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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;
Sergei Shtylyov44850412008-04-18 23:30:45 +0400368 resource_size_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
Denys Vlasenkobe0d6762008-03-23 04:41:22 +0100378void ahc_delay(long);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700379
380
381/***************************** Low Level I/O **********************************/
Denys Vlasenkobe0d6762008-03-23 04:41:22 +0100382uint8_t ahc_inb(struct ahc_softc * ahc, long port);
383void ahc_outb(struct ahc_softc * ahc, long port, uint8_t val);
384void ahc_outsb(struct ahc_softc * ahc, long port,
385 uint8_t *, int count);
386void ahc_insb(struct ahc_softc * ahc, long port,
387 uint8_t *, int count);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700388
389/**************************** Initialization **********************************/
390int ahc_linux_register_host(struct ahc_softc *,
Christoph Hellwig 013791e2005-05-16 18:52:39 +0200391 struct scsi_host_template *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700392
Linus Torvalds1da177e2005-04-16 15:20:36 -0700393/*************************** Pretty Printing **********************************/
394struct info_str {
395 char *buffer;
396 int length;
397 off_t offset;
398 int pos;
399};
400
Linus Torvalds1da177e2005-04-16 15:20:36 -0700401/******************************** Locking *************************************/
402/* Lock protecting internal data structures */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700403
404static __inline void
405ahc_lockinit(struct ahc_softc *ahc)
406{
407 spin_lock_init(&ahc->platform_data->spin_lock);
408}
409
410static __inline void
411ahc_lock(struct ahc_softc *ahc, unsigned long *flags)
412{
413 spin_lock_irqsave(&ahc->platform_data->spin_lock, *flags);
414}
415
416static __inline void
417ahc_unlock(struct ahc_softc *ahc, unsigned long *flags)
418{
419 spin_unlock_irqrestore(&ahc->platform_data->spin_lock, *flags);
420}
421
Linus Torvalds1da177e2005-04-16 15:20:36 -0700422/******************************* PCI Definitions ******************************/
423/*
424 * PCIM_xxx: mask to locate subfield in register
425 * PCIR_xxx: config register offset
426 * PCIC_xxx: device class
427 * PCIS_xxx: device subclass
428 * PCIP_xxx: device programming interface
429 * PCIV_xxx: PCI vendor ID (only required to fixup ancient devices)
430 * PCID_xxx: device ID
431 */
432#define PCIR_DEVVENDOR 0x00
433#define PCIR_VENDOR 0x00
434#define PCIR_DEVICE 0x02
435#define PCIR_COMMAND 0x04
436#define PCIM_CMD_PORTEN 0x0001
437#define PCIM_CMD_MEMEN 0x0002
438#define PCIM_CMD_BUSMASTEREN 0x0004
439#define PCIM_CMD_MWRICEN 0x0010
440#define PCIM_CMD_PERRESPEN 0x0040
441#define PCIM_CMD_SERRESPEN 0x0100
442#define PCIR_STATUS 0x06
443#define PCIR_REVID 0x08
444#define PCIR_PROGIF 0x09
445#define PCIR_SUBCLASS 0x0a
446#define PCIR_CLASS 0x0b
447#define PCIR_CACHELNSZ 0x0c
448#define PCIR_LATTIMER 0x0d
449#define PCIR_HEADERTYPE 0x0e
450#define PCIM_MFDEV 0x80
451#define PCIR_BIST 0x0f
452#define PCIR_CAP_PTR 0x34
453
454/* config registers for header type 0 devices */
455#define PCIR_MAPS 0x10
456#define PCIR_SUBVEND_0 0x2c
457#define PCIR_SUBDEV_0 0x2e
458
Linus Torvalds1da177e2005-04-16 15:20:36 -0700459typedef enum
460{
461 AHC_POWER_STATE_D0,
462 AHC_POWER_STATE_D1,
463 AHC_POWER_STATE_D2,
464 AHC_POWER_STATE_D3
465} ahc_power_state;
466
467/**************************** VL/EISA Routines ********************************/
Linus Torvalds1da177e2005-04-16 15:20:36 -0700468#ifdef CONFIG_EISA
Linus Torvalds1da177e2005-04-16 15:20:36 -0700469int ahc_linux_eisa_init(void);
470void ahc_linux_eisa_exit(void);
471int aic7770_map_registers(struct ahc_softc *ahc,
472 u_int port);
473int aic7770_map_int(struct ahc_softc *ahc, u_int irq);
474#else
475static inline int ahc_linux_eisa_init(void) {
476 return -ENODEV;
477}
478static inline void ahc_linux_eisa_exit(void) {
479}
480#endif
481
482/******************************* PCI Routines *********************************/
483#ifdef CONFIG_PCI
484int ahc_linux_pci_init(void);
485void ahc_linux_pci_exit(void);
486int ahc_pci_map_registers(struct ahc_softc *ahc);
487int ahc_pci_map_int(struct ahc_softc *ahc);
488
Denys Vlasenkobe0d6762008-03-23 04:41:22 +0100489uint32_t ahc_pci_read_config(ahc_dev_softc_t pci,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700490 int reg, int width);
491
Denys Vlasenkobe0d6762008-03-23 04:41:22 +0100492void ahc_pci_write_config(ahc_dev_softc_t pci,
493 int reg, uint32_t value,
494 int width);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700495
496static __inline int ahc_get_pci_function(ahc_dev_softc_t);
497static __inline int
498ahc_get_pci_function(ahc_dev_softc_t pci)
499{
500 return (PCI_FUNC(pci->devfn));
501}
502
503static __inline int ahc_get_pci_slot(ahc_dev_softc_t);
504static __inline int
505ahc_get_pci_slot(ahc_dev_softc_t pci)
506{
507 return (PCI_SLOT(pci->devfn));
508}
509
510static __inline int ahc_get_pci_bus(ahc_dev_softc_t);
511static __inline int
512ahc_get_pci_bus(ahc_dev_softc_t pci)
513{
514 return (pci->bus->number);
515}
516#else
517static inline int ahc_linux_pci_init(void) {
518 return 0;
519}
520static inline void ahc_linux_pci_exit(void) {
521}
522#endif
523
524static __inline void ahc_flush_device_writes(struct ahc_softc *);
525static __inline void
526ahc_flush_device_writes(struct ahc_softc *ahc)
527{
528 /* XXX Is this sufficient for all architectures??? */
529 ahc_inb(ahc, INTSTAT);
530}
531
532/**************************** Proc FS Support *********************************/
Linus Torvalds1da177e2005-04-16 15:20:36 -0700533int ahc_linux_proc_info(struct Scsi_Host *, char *, char **,
534 off_t, int, int);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700535
536/*************************** Domain Validation ********************************/
Linus Torvalds1da177e2005-04-16 15:20:36 -0700537/*********************** Transaction Access Wrappers *************************/
Christoph Hellwig 013791e2005-05-16 18:52:39 +0200538static __inline void ahc_cmd_set_transaction_status(struct scsi_cmnd *, uint32_t);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700539static __inline void ahc_set_transaction_status(struct scb *, uint32_t);
Christoph Hellwig 013791e2005-05-16 18:52:39 +0200540static __inline void ahc_cmd_set_scsi_status(struct scsi_cmnd *, uint32_t);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700541static __inline void ahc_set_scsi_status(struct scb *, uint32_t);
Christoph Hellwig 013791e2005-05-16 18:52:39 +0200542static __inline uint32_t ahc_cmd_get_transaction_status(struct scsi_cmnd *cmd);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700543static __inline uint32_t ahc_get_transaction_status(struct scb *);
Christoph Hellwig 013791e2005-05-16 18:52:39 +0200544static __inline uint32_t ahc_cmd_get_scsi_status(struct scsi_cmnd *cmd);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700545static __inline uint32_t ahc_get_scsi_status(struct scb *);
546static __inline void ahc_set_transaction_tag(struct scb *, int, u_int);
547static __inline u_long ahc_get_transfer_length(struct scb *);
548static __inline int ahc_get_transfer_dir(struct scb *);
549static __inline void ahc_set_residual(struct scb *, u_long);
550static __inline void ahc_set_sense_residual(struct scb *scb, u_long resid);
551static __inline u_long ahc_get_residual(struct scb *);
552static __inline u_long ahc_get_sense_residual(struct scb *);
553static __inline int ahc_perform_autosense(struct scb *);
554static __inline uint32_t ahc_get_sense_bufsize(struct ahc_softc *,
555 struct scb *);
556static __inline void ahc_notify_xfer_settings_change(struct ahc_softc *,
557 struct ahc_devinfo *);
558static __inline void ahc_platform_scb_free(struct ahc_softc *ahc,
559 struct scb *scb);
560static __inline void ahc_freeze_scb(struct scb *scb);
561
562static __inline
Christoph Hellwig 013791e2005-05-16 18:52:39 +0200563void ahc_cmd_set_transaction_status(struct scsi_cmnd *cmd, uint32_t status)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700564{
565 cmd->result &= ~(CAM_STATUS_MASK << 16);
566 cmd->result |= status << 16;
567}
568
569static __inline
570void ahc_set_transaction_status(struct scb *scb, uint32_t status)
571{
572 ahc_cmd_set_transaction_status(scb->io_ctx,status);
573}
574
575static __inline
Christoph Hellwig 013791e2005-05-16 18:52:39 +0200576void ahc_cmd_set_scsi_status(struct scsi_cmnd *cmd, uint32_t status)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700577{
578 cmd->result &= ~0xFFFF;
579 cmd->result |= status;
580}
581
582static __inline
583void ahc_set_scsi_status(struct scb *scb, uint32_t status)
584{
585 ahc_cmd_set_scsi_status(scb->io_ctx, status);
586}
587
588static __inline
Christoph Hellwig 013791e2005-05-16 18:52:39 +0200589uint32_t ahc_cmd_get_transaction_status(struct scsi_cmnd *cmd)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700590{
591 return ((cmd->result >> 16) & CAM_STATUS_MASK);
592}
593
594static __inline
595uint32_t ahc_get_transaction_status(struct scb *scb)
596{
597 return (ahc_cmd_get_transaction_status(scb->io_ctx));
598}
599
600static __inline
Christoph Hellwig 013791e2005-05-16 18:52:39 +0200601uint32_t ahc_cmd_get_scsi_status(struct scsi_cmnd *cmd)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700602{
603 return (cmd->result & 0xFFFF);
604}
605
606static __inline
607uint32_t ahc_get_scsi_status(struct scb *scb)
608{
609 return (ahc_cmd_get_scsi_status(scb->io_ctx));
610}
611
612static __inline
613void ahc_set_transaction_tag(struct scb *scb, int enabled, u_int type)
614{
615 /*
616 * Nothing to do for linux as the incoming transaction
617 * has no concept of tag/non tagged, etc.
618 */
619}
620
621static __inline
622u_long ahc_get_transfer_length(struct scb *scb)
623{
624 return (scb->platform_data->xfer_len);
625}
626
627static __inline
628int ahc_get_transfer_dir(struct scb *scb)
629{
630 return (scb->io_ctx->sc_data_direction);
631}
632
633static __inline
634void ahc_set_residual(struct scb *scb, u_long resid)
635{
FUJITA Tomonori3a57c4a2007-05-26 01:55:14 +0900636 scsi_set_resid(scb->io_ctx, resid);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700637}
638
639static __inline
640void ahc_set_sense_residual(struct scb *scb, u_long resid)
641{
642 scb->platform_data->sense_resid = resid;
643}
644
645static __inline
646u_long ahc_get_residual(struct scb *scb)
647{
FUJITA Tomonori3a57c4a2007-05-26 01:55:14 +0900648 return scsi_get_resid(scb->io_ctx);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700649}
650
651static __inline
652u_long ahc_get_sense_residual(struct scb *scb)
653{
654 return (scb->platform_data->sense_resid);
655}
656
657static __inline
658int ahc_perform_autosense(struct scb *scb)
659{
660 /*
661 * We always perform autosense in Linux.
662 * On other platforms this is set on a
663 * per-transaction basis.
664 */
665 return (1);
666}
667
668static __inline uint32_t
669ahc_get_sense_bufsize(struct ahc_softc *ahc, struct scb *scb)
670{
671 return (sizeof(struct scsi_sense_data));
672}
673
674static __inline void
675ahc_notify_xfer_settings_change(struct ahc_softc *ahc,
676 struct ahc_devinfo *devinfo)
677{
678 /* Nothing to do here for linux */
679}
680
681static __inline void
682ahc_platform_scb_free(struct ahc_softc *ahc, struct scb *scb)
683{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700684}
685
686int ahc_platform_alloc(struct ahc_softc *ahc, void *platform_arg);
687void ahc_platform_free(struct ahc_softc *ahc);
688void ahc_platform_freeze_devq(struct ahc_softc *ahc, struct scb *scb);
689
690static __inline void
691ahc_freeze_scb(struct scb *scb)
692{
693 if ((scb->io_ctx->result & (CAM_DEV_QFRZN << 16)) == 0) {
694 scb->io_ctx->result |= CAM_DEV_QFRZN << 16;
695 scb->platform_data->dev->qfrozen++;
696 }
697}
698
Hannes Reinecke90800632006-10-23 15:25:36 +0200699void ahc_platform_set_tags(struct ahc_softc *ahc, struct scsi_device *sdev,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700700 struct ahc_devinfo *devinfo, ahc_queue_alg);
701int ahc_platform_abort_scbs(struct ahc_softc *ahc, int target,
702 char channel, int lun, u_int tag,
703 role_t role, uint32_t status);
704irqreturn_t
David Howells7d12e782006-10-05 14:55:46 +0100705 ahc_linux_isr(int irq, void *dev_id);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700706void ahc_platform_flushwork(struct ahc_softc *ahc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700707void ahc_done(struct ahc_softc*, struct scb*);
708void ahc_send_async(struct ahc_softc *, char channel,
Hannes Reinecke90800632006-10-23 15:25:36 +0200709 u_int target, u_int lun, ac_code);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700710void ahc_print_path(struct ahc_softc *, struct scb *);
711void ahc_platform_dump_card_state(struct ahc_softc *ahc);
712
713#ifdef CONFIG_PCI
714#define AHC_PCI_CONFIG 1
715#else
716#define AHC_PCI_CONFIG 0
717#endif
718#define bootverbose aic7xxx_verbose
719extern u_int aic7xxx_verbose;
720#endif /* _AIC7XXX_LINUX_H_ */