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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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>
James Bottomley e4e360c2005-05-16 16:39:38 -050067#include <linux/interrupt.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070068#include <linux/module.h>
Christoph Hellwig 013791e2005-05-16 18:52:39 +020069#include <linux/slab.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070070#include <asm/byteorder.h>
71#include <asm/io.h>
72
Christoph Hellwig 013791e2005-05-16 18:52:39 +020073#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>
James Bottomleyb1abb4d2005-05-24 17:15:43 -050079#include <scsi/scsi_transport.h>
80#include <scsi/scsi_transport_spi.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070081
82/* Core SCSI definitions */
83#define AIC_LIB_PREFIX ahc
Linus Torvalds1da177e2005-04-16 15:20:36 -070084
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;
Christoph Hellwig 013791e2005-05-16 18:52:39 +0200112typedef struct scsi_cmnd *ahc_io_ctx_t;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700113
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
Linus Torvalds1da177e2005-04-16 15:20:36 -0700129/************************* Configuration Data *********************************/
130extern u_int aic7xxx_no_probe;
131extern u_int aic7xxx_allow_memio;
Christoph Hellwig 013791e2005-05-16 18:52:39 +0200132extern struct scsi_host_template aic7xxx_driver_template;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700133
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
Christoph Hellwig 7dfa0f22005-05-16 18:54:12 +0200162typedef dma_addr_t bus_dmamap_t;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700163
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
Linus Torvalds1da177e2005-04-16 15:20:36 -0700224/********************************** 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 *******************************/
Linus Torvalds1da177e2005-04-16 15:20:36 -0700233static __inline void
234ahc_scb_timer_reset(struct scb *scb, u_int usec)
235{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700236}
237
238/***************************** SMP support ************************************/
239#include <linux/spinlock.h>
240
James Bottomley79778a22005-08-04 17:33:22 -0500241#define AIC7XXX_DRIVER_VERSION "7.0"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700242
Linus Torvalds1da177e2005-04-16 15:20:36 -0700243/*************************** 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 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700251typedef enum {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700252 AHC_DEV_FREEZE_TIL_EMPTY = 0x02, /* Freeze queue until active == 0 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700253 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 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700256} ahc_linux_dev_flags;
257
Linus Torvalds1da177e2005-04-16 15:20:36 -0700258struct ahc_linux_device {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700259 /*
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 /*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700298 * 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
Linus Torvalds1da177e2005-04-16 15:20:36 -0700328};
329
Linus Torvalds1da177e2005-04-16 15:20:36 -0700330/********************* 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 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700337#define AHC_NSEG 128
Linus Torvalds1da177e2005-04-16 15:20:36 -0700338
339/*
340 * Per-SCB OSM storage.
341 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700342struct 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 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700347};
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 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700355struct ahc_platform_data {
356 /*
357 * Fields accessed from interrupt context.
358 */
James Bottomleyb1abb4d2005-05-24 17:15:43 -0500359 struct scsi_target *starget[AHC_NUM_TARGETS];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700360
361 spinlock_t spin_lock;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700362 u_int qfrozen;
Christoph Hellwig8cac8142006-02-06 15:40:45 +0100363 struct completion *eh_done;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700364 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 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700369};
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
378static __inline void ahc_delay(long);
379static __inline void
380ahc_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 **********************************/
395static __inline uint8_t ahc_inb(struct ahc_softc * ahc, long port);
396static __inline void ahc_outb(struct ahc_softc * ahc, long port, uint8_t val);
397static __inline void ahc_outsb(struct ahc_softc * ahc, long port,
398 uint8_t *, int count);
399static __inline void ahc_insb(struct ahc_softc * ahc, long port,
400 uint8_t *, int count);
401
402static __inline uint8_t
403ahc_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
416static __inline void
417ahc_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
427static __inline void
428ahc_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
441static __inline void
442ahc_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 **********************************/
456int ahc_linux_register_host(struct ahc_softc *,
Christoph Hellwig 013791e2005-05-16 18:52:39 +0200457 struct scsi_host_template *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700458
Linus Torvalds1da177e2005-04-16 15:20:36 -0700459/*************************** Pretty Printing **********************************/
460struct info_str {
461 char *buffer;
462 int length;
463 off_t offset;
464 int pos;
465};
466
467void ahc_format_transinfo(struct info_str *info,
468 struct ahc_transinfo *tinfo);
469
470/******************************** Locking *************************************/
471/* Lock protecting internal data structures */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700472
473static __inline void
474ahc_lockinit(struct ahc_softc *ahc)
475{
476 spin_lock_init(&ahc->platform_data->spin_lock);
477}
478
479static __inline void
480ahc_lock(struct ahc_softc *ahc, unsigned long *flags)
481{
482 spin_lock_irqsave(&ahc->platform_data->spin_lock, *flags);
483}
484
485static __inline void
486ahc_unlock(struct ahc_softc *ahc, unsigned long *flags)
487{
488 spin_unlock_irqrestore(&ahc->platform_data->spin_lock, *flags);
489}
490
Linus Torvalds1da177e2005-04-16 15:20:36 -0700491/******************************* 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
Linus Torvalds1da177e2005-04-16 15:20:36 -0700528typedef 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 ********************************/
Linus Torvalds1da177e2005-04-16 15:20:36 -0700537#ifdef CONFIG_EISA
Linus Torvalds1da177e2005-04-16 15:20:36 -0700538int ahc_linux_eisa_init(void);
539void ahc_linux_eisa_exit(void);
540int aic7770_map_registers(struct ahc_softc *ahc,
541 u_int port);
542int aic7770_map_int(struct ahc_softc *ahc, u_int irq);
543#else
544static inline int ahc_linux_eisa_init(void) {
545 return -ENODEV;
546}
547static inline void ahc_linux_eisa_exit(void) {
548}
549#endif
550
551/******************************* PCI Routines *********************************/
552#ifdef CONFIG_PCI
553int ahc_linux_pci_init(void);
554void ahc_linux_pci_exit(void);
555int ahc_pci_map_registers(struct ahc_softc *ahc);
556int ahc_pci_map_int(struct ahc_softc *ahc);
557
558static __inline uint32_t ahc_pci_read_config(ahc_dev_softc_t pci,
559 int reg, int width);
560
561static __inline uint32_t
562ahc_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
591static __inline void ahc_pci_write_config(ahc_dev_softc_t pci,
592 int reg, uint32_t value,
593 int width);
594
595static __inline void
596ahc_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
614static __inline int ahc_get_pci_function(ahc_dev_softc_t);
615static __inline int
616ahc_get_pci_function(ahc_dev_softc_t pci)
617{
618 return (PCI_FUNC(pci->devfn));
619}
620
621static __inline int ahc_get_pci_slot(ahc_dev_softc_t);
622static __inline int
623ahc_get_pci_slot(ahc_dev_softc_t pci)
624{
625 return (PCI_SLOT(pci->devfn));
626}
627
628static __inline int ahc_get_pci_bus(ahc_dev_softc_t);
629static __inline int
630ahc_get_pci_bus(ahc_dev_softc_t pci)
631{
632 return (pci->bus->number);
633}
634#else
635static inline int ahc_linux_pci_init(void) {
636 return 0;
637}
638static inline void ahc_linux_pci_exit(void) {
639}
640#endif
641
642static __inline void ahc_flush_device_writes(struct ahc_softc *);
643static __inline void
644ahc_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 *********************************/
Linus Torvalds1da177e2005-04-16 15:20:36 -0700651int ahc_linux_proc_info(struct Scsi_Host *, char *, char **,
652 off_t, int, int);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700653
654/*************************** Domain Validation ********************************/
Linus Torvalds1da177e2005-04-16 15:20:36 -0700655/*********************** Transaction Access Wrappers *************************/
Christoph Hellwig 013791e2005-05-16 18:52:39 +0200656static __inline void ahc_cmd_set_transaction_status(struct scsi_cmnd *, uint32_t);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700657static __inline void ahc_set_transaction_status(struct scb *, uint32_t);
Christoph Hellwig 013791e2005-05-16 18:52:39 +0200658static __inline void ahc_cmd_set_scsi_status(struct scsi_cmnd *, uint32_t);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700659static __inline void ahc_set_scsi_status(struct scb *, uint32_t);
Christoph Hellwig 013791e2005-05-16 18:52:39 +0200660static __inline uint32_t ahc_cmd_get_transaction_status(struct scsi_cmnd *cmd);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700661static __inline uint32_t ahc_get_transaction_status(struct scb *);
Christoph Hellwig 013791e2005-05-16 18:52:39 +0200662static __inline uint32_t ahc_cmd_get_scsi_status(struct scsi_cmnd *cmd);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700663static __inline uint32_t ahc_get_scsi_status(struct scb *);
664static __inline void ahc_set_transaction_tag(struct scb *, int, u_int);
665static __inline u_long ahc_get_transfer_length(struct scb *);
666static __inline int ahc_get_transfer_dir(struct scb *);
667static __inline void ahc_set_residual(struct scb *, u_long);
668static __inline void ahc_set_sense_residual(struct scb *scb, u_long resid);
669static __inline u_long ahc_get_residual(struct scb *);
670static __inline u_long ahc_get_sense_residual(struct scb *);
671static __inline int ahc_perform_autosense(struct scb *);
672static __inline uint32_t ahc_get_sense_bufsize(struct ahc_softc *,
673 struct scb *);
674static __inline void ahc_notify_xfer_settings_change(struct ahc_softc *,
675 struct ahc_devinfo *);
676static __inline void ahc_platform_scb_free(struct ahc_softc *ahc,
677 struct scb *scb);
678static __inline void ahc_freeze_scb(struct scb *scb);
679
680static __inline
Christoph Hellwig 013791e2005-05-16 18:52:39 +0200681void ahc_cmd_set_transaction_status(struct scsi_cmnd *cmd, uint32_t status)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700682{
683 cmd->result &= ~(CAM_STATUS_MASK << 16);
684 cmd->result |= status << 16;
685}
686
687static __inline
688void ahc_set_transaction_status(struct scb *scb, uint32_t status)
689{
690 ahc_cmd_set_transaction_status(scb->io_ctx,status);
691}
692
693static __inline
Christoph Hellwig 013791e2005-05-16 18:52:39 +0200694void ahc_cmd_set_scsi_status(struct scsi_cmnd *cmd, uint32_t status)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700695{
696 cmd->result &= ~0xFFFF;
697 cmd->result |= status;
698}
699
700static __inline
701void ahc_set_scsi_status(struct scb *scb, uint32_t status)
702{
703 ahc_cmd_set_scsi_status(scb->io_ctx, status);
704}
705
706static __inline
Christoph Hellwig 013791e2005-05-16 18:52:39 +0200707uint32_t ahc_cmd_get_transaction_status(struct scsi_cmnd *cmd)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700708{
709 return ((cmd->result >> 16) & CAM_STATUS_MASK);
710}
711
712static __inline
713uint32_t ahc_get_transaction_status(struct scb *scb)
714{
715 return (ahc_cmd_get_transaction_status(scb->io_ctx));
716}
717
718static __inline
Christoph Hellwig 013791e2005-05-16 18:52:39 +0200719uint32_t ahc_cmd_get_scsi_status(struct scsi_cmnd *cmd)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700720{
721 return (cmd->result & 0xFFFF);
722}
723
724static __inline
725uint32_t ahc_get_scsi_status(struct scb *scb)
726{
727 return (ahc_cmd_get_scsi_status(scb->io_ctx));
728}
729
730static __inline
731void 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
739static __inline
740u_long ahc_get_transfer_length(struct scb *scb)
741{
742 return (scb->platform_data->xfer_len);
743}
744
745static __inline
746int ahc_get_transfer_dir(struct scb *scb)
747{
748 return (scb->io_ctx->sc_data_direction);
749}
750
751static __inline
752void ahc_set_residual(struct scb *scb, u_long resid)
753{
FUJITA Tomonori3a57c4a2007-05-26 01:55:14 +0900754 scsi_set_resid(scb->io_ctx, resid);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700755}
756
757static __inline
758void ahc_set_sense_residual(struct scb *scb, u_long resid)
759{
760 scb->platform_data->sense_resid = resid;
761}
762
763static __inline
764u_long ahc_get_residual(struct scb *scb)
765{
FUJITA Tomonori3a57c4a2007-05-26 01:55:14 +0900766 return scsi_get_resid(scb->io_ctx);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700767}
768
769static __inline
770u_long ahc_get_sense_residual(struct scb *scb)
771{
772 return (scb->platform_data->sense_resid);
773}
774
775static __inline
776int 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
786static __inline uint32_t
787ahc_get_sense_bufsize(struct ahc_softc *ahc, struct scb *scb)
788{
789 return (sizeof(struct scsi_sense_data));
790}
791
792static __inline void
793ahc_notify_xfer_settings_change(struct ahc_softc *ahc,
794 struct ahc_devinfo *devinfo)
795{
796 /* Nothing to do here for linux */
797}
798
799static __inline void
800ahc_platform_scb_free(struct ahc_softc *ahc, struct scb *scb)
801{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700802}
803
804int ahc_platform_alloc(struct ahc_softc *ahc, void *platform_arg);
805void ahc_platform_free(struct ahc_softc *ahc);
806void ahc_platform_freeze_devq(struct ahc_softc *ahc, struct scb *scb);
807
808static __inline void
809ahc_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
Hannes Reinecke90800632006-10-23 15:25:36 +0200817void ahc_platform_set_tags(struct ahc_softc *ahc, struct scsi_device *sdev,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700818 struct ahc_devinfo *devinfo, ahc_queue_alg);
819int 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);
822irqreturn_t
David Howells7d12e782006-10-05 14:55:46 +0100823 ahc_linux_isr(int irq, void *dev_id);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700824void ahc_platform_flushwork(struct ahc_softc *ahc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700825void ahc_done(struct ahc_softc*, struct scb*);
826void ahc_send_async(struct ahc_softc *, char channel,
Hannes Reinecke90800632006-10-23 15:25:36 +0200827 u_int target, u_int lun, ac_code);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700828void ahc_print_path(struct ahc_softc *, struct scb *);
829void 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
837extern u_int aic7xxx_verbose;
838#endif /* _AIC7XXX_LINUX_H_ */