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