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 dma_alloc_coherent() 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
437typedef enum
438{
439	AHC_POWER_STATE_D0,
440	AHC_POWER_STATE_D1,
441	AHC_POWER_STATE_D2,
442	AHC_POWER_STATE_D3
443} ahc_power_state;
444
445/**************************** VL/EISA Routines ********************************/
446#ifdef CONFIG_EISA
447int			 ahc_linux_eisa_init(void);
448void			 ahc_linux_eisa_exit(void);
449int			 aic7770_map_registers(struct ahc_softc *ahc,
450					       u_int port);
451int			 aic7770_map_int(struct ahc_softc *ahc, u_int irq);
452#else
453static inline int	ahc_linux_eisa_init(void) {
454	return -ENODEV;
455}
456static inline void	ahc_linux_eisa_exit(void) {
457}
458#endif
459
460/******************************* PCI Routines *********************************/
461#ifdef CONFIG_PCI
462int			 ahc_linux_pci_init(void);
463void			 ahc_linux_pci_exit(void);
464int			 ahc_pci_map_registers(struct ahc_softc *ahc);
465int			 ahc_pci_map_int(struct ahc_softc *ahc);
466
467uint32_t		 ahc_pci_read_config(ahc_dev_softc_t pci,
468					     int reg, int width);
469
470void			 ahc_pci_write_config(ahc_dev_softc_t pci,
471					      int reg, uint32_t value,
472					      int width);
473
474static inline int ahc_get_pci_function(ahc_dev_softc_t);
475static inline int
476ahc_get_pci_function(ahc_dev_softc_t pci)
477{
478	return (PCI_FUNC(pci->devfn));
479}
480
481static inline int ahc_get_pci_slot(ahc_dev_softc_t);
482static inline int
483ahc_get_pci_slot(ahc_dev_softc_t pci)
484{
485	return (PCI_SLOT(pci->devfn));
486}
487
488static inline int ahc_get_pci_bus(ahc_dev_softc_t);
489static inline int
490ahc_get_pci_bus(ahc_dev_softc_t pci)
491{
492	return (pci->bus->number);
493}
494#else
495static inline int ahc_linux_pci_init(void) {
496	return 0;
497}
498static inline void ahc_linux_pci_exit(void) {
499}
500#endif
501
502static inline void ahc_flush_device_writes(struct ahc_softc *);
503static inline void
504ahc_flush_device_writes(struct ahc_softc *ahc)
505{
506	/* XXX Is this sufficient for all architectures??? */
507	ahc_inb(ahc, INTSTAT);
508}
509
510/**************************** Proc FS Support *********************************/
511int	ahc_proc_write_seeprom(struct Scsi_Host *, char *, int);
512int	ahc_linux_show_info(struct seq_file *, struct Scsi_Host *);
513
514/*************************** Domain Validation ********************************/
515/*********************** Transaction Access Wrappers *************************/
516
517static inline
518void ahc_cmd_set_transaction_status(struct scsi_cmnd *cmd, uint32_t status)
519{
520	cmd->result &= ~(CAM_STATUS_MASK << 16);
521	cmd->result |= status << 16;
522}
523
524static inline
525void ahc_set_transaction_status(struct scb *scb, uint32_t status)
526{
527	ahc_cmd_set_transaction_status(scb->io_ctx,status);
528}
529
530static inline
531void ahc_cmd_set_scsi_status(struct scsi_cmnd *cmd, uint32_t status)
532{
533	cmd->result &= ~0xFFFF;
534	cmd->result |= status;
535}
536
537static inline
538void ahc_set_scsi_status(struct scb *scb, uint32_t status)
539{
540	ahc_cmd_set_scsi_status(scb->io_ctx, status);
541}
542
543static inline
544uint32_t ahc_cmd_get_transaction_status(struct scsi_cmnd *cmd)
545{
546	return ((cmd->result >> 16) & CAM_STATUS_MASK);
547}
548
549static inline
550uint32_t ahc_get_transaction_status(struct scb *scb)
551{
552	return (ahc_cmd_get_transaction_status(scb->io_ctx));
553}
554
555static inline
556uint32_t ahc_cmd_get_scsi_status(struct scsi_cmnd *cmd)
557{
558	return (cmd->result & 0xFFFF);
559}
560
561static inline
562uint32_t ahc_get_scsi_status(struct scb *scb)
563{
564	return (ahc_cmd_get_scsi_status(scb->io_ctx));
565}
566
567static inline
568void ahc_set_transaction_tag(struct scb *scb, int enabled, u_int type)
569{
570	/*
571	 * Nothing to do for linux as the incoming transaction
572	 * has no concept of tag/non tagged, etc.
573	 */
574}
575
576static inline
577u_long ahc_get_transfer_length(struct scb *scb)
578{
579	return (scb->platform_data->xfer_len);
580}
581
582static inline
583int ahc_get_transfer_dir(struct scb *scb)
584{
585	return (scb->io_ctx->sc_data_direction);
586}
587
588static inline
589void ahc_set_residual(struct scb *scb, u_long resid)
590{
591	scsi_set_resid(scb->io_ctx, resid);
592}
593
594static inline
595void ahc_set_sense_residual(struct scb *scb, u_long resid)
596{
597	scb->platform_data->sense_resid = resid;
598}
599
600static inline
601u_long ahc_get_residual(struct scb *scb)
602{
603	return scsi_get_resid(scb->io_ctx);
604}
605
606static inline
607u_long ahc_get_sense_residual(struct scb *scb)
608{
609	return (scb->platform_data->sense_resid);
610}
611
612static inline
613int ahc_perform_autosense(struct scb *scb)
614{
615	/*
616	 * We always perform autosense in Linux.
617	 * On other platforms this is set on a
618	 * per-transaction basis.
619	 */
620	return (1);
621}
622
623static inline uint32_t
624ahc_get_sense_bufsize(struct ahc_softc *ahc, struct scb *scb)
625{
626	return (sizeof(struct scsi_sense_data));
627}
628
629static inline void
630ahc_notify_xfer_settings_change(struct ahc_softc *ahc,
631				struct ahc_devinfo *devinfo)
632{
633	/* Nothing to do here for linux */
634}
635
636static inline void
637ahc_platform_scb_free(struct ahc_softc *ahc, struct scb *scb)
638{
639}
640
641int	ahc_platform_alloc(struct ahc_softc *ahc, void *platform_arg);
642void	ahc_platform_free(struct ahc_softc *ahc);
643void	ahc_platform_freeze_devq(struct ahc_softc *ahc, struct scb *scb);
644
645static inline void
646ahc_freeze_scb(struct scb *scb)
647{
648	if ((scb->io_ctx->result & (CAM_DEV_QFRZN << 16)) == 0) {
649		scb->io_ctx->result |= CAM_DEV_QFRZN << 16;
650		scb->platform_data->dev->qfrozen++;
651	}
652}
653
654void	ahc_platform_set_tags(struct ahc_softc *ahc, struct scsi_device *sdev,
655			      struct ahc_devinfo *devinfo, ahc_queue_alg);
656int	ahc_platform_abort_scbs(struct ahc_softc *ahc, int target,
657				char channel, int lun, u_int tag,
658				role_t role, uint32_t status);
659irqreturn_t
660	ahc_linux_isr(int irq, void *dev_id);
661void	ahc_platform_flushwork(struct ahc_softc *ahc);
662void	ahc_done(struct ahc_softc*, struct scb*);
663void	ahc_send_async(struct ahc_softc *, char channel,
664		       u_int target, u_int lun, ac_code);
665void	ahc_print_path(struct ahc_softc *, struct scb *);
666
667#ifdef CONFIG_PCI
668#define AHC_PCI_CONFIG 1
669#else
670#define AHC_PCI_CONFIG 0
671#endif
672#define bootverbose aic7xxx_verbose
673extern u_int aic7xxx_verbose;
674#endif /* _AIC7XXX_LINUX_H_ */
675