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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 *******************************/
110struct ahc_softc;
111typedef struct pci_dev *ahc_dev_softc_t;
112typedef 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 *********************************/
130extern u_int aic7xxx_no_probe;
131extern u_int aic7xxx_allow_memio;
132extern struct scsi_host_template aic7xxx_driver_template;
133
134/***************************** Bus Space/DMA **********************************/
135
136typedef uint32_t bus_size_t;
137
138typedef enum {
139 BUS_SPACE_MEMIO,
140 BUS_SPACE_PIO
141} bus_space_tag_t;
142
143typedef union {
144 u_long ioport;
145 volatile uint8_t __iomem *maddr;
146} bus_space_handle_t;
147
148typedef struct bus_dma_segment
149{
150 dma_addr_t ds_addr;
151 bus_size_t ds_len;
152} bus_dma_segment_t;
153
154struct ahc_linux_dma_tag
155{
156 bus_size_t alignment;
157 bus_size_t boundary;
158 bus_size_t maxsize;
159};
160typedef struct ahc_linux_dma_tag* bus_dma_tag_t;
161
162typedef dma_addr_t bus_dmamap_t;
163
164typedef int bus_dma_filter_t(void*, dma_addr_t);
165typedef 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
179int 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
187void ahc_dma_tag_destroy(struct ahc_softc *, bus_dma_tag_t /*tag*/);
188
189int ahc_dmamem_alloc(struct ahc_softc *, bus_dma_tag_t /*dmat*/,
190 void** /*vaddr*/, int /*flags*/,
191 bus_dmamap_t* /*mapp*/);
192
193void ahc_dmamem_free(struct ahc_softc *, bus_dma_tag_t /*dmat*/,
194 void* /*vaddr*/, bus_dmamap_t /*map*/);
195
196void ahc_dmamap_destroy(struct ahc_softc *, bus_dma_tag_t /*tag*/,
197 bus_dmamap_t /*map*/);
198
199int 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
204int 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 *******************************/
233static inline void
234ahc_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 */
251typedef 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
258struct 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 */
342struct 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 */
355struct 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 resource_size_t mem_busaddr; /* Mem Base Addr */
369};
370
371void ahc_delay(long);
372
373
374/***************************** Low Level I/O **********************************/
375uint8_t ahc_inb(struct ahc_softc * ahc, long port);
376void ahc_outb(struct ahc_softc * ahc, long port, uint8_t val);
377void ahc_outsb(struct ahc_softc * ahc, long port,
378 uint8_t *, int count);
379void ahc_insb(struct ahc_softc * ahc, long port,
380 uint8_t *, int count);
381
382/**************************** Initialization **********************************/
383int ahc_linux_register_host(struct ahc_softc *,
384 struct scsi_host_template *);
385
386/*************************** Pretty Printing **********************************/
387struct info_str {
388 char *buffer;
389 int length;
390 off_t offset;
391 int pos;
392};
393
394/******************************** Locking *************************************/
395/* Lock protecting internal data structures */
396
397static inline void
398ahc_lockinit(struct ahc_softc *ahc)
399{
400 spin_lock_init(&ahc->platform_data->spin_lock);
401}
402
403static inline void
404ahc_lock(struct ahc_softc *ahc, unsigned long *flags)
405{
406 spin_lock_irqsave(&ahc->platform_data->spin_lock, *flags);
407}
408
409static inline void
410ahc_unlock(struct ahc_softc *ahc, unsigned long *flags)
411{
412 spin_unlock_irqrestore(&ahc->platform_data->spin_lock, *flags);
413}
414
415/******************************* PCI Definitions ******************************/
416/*
417 * PCIM_xxx: mask to locate subfield in register
418 * PCIR_xxx: config register offset
419 * PCIC_xxx: device class
420 * PCIS_xxx: device subclass
421 * PCIP_xxx: device programming interface
422 * PCIV_xxx: PCI vendor ID (only required to fixup ancient devices)
423 * PCID_xxx: device ID
424 */
425#define PCIR_DEVVENDOR 0x00
426#define PCIR_VENDOR 0x00
427#define PCIR_DEVICE 0x02
428#define PCIR_COMMAND 0x04
429#define PCIM_CMD_PORTEN 0x0001
430#define PCIM_CMD_MEMEN 0x0002
431#define PCIM_CMD_BUSMASTEREN 0x0004
432#define PCIM_CMD_MWRICEN 0x0010
433#define PCIM_CMD_PERRESPEN 0x0040
434#define PCIM_CMD_SERRESPEN 0x0100
435#define PCIR_STATUS 0x06
436#define PCIR_REVID 0x08
437#define PCIR_PROGIF 0x09
438#define PCIR_SUBCLASS 0x0a
439#define PCIR_CLASS 0x0b
440#define PCIR_CACHELNSZ 0x0c
441#define PCIR_LATTIMER 0x0d
442#define PCIR_HEADERTYPE 0x0e
443#define PCIM_MFDEV 0x80
444#define PCIR_BIST 0x0f
445#define PCIR_CAP_PTR 0x34
446
447/* config registers for header type 0 devices */
448#define PCIR_MAPS 0x10
449#define PCIR_SUBVEND_0 0x2c
450#define PCIR_SUBDEV_0 0x2e
451
452typedef enum
453{
454 AHC_POWER_STATE_D0,
455 AHC_POWER_STATE_D1,
456 AHC_POWER_STATE_D2,
457 AHC_POWER_STATE_D3
458} ahc_power_state;
459
460/**************************** VL/EISA Routines ********************************/
461#ifdef CONFIG_EISA
462int ahc_linux_eisa_init(void);
463void ahc_linux_eisa_exit(void);
464int aic7770_map_registers(struct ahc_softc *ahc,
465 u_int port);
466int aic7770_map_int(struct ahc_softc *ahc, u_int irq);
467#else
468static inline int ahc_linux_eisa_init(void) {
469 return -ENODEV;
470}
471static inline void ahc_linux_eisa_exit(void) {
472}
473#endif
474
475/******************************* PCI Routines *********************************/
476#ifdef CONFIG_PCI
477int ahc_linux_pci_init(void);
478void ahc_linux_pci_exit(void);
479int ahc_pci_map_registers(struct ahc_softc *ahc);
480int ahc_pci_map_int(struct ahc_softc *ahc);
481
482uint32_t ahc_pci_read_config(ahc_dev_softc_t pci,
483 int reg, int width);
484
485void ahc_pci_write_config(ahc_dev_softc_t pci,
486 int reg, uint32_t value,
487 int width);
488
489static inline int ahc_get_pci_function(ahc_dev_softc_t);
490static inline int
491ahc_get_pci_function(ahc_dev_softc_t pci)
492{
493 return (PCI_FUNC(pci->devfn));
494}
495
496static inline int ahc_get_pci_slot(ahc_dev_softc_t);
497static inline int
498ahc_get_pci_slot(ahc_dev_softc_t pci)
499{
500 return (PCI_SLOT(pci->devfn));
501}
502
503static inline int ahc_get_pci_bus(ahc_dev_softc_t);
504static inline int
505ahc_get_pci_bus(ahc_dev_softc_t pci)
506{
507 return (pci->bus->number);
508}
509#else
510static inline int ahc_linux_pci_init(void) {
511 return 0;
512}
513static inline void ahc_linux_pci_exit(void) {
514}
515#endif
516
517static inline void ahc_flush_device_writes(struct ahc_softc *);
518static inline void
519ahc_flush_device_writes(struct ahc_softc *ahc)
520{
521 /* XXX Is this sufficient for all architectures??? */
522 ahc_inb(ahc, INTSTAT);
523}
524
525/**************************** Proc FS Support *********************************/
526int ahc_linux_proc_info(struct Scsi_Host *, char *, char **,
527 off_t, int, int);
528
529/*************************** Domain Validation ********************************/
530/*********************** Transaction Access Wrappers *************************/
531static inline void ahc_cmd_set_transaction_status(struct scsi_cmnd *, uint32_t);
532static inline void ahc_set_transaction_status(struct scb *, uint32_t);
533static inline void ahc_cmd_set_scsi_status(struct scsi_cmnd *, uint32_t);
534static inline void ahc_set_scsi_status(struct scb *, uint32_t);
535static inline uint32_t ahc_cmd_get_transaction_status(struct scsi_cmnd *cmd);
536static inline uint32_t ahc_get_transaction_status(struct scb *);
537static inline uint32_t ahc_cmd_get_scsi_status(struct scsi_cmnd *cmd);
538static inline uint32_t ahc_get_scsi_status(struct scb *);
539static inline void ahc_set_transaction_tag(struct scb *, int, u_int);
540static inline u_long ahc_get_transfer_length(struct scb *);
541static inline int ahc_get_transfer_dir(struct scb *);
542static inline void ahc_set_residual(struct scb *, u_long);
543static inline void ahc_set_sense_residual(struct scb *scb, u_long resid);
544static inline u_long ahc_get_residual(struct scb *);
545static inline u_long ahc_get_sense_residual(struct scb *);
546static inline int ahc_perform_autosense(struct scb *);
547static inline uint32_t ahc_get_sense_bufsize(struct ahc_softc *,
548 struct scb *);
549static inline void ahc_notify_xfer_settings_change(struct ahc_softc *,
550 struct ahc_devinfo *);
551static inline void ahc_platform_scb_free(struct ahc_softc *ahc,
552 struct scb *scb);
553static inline void ahc_freeze_scb(struct scb *scb);
554
555static inline
556void ahc_cmd_set_transaction_status(struct scsi_cmnd *cmd, uint32_t status)
557{
558 cmd->result &= ~(CAM_STATUS_MASK << 16);
559 cmd->result |= status << 16;
560}
561
562static inline
563void ahc_set_transaction_status(struct scb *scb, uint32_t status)
564{
565 ahc_cmd_set_transaction_status(scb->io_ctx,status);
566}
567
568static inline
569void ahc_cmd_set_scsi_status(struct scsi_cmnd *cmd, uint32_t status)
570{
571 cmd->result &= ~0xFFFF;
572 cmd->result |= status;
573}
574
575static inline
576void ahc_set_scsi_status(struct scb *scb, uint32_t status)
577{
578 ahc_cmd_set_scsi_status(scb->io_ctx, status);
579}
580
581static inline
582uint32_t ahc_cmd_get_transaction_status(struct scsi_cmnd *cmd)
583{
584 return ((cmd->result >> 16) & CAM_STATUS_MASK);
585}
586
587static inline
588uint32_t ahc_get_transaction_status(struct scb *scb)
589{
590 return (ahc_cmd_get_transaction_status(scb->io_ctx));
591}
592
593static inline
594uint32_t ahc_cmd_get_scsi_status(struct scsi_cmnd *cmd)
595{
596 return (cmd->result & 0xFFFF);
597}
598
599static inline
600uint32_t ahc_get_scsi_status(struct scb *scb)
601{
602 return (ahc_cmd_get_scsi_status(scb->io_ctx));
603}
604
605static inline
606void ahc_set_transaction_tag(struct scb *scb, int enabled, u_int type)
607{
608 /*
609 * Nothing to do for linux as the incoming transaction
610 * has no concept of tag/non tagged, etc.
611 */
612}
613
614static inline
615u_long ahc_get_transfer_length(struct scb *scb)
616{
617 return (scb->platform_data->xfer_len);
618}
619
620static inline
621int ahc_get_transfer_dir(struct scb *scb)
622{
623 return (scb->io_ctx->sc_data_direction);
624}
625
626static inline
627void ahc_set_residual(struct scb *scb, u_long resid)
628{
629 scsi_set_resid(scb->io_ctx, resid);
630}
631
632static inline
633void ahc_set_sense_residual(struct scb *scb, u_long resid)
634{
635 scb->platform_data->sense_resid = resid;
636}
637
638static inline
639u_long ahc_get_residual(struct scb *scb)
640{
641 return scsi_get_resid(scb->io_ctx);
642}
643
644static inline
645u_long ahc_get_sense_residual(struct scb *scb)
646{
647 return (scb->platform_data->sense_resid);
648}
649
650static inline
651int ahc_perform_autosense(struct scb *scb)
652{
653 /*
654 * We always perform autosense in Linux.
655 * On other platforms this is set on a
656 * per-transaction basis.
657 */
658 return (1);
659}
660
661static inline uint32_t
662ahc_get_sense_bufsize(struct ahc_softc *ahc, struct scb *scb)
663{
664 return (sizeof(struct scsi_sense_data));
665}
666
667static inline void
668ahc_notify_xfer_settings_change(struct ahc_softc *ahc,
669 struct ahc_devinfo *devinfo)
670{
671 /* Nothing to do here for linux */
672}
673
674static inline void
675ahc_platform_scb_free(struct ahc_softc *ahc, struct scb *scb)
676{
677}
678
679int ahc_platform_alloc(struct ahc_softc *ahc, void *platform_arg);
680void ahc_platform_free(struct ahc_softc *ahc);
681void ahc_platform_freeze_devq(struct ahc_softc *ahc, struct scb *scb);
682
683static inline void
684ahc_freeze_scb(struct scb *scb)
685{
686 if ((scb->io_ctx->result & (CAM_DEV_QFRZN << 16)) == 0) {
687 scb->io_ctx->result |= CAM_DEV_QFRZN << 16;
688 scb->platform_data->dev->qfrozen++;
689 }
690}
691
692void ahc_platform_set_tags(struct ahc_softc *ahc, struct scsi_device *sdev,
693 struct ahc_devinfo *devinfo, ahc_queue_alg);
694int ahc_platform_abort_scbs(struct ahc_softc *ahc, int target,
695 char channel, int lun, u_int tag,
696 role_t role, uint32_t status);
697irqreturn_t
698 ahc_linux_isr(int irq, void *dev_id);
699void ahc_platform_flushwork(struct ahc_softc *ahc);
700void ahc_done(struct ahc_softc*, struct scb*);
701void ahc_send_async(struct ahc_softc *, char channel,
702 u_int target, u_int lun, ac_code);
703void ahc_print_path(struct ahc_softc *, struct scb *);
704void ahc_platform_dump_card_state(struct ahc_softc *ahc);
705
706#ifdef CONFIG_PCI
707#define AHC_PCI_CONFIG 1
708#else
709#define AHC_PCI_CONFIG 0
710#endif
711#define bootverbose aic7xxx_verbose
712extern u_int aic7xxx_verbose;
713#endif /* _AIC7XXX_LINUX_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#include "cam.h"
86#include "queue.h"
87#include "scsi_message.h"
88#include "aiclib.h"
89
90/*********************************** Debugging ********************************/
91#ifdef CONFIG_AIC7XXX_DEBUG_ENABLE
92#ifdef CONFIG_AIC7XXX_DEBUG_MASK
93#define AHC_DEBUG 1
94#define AHC_DEBUG_OPTS CONFIG_AIC7XXX_DEBUG_MASK
95#else
96/*
97 * Compile in debugging code, but do not enable any printfs.
98 */
99#define AHC_DEBUG 1
100#endif
101/* No debugging code. */
102#endif
103
104/************************* Forward Declarations *******************************/
105struct ahc_softc;
106typedef struct pci_dev *ahc_dev_softc_t;
107typedef struct scsi_cmnd *ahc_io_ctx_t;
108
109/******************************* Byte Order ***********************************/
110#define ahc_htobe16(x) cpu_to_be16(x)
111#define ahc_htobe32(x) cpu_to_be32(x)
112#define ahc_htobe64(x) cpu_to_be64(x)
113#define ahc_htole16(x) cpu_to_le16(x)
114#define ahc_htole32(x) cpu_to_le32(x)
115#define ahc_htole64(x) cpu_to_le64(x)
116
117#define ahc_be16toh(x) be16_to_cpu(x)
118#define ahc_be32toh(x) be32_to_cpu(x)
119#define ahc_be64toh(x) be64_to_cpu(x)
120#define ahc_le16toh(x) le16_to_cpu(x)
121#define ahc_le32toh(x) le32_to_cpu(x)
122#define ahc_le64toh(x) le64_to_cpu(x)
123
124/************************* Configuration Data *********************************/
125extern u_int aic7xxx_no_probe;
126extern u_int aic7xxx_allow_memio;
127extern struct scsi_host_template aic7xxx_driver_template;
128
129/***************************** Bus Space/DMA **********************************/
130
131typedef uint32_t bus_size_t;
132
133typedef enum {
134 BUS_SPACE_MEMIO,
135 BUS_SPACE_PIO
136} bus_space_tag_t;
137
138typedef union {
139 u_long ioport;
140 volatile uint8_t __iomem *maddr;
141} bus_space_handle_t;
142
143typedef struct bus_dma_segment
144{
145 dma_addr_t ds_addr;
146 bus_size_t ds_len;
147} bus_dma_segment_t;
148
149struct ahc_linux_dma_tag
150{
151 bus_size_t alignment;
152 bus_size_t boundary;
153 bus_size_t maxsize;
154};
155typedef struct ahc_linux_dma_tag* bus_dma_tag_t;
156
157typedef dma_addr_t bus_dmamap_t;
158
159typedef int bus_dma_filter_t(void*, dma_addr_t);
160typedef void bus_dmamap_callback_t(void *, bus_dma_segment_t *, int, int);
161
162#define BUS_DMA_WAITOK 0x0
163#define BUS_DMA_NOWAIT 0x1
164#define BUS_DMA_ALLOCNOW 0x2
165#define BUS_DMA_LOAD_SEGS 0x4 /*
166 * Argument is an S/G list not
167 * a single buffer.
168 */
169
170#define BUS_SPACE_MAXADDR 0xFFFFFFFF
171#define BUS_SPACE_MAXADDR_32BIT 0xFFFFFFFF
172#define BUS_SPACE_MAXSIZE_32BIT 0xFFFFFFFF
173
174int ahc_dma_tag_create(struct ahc_softc *, bus_dma_tag_t /*parent*/,
175 bus_size_t /*alignment*/, bus_size_t /*boundary*/,
176 dma_addr_t /*lowaddr*/, dma_addr_t /*highaddr*/,
177 bus_dma_filter_t*/*filter*/, void */*filterarg*/,
178 bus_size_t /*maxsize*/, int /*nsegments*/,
179 bus_size_t /*maxsegsz*/, int /*flags*/,
180 bus_dma_tag_t */*dma_tagp*/);
181
182void ahc_dma_tag_destroy(struct ahc_softc *, bus_dma_tag_t /*tag*/);
183
184int ahc_dmamem_alloc(struct ahc_softc *, bus_dma_tag_t /*dmat*/,
185 void** /*vaddr*/, int /*flags*/,
186 bus_dmamap_t* /*mapp*/);
187
188void ahc_dmamem_free(struct ahc_softc *, bus_dma_tag_t /*dmat*/,
189 void* /*vaddr*/, bus_dmamap_t /*map*/);
190
191void ahc_dmamap_destroy(struct ahc_softc *, bus_dma_tag_t /*tag*/,
192 bus_dmamap_t /*map*/);
193
194int ahc_dmamap_load(struct ahc_softc *ahc, bus_dma_tag_t /*dmat*/,
195 bus_dmamap_t /*map*/, void * /*buf*/,
196 bus_size_t /*buflen*/, bus_dmamap_callback_t *,
197 void */*callback_arg*/, int /*flags*/);
198
199int ahc_dmamap_unload(struct ahc_softc *, bus_dma_tag_t, bus_dmamap_t);
200
201/*
202 * Operations performed by ahc_dmamap_sync().
203 */
204#define BUS_DMASYNC_PREREAD 0x01 /* pre-read synchronization */
205#define BUS_DMASYNC_POSTREAD 0x02 /* post-read synchronization */
206#define BUS_DMASYNC_PREWRITE 0x04 /* pre-write synchronization */
207#define BUS_DMASYNC_POSTWRITE 0x08 /* post-write synchronization */
208
209/*
210 * XXX
211 * ahc_dmamap_sync is only used on buffers allocated with
212 * the pci_alloc_consistent() API. Although I'm not sure how
213 * this works on architectures with a write buffer, Linux does
214 * not have an API to sync "coherent" memory. Perhaps we need
215 * to do an mb()?
216 */
217#define ahc_dmamap_sync(ahc, dma_tag, dmamap, offset, len, op)
218
219/********************************** Includes **********************************/
220#ifdef CONFIG_AIC7XXX_REG_PRETTY_PRINT
221#define AIC_DEBUG_REGISTERS 1
222#else
223#define AIC_DEBUG_REGISTERS 0
224#endif
225#include "aic7xxx.h"
226
227/***************************** Timer Facilities *******************************/
228static inline void
229ahc_scb_timer_reset(struct scb *scb, u_int usec)
230{
231}
232
233/***************************** SMP support ************************************/
234#include <linux/spinlock.h>
235
236#define AIC7XXX_DRIVER_VERSION "7.0"
237
238/*************************** Device Data Structures ***************************/
239/*
240 * A per probed device structure used to deal with some error recovery
241 * scenarios that the Linux mid-layer code just doesn't know how to
242 * handle. The structure allocated for a device only becomes persistent
243 * after a successfully completed inquiry command to the target when
244 * that inquiry data indicates a lun is present.
245 */
246typedef enum {
247 AHC_DEV_FREEZE_TIL_EMPTY = 0x02, /* Freeze queue until active == 0 */
248 AHC_DEV_Q_BASIC = 0x10, /* Allow basic device queuing */
249 AHC_DEV_Q_TAGGED = 0x20, /* Allow full SCSI2 command queueing */
250 AHC_DEV_PERIODIC_OTAG = 0x40, /* Send OTAG to prevent starvation */
251} ahc_linux_dev_flags;
252
253struct ahc_linux_device {
254 /*
255 * The number of transactions currently
256 * queued to the device.
257 */
258 int active;
259
260 /*
261 * The currently allowed number of
262 * transactions that can be queued to
263 * the device. Must be signed for
264 * conversion from tagged to untagged
265 * mode where the device may have more
266 * than one outstanding active transaction.
267 */
268 int openings;
269
270 /*
271 * A positive count indicates that this
272 * device's queue is halted.
273 */
274 u_int qfrozen;
275
276 /*
277 * Cumulative command counter.
278 */
279 u_long commands_issued;
280
281 /*
282 * The number of tagged transactions when
283 * running at our current opening level
284 * that have been successfully received by
285 * this device since the last QUEUE FULL.
286 */
287 u_int tag_success_count;
288#define AHC_TAG_SUCCESS_INTERVAL 50
289
290 ahc_linux_dev_flags flags;
291
292 /*
293 * The high limit for the tags variable.
294 */
295 u_int maxtags;
296
297 /*
298 * The computed number of tags outstanding
299 * at the time of the last QUEUE FULL event.
300 */
301 u_int tags_on_last_queuefull;
302
303 /*
304 * How many times we have seen a queue full
305 * with the same number of tags. This is used
306 * to stop our adaptive queue depth algorithm
307 * on devices with a fixed number of tags.
308 */
309 u_int last_queuefull_same_count;
310#define AHC_LOCK_TAGS_COUNT 50
311
312 /*
313 * How many transactions have been queued
314 * without the device going idle. We use
315 * this statistic to determine when to issue
316 * an ordered tag to prevent transaction
317 * starvation. This statistic is only updated
318 * if the AHC_DEV_PERIODIC_OTAG flag is set
319 * on this device.
320 */
321 u_int commands_since_idle_or_otag;
322#define AHC_OTAG_THRESH 500
323};
324
325/********************* Definitions Required by the Core ***********************/
326/*
327 * Number of SG segments we require. So long as the S/G segments for
328 * a particular transaction are allocated in a physically contiguous
329 * manner and are allocated below 4GB, the number of S/G segments is
330 * unrestricted.
331 */
332#define AHC_NSEG 128
333
334/*
335 * Per-SCB OSM storage.
336 */
337struct scb_platform_data {
338 struct ahc_linux_device *dev;
339 dma_addr_t buf_busaddr;
340 uint32_t xfer_len;
341 uint32_t sense_resid; /* Auto-Sense residual */
342};
343
344/*
345 * Define a structure used for each host adapter. All members are
346 * aligned on a boundary >= the size of the member to honor the
347 * alignment restrictions of the various platforms supported by
348 * this driver.
349 */
350struct ahc_platform_data {
351 /*
352 * Fields accessed from interrupt context.
353 */
354 struct scsi_target *starget[AHC_NUM_TARGETS];
355
356 spinlock_t spin_lock;
357 u_int qfrozen;
358 struct completion *eh_done;
359 struct Scsi_Host *host; /* pointer to scsi host */
360#define AHC_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
366void ahc_delay(long);
367
368
369/***************************** Low Level I/O **********************************/
370uint8_t ahc_inb(struct ahc_softc * ahc, long port);
371void ahc_outb(struct ahc_softc * ahc, long port, uint8_t val);
372void ahc_outsb(struct ahc_softc * ahc, long port,
373 uint8_t *, int count);
374void ahc_insb(struct ahc_softc * ahc, long port,
375 uint8_t *, int count);
376
377/**************************** Initialization **********************************/
378int ahc_linux_register_host(struct ahc_softc *,
379 struct scsi_host_template *);
380
381/******************************** Locking *************************************/
382/* Lock protecting internal data structures */
383
384static inline void
385ahc_lockinit(struct ahc_softc *ahc)
386{
387 spin_lock_init(&ahc->platform_data->spin_lock);
388}
389
390static inline void
391ahc_lock(struct ahc_softc *ahc, unsigned long *flags)
392{
393 spin_lock_irqsave(&ahc->platform_data->spin_lock, *flags);
394}
395
396static inline void
397ahc_unlock(struct ahc_softc *ahc, unsigned long *flags)
398{
399 spin_unlock_irqrestore(&ahc->platform_data->spin_lock, *flags);
400}
401
402/******************************* PCI Definitions ******************************/
403/*
404 * PCIM_xxx: mask to locate subfield in register
405 * PCIR_xxx: config register offset
406 * PCIC_xxx: device class
407 * PCIS_xxx: device subclass
408 * PCIP_xxx: device programming interface
409 * PCIV_xxx: PCI vendor ID (only required to fixup ancient devices)
410 * PCID_xxx: device ID
411 */
412#define PCIR_DEVVENDOR 0x00
413#define PCIR_VENDOR 0x00
414#define PCIR_DEVICE 0x02
415#define PCIR_COMMAND 0x04
416#define PCIM_CMD_PORTEN 0x0001
417#define PCIM_CMD_MEMEN 0x0002
418#define PCIM_CMD_BUSMASTEREN 0x0004
419#define PCIM_CMD_MWRICEN 0x0010
420#define PCIM_CMD_PERRESPEN 0x0040
421#define PCIM_CMD_SERRESPEN 0x0100
422#define PCIR_STATUS 0x06
423#define PCIR_REVID 0x08
424#define PCIR_PROGIF 0x09
425#define PCIR_SUBCLASS 0x0a
426#define PCIR_CLASS 0x0b
427#define PCIR_CACHELNSZ 0x0c
428#define PCIR_LATTIMER 0x0d
429#define PCIR_HEADERTYPE 0x0e
430#define PCIM_MFDEV 0x80
431#define PCIR_BIST 0x0f
432#define PCIR_CAP_PTR 0x34
433
434/* config registers for header type 0 devices */
435#define PCIR_MAPS 0x10
436#define PCIR_SUBVEND_0 0x2c
437#define PCIR_SUBDEV_0 0x2e
438
439typedef enum
440{
441 AHC_POWER_STATE_D0,
442 AHC_POWER_STATE_D1,
443 AHC_POWER_STATE_D2,
444 AHC_POWER_STATE_D3
445} ahc_power_state;
446
447/**************************** VL/EISA Routines ********************************/
448#ifdef CONFIG_EISA
449int ahc_linux_eisa_init(void);
450void ahc_linux_eisa_exit(void);
451int aic7770_map_registers(struct ahc_softc *ahc,
452 u_int port);
453int aic7770_map_int(struct ahc_softc *ahc, u_int irq);
454#else
455static inline int ahc_linux_eisa_init(void) {
456 return -ENODEV;
457}
458static inline void ahc_linux_eisa_exit(void) {
459}
460#endif
461
462/******************************* PCI Routines *********************************/
463#ifdef CONFIG_PCI
464int ahc_linux_pci_init(void);
465void ahc_linux_pci_exit(void);
466int ahc_pci_map_registers(struct ahc_softc *ahc);
467int ahc_pci_map_int(struct ahc_softc *ahc);
468
469uint32_t ahc_pci_read_config(ahc_dev_softc_t pci,
470 int reg, int width);
471
472void ahc_pci_write_config(ahc_dev_softc_t pci,
473 int reg, uint32_t value,
474 int width);
475
476static inline int ahc_get_pci_function(ahc_dev_softc_t);
477static inline int
478ahc_get_pci_function(ahc_dev_softc_t pci)
479{
480 return (PCI_FUNC(pci->devfn));
481}
482
483static inline int ahc_get_pci_slot(ahc_dev_softc_t);
484static inline int
485ahc_get_pci_slot(ahc_dev_softc_t pci)
486{
487 return (PCI_SLOT(pci->devfn));
488}
489
490static inline int ahc_get_pci_bus(ahc_dev_softc_t);
491static inline int
492ahc_get_pci_bus(ahc_dev_softc_t pci)
493{
494 return (pci->bus->number);
495}
496#else
497static inline int ahc_linux_pci_init(void) {
498 return 0;
499}
500static inline void ahc_linux_pci_exit(void) {
501}
502#endif
503
504static inline void ahc_flush_device_writes(struct ahc_softc *);
505static inline void
506ahc_flush_device_writes(struct ahc_softc *ahc)
507{
508 /* XXX Is this sufficient for all architectures??? */
509 ahc_inb(ahc, INTSTAT);
510}
511
512/**************************** Proc FS Support *********************************/
513int ahc_proc_write_seeprom(struct Scsi_Host *, char *, int);
514int ahc_linux_show_info(struct seq_file *, struct Scsi_Host *);
515
516/*************************** Domain Validation ********************************/
517/*********************** Transaction Access Wrappers *************************/
518static inline void ahc_cmd_set_transaction_status(struct scsi_cmnd *, uint32_t);
519static inline void ahc_set_transaction_status(struct scb *, uint32_t);
520static inline void ahc_cmd_set_scsi_status(struct scsi_cmnd *, uint32_t);
521static inline void ahc_set_scsi_status(struct scb *, uint32_t);
522static inline uint32_t ahc_cmd_get_transaction_status(struct scsi_cmnd *cmd);
523static inline uint32_t ahc_get_transaction_status(struct scb *);
524static inline uint32_t ahc_cmd_get_scsi_status(struct scsi_cmnd *cmd);
525static inline uint32_t ahc_get_scsi_status(struct scb *);
526static inline void ahc_set_transaction_tag(struct scb *, int, u_int);
527static inline u_long ahc_get_transfer_length(struct scb *);
528static inline int ahc_get_transfer_dir(struct scb *);
529static inline void ahc_set_residual(struct scb *, u_long);
530static inline void ahc_set_sense_residual(struct scb *scb, u_long resid);
531static inline u_long ahc_get_residual(struct scb *);
532static inline u_long ahc_get_sense_residual(struct scb *);
533static inline int ahc_perform_autosense(struct scb *);
534static inline uint32_t ahc_get_sense_bufsize(struct ahc_softc *,
535 struct scb *);
536static inline void ahc_notify_xfer_settings_change(struct ahc_softc *,
537 struct ahc_devinfo *);
538static inline void ahc_platform_scb_free(struct ahc_softc *ahc,
539 struct scb *scb);
540static inline void ahc_freeze_scb(struct scb *scb);
541
542static inline
543void ahc_cmd_set_transaction_status(struct scsi_cmnd *cmd, uint32_t status)
544{
545 cmd->result &= ~(CAM_STATUS_MASK << 16);
546 cmd->result |= status << 16;
547}
548
549static inline
550void ahc_set_transaction_status(struct scb *scb, uint32_t status)
551{
552 ahc_cmd_set_transaction_status(scb->io_ctx,status);
553}
554
555static inline
556void ahc_cmd_set_scsi_status(struct scsi_cmnd *cmd, uint32_t status)
557{
558 cmd->result &= ~0xFFFF;
559 cmd->result |= status;
560}
561
562static inline
563void ahc_set_scsi_status(struct scb *scb, uint32_t status)
564{
565 ahc_cmd_set_scsi_status(scb->io_ctx, status);
566}
567
568static inline
569uint32_t ahc_cmd_get_transaction_status(struct scsi_cmnd *cmd)
570{
571 return ((cmd->result >> 16) & CAM_STATUS_MASK);
572}
573
574static inline
575uint32_t ahc_get_transaction_status(struct scb *scb)
576{
577 return (ahc_cmd_get_transaction_status(scb->io_ctx));
578}
579
580static inline
581uint32_t ahc_cmd_get_scsi_status(struct scsi_cmnd *cmd)
582{
583 return (cmd->result & 0xFFFF);
584}
585
586static inline
587uint32_t ahc_get_scsi_status(struct scb *scb)
588{
589 return (ahc_cmd_get_scsi_status(scb->io_ctx));
590}
591
592static inline
593void ahc_set_transaction_tag(struct scb *scb, int enabled, u_int type)
594{
595 /*
596 * Nothing to do for linux as the incoming transaction
597 * has no concept of tag/non tagged, etc.
598 */
599}
600
601static inline
602u_long ahc_get_transfer_length(struct scb *scb)
603{
604 return (scb->platform_data->xfer_len);
605}
606
607static inline
608int ahc_get_transfer_dir(struct scb *scb)
609{
610 return (scb->io_ctx->sc_data_direction);
611}
612
613static inline
614void ahc_set_residual(struct scb *scb, u_long resid)
615{
616 scsi_set_resid(scb->io_ctx, resid);
617}
618
619static inline
620void ahc_set_sense_residual(struct scb *scb, u_long resid)
621{
622 scb->platform_data->sense_resid = resid;
623}
624
625static inline
626u_long ahc_get_residual(struct scb *scb)
627{
628 return scsi_get_resid(scb->io_ctx);
629}
630
631static inline
632u_long ahc_get_sense_residual(struct scb *scb)
633{
634 return (scb->platform_data->sense_resid);
635}
636
637static inline
638int ahc_perform_autosense(struct scb *scb)
639{
640 /*
641 * We always perform autosense in Linux.
642 * On other platforms this is set on a
643 * per-transaction basis.
644 */
645 return (1);
646}
647
648static inline uint32_t
649ahc_get_sense_bufsize(struct ahc_softc *ahc, struct scb *scb)
650{
651 return (sizeof(struct scsi_sense_data));
652}
653
654static inline void
655ahc_notify_xfer_settings_change(struct ahc_softc *ahc,
656 struct ahc_devinfo *devinfo)
657{
658 /* Nothing to do here for linux */
659}
660
661static inline void
662ahc_platform_scb_free(struct ahc_softc *ahc, struct scb *scb)
663{
664}
665
666int ahc_platform_alloc(struct ahc_softc *ahc, void *platform_arg);
667void ahc_platform_free(struct ahc_softc *ahc);
668void ahc_platform_freeze_devq(struct ahc_softc *ahc, struct scb *scb);
669
670static inline void
671ahc_freeze_scb(struct scb *scb)
672{
673 if ((scb->io_ctx->result & (CAM_DEV_QFRZN << 16)) == 0) {
674 scb->io_ctx->result |= CAM_DEV_QFRZN << 16;
675 scb->platform_data->dev->qfrozen++;
676 }
677}
678
679void ahc_platform_set_tags(struct ahc_softc *ahc, struct scsi_device *sdev,
680 struct ahc_devinfo *devinfo, ahc_queue_alg);
681int ahc_platform_abort_scbs(struct ahc_softc *ahc, int target,
682 char channel, int lun, u_int tag,
683 role_t role, uint32_t status);
684irqreturn_t
685 ahc_linux_isr(int irq, void *dev_id);
686void ahc_platform_flushwork(struct ahc_softc *ahc);
687void ahc_done(struct ahc_softc*, struct scb*);
688void ahc_send_async(struct ahc_softc *, char channel,
689 u_int target, u_int lun, ac_code);
690void ahc_print_path(struct ahc_softc *, struct scb *);
691
692#ifdef CONFIG_PCI
693#define AHC_PCI_CONFIG 1
694#else
695#define AHC_PCI_CONFIG 0
696#endif
697#define bootverbose aic7xxx_verbose
698extern u_int aic7xxx_verbose;
699#endif /* _AIC7XXX_LINUX_H_ */