***********************/ 339/* 340 * Number of SG segments we require. So long as the S/G segments for 341 * a particular transaction are allocated in a physically contiguous 342 * manner and are allocated below 4GB, the number of S/G segments is 343 * unrestricted. 344 */ 345#define AHC_NSEG 128 346 347/* 348 * Per-SCB OSM storage. 349 */ 350struct scb_platform_data { 351 struct ahc_linux_device *dev; 352 dma_addr_t buf_busaddr; 353 uint32_t xfer_len; 354 uint32_t sense_resid; /* Auto-Sense residual */ 355}; 356 357/* 358 * Define a structure used for each host adapter. All members are 359 * aligned on a boundary >= the size of the member to honor the 360 * alignment restrictions of the various platforms supported by 361 * this driver. 362 */ 363struct ahc_platform_data { 364 /* 365 * Fields accessed from interrupt context. 366 */ 367 struct scsi_target *starget[AHC_NUM_TARGETS]; 368 369 spinlock_t spin_lock; 370 u_int qfrozen; 371 struct completion *eh_done; 372 struct Scsi_Host *host; /* pointer to scsi host */ 373#define AHC_LINUX_NOIRQ ((uint32_t)~0) 374 uint32_t irq; /* IRQ for this adapter */ 375 uint32_t bios_address; 376 uint32_t mem_busaddr; /* Mem Base Addr */ 377}; 378 379/************************** OS Utility Wrappers *******************************/ 380#define printf printk 381#define M_NOWAIT GFP_ATOMIC 382#define M_WAITOK 0 383#define malloc(size, type, flags) kmalloc(size, flags) 384#define free(ptr, type) kfree(ptr) 385 386static __inline void ahc_delay(long); 387static __inline void 388ahc_delay(long usec) 389{ 390 /* 391 * udelay on Linux can have problems for 392 * multi-millisecond waits. Wait at most 393 * 1024us per call. 394 */ 395 while (usec > 0) { 396 udelay(usec % 1024); 397 usec -= 1024; 398 } 399} 400 401 402/***************************** Low Level I/O **********************************/ 403static __inline uint8_t ahc_inb(struct ahc_softc * ahc, long port); 404static __inline void ahc_outb(struct ahc_softc * ahc, long port, uint8_t val); 405static __inline void ahc_outsb(struct ahc_softc * ahc, long port, 406 uint8_t *, int count); 407static __inline void ahc_insb(struct ahc_softc * ahc, long port, 408 uint8_t *, int count); 409 410static __inline uint8_t 411ahc_inb(struct ahc_softc * ahc, long port) 412{ 413 uint8_t x; 414 415 if (ahc->tag == BUS_SPACE_MEMIO) { 416 x = readb(ahc->bsh.maddr + port); 417 } else { 418 x = inb(ahc->bsh.ioport + port); 419 } 420 mb(); 421 return (x); 422} 423 424static __inline void 425ahc_outb(struct ahc_softc * ahc, long port, uint8_t val) 426{ 427 if (ahc->tag == BUS_SPACE_MEMIO) { 428 writeb(val, ahc->bsh.maddr + port); 429 } else { 430 outb(val, ahc->bsh.ioport + port); 431 } 432 mb(); 433} 434 435static __inline void 436ahc_outsb(struct ahc_softc * ahc, long port, uint8_t *array, int count) 437{ 438 int i; 439 440 /* 441 * There is probably a more efficient way to do this on Linux 442 * but we don't use this for anything speed critical and this 443 * should work. 444 */ 445 for (i = 0; i < count; i++) 446 ahc_outb(ahc, port, *array++); 447} 448 449static __inline void 450ahc_insb(struct ahc_softc * ahc, long port, uint8_t *array, int count) 451{ 452 int i; 453 454 /* 455 * There is probably a more efficient way to do this on Linux 456 * but we don't use this for anything speed critical and this 457 * should work. 458 */ 459 for (i = 0; i < count; i++) 460 *array++ = ahc_inb(ahc, port); 461} 462 463/**************************** Initialization **********************************/ 464int ahc_linux_register_host(struct ahc_softc *, 465 struct scsi_host_template *); 466 467/*************************** Pretty Printing **********************************/ 468struct info_str { 469 char *buffer; 470 int length; 471 off_t offset; 472 int pos; 473}; 474 475void ahc_format_transinfo(struct info_str *info, 476 struct ahc_transinfo *tinfo); 477 478/******************************** Locking *************************************/ 479/* Lock protecting internal data structures */ 480 481static __inline void 482ahc_lockinit(struct ahc_softc *ahc) 483{ 484 spin_lock_init(&ahc->platform_data->spin_lock); 485} 486 487static __inline void 488ahc_lock(struct ahc_softc *ahc, unsigned long *flags) 489{ 490 spin_lock_irqsave(&ahc->platform_data->spin_lock, *flags); 491} 492 493static __inline void 494ahc_unlock(struct ahc_softc *ahc, unsigned long *flags) 495{ 496 spin_unlock_irqrestore(&ahc->platform_data->spin_lock, *flags); 497} 498 499/******************************* PCI Definitions ******************************/ 500/* 501 * PCIM_xxx: mask to locate subfield in register 502 * PCIR_xxx: config register offset 503 * PCIC_xxx: device class 504 * PCIS_xxx: device subclass 505 * PCIP_xxx: device programming interface 506 * PCIV_xxx: PCI vendor ID (only required to fixup ancient devices) 507 * PCID_xxx: device ID 508 */ 509#define PCIR_DEVVENDOR 0x00 510#define PCIR_VENDOR 0x00 511#define PCIR_DEVICE 0x02 512#define PCIR_COMMAND 0x04 513#define PCIM_CMD_PORTEN 0x0001 514#define PCIM_CMD_MEMEN 0x0002 515#define PCIM_CMD_BUSMASTEREN 0x0004 516#define PCIM_CMD_MWRICEN 0x0010 517#define PCIM_CMD_PERRESPEN 0x0040 518#define PCIM_CMD_SERRESPEN 0x0100 519#define PCIR_STATUS 0x06 520#define PCIR_REVID 0x08 521#define PCIR_PROGIF 0x09 522#define PCIR_SUBCLASS 0x0a 523#define PCIR_CLASS 0x0b 524#define PCIR_CACHELNSZ 0x0c 525#define PCIR_LATTIMER 0x0d 526#define PCIR_HEADERTYPE 0x0e 527#define PCIM_MFDEV 0x80 528#define PCIR_BIST 0x0f 529#define PCIR_CAP_PTR 0x34 530 531/* config registers for header type 0 devices */ 532#define PCIR_MAPS 0x10 533#define PCIR_SUBVEND_0 0x2c 534#define PCIR_SUBDEV_0 0x2e 535 536typedef enum 537{ 538 AHC_POWER_STATE_D0, 539 AHC_POWER_STATE_D1, 540 AHC_POWER_STATE_D2, 541 AHC_POWER_STATE_D3 542} ahc_power_state; 543 544/**************************** VL/EISA Routines ********************************/ 545#ifdef CONFIG_EISA 546int ahc_linux_eisa_init(void); 547void ahc_linux_eisa_exit(void); 548int aic7770_map_registers(struct ahc_softc *ahc, 549 u_int port); 550int aic7770_map_int(struct ahc_softc *ahc, u_int irq); 551#else 552static inline int ahc_linux_eisa_init(void) { 553 return -ENODEV; 554} 555static inline void ahc_linux_eisa_exit(void) { 556} 557#endif 558 559/******************************* PCI Routines *********************************/ 560#ifdef CONFIG_PCI 561int ahc_linux_pci_init(void); 562void ahc_linux_pci_exit(void); 563int ahc_pci_map_registers(struct ahc_softc *ahc); 564int ahc_pci_map_int(struct ahc_softc *ahc); 565 566static __inline uint32_t ahc_pci_read_config(ahc_dev_softc_t pci, 567 int reg, int width); 568 569static __inline uint32_t 570ahc_pci_read_config(ahc_dev_softc_t pci, int reg, int width) 571{ 572 switch (width) { 573 case 1: 574 { 575 uint8_t retval; 576 577 pci_read_config_byte(pci, reg, &retval); 578 return (retval); 579 } 580 case 2: 581 { 582 uint16_t retval; 583 pci_read_config_word(pci, reg, &retval); 584 return (retval); 585 } 586 case 4: 587 { 588 uint32_t retval; 589 pci_read_config_dword(pci, reg, &retval); 590 return (retval); 591 } 592 default: 593 panic("ahc_pci_read_config: Read size too big"); 594 /* NOTREACHED */ 595 return (0); 596 } 597} 598 599static __inline void ahc_pci_write_config(ahc_dev_softc_t pci, 600 int reg, uint32_t value, 601 int width); 602 603static __inline void 604ahc_pci_write_config(ahc_dev_softc_t pci, int reg, uint32_t value, int width) 605{ 606 switch (width) { 607 case 1: 608 pci_write_config_byte(pci, reg, value); 609 break; 610 case 2: 611 pci_write_config_word(pci, reg, value); 612 break; 613 case 4: 614 pci_write_config_dword(pci, reg, value); 615 break; 616 default: 617 panic("ahc_pci_write_config: Write size too big"); 618 /* NOTREACHED */ 619 } 620} 621 622static __inline int ahc_get_pci_function(ahc_dev_softc_t); 623static __inline int 624ahc_get_pci_function(ahc_dev_softc_t pci) 625{ 626 return (PCI_FUNC(pci->devfn)); 627} 628 629static __inline int ahc_get_pci_slot(ahc_dev_softc_t); 630static __inline int 631ahc_get_pci_slot(ahc_dev_softc_t pci) 632{ 633 return (PCI_SLOT(pci->devfn)); 634} 635 636static __inline int ahc_get_pci_bus(ahc_dev_softc_t); 637static __inline int 638ahc_get_pci_bus(ahc_dev_softc_t pci) 639{ 640 return (pci->bus->number); 641} 642#else 643static inline int ahc_linux_pci_init(void) { 644 return 0; 645} 646static inline void ahc_linux_pci_exit(void) { 647} 648#endif 649 650static __inline void ahc_flush_device_writes(struct ahc_softc *); 651static __inline void 652ahc_flush_device_writes(struct ahc_softc *ahc) 653{ 654 /* XXX Is this sufficient for all architectures??? */ 655 ahc_inb(ahc, INTSTAT); 656} 657 658/**************************** Proc FS Support *********************************/ 659int ahc_linux_proc_info(struct Scsi_Host *, char *, char **, 660 off_t, int, int); 661 662/*************************** Domain Validation ********************************/ 663/*********************** Transaction Access Wrappers *************************/ 664static __inline void ahc_cmd_set_transaction_status(struct scsi_cmnd *, uint32_t); 665static __inline void ahc_set_transaction_status(struct scb *, uint32_t); 666static __inline void ahc_cmd_set_scsi_status(struct scsi_cmnd *, uint32_t); 667static __inline void ahc_set_scsi_status(struct scb *, uint32_t); 668static __inline uint32_t ahc_cmd_get_transaction_status(struct scsi_cmnd *cmd); 669static __inline uint32_t ahc_get_transaction_status(struct scb *); 670static __inline uint32_t ahc_cmd_get_scsi_status(struct scsi_cmnd *cmd); 671static __inline uint32_t ahc_get_scsi_status(struct scb *); 672static __inline void ahc_set_transaction_tag(struct scb *, int, u_int); 673static __inline u_long ahc_get_transfer_length(struct scb *); 674static __inline int ahc_get_transfer_dir(struct scb *); 675static __inline void ahc_set_residual(struct scb *, u_long); 676static __inline void ahc_set_sense_residual(struct scb *scb, u_long resid); 677static __inline u_long ahc_get_residual(struct scb *); 678static __inline u_long ahc_get_sense_residual(struct scb *); 679static __inline int ahc_perform_autosense(struct scb *); 680static __inline uint32_t ahc_get_sense_bufsize(struct ahc_softc *, 681 struct scb *); 682static __inline void ahc_notify_xfer_settings_change(struct ahc_softc *, 683 struct ahc_devinfo *); 684static __inline void ahc_platform_scb_free(struct ahc_softc *ahc, 685 struct scb *scb); 686static __inline void ahc_freeze_scb(struct scb *scb); 687 688static __inline 689void ahc_cmd_set_transaction_status(struct scsi_cmnd *cmd, uint32_t status) 690{ 691 cmd->result &= ~(CAM_STATUS_MASK << 16); 692 cmd->result |= status << 16; 693} 694 695static __inline 696void ahc_set_transaction_status(struct scb *scb, uint32_t status) 697{ 698 ahc_cmd_set_transaction_status(scb->io_ctx,status); 699} 700 701static __inline 702void ahc_cmd_set_scsi_status(struct scsi_cmnd *cmd, uint32_t status) 703{ 704 cmd->result &= ~0xFFFF; 705 cmd->result |= status; 706} 707 708static __inline 709void ahc_set_scsi_status(struct scb *scb, uint32_t status) 710{ 711 ahc_cmd_set_scsi_status(scb->io_ctx, status); 712} 713 714static __inline 715uint32_t ahc_cmd_get_transaction_status(struct scsi_cmnd *cmd) 716{ 717 return ((cmd->result >> 16) & CAM_STATUS_MASK); 718} 719 720static __inline 721uint32_t ahc_get_transaction_status(struct scb *scb) 722{ 723 return (ahc_cmd_get_transaction_status(scb->io_ctx)); 724} 725 726static __inline 727uint32_t ahc_cmd_get_scsi_status(struct scsi_cmnd *cmd) 728{ 729 return (cmd->result & 0xFFFF); 730} 731 732static __inline 733uint32_t ahc_get_scsi_status(struct scb *scb) 734{ 735 return (ahc_cmd_get_scsi_status(scb->io_ctx)); 736} 737 738static __inline 739void ahc_set_transaction_tag(struct scb *scb, int enabled, u_int type) 740{ 741 /* 742 * Nothing to do for linux as the incoming transaction 743 * has no concept of tag/non tagged, etc. 744 */ 745} 746 747static __inline 748u_long ahc_get_transfer_length(struct scb *scb) 749{ 750 return (scb->platform_data->xfer_len); 751} 752 753static __inline 754int ahc_get_transfer_dir(struct scb *scb) 755{ 756 return (scb->io_ctx->sc_data_direction); 757} 758 759static __inline 760void ahc_set_residual(struct scb *scb, u_long resid) 761{ 762 scb->io_ctx->resid = resid; 763} 764 765static __inline 766void ahc_set_sense_residual(struct scb *scb, u_long resid) 767{ 768 scb->platform_data->sense_resid = resid; 769} 770 771static __inline 772u_long ahc_get_residual(struct scb *scb) 773{ 774 return (scb->io_ctx->resid); 775} 776 777static __inline 778u_long ahc_get_sense_residual(struct scb *scb) 779{ 780 return (scb->platform_data->sense_resid); 781} 782 783static __inline 784int ahc_perform_autosense(struct scb *scb) 785{ 786 /* 787 * We always perform autosense in Linux. 788 * On other platforms this is set on a 789 * per-transaction basis. 790 */ 791 return (1); 792} 793 794static __inline uint32_t 795ahc_get_sense_bufsize(struct ahc_softc *ahc, struct scb *scb) 796{ 797 return (sizeof(struct scsi_sense_data)); 798} 799 800static __inline void 801ahc_notify_xfer_settings_change(struct ahc_softc *ahc, 802 struct ahc_devinfo *devinfo) 803{ 804 /* Nothing to do here for linux */ 805} 806 807static __inline void 808ahc_platform_scb_free(struct ahc_softc *ahc, struct scb *scb) 809{ 810} 811 812int ahc_platform_alloc(struct ahc_softc *ahc, void *platform_arg); 813void ahc_platform_free(struct ahc_softc *ahc); 814void ahc_platform_freeze_devq(struct ahc_softc *ahc, struct scb *scb); 815 816static __inline void 817ahc_freeze_scb(struct scb *scb) 818{ 819 if ((scb->io_ctx->result & (CAM_DEV_QFRZN << 16)) == 0) { 820 scb->io_ctx->result |= CAM_DEV_QFRZN << 16; 821 scb->platform_data->dev->qfrozen++; 822 } 823} 824 825void ahc_platform_set_tags(struct ahc_softc *ahc, 826 struct ahc_devinfo *devinfo, ahc_queue_alg); 827int ahc_platform_abort_scbs(struct ahc_softc *ahc, int target, 828 char channel, int lun, u_int tag, 829 role_t role, uint32_t status); 830irqreturn_t 831 ahc_linux_isr(int irq, void *dev_id); 832void ahc_platform_flushwork(struct ahc_softc *ahc); 833void ahc_done(struct ahc_softc*, struct scb*); 834void ahc_send_async(struct ahc_softc *, char channel, 835 u_int target, u_int lun, ac_code, void *); 836void ahc_print_path(struct ahc_softc *, struct scb *); 837void ahc_platform_dump_card_state(struct ahc_softc *ahc); 838 839#ifdef CONFIG_PCI 840#define AHC_PCI_CONFIG 1 841#else 842#define AHC_PCI_CONFIG 0 843#endif 844#define bootverbose aic7xxx_verbose 845extern u_int aic7xxx_verbose; 846#endif /* _AIC7XXX_LINUX_H_ */ 847