2 * Adaptec AIC7xxx device driver for Linux.
4 * Copyright (c) 1994 John Aycock
5 * The University of Calgary Department of Computer Science.
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)
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.
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.
21 * Copyright (c) 2000-2003 Adaptec Inc.
22 * All rights reserved.
24 * Redistribution and use in source and binary forms, with or without
25 * modification, are permitted provided that the following conditions
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.
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.
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.
56 * $Id: //depot/aic7xxx/linux/drivers/scsi/aic7xxx/aic7xxx_osm.h#151 $
59 #ifndef _AIC7XXX_LINUX_H_
60 #define _AIC7XXX_LINUX_H_
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/smp_lock.h>
68 #include <linux/version.h>
69 #include <linux/module.h>
70 #include <asm/byteorder.h>
73 #include <linux/interrupt.h> /* For tasklet support. */
74 #include <linux/config.h>
75 #include <linux/slab.h>
77 /* Core SCSI definitions */
78 #define AIC_LIB_PREFIX ahc
80 #include <scsi/scsi_host.h>
82 /* Name space conflict with BSD queue macros */
89 #include "scsi_message.h"
92 /*********************************** Debugging ********************************/
93 #ifdef CONFIG_AIC7XXX_DEBUG_ENABLE
94 #ifdef CONFIG_AIC7XXX_DEBUG_MASK
96 #define AHC_DEBUG_OPTS CONFIG_AIC7XXX_DEBUG_MASK
99 * Compile in debugging code, but do not enable any printfs.
103 /* No debugging code. */
106 /************************* Forward Declarations *******************************/
108 typedef struct pci_dev
*ahc_dev_softc_t
;
109 typedef Scsi_Cmnd
*ahc_io_ctx_t
;
111 /******************************* Byte Order ***********************************/
112 #define ahc_htobe16(x) cpu_to_be16(x)
113 #define ahc_htobe32(x) cpu_to_be32(x)
114 #define ahc_htobe64(x) cpu_to_be64(x)
115 #define ahc_htole16(x) cpu_to_le16(x)
116 #define ahc_htole32(x) cpu_to_le32(x)
117 #define ahc_htole64(x) cpu_to_le64(x)
119 #define ahc_be16toh(x) be16_to_cpu(x)
120 #define ahc_be32toh(x) be32_to_cpu(x)
121 #define ahc_be64toh(x) be64_to_cpu(x)
122 #define ahc_le16toh(x) le16_to_cpu(x)
123 #define ahc_le32toh(x) le32_to_cpu(x)
124 #define ahc_le64toh(x) le64_to_cpu(x)
126 #ifndef LITTLE_ENDIAN
127 #define LITTLE_ENDIAN 1234
131 #define BIG_ENDIAN 4321
135 #if defined(__BIG_ENDIAN)
136 #define BYTE_ORDER BIG_ENDIAN
138 #if defined(__LITTLE_ENDIAN)
139 #define BYTE_ORDER LITTLE_ENDIAN
141 #endif /* BYTE_ORDER */
143 /************************* Configuration Data *********************************/
144 extern u_int aic7xxx_no_probe
;
145 extern u_int aic7xxx_allow_memio
;
146 extern int aic7xxx_detect_complete
;
147 extern Scsi_Host_Template aic7xxx_driver_template
;
149 /***************************** Bus Space/DMA **********************************/
151 typedef uint32_t bus_size_t
;
160 volatile uint8_t __iomem
*maddr
;
161 } bus_space_handle_t
;
163 typedef struct bus_dma_segment
169 struct ahc_linux_dma_tag
171 bus_size_t alignment
;
175 typedef struct ahc_linux_dma_tag
* bus_dma_tag_t
;
177 struct ahc_linux_dmamap
181 typedef struct ahc_linux_dmamap
* bus_dmamap_t
;
183 typedef int bus_dma_filter_t(void*, dma_addr_t
);
184 typedef void bus_dmamap_callback_t(void *, bus_dma_segment_t
*, int, int);
186 #define BUS_DMA_WAITOK 0x0
187 #define BUS_DMA_NOWAIT 0x1
188 #define BUS_DMA_ALLOCNOW 0x2
189 #define BUS_DMA_LOAD_SEGS 0x4 /*
190 * Argument is an S/G list not
194 #define BUS_SPACE_MAXADDR 0xFFFFFFFF
195 #define BUS_SPACE_MAXADDR_32BIT 0xFFFFFFFF
196 #define BUS_SPACE_MAXSIZE_32BIT 0xFFFFFFFF
198 int ahc_dma_tag_create(struct ahc_softc
*, bus_dma_tag_t
/*parent*/,
199 bus_size_t
/*alignment*/, bus_size_t
/*boundary*/,
200 dma_addr_t
/*lowaddr*/, dma_addr_t
/*highaddr*/,
201 bus_dma_filter_t*/
*filter*/
, void */
*filterarg*/
,
202 bus_size_t
/*maxsize*/, int /*nsegments*/,
203 bus_size_t
/*maxsegsz*/, int /*flags*/,
204 bus_dma_tag_t */
*dma_tagp*/
);
206 void ahc_dma_tag_destroy(struct ahc_softc
*, bus_dma_tag_t
/*tag*/);
208 int ahc_dmamem_alloc(struct ahc_softc
*, bus_dma_tag_t
/*dmat*/,
209 void** /*vaddr*/, int /*flags*/,
210 bus_dmamap_t
* /*mapp*/);
212 void ahc_dmamem_free(struct ahc_softc
*, bus_dma_tag_t
/*dmat*/,
213 void* /*vaddr*/, bus_dmamap_t
/*map*/);
215 void ahc_dmamap_destroy(struct ahc_softc
*, bus_dma_tag_t
/*tag*/,
216 bus_dmamap_t
/*map*/);
218 int ahc_dmamap_load(struct ahc_softc
*ahc
, bus_dma_tag_t
/*dmat*/,
219 bus_dmamap_t
/*map*/, void * /*buf*/,
220 bus_size_t
/*buflen*/, bus_dmamap_callback_t
*,
221 void */
*callback_arg*/
, int /*flags*/);
223 int ahc_dmamap_unload(struct ahc_softc
*, bus_dma_tag_t
, bus_dmamap_t
);
226 * Operations performed by ahc_dmamap_sync().
228 #define BUS_DMASYNC_PREREAD 0x01 /* pre-read synchronization */
229 #define BUS_DMASYNC_POSTREAD 0x02 /* post-read synchronization */
230 #define BUS_DMASYNC_PREWRITE 0x04 /* pre-write synchronization */
231 #define BUS_DMASYNC_POSTWRITE 0x08 /* post-write synchronization */
235 * ahc_dmamap_sync is only used on buffers allocated with
236 * the pci_alloc_consistent() API. Although I'm not sure how
237 * this works on architectures with a write buffer, Linux does
238 * not have an API to sync "coherent" memory. Perhaps we need
241 #define ahc_dmamap_sync(ahc, dma_tag, dmamap, offset, len, op)
243 /************************** Timer DataStructures ******************************/
244 typedef struct timer_list ahc_timer_t
;
246 /********************************** Includes **********************************/
247 #ifdef CONFIG_AIC7XXX_REG_PRETTY_PRINT
248 #define AIC_DEBUG_REGISTERS 1
250 #define AIC_DEBUG_REGISTERS 0
254 /***************************** Timer Facilities *******************************/
255 #define ahc_timer_init init_timer
256 #define ahc_timer_stop del_timer_sync
257 typedef void ahc_linux_callback_t (u_long
);
258 static __inline
void ahc_timer_reset(ahc_timer_t
*timer
, int usec
,
259 ahc_callback_t
*func
, void *arg
);
260 static __inline
void ahc_scb_timer_reset(struct scb
*scb
, u_int usec
);
263 ahc_timer_reset(ahc_timer_t
*timer
, int usec
, ahc_callback_t
*func
, void *arg
)
265 struct ahc_softc
*ahc
;
267 ahc
= (struct ahc_softc
*)arg
;
269 timer
->data
= (u_long
)arg
;
270 timer
->expires
= jiffies
+ (usec
* HZ
)/1000000;
271 timer
->function
= (ahc_linux_callback_t
*)func
;
276 ahc_scb_timer_reset(struct scb
*scb
, u_int usec
)
278 mod_timer(&scb
->io_ctx
->eh_timeout
, jiffies
+ (usec
* HZ
)/1000000);
281 /***************************** SMP support ************************************/
282 #include <linux/spinlock.h>
284 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0) || defined(SCSI_HAS_HOST_LOCK))
285 #define AHC_SCSI_HAS_HOST_LOCK 1
287 #define AHC_SCSI_HAS_HOST_LOCK 0
290 #define AIC7XXX_DRIVER_VERSION "6.2.36"
292 /**************************** Front End Queues ********************************/
294 * Data structure used to cast the Linux struct scsi_cmnd to something
295 * that allows us to use the queue macros. The linux structure has
296 * plenty of space to hold the links fields as required by the queue
297 * macros, but the queue macors require them to have the correct type.
299 struct ahc_cmd_internal
{
300 /* Area owned by the Linux scsi layer. */
301 uint8_t private[offsetof(struct scsi_cmnd
, SCp
.Status
)];
303 STAILQ_ENTRY(ahc_cmd
) ste
;
304 LIST_ENTRY(ahc_cmd
) le
;
305 TAILQ_ENTRY(ahc_cmd
) tqe
;
312 struct ahc_cmd_internal icmd
;
313 struct scsi_cmnd scsi_cmd
;
317 #define acmd_icmd(cmd) ((cmd)->un.icmd)
318 #define acmd_scsi_cmd(cmd) ((cmd)->un.scsi_cmd)
319 #define acmd_links un.icmd.links
321 /*************************** Device Data Structures ***************************/
323 * A per probed device structure used to deal with some error recovery
324 * scenarios that the Linux mid-layer code just doesn't know how to
325 * handle. The structure allocated for a device only becomes persistent
326 * after a successfully completed inquiry command to the target when
327 * that inquiry data indicates a lun is present.
329 TAILQ_HEAD(ahc_busyq
, ahc_cmd
);
331 AHC_DEV_UNCONFIGURED
= 0x01,
332 AHC_DEV_FREEZE_TIL_EMPTY
= 0x02, /* Freeze queue until active == 0 */
333 AHC_DEV_TIMER_ACTIVE
= 0x04, /* Our timer is active */
334 AHC_DEV_ON_RUN_LIST
= 0x08, /* Queued to be run later */
335 AHC_DEV_Q_BASIC
= 0x10, /* Allow basic device queuing */
336 AHC_DEV_Q_TAGGED
= 0x20, /* Allow full SCSI2 command queueing */
337 AHC_DEV_PERIODIC_OTAG
= 0x40, /* Send OTAG to prevent starvation */
338 AHC_DEV_SLAVE_CONFIGURED
= 0x80 /* slave_configure() has been called */
339 } ahc_linux_dev_flags
;
341 struct ahc_linux_target
;
342 struct ahc_linux_device
{
343 TAILQ_ENTRY(ahc_linux_device
) links
;
344 struct ahc_busyq busyq
;
347 * The number of transactions currently
348 * queued to the device.
353 * The currently allowed number of
354 * transactions that can be queued to
355 * the device. Must be signed for
356 * conversion from tagged to untagged
357 * mode where the device may have more
358 * than one outstanding active transaction.
363 * A positive count indicates that this
364 * device's queue is halted.
369 * Cumulative command counter.
371 u_long commands_issued
;
374 * The number of tagged transactions when
375 * running at our current opening level
376 * that have been successfully received by
377 * this device since the last QUEUE FULL.
379 u_int tag_success_count
;
380 #define AHC_TAG_SUCCESS_INTERVAL 50
382 ahc_linux_dev_flags flags
;
387 struct timer_list timer
;
390 * The high limit for the tags variable.
395 * The computed number of tags outstanding
396 * at the time of the last QUEUE FULL event.
398 u_int tags_on_last_queuefull
;
401 * How many times we have seen a queue full
402 * with the same number of tags. This is used
403 * to stop our adaptive queue depth algorithm
404 * on devices with a fixed number of tags.
406 u_int last_queuefull_same_count
;
407 #define AHC_LOCK_TAGS_COUNT 50
410 * How many transactions have been queued
411 * without the device going idle. We use
412 * this statistic to determine when to issue
413 * an ordered tag to prevent transaction
414 * starvation. This statistic is only updated
415 * if the AHC_DEV_PERIODIC_OTAG flag is set
418 u_int commands_since_idle_or_otag
;
419 #define AHC_OTAG_THRESH 500
422 Scsi_Device
*scsi_device
;
423 struct ahc_linux_target
*target
;
427 AHC_INQ_VALID
= 0x02,
428 } ahc_linux_targ_flags
;
430 struct ahc_linux_target
{
431 struct ahc_linux_device
*devices
[AHC_NUM_LUNS
];
435 struct ahc_transinfo last_tinfo
;
436 struct ahc_softc
*ahc
;
437 ahc_linux_targ_flags flags
;
438 struct scsi_inquiry_data
*inq_data
;
441 /********************* Definitions Required by the Core ***********************/
443 * Number of SG segments we require. So long as the S/G segments for
444 * a particular transaction are allocated in a physically contiguous
445 * manner and are allocated below 4GB, the number of S/G segments is
448 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
450 * We dynamically adjust the number of segments in pre-2.5 kernels to
451 * avoid fragmentation issues in the SCSI mid-layer's private memory
452 * allocator. See aic7xxx_osm.c ahc_linux_size_nseg() for details.
454 extern u_int ahc_linux_nseg
;
455 #define AHC_NSEG ahc_linux_nseg
456 #define AHC_LINUX_MIN_NSEG 64
462 * Per-SCB OSM storage.
465 AHC_UP_EH_SEMAPHORE
= 0x1
466 } ahc_linux_scb_flags
;
468 struct scb_platform_data
{
469 struct ahc_linux_device
*dev
;
470 dma_addr_t buf_busaddr
;
472 uint32_t sense_resid
; /* Auto-Sense residual */
473 ahc_linux_scb_flags flags
;
477 * Define a structure used for each host adapter. All members are
478 * aligned on a boundary >= the size of the member to honor the
479 * alignment restrictions of the various platforms supported by
483 AHC_RUN_CMPLT_Q_TIMER
= 0x10
484 } ahc_linux_softc_flags
;
486 TAILQ_HEAD(ahc_completeq
, ahc_cmd
);
488 struct ahc_platform_data
{
490 * Fields accessed from interrupt context.
492 struct ahc_linux_target
*targets
[AHC_NUM_TARGETS
];
493 TAILQ_HEAD(, ahc_linux_device
) device_runq
;
494 struct ahc_completeq completeq
;
496 spinlock_t spin_lock
;
497 struct tasklet_struct runq_tasklet
;
500 struct timer_list completeq_timer
;
501 struct timer_list reset_timer
;
502 struct semaphore eh_sem
;
503 struct semaphore dv_sem
;
504 struct semaphore dv_cmd_sem
; /* XXX This needs to be in
507 struct scsi_device
*dv_scsi_dev
;
508 struct Scsi_Host
*host
; /* pointer to scsi host */
509 #define AHC_LINUX_NOIRQ ((uint32_t)~0)
510 uint32_t irq
; /* IRQ for this adapter */
511 uint32_t bios_address
;
512 uint32_t mem_busaddr
; /* Mem Base Addr */
513 uint64_t hw_dma_mask
;
514 ahc_linux_softc_flags flags
;
517 /************************** OS Utility Wrappers *******************************/
518 #define printf printk
519 #define M_NOWAIT GFP_ATOMIC
521 #define malloc(size, type, flags) kmalloc(size, flags)
522 #define free(ptr, type) kfree(ptr)
524 static __inline
void ahc_delay(long);
529 * udelay on Linux can have problems for
530 * multi-millisecond waits. Wait at most
540 /***************************** Low Level I/O **********************************/
541 static __inline
uint8_t ahc_inb(struct ahc_softc
* ahc
, long port
);
542 static __inline
void ahc_outb(struct ahc_softc
* ahc
, long port
, uint8_t val
);
543 static __inline
void ahc_outsb(struct ahc_softc
* ahc
, long port
,
544 uint8_t *, int count
);
545 static __inline
void ahc_insb(struct ahc_softc
* ahc
, long port
,
546 uint8_t *, int count
);
548 static __inline
uint8_t
549 ahc_inb(struct ahc_softc
* ahc
, long port
)
553 if (ahc
->tag
== BUS_SPACE_MEMIO
) {
554 x
= readb(ahc
->bsh
.maddr
+ port
);
556 x
= inb(ahc
->bsh
.ioport
+ port
);
563 ahc_outb(struct ahc_softc
* ahc
, long port
, uint8_t val
)
565 if (ahc
->tag
== BUS_SPACE_MEMIO
) {
566 writeb(val
, ahc
->bsh
.maddr
+ port
);
568 outb(val
, ahc
->bsh
.ioport
+ port
);
574 ahc_outsb(struct ahc_softc
* ahc
, long port
, uint8_t *array
, int count
)
579 * There is probably a more efficient way to do this on Linux
580 * but we don't use this for anything speed critical and this
583 for (i
= 0; i
< count
; i
++)
584 ahc_outb(ahc
, port
, *array
++);
588 ahc_insb(struct ahc_softc
* ahc
, long port
, uint8_t *array
, int count
)
593 * There is probably a more efficient way to do this on Linux
594 * but we don't use this for anything speed critical and this
597 for (i
= 0; i
< count
; i
++)
598 *array
++ = ahc_inb(ahc
, port
);
601 /**************************** Initialization **********************************/
602 int ahc_linux_register_host(struct ahc_softc
*,
603 Scsi_Host_Template
*);
605 uint64_t ahc_linux_get_memsize(void);
607 /*************************** Pretty Printing **********************************/
615 void ahc_format_transinfo(struct info_str
*info
,
616 struct ahc_transinfo
*tinfo
);
618 /******************************** Locking *************************************/
619 /* Lock protecting internal data structures */
620 static __inline
void ahc_lockinit(struct ahc_softc
*);
621 static __inline
void ahc_lock(struct ahc_softc
*, unsigned long *flags
);
622 static __inline
void ahc_unlock(struct ahc_softc
*, unsigned long *flags
);
624 /* Lock acquisition and release of the above lock in midlayer entry points. */
625 static __inline
void ahc_midlayer_entrypoint_lock(struct ahc_softc
*,
626 unsigned long *flags
);
627 static __inline
void ahc_midlayer_entrypoint_unlock(struct ahc_softc
*,
628 unsigned long *flags
);
630 /* Lock held during command compeletion to the upper layer */
631 static __inline
void ahc_done_lockinit(struct ahc_softc
*);
632 static __inline
void ahc_done_lock(struct ahc_softc
*, unsigned long *flags
);
633 static __inline
void ahc_done_unlock(struct ahc_softc
*, unsigned long *flags
);
635 /* Lock held during ahc_list manipulation and ahc softc frees */
636 extern spinlock_t ahc_list_spinlock
;
637 static __inline
void ahc_list_lockinit(void);
638 static __inline
void ahc_list_lock(unsigned long *flags
);
639 static __inline
void ahc_list_unlock(unsigned long *flags
);
642 ahc_lockinit(struct ahc_softc
*ahc
)
644 spin_lock_init(&ahc
->platform_data
->spin_lock
);
648 ahc_lock(struct ahc_softc
*ahc
, unsigned long *flags
)
650 spin_lock_irqsave(&ahc
->platform_data
->spin_lock
, *flags
);
654 ahc_unlock(struct ahc_softc
*ahc
, unsigned long *flags
)
656 spin_unlock_irqrestore(&ahc
->platform_data
->spin_lock
, *flags
);
660 ahc_midlayer_entrypoint_lock(struct ahc_softc
*ahc
, unsigned long *flags
)
663 * In 2.5.X and some 2.4.X versions, the midlayer takes our
664 * lock just before calling us, so we avoid locking again.
665 * For other kernel versions, the io_request_lock is taken
666 * just before our entry point is called. In this case, we
667 * trade the io_request_lock for our per-softc lock.
669 #if AHC_SCSI_HAS_HOST_LOCK == 0
670 spin_unlock(&io_request_lock
);
671 spin_lock(&ahc
->platform_data
->spin_lock
);
676 ahc_midlayer_entrypoint_unlock(struct ahc_softc
*ahc
, unsigned long *flags
)
678 #if AHC_SCSI_HAS_HOST_LOCK == 0
679 spin_unlock(&ahc
->platform_data
->spin_lock
);
680 spin_lock(&io_request_lock
);
685 ahc_done_lockinit(struct ahc_softc
*ahc
)
688 * In 2.5.X, our own lock is held during completions.
689 * In previous versions, the io_request_lock is used.
690 * In either case, we can't initialize this lock again.
695 ahc_done_lock(struct ahc_softc
*ahc
, unsigned long *flags
)
697 #if AHC_SCSI_HAS_HOST_LOCK == 0
698 spin_lock_irqsave(&io_request_lock
, *flags
);
703 ahc_done_unlock(struct ahc_softc
*ahc
, unsigned long *flags
)
705 #if AHC_SCSI_HAS_HOST_LOCK == 0
706 spin_unlock_irqrestore(&io_request_lock
, *flags
);
711 ahc_list_lockinit(void)
713 spin_lock_init(&ahc_list_spinlock
);
717 ahc_list_lock(unsigned long *flags
)
719 spin_lock_irqsave(&ahc_list_spinlock
, *flags
);
723 ahc_list_unlock(unsigned long *flags
)
725 spin_unlock_irqrestore(&ahc_list_spinlock
, *flags
);
728 /******************************* PCI Definitions ******************************/
730 * PCIM_xxx: mask to locate subfield in register
731 * PCIR_xxx: config register offset
732 * PCIC_xxx: device class
733 * PCIS_xxx: device subclass
734 * PCIP_xxx: device programming interface
735 * PCIV_xxx: PCI vendor ID (only required to fixup ancient devices)
736 * PCID_xxx: device ID
738 #define PCIR_DEVVENDOR 0x00
739 #define PCIR_VENDOR 0x00
740 #define PCIR_DEVICE 0x02
741 #define PCIR_COMMAND 0x04
742 #define PCIM_CMD_PORTEN 0x0001
743 #define PCIM_CMD_MEMEN 0x0002
744 #define PCIM_CMD_BUSMASTEREN 0x0004
745 #define PCIM_CMD_MWRICEN 0x0010
746 #define PCIM_CMD_PERRESPEN 0x0040
747 #define PCIM_CMD_SERRESPEN 0x0100
748 #define PCIR_STATUS 0x06
749 #define PCIR_REVID 0x08
750 #define PCIR_PROGIF 0x09
751 #define PCIR_SUBCLASS 0x0a
752 #define PCIR_CLASS 0x0b
753 #define PCIR_CACHELNSZ 0x0c
754 #define PCIR_LATTIMER 0x0d
755 #define PCIR_HEADERTYPE 0x0e
756 #define PCIM_MFDEV 0x80
757 #define PCIR_BIST 0x0f
758 #define PCIR_CAP_PTR 0x34
760 /* config registers for header type 0 devices */
761 #define PCIR_MAPS 0x10
762 #define PCIR_SUBVEND_0 0x2c
763 #define PCIR_SUBDEV_0 0x2e
765 extern struct pci_driver aic7xxx_pci_driver
;
775 /**************************** VL/EISA Routines ********************************/
776 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0) \
777 && (defined(__i386__) || defined(__alpha__)) \
778 && (!defined(CONFIG_EISA)))
783 extern uint32_t aic7xxx_probe_eisa_vl
;
784 int ahc_linux_eisa_init(void);
785 void ahc_linux_eisa_exit(void);
786 int aic7770_map_registers(struct ahc_softc
*ahc
,
788 int aic7770_map_int(struct ahc_softc
*ahc
, u_int irq
);
790 static inline int ahc_linux_eisa_init(void) {
793 static inline void ahc_linux_eisa_exit(void) {
797 /******************************* PCI Routines *********************************/
799 int ahc_linux_pci_init(void);
800 void ahc_linux_pci_exit(void);
801 int ahc_pci_map_registers(struct ahc_softc
*ahc
);
802 int ahc_pci_map_int(struct ahc_softc
*ahc
);
804 static __inline
uint32_t ahc_pci_read_config(ahc_dev_softc_t pci
,
807 static __inline
uint32_t
808 ahc_pci_read_config(ahc_dev_softc_t pci
, int reg
, int width
)
815 pci_read_config_byte(pci
, reg
, &retval
);
821 pci_read_config_word(pci
, reg
, &retval
);
827 pci_read_config_dword(pci
, reg
, &retval
);
831 panic("ahc_pci_read_config: Read size too big");
837 static __inline
void ahc_pci_write_config(ahc_dev_softc_t pci
,
838 int reg
, uint32_t value
,
842 ahc_pci_write_config(ahc_dev_softc_t pci
, int reg
, uint32_t value
, int width
)
846 pci_write_config_byte(pci
, reg
, value
);
849 pci_write_config_word(pci
, reg
, value
);
852 pci_write_config_dword(pci
, reg
, value
);
855 panic("ahc_pci_write_config: Write size too big");
860 static __inline
int ahc_get_pci_function(ahc_dev_softc_t
);
862 ahc_get_pci_function(ahc_dev_softc_t pci
)
864 return (PCI_FUNC(pci
->devfn
));
867 static __inline
int ahc_get_pci_slot(ahc_dev_softc_t
);
869 ahc_get_pci_slot(ahc_dev_softc_t pci
)
871 return (PCI_SLOT(pci
->devfn
));
874 static __inline
int ahc_get_pci_bus(ahc_dev_softc_t
);
876 ahc_get_pci_bus(ahc_dev_softc_t pci
)
878 return (pci
->bus
->number
);
881 static inline int ahc_linux_pci_init(void) {
884 static inline void ahc_linux_pci_exit(void) {
888 static __inline
void ahc_flush_device_writes(struct ahc_softc
*);
890 ahc_flush_device_writes(struct ahc_softc
*ahc
)
892 /* XXX Is this sufficient for all architectures??? */
893 ahc_inb(ahc
, INTSTAT
);
896 /**************************** Proc FS Support *********************************/
897 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
898 int ahc_linux_proc_info(char *, char **, off_t
, int, int, int);
900 int ahc_linux_proc_info(struct Scsi_Host
*, char *, char **,
904 /*************************** Domain Validation ********************************/
905 /*********************** Transaction Access Wrappers *************************/
906 static __inline
void ahc_cmd_set_transaction_status(Scsi_Cmnd
*, uint32_t);
907 static __inline
void ahc_set_transaction_status(struct scb
*, uint32_t);
908 static __inline
void ahc_cmd_set_scsi_status(Scsi_Cmnd
*, uint32_t);
909 static __inline
void ahc_set_scsi_status(struct scb
*, uint32_t);
910 static __inline
uint32_t ahc_cmd_get_transaction_status(Scsi_Cmnd
*cmd
);
911 static __inline
uint32_t ahc_get_transaction_status(struct scb
*);
912 static __inline
uint32_t ahc_cmd_get_scsi_status(Scsi_Cmnd
*cmd
);
913 static __inline
uint32_t ahc_get_scsi_status(struct scb
*);
914 static __inline
void ahc_set_transaction_tag(struct scb
*, int, u_int
);
915 static __inline u_long
ahc_get_transfer_length(struct scb
*);
916 static __inline
int ahc_get_transfer_dir(struct scb
*);
917 static __inline
void ahc_set_residual(struct scb
*, u_long
);
918 static __inline
void ahc_set_sense_residual(struct scb
*scb
, u_long resid
);
919 static __inline u_long
ahc_get_residual(struct scb
*);
920 static __inline u_long
ahc_get_sense_residual(struct scb
*);
921 static __inline
int ahc_perform_autosense(struct scb
*);
922 static __inline
uint32_t ahc_get_sense_bufsize(struct ahc_softc
*,
924 static __inline
void ahc_notify_xfer_settings_change(struct ahc_softc
*,
925 struct ahc_devinfo
*);
926 static __inline
void ahc_platform_scb_free(struct ahc_softc
*ahc
,
928 static __inline
void ahc_freeze_scb(struct scb
*scb
);
931 void ahc_cmd_set_transaction_status(Scsi_Cmnd
*cmd
, uint32_t status
)
933 cmd
->result
&= ~(CAM_STATUS_MASK
<< 16);
934 cmd
->result
|= status
<< 16;
938 void ahc_set_transaction_status(struct scb
*scb
, uint32_t status
)
940 ahc_cmd_set_transaction_status(scb
->io_ctx
,status
);
944 void ahc_cmd_set_scsi_status(Scsi_Cmnd
*cmd
, uint32_t status
)
946 cmd
->result
&= ~0xFFFF;
947 cmd
->result
|= status
;
951 void ahc_set_scsi_status(struct scb
*scb
, uint32_t status
)
953 ahc_cmd_set_scsi_status(scb
->io_ctx
, status
);
957 uint32_t ahc_cmd_get_transaction_status(Scsi_Cmnd
*cmd
)
959 return ((cmd
->result
>> 16) & CAM_STATUS_MASK
);
963 uint32_t ahc_get_transaction_status(struct scb
*scb
)
965 return (ahc_cmd_get_transaction_status(scb
->io_ctx
));
969 uint32_t ahc_cmd_get_scsi_status(Scsi_Cmnd
*cmd
)
971 return (cmd
->result
& 0xFFFF);
975 uint32_t ahc_get_scsi_status(struct scb
*scb
)
977 return (ahc_cmd_get_scsi_status(scb
->io_ctx
));
981 void ahc_set_transaction_tag(struct scb
*scb
, int enabled
, u_int type
)
984 * Nothing to do for linux as the incoming transaction
985 * has no concept of tag/non tagged, etc.
990 u_long
ahc_get_transfer_length(struct scb
*scb
)
992 return (scb
->platform_data
->xfer_len
);
996 int ahc_get_transfer_dir(struct scb
*scb
)
998 return (scb
->io_ctx
->sc_data_direction
);
1002 void ahc_set_residual(struct scb
*scb
, u_long resid
)
1004 scb
->io_ctx
->resid
= resid
;
1008 void ahc_set_sense_residual(struct scb
*scb
, u_long resid
)
1010 scb
->platform_data
->sense_resid
= resid
;
1014 u_long
ahc_get_residual(struct scb
*scb
)
1016 return (scb
->io_ctx
->resid
);
1020 u_long
ahc_get_sense_residual(struct scb
*scb
)
1022 return (scb
->platform_data
->sense_resid
);
1026 int ahc_perform_autosense(struct scb
*scb
)
1029 * We always perform autosense in Linux.
1030 * On other platforms this is set on a
1031 * per-transaction basis.
1036 static __inline
uint32_t
1037 ahc_get_sense_bufsize(struct ahc_softc
*ahc
, struct scb
*scb
)
1039 return (sizeof(struct scsi_sense_data
));
1042 static __inline
void
1043 ahc_notify_xfer_settings_change(struct ahc_softc
*ahc
,
1044 struct ahc_devinfo
*devinfo
)
1046 /* Nothing to do here for linux */
1049 static __inline
void
1050 ahc_platform_scb_free(struct ahc_softc
*ahc
, struct scb
*scb
)
1052 ahc
->flags
&= ~AHC_RESOURCE_SHORTAGE
;
1055 int ahc_platform_alloc(struct ahc_softc
*ahc
, void *platform_arg
);
1056 void ahc_platform_free(struct ahc_softc
*ahc
);
1057 void ahc_platform_freeze_devq(struct ahc_softc
*ahc
, struct scb
*scb
);
1059 static __inline
void
1060 ahc_freeze_scb(struct scb
*scb
)
1062 if ((scb
->io_ctx
->result
& (CAM_DEV_QFRZN
<< 16)) == 0) {
1063 scb
->io_ctx
->result
|= CAM_DEV_QFRZN
<< 16;
1064 scb
->platform_data
->dev
->qfrozen
++;
1068 void ahc_platform_set_tags(struct ahc_softc
*ahc
,
1069 struct ahc_devinfo
*devinfo
, ahc_queue_alg
);
1070 int ahc_platform_abort_scbs(struct ahc_softc
*ahc
, int target
,
1071 char channel
, int lun
, u_int tag
,
1072 role_t role
, uint32_t status
);
1074 ahc_linux_isr(int irq
, void *dev_id
, struct pt_regs
* regs
);
1075 void ahc_platform_flushwork(struct ahc_softc
*ahc
);
1076 int ahc_softc_comp(struct ahc_softc
*, struct ahc_softc
*);
1077 void ahc_done(struct ahc_softc
*, struct scb
*);
1078 void ahc_send_async(struct ahc_softc
*, char channel
,
1079 u_int target
, u_int lun
, ac_code
, void *);
1080 void ahc_print_path(struct ahc_softc
*, struct scb
*);
1081 void ahc_platform_dump_card_state(struct ahc_softc
*ahc
);
1084 #define AHC_PCI_CONFIG 1
1086 #define AHC_PCI_CONFIG 0
1088 #define bootverbose aic7xxx_verbose
1089 extern u_int aic7xxx_verbose
;
1090 #endif /* _AIC7XXX_LINUX_H_ */