Bootlin logo

Elixir Cross Referencer

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
/*
 * Adaptec AIC79xx device driver for Linux.
 *
 * Copyright (c) 2000-2001 Adaptec Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions, and the following disclaimer,
 *    without modification.
 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
 *    substantially similar to the "NO WARRANTY" disclaimer below
 *    ("Disclaimer") and any redistribution must be conditioned upon
 *    including a substantially similar Disclaimer requirement for further
 *    binary redistribution.
 * 3. Neither the names of the above-listed copyright holders nor the names
 *    of any contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * Alternatively, this software may be distributed under the terms of the
 * GNU General Public License ("GPL") version 2 as published by the Free
 * Software Foundation.
 *
 * NO WARRANTY
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGES.
 *
 * $Id: //depot/aic7xxx/linux/drivers/scsi/aic7xxx/aic79xx_osm.h#166 $
 *
 */
#ifndef _AIC79XX_LINUX_H_
#define _AIC79XX_LINUX_H_

#include <linux/types.h>
#include <linux/blkdev.h>
#include <linux/delay.h>
#include <linux/ioport.h>
#include <linux/pci.h>
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <asm/byteorder.h>
#include <asm/io.h>

#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_eh.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_tcq.h>
#include <scsi/scsi_transport.h>
#include <scsi/scsi_transport_spi.h>

/* Core SCSI definitions */
#define AIC_LIB_PREFIX ahd

#include "cam.h"
#include "queue.h"
#include "scsi_message.h"
#include "scsi_iu.h"
#include "aiclib.h"

/*********************************** Debugging ********************************/
#ifdef CONFIG_AIC79XX_DEBUG_ENABLE
#ifdef CONFIG_AIC79XX_DEBUG_MASK
#define AHD_DEBUG 1
#define AHD_DEBUG_OPTS CONFIG_AIC79XX_DEBUG_MASK
#else
/*
 * Compile in debugging code, but do not enable any printfs.
 */
#define AHD_DEBUG 1
#define AHD_DEBUG_OPTS 0
#endif
/* No debugging code. */
#endif

/********************************** Misc Macros *******************************/
#define	powerof2(x)	((((x)-1)&(x))==0)

/************************* Forward Declarations *******************************/
struct ahd_softc;
typedef struct pci_dev *ahd_dev_softc_t;
typedef struct scsi_cmnd      *ahd_io_ctx_t;

/******************************* Byte Order ***********************************/
#define ahd_htobe16(x)	cpu_to_be16(x)
#define ahd_htobe32(x)	cpu_to_be32(x)
#define ahd_htobe64(x)	cpu_to_be64(x)
#define ahd_htole16(x)	cpu_to_le16(x)
#define ahd_htole32(x)	cpu_to_le32(x)
#define ahd_htole64(x)	cpu_to_le64(x)

#define ahd_be16toh(x)	be16_to_cpu(x)
#define ahd_be32toh(x)	be32_to_cpu(x)
#define ahd_be64toh(x)	be64_to_cpu(x)
#define ahd_le16toh(x)	le16_to_cpu(x)
#define ahd_le32toh(x)	le32_to_cpu(x)
#define ahd_le64toh(x)	le64_to_cpu(x)

/************************* Configuration Data *********************************/
extern uint32_t aic79xx_allow_memio;
extern struct scsi_host_template aic79xx_driver_template;

/***************************** Bus Space/DMA **********************************/

typedef uint32_t bus_size_t;

typedef enum {
	BUS_SPACE_MEMIO,
	BUS_SPACE_PIO
} bus_space_tag_t;

typedef union {
	u_long		  ioport;
	volatile uint8_t __iomem *maddr;
} bus_space_handle_t;

typedef struct bus_dma_segment
{
	dma_addr_t	ds_addr;
	bus_size_t	ds_len;
} bus_dma_segment_t;

struct ahd_linux_dma_tag
{
	bus_size_t	alignment;
	bus_size_t	boundary;
	bus_size_t	maxsize;
};
typedef struct ahd_linux_dma_tag* bus_dma_tag_t;

typedef dma_addr_t bus_dmamap_t;

typedef int bus_dma_filter_t(void*, dma_addr_t);
typedef void bus_dmamap_callback_t(void *, bus_dma_segment_t *, int, int);

#define BUS_DMA_WAITOK		0x0
#define BUS_DMA_NOWAIT		0x1
#define BUS_DMA_ALLOCNOW	0x2
#define BUS_DMA_LOAD_SEGS	0x4	/*
					 * Argument is an S/G list not
					 * a single buffer.
					 */

#define BUS_SPACE_MAXADDR	0xFFFFFFFF
#define BUS_SPACE_MAXADDR_32BIT	0xFFFFFFFF
#define BUS_SPACE_MAXSIZE_32BIT	0xFFFFFFFF

int	ahd_dma_tag_create(struct ahd_softc *, bus_dma_tag_t /*parent*/,
			   bus_size_t /*alignment*/, bus_size_t /*boundary*/,
			   dma_addr_t /*lowaddr*/, dma_addr_t /*highaddr*/,
			   bus_dma_filter_t*/*filter*/, void */*filterarg*/,
			   bus_size_t /*maxsize*/, int /*nsegments*/,
			   bus_size_t /*maxsegsz*/, int /*flags*/,
			   bus_dma_tag_t */*dma_tagp*/);

void	ahd_dma_tag_destroy(struct ahd_softc *, bus_dma_tag_t /*tag*/);

int	ahd_dmamem_alloc(struct ahd_softc *, bus_dma_tag_t /*dmat*/,
			 void** /*vaddr*/, int /*flags*/,
			 bus_dmamap_t* /*mapp*/);

void	ahd_dmamem_free(struct ahd_softc *, bus_dma_tag_t /*dmat*/,
			void* /*vaddr*/, bus_dmamap_t /*map*/);

void	ahd_dmamap_destroy(struct ahd_softc *, bus_dma_tag_t /*tag*/,
			   bus_dmamap_t /*map*/);

int	ahd_dmamap_load(struct ahd_softc *ahd, bus_dma_tag_t /*dmat*/,
			bus_dmamap_t /*map*/, void * /*buf*/,
			bus_size_t /*buflen*/, bus_dmamap_callback_t *,
			void */*callback_arg*/, int /*flags*/);

int	ahd_dmamap_unload(struct ahd_softc *, bus_dma_tag_t, bus_dmamap_t);

/*
 * Operations performed by ahd_dmamap_sync().
 */
#define BUS_DMASYNC_PREREAD	0x01	/* pre-read synchronization */
#define BUS_DMASYNC_POSTREAD	0x02	/* post-read synchronization */
#define BUS_DMASYNC_PREWRITE	0x04	/* pre-write synchronization */
#define BUS_DMASYNC_POSTWRITE	0x08	/* post-write synchronization */

/*
 * XXX
 * ahd_dmamap_sync is only used on buffers allocated with
 * the pci_alloc_consistent() API.  Although I'm not sure how
 * this works on architectures with a write buffer, Linux does
 * not have an API to sync "coherent" memory.  Perhaps we need
 * to do an mb()?
 */
#define ahd_dmamap_sync(ahd, dma_tag, dmamap, offset, len, op)

/************************** Timer DataStructures ******************************/
typedef struct timer_list ahd_timer_t;

/********************************** Includes **********************************/
#ifdef CONFIG_AIC79XX_REG_PRETTY_PRINT
#define AIC_DEBUG_REGISTERS 1
#else
#define AIC_DEBUG_REGISTERS 0
#endif
#include "aic79xx.h"

/***************************** Timer Facilities *******************************/
#define ahd_timer_init init_timer
#define ahd_timer_stop del_timer_sync

/***************************** SMP support ************************************/
#include <linux/spinlock.h>

#define AIC79XX_DRIVER_VERSION "3.0"

/*************************** Device Data Structures ***************************/
/*
 * A per probed device structure used to deal with some error recovery
 * scenarios that the Linux mid-layer code just doesn't know how to
 * handle.  The structure allocated for a device only becomes persistent
 * after a successfully completed inquiry command to the target when
 * that inquiry data indicates a lun is present.
 */

typedef enum {
	AHD_DEV_FREEZE_TIL_EMPTY = 0x02, /* Freeze queue until active == 0 */
	AHD_DEV_Q_BASIC		 = 0x10, /* Allow basic device queuing */
	AHD_DEV_Q_TAGGED	 = 0x20, /* Allow full SCSI2 command queueing */
	AHD_DEV_PERIODIC_OTAG	 = 0x40, /* Send OTAG to prevent starvation */
} ahd_linux_dev_flags;

struct ahd_linux_device {
	TAILQ_ENTRY(ahd_linux_device) links;

	/*
	 * The number of transactions currently
	 * queued to the device.
	 */
	int			active;

	/*
	 * The currently allowed number of 
	 * transactions that can be queued to
	 * the device.  Must be signed for
	 * conversion from tagged to untagged
	 * mode where the device may have more
	 * than one outstanding active transaction.
	 */
	int			openings;

	/*
	 * A positive count indicates that this
	 * device's queue is halted.
	 */
	u_int			qfrozen;
	
	/*
	 * Cumulative command counter.
	 */
	u_long			commands_issued;

	/*
	 * The number of tagged transactions when
	 * running at our current opening level
	 * that have been successfully received by
	 * this device since the last QUEUE FULL.
	 */
	u_int			tag_success_count;
#define AHD_TAG_SUCCESS_INTERVAL 50

	ahd_linux_dev_flags	flags;

	/*
	 * Per device timer.
	 */
	struct timer_list	timer;

	/*
	 * The high limit for the tags variable.
	 */
	u_int			maxtags;

	/*
	 * The computed number of tags outstanding
	 * at the time of the last QUEUE FULL event.
	 */
	u_int			tags_on_last_queuefull;

	/*
	 * How many times we have seen a queue full
	 * with the same number of tags.  This is used
	 * to stop our adaptive queue depth algorithm
	 * on devices with a fixed number of tags.
	 */
	u_int			last_queuefull_same_count;
#define AHD_LOCK_TAGS_COUNT 50

	/*
	 * How many transactions have been queued
	 * without the device going idle.  We use
	 * this statistic to determine when to issue
	 * an ordered tag to prevent transaction
	 * starvation.  This statistic is only updated
	 * if the AHD_DEV_PERIODIC_OTAG flag is set
	 * on this device.
	 */
	u_int			commands_since_idle_or_otag;
#define AHD_OTAG_THRESH	500
};

/********************* Definitions Required by the Core ***********************/
/*
 * Number of SG segments we require.  So long as the S/G segments for
 * a particular transaction are allocated in a physically contiguous
 * manner and are allocated below 4GB, the number of S/G segments is
 * unrestricted.
 */
#define	AHD_NSEG 128

/*
 * Per-SCB OSM storage.
 */
struct scb_platform_data {
	struct ahd_linux_device	*dev;
	dma_addr_t		 buf_busaddr;
	uint32_t		 xfer_len;
	uint32_t		 sense_resid;	/* Auto-Sense residual */
};

/*
 * Define a structure used for each host adapter.  All members are
 * aligned on a boundary >= the size of the member to honor the
 * alignment restrictions of the various platforms supported by
 * this driver.
 */
struct ahd_platform_data {
	/*
	 * Fields accessed from interrupt context.
	 */
	struct scsi_target *starget[AHD_NUM_TARGETS]; 

	spinlock_t		 spin_lock;
	struct completion	*eh_done;
	struct Scsi_Host        *host;		/* pointer to scsi host */
#define AHD_LINUX_NOIRQ	((uint32_t)~0)
	uint32_t		 irq;		/* IRQ for this adapter */
	uint32_t		 bios_address;
	resource_size_t		 mem_busaddr;	/* Mem Base Addr */
};

void ahd_delay(long);

/***************************** Low Level I/O **********************************/
uint8_t ahd_inb(struct ahd_softc * ahd, long port);
void ahd_outb(struct ahd_softc * ahd, long port, uint8_t val);
void ahd_outw_atomic(struct ahd_softc * ahd,
				     long port, uint16_t val);
void ahd_outsb(struct ahd_softc * ahd, long port,
			       uint8_t *, int count);
void ahd_insb(struct ahd_softc * ahd, long port,
			       uint8_t *, int count);

/**************************** Initialization **********************************/
int		ahd_linux_register_host(struct ahd_softc *,
					struct scsi_host_template *);

/******************************** Locking *************************************/
static inline void
ahd_lockinit(struct ahd_softc *ahd)
{
	spin_lock_init(&ahd->platform_data->spin_lock);
}

static inline void
ahd_lock(struct ahd_softc *ahd, unsigned long *flags)
{
	spin_lock_irqsave(&ahd->platform_data->spin_lock, *flags);
}

static inline void
ahd_unlock(struct ahd_softc *ahd, unsigned long *flags)
{
	spin_unlock_irqrestore(&ahd->platform_data->spin_lock, *flags);
}

/******************************* PCI Definitions ******************************/
/*
 * PCIM_xxx: mask to locate subfield in register
 * PCIR_xxx: config register offset
 * PCIC_xxx: device class
 * PCIS_xxx: device subclass
 * PCIP_xxx: device programming interface
 * PCIV_xxx: PCI vendor ID (only required to fixup ancient devices)
 * PCID_xxx: device ID
 */
#define PCIR_DEVVENDOR		0x00
#define PCIR_VENDOR		0x00
#define PCIR_DEVICE		0x02
#define PCIR_COMMAND		0x04
#define PCIM_CMD_PORTEN		0x0001
#define PCIM_CMD_MEMEN		0x0002
#define PCIM_CMD_BUSMASTEREN	0x0004
#define PCIM_CMD_MWRICEN	0x0010
#define PCIM_CMD_PERRESPEN	0x0040
#define	PCIM_CMD_SERRESPEN	0x0100
#define PCIR_STATUS		0x06
#define PCIR_REVID		0x08
#define PCIR_PROGIF		0x09
#define PCIR_SUBCLASS		0x0a
#define PCIR_CLASS		0x0b
#define PCIR_CACHELNSZ		0x0c
#define PCIR_LATTIMER		0x0d
#define PCIR_HEADERTYPE		0x0e
#define PCIM_MFDEV		0x80
#define PCIR_BIST		0x0f
#define PCIR_CAP_PTR		0x34

/* config registers for header type 0 devices */
#define PCIR_MAPS	0x10
#define PCIR_SUBVEND_0	0x2c
#define PCIR_SUBDEV_0	0x2e

/****************************** PCI-X definitions *****************************/
#define PCIXR_COMMAND	0x96
#define PCIXR_DEVADDR	0x98
#define PCIXM_DEVADDR_FNUM	0x0003	/* Function Number */
#define PCIXM_DEVADDR_DNUM	0x00F8	/* Device Number */
#define PCIXM_DEVADDR_BNUM	0xFF00	/* Bus Number */
#define PCIXR_STATUS	0x9A
#define PCIXM_STATUS_64BIT	0x0001	/* Active 64bit connection to device. */
#define PCIXM_STATUS_133CAP	0x0002	/* Device is 133MHz capable */
#define PCIXM_STATUS_SCDISC	0x0004	/* Split Completion Discarded */
#define PCIXM_STATUS_UNEXPSC	0x0008	/* Unexpected Split Completion */
#define PCIXM_STATUS_CMPLEXDEV	0x0010	/* Device Complexity (set == bridge) */
#define PCIXM_STATUS_MAXMRDBC	0x0060	/* Maximum Burst Read Count */
#define PCIXM_STATUS_MAXSPLITS	0x0380	/* Maximum Split Transactions */
#define PCIXM_STATUS_MAXCRDS	0x1C00	/* Maximum Cumulative Read Size */
#define PCIXM_STATUS_RCVDSCEM	0x2000	/* Received a Split Comp w/Error msg */

typedef enum
{
	AHD_POWER_STATE_D0,
	AHD_POWER_STATE_D1,
	AHD_POWER_STATE_D2,
	AHD_POWER_STATE_D3
} ahd_power_state;

void ahd_power_state_change(struct ahd_softc *ahd,
			    ahd_power_state new_state);

/******************************* PCI Routines *********************************/
int			 ahd_linux_pci_init(void);
void			 ahd_linux_pci_exit(void);
int			 ahd_pci_map_registers(struct ahd_softc *ahd);
int			 ahd_pci_map_int(struct ahd_softc *ahd);

uint32_t		 ahd_pci_read_config(ahd_dev_softc_t pci,
					     int reg, int width);
void			 ahd_pci_write_config(ahd_dev_softc_t pci,
					  int reg, uint32_t value,
					  int width);

static inline int ahd_get_pci_function(ahd_dev_softc_t);
static inline int
ahd_get_pci_function(ahd_dev_softc_t pci)
{
	return (PCI_FUNC(pci->devfn));
}

static inline int ahd_get_pci_slot(ahd_dev_softc_t);
static inline int
ahd_get_pci_slot(ahd_dev_softc_t pci)
{
	return (PCI_SLOT(pci->devfn));
}

static inline int ahd_get_pci_bus(ahd_dev_softc_t);
static inline int
ahd_get_pci_bus(ahd_dev_softc_t pci)
{
	return (pci->bus->number);
}

static inline void ahd_flush_device_writes(struct ahd_softc *);
static inline void
ahd_flush_device_writes(struct ahd_softc *ahd)
{
	/* XXX Is this sufficient for all architectures??? */
	ahd_inb(ahd, INTSTAT);
}

/**************************** Proc FS Support *********************************/
int	ahd_proc_write_seeprom(struct Scsi_Host *, char *, int);
int	ahd_linux_show_info(struct seq_file *,struct Scsi_Host *);

/*********************** Transaction Access Wrappers **************************/
static inline void ahd_cmd_set_transaction_status(struct scsi_cmnd *, uint32_t);
static inline void ahd_set_transaction_status(struct scb *, uint32_t);
static inline void ahd_cmd_set_scsi_status(struct scsi_cmnd *, uint32_t);
static inline void ahd_set_scsi_status(struct scb *, uint32_t);
static inline uint32_t ahd_cmd_get_transaction_status(struct scsi_cmnd *cmd);
static inline uint32_t ahd_get_transaction_status(struct scb *);
static inline uint32_t ahd_cmd_get_scsi_status(struct scsi_cmnd *cmd);
static inline uint32_t ahd_get_scsi_status(struct scb *);
static inline void ahd_set_transaction_tag(struct scb *, int, u_int);
static inline u_long ahd_get_transfer_length(struct scb *);
static inline int ahd_get_transfer_dir(struct scb *);
static inline void ahd_set_residual(struct scb *, u_long);
static inline void ahd_set_sense_residual(struct scb *scb, u_long resid);
static inline u_long ahd_get_residual(struct scb *);
static inline u_long ahd_get_sense_residual(struct scb *);
static inline int ahd_perform_autosense(struct scb *);
static inline uint32_t ahd_get_sense_bufsize(struct ahd_softc *,
					       struct scb *);
static inline void ahd_notify_xfer_settings_change(struct ahd_softc *,
						     struct ahd_devinfo *);
static inline void ahd_platform_scb_free(struct ahd_softc *ahd,
					   struct scb *scb);
static inline void ahd_freeze_scb(struct scb *scb);

static inline
void ahd_cmd_set_transaction_status(struct scsi_cmnd *cmd, uint32_t status)
{
	cmd->result &= ~(CAM_STATUS_MASK << 16);
	cmd->result |= status << 16;
}

static inline
void ahd_set_transaction_status(struct scb *scb, uint32_t status)
{
	ahd_cmd_set_transaction_status(scb->io_ctx,status);
}

static inline
void ahd_cmd_set_scsi_status(struct scsi_cmnd *cmd, uint32_t status)
{
	cmd->result &= ~0xFFFF;
	cmd->result |= status;
}

static inline
void ahd_set_scsi_status(struct scb *scb, uint32_t status)
{
	ahd_cmd_set_scsi_status(scb->io_ctx, status);
}

static inline
uint32_t ahd_cmd_get_transaction_status(struct scsi_cmnd *cmd)
{
	return ((cmd->result >> 16) & CAM_STATUS_MASK);
}

static inline
uint32_t ahd_get_transaction_status(struct scb *scb)
{
	return (ahd_cmd_get_transaction_status(scb->io_ctx));
}

static inline
uint32_t ahd_cmd_get_scsi_status(struct scsi_cmnd *cmd)
{
	return (cmd->result & 0xFFFF);
}

static inline
uint32_t ahd_get_scsi_status(struct scb *scb)
{
	return (ahd_cmd_get_scsi_status(scb->io_ctx));
}

static inline
void ahd_set_transaction_tag(struct scb *scb, int enabled, u_int type)
{
	/*
	 * Nothing to do for linux as the incoming transaction
	 * has no concept of tag/non tagged, etc.
	 */
}

static inline
u_long ahd_get_transfer_length(struct scb *scb)
{
	return (scb->platform_data->xfer_len);
}

static inline
int ahd_get_transfer_dir(struct scb *scb)
{
	return (scb->io_ctx->sc_data_direction);
}

static inline
void ahd_set_residual(struct scb *scb, u_long resid)
{
	scsi_set_resid(scb->io_ctx, resid);
}

static inline
void ahd_set_sense_residual(struct scb *scb, u_long resid)
{
	scb->platform_data->sense_resid = resid;
}

static inline
u_long ahd_get_residual(struct scb *scb)
{
	return scsi_get_resid(scb->io_ctx);
}

static inline
u_long ahd_get_sense_residual(struct scb *scb)
{
	return (scb->platform_data->sense_resid);
}

static inline
int ahd_perform_autosense(struct scb *scb)
{
	/*
	 * We always perform autosense in Linux.
	 * On other platforms this is set on a
	 * per-transaction basis.
	 */
	return (1);
}

static inline uint32_t
ahd_get_sense_bufsize(struct ahd_softc *ahd, struct scb *scb)
{
	return (sizeof(struct scsi_sense_data));
}

static inline void
ahd_notify_xfer_settings_change(struct ahd_softc *ahd,
				struct ahd_devinfo *devinfo)
{
	/* Nothing to do here for linux */
}

static inline void
ahd_platform_scb_free(struct ahd_softc *ahd, struct scb *scb)
{
	ahd->flags &= ~AHD_RESOURCE_SHORTAGE;
}

int	ahd_platform_alloc(struct ahd_softc *ahd, void *platform_arg);
void	ahd_platform_free(struct ahd_softc *ahd);
void	ahd_platform_init(struct ahd_softc *ahd);
void	ahd_platform_freeze_devq(struct ahd_softc *ahd, struct scb *scb);

static inline void
ahd_freeze_scb(struct scb *scb)
{
	if ((scb->io_ctx->result & (CAM_DEV_QFRZN << 16)) == 0) {
                scb->io_ctx->result |= CAM_DEV_QFRZN << 16;
                scb->platform_data->dev->qfrozen++;
        }
}

void	ahd_platform_set_tags(struct ahd_softc *ahd, struct scsi_device *sdev,
			      struct ahd_devinfo *devinfo, ahd_queue_alg);
int	ahd_platform_abort_scbs(struct ahd_softc *ahd, int target,
				char channel, int lun, u_int tag,
				role_t role, uint32_t status);
irqreturn_t
	ahd_linux_isr(int irq, void *dev_id);
void	ahd_done(struct ahd_softc*, struct scb*);
void	ahd_send_async(struct ahd_softc *, char channel,
		       u_int target, u_int lun, ac_code);
void	ahd_print_path(struct ahd_softc *, struct scb *);

#ifdef CONFIG_PCI
#define AHD_PCI_CONFIG 1
#else
#define AHD_PCI_CONFIG 0
#endif
#define bootverbose aic79xx_verbose
extern uint32_t aic79xx_verbose;

#endif /* _AIC79XX_LINUX_H_ */