drivers/scsi/aic7xxx/aic7xxx_osm.h

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