drivers/scsi/aic7xxx/aic79xx_osm.h

   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 *******************************/
  98 struct ahd_softc;
  99 typedef struct pci_dev *ahd_dev_softc_t;
 100 typedef 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 *********************************/
 118 extern uint32_t aic79xx_allow_memio;
 119 extern struct scsi_host_template aic79xx_driver_template;
 120
 121 /***************************** Bus Space/DMA **********************************/
 122
 123 typedef uint32_t bus_size_t;
 124
 125 typedef enum {
 126         BUS_SPACE_MEMIO,
 127         BUS_SPACE_PIO
 128 } bus_space_tag_t;
 129
 130 typedef union {
 131         u_long            ioport;
 132         volatile uint8_t __iomem *maddr;
 133 } bus_space_handle_t;
 134
 135 typedef struct bus_dma_segment
 136 {
 137         dma_addr_t      ds_addr;
 138         bus_size_t      ds_len;
 139 } bus_dma_segment_t;
 140
 141 struct ahd_linux_dma_tag
 142 {
 143         bus_size_t      alignment;
 144         bus_size_t      boundary;
 145         bus_size_t      maxsize;
 146 };
 147 typedef struct ahd_linux_dma_tag* bus_dma_tag_t;
 148
 149 typedef dma_addr_t bus_dmamap_t;
 150
 151 typedef int bus_dma_filter_t(void*, dma_addr_t);
 152 typedef 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
 166 int     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
 174 void    ahd_dma_tag_destroy(struct ahd_softc *, bus_dma_tag_t /*tag*/);
 175
 176 int     ahd_dmamem_alloc(struct ahd_softc *, bus_dma_tag_t /*dmat*/,
 177                          void** /*vaddr*/, int /*flags*/,
 178                          bus_dmamap_t* /*mapp*/);
 179
 180 void    ahd_dmamem_free(struct ahd_softc *, bus_dma_tag_t /*dmat*/,
 181                         void* /*vaddr*/, bus_dmamap_t /*map*/);
 182
 183 void    ahd_dmamap_destroy(struct ahd_softc *, bus_dma_tag_t /*tag*/,
 184                            bus_dmamap_t /*map*/);
 185
 186 int     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
 191 int     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 /*
 202  * XXX
 203  * ahd_dmamap_sync is only used on buffers allocated with
 204  * the pci_alloc_consistent() API.  Although I'm not sure how
 205  * this works on architectures with a write buffer, Linux does
 206  * not have an API to sync "coherent" memory.  Perhaps we need
 207  * to do an mb()?
 208  */
 209 #define ahd_dmamap_sync(ahd, dma_tag, dmamap, offset, len, op)
 210
 211 /************************** Timer DataStructures ******************************/
 212 typedef struct timer_list ahd_timer_t;
 213
 214 /********************************** Includes **********************************/
 215 #ifdef CONFIG_AIC79XX_REG_PRETTY_PRINT
 216 #define AIC_DEBUG_REGISTERS 1
 217 #else
 218 #define AIC_DEBUG_REGISTERS 0
 219 #endif
 220 #include "aic79xx.h"
 221
 222 /***************************** Timer Facilities *******************************/
 223 #define ahd_timer_init init_timer
 224 #define ahd_timer_stop del_timer_sync
 225
 226 /***************************** SMP support ************************************/
 227 #include <linux/spinlock.h>
 228
 229 #define AIC79XX_DRIVER_VERSION "3.0"
 230
 231 /*************************** Device Data Structures ***************************/
 232 /*
 233  * A per probed device structure used to deal with some error recovery
 234  * scenarios that the Linux mid-layer code just doesn't know how to
 235  * handle.  The structure allocated for a device only becomes persistent
 236  * after a successfully completed inquiry command to the target when
 237  * that inquiry data indicates a lun is present.
 238  */
 239
 240 typedef enum {
 241         AHD_DEV_FREEZE_TIL_EMPTY = 0x02, /* Freeze queue until active == 0 */
 242         AHD_DEV_Q_BASIC          = 0x10, /* Allow basic device queuing */
 243         AHD_DEV_Q_TAGGED         = 0x20, /* Allow full SCSI2 command queueing */
 244         AHD_DEV_PERIODIC_OTAG    = 0x40, /* Send OTAG to prevent starvation */
 245 } ahd_linux_dev_flags;
 246
 247 struct ahd_linux_device {
 248         TAILQ_ENTRY(ahd_linux_device) links;
 249
 250         /*
 251          * The number of transactions currently
 252          * queued to the device.
 253          */
 254         int                     active;
 255
 256         /*
 257          * The currently allowed number of
 258          * transactions that can be queued to
 259          * the device.  Must be signed for
 260          * conversion from tagged to untagged
 261          * mode where the device may have more
 262          * than one outstanding active transaction.
 263          */
 264         int                     openings;
 265
 266         /*
 267          * A positive count indicates that this
 268          * device's queue is halted.
 269          */
 270         u_int                   qfrozen;
 271
 272         /*
 273          * Cumulative command counter.
 274          */
 275         u_long                  commands_issued;
 276
 277         /*
 278          * The number of tagged transactions when
 279          * running at our current opening level
 280          * that have been successfully received by
 281          * this device since the last QUEUE FULL.
 282          */
 283         u_int                   tag_success_count;
 284 #define AHD_TAG_SUCCESS_INTERVAL 50
 285
 286         ahd_linux_dev_flags     flags;
 287
 288         /*
 289          * Per device timer.
 290          */
 291         struct timer_list       timer;
 292
 293         /*
 294          * The high limit for the tags variable.
 295          */
 296         u_int                   maxtags;
 297
 298         /*
 299          * The computed number of tags outstanding
 300          * at the time of the last QUEUE FULL event.
 301          */
 302         u_int                   tags_on_last_queuefull;
 303
 304         /*
 305          * How many times we have seen a queue full
 306          * with the same number of tags.  This is used
 307          * to stop our adaptive queue depth algorithm
 308          * on devices with a fixed number of tags.
 309          */
 310         u_int                   last_queuefull_same_count;
 311 #define AHD_LOCK_TAGS_COUNT 50
 312
 313         /*
 314          * How many transactions have been queued
 315          * without the device going idle.  We use
 316          * this statistic to determine when to issue
 317          * an ordered tag to prevent transaction
 318          * starvation.  This statistic is only updated
 319          * if the AHD_DEV_PERIODIC_OTAG flag is set
 320          * on this device.
 321          */
 322         u_int                   commands_since_idle_or_otag;
 323 #define AHD_OTAG_THRESH 500
 324 };
 325
 326 /********************* Definitions Required by the Core ***********************/
 327 /*
 328  * Number of SG segments we require.  So long as the S/G segments for
 329  * a particular transaction are allocated in a physically contiguous
 330  * manner and are allocated below 4GB, the number of S/G segments is
 331  * unrestricted.
 332  */
 333 #define AHD_NSEG 128
 334
 335 /*
 336  * Per-SCB OSM storage.
 337  */
 338 struct scb_platform_data {
 339         struct ahd_linux_device *dev;
 340         dma_addr_t               buf_busaddr;
 341         uint32_t                 xfer_len;
 342         uint32_t                 sense_resid;   /* Auto-Sense residual */
 343 };
 344
 345 /*
 346  * Define a structure used for each host adapter.  All members are
 347  * aligned on a boundary >= the size of the member to honor the
 348  * alignment restrictions of the various platforms supported by
 349  * this driver.
 350  */
 351 struct ahd_platform_data {
 352         /*
 353          * Fields accessed from interrupt context.
 354          */
 355         struct scsi_target *starget[AHD_NUM_TARGETS];
 356
 357         spinlock_t               spin_lock;
 358         struct completion       *eh_done;
 359         struct Scsi_Host        *host;          /* pointer to scsi host */
 360 #define AHD_LINUX_NOIRQ ((uint32_t)~0)
 361         uint32_t                 irq;           /* IRQ for this adapter */
 362         uint32_t                 bios_address;
 363         resource_size_t          mem_busaddr;   /* Mem Base Addr */
 364 };
 365
 366 void ahd_delay(long);
 367
 368 /***************************** Low Level I/O **********************************/
 369 uint8_t ahd_inb(struct ahd_softc * ahd, long port);
 370 void ahd_outb(struct ahd_softc * ahd, long port, uint8_t val);
 371 void ahd_outw_atomic(struct ahd_softc * ahd,
 372                                      long port, uint16_t val);
 373 void ahd_outsb(struct ahd_softc * ahd, long port,
 374                                uint8_t *, int count);
 375 void ahd_insb(struct ahd_softc * ahd, long port,
 376                                uint8_t *, int count);
 377
 378 /**************************** Initialization **********************************/
 379 int             ahd_linux_register_host(struct ahd_softc *,
 380                                         struct scsi_host_template *);
 381
 382 /*************************** Pretty Printing **********************************/
 383 struct info_str {
 384         char *buffer;
 385         int length;
 386         off_t offset;
 387         int pos;
 388 };
 389
 390 /******************************** Locking *************************************/
 391 static inline void
 392 ahd_lockinit(struct ahd_softc *ahd)
 393 {
 394         spin_lock_init(&ahd->platform_data->spin_lock);
 395 }
 396
 397 static inline void
 398 ahd_lock(struct ahd_softc *ahd, unsigned long *flags)
 399 {
 400         spin_lock_irqsave(&ahd->platform_data->spin_lock, *flags);
 401 }
 402
 403 static inline void
 404 ahd_unlock(struct ahd_softc *ahd, unsigned long *flags)
 405 {
 406         spin_unlock_irqrestore(&ahd->platform_data->spin_lock, *flags);
 407 }
 408
 409 /******************************* PCI Definitions ******************************/
 410 /*
 411  * PCIM_xxx: mask to locate subfield in register
 412  * PCIR_xxx: config register offset
 413  * PCIC_xxx: device class
 414  * PCIS_xxx: device subclass
 415  * PCIP_xxx: device programming interface
 416  * PCIV_xxx: PCI vendor ID (only required to fixup ancient devices)
 417  * PCID_xxx: device ID
 418  */
 419 #define PCIR_DEVVENDOR          0x00
 420 #define PCIR_VENDOR             0x00
 421 #define PCIR_DEVICE             0x02
 422 #define PCIR_COMMAND            0x04
 423 #define PCIM_CMD_PORTEN         0x0001
 424 #define PCIM_CMD_MEMEN          0x0002
 425 #define PCIM_CMD_BUSMASTEREN    0x0004
 426 #define PCIM_CMD_MWRICEN        0x0010
 427 #define PCIM_CMD_PERRESPEN      0x0040
 428 #define PCIM_CMD_SERRESPEN      0x0100
 429 #define PCIR_STATUS             0x06
 430 #define PCIR_REVID              0x08
 431 #define PCIR_PROGIF             0x09
 432 #define PCIR_SUBCLASS           0x0a
 433 #define PCIR_CLASS              0x0b
 434 #define PCIR_CACHELNSZ          0x0c
 435 #define PCIR_LATTIMER           0x0d
 436 #define PCIR_HEADERTYPE         0x0e
 437 #define PCIM_MFDEV              0x80
 438 #define PCIR_BIST               0x0f
 439 #define PCIR_CAP_PTR            0x34
 440
 441 /* config registers for header type 0 devices */
 442 #define PCIR_MAPS       0x10
 443 #define PCIR_SUBVEND_0  0x2c
 444 #define PCIR_SUBDEV_0   0x2e
 445
 446 /****************************** PCI-X definitions *****************************/
 447 #define PCIXR_COMMAND   0x96
 448 #define PCIXR_DEVADDR   0x98
 449 #define PCIXM_DEVADDR_FNUM      0x0003  /* Function Number */
 450 #define PCIXM_DEVADDR_DNUM      0x00F8  /* Device Number */
 451 #define PCIXM_DEVADDR_BNUM      0xFF00  /* Bus Number */
 452 #define PCIXR_STATUS    0x9A
 453 #define PCIXM_STATUS_64BIT      0x0001  /* Active 64bit connection to device. */
 454 #define PCIXM_STATUS_133CAP     0x0002  /* Device is 133MHz capable */
 455 #define PCIXM_STATUS_SCDISC     0x0004  /* Split Completion Discarded */
 456 #define PCIXM_STATUS_UNEXPSC    0x0008  /* Unexpected Split Completion */
 457 #define PCIXM_STATUS_CMPLEXDEV  0x0010  /* Device Complexity (set == bridge) */
 458 #define PCIXM_STATUS_MAXMRDBC   0x0060  /* Maximum Burst Read Count */
 459 #define PCIXM_STATUS_MAXSPLITS  0x0380  /* Maximum Split Transactions */
 460 #define PCIXM_STATUS_MAXCRDS    0x1C00  /* Maximum Cumulative Read Size */
 461 #define PCIXM_STATUS_RCVDSCEM   0x2000  /* Received a Split Comp w/Error msg */
 462
 463 typedef enum
 464 {
 465         AHD_POWER_STATE_D0,
 466         AHD_POWER_STATE_D1,
 467         AHD_POWER_STATE_D2,
 468         AHD_POWER_STATE_D3
 469 } ahd_power_state;
 470
 471 void ahd_power_state_change(struct ahd_softc *ahd,
 472                             ahd_power_state new_state);
 473
 474 /******************************* PCI Routines *********************************/
 475 int                      ahd_linux_pci_init(void);
 476 void                     ahd_linux_pci_exit(void);
 477 int                      ahd_pci_map_registers(struct ahd_softc *ahd);
 478 int                      ahd_pci_map_int(struct ahd_softc *ahd);
 479
 480 uint32_t                 ahd_pci_read_config(ahd_dev_softc_t pci,
 481                                              int reg, int width);
 482 void                     ahd_pci_write_config(ahd_dev_softc_t pci,
 483                                           int reg, uint32_t value,
 484                                           int width);
 485
 486 static inline int ahd_get_pci_function(ahd_dev_softc_t);
 487 static inline int
 488 ahd_get_pci_function(ahd_dev_softc_t pci)
 489 {
 490         return (PCI_FUNC(pci->devfn));
 491 }
 492
 493 static inline int ahd_get_pci_slot(ahd_dev_softc_t);
 494 static inline int
 495 ahd_get_pci_slot(ahd_dev_softc_t pci)
 496 {
 497         return (PCI_SLOT(pci->devfn));
 498 }
 499
 500 static inline int ahd_get_pci_bus(ahd_dev_softc_t);
 501 static inline int
 502 ahd_get_pci_bus(ahd_dev_softc_t pci)
 503 {
 504         return (pci->bus->number);
 505 }
 506
 507 static inline void ahd_flush_device_writes(struct ahd_softc *);
 508 static inline void
 509 ahd_flush_device_writes(struct ahd_softc *ahd)
 510 {
 511         /* XXX Is this sufficient for all architectures??? */
 512         ahd_inb(ahd, INTSTAT);
 513 }
 514
 515 /**************************** Proc FS Support *********************************/
 516 int     ahd_linux_proc_info(struct Scsi_Host *, char *, char **,
 517                             off_t, int, int);
 518
 519 /*********************** Transaction Access Wrappers **************************/
 520 static inline void ahd_cmd_set_transaction_status(struct scsi_cmnd *, uint32_t);
 521 static inline void ahd_set_transaction_status(struct scb *, uint32_t);
 522 static inline void ahd_cmd_set_scsi_status(struct scsi_cmnd *, uint32_t);
 523 static inline void ahd_set_scsi_status(struct scb *, uint32_t);
 524 static inline uint32_t ahd_cmd_get_transaction_status(struct scsi_cmnd *cmd);
 525 static inline uint32_t ahd_get_transaction_status(struct scb *);
 526 static inline uint32_t ahd_cmd_get_scsi_status(struct scsi_cmnd *cmd);
 527 static inline uint32_t ahd_get_scsi_status(struct scb *);
 528 static inline void ahd_set_transaction_tag(struct scb *, int, u_int);
 529 static inline u_long ahd_get_transfer_length(struct scb *);
 530 static inline int ahd_get_transfer_dir(struct scb *);
 531 static inline void ahd_set_residual(struct scb *, u_long);
 532 static inline void ahd_set_sense_residual(struct scb *scb, u_long resid);
 533 static inline u_long ahd_get_residual(struct scb *);
 534 static inline u_long ahd_get_sense_residual(struct scb *);
 535 static inline int ahd_perform_autosense(struct scb *);
 536 static inline uint32_t ahd_get_sense_bufsize(struct ahd_softc *,
 537                                                struct scb *);
 538 static inline void ahd_notify_xfer_settings_change(struct ahd_softc *,
 539                                                      struct ahd_devinfo *);
 540 static inline void ahd_platform_scb_free(struct ahd_softc *ahd,
 541                                            struct scb *scb);
 542 static inline void ahd_freeze_scb(struct scb *scb);
 543
 544 static inline
 545 void ahd_cmd_set_transaction_status(struct scsi_cmnd *cmd, uint32_t status)
 546 {
 547         cmd->result &= ~(CAM_STATUS_MASK << 16);
 548         cmd->result |= status << 16;
 549 }
 550
 551 static inline
 552 void ahd_set_transaction_status(struct scb *scb, uint32_t status)
 553 {
 554         ahd_cmd_set_transaction_status(scb->io_ctx,status);
 555 }
 556
 557 static inline
 558 void ahd_cmd_set_scsi_status(struct scsi_cmnd *cmd, uint32_t status)
 559 {
 560         cmd->result &= ~0xFFFF;
 561         cmd->result |= status;
 562 }
 563
 564 static inline
 565 void ahd_set_scsi_status(struct scb *scb, uint32_t status)
 566 {
 567         ahd_cmd_set_scsi_status(scb->io_ctx, status);
 568 }
 569
 570 static inline
 571 uint32_t ahd_cmd_get_transaction_status(struct scsi_cmnd *cmd)
 572 {
 573         return ((cmd->result >> 16) & CAM_STATUS_MASK);
 574 }
 575
 576 static inline
 577 uint32_t ahd_get_transaction_status(struct scb *scb)
 578 {
 579         return (ahd_cmd_get_transaction_status(scb->io_ctx));
 580 }
 581
 582 static inline
 583 uint32_t ahd_cmd_get_scsi_status(struct scsi_cmnd *cmd)
 584 {
 585         return (cmd->result & 0xFFFF);
 586 }
 587
 588 static inline
 589 uint32_t ahd_get_scsi_status(struct scb *scb)
 590 {
 591         return (ahd_cmd_get_scsi_status(scb->io_ctx));
 592 }
 593
 594 static inline
 595 void ahd_set_transaction_tag(struct scb *scb, int enabled, u_int type)
 596 {
 597         /*
 598          * Nothing to do for linux as the incoming transaction
 599          * has no concept of tag/non tagged, etc.
 600          */
 601 }
 602
 603 static inline
 604 u_long ahd_get_transfer_length(struct scb *scb)
 605 {
 606         return (scb->platform_data->xfer_len);
 607 }
 608
 609 static inline
 610 int ahd_get_transfer_dir(struct scb *scb)
 611 {
 612         return (scb->io_ctx->sc_data_direction);
 613 }
 614
 615 static inline
 616 void ahd_set_residual(struct scb *scb, u_long resid)
 617 {
 618         scsi_set_resid(scb->io_ctx, resid);
 619 }
 620
 621 static inline
 622 void ahd_set_sense_residual(struct scb *scb, u_long resid)
 623 {
 624         scb->platform_data->sense_resid = resid;
 625 }
 626
 627 static inline
 628 u_long ahd_get_residual(struct scb *scb)
 629 {
 630         return scsi_get_resid(scb->io_ctx);
 631 }
 632
 633 static inline
 634 u_long ahd_get_sense_residual(struct scb *scb)
 635 {
 636         return (scb->platform_data->sense_resid);
 637 }
 638
 639 static inline
 640 int ahd_perform_autosense(struct scb *scb)
 641 {
 642         /*
 643          * We always perform autosense in Linux.
 644          * On other platforms this is set on a
 645          * per-transaction basis.
 646          */
 647         return (1);
 648 }
 649
 650 static inline uint32_t
 651 ahd_get_sense_bufsize(struct ahd_softc *ahd, struct scb *scb)
 652 {
 653         return (sizeof(struct scsi_sense_data));
 654 }
 655
 656 static inline void
 657 ahd_notify_xfer_settings_change(struct ahd_softc *ahd,
 658                                 struct ahd_devinfo *devinfo)
 659 {
 660         /* Nothing to do here for linux */
 661 }
 662
 663 static inline void
 664 ahd_platform_scb_free(struct ahd_softc *ahd, struct scb *scb)
 665 {
 666         ahd->flags &= ~AHD_RESOURCE_SHORTAGE;
 667 }
 668
 669 int     ahd_platform_alloc(struct ahd_softc *ahd, void *platform_arg);
 670 void    ahd_platform_free(struct ahd_softc *ahd);
 671 void    ahd_platform_init(struct ahd_softc *ahd);
 672 void    ahd_platform_freeze_devq(struct ahd_softc *ahd, struct scb *scb);
 673
 674 static inline void
 675 ahd_freeze_scb(struct scb *scb)
 676 {
 677         if ((scb->io_ctx->result & (CAM_DEV_QFRZN << 16)) == 0) {
 678                 scb->io_ctx->result |= CAM_DEV_QFRZN << 16;
 679                 scb->platform_data->dev->qfrozen++;
 680         }
 681 }
 682
 683 void    ahd_platform_set_tags(struct ahd_softc *ahd, struct scsi_device *sdev,
 684                               struct ahd_devinfo *devinfo, ahd_queue_alg);
 685 int     ahd_platform_abort_scbs(struct ahd_softc *ahd, int target,
 686                                 char channel, int lun, u_int tag,
 687                                 role_t role, uint32_t status);
 688 irqreturn_t
 689         ahd_linux_isr(int irq, void *dev_id);
 690 void    ahd_done(struct ahd_softc*, struct scb*);
 691 void    ahd_send_async(struct ahd_softc *, char channel,
 692                        u_int target, u_int lun, ac_code);
 693 void    ahd_print_path(struct ahd_softc *, struct scb *);
 694
 695 #ifdef CONFIG_PCI
 696 #define AHD_PCI_CONFIG 1
 697 #else
 698 #define AHD_PCI_CONFIG 0
 699 #endif
 700 #define bootverbose aic79xx_verbose
 701 extern uint32_t aic79xx_verbose;
 702
 703 #endif /* _AIC79XX_LINUX_H_ */